Adjustable liquid injecting and seam cutting device

Abstract

The invention mainly provides an adjustable liquid injecting and seam cutting device. The adjustable liquid injecting and seam cutting device is mainly composed of a shell, a high-pressure energy gathering conversion valve set and a blowout control safety valve set. The purpose of converting seam cutting pressure can be achieved at any pressure value by adjusting the pressure of energy gathering valve elements in the high-pressure energy gathering conversion valve set, a traditional seam cutting water scalpel and other devices have high unicity, seam cutting is only carried out at a fixed pressure value without any pressure adjusting, the use requirements of most mines can be met when drilling liquid pressure is set in an adjustable stat when drilling liquid passes, losses of manpower andmaterial resources are reduced, and compared with the traditional seam cutting water scalpel, by means of practical application, the adjustable liquid injecting and seam cutting device is more flexible and good in seam cutting effect, and the purpose of gas permeability increase or ground pressure release is effectively achieved.

Description

technical field [0001] The invention mainly relates to an adjustable liquid injection slit device, which is mainly used for high-pressure liquid injection rotary jet slit in geological drilling, increasing air permeability and used for fracturing drilling. Background technique [0002] The development of geological exploration drilling has a long history. In the process of continuous evolution and development, people have developed many types of drilling technology solutions, but most of the drilling is based on the research and development and optimization of drilling tool products. In terms of the current market product coverage, Mostly, the drill pipe is connected with the drill bit and then the drilling machine is used to drive the drilling operation. However, the drilling process here results in a limited forming aperture. It is difficult to increase the internal structure space in the hole, and it is impossible to increase the radial space in the hole. Purpose. After ...

AI Technical Summary

Problems solved by technology

[0002] The development of geological exploration drilling has a long history. In the process of continuous evolution and development, people have developed many types of drilling technology solutions, but most of the drilling is based on the research and development and optimization of drilling tool products. In terms of the current market product coverage, Mostly, the drill pipe is connected with the drill bit and then the drilling machine is used to drive the drilling operation. However, the drilling process here results in a limited forming aperture. It is difficult to increase the internal structure space in the hole, and it is impossible to increase the radial space in the hole. Purpose

After research in coal mine gas drainage boreholes or geological pressure relief boreholes, etc., if the pre-detection gas high point position or ground pressure impact high position is radially increased, the gas drainage rate and ground pressure release range can be increased. Several times, for this reason, people have developed a variety of devices for slotting or blasting in holes. Generally, liquids are used for high-pressure flushing of slots in holes, and booster pumps are used to pressurize the slots during slotting. To a certain range, water conservancy cutting can be realized through nozzles, but this product has been tested and used in many places. Due to the different environment, coal seam coefficient and rock hardness of each mining area and the single product design, it is impossible to adjust the pressure, resulting in inconsistent pressure conversion. In place and many other problems, increasing after-sales costs and even making it unusable

In-hole blasting is mostly in the form of gas compression, using equipment or purchasing existing compressed gas, transporting the compressed gas to the location to be blasted through pipelines, and then guiding the blasting. Such technological measures are extremely risky and may easily cause gas and mine blasting. The sudden release of pressure will cause disasters such as outbursts or even gas explosions and roof falls, endangering the safety of miners. In addition, the quality requirements of workers are strict.

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