CN203948041U - A kind of NUP turns the inside and outside variable buckle joint of EUB oil pipe - Google Patents
A kind of NUP turns the inside and outside variable buckle joint of EUB oil pipe Download PDFInfo
- Publication number
- CN203948041U CN203948041U CN201420279392.5U CN201420279392U CN203948041U CN 203948041 U CN203948041 U CN 203948041U CN 201420279392 U CN201420279392 U CN 201420279392U CN 203948041 U CN203948041 U CN 203948041U
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- shaped
- thread
- oil pipe
- screw thread
- external screw
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Abstract
The utility model relates to a kind of NUP and turns the inside and outside variable buckle joint of EUB oil pipe, adapter body is cylindrical tube, it is characterized in that: the axial side inside of described body is coaxially shaped with 3-1/2 " EU thickening box internal thread; this 3-1/2 " EU thickening box internal thread per inch 8 buttons, the axial opposite side outer, coaxial of body is shaped with 3-1/2, and " NU does not thicken pin thread external screw thread, this 3-1/2 " NU does not thicken pin thread external screw thread per inch 10 buttons; Making female body outer end diameter is greater than and is shaped with externally threaded body outer end diameter, the body of thread head is coaxially shaped with an annular seal groove outward outside, the coaxial sealing ring of installing in this annular seal groove, the body stage casing inwall between external screw thread and internal thread is shaped with the inner transition conical surface.The utility model has carried out deformation design on the basis of the isometrical box cupling product of API5CT standard normal, has directly realized the inside and outside reducing transition of screw thread, has further been suitable for oil pipe and has connected the requirement that reducing is used.
Description
Technical field
The utility model belongs to oil pipe connector, and especially a kind of NUP turns the inside and outside variable buckle joint of EUB oil pipe.
Background technology
At present, conventional oil pipe is all generally the oil pipe that adopts " API " technical standard to produce both at home and abroad, in reality exploitation is produced, actual production technique becomes increasingly complex for the requirement of vitta structure, and the oil pipe of different-diameter need to be installed at different job positions, therefore different model oil pipe need to be connected, sometimes often need a plurality of adapters just can reach connection technological requirement, to reach the requirement of production technology, connect comparatively complexity, and connection precision is difficult to ensure card.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art part, provides a kind of NUP simple in structure, that precision is high, bonding strength is high, safe and reliable to turn the inside and outside variable buckle joint of EUB oil pipe.
The utility model solves its technical problem and takes following technical scheme to realize:
A kind of NUP turns the inside and outside variable buckle joint of EUB oil pipe, adapter body is cylindrical tube, it is characterized in that: the axial side inside of described body is coaxially shaped with 3-1/2 " EU thickening box internal thread; this 3-1/2 " EU thickening box internal thread per inch 8 buttons, the axial opposite side outer, coaxial of body is shaped with 3-1/2, and " NU does not thicken pin thread external screw thread, this 3-1/2 " NU does not thicken pin thread external screw thread per inch 10 buttons; Making female body outer end diameter is greater than and is shaped with externally threaded body outer end diameter, the body of thread head is coaxially shaped with an annular seal groove outward outside, the coaxial sealing ring of installing in this annular seal groove, the body stage casing inwall between external screw thread and internal thread is shaped with the inner transition conical surface.
And the taper angle of the described inner transition conical surface is 30 °.
Advantage of the present utility model and good effect are:
1, two of this joint kinds of helicitic texture combined outside positions adopt conical surface transition, have avoided because of the impact of reduced outer diameter on product bonding strength.
2, two of this joint kinds of threaded interior binding sites adopt conical surface transition, have guaranteed each specification reach, have avoided again the flow damping phenomena causing because of internal diameter reduction.
3, the utility model has carried out deformation design on the basis of the isometrical box cupling product of API5CT standard normal, has directly realized the inside and outside reducing transition of screw thread, has further been suitable for oil pipe and has connected the requirement that reducing is used.
Accompanying drawing explanation
Fig. 1 is structural front view of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing and by specific embodiment, the utility model is described in further detail, and following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.
A kind of NUP turns the inside and outside variable buckle joint of EUB oil pipe, adapter body is cylindrical tube 2, the axial side inside of this body is coaxially shaped with 3-1/2 " EU thickening box internal thread 6; this 3-1/2 ", and EU thickening box internal thread per inch 8 is detained, the axial opposite side outer, coaxial of body is shaped with 3-1/2, and " NU does not thicken pin thread external screw thread 4; this 3-1/2 " NU does not thicken pin thread external screw thread per inch 10 buttons, and thickening external screw thread can promote its bonding strength;
Making female body end 1 external diameter is greater than and is shaped with externally threaded body outer end diameter, the body of thread head is coaxially shaped with an annular seal groove 3 outward outside, the coaxial sealing ring of installing in this annular seal groove, effectively strengthens the sealing intensity of junction and avoids link impact to damage connector;
Body middle-end inwall between external screw thread and internal thread is shaped with the inner transition conical surface 5, and the taper angle b of this inner transition conical surface is 30 °, and the inner transition conical surface has guaranteed each specification reach, has avoided again the flow damping phenomena causing because of internal diameter reduction; Body inside between the inner transition conical surface and internal thread is coaxially shaped with the annular escape that width is 3.175mm, further improves the assembling fitness of joint and oil pipe, and leaves withdrawing size for processing.
The present embodiment is not thickeied pin thread external screw thread by internal thread specification by 3-1/2 " the direct reducing of EU thickening box internal thread is to 3-1/2 " NU, effectively reduces by the cost of oil pipe reducing.Thread parameter described in the present embodiment is carried out API5B standard, keeps versatility and the interchangeability of product.
EU represents the oil pipe button-type of external upset (EU), and NU represents not have the oil pipe button-type of external upset (EU), and P represents pin thread, and B represents female mouthful; 3-1/2 " and 2-7/8 " all belongs to the thread parameter of API5B standard.
Although disclose for the purpose of illustration embodiment of the present utility model and accompanying drawing, but it will be appreciated by those skilled in the art that: within not departing from the spirit and scope of the utility model and claims, various replacements, variation and modification are all possible, therefore, scope of the present utility model is not limited to embodiment and the disclosed content of accompanying drawing.
Claims (2)
1. a NUP turns the inside and outside variable buckle joint of EUB oil pipe, adapter body is cylindrical tube, it is characterized in that: the axial side inside of described body is coaxially shaped with 3-1/2 " EU thickening box internal thread; this 3-1/2 " EU thickening box internal thread per inch 8 buttons, the axial opposite side outer, coaxial of body is shaped with 3-1/2, and " NU does not thicken pin thread external screw thread, this 3-1/2 " NU does not thicken pin thread external screw thread per inch 10 buttons; Making female body outer end diameter is greater than and is shaped with externally threaded body outer end diameter, the body of thread head is coaxially shaped with an annular seal groove outward outside, the coaxial sealing ring of installing in this annular seal groove, the body stage casing inwall between external screw thread and internal thread is shaped with the inner transition conical surface.
2. NUP according to claim 1 turns the inside and outside variable buckle joint of EUB oil pipe, it is characterized in that: the taper angle of the described inner transition conical surface is 30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420279392.5U CN203948041U (en) | 2014-05-28 | 2014-05-28 | A kind of NUP turns the inside and outside variable buckle joint of EUB oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420279392.5U CN203948041U (en) | 2014-05-28 | 2014-05-28 | A kind of NUP turns the inside and outside variable buckle joint of EUB oil pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203948041U true CN203948041U (en) | 2014-11-19 |
Family
ID=51890084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420279392.5U Expired - Fee Related CN203948041U (en) | 2014-05-28 | 2014-05-28 | A kind of NUP turns the inside and outside variable buckle joint of EUB oil pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203948041U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639905A (en) * | 2017-01-24 | 2017-05-10 | 中国石油天然气集团公司 | Abnormal-diameter continuous oil pipe butt joint device and mounting method of butt joint device as well as abnormal-diameter oil pipe mounting method |
-
2014
- 2014-05-28 CN CN201420279392.5U patent/CN203948041U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639905A (en) * | 2017-01-24 | 2017-05-10 | 中国石油天然气集团公司 | Abnormal-diameter continuous oil pipe butt joint device and mounting method of butt joint device as well as abnormal-diameter oil pipe mounting method |
| CN106639905B (en) * | 2017-01-24 | 2018-10-12 | 中国石油天然气集团公司 | Reducing coiled tubing docking facilities and its installation method and reducing oil pipe installation method |
| US11149496B2 (en) | 2017-01-24 | 2021-10-19 | China National Petroleum Corporation | Coupling apparatus for coiled tubings of different diameters, installing method for coupling apparatus, and installing method for tubings of different diameters using coupling apparatus |
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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: 20141119 Termination date: 20150528 |
|
| EXPY | Termination of patent right or utility model |