CN203796533U - Anti-scaling oil pump - Google Patents

Anti-scaling oil pump Download PDF

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Publication number
CN203796533U
CN203796533U CN201420210191.XU CN201420210191U CN203796533U CN 203796533 U CN203796533 U CN 203796533U CN 201420210191 U CN201420210191 U CN 201420210191U CN 203796533 U CN203796533 U CN 203796533U
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China
Prior art keywords
valve
plunger
pump barrel
pump cylinder
standing
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Active
Application number
CN201420210191.XU
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Chinese (zh)
Inventor
王海峰
刘连伟
汤宪民
邵亚龙
姚秋红
王颖
王文生
卢丽
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Tieling Machinery & Equipment Manufacturing Co Ltd
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Tieling Machinery & Equipment Manufacturing Co Ltd
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Priority to CN201420210191.XU priority Critical patent/CN203796533U/en
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Abstract

The utility model discloses an anti-scaling oil pump which comprises a pump cylinder. A plunger assembly is disposed in the pump cylinder. The plunger assembly comprises a plunger, an upper travelling valve and a lower traveling valve, wherein the upper and lower travelling valves are provided with upper and lower travelling valve balls and upper and lower travelling valve seats. An upper connector is disposed at the upper end of the pump cylinder. A standing valve assembly is connected to the lower end of the pump cylinder. The standing valve assembly comprises a standing valve cover, a standing valve ball and a standing valve seat. The standing valve seat is connected with a standing valve lower connector. The plunger is a long plunger. The pump cylinder is a short pump cylinder. The plunger is longer than the pump cylinder. The upper and lower ends of the pump cylinder are connected with the upper connector and the standing valve assembly through upper and lower outer sleeves. By the structure, the plunger can slide up and down in the pump cylinder and the spaces of the upper and lower outer sleeves along the axis of the pump cylinder, the plunger slides up and down in a reciprocating manner to scrape scale on the inner wall of the pump cylinder, residual scale on the inner wall of the pump cylinder is prevented, and the situation that a piston gets stuck in the pump cylinder due to scaling of the inner wall of the pump cylinder is avoided.

Description

Anti-scaling oil-well pump
Technical field
The oil well pump of using from underground extraction oil when the utility model relates to a kind of oil extraction in oil field, especially relates to a kind of anti-scaling oil-well pump.
Background technique
When oil extraction in oil field from the oil well pump of underground extraction oil, in structure, mainly comprise pump barrel, in pump barrel, there is plunger piston assembly, plunger piston assembly comprises plunger and upper, lower travelling valve, on, on lower travelling valve has, lower travelling valve ball and upper, lower travelling valve seat, described pump barrel upper end has upper connection, pump barrel lower end is connected with standing valve assembly, standing valve assembly comprises connected successively standing valve cover, fixed valve ball and fixed valve base, fixed valve base is connected with standing valve lower contact, during use, oil well pump is the lower end that is connected in oil well inner oil tube, the lift power of plunger by the sucker rod that is connected with ground pumping unit and self gravitation in pump barrel on, lower to-and-fro motion, because having tight coordinating between the outer wall of plunger and the internal face of pump barrel, upper at plunger, lower two ends are connected with respectively, lower travelling valve, lower end at pump barrel is connected with standing valve, so plunger in pump barrel on, during lower to-and-fro motion, the oil of oil well bottom is retracted to ground off and on by the oil inlet hole of sand-proof pipe in well casing.
Along with going deep into of oil field development, oil well comprehensive water cut constantly rises, after some Oilfield using tri compound notes gather simultaneously, oil-well strata water salinity is generally higher, pump barrel encrustation phenomenon is day by day serious, when fouling is serious, can cause holddown phenomenon, has had a strong impact on oily well yield.
Model utility content
The technical problems to be solved in the utility model be to provide a kind of when extracting downhole crude the pump barrel inwall non flouling behaviour of oil well pump, and then can not cause the anti-scaling oil-well pump of the seizure of piston that causes because of the pump barrel encrustation holddown phenomenon in pump barrel.
For solving the problems of the technologies described above, the utility model anti-scaling oil-well pump, comprise pump barrel, in pump barrel, there is plunger piston assembly, plunger piston assembly comprises plunger and upper, lower travelling valve, on, on lower travelling valve has, lower travelling valve ball, on, lower travelling valve seat and going out, oil-feed valve bonnet, described upper travelling valve is connected with delivery connection, lower travelling valve is connected with pipe close, described pump barrel upper end has upper connection, pump barrel lower end is connected with standing valve assembly, standing valve assembly comprises connected successively standing valve cover, fixed valve ball and fixed valve base, fixed valve base is connected with standing valve lower contact, described plunger is long-plunger, described pump barrel is short pump barrel, plunger has the length longer than pump barrel, described pump barrel upper, lower two ends are by upper, lower outer sleeve is connected with standing valve assembly with described upper connection.
Adopt the anti-scaling oil-well pump of said structure, because plunger has the length longer than pump barrel, the upper/lower terminal of described pump barrel is connected with standing valve assembly with described upper connection by upper and lower outer sleeve, therefore plunger can be along the upper and lower slip in pump barrel and upper and lower outer sleeve space of pump barrel axis, the reciprocal upper and lower slip of plunger can be wiped the dirt on pump barrel inwall off, can not make pump barrel inwall retain dirt, and then can not cause the seizure of piston that causes because of the pump barrel encrustation holddown phenomenon in pump barrel.
As further improvement of the utility model, described upper and lower outer sleeve, pump barrel, plunger, go out, the inwall of oil-feed valve bonnet, upper delivery connection, pipe close, upper connection, standing valve cover and standing valve lower contact has the nickel phosphorus layer that adopts chemical method to be coated with; The described upper and lower valve ball that moves about, the upper and lower valve seat that moves about, fixed valve ball and fixed valve base are made by cobalt chromium tungsten non-magnetic material.The nickel phosphorus layer being coated with in said structure can make above-mentioned member have good scale-preventing performance; The upper and lower valve ball that moves about, the upper and lower valve seat that moves about, fixed valve ball and fixed valve base are made and can be prevented accumulation of impurities fouling by cobalt chromium tungsten non-magnetic material.
As of the present utility model, further improve, between described pump barrel lower end and standing valve assembly, be also provided with the second standing valve assembly.The utility model adopts double standing valve structure, can effectively prevent that leakage, thorn from leaking phenomenon, improved pump efficiency, extended working life of the present utility model.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is the main cross-sectional schematic of the utility model anti-scaling oil-well pump.
Fig. 2 is divided into the zoomed-in view after two-part from being convenient to see clearly the angle of each structure of the utility model anti-scaling oil-well pump along the line of fracture A-A bundle of lines Fig. 1 Fig. 1.
Embodiment
Referring to Fig. 1, Fig. 2, anti-scaling oil-well pump of the present utility model, comprise pump barrel 1, in pump barrel 1, there is plunger piston assembly 2, plunger piston assembly 2 comprises plunger 21 and upper, lower travelling valve 22, 23, on, lower travelling valve 22, 23 have on, lower travelling valve ball 24, 25, on, lower travelling valve seat 26, 27 and go out, oil-feed valve bonnet 28, 29, described upper travelling valve 22 is connected with delivery connection 9, lower travelling valve 23 is connected with pipe close 10, described pump barrel upper end has upper connection 3, pump barrel lower end is connected with standing valve assembly 4, standing valve assembly 4 comprises connected successively standing valve cover 41, fixed valve ball 42 and fixed valve base 43, fixed valve base 43 is connected with standing valve lower contact 44, described plunger 21 is long-plunger, described pump barrel 1 is short pump barrel, plunger 21 has the length longer than pump barrel 1, described pump barrel 1 upper, lower two ends are by upper, lower outer sleeve 5, 6 are connected with standing valve assembly 4 with described upper connection 3.
Described upper and lower outer sleeve 5,6, pump barrel 1, plunger 21, go out, the inwall of oil-feed valve bonnet 28,29, upper delivery connection 9, pipe close 10, upper connection 3, standing valve cover 41 and standing valve lower contact 44 has the nickel phosphorus layer 7 that adopts chemical method to be coated with; The described upper and lower valve ball 24,25 that moves about, upper and lower valve seat 26,27, fixed valve ball 42 and the fixed valve base 43 of moving about made by cobalt chromium tungsten non-magnetic material.
Between described pump barrel lower end and standing valve assembly 4, be also provided with the second standing valve assembly 8.

Claims (3)

1. an anti-scaling oil-well pump, comprises pump barrel (1), has plunger piston assembly (2) in pump barrel (1), and plunger piston assembly (2) comprises plunger (21) and upper, lower travelling valve (22, 23), lower travelling valve (22, 23) on having, lower travelling valve ball (24, 25), on, lower travelling valve seat (26, 27) and go out, oil-feed valve bonnet (28, 29), described upper travelling valve (22) is connected with delivery connection (9), and lower travelling valve (23) is connected with pipe close (10), and described pump barrel upper end has upper connection (3), pump barrel lower end is connected with standing valve assembly (4), and standing valve assembly (4) comprises connected successively standing valve cover (41), fixed valve ball (42) and fixed valve base (43), fixed valve base (43) is connected with standing valve lower contact (44), it is characterized in that: described plunger (21) is long-plunger, and described pump barrel (1) is short pump barrel, plunger (21) has the length longer than pump barrel (1), described pump barrel (1) upper, lower two ends are by upper, lower outer sleeve (5, 6) be connected with standing valve assembly (4) with described upper connection (3).
2. anti-scaling oil-well pump as claimed in claim 1, is characterized in that: described upper and lower outer sleeve (5,6), pump barrel (1), plunger (21), go out, the inwall of oil-feed valve bonnet (28,29), upper delivery connection (9), pipe close (10), upper connection (3), standing valve cover (41) and standing valve lower contact (44) has the nickel phosphorus layer (7) that adopts chemical method to be coated with; The described upper and lower valve ball that moves about (24,25), the upper and lower valve seat that moves about (26,27), fixed valve ball (42) and fixed valve base (43) are made by cobalt chromium tungsten non-magnetic material.
3. anti-scaling oil-well pump as claimed in claim 1 or 2, is characterized in that: between described pump barrel lower end and standing valve assembly (4), be also provided with the second standing valve assembly (8).
CN201420210191.XU 2014-04-28 2014-04-28 Anti-scaling oil pump Active CN203796533U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420210191.XU CN203796533U (en) 2014-04-28 2014-04-28 Anti-scaling oil pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420210191.XU CN203796533U (en) 2014-04-28 2014-04-28 Anti-scaling oil pump

Publications (1)

Publication Number Publication Date
CN203796533U true CN203796533U (en) 2014-08-27

Family

ID=51378750

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420210191.XU Active CN203796533U (en) 2014-04-28 2014-04-28 Anti-scaling oil pump

Country Status (1)

Country Link
CN (1) CN203796533U (en)

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