CN2568801Y - Short section wax scraping centering guide of self rotating sucker rod - Google Patents
Short section wax scraping centering guide of self rotating sucker rod Download PDFInfo
- Publication number
- CN2568801Y CN2568801Y CN 02235936 CN02235936U CN2568801Y CN 2568801 Y CN2568801 Y CN 2568801Y CN 02235936 CN02235936 CN 02235936 CN 02235936 U CN02235936 U CN 02235936U CN 2568801 Y CN2568801 Y CN 2568801Y
- Authority
- CN
- China
- Prior art keywords
- centering
- short section
- sucker rod
- centralizer
- rod
- 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 short section wax scraping centering guide of a self rotating sucker rod. The wax scraping centering guide is composed of a centering short section and a centering body, wherein, the centering short section is of an integral body, injection molding is carried out on the centering short section, a gap of 0.5 to 1.5 mm is reserved between the centering body and a rod body of the short section, and the centering body can rotate and move up and down. When the utility model is in use, the external surface of the centering body is provided with at least two rotating backflow grooves. As a result, when the centering guide is at work, the rotation of the centering body is generated by the shock of oil flow, and thereby, convex corners of the centering body, which contact an oil pipe, change constantly, the surface of the centering body is uniformly worn out, the local wear of the centering guide is reduced, and the service life of the centering guide is extended. The utility model also has the action of automatic paraffin removal so that a sucker rod and the oil pipe are effectively protected. The integrated design of the short section leads to reduced accidents of the rupture of the rod body.
Description
Technical field
The utility model relates to the self-rotary sucker rod substitute paraffin cutting centralizer that a kind of oil field sucker rod pump mechanical oil well uses.
Background technology
The pipe nipple centralizer that the sucker rod that existing oil field sucker rod pump mechanical oil well uses adopts is generally two types: a class is that the direct injection moulding of nylon centralizer body is fixed on the centering short segment, this pipe nipple centralizer can move up and down in oil pipe with sucker rod, its centralizer body does not rotate, the nylon centralizer body has only indivedual stupefied to contact with oil pipe, contact area is little, the centralizer body wearing and tearing of centralizer are very fast, and application life is short.It is another kind of for the centralizer body of injection mo(u)lding is penetrated the pipe nipple that processes, this class pipe nipple is made up of two parts, a part is the body of rod that single head band sucker rod connecting thread is used to install centralizer body, and another part is for connecting reducing joint or the box cupling of setting upright the body of rod and sucker rod.Because the many structures in its coupling part are complicated, the disconnected fault of taking off easily takes place in the body of rod.
Summary of the invention
The purpose of this utility model is short application life in order to overcome existing centralizer, disconnected take off fault and paraffin cutting weak effect easily take place in the body of rod, it is an integral body that a kind of centering short segment is provided, centralizer body can move axially on the centering short segment body of rod, and can freely rotate around the centering short segment body of rod, long service life, simple in structure, dependable performance, the self-rotary sucker rod substitute paraffin cutting centralizer with automatic wax removal effect.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions.
The utility model self-rotary sucker rod substitute paraffin cutting centralizer is made up of monolithic centering short segment 1 and centralizer body 2, described have the centralizer body 2 direct injection mouldings of two above spiral refluence grooves to be installed on the monolithic centering short segment 1, keeping centralizer body internal diameter and centering short segment crest clearance 3 is the 0.5-1.5 millimeter, and centralizer body can be moved up and down on centering short segment and rotate freely.Described, centering short segment 1 is an integral body, and upper and lower side is a screw.Can an end be screw also, the other end be a screw rod.
Compared with prior art the beneficial effects of the utility model are: 1 can effectively strengthen the wax on scraping oil pipe and the centering short segment, slows down condensing of wax.2 slow down the rate of wear of centralizer body.3 can alleviate the bending of sucker rod when descending, reduce loss of plunger stroke, improve the operating efficiency of pump, alleviate the whiplash phenomenon of sucker rod in liquid simultaneously, have improved the stressing conditions of sucker rod, have reduced break-off accident, prolong the application life of well workover cycle and centralizer.
Appended drawings 1 is among the structure sectional view (see figure 1) accompanying drawing 2 of the present utility model A-----A sectional view (see figure 2) figure that is accompanying drawings 1: monolithic centering short segment 1 centralizer body, 2 centralizer body internal diameters and centering short segment crest clearance 3
The specific embodiment
Below in conjunction with accompanying drawing and the specific embodiment the utility model is done and to be described in further detail:
Illustrate in conjunction with Fig. 2 that with Fig. 1 this self-rotary sucker rod substitute paraffin cutting centralizer is that holistic centering short segment 1 and centralizer body 2 are formed by the body of rod and upper and lower side screw thread.Centralizer body 2 adopts by the directly injection mo(u)lding on centering short segment 2 of nylon that is difficult for wax deposition, intensity height, shock-resistant, wear resistant corrosion resistant, the external diameter of centralizer body internal diameter and centering short segment keeps 0.5-1.5 mm clearance 3, external diameter is then less than 4 millimeters of pipe apertures, make this self-rotary sucker rod substitute paraffin cutting centralizer on the centering short segment body of rod, to move axially, and can freely rotate around the centering short segment body of rod.The adjacent sucker rod that only need be threaded by the upper and lower side of centering short segment among Fig. 11 in actual the use gets final product.
Thereby play the minimizing rod parting, strengthen the wax removal effect, reach the purpose that uniform wear increases the service life.
Claims (2)
1, self-rotary sucker rod substitute paraffin cutting centralizer, it is made up of monolithic centering short segment (1), centralizer body (2), it is characterized in that having the direct injection moulding of centralizer body (2) of two above spiral refluence grooves to be installed on the monolithic centering short segment (1), keep centralizer body internal diameter and centering short segment crest clearance (3) 0.5～1.5mm, there is the refluence groove of at least two rotations on the centralizer body surface.
2, self-rotary sucker rod substitute paraffin cutting centralizer according to claim 1 is characterized in that; Centering short segment (1) be one on the whole the lower end be screw, also can an end for the screw other end for being screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02235936 CN2568801Y (en) | 2002-06-04 | 2002-06-04 | Short section wax scraping centering guide of self rotating sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02235936 CN2568801Y (en) | 2002-06-04 | 2002-06-04 | Short section wax scraping centering guide of self rotating sucker rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2568801Y true CN2568801Y (en) | 2003-08-27 |
Family
ID=33710337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02235936 Expired - Fee Related CN2568801Y (en) | 2002-06-04 | 2002-06-04 | Short section wax scraping centering guide of self rotating sucker rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2568801Y (en) |
-
2002
- 2002-06-04 CN CN 02235936 patent/CN2568801Y/en not_active Expired - Fee Related
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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 |