Anti-fill and anti-dismantle valve for liquefied gas cylinder

Abstract

The invention discloses an anti-charging anti-demounting valve for liquefied gas steel cylinders. The valve comprises a grip and a valve body, wherein the valve body is a three-way structure, the side opening is a charging port, the upper part is connected with the grip, and the lower part is connected with a valve bottom anti-demounting device; a valve top anti-demounting device is arranged in the vertical inner cavity of the valve body in the region above the charging part; an interference copper ring is arranged below the valve top anti-demounting device; and a valve core is arranged in the vertical inner cavity of the valve body in the region below the charging port. By arranging the double anti-demounting structures composed of the valve top anti-demounting device and the valve bottom anti-demounting device, the valve top anti-demounting device can only be demounted by a special demounting tool of a standard charging company, and the valve core in the middle region is provided with the anti-charging structure which can be charged only by a purpose-made air gun of the standard charging company, thereby ensuring the safety of the charged gas of the steel cylinder; and the valve bottom anti-demounting device is also an anti-demounting structure. By using the two anti-demounting structures and one anti-charging structure of the whole valve, the steel cylinder has favorable safety performance.

Description

technical field [0001] The invention relates to the technical field of liquefied gas filling, in particular to an anti-filling and anti-disassembly valve for a liquefied gas cylinder. Background technique [0002] In recent years, liquefied petroleum gas, as a new type of fuel, has rapidly entered thousands of households. However, due to the possible safety hazards of liquefied petroleum gas cylinders filled with liquefied petroleum gas, it will endanger the safety of users' personal and property safety. [0003] At present, in the liquefied gas filling industry, there are many informal filling points operating. These filling points have no filling qualifications, and the filling equipment and filling technology cannot meet the requirements stipulated by the state. There are great security risks. [0004] In order to ensure the safety of users' lives and property, the valves of the currently used liquefied gas cylinders have a fixed-point filling function, which makes the l...

AI Technical Summary

Problems solved by technology

[0005] However, in the actual use of the above-mentioned valves, illegal operation or malicious damage caused the failure of the limited filling of the liquefied gas cylinder, resulting in a relatively large safety hazard in the use of the liquefied gas cylinder, which seriously threatened the safety of life and property of users.

[0006] To sum up, how to improve the problem of limited filling failure of liquefied gas cylinders caused by illegal operation or malicious damage, so as to reduce the potential safety hazards in the use of liquefied gas cylinders, is currently a technical problem to be solved urgently by those skilled in the art

[0007] In the existing technology, the valve core is easy to be opened, and the non-standard filling point is directly inflated with an air gun, causing damage to the opening and closing of the valve core of the gas cylinder, which directly affects the safety of the cylinder

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