Large-sized tidal power generation device and assembly platform thereof

Abstract

To provide a large-sized tidal power generation device capable of greatly reducing a use amount of steel and reducing a manufacturing cost and a mounting cost and an assembly platform.SOLUTION: In a large-scale tidal power generation device and its assembly platform (1), at least one horizontal axis hydroelectric generator (2) is mounted in the assembly platform. Here, the assembly platform includes at least four fixed piles (11), at least two force-receiving prevention parts (12), at least two force-receiving support parts (13), and a support frame (14). The at least four fixed piles (11) are connected integrally by the support frame to surround and form an installation space (15), and the at least one horizontal axis hydroelectric generator is mounted in the installation space. One end of each fixed pile is driven into the seabed so as to be fixed thereto, and the other end extends above the water surface.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to the field of tidal power generation, and in particular to a large-scale tidal power generation device and its assembly platform. [Background technology]

[0002] Ocean energy (including tidal energy, ocean wave energy, temperature difference energy, salinity difference energy and ocean current energy) is a kind of clean and non-polluting renewable energy, with abundant reserves and wide distribution, and has very good development prospects and value. Nowadays, energy is increasingly scarce and the greenhouse effect is becoming more severe, so there is a demand for low-carbon energy. Therefore, clean energy such as wind energy and ocean energy will be the future direction of energy development. However, except for the relatively mature use of wind energy, power generation devices using clean energy are still in the development stage, and the use of ocean energy is still in the early stage, with no versatile and mature devices, and its power output is lower than that of other energies. Most importantly, the manufacturing costs, installation costs and maintenance costs of conventional ocean energy power generation devices are much higher than the costs of other energy generation, which is the biggest obstacle to realizing commercial operation and popularization of ocean energy power generation devices.

[0003] At present, wind power generation equipment that uses offshore wind power to generate electricity can produce a maximum output of 5MW per unit. It is a system in which a tower is fixed to the bottom of the sea and a wind turbine is fixed to the top of the tower and placed on the sea surface to collect wind energy and generate electricity. The diameter of the lowest end of the tower is 6.242m, the diameter of the highest end is 4.170m, the average diameter of the tower is 5.206m, and the height of the entire tower is 96m. In other words, to achieve a single output of 5MW, a tower nearly 100m high needs to be installed, and the maximum diameter needs to exceed 6m to accommodate a generator of this power. Such a tower weighs 439 tons, and the construction and installation costs are very high. The high cost does not translate into real economic value. Even if you want to use it on a large scale, the high cost makes it prohibitive.

[0004] In the case of wind power generation, even if the diameter of the entire impeller is 230m, the generated power is only 12MW, but the corresponding tower height needs to be 195m (the lowest point of the blade is 30m above the ground, and the radius of the impeller is 165m). However, when generating power using tidal energy, the blade diameter is 70m, theoretically the generated power can reach 30MW, and the height of the pile needs to be only 40m (the blade is 5m above the ground, and the radius of the impeller is 35m). Therefore, compared with offshore wind power generation, the tower height of tidal power generation is significantly lower and the cost is also reduced, so the power generation efficiency of tidal power generation is higher than that of offshore wind power generation.

[0005] Conventional tidal power generation devices usually use two fixing means, one is a floating fixing means that floats in the sea via a floating bed and is fixed to the seabed or shore with steel cables, and the other is a seabed fixing means that is directly fixed to the seabed via fixed piles. Since floating fixing means mainly generate power using ocean wave energy, the amount of generated power is smaller than that of deep tidal energy, and the floating generator is small, so that it has little economic value and is gradually abandoned in practical applications. The second seabed fixing means is the fixing means that actually puts conventional tidal power generation devices into practical use.

[0006] Currently, the maximum single-unit output of a power generation module actually used in a conventional tidal power generation device is 2MW. To date, there have been no successful introductions in the world with a single-unit output exceeding 2MW. Tidal power generation devices are limited by the size of the single-unit power generation module, so most are very expensive and cannot be operated commercially, and therefore cannot generate commercial value. Specifically, conventional tidal power generation devices are directly fixed to the seabed via fixed piles, similar to offshore wind power generation devices. Because the impact force of seawater is large, the fixed piles need to have a sufficiently large pile diameter to withstand the bending moment, and the larger the diameter of the fixed piles, the higher the cost of the piles. Fixed piles with a certain diameter have an upper limit to their bearing capacity, so only horizontal axis hydroelectric generators within a certain scale can be mounted on them. Fixed piles cannot be made unlimitedly large in terms of cost and technology, so they cannot break through the single-unit output of horizontal axis hydroelectric generators. Summary of the Invention

[0007] SUMMARY OF THE PRESENT EMBODIMENT The present invention provides a large-scale tidal power generation device and assembly platform thereof to overcome at least one deficiency in the prior art.

[0008] According to a first aspect, the present invention provides an assembly platform for a large-scale tidal power generation device on which at least one horizontal axis hydroelectric generator is mounted. The assembly platform for the large-scale tidal power generation device includes at least four fixed piles, at least two force-receiving and blocking parts, at least two force-receiving and supporting parts, and a supporting frame. The at least four fixed piles are integrally connected by the supporting frame to surround and form an installation space, and the at least one horizontal axis hydroelectric generator is mounted in the installation space, one end of each fixed pile is driven to be fixed to the seabed and the other end extends above the water surface, and the at least four fixed piles are arranged in two rows on the left and right along the water flow direction, and at least two fixed piles in each row are arranged sequentially along the water flow direction. The at least two force-receiving and blocking parts are fixed to the corresponding fixed piles or supporting frames, respectively, and are located on both the left and right sides along the water flow direction of the horizontal axis hydroelectric generator below the water surface. One end of at least two force-receiving support parts is attached to both the left and right sides of the horizontal axis hydroelectric generator along the water flow direction, and the other end is abutted against the corresponding force-receiving blocking parts, thereby resisting the impact force of the water flow on the horizontal axis hydroelectric generator.

[0009] In one embodiment according to the first aspect of the present invention, the assembly platform further includes at least two sets of shock absorbing devices, each set of shock absorbing devices being installed between the force-receiving supporting part and the force-receiving blocking part.

[0010] In one embodiment according to the first aspect of the present invention, the assembly platform has at least two guide grooves, which are installed on corresponding fixed piles or support frames and are located on both the left and right sides along the water flow direction of the horizontal axis hydroelectric generator, one end of the guide groove is located above the water surface and the other end passes below the water surface, and at least two force-receiving prevention parts are respectively fixed to the other ends of the corresponding guide grooves.

[0011] In one embodiment according to the first aspect of the present invention, the assembly platform further includes at least two sets of barrier guide grooves for mounting or fixing the barriers, the at least two sets of barrier guide grooves being respectively installed on both the upstream and downstream sides of the horizontal axis hydroelectric generator, and each set of barrier guide grooves extends from above the water surface to below the water surface.

[0012] In one embodiment according to the first aspect of the present invention, the assembly platform further includes at least one access pipe, one end of which is located above the water surface and the other end of which is connected to the horizontal axis hydro-generator or one of the force-receiving parts or the force-receiving blocking parts, so that workers can reach below the water surface through the at least one access pipe for maintenance or fixing work.

[0013] In one embodiment according to the first aspect of the invention, the assembly platform further comprises at least one blower and a ventilation tube, the ventilation tube being fixably or removably positioned within the access pipe or along the outside of the access pipe, the ventilation tube passing from above the water surface to below the water surface, thereby providing ventilation in the underwater working area.

[0014] In one embodiment according to the first aspect of the present invention, the assembly platform further includes at least one water pump and at least one drain pipe, the drain pipe being fixably or removably positioned within the access pipe or along the outside of the access pipe, the drain pipe passing from above the water surface to below the water surface, and the water pump pumping up accumulated water within the below water working area and discharging it above the water surface via the drain pipe.

[0015] In one embodiment according to the first aspect of the present invention, the assembly platform further includes at least two fixed assembly cases, each of which has a hollow structure and is installed corresponding to a force-receiving blocking part, so that an operator can work inside the fixed assembly case.

[0016] In one embodiment according to the first aspect of the present invention, each fixing assembly case includes a sealing device and a fixing assembly, the fixing assembly including at least one fixing bolt or at least one jack, and the sealing device is provided corresponding to the fixing assembly.

[0017] In one embodiment according to the first aspect of the present invention, a side plate is provided on one side of each row of fixed piles facing the horizontal axis hydroelectric generator.

[0018] In one embodiment according to the first aspect of the invention, a concrete protector is provided at each pile of the assembly platform in the area above the lowest water mark.

[0019] In one embodiment according to the first aspect of the invention, a large tidal power plant includes a barrier as provided by the fourth aspect of the invention.

[0020] According to a second aspect, the present invention provides a large-scale tidal power generating device, comprising an assembly platform according to any embodiment of the first aspect, at least one horizontal axis hydroelectric generator, and at least one hanging support column. The at least one horizontal axis hydroelectric generator is removably mounted on the assembly platform. The at least one hanging support column is a closed hollow structure, one end of the hanging support column is located above the water surface, and the other end of the hanging support column communicates with the horizontal axis hydroelectric generator or the force-receiving blocking part or the force-receiving supporting part, so that workers can reach below the water surface by the hanging support column for maintenance or fixing work.

[0021] In one embodiment according to the second aspect of the invention, the large tidal power generation device further comprises at least one connection part, which is connected laterally or longitudinally to one end of the hanging support column located above the water surface and to the assembly platform.

[0022] In one embodiment according to the second aspect of the present invention, the assembly platform includes at least two fixed assembly cases, each fixed assembly case has a hollow structure and is installed corresponding to a force-receiving blocking part, the number of hanging support pillars is at least two, and the other ends of the at least two hanging support pillars are respectively connected to the corresponding fixed assembly cases, so that the worker can reach the inside of the fixed assembly case by the hanging support pillars.

[0023] In one embodiment according to the second aspect of the present invention, the number of the suspension support columns is three, the other ends of two of the suspension support columns are respectively connected to the force-receiving parts or force-receiving support parts located on both sides of the horizontal axis hydroelectric generator, the other end of the remaining suspension support column is connected to the horizontal axis hydroelectric generator, and the ends of the three suspension support columns located above the water surface are connected to each other.

[0024] In one embodiment according to the second aspect of the invention, a large tidal power device includes a barrier as provided by the fourth aspect of the invention.

[0025] According to a third aspect, the present invention further provides a large tidal power generating device, the device comprising: At least two assembly platforms, each including at least four fixed piles, the at least four fixed piles being connected together by a support frame to surround an installation space, one end of each fixed pile being driven into the seabed to be fixed thereto, and the other end extending above the water surface, the at least four fixed piles being sequentially arranged in two rows along the water flow direction, and at least two fixed piles in each row being arranged along the water flow direction; and at least three horizontal axis hydro-electric generators, at least one of which is removably mounted within the mounting space of each assembly platform; Here, the at least two assembly platforms are arranged left and right along the water flow direction, and the distance between the two assembly platforms is consistent with the diameter of the impeller of the horizontal axis hydroelectric generator, so that at least one further horizontal axis hydroelectric generator can be mounted between the two assembly platforms.

[0026] In one embodiment according to the third aspect of the present invention, each assembly platform includes at least two force-receiving blocking parts and at least two force-receiving supporting parts, the at least two force-receiving blocking parts are fixed to corresponding fixed piles, and located on both the left and right sides along the water flow direction of the horizontal-axis hydroelectric generator under the water surface. One end of the at least two force-receiving supporting parts is respectively attached to both the left and right sides along the water flow direction of the horizontal-axis hydroelectric generator, and the other end is respectively abutted against the corresponding force-receiving blocking parts, to resist the impact force of the water flow on the horizontal-axis hydroelectric generator.

[0027] In one embodiment according to the third aspect of the present invention, the assembly platform further comprises at least two sets of shock absorbing devices, each set of shock absorbing devices being installed between the force-receiving supporting part and the force-receiving blocking part.

[0028] In one embodiment according to the third aspect of the present invention, the assembly platform has at least two guide grooves, which are installed on corresponding fixed piles or support frames and are located on both the left and right sides along the water flow direction of the horizontal axis hydroelectric generator, one end of the guide groove is located above the water surface and the other end passes below the water surface, and at least two force-receiving prevention parts are respectively fixed to the other ends of the corresponding guide grooves.

[0029] In one embodiment according to the third aspect of the present invention, each assembly platform further includes at least two sets of barrier guide grooves for mounting or fixing barriers, the at least two sets of barrier guide grooves being respectively installed on both the upstream and downstream sides of the horizontal axis hydroelectric generator, and each set of barrier guide grooves extends from above the water surface to below the water surface.

[0030] In one embodiment according to the third aspect of the present invention, each assembly platform includes at least one access pipe, one end of which is located above the water surface and the other end of which is in communication with the horizontal axis hydro-generator or one of the force-receiving parts or the force-receiving blocking parts, so that workers can reach below the water surface through the at least one access pipe for maintenance or fixing work.

[0031] In one embodiment according to the third aspect of the invention, each assembly platform includes at least one blower and a ventilation pipe that is fixably or removably positioned within the access pipe or along the outside of the access pipe, the ventilation pipe passing from above the water surface to below the water surface, thereby providing ventilation in the underwater working area.

[0032] In one embodiment according to the third aspect of the invention, each assembly platform includes at least one water pump and at least one drain pipe, the drain pipe being fixably or removably positioned within the access pipe or along the outside of the access pipe, the drain pipe running from above the water surface to below the water surface, and the water pump pumping up accumulated water in the working area below the water surface and discharging it above the water surface via the drain pipe.

[0033] In one embodiment according to the third aspect of the present invention, each assembly platform includes at least two fixed assembly cases, each fixed assembly case having a hollow structure and correspondingly installed with a force-receiving blocking part, so that an operator can work inside the fixed assembly case.

[0034] In one embodiment according to the third aspect of the present invention, each fixing assembly case includes a sealing device and a fixing assembly, the fixing assembly including at least one fixing bolt or at least one jack, and the sealing device is provided corresponding to the fixing assembly.

[0035] In one embodiment according to the third aspect of the present invention, a side plate is provided on one side of each row of fixed piles facing the horizontal axis hydroelectric generator.

[0036] In one embodiment according to the third aspect of the invention, a concrete protector is provided at each pile of each assembly platform in the area above the lowest water mark.

[0037] In one embodiment according to the third aspect of the present invention, the tidal power generation device further includes at least one hanging support, the hanging support is a closed hollow structure, one end of the hanging support is located above the water surface, and the other end of the hanging support communicates with the horizontal axis hydroelectric generator or the force-receiving blocking part or the force-receiving supporting part, so that workers can reach below the water surface by the hanging support for maintenance or fixing work.

[0038] In one embodiment according to the third aspect of the invention, the large tidal power generation device further comprises at least one connection part, which is connected laterally or longitudinally to one end of the hanging support column located above the water surface and to the assembly platform.

[0039] In one embodiment according to the third aspect of the present invention, each assembly platform includes at least two fixed assembly cases, each fixed assembly case has a hollow structure and is installed corresponding to a force-receiving blocking part, the number of hanging support pillars is at least two, and the other ends of the at least two hanging support pillars are respectively connected to the corresponding fixed assembly cases, so that the worker can reach the inside of the fixed assembly case by the hanging support pillars.

[0040] In one embodiment according to the third aspect of the present invention, the number of the suspension support columns is three, the other ends of two of the suspension support columns are respectively connected to the force-receiving parts or force-receiving support parts located on both sides of the horizontal axis hydroelectric generator, the other end of the remaining suspension support column is connected to the horizontal axis hydroelectric generator, and the ends of the three suspension support columns located above the water surface are connected to each other.

[0041] In one embodiment according to the third aspect of the invention, a large tidal power device includes a barrier as provided by the fourth aspect of the invention.

[0042] According to a fourth aspect, the present invention provides a tidal power generation device including at least two barriers, each installed on either the upstream or downstream side of a horizontal axis hydroelectric generator, and each having a width along the water flow direction of 8 centimeters or more.

[0043] In one embodiment according to the fourth aspect of the invention, a tidal power generating device comprises an assembly platform according to any embodiment of the first or second aspect of the invention.

[0044] In one embodiment according to the fourth aspect of the invention, a tidal power device comprises a suspension mast according to any embodiment of the second aspect of the invention.

[0045] In one embodiment according to the fourth aspect of the invention, the tidal power plant uses a tidal power plant as described in any embodiment of the third aspect of the invention.

[0046] According to a fifth aspect, the present invention further provides a large tidal power generating device, the device comprising: An assembly platform that is fixed to the seabed; a horizontal axis hydroelectric generator removably mounted on the assembly platform; at least two force-receiving parts mounted on an assembly platform and positioned above the water surface; At least two force-receiving support parts, one end of which is attached to both the left and right sides of the horizontal axis hydroelectric generator along the water flow direction, and the other end of which is abutted against two force-receiving prevention parts on the left and right sides of the assembly platform, respectively, to resist the impact force of the water flow on the horizontal axis hydroelectric generator; at least one access pipe, one end of which communicates with the interior of the horizontal axis hydro-electric generator and the other end of which is located above the water surface, or one end of which passes through an underwater working area of ​​the assembly platform and the other end of which passes above the water surface, so that workers can work in the underwater working area; At least one blower; and at least one ventilation pipe which is fixably or detachably attached to the inside or outside of the access pipe, has one end passing above the water surface and the other end passing below the water surface, and which starts a blower to ventilate the working area below the water surface when an operator needs to work in the working area below the water surface to ensure the safety of the operator.

[0047] In one embodiment according to the fifth aspect of the present invention, the apparatus further includes at least one water pump and at least one drain pipe, the drain pipe being fixably or removably attached to the inside or outside of the access pipe, one end of the drain pipe passing above the water surface and the other end passing into a working area below the water surface, and if water leaks from within the working area below the water surface, the water pump pumps up the accumulated water inside and discharges it above the water surface through the drain pipe, ensuring the safety of the apparatus or workers.

[0048] In one embodiment according to the fifth aspect of the invention, a large tidal power device comprises a barrier according to any embodiment of the fourth aspect of the invention.

[0049] In short, instead of mounting the horizontal axis hydroelectric generator on a frame as in the prior art, the present invention connects four fixed piles and a support frame together to form a mounting space, and then fixes and mounts the horizontal axis hydroelectric generator in the mounting space, thus greatly reducing the amount of steel used and the manufacturing and mounting costs. In addition, in the present invention, the force-receiving support parts and force-receiving blocking parts located on both sides of the horizontal axis hydroelectric generator can be evenly transmitted to both sides and thereby distributed to the entire assembly platform, so that the entire assembly platform can carry a horizontal axis hydroelectric generator with a larger single-unit output, greatly reducing the power generation cost of the tidal power generation device. In particular, the horizontal axis hydroelectric generator of the present invention has a "fixed point" in the water, so that the problem of the prior art that the horizontal axis hydroelectric generator is easily damaged by the resonance phenomenon caused by the shaking under the huge thrust of the water current is avoided. By using the large-scale tidal power generation device and its assembly platform provided by this embodiment, the tidal power generation device can be made truly large-scale, the cost of tidal power generation can be kept lower than that of thermal power generation, and the commercialization and application of tidal power generation can truly be realized.

[0050] In order to make the above contents and other objects, features and advantages of the present invention clearer, the present invention will be described in more detail below with reference to preferred embodiments and drawings. [Brief description of the drawings]

[0051] [Figure 1] FIG. 1 is a top view of a large-scale tidal power generation device provided by a first embodiment of the present invention. [Diagram 2] FIG. 1 is a side view of a large-scale tidal power generation device provided by a first embodiment of the present invention. [Diagram 3] 4A to 4C are schematic cross-sectional views of different embodiments of the force-receiving supporting part and the force-receiving preventing part provided by the present invention. [Figure 4] FIG. 1 is a schematic diagram of the installation of a large-scale tidal power generation device provided by Example 1 of the present invention. [Diagram 5] FIG. 11 is a local top view of a large-scale tidal power generation device provided by Example 2 of the present invention. [Figure 6] FIG. 11 is a local side view of a large-scale tidal power generation device provided by Example 2 of the present invention. [Figure 7] FIG. 11 is a top view of an internal module of a large-scale tidal power generation device provided by Example 2 of the present invention. [Figure 8] FIG. 11 is a schematic diagram of the installation of a large-scale tidal power generation device provided by Example 2 of the present invention. [Figure 9] FIG. 11 is a schematic diagram of the installation of a large-scale tidal power generation device provided by Example 3 of the present invention. [Figure 10] FIG. 11 is a schematic diagram of the installation of a large-scale tidal power generation device provided by Example 4 of the present invention. [Figure 11] FIG. 11 is a schematic diagram of the installation of a large-scale tidal power generation device provided by Example 5 of the present invention. [Figure 12] FIG. 11 is a top view of a large-scale tidal power generation device provided by Example 6 of the present invention. [Figure 13] FIG. 11 is a top view of a large-scale tidal power generation device provided by Example 7 of the present invention. [Figure 14] FIG. 1 is a schematic diagram of a barrier provided by Example 8 of the present invention. [Figure 15] FIG. 13 is a schematic diagram of a large-scale tidal power generation device provided by Example 9 of the present invention. [Figure 16] FIG. 11 is a schematic diagram of the installation of a large-scale tidal power generation device provided by Example 9 of the present invention. [Figure 17] FIG. 13 is a schematic diagram of a large-scale tidal power generation device provided by Example 10 of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0052] FIG. 1 is a top view of a large-scale tidal power generation device provided by Example 1 of the present invention. FIG. 2 is a side view of a large-scale tidal power generation device provided by Example 1 of the present invention. FIG. 3 is a cross-sectional schematic diagram of a force-receiving support part and a force-receiving blocking part provided by Example 1 of the present invention. FIG. 4 is a schematic diagram of the installation of a large-scale tidal power generation device provided by Example 1 of the present invention. In FIG. 2, the right wheel is an enlarged schematic diagram of the sign of the left wheel. As shown in FIGS. 1 to 4, in Example 1, the large-scale tidal power generation device includes an assembly platform 1 and at least one horizontal axis hydroelectric generator 2, and the at least one horizontal axis hydroelectric generator 2 is installed on the assembly platform 1.

[0053] In this embodiment, the assembly platform 1 includes at least four fixed piles 11, at least two force-receiving blocking parts 12, at least two force-receiving supporting parts 13, and a support frame 14. One end of each fixed pile 11 is driven into the seabed F for fixing, and the other end extends above the water surface P. The at least four fixed piles 11 are connected together by the support frame 14, and the four fixed piles 11 together with the support frame 14 surround and form an installation space 15. The four fixed piles 11 are arranged in two rows, one on the left and one on the right, along the water flow direction D, and at least two fixed piles 11 in each row are arranged sequentially along the water flow direction D. Specifically, the at least four fixed piles 11 are divided into two sets (i.e., two rows), and each set includes at least two fixed piles 11. A line connecting the cross sections of the at least two fixed piles 11 in each set through the center point is essentially parallel to the water flow direction D (a slight deviation is acceptable). Since each set of fixed piles 11 is arranged in a row parallel to the water flow direction D, the impact force received by the fixed piles 11 located downstream is significantly reduced by the blocking force of the fixed piles 11 located upstream. As shown in FIG. 1, when the tide is rising, the water flow direction is D, and when the tide is falling, the water flow direction is D'. "Left" and "right" in this specification mean both the left and right sides of the water flow direction. Specifically, when viewed from the direction shown in FIG. 1, that is, when looking down from above the water surface, the two rows of fixed piles 11 are located on the left and right sides, respectively.

[0054] In this embodiment, the support frame 14 includes a plurality of rigid rods, each rigid rod is connected to two fixed piles 11. The force received by the assembly platform 1 is resolved by transmitting between the fixed piles 11 through the support frame 14. By installing the support frame 14, at least four fixed piles 11 are integrally formed together, and the force received by one fixed pile 11 is effectively transmitted to the other fixed piles 11, so that the force received by the assembly platform 1 is uniformly distributed. In this embodiment, the underwater part and the abovewater part of the fixed piles 11 are also provided with the support frame 14 for connection. When the sea area where the tidal power generation device is located is deep, the fixed piles 11 are long, and the support frame 14 can be installed in multiple places under the water surface, in this way, the connection between the fixed piles 11 is more robust, and the force distribution can be effectively achieved. However, the present invention is not limited thereto, and the connection positions and the number of connections of the support frame 14 can be set according to specific requirements.

[0055] In practical applications, each fixed pile 11 is not necessarily installed perfectly vertically to the seabed F. In this embodiment, the fixed piles 11 located on the water receiving side or the water falling side (the lowest position and the highest position in FIG. 1 ) can be inserted at an incline into the seabed F. The resistance capability of each fixed pile 11 inserted at an incline to the impact force of the water flow is about 1.5 times that of the fixed piles 11 installed vertically, that is, the fixed piles 11 installed at an incline can receive and disperse a larger impact force of the water flow.

[0056] In this embodiment, the assembly platform 1 of the large-scale tidal power generation device includes a total of eight fixed piles 11, four of which are located on the left side of the horizontal axis hydroelectric generator 2, and the other four are located on the right side of the horizontal axis hydroelectric generator 2. The four fixed piles 11 located on the left or right side are sequentially arranged along the water flow direction D. The present invention does not limit the specific number of fixed piles 11. In other embodiments, the number of fixed piles 11 may be four, six, or twelve. By installing more fixed piles 11, the impact force of the water flow on the horizontal axis hydroelectric generator 2 can be transmitted to more fixed piles 11, so as to effectively distribute the impact force of the water flow, and the tidal power generation device can receive and resist the thrust of a larger water flow, thereby improving the ability of the assembly platform 1 to mount a single horizontal axis hydroelectric generator 2 of a larger scale. In other words, the assembly platform 1 provided by the embodiment of the present invention can support a horizontal axis hydroelectric generator 2 with a larger output, improving the upper limit of the output of a single turbine impeller and a single generator, thereby realizing the commercial popularization and application of the tidal power generation device. Furthermore, as the number of fixed piles 11 increases, the diameter of each fixed pile 11 can be correspondingly reduced, thereby reducing the cross-section of the fixed piles 11 that block the water flow, improving the utilization rate of the horizontal axis hydroelectric generator 2 against the water flow, and consequently improving the power generation efficiency of the horizontal axis hydroelectric generator 2.

[0057] Specifically, taking the conventional offshore wind power invention device described in the background art of this application as an example, the maximum single-unit output mounted on the device is 5 MW, but in order to ensure the mounting, a fixed pile with a maximum diameter of more than 6 m is required. In this embodiment, at least four fixed piles 11 and a support frame 14 are integrated to distribute the thrust of the received water flow, and when the diameter of each fixed pile is 1.3 m, a horizontal axis hydroelectric generator with a single-unit output of 5 MW can be mounted, thus greatly reducing the diameter of the fixed pile. The difficulty and cost of manufacturing each fixed pile are also reduced. In addition, the process of fixing and installing a single fixed pile to the seabed is very complicated. During the installation period, first, a pile driving platform formed by multiple auxiliary piles is installed around the single fixed pile, and then after the single fixed pile is installed and fixed, people or ships are dispatched to remove the pile driving platform, and further underwater work is required, thus causing the installation cost of the fixed pile to be very high. However, in this embodiment, at least four fixed piles connected to each other are used to form a natural pile driving platform. Since it is not necessary to install a pile driving platform formed by auxiliary piles, the installation cost of the fixed piles is significantly reduced. Therefore, the total manufacturing and installation cost of four fixed piles with a diameter of 1.3 m is less than the manufacturing and installation cost of one fixed pile with a diameter of 6 m.

[0058] When the diameter of each fixed pile in this embodiment is 3m, a horizontal axis hydroelectric generator with a single unit output of 20MW can be mounted, breaking the upper limit of the conventional single unit output and truly increasing the single unit output. The maximum single unit output of a conventional tidal power generation device is only 2MW, and in order to achieve a power generation amount of 20MW, a maximum of 10 horizontal axis hydroelectric generators need to be operated, and at least 10 assembly platforms need to be installed for installation. However, the large-scale tidal power generation device of the first embodiment of the present invention only needs to install one horizontal axis hydroelectric generator and one assembly platform to achieve a power generation amount of 20MW, which results in a significant reduction in costs and truly makes it possible to operate the tidal power generation device commercially.

[0059] The cost of the tidal power generation device is composed of two parts, one is the manufacturing and installation cost of the generator, the other is the manufacturing and installation cost of the assembly platform. For example, the manufacturing and installation cost of one 2.5MW horizontal axis hydroelectric generator is 20 million yuan, the manufacturing and installation cost of two 2.5MW horizontal axis hydroelectric generators is 40 million yuan, but the manufacturing and installation cost of one 5MW horizontal axis hydroelectric generator is only 206 million yuan. That is, regardless of the difference in the manufacturing and installation cost of the assembly platform, in terms of the cost of the horizontal axis hydroelectric generator alone, the operation of a higher power horizontal axis hydroelectric generator will greatly reduce the cost per unit power, and needless to say, the manufacturing and installation cost of the assembly platform of this embodiment is also much lower than that of the assembly platform of the prior art.

[0060] In this embodiment, at least two force-receiving and blocking parts 12 are fixed to the fixed piles 11 or the support frame 14, and the force-receiving and blocking parts 12 are located on both the left and right sides of the horizontal axis hydroelectric generator 2 along the water flow direction D below the water surface P. Specifically, the assembly platform of the tidal power generation device in this embodiment has eight fixed piles, and the two force-receiving and blocking parts 12 are located on the two fixed piles 11 in the center of the left side and the two fixed piles 11 in the center of the right side shown in FIG. 1, respectively, and are further located on one side of the fixed piles 11 toward the horizontal axis hydroelectric generator 2. If the tidal power generation device has only four fixed piles, the force-receiving and blocking parts 12 can be attached to the support frame connecting the two fixed piles. That is, the force-receiving and blocking parts 12 can be directly or indirectly attached to the fixed piles 11.

[0061] In this embodiment, one end of at least two force receiving support parts 13 is attached to both the left and right sides along the water flow direction D of the horizontal axis hydroelectric generator 2, and the other end is abutted against the corresponding force receiving blocking parts 12. In this embodiment, if the force receiving support part 13 on the left side of Fig. 1 is taken as an example, one end of the force receiving support part 13 is the right end, and the other end of the force receiving support part 13 is the left end. If the force receiving support part 13 on the right side of Fig. 1 is taken as an example, one end of the force receiving support part 13 is the left and right ends, and the other end of the force receiving support part 13 is the right end.

[0062] The force-receiving support part 13 and the force-receiving blocking part 12 of this embodiment are combined to resist the impact force of the water flow on the horizontal axis hydroelectric generator 2. Specifically, as shown in Fig. 1, the water flows from bottom to top along the water flow direction D toward the horizontal axis hydroelectric generator 2, and one end of the two force-receiving support parts 13 is fixed to both sides of the horizontal axis hydroelectric generator 2, respectively, so that the thrust of the water flow on the horizontal axis hydroelectric generator 2 can be directly transmitted to both sides and disassembled. The thrust can be uniformly distributed to each fixed pile 11 by passing through the force-receiving support part 13, the force-receiving blocking part 12 and the support frame 14 in sequence, and all the fixed piles 11 receive the force together. At the same time, the other ends of the two force-receiving support parts 13 are respectively "blocked" by the force-receiving blocking parts 12, and the force-receiving blocking parts 12 are fixed to the support frame 14 or the fixed piles 11, so that the force-receiving blocking parts 12 generate a "resistance force" from top to bottom on the force-receiving support parts 13 when viewed from the direction of Figure 1, thereby canceling out and balancing the effects of different forces, and further ensuring the underwater stability of the horizontal axis hydroelectric generator 2, and as a result, increasing the upper limit of the thrust of the water flow that the horizontal axis hydroelectric generator 2 can withstand.

[0063] In the prior art, a horizontal axis hydroelectric generator is fixed to the seabed by a single mounting pile, which must resist all of the impact force of the water flow corresponding to the horizontal axis hydroelectric generator. The bending moment and shear force generated in this process are very large, so an upper limit is set for the single output of the horizontal axis hydroelectric generator to prevent the mounting pile from being overloaded. However, the assembly platform of this embodiment has at least two force receiving points at the "waist" of the entire power generation device, which effectively distributes the impact force of the water flow on the horizontal axis hydroelectric generator in the lateral direction. The tidal power generation device generates power using the kinetic energy of the water flow, and the greater the thrust of the water flow, the greater the amount of power generation, so the tidal power generation device of this embodiment can be equipped with a horizontal axis hydroelectric generator with a higher output.

[0064] In this embodiment, the cross section of the force-receiving blocking part 12 is concave. However, the present invention is not limited thereto. In other embodiments, the cross section of the force-receiving blocking part 12 may be convex or conical. The present invention does not limit the specific shapes of the force-receiving blocking part 12 and the force-receiving supporting part 13, and the force-receiving blocking part 12 only needs to form an engagement relationship with one end of the force-receiving supporting part 13. FIG. 3 shows some possible cross-sectional shapes of the force-receiving blocking part 12 and the force-receiving supporting part 13 simply. However, the actual shapes of the force-receiving blocking part 12 and the force-receiving supporting part 13 of the present invention are not limited thereto. In practical applications, the force-receiving supporting part 13 preferably has an appearance of a circular arc or other streamlined shape. This installation minimizes the resistance force that the force-receiving supporting part 13 experiences in water.

[0065] In this embodiment, the force-receiving blocking part 12 and the force-receiving supporting part 13 can be fixed by a jack or a fixing bolt. However, the present invention is not limited thereto. In another embodiment, the other ends of the force-receiving blocking part 12 and the force-receiving supporting part 13 can achieve a tight fit. Specifically, when the force-receiving supporting part 13 is attached to the force-receiving blocking part 12, the force-receiving supporting part 13 and the force-receiving blocking part 12 can be firmly engaged without the need for an additional jack or a fixing bolt, and the fixing between the two will not loosen. In the case of installation, since the installer does not need to enter the water for the installation work, no additional access pipe is required. In this case, the manufacturing precision of the force-receiving blocking part 12 and the force-receiving supporting part 13 is high, and the cross section of the force-receiving supporting part 13 is set to a specific external shape, so that it can be firmly engaged with the force-receiving blocking part 12 (the shape shown at the rightmost part of FIG. 3). Because the impact force of the water flow is very large, if the precision of one of the force-receiving supporting parts and the force-receiving blocking parts located on the left and right sides does not match, the horizontal axis hydroelectric generator is likely to tilt. The advantage is that during the installation process, the connection between the force receiving support part and the force receiving blocking part only needs to rely on the engagement relationship, and no further fixing and adjustment is required. When the force receiving blocking part and the force receiving support part are fixed by the engagement relationship, a jack can also be installed below the force receiving support part, and when it is necessary to lift the horizontal axis hydroelectric generator from above down from underwater, it is only necessary to raise the jack, lift the force receiving support part, and release the engagement relationship between the force receiving support part and the force receiving blocking part, so that the horizontal axis hydroelectric generator can be lifted from underwater.

[0066] In this embodiment, the number of the force-receiving blocking parts 12 and the force-receiving supporting parts 13 is two. However, the present invention is not limited thereto. In another embodiment, the number of the force-receiving blocking parts and the force-receiving supporting parts may be four, and there are two force-receiving blocking parts and two force-receiving supporting parts on each of the left and right sides of the horizontal axis hydroelectric generator along the water flow direction. In another embodiment, the number of the force-receiving supporting parts 13 may be two, and the number of the force-receiving blocking parts 12 may be four, and the force-receiving blocking parts 12 are fixed to the other end of the force-receiving supporting part in a set of two. In this embodiment, the length direction of the force-receiving supporting part 13 is perpendicular to the water flow direction D and parallel to the horizontal plane P. When installed in this manner, the amount of steel used in the force-receiving supporting part 13 is reduced, and at the same time, the bending moment generated by the force-receiving supporting part 13 is reduced. The present invention is not limited thereto. In another embodiment, the length direction of the force-receiving supporting part is perpendicular to the water flow direction but not parallel to the horizontal plane, that is, the force-receiving supporting part can be installed at an incline. The greater the inclination of the force receiving support part 13, the longer the length of the force receiving support part 13 will be, the more steel will be used, and the greater the bending moment that will be generated. Therefore, the connecting end between the force receiving support part 13 and the force receiving prevention part 12 needs to be installed below the water surface.

[0067] In this embodiment, one end of the two force-receiving support parts 13 is directly attached to the generator part of the horizontal axis hydroelectric generator 2 and located on both the left and right sides. However, the present invention is not limited thereto. In another embodiment, the horizontal axis hydroelectric generator can have a hanging support column, and one end of the two force-receiving support parts 13 can be attached to the hanging support column and still located on both sides of the horizontal axis hydroelectric generator 2. That is, one end of the force-receiving support parts is directly or indirectly attached to the horizontal axis hydroelectric generator 2, so that the force received by the horizontal axis hydroelectric generator 2 is resolved to both sides. Preferably, the two force-receiving support parts 13 are located on both sides of the horizontal axis hydroelectric generator 2, and the closer they are to the horizontal axis hydroelectric generator, the better. The farther they are from the horizontal axis hydroelectric generator, the weaker the effect of force resolution and transmission will be, and at the same time, the larger the bending moment generated by the hanging support column will be.

[0068] In the actual installation process, the horizontal axis hydroelectric generator 2 and the force-receiving support part 13 are welded and fixed on land, and then assembled to form an inner module. The model of the fixed piles 11, the support frame 14 and the force-receiving blocking part 12 are also welded and fixed to each other on land, and then transported to the target water area to drive at least four fixed piles 11 (including but not limited to drilling holes in the seabed, driving the piles into the rock mass, and pouring concrete into the piles to form reinforced concrete piles), and complete the installation of the assembly platform 1. Then, the inner module is hung from top to bottom in the installation space 15 of the assembly platform 1 on the water surface, and then the fixing of the force-receiving support part 13 and the force-receiving blocking part 12 is completed, that is, the installation of the entire tidal power generation device is completed. In this embodiment, all the manufacturing and installation operations of the tidal power generation device and its assembly platform can be completed on the water surface, eliminating underwater work, reducing the difficulty of construction, improving the safety of construction personnel, and greatly reducing labor costs.

[0069] The method of fixing each fixed pile 11 to the seabed F in this embodiment may be driven by the driving method disclosed in another Chinese patent application (publication number CN105401564) of the present inventor, or other conventional driving methods may be used, and will not be described here. The present invention is not limited thereto. It should be noted that only the driving method of the fixed piles in this embodiment is consistent with the driving method disclosed in the Chinese patent application No. CN10540156, but the structure and installation method of the entire tidal power generation device are qualitatively different from the structure and installation method disclosed in the Chinese patent application No. CN10540156.

[0070] First, the horizontal axis hydroelectric generator in the present inventor's Chinese patent application No. CN10540156 is first installed on the inner frame, and then the inner frame is inserted into the outer frame. The installation of the inner frame and the outer frame increases the amount of steel used and significantly improves the cost. After the inventor puts into practical use the tidal power generation device already invented by the inventor, the inventor finds that the thrust generated by the water flow is huge and unimaginable, and the maximum thrust can reach 2000-3000 tons. Therefore, just by improving the weight of the inner frame, the friction caused by its own gravity may offset the thrust of the water flow of the hydroelectric generator, thus causing a sharp increase in the amount of steel used and the cost. This embodiment completely abandons the use of the frame, and the entire assembly platform only needs to use a reinforcing cage in the process of pouring concrete to form the fixed pile, and other parts do not need any steel except for the force-bearing support parts, the force-bearing blocking parts and the support frame which are made of steel. The amount of steel used in the entire assembly platform is geometrically reduced, and the manufacturing cost is also significantly reduced.

[0071] The inventor, as can be seen from the comparison of practical applications, has implemented the mounting method and structure already invented by the inventor, and when the horizontal axis hydroelectric generator has a single output of 200KW, an impeller diameter of 5.4m, and an impeller cross section of 22.9m2, the hydroelectric generator receives a water current thrust of 23 tons, and in this case, the inner frame needs to reach more than 230 tons to ensure the safe operation of the hydroelectric generator. However, the weight of the entire assembly platform of the tidal power generation device of this embodiment only requires 125 tons (when the buoyancy generated by the hollow force-bearing parts and the hollow generator cabin is removed, the actual gravity in the water is only 25 tons), and can smoothly operate a horizontal axis hydroelectric generator with a single output of 1.5MW, whose impeller diameter is 15m, whose impeller cross section is 177m2, and the water current thrust received by the hydroelectric generator is 177 tons. If the mounting method and structure already invented by the present inventor is used, a frame of up to 1800 tons is required to mount a 1.5MW horizontal axis hydroelectric generator, and a frame of this weight is completely impossible to achieve both from the technical and cost standpoints. Therefore, only the frame limits the improvement of the unit scale of the conventional horizontal axis hydroelectric generator.

[0072] Next, the horizontal axis thrust generator in the Chinese patent application No. CN10540156 is rotatably fixed at the top and bottom of the inner frame by the central rotating shaft. Under the huge thrust of the water current, the horizontal axis hydroelectric generator is easy to vibrate during operation, and the larger the generator size, the more violent the vibration. The violent vibration causes the elements in the horizontal axis hydroelectric generator to resonate, resulting in damage. Therefore, after the tidal power generation device already invented by the present inventor is put into practical use, only the 200KW or 300KW horizontal axis hydroelectric generator can be safely operated by the mounting method in the Chinese patent application No. CN10540156, and when the single unit output reaches 1MW or more, the horizontal axis hydroelectric generator is easily damaged, and as a result, the single unit output of the horizontal axis hydroelectric generator cannot be improved. However, in the tidal power generation device provided by this embodiment, at least two "restraint points" are provided at or near the waist of the horizontal axis hydroelectric generator, the horizontal axis hydroelectric generator is directly and firmly fixed to the force-receiving support part, the force-receiving support part is also firmly fixed to the force-receiving blocking part, and the force-receiving blocking part and the support frame are also firmly fixed to the fixed pile. In other words, the horizontal axis hydroelectric generator and the assembly platform are firmly fixed, and the element does not vibrate beyond a safe range in the water, and the resonance problem is avoided. Therefore, the tidal power generation device provided by this embodiment can smoothly operate a horizontal axis hydroelectric generator with a higher output.

[0073] In this embodiment, the assembly platform 1 has at least two guide grooves 121, which are located on both the left and right sides along the water flow direction D of the horizontal axis hydroelectric generator 2, and the guide grooves 121 run from above the water surface to below the water surface, and at least two force-receiving and blocking parts 12 are respectively fixed to the bottom ends of the corresponding guide grooves 121. In this embodiment, the guide grooves 121 can be installed on the corresponding fixed piles 11 or support frames 14, and are located on one side of the fixed piles 11 or support frames 14 toward the horizontal axis hydroelectric generator 2. One end of the guide groove 121 is located on the water surface P, and the other end may be at the same height as the center point of the horizontal axis hydroelectric generator 2 or at a position lower than the center point. The function of the guide groove 121 is to easily install or fix the force-receiving and supporting parts 13. When installing the force-receiving and supporting parts 13, one end of the force-receiving and supporting parts 13 can slide from the water surface to underwater along the guide groove 121, and then be fixed with the force-receiving and blocking parts 12 located at the bottom end of the guide groove 121.

[0074] In this embodiment, a barrier needs to be installed upstream or downstream of the horizontal axis hydroelectric generator 2 in order to effectively reduce damage caused by marine foreign objects (e.g., marine debris or floating ice) to the horizontal axis hydroelectric generator 2. Because there is a lot of marine debris, after the barrier is used for a certain period of time, the debris on its surface needs to be regularly cleaned so that the water flow can smoothly flow into the horizontal axis hydroelectric generator 2 and not be blocked by the debris, and the power generation efficiency can be ensured. In addition, the water flow is fast and some of the debris is sharp, so that even if the barrier is made of steel wire, there is a problem of breakage, so the barrier needs to be frequently repaired and replaced. Workers in charge of cleaning, installation and maintenance of conventional barriers need to perform underwater work, which is difficult to operate and has low efficiency, and maintenance and cleaning are also dangerous because whirlpools are easily generated by the collision of water currents around the tidal power generator.

[0075] In this embodiment, the assembly platform 1 further includes at least two sets of barrier guide grooves 16 for mounting or fixing the barriers, and the two sets of barrier guide grooves 16 are respectively installed on the upstream and downstream sides of the horizontal axis hydroelectric generator 2 (when the water flow direction is shown by D in FIG. 1, the lower side in FIG. 1 is the upstream side, and the upper side in FIG. 1 is the downstream side), and each set of barrier guide grooves 16 runs from above the water surface to below the water surface. In this embodiment, each set of barrier guide grooves 16 includes two barrier guide grooves, and one set of barrier guide grooves 16 is located on one side upstream of the two upstream fixed piles 11 in FIG. 1 (the two lowest fixed piles in FIG. 1), and the other set of barrier guide grooves 16 is located on one side downstream of the two downstream fixed piles 11 in FIG. 1 (the two highest fixed piles). In practical application, the two left and right sides of the barrier are inserted into the barrier guide groove 16 from top to bottom along a pair of barrier guide grooves 16, and then slide to the bottom end by its own gravitational action, thus completing the installation and fixing of the barrier. The installation of the barrier guide groove 16 makes it easy to install the barrier, does not require subsea installation work, and can be completed by directly performing the operation on the sea surface. In particular, when the barrier needs to be cleaned or replaced, the barrier can be pulled out from bottom to top along the barrier guide groove 16, and the operator only needs to operate on the water surface. Therefore, the installation of the barrier guide groove 16 makes it easy to clean and replace the barrier. The installation of the barrier guide groove 16 reduces the costs of installation, maintenance and replacement of the barrier. This embodiment does not limit the specific type of the barrier.

[0076] In this embodiment, the assembly platform 1 includes at least one access pipe 17, and the at least one access pipe 17 passes from above the water surface to below the water surface, so that workers can reach below the water surface through the access pipe 17 for maintenance or fixing work. One end of the access pipe 17 is located above the water surface P, and the other end is located below the water surface P and communicates with the horizontal axis hydroelectric generator 2, the force-receiving support part 13, or the force-receiving blocking part 12. In this embodiment, the number of access pipes 17 is two, and the two access pipes 17 are respectively installed along the support frame 14. In one embodiment, the access pipes 17 are respectively communicated with the force-receiving support parts 13, and workers can reach inside the force-receiving support parts 13 through the access pipes 17 and fix and install the force-receiving support parts 13 and the force-receiving blocking parts 12. However, the present invention is not limited thereto. In another embodiment, the access pipe 17 may be installed in one of the fixed piles 11 on both sides of the horizontal axis hydroelectric generator 2, and communicate with the force-receiving support part 13 or the force-receiving blocking part 12, respectively. In another embodiment, the access pipe 17 may be installed in the support frame 14.

[0077] In this embodiment, the two force-receiving support parts 13 may be hollow structures, and workers can reach the inside of the horizontal-axis hydroelectric generator 2 through the access pipe 17 and the force-receiving support parts 13 to perform maintenance on the inside of the horizontal-axis hydroelectric generator 2 (for example, changing engine oil, replacing gears, replacing sealing parts, etc.). However, the present invention is not limited thereto. In another embodiment, the assembly platform may have only one access pipe, and the access pipe is also installed in the fixed pile, and workers can reach the force-receiving support part on one side through the access pipe, fix and install the force-receiving support part and the force-receiving blocking part on one side, and also reach the inside of the horizontal-axis hydroelectric generator through the force-receiving support part to perform maintenance on the horizontal-axis hydroelectric generator, and further pass through the force-receiving support part on one side, the horizontal-axis hydroelectric generator, and the force-receiving support part on the other side in sequence, and fix and install the force-receiving support part and the force-receiving blocking part on the other side. In another embodiment, the assembly platform has only one access pipe, which can be installed in the fixed pile and communicate with the force-receiving blocking part, and the installer can reach the force-receiving blocking part through the access pipe and fix and install the force-receiving support part and the force-receiving blocking part. In another embodiment, the assembly platform can install a dedicated access pipe to communicate between the water surface and the inside of the horizontal axis hydro-generator.

[0078] In this embodiment, the assembly platform 1 further includes at least one blower 181 and a ventilation pipe 182, the ventilation pipe 182 is fixably or detachably arranged in the access pipe 17 or along the outside of the access pipe 17, and the ventilation pipe 182 passes from above the water surface P to below the water surface P, so that the underwater work area can be ventilated. Conventional tidal power generation devices do not consider the situation of underwater installation or maintenance. The inventor has previously considered underwater maintenance, but ignores the problem that high temperature due to long-term use of the internal machinery leads to the generation of toxic and harmful gases and excessive carbon dioxide concentration. When underwater work needs to be done, the worker needs to be underwater for a long time and is prone to hypoxia or carbon dioxide poisoning. The blower 181 and the ventilation pipe 182 in this embodiment constitute a fresh air blowing system, which greatly ensures the life safety of the underwater maintenance or installation personnel. When the worker needs to enter the underwater work area to work, the blower can be started to ventilate the underwater work area. In a specific application, the fresh air blowing system has a more complicated structure, such as an independent blowing system and an exhaust system, which are not described here.

[0079] In this embodiment, the assembly platform 1 further includes at least one water pump 183 and at least one drain pipe 184, the drain pipe 184 is fixedly or detachably arranged in the access pipe 17 or along the outside of the access pipe, the drain pipe 184 passes from above the water surface P to below the water surface P, the water pump 183 sucks up the accumulated water in the working area under the water surface and discharges it above the water surface through the drain pipe 184. Since most of the entire tidal power generation device is located underwater, it is difficult to ensure that the sealing ring does not leak water, because the sealing ring is easily loosened after a long period of use. If no protective measures are taken, the maintenance personnel or installation personnel may be exposed to a life-threatening danger when they enter the underwater working area from the access pipe 17. The installation of the water pump 183 and the drain pipe 184 effectively ensures the safety of the workers. In this embodiment, when the workers need to perform underwater work, they start the water pump 183 to operate for a certain period of time and observe whether the accumulated water is discharged from the drain pipe 184. The worker can enter the access pipe 17 until the accumulated water is cleared from the drain pipe 184. When the worker performs underwater work, the water pump 183 continues to operate until the worker finishes the work and returns to the water surface. However, the present invention is not limited to the form of the water pump. In another embodiment, the water pump 183 operates periodically to suck up the accumulated water inside and discharge it to the water surface through the drain pipe 184, thereby preventing the accumulated water from damaging the elements and ensuring the safety of the worker.

[0080] In this embodiment, the ventilation pipe 182, the drain pipe 184 and the access pipe 17 can all be installed along the support frame 14 or the fixed pile 11, and these pipes can all be connected to the inside of the force-receiving support part 13. Also, the ventilation pipe 182 and the drain pipe 184 can be arranged along the hollow force-receiving support part 13 until they reach the inside of the horizontal axis hydroelectric generator 2. However, the present invention is not limited thereto. In another embodiment, the ventilation pipe 182, the drain pipe 184 and the access pipe 17 dedicated to pass from above the water surface to below the water surface can be installed in the fixed pile 11.

[0081] In this embodiment, the assembly platform 1 further includes at least two fixed assembly cases 18, each of which has a hollow structure and is installed corresponding to the force-receiving blocking part 12, so that an operator can work inside the fixed assembly case 18. The fixed assembly case 18 is attached to the force-receiving supporting part 13 at one end thereof abutting against the force-receiving blocking part 12, so as to fixedly connect the force-receiving blocking part 12 and the force-receiving supporting part 13. In this embodiment, each fixed assembly case 18 communicates with an access pipe 17. That is, the access pipe 17 in this embodiment passes directly through the inside of the fixed assembly case 18, instead of directly communicating with the force-receiving supporting part 13.

[0082] In this embodiment, each fixing assembly case 18 includes a sealing device 185 and a fixing assembly 186, the fixing assembly 186 includes at least one fixing bolt or at least one jack, and the sealing device 185 is provided corresponding to the fixing assembly 186. In the installation process of the tidal power generation device of this embodiment, the horizontal axis hydroelectric generator 2, at least two force-receiving support parts 13 and at least two fixing assembly cases 18 are welded and connected on land to form an inner module. After the fixing piles 11 are fixed to the seabed F, the inner module is suspended from top to bottom in the underwater installation space 15, and the fixing assembly case 18 can slide along the guide groove 121 to the bottom end of the guide groove 121. Then, the worker enters the inside of the fixed assembly case 18 through the access pipe 17 and adjusts the fixing assembly 186 (for example, by screwing in the fixing bolt or pushing up the jack) to firmly engage the fixed assembly case 18 and the force-receiving blocking part 12, thereby realizing the fixing of the force-receiving blocking part 12 and the force-receiving supporting part 13. At this point, the fixing of the entire inner module to the assembly platform 1 is completed, and the installation of the entire tidal power generation device is completed. However, the present invention is not limited thereto. This embodiment does not need to have the fixed assembly case 18, and the force-receiving supporting part 13 and the force-receiving blocking part 12 can be fixed by directly installing the sealed valve 185 and the fixing assembly 186.

[0083] When the water flow rushes toward the horizontal axis hydroelectric generator 2 along the water flow direction D, the force-receiving support part 13 receives a huge impact force from bottom to top as viewed from the direction of FIG. 1, so that the associated fixing assembly case 18 is pressed to abut against the upper side of the force-receiving blocking part 12 as viewed from the direction of FIG. 1. In the actual manufacturing process, it is difficult to ensure that the size of the fixing assembly case 18 is completely consistent with the size of the positioning groove of the force-receiving blocking part 12. Due to the existence of tolerance, there is a gap between the fixing assembly case 18 and the force-receiving blocking part 12. In order to prevent the horizontal axis hydroelectric generator 2 from shaking, the installer enters the fixing assembly case 18 through the access pipe 17 and begins to adjust the fixing assembly 186 (for example, screw in the fixing bolt or push up the jack), so that the top end of the fixing assembly 186 abuts against the inner wall of the positioning groove of the force-receiving blocking part 12. In this case, the fixing assembly case 18 is firmly engaged in the force-receiving blocking part 12, so as to prevent the horizontal axis hydroelectric generator 2 from shaking. Whether the tide is rising or falling, the horizontal axis hydroelectric generator 2 is firmly positioned and does not vibrate beyond the allowable range. During this process, the blower 181 operates all the time to supply fresh air through the ventilation pipe 182. The water pump 183 also operates all the time to drain possible stagnant water through the drain pipe 184, thereby ensuring the safety of the workers. In another embodiment, when the fixed assembly case 18 is not installed, the access pipe 17 passes directly through the inside of the force-receiving support part 13 or the force-receiving blocking part 12, thereby completing the fixed connection between the force-receiving support part 13 and the force-receiving blocking part 12.

[0084] In this embodiment, a side plate 19 is installed on one side of the fixed piles 11 in each row facing the horizontal axis hydroelectric generator 2. The side plate 19 can form a passage for achieving a rectifying effect, i.e., can collect water flow and effectively guide the horizontal axis hydroelectric generator 2, thereby improving power generation efficiency. In another embodiment, side plates are also provided on all four sides, top, bottom, left, and right, as viewed from the direction of Fig. 2, thereby forming passages for collecting water and guiding the water to flow toward the horizontal axis hydroelectric generator 2.

[0085] As shown in FIG. 4, in this embodiment, a concrete protection device 111 is provided in the area above the lowest tide line L of each fixed pile 11 of the assembly platform 1, which protects each fixed pile 11 from strong corrosion in the intertidal zone, thereby extending the service life of the fixed pile 11, and also extending the service life of the assembly platform 1, and improving the frequency and cost of maintenance. Since water plays a role in isolating oxygen in the air, the part of the fixed pile 11 below the water surface is less likely to corrode, and the part of the fixed pile 11 above the water surface is most likely to corrode. If the concrete protection device is not installed, the corrosion of the part of the fixed pile 11 above the water surface may cause the transmission of force between the fixed piles 11 to be uneven, which may cause the entire assembly platform 1 to become unbalanced or to collapse. By installing the concrete protection device 111, the service life of the entire assembly platform 1 may reach 50 years. With the rise and fall of the tide, the height of the water surface P also changes, so the lowest end of the concrete protection device 111 is preferably installed at the lowest tide line L. In practical application, the bottom end of the concrete protection device 111 is lower than the lowest water line L. In a specific application, a protection sleeve is provided on the fixed pile 11 in an area above the lowest water line L, and then concrete is poured into the protection sleeve, thus forming the concrete protection device 111.

[0086] FIG. 5 is a local top view of the large-scale tidal power generation device provided by the second embodiment of the present invention. FIG. 6 is a local side view of the large-scale tidal power generation device provided by the second embodiment of the present invention. FIG. 7 is a top view of a single internal module of the large-scale tidal power generation device provided by the second embodiment of the present invention. FIG. 8 is a schematic diagram of the installation of the large-scale tidal power generation device provided by the second embodiment of the present invention. Please refer to FIG. 5 to FIG. 8 together. The assembly platform 1, horizontal axis hydroelectric generator 2, fixed pile 11, concrete protection device 111, force-receiving blocking part 12, force-receiving support part 13, support frame 14, installation space 15, barrier guide groove 16, fixed assembly case 18, blower 181, ventilation pipe 182, water pump 183, drainage pipe 184, side plate 19, etc. of the second embodiment are basically the same in structure and function as the corresponding elements of the first embodiment, and therefore use the same symbols. Hereinafter, only the differences will be described.

[0087] In the second embodiment, the large-scale tidal power generation device includes an assembly platform 1, at least one horizontal axis hydroelectric generator 2, and at least one hanging support column 31. At least one horizontal axis hydroelectric generator 2 is removably attached to the assembly platform 1. FIG. 5 shows only the end module of the large-scale tidal power generation device, and therefore only shows the assembly platform 1 and the horizontal axis hydroelectric generator 2. In practical application, a plurality of assembly platforms 1 and a plurality of horizontal axis hydroelectric generators 2 are arranged like an array, thereby improving the power output of the entire power generation device. Specifically, another horizontal axis hydroelectric generator 2 is attached to the right side of the tidal power generation device shown in FIG. 5 and FIG. 6, so that an additional force-receiving and preventing part 12 is installed on the two fixed piles 11 in the middle of the right side, or on the support frame 14 connecting the fixed piles 11, and this force-receiving and preventing part 12 is located on the outside. Correspondingly, the fixed pile 11 or the support frame 14 located on the right side has an additional guide groove 121.

[0088] In this embodiment, the tidal power generation device further includes at least one hanging support column 31, one end of which is located above the water surface P, and the other end of which is connected to the horizontal axis hydroelectric generator 2 or the force receiving prevention part 12 or the force receiving support part 13, so that the worker can reach below the water surface P through the hanging support column 31 for maintenance or fixing work. Similar to the first embodiment, the assembly platform of this embodiment also includes at least two fixed assembly cases 18, each of which is hollow and installed corresponding to the force receiving prevention part 12. Specifically, the tidal power generation device in this embodiment includes three hanging support columns 31. One end of the hanging support column 31 located in the center is located above the water surface P, and the other end of which is connected to the horizontal axis hydroelectric generator 2. The other two suspension support columns 31 are located on both sides of the horizontal axis hydroelectric generator 2 along the water flow direction D, and the other ends of the two suspension support columns 31 are respectively connected to the fixed assembly cases 18 located on both sides of the horizontal axis hydroelectric generator 2. The suspension support columns 31 on both sides can be fixed in the guide grooves 121. That is, in this embodiment, the function of the guide grooves 121 is to guide the fixed assembly case 18 to slide, and to facilitate the installation and fixing of the fixed assembly case 18. The guide grooves 121 can play the role of fixing and guiding the suspension support columns 31. In another embodiment, when there is no fixed assembly case 18, the other ends of the suspension support columns 31 located on both sides can be directly connected to the force-receiving support parts 13.

[0089] The suspension support column 31 is a sealed hollow structure, and a ladder can be installed inside the suspension support column 31. Workers enter the inside of the horizontal axis hydroelectric generator 2 through the ladder inside the central suspension support column 31 to carry out work (for example, maintenance work such as replacing sealing rings and engine oil, or pipe arrangement work). When the horizontal axis hydroelectric generator 2 breaks down, there is no need to lift the horizontal axis hydroelectric generator 2 out of the water, and workers can directly enter the inside of the horizontal axis hydroelectric generator 2 to carry out maintenance. Workers can reach inside the fixing assembly case 18 through the suspension support columns 31 on both sides, and complete the installation and fixing of the fixing assembly 18 and the force receiving prevention component 12.

[0090] In most of the conventional tidal power generation devices, a single mounting pile is installed under the horizontal axis hydroelectric generator, but such a mounting method has two obvious defects. One is that the support of the aforementioned single mounting pile bears all the thrust of the water flow of the horizontal axis hydroelectric generator, resulting in excessive bending moment and shear force, so that a higher-power horizontal axis hydroelectric generator cannot be mounted, and the power generation cost remains high. The other is that when the horizontal axis hydroelectric generator needs to be maintained, workers need to remove the connection between the horizontal axis hydroelectric generator and the mounting pile underwater, and then lift the horizontal axis hydroelectric generator from the sea surface, thus causing a big safety problem during maintenance. In addition, in order to ensure that the horizontal axis hydroelectric generator operates normally, the mounting pile and the horizontal axis hydroelectric generator are rigidly fixed, which means that it is very difficult to release the connection between them, let alone operate it underwater, and the difficulty of maintenance is very high. Therefore, most of the conventional tidal power generation devices are not maintained at all, and when the horizontal axis hydroelectric generator is damaged (for example, water enters the inside of the horizontal axis hydroelectric generator due to the loosening of the sealing ring after a long period of use, and the engine oil of the horizontal axis hydroelectric generator needs to be replaced), the whole power generation device is directly discarded. This is also one of the main reasons why the useful life of conventional tidal power generation devices is short and the cost is high, making it difficult to realize commercialization of tidal power generation devices.

[0091] However, when the horizontal axis hydroelectric generator 2 of this embodiment needs maintenance, the maintenance personnel can directly enter the inside of the horizontal axis hydroelectric generator 2 through the suspension support column 31 to perform underwater work. In practical application, the service life of the assembly platform of this embodiment can be as long as 50 years, but the service life of the horizontal axis hydroelectric generator is 20 years. When the horizontal axis hydroelectric generator 2 reaches its service life, the horizontal axis hydroelectric generator 2 can be lifted from the bottom to the top of the water surface by simply releasing the fixed connection between the horizontal axis hydroelectric generator 2 and the assembly platform 1, and a new horizontal axis hydroelectric generator 2 can be replaced and installed. The horizontal axis hydroelectric generator 2 of this embodiment is detachably installed by a hanging type, and the cost and difficulty of maintenance and replacement of the horizontal axis hydroelectric generator 2 are lower than those of a horizontal axis hydroelectric generator directly attached to the seabed.

[0092] Since the horizontal axis hydroelectric generator 2 of this embodiment is fixed in water by the hanging support column 31 and the force-receiving support parts 13 on both sides, the horizontal axis hydroelectric generator 2 will not sway under the huge thrust of the water current, and the generated vibration is within a safe range. Therefore, the tidal power generation device provided by this embodiment can operate a larger-scale horizontal axis hydroelectric generator, which means that the single-unit output of the horizontal axis hydroelectric generator is larger. The maximum single-unit power that can be loaded of the conventional tidal power generation device is 2MW, while the tidal power generation device of this embodiment can be mounted and run with a horizontal axis hydroelectric generator with a single-unit output of 5MW, 10MW and 20MW. This will greatly promote the development of the marine energy power generation industry, promote technological progress, and bring fundamental changes to the industry.

[0093] At the same time, even if the conventional tidal power generation device uses a single-unit power of 2MW, it cannot continue to generate power because it does not solve problems such as maintenance. Although some tidal power generation devices take into account maintenance issues, the high maintenance costs make the generation cost of tidal power much higher than other energy generation, and as a result, the commercial value of conventional tidal power generation devices has always been very low. The hanging support column of this embodiment not only plays a supporting role, but also allows workers to enter the inside of the horizontal axis hydroelectric generator for maintenance, greatly reducing maintenance costs.

[0094] In addition, in the patents and embodiments already filed by the present invention, it is necessary to create a complete rectangular frame to fix and mount the horizontal axis hydroelectric generator, but in this embodiment, the horizontal axis hydroelectric generator can be fixed in the water with only two force-bearing support parts, which greatly reduces the amount of steel used and further reduces the cost of the power generating device. In addition, the installation of the frame inevitably blocks the water flow, forms a water flow cross section, and reduces the utilization rate of the water flow of the horizontal axis hydroelectric generator, but the tidal power generating device of this embodiment does not require a frame, which completely solves this problem.

[0095] In this embodiment, the large-scale tidal power generation device further includes at least one connection part 4, which is connected horizontally or vertically to one end of the hanging support column 31 located above the water surface and the assembly platform 1. When the connection part is connected horizontally, the connection part 4 fixedly connects one end of the three hanging support columns 31 located above the water surface. When the horizontal axis hydroelectric generator 2 and the assembly platform 1 are separated, it is only necessary to release the connection relationship between the connection part 4 and the assembly platform 1.

[0096] In this embodiment, the closed hollow hanging support column 31 plays the role of the access pipe 17. In this embodiment, the three hanging support columns 31, the two fixed assembly cases 18, the two force-receiving support parts 13 and the horizontal axis hydroelectric generator 2 jointly constitute the inner module. When the fixed assembly case 18 is damaged and maintenance is required, the fixed relationship between the inner module and the assembly platform 1 can be released, and then the inner module can be lifted from the sea surface from bottom to top to perform the maintenance or replacement operation at any position of the inner module. However, the present invention is not limited thereto. In other embodiments, the access pipes 17 on both sides can be directly installed in the fixed piles 11, in which case there is a risk that the fixed piles of the assembly platform will be discarded when maintenance is required, which is not economical.

[0097] As in the first embodiment, a blower 181, a ventilation pipe 182, a water pump 183 and a drain pipe 184 are installed correspondingly on each hanging support column 31 (i.e., access pipe 17) of the large-scale tidal power generation device of this embodiment, ensuring the safety of underwater workers. The structures and mechanisms of the blower 181, the ventilation pipe 182, the water pump 183 and the drain pipe 184 are the same as those in the first embodiment, so they will not be described here.

[0098] As shown in FIG. 9 , in Example 3, the number of hanging support columns 31 may be one, the hanging support column 31 located in the center is a sealed hollow structure, and the hanging support columns 31 located on both sides may not be hollow, or the hanging support columns 31 on both sides are not required, and the worker enters the inside of the horizontal axis hydroelectric generator 2 through the central hanging support column 31, and then passes through the inside of the hollow force-receiving support part 13 to reach the other end of the force-receiving support part 13, respectively, and performs fixing between the force-receiving support part 13 and the force-receiving blocking part 12, or fixing between the fixing assembly case 18 and the force-receiving blocking part 12. As shown in FIG. 10, in the fourth embodiment, the number of the hanging support columns 31 can be two, the hanging support columns 31 located on both sides are sealed hollow structures, the hanging support column 31 located in the middle can be solid, or the hanging support columns 31 on both sides are not required, and the worker can reach the inside of the horizontal axis hydroelectric generator 2 through the hanging support column 31 and the hollow force-receiving support component 13 on either side. As shown in FIG. 11, in the fifth embodiment, the number of the hanging support columns 31 can be two, the hanging support column 31 located on the left or right side, the hanging support column 31 in the middle and the hanging support column 31 on the other side can be solid, or the hanging support column 31 in the middle or the other side is not required, and the worker can enter the force-receiving support component 13 through the hanging support column 31 on the leftmost side, then reach the inside of the horizontal axis hydroelectric generator 2 through the hollow force-receiving support component 13, and also reach the rightmost side through the horizontal axis hydroelectric generator 2 and another force-receiving support component 13. The present invention is not limited thereto. In other embodiments, the force-receiving support part 13 may not be hollow, and the worker does not need to pass through its interior, but can reach the desired location through the three hollow hanging support columns 31 respectively. In those embodiments, the blower 181, the ventilation pipe 182, the water pump 183 and the drain pipe 184 can all be installed correspondingly.

[0099] Figure 12 is a top view of a large-scale tidal power generation device provided by Example 6 of the present invention, and in Figure 12, the upper dotted circle is an enlarged view of the lower dotted circle mark. The assembly platform 1, horizontal axis hydroelectric generator 2, fixed pile 11, concrete protection device (not shown), force-receiving prevention part 12, force-receiving support part 13, support frame 14, mounting space 15, blower (not shown), ventilation pipe 182, water pump (not shown), drain pipe 184, side plate 19, etc. of Example 6 are basically the same in structure and function as the corresponding elements of Example 1, and therefore use the same symbols. Hereinafter, only the differences will be described.

[0100] In this embodiment, the assembly platform 1 does not include the fixed assembly case in the first embodiment, but still has a sealing device and a fixing assembly (e.g., a fixing bolt or a jack). One end of the force-receiving support part 13 is directly attached and fixed to the force-receiving prevention part 12 by the fixing assembly, and the sealing device seals the connection. In this embodiment, four access pipes 17 are installed along the outside of the fixed pile 11, one end of the access pipes 17 is located above the water surface, and the other end communicates with the force-receiving prevention part 12. Workers enter the force-receiving prevention part 12 through the access pipes 17 to adjust the fixing assembly, and thus fix the force-receiving support part 13 and the force-receiving prevention part 12. In another embodiment, the assembly platform 1 can have an access pipe 17 located in the center of FIG. 12, which is installed on the support frame 14, and the access pipes can reach the underwater work area and fix the fixing assemblies in the four positions, and the cost of this installation method is the lowest. The blower, ventilation pipe 182, water pump and drain pipe 184 can all be installed correspondingly to ensure the safety of the workers.

[0101] 13 is a top view of a large-scale tidal power generating device provided by the seventh embodiment of the present invention. The assembly platform 1, horizontal axis hydroelectric generator 2, fixed pile 11, concrete protection device 111, force-receiving blocking part 12, force-receiving supporting part 13, support frame 14, mounting space 15, barrier guide groove 16, access pipe 17, blower, ventilation pipe, water pump, drainage pipe, side plate 19, etc. of the seventh embodiment are basically the same in structure and function as the corresponding elements of the first embodiment, and therefore the same symbols are used. Hereinafter, only the differences will be described.

[0102] In the seventh embodiment, the tidal power generating device does not include a fixed assembly case. The assembly platform further includes at least two sets of shock absorbing devices 21, and each set of shock absorbing devices 21 is installed between the force receiving support part 13 and the force receiving blocking part 12. Each set of shock absorbing devices 21 includes two shock absorbing parts fixed on both the upstream and downstream sides of one end of the force receiving support part 13 that is away from the horizontal axis hydroelectric generator 2. Each shock absorbing device is abutted against the force receiving blocking part 12. The shock absorbing devices 21 can use a special polyethylene polymer material, a rubber material, a spring, etc. The installation of the shock absorbing devices 21 can effectively reduce the resonance that may occur in the horizontal axis hydroelectric generator 2.

[0103] FIG. 14 is a schematic diagram of the barrier provided by the eighth embodiment of the present invention, and in FIG. 14, the dotted circle on the right side is a top view of the dotted circle on the left side. In this embodiment, the assembly platform includes at least two barriers 3, which are located on both the upstream and downstream sides of the horizontal axis hydroelectric generator 2, respectively, and the width W of each barrier 3 along the water flow direction is 8 centimeters. The conventional tidal power generation device ignores the damage of the impeller of the hydroelectric generator caused by marine foreign objects (marine debris, floating ice in the sea, etc.). In view of this, the present inventor uses the method of installing a barrier, thus reducing the possibility of marine foreign objects being caught in the impeller. However, as can be seen from more than a year of practice, when the barrier formed by weaving steel wires continues to be affected by the water flow, the joints of the steel wires rub against each other, the thickness of the steel wires at the joints gradually becomes thinner, and finally, the steel wires break, and the barrier action of blocking marine foreign objects is lost. Furthermore, the broken steel wires are screwed into the impeller of the hydroelectric generator, destroying the blades and resulting in the damage of the entire horizontal axis hydroelectric generator. Thus, not only cannot the impeller be protected, but also the maintenance cost increases. Therefore, if the width of the barrier 3 along the water flow direction is set to 8 centimeters or more, the barrier will not be damaged again no matter how much the water flow hits it. Due to the particularity of this field, the cost increases significantly every time the tidal horizontal axis hydroelectric generator is maintained or parts are replaced, which hinders the commercial operation of the tidal power generation device. Those skilled in the art have previously fallen into misunderstanding and always consider the problem theoretically, but ignore the economic applicability after the power generation device is actually used. This parameter of 8 centimeters is what the inventor has finally determined through experience and lessons accumulated, and continuous practice and accumulation that the barrier has a sufficiently long service life.

[0104] In this embodiment, the height of each barrier mesh along the water depth direction is still the diameter of the steel wire, that is, about 8 mm. In practical application, the width W of the barrier 3 along the water flow direction can be 30 centimeters, which can effectively prevent ice collision in the waters near northern Canada and ensure that the steel wire does not break. In this embodiment, the length of the barrier perpendicular to the water flow direction and parallel to the horizontal plane is determined by the size of the assembly platform to be correspondingly installed, and the present application does not limit it, and it can be, for example, 15m*20m. The height of the barrier along the water depth direction is determined by the stress conditions of the water flow environment at the implementation site, and the present application does not limit it. The mesh of the barrier can be square or rhombus, and the present application does not limit the size of the mesh distance, and the mesh can be 30cm*30cm. In addition, the present application does not limit the support frame of the barrier and its material.

[0105] FIG. 15 is a schematic diagram of a large-scale tidal power generation device provided by Example 9 of the present invention. FIG. 16 is a schematic diagram of the installation of a large-scale tidal power generation device provided by Example 9 of the present invention. As shown in FIG. 15 and FIG. 16, the large-scale tidal power generation device includes at least two assembly platforms 1 and at least two horizontal axis hydroelectric generators 2. The assembly platform 1 and the horizontal axis hydroelectric generator 2 in Example 9 are the same as the structures of the assembly platform and the horizontal axis hydroelectric generator described in Example 2, and the same structures are indicated here by the same symbols. The tidal power generation device in Example 9 also has all other parts described in Example 1 or Example 2, and will not be described here.

[0106] In the ninth embodiment, the large-scale tidal power generation device includes at least four fixed piles 11, which are connected together by a support frame 14 to surround and form an installation space 15, one end of each fixed pile 11 is driven into the seabed F to be fixed thereto, and the other end extends above the water surface, and the at least four fixed piles 11 are arranged in two rows along the water flow direction, and at least two fixed piles 11 in each row are arranged sequentially along the water flow direction. At least one horizontal axis hydroelectric generator 2 is installed in the installation space 15 of each assembly platform 1. The at least two assembly platforms 1 are arranged left and right along the water flow direction, and the interval G between the two assembly platforms 1 is consistent with the diameter of the impeller of the horizontal axis hydroelectric generator 2, so that at least one further horizontal axis hydroelectric generator 2 can be installed between the two assembly platforms 1. The direction of the interval G is parallel to the horizontal plane and perpendicular to the water flow direction. Specifically, the length of the interval G is greater than the diameter of the impeller of the horizontal axis hydroelectric generator 2, so that the horizontal axis hydroelectric generator 2 can be mounted between two assembly platforms 1. On each assembly platform 1, a horizontal axis hydroelectric generator 2 is mounted in a direction parallel to the horizontal plane, and one or more horizontal axis hydroelectric generators 2 are mounted along the water depth direction (i.e., the direction perpendicular to the horizontal plane). Similarly, a horizontal axis hydroelectric generator 2 is mounted between two assembly platforms in a direction parallel to the horizontal plane, and one or more horizontal axis hydroelectric generators 2 are mounted along the water depth direction (i.e., the direction perpendicular to the horizontal plane).

[0107] For the tidal power generation device described in the patents already filed by the present inventor and the specific embodiments, first, the horizontal axis hydroelectric generator is attached to the inner frame to form an inner module, then the outer frame is driven to be fixed to the seabed to form an assembly platform, and then the inner module is suspended on the underwater outer frame, thus completing the installation of the tidal power generation device. In terms of manufacturing cost, the total manufacturing cost of the tidal power generation device includes the manufacturing cost of the assembly platform, the manufacturing cost of the outer frame and the inner frame, and the manufacturing cost of the horizontal axis hydroelectric generator. The tidal power generation device described in this embodiment and any of the above embodiments does not use a traditional frame, and the amount of steel required in the manufacturing process is greatly reduced, thereby greatly reducing the manufacturing cost.

[0108] Next, in terms of installation cost, the installation cost of the conventional tidal power generation device includes the installation cost of the assembly platform and the installation cost of the internal module. If the internal module includes a frame, the installation cost of the internal module includes the installation cost of the generator and the installation cost of the corresponding frame. If three hydroelectric generators are to be installed in a direction perpendicular to the water flow direction and parallel to the horizontal plane, the installation cost of three frames, the installation cost of three hydroelectric generators, and the installation cost of three assembly platforms are required. However, in the installation method of this embodiment, in addition to not needing to install a frame, one platform is reduced, that is, only two installation platforms are needed to install three hydroelectric generators, thus greatly reducing the installation cost of the tidal power generation device. If five hydroelectric generators need to be placed, only three assembly platforms are required.

[0109] In terms of the actual cost of a tidal power generation device, the cost of the assembly platform and the hydroelectric generator may each account for half of the cost, and in most cases the cost of the assembly platform is higher than the cost of the hydroelectric generator. The mounting method disclosed in this embodiment greatly reduces the "extension" cost of the tidal power generation device in the direction perpendicular to the water flow direction and parallel to the horizontal plane, realizing low-cost array arrangement and making the tidal power generation device truly large-scale.

[0110] In the actual installation process, if the installation distance of the fixed piles is too close, the rocks and soil on the seabed are likely to loosen, so it is necessary to fix another pile at a distance of 3 to 5 times the pile diameter. Thus, the utilization rate of the conventional tidal power generation device for the water flow is low, resulting in a waste of resources. For example, if the diameter of the fixed pile is 3 m, another fixed pile needs to be driven in if it is more than 9 m away. Otherwise, the adjacent assembly platform cannot be fixed firmly, which may cause the pile to collapse or distort during the operation process, and the entire device may need to be scrapped and installed again. The installation method of this embodiment completely avoids this problem in the prior art, reduces costs, and at the same time makes full use of tidal energy.

[0111] Fig. 17 is a schematic diagram of a large-scale tidal power generation device provided by Example 10 of the present invention. As shown in Fig. 17, in Example 10, at least two horizontal axis hydroelectric generators 2 are installed along the water depth direction in each assembly platform 1. The present invention is not limited thereto, and in practical applications, one or more horizontal axis hydroelectric generators can be installed in different installation spaces according to different water depths.

[0112] All the features of the embodiments described in this application can be freely combined and used according to the actual situation. For example, the barrier in the eighth embodiment can be applied to the tidal power generation devices in the first, second, third, fourth, fifth, sixth, seventh, eighth, nineth, and tenth embodiments, and the barrier in the eighth embodiment can also be applied to any conventional tidal power generation devices. The tidal power generation devices in the first, second, third, fourth, fifth, sixth, seventh, eighth, nineth, and tenth embodiments can also use barriers of other structures. The tidal power generation devices disclosed in the first, second, third, fourth, fifth, sixth, seventh, eighth, nineth, and tenth embodiments can be installed according to the method disclosed in the nineth embodiment. The large-scale tidal power generation devices disclosed in the first, second, third, fourth, fifth, sixth, seventh, eighth, nineth, and tenth embodiments can be arrayed according to other conventional arrangement methods. The installation method in the nineth embodiment can also be applied to other conventional tidal power generation devices of other structures. Each assembly platform and internal module in the 9th embodiment may be completely the same as or different from those in the 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th, 9th, and 10th embodiments. In the 1st to 9th embodiments, at least two horizontal axis hydroelectric generators can be mounted in the water depth direction as described in the 10th embodiment. The structure of the internal module of each assembly platform of the tidal power generation device in the 10th embodiment may be completely the same as those in the 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th, 9th, and 10th embodiments.

[0113] In short, instead of mounting the horizontal axis hydroelectric generator on a frame as in the prior art, the present invention connects four fixed piles and a support frame together to form a mounting space, and then fixes and mounts the horizontal axis hydroelectric generator in the mounting space, thus greatly reducing the amount of steel used and the manufacturing and mounting costs. In addition, in the present invention, the force-receiving support parts and force-receiving blocking parts located on both sides of the horizontal axis hydroelectric generator can be evenly transmitted to both sides and thereby distributed to the entire assembly platform, so that the entire assembly platform can carry a horizontal axis hydroelectric generator with a larger single-unit output, greatly reducing the power generation cost of the tidal power generation device. In particular, the horizontal axis hydroelectric generator of the present invention has a "fixed point" in the water, so that the problem of the prior art that the horizontal axis hydroelectric generator is easily damaged by the resonance phenomenon caused by the shaking under the huge thrust of the water current is avoided. By using the large-scale tidal power generation device and its assembly platform provided by the present application, tidal power generation devices can be made truly large-scale, the cost of tidal power generation can be kept lower than that of thermal power generation, and the commercialization and application of tidal power generation can truly be realized.

[0114] As described above, the present invention has been disclosed by a preferred embodiment, but the present invention is not limited thereto, and a person skilled in the art can make some changes and modifications without departing from the spirit and scope of the present invention, and therefore the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An assembly platform for a large tidal power generation device on which at least one horizontal axis hydroelectric generator is mounted, comprising: A support frame and at least four fixed piles connected together by a support frame to surround and form an installation space, the at least one horizontal axis hydroelectric generator being installed in the installation space, one end of each of the fixed piles being driven into the seabed so as to be fixed thereto, and the other end extending above the water surface, the at least four fixed piles being arranged in two rows, one on the left and one on the right, along the water flow direction, with at least two fixed piles in each row being arranged sequentially along the water flow direction; At least two force receiving and preventing parts are fixed to the corresponding fixed piles or the support frame, and are located on both the left and right sides of the horizontal axis hydroelectric generator below the water surface along the water flow direction; An assembly platform for a large-scale tidal power generation device, comprising at least two force-receiving support parts, one end of which is attached to each of the left and right sides of the horizontal axis hydroelectric generator along the water flow direction, and the other end of which is abutted against the corresponding force-receiving prevention parts, thereby resisting the impact force of the water flow against the horizontal axis hydroelectric generator.

2. The assembly platform for a large-scale tidal power generation device as described in claim 1, characterized in that the assembly platform further includes at least two sets of shock absorbing devices, each set of the shock absorbing devices being installed between the force-receiving support part and the force-receiving blocking part.

3. The assembly platform for the large-scale tidal power generation device described in claim 1, characterized in that the assembly platform further includes at least one access pipe, one end of which is located above the water surface and the other end of which is connected to the horizontal axis hydroelectric generator or one of the force-receiving parts or the force-receiving preventing parts, so that workers can reach below the water surface through the at least one access pipe for maintenance or fixing work.

4. The assembly platform for the large tidal power generation device as described in claim 3, characterized in that the assembly platform further includes at least one blower and a ventilation pipe, the ventilation pipe being fixably or removably arranged within the access pipe or along the outside of the access pipe, and the ventilation pipe being passed from above the water surface to below the water surface, thereby providing ventilation in the working area below the water surface.

5. The assembly platform for the large-scale tidal power generation device described in claim 3, characterized in that the assembly platform further includes at least one water pump and at least one drain pipe, the drain pipe being fixably or removably arranged within the access pipe or along the outside of the access pipe, the drain pipe passing from above the water surface to below the water surface, and the water pump pumping up accumulated water in the working area below the water surface and discharging it above the water surface through the drain pipe.

6. The assembly platform for a large-scale tidal power generation device as described in claim 1, characterized in that the assembly platform further includes at least two fixed assembly cases, each of which has a hollow structure and is installed corresponding to the force-receiving prevention part.

7. 2. The assembly platform for a large tidal power generation device according to claim 1, characterized in that a concrete protection device is provided in the area above the lowest tide line at each pile of the assembly platform.

8. A large-scale tidal power generation device, An assembly platform according to any one of claims 1 to 7; at least one horizontal axis hydroelectric generator removably mounted on said assembly platform; and at least one hanging support column having a closed hollow structure, one end of which is located above the water surface and the other end of which is connected to the horizontal axis hydroelectric generator or a force-receiving blocking part or a force-receiving supporting part, so that an operator can reach below the water surface by means of the hanging support column for maintenance or fixing work.

9. The large-scale tidal power generation device according to claim 8, characterized in that the assembly platform includes at least two fixed assembly cases, each of which has a hollow structure and is installed corresponding to the force-receiving prevention part, the number of the hanging support poles is at least two, and the other ends of the at least two hanging support poles are respectively connected to the corresponding fixed assembly cases.

10. The large-scale tidal power generation device according to claim 8, characterized in that the number of the suspension supports is three, the other ends of two of the suspension supports are connected to the force receiving parts or the force receiving support parts located on both sides of the horizontal axis hydroelectric generator, respectively, and the other end of the remaining suspension support is connected to the horizontal axis hydroelectric generator.

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