CN205779594U - Suction pump - Google Patents

Suction pump Download PDF

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Publication number
CN205779594U
CN205779594U CN201620463229.3U CN201620463229U CN205779594U CN 205779594 U CN205779594 U CN 205779594U CN 201620463229 U CN201620463229 U CN 201620463229U CN 205779594 U CN205779594 U CN 205779594U
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China
Prior art keywords
oil
pump barrel
pump
fixed
urceolus
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CN201620463229.3U
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Chinese (zh)
Inventor
胡英才
刘若虚
王学宏
杨康敏
杨军虎
苗玉礼
李鹏
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China Petroleum and Chemical Corp
Petroleum Engineering Technology Research Institute of Sinopec Henan Oilfield Branch Co
Original Assignee
China Petroleum and Chemical Corp
Petroleum Engineering Technology Research Institute of Sinopec Henan Oilfield Branch Co
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Priority to CN201620463229.3U priority Critical patent/CN205779594U/en
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Publication of CN205779594U publication Critical patent/CN205779594U/en
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Abstract

This utility model relates to a kind of oil well pump, is specifically related to a kind of suction pump.Suction pump includes pump barrel and lower pump barrel, in upper pump barrel and lower pump barrel, slidable fit has upper plug and lower plunger respectively, delivery valve it is provided with between upper plug and lower plunger, the lower section of upper pump barrel is provided with connection urceolus, connect urceolus and be enclosed within the outside of lower pump barrel, connect and be provided with inlet valve between urceolus and lower pump barrel, below inlet valve, be provided with vertically extending main oil-in.In this utility model, inlet valve is arranged between connection urceolus and lower pump barrel, and main oil-in is positioned at below inlet valve and extends up and down, compared with existing inlet valve offset structure, on the one hand, during oil-feed, crude oil turns to without wide-angle and just can enter in annulus by inlet valve, and flow passage structure is simple, simultaneously, space in well can be made full use of, expand the flow area at oil-in, thus reduce oil-feed resistance, improve pump efficiency;On the other hand, it is possible to avoid oil well pump to tilt, it is ensured that lifting effect.

Description

Suction pump
Technical field
This utility model relates to a kind of oil well pump, is specifically related to a kind of suction pump.
Background technology
At present, the reaction type suction pump with hydraulic feedback power is generally used in thick oil thermal extraction, hydraulic feedback suction pump uses the form of size series connection of pumps, and in down stroke, in oil pipe, head of liquid is applied on pump plunger, i.e. helps sucker rod to overcome viscous crude resistance descending by hydraulic feedback power.
nullNotification number is CN200996374Y、The day for announcing is that in December, 2007 Chinese patent document of 26 days discloses a kind of oil well pump,Oil well pump includes pump barrel and lower pump barrel,In upper pump barrel and lower pump barrel, slidable fit has upper plug and lower plunger respectively,The lower end of upper plug is provided with delivery valve,The two ends up and down of lower plunger are all closed,Annulus is formed between pump barrel and plunger,The outside of upper pump barrel is provided with eccentric joint,Eccentric joint is provided with inlet valve,The lower section of inlet valve is provided with oil-in,The axis of oil-in is parallel to lower plunger,Crude oil will occur 90 ° turn to could enter in annulus after entering oil-in,Simultaneously because oil-in is located at the outside of pump barrel,Limited by space in well,Oil-in cannot expand further,The version of this runner is complicated and flow area is less,The problem that when causing oil-feed, liquid flowing resistance is bigger.Further, since inlet valve biasing, easily cause the inlet valve that suction pump biased when underground work and pave and be in heeling condition, affect the lifting effect of pump.
Utility model content
The purpose of this utility model is to provide a kind of suction pump that can reduce oil-feed resistance.
For achieving the above object, the technical scheme of this utility model suction pump is: suction pump includes pump barrel and lower pump barrel, in upper pump barrel and lower pump barrel, slidable fit has upper plug and lower plunger respectively, delivery valve it is provided with between upper plug and lower plunger, the lower section of upper pump barrel is provided with connection urceolus, connect urceolus and be enclosed within the outside of lower pump barrel, connect and be provided with inlet valve between urceolus and lower pump barrel, below inlet valve, be provided with vertically extending main oil-in.
Connecting urceolus and be provided with the side oil-in connected with main oil-in, side oil-in is positioned at the lower section of inlet valve.
Connecting upper connecting cylinder, adapter sleeve and lower connecting cylinder that urceolus includes being sequentially connected with from top to bottom, the internal diameter of upper connecting cylinder is more than lower connecting cylinder, and adapter sleeve is tapered sleeve structure, and described side oil-in is located on adapter sleeve, and side oil-in ecto-entad is obliquely installed from bottom to top.
Described inlet valve is for opening and closing by force standing valve.
The strong standing valve that opens and closes includes fixed spool and the fixed valve base of block cooperation setting up and down, and fixed valve base is fixed on connection urceolus, and fixed spool is fixed on lower pump barrel, lower frictional fit between pump barrel and lower plunger.
Being fixed with standing valve cover in connecting urceolus, standing valve cover is positioned at the top of fixed spool, and standing valve cover included that oil passage, standing valve cover moved up and down the position limiting structure of scope with fixed valve base formation for limiting fixed spool.
Described standing valve cover includes fixed part, connecting portion and the stop section being sequentially connected with from top to bottom, fixed part and stop section are tube-in-tube structure, stop section is sleeved on outside lower plunger, the lower surface of stop section coordinates with the upper surface block of lower pump barrel, connecting portion is cone cylinder structure, and described oil passage of crossing is opened on connecting portion.
The top of the periphery of lower pump barrel is provided with hierarchic structure, and described fixed spool is ring set structure, and fixed spool is threaded connection and is fixed in the path section of hierarchic structure and by the cascaded surface block of hierarchic structure.
Fixed spool be arranged over the lock sleeve for being locked on lower pump barrel by fixed spool pushing tow.
The lower end of lower pump barrel is provided with supporting positive cover, and supporting positive cover is provided with channel-shaped oil inlet passage that is that run through up and down and that have opening towards supporting positive cover periphery, and oil inlet passage forms described main oil-in.
The beneficial effects of the utility model are: in this utility model, inlet valve is arranged between connection urceolus and lower pump barrel, and main oil-in is positioned at below inlet valve and extends up and down, compared with existing inlet valve offset structure, on the one hand, during oil-feed, crude oil turns to without wide-angle and just can enter in annulus by inlet valve, and flow passage structure is simple, simultaneously, space in well can be made full use of, expand at oil-in flow area, thus reduce oil-feed resistance, improve pump efficiency;On the other hand, it is possible to avoid oil well pump to tilt, it is ensured that lifting effect.
Further, connect urceolus and be provided with side oil-in, it is possible to improve flow area further.Side oil-in ecto-entad is obliquely installed from bottom to top, it is ensured that oil-feed direction is substantially straight up, there is not turning to of larger angle so that the kinestate that liquid stream keeps up.
Further, inlet valve uses forced opening-closing formula structure, inlet valve is made to open and close in time, decrease the delayed of valve and miss the discharge capacity loss caused, relative to existing valve ball structure, it can be avoided that cause valve ball to open and close delayed and cause pump efficiency reduction and the setting leakage the most sternly caused and inefficacy because oil is thick, improve pump efficiency and the reliability of suction pump.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model suction pump.
Detailed description of the invention
Below in conjunction with the accompanying drawings embodiment of the present utility model is described further.
nullThe specific embodiment of suction pump of the present utility model,As shown in Figure 1,Suction pump includes pump barrel assembly and assembly for plunger,Pump barrel assembly includes the upper pump barrel 1 being coaxially disposed、Lower pump barrel 2 and connection urceolus 3,The internal diameter of upper pump barrel 1 is more than the internal diameter of lower pump barrel 2,Connect urceolus 3 and be positioned at the lower section of pump barrel 1,And it is enclosed within the outside of lower pump barrel 2,Assembly for plunger includes upper plug 4、Lower plunger 5 and the delivery valve between upper plug 4 and lower plunger 56,The external diameter of upper plug 4 is more than the external diameter of lower plunger 5,Delivery valve 6 includes floating valve ball and floating valve seat,Floating valve seat is provided with oil-out,The two ends up and down of lower plunger 5 are all closed,Upper pump barrel 1 and upper plug 4、Between lower pump barrel 2 and lower plunger 5, slipper seal coordinates respectively,Toroidal cavity is formed between pump barrel assembly and assembly for plunger,Upper plug 4 is provided with the oil discharge passage for being connected by oil-out with toroidal cavity,The upper end of upper pump barrel 1 is provided with the top connection 11 for connected pipes.
Connect upper connecting cylinder 31, adapter sleeve 32 and lower connecting cylinder 33 that urceolus 3 includes being sequentially connected with from top to bottom, the internal diameter of upper connecting cylinder 31 is more than lower connecting cylinder 33 and upper pump barrel 1, it is connected by up-small and down-big cone cylinder between upper pump barrel 1 with upper connecting cylinder 31, adapter sleeve 32 is up big and down small tapered sleeve structure, and the lower end of lower connecting cylinder 33 is provided with the lower contact 34 for connected pipes.Connect and be provided with inlet valve 7 between urceolus 3 and lower pump barrel 2, inlet valve 7 opens and closes by force standing valve for machinery, the strong standing valve that opens and closes includes fixed spool 71 and the fixed valve base 72 of block cooperation setting up and down, fixed valve base 72 is fixed on the adapter sleeve 32 connecting urceolus, fixed spool 71 is fixed on lower pump barrel 2, the top of the periphery of lower pump barrel 2 is provided with hierarchic structure, the path section of hierarchic structure is provided with external screw thread, fixed spool 71 is the ring set structure being provided with internal thread hole, fixed spool 71 is threaded connection and is fixed in the path section of hierarchic structure and by the cascaded surface block of hierarchic structure, lower pump barrel 2 is positioned at above fixed spool 71 and is installed with lock sleeve 8, lock sleeve 8 is for being locked at lower pump barrel 2 by fixed spool 71 pushing tow.It is fixed with standing valve cover 9 on the inwall of the upper connecting cylinder 31 connecting urceolus, standing valve cover 9 is positioned at the top of fixed spool 71, standing valve cover 9 includes the fixed part being sequentially connected with from top to bottom, connecting portion and stop section, fixed part and stop section are tube-in-tube structure, stop section is sleeved on outside lower plunger 5, stop section and lower plunger 5 matched in clearance, the lower surface of stop section coordinates with the upper surface block of lower pump barrel 2, connecting portion is cone cylinder structure, oil passage 91 was offered on connecting portion, interference fit between lower plunger 5 and lower pump barrel 2, lower plunger 5 drives lower pump barrel 2 and fixed spool thereon 71 to move up and down by frictional force, standing valve cover 9 moves up and down the position limiting structure of scope with fixed valve base 72 formation for limiting fixed spool 71.
The lower end of lower pump barrel 2 is fixedly connected with supporting positive cover 10, supporting positive cover 10 is slidedly assemblied in the lower connecting cylinder 33 connecting urceolus 3, supporting positive cover 10 is provided with channel-shaped oil inlet passage 101 that is multiple that run through up and down and that have opening towards supporting positive cover periphery, oil inlet passage 101 circumference is distributed on supporting positive cover 10, and all of oil inlet passage 101 forms main oil-in.Offering the side oil-in 321 that four inner sides connect with main oil-in on adapter sleeve 32, side oil-in 321 ecto-entad is obliquely installed from bottom to top, and main oil-in and side oil-in 321 are positioned at the lower section of inlet valve 7.
During upstroke, assembly for plunger moves up, delivery valve cuts out, the volume of the toroidal cavity between pump barrel assembly and assembly for plunger increases, and pressure reduces, and lower plunger drives lower pump barrel and fixed spool thereon to move up by frictional force, inlet valve is opened, well liquid is flowed into toroidal cavity by inlet valve from top to bottom from main oil-in and side oil-in, and fixed spool is moved upward to by block at standing valve cover, and lower plunger overcomes the frictional force between lower pump barrel to continue to move up.During down stroke, assembly for plunger moves down, lower plunger drives lower pump barrel and fixed spool thereon to be moved downward at fixed valve base by frictional force, inlet valve cuts out, lower plunger overcomes the frictional force between lower pump barrel to continue to move down, well liquid in toroidal cavity is expelled to oil pipe after being backed down by delivery valve, completes pumping process.
In other embodiments, the oil inlet passage on supporting positive cover can also be provided only with one, and oil inlet passage can also be cavernous structure.
In other embodiments, together with supporting positive cover can also be fixed on connection urceolus and be slidably fitted within lower plunger, it is also possible to be not provided with supporting positive cover, directly form vertically extending main oil-in between urceolus and lower pump barrel connecting.
In other embodiments, lower between pump barrel and lower plunger, can not be interference fit, the male-female engagement that less concaveconvex structure is formed can also be used, elastomeric material can also be used to make the cooperation face of at least one in lower plunger and lower pump barrel, meet and make can produce between lower pump barrel and lower plunger suitable frictional force, so that lower plunger can drive lower pump barrel to move, and lower plunger can overcome the requirement that frictional force continues to move to after lower pump barrel limited structure block.
In other embodiments, it is also possible to make lower pump barrel fix, fixed spool can be made to connect independent drive mechanism, it is possible to realize the forced opening-closing function of inlet valve.
In other embodiments, inlet valve can also use the float trap being capable of automatic open close.

Claims (10)

1. suction pump, including upper pump barrel and lower pump barrel, in upper pump barrel and lower pump barrel, slidable fit has upper plug and lower plunger respectively, delivery valve it is provided with between upper plug and lower plunger, it is characterized in that: the lower section of upper pump barrel is provided with connection urceolus, connect urceolus and be enclosed within the outside of lower pump barrel, connect and be provided with inlet valve between urceolus and lower pump barrel, below inlet valve, be provided with vertically extending main oil-in.
Suction pump the most according to claim 1, it is characterised in that: connecting urceolus and be provided with the side oil-in connected with main oil-in, side oil-in is positioned at the lower section of inlet valve.
Suction pump the most according to claim 2, it is characterized in that: connect upper connecting cylinder, adapter sleeve and lower connecting cylinder that urceolus includes being sequentially connected with from top to bottom, the internal diameter of upper connecting cylinder is more than lower connecting cylinder, adapter sleeve is tapered sleeve structure, described side oil-in is located on adapter sleeve, and side oil-in ecto-entad is obliquely installed from bottom to top.
4. according to the suction pump described in claim 1 or 2 or 3, it is characterised in that: described inlet valve is for opening and closing by force standing valve.
Suction pump the most according to claim 4, it is characterized in that: the strong standing valve that opens and closes includes fixed spool and the fixed valve base of block cooperation setting up and down, fixed valve base is fixed on connection urceolus, and fixed spool is fixed on lower pump barrel, lower frictional fit between pump barrel and lower plunger.
Suction pump the most according to claim 5, it is characterized in that: in connecting urceolus, be fixed with standing valve cover, standing valve cover is positioned at the top of fixed spool, and standing valve cover included that oil passage, standing valve cover moved up and down the position limiting structure of scope with fixed valve base formation for limiting fixed spool.
Suction pump the most according to claim 6, it is characterized in that: described standing valve cover includes fixed part, connecting portion and the stop section being sequentially connected with from top to bottom, fixed part and stop section are tube-in-tube structure, stop section is sleeved on outside lower plunger, the lower surface of stop section coordinates with the upper surface block of lower pump barrel, connecting portion is cone cylinder structure, and described oil passage of crossing is opened on connecting portion.
Suction pump the most according to claim 5, it is characterized in that: the top of the periphery of lower pump barrel is provided with hierarchic structure, described fixed spool is ring set structure, and fixed spool is threaded connection and is fixed in the path section of hierarchic structure and by the cascaded surface block of hierarchic structure.
Suction pump the most according to claim 8, it is characterised in that: fixed spool be arranged over the lock sleeve for being locked on lower pump barrel by fixed spool pushing tow.
Suction pump the most according to claim 1, it is characterised in that: the lower end of lower pump barrel is provided with supporting positive cover, and supporting positive cover is provided with channel-shaped oil inlet passage that is that run through up and down and that have opening towards supporting positive cover periphery, and oil inlet passage forms described main oil-in.
CN201620463229.3U 2016-05-20 2016-05-20 Suction pump Active CN205779594U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620463229.3U CN205779594U (en) 2016-05-20 2016-05-20 Suction pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620463229.3U CN205779594U (en) 2016-05-20 2016-05-20 Suction pump

Publications (1)

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CN205779594U true CN205779594U (en) 2016-12-07

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Application Number Title Priority Date Filing Date
CN201620463229.3U Active CN205779594U (en) 2016-05-20 2016-05-20 Suction pump

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109209846A (en) * 2018-09-07 2019-01-15 中国石油化工股份有限公司 A kind of super―heavy oil sand-preventing pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109209846A (en) * 2018-09-07 2019-01-15 中国石油化工股份有限公司 A kind of super―heavy oil sand-preventing pump

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