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Experiment table for measuring mounting rigidity and damping of sealing ring

A seal ring and test bench technology, applied in the field of mechanical seals, can solve the problems of lack of secondary seal stiffness and damping parameters, etc.

Inactive Publication Date: 2015-05-20
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, an accurate and complete non-contact mechanical seal dynamic model only lacks the stiffness and damping parameters of the secondary seal

Method used

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  • Experiment table for measuring mounting rigidity and damping of sealing ring
  • Experiment table for measuring mounting rigidity and damping of sealing ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0019] refer to figure 1 , a stiffness and damping test bench for measuring the installation state of the sealing ring, including a base 12, a base plate 11 is connected to the base 12, the lower end of the pillar 9 is connected to the base plate 11, and the excitation table 10 is supported by a spring support ring 7, The pillar mounting plate 8 is connected to the upper end of the pillar 9, the positioning ring 6 is rigidly connected to the output end of the excitation table 10, the support ring 3 is fixed on the positioning ring 6, and the inner groove of the support ring 3 is installed with the tested sealing ring 4, the quality The ring 5 is flexibly installed on the tested sealing ring 4 and forms a clearance fit with the support ring 3 , the support ring 3 is connected with the sensor mounting plate 1 , and the sensor reflector 2 is connected with the quality r...

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Abstract

The invention discloses an experimental table for measuring mounting rigidity and damping of a sealing ring. The experiment table comprises a base, wherein a bottom plate is connected to the base; a supporting column is connected to the bottom plate; an actuating vibration table is connected with the supporting column; a positioning circular ring is rigidly connected with the actuating vibration table; a supporting ring is fixed on the positioning circular ring; a measured sealing ring is mounted in a groove inside the supporting ring; a quality loop is flexibly mounted on the measured sealing ring and forms clearance fit with the supporting ring; the supporting ring is connected with a sensor mounting plate; a function generator is connected with the actuating vibration table through a power amplifier; a high-pressure fluid sub system is connected with the supporting ring; two laser displacement sensors mounted on the sensor mounting plate are connected with a computer through a controller; by resolving a forced vibration model equation caused by supporting excitation of the quality loop and the supporting ring, the rigidity and damping parameters of the measured sealing ring are obtained. The experiment table can be used for researching the rigidity and the damping parameters after the sealing rings which are of different diameters and made from different materials are mounted under different pre-compression amount.

Description

technical field [0001] The invention relates to the technical field of mechanical seals, in particular to an experiment bench for measuring the installation stiffness and damping of sealing rings. Background technique [0002] Under the working conditions of high temperature, high pressure and high speed, the non-contact mechanical seal (or called non-contact end face seal) can realize the separation of the seal ring through the effect of hydrostatic pressure or dynamic pressure, and form a fluid gap between the two sealing end faces, thereby Provide a long-term stable working condition for the seal. Therefore, it is widely used in petrochemical, energy, aerospace and other fields. In a typical structure of a non-contact mechanical seal, the compensating ring assembly is flexibly mounted on the sealing ring, which is a key component and is called a secondary seal. If the auxiliary seal is damaged, the entire sealing system will fail; if the pre-compression of the auxiliary...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/02
Inventor 贾晓红李坤廖传军索双富王隆珂
Owner TSINGHUA UNIV
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