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Adjustable ultrahigh-pressure water jet cutting device and using method

A cutting device and ultra-high pressure technology, applied in the direction of metal processing, etc., can solve the problems of difficult effective cutting of coal and rock, narrow cutting slot width, and inconspicuous effect of pressure relief and anti-reflection, etc., so as to reduce the number of loading and unloading, smooth installation, and practical The effect of the operation effect is remarkable

Active Publication Date: 2021-08-13
CCTEG SHENYANG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hydraulic reaming, hydraulic slotting, drilling and cutting integration, etc. are widely used as pressure relief and anti-reflection measures. The working pressure of existing hydraulic slotting and hydraulic reaming devices is between 30 and 50 MPa, which is difficult to be effective for coal rocks with relatively high hardness. Cutting; 100MPa ultra-high pressure water jet slotting equipment is also put into use, but the high and low pressure conversion threshold is fixed, the width of the cutting slot is narrow, and the effect of pressure relief and antireflection is not obvious

Method used

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  • Adjustable ultrahigh-pressure water jet cutting device and using method
  • Adjustable ultrahigh-pressure water jet cutting device and using method
  • Adjustable ultrahigh-pressure water jet cutting device and using method

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Effect test

Embodiment 1

[0034] The detailed content of the present invention and its specific implementation will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0035] refer to figure 1 , an adjustable ultra-high pressure water jet cutting device, which includes a drill bit 1 connected in sequence from front to back, an ultra-high pressure fluid pressure conversion device 2, an ultra-high pressure sealed drill pipe 3, an ultra-high pressure rotating water tail 5, and multiple ultra-high pressure Hose 6 and ultra-high pressure hydraulic pumping station 8; the ultra-high pressure sealed drill pipe 3 is installed on the drilling rig 4 and driven by the rotary device on the drilling rig 4 to rotate and feed, and a pressure relief device is installed between the ultra-high pressure hose 7 The regulating valve 7, the ultra-high pressure fluid pressure conversion device 2 and the ultra-high pressure sealed drill pipe 3, and the ultra-high pressure sealed...

Embodiment 2

[0049] refer to figure 1 , the present invention also provides a method for using an adjustable ultra-high pressure water jet cutting device, the specific implementation steps are as follows:

[0050] (1) The ultra-high pressure sealed drill pipe 3 is installed on the drilling rig 4 and driven by the rotary device on the drilling rig to rotate and feed, and the ultra-high pressure fluid pressure conversion device 2 is installed at the front end of the ultra-high pressure sealed drill pipe 3; the ultra-high pressure fluid pressure conversion A drill bit 1 is installed at the front end of the device; multiple ultra-high pressure hoses 6 are connected behind the ultra-high pressure sealed drill pipe 3 through an ultra-high pressure rotating water tail 5; The ultra-high pressure hose 6 and the ultra-high pressure rotating water tail 5 supply water to the ultra-high pressure sealed drill pipe 3, the ultra-high pressure fluid pressure replacement device 2 and the drill bit 1;

[00...

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Abstract

The invention discloses an adjustable ultrahigh-pressure water jet cutting device. The device comprises a drill bit, an ultrahigh-pressure fluid pressure conversion device, an ultrahigh-pressure sealing drill rod, an ultrahigh-pressure rotating water tail, a plurality of ultrahigh-pressure hoses and an ultrahigh-pressure hydraulic pump station which are sequentially connected from front to back, the ultrahigh-pressure sealing drill rod is driven by a rotating device on a drilling machine to rotate and feed, and pressure relief adjusting valves are installed among the ultrahigh-pressure hoses. The invention further provides a using method of the adjustable ultrahigh-pressure water jet cutting device. Through the ultrahigh-pressure fluid pressure conversion device, a pressure adjusting screw can be rotated according to the working liquid pressure of drilling equipment to adjust a reasonable pressure conversion threshold value during low-pressure drilling, ultrahigh-pressure slotting during conventional low-pressure drilling and drilling removal of the drilling equipment is achieved, the slot width is increased on the basis that the slot cutting depth is increased, the pressure relief and permeability increase range of coal rock is increased, and the purpose of large-range rapid pressure relief and permeability increase of the coal rock is achieved.

Description

technical field [0001] The invention relates to the technical field of high-pressure water-jet cutting devices, in particular to an adjustable ultra-high-pressure water-jet cutting device and a usage method. Background technique [0002] With the continuous use of new technologies and equipment for coal mining, the mining depth continues to deepen at a rate of about 10-20m per year, and deep coal-rock gas dynamic disasters have gradually become the main problem restricting the safe and efficient production of coal mines. The control of coal-rock gas dynamic disasters in deep mines must be carried out from the perspective of coal seam gas drainage compliance and effective pressure relief. Hydraulic pressure relief and permeability enhancement measures for coal seams have a multiplier effect. Medium-hard and hard coals under high-stress conditions in deep Reaming, depressurization, and antireflection require a substantial increase in water jet pressure, thereby improving coal ...

Claims

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Application Information

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IPC IPC(8): B26F3/00
CPCB26F3/004
Inventor 李艳增王耀锋许幸福薛伟超王春光黄鹤唐辉张东旭苏伟伟刘春刚汪开旺高中宁韩兵
Owner CCTEG SHENYANG RES INST
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