An offshore wind turbine generator set

Abstract

The invention discloses an offshore wind turbine generator set, which relates to the technical field of offshore wind turbine generators, including an offshore wind turbine generator, wherein a radiator is arranged inside the offshore wind turbine generator, air inlet and air outlet ends of the radiator pass through the offshore wind turbine generator, an air inlet fan is installed at the air inlet end of the radiator, an exhaust fan is installed at the air outlet end of the radiator, and a dehumidification component is arranged on the side of the offshore wind turbine generator close to the air inlet fan; the humid air from the outside sea is filtered by a sponge plate, so that the air entering the radiator to provide the offshore wind turbine with exchange gas heat dissipation is dry air, so that water vapor is prevented from entering the offshore wind turbine generator, and the contact between components inside the offshore wind turbine and water vapor is reduced, which helps to avoid accidents such as short circuit and leakage of electrical equipment inside the offshore wind turbine generator, ensures the safe and stable operation of the offshore wind turbine generator, enables the offshore wind turbine generator to work efficiently, and guarantees the power generation performance.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind turbine generators, in particular to an offshore wind turbine generator set. Background Art

[0002] An offshore wind turbine is a device that converts offshore wind energy into electrical energy. In order to ensure the heat dissipation of the generator, the ventilation system will continuously introduce external air into the generator, and the generator will convert the mechanical energy of the wind into electrical energy. However, when introducing external air, water vapor will inevitably be brought in, and the ventilation system itself cannot effectively remove water vapor, which will increase the air humidity inside the generator. The ventilation system causes the air inside the generator to circulate, and the hot air and external water vapor inside the generator are constantly mixed and diffused inside, forming hot and humid air. During the circulation process, the water vapor will not condense and be discharged naturally, but will accumulate inside the generator with the flow of air, making the hot and humid state more obvious.

[0003] Hot and humid air will invade the components inside the generator casing, reduce the strength and service life of the components, affect the normal operation of the mechanical system inside the casing of the offshore wind turbine, and cause the offshore wind turbine to be unable to generate electricity stably. At the same time, water vapor will form a water film inside the casing, which will hinder the transfer of heat and reduce the heat dissipation effect. It will cause the internal temperature to rise and the generator will be unable to operate within the normal temperature range, affecting the performance of the electrical components and mechanical parts inside the offshore wind turbine and reducing the power generation efficiency. It will also accelerate the aging of materials and the wear of components, increasing the risk of internal equipment failure in offshore wind turbines.

[0004] To this end, an offshore wind turbine is proposed. Summary of the invention

[0005] The object of the present invention is to provide an offshore wind turbine generator set to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an offshore wind turbine generator set, comprising an offshore wind turbine, a radiator is arranged inside the offshore wind turbine, air inlet and air outlet ends of the radiator pass through the offshore wind turbine, an air inlet fan is installed at the air inlet end of the radiator, an exhaust fan is installed at the air outlet end of the radiator, a dehumidification component is arranged on the side of the offshore wind turbine close to the air inlet fan, the dehumidification component comprises a protective shell, the protective shell is fixedly connected to the outer wall of the side of the offshore wind turbine close to the air inlet fan, an air inlet hole is opened on the protective shell, a micro motor is installed on the side of the offshore wind turbine close to the protective shell, the protective shell is circular, the output shaft of the micro motor is located at the center of the protective shell, the air inlet hole is opened at the eccentric position of the protective shell, and the output shaft of the micro motor is fixedly connected with The sponge plate is fixedly connected to the inner wall of the protective shell with a straight water squeezing plate, and a gap is provided between the straight water squeezing plate and the guide water squeezing plate for the sponge plate to pass through, and the sponge plate will be squeezed when passing through the gap; the guide water squeezing plate is fixedly connected to the inner wall of the protective shell, and the bottom end of the protective shell is fixedly connected to a water leakage cylinder, and the bottom end of the water leakage cylinder is rotatably connected to a water control plate, and two torsion springs are connected to the rotating part between the water leakage cylinder and the water control plate, and a plurality of guide grooves are provided on the inner wall of the protective shell, and a cam is fixedly connected to the output shaft of the micro motor, and a connecting block is fixedly connected to the outer wall of the offshore wind turbine close to the protective shell, and a round-head guide rod is slidably connected to the connecting block, and a pressure block is fixedly connected to the middle part of the outer wall of the round-head guide rod, and a spring 1 is sleeved on the round-head guide rod, and the two ends of the spring 1 are respectively fixedly connected to the pressure block and the connecting block.

[0007] Furthermore, a shaking assembly is provided on the outer wall of the offshore wind turbine on the side close to the protective shell, and the shaking assembly is used to shake out impurities on the sponge plate. The shaking assembly includes a telescopic tube, and the telescopic tube is fixedly connected to the outer wall of the offshore wind turbine on the side close to the protective shell. The end of the telescopic tube connected to the offshore wind turbine is a fixed end, and the other end of the telescopic tube is a telescopic end. The telescopic end of the telescopic tube is fixedly connected with an inclined push plate. The interior of the telescopic tube is hollow, and a spring 2 is provided therein. The two ends of the spring 2 are respectively fixedly connected to the offshore wind turbine and the inclined push plate, and the side of the inclined push plate close to the sponge plate is fixedly connected with a cross push plate.

[0008] Furthermore, the air inlet hole corresponds to the position of the air inlet end of the radiator.

[0009] Furthermore, the top ends of the plurality of guide grooves are located beside the guide water squeezing plate, the bottom ends of the plurality of guide grooves are located beside the water leakage cylinder, and the guide grooves are connected to the water leakage cylinder.

[0010] Furthermore, the top end of the round-head guide rod is located on the rotation path of the cam, and the bottom end of the round-head guide rod is in contact with the upper surface of the water control plate.

[0011] Furthermore, a side of the sponge plate close to the air inlet end of the radiator is in contact with the radiator.

[0012] Furthermore, a side of the inclined push plate close to the cam is arranged as an inclined surface, and the inclined surface of the inclined push plate is located on the rotation path of the cam.

[0013] Furthermore, the straight water squeezing plate and the guide water squeezing plate are both arranged to be inclined downward.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: by filtering the moist air from the sea outside with the sponge disk, the air entering the radiator for exchange and heat dissipation is dry air, thus preventing water vapor from entering the offshore wind turbine and reducing the contact between the components inside the offshore wind turbine and water vapor, which helps to avoid accidents such as short circuit and leakage of electrical equipment inside the offshore wind turbine, ensures the safe and stable operation of the offshore wind turbine, enables the offshore wind turbine to work efficiently, and ensures the power generation performance;

[0015] By providing dry air for exchange and heat dissipation for offshore wind turbines, the dry air after moisture removal can better play a heat dissipation role and more effectively remove the heat generated during the operation of offshore wind turbines, ensuring that the internal components of offshore wind turbines remain within a suitable operating temperature range and ensuring equipment performance;

[0016] During the rotation of the sponge disc, the moisture inside the sponge disc is squeezed out and discharged in a centralized manner, ensuring that the sponge disc portion located at the air inlet position for filtering moisture for the air intake fan is always in a dry state. The always dry sponge disc can continuously provide dry air intake for the operation of the offshore wind turbine, thereby making the heat dissipation effect more stable and reliable;

[0017] By intermittently discharging the squeezed water out of the protective shell during the process of removing the water inside the sponge disc, it is possible to effectively prevent the squeezed water from remaining in the protective shell, so that the sponge disc absorbs moisture, thereby further reducing the risk of various failures caused by water vapor entering the interior of the offshore wind turbine. At the same time, the intermittent opening and closing of the water control plate can ensure that the water control plate is in a closed state when it is not necessary to remove the water, which can effectively prevent external moisture from entering the interior of the protective shell;

[0018] The sponge disc is vibrated periodically by the cross push plate so that impurities on the sponge disc are shaken off. The shaken-off impurities will fall on the guide groove, mix with the water squeezed out by the operation of the dehumidification component, gather inside the leakage barrel, and be discharged periodically. It is possible to shake off impurities while squeezing out water from the sponge disc, which can effectively prevent impurities from clogging the pores of the sponge disc, thereby ensuring that the sponge disc can continue to maintain good water absorption performance, thereby stably providing dry air intake for offshore wind turbines, maintaining a good heat dissipation and electrical insulation environment inside the offshore wind turbines, and ensuring stable operation and efficient power generation of offshore wind turbines. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the overall device of the present invention;

[0020] Figure 2 It is a vertical cross-sectional schematic diagram of the overall device of the present invention;

[0021] Figure 3 It is a transverse cross-sectional schematic diagram of the overall device of the present invention;

[0022] Figure 4 For the present invention Figure 3 The enlarged schematic diagram at A in the middle;

[0023] Figure 5 It is a vertical cross-sectional schematic diagram of the dehumidification assembly and other components of the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the sponge plate, the straight water squeezing plate, the guide water squeezing plate and other components of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure inside the protective shell of the present invention;

[0026] Figure 8 It is an exploded schematic diagram of the dehumidification component and the shake-off component of the present invention;

[0027] Fig. 9 It is an exploded schematic diagram of the sponge plate, the straight water squeezing plate, the guide water squeezing plate and other components of the present invention.

[0028] In the figure:

[0029] 11. Offshore wind turbine; 12. Radiator; 13. Intake fan; 14. Exhaust fan;

[0030] 21. Protective shell; 22. Air inlet; 23. Micro motor; 24. Spring 1; 25. Sponge plate; 26. Straight water squeezing plate; 27. Guide water squeezing plate; 28. Leakage cylinder; 29. ​​Water control plate; 210. Torsion spring; 211. Diversion groove; 212. Cam; 213. Connecting block; 214. Round head guide rod; 215. Pressing block;

[0031] 31. Telescopic tube; 32. Inclined push plate; 33. Spring 2; 34. Cross push plate. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0033] Embodiments provided by the present invention:

[0034] Example 1: Please refer to Figures 1 to 9 As shown, an offshore wind turbine generator set includes an offshore wind turbine 11. A radiator 12 is arranged inside the offshore wind turbine 11. The air inlet and air outlet ends of the radiator 12 pass through the offshore wind turbine 11. An air inlet fan 13 is installed at the air inlet end of the radiator 12, and an exhaust fan 14 is installed at the air outlet end of the radiator 12. The radiator 12 is used to dissipate heat from the internal structure of the offshore wind turbine 11.

[0035] A dehumidification component is provided on the side of the offshore wind turbine 11 close to the air intake fan 13. The dehumidification component includes a protective shell 21. The protective shell 21 is fixedly connected to the outer wall of the offshore wind turbine 11 close to the air intake fan 13. An air inlet hole 22 is provided on the protective shell 21. The air inlet hole 22 corresponds to the air intake end position of the radiator 12. A micro motor 23 is installed on the side of the offshore wind turbine 11 close to the protective shell 21. The output shaft of the micro motor 23 extends into the interior of the protective shell 21. The protective shell 21 is circular. The output shaft of the micro motor 23 is located at the center of the protective shell 21. The air inlet hole 22 is provided at an eccentric position of the protective shell 21. A sponge plate 25 is fixedly connected to the output shaft of the micro motor 23. A straight water squeezing plate 26 is fixedly connected to the inner wall of the protective shell 21. A guide water squeezing plate 27 is fixedly connected to the inner wall of the protective shell 21, a water leakage cylinder 28 is fixedly connected to the bottom end of the protective shell 21, a water control plate 29 is rotatably connected to the bottom end of the water leakage cylinder 28, two torsion springs 210 are connected to the rotating part between the water leakage cylinder 28 and the water control plate 29, a plurality of guide grooves 211 are provided on the inner wall of the protective shell 21, a cam 212 is fixedly connected to the output shaft of the micro motor 23, a connecting block 213 is fixedly connected to the outer wall of the offshore wind turbine 11 close to the protective shell 21, a round-headed guide rod 214 is slidably connected to the connecting block 213, a pressure block 215 is fixedly connected to the middle of the outer wall of the round-headed guide rod 214, a spring 24 is sleeved on the round-headed guide rod 214, and the two ends of the spring 24 are respectively fixedly connected to the pressure block 215 and the connecting block 213.

[0036] Among them: Reference Figure 7As shown, the top ends of the plurality of guide grooves 211 are located beside the guide water squeezing plate 27 , and the bottom ends of the plurality of guide grooves 211 are located beside the water leakage cylinder 28 .

[0037] Among them: Reference Figure 6 As shown, the straight squeezing plate 26 and the guide squeezing plate 27 are both squeezed and matched with the sponge plate 25. Specifically, there is a gap between the straight squeezing plate 26 and the guide squeezing plate 27. When the sponge plate 25 passes through the gap, it will be squeezed, so that the water in the sponge plate 25 is squeezed out. Figures 7 to 9 As shown, the straight water squeezing plate 26 and the guide water squeezing plate 27 are both arranged to be tilted downward, so that water can flow downward along the straight water squeezing plate 26 or the guide water squeezing plate 27. Figure 6 as well as Figure 7 As shown, the guide water squeezing plate 27 is composed of an L-shaped block and an arc block. The arc block is located at the bottom end of the L-shaped block. The curvature of the arc block is the same as the curvature of the protective shell 21. The design of the L-shaped block is conducive to guiding the flow of water. The L-shaped block guides the water to the arc block, and then the arc block and the guide groove 211 guide the water flow to the inside of the leakage tube 28.

[0038] Wherein: when the two torsion springs 210 do not produce elastic deformation, the water control plate 29 blocks the bottom end of the water leakage tube 28.

[0039] Among them: Reference Figure 5 As shown, the top end of the round-head guide rod 214 is located on the rotation path of the cam 212 , that is, the rotation of the cam 212 can squeeze the round-head guide rod 214 to move downward, and the bottom end of the round-head guide rod 214 contacts the upper surface of the water control plate 29 .

[0040] Wherein: the side of the sponge plate 25 close to the air inlet end of the radiator 12 is in contact with it.

[0041] Among them: Reference Figure 7 As shown in the positional relationship, the micro motor 23 and the sponge plate 25 both rotate counterclockwise.

[0042] When the dehumidification component is in use, during the process of the radiator 12 ventilating and cooling the interior of the offshore wind turbine 11, that is, during the rotation of the intake fan 13, the outside air enters the interior through the sponge plate 25 and the air inlet 22, and the humid air from the outside sea is filtered by the sponge plate 25, so that the air entering the radiator 12 is dry air, thereby preventing water vapor from entering the interior of the offshore wind turbine 11 and reducing the contact between the components inside the offshore wind turbine 11 and water vapor. This helps to avoid short circuits, leakages and other accidents in the electrical equipment inside the offshore wind turbine 11, ensure the safe and stable operation of the offshore wind turbine 11, and enable the offshore wind turbine 11 to work efficiently at rated voltage and current, thereby improving power generation performance.

[0043] By providing dry air for the offshore wind turbine 11 to dissipate heat through exchange of gas, the dry air after the moisture is removed can better play the role of heat dissipation, and can more effectively take away the heat generated during the operation of the offshore wind turbine 11, ensuring that the internal components of the offshore wind turbine 11 remain within a suitable operating temperature range, thereby further improving the performance of the equipment.

[0044] When the controller starts the micro motor 23, the output shaft of the micro motor 23 rotates and drives the sponge disc 25 to rotate synchronously, and then the sponge disc 25 located in the air inlet 22 area (i.e., the part of the sponge disc 25 that actually plays a dehumidifying role) rotates around the micro motor 23, and the rest of the sponge disc 25 alternately enters the air inlet 22 area, always providing dehumidification for the air inlet fan 13. When the wet sponge disc 25 area rotates to the position of the straight squeezing plate 26 and the guide squeezing plate 27, the wet sponge disc 25 is squeezed and deformed by the straight squeezing plate 26 and the guide squeezing plate 27, so that the water inside it is squeezed out. Since the straight squeezing plate 26 is located between the protective shell 21 and the sponge disc 25, the water squeezed out on one side of the straight squeezing plate 26 at this time will flow into the guide groove 211 under the action of gravity, and through the guidance of the guide groove 211, the water is collected into the leaking tube 28.

[0045] At this time, the water squeezed out on one side of the guide water squeezing plate 27 flows into the guide groove 211 under the guidance of the L-shaped block of the guide water squeezing plate 27, and is collected into the leakage tube 28. Therefore, during the rotation of the sponge plate 25, the water inside the sponge plate 25 can be squeezed out and collected centrally, ensuring that the part of the sponge plate 25 located at the air inlet 22 is always in a dry state. The always dry sponge plate 25 can continuously provide dry air intake for the operation of the offshore wind turbine 11, thereby making the heat dissipation effect more stable and reliable, so that the internal components of the offshore wind turbine 11 are always in a good temperature environment, and its performance is guaranteed to be stable.

[0046] In combination with the above, during the rotation of the output shaft of the micro motor 23, the output shaft of the micro motor 23 drives the cam 212 to rotate synchronously. When the cam 212 rotates to a position that contacts the top of the round-head guide rod 214, the cam 212 applies force downward to squeeze the round-head guide rod 214, causing the round-head guide rod 214 to slide downward. At this time, the spring 24 is compressed, and the downwardly moved round-head guide rod 214 pushes the water control plate 29 downward to rotate. At this time, the water control plate 29 rotates downward on the water leakage cylinder 28. At this time, the water control plate 29 no longer completely blocks the bottom of the water leakage cylinder 28, that is, a gap is exposed between the water control plate 29 and the water leakage cylinder 28. The gap is formed and the two torsion springs 210 are elastically deformed, so that the moisture collected inside the water leakage tube 28 in the above text will flow to the outside through the gap between the water control plate 29 and the water leakage tube 28. When the cam 212 rotates to no longer conflict with the round-head guide rod 214, under the elastic recovery action of the spring 24, the round-head guide rod 214 slides upward on the connecting block 213 and resets, so that the round-head guide rod 214 no longer applies force to the two torsion springs 210 through the water control plate 29. Under the elastic recovery action of the two torsion springs 210, the water control plate 29 rotates upward, and the water control plate 29 blocks the bottom end of the water leakage tube 28.

[0047] Furthermore, in the process of removing the moisture from the sponge plate 25, the moisture squeezed out of the sponge plate 25 can be intermittently discharged to the outside, which can effectively prevent the squeezed moisture from remaining in the protective shell 21 and causing the sponge plate 25 to absorb too much water and then enter the generator through the sponge plate 25, thereby further reducing the risk of various faults caused by water vapor entering the offshore wind turbine 11. At the same time, the intermittent opening and closing design of the water control plate 29 can ensure that when there is no need to remove moisture, the water control plate 29 is in a closed state, which can effectively prevent external moisture from entering the protective shell 21.

[0048] Embodiment 2: Since the sponge plate 25 located at the position of the air inlet 22 is directly exposed to the outside world, external impurities can easily adhere to the sponge plate 25 when air is taken in. These impurities will not only block the pores of the sponge plate 25, but also the sponge plate 25 with impurities will be squeezed when passing through the gap between the straight water squeezing plate 26 and the guide water squeezing plate 27. The impurities will damage the sponge plate 25, resulting in affecting the use effect and service life of the sponge plate 25. If there are too many impurities, these impurities may enter the interior of the offshore wind turbine 11, causing damage to the internal components and aggravating the wear between the internal components.

[0049] Reference Figure 4 as well as Figures 7 to 9As shown, in order to solve the above-mentioned problems, a shaking assembly is provided on the outer wall of the offshore wind turbine 11 on the side close to the protective shell 21, and the shaking assembly is used to shake off impurities on the sponge plate 25. The shaking assembly includes a telescopic tube 31, and the telescopic tube 31 is fixedly connected to the outer wall of the offshore wind turbine 11 on the side close to the protective shell 21. The end of the telescopic tube 31 connected to the offshore wind turbine 11 is a fixed end, and the other end of the telescopic tube 31 is a telescopic end. The telescopic end of the telescopic tube 31 is fixedly connected with an inclined push plate 32. The interior of the telescopic tube 31 is hollow, and a spring 33 is provided therein. The two ends of the spring 33 are respectively fixedly connected to the offshore wind turbine 11 and the inclined push plate 32, and the side of the inclined push plate 32 close to the sponge plate 25 is fixedly connected with a cross push plate 34.

[0050] Among them: Reference Figure 7 , Figure 8 As shown, the side of the inclined push plate 32 close to the cam 212 is set as an inclined surface, and the inclined surface of the inclined push plate 32 is located on the rotation path of the cam 212, that is, the rotation of the cam 212 can push the inclined push plate 32 to the side of the sponge plate 25.

[0051] During the rotation of the cam 212, when the cam 212 rotates to contact the inclined push plate 32, as the cam 212 continues to rotate, Figure 8 As shown, the cam 212 can push the inclined push plate 32 toward the sponge plate 25. At this time, the telescopic end of the telescopic tube 31 is extended, and the spring 2 33 is elastically stretched. When the cam 212 rotates to no longer conflict with the inclined push plate 32, the elastic contraction of the spring 2 33 makes the telescopic tube 31 and the inclined push plate 32 move in the opposite direction to reset. With the continuous rotation of the cam 212, the inclined push plate 32 can be periodically reciprocated. With the reciprocating movement of the inclined push plate 32, the inclined push plate 32 drives the cross push plate 34 to move synchronously. When the inclined push plate 32 moves toward the sponge plate 25, the cross push plate 34 conflicts with the sponge plate 25 and applies pressure, causing this part of the sponge plate 25 to vibrate.

[0052] The sponge plate 25 is periodically beaten by the cross push plate 34 so that impurities on the sponge plate 25 are shaken off. The shaken-off impurities will fall on the guide groove 211, mix with the water squeezed out by the operation of the above dehumidification component, gather into the leakage tube 28, and be discharged periodically. It can be achieved that impurities can be shaken off while squeezing out water from the sponge plate 25, which can effectively prevent impurities from clogging the pores of the sponge plate 25, thereby ensuring that the sponge plate 25 can continue to maintain good water absorption performance. In this way, dry air intake can be stably provided for the offshore wind turbine 11, and a good heat dissipation and electrical insulation environment can be maintained inside the offshore wind turbine 11, thereby ensuring the stable operation and efficient power generation of the offshore wind turbine 11, and preventing impurities from damaging the sponge plate 25.

[0053] At the same time, impurities on the sponge plate 25 are shaken off, which can effectively prevent impurities from entering the offshore wind turbine 11 and causing internal component failures of the offshore wind turbine 11, further enhancing the safety and reliability of the operation of the offshore wind turbine 11.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An offshore wind turbine generator set, comprising an offshore wind turbine (11), wherein a radiator (12) is arranged inside the offshore wind turbine (11), the air inlet and air outlet ends of the radiator (12) pass through the offshore wind turbine (11), an air inlet fan (13) is installed at the air inlet end of the radiator (12), and an exhaust fan (14) is installed at the air outlet end of the radiator (12), characterized in that: A dehumidification component is provided on a side of the offshore wind turbine (11) close to the air intake fan (13), the dehumidification component comprising a protective shell (21), the protective shell (21) being fixedly connected to an outer wall of a side of the offshore wind turbine (11) close to the air intake fan (13), an air intake hole (22) being provided on the protective shell (21), a micro motor (23) being installed on a side of the offshore wind turbine (11) close to the protective shell (21), the protective shell (21) being circular, and the micro motor (23) being provided on the protective shell (21). The output shaft of the micro motor (23) is located at the center of the protective shell (21), the air inlet (22) is opened at an eccentric position of the protective shell (21), a sponge plate (25) is fixedly connected to the output shaft of the micro motor (23), a straight water squeezing plate (26) is fixedly connected to the inner wall of the protective shell (21), a guide water squeezing plate (27) is fixedly connected to the inner wall of the protective shell (21), and a sponge plate (25) is spaced between the straight water squeezing plate (26) and the guide water squeezing plate (27). ) passes through a gap, and the sponge plate (25) will be squeezed when passing through the gap, the bottom end of the protective shell (21) is fixedly connected to a water leakage cylinder (28), the bottom end of the water leakage cylinder (28) is rotatably connected to a water control plate (29), the rotating parts of the water leakage cylinder (28) and the water control plate (29) are connected to two torsion springs (210), the inner wall of the protective shell (21) is provided with a plurality of guide grooves (211), and the output shaft of the micro motor (23) is fixedly connected to a cam (212), a connecting block (213) is fixedly connected to the outer wall of the offshore wind turbine (11) on the side close to the protective shell (21), a round-head guide rod (214) is slidably connected to the connecting block (213), a pressure block (215) is fixedly connected to the middle part of the outer wall of the round-head guide rod (214), a spring (24) is sleeved on the round-head guide rod (214), and the two ends of the spring (24) are respectively fixedly connected to the pressure block (215) and the connecting block (213).

2. An offshore wind turbine generator set according to claim 1, characterized in that: A shaking assembly is provided on the outer wall of the offshore wind turbine (11) on the side close to the protective shell (21), and the shaking assembly is used to shake out impurities on the sponge plate (25). The shaking assembly comprises a telescopic tube (31), and the telescopic tube (31) is fixedly connected to the outer wall of the offshore wind turbine (11) on the side close to the protective shell (21). One end of the telescopic tube (31) connected to the offshore wind turbine (11) is a fixed end, and the other end of the telescopic tube (31) is a telescopic end. The telescopic end of the telescopic tube (31) is fixedly connected to an inclined push plate (32). The interior of the telescopic tube (31) is hollow, and a second spring (33) is provided therein. The two ends of the second spring (33) are respectively fixedly connected to the offshore wind turbine (11) and the inclined push plate (32). The side of the inclined push plate (32) close to the sponge plate (25) is fixedly connected to a cross push plate (34).

3. An offshore wind turbine generator set according to claim 1, characterized in that: The air inlet hole (22) corresponds to the position of the air inlet end of the radiator (12).

4. An offshore wind turbine generator set according to claim 1, characterized in that: The top end of the guide groove (211) is located beside the guide water squeezing plate (27), the bottom end of the guide groove (211) is located beside the water leakage cylinder (28), and the guide groove (211) is connected to the water leakage cylinder (28).

5. An offshore wind turbine generator set according to claim 1, characterized in that: The top end of the round-head guide rod (214) is located on the rotation path of the cam (212), and the bottom end of the round-head guide rod (214) is in contact with the upper surface of the water control plate (29).

6. An offshore wind turbine generator set according to claim 1, characterized in that: The side of the sponge plate (25) close to the air inlet end of the radiator (12) is in contact with the radiator (12).

7. An offshore wind turbine generator set according to claim 2, characterized in that: A side of the inclined push plate (32) close to the cam (212) is arranged as an inclined surface, and the inclined surface of the inclined push plate (32) is located on the rotation path of the cam (212).

8. An offshore wind turbine generator set according to claim 1, characterized in that: The straight water squeezing plate (26) and the guide water squeezing plate (27) are both arranged to be inclined downward.

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