Liquid gas storage tank decompression leakage safety valve and using method thereof

Abstract

The invention relates to a liquid gas storage tank decompression leakage safety valve and a using method thereof. When the environment temperature rises to reach the temperature set by a temperature-sensing element, the temperature-sensing element extends to enable a valve cover and two magnet rings to move upwards wholly, the two magnet rings and two upward repulsive forces to magnetic cores become downward repulsive forces to the magnetic cores, small springs are released, magnetic core sleeves are forced to downwards do axial motion, an air outlet hole I of a small valve body is plugged through a sealing cap, and supply of liquid gas is cut off; when fuel gas leaks, an electromagnet receives a driving source, a static iron core and a movable iron core generate attraction force, and thestatic iron core drives the valve cover to wholly and upwards do axial motion; and in the upward motion process of the valve cover and the two magnet rings, the two magnet rings and the two upward repulsive forces to the magnetic cores become downward repulsive forces to the magnetic cores, the small spring is released, the magnetic core sleeves are forced to downwards move, the air outlet hole Iof the small valve body is plugged through the sealing cap, and supply of the liquid gas is cut off. Dangers of explosion and person poisoning generated by liquid gas leakage are avoided.

Description

technical field [0001] The invention relates to a liquefied gas tank decompression leakage safety valve and its use method. When the liquefied gas tank is in use and the ambient temperature is too high, the liquefied gas can be cut off automatically, and it can also be closed electrically when the leakage concentration of the liquefied gas reaches a set value. The valve can also be closed manually. Background technique [0002] Liquefied gas tanks are currently widely used in urban and rural residential buildings, some enterprises and institutions, and kitchens in the catering industry. However, liquefied gas is flammable and explosive, so the hazards are mainly reflected in two aspects: 1. The leakage of liquefied gas before a fire may cause poisoning and explosion hazards. 2. After a fire occurs, the leakage of liquefied gas causes combustion and explosion, resulting in increased losses. During the use of liquefied gas, leakage accidents of liquefied gas occur frequently...

AI Technical Summary

Problems solved by technology

However, liquefied gas is flammable and explosive, so the hazards are mainly reflected in two aspects: 1. Leakage of liquefied gas before a fire may cause poisoning and explosion hazards

2. After a fire, the leakage of liquefied gas causes combustion and explosion, resulting in increased losses

[0005] The liquefied gas tank decompression safety valve solves the problem of burning and explosion caused by the leakage of liquefied gas when a fire breaks out.

[0006] However, there are still some deficiencies in the decompression safety valve of the liquefied gas tank. When the liquefied gas tank leaks, the valve cannot be automatically closed, and the safety of explosion or gas poisoning due to the liquefied gas tank leakage cannot be solved. Hidden problems

At the same time, the connection between the sealing cap and the valve stem of the liquefied gas tank decompression safety valve is not reliable enough, and it may fall off during actual use, which makes the work of the safety valve not reliable enough

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