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...

Examples

Embodiment Construction

[0031] The specific implementation manners of the present invention will be described in further detail below with reference to the accompanying drawings.

[0032] Such as figure 1 As shown, a high-pressure multi-phase jet cutting performance testing system of the present invention includes a high-pressure water supply system, a high-pressure air supply system, a gas-liquid mixing device 24, a test platform, and a test monitoring system.

[0033] The high-pressure water supply system is mainly composed of an emulsion plunger pump 1, a water tank 2, a pressure regulating valve 3 and an intelligent vortex flowmeter 4, among which the pressure regulating valve 3 and the intelligent vortex flowmeter 4 can control the emulsion plunger pump 1 The outlet water pressure and outlet water flow rate are adjusted and monitored respectively; the high-pressure air supply system is mainly composed of an air compressor 5, a gas storage cylinder 6 and an air source distribution box 7, of which...

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...

Examples

Embodiment Construction

[0031] The specific implementation manners of the present invention will be described in further detail below with reference to the accompanying drawings.

[0032] Such as figure 1 As shown, a high-pressure multi-phase jet cutting performance testing system of the present invention includes a high-pressure water supply system, a high-pressure air supply system, a gas-liquid mixing device 24, a test platform, and a test monitoring system.

[0033] The high-pressure water supply system is mainly composed of an emulsion plunger pump 1, a water tank 2, a pressure regulating valve 3 and an intelligent vortex flowmeter 4, among which the pressure regulating valve 3 and the intelligent vortex flowmeter 4 can control the emulsion plunger pump 1 The outlet water pressure and outlet water flow rate are adjusted and monitored respectively; the high-pressure air supply system is mainly composed of an air compressor 5, a gas storage cylinder 6 and an air source distribution box 7, of which...

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