Novel petroleum underground high-temperature-resistant micro motor structure
A micro-motor, high-temperature-resistant technology, applied in the direction of structural connection, magnetic circuit shape/pattern/structure, electromechanical devices, etc., can solve problems such as affecting motor performance, easy loosening and dislocation of magnets, and easy spillage of glue on the outer surface of magnets, etc. , to achieve the effect of compact structure, improve operability and production efficiency, and avoid easy loosening and dislocation of magnetic steel
Inactive Publication Date: 2022-08-02
HELI TECH ENERGY CO LTD
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Problems solved by technology
[0002] In the rotor structure of traditional micro motors, magnets are generally fixed on the surface of the shaft by pasting. When the motor rotor rotates at high speed, the magnets are prone to loosening and misalignment on the rotor.
In addition, when the magnet is pasted, the excess glue is easy to overflow to the outer surface of the magnet, which seriously affects the performance of the motor
Method used
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[0024] Example: see Figure 1-Figure 6 , the present invention provides a novel oil well underground high temperature resistant micro-motor structure, comprising a motor casing 1, a stator assembly 2 fixed on the inner wall of the motor casing 1, and a rotor assembly rotating in the motor casing 1 3. The motor housing 1 is made of 316L stainless steel, and a rear end cover 4 is connected to the rear end thread of the motor housing 1 . The rotor assembly 3 includes a rotor shaft 302 that is rotatably matched with the rear end cover 4 , a plurality of magnetic steels 305 fixedly embedded on the front end sidewall of the rotor shaft 302 and arranged at regular intervals in a ring shape, sleeved on the inner side of the stator assembly 2 and The magnetic steel protective sleeve 306 is sleeved outside the plurality of magnetic steels 305 , the permanent magnet 308 is fixedly embedded on the rear side wall of the rotor shaft 302 , and the permanent magnet protective sleeve 309 is s...
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The invention relates to the technical field of micro motors, in particular to a novel petroleum underground high-temperature-resistant micro motor structure which comprises a motor shell, a stator assembly fixedly arranged on the inner wall of the motor shell and a rotor assembly rotationally arranged in the motor shell. The rotor assembly comprises a rotor shaft which is in running fit with the rear end cover, a plurality of magnetic steels which are fixedly arranged on the side wall of the front end of the rotor shaft and are annularly and uniformly arranged at intervals, a magnetic steel protection sleeve which sleeves the inner side of the stator assembly and sleeves the magnetic steels, and a permanent magnet which is fixedly arranged on the side wall of the rear end of the rotor shaft; and the permanent magnet protection sleeve is sleeved outside the permanent magnet. According to the invention, the magnetic steel is embedded into the magnetic steel groove, and external protection is carried out through the magnetic steel protection sleeve, so that the magnetic steel is prevented from being easily loosened and misplaced when the rotor assembly rotates at a high speed, the overall structural stability of the rotor assembly is improved, the magnetic field waveform distortion of the rotor assembly is reduced, and the electromagnetic performance of the rotor assembly is more stable.
Description
technical field [0001] The invention relates to the technical field of micro-motors, in particular to a novel high-temperature-resistant micro-motor structure in oil wells. Background technique [0002] In the rotor structure of traditional micro-motors, the magnets are generally fixed on the surface of the rotating shaft by sticking. When the rotor of the motor rotates at a high speed, the magnets are prone to loosening and dislocation on the rotor. In addition, when the magnet is pasted, the excess glue is easy to overflow to the outer surface of the magnet, which seriously affects the performance of the motor. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a novel high temperature resistant micro-motor structure in oil wells, so as to solve the problems raised in the above background technology. [0004] In order to achieve the above purpose, the present invention provides the following technical solutions: a novel oil well undergr...
Claims
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IPC IPC(8): H02K1/276H02K1/28H02K11/215H02K5/16
CPCH02K1/276H02K1/28H02K11/215H02K5/161H02K2211/03
Inventor 侯立东王海滨董治祥代子龙
Owner HELI TECH ENERGY CO LTD