Turbodrill rotational speed measuring nipple based on nano system

Abstract

The invention provides a turbodrill rotational speed measuring nipple based on a nano system. The turbodrill rotational speed measuring nipple comprises a shell and an end cover, wherein an opening isformed in the lower end of the shell and covered with the end cover; an upper nanodisk, a lower nanodisk and a circuit plate are arranged in the shell, the lower nanodisk is fixed into the shell, andthe upper nanodisk is arranged on the upper part of the lower nanodisk and the upper nanodisk and the lower nanodisk are attached; the upper nanodisk and the lower nanodisk are correspondingly connected with the circuit plate, and a middle shaft is fixed to the middle part of the end cover, the middle shaft penetrates through the lower nanodisk, the upper nanodisk and the upper end of the shell,and the middle shaft is fixedly connected with the upper nanodisk; a turbine of a turbodrill is connected to the upper end of the shell, the end cover is connected with a drill bit of the turbodrill,the drill bit rotates to drive the end cover to rotate so that the middle shaft can rotate, and thus the upper nanodisk rotates and generates relative rotational friction with the lower nanodisk to generate electricity; and the circuit plate detects the electricity generating frequency and calculates the rotational speed of the turbodrill according to the electricity generating frequency. The turbodrill rotational speed measuring nipple based on the nano system has the beneficial effects that the rotational speed of the turbodrill can be measured without the requirement for additionally arranging a rotational speed sensor, and the environmental adaptability is high.

Description

technical field [0001] The invention relates to the fields of geological drilling and instrumentation, in particular to a nanosystem-based turbodrill rotational speed measuring nipple. Background technique [0002] With the sustained and rapid development of China's economy and society, the demand and consumption of underground mineral resources have also increased year by year, making the contradiction between supply and demand of mineral resources increasingly prominent, and the supply and security of mineral resources has become a bottleneck restricting China's economic development. . However, at this stage, the shallow mineral resources in most parts of China have been proven and the mining tends to be exhausted, and the relevant research results show that there are huge potential mineral resources in the deep part of the Chinese mainland, so it is imperative to strengthen deep prospecting. [0003] In deep prospecting, turbodrills are generally used for drilling, and r...

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Problems solved by technology

[0004] For turbodrills, the rotational speed of turbodrills is one of the important parameters to measure and control the drilling efficiency of turbodrills, so it is necessary to measure the rotational speed of turbodrills when they are working downhole. The special working conditions (high temperature, high pressure and strong vibration) when working in the downhole cause the existing speed measurement method to be used in the downhole, such as the need to destroy the turbodrill for installation, the installation accuracy is too high, the volume is too large, the temperature Drift and many other problems lead to large measurement errors and cannot meet the needs of downhole speed measurement of turbodrilling tools. Therefore, it is urgent to develop a speed measurement nipple with high accuracy and suitable for the downhole working conditions of turbodrilling tools.

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