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Device for measuring elastic deformation limiting displacement and maximum static friction force of sealing ring

A technology of limit displacement and elastic deformation, which is applied in the direction of measuring devices, force/torque/work measuring instruments, instruments, etc., can solve the problems of research on mechanical properties without sealing rings, research on limit displacement of elastic deformation without sealing rings, etc.

Inactive Publication Date: 2015-06-24
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In the current literature, there is basically no research on the mechanical properties of the sealing ring under small displacement, let alone the research on the elastic deformation limit displacement of the sealing ring

Method used

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  • Device for measuring elastic deformation limiting displacement and maximum static friction force of sealing ring

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Embodiment Construction

[0014] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0015] As shown in the accompanying drawings, the present invention is a device for measuring the elastic deformation limit displacement and the maximum static friction force of the seal ring, which includes a bottom plate 2 installed on the workbench 1, a pillar 4 installed on one end of the bottom plate 2 through a positioning block 3, and installed on the The threaded sleeve 7 on the pillar 4, the leading screw 8 inserted into the threaded sleeve 7, the screw thread is installed on the nut 5 outside the threaded sleeve 7, the wear-resistant sleeve 6 arranged between the nut 5 and the threaded sleeve 7, the nut 5, The wear-resistant sleeve 6, the threaded sleeve 7, the lead screw 8 and the pillar 4 form a differential screw mechanism. When torque energy is applied to the nut 5, the differential screw mechanism can generate a slight reciprocating motion in the axial ...

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Abstract

The invention relates to the technical field of mechanical sealing, in particular to a device for measuring elastic deformation limiting displacement and maximum static friction force of a sealing ring. The device comprises a workbench, a bottom plate, a positioning block, a strut, a nut, an abrasion resisting sleeve, a threaded sleeve, a lead screw, a force sensor, a displacement sensor, a reflecting plate, a sliding block, a shaft, an end cover, a support, a supporting shaft, a first tested seal, a second tested seal and a positioning key. The quasi-static micro-amplitude reciprocating movement of the sealing ring is achieved through a differential screw mechanism, the force and displacement relation under multiple working conditions is measured through the force sensor and the displacement sensor, and the changing process of the conversion from the static friction to sliding friction of the sealing ring is studied. The kick phenomenon is adopted, and the limiting displacement and the maximum static friction caused by elastic deformation of the sealing ring are measured. According to the device, the vacancy related to the mechanical property experiment study of the sealing ring under the micro displacement is filled up, and auxiliary seal mechanical property experiment data and design references are provided for a mechanical sealing system.

Description

technical field [0001] The invention relates to the technical field of mechanical seals, in particular to a device for measuring the elastic deformation limit displacement and the maximum static friction force of a sealing ring. Background technique [0002] As a core component, mechanical seals are widely used in chemical, nuclear and other industrial fields. In its structure, the sealing ring called secondary seal installed at the compensating ring is a key component, and usually has several forms such as a separate O-ring, a spring-energy-storage composite sealing ring, and the like. When the mechanical seal is on, off, and the working conditions fluctuate, the compensation ring will have axial displacement, and its movement will first cause the elastic deformation of the sealing ring when it is transmitted to the auxiliary seal. When the displacement exceeds the maximum elastic deformation limit of the sealing ring, the compensation ring will It slides against the mount...

Claims

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Application Information

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IPC IPC(8): G01B21/02G01L5/00
CPCG01B21/02G01L5/00
Inventor 李坤贾晓红索双富王隆珂
Owner TSINGHUA UNIV
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