An overcurrent high temperature cut-off valve

Abstract

The invention relates to an overflow high-temperature cut-off valve and belongs to the technical field of balance valves. The overflow high-temperature cut-off valve comprises a filtering mechanism, a high-temperature protection mechanism, an overflow protection mechanism and a valve cover, wherein the filtering mechanism, the high-temperature protection mechanism and the overflow protection mechanism are arranged in the valve cover in sequence; the high-temperature protection mechanism comprises a bracket, a spring I, a temperature sensing body and a sealing head; the bracket is positioned between the filtering mechanism and the sealing head; the spring I is sheathed on the bracket and is in a compressed state when being installed between the bracket and the sealing head; the temperature sensing body is positioned on one end of the bracket facing to the sealing head; the overflow protection mechanism comprises a spring II, a valve clack and a protective frame; the valve clack is arranged in the protective frame; the spring II is sheathed at the connecting position of the valve clack and the protective frame; and the valve clack and the sealing head are connected by a plug. The overflow high-temperature cut-off valve is applied to disconnection or connection with a gas pipeline, and has the advantages of under-pressure, overflow, high-temperature protection and filtering functions and the like.

Description

technical field [0001] The invention relates to an overcurrent high temperature cut-off valve, which belongs to the technical field of balance valves. Background technique [0002] In the known existing products, the conventional gas ball valve is equipped with a gas high temperature protection mechanism, which can prevent the hidden danger of gas leakage, or a gas safety self-closing valve equipped with a diaphragm. However, during use, impurities are likely to block the overcurrent device, which cannot be effectively protected; at the same time, it will fail at high temperature, causing gas leakage, and then explosion, etc. Specifically: [0003] 1) Lack of dust-proof parts or its structure is too complicated, and the over-current protection components are exposed, which will cause the parts to be corroded and blocked; [0004] 2) The product is in a failure state under high temperature conditions, and cannot guarantee that the gas will not leak; [0005] 3) There is no ...

AI Technical Summary

Problems solved by technology

However, during use, impurities are likely to block the overcurrent device, which cannot be effectively protected; at the same time, it will fail at high temperature, causing gas leakage, and then explosion, etc. Specifically:

[0003] 1) Lack of dust-proof parts or its structure is too complicated, and the over-current protection components are exposed, which will cause the parts to be corroded and blocked;

[0004] 2) The product is in a failure state under high temperature conditions, and cannot guarantee that the gas will not leak;

[0005] 3) There is no undervoltage protection function, and the product cannot function under the undervoltage state;

[0006] 4) The overcurrent flow has no large range, and can only act at a specific value, which is easy to be "misoperated"

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