A device for testing pressure distribution in a fixed-gap cylindrical seal.

By designing a test device with a split bushing assembly and sensor mounting, the problem of inaccurate pressure distribution testing within the sealing gap in existing technologies has been solved. This enables precise measurement and all-round distribution testing of pressure within the sealing gap, improving test accuracy and efficiency.

CN119688282BActive Publication Date: 2026-05-26ZHEJIANG UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG UNIV OF TECH
Filing Date
2024-12-20
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing fixed stator cylindrical sealing test platforms are unable to accurately test the omnidirectional pressure distribution within the sealing gap, which restricts the research and improvement of sealing structures.

Method used

A testing device was designed, comprising a sealing stator assembly, a split bushing assembly, a bushing drive assembly, and a mounting base assembly. Through the split structure of the bushing and the clamping assembly, combined with the installation of sensors, the device enables accurate measurement and omnidirectional distribution testing of the pressure within the sealing gap.

Benefits of technology

It enables precise measurement and omnidirectional distribution testing of pressure within the cylindrical sealing gap, improving the accuracy and efficiency of the test.

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Abstract

A pressure distribution testing device for a fixed-gap cylindrical seal belongs to the field of cylindrical seal testing technology. It includes a sealing stator assembly, a segmented bushing assembly, a bushing drive assembly, and a mounting base assembly. Both the segmented bushing assembly and the bushing drive assembly are mounted on the mounting base assembly. The segmented bushing assembly includes a split bushing and a bushing clamping assembly for clamping the bushing. The bushing is rotatably mounted on the mounting base assembly. The sealing stator assembly is sleeved on the bushing, with a sealing gap between them. The bushing's axial movement and rotation are controlled by the bushing drive assembly. The testing device also includes sensors for measuring the pressure at the inlet and outlet of the sealing gap and the internal pressure. This invention, based on a simple and easy-to-install / disassemble structural design, enables accurate testing of the omnidirectional pressure distribution of a fixed-gap cylindrical seal.
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