Efficient energy-saving type hydraulic control safety valve actuator and use method thereof

By optimizing the pipeline connection and control circuit of the hydraulic safety valve actuator, the problems of slow manual pump pressurization, time-consuming and labor-intensive operation, and complex wiring of high and low pressure valve groups in the use of traditional hydraulic safety valves at high pressure gas wellheads have been solved, achieving efficient, energy-saving, and low-cost safety valve control.

CN119825765BActive Publication Date: 2026-06-05SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
Filing Date
2025-01-23
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Traditional hydraulic safety valves are slow to pressurize manually when used at high-pressure gas wellheads, which is time-consuming and labor-intensive. They also have short pressure holding time, complex wiring of high and low pressure valve groups, high maintenance costs, and the risk of pressure leakage.

Method used

A high-efficiency and energy-saving hydraulic safety valve actuator was designed, including an oil tank, high and low pressure valve groups and a fusible plug. By optimizing the pipeline connection and control circuit, the number of manual pump pressurization times is reduced, the pressure holding time is extended, and the wiring of the high and low pressure valve groups is simplified, reducing the number of pressure leakage points.

Benefits of technology

It significantly improves the pressure holding time of the hydraulic safety valve, reduces the number of manual pump pressurizations, simplifies pipeline connections, reduces maintenance costs, and improves safety performance, thus providing a guarantee for the safe production of unconventional natural gas wells.

✦ Generated by Eureka AI based on patent content.

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    Figure CN119825765B_ABST
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Abstract

The application aims to provide a high-efficiency energy-saving type hydraulic control safety valve actuator and a use method thereof, and belongs to the technical field of valve control. The actuator comprises an oil tank, a high-low pressure valve group and a fusible plug. One end of the bottom of the oil tank is provided with pipeline I. A hand pump, a check valve, a main oil source accumulator and a main oil source pressure gauge are sequentially arranged on the pipeline I. The high-low pressure valve group is connected with a field gas source. The fusible plug is connected with a pilot oil source accumulator and a pilot pressure gauge I through pipeline II. The top of the oil tank is connected with the pipeline I through pipeline III. A stop valve II and a hydraulic control pilot valve are arranged on the pipeline III. A pipeline IV is arranged between the pipeline III and the pipeline I. A stop valve I is arranged on the pipeline IV. The hydraulic control pilot valve is connected with the pipeline II through pipeline V. The application can prolong the pressure maintaining time of the hydraulic control safety valve and reduce the pressurizing frequency of the hand pump.
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