CN2635896Y - Coupling centralising devcie for plug-in connected hollow sucker rod - Google Patents
Coupling centralising devcie for plug-in connected hollow sucker rod Download PDFInfo
- Publication number
- CN2635896Y CN2635896Y CN 03260427 CN03260427U CN2635896Y CN 2635896 Y CN2635896 Y CN 2635896Y CN 03260427 CN03260427 CN 03260427 CN 03260427 U CN03260427 U CN 03260427U CN 2635896 Y CN2635896 Y CN 2635896Y
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- CN
- China
- Prior art keywords
- centralizer
- centralizing
- pipe nipple
- plug
- centralizer body
- 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 coupling centralizing device for a plug-in connected hollow sucker rod which relates to a centralizing device used on oilfield. The existing centralizing device has a bad centralising effect in the oilfield. The utility model is composed of a pup joint (1), and a centralizing body (2) sheathed with the pup joint (1). Two spacing bulges (3) are arranged on the pup joint (1). The distance (H) of the two spacing bulges (3) is bigger than the length (G) of the centralizing body (2); the centralizing body (2) is sheathed with the pup joint (1) between the two spacing bulges (3), the inner diameter (J) of the centralizing body (2) is bigger than the outer diameter (K) of the pub joint (1), and is smaller than the outer diameter (M) of the two spacing bulges (3) simultaneously; the both ends of the pup joint (1) are the sector butting teeth (4). The utility model has the advantages of simple structure and easy production. The strength of the centralizing body is reinforced so that the centralizing body can not break easily; the sectional area is greatly improved, and the service life of the centralizing body is extended.
Description
Technical field: the utility model relates to a kind of centralizer that uses on the oil field.
Background technology: now the centralizer on the oil field is because independent centralizer body just, and it is big that it exists in work on sucker rod moving range, sets upright the bad problem of effect; And because the centralizer body shaft orientation moving range is big, so the effect of damming obviously, area of passage is little; And an independent centralizer body job exists the problem of insufficient strength, is very easy to broken and causes the holddown accident.
The utility model content: the purpose of this utility model is to provide a kind of effect that both can guarantee to set upright, can reduce the plug-in type hollow rod join hoop type centralizer of the flow resistance of extraction liquid again, it comprises pipe nipple 1, the centralizer body 2 that socket-connects with pipe nipple 1, described pipe nipple 1 is provided with two spacing preiections 3, distance H between two spacing preiections 3 is greater than the length G of centralizer body 2, described centralizer body 2 be socketed on two pipe nipples 1 between the spacing preiection 3 and the internal diameter J of centralizer body 2 greater than the external diameter K of pipe nipple 1, less than the external diameter M of spacing preiection 3, two terminations of described pipe nipple 1 are fan-shaped butt joint tooth body 4 simultaneously.The utility model is simple in structure, easy to manufacture, because centralizer body and pipe nipple volume are all smaller, so can be earlier with centralizer body cast solid structure, make after being socketed on the pipe nipple or the installation spacing preiection again, avoided need reserving the problem that angle is installed again on centralizer body in the past, it has increased the intensity of centralizer body, and because centralizer length is longer relatively, the radial dimension symmetry, stressed even, so centralizer body is not easy fragmentation; Owing to there is spacing preiection control centralizer body to move within the specific limits, so area of passage improves greatly,, to compare with former centralizer through test, the area of passage of the utility model centralizer can reach 1884mm
2, improved 57% than original; Centralizer body riding certain angle, up promotion centralizer body of extraction liquid and oil pipe generation relative motion, wearing and tearing have evenly prolonged the application life of centralizer, popularization of the present utility model reduces operating cost and has great importance prolonging the screw pump oil production well pump detection period.
Description of drawings: Fig. 1 is a structural representation of the present utility model, and Fig. 2 is the A-A sectional view of Fig. 1, and Fig. 3 is the structural representation of butt joint tooth body 4.
The specific embodiment: present embodiment comprises pipe nipple 1, the centralizer body 2 that socket-connects with pipe nipple 1, centralizer body 2 is for having the circular cylinder of inclined support 2-1, pipe nipple 1 is provided with two spacing preiections 3, distance H between two spacing preiections 3 is greater than the length G of centralizer body 2, described centralizer body 2 be socketed on two pipe nipples 1 between the spacing preiection 3 and the internal diameter J of centralizer body 2 greater than the external diameter K of pipe nipple 1, while is less than the external diameter M of spacing preiection 3, only in this way can guarantee just that centralizer body 2 is subjected to stopping of spacing preiection 3 and in limited scope, move, two terminations of described pipe nipple 1 are fan-shaped butt joint tooth body 4, fan-shaped butt joint tooth body 4 can make things convenient for being connected of centralizer and sucker rod, when operation, according to the quantity of job execution designing requirement and the degree of depth that is lowered to, screw bolt well φ 38 plug-in type hollow rod join hoop type centralizer are connected G.I.H with φ 38 plug-in type hollow rods, when ordinary production, sucker rod drives the screw pump rotation, the nylon centralizer body in the scope of sucker rod substitute restriction with sucker rod generation relative motion; The centralizer body inclined support contacts with tube inner wall simultaneously, and rod string is played supporting role, prevents the wearing and tearing of sucker rod and tube inner wall.
Claims (2)
1, a kind of plug-in type hollow rod join hoop type centralizer, it comprises pipe nipple (1), the centralizer body (2) that socket-connects with pipe nipple (1), it is characterized in that described pipe nipple (1) is provided with two spacing preiections (3), distance (H) between two spacing preiections (3) is greater than the length (G) of centralizer body (2), described centralizer body (2) be socketed in that pipe nipple (1) between two spacing preiections (3) is gone up and the internal diameter (J) of centralizer body (2) greater than the external diameter (K) of pipe nipple (1), less than the external diameter (M) of spacing preiection (3), two terminations of described pipe nipple (1) are fan-shaped butt joint tooth body (4) simultaneously.
2, plug-in type hollow rod join hoop type centralizer according to claim 1 is characterized in that described centralizer body (2) is for having the circular cylinder of inclined support (2-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03260427 CN2635896Y (en) | 2003-08-20 | 2003-08-20 | Coupling centralising devcie for plug-in connected hollow sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03260427 CN2635896Y (en) | 2003-08-20 | 2003-08-20 | Coupling centralising devcie for plug-in connected hollow sucker rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2635896Y true CN2635896Y (en) | 2004-08-25 |
Family
ID=34296445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03260427 Expired - Fee Related CN2635896Y (en) | 2003-08-20 | 2003-08-20 | Coupling centralising devcie for plug-in connected hollow sucker rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2635896Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832110A (en) * | 2010-04-28 | 2010-09-15 | 中国科学院力学研究所 | Optimal experimental method for coupling centralizer |
| 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
- 2003-08-20 CN CN 03260427 patent/CN2635896Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832110A (en) * | 2010-04-28 | 2010-09-15 | 中国科学院力学研究所 | Optimal experimental method for coupling centralizer |
| 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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040825 Termination date: 20100820 |