CN110949632A - Semi-submersible floating type fan foundation, fan and construction method of fan - Google Patents

Semi-submersible floating type fan foundation, fan and construction method of fan Download PDF

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Publication number
CN110949632A
CN110949632A CN201911113785.2A CN201911113785A CN110949632A CN 110949632 A CN110949632 A CN 110949632A CN 201911113785 A CN201911113785 A CN 201911113785A CN 110949632 A CN110949632 A CN 110949632A
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CN
China
Prior art keywords
semi
assembly
submersible floating
fan
wind turbine
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
CN201911113785.2A
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Chinese (zh)
Inventor
陈嘉豪
裴爱国
马兆荣
杨敏冬
任灏
刘东华
元国凯
汤东升
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
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China Energy Construction Group Guangdong Electric Power Design Institute Co Ltd
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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 CN201911113785.2A priority Critical patent/CN110949632A/en
Publication of CN110949632A publication Critical patent/CN110949632A/en
Pending legal-status Critical Current

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Classifications

    • 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 
    • B63B21/00Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/50Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B39/00Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/50Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
    • B63B2021/505Methods for installation or mooring of floating offshore platforms on site
    • 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 semi-submersible floating type fan foundation, a fan and a construction method, wherein the semi-submersible floating type fan foundation comprises the following components: a bottom buoyancy tank; the central upright post is arranged on the center of the bottom buoyancy tank; the plurality of inclined upright columns are arranged on the bottom buoyancy tank and are uniformly distributed by taking the central upright column as the center; the inclined upright posts are inclined outwards relative to the central upright post, and a transverse support is connected between each inclined upright post and the central upright post; the heave plate is arranged on the bottom of the bottom buoyancy tank; and a plurality of groups of anchor chains which are respectively connected with the top ends of the inclined upright posts. The inclined upright post of the semi-submersible floating fan foundation inclines outwards relative to the central upright post, so that the increase of the vertical hydrodynamic force restoring moment of the semi-submersible floating fan foundation and the improvement of the transverse inclination stability of the semi-submersible floating fan foundation are facilitated; the anchor chain is connected with the top end of the inclined upright post, so that the length of the suspended section of the anchor chain and the length of the force arm of the restoring moment of the anchor chain are increased, and the constraint effect of the anchor chain on the semi-submersible floating type fan foundation is effectively improved.

Description

Semi-submersible floating type fan foundation, fan and construction method of fan
Technical Field
The invention relates to the technical field of wind power generation, in particular to a semi-submersible 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, since the use of fixed offshore wind turbines is limited to sea areas with water depth of 50m due to technical and economic problems, the semi-submersible 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.
However, in most of the current floating fan designs, the stability and the economy of the floating body are difficult to obtain better balance, the suspended length of an anchor chain in a shallow sea area is insufficient, the adaptability to different water depth changes is poor, the problems of complex manufacture, prominent structural fatigue damage and the like are caused by too many small rods.
Disclosure of Invention
Therefore, it is necessary to provide a semi-submersible floating type wind turbine foundation, a wind turbine and a construction method for solving the problems of the conventional technology.
A semi-submersible floating wind turbine foundation comprising:
a bottom buoyancy tank;
the central upright post is arranged on the center of the bottom buoyancy tank;
the plurality of inclined upright columns are arranged on the bottom buoyancy tank and are uniformly distributed by taking the central upright column as the center; the inclined upright posts are inclined outwards relative to the central upright post, and a transverse support is connected between each inclined upright post and the central upright post;
the heave plate is arranged on the bottom of the bottom buoyancy tank; and
and the plurality of groups of anchor chains are respectively connected with the top ends of the inclined upright columns.
The inclined upright post of the semi-submersible floating fan foundation inclines outwards relative to the central upright post, so that the increase of the vertical hydrodynamic force restoring moment of the semi-submersible floating fan foundation and the improvement of the transverse inclination stability of the semi-submersible floating fan foundation are facilitated; the anchor chain is connected with the top end of the inclined upright column, so that the length of a suspended section of the anchor chain and the length of a force arm of a restoring moment of the anchor chain are increased, the constraint effect of the anchor chain on the semi-submerged floating type floating fan foundation is effectively improved, and the applicability of the anchor chain in a shallow sea area is enhanced; the heaving plate increases the damping of the vertical motion of the semi-submersible floating fan foundation and can also optimize the yawing motion performance of the semi-submersible floating fan foundation. From this, the structural style of the floating type fan foundation of semi-submerged type is simple, does not have too much little component, and the structure atress is reasonable with the transmission, is favorable to improving the fatigue resistance ability of the floating type fan foundation of semi-submerged type, has fine economic nature and expansibility.
In one embodiment, the swing device further comprises a balancing weight which is connected below the heave plate.
In one embodiment, the number of the inclined upright columns is three, the bottom buoyancy tank is of a Y-shaped structure, and the inclined upright columns are respectively arranged at the ends of the bottom buoyancy tank.
In one embodiment, the bottom buoyancy tank comprises three sub buoyancy tanks, one ends of the three sub buoyancy tanks are connected to form a central point, and the three sub buoyancy tanks are distributed at equal angles; the bottom ends of the inclined upright columns are respectively connected with one ends, far away from the central point, of the sub-buoyancy tanks, and the bottom end of the central upright column is connected with the central point.
In one embodiment, the sub-buoyancy tank is a hollow structure, and a plurality of first bulkheads are arranged inside the sub-buoyancy tank and divide the inner space of the sub-buoyancy tank into a plurality of first cabins.
A semi-submersible floating type fan comprises a fan body and the semi-submersible floating type fan foundation, wherein the fan body is installed on a central upright post.
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 top end of the central upright post, 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 semi-submersible floating fan is based on the semi-submersible floating fan and comprises the following steps:
arranging the bottom buoyancy tank on the heave plate to form a first half assembly;
mounting the central upright post and the plurality of inclined upright posts on a bottom buoyancy tank of the first semi-assembly to form a second semi-assembly;
connecting the central upright post and each inclined upright post of the second semi-assembly body through the transverse supporting piece respectively to form a third semi-assembly body;
transporting the third semi-assembly to a nearby dock of a pre-set deployment sea area;
installing the blower body on the central upright post of the third semi-assembly to form an assembly,
transporting the assembly to a preset deployment sea area;
connecting the assembly and the seabed by adopting a plurality of groups of pre-adjusted anchor chains to form a semi-submersible floating fan;
and adjusting the ballast of the semi-submersible floating fan until the semi-submersible floating fan reaches the preset draft.
In one embodiment, in the step of transporting the third half-assembly to the nearby wharf of the preset deployment sea area, the third half-assembly is wet towed to the nearby wharf of the preset deployment sea area by using a towing vessel.
In one embodiment, in the step of transporting the assembly to the preset deployment sea area, the assembly is wet towed to the preset deployment sea area using a tow vessel.
Drawings
Fig. 1 is a schematic structural view of a semi-submersible floating wind turbine according to a first embodiment of the present invention;
FIG. 2 is a schematic structural view of a semi-submersible floating wind turbine foundation of the semi-submersible floating wind turbine of FIG. 1;
FIG. 3 is a schematic structural view of a semi-submersible floating wind turbine according to a second embodiment of the present invention;
fig. 4 to 10 are flow charts of a construction method of the semi-submersible floating fan according to the present invention.
The meaning of the reference symbols in the drawings is:
the semi-submersible floating type wind turbine comprises a semi-submersible floating type wind turbine foundation 100, a bottom buoyancy tank 10, a sub buoyancy tank 11, a central upright post 20, a first column body 21, a second column body 22, an inclined upright post 30, a cable guide piece 31, a transverse support piece 40, a heave plate 50, a flat plate 51, an arc-shaped part 52, an anchor chain 60, a balancing weight 70, a connecting chain 80, a wind turbine body 200, a tower drum 210, an electromechanical component 220, a blade component 230, a hub 240, a blade 250, a first semi-assembly 300, a second semi-assembly 400, a third semi-assembly 500, a fourth semi-assembly 600, an assembly 700 and a semi-submersible floating type wind turbine 800.
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 semi-submersible floating wind turbine according to a first embodiment of the present invention includes a semi-submersible floating wind turbine foundation 100 and a wind turbine body 200 installed on the semi-submersible floating wind turbine foundation 100. The semi-submersible floating type wind turbine foundation 100 includes a bottom buoyancy tank 10, a center pillar 20, a plurality of inclined pillars 30, a heave plate 50, and a plurality of sets of anchor chains 60. A center pillar 20 is provided on the center of the bottom buoyancy tank 10, and the blower body 200 is installed on the center pillar 20. A plurality of inclined upright posts 30 are arranged on the bottom buoyancy tank 10 and are uniformly distributed by taking the central upright post 20 as the center; the angled uprights 30 are angled outwardly relative to the central upright 20 and a transverse support 40 is connected between each angled upright 30 and the central upright 20. The heave plate 50 is disposed on the bottom of the bottom pontoons 10, i.e., the bottom pontoons 10 are disposed on the upper surface of the heave plate 50. The plurality of groups of anchor chains 60 are respectively connected to the top ends of the plurality of inclined upright posts 30, and the anchor chains 60 are used for connecting the seabed, so that the semi-submersible floating type fan can move and be constrained in space to a certain extent.
In the semi-submersible floating fan, the inclined upright column 30 of the semi-submersible floating fan foundation 100 is inclined outwards relative to the central upright column 20, so that the increase of the vertical hydrodynamic force restoring moment of the semi-submersible floating fan foundation 100 is facilitated, and the transverse inclination stability of the semi-submersible floating fan foundation 100 is improved; the anchor chain 60 is connected with the top end of the inclined upright post 30, so that the length of the suspended section of the anchor chain 60 and the length of the restoring moment arm of force of the anchor chain 60 are increased, the constraint effect of the anchor chain 60 on the semi-submersible floating type fan foundation 100 is effectively improved, and the applicability of the anchor chain in a shallow sea area is enhanced; heave plate 50 may be used to provide buoyancy, may also increase damping of vertical motion, and may also optimize the yaw motion performance of semi-submersible floating wind turbine foundation 100. From this, semi-submerged type floats formula fan foundation 100's structural style is simple, does not have too much little component, and the structure atress is reasonable with the transmission, is favorable to improving semi-submerged type and floats formula fan foundation 100's fatigue resistance ability, has fine economic nature and expansibility.
The bottom buoyancy tank 10 may be made of steel material or prestressed reinforced concrete. The structural form of the bottom buoyancy tank 10 can be various, and the bottom buoyancy tank can be arranged according to the number of the inclined upright columns 30; specifically, in the present embodiment, the number of the inclined columns 30 is three, the bottom buoyancy tank 10 is in a Y shape, and the inclined columns 30 are respectively disposed on the ends of the bottom buoyancy tank 10. Specifically, the bottom buoyancy tank 10 includes three sub-buoyancy tanks 11, one ends of the three sub-buoyancy tanks 11 are connected to form a central point, and the three sub-buoyancy tanks 11 are distributed at equal angles. Further, the three sub-buoyancy tanks 11 are distributed at 120 °, that is, the angle between two adjacent sub-buoyancy tanks 11 is 120 °. The bottom of oblique stand 30 is connected with the one end that the central point was kept away from to sub-flotation tank 11 respectively to three oblique stand 30 encircles central stand 20 equidistance interval and arranges and enclose into a regular triangle, and the central point is regular triangle's central point and puts, and central stand 20's bottom is connected with the central point, from this, makes the whole of semi-submerged type floating fan basis be the set of trigonum, effectively improves the holistic stability of structure.
Further, sub-buoyancy tank 11 is hollow structure, and sub-buoyancy tank 11 is inside to be provided with a plurality of first bulkheads, and a plurality of first bulkheads separate into a plurality of first cabins with sub-buoyancy tank 11's inner space, and the ballast in the first cabin is liquid, like water, and the ballast in first cabin is adjustable to can be according to different operating condition, can adjust the ballast in first cabin and reach predetermined draft with semi-submerged type floating fan. Further, be provided with first horizontal strengthening rib and first vertical strengthening rib on every first bulkhead, first horizontal strengthening rib and first vertical strengthening rib are favorable to strengthening the intensity of sub-flotation tank 11.
The center pillar 20 may be made of steel or prestressed reinforced concrete material. The shape of the central pillar 20 can be various forms, for example, the central pillar 20 can be a cylinder, a rectangular body, a triangular prism, or other special-shaped body. Specifically, in the present embodiment, the central upright column 20 includes a first column 21 disposed on the bottom buoyancy tank 10 and a second column 22 disposed on the first column 21; the cross section of first cylinder 21 diminishes towards second cylinder 22 direction from end flotation tank 10 gradually, is favorable to improving the stability of center pillar 20, is favorable to improving center pillar 20's load promptly, is favorable to improving the homogeneity that the load on the first cylinder 21 transmitted to end flotation tank 10 simultaneously, prevents effectively that the atress of end flotation tank 10 from concentrating. Further, the first cylinder 21 is a circular truncated cone, and the second cylinder 22 is a cylinder.
The oblique cylinder 30 may be made of steel material or prestressed reinforced concrete. The shape of the oblique post 30 can be various forms, for example, the oblique post 30 can be a cylinder, a rectangle, a triangle or other special-shaped body. Specifically, in the present embodiment, the inclined upright 30 is a cylinder, an angle formed between one side of the inclined upright 30 facing the central upright 20 and the bottom buoyancy tank 10 is an obtuse angle, and an angle formed between one side of the inclined upright 30 facing away from the central upright 20 and the bottom buoyancy tank 10 is an acute angle. In the present embodiment, an angle formed between the side of the inclined upright 30 facing the center upright 20 and the bottom pontoon 10 is 120 °, and an angle formed between the side of the inclined upright 30 facing away from the center upright 20 and the bottom pontoon 10 is 60 °.
In some embodiments, the inclined upright 30 is a hollow structure, a plurality of second bulkheads are arranged inside the inclined upright 30, the second bulkheads divide the internal space of the inclined upright 30 into a plurality of second cabins, the ballast of the second cabin at the bottom of the inclined upright 30 is fixed, and the ballast of the second cabin at the bottom of the inclined upright 30 can be concrete, ore or sand; the ballast of the second compartments in the middle and top levels of the inclined pillars 30 can be adjusted, and the ballast of the second compartments in the middle and top levels of the inclined pillars 30 is liquid, such as water. Further, a second horizontal reinforcing rib and a second vertical reinforcing rib are arranged on each second bulkhead, and the second horizontal reinforcing ribs and the second vertical reinforcing ribs are favorable for enhancing the strength of the inclined upright post 30.
In some embodiments, the lateral support 40 is a cylinder or a cuboid.
The shape of the heave plate 50 is matched with that of the bottom buoyancy tank 10, and the area of the heave plate 50 is larger than that of the bottom buoyancy tank 10, so that the damping of vertical motion is further increased. Specifically, in the present embodiment, the heave plate 50 is also Y-shaped, and the side of the heave plate 50 extends out of the bottom buoyancy tank 10. Specifically, hang down and swing board 50 includes three dull and stereotyped 51, the coincidence of three dull and stereotyped 51's one end, and three dull and stereotyped 51's one end links to each other, and the one end that three dull and stereotyped 51 links to each other corresponds the setting with the central point, and three sub-flotation tank 11 sets up respectively on three dull and stereotyped 51, and the sub-flotation tank 11 of extending in dull and stereotyped 51's both sides, and the one end that the central point was kept away from to dull and stereotyped 51 is arc portion 52, and the week side of arc portion 52 extends the tip that the. In this embodiment, the heave plate 50 is integrally formed with the bottom buoyancy tank 10, and has good stability.
In the present embodiment, since the number of the inclined columns 30 is three, the number of the anchor chains 60 is also three; since the three sub-pontoons 11 are distributed at 120 °, the three sets of anchor chains 60 are also distributed at 120 °. The number of anchor chains per group of anchor chains 60 may be set according to the specific working conditions, typically the number of anchor chains per group of anchor chains 60 is 1-3. Depending on the specific depth of water, chain 60 may be gravity catenary or tension or hybrid. When the semi-submersible floating type fan foundation works in a shallow water area below 100m, a suspended type balancing weight can be arranged in the middle of the anchor chain 60 to increase the vertical restoring rigidity of the anchor chain 60.
In some embodiments, the top end of the inclined upright 30 is provided with a cable guide 31, the cable guide 31 is provided with a cable guide hole, one end of the anchor chain 60 is connected with the cable guide hole on the cable guide 31, and the other end of the anchor chain 60 is connected with the seabed.
The wind turbine body 200 comprises a tower 210, an electromechanical assembly 220 and a blade assembly 230, wherein the bottom end of the tower 210 is connected with the top end of the central upright post 20; further, the bottom end of tower 210 is fixedly connected to the top end of center column 20 via a flange. An electromechanical assembly 220 is mounted on the top end of the center column 20, the electromechanical assembly 220 being rotatable about the center axis of the 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 inclined columns 30 are provided with ladder stands and anti-collision members on the outer circumference, so that the operation and maintenance ship can park and the operation and maintenance personnel can land. Corridor passageways are provided in the transverse supports 40 and boarding personnel can climb up the top ends of the oblique uprights 30 through the ladder of the oblique uprights 30 and enter the tower 210 through the corridor passageways in the transverse supports 40.
Referring to fig. 3 (the bottom of fig. 3 is not shown, and the wired section is not shown), a semi-submersible floating wind turbine according to a second embodiment of the present invention includes a semi-submersible floating wind turbine base 100 and a wind turbine body 200 installed on the semi-submersible floating wind turbine base 100. The semi-submersible floating type wind turbine foundation 100 includes a bottom buoyancy tank 10, a center pillar 20, a plurality of inclined pillars 30, a heave plate 50, and a plurality of sets of anchor chains 60. A center pillar 20 is provided on the center of the bottom buoyancy tank 10, and the blower body 200 is installed on the center pillar 20. A plurality of inclined upright posts 30 are arranged on the bottom buoyancy tank 10 and are uniformly distributed by taking the central upright post 20 as the center; the angled uprights 30 are angled outwardly relative to the central upright 20 and a transverse support 40 is connected between each angled upright 30 and the central upright 20. The heave plate 50 is disposed on the bottom of the bottom pontoons 10, i.e., the bottom pontoons 10 are disposed on the upper surface of the heave plate 50. The plurality of anchor chains 60 are respectively connected to the top ends of the plurality of inclined vertical posts 30. The difference of this embodiment with first embodiment lies in, semi-submerged type floats formula fan basis still includes balancing weight 70, and balancing weight 70 is connected in the below of swaing board 50, through being equipped with balancing weight 70, can effectively reduce semi-submerged type and float the focus of formula fan to improve semi-submerged type and float the stability of formula fan, make this semi-submerged type float formula fan can work in the deep water district more than 100 m. It can be understood that when the semi-submersible floating wind turbine foundation works in a deep water area of more than 100m, the overall weight can be increased by providing the counter weight 70 to lower the center of gravity of the semi-submersible floating wind turbine. When the semi-submersible floating type fan foundation works in a shallow water area below 100m, the balancing weight 70 is not required to be equipped, and the ballast of the first cabin of the sub-buoyancy tank 11 and the ballast of the second cabins at the middle layer and the top layer of the inclined upright column 30 can be adjusted, so that the semi-submersible floating type fan can reach the preset draft.
The structure of balancing weight 70 can be circular block, triangle piece and square piece etc. is provided with the ballast tank in the balancing weight 70, and the ballast in the ballast tank can be fixed ballast, also can be adjustable ballast, designs according to the demand. A connecting chain 80 is connected between the weight 70 and the heave plate 50, that is, the weight 70 is suspended below the heave plate 50 through the connecting chain 80. The quantity of connecting chain 80 is many to increase the balancing weight 70 and hang down the stability that the board 50 is connected, the avris of the one end of connecting chain 80 and balancing weight 70 can be dismantled and be connected, the other end of connecting chain 80 and the avris of hanging down and swing board 50 can be dismantled and be connected. Specifically to in this embodiment, the quantity of connecting chain 80 is six, and the avris of balancing weight 70 evenly is equipped with three connecting hole, and the one end that the central point was kept away from to dull and stereotyped 51 is equipped with the mounting hole, and every connecting hole can be connected with the one end of two connecting chains 80, and the mounting hole on two adjacent dull and stereotyped 51 is connected respectively to the other end of two connecting chains 80, and every mounting hole is connected with two connecting chains promptly. Furthermore, hooks are arranged at two ends of the connecting chain 80, and two ends of the connecting chain 80 are respectively connected with the connecting hole and the mounting hole through the hooks, so that the connecting chain 80 is detachably connected with the balancing weight 70 and the heave plate 50. In this embodiment, the connecting chain 80 is a steel chain material.
Referring to fig. 4 to 10, the present invention provides a construction method of a semi-submersible floating wind turbine, which includes the following steps:
step S10: as shown in fig. 4, the first half assembly 300 is formed by disposing the bottom pontoon 10 on the heave plate 50;
step S20: as shown in fig. 5, the second half assembly 400 is formed by mounting the center pillar 20 and the plurality of slant pillars 30 on the bottom pontoon 10 of the first half assembly 300;
step S30: as shown in fig. 6, the central upright post 20 of the second half assembly 400 is connected with each inclined upright post 30 through a transverse support 40 to form a third half assembly 500;
step S40: as shown in fig. 8, the third half assembly 500 is transported to a nearby dock of the pre-deployment sea area;
step S50: mounting the blower body 200 on the central upright post 20 of the third half-assembly 500 to form an assembly 700;
step S60: transporting the assembly 700 to a preset deployment sea area;
step S70: as shown in fig. 9, a plurality of sets of pre-adjusted anchor chains 60 are used to connect the assembly 700 to the seabed to form a semi-submersible floating wind turbine 800.
Step S80: and adjusting the ballast of the semi-submersible floating fan until the semi-submersible floating fan reaches the preset draft.
It should be noted that steps S10 to S30 are all performed on the dock. In step S40, the third half-assembly 500 is wet towed to a dock near the predetermined deployment sea area by using a tow boat, thereby effectively reducing the transportation difficulty. Similarly, in step S60, the assembly 700 is wet towed to the predetermined deployment sea area by using a tow boat, so that the transportation is convenient.
Referring to fig. 7 and 8, the specific steps of step S50 are:
step S51: the bottom end of tower 210 is coupled to the top end of center column 20 of third half assembly 500 to form fourth half assembly 600. Specifically, the bottom end of tower 210 is fixedly connected to the top end of center column 20 via a flange.
Step S52: electromechanical assembly 220 is mounted on the top end of tower 210 of fourth subassembly half 600, and blade assembly 230 is coupled to electromechanical assembly 220 to form assembly 700.
Before step S51, the method further includes transporting tower 210, electromechanical assembly 220, and blade assembly 230 to a dock near a predetermined deployment sea area, and effectively reducing the occupied area by transporting wind turbine body 200 in three parts.
Referring to fig. 10, in some embodiments, if the deployment sea area is a deep water area of 100m or more, a step of suspending the weight block 70 below the heave plate 50 is further included between the steps S70 and S80. Specifically, a plurality of connecting chains 80 are connected between the counterweight block 70 and the heave plate 50, one end of each connecting chain 80 is detachably connected with the edge side of the counterweight block 70, and the other end of each connecting chain 80 is detachably connected with the edge side of the heave plate 50, so that the semi-submersible floating fan can be switched between a deep water area of more than 100m and a shallow water area of less than 100m, namely, when the semi-submersible floating fan is transferred from the deep water area of more than 100m to the shallow water area of less than 100m, the counterweight block 70 can be detached; when the semi-submersible floating type fan is transferred to a deep water area of more than 100m from a shallow water area of less than 100m, the balancing weight 70 can be installed, and the operation is convenient.
According to the construction method of the semi-submersible floating fan, the third semi-assembly 500 is assembled on a dock, then the third semi-assembly 500, the tower drum 210, the electromechanical assembly 220 and the blade assembly 230 are transported to a wharf close to a preset deployment sea area, and the third semi-assembly 500, the tower drum 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 third half assembly 500, the tower drum 210, the electromechanical assembly 220 and the blade assembly 230 are assembled on the wharf close to the preset deployment sea area to form the assembly 700, and then the assembly 700 is transported to the preset deployment sea area and assembled on the preset deployment sea area, so that the working strength and the construction time are effectively reduced, and the construction cost is reduced.
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. The utility model provides a semi-submerged type floats formula fan basis which characterized in that includes:
a bottom buoyancy tank;
the central upright post is arranged on the center of the bottom buoyancy tank;
the plurality of inclined upright columns are arranged on the bottom buoyancy tank and are uniformly distributed by taking the central upright column as the center; the inclined upright posts are inclined outwards relative to the central upright post, and a transverse support is connected between each inclined upright post and the central upright post;
the heave plate is arranged on the bottom of the bottom buoyancy tank; and
and the plurality of groups of anchor chains are respectively connected with the top ends of the inclined upright columns.
2. The semi-submersible floating fan foundation of claim 1 further comprising a counterweight connected below the heave plate.
3. The semi-submersible floating wind turbine foundation of claim 1, wherein the number of the inclined vertical columns is three, the bottom buoyancy tank is of a Y-shaped structure, and the inclined vertical columns are respectively arranged at the ends of the bottom buoyancy tank.
4. The semi-submersible floating wind turbine foundation of claim 3, wherein the bottom buoyancy tank comprises three sub-buoyancy tanks, one ends of the three sub-buoyancy tanks are connected to form a central point, and the three sub-buoyancy tanks are distributed at equal angles; the bottom ends of the inclined upright columns are respectively connected with one ends, far away from the central point, of the sub-buoyancy tanks, and the bottom end of the central upright column is connected with the central point.
5. The semi-submersible floating wind turbine foundation of claim 4 wherein the sub-pontoons are hollow and have a plurality of first bulkheads disposed therein that divide the interior space of the sub-pontoons into a plurality of first compartments.
6. A semi-submersible floating wind turbine comprising a wind turbine body and the semi-submersible floating wind turbine foundation of any one of claims 1 to 5, the wind turbine body being mounted on the central column.
7. The semi-submersible floating wind turbine of claim 6 wherein the wind turbine body includes a tower, an electromechanical assembly mounted on a top end of the tower, and a blade assembly connected to the electromechanical assembly.
8. A construction method of a semi-submersible floating fan, which is based on the semi-submersible floating fan in claim 6, is characterized by comprising the following steps:
arranging the bottom buoyancy tank on the heave plate to form a first half assembly;
mounting the central upright post and the plurality of inclined upright posts on a bottom buoyancy tank of the first semi-assembly to form a second semi-assembly;
connecting the central upright post and each inclined upright post of the second semi-assembly body through the transverse supporting piece respectively to form a third semi-assembly body;
transporting the third semi-assembly to a nearby dock of a pre-set deployment sea area;
installing the blower body on the central upright post of the third semi-assembly to form an assembly,
transporting the assembly to a preset deployment sea area;
connecting the assembly and the seabed by adopting a plurality of groups of pre-adjusted anchor chains to form a semi-submersible floating fan;
and adjusting the ballast of the semi-submersible floating fan until the semi-submersible floating fan reaches the preset draft.
9. The method of constructing a semi-submersible floating wind turbine according to claim 8, wherein in the step of transporting the third semi-assembly to the nearby quay of the preset deployment sea area, the third semi-assembly is wet towed to the nearby quay of the preset deployment sea area using a tug boat.
10. The method of constructing a semi-submersible floating wind turbine according to claim 8, wherein the step of transporting the assembly to a predetermined deployment sea area comprises wet towing the assembly to the predetermined deployment sea area using a tow vessel.
CN201911113785.2A 2019-11-14 2019-11-14 Semi-submersible floating type fan foundation, fan and construction method of fan Pending CN110949632A (en)

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