CN201517498U - Rubber bobbin plunger piston - Google Patents
Rubber bobbin plunger piston Download PDFInfo
- Publication number
- CN201517498U CN201517498U CN2009202164138U CN200920216413U CN201517498U CN 201517498 U CN201517498 U CN 201517498U CN 2009202164138 U CN2009202164138 U CN 2009202164138U CN 200920216413 U CN200920216413 U CN 200920216413U CN 201517498 U CN201517498 U CN 201517498U
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- packing element
- plunger
- boss
- joint
- valve seat
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Abstract
A rubber bobbin plunger piston used for tube-type oil-well pump mainly aims to solve the problem that the phenomenon of pump stuck of the prior plunger piston easily occurs. The rubber bobbin plunger piston is characterized in that the rubber bobbin further comprises an upper connecting sleeve, a lower connecting sleeve, a rubber bobbin, a valve seat, a valve ball, a push baffle ring and a bumper pad; the rubber bobbin is made of oil-proof rubber material mixed with silk yarn; the upper connecting sleeve and the lower connecting sleeve are respectively connected at two ends of the rubber bobbin through sulfidation, and the two connecting sleeves are in threaded connection with an upper connector and a bottom end connector; the valve seat is positioned in the bottom end connector, and is limited through the end part of the lower connecting sleeve connected through the bottom end connector and a step of the bottom end connector body; the push baffle ring and the bumper pad are fixed at the bottom of the bottom end connector in sequence, and the push baffle ring is positioned below a liquid inlet on the bottom end connector; and a valve ball fixedly connected with a slide bar is positioned between the valve seat and the push baffle ring. The plunger piston can prevent the phenomenon of pump stuck due to oilwell encrustation or sand flow, and has the characteristics of good sealing effect and prompt travelling valve opening.
Description
Technical field:
The utility model relates to a kind of being applied to and is used in the plunger on the tubing pump in the oil recovery field, oil field.
Background technique:
At present, the oil field is the old-fashioned plunger that steel material is made at the tubing pump plunger of usefulness.This plunger during fabrication, often makes as far as possible that the matching gap of plunger and pump barrel is very little in order to reduce the pump leakage amount.But, find through using the back for a long time, this plunger in being applied to fouling oil well, sand well and thick oil well after, following problem can take place: in use, when dirt bits and sand grains enter in the matching gap of plunger and pump barrel, because plunger and pump barrel are steel material, will cause the stuck phenomenon generation in pump barrel of plunger, limited the application of tubing pump under oil well fouling and oil recovery condition such as shake out thus.
The model utility content:
Be applied to the oil well fouling and shake out and waiting the problem of easy generation holddown phenomenon under the oil recovery condition in order to solve existing tubing pump steel plunger, the utility model provides a kind of packing element plunger, this kind packing element plunger has elasticity, can prevent because of the oil well fouling or the holddown phenomenon that takes place of shaking out takes place, and have good sealing effect, traveling valve is opened characteristics timely.
The technical solution of the utility model is: this kind packing element plunger, comprise the upper connection that has liquid outlet, the bottom joint, the slide bar that have liquid entering hole and the positioning and guiding cover that assembles this slide bar, and upper joint sleeve, lower joint sleeve, packing element and valve seat, valve ball, push and block ring and cushion pad.Wherein, packing element is the wired wire material of oil resistant rubber, and described upper joint sleeve and lower joint sleeve vulcanize the two ends that are connected packing element respectively, two connecting sleeves respectively with upper connection and bottom joint by being threaded.Described valve seat is positioned at the bottom joint, by spacing with the end and the step of bottom joint own of lower joint sleeve after the bottom joint is connected, described push and block ring and cushion pad are fixed in the bottom of bottom joint successively, and wherein, described push and block ring is positioned at the below of liquid entering hole on the joint of bottom; The valve ball of fixedlying connected with slide bar is between valve seat and push and block ring.
In addition, on the basis of such scheme, further optimize, increase following feature: described packing element plunger also comprises a centralized positioning cover, described centralized positioning cover main body is a tubulose, thereon, the lower end has the upper and lower spacing boss of annular projection respectively, wherein, the lower end of described centralized positioning cover is evenly divided into some calvus, and described lower limit boss is made of the some positive stop lug boss pieces after being cut apart by annular; In the lower end of upper joint sleeve and the upper end of lower joint sleeve one and corresponding upper limit step of described upper and lower spacing boss and lower limit groove are arranged respectively, wherein, described upper limit boss is clamped between the bottom and upper limit step of upper joint sleeve, described lower limit boss then is arranged in the lower limit groove, and the width of the groove of described lower limit groove is greater than the boss axial height of described lower limit boss.
The utlity model has following beneficial effect: this kind packing element plunger because the most of main body of plunger is that the wired line manufacturing of oil resistant rubber forms, at first has wear-resisting, tensile strength reliable characteristics; Secondly, owing in the joint of bottom, adorn the valve seat that moves about, and slide bar directly is connected with valve ball, be about to the valve seat place of the capable locating point design of shackle rod stay column beyond the Great Wall in the plunger lower contact, like this when rod string pulling plunger is up, the packing element plunger can not be subjected to tensile stress and damage, and is prolonged its working life; And what is more important, such structure make ball valve open in time, and it will be opened after will beginning with the sucker rod down stroke automatically, and it is big to have overcome existing steel plunger traveling valve resistance of start in high-water-cut oil-producing well, the shortcoming that is not easy to open; Once more, this plunger when upstroke, closed liquid chunnel by the fixing bottom valve ball of slide bar after, fluid column in the up lifting well of pulling plunger, the expansive force that liquid is produced in the well can make packing element also outwards expand, and therefore, makes whole plunger be in good sealing state.This plunger because main body is resilient packing element, so even dirt bits and sand grains have entered in the gap of plunger and pump barrel, also can not resemble the steel column plug stuckly in pump barrel, can prevents the oil well fouling or shakes out and the holddown phenomenon that takes place.In addition, increased the structure of centralized positioning cover in the optimized project of this programme, this is that undergauge does not all transfinite in order to guarantee to be stretched afterwards when back expansion by compression and down stroke when the upstroke by packing element, and the centralized positioning cover can produce pulling force and makes the packing element undergauge.Like this, when the plunger down stroke, produce pulling force by the centralized positioning cover and make the packing element undergauge, thereby make descending resistance reduce; When the plunger upstroke, liquid enters by the septated hole of centralized positioning cover, spreading middle part packing element, thus make plunger and pump barrel sealing reliably.
Description of drawings:
Fig. 1 is a structure sectional view of the present utility model.
Fig. 2 is the structural representation of the utility model centralized positioning cover.
1-positioning and guiding cover among the figure, 2-upper connection, 3-upper joint sleeve, 4-packing element, 5-centralized positioning cover, 6-lower joint sleeve, 7-bottom joint, the 8-valve seat, 9-slide bar, 10-valve ball, 11-push and block ring, 12-cushion pad, 13-upper limit boss, 14-lower limit boss, 15-upper limit step, 16-lower limit groove, the 17-liquid outlet, 18-liquid entering hole, 19-septated hole.
Embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is the structure sectional view of preferred embodiment of the present utility model, as shown in FIG., this packing element plunger, comprise upper connection 2, bottom joint 7, slide bar 9 that has liquid outlet 17 and the positioning and guiding that assembles this slide bar cover 1, and upper joint sleeve 3, lower joint sleeve 6, packing element 4 and valve seat 8, valve ball 10, push and block ring 11 and cushion pad 12.
Wherein, packing element 4 is made for the wired wire material of oil resistant rubber, and described upper joint sleeve 3 and lower joint sleeve 6 vulcanize the two ends that are connected packing element 4 respectively, two connecting sleeves respectively with upper connection 2 and bottom joint 7 by being threaded.
Described valve seat 8 is positioned at bottom joint 7, by spacing with the end and the step of bottom joint own of lower joint sleeve 6 after bottom joint 7 is connected.Described push and block ring 11 and cushion pad 12 are fixed in the bottom of bottom joint 7 successively, and wherein, described push and block ring 11 is positioned at the below of liquid entering hole 18 on the bottom joint 7; 10 of valve balls of fixedlying connected with slide bar 9 are between valve seat 8 and push and block ring 11.Such structure makes slide bar promote the Point of Strength of plunger when descending in the bottom of plunger lower contact, thereby when reducing the plunger down stroke and the surface friction drag of pump barrel.
A simple packing element plunger of being made up of top these structures just can be finished the fundamental function of this kind plunger.But in order to guarantee that the packing element back undergauge that stretched when back expansion by compression and down stroke when the upstroke does not all transfinite, and the centralized positioning cover can produce pulling force and make the packing element undergauge, in the above on the basis of scheme, increased centralized positioning and overlapped 5 again.It is tubulose that 5 main bodys are overlapped in described as shown in Figure 2 centralized positioning, thereon, the lower end has the upper limit boss 13 and the lower limit boss 14 of annular projection respectively, in the lower end of upper joint sleeve 3 and the upper end of lower joint sleeve 6 one and corresponding upper limit step 15 of described upper and lower spacing boss and lower limit groove 16 are arranged respectively, wherein, described upper limit boss 13 is clamped between the bottom and upper limit step 15 of upper connection, described lower limit boss 14 then is arranged in lower limit groove 16, and the width of described lower limit groove 16 grooves is greater than the boss axial width of described lower limit boss 14.Wherein, the lower end of described centralized positioning cover 5 is evenly divided into some calvus, and then described lower limit boss 14 is made of the some positive stop lug boss pieces after being cut apart by annular.Top employed these structures are explained as follows:
1, adopt " pawl " formula centralized positioning cover, purpose is to make that the lower limit boss of centralized positioning cover 5 can form elastic force, snaps in the lower limit groove 16 corresponding with it, and makes the liquid stream can be by the septated hole middle part packing element that bulge.
2, guarantee the boss axial width of the width of lower limit groove 16 grooves greater than described lower limit boss 14, its purpose is, make lower limit boss 14 in this groove of lower limit groove, to move up and down in the space, undergauge does not all transfinite thereby realize being stretched afterwards when back expansion by compression and down stroke by packing element when upstroke, and the centralized positioning cover can produce pulling force and makes the packing element undergauge.
This kind of plunger is when work, be positioned at pump barrel, the slide bar upper end connects sucker rod, working procedure is as follows: when upstroke, it is up that rod string drives slide bar, and the fixing bottom valve ball of slide bar contacts with valve seat and closed the well liquid circulation road, this moment, the head of liquid of plunger lifting acted on the packing element inner chamber, expanded packing element and made itself and pump barrel sealing reliably, sucker rod pulling plunger is up then, thereby finishes the upstroke oil pumping process.
When down stroke, it is descending that rod string promotes slide bar, and valve ball and valve seat are thrown off, open the plunger liquid chunnel, simultaneously, the valve ball of slide bar lower end and push and block loop contacts and to promote plunger descending, the liquid of plunger cavity of resorption enters in the pump barrel of plunger epicoele through liquid entering hole, the valve seat orifice of moving about.The upper and lower so again and again stroke movement of plunger, the purpose of realization extraction crude oil.
Claims (2)
1. a packing element plunger comprises upper connection (2), bottom joint (7), slide bar (9) and the positioning and guiding cover (1) that assembles this slide bar, it is characterized in that:
Described packing element plunger also comprises upper joint sleeve (3), lower joint sleeve (6), packing element (4) and valve seat (8), valve ball (10), push and block ring (11) and cushion pad (12);
Wherein, packing element (4) is the wired wire material of oil resistant rubber, and described upper joint sleeve (3) and lower joint sleeve (6) vulcanize the two ends that are connected packing element (4) respectively, two connecting sleeves respectively with upper connection (2) and bottom joint (7) by being threaded;
Described valve seat (8) is positioned at bottom joint (7), by spacing with the end and the step of bottom joint own of lower joint sleeve (6) after bottom joint (7) is connected, described push and block ring (11) and cushion pad (12) are fixed in the bottom of bottom joint (7) successively, wherein, described push and block ring (11) is positioned at the below that bottom joint (7) is gone up liquid entering hole (18); The valve ball (10) of fixedlying connected with slide bar (9) is positioned between valve seat (8) and the push and block ring (11).
2. packing element plunger according to claim 1, it is characterized in that: described packing element plunger also comprises a centralized positioning cover (5), described centralized positioning cover (5) main body is a tubulose, thereon, the lower end has the upper and lower spacing boss (13 of annular projection respectively, 14), wherein, the lower end of described centralized positioning cover (5) is evenly divided into some calvus, and described lower limit boss (14) is made of the some positive stop lug boss pieces after being cut apart by annular; In the lower end of upper joint sleeve (3) and the upper end of lower joint sleeve (6) one and described upper and lower spacing boss (13 are arranged respectively, 14) corresponding upper limit step (15) and lower limit groove (16), wherein, described upper limit boss (13) is clamped between the bottom and upper limit step (15) of upper connection (2), described lower limit boss (14) then is arranged in lower limit groove (16), and the width of described lower limit groove (16) groove is greater than the boss axial width of described lower limit boss (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202164138U CN201517498U (en) | 2009-09-16 | 2009-09-16 | Rubber bobbin plunger piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202164138U CN201517498U (en) | 2009-09-16 | 2009-09-16 | Rubber bobbin plunger piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201517498U true CN201517498U (en) | 2010-06-30 |
Family
ID=42498220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202164138U Expired - Fee Related CN201517498U (en) | 2009-09-16 | 2009-09-16 | Rubber bobbin plunger piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201517498U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410207A (en) * | 2011-12-03 | 2012-04-11 | 丁昌炽 | Novel plastic plunger |
| CN104514703A (en) * | 2013-09-27 | 2015-04-15 | 中国石油天然气股份有限公司 | Oil extraction device of non-metal pipe oil-submersible screw pump |
| CN108019189A (en) * | 2016-11-03 | 2018-05-11 | 中国石油天然气股份有限公司 | Reducing plunger |
| CN111101883A (en) * | 2019-12-16 | 2020-05-05 | 中国石油天然气股份有限公司 | Underground buffering seating device suitable for horizontal well plunger gas lift and working method thereof |
-
2009
- 2009-09-16 CN CN2009202164138U patent/CN201517498U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410207A (en) * | 2011-12-03 | 2012-04-11 | 丁昌炽 | Novel plastic plunger |
| CN104514703A (en) * | 2013-09-27 | 2015-04-15 | 中国石油天然气股份有限公司 | Oil extraction device of non-metal pipe oil-submersible screw pump |
| CN108019189A (en) * | 2016-11-03 | 2018-05-11 | 中国石油天然气股份有限公司 | Reducing plunger |
| CN108019189B (en) * | 2016-11-03 | 2019-11-12 | 中国石油天然气股份有限公司 | Reducing plunger |
| CN111101883A (en) * | 2019-12-16 | 2020-05-05 | 中国石油天然气股份有限公司 | Underground buffering seating device suitable for horizontal well plunger gas lift and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100630 Termination date: 20110916 |