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The existence of smoke exhaust and fire dampers is to eliminate the risk of fire and prevent the occurrence of fire. It is generally installed on the smoke exhaust pipeline of the mechanical smoke exhaust system to prevent smoke and fire. The fire damper produced through one pipe is a type of temperature control valve made of memory melting alloy, which utilizes the action of gravity and spring mechanism to close the valve. In new products, memory alloys are also used to generate deformation and close valves. Its function is that when the temperature of the flue gas reaches 280 ℃, people have basically evacuated and smoke exhaust has no practical significance. At this time, there is already a fire in the flue gas, and the valve automatically closes to avoid the spread of the fire. What precautions should we pay attention to when using smoke exhaust and fire dampers? Below is a brief introduction to the relevant knowledge points.

當排煙體系兼作透風空調體系時，不只需考慮透風時空氣調度要求，還要考慮發生發生火災時能靈敏排煙防火的要求，除此之外，排煙防火閥還合用于透風、空調管道裝在吊頂上，無法用人工手動復位的場合。圓防火閥，排煙防火閥合用于有防煙防火要求的透風空調體系的風管上，十分合用于設有鹵代烷氣體主動設備的重要建筑物，由于釋放氣體前要求封鎖一切的閥門，救活完畢之后，又應該翻開閥門來進行透風和排氣。

When the smoke exhaust system is also used as a ventilated air conditioning system, it is not only necessary to consider the air dispatch requirements during ventilation, but also the requirement of being sensitive to smoke exhaust and fire prevention in the event of a fire. In addition, smoke exhaust and fire dampers are also suitable for situations where ventilation and air conditioning pipelines are installed on suspended ceilings and cannot be manually reset. Circular fire dampers and smoke exhaust fire dampers are suitable for ventilation air conditioning systems with smoke and fire prevention requirements. They are very suitable for important buildings with halogenated alkane gas active equipment. Due to the requirement to block all valves before releasing gas, after the rescue is completed, the valve door should be opened for ventilation and exhaust.

排煙防火閥是主動化體系中的一個重要組成部門，它裝于現場操控流路，因此它是堵截流路防止可燃性流體通向火境的重要設備。在著火情況下排煙防火閥是翻開還是封鎖是很要害的。值得留意的是：由于排煙防火閥由操控室的調度器進行自控，并非人工操縱，因此排煙防火閥門的重要特征應該是：能飽嘗調溫而短期功課，或者是當千辛萬苦封鎖時應使泄露量較小。

Smoke exhaust and fire damper is an important component of the active system, which is installed on site to control the flow path. Therefore, it is an important equipment for blocking the flow path and preventing flammable fluids from entering the fire environment. It is crucial to open or close the smoke exhaust fire damper in case of fire. It is worth noting that due to the fact that the smoke exhaust fire damper is controlled by a dispatcher in the control room and not manually operated, the important feature of the smoke exhaust fire damper should be: it can fully experience temperature regulation and short-term homework, or it should be kept to a small leakage amount when it is difficult to block.

防火調節閥的標準，對調節閥填料函和其他密封部件進行調整，必要時應替代密封部件，堅持靜、動密封點的密封性。對需光滑的部件添加光滑油。對氣源或液壓過濾系統進行排污和清潔功課。查看各聯接點的聯接情況，侵蝕情況，必要時應替代聯接件。

The standard for fire control valves is to adjust the packing box and other sealing components of the control valve, and if necessary, replace the sealing components to adhere to the sealing performance of static and dynamic sealing points. Add smooth oil to the parts that need to be smooth. Conduct pollution discharge and cleaning work on the air source or hydraulic filtration system. Check the connection status and erosion of each connecting point, and replace the connecting parts if necessary.

防火、排煙閥門系列產品通用技術參數閥門框體和葉片選用鍍鋅鋼板制成，無焊點，外表無需涂裝風閥軸承材料為燒結青銅含油軸承，可耐300oC高溫，無需保護閥體厚度尺度尺度L=200mm,也可根據客戶需求生產各種特型尺度。

The general technical parameters of the fire and smoke exhaust valve series products are that the valve frame and blades are made of galvanized steel plate, without welding points, and the surface does not need to be coated. The bearing material of the air valve is sintered bronze oil bearing, which can withstand high temperatures of 300oC and does not require protection. The thickness scale of the valve body is L=200mm, and various special sizes can also be produced according to customer needs.

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