Ocean pipeline and deep sea oil and gas exploitation ship

Abstract

The invention relates to the technical field of deep sea transportation, and provides a marine pipeline and a deep sea oil and gas exploitation ship. The marine pipeline comprises a connecting assembly, a sheath assembly and at least two pipeline bodies. The connecting assemblies are arranged at at least one end of the pipeline, each connecting assembly is provided with an annular clamping groove, and the connecting assemblies are used for connecting the pipeline and the adjacent pipeline; one end of the sheath assembly wraps the pipeline, the other end of the sheath assembly wraps the connecting assembly, and a boss is arranged on the inner wall of the sheath assembly and used for being meshed with the annular clamping groove. The marine pipeline provided by the invention is used for overcoming the defects of pipelines in the prior art, and the sheath assembly is arranged outside the connecting assembly and the pipeline to absorb impact and flapping from sea waves, so that the influence of repeated impact of waves and the dynamic environment of the pipeline on the pipeline and the connecting assembly can be effectively avoided; the strength of the connecting assembly can be improved, the fracture probability of the joint of the pipeline and the adjacent pipeline is reduced, and the transportation safety of the marine pipeline can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of deep - sea transportation, and particularly to an ocean pipeline and a deep - sea oil and gas production vessel. Background Art

[0002] A pipeline strengthening joint is a special component used to enhance the connection strength and sealing performance of pipelines. Its main function is to ensure that the pipeline can maintain a safe and effective connection under various working environments, especially in harsh conditions such as extreme temperatures, high pressures, corrosion, etc.

[0003] Currently, deep - sea oil and gas production generally adopts transportation between vessels over long distances or between vessels and the shore. The pipeline generally floats on the sea surface. The continuous movement of waves will cause the pipeline to have frequent displacements, swings, and vibrations. The repeated impact of waves and the dynamic environment of the pipeline will lead to a decrease in the strength of the joint. In severe cases, it will cause the joint to break, greatly affecting the transportation safety of the ocean pipeline. Summary of the Invention

[0004] The first aspect of the present invention provides an ocean pipeline to solve the defects of the pipeline in the prior art. By providing a sheath assembly outside the connection component and the pipeline to absorb the impact and beating from the sea waves, it can effectively avoid the repeated impact of waves and the influence of the dynamic environment of the pipeline on the pipeline and the connection component, improve the strength of the connection component, reduce the probability of fracture at the connection between the pipeline and the adjacent pipeline, and improve the transportation safety of the ocean pipeline.

[0005] The second aspect of the present invention provides a deep - sea oil and gas production vessel.

[0006] The ocean pipeline provided by the present invention includes: At least two pipelines; A connection component provided at at least one end of the pipeline. The connection component has an annular clamping groove, and the connection component is used to connect the pipeline and the adjacent pipeline; A sheath assembly, one end of which wraps around the pipeline and the other end wraps around the connection component. A boss is provided on the inner wall of the sheath assembly, and the boss is used to engage with the annular clamping groove.

[0007] According to the ocean pipeline provided by the present invention, a plurality of the annular clamping grooves are provided, and the plurality of annular clamping grooves are arranged at intervals along the length direction of the connection component; The number and position of the bosses match the number and position of the annular clamping grooves.

[0008] According to the ocean pipeline provided by the present invention, the connection component includes a male joint and a female joint. The male joint is sleeved on one end of the pipeline, the female joint is sleeved on the other end of the pipeline, and the annular clamping groove is provided at the corresponding positions of the male joint and the female joint; The male joint and the female joint are matched for connecting the pipeline and the adjacent pipeline.

[0009] For the subsea pipeline provided by the present invention, one end of the female joint away from the pipeline is provided with a first annular stepped groove, and the bottom wall of the first annular stepped groove is provided with a plurality of first connection holes and a plurality of second connection holes; The pipeline is provided with a first flange matching with the first annular stepped groove, and the first flange is provided with a third connection hole for fastening connection with the first connection hole, and the second connection hole is used for fastening connection with the male joint.

[0010] For the subsea pipeline provided by the present invention, one end of the male joint away from the pipeline is provided with a second annular stepped groove, and the bottom wall of the second annular stepped groove is provided with a plurality of fourth connection holes and a plurality of fifth connection holes; The pipeline is provided with a second flange matching with the second annular stepped groove, and the second flange is provided with a sixth connection hole for fastening connection with the fourth connection hole, and the fifth connection hole is used for fastening connection with the female joint.

[0011] For the subsea pipeline provided by the present invention, the sheath assembly includes a male sheath and a female sheath. The male sheath is wrapped outside the male joint and the pipeline, the female sheath is wrapped outside the female joint and the pipeline, and the boss is arranged at corresponding positions of the male sheath and the female sheath.

[0012] For the subsea pipeline provided by the present invention, the male sheath is provided with a T-shaped groove, and the position of the T-shaped groove corresponds to the position of the fifth connection hole. The T-shaped groove is used for the fastening connection between the fifth connection hole and the female joint.

[0013] For the subsea pipeline provided by the present invention, the sheath assembly further includes a pipe protection sheath. The pipe protection sheath is wrapped outside the pipeline and is located between the male sheath and the female sheath. The pipe protection sheath is used for protecting the pipeline.

[0014] For the subsea pipeline provided by the present invention, the sheath assembly is integrally formed.

[0015] The deep-sea oil and gas production ship provided by the present invention includes the subsea pipeline described in any one of the foregoing items.

[0016] In the marine pipeline provided by the present invention, when the boss provided on the inner wall of the sheath assembly engages with the annular card slot of the connection assembly, it can provide a strong connection force, prevent the connection assembly from loosening or displacing during use, and improve the integrity of the connection assembly and the pipeline. This structural design not only makes the connection of the marine pipeline more stable, but also effectively protects the pipeline and the connection assembly from the erosion of seawater and the impact of external objects, thereby increasing the service life of the pipeline.

[0017] Compared with the prior art, in the marine pipeline provided by the embodiment of the present invention, by providing a sheath assembly outside the connection assembly and the pipeline to absorb the impact and beating from the waves, in this way, the repeated impact of the waves and the dynamic environment of the pipeline on the pipeline and the connection assembly can be effectively avoided, the strength of the connection assembly can be improved, the probability of fracture at the connection between the pipeline and the adjacent pipeline can be reduced, and the transportation safety of the marine pipeline can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 is a schematic cross-sectional structure diagram of the marine pipeline provided by the embodiment of the present invention.

[0020] Figure 2 is Figure 1 a partial enlarged structure diagram at position A in

[0021] Figure 3 is an exploded structure diagram of the marine pipeline provided by the embodiment of the present invention.

[0022] Figure 4 is a schematic structure diagram of the male joint provided by the embodiment of the present invention.

[0023] Figure 5 is a schematic structure diagram of the female joint provided by the embodiment of the present invention.

[0024] Figure 6 is a schematic structure diagram of the pipeline provided by the embodiment of the present invention.

[0025] Figure 7 is a schematic structure diagram of the male sheath provided by the embodiment of the present invention.

[0026] Reference numerals: 100: Pipe; 110: First flange; 120: Third connection hole; 130: Second flange; 140: Sixth connection hole; 200: Connection assembly; 210: Annular clamping groove; 220: Female connector; 221: First annular stepped groove; 222: First connection hole; 223: Second connection hole; 230: Male connector; 231: Second annular stepped groove; 232: Fourth connection hole; 233: Fifth connection hole; 300: Sheath assembly; 310: Boss; 320: Male sheath; 321: T-shaped groove; 330: Female sheath; 340: Protective sheath. Detailed implementation mode

[0027] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0028] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0029] In the embodiments of the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0030] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0031] Figure 1 is a schematic cross-sectional structure diagram of an offshore pipeline provided by an embodiment of the present invention; Figure 2 is Figure 1 a partial enlarged structure diagram of part A in Figure 3 is an exploded structure diagram of an offshore pipeline provided by an embodiment of the present invention.

[0032] Referring to Figures 1 to 3 , in an alternative embodiment of the present invention, the offshore pipeline includes at least two pipes 100, a connection assembly 200, and a sheath assembly 300. The pipes 100 can be made of high-strength steel to ensure that they can withstand huge pressures and external impact forces in the marine environment. Among them, the connection assembly 200 is provided at at least one end of the pipe 100. The connection assembly 200 has an annular card slot 210. The connection assembly 200 is used to connect the pipe 100 and the adjacent pipe 100. One end of the sheath assembly 300 wraps around the pipe 100, and the other end wraps around the connection assembly 200. A boss 310 is provided on the inner wall of the sheath assembly 300. The boss 310 is used to engage with the annular card slot 210.

[0033] Referring to Figures 1 to 3 , it can be understood that in the offshore pipeline provided by the embodiment of the present invention, when the boss 310 provided on the inner wall of the sheath assembly 300 engages with the annular card slot 210 of the connection assembly 200, it can provide a strong connection force, which can prevent the connection assembly 200 from loosening or displacing during use, and can improve the integrity of the connection assembly 200 and the pipe 100. This structural design not only makes the offshore pipeline more stable when connected, but also effectively protects the pipe 100 and the connection assembly 200 from being eroded by seawater and impacted by external objects, thereby increasing the service life of the pipe 100.

[0034] Compared with the prior art, in the marine pipeline provided by the embodiment of the present invention, a sheath assembly 300 is provided outside the connection assembly 200 and the pipeline 100 to absorb the impact and beating from the sea waves. In this way, the repeated impact of the waves and the dynamic environment of the pipeline 100 on the pipeline 100 and the connection assembly 200 can be effectively avoided, the strength of the connection assembly 200 can be improved, the probability of fracture at the connection between the pipeline 100 and the adjacent pipeline 100 can be reduced, and the transportation safety of the marine pipeline can be improved.

[0035] Continue to refer to Figures 1 to 3 , in an alternative embodiment of the present invention, a plurality of annular grooves 210 are provided, and the plurality of annular grooves 210 are arranged at intervals along the length direction of the connection assembly 200. The specific quantity and interval can be adaptively set according to the actual situation; correspondingly, the quantity and position of the bosses 310 match those of the annular grooves 210. After the assembly is completed, the bosses 310 and the annular grooves 210 will be in one-to-one correspondence and tightly engaged.

[0036] It can be understood that in the marine environment, the pipeline 100 is subjected to various external forces such as sea waves and ocean currents. At the connection between the pipeline 100 and the adjacent pipeline 100, a single connection point may not be able to withstand these external forces. In the marine pipeline provided by the embodiment of the present invention, the design of the plurality of annular grooves 210 and the bosses 310 can, on the one hand, disperse the external forces and improve the strength of the pipeline 100 and the connection assembly 200. On the other hand, the cooperation of the plurality of annular grooves 210 and the bosses 310 can effectively limit the position of the connection assembly 200 relative to the pipeline 100, thereby increasing the connection stability between the pipeline 100 and the connection assembly 200.

[0037] Secondly, the infiltration of seawater will have a serious impact on substances such as oil and gas inside the pipeline 100, reducing the transportation efficiency and even causing safety accidents. In the marine pipeline provided by the embodiment of the present invention, the tight engagement of the plurality of annular grooves 210 and the bosses 310 will result in a butt joint surface where the plurality of annular grooves 210 and the bosses 310 are in surface-to-surface contact. This design can form an effective sealing structure, improve the sealing performance at the connection between the pipeline 100 and the connection assembly 200, and effectively prevent seawater from infiltrating into the pipeline 100.

[0038] Figure 4 is a schematic structural diagram of the male joint provided by the embodiment of the present invention; Figure 5 is a schematic structural diagram of the female joint provided by the embodiment of the present invention.

[0039] Refer to Figures 1 to 5, in an alternative embodiment of the present invention, the connecting component 200 includes a male connector 230 and a female connector 220. The male connector 230 is sleeved on one end of the pipe 100, and the female connector 220 is sleeved on the other end of the pipe 100. A plurality of annular clamping grooves 210 are provided on the outer surfaces of the female connector 220 and the male connector 230, and are arranged at intervals along the respective length directions of the male connector 230 and the female connector 220. The male connector 230 and the female connector 220 are matched to connect the pipe 100 and the adjacent pipe 100.

[0040] Refer to Figure 5 , on the female connector 220 provided in the embodiment of the present invention, a plurality of annular clamping grooves 210 are provided. Along the direction towards the pipe 100, they are successively the first rectangular annular groove, the second rectangular annular groove, the third rectangular annular groove, and the fourth rectangular annular groove. The side wall of the first rectangular annular groove close to the port of the pipe 100 is spaced 50 mm from one of the ports, that is, the thickness of the first flange 110 in the following text is 50 mm. The width of the first rectangular annular groove is 50 mm, and its depth is 25 mm. The second rectangular annular groove is spaced 150 mm from one of the ports of the pipe 100. The width of the second rectangular annular groove is 40 mm, and its depth is 25 mm. The third rectangular annular groove is spaced 210 mm from one of the ports of the pipe 100. The width of the third rectangular annular groove is 30 mm, and its depth is 25 mm. The fourth rectangular annular groove is spaced 260 mm from one of the ports of the pipe 100. The width of the fourth rectangular annular groove is 20 mm, and its depth is 25 mm.

[0041] Refer to Figure 4 , on the male connector 230 provided in the embodiment of the present invention, a plurality of annular clamping grooves 210 are also provided. Along the direction towards the pipe 100, they are successively the fifth rectangular annular groove, the sixth rectangular annular groove, the seventh rectangular annular groove, and the eighth rectangular annular groove. The fifth rectangular annular groove is spaced 30 mm from the port of the pipe 100. The width of the fifth rectangular annular groove is 90 mm, and its depth is 25 mm. The sixth rectangular annular groove is spaced 160 mm from one of the ports of the pipe 100. The width of the sixth rectangular annular groove is 30 mm, and its depth is 25 mm. The seventh rectangular annular groove is spaced 210 mm from one of the ports of the pipe 100. The width of the seventh rectangular annular groove is 30 mm, and its depth is 25 mm. The eighth rectangular annular groove is spaced 260 mm from one of the ports of the pipe 1001. The width of the eighth rectangular annular groove 17 is 20 mm, and its depth is 25 mm.

[0042] Refer to Figure 4 and Figure 5, it can be understood that the designs of the male connector 230 and the female connector 220 can make the connection of the pipeline 100 more convenient and fast. During the connection process, only by aligning and connecting the male connector 230 and the female connector 220, the connection between the pipelines 100 can be achieved. This design greatly improves the construction efficiency and reduces the connection time and labor costs. At the same time, the designs of the male connector 230 and the female connector 220 also improve the strength and sealing performance of the connection part of the pipeline 100.

[0043] Figure 6 is a schematic structural diagram of the pipeline provided by an embodiment of the present invention.

[0044] Refer to Figure 5 and Figure 6 , in an alternative embodiment of the present invention, one end of the female connector 220 away from the pipeline 100 is provided with a first annular stepped groove 221. The bottom wall of the first annular stepped groove 221 is provided with a plurality of first connection holes 222 and second connection holes 223. The plurality of first connection holes 222 and the plurality of second connection holes 223 are alternately arranged at intervals and are evenly arranged around the circumference of the first annular stepped groove 221.

[0045] The pipeline 100 is provided with a first flange 110 that matches the first annular stepped groove 221. The first flange 110 is provided with a third connection hole 120 that is fastened and connected to the first connection hole 222. The second connection hole 223 is used for fastening and connecting to the male connector 230. During the connection process, the female connector 220 can be sleeved into the pipeline 100 from the other end of the pipeline 100 until the bottom wall of the first annular stepped groove 221 abuts against the first flange 110. Then, twist one of the female connector 220 and the pipeline 100 to align the first connection hole 222 and the third connection hole 120. Finally, insert a screw or bolt through the first connection hole 222 and the third connection hole 120 to achieve the fastening connection between the female connector 220 and the pipeline 100.

[0046] It can be understood that the designs of the first annular stepped groove 221 and the first flange 110 can increase the area of the connection part between the female connector 220 and the pipeline 100, make the stress at the connection part of the two more uniform, and thus enhance the strength of the connection part between the female connector 220 and the pipeline 100. Secondly, when the female connector 220 is connected to the pipeline 100, based on the locking force provided by the fastener, the first annular stepped groove 221 and the first flange 110 are tightly fitted, and a stable abutting structure can also be formed, effectively improving the sealing performance of the connection part between the female connector 220 and the pipeline 100.

[0047] Refer to Figure 2 and Figure 4, in an alternative embodiment of the present invention, a second annular stepped groove 231 is provided at one end of the male connector 230 away from the pipeline 100. A plurality of fourth connection holes 232 and fifth connection holes 233 are provided on the bottom wall of the second annular stepped groove 231. The plurality of fourth connection holes 232 and the plurality of fifth connection holes 233 are alternately arranged at intervals and are evenly spaced around the circumference of the second annular stepped groove 231.

[0048] The pipeline 100 is provided with a second flange 130 that matches the second annular stepped groove 231. A sixth connection hole 140 for fastener connection with the first connection hole 222 is provided on the second flange 130. The fifth connection hole 233 is used for fastener connection with the female connector 220. During the connection process, the male connector 230 can be sleeved into the pipeline 100 from the other end of the pipeline 100 until the bottom wall of the second annular stepped groove 231 abuts against the second flange 130. Then, one of the male connector 230 and the pipeline 100 is twisted so that the fourth connection hole 232 and the sixth connection hole 140 are aligned. Finally, a screw or bolt is inserted into the fourth connection hole 232 and the sixth connection hole 140 to achieve fastener connection between the male connector 230 and the pipeline 100.

[0049] It can be understood that the design of the second annular stepped groove 231 and the second flange 130 can increase the area of the connection between the male connector 230 and the pipeline 100, making the stress at the connection between the two more uniform, and thus enhancing the strength of the connection between the male connector 230 and the pipeline 100. Secondly, when the male connector 230 is connected to the pipeline 100, based on the locking force provided by the fastener, the second annular stepped groove 231 and the second flange 130 are tightly fitted, and a stable abutting structure can also be formed, effectively improving the sealing performance of the connection between the male connector 230 and the pipeline 100.

[0050] Continue to refer to Figures 1 to 3 , in an alternative embodiment of the present invention, the sheath assembly 300 includes a male sheath 320 and a female sheath 330. The male sheath 320 is wrapped around the outside of the male connector 230 and the pipeline 100, and the female sheath 330 is wrapped around the outside of the female connector 220 and the pipeline 100. The boss 310 is provided on the inner walls of the male sheath 320 and the female sheath 330 along their respective lengths, and the boss 310 is an annular protrusion.

[0051] It can be understood that in a marine environment, the male connector 230 and the female connector 220 are easily affected by seawater erosion, attachment of marine organisms, and impact of external objects. In the marine pipeline provided by the embodiment of the present invention, the designs of the male sheath 320 and the female sheath 330 can effectively protect the male connector 230 and the female connector 220 respectively, provide a strong protective layer for them, prevent them from being damaged during use, and extend the service life of the male connector 230 and the female connector 220.

[0052] Among them, the setting of the boss 310 can engage with the annular card slot 210 of the connection component 200, further improving the connection stability and sealing performance of the pipeline 100. When the male sheath 320 and the female sheath 330 are wrapped outside the male connector 230 and the female connector 220, the boss 310 engages tightly with the annular card slot 210, forming a sealed connection structure to effectively prevent seawater from seeping into the interior of the pipeline 100.

[0053] Figure 7 It is a schematic structural diagram of the male sheath provided by an embodiment of the present invention.

[0054] Continue to refer to Figure 3 and Figure 7 In an alternative embodiment of the present invention, the male sheath 320 is provided with a T-shaped groove 321, and the position of the T-shaped groove 321 corresponds to the fifth connection hole 233. The T-shaped groove 321 is used for the fastening connection between the fifth connection hole 233 and the female connector 220.

[0055] Specifically, after the male connector 230 and the female connector 220 are respectively connected to the pipeline 100, the male sheath 320 and the female sheath 330 can be respectively installed outside the male connector 230 and the female connector 220. When it is necessary to connect the pipeline 100 with an adjacent pipeline 100, first align the second connection hole 223 on the female connector 220 with the fifth connection hole 233 on the male connector 230, then insert the fastener through the T-shaped groove 321 into the fifth connection hole 233 and the second connection hole 223 until it reaches the threaded hole provided on the pipeline 100. Finally, insert the fastening tool into the T-shaped groove 321 to fasten the fastener, thereby realizing the connection between the pipeline 100 and the adjacent pipeline 100.

[0056] It can be understood that when connecting the male sheath 320 and the female connector 220, the fastener can be easily inserted into the T-shaped groove 321 and passed through the second connection hole 223 and the fifth connection hole 233. This design effectively avoids the position interference between the fastening tool and the pipeline 100 during the fastening process, provides convenience for the fastening of the fastener, improves the connection efficiency between the male sheath 320 and the female connector 220, and reduces the installation time and difficulty.

[0057] Continue to refer to Figure 1 and Figure 3 In an alternative embodiment of the present invention, the sheath assembly 300 further includes a protective sheath 340. The protective sheath 340 wraps around the pipeline 100 and is located between the male sheath 320 and the female sheath 330. The protective sheath 340 is used to protect the pipeline 100.

[0058] It can be understood that in the marine environment, the pipeline 100 not only has to bear the pressure and corrosion of seawater, but may also be affected by various factors such as changes in seabed topography, marine biological activities, and impacts from external objects. In the marine pipeline provided by the embodiment of the present invention, the protection sleeve 340 can further protect the pipeline 100, provide an additional layer of protection for the pipeline 100, reduce the damage of these factors to the pipeline 100, and prevent the pipeline 100 from being damaged by the external environment during use.

[0059] Secondly, when the pipeline 100 is subjected to an external force impact, the protection sleeve 340 can absorb a part of the impact force, reduce the stress inside the pipeline 100, thereby protecting the pipeline 100 from being damaged. In other words, the protection sleeve 340 can also play a certain buffering role and reduce the damage to the pipeline 100 when it is subjected to an external force impact.

[0060] In an alternative embodiment of the present invention, the sheath assembly 300 is integrally formed by rubber injection molding. Specifically, after the two ends of the pipeline 100 are fixedly connected to the female joint 220 and the male joint 230 respectively, the whole passes through extrusion of PE materials such as extruded polyurethane or rubber by vulcanization process. After the pipeline 100 is connected to the adjacent pipeline 100, rubber injection molding is performed on the connection part. The material of the female sheath 330 in this process is a flowing liquid, which will fill into the first rectangular annular groove, the second rectangular annular groove, the third rectangular annular groove, and the fourth rectangular annular groove opened by the female joint 220. After the female sheath 330 cools and solidifies, it will form an uneven bite with the first rectangular annular groove, the second rectangular annular groove, the third rectangular annular groove, and the fourth rectangular annular groove opened by the female joint 220.

[0061] Similarly, after the two ends of the pipeline 100 are fixedly connected to the female joint 220 and the male joint 230 respectively, the whole passes through extrusion of PE materials such as extruded polyurethane or rubber by vulcanization process. The material of the male sheath 320 before this process is a flowing liquid, which will fill into the fifth rectangular annular groove, the sixth rectangular annular groove, the seventh rectangular annular groove, and the eighth rectangular annular groove opened by the male joint 230. After the male sheath 320 cools and solidifies, it will form an uneven bite with the fifth rectangular annular groove, the sixth rectangular annular groove, the seventh rectangular annular groove, and the eighth rectangular annular groove opened by the male joint 230.

[0062] It can be understood that the rubber material has good elasticity and sealing performance, which can effectively protect the pipeline 100 and the connection component 200. Secondly, the elasticity of the rubber enables the sheath component 300 to tightly wrap around the pipeline 100 and the connection component 200, which can adapt to pipelines 100 of different sizes and shapes and provide a certain buffer when the pipeline 100 is subjected to external forces. In addition, the sealing performance of the rubber can prevent seawater from seeping into the interior of the pipeline 100, ensuring the sealing of the pipeline 100. In addition, the integrally formed sheath component 300 has no seams, reducing potential leakage points and improving the overall sealing and stability of the subsea pipeline.

[0063] The second aspect of the embodiments of the present invention provides a deep-sea oil and gas production vessel. The deep-sea oil and gas production vessel includes the subsea pipeline described in any one of the foregoing. It can be understood that since the deep-sea oil and gas production vessel provided by the present invention includes the subsea pipeline described in any one of the foregoing, it also has the beneficial effects of the subsea pipeline described in any one of the foregoing. For specific beneficial effects, please refer to the foregoing description and will not be elaborated herein.

[0064] It should be noted that the technical solutions in the various embodiments of the present invention can be combined with each other, but the basis for the combination is that those of ordinary skill in the art can implement it; when the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist, that is, it does not belong to the protection scope of the present invention either.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An ocean pipeline, characterized in that, Comprising: At least two pipes (100); A connecting component (200) provided at at least one end of the pipe (100), the connecting component (200) having an annular clamping groove (210), and the connecting component (200) being used for connecting the pipe (100) and the adjacent pipe (100); A sheath component (300) with one end wrapped around the pipe (100) and the other end wrapped around the connecting component (200), the inner wall of the sheath component (300) being provided with a boss (310), and the boss (310) being used for engaging with the annular clamping groove (210).

2. The marine pipeline according to claim 1, wherein, A plurality of the annular clamping grooves (210) are provided, and the plurality of annular clamping grooves (210) are spaced along the length direction of the connecting component (200); The number and position of the bosses (310) match the number and position of the annular clamping grooves (210).

3. The subsea pipeline according to claim 2, characterized in that, The connecting component (200) includes a male joint (230) and a female joint (220), the male joint (230) being sleeved on one end of the pipe (100), the female joint (220) being sleeved on the other end of the pipe (100), and the annular clamping groove (210) being provided at corresponding positions of the male joint (230) and the female joint (220); The male joint (230) and the female joint (220) are matched so as to be used for connecting the pipe (100) and the adjacent pipe (100).

4. The subsea pipeline according to claim 3, characterized in that, One end of the female joint (220) away from the pipe (100) is provided with a first annular stepped groove (221), and the bottom wall of the first annular stepped groove (221) is provided with a plurality of first connecting holes (222) and a plurality of second connecting holes (223); The pipe (100) is provided with a first flange (110) matching the first annular stepped groove (221), the first flange (110) is provided with a third connecting hole (120) for fastener connection with the first connecting hole (222), and the second connecting hole (223) is used for fastener connection with the male joint (230).

5. The offshore pipeline according to claim 3, wherein, One end of the male joint (230) away from the pipe (100) is provided with a second annular stepped groove (231), and the bottom wall of the second annular stepped groove (231) is provided with a plurality of fourth connecting holes (232) and a plurality of fifth connecting holes (233); The pipe (100) is provided with a second flange (130) matching the second annular stepped groove (231), the second flange (130) is provided with a sixth connecting hole (140) for fastener connection with the fourth connecting hole (232), and the fifth connecting hole (233) is used for fastener connection with the female joint (220).

6. The subsea pipeline according to claim 5, wherein, The sheath assembly (300) includes a male sheath (320) and a female sheath (330). The male sheath (320) is wrapped around the outside of the male connector (230) and the pipe (100), and the female sheath (330) is wrapped around the outside of the female connector (220) and the pipe (100). The boss (310) is provided at corresponding positions of the male sheath (320) and the female sheath (330).

7. The subsea pipeline according to claim 6, wherein The male sheath (320) is provided with a T-shaped groove (321). The position of the T-shaped groove (321) corresponds to the position of the fifth connection hole (233). The T-shaped groove (321) is used for the fastener connection between the fifth connection hole (233) and the female connector (220).

8. The marine pipeline according to claim 6, wherein, The sheath assembly (300) further includes a pipe protection sheath (340). The pipe protection sheath (340) is wrapped around the outside of the pipe (100) and is located between the male sheath (320) and the female sheath (330). The pipe protection sheath (340) is used to protect the pipe (100).

9. The subsea pipeline according to any one of claims 1 to 8, characterized in that, The sheath assembly (300) is integrally formed.

10. An offshore oil and gas production vessel for deep sea, characterized in that, Including the subsea pipeline according to any one of claims 1 to 9.

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