Overwater photovoltaic box transformer substation platform

Abstract

The utility model discloses an overwater photovoltaic box transformer substation platform, which comprises a box transformer substation foundation, a box transformer substation oil pool and a cable platform, the box transformer substation foundation comprises a pipe pile and a prefabricated steel platform used for installing a box transformer substation device, a cantilever platform beam is fixed on the lower surface of the prefabricated steel platform, the bottom of the cantilever platform beam is fixed on the top of the pipe pile, and the cable platform is fixed on the prefabricated steel platform. The box-type transformer substation oil pool and the cable platform are located on the left side and the right side of the lower portion of the cantilever platform beam respectively. The box-type transformer substation oil pool is fixed on the pipe pile through the oil tank joist, and the box-type transformer substation oil pool is welded with the cantilever platform beam; the box-type transformer substation oil pool comprises two detachable sub-oil pools which are symmetrically arranged. The cable platform comprises a high-voltage cable box transformer substation support, a low-voltage cable box transformer substation support and a cable two-layer grillwork, and the cable two-layer grillwork is located below the high-voltage cable box transformer substation support and the low-voltage cable box transformer substation support. According to the utility model, the box-type transformer oil pool and the cable platform are arranged separately, thereby effectively preventing oil leakage from damaging the cable, and avoiding electrical faults and fire risks.

Description

Technical Field

[0001] The utility model relates to the technical field of solar photovoltaic technology, in particular to an above-water photovoltaic box-type transformer platform. Background Art

[0002] A solar photovoltaic power generation system uses a photovoltaic array formed by solar photovoltaic modules to receive incident sunlight, convert the light energy into electrical energy through photoelectric conversion, and then collect the generated electricity for use. This technology offers the advantages of being pollution-free, low-cost, and providing sustainable power generation, and is increasingly being used in areas with ample sunlight worldwide. In addition to installing solar photovoltaic arrays on rooftops and open ground, exposed water surfaces are also ideal locations for utilizing solar energy. Waterborne photovoltaic substation platforms primarily consist of a substation oil reservoir and a cable platform. In existing technology, the substation oil reservoir and cable platform are typically integrated, as in Chinese patent CN202321634367.X. This can result in oil leaks damaging the cables, leading to electrical failures and fire risks. This design also hinders cable maintenance and inspection. Furthermore, in existing technology, the substation oil reservoir is often integrated, as in Chinese patents CN202321634367.X and CN202420514759.0, making installation and maintenance difficult. Utility Model Content

[0003] The purpose of the utility model is to provide a water-based photovoltaic box-type transformer platform in response to the technical defects in the prior art.

[0004] The technical solution adopted to achieve the purpose of this utility model is:

[0005] A waterborne photovoltaic box-type transformer platform, comprising a box-type transformer foundation, a box-type transformer oil pool, and a cable platform, wherein:

[0006] The box-type transformer foundation includes pipe piles and a prefabricated steel platform for installing the box-type transformer device. A cantilever platform beam is fixed to the lower surface of the prefabricated steel platform. The bottom of the cantilever platform beam is fixed to the top of the pipe pile. The box-type transformer oil tank and cable platform are respectively located on the left and right sides below the cantilever platform beam.

[0007] The box-type transformer oil pool is fixed on the pipe pile through the oil tank joist, and the box-type transformer oil pool is welded to the cantilever platform beam through the connecting angle steel; the box-type transformer oil pool includes two symmetrically arranged detachable sub-oil pools, and the two sub-oil pools are connected by a flexible connection;

[0008] The cable platform includes a high-voltage cable box transformer bracket, a low-voltage cable box transformer bracket and a cable second-layer grid. The high-voltage cable box transformer bracket and the low-voltage cable box transformer bracket are fixed side by side below the cantilever platform beam. The cable second-layer grid is fixed on the cable support bracket. The cable support bracket is fixedly connected to the pipe pile through an angle brace. The cable second-layer grid is located below the high-voltage cable box transformer bracket and the low-voltage cable box transformer bracket.

[0009] In the above technical solution, the pipe piles are symmetrically arranged at the bottom of the cantilever platform beam, and the number of the pipe piles is set to be no less than 6.

[0010] In the above technical solution, a clamp is fixed on the pipe pile, and the cantilever platform beam is fixedly connected to the clamp via an oblique brace. The pipe pile, the cantilever platform beam and the oblique brace form a triangular structure.

[0011] In the above technical solution, the clamp includes two half hoops, each half hoop includes an arc portion and a flat plate portion located at both ends of the arc portion and integrated with the arc portion, and each of the flat plate portions is respectively provided with a first threaded hole and a second threaded hole, and a bolt and nut structure passes through the first threaded hole to clamp and fix the two half hoops on the pipe pile, and one end of the diagonal brace is fixed to the second threaded hole through the bolt and nut structure.

[0012] In the above technical solution, an I-shaped reinforcement rib is fixed on the cantilever platform beam to support the prefabricated steel platform.

[0013] In the above technical solution, oil drain valves are provided at the bottom of the two sub-oil pools of the box-type transformer oil pool.

[0014] In the above technical solution, the interfaces of the oil drain valves of the two sub-oil tanks of the box transformer oil tank are connected to the elbow joints through flange butterfly valves, and the elbow joints are connected to the oil drain pipes through wired metal hoses.

[0015] In the above technical solution, a support plate is fixed on the top of the transformer oil pool. There is a gap between the support plate and the bottom of the transformer oil pool and they are connected by angle steel. The support plate is a grid structure with multiple oil leakage holes.

[0016] In the above technical solution, a fire insulation layer is provided on the support plate, and the fire insulation layer is a pebble layer. The diameter of the pebbles in the pebble layer is 50-80 mm.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This new design separates the substation oil sump and cable platform, minimizing interference and effectively preventing oil leaks from damaging cables. This reduces electrical failures and fire risks, extending the life of the equipment, and helps ensure safe system operation. The layered design allows for independent maintenance and overhaul of the substation oil sump and cable platform, facilitating maintenance and overhaul, and improving the overall economic efficiency of the platform.

[0019] 2. The prefabricated steel platform, transformer oil tank, and cable platform of this utility model adopt a layered design to better adapt to extreme working conditions, such as high water levels or large waves. The prefabricated steel platform is fixed to the pipe piles of the prestressed concrete structure with a steel structure, which ensures that it will not be affected by waves under extreme working conditions, ensuring the safety and stability of the equipment.

[0020] 3. The cable platform of this utility model adopts a multi-layer distribution design, which not only improves space utilization but also reduces construction costs;

[0021] 4. The oil pool of the box-type transformer in this utility model includes two symmetrically arranged sub-oil pools. This design not only improves the convenience of transportation, installation and maintenance, but also enhances the safety and adaptability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Shown is a top view of the water-based photovoltaic box-type transformer platform of the present invention.

[0023] Figure 2 Shown is a side view of the water-based photovoltaic box-type transformer platform of the present invention.

[0024] Figure 3 Shown is a schematic diagram of the connection between the cantilever platform beam, pipe piles and diagonal braces of the utility model.

[0025] Figure 4 Shown is a schematic diagram of the box-type transformer oil pool connection of the present utility model.

[0026] Figure 5 Shown is the layout diagram of the second-layer cable grid of the present utility model.

[0027] Figure 6 Shown is a detailed diagram of the oil drain valve of the present utility model.

[0028] Figure 7 Shown is a schematic diagram of the installation of the support plate of the sub-oil tank of the present invention.

[0029] Figure 8 Shown is a detailed view of the clamp of the present utility model.

[0030] In the figure: 1-pipe pile, 101-hoop, 102-arc part, 103-flat plate part, 104-first threaded hole, 105-second threaded hole, 2-prefabricated steel platform, 201-cantilever platform beam, 202-diagonal brace, 203-reinforcement rib, 3-box transformer oil sump, 301-connecting angle steel, 302-tank joist, 303-drain valve, 304-flange butterfly valve, 305-elbow joint, 306-threaded metal hose, 307-support plate, 308-angle steel, 309-fire insulation layer, 310-flexible connection, 4-high-voltage cable box transformer bracket, 5-low-voltage cable box transformer bracket, 6-cable second-layer grid, 7-box transformer device, 8-cable support and hanger, 9-angle brace, 10-steel ladder. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] Example 1

[0033] Reference Figure 1 and Figure 2 , the water photovoltaic box-type transformer platform includes a box-type transformer foundation, a box-type transformer oil pool 3 and a cable platform, wherein the box-type transformer foundation includes a pipe pile 1 and a prefabricated steel platform 2 for installing the box-type transformer device 7, Figure 3 A cantilevered platform beam 201 is fixed to the lower surface of the prefabricated steel platform 2, the bottom of the cantilevered platform beam 201 is fixed to the top of the pipe pile 1, a clamp 101 is fixed on the pipe pile 1, and the cantilevered platform beam 201 is fixedly connected to the clamp 101 through a diagonal brace 202. The pipe pile 1, the cantilevered platform beam 201 and the diagonal brace 202 form a triangular structure, and an "I"-shaped reinforcing rib 203 is fixed on the cantilevered platform beam 201 to support the prefabricated steel platform 2. The pipe piles 1 are evenly distributed at the bottom of the cantilevered platform beam 201.

[0034] Reference Figure 2 The oil tank 3 of the box transformer is fixed on the pipe pile 1 through the oil tank support beam 302. As an example, the oil tank 3 of the box transformer is welded to the cantilever platform beam 201 by connecting the angle steel 301. Figure 2 and Figure 5 The cable platform includes a high-voltage cable box transformer bracket 4, a low-voltage cable box transformer bracket 5 and a cable second-layer grid 6. The high-voltage cable box transformer bracket 4 and the low-voltage cable box transformer bracket 5 are welded to the cantilever platform beam 201. The cable second-layer grid 6 is fixed on the cable support bracket 8. The cable support bracket 8 is fixedly connected to the pipe pile 1 through the angle brace 9.

[0035] Reference Figure 4 、 Figure 6The transformer oil pool 3 includes two symmetrically arranged detachable sub-oil pools, and an oil drain valve 303 is provided at the bottom of the two sub-oil pools. The two sub-oil pools are connected by a soft connection 310. This design facilitates the processing of the transformer oil pool 3, such as galvanizing and other operations.

[0036] Waterborne photovoltaic box-type transformer platforms usually need to be transported by ship or floating crane. The box-type transformer oil pool 3 is set as two symmetrical and detachable sub-oil pools, which can be split into smaller parts for transportation, thereby reducing the difficulty and cost of transportation. During the installation of the water platform, the detachable box-type transformer oil pool 3 can be flexibly assembled according to the site conditions. For example, after the main body of the platform is installed, the oil pool is assembled and installed, avoiding the positioning difficulties and space limitations that may be encountered during the installation of large integrated oil pools; at the same time, it is convenient for maintenance and replacement. When a sub-oil pool of the box-type transformer oil pool 3 needs to be replaced due to long-term use or accidental damage, the detachable design makes the replacement process simpler and faster. In the water environment, the main function of the box-type transformer oil pool 3 is to prevent transformer oil from leaking into the water body and causing environmental pollution. The design of two detachable sub-oil pools can quickly isolate the damaged area when a sub-oil pool is damaged to prevent further leakage of oil. The detachable design allows the connection parts of the oil pool to be strictly inspected and reinforced during the installation process, thereby improving the structural stability of the entire box-type transformer oil pool system. Further, refer to Figure 6 The interface of the oil drain valve 303 is connected to the elbow joint 305 through a flange butterfly valve 304, and the elbow joint 305 is connected to the oil drain pipeline through a wired metal hose 306.

[0037] Example 2

[0038] Based on Example 1, the pipe pile 1 is a prestressed high-strength concrete pipe pile. The pipe pile 1 is filled with micro-expansive concrete. The pipe pile concrete is made of sulfate-resistant cement or ordinary Portland cement with a tricalcium aluminate content of not more than 5%. The end plate of the pipe pile 1 is treated with epoxy zinc-rich primer, epoxy micaceous iron intermediate paint, and acrylic polyurethane topcoat for corrosion protection. The pile top elevation is 7.102m, and the number of the pipe piles 1 is not less than 6. Figure 8 The hoop 101 includes two half hoops, each half hoop includes an arc portion 102 and a flat plate portion 103 located at both ends of the arc portion 102 and integrally formed with the arc portion 102. A first threaded hole 104 and a second threaded hole 105 are respectively provided on each of the flat plate portions 103. A bolt and nut structure passes through the first threaded hole 104 to fasten the two half hoops to the pipe pile 1, and the diagonal brace 202 is fixed to the second threaded hole 105 by the bolt and nut structure.

[0039] Furthermore, the prefabricated steel platform 2 adopts a steel structure frame. To facilitate maintenance, a steel ladder 10 is set on one side of the prefabricated steel platform 2, and the steel ladder 10 is sandblasted and rust-removed.

[0040] Example 3

[0041] Reference Figure 7 A support plate 307 is fixed to the top of the transformer oil pool 3. A gap exists between the support plate 307 and the bottom of the transformer oil pool 3, and the support plate 307 is connected to the bottom of the transformer oil pool 3 by an angle steel 308. The support plate 307 is a grating structure with multiple oil leakage holes to facilitate the flow of leaked oil into the transformer oil pool 3. The support plate 307 can isolate solid matter above the support plate 307. Leaked oil generated by the transformer device 7 can flow through the oil leakage holes to the bottom of the support plate 307, thereby achieving solid-liquid separation within the transformer oil pool 3, making it easier for operators to clean up solid and liquid matter separately.

[0042] Furthermore, a fire insulation layer 309 is provided on the support plate 307. The fire insulation layer 309 is a pebble layer. The pebble layer can isolate the leaked oil from the box transformer device 7. The diameter of the pebbles in the pebble layer is 50-80 mm, and the thickness of the pebble layer is 250 mm. In addition, since the support plate 307 is provided in this embodiment, the fire insulation layer 309 is located above the support plate 307, and the leaked oil is located below the support plate 307. After the two are separated, the fire insulation effect of the fire insulation layer 309 will be further improved.

[0043] Furthermore, the steel structures in all embodiments are anti-corrosion treated by hot-dip galvanizing, and local damaged areas are repaired by cold-spray zinc.

[0044] For ease of explanation, spatial relative terms such as "upper", "lower", "left", and "right" are used in the embodiments to illustrate the relationship between one element or feature shown in the figures and another element or feature. It should be understood that, in addition to the orientation shown in the figures, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "above" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0045] Moreover, relational terms such as “first” and “second” are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any actual relationship or order between these components.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A water-based photovoltaic box-type transformer platform, characterized in that: It includes the box-type transformer foundation, box-type transformer oil pool and cable platform, including: The box-type transformer foundation includes pipe piles and a prefabricated steel platform for installing the box-type transformer device. A cantilever platform beam is fixed to the lower surface of the prefabricated steel platform. The bottom of the cantilever platform beam is fixed to the top of the pipe pile. The box-type transformer oil tank and cable platform are respectively located on the left and right sides below the cantilever platform beam. The box-type transformer oil pool is fixed on the pipe pile through the oil tank joist, and the box-type transformer oil pool is welded to the cantilever platform beam through the connecting angle steel; the box-type transformer oil pool includes two symmetrically arranged detachable sub-oil pools, and the two sub-oil pools are connected by a flexible connection; The cable platform includes a high-voltage cable box transformer bracket, a low-voltage cable box transformer bracket and a cable second-layer grid. The high-voltage cable box transformer bracket and the low-voltage cable box transformer bracket are fixed side by side below the cantilever platform beam. The cable second-layer grid is fixed on the cable support bracket. The cable support bracket is fixedly connected to the pipe pile through an angle brace. The cable second-layer grid is located below the high-voltage cable box transformer bracket and the low-voltage cable box transformer bracket.

2. The waterborne photovoltaic box-type transformer platform according to claim 1, characterized in that: The pipe piles are symmetrically arranged at the bottom of the cantilever platform beam, and the number of the pipe piles is set to be no less than 6.

3. The waterborne photovoltaic box-type transformer platform according to claim 1, characterized in that: A clamp is fixed on the pipe pile, and the cantilever platform beam is fixedly connected to the clamp via an oblique brace. The pipe pile, the cantilever platform beam and the oblique brace form a triangular structure.

4. The waterborne photovoltaic box-type transformer platform according to claim 3, characterized in that: The clamp includes two half hoops, each half hoop includes an arc portion and a flat plate portion located at both ends of the arc portion and integrated with the arc portion, each of the flat plate portions is respectively provided with a first threaded hole and a second threaded hole, a bolt and nut structure passes through the first threaded hole to clamp and fix the two half hoops on the pipe pile, and one end of the diagonal brace is fixed to the second threaded hole by the bolt and nut structure.

5. The waterborne photovoltaic box-type transformer platform according to claim 1, characterized in that: An "I"-shaped reinforcement rib is fixed on the cantilever platform beam to support the prefabricated steel platform.

6. The waterborne photovoltaic box-type transformer platform according to claim 1, characterized in that: Oil drain valves are provided at the bottom of the two sub-oil pools of the box-type transformer oil pool.

7. The waterborne photovoltaic box-type transformer platform according to claim 6, characterized in that: The interfaces of the oil drain valves of the two sub-oil pools of the box-type transformer oil pool are connected to the elbow joints through flange butterfly valves, and the elbow joints are connected to the oil drain pipes through wired metal hoses.

8. The waterborne photovoltaic box-type transformer platform according to claim 1, characterized in that: A support plate is fixed on the top of the transformer oil pool. There is a gap between the support plate and the bottom of the transformer oil pool and they are connected by angle steel. The support plate is a grid structure with multiple oil leakage holes.

9. The waterborne photovoltaic box-type transformer platform according to claim 8, characterized in that: A fire insulation layer is provided on the support plate, and the fire insulation layer is a pebble layer.

10. The waterborne photovoltaic box-type transformer platform according to claim 9, characterized in that: The diameter of the pebbles in the pebble layer is 50-80 mm.

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