CN2139625Y - Sealing device for oil-pumping polish rod - Google Patents
Sealing device for oil-pumping polish rod Download PDFInfo
- Publication number
- CN2139625Y CN2139625Y CN 92243413 CN92243413U CN2139625Y CN 2139625 Y CN2139625 Y CN 2139625Y CN 92243413 CN92243413 CN 92243413 CN 92243413 U CN92243413 U CN 92243413U CN 2139625 Y CN2139625 Y CN 2139625Y
- Authority
- CN
- China
- Prior art keywords
- oil
- box body
- polish rod
- pumping polish
- sealing device
- 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 provides a polish-rod sealing device for pumping oil by a sucker rod in an oil field, which is mainly composed of a press cap, a sealing packing, a box body and a lower joint, wherein righting sleeves are arranged on the upper end and the lower end of the sealing packing and the upper end of the inner wall of the lower joint and are made of abrasion-proof non-metallic materials with sufficient stiffness, and the box body has an eccentric adjusting structure. The polish-rod sealing device can effectively prevent or relieve eccentric abrasion, and the utility model has the advantages of wide range of application, reliable seal, simple structure, small size, long service life and convenient maintenance.
Description
The utility model relates to the aboveground oil pumping polish rod sealer of a kind of oil field sucker rod pumping, belongs to mechanical oil recovery well head corollary apparatus.
In sucker rod pumping well manufacturing process, because the existence of oil pumper and wellhead for production alignment error, be difficult to guarantee that polished rod is concentric fully with well head, and offset direction and size also change in running, cause polished rod eccentric wear seal in varying degrees, its wearing and tearing are accelerated, can be occurred the direct friction of polished rod and steel part when serious, cause the well head leakage of oil.Therefore, the application life of conventional polished rod sealer is very short, and the phenomenon in crude oil pollution oil production equipment and well site often takes place, and makes rate reduction when recovering the oil.For addressing the above problem, Chinese patent 90204313.7, " novel oil pumping polish rod sealer " discloses a technical scheme, this scheme adopts the hollow ball articulated body of two ends dribbling face, its upper end is connected with seal box, and the lower end is connected with following ball pivot seat, can make seal box follow oil pumping polish rod and produce equidirectional horizontal movement, thereby alleviate the eccentric wear phenomenon, prolong sealer application life.But this scenario-frame more complicated, processing and manufacturing are also difficult, the cost height.
The purpose of this utility model is, provides a kind of and can prevent or alleviate polished rod and seal eccentric wear, and is simple in structure, easily manufactured, and sealing is reliable, the oil pumping polish rod sealer of sealed packing long service life.
Technical solution of the present utility model is achieved in that a kind of oil pumping polish rod sealer, form by pressure cap, gland, box body, sealed packing and lower contact, above the sealed packing or upper and lower surface be provided with supporting positive cover.Also two supporting positive covers can be set below sealed packing, one of them is located at lower contact inwall upper end, and the box body lower end is the ring-type eccentric disc.Box body both can adopt to be threaded with lower contact and also can adopt bolt to be connected.The supporting positive cover of this polished rod sealer is made by the wear-resisting nonmetals with enough rigidity.
Oil pumping polish rod sealer described in the utility model, compare with similar polished rod sealer, have simple in structure, easily manufactured, with low cost characteristics, and can prevent or alleviate the eccentric wear phenomenon effectively, prolong the application life of sealed packing greatly, reduce the line service amount, save human and material resources, be suitable for extensive employing.
Further specify two embodiment of the present utility model below in conjunction with accompanying drawing.
Fig. 1 is used for polished rod for the utility model and well head nonconcentricity deviation is less, or requires polished rod sealer size structural representation hour.
Fig. 2 is used for polished rod and the well head nonconcentricity deviation structural representation when big for the utility model.
Among the figure: (1) is pressure cap, (2) gland, and (3), (7), (10) are supporting positive cover, (4) sealed packing, (5) box body, (6) sealing ring, (8) lower contact, (9) trim ring.The eccentric wear of polished rod is advocated and will be born by supporting positive cover, and supporting positive cover usefulness is added with wear-resisting and the plastics self-lubricating material are made.Among Fig. 1, supporting positive cover both can only be located at below the sealed packing, but also upper and lower faces is all established supporting positive cover, and the latter sets upright better effects if; The lower end and the corresponding sealed packing at packing place are installed in the box body (5), can be cylindrical, but also as shown in Figure 2 truncated cone body shape, and sealed packing (4) has identical shaped; Box body (5) and lower contact (8) are with being threaded, and there is sealing ring (6) centre.Among Fig. 2, box body (5) lower end is the ring-type eccentric disc, fuses by trim ring (9) and bolt with lower contact (8), and there is sealing ring (6) centre, translation or rotation change the relative position of box body and lower contact (8), the nonconcentricity of polished rod and sealed packing (4) can be adjusted to minimum.
Claims (3)
1, a kind of oil pumping polish rod sealer is made up of pressure cap, gland, box body, sealed packing and lower contact, it is characterized in that below the sealed packing or upper and lower surface is provided with supporting positive cover.
2, oil pumping polish rod sealer according to claim 1 is characterized in that also two supporting positive covers being set below sealed packing, and one of them is located at lower contact inwall upper end, and the box body lower end is the ring-type eccentric disc.
3, oil pumping polish rod sealer according to claim 1 is characterized in that supporting positive cover made by wear-resisting nonmetals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92243413 CN2139625Y (en) | 1992-12-12 | 1992-12-12 | Sealing device for oil-pumping polish rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92243413 CN2139625Y (en) | 1992-12-12 | 1992-12-12 | Sealing device for oil-pumping polish rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2139625Y true CN2139625Y (en) | 1993-08-04 |
Family
ID=33782971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92243413 Expired - Fee Related CN2139625Y (en) | 1992-12-12 | 1992-12-12 | Sealing device for oil-pumping polish rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2139625Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437733A (en) * | 2013-08-19 | 2013-12-11 | 东营睿智友亮石油设备有限公司 | Well-mouth polished-rod centralizing sealer |
-
1992
- 1992-12-12 CN CN 92243413 patent/CN2139625Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437733A (en) * | 2013-08-19 | 2013-12-11 | 东营睿智友亮石油设备有限公司 | Well-mouth polished-rod centralizing sealer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |