Emergency power supply system based on multi-tripod type offshore wind turbine foundation

Abstract

The invention relates to the technical field of offshore platform emergency power supply, and discloses an emergency power supply system based on a multi-tripod type offshore wind turbine foundation. The emergency power supply system comprises a fan foundation assembly, an electrical assembly and a water guide and drainage assembly. A middle shaft barrel of the fan foundation assembly is connected with the top end of a pipe pile through an inclined supporting pipe, a horizontal supporting pipe and a connecting sleeve. The electrical assembly comprises emergency power generation equipment and power supply equipment, the emergency power generation equipment is arranged in the horizontal supporting pipe and suitable for generating power through seawater entering the horizontal supporting pipe through the water inlet and outlet, and the power supply equipment is arranged on the middle shaft barrel and electrically connected with the emergency power generation equipment. The water guiding and draining assembly is arranged in the draught fan foundation assembly and used for guiding water flow or draining seawater in the pipe pile. Seawater is used for power generation, cost is low, obtaining is easy, and the emergency power supply requirement of an offshore wind plant when the wind generating set stops can be met. The main parts are arranged in the internal space of the multi-tripod type offshore wind turbine foundation, and the space of an outer platform and the like cannot be additionally occupied.

Description

Technical Field

[0001] The present invention relates to the technical field of emergency power supply for offshore platforms, and in particular to an emergency power supply system based on a multi-legged offshore wind turbine foundation. Background Art

[0002] Offshore wind power generation is a clean energy technology that uses offshore wind resources to generate electricity. The multi-pod offshore wind turbine foundation is a commonly used wind turbine foundation, which has a clear force transmission path, strong stability, and wide application. The multi-pod offshore wind turbine foundation includes: a central axis cylinder, diagonal bracing pipes, horizontal bracing pipes, connecting sleeves, and multiple steel pipe piles (generally not less than three), and multiple steel pipe piles are dispersedly arranged with the central axis cylinder as the center. Taking the tripod wind turbine foundation as an example, the three steel pipe piles are arranged in an equilateral triangle and are located at three vertices respectively, and the central axis cylinder is arranged at the center of the equilateral triangle. The central axis cylinder is connected to the top of the steel pipe pile through the diagonal bracing pipe, the horizontal bracing pipe, and the connecting sleeve to complete the construction of the wind turbine foundation. The tower of the wind turbine generator set is set on the central axis cylinder to achieve connection with the wind turbine foundation to form an offshore wind power generation platform.

[0003] During the service period of an offshore wind power generation platform, the wind turbine may shut down due to human or weather factors. Human factors such as the need to maintain or repair the wind turbine, weather factors such as typhoons, cold waves, thunderstorms and other severe weather, as well as the influence of no wind or low wind, may cause the wind turbine to stop generating electricity or disconnect from the power grid. During the power outage of the wind turbine, in order to maintain the normal operation of the offshore wind power generation platform, there are still some facilities with electricity demand, such as wind turbine yaw and pitch (to adjust the wind turbine to the optimal posture to resist typhoons), fire emergency electricity, hydrological and meteorological monitoring equipment (such as anemometers, wave height meters), structural monitoring equipment, video monitoring, navigation aids (navigation safety warning lights, virtual AIS), marine communication base stations, surveying and mapping RTK base stations, etc., which requires the offshore wind power generation platform to be equipped with emergency power supply devices.

[0004] At present, offshore wind power generation platforms use battery packs or diesel generators to achieve emergency power supply. However, the amount of electricity stored in the battery pack is limited, usually only lasting for a few hours, and the size is huge; diesel generators need to take in air and emit exhaust gas. Diesel, a raw material, is not easy to replenish at sea, and the operation and maintenance cost is high. In addition, diesel generators will cause pollution and carbon emissions during use. In addition, the installation of battery packs or diesel generators will occupy the installation space of the outer platform of the multi-legged offshore wind turbine foundation. Summary of the invention

[0005] In view of this, the present invention provides an emergency power supply system based on a multi-pod offshore wind turbine foundation to solve the problem that setting up a battery pack or a diesel generator set for emergency power supply will occupy the installation space of the outer platform of the multi-pod offshore wind turbine foundation, and the battery pack has limited storage capacity, and the use of diesel power generation will cause pollution. At the same time, diesel is not easy to replenish at sea, and the operation and maintenance cost is high.

[0006] In a first aspect, the present invention provides an emergency power supply system based on a multi-pod offshore wind turbine foundation, comprising:

[0007] A fan foundation assembly, the fan foundation assembly comprising: a central axis cylinder, an oblique support pipe, a connecting sleeve, a horizontal support pipe and a pipe pile, wherein the bottom end of the central axis cylinder is provided with a water inlet and outlet, the connecting sleeve is connected to the top end of the pipe pile, one end of the oblique support pipe is connected to the central axis cylinder, and the other end is connected to the connecting sleeve, one end of the horizontal support pipe is connected to the central axis cylinder, and the other end is connected to the connecting sleeve, and the central axis cylinder, the oblique support pipe, the connecting sleeve, the horizontal support pipe and the pipe pile are internally connected;

[0008] An electrical component, the electrical component comprising: an emergency power generation device and a power supply device, the emergency power generation device is arranged inside the horizontal support pipe, the emergency power generation device is suitable for generating electricity by using seawater entering the horizontal support pipe from the water inlet and outlet, the power supply device is arranged in the central axis cylinder and is electrically connected to the emergency power generation device;

[0009] A water-guiding and drainage component is used to guide water flow or drain seawater from the pipe pile, and comprises: a pumping member, a drainage pipe and a water-guiding pipe. The pumping member is arranged in the pipe pile, the water inlet end of the drainage pipe is connected to the pumping member, and the drainage end thereof passes through the pipe pile, the connecting sleeve, and the diagonal support pipe to extend to the central axis cylinder. One end of the water-guiding pipe is located in the horizontal support pipe, on the tail water side of the emergency power generation equipment, and the other end extends into the pipe pile, and a gate is arranged on the water-guiding pipe.

[0010] Beneficial Effects

[0011] The emergency power generation equipment uses the seawater entering the horizontal support pipe from the water inlet and outlet of the central axis cylinder to generate electricity, and transmits the electric energy to the power supply equipment, which distributes the electricity to ensure the continuous operation of the emergency power generation equipment during the emergency stage. That is, in the case of a shutdown and power outage of the wind turbine, emergency power generation and power supply can be carried out through electrical components. In the non-emergency stage, the seawater can be drained away through the water guide and drainage components to prepare for the next emergency power generation equipment operation. Moreover, the working medium used for power generation is seawater, which is easy to obtain, has sufficient water volume, and is low in cost. In addition, the setting and installation of electrical components and water guide and drainage components are basically in the pipe piles, connecting sleeves, diagonal support pipes, horizontal support pipes and central axis cylinders, that is, the internal space of the multi-legged offshore wind turbine foundation is utilized, and no additional installation space of the platform outside the wind turbine foundation is occupied.

[0012] The pumping parts can also be used to pump out the seawater that enters the pipe pile after the emergency power generation equipment is used, so as to prepare for the next emergency power generation equipment operation. The seawater in the pipe pile is discharged to the central axis cylinder and the excess part is discharged into the sea through the drainage pipe, which can maximize the pressure difference of the power generation hydraulic pipeline and facilitate power generation. The water flow can be guided by setting the water guide pipe on the tail water side of the emergency power generation equipment. After setting the gate, the opening and closing of the water guide pipe and the flow rate of the water guide pipe can be controlled. This can then assist in adjusting the power generation power of the emergency power generation equipment.

[0013] In one embodiment, the connecting sleeve covers the top of the pipe pile, and the connecting sleeve and the pipe pile are connected and fixed by a gelling material.

[0014] Beneficial Effects

[0015] The central axis cylinder is connected to the pipe pile through the connecting sleeve, the diagonal support pipe and the horizontal support pipe. The connecting sleeve of this structure is sleeved on the top of the pipe pile, the connection is stable and convenient, and the pipe pile has a good supporting effect on the central axis cylinder. And the pipe pile can be connected to the internal space of the central axis cylinder through the connecting sleeve, the diagonal support pipe and the horizontal support pipe, providing more space for installing facilities or arranging pipelines.

[0016] In one embodiment, an exhaust port is provided on the connecting sleeve.

[0017] Beneficial Effects

[0018] By setting the exhaust port, the air pressure inside the pipe pile can be adjusted to ensure that the power generation components and water diversion and drainage components can work smoothly.

[0019] In an optional implementation, the water pumping member is electrically connected to the power supply device.

[0020] Beneficial Effects

[0021] In the non-emergency stage, the pumping components are powered by power supply equipment, and there is no need to equip the pumping components with additional power supply equipment.

[0022] In an optional embodiment, a hole is provided at the bottom of the pipe pile, and the hole is communicated with the pipe pile.

[0023] Beneficial Effects

[0024] Setting up a cave can increase the water storage space inside the pipe piles, preventing the water level inside the pipe piles from rising rapidly and affecting the operation of emergency power generation equipment.

[0025] In an optional embodiment, a water-proof bottom seal is provided at the bottom end of the pipe pile.

[0026] Beneficial Effects

[0027] The waterproof bottom seal improves the sealing of the pile and prevents seawater from penetrating into the pile and occupying space. The waterproof bottom seal can also serve as a working platform, providing convenience for workers in construction and operation and maintenance.

[0028] In an optional embodiment, the emergency power supply system based on the tripod-type offshore wind turbine foundation also includes an operation and maintenance channel arranged in the central axis cylinder.

[0029] Beneficial Effects

[0030] By setting up an operation and maintenance channel, it is convenient for staff to enter and carry out some operation and maintenance work.

[0031] In an optional embodiment, the emergency power supply system based on the tripod-type offshore wind turbine foundation also includes ancillary facilities arranged on the wind turbine foundation assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A schematic diagram of an emergency power supply system based on a multi-pod offshore wind turbine foundation of the present invention using a hydro-generator;

[0034] Figure 2 It is a schematic diagram of an emergency power supply system based on a multi-pod offshore wind turbine foundation according to the present invention using a water pump turbine.

[0035] Description of reference numerals:

[0036] 11. central axis cylinder, 111. water inlet and outlet, 12. oblique support pipe, 13. connecting sleeve, 131. exhaust port, 14. horizontal support pipe, 15. pipe pile, 151. water-proof bottom seal;

[0037] 21. Emergency power generation equipment, 22. Power supply equipment;

[0038] 31. Pumping parts, 32. Drain pipes, 33. Water pipes, 34. Gates, 35. Caverns;

[0039] 4. Operation and maintenance channel;

[0040] 51. Boat fender, 52. Ladder, 53. Railing;

[0041] 6. Seabed;

[0042] 7. Sea surface;

[0043] 8. Wind turbine generator sets and towers. DETAILED DESCRIPTION

[0044] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0048] During the power outage of wind turbines, in order to maintain the normal operation of offshore wind power platforms, some facilities still have electricity needs, such as wind turbine yaw and pitch control (to adjust the wind turbine to the optimal posture to resist typhoons), fire emergency electricity, hydrological and meteorological monitoring equipment (such as anemometers, wave height meters), structural monitoring equipment, video surveillance, navigation aids (navigation safety warning lights, virtual AIS), marine communication base stations, surveying and mapping RTK base stations, etc. This requires offshore wind power platforms to be equipped with emergency power supply devices.

[0049] In the related technology, a battery pack or a diesel generator is installed on the basis of a multi-pod offshore wind turbine for emergency power supply to deal with the situation of power outage of the wind turbine. The battery capacity is limited, and the battery pack is relatively large; to avoid fire caused by battery failure and to cope with the harsh environment at sea, the battery pack is generally placed in a cabin made of welded metal profiles on the outer platform, occupying a certain amount of outer platform space. Diesel generators and corresponding power transmission and transformation equipment realize power generation and supply. Diesel generators use diesel as a power source, need to take in air and emit exhaust gas, and should be placed on an outer platform; it is not easy to replenish diesel at sea, and the operation and maintenance cost is relatively high; it will cause certain pollution and carbon emissions.

[0050] In response to the above-mentioned problems existing in setting up battery packs or diesel generators for emergency power supply, the present application proposes an emergency power supply system based on a multi-pod offshore wind turbine foundation, which can reasonably utilize the original space inside the multi-pod offshore wind turbine foundation and use seawater as the working medium to generate electricity, which will not cause pollution, is easy to obtain, and has extremely low cost.

[0051] Combine the following Figure 1Describe an embodiment of the present invention. An embodiment of the present invention provides an emergency power supply system based on a multi-pod offshore wind turbine foundation, including: a wind turbine foundation assembly, an electrical assembly, and a water diversion and drainage assembly. The wind turbine foundation assembly includes: a central axis cylinder 11, an oblique support pipe 12, a connecting sleeve 13, a horizontal support pipe 14, and a pipe pile 15. A water inlet and outlet 111 is provided at the bottom end of the central axis cylinder 11. One end of the oblique support pipe 12 is connected to the central axis cylinder 11, and the other end is connected to the connecting sleeve 13; the connecting sleeve 13 is connected to the top of the pipe pile 15; one end of the horizontal support pipe 14 is connected to the central axis cylinder 11, and the other end is connected to the connecting sleeve 13; and the central axis cylinder 11, the oblique support pipe 12, the connecting sleeve 13, the horizontal support pipe 14 and the pipe pile 15 are internally connected. The electrical components include: emergency power generation equipment and power supply equipment. The emergency power generation equipment is arranged inside the horizontal support pipe. The emergency power generation equipment is suitable for generating electricity by using seawater entering the horizontal support pipe from the water inlet and outlet. The power supply equipment is arranged on the upper part of the central axis cylinder and is electrically connected to the emergency power generation equipment. The water guide and drainage assembly is used to guide the water flow or drain the seawater in the pipe pile 15. It includes: a pumping member 31, a drainage pipe 32 and a water guide pipe 33. The pumping member 31 is arranged inside the pipe pile 15. The water inlet end of the drainage pipe 32 is connected to the pumping member 31, and the drainage end thereof passes through the pipe pile 15, the connecting sleeve 13, and the diagonal support pipe 12 to extend to the central axis cylinder 11. One end of the water guide pipe 33 is located inside the horizontal support pipe 14, on the tail water side of the emergency power generation equipment 21, and the other end extends into the pipe pile 15, and a gate 34 is arranged on the water guide pipe 33.

[0052] The wind turbine foundation assembly is the original structure of the multi-leg offshore wind turbine foundation, in which an external platform is built on the central axis cylinder 11, which serves as a wind turbine construction and operation platform and a material storage site. A wind turbine generator set and a tower 8 are set on the top of the central axis cylinder 11 to generate electricity using wind resources on the ocean. Since this wind turbine foundation has multiple pipe piles 15, any number of pipe piles can be used according to demand. This embodiment uses two of the pipe piles 15. The pipe piles 15 are driven into the seabed 6, and multiple pipe piles 15 are arranged around the central axis cylinder 11. Each pipe pile 15 is connected to the central axis cylinder 11 through a diagonal support pipe 12, a connecting sleeve 13 and a horizontal support pipe 14, so that the central axis cylinder 11 is supported from multiple directions by multiple horizontal support pipes 14 and multiple pipe piles 15, so that it can be firmly located on the sea. After the wind turbine foundation is set, the pipe piles 15, the connecting sleeve 13 and the central axis cylinder 11 are partially located below the sea surface 7 and partially located above the sea surface 7. The bottom end of the central axis cylinder 11 is provided with a water inlet and outlet 111, that is, the water inlet and outlet 111 is located below the sea surface 7, so as to directly obtain seawater and allow seawater to enter the central axis cylinder 11, and a gate, a trash screen, etc. can be set at the water inlet and outlet 111. In addition, the central axis cylinder 11, the diagonal support pipe 12, the connecting sleeve 13, the horizontal support pipe 14 and the pipe pile 15 are all hollow pipes, and the connection parts are reasonably opened to communicate with each other, which is convenient for the arrangement of equipment and the laying of pipelines.

[0053] The electrical components have the functions of generating electricity and supplying electricity. The power generation function is realized by the emergency power generation equipment 21. The emergency power generation equipment 21 can be a hydro-turbine generator, which is arranged in the horizontal support pipe 14. And the position of the horizontal support pipe 14 is close to the water inlet and outlet 111, so as to directly obtain seawater from the water inlet and outlet 111. When seawater flows through, the hydro-turbine generator can convert the mechanical energy of seawater into electrical energy to realize hydroelectric power generation. Seawater enters from one end of the horizontal support pipe 14 close to the water inlet and outlet 111, and enters into the pipe pile 15 through the water guide pipe 33. Since two pipe piles 15 in the multi-leg offshore wind turbine foundation are used in this embodiment, the corresponding emergency power generation equipment 21 is also provided with two groups, that is, correspondingly, each pipe pile 15 is connected to the central axis cylinder 11 through an inclined support pipe 12 and a horizontal support pipe 14, and the emergency power generation equipment 21 is arranged in the horizontal support pipe 14. The power supply function is realized by the power supply equipment 22. The emergency power generation equipment 21 is connected to the power supply equipment 22 through a cable, and the generated electric energy is sent to the power supply equipment 22, and the power supply equipment 22 transmits the electric energy to the power-consuming equipment. Specifically, the power supply equipment 22 includes: a connected control device and a power transmission and transformation device. The electric energy generated by the emergency power generation equipment 21 is first transmitted to the control device through a cable, and then the power transmission and transformation device distributes the electric energy and supplies it to the power-consuming equipment.

[0054] In other embodiments, Figure 2 As shown, the emergency power generation equipment 21 can also be a pump turbine.

[0055] The water guide and drainage assembly drains the seawater flowing into the pipe pile 15 from the horizontal support pipe 14 in the non-emergency stage. If the seawater after the emergency power generation equipment 21 is used continues to flow into the pipe pile 15 from the water guide pipe 33 but is not discharged, the seawater in the pipe pile 15 will rise. When the water level rises to the emergency power generation equipment 21, the emergency power generation equipment 21 will not be able to continue to generate electricity. Therefore, in the non-emergency stage, the seawater needs to be drained through the water guide and drainage assembly to prepare for the next emergency power generation equipment operation.

[0056] Specifically, the pumping member 31 is preferably a pumping pump, which can pump the seawater in the pipe pile 15 into the drain pipe 32. The number of pumping members 31 can be set to one or multiple pumping members 31 can be set at intervals along the height direction of the pipe pile 15. When one pumping member 31 is set, it can be directly set on the waterproof bottom seal 151 at the bottom of the pipe pile 15. Setting multiple pumping members 31 for joint use can meet the head requirement and drain the seawater smoothly. The water inlet end of the drain pipe 32 is connected to the pumping member 31, that is, the water extracted by the pumping member 31 will be sent to the drain pipe 32, and the drainage end of the drain pipe 32 extends from the pipe pile 15 from bottom to top, and then enters the connecting sleeve 13 and the diagonal support pipe 12 and extends all the way to the central axis cylinder 11, that is, the drain pipe 32 will eventually discharge the seawater into the central axis cylinder 11. After entering the central axis cylinder 11, the seawater falls to the bottom of the central axis cylinder 11 and is used for the next power generation. The excess seawater is discharged from the central axis cylinder 11 through the water inlet and outlet 111.

[0057] Furthermore, the water pipe 33 is L-shaped, with one end located in the horizontal support pipe 14 and the other end located in the pipe pile 15, guiding seawater to flow into the pipe pile 15. The water pipe 33 is fixed by the brackets set on the horizontal support pipe 14 and the pipe pile 15. In addition, a gate 34 is set at one end of the water pipe 33 located in the pipe pile 15, and the opening and closing of the gate 34 can control whether the water pipe 33 can discharge water into the pipe pile 15. In addition, when the emergency power generation equipment 21 is a hydroelectric generator, such as Figure 1 As shown, the water pipe 33 can be extended to the middle of the pipe pile 15. However, if the emergency power generation equipment 21 is a water pump turbine, Figure 2 As shown, the water pipe 33 needs to extend to the bottom of the pipe pile 15; accordingly, the pumping member 31 and the drainage pipe 32 are omitted, and the water pipe 33 is used for drainage.

[0058] This emergency power supply system is modified based on the multi-leg offshore wind turbine foundation, and reasonably utilizes the internal space of the central axis cylinder 11, the diagonal support pipe 12, the connecting sleeve 13, the horizontal support pipe 14 and the pipe pile 15 to improve the space utilization rate. The emergency power generation equipment 21 uses seawater to generate electricity. The power generation and power supply process of the emergency power supply system is clean and pollution-free, and the seawater as the working medium is the most easily accessible resource in the ocean, and the acquisition cost is low.

[0059] In one embodiment, the connecting sleeve 13 covers the top of the pipe pile 15, and the connecting sleeve 13 and the pipe pile 15 are connected and fixed by a cementitious material.

[0060] Specifically, the axes of the central axis cylinder 11 and the pipe pile 15 are both arranged in the vertical direction, and the diagonal support tube 12 is in an inclined state, with its upper end connected to the side wall of the central axis cylinder 11 and its lower end connected to the side wall of the connecting sleeve 13. The axis of the connecting sleeve 13 is also arranged in the vertical direction. The top of the connecting sleeve 13 is partially opened, and there are rainproof and fall-proof components, the bottom is open, and the diameter is larger than the diameter of the pipe pile 15, so that the connecting sleeve 13 can be sleeved on the top of the pipe pile 15, and the connecting sleeve 13 and the pipe wall of the pipe pile 15 can be fixedly connected by a cementitious material between the two.

[0061] After the pipe pile 15 is connected to the central axis cylinder 11 through the diagonal support pipe 12, the horizontal support pipe 14 and the connecting sleeve 13, the pipe pile 15 provides a stable support for the central axis cylinder 11. At the same time, each connection is partially opened to connect the internal space of the pipe pile 15 with the internal space of the central axis cylinder 11, so as to facilitate the installation of equipment and the layout of pipelines, and a large space can be used.

[0062] In one embodiment, an exhaust port 131 is provided on the connecting sleeve, and a rainproof component is provided at the exhaust port 131 .

[0063] Specifically, the exhaust port 131 is opened on the top surface of the connecting sleeve 13, so that the air pressure in the pipe pile 15 can be adjusted during use to avoid affecting the power generation and drainage work.

[0064] In one embodiment, a waterproof bottom seal 151 is disposed at the bottom end of the pipe pile 15 .

[0065] The bottom of the pipe pile 15 is located on the seabed 6 to prevent seawater from seeping into the pipe pile 15. For this reason, a waterproof bottom seal 151 is provided at the bottom of the pipe pile 15, and the waterproof bottom seal 151 can isolate seepage. Secondly, the waterproof bottom seal 151 can also serve as a working platform for construction and maintenance of the staff, or as a supporting member to arrange some equipment.

[0066] In one embodiment, the water pumping member 31 is electrically connected to the power supply device 22 .

[0067] Since the power supply device 22 can receive electricity from the wind turbine above and the emergency power generation system, and then supply power to the outside, and the pumping component 31 needs electricity to pump water, the pumping component 31 is connected to the power supply device 22, and power is supplied to the pumping component 31 through the power supply device 22, there is no need to equip the pumping component 31 with a power supply device separately.

[0068] In one embodiment, a hole 35 is disposed at the bottom of the pipe pile 15 , and the hole 35 is communicated with the pipe pile 15 .

[0069] The provision of the cavern 35 can improve the water storage capacity of the pipe pile 15, so that the water level in the pipe pile 15 will not rise rapidly and affect the normal power generation of the emergency power generation equipment 21, thereby effectively increasing the power generation time and power generation.

[0070] In one embodiment, the emergency power supply system further includes an operation and maintenance channel 4 disposed in the central axis cylinder 11 .

[0071] The common operation and maintenance passage 4 is, for example, a ladder, through which the staff can enter and exit the central axis cylinder 11 , making it convenient for the staff to perform construction and maintenance work inside the central axis cylinder 11 .

[0072] In one embodiment, the emergency power supply system further includes auxiliary facilities disposed on the wind turbine foundation assembly.

[0073] The auxiliary facilities are some auxiliary facilities equipped for the wind turbine foundation. Specifically, the auxiliary facilities include: a fender 51 for mooring, a ladder 52 and a railing 53. The fender 51 for mooring is set on the outer wall of the pipe pile 15 to facilitate the docking of ships. The ladder 52 is set on the tripod foundation, connecting the outer platform of the tripod foundation and the pipe pile 15. The railing 53 is set on the outer platform of the tripod foundation to play a protective role.

[0074] The working process of the emergency power supply system provided in this embodiment is described below:

[0075] When a wind turbine needs to be shut down for maintenance or is shut down passively due to bad weather, emergency power supply can be provided through the emergency power supply system in order to maintain uninterrupted operation of the offshore wind power platform equipment.

[0076] In case of emergency power supply, the water inlet and outlet 111 and the gate 34 are first opened to allow seawater to enter the central axis cylinder 11, and the seawater can spread to the horizontal support pipe 14. When the seawater flows through the emergency power generation equipment 21, the emergency power generation equipment 21 can generate electricity, and then transmit the electric energy to the power supply equipment 22, which then distributes it to various power-consuming facilities.

[0077] Synchronously, when seawater flows out from the horizontal support pipe 14 and the water guide pipe 33 and enters the pipe pile 15, in the non-emergency stage, the pumping member 31 works to pump the seawater to the drain pipe 32, and then part of the seawater is discharged into the central axis cylinder 11 through the drain pipe 32, and part of the seawater is discharged into the sea from the water inlet and outlet 111, which can maximize the pressure difference of the power generation hydraulic pipeline and facilitate power generation.

[0078] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. An emergency power supply system based on a multi-pod offshore wind turbine foundation, characterized in that: include: A fan foundation assembly, the fan foundation assembly comprising: a central axis cylinder (11), an oblique support pipe (12), a connecting sleeve (13), a horizontal support pipe (14) and a pipe pile (15); a water inlet and outlet (111) is arranged at the bottom end of the central axis cylinder (11); one end of the oblique support pipe (12) is connected to the central axis cylinder (11), and the other end is connected to the connecting sleeve (13); the connecting sleeve (13) is connected to the top end of the pipe pile (15); one end of the horizontal support pipe (14) is connected to the central axis cylinder (11), and the other end is connected to the connecting sleeve (13); and the central axis cylinder (11), the oblique support pipe (12), the connecting sleeve (13), the horizontal support pipe (14) and the pipe pile (15) are internally connected; An electrical component, the electrical component comprising: an emergency power generation device (21) and a power supply device (22), the emergency power generation device (21) being arranged inside the horizontal support pipe (14), the emergency power generation device (21) being suitable for generating electricity by utilizing seawater entering the horizontal support pipe (14) from the water inlet and outlet (111), and the power supply device (22) being arranged on the central axis cylinder (11) and electrically connected to the emergency power generation device (21); A water guide and drainage assembly, the water guide and drainage assembly is used to guide water flow or drain seawater from the pipe pile (15), and comprises: a pumping member (31), a drainage pipe (32) and a water guide pipe (33); the water guide member (31) is arranged in the pipe pile (15); the water inlet end of the drainage pipe (32) is connected to the water guide member (31); the drainage end thereof passes through the pipe pile (15), the connecting sleeve (13), the diagonal support pipe (12) and extends to the central axis cylinder (11); one end of the water guide pipe (33) is located in the horizontal support pipe (14) and on the tail water side of the emergency power generation equipment (21); the other end extends into the pipe pile (15); and a gate (34) is provided on the water guide pipe (33).

2. The emergency power supply system based on a multi-pod offshore wind turbine foundation according to claim 1 is characterized in that: The connecting sleeve (13) covers the top end of the pipe pile (15), and the connecting sleeve (13) and the pipe pile (15) are connected and fixed by a gelling material.

3. The emergency power supply system based on a multi-pod offshore wind turbine foundation according to claim 2 is characterized in that: The connecting sleeve (13) is provided with an exhaust port (131).

4. The emergency power supply system based on a multi-pod offshore wind turbine foundation according to claim 1 is characterized in that: The water pumping member (31) is electrically connected to the power supply device (22).

5. The emergency power supply system based on a multi-pod offshore wind turbine foundation according to claim 1 is characterized in that: A hole (35) is provided at the bottom of the pipe pile (15), and the hole (35) is communicated with the pipe pile (15).

6. The emergency power supply system based on a multi-pod offshore wind turbine foundation according to claim 1, characterized in that: The bottom end of the pipe pile (15) is provided with a water-proof bottom seal (151).

7. The emergency power supply system based on a multi-pod offshore wind turbine foundation according to claim 1 is characterized in that: It also includes an operation and maintenance channel (4) arranged in the central axis cylinder (11).

8. The emergency power supply system based on a multi-pod offshore wind turbine foundation according to any one of claims 1 to 7, characterized in that: It also includes auxiliary facilities arranged on the wind turbine basic assembly.

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