Built-in gravity safety valve used for movable storage tank

Abstract

The invention discloses a built-in gravity safety valve used for a movable storage tank, comprising a valve body and a shell in threaded connection with the valve body, wherein a first fluid medium passage is arranged on the shell, second and third fluid medium passages are arranged on the valve body, the lower end of the third fluid medium passage is set to be a tapered sealing surface; a support plate is arranged in the part of the shell, located below the first fluid medium passage; a universal ball is arranged on the spherical concave surface of the center part of the support plate, a sphere support is fixedly arranged at the upper part of the universal ball, a sphere valve core matched with the inner surface of the tapered sealing surface is arranged on the sphere support; and a rigid shaft is connected to the bottom of the spherical concave surface, and a counterweight is connected to the lower end of the rigid shaft. The built-in gravity safety valve has the advantages of being capable of well handling fault and accidental damage of a valve outside the storage tank, and having an emergency self-start function, thus providing an effective way for promoting the intrinsic safety of hazardous chemical substance storage tanks.

Description

technical field [0001] The present invention relates to a safety valve, and more particularly, the present invention relates to a built-in gravity safety valve for a mobile storage tank. Background technique [0002] At present, in the mobile storage tanks for hazardous chemicals in use at home and abroad, the control valves for the fluid medium channels are all set outside the storage tanks. This setting method has the following disadvantages: [0003] (1) In the event of an accident, once the control valve of the fluid medium channel is damaged or fails by impact, the leakage of the fluid medium will not be controlled, which will inevitably bring great difficulties to subsequent emergency fire fighting; [0004] (2) If the above problems are not handled properly, it will often lead to escalation of accidents and even environmental pollution, which will greatly endanger the lives of personnel. Contents of the invention [0005] The object of the present invention is to s...

AI Technical Summary

Problems solved by technology

[0003] (1) In the event of an accident, once the control valve of the fluid medium channel is damaged or fails by impact, the leakage of the fluid medium will not be controlled, which will inevitably bring great difficulties to subsequent emergency fire fighting;

[0004] (2) If the above problems are not handled properly, it will often lead to an escalation of the accident or even cause environmental pollution, which will cause great harm to the life safety of personnel.

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