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A hydraulic cylinder piston sealing device under high temperature conditions

A technology for high-temperature working conditions and sealing devices, which is applied in the direction of engine sealing, fluid pressure actuating devices, engine components, etc., can solve problems such as expansion deformation, sealing failure of cylinders, etc., to inhibit piston expansion, prevent cylinders from being stuck, and withstand Excellent high temperature performance

Inactive Publication Date: 2017-06-23
UNIV OF JINAN
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  • Summary
  • 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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  • A hydraulic cylinder piston sealing device under high temperature conditions
  • A hydraulic cylinder piston sealing device under high temperature conditions

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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 A 4, a sealing ring B 5, an elastic ring 6 and a piston rod 10, and the piston rod 10 The head end is provided with a shaft shoulder and an external thread, and is installed in sequence from the inside to the outside with a circlip 9, a piston 8, an elastic washer 3 and a lock nut 1, a constant fan steel sheet 7, an elastic ring 6, and a sealing ring A 4 And the seal ring B 5 is installed in the groove of the piston 8 in sequence.

[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 vane steel shee...

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Abstract

The invention provides a piston sealing device for a hydraulic cylinder under high temperature conditions, which mainly includes a piston, a constant range steel sheet, a sealing ring A, a sealing ring B, an elastic ring and a piston rod, a constant range steel sheet, an elastic ring, and a sealing ring A and sealing ring B are installed in the piston groove in sequence. It is characterized in that the constant range steel sheet in the piston groove restrains its expansion, and the sealing ring made of fluororubber material realizes high temperature resistant sealing. The invention prevents the piston from expanding and sticking to the cylinder by embedding a constant range steel sheet in the groove of the piston; by installing the sealing ring A and the sealing ring B made of fluororubber material side by side on the elastic ring, high temperature sealing is realized; the aluminum alloy piston is used to dissipate heat 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 Patents(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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