Compressed air foam sprayer used for high-risk complex environment

A technology of compressed air foam and complex environment, which is applied in fire rescue and other directions, and can solve the problems of restricting the application environment of compressed air foam fire extinguishing system, lack of simultaneous prevention and control in different directions, difficulty in adapting to installation protection requirements, etc., and achieve a higher medium distribution density For consistency, easy disassembly, and improved fit performance

Inactive Publication Date: 2019-11-15
九江中船长安消防设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The fire gun is an injection part that is often equipped with compressed air foam. When working, it needs to be operated by hand to quickly control long-distance and short-distance fires, and the labor intensity of personnel is high. The application environment; especially in some high-risk and complex situations, where the fire heat radiation intensity is high and it is difficult for people to approach, the pipe network is preset on site, and the protection area is fully covered by the sprinkler type, which can improve the fire emergency capability in high-risk and complex environments
However, most of the existing nozzle styles are single nozzles, which are difficult to meet the installation and protection requirements in some special occasions, and lack the means to implement prevention and control in different directions at the same time

Method used

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  • Compressed air foam sprayer used for high-risk complex environment
  • Compressed air foam sprayer used for high-risk complex environment
  • Compressed air foam sprayer used for high-risk complex environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 , 2 As shown, a compressed air foam spray head for high-risk complex environments includes a spray head body, one end of the spray head body is provided with a liquid inlet 1, and the other end is a closed end, and the side wall of the spray head body is at least provided with a first liquid outlet port 2 and the second liquid outlet 3, the inside of the spray head body is provided with a mixing chamber, the mixing chamber communicates with the liquid inlet 1, the first liquid outlet 2, and the second liquid outlet 3; The inner wall of the mixing chamber is provided with a foam divider 101 .

[0033] Compared with a single nozzle, the distribution density of the medium at each point after the compressed air foam output of the present invention is more consistent, avoiding the blind area phenomenon that is easy to occur when suppressing a large-scale fire area, forming a single-point multi-directional fire suppression effect, which is conducive to impro...

Embodiment 2

[0035] This embodiment is a further optimization made on the basis of Embodiment 1, as Figure 2-6 As shown, specifically, the first liquid outlet 2 is threadedly connected with a centrifugal nozzle, and the centrifugal nozzle includes a nozzle pipe 201 and a centrifugal spray piece located inside the nozzle pipe 201, and the centrifugal spray piece includes a spray screw body 202. A number of vortex grooves 203 are opened on the side wall of the spray screw body 202 .

[0036] Specifically, the vortex grooves 203 are spirally distributed on the side wall of the spray screw body 202 .

[0037] The vortex grooves 203 are provided with 2-6 pieces. In this embodiment, 4 vortex grooves are provided, which can make the foam spray out in a radiating shape and further increase the coverage area of ​​the foam.

Embodiment 3

[0039] This embodiment is further optimized on the basis of Embodiment 2. Specifically, the foam divider 101 includes a hollow cylindrical panel adapted to the inner wall of the mixing chamber, and the side wall of the hollow cylindrical panel is provided with Several split holes 102;

[0040] Specifically, the diameter of the partition hole 102 is 3-10mm, preferably 5mm, and this setting can divide the compressed air foam into fine foam flows. If the hole diameter is too large or too small, it will greatly affect the expansion ratio, thereby affecting Foaming quality, the foam sprayed by the nozzle of the present invention has good stability, which solves the problem of uniform distribution of multi-point density of the compressed air foam fire extinguishing medium.

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PUM

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Abstract

The invention discloses a compressed air foam sprayer used for the high-risk complex environment. A sprayer body is included. A liquid inlet is formed in one end of the sprayer body, and the other endis a closed end. The side wall of the sprayer body is at least provided with a first liquid outlet and a second liquid outlet. A mixing cavity is formed in the sprayer body. The mixing cavity communicates with the liquid inlet, the first liquid outlet and the second liquid outlet. A foam divider is arranged on the inner wall of the mixing cavity. The first liquid outlet is connected with a centrifugal nozzle, and the second liquid outlet is connected with a limiting sprayer. Compared with a single sprayer, after compressed air foam is output, the media distribution density at each point is more consistent, the blind area phenomenon likely to happen during large-range fire disaster area suppressing is avoided, the single-point multi-direction fire behavior restraining effect is formed, andthe adaptation performance under the system high-risk complex environment can be better improved.

Description

technical field [0001] The invention relates to the field of firefighting equipment, in particular to a compressed air foam nozzle for high-risk and complicated environments. Background technique [0002] The fire gun is a commonly used spraying part of compressed air foam. When working, it needs to be operated by hand to quickly control long-distance and short-distance fires. The labor intensity of personnel is high; at the same time, the single terminal type also limits the compressed air foam fire extinguishing system Especially in some high-risk and complex environments, where the fire heat radiation intensity is high and it is difficult for people to approach, the pipe network is preset on site, and the sprinkler type is used to achieve all-round coverage of the protected area, which can improve the fire emergency capability in high-risk and complex environments. However, most of the existing nozzle styles are single nozzles, which are difficult to meet the installation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62C31/12A62C5/02
CPCA62C5/02A62C31/12
Inventor 刘海英曾忠华汪月勇杨振
Owner 九江中船长安消防设备有限公司
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