氣體滅火系統設置過程中容易被忽略的問題
來源：http://www.xintli.net/ 日期：2022-06-21
實際上在氣體滅火系統設置過程中有多處問題容易被設計或者施工單位忽視，如防護區及隔斷不合格、泄壓口被忽略、未設置配套裝置等問題，所以說需要提前了解預防，下面來說幾個容易被忽略的問題吧。
In fact, in the process of setting the gas fire extinguishing system, there are many problems that are easy to be ignored by the design or construction unit, such as unqualified protection areas and partitions, neglected pressure relief ports, and no supporting devices. Therefore, it is necessary to know the prevention in advance. Here are some problems that are easy to be ignored.
啟動裝置
Starting device
對于氣體滅火系統的控制，主要是對防護區相關輔助設施的控制，而對于氣體滅火系統(或裝置)的啟動控制，沒有明確規定。氣體滅火有兩個基本特點：其一，設置場所特別重要;其二，滅火成本很高。在具體的工程實踐中，消防部門對于氣體滅火工程的設計審核意見書中，也常有“氣體滅火系統各防護區滅火控制系統的動作信息，應傳消防控制中心”的審核意見。因此，對于氣體滅火系統或裝置的控制，應引起設計人員的重視。
The control of gas fire extinguishing system is mainly the control of relevant auxiliary facilities in the protection area, while the start-up control of gas fire extinguishing system (or device) is not clearly specified. There are two basic characteristics of gas fire extinguishing: first, the setting place is particularly important; Second, the cost of fire fighting is very high. In specific engineering practice, the fire department's review opinions on the design of gas fire extinguishing projects often include the review opinions that "the action information of the fire extinguishing control system in each protection area of the gas fire extinguishing system should be transmitted to the fire control center". Therefore, designers should pay attention to the control of gas fire extinguishing system or device.
防護區未設聲光報警
No audible and visual alarm is set in the protection area
川消小編提醒您，防護區內應設火災聲光報警器，必要時，可增設閃光報警器。防護區的入口處應設火災聲、光報警器和滅火劑噴放指示燈，以及防護區采用的相應氣體滅火系統的性標志牌。滅火劑噴放指示燈信號，應保持到防護區通風換氣后，以手動方式解除。
Chuanxiao Xiaobian reminds you that fire audible and visual alarms should be set in the protection area, and flash alarms can be added if necessary. The entrance of the protection area shall be equipped with fire audible and visual alarms, fire extinguishing agent discharge indicators, and permanent signs of corresponding gas fire extinguishing systems used in the protection area. The fire extinguishing agent discharge indicator signal shall be released manually after ventilation in the protection area.
然而實際設計或施工中經常性會忽略，或只設一種報警裝置，或只在防護區內設置，然而在警告外面的人員“機房內發生火災”的同時，也應警告機房里面的工作人員，無人機房也存在平時檢修及維護的工作，也需要保證此時在30s內人員疏散。
However, in the actual design or construction, it is often ignored, or only one alarm device is set, or it is only set in the protection area. However, while warning the personnel outside of the "fire in the machine room", it should also warn the personnel inside the machine room. The unmanned machine room also has routine maintenance and repair work, and it is also necessary to ensure the safe evacuation of personnel within 30s at this time.
泄壓口未設置
Pressure relief port not set
實際施工或檢查中經常會出現：“配電房的門為防火門、檔案館門為防盜門”，均達不到自動泄壓的功能。有些工程實際施工還會依據：“圍護結構設有外開窗戶，或門窗未設密封條的，可不設置泄壓口”的說法，不計算泄壓口面積，均以門窗縫隙作為泄壓口進行泄壓，防護區極有可能因壓強過高而使圍護結構遭到破壞，會使得氣體防火區淹沒濃度不足導致滅火失敗。
In actual construction or inspection, it often appears that "the door of the power distribution room is a class a fire door and the door of the archives is a burglar proof door", which can not achieve the function of automatic pressure relief. The actual construction of some projects will also be based on the statement that "if the enclosure structure is equipped with external windows, or if the doors and windows are not equipped with sealing strips, the pressure relief port can not be set". The area of the pressure relief port is not calculated, and the door and window gap is used as the pressure relief port for pressure relief. The enclosure structure is likely to be damaged due to excessive pressure in the protection area, which will cause insufficient submergence concentration in the gas fire prevention area and fire extinguishing failure.
噴頭安裝失誤
Nozzle installation error
對于氣體滅火系統，根據保護區距瓶站距離不同，噴頭孔徑有所不同，但施工過程中常會不同防護區的噴頭錯誤搭配，從而影響滅火效果。對于氣體滅火系統,根據保護區距瓶站距離不同,噴頭孔徑應有所不同。但施工過程中常會出現防護區內噴頭不論距瓶站遠近都是同一口徑的鋼管，這必將對滅火藥劑的噴放效果產生影響。
For the gas fire extinguishing system, the nozzle diameter varies according to the distance between the protection area and the bottle station. However, during the construction process, the nozzles in different protection areas are often mismatched, thus affecting the fire extinguishing effect. For the gas fire extinguishing system, the nozzle aperture should be different according to the distance between the protection area and the bottle station. However, in the construction process, it often occurs that the sprinkler in the protection area is the same diameter steel pipe regardless of the distance from the bottle station, which will have an impact on the spraying effect of fire extinguishing agents.
川消小編認為沒有考慮氣體系統噴放時其高速噴出的氣流對防靜電地板的沖擊，導致地板被掀開，影響地板下空間的密閉性，從而影響氣體的噴放濃度;氣體滅火系統噴放時壓力高，噴放時間短，沖擊力大，而一些在地板下的噴嘴向上安裝，氣體噴放時高壓氣體直接沖擊靜電地板，極易掀開地板。為穩妥計，應將噴嘴向下或平行于地面安裝，且宜在噴嘴上安裝大口的鴨嘴套管，緩解出口處壓力過大的問題。
According to Chuanxiao Xiaobian, the impact of the high-speed air flow from the gas system on the anti-static floor was not considered, resulting in the floor being lifted, affecting the airtightness of the space under the floor, thus affecting the gas emission concentration; The gas fire extinguishing system has high pressure, short spraying time and large impact force. However, some nozzles installed under the floor are upward. When the gas is sprayed, the high-pressure gas directly impacts the electrostatic floor, which is very easy to lift the floor. In order to be safe, the nozzle should be installed downward or parallel to the ground, and a large duckbill sleeve should be installed on the nozzle to alleviate the problem of excessive pressure at the outlet.
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