CN203939444U - A kind of EU turns the tubing coupling of EU reducing - Google Patents
A kind of EU turns the tubing coupling of EU reducing Download PDFInfo
- Publication number
- CN203939444U CN203939444U CN201420279303.7U CN201420279303U CN203939444U CN 203939444 U CN203939444 U CN 203939444U CN 201420279303 U CN201420279303 U CN 201420279303U CN 203939444 U CN203939444 U CN 203939444U
- Authority
- CN
- China
- Prior art keywords
- internal thread
- conical surface
- reducing
- transition conical
- shaped
- 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
Links
- 230000001808 coupling Effects 0.000 title claims abstract description 9
- 238000010168 coupling process Methods 0.000 title claims abstract description 9
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 9
- 238000005516 engineering process Methods 0.000 description 2
- 241001463139 Vitta Species 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
The utility model relates to a kind of EU and turns the tubing coupling of EU reducing, adapter body is cylindrical tube, it is per inch 8 teeth that this inner side, body one end is coaxially shaped with 3-1/2 " EU thickeies internal thread; this 3-1/2 " EU thickening internal thread, it is per inch 8 teeth that body other end inner side is coaxially shaped with 2-7/8 " EU thickeies internal thread, this 2-7/8 " EU thickening internal thread; Body middle part outer wall between this both sides screw thread is coaxially shaped with the outside transition conical surface, the taper angle b of this outside transition conical surface is 20 °, body middle part inwall between external screw thread and internal thread is shaped with the inner transition conical surface, and the taper angle a of the inner transition conical surface is 30 °.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 transition of screw thread reducing, has further been suitable for oil pipe and has connected the requirement that reducing uses.
Description
Technical field
The utility model belongs to oil pipe field, and especially a kind of EU turns the tubing coupling of EU reducing.
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 needs different model oil pipe to connect, sometimes often need multiple 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 EU simple in structure, that precision is high, bonding strength is high, safe and reliable to turn the tubing coupling of EU reducing.
The utility model solves its technical problem and takes following technical scheme to realize:
A kind of EU turns the tubing coupling of EU reducing, adapter body is cylindrical tube, it is characterized in that: it is per inch 8 teeth that inner side, described body one end is coaxially shaped with 3-1/2 " EU thickeies internal thread; this 3-1/2 " EU thickening internal thread, it is per inch 8 teeth that body other end inner side is coaxially shaped with 2-7/8 " EU thickeies internal thread, this 2-7/8 " EU thickening internal thread; Body middle part outer wall between this both sides screw thread is coaxially shaped with the outside transition conical surface, the taper angle b of this outside transition conical surface is 20 °, body middle part inwall between external screw thread and internal thread is shaped with the inner transition conical surface, and the taper angle a of the inner transition conical surface is 30 °.
And, between the internal thread outer end of described both sides and body outer end, leave transition spool piece.
Advantage of the present utility model and good effect are:
1, this joint is directly thickeied internal thread by 3-1/2 " EU thickening internal thread reducing is to 2-7/8 " EU by internal thread specification, effectively reduce by the cost of oil pipe reducing, and the thread parameter of this joint carries out API5B standard, keep versatility and the interchangeability of product.
2, 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.
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 transition of screw thread reducing, has further been suitable for oil pipe and has connected the requirement that reducing uses.
Brief description of the drawings
Fig. 1 is structural front view of the present utility model.
Detailed description of the invention
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 EU turns the tubing coupling of EU reducing, adapter body is cylindrical tube 1, it is per inch 8 teeth that this inner side, body one end is coaxially shaped with 3-1/2 " EU thickeies internal thread 2; this 3-1/2 " EU thickening internal thread, it is per inch 8 teeth that body other end inner side is coaxially shaped with 2-7/8 " EU thickeies internal thread 4, this 2-7/8 " EU thickening internal thread;
Being shaped with 3-1/2 " external diameter of EU thickening internal thread one end body is greater than the body external diameter of the other end; the body middle part outer wall between this both sides screw thread is coaxially shaped with the outside transition conical surface 3; the taper angle b of this outside transition conical surface is 20 °, and this outside transition conical surface has been avoided because of the impact of reduced outer diameter on product bonding strength;
Body middle part inwall between external screw thread and internal thread is shaped with the inner transition conical surface, and the taper angle a of the inner transition conical surface is 30 °, and the inner transition conical surface has ensured each specification reach, has avoided again reducing because of internal diameter the flow damping phenomena causing.
Between the internal thread outer end of described both sides and body outer end, leave transition spool piece 5, when installation, this excessive sleeve pipe coaxial package makes to connect more firm outward at the oil pipe being connected.
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: not departing from the spirit and scope of the utility model and claims, various replacements, variation and amendment 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. an EU turns the tubing coupling of EU reducing, adapter body is cylindrical tube, it is characterized in that: it is per inch 8 teeth that inner side, described body one end is coaxially shaped with 3-1/2 " EU thickeies internal thread; this 3-1/2 " EU thickening internal thread, it is per inch 8 teeth that body other end inner side is coaxially shaped with 2-7/8 " EU thickeies internal thread, this 2-7/8 " EU thickening internal thread; Body middle part outer wall between this both sides screw thread is coaxially shaped with the outside transition conical surface, the taper angle b of this outside transition conical surface is 20 °, body middle part inwall between external screw thread and internal thread is shaped with the inner transition conical surface, and the taper angle a of the inner transition conical surface is 30 °.
2. EU according to claim 1 turns the tubing coupling of EU reducing, it is characterized in that: between the internal thread outer end of described both sides and body outer end, leave transition spool piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420279303.7U CN203939444U (en) | 2014-05-28 | 2014-05-28 | A kind of EU turns the tubing coupling of EU reducing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420279303.7U CN203939444U (en) | 2014-05-28 | 2014-05-28 | A kind of EU turns the tubing coupling of EU reducing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203939444U true CN203939444U (en) | 2014-11-12 |
Family
ID=51858767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420279303.7U Expired - Fee Related CN203939444U (en) | 2014-05-28 | 2014-05-28 | A kind of EU turns the tubing coupling of EU reducing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203939444U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852352A (en) * | 2020-06-23 | 2020-10-30 | 肖云东 | Reducing oil pipe coupling |
-
2014
- 2014-05-28 CN CN201420279303.7U patent/CN203939444U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852352A (en) * | 2020-06-23 | 2020-10-30 | 肖云东 | Reducing oil pipe coupling |
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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: 20141112 Termination date: 20150528 |
|
| EXPY | Termination of patent right or utility model |