1. Hot air valve stem perpendicular to the ground only installation, commissioning should be perpendicular to the ground in the stem under the conditions;
2. Hot air valve ventilation, cooling water entering and leaving the direction of the direction and must comply with the icon to install the hint. When the hot air valve installed wind direction arrows should point to the hot head of Road; hot air valve used to burn valves, flue gas valve, wind direction arrows should point to the stove; hot air valve air valve used to turn the clock back when you break wind direction arrows should point to hot head Road; hot air valve used be mixed with air shut-off valve should be headed in opposite directions when the wind direction arrows in charge of Road hot air (hot air valve for the valve installation of the other name is still confined to plate "hot air valve", the nameplate has made it clear the name of the name of the above-mentioned valve, its the wind direction arrows, compared with medium flows).
3. Debugging cotton yarn will be before the application of the valve body, valve plate sealing surface wipe clean, so that the sealing surface is scratched. Pre-operational, all to the point of lubricating oil, the floating seal parts of graphite powder injection, or grease;
4. Installed check valve, valve cap, valve stem seals and other parts of the bolts fastening, so as to guarantee not to leak out and valve plate whereabouts smooth. Slow start valves manually to confirm body is operating normally and then start the test run;
5, Valves for pipeline installation for the whole installation (excluding transmission). Install lifting point on the lug body (in the circular flange at 4, valve cover for the whole lifting lug is strictly prohibited), the valve and then the whole installation will be installed in the valve gear on;
6. Valve pipe, flange, metal gasket between the application of ceramic coating high-temperature sealant plus sealed to eliminate air leakage;
7. Valve is turned on, the lower valve plate should be higher than 100mm above the valve along the channel (debugging method: the valve plate to the upper limit and then raise the whereabouts of 50mm as a valve plate open position). Valve cooling water to flow, the water temperature is below 40 ℃;
8. Valves factory pre-installation, transmission valve body frame and packaged separately stored, on-site and then the whole installation. Installed according to installation of the position will interface with the transmission valve body to connect fastened near the switch location on-site installation after adjustment fastening. Valve commissioning should start the first hand after the driving force. (Note: Hydraulic valve installed in the valve open and close state, so that both sides have a spare fuel tank of the piston stroke, adjust the limit switch and then fixed. Rack and pinion hydraulic transmission valve shall be under the valve plate stroke limit position adjustment cylinder piston position, and then hanging chain). Operation should be stable and should not have collision and the impact of catching phenomenon.
Valve repair and maintenance of the use of
1. A week to once the valve closed when the sealing performance, namely, touch, ears feel to determine the valve sealing effect, identify problems timely report processing;
2. Ban after the pre-class checks the cooling water temperature, pressure, and everywhere outside the leakage problems are discovered immediately removed;
3. To open the valve should be closed to observe the smooth operation conditions, identify problems and timely treatment;
4. On a regular basis twice a week, filling of lubricating oil, grease, to prevent the functioning of parts short of oil burn damage; wear-resistant electrode
5. Is strictly prohibited without water in the cooling water shortage, and under the conditions of use;
6. Periodic inspection and cleaning valve deposits, abnormal timely manner;
7. Electric valve electric device instructions please read the instructions supplied with electric devices.
Other
1. Valve storage and transportation should be maintained placed in the bottom of the valve sealing surface, and the wind vane arrow facing up (known as flue plate valve, back off air valve, mixing air shut-off valve, then the vane arrow down) and valves rod firmly fixed in the closed position to prevent vibration collision damage sealing surface;
2. Drive installed in the factory installation after passing the custody of apart shipped separately.
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Friday, November 5, 2010
Thursday, November 4, 2010
How to integrate pilot controlled check valve for each application of throttle
Pilot controlled check valve in the hydraulic circuit in a wide range of applications, but in the application of this valve should be fully taken into account the characteristics of the valve, otherwise it will create loop instability, especially in the high-pressure system, the reverse pilot controlled check valve P2 mouth open before the high pressure, in order to reduce the hydraulic pressure control system, hydraulic shock and noise, the use of the unloading is also charged with one-way hydraulic spool valve. Unloading hydraulic control valve can be improved the performance of one-way valve, the hydraulic control valve is characterized by one-way, when one-way fluid control valve port K in without the pressure of the oil when the oil pressure can only flow from the oil I P1 I P2 oil can not reverse. When the control I K, when the oil pressure control, oil control piston due to the promotion push, and unloading open top杆顶spool, main spool at the same time open access to P1, P2 two-port, the oil can be in these two directions on the free flow of unloading valve reduces the hydraulic shocks, so that one-way hydraulic control valve performance more stable, but in high-volume high-pressure system is still shocks or noise.
Regular one-way hydraulic control valves used in pressure, pressure relief, locking loop. System pressure as a result of the process of Bulgaria, due to pressure, oil compression, pipeline expansion components can occur, such as elastic deformation energy stored in the relief when a sudden release of renal volume and from the valve-bit digital-to-left when , as the hydraulic cylinder pressure on the cavity, when the inferior vena cava pressure increased unloading valve and main valve to open almost simultaneously, so that the pressure on the cavity through the hydraulic control oil suddenly released into the back of one-way valve circuit. At the same time as a result of these two reasons for the existence of God of relief after packing too fast, resulting in shock and vibration and noise, and we the type of hydraulic circuit has been improved.
As a result of large high-pressure fluid flow control has led to a one-way pressure relief valve too quickly, so that the impact of increasing this in the loop with a throttle valve, so that pilot controlled check valve to open the unloading valve and then open the the main valve, due to throttle the flow with sufficient control to ensure the stability of the minimum flow, easy adjustment, resulting in leakage of small, temperature and pressure on the impact of small, so by adjusting the throttle valve to control the hydraulic cylinders on the cavity of the oil Liquid relief extended time, the pressure will enhance the capacity, the return of hydraulic oil on the impact of the various components and noise. Security has its large high-pressure fluid flow check valve control loop for the same improvement, the results can satisfy the requirements of control does not affect the speed of the piston.
gate valve check
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Regular one-way hydraulic control valves used in pressure, pressure relief, locking loop. System pressure as a result of the process of Bulgaria, due to pressure, oil compression, pipeline expansion components can occur, such as elastic deformation energy stored in the relief when a sudden release of renal volume and from the valve-bit digital-to-left when , as the hydraulic cylinder pressure on the cavity, when the inferior vena cava pressure increased unloading valve and main valve to open almost simultaneously, so that the pressure on the cavity through the hydraulic control oil suddenly released into the back of one-way valve circuit. At the same time as a result of these two reasons for the existence of God of relief after packing too fast, resulting in shock and vibration and noise, and we the type of hydraulic circuit has been improved.
As a result of large high-pressure fluid flow control has led to a one-way pressure relief valve too quickly, so that the impact of increasing this in the loop with a throttle valve, so that pilot controlled check valve to open the unloading valve and then open the the main valve, due to throttle the flow with sufficient control to ensure the stability of the minimum flow, easy adjustment, resulting in leakage of small, temperature and pressure on the impact of small, so by adjusting the throttle valve to control the hydraulic cylinders on the cavity of the oil Liquid relief extended time, the pressure will enhance the capacity, the return of hydraulic oil on the impact of the various components and noise. Security has its large high-pressure fluid flow check valve control loop for the same improvement, the results can satisfy the requirements of control does not affect the speed of the piston.
gate valve check
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Plastic sub-catchment and the valve device works in the application of warm (b)
1.2 Product Requirements
Plastic sub-catchment 1.2.1 Design requirements
The backbone of the design requirements of plastic pipe should be in accordance with GB/T18991-2003 "hot and cold water systems and the use of thermoplastic pipe fittings" and related material of pipe product standards.
Connection with the pipeline should choose welding, bonding or mosaic pieces of the way, should not restrict the use of machinery connected to heating heating network in China.
1.2.2 Plastic valve design requirements
a) If the pressure valve has only one direction, the external body should be marked with the arrow, symmetrical design of the valve should be suitable for two-way flow of fluid and isolation.
b) sealing components driven by the stem to the gate valve action, should be the end or intermediate position by the friction of any device or execution of positioning, fluid pressure can not change its position.
c) in accordance with EN736-3, the smallest cavity valve hole should be in accordance with the following two points: 1. the valve on the flow of any medium aperture, the valve should not be less than 90% of the value of DN; 2. For the structure of the circulation need to narrow the aperture of the valve media, manufacturers should indicate the actual size of the smallest hole.
d) between the valve stem seal and shall be in accordance with EN736-3.
e) resistance in the valve, the valve should be designed to consider the life of wear parts, or manufacturer should be specified in the operation guide book recommended the replacement of the entire valve.
f) all valves to operate at a flow rate of the application devices should reach 3m / s.
g) from the top of the valve, the valve handle or hand wheel clockwise direction for the closure of the valve.
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Plastic sub-catchment 1.2.1 Design requirements
The backbone of the design requirements of plastic pipe should be in accordance with GB/T18991-2003 "hot and cold water systems and the use of thermoplastic pipe fittings" and related material of pipe product standards.
Connection with the pipeline should choose welding, bonding or mosaic pieces of the way, should not restrict the use of machinery connected to heating heating network in China.
1.2.2 Plastic valve design requirements
a) If the pressure valve has only one direction, the external body should be marked with the arrow, symmetrical design of the valve should be suitable for two-way flow of fluid and isolation.
b) sealing components driven by the stem to the gate valve action, should be the end or intermediate position by the friction of any device or execution of positioning, fluid pressure can not change its position.
c) in accordance with EN736-3, the smallest cavity valve hole should be in accordance with the following two points: 1. the valve on the flow of any medium aperture, the valve should not be less than 90% of the value of DN; 2. For the structure of the circulation need to narrow the aperture of the valve media, manufacturers should indicate the actual size of the smallest hole.
d) between the valve stem seal and shall be in accordance with EN736-3.
e) resistance in the valve, the valve should be designed to consider the life of wear parts, or manufacturer should be specified in the operation guide book recommended the replacement of the entire valve.
f) all valves to operate at a flow rate of the application devices should reach 3m / s.
g) from the top of the valve, the valve handle or hand wheel clockwise direction for the closure of the valve.
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Electric valve selection techniques and the need to consider factors
1, control valve selection of issues:
At present, the project control valve commonly used in the main are: solenoid valve and electric valve. However, they are in use have shortcomings, such as solenoid valves susceptible to blockage, water resistance, large, to be a long-term maintenance of hand; while electric valve while water resistance, but because of the need for the necessary control circuitry, so the corrosive influence of water vapor promotion of life is also plagued a major problem.
2, how to maximize the use of valves to overcome the scale of the impact of
Whether or electric solenoid valve, the scale will not only result in valve leakage, severe cases may even affect the normal operation of the valve, so how to eliminate the impact of scale is already in the industry are generally of concern.
Process control valve to the scope is too broad, can not repeat them here to give you make it clear that it was hoped that the content is also personally own investigation obtained. However, as the executing agency and the use of the design caused by different filling materials, poor performance or a control valve can be concluded from the law: 1, process where the presence of dead zone will deviate from the original set point process variable. Therefore, the controller output must be increased to sufficient to overcome the dead zone, only this corrective action will occur. 2, ① the main factors affect the dead zone. Friction, wavering, the valve shaft reversed, the dead zone amplifier. Where a variety of control valves sensitive to the friction is not the same, such as rotary valve for a high seat load caused by the friction is very sensitive, so use note. But for some seal type, high seat load is shut down in order to obtain the necessary grades. Haha, so that out of this valve design is very poor, easily lead to large dead zone, which affect the degree of deviation of the process is obvious, simply be decisive. ② wear and tear. Valve when in normal use wear and tear is inevitable, but the lubrication layer of wear and tear is the most powerful, according to our experiments confirmed that the lubrication of rotary valve after only a few hundred cycles, movements, almost ready to just brush lubrication layer used (an exaggeration point, or writing articles is very depressed). Another stress-induced sealing layer of the load will lead to wear and tear, these are the main factors leading to increased friction. The result? Is to give the performance of control valves in the devastating! ③, packing friction is the major source of friction control valve, the use of filler is different from the friction caused by a great difference. ④, the different types of implementing agencies is also a fundamental influence on the friction, in general, spring film executive body better than the Pistons executing agency.
3, positioning device design issues.
The sake of the initial thinking from the design, implementation agencies and the positioner design must be considered together. How to design a good locator it? Important feature of his know, must be a high-gain devices. Whose gain is composed of two parts: the static gain and dynamic gain. Static gain to improve the method is to design a preamplifier. For example, nozzle - baffle device. Then have a friend who would like to ask how dynamic gain access to? Is obtained through a power amplifier, the power amplifier is a slide valve (General). Now, some people have already used a microprocessor to set the locator. It appears after the valve will tell Let's talk where he was broken. Hou then do the maintenance is simple. Returning to the subject. At the same time with high static and high dynamic-gain, high-performance positioning device for any given valve component provides lower degree of deviation in the process of the best overall performance. ball valve Trunnion Mounted Ball Valve Floating Ball Valve Top Entry Ball Valve ball valve V Type Ball Valve
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At present, the project control valve commonly used in the main are: solenoid valve and electric valve. However, they are in use have shortcomings, such as solenoid valves susceptible to blockage, water resistance, large, to be a long-term maintenance of hand; while electric valve while water resistance, but because of the need for the necessary control circuitry, so the corrosive influence of water vapor promotion of life is also plagued a major problem.
2, how to maximize the use of valves to overcome the scale of the impact of
Whether or electric solenoid valve, the scale will not only result in valve leakage, severe cases may even affect the normal operation of the valve, so how to eliminate the impact of scale is already in the industry are generally of concern.
Process control valve to the scope is too broad, can not repeat them here to give you make it clear that it was hoped that the content is also personally own investigation obtained. However, as the executing agency and the use of the design caused by different filling materials, poor performance or a control valve can be concluded from the law: 1, process where the presence of dead zone will deviate from the original set point process variable. Therefore, the controller output must be increased to sufficient to overcome the dead zone, only this corrective action will occur. 2, ① the main factors affect the dead zone. Friction, wavering, the valve shaft reversed, the dead zone amplifier. Where a variety of control valves sensitive to the friction is not the same, such as rotary valve for a high seat load caused by the friction is very sensitive, so use note. But for some seal type, high seat load is shut down in order to obtain the necessary grades. Haha, so that out of this valve design is very poor, easily lead to large dead zone, which affect the degree of deviation of the process is obvious, simply be decisive. ② wear and tear. Valve when in normal use wear and tear is inevitable, but the lubrication layer of wear and tear is the most powerful, according to our experiments confirmed that the lubrication of rotary valve after only a few hundred cycles, movements, almost ready to just brush lubrication layer used (an exaggeration point, or writing articles is very depressed). Another stress-induced sealing layer of the load will lead to wear and tear, these are the main factors leading to increased friction. The result? Is to give the performance of control valves in the devastating! ③, packing friction is the major source of friction control valve, the use of filler is different from the friction caused by a great difference. ④, the different types of implementing agencies is also a fundamental influence on the friction, in general, spring film executive body better than the Pistons executing agency.
3, positioning device design issues.
The sake of the initial thinking from the design, implementation agencies and the positioner design must be considered together. How to design a good locator it? Important feature of his know, must be a high-gain devices. Whose gain is composed of two parts: the static gain and dynamic gain. Static gain to improve the method is to design a preamplifier. For example, nozzle - baffle device. Then have a friend who would like to ask how dynamic gain access to? Is obtained through a power amplifier, the power amplifier is a slide valve (General). Now, some people have already used a microprocessor to set the locator. It appears after the valve will tell Let's talk where he was broken. Hou then do the maintenance is simple. Returning to the subject. At the same time with high static and high dynamic-gain, high-performance positioning device for any given valve component provides lower degree of deviation in the process of the best overall performance. ball valve Trunnion Mounted Ball Valve Floating Ball Valve Top Entry Ball Valve ball valve V Type Ball Valve
We can offer more Knife Gate Valve Information.If you need us according your spcification to produce the Knife Gate Valve .
Need, please e-mail to valve401@gmail.com m
What is the valve works?
30's, the United States invented the butterfly valve, 50 years introduced to Japan until the age of 60 commonly used in Japan, but in my promotion of it is what happened after the age of 70. The world in general DN300 mm butterfly valve has been gradually replaced the valve. Butterfly valve with the valve opening and closing time is short compared to the operation for the moment is small, installation space of small and light weight. To DN1000, for example, butterfly is about 2T, while the gate is about 3.5T, and the valve drive easily with a variety of combinations, with good durability and reliability.
The disadvantage is that rubber seal butterfly valve used for cutting, due to improper use will produce cavitation, so that peeling rubber seat, injury, etc. happen. To this end, and now the international community has developed metal sealing butterfly valve, cavitation area decreases, in recent years, China has also developed a metal sealing butterfly valve, in Japan in recent years has also developed resistance to cavitation erosion, low vibration, low noise comb-shaped butterfly.
Seal seat life in general, under normal circumstances, the rubber for 15 years -20 years, 80 years -90 years of metal. But how to choose the right requirements will have to under the working conditions.
Butterfly valve opening and flow of the relationship between the percentage of change in essentially linear. If used to control the flow, its flow characteristics and piping of the flow resistance is also closely related, such as the installation of two pipelines valve diameter, form, etc. All the same, while the pipe loss coefficient is different from the flow valve will be very different.
If the throttle valve by a big margin in the state of the valve plate on the back prone to cavitation, there is the possibility of damage to the valve, generally used in the 15 ° outside.
Butterfly in the middle of opening, the body and the butterfly plate front-end to form the shape of the openings to valve shaft as the center, on both sides to complete the formation of a different state, the side of the butterfly plate front-end cis-direction moving water, the other side of the direction of counter-current water The move, therefore, the side of the body and the valve plate may form a nozzle-shaped openings, the other side similar to the orifice-shaped openings, the nozzle side faster than the cutting side of the multi-velocity, while the throttle valve side will produce the following negative pressure often occur rubber seal off.
Butterfly valve operation torque, due to open and close the valve opening, and its value is different in a different direction, horizontal butterfly valve, especially the large-diameter valve, due to water depth, valve shaft, into the water head difference generated by the torque can not be ignored. In addition, the valves bend when the import side device to form a bias current, torque will increase. The valve opening in the middle, because the water flow torque work, operating agencies need to self-locking.
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The disadvantage is that rubber seal butterfly valve used for cutting, due to improper use will produce cavitation, so that peeling rubber seat, injury, etc. happen. To this end, and now the international community has developed metal sealing butterfly valve, cavitation area decreases, in recent years, China has also developed a metal sealing butterfly valve, in Japan in recent years has also developed resistance to cavitation erosion, low vibration, low noise comb-shaped butterfly.
Seal seat life in general, under normal circumstances, the rubber for 15 years -20 years, 80 years -90 years of metal. But how to choose the right requirements will have to under the working conditions.
Butterfly valve opening and flow of the relationship between the percentage of change in essentially linear. If used to control the flow, its flow characteristics and piping of the flow resistance is also closely related, such as the installation of two pipelines valve diameter, form, etc. All the same, while the pipe loss coefficient is different from the flow valve will be very different.
If the throttle valve by a big margin in the state of the valve plate on the back prone to cavitation, there is the possibility of damage to the valve, generally used in the 15 ° outside.
Butterfly in the middle of opening, the body and the butterfly plate front-end to form the shape of the openings to valve shaft as the center, on both sides to complete the formation of a different state, the side of the butterfly plate front-end cis-direction moving water, the other side of the direction of counter-current water The move, therefore, the side of the body and the valve plate may form a nozzle-shaped openings, the other side similar to the orifice-shaped openings, the nozzle side faster than the cutting side of the multi-velocity, while the throttle valve side will produce the following negative pressure often occur rubber seal off.
Butterfly valve operation torque, due to open and close the valve opening, and its value is different in a different direction, horizontal butterfly valve, especially the large-diameter valve, due to water depth, valve shaft, into the water head difference generated by the torque can not be ignored. In addition, the valves bend when the import side device to form a bias current, torque will increase. The valve opening in the middle, because the water flow torque work, operating agencies need to self-locking.
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Tuesday, November 2, 2010
Angle-type water maze cut-off valve to eliminate the phenomenon of
JM100-20-style maze angle valve 3 years Cainan Oilfield in Xinjiang has 30 sets of field application, an effective solution to the water injection wells total failure cut-off valves, stem seal leakage, erosion serious difficulties in switching.
JM100-20 angle-type valve is a maze of Xinjiang Production Technology Research Institute of Petroleum in 2005 to address the total water injection wells sealed valve failure and reduce the phenomenon of water hammer and reduce water damage to the equipment, extend equipment life and developed, 2006 application was put into operation at the scene.
This cut-off valve in the valve opening, clearance process for high-speed, high pressure water cutting has a good role, effectively reducing the flow velocity and greatly reduce the valves, pipelines and the impact of water injection equipment. In addition, the cut-off ball valve, sealing the valve seat for a special deal, and better improve the erosion resistance of the valve, anti-corrosion, extend the life of the valve.
Improved valve stem packing seal, valve stem seals would effectively guarantee a decrease of the resistance switching valve. At the same time, through the hand wheel valve ingenious design, an increase of handwheel torque switch, switch more convenient hand wheel.
JM100-20 angle-type valve maze simple structure, easy installation, operation of small resistance and reduce the labor intensity, and save over 80% of the cost of materials.
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JM100-20 angle-type valve is a maze of Xinjiang Production Technology Research Institute of Petroleum in 2005 to address the total water injection wells sealed valve failure and reduce the phenomenon of water hammer and reduce water damage to the equipment, extend equipment life and developed, 2006 application was put into operation at the scene.
This cut-off valve in the valve opening, clearance process for high-speed, high pressure water cutting has a good role, effectively reducing the flow velocity and greatly reduce the valves, pipelines and the impact of water injection equipment. In addition, the cut-off ball valve, sealing the valve seat for a special deal, and better improve the erosion resistance of the valve, anti-corrosion, extend the life of the valve.
Improved valve stem packing seal, valve stem seals would effectively guarantee a decrease of the resistance switching valve. At the same time, through the hand wheel valve ingenious design, an increase of handwheel torque switch, switch more convenient hand wheel.
JM100-20 angle-type valve maze simple structure, easy installation, operation of small resistance and reduce the labor intensity, and save over 80% of the cost of materials.
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How to choose in the low-pressure gas transmission and distribution system Triazene valve
First, the prospect of substantial natural gas, ene gas valve in great demand
Natural gas is a very clean high-quality prospects energy. Natural gas in the combustion process is not even the emission of soot and sulfur dioxide, carbon dioxide is far less than the amount offueled with coal oil. As China's cities and towns focus on the environment and ensure ecological sustainable development, to adapt to people's improved quality of life, estimated that by 2010, natural gas in China's cities and towns in the proportion of gas from the current 33% to 66%.
China has been in Sichuan, Shaanxi-Gansu-Ningxia, Xinjiang, such as the three major gas-bearing area, while the western South China Sea, Yinggehai Basin, the East China Sea waters, such as oil and gas shows have been good. Coupled with the introduction of Russian natural gas in future, the Yangtze River, the Pearl River Delta region, such as liquefied natural gas imports, China's natural gas supply will be ensured.
Under construction and planning of the "West-East Gas Transmission" and "South of Russia for gas," the cities and towns along the route will be gasification, gas pipeline valve which in great demand, as the valve manufacturer is promising "West Gas East lose "project is to the east of Tarim Lunnan gas transmission pipeline from the first round of the South Kuerle output, through Xinjiang, Gansu, Ningxia, Shaanxi, Shanxi, Henan, Anhui, Jiangsu Province, the end of eight of the crane to the town of Shanghai. Pipeline length of 4200Km, tube 1016mm, gas pressure of 10MPa, across the board is expected to run through the end of 2004.
Sichuan Basin province of Sichuan, Chongqing, in addition to the demand for natural gas, the end to lose by Zhongxian from the east by Hubei and Wuhan, and then north to the Xinyang Henan Province, the convergence of East and transmission of natural gas in Tarim to Shanghai, a total length of pipeline 811km, plan completed in 2003 .
Changqing gas field in Shaanxi-Gansu-Ningxia was completed by the end of 1998 to the field projects around the region, has now completed four natural gas pipelines:
1, Jing change the military to Xi'an, Baoji, Tongchuan;
2, Jingbian to Ningxia Hui Autonomous Region, Yinchuan;
3, Jingbian to Beijing's long-distance pipeline is planned to extend east from Beijing, Shandong;
4, Jingbian to Yulin, Yu Qing County.
"Russian gas for the South" will be China, Russia and South Korea in November 2, 2000 feasibility study on the signing of the agreement, pay close attention to the implementation plan completed in 2007 for three provinces in Northeast China and Bohai Sea region, Beijing Municipality, Tianjin Municipality, Hebei provinces, seven provinces and cities in Shandong Province.
Second, natural gas supply profile - gas systems and gas distribution systems
The general adoption of natural gas supply pipeline to the user, in many countries criss-cross the natural gas pipe network, facilities, planning cross-border gas pipeline are extremely active in the building activities. Have already referred in our country the construction of gas pipelines, in addition to natural gas supply pipeline, liquefied natural gas, and automotive vehicle compressed natural gas are two modes of supply more flexible.
Urban gas supply, the general received from the pipeline gas pipeline to the door station, with the measurement, voltage regulator, odorization functions (some are stored), in different cities and towns located within the pressure-level review of the gas pipeline system, gas distribution systems generally stem from pressure to control user access regulator Extension Station (me) during the low-voltage or medium voltage class B or gas boiler room for civilian and industrial users, urban gas pipeline design pressure P is divided into 7:
A2.5 times of high pressure gas pipeline High Pressure Gas Pipeline Gas Pipeline A0.8 in A0.2 low pressure gas pipeline P <0.01MPa
This article introduced the gas distribution system, gas design pressure 0.4MPa, the pressure valve selection of up to 1.6MPa.
Third, gas distribution system to the original requirements of the valve
The installation of the valve location and use of places: in the pressure gas pipeline located in the ground floor of the indoor valve, low-pressure regulator devices or pressure in front of B-class for each user set up the introduction of the total valve population, sub-valves, household and Then the total burning stove pipe, or load control valves, pressure regulator the General Logistics Department, the meter must be installed before and after the valve.
First, the prospect of substantial natural gas收慌, ene gas valve in great demand
Natural gas is a very clean high-quality prospects收慌energy. Natural gas in the combustion process is not even the emission of soot and sulfur dioxide, carbon dioxide is far less than the amount of拜启fueled with coal oil. As China's cities and towns focus on the environment and ensure ecological sustainable development, to adapt to people's improved quality of life, estimated that by 2010, natural gas in China's cities and towns in the proportion of gas from the current 33% to 66%.
China has been in Sichuan, Shaanxi-Gansu-Ningxia, Xinjiang, such as the three major gas-bearing area, while the western South China Sea, Yinggehai Basin, the East China Sea waters, such as oil and gas shows have been good. Coupled with the introduction of Russian natural gas in future, the Yangtze River, the Pearl River Delta region, such as liquefied natural gas imports, China's natural gas supply will be ensured.
Under construction and planning of the "West-East Gas Transmission" and "South of Russia for gas," the cities and towns along the route will be gasification, gas pipeline valve which in great demand, as the valve manufacturer is promising "West Gas East lose "project is to the east of Tarim Lunnan gas transmission pipeline from the first round of the South Kuerle output, through Xinjiang, Gansu, Ningxia, Shaanxi, Shanxi, Henan, Anhui, Jiangsu Province, the end of eight of the crane to the town of Shanghai. Pipeline length of 4200Km, tube 1016mm, gas pressure of 10MPa, across the board is expected to run through the end of 2004.
Sichuan Basin province of Sichuan, Chongqing, in addition to the demand for natural gas, the end to lose by Zhongxian from the east by Hubei and Wuhan, and then north to the Xinyang Henan Province, the convergence of East and transmission of natural gas in Tarim to Shanghai, a total length of pipeline 811km, plan completed in 2003 .
Changqing gas field in Shaanxi-Gansu-Ningxia was completed by the end of 1998 to the field projects around the region, has now completed four natural gas pipelines:
1, Jing change the military to Xi'an, Baoji, Tongchuan;
2, Jingbian to Ningxia Hui Autonomous Region, Yinchuan;
3, Jingbian to Beijing's long-distance pipeline is planned to extend east from Beijing, Shandong;
4, Jingbian to Yulin, Yu Qing County.
"Russian gas for the South" will be China, Russia and South Korea in November 2, 2000 feasibility study on the signing of the agreement, pay close attention to the implementation plan completed in 2007 for three provinces in Northeast China and Bohai Sea region, Beijing Municipality, Tianjin Municipality, Hebei provinces, seven provinces and cities in Shandong Province.
Second, natural gas supply profile - gas systems and gas distribution systems
The general adoption of natural gas supply pipeline to the user, in many countries criss-cross the natural gas pipe network, facilities, planning cross-border gas pipeline are extremely active in the building activities. Have already referred in our country the construction of gas pipelines, in addition to natural gas supply pipeline, liquefied natural gas, and automotive vehicle compressed natural gas are two modes of supply more flexible.
Urban gas supply, the general received from the pipeline gas pipeline to the door station, with the measurement, voltage regulator, odorization functions (some are stored), in different cities and towns located within the pressure-level review of the gas pipeline system, gas distribution systems generally stem from pressure to control user access regulator Extension Station (me) during the low-voltage or medium voltage class B or gas boiler room for civilian and industrial users, urban gas pipeline design pressure P is divided into 7:
A2.5 times of high pressure gas pipeline High Pressure Gas Pipeline Gas Pipeline A0.8 in A0.2 low pressure gas pipeline P <0.01MPa
This article introduced the gas distribution system, gas design pressure 0.4MPa, the pressure valve selection of up to 1.6MPa.
Third, gas distribution system to the original requirements of the valve
The installation of the valve location and use of places: in the pressure gas pipeline located in the ground floor of the indoor valve, low-pressure regulator devices or pressure in front of B-class for each user set up the introduction of the total valve population, sub-valves, household and Then the total burning stove pipe, or load control valves, pressure regulator the General Logistics Department, the meter must be installed before and after the valve.
ball valve Trunnion Mounted Ball Valve Floating Ball Valve Top Entry Ball Valve Three way ball valve V Type Ball Valve
We can offer more Knife Gate Valve Information.If you need us according your spcification to produce the Knife Gate Valve .
Need, please e-mail to valve401@gmail.com y
Natural gas is a very clean high-quality prospects energy. Natural gas in the combustion process is not even the emission of soot and sulfur dioxide, carbon dioxide is far less than the amount offueled with coal oil. As China's cities and towns focus on the environment and ensure ecological sustainable development, to adapt to people's improved quality of life, estimated that by 2010, natural gas in China's cities and towns in the proportion of gas from the current 33% to 66%.
China has been in Sichuan, Shaanxi-Gansu-Ningxia, Xinjiang, such as the three major gas-bearing area, while the western South China Sea, Yinggehai Basin, the East China Sea waters, such as oil and gas shows have been good. Coupled with the introduction of Russian natural gas in future, the Yangtze River, the Pearl River Delta region, such as liquefied natural gas imports, China's natural gas supply will be ensured.
Under construction and planning of the "West-East Gas Transmission" and "South of Russia for gas," the cities and towns along the route will be gasification, gas pipeline valve which in great demand, as the valve manufacturer is promising "West Gas East lose "project is to the east of Tarim Lunnan gas transmission pipeline from the first round of the South Kuerle output, through Xinjiang, Gansu, Ningxia, Shaanxi, Shanxi, Henan, Anhui, Jiangsu Province, the end of eight of the crane to the town of Shanghai. Pipeline length of 4200Km, tube 1016mm, gas pressure of 10MPa, across the board is expected to run through the end of 2004.
Sichuan Basin province of Sichuan, Chongqing, in addition to the demand for natural gas, the end to lose by Zhongxian from the east by Hubei and Wuhan, and then north to the Xinyang Henan Province, the convergence of East and transmission of natural gas in Tarim to Shanghai, a total length of pipeline 811km, plan completed in 2003 .
Changqing gas field in Shaanxi-Gansu-Ningxia was completed by the end of 1998 to the field projects around the region, has now completed four natural gas pipelines:
1, Jing change the military to Xi'an, Baoji, Tongchuan;
2, Jingbian to Ningxia Hui Autonomous Region, Yinchuan;
3, Jingbian to Beijing's long-distance pipeline is planned to extend east from Beijing, Shandong;
4, Jingbian to Yulin, Yu Qing County.
"Russian gas for the South" will be China, Russia and South Korea in November 2, 2000 feasibility study on the signing of the agreement, pay close attention to the implementation plan completed in 2007 for three provinces in Northeast China and Bohai Sea region, Beijing Municipality, Tianjin Municipality, Hebei provinces, seven provinces and cities in Shandong Province.
Second, natural gas supply profile - gas systems and gas distribution systems
The general adoption of natural gas supply pipeline to the user, in many countries criss-cross the natural gas pipe network, facilities, planning cross-border gas pipeline are extremely active in the building activities. Have already referred in our country the construction of gas pipelines, in addition to natural gas supply pipeline, liquefied natural gas, and automotive vehicle compressed natural gas are two modes of supply more flexible.
Urban gas supply, the general received from the pipeline gas pipeline to the door station, with the measurement, voltage regulator, odorization functions (some are stored), in different cities and towns located within the pressure-level review of the gas pipeline system, gas distribution systems generally stem from pressure to control user access regulator Extension Station (me) during the low-voltage or medium voltage class B or gas boiler room for civilian and industrial users, urban gas pipeline design pressure P is divided into 7:
A2.5 times of high pressure gas pipeline High Pressure Gas Pipeline Gas Pipeline A0.8 in A0.2 low pressure gas pipeline P <0.01MPa
This article introduced the gas distribution system, gas design pressure 0.4MPa, the pressure valve selection of up to 1.6MPa.
Third, gas distribution system to the original requirements of the valve
The installation of the valve location and use of places: in the pressure gas pipeline located in the ground floor of the indoor valve, low-pressure regulator devices or pressure in front of B-class for each user set up the introduction of the total valve population, sub-valves, household and Then the total burning stove pipe, or load control valves, pressure regulator the General Logistics Department, the meter must be installed before and after the valve.
First, the prospect of substantial natural gas收慌, ene gas valve in great demand
Natural gas is a very clean high-quality prospects收慌energy. Natural gas in the combustion process is not even the emission of soot and sulfur dioxide, carbon dioxide is far less than the amount of拜启fueled with coal oil. As China's cities and towns focus on the environment and ensure ecological sustainable development, to adapt to people's improved quality of life, estimated that by 2010, natural gas in China's cities and towns in the proportion of gas from the current 33% to 66%.
China has been in Sichuan, Shaanxi-Gansu-Ningxia, Xinjiang, such as the three major gas-bearing area, while the western South China Sea, Yinggehai Basin, the East China Sea waters, such as oil and gas shows have been good. Coupled with the introduction of Russian natural gas in future, the Yangtze River, the Pearl River Delta region, such as liquefied natural gas imports, China's natural gas supply will be ensured.
Under construction and planning of the "West-East Gas Transmission" and "South of Russia for gas," the cities and towns along the route will be gasification, gas pipeline valve which in great demand, as the valve manufacturer is promising "West Gas East lose "project is to the east of Tarim Lunnan gas transmission pipeline from the first round of the South Kuerle output, through Xinjiang, Gansu, Ningxia, Shaanxi, Shanxi, Henan, Anhui, Jiangsu Province, the end of eight of the crane to the town of Shanghai. Pipeline length of 4200Km, tube 1016mm, gas pressure of 10MPa, across the board is expected to run through the end of 2004.
Sichuan Basin province of Sichuan, Chongqing, in addition to the demand for natural gas, the end to lose by Zhongxian from the east by Hubei and Wuhan, and then north to the Xinyang Henan Province, the convergence of East and transmission of natural gas in Tarim to Shanghai, a total length of pipeline 811km, plan completed in 2003 .
Changqing gas field in Shaanxi-Gansu-Ningxia was completed by the end of 1998 to the field projects around the region, has now completed four natural gas pipelines:
1, Jing change the military to Xi'an, Baoji, Tongchuan;
2, Jingbian to Ningxia Hui Autonomous Region, Yinchuan;
3, Jingbian to Beijing's long-distance pipeline is planned to extend east from Beijing, Shandong;
4, Jingbian to Yulin, Yu Qing County.
"Russian gas for the South" will be China, Russia and South Korea in November 2, 2000 feasibility study on the signing of the agreement, pay close attention to the implementation plan completed in 2007 for three provinces in Northeast China and Bohai Sea region, Beijing Municipality, Tianjin Municipality, Hebei provinces, seven provinces and cities in Shandong Province.
Second, natural gas supply profile - gas systems and gas distribution systems
The general adoption of natural gas supply pipeline to the user, in many countries criss-cross the natural gas pipe network, facilities, planning cross-border gas pipeline are extremely active in the building activities. Have already referred in our country the construction of gas pipelines, in addition to natural gas supply pipeline, liquefied natural gas, and automotive vehicle compressed natural gas are two modes of supply more flexible.
Urban gas supply, the general received from the pipeline gas pipeline to the door station, with the measurement, voltage regulator, odorization functions (some are stored), in different cities and towns located within the pressure-level review of the gas pipeline system, gas distribution systems generally stem from pressure to control user access regulator Extension Station (me) during the low-voltage or medium voltage class B or gas boiler room for civilian and industrial users, urban gas pipeline design pressure P is divided into 7:
A2.5 times of high pressure gas pipeline High Pressure Gas Pipeline Gas Pipeline A0.8 in A0.2 low pressure gas pipeline P <0.01MPa
This article introduced the gas distribution system, gas design pressure 0.4MPa, the pressure valve selection of up to 1.6MPa.
Third, gas distribution system to the original requirements of the valve
The installation of the valve location and use of places: in the pressure gas pipeline located in the ground floor of the indoor valve, low-pressure regulator devices or pressure in front of B-class for each user set up the introduction of the total valve population, sub-valves, household and Then the total burning stove pipe, or load control valves, pressure regulator the General Logistics Department, the meter must be installed before and after the valve.
ball valve Trunnion Mounted Ball Valve Floating Ball Valve Top Entry Ball Valve Three way ball valve V Type Ball Valve
We can offer more Knife Gate Valve Information.If you need us according your spcification to produce the Knife Gate Valve .
Need, please e-mail to valve401@gmail.com y
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