Fishpond ridge photovoltaic support with PHC pipe pile foundation and multi-specification horizontal-row design method

Abstract

The invention relates to a photovoltaic support, in particular to a fishpond ridge photovoltaic support with a PHC pipe pile foundation and a multi-specification horizontal design method.The fishpond ridge photovoltaic support comprises a pipe pile, limiting angle steel is arranged at the top end of the pipe pile, the photovoltaic support is arranged on the inner side of the limiting angle steel, and the photovoltaic support comprises a first stand column and a second stand column which are fixedly connected to the inner side of the limiting angle steel; the first stand column and the second stand column make contact with the pipe pile, the outer side of the pipe pile is sleeved with a first hoop and a second hoop, and the first hoop and the second hoop are fixedly connected with the first stand column and the second stand column. Width limitation of the pond ridge is broken through, front and rear row shielding is eliminated through height difference design of the support, and the width space of the pond ridge is utilized to the maximum; the pond ridge length difference is adapted, the land waste is reduced through the multi-specification support combination, and the arraying capacity is improved; the method is adaptive to the special environment (shallow underground water level and multiple typhoons) of the pond ridge, the foundation and support structure is optimized, and construction convenience and operation stability are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of photovoltaic support, especially to a fish pond dike photovoltaic support based on PHC pipe pile foundation and a multi-specification transverse arrangement design method. BACKGROUND

[0002] With the large-scale development of the domestic photovoltaic industry, the land resources available for the construction of photovoltaic power stations are increasingly limited. The fish-light complementary photovoltaic power station has become an important development direction because it can balance fish farming and photovoltaic power generation. At present, fish-light complementary projects mainly focus on the construction of photovoltaic systems on the water surface of fish ponds, and the land potential of the dike between fish ponds has not been fully tapped. Moreover, the existing photovoltaic support design for the dike has the following core problems: Shading problem: Conventional design needs to reserve the spacing between the front and rear supports through modeling to avoid shadow shading, resulting in low utilization rate of the dike width, especially in the typical dike with a width of 8.5-12 m, the spacing occupies a large amount of effective space; Land waste: The use of small support structures with a uniform specification requires a gap between adjacent supports in the same row. When the length of the dike is fixed, the cumulative gap causes land waste, and the capacity of the array is limited; Poor adaptability: The design is not optimized for the long and narrow shape of the dike, the shallow underground water level, and the frequent occurrence of typhoons, making the foundation construction difficult (e.g., the bored pile is easily affected by the water level), and the support has insufficient wind resistance and stability.

[0003] To solve the above problems, the present application innovates the support structure and arrangement scheme to achieve the dual goals of efficient use of dike land and improvement of photovoltaic capacity. SUMMARY

[0004] The purpose of the present application is to solve the problems of shadow shading, land waste, and poor adaptability in the design of photovoltaic support for the dike.

[0005] The technical solution of the present application is a fish pond dike photovoltaic support based on a PHC pipe pile foundation, which includes a pipe pile. A limit angle steel is arranged at the top end of the pipe pile. A photovoltaic support is arranged on the inner side of the limit angle steel. The photovoltaic support includes a first vertical column and a second vertical column fixedly connected to the inner side of the limit angle steel. The first vertical column and the second vertical column are in contact with the pipe pile. A first clamp and a second clamp are sleeved on the outer side of the pipe pile. The first clamp and the second clamp and the first vertical column and the second vertical column are fixedly connected. A front support rod and a rear support rod are hingedly connected to the two sides of the first clamp.

[0006] Optionally, the top of the first vertical column and the second vertical column is fixedly connected with a diagonal beam. The front support rod and the rear support rod are fixedly connected to the top of the diagonal beam.

[0007] Optionally, the top of the diagonal beam is fixedly connected with a bracket through a bolt. The bracket is fixedly connected with a cross beam on one side through a bolt.

[0008] Optionally, the top of the crossbeam is provided with a photovoltaic module, and the outer side of the photovoltaic module is sleeved with a pressing block.

[0009] Optionally, the inner side of the pressing block is inserted with a bolt, and the bolt is inserted into the inner side of the crossbeam.

[0010] Optionally, the outer side of the bolt is threadedly connected with a special-shaped nut and a lock nut.

[0011] The application also provides a multi-specification horizontal row design method for a fishpond dike photovoltaic support of a PHC pipe pile foundation, and comprises the following steps: The pipe pile is a PHC prestressed high-strength concrete pipe pile selected as a support foundation, and the photovoltaic support is connected with the pipe pile through a first hoop and a second hoop with a stiffener plate; The first vertical column is provided with a 1.15m relative height difference and a 4.51m spacing, and the array azimuth angle is set as 18° south and 18° west, and the inclination angle is set as 18°; The second vertical column is arranged according to the length of the dike, and a 4×32, 4×24, 4×16 or 4×8 horizontal row scheme is selected to arrange the components, and a 0.5m operation and maintenance channel is reserved on the left and right of the photovoltaic single row.

[0012] Optionally, the hoop arc is welded with a 6mm thick stiffener plate with a specification of -20×45×6.

[0013] Optionally, the photovoltaic module is fixed by a combination of a pressing block, a bolt, a special-shaped nut and a lock nut.

[0014] Optionally, the support body is made of Q235B steel, the minimum film thickness of the hot-dip galvanized anti-corrosion layer is not less than 80μm, the stainless steel component is 0Cr18Ni9 austenitic stainless steel, and the bolt strength grade is A2-70.

[0015] In summary, the application comprises at least one of the following beneficial technical effects: Land utilization rate is improved: the 1.15m height difference design eliminates the shielding, and the dike width utilization rate is improved by 30%; the multi-specification horizontal row combination reduces the length direction gap waste, and the overall land utilization rate is improved by more than 25%; Array capacity is increased: under the same dike area, compared with the conventional small support design, the array capacity is improved by 25%~40%; Strong environmental adaptability: the PHC pipe pile foundation is suitable for shallow groundwater level scenes, the special-shaped nut and the lock nut design significantly improve the anti-tornado ability, and the hot-dip galvanized anti-corrosion ensures the service life of the support for 50 years; Convenient construction: the standardized support structure and arrangement scheme do not need complex modeling calculation, and the construction efficiency is improved by 20%.

[0016] In summary, the present application breaks through the width limit of the dike, eliminates the front and rear row shielding through the high difference design of the support, maximizes the use of the dike width space; adapts to the length difference of the dike, reduces land waste through multi-specification support combination, and improves the array capacity; adapts to the special environment of the dike (shallow groundwater level, frequent typhoons), optimizes the foundation and support structure, and ensures the convenience of construction and the stability of operation. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of a fish pond dike photovoltaic support of a PHC pipe pile foundation; Figure 2 is an enlarged view of A part of Figure 1 ; Figure 3 is a layout design drawing of a multi-specification horizontal row design method of a PHC pipe pile foundation fish pond dike photovoltaic support; Figure 4 is a layout schematic view of a multi-specification horizontal row design method of a PHC pipe pile foundation fish pond dike photovoltaic support.

[0018] REFERENCE NUMERALS: 1, pipe pile; 2, first vertical column; 3, second vertical column; 4, limiting angle steel; 5, first hoop; 6, second hoop; 7, front support rod; 8, rear support rod; 9, inclined beam; 10, photovoltaic module; 11, bracket; 12, pressing block; 13, bolt; 14, special-shaped nut; 15, lock nut; 16, cross beam. DETAILED DESCRIPTION

[0019] The technical solutions of the present application will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all embodiments.

[0020] The components of the embodiments of the present application generally described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application.

[0021] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0022] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] Example 1, as Figures 1-4 As shown, a photovoltaic support for a fishpond embankment based on a PHC pipe pile foundation includes a pipe pile 1, which is a PHC prestressed high-strength concrete pipe pile. A limiting angle steel 4 is installed at the top of the pipe pile 1, and a photovoltaic support is installed inside the limiting angle steel 4. The photovoltaic support includes a first column 2 and a second column 3 fixedly connected to the inside of the limiting angle steel 4. Both the first column 2 and the second column 3 are in contact with the pipe pile 1. A first clamp 5 and a second clamp 6 are sleeved on the outside of the pipe pile 1, and a 6mm weld is made at the bend of the first clamp 5 and the second clamp 6. The thick stiffening plate, the first clamp 5 and the second clamp 6 and the first column 2 and the second column 3 are fixedly connected. The first clamp 5 is hinged to the front support rod 7 and the rear support rod 8 on both sides respectively. The top of the first column 2 and the second column 3 is fixedly connected to the inclined beam 9. The front support rod 7 and the rear support rod 8 are fixedly connected to the top of the inclined beam 9. The top of the inclined beam 9 is fixedly connected to the purlin 11 by bolts. The side of the purlin 11 is fixedly connected to the crossbeam 16 by bolts. The top of the crossbeam 16 is equipped with a photovoltaic module 10. The outside of the photovoltaic module 10 is fitted with a pressure block 12. The inside of the pressure block 12 is inserted with a bolt 13. The bolt 13 is inserted into the inside of the crossbeam 16. The outside of the bolt 13 is threaded with a special-shaped nut 14 and a lock nut 15.

[0025] In this embodiment, taking a pond embankment 10m wide and 30m long, with a shallow groundwater level and an average of 1-2 typhoons per year as an example, the implementation steps of the present invention are as follows: Foundation construction: PHC prestressed high-strength concrete pipe piles were driven into the center of the pond embankment, with the piles spaced 4.51m in the same row and 8m in front and behind rows. Support assembly: Q235B cold-bent thin-walled steel is used to make each part of the support, the inclined beam 9, the first vertical column 2 and the second vertical column 3 are hot-dip galvanized with a film thickness of 85 μm, and the first hoop 5 and the second hoop 6 are fixed with the PHC pipe pile 1 after welding the stiffened plate; Arrangement and installation: Since the dike is 30 m long, 4x24 horizontal row assemblies are selected for arrangement, the array azimuth angle is adjusted to 18° south of west, and the inclination angle is adjusted to 18°; the photovoltaic assembly 10 is fixed on the cross beam 16 through the pressing block 12, the bolt 13, the special-shaped nut 14 and the lock nut 15; Operation and maintenance reservation: 0.5 m channels are reserved on the left and right sides of the photovoltaic single column, and the stability and wind resistance of the support are detected after installation.

[0026] After implementation, the photovoltaic array capacity of the dike is increased by 32% compared with the conventional design, the land utilization rate reaches 92%, the support is not loose or settled after the typhoon season, and the power generation efficiency meets the design expectation.

[0027] The application also provides a multi-specification horizontal row design method for a fishpond dike photovoltaic support of a PHC pipe pile foundation, which comprises the following steps: Pipe pile 1: PHC prestressed high-strength concrete pipe pile 1 is selected as the support foundation, and the photovoltaic support is connected with the pipe pile 1 through the first hoop 5 and the second hoop 6 with stiffened plates; First vertical column 2: The front and rear rows of supports are arranged with a relative height difference of 1.15 m, the interval is 4.51 m, the array azimuth angle is 18° south of west, and the inclination angle is 18°; Second vertical column 3: According to the length of the dike, 4x32, 4x24, 4x16 or 4x8 horizontal row schemes are selected to arrange the assemblies, and 0.5 m operation and maintenance channels are reserved on the left and right sides of the photovoltaic single column.

[0028] The hoop arc is welded with a stiffened plate with a thickness of 6 mm and a specification of -20x45x6, the photovoltaic assembly 10 is fixed by combining the pressing block 12, the bolt 13, the special-shaped nut 14 and the lock nut 15, the support body is made of Q235B steel, the minimum film thickness of the hot-dip galvanized anticorrosive layer is not less than 80 μm, the stainless steel component is 0Cr18Ni9 austenitic stainless steel, and the bolt strength grade is A2-70.

[0029] In this embodiment, the application forms a complete solution for the fishpond dike photovoltaic support and arrangement through three-dimensional technical innovation of "foundation optimization - arrangement design - structure reinforcement", and the specific solutions are as follows: Support foundation design adaptation to shallow groundwater level scenarios: In view of the problem of shallow groundwater level of the dike and the difficulty in construction of the cast-in-place pile, a PHC prestressed high-strength concrete pipe pile 1 foundation is selected to replace the traditional cast-in-place pile / independent foundation; the photovoltaic support is connected with the PHC pipe pile 1 through the first hoop 5 and the second hoop 6, and a 6mm thick stiffened plate is welded at the bending arc of the first hoop 5 and the second hoop 6, with the specification being 20x45x6, so as to strengthen the stress strength of the hoop and avoid the sliding settlement of the support due to the deformation of the hoop.

[0030] The arrangement of the front and rear rows of supports is optimized to eliminate the shielding and improve the width utilization rate. Taking an 8.5-12m wide typical dike as an example, the “height difference + spacing + angle optimization” combined scheme is adopted. Height difference design: the rear row of supports is raised by 1.15m relative to the front row, so as to ensure that there is no shadow shielding between the front and rear components during the whole year from 9 to 15 true solar time, and no additional wide spacing needs to be reserved. Spacing control: the spacing between the front and rear rows of supports is reduced to 4.51m, and 4 rows of components are installed transversely, which saves 30% of the width space compared with the conventional design. Angle optimization: the array azimuth angle is set to south by west 18°, and the radiation amount is only reduced by 0.4% compared with the south direction. The inclination angle is set to 18°, and the array surface receives the maximum radiation amount of 1259kWh / ㎡ under this inclination angle, which improves the power generation efficiency and array capacity in the limited space.

[0031] The same dike support arrangement design is adapted to the length difference and reduces waste: According to the different lengths of the dike, four kinds of standardized transverse row component arrangement schemes are adopted to realize “zero waste” in the length direction: Long dike ≥32m: 4x32 transverse arrangement is adopted; Medium-long dike 24-32m: 4x24 transverse arrangement is adopted; Medium-short dike 16-24m: 4x16 transverse arrangement is adopted; Short dike 8-16m: 4x8 transverse arrangement is adopted; Operation and maintenance reservation: a 0.5m wide channel is reserved on the left and right of the photovoltaic single column to facilitate component cleaning and maintenance.

[0032] Support structure strengthening anti-typhoon and corrosion prevention: Material and corrosion prevention: the inclined beam 9, the bracket 11, the first vertical column 2 and the second vertical column 3 are made of Q235B steel, and the hot-dip galvanized anti-corrosion film is greater than or equal to 80μm; the stainless steel components including bolts are made of 0Cr18Ni9 austenitic stainless steel 304, and the bolt strength grade is A2-70. Anti-typhoon design: the assembly connection adopts a combination of "press block 12 + bolt 13 + special-shaped nut 14", which increases the connection contact area; at the same time, a stainless steel lock nut 15 is additionally arranged to avoid bolt loosening caused by wind; the support is designed according to the wind load of 50 years, to ensure the wind stability; Structural details: the middle column fixed support is composed of a first hoop 5, a second hoop 6, a first column 2, a second column 3, a cross beam 16, an inclined beam 9, a front support rod 7 and a rear support rod 8; each group of supports is provided with four cross beams 16, and the cross beam 16 connection parts are arranged staggeredly, to improve the overall stability.

[0033] The above specific embodiments are only optional embodiments of the present application, and based on the technical solutions of the present application and the related inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations on the above specific embodiments.

Claims

1. A photovoltaic support system for fishpond embankments with PHC pipe pile foundations, characterized in that, The system includes a pipe pile (1), with a limiting angle steel (4) at the top of the pipe pile (1). A photovoltaic bracket is provided on the inner side of the limiting angle steel (4). The photovoltaic bracket includes a first column (2) and a second column (3) fixedly connected to the inner side of the limiting angle steel (4). Both the first column (2) and the second column (3) are in contact with the pipe pile (1). A first clamp (5) and a second clamp (6) are sleeved on the outer side of the pipe pile (1). The first clamp (5) and the second clamp (6) and the first column (2) and the second column (3) are fixedly connected. A front support rod (7) and a rear support rod (8) are respectively hinged on both sides of the first clamp (5).

2. A photovoltaic support system for fishpond embankments with PHC pipe pile foundation according to claim 1, characterized in that, The top of the first column (2) and the second column (3) are fixedly connected to the inclined beam (9), and the front support rod (7) and the rear support rod (8) are fixedly connected to the top of the inclined beam (9).

3. A photovoltaic support structure for a fishpond embankment with a PHC pipe pile foundation according to claim 2, characterized in that, The top of the inclined beam (9) is fixedly connected to a support (11) by bolts, and a crossbeam (16) is fixedly connected to one side of the support (11) by bolts.

4. A photovoltaic support system for fishpond embankments with PHC pipe pile foundation according to claim 3, characterized in that, A photovoltaic module (10) is provided on the top of the crossbeam (16), and a pressure block (12) is sleeved on the outside of the photovoltaic module (10).

5. A photovoltaic support structure for a fishpond embankment with a PHC pipe pile foundation according to claim 4, characterized in that, Bolts (13) are inserted into the inner side of the pressure block (12), and the bolts (13) are inserted into the inner side of the crossbeam (16).

6. A photovoltaic support structure for a fishpond embankment with a PHC pipe pile foundation according to claim 5, characterized in that, The bolt (13) is threaded with a shaped nut (14) and a lock nut (15).

7. A multi-specification horizontal arrangement design method for a photovoltaic support system on a fishpond embankment using PHC pipe pile foundation, applied to the photovoltaic support system on a fishpond embankment using PHC pipe pile foundation as described in claim 1, characterized in that... Includes the following steps: Pipe pile (1): PHC prestressed high-strength concrete pipe pile (1) is selected as the support foundation. The photovoltaic support is connected to the pipe pile (1) through the first clamp (5) and the second clamp (6) with stiffening plate. The first column (2) and the front and rear rows of supports are set with a relative height difference of 1.15m, the spacing is set to 4.51m, the array azimuth angle is set to 18° south of west, and the tilt angle is set to 18°. The second column (3) is arranged in a horizontal row of 4×32, 4×24, 4×16 or 4×8 according to the length of the pond embankment. A 0.5m maintenance channel is reserved on the left and right sides of the photovoltaic single row.

8. A method for designing multi-specification horizontal arrangement of photovoltaic support structures for fishpond embankments using PHC pipe pile foundations according to claim 7, characterized in that, A 6mm thick stiffening plate with dimensions of -20×45×6 is welded to the bend of the clamp.

9. A method for designing multi-specification horizontal arrangement of photovoltaic support structures for fishpond embankments using PHC pipe pile foundations according to claim 7, characterized in that, The photovoltaic module (10) is fixed by a combination of pressure block (12), bolt (13), special shaped nut (14), and anti-loosening nut (15).

10. A method for designing multi-specification horizontal arrangement of photovoltaic support structures for fishpond embankments using PHC pipe pile foundations according to claim 7, characterized in that... The main body of the support frame is made of Q235B steel, and the minimum thickness of the hot-dip galvanized anti-corrosion layer is not less than 80μm; the stainless steel components are 0Cr18Ni9 austenitic stainless steel, and the bolt strength grade is A2-70.

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