An all-metal downhole planetary gear motor
A planetary gear and planetary gear train technology, applied in the field of motors, can solve the problems of small output torque, high drilling speed and high cost of turbo drilling tools, and achieve the effects of uniform radial force, reduction of lateral vibration, and reduction of leakage.
Active Publication Date: 2021-12-21
CHINA UNIV OF GEOSCIENCES (BEIJING)
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Problems solved by technology
[0003] At present, the power drilling tools with better high temperature resistance are turbo drilling tools and all-metal screw drilling tools. However, due to the disadvantages of high drilling speed and low output torque of turbo drilling tools, all-metal screw drilling tools have difficulties in stator processing, High cost, and disadvantages such as non-concentric structure is prone to lateral vibration, which limits their application
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[0038] The following is attached Figure 1-6 The application is described in further detail.
[0039] The embodiment of the present application discloses an all-metal downhole planetary gear motor. refer to figure 1 and figure 2 , The planetary gear motor is made of all-metal material, and does not contain parts that are not resistant to high temperatures such as rubber, which makes the planetary gear motor have a high temperature resistance and greatly prolongs its service life. The planetary gear motor includes a housing 1, the housing 1 is rotatably connected with the front distribution plate 2, the housing 1 is rotatably connected with the rear distribution plate 3, and the housing 1 is detachably connected with the planetary gear system 5, the planetary gear system 5 is located between the front distribution plate 2 and the rear distribution plate 3 and drives the front distribution plate 2 and the rear distribution plate 3 to rotate, and an output shaft 6 is integral...
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This application relates to the field of motors, and in particular to an all-metal downhole planetary gear motor, which includes a housing, a front valve plate and a rear valve plate installed in the housing, and a planet set between the front valve plate and the rear valve plate Gear train: the fixed block is fixed between the front valve plate and the rear valve plate, and the fixed block is located in the space formed by the ring gear, the planetary gear and the sun gear of the planetary gear train. For the flow channel for liquid flow, the front distribution plate is provided with a liquid inlet for high-pressure liquid to flow to one end of the flow channel, and the rear distribution plate is provided with a liquid outlet for liquid to flow out from the end of the flow channel away from the liquid inlet. Two liquid inlets and two liquid outlets at the flow channels on both sides of a planetary wheel are alternately arranged to drive the planetary wheel to rotate. The application has the ability to meet the needs of low drilling speed and high output torque for downhole drilling, and the planetary gear is balanced in force during operation, and can provide stability when the motor is working.
Description
technical field [0001] The present application relates to the field of motors, in particular to an all-metal downhole planetary gear motor. Background technique [0002] In recent years, with the development of the drilling industry, in deep wells, ultra-deep wells and high-temperature geothermal wells, downhole dynamic drilling tools with higher energy utilization are more and more used. With the increase of downhole temperature, the rubber and other non-high-temperature-resistant parts contained in the power drilling tool seriously affect the performance and service life of the downhole power drilling tool, so choose a high-temperature-resistant power with low drilling speed and high output torque Drilling tools are particularly important. [0003] At present, the power drilling tools with better high temperature resistance are turbo drilling tools and all-metal screw drilling tools. However, due to the disadvantages of high drilling speed and low output torque of turbo d...
Claims
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IPC IPC(8): F03C2/08
CPCF03C2/08
Inventor 王瑜张伟孔令镕罗志华周琴
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)