Ocean floating pipeline and deep sea oil and gas exploitation ship

Abstract

The invention relates to the technical field of deep sea transportation, and provides an ocean floating pipeline and a deep sea oil and gas exploitation ship. The marine floating pipeline comprises a pipeline assembly and a sheath assembly, the interior of the pipeline assembly is hollow, and the pipeline assembly is used for conveying a medium; the sheath assembly wraps the outer side of the pipeline assembly, the sheath assembly and the pipeline assembly extend in the same direction, a hollow floating cavity is formed in the sheath assembly, and the floating cavity is arranged in the length direction of the sheath assembly. According to the marine floating pipeline, the defect that in the prior art, the floatability of a pipeline is poor is overcome, the floatability can be effectively improved by arranging the floating cavity, and the influence of marine environment factors such as stormy waves, tides and ocean currents on the marine floating pipeline can be reduced; therefore, the risk of pipeline damage caused by drifting, deformation or collision with other objects of the pipeline can be reduced.

Description

Technical Field

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

[0002] Currently, deep - sea oil and gas exploitation generally adopts transportation between long - distance ships or between ships and the shore. The pipeline generally floats on the sea surface. The floating performance of existing ocean pipelines is weak. Pipelines with weak floating performance may be more easily affected by ocean environmental factors such as wind, waves, tides, and ocean currents. This may cause the pipeline to drift, deform, or collide with other objects, thus increasing the risk of pipeline damage. Summary of the Invention

[0003] A first aspect of the present invention provides an ocean floating pipeline to solve the defect of weak floating performance of pipelines in the prior art. By setting a floating cavity, the floating performance can be effectively improved, and the influence of ocean environmental factors such as wind, waves, tides, and ocean currents on the ocean floating pipeline can be reduced. Thus, the risk of pipeline drift, deformation, or collision with other objects resulting in pipeline damage can be reduced.

[0004] A second aspect of the present invention provides a deep - sea oil and gas production vessel.

[0005] The ocean floating pipeline provided by the present invention includes a pipeline component and a sheath component. The pipeline component is hollow inside and is used for transporting a medium. The sheath component is wrapped outside the pipeline component and extends in the same direction as the pipeline component. A hollow floating cavity is formed inside the sheath component, and the floating cavity is arranged along the length direction of the sheath component.

[0006] According to the ocean floating pipeline provided by the present invention, the sheath component includes a sheath part and a plurality of buoyancy balls. The sheath part is wrapped outside the pipeline component, and the plurality of buoyancy balls are embedded in the sheath part. The buoyancy balls are of a hollow structure for defining the floating cavity.

[0007] According to the ocean floating pipeline provided by the present invention, the plurality of buoyancy balls are evenly spaced along the circumferential direction of the sheath part.

[0008] According to the ocean floating pipeline provided by the present invention, a connection component is further included. The pipeline component includes at least two pipelines. The connection component is arranged at at least one end of the pipeline. The connection component has an annular clamping groove and is used for connecting the pipeline and the adjacent pipeline. One end of the sheath part is wrapped around the pipeline, and the other end is wrapped around the connection component. A convex platform is provided on the inner wall of the sheath part, and the convex platform is used for engaging with the annular clamping groove.

[0009] According to the offshore floating pipeline provided by the present invention, a plurality of annular clamping grooves are provided, and the plurality of annular clamping grooves are arranged at intervals along the length direction of the connecting component; The number and position of the bosses match the number and position of the annular clamping grooves.

[0010] According to the offshore floating pipeline provided by the present invention, the connecting 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 grooves are arranged at corresponding positions of the male joint and the female joint; The male joint and the female joint match each other so as to be used for connecting the pipeline and the adjacent pipeline.

[0011] According to the offshore floating pipeline provided by the present invention, along the direction away from the male joint, the arrangement density of the buoyancy balls gradually decreases; And / or, along the direction away from the female joint, the arrangement density of the buoyancy balls gradually decreases.

[0012] According to the offshore floating pipeline provided by the present invention, the sheath assembly includes an inner sheath component and an outer sheath component. The inner sheath component wraps the pipeline component, the outer sheath component is sleeved on the outside of the inner sheath component, and the outer sheath component is arranged at an interval from the inner sheath component to define the floating cavity.

[0013] According to the offshore floating pipeline provided by the present invention, the sheath assembly is integrally formed.

[0014] The deep-sea oil and gas production ship provided by the present invention includes the offshore floating pipeline described in any one of the above.

[0015] For the offshore floating pipeline provided by the present invention, by providing the floating cavity, the buoyancy of the overall offshore floating pipeline in seawater can be effectively increased, so that the offshore floating pipeline can float better in the marine environment and reduce the situation of sinking due to its own gravity. In addition, the floating cavities arranged along the length direction can distribute the buoyancy more evenly, avoiding problems such as pipeline inclination and bending caused by uneven local buoyancy, and can further improve the stability of the offshore floating pipeline in water, enabling it to better adapt to the influence of external forces such as sea waves and ocean currents. Compared with the prior art, for the offshore floating pipeline provided by the present invention, the floating performance can be effectively improved by providing the floating cavity, and the influence of marine environmental factors such as wind waves, tides, and ocean currents on the offshore floating pipeline can be reduced, thereby reducing the risk of pipeline drift, deformation, or damage caused by collision with other objects. Description of the Drawings

[0016] 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 drawings in the following description 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.

[0017] Figure 1 It is a schematic cross-sectional structure diagram of a sheath assembly provided by an embodiment of the present invention.

[0018] Figure 2 It is a schematic cross-sectional structure diagram of an offshore floating pipeline provided by an embodiment of the present invention.

[0019] Figure 3 is Figure 2 A partial enlarged structure diagram at position A in

[0020] Figure 4 It is an exploded structure diagram of an offshore floating pipeline provided by an embodiment of the present invention.

[0021] Figure 5 It is a schematic structure diagram of a male joint provided by an embodiment of the present invention.

[0022] Figure 6 It is a schematic structure diagram of a female joint provided by an embodiment of the present invention.

[0023] Figure 7 It is a schematic structure diagram of a pipeline provided by an embodiment of the present invention.

[0024] Figure 8 It is a schematic structure diagram of a male sheath provided by an embodiment of the present invention.

[0025] Reference numerals: 10: Pipeline assembly; 100: Pipeline; 110: First flange; 120: Third connection hole; 130: Second flange; 140: Sixth connection hole; 200: Connection assembly; 210: Ring-shaped card slot; 220: Female joint; 221: First ring-shaped stepped groove; 222: First connection hole; 223: Second connection hole; 230: Male joint; 231: Second ring-shaped stepped groove; 232: Fourth connection hole; 233: Fifth connection hole; 30: Sheath assembly; 300: Sheath component; 310: Boss; 320: Male sheath; 321: T-shaped groove; 330: Female sheath; 340: Protective sheath; 400: Buoyancy ball. Detailed implementation manners

[0026] To make the objectives, technical solutions and advantages of the present invention more clear, the following will clearly and completely describe the technical solutions in the present invention with reference to 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.

[0027] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can 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 circumstances.

[0028] In the embodiments of the present application, unless otherwise clearly defined 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 simply means that the first feature is at a higher level than the second feature in terms of horizontal height. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature in terms of horizontal height.

[0029] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean 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 the present application. In this specification, the schematic descriptions 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.

[0030] Figure 1 is a schematic cross-sectional structure diagram of the sheath assembly provided by the embodiments of the present invention.

[0031] Refer to Figure 1, in the first aspect of the embodiments of the present invention, a marine floating pipeline is provided. The marine floating pipeline includes a pipeline component 10 and a sheath component 30. The inside of the pipeline component 10 is of a hollow structure. Such a design aims to provide a passage for the conveyance of media, enabling it to smoothly convey media such as oil and gas from one place to another, thereby meeting the requirements of media transmission in operations such as deep-sea oil and gas exploitation. The sheath component 30 is wrapped around the outside of the pipeline component 10 and extends in the same direction as the pipeline component 10. A hollow floating cavity is formed inside it, and this floating cavity is arranged along the length direction of the sheath component 30.

[0032] It can be understood that for the marine floating pipeline provided by the embodiments of the present invention, by setting such a floating cavity, the buoyancy of the overall marine floating pipeline in seawater can be effectively increased, enabling the marine floating pipeline to better float in the marine environment and reducing the situation of sinking due to its own gravity. In addition, the floating cavity arranged along the length direction can distribute the buoyancy more evenly, avoiding problems such as the pipeline 100 tilting and bending caused by uneven local buoyancy, and further enhancing the stability of the marine floating pipeline in water, enabling it to better adapt to the influence of external forces such as sea waves and ocean currents. Compared with the prior art, for the marine floating pipeline provided by the embodiments of the present invention, the floating performance can be effectively improved by setting the floating cavity, and the influence of marine environmental factors such as wind waves, tides, and ocean currents on the marine floating pipeline can be reduced, thereby reducing the risk of the pipeline 100 drifting, deforming, or colliding with other objects and causing damage to the pipeline 100.

[0033] Continue to refer to Figure 1 , in an alternative embodiment of the present invention, the sheath component 30 includes a sheath part 300 and a plurality of buoyancy balls 400. The sheath part 300 is wrapped around the outside of the pipeline component 10, and a plurality of buoyancy balls 400 are embedded in the sheath part 300, and the buoyancy balls 400 are of a hollow structure, thereby restricting the floating cavity, in other words, forming the floating cavity.

[0034] It can be understood that the sheath component 300 can directly protect the pipeline component 10, preventing the pipeline component 10 from being damaged by seawater erosion, attachment of marine organisms, and collision with external objects, and can extend the service life of the pipeline component 10. The design of the buoyancy ball 400 with a hollow structure can, on the one hand, generate sufficient buoyancy to provide good floating performance for the marine floating pipeline, ensuring that it can stably float at a set position in seawater and meet the requirements for the floating state of the pipeline 100 in deep-sea oil and gas exploitation and other operations. On the other hand, compared with a solid hollow floating cavity structure, the side walls of the buoyancy balls 400 arranged at intervals can play a good supporting role, avoiding the depression problem of the sheath component 300 caused by accidental factors such as impact. At the same time, the hollow characteristics of the buoyancy ball 400 and its side walls can also play a good buffering role. When the sheath component 300 is externally impacted, the buoyancy ball 400 can absorb the impact force of the impact through its own deformation, thereby reducing the direct impact of the impact on the pipeline component 10 and effectively improving the safety of the pipeline component 10.

[0035] The wall thickness of the buoyancy ball 400 is 1 mm, and the diameter of the buoyancy ball 400 is 10 mm. The 1-mm wall thickness and 10-mm diameter are reasonable choices for the design of the buoyancy ball 400. The relatively thin wall thickness helps to further reduce the weight of the buoyancy ball 400 while still maintaining sufficient structural strength. The 10-mm diameter provides sufficient surface area to generate sufficient buoyancy. This design is both economical and practical, meeting the requirements of engineering applications.

[0036] In an alternative embodiment of the present invention, a plurality of buoyancy balls 400 are evenly spaced along the circumferential direction of the sheath component 300. It can be understood that in a complex and changeable marine environment, external forces such as sea waves and ocean currents act on the marine floating pipeline from different directions. The buoyancy balls 400 are evenly spaced along the circumferential direction of the sheath component 300. In this way, no matter from which direction the external force is applied, the marine floating pipeline can rely on the evenly distributed buoyancy to maintain its own balance and stability. Such a setting method can enable the marine floating pipeline to receive relatively uniform buoyancy forces in all directions, effectively preventing deformation situations such as bending and twisting caused by excessive or insufficient buoyancy in a certain direction.

[0037] Figure 2 is a schematic cross-sectional structure diagram of the marine floating pipeline provided by an embodiment of the present invention; Figure 3 is Figure 2 a partial enlarged structure diagram at A in; Figure 4 is an exploded structure diagram of the marine floating pipeline provided by an embodiment of the present invention.

[0038] Refer to Figures 2 to 4, in an alternative embodiment of the present invention, the marine floating pipeline further includes a connection assembly 200. In this case, the pipeline assembly 10 includes at least two pipelines 100, and the pipelines 100 can be made of high-strength steel to ensure that they can withstand huge pressure and external impact forces in the marine environment. Among them, the connection assembly 200 is provided at at least one end of the pipeline 100. The connection assembly 200 has an annular clamping groove 210, and the connection assembly 200 is used to connect the pipeline 100 and the adjacent pipeline 100. One end of the sheath member 300 wraps around the pipeline 100, and the other end wraps around the connection assembly 200. A boss 310 is provided on the inner wall of the sheath member 300, and the boss 310 is used to engage with the annular clamping groove 210.

[0039] Refer to Figures 2 to 4 , it can be understood that in the marine floating pipeline provided by the embodiment of the present invention, when the boss 310 provided on the inner wall of the sheath member 300 engages with the annular clamping groove 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 pipeline 100. This structural design not only makes the marine floating pipeline more stable during connection, but also can effectively protect the pipeline 100 and the connection assembly 200 from being eroded by seawater and impacted by external objects, thereby increasing the service life of the pipeline 100.

[0040] Compared with the prior art, in the marine floating pipeline provided by the embodiment of the present invention, by providing a sheath member 300 outside the connection assembly 200 and the pipeline 100 to absorb the impact and beating from the waves, in this way, it can effectively avoid the repeated impact of the waves and the influence of the dynamic environment of the pipeline 100 on the pipeline 100 and the connection assembly 200, can improve the strength of the connection assembly 200, reduce the probability of fracture at the connection between the pipeline 100 and the adjacent pipeline 100, and can improve the transportation safety of the marine floating pipeline.

[0041] Continue to refer to Figures 2 to 4 , in an alternative embodiment of the present invention, a plurality of annular clamping grooves 210 are provided, and the plurality of annular clamping 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 clamping grooves 210. After assembly, the bosses 310 and the annular clamping grooves 210 will be in one-to-one correspondence and tightly engaged.

[0042] It can be understood that in the marine environment, the pipeline 100 is subject to various external forces such as ocean 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 floating pipeline provided by the embodiment of the present invention, the design of multiple annular slots 210 and bosses 310 can, on the one hand, disperse the external forces and improve the strength of the pipeline 100 and the connection component 200. On the other hand, the cooperation of multiple annular slots 210 and bosses 310 can effectively limit the position of the connection component 200 relative to the pipeline 100, thereby increasing the connection stability between the pipeline 100 and the connection component 200.

[0043] 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 floating pipeline provided by the embodiment of the present invention, the tight engagement of multiple annular slots 210 and bosses 310 will cause a butt joint surface where the multiple annular slots 210 and 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 component 200, and effectively prevent seawater from infiltrating into the pipeline 100.

[0044] Figure 5 is a schematic structural diagram of the male joint provided by the embodiment of the present invention; Figure 6 is a schematic structural diagram of the female joint provided by the embodiment of the present invention.

[0045] Refer to Figures 2 to 6 In an alternative embodiment of the present invention, the connection component 200 includes a male joint 230 and a female joint 220. The male joint 230 is sleeved on one end of the pipeline 100, and the female joint 220 is sleeved on the other end of the pipeline 100. Annular slots 210 are provided on the outer surfaces of both the female joint 220 and the male joint 230, and there are multiple of them. The multiple annular slots 210 are respectively arranged at intervals along the respective length directions of the male joint 230 and the female joint 220. The male joint 230 and the female joint 220 are matched to connect the pipeline 100 and the adjacent pipeline 100.

[0046] Refer to Figure 6, on the female joint 220 provided by the embodiment of the present invention, there are multiple annular grooves 210. Along the direction towards the pipeline 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 pipeline 100 is spaced 50 mm from one of the ports, that is, the thickness of the first flange 110 hereinafter 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 pipeline 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 pipeline 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 pipeline 100. The width of the fourth rectangular annular groove is 20 mm and its depth is 25 mm.

[0047] Refer to Figure 5 , on the male joint 230 provided by the embodiment of the present invention, there are also multiple annular grooves 210. Along the direction towards the pipeline 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 pipeline 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 pipeline 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 pipeline 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 pipeline 1001. The width of the eighth rectangular annular groove 17 is 20 mm and its depth is 25 mm.

[0048] Refer to Figure 5 and Figure 6 , it can be understood that the designs of the male joint 230 and the female joint 220 can make the connection of the pipeline 100 more convenient and fast. During the connection process, only by aligning and connecting the male joint 230 and the female joint 220 can the connection between the pipeline 100 and the pipeline 100 be realized. This design greatly improves the construction efficiency and reduces the connection time and labor cost. At the same time, the designs of the male joint 230 and the female joint 220 also improve the connection strength and sealing performance of the pipeline 100.

[0049] Refer to Figure 1 , in an alternative embodiment of the present invention, along the direction away from the male joint 230, the arrangement density of the buoyancy balls 400 gradually decreases; in some other alternative embodiments of the present invention, along the direction away from the female joint 220, the arrangement density of the buoyancy balls 400 gradually decreases.

[0050] It is understandable that in the areas near the male joint 230 and the female joint 220, since the connection parts are relatively weak and will bear greater stress after the pipeline 100 is connected, by arranging buoyancy balls 400 with a relatively large density in these areas, stronger buoyancy support can be provided, the stability of the male joint 230 and the female joint 220 can be better maintained, problems such as sinking and bending at the male joint 230 and the female joint 220 caused by insufficient buoyancy can be prevented, and the reliability of the connection can be ensured. In the parts far from the male joint 230 and the female joint 220, the overall force on the pipeline 100 is relatively uniform. Appropriately reducing the arrangement density of the buoyancy balls 400 can not only meet the overall floating requirements of the marine floating pipeline, but also save material costs to a certain extent, reduce the self-weight of the marine floating pipeline, and is more conducive to the installation and long-term operation of the marine floating pipeline.

[0051] In an alternative embodiment of the present invention, the sheath assembly 30 includes an inner sheath member and an outer sheath member. The inner sheath member wraps around the pipeline assembly 10, and the outer sheath member is sleeved outside the inner sheath member. The outer sheath member and the inner sheath member are spaced apart to define a floating cavity, in other words, to form a floating cavity.

[0052] It is understandable that the inner sheath member can be directly attached to the surface of the pipeline assembly 10 to provide initial protection to prevent the pipeline 100 from being damaged by chemical corrosion of seawater and minor physical collisions, etc.; the outer sheath member is equivalent to adding another layer of barrier, which can resist greater external impacts, such as impacts from marine organisms and collisions with larger floating objects. At the same time, the floating cavity formed by the spacing between the two can also play a certain buffering role on the basis of providing buoyancy. When the marine floating pipeline is subjected to external extrusion and collision, the floating cavity can absorb and disperse part of the energy through its own deformation, reducing the direct impact of the external force on the pipeline assembly 10 and improving the overall impact resistance and stability of the marine floating pipeline.

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

[0054] Refer to Figure 6 and Figure 7 In an alternative embodiment of the present invention, one end of the female joint 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 spaced and evenly spaced around the circumference of the first annular stepped groove 221.

[0055] The pipe 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 to the first connection hole 222 by a fastener. The second connection hole 223 is used for fastening connection with the male joint 230. During the connection process, the female joint 220 can be sleeved into the pipe 100 from the other end of the pipe 100 until the bottom wall of the first annular stepped groove 221 abuts against the first flange 110. Then, twist one of the female joint 220 and the pipe 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 joint 220 and the pipe 100.

[0056] It can be understood that the design of the first annular stepped groove 221 and the first flange 110 can increase the area of the connection between the female joint 220 and the pipe 100, making the stress at the connection between the two more uniform, and thus enhancing the strength of the connection between the female joint 220 and the pipe 100. Secondly, when the female joint 220 is connected to the pipe 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 between the female joint 220 and the pipe 100.

[0057] Refer to Figure 3 and Figure 5 In an alternative embodiment of the present invention, the end of the male joint 230 away from the pipe 100 is provided with a second annular stepped groove 231. The bottom wall of the second annular stepped groove 231 is provided with a plurality of fourth connection holes 232 and a fifth connection hole 233. 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.

[0058] The pipe 100 is provided with a second flange 130 that matches the second annular stepped groove 231. The second flange 130 is provided with a sixth connection hole 140 that is fastened to the first connection hole 222 by a fastener. The fifth connection hole 233 is used for fastening connection with the female joint 220. During the connection process, the male joint 230 can be sleeved into the pipe 100 from the other end of the pipe 100 until the bottom wall of the second annular stepped groove 231 abuts against the second flange 130. Then, twist one of the male joint 230 and the pipe 100 to align the fourth connection hole 232 and the sixth connection hole 140. Finally, insert a screw or bolt through the fourth connection hole 232 and the sixth connection hole 140 to achieve the fastening connection between the male joint 230 and the pipe 100.

[0059] 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 joint 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 joint 230 and the pipeline 100. Secondly, when the male joint 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 closely fitted, and a stable abutting structure can also be formed, effectively improving the sealing performance of the connection between the male joint 230 and the pipeline 100.

[0060] Continue to refer to Figures 2 to 4 In an alternative embodiment of the present invention, the sheath member 300 includes a male sheath 320 and a female sheath 330. The male sheath 320 is wrapped around the outside of the male joint 230 and the pipeline 100, and the female sheath 330 is wrapped around the outside of the female joint 220 and the pipeline 100. The bosses 310 are respectively provided on the inner walls of the male sheath 320 and the female sheath 330 along their respective lengths, and the bosses 310 are annular protrusions.

[0061] It can be understood that in a marine environment, the male joint 230 and the female joint 220 are easily affected by seawater erosion, attachment of marine organisms, and impact of external objects. In the marine floating pipeline provided by the embodiment of the present invention, the design of the male sheath 320 and the female sheath 330 can effectively protect the male joint 230 and the female joint 220 respectively, provide a strong protective layer for them, prevent them from being damaged during use, and extend the service life of the male joint 230 and the female joint 220.

[0062] Among them, the setting of the bosses 310 can engage with the annular card slots 210 of the connection assembly 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 around the outside of the male joint 230 and the female joint 220, the bosses 310 and the annular card slots 210 are closely engaged, and a sealed connection structure can be formed, effectively preventing seawater from seeping into the interior of the pipeline 100.

[0063] Figure 8 is a schematic structural diagram of the male sheath provided by the embodiment of the present invention.

[0064] Continue to refer to Figure 4 and Figure 8 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 fastener connection between the fifth connection hole 233 and the female joint 220.

[0065] 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 pass the fastener through the fifth connection hole 233 and the second connection hole 223 from the T-shaped groove 321 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.

[0066] 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 pass 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.

[0067] Continue to refer to Figure 2 and Figure 4 In an alternative embodiment of the present invention, the sheath component 300 further includes a protection sheath 340. The protection sheath 340 wraps around the pipeline 100 and is located between the male sheath 320 and the female sheath 330. The protection sheath 340 is used to protect the pipeline 100.

[0068] It can be understood that in a marine environment, the pipeline 100 not only has to withstand 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 floating pipeline provided by the embodiment of the present invention, the protection sheath 340 can further protect the pipeline 100, provide an additional layer of protection for the pipeline 100, reduce the damage to the pipeline 100 caused by these factors, and prevent the pipeline 100 from being damaged by the external environment during use.

[0069] Secondly, when the pipeline 100 is subjected to an external impact, the protection sheath 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 sheath 340 can also play a certain buffering role and reduce the damage to the pipeline 100 when it is subjected to an external impact.

[0070] In an alternative embodiment of the present invention, the sheath assembly 30 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 overall process extrudes PE materials such as polyurethane or rubber by vulcanization process. After the pipeline 100 is connected to the adjacent pipeline 100, rubber injection molding is performed at the connection. In this process, the material of the female sheath 330 is a flowing liquid, and the flowing liquid 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 in the female joint 220. At the same time, a mold or a buoyancy ball 400 for forming a floating cavity can be placed in this state. After the female sheath 330 is cooled and solidified, 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 in the female joint 220, and at the same time, the floating cavity can be directly limited.

[0071] Similarly, after the two ends of the pipeline 100 are fixedly connected to the female joint 220 and the male joint 230 respectively, the overall process extrudes PE materials such as polyurethane or rubber by vulcanization process. Before this process is formed, the material of the male sheath 320 is a flowing liquid. At the same time, a mold or a buoyancy ball 400 for forming a floating cavity can be placed in this state. The flowing liquid 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 in the male joint 230. After the male sheath 320 is cooled and solidified, 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 in the male joint 230, and at the same time, the floating cavity can be directly limited.

[0072] It can be understood that the rubber material has good elasticity and sealing performance, which can effectively protect the pipeline 100 and the connection assembly 200. Secondly, the elasticity of the rubber enables the sheath assembly 30 to tightly wrap around the pipeline 100 and the connection assembly 200, which can adapt to pipelines 100 of different sizes and shapes, and at the same time 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 assembly 30 has no seams, reducing potential leakage points and improving the overall sealing and stability of the marine floating pipeline.

[0073] The second aspect of the embodiment of the present invention provides a deep-sea oil and gas production ship. The deep-sea oil and gas production ship includes the marine floating pipeline described in any one of the foregoing. It can be understood that since the deep-sea oil and gas production ship provided by the present invention includes the marine floating pipeline described in any one of the foregoing, it also has the beneficial effects of the marine floating pipeline described in any one of the foregoing. For specific beneficial effects, please refer to the foregoing description, and will not be repeated here.

[0074] 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 skilled in the art can implement it; when the combination of technical solutions is contradictory 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.

[0075] 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 it; 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 recorded 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 floating pipeline, characterized in that, It includes a pipe component (10) and a sheath component (30). The pipe component (10) is hollow inside and is used for conveying a medium. The sheath component (30) is wrapped around the outside of the pipe component (10) and extends in the same direction as the pipe component (10). A hollow floating cavity is formed inside the sheath component (30), and the floating cavity is arranged along the length direction of the sheath component (30).

2. The marine floating pipeline according to claim 1, wherein The sheath component (30) includes a sheath part (300) and a plurality of buoyancy balls (400). The sheath part (300) is wrapped around the outside of the pipe component (10), and the plurality of buoyancy balls (400) are embedded in the sheath part (300). The buoyancy balls (400) are of a hollow structure for defining the floating cavity.

3. The marine floating pipeline according to claim 2, wherein The plurality of buoyancy balls (400) are evenly spaced along the circumferential direction of the sheath part (300).

4. The marine floating pipeline according to claim 2, characterized in that, It further includes a connection component (200). The pipe component (10) includes at least two pipes (100). The connection component (200) is provided at at least one end of the pipe (100). The connection component (200) has an annular clamping groove (210), and the connection component (200) is used for connecting the pipe (100) and the adjacent pipe (100). One end of the sheath part (300) is wrapped around the pipe (100), and the other end is wrapped around the connection component (200). A boss (310) is provided on the inner wall of the sheath part (300), and the boss (310) is used for engaging with the annular clamping groove (210).

5. The marine floating pipeline according to claim 4, characterized in that, 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 connection component (200). The number and position of the bosses (310) match the number and position of the annular clamping grooves (210).

6. The marine floating pipeline according to claim 5, wherein The connection component (200) includes a male joint (230) and a female joint (220). The male joint (230) is sleeved on one end of the pipe (100), and the female joint (220) is sleeved on the other end of the pipe (100). The annular clamping groove (210) is provided at the corresponding positions of the male joint (230) and the female joint (220). The male joint (230) and the female joint (220) are matched for connecting the pipe (100) and the adjacent pipe (100).

7. The marine floating pipeline according to claim 6, characterized in that, Along the direction away from the male joint (230), the arrangement density of the buoyancy balls (400) gradually decreases; and / or, along the direction away from the female joint (220), the arrangement density of the buoyancy balls (400) gradually decreases.

8. The marine floating pipeline according to claim 1, characterized in that, The sheath component (30) includes an inner sheath part and an outer sheath part. The inner sheath part is wrapped around the pipe component (10), and the outer sheath part is sleeved on the outside of the inner sheath part. The outer sheath part is spaced from the inner sheath part to define the floating cavity.

9. The marine floating pipeline according to any one of claims 1 to 8, characterized in that, The sheath component (30) is obtained by integral molding.

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

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