CN204163964U - Ring valve type hydraulic feedback oil - Google Patents
Ring valve type hydraulic feedback oil Download PDFInfo
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- CN204163964U CN204163964U CN201420610091.6U CN201420610091U CN204163964U CN 204163964 U CN204163964 U CN 204163964U CN 201420610091 U CN201420610091 U CN 201420610091U CN 204163964 U CN204163964 U CN 204163964U
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- polished rod
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Abstract
A kind of ring valve type hydraulic feedback oil.Mainly solve line bend under existing oil well pump roofbolt, cause the problem of rod and tube partial-wear.It is characterized in that: pump barrel (1) lower end is connected with valve body (3), have in valve body (3) and the liquid passage excessively communicated in pump barrel (1), the inlet opening (9) that valve body (3) lower end sidewall had liquid passage to communicate, plunger (2) upper end is connected with traveling valve, the external diameter contracting of plunger (2) lower end becomes, and sidewall has the liquid pass hole (10) communicated with in it, plunger (2) is placed in pump barrel (1), plunger (2) lower end is connected with polished rod (6) with loose joint (5) by connecting sleeve (4), polished rod (6) is placed in polished rod cylinder (7), polished rod cylinder (7) is placed in valve body (3) bottom, polished rod cylinder (7) upper end is connected with annular valve (8).This ring valve type hydraulic feedback oil have eliminate roofbolt descending time to cause rod tube partially to rub feature because of bend by pressure.
Description
Technical field:
The utility model relates to a kind of oil extraction in oil field oil well pump used, especially ring valve type hydraulic feedback oil.
Background technique:
In field of oil field oil extraction, oil well pump importantly descends lifting equipment.Existing oil well pump is combined by the standing valve of the traveling valve of plunger, pump barrel, its upper end and pump barrel lower end, rod string lower end is connected to plunger, and plunger is placed in pump barrel, when down stroke plunger is descending, standing valve cuts out, traveling valve is opened, and well liquid arrives above plunger, when upstroke plunger is up through traveling valve, traveling valve cuts out, standing valve is opened, and under pump, liquid enters pump through standing valve, thus complete a stroke enter discharge opeing process.Due to existing pump reasons in structure, during down stroke roofbolt lower end surface can be subject to pump barrel inner high voltage liquid to lifting force, roofbolt also can be subject to the direction of well liquid upwards along journey and major diameter node resistance simultaneously, it is bending that these power can cause bottom roofbolt pressurized to produce, thus formation rod and tube partial-wear, pump detection period shortens, and pit shaft production maintenance workload and expense increase, and affect oil recovery efficiency.
Model utility content:
In order to solve line bend under existing oil well pump roofbolt, cause the problem of rod and tube partial-wear.The utility model provides a kind of ring valve type hydraulic feedback oil.This ring valve type hydraulic feedback oil have eliminate roofbolt descending time to cause rod tube partially to rub feature because of bend by pressure.
The technical solution of the utility model is: this ring valve type hydraulic feedback oil comprises pump barrel, plunger, valve body, connecting sleeve, loose joint, polished rod, polished rod cylinder and annular valve.Pump barrel upper end is connected with upper connection, pump barrel lower end is connected with valve body, have in valve body and the liquid passage excessively communicated in pump barrel, valve body lower end sidewall there is the inlet opening that liquid passage communicates, its upper end is connected with traveling valve, the external diameter contracting of plunger lower end becomes, and sidewall has the liquid pass hole communicated with in it, plunger is placed in pump barrel, plunger lower end is connected with connecting sleeve, loose joint is covered with between plunger and connecting sleeve stage, loose joint is connected with polished rod, polished rod is placed in polished rod cylinder, polished rod cylinder is placed in valve body lower portion, polished rod cylinder upper end is connected with annular valve, the annular boss matched with annular valve is had in valve body.
The utility model has following beneficial effect: this ring valve type hydraulic feedback oil is connected with upper connection owing to adopting pump barrel upper end, pump barrel lower end is connected with valve body, have in valve body and the liquid passage excessively communicated in pump barrel, valve body lower end sidewall there is the inlet opening that liquid passage communicates, its upper end is connected with traveling valve, the external diameter contracting of plunger lower end becomes, and sidewall has the liquid pass hole communicated with in it, plunger is placed in pump barrel, plunger lower end is connected with connecting sleeve, loose joint is covered with between plunger and connecting sleeve stage, loose joint is connected with polished rod, polished rod is placed in polished rod cylinder, polished rod cylinder is placed in valve body lower portion, polished rod cylinder upper end is connected with annular valve, optimizing structure of the annular boss matched with annular valve is had in valve body.Utilize the different of rod string and polished rod cross-section area, polished rod axial compression area is large, produces the power pulling rod string downwards, and then eliminates line bend under oil well pump roofbolt, causes the problem of rod and tube partial-wear, neutral point is moved down.Thus this ring valve type hydraulic feedback oil have eliminate roofbolt descending time to cause rod tube partially to rub feature because of bend by pressure.
Accompanying drawing illustrates:
Accompanying drawing 1 is the utility model structural representation.
1-pump barrel in figure, 2-plunger, 3-valve body, 4-connecting sleeve, 5-loose joint, 6-polished rod, 7-polished rod cylinder, 8-annular valve, 9-inlet opening, 10-liquid pass hole.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in drawings, this ring valve type hydraulic feedback oil comprises pump barrel 1, plunger 2, valve body 3, connecting sleeve 4, loose joint 5, polished rod 6, polished rod cylinder 7 and annular valve 8.Pump barrel 1 upper end has been threaded connection upper connection, be connected with tubing string by upper connection, pump barrel 1 lower end is connected with valve body 3 by screw thread, valve body 3 internal upper part axis has several and the liquid passage excessively communicated in pump barrel 1, well liquid enters in pump barrel 1 by crossing liquid passage, the annular boss that in valve body 3, lower annular valve 8 matches, the inlet opening 9 that valve body 3 lower end sidewall had liquid passage to communicate, plunger 2 upper end is connected with traveling valve, the external diameter contracting of plunger 2 lower end becomes, namely plunger 2 lower end external diameter diminishes, and have on sidewall and the liquid pass hole 10 communicated in plunger 2, plunger 2 is placed in pump barrel 1, plunger 2 lower end is connected with connecting sleeve 4 by screw thread, loose joint 5 is covered with between plunger 2 and connecting sleeve 4 stage, loose joint 5 is connected with polished rod 6 by screw thread, polished rod 6 diameter is greater than sucker rod diameter, polished rod 6 is placed in polished rod cylinder 7, polished rod cylinder 7 is placed in valve body 3 bottom, polished rod cylinder 7 upper end is connected with annular valve 8.
Working procedure: during this ring valve type hydraulic feedback oil upstroke, when namely plunger 2 moves upward, pump barrel 1 internal pressure below plunger 2 reduces, and annular valve 8 is opened, and well liquid enters in pump barrel 1 through inlet opening 9, excessively liquid passage.During down stroke, when namely plunger moves downward, pump barrel 1 internal pressure raises, and the traveling valve of plunger 2 upper end is opened, and the well liquid in pump barrel 1 is discharged to above plunger 2 through traveling valve, thus completes one and enter discharge opeing process.Diameter due to polished rod 6 is greater than rod string diameter, the pressure acted on polished rod 6 is greater than the pressure on rod string, and the low pressure area of the lower end of polished rod 6 under pump, so when down stroke, high-pressure well liquid in pump barrel 1 forms the lower thrust to polished rod, and rod string can be made to obtain the downward liquid feedback force in direction, and namely polished rod 6 produces the lower pulling force to rod string, neutral point is moved down, thus can exempt rod string descending time cause rod tube partially to rub because of bend by pressure.
Comprehensively above-mentioned, this ring valve type hydraulic feedback oil is on the basis of conventional oil well pump, remove lower end standing valve, the a set of hydraulic feedback device of adjunction. this device is made up of polished rod 6 assembly and annular valve 8 assembly. and wherein polished rod 6 assembly is connected on plunger lower end, because this ring valve type hydraulic feedback oil uses polished rod 6 through pump barrel 1, lower end surface is in outside pump barrel 1, thus the well liquid high pressure in pump barrel 1 is not born, and the upper end of polished rod 6 is in pump barrel 1 and bears well liquid high pressure, thus when down stroke, rod string can be made to obtain the downward liquid feedback force in direction, produce downward pulling force, neutral point is moved down, eliminate rod string descending time to cause rod tube partially to rub phenomenon because of bend by pressure.The large runner design of ring valve wherein, can play the effect that augmented flow reduces liquid flowing resistance, be particularly suitable for passing through of the thick liquid such as viscous crude, polymer fluid; Loose joint design can play the effect run parallel in the axial direction of plunger and polished rod, prevents because of two inconsistent eccentric wears caused of component axes, also can play the effect reducing these two length larger portion part difficulty of processing.
Claims (1)
1. a ring valve type hydraulic feedback oil, comprise pump barrel (1), plunger (2), valve body (3), connecting sleeve (4), loose joint (5), polished rod (6), polished rod cylinder (7) and annular valve (8), it is characterized in that: pump barrel (1) upper end is connected with upper connection, pump barrel (1) lower end is connected with valve body (3), have in valve body (3) and the liquid passage excessively communicated in pump barrel (1), the inlet opening (9) that valve body (3) lower end sidewall had liquid passage to communicate, plunger (2) upper end is connected with traveling valve, the external diameter contracting of plunger (2) lower end becomes, and sidewall has the liquid pass hole (10) communicated with in it, plunger (2) is placed in pump barrel (1), plunger (2) lower end is connected with connecting sleeve (4), loose joint (5) is covered with between plunger (2) and connecting sleeve (4) stage, loose joint (5) is connected with polished rod (6), polished rod (6) is placed in polished rod cylinder (7), polished rod cylinder (7) is placed in valve body (3) bottom, polished rod cylinder (7) upper end is connected with annular valve (8), the annular boss matched with annular valve (8) is had in valve body (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420610091.6U CN204163964U (en) | 2014-10-17 | 2014-10-17 | Ring valve type hydraulic feedback oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420610091.6U CN204163964U (en) | 2014-10-17 | 2014-10-17 | Ring valve type hydraulic feedback oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204163964U true CN204163964U (en) | 2015-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420610091.6U Active CN204163964U (en) | 2014-10-17 | 2014-10-17 | Ring valve type hydraulic feedback oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204163964U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952626A (en) * | 2016-05-16 | 2016-09-21 | 中国石油化工股份有限公司 | Eccentric oil pump |
| CN112483370A (en) * | 2020-11-27 | 2021-03-12 | 邹淑君 | Down-stroke adjustable pull-down plunger pump |
| CN112983794A (en) * | 2021-03-04 | 2021-06-18 | 李青 | Shuttle oil pump |
-
2014
- 2014-10-17 CN CN201420610091.6U patent/CN204163964U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952626A (en) * | 2016-05-16 | 2016-09-21 | 中国石油化工股份有限公司 | Eccentric oil pump |
| CN105952626B (en) * | 2016-05-16 | 2017-12-29 | 中国石油化工股份有限公司 | A kind of eccentric oil well pump |
| CN112483370A (en) * | 2020-11-27 | 2021-03-12 | 邹淑君 | Down-stroke adjustable pull-down plunger pump |
| CN112983794A (en) * | 2021-03-04 | 2021-06-18 | 李青 | Shuttle oil pump |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |