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Pulsed jet fire-fighting lance

A pulse jet and water gun technology, applied in fire rescue and other directions, can solve problems such as unsatisfactory fire extinguishing effect and spray distance, and achieve the effects of improving water gun performance, improving jet quality and reducing recoil

Inactive Publication Date: 2012-10-17
HUBEI UNIV OF AUTOMOTIVE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current water gun generally adopts continuous jet flow, and the pressure jet flow from the high-pressure pump is continuously sprayed out through the nozzle. The flow of this jet flow is continuous, and the fire extinguishing effect and spray distance are not ideal.

Method used

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  • Pulsed jet fire-fighting lance

Examples

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Effect test

Embodiment Construction

[0011] Such as figure 1 As shown, the connecting piece 1, the rectifying device 2, the conical nozzle 3, the oscillation chamber 4 and the lower nozzle body 5 are sequentially installed on the same center line. Connector 1 adopts the common interface of fire hose, and the size of the interface of connector 1 remains unchanged. The diameter of the through hole of connector 1 is 56 mm. The rectification device 2 includes a pipe body 6 with an inner diameter of 60 mm. The pipe body 6 is divided into a stabilizing section and a rectifier. Between the connecting piece 1 and the rectifier is a stabilizing section 7 whose length is 1.5 to 2.5 times the diameter of the main pipe; Cone connection is adopted between them (cone angle is 1.7°); the rectifier adopts honeycomb type rectifier, including 4 to 10 steel pipes with a diameter of 10 to 25mm, the wall thickness of the steel pipes is 0.4 to 1mm, and the two ends of the steel pipes 8 are welded with the fixed plate 9, It should be ...

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Abstract

The invention provides a pulsed jet fire-fighting lance, which comprises a connecting piece, a rectifying device, a conical nozzle and a pulse nozzle hermetically and fixedly connected and communicated with one another in sequence, wherein the inlet of the rectifying device is hermetically and fixedly connected with the connecting piece; and other parts are in threaded connection and communication with one another through a sealing pipe. In the invention, the inlet end of the lance is provided with the rectifying device, so that the turbulence of jet is reduced, and the range is increased by 10-25 percent compared with the conventional lance; a continuous fluid flowing through an oscillation cavity is transformed into pulsed jet by using the special structure of the oscillation cavity without other additional auxiliary equipment; and the amplitude of outflow pressure is increased by 15-30 percent, so that the hitting dynamics and fire-fighting effect of the lance are enhanced under the condition of the same water flow, energy consumption is saved, and the performance of the fire-fighting lance is improved effectively. The pulsed jet fire-fighting lance can be widely applied to fire-fighting and cleaning systems of a fire-fighting system.

Description

technical field [0001] The invention relates to a high-efficiency energy-saving device in the fields of fire protection, cleaning and the like. The device can be widely used in the fire extinguishing and cleaning system of the fire fighting system, and it can improve the spraying distance and fire extinguishing effect of the jet stream of the fire water gun. Background technique [0002] At present, the jets of fire water guns are often divided into dense jets and scattered jets. Water guns that can spray dense jets, such as straight-line water guns and water guns with racks, and water guns that can spray scattered jets, such as spray water guns and flowering water guns. It is the water gun that acts on the water into different forms, so that the water passing through the water gun can not only achieve the purpose of quickly extinguishing the fire, but also be used to extinguish some fires that cannot be extinguished with water. The DC water gun is mainly used to spray dens...

Claims

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Application Information

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IPC IPC(8): A62C31/00A62C31/02
Inventor 王红霞王欢任爱华廖振方
Owner HUBEI UNIV OF AUTOMOTIVE TECH
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