CN2367796Y - Double-valve combined-tube type oil pump - Google Patents

Double-valve combined-tube type oil pump Download PDF

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Publication number
CN2367796Y
CN2367796Y CN 99226363 CN99226363U CN2367796Y CN 2367796 Y CN2367796 Y CN 2367796Y CN 99226363 CN99226363 CN 99226363 CN 99226363 U CN99226363 U CN 99226363U CN 2367796 Y CN2367796 Y CN 2367796Y
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CN
China
Prior art keywords
oil
piston
small piston
valve
valve cover
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 99226363
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Chinese (zh)
Inventor
何军
陈小雄
何再成
Original Assignee
何军
陈小雄
何再成
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 何军, 陈小雄, 何再成 filed Critical 何军
Priority to CN 99226363 priority Critical patent/CN2367796Y/en
Application granted granted Critical
Publication of CN2367796Y publication Critical patent/CN2367796Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a double-valve combined pipe type oil pump for oil exploitation. A sliding piston and a fixing valve cover which is arranged below the sliding piston are arranged in an oil pumping pipeline of the utility model. A steel ball is arranged in the valve cover on the sliding piston, and a lower disc of the steel ball is provided with a sealing cylinder sleeve. A hollow small piston which can be moved up and down is inlaid into the sealing cylinder sleeve, and the upper end surface of the hollow small piston is provided with a ball valve seat. The middle of the hollow small piston is provided with a convex position limiting step, and an oil inlet channel is arranged below the hollow small piston. A disk-shaped valve and an annular lower valve seat are arranged below the oil inlet channel, and the interior structure of the fixing valve cover which is arranged below the annular lower valve seat is similar to the structure of the sliding piston. The small piston of the utility model is vertically moved up and down in the guiding sealing cylinder sleeve. The stability is good, and the sealing performance and the oil pumping efficiency of the oil pump are improved.

Description

Bivalve assembled tube type oil well pump
The utility model relates to the tubing pump that a kind of oil field machinery oil is used, and relates in particular to a kind of bivalve assembled tube type oil well pump.
In the prior art, the oil field machinery oil pump that is used for petroleum production generally adopts three valve tubing pumps, and its structure comprises working barrel, working barrel liner steel bushing, and they constitute pumping pipelines.The piston that moves about that is complementary with the steel bushing internal diameter is arranged in the pipeline, and the piston top side that moves about has oil outlet, and oil outlet and pumping pipelines communicate.Move about piston head and sucker rod joins.The lift on sucker rod and ground links to each other.Moving about has upper and lower two steel balls in the piston, and respectively there is the ring-type ball seat two steel balls belows.Move about the below of piston by the valve of being made up of the steel ball of ring-type ball seat and ball seat top, above the steel ball fixed disc is arranged, oil through is arranged on the disk.When the oil suction of oil well pump piston down stroke, crude oil adds the flowing pressure of rod weight greater than crude oil in the oil reservoir in the pipeline, and the steel ball of fixed disc below is located on thereunder the ring-type ball seat by the surface pressure effect, and following valve is closed.The former oil pressure that moves about between piston and the following valve rises, and upwards backs down two steel balls of two ring-type ball seat tops in the piston that moves about, and crude oil upwards pours in the pumping pipelines.When moving about the piston upstroke, moving about, two steel balls are located on the annular ball seat downwards respectively in the piston, the piston that moves about is closed, move about and form local space between piston and the standing valve, pressure is less than the pressure of in-place oil, in-place oil backs down the steel ball on the standing valve ring-type ring seat, and standing valve is opened, and in-place oil enters in the pump.So continuous working in reciprocating mode forms oil pumping process.
The standing valve of three valve formula oil well pumps is single ball sealing, causes crude oil leakage easily.Generally speaking, in two steel balls in the piston that moves about, last ball seals, and following ball is inoperative, in fact still single ball sealing, and sealability is relatively poor, easily causes crude oil leakage, so pump efficiency is not high.
Claimant of the present utility model has proposed a kind of good seal performance in Chinese patent ZL96222139.2, ball valve that pumping efficiency is high and moushroom valve connecting pipe type oil well pump, its composition comprise the fixed piston of move about piston and below thereof in the pumping pipelines.The piston that moves about is formed and is comprised the valve cover, oil through is arranged on the disk on it, steel ball is arranged in the case, steel ball below has in the lower disc circular hole that is embedded in case can upper and lower mobile hollow small piston, its upper-end surface is a ball valve seat, the centre is the convex limited step, and there is an oil-feed duct its below, and the below is plate valve and ring-type lower valve base thereof.The structure of fixed piston is similar with the piston that moves about.This model utility has the same characteristics of closing together with bivalve, good seal performance, the pumping efficiency height of opening of bivalve in the upper and lower piston.But this valve exists the upper and lower mobile unsettled defective of the cylinder type hollow small piston that is embedded with in the lower disc circular hole of valve cover, small piston is disalignment sometimes, be oblique line directions and move, cause the steel ball and the blow-by of small piston upper-end surface of small piston top, cause crude oil leakage.After operating time was long, small piston cylindrical outer surface and the easy to wear and damage of internal surface of going up valve cover lower disc circular hole also can cause crude oil leakage, reduce pumping efficiency.In addition, because the last valve cover of move about piston and fixed piston directly is connected with pumping pipelines, therefore installation and maintenance dismounting are inconvenient.
The purpose of this utility model provides that a kind of sealability is better, pumping efficiency is high, in the upper and lower easily piston of installation and removal ball valve and moushroom valve at work bivalve with open and bivalve with the bivalve assembled tube type oil well pump that closes.
The utility model is to realize like this, the bivalve assembled tube type oil well pump that this oil field machinery oil is used comprises working barrel, working barrel liner cylinder sleeve, constitute pumping pipelines, the piston that moves about that is complementary with the cylinder sleeve internal diameter is arranged in the pipeline, the piston top side that moves about has oil outlet, and move about piston head and sucker rod join, and the lift on sucker rod and ground links to each other.The cylindrical valve cover of going up is arranged at the piston top of moving about, on the last disk of last valve cover oil through is arranged, oil through communicates with the oil pick-up tube on the piston top of moving about, in the inner chamber of last valve cover steel ball is arranged, be characterized in: the sealing cylinder sleeve upward is installed between the step of the special connecting sleeve of the lower disc of valve cover and bottom, be embedded with and go up in the sealing cylinder sleeve, mobile down cylindrical small piston, circular oil pipe is arranged in the middle of the small piston, the small piston top end is a ball valve seat, there is the cylindrical limited step of projection at the small piston middle part, and the small piston cylinder side of limited step below is other to have oil inlet hole, and it communicates with oil pipe, the small piston below is a plate valve, and its below is the ring-type lower valve base.Connect with special connecting sleeve between ring-type lower valve base and the last valve cover.The connecting tube that is fixed on the pumping pipelines tube wall is being arranged below the ring-type lower valve base, and the connecting tube below is connected with the standing valve cover.On the disk oil through is arranged on the standing valve cover, oil through communicates with the pumping pipelines on top through connecting tube, the piston that moves about.In the inner chamber of standing valve cover steel ball is arranged.The sealing cylinder sleeve is installed between the step of the lower disc of standing valve cover and the special connecting sleeve of bottom, sealing is embedded with in the cylinder sleeve can upper and lower mobile cylindrical small piston, circular oil pipe is arranged in the middle of the small piston, the small piston top end is a ball valve seat, there is the cylindrical limited step of projection at the small piston middle part, the cylinder side of limited step below is other to have oil inlet hole, and it communicates with oil pipe.The small piston below is a plate valve, and its below is the ring-type lower valve base.Connect ring-type lower valve base below union tail between ring-type lower valve base and the standing valve cover with special connecting sleeve.Its working principle is: when moving about during the oil suction of piston down stroke of bivalve assembled tube type oil well pump, the piston that moves about moves down, crude oil adds the flowing pressure of rod weight greater than crude oil in the oil reservoir in the pipeline, steel ball seat in the standing valve cover is enclosed on the ball valve seat of small piston oil pipe outlet, simultaneously, small piston is vertically descending in the sealing cylinder sleeve, and the plate-like valve seat of small piston bottom is enclosed on the ring-type lower valve base, and two valves cut out simultaneously in the standing valve cover.At this moment, the former oil pressure that moves about between piston and the standing valve cover rises, back down the plate valve on the annular lower valve base of the piston that moves about, small piston moves in the sealing cylinder sleeve vertically upward, because limited step is stuck in special connecting sleeve inner chamber step lower end surface, small piston stops to move, and crude oil backs down steel ball on the mouth of pipe ball valve seat through the small piston oil pipe, two valves that move about in the piston are opened simultaneously, and the oil outlet of crude oil on last valve cover pours in the pumping pipelines.Otherwise, when oil well pump moves about the piston upstroke, the steel ball in the piston of moving about is subjected to that former oil pressure effect seat is enclosed in the outlet of small piston oil pipe in the oil pick-up tube, small piston is vertically descending in the sealing cylinder sleeve, small piston bottom plate-like valve seat is encapsulated on the ring-type lower valve base, and two valves cut out simultaneously in the piston that moves about.Move about and form the space between piston and the standing valve cover, pressure between them is less than in-place oil pressure, the formation oil tail pipe of flowing through backs down plate valve on the annular lower valve base, make the small piston pan-up in the sealing cylinder sleeve in the standing valve cover, limited step is stuck in the step lower end surface of special connecting sleeve inner chamber, oil stream backs down the top steel ball from the small piston filler opening through the small piston oil pipe, two valves in the standing valve cover are opened simultaneously, in-place oil enters in the pump, fills up the space of moving about between piston and the standing valve cover.Like this, constantly working in reciprocating mode forms oil pumping process.The sealing steel bushing is installed between the lower disc of last valve cover and the step of special connecting sleeve, because the leading role of sealing steel bushing, cylindrical small piston in the middle of it is done vertical upper and lower just very stable when mobile, can not be diagonal movement by disalignment, improve the sealability of oil well pump, prolonged working life.Be connected with special connecting sleeve between last valve cover and ring-type lower valve base, the pumping pipelines of ring-type lower valve base below is connected with the standing valve cover of below by connecting tube, and this structural type makes manufacturing, installs and overhaul more convenient, easy disassembling.
The internal diameter of the sealing cylinder sleeve in the utility model and the external diameter of small piston are complementary, and are the motive sealing state.Small piston is vertically upper and lower moving in the sealing cylinder sleeve, good seal performance, and frictional loss is little, has improved pumping efficiency.
The side, cylinder side of small piston limited step below has 2~6 oil inlet holes in the utility model.The oil inlet hole that small piston cylinder side is other uniform, when plate valve was opened, oil stream entered oil pipe fast from 2~6 uniform oil inlet holes, has improved pumping efficiency.
Small piston in the sealing cylinder sleeve of the present utility model is the many usefulness of one, and small piston top oil outlet is a ball valve seat, and middle part cylindrical protrusions limited step is made spacing usefulness, and the lower end is that plate valve is made opening and closing valve usefulness.It has characteristics rational in infrastructure, easy to process, the one multipotency.
The utility model is applicable to tubing pump, liner-less oil well pump and integeral tube pumping pump.
The utility model compared with the prior art, has following advantage: one, owing between valve cover on the piston that moves about and cylindrical small piston, increased the pilot seal cylinder sleeve, small piston is done vertical upper and lower moving in the sealing cylinder sleeve, good stability, can not be diagonal movement by disalignment, improve the sealability of oil well pump, thereby improved pumping efficiency.Also increase the sealing cylinder sleeve between standing valve cover and the small piston, improved the sealability and the pumping efficiency of oil well pump equally.Two, small piston is upper and lower when mobile in the pilot seal cylinder sleeve, and resistance is little, reduces with the casing wall frictional loss, has therefore prolonged oil well pump working life.Three, be connected with special connecting sleeve between last valve cover and ring-type lower valve base, be connected with connecting tube between the pumping pipelines below the ring-type lower valve base and standing valve cover, this structure makes manufacturing, installs and overhauls more convenient, easy disassembling.
Now in conjunction with the accompanying drawings an embodiment of the present utility model is specified.
Structural representation when Fig. 1 is the utility model upstroke.
Structural representation when Fig. 2 is the utility model down stroke.
Working principle schematic representation when Fig. 3 is the utility model upstroke.
Working principle schematic representation when Fig. 4 is the utility model down stroke.
Among the figure, arrow is represented the flow direction of crude oil in the pump, the outer arrow of the pump piston movement direction of representing to move about.
Number in the figure is represented:
The 1-sucker rod, 2-working barrel, 3-cylinder sleeve, 4-oil outlet, the 5-piston that moves about, 6-oil through, the last valve cover of 7-, 8-ball valve seat, the 9-small piston, 10-seals cylinder sleeve, 11-oil pipe, the special connecting sleeve of 12-, 13-limited step, 14-oil inlet hole, the 15-plate valve, 16-ring-type lower valve base, 17-connecting tube, 18-standing valve cover, 19-oil through, the special connecting sleeve of 20-, the 21-ball valve seat, 22-seals cylinder sleeve, 23-small piston, the 24-limited step, 25-oil inlet hole, 26-plate valve, 27-ring-type lower valve base, 28-step, 29-oil pipe, the 30-steel ball, 31-step, 32-steel ball.
Be an embodiment of the present utility model (referring to accompanying drawing) below.
The bivalve assembled tube type oil well pump that a kind of oil field machinery oil is used comprises working barrel 2, and working barrel 2 liner cylinder sleeves 3 constitute pumping pipelines.The piston 5 that moves about that has the internal diameter with cylinder sleeve 3 to be complementary in the pipeline, the piston 5 top sides that move about have oil outlet 4, move about piston 5 tops and sucker rod 1 joins, sucker rod 1 links to each other with the ground rise or fall machine, the cylindrical valve cover 7 of going up is arranged at piston 5 tops of moving about, on the last disk of last valve cover 7 oil through 6 is arranged, oil through 6 communicates with the pumping pipelines on piston 5 tops of moving about, steel ball 32 is arranged in the inner chamber of last valve cover 7, sealing cylinder sleeve 10 is installed between the step 31 of the lower disc of last valve cover 7 and special connecting sleeve 12, be embedded with and go up in the sealing cylinder sleeve 10, the cylindrical small piston 9 that moves seals the internal diameter of cylinder sleeve 10 and the external diameter of small piston 9 and is complementary down, is the motive sealing state.There is circular oil pipe 11 centre of small piston 9, the top end of small piston 9 is a ball valve seat 8, there is the cylindrical limited step 13 of projection at small piston 9 middle parts, the side, small piston 9 cylinder sides of limited step 13 belows has 4 oil inlet holes 14, it communicates with oil pipe 11, the below of small piston 9 is plate valves 15, and its below is a ring-type lower valve base 16, connects with special connecting sleeve 12 between ring-type lower valve base 16 and the last valve cover 7.There is the connecting tube 17 that is fixed on the pumping pipelines tube wall below of ring-type lower valve base 16, its below is connected with standing valve cover 18, oil through 19 is arranged on the disk on the standing valve cover 18, oil through 19 is through connecting tube 17, the piston 5 that moves about communicates with the pumping pipelines on top, steel ball 30 is arranged in the inner chamber of standing valve cover 18, sealing cylinder sleeve 22 is installed between the step 28 of standing valve cover 18 lower discs and special connecting sleeve 20, be embedded with and go up in the sealing cylinder sleeve 22, mobile down cylindrical small piston 23, the internal diameter of sealing cylinder sleeve 22 and the external diameter of small piston 23 are complementary, and are the motive sealing state.Circular oil pipe 29 is arranged in the middle of the small piston 23, small piston 23 top ends are ball valve seat 21, there is the cylindrical limited step 24 of projection at small piston 23 middle parts, the side, cylinder side of limited step below has 4 oil inlet holes 25, it communicates with oil pipe 28, and small piston 23 belows are plate valves 26, and its below is a ring-type lower valve base 27, connect ring-type lower valve base 27 below union tails with special connecting sleeve 20 between ring-type lower valve base 27 and the standing valve cover 18.

Claims (3)

1, the bivalve assembled tube type oil well pump that a kind of oil field machinery oil is used, comprise working barrel [2], working barrel [2] liner cylinder sleeve [3] constitutes pumping pipelines, the piston that moves about [5] that is complementary with cylinder sleeve [3] internal diameter is arranged in the pipeline, piston [5] the top side that moves about has oil outlet [4], move about piston [5] top and sucker rod [1] joins, the lift on sucker rod [1] and ground links to each other, the cylindrical valve cover [7] of going up is arranged at piston [5] top of moving about, oil through [6] is arranged on the last disk of last valve cover [7], oil through [6] communicates with the pumping pipelines on the piston that moves about [5] top, steel ball [32] is arranged in the inner chamber of last valve cover [7], it is characterized in that: sealing cylinder sleeve [10] upward is installed between the step [31] of the lower disc of valve cover [7] and special connecting sleeve [12], be embedded with and go up in the sealing cylinder sleeve [10], mobile down cylindrical small piston [9], circular oil pipe [11] is arranged in the middle of the small piston [9], small piston [9] top end is ball valve seat [8], there is the cylindrical limited step [13] of projection at small piston [9] middle part, the other oil inlet hole [14] that has in small piston [9] the cylinder side of limited step [13] below, it communicates with oil pipe [11], small piston [9] below is plate valve [15], its below is ring-type lower valve base [16], connect with special connecting sleeve [12] between ring-type lower valve base [16] and the last valve cover [7], there is the connecting tube [17] that is fixed on the pumping pipelines tube wall below of ring-type lower valve base [16], its below is connected with standing valve cover [18], oil through [19] is arranged on the last disk of standing valve cover [18], oil through [19] is through connecting tube [17], the piston [5] that moves about communicates with the pumping pipelines on top, steel ball [30] is arranged in the inner chamber of standing valve cover [18], sealing cylinder sleeve [22] is installed between the step [28] of standing valve cover [18] lower disc and special connecting sleeve [20], be embedded with and go up in the sealing cylinder sleeve [22], mobile down cylindrical small piston [23], circular oil pipe [29] is arranged in the middle of the small piston [23], small piston [23] top end is ball valve seat [21], there is the cylindrical limited step [24] of projection at small piston [23] middle part, the other oil inlet hole [25] that has in the cylinder side of limited step [24] below, it communicates with oil pipe [28], small piston [23] below is plate valve [26], its below is ring-type lower valve base [27], connect ring-type lower valve base [27] below union tail between ring-type lower valve base [27] and the standing valve cover [18] with special connecting sleeve [20].
2, bivalve assembled tube type oil well pump according to claim 1, the external diameter that it is characterized in that sealing the internal diameter of cylinder sleeve [10], [22] and small piston [9], [23] is complementary, and is the motive sealing state.
3, bivalve assembled tube type oil well pump according to claim 1 is characterized in that the side, cylinder side of the limited step below of small piston [9], [23] has 2~6 oil inlet holes [14,25].
CN 99226363 1999-04-21 1999-04-21 Double-valve combined-tube type oil pump Expired - Fee Related CN2367796Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 99226363 CN2367796Y (en) 1999-04-21 1999-04-21 Double-valve combined-tube type oil pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 99226363 CN2367796Y (en) 1999-04-21 1999-04-21 Double-valve combined-tube type oil pump

Publications (1)

Publication Number Publication Date
CN2367796Y true CN2367796Y (en) 2000-03-08

Family

ID=34016067

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 99226363 Expired - Fee Related CN2367796Y (en) 1999-04-21 1999-04-21 Double-valve combined-tube type oil pump

Country Status (1)

Country Link
CN (1) CN2367796Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008148297A1 (en) * 2007-05-30 2008-12-11 Hongmin Li A hydraulic oil pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008148297A1 (en) * 2007-05-30 2008-12-11 Hongmin Li A hydraulic oil pump

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C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee
C19 Lapse of patent right due to non-payment of the annual fee