Large-scale tidal power generation device and its assembly platform

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 clean, non-polluting renewable energy source with abundant reserves and widespread distribution, offering excellent development potential and value. Energy shortages and the increasingly severe greenhouse effect necessitate a low-carbon energy strategy. Therefore, clean energy sources such as wind and ocean energy are the future direction of energy development. However, with the exception of relatively mature wind energy applications, clean energy power generation systems are still in the development stage. Ocean energy utilization remains in its infancy, with no universally applicable, mature systems available, and its power output is lower than that of other energy sources. Most importantly, the manufacturing, installation, and maintenance costs of conventional ocean energy power generation systems are significantly higher than those of other energy sources, posing a major obstacle to the commercial operation and widespread adoption of ocean energy power generation systems.

[0003] Currently, offshore wind turbines can generate up to 5MW of power per unit. These systems utilize a tower anchored to the seabed and a wind turbine attached to the top of the tower, which is placed above the sea surface to collect wind energy and generate electricity. The tower has a diameter of 6.242m at its bottom and 4.170m at its top, with an average diameter of 5.206m and a total height of 96m. To achieve a single 5MW output, a tower nearly 100m high would be required, with a maximum diameter exceeding 6m to accommodate a generator of this power. Such a tower weighs 439 tons, and construction and installation costs are prohibitive. The high cost prevents it from translating into substantial economic value. Even for large-scale applications, the high cost prohibits its affordability.

[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 ground, and the impeller radius is 165m). However, when generating power using tidal energy, the blade diameter is 70m, and the theoretical generated power is 30MW, and the pile height is only 40m (the blade is 5m above ground, and the impeller radius is 35m). Therefore, compared to offshore wind power generation, tidal power generation requires a significantly lower tower height and lower costs, making the power generation efficiency of tidal power generation higher than offshore wind power generation.

[0005] Conventional tidal power generation devices typically use two types of anchoring means: a floating anchoring means that floats in the sea via a floating bed and is anchored to the seabed or shore with steel cables; and a seabed anchoring means that is anchored directly to the seabed via anchor piles. Because floating anchoring means primarily generate power using ocean wave energy, they generate less power than deep tidal energy, and the floating generators are small, making them of little economic value and gradually being abandoned in practical applications. The second type, the seabed anchoring means, is the anchoring 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 conventional tidal power generation devices is 2 MW. To date, there have been no successful deployments anywhere in the world with a single-unit output exceeding 2 MW. Because tidal power generation devices are limited by the size of the single-unit power generation module, most are extremely expensive and cannot be operated commercially, making them unviable and unprofitable. Specifically, similar to offshore wind turbines, conventional tidal power generation devices are directly anchored to the seabed via fixed piles. Due to the large impact force of seawater, the fixed piles must be large enough 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 a limit to their bearing capacity, so they can only be used with horizontal-axis hydroelectric generators within a certain scale. Because fixed piles cannot be enlarged without limit due to cost and technical constraints, they cannot exceed the single-unit output of horizontal-axis hydroelectric generators. Summary of the Invention

[0007] SUMMARY OF THE INVENTION The present invention provides a large-scale tidal power generation device and assembly platform therefor 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 preventing components, at least two force-receiving and supporting components, and a support frame. The at least four fixed piles are connected together by the support frame to form an installation space surrounding the installation space, and the at least one horizontal-axis hydroelectric generator is installed in the installation space, with 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 are 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. The at least two force-receiving and preventing components are fixed to corresponding fixed piles or the support frame, respectively, and are located on both the left and right sides of the horizontal-axis hydroelectric generator below the water surface in the water flow direction. One end of each of the 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 a corresponding force-receiving blocking part, 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 component and the force-receiving blocking component.

[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 located on both the left and right sides of the horizontal axis hydroelectric generator along the water flow direction, 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 and blocking 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 installed on both the upstream and downstream sides of the horizontal axis hydroelectric generator, and each set of barrier guide grooves extending 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 preventing part, 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 present invention, the assembly platform further comprises 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, the ventilation pipe passing from above the water surface to below the water surface, thereby enabling 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 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 through 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 installed 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, each pile of the assembly platform is provided with a concrete protector 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 generation device, including 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 attached to the assembly platform. The at least one hanging support column has a sealed 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 the force-receiving component or the force-receiving component, 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 present invention, the large-scale tidal power generation device further comprises at least one connecting 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 of which has a hollow structure and is installed corresponding to a force-receiving blocking component, and 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 workers can reach the inside of the fixed assembly cases through the hanging support pillars.

[0023] In one embodiment according to the second aspect of the present invention, the number of suspension support pillars is three, the other ends of two of the suspension support pillars are connected to force-receiving parts or force-receiving support parts located on both sides of the horizontal-axis hydro-electric generator, respectively, the other end of the remaining suspension support pillar is connected to the horizontal-axis hydro-electric generator, and the ends of the three suspension support pillars 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 plant 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 arranged in succession in two rows along the water flow direction, with at least two fixed piles in each row being arranged along the water flow direction; 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 components and at least two force-receiving supporting components, each fixed to a corresponding fixed pile and located on both the left and right sides of the horizontal-axis hydroelectric generator below the water surface in the direction of water flow, with one end of each of the at least two force-receiving supporting components attached to the left and right sides of the horizontal-axis hydroelectric generator in the direction of water flow, and the other end abutting against the corresponding force-receiving blocking component, 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 includes at least two sets of shock absorbing devices, each set of shock absorbing devices being installed between the force-receiving supporting component and the force-receiving blocking component.

[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 located on both the left and right sides of the horizontal axis hydroelectric generator in the water flow direction, one end of the guide grooves is located above the water surface and the other end passes below the water surface, and at least two force-receiving and blocking 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 installed on both the upstream and downstream sides of the horizontal axis hydroelectric generator, respectively, and each set of barrier guide grooves extending 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 connected to the horizontal axis hydro-generator or one of the force-receiving or force-blocking components, 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 fan and a ventilation pipe, the ventilation pipe being fixably or removably arranged 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 present invention, each assembly platform 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 running from above the water surface to below the water surface, 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.

[0033] In one embodiment according to the third aspect of the present invention, each assembly platform includes at least two fixed assembly cases, each of which has a hollow structure and is installed corresponding to a force-receiving blocking component, 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 installed 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 in the area above the lowest water mark at each pile of each assembly platform.

[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 pillar, which is a sealed hollow structure, one end of the hanging support pillar is located above the water surface, and the other end of the hanging support pillar is connected to the horizontal axis hydro-electric generator or the force-receiving preventing part or the force-receiving supporting part, so that workers can reach below the water surface by the hanging support pillar for maintenance or fixing work.

[0038] In one embodiment according to the third aspect of the present invention, the large tidal power generation device further comprises at least one connecting 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 of which has a hollow structure and is installed corresponding to a force-receiving blocking component, and 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 workers can reach the inside of the fixed assembly cases through the hanging support pillars.

[0040] In one embodiment according to the third aspect of the present invention, the number of suspension support pillars is three, the other ends of two of the suspension support pillars are connected to force-receiving parts or force-receiving support parts located on both sides of the horizontal-axis hydro-electric generator, respectively, the other end of the remaining suspension support pillar is connected to the horizontal-axis hydro-electric generator, and the ends of the three suspension support pillars 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 plant 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 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 according to 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 anchored to the seabed; a horizontal axis hydroelectric generator removably mounted on the assembly platform; at least two force-receiving components 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 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 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 that 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 when an operator needs to work in the work area below the water surface to ensure the safety of the operator, starts a blower to ventilate the work area below the water surface.

[0047] In one embodiment according to the fifth aspect of the present invention, the device further includes at least one water pump and at least one drain pipe, the drain pipe being fixably or detachably attached to the inside or outside of the access pipe, one end of the drain pipe being passed above the water surface and the other end being passed through to the working area underwater, so that if water leaks from within the working area underwater, the water pump will suck up the accumulated water inside and discharge it above the water surface through the drain pipe, ensuring the safety of the device or workers.

[0048] In one embodiment according to the fifth aspect of the invention, a large tidal power plant 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 uses four fixed piles and a support frame to form a mounting space, and then fixes and mounts the horizontal-axis hydroelectric generator in the mounting space. This significantly reduces the amount of steel used and reduces manufacturing and installation costs. Furthermore, the present invention also provides force-receiving support components and force-receiving and blocking components on both sides of the horizontal-axis hydroelectric generator, allowing the thrust of the water current received by the horizontal-axis hydroelectric generator to be uniformly transmitted to both sides and thereby distributed throughout the entire assembly platform. As a result, the entire assembly platform can accommodate a horizontal-axis hydroelectric generator with a larger individual output, significantly reducing the power generation costs of the tidal power generator. In particular, the horizontal-axis hydroelectric generator of the present invention has an underwater "fixing point," which avoids the prior art problem of the horizontal-axis hydroelectric generator being easily damaged by resonance caused by shaking under the large thrust of the water current. By using the large-scale tidal power generation device and its assembly platform provided by this embodiment, it is possible to make tidal power generation devices on a truly large scale, reduce the cost of tidal power generation to less than that of thermal power generation, and truly realize the commercialization and application of tidal power generation.

[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 explanation of the drawings]

[0051] [Figure 1] 1 is a top view of a large-scale tidal power generation device provided by a first embodiment of the present invention. FIG. [Figure 2] FIG. 1 is a side view of a large-scale tidal power generation device provided by a first embodiment of the present invention. [Figure 3] 3A to 3C are cross-sectional schematic views of different embodiments of the force-receiving supporting component and the force-receiving preventing component 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. [Figure 5] FIG. 10 is a partial top view of a large-scale tidal power generation device provided by Example 2 of the present invention. [Figure 6] FIG. 10 is a partial side view of a large-scale tidal power generation device provided by Example 2 of the present invention. [Figure 7] FIG. 10 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. 10 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. 10 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. 10 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. 10 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. 10 is a top view of a large-scale tidal power generation device provided by Example 6 of the present invention. [Figure 13] FIG. 10 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. 10 is a schematic diagram of a large-scale tidal power generation device provided by Example 9 of the present invention. [Figure 16] FIG. 10 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. 16 is a schematic diagram of a large-scale tidal power generation device provided by Example 10 of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[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 view of a force-receiving support component and a force-receiving blocking component provided by Example 1 of the present invention. FIG. 4 is a schematic view of the installation of a large-scale tidal power generation device provided by Example 1 of the present invention. In FIG. 2, the right-hand wheel is an enlarged schematic view of the markings on the left-hand 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 components 12, at least two force-receiving support components 13, and a support frame 14. One end of each fixed pile 11 is driven into the seabed F for fixation, 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 together with the support frame 14, the four fixed piles 11 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, with at least two fixed piles 11 in each row being 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 center points of the cross sections of the at least two fixed piles 11 in each set is essentially parallel to the water flow direction D (although 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 Figure 1, when the tide is rising, the water flow direction is D, and when the tide is falling, the water flow direction is D'. In this specification, "left" and "right" refer to both the left and right sides of the water flow direction. Specifically, when viewed from the direction shown in Figure 1, i.e., 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 multiple rigid rods, each connected to two fixed piles 11. Forces received by the assembly platform 1 are resolved by transmitting them between the fixed piles 11 via the support frame 14. By installing the support frame 14, at least four fixed piles 11 are integrally formed, and the force received by one fixed pile 11 is effectively transmitted to the other fixed piles 11, resulting in a uniform distribution of the force received by the assembly platform 1. In this embodiment, support frames 14 are also provided to connect the submerged and above-water portions of the fixed piles 11. If the sea area where the tidal power generation device is located is deep, the fixed piles 11 may be long, and the support frames 14 may be installed in multiple locations below the water surface. This makes the connections between the fixed piles 11 more robust and effectively distributes the force. However, the present invention is not limited thereto, and the connection positions and number of the support frames 14 may be set according to specific requirements.

[0055] In actual 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 and highest positions in FIG. 1 ) can be inserted at an angle into the seabed F. The resistance capacity of each fixed pile 11 inserted at an angle 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 angle can receive and disperse a greater impact force of the water flow.

[0056] In this embodiment, the assembly platform 1 for 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, thereby effectively dispersing the impact force of the water flow and allowing the tidal power generation device to receive and resist the thrust of a larger water flow. As a result, the assembly platform 1 can improve its ability to mount a single horizontal-axis hydroelectric generator 2 with a larger output. In other words, the assembly platform 1 provided by this 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 tidal power generation devices. 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, for example, the conventional offshore wind power generation device described in the background art of this application requires a maximum diameter of over 6 m to support the device, which can accommodate a maximum single-unit output of 5 MW. In this embodiment, at least four fixed piles 11 and a support frame 14 are integrated to distribute the thrust of the water current. A single fixed pile with a diameter of 1.3 m can accommodate a horizontal-axis hydroelectric generator with a single unit output of 5 MW, significantly reducing the diameter of the fixed piles. This also reduces the difficulty and cost of manufacturing each fixed pile. Furthermore, the process of fixing and installing a single fixed pile to the seabed is very complicated. During installation, a piling platform consisting of multiple auxiliary piles is first installed around the single fixed pile. After the single fixed pile is installed and fixed, personnel or vessels are dispatched to remove the piling platform, which requires further underwater work, resulting in very high installation costs. However, in this embodiment, at least four interconnected fixed piles are used to form a natural piling platform. Since there is no need to install a piling platform formed by auxiliary piles, the installation costs of the fixed piles are significantly reduced. Therefore, the total manufacturing and installation costs for four 1.3m diameter fixed piles are less than the manufacturing and installation costs for one 6m diameter fixed pile.

[0058] In this embodiment, if the diameter of each fixed pile is 3m, a horizontal axis hydroelectric generator with a single unit output of 20MW can be installed, breaking through the conventional limit of single unit output and truly increasing single unit output. The maximum single unit output of a conventional tidal power generation device is only 2MW. To achieve 20MW of power generation, up to 10 horizontal axis hydroelectric generators must be operated, and at least 10 assembly platforms must be installed for installation. However, the large-scale tidal power generation device of Example 1 of the present invention only requires the installation of one horizontal axis hydroelectric generator and one assembly platform to achieve 20MW of power generation, thereby significantly reducing costs and making commercial operation of tidal power generation devices truly possible.

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

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

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

[0062] The force-receiving support parts 13 and the force-blocking parts 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 resolved. The thrust passes through the force-receiving support parts 13, the force-blocking parts 12 and the support frame 14 in order, and can be uniformly distributed to each fixed pile 11, and all the fixed piles 11 jointly bear the force. At the same time, the other ends of the two force-receiving support parts 13 are "blocked" by the force-receiving blocking parts 12, respectively, 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" on the force-receiving support parts 13 from top to bottom when viewed from the direction of Figure 1, thereby canceling out and balancing the effects of different forces, 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 current that the horizontal axis hydroelectric generator 2 can withstand.

[0063] In conventional technology, 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 current corresponding to the horizontal-axis hydroelectric generator. Because the bending moment and shear force generated during this process are very large, an upper limit is set on the unit output of the horizontal-axis hydroelectric generator to prevent overloading of the mounting pile. 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 current on the horizontal-axis hydroelectric generator laterally. Tidal power generation devices generate power using the kinetic energy of the water current, and the greater the thrust of the water current, the greater the amount of power generated. Therefore, 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, this is not a limitation of the present invention. 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 support part 13; the force-receiving blocking part 12 only needs to form an engaging relationship with one end of the force-receiving support part 13. FIG. 3 simply shows some possible cross-sectional shapes of the force-receiving blocking part 12 and the force-receiving support part 13. However, the actual shapes of the force-receiving blocking part 12 and the force-receiving support part 13 of the present invention are not limited thereto. In practical applications, the force-receiving support part 13 preferably has an arc-shaped or other streamlined appearance. This arrangement minimizes the resistance force that the force-receiving support part 13 experiences in water.

[0065] In this embodiment, the force-receiving blocking part 12 and the force-receiving support 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 support part 13 can be interference-fitted. Specifically, when the force-receiving support part 13 is attached to the force-receiving blocking part 12, the force-receiving support part 13 and the force-receiving blocking part 12 can be firmly engaged without the need for an additional jack or fixing bolt, and the two will not loosen. For installation, the installer does not need to enter the water for the installation work, so no additional access pipe is required. In this case, the force-receiving blocking part 12 and the force-receiving support part 13 can be manufactured with high precision, and the cross section of the force-receiving support part 13 can be configured to have a specific external shape, allowing for a firm engagement with the force-receiving blocking part 12 (the shape shown on the far right in Figure 3). Because the impact force of the water flow is very large, if the precision of one of the force-receiving support parts and force-receiving blocking parts located on the left and right sides is inconsistent, 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 or 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 attached below the force receiving support part, and when it is necessary to lift the horizontal axis hydroelectric generator from top to bottom out of the water, 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 out of the water.

[0066] In this embodiment, the number of force-receiving blocking members 12 and the number of force-receiving supporting members 13 are both two. However, this is not a limitation of the present invention. In another embodiment, the number of force-receiving blocking members and the number of force-receiving supporting members may be four, with two force-receiving blocking members and two force-receiving supporting members on each side of the horizontal-axis hydroelectric generator along the water flow direction. In another embodiment, the number of force-receiving supporting members 13 may be two and the number of force-receiving blocking members 12 may be four, with two force-receiving blocking members 12 fixed to the other end of the force-receiving supporting member in pairs. In this embodiment, the length of the force-receiving supporting member 13 is perpendicular to the water flow direction D and parallel to the horizontal plane P. Installing the force-receiving supporting member 13 in this manner reduces the amount of steel used in the force-receiving supporting member 13 and the bending moment generated by the force-receiving supporting member 13. This is also not a limitation of the present invention. In another embodiment, the length of the force-receiving supporting member is perpendicular to the water flow direction but not parallel to the horizontal plane; that is, the force-receiving supporting member can be installed at an angle. The greater the inclination of the force-receiving support part 13, the longer the length of the force-receiving support part 13, the more steel is used, and the greater the bending moment that occurs. Therefore, the connecting end of the force-receiving support part 13 and the force-receiving blocking part 12 must be installed below the water surface.

[0067] In this embodiment, one ends of the two force-receiving support components 13 are directly attached to the generator unit of the horizontal-axis hydroelectric generator 2 and are located on both the left and right sides. However, the present invention is not limited thereto. In another embodiment, the horizontal-axis hydroelectric generator may have a suspension support column, and one ends of the two force-receiving support components 13 may be attached to the suspension support column and still be located on both sides of the horizontal-axis hydroelectric generator 2. That is, since one end of the force-receiving support component is directly or indirectly attached to the horizontal-axis hydroelectric generator 2, the force received by the horizontal-axis hydroelectric generator 2 is resolved to both sides. Preferably, the two force-receiving support components 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, and the greater the bending moment generated in the suspension support column.

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

[0069] The method of fixing each fixed pile 11 to the seabed F in this embodiment may be driven using the driving method disclosed in another Chinese patent application (publication number CN105401564) by the inventor, or other conventional driving methods, which 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 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 Chinese patent application No. CN10540156.

[0070] First, in the inventor's Chinese patent application No. CN10540156, the horizontal axis hydroelectric generator is first attached to the inner frame, and then the inner frame is inserted into the outer frame. The installation of the inner and outer frames increases the amount of steel used and significantly improves costs. After the inventor put his previously invented tidal power generation device into practical use, he discovered that the thrust generated by the water current is enormous and unimaginable, reaching a maximum thrust of 2,000 to 3,000 tons. Therefore, simply increasing the weight of the inner frame may cause the friction caused by its own gravity to offset the thrust of the water current of the hydroelectric generator, resulting in a sharp increase in steel usage and costs. This embodiment completely eliminates the use of frames. The entire assembly platform requires the use of a rebar cage during the process of pouring concrete to form the fixed piles. Other than the force-bearing support components, force-blocking components, and support frame, no other steel is required. The amount of steel used in the entire assembly platform is geometrically reduced, and manufacturing costs are also significantly reduced.

[0071] The inventors have demonstrated that, by implementing the mounting method and structure previously invented by the inventors, a horizontal axis hydroelectric generator with a single-unit output of 200 kW, an impeller diameter of 5.4 m, and an impeller cross-section of 22.9 m² can withstand a water current thrust of 23 tons. To ensure safe operation of the hydroelectric generator, the inner frame must weigh more than 230 tons. However, the entire assembly platform of this tidal power generation device only weighs 125 tons (when the buoyancy generated by the hollow force-receiving components and hollow generator cabin is removed, the actual gravity in the water is only 25 tons). This allows a horizontal axis hydroelectric generator with a single-unit output of 1.5 MW to operate smoothly. The impeller diameter is 15 m, the impeller cross-section is 177 m², and the hydroelectric generator can withstand a water current thrust of 177 tons. If the mounting method and structure already invented by the present inventor are used, a frame of up to 1800 tons is required to mount a 1.5 MW horizontal axis hydroelectric generator, and a frame of this weight is completely impossible to achieve both from the viewpoints of technology and cost. 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 Chinese Patent Application No. CN10540156 is rotatably fixed to the top and bottom of the inner frame by a central rotating shaft. Under the huge thrust of water currents, the horizontal axis hydroelectric generator is prone to vibration during operation, and the larger the generator, the more severe the vibration. The severe vibration causes the elements within the horizontal axis hydroelectric generator to resonate, resulting in damage. Therefore, after the inventor's previously invented tidal power generation device was put into practical use, the installation method in Chinese Patent Application No. CN10540156 only allowed safe operation of 200 kW or 300 kW horizontal axis hydroelectric generators. When the individual unit output reached 1 MW or more, the horizontal axis hydroelectric generator was prone to damage, making it impossible to improve the individual unit output of the horizontal axis hydroelectric generator. However, in the tidal power generation apparatus provided by this embodiment, at least two "restraint points" are provided at or near the waist of the horizontal axis hydroelectric generator, and the horizontal axis hydroelectric generator is directly and firmly fixed to the force-receiving support parts, and the force-receiving support parts are also firmly fixed to the force-receiving blocking parts, and the force-receiving blocking parts and the support frame are also firmly fixed to the fixing piles. In other words, the horizontal axis hydroelectric generator and the assembly platform are in a firmly fixed relationship, and the elements do not vibrate beyond a safe range in the water, avoiding resonance problems. Therefore, the tidal power generation apparatus 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, located on both the left and right sides of the horizontal axis hydroelectric generator 2 in the water flow direction D. The guide grooves 121 extend from above the water surface to below the water surface, and at least two force-receiving and blocking components 12 are 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 above the water surface P, and the other end may be at the same height as or lower than the center point of the horizontal axis hydroelectric generator 2. The function of the guide grooves 121 is to facilitate the installation and fixing of the force-receiving and supporting components 13. When installing the force-receiving and supporting components 13, one end of the force-receiving and supporting component 13 slides along the guide groove 121 from the water surface to underwater, and then can be fixed to the force-receiving and blocking component 12 located at the bottom end of the guide groove 121.

[0074] In this embodiment, a barrier must be installed upstream or downstream of the horizontal axis hydroelectric generator 2 to effectively reduce damage caused by marine debris (e.g., marine debris or floating ice) to the horizontal axis hydroelectric generator 2. Due to the abundance of marine debris, after the barrier has been in use for a certain period of time, the debris on its surface must be periodically cleaned to ensure that the water flow into the horizontal axis hydroelectric generator 2 is smooth and not blocked by the debris, thereby ensuring power generation efficiency. Furthermore, the water current is strong and the debris is often sharp, which can cause breakage even if the barrier is made of steel wire, necessitating frequent repair and replacement. The workers responsible for cleaning, installing, and maintaining conventional barriers must work underwater, which is difficult to operate and inefficient. Furthermore, maintenance and cleaning are also dangerous because the collision of water currents around the tidal power generator easily generates vortices.

[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 installed on both the upstream and downstream sides of the horizontal axis hydroelectric generator 2, respectively (when the water flow direction is shown by D in FIG. 1, the bottom in FIG. 1 is the upstream side and the top 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 grooves 16 from top to bottom along a pair of barrier guide grooves 16, and then slide to the bottom end under the action of gravity, thereby completing the installation and fixing of the barrier. The installation of the barrier guide grooves 16 makes the barrier easy to install, and installation can be completed by performing operations directly on the sea surface without requiring subsea installation work. 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 grooves 16, and the operator only needs to operate it on the water surface. Therefore, the installation of the barrier guide grooves 16 makes the barrier easy to clean and replace. The installation of the barrier guide grooves 16 reduces the costs of installing, maintaining, and replacing the barrier. This embodiment does not limit the specific type of barrier.

[0076] In this embodiment, the assembly platform 1 includes at least one access pipe 17, which passes from above the water surface to below the water surface, allowing workers to 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, there are two access pipes 17, and the two access pipes 17 are installed along the support frame 14. In one embodiment, the access pipes 17 are each connected to the force-receiving support part 13, allowing workers to reach inside the force-receiving support part 13 through the access pipes 17 and fix and install the force-receiving support part 13 and the force-receiving blocking part 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 components 13 may be hollow, and workers can reach the inside of the horizontal-axis hydroelectric generator 2 through the access pipe 17 and the force-receiving support components 13 to perform maintenance on the inside of the horizontal-axis hydroelectric generator 2 (for example, changing engine oil, replacing gears, replacing sealing components, etc.). However, the present invention is not limited thereto. In another embodiment, the assembly platform may have only one access pipe, which is also installed in the fixed pile. Workers can reach the force-receiving support components on one side through the access pipe, fix and install the force-receiving support components and force-receiving blocking components on one side, and also reach the inside of the horizontal-axis hydroelectric generator through the force-receiving support components to perform maintenance on the horizontal-axis hydroelectric generator. Furthermore, they can pass through the force-receiving support component on one side, the horizontal-axis hydroelectric generator, and the force-receiving support component on the other side in sequence, and fix and install the force-receiving support component and force-receiving blocking component 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 component, and the installer can reach the force-receiving blocking component through the access pipe and fix and install the force-receiving support component and the force-receiving blocking component. In another embodiment, the assembly platform can have a dedicated access pipe installed to communicate between the water surface and the interior of the horizontal axis hydro-electric generator.

[0078] In this embodiment, the assembly platform 1 further includes at least one fan 181 and a ventilation pipe 182. The ventilation pipe 182 is fixably or removably arranged within or along the outside of the access pipe 17. The ventilation pipe 182 runs from above the water surface P to below the water surface P, thereby providing ventilation in the underwater work area. Conventional tidal power generation devices do not take underwater installation or maintenance into consideration. While the inventor has previously considered underwater maintenance, they ignore the problem that high temperatures caused by long-term use of internal machinery can result in the generation of toxic and harmful gases and excessive carbon dioxide concentrations. When underwater work is required, workers must remain underwater for long periods of time, making them susceptible to hypoxia or carbon dioxide poisoning. The fan 181 and ventilation pipe 182 in this embodiment form a fresh air blowing system, significantly ensuring the safety of underwater maintenance or installation personnel. When workers need to enter the underwater work area to work, the fan can be activated to ventilate the underwater work area. In a specific application, the fresh air blowing system may have a more complicated structure, such as an independent blowing system and an exhaust system, which will not be 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 fixably or removably arranged within the access pipe 17 or along the outside of the access pipe. The drain pipe 184 runs from above the water surface P to below the water surface P. The water pump 183 pumps up accumulated water in the underwater work area and discharges it above the water surface through the drain pipe 184. Because most of the entire tidal power generation device is underwater, the sealing ring easily loosens after long-term use, making it difficult to ensure that the sealing ring does not leak. Without protective measures, maintenance or installation personnel could be at risk of death if they enter the underwater work area through 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 workers need to perform underwater work, they start the water pump 183 and operate it for a certain period of time to observe whether accumulated water is discharged through the drain pipe 184. The worker can enter the access pipe 17 until the accumulated water in the drain pipe 184 is gone. 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 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 passing from above the water surface to below the water surface can be installed inside 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 a force-receiving blocking component 12, so that an operator can work inside the fixed assembly case 18. The fixed assembly case 18 is attached to the force-receiving support component 13 at one end thereof abutting against the force-receiving blocking component 12, so as to fixedly connect the force-receiving blocking component 12 and the force-receiving support component 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 inside the fixed assembly case 18 instead of directly communicating with the force-receiving support component 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. During the installation process of the tidal power generation apparatus of this embodiment, the horizontal axis hydroelectric generator 2, at least two force-receiving support components 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 have been fixed to the seabed F, the inner module is suspended from top to bottom into 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 fixing assembly case 18 through the access pipe 17 and adjusts the fixing assembly 186 (for example, by screwing in a fixing bolt or thrusting up a jack) to firmly engage the fixing assembly case 18 with 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 fixing 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 water flows 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 in FIG. 1 , and the associated fixing assembly case 18 is pressed to abut against the upper side of the force-receiving blocking part 12 as viewed in FIG. 1 . In actual manufacturing, it is difficult to ensure that the size of the fixing assembly case 18 perfectly matches the size of the positioning groove of the force-receiving blocking part 12. Due to the existence of tolerances, there is a gap between the fixing assembly case 18 and the force-receiving blocking part 12. 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 (e.g., by screwing in the fixing bolts or thrusting 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, thereby preventing 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 any possible accumulated water through the drain pipe 184, thereby ensuring the safety of workers. In another embodiment, if 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 each row of fixed piles 11 facing the horizontal axis hydroelectric generator 2. The side plate 19 can form a passage for rectifying the water flow, i.e., can collect the water flow and effectively guide the horizontal axis hydroelectric generator 2, thereby improving power generation efficiency. In another embodiment, side plates are also installed on all four sides, above, below, left, and right, as viewed from the direction of Figure 2, thereby forming passages for collecting water and guiding the water so that it flows toward the horizontal axis hydroelectric generator 2.

[0085] As shown in FIG. 4 , in this embodiment, concrete protectors 111 are installed above the lowest tide line L on each fixed pile 11 of the assembly platform 1. This protects each fixed pile 11 from severe corrosion in the intertidal zone, thereby extending the service life of the fixed pile 11 and the assembly platform 1, thereby reducing maintenance frequency and costs. Because water serves to isolate oxygen from the air, the portions of the fixed piles 11 below the water surface are less susceptible to corrosion, while the portions of the fixed piles 11 above the water surface are most susceptible to corrosion. Without concrete protectors, corrosion of the portions of the fixed piles 11 above the water surface could result in uneven force transmission between the fixed piles 11, potentially causing the entire assembly platform 1 to become unbalanced or topple. With the installation of the concrete protectors 111, the service life of the entire assembly platform 1 can be extended to 50 years. Because the height of the water surface P changes with the tides, the lowest end of the concrete protectors 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, thereby forming the concrete protection device 111.

[0086] FIG. 5 is a partial top view of a large-scale tidal power generation device provided by Example 2 of the present invention. FIG. 6 is a partial side view of a large-scale tidal power generation device provided by Example 2 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 Example 2 of the present invention. FIG. 8 is a schematic diagram of the installation of the large-scale tidal power generation device provided by Example 2 of the present invention. Please also refer to FIGS. 5 to 8. The assembly platform 1, horizontal axis hydroelectric generator 2, fixed piles 11, concrete protection device 111, force-receiving blocking component 12, force-receiving support component 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 panel 19, etc. of Example 2 are basically the same in structure and function as the corresponding elements of Example 1, and therefore use the same symbols. Below, only the differences are described.

[0087] In Example 2, the large-scale tidal power generation device includes an assembly platform 1, at least one horizontal-axis hydroelectric generator 2, and at least one suspension support column 31. The at least one horizontal-axis hydroelectric generator 2 is removably attached to the assembly platform 1. FIG. 5 shows only the terminal 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 actual applications, multiple assembly platforms 1 and multiple horizontal-axis hydroelectric generators 2 are arranged in 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 FIGS. 5 and 6. Therefore, an additional force-receiving and preventing element 12 is installed on the two central fixed piles 11 on the right side, or on the support frame 14 connecting the fixed piles 11, and this force-receiving and preventing element 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 blocking component 12 or the force receiving support component 13, so that workers 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 blocking component 12. Specifically, the tidal power generation device of this embodiment includes three hanging support columns 31. One end of the central hanging support column 31 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 supports 31 are located on both sides of the horizontal axis hydroelectric generator 2 in the water flow direction D, and the other ends of these two suspension supports 31 are respectively connected to the fixed assembly cases 18 located on both sides of the horizontal axis hydroelectric generator 2. The suspension supports 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 sliding of the fixed assembly case 18 and facilitate the installation and fixing of the fixed assembly case 18. The guide grooves 121 can fix and guide the suspension supports 31. In another embodiment, when there is no fixed assembly case 18, the other ends of the suspension supports 31 located on both sides can be directly connected to the force-receiving support parts 13.

[0089] The suspension support columns 31 have a sealed hollow structure, and a ladder can be installed inside the suspension support columns 31. Workers can enter the interior of the horizontal axis hydroelectric generator 2 through the ladder inside the central suspension support column 31 to perform work (for example, maintenance work such as replacing sealing rings or engine oil, or pipe arrangement work). If 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 interior of the horizontal axis hydroelectric generator 2 to perform maintenance. Workers can reach the inside of the fixing assembly case 18 through the suspension support columns 31 on both sides and complete the installation and fixation of the fixing assembly 18 and the force-receiving blocking component 12.

[0090] In most conventional tidal power generation systems, a single mounting pile is installed below the horizontal-axis hydroelectric generator. However, this mounting method has two obvious drawbacks. First, the support of the single mounting pile is subjected to the entire thrust of the water current of the horizontal-axis hydroelectric generator, resulting in excessive bending moment and shear force. This prevents the installation of a higher-power horizontal-axis hydroelectric generator, resulting in high power generation costs. Second, when maintenance of the horizontal-axis hydroelectric generator is required, workers must disconnect the connection between the horizontal-axis hydroelectric generator and the mounting pile underwater and then lift the horizontal-axis hydroelectric generator out of the sea, creating a major safety hazard during maintenance. Furthermore, to ensure the horizontal-axis hydroelectric generator's normal operation, the mounting pile and the horizontal-axis hydroelectric generator must be rigidly fixed together. This makes it extremely difficult to disconnect the connection between the two, let alone operate it underwater, making maintenance extremely difficult. 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, when the sealing ring loosens after long-term use, water enters the horizontal axis hydroelectric generator, and the engine oil of the horizontal axis hydroelectric generator needs to be replaced), the entire 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, preventing commercialization of tidal power generation devices.

[0091] However, when the horizontal-axis hydroelectric generator 2 of this embodiment requires maintenance, the maintenance personnel can use the suspension support column 31 to directly enter the interior of the horizontal-axis hydroelectric generator 2 to perform underwater work. In actual application, the service life of the assembly platform of this embodiment can reach 50 years, while the service life of the horizontal-axis hydroelectric generator is 20 years. When the horizontal-axis hydroelectric generator 2 reaches the end of its service life, the fixed connection between the horizontal-axis hydroelectric generator 2 and the assembly platform 1 can be simply released, and the horizontal-axis hydroelectric generator 2 can be lifted up from the water surface and installed as a new horizontal-axis hydroelectric generator. The horizontal-axis hydroelectric generator 2 of this embodiment is detachably mounted by an upside-down suspension method, and the cost and difficulty of maintaining and replacing the horizontal-axis hydroelectric generator 2 are lower than those of a horizontal-axis hydroelectric generator directly mounted on the seabed.

[0092] Because the horizontal axis hydroelectric generator 2 of this embodiment is fixed underwater by the suspended support column 31 and the force-receiving support members 13 on both sides, the horizontal axis hydroelectric generator 2 does not sway under the huge thrust of the water current, and the vibration generated is within a safe range. Therefore, the tidal power generation device provided by this embodiment can operate a larger horizontal axis hydroelectric generator, which means that the horizontal axis hydroelectric generator has a larger individual output. While the maximum individual power that can be loaded by a conventional tidal power generation device is 2 MW, the tidal power generation device of this embodiment can be mounted and operated with a horizontal axis hydroelectric generator with an individual output of 5 MW, 10 MW, or 20 MW. This will greatly promote the development of the marine energy power generation industry, promote technological progress, and bring about fundamental changes in the industry.

[0093] At the same time, even with a single-unit power output of 2 MW, conventional tidal power generators cannot continue generating power because they do not address maintenance and other issues. Although some tidal power generators take maintenance into consideration, the high maintenance costs make the generation costs of tidal power generation much higher than other energy sources. As a result, the commercial value of conventional tidal power generators has remained very low. The hanging support column of this embodiment not only provides support, but also allows workers to enter the horizontal axis hydroelectric generator for maintenance, significantly reducing maintenance costs.

[0094] Furthermore, in the patents and embodiments already filed for this 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 significantly reduces the amount of steel used and further reduces the cost of the power generating device. Furthermore, the installation of a frame inevitably blocks the water flow, forming a water flow cross section and reducing the water flow utilization rate 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 connecting part 4, which is connected laterally or vertically to one end of the hanging support column 31 located above the water surface and to the assembly platform 1. When the connecting part is connected laterally, the connecting 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 to be separated, it is only necessary to release the connection between the connecting part 4 and the assembly platform 1.

[0096] In this embodiment, the enclosed hollow suspension support column 31 serves as the access pipe 17. In this embodiment, the three suspension support columns 31, two fixed assembly cases 18, two force-receiving support components 13, and the horizontal-axis hydroelectric generator 2 collectively constitute the inner module. If the fixed assembly case 18 is damaged and maintenance is required, maintenance or replacement of any position on the inner module can be performed simply by releasing the fixed relationship between the inner module and the assembly platform 1 and then lifting the inner module from the bottom up from the sea surface. However, the present invention is not limited thereto. In another embodiment, the access pipes 17 on both sides can be installed directly within the fixed piles 11. In this 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 fan 181, a ventilation pipe 182, a water pump 183, and a drain pipe 184 are installed on each of the hanging support columns 31 (i.e., the access pipes 17) of the large-scale tidal power generation device of this embodiment, ensuring the safety of underwater workers. The structures and mechanisms of the fan 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 pillars 31 may be one, the central hanging support pillar 31 being a sealed hollow structure, and the hanging support pillars 31 located on both sides may not be hollow, or hanging support pillars 31 on both sides may not be required. The worker enters the interior of the horizontal axis hydroelectric generator 2 through the central hanging support pillar 31, and then passes through the interior of the hollow force-receiving support parts 13 to reach the other ends of the force-receiving support parts 13, and performs fixing between the force-receiving support parts 13 and the force-receiving blocking parts 12, or fixing between the fixing assembly case 18 and the force-receiving blocking parts 12. 10, in Example 4, the number of suspension support columns 31 may be two, and the suspension support columns 31 located on both sides may be sealed hollow structures, while the central suspension support column 31 may be solid, or both side suspension support columns 31 may not be required, and workers can reach the inside of the horizontal axis hydroelectric generator 2 through the suspension support columns 31 and the hollow force-receiving support components 13 on either side. As shown in FIG. 11, in Example 5, the number of suspension support columns 31 may be two, and the suspension support columns 31 may be located on the left or right side, and the central suspension support column 31 and the other side suspension support columns 31 may be solid, or neither the central nor other side suspension support columns 31 are required, and workers can enter the force-receiving support component 13 through the leftmost suspension support column 31, then pass through the hollow force-receiving support component 13 to reach the inside of the horizontal axis hydroelectric generator 2, and then pass through the horizontal axis hydroelectric generator 2 and another force-receiving support component 13 to reach the rightmost side. The present invention is not limited thereto. In other embodiments, the force-receiving support part 13 may not be hollow, and workers can reach the desired location through the three hollow hanging support columns 31, respectively, without having to pass through the inside of the force-receiving support part 13. In these 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, where the upper dotted circle in Figure 12 is an enlarged view of the marking of the lower dotted circle. The assembly platform 1, horizontal axis hydroelectric generator 2, fixed piles 11, concrete protection device (not shown), force-receiving prevention component 12, force-receiving support component 13, support frame 14, mounting space 15, blower (not shown), ventilation pipe 182, water pump (not shown), drainage pipe 184, side panel 19, etc. of Example 6 are basically the same in structure and function as the corresponding elements of Example 1, and therefore the same symbols are used. Below, only the differences will be described.

[0100] In this embodiment, the assembly platform 1 does not include the fixed assembly case of the first embodiment, but still includes 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 blocking part 12 by the fixing assembly, and a sealing device seals the connection. In this embodiment, four access pipes 17 are installed along the outside of the fixed pile 11, with one end of the access pipe 17 located above the water surface and the other end communicating with the force-receiving blocking part 12. Workers can enter the force-receiving blocking part 12 through the access pipe 17 to adjust the fixing assembly, thereby fixing the force-receiving support part 13 and the force-receiving blocking part 12. In another embodiment, the access pipe 17 can be located in the center of FIG. 12 , and this access pipe 17 can be installed on the support frame 14. Through this access pipe, the underwater work area can be reached to fix the fixing assemblies at four positions. This installation method has the lowest cost. A blower, ventilation pipe 182, water pump and drain pipe 184 can all be installed correspondingly to ensure the safety of workers.

[0101] 13 is a top view of a large-scale tidal power generation device provided by Example 7 of the present invention. The assembly platform 1, horizontal axis hydroelectric generator 2, fixed piles 11, concrete protection device 111, force-receiving blocking components 12, force-receiving supporting components 13, support frame 14, mounting space 15, barrier guide groove 16, access pipe 17, blower, ventilation pipe, water pump, drainage pipe, side panel 19, etc. of Example 7 are basically the same in structure and function as the corresponding elements of Example 1, and therefore the same symbols are used. Below, only the differences will be described.

[0102] In Example 7, the tidal power generation device does not include a fixed assembly case. The assembly platform further includes at least two sets of shock absorbing devices 21, each set of shock absorbing devices 21 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 to both the upstream and downstream sides of one end of the force-receiving support part 13 away from the horizontal-axis hydroelectric generator 2. Each shock absorbing device abuts against the force-receiving blocking part 12. The shock absorbing devices 21 can be made of a special polyethylene polymer material, rubber material, springs, etc. The installation of the shock absorbing devices 21 can effectively reduce resonance that may occur in the horizontal-axis hydroelectric generator 2.

[0103] FIG. 14 is a schematic diagram of a barrier provided by Example 8 of the present invention. In FIG. 14, the dotted circle on the right is a top view of the dotted circle on the left. In this example, the assembly platform includes at least two barriers 3, located on both the upstream and downstream sides of the horizontal-axis hydroelectric generator 2, respectively. Each barrier 3 has a width W of 8 centimeters along the water flow direction. Conventional tidal power generation devices ignore the risk of marine debris (such as marine debris or floating ice) damaging the hydroelectric generator's impeller. In light of this, the inventors have adopted a method of installing barriers, thereby reducing the possibility of marine debris being entangled in the impeller. However, after more than a year of practice, it has been found that when a barrier made of braided steel wires is continuously subjected to the influence of water currents, the joints of the steel wires rub against each other, gradually thinning the wires at the joints. Eventually, the steel wires break, and the barrier's ability to block marine debris is lost. Furthermore, the broken steel wires can be twisted into the hydroelectric generator's impeller, destroying the blades and causing the entire horizontal-axis hydroelectric generator to fail. This not only fails to protect the impeller, but also increases maintenance costs. 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 current impacts. Due to the specific nature of this field, the cost of maintenance or part replacement for a tidal horizontal axis hydroelectric generator increases significantly, hindering the commercial operation of the tidal power generation device. Previously, those skilled in the art have fallen into the misconception that they always consider problems theoretically, ignoring the economic applicability after the power generation device is actually used. The inventor finally determined this 8 centimeter parameter through experience and lessons learned, continuous practice, and accumulated knowledge, to ensure 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 the diameter of the steel wire, i.e., approximately 8 mm. In practical applications, the width W of the barrier 3 along the water flow direction may be 30 centimeters, effectively preventing ice collisions in the waters near northern Canada while ensuring 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 corresponding assembly platform and is not limited by the present application, and may be, for example, 15 m x 20 m. 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 is not limited by the present application. The barrier mesh may be square or diamond-shaped, and the size of the mesh distance is not limited by the present application, and may be 30 cm x 30 cm. Furthermore, the present application does not limit the barrier's support frame or its material.

[0105] Figure 15 is a schematic diagram of a large-scale tidal power generation device provided by Example 9 of the present invention. Figure 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 Figures 15 and 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 have the same structures as the assembly platform and horizontal axis hydroelectric generator described in Example 2, and here, the same structures are indicated by the same symbols. The tidal power generation device in Example 9 also has all other components described in Example 1 or Example 2, and will not be described here.

[0106] In Example 9, 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. The at least four fixed piles 11 are arranged in two rows, one on the left and one on the right, along the water flow direction, with at least two fixed piles 11 in each row 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 corresponds to the diameter of the impeller of the horizontal axis hydroelectric generator 2, so that at least one additional 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] In the tidal power generation devices described in the patents already filed by the inventor and in the specific embodiments, the horizontal axis hydroelectric generator is first attached to the inner frame to form an inner module, then the outer frame is anchored to the seabed to form an assembly platform, and then the inner module is suspended from the underwater outer frame, thereby completing the installation of the tidal power generation device. In terms of manufacturing costs, 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 previous embodiments does not use a conventional frame, which significantly reduces the amount of steel required in the manufacturing process and, as a result, significantly reduces manufacturing costs.

[0108] Next, in terms of installation costs, the installation costs of a conventional tidal power generation device include the installation costs of the assembly platform and the installation costs of the internal modules. If the internal module includes a frame, the installation costs of the internal module include the installation costs of the generators and the corresponding frame. To install three hydroelectric generators perpendicular to the water flow direction and parallel to the horizontal plane, the installation costs of three frames, three hydroelectric generators, and three assembly platforms are required. However, the installation method of this embodiment not only eliminates the need for frame installation, but also reduces the number of platforms by one, i.e., only two installation platforms are required to install three hydroelectric generators, thus significantly reducing the installation costs of the tidal power generation device. If five hydroelectric generators are required, only three assembly platforms are required.

[0109] In terms of the actual cost of a tidal power generation device, the costs 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 installation method disclosed in this embodiment significantly reduces the cost of "extending" the tidal power generation device in directions 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] During the actual installation process, if the anchoring piles are installed too close together, the rock and sediment on the seabed are likely to loosen. Therefore, it is necessary to install additional piles at a distance of at least 3 to 5 times the diameter of the piles. Thus, the utilization rate of conventional tidal power generation devices is low, resulting in a waste of resources. For example, if the diameter of the anchoring piles is 3 meters, additional anchoring piles must be installed at a distance of more than 9 meters. Otherwise, the adjacent assembly platforms cannot be firmly fixed, which can lead to pile collapse and distortion during operation, and the entire device may have to be scrapped and re-installed. The installation method of this embodiment completely avoids this problem in the prior art, reducing costs while fully utilizing tidal energy.

[0111] 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 features of the embodiments described herein can be freely combined and used according to actual circumstances. For example, the barrier in Example 8 can be applied to the tidal power generation devices in Examples 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10, and the barrier in Example 8 can also be applied to any conventional tidal power generation devices. The tidal power generation devices in Examples 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 can also use barriers of other structures. The tidal power generation devices disclosed in Examples 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 can be installed according to the method disclosed in Example 9. The large-scale tidal power generation devices disclosed in Examples 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 can be arrayed according to other conventional installation methods. The installation method in Example 9 can also be applied to tidal power generation devices of other conventional structures. Each assembly platform and internal module in Example 9 may be completely the same as or different from Examples 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10. In Examples 1 to 9, at least two horizontal axis hydroelectric generators can be mounted in the water depth direction as described in Example 10. The structure of the internal module of each assembly platform of the tidal power generation device in Example 10 may be completely the same as Examples 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10.

[0113] In short, instead of mounting the horizontal-axis hydroelectric generator on a frame as in the prior art, the present invention uses four fixed piles and a support frame to form a mounting space, and then fixes and mounts the horizontal-axis hydroelectric generator in the mounting space. This significantly reduces the amount of steel used and reduces manufacturing and installation costs. Furthermore, the present invention also provides force-receiving support components and force-receiving and blocking components on both sides of the horizontal-axis hydroelectric generator, allowing the thrust of the water current received by the horizontal-axis hydroelectric generator to be uniformly transmitted to both sides and thereby distributed throughout the entire assembly platform. As a result, the entire assembly platform can accommodate a horizontal-axis hydroelectric generator with a larger individual output, significantly reducing the power generation costs of the tidal power generator. In particular, the horizontal-axis hydroelectric generator of the present invention has an underwater "fixing point," which avoids the prior art problem of the horizontal-axis hydroelectric generator being easily damaged by resonance caused by shaking under the large thrust of the water current. By using the large-scale tidal power generation device and its assembly platform provided by the present application, it is possible to make tidal power generation devices on a truly large scale, keep the cost of tidal power generation lower than that of thermal power generation, and truly realize the commercialization and application of tidal power generation.

[0114] As described above, the present invention has been disclosed by the preferred embodiments, but the present invention is not limited thereto, and those 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, wherein the at least one horizontal axis hydroelectric generator is installed 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, the at least four fixed piles being arranged in two rows on the left and right along the water flow direction, and at least two fixed piles in each row being arranged sequentially along the water flow direction; At least two force-receiving and preventing components are fixed to the corresponding fixed piles or support frames, respectively, and are located on both the left and right sides of the horizontal axis hydroelectric generator below the water surface in the water flow direction; 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 connected to the corresponding force receiving prevention parts; at least one access pipe; one end of the at least one access pipe is located above the water surface, and the other end is connected to the horizontal axis hydro-electric generator or one of the force receiving components or the force receiving preventing component, so that an operator can reach below the water surface through the at least one access pipe for maintenance or fixing work; An assembly platform for large-scale tidal power generation devices.

2. 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. 2. The assembly platform for a large-scale tidal power generation device according to claim 1, characterized in that the assembly platform further includes at least one fan and a ventilation pipe, the ventilation pipe being fixably or detachably arranged inside 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 enabling ventilation in the working area below the water surface.

4. 2. The assembly platform for a large-scale tidal power generation device according to claim 1, wherein the assembly platform further includes at least one water pump and at least one drain pipe, the drain pipe being fixably or detachably arranged 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 sucking up accumulated water in the working area below the water surface and discharging it above the water surface through the drain pipe.

5. The assembly platform further includes at least two fixed assembly cases, each of which has a hollow structure and is disposed corresponding to the force-receiving blocking component; 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.

2. An assembly platform for a large-scale tidal power generation device according to claim 1.

6. 2. The assembly platform for a large-scale tidal power generation device according to claim 1, wherein a concrete protection device is provided in an area above the lowest tide line of each of the piles of the assembly platform.

7. A large-scale tidal power generation device, An assembly platform according to any one of claims 1 to 6; at least one horizontal axis hydroelectric generator removably mounted on the assembly platform; and at least one hanging support pillar having a sealed hollow structure, 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 a force-receiving preventing component or a force-receiving supporting component, so that workers can reach below the water surface by means of the hanging support pillar for maintenance or fixing work.

8. 8. The large-scale tidal power generation device according to claim 7, 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 columns is at least two, and the other ends of the at least two hanging support columns are respectively connected to the corresponding fixed assembly cases.

9. 8. The large-scale tidal power generation device according to claim 7, wherein the number of the suspension support pillars is three, the other ends of two of the suspension support pillars 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 one of the suspension support pillars is connected to the horizontal axis hydroelectric generator.

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