Coal mine gas pipeline sealing butt joint device and use method thereof

The coal mine gas pipeline sealing and docking device utilizes a fixed locking ring, a toothed structure, and a drive structure to achieve rapid docking and initial sealing, enhancing sealing performance and solving the problems of poor sealing and stability in existing technologies. This prevents gas leakage and provides reliable gas transportation assurance.

CN122170288APending Publication Date: 2026-06-09JINCHENG MINGSHI COAL LAYER USING
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JINCHENG MINGSHI COAL LAYER USING
Filing Date
2026-04-28
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing coal mine gas pipeline connection methods have poor sealing and stability, are cumbersome to operate, difficult to disassemble, and are prone to gas leakage when dealing with pressure changes and vibrations, posing safety hazards.

Method used

A sealing and docking device for coal mine gas pipelines is adopted, which utilizes a fixed locking ring, a toothed structure, a rubber sealing ring, and a driving structure to achieve rapid docking and initial sealing. The sealing performance is enhanced by a piston plate and an annular air bag, and the support structure facilitates disassembly.

Benefits of technology

It achieves stability and sealing of pipeline connections, avoids gas leakage, is easy to operate, meets different installation requirements, and provides reliable gas delivery guarantee.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122170288A_ABST
    Figure CN122170288A_ABST
Patent Text Reader

Abstract

This invention belongs to the technical field of pipeline connection equipment, specifically a sealing and docking device for coal mine gas pipelines and its usage method. This device addresses the problems of poor sealing and stability, cumbersome operation, and difficulty in disassembly associated with traditional docking methods. The technical solution is as follows: The coal mine gas pipeline sealing and docking device includes a connecting joint and pipeline bodies at both ends. The connecting joint is equipped with a fixing locking ring and a fixing inner locking ring. Through the cooperation of trapezoidal tenons and trapezoidal teeth in the limiting structure, and the cooperation of piston plate I, rubber sealing ring II, and annular air bag in the sealing structure, a stable connection and reliable sealing between the connecting joint and the pipeline body are achieved. Simultaneously, the driving structure controls the operation of the sealing structure, and the support structure facilitates the installation and fixation of the device. This device improves the sealing and stability of pipeline docking, is easy to operate, and facilitates disassembly and maintenance.
Need to check novelty before this filing date? Find Prior Art