CN2160748Y - Steel ball type centralising device for sucker rod - Google Patents
Steel ball type centralising device for sucker rod Download PDFInfo
- Publication number
- CN2160748Y CN2160748Y CN 93215916 CN93215916U CN2160748Y CN 2160748 Y CN2160748 Y CN 2160748Y CN 93215916 CN93215916 CN 93215916 CN 93215916 U CN93215916 U CN 93215916U CN 2160748 Y CN2160748 Y CN 2160748Y
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- CN
- China
- Prior art keywords
- steel ball
- steel
- skeleton
- ball
- centering device
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- Expired - Fee Related
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Abstract
The utility model relates to a steel ball type centralizing device for an oil pumping rod used for the mechanical oil exploitation well of an oil field. The steel ball type centralizing device for an oil pumping rod used for the mechanical oil exploitation well of an oil field is composed of a body, a steel ball, a steel ball frame, a lock ring, and a pin. The steel ball frame with the steel ball is sheathed on the body. The part of the steel ball exposes the steel ball frame. The steel ball frame is positioned on the body by the lock ring. The lock ring is fixed on the body by the pin. The utility model has the advantages of simple structure and small oil flow resistance.
Description
The utility model relates to the oil pumping rod centering device that a kind of oil field machinery oil well is used.
In the mechanical oil recovery process of oil field directional well, for guaranteeing sucker rod function smoothly in oil pipe, to use oil pumping rod centering device usually, oil pumping rod centering device commonly used at present has roller type oil pumping rod centering device and steel ball connotative oil pumping rod centering device.The roller type oil pumping rod centering device is that roller is housed on centralizer body, and its difficulty of processing is big, and rolling frictional resistance is also big.And steel ball connotative oil pumping rod centering device, as number of patent application 92202398.0 " sucker rod rolling centering dropout prevention device ", its ball size is less, overall dimensions is bigger, thereby the oil flow channel between centralizer and oil pipe is narrow and small, and oil flow resistance increased when sucker rod was descending, and it is crooked that sucker rod is produced, and increased loss of plunger stroke, reduced the pump efficiency and the crude output of oil well pump.
The purpose of this utility model is to provide a kind of simple in structure, and rolling frictional resistance is little, the oil pumping rod centering device that oil flow channel is big.
The utility model is made up of body (1), steel ball (2), steel ball skeleton (3), lock ring (4), pin (5).The steel ball skeleton (3) of band steel ball (2) is sleeved on the body (1), and steel ball (2) part is exposed steel ball skeleton (3), and lock ring (4) is positioned steel ball skeleton (3) on the body (1), and pin (5) is fixed in lock ring (4) on the body (1).
Fig. 4 is a steel-ball type oil pumping rod centering device lock ring structural representation.
The utility model is further specified as follows below in conjunction with drawings and Examples:
Embodiment: shown in Fig. 1-1, Fig. 1-2 and Fig. 1-3, the utility model is to be with two groups of steel ball skeletons (3) that respectively contain three steel balls (2) on body (1), the circumference that three steel balls (2) parts is exposed steel ball skeleton (3) and prolonged steel ball skeleton (3) be separated by 120 ° evenly distributed, lock ring (4) is fixed in steel ball skeleton (3) on the body (1), and pin (5) is positioned lock ring (4) on the body (1).
Shown in Fig. 2-1, Fig. 2-2 and Fig. 2-3, body of the present utility model (1) is a cylinder, its end has the sucker rod internal thread, the other end has the sucker rod external screw thread, prolong axis direction at the circumferential surface of body (1) and have two groups of three arc grooves that are divided into 120 ° mutually, one group of arc groove wherein is through whole body (1), another group starts from external screw thread one end of body (1), terminate in the middle part of body (1), the spacing of tanks of two groups of arc grooves is 60 °, at the root of sucker rod external screw thread one end of body (1) one section screw thread is arranged in addition.
Shown in Fig. 3-1 and Fig. 3-2, steel ball skeleton of the present utility model (3) is a torus, its internal diameter is slightly larger than the diameter of body (1), have three equably every 120 ° and deposit the ball skeleton on the wall of steel ball skeleton (3), three are deposited the ball skeleton is the bossy body that has circular port on the wall of steel ball skeleton (3).
As shown in Figure 4, lock ring of the present utility model (4) is a tapped torus that pin-and-hole is arranged.
Body (1) is a cylinder, its end has the sucker rod internal thread, the other end has the sucker rod external screw thread, prolong axis direction on the surface of body (1) and have several arc grooves, arc groove can be every 120 ° evenly distributed three, such arc groove can be two groups, and the spacing of tanks of every group of arc groove is 60 °, at the root of outer sucker rod screw thread one end of body (1) one section screw thread is arranged in addition.
Steel ball skeleton (3) is the torus that an internal diameter is slightly larger than the diameter of body (1), is uniform-distribution with several and deposits the ball skeleton on the wall of steel ball skeleton (3), three 120 ° of evenly distributed opening bossy bodies of being separated by depositing the ball skeleton and can be.
Lock ring (4) is a tapped torus that has pin-and-hole.
The utility model (as shown in Figure 1) and number of patent application are that 92202398.0 " sucker rod rolling centering dropout prevention device " compared, its rolling set upright the part except that all having the little advantage of rolling frictional resistance, also have simple in structure, easy for installation, provide oil flow channel big characteristics.
Description of drawings:
Fig. 1-1 is a steel-ball type oil pumping rod centering device structural front view.
Fig. 1-2 is that the A of steel-ball type oil pumping rod centering device front view is to sectional view.
Fig. 1-3 is that the B of steel-ball type oil pumping rod centering device front view is to sectional view.
Fig. 2-1 is a steel-ball type oil pumping rod centering device body construction front view.
Fig. 2-2 is that the A of steel-ball type oil pumping rod centering device body front view is to sectional view.
Fig. 2-3 is that the B of steel-ball type oil pumping rod centering device body front view is to sectional view.
Fig. 3-1 is a steel-ball type oil pumping rod centering device steel ball cage construction front view.
Fig. 3-2 is that the A of steel-ball type oil pumping rod centering device steel ball cage construction front view is to view.
Claims (4)
1, the steel-ball type oil pumping rod centering device used of a kind of oil field machinery oil, it is made up of body (1), steel ball (2), steel ball skeleton (3), lock ring (4), pin (5), it is characterized in that being sleeved on the body (1) with the steel ball skeleton (3) of steel ball (2), steel ball (2) part is exposed skeleton (3), lock ring (4) is positioned steel ball skeleton (3) on the body (1), and pin (5) is fixed in lock ring (4) on the body (1).
2, steel-ball type oil pumping rod centering device as claimed in claim 1, it is characterized in that body (1) is a cylinder, its end has the sucker rod internal thread, the other end has the sucker rod external screw thread, surface at body (1) has several arc grooves along axis direction, and arc groove is that such arc groove is two groups every 120 ° evenly distributed three, the spacing of tanks of every group of arc groove is 60 °, at the root of sucker rod external screw thread one end of body (1) one section screw thread also in addition.
3, steel-ball type oil pumping rod centering device as claimed in claim 1 is characterized in that steel ball skeleton (3) is the torus that an internal diameter is slightly larger than body (1) diameter, is uniform-distribution with several and deposits the ball skeleton on the wall of steel ball skeleton (3).
4, steel-ball type oil pumping rod centering device as claimed in claim 3 is characterized in that the ball skeleton of depositing on the steel ball skeleton (3) is three 120 ° of evenly distributed opening bossy bodies of being separated by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93215916 CN2160748Y (en) | 1993-06-10 | 1993-06-10 | Steel ball type centralising device for sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93215916 CN2160748Y (en) | 1993-06-10 | 1993-06-10 | Steel ball type centralising device for sucker rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2160748Y true CN2160748Y (en) | 1994-04-06 |
Family
ID=33796265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93215916 Expired - Fee Related CN2160748Y (en) | 1993-06-10 | 1993-06-10 | Steel ball type centralising device for sucker rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2160748Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314478A (en) * | 2014-07-28 | 2015-01-28 | 王福成 | Centering anti-eccentric anti-waxing sucker-rod coupling |
| CN106014270A (en) * | 2016-05-13 | 2016-10-12 | 邓义龙 | Drill rod assembly for rock engineering |
-
1993
- 1993-06-10 CN CN 93215916 patent/CN2160748Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314478A (en) * | 2014-07-28 | 2015-01-28 | 王福成 | Centering anti-eccentric anti-waxing sucker-rod coupling |
| CN106014270A (en) * | 2016-05-13 | 2016-10-12 | 邓义龙 | Drill rod assembly for rock engineering |
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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 |