CN2619045Y - Rail type oil pumping rod centralizer - Google Patents
Rail type oil pumping rod centralizer Download PDFInfo
- Publication number
- CN2619045Y CN2619045Y CN 03216936 CN03216936U CN2619045Y CN 2619045 Y CN2619045 Y CN 2619045Y CN 03216936 CN03216936 CN 03216936 CN 03216936 U CN03216936 U CN 03216936U CN 2619045 Y CN2619045 Y CN 2619045Y
- Authority
- CN
- China
- Prior art keywords
- centralizing
- sheath
- supporting positive
- positive cover
- centralizer
- 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
A rail-type sucker rod centralizer consists of a central rod and a centralizing sheath, is characterized in that the central rod is provided with cylinder shape. W shaped rails are arranged on the circumference of the center part. The trajectory extends along the axis of the centralizing, slides upward by 45 degrees and downward 45 degrees. Conical tube male thread is arranged on the upside of the rail. Conical tube female thread is arranged on the downside of the rail. The centralizing sheath is provided with cylinder shape. An axial oil guide groove with a certain radian is arranged on the outer periphery of the centralizing sheath. At least two guide pins are arranged on the periphery of the centralizing sheath. The centralizing sheath is sleeved on the central rod. The guide pin does not contact with the bottom of the rails. The outer diameter of the centralizing sheath is larger than the outer diameter of the sucker rod collar and smaller than the inner diameter of the oil pipe. The centralizing sheath can slide upward and downward on the centralizer axis along the rails.
Description
One, technical field: the utility model relates to the used rail mounted oil pumping rod centering device of a kind of rod-pumped well protection oil pipe.
Two, background technology: the used oil pumping rod centering device of present pumpingh well protection oil pipe has multiple, and first kind is that supporting positive cover is spacing on sucker rod, slides up and down; Second kind is with stop that supporting positive cover is spacing on sucker rod, can slide up and down with oily stream in spacing scope.More than two kinds certain centralizing function is arranged in application, but also have following defective, first kind of centralizer easily mill partially, the life-span is short, centralizer mill back does not partially just play centralizing function; Second kind of centralizer be oil stream and self gravitation slide up and down run into hard grind the time supporting positive cover just do not change, easily with centralizer inner periphery and the outer periphery mill partially, it is irregular that supporting positive cover is moved up and down, and causes centralizer weak point in application life.
Three, summary of the invention:
The purpose of this utility model is a kind of rail mounted oil pumping rod centering device of design.
Its technical scheme realizes in the following manner:
The rail mounted oil pumping rod centering device is made up of center-pole and supporting positive cover, it is characterized in that center-pole is cylindrical, middle part week side be provided with W shape track, track be along on the centralizer axis, respectively 2 45 ° up and down, top is provided with the Taper Pipe male thread, the bottom is provided with the Taper Pipe box thread; Supporting positive cover is cylindrical, its periphery is provided with the axial oil chute that has certain radian, only being provided with two guide fingers, supporting positive covers less on the supporting positive cover circumference is enclosed within on the center-pole, guide finger does not contact the track base, the supporting positive cover external diameter is greater than the rod collar external diameter, less than pipe aperture, supporting positive cover on the centralizer axis, on the lower edge slide.
Effect of the present utility model is:
1, the supporting positive cover of oil pumping rod centering device is met hard grind has the guide finger forced guiding to be difficult for blocking, and interior external diameter is difficult for mill partially.
2, track is made as two 45 °, following two 45 °, just in time 180 ° up and down of supporting positive covers, and the even life-span of wearing and tearing is long.
Four, description of drawings:
The structural representation of Fig. 1-track oil pumping rod centering device;
The structural representation of Fig. 2-rail mounted oil pumping rod centering device center-pole;
The deployed configuration schematic diagram of Fig. 3-Fig. 2 middle orbit.
Five, the specific embodiment:
For further disclosing this reality has novel technical scheme, elaborate by embodiment below in conjunction with Figure of description:
The utility model is made up of center-pole 1 and supporting positive cover 2, it is characterized in that center-pole 1 is cylindrical, middle part week side be provided with W shape track, track be along on the centralizer axis, two 45 ° of upward sliding two 45 °, downslide, top is provided with the Taper Pipe male thread, and the bottom is provided with the Taper Pipe box thread; Supporting positive cover 2 is cylindrical, its periphery is provided with the axial oil chute that has certain radian, only being provided with two guide fingers 3, supporting positive covers less on the supporting positive cover circumference is enclosed within on the center-pole, guide finger does not contact the track base, the supporting positive cover external diameter is greater than the rod collar external diameter, less than pipe aperture, supporting positive cover on the centralizer axis, on the lower edge slide.Guaranteed that oil pumping rod centering device wearing and tearing evenly, have improved its application life, thereby protected tube inner wall not worn and torn or grind thoroughly that rate during the production that improved pumpingh well has been saved the cost of workover cost and replacing oil pipe by sucker rod.
Claims (1)
1, a kind of rail mounted oil pumping rod centering device is made up of center-pole and supporting positive cover, it is characterized in that center-pole is cylindrical, the all sides in middle part are provided with W shape track, track be along on the centralizer axis, upward sliding two 45 °, glide two 45 °, top is provided with the Taper Pipe male thread, the bottom is provided with the Taper Pipe box thread; Supporting positive cover is cylindrical, its periphery is provided with the axial oil chute that has certain radian, only being provided with two guide fingers, supporting positive covers less on the supporting positive cover circumference is enclosed within on the center-pole, guide finger does not contact the track base, the supporting positive cover external diameter is greater than the rod collar external diameter, less than pipe aperture, supporting positive cover on the centralizer axis, on the lower edge slide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03216936 CN2619045Y (en) | 2003-04-30 | 2003-04-30 | Rail type oil pumping rod centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03216936 CN2619045Y (en) | 2003-04-30 | 2003-04-30 | Rail type oil pumping rod centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2619045Y true CN2619045Y (en) | 2004-06-02 |
Family
ID=34243225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03216936 Expired - Fee Related CN2619045Y (en) | 2003-04-30 | 2003-04-30 | Rail type oil pumping rod centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2619045Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832111A (en) * | 2010-04-28 | 2010-09-15 | 中国科学院力学研究所 | Bi-directionally sliding pup-joint coupling centralizer |
-
2003
- 2003-04-30 CN CN 03216936 patent/CN2619045Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832111A (en) * | 2010-04-28 | 2010-09-15 | 中国科学院力学研究所 | Bi-directionally sliding pup-joint coupling centralizer |
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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 |