Electricity-burning-mechanical energy comprehensive rock breaking drill

Abstract

The invention relates to an electricity-burning-mechanical energy comprehensive rock breaking drill. The electricity-burning-mechanical energy comprehensive rock breaking drill comprises a threaded connector, a wall making device, a controller, an injector, an electric heating device, a cable and a heat conduction element; the lower end of the threaded connector is connected with the wall making device, an annular hole and a center hole are formed in the threaded connector, an annular groove and a burning chamber are formed in the wall making device, the center hole is communicated with the burning chamber, and an outlet of the burning chamber is formed in the bottom face of the wall making device; the controller and the injector are sequentially arranged in the center hole in the drill advancing direction, the controller is a one-way valve and an electronic ignition device, an air channel is formed between the annular hole and the injector, the annular groove is formed between the burning chamber and the outer wall of the wall making wall, the electric heating device and the heat conduction element are arranged in the annular groove, the heat conduction element is in contact with the electric heating device, the cable penetrates through the annular hole to be connected with the electric heating device, and cutting teeth are arranged at the bottom end of the wall making wall. According to the electricity-burning-mechanical energy comprehensive rock breaking drill, a heat source is provided for the wall making device through the electricity for wall making, the thermal loss is small, the temperature of the wall making device is controllable, and the wall making effect is good.

Description

technical field [0001] The invention relates to an electric-combustion-mechanical energy comprehensive rock-breaking drill bit, which is suitable for engineering fields such as oil and gas, prospecting, and building foundation construction. Background technique [0002] Rock crushing is the process of separating rock from a rock mass. Research on rock crushing methods and technologies is a long-term concern in mining, civil engineering, transportation, military and other industries. With the development of modern science and technology, some new development trends have emerged in the methods and technologies of rock crushing. According to literature research, rock breaking methods can be divided into two types: mechanical energy rock breaking and thermal rock breaking. Among them, mechanical energy rock breaking mainly includes mechanical drilling, conventional blasting method, projectile impact method, hydroelectric effect method, spark discharge method, and blasting drill...

AI Technical Summary

Problems solved by technology

[0004] At present, there are few methods of combining conventional mechanical energy and thermal energy rock breaking. Wall builders generally use combustion heat for heating, but because the combustion chamber is far away from the outer wall of the wall builder, the temperature of the wall builder is not high and the temperature control is unstable. , the wall-building effect is not ideal; if mechanical energy, thermal energy and electrical energy are combined, the high-temperature hot air flow generated by combustion will significantly reduce the strength of the rock under the drill bit, and even rockburst will occur, and then the rock with lower strength will be destroyed by the rotating cutting teeth , quickly form a wellbore, and then use an electric heater to heat the wall builder to a high temperature above the melting point of the rock. The wall builder clings to the well wall and ceramicizes the well wall, which can solve the problem of slow drilling speed and wall building effect in deep wells and hard formations Non-ideal problems, providing an effective method for drilling hard formations and complex formations

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