Pipeline protection device and seabed transmission equipment

Abstract

The utility model discloses a pipeline protection device and seabed transmission equipment, the pipeline protection device comprises a non-metal protection pipe and a carbon fiber structure, the non-metal protection pipe is sleeved on the periphery of a seabed transmission pipeline, the cross section of the non-metal protection pipe is arranged in an ellipse-like shape, and the outer contour of the non-metal pipeline is arranged in a streamline shape; the carbon fiber structure is sleeved with the non-metal protection pipe and connected to the periphery of the seabed transmission pipeline in a sleeving mode. Thus, by arranging the non-metal protection pipe, the seabed transmission pipeline can be effectively prevented from being corroded by seawater, harm caused by oil spilling is reduced, meanwhile, stable installation of the seabed transmission pipeline is facilitated, and by arranging the carbon fiber structure, the structural strength of the non-metal protection pipeline can be enhanced, the bearing capacity of the non-metal protection pipeline can be effectively enhanced, and safety of the seabed transmission pipeline is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of marine pipelines, and particularly relates to a pipeline protection device and a subsea transmission device. Background Technique

[0002] Subsea transmission pipelines are important infrastructure connecting different regions, used for transporting oil, natural gas and other liquid resources, and play a key role in the global energy supply chain. With the increasing global energy demand and the exhaustion of land resources, the construction of subsea transmission pipelines has become even more important. To reduce transportation costs, improve safety, and reduce environmental impact, it is necessary to minimize energy consumption while fully preventing internal and external corrosion caused by the transported medium and seawater.

[0003] The deep-sea environment is complex and diverse. Currently, most of the subsea transmission pipelines on the market are circular. Circular pipelines will be subject to greater drag and lift forces, making the pipelines at risk of fracture. Moreover, more turbulence is likely to occur around the circular pipelines, increasing the frictional resistance, and thus more energy is required to maintain stability. In addition, since seawater contains various components and dissolves various inorganic salts, with an average salinity of about 35, seawater becomes a natural strong electrolyte and is prone to metal corrosion reactions with the pipe materials. At the same time, the surface of the pipeline laid on the seabed bears a large pressure, and the long-term pressure will also affect the safety of the subsea transmission pipeline. Content of the Utility Model

[0004] The main object of the utility model is to propose a pipeline protection device and a subsea transmission device, aiming to solve the above problems.

[0005] To achieve the above object, a pipeline protection device proposed by the utility model includes:

[0006] A non-metallic protection pipe for sleeving on the outer periphery of the subsea transmission pipeline. The cross-section of the non-metallic protection pipe is arranged in a quasi-elliptical shape, and the outer contour of the non-metallic protection pipe is arranged in a streamline shape; and,

[0007] A carbon fiber structure is sleeved inside the non-metallic protection pipe and on the outer periphery of the subsea transmission pipeline.

[0008] Optionally, the outer peripheral wall and the inner peripheral wall of the carbon fiber structure are both arranged in a wavy shape, and the carbon fiber structure is arranged in a hollowed-out manner.

[0009] Optionally, the pipeline protection device further includes a first connection structure. The first connection structure includes a threaded groove and a threaded protrusion that are adapted for threaded connection. One of the threaded groove and the threaded protrusion is arranged on the inner peripheral wall of the carbon fiber structure, and the other is arranged on the outer peripheral wall of the subsea transmission pipeline, so that the carbon fiber structure and the subsea transmission pipeline are threadedly connected.

[0010] Optionally, the pipeline protection device further includes a second connection structure, which includes a connection recess and a connection protrusion that are adapted and snapped together. One of the connection recess and the connection protrusion is provided on the inner peripheral wall of the carbon fiber structure, and the other is provided on the outer peripheral wall of the submarine transmission pipeline, so that the carbon fiber structure and the submarine transmission pipeline are adapted and snapped together.

[0011] Optionally, the connection recess includes a first groove, a second groove, a third groove and a fourth groove. The first groove extends along the axial direction of the submarine transmission pipeline. The second groove extends along the circumferential direction of the submarine transmission pipeline from one end of the first groove. The third groove and the fourth groove are provided in the area surrounded by the second groove and the first groove, and the third groove and the fourth groove are arranged in sequence along the circumferential direction of the submarine transmission pipeline;

[0012] The connection protrusion includes a first protrusion, a second protrusion, a third protrusion and a fourth protrusion. The first protrusion extends along the axial direction of the submarine transmission pipeline and is correspondingly clamped in the first groove. The second protrusion extends along the circumferential direction of the submarine transmission pipeline from one end of the first protrusion and is correspondingly clamped in the second groove. The third protrusion and the fourth protrusion are provided in the area surrounded by the second protrusion and the first protrusion, and the third protrusion and the fourth protrusion are arranged in sequence along the circumferential direction of the submarine transmission pipeline and are correspondingly clamped in the third groove and the fourth groove.

[0013] Optionally, the cross-section of the first groove and the cross-section of the second groove are both rectangular, and the cross-section of the third groove and the cross-section of the third groove are respectively trapezoidal and are gradually expanded from the groove bottom to the groove opening;

[0014] The first protrusion is columnar, the bottom and the top of the second protrusion are both arc-shaped, the third protrusion is semi-elliptical, and the fourth protrusion is semi-elliptical.

[0015] Optionally, grooves are provided on one side wall of the third protrusion close to the fourth protrusion and one side wall of the fourth protrusion close to the third protrusion.

[0016] Optionally, the non-metallic protection pipe includes a flow-facing part and a flow-away part. The cross-sections of the flow-facing part and the flow-away part are respectively semi-elliptical, and the cross-sectional diameter of the flow-facing part is smaller than the cross-sectional diameter of the flow-away part.

[0017] The present utility model also provides a submarine transmission device, which includes:

[0018] A submarine transmission pipeline; and,

[0019] A pipeline protection device is sleeved on the outer periphery of the submarine transmission pipeline;

[0020] Among them, the pipeline protection device includes:

[0021] A non-metallic protection pipe is used to be sleeved on the outer periphery of the submarine transmission pipeline. The cross-section of the non-metallic protection pipe is arranged in a quasi-elliptical shape, and the outer contour of the non-metallic protection pipe is arranged in a streamline shape; and,

[0022] A carbon fiber structure is sleeved inside the non-metallic protection pipe and on the outer periphery of the submarine transmission pipeline.

[0023] In the technical solution of the present utility model, by sleeving a non-metallic protection pipe on the outer periphery of the submarine transmission pipeline, it can effectively prevent the submarine transmission pipeline from being corroded by seawater and reduce the harm caused by oil spills. At the same time, through the shape design of the non-metallic protection pipe, the pipeline resonance caused by drag force, lift force, etc. during the transmission of the submarine transmission pipeline can be reduced, which helps the stable installation of the submarine transmission pipeline and reduces the erosion and wear that may be caused when the surface of the non-metallic protection pipe contacts the surrounding environment; furthermore, compared with the circular setting, the non-metallic protection pipeline with a streamline setting has better anti-bending and anti-extrusion capabilities, which can greatly reduce the possibility of deformation, and the surface of the non-metallic protection pipeline is smooth and uniform, and the contact area and velocity distribution of the fluid outside the non-metallic protection pipeline are more stable, which helps to reduce the erosion effect generated on the surface of the non-metallic protection pipeline due to the fluid passing through, and extends the service life and maintenance cycle of the non-metallic protection pipeline. In addition, by setting the carbon fiber structure, the structural strength of the non-metallic protection pipeline can be enhanced, effectively enhancing its bearing capacity and ensuring the safety of the submarine transmission pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0025] Figure 1 It is a schematic structural diagram of an embodiment of the submarine transmission equipment provided by the present utility model;

[0026] Figure 2 For Figure 1 Partial structural schematic diagram of the submarine transmission equipment in

[0027] Figure 3 For Figure 1Partial structural schematic diagram of the submarine transmission device;

[0028] Figure 4 For Figure 3 Enlarged schematic diagram of A in

[0029] Explanation of the reference numerals in the drawings:

[0030] Label Name Label Name 1000 Submarine transmission equipment 42 Third groove 100 Pipeline protection device 43 Fourth groove 1 Non-metallic protection pipe 5 Connecting convex part 11 Flow-facing part 51 First protrusion 12 Flow-away part 52 Second protrusion 2 Carbon fiber structure 53 Third protrusion 3 Threaded protrusion 54 Fourth protrusion 4 Connecting concave part 200 Submarine transmission pipeline 41 First groove

[0031] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0033] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0034] In addition, if there are descriptions such as "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. 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 and is not within the scope of protection required by the present utility model.

[0035] Submarine transmission pipelines are important infrastructures connecting different regions, used for transporting oil, natural gas, and other liquid resources, and play a crucial role in the global energy supply chain. With the increasing global energy demand and the depletion of land resources, the construction of submarine transmission pipelines has become even more important. To reduce transportation costs, improve safety, and minimize environmental impact, it is necessary to minimize energy consumption while fully preventing internal and external corrosion caused by the transported medium and seawater.

[0036] The deep-sea environment is complex and diverse. Currently, most of the submarine transmission pipelines on the market are circular. Circular pipelines are subject to greater drag and lift forces, posing a risk of pipeline fracture. Moreover, more turbulence is likely to occur around circular pipelines, increasing frictional resistance and thus requiring more energy to maintain stability. Additionally, since seawater contains various components and dissolves various inorganic salts, with an average salinity of about 35, seawater becomes a natural strong electrolyte and is prone to metal corrosion reactions with pipe materials. At the same time, the surface of the pipeline laid on the seabed bears a large pressure, and the long-term pressure will also affect the safety of submarine transmission pipelines.

[0037] In view of this, the present utility model provides a pipeline protection device 100 and a submarine transmission device 1000. Please refer to Figures 1 to 4 , the submarine transmission device 1000 includes a submarine transmission pipeline 200, and the pipeline protection device 100 is sleeved on the outer periphery of the submarine transmission pipeline 200. The main inventive point of the present utility model lies in the pipeline protection device 100. The following mainly describes the pipeline protection device 100 in combination with specific drawings.

[0038] Please refer to Figures 1 to 4 , the pipeline protection device 100 includes a non-metallic protection pipe 1 and a carbon fiber structure 2. The non-metallic protection pipe 1 is used to be sleeved on the outer periphery of the submarine transmission pipeline 200. The cross-section of the non-metallic pipe is arranged in a quasi-elliptical shape, and the outer contour of the non-metallic protection pipe 1 is arranged in a streamline shape; the carbon fiber structure 2 is sleeved inside the non-metallic protection pipe 1 and is also sleeved on the outer periphery of the submarine transmission pipeline 200.

[0039] In the technical solution of the present utility model, by sleeving a non-metallic protection pipe 1 around the outer periphery of the submarine transmission pipeline 200, it can effectively prevent the submarine transmission pipeline 200 from being corroded by seawater and reduce the harm caused by oil spills. At the same time, through the shape design of the non-metallic protection pipe 1, the pipeline resonance caused by drag force, lift force, etc. during the transmission of the submarine transmission pipeline 200 can be reduced, which helps the stable installation of the submarine transmission pipeline 200 and reduces the erosion and wear that may occur when the surface of the non-metallic protection pipe 1 contacts the surrounding environment; furthermore, compared with the circular setting, the non-metallic protection pipe 1 with a streamlined shape has better anti-bending and anti-extrusion capabilities, which can greatly reduce the possibility of deformation, and the surface of the non-metallic protection pipe 1 is smooth and uniform, and the contact area and velocity distribution of the fluid outside the non-metallic protection pipe 1 are more stable, which helps to reduce the erosion effect generated on the surface of the non-metallic protection pipe 1 due to the fluid passing through, and extends the service life and maintenance cycle of the non-metallic protection pipe 1. In addition, by setting the carbon fiber structure 2, the structural strength of the non-metallic protection pipe 1 can be enhanced, effectively enhancing its bearing capacity and ensuring the safety of the submarine transmission pipeline 200.

[0040] It should be noted that the outer contour of the non-metallic protection pipe 1 is set in a streamlined shape, and the cross-section of the non-metallic protection pipe 1 is set in a quasi-elliptical shape, that is, the non-metallic protection pipe 1 is composed of two semi-ellipses with different sizes on the outer contour of the cross-section, without obvious undulations and edges and corners, and is symmetric up and down. Compared with the traditional circular cross-section pipeline with the same outer diameter, it can effectively reduce vibration and noise during operation and increase stability and reliability.

[0041] More specifically, please refer to Figure 1 , the non-metallic protection pipe 1 includes a flow-facing part 11 and a flow-away part. The cross-sections of the flow-facing part 11 and the flow-away part are respectively in a semi-elliptical shape, and the cross-sectional diameter of the flow-facing part 11 is smaller than the cross-sectional diameter of the flow-away part. In this way, the pressure generated by seawater on the non-metallic protection pipe 1 and the submarine transmission pipeline 200 can be reduced.

[0042] It should also be noted that according to different raw materials to be transmitted, the submarine transmission pipeline 200 is prepared from different materials, such as metal materials and plastic materials, etc.; the non-metallic protection pipe 1 is prepared from non-metallic materials, such as materials with high anti-corrosion performance such as epoxy resin, polyester, and polyurethane.

[0043] Furthermore, please refer to Figure 1 and Figure 3, the outer peripheral wall and the inner peripheral wall of the carbon fiber structure 2 are both wavy, and the carbon fiber structure 2 is provided with a hollow. In this way, the structural strength of the non-metal protection pipe 1 can be further enhanced, and its bearing capacity can be enhanced to ensure the safety of the submarine transmission pipeline 200.

[0044] Specifically, please refer to Figure 2 , the pipeline protection device 100 further includes a first connection structure. The first connection structure includes a thread groove and a thread projection 3 that are threadedly connected in a matching manner. One of the thread groove and the thread projection 3 is provided on the inner peripheral wall of the carbon fiber structure 2, and the other is provided on the outer peripheral wall of the submarine transmission pipeline 200, so that the carbon fiber structure 2 and the submarine transmission pipeline 200 are threadedly connected. In this way, a stable and tight connection between the carbon fiber structure 2 and the submarine transmission pipeline 200 is achieved. During installation, the submarine transmission pipeline 200 or the non-metal protection pipe 1 can be rotated to sleeved the submarine transmission pipe within the carbon fiber structure 2, and the operation is simple and convenient.

[0045] More specifically, in an embodiment of the present invention, the thread groove is provided on the inner peripheral wall of the carbon fiber structure 2, and the thread projection 3 is provided on the outer peripheral wall of the submarine transmission pipeline 200.

[0046] Specifically, please refer to Figures 1 to 4 , the pipeline protection device 100 further includes a second connection structure. The second connection structure includes a connection recess 4 and a connection protrusion 5 that are snap-fitted. One of the connection recess 4 and the connection protrusion 5 is provided on the inner peripheral wall of the carbon fiber structure 2, and the other is provided on the outer peripheral wall of the submarine transmission pipeline 200, so that the carbon fiber structure 2 and the submarine transmission pipeline 200 are snap-fitted.

[0047] More specifically, please refer to Figure 2 and Figure 4 , in an embodiment of the present invention, the connection recess 4 is provided on the inner peripheral wall of the carbon fiber, and the connection protrusion 5 is provided on the outer peripheral wall of the submarine transmission pipeline 200.

[0048] Further, please refer to Figure 2 , based on the above-mentioned embodiment of "the thread groove is provided on the inner peripheral wall of the carbon fiber structure 2, and the thread projection 3 is provided on the outer peripheral wall of the submarine transmission pipeline 200", the connection recess 4 is provided at the end of the thread groove, and the connection protrusion 5 is provided at the end of the thread projection 3.

[0049] Further, please refer to Figure 4, the connecting concave part 4 includes a first groove 41, a second groove, a third groove 42 and a fourth groove 43. The first groove 41 is arranged along the axial direction of the subsea transmission pipeline 200. The second groove extends along the circumferential direction of the subsea transmission pipeline 200 from one end of the first groove 41. The third groove 42 and the fourth groove 43 are arranged in the area surrounded by the second groove and the first groove 41, and the third groove 42 and the fourth groove 43 are arranged in sequence along the circumferential direction of the subsea transmission pipeline 200. The connecting convex part 5 includes a first protrusion 51, a second protrusion 52, a third protrusion 53 and a fourth protrusion 54. The first protrusion 51 is arranged along the axial direction of the subsea transmission pipeline 200 to be correspondingly clamped in the first groove 41. The second protrusion 52 extends along the circumferential direction of the subsea transmission pipeline 200 from one end of the first protrusion 51 to be correspondingly clamped in the second groove. The third protrusion 53 and the fourth protrusion 54 are arranged in the area surrounded by the second protrusion 52 and the first protrusion 51, and the third protrusion 53 and the fourth protrusion 54 are arranged in sequence along the circumferential direction of the subsea transmission pipeline 200 to be correspondingly clamped in the third groove 42 and the fourth groove 43. In this way, the carbon fiber structure 2 is adaptively clamped with the subsea transmission pipeline 200 to realize the positioning and fixing of the subsea transmission pipeline 200, and prevent rotation and dislocation during use, which affects the pipeline performance.

[0050] Further, the cross-sections of the first groove 41 and the second groove are both rectangular, and the cross-sections of the third groove 42 and the third groove 42 are respectively trapezoidal and are arranged to gradually expand from the groove bottom to the groove opening. The first protrusion 51 is columnar, the bottom and the top of the second protrusion 52 are both arc-shaped, the third protrusion 53 is semi-elliptical, and the fourth protrusion 54 is semi-elliptical.

[0051] Further, please refer to Figure 4 , grooves are provided on one side wall of the third protrusion 53 close to the fourth protrusion 54 and one side wall of the fourth protrusion 54 close to the third protrusion 53. In this way, the contact area between the third protrusion 53 and the third groove 42 and the contact area between the fourth protrusion 54 and the fourth groove 43 are increased, and the connection strength between the carbon fiber structure 2 and the subsea transmission pipeline 200 is improved.

[0052] Further, the grooves provided on one side wall of the third protrusion 53 close to the fourth protrusion 54 and one side wall of the fourth protrusion 54 close to the third protrusion 53 are irregular, and their inner walls are arc-shaped.

[0053] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the inventive concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields shall be included within the patent protection scope of the present utility model.

Claims

1. A pipeline protection device, characterized in that, The pipeline protection device includes: a non-metallic protection pipe for sleeving on the outer periphery of the submarine transmission pipeline, the cross-section of the non-metallic protection pipe is arranged in a quasi-elliptical shape, and the outer contour of the non-metallic protection pipe is arranged in a streamline shape; and, a carbon fiber structure sleeved inside the non-metallic protection pipe and on the outer periphery of the submarine transmission pipeline.

2. The pipeline protection device according to claim 1, characterized in that, The outer peripheral wall and the inner peripheral wall of the carbon fiber structure are both arranged in a wavy shape, and the carbon fiber structure is arranged in a hollowed-out manner.

3. The pipeline protection device according to claim 1, characterized in that, The pipeline protection device further includes a first connection structure, the first connection structure includes a thread groove and a thread protrusion that are threadedly connected in a matching manner, one of the thread groove and the thread protrusion is arranged on the inner peripheral wall of the carbon fiber structure, and the other is arranged on the outer peripheral wall of the submarine transmission pipeline, so that the carbon fiber structure and the submarine transmission pipeline are threadedly connected.

4. The pipeline protection device according to claim 1 or 3, characterized in that, The pipeline protection device further includes a second connection structure, the second connection structure includes a connection recess and a connection protrusion that are snap-fitted, one of the connection recess and the connection protrusion is arranged on the inner peripheral wall of the carbon fiber structure, and the other is arranged on the outer peripheral wall of the submarine transmission pipeline, so that the carbon fiber structure and the submarine transmission pipeline are snap-fitted.

5. The pipeline protection device according to claim 4, characterized in that, The connection recess includes a first groove, a second groove, a third groove and a fourth groove, the first groove extends along the axial direction of the submarine transmission pipeline, the second groove extends along the circumferential direction of the submarine transmission pipeline from one end of the first groove, and the third groove and the fourth groove are arranged in the area surrounded by the second groove and the first groove, and the third groove and the fourth groove are arranged in sequence along the circumferential direction of the submarine transmission pipeline; The connection protrusion includes a first protrusion, a second protrusion, a third protrusion and a fourth protrusion, the first protrusion extends along the axial direction of the submarine transmission pipeline to be correspondingly clamped in the first groove, the second protrusion extends along the circumferential direction of the submarine transmission pipeline from one end of the first protrusion to be correspondingly clamped in the second groove, and the third protrusion and the fourth protrusion are arranged in the area surrounded by the second protrusion and the first protrusion, and the third protrusion and the fourth protrusion are arranged in sequence along the circumferential direction of the submarine transmission pipeline to be correspondingly clamped in the third groove and the fourth groove.

6. The pipeline protection device according to claim 5, characterized in that, The cross-section of the first groove and the cross-section of the second groove are both arranged in a rectangular shape, the cross-section of the third groove and the cross-section of the third groove are respectively arranged in a trapezoidal shape, and are arranged in a gradually expanding manner from the groove bottom to the groove opening; The first protrusion is arranged in a columnar shape, the bottom and the top of the second protrusion are both arranged in an arc shape, the third protrusion is arranged in a semi-elliptical shape, and the fourth protrusion is arranged in a semi-elliptical shape.

7. The pipeline protection device according to claim 6, wherein, A groove is provided on one side wall of the third protrusion close to the fourth protrusion and on one side wall of the fourth protrusion close to the third protrusion.

8. The pipeline protection device according to claim 1, characterized in that, The non-metallic protection pipe includes a flow-facing part and a flow-away part, the cross-section of the flow-facing part and the cross-section of the flow-away part are respectively arranged in a semi-elliptical shape, and the cross-section diameter of the flow-facing part is smaller than the cross-section diameter of the flow-away part.

9. An undersea transmission device, characterized in that, The submarine transmission device includes: a submarine transmission pipeline; and, The pipeline protection device according to any one of claims 1 to 8 is sleeved on the outer periphery of the submarine transmission pipeline.

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