CN2559810Y - Soft plunger pump - Google Patents
Soft plunger pump Download PDFInfo
- Publication number
- CN2559810Y CN2559810Y CN 02274698 CN02274698U CN2559810Y CN 2559810 Y CN2559810 Y CN 2559810Y CN 02274698 CN02274698 CN 02274698 CN 02274698 U CN02274698 U CN 02274698U CN 2559810 Y CN2559810 Y CN 2559810Y
- Authority
- CN
- China
- Prior art keywords
- pump
- plunger
- pump cylinder
- center tube
- soft
- Prior art date
- 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
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Abstract
The utility model relates to a soft plunger pump which pertains to an oil pump, comprising a fixed valve (1), a traveling valve (2), a lower joint (3), a pump cylinder (7) and a central pipe (8). The central pipe (8) is arranged in the pump cylinder (7); the fixed valve (1) is arranged at an oil inlet (10) at the lower part of the pump cylinder (7); the traveling valve (2) is positioned in an oil inlet (11) that is arranged at the lower joint (3) of the central pipe (8); a plurality of sealed leather bowls (5) are sleeved at the outer wall of the central pipe (8); the sealed leather bowls (5)take a shape of a bowl with the rim facing upwards; the edge of the rim of the sealed leather bowls (5)is contacted with the inner wall of the pump cylinder (7) in a sealing way. The soft plunger pump has small resistance when the plunger goes down, and ensures good sealing effect between the plunger and the pump cylinder, thereby improving pump effect. As the sealed leather bowls (5) are relatively soft and do not wear the pump cylinder (7) out, and only the sealed leather bowls (5) and other wearing parts needs to be replaced when the plunger pump is recycled and cleaned; the utility model is recyclable after being repaired, thus saving the cost.
Description
Technical field: the utility model relates to a kind of oil well pump.
Background technique: the oil field widespread usage is the steel plunger pump at present, when recovering the oil with polymer displacement of reservoir oil, there is the big problem of kinetic friction resistance, especially in the down stroke of oil well pump, because the descending resistance of plunger is big, caused the serious eccentric wear of rod tube, for addressing the above problem, adopt the measure of amplifying plunger and pump barrel matching gap at present, but resistance reducing effect is unsatisfactory after adopting above-mentioned measure, and cause that again the pump leakage amount increases, and has reduced pump efficiency.Another problem that the steel plunger pump exists is: after pulling appears in plunger or pump barrel, can only do to scrap processing, cause waste.
Summary of the invention: the utility model provides a kind of Soft plunger pump, and it has solved the big problem of kinetic friction resistance that existing steel plunger pump exists.Soft plunger pump of the present utility model comprises standing valve 1, travelling valve 2, lower contact 3, pump barrel 7 and center tube 8, center tube 8 is arranged on the inside of pump barrel 7, filler opening 10 places in pump barrel 7 lower ends are provided with standing valve 1, be connected in the oil inlet hole 11 of lower contact 3 of center tube 8 lower ends and be provided with travelling valve 2, on the outer wall of center tube 8, be set with a plurality of sealing cups 5, sealing cup 5 is bowl shaped structure and the rim of a bowl makes progress, and the periphery of the rim of a bowl forms to seal with the inwall of pump barrel 7 and contacts on the sealing cup 5.This Soft plunger pump because the area of contact of sealing cup 5 and pump barrel 7 is little and the contraction naturally of sealing cup 5, makes the descending resistance of plunger little when down stroke; When the plunger upstroke, sealing cup 5 can open by nature under the effect of head of liquid, has guaranteed the sealing effect of plunger and pump barrel, has improved pump efficiency.Because sealing cup 5 is softer, the pump barrel 7 that can not wear and tear reclaims the cleaning back as long as change sealing cup 5 and other easily damaged parts at plunger pump, can continue to use after reparation, has therefore saved cost.
Description of drawings: Fig. 1 is the structural representation of the utility model Soft plunger pump.
Embodiment: the Soft plunger pump of present embodiment is made up of standing valve 1, travelling valve 2, lower contact 3, support ring 4, sealing cup 5, pressure ring 6, pump barrel 7, center tube 8, upper connection 9.Center tube 8 is arranged on the inside of pump barrel 7, is provided with standing valve 1 at filler opening 10 places of pump barrel 7 lower ends.Be connected with lower contact 3 in center tube 8 lower ends, be provided with travelling valve 2 in the oil inlet hole 11 of lower contact 3, be set with a plurality of sealing cups 5 on the outer wall of center tube 8, sealing cup 5 is bowl shaped structure and the rim of a bowl makes progress, and the periphery of the rim of a bowl forms to seal with the inwall of pump barrel 7 and contacts on the sealing cup 5.Below each sealing cup 5, be provided with a support ring 4, be provided with a pressure ring 6 above the sealing cup 5 at each.On center tube 8, also be connected with upper connection 9.
Claims (3)
1, Soft plunger pump, it comprises standing valve (1), travelling valve (2), lower contact (3), pump barrel (7) and center tube (8), it is characterized in that center tube (8) is arranged on the inside of pump barrel (7), filler opening (10) in pump barrel (7) lower end locates to be provided with standing valve (1), be connected in the oil inlet hole (11) of lower contact (3) of center tube (8) lower end and be provided with travelling valve (2), on the outer wall of center tube (8), be set with a plurality of sealing cups (5), sealing cup (5) is bowl shaped structure and the rim of a bowl makes progress, and the periphery that sealing cup (5) is gone up the rim of a bowl contacts with the inwall formation sealing of pump barrel (7).
2, Soft plunger pump according to claim 1 is characterized in that being provided with a support ring (4) below each sealing cup (5), is provided with a pressure ring (6) on each sealing cup (5).
3, Soft plunger pump according to claim 1 is characterized in that also being connected with upper connection (9) on center tube (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02274698 CN2559810Y (en) | 2002-08-10 | 2002-08-10 | Soft plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02274698 CN2559810Y (en) | 2002-08-10 | 2002-08-10 | Soft plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2559810Y true CN2559810Y (en) | 2003-07-09 |
Family
ID=33738913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02274698 Expired - Fee Related CN2559810Y (en) | 2002-08-10 | 2002-08-10 | Soft plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2559810Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206494A (en) * | 2018-02-28 | 2019-09-06 | 中国石油天然气股份有限公司 | Process pipe column matched with cable type oil pumping unit |
| CN111608904A (en) * | 2020-05-27 | 2020-09-01 | 青岛新胜石油机械有限公司 | Flexible sealing plunger pump |
-
2002
- 2002-08-10 CN CN 02274698 patent/CN2559810Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206494A (en) * | 2018-02-28 | 2019-09-06 | 中国石油天然气股份有限公司 | Process pipe column matched with cable type oil pumping unit |
| CN111608904A (en) * | 2020-05-27 | 2020-09-01 | 青岛新胜石油机械有限公司 | Flexible sealing plunger pump |
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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: 20030709 Termination date: 20100810 |