A piston type accumulator with built-in check valve

A technology of one-way valve and accumulator, which is applied in the direction of actuator accumulator, fluid pressure actuating device, mechanical equipment, etc., which can solve the problems of piston accumulator air chamber leakage, etc., to improve reliability and Stability, long service life, and the effect of improving the sealing effect

Active Publication Date: 2022-03-11
YANSHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved in the present invention is to provide a piston-type accumulator with a built-in check valve, which has a simple structure and a long service life, improves the reliability and stability of the piston-type accumulator, and realizes reliable oil static sealing. Improve the sealing effect of the air chamber of the piston accumulator during work, and solve the problem of internal air pressure leakage in the air chamber of the piston accumulator

Method used

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  • A piston type accumulator with built-in check valve
  • A piston type accumulator with built-in check valve
  • A piston type accumulator with built-in check valve

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Embodiment Construction

[0023] Below in conjunction with embodiment the present invention is described in further detail:

[0024] In order to make the technical solutions and advantages of the present invention clearer, the exemplary embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Apparently, the described embodiments are only a part of the embodiments of the present invention, and are not exhaustive of all the embodiments. And in the case of no conflict, the embodiments and the features in the embodiments of the present invention can be combined with each other.

[0025] In addition, in the description of the present invention, it should be noted that the terms "first", "second" and so on are only used for descriptive purposes, and should not be understood as indicating or implying relative importance.

[0026] Such as figure 1 , figure 2 and image 3 As shown, a piston accumulator with a built-in check valve include...

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Abstract

The invention discloses a piston-type accumulator with a built-in check valve, relates to the technical field of hydraulic auxiliary components, and comprises a cylindrical cylinder body, an oil-side end cover, an air-side end cover, and a piston. The oil-side end cover There is an oil inlet / outlet hole at the axis of the piston, and a plug-in check valve connected to the oil inlet / outlet hole and the oil side end surface of the oil side end cover is arranged in the oil side end cover. The oil side end surface of the piston is provided with a The ring is coaxial with the center of the oil side end face of the piston, and the position of the outlet of the plug-in check valve connected with the surface of the oil side end cover corresponds to the position of the ring square groove. The oil side end cover of the oil side Two rings of dovetail grooves are arranged on the side end surface, the fourth sealing ring and the fifth sealing ring are arranged in the two dovetail grooves, and the annular square groove is located between the fourth sealing ring and the fifth sealing ring. The invention has simple structure and long service life, improves the reliability and stability of the piston accumulator, and improves the sealing effect of the air chamber of the piston accumulator in operation.

Description

technical field [0001] The invention relates to the technical field of hydraulic auxiliary components, in particular to a piston type accumulator with a built-in check valve, which is used for storing and releasing hydraulic oil in a hydraulic system. Background technique [0002] As a commonly used gas-liquid isolation hydraulic energy storage device, the piston accumulator has the following functions in the hydraulic system: as an auxiliary energy source, to compensate leakage, to maintain constant pressure, as an emergency power source, in Storage and recovery of energy in the energy-saving circuit, etc. Its working principle is: the piston accumulator includes a cylinder body, an oil side end cover, an air side end cover, a piston, an air charging valve and a sealing ring, etc., wherein the piston separates the cylinder body into two chambers, an air chamber and an oil chamber. The end face of the piston contacting the air chamber is the gas side end face of the piston,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B1/24
CPCF15B1/24F15B2201/312F15B2201/4056F15B2201/411F15B2201/4155
Inventor 张祝新李伟建赵丁选夏佳琪孙志国
Owner YANSHAN UNIV
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