Innovative method for hydrostatic test of long-distance pipeline and related equipment

By employing scientific segmented pressure testing and multi-stage inspection methods, the problem of inaccurate hydrostatic testing in existing long-distance pipelines has been solved, improving testing accuracy and ensuring pipeline quality and safety.

CN121497981APending Publication Date: 2026-02-10DALIAN YUANCHEN ENGINEERING CONSTRUCTION CO LTD
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Patent Information

Application Number
CN202511641520.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-11
Publication Date
2026-02-10

AI Technical Summary

Technical Problem

The existing standards and technologies for hydrostatic testing of long-distance pipelines are unscientific and unreasonable, failing to accurately detect pipeline quality and leading to potential safety hazards, especially under complex geological conditions and combinations of different pipe diameters and materials, where the testing accuracy is insufficient.

Method used

The pressure testing segmentation method is adopted, which scientifically divides the pipeline based on factors such as pipeline height difference, volume, air content and temperature changes. Combined with fluid mechanics theory, the water filling process and pressurization process are controlled, and the pipeline quality is ensured to be qualified through multi-stage testing.

Benefits of technology

This has improved the accuracy of quality inspection for long-distance pipelines, reduced safety hazards, ensured the quality of every inch of pipeline, and injected strong momentum into the high-quality development of long-distance pipeline projects.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention provides a long-distance pipeline hydrostatic test innovation method and related equipment, and the method comprises the steps: carrying out the pressure test segmentation of a long-distance pipeline based on the related parameters of the long-distance pipeline, so as to obtain a first-stage pipe section; according to a water filling control condition, the pipe section of the stage is filled with water, so that a pipe section of a second stage is obtained; continuously injecting water into the pipe section in the second stage to increase the pressure of the pipe section in the second stage to thermodynamic equilibrium pressure to obtain a pipe section in a third stage; boosting the pipe section of the third stage to obtain a first detection result and a pipe section of a fourth stage; in response to the fact that the first detection result is qualified, the air existing amount in the pipe section is calculated, and a second detection result and the pipe section of the fifth stage are obtained; performing a sealing test on the pipe section in response to the fact that the second detection result is qualified so as to obtain a third detection result; and if the third detection result is qualified, determining that the quality of the long-distance pipeline is qualified. Through the method, the accuracy of quality detection of the long-distance pipeline can be improved.
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