Self-driving speed sensor of rotating cylindrical turbo-drill based on friction nanometer

Abstract

The invention provides a self-driving speed sensor of a rotating cylindrical turbo-drill based on friction nanometer. The self-driving speed sensor of the rotating cylindrical turbo-drill based on thefriction nanometer includes a shell, a cylinder, a driving shaft and a circuit board; the cylinder is fixed inside the shell, and the two ends of the cylinder are sealed; the driving shaft penetratesthe cylinder and is rotatable; a gap exists between the driving shaft and the inner wall of the cylinder; the inner wall of the cylinder is provided with a plurality of curved metal sheets uniformlydisposed around the axis thereof; the outer wall of the driving shaft is provided with a flexible friction material film; the circuit board is connected to all metal sheets and the friction material film separately; the circuit board is disposed in the shell; one end of the driving shaft extends out of the shell and the end is connected to the rotating shaft of the turbo-drill; the shell is connected to the shell of the turbo-drill; and the circuit board monitors an electrical signal generated by the friction between the friction material film and each metal sheet, and calculates the rotational speed of the turbo-drill according to the electrical signal. The self-driving speed sensor of the rotating cylindrical turbo-drill based on the friction nanometer has the beneficial effect that theself-driving speed sensor realizes real-time measurement of the turbo-drill speed according to the power generation principle of a friction nano-generator, and can work without an external power source.

Description

technical field [0001] The invention relates to the technical field of geological drilling and instrumentation equipment, in particular to a self-driving rotational speed sensor of a rotary cylinder turbodrill based on friction nanometers. Background technique [0002] In recent years, in underground coal mining, natural gas mining, and geothermal energy mining, the operating environment (high temperature, high pressure) is harsh, and with the gradual depletion of surface energy, the required drilling depth continues to increase. With the continuous development of deep drilling , the traditional screw drilling tools have become less and less suitable for the complex underground environment of high temperature and high pressure in deep holes. In this case, the performance of turbo drilling tools is better than that of ordinary screw drilling tools. As an intuitive performance parameter of a turbodrill, the rotational speed is very important for the in-depth study of the turb...

AI Technical Summary

Problems solved by technology

However, these methods require an external power supply to supply power to the sensor, or need to connect a line to provide power on the ground, and the external power supply of the sensor is generally a variety of batteries, maintenance personnel need to frequently replace and check whether the battery is working normally, which is not conducive to the speed of the turbodrill long time measurement

Images