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Safety type cylinder valve

A gas cylinder valve and safety-type technology, applied in the field of engineering components, can solve the problems of safety hazards for users and nearby personnel, and the lack of gas cylinder valve protection functions, etc., to eliminate safety hazards, prevent gas cylinder impact, and ensure safe use Effect

Active Publication Date: 2013-06-19
SHANGHAI BAOYA SAFETY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Under the pressure of 300bar, the safety performance of the gas cylinder valve is particularly important. Once the gas cylinder valve breaks, the high-pressure compression space in the gas cylinder will be released instantly, and the huge impact will make the whole gas cylinder look like a shell Flying out, which is a very big safety hazard for the user and nearby personnel
However, none of the gas cylinder valves currently used in the market has the protection function after the gas cylinder valve is accidentally disconnected

Method used

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Embodiment Construction

[0022] The following will further describe the safety gas cylinder valve of the present invention according to specific embodiments of the present invention and accompanying drawings, but the description does not constitute a limitation of the present invention.

[0023] In this embodiment, an overcurrent protector 1 is installed at the bottom of the connection between the valve body 3 and the gas cylinder 2, and the overcurrent protector 1 and the valve body 3 are connected by threads and sealed with an O-shaped gasket 4, as figure 1 shown.

[0024] figure 2 The split structure of the overcurrent protector in this embodiment is shown. image 3 The cross-sectional structure of the overcurrent protector is shown. Such as figure 2 and image 3 As shown, the overcurrent protector 1 in this embodiment includes a restrictor body 5 , a piston limit spring 6 , a hollow restrictor piston 7 and a filter 8 . The flow restrictor main body 5 has a first cavity 14 for gas transmissi...

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Abstract

The invention discloses a safety type cylinder valve which comprises a valve body. The bottom of the valve body is connected with an overflow protector which comprises a flow limiter main body, a hollow flow-limiting piston and a piston limiting spring. A first cavity and a second cavity are formed inside the flow limiter main body, wherein the first cavity is used for gas transferring, the second cavity is linked up with the first cavity, and a conical seal seat is arranged at a linkage position of the first cavity and the second cavity. The hollow flow-limiting piston is arranged inside the second cavity and can move inside the second cavity in the axial direction. A conical seal surface is arranged on the upper end portion of the flow-limiting piston, and is matched with the seal seat to form a seal. An axial flow-limiting hole is formed on the upper end portion of the flow-limiting piston which is further provided with a radial overflow hole. The piston limiting spring is arranged between the flow limiter main body and the flow-limiting piston so as to exert axial force on the flow-limiting piston. The safety type cylinder valve is capable of preventing the impacting danger of a gas cylinder after the sudden failure of the cylinder valve.

Description

technical field [0001] The invention relates to an engineering component, in particular to a gas bottle valve. Background technique [0002] At present, positive pressure air respirators are widely used in various fields such as fire protection, rescue, metallurgy, chemical industry, shipbuilding and military as respiratory protection equipment. Its working principle is to store clean compressed air through a high-pressure cylinder, release it to the first-stage pressure reducing valve through the cylinder valve, and then enter the full-face mask after being decompressed by the air supply valve for the second time, and finally provide the wearer with the mask for breathing. . Among them, the cylinder and cylinder valve carrying high-pressure compressed air play a vital role. [0003] Under the pressure of 300bar, the safety performance of the gas cylinder valve is particularly important. Once the gas cylinder valve breaks, the high-pressure compression space in the gas cyl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C13/04F17C13/02
Inventor 张守政李成俊
Owner SHANGHAI BAOYA SAFETY EQUIP
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