Underwater suspended transport pipeline and method of construction

Abstract

The application provides an underwater suspended transportation pipeline and a construction method, wherein the underwater suspended transportation pipeline comprises a conveying pipe, an anti-impact device, a plurality of node cabins, a plurality of floating islands, a water flow velocity and direction detection device and a control device, the anti-impact device is arranged on the conveying pipe, the plurality of node cabins are arranged on the conveying pipe, and a power mechanism is arranged on the node cabin; the plurality of floating islands are arranged to float on the sea surface, the floating island is connected with the corresponding node cabin, and the power mechanism is also arranged on the floating island; the water flow velocity and direction detection device is connected with the control device, the power mechanism is connected with the control device, the control device can receive detection information, and the power mechanism provides power opposite to the water flow direction according to the detection information. The anti-impact device is arranged, which can reduce the impact force of the water flow on the conveying pipe and also reduce the corrosion of seawater on the conveying pipe. In addition, the floating island and the node cabin are arranged, which can facilitate the suspended arrangement of the conveying pipeline under the water surface and improve the navigability of the water area.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of conveying pipelines, and more particularly relates to an underwater suspended conveying pipeline, and further relates to a construction method of the underwater suspended conveying pipeline. BACKGROUND

[0002] There are many islands in the sea which are close to the land but not suitable for bridge construction. The islands are often inhabited by many people. However, the residents on the islands not only have difficulty in personnel exchanges, but also need ships to transport water, energy, networks and other life necessities or specially laid cables to transport the necessary materials and energy. The cable laying not only needs to select a suitable terrain, but also is extremely time-consuming and laborious to construct. Once the cable fails in the seabed, it is extremely difficult to repair.

[0003] Therefore, more and more places begin to use water floating buoys for transportation. The water floating buoy is composed of multiple sub-buoys, the inside of the buoy is hollow, and the buoy is tubular and floats on the water surface. Pipes, cables and the like can be provided in the buoy, which greatly reduces the construction difficulty. However, in the prior art, the buoy generally floats on the water surface, causing the water area where the buoy is laid to be unable to pass ships again; in addition, the existing buoy only has a simple floating function, and when facing the impact of water flow, stress will be generated on the internal pipe or cable, which can easily cause aging of the internal pipe or cable over time.

[0004] The prior art provides a water flow velocity and direction detection device. The device includes a floating ball, a power supply device, a detection cable, multiple detection balls and a control device. The floating ball floats on the water surface, and the power supply device is arranged on the floating ball. The detection cable is connected with the power supply device and extends out below the floating ball through the bottom end of the floating ball. The detection balls are arranged on the detection cable, and a stress detection device is arranged on the detection cable. The stress detection device can detect the stress of the detection cable. Multiple wires are arranged on the detection balls, and signal emitting devices are arranged on the wires. Under the action of the water flow, a loop is formed. The control device is arranged in the floating ball, and is connected with the stress detection device and the signal emitting device. The loop is formed by the detection cable and the wires. The control device receives the signals of the signal emitting devices to determine the flow direction of the water flow. Two stress sensors are arranged in the detection ball. The reading difference between the two stress sensors is the stress received by the detection ball. The weight of the detection ball is known. The transverse stress of the detection ball can be calculated according to the trigonometric function. The control device is preset with corresponding values of the transverse stress and the water flow velocity, so that the water flow velocity can be determined. SUMMARY

[0005] The present application aims to provide an underwater suspended conveying pipeline to solve the problems that the buoy in the prior art reduces the navigability of the water area and the existing buoy easily causes aging of the internal pipe or cable.

[0006] To achieve the above object, the technical scheme adopted by the present application is: provide a kind of underwater suspended transport pipeline, including delivery pipe, anti-impact device, multiple node cabin, multiple floating island, water flow direction detection device and control device, wherein, anti-impact device is located on the delivery pipe, to reduce the impact force of water flow to the delivery pipe;Multiple node cabin is located on the delivery pipe, and power mechanism is arranged on the node cabin;Multiple floating island is floatingly arranged on the sea surface, the floating island is one-to-one corresponding with the node cabin, the floating island is connected with the corresponding node cabin, and power mechanism is also arranged on the floating island;Water flow direction detection device is used to detect the flow direction and flow rate of seawater;The water flow direction detection device is connected with the control device, the power mechanism is connected with the control device, the control device can receive the detection information of the water flow direction detection device, and the power mechanism is controlled according to the detection information to provide power opposite to the direction of water flow, and the power is the same as the impact force of seawater to node cabin.

[0007] In a possible implementation manner, the anti-impact device includes an anti-impact shell arranged around the delivery pipe and an anti-impact assembly arranged circumferentially on the anti-impact shell, the anti-impact assembly includes a plurality of air chambers, the air chambers are provided with air inlet valves and air outlet valves, the air inlet valves are connected with an air charging assembly, the air charging assembly is arranged in the node cabin, the air outlet valves are connected with an air discharging assembly, the air discharging assembly is arranged in the node cabin, and the air charging assembly and the air discharging assembly are connected with the control device, and the control device can control the opening and closing of the air charging assembly and the air discharging assembly.

[0008] In a possible implementation manner, the anti-impact device includes an anti-impact shell arranged around the delivery pipe and a plurality of air chambers arranged circumferentially on the anti-impact shell, the anti-impact device has a shuttle-shaped cross section, the anti-impact device is connected with a driving assembly, the driving assembly is connected with the control device, the control device can control the opening and closing of the driving assembly and drive the anti-impact device to rotate so that the tip of the anti-impact device faces the water flow.

[0009] In a possible implementation manner, the floating island is provided with a sliding support, the sliding support is connected with the node cabin, the sliding support includes a via arranged on the floating island, a first sliding assembly is arranged at the top of the via, the first sliding assembly can slide left and right in the horizontal direction, a second sliding assembly is arranged on the first sliding assembly, the second sliding assembly can slide forward and backward in the horizontal direction, and the second sliding assembly is connected with the node cabin.

[0010] In a possible implementation, a damper is arranged between the first sliding assembly and the sidewall of the through hole, a damper is arranged between the second sliding assembly and the sidewall of the through hole, a position sensor is arranged on the damper, the position sensor is connected with the control device, the control device can receive the signal of the position sensor and control the power mechanism to work, drive the floating island to move in the opposite direction, and make the floating island return to the original position.

[0011] In a possible implementation, a constant force spring support hanger is arranged on the second sliding assembly, and the node cabin is arranged on the constant force spring support hanger, so that the pulling force of the floating island on the node cabin is kept constant.

[0012] In a possible implementation, a support platform is arranged in the node cabin, a support block is arranged on the top of the support platform, the conveying pipe is arranged on the support block, the support platform is arranged in a sliding mode, and a second displacement sensor is arranged between the two ends of the support platform and the inner wall of the node cabin, the second displacement sensor is connected with the control device, and the control device can receive the signal of the second displacement sensor and control the power mechanism to provide a reverse thrust, so that the node cabin returns to the original position.

[0013] The underwater suspended transportation pipeline provided by the application has the following beneficial effects: compared with the prior art, the impact force of water flow on the conveying pipe can be reduced, and the corrosion of seawater on the conveying pipe can also be reduced by arranging the anti-impact device; in addition, the conveying pipeline can be suspended under the water surface by arranging the floating island and the node cabin, and only the floating island provides buoyancy on the water surface, so that ships can pass through between the floating islands, and the navigability of the water area is improved compared with the buoy structure in the prior art; in addition, the flow direction and flow rate of seawater are detected by arranging the water flow speed and direction detection device, and the power mechanism and the control device arranged on the floating island and the node cabin are matched, so that the conveying pipe can be provided with a thrust in the opposite direction of the water flow, and the conveying pipe can be kept stationary, thereby effectively preventing the aging of the conveying pipe.

[0014] The application further provides a construction method of an underwater suspended transportation pipeline, which is used for constructing the underwater suspended transportation pipeline as described above, and comprises the following steps:

[0015] S1, selecting an entry point into the sea, delineating a construction site, and arranging two sealing doors in the site;

[0016] S2, selecting an exit point from the sea, delineating a construction site, and arranging two sealing doors in the site;

[0017] S3, connecting the underwater suspended transportation pipeline at two ends between the entry point into the sea and the exit point from the sea.

[0018] In a possible implementation, in step S1, the length of no less than two sections of the conveying pipe and three node cabins in the construction site is extracted first, and then the foundation is reinforced, the ground of the construction site is lower than the preset height of the conveying pipeline, and the parking area between the two sealing doors is used to test the operation and sealing effect of the finished power floating island.

[0019] In a possible implementation, in step S2, the length of no less than two sections of the conveying pipe and three node cabins in the construction site is extracted first, and then the foundation is reinforced, the ground of the construction site is lower than the preset height of the conveying pipeline, and the parking area between the two sealing doors is used to test the operation and sealing effect of the finished power floating island, and the docking of the floating island end pipeline and the land-based pipeline.

[0020] The underwater suspended conveying pipeline construction method provided by the present application has the beneficial effect that, compared with the prior art, the present application can facilitate the construction of the underwater suspended conveying pipeline by selecting a better sea outlet and a sea inlet, and setting appropriate construction sites at the sea outlet and the sea inlet. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0022] Figure 1 The structural schematic diagram of the underwater suspended conveying pipeline provided by the first embodiment of the present application is shown in the figure.

[0023] Figure 2 The structural schematic diagram of the floating island provided by the first embodiment of the present application is shown in the figure.

[0024] Figure 3 The top view of the floating island provided by the first embodiment of the present application is shown in the figure.

[0025] Figure 4 The structural schematic diagram of the node cabin provided by the first embodiment of the present application is shown in the figure.

[0026] Figure 5 The structural schematic diagram of the flow breaker provided by the first embodiment of the present application is shown in the figure.

[0027] Figure 6 The structural schematic diagram of the first inflation chamber provided by the first embodiment of the present application is shown in the figure.

[0028] Figure 7 The structural schematic diagram of the inflation assembly provided by the first embodiment of the present application is shown in the figure.

[0029] Figure 8 The second air chamber structure schematic diagram provided for the embodiment one of the present application;

[0030] Figure 9 The overhead structure schematic diagram of the condensate support of the subway track dryer provided for the embodiment two of the present application;

[0031] Figure 10 The structure schematic diagram of the pipeline construction provided for the embodiment two of the present application;

[0032] Figure 11 The structure schematic diagram of the pipeline construction provided for the embodiment two of the present application;

[0033] Figure 12 The structure schematic diagram of the offshore end construction provided for the embodiment two of the present application;

[0034] Figure 13 The structure schematic diagram of the land-based section construction provided for the embodiment two of the present application;

[0035] In the drawings, the various reference signs are as follows:

[0036] 1, floating island; 2, transportation pipeline; 3, water flow direction detection device; 4, impact protection shell; 5, conveying pipe; 6, node cabin; 7, support assembly; 8, constant force spring support hanger; 9, driving assembly; 10, sliding support; 11, buoyancy cabin; 12, power mechanism; 25, first sliding assembly; 26, second sliding assembly; 27, suspension cable; 28, impact protection device; 29, second displacement sensor; 30, transverse slider; 31, support block; 32, support platform; 35, land; 36, ocean; 37, No. 1 sealing door; 38, No. 2 sealing door; 39, No. 3 sealing door; 40, moving trolley; 41, tugboat; 42, support rod; 43, concrete protective layer; 44, land-based pipeline; 46, air pipe; 47, air inlet valve; 48, first air chamber; 49, second air chamber; 50, damper. DETAILED DESCRIPTION

[0037] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0038] It needs to be further explained that the drawings and embodiments of the present application mainly describe and illustrate the concept of the present application, and on the basis of the concept, the specific forms and settings of some connection relationships, position relationships, power mechanisms, power supply systems, hydraulic systems and control systems, etc. may not be completely described, but under the premise that the person skilled in the art understands the concept of the present application, the person skilled in the art can realize the above-mentioned specific forms and settings in a well-known manner.

[0039] When an element is referred to as being "fixed" or "set" on another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or indirectly connected to the other element.

[0040] The terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0041] The terms "first", "second", are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, and the meaning of "several" is one or more, unless otherwise explicitly and specifically limited.

[0042] Embodiment one

[0043] Now the underwater suspended transport pipeline provided by the present application will be described.

[0044] Please refer to Figure 1 and Figure 2The underwater suspended transportation pipeline comprises a conveying pipe 5, an anti-impact device 28, a plurality of node cabins 6, a plurality of floating islands 1, a water flow velocity and direction detection device 3 and a control device, wherein the anti-impact device 28 is arranged on the conveying pipe 5 to form a transportation pipeline 2, so as to reduce the impact force of water flow on the conveying pipe 5; the plurality of node cabins 6 are arranged on the conveying pipe 5, and a power mechanism 12 is arranged on the node cabin 6; the plurality of floating islands 1 are arranged to float on the sea surface, the floating island 1 corresponds to the node cabin 6, the floating island 1 is connected to the corresponding node cabin 6, and the power mechanism 12 is also arranged on the floating island; the water flow velocity and direction detection device 3 is used for detecting the flow direction and flow velocity of seawater; the water flow velocity and direction detection device 3 is connected to the control device, the power mechanism 12 is connected to the control device, the control device can receive the detection information of the water flow velocity and direction detection device 3, and control the power mechanism 12 to provide power opposite to the water flow direction according to the detection information, and the power is the same as the impact force of seawater on the node cabin 6.

[0045] The underwater suspended transportation pipeline has the beneficial effects that, compared with the prior art, the underwater suspended transportation pipeline provided by the embodiment can reduce the impact force of water flow on the conveying pipe 5 and the corrosion of seawater on the conveying pipe 5 by arranging the anti-impact device 28, in addition, the conveying pipe 5 can be suspended under the water surface by arranging the floating island 1 and the node cabin 6, only the floating island 1 provides buoyancy on the water surface, so that the ship can pass through between the floating islands 1, and the navigability of the water area is improved compared with the buoy structure in the prior art; in addition, the water flow velocity and direction detection device 3 is arranged to detect the flow direction and flow velocity of seawater, and the power mechanism 12 arranged on the floating island 1 and the node cabin 6 and the control device are arranged to provide thrust opposite to the water flow direction for the conveying pipe 5, so that the conveying pipe 5 can remain stationary, and the conveying pipe 5 is effectively prevented from being broken due to excessive stress.

[0046] Based on the above design idea, the anti-impact device 28 in the embodiment comprises an anti-impact shell 4 arranged around the conveying pipe 5 and an anti-impact assembly arranged circumferentially on the anti-impact shell 4, the anti-impact assembly comprises a plurality of first air chambers 48, the first air chamber 48 is provided with an air inlet valve 47 and an air outlet valve, a charging assembly is arranged in connection with the air inlet valve 47, and the charging assembly is arranged in the node cabin 6; an air discharging assembly is arranged in connection with the air outlet valve, and the air discharging assembly is arranged in the node cabin 6, the charging assembly and the air discharging assembly are connected to the control device, and the control device can control the opening and closing of the charging assembly and the air discharging assembly.

[0047] In the embodiment, the combination of Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, the air inlet valve 47 is connected with the air inlet pump through the air pipe 46, and the air outlet valve is connected with the air outlet pump through the air pipe 46. The air inlet pump and the air outlet pump are arranged in the node cabin 6 at the two ends of the anti-impact shell 4. The control device can control the air inlet pump to inhale air or control the air outlet pump to exhaust air according to the water flow direction, so as to adjust the air pressure of each first air chamber 48, so that the first air chamber 48 facing the water flow direction forms a shuttle-shaped breaker, and plays a role of breaking the flow. At the same time, the arrangement of the plurality of first air chambers 48 can also prevent one or more first air chambers 48 from being damaged, so as to prevent the overall buoyancy from suddenly decreasing and endangering the pipeline.

[0048] In addition, the anti-impact device 28 can also include an anti-impact shell 4 in which the ring conveying pipe 5 is arranged, and an anti-impact assembly arranged circumferentially on the anti-impact shell 4. The anti-impact assembly includes a plurality of fixed second air chambers 49, so that the shape of the anti-impact device 28 is shuttle-shaped. The anti-impact device 28 is connected with the driving assembly 9, and the driving assembly 9 is connected with the control device. The control device can control the driving assembly 9 to open and close, and drive the anti-impact device 28 to rotate, so that the tip of the anti-impact device 28 faces the water flow, and plays a role of breaking the flow. Similarly, the arrangement of the plurality of second air chambers 49 can also prevent one or more second air chambers 49 from being damaged, so as to prevent the overall buoyancy from suddenly decreasing and endangering the pipeline.

[0049] As shown in Figure 2 , Figure 3 and Figure 4 , the floating island 1 is provided with a solar cell panel and a storage battery. The solar cell panel and the storage battery are connected, so that the electric energy generated by the solar cell panel can be stored in the storage battery, and provide energy for other devices needing electricity. The floating island 1 is provided with a buoyancy cabin 11, and the power mechanism 12 includes a plurality of first propellers. The first propellers are installed on the buoyancy cabin 11, and each first propeller is connected with the control device. The control device can control the first propeller to provide appropriate reverse thrust for the floating island 1 according to the information detected by the water flow direction detection device 3, so as to prevent the floating island 1 from being pushed by the water flow and causing adverse effects on the pipeline.

[0050] The floating island 1 is provided with a sliding support 10, and the sliding support 10 is connected with the node cabin 6. The sliding support 10 includes a through hole arranged on the floating island 1. The top of the through hole is provided with a first sliding assembly 25 which can slide left and right in the horizontal direction. The first sliding assembly 25 is provided with a second sliding assembly 26 which can slide forward and backward in the horizontal direction. The second sliding assembly 26 is connected with the node cabin 6.

[0051] As a preferred embodiment, a damper 50 is provided between the first sliding component 25 and the side wall of the through hole, and a damper 50 is provided between the second sliding component 26 and the side wall of the through hole. A position sensor is provided on the damper 50. The position sensor is connected to the control device. The control device can receive the signal from the position sensor and control the power mechanism 12 to work, driving the floating island 1 to move in the opposite direction, so that the floating island 1 returns to the origin.

[0052] It is worth noting that the second sliding component 26 is provided with a constant force spring support 8, and the node cabin 6 is mounted on the constant force spring support 8 via a suspension cable 27, so that the tension of the floating island 1 on the node cabin 6 remains constant.

[0053] like Figure 2 As shown, a support assembly 7 is provided inside the node compartment 6. The support assembly 7 includes a support platform 32 and a support block 31 located on top of the support platform 32. The conveying pipe 5 is located on the support block 31 and is connected to the support platform 32 by a transverse slider 30, allowing the support platform 32 to slide. This allows the support platform 32 to have a small relative displacement before the power mechanism 12 provides a suitable reaction force, preventing the conveying pipe 5 from being subjected to excessive external force due to force transmission. Second displacement sensors 29 are provided between the two ends of the support platform 32 and the inner wall of the node compartment 6. The second displacement sensors 29 are connected to a control device, which can receive the signals from the second displacement sensors 29 and control the power mechanism 12 to provide a reverse thrust, so that the node compartment 6 returns to its original position.

[0054] Finally, the power mechanism 12 on the node 6 includes multiple second propellers, each connected to a control device. The control device can control the propellers to provide appropriate reverse thrust to the node 6 based on the water flow velocity and direction. In this embodiment, the node 6 is used in conjunction with the floating island 1. In areas with suitable geological conditions, cables can be used to anchor the seabed, allowing the node 6 to float stably in the water under the combined action of the floating island 1 and the cables.

[0055] Example 2

[0056] The present invention also provides a method for constructing an underwater suspended transport pipeline, used to construct an underwater suspended transport pipeline as described in Example 1, comprising:

[0057] S1. Select the point of entry into the sea, demarcate the construction site, and set up two sealed gates within the site;

[0058] S2. Select a sea outlet, demarcate the construction site, and set up two sealed doors within the site;

[0059] S3. Connect the underwater suspended transport pipeline between the inlet point and the outlet point.

[0060] In step S1, the construction site is delimited by cofferdam or the like on the coast, the distance between the land 35 in the construction site and the sealing door to be mentioned below is not less than the length of two sections of the conveying pipe 5 and three node cabins 6, after the seawater in the construction site is pumped out during construction, the site needs to be piled and reinforced in other ways to reinforce the foundation, and the ground of the construction site needs to be low enough to ensure that the node cabin is always at the designed altitude before and after the water is put in. Two sealing doors are arranged in the site, and the parking area between the two sealing doors is used for testing the operation and sealing effect of the finished power floating island 1, and the outside of the outer sealing door is the sea 36, which isolates the external seawater.

[0061] In step S2, the construction site is delimited by cofferdam or the like on the coast, the distance between the construction site and the sealing door to be mentioned below is not less than the length of two sections of the conveying pipe 5 and three node cabins 6, after the seawater in the construction site is pumped out during construction, the site needs to be reinforced, and the ground of the construction site needs to be lower than the preset height of the transportation pipeline, the parking area between the two sealing doors is used for testing the operation and sealing effect of the finished power floating island 1, and the docking of the pipeline at the end of the floating island 1 and the land-based pipeline 44.

[0062] In combination with the drawings Figure 9 , Figure 10 , Figure 11 , Figure 12 and Figure 13 , during the construction of the sea inlet end, the flow velocity detection device 3 located on both sides of the underwater suspended conveying pipeline should be laid at the same time as the construction of the construction site, and immediately enter the monitoring state after being built, so as to provide hydrological data for each node of the built water.

[0063] Pipeline construction, the first two sections of the delivery pipe 5 and the first three node cabin can be built at the same time, node cabin 6 by moving the trolley 40 into the field, after the first section is completed, close the first seal door 37, open the second seal door 38, after the water level is stable, close the second seal door 38, test the first floating island 1. After the test is completed, and the second floating island 1 is built, the third section of the delivery pipe 5 is sealed and prepared, open the two seal doors, remove the support column 42 and the sliding base of the first completed floating island 1, pull the two sections of the three cabins outward by the tugboat 41, until the second floating island 1 enters the parking area, close the two seal doors, start the first floating island 1, and make it work to maintain the stability of the pipeline, then drain the seawater in the work area, and build the remaining part of the third section of the pipeline and start the construction of the fourth section. This cycle continues until the construction of all the pipelines is completed. After the last section of the pipeline is completed and tested, pull it out of the parking area by the tugboat 41, but note that part of the pipeline remains in the parking area, then close the second seal door 38, empty the seawater in the work area, and connect the floating island 1 end pipeline and the land-based pipeline 44. After the connection is completed, backfill the entire work area to restore the original topography. The tugboat 41 should have the ability to move horizontally and resist the influence of water flow to maintain its stability to prevent damage to the pipeline caused by unstable ship body.

[0064] When the construction of the sea end is carried out, the tugboat 41 pulls the pipeline to the predetermined sea point for work in the work area, closes the third seal door 39, drains the seawater in the work area, connects the floating island 1 end pipeline and the land-based pipeline 44, and after the connection is completed, backfills the entire work area to restore the original topography.

[0065] When the land-based section is constructed, the land-based section should be constructed by tunneling directly from the ground to the construction site. After the work area is constructed, it is connected with the exposed transport pipeline. In this step, a concrete protection layer 43 is provided under the roadbed pipeline.

[0066] The above is only a preferred embodiment of the present application and does not limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An underwater suspended transport pipeline, characterized in that, include: Delivery pipe (5); An anti-impact device (28) is provided on the conveying pipe (5) to reduce the impact force of the water flow on the conveying pipe (5); Multiple node compartments (6) are provided on the conveying pipe (5), and a power mechanism (12) is provided on the node compartment (6). Multiple floating islands (1) are floating on the sea surface. Each floating island (1) corresponds to a node compartment (6). Each floating island (1) is connected to the corresponding node compartment (6). Each floating island is also equipped with a power mechanism (12). A water flow velocity and direction detection device (3) is used to detect the flow direction and velocity of seawater; The control device is connected to the water flow velocity and direction detection device (3) and the power mechanism (12). The control device can receive the detection information from the water flow velocity and direction detection device (3) and control the power mechanism (12) to provide power opposite to the water flow direction according to the detection information. The power is the same as the impact force of seawater on the node chamber (6). The shockproof device (28) includes a shockproof outer shell (4) arranged around the conveying pipe (5) and a shockproof component arranged around the shockproof outer shell (4). The shockproof component includes multiple inflation chambers. An air inlet valve (47) and an air release valve are provided on the inflation chambers. An inflation component is connected to the air inlet valve and is located inside the node compartment (6). An air release component is connected to the air release valve and is located inside the node compartment (6). Both the inflation component and the air release component are connected to the control device. The control device can control the opening and closing of the inflation component and the air release component. The shock-absorbing device (28) includes a shock-absorbing shell (4) arranged around the delivery pipe (5) and a plurality of air chambers arranged around the shock-absorbing shell (4). The cross-section of the shock-absorbing device (28) is spindle-shaped. The shock-absorbing device (28) is connected to the drive assembly (9). The drive assembly (9) is connected to the control device. The control device can control the opening and closing of the drive assembly (9) and drive the shock-absorbing device (28) to rotate so that the tip of the shock-absorbing device (28) faces the water flow.

2. The underwater suspended transport pipeline as described in claim 1, characterized in that: The floating island (1) is provided with a sliding bracket (10), which is connected to the node compartment (6). The sliding bracket (10) includes a through hole on the floating island (1). The top of the through hole is provided with a first sliding component (25). The first sliding component (25) can slide left and right in the horizontal direction. The first sliding component (25) is provided with a second sliding component (26), which can slide back and forth in the horizontal direction. The second sliding component (26) is connected to the node compartment (6).

3. The underwater suspended transport pipeline as described in claim 2, characterized in that: A damper (50) is provided between the first sliding component (25) and the side wall of the through hole, and a damper (50) is provided between the second sliding component (26) and the side wall of the through hole. A position sensor is provided on the damper (50), and the position sensor is connected to the control device. The control device can receive the signal from the position sensor and control the power mechanism (12) to work, drive the floating island (1) to move in the opposite direction, and make the floating island (1) return to the origin.

4. The underwater suspended transport pipeline as described in claim 3, characterized in that: The second sliding assembly (26) is provided with a constant force spring support (8), and the node cabin (6) is provided on the constant force spring support (8) so that the tension of the floating island (1) on the node cabin (6) remains constant.

5. The underwater suspended transport pipeline as described in claim 4, characterized in that: The node compartment (6) is provided with a support platform (32), and a support block (31) is provided on the top of the support platform (32). The conveying pipe (5) is provided on the support block (31). The support platform (32) is slidably arranged. A second displacement sensor (29) is provided between the two ends of the support platform (32) and the inner wall of the node compartment (6). The second displacement sensor (29) is connected to the control device. The control device can receive the signal of the second displacement sensor (29) and control the power mechanism (12) to provide reverse thrust so that the node compartment (6) returns to the origin.

6. A method for constructing an underwater suspended transport pipeline, used to construct the underwater suspended transport pipeline as described in claim 5, characterized in that, include: S1. Select the point of entry into the sea, demarcate the construction site, and set up two sealed gates within the site; S2. Select a sea outlet, demarcate the construction site, and set up two sealed doors within the site; S3. Connect the underwater suspended transport pipeline between the inlet point and the outlet point.

7. The underwater suspended transport pipeline construction method as described in claim 6, characterized in that: In step S1, the construction site is no less than the length of two sections of conveying pipe (5) and three node cabins (6). During construction, the seawater in the construction site is first pumped out, and then the foundation is reinforced. The ground of the construction site is lower than the preset height of the transport pipeline. The parking area between the two sealing doors is used to test the operation and sealing effect of the manufactured power floating island (1).

8. The underwater suspended transport pipeline construction method as described in claim 7, characterized in that: In step S2, the construction site is no less than the length of two transport pipes (5) and three node cabins (6). During construction, the seawater in the construction site is first pumped out, and then the foundation is reinforced. The ground of the construction site is lower than the preset height of the transport pipeline. The parking area between the two sealing doors is used to test the operation and sealing effect of the manufactured power floating island (1), and to connect the floating island (1) end pipeline and the land-based pipeline (44).

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