Automatic oil-free submersible motor
An oil-submersible motor, oil-free technology, used in machines/engines, liquid variable-capacity machinery, electrical components, etc., can solve the problems of slow oiling process, low on-site construction efficiency, and take up a lot of time to prevent motor oil leakage. , The effect of reducing the amount of on-site work and improving the quality of work
Active Publication Date: 2016-08-24
BC P INC CHINA NAT PETROLEUM CORP +2
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Problems solved by technology
[0002] Ordinary submersible electric pump units need to re-inject motor oil into the submersible motor during the downhole process. Due to the narrow space inside the submersible motor, the oil injection process is very slow (if the oil injection speed is fast, the air in the motor cannot be fully discharged, which will affect Motor operation reliability), so the oil injection process will take up a lot of time when going downhole on site, resulting in low site construction efficiency
When the submersible electric pump unit is used in the alpine region, the low temperature causes the viscosity of the motor oil to increase, and the human body is not flexible in the cold environment, so the difficulty of oil injection operation is greatly increased
Method used
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[0012] The present invention will be further described below in conjunction with accompanying drawing:
[0013] Depend on figure 1 , figure 2 As shown in the figure, an automatic oil-free submersible motor includes the lower joint 1 of the upper motor, the lower shaft head 9 of the upper motor, the motor leads pass through the lower joint 1 of the upper motor, and a motor lead protection tube is provided outside the motor lead 4. A spline sleeve 14 is placed between the lower shaft head 9 of the upper section motor and the lower joint 1 of the upper section motor, wherein the upper end of the spline sleeve 14 is provided with an upper end O-ring 8, and the spline sleeve 14 is connected with the lower joint of the upper section motor. The upper end O-ring 8 seals between the shaft heads 9 . There is a gap between the outside of the spline sleeve 14 and the lower joint 1 of the upper motor, forming an annular cavity, which is filled with motor oil, which is called an annular...
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The invention relates to an automatic oiling-free submersible motor which mainly solves the problem that motor oil is required to be refilled into a submersible motor in a down-hole process of the existing electrical submersible pump unit. The automatic oiling-free submersible motor is characterized in that a spline housing (14) is arranged between an upper motor lower shaft head (9) and an upper motor lower connector (1); an upper end O-ring (8) is arranged between the interior of the spline housing (14) and the upper motor lower shaft head (9); a motor lead terminal locating block (15) is fixed at the lower part of the upper motor lower connector (1); a lower end O-ring (5) is arranged between the exterior of the lower end of the spline housing (14) and the motor lead terminal locating block (15); a plunger (11) is arranged in the lower end of the upper motor lower shaft head (9); and the lower part of the plunger (11) is sealed with a compression ring (13) outside the plunger (11). The automatic oiling-free submersible motor is oiling-free in the down-hole process, can greatly reduce the field operation quantity, and can improve the operation quality.
Description
technical field [0001] The invention relates to the field of an oil field lifting equipment submersible electric pump, in particular to an automatic oil-free submersible motor. Background technique [0002] Ordinary submersible electric pump units need to re-inject motor oil into the submersible motor during the downhole process. Due to the narrow space inside the submersible motor, the oil injection process is very slow (if the oil injection speed is fast, the air in the motor cannot be fully discharged, which will affect Motor operation reliability), so the oil injection process will take a lot of time when the site goes down to the well, resulting in low site construction efficiency. When the submersible electric pump unit is used in the alpine region, the low temperature causes the viscosity of the motor oil to increase, and the human body is not flexible in the cold environment, so the difficulty of oil injection operation is greatly increased. Contents of the inventi...
Claims
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IPC IPC(8): H02K7/00F04B17/03
Inventor 李聚乐陈福民丁学光姜彦于洪英李华成朴雪峰庞玉霞
Owner BC P INC CHINA NAT PETROLEUM CORP