CN114909255A - Megawatt-level inner rotating shaft type floating spiral wind turbine - Google Patents

Megawatt-level inner rotating shaft type floating spiral wind turbine Download PDF

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Publication number
CN114909255A
CN114909255A CN202210666791.6A CN202210666791A CN114909255A CN 114909255 A CN114909255 A CN 114909255A CN 202210666791 A CN202210666791 A CN 202210666791A CN 114909255 A CN114909255 A CN 114909255A
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CN
China
Prior art keywords
main shaft
tower
shaft
sleeve
bearing
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
CN202210666791.6A
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Chinese (zh)
Inventor
杨礼东
姜玉挺
张国良
张健
苑士岩
张孟雅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Northeast Electric Power Design Institute of China Power Engineering Consulting Group
Original Assignee
Northeast Electric Power Design Institute of China Power Engineering Consulting Group
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Northeast Electric Power Design Institute of China Power Engineering Consulting Group filed Critical Northeast Electric Power Design Institute of China Power Engineering Consulting Group
Priority to CN202210666791.6A priority Critical patent/CN114909255A/en
Publication of CN114909255A publication Critical patent/CN114909255A/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
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/005—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  the axis being vertical
    • 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
    • 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
    • F03D15/00—Transmission of mechanical power
    • F03D15/10—Transmission of mechanical power using gearing not limited to rotary motion, e.g. with oscillating or reciprocating members
    • 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
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • F03D3/061—Rotors characterised by their aerodynamic shape, e.g. aerofoil profiles
    • 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
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • F03D3/062—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
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • 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
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/70—Bearing or lubricating arrangements
    • 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
    • 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
    • Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction

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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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Wind Motors (AREA)

Abstract

A megawatt-level inner rotating shaft type floating spiral wind turbine comprises an impeller rotating around a vertical main shaft, a rotatable main shaft, a tower barrel, a tower base, a support rod for connecting the impeller and the main shaft and a floating foundation for supporting an upper fan; the support rods are fixedly connected with the main shaft and are vertically arranged, a sleeve is arranged between the main shaft and the joint of the two layers of support rods, and a shaft sleeve is arranged in the sleeve to improve the strength of the main shaft between the joints of the main shaft and the support rods; the invention has the beneficial effects that: according to the invention, through the improvement of the blade form and the structure of the main shaft and the tower column, particularly through fixedly connecting the tower drum and the tower base on the floating foundation, the rotatable main shaft is connected with the transmission device and the power generation system in the tower base, so that the main shaft is supported to a certain extent when working, the restriction on the main shaft when working is increased, the strength and the stability of the whole structure are improved, and the design scheme of the large-scale floating fan is provided.

Description

Megawatt-level inner rotating shaft type floating spiral wind turbine
Technical Field
The invention relates to a megawatt-level inner rotating shaft type floating spiral wind turbine, belonging to the technical field of design and construction of offshore floating wind turbines and the field of development and design of renewable energy sources.
Background
The method has the advantages of optimizing an energy supply structure, improving the energy utilization efficiency, and building a clean, low-carbon, safe and efficient modern energy system, and is an important strategic target in China. The wind resource has large storage amount, is renewable and pollution-free, and is an important renewable energy form. The development of offshore wind energy has become a new strategy for the development of wind power technology and industry in China by virtue of the advantages of abundant resource reserves, wide development space and the like. Because the technology is immature, the cost of the existing floating fan is relatively high, and the development of a large-scale floating fan is one of important ways for reducing the cost. The floating wind turbine mainly comprises a horizontal axis wind turbine and a vertical axis wind turbine. In order to reduce the cost of offshore wind power, the single-machine capacity of the wind turbine generator needs to be increased. However, as the size of the wind turbine is getting larger and larger with the increase of the power of the single machine, the huge transmission system with the horizontal axis wind turbine placed on top poses the risk of instability of the wind turbine system. Compared with a floating horizontal shaft wind turbine, the floating vertical shaft wind turbine has the series advantages of stable structure, low installation and maintenance cost, low noise, capability of fully utilizing wind energy in all directions and the like, and is more suitable for the large-scale development requirement of the floating wind turbine.
However, the conventional vertical axis wind turbine has some disadvantages, especially the disadvantages after the wind turbine is enlarged are more obvious: (1) the blade has large pneumatic load fluctuation in the operation process, the blade is easy to fatigue failure, crack and fracture after long-time operation, and impact is generated on a rotating main shaft to cause unstable output power; (2) the whole tower column of the fan rotates along with the blades, the diameter of the tower column can reach several meters for a large vertical shaft wind turbine with the power of 5MW or more, and the rotating tower column can cause series processing and structural problems.
Disclosure of Invention
Aiming at the existing problems, the invention aims to provide a structural design of a megawatt-level inner rotating shaft type floating spiral wind turbine, which improves the strength and stability of the whole structure through improving the blade form, the main shaft and the tower column structure so as to improve the performance of the wind turbine, and is innovative in that an inner rotating shaft type spiral vertical shaft fan is designed, and the floating foundation refers to the existing OC4 floating foundation.
To achieve the above object, the present invention provides
A megawatt-level inner rotating shaft type floating spiral wind turbine comprises an impeller rotating around a vertical main shaft, a rotatable main shaft, a tower barrel, a tower base, a support rod for connecting the impeller and the main shaft and a floating foundation for supporting an upper fan; the support rods are fixedly connected with the main shaft and are vertically arranged, a sleeve is arranged between the main shaft and the joint of the two layers of support rods, and a shaft sleeve is arranged in the sleeve to improve the strength of the main shaft between the joints of the main shaft and the support rods; the lower half part of the main shaft extends into a tower drum which is fixed on a tower base, and the tower base is fixedly connected on a floating foundation; the main shaft is connected with a transmission device in the tower base, the transmission device is connected with a power generation system, when the upper fan works, the impeller drives the main shaft to rotate, the tower drum and the tower base do not rotate as a base, and the main shaft is supported and fixed, so that the stability and the strength of the structure are improved.
Furthermore, the upper part and the lower part of the impeller are respectively connected with a support rod, one end of the support rod, which is far away from the vertical main shaft, is directly connected with the impeller, the other end of the support rod is fixedly connected with the main shaft through a hub, a bearing flange is arranged at the joint of the hub and the support rod and the main shaft, and an end cover is further arranged at the upper end of the hub on the uppermost part of the main shaft.
Further, the sleeve comprises a cylinder body, an upper flange and a lower flange, wherein the cylinder body is a metal cylinder and is hollow inside; the sleeve is connected with the hub through the upper flange and the lower flange and the bearing flange, and a shaft sleeve is further arranged between the sleeve and the main shaft.
Furthermore, a plurality of bearings are further arranged between the tower drum and the main shaft, an upper bearing end cover is arranged at the upper part of the tower drum, the uppermost bearing between the tower drum and the main shaft is axially positioned, and a support is further arranged on the uppermost bearing for axial positioning; a plurality of middle bearings between the tower drum and the main shaft are axially positioned through a support, and the support is fixedly connected with the tower drum; the lower part of the tower cylinder is provided with a lower bearing end cover, a bearing at the lowest part between the tower cylinder and the main shaft is axially positioned through the lower bearing end cover, the inner ring of the lower bearing end cover is directly connected with the tower cylinder, and the outer ring of the lower bearing end cover is directly connected with the tower base, so that the tower cylinder is fixedly connected with the tower base.
Furthermore, the transmission device comprises a transmission shaft, an upper guide bearing, a lower guide bearing, a locking sleeve, a planetary gear train speed increaser and a brake disc, wherein the main shaft is directly connected with the transmission shaft and rotates together with the transmission shaft, the transmission shaft is connected with the planetary gear train speed increaser through the locking sleeve, the brake discs are respectively assembled at the low-speed end and the high-speed end of the transmission shaft close to the planetary gear train speed increaser, a power generation system is arranged at the tail end of the transmission shaft, and the transmission shaft is positioned through the upper guide bearing and the lower guide bearing.
Furthermore, the tower base is fixedly connected with the heave plate, the tower base and the heave plate are respectively connected with the three buoys through three horizontal buoy support rods, the three horizontal buoy support rods are in a channel shape and are separated by 120 degrees, and the heave plate, the buoy support rods and the buoys form a floating foundation together.
The invention has the beneficial effects that: according to the invention, through the improvement of the blade form and the structure of the main shaft and the tower column, particularly through fixedly connecting the tower drum and the tower base on the floating foundation, the rotatable main shaft is connected with the transmission device and the power generation system in the tower base, so that the main shaft is supported to a certain extent when working, the restriction on the main shaft when working is increased, the strength and the stability of the whole structure are improved, and the design scheme of the large-scale floating fan is provided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the structure of the sleeve of the present invention.
In the figure: 1-main shaft, 2-stay bar, 3-impeller, 4-hub, 5-end cover, 6-bearing flange, 7-sleeve, 8-shaft sleeve, 9-tower, 10-upper bearing end cover, 11-bearing, 12-bracket, 13-lower bearing end cover, 14-tower base, 15-transmission shaft, 16-upper guide bearing, 17-lower guide bearing, 18-locking sleeve, 19-planetary gear train speed increaser, 20-brake disc, 21-power generation system, 22-float, 23-float stay bar, 24-heave plate, 25-cylinder, 26-upper flange and 27-lower flange.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the present invention is further described in detail below by way of embodiments with reference to the accompanying drawings; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Description of the drawings: the heave plate 24, the buoy brace 23 and the buoy 22 form a floating foundation together; the main shaft 1, the stay bar 2, the impeller 3, the hub 4, the end cover 5, the bearing flange 6, the sleeve 7 and the shaft sleeve 8 jointly form an upper fan.
The invention relates to a megawatt-level inner rotating shaft type floating spiral wind turbine which comprises an impeller 3 rotating around a vertical main shaft, a rotatable main shaft 1, a tower barrel 9, a tower base 14, a support rod 2 connecting the impeller 3 and the main shaft 1 and a floating foundation supporting an upper fan.
The upper part and the lower part of the impeller 3 are respectively connected with a support rod 2, one end of the support rod 2, which is far away from the vertical main shaft 1, is directly connected with the impeller 3, the other end of the support rod is fixedly connected with the main shaft 1 through a hub 4, a bearing flange 6 is arranged at the joint of the hub 4, the support rod 2 and the main shaft 1, and an end cover 5 is also arranged at the upper end of the hub 4 at the uppermost part of the main shaft 1.
A sleeve 7 is arranged between the main shaft 1 and the joint of the two layers of support rods 2, the sleeve 7 comprises a cylinder body 25, an upper flange 26 and a lower flange 27, and the cylinder body 25 is a metal cylindrical cylinder and is hollow inside; the sleeve 7 is connected to the hub 4 via the bearing flange 6 via an upper flange 26 and a lower flange 27, while a bushing 8 is provided between the sleeve 7 and the main shaft 1.
The lower half part of the main shaft 1 extends into a tower barrel 9, a plurality of bearings 11 are further arranged between the tower barrel 9 and the main shaft 1, an upper bearing end cover 10 is arranged at the upper part of the tower barrel 9, the uppermost bearing 11 between the tower barrel 9 and the main shaft 1 is axially positioned, and a support 12 is further arranged on the uppermost bearing 11 for axial positioning; a plurality of middle bearings 11 between the tower drum 9 and the main shaft 1 are also axially positioned through a support 12, and the support 12 is fixedly connected with the tower drum 9; the lower part of the tower tube 9 is provided with a lower bearing end cover 13, a bearing 11 at the lowest part between the tower tube 9 and the main shaft 1 is axially positioned through the lower bearing end cover 13, the inner ring of the lower bearing end cover 13 is directly connected with the tower tube 9, and the outer ring is directly connected with the tower base 14, so that the tower tube 9 is fixedly connected with the tower base 14.
The transmission device comprises a transmission shaft 15, an upper guide bearing 16, a lower guide bearing 17, a locking sleeve 18, a planetary gear train speed increaser 19 and a brake disc 20, wherein the main shaft 1 is directly connected with the transmission shaft 15 and rotates together, the transmission shaft 15 is connected with the planetary gear train speed increaser 19 through the locking sleeve 18, the brake disc 20 is respectively assembled at the low-speed end and the high-speed end of the transmission shaft 15 close to the planetary gear train speed increaser 19, a power generation system 21 is arranged at the tail end of the transmission shaft 15, and the transmission shaft 15 is positioned through the upper guide bearing 16 and the lower guide bearing 17.
The tower base 14 is fixedly connected with a heave plate 24, and the tower base 14 and the heave plate 24 are respectively connected with three buoys 22 through three horizontal buoy support rods 23; the three horizontal pontoon brace rods 23 are channel-shaped and are spaced by 120 degrees; the heave plate 24, the pontoon brace 23 and the pontoon 22 together form a floating foundation.

Claims (6)

1. A megawatt-level inner rotating shaft type floating spiral wind turbine is characterized in that: the wind power generation device comprises an impeller rotating around a vertical main shaft, a rotatable main shaft, a tower drum, a tower base, a support rod for connecting the impeller and the main shaft and a floating foundation for supporting an upper fan; the support rods are fixedly connected with the main shaft and are vertically arranged, a sleeve is arranged between the main shaft and the joint of the two layers of support rods, and a shaft sleeve is arranged in the sleeve to improve the strength of the main shaft between the joints of the main shaft and the support rods; the lower half part of the main shaft extends into a tower drum which is fixed on a tower base, and the tower base is fixedly connected on a floating foundation; the main shaft is connected with a transmission device in the tower base, the transmission device is connected with a power generation system, when the upper fan works, the impeller drives the main shaft to rotate, the tower drum and the tower base do not rotate as a base, and the main shaft is supported and fixed, so that the stability and the strength of the structure are improved.
2. The megawatt-level internal rotating shaft type floating spiral wind turbine as claimed in claim 1, wherein: the upper portion and the lower portion of impeller are connected with a supporting rod respectively, one end, far away from the vertical main shaft, of the supporting rod is directly connected with the impeller, the other end of the supporting rod is fixedly connected with the main shaft through a wheel hub, a bearing flange is arranged at the joint of the wheel hub, the supporting rod and the main shaft, and an end cover is further arranged at the upper end of the wheel hub on the top of the main shaft.
3. The megawatt-level internal rotating shaft type floating spiral wind turbine as claimed in claim 1, wherein: the sleeve comprises a cylinder body, an upper flange and a lower flange, wherein the cylinder body is a metal cylindrical cylinder and is hollow inside; the sleeve is connected with the hub through the upper flange and the lower flange through the bearing flange, and a shaft sleeve is further arranged between the sleeve and the main shaft.
4. The megawatt-level internal rotating shaft type floating spiral wind turbine as claimed in claim 1, wherein: a plurality of bearings are further arranged between the tower drum and the main shaft, an upper bearing end cover is arranged at the upper part of the tower drum, the uppermost bearing between the tower drum and the main shaft is axially positioned, and a support is further arranged on the uppermost bearing for axial positioning; a plurality of middle bearings between the tower drum and the main shaft are axially positioned through a support, and the support is fixedly connected with the tower drum; the lower part of the tower cylinder is provided with a lower bearing end cover, a bearing at the lowest part between the tower cylinder and the main shaft is axially positioned through the lower bearing end cover, the inner ring of the lower bearing end cover is directly connected with the tower cylinder, and the outer ring of the lower bearing end cover is directly connected with the tower base, so that the tower cylinder is fixedly connected with the tower base.
5. The megawatt-level internal rotating shaft type floating spiral wind turbine as claimed in claim 1, wherein: the transmission device comprises a transmission shaft, an upper guide bearing, a lower guide bearing, a locking sleeve, a planetary gear train speed increaser and a brake disc, wherein the main shaft is directly connected with the transmission shaft and rotates together with the transmission shaft, the transmission shaft is connected with the planetary gear train speed increaser through the locking sleeve, the brake discs are respectively assembled at the low-speed end and the high-speed end of the transmission shaft close to the planetary gear train speed increaser, a power generation system is arranged at the tail end of the transmission shaft, and the transmission shaft is positioned with the lower guide bearing through the upper guide bearing.
6. The megawatt-level internal rotating shaft type floating spiral wind turbine as claimed in claim 1, wherein: the tower base is fixedly connected with the heave plate, the tower base and the heave plate are respectively connected with three buoys through three horizontal buoy support rods, the three horizontal buoy support rods are channel-shaped and are separated by 120 degrees, and the heave plate, the buoy support rods and the buoys form a floating foundation together.
CN202210666791.6A 2022-06-14 2022-06-14 Megawatt-level inner rotating shaft type floating spiral wind turbine Pending CN114909255A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210666791.6A CN114909255A (en) 2022-06-14 2022-06-14 Megawatt-level inner rotating shaft type floating spiral wind turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210666791.6A CN114909255A (en) 2022-06-14 2022-06-14 Megawatt-level inner rotating shaft type floating spiral wind turbine

Publications (1)

Publication Number Publication Date
CN114909255A true CN114909255A (en) 2022-08-16

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ID=82770296

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210666791.6A Pending CN114909255A (en) 2022-06-14 2022-06-14 Megawatt-level inner rotating shaft type floating spiral wind turbine

Country Status (1)

Country Link
CN (1) CN114909255A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115653828A (en) * 2022-11-09 2023-01-31 广州远和船海研究院有限公司 Offshore floating wind power vertical axis fan and blade

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115653828A (en) * 2022-11-09 2023-01-31 广州远和船海研究院有限公司 Offshore floating wind power vertical axis fan and blade

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