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A safety valve with high sealing performance

A safety valve and high-sealing technology, applied in the field of safety valves, can solve the problems of unguaranteed safety performance and poor sealing, and achieve the effects of reducing loss, simple structure and ensuring safe use.

Active Publication Date: 2018-02-06
JIANGSU HUATAI ELECTRIC POWER ELECTRONICS INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The valve stem of the spring-loaded safety valve is generally an integral structure, but when the spring-loaded safety valve is in a closed state, the sealing performance is not good, and the safety performance cannot be guaranteed.

Method used

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  • A safety valve with high sealing performance
  • A safety valve with high sealing performance
  • A safety valve with high sealing performance

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Embodiment Construction

[0015] As shown in the figure, a safety valve with high sealing performance includes a valve body 1, a valve cover 2, a pressure rod 3, a gland 4, a spring 5 and a gasket 6. The valve body 1 is a hollow structure, and the inside of the valve body 1 A circle of first protrusions 7 is provided to separate the main passage 8 and the adjustment chamber 9 in the valve body. The main passage 8 and the adjustment chamber are connected with each other. The inner diameter d1 of the main passage 8 the outer diameter d4 of the jacking part 12, the push-out part 13 is a tapered structure, the valve cover 2 is provided with a gasket fixing cavity 14, and the inner wall of the gasket fixing cavity 14 is provided with an internal thread 15 The gasket 6 includes a first gasket 16 and a second gasket 17, the first gasket 16 is a ring structure, the outside of the first gasket 16 is provided with an external thread 18, and the external thread of the first gasket 16 18 cooperates with the interna...

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Abstract

The invention relates to a safety valve with high sealing property. The safety valve comprises a valve body, a valve cover, a pressure rod, a pressure cover, a spring and a sealing pad, wherein the valve cover comprises a main body part, an ejector part and a punching part which are integrated; the main body part and the ejector part are cylindrical structures; the ejector part is a tapered structure; a sealing pad fixing cavity is formed in the valve cover; the sealing pad comprises a first sealing pad and a second sealing pad; the first sealing pad is fixed on the valve cover; a ring of third convex ribs is arranged on the first sealing pad; the second sealing pad is fixed in the first sealing pad in an interference fit mode; a second lug is arranged on the second sealing pad; a sealing cavity which is of a circular ring shaped structure is formed between the second bump and the third convex ribs; the sealing cavity is in clearance fit with a second convex rib; a pressure rod channel is arranged on the pressure cover; the pressure rod is fixed at one end of the valve cover through a bolt; the spring is arranged on the outer part of the pressure rod in a sleeving mode; and the pressure rod penetrates through the pressure cover, so that the spring is fixed between the valve cover and the pressure cover. The safety valve is simple in structure, good in sealing property and relatively safe and reliable.

Description

technical field [0001] The invention relates to a safety valve, in particular to a safety valve with high sealing performance. Background technique [0002] The safety valve is automatically opened and closed according to the working pressure of the pressure system. It is generally installed on the equipment or pipeline of the closed system to protect the safety of the system. Its operation reliability and performance are directly related to the safety of equipment and personal safety. There are two main types of safety valves: spring type and lever type. The spring type means that the sealing between the valve disc and the valve seat depends on the force of the spring. The valve stem of the spring-loaded safety valve is generally a one-piece structure, but when the spring-loaded safety valve is in a closed state, the sealing performance is not good, and the safety performance cannot be guaranteed. Contents of the invention [0003] The technical problem to be solved by ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K17/06F16K1/46
CPCF16K1/46F16K17/0413F16K17/06
Inventor 陈道金
Owner JIANGSU HUATAI ELECTRIC POWER ELECTRONICS INSTR
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