JP3237813U - Roll-on / roll-off transfer system for floating offshore wind platforms - Google Patents

Abstract

PROBLEM TO BE SOLVED: To roll-on for a floating offshore wind power generation platform which can be mounted on a ground area covered with a crane without occupying a dock, has high stability, short shipping time, is easy to operate, and can effectively reduce costs. -Provide a roll-off transfer system.
SOLUTION: The roll-on / roll-off transfer system for a floating offshore wind power generation platform includes a wharf mooring facility, in which a plurality of traction facilities are arranged at equal intervals in the coastal direction at the wharf mooring facility. Mooring vessels are placed so that a continuous quay is formed between the facility and the wind power platform. This mooring system has a special structural form and can be used for mooring at piers with large water level differences in new wind power generation platforms with large differences in tons, and the impact force from the piers between wind power generation platforms. Can be effectively dispersed.
[Selection diagram] Fig. 2

Description

The present invention belongs to the field of offshore wind power generation, and particularly relates to a roll-on / roll-off transfer system for a floating offshore wind power generation platform.

Compared to current mainstream fixed offshore wind power generation technology, floating offshore wind power generation technology is suitable for larger offshore spaces, is not affected by the geological conditions of the seabed, and costs more in areas deeper than 50 meters. There are the above advantages. At the same time, the impact of the installation work on the environment is relatively small, and the position setting of the fan is relatively flexible. With the development of offshore wind power, floating offshore wind power generation is an unavoidable choice for future development. The existing technology wind power platform is not suitable for the conventional construction method of assembling in the dock and then carrying it out of the dock for use, so the purpose is to be able to mount it in a crane-covered ground area without occupying the dock. A roll-on / roll-off transfer system for floating offshore wind turbines needs to be designed to achieve this.

The technical problem to be solved by the present invention is to provide a roll-on / roll-off transfer system for a floating offshore wind turbine, which is a construction site through a self-propelled modular transporter (SPMT). It is a system that transports from to the front of the pier, rolls on and rolls off the semi-submersible barge in place after the tide meets the requirements for shipping, and completes the loading and unloading of the barge, and this system is stable. It is expensive, the shipping time is short, it is easy to operate, and the cost can be effectively reduced.

In order to solve the above technical problems, the present invention employs the following technical solutions.
A roll-on / roll-off transfer system for floating offshore wind turbines, including a semi-submersible barge moored to the pier via a cable, fitted to the side plate of the semi-submersible barge in contact with the quay of the pier. A plurality of connection platforms are connected, and a stepping platform provided on the surface of each connection platform is fitted with a self-propelled module carrier arranged below the wind power generation platform 6, and a plurality of sets of the self-propelled type are used. The module carrier is provided at a position corresponding to a plurality of connection platforms 2.

Preferably, on the surface of the semi-submersible platform, three sets of support mechanisms, each composed of a plurality of boards, are provided, each of which is below a predetermined mounting position of the three floats of the wind power generation platform. Is located in.

Preferably, a height adjusting wedge is provided on the surface of the board, and the upper surfaces of the plurality of sets of board are all located on the same horizontal plane.

Preferably, three self-propelled module carriers are placed below the first float of the wind power generation platform, and four SPMT modular trailers are placed below the second float and the third float, respectively.

Further, for the self-propelled module carrier, it is determined that a total of 212 SPMT axes and 11 PPU power heads are selected according to the shape characteristics and the weight distribution curve of the wind power generation platform.

In addition, three connection platforms are installed. One works with the first float and the other two are symmetrically placed on both sides of the semi-submersible and work with the second and third floats.

Preferably, the photoelectric sensor located on the berthing side of the semi-submersible barge cooperates with the reflection plate of the pier, the photoelectric sensor is electrically connected to the control circuit of the self-propelled module carrier, and the photoelectric sensor is semi. It detects whether the relative heights between the submersible and the pier are the same, and controls the operation of the self-propelled module carrier based on the feedback result.

In addition, the photoelectric sensor detects the relative height between the semi-submersible platform and the wharf and feeds it back to the control room of the semi-submersible platform to control the rise or fall of the semi-submersible platform. Make adjustments.

The present invention has the following beneficial effects.
In the prior art, the system compensates for the flaws of the conventional construction method of assembling in the dock and then carrying it out of the dock for use, and the floating wind power generation platform does not occupy the dock and is covered with a crane on the ground. It achieves the objectives that can be implemented in the area, is highly stable, has a short shipping time, is easy to operate, and can effectively reduce costs.

FIG. 1 is a pier mooring layout of the semi-submersible platform of the present invention. FIG. 2 is a stacked layout and board layout of wind power generation platforms. FIG. 3 is a schematic view of the connection between the wind power generation platform of the present invention and the self-propelled module carrier. FIG. 4 is a vehicle allocation layout diagram of the self-propelled module transport vehicle of the present invention.

Example 1
As shown in FIGS. 1 to 4, a roll-on / roll-off transfer system for a floating offshore wind turbine platform, including a semi-submersible carrier 1 moored to a wharf 3 via a cable, the semi-submersible carrier 1. A plurality of connection platforms 2 that are fitted in contact with the quay of the wharf 3 are connected to the side plate of the wharf, and a plurality of steps provided on the surface of the connection platform 2 are located at positions corresponding to the plurality of connection platforms 2. It is characterized in that it is fitted with a set of self-propelled module transport vehicles 4 and a plurality of sets of self-propelled module transport vehicles 4 are provided below the wind power generation platform 6.

Preferably, on the surface of the semi-submersible platform 1, three sets of support mechanisms each composed of a plurality of boards 5 are provided, and the three sets of support mechanisms are predetermined for each of the three floats of the wind power generation platform 6. It is located below the mounting position of.

Preferably, a height adjusting wedge is provided on the surface of the board 5, and the upper surfaces of the plurality of sets of board 5 are all located on the same horizontal plane.

Preferably, three self-propelled module transport vehicles 4 are arranged below the first float 61 of the wind power generation platform 6, and four self-propelled module transport vehicles 4 are arranged below the second float 62 and the third float 63, respectively. Is placed.

Further, for the self-propelled module carrier, it is determined that a total of 212 SPMT axes and 11 PPU power heads are selected according to the shape characteristics and the weight distribution curve of the wind power generation platform 6.

Further, three connection platforms 2 are installed. One cooperates with the first float 61, and the other two are symmetrically arranged on both sides of the semi-submersible barge 1 and cooperate with the second float 62 and the third float 63.

Preferably, the photoelectric sensor arranged on the berthing side of the semi-submersible cargo ship 1 cooperates with the reflector of the pier 3, the photoelectric sensor is electrically connected to the control circuit of the self-propelled module carrier 4, and the photoelectric sensor is , It is detected whether or not the relative heights between the semi-submersible carrier 1 and the pier 3 are the same, and the operation of the self-propelled module carrier 4 is controlled by the feedback result.

Further, the photoelectric sensor detects the relative height between the semi-submersible platform 1 and the wharf 3 and feeds it back to the control room of the semi-submersible platform 1 to control the ascent or sinking of the semi-submersible platform 1. Adjusts the height.

Example 2
After the semi-submersible platform 1 is towed to the wharf 3, three loading platforms will be added to both sides of the semi-submersible platform. The wind power generation platform 6 has a total length of 78.95 m, a total width of 91.16 m, a width of the semi-submersible barge 1 drawn out to the outside water surface is only 60 m, and the self-propelled module carrier 4 rolls on and rolls off. To meet the requirements for loading and unloading the wind power generation platform 6, a loading platform 1 (length 20 m, width 7 m) has been added to the port side of the semi-submersible carrier, and a carrier 2 (length 20 m) has been added to the starboard side of the semi-submersible carrier. , Width 7m) and loading platform 3 (length 13.3m, width 7m) are added, welding is required to be completely melted into the connection between the frame of the loading platform and the outer plate on the side, and UT inspection is performed. After the loading platform is attached, the starboard side of the semi-submersible carrier 1 is placed at a predetermined position on the wharf 3 according to the pre-drawn positioning line on the wharf 3, and six φ56 mm nylon ropes with a tensile strength of 48 KN are used. Then, they are moored at the six bollards of Wharf 3, respectively.

The wind power platform 6 is assembled at the slideway assembly site. After being assembled and meeting the shipping requirements, it is transported from the construction site to the front of the wharf through the self-propelled module carrier 4, ready for roll-on / roll-off work, and the height of the tide is roll-on / roll-off. Roll-on / roll-off shipping is performed after the requirements are met.

Three rows of SPMT modular trailers 4 are placed below the first float 61, and four rows of self-propelled module transport vehicles 4 are placed below the second and third floats 62 and 63, respectively, and the wind power generation platform 6 and The own weight of the touring is 5600t, 212 axes and 11 PPUs are arranged in the SPMT, the total weight of the axis wheel is 1031t, the total load of the axis wheel is 40t * 212 = 8480t, and the SPMT axis line. The maximum load is 31.6t / axis, the underground flow load is 9.29t / m ² , and the load factor is 31.6 / 40 = 79%. The explanation of the calculation procedure for grouping is as follows. First, a plurality of self-propelled module transport vehicles are divided into three hydraulic groups, where group A (first float) has 84 axes, group B (third float) has 64 axes, and group C (second float). Float) is a 64-axis line. The description of transport stability is as follows. From a safety standpoint, stability is an important issue in the transportation of ultra-wide and ultra-high components. To ensure stability, loosen the wheelbase of the trailer, i.e. use a horizontal combination, and research has shown that it is more beneficial to adopt a three-point support system for the hydraulic suspension circuit, the wind power platform 6 The center of gravity is within the load area of the self-propelled module carrier 4, and the accuracy of the load can be ensured by monitoring the pressure gauge of the hydraulic system. Stability angle tgα = L / H = 13624/15186 = 0.897, α = 41.9 °, according to industry standards, it is safe when the stability angle> 7 °, and this work situation is based on the lateral stability calculation chart. The stability angle of is 41.9 °, which confirms that it is safe.

The wind power platform 6 is located on the mounting deck of the semi-submersible platform 1, the center position of the platform is located on the FR30-180 ribs, and its horizontal center overlaps the centerline of the semi-submersible platform 1. The wind power generation platform 6 needs to place a total of 150 board 5s at predetermined positions on the mounting deck of the semi-submersible platform, and the wedges provided on the board 5 are used to adjust the height and roll on. -Precisely place wedges in place and level them in advance before roll-off shipping.

The specification selection of the stepping stone will be explained. The height of the anti-collision protective side at the front of the pier 3 is 500 mm, and in this project, seven steel plates (6 m * 3 m * 30 mm) were selected to form a cross deck, and the wheelbase of the SPMT axis was 1400 mm. Therefore, only one axis receives a force in the region of 500 mm, and the strength of the steel sheet is calculated based on the concentrated load of the total load of 32 tons of the shaft. The material is Q235, and the bending normal stress σmax = 102.9N / mm ² <bending resistance set value f: 141N / mm ² , the maximum shear stress of the support portion τmax = 2.16N / mm ² <shear resistance design value fv: 94N / mm ² . Relative intermediate span deflection v = L / 686 <deflection control value [v]: L / 250, so the steel plate (30 mm) meets the requirements for using the roll-on / roll-off platform at the front of Wharf 3 for this project. be able to.

According to the roll-on / roll-off plan, a self-propelled module carrier to be shipped near the entrance will be arranged in advance, 212 axes and 11 PPUs will be joined to the 11-row trailer according to the vehicle allocation diagram, and it is necessary. Perform a debug check. Using a remote control, the 11-row trailers joined are controlled and lowered, and run to the bottom of the wind power platform 6 and reach the specified position accurately, and the parallel cable between the PPUs of the 11-row trailers. Connect, control the trailer using the remote control, raise the trailer platform, push up the wind power platform 6 to reach the specified running height (about 1500 mm), and use one remote control to mount the SPMT modular trailer 4. Transport to the front of the pier 3. Before the wind power generation platform 6 is loaded on and off the roll-on, the semi-submersible platform 1 is pre-injected with an appropriate amount of ballast water according to the actual measurement conditions of the tide table and the wharf 3, and the mounting deck of the semi-submersible platform is the wharf 3. When it is 50 to 100 mm higher than the surface of the self-propelled module carrier, roll-on / roll-off loading of the self-propelled module carrier is started. During the loading process, the semi-submersible carrier 1 adjusts the load in the front-rear and left-right directions, keeps the mounting deck of the semi-submersible carrier 1 and the pier 3 at the same height, and the loading deck of the semi-submersible carrier 1 is 100 mm from the pier 3. When it becomes lower than that, the self-propelled module carrier stops, adjusts the load in the front-back and left-right directions, and when combined with the dual action of the rising tide, the mounting deck rises and becomes ready for loading. The traveling module carrier will board the ship again until the end of the second round. Repeat the above procedure until all self-propelled module carriers board the transport vessel and reach the designated position. The self-propelled module carrier is lowered and the shipping operation is completed until the wind power generation platform 6 reaches the pre-arranged board 5.

The above examples are only preferred technical solutions of the present invention and are not considered to be restrictions on the present invention, and the features in the examples and examples in the present application may be arbitrarily combined in the absence of conflict. .. The scope of protection of the present invention includes the technical solution described in the scope of the utility model registration claim and the equivalent alternative means including the technical features in the technical solution described in the scope of the utility model registration claim. Should be done. That is, equivalent alternative improvements within this range are also included within the protection scope of the present invention.

In the figure, the notation of the drawing is as follows. Semi-submersible platform 1, connection platform 2, wharf 3, self-propelled module carrier 4, board wood 5, wind power generation platform 6, 1st float 61, 2nd float 62, 3rd float 63.

Claims (5)

Multiple connection platforms (2) including a semi-submersible barge (1) moored to the pier (3) via a cable and fitted to the side plate of the semi-submersible barge (1) in contact with the quay of the pier. Is connected, and the stepping platform provided on the surface of each connection platform (2) is fitted with the self-propelled module carrier (4) arranged below the wind power generation platform (6), and a plurality of sets of the self-propelled self are connected. A roll-on / roll-off transfer system for a floating offshore wind turbine, wherein the traveling module carrier (4) is provided at a position corresponding to the plurality of connection platforms (2). On the surface of the semi-submersible barge (1), three sets of support mechanisms each composed of a plurality of boards (5) are provided, and the three sets of support mechanisms are each of the wind power generation platform (6). The roll-on / roll-off transfer system for a floating offshore wind turbine according to claim 1, wherein the three floats are located below a predetermined mounting position. The floating offshore wind turbine according to claim 2, wherein a height adjusting wedge is provided on the surface of the board (5), and the upper surfaces of the plurality of boards (5) are all located on the same horizontal plane. Roll-on / roll-off transfer system for power generation platforms. The three self-propelled module transport vehicles (4) are arranged below the first float (61) of the wind power generation platform (6), and below the second float (62) and the third float (63), respectively. The roll-on / roll-off transfer system for a floating offshore wind turbine according to claim 1, wherein four self-propelled module carriers (4) are arranged. The photoelectric sensor arranged on the berthing side of the semi-submersible barge (1) cooperates with the reflector of the pier, and the photoelectric sensor is electrically connected to the control circuit of the self-propelled module carrier (4). The roll-on / roll-off transfer system for a floating offshore wind turbine according to claim 1, wherein the roll-on / roll-off transfer system is provided.

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