Water supply system for fire fighting truck and fire fighting truck

Abstract

The invention discloses a water supply system for a fire fighting truck and a fire fighting truck. The water supply system comprises a first water pump and a second water pump, wherein the water inlet of the first water pump communicates with a first water inlet pipe, and the water outlet of the first water pump communicates with an ejector of the fire fighting truck; and the water inlet of the second water pump communicates with a second water inlet pipe, and the water outlet of the second water pump is connected with the water inlet of the first water pump and the ejector of the fire fighting truck simultaneously. Importantly, the first water inlet pipe can be selectively connected or disconnected; the water supply system can be in at least two working modes; in the first working mode, the two water pumps can be connected in parallel, the inlet flow rate of the ejector is greatly improved, and the water supply system is suitable for short-distance occasions requiring high-flow pressing; and in the second working mode, the two water pumps are connected in series, the inlet pressure of the ejector is greatly improved, and the water supply system is suitable for long-distance high-floor fire fighting occasions. Compared with a conventional fire fighting truck, the fire fighting truck adopting the water supply system provided by the invention has the advantages that the total rated flow of the water pumps and the total rated power of a power source are both higher, and the fire fighting capability is also higher.

Description

technical field [0001] The invention relates to the field of fire protection, in particular to a water supply system of a fire truck and a fire truck. Background technique [0002] Due to the continuous expansion of floors and areas of modern buildings, the requirements for the water discharge capacity of fire trucks (ie: water flow and water pressure) are getting higher and higher in actual fire fighting. The water discharge capacity of existing fire trucks is determined by the rated power of the chassis engine, and the water discharge pressure capability is determined by the performance of the matching fire pump. In order to increase the flow and pressure of the water pump, the existing fire trucks usually adopt methods such as increasing the power of the chassis engine and selecting a large flow water pump. However, the rated power of the chassis engine and the rated flow of the water pump are limited, so the water output capacity of the fire truck is correspondingly lim...

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Problems solved by technology

However, the rated power of the chassis engine and the rated flow of the water pump are limited, so the water output capacity of the fire truck is correspondingly limited

[0003] In order to solve the above-mentioned problems, in the prior art, the first is to use dual power source equipment to increase the water flow rate through the parallel connection between the water pumps. However, due to the limitation of the power of a single power device, this equipment can only obtain a larger water flow rate. The water outlet pressure cannot be increased, that is, it is not suitable for long-distance and high-rise fire fighting; the second is the coupling operation mode of two fire trucks connected in series, and the pressure water output by one fire truck is directly injected into the water pump inlet of the main tank, and then passed through the main tank. Repressurization of the water pump increases the water outlet pressure, but the two fire trucks not only occupy a large area, but also are difficult to cooperate when supplying water to each other, and the operation is complicated

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