Constant-difference pressure compensation valve

A technology of pressure compensation and fixed difference, which is applied to valve details, safety valves, balance valves, etc., can solve problems such as large pressure difference fluctuations, and achieve the effect of reducing the range of pressure difference fluctuations

Pending Publication Date: 2020-02-21
南通市中龙液压有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] In the fluid pressure transmission system, it is required to achieve different fixed pressures between the two chambers, and to realize automatic adjustment according to the pressure fluctuations of the two chambers, and to maintain a constant pressure difference. Traditionally, two relief valves are used to set different pressures. The disadvantage is that the pressure difference fluctuates greatly

Method used

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Embodiment Construction

[0014] like figure 1 , 2 As shown, a constant differential pressure compensation valve includes an upper cylinder body 1, a lower cylinder body 2, a differential pressure generator 3, a gasket I5, an O-ring 12, and a countersunk screw 13. The upper cylinder 1 and the lower cylinder 2 are fixedly connected by countersunk screws 13, the O-ring 12 is installed on the lower cylinder 2, the differential pressure generator 3 is installed on the screw 10 inside the upper and lower cylinders, and the gasket I5 is installed On upper cylinder 1.

[0015] Upper cylinder body 1 upper end exterior is screw thread, has 3 waist grooves 14 on its cylinder body, and the inside is a hollow structure, and an aperture is arranged as guide hole 16 above, and the following is a step hole, and the lower end and the inside are connected by flanges.

[0016] The upper end of the lower cylinder body 2 is connected by a flange, and there are six holes on the cylinder body. The inside is a hollow struc...

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Abstract

The invention discloses a constant-difference pressure compensation valve. The constant-difference pressure compensation valve comprises an upper cylinder body, a lower cylinder body, differential pressure generators, a sealing pad I, an O-shaped ring and a countersunk screw; the upper cylinder body is fixedly connected with the lower cylinder body, the sealing pad I is arranged on the upper cylinder body, and the O-shaped ring is arranged on the lower cylinder body; the differential pressure generators are arranged on screw rods inside the upper cylinder body and the lower cylinder body; andguide holes are formed in valve seats of the upper cylinder body, the lower cylinder body and the differential pressure generators, wherein the guide holes are used for fixing the screw rods and ensuring that the valve seats move up and down on the screw rods. According to the constant-difference pressure compensation valve, the pressure difference fluctuation range can be reduced, and functions of automatic pressure compensation, differential pressure maintenance and manual emergency pressure relief can be achieved.

Description

technical field [0001] The invention relates to a constant differential pressure compensation valve used in a fluid pressure transmission system. Background technique [0002] In the fluid pressure transmission system, it is required to achieve different fixed pressures between the two chambers, and to realize automatic adjustment according to the pressure fluctuations of the two chambers, and to maintain a constant pressure difference. Traditionally, two overflow valves are used to set different pressures. The disadvantage is that the pressure difference fluctuates greatly. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a constant differential pressure compensation valve, which includes an upper cylinder body, a lower cylinder body, a differential pressure generator, a gasket I, an O-ring, and countersunk screws; an upper cylinder body and a lower cylinder body Fixed connection, sealing gasket I on the up...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/22F16K31/14
CPCF16K17/22F16K31/14
Inventor 陈龙威
Owner 南通市中龙液压有限公司
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