Ultrasonic generator based on direct-current power supply

Abstract

The invention discloses an ultrasonic generator based on a direct-current power supply. The ultrasonic generator comprises a direct-current power supply, an inverter circuit, an ultrasonic generating circuit and a remote control unit, wherein the direct-current power supply is composed of a rechargeable battery with a charging interface; and the remote control unit is provided with a frequency adjusting circuit and an on-off control circuit, and is used for controlling the direct-current power supply, the inverter circuit and the ultrasonic generating circuit. Preferably, the ultrasonic generator also comprises two shells which are coaxially connected, wherein the direct-current power supply and the ultrasonic generating circuit are enclosed in the first shell; the ultrasonic generating circuit and the remote control unit are enclosed in the second shell; and the two shells are cylindrical, a plurality of radiating fins extending in axial directions are distributed on outer circle surfaces of the two shells in circumferential directions, and an air guide groove is formed between every two adjacent radiating fins. The beneficial effect of the invention is that remote control can be realized. When the ultrasonic generator is used for a long-distance directional drilling bit, an alternating-current power line and a control signal line can be prevented from being arranged along a drill rod, safety of a drilling process is ensured, and the hole forming speed and the drilling efficiency are improved.

Description

technical field [0001] The invention relates to an ultrasonic generator, in particular to an ultrasonic generator based on a DC power supply. Background technique [0002] Studies have shown that under the action of high-frequency vibrations in rocks, internal cracks are rapidly formed and expanded, and their strength is greatly reduced in a short period of time. The natural frequency of rocks in coal-measure formations is mostly between 20kHz and 50kHz, and the frequency range of ultrasonic waves can just meet the frequency when rocks resonate. The introduction of ultrasonic waves into engineering rock crushing for related conversion and application can increase the drilling speed of the drill bit , Extend the life of the drill bit. [0003] At present, although ultrasonic-assisted rock breaking has been applied in oil well drilling or tunneling, existing ultrasonic generators usually use wired power alternating current, or have a self-generating structure. Since the powe...

AI Technical Summary

Problems solved by technology

Since the power supply line needs to be laid along the drill pipe, the self-generating structure requires a large layout space, neither of which is suitable for long-distance directional drilling construction similar to underground coal mines

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