CN117489531A - Typhoon-resistant floating wind turbine generator suitable for deep open sea - Google Patents

Typhoon-resistant floating wind turbine generator suitable for deep open sea Download PDF

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Publication number
CN117489531A
CN117489531A CN202311565856.9A CN202311565856A CN117489531A CN 117489531 A CN117489531 A CN 117489531A CN 202311565856 A CN202311565856 A CN 202311565856A CN 117489531 A CN117489531 A CN 117489531A
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CN
China
Prior art keywords
support arm
wind turbine
counterweight
impeller
typhoon
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311565856.9A
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Chinese (zh)
Inventor
黄守道
黄晟
罗德荣
王鹏达
张冀
吕铭晟
廖武
肖金鑫
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Hunan University
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Hunan University
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Publication date
Application filed by Hunan University filed Critical Hunan University
Priority to CN202311565856.9A priority Critical patent/CN117489531A/en
Publication of CN117489531A publication Critical patent/CN117489531A/en
Pending legal-status Critical Current

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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
    • 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
    • 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
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/02—Wind motors with rotation axis substantially parallel to the air flow entering the rotor  having a plurality of rotors
    • 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
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/02—Wind motors with rotation axis substantially parallel to the air flow entering the rotor  having a plurality of rotors
    • F03D1/025—Wind motors with rotation axis substantially parallel to the air flow entering the rotor  having a plurality of rotors coaxially arranged
    • 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
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/065—Rotors characterised by their construction elements
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators
    • H02K7/1823—Rotary generators structurally associated with turbines or similar engines
    • H02K7/183—Rotary generators structurally associated with turbines or similar engines wherein the turbine is a wind turbine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/93—Mounting on supporting structures or systems on a structure floating on a liquid surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/95—Mounting on supporting structures or systems offshore
    • 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
    • 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
    • Y02E10/727—Offshore wind turbines

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  • 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 typhoon-resistant floating wind turbine suitable for deep open sea, which comprises a floating platform with a mooring component, wherein a pair of support arms are arranged on the floating platform, a cabin is arranged at the top of each support arm, two impeller groups are respectively arranged at two ends of each cabin to capture wind energy twice in front and behind, and the two impeller groups are connected with an independent gear box and a permanent magnet synchronous generator to form a distributed power generation unit with smaller power magnitude; the impeller group consists of a hub and two fan blades, and the permanent magnet synchronous generator is controlled by software, so that the front impeller and the rear impeller are in an included angle 90 DEG state when the two impeller groups work, and are in a parallel state when the machine is stopped. The invention aims to improve the wind energy utilization efficiency and solve the problems of lower wind energy utilization efficiency and lower power density of the conventional wind turbine generator and the problem of high manufacturing cost of the conventional high-capacity wind turbine generator.

Description

Typhoon-resistant floating wind turbine generator suitable for deep open sea
Technical Field
The invention relates to a wind turbine generator, in particular to a typhoon-resistant floating wind turbine generator applicable to deep open sea.
Background
The wind power industry is currently in the explosive development period and has become the renewable energy industry with the largest global installed capacity. Because the offshore area is influenced by inland terrains and hydrological weather, wind resources are far less abundant and stable than the deep sea area, and are influenced by important industries such as fishery, shipping and the like, the construction of a large-capacity fan and a large-scale wind power plant is not facilitated; meanwhile, the total reserve of the offshore wind energy in China exceeds 2000 GW, wherein the reserve of the deep-open sea wind energy is more than 60%, so that the offshore wind power industry is bound to develop towards a deep-open sea area, and the novel offshore floating wind turbine generator set with large capacity for the deep-open sea is generated and has increasingly obvious importance. At present, most offshore floating wind turbines only carry a single turbine on a floating platform, and the floating platform has high cost proportion to the whole machine cost, so that the capacity of the single wind turbine is limited, the generated energy is less, the power density is low, the unit power cost is high, and the offshore wind turbine is not beneficial to the promotion of the low-price offshore wind turbines. How to improve the wind energy utilization rate of the wind turbine generator is always an important research direction in the field of wind power generation, and the wind energy utilization rate is limited in a mode that the existing wind turbine generator is a single-machine single-impeller; the blade airfoil optimization design technology is relatively mature, and the improvement on the wind energy utilization efficiency is limited.
Disclosure of Invention
The invention aims to solve the technical problems: aiming at the problems in the prior art, the invention provides an anti-typhoon floating wind turbine suitable for deep open sea, which aims to improve the wind energy utilization efficiency and solve the problems of low wind energy utilization efficiency and low power density of the conventional wind turbine and the problem of high manufacturing cost of the conventional high-capacity wind turbine.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides an anti typhoon floating wind turbine generator system suitable for deep open sea, includes the floating platform that has the mooring component, be equipped with a pair of support arm on the floating platform, the top of support arm is equipped with the cabin, two impeller groups are respectively installed at the both ends in cabin in order to realize two times wind energy capture around, and two impeller groups are connected with independent gear box and permanent magnet synchronous generator in order to constitute the less distributed generation unit of power magnitude.
Optionally, the support arm is the L type arm that has a length and a short two arms of force, the middle part of L type arm rotates with floating platform through the pivot and is connected, longer arm of force is for being used for installing the unit support arm of cabin and impeller group in the L type arm, shorter arm of force is for being used for realizing the counter weight support arm to the unit support arm counter weight, cabin and impeller group are installed on the unit support arm, the counter weight support arm links to each other with the haulage rope of the hoist mechanism of installing on floating platform in order to realize the focus height-adjustable of cabin and impeller group.
Optionally, the impeller group comprises a hub and two fan blades, and the permanent magnet synchronous generator is controlled by software, so that the front impeller and the rear impeller are in an included angle of 90 degrees when the two impeller groups work, and are in a parallel state when the machine is stopped.
Optionally, the mooring component is connected with the floating platform through a connecting point to realize single-point mooring, and the pair of support arms and the mooring component are respectively positioned on different sides of the floating platform to realize passive yaw capable of automatically tracking wind direction change.
Optionally, the floating platform comprises three buoys, the three buoys are arranged in a triangle shape and two adjacent buoys are connected through at least one cross beam, and one support arm and the rest of one buoy are respectively arranged at the tops of the two buoys in the three buoys and are connected with the mooring component.
Optionally, the mooring component comprises one or more anchor chains, the upper ends of which are connected to the floating platform by a swivel mechanism.
Optionally, the included angle between the unit support arm and the counterweight support arm is an obtuse angle.
Optionally, a reinforcing connecting rod is further connected between the end parts of the unit support arm and the counterweight support arm, and the reinforcing connecting rod, the unit support arm and the counterweight support arm are arranged in a triangle.
Optionally, the end of counter weight support arm is equipped with the balancing weight, the lower part that is located the balancing weight on the showy platform is equipped with the counter weight and supports, be equipped with the arc recess on the top surface that the counter weight supported to be used for when putting into the arc recess with the balancing weight under the work power generation state cooperation fixed balancing weight.
Optionally, the hoisting mechanism is arranged at an intermediate position between the two support arms, and the counterweight support arms of the two support arms are connected with the traction rope of the same hoisting mechanism.
Compared with the prior art, the invention has the following advantages:
1. the invention adopts the technical means of one-base double-machine and front and back double-impeller sets to realize front and back wind energy capture, can improve the wind energy utilization efficiency, and solves the problems of lower wind energy utilization efficiency and lower power density of the conventional wind turbine generator.
2. According to the invention, each impeller is respectively connected with one wind driven generator to form a distributed power generation unit with smaller power magnitude, the existing low-power magnitude wind power generation technology is relatively mature, and the problem of high manufacturing cost of the high-capacity wind turbine generator is solved.
Drawings
FIG. 1 is a schematic diagram of an operating state of an anti-typhoon floating wind turbine generator according to an embodiment of the invention.
Fig. 2 is a schematic diagram of typhoon-resistant state of the typhoon-resistant floating wind turbine generator according to an embodiment of the invention.
Legend description: 1. a floating platform; 11. a pontoon; 12. a cross beam; 13. a counterweight support; 2. a mooring component; 3. a support arm; 31. a unit support arm; 32. a counterweight support arm; 33. balancing weight; 34. reinforcing the connecting rod; 4. a nacelle; 5. an impeller set; 6. and a hoisting mechanism.
Detailed Description
The technical scheme of the invention will be further described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the embodiment provides a typhoon-resistant floating wind turbine suitable for deep open sea, which comprises a floating platform 1 with a mooring component 2, a pair of support arms 3 are arranged on the floating platform 1, a cabin 4 is arranged at the top of each support arm 3, two impeller groups 5 are respectively arranged at two ends of each cabin 4 to capture wind energy twice, and the two impeller groups 5 are connected with an independent gear box and a permanent magnet synchronous generator to form a distributed power generation unit with smaller power magnitude. The typhoon-resistant floating wind turbine generator of the embodiment adopts the technical means of one-base double-machine and front and back double impellers, realizes front and back wind energy capture, can improve the wind energy utilization efficiency, solves the problems of lower wind energy utilization efficiency and lower power density of the conventional wind turbine generator, and is particularly suitable for the typhoon-resistant floating wind turbine generator in deep open sea. The typhoon-resistant floating wind turbine generator of the embodiment adopts each impeller to be respectively connected with a wind driven generator to form a distributed power generation unit with smaller power magnitude, the existing low-power magnitude wind power generation technology is relatively mature, and the problem of high manufacturing cost of the high-capacity wind turbine generator is solved. As shown in fig. 1 and fig. 2, in this embodiment, two impeller groups 5 are respectively installed at two ends of the nacelle 4, and the two impeller groups 5 form an X-type impeller group, and two times of wind energy capturing are implemented through the front and rear double impeller groups 5, so as to improve the wind energy utilization efficiency of the unit. In this embodiment, the impeller groups 5 installed at two ends of the nacelle 4 are provided with an independent gear box and a permanent magnet synchronous generator, and the transmission shaft of the impeller groups 5 drives the main shaft of the permanent magnet synchronous generator to rotate through the gear box so as to generate electricity.
As shown in fig. 1 and 2, in this embodiment, the support arm 3 is an L-shaped arm with two long and short arms, the middle part of the L-shaped arm is rotatably connected with the floating platform 1 through a rotating shaft, the longer arm in the L-shaped arm is a set support arm 31 for installing the nacelle 4 and the impeller set 5, the shorter arm is a counterweight support arm 32 for realizing counterweight of the set support arm 31, the nacelle 4 and the impeller set 5 are installed on the set support arm 31, and the counterweight support arm 32 is connected with a traction rope of the hoisting mechanism 6 installed on the floating platform 1 to realize that the gravity center height of the nacelle 4 and the impeller set 5 is adjustable. The embodiment adopts the technical means of double L-shaped liftable support arms, the height of the unit is adjusted by controlling the hoisting mechanism 6, the problem that the gravity center of a conventional unit is not adjustable is solved, the gravity center is adjusted to be high under the normal working condition so as to capture wind energy in a higher area, and the gravity center is adjusted downwards under the strong typhoon limit working condition so as to reduce the load born by the unit; meanwhile, the gravity center is adjustable, so that the problem of high assembly and delivery costs of a conventional high-capacity unit can be solved. The support arm 3 is driven to rotate relative to the floating platform 1 through the hoisting mechanism 6, and the support arm 3 can realize gravity center height adjustment of the cabin 4 based on the principle similar to a lever because of different lengths of the set support arm 31 and the counterweight support arm 32, and the cabin 4 supporting structure is of a rigid structure, so that the cabin is reduced when the typhoon working condition is faced, the stress is reduced, the set is prevented from being irreversibly damaged, and the typhoon working condition is safely transited. In this embodiment, the unit support arm 31 and the counterweight support arm 32 are both in an oval tower structure, and annular reinforcing ribs are arranged inside the tower, and transverse partition plates with holes in the middle are installed at intervals, so that the bending resistance of the support arm is ensured.
As shown in fig. 1 and 2, in this embodiment, the impeller set 5 is composed of a hub and two fan blades, and the permanent magnet synchronous generator is controlled by software so that front and rear impellers are in an included angle 90 ° state when the two impeller sets 5 work and are in a parallel state when the machine is stopped. The front impeller and the rear impeller adopt the technical means of flexible connection, the permanent magnet synchronous generator is controlled by software, and under normal working conditions, the front impeller and the rear impeller keep an included angle of 90 degrees, so that the running stability problem of the double-impeller unit is solved; the front impeller and the rear impeller are in a state parallel to the support arm in the stop state, so that the problem of damage caused by striking the blade by sea waves is solved.
In addition, considering that the existing floating wind turbine generator adopts a multi-point mooring mode, the wind direction change is faced with an active yaw mode, the wind is directed through a yaw bearing in the cabin, the strength requirement on the yaw bearing is too high after the size and the weight of the wind turbine generator become large, the wind turbine generator is difficult to implement in engineering, and the large-scale development of the floating wind turbine generator is hindered. As shown in fig. 1 and 2, in this embodiment, the mooring component 2 is connected with the floating platform 1 through a connection point to realize single-point mooring, and the pair of support arms 3 and the mooring component 2 are respectively located at different sides of the floating platform 1 to realize passive yaw capable of automatically tracking wind direction change, the mooring component 2 adopts a single-point mooring technical means to realize passive yaw capable of automatically tracking wind direction change, a yaw mechanism in a cabin is eliminated, and the problems of large volume weight, large yaw load and the like of a yaw system of the high-capacity wind turbine generator are solved. In this embodiment, the connection point may be a bearing or a connection ring to ensure that the floating platform 1 and the mooring component 2 are rotatable relative to each other.
As shown in fig. 1 and 2, in this embodiment, the floating platform 1 includes three pontoons 11, the three pontoons 11 are arranged in a triangular shape, and two adjacent pontoons 11 are connected by at least one cross beam 12, the tops of two pontoons 11 in the three pontoons 11 are respectively provided with a support arm 3, and the remaining pontoons 11 are connected with the mooring component 2, so that two sides of the triangle are more stable during passive yaw for automatically tracking wind direction changes. As a preferred embodiment, three pontoons 11 are provided with ballast tanks in this example, and the stability of the floating platform 1 is controlled by adjusting the amount of water in the pontoons 11.
In this embodiment, the mooring component 2 comprises one or more anchor chains, and the upper ends of the anchor chains are connected with the floating platform 1 through a rotating mechanism, so that the impact of sea waves on the mooring component 2 can be restrained from being transmitted to the floating platform 1. In this embodiment, the rotation mechanism is specifically a bearing, and in addition, a nested ring may be used to realize rotatable connection between the upper end of the anchor chain and the floating platform 1. As shown in fig. 1 and 2, the mooring component 2 in this embodiment comprises three anchor chains, the upper ends of which are mounted at the bottom of the buoy 11 and the lower ends of which are intended to be fastened to the sea floor by anchors or connectors. In addition, more or fewer anchor chains can be adopted according to the needs, and it is to be understood that the number and the distribution form of the anchor chains are not limited, and the number and the distribution form of the anchor chains can meet the use requirements.
In this embodiment, the included angle between the set support arm 31 and the counterweight support arm 32 is an obtuse angle, so that the rotation angle of the support arm 3 is smaller than 90 °, and the required moment when the support arm 3 descends from the highest position can be smaller based on the counterweight of the counterweight support arm 32.
As shown in fig. 1 and 2, in this embodiment, a reinforcing connecting rod 34 is further connected between the ends of the set support arm 31 and the counterweight support arm 32, and the reinforcing connecting rod 34, the set support arm 31 and the counterweight support arm 32 are arranged in a triangle, so that the structural strength and the stress performance of the support arm 3 can be ensured while the set support arm 31 and the counterweight support arm 32 realize lifting of the center of gravity.
As shown in fig. 1 and 2, in this embodiment, the end of the counterweight support arm 32 is provided with a counterweight 33, the lower part of the counterweight 33 located on the floating platform 1 is provided with a counterweight support 13, the top surface of the counterweight support 13 is provided with an arc groove, so that the counterweight 33 is matched and fixed when the counterweight 33 is placed in the arc groove in the working power generation state, the end of the counterweight support arm 32 is provided with the counterweight 33, so that the weight of the support arm formed by the counterweight support arm 32 and the counterweight 33 is similar (but not equal) to that of the support arm formed by the unit support arm 31, the nacelle 4 and the impeller set 5, the moment difference between the left side and the right side is reduced, the stress of the support arm 3 can be reduced, the lower part of the counterweight 33 located on the floating platform 1 is provided with the counterweight support 13, and the top surface of the counterweight support 13 is provided with the arc groove, so that the arc groove and the counterweight 33 are matched and fixed when the counterweight 33 is placed in the arc groove in the working power generation state, the arc groove and the counterweight 33 on the top surface of the counterweight support 13 in the working power generation state are mutually anastomosed, and the stress performance reaches the optimal state.
In this embodiment, the hoisting mechanism 6 is disposed at the middle position between the two support arms 3, and the counterweight support arms 32 of the two support arms 3 are connected with the traction rope of the same hoisting mechanism 6, so that the structure is more compact, the stress balance on two sides can be ensured, and the problem of poor structural stability of the unit under extreme working conditions such as typhoons is solved. Under the normal power generation working condition, the hoisting mechanism tightens up to enable the support arm 3 to stand up, and under the cutting working condition, the hoisting mechanism loosens to enable the support arm 3 to descend, so that the gravity center is adjusted downwards. It goes without saying that the hoisting mechanism 6 can be driven in alternative ways as required, including electric, hydraulic and pneumatic driving, under the requirement of the counterweight support arm 32 based on the driving support arm 3, and can be driven directly or indirectly through a transmission mechanism under various driving modes as required.
The working principle of the typhoon-resistant floating wind turbine generator applicable to deep open sea is as follows: as shown in fig. 1, in the working state of the deep and open sea typhoon-resistant floating wind turbine generator, the traction rope is tightened by the hoisting mechanism to drive the turbine support arm 31 to stand up to maintain an included angle of 75 degrees with the horizontal plane, the counterweight support arm 32 is lowered, and the engine room 4 and the impeller set 5 are lifted. The balancing weight 33 connected with the balancing weight support arm 32 is arranged on the arc-shaped groove on the top surface of the balancing weight support 13, so that the weight of one side support arm formed by the machine set support arm 31 and the upper end cabin 4 and the impeller set 5 is ensured to be similar to (but not equal to) the weight of the other side support arm formed by the balancing weight support arm 32 and the balancing weight 33, the moment difference between the left side and the right side is reduced, and the stress of the support arm 3 is reduced. The front permanent magnet synchronous generator and the rear permanent magnet synchronous generator in the engine room 4 synchronously realize the same-speed and same-direction operation through software, so that the included angle between the front impeller group 5 and the rear impeller group 5 is kept at 90 degrees, the two-time efficient wind energy capture is ensured, and the stability of the unit in the operation state is ensured. The embodiment is suitable for the deep-open sea typhoon-resistant floating wind turbine generator under the cutting working condition when encountering strong/typhoon environments, the hoisting mechanism loosens the traction rope, the support arm 3 rotates, and the weight of one side support arm formed by the machine support arm 31 and the upper cabin 4 and the impeller set 5 is larger than that of the other side support arm formed by the counterweight support arm 32 and the counterweight 33, so that the machine support arm 31 gradually descends, the counterweight support arm 32 gradually ascends, and the heights of the machine cabin 4 and the impeller set 5 gradually descend. The movable range of the machine set support arm 31 falls between 15 degrees to 75 degrees with the horizontal plane, the moment on one side of the machine set support arm 4 is ensured not to exceed the bearing capacity range of the machine set support arm 31, the balancing weight 33 connected with the balancing weight support arm 32 is lifted, the moment on the upper end of the machine set support arm 31, the machine set 4, the impeller set 5 and the lower end of the balancing weight support arm 32 are ensured to be similar, the stress balance on two sides is kept, the stress of the support arm 3 is greatly reduced, the front and rear impeller sets 5 of the machine set support arm 4 are kept to be locked in a state parallel to the machine set support arm 31, and the blades are ensured not to be influenced by sea waves.
In summary, the typhoon-resistant floating wind turbine generator suitable for deep open sea comprises a floating platform 1 with a mooring component 2, a height-adjustable support arm 3 is arranged on the floating platform 1, a cabin 4 is arranged at the top of the support arm 3, an impeller set 5 is arranged on the cabin 4, and the height adjustment of the cabin 4 and the impeller set 5 can be realized through the height adjustment of the support arm 3, so that the cabin can be reduced when the typhoon condition is faced, the stress is reduced, the turbine generator is prevented from being irreversibly damaged, the typhoon condition is safely transited, and the typhoon-resistant floating wind turbine generator is particularly suitable for deep open sea wind power generation; the characteristics can also realize the height adjustment of the engine room and the impeller set according to different wind conditions so as to improve the wind energy utilization efficiency and the rated power of the set, and have the advantages of light weight, low cost, adjustable gravity center, stable structure, high power density and high wind energy capturing efficiency.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.

Claims (10)

1. The utility model provides a typhoon resistant floating wind turbine generator system suitable for deep open sea, its characterized in that, including floating platform (1) with mooring component (2), be equipped with a pair of support arm (3) on floating platform (1), the top of support arm (3) is equipped with cabin (4), impeller group (5) are respectively installed at the both ends of cabin (4) in order to realize two times wind energy capture around, and two impeller groups (5) are connected with independent gear box and permanent magnet synchronous generator in order to constitute the less distributed power generation unit of power magnitude.
2. The typhoon-resistant floating wind turbine generator system suitable for deep open sea according to claim 1, wherein the support arm (3) is an L-shaped arm with a long arm and a short arm, the middle part of the L-shaped arm is rotatably connected with the floating platform (1) through a rotating shaft, the longer arm in the L-shaped arm is a set support arm (31) for installing a cabin (4) and an impeller set (5), the shorter arm is a counterweight support arm (32) for realizing counterweight of the set support arm (31), the cabin (4) and the impeller set (5) are installed on the set support arm (31), and the counterweight support arm (32) is connected with a traction rope of a hoisting mechanism (6) installed on the floating platform (1) so as to realize that the gravity center height of the cabin (4) and the impeller set (5) is adjustable.
3. The typhoon-resistant floating wind turbine generator system suitable for deep open sea according to claim 1, wherein the impeller set (5) consists of a hub and two fan blades, and the permanent magnet synchronous generator is controlled by software so that front and rear impellers are in an included angle of 90 degrees when the two impeller sets (5) work and are in a parallel state when the two impellers are stopped.
4. Typhoon resistant floating wind turbine suitable for deep open sea according to claim 1, characterized in that the mooring component (2) is connected with the floating platform (1) through one connection point to realize single point mooring, and a pair of support arms (3) and mooring components (2) are respectively located at different sides of the floating platform (1) to realize passive yaw capable of automatically tracking wind direction change.
5. The typhoon resistant floating wind turbine generator system suitable for deep open sea according to claim 4, wherein the floating platform (1) comprises three pontoons (11), the three pontoons (11) are arranged in a triangular shape and two adjacent pontoons (11) are connected through at least one cross beam (12), one support arm (3) is respectively arranged at the top of two pontoons (11) in the three pontoons (11), and the rest of one pontoon (11) is connected with the mooring component (2).
6. Typhoon resistant floating wind turbine suitable for deep open sea according to claim 5, characterised in that the mooring component (2) comprises one or more anchor chains, the upper ends of which are connected to the floating platform (1) by means of a rotation mechanism.
7. Typhoon-resistant floating wind turbine suitable for deep open sea according to claim 2, characterized in that the included angle of both the turbine arm (31) and the counterweight arm (32) is obtuse.
8. The typhoon resistant floating wind turbine generator system suitable for deep open sea according to claim 7, wherein a reinforcing connecting rod (34) is further connected between the ends of the turbine support arm (31) and the counterweight support arm (32), and the reinforcing connecting rod (34), the turbine support arm (31) and the counterweight support arm (32) are arranged in a triangle.
9. The typhoon-resistant floating wind turbine generator system suitable for deep open sea according to claim 2, wherein the tail end of the counterweight support arm (32) is provided with a counterweight (33), the lower part of the counterweight (33) on the floating platform (1) is provided with a counterweight support (13), and the top surface of the counterweight support (13) is provided with an arc-shaped groove for matching and fixing the counterweight (33) when the counterweight (33) is placed in the arc-shaped groove in a working power generation state.
10. Typhoon-resistant floating wind turbine suitable for deep open sea according to claim 2, characterized in that the hoisting mechanism (6) is arranged in an intermediate position between the two arms (3), and the counterweight arms (32) of the two arms (3) are connected with the hauling rope of the same hoisting mechanism (6).
CN202311565856.9A 2023-11-22 2023-11-22 Typhoon-resistant floating wind turbine generator suitable for deep open sea Pending CN117489531A (en)

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