Trapezoidal rubber sealing ring pressing device of double-flange expansion joint

By introducing a combination of a fixed column, a circular sealing ring, a sealing strip, a pressure block, and an elastic element into the double-flange expansion joint, the reaction force of the elastic element is used to push the pressure block to uniformly transmit force, thus solving the problem of insufficient sealing ring clamping force caused by loose bolts, thereby improving sealing performance and ensuring stable system operation.

CN224352587UActive Publication Date: 2026-06-12GONGYI XINYUE WATER SUPPLY MATERIALS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GONGYI XINYUE WATER SUPPLY MATERIALS CO LTD
Filing Date
2025-08-21
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

When the pipeline system is subjected to vibration, temperature changes, or medium pressure fluctuations, the bolts between the flange body and the pressure flange of the existing double flange expansion joint are prone to loosening, resulting in insufficient clamping force of the trapezoidal rubber sealing ring, reduced sealing performance, and even leakage.

Method used

A trapezoidal rubber sealing ring clamping device for a double-flange expansion joint was designed, comprising a fixed column, a circular sealing ring, a sealing strip, a pressure block, an elastic element, and a limiting groove. The elastic reaction force of the elastic element pushes the pressure block to uniformly transmit force, ensuring that the pressure ring further clamps the trapezoidal sealing ring, enhancing the contact pressure of the sealing surface, and compensating for sealing failure caused by loose bolts.

Benefits of technology

It effectively prevents media leakage, improves the sealing reliability and stability of the joint, extends its service life, and ensures the safe and efficient operation of the pipeline system.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224352587U_ABST
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Abstract

The utility model relates to related technical field of double flange telescopic joint especially, it relates to double flan telescopic joint's trapezoidal rubber seal ring pressure device, including flange body, the surface one side of flange body is provided with pressure mechanism. This double flan telescopic joint's trapezoidal rubber seal ring pressure device, through the setting of pressure mechanism, double flan telescopic joint assembly is completed, and the sealing strip on the surface of the pressure ring is continuously pressed in one end of flange body, and cooperates the circular sealing ring in its inboard to realize the sealing between flange body and pressure ring, when the pipeline vibration causes the first nut loosening, the elastic force of the elastic member compressed in the limiting groove, pushes the pressure block of annular equidistance distribution, makes the pressure block even transmission to the pressure ring, and then lets the pressure ring further press the trapezoidal sealing ring, enhances the sealing surface contact pressure, effectively makes up the sealing failure problem between flange body and pressure land due to the first nut loosening, guarantees the joint tightness and the stable operation of pipeline system.
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