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Safety valve for reciprocation pump

A safety valve, reciprocating pump technology, applied in safety valves, valve details, balance valves, etc., can solve the problems of easily damaged sealing pairs, large impact force on the sealing surface of the valve disc, affecting the sealing performance of the valve, etc., to achieve wear resistance performance. and stable improvement of mechanical properties, enhanced corrosion resistance and wear performance, good adaptability

Inactive Publication Date: 2017-02-01
NINGBO QIANHU PETROLEUM EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing safety valve returns to the seat very quickly after opening, and the impact force of the disc sealing surface on the sealing surface of the valve seat is relatively large, which is easy to damage the sealing pair and affect the sealing performance of the valve

Method used

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  • Safety valve for reciprocation pump
  • Safety valve for reciprocation pump

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] In this embodiment, the mass percentage composition of the alloy applied to the valve body includes Mg: 2.9%, Cr: 1%, Cu: 0.8%, Si: 0.47%, Ti: 1%, Re: 0.5%, Ni: 0.1%, Os particles: 0.24%, additives 0.1-0.3%, the balance is aluminum.

Embodiment 2

[0044]In this embodiment, the mass percentage composition of the alloy applied to the valve body includes Mg: 2.8%, Cr: 1.1%, Cu: 0.6%, Si: 0.48%, Ti: 0.08%, Re: 0.6%, Ni: 0.15%, Os particles: 0.16%, additives 0.1-0.3%, the balance is aluminum.

Embodiment 3

[0046] In this embodiment, the mass percentage composition of the alloy applied to the valve body includes Mg: 2.7%, Cr: 1.2%, Cu: 0.5%, Si: 0.31%, Ti: 0.06%, Re: 0.7%, Ni: 0.22%, Os particles: 0.29%, additives 0.1-0.3%, the balance is aluminum.

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Abstract

The invention discloses a safety valve for a reciprocation pump. The safety valve comprises a valve body, a valve seat, a valve clack, a valve rod, a spring and a valve deck. A valve body inner cavity is formed in the valve body. The valve seat is in a cup shape and is installed in the valve body inner cavity. The upper end of the valve clack is pressed at the bottom of the valve seat and used for preventing liquid with normal liquid pressure being leaked outwards. The valve rod is used for pressing the valve clack or pushing a lower spring seat. The spring is connected with an upper spring seat and the lower spring seat. The valve deck is cylindrical. The top end of the valve deck is close to the top face of the upper spring seat. The safety valve is light and compact in structure and high in sensitivity, the installation position is unlimited, and the sensibility to vibration is low; and meanwhile, a buffer cavity is formed in the inner cavity of the safety valve, the sealing face of the valve clack and the sealing face of the valve seat are effectively protected, the sealing performance of the safety valve is reliable, and the service life of the product is long.

Description

technical field [0001] The invention relates to hydraulic system protection equipment, in particular to a safety valve for a reciprocating pump. Background technique [0002] The safety valve is used to protect the container on the pressure vessel. When the pressure reaches the set pressure, the safety valve will open the relief function. When the relief is less than the set pressure of the safety valve, the safety valve will return to the seat and reseal. The existing safety valve returns to the seat very quickly after opening, and the impact force of the disc sealing surface on the valve seat sealing surface is relatively large, which easily damages the sealing pair and affects the sealing performance of the valve. Contents of the invention [0003] The technical problem to be solved by the present invention is to propose a safety valve for a reciprocating pump in view of the above-mentioned deficiencies of the prior art. [0004] The present invention solves its techni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/06F16K17/164F16K47/02C22C38/18C22C38/16C22C38/02C22C38/14C22C38/08C22C49/11C22C101/10C22C101/02C22C101/08
CPCF16K17/0433C22C38/002C22C38/005C22C38/02C22C38/08C22C38/14C22C38/16C22C38/18C22C49/11C22C49/14F16K17/06F16K17/164F16K47/023
Inventor 忻达张伟康郑上军
Owner NINGBO QIANHU PETROLEUM EQUIP
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