An assembled modular box transformer steel platform

Abstract

The utility model discloses an assembled modular box transformer steel platform, four prefabricated assembled modules including first module, second module, third module and fourth module, and the assembled module all includes frame and panel, and the frame is constituted by H type steel or H steel, and the panel is steel grating or patterned steel plate, and is fixed on the frame through welding or bolt, and the third module and fourth module are all spliced between the first module and second module through first beam splicing joint and second beam splicing joint and form integral steel platform, and the frame of first module and second module rests on the top of support pile, and the fourth module is installed box transformer on the upper side of one end of platform inner side, and is equipped with box transformer oil pool below, and the fourth module width is not less than box transformer width, and the length is the sum of box transformer length and the width of short direction corridor reservation, and the platform is quickly spliced on the scene through factory prefabricated assembled module, and the construction period is short, and the module integration degree is high, and the installation process is simple and efficient, and the platform stability is high.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic power station equipment installation technology, specifically to a prefabricated modular box-type substation steel platform. Background Technology

[0002] In the construction of photovoltaic power stations, the equipment platform foundation of the box-type transformer (hereinafter referred to as "box-type transformer") is a key infrastructure. The current mainstream practices include: (1) cast-in-place steel beam concrete raft foundation or independent foundation + thick plate platform. This method requires on-site concrete pouring, and after the concrete is poured, it needs to be cured for 28 days. There are problems such as long construction period, great influence of weather, and significant differences in construction quality due to human factors; (2) Fishery-solar complementary projects usually adopt pipe pile foundation + steel structure platform. This method raises the height of the platform by pipe piles and uses bolted welding to connect steel structure components on site. However, there are defects such as long construction period, large amount of on-site welding work, and difficulty in controlling welding quality. Regardless of whether it is a concrete or steel structure platform, additional facilities such as railings, box-type transformer oil tank, signboard, and stairs need to be installed after construction, resulting in complicated procedures and high engineering complexity. The main problems of the existing technology are: long construction period, low degree of integration, large amount of on-site work leading to low efficiency, and poor platform stability. Utility Model Content

[0003] The purpose of this utility model application is to address the shortcomings of the above-mentioned technology by providing a prefabricated modular prefabricated steel platform for transformer substations. By using prefabricated modules in the factory, it can be quickly assembled on site, resulting in a short construction cycle, high degree of module integration, simple and efficient installation process, and high platform stability.

[0004] To achieve the above objectives, the prefabricated modular prefabricated steel platform provided by this utility model adopts the following technical solution: A prefabricated modular steel platform for a prefabricated substation includes four prefabricated modules: a first module, a second module, a third module, and a fourth module. Each module includes a frame and a panel. The frame is constructed of H-beams or I-beams, and the panel is made of steel grating or checkered steel plate, fixed to the frame by welding or bolts. The first and second modules are parallel and mirror-symmetrical, both being long-direction modules forming a long walkway. The third and fourth modules are short-direction modules forming a short walkway, both connected between the first and second modules via first and second beam splicing nodes to form an integral steel platform. The first and second beam splicing nodes are connected by high-strength bolts. The frames of the first and second modules rest on top of support piles. The fourth module has a prefabricated substation installed above one end of the platform near the inner side, and a substation oil tank below it. The width of the fourth module is not less than the width of the substation, and its length is the sum of the substation length and the width of the reserved short-direction walkway. By adopting this technical solution, prefabricated modular units are manufactured in the factory. On-site, the platform can be built simply by assembling the modular units. This results in a short construction period, a high degree of modular integration, a simple and efficient installation process, and high platform stability.

[0005] Optionally, both the first and second modules' frames include a long main beam, a long side beam, multiple cantilever beams, and multiple secondary beams. The secondary beams are welded between the long main beam and the long side beam. One end of each cantilever beam is welded to the long side beam, and the other end rests on the top of a support pile, extending beyond the support pile into the platform. The long main beam is cut off at each of the cantilever beams, and the cut-off point is welded to the side of the cantilever beam. By adopting this technical solution, the frame has good stability.

[0006] Optionally, the frame of the third module includes a central beam, a short side beam, and multiple secondary beams, with the secondary beams welded between the central beam and the short side beam. This technical solution ensures the frame has good stability.

[0007] Optionally, the frame of the fourth module includes two intermediate beams, one short side beam, and multiple secondary beams. The secondary beams are welded between the short side beams and adjacent intermediate beams, and between two intermediate beams. By adopting this technical solution, the frame has good stability.

[0008] Optionally, the first beam splicing node includes a first end plate, a first extended flange plate, a first extended connecting plate, and a first stiffening plate. There are two first end plates: one welded to the end of the cantilever beam and the other welded to the end of the intermediate beam. There are also two first stiffening plates: one welded to the end of the cantilever beam near the upper flange, and the other welded to the end of the intermediate beam near the upper flange. The first extended flange plate is formed by extending the lower flange of the cantilever beam. One end of the first extended connecting plate is welded to the lower flange of the intermediate beam, and the other end overlaps the first extended flange plate and is connected by high-strength bolts. A portion of the lower flange of the intermediate beam is cut off according to the length of the first extended flange plate to form an overlapping space. The two first end plates are attached and connected by high-strength bolts. This technical solution simplifies the beam splicing process and ensures good stability after splicing.

[0009] Optionally, the second beam splicing node includes a second end plate, a second extended flange plate, a second extended connecting plate, and a second stiffening plate. There are two second end plates: one welded to the outermost secondary beam end of the first or second module, and the other welded to the end of the short-side beam. There are also two second stiffening plates: one welded to the outermost secondary beam end of the first or second module near the upper flange, and the other welded to the end of the short-side beam near the upper flange. The second extended flange plate is formed by extending the lower flange of the outermost secondary beam of the first or second module. One end of the second extended connecting plate is welded to the lower flange of the short-side beam, and the other end overlaps the second extended flange plate and is connected by the high-strength bolts. A portion of the lower flange of the short-side beam is cut off according to the length of the second extended flange plate to form an overlapping space. The two second end plates are attached and connected by the high-strength bolts. This technical solution simplifies the beam splicing process and ensures good stability after splicing.

[0010] Optionally, the prefabricated module is equipped with auxiliary facilities prefabricated in the factory. These facilities include railings, signs, and steel ladder interfaces. The railings are installed along the edge of the platform formed after assembly, and the steel ladder interfaces are located at the outer end of the fourth module near the platform. One end of the steel ladder connects to the steel ladder interface, and the other end connects to the steel ladder foundation. This technical solution further improves the integration of the prefabricated module.

[0011] Optionally, the panel is provided with multiple anti-slip strips. By adopting this technical solution, the anti-slip performance of the panel can be increased.

[0012] Optionally, both the splicing joints of the first beam and the second beam are coated with epoxy zinc-rich primer and polyurethane topcoat. This technical solution provides corrosion protection for the splicing joints.

[0013] Furthermore, the entire prefabricated module is fully covered with a zinc coating using a hot-dip galvanizing process. This technical solution enables the prefabricated module to possess long-lasting and reliable corrosion resistance.

[0014] The beneficial effects achieved by this utility model are: 1. By using prefabricated modular units in the factory, the platform can be built on-site simply by assembling the modular units, resulting in a short installation cycle; 2. The frame, beam splicing nodes, and panels of the prefabricated modules are all manufactured as a whole in the factory, resulting in a high degree of integration; 3. On-site assembly only requires high-strength bolts, eliminating the need for welding, making the installation process simple and efficient; 4. The platform is formed by splicing four prefabricated modules. The number of prefabricated modules is small, and the frame of the prefabricated modules is made of H-beams or I-beams and spliced ​​by high-strength bolts. The platform has high stability after the splicing is completed. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 A schematic cross-sectional view of section A in the middle; Figure 3 for Figure 1 A schematic cross-sectional view of section B in the middle; Figure 4 This is a partial side view of the first beam splicing node of this utility model; Figure 5 This is a partial top view of the first beam splicing node of this utility model; Figure 6 This is a partial side view of the splicing node of the second beam of this utility model; Figure 7 This is a partial top view of the splicing node of the second beam of this utility model; The components are as follows: 1. First Module; 2. Second Module; 3. Third Module; 4. Fourth Module; 51. Long Main Beam; 52. Long Side Beam; 53. Cantilever Beam; 54. Secondary Beam; 55. Middle Beam; 56. Short Side Beam; 6. Support Pile; 7. First Beam Splicing Node; 71. First End Plate; 72. First Outer Flange Plate; 73. First Outer Connecting Plate; 74. First Stiffening Plate; 75. High-Strength Bolt; 8. Second Beam Splicing Node; 81. Second End Plate; 82. Second Outer Flange Plate; 83. Second Outer Connecting Plate; 84. Second Stiffening Plate; 9. Panel; 10. Railing; 11. Transformer Oil Tank; 12. Steel Ladder Interface; 13. Steel Ladder; 14. Steel Ladder Foundation. Detailed Implementation

[0016] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model based on the specific circumstances.

[0018] The following is in conjunction with the appendix Figure 1-7 The present invention will be described in further detail below.

[0019] like Figure 1 As shown, a prefabricated modular steel platform for a prefabricated substation includes four prefabricated modules: a first module 1, a second module 2, a third module 3, and a fourth module 4. Each module includes a frame and a panel 9. The frame is made of H-beams or I-beams, and the panel 9 is made of steel grating or checkered steel plate, which are fixed to the frame by welding or bolts. The first module 1 and the second module 2 are parallel to each other and mirror-symmetrical, both being long-direction modules of the platform, forming a long-direction walkway. The third module 3 and the fourth module 4 are both short-direction modules of the platform, forming a short-direction walkway. They are both spliced ​​between the first module 1 and the second module 2 through a first beam splicing node 7 and a second beam splicing node 8 to form an integral steel platform. The first beam splicing node 7 and the second beam splicing node 8 are both connected by high-strength bolts 75. The frames of the first module 1 and the second module 2 rest on the top of the support piles 6. The substation is installed above the inner end of the fourth module 4, and a substation oil tank 11 is provided below it. The width of the fourth module 4 is not less than the width of the substation, and its length is the sum of the length of the substation and the width of the reserved short-direction walkway.

[0020] like Figure 1 , Figure 2 and Figure 3 As shown, the frames of both the first module 1 and the second module 2 include a long main beam 51, a long side beam 52, multiple cantilever beams 53 and multiple secondary beams 54. The secondary beams 54 are welded between the long main beam 51 and the long side beam 52. One end of the cantilever beam 53 is welded to the long side beam 52, and the other end rests on the top of the support pile 6 and extends beyond the support pile 6 into the platform. The long main beam 51 is cut off at each cantilever beam 53, and the cut-off point is welded to the side of the cantilever beam 53.

[0021] like Figure 1 As shown, the frame of the third module 3 includes a central beam 55, a short side beam 56, and multiple secondary beams 54, with the secondary beams 54 welded between the central beam 55 and the short side beam 56.

[0022] like Figure 1 As shown, the frame of the fourth module 4 includes two intermediate beams 55, one short side beam 56 and multiple secondary beams 54. The secondary beams 54 are welded between the short side beams 56 and the adjacent intermediate beams 55, and the secondary beams 54 are welded between the two intermediate beams 55.

[0023] like Figure 4 , Figure 5 As shown, the first beam splicing node 7 includes a first end plate 71, a first extended flange plate 72, a first extended connecting plate 73, and a first stiffening plate 74. There are two first end plates 71, one welded to the end of the cantilever beam 53 and the other welded to the end of the intermediate beam 55. There are two first stiffening plates 74, one welded to the end of the cantilever beam 53 near the upper flange and the other welded to the end of the intermediate beam 55 near the upper flange. The first extended flange plate 72 is formed by extending the lower flange of the cantilever beam 53. One end of the first extended connecting plate 73 is welded to the lower flange of the intermediate beam 55, and the other end overlaps the first extended flange plate 72 and is connected by high-strength bolts 75. A portion of the lower flange of the intermediate beam 55 is cut off according to the length of the first extended flange plate 72 to form an overlapping space. The two first end plates 71 are attached together and connected by high-strength bolts 75.

[0024] like Figure 6 , Figure 7 As shown, the second beam splicing node 8 includes a second end plate 81, a second extended flange plate 82, a second extended connecting plate 83, and a second stiffening plate 84. There are two second end plates 81, one welded to the end of the outermost secondary beam 54 of the first module 1 or the second module 2, and the other welded to the end of the short side beam 56. There are two second stiffening plates 84, one welded to the end of the outermost secondary beam 54 of the first module 1 or the second module 2 and close to the upper flange, and the other welded to the end of the short side beam 56 and close to the upper flange. The second extended flange plate 82 is formed by extending the lower flange of the outermost secondary beam 54 of the first module 1 or the second module 2. One end of the second extended connecting plate 83 is welded to the lower flange of the short side beam 56, and the other end overlaps the second extended flange plate 82 and is connected by high-strength bolts 75. A portion of the lower flange of the short side beam 56 is cut off according to the length of the second extended flange plate 82 to form an overlapping space. The two second end plates 81 are attached together and connected by high-strength bolts 75.

[0025] The prefabricated modules are equipped with auxiliary facilities in the factory, including railings 10, signs and steel ladder interfaces 12. The railings 10 are set on the edge of the platform formed after splicing. The steel ladder interfaces 12 are set on the fourth module 4 near the outer side of the platform. One end of the steel ladder 13 is connected to the steel ladder interface 12 and the other end is connected to the steel ladder foundation 14.

[0026] Panel 9 has multiple anti-slip strips.

[0027] Epoxy zinc-rich primer and polyurethane topcoat were applied to the splicing joints of the first beam splicing node 7 and the second beam splicing node 8.

[0028] The assembled module is fully covered with a zinc coating using a hot-dip galvanizing process.

[0029] In this embodiment, the main beam 51, the long side beam 52, the cantilever beam 53, the intermediate beam 55, and the short side beam 56 are all made of HW200×200 steel. The main beam 51 and the long side beam 52 are spaced 1.5m apart, which is suitable for operation and maintenance space. The secondary beams 54 are made of HN150×75 steel, and the spacing between each secondary beam 54 is 0.8m. The panel 9 is a 4mm thick patterned steel plate. The first end plate 71 is 20mm thick and has 4×M20 bolt holes, which are connected by 8.8 grade high-strength bolts 75. The second end plate 81 is 16mm thick and has 4×M20 bolt holes, which are connected by 8.8 grade high-strength bolts 75. The prefabricated module is galvanized for corrosion protection, and the zinc coating thickness is ≥85μm.

[0030] In some embodiments, a steel ladder interface 12 (with a pre-embedded steel plate and bolt holes) is provided at one end of the long-direction module, and a cable threading hole is provided at the other end.

[0031] In some embodiments, the platform is formed by splicing together multiple long-direction modules and multiple short-direction modules, with the short-direction modules spliced ​​between the long-direction modules on both sides.

[0032] In some embodiments, the prefabricated module supports subsequent functional expansion, such as adding photovoltaic brackets and energy storage device interfaces.

[0033] It should be noted that the above description of the technical solutions is exemplary, and this specification may be embodied in different forms and should not be construed as limiting it to the technical solutions set forth herein. Rather, providing these descriptions will ensure that the disclosure of this utility model is thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Furthermore, the technical solutions of this utility model are defined only by the scope of the claims.

[0034] For those skilled in the art to which this utility model pertains, several simple deductions or substitutions can be made without departing from the concept of this utility model, and the above structures should all be considered to fall within the protection scope of this utility model.

Claims

1. A prefabricated modular prefabricated steel platform for transformer substations, characterized in that: It includes four prefabricated modules: a first module (1), a second module (2), a third module (3), and a fourth module (4). Each module includes a frame and a panel (9). The frame is made of H-beams or I-beams, and the panel (9) is a steel grating or a patterned steel plate, which is fixed to the frame by welding or bolts. The first module (1) and the second module (2) are parallel to each other and mirror symmetrical. Both are long-direction modules of the platform, forming a long-direction walkway. The third module (3) and the fourth module (4) are short-direction modules of the platform, forming a short-direction walkway. They are spliced ​​between the first module (1) and the second module (2) through the first beam splicing node (7) and the second beam splicing node (8) to form an integral steel platform. The first beam splicing node (7) and the second beam splicing node (8) are connected by high-strength bolts (75). The frames of the first module (1) and the second module (2) are placed on top of the support pile (6); The fourth module (4) is installed above the inner side of the platform with a transformer box installed above it and a transformer box oil tank (11) below it. The width of the fourth module (4) is not less than the width of the transformer box, and the length is the sum of the length of the transformer box and the width of the reserved short-direction walkway.

2. The prefabricated modular prefabricated steel platform according to claim 1, characterized in that: The frames of the first module (1) and the second module (2) both include a long main beam (51), a long side beam (52), multiple cantilever beams (53) and multiple secondary beams (54). The secondary beams (54) are welded between the long main beam (51) and the long side beam (52). One end of the cantilever beam (53) is welded to the long side beam (52), and the other end rests on the top of the support pile (6) and extends into the platform beyond the support pile (6). The long main beam (51) is cut off at each of the cantilever beams (53), and the cut-off point is welded to the side of the cantilever beam (53).

3. The prefabricated modular prefabricated steel platform according to claim 1, characterized in that: The frame of the third module (3) includes a central beam (55), a short side beam (56) and multiple secondary beams (54), the secondary beams (54) being welded between the central beam (55) and the short side beam (56).

4. The prefabricated modular prefabricated steel platform according to claim 1, characterized in that: The frame of the fourth module (4) includes two intermediate beams (55), one short side beam (56) and multiple secondary beams (54). The secondary beams (54) are welded between the short side beams (56) and the adjacent intermediate beams (55), and the secondary beams (54) are welded between the two intermediate beams (55).

5. The prefabricated modular prefabricated steel platform according to claim 1, characterized in that: The first beam splicing node (7) includes a first end plate (71), a first extended flange plate (72), a first extended connecting plate (73), and a first stiffening plate (74); there are two first end plates (71), one welded to the end of the cantilever beam (53) and the other welded to the end of the intermediate beam (55); there are two first stiffening plates (74), one welded to the end of the cantilever beam (53) near the upper flange and the other welded to the end of the intermediate beam (55) near the upper flange; The first extended flange plate (72) is formed by extending the lower flange of the cantilever beam (53). One end of the first extended connecting plate (73) is welded to the lower flange of the intermediate beam (55), and the other end overlaps the first extended flange plate (72) and is connected by the high-strength bolt (75). A portion of the lower flange of the intermediate beam (55) is cut off according to the length of the first extended flange plate (72) to form an overlapping fit space. The two first end plates (71) are attached and connected by the high-strength bolt (75).

6. The prefabricated modular prefabricated steel platform according to claim 1, characterized in that: The second beam splicing node (8) includes a second end plate (81), a second extended flange plate (82), a second extended connecting plate (83), and a second stiffening plate (84); there are two second end plates (81), one welded to the end of the outermost secondary beam (54) of the first module (1) or the second module (2), and the other welded to the end of the short side beam (56); there are two second stiffening plates (84), one welded to the end of the outermost secondary beam (54) of the first module (1) or the second module (2) and close to the upper flange, and the other welded to the end of the short side beam (56). And close to the upper flange; the second extended flange plate (82) is formed by extending the lower flange of the outermost secondary beam (54) of the first module (1) or the second module (2), one end of the second extended connecting plate (83) is welded to the lower flange of the short side beam (56), and the other end overlaps on the second extended flange plate (82) and is connected by the high-strength bolt (75). The lower flange of the short side beam (56) is cut off a portion according to the length of the second extended flange plate (82) to form an overlapping fit space; the two second end plates (81) are attached and connected by the high-strength bolt (75).

7. The prefabricated modular prefabricated steel platform according to claim 1, characterized in that: The prefabricated module is equipped with auxiliary facilities prefabricated in the factory. The auxiliary facilities include railings (10), signs and steel ladder interfaces (12). The railings (10) are set on the edge of the platform formed after splicing. The steel ladder interfaces (12) are set on the fourth module (4) near the outer side of the platform. One end of the steel ladder (13) is connected to the steel ladder interface (12), and the other end is connected to the steel ladder foundation (14).

8. The prefabricated modular prefabricated steel platform according to claim 1, characterized in that: The panel (9) is provided with multiple anti-slip strips.

9. The prefabricated modular prefabricated steel platform according to claim 1, characterized in that: The splicing joints of the first beam splicing node (7) and the second beam splicing node (8) are coated with epoxy zinc-rich primer and polyurethane topcoat.

10. A prefabricated modular prefabricated steel platform according to any one of claims 1-9, characterized in that: The assembled module is fully covered with a zinc coating using a hot-dip galvanizing process.

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