A multi-stage sealed wellhead device for oil fields

CN224300850UActive Publication Date: 2026-05-29JIANGSU JULONGHU MASCH MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-22
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

The existing multi-stage sealing devices at oil wellheads are designed as an integrated unit, which makes it difficult to disassemble and replace the sealing components, thus failing to effectively prevent oil and gas leaks, resulting in resource waste and environmental pollution.

Method used

A multi-stage sealing wellhead device for oilfields was designed, which adopts a rotating sealing disc, a spiral sealing disc, and a pressure cap structure. Combined with a test gauge, it achieves multi-stage sealing, and the sealing disc is connected by a screw to facilitate the disassembly and replacement of leaking components.

Benefits of technology

It achieves multi-stage sealing of the sealed cylinder, enabling timely monitoring of leaks and convenient maintenance and replacement of sealing components, thus preventing leaks and protecting resources and the environment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to sealing equipment technical field, specifically disclose a kind of oilfield multistage sealing wellhead device, the oilfield multistage sealing wellhead device includes: sealing cylinder body, sealing cylinder body's both sides are welded with sealing pipe, the inner wall sealing of sealing pipe is slidably connected with sealing disc one and sealing disc two, the upper end inner wall of sealing cylinder body is clamped with rotary sealing disc, the upper end of sealing cylinder body is threadedly connected with helical sealing disc, helical sealing disc is contacted with rotary sealing disc, the upper end sealing of sealing cylinder body is clamped with gland, and gland is threadedly connected with fixed hoop;Beneficial effects are: through rotary sealing disc, helical sealing disc and gland can carry out multistage sealing to sealing cylinder body, through detection table can monitor internal sealing state, by rotating screw rod, so that sealing disc one is connected with sealing disc two, by cutting off inside sealing cylinder body, it can overhaul and replace the component of sealing cylinder body internal leakage.
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