High-pressure multi-phase jet-flow cutting performance test system and method

Abstract

The invention provides a high-pressure multi-phase jet-flow cutting performance test system and a high-pressure multi-phase jet-flow cutting performance test method. The test system comprises a high-pressure water supply system, a high-pressure air supply system, an air-liquid mixing device, a test platform and a test monitoring system. By utilizing the high-pressure water supply system, the high-pressure air supply system and the air-liquid mixing device, a high-pressure water jet flow or a high-pressure air-liquid two-phase jet flow can be formed, and the pressure and air content of the jet flow can be controlled; by utilizing the test platform and the test monitoring system, the impact force and the erosion damage capacity of the high-pressure jet flow can be tested. By utilizing the high-pressure multi-phase jet-flow cutting performance test system, the high-pressure water jet flow or air-liquid two-phase jet flow impact test of parameters including different pressure, air contents, spray nozzle diameter, target distance and the like under a submergence or non-submergence condition can be carried out, important significance for analyzing a relation between various jet-flow erosion rock breaking properties and characteristic parameters and optimizing a hydraulic slot unloading anti-reflection technology can be realized; moreover, the high-pressure multi-phase jet-flow cutting performance test system is high in practicability, simple in structure, convenient to operate, safe and reliable.

Description

technical field [0001] The invention relates to a high-pressure multi-phase jet cutting performance testing system and method, especially suitable for testing the cutting performance of high-pressure water jets or high-pressure gas-liquid two-phase jets used in hydraulic slit pressure relief and anti-reflection technology. Background technique [0002] Coal seam hydraulic slotting pressure relief and anti-reflection technology refers to drilling gas drainage boreholes in the coal seam first, and then using high-pressure water jets to cut the coal body along the hole in the borehole, forming a line with a certain width and height on both sides of the borehole. Deep flat slots. Its basic principle is to relieve pressure and eliminate outbursts, change the current situation that the scope of drilling is small in the past, use high-pressure water jets to cut the coal body in the drill hole, transfer the internal stress of the coal body to the deep part, increase the air permeabi...

AI Technical Summary

Problems solved by technology

[0003] Technical problem: The purpose of the present invention is to solve the problem that the existing technology cannot test and study the cutting and rock-breaking performance of various jets such as pure water jets and gas-liquid two-phase jets and the optimization of their characteristic parameters, and provides an easy-to-operate, Reliable high-pressure multiphase jet cutting performance testing system and method

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