1. Trap the sparse amount of water:
Use traps, you must press equipment, the consumption of steam per hour multiplied by the selected magnification 2-3 times the maximum condensation of water, to select the trap displacement. Can we ensure that trap while driving discharge condensate as soon as possible, rapid increase in the temperature of heating equipment. Trap emission energy is not enough will cause condensation of water can not be discharged in time to reduce the thermal efficiency of heating equipment. (When the steam started to send steam heating equipment, the device is cold, inside filled with air, need to trap the air quickly discharged, and then row a large number of low-temperature condensation of water, gradually heat up the equipment, and equipment in normal working condition. As the car When a large number of air and low-temperature condensation of water, a lower inlet pressure, so that overload trap to run, this time Trap than normal working hours require a displacement of large, so use magnification by 2-3 times to select the trap.)
2. Trap working pressure:
Selected trap, the trap can not be selected nominal pressure, as nominal pressure can only say that traps body shell pressure rating, trap nominal pressure and work pressure varies greatly. Therefore, according to the work of pressure to select the trap displacement. Working pressure is the pressure minus the pre-trap trap the difference between exports of backpressure. After the back-pressure steam trap is calculated by: (when condensed water is discharged into the atmosphere after the steam trap, the trap back pressure is zero exports. If the concentration of traps discharge condensate recovery, this time, the export of back-pressure steam trap is a return to the resistance of pipes, water pipes back to a high elevation, the second evaporator (back to tank) and the internal pressure of the three.)
3. Mechanical-type steam traps Seat number:
Mechanical-type trap according to different working pressure section of the valve seat aperture is divided into a variety of specifications of "seat number", each segment of work pressure and the "seat number" composed of a coordinate displacement curve, different "seat number "of the sparse amount of water are very different. Mechanical-type traps should be based on process conditions of the maximum working pressure and the maximum displacement of the two curves corresponding to the coordinates of the election the right "seat number." Can not be determined nominal pressure to "seat number", if the wrong "seat number", there may be water in traps do not work or equipment, affecting the normal operation of equipment.
4. Trap operating temperature:
Use traps when the maximum temperature according to the steam pipes to choose the process conditions to meet the requirements of traps. The maximum temperature of more than nominal pressure steam pipe that corresponds to the saturated steam temperature referred to as superheated steam, superheated steam pipe selection in the trap, they should use special high-temperature high-pressure superheated steam trap.
5. Trap connection size:
The decision process conditions trap after the trap before and after the work under the pressure to drain water and the "seat number", according to the technical parameters of trap manufacturers to choose the size of trap specifications. (Can not connect the device size of random matching according to the same size of the trap, trap connection caliber can not represent the sparse amount of water the size of the same caliber of the trap, the hydrophobic capacity may vary widely; So when you use traps must be based on the device process conditions, in the light trap manufacturers matching parameters provided by the trap is the correct choice.) 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
No comments:
Post a Comment