Smoke damper valve applications in engineering quality requirements (a)

1, fire damper, exhaust valves are mainly used for



And other types of high-level modern buildings are equipped with ventilation, air-conditioning and smoke control system, in the event of fire, these systems will become the flame of the pipe, flue gas channel spread. In order to prevent the fire spread through the air duct, in the "architectural design code for fire protection" GBJ16-87 and the "Code for Fire Protection Design of Tall Buildings" GB50045-95 are clearly defined in the fire dampers, smoke



Requirements valve settings.



Fire dampers in ventilation and air conditioning system to send back to the wind pipe on the road, was open in peacetime, when the event fires, pipeline gas temperature reaches 70 ℃ when the closure of its own, and in a certain period of time to meet the fire-resistant stability and fire resistance the integrity of the requirements of the role played Fire smoke. Exhaust valve in the exhaust system or exhaust pipe of the suction fan at the entrance, was closed in peacetime, when the fire broke out when, through the fire alarm signal to open the valve manually or automatically, in accordance with the smoke extraction system, when the pipeline within the flue gas temperature reaches 280 ℃ automatically shut down, and within a certain period of time to meet the integrity of fire-resistant stability and fire resistance requirements, since the role of smoke Fire.



2, damper, exhaust valve in the ventilation and air conditioning, smoke control system to the important role of



Fire damper fire damper including gravity, fire control valve, fire air, pneumatic damper, smoke damper, electronic control products such as smoke damper; smoke damper valve, including smoke, I smoke Plate ( roof used), vertical mouth with smoke and other products. Fire damper, exhaust valve is ventilation, air-conditioning and smoke control system an important component in the system, the important role played by the following three aspects:



2.1, the role of smoke Fire



In the air supply system, air blower must be sent through the trunk to the branch pipe of the distribution; in the smoke extraction system, the flue gas from the branch to the trunk pipe, the smoke into the exhaust fan. When the building when fire broke out in the ventilation and air conditioning systems, in order to prevent the spread of fire through the air supply system, when the air supply system in the gas temperature reaches 70 ℃, the damper on the fuse body movements, the rapid clearance valves are valves to cut off the flue gas duct and the fire spread along the access road. Similarly, in the smoke extraction system, the case of fire, smoke valve open, the smoke, in order to cut off high-temperature flue gas flow in the exhaust pipe to prevent the fire from spreading to another fire district, when the flue gas exhaust temperature reached 280 ℃, the smoke fire dampers, smoke mouth movements on the fuse, must be self-closing valves to prevent the smoke. This shows that the fire damper, exhaust valve to achieve the General Qualcomm, which were broken off Fire the role of smoke. ball valve Trunnion Mounted Ball Valve Floating Ball Valve Top Entry Ball Valve Three way ball valve V Type Ball Valve
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