Fire extinguishing system and fire engine containing the same

Abstract

The invention discloses a fire extinguishing system, comprising a fire extinguishing medium pot and a plunger pump for pumping the fire extinguishing medium. The plunger pump comprises two plunger groups consisting of a medium cylinder and an oil cylinder; a medium cylinder piston and an oil cylinder piston of each plunger group conduct synchronous displacement; and a flow passage port of a cylinder barrel of each medium cylinder is communicatively provided with an unidirectional conductive inflow non return valve from outside to a cavity of the cylinder barrel and an unidirectional conductive outflow non return valve from the cavity of the cylinder barrel to an external outlet; the inflow non return valve communicates with the fire extinguishing medium pot; the two oil cylinders are configured in a way of alternative telescoping by controlling of a control valve. The plunger pump of the present invention employs two oil cylinders for alternative advancing and recession to drive alternative movements of the two medium cylinder pistons, so as to realize switching between two working states respectively. Compared with a prior art, the fire extinguishing system of the invention can effectively increase an output flow and water usage pressure on the premise of continuous non-intermittent water supply. Based on the fire extinguishing system, the invention also provides a fire engine containing the fire extinguishing system.

Description

technical field [0001] The invention relates to engineering machinery technology, in particular to a fire-fighting system and a fire-fighting vehicle equipped with the fire-fighting system. Background technique [0002] As the overall height of commercial and civil super high-rise buildings continues to rise, powerful fire-fighting equipment such as fire trucks are required to fight fires in super high-rise buildings. One of the difficulties in the fire-fighting system is the difficulty of water supply. However, it is difficult for existing common fire trucks to reliably meet the needs of actual fire fighting. [0003] At present, traditional fire trucks are roughly divided into two categories: water tank fire trucks and elevating fire trucks. Among them, the water tank fire truck has a fire pump, a large-capacity water storage tank, a water gun, and a water cannon. Water supply for fire trucks and fire sprinkler equipment. Among them, the high-lift fire truck has a speci...

AI Technical Summary

Problems solved by technology

[0004] Yet all there is deficiency in above-mentioned various types of fire engines

For fire trucks with ordinary fire pumps, due to the limited lift of the fire pumps in the fire protection system, the fire occurs at a higher position in a super high-rise building, and the water supply pressure of the fire pump is obviously insufficient

Especially, the water tank fire truck that has common fire pump is faced with this problem equally, for overcoming above-mentioned deficiency, the hand-pump pump in series usually connects pressurized water supply ( figure 1 As shown), the combat capability is restricted, and it is impossible to independently complete the fire fighting task of super high-rise buildings

The elevating fire trucks with ordinary fire pumps usually use multiple vehicles in series to supply water, and after pressurization, they are sprayed to the ignition point (such as figure 2 As shown), obviously, multi-vehicle series requires multiple interfaces, and the probability of failure of the interface and the connecting hose increases, which directly affects the operation efficiency and the effective control of the fire

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