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Hydraulic cylinder piston sealing device under high temperature situation

A high-temperature working condition, sealing device technology, applied in the direction of engine sealing, fluid pressure actuation device, engine components, etc., can solve the problems of stuck cylinder seal failure, expansion deformation, etc., to suppress piston expansion, prevent cylinder stuck, resist Excellent high temperature effect

Inactive Publication Date: 2015-12-23
UNIV OF JINAN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the existing problems of some hydraulic cylinder pistons prone to expansion deformation, cylinder sticking and sealing failure under high temperature working conditions, and provides a hydraulic cylinder piston sealing device under high temperature working conditions which can effectively solve the above problems

Method used

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  • Hydraulic cylinder piston sealing device under high temperature situation
  • Hydraulic cylinder piston sealing device under high temperature situation

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Embodiment

[0015] Such as figure 1 As shown, a hydraulic cylinder piston sealing device under a high temperature working condition of the present invention mainly includes a piston 8, a constant range steel plate 7, a sealing ring A4, a sealing ring B5, an elastic ring 6 and a piston rod 10, and the piston rod 10 ends The end is provided with a shaft shoulder and an external thread, and the elastic retaining ring 9, the piston 8, the elastic washer 3 and the lock nut 1, the constant fan steel sheet 7, the elastic ring 6, the sealing ring A4 and the sealing ring are installed in sequence from the inside to the outside B5 is installed in the groove of piston 8 successively.

[0016] The piston 8 is made of aluminum alloy, which enables the piston 8 to dissipate heat in time under high-temperature operation due to the advantages of good thermal conductivity of the aluminum alloy. There are 3 grooves on the outer surface of the piston 8 .

[0017] combine figure 2 As shown, the constant ...

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Abstract

The invention provides a hydraulic cylinder piston sealing device under the high temperature situation. The hydraulic cylinder piston sealing device mainly comprises a piston, an Invar steel disc, a sealing ring A, a sealing ring B, an elastic ring and a piston rod, wherein the Invar steel disc, the elastic ring, the sealing ring A and the sealing ring B are installed in a groove of the piston in sequence. The hydraulic cylinder piston sealing device is characterized in that the Invar steel disc in the groove of the piston restrains the piston from expanding, and the sealing rings made of fluororubber achieve high-temperature resisting sealing. The piston is prevented from expanding and blocking a cylinder by embedding the Invar steel disc in the groove of the piston; the high-temperature sealing is achieved by installing the sealing ring A and the sealing ring B made of the fluororubber on the elastic ring side by side; and the piston made of aluminum alloy is used for cooling in time.

Description

technical field [0001] The invention relates to a hydraulic cylinder piston sealing device under high temperature conditions, in particular to a sealing device which prevents the piston from expanding and sticking to the cylinder by embedding a constant range steel sheet in the groove of the piston; Ring A and sealing ring B realize high-temperature sealing; timely heat dissipation through aluminum alloy pistons belongs to the technical research and development field of high-temperature-resistant sealing of hydraulic cylinder pistons. Background technique [0002] Hydraulic cylinders use the linear reciprocating motion of the piston to convert hydraulic energy into mechanical energy. However, under high temperature conditions, some hydraulic cylinders are prone to thermal expansion deformation of the piston, cylinder sticking, and even internal leakage caused by piston seal failure, thereby reducing the performance of the hydraulic cylinder. [0003] Therefore, in view of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/20F16J15/18
Inventor 安延涛赵东杨可森杨玉娥刘鲁宁
Owner UNIV OF JINAN
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