Offshore wind generating set seawater cooling system combined with jacket foundation

Abstract

The invention relates to the technical field of offshore wind power, and discloses an offshore wind generating set seawater cooling system combined with a jacket foundation. The seawater cooling system comprises a jacket, a transition connection structure and a heat exchange assembly, a first heat exchange medium is arranged in the jacket; the transition connecting structure is arranged at the top of the jacket; the heat exchange assembly comprises a heat exchanger, the heat exchanger is arranged on the transition connection structure and provided with two liquid channels, and a first heat exchange medium circulates in the first liquid channel which is connected with the jacket through a first liquid inlet pipeline and a first liquid outlet pipeline. A second heat exchange medium flows in the second liquid channel, and the second liquid channel is connected with heating equipment through a second liquid inlet pipeline and a second liquid outlet pipeline. The heating equipment is cooled through the second heat exchange medium, and the first heat exchange medium can enter the jacket to exchange heat with seawater for cooling after exchanging heat with the second heat exchange medium in the heat exchanger. The heat exchanger transmits heat to seawater through the guide pipe frame, the heat exchange area is large, the heat dissipation effect is better, and the heat dissipation efficiency is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind power generation, and in particular to a seawater cooling system for an offshore wind turbine generator set combined with a conductor frame foundation. Background Art

[0002] As one of the most abundant renewable energy sources, wind energy has become one of the key development targets of renewable energy in recent years. Compared with onshore wind energy resources, my country's offshore wind energy resources are more abundant. According to statistics, the total reserves of wind energy resources within 50m of my country's offshore are 883 million kilowatts, and the technically exploitable amount is 570 million kilowatts. Compared with onshore wind power, offshore wind power development has the advantages of saving land resources, high wind speed, and proximity to electricity load centers. Offshore wind power development has become an important direction for the development of my country's wind energy industry. With the continuous improvement of offshore wind energy resource development, offshore wind energy resources have gradually shifted from near shallow seas to transitional water depths (30-60m).

[0003] There are many heat-generating devices in offshore wind turbines, such as generators, converters, transformers, etc. These devices will continue to generate heat during operation. If the heat cannot be dissipated in time, it will cause the equipment to overheat and shut down or even malfunction. At present, these heat-generating devices are generally cooled by heat exchangers installed outside the cabin. The heat exchange type of the heat exchanger is air-water heat exchange, that is, the heat emitted by these heat-generating devices is absorbed by the coolant, and then the coolant enters the heat exchanger and is cooled by the air, and the heat is dissipated in this cycle. However, due to the large size of the heat-generating equipment and the large amount of heat emitted, the heat dissipation effect of air cooling is poor, and the heat dissipation efficiency is low. Summary of the invention

[0004] In view of this, the present invention provides a seawater cooling system for an offshore wind turbine generator set combined with a conductor frame foundation to solve the problem that the heat dissipation effect and efficiency of cooling the heat generating equipment in the offshore wind turbine generator set through an air-water heat exchanger are poor.

[0005] In a first aspect, the present invention provides a seawater cooling system for an offshore wind turbine generator set combined with a jacket foundation, comprising:

[0006] A pipe frame, wherein the pipe frame is arranged at sea and a first heat exchange medium is arranged inside the pipe frame;

[0007] A transition connection structure, wherein the transition connection structure is arranged at the top end of the conductor frame;

[0008] A heat exchange component, the heat exchange component includes: a heat exchanger, the heat exchanger is arranged on the transition connection structure, and has two liquid channels, the two connecting ports of the first liquid channel are respectively connected to the inside of the catheter frame through a first liquid inlet pipe and a first liquid outlet pipe, the first heat exchange medium flows in the first liquid channel, the two connecting ports of the second liquid channel are respectively connected to the heat generating device through a second liquid inlet pipe and a second liquid outlet pipe, and the second liquid channel flows a second heat exchange medium.

[0009] Beneficial Effects

[0010] The second heat exchange medium can absorb heat when flowing through the heat generating device, thereby cooling and dissipating the heat generating device. When the second heat exchange medium enters the second liquid channel of the heat exchanger, it can exchange heat with the first heat exchange medium in the first liquid channel. After the second heat exchange medium cools down, it can circulate to cool and dissipate the heat of the heat generating device, while the first cooling medium will enter the conduit frame and exchange heat and cool down with seawater in the conduit frame. This heat exchanger can eventually transfer the heat of the heat generating device to the seawater through the conduit frame. The conduit frame has a larger heat exchange area, better heat dissipation effect, and higher heat dissipation efficiency.

[0011] In an optional embodiment, the catheter frame includes four chords, and the four chords are arranged in pairs in a mirror-like manner. Two adjacent chords are connected by a plurality of diagonal bracing mechanisms arranged in sequence from top to bottom. The diagonal bracing mechanisms include two cross-arranged diagonal bracing rods, and the diagonal bracing rods are connected to the inside of the chords.

[0012] Beneficial Effects

[0013] The chords are connected by diagonal braces, which improves the support stability of the catheter frame and enables the first heat exchange medium to flow between the chords and the diagonal braces, thereby accelerating heat dissipation and achieving higher heat dissipation efficiency.

[0014] In an optional embodiment, a seal is provided inside the chord, and the seal is located at sea level.

[0015] Beneficial Effects

[0016] Since the conductor frame is partially located in the sea and partially located above the sea surface, only the part located in the sea can contact with the sea for heat exchange. Therefore, a seal is set in the chord so that the first heat exchange medium is located in the space below the seal so that it can better exchange heat with the sea water and achieve heat dissipation.

[0017] In an optional embodiment, the space of the chord below the sealing member is provided with the first heat exchange medium, and the first heat exchange medium is fresh water.

[0018] Beneficial Effects

[0019] Fresh water is purer and has fewer impurities, and it is less likely to corrode the chords and diagonal braces when flowing between them.

[0020] In an optional embodiment, one end of the first liquid inlet pipe extends into the bottom of the seal in one of the chords, one end of the first liquid outlet pipe extends into the bottom of the seal in another of the chords, and the two chords are arranged opposite to each other.

[0021] Beneficial Effects

[0022] The first heat exchange medium is extracted from one of the two oppositely arranged chord rods into the heat exchanger, and then the first heat exchange medium that has completed heat exchange in the heat exchanger is sent to the other chord rod, so that the first heat exchange medium has a larger circulation space between the two chord rods, and the area for heat exchange with the sea is larger, thereby cooling the first heat exchange medium.

[0023] In an optional embodiment, a first pumping member is further provided on the first liquid inlet pipe.

[0024] Beneficial Effects

[0025] Providing the first pumping member makes it easier to pump the first heat exchange medium into the heat exchanger.

[0026] In an optional embodiment, a tower is provided at the top of the transition connection structure.

[0027] Beneficial Effects

[0028] In an optional embodiment, the second liquid inlet pipe and the second liquid outlet pipe are laid along the inner wall of the tower.

[0029] Beneficial Effects

[0030] The second liquid inlet pipe and the second liquid outlet pipe are arranged along the inside of the tower, which is easy to fix and has a more neat layout.

[0031] In an optional embodiment, the second liquid outlet pipe is provided with a second water pumping member.

[0032] Beneficial Effects

[0033] The second pumping member is provided to facilitate smooth delivery of the second heat exchange medium to the heating device.

[0034] In an optional embodiment, the transition connection structure is provided with an outer platform, the outer platform is provided with a cooling cabin, and the heat exchanger is provided in the cooling cabin.

[0035] Beneficial Effects

[0036] Setting up a cooling cabin can protect the heat exchanger and prevent adverse environmental factors such as sea waves and sea breeze from affecting the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] 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.

[0038] Figure 1 A schematic diagram of a seawater cooling system for an offshore wind turbine generator set combined with a jacket foundation according to an embodiment of the present invention;

[0039] Figure 2 Operation diagram of seawater cooling system for offshore wind turbines combined with jacket foundation.

[0040] Description of reference numerals:

[0041] 1. catheter frame, 11. chord, 12. diagonal brace, 13. sealing element;

[0042] 2. Transition connection structure;

[0043] 31. heat exchanger, 32. first liquid inlet pipe, 33. first liquid outlet pipe, 34. second liquid inlet pipe, 35. second liquid outlet pipe, 36. first pumping member, 37. second pumping member;

[0044] 4. Sea level;

[0045] 5. Tower. DETAILED DESCRIPTION

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] Combine the following Figure 1 , Figure 2 , describing an embodiment of the present invention.

[0051] According to an embodiment of the present invention, on the one hand, a seawater cooling system for an offshore wind turbine generator set combined with a conductor frame foundation is provided, which is used to cool and dissipate heat from a heat generating device on an offshore wind turbine generator set. The seawater cooling system for an offshore wind turbine generator set comprises: a conductor frame 1, a transition connection structure 2 and a heat exchange component. The conductor frame 1 is arranged at sea, and a first heat exchange medium is arranged inside the conductor frame 1. The transition connection structure 2 is arranged at the top of the conductor frame 1. The heat exchange component comprises: a heat exchanger 31, which is arranged on the transition connection structure 2, and has two liquid channels, and the two connecting ports of the first liquid channel are respectively connected to the inside of the conductor frame 1 through a first liquid inlet pipe 32 and a first liquid outlet pipe 33, and the first heat exchange medium flows in the first liquid channel, and the two connecting ports of the second liquid channel are respectively connected to the heat generating device through a second liquid inlet pipe 34 and a second liquid outlet pipe 35, and the second liquid channel flows a second heat exchange medium.

[0052] The jacket 1 is the basic supporting member of the offshore wind turbine generator set, which has the characteristics of strong structure and strong bearing capacity, and can adapt to the complex marine climate working environment, such as storms, waves, currents, marine biological erosion, ice, earthquakes, etc. The transition connection structure 2 is the transition connection member between the jacket 1 and the tower 5, that is, the tower 5, the transition connection mechanism and the jacket 1 are connected in sequence. The tower 5 is provided with various equipment, such as some heat generating equipment such as generators, converters, transformers, etc.

[0053] The path for the first heat exchange medium in the seawater cooling system of the offshore wind turbine generator set to circulate is the first heat exchange loop, and the path for the second heat exchange medium to circulate is the second heat exchange loop. In the second heat exchange loop, the second heat exchange medium flows through each heat generating device in sequence from the second liquid outlet pipe 35. The initial temperature of the second heat exchange medium in the second liquid outlet pipe 35 is relatively low. When flowing through the heat generating device, it can absorb the heat emitted by the heat generating device to cool and dissipate the heat for the heat generating device, while the temperature of the second heat exchange medium itself will increase due to the absorption of heat. After the second heat exchange medium flows through the heat generating device, it returns to the second liquid flow channel in the heat exchanger 31 through the second liquid inlet pipe 34. In the first heat exchange loop, the first heat exchange medium enters the first liquid flow channel in the heat exchanger 31 from the conduit frame 1 through the first liquid inlet pipe 32. The high-temperature second heat exchange medium will exchange heat with the low-temperature first heat exchange medium. The second heat exchange medium cools down and cools the heat generating device again through the second liquid outlet pipe 35, while the heated first heat exchange medium enters the conduit frame 1 through the first liquid outlet pipe 33. The first heat exchange medium cools down by exchanging heat with seawater through the tube wall of the tube frame 1. After cooling down, it enters the first liquid flow channel of the heat exchanger 31 through the first liquid inlet pipe 32 again to exchange heat with the second heat exchange medium in the second liquid flow channel. The first heat exchange loop and the second heat exchange loop continuously operate to form a circulating cooling system that can continuously dissipate heat from the heat generating equipment.

[0054] The conductor frame 1 is set in the sea, so the first heat exchange medium can exchange heat with seawater in the conductor frame 1 for cooling. The conductor frame 1 is large in size and has a larger heat exchange area, which can improve the heat exchange efficiency, thereby improving the heat dissipation performance of the heating equipment. Moreover, the first heat exchange medium is set in the conductor frame 1, which reasonably utilizes the internal space of the conductor frame 1 and will not cause a significant impact on the original offshore wind turbine generator structure. The first heat exchange loop and the second heat exchange loop are also closed circulation loops to avoid interference and pollution of the system by marine biological pollution, and will not cause pollution and damage to the marine environment.

[0055] In one embodiment, the catheter frame 1 includes four chords 11, and the four chords 11 are arranged in pairs in a mirror image. Two adjacent chords 11 are connected by a plurality of diagonal bracing mechanisms arranged in sequence from top to bottom. The diagonal bracing mechanisms include two cross-arranged diagonal bracing rods 12, and the diagonal bracing rods 12 are connected to the inside of the chords 11.

[0056] This embodiment adopts a four-legged jacket 1, that is, the jacket 1 is provided with four chords 11, each chord 11 is inclined, and the jacket 1 formed by the two chords 11 is approximately a quadrangular pyramid with a small top size and a large bottom size. In addition, each chord 11 is a variable diameter rod, that is, the lower diameter of the chord 11 is large and the upper diameter is small. Each chord 11 is also arranged on a leg pile fixed to the seabed, so that the jacket 1 can stand stably in the sea.

[0057] Two adjacent chords 11 are connected by a diagonal brace mechanism to improve the connection strength of the pipe frame 1. Two diagonal brace rods 12 in the diagonal brace mechanism are cross-arranged to form an approximate "X" shape. Since the chords 11 are all inclined, the corresponding diagonal brace mechanism gradually increases in size from top to bottom.

[0058] The chord 11 and the diagonal struts 12 are both steel components, and the interior of each chord 11 is hollow, and the interior of each diagonal strut 12 is also hollow, and the two adjacent chords 11 at both ends of the diagonal strut 12 are connected, so that the chord 11 and the diagonal struts 12 are connected, and the first heat exchange medium can flow in the chord 11 and the diagonal struts 12.

[0059] Usually, the wall thickness of the chord 11 is greater than that of the diagonal strut 12, so the thermal conductivity and heat exchange efficiency of the diagonal strut 12 are higher than those of the chord 11. Connecting the chord 11 and the diagonal strut 12 internally allows the first heat exchange medium to flow more freely and has a larger heat exchange area.

[0060] In other embodiments, the catheter rack 1 may also be a three-legged catheter rack 1 or a catheter rack 1 with other structures.

[0061] In one embodiment, a seal 13 is disposed inside the chord 11 , and the seal 13 is located at the height of the sea level 4 .

[0062] The pipe frame 1 is arranged in the sea, with its lower part immersed in the seawater and its upper part located above the sea surface, that is, the first heat exchange medium can only exchange heat with the seawater through the portion of the pipe frame 1 located below the sea surface. Therefore, a seal 13 is arranged in each chord 11 at the height of the sea level 4, and the seal 13 can be water-tight to prevent the seawater from communicating with each other in the space above and below the seal 13.

[0063] The sealing member 13 can maximize the heat exchange between the pipe frame 1 and the seawater to reduce the temperature of the first heat exchange medium, and the heat exchange efficiency is higher.

[0064] In one embodiment, a first heat exchange medium is provided in the space below the seal 13 of the chord 11 , and the first heat exchange medium is fresh water.

[0065] The space below the seal 13 in the chord 11 is a space for storing the first heat exchange medium, and the space above the seal 13 does not allow the first heat exchange medium to enter. Correspondingly, the first heat exchange medium flows in the diagonal struts 12 located below the sea level 4, that is, the first heat exchange medium flows in the space of the entire jacket 1 located below the sea level 4. Due to the presence of the first heat exchange medium, the temperature of the jacket 1 located below the sea level 4 will be 20 to 30 degrees higher than the ambient temperature, and the surrounding area of ​​the structure naturally has a marine organism inhibition effect, which can reduce the pollution problem of marine organisms on the jacket 1 itself.

[0066] Although seawater is the most common and easiest to obtain in the ocean, it contains a lot of marine organisms and other impurities, and long-term use will cause corrosion of the pipes and heat exchangers 31. Therefore, the first heat exchange medium is preferably fresh water, which reduces the impact on the pipes and heat exchangers 31, making the cooling system more durable.

[0067] In one embodiment, one end of the first liquid inlet pipe 32 extends under the seal 13 in one chord 11 , and one end of the first liquid outlet pipe 33 extends under the seal 13 in another chord 11 , and the two chords 11 are arranged opposite to each other.

[0068] Although the conductor frame 1 is a four-leg conductor frame 1, having four chords 11, and a seal 13 is provided in each chord 11. However, in this embodiment, only one first liquid inlet pipe 32 and one first liquid outlet pipe 33 are provided. One end of the first liquid inlet pipe 32 is connected to the first liquid channel of the heat exchanger 31, and the other end extends into the lower part of the seal 13 in the chord 11 to extract the first heat exchange medium in the chord 11. One end of the first liquid outlet pipe 33 is connected to another connection port of the first liquid channel of the heat exchanger 31, and the other end extends into the lower part of the seal 13 in another chord 11 to discharge the first heat exchange medium into the chord 11, and the chord 11 where the first liquid inlet pipe 32 is located and the chord 11 where the first liquid outlet pipe 33 is located are two chords 11 arranged opposite to each other, so that the first heat exchange medium has the largest circulation space between the two chords 11, thereby utilizing the largest heat exchange area of ​​the conductor frame 1, being able to fully exchange heat with seawater, and improving the heat exchange efficiency.

[0069] In another embodiment, two adjacent chords 11 may be selected, that is, one of them is provided with the first liquid inlet pipe 32 and the other is provided with the first liquid outlet pipe 33 .

[0070] In another embodiment, the first liquid inlet pipes 32 may be disposed on two of the chords 11 of the four-legged conductor frame 1 , and the first liquid outlet pipes 33 may be disposed on the other two chords 11 .

[0071] In one embodiment, a first water pumping member 36 is further disposed on the first liquid inlet pipe 32 .

[0072] The first water pumping member 36 is preferably a water pump, which can be used to extract the first heat exchange medium in the chord 11 into the first liquid inlet pipe 32 .

[0073] In one embodiment, the transition connection structure 2 is provided with an outer platform, the outer platform is provided with a cooling cabin, and a heat exchanger 31 is provided in the cooling cabin.

[0074] An outer platform is generally provided at the transition connection structure 2 for placing equipment or as a construction platform. A cooling cabin equipped for the heat exchanger 31 is provided on the outer platform. The cooling cabin can prevent the heat exchanger 31 from being affected by waves, sea breeze, etc., to ensure the safe operation of the heat exchanger 31 and extend the service life of the heat exchanger 31.

[0075] In one embodiment, a tower 5 is disposed at the top of the transition connection structure 2 , and the second liquid inlet pipe 34 and the second liquid outlet pipe 35 are laid along the inner wall of the tower 5 .

[0076] The second liquid inlet pipe 34 and the second liquid outlet pipe 35 are led out from the heat exchanger 31 and need to be connected to a heating device, which is generally arranged on the tower 5. Therefore, the second liquid inlet pipe 34 and the second liquid outlet pipe 35 can be arranged along the inner wall of the tower 5, and the second liquid inlet pipe 34 and the second liquid outlet pipe 35 are fixed to the inner wall of the tower 5 through fixing parts, so that the second liquid inlet pipe 34 and the second liquid outlet pipe 35 are connected to the heat exchange device along the extension direction of the tower 5.

[0077] In one embodiment, the second liquid outlet pipe 35 is provided with a second water pumping member 37 .

[0078] The second pumping member 37 is also preferably a water pump, and the second pumping member 37 is used to pump the second heat exchange medium to the heat generating device.

[0079] The working process of the seawater cooling system for offshore wind turbine generator set provided by this embodiment is described as follows:

[0080] The second pumping member 37 pumps the second heat exchange medium to the heating device, and the second heat exchange medium absorbs the heat emitted by the heating device to reduce the temperature of the heating device, thereby achieving the purpose of cooling. The second heat exchange medium absorbs heat and heats up, and then enters the second liquid channel in the heat exchanger 31 from the second liquid inlet pipe 34. The first pumping member 36 extracts the first heat exchange medium from a chord 11 in the conductor frame 1 and enters the first liquid channel in the heat exchanger 31. The temperature of the first heat exchange medium in the first liquid channel is low, and the temperature of the second heat exchange medium in the second liquid channel is high. There is a temperature difference between the first heat exchange medium and the second heat exchange medium, and heat exchange occurs. The second heat exchange medium cools down, while the first heat exchange medium heats up. The heated first heat exchange medium returns to another chord 11 in the conductor frame 1 through the first liquid outlet pipe 33. The first heat exchange medium will flow from the chord 11 where the first liquid outlet pipe 33 is set to the chord 11 where the first liquid inlet pipe 32 is set. When flowing in the chord 11 and each diagonal support rod 12, heat exchange is carried out with seawater through the pipe wall, thereby reducing the temperature of the first heat exchange medium. The first heat exchange medium and the second heat exchange medium circulate to enable the entire cooling system to operate continuously.

[0081] 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. A seawater cooling system for an offshore wind turbine generator set combined with a jacket foundation, characterized in that: include: A pipe frame (1), the pipe frame (1) being arranged at sea, and having a first heat exchange medium arranged therein; A transition connection structure (2), wherein the transition connection structure (2) is arranged at the top end of the catheter frame (1); A heat exchange component, the heat exchange component comprising: a heat exchanger (31), the heat exchanger (31) being arranged on the transition connection structure (2), and having two liquid channels, the two connecting ports of the first liquid channel being respectively connected to the interior of the catheter frame (1) through a first liquid inlet pipe (32) and a first liquid outlet pipe (33), the first heat exchange medium flowing through the first liquid channel, the two connecting ports of the second liquid channel being respectively connected to the heat generating device through a second liquid inlet pipe (34) and a second liquid outlet pipe (35), the second liquid channel flowing through a second heat exchange medium.

2. The seawater cooling system for offshore wind turbine generator combined with a jacket foundation according to claim 1, characterized in that: The catheter frame (1) comprises four chords (11), the four chords (11) are arranged in pairs in a mirror image, and two adjacent chords (11) are connected by a plurality of diagonal bracing mechanisms arranged in sequence from top to bottom, the diagonal bracing mechanisms comprising two cross-arranged diagonal bracing rods (12), and the diagonal bracing rods (12) are connected to the inside of the chords (11).

3. The seawater cooling system for offshore wind turbine generator combined with a jacket foundation according to claim 2, characterized in that: A sealing member (13) is arranged inside the chord (11), and the sealing member (13) is located at the height of the sea level (4).

4. The seawater cooling system for offshore wind turbine generator combined with a jacket foundation according to claim 3, characterized in that: The first heat exchange medium is arranged in the space of the chord (11) below the sealing element (13), and the first heat exchange medium is fresh water.

5. The seawater cooling system for offshore wind turbine generator combined with a jacket foundation according to claim 3, characterized in that: One end of the first liquid inlet pipe (32) extends into the bottom of the sealing member (13) in one of the chord rods (11), and one end of the first liquid outlet pipe (33) extends into the bottom of the sealing member (13) in the other of the chord rods (11), and the two chord rods (11) are arranged opposite to each other.

6. The seawater cooling system for offshore wind turbine generator combined with a jacket foundation according to claim 1, characterized in that: The first liquid inlet pipe (32) is also provided with a first water pumping member (36).

7. The seawater cooling system for offshore wind turbine generator combined with a jacket foundation according to claim 1, characterized in that: A tower (5) is arranged at the top of the transition connection structure (2).

8. The seawater cooling system for offshore wind turbine generator combined with a jacket foundation according to claim 7, characterized in that: The second liquid inlet pipe (34) and the second liquid outlet pipe (35) are laid along the inner wall of the tower (5).

9. The seawater cooling system for offshore wind turbine generator combined with a jacket foundation according to claim 1, characterized in that: The second liquid outlet pipe (35) is provided with a second water pumping member (37).

10. The seawater cooling system for an offshore wind turbine generator set combined with a jacket foundation according to any one of claims 1 to 9, characterized in that: The transition connection structure (2) is provided with an outer platform, the outer platform is provided with a cooling chamber, and the heat exchanger (31) is provided in the cooling chamber.

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