CN205225092U - Coupling - Google Patents
Coupling Download PDFInfo
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- CN205225092U CN205225092U CN201520977825.9U CN201520977825U CN205225092U CN 205225092 U CN205225092 U CN 205225092U CN 201520977825 U CN201520977825 U CN 201520977825U CN 205225092 U CN205225092 U CN 205225092U
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- China
- Prior art keywords
- wear
- box cupling
- resistant sleeve
- iron boron
- neodymium iron
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Abstract
The application discloses coupling, it includes body, wear -resisting cover, isolating device, inclosed cavity and neodymium iron boron iron prop. Wherein, body along lengthwise extension, the both ends of body are used for being connected with the sucker rod. Wear -resisting ways is established this is external. Isolating device sets up this is internal. Inclosed cavity by isolating device with the body form or by isolating device forms the neodymium iron boron iron prop is located in the cavity to magnetism through the neodymium iron boron iron prop realizes magnetism viscosity reduction effect. The utility model discloses a structure more than the embodiment adopts has following advantage: coupling in this application can directly be connected low cost with the sucker rod, this instrument simple structure, safe and reliable, easily extensively use widely in the oil field, this instrument is right the body and is adopted the nichrome powder coating to have the advantage that high wearing feature friction coefficient is low, fine magnetism viscosity reduction, the wax control effect of this instrument can reach several gausses' magnetism.
Description
Technical field
The utility model relate to a kind of oil extraction in oil field technical field, especially a kind of box cupling.
Background technology
In the recovery process to High angle, high wax content oil, crude oil is flowed earthward by shaft bottom, along with the reduction of temperature in pit shaft, viscosity of crude rises, when temperature is down to the wax precipitation point of crude oil, the shaft in wall of attachment can forms wax deposition phenomenon, add the flow resistance of crude oil, reduce production efficiency, add the load of oil pumper and the hot washing period of oil well.For above-mentioned technical problem, Chinese patent ZL00211429.1 discloses a kind of short circuit for well magnetic paraffin control viscosity reduction, this technique is by pup joint of sucker rod outer wrapping one deck alnico magnets, and in alnico magnets outer wrapping one deck resinous coat, alnico magnets have the magnetic of 12000 Gausses, good magnetic viscosity reducing effect can be realized, but in use, because some oil wells hole deviation degree is large, resinous coat is worn, the naked leakage of alnico magnets is caused to contact with production fluid in outside, the permanent magnet of current magnetization bar mostly is neodymium iron boron, naked leakage neodymium iron boron outside agrees to fragmentation very much under the effect of production fluid and hole deviation, cause oil well holddown.
Utility model content
In order to overcome the above-mentioned defect of prior art, the application's embodiment technical problem to be solved is to provide a kind of box cupling, and its wax-proof viscosity reducing is effective, and structure is simple, and has stronger anti-wear performance.
Concrete technical scheme of the present utility model is:
A kind of box cupling, it comprises:
Along the body that lengthwise extends, the two ends of described body are used for being connected with sucker rod;
Wear-resistant sleeve, described wear-resistant sleeve be set in described external;
Be arranged on described intrinsic spacer assembly;
Airtight chamber, it is formed by described spacer assembly and described body or is formed by described spacer assembly;
Neodymium iron boron iron prop, described neodymium iron boron iron prop is positioned at described chamber.
Preferably, the external surface of described wear-resistant sleeve has nichrome coating.
Preferably, described body is made up of 35crmo.
Preferably, described spacer assembly is made up of 35crmo.
Preferably, described wear-resistant sleeve can rotate relative to described body.
Preferably, described spacer assembly comprises the baffle plate that two lay respectively at described neodymium iron boron iron prop two ends.
Preferably, described baffle plate is fixedly connected with by screw thread with described body.
Preferably, the outside of described wear-resistant sleeve has for the contact site with oil pipe interior contact.
Preferably, described body is provided with stopping means at the two ends of described wear-resistant sleeve.
Embodiment of the present utility model adopts above structure, has the following advantages:
1, the box cupling in the application can directly be connected with sucker rod, with low cost;
2, this tool construction is simple, safe and reliable, is easy to oil field and extensively promotes the use of;
3, this instrument centralizer body adopts nichrome powder coating to have the low advantage of high-wearing feature coefficient of friction;
4, the good magnetic viscosity reduction of this instrument, wax control result, can reach the magnetic of several ten thousand Gausses.
Accompanying drawing explanation
Accompanying drawing described here only for task of explanation, and is not intended to limit the utility model scope of disclosure by any way.In addition, the shape of each parts in figure and proportional sizes etc. are only schematic, for helping understanding of the present utility model, are not the shape and the proportional sizes that specifically limit each parts of the utility model.Those skilled in the art, under instruction of the present utility model, can select various possible shape and proportional sizes to implement the utility model as the case may be.
Fig. 1 shows the structure chart of a kind of embodiment of the box cupling in the application.
Fig. 2 shows the schematic cross-section of box cupling in Fig. 1.
The Reference numeral of above accompanying drawing is: 1, body; 11, stopping means; 2, wear-resistant sleeve; 3, spacer assembly; 4, neodymium iron boron iron prop.
Detailed description of the invention
By reference to the accompanying drawings with the description of the utility model detailed description of the invention, can clearly understand details of the present utility model.But detailed description of the invention of the present utility model described here, only for explaining the purpose of this utility model, and can not to be understood as by any way be to restriction of the present utility model.Under instruction of the present utility model, technician can conceive based on distortion possible arbitrarily of the present utility model, and these all should be regarded as belonging to scope of the present utility model.
Shown in seeing figures.1.and.2, this application discloses a kind of box cupling, it comprises body 1, wear-resistant sleeve 2, spacer assembly 3, airtight chamber and neodymium iron boron iron prop 4.Wherein, body 1 extends along lengthwise, and the two ends of described body 1 are used for being connected with sucker rod.Described wear-resistant sleeve 2 is set in outside described body 1.Spacer assembly 3 is arranged in described body 1.Described airtight chamber is formed by described spacer assembly 3 and described body 1 or is formed described neodymium iron boron iron prop 4 by described spacer assembly 3 and is positioned at described chamber, thus realizes magnetic viscosity reducing effect by the magnetic of neodymium iron boron iron prop 4.
Concrete, with reference to shown in Fig. 1, in the embodiment of the application, body 1 can be made up of 35crmo.Body 1 is substantially cylindrical, and body 1 extends along an axis direction (vertical direction in figure).The two ends of described body 1 have threaded portion, to be connected removedly with sucker rod.Generally speaking, the length of sucker rod is roughly 50 meters, and thus this box cupling can 50 meters of arrangements one, and then can tell on to each section of sucker rod.By fit on one on every 50 sucker rods, its outer sleeve has antiwear characteristic, extend the anti-wear performance of instrument, the tuberculosis of the effective mode cerotin of its inner neodymium iron boron iron prop 4 energy, avoid the blocking of crude oil wax to runner, effectively can extend wax control tool life, avoid because magnet fragmentation causes the problem of Ka Jing.
In the present embodiment, wear-resistant sleeve 2 is set on body 1, and the outer rim of wear-resistant sleeve 2 can be conflicted with tube inner wall, thus wear-resistant sleeve 2 and tube inner wall is fitted.In one preferred embodiment, in order to improve the anti-wear performance of wear-resistant sleeve 2, wear-resistant sleeve 2 can be made up of 35crmo, and the external surface of wear-resistant sleeve 2 has nichrome coating.
In the present embodiment, in order to wear-resistant sleeve 2 and tube inner wall be fitted further, wear-resistant sleeve 2 can opposing body 1 rotate, thus is applicable to the oil well of High angle.Certainly in order to increase the frictional force of wear-resistant sleeve 2 and tube inner wall further, the outside of described wear-resistant sleeve 2 has for the contact site with oil pipe interior contact, thus increases the contact area of wear-resistant sleeve 2 and tube inner wall.Preferably, this contact site can be plane.
In the present embodiment, described spacer assembly 3 is made up of 35crmo.Spacer assembly 3 is arranged on the inside of body 1, and spacer assembly 3 and body 1 form airtight chamber.In order to easy for installation, spacer assembly 3 can comprise the baffle plate that two lay respectively at described neodymium iron boron iron prop 4 two ends.Described baffle plate is fixedly connected with by screw thread with described body 1.Certain, in other optional embodiments, spacer assembly 3 can be integrated structure, and airtight chamber is formed by described spacer assembly 3.
In one preferred embodiment, described body 1 is provided with stopping means 11 at the two ends of described wear-resistant sleeve 2, thus can limit the position of wear-resistant sleeve 2.
Each embodiment in this manual all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.
Above-mentioned embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed within protection domain of the present utility model.
Claims (9)
1. a box cupling, is characterized in that, it comprises:
Along the body that lengthwise extends, the two ends of described body are used for being connected with sucker rod;
Wear-resistant sleeve, described wear-resistant sleeve be set in described external;
Be arranged on described intrinsic spacer assembly;
Airtight chamber, it is formed by described spacer assembly and described body or is formed by described spacer assembly;
Neodymium iron boron iron prop, described neodymium iron boron iron prop is positioned at described chamber.
2. box cupling according to claim 1, is characterized in that, the external surface of described wear-resistant sleeve has nichrome coating.
3. box cupling according to claim 1, is characterized in that, described body is made up of 35crmo.
4. box cupling according to claim 1, is characterized in that, described spacer assembly is made up of 35crmo.
5. box cupling according to claim 1, is characterized in that, described wear-resistant sleeve can rotate relative to described body.
6. box cupling according to claim 1, is characterized in that, described spacer assembly comprises the baffle plate that two lay respectively at described neodymium iron boron iron prop two ends.
7. box cupling according to claim 6, is characterized in that, described baffle plate is fixedly connected with by screw thread with described body.
8. box cupling according to claim 1, is characterized in that, the outside of described wear-resistant sleeve has for the contact site with oil pipe interior contact.
9. box cupling according to claim 1, is characterized in that, described body is provided with stopping means at the two ends of described wear-resistant sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520977825.9U CN205225092U (en) | 2015-12-01 | 2015-12-01 | Coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520977825.9U CN205225092U (en) | 2015-12-01 | 2015-12-01 | Coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205225092U true CN205225092U (en) | 2016-05-11 |
Family
ID=55900166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520977825.9U Active CN205225092U (en) | 2015-12-01 | 2015-12-01 | Coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205225092U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481286A (en) * | 2016-11-28 | 2017-03-08 | 无锡金顶石油管材配件制造有限公司 | A kind of change screw thread tubing coupling |
| CN106801583A (en) * | 2016-12-29 | 2017-06-06 | 中国石油天然气股份有限公司 | Anti-corrosion safety oil passageway box cupling |
-
2015
- 2015-12-01 CN CN201520977825.9U patent/CN205225092U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481286A (en) * | 2016-11-28 | 2017-03-08 | 无锡金顶石油管材配件制造有限公司 | A kind of change screw thread tubing coupling |
| CN106801583A (en) * | 2016-12-29 | 2017-06-06 | 中国石油天然气股份有限公司 | Anti-corrosion safety oil passageway box cupling |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |