CN202659172U - Triple-connection spiral centering device - Google Patents
Triple-connection spiral centering device Download PDFInfo
- Publication number
- CN202659172U CN202659172U CN 201220280756 CN201220280756U CN202659172U CN 202659172 U CN202659172 U CN 202659172U CN 201220280756 CN201220280756 CN 201220280756 CN 201220280756 U CN201220280756 U CN 201220280756U CN 202659172 U CN202659172 U CN 202659172U
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- centering
- body resistance
- strengthening tablets
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Abstract
The utility model discloses a triple-connection spiral centering device which comprises an elastic wear-resistant member, a plurality of centering sheets and a centering sheet pressing cap. The centering sheets are fixedly installed on the peripheral surface of the elastic wear-resistant member through the centering sheet pressing cap, corresponding installation holes are pre-set on the centering sheet pressing cap and the centering sheets, and screws penetrate through the installation holes to fixedly connect the centering sheet pressing cap and the centering sheets. The triple-connection spiral centering device has the advantages of being simple in structure, ingenious in design, good in wear-resisting property and capable of evenly centering an oil extracting device after the device is descended to a well. By means of the triple-connection spiral centering device, sleeve structures under the well are improved, qualities of oil wells are improved, and effects are obvious.
Description
Technical field
The utility model relates to the petroleum machinery field, specifically, specially refers to a kind of three spiral centering devices.
Background technology
In existing sucker-rod pumping system, no matter be straight well or inclined shaft, R a T all is relative motion in contact, therefore, exist inevitable wearing and tearing between sucker rod and the oil pipe, particularly deep-well and inclined shaft, sucker rod is easy to bending in oil pipe, the problem of serious sucker rod partial wear oil pipe occurs, behind the generation eccentric wear oil pipe and sucker rod can not be used, cause the oil well can't operation, oil well repair free period is short, increases operating cost, increases rod tube consumption, the oil well off-time is many, has reduced crude output.
In sum, for the deficiencies in the prior art, need especially a kind of three spiral centering devices, to solve above-mentioned problem.
The utility model content
The purpose of this utility model is to provide a kind of three spiral centering devices, by traditional centralizer is carried out structural improvement, prolongs its application life, has overcome the deficiency in the conventional art, thereby realizes the purpose of this utility model.
The technical problem that the utility model solves can realize by the following technical solutions:
A kind of three spiral centering devices comprise elastic reactance mill body, some body resistance-strengthening tablets and body resistance-strengthening tablets pressure cap, and described body resistance-strengthening tablets is installed on the outer peripheral face of elastic reactance mill body, and body resistance-strengthening tablets is by body resistance-strengthening tablets pressure cap and the fixed installation of elastic reactance mill body.
In an embodiment of the present utility model, the quantity of described body resistance-strengthening tablets is set to 6, and the section of body resistance-strengthening tablets is trapezoidal, and the surface programming of body resistance-strengthening tablets has spiral lamination.
In an embodiment of the present utility model, described body resistance-strengthening tablets pressure cap and body resistance-strengthening tablets all are preset with corresponding installing hole, pass described installing hole by screw between body resistance-strengthening tablets pressure cap and the body resistance-strengthening tablets and are connected and fixed.
The beneficial effects of the utility model are: simple in structure, design ingenious, can be to the even righting of extracting device of oil after going into the well, and have stronger anti-wear performance, not only improved the structure of down-hole casing, also improved the quality of oil well, effect is fairly obvious.
Description of drawings
Fig. 1 is the structural representation of a kind of three spiral centering devices described in the utility model.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with the specific embodiment, further set forth the utility model.
As shown in Figure 1, a kind of three spiral centering devices described in the utility model, comprise elastic reactance mill body 100, some body resistance-strengthening tablets 200 and body resistance-strengthening tablets pressure cap, described body resistance-strengthening tablets is installed on the outer peripheral face of elastic reactance mill body, and body resistance-strengthening tablets is by body resistance-strengthening tablets pressure cap and the fixed installation of elastic reactance mill body.
In an embodiment of the present utility model, the quantity of described body resistance-strengthening tablets is set to 6, and the section of body resistance-strengthening tablets is trapezoidal, and the surface programming of body resistance-strengthening tablets has spiral lamination.
In an embodiment of the present utility model, described body resistance-strengthening tablets pressure cap and body resistance-strengthening tablets all are preset with corresponding installing hole, pass described installing hole by screw between body resistance-strengthening tablets pressure cap and the body resistance-strengthening tablets and are connected and fixed.
The utility model is to adopt slide-valve automatic shutter structure, is connected on the sucker rod, and when the sucker rod down stroke, the up oil duct of opening on the centralizer body of guiding valve, during the sucker rod up stroke, the descending oil duct of closing on the centralizer body of guiding valve.Thereby by segmentation lifting fluid column, segmentation reduces load and the pump load of sucker rod, reduces the pump leakage, reduces the elastic elongation deformation of sucker rod, reduces loss of plunger stroke, thereby improves the effective travel of oil well pump, increases the pump barrel filling amount, improves pump efficiency.
The beneficial effects of the utility model are: simple in structure, design ingenious, can be to the even righting of extracting device of oil after going into the well, and have stronger anti-wear performance, not only improved the structure of down-hole casing, also improved the quality of oil well, effect is fairly obvious.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the manual just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. a spiral centering device is characterized in that, comprises elastic reactance mill body, some body resistance-strengthening tablets and body resistance-strengthening tablets pressure cap, and described body resistance-strengthening tablets is installed on the outer peripheral face of elastic reactance mill body, and body resistance-strengthening tablets is by body resistance-strengthening tablets pressure cap and the fixed installation of elastic reactance mill body.
2. a kind of three spiral centering devices according to claim 1 is characterized in that, the quantity of described body resistance-strengthening tablets is set to 6, and the section of body resistance-strengthening tablets is trapezoidal, and the surface programming of body resistance-strengthening tablets has spiral lamination.
3. a kind of three spiral centering devices according to claim 1 is characterized in that, described body resistance-strengthening tablets pressure cap and body resistance-strengthening tablets all are preset with corresponding installing hole, pass described installing hole by screw between body resistance-strengthening tablets pressure cap and the body resistance-strengthening tablets and are connected and fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220280756 CN202659172U (en) | 2012-06-15 | 2012-06-15 | Triple-connection spiral centering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220280756 CN202659172U (en) | 2012-06-15 | 2012-06-15 | Triple-connection spiral centering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202659172U true CN202659172U (en) | 2013-01-09 |
Family
ID=47454082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220280756 Expired - Fee Related CN202659172U (en) | 2012-06-15 | 2012-06-15 | Triple-connection spiral centering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202659172U (en) |
-
2012
- 2012-06-15 CN CN 201220280756 patent/CN202659172U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20180615 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |