Small pressure release valve

A pressure relief valve, a small technology, applied in the field of pressure relief valve, can solve the problems of low precision, high cost, leakage, etc., to achieve the effect of large circulation space, fast and simple adjustment method, and guaranteed sealing effect

Pending Publication Date: 2021-09-28
THE 40TH RES INST OF CHINA ELECTRONICS TECH GRP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sealing system of the bursting needle type pressure relief butterfly valve is relatively fragile, which is easy to cause leakage, and the pressure relief trigger mechanism is too complicated, the precision is not high, and the cost is too high; the pilot plunger valve is quite complicated, and it is directly connected with the main valve, which has limitations in use , not suitable for high temperature and low pressure occasions

Method used

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] See figure 1 , a small pressure relief valve, including a valve body 1, a valve stem, a spring 3, a precompression force adjusting nut 4 and a lock nut 5;

[0029] The outer wall of the front end of the valve body 1 is a barbed buckle structure 11, and the rear end of the valve body 1 is a flange sealing connection structure or an external thread sealing connection structure 12 (see figure 2 ), wherein the flange sealing connection structure includes ...

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PUM

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Abstract

The invention discloses a small pressure release valve. The small pressure release valve comprises a valve body, a valve rod, a spring and a pre-compression force adjusting nut, the valve rod is arranged in the valve body, the valve rod is sleeved with the spring, the pre-compression force adjusting nut is connected to the rear end of the valve rod in a threaded mode, the two ends of the spring abut against the step face of the inner wall of the valve body and the pre-compression force adjusting nut respectively in a contact mode, an O-shaped sealing ring is fixed to the front end of the valve rod and makes contact with the inner wall of the valve body in an abutting mode to achieve sealing of the pressure release valve, during pressure release, the valve rod drives the O-shaped sealing ring on the valve rod and the pre-compression force adjusting nut to move leftwards, the O-shaped sealing ring is separated from the inner wall of the valve body, and an inner cavity of the valve body is opened to achieve pressure release operation. The small pressure release valve overcomes the defects of an existing pressure release valve, is simple in structure and convenient to mount and dismount, adopts double sealing, is good in sealing performance, adopts the pre-compression force adjusting nut to adjust the pressure release force, is flexible in pressure adjustment, and can be used independently or used in cooperation with other devices.

Description

technical field [0001] The invention relates to the technical field of pressure relief valves, in particular to a small pressure relief valve. Background technique [0002] The pressure relief valve is a device that automatically opens and closes according to the working pressure of the system. It is generally used to install equipment or pipelines in closed systems to protect the safety of the system. Under normal working conditions of the system, the relief valve is always closed. When the medium pressure in the system reaches the set pressure, the valve will automatically open depending on the pressure to discharge excess medium and reduce the excess pressure in the system to ensure the safety of the system. After the pressure relief valve is opened, the medium pressure in the system decreases, and when the medium pressure in the system drops to a certain level, the valve closes automatically. [0003] At present, the commonly used pressure relief devices mainly include...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/06F16K41/04
CPCF16K17/06F16K41/04
Inventor 崔普东苏太东方良周庆平张洁
Owner THE 40TH RES INST OF CHINA ELECTRONICS TECH GRP CORP
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