Drilling fluid generator for wireless while-drilling inclinometer

Abstract

The invention relates to a drilling fluid generator for a wireless while-drilling inclinometer. The drilling fluid generator comprises an impeller, a cowling, a shell, a transmission assembly and a generator assembly, wherein the impeller is fixed to the outer side wall of one end of the cowling, one end of the transmission assembly is coaxially fixed to the inner side wall of one end of the cowling, and the other end of the transmission assembly is fixedly connected with a rotor of the generator assembly; the shell coaxially covers at the outer side of the transmission assembly, and the two ends of the shell are separately movably connected with the transmission assembly; the end close to the impeller of the shell is located in the cowling, and a self-cleaning cavity is formed between theend and the cowling; the end far from the impeller of the shell is fixedly connected with the generator assembly; and the self-cleaning cavity, the cowling and the connecting part of the transmissionassembly and the shell are all filled with lubricating grease. The generator of the invention is a fully-open, non-seal and non-compensating underground generator which is simple and compact in wholestructure, small in axial size, free of fragile components, long in service life, great in reliability and convenient to maintain.

Description

technical field [0001] The invention relates to the technical field of generators, in particular to a drilling fluid generator for a wireless inclinometer while drilling. Background technique [0002] The drilling fluid generator is an important part of the wireless inclinometer while drilling and other similar downhole drilling instruments. The drilling fluid generator converts the kinetic energy of the high-speed flowing circulating drilling fluid into electrical energy, which can replace or be used with batteries to power downhole instruments. Due to the harsh downhole working conditions, high temperature and high pressure accompanied by the erosion of drilling fluid, the protection of the core components of the drilling fluid generator is a key issue. The existing drilling fluid generator technology is to seal the core components of the generator, unilaterally improve the sealing pressure resistance performance requirements, and even increase the pressure compensation b...

AI Technical Summary

Problems solved by technology

The existing drilling fluid generator technology is to seal the core components of the generator, unilaterally improve the sealing pressure resistance performance requirements, and even increase the pressure compensation balance system or micro-leakage system to improve the sealing reliability, resulting in complex structure, high price and maintenance Difficulty, short life of key sealing components, and reduced overall reliability, which are largely difficult to meet the needs of practical applications

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