Auxiliary tool for quickly opening blind plate

By designing a quick-opening blind flange auxiliary tool, and utilizing the cooperation of the tightening bolt and the impact rod, the problem of locking ring jamming and sticking was solved, enabling convenient blind flange opening, extending equipment life, and simplifying the operation process.

CN224209862UActive Publication Date: 2026-05-08湖北省天然气发展有限公司 +1
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Patent Information

Application Number
CN202521194593.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-12
Publication Date
2026-05-08
Estimated Expiration
2035-06-12

AI Technical Summary

Technical Problem

Existing locking ring type quick-opening blind flanges are prone to rust and dust accumulation during equipment anti-corrosion treatment, resulting in insufficient locking ring strength. After long-term operation, they are prone to deformation, causing difficulty in opening.

Method used

Design a quick-opening blind flange auxiliary tool, including an installation ring, a rotating ring, a tightening bolt, and an impact rod. The cooperation of the tightening bolt and the impact rod eliminates the locking ring from getting stuck. A spring is used to limit the tightening bolt on the rotating ring. A limit ring and a limit ring connect the tightening bolt to prevent manual tightening. A rubber sleeve or anti-loss rope prevents the impact rod from falling off.

Benefits of technology

It enables easy opening of blind flanges that are difficult to open, extends the service life of equipment, avoids locking ring jamming and sticking, simplifies the operation process, and improves ease of use.

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Abstract

The utility model provides an auxiliary tool for quickly opening a blind plate, which comprises a mounting ring detachably mounted at the front end of a barrel flange; the rotating ring is coaxially and rotatably mounted on the mounting ring, and the rotating ring is arranged on the peripheral wall of the cambered surface of the barrel flange in a sleeving manner; the puller bolt is elastically connected to the rotating ring and is in threaded fit with a bolt hole in the barrel flange; the impact rod is movably connected to the rotating ring and matched with a bolt hole in the barrel flange in an inserted mode. The quick-opening blind plate jackscrew hole is utilized, through mutual cooperation of the puller bolt and the impact rod, blocking and adhesion of the locking ring can be eliminated, the quick-opening blind plate difficult to open can be conveniently opened, the effect is good, and the service life of equipment is prolonged.
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