CN116988938B - Wind turbine generator set based on offshore environment and application method thereof - Google Patents
Wind turbine generator set based on offshore environment and application method thereof Download PDFInfo
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- CN116988938B CN116988938B CN202311046889.2A CN202311046889A CN116988938B CN 116988938 B CN116988938 B CN 116988938B CN 202311046889 A CN202311046889 A CN 202311046889A CN 116988938 B CN116988938 B CN 116988938B
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- storage
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- 238000000034 method Methods 0.000 title claims description 31
- 238000003860 storage Methods 0.000 claims abstract description 89
- 239000013535 sea water Substances 0.000 claims abstract description 69
- 235000015170 shellfish Nutrition 0.000 claims abstract description 7
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 41
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 34
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 34
- 241001330002 Bambuseae Species 0.000 claims description 34
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 34
- 239000011425 bamboo Substances 0.000 claims description 34
- 238000003825 pressing Methods 0.000 claims description 29
- 238000001514 detection method Methods 0.000 claims description 24
- 238000010248 power generation Methods 0.000 claims description 17
- 238000005086 pumping Methods 0.000 claims description 16
- 230000001681 protective effect Effects 0.000 claims description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 238000001125 extrusion Methods 0.000 claims description 14
- 238000003466 welding Methods 0.000 claims description 11
- 241001233242 Lontra Species 0.000 claims description 4
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 241000883990 Flabellum Species 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/04—Automatic control; Regulation
- F03D7/042—Automatic control; Regulation by means of an electrical or electronic controller
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a wind turbine generator set based on an offshore environment, which comprises a supporting module and a conveying pipeline, wherein the supporting module is provided with three groups, the supporting module is used for supporting the wind turbine generator set to float on the sea, the three groups of supporting modules are arranged in an equilateral triangle, the outer surface of the supporting module is provided with a pressure detecting module, the pressure detecting module is used for detecting the stress of the supporting module to judge the inclination direction of the three groups of supporting modules, the supporting module comprises a supporting cylinder, the pressure detecting module comprises a storage plate welded on the outer surface of the supporting cylinder, the bottom of the storage plate is provided with two groups of storage boxes which are symmetrically arranged, the bottom of the storage box is provided with notches in a penetrating way, the notches are used for enabling seawater to enter the storage box, and the inside of the notches are welded with net plates. According to the invention, through the arrangement of the net plate, the probability that sharp objects and shellfish products brought by seawater enter the storage box to damage the pressure sensor is reduced, and the safety and the service life of the pressure sensor are improved during use.
Description
Technical Field
The invention relates to the technical field of wind turbines, in particular to a wind turbine based on an offshore environment and a use method thereof.
Background
Wind turbine generator system utilizes wind energy drive flabellum to rotate and drives the generator and generate electricity, when offshore use, is easy to shake along with beating of seawave, and stability is relatively poor, and in the in-process of using, shellfish in the sea easily climbs and attaches to the wind turbine generator system support module and live, in the past, influences the accuracy of empting detection module easily, increases the complexity of maintenance, has certain defect.
The defects of the existing wind turbine generator are as follows:
in the patent document JP4885071B2, the convenience of replacing a wind turbine in a wind turbine is mainly considered, the problem that the existing wind turbine is not used for protecting a pressure detection device when the wind turbine is used at sea is not considered, and the practicability is poor;
In the patent document KR101793059B1, the probability of shaking of the wind turbine caused by waves is mainly considered to be reduced, the stability of the installation of the wind turbine is improved, and the fact that the pressure at different positions is inconvenient to detect along with the change of sea waves and wind directions when the existing wind turbine is used at sea is not considered;
In patent document JP2016173096A, how to improve the convenience of installing a wind turbine is mainly considered, but the problem of poor balance stability of the existing wind turbine when the wind turbine is used at sea is not considered;
in the patent document KR101536241B1, it is mainly considered how to reduce stress and moment between structural members of a floating offshore wind turbine, but it is not considered that the existing wind turbine is inconvenient to change the wind direction when the wind turbine is used offshore, so as to change the direction of the wind turbine.
Disclosure of Invention
The invention aims to provide a wind turbine generator set based on an offshore environment and a use method thereof, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the wind turbine generator system based on the offshore environment comprises three groups of support modules and a conveying pipeline, wherein the support modules are used for supporting the wind turbine generator system to float on the sea, the three groups of support modules are arranged in an equilateral triangle, the conveying pipeline is arranged on the adjacent surfaces of the three groups of support modules, and the conveying pipeline is used for communicating the three groups of support modules together;
The utility model discloses a marine shellfish storage box, including support module, support module's surface mounting has pressure detection module, and pressure detection module is used for detecting the atress size of support module and judges the incline direction of three group's support module, support module includes a support section of thick bamboo, pressure detection module is including the welding putting the thing board on the support section of thick bamboo surface, put the bottom of thing board and install two sets of symmetrical arrangement's storage tank, the bottom of storage tank runs through and is provided with the notch, and the notch is used for making sea water get into in the storage tank, the inside welding of notch has the otter board, and the otter board is used for the protection, avoids the shellfish to stab into in the storage tank from the notch.
Preferably, the protective housing is installed to the roof of storage tank, and pressure sensor is installed at the roof of protective housing, and pressure sensor's input passes the bottom of protective housing and installs the connecting plate, and the surface of connecting plate is laminated mutually with the internal surface of storage tank, and symmetrical arrangement's bracing piece is installed to the bottom of connecting plate, and the bottom of bracing piece is connected with the diapire of storage tank, and the clamp plate has been placed in the internal surface laminating of storage tank, and the clamp plate is located the centre of otter board and connecting plate, and the clamp plate is used for extrudeing the connecting plate and applys or reduce pressure to pressure sensor, and the top of clamp plate runs through and is provided with symmetrical arrangement's slotted hole, and the slotted hole is located the outside of bracing piece.
Preferably, the top of two sets of support section of thick bamboo all welds the storage box, and the top welding of remaining a set of support section of thick bamboo has the base, and the suction pump is all installed to the roof of storage box and base, and the suction pipe is located the support section of thick bamboo all is installed to the input of three sets of suction pumps, and three sets of the tee bend connecting pipe is all installed to the output of suction pump, and the raceway is installed to the one end of tee bend connecting pipe, and the raceway is located one of them pipeline of group for carry the sea water in the support section of thick bamboo of oneself to in the adjacent support section of thick bamboo, and the surface mounting of raceway has electronic valve two, and the branch pipe is arranged in the support section of thick bamboo of sea water pump in the adjacent support section of thick bamboo, and the surface mounting of branch pipe has electronic valve one, pressure sensor and electronic valve one and electronic valve two electric connection.
Preferably, the wind turbine generator system main part is installed at the top of base, and wind turbine generator system main part is used for wind power generation, wind turbine generator system main part is including fixing the tower section of thick bamboo at the base top, the top of tower section of thick bamboo is provided with puts thing groove and connecting hole, and the connecting hole is located the inboard of putting the thing groove, the inside of tower section of thick bamboo is provided with puts the thing hole, the top of putting the thing hole is run through and is provided with the spread groove, and the top of spread groove is run through with the bottom of connecting hole mutually, the spread groove is used for connecting to put thing hole and connecting hole, supporting shoe one has been placed to the inside of spread groove, the inside gomphosis of putting the thing groove has supporting shoe two, the power generation box is installed at the top of supporting shoe one and supporting shoe two, and the power generation box can rotate on the tower section of thick bamboo along with the change of wind direction, the bottom of supporting shoe one is provided with the spacing hole, the inside gomphosis of spacing hole is installed the stopper, the stopper is the "concave" font structure, and the bottom and the diapire of stopper is connected with the diapire of connecting hole, the inner wall of spacing hole is provided with the draw-in groove of symmetrical arrangement, the inner wall of stopper runs through and is provided with the jack of symmetrical arrangement, and the jack that is aligned with the draw-in groove, the inner wall of card hole is arranged, the jack that is arranged opposite the jack, and the jack is arranged, the jack, and the jack is located the jack.
Preferably, the bottom area of the supporting cylinder is soaked in seawater, the supporting cylinder is made of copper alloy, the conveying pipelines are also distributed in a triangular shape, the conveying pipelines are positioned on the sea surface, and the object placing plate is in a circular ring shape;
when one group of supporting cylinders incline downwards, one group of storage boxes can continuously move downwards, seawater is gushed into the storage boxes to squeeze the pressing plates, the pressing plates are pushed to increase the pressure upwards to continuously squeeze the connecting plates, and at the moment, the pressure value detected by the pressure sensor is increased;
The inner wall welding that welds the support section of thick bamboo that has the base has the baffle, and the baffle is used for dividing into two spaces with this support section of thick bamboo, and the sea water volume in the space below the baffle is fixed, and the sea water volume above the baffle is according to the rocking of support module and is changed, and raceway and branch pipe all are located pipeline's inboard, and the raceway is located one side of branch pipe.
Preferably, the bottom wall of the power generation box is provided with a generator and a speed increasing gear box, the speed increasing gear box is positioned on one side of the generator, the input end of the generator is connected with the output end of the speed increasing gear box, the input end of the speed increasing gear box is provided with a connecting shaft, one end of the connecting shaft penetrates through the outer wall of one side of the power generation box to be provided with fan blades, wind energy is utilized to drive the fan blades to rotate, and then the speed increasing gear box drives the generator to generate power.
Preferably, the top of the power generation box is provided with an anemometer and a wind vane, the wind vane is positioned on one side of the anemometer, the anemometer is used for detecting the size of the offshore wind force, the anemometer is electrically connected with the hydraulic push rod, and the wind vane is used for detecting the wind direction.
Preferably, the bottom of pressure detection module installs and consolidates the module, and consolidates the module and be used for consolidating the support module, makes the support module can not change the position, consolidates the module and includes rings and iron chain, and two sets of symmetrical arrangement's rings are installed to the bottom of putting the thing board, and rings and storage tank interval distribution, and the surface nestification of rings has the iron chain, and the iron chain is used for pulling the support module.
Preferably, the use method of the wind turbine generator set is as follows:
S1, before the wind turbine generator is used, a fixed base is firstly built on the seabed according to the use requirement, and a supporting module is connected with the fixed base through an iron chain on a hanging ring, so that the stability of the supporting module in use is improved;
S2, after the wind turbine generator is fixed, driving the fan blades to rotate through offshore wind energy, driving the generator to generate electricity through a speed increasing gear box, transmitting electric energy to a transformer substation through a cable, and detecting the wind speed and the wind direction of the offshore wind energy through an anemograph and a wind vane;
s3, in the process of using the wind turbine generator system, seawater can flow into the storage box from the notch through the mesh plate to generate upward extrusion force, so that the pressing plate is pushed to upwards extrude the connecting plate, the connecting plate extrudes the pressure sensor in the protective box, and the fluctuation amplitude of the pressure index detected by the pressure detection modules at the bottoms of the object placing plates on the three groups of support cylinders is within an initial set threshold value;
And S4, after the fluctuation range of the pressure values detected by the pressure detection modules on each group of support cylinders exceeds an initial set threshold value, starting the water pumping module, so that the water pumping module can convey the seawater in the adjacent support cylinders, and the support cylinders at different positions can be kept balanced.
Preferably, in the step S1, the method further includes the following steps:
S11, welding and fixing the tower on the base, inserting the first supporting block and the second supporting block into the connecting hole and the storage groove according to the requirement, enabling the limiting hole to be embedded with the limiting block, starting the hydraulic push rod in the storage hole, driving the connecting block to move in the connecting groove, enabling the clamping block to be inserted into the clamping groove after passing through the jack, and then enabling the first supporting block to be fixed in the connecting hole through the embedding of the clamping block and the clamping groove;
In the step S3, the method further includes the following steps:
S31, when the sea water drives the supporting cylinders to shake and incline, one or two groups of supporting cylinders in the three groups of supporting cylinders can incline to one side at the moment, the object placing plate inclines downwards at the moment, the extrusion force of the sea water to the pressing plate is increased, the pressure index detected by the corresponding pressure sensor is also increased, the rest supporting cylinders incline to the sea surface, the object placing plate connected with the rest supporting cylinders can tilt upwards, the distance between the object placing plate and the sea surface is shortened, the extrusion force of the sea water to the pressing plate is reduced, and the pressure value detected by the pressure sensor is reduced;
In the step S4, the method further includes the following steps:
S41, in the process, the water suction pump is started, so that the water suction pipe can pump out seawater in the supporting cylinders, then the first electronic valve is opened, the branch pipe can convey the seawater into one group of supporting cylinders, the second electronic valve is opened, the seawater is conveyed into the other group of supporting cylinders through the water conveying pipe, the balance of the supporting module is improved, and the shaking frequency of the wind turbine generator is reduced.
Compared with the prior art, the invention has the beneficial effects that:
1. According to the wind turbine generator system, the supporting module, the pressure detecting module, the supporting cylinder, the storage box and the screen are arranged, in the process of using the wind turbine generator system, a part of the area of the supporting cylinder is arranged below sea water, sea water can pass through the screen and enter the storage box from the notch, the storage plate can swing along with the shaking of the supporting cylinder, then the pressure index can be detected through the pressure sensor in the storage box, in the process, the probability that sharp objects brought by sea water and shellfish products enter the storage box to damage the pressure sensor is reduced through the arrangement of the screen, and the safety and the service life of the wind turbine generator system are improved.
2. According to the invention, the protective box, the pressure sensors, the connecting plates, the supporting rods, the slotted holes and the pressing plates are arranged, when the supporting cylinders fluctuate along with sea waves, sea water can enter the storage box and generate certain extrusion force on the pressing plates, so that the pressing plates are pushed to move upwards, the pressing plates can move upwards on the surfaces of the supporting rods until the connecting plates are pushed to extrude the pressure sensors, when the supporting cylinders keep balance, the pressure index changes detected by the pressure sensors at all positions are in a normal range, and when the pressure index detected by the pressure sensors in one or more groups of storage boxes exceeds an initial set threshold value, the pumping module is started, so that sea water of different supporting cylinders can be mutually transmitted, and the stability of the supporting module is maintained.
3. According to the invention, the storage box, the base, the water suction pump, the water suction pipe, the branch pipe, the first electronic valve, the water delivery pipe and the second electronic valve are arranged, when the pressure detection module detects that the support module shakes, the water suction pump on the corresponding support cylinder is started, then the seawater in the support cylinder can be pumped out through the water suction pipe, and the first electronic valve or the second electronic valve is opened according to the requirement, so that the seawater in the support cylinder can be transmitted into the other two groups of support cylinders through the branch pipe and the water delivery pipe, and the stability of the support cylinders is maintained.
4. According to the wind turbine generator, the tower barrel, the hydraulic push rod, the connecting blocks, the clamping blocks, the first supporting block, the second supporting block and the limiting blocks are arranged, the hydraulic push rod in the storage hole is started in the windy weather, then the two groups of connecting blocks are driven to approach each other, so that the clamping blocks are not embedded with the clamping grooves and retract into the jack, then in the process of using the wind turbine generator, the power generation box and the fan blades drive the first supporting block and the second supporting block to rotate in the connecting holes and the storage groove along with the change of wind direction, the wind turbine generator can rotate along with the change of the wind direction, the probability of damaging the fan blades when the wind is overlarge is reduced, and the typhoon resistance of the wind turbine generator can be improved to a certain extent.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic plan assembly structure of the storage board and the storage box of the present invention;
FIG. 3 is a schematic plan assembly view of a pump module according to the present invention;
FIG. 4 is a schematic plan assembly view of the delivery conduit and support cylinder of the present invention;
FIG. 5 is a schematic view of an assembled structure of a storage compartment and a storage panel according to the present invention;
FIG. 6 is a schematic plan assembly view of the pressure sensor and the connection plate of the present invention;
FIG. 7 is a schematic view of an assembled structure of a platen according to the present invention;
FIG. 8 is a schematic plan assembly structure of a wind turbine main body according to the present invention;
Fig. 9 is a flowchart of the operation of the present invention.
In the figure: 1. a support module; 2. a delivery conduit; 3. a pressure detection module; 4. a water pumping module; 5. a wind turbine generator main body; 6. a power generation box; 7. a fan blade; 8. a reinforcement module; 9. a support cylinder; 10. a storage plate; 11. a storage box; 12. a screen plate; 13. a protective box; 14. a pressure sensor; 15. a connecting plate; 16. a support rod; 17. a slot hole; 18. a pressing plate; 19. a storage box; 20. a base; 21. a water pump; 22. a water pumping pipe; 23. a branch pipe; 24. an electronic valve I; 25. a water pipe; 26. an electronic valve II; 27. a partition plate; 28. a tower; 29. a storage hole; 30. a hydraulic push rod; 31. a connecting block; 32. a clamping block; 33. a first supporting block; 34. a second supporting block; 35. a limiting block; 36. a generator; 37. a speed increasing gear box; 38. an anemometer; 39. a hanging ring; 40. an iron chain.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1,2, 4, 5, 6, 7 and 9, one embodiment of the present invention is provided: the utility model provides a wind turbine generator system based on marine environment, including supporting module 1 and pressure detection module 3, supporting module 1 is provided with three groups, and supporting module 1 is used for supporting wind turbine generator system and floats at the sea, three groups of supporting module 1 are equilateral triangle and arrange, conveying pipeline 2 is all installed to the adjacent surface of three groups of supporting module 1, and conveying pipeline 2 is used for connecting three groups of supporting module 1 together, pressure detection module 3 is installed to the surface of supporting module 1, and pressure detection module 3 is used for detecting the atress size of supporting module 1 and judges the incline direction of three groups of supporting module 1, supporting module 1 includes a support section of thick bamboo 9, pressure detection module 3 includes the thing board 10 of putting of welding on the surface of supporting section of thick bamboo 9, the storage tank 11 of two sets of symmetrical arrangement is installed to the bottom of putting thing board 10, the bottom of storage tank 11 runs through and is provided with the notch, and the notch is used for making sea water get into in the storage tank 11, the inside of the notch is welded with a screen 12, the screen 12 is used for protection, shellfish is prevented from being poked into a storage box 11 from the notch, the bottom area of a supporting cylinder 9 is soaked in seawater, the supporting cylinder 9 is made of copper alloy, a conveying pipeline 2 is also distributed in a triangular shape, the conveying pipeline 2 is positioned on the sea surface, a storage plate 10 is in a ring shape, a protective box 13 is arranged on the top wall of the storage box 11, a pressure sensor 14 is arranged on the top of the protective box 13, the input end of the pressure sensor 14 passes through the bottom of the protective box 13 and is provided with a connecting plate 15, the outer surface of the connecting plate 15 is attached to the inner surface of the storage box 11, the bottom of the connecting plate 15 is provided with supporting rods 16 which are symmetrically arranged, the bottom ends of the supporting rods 16 are connected with the bottom wall of the storage box 11, a pressing plate 18 is attached to the inner surface of the storage box 11, and the pressing plate 18 is positioned between the screen 12 and the connecting plate 15, the pressing plate 18 is used for pressing the connecting plate 15 to apply or reduce pressure to the pressure sensor 14, the top of the pressing plate 18 is provided with symmetrically arranged slotted holes 17 in a penetrating mode, the slotted holes 17 are located on the outer side of the supporting rods 16, when one group of supporting cylinders 9 incline downwards, one group of storage boxes 11 can continue to move downwards, seawater is flushed into the storage boxes 11 to press the pressing plate 18, the pressing plate 18 is pushed to increase pressure upwards to continuously press the connecting plate 15, and at the moment, the pressure value detected by the pressure sensor 14 is increased.
Further, when the wind turbine generator is used, the supporting cylinders 9 can fluctuate along with fluctuation of sea waves, sea water can enter the storage box 11 from the notch through the screen 12, and a certain extrusion force is generated on the pressing plate 18, so that the pressing plate 18 is pushed to upwards extrude the connecting plate 15, the pressure sensor 14 can detect the applied pressure of the sea water, when one or more groups of supporting cylinders 9 shake and topple under the action of the sea waves, the water pumping module 4 is started after the pressure index detected by the pressure sensor 14 in the storage box 11 exceeds the preset threshold value, so that the sea water in different supporting cylinders 9 can be mutually transmitted, the stability of the supporting module 1 is maintained, and the stability of the wind turbine generator can be improved to a certain extent.
Referring to fig. 3, an embodiment of the present invention is provided: the wind turbine generator system based on offshore environment comprises a conveying pipeline 2 and a water pumping module 4, wherein the tops of two groups of supporting cylinders 9 are welded with a storage box 19, the tops of the rest group of supporting cylinders 9 are welded with a base 20, the top walls of the storage box 19 and the base 20 are respectively provided with a water pumping pump 21, the input ends of three groups of water pumping pumps 21 are respectively provided with a water pumping pipe 22, the water pumping pipes 22 are positioned in the supporting cylinders 9, the output ends of the three groups of water pumping pumps 21 are respectively provided with a three-way connecting pipe, one end of each three-way connecting pipe is provided with a water conveying pipe 25, the water conveying pipe 25 is positioned in one group of conveying pipeline 2 and used for conveying seawater in the supporting cylinder 9 to the adjacent supporting cylinder 9, the outer surface of the water conveying pipe 25 is provided with an electronic valve II 26, the branch pipe 23 is installed to the other end of tee bend connecting pipe, and branch pipe 23 is arranged in taking the sea water in the adjacent support section of thick bamboo 9 into self support section of thick bamboo 9, the surface mounting of branch pipe 23 has electronic valve one 24, suction pump 21, pressure sensor 14 electronic valve one 24 and electronic valve two 26 electric connection, the inner wall welding of the support section of thick bamboo 9 that has base 20 has baffle 27, and baffle 27 is used for separating into two spaces with this support section of thick bamboo 9, the sea water volume in the space below baffle 27 is invariable, the sea water volume above baffle 27 is according to the rocking of support module 1 change, raceway 25 and branch pipe 23 all are located the inboard of pipeline 2, raceway 25 is located one side of branch pipe 23.
Further, when the pressure detection module 3 detects that the support module 1 shakes, the storage box 19 and the water suction pump 21 in the base 20 are started at this time, then the seawater in the self-supporting cylinder 9 can be pumped out through the water suction pipe 22, and the seawater is conveyed to the inside of one group of supporting cylinders 9 through the branch pipe 23 when the first electronic valve 24 is opened, and the seawater can be conveyed to the other group of supporting cylinders 9 through the water conveying pipe 25 when the second electronic valve 26 is opened, so that the stability of the supporting cylinders 9 is kept, the balance stability is kept according to the seawater weight in the supporting cylinders 9 at different positions, and the influence of seawater surges on the use of the wind turbine can be reduced to a certain extent.
Referring to fig. 1 and 8, an embodiment of the present invention is provided: the utility model provides a wind turbine generator based on marine environment, including wind turbine generator main body 5 and reinforcement module 8, wind turbine generator main body 5 is installed at the top of base 20, and wind turbine generator main body 5 is used for wind power generation, wind turbine generator main body 5 is including fixing the tower section of thick bamboo 28 at the base 20 top, the top of tower section of thick bamboo 28 is provided with puts thing groove and connecting hole, and the connecting hole is located the inboard of putting the thing groove, the inside of tower section of thick bamboo 28 is provided with puts thing hole 29, the top of putting thing hole 29 runs through and is provided with the spread groove, and the top of spread groove link up with the bottom of connecting hole mutually, the spread groove is used for connecting to put thing hole 29 and connecting hole, the inside of connecting hole is placed supporting shoe 33, the inside gomphosis of putting thing groove has supporting shoe two 34, the supporting shoe 33 and supporting shoe two 34 installs power generation box 6 at the top, and power generation box 6 can rotate on tower section of thick bamboo 28 along with the change of wind direction, the bottom of supporting shoe 33 is provided with the spacing hole, spacing hole's inside gomphosis installs stopper 35, spacing stopper 35 is the "concave" font structure, and the bottom of spacing stopper 35 links up with the diapire of connecting hole, the bottom wall looks link up with the connecting hole, the inner wall of connecting hole is provided with the connecting groove, and the jack 32 of the jack 32 is arranged symmetrically, the jack 32 is arranged with the jack 32 is arranged to the jack 32, jack 32 is opposite to the jack 32, and one end is arranged at the jack 32, and 32 is opposite to jack 32, and one end is arranged at one side of jack 32, and 32 is opposite to jack 32, the input end of the generator 36 is connected with the output end of the speed increasing gearbox 37, the connecting shaft is installed at the input end of the speed increasing gearbox 37, one end of the connecting shaft penetrates through the outer wall of one side of the power generating box 6 to be provided with the fan blade 7, wind energy is utilized to drive the fan blade 7 to rotate, then the generator 36 is driven to generate power through the speed increasing gearbox 37, the anemograph 38 and the wind vane are installed at the top of the power generating box 6, the wind vane is located at one side of the anemograph 38, the anemograph 38 is used for detecting the size of offshore wind, the anemograph 38 is electrically connected with the hydraulic push rod 30, the wind vane is used for detecting the wind direction, the reinforcing module 8 is installed at the bottom of the pressure detecting module 3, the reinforcing module 8 is used for reinforcing the supporting module 1, the supporting module 1 cannot change positions, the reinforcing module 8 comprises a hanging ring 39 and an iron chain 40, two groups of hanging rings 39 are installed at the bottom of the object placing plate 10, the hanging rings 39 are distributed with the storage box 11 at intervals, the outer surface of the hanging ring 39 is nested with the iron chain 40, and the iron chain 40 is used for pulling the supporting module 1.
Further, before the wind turbine generator is used, the supporting module 1 is fixed on the sea surface according to the use requirement, one end of the iron chain 40 on the hanging ring 39 is connected with the fixed base on the sea bottom, and therefore the supporting module 1 is limited and fixed, the supporting module 1 cannot float away along with the surging of sea water, in the subsequent use process, the fan blade 7 is driven to rotate through wind energy, the generator 36 is driven to generate electricity through the speed increasing gearbox 37, wind direction and wind force are detected through the anemograph 38 and the wind vane in the use process, the hydraulic push rod 30 in the storage hole 29 is started according to the detected result, the connecting block 31 is driven to move, the clamping block 32 can be plugged into the clamping groove or pulled out from the clamping groove, when the clamping block 32 is embedded with the clamping groove, the first supporting block 33 can be limited, after the clamping block 32 is separated from the clamping groove, the first supporting block is contracted into the inserting hole under the action of the hydraulic push rod 30, at the moment, the generator box 6 can drive the first supporting block 33 and the second supporting block 34 to slowly rotate in the connecting hole and the storage groove along with the change of wind direction, and the wind direction can greatly influence the wind turbine generator to the wind turbine generator in the wind turbine generator and the weather generator.
Further, the using method of the wind turbine generator set comprises the following steps:
S1, before the wind turbine generator is used, a fixed base is firstly built on the seabed according to the use requirement, and the supporting module 1 is connected with the fixed base through an iron chain 40 on a hanging ring 39, so that the stability of the supporting module 1 in use is improved;
S2, after the wind turbine generator is fixed, driving the fan blades 7 to rotate through offshore wind energy, driving the generator 36 to generate power through the speed increasing gearbox 37, transmitting the power to a transformer substation through a cable, and detecting the wind speed and the wind direction of the offshore wind energy through the anemometer 38 and the wind vane;
S3, in the process of using the wind turbine generator, seawater can flow into the storage box 11 from the notch through the mesh plate 12 to generate upward extrusion force, so that the pressing plate 18 is pushed to upwards extrude the connecting plate 15, the connecting plate 15 extrudes the pressure sensor 14 in the protective box 13, and at the moment, the fluctuation amplitude of the pressure index detected by the pressure detection module 3 at the bottom of the object placing plate 10 on the three groups of support cylinders 9 is within an initial set threshold value;
And S4, after the fluctuation range of the pressure values detected by the pressure detection modules 3 on each group of support cylinders 9 exceeds an initial set threshold value, the water pumping module 4 is started, so that the water pumping module 4 can convey the seawater in the adjacent support cylinders 9, and the support cylinders 9 at different positions are kept balanced.
In step S1, the method further includes the steps of:
S11, welding and fixing the tower 28 on the base 20, inserting the first support block 33 and the second support block 34 into the connecting hole and the storage groove according to the requirement, enabling the limiting hole to be embedded with the limiting block 35, starting the hydraulic push rod 30 in the storage hole 29, driving the connecting block 31 to move in the connecting groove, enabling the clamping block 32 to be inserted into the clamping groove after passing through the jack, and then enabling the first support block 33 to be fixed in the connecting hole through the embedding of the clamping block 32 and the clamping groove;
in step S3, the method further includes the steps of:
S31, when the sea water drives the supporting cylinders 9 to shake and incline, one or two groups of supporting cylinders 9 in the three groups of supporting cylinders 9 can tilt to one side, the object placing plate 10 tilts downwards, the extrusion force of the sea water to the pressing plate 18 is increased, the pressure index detected by the corresponding pressure sensor 14 is also increased, the rest supporting cylinders 9 tilt upwards towards the sea surface, the object placing plate 10 connected with the rest supporting cylinders tilts upwards, the distance between the object placing plate 10 and the sea surface is shortened, the extrusion force of the sea water to the pressing plate 18 is reduced, and the pressure value detected by the pressure sensor 14 is reduced;
In step S4, the method further includes the steps of:
S41, in the process, the water suction pump 21 is started, so that the water suction pipe 22 can pump out the seawater in the supporting cylinders 9, then the first electronic valve 24 is opened, the branch pipe 23 can convey the seawater into one group of the supporting cylinders 9, the second electronic valve 26 is opened, the seawater is conveyed into the other group of the supporting cylinders 9 through the water conveying pipe 25, the balance of the supporting module 1 is improved, and the shaking frequency of the wind turbine generator is reduced.
Working principle: when the wind turbine generator is used, the fan blades 7 are driven to rotate through offshore wind energy, then the generator 36 is driven to generate power through the speed increasing gear box 37, the electric energy is transmitted to a transformer substation through a cable, the wind speed and the wind direction of the offshore wind energy are detected through the anemometer 38 and the wind vane, then the hydraulic push rod 30 is started according to plugging, the clamping block 32 is driven to move through the connecting block 31, the clamping block 32 can be separated from or embedded into the clamping groove, and then the power generating box 6 can be driven to change the direction of the fan blades 7 along with the change of the wind direction when the wind power is large;
In the process of using the wind turbine generator, seawater can flow into the storage box 11 from the notch through the screen 12 to generate upward extrusion force, so that the pressing plate 18 is pushed to upwards extrude the connecting plate 15, the connecting plate 15 extrudes the pressure sensor 14 in the protective box 13, when the seawater drives the supporting cylinder 9 to shake and incline, the storage plate 10 is inclined downwards at the moment, the extrusion force of the seawater to the pressing plate 18 is increased, the pressure index detected by the corresponding pressure sensor 14 is also increased, the rest supporting cylinders 9 are inclined towards the sea surface, and the pressure value detected by the pressure sensor 14 is reduced;
After the fluctuation range of the pressure value detected by the pressure detection module 3 on each group of support barrels 9 exceeds the threshold value which is originally set, the water suction pump 21 is started, so that the water suction pipe 22 can pump out the seawater in the support barrels 9, then the first electronic valve 24 is opened, the branch pipe 23 can convey the seawater into one group of support barrels 9, the second electronic valve 26 is opened, the seawater is conveyed into the other group of support barrels 9 through the water conveying pipe 25, the balance of the support module 1 is improved, the shaking frequency of the wind turbine is reduced, and the practicability and the flexibility of the wind turbine in use can be improved to a certain extent.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. Wind turbine generator system based on marine environment, including supporting module (1) and pipeline (2), its characterized in that: the support modules (1) are provided with three groups, the support modules (1) are used for supporting the wind turbine generator to float on the sea, the three groups of support modules (1) are arranged in an equilateral triangle, the adjacent surfaces of the three groups of support modules (1) are provided with conveying pipelines (2), and the conveying pipelines (2) are used for communicating the three groups of support modules (1) together;
The device comprises a support module (1), wherein a pressure detection module (3) is arranged on the outer surface of the support module (1), the pressure detection module (3) is used for detecting the stress of the support module (1) to judge the inclination direction of three groups of support modules (1), the support module (1) comprises a support cylinder (9), the pressure detection module (3) comprises a storage plate (10) welded on the outer surface of the support cylinder (9), two groups of storage boxes (11) which are symmetrically arranged are arranged at the bottom of the storage plate (10), notches are formed in the bottoms of the storage boxes (11) in a penetrating mode, seawater enters the storage boxes (11) through the notches, a screen plate (12) is welded in the notches, and the screen plate (12) is used for protecting against shellfish from the notches to be poked into the storage boxes (11);
The top wall of the storage box (11) is provided with a protective box (13), and the top of the protective box (13) is provided with a pressure sensor (14);
The top of two sets of support section of thick bamboo (9) all welds storage box (19), and the top welding of remaining a set of support section of thick bamboo (9) has base (20), and suction pump (21) are all installed to the roof of storage box (19) and base (20), and suction pipe (22) are all installed to the input of three sets of suction pumps (21), and suction pipe (22) are located support section of thick bamboo (9).
2. The offshore-environment-based wind turbine of claim 1, wherein: the input of pressure sensor (14) passes the bottom of protective housing (13) and installs connecting plate (15), and the surface of connecting plate (15) is laminated mutually with the internal surface of storage tank (11), bracing piece (16) of symmetrical arrangement are installed to the bottom of connecting plate (15), and the bottom of bracing piece (16) is connected with the diapire of storage tank (11), clamp plate (18) have been placed in the internal surface laminating of storage tank (11), and clamp plate (18) are located the centre of otter board (12) and connecting plate (15), clamp plate (18) are used for extrusion connecting plate (15) to apply or reduce pressure to pressure sensor (14), the top of clamp plate (18) is run through and is provided with slotted hole (17) of symmetrical arrangement, and slotted hole (17) are located the outside of bracing piece (16).
3. The offshore-environment-based wind turbine of claim 2, wherein: three groups the tee bend connecting pipe is all installed to the output of suction pump (21), raceway (25) are installed to the one end of tee bend connecting pipe, and raceway (25) are located one of them a set of pipeline (2) for in carrying the sea water in self support section of thick bamboo (9) to adjacent support section of thick bamboo (9), the surface mounting of raceway (25) has electronic valve two (26), branch pipe (23) are installed to the other end of tee bend connecting pipe, and branch pipe (23) are arranged in drawing sea water in adjacent support section of thick bamboo (9) into support section of thick bamboo (9) of self, the surface mounting of branch pipe (23) has electronic valve one (24), suction pump (21), pressure sensor (14) and electronic valve one (24) and electronic valve two (26) electric connection.
4. A wind turbine according to claim 3, wherein: the wind turbine generator system is characterized in that the top of the base (20) is provided with a wind turbine generator system main body (5), the wind turbine generator system main body (5) is used for wind power generation, the wind turbine generator system main body (5) comprises a tower barrel (28) fixed at the top of the base (20), the top of the tower barrel (28) is provided with a storage groove and a connecting hole, the connecting hole is positioned at the inner side of the storage groove, the inside of the tower barrel (28) is provided with a storage hole (29), the top of the storage hole (29) is provided with a connecting groove in a penetrating way, the top of the connecting groove is communicated with the bottom of the connecting hole, the connecting groove is used for connecting the storage hole (29) and the connecting hole, a supporting block I (33) is placed in the connecting hole, a supporting block II (34) is embedded in the inside of the storage groove, a power generation box (6) is installed at the top of the supporting block I (33) and the supporting block II (34), the power generation box (6) can rotate on the tower barrel (28) along with the change of wind direction, the bottom of the supporting block I (33) is provided with a limiting hole, a limiting block (35) is installed in the inner embedding of the limiting block (35), the limiting block (35) is in the shape of a concave structure, the bottom of the limiting block (35) is communicated with the bottom of the connecting hole, the inner wall (35) is symmetrically arranged with the inner wall of the jack (35) in a groove, the inner wall (30) is symmetrically arranged, and is symmetrically arranged opposite to the bottom of the jack (30), connecting block (31) are all installed to the output of two sets of hydraulic push rods (30), and in the stopper (35) is passed the inside extension of spread groove to the one end of connecting block (31), fixture block (32) are all installed to the one end of two sets of connecting blocks (31), and fixture block (32) are located the inboard of jack, and fixture block (32) pass jack and draw-in groove gomphosis.
5. A wind turbine according to claim 3, wherein: the bottom area of the supporting cylinder (9) is soaked in seawater, the supporting cylinder (9) is made of copper alloy, the conveying pipelines (2) are also distributed in a triangular shape, the conveying pipelines (2) are positioned on the sea surface, and the object placing plate (10) is in a circular ring shape;
when one group of supporting cylinders (9) incline downwards, one group of storage boxes (11) can move downwards continuously, seawater is shoved into the storage boxes (11) to squeeze the pressing plates (18), the pressing plates (18) are pushed to increase the pressure upwards to continuously squeeze the connecting plates (15), and the pressure value detected by the pressure sensor (14) is increased at the moment;
the inner wall welding that welds the support section of thick bamboo (9) that has base (20) has baffle (27), and baffle (27) are used for separating into two spaces with this support section of thick bamboo (9), and the sea water volume in the space below baffle (27) is fixed, and the sea water volume above baffle (27) is according to the rocking of support module (1) and is changed, and raceway (25) and branch pipe (23) all are located the inboard of pipeline (2), and raceway (25) are located one side of branch pipe (23).
6. The offshore-environment-based wind turbine of claim 4, wherein: the bottom wall of the power generation box (6) is provided with a power generator (36) and a speed increasing gear box (37), the speed increasing gear box (37) is located on one side of the power generator (36), the input end of the power generator (36) is connected with the output end of the speed increasing gear box (37), the input end of the speed increasing gear box (37) is provided with a connecting shaft, one end of the connecting shaft penetrates through the outer wall of one side of the power generation box (6) to be provided with fan blades (7), wind energy is utilized to drive the fan blades (7) to rotate, and then the speed increasing gear box (37) is used for driving the power generator (36) to generate power.
7. The offshore-environment-based wind turbine of claim 6, wherein: the top of the power generation box (6) is provided with an anemometer (38) and a wind vane, the wind vane is located on one side of the anemometer (38), the anemometer (38) is used for detecting the size of offshore wind power, the anemometer (38) is electrically connected with the hydraulic push rod (30), and the wind vane is used for detecting the wind direction.
8. The offshore-environment-based wind turbine of claim 1, wherein: the bottom of pressure detection module (3) is installed and is consolidated module (8), and consolidate module (8) are used for consolidating support module (1), make support module (1) can not change the position, consolidate module (8) including rings (39) and iron chain (40), two sets of rings (39) of symmetrical arrangement are installed to the bottom of putting thing board (10), and rings (39) and storage tank (11) interval distribution, the surface nestification of rings (39) has iron chain (40), and iron chain (40) are used for pulling support module (1).
9. The method of any one of claims 1-8, wherein the method of using a wind turbine based on an offshore environment is as follows:
s1, before the wind turbine generator is used, a fixed base is firstly built on the seabed according to the use requirement, and the supporting module (1) is connected with the fixed base through an iron chain (40) on a hanging ring (39), so that the stability of the supporting module (1) in use is improved;
s2, after the wind turbine generator is fixed, driving the fan blades (7) to rotate through offshore wind energy, driving the generator (36) to generate power through a speed increasing gearbox (37), transmitting the power to a transformer substation through a cable, and detecting the wind speed and the wind direction of the offshore wind energy through an anemometer (38) and a wind vane;
S3, in the process of using the wind turbine generator, seawater can flow into the storage box (11) from the notch through the mesh plate (12) to generate upward extrusion force, so that the pressing plate (18) is pushed to upwards extrude the connecting plate (15), the connecting plate (15) extrudes the pressure sensor (14) in the protective box (13), and at the moment, the fluctuation amplitude of the pressure index detected by the pressure detection module (3) at the bottom of the object placing plate (10) on the three groups of support cylinders (9) is within an initial set threshold value;
s4, after the fluctuation range of the pressure values detected by the pressure detection modules (3) on each group of support cylinders (9) exceeds an initial set threshold value, the water pumping module (4) is started, so that the water pumping module (4) can convey the seawater in the adjacent support cylinders (9), and the support cylinders (9) at different positions can be kept balanced.
10. The method according to claim 9, wherein in step S1, the method further comprises the steps of:
S11, welding and fixing the tower cylinder (28) on the base (20), inserting the first supporting block (33) and the second supporting block (34) into the connecting hole and the storage groove according to the requirement, enabling the limiting hole to be embedded with the limiting block (35), starting the hydraulic push rod (30) in the storage hole (29), driving the connecting block (31) to move in the connecting groove, enabling the clamping block (32) to be inserted into the clamping groove after penetrating through the jack, and then enabling the first supporting block (33) to be fixed in the connecting hole through the embedding of the clamping block (32) and the clamping groove;
In the step S3, the method further includes the following steps:
S31, when the sea water drives the supporting cylinders (9) to shake and incline, one or two groups of supporting cylinders (9) in the three groups of supporting cylinders (9) can incline to one side at the moment, the object placing plate (10) inclines downwards at the moment, the extrusion force of the sea water to the pressing plate (18) is increased, the pressure index detected by the corresponding pressure sensor (14) is also increased, the rest supporting cylinders (9) incline to the sea surface, the object placing plate (10) connected with the rest supporting cylinders can tilt upwards, the distance between the object placing plate (10) and the sea surface is shortened, the extrusion force of the sea water to the pressing plate (18) is reduced, and the pressure value detected by the pressure sensor (14) is reduced;
In the step S4, the method further includes the following steps:
S41, in the process, the water suction pump (21) is started, the water suction pipe (22) can pump out the seawater in the self-supporting cylinder (9), then the first electronic valve (24) is opened, the branch pipe (23) can convey the seawater into one group of supporting cylinders (9), the second electronic valve (26) is opened, the seawater is conveyed into the other group of supporting cylinders (9) through the water conveying pipe (25), the balance of the supporting module (1) is improved, and the shaking frequency of the wind turbine generator is reduced.
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| CN202311046889.2A CN116988938B (en) | 2023-08-19 | 2023-08-19 | Wind turbine generator set based on offshore environment and application method thereof |
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| CN202311046889.2A CN116988938B (en) | 2023-08-19 | 2023-08-19 | Wind turbine generator set based on offshore environment and application method thereof |
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| CN116988938A (en) | 2023-11-03 |
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