CN212960278U - Connecting pipe for deepwater submarine pipeline - Google Patents
Connecting pipe for deepwater submarine pipeline Download PDFInfo
- Publication number
- CN212960278U CN212960278U CN202020951113.0U CN202020951113U CN212960278U CN 212960278 U CN212960278 U CN 212960278U CN 202020951113 U CN202020951113 U CN 202020951113U CN 212960278 U CN212960278 U CN 212960278U
- Authority
- CN
- China
- Prior art keywords
- submarine pipeline
- pipeline
- pipe
- section
- connecting pipe
- 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.)
- Active
Links
Images
Abstract
The utility model discloses a connecting pipe for deep water submarine pipeline for UNICOM's individual layer submarine pipeline and submarine pipeline terminal structure thing, the connecting pipe is integrated into one piece, the connecting pipe is including connecting gradually and the same first end of internal diameter, first pipeline section, second pipeline section and second end, first pipeline section with second pipeline section junction still is equipped with hangs the platform, hang the platform for following the perpendicular to the annular boss that the outside extension of connecting pipe wall direction, first pipeline section is including connecting round platform venturi tube and cylindrical pipe as an organic whole, at the in-process of kilometer level submarine pipeline and submarine pipeline terminal structure thing welding and installation, and first pipeline section can be better alleviated the welding and accomplish the whole stress concentration problem that drops in-process because submarine pipeline terminal rigidity is great arouses after the welding, and the second pipeline section is round platform shape structure, can better alleviate in deep water submarine pipeline and submarine pipeline terminal welding process because deep sea bottom pipe is acted on by deep sea wave current The fatigue problem caused by the road.
Description
Technical Field
The utility model belongs to the technical field of the ocean engineering and specifically relates to a connecting pipe for connecting deep water submarine pipeline and submarine pipeline terminal structure thing.
Background
For the development of deepwater offshore oil fields with water depth more than one kilometer, an installation and connection device is needed to be designed for offshore construction of a submarine pipeline and a submarine pipeline terminal structure, and the purpose is to temporarily fix the end part of the submarine pipeline on a construction ship, weld the end part of the submarine pipeline and the submarine pipeline terminal structure into a whole and then put the submarine pipeline to the seabed.
Under the action of changing load, the material can generate micro and macro plastic deformation, the bearing capacity of the material is reduced, cracks are caused, the materials are gradually expanded, finally, the materials are broken, and fatigue generally starts from the surface and a stress concentration position. On one hand, in the shipboard welding process of the submarine pipeline terminal structure and the submarine pipeline, the submarine pipeline below the suspension structure can be seriously damaged by fatigue under the action of wave current, so that the submarine pipeline fails; on the other hand, after the submarine pipeline terminal structure and the submarine pipeline are welded on the side, the pipeline above the suspension structure can be seriously stress-concentrated due to the fact that the terminal structure is too heavy, and construction difficulty and submarine pipeline failure risk are greatly increased.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a connecting device can be applicable to deep water submarine pipeline marine installation, reduces the influence of wave current to submarine pipeline.
In order to solve the technical problem, the utility model provides a connecting pipe for deep water submarine pipeline for UNICOM's individual layer submarine pipeline and submarine pipeline terminal structure thing, the connecting pipe is integrated into one piece, the connecting pipe is including connecting gradually and the same first end of internal diameter, first pipeline section, second pipeline section and second end, first pipeline section with still be connected with a suspension platform between the second pipeline section, suspension platform is from the perpendicular to the annular boss that the connecting pipe wall direction outwards stretches out. When the submarine pipeline is welded on the water surface, the suspension platform is clamped with the construction ship on the side, and the submarine pipeline with the end part connected with the connecting pipe is temporarily fixed on the side of the construction ship.
Furthermore, the first end and the second end are cylindrical, the first pipe section comprises a cylindrical pipe and a circular truncated cone-shaped pipe which are connected into a whole, and the second pipe section is circular truncated cone-shaped.
Furthermore, the cross-sectional area of the second pipe section close to the suspension platform is larger than that of the second pipe section close to the second end head, and the circular truncated cone-shaped structure can enhance the fatigue resistance of the structure and is used for solving the problem of fatigue caused by waves due to overlarge water depth in the single-layer submarine pipeline broadside installation process.
Furthermore, the circular truncated cone-shaped pipe is located between the first end and the cylindrical pipe, the diameter of the first end is smaller than that of the cylindrical pipe, the structure of the circular truncated cone-shaped pipe can enhance the overall anti-yielding capacity of the pipeline, and the circular truncated cone-shaped pipe is used for relieving the stress concentration problem caused by the weight of the structure after the submarine pipeline terminal structure and the submarine pipeline are welded.
Further, the second tube section has a length greater than the length of the first tube section.
Further, the first end head and the second end head are connected with the submarine pipeline or a submarine pipeline terminal structure respectively through welding.
Further, the first end head and the second end head are cylindrical, and the bevel face is an inclined face.
The technical effects of the utility model reside in that: 1. the connecting pipe for the submarine pipeline of the utility model comprises a first end head, a first pipe section, a second pipe section and a second end head which are connected in sequence and have the same inner diameter, the joint of the first pipe section and the second pipe section is also provided with a suspension platform which is an annular boss extending outwards from the direction vertical to the pipe wall of the connecting pipe, so that the submarine pipeline can be conveniently and temporarily fixed on the board side of a ship, the first pipe section comprises a circular truncated cone-shaped pipe and a cylindrical pipe which are connected into a whole, in the process of welding and installing the kilometer-scale submarine pipeline and the submarine pipeline terminal structure, the stress concentration problem caused by the large rigidity of the submarine pipeline terminal in the integral lowering process after the completion of welding the submarine pipeline terminal structure and the submarine pipeline can be better relieved, meanwhile, the second pipe section is of a circular truncated cone-shaped structure, so that the fatigue problem caused by the deep sea wave current acting on the submarine pipeline in the process of welding the submarine pipeline and the submarine pipeline terminal can be better relieved.
2. The utility model discloses a connecting pipe for submarine pipeline, UNICOM's individual layer submarine pipeline and submarine pipeline terminal structure thing, with submarine pipeline welding back hang the setting of platform during the installation can make things convenient for submarine pipeline to fix temporarily at construction boats and ships topside, as submarine pipeline's partly during the submarine pipeline operation, do not influence the interior fluidic normal transport of submarine pipeline.
Drawings
Fig. 1 is a schematic structural view of a connection pipe for a submarine pipeline according to the present invention;
fig. 2 is a schematic sectional view of the connecting pipe for a submarine pipeline according to the present invention.
The main reference numbers in the figures illustrate:
1-a suspension platform, 2-a first pipe section, 3-a second pipe section, 4-a connecting pipe, 21-a truncated cone-shaped pipe, 22-a cylindrical pipe, 41-a first end and 42-a second end.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
Fig. 1 is a schematic structural view of a connecting pipe for a submarine pipeline according to the present invention, and fig. 2 is a schematic sectional structural view of a connecting pipe for a submarine pipeline according to the present invention. As shown in fig. 1 and 2, a connecting pipe 4 for a deepwater subsea pipeline is used for communicating a single-layer subsea pipeline with a subsea pipeline terminal structure, the connecting pipe 4 comprises a first end 41, a first pipe section 2, a second pipe section 3 and a second end 42 which are sequentially connected and have the same inner diameter, the first end 41 and the second end 42 are cylindrical, a suspension platform 1 is further connected between the first pipe section 2 and the second pipe section 3, and the suspension platform 1 is an annular boss extending outwards from a direction perpendicular to the pipe wall of the connecting pipe 4. When the submarine pipeline is welded on the water surface, the suspension platform 1 is clamped with the construction ship on the side, and the submarine pipeline with the end connected with the connecting pipe 4 is temporarily fixed on the side of the construction ship.
Referring to fig. 2, the cross-sectional area of the second pipe section 3 close to the suspended platform 1 is larger than that close to the second end 42, and the truncated cone-shaped structure can enhance the fatigue resistance of the structure, so as to solve the problem of fatigue caused by the overlarge water depth in the shipboard installation process of the single-layer submarine pipeline.
As shown in fig. 1 and 2, the first pipe section 2 comprises a circular truncated cone-shaped pipe 21 and a cylindrical pipe 22 which are connected into a whole, the cylindrical pipe 22 is close to the suspension platform 1, the circular truncated cone-shaped pipe 21 is located between the first end 41 and the cylindrical pipe 22, and the structure of the circular truncated cone-shaped pipe 21 can provide the anti-yielding capability of the whole pipeline for reinforcing the overall anti-yielding capability of the pipeline, so as to relieve the stress concentration problem caused by the weight of the structure after the end structure of the submarine pipeline is welded with the submarine pipeline.
In a preferred embodiment of the present invention, the diameter of the first end 41 is smaller than the diameter of the cylindrical tube; the length of the first pipe section 3 is greater than that of the first pipe section 2; the first end 41 is connected by welding to the subsea pipeline and the second end 42 is connected by welding to the subsea pipeline termination structure.
In this embodiment, the welding bevel surfaces of the first end 41 and the second end 42 are inclined surfaces.
Referring to fig. 1 and 2, in the practical use of the present invention, the first end 41 of the connecting pipe 4 is welded to the end of the single-layer submarine pipeline on land and is laid on the seabed along with the submarine pipeline. When the submarine pipeline is connected with the submarine pipeline terminal structure, the submarine pipeline and the connecting pipe 4 are lifted from the seabed to a construction ship, the suspension platform 1 is combined with a shipboard clamp of the construction ship, so that the submarine pipeline can be temporarily fixed on the shipboard of the construction ship, finally, the second end 42 of the connecting pipe 4 is welded with the submarine pipeline terminal structure on the construction ship, and the submarine pipeline, the connecting pipe 4 and the submarine pipeline terminal structure are integrally lowered to the seabed after connection is completed. The first pipe section 2 comprises a circular truncated cone-shaped pipe 21 and a cylindrical pipe 22 which are integrally connected, in the welding and installation process of a kilometer-scale submarine pipeline and a submarine pipeline terminal structure, the structure of the first pipe section 2 can better relieve the stress concentration problem caused by the large rigidity of a submarine pipeline terminal in the integral lowering process after the submarine pipeline terminal structure and the submarine pipeline are welded, and meanwhile, the second pipe section 3 is of a circular truncated cone-shaped tubular structure, so that the submarine pipeline fatigue problem caused by the deep sea wave flow acting on the submarine pipeline in the connection process of the submarine pipeline and the submarine pipeline terminal can be better relieved.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.
Claims (8)
1. A connecting pipe for a deepwater submarine pipeline, which is used for communicating a single-layer submarine pipeline with a submarine pipeline terminal structure, and is characterized in that: the connecting pipe is integrated into one piece, the connecting pipe is including connecting gradually and the same first end of internal diameter, first pipeline section, second pipeline section and second end, first pipeline section with still be connected with a platform that hangs between the second pipeline section, hang the platform for following the perpendicular to the annular boss that the outside stretches out of connecting pipe wall direction.
2. The connecting tube of claim 1, wherein: the first end and the second end are cylindrical, the first pipe section comprises a cylindrical pipe and a circular truncated cone-shaped pipe which are connected into a whole, and the second pipe section is circular truncated cone-shaped.
3. The connecting tube of claim 2, wherein: the cross-sectional area of the second pipe section close to the suspension platform is larger than the cross-sectional area of the second pipe section close to the second end head.
4. The connecting tube of claim 2, wherein: the circular truncated cone-shaped pipe is located between the first end and the cylindrical pipe.
5. The connecting tube of claim 2, wherein: the diameter of the first end is smaller than the diameter of the cylindrical tube.
6. The connecting tube of claim 1, wherein: the second tube section has a length greater than the length of the first tube section.
7. The connecting tube of claim 1, wherein: the first end and the second end are respectively connected with a submarine pipeline or a submarine pipeline terminal structure through welding.
8. The connecting tube of claim 7, wherein: the bevel surfaces of the first end head and the second end head are inclined planes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020951113.0U CN212960278U (en) | 2020-05-29 | 2020-05-29 | Connecting pipe for deepwater submarine pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020951113.0U CN212960278U (en) | 2020-05-29 | 2020-05-29 | Connecting pipe for deepwater submarine pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212960278U true CN212960278U (en) | 2021-04-13 |
Family
ID=75376528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020951113.0U Active CN212960278U (en) | 2020-05-29 | 2020-05-29 | Connecting pipe for deepwater submarine pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212960278U (en) |
-
2020
- 2020-05-29 CN CN202020951113.0U patent/CN212960278U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5269629A (en) | Elastomeric swivel support assembly for catenary riser | |
| US8562256B2 (en) | Floating system connected to an underwater line structure and methods of use | |
| CN106516021A (en) | Self-propelled carrying and installing all-in-one ship for underwater tunnel immersed tubes | |
| CN101881148B (en) | Jacket riser mounting method and special riser component thereof | |
| CN109736343A (en) | Offshore wind power foundation, its installation method and wind power generating set | |
| CN100510282C (en) | Sea-water spanning underslung flow type tunnel bridge | |
| CN201615337U (en) | Submarine pipeline oil catcher | |
| US8453588B2 (en) | Float structure for storing liquids | |
| CN212960278U (en) | Connecting pipe for deepwater submarine pipeline | |
| AU2009272589B2 (en) | Underwater hydrocarbon transport apparatus | |
| CN217232026U (en) | Bank blowing rubber pipe of self-propelled trailing suction dredger | |
| CN102661444B (en) | Installation method of deepwater double piping system of offshore platform | |
| CN203383796U (en) | Ultra-deep water-oil-gas development system based on dry-type Christmas tree | |
| CN105971532B (en) | Casing expander, strand probing positioning system and strand probing localization method | |
| CN210882532U (en) | Float structure capable of adjusting direction | |
| CN210066693U (en) | Offshore geological exploration platform structure with assembled barrel-shaped foundation | |
| CN210151774U (en) | Tool for hoisting vertical pile of steel pipe pile of offshore wind power single-pile foundation | |
| CN210235267U (en) | Offshore wind turbine composite cylinder foundation towing structure | |
| CN110155263B (en) | Cylindrical semi-submersible drilling platform | |
| CN213535043U (en) | Novel shallow water simple pipe laying ship | |
| CN210067994U (en) | Offshore pipeline floating body | |
| CN212960177U (en) | Suspension device for submarine pipeline broadside installation | |
| KR100537772B1 (en) | Subsea Pipeline Installation Technique with Steel Buoy | |
| JPS5917957Y2 (en) | floating type oil fence | |
| CN213867912U (en) | Plugging device for floating transportation of large-diameter steel piles on sea |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |