System and method for testing full-stroke sealing performance of hydraulic stand column or jack

Abstract

The embodiment of the invention provides a system and a method for testing the full-stroke sealing performance of a hydraulic stand column or a jack. Comprising an emulsion pump station, a connecting oil way, a tested hydraulic stand column or jack, a reversing valve, a hydraulic lock, a first oil way connecting block, a second oil way connecting block, a one-way valve, a large-flow loading safety valve, a first stop valve, a second stop valve, a third stop valve, a fourth stop valve, a first pressure gauge, a second pressure gauge, a third pressure gauge and a first pressure sensor. A second pressure sensor, a flow sensor and an acceleration sensor; according to the hydraulic stand column or jack internal loading test bed, the problem of leak detection of a traditional test bed for detecting a tested hydraulic stand column or jack is solved, the hydraulic stand column or jack is internally loaded by adopting a large-flow loading safety valve, a complex external loading device is simplified, the cost of a test system is reduced, and unqualified hydraulic stand columns or jacks can be removed according to test data.

Description

technical field [0001] The invention relates to the technical field of hydraulic seal detection, in particular to a testing device and a testing method for the full-stroke sealing performance of a hydraulic column or a jack. Background technique [0002] As one of the main equipment of fully mechanized coal mine working face, hydraulic support plays an important role in supporting the roof of working face; hydraulic column or jack is the key component of hydraulic support. If the hydraulic column or jack fails in sealing performance, it will lead to hydraulic support If it cannot work normally, it will not only affect the production of coal, but also endanger the safety of personnel and equipment at the coal mining face. Therefore, the hydraulic column or jack of the hydraulic support needs to be repaired from time to time. [0003] In actual work, the existing coal mine electromechanical equipment and maintenance technical specifications can only carry out the loading test ...

AI Technical Summary

Problems solved by technology

[0002] Hydraulic support, as one of the main equipment of fully mechanized coal mining face, plays an important role in supporting the roof of the working face; hydraulic column or jack is a key component of hydraulic support, if the sealing performance of hydraulic column or jack fails, it will cause hydraulic support If it cannot work normally, it will not only affect the production of coal, but also endanger the safety of personnel and equipment in the coal mining face. Therefore, it is necessary to check and repair the hydraulic column or jack of the hydraulic support from time to time.

[0003] In actual work, the existing coal mine electromechanical equipment and maintenance technical specifications can only carry out loading tests on the middle position, the maximum height 1 / 3, 2 / 3 positions and both ends of the hydraulic column or jack, and cannot carry out the full stroke loading test. In addition to the incomplete inspection of the hydraulic column or jack, there is a problem of omissions, so that even if the hydraulic column or jack passes the test, only a few positions can be guaranteed to be qualified, and the hydraulic column or jack cannot be guaranteed to be qualified for the entire stroke.

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