Offshore anemometer tower and pedestal thereof
Technical field
The present invention relates to Offshore Wind Power Generation Technology, be specifically related to a kind of offshore anemometer tower and pedestal thereof.
Background technology
Wind energy is a kind of important renewable and clean energy resource, and wind energy has vast potential for future development in Development volue and commercialization are promoted, and utilizes the continuous research and development in various countries of the technical scheme of wind power generation.Compared with land wind field, can reach owing to building wind electricity generating system in open ground the effect that generates electricity preferably, making to build wind power generation plant has at sea become one of main direction of studying of various countries' wind-power electricity generation.
Marine wind electric field has the advantages such as wind energy content is large, development efficiency is high, environment pollution is little, do not occupy cultivated land.China has very long coastline, and coastal waters wind energy resources enriches, and power load center concentrates on the coastal region in east China mostly, and marine wind electric field has vast potential for future development, and Oversea wind power generation is becoming the emphasis of new energy field development.
Through years development, the land wind field of China obtains Devoting Major Efforts To Developing, and offshore wind farm is also in the starting stage.Before building wind power plant at sea, needing the marine site planning to build wind energy turbine set to build offshore anemometer tower, to reach actual measurement wind-resources data and relevant weather data, thus determining whether this marine site is applicable to building marine wind electric field.
Offshore anemometer tower generally includes pedestal (being commonly called as anemometer tower foundation), pylon, working platform and detecting instrument, and base supports is on sea bed, and pylon is fixed on pedestal, and the top of pylon is located at by working platform, and detecting instrument is arranged on working platform; Existing pedestal is generally piling strtucture, namely on sea bed, inserts steel pipe pile, and pedestal is fixed on sea bed by steel pipe pile, after finishing using, then is removed by anemometer tower.But the offshore anemometer tower construction cost of this structure is high, long in time limit, waste is serious.
Summary of the invention
In view of this, in order to overcome offshore anemometer tower construction cost high, waste serious problem, the object of the invention is propose a kind of pedestal for offshore anemometer tower, utilize this pedestal can reduce the construction cost of offshore anemometer tower and cut the waste.In addition, the present invention also proposes a kind of offshore anemometer tower with said base.
To achieve these goals, the pedestal for offshore anemometer tower that the present invention proposes comprises several elemental floating bodies of boring, several elemental floating bodies described are end to end in order, and in horizontal plane, form regular polygon structure, and each described elemental floating body inside comprises at least two separate cavity volumes.
In preferred technical scheme, the quantity of described elemental floating body is four, and described regular polygon structure is square structure, and described elemental floating body inside comprises two separate and cavity volumes that volume is equal.
In preferred technical scheme, centrosymmetric two described cavity volumes are interconnected.
In preferred technical scheme, described elemental floating body is made up of steel pipe, and each described cavity volume is made by two sections of steel pipes parallel in horizontal plane.
The present invention also proposes a kind of offshore anemometer tower, comprise pylon, working platform, detecting instrument and the pedestal described in above-mentioned any one, the bottom of described pylon is fixedly connected with pedestal, and described working platform is fixedly installed on the top of pylon, and described detecting instrument is located on working platform.
In preferred technical scheme, the quantity of described elemental floating body is four, and described regular polygon structure is square structure; Described pedestal also comprises the auxiliary support frame be arranged in described square structure, and described auxiliary support frame is connected with each elemental floating body.
In preferred technical scheme, described auxiliary support frame is included in the first brace summer and the second brace summer arranged in " ten " font in horizontal plane, and described first brace summer is connected with the centre position of elemental floating body with the end of the second brace summer.
In preferred technical scheme, described auxiliary support frame be included in arrange in "×" shape in horizontal plane the first brace summer and the second brace summer, and described first brace summer and the second brace summer are connected two diagonal angles of square structure respectively.
In preferred technical scheme, described auxiliary support frame comprises four the 3rd brace summers, and described four the 3rd brace summers are evenly arranged on four angles of described positive tetragonal structure.
In preferred technical scheme, described pylon is provided with four supporting legs, and described supporting leg is fixed on described pedestal by Connection Block.
In preferred technical scheme, described auxiliary support frame is made up of i iron or spiral steel pipe.
In preferred technical scheme, described auxiliary support frame is trussed construction.
In preferred technical scheme, described pylon is trussed construction.
In preferred technical scheme, described offshore anemometer tower also comprises many wire rope, and the two ends of described wire rope are connected with pylon, pedestal respectively.
In preferred technical scheme, described Connection Block is fixedly installed on described auxiliary support frame or elemental floating body.
The present invention also proposes a kind of offshore anemometer tower, comprise pedestal, pylon, working platform and detecting instrument, the bottom of described pylon is fixed on described pedestal by Connection Block, described working platform is fixedly installed on the top of pylon, described detecting instrument is located on working platform, described pedestal comprises elemental floating body and the auxiliary support frame of boring, four described elemental floating bodies are end to end in order, and in horizontal plane, form square structure, and each described elemental floating body inside comprises two separate cavity volumes; Described auxiliary support frame comprises four the 3rd brace summers be evenly arranged on four angles of described square structure, and described 3rd brace summer is fixed on two adjacent described elemental floating bodies; Described Connection Block is arranged at the centre position of described 3rd brace summer; Described pylon is also connected by the first wire rope with between pedestal, four described first wire rope are evenly arranged around pylon, and the top of described first wire rope is connected to middle part or the top of described pylon, its bottom is connected on the angle of described positive tetragonal structure.
In preferred technical scheme, in described square structure, two on diagonal angle described cavity volumes are communicated with.
In preferred technical scheme, described elemental floating body is made up of steel pipe, and each described cavity volume is made by two sections of parallel steel pipes.
The pedestal that the present invention proposes is provided with several elemental floating bodies, and several elemental floating bodies are end to end in order and in horizontal plane, form regular polygon structure, and each elemental floating body inside is divided into two cavity volumes; Based on the pedestal of this structure, the work progress of offshore anemometer tower is: assembled by offshore anemometer tower on land, then place it in marine, whole offshore anemometer tower is floated on the surface, after being dragged to preposition in the mode of towage, seawater is inputted in the cavity volume of elemental floating body, make it progressively sink, finally make whole offshore anemometer tower be supported on sea bed; After a place completes survey wind task, the seawater in cavity volume is discharged, then the operation of survey wind is carried out in offshore anemometer tower towage to another job site.
By adopting the pedestal of said structure, following benefit can be brought to offshore anemometer tower:
1) alleviate the weight in offshore anemometer tower transportation, and pedestal itself can produce buoyancy, reduce the cost of transportation in towage process;
2) can reuse, cut the waste;
3) be provided with two independently cavity volumes in each elemental floating body, in the work progress of at sea anemometer tower, accurately can control input or the discharge of seawater according to actual conditions, and then reduce risk.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
The structural representation of the pedestal that Fig. 1 provides for first embodiment of the invention;
The structural representation of the pedestal that Fig. 2 provides for second embodiment of the invention;
The structural representation of the pedestal that Fig. 3 provides for third embodiment of the invention;
The structural representation of the pedestal that Fig. 4 provides for fourth embodiment of the invention;
The structural representation of the pedestal that Fig. 5 provides for fifth embodiment of the invention;
Fig. 6 is the structural representation of the elemental floating body that steel pipe is made;
Fig. 7 is A-A schematic cross-section in Fig. 6;
Pedestal shown in Fig. 8 is a kind of modified node method of the 4th embodiment;
Fig. 9 is the Facad structure schematic diagram of the offshore anemometer tower of sixth embodiment of the invention;
Figure 10 is the schematic perspective view of the offshore anemometer tower shown in Fig. 9;
Figure 11 is the schematic perspective view of the offshore anemometer tower of seventh embodiment of the invention;
Figure 12 is the schematic perspective view of the offshore anemometer tower of eighth embodiment of the invention.
Description of reference numerals:
1-elemental floating body, 2-auxiliary support frame, 3-Connection Block, 4-fastening base, 5-pylon
6-working platform, 7-wire rope 11-the first cavity volume 12-the second cavity volume
13-the first steel pipe 14-the second steel pipe 21-the first brace summer 22-the second brace summer
23-the three brace summer
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Usually, seawater anemometer tower comprises pedestal, pylon 5, working platform 6 and detecting instrument, and base supports is on sea bed, and pylon 5 is fixed on pedestal, and the top of pylon 5 is located at by working platform 6, and detecting instrument is arranged on working platform 6.The work progress of towage formula offshore anemometer tower is: assembled by offshore anemometer tower on land, then place it in marine, whole offshore anemometer tower is floated on the surface, after being dragged to preposition in the mode of towage, seawater is inputted in the cavity volume of elemental floating body 1, make it progressively sink, finally make whole offshore anemometer tower be positioned on sea bed.
Fig. 1 is the pedestal for offshore anemometer tower that first embodiment of the invention proposes, it comprises four elemental floating bodies 1, elemental floating body 1 inside is hollow-core construction, four elemental floating body 1 head and the tail connect in order and form square structure, each elemental floating body 1 inside division becomes two cavity volumes, i.e. the first cavity volume 11 and the second cavity volume 12; The auxiliary support frame 2 for support tower 5 is provided with in square structure, auxiliary support frame 2 specifically comprises the first brace summer 21 and the second brace summer 22, first brace summer 21 and the second brace summer 22 in " ten " font arranged crosswise, and then form sphere of movements for the elephants shape structure with four elemental floating bodies 1; The position intersected at the first brace summer 21 and the second brace summer 22 arranges Connection Block 3, and Connection Block 3 is for the pylon 5 of fixing offshore anemometer tower.Auxiliary support frame 2 is provided with pipeline, and pipeline communicates with the first cavity volume 11, second cavity volume 12.
In the present embodiment, the first brace summer 21 and the second brace summer 22 are welded by predetermined form by many i iron, specifically select the i iron of what model and are welded into which type of shape and can determine according to concrete operating mode.In order to strengthen bulk strength and the rigidity of auxiliary support frame 2, be provided with bracing piece between the first brace summer 21 and the second brace summer 22, many bracing pieces are evenly arranged around Connection Block 3.Between adjacent elemental floating body 1 four angles of square structure (i.e. on) be also provided with bracing piece, for strengthening the bonding strength between adjacent elemental floating body 1.
Fig. 2 is a kind of pedestal for offshore anemometer tower that second embodiment of the invention proposes, with the main difference point of the first embodiment be, in this embodiment, the set-up mode of auxiliary support frame 2 is different, in the present embodiment, first brace summer 21 and the second brace summer 22 are arranged in "×" shape, and the first brace summer 21 and the second brace summer 22 are connected two diagonal angles of square structure respectively; In addition, in the present embodiment, the first brace summer 21 adopts steel pipe to make, and the design parameter of steel pipe is determined according to concrete operating mode.
Fig. 3 is a kind of pedestal for offshore anemometer tower that third embodiment of the invention proposes, the main distinction of itself and the first embodiment is the structure of auxiliary support frame 2, in the present embodiment, auxiliary support frame 2 is trussed construction, and namely the first brace summer 21 and the second brace summer 22 all adopt trussed construction; Between the first brace summer 21 and the second brace summer 22, be provided with bracing piece (bracing piece here also adopts trussed construction), many bracing pieces are evenly arranged around Connection Block 3, for strengthening bulk strength and the rigidity of auxiliary support frame 2.Between adjacent elemental floating body 1 i.e. square structure four angles on be also provided with bracing piece, for strengthening the bonding strength between adjacent elemental floating body 1.
Fig. 4 is a kind of pedestal for offshore anemometer tower that fourth embodiment of the invention proposes, the main distinction of itself and the first embodiment is the structure of auxiliary support frame 2, in the present embodiment, auxiliary support frame 2 comprises four the 3rd brace summers 23,3rd brace summer 23 is arranged between adjacent floating body unit 1, and four the 3rd brace summers 23 are evenly across on four angles of square, the centre position of four the 3rd brace summers 23 is respectively arranged with a Connection Block 3, for connecting four supporting legs of pylon 5.
It should be noted that, in above-mentioned four embodiments, the arrangement form of auxiliary support frame 2 and concrete structure can be combined with each other, and such as the first brace summer 21 in the first embodiment and the second brace summer 22 can be arranged by "×" shape.
Fig. 5 is a kind of pedestal for offshore anemometer tower that fifth embodiment of the invention proposes, this pedestal has fully phased out auxiliary support frame 2, and four Connection Blocks 3 for fixed gantry 5 to be set directly on elemental floating body 1 and to be positioned at the centre position on every bar limit of positive tetragonal structure.
In the above-described embodiments, in order to improve safety, centrosymmetric two cavity volumes can be interconnected; Specifically for the pedestal shown in Fig. 1, first cavity volume 11 of left side elemental floating body 1 is connected with the first cavity volume 11 of the right elemental floating body 1, in the process of anemometer tower towage at sea, just in case one of them first cavity volume 11 breaks into water, another first cavity volume 11 also can be intake, the buoyancy that the elemental floating body 1 on final both sides bears is equal, thus ensures pedestal both sides stress equalization, prevents offshore anemometer tower from toppling.
The cavity volume of three or more also can be set in other embodiments on each elemental floating body 1, the control accuracy improving seawater input and discharge, and then promote safety.
In the above-described embodiments, elemental floating body 1 can be made up of single rectangular steel tube, also can be made up of several sections of parallel steel tube; Fig. 6 is the elemental floating body 1, Fig. 7 that four sections of steel pipes are made is this elemental floating body 1A-A place sectional view; During manufacture, the first steel pipe 13 be parallel to each other in horizontal plane and the second steel pipe 14 weld together, the two ends of the first steel pipe 13 and the second steel pipe 14 are sealed, and connected entrance is set between the first steel pipe 13 and the second steel pipe 14, make the first steel pipe 13 inner chamber and the second steel pipe 14 inner space, and then form the first cavity volume 11; First cavity volume 11 is provided with the circulation passage of water and air, facilitates water and air to pass in and out the first cavity volume 11; Adopt and utilize two sections of steel pipes to produce second half of elemental floating body 1 in the same way, namely comprise the part of the second cavity volume, then two parts are welded together.
The pedestal that Fig. 8 makes for adopting the elemental floating body 1 shown in Fig. 6, the auxiliary support frame 2 of this pedestal have employed the form of structure that the 4th embodiment proposes, as shown in Figure 8, and the conveniently setting of wire rope 7, on elemental floating body 1, four angles being positioned at square structure are provided with fastening base 4.
Based on the pedestal shown in Fig. 8, sixth embodiment of the invention proposes a kind of offshore anemometer tower, and Fig. 9 is the front schematic view of this offshore anemometer tower, and Figure 10 is the schematic perspective view of this offshore anemometer tower; This offshore anemometer tower comprises pedestal, pylon 5, working platform 6, many wire rope 7 and detecting instrument, pylon 5 is supported on pedestal, working platform 6 is arranged at the top of pylon 5, detecting instrument is arranged on working platform 6, many wire rope 7 are evenly arranged centered by pylon 5, and the top of wire rope 7 is connected with pylon 5, the top of wire rope 7 is connected with the fastening base 4 on pedestal; Pylon 5 bottom is provided with four supporting legs, and four supporting legs are supported on four the 3rd brace summers 23 respectively, is fixed by Connection Block 3.In the present embodiment, pylon 5 adopts trussed construction, so that weight reduction and reducing costs.
Figure 11 is the offshore anemometer tower that seventh embodiment of the invention proposes, this offshore anemometer tower have employed the pedestal that the first embodiment proposes, and elemental floating body 1 adopts the structure shown in Fig. 6, and four of pylon 5 supporting legs are supported on the first brace summer 21 and the second brace summer 22, and are fixed by Connection Block 3.In the present embodiment, fastening base 4 is also arranged on four angles of square, and the bottom of wire rope 7 is connected with fastening base 4.
Figure 12 is the offshore anemometer tower that eighth embodiment of the invention proposes, this offshore anemometer tower have employed the pedestal that the 5th embodiment proposes, and elemental floating body 1 also adopts the structure shown in Fig. 6, four supporting legs of pylon 5 are directly supported on elemental floating body 1, and are fixed by Connection Block 3.In the present embodiment, fastening base 4 is arranged on the centre position on the every bar limit of square, and the bottom of wire rope 7 is connected by fastening base 4.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.