CN216201239U - Pipe joint for deepwater sea pipe - Google Patents
Pipe joint for deepwater sea pipe Download PDFInfo
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- CN216201239U CN216201239U CN202122634208.7U CN202122634208U CN216201239U CN 216201239 U CN216201239 U CN 216201239U CN 202122634208 U CN202122634208 U CN 202122634208U CN 216201239 U CN216201239 U CN 216201239U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 230000007704 transition Effects 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 4
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 238000005242 forging Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013587 production medium Substances 0.000 description 1
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Abstract
The utility model relates to the technical field of deepwater seabed sea pipe joints, and provides a pipe joint for a deepwater sea pipe, which comprises a joint main pipe, a first limiting section and a second limiting section, wherein one end of the first limiting section and one end of the second limiting section are respectively connected with two ends of the joint main pipe, the outer edge of the first limiting section and the outer edge of the second limiting section protrude out of the joint main pipe, and a first tail section pipe and a second tail section pipe are respectively connected with the other ends of the first limiting section and the second limiting section. The utility model solves the problem that the existing pipe joint for the deepwater sea pipe cannot well limit the overlarge movement of the deepwater sea pipe along different directions of an axis, so that the pipe joint is damaged due to overlarge load and leakage is caused. The utility model provides tension opposite to the moving direction when the sea pipe moves in different directions by welding the deep water sea pipe, thereby achieving the purposes of protecting the integrity and safety of facilities at the end part of the deep water sea pipe and underwater facilities connected with the deep water sea pipe.
Description
Technical Field
The utility model relates to the technical field of deepwater seabed sea pipe joints, in particular to a pipe joint for a deepwater sea pipe.
Background
The deep-water sea pipe belongs to the field of deep-water ocean engineering (water depth is more than 1000 m), and is mainly used for conveying production media between underwater production facilities and between the underwater production facilities and a floating platform. Steel catenary risers are generally considered to be deep water marine pipe-to-vessel extensions. The steel catenary riser is driven by the motion of the floating platform to generate certain tension load on the deepwater sea pipe connected with the steel catenary riser and end facilities (PLET, connectors, jumper pipes and the like) of the deepwater sea pipe, so that the steel catenary riser has high requirements on the sealing performance and the strength of the pipe joint under certain tension load. For example, chinese patent publication No. CN206256885U discloses an oil casing joint for deep sea oil, which can achieve good sealing effect, but aims at the problems that when a steel catenary riser is driven by a floating platform to move, and tension loads generated by a deep sea pipe and an end facility thereof connected to the steel catenary riser are too large, the existing joint cannot well limit excessive movement of the deep sea pipe along different directions of an axis, and the deep sea pipe moves in different directions along the axis, which may cause too large load, and further cause the movement of a submarine pipeline and the end facility, and further affect the integrity and even damage of a connector and a jumper pipe, and cause leakage.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that the existing pipe joint for a deepwater sea pipe cannot well limit overlarge movement of the deepwater sea pipe along different directions of an axis, so that the pipe joint is damaged due to overlarge load and leakage is caused, and provides the pipe joint for the deepwater sea pipe. The utility model provides tension opposite to the moving direction when the sea pipe moves in different directions by welding the deep water sea pipe, thereby achieving the purposes of protecting the integrity and safety of facilities at the end part of the deep water sea pipe and underwater facilities connected with the deep water sea pipe.
In order to solve the technical problems, the utility model adopts the technical scheme that:
the utility model provides a coupling for deep water sea pipe, is responsible for including the joint, and one end is connected respectively and is responsible for both ends and outward flange protrusion in the joint and be responsible for first spacing section and the spacing section of second to and connect respectively at first tail section pipe and the second tail section pipe of the other end of the spacing section of first spacing section and second.
Further, the first limiting section comprises a hollow circular truncated cone, one end of the hollow circular truncated cone is coaxially connected with the lower bottom surface of the hollow circular truncated cone, the other end of the hollow circular truncated cone is coaxially connected with the joint main pipe, the outer diameter of the joint main pipe is smaller than that of the hollow circular truncated cone, and the structure of the second limiting section is the same as that of the first limiting section.
Furthermore, a first transition section is arranged between the first limiting section and the first tail section pipe, and a second transition section is arranged between the second limiting section and the second tail section pipe.
The utility model is produced by adopting a forging mode, and is welded and connected with a pipeline when an offshore deep-water sea pipe or a steel catenary riser is laid, and the pipeline is laid in place; the utility model is produced by integral forging of sections with different pipe diameters, the transition of the sections with different pipe diameters considers specific design proportion, the tension of over 300 tons along the axial direction is borne, the service life of 30 years is taken as design performance requirements, and the pipe joint can adopt ASTM 694F65 material to ensure the weldability of the sea pipe and the pipe joint.
In addition, the first limiting section and the second limiting section which are arranged oppositely and have outer edges protruding out of the joint main pipe are designed into a convex shape, so that after the pipe joint is welded with the marine pipe, the first limiting section and the second limiting section can be used as extra tension bearing parts to provide tension and resistance opposite to the moving direction when the marine pipe moves in different directions, and accordingly excessive movement of the deep-water marine pipe in different directions along the axis is limited, and the purposes of protecting the integrity and safety of facilities at the end part of the deep-water marine pipe and underwater facilities connected with the deep-water marine pipe are achieved.
Furthermore, the first transition section comprises a second hollow cylinder of which one end is connected with the upper bottom surface of the hollow circular truncated cone, and a second hollow circular truncated cone of which the lower bottom surface is coaxially connected with the other end of the second hollow cylinder, the upper bottom surface of the second hollow circular truncated cone is coaxially connected with the first tail section pipe, and the structure of the second transition section is the same as that of the first transition section.
Further, the outer diameter of the joint main pipe, the outer diameter of the second hollow cylinder and the outer diameter of the first tail section pipe are different.
Furthermore, the outer diameter of the joint main pipe is 328mm-332mm, and the length of the joint main pipe is 1260mm-1270 mm.
Further, the outer diameter of the second hollow cylinder is 338mm-342 mm.
Further, the outer diameter of the first tail section pipe is 322mm-326 mm.
It should be noted that the utility model takes the bearing of the tension of over 300 tons along the axis direction and the service life of 30 years as the design performance requirements, carries out special fatigue life analysis on the welding seam position, and calculates the reasonable stress variation range of the welding seam position, thereby obtaining the optimal pipe joint structural parameters.
Furthermore, the surfaces of the joint main pipe, the first limiting section, the second limiting section, the first tail section pipe, the second tail section pipe, the first transition section and the second transition section are coated with anti-corrosion coatings.
Furthermore, the joint main pipe, the first limiting section, the second limiting section, the first tail section pipe, the second tail section pipe, the first transition section and the second transition section are all made of carbon steel materials.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, the first limiting section and the second limiting section which are arranged oppositely and have outer edges protruding out of the joint main pipe are designed into the protruding shapes of the first limiting section and the second limiting section, so that after the pipe joint is welded with the submarine pipe, the first limiting section and the second limiting section can be used as extra tension bearing parts to assist in providing and bearing reverse tension for limiting the movement of the deepwater submarine pipe along the axis in different directions, thereby limiting the overlarge movement of the deepwater submarine pipe along the axis in different directions, and achieving the purposes of protecting the integrity and safety of end facilities of the deepwater submarine pipe and underwater facilities connected with the end facilities.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the structure seen from a in fig. 1.
The graphic symbols are illustrated as follows:
1-a joint main pipe, 2-a first limiting section, 21-a hollow circular truncated cone, 22-a hollow cylinder, 3-a second limiting section, 4-a first tail section pipe, 5-a second tail section pipe, 6-a first transition section, 61-a second hollow cylinder, 62-a second hollow circular truncated cone, and 7-a second transition section.
Detailed Description
The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
As shown in fig. 1 to 2, a pipe joint for a deepwater sea pipe comprises a joint main pipe 1, a first limiting section 2 and a second limiting section 3, wherein one end of the first limiting section 2 and one end of the second limiting section 3 are respectively connected to two ends of the joint main pipe 1, the outer edges of the first limiting section 2 and the second limiting section 3 protrude out of the joint main pipe 1, and a first tail section pipe 4 and a second tail section pipe 5 are respectively connected to the other ends of the first limiting section 2 and the second limiting section 3.
As shown in fig. 2, the first limiting section 2 includes a hollow circular truncated cone 21, a hollow cylinder 22 having one end coaxially connected to the lower bottom surface of the hollow circular truncated cone 21, the other end of the hollow cylinder 21 is coaxially connected to the joint main pipe 1, the outer diameter of the joint main pipe 1 is smaller than that of the hollow cylinder 21, and the structure of the second limiting section 3 is the same as that of the first limiting section 2.
As shown in fig. 1, a first transition section 6 is further arranged between the first limiting section 2 and the first tail section pipe 4, and a second transition section 7 is further arranged between the second limiting section 3 and the second tail section pipe 5.
The embodiment adopts a forging mode for production, and is welded and connected with a pipeline when an offshore deep water sea pipe or a steel catenary riser is laid, and the pipeline is laid in place; the pipe joint is produced by integrally forging different pipe diameter sections, the different pipe diameter sections are in transition consideration of specific design proportion, the pipe joint is required to bear tension of over 300 tons along the axial direction and have the service life of 30 years as design performance, and the pipe joint is made of ASTM 694F65 materials to ensure the weldability of the sea pipe and the pipe joint.
The first limiting section 2 and the second limiting section 3 are designed in a convex shape through the first limiting section 2 and the second limiting section 3 which are arranged oppositely and have outer edges protruding out of the joint main pipe 1, so that after the pipe joint is welded with the marine pipe, the first limiting section 2 and the second limiting section 3 can be used as extra tension bearing parts to provide tension and resistance opposite to the moving direction when the marine pipe moves in different directions, and accordingly excessive movement of the deep-water marine pipe in different directions along the axis is limited, and the purposes of protecting the integrity and safety of end facilities of the deep-water marine pipe and underwater facilities connected with the end facilities of the deep-water marine pipe are achieved.
As shown in fig. 2, the first transition section 6 includes a second hollow cylinder 61 having one end connected to the upper bottom surface of the hollow cylinder 21, and a second hollow cylinder 62 having a lower bottom surface coaxially connected to the other end of the second hollow cylinder 61, the upper bottom surface of the second hollow cylinder 62 is coaxially connected to the first tail pipe 2, and the structure of the second transition section 7 is the same as that of the first transition section 6.
In this embodiment, the outer diameter of the joint main pipe 1, the outer diameter of the second hollow cylinder 61, and the outer diameter of the first end pipe 4 are different from each other.
In this embodiment, the outer diameter of the joint main pipe 1 is 330mm, and the length of the joint main pipe 1 is 1265 mm.
In this embodiment, the outer diameter of the second hollow cylinder 61 is 340 mm.
In this embodiment, the outer diameter of the first tail pipe 4 is 324 mm.
In the embodiment, the tensile force of over 300 tons along the axial direction and the service life of 30 years are taken as design performance requirements, the special fatigue life analysis is carried out on the welding seam position, and the reasonable stress variation range of the welding seam position is calculated, so that the optimal pipe joint structural parameters are obtained.
In this embodiment, the surfaces of the joint main pipe 1, the first limiting section 2, the second limiting section 3, the first tail section pipe 4, the second tail section pipe 5, the first transition section 6 and the second transition section 7 are coated with an anti-corrosion coating.
In this embodiment, the joint main pipe 1, the first limiting section 2, the second limiting section 3, the first tail section pipe 4, the second tail section pipe 5, the first transition section 6 and the second transition section 7 are all made of carbon steel.
Example 2
This embodiment is similar to embodiment 1 except that the outer diameter of the main joint pipe 1 is 328mm, the length of the main joint pipe 1 is 1260mm, the outer diameter of the second hollow cylinder 61 is 338mm, and the outer diameter of the first tail pipe 4 is 322 mm. Other structures and principles of this embodiment are the same as those of embodiment 1.
Example 3
This embodiment is similar to embodiment 1 except that the outer diameter of the main joint pipe 1 in this embodiment is 332mm, the length of the main joint pipe 1 is 1270mm, the outer diameter of the second hollow cylinder 61 is 342mm, and the outer diameter of the first tail pipe 4 is 326 mm. Other structures and principles of this embodiment are the same as those of embodiment 1.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a coupling for deep water sea pipe, its characterized in that is including connecting person in charge (1), one end is connected respectively connect and be responsible for (1) both ends and outward flange protrusion in connect the spacing section of first spacing section (2) and the spacing section of second (3) of being responsible for (1), and connect respectively first tail section pipe (4) and second tail section pipe (5) of the other end of the spacing section of first spacing section (2) and second (3).
2. The pipe joint for the deepwater marine pipe according to claim 1, wherein the first limiting section (2) comprises a hollow circular truncated cone (21), a hollow cylinder (22) with one end coaxially connected with the lower bottom surface of the hollow circular truncated cone (21), the other end of the hollow cylinder (22) is coaxially connected with the joint main pipe (1), the outer diameter of the joint main pipe (1) is smaller than that of the hollow cylinder (22), and the structure of the second limiting section (3) is the same as that of the first limiting section (2).
3. The pipe joint for deepwater marine pipes according to claim 2, wherein a first transition section (6) is further arranged between the first limiting section (2) and the first tail section pipe (4), and a second transition section (7) is further arranged between the second limiting section (3) and the second tail section pipe (5).
4. A pipe joint for deep water sea pipes according to claim 3, characterized in that the first transition section (6) comprises a second hollow cylinder (61) with one end connected to the upper bottom surface of the hollow circular truncated cone (21), and a second hollow circular truncated cone (62) with the lower bottom surface coaxially connected to the other end of the second hollow cylinder (61), the upper bottom surface of the second hollow circular truncated cone (62) is coaxially connected to the first tail section pipe (4), and the second transition section (7) has the same structure as the first transition section (6).
5. The pipe joint for deepwater marine pipes according to claim 4, characterized in that the outer diameter of the joint main pipe (1), the outer diameter of the second hollow cylinder (61) and the outer diameter of the first end section pipe (4) are different.
6. The pipe joint for deepwater marine pipes according to claim 5, characterized in that the outer diameter of the joint main pipe (1) is 328-332 mm, and the length of the joint main pipe (1) is 1260-1270 mm.
7. The pipe joint for deepwater marine pipes according to claim 5, characterized in that the outer diameter of the second hollow cylinder (61) is 338-342 mm.
8. The pipe joint for deepwater marine pipes according to claim 5, characterized in that the outer diameter of the first end section pipe (4) is 322-326 mm.
9. The pipe joint for deep water sea pipes according to claim 3, characterized in that the surfaces of the joint main pipe (1), the first limiting section (2), the second limiting section (3), the first tail section pipe (4), the second tail section pipe (5), the first transition section (6) and the second transition section (7) are coated with an anti-corrosion coating.
10. The pipe joint for deep water sea pipes according to claim 3, characterized in that the joint main pipe (1), the first limiting section (2), the second limiting section (3), the first tail section pipe (4), the second tail section pipe (5), the first transition section (6) and the second transition section (7) are all made of carbon steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122634208.7U CN216201239U (en) | 2021-10-28 | 2021-10-28 | Pipe joint for deepwater sea pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122634208.7U CN216201239U (en) | 2021-10-28 | 2021-10-28 | Pipe joint for deepwater sea pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216201239U true CN216201239U (en) | 2022-04-05 |
Family
ID=80896577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122634208.7U Active CN216201239U (en) | 2021-10-28 | 2021-10-28 | Pipe joint for deepwater sea pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216201239U (en) |
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2021
- 2021-10-28 CN CN202122634208.7U patent/CN216201239U/en active Active
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