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A Pilot Safety Valve with Isolation Air Chamber

A pilot-operated safety valve and isolation gas technology, applied in safety valves, valve devices, balance valves, etc., can solve the problems of shortening the service life of safety valves, and achieve the effect of prolonging the service life, ensuring sealing and reliable opening.

Active Publication Date: 2022-03-18
LUOFU VALVE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention overcomes the disadvantages that the pilot valve pipeline is easily corroded and blocked when the pilot safety valve is used, affects the sealing performance of the pilot valve and the main valve chamber, and shortens the service life of the safety valve, and provides a safety valve with an isolated air chamber. The pilot-operated safety valve introduces a stable clean air source into the pilot valve and the main valve chamber, which will not cause corrosion or blockage to the pilot valve pipeline, ensures the sealing of the pilot valve and the main valve chamber, and is conducive to extending the life of the safety valve. service life

Method used

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  • A Pilot Safety Valve with Isolation Air Chamber
  • A Pilot Safety Valve with Isolation Air Chamber
  • A Pilot Safety Valve with Isolation Air Chamber

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Embodiment 1: A pilot-operated safety valve with an isolated air chamber (see attached figure 1 to attach image 3 ), including main valve 1, pilot valve 2, main valve inlet 3, main valve outlet 4, main valve chamber 5, guide sleeve 6, valve seat 7, main valve The valve chamber is set in the guide sleeve, and the valve disc 8 is suitable for installation in the guide sleeve. The outer wall of the valve disc is provided with an annular groove 9. The valve seat is installed at the entrance of the main valve. The spring abuts on the valve disc, and the valve disc abuts on the valve seat.

[0026]The pilot valve includes a pilot valve body 11 and a pilot valve cover 12. The pilot valve body is provided with a medium cavity 13 and an isolation air chamber. A spool 14 is installed between the medium cavity and the isolation air chamber. The upper end of the spool is connected to a piston 15, and the piston and the pilot The spring assembly is connected between the valve cov...

Embodiment 2

[0033] Embodiment 2: A pilot-operated safety valve with an isolated air chamber (see attached Figure 4 , attached Figure 5 ), its structure is similar to that of Embodiment 1, the main difference is that in this embodiment, the limit boss is equipped with a rotatable partition 54, and several upper through holes 55 are evenly distributed on the partition, and the limit boss and the upper The through holes are provided with a plurality of lower through holes 56 one by one, the outer wall of the partition is sealed and connected with the inner wall of the installation hole, and the guide plate 57 extending upward is arranged on the partition, two guide plates are evenly distributed, the guide plate is arc-shaped, and there are The guide groove 58 is inclined, and the installation hole and the guide groove are correspondingly provided with a guide post 59, and the guide post is inserted in the guide groove; the partition moves upward together with the valve core, and the guide ...

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Abstract

The invention discloses a pilot-operated safety valve with an isolated air chamber, which aims to solve the problem that the pilot valve pipeline is easily corroded and blocked when the pilot-operated safety valve is used, which affects the sealing performance of the pilot valve and the main valve chamber and shortens the safety valve. Insufficient service life. The invention includes a main valve, a pilot valve, a main valve inlet and a main valve outlet on the main valve, a main valve chamber inside the main valve, a pilot valve body, a pilot valve cover, and a medium inside the pilot valve body. chamber, isolated air chamber, a spool is installed between the medium chamber and the isolated air chamber, the upper end of the spool is connected to the piston, the spring assembly is connected between the piston and the pilot valve cover, the piston is fitted in the medium chamber, the medium chamber and the inlet of the main valve The inlet pressure pipe is connected between them, the air inlet nozzle is connected to the pilot valve body, and the follow-up valve assembly driven by the spool is installed in the isolation air chamber. The follow-up valve assembly divides the isolation air chamber into an intake chamber, an exhaust chamber, and an intake chamber. A pressure pipe is connected with the main valve chamber, and a pressure discharge pipe is connected between the exhaust chamber and the outlet of the main valve.

Description

technical field [0001] The present invention relates to a safety valve, more specifically, it relates to a pilot type safety valve with an isolated air chamber. Background technique [0002] At present, as a high-end overpressure protection device, the pilot-operated safety valve is widely used in occasions with high working conditions due to its superior performance. Some of the working conditions contain polymers, sediments or extremely dirty media. Such media directly enter the pilot valve and the main valve chamber, which will easily cause corrosion and blockage of the pilot valve pipeline, and affect the sealing of the pilot valve and the main valve chamber. Sexuality, shorten the service life of the safety valve. Contents of the invention [0003] The invention overcomes the disadvantages that the pilot valve pipeline is easily corroded and blocked when the pilot safety valve is used, affects the sealing performance of the pilot valve and the main valve chamber, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K17/10F16K17/164
CPCF16K17/048F16K17/10F16K17/164
Inventor 张雷雷周志有冯俊旭周海潜蒋建国林建明郭新帆郭新策谷成利王遵慧胡东卿魏乃岳吴琦
Owner LUOFU VALVE GROUP