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2020 first-level fire engineer technical practice knowledge points: pipe network fire extinguishing system

点击量: Release time: January 9, 2020 10:05:57 Source: Global Online School Traffic:

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    [Abstract] 2020 first-level fire engineer exam preparation has begun. Global Online School has organized "2020 First-Class Fire Engineer Technical Practice Knowledge Points" for you. More test preparation materials, simulated test questions, and real questions over the years, please continue to pay attention to Global Online School First class fire engineer exam channel!

    Related recommendations: Summary of technical practice knowledge points of first-class fire engineers in 2020

    Pipe network fire extinguishing system

    (I) System working principle

    Pipe network fire extinguishing system works

    (Two) system control method

    1.Automatic control

    When the control mode selection key on the fire extinguishing controller is set to the "automatic" position, the fire extinguishing system is in an automatic control state. When a fire occurs in the protective area, the smoke detector and the temperature detector simultaneously emit a fire signal (when there is only one signal, (Only the alarm does not start), the alarm fire control controller will issue an audible and light alarm signal, and at the same time issue a linkage command, close the fan, fire valve and other linkage equipment, after a delay time, issue a fire command, open the electromagnetic bottle head valve to release the starting gas The starting gas opens the corresponding selection valve and bottle head valve through the starting pipeline, releases the fire extinguishing agent, and implements the fire extinguishing.

    2.Manual control

    When the control mode on the fire suppression controller is set to the "manual" position, the fire suppression system is in the manual control state. When a fire occurs in the protective area and the fire detector sends out a fire signal, the controller only alarms and does not start the fire extinguishing device. After the person confirms the fire, they can press the emergency control button on the manual control box outside the protective area or the controller to press The prescribed procedures start the fire extinguishing system to release the fire extinguishing agent and implement the fire extinguishing. In the automatic control state, electrical manual control can still be realized.

    3.Emergency operation of machinery

    When a fire occurs in the protective area and the controller fails to issue a fire extinguishing instruction, the relevant personnel should be notified to evacuate the site, close the linkage equipment, and then pull out the safety latch on the corresponding solenoid bottle head valve. The solenoid can be opened by operating the handle and released Start the gas. Start the gas to open the selection valve, bottle head valve, release the fire extinguishing agent, and extinguish the fire.

    Another: emergency stop operation

    When the fire alarm has been issued, but an abnormal situation (false positive) is found within the delay time, and the fire extinguishing system does not need to be started to extinguish the fire, you can stop the controller by pressing the emergency stop button on the manual control box or the controller. Issue of fire fighting instructions.

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    ”页面进行下载学习。 Global Network Alumni Tips: The above is the "2020 First-Class Fire Engineer Technical Practice Knowledge Point" organized by the Global Network School Fire Engineer Channel. For more simulated test questions, real questions over the years, high-frequency test sites, test preparation strategies, please click below " Free Download "page for download learning.

    share to: Edit: Sun Qing

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