CN212318210U - Large tidal current energy power generation device and assembly platform thereof - Google Patents

Abstract

The utility model provides a large-scale trend can power generation facility and assembly platform thereof installs at least one horizontal axis hydraulic generator in it, and the assembly platform includes support, four piece at least spud piles, two at least nestings and two at least atress support piece. The spud pile links into an integrated entity and around forming installation space through the support, and the generator is installed in installation space, and the one end pile of every spud pile is fixed in the seabed, and the other end extends to more than the surface of water, and four piece at least spud piles divide left and right two to be arranged along the rivers direction, and wherein at least two spud piles of every are arranged in proper order and with one of them at least spud pile as main year stake along the rivers direction. At least two nested pieces are respectively and separably sleeved on the main load piles at the left side and the right side of the generator. One ends of the at least two stress supporting pieces are respectively arranged at the left side and the right side of the horizontal shaft water turbine along the water flow direction, and the other ends of the at least two stress supporting pieces are respectively correspondingly provided with the nested pieces so as to resist the impact force of the water flow on the horizontal shaft water turbine generator.

Description

Large tidal current energy power generation device and assembly platform thereof

Technical Field

The utility model belongs to trend can the electricity generation field, especially relate to a large-scale trend can power generation facility and assembly platform thereof.

Background

Ocean energy (including tidal current energy, wave energy, temperature difference energy, salt difference energy, ocean current energy and the like) is clean and pollution-free renewable energy, is rich in reserves and wide in distribution, and has excellent development prospect and value. Nowadays, the shortage of energy sources is increasing, the greenhouse effect is increasing, and the energy sources need low carbonization, so clean energy sources such as wind energy, ocean energy and the like are the development directions of future energy sources. However, in addition to the mature wind energy, the ocean energy is still used in the starting stage, and no universal and mature equipment is provided, so that the generated power is lower than that of other energy sources. Most importantly, the cost of the existing ocean power generation device, whether the manufacturing cost, the installation cost or the maintenance cost, is far higher than the cost of power generation by other energy sources, which becomes the biggest obstacle for restricting the commercial application and the popularization of the ocean power generation device.

At present, the power of a single machine can be maximally 5MW by using offshore wind power to generate a wind power generation device. A tower is fixed on the sea bottom, then a wind driven generator is fixed at the top end of the tower and is positioned above the sea surface, and wind energy is collected to generate electricity. The diameter of the lowest end of the tower is 6.242m, the diameter of the uppermost end is 4.170m, the average diameter of the tower is 5.206m, and the height of the whole tower is 96 m. In other words, to achieve a single installed power of up to 5MW, it is necessary to provide towers that are nearly 100m high and have a maximum diameter of more than 6m to be able to carry the power. Such a tower weighs 439 tons and is expensive to manufacture and install. Because of the high cost, it cannot be converted into a real economic value. Even if large-scale application is desired, it is prohibitive due to high cost.

By adopting wind power generation, the diameter of the whole impeller is 230m and is not enough for generating 12MW, but the corresponding tower height needs to be 195m (the lowest end of the blade needs to be 30m away from the ground, and the radius of the impeller is 165 m). However, when tidal current energy is used for generating electricity, the diameter of each blade only needs to be 70m, theoretically 30MW of electricity generation can be achieved, and the height of each pile only needs to be 40m (the distance between each blade and the ground is 5m, and the radius of each impeller is 35 m). Therefore, compared with offshore wind power generation, tidal current energy power generation greatly reduces the height of the tower barrel, reduces cost, and has much higher power generation efficiency than that of offshore wind power generation.

The conventional tidal current energy power generation device usually adopts two fixing modes, one mode is floating type fixing, namely floating in the sea through a floating bed and fixing on the sea bed or both banks through steel cables, and the other mode is seabed fixing type fixing, namely directly fixing on the sea bed through a fixing pile. The floating type fixing device mainly utilizes wave energy to generate electricity, the generating capacity is not high compared with deep tidal current energy, and the size of a generator capable of being suspended is small, so that the economic value is small, and the floating type fixing device is gradually abandoned in practical application. The second type of seabed fixed type is a fixed mode which is really applied to practical application of the existing tidal current energy power generation device.

At present, the maximum single installed power of a power generation module which is really put into use by the existing tidal current energy power generation device is 2 MW. The single installed power exceeds 2MW, and the situation of successful implementation is not realized all over the world. Due to the limitation of the scale of a single generator set, most tidal current energy power generation devices have extremely high cost and cannot be really put into commercial application, so that the commercial value cannot be generated. Specifically, the conventional tidal current energy power generation device is directly fixed to the sea floor by a fixing pile, similar to the offshore wind power generation device. Because of the large seawater impact force, the spud must have a large enough diameter to resist bending moments, with the larger diameter spud being more costly to pile. The bearing capacity of the fixed pile with a specific diameter has an upper limit value, so that the fixed pile can correspondingly bear only a horizontal shaft hydraulic generator within a certain scale. The fixed piles cannot be made large without limit from the aspects of cost and technology, so that the installed power of a single horizontal shaft hydraulic generator cannot be broken through.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome at least one among the prior art not enough, provide a large-scale trend can power generation facility and assembly platform thereof.

In a first aspect, the utility model provides a large-scale trend can power generation facility's assembly platform installs at least one horizontal axis hydraulic generator in it, and large-scale trend can power generation facility's assembly platform includes support, four at least spud piles, two at least nestings and two at least atress support piece. At least four spud piles pass through the support and connect into an organic whole and around forming an installation space, and at least one horizontal axis hydraulic generator installs in the installation space, and the one end pile of every spud pile is fixed in the seabed, and the other end extends to above the surface of water, and four at least spud piles divide left and right two to be arranged along the water flow direction, and wherein at least two spud piles of every row are arranged along the water flow direction in proper order, and with at least one spud pile in two at least spud piles of every row as main year stake. At least two nested pieces are respectively and separably sleeved on the main load piles at the left side and the right side of the horizontal shaft hydraulic generator and are positioned below the water surface. One ends of the at least two stress supporting pieces are respectively arranged at the left side and the right side of the horizontal shaft water turbine along the water flow direction, and the other ends of the at least two stress supporting pieces are respectively correspondingly provided with the nested pieces so as to resist the impact force of the water flow on the horizontal shaft water turbine generator.

In an embodiment of the first aspect of the present invention, the assembly platform further includes at least two sets of fence guide slots for installing or fixing the fence, which are respectively disposed on both sides of the horizontal axis hydraulic generator in the upstream and downstream direction, and each set of fence guide slot is communicated from above the water surface to below the water surface.

In an embodiment of the first aspect of the present invention, the assembly platform further includes at least one through-person pipeline, one end of the through-person pipeline is connected to the water surface, and the other end of the through-person pipeline is connected to the water surface, so that the person can reach the position below the water surface to install and fix the main pile and the embedded member.

In an embodiment of the first aspect of the present invention, the assembly platform further includes at least one blower and a ventilation pipe, the ventilation pipe can be fixed or detachably arranged along the inside of the ventilation pipe or along the outside of the ventilation pipe, and the ventilation pipe leads to the below-water surface from above the water surface so as to enable the below-water-surface working area to exchange air.

In an embodiment of the first aspect of the present invention, the assembly platform further includes at least one water pump and at least one water drainage pipe, the water drainage pipe can be fixed or detachably arranged along the inside of the communication pipe or along the outside of the communication pipe, the water drainage pipe is communicated below the water surface from above the water surface, and the water pump extracts the accumulated water in the working area below the water surface and discharges the accumulated water above the water surface through the water drainage pipe.

In an embodiment of the first aspect of the present invention, the main lower portion of the pile is filled with concrete, and the upper portion is hollow, so that the person can install and fix the main pile and the nest through the main pile below the water surface.

In an embodiment of the first aspect of the present invention, the assembly platform further includes at least one suspension support column, and for the airtight hollow structure, one end of the suspension support column communicates with the horizontal shaft hydraulic generator, so that the personnel can enter the horizontal shaft hydraulic generator through the suspension support column, and the other end of the suspension support column is opened above the water surface.

In an embodiment of the first aspect of the present invention, the assembly platform further includes a sealing device and a fixing component, the fixing component fixes the main loading pile and the nesting component, and the sealing device is correspondingly disposed at the fixing component.

In an embodiment of the first aspect of the present invention, the assembly platform further includes at least two shock absorbing devices, and each shock absorbing device is disposed between the nest and the main pile.

In an embodiment of the first aspect of the present invention, each row of the fixing piles is provided with a side plate toward one side of the horizontal shaft hydraulic generator.

In a second aspect, the present invention further provides a large tidal current energy power generation device, comprising the assembly platform, at least one horizontal axis hydraulic generator and at least one suspension support column according to any one of the embodiments of the first aspect. At least one horizontal axis hydro-generator is detachably mounted in the assembly platform. At least one suspension support column is of a closed hollow structure, one end of each suspension support column is communicated with the horizontal shaft hydraulic generator, so that personnel can enter the horizontal shaft hydraulic generator through the suspension support columns, and the other end of each suspension support column is communicated with the water surface.

In the third aspect, the utility model provides a trend can power generation facility, including two at least fences, set up respectively in horizontal axis hydraulic generator's upper and lower trip both sides, every fence is greater than or equal to 8 centimetres along the width of rivers direction.

In an embodiment of the third aspect of the present invention, the tidal current energy generating apparatus includes an assembly platform according to any embodiment of the first aspect of the present invention.

In an embodiment of the third aspect of the present invention, the tidal current energy generating apparatus is the tidal current energy generating apparatus according to any embodiment of the second aspect of the present invention.

To sum up, the utility model discloses a link together four spuds and support and form installation space, then in horizontal axis hydraulic generator was fixed in installation space, rather than installing horizontal axis hydraulic generator in the frame like prior art, reduced steel's use by a wide margin, reduced manufacturing and installation cost. And, the utility model discloses a set up atress support piece and the nested piece that is located horizontal axis hydraulic generator both sides, can transmit both sides with the thrust of the rivers that horizontal axis hydraulic generator received balancedly to whole assembly platform is given in the dispersion, makes whole assembly platform can bear more powerful single horizontal axis hydraulic generator, has reduced trend energy power generation facility's power generation cost by a wide margin. Particularly, the utility model discloses a horizontal axis hydraulic generator has "fixed point" in aqueous, has consequently avoided among the prior art horizontal axis hydraulic generator under the huge thrust action of rivers, thereby because rock the easy problem of damaging of resonance phenomenon of production. By adopting the large tidal current energy power generation device and the assembly platform thereof provided by the embodiment, the cost of tidal current energy power generation can be really reduced to be lower than that of thermal power generation, so that the commercial popularization and application of tidal current energy power generation are really realized.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a top view of a large tidal current energy power generation device according to a first embodiment of the present invention.

Fig. 2 is a side view of a large tidal current energy generation device according to a first embodiment of the present invention.

Fig. 3 is a partial schematic view of a large tidal current energy power generation device according to a second embodiment of the present invention.

Fig. 4 is a schematic view illustrating a fence of a large tidal current energy power generation device according to a third embodiment of the present invention.

Detailed Description

Fig. 1 is a top view of a large tidal current energy power generation device according to a first embodiment of the present invention. Fig. 2 is a side view of a large tidal current energy generation device according to a first embodiment of the present invention. The dotted circle on the right in fig. 1 is an enlarged schematic diagram of the dotted circle on the left. As shown in fig. 1 and 2, in the first embodiment, the large tidal current energy power generation device includes an assembly platform 1 and at least one horizontal axis hydro-generator 2, and the at least one horizontal axis hydro-generator 2 is installed in the assembly platform 1.

In the present embodiment, the assembly platform 1 includes at least four fixing piles 11, at least two nesting members 12, at least two force-bearing support members 13, and a support 14. One end of each fixed pile 11 is driven and fixed to the seabed F, and the other end extends to above the water surface P. At least four fixing piles 11 are connected into a whole through a bracket 14, and the four fixing piles 11 and the bracket 14 surround to form an installation space 15. Four spud piles 11 are arranged in left and right two rows along the water flow direction D, wherein at least two spud piles 11 in each row are arranged in sequence along the water flow direction D. Specifically, the at least four spud piles 11 are divided into two groups (i.e., two rows), each group including at least two spud piles 11. The line joining the cross-sectional areas of at least two of the pickets 11 in each group through the centre point is substantially parallel to the direction of water flow D (some minor deviation is allowed). Since each set of piles 11 is arranged in a row parallel to the flow direction D, the impact force of the water flow on the downstream piles 11 is greatly reduced after the upstream piles 11 are stopped. As shown in FIG. 1, the water flow direction is D at the time of flood tide and D' at the time of ebb tide. The "left" and "right" referred to herein are the left and right sides with respect to the direction of water flow. Specifically, two rows of the fixing piles 11 are located on the left and right sides, respectively, as viewed in the direction shown in fig. 1, i.e., from above the water surface.

In this embodiment, the support 14 comprises a plurality of rigid rods, each rigid rod connecting two of the spuds 11. The forces experienced by the entire assembly platform 1 are resolved by the support 14 transferring between the spuds 11. By arranging the bracket 14, at least four fixing piles 11 form a whole together, and the force applied to a single fixing pile 11 can be effectively transmitted to other fixing piles 11, so that the stress distribution of the whole assembly platform 1 is balanced. In this embodiment, the underwater portion and the above-water portion of the spud pile 11 are connected by a bracket 14. When the tidal current energy power generation device is located in a deeper sea area, the fixing piles 11 are longer, and the supports 14 can be arranged at multiple positions under water, so that the fixing piles 11 can be connected more firmly, and force can be dispersed more effectively. However, the present invention is not limited to this, and the connection position and the number of the brackets 14 can be set according to the specific requirements.

In practice, each pile 11 does not have to be installed completely perpendicular to the seabed F. In the present embodiment, the spud piles 11 on the water-facing side or the water-falling side (i.e., the lowermost and uppermost as shown in fig. 1) are tiltably inserted into the seabed F. The capability of each obliquely inserted fixing pile 11 to resist the impact force of water flow is about 1.5 times that of a vertically arranged fixing pile, namely, the obliquely arranged fixing pile 11 can bear and disperse larger impact force of water flow.

In this embodiment, the assembly platform 1 of the tidal current energy power generation device may include six fixing piles 11, the three fixing piles 11 are located on the left side of the horizontal-axis hydraulic generator 2, and the three fixing piles 11 are located on the right side of the horizontal-axis hydraulic generator 2. Three spud piles 11 located on the left or right side are arranged in order in the water flow direction D. The utility model discloses do not do any restriction to the concrete quantity of spud pile 11 yet. In other embodiments, the number of stakes may be 4, 8, or 12. Through setting up more spud piles 11, the impact force that horizontal axis hydraulic generator 2 was given to rivers can be transmitted for more spud piles 11, therefore rivers impact force can obtain the dispersion effectively to make whole trend can power generation facility can bear and resist bigger rivers thrust, consequently also improved assembly platform 1 and born the ability of single bigger horizontal axis hydraulic generator 2. In other words, the embodiment of the utility model provides an assembly platform 1 can support more powerful horizontal axis hydraulic generator 2, has improved single hydraulic turbine impeller and has added the upper limit of the power of single generator to realize trend and can power generation facility's commercial popularization and application. In addition, along with the increase of the 11 quantity of spud pile, can correspond the diameter that reduces every spud pile 11 to reduce the spud pile 11 and block the cross-section of rivers, improve horizontal axis hydraulic generator 2 and to the utilization ratio of rivers, make horizontal axis hydraulic generator 2's generating efficiency obtain promoting.

Specifically, taking the existing offshore wind power generation device mentioned in the background section of the present application as an example, the device can carry a maximum of 5MW of single installed power, but needs a fixing pile with a maximum diameter larger than 6m to carry the power. And this embodiment constitutes a whole through four piece at least spuds 11 and support 14 thereby the water thrust that will receive disperses, and every spud only need accomplish the diameter and be 1.3m can bear the weight of the horizontal axis hydraulic generator that single machine installed power is 5MW, therefore the diameter of spud can be reduced by a wide margin. The manufacturing difficulty and cost of each fixing pile are reduced. In addition, the installation process of a single fixing pile required to be fixed on the seabed can be very complicated. During installation, a pile driving platform formed by a plurality of auxiliary piles needs to be arranged around a single fixing pile, then after the single fixing pile is installed and fixed, a person is dispatched to send a ship to remove the auxiliary pile driving platform, even underwater operation is involved, and therefore the installation cost of the fixing pile is very high. However, this embodiment uses at least four stakes connected to one another to form a natural piling platform. Need not to set up in addition supplementary pile driving platform, reduced the installation cost of spud pile by a wide margin. Therefore, the sum of the manufacturing cost and the installation cost of four fixing piles with the diameter of 1.3m is far less than that of one fixing pile with the diameter of 6 m.

If each fixed pile of the embodiment has the diameter of 3m, the horizontal shaft hydraulic generator with the installed power of 20MW can be borne, the upper limit of the installed power of the existing single machine is broken, and the purpose of increasing the installed power of the single machine is really achieved. The maximum single installed power of the existing tidal current energy power generation device is only 2MW, and up to ten horizontal-axis hydraulic generators need to be operated to reach the generated energy of 20MW, and at least ten assembly platforms need to be arranged for installation. However, the utility model discloses tidal current energy power generation device of first embodiment only needs to set up a horizontal axis hydraulic generator and an assembly platform can realize 20 MW's generated energy, has reduced the cost by a wide margin for tidal current energy power generation device's commercialization application really becomes possible.

The cost of tidal current energy power generation devices is basically composed of two parts, one is the manufacturing cost and the installation cost of the generator, and the other is the manufacturing cost and the installation cost of the assembly platform. For example, the manufacturing cost and the installation cost of one 2.5MW horizontal-axis hydro-generator is 2000 ten thousand, the manufacturing cost and the installation cost of two 2.5MW horizontal-axis hydro-generators is 4000 ten thousand, and the manufacturing cost and the installation cost of one 5MW horizontal-axis hydro-generator is only 2600 thousand. In other words, regardless of the manufacturing cost and installation cost differential of the assembly platform, operating a more powerful horizontal axis hydro-generator will substantially reduce the cost per degree of electricity for the cost of the bare horizontal axis hydro-generator, not to mention that the manufacturing cost and installation cost of the assembly platform of the present embodiment is also much lower than the manufacturing cost and installation cost of the assembly platform of the prior art.

In the present embodiment, at least two nesting members 12 are separately sleeved on the main carrying piles at the left and right sides of the horizontal shaft hydro-generator 2 and located below the water surface P. In this embodiment, the assembly platform of the tidal current energy power generation device has 6 fixed piles, the fixed pile 11 located in the middle of the left row and the fixed pile 11 located in the middle of the right row are main load piles, and the two nesting components 12 are respectively sleeved on the main load piles at the left side and the right side along the water flow direction. In the embodiment, the nest 12 is circular, however, the present invention is not limited to the specific structure of the nest. In other embodiments, when the tidal current energy power generation device has 8 fixed piles, the two middle fixed piles in the left row and the two middle fixed piles in the right row can be main load piles, and each nesting member 12 can be of a double-ring structure and can be simultaneously sleeved on the two main load piles.

In this embodiment, one end of each of the at least two force-bearing supporting members 13 is respectively installed at the left and right sides of the horizontal axis hydraulic generator 2 along the water flow direction D, and the other end thereof is respectively and correspondingly installed with the nesting member 12. In this embodiment, taking the force-receiving supporting member 13 located on the left side in fig. 1 as an example, one end of the force-receiving supporting member 13 is referred to as a right end, and the other end of the force-receiving supporting member 13 is referred to as a left end. Taking the force-receiving supporting member 13 located on the right side in fig. 1 as an example, one end of the force-receiving supporting member 13 is referred to as a left end, and the other end of the force-receiving supporting member 13 is referred to as a right end.

The force-receiving support member 13 and the nest member 12 of the present embodiment combine to withstand the impact force of water flow against the horizontal-axis hydro-generator 2. Specifically, as shown in fig. 1, the water flow rushes to the horizontal axis hydraulic generator 2 from the bottom up along the water flow direction D, and since one ends of the two force-bearing support members 13 are fixed to both sides of the horizontal axis hydraulic generator 2, the thrust of the water flow to the horizontal axis hydraulic generator 2 can be directly transmitted and decomposed on both sides. The thrust is distributed evenly to each anchor stud 11, in turn by means of the stressed support 13, the nest 12, the main load stud and the support 14, all the anchor studs 11 being stressed in common. Meanwhile, because the nested piece 12 is fixed on the main pile, the nested piece 12 can generate a blocking force from top to bottom as seen in the direction of fig. 1 to the stress supporting piece 13, and the effects generated between different forces are offset, so that a balance is achieved, the stability of the horizontal shaft hydraulic generator 2 in water is further ensured, and the upper limit that the horizontal shaft hydraulic generator 2 can bear water flow thrust is improved.

In the prior art, the horizontal shaft hydraulic generator is fixed on the seabed through a single bearing pile, and the single bearing pile can bear the whole impact force of water flow on the horizontal shaft hydraulic generator. The bending moment and the shearing force generated in the process are very large, and in order to ensure that the bearing pile is not overloaded, the upper limit is set on the single-machine installation scale of the horizontal-axis hydraulic generator. However, the assembly platform of the present embodiment provides at least two force bearing points at the "waist" of the whole power generation device, so as to effectively disperse the impact force of the water flow on the horizontal axis hydraulic generator in the transverse direction. Because the tidal current energy generating device generates electricity by utilizing the kinetic energy of water flow, the larger the thrust of the water flow is, the larger the generated energy is, and therefore, the tidal current energy generating device of the embodiment can bear a horizontal shaft hydraulic generator with higher power.

The nest 12 and the main load pile of this embodiment may be secured by jacks or fixing bolts. However, the present invention is not limited to this. In another embodiment, the nest 12 and the primary load post may achieve an interference fit. Particularly, when the stressed supporting piece 13 is sleeved on the main load-bearing pile, the embedded piece 12 and the main load-bearing pile can be completely clamped without additionally arranging a jack or a fixing bolt, and the embedded piece and the main load-bearing pile are fixed without looseness. When in installation, the installation personnel are not needed to enter the water correspondingly to carry out the installation operation, and the person passing pipe is not needed to be additionally arranged.

In the present embodiment, the number of the nests 12 and the force-receiving supports 13 is two. However, the present invention is not limited to this. In other embodiments, the number of the nested pieces and the number of the stressed supporting pieces can be four, and the left side and the right side of the horizontal-axis hydraulic generator along the water flow direction can be respectively provided with two nested pieces and two stressed supporting pieces. In this embodiment, the length direction of the force-bearing support 13 is perpendicular to the water flow direction D and parallel to the horizontal plane P, so as to reduce the steel consumption of the force-bearing support 1 and the bending moment generated by the force-bearing support 1. The present invention is not limited to this. In other embodiments, the length direction of the force-bearing support may be perpendicular to the water flow direction, but may not be parallel to the horizontal plane, i.e. the force-bearing support may be disposed obliquely. The more the force receiving support 13 is inclined, the longer the length of the force receiving support 13 will become, the greater the amount of steel will become, and the bending moment generated will also increase. Therefore, the combined ends of the force bearing support 13 and the nest 12 need to be located below the water surface.

In this embodiment, one end of each of the two force-bearing supporting members 13 is directly mounted on the generator portion of the horizontal-axis hydro-generator 2 and is located on the left and right sides. However, the present invention is not limited to this. In other embodiments, the horizontal axis hydro-generator may have a suspension support column, and one end of the two force-bearing support members 13 may be mounted on the suspension support column and still be located on both sides of the horizontal axis hydro-generator 2. In other words, one end of the force-receiving support member is directly or indirectly mounted on the horizontal-axis hydro-generator 2, thereby resolving the force received by the horizontal-axis hydro-generator 2 toward both sides. Preferably, the two force-bearing support members 13 are fixed on both sides of the horizontal-axis hydro-generator 2 as close as possible to the horizontal-axis hydro-generator, and as far as possible, the force of decomposition and transmission is weaker, and the bending moment generated by the suspension support columns is increased.

In the actual installation process, the horizontal shaft hydraulic generator 2, the stressed supporting piece 13 and the nesting piece 12 are welded and fixed on the shore, and the inner module is formed by assembling. The prototypes of the fixed piles 11 and the support 14 are fixedly connected with each other by welding on the shore, and then the prototypes are transported to an installation water area, and at least four fixed piles 11 are respectively driven to complete the installation of the assembly platform 1. Then, the inner module is hung into the installation space 15 of the assembly platform 1 from top to bottom from the water surface, and then the nested piece 12 and the main load pile are fixed, namely the whole tidal current energy power generation device is installed. In this embodiment, all the manufacturing and installation actions of the tidal current energy power generation device and the assembly platform thereof can be completed above the water surface, thereby avoiding underwater operation, reducing the construction difficulty, improving the safety of constructors and greatly reducing the construction and installation cost.

In this embodiment, how each fixing pile 11 is fixed on the seabed F, the pile driving method disclosed in another chinese patent (publication No. CN105401564) of the present invention may be adopted for pile driving, and other pile driving methods may also be adopted, and will not be described herein. The present invention is not limited to this. It should be noted that the pile driving mode of the present embodiment only can be the same as the pile driving mode disclosed in CN10540156, but the structure and installation mode of the whole tidal current energy power generation device are different from the structure and installation mode disclosed in CN 10540156.

First, the utility model discloses a horizontal axis hydraulic generator in CN10540156 installs earlier in the internal frame, later inserts the internal frame in the outer frame. The arrangement of the inner frame and the outer frame can lead to the great increase of steel consumption and the great rise of cost. Will the utility model discloses a trend can power generation facility drops into practical application back before the people, utility model people find that the thrust that rivers produced is huge unthinkable, can produce the thrust that reaches 2000 ability 3000 tonnes of force maximally. Therefore, the thrust of water flow to the hydraulic generator can be offset only by increasing the weight of the inner frame and relying on the friction caused by the self gravity, and thus, the steel consumption and the cost are increased sharply. The use of frame has been abandoned completely to this embodiment, and whole assembly platform need not steel except that need use a small amount of steel reinforcement cage at the cast in place concrete formation spud pile in-process, and except that steel was used to atress support piece, nested spare and support, other parts do not need steel completely. The steel consumption of the whole assembly platform is reduced in a geometric hierarchy mode, and the manufacturing cost is greatly reduced.

The utility model discloses the people compares the discovery through practical application, implements the utility model discloses utility model's installation method and structure before the people, a unit installation scale is 200 KW's horizontal axis rivers generator, and the diameter of impeller is 5.4m, and the cross-section of impeller is 22.9m²The hydraulic generator can bear the thrust of 23 tons of water flow, and at the moment, the inner frame needs more than 230 tons, so that the safe operation of the hydraulic generator can be guaranteed. However, the total platform weight of the tidal current energy power generation device of the embodiment only needs to be 125 tons (if buoyancy generated by the hollow stressed support member, the hollow generator cabin and the like is removed, only 25 tons of gravity are actually generated in water), namely, a single-installed-scale 1.5MW horizontal-axis hydro-generator can be stably operated, the diameter of the impeller is 15m, and the section of the impeller is 177m²The turbine generator is subjected to thrust of 177 tons of water flow. If the installation method and structure of the present invention, which was previously practiced by the present invention, is used, a frame of up to 1800 tons is required to carry a 1.5MW horizontal axis turbine, and this weight of the frame is not possible at all from a technical or cost perspective. Therefore, the problem of the light frame limits the single-machine scale of the existing horizontal-shaft hydraulic generator to be large.

Next, the horizontal axis hydro-generator in CN10540156 is rotatably fixed to the uppermost and lowermost portions of the inner frame by a central rotating shaft. Under the huge thrust effect of rivers, horizontal axis hydraulic generator produces the vibration very easily in the operation process, and the generator scale is bigger, and the vibration is more serious. The severe vibration can cause the components in the horizontal shaft hydraulic generator to generate resonance, so that the components are damaged. Therefore, will the utility model discloses a trend can power generation facility before the people drops into practical application after, the discovery adopts the mounting means in CN10540156, can only the horizontal axis hydraulic generator of safe operation 200KW or 300KW, and if the unit scale reaches more than 1MW, horizontal axis hydraulic generator will damage very easily, and this makes horizontal axis hydraulic generator's unit scale unable breakthrough. However, the tidal current energy power generation device provided by the embodiment is provided with at least two 'constraint points' at or near the waist of the horizontal-axis hydraulic generator, the horizontal-axis hydraulic generator is directly and firmly fixed with the stressed supporting piece, then the stressed supporting piece is also firmly fixed with the nesting piece, and the nesting piece and the support are also firmly fixed with the fixing pile. In other words, the horizontal shaft hydraulic generator and the assembly platform are firmly fixed, no component can vibrate in the water beyond the safety range, and the problem of resonance is avoided. Therefore, the tidal current energy power generation device provided by the embodiment can smoothly operate the horizontal shaft hydraulic generator with larger installed scale.

In the present embodiment, in order to effectively reduce the damage of the horizontal axis hydro-generator 2 caused by the marine foreign matter (such as the marine trash or the floating ice), it is necessary to provide fences both upstream and downstream of the horizontal axis hydro-generator 2. Because the marine waste is more, the fence needs to clean the surface waste regularly after being used for a period of time, so that the water flow can be ensured to smoothly flow into the horizontal shaft hydraulic generator 2 without being blocked by the waste, and the power generation efficiency is ensured. In addition, because the water flow is turbulent, some garbage is sharp, and even if the fence is made of steel wires, the fence still has the problem of damage, so the fence needs to be maintained and replaced frequently. The existing fence cleaning, installing and maintaining personnel must dive into water to operate, the operation difficulty is high, the efficiency is low, and because the current around the tidal current energy generator collides with the vortex easily, the maintenance and the cleaning are dangerous.

In this embodiment, the assembly platform 1 further includes at least two sets of fence guide grooves 16 for installing or fixing a fence, the two sets of fence guide grooves 16 are respectively disposed on both sides of the upstream and downstream of the horizontal-axis hydro-generator 2 (if the water flow direction is as shown by D in fig. 1, the lower side in fig. 1 is the upstream, and the upper side in fig. 1 is the downstream), and each set of fence guide grooves 16 passes from above the water surface to below the water surface. In this embodiment, each set of fence guide slots 16 comprises two fence guide slots, one set of fence guide slots 16 being located on the upstream side of the upstream two spuds 11 in fig. 1 (the two lowermost spuds in fig. 1), and the other set of fence guide slots 16 being located on the downstream side of the downstream two spuds 11 in fig. 1 (the two uppermost spuds). In practical application, the left and right sides of the fence can be inserted into the fence guide slots 16 from top to bottom along a group of fence guide slots 16, and then slide to the bottom end under the action of gravity, so as to complete the installation and fixation of the fence. Through setting up fence guide slot 16 for the installation of fence is more simple and convenient, need not carry out the installation operation in the sea, directly carries out the installation that the fence can be accomplished to operation on the sea. In particular, when the fence is to be cleaned or replaced, the fence can be pulled out along the fence guide groove 16 from bottom to top, and the person only needs to operate on the water surface. Therefore, the provision of the fence guide groove 16 also facilitates the fence cleaning and replacing work. By providing the fence guide groove 16, the cost of installing the fence and maintenance and replacement is reduced. The present embodiment does not set any limit to the specific type of the fence.

In this embodiment, the assembly platform 1 comprises at least one people tube 17, the at least one people tube 17 passing from above the water surface to below the water surface, so that a person can go below the water surface through the people tube 17 for maintenance or fixing operations. In this embodiment, the number of the people passing pipelines 17 is two, the two people passing pipelines 17 are respectively located in the main carrying piles at the two sides of the horizontal shaft hydraulic generator 2, and personnel can reach the position below the water surface through the people passing pipelines 17 to install and fix the nested piece 12 and the main carrying piles. In this embodiment, concrete is poured into the lower portion of the main load pile, and the upper portion is hollow, so that a person can reach the position below the water surface through the main load pile to install and fix the main load pile and the nesting piece. In other words, the main loading pile with a hollow upper part can function as the man-through pipeline 17, so that a special pipeline does not need to be additionally arranged to serve as the man-through pipeline 17, only a ladder stand needs to be arranged in the main loading pile, and personnel can enter the water through the ladder stand inside the main loading pile and reach the fixing position of the main loading pile and the nesting part 12, so that the fixing operation (such as adjusting a fixing bolt and the like) is carried out. The present invention is not limited to this, and in other embodiments, the man-through duct 17 may be disposed along the outside of the main pile.

In this embodiment, the assembly platform 1 further comprises at least one blower 181 and a ventilation pipe 182, the ventilation pipe 182 being fixedly or detachably arranged along the inside of the people duct 17 or along the outside of the people duct 17, the ventilation pipe 182 passing from above the water surface P to below the water surface P to enable ventilation in the work area below the water surface. The existing tidal current energy power generation device does not consider the situation of underwater installation or maintenance. The utility model discloses the people considers before the maintenance under the water, but neglected because the long-time operation of inside machine, the high temperature that the machine generated heat and produces also can be accompanied by the too high problem of poisonous and harmful gas and carbon dioxide concentration. If underwater operation is needed, personnel need to stay underwater for a long time, and oxygen deficiency or carbon dioxide poisoning and other conditions are easy to occur. The blower 181 and the ventilation pipe 182 of the embodiment form a fresh air system, and the life safety of maintenance personnel or installation personnel entering underwater is greatly guaranteed. When personnel need to enter the working area below the water surface to work, the blower can be started to change air in the working area below the water surface. In specific applications, the fresh air system may have a more complex structure, such as an independent air supply system and an independent air exhaust system, which are not described herein again.

In this embodiment, the assembly platform 1 further comprises at least one suction pump 183 and at least one drainage pipe 184, the drainage pipe 184 is fixedly or detachably disposed along the inside of the people tunnel 17 or along the outside of the people tunnel 17, the drainage pipe 184 is communicated from above the water surface P to below the water surface P, and the suction pump 183 sucks the accumulated water in the working area below the water surface and discharges the accumulated water to above the water surface through the drainage pipe 184. Because most of the whole tidal current energy power generation device is located in water, after the tidal current energy power generation device runs for a long time, the sealing ring is easy to loosen, and the situation that the sealing ring leaks is difficult to guarantee. Without any protective measures, maintenance personnel or installation personnel may be exposed to life hazards if they enter the underwater work area from the people tube 17. Through setting up suction pump 183 and drain pipe 184, personnel's life safety has been ensured greatly. In this embodiment, before the personnel need to work underwater, the water pump 183 is started to operate for a period of time, and whether the water drainage pipe 184 drains accumulated water is observed. Personnel may not enter the people tunnel 17 until no significant water is drained from the drain 184. When the personnel work underwater, the water pump 183 keeps working until the personnel finish working back to above the water surface. However, the utility model does not limit the working form of the water pump. In other embodiments, the water pump 183 may be operated periodically to pump the accumulated water inside and drain the accumulated water through the drain pipe 184 to the above the water surface, thereby preventing the accumulated water from damaging the components and ensuring the life safety of the workers. In this embodiment, ventilation pipe 182, drainage pipe 184, and ventilation pipe 17 may all be located within spud 11. However, the present invention is not limited to this. In other embodiments, a dedicated ventilation pipe 182, a drainage pipe 184, and a man-way pipe 17 may be provided along the outside of the spud pile 11 to pass from above water to below water.

In the present embodiment, each row of the fixing piles 11 is provided with a side plate 19 toward one side of the horizontal shaft hydro-generator 2. Thereby curb plate 19 can form the water course and play the rectification effect, can be with rivers gathering, leads horizontal axis hydraulic generator 2 better to improve the generating efficiency. In another embodiment, the horizontal axis hydro-generator 2 may be provided with side plates on the upper, lower, left, and right sides thereof, so as to form a water channel for intensively guiding water toward the horizontal axis hydro-generator 2.

As shown in fig. 2, in the embodiment, each of the fixing piles 11 of the assembly platform 1 is provided with a concrete protection device 111 in the area above the lowest tide level line L to protect each fixing pile 11 from strong corrosion of intertidal zone, so as to greatly prolong the service life of the fixing pile 11, and thus the service life of the assembly platform 1, and reduce the maintenance frequency and cost. Because water plays the role of isolating oxygen in the air, the part of the fixing pile 11 under the water is not easy to corrode, and the part of the fixing pile 11 above the water surface is most easily rotten. If the concrete protection device is not arranged, the part of the fixing piles 11 on the water is damaged once, so that the force transmission among the fixing piles 11 is not balanced, and the unbalance and even collapse of the whole assembly platform 1 are likely to be caused. By providing the concrete protection device 111, the service life of the entire assembly platform 1 can be as long as 50 years. Since the height of the water surface P varies according to the rising tide and the falling tide, the lowermost end of the concrete protecting device 111 is preferably disposed at the lowest tide line L. In practical applications, the lowest end of the concrete protection device 111 may be lower than the lowest tide line L. In a specific application, a protective sleeve is provided on the area of the spud pile 11 above the lowest tide line L, and then concrete is poured into the protective sleeve, thereby forming the concrete protector 111.

In this embodiment, the assembly platform further includes a sealing device 185 and a fixing element 186, the fixing element 186 includes at least one fixing bolt, and the sealing device 185 is correspondingly disposed at the fixing element 186. In the installation process of the tidal current energy power generation device of the embodiment, the horizontal-axis hydraulic generator 2, the at least two stressed supporting pieces 13 and the at least two nested pieces 12 are welded and connected to form the inner module on the shore. After the spud pile 11 has been driven into position on the seabed F (including but not limited to drilling holes in the seabed, driving into the bed rock, pouring concrete into the pile to form a reinforced concrete cast-in-place pile), the inner module is suspended from above into the installation space 15 located in the water. The person then enters through the man-way duct 17 (in this embodiment along the internal ladder of the main pile) and by adjusting the fixing assembly 186 (for example by tightening the fixing bolts) the nest 12 and the main pile are clamped, thereby fixing the nest 12 and the main pile. So far, the whole inner module and the assembly platform 1 are fixed, and the whole tidal current energy power generation device is installed. However, the present invention is not limited to this. In another embodiment, the man-in-pipe 17 may be routed into the force bearing support 13, and then a person enters the force bearing support 13 to secure the nest 12 and the main load pile together via the sealing device 185 and the securing assembly 186. In yet another embodiment, nest 12 and the primary load post are snap fit, thus eliminating the need for seal 185 and retaining assembly 186.

In the actual manufacturing process, it is difficult to ensure that the size of the inner diameter of the nesting part can be completely matched with the size of the outer diameter of the main load pile. Because of tolerances, there will be a gap between the main load peg and the nest 12. In order to avoid the horizontal shaft hydraulic generator 2 from shaking, an installer can enter the underwater adjusting fixing assembly 186 through the through pipeline 17 (for example, screwing the fixing bolt), so that the nested part 12 is firmly clamped on the outer wall of the fixing pile 11, and the shaking of the horizontal shaft hydraulic generator 2 is avoided. The horizontal-axis hydro-generator 2 is firmly positioned regardless of the rising tide or the falling tide, and does not generate a vibration phenomenon beyond an acceptable range. During this process, the blower 181 is operated to supply fresh air from the ventilation pipe 182. And the suction pump 183 can be operated all the time to drain possible accumulated water from the drain pipe 184, thereby ensuring the life safety of personnel. When the horizontal shaft hydraulic generator 2 needs to be lifted out of water, the fixing component 186 can be loosened, so that the fixing relation between the horizontal shaft hydraulic generator 2 and the main load pile is removed, and the detachable installation and the fixation of the horizontal shaft hydraulic generator 2 are realized.

In this embodiment, the tidal current energy power generation device further comprises at least one suspension support column 31, and for a closed hollow structure, one end of the suspension support column 31 is communicated with the horizontal-axis hydraulic generator 2, so that personnel can enter the horizontal-axis hydraulic generator 2 through the suspension support column 31, and the other end of the suspension support column 31 is communicated with the water surface P. Since the hanging support column 31 is a closed hollow structure, a ladder stand can be arranged inside the hanging support column 31. Personnel can enter the inside of the horizontal-axis hydro-generator 2 through the ladder inside the middle suspension support column 31 to perform work (such as maintenance work of replacing a seal ring, replacing engine oil, and the like or layout work of pipeline lines). When the horizontal axis hydraulic generator 2 breaks down, the personnel can directly enter the inside of the horizontal axis hydraulic generator 2 for maintenance without hanging the horizontal axis hydraulic generator 2 out of the water surface. The suspension support column 31 in the tidal current energy power generation device of the embodiment is correspondingly provided with an air blower 181, a ventilation pipe 182, a water suction pump 183 and a water drainage pipe 184 so as to guarantee the life safety of underwater workers.

Most of the existing tidal current energy power generation devices are provided with a single bearing pile below a horizontal shaft hydraulic generator, and the installation mode has two obvious defects. The first is that the single bearing pile support mentioned above will bear the whole thrust of water flow to the horizontal shaft hydraulic generator, so that the bending moment and the shearing force are too large, and therefore the horizontal shaft hydraulic generator with larger single machine scale cannot be borne, and the power generation cost is high. And secondly, if the horizontal shaft hydraulic generator needs to be maintained, people need to detach the connection between the horizontal shaft hydraulic generator and the bearing pile under water, and then the horizontal shaft hydraulic generator is lifted off the sea surface, so that the maintenance potential safety hazard is large. In addition, in order to ensure the normal operation of the horizontal shaft hydraulic generator, the bearing pile and the horizontal shaft hydraulic generator are very firmly fixed, which means that the connection relationship between the bearing pile and the horizontal shaft hydraulic generator is very difficult to remove, and even if the horizontal shaft hydraulic generator is not lifted under water for operation, the maintenance difficulty is very high. Therefore, many existing tidal current energy power generation devices are not maintained at all, and once the horizontal shaft hydraulic generator is damaged (for example, the sealing ring is loosened due to long-term use to cause water inflow inside the horizontal shaft hydraulic generator or engine oil of the horizontal shaft hydraulic generator to be replaced and the like), the whole power generation device is directly scrapped. The problem is also one of the important reasons that the conventional tidal current energy power generation device is short in service life and high in cost, so that the tidal current energy power generation device cannot be commercialized.

However, in the horizontal-axis hydro-generator 2 of the present embodiment, when maintenance is required, a maintenance worker can directly enter the inside of the horizontal-axis hydro-generator 2 through the suspension support column 31 to directly perform underwater maintenance. In practical application, the service life of the assembly platform of the embodiment can be as long as 50 years, but the upper limit of the use of the horizontal shaft hydraulic generator is 20 years, when the horizontal shaft hydraulic generator 2 reaches the service life, only the fixed connection between the horizontal shaft hydraulic generator 2 and the assembly platform 1 needs to be removed, the horizontal shaft hydraulic generator 2 can be lifted out of the water surface from the water from bottom to top, and a new horizontal shaft hydraulic generator 2 is replaced for installation. The horizontal axis hydraulic generator 2 of this embodiment is through the separable mounting means of inverted hanging, and the maintenance replacement cost and the degree of difficulty of horizontal axis hydraulic generator 2 are less than the maintenance cost and the degree of difficulty of the horizontal axis hydraulic generator of direct fixation on the seabed far away.

The horizontal axis hydraulic generator 2 of this embodiment is fixed by the atress support piece 13 of suspension support column 31 and both sides under water, ensures that horizontal axis hydraulic generator 2 can not take place to rock under the huge thrust effect of rivers, and the vibration of production is also within safety range. Therefore, the tidal current energy power generation device provided by the embodiment can operate a larger-scale horizontal-axis hydraulic generator, which also means that the single installed power of the horizontal-axis hydraulic generator is larger. The maximum single installed power that current trend can power generation facility can bear is 2MW, and the trend of this embodiment can directly bear and operate the horizontal axis hydraulic generator that single installed power is 5MW even 10MW, 20 MW. The method greatly promotes the development of the ocean energy power generation industry and promotes the progress of the technology, and brings fundamental change to the industry.

Meanwhile, even if the existing tidal current energy power generation device adopts 2MW single installed power, the problem of maintenance and the like is not solved, and the continuous power generation cannot be realized. Even if maintenance of part of tidal current energy power generation devices is considered, the power generation cost of tidal current energy power generation is far higher than that of other energy power generation due to high maintenance cost, so that the commercial value of the conventional tidal current energy power generation device is small all the time. The suspension support column of this embodiment not only plays the supporting role, can also lead to the people and advance to horizontal axis hydraulic generator inside and maintain, greatly reduced cost of maintenance.

In this embodiment, the large tidal current energy power generation device further comprises at least one connecting member 4, and the at least one connecting member 4 transversely or longitudinally connects one end of the suspension support column 31 above the water surface and the assembly platform 1. When the horizontal shaft hydraulic generator 2 needs to be separated from the assembly platform 1, the connection relation between the connecting piece 4 and the assembly platform 1 is removed, and the fixing component 186 is loosened to lift the horizontal shaft hydraulic generator 2 out of water.

In another embodiment, the tidal current energy power generation device may not have a suspension support column, the two people passing pipes 17 may respectively communicate with the force-bearing support 13, the two force-bearing supports 13 may be hollow structures, and a person may reach the inside of the horizontal axis hydro-generator 2 through the people passing pipes 17 and the force-bearing supports 13 to perform maintenance operations (such as oil replacement, gear replacement, seal replacement, etc.) on the inside of the horizontal axis hydro-generator 2. The ventilation pipe 182 and the water discharge pipe 184 may be communicated with the inside of the force receiving support 13, and the ventilation pipe 182 and the water discharge pipe 184 may be arranged along the hollow force receiving support 13 up to the inside of the horizontal axis hydro-generator 2. However, the present invention is not limited to this. In other embodiments, the assembly platform may only have one man-through pipe, and a person may reach the stress supporting member on one side through the man-through pipe, to fixedly mount the nested member 12 and the main load pile on one side, and may also reach the inside of the horizontal axis hydraulic generator through the stress supporting member, to perform maintenance operation on the horizontal axis hydraulic generator, and may also sequentially pass through the stress supporting member on one side, the horizontal axis hydraulic generator, and the stress supporting member on the other side, to fixedly mount the nested member 12 and the main load pile on the other side. In another embodiment, the assembly platform may be provided with a dedicated man-way conduit directly communicating with the interior of the horizontal axis hydro-generator from above the water surface.

Fig. 3 is a partial schematic view of a large tidal current energy power generation device according to a second embodiment of the present invention. The assembly platform, horizontal axis hydro-generator, spud 11, concrete guard, nest 12, stressed support, bracket, mounting space, fence channel, people's pipe, blower, ventilation pipe, suction pump, drain pipe, side plate, etc. of the second embodiment may be substantially the same as the structure and function of the corresponding elements of the first embodiment. Only the differences will be described below.

In the second embodiment, the assembly platform further includes two shock absorbing devices 21, and each shock absorbing device 21 is disposed between the nest 12 and the fixing pile 11. The shock absorbing device 21 may be made of a special polyethylene polymer material, a rubber material, or a spring. By providing the damper 21, the resonance that may be generated by the horizontal shaft hydro-generator can be effectively reduced.

Fig. 4 is a schematic diagram of a fence according to a third embodiment of the present invention, and a right dotted circle in fig. 4 is a top view of a left dotted circle. The assembly platform, horizontal axis hydro-generator, spud pile, concrete guard, nest, stressed support, bracket, mounting space, fence channel, man-way pipe, blower, ventilation pipe, suction pump, drain pipe, side plate, etc. of the third embodiment may be substantially the same as the structure and function of the corresponding elements of the first embodiment. Only the differences will be described below.

In this embodiment, the assembly platform includes at least two fences 3 respectively disposed on both sides of the upstream and downstream of the horizontal-axis hydro-generator 2, and a width W of each fence 3 in the water flow direction is greater than or equal to 8 cm. The existing tidal current energy power generation device usually ignores the damage of foreign matters (such as ocean garbage, floating ice in the sea and the like) in the sea to the impeller of the hydraulic generator. Utility model people have noticed this point, consequently adopted the mode that sets up the fence to reduce the probability that ocean foreign matter is drawn into in the impeller. However, after years of practice, it is found that if the fence is formed by weaving steel wires, the steel wire joints rub against each other through continuous impact of water flow, the thickness of the steel wires at the joints becomes thinner continuously, and finally the steel wires break, so that the function of the fence for intercepting marine foreign matters is lost. More importantly, the broken steel wires can be twisted into the impeller of the hydraulic turbine generator to damage the blades, so that the whole horizontal shaft hydraulic turbine generator is damaged. Therefore, the impeller is not protected, and maintenance cost is increased unexpectedly. Therefore, by setting the width of the fence 3 in the water flow direction to be greater than or equal to 8 cm, the fence will not be damaged again regardless of the impact of the water flow. Due to the particularity of the field, the cost of the tidal current energy horizontal shaft hydraulic generator is greatly increased when the hydraulic generator is repaired or replaced every time, and the commercial application of the tidal current energy power generation device is hindered. The technical personnel in the field often fall into the wrong area before, and the problem is considered theoretically, but the economic applicability of the power generation device after the power generation device is really put into operation is neglected. This parameter of 8 centimetres is the utility model discloses the people is through the continuous practice accumulation, summarizes experience training, confirms at last to guarantee that the fence has long enough life's parameter.

In this embodiment, the height of each fence grid along the depth direction is still about 8 mm. In practical application, the width W of the fence 3 along the water flow direction can be 30cm, so that the ice impact in the sea area near the northern part of canada can be effectively prevented, and the steel wire can not be broken by twisting. In this embodiment, the length of the fence perpendicular to the water flow direction and parallel to the horizontal plane is determined according to the size of the assembly platform installed correspondingly, but the present invention is not limited thereto, and may be, for example, 15m by 20 m. The height of the fence along the water depth direction is determined according to the stress condition of the water flow environment of the implementation ground, and the patent does not limit the height specifically. The meshes of the fence can be in a square or diamond structure, the size of the distance between the meshes is not limited, and the meshes can be 30cm by 30 cm. In addition, the patent does not limit the concrete materials of the fence bracket and the barrier net.

All the features of all the embodiments mentioned in the present application can be freely combined and used according to practical situations. For example, the fence of the third embodiment may be applied to the tidal current energy power generation device of any one of the first and second embodiments, and the fence of the third embodiment may also be applied to any existing tidal current energy power generation device. The tidal current energy power generation device of any one of the first embodiment and the second embodiment can also adopt fences with other structures. In the tidal current energy power generation devices of the first to third embodiments, one or more horizontal-axis hydraulic generators may be installed in the water depth direction.

To sum up, the utility model discloses a link together four spuds and support and form installation space, then in horizontal axis hydraulic generator was fixed in installation space, rather than installing horizontal axis hydraulic generator in the frame like prior art, reduced steel's use by a wide margin, reduced manufacturing and installation cost. And, the utility model discloses a set up atress support piece and the nested piece that is located horizontal axis hydraulic generator both sides, can transmit both sides with the thrust of the rivers that horizontal axis hydraulic generator received balancedly to whole assembly platform is given in the dispersion, makes whole assembly platform can bear more powerful single horizontal axis hydraulic generator, has reduced trend energy power generation facility's power generation cost by a wide margin. Particularly, the utility model discloses a horizontal axis hydraulic generator has "fixed point" in aqueous, has consequently avoided among the prior art horizontal axis hydraulic generator under the huge thrust action of rivers, thereby because rock the easy problem of damaging of resonance phenomenon of production. Through adopting the large-scale tidal current energy power generation device and the assembly platform thereof provided by the application, the cost of tidal current energy power generation can be really reduced to be lower than that of thermal power generation, so that the commercial popularization and application of tidal current energy power generation are really realized.

Although the present invention has been described with reference to the preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but is capable of other modifications and variations without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The utility model provides a large-scale trend can power generation facility's assembly platform, installs at least one horizontal axis hydraulic generator in it, its characterized in that, large-scale trend can power generation facility's assembly platform includes:

a support;

the at least four fixed piles are connected into a whole through a support and surround to form an installation space, the at least one horizontal-axis hydraulic generator is installed in the installation space, one end of each fixed pile is fixed on a seabed in a piling mode, the other end of each fixed pile extends to a position above the water surface, the at least four fixed piles are distributed in left and right rows along the water flow direction, at least two fixed piles in each row are sequentially distributed along the water flow direction, and at least one fixed pile in the at least two fixed piles in each row serves as a main load pile;

the at least two nesting pieces are respectively and separably sleeved on the main load piles at the left side and the right side of the horizontal shaft hydraulic generator and are positioned below the water surface;

and one ends of the at least two stress supporting pieces are respectively arranged at the left side and the right side of the horizontal shaft water turbine along the water flow direction, and the other ends of the at least two stress supporting pieces are respectively correspondingly provided with nested pieces so as to resist the impact force of water flow on the horizontal shaft water turbine generator.

2. The assembly platform of a large tidal current energy power generation device according to claim 1, further comprising at least two sets of fence guide grooves for installing or fixing fences, which are respectively arranged at the upstream and downstream sides of the horizontal-axis hydraulic generator, wherein each set of fence guide grooves passes from above the water surface to below the water surface.

3. The assembly platform of a large tidal current energy power generation device according to claim 1, further comprising at least one people through pipe, one end of the at least one people through pipe is open above the water surface, and the other end of the at least one people through pipe is open below the water surface, so that people can reach below the water surface to install and fix the main carrying pile and the nesting component.

4. A large tidal current energy power generation assembly platform according to claim 3, further comprising at least one air blower and one ventilation pipe, the ventilation pipe being fixedly or detachably arranged along the inside or outside of the through-air duct, the ventilation pipe passing from above the water surface to below the water surface to enable ventilation in the work area below the water surface.

5. The assembly platform of a large tidal current energy power generation device according to claim 3, further comprising at least one water suction pump and at least one water drainage pipe, wherein the water drainage pipe is fixedly or detachably arranged along the inside of the manned pipeline or along the outside of the manned pipeline, the water drainage pipe is communicated from above the water surface to below the water surface, and the water suction pump sucks accumulated water in a working area below the water surface and discharges the accumulated water to above the water surface through the water drainage pipe.

6. The assembly platform of the large tidal current energy power generation device according to claim 1, wherein the lower part of the main carrying pile is poured with concrete, and the upper part is hollow, so that people can reach the position below the water surface through the main carrying pile to mount and fix the main carrying pile and the nesting piece.

7. The assembly platform of a large tidal current energy power generation device according to claim 1, further comprising at least one suspension support column, wherein the suspension support column is a closed hollow structure, one end of the suspension support column is communicated with the horizontal shaft hydraulic generator, so that personnel can enter the inside of the horizontal shaft hydraulic generator through the suspension support column, and the other end of the suspension support column is opened above the water surface.

8. The assembly platform of a large tidal current energy power generation device according to claim 1, further comprising a sealing device and a fixing component, wherein the fixing component fixes the main loading pile and the nesting component, and the sealing device is correspondingly arranged at the fixing component.

9. The assembly platform of a large tidal current energy generation device according to claim 1, further comprising at least two shock absorbing devices, each shock absorbing device being disposed between the nest and the main load pile.

10. A large tidal current energy power generation device is characterized by comprising:

the assembly platform of any one of claims 1-9;

at least one horizontal shaft hydro-generator detachably mounted in the assembly platform;

at least one suspension support column is of a closed hollow structure, one end of each suspension support column is communicated with the horizontal shaft hydraulic generator, so that personnel can enter the horizontal shaft hydraulic generator through the suspension support columns, and the other end of each suspension support column is communicated with the water surface.

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