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A spring piston type accumulator with one-way valve

A spring piston and one-way valve technology, applied in the field of hydraulic engineering, can solve the problems of insensitive dynamic response, large piston inertia, etc., to prevent oil leakage, improve service life and wear resistance, and improve stability.

Active Publication Date: 2020-01-10
JINCHENG NANJING ELECTROMECHANICAL HYDRAULIC PRESSURE ENG RES CENT AVIATION IND OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Piston type pressure accumulator, one cavity is the internal oil return of the product, the other cavity is the spring and external oil return, the opening pressure is controlled by the external low pressure maintenance valve, the structure is simple, but the piston inertia is large, and the dynamic response is not sensitive

Method used

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  • A spring piston type accumulator with one-way valve

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Embodiment Construction

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] The structure of spring-piston pressure accumulator with one-way valve is as follows: figure 1 shown. Including small piston 1, composite seal 2, spring seat 3, small piston spring 4, support ring 5, ejector rod 6, screw cap 7, screw cap sealing ring 8, screw cap protection ring 9, and one-way valve assembly; among them, The one-way valve assembly includes a valve seat sealing ring 10, a valve seat protection ring 11, a one-way valve housing 12, a one-way valve spring 13, a valve core 14, a valve seat 15, and the one-way valve spring 13 is sleeved on the valve core 14, The one-way valve spring 13 and the valve core 14 are put into the one-way valve casing 12, and the one-way valve casing 12 is put into the valve seat 15 at the left end of the pressure accumulator, and the small piston 1 and the valve seat 15 pass through the valve The seat sealing ri...

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Abstract

The invention relates to a spring piston type pressure accumulator with a one-way valve. The spring piston type pressure accumulator comprises a small piston (1), composite sealing pieces (2), a spring seat (3), a small piston spring (4), a supporting ring (5), an ejecting rod (6), a screw cap (7), a screw cap sealing ring (8), a screw cap protecting ring (9) and a one-way valve assembly. The spring piston type pressure accumulator with the one-way valve integrates the zero-leakage one-way valve to maintain pressure and integrates a function of volume adjustment at the same time, through the selection of different sealing pieces, the reliable connection is achieved, and the service life of the pressure accumulator and the pressure-maintaining characteristics during use are guaranteed.

Description

technical field [0001] The invention belongs to the field of hydraulic engineering, in particular to a spring-piston pressure accumulator structure with a check valve. Background technique [0002] The form of pressure accumulator is roughly divided into piston type and gas compression type. [0003] Piston type pressure accumulator, one cavity is the internal oil return of the product, and the other cavity is the spring and external oil return. The opening pressure is controlled by the external low pressure maintenance valve. The structure is simple, but the piston inertia is large and the dynamic response is not sensitive. [0004] For gas compression accumulators, it is common to put a rubber bag filled with gas into a high-temperature resistant steel container. The rubber bag has a small inertia, and the maintenance fluid is simple and compact, and is suitable for large capacity. [0005] In the design process of hydraulic accumulators, a low pressure, smaller volume, m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B1/04
CPCF15B1/04F15B2201/21F15B2201/31F15B2201/411
Inventor 王潮敏王正李明飞胡嘉琨
Owner JINCHENG NANJING ELECTROMECHANICAL HYDRAULIC PRESSURE ENG RES CENT AVIATION IND OF CHINA