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Three-sleeve elastic self-sealing safety valve

A self-sealing, safety valve technology, used in safety valves, balance valves, valve devices, etc., can solve the problems of unstable valve performance, inability to meet standard requirements, and user feedback, etc. The action repeatability is stable and reliable, and the effect of improving the adjustment sensitivity

Active Publication Date: 2014-11-12
KAIFENG RUIFA HIGH & MIDDLE PRESSURE VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the working temperature of the medium is higher than 300°C, the action performance of the valve is very unstable and cannot meet the standard requirements; and the seal is also easy to leak, and users have relatively large opinions

Method used

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  • Three-sleeve elastic self-sealing safety valve
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  • Three-sleeve elastic self-sealing safety valve

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Experimental program
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Embodiment Construction

[0021] like figure 1 , figure 2 , image 3 and Figure 4 As shown, three sets of elastic self-sealing safety valves of the present invention include a valve cover 1, a valve body 2, a valve seat 3, a valve disc 4, a guide cylinder 5, a sleeve 6, a lower cooling fin 7, an upper cooling fin 31 and a valve Rod 8, described bonnet 1 is provided with upper spring seat 9, lower spring seat 10 and the spring 11 that two ends are respectively inserted into upper spring seat 9, lower spring seat 10, described upper spring seat 9, spring 11, The lower spring seat 10 is threaded on the outside of the valve stem 8 in sequence, the valve cover 1, the upper cooling fin 31, the lower cooling fin 7, and the valve body 2 are fixedly connected by bolts in turn, and the valve seat 3 is placed in the valve body 2 and located on the valve body. At the lower end of the body 2, the guide cylinder 5 is fixed at the junction of the lower cooling fin 7 and the valve body 2, the guide cylinder 5 is ...

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Abstract

The invention discloses a three-sleeve elastic self-sealing safety valve. The three-sleeve elastic self-sealing safety valve comprises a bonnet, a valve body, a valve seat, a valve flap, a guiding cylinder, a sleeve, a lower cooling fin, an upper cooling fin and a valve rod; an anti-blowing sleeve positioned above the lower cooling fin is arranged on the valve rod; an annular groove is arranged on the lower end surface of the anti-blowing sleeve; a retainer ring capable of extending into the groove in a matched manner is arranged on the upper surface of the lower cooling fin; a sealing cylinder capable of extending into the inner ring of the lower cooling fin is arranged on the inner side of the lower end surface of the anti-blowing sleeve; a limit sleeve positioned under the lower cooling fin and a lock sleeve matched with the upper surface of the valve flap in a compression joint manner are arranged on the valve rod; a conical block which has a small lower part and a large upper part is arranged in the center of the lower surface of the valve flap; an annular pressure bearing slot is formed in the lower surface of the valve flap; an elastic sealing ring positioned on the outer side of the pressure bearing slot is arranged on the lower surface of the valve flap. The three-sleeve elastic self-sealing safety valve has the advantages that the design is reasonable, the sealing performance is high, the lifting guiding and vertical stability are high, the adjustment sensitivity is high, the performance and stability of opening, setting and return actions of the valve are good, and the valve is particularly applicable to harsh working conditions such as high temperature and high pressure conditions.

Description

technical field [0001] The invention belongs to the technical field of valves, in particular to a three-set elastic self-sealing safety valve. Background technique [0002] The safety valve is a valve for safety protection. Its opening and closing parts are in a normally closed state under the action of external force. When the medium pressure in the equipment or pipeline rises and exceeds the specified value, it will automatically open. The medium pressure in the pipeline or equipment exceeds the specified value. Safety valves are automatic valves, mainly used in gas, liquid and heat pipe network systems, as steam boilers, pressure vessels, pipelines, control medium pressure does not exceed the specified value, and play an important role in protecting personal safety and equipment operation. [0003] The existing spring full-lift safety valve with cooling fins used in thermal systems, steam boilers, pressure steam containers, and pipelines has a simple structure, the valve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/164
CPCF16K17/164
Inventor 王德立李红超王瑞卿
Owner KAIFENG RUIFA HIGH & MIDDLE PRESSURE VALVE
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