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Self-adaptive compensation type mechanical sealing device

A mechanical seal device, self-adaptive compensation technology, applied in the direction of engine seals, mechanical equipment, engine components, etc., can solve the problems of restricting the reliability and life of mechanical seals, permanent deformation, limited automatic compensation range, etc., to eliminate radial The effect of force component force, prolonging service life and automatic compensation interval increase

Pending Publication Date: 2022-02-25
BEIJING HANGKE ENGINE CONTROL SYST SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The actual engineering results show that the defect of the wave spring is permanent deformation after overcompression during use, and its automatic compensation range is limited, which restricts the reliability and life of the mechanical seal. In order to solve this problem, this patent proposes an automatic adjustment compensation type integrated mechanical seal

Method used

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Examples

Experimental program
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Embodiment 1

[0023] Embodiment 1 provides an adaptive compensation type mechanical seal device, including a graphite ring 1, a spring seat 2, a spring 3, a sealing ring 5, a spherical spacer 6 and a housing 7;

[0024] The spring seat 2, the spring 3, the seal ring 5 and the spherical spacer 6 are all located in the housing;

[0025] The housing is provided with a hollow guide column, and the graphite ring 1, the spring seat 2 and the spherical pad 6 are all set on the hollow guide column, and the end surface of the spring seat 2 is provided with a spherical arc surface ring groove; the spring seat There is a gap between the hollow guide post;

[0026] The spring is arranged between the spring seat and the housing, and provides elastic thrust;

[0027] The lower end surface of the spherical pad is a spherical arc torus, and the spherical arc torus is matched with the profile of the spherical arc surface ring groove, and the space between the spherical arc torus and the spherical arc surfa...

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Abstract

The invention relates to a self-adaptive compensation type mechanical sealing device. The device comprises a graphite ring, a spring seat, a spring, a sealing ring, a spherical cushion block and a shell; the spring seat, the spring, the sealing ring and the spherical cushion block are all positioned in the shell; the spring acts on the graphite ring through the spring seat and the spherical cushion block in a conducting mode by means of the elastic force of the spring, so that the graphite sealing face of the graphite ring is tightly attached to the sealing face of a shafting part, and therefore the sealing effect is achieved. The cushion block is used for guaranteeing that force transmitted to the graphite ring by the spring is axially output, end face inclination of the graphite ring caused by non-uniform stress (especially radial force and non-axial deflection force) of the graphite ring is eliminated, and a sealing face matching effect is improved.

Description

technical field [0001] The invention relates to the technical field of aero-engine fuel seal design, in particular to an adaptive compensation type mechanical seal device. Background technique [0002] The dynamic seal structure is an important part in the fuel control system of an aero-engine, among which the rotary dynamic seal is an important branch of the fluid dynamic seal, and the mechanical seal is one of the important components of the dynamic seal, which is characterized by a wide working pressure range and high linear speed , The friction coefficient is small, and the friction characteristics of the end face of the mechanical seal are the key factors that determine the working life and sealing performance of the mechanical seal. The traditional sealing structure is usually mainly composed of wave springs, graphite rings, and packaging components. The rebound effect ensures full contact between the graphite ring and the rotating parts, so as to achieve the sealing e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/34F16J15/38
CPCF16J15/3452F16J15/3464F16J15/38
Inventor 王小春王琦桢黄蕾李嘉璇翟叔阳
Owner BEIJING HANGKE ENGINE CONTROL SYST SCI & TECH
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