Energy storage offshore wind power plant and method of use thereof

Abstract

The application discloses a kind of energy storage offshore wind power generation equipment and its using method, it is related to offshore wind power generation technical field, including at least one tower, the top of the topmost tower is installed generator set, the top of generator set input shaft is connected with main shaft through coupling, and the top of main shaft is installed three-blade vertical paddle group;The top of the topmost tower is installed with segmented shaft rotating support cylinder coaxial with main shaft, and four-column C-shaped bracket is fixedly installed on the lower part of the left and right outer walls of segmented shaft rotating support cylinder. The application solves the problem of insufficient lubrication caused by the decrease of lubricant viscosity in high temperature environment, enhances the corrosion resistance and mechanical stability of offshore power generation equipment, and significantly reduces the need for frequent manual maintenance of offshore power generation due to continuous and automatic lubrication, significantly improves the maintainability and operating economy of the equipment in summer.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of offshore wind power generation, in particular to an energy storage type offshore wind power generation equipment and a use method thereof. BACKGROUND

[0002] Hainan is an island area with abundant and stable sea wind resources. Vertical axis wind turbines can effectively utilize this resource, promote the development of clean energy, reduce dependence on traditional energy, and promote environmental protection. Unlike traditional horizontal axis wind turbines, the rotating shaft of the vertical axis wind turbine is perpendicular to the ground, and the blades rotate around the central shaft. This structure allows it to adapt to changing wind directions and maintain consistent and stable power generation. Its structure includes a rotor, a stator, a generator, and a support system. The overall design is convenient for maintaining stability in complex offshore environments and simplifying maintenance. Key components such as generators are usually located at the bottom of the equipment, making it easy to repair. When working, wind drives the blades to rotate, converting wind energy into mechanical energy. Then, the generator converts mechanical energy into electrical energy through electromagnetic induction. Finally, the processed electrical energy is transmitted to the power grid through submarine cables, with zero carbon emissions, providing Hainan with a reliable and green power source.

[0003] A flexible sail type vertical axis offshore wind power generation equipment as disclosed in the application publication No. CN119755017A includes a foundation, a power generation device, a tower drum, and a sail assembly. The power generation device is fixed on the top of the foundation, and the rotating shaft of the power generation device is fixedly connected with the bottom of the tower drum. The tower drum is perpendicular to the foundation, and the tower drum is provided with a plurality of sail assemblies in the circumferential direction. The sail assembly has an unfolded state and a retracted state. When the sail assembly is in the unfolded state, it is driven to rotate by the wind force, and the rotation of the tower drum drives the power generation device to generate electricity. The vertical axis wind power generation scheme is adopted. The sail assembly is in the unfolded state under normal wind conditions and in the retracted state under extreme weather such as typhoon. The sail can be flexibly recovered under extreme weather. It can be seen that the existing vertical axis offshore wind power generation technology and equipment operation method are basically the same, that is, the wind drives the blades to rotate, and the generator rotor generates electrical energy. In this process, the vertical axis offshore wind power generation equipment is in a vertical main shaft rotating state. However, Hainan has high temperature all year round, especially in summer, and the surface temperature of the equipment can reach more than 60℃. At this time, the temperature of the main shaft and the bearing also rises, the viscosity of the lubricating oil or grease decreases, the oil film is difficult to form, and the lubrication effect is insufficient. In this case, the bearing is prone to dry friction or boundary lubrication, the friction coefficient increases, the wear intensifies, and even the bearing fails prematurely, affecting the normal operation and service life of the equipment. In addition, the maintenance and repair work of offshore wind turbines, especially those far from the shore, depends heavily on expensive special ships and suitable sea conditions, which is extremely difficult to access, and it is difficult to complete the lubricating oil or grease supplement work between the main shaft and the bearing in time. SUMMARY

[0004] The energy storage type offshore wind power generation device and the use method thereof, the offshore wind power drives the rotation of the main shaft and the input shaft of the generator set through the three-blade vertical paddle assembly, generates power through the generator set and supplies the power grid, the segmented shaft rotating support cylinder at the top of the tower is coaxial with the main shaft in the process, and the main shaft is protected by using the segmented shaft rotating support cylinder, the rotating power of the main shaft is transmitted to the double-helix grease extrusion assembly through the double-zone gear transmission assembly, the double-helix grease extrusion assembly extrudes the lubricating grease into the upper and lower grease distributors and supplies the segmented shaft rotating support cylinder, and the lubricating grease is uniformly attached to the outer periphery of the main shaft and the bearing body and continuously forms ink, so that the problems in the background art are solved.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: an energy storage type offshore wind power generation device, comprising at least one tower, a generator set installed at the top of the uppermost tower, a main shaft connected to the input shaft of the generator set through a shaft coupling, and a three-blade vertical paddle assembly installed at the top of the main shaft.

[0006] The top of the uppermost tower is provided with a segmented shaft rotating support cylinder coaxial with the main shaft, four-column C-shaped brackets are fixedly installed on the lower parts of the left and right outer walls of the segmented shaft rotating support cylinder, an outer sealing shell is installed at the top of the tower outside the segmented shaft rotating support cylinder, the upper surface of the outer sealing shell is welded to the lower surface of the four-column C-shaped bracket, bearing bodies are installed at both ends of the inside of the segmented shaft rotating support cylinder, and the main shaft is located in the inner ring of the bearing body.

[0007] A double-helix grease extrusion assembly is installed at the top of the four-column C-shaped bracket, a grease upper and lower distributor is installed at the outlet end of the double-helix grease extrusion assembly, the grease upper and lower distributor is used to transport lubricating grease to the upper and lower parts of the segmented shaft rotating support cylinder, a double-zone gear transmission assembly is installed in the inside of the outer sealing shell, and the double-zone gear transmission assembly is used to receive the rotating power from the main shaft and supply the double-helix grease extrusion assemblies in the mirror image symmetric structure.

[0008] Preferably, the segmented shaft rotating support cylinder comprises a bottom cylinder fixed at the center of the top of the tower, a belly pipe, a top cylinder and a double-flange corrugated cylinder which are sequentially stacked and flange bolted at the top of the bottom cylinder, and the top end of the main shaft penetrates to the outside of the double-flange corrugated cylinder upward.

[0009] Preferably, the inside of the bottom cylinder and the top cylinder is integrally formed with an annular pedestal, and the bearing body is installed at the top of the annular pedestal.

[0010] Preferably, a rectangular convex pipe is welded and installed on one side of the outer wall of the belly pipe, and a baffle is bolted and installed at the opening position away from the belly pipe.

[0011] Preferably, the three-blade vertical paddle assembly comprises two three-pronged arms fixed at one end of the surface of the main shaft and a paddle unit commonly bolted at the other end of the two three-pronged arms away from the central axis of the main shaft, and the extension direction of the paddle unit is parallel to the extension direction of the central axis of the main shaft.

[0012] Preferably, the double-zone gear transmission assembly comprises a ring-shaped base fixed at the top end of the tower, an inner ring gear rotatably mounted on the top end of the ring-shaped base, and a primary gear fixed at the lower end of the main shaft, one side of the top end of the tower is rotatably mounted with a tertiary gear shaft, the top end of the tower between the tertiary gear shaft and the primary gear is rotatably mounted with a secondary gear shaft, the primary gear, the secondary gear shaft and the tertiary gear shaft are sequentially meshed, and the inner ring gear is meshed with the tertiary gear shaft.

[0013] Preferably, the double-helix fat extrusion assembly comprises a support shell fixed at one side of the top end of the four-column C-shaped support, a double-pipe type flow guide box mounted on the outer wall of the side of the support shell away from the bottom cylinder, and a storage tank fixedly mounted at the top end of the double-pipe type flow guide box, the bottom end of the support shell is fixed with a Y-shaped vertical plate, the Y-shaped vertical plate is rotatably mounted with a driving bevel gear shaft through a bearing seat on the side of the double-pipe type flow guide box, the lower end of the driving bevel gear shaft is fixed with a gear disc meshed with the inner ring gear, the inside of the double-pipe type flow guide box is rotatably mounted with a worm screw shaft at the front and rear positions, one end of the worm screw shaft extends to the inside of the support shell, and a gear transmission structure for power connection is mounted between the end portions of the two worm screw shafts in the inside of the support shell, one end of one of the worm screw shafts is fixed with a driven bevel gear meshed with the upper end of the driving bevel gear shaft.

[0014] Preferably, an electric control valve is mounted at the center position of the bottom of the storage tank.

[0015] Preferably, the fat liquid up-down flow divider comprises a T-shaped fat outlet head mounted on the outer wall of one side of the double-pipe type flow guide box, a double-outlet manifold mounted at the lower end of the T-shaped fat outlet head, and a first fine flow guide pipe and a second fine flow guide pipe mounted on the outer wall of one side of the double-outlet manifold, the first fine flow guide pipe and the second fine flow guide pipe are both hard pipes, the inlet of the T-shaped fat outlet head is in communication with the outlet of the double-pipe type flow guide box, one end of the first fine flow guide pipe away from the double-outlet manifold extends to the inside of the bottom cylinder, and one end of the second fine flow guide pipe away from the double-outlet manifold extends to the inside of the top cylinder.

[0016] The application also provides a use method of the energy storage type offshore wind power generation equipment, which comprises the following steps:

[0017] S101: The sea wind blows the three-blade vertical paddle assembly, so that the three-blade vertical paddle assembly rotates around the central axis of the main shaft, the main shaft transmits the obtained mechanical rotating power to the inside of the generator set, the rotor in the generator set rotates at high speed in the magnetic field of the stator, and mechanical energy is efficiently converted into electrical energy through electromagnetic induction principle, and the finally generated electrical energy is processed through internal voltage transformation and rectification, etc. and transmitted to the shore through the submarine cable and connected to the power grid;

[0018] S102: When the main shaft rotates, the double-zone gear transmission assembly converts the high-speed rotation of the main shaft into the required rotating speed and torque suitable for the double-helix grease extrusion assembly, and drives the left and right mirror-symmetric double-helix grease extrusion assemblies respectively, the double-helix grease extrusion assembly generates strong pushing force after working, and stably and continuously extrudes the dense lubricating grease pre-filled in the inside of the double-helix grease extrusion assembly;

[0019] S103: The extruded lubricating grease enters the grease liquid up-down distributor, the grease liquid up-down distributor reasonably and accurately distributes the lubricating grease from a single oil way according to the needs of the upper and lower bearing sections, ensures the balance of the supply of each lubricating point, and then the lubricating grease after the distribution is accurately injected into the upper and lower bearing points in the inside of the segmented shaft rotating support cylinder through the preset conveying channel;

[0020] S104: Under the pushing pressure, the lubricating grease is forced to be conveyed into the tiny gap between the outer circumferential surface of the main shaft and the bearing body, and the continuous supply of the lubricating grease can uniformly adhere to the metal surface and form a continuous and strong protective oil film.

[0021] Compared with the prior art, the energy storage type offshore wind power generation device and the use method thereof have the beneficial effects that: the energy storage type offshore wind power generation device and the use method thereof are provided with a tower, a generator set, a segmented shaft rotating support cylinder, a main shaft, a three-blade vertical paddle assembly, and a double-zone gear transmission assembly, a double-helix grease extrusion assembly, a grease liquid up-down distributor and the like, which are cooperated with each other, offshore wind drives the input shaft of the main shaft and the generator set to rotate through the three-blade vertical paddle assembly, electricity is generated by the generator set and supplied to the power grid, in the process, the segmented shaft rotating support cylinder at the top of the tower is coaxially arranged with the main shaft, and the main shaft is protected by the segmented shaft rotating support cylinder, the rotating power of the main shaft is transmitted to the left and right mirror-symmetric double-helix grease extrusion assemblies through the double-zone gear transmission assembly, the double-helix grease extrusion assembly extrudes the lubricating grease into the grease liquid up-down distributor and supplies the segmented shaft rotating support cylinder, and the lubricating grease is uniformly adhered to the outer circumferential surface of the main shaft and the bearing body and continuously forms an oil film, which meets the special marine environment and climate characteristics of Hainan, realizes effective protection and continuous lubrication of the main shaft and the bearing body, solves the problem of insufficient lubrication caused by the viscosity reduction of the lubricant in the high temperature environment, enhances the corrosion resistance and mechanical stability of the offshore power generation equipment, and at the same time, since the lubrication is continuous and automatic, the demand for frequent manual maintenance of offshore power generation which is expensive and high-risk is greatly reduced, the maintainability and operation economy of the equipment in summer are significantly improved.

[0022] Wherein the rotation power of the main shaft is transmitted to the double-helix grease extrusion assembly through the double-zone gear transmission assembly, not only realizing efficient transmission of power, but also prompting the double-helix grease extrusion assembly to uniformly extrude the lubricating grease into the upper and lower grease distributors, ensuring that the lubricating grease can be continuously and uniformly supplied to the segmented shaft rotating support cylinder, and the continuous supply mechanism of the lubricating grease effectively solves the lubrication problem faced by offshore wind power equipment, especially in the high-temperature environment of Hainan, the lubricating grease is prone to reduce in viscosity due to temperature rise, resulting in a decrease in lubrication effect, through the continuous extrusion of the double-helix grease extrusion assembly, a stable and uniform oil film is formed on the outer circumferential surface of the main shaft and the bearing body, greatly reducing friction and wear, and improving the operation efficiency and reliability of the equipment; secondly, the combination of the segmented shaft rotating support cylinder and the lubricating grease supply system effectively isolates the corrosion of marine salt mist and moisture on the main shaft and the bearing, delaying the aging process of the equipment, and the corrosion of salt and moisture in the marine environment on mechanical parts is one of the important inducements for equipment failure, and continuous and uniform lubricating grease coverage not only provides mechanical lubrication function, but also forms a protective film to prevent salt mist from corroding the metal surface, improving the corrosion resistance of the equipment;

[0023] Finally, the traditional lubrication maintenance requires technicians to regularly and frequently go to remote positions, perform complex manual grease filling operations in narrow and high-altitude environments, while the self-lubricating system integrated by the scheme is a completely internal circulation automatic system, which uses the running power of the wind turbine itself to drive the lubrication process, realizes uninterrupted self-maintenance, so that the most critical and frequent maintenance task does not need to be arranged for the staff to go to sea, thereby eliminating a large number of plans, scheduling, sea-going risks and labor costs related thereto. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a schematic view of the front structure of the application;

[0025] Figure 2 It is a schematic view of the front structure of the application; Figure One ;

[0026] Figure 3 It is a schematic view of the front structure of the application;

[0027] Figure 4 It is a schematic view of the front structure of the application;

[0028] Figure 5 It is a schematic view of the front structure of the application; Figure Two ;

[0029] Figure 6 It is a schematic view of the front structure of the application; Figure One ;

[0030] Figure 7 The three-dimensional structure diagram of the embodiment two of the application Figure Two ;

[0031] Figure 8 The three-dimensional structure diagram of the embodiment two of the application

[0032] Figure 9 The three-dimensional structure diagram of the embodiment two of the application Figure One ;

[0033] Figure 10 The three-dimensional structure diagram of the embodiment two of the application Figure Two ;

[0034] Figure 11 The three-dimensional structure diagram of the embodiment three of the application Figure One ;

[0035] Figure 12 The three-dimensional structure diagram of the embodiment three of the application

[0036] Figure 13 The three-dimensional structure diagram of the embodiment three of the application

[0037] Figure 14 The three-dimensional structure diagram of the embodiment three of the application Figure Two .

[0038] In the figure: 1, tower; 2, generator set; 3, outer sealing shell; 4, segmented shaft rotating support cylinder; 401, bottom cylinder; 402, belly pipe; 403, top cylinder; 404, double-flange corrugated cylinder; 405, rectangular convex pipe; 406, baffle; 407, annular support; 408, bearing body; 5, main shaft; 6, three-blade vertical paddle assembly; 601, three-pronged arm; 602, paddle monomer; 7, four-column C-shaped support; 8, double-helix grease extrusion assembly; 801, support shell; 802, double-pipe type flow guide box; 803, storage box; 8031, electric control valve; 804, Y-shaped vertical plate; 805, driving bevel gear shaft; 806, gear disc; 807, auger shaft; 808, gear transmission structure; 809, driven bevel gear; 9, grease up-and-down flow divider; 901, T-shaped grease outlet head; 902, double-outlet manifold; 903, fine flow guide pipe one; 904, fine flow guide pipe two; 10, double-zone gear transmission assembly; 1001, annular bottom table; 1002, inner ring gear; 1003, three-stage gear shaft; 1004, two-stage gear shaft; 1005, one-stage gear. DETAILED DESCRIPTION

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0040] Example 1, by Figures 1 to 7 The invention comprises at least one tower section 1, a generator set 2 mounted on the top of the uppermost tower section 1, a main shaft 5 connected to the top of the input shaft of the generator set 2 via a coupling, and a three-lobe vertical blade assembly 6 mounted on the top of the main shaft 5. The generator set 2 is the core component for converting wind energy into electrical energy. The rotation of the main shaft 5 drives the electromagnetic system inside the generator to generate current, achieving efficient conversion of mechanical energy into electrical energy.

[0041] Tower 1, as the supporting structure of the entire wind turbine generator set, undertakes the important task of supporting and fixing the equipment. It ensures the stable positioning of components such as generator set 2, main shaft 5, and three-bladed vertical blade assembly 6 in the harsh marine environment, and also effectively resists the impact of wind and waves, ensuring equipment safety.

[0042] The top of the uppermost tower section 1 is equipped with a segmented shaft rotation support cylinder 4 that is coaxial with the main shaft 5. Four-column C-port brackets 7 are fixedly installed on the lower left and right outer walls of the segmented shaft rotation support cylinder 4. An outer sealing shell 3 is installed on the top of the tower 1 outside the segmented shaft rotation support cylinder 4. The upper surface of the outer sealing shell 3 is welded to the lower surface of the four-column C-port bracket 7. Bearing bodies 408 are installed at both ends inside the segmented shaft rotation support cylinder 4. The main shaft 5 is located in the inner ring of the bearing body 408.

[0043] The top of the four-column C-port bracket 7 is equipped with a double-helix grease extrusion assembly 8, and the outlet end of the double-helix grease extrusion assembly 8 is equipped with a grease upper and lower distributor 9. The grease upper and lower distributor 9 is used to deliver lubricating grease to the upper and lower parts of the segmented shaft rotation support cylinder 4. The inner part of the outer sealing shell 3 is equipped with a dual-zone gear transmission assembly 10. The dual-zone gear transmission assembly 10 is used to receive the rotational power from the main shaft 5 and supply it to the two double-helix grease extrusion assemblies 8 with mirror symmetry structure.

[0044] The segmented shaft rotating support cylinder 4 comprises a bottom cylinder 401 fixed at the center of the top end of the tower 1, a belly pipe 402, a top cylinder 403 and a double-flange corrugated cylinder 404 successively stacked at the top end of the bottom cylinder 401 and connected by flange bolts, the top end of the main shaft 5 penetrates to the outside of the double-flange corrugated cylinder 404, the inside of the bottom cylinder 401 and the top cylinder 403 are integrally formed with annular support tables 407, the bearing body 408 is installed at the top end of the annular support table 407, the bottom cylinder 401, the belly pipe 402, the top cylinder 403 and the double-flange corrugated cylinder 404 are connected by bolts, the segmented design not only facilitates the installation and maintenance of the equipment, but also effectively disperses mechanical stress, reduces vibration and wear, and the segmented shaft rotating support cylinder 4 ensures the stability of the main shaft 5 during rotation, avoids damage caused by eccentricity or vibration, improves the reliability of the equipment, and the segmented shaft rotating support cylinder 4 also isolates the main shaft 5 from the harsh marine environment of high salt and high humidity, effectively protecting the main shaft 5;

[0045] Because the inside of the top cylinder 403 and the bottom cylinder 401 is integrally formed with an annular support table 407 for installing the bearing body 408, the grease delivered by the grease upper and lower distributor 9 is located above the bearing body 408, so that the lubricating grease adheres to the main shaft 5 and the bearing body 408;

[0046] The used old grease is slowly pushed forward by the new grease and finally stays at the bottom of the segmented shaft rotating support cylinder 4, and the staff can install an electric or manual discharge valve on the lower end outer wall, and use the discharge valve to discharge the used old grease;

[0047] A rectangular protruding pipe 405 is welded and installed on one side of the outer wall of the belly pipe 402, and a baffle 406 is bolted and installed at the opening position away from the belly pipe 402;

[0048] The three-blade vertical paddle assembly 6 comprises two three-pronged arms 601 fixed on one end of the surface of the main shaft 5 and a paddle monomer 602 bolted and installed on the ends of the two three-pronged arms 601 away from the central axis of the main shaft 5, the extension direction of the paddle monomer 602 is parallel to the extension direction of the central axis of the main shaft 5, the three-blade vertical paddle assembly 6 with double layers can adapt to variable wind direction, maintain stable rotating speed and power output, and the structure of the three paddle monomers 602 optimizes the utilization efficiency of wind energy.

[0049] The use method of the energy storage type offshore wind power generation equipment of the embodiment is as follows:

[0050] S101: The sea wind blows the three-blade vertical paddle assembly 6, so that the three-blade vertical paddle assembly 6 rotates around the central axis of the main shaft 5, the main shaft 5 transmits the obtained mechanical rotating power to the inside of the generator set 2, the rotor in the generator set 2 rotates at high speed in the stator magnetic field, and through the principle of electromagnetic induction, the mechanical energy is efficiently converted into electrical energy, and the finally generated electrical energy is processed through internal voltage transformation and rectification, etc., transmitted to the shore through the submarine cable and connected to the grid;

[0051] S102: When the main shaft 5 rotates, the double-zone gear transmission assembly 10 converts the high-speed rotation of the main shaft 5 into the required rotating speed and torque suitable for the double-helix grease extrusion assembly 8, and drives the left and right mirror-symmetric double-helix grease extrusion assemblies 8 respectively. After the double-helix grease extrusion assembly 8 works, it generates a strong pushing force to stably and continuously extrude the dense lubricating grease pre-filled in its own interior;

[0052] S103: The extruded lubricating grease enters the grease liquid up-down distributor 9, which reasonably and accurately distributes the lubricating grease from a single oil way according to the needs of the upper and lower bearing sections, ensuring balanced supply of each lubrication point, and then the lubricating grease after distribution is accurately injected into the upper and lower bearing points in the segmented shaft rotating support cylinder 4 through the preset conveying channel;

[0053] S104: Under the pushing pressure, the lubricating grease is forced to be conveyed into the tiny gap between the outer peripheral surface of the main shaft 5 and the bearing body 408, and the continuous supply of the lubricating grease can uniformly adhere to the metal surface, forming a continuous and strong protective oil film.

[0054] In example two, on the basis of example one, Figure 8 , Figure 9 and Figure 10 are given, the double-zone gear transmission assembly 10 includes an annular base 1001 fixed at the top end of the tower 1, an inner ring gear 1002 rotatably installed on the top edge of the annular base 1001, and a primary gear 1005 fixed at the lower end position of the main shaft 5. A tertiary gear shaft 1003 is rotatably installed on one side of the top end of the tower 1, a secondary gear shaft 1004 is rotatably installed on the top end of the tower 1 between the tertiary gear shaft 1003 and the primary gear 1005, and the primary gear 1005, the secondary gear shaft 1004, and the tertiary gear shaft 1003 are sequentially meshed. The inner ring gear 1002 and the tertiary gear shaft 1003 are meshed. When the main shaft 5 is driven to rotate by the offshore wind power, the main shaft 5 transmits the rotating power to the secondary gear shaft 1004 and the tertiary gear shaft 1003 in sequence through the primary gear 1005, and then the tertiary gear shaft 1003 drives the inner ring gear 1002 to rotate. In this process, the annular base 1001 assists the rotation of the inner ring gear 1002, thereby providing rotating power to the double-helix grease extrusion assembly 8 from the inner ring gear 1002;

[0055] The double-zone gear transmission assembly 10 extracts part of the mechanical energy from the continuously rotating main shaft 5 and converts it into a speed and torque suitable for driving the double-spiral grease extrusion assembly 8, ensuring that the power source of the double-spiral grease extrusion assembly 8 is completely autonomous and does not require an external power supply, with high reliability.

[0056] In Example Three, based on Example Two, Figure 11 , Figure 12 , Figure 13 and Figure 14 Example Three, based on Example Two, The double-spiral grease extrusion assembly 8 includes a support shell 801 fixed to one side of the top end of the four-column C-shaped support 7, a double-pipe type flow guide box 802 installed on the outer wall of the side of the support shell 801 away from the bottom cylinder 401, and a storage tank 803 fixedly installed at the top end of the double-pipe type flow guide box 802. The bottom end of the support shell 801 is fixed with a Y-shaped vertical plate 804, and the side of the Y-shaped vertical plate 804 close to the outer wall of the double-pipe type flow guide box 802 is rotatably installed with a driving bevel gear shaft 805 through a bearing seat. The lower end of the driving bevel gear shaft 805 is fixed with a gear disc 806 engaged with the inner gear ring 1002. The inside of the double-pipe type flow guide box 802 is rotatably installed with auger shafts 807 at the front and rear positions. One end of the auger shafts 807 extends into the inside of the support shell 801. Between the end portions of the two auger shafts 807 inside the support shell 801, a gear transmission structure 808 for power connection is installed. One end of one of the auger shafts 807 is fixed with a driven bevel gear 809, which is engaged with the upper end of the driving bevel gear shaft 805. When the double-spiral grease extrusion assembly 8 is working, the driving bevel gear shaft 805 is rotated by the inner gear ring 1002 through the gear disc 806, and then the upper end of the primary gear 1005 directly drives the rotation of the driven bevel gear 809 and one of the auger shafts 807. At this time, the other auger shaft 807 will also rotate in the opposite direction synchronously under the connection of the gear transmission structure 808, and then the lubricating grease from the storage tank 803 enters the double-pipe type flow guide box 802. The two auger shafts 807 continuously send the lubricating grease into the grease liquid up-down distributor 9 by using the two auger shafts 807. The mirror image arrangement of the two auger shafts 807 generates strong and continuous pushing force through rotation, which can stably extrude the dense lubricating grease from the double-pipe type flow guide box 802, overcoming the problem of grease becoming thin under high temperature or the cavitation problem easily produced by traditional pumping, ensuring the continuity and stability of grease supply;

[0057] The center position of the bottom of the storage tank 803 is installed with an electric control valve 8031. The staff can open the electric control valve 8031 to make the lubricating grease in the storage tank 803 enter the double-pipe type flow guide box 802 through the electric control valve 8031, and use the electric control valve 8031 to control whether the lubricating grease is supplied;

[0058] The electric control valve 8031 can be connected with the remote control of the wind turbine generator set through the remote control module. The remote control terminal sends a control instruction, such as "start lubrication" or "adjust flow", which is transmitted to the local controller of the specific wind turbine through the optical fiber or wireless network inside the wind farm. The instruction is sent to the remote control module directly connected with the electric control valve 8031, which is a remote I / O station or a special valve controller installed in the cabin or tower. After the electric control valve 8031 receives the driving signal, the internal micro motor starts to work, driving the valve core to produce precise linear or rotary motion, thereby completing the physical action of opening, closing or proportional adjustment, and realizing the precise control of the medium flow path.

[0059] The grease up-and-down flow divider 9 includes a T-shaped grease outlet head 901 installed on one side of the outer wall of the double-tube type flow guide box 802, a double-outlet manifold 902 installed at the lower end of the T-shaped grease outlet head 901, and a fine flow guide pipe one 903 and a fine flow guide pipe two 904 installed on one side of the outer wall of the double-outlet manifold 902. The fine flow guide pipe one 903 and the fine flow guide pipe two 904 are both hard pipes. The inlet of the T-shaped grease outlet head 901 is connected with the outlet of the double-tube type flow guide box 802. The end of the fine flow guide pipe one 903 away from the double-outlet manifold 902 extends to the inside of the bottom cylinder 401. The end of the fine flow guide pipe two 904 away from the double-outlet manifold 902 extends to the inside of the top cylinder 403. The lubricating grease is discharged from the double-tube type flow guide box 802 and enters the T-shaped grease outlet head 901 and the double-outlet manifold 902. At this time, the lubricating grease is divided by the fine flow guide pipe one 903 and the fine flow guide pipe two 904, and then enters the bottom cylinder 401 and the top cylinder 403 and adheres to the main shaft 5 and the bearing body 408, thereby forming a uniform and firm oil film on the friction surface and achieving the best lubrication effect.

[0060] In this embodiment, the sea breeze first blows the three-bladed vertical propeller assembly 6, causing it to rotate around the central axis of the main shaft 5. This rotational kinetic energy directly drives the main shaft 5, which is rigidly connected to the three-bladed vertical propeller assembly 6, to begin rotating. The main shaft 5 passes through the interior of the segmented shaft-rotation support cylinder 4 at the top of the tower 1. The segmented shaft-rotation support cylinder 4 not only provides robust rotational support for the main shaft but also forms a protective shell, isolating the main shaft 5 from the harsh marine environment with high salinity and humidity. The lower end of the main shaft 5 is connected to the input shaft of the generator set 2, transferring the mechanical rotation energy it receives. The rotational power is transmitted to the generator set 2, where the rotor rotates at high speed in the stator magnetic field. Through the principle of electromagnetic induction, mechanical energy is efficiently converted into electrical energy. The generated electrical energy is then processed through internal transformers and rectifiers before being transmitted to the shore via submarine cables for grid connection, supplying clean electricity to the power grid. When the main shaft 5 rotates, a portion of its power is extracted through the connected dual-position gear transmission assembly 10. The dual-position gear transmission assembly 10 converts the high-speed rotation of the main shaft 5 into the speed and torque required by the twin-helix extrusion assembly 8, and drives the left and right mirror-symmetrically arranged... The twin-helix grease extrusion assembly 8 generates a powerful pushing force after operation, stably and continuously extruding the dense grease pre-filled inside itself. The extruded grease enters the grease distributor 9, which rationally and precisely distributes the grease from the single oil circuit according to the needs of the upper and lower bearing sections, ensuring a balanced supply to each lubrication point. The distributed grease is then precisely injected into the upper and lower bearing positions inside the segmented shaft rotation support cylinder 4 through a preset delivery channel. Under the pushing pressure, the grease is forced to be transported to the main shaft. In the tiny gap between the outer circumference of spindle 5 and the bearing body 408, the continuous supply of grease can, on the one hand, evenly adhere to the metal surface, forming a continuous and robust protective oil film that separates the spindle from the bearing, avoiding dry friction and wear caused by direct metal-to-metal contact. On the other hand, this constantly renewed oil film also plays a good role in cooling and sealing, carrying away the heat generated by friction and effectively preventing the intrusion of external humid air and salt, thus completing a complete automatic lubrication cycle without external power, ensuring the long-term reliable operation of spindle 5 in the high-temperature environment of Hainan summer.

[0061] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and illustrative figures, it should be apparent that the scope of the present application is not limited to these specific embodiments.

[0062] While the embodiments of the application have been shown and described herein, it will be understood by those skilled in the art that many changes, modifications, substitutions and alterations to these embodiments can be made without departing from the principles and spirits of the application, and it is intended that the scope of the application be limited solely by the scope of the appended claims and the equivalents thereof.

Claims

1. An energy storage type offshore wind power generation device, comprising at least one tower (1), a generator set (2) installed on the top of the uppermost tower (1), a main shaft (5) connected to the input shaft of the generator set (2) through a shaft coupling, and a three-blade vertical paddle assembly (6) installed on the top of the main shaft (5): characterized in that The top of the uppermost tower (1) is provided with a segmented shaft rotating support cylinder (4) coaxial with the main shaft (5), four-column C-shaped brackets (7) are fixedly installed on the lower part of the left and right outer walls of the segmented shaft rotating support cylinder (4), an outer sealing shell (3) is installed on the top of the tower (1) outside the segmented shaft rotating support cylinder (4), the upper surface of the outer sealing shell (3) and the lower surface of the four-column C-shaped bracket (7) are welded with each other, bearing bodies (408) are installed at both ends inside the segmented shaft rotating support cylinder (4), and the main shaft (5) is located in the inner ring of the bearing body (408); The top of the four-column C-shaped bracket (7) is provided with a double-helix grease extrusion assembly (8), the outlet end of the double-helix grease extrusion assembly (8) is provided with a grease up-and-down distributor (9) for delivering lubricating grease to the upper and lower parts of the segmented shaft rotating support cylinder (4), a double-zone gear transmission assembly (10) is installed inside the outer sealing shell (3), and the double-zone gear transmission assembly (10) is used for receiving rotary power from the main shaft (5) and supplying the rotary power to two double-helix grease extrusion assemblies (8) in a mirror-symmetrical structure; The segmented shaft rotating support cylinder (4) comprises a bottom cylinder (401) fixed at the center of the top of the tower (1), a belly pipe (402), a top cylinder (403), and a double-flange corrugated cylinder (404) which are sequentially stacked and flange-bolted at the top of the bottom cylinder (401), and the top of the main shaft (5) penetrates upward to the outside of the double-flange corrugated cylinder (404). The double-zone gear transmission assembly (10) comprises a ring-shaped base (1001) fixed at the top end of the tower (1), an inner gear ring (1002) rotatably mounted on the top end of the ring-shaped base (1001), and a primary gear (1005) fixed at the lower end position of the main shaft (5), one side of the top end of the tower (1) is rotatably mounted with a tertiary gear shaft (1003), the top end of the tower (1) between the tertiary gear shaft (1003) and the primary gear (1005) is rotatably mounted with a secondary gear shaft (1004), the primary gear (1005), the secondary gear shaft (1004), and the tertiary gear shaft (1003) are sequentially meshed, and the inner gear ring (1002) is meshed with the tertiary gear shaft (1003).

2. An energy-storing offshore wind power plant according to claim 1, characterized in that: The double-spiral extrusion assembly (8) comprises a support shell (801) fixed on one side of the top end of the four-column C-shaped support (7), a double-pipe type flow guide box (802) mounted on the outer wall of the side of the support shell (801) away from the bottom cylinder (401), and a storage box (803) fixedly mounted at the top end of the double-pipe type flow guide box (802), the bottom end of the support shell (801) is fixed with a Y-shaped vertical plate (804), the outer wall of the side of the Y-shaped vertical plate (804) close to the double-pipe type flow guide box (802) is rotatably mounted with a driving bevel gear shaft (805) through a bearing seat, the lower end of the driving bevel gear shaft (805) is fixed with a gear disc (806) meshed with the inner gear ring (1002), the inside of the double-pipe type flow guide box (802) is rotatably mounted with auger shafts (807) at the front and rear positions, one end of the auger shaft (807) extends into the inside of the support shell (801), a gear transmission structure (808) for power connection is mounted between the end portions of the two auger shafts (807) in the inside of the support shell (801), and one end of one of the auger shafts (807) is fixed with a driven bevel gear (809) meshed with the upper end of the driving bevel gear shaft (805).

3. An energy-storing offshore wind power plant according to claim 2, characterized in that: The inside of the bottom cylinder (401) and the top cylinder (403) is integrally formed with a ring-shaped supporting table (407), and the bearing body (408) is mounted at the top end of the ring-shaped supporting table (407).

4. An energy-storing offshore wind power plant according to claim 3, characterized in that: A rectangular convex pipe (405) is welded and mounted on the outer wall of one side of the belly pipe (402), and a baffle (406) is bolted and mounted at the opening position of the end of the rectangular convex pipe (405) away from the belly pipe (402).

5. An energy-storing offshore wind power plant according to claim 4, characterized in that: The three-leaf vertical paddle assembly (6) comprises two three-pronged arms (601) fixed at one end of the surface of the main shaft (5), and a paddle monomer (602) bolted and mounted at the ends of the two three-pronged arms (601) away from the central axis of the main shaft (5), and the extension direction of the paddle monomer (602) is parallel to the extension direction of the central axis of the main shaft (5). An electric control valve (8031) is mounted at the center position of the bottom of the storage box (803).

6. An energy-storing offshore wind power plant according to claim 5, characterized in that: The fat liquid up and down flow distributor (9) comprises a T-shaped fat outlet head (901) mounted on one side of the outer wall of the double-pipe type flow guide box (802), a double-outlet manifold (902) mounted at the lower end of the T-shaped fat outlet head (901), and a fine flow guide pipe one (903) and a fine flow guide pipe two (904) mounted on one side of the outer wall of the double-outlet manifold (902), wherein the fine flow guide pipe one (903) and the fine flow guide pipe two (904) are both hard pipes, the inlet of the T-shaped fat outlet head (901) is in communication with the outlet of the double-pipe type flow guide box (802), one end of the fine flow guide pipe one (903) away from the double-outlet manifold (902) extends to the inside of the bottom cylinder (401), and one end of the fine flow guide pipe two (904) away from the double-outlet manifold (902) extends to the inside of the top cylinder (403).

7. A method of using an energy-storing offshore wind power plant comprising an energy-storing offshore wind power plant according to any one of claims 1-6, characterized in that: The method comprises the following steps: S101: The sea wind blows the three-blade vertical paddle assembly (6), so that the three-blade vertical paddle assembly (6) rotates around the central axis of the main shaft (5), the main shaft (5) transmits the obtained mechanical rotating power to the inside of the generator set (2), the rotor in the generator set (2) rotates at high speed in the stator magnetic field, and mechanical energy is efficiently converted into electrical energy through electromagnetic induction principle, and finally the generated electrical energy is subjected to internal voltage transformation and rectification treatment, transmitted to the shore through the submarine cable, and connected to the grid; S102: When the main shaft (5) rotates, the double-zone gear transmission assembly (10) converts the high-speed rotation of the main shaft (5) into the required rotating speed and torque of the double-helix fat extrusion assembly (8), and drives the left and right mirror-symmetric arranged double-helix fat extrusion assemblies (8) respectively, the double-helix fat extrusion assembly (8) generates a pushing force after working, and stably and continuously extrudes the dense lubricating grease previously filled in the inside of the double-helix fat extrusion assembly (8); S103: The extruded lubricating grease enters the fat liquid up and down flow distributor (9), the fat liquid up and down flow distributor (9) reasonably and accurately distributes the lubricating grease from a single oil way according to the needs of the upper and lower bearing sections, ensures the balance of the supply of each lubrication point, and then the lubricating grease after the distribution is accurately injected into the upper and lower bearing points in the inside of the sectional shaft rotating support cylinder (4) through the preset conveying channel; S104: Under the action of the pushing pressure, the lubricating grease is forced to be conveyed into the tiny gap between the outer circumferential surface of the main shaft (5) and the bearing body (408), and the continuous supply of the lubricating grease can uniformly adhere to the metal surface, forming a continuous and strong protective oil film.

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