CN111997842A - Installation method of tower and main machine of floating type double-wind-wheel wind generating set - Google Patents
Installation method of tower and main machine of floating type double-wind-wheel wind generating set Download PDFInfo
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- CN111997842A CN111997842A CN202010948882.XA CN202010948882A CN111997842A CN 111997842 A CN111997842 A CN 111997842A CN 202010948882 A CN202010948882 A CN 202010948882A CN 111997842 A CN111997842 A CN 111997842A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
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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
- F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
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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
- F03D13/22—Foundations specially adapted for wind motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/4433—Floating structures carrying electric power plants
- B63B2035/446—Floating structures carrying electric power plants for converting wind energy into electric energy
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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
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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
- Y02E10/727—Offshore wind turbines
Abstract
The invention relates to the technical field of offshore wind generating sets, and discloses a method for installing a tower frame and a main machine of a floating type double-wind-wheel wind generating set.
Description
Technical Field
The invention relates to the technical field of offshore wind generating sets, in particular to a method for installing a tower and a main machine of a floating type double-wind-wheel wind generating set.
Background
A tower structure of the floating wind driven generator with double wind wheels is provided with a Y-shaped inclined tower structure with an airfoil section, and a steel strand inhaul cable is required to be connected to the top of the tower to keep stability. In order to install the main frame, the tower and the floating foundation, a hoisting method suitable for double wind wheels is needed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a method for installing a tower and a main machine of a floating type double-wind-wheel wind generating set. The two cranes are symmetrically and synchronously installed on two sides, the stability of the double-wind turbine set in the hoisting process is guaranteed, the leaning tower is tensioned by adopting a steel strand temporary stay cable, and the stability of the leaning tower is guaranteed after the cranes unload hooks.
The purpose of the invention is realized by the following technical scheme: a method for installing a tower and a main machine of a floating type double-wind-wheel wind generating set comprises the following steps:
s11: sequentially hoisting a tower bottom section and a tower connecting section by using a main crane and an auxiliary crane, fixedly connecting the tower bottom section with a floating foundation and fixedly connecting the tower connecting section with the tower bottom section;
s21: the first section of the leaning tower comprises a first left support arm and a first right support arm which are respectively hoisted synchronously by two main cranes, the first left support arm and the first right support arm are clamped by a leaning tower hoist, and the first left support arm and the first right support arm are both in a downward inclined posture of 45 degrees by adjusting the length of a hanging strip or the posture of the leaning tower hoist after hoisting and are respectively connected with the tower frame connecting section by flanges;
s31: the second section of the leaning tower comprises a second left support arm and a second right support arm, a horizontal temporary steel strand penetrates through steel strand connection points at the top end of the second left support arm and the top end of the second right support arm on the ground, the outer side of the second left support arm is connected with a fixed connection point corresponding to the ground through a lateral temporary steel strand, the steel strand connection point at the outer side of the second right support arm is connected with a fixed point corresponding to the ground, the horizontal temporary steel strand and the lateral temporary steel strand are reserved with enough length and kept in a loose state, and then the leaning tower is hoisted by adopting the method in S21;
s41: after the second left support arm and the second right support arm are hoisted, the two main cranes do not loosen the hook, a person reaches the top end of the second section of the inclined tower from the inside of the tower frame along the crawling ladder, the horizontal temporary steel strand is tensioned to a specified tension value, then the temporary steel strand positioned in the lateral direction is tensioned to the specified tension value on the ground, and the left side and the right side are synchronously tensioned;
s51: after tensioning the temporary steel strand of the second section of the leaning tower, unloading the hook by a crane, and hoisting the third section of the leaning tower by adopting the method in S21;
s52: and adding a group of horizontal temporary steel strands at the top end of the third section of the leaning tower in the same way as the second section of the inhaul cable leaning tower, adding two groups of lateral temporary steel strands at two sides respectively, and unloading the hook of the crane after the temporary steel strands are tensioned.
S61: the two main cranes synchronously hoist the two main machines by adopting the main machine hoists, the floating foundation is connected with the main machines by adopting a plurality of groups of horizontal and lateral steel strands, the main machines are connected with a flange at the top of the third section of the inclined tower, the horizontal steel strands and the lateral steel strands are tensioned at the side of the floating foundation or the side of the main machine, and after a specified tension value is reached, the main machines are unhooked and hoisted.
Furthermore, a plurality of steel strand connecting points are arranged on two sides of the main machine, and a tower connecting flange is arranged at the bottom of the main machine.
Further, the floating foundation is Y-shaped, the floating foundation comprises three floating arms, one of the floating arms is longer than the other two floating arms, one ends of the three floating arms are connected to form an installation position, the bottom section of the tower frame is installed on the installation position, the other ends of the three floating arms extend outwards, the other ends of the three floating arms are provided with buoys, and the buoys are connected with the host through lateral steel strands.
Furthermore, the tower is Y-shaped and comprises a tower bottom section, a tower connecting section, a leaning tower first section, a leaning tower second section and a leaning tower third section; the tower bottom section is obliquely arranged on the floating foundation, the tower connecting section is Y-shaped, one end of the tower connecting section is connected with the tower bottom section, the other two ends of the tower connecting section extend outwards, the first section of the leaning tower is arranged on the two extending sections of the tower connecting section, the first section of the leaning tower, the second section of the leaning tower and the third section of the leaning tower are sequentially connected, and steel strand connecting points are arranged on the outer sides of the top ends of the second section of the leaning tower and the third section of the leaning tower.
Further, the leaning tower first section includes first left support arm and first right support arm, and the leaning tower second section includes second left support arm and second right support arm, and the leaning tower third section includes third left support arm and third right support arm, first left support arm, first right support arm, second left support arm, second right support arm, third left support arm and third right support arm all have the wing section, and its both ends all are provided with leaning tower flange, and wherein, the top of second left support arm, second right support arm, third left support arm and third right support arm all sets up the steel strand wires tie point.
Furthermore, the first left support arm and the first right support arm are hoisted by two main cranes and one auxiliary crane.
Furthermore, the second left support arm and the second right support arm are hoisted by two main cranes and one auxiliary crane.
Furthermore, the third left support arm and the third right support arm are hoisted by two main cranes and one auxiliary crane.
Compared with the prior art, the invention has the following advantages:
1. according to the tower frame and the main machine hoisting method of the floating type double-wind-wheel wind generating set, when the first section to the third section of the inclined tower and the main machine are hoisted, the two sides of the double-crane are symmetrically and synchronously installed, the stability of the double-wind-wheel wind generating set in the hoisting process is ensured, and meanwhile, the hoisting efficiency is improved. When the second section of the leaning tower and the third section of the leaning tower are hoisted, the leaning tower is tensioned by the temporary steel strand inhaul cable, the stability of the leaning tower is guaranteed after the hook of the crane is removed, the typhoon limit wind speed can be resisted, and the safety of a typhoon coming from a temporary unit when hoisting is not finished is guaranteed.
2. According to the invention, the steel strand connecting points are reserved during the design of the tower frame, and the steel strands can be tightened and disassembled from the inside of the tower frame, so that the hoisting operation is convenient, and the hoisting efficiency is obviously improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
figure 1 shows a schematic view of a first section of a hoisting leaning tower according to the invention;
figure 2 shows a schematic view of a second section of a hoisting leaning tower according to the invention;
FIG. 3 shows a partial side view of FIG. 2;
FIG. 4 shows a schematic representation of the steel strand connection point at the top end of the second section of the leaning tower;
figure 5 shows a schematic view of a third section of a hoisting leaning tower according to the invention;
FIG. 6 shows a partial side view of FIG. 5;
figure 7 shows a schematic view of a hoisting main machine according to the invention;
FIG. 8 shows a schematic diagram of a host enclosure;
FIG. 9 shows a top view of the host housing;
fig. 10 shows a schematic view of the floating type double wind wheel wind generating set after hoisting is completed;
in the figure, 1 is a tower bottom section; 2 is a tower connecting section; 3 is a first left support arm; 4 is a first right support arm; 5 is a second left support arm; 6 is a second right support arm; 7 is a third left support arm; 8 is a third right support arm; 9 is a horizontal temporary steel strand; 10 is a lateral temporary steel strand; 11 is a horizontal steel strand; 12 is a lateral steel strand; 13 is a steel strand connecting point; 14 is a tower connecting flange; 15 is a floating foundation; 16 is a float bowl; 17 is a main crane; 18 is a leaning tower sling; 19 is a leaning tower connecting flange; 20 is a host; 21 is a wind wheel; 22 is a tower.
Detailed Description
The invention is further illustrated by the following figures and examples.
The method for installing the tower and the main machine of the floating type double-wind-wheel wind generating set shown in the figures 1-7 comprises the following steps:
s11: sequentially hoisting a tower bottom section 1 and a tower connecting section 2 by using a main crane 17 and an auxiliary crane, fixedly connecting the tower bottom section 1 with a floating foundation 15, and fixedly connecting the tower connecting section 2 with the tower bottom section 1;
the tower bottom section 1 and the tower connecting section 2 can be hoisted by adopting the existing hoisting method, and the auxiliary crane is matched with the main crane to turn the hoisted parts when the auxiliary crane is used for hoisting from a horizontal state on the ground. The tower bottom section 1 and the tower connecting section 2 are connected by a flange bolt. The included angle between the tower bottom section 1 and the floating foundation 15 is 0-45 degrees.
S21: the first section of the leaning tower comprises a first left support arm 3 and a first right support arm 4 which are respectively hoisted synchronously by two main cranes 17, the first left support arm 3 and the first right support arm 4 are clamped by a leaning tower hoist 18, and the first left support arm 3 and the first right support arm 4 are both in a 45-degree downward inclined posture after hoisting by adjusting the length of a hanging strip or the posture of the leaning tower hoist and are respectively connected with the tower frame connecting section 2 by flanges;
the first left support arm 3 and the first right support arm 4 of the first section of the leaning tower are hoisted by two main cranes 17 and one auxiliary crane. The two main cranes 17 are not required to move simultaneously, one main crane 17 keeps a hoisting state after completing hoisting, and the two main cranes simultaneously release hooks after waiting for the other main crane 17 to complete hoisting. The crane form is not limited, and the requirement of the hoisting capacity can be met, and a wharf fixed crane or a rail type crane can be adopted, and a crawler crane or a tire crane and other mobile cranes can also be adopted. The first left support arm 3 and the first right support arm 4 are provided with wing-shaped sections (similar to airplane wings), the first left support arm 3 and the first right support arm 4 with the wing-shaped sections are clamped by the leaning tower hanger 18 in the hoisting process, the leaning tower hanger 18 can be selected from a single-blade leaning hoisting hanger, the clamping and the loosening of the hanger can be remotely controlled by a hydraulic device, and the existing mechanical clamping hanger can also be used.
S31: the second section of the leaning tower comprises a second left support arm 5 and a second right support arm 6, a horizontal temporary steel strand 9 penetrates through a steel strand connection point 13 at the top end of the second left support arm 5 and the top end of the second right support arm 6 on the ground, a lateral temporary steel strand 10 is used for connecting the outer side of the second left support arm 5 with a fixed connection point corresponding to the ground, a steel strand connection point 13 at the outer side of the second right support arm 6 is connected with a fixed point corresponding to the ground, the horizontal temporary steel strand 9 and the lateral temporary steel strand 10 are both reserved with enough length and kept in a loose state, and then the leaning tower is hoisted by adopting a method in S21, so that the temporary steel strand is prevented from being wound;
s41: after the second left support arm 5 and the second right support arm 6 are hoisted (the second left support arm 5 is connected with the first left support arm 3 through the leaning tower connecting flange 19, and the second right support arm 6 is connected with the first right support arm 4 through the leaning tower connecting flange 19), the two main cranes 17 are not hooked loosely, a person reaches the top end of the second section of the leaning tower from the inside of the tower along the crawling ladder, the horizontal temporary steel strand 11 is tensioned to a specified tension value, the temporary steel strand 10 positioned in the lateral direction is tensioned to the specified tension value on the ground, and the left side and the right side are synchronously tensioned;
the temporary steel strand is selected according to the required tension value, and a steel wire rope rigging with a sheath for anticorrosion protection can also be adopted. Three steel strand connecting points 13 are reserved at the top ends of the second left support arm 5 and the second right support arm 6 and correspond to the connection of three temporary steel strands (one horizontal temporary steel strand and two lateral steel strands). As shown in fig. 4, the steel strand connection point 13 is cylindrical with two open ends, one open end is communicated with the inside of the support arm of the tower (facilitating the tensioning and detaching of the steel strand from the inside of the tower), and the other open end is smaller to allow the steel strand to pass through, and the steel strand connection point is locked by using a locking device (the locking device is similar to a nut with a diameter larger than the diameter of the connection point opening to prevent the steel strand from falling off the connection point). The connection of the steel strands is not limited to this form, and may also take the form of welded lugs or lug plate pins. The horizontal temporary steel strands 9 can be one group or two groups arranged in parallel, and the lateral temporary steel strands 10 can be one group or two groups distributed in a crossed mode on each side, and specific selection is determined according to strength calculation results.
S51: after tensioning the temporary steel strand of the second section of the leaning tower, unloading the hook by using a crane, and hoisting a third section of the leaning tower by using the method in S21, wherein the third section of the leaning tower comprises a third left support arm and a third right support arm; the third left support arm, the third right support arm, the second left support arm and the second right support arm are identical in structure.
S52: and adding a group of horizontal temporary steel strands at the top end of the third section of the leaning tower in the same way as the second section of the inhaul cable leaning tower, adding two groups of lateral temporary steel strands at two sides respectively, and unloading the hook of the crane after the temporary steel strands are tensioned.
The hoisting mode of the third section of the leaning tower can be the same as that of the second section of the leaning tower, and during specific implementation, according to the strength calculation result, if the strength of the third section of the leaning tower can bear dead weight and wind load, the temporary steel strand installed on the third section of the leaning tower can be cancelled, and after the installation, the crane directly unloads the hook.
S61: the two main cranes 17 synchronously hoist the two main cranes 20 by adopting the main crane slings, the floating foundation 15 is connected with the main cranes 20 by adopting a plurality of groups of horizontal and lateral steel strands, the two main cranes 20 are respectively connected with the top flanges of the third left support arm 7 and the third right support arm 8, the horizontal steel strands and the lateral steel strands are tensioned at the floating foundation side or the main crane side, and after a specified tension value is reached, the main cranes are unhooked and hoist the floating foundation.
Before the main machines are hoisted, the two main machines are connected by adopting a horizontal steel strand on the ground, one end of the lateral steel strand is connected with the shell of the main machine, the other end of the lateral steel strand is connected with a corresponding connecting point of the floating foundation, the lateral steel strand is not tensioned, enough length is reserved, and the hoisting process that the steel strand take-up and pay-off device is matched with the main machines can be increased in the floating foundation.
By the hoisting method, the installation of the tower frame and the host of the inclined tower guyed double-wind-wheel generator set can be simply finished, the stability of hoisting the inclined tower is ensured by installing the temporary steel strand guy, and the method is suitable for the installation structure of the double-wind-wheel floating generator set.
As shown in fig. 10, after the tower 22 and the main frame 20 are hoisted, the horizontal temporary steel strands 9 and the lateral temporary steel strands 10 are completely removed, and the floating foundation 15 is dragged into a predetermined sea area to be connected with the mooring system.
As shown in fig. 8 and 9, a plurality of steel strand connection points 13 are formed on both sides of the main unit housing, and a tower connection flange 14 is provided at the bottom of the main unit 20.
The floating foundation 15 is Y font, floating foundation 15 includes three float arms, and the length of one of them float arm is longer than two in addition, and the one end of three float arms is connected to form the installation position, and the pylon bottom segment is installed on the installation position, and the other end of three float arms outwards extends, and flotation pontoon 16 is all installed to the other end of three float arms, and flotation pontoon 16 is connected with the host computer through side direction steel strand wires. One longer float arm is located upwind, and the other two shorter float arms are located downwind.
The tower 22 is Y-shaped and comprises a tower bottom section 1, a tower connecting section 2, a leaning tower first section, a leaning tower second section and a leaning tower third section; the tower bottom section 1 is obliquely arranged on a floating foundation, the tower connecting section 2 is Y-shaped, one end of the tower connecting section is connected with the tower bottom section 1, the other two ends of the tower connecting section extend outwards, the first section of the leaning tower is arranged on the two extending sections of the tower connecting section 2, the first section of the leaning tower, the second section of the leaning tower and the third section of the leaning tower are sequentially connected, and steel strand connecting points are arranged on the outer sides of the top ends of the second section of the leaning tower and the third section of the leaning tower.
The inclination direction of the tower bottom section 1 is opposite to the floating arm positioned in the upwind direction, and the included angle between the two is more than or equal to 135 degrees. After tension is applied to the steel strand wires connected with the longer floating arm, overlarge bending moment is generated at the bottom of the tower bottom section 1, meanwhile, the gravity center moves backwards, the wind generating set is beneficial to integrally rotating around the anchor point of the floating arm, and passive yawing wind alignment is achieved.
The leaning tower is first section including first left support arm 3 and first right support arm 4, and leaning tower second section includes second left support arm 5 and second right support arm 6, and leaning tower third section includes third left support arm 7 and third right support arm 8, first left support arm, first right support arm, second left support arm, second right support arm, third left support arm and third right support arm all have the wing section, and its both ends all are provided with leaning tower flange 14, and the support arm of the left and right sides adopts leaning tower flange to connect, and wherein, the top of second left support arm, second right support arm, third left support arm and third right support arm all sets up the steel strand wires tie point.
The above-mentioned embodiments are preferred embodiments of the present invention, and the present invention is not limited thereto, and any other modifications or equivalent substitutions that do not depart from the technical spirit of the present invention are included in the scope of the present invention.
Claims (7)
1. A method for installing a tower and a main machine of a floating type double-wind-wheel wind generating set is characterized by comprising the following steps:
s11: sequentially hoisting a tower bottom section and a tower connecting section by using a main crane and an auxiliary crane, fixedly connecting the tower bottom section with a floating foundation and fixedly connecting the tower connecting section with the tower bottom section;
s21: the first section of the leaning tower comprises a first left support arm and a first right support arm which are respectively hoisted synchronously by two main cranes, the first left support arm and the first right support arm are clamped by a leaning tower hoist, and the first left support arm and the first right support arm are both in a downward inclined posture of 45 degrees by adjusting the length of a hanging strip or the posture of the leaning tower hoist after hoisting and are respectively connected with the tower frame connecting section by flanges;
s31: the second section of the leaning tower comprises a second left support arm and a second right support arm, a horizontal temporary steel strand penetrates through steel strand connection points at the top end of the second left support arm and the top end of the second right support arm on the ground, the outer side of the second left support arm is connected with a fixed connection point corresponding to the ground through a lateral temporary steel strand, the steel strand connection point at the outer side of the second right support arm is connected with a fixed point corresponding to the ground, the horizontal temporary steel strand and the lateral temporary steel strand are reserved with enough length and kept in a loose state, and then the leaning tower is hoisted by adopting the method in S21;
s41: after the second left support arm and the second right support arm are hoisted, the two main cranes do not loosen the hook, a person reaches the top end of the second section of the inclined tower from the inside of the tower frame along the crawling ladder, the horizontal temporary steel strand is tensioned to a specified tension value, then the temporary steel strand positioned in the lateral direction is tensioned to the specified tension value on the ground, and the left side and the right side are synchronously tensioned;
s51: after tensioning the temporary steel strand of the second section of the leaning tower, unloading the hook by a crane, and hoisting the third section of the leaning tower by adopting the method in S21;
s61: and after the main machine is connected with a flange at the top of the third section of the inclined tower, tensioning the horizontal steel strands and the lateral steel strands at the floating foundation side or the main machine side, and after a specified tension value is reached, the main machine unloads the hook, and the hoisting is finished.
2. The method of installing a tower and a main frame of a floating double-rotor wind turbine generator system according to claim 1, wherein: further comprising S52: and (3) adding horizontal temporary steel strands at the top end of the third section of the leaning tower in the same way as the second section of the inhaul cable leaning tower, adding lateral temporary steel strands at two sides respectively, and unloading hooks of the crane after the temporary steel strands are tensioned.
3. The method of installing a tower and a main frame of a floating double-rotor wind turbine generator system according to claim 1, wherein: a plurality of steel strand connecting points are arranged on two sides of the main machine, and a tower connecting flange is arranged at the bottom of the main machine.
4. The method of installing a tower and a main frame of a floating double-rotor wind turbine generator system according to claim 1, wherein: the utility model discloses a floating foundation, including three floating arms, floating foundation is connected to the other two, and the other end of three floating arms is outwards extended, and the flotation pontoon is all installed to the other end of three floating arms, and the flotation pontoon passes through the side direction steel strand wires and is connected with the host computer.
5. The method of installing a tower and a main frame of a floating double-rotor wind turbine generator system according to claim 1, wherein: the tower is Y-shaped and comprises a tower bottom section, a tower connecting section, a first inclined tower section, a second inclined tower section and a third inclined tower section; the tower bottom section is obliquely arranged on the floating foundation, the tower connecting section is Y-shaped, one end of the tower connecting section is connected with the tower bottom section, the other two ends of the tower connecting section extend outwards, the first section of the leaning tower is arranged on the two extending sections of the tower connecting section, the first section of the leaning tower, the second section of the leaning tower and the third section of the leaning tower are sequentially connected, and steel strand connecting points are arranged on the outer sides of the top ends of the second section of the leaning tower and the third section of the leaning tower.
6. The method of installing a tower and a main frame of a floating double-rotor wind turbine generator system according to claim 5, wherein: the utility model discloses a leaning tower, including leaning tower first section, leaning tower second section includes left support arm of second and right support arm of second, and leaning tower third section includes left support arm of third and right support arm of third, left support arm of first left side, right support arm of first right, left support arm of second, right support arm of second, left support arm of third and right support arm of third all have the wing section, and its both ends all are provided with leaning tower flange, and wherein, the top of left support arm of second, right support arm of second, left support arm of third and right support arm of third all sets up the steel strand wires tie point.
7. The method of installing a tower and a main frame of a floating double wind turbine wind generating set according to claim 1, wherein: the first left support arm and the first right support arm are hoisted by two main cranes and one auxiliary crane.
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| CN202010948882.XA CN111997842B (en) | 2020-09-10 | 2020-09-10 | Installation method of tower and main machine of floating type double-wind-wheel wind generating set |
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| CN202010948882.XA CN111997842B (en) | 2020-09-10 | 2020-09-10 | Installation method of tower and main machine of floating type double-wind-wheel wind generating set |
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| CN106677995A (en) * | 2016-07-12 | 2017-05-17 | 中交第三航务工程局有限公司 | Offshore wind driven generator split installation construction method |
| EP3388664A1 (en) * | 2017-04-11 | 2018-10-17 | XEMC Darwind BV | Buoyant structure carrying wind turbines |
| US20200141388A1 (en) * | 2017-06-12 | 2020-05-07 | Siemens Gamesa Renewable Energy A/S | Offshore wind turbine installation arrangement |
| CN109838351A (en) * | 2017-11-24 | 2019-06-04 | 黄灿光 | Windy power generator floating is automatically to wind water wind power generating device |
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| CN111997842B (en) | 2021-07-06 |
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