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Liquid nitrogen fire-fighting truck and ejecting gun

A technology for spray guns and fire trucks, applied in fire rescue and other directions, can solve the problems of large opening torque, poor applicability of fire extinguishing agents, poor sealing performance of spray guns, etc., and achieve the effects of good sealing performance, good fire extinguishing effect, and good protection effect.

Inactive Publication Date: 2004-08-25
姜华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the fire extinguishing agent leaks seriously during the implementation of fire extinguishing, which makes the selection of fire extinguishing agent poor applicability, that is, most of them can only use water as the fire extinguishing agent
When using ultra-low temperature fire extinguishing agents such as liquid nitrogen or gaseous fire extinguishing agents such as carbon dioxide, the leakage of fire extinguishing agent caused by the poor sealing of the existing spray gun is likely to cause serious consequences
[0003] Most of the existing spray guns use ball valves, which have poor sealing performance, and there is a risk of leakage, especially when used to spray ultra-low temperature liquids or harmful gases.
In addition, its opening torque is large, it is laborious to open and close, and it is inconvenient to operate.

Method used

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  • Liquid nitrogen fire-fighting truck and ejecting gun
  • Liquid nitrogen fire-fighting truck and ejecting gun
  • Liquid nitrogen fire-fighting truck and ejecting gun

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] as attached figure 1 As shown, the spray gun is composed of a gun body 5, a valve core assembly, and a trigger 4. The gun body includes an inlet cavity 1, an outlet cavity 2, and a valve core assembly accommodating cavity 3. and gasket 8 for sealing; the valve core assembly is composed of an inner core 18, an outer core 15, and a valve stem 13, the inner core 18 is screwed and fastened to the valve stem 13, and the outer core 15 has a groove 16 on the side close to the valve stem 13 , There is a hole at the bottom of the groove 16, the inner core 18 is placed in the groove 16 and the tip of the inner core 18 extends into the hole at the bottom of the concave 16; the inner core 18 has an annular inner core cap 19, by which the inner core cap 19, and the locking cover 17 on the concave 16 connects the inner core 18 with the outer core 15, and there is a gap between the inner core cap 19 and the outer core groove 16 wall, and between the inner core cap 19 locking covers 17...

Embodiment 2

[0029] The liquid nitrogen fire truck shown in Figure 2. It consists of a car 23, a liquid nitrogen storage tank 25 and a spray gun 33 installed on the car.

[0030] The liquid nitrogen storage tank 25 is made of four layers of steel, welded and fitted. Outlet pipes are welded between each layer respectively, and each pipe is respectively connected with a high vacuum valve 28 to communicate with each other.

[0031] Gas and liquid phase space in liquid nitrogen storage tank 25 liner are connected with liquid level gauge 26, pressure gauge 27, safety valve main pipe valve 30, safety valve 29, full indication valve 31, discharge valve 32, and are connected.

[0032] The internal pressure booster system of the inner tank of the liquid nitrogen storage tank is a liquid phase connecting pipe drawn from the inner bottom of the inner tank, a supercharger 36 inlet liquid inlet electric valve 37, a supercharger 36, a gas outlet valve 35 at the outlet of the booster port 36, The gas p...

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PUM

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Abstract

The present invention relates to a liquid nitrogen fire engine and spray gun. Said fire engine consists of automobile, liquid nitrogen storage tank, spray gun and GPS system. The liquid nitrogen is stored in the inner container of liquid nitrogen storage tank, the exterior of said liquid nitrogen storage tank is covered with three layers of steel tank, the gap between layers is filled up with insulating material and vacuumized, and the accessories communicated with inner container include pressure gauge, level gauge, safe valve, booster, various valves, pump and spray gun. Said spray gun consists of gun body, valve core component and trigger. Said fire engine utilizes GPS speech gateway and monitoring terminal to implement automatic location and communication.

Description

Technical field: [0001] The invention relates to a liquid nitrogen fire engine and a spray gun. Background technique: [0002] Existing fire engine, the spray gun that it uses also mostly is aforementioned kind. Its shortcoming is that when carrying out fire extinguishing, fire extinguishing agent leaks seriously, makes the selection applicability of fire extinguishing agent poor, promptly most can only use water as fire extinguishing agent. When using ultra-low temperature fire extinguishing agents such as liquid nitrogen or gaseous fire extinguishing agents such as carbon dioxide, leakage of fire extinguishing agents caused by poor sealing of existing spray guns is likely to cause serious consequences. [0003] Most of the existing spray guns use ball valves, which have poor sealing performance, and there is a danger of leakage during use, especially when used for spraying ultra-low temperature liquids or harmful gases. In addition, the opening torque is large, the openi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62C27/00A62C31/03
Inventor 姜华扬谷
Owner 姜华