A fan-shaped segment hydrostatic test sealing tool

By adopting a combination structure of sealing disc, sealing column and sealing ring in the sealing fixture of the sector section water pressure test, the problems of unsatisfactory sealing effect and severe wear were solved, and higher sealing performance and service life were achieved.

CN224339476UActive Publication Date: 2026-06-09CHANGZHOU MINGJIE HEAVY IND TECH CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHANGZHOU MINGJIE HEAVY IND TECH CO LTD
Filing Date
2025-06-23
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

In the existing technology, the outlet of the fan-shaped section is fixed by a sealing plate and bolts, which has an unsatisfactory sealing effect. Furthermore, repeated installation and disassembly lead to severe wear and a short service life.

Method used

It adopts a combination structure of sealing plate, sealing column, first sealing ring and second sealing ring. The sealing plate and sealing column are made of martensitic stainless steel and coated with chromium nitride layer. The sealing ring is made of hydrogenated nitrile rubber. The bolt end is provided with polyimide sleeve to enhance sealing and wear resistance.

Benefits of technology

It improves the sealing performance and stability of the sealing plate and the outlet, extends the service life, ensures the accuracy of water pressure test results, and reduces wear and corrosion.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224339476U_ABST
    Figure CN224339476U_ABST
Patent Text Reader

Abstract

A sealing fixture for a sector-shaped section hydrostatic test, belonging to the field of sealing fixture technology, is used for offline pressure testing of the water-cooling system of the sector-shaped section of a continuous casting machine. Addressing the technical shortcomings of traditional sealing plate bolt fixing methods, such as rapid seal failure and severe wear from repeated disassembly and assembly, this solution proposes a double-sealing-ring reinforced structure: a first sealing ring embedded in the outer wall of the sealing column and a second sealing ring on the end face of the sealing plate form a double seal. The first sealing ring is axially positioned with the sealing column's mating groove via an inner protrusion, while the second sealing ring is circumferentially fixed to the sealing plate slot via a side protrusion, and elastic sealing compensation is achieved with hydrogenated nitrile rubber material. A polyimide wear-resistant sleeve is built into the through hole of the second sealing ring to effectively prevent borehole expansion caused by repeated bolt installation and removal. This device significantly improves the sealing reliability and service life of the fixture in hydrostatic testing.
Need to check novelty before this filing date? Find Prior Art