CN201621394U - High-sealing oil bushing threaded connector - Google Patents
High-sealing oil bushing threaded connector Download PDFInfo
- Publication number
- CN201621394U CN201621394U CN201020013334XU CN201020013334U CN201621394U CN 201621394 U CN201621394 U CN 201621394U CN 201020013334X U CN201020013334X U CN 201020013334XU CN 201020013334 U CN201020013334 U CN 201020013334U CN 201621394 U CN201621394 U CN 201621394U
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- Prior art keywords
- face
- conical surface
- box cupling
- sealing
- high sealing
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- Expired - Lifetime
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Abstract
The utility model discloses a high-sealing oil bushing threaded connector, which comprises a bushing body and a hoop which are connected via thread. The end of outer thread of the bushing body is provided with an outer sealing combining surface, the root of inner thread of the hoop is provided with an inner sealing combining surface, the outer sealing combining surface comprises a spherical surface, the outer end of the spherical surface is provided with a bushing body positioning end surface, the inner sealing combining surface comprises a conical surface matching with the spherical surface, the bottom end of the conical surface is provided with a hoop positioning end surface, and the spherical surface is in interference fit with the conical surface at an adhering position of the bushing body positioning end surface and the hoop positioning end surface. By adopting the spherical surface to seal the conical surface, interference magnitude can fluctuate within a larger range without affecting sealing effect, inner dimension, outer dimension and angles are not required strictly like seal of two conical surfaces, and therefore, the high-sealing oil bushing threaded connector avoids affecting sealing effect as the interference magnitude does not meet design requirements, lowers process cost, increases product yield and solves problems that in the prior art special covering sealing surfaces are easy to be scratched and agglutinated due to over-concentrated stresses.
Description
Technical field
The utility model relates to a kind of oil casing threaded joint.
Background technique
Development along with petroleum industry, the exploitation of deep-well, ultradeep well, horizontal well is more and more, under the situation of the continuous deterioration of oil recovery hole condition, traditional oil casing threaded structural type, its sealability and Economy can not satisfy the requirement of oil exploitation technology and cost of winning.Specifically, traditional conical surface requires very strict to the sealing configuration of conical surface because of internal outside dimension and angle, the situation of sealing effect appears having a strong impact on because magnitude of interference does not reach designing requirement easily, and the stress at the sealing surface place of special button is too concentrated, there is the problem that scratches bonding easily, the stress distribution at sealing surface place is unreasonable, has increased the probability of bonding damage, has increased accident potential.
The model utility content
Technical problem to be solved in the utility model provides a kind of good sealing effect, uses the oil casing threaded joint of economical strong high sealing.
For solving the problems of the technologies described above, the technical solution of the utility model is: the oil casing threaded joint of high sealing, comprise the body and the box cupling that are threaded, the externally threaded end of described body is provided with the external sealed combinating face, the root of described box cupling internal thread is provided with the interior seal combination face that cooperates with described external sealed combinating face, described external sealed combinating face comprises the ball face, and the outer end of the described ball face of described body is provided with body location end face; The seal combination face comprises the conical surface that cooperates with described ball face in described, and the bottom of described conical surface is provided with box cupling location end face; In described body location end face and the end face applying of described box cupling location position, described ball face and described conical surface interference fit.
As optimized technical scheme, the big end of described conical surface is near described box cupling female end, and the tapering of described conical surface is 10 °～35 °.
As optimized technical scheme, the radius of described ball face is 3mm～20mm.
As optimized technical scheme, be provided with body cylinder transitional surface between described ball face and the described body outside thread, be provided with box cupling cylinder transitional surface between described conical surface and the described box cupling internal thread, the diameter of described body cylinder transitional surface is less than the diameter of described box cupling cylinder transitional surface.
As optimized technical scheme, described body location end face is the inverted cone surface that is arranged on described body end, and the tapering of described inverted cone surface is 0 °～-20 °.
As optimized technical scheme, described box cupling location end face is the conical surface that is arranged on described box cupling conical surface outer end, and described conical surface and described inverted cone surface are fitted.
As optimized technical scheme, between described box cupling location end face and the described conical surface is interior arc transition face, between described body location end face and the described ball face is the external arc transitional surface, and described interior arc transition radius surface is less than the radius of described external arc transitional surface.
As optimized technical scheme, described interior arc transition radius surface is less than 0.5mm, and the radius of described external arc transitional surface is greater than 0.5mm.
Owing to adopted technique scheme, the oil casing threaded joint of high sealing, comprise the body and the box cupling that are threaded, the externally threaded end of described body is provided with the external sealed combinating face, the root of described box cupling internal thread is provided with the interior seal combination face that cooperates with described external sealed combinating face, described external sealed combinating face comprises the ball face, and the outer end of the described ball face of described body is provided with body location end face; The seal combination face comprises the conical surface that cooperates with described ball face in described, and the bottom of described conical surface is provided with box cupling location end face; In described body location end face and end face applying position, described box cupling location, described ball face and described conical surface interference fit; Adopt ball in the face of the conical surface sealing, magnitude of interference can float in a bigger scope and not influence its sealing effect, needn't seal being strict with of internal outside dimension and angle to conical surface as conical surface, avoided having a strong impact on sealing effect because magnitude of interference does not reach designing requirement, reduced processing cost simultaneously, improved the up-to-standard rate of product, it is too concentrated also to have solved special in the past button sealing surface place stress, scratch the problem of bonding easily, make the stress distribution at sealing surface place more reasonable, thereby reduced the probability of bonding damage to greatest extent, the most effective purpose of design that reaches.
Description of drawings
Fig. 1 is the structural representation of interior seal combination face among the utility model embodiment;
Fig. 2 is the structural representation of the utility model embodiment China and foreign countries seal combination face;
Fig. 3 is the utility model embodiment's sealing state figure;
Fig. 4 is the partial enlarged drawing at I place among Fig. 3.
Embodiment
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the oil casing threaded joint of high sealing, comprise the body 1 and the box cupling 2 that are threaded, described body 1 externally threaded end is provided with external sealed combinating face 4, the root of described box cupling 2 internal threads is provided with the interior seal combination face 3 that cooperates with described external sealed combinating face 4, described external sealed combinating face 4 comprises ball face 42, and the outer end of the described ball face 42 of described body 1 is provided with body location end face 44; Seal combination face 3 comprises the conical surface 32 that cooperates with described ball face 42 in described, and the bottom of described conical surface 32 is provided with box cupling location end face 34; In described body location end face 44 and end face 34 applying positions, described box cupling location, described ball face 42 and described conical surface 32 interference fit, the big end of described conical surface 32 is near described box cupling 2 female end, the tapering of described conical surface 32 is 10 °～35 °, and the radius of described ball face 42 is 3mm～20mm; Between described box cupling location end face 34 and the described conical surface 32 is interior arc transition face 33, between described body location end face 44 and the described ball face 42 is external arc transitional surface 43, arc transition face 33 radiuses are less than the radius of described external arc transitional surface 43 in described, arc transition face 33 radiuses are less than 0.5mm in described, and the radius of described external arc transitional surface 43 is greater than 0.5mm; Be provided with body cylinder transitional surface 41 between described ball face 42 and described body 1 outside thread, be provided with box cupling cylinder transitional surface 31 between described conical surface 32 and described box cupling 2 internal threads, the diameter of described body cylinder transitional surface 41 is less than the diameter of described box cupling cylinder transitional surface 31; Described body location end face 44 is for being arranged on the inverted cone surface of described body 1 end, the tapering of described inverted cone surface is 0 °～-20 °, described box cupling location end face 34 is for being arranged on the conical surface of described box cupling conical surface 32 outer ends, and described conical surface and described inverted cone surface are fitted.When body and box cupling screwing hermetic, body location end face 44 and box cupling location end face 34 fit conical surface 32 interference fit of the ball face 42 of external sealed combinating face 4 and interior seal combination face 3; Adopt ball in the face of the conical surface sealing like this, magnitude of interference can float in a bigger scope and not influence its sealing effect, when conical surface being sealed unlike conical surface, internal being strict with of outside dimension and angle avoided having a strong impact on because magnitude of interference does not reach designing requirement sealing effect; Reduced processing cost simultaneously, improved the up-to-standard rate of product, it is too concentrated also to have solved special in the past button sealing surface place stress, scratch the problem of bonding easily, make the stress distribution at sealing surface place more reasonable, thereby reduced the probability of bonding damage to greatest extent, effectively reached purpose of design.
Claims (8)
1. the oil casing threaded joint of high sealing, comprise the body and the box cupling that are threaded, the externally threaded end of described body is provided with the external sealed combinating face, the root of described box cupling internal thread is provided with the interior seal combination face that cooperates with described external sealed combinating face, it is characterized in that: described external sealed combinating face comprises the ball face, and the outer end of the described ball face of described body is provided with body location end face; The seal combination face comprises the conical surface that cooperates with described ball face in described, and the bottom of described conical surface is provided with box cupling location end face; In described body location end face and the end face applying of described box cupling location position, described ball face and described conical surface interference fit.
2. the oil casing threaded joint of high sealing as claimed in claim 1 is characterized in that: the big end of described conical surface is near described box cupling female end, and the tapering of described conical surface is 10 °～35 °.
3. the oil casing threaded joint of high sealing as claimed in claim 1 is characterized in that: the radius of described ball face is 3mm～20mm.
4. the oil casing threaded joint of high sealing as claimed in claim 1, it is characterized in that: be provided with body cylinder transitional surface between described ball face and the described body outside thread, be provided with box cupling cylinder transitional surface between described conical surface and the described box cupling internal thread, the diameter of described body cylinder transitional surface is less than the diameter of described box cupling cylinder transitional surface.
5. the oil casing threaded joint of high sealing as claimed in claim 1 is characterized in that: described body location end face is the inverted cone surface that is arranged on described body end, and the tapering of described inverted cone surface is 0 °～-20 °.
6. the oil casing threaded joint of high sealing as claimed in claim 1 is characterized in that: described box cupling location end face is the conical surface that is arranged on described box cupling conical surface outer end, and described conical surface and described inverted cone surface are fitted.
7. as the oil casing threaded joint of the described high sealing of the arbitrary claim of claim 1 to 6, it is characterized in that: be interior arc transition face between described box cupling location end face and the described conical surface, between described body location end face and the described ball face is the external arc transitional surface, and described interior arc transition radius surface is less than the radius of described external arc transitional surface.
8. the oil casing threaded joint of high sealing as claimed in claim 1 is characterized in that: the arc transition radius surface is less than 0.5mm in described, and the radius of described external arc transitional surface is greater than 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020013334XU CN201621394U (en) | 2010-01-04 | 2010-01-04 | High-sealing oil bushing threaded connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020013334XU CN201621394U (en) | 2010-01-04 | 2010-01-04 | High-sealing oil bushing threaded connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201621394U true CN201621394U (en) | 2010-11-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020013334XU Expired - Lifetime CN201621394U (en) | 2010-01-04 | 2010-01-04 | High-sealing oil bushing threaded connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201621394U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103628827A (en) * | 2012-08-20 | 2014-03-12 | 东港市东方高新金属材料有限公司 | Anti-bonding three-stage end surface metal sealing threaded connector for titanium alloy pipe |
| CN104141839A (en) * | 2014-07-28 | 2014-11-12 | 聊城安泰石油机械有限公司 | Petroleum and mine pipeline parallel direct connection buckle |
| CN104929533A (en) * | 2015-05-29 | 2015-09-23 | 聊城安泰石油机械有限公司 | Hermetic connector for ATPM-II oil tube and casing, tube block and coupling |
| CN108254230A (en) * | 2017-12-20 | 2018-07-06 | 中国人民解放军陆军装甲兵学院 | A kind of artificial debonding defect test specimen and its method for prefabricating |
| CN110273653A (en) * | 2019-07-17 | 2019-09-24 | 山东墨龙石油机械股份有限公司 | Bimetallic is anti-corrosion tubing and casing and its attachment device |
-
2010
- 2010-01-04 CN CN201020013334XU patent/CN201621394U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103628827A (en) * | 2012-08-20 | 2014-03-12 | 东港市东方高新金属材料有限公司 | Anti-bonding three-stage end surface metal sealing threaded connector for titanium alloy pipe |
| CN103628827B (en) * | 2012-08-20 | 2016-03-30 | 东港市东方高新金属材料有限公司 | Anti-stick button three grades of end plane metal sealing titanium compo pipe nipples |
| CN104141839A (en) * | 2014-07-28 | 2014-11-12 | 聊城安泰石油机械有限公司 | Petroleum and mine pipeline parallel direct connection buckle |
| CN104929533A (en) * | 2015-05-29 | 2015-09-23 | 聊城安泰石油机械有限公司 | Hermetic connector for ATPM-II oil tube and casing, tube block and coupling |
| CN108254230A (en) * | 2017-12-20 | 2018-07-06 | 中国人民解放军陆军装甲兵学院 | A kind of artificial debonding defect test specimen and its method for prefabricating |
| CN110273653A (en) * | 2019-07-17 | 2019-09-24 | 山东墨龙石油机械股份有限公司 | Bimetallic is anti-corrosion tubing and casing and its attachment device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Yangzhou Lontrin Steel Tube Co., Ltd. Assignor: Shandong Molong Petroleum Machinery Co., Ltd. Contract record no.: 2017370000030 Denomination of utility model: High-sealing oil bushing threaded connector Granted publication date: 20101103 License type: Common License Record date: 20170426 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101103 |
|
| CX01 | Expiry of patent term |