CN110043198B - Oil gas pipeline trompil nipple joint - Google Patents
Oil gas pipeline trompil nipple joint Download PDFInfo
- Publication number
- CN110043198B CN110043198B CN201810040344.3A CN201810040344A CN110043198B CN 110043198 B CN110043198 B CN 110043198B CN 201810040344 A CN201810040344 A CN 201810040344A CN 110043198 B CN110043198 B CN 110043198B
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- China
- Prior art keywords
- gas pipeline
- oil
- plate
- flange
- reinforcing plate
- 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.)
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- 210000002445 nipple Anatomy 0.000 title claims abstract description 13
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 41
- 238000003466 welding Methods 0.000 claims abstract description 35
- 238000010276 construction Methods 0.000 claims abstract description 3
- 230000004907 flux Effects 0.000 claims 1
- 238000010079 rubber tapping Methods 0.000 abstract description 18
- 239000012530 fluid Substances 0.000 abstract description 11
- 238000007789 sealing Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 68
- 230000002787 reinforcement Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/08—Casing joints
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
Abstract
The invention discloses an oil and gas pipeline tapping short section, and belongs to the technical field of oil and gas pipeline construction. This oil gas pipeline trompil nipple joint includes: connecting a flange and a reinforcing plate; the external flange includes: the flange plate and the long neck pipe are fixedly connected, and the first end of the long neck pipe is sleeved in the flange plate; the second end of the long neck pipe can be sleeved in the reinforcing plate; the annular face of stiffening plate can laminate on oil gas pipeline's outer wall. By adopting the perforated short section provided by the embodiment of the invention, the welding workload during welding is reduced by adopting the reinforcing plate, so that the integral operation is simple and easy; meanwhile, the welding amount is reduced, and the possibility of stress concentration of the oil-gas pipeline is reduced. Simultaneously because with stiffening plate, long neck pipe and oil gas pipeline three welding as an organic whole, no longer form annular space between stiffening plate and the oil gas pipeline. Therefore, after the hole is formed in the oil-gas pipeline, fluid in the oil-gas pipeline does not contact the reinforcing plate, sealing failure of the reinforcing plate is avoided, and use safety is guaranteed.
Description
Technical Field
The invention relates to the technical field of oilfield pipeline construction, in particular to an oil and gas pipeline tapping short section.
Background
With the development of national economy and the explosive development of the demand of energy sources such as petroleum, natural gas and the like, more and more branch pipelines with smaller diameters need to be led out from a main oil gas pipeline for new customer demand ends. When the branch pipes are connected, in order not to influence the conveying efficiency, continuous conveying and pressurized tapping operation becomes a preferred scheme. In order to ensure the smooth implementation of the tapping operation under pressure without stopping the transportation, the tapping short section needs to be welded on the oil and gas pipeline.
Among the prior art, a full packet mode trompil nipple joint is provided, include: the upper protection plate and the lower protection plate can be closed into a hollow cylinder shape, and the flange pipe is welded with the upper protection plate and is communicated with the inner side of the upper protection plate. During the use, will go up backplate and lower backplate welding on the oil gas pipeline for go up backplate and lower backplate and wrap up the oil gas pipeline completely, make and form inclosed annular space between upper and lower backplate and the oil gas pipeline. And then connecting a valve and the tapping equipment on the flange short section, so that the flange short section, the valve and the tapping equipment form a closed cavity. And (4) drilling the hole through a cutter of the hole drilling equipment deep into the flange nipple, and drilling the hole on the oil-gas pipeline to complete the operation.
In the process of implementing the invention, the inventor finds that the prior art has at least the following problems:
because the trompil nipple joint that provides among the prior art is the full package formula, need all weld upper shield and backplate down on the oil gas pipeline when using, in other words, all need weld along the circumference of oil gas pipeline. So cause the big defect of whole weldment work, and the welding volume is many, also easily causes the appearance stress concentration phenomenon of oil gas pipeline, and then influences oil gas pipeline's safety in utilization. And, since an annular space is formed between the upper and lower shields and the oil and gas pipeline, fluid in the oil and gas pipeline invades the annular space. The guard plate is easy to corrode when contacting with fluid for a long time, and further develops to the sealing failure of the guard plate, so that the leakage of oil and gas pipeline fluid is caused, and the production safety is influenced.
Disclosure of Invention
In order to solve the defects that the perforated short section in the prior art is large in welding workload and difficulty and easy to corrode a protection plate due to large volume and heavy mass, the embodiment of the invention provides the perforated short section of the oil-gas pipeline, and the technical scheme specifically comprises the following steps:
a hydrocarbon pipeline pup joint, comprising: the outer flange and the stiffening plate are in an annular structure; the external flange includes: the flange plate and the long neck pipe are fixedly connected, and the first end of the long neck pipe is sleeved in the flange plate; the second end of the long neck pipe can be sleeved in the reinforcing plate; the reinforcing plate has a surface that can be attached to the outer wall of the oil and gas pipeline.
Optionally, the stiffening plate is an arc-shaped plate.
Optionally, the second end of the elongated neck tube has an arc-shaped end surface with an arc matched with the arc of the stiffening plate.
Optionally, an exhaust hole is provided on the reinforcing plate.
Optionally, the exhaust hole is a threaded hole, and the tapping nipple further comprises a screw matched with the exhaust hole.
Optionally, the outer diameter of the stiffening plate is twice the inner diameter of the long neck tube.
Optionally, the inner diameter of the reinforcing plate is 10-15 mm larger than the outer diameter of the long-neck pipe.
Optionally, a connecting hole is arranged on the flange.
Optionally, the external flange is an integrally formed structure.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
according to the perforated short section provided by the embodiment of the invention, the reinforcing plate only covers part of the pipe wall of the oil and gas pipeline, so that the welding workload during welding is reduced, and the whole operation is simple and easy to implement. Meanwhile, the welding quantity on the oil-gas pipeline is reduced, the possibility of stress concentration of the oil-gas pipeline is further reduced, and the use safety of the pipeline is ensured. And, strengthened oil gas pipeline trompil position through this stiffening plate, avoided accomplishing the peripheral position of pipeline opening after the trompil to appear tearing damage pipeline, realize the reinforcement on the pipeline structure. Simultaneously, owing to weld stiffening plate, long neck pipe and oil gas pipeline three as an organic whole, no longer form annular space between stiffening plate and the oil gas pipeline. Therefore, after the hole is formed in the oil-gas pipeline, fluid in the oil-gas pipeline does not contact the reinforcing plate, the sealing failure of the reinforcing plate is avoided, and the use safety of the hole-forming short section is guaranteed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an oil and gas pipeline open-hole short section provided by an embodiment of the invention;
FIG. 2 is a schematic structural diagram of an external flange in a pup joint of an oil and gas pipeline opening provided by an embodiment of the invention;
FIG. 3 is a schematic structural diagram of a reinforcing plate in a pup joint of an oil and gas pipeline opening provided by an embodiment of the invention.
In the drawings, the respective reference numerals are:
1. connecting a flange externally;
11. a flange plate;
12. a long neck tube;
2. a reinforcing plate;
21. and (4) exhausting holes.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
In a first aspect, an embodiment of the present invention provides an oil and gas pipeline tapping nipple, as shown in fig. 1, the tapping nipple includes: the outer flange 1 and a stiffening plate 2 in an annular structure are connected; the external flange 1 includes: the flange plate 11 and the long neck pipe 12 are fixedly connected, and the first end of the long neck pipe is sleeved in the flange plate 11; the second end of the long neck pipe 12 can be sleeved in the reinforcing plate 2; the reinforcing plate 2 has a surface that can be fitted on the outer wall of an oil and gas pipeline.
The use principle of the oil and gas pipeline open pore short section provided by the embodiment of the invention is as follows:
when using, laminate the surface of stiffening plate 2 on the outer wall of oil gas pipeline, insert the second end of the long neck pipe 12 of external flange 1 in stiffening plate 2 again, later with long neck pipe 12, stiffening plate 2 and oil gas pipeline welding as an organic whole. After welding, a valve, a tapping device and the like are sequentially connected to the flange plate 11 of the external flange 1, and tapping is performed on the oil and gas pipeline by using the tapping device.
According to the perforated short section provided by the embodiment of the invention, the reinforcing plate 2 only covers part of the pipe wall of the oil and gas pipeline, so that the welding workload during welding is reduced, and the whole operation is simple and easy to implement. Meanwhile, the welding quantity on the oil-gas pipeline is reduced, the possibility of stress concentration of the oil-gas pipeline is further reduced, and the use safety of the pipeline is ensured. And, strengthened oil gas pipeline trompil position through this stiffening plate 2, avoided accomplishing the peripheral position of pipeline opening after the trompil to appear tearing damage pipeline, realize the reinforcement on the pipeline structure.
Further, it should be noted that: in the prior art, because the flange pipe and the oil and gas pipeline are not directly connected, the flange pipe and the oil and gas pipeline are connected only through the upper protection plate and the lower protection plate. Therefore, when the hole is opened, the fluid in the oil and gas pipeline enters the annular space formed by the upper protective plate, the lower protective plate and the oil and gas pipeline. Therefore, the fluid in the guard plate and the oil-gas pipeline annular space is easy to corrode the guard plate, so that the fluid is leaked, and the use safety of the oil-gas pipeline is influenced.
However, when the perforated short section provided by the embodiment of the invention is adopted, the reinforcing plate 2, the long neck pipe 12 and the oil and gas pipeline are welded into a whole, so that the fluid in the oil and gas pipeline after the perforation does not enter the gap between the reinforcing plate 2 and the oil and gas pipeline. Therefore, the corrosivity of fluid to the reinforcing plate 2 is effectively avoided, and the use safety of the whole pipeline is guaranteed.
Further, in order to make the annular surface of the reinforcing plate 2 better fit the oil and gas pipeline, the reinforcing plate 2 is an arc-shaped plate. Specifically as shown in fig. 2, stiffening plate 2 becomes saddle-shaped structure, and this stiffening plate 2 can more closely laminate on oil gas pipeline outer wall like this, is also convenient for weld stiffening plate 2 on the oil gas pipeline.
Further, in order to facilitate the welding of the stiffening plate 2, the long neck tube 12 and the oil gas pipeline, it is preferable that the second end of the long neck tube 12 has an arc-shaped end surface with the radian matched with that of the stiffening plate 2. Referring specifically to fig. 1, the second end of the long neck tube 21 and the reinforcing plate 2 are located on the same continuous curved surface. Because the three is not when welding, stiffening plate 2 is two solitary subassemblies with long neck pipe 12, does not have the relation of connection, therefore the second end of long neck pipe 12 has the radian and has also guaranteed the laminating of second section and oil gas pipeline outer wall equally, is convenient for weld.
In addition, it should be noted that, when the end of the long neck pipe 12 is an arc-shaped end face, in the embodiment of the present invention, the external flange 1 is an integrally formed structure. If this external flange 1 forms through the flange of current structure and the pipe fitting welding that has the arc terminal surface, is formed with first welding seam. So, when welding external flange 1 on oil gas pipeline, the distance between the welding seam of long neck pipe 1 and oil gas pipeline and first welding seam is shorter, can't guarantee external flange 1's structural stability this moment. Therefore, the circumscribing flange 1 should be a unitary body, particularly without the presence of welds on the long neck tube 12.
Moreover, when the reinforcing plate 2 is welded, under the action of high temperature, overheated gas may be generated between the reinforcing plate 2 and the oil gas pipeline, and the welding quality may be affected if the overheated gas is not released in time. In this way, the reinforcing plate 2 is provided with the exhaust holes 21. The exhaust hole 21 can effectively exhaust the superheated gas generated during welding.
Preferably, the vent hole 21 is a threaded hole, and the tapping nipple provided by the embodiment of the present invention further includes a screw adapted to the vent hole 21. When welding the reinforcing plate 2, the screw is detached, and after welding is completed, the screw can be screwed into the exhaust hole 21, so that foreign matters and impurities are prevented from entering the exhaust hole 21. And, if necessary, after finishing welding, can also weld the screw in the air vent 21, guarantee the stability of the whole stiffening plate 21.
Regarding the dimensions of the reinforcing plate 2 and the long neck tube 12, the outer diameter of the reinforcing plate 2 is twice the inner diameter of the long neck tube 12. Since the tapping device is operated by being inserted into the inner cavity of the long-neck tube 12 at the time of tapping, the maximum tapping diameter which can be achieved is equal to the inner diameter of the long-neck tube 12. Combining the "equal area" reinforcement theory, when the external diameter of stiffening plate 2 is twice of the internal diameter of long neck pipe 12, the reinforcement effect of stiffening plate 2 is the best, has also avoided stiffening plate 2 too big to cause the material waste simultaneously.
Meanwhile, the inner diameter of the reinforcing plate 2 is 20 to 30mm, for example, 22mm, 24mm, 26mm, 28mm, etc., larger than the outer diameter of the long neck tube 12. Thus, after the second end of the long neck pipe 2 in the external flange 1 is inserted into the reinforcing plate 2, a gap with the width of 10-15 mm is formed between the inner wall of the reinforcing plate 2 and the outer wall of the long neck pipe 2, and the gap is filled with solder when being used for welding so as to perform welding operation.
And, there are attachment holes on the flange 11, the attachment hole is used for installing the link, facilitate the device such as the branch pipe or valve, etc. The number of the connection holes is not particularly limited, and may be, for example, 3, 4, 5, 6, or the like. In addition, regarding the length of the long neck pipe 12, it should be noted that the minimum length of the long neck pipe 12 is 3 times of the diameter of the connecting hole, so that after the external flange 1 is welded with the oil and gas pipeline, the distance from the flange plate 11 to the outer wall of the oil and gas pipeline is greater than the length of the bolt matched with the connecting hole, and the bolt is convenient to install. Illustratively, when the diameter of the connecting hole is 11mm, the corresponding minimum length of the long neck pipe 12 is 33mm, and the bolt matched with the connecting hole with the diameter of 11mm is an M10 bolt, the length of the bolt is 30mm, and the minimum distance from the flange plate 11 to the outer wall of the oil and gas pipeline is 33mm, which is enough for installing an M10 bolt in the connecting hole.
According to the oil pipe tapping short section provided by the embodiment of the invention, the welding workload during welding is reduced by adopting the reinforcing plate 2, so that the whole operation is simple and easy to implement. Meanwhile, the welding quantity on the oil-gas pipeline is reduced, the possibility of stress concentration of the oil-gas pipeline is further reduced, and the use safety of the pipeline is ensured. And, strengthened oil gas pipeline trompil position through this stiffening plate 2, avoided accomplishing the peripheral position of pipeline opening after the trompil to appear tearing damage pipeline, realize the reinforcement on the pipeline structure. Meanwhile, the reinforcing plate 2, the long neck pipe 12 and the oil gas pipeline are welded into a whole, so that an annular space is not formed between the reinforcing plate 2 and the oil gas pipeline. And then behind the trompil on the oil gas pipeline, the fluid in the oil gas pipeline contactless stiffening plate, and then has avoided causing the stiffening plate to seal the inefficacy, has guaranteed the safety in utilization of this trompil nipple joint.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. The utility model provides an oil and gas pipeline trompil nipple which characterized in that, the trompil nipple includes: the outer flange (1) and a stiffening plate (2) in an annular structure are connected;
the external flange (1) comprises: the flange plate (11) and the long neck pipe (12) are sleeved with the first end in the flange plate (11) and fixedly connected with the first end;
the second end of the long-neck tube (12) can be sleeved in the reinforcing plate (2), the second end of the long-neck tube (12) and the reinforcing plate (2) are located on the same continuous curved surface, a gap with the width of 10-15 mm is formed between the outer wall of the long-neck tube (12) and the inner wall of the reinforcing plate (2), the gap is used for filling welding flux during welding, and the outer diameter of the reinforcing plate (2) is twice the inner diameter of the long-neck tube (12);
a connecting hole is formed in the flange plate (11), and the minimum length of the long neck pipe (12) is 3 times of the diameter of the connecting hole;
reinforcing plate (2) have the surface that can laminate on the outer wall of oil gas pipeline, reinforcing plate (2) long neck pipe (12) with oil gas pipeline is in seam department welding is as an organic whole.
2. The gap sub of claim 1, characterized in that the stiffening plate (2) is an arc plate.
3. The gap sub of claim 2, characterized in that the second end of the long neck (12) has an arc end face with an arc matching the arc of the stiffening plate (2).
4. The gap sub according to claim 1, characterized in that a vent hole (21) is provided on the stiffening plate (2).
5. The gap sub of claim 4, characterized in that the vent hole (21) is a threaded hole, and the gap sub further comprises a screw adapted to the vent hole (21).
6. The gap sub according to any of claims 1-5, characterized in that the circumscribed flange (1) is of an integrally formed construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810040344.3A CN110043198B (en) | 2018-01-16 | 2018-01-16 | Oil gas pipeline trompil nipple joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810040344.3A CN110043198B (en) | 2018-01-16 | 2018-01-16 | Oil gas pipeline trompil nipple joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110043198A CN110043198A (en) | 2019-07-23 |
| CN110043198B true CN110043198B (en) | 2021-09-28 |
Family
ID=67272941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810040344.3A Active CN110043198B (en) | 2018-01-16 | 2018-01-16 | Oil gas pipeline trompil nipple joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110043198B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1872357A (en) * | 1930-08-11 | 1932-08-16 | Smith Corp A O | Forged manway construction for pressure vessels |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3561484D1 (en) * | 1984-08-08 | 1988-02-25 | Fischer Ag Georg | Shaped piercing piece consisting of weldable plastics |
| CN104100789B (en) * | 2013-04-03 | 2017-06-06 | 中国石油天然气集团公司 | In-service oil-gas pipeline on-line production Wai Yin collateral branch four-way |
| CN203258292U (en) * | 2013-04-25 | 2013-10-30 | 中国石油化工股份有限公司 | Pipeline hot tapping support device |
| CN203979704U (en) * | 2014-05-27 | 2014-12-03 | 苏州市诚键法兰制造有限公司 | A kind of welding neck flange |
| CN204054199U (en) * | 2014-06-25 | 2014-12-31 | 天津耀德环保科技有限公司 | Hole drilling device for pipeline with pressure |
| CN105386737B (en) * | 2015-12-03 | 2018-07-17 | 河北博路天宝石油设备制造有限公司 | A kind of punching device under pressure |
| CN106051353A (en) * | 2016-07-17 | 2016-10-26 | 杨越 | Integrally-perforated saddle-shaped clamp pipeline connector fitting for unmanned ship |
-
2018
- 2018-01-16 CN CN201810040344.3A patent/CN110043198B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1872357A (en) * | 1930-08-11 | 1932-08-16 | Smith Corp A O | Forged manway construction for pressure vessels |
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| Publication number | Publication date |
|---|---|
| CN110043198A (en) | 2019-07-23 |
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