CN202040074U - Multi-functional oil-well pump for soft sealing short pump cylinder - Google Patents
Multi-functional oil-well pump for soft sealing short pump cylinder Download PDFInfo
- Publication number
- CN202040074U CN202040074U CN2011201559876U CN201120155987U CN202040074U CN 202040074 U CN202040074 U CN 202040074U CN 2011201559876 U CN2011201559876 U CN 2011201559876U CN 201120155987 U CN201120155987 U CN 201120155987U CN 202040074 U CN202040074 U CN 202040074U
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- pump
- piston
- pump barrel
- sealing
- sealing unit
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Abstract
The utility model provides a multi-functional oil-well pump for a soft sealing short pump cylinder, which is composed of a piston and a pump cylinder. The piston is sleeved in the pump cylinder and is longer than the pump cylinder. A plurality of sealing unit groups are connected between the piston and the cylinder wall of the pump cylinder in a sleeve mode and used for sealing cylinder wall gaps between the piston and the pump cylinder. Each sealing unit group is formed by axially overlaying a plurality of sealing rings which are made of elastic materials, and the sealing rings are in interference fit with the piston. Retaining rings connected with the piston in a sleeve mode are used for separating each sealing unit group. By means of improvement of the existing sealing structure of the oil-well pump, the multi-functional oil-well pump can avoid pump blocking, reduce loss, improve sealing property of the oil-well pump and pump efficiency, prolong pump inspection circle and increase profits when an oil well is exploited in sand production and gas production process under high temperature.
Description
Technical field
The utility model relates to technical field of petroleum extraction, particularly soft seal short pump barrel multifunctional oil-well pump.
Background technique
The oil well pump that oilfield exploitation uses is commonly the long pump barrel metal of short piston oil well pump.Generally, long 1.2 meters of piston, chromium plating of pump barrel internal surface or carbonitriding are handled, 4.5 meters or 7.5 meters of length, piston is to-and-fro motion in pump barrel, and crude oil is given rise to ground.When the sand grains engaging friction was secondary, easily pulled on the surface, and leakage increases, and pump efficiency reduces, and occurs the holddown phenomenon when serious.Easy carbon distribution holddown when crude oil temperature is high, perhaps piston pump barrel inflating clip pump.Work as H
2S, gas lock easily takes place when rock gas is serious.Pump valve leakage and retardation phenomenon were more serious when viscosity of crude height or oil well gradient were big, reduced pump efficiency.China Patent No.: disclose a kind of " long-term job plug soft seal sand-proof oil-well pump " in 97205005.1, this pump adopts long-term job plug, short pump barrel, and the nonmetallic material seal ring is installed in the pump barrel, and seal ring is provided with Spring Steel Wire outward.This oil well pump guarantees the reliability of seal ring by Spring Steel Wire, can quicken the wearing and tearing of seal ring, reduce working life, operating temperature is greatly in 120 ℃, and the oil well traveling valve that such oil well pump is serious at aerogenesis, viscosity of crude is high, gradient is big can be not closed completely, leakage is serious, causes pump efficiency to reduce.
Summary of the invention
Main purpose of the present utility model is to solve problems of the prior art, and a kind of soft seal short pump barrel multifunctional oil-well pump is provided.
The purpose of this utility model is achieved by following technical proposals:
Soft seal short pump barrel multifunctional oil-well pump is made of piston and pump barrel; Described piston sleeve is located among the pump barrel, and is longer than described pump barrel; It is characterized in that:
Between the tube wall of described piston and pump barrel, be socketed with some groups of sealing unit groups, in order to the tube wall gap between packed-piston and the pump barrel; Every group of sealing unit group constitutes by some seal rings are axially stacked; The sealing ring adopts elastic material to make, and adopts the interference fit design between seal ring and the piston;
Between described each sealing unit group by be socketed on the piston spacer ring separately.
What described seal ring adopted is lamination coating.
The material that described spacer ring adopted is a tin bronze.
Between described each sealing unit group and pump barrel inwall, also be provided with elasticity accumulation of energy ring.
Described elasticity accumulation of energy ring adopts composite rubber-plastic material to make.
The beneficial effects of the utility model are:
1, this oil well pump requires low to piston face straightness accuracy and degree of finish;
2, sealing unit group and piston are taked interference fit, miss for a short time, and shake out and are difficult for during high temperature stuck;
3, be provided with elasticity accumulation of energy ring between sealing unit group and the pump barrel, can guarantee the sealing between sealing unit and piston, the pump barrel, prolong sealing unit working life, and reduce the influence that oil well pump is subjected to because of variation of ambient temperature.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, constitutes the application's a part, does not constitute qualification of the present utility model.In the accompanying drawings:
Fig. 1 is the structural drawing of soft seal short pump barrel multifunctional oil-well pump.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer,, the utility model is described in further details below in conjunction with mode of execution and accompanying drawing.At this, exemplary embodiment of the present utility model and explanation thereof are used to explain the utility model, but not as to qualification of the present utility model.
Fig. 1 is the structural drawing of soft seal short pump barrel multifunctional oil-well pump.As shown in the figure, the designed oil well pump of the present invention is made of piston 1 and pump barrel 2.Described piston 1 is sheathed among the pump barrel 2, and is longer than described pump barrel 2.
Between the tube wall of described piston 1 and pump barrel 2, be socketed with some groups of sealing unit groups 3, in order to the tube wall gap between packed-piston 1 and the pump barrel 2.Every group of sealing unit group 3 constitutes by some seal rings are axially stacked.The sealing ring adopts elastic material to make, and adopts the interference fit design between seal ring and the piston 1.So-called interference fit is meant the external diameter of the internal diameter of seal ring less than piston 1.Like this, seal ring is socketed on the outer wall of piston 1 by the elastic performance of material own, has guaranteed the excellent sealing between seal ring and the piston.
Between described each sealing unit group 3 by be socketed on the piston 1 spacer ring 4 separately.
The soft seal short pump barrel multifunctional oil-well pump that the utility model is designed, material selection and the design of the interference fit between seal ring and the piston 1 by above-mentioned seal ring, make the leakage between sealing unit group 3 and the piston 1 reduce, and be not easy because of shake out and situation such as high temperature stuck.And because seal ring selects elastic material to make, therefore straightness accuracy and the degree of finish to piston outer wall requires also low.
In the present embodiment, the concrete employing of described seal ring is lamination coating.300 ℃ of the high-temperature resistants of this material, the highest withstand voltage 30MPa can bear the working environment of down-hole fully.
In addition, for fear of worn piston, in the present embodiment, the material that described spacer ring 4 is adopted is a tin bronze.
In addition, as shown in Figure 1, between described each sealing unit group 3 and pump barrel 2 inwalls, also be provided with elasticity accumulation of energy ring 5.Because aforementioned sealing unit group 3 internal diameters are less than piston 1 external diameter, when piston cooperated with sealing unit group 3, elasticity accumulation of energy ring 5 was compressed stored energy.If when small amount of wear appearred in sealing unit group 3, elasticity accumulation of energy ring 5 was emitted energy, expand, replenish the wear extent of sealing unit group 3, make sealing unit group 3 keep sealing with piston 1 all the time.This elasticity accumulation of energy ring 5 adopts composite rubber-plastic material to make.By this elasticity accumulation of energy ring 5 is set, can further guarantee the sealing between sealing unit group and the pump barrel between sealing unit group 3 and pump barrel 2 inwalls; Can cushion the infringement of external force, prolong the working life of sealing unit group the sealing unit group; Can also guarantee can not influence its sealability or cause device failure between sealing unit group and piston, the pump barrel because of external temperature changes.
In sum, the soft seal short pump barrel multifunctional oil-well pump that the utility model is designed, by improvement to existing oil well pump sealing configuration, solved problems of the prior art, providing a kind of can shake out, during oil mining such as high temperature, aerogenesis, reduce leakage, improve the sealability of oil well pump, improve pump efficiency, prolong pump detection period, the oil well pump of increasing the benefit.Persons skilled in the art are under this design philosophy, and any not creative transformation of doing all should be considered as within protection domain of the present utility model.
Claims (5)
1. soft seal short pump barrel multifunctional oil-well pump is made of piston and pump barrel; Described piston sleeve is located among the pump barrel, and is longer than described pump barrel; It is characterized in that:
Between the tube wall of described piston and pump barrel, be socketed with some groups of sealing unit groups, in order to the tube wall gap between packed-piston and the pump barrel; Every group of sealing unit group constitutes by some seal rings are axially stacked; The sealing ring adopts elastic material to make, and adopts the interference fit design between seal ring and the piston;
Between described each sealing unit group by be socketed on the piston spacer ring separately.
2. soft seal short pump barrel multifunctional oil-well pump as claimed in claim 1 is characterized in that:
What described seal ring adopted is lamination coating.
3. soft seal short pump barrel multifunctional oil-well pump as claimed in claim 1 is characterized in that:
The material that described spacer ring adopted is a tin bronze.
4. soft seal short pump barrel multifunctional oil-well pump as claimed in claim 1 is characterized in that:
Between described each sealing unit group and pump barrel inwall, also be provided with elasticity accumulation of energy ring.
5. soft seal short pump barrel multifunctional oil-well pump as claimed in claim 4 is characterized in that:
Described elasticity accumulation of energy ring adopts composite rubber-plastic material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201559876U CN202040074U (en) | 2011-05-16 | 2011-05-16 | Multi-functional oil-well pump for soft sealing short pump cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201559876U CN202040074U (en) | 2011-05-16 | 2011-05-16 | Multi-functional oil-well pump for soft sealing short pump cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202040074U true CN202040074U (en) | 2011-11-16 |
Family
ID=44967520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201559876U Expired - Lifetime CN202040074U (en) | 2011-05-16 | 2011-05-16 | Multi-functional oil-well pump for soft sealing short pump cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202040074U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944370A (en) * | 2012-10-31 | 2013-02-27 | 四川安东油气工程技术服务有限公司 | Pressure device for airtightness detection of casing and manufacturing method thereof |
-
2011
- 2011-05-16 CN CN2011201559876U patent/CN202040074U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944370A (en) * | 2012-10-31 | 2013-02-27 | 四川安东油气工程技术服务有限公司 | Pressure device for airtightness detection of casing and manufacturing method thereof |
| CN102944370B (en) * | 2012-10-31 | 2015-03-25 | 四川安东油气工程技术服务有限公司 | Pressure device for airtightness detection of casing and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111116 |
|
| CX01 | Expiry of patent term |