Thrust short circuit of submersible electric screw pump
An electric screw and thrust technology, applied in the direction of rotary piston type/swing piston type pump components, drill rods, pump components, etc., can solve the problem of high dimensional machining accuracy requirements of parts, uneven distribution of bearing capacity, and small bearing capacity. and other problems, to achieve the effect of large bearing capacity, long service life and convenient maintenance
Active Publication Date: 2017-11-24
胜利油田胜利泵业有限责任公司
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Problems solved by technology
The screw pump with this structure is short-circuited in thrust and plays a role in oil exploitation, but it also has the following shortcomings or deficiencies: ① uneven distribution of bearing capacity; ② high precision requirements for parts and components, and high cost; Small capacity; ④ short working life
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[0015] refer to Figure 1-Figure 2 , a submersible electric screw pump thrust shorting, including thrust short joint part 1, head seal ring 3, housing 17, thrust shorting base 18, base sealing ring 20. The thrust short joint part 1 is connected with the housing 17 and the thrust short joint base 18 in sequence, the thrust short joint part 1 is equipped with the head seal ring 3, the thrust short joint base 18 is equipped with the base seal ring 20, and the shaft 16 is installed in the center of the housing 17 and the thrust shorting base 18, and the shaft 16 is sequentially connected with a rolling bearing 2, two half-rings 4, an upper pressure plate 5, an upper bush 6, an interstage bush 7, and a pressure plate 8. Thrust bearing 9, butterfly spring 10, shaft sleeve 11, bearing support assembly 12, radial bearing 13, thrust washer 14, compression tube 15 and retaining ring 23, and a long strip is installed in the middle of the shaft 16 Shaped square key 24, the upper and lowe...
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A thrust shorting of a submersible electric screw pump comprises a thrust short joint, a head sealing ring, a shell, a thrust shorting base, and a base sealing ring. The thrust short joint part is connected with the housing and the thrust short joint base in sequence, the thrust short joint is equipped with a head seal ring, the thrust short joint base is equipped with a base seal ring, and the shaft is installed on the shell and the thrust short joint base. The center of the thrust short-circuit base, the rolling bearing, two half-rings, the upper pressure plate, the upper bush, the interstage bush, the pressure plate, the thrust bearing, the butterfly spring, the bushing and the bearing support are installed and connected in sequence on the shaft. Seat assembly, radial bearing, thrust washer, compression tube and retaining ring, a long square key is installed in the middle of the shaft, and a variable-diameter spline sleeve assembly is connected to the upper and lower ends. The invention adopts a parallel structure of multi-stage thrust bearings, and a butterfly spring is installed on the lower part of the thrust bearings, which has the characteristics of uniform load distribution, large bearing capacity, simple structure, high reliability, etc., and can be widely used in various types of electric submersible screws pump unit.
Description
technical field [0001] The invention relates to an oil mining mechanical oil extraction submersible electric screw pump, in particular to a thrust shorting connection of an oil submersible electric screw pump. Background technique [0002] The traditional submersible electric screw pump has a thrust short circuit, and its structure is a rigid support type. The purpose is to balance the axial force from the screw pump and transmit the power to the screw pump. The screw pump with this structure is short-circuited in thrust and plays a role in oil exploitation, but it also has the following shortcomings or deficiencies: ① uneven distribution of bearing capacity; ② high precision requirements for parts and components, and high cost; Small capacity; ④ short working life. Contents of the invention [0003] The purpose of the present invention is to provide a thrust short circuit of a submersible electric screw pump, which adopts a structure in which multi-stage thrust bearing g...
Claims
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IPC IPC(8): E21B17/02F04C15/00
Inventor 李飞明魏永波陈建雄邵雷周瑞华姜立华
Owner 胜利油田胜利泵业有限责任公司