Oil pumping unit protection device special for oil production engineering and using method of oil pumping unit protection device
A protection device and pumping unit technology, which is applied in the direction of mining fluid, earthwork drilling, wellbore/well components, etc., can solve the problems of unstable well pressure, increased wear of parts, stuck pumps, etc., and reduce sand content , prolong the service life, increase the effect of parts wear
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[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0039] Please refer to Figure 1-9 As shown, a special pumping unit protection device for oil production engineering includes a motor 14, a reducer 15, a support frame 1 and an upper joint 4. A movable beam 2 is rotatably connected to the top of the support frame 1, and one end of the movable beam 2 is fixed with a The donkey head 3, the donkey head 3 is fixed with the sucker rod 6 through the wire rope 5;
[0040] like Figure 7 As shown, the bottom end of the upper joint 4 of the present invention is communicated with an outer cylinder 7, and the bottom end of the outer cylinder 7 is provided with a fixed cylinder 44, the inner part of the outer cylinder 7 is provided with a pump cylinder 8, and the inside of the pump cylinder 8 slides with a plug Column 9, the bottom of the plunger 9 is provided with an oil inlet hole 10, and the bottom of the inner ...
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