CN204511836U - A kind of double-plunger series oil-well pump - Google Patents
A kind of double-plunger series oil-well pump Download PDFInfo
- Publication number
- CN204511836U CN204511836U CN201420825464.1U CN201420825464U CN204511836U CN 204511836 U CN204511836 U CN 204511836U CN 201420825464 U CN201420825464 U CN 201420825464U CN 204511836 U CN204511836 U CN 204511836U
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- plunger
- pump barrel
- plunger assembly
- pump
- double
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Abstract
The utility model discloses a kind of double-plunger series oil-well pump, comprise the upper pump barrel of connecting successively, middle pump barrel and lower pump barrel, and be located at the plunger assembly in middle pump barrel; When plunger assembly moves to lower dead center, the upper plug of described plunger assembly is positioned at middle pump barrel, and the lower plunger of plunger assembly is positioned at lower pump barrel; When plunger assembly moves to top dead center, the upper plug of described plunger assembly is positioned at pump barrel, in the middle of the lower plunger position of plunger assembly in pump barrel.The utility model achieves simultaneously to be cleared up respectively the friction pair that two plungers and pump barrel are formed within the scope of a jig frequency, also ensure that the pump efficiency in stroke range does not decline.And the process of this two plunger alternations and cleaning, when next stroke arrives, can make the accumulation not having solid particle in the gap of plunger and pump barrel.
Description
Technical field
The utility model relates to oil well pump technical field, in particular, and particularly a kind of double-plunger series oil-well pump.
Background technique
When field produces, if when running into the hole condition of or easy fouling high containing sand, often holddown is the principal element affecting pump detection period, while shortening pump detection period, what bring is that production maintenance cost raises.So, for height containing sand drain, the mechanism that the oil well pump of fouling hole condition easily produces holddown phenomenon is in process of production analyzed, think generally easily to accumulate solid particle between plunger and pump barrel, when this particle accumulation amount acquires a certain degree, then easily produce holddown, so, common mentality of designing is: reduce or stop this solid particle entering the friction pair that plunger and pump barrel formed, or when there being particle engaging friction secondary, be designed with holding space (circular groove on plunger) or should discharge as early as possible, in order to avoid particle accumulation and the holddown phenomenon that causes occurs.When there being the phenomenon of fouling, also should effectively prevent from forming dirty accumulation on the surface of plunger or pump barrel.
Model utility content
The purpose of this utility model is the technical problem for existing in prior art, provides a kind of double-plunger series oil-well pump.
In order to solve problem set forth above, the technical solution adopted in the utility model is:
A kind of double-plunger series oil-well pump, comprises the upper pump barrel of connecting successively, middle pump barrel and lower pump barrel, and is located at the plunger assembly in middle pump barrel; When plunger assembly moves to lower dead center, the upper plug of described plunger assembly is positioned at middle pump barrel, and the lower plunger of plunger assembly is positioned at lower pump barrel; When plunger assembly moves to top dead center, the upper plug of described plunger assembly is positioned at pump barrel, in the middle of the lower plunger position of plunger assembly in pump barrel.
According to a preferred embodiment of the present utility model: also comprise the first reducer union and the second reducer union, the internal diameter of described upper pump barrel and lower pump barrel is all greater than the internal diameter of middle pump barrel, described upper pump barrel is connected by the first reducer union with between middle pump barrel, and described lower pump barrel is connected by the second reducer union with between middle pump barrel.
According to a preferred embodiment of the present utility model: described plunger assembly comprises upper plug and the lower plunger of series connection mutually.
According to a preferred embodiment of the present utility model: also comprise the first box cupling, connecting rod and the second box cupling, the upper end of described connecting rod is connected with the lower end of upper plug by the first box cupling, and the lower end of described connecting rod is connected with the upper end of lower plunger by the second box cupling.
According to a preferred embodiment of the present utility model: the lower edges of described upper plug and lower plunger is equipped with inside chamfering.
Compared with prior art, the beneficial effects of the utility model are: the utility model have employed the three-stage structure of pump barrel, middle pump barrel and lower pump barrel, and when plunger assembly moves to lower dead center, the upper end of plunger assembly is positioned at middle pump barrel, when plunger assembly moves to top dead center, the lower end of plunger assembly is positioned at line pump cylinder, this structure achieves simultaneously clears up respectively the friction pair that two plungers are formed within the scope of a jig frequency, also ensure that pump efficiency does not decline in stroke range.And the process of this two plunger alternations and cleaning, when next stroke arrives, can make the accumulation not having solid particle in the gap of plunger and pump barrel.
Accompanying drawing explanation
Fig. 1 is the structural representation that double-plunger series oil-well pump of the present utility model is in top dead center.
Fig. 2 is that double-plunger series oil-well pump of the present utility model is in operating structural representation.
Fig. 3 is the structural representation that double-plunger series oil-well pump of the present utility model is in lower dead center.
Description of reference numerals: 1, upper pump barrel, 2, upper plug, the 3, first box cupling, 4, connecting rod, the 5, first reducer union, the 6, second box cupling, 7, lower plunger, 8, middle pump barrel, the 9, second reducer union, 10, lower pump barrel.
Embodiment
For the ease of understanding the utility model, below with reference to relevant drawings, the utility model is described more fully.Preferred embodiment of the present utility model is given in accompanying drawing.But the utility model can realize in many different forms, is not limited to embodiment described herein.On the contrary, provide the object of these embodiments be make the understanding of disclosure of the present utility model more comprehensively thorough.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present utility model understand usually.The object of the term used in specification of the present utility model herein just in order to describe specific embodiment, is not intended to be restriction the utility model.
Consult shown in Fig. 2, the utility model provides a kind of double-plunger series oil-well pump, comprises upper pump barrel 1, middle pump barrel 8 and the lower pump barrel 10 of connecting successively, and is located at the plunger assembly in middle pump barrel 8; When plunger assembly moves to lower dead center (as shown in Figure 3), the upper plug 2 of described plunger assembly is positioned at middle pump barrel 8, and the lower plunger 7 of plunger assembly is positioned at lower pump barrel 10; When plunger assembly moves to top dead center (as shown in Figure 1), the upper plug 2 of described plunger assembly is positioned at pump barrel 1, in the middle of the lower plunger 7 of plunger assembly in pump barrel 8.
Concrete, the utility model also comprises the first reducer union 5 and the second reducer union 9, the internal diameter of described upper pump barrel 1 and lower pump barrel 10 is all greater than the internal diameter of middle pump barrel 8, be connected by the first reducer union 5 between described upper pump barrel 1 with middle pump barrel 8, described lower pump barrel 10 is connected by the second reducer union 9 with between middle pump barrel 8.
Concrete, the plunger assembly described in the utility model comprises upper plug 2 and the lower plunger 7 of series connection mutually.
Concrete, the utility model also comprises the first box cupling 3, connecting rod 4 and the second box cupling 6, and the upper end of described connecting rod 4 is connected with the lower end of upper plug 2 by the first box cupling 3, and the lower end of described connecting rod 4 is connected with the upper end of lower plunger 7 by the second box cupling 6.
Double-plunger series oil-well pump of the present utility model be combine all sand controls, antiscale pump advantage and carried out structural innovative design.It is mainly reflected in following some:
One, double-plunger series oil-well pump of the present utility model adopts the plunger assembly of two plungers (i.e. upper plug 2 and lower plunger 7) to carry out the structure of connecting, and pump barrel is also divided into three sections structure to be connected in series, upper and lower two sections of pump barrel internal diameters are large compared with intermediate section pump barrel internal diameter.
When plunger assembly comes downwards to lower dead center, lower plunger below 7 enters lower pump barrel 10, and upper plug 2 remains on middle pump barrel 8 and seals; When plunger assembly goes upward to top dead center, upper plug 2 enters pump barrel 1, and lower plunger 7 remains on middle pump barrel 8 and seals; This structure achieves simultaneously clears up respectively the friction pair that two plungers are formed within the scope of a jig frequency, also ensure that the pump efficiency in stroke range does not decline.The process of this two plunger alternations and cleaning, when next stroke arrives, can make the accumulation not having solid particle in the gap of plunger and pump barrel.
What the upper plug 2 that two, in the utility model, two are connected and lower plunger 7 adopted is the strong structure opened and closed, and is equipped with inside chamfering at upper plug 2 and the lower edges of lower plunger 7.Strong on-off structure design achieves when down stroke, and can realize plunger body and roofbolt systematic position, and then realize the self-adaptative adjustment of plunger body and pump barrel relative position, the solid particle being conducive to engaging friction pair outwards shifts out.Inside chamfering structure ensure that the omnidistance scraping to pump barrel inwall in plunger up-down stroke; Further, when down stroke, when in two plunger body dropping process, be equivalent to two large wiper rings, realize carrying out random scraping to the arbitrary surfaces of pump barrel inwall.
Three, the utility model achieves lower plunger 7 when top dead center from structural design, and the pump barrel 8 that always mediates is inner, and the solid particle that the design of this structure can make top during shutdown fall enters plunger body inside, decreases the possibility of engaging friction pair.When shutting down at top dead center; upper prop cock body enters pump barrel; lower prop cock body remains in middle pump barrel 8; because plunger body top edge is designed with inside chamfering structure; so the solid particle that top falls can enter plunger body; the possibility of engaging friction pair can be greatly reduced; if when having particle engaging friction secondary; the structural design of strong open-close type; also system plunger body and roofbolt systematic position when down stroke can be made; thus make the relative position of plunger and pump barrel carry out self-adaptative adjustment, solid particle and then effectively discharged.
Above-described embodiment is the utility model preferably mode of execution; but mode of execution of the present utility model is not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection domain of the present utility model.
Claims (5)
1. a double-plunger series oil-well pump, is characterized in that: comprise the upper pump barrel (1) of connecting successively, middle pump barrel (8) and lower pump barrel (10), and be located at the plunger assembly in middle pump barrel (8); When plunger assembly moves to lower dead center, the upper end of described plunger assembly is positioned at middle pump barrel (8), and the lower end of plunger assembly is positioned at lower pump barrel (10); When plunger assembly moves to top dead center, the upper end of described plunger assembly is positioned at pump barrel (1), and the lower end of plunger assembly is positioned at line pump cylinder (8).
2. double-plunger series oil-well pump according to claim 1, it is characterized in that: also comprise the first reducer union (5) and the second reducer union (9), the internal diameter of described upper pump barrel (1) and lower pump barrel (10) is all greater than the internal diameter of middle pump barrel (8), described upper pump barrel (1) is connected by the first reducer union (5) with between middle pump barrel (8), and described lower pump barrel (10) is connected by the second reducer union (9) with between middle pump barrel (8).
3. double-plunger series oil-well pump according to claim 1, is characterized in that: described plunger assembly comprises upper plug (2) and the lower plunger (7) of series connection mutually.
4. double-plunger series oil-well pump according to claim 3, it is characterized in that: also comprise the first box cupling (3), connecting rod (4) and the second box cupling (6), the upper end of described connecting rod (4) is connected with the lower end of upper plug (2) by the first box cupling (3), and the lower end of described connecting rod (4) is connected with the upper end of lower plunger (7) by the second box cupling (6).
5. double-plunger series oil-well pump according to claim 3, is characterized in that: described upper plug (2) is equipped with inside chamfering with the lower edges of lower plunger (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420825464.1U CN204511836U (en) | 2014-12-23 | 2014-12-23 | A kind of double-plunger series oil-well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420825464.1U CN204511836U (en) | 2014-12-23 | 2014-12-23 | A kind of double-plunger series oil-well pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204511836U true CN204511836U (en) | 2015-07-29 |
Family
ID=53709819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420825464.1U Expired - Fee Related CN204511836U (en) | 2014-12-23 | 2014-12-23 | A kind of double-plunger series oil-well pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204511836U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736337A (en) * | 2016-03-21 | 2016-07-06 | 大庆渤基科技开发有限公司 | Efficient energy-saving oil well pump |
| CN107218013A (en) * | 2017-01-22 | 2017-09-29 | 宋丽梅 | A kind of laddering synchronous oil recovery method and a kind of laddering multistage simultaneous pumping system pump |
| CN113606122A (en) * | 2021-09-01 | 2021-11-05 | 大庆市瑞斯德石油机械制造有限公司 | Multifunctional pumping aid with oil increasing and yield increasing functions |
-
2014
- 2014-12-23 CN CN201420825464.1U patent/CN204511836U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736337A (en) * | 2016-03-21 | 2016-07-06 | 大庆渤基科技开发有限公司 | Efficient energy-saving oil well pump |
| CN107218013A (en) * | 2017-01-22 | 2017-09-29 | 宋丽梅 | A kind of laddering synchronous oil recovery method and a kind of laddering multistage simultaneous pumping system pump |
| CN113606122A (en) * | 2021-09-01 | 2021-11-05 | 大庆市瑞斯德石油机械制造有限公司 | Multifunctional pumping aid with oil increasing and yield increasing functions |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 Termination date: 20201223 |
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| CF01 | Termination of patent right due to non-payment of annual fee |