Underground magnetic coupling turbine power cantilever type alternating current generator

Abstract

The invention discloses an underground magnetic coupling turbine power cantilever type alternating current generator, which comprises flow pipes, pressing caps, flow guide rings, fluid directors, supporting pipes, upper bearings, magnetomotive turbine assemblies, lower bearings, straight-wing fluid directors, a generator shell, a positioning screw, supporting bearings, a generator rotor and a generator stator, wherein the generator rotor is a cantilever type alternating current generator rotor and consists of coupling magnetic steel, a coupling magnetic steel bracket, a rotor magnetic steel bracket and rotor magnetic steel; the generator stator is a cantilever type alternating current generator stator and consists of a magnetic separation frame, a stator outer shell body, a stator coil, a stator inner shell body and a locating pin. The generator has the advantages of high power generation efficiency, low manufacture and use cost and long service life, and large-power generation can be realized.

Description

technical field [0001] The invention relates to the technical field of measurement-while-drilling (MWD) in the petroleum industry, in particular to an underground magnetically coupled turbine-powered cantilever alternator. Background technique [0002] The measurement-while-drilling (MWD) technology of the petroleum industry is a main direction of petroleum technology services. After more than 10 years of development, the technology in the international petroleum field is relatively mature. The downhole power supply is the key to the measurement-while-drilling (MWD) technology of the petroleum industry. , the battery pack is the most widely used at present, but the capacity of the battery pack is limited, the service life is short, it is greatly affected by the rise of the downhole temperature, and the price is expensive; replacing the battery pack requires frequent tripping operations, and it is difficult for normal drilling. Footage has a great impact, and often the batter...

AI Technical Summary

Problems solved by technology

[0006] U.S. Patent US517464 discloses a downhole measurement tool that integrates a drilling fluid pulse generator and a turbine generator. The generator consists of a turbine propeller, a drive shaft, a transmission , generator, and speedometer. Due to the limitation of downhole space and turbine characteristics, the structure is complex and the power is low. The bearing and coil work directly in the drilling fluid, which requires high drilling fluid quality, bearing performance, and coil insulation. Long-term high-speed operation in the harsh environment of high temperature and strong vibration underground greatly reduces its service life

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