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Medium/high-pressure fine water mist nozzle with wind resistance and wind resistance application method thereof

A technology of fine water mist nozzle and application method, which is applied in fire rescue and other directions, can solve the problems of inability to solve the problem of nozzle wind resistance, and cannot improve the effective atomization cone angle, so as to achieve good overall fire extinguishing performance, improve wind resistance performance, The effect of improving the application ability

Pending Publication Date: 2017-08-01
STATE GRID HUNAN ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of nozzle has a strong penetrating ability and is suitable for extinguishing deep fires, but it cannot improve the effective atomization cone angle under windy conditions, so it still cannot solve the overall wind resistance problem of the nozzle

Method used

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  • Medium/high-pressure fine water mist nozzle with wind resistance and wind resistance application method thereof
  • Medium/high-pressure fine water mist nozzle with wind resistance and wind resistance application method thereof
  • Medium/high-pressure fine water mist nozzle with wind resistance and wind resistance application method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] see figure 1 with figure 2 , the medium-high pressure fine water mist nozzle of the present embodiment adopts the showerhead type nozzle housing 4, and 7 fine water mist nozzles are arranged on the nozzle housing 4, wherein one nozzle sprays along the axial direction of the showerhead type nozzle housing, and the remaining 6 The nozzles are sprayed along the side of the shower head housing, and the side sprayed fine water mist nozzles are evenly distributed around the axial sprayed fine water mist nozzles. Each fine water mist nozzle is threadedly connected to the nozzle housing, and the inner cavity of the nozzle housing communicates with the inner cavity of each fine water mist nozzle. In this embodiment, the axial spray fine water mist nozzle adopts the first swirl fine water mist nozzle 1 ( Figure 7 with Figure 8 shown), the atomization cone angle is 55°, and the flow coefficient K is 1.5. The water mist nozzle for lateral injection adopts the second swirl wa...

Embodiment 2

[0041] see image 3 with Figure 4 , the medium-high pressure fine water mist nozzle of the present embodiment adopts the showerhead type nozzle housing 4, and 7 fine water mist nozzles are arranged on the nozzle housing 4, wherein one nozzle sprays along the axial direction of the showerhead type nozzle housing, and the remaining 6 The nozzles are sprayed along the side of the shower head housing, and the side sprayed fine water mist nozzles are evenly distributed around the axial sprayed fine water mist nozzles. Each fine water mist nozzle is threadedly connected to the nozzle housing, and the inner cavity of the nozzle housing communicates with the inner cavity of each fine water mist nozzle. In this embodiment, the axial spray fine water mist nozzle adopts the first swirl fine water mist nozzle 1 ( Figure 7 with Figure 8 shown), the atomization cone angle is 55°, and the flow coefficient K is 1.5. The water mist nozzle for side jetting adopts the first swirl water mi...

Embodiment 3

[0043] see Figure 5 with Image 6 , the medium and high pressure water mist nozzle of the present embodiment adopts a showerhead type nozzle housing 4, and 7 fine water mist nozzles are arranged on the nozzle housing 4, wherein one fine water mist nozzle sprays along the axial direction of the showerhead type nozzle housing, The other 6 fine water mist nozzles are sprayed along the side of the shower head housing, and the lateral sprayed fine water mist nozzles are evenly distributed around the axial sprayed fine water mist nozzles. Each fine water mist nozzle is threadedly connected to the nozzle housing, and the inner cavity of the nozzle housing communicates with the inner cavity of each fine water mist nozzle. The axial spray fine water mist nozzle adopts direct spray fine water mist nozzle 3 ( Figure 11 with Figure 12 shown), the atomization cone angle is 30°, and the flow coefficient K is 1.0. Two kinds of water mist nozzles, direct jet and swirl, are uniformly cr...

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Abstract

The invention discloses a wind resistance application method of a fine water mist nozzle and a medium / high-pressure fine water mist nozzle with wind resistance. Multiple fine water mist nozzles are arranged in the axial direction and the lateral direction of a lotus nozzle shell; the nozzles adopt 2 to 3 types of direct injection and cyclone fine water mist nozzles with different atomization characteristic parameters; and more than one direct injection and / or cyclone fine water mist nozzles are arranged in the axial direction of the nozzle shell, and more than four direct injection and cyclone fine water mist nozzles are uniformly intersected in the lateral direction of the nozzle shell, so that fine water mists are respectively sprayed in the axial direction and the lateral direction of the nozzle shell to guarantee an effective atomization conical angle of the fine water mist nozzle under the working condition of wind. The influence of the fine water mist nozzle by the wind in use is lower than the influence of a traditional single cyclone nozzle; and under the working condition of no wind or wind, the fine water mist nozzle can enable the fine water mists to cover all fire protecting ranges, so that the excellent overall fire extinguishing performance is guaranteed, the application capacity of the fine water mist nozzle in outdoor wind environment is improved, and the fine water mist nozzle is suitable for outdoor popularization and application.

Description

technical field [0001] The invention relates to a method for applying the wind resistance of a medium-high pressure fine water mist nozzle, which is suitable for application in an outdoor windy environment and can improve the wind resistance performance of the fine water mist nozzle. Background technique [0002] Water mist fire extinguishing technology is an emerging water fire extinguishing technology, which uses a fine water mist nozzle to decompose the water flow into diameters Dv 99 (Particle size with a volume fraction of 99%) smaller than 400µm for fire extinguishing. Atomization of water medium can increase the surface area per unit volume of liquid, improve heat absorption efficiency, and promote the interaction with flames, so as to achieve efficient use of vaporization heat absorption to cool combustibles, volume expansion and oxygen isolation, and absorption of heat radiation to reduce heat feedback, etc. To weaken the effect of combustion chemical reaction spee...

Claims

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Application Information

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IPC IPC(8): A62C31/05
CPCA62C31/05
Inventor 陆佳政陈宝辉李波梁平周特军谭艳军
Owner STATE GRID HUNAN ELECTRIC POWER
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