CN201495995U - Hollow sucker rod - Google Patents
Hollow sucker rod Download PDFInfo
- Publication number
- CN201495995U CN201495995U CN2009201730970U CN200920173097U CN201495995U CN 201495995 U CN201495995 U CN 201495995U CN 2009201730970 U CN2009201730970 U CN 2009201730970U CN 200920173097 U CN200920173097 U CN 200920173097U CN 201495995 U CN201495995 U CN 201495995U
- Authority
- CN
- China
- Prior art keywords
- rod
- welding
- hollow sucker
- sucker rod
- rod 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 - Lifetime
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model relates to a hollow sucker rod, aiming at overcoming the defects that because a rod body and a joint of the existing hollow sucker rod are welded by uniform cross section, and the welding part becomes invalid, so that the service life is short, and the production cost of oil extraction is increased. The hollow sucker rod comprises a rod body (1) and a threaded joint (2), wherein the inner diameter of the rod body (1) is the same as the inner diameter of the threaded joint (2); the rod body (1) is fixed and connected with the threaded joint (2) in a way of friction welding; and the welding end surfaces of the rod body (1) and the threaded joint (2) are not equal to each other, and the welding end surface of the threaded joint (2) is larger than the welding end surface of the rod body (1). The hollow sucker rod has the advantage that by adopting the non-uniform cross section welding technology, the tensile strength and the impact toughness of the welding part of the hollow sucker rod are improved, so that the service life of the hollow sucker rod is prolonged.
Description
Affiliated technical field
The utility model relates to the sucker rod that a kind of oil extraction is used, and especially relates to a kind of hollow rod.
Background technology
Hollow rod is to be welded to form with the nipple that has external screw thread and internal thread respectively by body of rod two ends, and friction-welding technique is the technology that the hollow rod manufacturing industry extensively adopts.Usually the welding end surface of friction welding is the welding of equal diameter cross section, then the welding position being carried out localized tempering handles, the mechanical performance of the hollow rod welding position of employing uniform section friction welding is lower, can only reach D utmost point sucker rod mechanics grade, the welding position is the main failure site of sucker rod, cause sucker rod low application life, the oil recovery cost of production increases.
The utility model content
For the body of rod and the joint that overcomes existing hollow rod adopts the uniform section welding, the welding position easily lost efficacy and causes sucker rod low application life, the deficiency that the oil recovery cost of production increases, the utility model provides a kind of hollow rod, this hollow rod adopts non-constant section friction-welding technique technology, can effectively improve the mechanical performance of hollow rod.
The technical scheme that its technical problem that solves the utility model adopts is: hollow rod comprises the body of rod, nipple, body of rod internal diameter is identical with the nipple internal diameter, the body of rod adopts the friction welding mode to fixedly connected with nipple, and the welding end surface of the body of rod and nipple is unequal; The welding end surface of nipple is greater than the welding end surface of the body of rod.
The beneficial effects of the utility model are, adopt the non-constant section solder technology, have improved the tensile strength and the impact toughness of hollow rod welding position, thereby improve the application life of hollow rod.
Description of drawings
Fig. 1 is the utility model hollow rod structural representation.
Among the figure: 1. the body of rod, 2. nipple.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
The utility model hollow rod, comprise the body of rod 1, nipple 2, one end of nipple 2 is a welding end surface, the other end is the nipple that has external screw thread or internal thread, the body of rod 1 internal diameter is identical with nipple 2 internal diameters, the body of rod 1 adopts the friction welding mode to fixedly connected with nipple 2, and the body of rod 1 is unequal with the welding end surface of nipple 2; The welding end surface of nipple 2 is greater than the welding end surface of the body of rod 1.
The utility model utilizes the non-constant section solder technology, the nipple 2 welding end surface external diameters of hollow rod are designed to greater than the body of rod 1 welding end surface external diameter, make the different rate of strain of appearance on the same frictional interface, final formation is not orthogonal to the axial weld seam of hollow rod, disperseed the performance weak area, can effectively improve the tensile strength and the impact toughness of hollow rod welding position, thereby improve the application life of hollow rod.
Claims (2)
1. a hollow rod comprises the body of rod, nipple, and body of rod internal diameter is identical with the nipple internal diameter, and the body of rod adopts the friction welding mode to fixedly connected with nipple, and it is characterized in that: the body of rod (1) is unequal with the welding end surface of nipple (2).
2. hollow rod according to claim 1 is characterized in that: the welding end surface of described nipple (2) is greater than the welding end surface of the body of rod (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201730970U CN201495995U (en) | 2009-09-09 | 2009-09-09 | Hollow sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201730970U CN201495995U (en) | 2009-09-09 | 2009-09-09 | Hollow sucker rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201495995U true CN201495995U (en) | 2010-06-02 |
Family
ID=42439203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201730970U Expired - Lifetime CN201495995U (en) | 2009-09-09 | 2009-09-09 | Hollow sucker rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201495995U (en) |
-
2009
- 2009-09-09 CN CN2009201730970U patent/CN201495995U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100602 |