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Compressed air foam fire-extinguishing apparatus

A technology of compressed air foam and fire extinguishing device, which is applied in the structural field of foam fire extinguishing device and compressed air foam fire extinguishing device, can solve the problems of pressure fluctuation, easy fluctuation, and difficulty in forming compressed air foam, so as to avoid system pressure fluctuation and system The pressure is stable and the effect of meeting the needs of fire extinguishing

Active Publication Date: 2010-01-27
南京消防器材股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of vacuum negative pressure suction pipeline using Venturi effect is prone to pressure fluctuations, which will adversely affect the mixing of gas and liquid.
At the same time, because the pressure is easy to fluctuate, it is inconvenient to adjust the foam mixing ratio, and it is difficult to form compressed air foam suitable for different stages of the fire scene

Method used

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  • Compressed air foam fire-extinguishing apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] This embodiment is a kind of compressed air foam fire extinguishing device that can be mounted on a vehicle, such as figure 1 As shown, the power compressed air provided by the air supply end of the screw air compressor 7 leads to the air inlets of the A-type foam liquid storage tank 8 and the B-type foam liquid storage tank 17 respectively through the valve 2, so that the foam liquid therein can flow from the foam liquid storage tank 17 respectively. The outlet is pressed out through another valve 2 and the three-way foam ratio control valve 9, and mixed with the pressure water in the three-way pressure water pipeline according to the required ratio; the pressure water here is provided by the water pump 1, and passes through the three-way pressure water pipeline. Ball valve 2, overflow valve 3, dry and wet foam control valve 4, one-way valve 6, after converging and mixing, enter the water-foam mixed flow pipeline; at the same time, the compressed air provided by screw a...

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PUM

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Abstract

The invention discloses a pressure-air fire fighting foam device for vehicle-carrying in the fire-fighting safety facilities technique domain, which comprises the following parts: water pump, bipeltate liquid container, air compressor, wherein the air feed end of air compressor connects to admission port of bipeltate liquid container through valve controlling conduit line; the bipeltate liquid conduit line form the exit of bipeltate liquid container passing through valve controlling conduit line and pressure pipe line from water pump conduit line passing through valve controlling conduit line converge for water bipeltate mixing flow conduit line; the compressed air conduit line form air feed end of air compressor passing through valve controlling conduit line and water bipeltate mixing flow conduit line converge for compressed air bipeltate liquid conduit line connecting to fire-fighting spraying device. The invention realizes that the compressed air bipeltate mixes free, which possesses steady system pressure.

Description

technical field [0001] The invention relates to a foam fire extinguishing device, in particular to a structure suitable for a vehicle-mounted compressed air foam fire extinguishing device, which belongs to the technical field of fire safety facilities. Background technique [0002] According to the applicant's knowledge, the water flow signal is used to control the rotational speed of the volumetric pump of the Class A foam liquid in compressed air Class A foam fire extinguishing at present, so as to realize the mixing of water and Class A foam in a prescribed proportion. During this process, the pressure of the compressed air and the mixed liquid is equalized by means of a pressure balance device, so that the compressed air enters the mixed liquid to form a two-phase flow. Although the above prior art has a higher degree of automation, it has complex structure, high cost and difficult maintenance. No matter it is an automatic compressed air Class A foam fire truck or a comp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62C31/00A62C27/00
Inventor 黄勇尹朝兰
Owner 南京消防器材股份有限公司
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