Carbon dioxide fracturing device

Abstract

A carbon dioxide fracturing device comprises an energy relief head, a constant-pressure energy relief piece, a main pipe and a filling head, wherein the energy relief head and the filling head are respectively screwed with the two ends of the main pipe; a filling channel leading to a filling cavity of the main pipe and a thimble capable of opening and closing the filling channel are arranged on the filling head; an energy relief channel is arranged on the energy relief head; one end of the energy relief channel leads to the filling cavity of the main pipe, and the other end of the energy relief channel leads to the outside of the carbon dioxide fracturing device; the constant-pressure energy relief piece is arranged between the energy relief channel of the energy relief head and the filling cavity of the main pipe in a sealed manner; a heating device is arranged in the filling cavity of the main pipe; and the constant-pressure energy relief piece fractures when the heating device heats up and gasify liquid carbon dioxide in the filling cavity of the main pipe and the carbon dioxide gas expands to a certain pressure. The carbon dioxide fracturing device can replace detonators and explosives, which are frequently used in mine mining, avoids gas explosion caused by open fire to realize safety production of mines, can also enable coal to pre-split in the gas exhausting and mining process, effectively increases the air permeability of coal beds and improves the gas exhausting and mining efficiency of coal beds.

Description

technical field [0001] The invention relates to the field of blasting devices, in particular to a carbon dioxide cracker. Background technique [0002] Explosive blasting is still one of the methods of coal mining. Explosive blasting is powerful and fierce, and it is a typical open flame blasting. However, there are many defects in open flame blasting, and there are high requirements for use conditions, use environment, daily management, etc., especially in coal mines. Many coal mine gas accidents are caused by open flame explosions. Simultaneously, the cases of other accidental explosions due to explosives also occur from time to time, which has affected safe production and caused economic losses. Contents of the invention [0003] In order to overcome the shortcomings of the above-mentioned prior art, the object of the present invention is to provide a carbon dioxide cracker, which can replace the detonator and explosives commonly used in mine mining, avoid gas explos...

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Problems solved by technology

At the same time, other cases of accidental explosions due to explosives also occu

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