Deluge alarm valve group Solenoid valve

Mondo Cars Updated on 2024-01-29

According to GB50016-2014 "Code for Fire Protection Design of Buildings" 83.7. It is stipulated that in Class A and B workshops (such as the potassium chlorate grinding plant of the match factory), or in the Class A and B production areas of the plant (such as the paint booth of the paint workshop), special and first-class theaters, and studios with a construction area of not less than 400m should be equipped with rain automatic fire extinguishing systems.

The rain alarm valve is composed of structure.

The starting mode of the deluge automatic fire extinguishing system: 1) the transmission pipe is started, when the sprinkler head on the transmission pipe (containing liquid or gas) reaches a certain temperature and ruptures, the pressure in the transmission pipe decreases, resulting in the opening of the deluge alarm valve disc, the pressure switch action, and the fire pump is started2) Electric start, when the alarm area where the deluge alarm valve is located, two or more independent temperature sensing fire detectors or a temperature sensing fire detector and a manual fire alarm button alarm signal, linkage start the deluge alarm valveSolenoid valve action,Trigger the deluge alarm valve The valve disc is opened, the pressure switch is activated, and the fire pump is started3) Chain start, remote start through the fire linkage controller of the monitoring roomSolenoid valve action,

Deluge automatic fire extinguishing system start-up logic diagram.

It can be seen that the solenoid valve, as one of the components on the deluge alarm valve, has an important role and significance in the start of the deluge automatic fire extinguishing system and the control of water flow, so in the installation and maintenance of the solenoid valve, it is recommended to do the following.

Rain solenoid valve.

1) Under normal circumstances, the components on the deluge alarm valve are installed at the construction site, so when entering the site, you should check whether the brand, specification and model on the deluge alarm valve are configured according to the requirementsSolenoid valvesWhether it is missing or mechanically damaged.

2) When the solenoid valve is installed, it should be avoided that foreign objects fall into the valve body (such as more raw tape wrapped on the screws and fall in the valve body), which will affect the action of the solenoid valve and cannot be completely reset, and there is still water discharged.

The operating principle of the solenoid valve.

3) In order to avoid the influence of debris on the function of the solenoid valve, the pipe network should be flushed in strict accordance with the requirements to discharge the debris.

4) When the system is accepted, try to simulate the start of the deluge fire extinguishing system and whether the reset function of the solenoid valve is good through the action of the solenoid valve.

5) During the use and maintenance process, it should be regularly checked to: whether the wiring of the solenoid valve is good, whether the outlet pipe is rusty, and whether the fire protection remote start function is perfectAnd strictly control the misoperation of human reasons, resulting in the activation of the solenoid valve and the system.

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