CN111021393A - Floating type fan foundation, fan and construction method thereof - Google Patents

Floating type fan foundation, fan and construction method thereof Download PDF

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Publication number
CN111021393A
CN111021393A CN201911113073.0A CN201911113073A CN111021393A CN 111021393 A CN111021393 A CN 111021393A CN 201911113073 A CN201911113073 A CN 201911113073A CN 111021393 A CN111021393 A CN 111021393A
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CN
China
Prior art keywords
floating
buoyancy
buoyancy tank
tower
assembly
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
CN201911113073.0A
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Chinese (zh)
Inventor
陈嘉豪
裴爱国
任灏
刘博�
杨敏冬
马兆荣
刘晋超
元国凯
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.)
China Energy Construction Group Guangdong Electric Power Design Institute Co Ltd
Original Assignee
China Energy Construction Group Guangdong Electric Power Design Institute Co Ltd
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 China Energy Construction Group Guangdong Electric Power Design Institute Co Ltd filed Critical China Energy Construction Group Guangdong Electric Power Design Institute Co Ltd
Priority to CN201911113073.0A priority Critical patent/CN111021393A/en
Publication of CN111021393A publication Critical patent/CN111021393A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • E02D27/42Foundations for poles, masts or chimneys
    • E02D27/425Foundations for poles, masts or chimneys specially adapted for wind motors masts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B2035/4433Floating structures carrying electric power plants
    • B63B2035/446Floating structures carrying electric power plants for converting wind energy into electric energy

Abstract

The invention relates to a floating type fan foundation, a fan and a construction method, wherein the floating type fan foundation comprises: a tower support; the upright column type buoyancy tanks are arranged below the tower barrel supporting piece and are uniformly distributed by taking the tower barrel supporting piece as the center; the upright column type buoyancy tank comprises a bottom buoyancy tank and an upper buoyancy tank arranged on the bottom buoyancy tank, and the cross section of the bottom buoyancy tank is larger than that of the upper buoyancy tank; a transverse supporting piece is connected between every two adjacent bottom buoyancy tanks, and the bottom buoyancy tanks are also connected with anchor chains; an inclined support piece is connected between the upper buoyancy tank and the tower tube support piece. Above-mentioned float formula fan foundation, the cross section of bottom flotation tank is greater than the cross section of upper portion flotation tank for the cross section of stand type flotation tank personally submits cascaded change, makes the bottom flotation tank can provide great buoyancy, helps reducing the load effort of wave flow to the upper portion flotation tank, thereby is favorable to increasing the vertical motion damping of floating formula fan foundation, has optimized the hydrodynamic force performance of floating formula fan foundation.

Description

Floating type fan foundation, fan and construction method thereof
Technical Field
The invention relates to the technical field of wind power generation, in particular to a floating type fan foundation, a fan and a construction method.
Background
With the increasing global demand for clean renewable energy, wind power is currently one of the most commercialized renewable clean energy technologies and is in a state of vigorous development, and wind power gradually moves from land to sea and from offshore to open sea. However, the use of fixed offshore wind turbines is limited to sea areas with water depth of 50m due to technical and economic problems, and floating wind turbine technology has attracted much attention in recent years in order to obtain higher-quality wind energy and expand the space resources for wind energy development.
The basic design of the offshore floating wind turbine needs to be considered from three aspects, one is that the offshore floating wind turbine has better hydrodynamic performance, including better stability, and has smaller response to loads such as waves in a running sea area; the other is that the basic design is as simple and reliable as possible, which includes better strength and fatigue properties; the last is the fundamental economy, and a competitive and sustainable product must be competitive in the marketplace. The structural design of the traditional offshore floating type wind turbine foundation is poor, the hydrodynamic performance is poor, the air gap design is insufficient, and the problems of manufacturing difficulty and structural fatigue caused by too many truss structures are obvious.
Disclosure of Invention
Therefore, it is necessary to provide a floating type wind turbine foundation with a simple structure, good hydrodynamic performance and a large air gap design, and a floating type wind turbine and a construction method thereof, in order to solve the problems of the conventional technology.
A floating wind turbine foundation comprising:
a tower support; and
the upright column type buoyancy tanks are arranged below the tower drum supporting piece and are uniformly distributed by taking the tower drum supporting piece as a center; the upright column type buoyancy tank comprises a bottom buoyancy tank and an upper buoyancy tank arranged on the bottom buoyancy tank, and the cross section of the bottom buoyancy tank is larger than that of the upper buoyancy tank; a transverse supporting piece is connected between every two adjacent bottom buoyancy tanks, and each bottom buoyancy tank is also connected with an anchor chain; and an inclined support piece is connected between the upper buoyancy tank and the tower tube support piece.
According to the floating type fan foundation, the bottom buoyancy tank is mainly used for providing buoyancy, the upper buoyancy tank is used for providing buoyancy and determining the water line surface of the floating type fan foundation, and the floating type fan foundation plays an important role in static inclination stability and wave resistance of the floating type fan foundation; the cross section of the bottom buoyancy tank is larger than that of the upper buoyancy tank, so that the cross section of the upright column type buoyancy tank is changed in a stepped manner, namely the cross section of the bottom buoyancy tank is larger, so that the bottom buoyancy tank can provide larger buoyancy, the cross section of the upper buoyancy tank is smaller, the load acting force of wave flow on the upper buoyancy tank is reduced, and the cross sections of the bottom buoyancy tank and the upper buoyancy tank form stepped change, so that the vertical motion damping of the floating fan foundation is increased, and the hydrodynamic performance of the floating fan foundation is optimized; the floating type fan foundation is simple in overall structure, few in rod piece structure, good in structural fatigue resistance, good in economical efficiency and expansibility, and capable of effectively reducing manufacturing difficulty; and the inclined support piece supports the tower drum support piece in an inclined mode, so that the air gap of the floating type fan foundation is effectively increased.
In one embodiment, the number of the upright buoyancy tanks is three, and the three upright buoyancy tanks are distributed in a triangular shape around the tower support.
In one embodiment, the spar-type pontoons further include a heave plate, and the bottom pontoons are disposed on the heave plate.
In one embodiment, the heave plate has a cross-section greater than the bottom pontoon.
In one embodiment, a plurality of rib plates are connected between the heave plate and the bottom buoyancy tank of the upright post type buoyancy tank, and the plurality of rib plates are uniformly distributed around the bottom buoyancy tank.
The utility model provides a float formula fan, includes the fan body and the aforesaid float formula fan basis, the fan body install tower section of thick bamboo support piece is last.
In one embodiment, the wind turbine body comprises a tower, an electromechanical assembly and a blade assembly, wherein the bottom end of the tower is connected with the tower support, the electromechanical assembly is mounted on the top end of the tower, and the blade assembly is connected with the electromechanical assembly.
A construction method of a floating fan comprises the following steps:
step S10: respectively installing a plurality of bottom buoyancy tanks on a plurality of heave plates, sequentially connecting the bottom buoyancy tanks end to end through the transverse supports, and connecting the bottom buoyancy tanks and the heave plates through rib plates to form the annular body;
step S20: respectively installing a plurality of upper buoyancy tanks on the bottom buoyancy tank of the annular body to form a first half assembly body;
step S30: connecting the tower support to the upper buoyancy tank of the first semi-assembly through the oblique support to form a second semi-assembly;
step S40: mounting the fan body on a tower support forming a second half assembly to form an assembly;
step S50: transporting the assembly to a preset work deployment site;
step S60: anchoring the assembly through an anchor chain to form a floating fan;
step S70: and adjusting the ballast of the floating fan until the floating fan reaches the preset draft.
In one embodiment, steps S10-S40 are performed on a dock.
In one embodiment, the step S40 is performed on a dock near a preset job deployment site.
Drawings
FIG. 1 is a schematic structural view of a floating wind turbine according to the present invention;
FIG. 2 is a schematic structural view of a floating wind turbine foundation of the floating wind turbine of FIG. 1;
fig. 3 to 9 are flowcharts of a construction method of the floating fan according to the present invention.
The meaning of the reference symbols in the drawings is:
the floating type wind turbine comprises a floating type wind turbine foundation 100, a tower support 10, a first safety fence 11, a column type buoyancy tank 20, a bottom buoyancy tank 21, an upper buoyancy tank 22, a connecting piece 23, a second safety fence 24, a heave plate 25, a ribbed plate 26, a transverse support 30, an anchor chain 40, an inclined support 50, an escalator 51, a wind turbine body 200, a tower 210, an electromechanical assembly 220, a blade assembly 230, a hub 240, a blade 250, a ring body 300, a first semi-assembly 400, a second semi-assembly 500, a third semi-assembly 600, a third semi-assembly 700, an assembly 800 and a floating type wind turbine 900.
Detailed Description
In order that the invention may be more fully understood, reference will now be made to the following description. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Referring to fig. 1 to 2, a floating wind turbine foundation 100 and a wind turbine body 200 installed on the floating wind turbine foundation 100 according to an embodiment of the present invention are shown. The floating wind turbine foundation 100 includes a tower support 10 and a plurality of spar-type pontoons 20. The fan body 200 is mounted on the tower support 10. The plurality of upright column type buoyancy tanks 20 are arranged below the tower tube support member 10 and are uniformly distributed with the tower tube support member 10 as the center; specifically, the column-type buoyancy tank 20 includes a bottom buoyancy tank 21 and an upper buoyancy tank 22 disposed on the bottom buoyancy tank 21, and the cross section of the bottom buoyancy tank 21 is larger than that of the upper buoyancy tank 22, so that the cross section of the column-type buoyancy tank 20 is stepped; a transverse support 30 is connected between two adjacent bottom buoyancy tanks 21, the bottom buoyancy tanks 21 are also connected with anchor chains 40, and the anchor chains 40 are used for connecting the seabed; an angled support 50 is connected between the upper pontoon 22 and the tower support 10.
Above-mentioned floating fan foundation 100, tower section of thick bamboo support piece 10 are used for connecting fan body 200, and tower section of thick bamboo support piece 10 is connected with the upper portion flotation tank 22 of a plurality of stand type flotation tanks 20 through slant support piece 50 respectively, and stand type flotation tank 20 is used for floating on the surface of water, and stand type flotation tank 20 passes through anchor chain 40 and is connected with the seabed for floating fan foundation 100 realizes the motion and the space constraint of certain degree.
The bottom buoyancy tank 21 of the floating fan foundation 100 is mainly used for providing buoyancy, and the upper buoyancy tank 22 is not only used for providing buoyancy, but also used for determining the waterline surface of the floating fan foundation 100, so that the buoyancy and the waviness resistance of the floating fan foundation 100 are important; the cross section of the bottom buoyancy tank 21 is larger than that of the upper buoyancy tank 22, that is, the cross section of the bottom buoyancy tank 21 is larger, so that the bottom buoyancy tank 21 can provide larger buoyancy, the cross section of the upper buoyancy tank 22 is smaller, which is beneficial to reducing the load acting force of wave flow on the upper buoyancy tank 22, that is, is beneficial to reducing the wave flow load received near the still water surface of the floating fan foundation 100, the cross section of the buoyancy tank with the stepped change is beneficial to increasing the vertical motion damping of the floating fan foundation 100, and the hydrodynamic performance of the floating fan foundation 100 is optimized; this float formula fan foundation 100's overall structure is simple, and the member structure is few, reduces effectively and makes the degree of difficulty, and the structure antifatigue characteristic is good, has fine economic nature and expansibility.
Supporting tower support member 10 in an inclined manner via diagonal support member 50 effectively increases the air gap of floating wind turbine foundation 100 and effectively reduces or avoids the slamming of waves into the bottom of tower support member 10. In addition, the inclined support member 50 can also improve the vertical bearing capacity of the floating fan foundation 100 to the fan body 200, increase the stability of the floating fan foundation 100, and is beneficial to saving material cost.
Referring to fig. 1, specifically, wind turbine body 200 includes a tower 210, an electromechanical assembly 220, and a blade assembly 230, where a bottom end of tower 210 is connected to tower support 10; further, the bottom end of tower 210 is flanged to tower support 10. Electromechanical assembly 220 is mounted to the top end of tower 210, and electromechanical assembly 220 is rotatable about the central axis of tower 210 for yaw motion. The blade assembly 230 is connected with the electromechanical assembly 220, the blade assembly 230 comprises a hub 240 connected with the electromechanical assembly 220 and blades 250 connected with the hub 240, and the blades 250 rotate under the blowing of sea wind to capture wind energy.
In some embodiments, the tower support 10 is a cylindrical structure, and the cross-sectional dimensions of the tower support 10 match the diameter dimensions of the bottom end of the tower 210. Referring to fig. 2, further, a first safety fence 11 is disposed at the top end of the tower support 10, so as to effectively ensure the safety of an operator when operating on the tower support 10.
In the present embodiment, the number of the upright buoyancy tanks 20 is three, and the three upright buoyancy tanks 20 are distributed in a triangular shape around the tower support 10; specifically, the three upright column type buoyancy tanks 20 are distributed in a regular triangle, and have good stability. It will be appreciated that the number of bottom pontoons 21 and upper pontoons 22 is three. Of course, in other embodiments, the number of the upright buoyancy tanks 20 may be four, five, six, etc., and may be designed according to actual requirements.
In some embodiments, the bottom pontoon 21, the upper pontoon 22 and the transverse supports 30 are all manufactured from steel.
The cross-section of the bottom buoyancy tank 21 may be of various shapes, e.g. the cross-section of the bottom buoyancy tank 21 may be circular, square, etc. Specifically to in this embodiment, the cross section of bottom flotation tank 21 is the polygon, is favorable to reducing the manufacturing degree of difficulty, practices thrift the cost, simultaneously, is favorable to improving the hydrodynamic damping of the yawing motion of floating fan basis 100, has effectively optimized the yawing motion performance of floating fan basis 100. Further, the cross section of the bottom buoyancy tank 21 may be a regular pentagon, a regular hexagon, or the like.
The upper buoyancy tank 22 and the bottom buoyancy tank 21 are coaxially provided. The cross-section of the upper buoyancy tank 22 may also be of various shapes, e.g., the cross-section of the upper buoyancy tank 22 may be circular, square, etc. In particular, in this embodiment, the upper buoyancy tank 22 is circular in cross-section to further reduce the loading forces of the wave currents on the upper buoyancy tank 22.
In some embodiments, the bottom buoyancy tank 21 is a hollow structure, a plurality of first bulkheads are disposed inside the bottom buoyancy tank 21, each first bulkhead is provided with a first horizontal reinforcing rib and a first vertical reinforcing rib, the first bulkhead, the first horizontal reinforcing rib and the first vertical reinforcing rib are beneficial to reinforcing the structure of the bottom buoyancy tank 21, the first bulkhead, the first horizontal reinforcing rib and the first vertical reinforcing rib divide the internal space of the bottom buoyancy tank 21 into a plurality of first compartments, the ballast of the first compartments is fixed, and the ballast in the first compartments can be selected from materials such as water, concrete, ore sand and gravel. Upper portion flotation tank 22 also is hollow structure, the inside a plurality of second bulkheads that are provided with of upper portion flotation tank 22, be provided with horizontal strengthening rib of second and the vertical strengthening rib of second on every second bulkhead wall, the second bulkhead, horizontal strengthening rib of second and the vertical strengthening rib of second are favorable to strengthening upper portion flotation tank 22's structure, and the second bulkhead, horizontal strengthening rib of second and the vertical strengthening rib of second separate into a plurality of second cabins with upper portion flotation tank 22's inner space, the ballast in the second cabin is liquid, like water, the ballast in the second cabin is adjustable, thereby can be according to the operating condition of difference, adjust the ballast in second cabin until floating formula fan basis 100 reaches predetermined draft.
Further, the vertical length of upper portion flotation tank 22 is greater than the vertical length of bottom flotation tank 21, and because the ballast of first cabin is fixed, the ballast of second bulkhead is adjustable to through setting up the vertical length of upper portion flotation tank 22 to be greater than the vertical length of bottom flotation tank 21, can effectively improve the high adjustment range of draft of floating fan basis 100.
The cross support 30 is rectangular in shape, and the cross support 30 is horizontally disposed, i.e. the cross support 30 is disposed perpendicular to the bottom buoyancy tank 21. In some embodiments, the transverse support member 30 is also a hollow structure, and the transverse support member 30 is internally provided with transverse bulkheads and longitudinal stiffeners, which divide the internal space of the transverse support member 30 into a plurality of ballast tanks, wherein the ballast in the ballast tanks is liquid, such as water, and the ballast of the ballast tanks can be adjusted.
In the present embodiment, since the number of the bottom buoyancy tanks 21 is three, and thus the number of the lateral supports 30 is also three, the three lateral supports 30 are respectively connected end to end between two adjacent bottom buoyancy tanks 21, and are distributed in an equilateral triangle.
In some embodiments, bottom pontoon 21 is provided with connector 23, connector 23 is provided on the upper end face of bottom pontoon 21, one end of anchor chain 40 is connected to connector 23, and the other end of anchor chain 40 is used to connect to the seabed. Further, chain 40 is a gravity catenary mooring or tension chain. In the present embodiment, since the number of bottom pontoons 21 is three and thus the number of anchor chains 40 is also three or six, when the number of anchor chains 40 is six, each bottom pontoons 21 is connected with two anchor chains 40.
In some embodiments, a ladder stand, a boarding facility, and a collision avoidance facility are installed on the outer circumferential side of the upper buoyancy tank 22, and a second safety fence 24 is provided on the top end of the upper buoyancy tank 22, which effectively ensures the safety of an operator when operating on the top end of the upper buoyancy tank 22.
In some embodiments, the spar type pontoons 20 further include heave plates 25, the bottom pontoons 21 are positioned on the heave plates 25, and the bottom pontoons 21 are positioned coaxially with the heave plates 25, the positioning of the heave plates 25 further optimizing the vertical motion performance of the floating wind turbine foundation 100. Further, the cross section of the heave plate 25 is larger than that of the bottom buoyancy tank 21, so that the upright column type buoyancy tank 20 is in multi-stage stepped change, and the vertical motion damping of the floating fan foundation 100 is further increased. Specifically, the cross section of the heave plate 25 is also polygonal, i.e., the heave plate 25 is a polygonal plate-shaped body, and the number of sides of the cross section of the heave plate 25 is the same as the number of sides of the cross section of the bottom buoyancy tank 21 and the sides are aligned in orientation.
Further, a plurality of ribs 26 are connected between the heave plate 25 and the bottom buoyancy tank 21 of the upright buoyancy tank 20, and the plurality of ribs 26 are uniformly distributed around the bottom buoyancy tank 21. Specifically, one side of the rib 26 is connected to the outer peripheral side of the bottom buoyancy tank 21, the other side of the rib 26 is connected to the upper end surface of the heave plate 25, and the rib 26 is advantageous in enhancing the connection stability of the heave plate 25 to the bottom buoyancy tank 21.
The inclined support 50 is obliquely arranged relative to the tower support 10 and the upper buoyancy tank 22, that is, one end of the inclined support 50 is connected to the peripheral side surface of the tower support 10, and the other end of the inclined support 50 is connected to the peripheral side surface of the upper buoyancy tank 22, so that the upper part of the floating fan foundation 100 is conically arranged, and the inclined support 50 is a rectangular hollow structure; further, an escalator 51 is installed on an upper end surface of the diagonal support member 50, so that an operator can safely move on the diagonal support member 50.
Referring to fig. 3 to 9, the present invention further provides a construction method of a floating fan, based on the floating fan, the construction method of the floating fan includes the following steps:
step S10: referring to fig. 3, a plurality of bottom buoyancy tanks 21 are respectively installed on a plurality of heave plates 25, the plurality of bottom buoyancy tanks 21 are sequentially connected end to end through transverse supports 30, and the bottom buoyancy tanks 21 and the heave plates 25 are additionally connected through a rib plate 26 to form a ring body 300;
step S20: referring to fig. 4, a plurality of upper buoyancy tanks 22 are respectively installed on the bottom buoyancy tank 21 of the annular body 300 to form a first half assembly 400;
step S30: referring to FIG. 5, the tower support 10 is connected to the upper buoyancy tank 22 of the first half-assembly 400 via the diagonal support 50 to form a second half-assembly 500;
step S40: referring to FIG. 8, the wind turbine body 200 is mounted on the tower support 10 of the second half-assembly 500 to form an assembly 800;
step S50: transporting the assembly 800 to a preset job deployment site;
step S60: referring to fig. 9, the assembly 800 is anchored by anchor chains to form a floating wind turbine 900;
step S70: and adjusting the ballast of the floating fan until the floating fan reaches the preset draft.
It should be noted that steps S10 to S30 are all performed on the dock. Before step S40, the method further includes the step of transporting the second half assembly 500, tower 210, electromechanical assembly 220, and blade assembly 230 to a dock near a predetermined work deployment site; i.e., step S40 is performed on the dock near the preset job deployment site.
In some embodiments, the specific steps of step S40 are:
step S41: referring to FIG. 6, the bottom end of the tower 210 is coupled to the tower support 10 of the second half-assembly 500 to form a third half-assembly 600. Specifically, the bottom end of tower 210 is flanged to tower support 10.
Step S42: referring to FIG. 7, the electromechanical assembly 220 is mounted on the top end of the tower 210 of the third half-assembly 600 to form a fourth half-assembly 700.
Step S43: referring to fig. 8, blade assembly 230 is coupled to electromechanical assembly 220 of fourth subassembly half 700 to form an assembly 800.
In step S50, the assembly 800 is wet towed offshore by a tug boat to a preset work deployment site.
According to the construction method of the floating fan, the second half assembly 500 is assembled on a dock, then the second half assembly 500, the tower 210, the electromechanical assembly 220 and the blade assembly 230 are transported to a wharf close to a preset working deployment site, and the second half assembly 500, the tower 210, the electromechanical assembly 220 and the blade assembly 230 can be transported separately, so that the occupied space is effectively reduced, and the transportation difficulty and the transportation cost are reduced; and the second semi-assembly 500, the tower drum 210, the electromechanical assembly 220 and the blade assembly 230 are assembled on the wharf close to the preset working deployment site to form the assembly 800, and then the assembly 800 is transported to the preset working deployment site, so that the working strength and the construction time are effectively reduced, and the construction cost is reduced compared with the assembly on the preset working deployment site.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A floating fan foundation, comprising:
a tower support; and
the upright column type buoyancy tanks are arranged below the tower drum supporting piece and are uniformly distributed by taking the tower drum supporting piece as a center; the upright column type buoyancy tank comprises a bottom buoyancy tank and an upper buoyancy tank arranged on the bottom buoyancy tank, and the cross section of the bottom buoyancy tank is larger than that of the upper buoyancy tank; a transverse supporting piece is connected between every two adjacent bottom buoyancy tanks, and each bottom buoyancy tank is also connected with an anchor chain; and an inclined support piece is connected between the upper buoyancy tank and the tower tube support piece.
2. A floating wind turbine foundation according to claim 1 wherein the number of upright pontoons is three, the three upright pontoons being triangularly distributed around the tower support.
3. The floating wind turbine foundation of claim 1 wherein the column style pontoons further comprise a heave plate, the bottom pontoons being disposed on the heave plate.
4. The floating wind turbine foundation of claim 3 wherein the heave plate has a cross-section greater than the bottom pontoon.
5. The floating fan foundation of claim 3 wherein a plurality of ribs are connected between the heave plate and the bottom pontoon of the upright pontoon, the plurality of ribs being evenly distributed around the bottom pontoon.
6. A floating wind turbine comprising a wind turbine body and a floating wind turbine foundation according to any one of claims 1 to 7, the wind turbine body being mounted on the tower support.
7. The floating wind turbine of claim 6 wherein the wind turbine body comprises a tower having a bottom end coupled to the tower support, an electromechanical assembly mounted on a top end of the tower, and a blade assembly coupled to the electromechanical assembly.
8. A construction method of a floating fan, based on the floating fan of claim 8, characterized in that the construction method of the floating fan comprises the following steps:
step S10: respectively installing a plurality of bottom buoyancy tanks on a plurality of heave plates, sequentially connecting the bottom buoyancy tanks end to end through the transverse supports, and connecting the bottom buoyancy tanks and the heave plates through rib plates to form the annular body;
step S20: respectively installing a plurality of upper buoyancy tanks on the bottom buoyancy tank of the annular body to form a first half assembly body;
step S30: connecting the tower support to the upper buoyancy tank of the first semi-assembly through the oblique support to form a second semi-assembly;
step S40: mounting the fan body on a tower support forming a second half assembly to form an assembly;
step S50: transporting the assembly to a preset work deployment site;
step S60: anchoring the assembly through an anchor chain to form a floating fan;
step S70: and adjusting the ballast of the floating fan until the floating fan reaches the preset draft.
9. The construction method of a floating type wind turbine according to claim 8, wherein the steps S10 through S30 are performed on a dock.
10. The construction method of a floating wind turbine according to claim 8, wherein the step S40 is performed on a quay near a preset work deployment site.
CN201911113073.0A 2019-11-14 2019-11-14 Floating type fan foundation, fan and construction method thereof Pending CN111021393A (en)

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