Semi-submersible barge and transportation method thereof

Abstract

The invention relates to the technical field of ships, in particular to a semi-submersible barge and a transportation method thereof.The semi-submersible barge comprises a ballast tank and a ballast pipeline system which are arranged at the bottom of a barge body, the ballast pipeline system comprises a main pipeline, the main pipeline is communicated with a plurality of branch pipelines, and the branch pipelines are communicated with the ballast tank; the ballast pipeline system further comprises a plurality of pump set systems arranged at intervals in the length direction of the main pipeline, and the pump set systems are all communicated with the main pipeline. A middle isolating valve is further installed on the main pipeline, pump set systems are arranged on the two sides of the middle isolating valve, the multiple pump set systems are used in parallel, ballast water can be conveniently injected into or discharged out of a certain ballast tank through the multiple pump set systems, and the ballast water load adjusting efficiency of the ballast tank is improved. The main pipeline is divided into a plurality of groups through the middle isolating valves, the pump set systems are arranged on the two sides of the middle isolating valves, each group is provided with the pump set system, and then the main pipeline and the pump set system of each group form a rapid load adjusting module.

Description

Technical Field

[0001] The present invention relates to the technical field of ships, and in particular to a semi-submersible barge and a transportation method thereof. Background Art

[0002] Semi-submersible barge, also known as semi-submersible ship or semi-submersible mother ship, is a barge that can load offshore platform structures, heavy equipment such as large gantry cranes, or large caissons and other water structures in a semi-submerged state. It adjusts the ballast water to make the loading deck submerged in the water so that the specific cargo to be transported can float from the designated location to the loading deck of the semi-submersible barge, and then transport the cargo to the designated location. Semi-submersible barges are mainly used to transport large steel structures, offshore platforms and movable offshore buildings, transport and install caissons, etc., and can also be used to load containers.

[0003] For example, a Chinese patent with patent publication number CN117922753A discloses a method for adding water to a semi-submersible barge, in which water is added through a seawater steel pipe. However, only one pump body is provided on each seawater steel pipe for pumping water, and the pumping and drainage efficiency in the ballast tank is low, making it difficult to quickly inject or discharge ballast water in the ballast tank, thereby affecting the operating efficiency of the semi-submersible barge. Summary of the invention

[0004] The purpose of the present invention is to provide a semi-submersible barge and a transportation method thereof to address the problems in the prior art that the pumping and drainage efficiency in the ballast tank of the existing semi-submersible barge is low and it is difficult to quickly inject or discharge ballast water in the ballast tank.

[0005] In a first aspect, the present invention provides a semi-submersible barge, comprising a ballast tank and a ballast piping system arranged at the bottom of the hull,

[0006] The ballast pipeline system includes a main pipeline, the main pipeline is connected to a plurality of branch pipelines, and the branch pipelines are connected to the ballast tank;

[0007] The ballast pipeline system also includes a plurality of pump group systems arranged at intervals along the length direction of the main pipeline, and the pump group systems are all connected to the main pipeline;

[0008] An intermediate isolation valve is also installed on the main pipe, and the pump system is arranged on both sides of the intermediate isolation valve.

[0009] A semi-submersible barge described in the present invention has a ballast piping system comprising a main pipe, the main pipe is connected with a plurality of branch pipes, the branch pipes are connected with the ballast tanks, and a plurality of pump systems are arranged at intervals along the length direction of the main pipe, the pump system is connected with the main pipe. Since a plurality of pump systems are connected with the main pipe, the plurality of pump systems are used in parallel, thereby facilitating the injection or discharge of ballast water into or from a ballast tank through the plurality of pump systems, greatly improving the ballast water adjustment efficiency of the ballast tanks. Furthermore, an intermediate isolation valve is installed on the main pipe, and pump systems are arranged on both sides of the intermediate isolation valve. By arranging the intermediate isolation valve on the main pipe, it is convenient to The main line is divided into multiple groups through the intermediate isolation valve. Since pump systems are arranged on both sides of the intermediate isolation valve, each group has a pump system, so that the main line and pump system of each group form a rapid load adjustment module. When it is necessary to adjust the load of the ballast tanks in some areas, the main line is disconnected by closing the corresponding intermediate isolation valve, and then the rapid load adjustment module located in this area is used to adjust the load of the ballast tanks in this area. The pump system closest to this area can be used for load adjustment. The greatly optimized load adjustment path shortens the pipeline mileage and minimizes the power loss, and the ballast water control can be carried out more quickly. At the same time, the power damage of the pump system is also reduced, so as to achieve the purpose of rapid load adjustment.

[0010] Preferably, the pump system comprises a water outlet pipe, a water inlet pipe and a ballast pump group.

[0011] The water outlet pipe and the water inlet pipe are both connected to the main pipe, the ballast pump group is arranged between the water outlet pipe and the water inlet pipe, and the ballast pump group is connected to the water outlet pipe and the water inlet pipe.

[0012] Since the pump system includes an outlet pipe, an inlet pipe and a ballast pump group, the outlet pipe and the inlet pipe are both connected to the main pipe, the ballast pump group is arranged between the outlet pipe and the inlet pipe, and the ballast pump group is connected to the outlet pipe and the inlet pipe, so that each pump system has an independent outlet pipe, inlet pipe and ballast pump group, and each pump system can independently fill or drain the ballast tank through the main pipe. Since each pump system can be used separately, the ballast tank loading efficiency is greatly improved, and the problem of affecting the use of other pump systems when the outlet pipe or inlet pipe of a pump system is damaged is avoided. Furthermore, since multiple pump systems are used in parallel and each pump system has an outlet pipe and an inlet pipe, when the semi-submersible barge of the present application performs ballast tank loading, its operation is more flexible, and multiple pump systems can be called to cooperate in operation.

[0013] Preferably, it further comprises a water inlet and a water outlet arranged at the bottom of the hull, the water outlet pipe is connected to the water inlet, and the water inlet pipe is connected to the water inlet.

[0014] By arranging a water inlet and a water outlet at the bottom of the hull, it is convenient for the pump system to pump and discharge water. When the semi-submersible barge described in the present application dives, since the water inlet is located at the bottom of the hull, it is convenient to use natural water filling to fill the ballast tank with water. At the same time, the water outlet can also be used as a water inlet, thereby increasing the water filling efficiency in the ballast tank. Furthermore, the water inlets can be used in parallel. Since the ballast pipeline system adopts the layout of a main pipeline and a branch pipeline, multiple water inlets can be used to fill the main pipeline with water, and then the water entering the main pipeline is output to a ballast compartment through a branch pipeline, thereby improving the ballasting efficiency.

[0015] Preferably, the ballast pipeline system further comprises a connecting pipeline, wherein the connecting pipeline is used to connect two adjacent main pipelines, and the connecting pipeline is provided on both sides of the intermediate isolation valve.

[0016] By setting a connecting pipeline to connect two adjacent main pipelines, the pump systems of different main pipelines can be used together through the connecting pipeline to jointly pump and drain water for one or several ballast tanks, so that the pump systems of different main pipelines can be used together and the power can be superimposed to improve the ballasting efficiency of the semi-submersible barge described in the present application. Furthermore, when one or more pump systems on a main pipeline are damaged, the pump systems on the remaining main pipelines can be applied to this main pipeline through the connecting pipeline to avoid delaying normal work.

[0017] At the same time, connecting pipelines are arranged on both sides of the middle isolation valve. By closing the middle isolation valve on the main pipeline, the pump systems at the same end of the two adjacent main pipelines can be connected when needed. When pumping and draining water, it is convenient to pump and drain water from the ballast tank at one end of the hull, shorten the pipeline route, reduce the power loss of the pump system, and improve efficiency.

[0018] Preferably, a proportional valve is also installed on the branch pipeline;

[0019] The proportional valve comprises a valve and an electric-controlled hydraulic drive head, and the electric-controlled hydraulic drive head is used to control the opening and closing of the valve.

[0020] Since a proportional valve is installed on the branch pipeline, the opening and closing of the branch pipeline is controlled by the proportional valve, thereby controlling the connection between the branch pipeline and the corresponding ballast tank, and then controlling the pumping and drainage of the ballast tank. Furthermore, the proportional valve includes a valve and an electro-hydraulic drive head, and the electro-hydraulic drive head is used to control the opening and closing of the valve, so that the proportional adjustment of the valve can be achieved through the electro-hydraulic drive head. For example, when a horizontal row of ballast tanks are adjusted in the same group, due to the size of the ballast tanks, the distance of the pipelines and various effects, there will be a pressure difference in the cabins of different ballast tanks, resulting in a change in the floating state of the semi-submersible barge. At this time, the opening of the proportional valves of different ballast tanks can be increased or decreased accordingly, and the pumping and drainage of different branch pipelines in the same group can be proportionally controlled, so that the loading operation of the semi-submersible barge of the present application is smoother, and there is no need to fully open or fully close the valve. Furthermore, due to the use of proportional valves, the switch valve has enough buffer time to effectively eliminate the water hammer effect.

[0021] Preferably, the ballast pipeline system further comprises a bow pipeline, and the bow pipeline is connected to the connecting pipeline close to the bow.

[0022] Connect the bow pipeline to the connecting pipeline to avoid connecting the main pipeline to the bow cabin in order to install the pipeline at the bow, which may cause damage to the structure and strength of the outer wall of the bow cabin.

[0023] Preferably, it further comprises a longitudinal channel arranged at the bottom of the hull, wherein the longitudinal channel is arranged along the length of the hull, and the main pipeline is placed in the longitudinal channel;

[0024] It also includes a pump room arranged at the bottom of the hull, the pump room is arranged at intervals along the length of the hull, and the pump room is connected to the longitudinal pipe;

[0025] The ballast pump group is placed in the pump room.

[0026] In a second aspect, the present invention provides a semi-submersible barge transportation method, characterized in that the semi-submersible barge described in the present application is used to transport a platform, and further comprises the following steps:

[0027] Step 1: driving the semi-submersible barge to the wharf, with the stern of the lifting deck of the semi-submersible barge flush with the wharf;

[0028] Step 2: Control the buoyancy of the semi-submersible barge, align the longitudinal centerline of the semi-submersible barge with the centerline of the platform, wherein the heel range of the semi-submersible barge is: -20cm~+20cm, the semi-submersible barge maintains a certain stern inclination, and the longitudinal inclination range of the semi-submersible barge is -30cm~0cm;

[0029] Step 3: transport the platform by barge, and gradually transfer the platform from the dock to the lifting deck by means of a trolley. During the transfer process, the total amount of ballast water is adjusted by means of the ballast pipeline system, so that the total amount of ballast water of the semi-submersible barge can replace the weight of part of the platform and part of the trolley that are already on the lifting deck;

[0030] Step 4: After the platform is completely transferred to the lifting deck, the semi-submersible barge travels to the designated location and then drops anchor for positioning;

[0031] Step 5: The semi-submersible barge adjusts the total amount of ballast water through the ballast pipeline system, so that the semi-submersible barge gradually dives until the lifting deck is submerged in the water, and at this time, a certain stern trim is maintained to control the speed of change of the waterline area;

[0032] The heel range of the semi-submersible barge is -100 cm to +100 cm. The semi-submersible barge maintains a certain stern inclination. The longitudinal inclination range of the semi-submersible barge is -100 cm to +100 cm.

[0033] Step 6: The semi-submersible barge continues to dive until the platform begins to float, ensuring that the platform can be safely detached from the barge and completing the transportation of the platform.

[0034] The semi-submersible barge transportation method described in the present application is carried out by using the semi-submersible barge described in the present application. After the platform is transferred from the dock to the semi-submersible barge, the ballast water in the ballast tank is discharged through a plurality of pump group systems, so that the adjustment efficiency of the semi-submersible barge is accelerated, thereby enabling the semi-submersible barge to quickly improve the efficiency of use and operation. When the semi-submersible barge needs to dive, water is injected into the ballast tank through a plurality of pump group systems, so that the semi-submersible barge can dive quickly, thereby improving the efficiency of the semi-submersible barge in transporting the platform.

[0035] Preferably, during the process of refueling the platform, the total amount of ballast water of the semi-submersible barge needs to be able to replace the sum of the weight of part of the platform and part of the trolley already on the lifting deck, and the calculation formula for the refueling moment is constructed:

[0036] (F1+F W )*L1=F2*L2

[0037] Where:

[0038] F1—the sum of the weights of the part of the platform and the part of the trolley already on the lifting deck, F W —The weight of the ballast water at the stern, L1—The distance from the stern weight to the centroid, F2—The weight of the ballast water at the bow, L2—The distance from the bow weight to the centroid.

[0039] Preferably, during the platform barge-up process, the weight of the platform will cause the ship inclination angle of the semi-submersible barge to change, and the calculation formula for constructing the ship inclination angle change of the semi-submersible barge is:

[0040] ΔH=F2*L2 / M

[0041] Where:

[0042] ΔH—the inclination change of the semi-submersible barge, F2—the weight of the ballast water at the bow, L2—the distance from the weight of the ballast water at the bow to the moment center, M—the pitch moment per centimeter;

[0043] When the height compensation stroke of the trolley is greater than ΔH, the semi-submersible barge is lifted in a floating state, that is, in S1, the semi-submersible barge is driven to the dock, and then the total amount of ballast water is adjusted through the ballast pipeline system so that the stern of the lifting deck of the semi-submersible barge is flush with the dock;

[0044] When the height compensation stroke of the trolley is less than or equal to ΔH, the semi-submersible barge is lifted by sitting on the bottom, that is, in S1, the front area of ​​the dock is leveled in advance to form a sitting area for the semi-submersible barge, and then a special foundation is set in the sitting area, and the semi-submersible barge sits on the special foundation.

[0045] Preferably, the dedicated foundation comprises a concrete beam, a pad and a flexible layer, the concrete beam is located in a gravel foundation, the pad is installed above the concrete beam, and the flexible layer is installed above the pad.

[0046] Compared with the prior art, the present invention has the following beneficial effects:

[0047] 1. A semi-submersible barge described in the present invention has a ballast pipeline system comprising a main pipeline, wherein the main pipeline is connected to a plurality of branch pipelines, wherein the branch pipelines are connected to the ballast tanks, and a plurality of pump systems are arranged at intervals along the length direction of the main pipeline, wherein the pump system is connected to the main pipeline. Since a plurality of pump systems are connected to the main pipeline, the plurality of pump systems are used in parallel, thereby facilitating the injection or discharge of ballast water into or from a ballast tank through the plurality of pump systems, thereby greatly improving the ballast water adjustment efficiency of the ballast tanks. Furthermore, an intermediate isolation valve is installed on the main pipeline, and pump systems are arranged on both sides of the intermediate isolation valve. By arranging the intermediate isolation valve on the main pipeline, it is convenient to The main pipeline is divided into multiple groups through the intermediate isolation valve. Since pump systems are arranged on both sides of the intermediate isolation valve, each group has a pump system, so that the main pipeline and pump system of each group form a rapid load adjustment module. When it is necessary to adjust the load of the ballast tanks in some areas, the corresponding intermediate isolation valve is closed to disconnect the main pipeline, and then the rapid load adjustment module located in this area is used to adjust the load of the ballast tanks in this area. The pump system closest to this area can be used for load adjustment. The greatly optimized load adjustment path shortens the pipeline mileage and minimizes the power loss, and the ballast water control can be carried out more quickly. At the same time, the power damage of the pump system is also reduced, so as to achieve the purpose of rapid load adjustment;

[0048] 2. The semi-submersible barge transportation method described in the present application is carried out by using the semi-submersible barge described in the present application. After the platform is transferred from the dock to the semi-submersible barge, the ballast water in the ballast tank is discharged through a plurality of pump group systems, so that the adjustment efficiency of the semi-submersible barge is accelerated, thereby enabling the semi-submersible barge to quickly improve the efficiency of use and operation. When the semi-submersible barge needs to dive, water is injected into the ballast tank through a plurality of pump group systems, so that the semi-submersible barge can dive quickly, thereby improving the efficiency of the semi-submersible barge in transporting the platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a side view of the semi-submersible barge described in this application.

[0050] Figure 2 It is a plan view of the bilge of the semi-submersible barge described in this application.

[0051] Figure 3 It is a schematic diagram of the ballast piping system of the semi-submersible barge described in this application.

[0052] Figure 4 yes Figure 3 A local enlarged schematic diagram of point A.

[0053] Figure 5 yes Figure 4 A partial enlarged schematic diagram of point B.

[0054] Figure 6 yes Figure 3 A partial enlarged schematic diagram of point C.

[0055] Figure 7 yes Figure 3 A local enlarged schematic diagram of point D.

[0056] Figure 8 It is a schematic diagram of the layout of the ballast piping system of the semi-submersible barge described in this application at the bottom of the hold.

[0057] Fig. 9 yes Figure 8 A partial enlarged schematic diagram of point E.

[0058] Fig.10 It is a schematic diagram of the lifting deck of the semi-submersible barge described in this application.

[0059] Fig.11 yes Figure 1 Cross-sectional view at FF.

[0060] Fig.12 yes Figure 1 Cross-sectional view at GG.

[0061] Fig.13 This is a schematic diagram of the steps of the semi-submersible barge loading process described in this application. Figure 1 .

[0062] Fig.14 yes Fig.13 Schematic diagram of the bilge.

[0063] Fig.15 This is a schematic diagram of the steps of the semi-submersible barge loading process described in this application. Figure 2 .

[0064] Fig.16 yes Fig.15 Schematic diagram of the bilge.

[0065] Fig.17 This is a schematic diagram of the steps of the semi-submersible barge loading process described in this application. Figure 3 .

[0066] Fig.18 This is a schematic diagram of the steps of the diving process of the semi-submersible barge described in this application. Figure 1 .

[0067] Fig.19 yes Fig.18 Schematic diagram of the bilge.

[0068] Fig. 20 This is a schematic diagram of the steps of the diving process of the semi-submersible barge described in this application. Figure 2 .

[0069] Fig.21 yes Fig. 20Schematic diagram of the bilge.

[0070] Fig. 22 It is a schematic diagram of the semi-submersible barge described in this application.

[0071] Fig.23 It is a schematic diagram of the barge-up moment formula of the present application.

[0072] Fig.24 It is a schematic diagram of the proportional valve of this application.

[0073] Fig.25 It is a schematic diagram of the special foundation structure of this application.

[0074] Fig.26 It is a cross-sectional view of the special foundation of this application.

[0075] Markings in the figure:

[0076] 1-hull, 11-lifting deck, 2-ballast tank, 21-unchanged compartment, 22-drainage compartment, 23-pressurized compartment, 3-ballast piping system, 4-main pipeline, 5-branch pipeline, 51-branch outlet, 6-connecting pipeline, 7-intermediate isolation valve, 8-separate isolation valve, 9-longitudinal pipe, 10-transverse pipe, 20-pump room, 30-water inlet, 40-water outlet, 50-proportional valve, 510-valve, 520-electrically controlled hydraulic drive head, 60-pump system, 70-ballast pump group, 80-outlet pipe, 810-first outlet valve, 90-inlet pipe, 910-first inlet valve, 100-bow pipeline, 200-platform, 300-trolley, 400-mud surface, 500-wharf, 600-special foundation, 610-concrete beam, 620-foundation, 630-flexible layer, 640-pile foundation, 650-pad. DETAILED DESCRIPTION

[0077] The present invention is further described in detail below in conjunction with specific embodiments. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0078] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating the orientation or position relationship such as "up", "down", "left", "right", "center", "inside", "outside", etc. are all based on the expression of the orientation or position relationship shown in the drawings, or are the orientation or position relationship when the invented product / equipment / device is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the present invention or simplifying the description in the specific embodiments, so as to facilitate the technicians to quickly understand the scheme, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present invention.

[0079] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the present invention.

[0080] In addition, the expressions “first”, “second”, “third”, etc., which appear in the terms, are merely used to distinguish the description of the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0081] In addition, in the description of the embodiments of the present invention, "several", "plurality" and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0082] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0083] Example 1

[0084] like Figure 1-Figure 8 As shown, a semi-submersible barge described in this embodiment includes a ballast tank 2 and a ballast pipeline system 3 arranged at the bottom of a hull 1.

[0085] The ballast pipeline system 3 includes a main pipeline 4, and the main pipeline 4 is connected to a plurality of branch pipelines 5, and the branch pipelines 5 are connected to the ballast tank 2;

[0086] The ballast pipeline system also includes a plurality of pump systems 60 arranged at intervals along the length direction of the main pipeline 4, and the pump systems 60 are all connected to the main pipeline 4;

[0087] An intermediate isolation valve 7 is also installed on the main pipeline 4 , and pump system 60 is provided on both sides of the intermediate isolation valve 7 .

[0088] A semi-submersible barge described in this embodiment has a ballast pipeline system 3 including a main pipeline 4, the main pipeline 4 is connected to a plurality of branch pipelines 5, the branch pipelines 5 are connected to the ballast tank 2, and a plurality of pump systems 60 are arranged at intervals along the length direction of the main pipeline, the pump system 60 is connected to the main pipeline 4, and since a plurality of pump systems 60 are connected to the main pipeline 4, the plurality of pump systems 60 are used in parallel, thereby facilitating the injection or discharge of ballast water into or from a ballast tank 2 through the plurality of pump systems 60, greatly improving the ballast water loading efficiency of the ballast tank 2, and further, an intermediate isolation valve 7 is installed on the main pipeline 4, and pump systems 60 are arranged on both sides of the intermediate isolation valve 7, and by arranging the intermediate isolation valve 7 on the main pipeline 4, The main line 4 is divided into a plurality of groups by the intermediate isolation valve 7. Since the pump system 60 is arranged on both sides of the intermediate isolation valve 7, each group has the pump system 60, so that the main line 4 and the pump system 60 of each group form a rapid load adjustment module. When it is necessary to adjust the load of the ballast tank 2 in a part of the area, the main line 4 is disconnected by closing the corresponding intermediate isolation valve 7, and then the rapid load adjustment module located in this area is used to adjust the load of the ballast tank 2 in this area. The pump system 60 closest to this area can be used for load adjustment. The load adjustment path is greatly optimized, the pipeline mileage is short, the power loss is minimized, the ballast water control can be performed more quickly, and the power damage of the pump system 60 is also reduced, so as to achieve the purpose of rapid load adjustment.

[0089] A preferred method is as follows Figure 3 , Figure 6 As shown, the pump system 60 includes a water outlet pipe 80, a water inlet pipe 90 and a ballast pump group 70.

[0090] The water outlet pipe 80 and the water inlet pipe 90 are both connected to the main pipe 4 , the ballast pump group 70 is arranged between the water outlet pipe 80 and the water inlet pipe 90 , and the ballast pump group 70 is connected to the water outlet pipe 80 and the water inlet pipe 90 .

[0091] Since the pump system 60 includes an outlet pipe 80, an inlet pipe 90 and a ballast pump group 70, the outlet pipe 80 and the inlet pipe 90 are both connected to the main pipe 4, the ballast pump group 70 is arranged between the outlet pipe 80 and the inlet pipe 90, and the ballast pump group 70 is connected to the outlet pipe 80 and the inlet pipe 90, so that each pump system 60 has an independent outlet pipe 80, inlet pipe 90 and ballast pump group 70, so that each pump system 60 can independently fill or drain the ballast tank 2 through the main pipe 4. Each pump system 60 can be used independently, which greatly improves the loading efficiency of the ballast tank 2. It also avoids the problem of affecting the use of other pump systems 60 when the outlet pipe 80 or the inlet pipe 90 of a pump system 60 is damaged. Furthermore, since multiple pump systems 60 are used in parallel and each pump system 60 has an outlet pipe 80 and an inlet pipe 90, when the semi-submersible barge of this embodiment loads the ballast tank 2, its operation is more flexible, and multiple pump systems 60 can be called to cooperate in the operation.

[0092] A preferred method is as follows Figure 6 As shown, a first water outlet valve 810 is installed on the water outlet pipe 80, and the first water outlet valve 810 is used to control the connection between the water outlet pipe 80 and the external water source. A first water inlet valve 910 is installed on the water inlet pipe 90, and the first water inlet valve 910 is used to control the connection between the water inlet pipe 90 and the external water source.

[0093] A preferred method is as follows Figure 8-Figure 9 As shown, it also includes a water inlet 30 and a water outlet 40 arranged at the bottom of the hull 1 , the water outlet pipe 80 is connected to the water inlet 30 , and the water inlet pipe 90 is connected to the water inlet 30 .

[0094] By arranging a water inlet 30 and a water outlet 40 at the bottom of the hull 1, it is convenient for the pump system 60 to pump and discharge water. When the semi-submersible barge of this embodiment dives, since the water inlet 30 is located at the bottom of the hull 1, it is convenient to use natural water filling to fill the ballast tank 2 with water. At the same time, the water outlet 40 can also be used as a water inlet, thereby increasing the water filling efficiency in the ballast tank 2. Furthermore, the water inlet 30 can be used in parallel. Since the ballast pipeline system 3 adopts the arrangement of a main pipeline 4 plus a branch pipeline 5, multiple water inlets 30 can be used to fill the main pipeline 4 with water, and then the water entering the main pipeline 4 is output to a certain ballast tank 2 through a branch pipeline 5, thereby improving the ballasting efficiency.

[0095] A preferred method is as follows Figure 3 As shown, the ballast pipeline system 3 further includes a connecting pipeline 6 , which is used to connect two adjacent main pipelines 4 , and connecting pipelines 6 are provided on both sides of the middle isolation valve 7 .

[0096] By providing a connecting pipeline 6 to connect two adjacent main pipelines 4, the pump systems 60 of different main pipelines 4 can be used together through the connecting pipeline 6 to pump and drain water for one or more ballast tanks 2, so that the pump systems 60 of different main pipelines 4 can be used together and power can be superimposed to improve the ballasting efficiency of the semi-submersible barge of this embodiment. Furthermore, when one or more pump systems 60 on a main pipeline 4 are damaged, the pump systems 60 on the remaining main pipelines 4 can be applied to this main pipeline through the connecting pipeline 6 to avoid delaying normal work.

[0097] At the same time, connecting pipes 6 are arranged on both sides of the intermediate isolation valve 7. By closing the intermediate isolation valve 7 on the main pipe 4, the pump system 60 at the same end of the two adjacent main pipes 4 can be connected when needed. When pumping and draining water, it is convenient to pump and drain water from the ballast tank 2 at one end of the hull 1, shorten the pipeline route, reduce the power loss of the pump system 60, and improve efficiency.

[0098] Preferably, if Figure 3 , Figure 7 As shown, a separation isolation valve 8 is installed on the connecting pipeline 6, and the separation isolation valve 8 is used to control the opening and closing of the connecting pipeline 6. When two main pipelines 4 need to be connected, the separation isolation valve 8 is opened to connect the two adjacent main pipelines 4 through the connecting pipeline 6. When the two main pipelines 4 need to be disconnected, the separation isolation valve 8 is closed to block the connecting pipeline 6 and disconnect the two adjacent main pipelines 4.

[0099] A preferred method is as follows Figure 3-Figure 5 A proportional valve 50 is also installed on the branch pipe 5 shown;

[0100] like Fig.24 As described above, the proportional valve 50 includes a valve 510 and an electric-controlled hydraulic drive head 520 , and the electric-controlled hydraulic drive head 520 is used to control the opening and closing of the valve 510 .

[0101] Since the proportional valve 50 is installed on the branch pipeline 5, the proportional valve 50 is used to control the opening and closing of the branch pipeline 5, thereby controlling the connection between the branch pipeline 5 and the corresponding ballast tank 2, and then controlling the drainage of the ballast tank 2. Further, the proportional valve 50 includes a valve 510 and an electric control liquid driving head 520. The electric control liquid driving head 520 is used to control the opening and closing of the valve 510, so that the proportional adjustment of the valve 510 can be realized by the electric control liquid driving head 520. For example, when a horizontal row of ballast tanks 2 are adjusted in the same group, due to the size of the ballast tank 2, the distance of the pipeline and various effects, there will be a pressure difference in the compartments of different ballast tanks 2, resulting in a change in the floating state of the semi-submersible barge. At this time, the opening of the proportional valve 50 of different ballast tanks 2 can be increased or decreased accordingly, and the drainage of different branch pipelines in the same group can be proportionally controlled, so that the loading operation of the semi-submersible barge of this embodiment is smoother, so that there is no need to fully open or fully close the valve. Further, due to the use of the proportional valve 50, the switch valve has enough buffer time, which can effectively eliminate the water hammer effect.

[0102] In a preferred manner, the manufacturer of the electric-hydraulic drive head 520 is Shanghai Mai Ling Automation Technology Development Co., Ltd., and the models of the electric-hydraulic drive head 520 include EHS-D3 / 420-3G-H, EHS-D3 / 620-3G-H, EHS-D3 / 900-3G-H, and EHS-D3 / 34-3G-H; the valve 510 type is a butterfly valve.

[0103] In a preferred manner, the valves used in the structure of the present application, such as the intermediate isolation valve 7 and the separate isolation valve 8 , can adopt the structural form of a proportional valve 50 .

[0104] Preferably, if Figure 4 As shown, a branch pipe 5 is provided on the pipe in the ballast tank 2 and a branch opening 51 is provided. The branch pipe 5 is connected with the ballast tank 2 through the branch opening 51. When the ballast tank 2 is filled with water, the water flows into the main pipe 4 through the pump system 60, and then into the corresponding branch pipe 5, and then into the ballast tank 2 through the branch opening 51 of the branch pipe 5, so as to adjust the ballast water in the ballast tank 2. When the ballast tank 2 is drained, the water flows into the branch pipe 5 through the branch opening 51, and then into the main pipe 4, and then is discharged through the pump system 60.

[0105] When filling the ballast tank 2 with water, the branch pipe 5 corresponding to the ballast tank 2 that needs to be filled with water is opened in advance as needed, that is, the proportional valve 50 on the corresponding branch pipe 5 is opened to connect it with the main pipe 4; for the other ballast tanks 2 that do not need to be filled with water, the proportional valve 50 on the corresponding branch pipe 5 is closed to disconnect it from the main pipe 4;

[0106] When draining the ballast tank 2, the branch pipe 5 corresponding to the ballast tank 2 that needs to be drained is opened in advance as needed, that is, the proportional valve 50 on the corresponding branch pipe 5 is opened to connect it with the main pipe 4; for the other ballast tanks 2 that do not need to be drained, the proportional valve 50 on the corresponding branch pipe 5 is closed to prevent it from being connected with the main pipe 4.

[0107] A preferred method is as follows Figure 8-Figure 9 , Figure 11-Figure 12 As shown, it also includes a longitudinal channel 9 arranged at the bottom of the hull 1, the longitudinal channel 9 is arranged along the length of the hull, and the main pipeline 4 is placed in the longitudinal channel 9;

[0108] It also includes a pump room 20 arranged at the bottom of the hull, the pump room 20 is arranged at intervals along the length of the hull, and the pump room 20 is connected to the longitudinal pipe lane 9;

[0109] The ballast pump group 70 is placed in the pump room 20 .

[0110] It also includes a transverse pipe channel 10, which is arranged at the bow and the stern of the hull 1, and is used to connect adjacent longitudinal pipe channels 9 together.

[0111] In a preferred embodiment, the ballast pipeline system 3 further includes a bow pipeline 100, and the bow pipeline 100 is connected to the connecting pipeline 6 close to the bow.

[0112] The bow pipeline 100 is connected to the connecting pipeline 6 to avoid the situation where the main pipeline 4 is connected to the bow cabin in order to install the pipeline at the bow, causing damage to the structure and strength of the outer wall of the bow cabin.

[0113] A preferred method is that, under the premise that the structural strength of the ship allows, the ballast is adjusted according to the principle of "first the middle, then the two ends", and the drainage is adjusted according to the basic principle of "first the two ends, then the middle". The main purpose is to allow the ballast tanks 2 at the four corners to maintain a certain empty space margin, and during the barge process, ensure that the ship's inclination angle is adjustable and the adjustment speed is fast.

[0114] A preferred method includes an air-blowing liquid level gauge and a piezoelectric liquid level gauge, a sensor disconnection of each ballast tank 2, a high-level alarm (0.85H), a high-high-level alarm (0.95H), a low-level alarm (0.1~0.2H), etc., so that the semi-submersible barge can perform liquid level telemetry and realize real-time liquid level measurement.

[0115] A preferred method further comprises a magnetostrictive displacement sensor with a sensor accuracy of ≤0.05% FS and high sensing accuracy for measuring the deflection of the semi-submersible barge.

[0116] In a preferred embodiment, the semi-submersible barge also includes a loading adjustment software and a loading calculation software, wherein the loading adjustment software collects data such as bending moment, shear force, deflection, etc. in real time and compares them with the safety set values; then the loading adjustment software transmits the liquid level and deflection data to the loading calculation software in real time; the loading calculation software calculates the loading scheme (the loading amount of each ballast tank 2) of the target working condition based on the basic hull data of the design institute and the real-time data of the loading adjustment software, and sends the deflection value, bending moment, shear force value, etc. adjusted in real time to the loading adjustment software so that the adjustment software can make adjustments, that is, the adjustment software controls the opening and closing of the pump system 60 and various valve structures.

[0117] The loading software of semi-submersible barge is divided into three modes: manual, automatic and intelligent.

[0118] In manual mode: manually switch the valve to adjust the load according to the loading plan transmitted by the loading calculation software, and receive the bending moment, shear force and deflection data in real time for alarm verification.

[0119] In automatic mode: the load is adjusted through the automatic switch valve according to a loading scheme of the loading calculation software. If the loading amount is reached, all valves are automatically closed and the process ends. The process receives the bending moment, shear force and deflection data in real time for alarm verification.

[0120] In intelligent mode: In the semi-submersible barge semi-submersible operation mode, in order to ensure the initial deflection value, the loading calculation software outputs the step loading plan in real time (the step value is adjustable in the software), and the loading adjustment software automatically switches the valve. If the bending moment, shear force, deflection and other data are abnormal during the loading adjustment process, the system can suspend the intelligent loading adjustment and conduct manual intervention. After the intervention is completed, the intelligent loading adjustment can continue until the semi-submersible process is completed, and the intelligent loading adjustment mode is completed.

[0121] The loading software transmits the liquid level, draft, and deflection deformation data of the ballast tank 2 to the loading calculation software in real time. The loading calculation software calculates the bending moment, shear force and other data of the hull based on the real-time received data and the ship's own counterweight conditions. While ensuring the safety of the ship, the final displacement data of the ballast tank 2 and the bending moment and shear force data are transmitted to the semi-submersible barge loading software in real time. In intelligent mode, the loading software switches the pump and valve according to the final cabin ballast data and the distance that the platform 200 enters the semi-submersible barge (in the drainage process, according to the measured distance, the ballast tank that the submerged tube enters is automatically drained first, and the ballast tank that has not entered is drained later). At the same time, it accepts the ship's bending moment and shear force data. Once the bending moment, shear force, and final bottoming (gravity-buoyancy) data calculated by the loading exceed the set value or the deflection deformation exceeds the set value, an alarm can be issued, the pump and valve can be automatically stopped and the valve operation can be switched to manual mode for manual intervention.

[0122] Example 2

[0123] like Figure 13-Figure 21As shown, the semi-submersible barge transportation method described in this embodiment uses the semi-submersible barge described in Example 1 to transport the platform 200, and also includes the following steps:

[0124] Step 1: Drive the semi-submersible barge to the pier 500, and the stern of the lifting deck 11 of the semi-submersible barge is flush with the pier 500;

[0125] The stern of the semi-submersible barge is close to the dock, and the platform 200 enters the lifting deck 11 from the stern direction;

[0126] Step 2: Control the buoyancy of the semi-submersible barge so that the longitudinal centerline of the semi-submersible barge is aligned with the centerline of the platform 200;

[0127] Among them, the heel of the semi-submersible barge is as close to 0 as possible, the heel range of the semi-submersible barge is: -20cm~+20cm, the semi-submersible barge maintains a certain stern trim, and the longitudinal tilt range of the semi-submersible barge is -30cm~0cm;

[0128] Step 3: The platform 200 is transported by the barge. The platform 200 is gradually transferred from the dock 500 to the lifting deck 11 by the trolley 300. During the transfer process, the total amount of ballast water is adjusted by the ballast pipeline system 3 so that the total amount of ballast water of the semi-submersible barge can replace the weight of part of the platform 200 and part of the trolley 300 already on the lifting deck 11;

[0129] The platform 200 is transported to the lifting deck 11 by a trolley 300. The trolley 300 has an altitude compensation function, can adjust the height difference between the dock 500 and the lifting deck 11, and has a steering function.

[0130] A preferred method is as follows Figure 13-Figure 16 As shown, during the process of the semi-submersible barge of the present embodiment being loaded, since the platform 200 enters the lifting deck 11 from the stern direction, the ballast tanks 2 in the stern direction are gradually drained to form a drainage chamber 22 to reduce the weight of the stern part of the semi-submersible barge, and the ballast tanks 2 in the bow direction are pressurized to form a pressurized chamber 23 to increase the weight of the bow part of the semi-submersible barge. The remaining ballast tanks 2 that are not drained or pressurized are unchanged chambers 21, as shown below:

[0131] In the order from the stern to the bow, the hull 1 is divided into several axes along the longitudinal direction, such as the X0 axis to the X80 axis. After the preparation for the barge is completed, when the platform 200 gradually enters the lifting deck 11, such as when the platform 200 enters near the X8 axis of the hull 1, the transverse ballast tanks 2 near the X8 axis are drained to form a drainage chamber 22, and then the ballast tanks 2 in the bow direction, such as the ballast tanks 2 in the X70 axis to X80 axis area, are pressurized to form a pressurized water chamber 23;

[0132] When the platform 200 enters the lifting deck 11, the ballast tank 2 near the axis of the platform 200 is gradually drained, and the ballast tank 2 in the bow direction is gradually pressurized to keep the semi-submersible barge in a balanced state. When the platform 200 completely enters the lifting deck 11 of the semi-submersible barge, the stern sealing plate of the semi-submersible barge is aligned to seal the stern;

[0133] Among them, since multiple pump systems 60 are connected to the main pipeline 4 of the ballast pipeline system 3, the multiple pump systems 60 are used in parallel, so it is convenient to drain or pressurize water to one or more ballast tanks 2 through multiple pump systems 60, which greatly improves the ballast water loading efficiency of the ballast tank 2.

[0134] Step 4: If Fig.17 As shown, after the platform 200 is completely transferred to the lifting deck 11, the semi-submersible barge travels to the designated location and then drops anchor for positioning;

[0135] Step 5: If Figure 18-Figure 21 As shown, the semi-submersible barge adjusts the total amount of ballast water through the ballast pipeline system 3, so that the semi-submersible barge gradually dives until the lifting deck 11 is submerged in the water. At this time, a certain stern trim is maintained to control the speed of change of the waterline area;

[0136] Among them, the heel range of the semi-submersible barge is: -100cm~+100cm, the semi-submersible barge maintains a certain stern inclination, and the longitudinal inclination range of the semi-submersible barge is -100cm~+100cm;

[0137] During the diving process of the semi-submersible barge of this embodiment, water is pressed into the ballast tank 2 through the ballast pipe system 3 to increase the amount of ballast water in the ballast tank 2, forming a pressurized water chamber 23, so as to increase the weight of the semi-submersible barge and make the semi-submersible barge gradually dive. Furthermore, when pressing water into the ballast tank 2, water should be pressed from the middle of the hull 1 to both sides as much as possible;

[0138] Among them, since multiple pump systems 60 are connected to the main pipeline 4 of the ballast pipeline system 3, the multiple pump systems 60 are used in parallel, so it is convenient to pressurize water to one or more ballast tanks 2 through the multiple pump systems 60, which greatly improves the ballast water loading efficiency of the ballast tank 2 and realizes rapid water pressurization of the ballast tank 2.

[0139] In a preferred manner, when the semi-submersible barge arrives at the designated location and during the interval of anchoring and positioning, pre-ballasting is started;

[0140] A preferred method is to perform pre-ballasting when the semi-submersible barge arrives at the designated location, during anchoring and unsealing, and during cable-carrying;

[0141] Step 6: The semi-submersible barge continues to dive until the platform begins to float, ensuring that the platform can be safely detached from the barge and completing the transportation of the platform 200.

[0142] A preferred method is as follows Fig.23 As shown, during the refueling process of the semi-submersible barge, the total amount of ballast water of the semi-submersible barge needs to be able to replace the sum of the weight of part of the platform 200 and part of the trolley 300 already on the lifting deck 11, and the refueling moment calculation formula is constructed:

[0143] (F1+F W )*L1=F2*L2

[0144] Where:

[0145] F1—the sum of the weights of the part of the platform 200 and the part of the trolley 300 already on the lifting deck 11, F W —The weight of the ballast water at the stern, L1—The distance from the stern weight to the centroid, F2—The weight of the ballast water at the bow, L2—The distance from the bow weight to the centroid.

[0146] The above formula is used to calculate and control the ballast water gravity in the ballast tank 2, that is, to control the stern ballast water gravity F W The total amount of ballast water in the semi-submersible barge needs to be able to replace the weight of part of the platform 200 and part of the trolley 300 already on the lifting deck 11, so that the semi-submersible barge can maintain balance and stability during the barge process.

[0147] A preferred method, according to the information in the Maritime Administration publications, is that the tidal height reference plane is below the average sea level. When the platform 200 enters the semi-submersible barge, the tidal height reference plane also changes with time. The freeboard height of the semi-submersible barge = the elevation of the pier 500 - the tidal height, and the draft depth of the semi-submersible barge = the ship depth of the semi-submersible barge - the freeboard height of the semi-submersible barge.

[0148] Example 3

[0149] like Figure 13-Figure 23 As shown, based on Example 2, in the method for transporting a semi-submersible barge described in this embodiment, during the process of loading the platform 200, the weight of the platform 200 causes the ship inclination angle of the semi-submersible barge to change, and the calculation formula for constructing the change of the ship inclination angle of the semi-submersible barge is:

[0150] ΔH=F2*L2 / M

[0151] Where:

[0152] ΔH—the change of inclination of the semi-submersible barge, F2—the weight of ballast water at the bow, L2—the distance from the weight of ballast water at the bow to the moment center, M—the moment of longitudinal tilt per centimeter.

[0153] The calculation formula for the change of the ship's inclination angle is used to calculate the limit value of the ship's inclination change under the critical state of the ship, that is, the extreme value framework of the ship's inclination change of the semi-submersible barge is established according to the critical state framework of the ship. The operation of the ship's inclination angle change of the semi-submersible barge within the framework can be operated, which greatly frees up the hands and feet of the front-line operators. No matter how the situation changes, as long as the key parameters of the barge process are controlled within the framework, the barge is safe and reliable operation is achieved, avoiding the risk of the stern capsizing during the operation due to the excessive inclination angle of the semi-submersible barge, which leads to excessive height difference between the dock and the lifting deck 11. During the transfer of the platform to the lifting deck 11,

[0154] When the height compensation stroke of the trolley 300 is greater than ΔH, that is, the height compensation stroke of the trolley 300 can ensure that the change of the ship inclination angle of the semi-submersible barge does not exceed the extreme value ΔH, the semi-submersible barge can be lifted in a floating state, that is, in S1, the semi-submersible barge is driven to the dock, and then the total amount of ballast water is adjusted through the ballast pipeline system 3, so that the stern of the lifting deck 11 of the semi-submersible barge is flush with the dock 500;

[0155] Among them, the height difference between the dock and the lifting A11 plate ranges from -10cm to 0cm;

[0156] In S4, after the platform 200 is completely transferred to the lifting deck 11, the buoyancy and draft of the semi-submersible barge are adjusted to make the semi-submersible barge meet the transportation requirements, and then the semi-submersible barge is controlled to travel to the designated position and then anchored.

[0157] When the height compensation stroke of the trolley 300 is less than or equal to ΔH, that is, the height compensation stroke of the trolley 300 is difficult to ensure that the change of the ship inclination angle of the semi-submersible barge does not exceed the extreme value ΔH, there will be certain risks if the floating state is used to lift the barge at this time, so the semi-submersible barge adopts the bottom-sitting lifting method, that is, in S1, the bed of the front area of ​​the dock 500 is first leveled in advance to form a bottom-sitting area for the semi-submersible barge, and then a special foundation 600 is set in the bottom-sitting area, and the semi-submersible barge is seated on the special foundation 600;

[0158] Among them, the bottom of the semi-submersible barge is in contact with the special foundation 600, maintaining a certain friction force, and the semi-submersible barge does not shake. The pressure on the special foundation 600 cannot exceed the foundation design load. The uniform load on the bottom of the semi-submersible barge is 25t / ㎡, and the intersection points and pillars of the longitudinal and transverse bulkhead structures can withstand the concentrated force of 200t load;

[0159] After the semi-submersible barge is seated on the bottom, the semi-submersible barge remains level with the dock;

[0160] If it cannot be level due to foundation reasons, the transverse inclination range of the semi-submersible barge can be controlled to -20cm~+20cm by adjusting the load, and the longitudinal inclination range of the semi-submersible barge can be controlled to -30cm~0cm by adjusting the load.

[0161] In S4, after the platform 200 is completely transferred to the lifting deck 11, the semi-submersible barge is floated, and then the semi-submersible barge is controlled to travel to a designated position and then anchored.

[0162] The dedicated foundation 600 is provided to reduce the settlement of the base bed in the front area of ​​the wharf when the semi-submersible barge is seated.

[0163] During the process of submerged tube barge loading, ensure that the bed load is always less than the deadweight of the semi-submersible barge.

[0164] like Figure 25-26 As shown, the dedicated foundation 600 includes a concrete beam 610 , a foundation 620 , and a flexible layer 630 . The bottom of the concrete beam 610 is located in the foundation 620 , and the flexible layer 630 is disposed on the top of the concrete beam 610 .

[0165] The bottom of the concrete beam 610 is located in the foundation 620 to ensure that the concrete beam 610 is supported by the foundation 620, and a flexible layer 630 is arranged on the top of the concrete beam 610 to play a buffering role when the semi-submersible barge contacts the dedicated foundation 600. Furthermore, a pad 650 is first installed on the top of the concrete beam 610, and then a flexible layer 630 is arranged on the pad 650;

[0166] The ground below the foundation 620 is processed by pile foundation 640 , and the replacement rate is 30-40%. The foundation 620 is effectively supported by the pile foundation 640 .

[0167] In a preferred embodiment, the foundation 620 is a gravel bed.

[0168] In a preferred embodiment, the backing plate 650 is a steel plate.

[0169] In a preferred embodiment, the flexible layer 630 is made of rubber material.

[0170] In a preferred manner, the platform 200 referred to in this embodiment includes a caisson, a submerged tube, other operating vessels, and the like.

[0171] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A semi-submersible barge, characterized in that: It comprises a ballast tank (2) and a ballast pipeline system (3) arranged at the bottom of a hull (1). The ballast pipeline system (3) comprises a main pipeline (4), the main pipeline (4) is connected to a plurality of branch pipelines (5), and the branch pipelines (5) are connected to the ballast tank (2); The ballast pipeline system further comprises a plurality of pump systems (60) arranged at intervals along the length direction of the main pipeline (4), and the pump systems (60) are all connected to the main pipeline (4); An intermediate isolation valve (7) is also installed on the main pipeline (4), and the pump system (60) is provided on both sides of the intermediate isolation valve (7).

2. A semi-submersible barge according to claim 1, characterized in that: The pump system (60) comprises a water outlet pipe (80), a water inlet pipe (90) and a ballast pump group (70). The water outlet pipe (80) and the water inlet pipe (90) are both connected to the main pipeline (4), the ballast pump group (70) is arranged between the water outlet pipe (80) and the water inlet pipe (90), and the ballast pump group (70) is connected to the water outlet pipe (80) and the water inlet pipe (90).

3. A semi-submersible barge according to claim 2, characterized in that: It also comprises a water inlet (30) and a water outlet (40) arranged at the bottom of the hull (1), the water outlet pipe (80) being connected to the water inlet (30), and the water inlet pipe (90) being connected to the water inlet (30).

4. A semi-submersible barge according to claim 1, characterized in that: The ballast pipeline system (3) further comprises a connecting pipeline (6), wherein the connecting pipeline (6) is used to connect two adjacent main pipelines (4), and the connecting pipeline (6) is provided on both sides of the intermediate isolation valve (7).

5. A semi-submersible barge according to claim 1, characterized in that: A proportional valve (50) is also installed on the branch pipeline (5); The proportional valve (50) comprises a valve (510) and an electric-controlled hydraulic drive head (520), wherein the electric-controlled hydraulic drive head (520) is used to control the opening and closing of the valve (510).

6. A semi-submersible barge according to any one of claims 2-5, characterized in that: It also comprises a longitudinal channel (9) arranged at the bottom of the hull (1), the longitudinal channel (9) being arranged along the length of the hull, and the main pipeline (4) being placed in the longitudinal channel (9); It also includes a pump room (20) arranged at the bottom of the hull, wherein the pump room (20) is arranged at intervals along the length of the hull, and the pump room (20) is connected to the longitudinal pipe lane (9); The ballast pump group (70) is placed in the pump room (20).

7. A semi-submersible barge transportation method, characterized in that: Using a semi-submersible barge as claimed in any one of claims 1 to 6 to transport a platform (200) further comprises the following steps: Step 1: driving the semi-submersible barge to the wharf (500), with the stern of the lifting deck (11) of the semi-submersible barge flush with the wharf (500); Step 2: controlling the buoyancy of the semi-submersible barge so that the longitudinal centerline of the semi-submersible barge is aligned with the centerline of the platform (200); Step 3: transporting the platform (200) by barge, gradually transferring the platform (200) from the dock (500) to the lifting deck (11) by means of a trolley (300). During the transfer process, the total amount of ballast water is adjusted by means of the ballast pipeline system (3), so that the total amount of ballast water of the semi-submersible barge can replace the weight of part of the platform (200) and part of the trolley (300) already on the lifting deck (11); Step 4: After the platform (200) is completely transferred to the lifting deck (11), the semi-submersible barge travels to a designated location and then drops anchor for positioning; Step 5: The semi-submersible barge adjusts the total amount of ballast water through the ballast pipeline system (3), so that the semi-submersible barge gradually dives until the lifting deck (11) is submerged in the water, at which time a certain stern trim is maintained to control the speed of change of the waterline area; Step 6: The semi-submersible barge continues to dive until the platform (200) begins to float, ensuring that the platform (200) can be safely detached from the barge, thereby completing the transportation of the platform (200).

8. A semi-submersible barge transportation method according to claim 7, characterized in that: During the process of refueling the platform (200), the total amount of ballast water of the semi-submersible barge needs to be able to replace the sum of the weight of part of the platform (200) and part of the trolley (300) already on the lifting deck (11), and the calculation formula for the refueling moment is constructed: <h2 style=";text-align:left;direction:ltr">(F1+F<h2 style=";text-align:left;direction:ltr"> W <h2 style=";text-align:left;direction:ltr"> *L1=F2*L2 Where: F1—the sum of the weight of the part of the platform (200) and the part of the trolley (300) already on the lifting deck (11), F W —The weight of the ballast water at the stern, L1—The distance from the stern weight to the centroid, F2—The weight of the ballast water at the bow, L2—The distance from the bow weight to the centroid.

9. A semi-submersible barge transportation method according to claim 8, characterized in that: During the process of the platform (200) being brought onto the ship, the weight of the platform (200) will cause the ship inclination angle of the semi-submersible barge to change. The calculation formula for constructing the change in the ship inclination angle of the semi-submersible barge is: ΔH=F2*L2 / M Where: ΔH—the inclination change of the semi-submersible barge, F2—the weight of the ballast water at the bow, L2—the distance from the weight of the ballast water at the bow to the moment center, M—the pitch moment per centimeter; When the height compensation stroke of the trolley (300) is greater than ΔH, the semi-submersible barge is lifted in a floating state, that is, in S1, the semi-submersible barge is driven to the dock, and then the total amount of ballast water is adjusted through the ballast pipeline system (3) so that the stern of the lifting deck (11) of the semi-submersible barge is flush with the dock (500); When the height compensation stroke of the trolley (300) is less than or equal to ΔH, the semi-submersible barge is lifted by sitting on the bottom, that is, in S1, the front area of ​​the dock (500) is first leveled in advance to form a sitting area for the semi-submersible barge, and then a special foundation (600) is set in the sitting area, and the semi-submersible barge is seated on the special foundation (600).

10. A semi-submersible barge transportation method according to claim 9, characterized in that: The dedicated foundation (600) comprises a concrete beam (610), a foundation (620) and a flexible layer (630), wherein the bottom of the concrete beam (610) is located in the foundation (620), and the flexible layer (630) is arranged on the top of the concrete beam (610).

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