Thin-walled rubber tubular fracturing device

Abstract

The invention belongs to the technical field of coal mining, and concretely relates to a thin-walled rubber tubular fracturing device. The device is a pressure device capable of sealing CO2 and generating a fracturing force, has no influences on other coal mining devices after the fracturing, and is more safe and secure to operate than explosives. The fracturing device includes liquid CO2 gas cylinders, a support cylinder, a first rubber sealing plug, a second rubber sealing plug, an air tube, a thin-walled rubber tube, a heat generating agent, an ignition head, an electrode assembly, an initiator and a water tank. The fracturing device is refrigerated and plugged in a rock hole through a liquid CO2 refrigeration technology, and the filling and storage of an initial CO2 gas in the fracturing device are realized through using a thin-walled rubber elastic deformation supporting principle. The heat generating agent is ignited through the initiator to generate a large amount of heat, and low-temperature liquid CO2 absorbs the heat, expands rapidly and fractures rocks in a coal seam to solve the problem of the influences of the coal seam rock belt on the coal mining, so the fracturing device is worth adopting and promoting.

Description

technical field [0001] The invention belongs to the technical field of coal mining, and specifically relates to a thin-walled rubber tube type fracturing device, which can realize the sealing of CO 2 , and the pressure equipment that can generate fracturing force will not affect other coal mining equipment after fracturing, and the operation of the fracturing device is safer and more reliable than explosives. Background technique [0002] In the process of traditional coal mining, fault zones and rock zones are often encountered, and the appearance of rock zones in coal seams will bring a series of problems to coal mining. The usual solution is: adopt the measure of perforating and laying explosives on the rock belt, blast a section of rock with explosives, and then mine coal with a shearer. Along with the appearance of new technology now, also have to fill expansion agent and water in rock hole, then seal hole, utilize the expansion force of expansion agent to break rock. ...

AI Technical Summary

Problems solved by technology

At present, these two technologies have their own advantages and disadvantages: the traditional explosive rock-breaking technology has the advantages of relatively mature technology, low cost, short operation time, and obvious immediate effect; There is also a certain risk in the use of explosives, especially in coal mines that contain a certain concentration of gas, so be careful when using explosives

Using expansion agent to expand and fracture rock technology: the advantages are relatively safe, simple operation, and low technical requirements for workers; the disadvantage is that the expansion process takes too long, usually it takes 24 hours of expansion time to produce obvious effects, and the fracture radius is relatively small No larger rupture radius than explosives

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