The correct use of Isuzu dry powder fire trucks means that when a fire occurs, it can quickly and effectively extinguish the fire and protect people's lives and property. Isuzu dry powder fire trucks have strong fire extinguishing capabilities and can drop dry powder at the fire scene to control and eliminate the fire. It is also highly maneuverable and adaptable to a variety of environments and fire types, including buildings, vehicles, forests and more. The correct use of Isuzu dry powder fire trucks requires professional knowledge and skills, including understanding different fire spread patterns, taking appropriate extinguishing methods in a timely manner, and complying with operating procedures and safety regulations. Its correct use can minimize the losses caused by fire and protect the stability and development of society. 1. Working principle of dry powder nitrogen system a) When the dry powder fire extinguishing agent is launched, the system uses nitrogen as the power, and the gas potential energy is converted into kinetic energy to perform work, and the dry powder is ejected from the muzzle (or muzzle) to extinguish the fire. b) When working, open the nitrogen bottle head valve, the high-pressure nitrogen is reduced to 1.4MPa through the pressure reducing valve, open the inlet ball valve, and inflate the front and rear dry powder tanks. When the pressure inside the tank reaches 1.4MPa, the pressure reducing valve is in a balanced state and stops air intake into the tank. Open the powder discharge ball valve of the cannon (gun) to spray powder. The pressure in the tank will decrease, and the pressure reducing valve will automatically open, and continue to inflate the tank until the end of the work. c) Immediately after extinguishing the fire, close the powder discharge ball valve and inlet ball valve of the cannon (gun). The remaining gas in the nitrogen bottle will be used to purge the pipeline. Open the gun (gun) purge ball valve to purge. d) The dry powder tank is a pressure vessel containing dry powder. Nitrogen enters from the bottom of the tank through the pipe and strongly stirs the dry powder, making the mixture in the tank in a boiling state. When the pressure in the tank reaches the rated working pressure, open the powder discharge ball valve of the gun (gun). , the air powder flow is sprayed through the dry powder cannon (gun), and the pressure in the tank can be read from the pressure gauge on the cannon and the pressure gauge in the front equipment compartment. A safety valve is installed on the top of the dry powder tank to ensure the working safety of the dry powder tank. 2.Usage and operation methods A. Inspection before use 1) Check whether each purge ball valve, residual ball valve, and inlet ball valve are in the closed position. 2) Check whether the dry powder can rotate up, down, left and right flexibly. 3) Check whether the powder ball valve is in the closed position. 4) Check whether the dry powder ball valve and c...
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