Hydraulic quick pressure test flange and method of use

By designing a hydraulic quick-test flange, the hydraulically controlled piston is used to quickly install and remove connecting fastening bolts, solving the problem of long time consumption in existing technologies. This enables rapid flange pressure testing and adaptability to multiple flange specifications, improving the maintenance efficiency of the well control workshop.

CN122191402APending Publication Date: 2026-06-12CHINA NAT PETROLEUM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA NAT PETROLEUM CORP
Filing Date
2024-12-11
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

In the existing technology, when the well control workshop performs pressure testing on the four-way valve or the occupant, it is time-consuming to manually tighten the connecting bolts. The gate blowout preventer cannot test the upper flange steel ring groove, and the limitations of the pressure testing equipment make it impossible to meet the diverse well control requirements.

⚗Method used

A hydraulic quick-testing flange was designed, including a blind plate, a first oil inlet, a shut-off valve, a piston, a second oil inlet, a cylinder, and a test medium port. It is connected to the equipment under test through screw holes, and the hydraulically controlled piston is used to quickly install and remove the connecting fastening bolts to achieve rapid pressure testing of the upper flange.

🎯Benefits of technology

It reduces manual labor intensity, improves maintenance efficiency, saves time on installing and disassembling blind flanges for pressure testing, and adapts to the pressure testing needs of various flange specifications.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN122191402A_ABST
    Figure CN122191402A_ABST
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Abstract

The application provides a hydraulic quick pressure test flange and a use method thereof. The hydraulic quick pressure test flange comprises a blind plate, a first oil inlet, a stop valve, a piston, a second oil inlet, an oil cylinder, a pressure test medium port and a plurality of screw holes. The end face of the blind plate is provided with a plurality of screw holes and is connected with a pressure measuring device through the screw holes. One side of the blind plate is provided with the first oil inlet, and the first oil inlet is in communication with the stop valve. The first side of the piston is provided with the second oil inlet. The second side of the piston is connected with the oil cylinder to form a cavity, and the oil cylinder is in communication with the first oil inlet. The pressure test medium port is arranged on the end face of the blind plate and can be in communication with the pressure measuring device. The application is suitable for pressure test of the upper flange and can effectively reduce the labor intensity and improve the maintenance efficiency.
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