Assembled box transformer substation foundation

Abstract

The utility model provides an assembly type box transformer substation foundation, which comprises a bottom plate, first side plates, second side plates, a top frame and a moisture-proof plate body, the first side plates are provided with through holes, the cross sections of the first side plates are C-shaped, the number of the first side plates is two, the openings of the two first side plates are opposite, and the moisture-proof plate body is arranged on the top frame. The second side plates are arranged between the two ends of the two first side plates, the cross sections of the first side plates and the cross sections of the second side plates form a closed rectangle, the bottom plate and the top frame are connected with the bottoms and the tops of the first side plates and the bottoms and the tops of the second side plates respectively, the cross section of the top frame is in an annular shape, and the bottom plate is connected with the top frame. The moisture-proof plate body is connected to the inner side of the top of the top frame. The split mounting type box transformer substation foundation provided by the utility model has a better using effect.

Description

Technical Field

[0001] This utility model belongs to the field of prefabricated substation foundation technology, and relates to a modular prefabricated substation foundation. Background Technology

[0002] The foundation of a prefabricated substation is also commonly known as the building foundation for the inverter and the prefabricated transformer. Steel plates are pre-embedded in the foundation to provide a balanced and stable base for the installation of the inverter and the substation itself. The foundation also contains channels for cables, providing a concealed passage for the output lines from the combiner box to the input lines of the inverter, and for the output lines from the inverter to the low-voltage side input lines of the substation.

[0003] Currently, there are generally two types of prefabricated substation foundations on the market. The first type involves casting the required foundation on-site; the second type involves manufacturing the complete prefabricated substation foundation at the production site, transporting it to the designated location using a crane, and then moving it there. The former has uncontrollable quality, while the latter requires larger equipment for transportation and installation, and can also cause installation difficulties in some site-restricted areas, resulting in poor performance in both types. Utility Model Content

[0004] The purpose of this utility model is to provide a modular transformer substation foundation, which aims to solve the problem of poor performance.

[0005] To solve the above-mentioned technical problems, this utility model provides a modular transformer substation foundation, including a base plate, a first side plate, a second side plate, a top frame, and a moisture-proof board. The first side plate has a through opening, and the cross-section of the first side plate is C-shaped. There are two first side plates, and the openings of the two first side plates face each other. The two ends of the two first side plates are connected to the second side plates. The cross-sections of all the first side plates and the second side plates form a closed rectangle. The base plate and the top frame are respectively connected to the bottom and top of all the first side plates and the second side plates. The cross-section of the top frame is annular, and the moisture-proof board is connected to the inner side of the top of the top frame.

[0006] The present invention is further configured such that a first slot is provided on the top of the base plate, the bottom of the first side plate and the second side plate are both located in the first slot, and a second slot is provided on the bottom of the top frame, the top of the first side plate and the second side plate are both located in the second slot.

[0007] The present invention is further configured such that there are two second side plates, the cross-section of the second side plate is an isosceles trapezoid, and the upper base of the isosceles trapezoid is located on the inner side and the lower base is located on the outer side. The edges at both ends of the first side plate are inclined, and the edges of the first side plate and the second side plate are in face-to-face contact.

[0008] The present invention is further configured such that the edge of the first side plate is provided with a first hole, the edge of the second side plate is provided with a second hole communicating with the first hole, and the invention also includes a positioning bolt and a positioning nut for fixing the first side plate and the second side plate. Two washers are sleeved on the positioning bolt, and the positioning bolt passes through the first hole and the second hole. Both the first hole and the second hole are countersunk holes.

[0009] The present invention is further configured such that a temporary hole is vertically provided at the top of both the first side plate and the second side plate, and a temporary rod that cooperates with the temporary hole is vertically provided at the bottom of the top frame.

[0010] The present invention is further configured such that a grit chamber with an upward-opening cover is provided at the bottom of the base plate, a first mesh body matching the shape of the opening of the grit chamber is provided at the top of the grit chamber, and an outlet is provided on the side of the grit chamber.

[0011] The present invention is further configured such that a drying hole is horizontally opened on the side of the top frame, the drying hole is frustoconical, and the diameter of the inner side of the drying hole is smaller than the diameter of the outer side. A second mesh is provided on the inner side of the drying hole, and a third mesh is provided on the outer side. The second mesh and the third mesh respectively cover the two ends of the drying hole.

[0012] The present invention is further configured such that a positioning ring is fixedly provided on the top of the top frame, and the projection of the positioning ring in the vertical direction is located within the projection of the top frame in the vertical direction;

[0013] It also includes a grounding component, the top of which is connected to the positioning ring, the middle part is located inside the top frame, and the bottom part is located outside the top frame or is flush with the outside of the top frame.

[0014] The present invention is further configured such that the inner wall of the second side plate is provided with a plurality of pre-embedded plates, and the pre-embedded plates are provided with threaded holes.

[0015] The present invention is further configured such that a plurality of moisture-proof boards are arranged in parallel, one side of each moisture-proof board has a mating groove, and the other side has a mating strip that mates with the mating groove. Two adjacent moisture-proof boards are connected by the mating strip and the mating groove. A support groove is provided on the inner side of the top of the top frame. Both ends of all moisture-proof boards overlap the inner wall of the support groove, and the outer side of the moisture-proof boards located at the edge overlaps the inner wall of the support groove.

[0016] Compared with existing technologies, this utility model provides a modular transformer substation foundation. Firstly, the base plate, top frame, first side plate, second side plate, and moisture-proof board are all manufactured (or purchased directly) at an external site. Then, they are transferred to the site where they are needed in parts and assembled on-site. During assembly, the base plate is first transferred or hoisted (even with hoisting equipment, the lightweight and small size of the components reduces the requirements for hoisting machinery, making it easier to use and less demanding on the site) to the designated position. Then, the first and second side plates are installed in their designated positions on the base plate. Next, the top frame is placed on top of the first and second side plates. Finally, the moisture-proof board is placed in its designated position on the top frame, thus forming a rectangular transformer substation foundation. In actual use, grouting or applying concrete to all joints is required to improve waterproofing and structural strength. The through-hole is for use with cable conduits, allowing cables to pass through the transformer substation foundation.

[0017] Since the components in the transformer substation foundation of this application are all produced in the factory as individual parts, the quality is relatively controllable. Secondly, the transfer, transportation and assembly of the components are simpler because the components are lightweight and small in size, thus requiring less space and making the actual operation simpler.

[0018] The moisture-proof board is preferably made of lightweight concrete (standard part), which can not only prevent moisture and ensure the safety inside the transformer, but also facilitate the drilling of holes for cables to pass through. Different transformers require different holes, so the moisture-proof board made of lightweight concrete is convenient for workers to drill holes on site and open manholes, so that workers can enter the foundation for maintenance, etc. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 ;

[0020] Figure 2 yes Figure 1 Enlarged view of section A;

[0021] Figure 3 This is a schematic diagram of the structure of this utility model. Figure 2 ;

[0022] Figure 4 yes Figure 3 Enlarged view of section B;

[0023] Figure 5 This is a cross-sectional view of the present invention. Figure 1 ;

[0024] Figure 6 yes Figure 5 Enlarged view of section C;

[0025] Figure 7 This is a cross-sectional view of the present invention. Figure 2 ;

[0026] Figure 8 yes Figure 7 Enlarged view of section D;

[0027] Figure 9 This is an exploded view of this utility model;

[0028] Figure 10 This is a schematic diagram of the base plate in this utility model;

[0029] Figure 11 This is a schematic diagram of the top frame in this utility model. Figure 1 ;

[0030] Figure 12 This is a schematic diagram of the top frame in this utility model. Figure 2 .

[0031] The components are as follows: 1. Base plate; 2. First side plate; 3. Second side plate; 4. Top frame; 5. Moisture-proof board; 6. Through-hole; 7. First slot; 8. Second slot; 9. First hole; 10. Second hole; 11. Positioning bolt; 12. Positioning nut; 13. Washer; 14. Provisional hole; 15. Sedimentation tank; 16. First mesh; 17. Outlet; 18. Drying hole; 19. Second mesh; 20. Third mesh; 21. Positioning ring; 22. Grounding component; 23. Embedded plate; 24. Threaded hole; 25. Support groove. Detailed Implementation

[0032] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the modular transformer substation foundation proposed by this utility model. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, used only to facilitate and clarify the illustration of the embodiments of this utility model. The same or similar reference numerals in the drawings represent the same or similar components.

[0033] A type of prefabricated transformer foundation, such as Figures 1 to 12As shown, the system includes a base plate 1, a first side plate 2, a second side plate 3, a top frame 4, and a moisture-proof board body 5. The first side plate 2 has a through-hole 6. The cross-section of the first side plate 2 is C-shaped. There are two first side plates 2, and their openings face each other. The two ends of the two first side plates 2 are connected to the second side plates 3. The cross-sections of all the first side plates 2 and second side plates 3 form a closed rectangle. The base plate 1 and the top frame 4 are respectively connected to the bottom and top of all the first side plates 2 and second side plates 3. The cross-section of the top frame 4 is annular. The moisture-proof board body 5 is connected to the inner side of the top of the top frame 4. Corresponding lifting holes can be provided at the top of the base plate 1, the first side plate 2, the second side plate 3, and the top frame 4.

[0034] The top of the base plate 1 is provided with a first slot 7, and the bottoms of the first side plate 2 and the second side plate 3 are both located in the first slot 7. The bottom of the top frame 4 is provided with a second slot 8, and the tops of the first side plate 2 and the second side plate 3 are both located in the second slot 8.

[0035] There are two second side plates 3. The cross-section of the second side plate 3 is an isosceles trapezoid, with the upper base of the isosceles trapezoid located on the inner side and the lower base located on the outer side. The edges at both ends of the first side plate 2 are inclined, and the edges of the first side plate 2 and the second side plate 3 are in face-to-face contact.

[0036] The first side plate 2 has a first hole 9 at an angle on its edge, and the second side plate 3 has a second hole 10 communicating with the first hole 9 on its edge. It also includes a positioning bolt 11 and a positioning nut 12 for fixing the first side plate 2 and the second side plate 3. Two washers 13 are sleeved on the positioning bolt 11. The positioning bolt 11 passes through the first hole 9 and the second hole 10. The first hole 9 and the second hole 10 are countersunk holes.

[0037] The top of both the first side plate 2 and the second side plate 3 are vertically provided with temporary holes 14, and the bottom of the top frame 4 is vertically provided with a temporary rod that mates with the temporary holes 14. A threaded cylinder can be pre-embedded in the temporary hole 14 for hoisting; secondly, the outer wall of the temporary rod is smooth, allowing it to be vertically inserted into the temporary hole 14, thereby improving the relative stability of the top frame 4 with the first side plate 2 and the second side plate 3. Simultaneously, it also improves the relative positional stability of the top frame 4, the first side plate 2, and the second side plate 3 during assembly.

[0038] The bottom of the base plate 1 is provided with a grit chamber 15 with an upward-opening cover. The top of the grit chamber 15 is provided with a first mesh body 16 that matches the shape of the opening of the grit chamber 15. The side of the grit chamber 15 is provided with an outlet 17.

[0039] The top frame 4 has a horizontally opened drying hole 18 on its side. The drying hole 18 is frustum-shaped, and the inner diameter of the drying hole 18 is smaller than the outer diameter. A second mesh 19 is provided on the inner side of the drying hole 18, and a third mesh 20 is provided on the outer side. The second mesh 19 and the third mesh 20 respectively cover the two ends of the drying hole 18.

[0040] A positioning ring 21 is fixedly provided on the top of the top frame 4, and the projection of the positioning ring 21 in the vertical direction is located within the projection of the top frame 4 in the vertical direction.

[0041] It also includes a grounding component 22, the top of which is connected to the positioning ring 21, the middle part is located inside the top frame 4, and the bottom part is located outside the top frame 4 or flush with the outside of the top frame 4.

[0042] The inner wall of the second side plate 3 is provided with a plurality of embedded plates 23, and the embedded plates 23 are provided with threaded holes 24.

[0043] Several moisture-proof boards 5 are arranged in parallel. One side of each moisture-proof board 5 has a mating groove, and the other side has a mating strip that mates with the mating groove. Two adjacent moisture-proof boards 5 are connected by the mating strip and the mating groove. The top of the top frame 4 has a support groove 25 on its inner side. Both ends of all moisture-proof boards 5 overlap the inner wall of the support groove 25, and the outer side of the moisture-proof boards 5 located at the edge overlaps the inner wall of the support groove 25.

[0044] This utility model provides a modular transformer substation foundation. Firstly, the base plate 1, top frame 4, first side plate 2, second side plate 3, and moisture-proof board 5 are all manufactured on-site. Then, they are transferred to the site where they are needed in parts and assembled on-site. During assembly, the base plate 1 is first transferred or hoisted (even with equipment, the lightweight and small size of the components reduces the requirements for hoisting machinery, making it easier to use and less demanding on the site) to the designated position. Then, the first side plate 2 and second side plate 3 are installed on the base plate 1 in their designated positions. Next, the top frame 4 is placed on top of the first side plate 2 and second side plate 3. Finally, the moisture-proof board 5 is placed on the top frame 4 in its designated position, thus forming a rectangular transformer substation foundation. In actual use, grouting or applying concrete to all joints is required to improve waterproofing and structural strength. The through-hole 6 is used in conjunction with cable conduits, allowing cables to pass through the transformer substation foundation.

[0045] Since the components in the transformer substation foundation of this application are all produced in the factory as individual parts, the quality is relatively controllable. Secondly, the transfer, transportation and assembly of the components are simpler because the components are lightweight and small in size, thus requiring less space and making the actual operation simpler.

[0046] The moisture-proof board 5 is preferably made of lightweight concrete (standard part), which can not only prevent moisture and ensure the safety inside the transformer, but also facilitate the drilling of holes for cables to pass through. Different transformers require different holes, so the moisture-proof board 5 made of lightweight concrete is convenient for workers to drill holes on site and open manholes, so that workers can enter the foundation for maintenance, etc.

[0047] During the actual assembly process, firstly, the two first side plates 2 are placed in the two ends of the first slot 7 of the base plate 1. Then, the second side plate 3 is vertically placed into the corresponding position in the first slot 7, ensuring that the edges of the first side plates 2 and 3 are flush. Next, the positioning bolt 11 is taken, passed through the first hole 9, and the positioning nut 12 is inserted into the second hole 10 and threadedly connected to the positioning bolt 11. Concrete will subsequently be injected into the first hole 9 and the second hole 10 to prevent rusting and to prevent external water from seeping into the transformer foundation.

[0048] Next, the top frame 4 is vertically lowered, causing the tops of the first side panel 2 and the second side panel 3 to snap into the second slot 8. At the same time, the temporary rod is located in the temporary hole 14, improving the relative stability of the top frame 4 with the first side panel 2 and the second side panel 3. Finally, the moisture-proof board 5 is placed into the support groove 25, and adjacent moisture-proof boards 5 are interlocked by mating grooves and mating strips. The depth of the mating groove and the thickness of the mating strip are not large. Therefore, in actual operation, the moisture-proof boards 5 can be placed into the support groove 25 one by one, and then the moisture-proof boards 5 can be moved horizontally. In this way, the gap between the outer side of the last moisture-proof board 5 and the support groove 25 is larger, but all the moisture-proof boards 5 can still cover the opening at the top of the entire top frame 4.

[0049] After the base plate 1, first side plate 2, second side plate 3, top frame 4, and moisture-proof board 5 (preferably ALC) are all placed, cement mortar is injected into the first slot 7, the second slot 8, the connection between the first side plate 2 and the second side plate 3, between adjacent moisture-proof boards 5, and between the moisture-proof board 5 and the support groove 25. Dry mortar should be used in the second slot 8 to prevent it from falling out. Finally, the bottom of the transformer substation is welded to the positioning ring 21 (preferably a U-shaped channel steel with its opening facing downwards), thus completing the connection between the transformer substation foundation and the transformer substation. The positioning ring 21 is grounded through the grounding component 22.

[0050] The embedded plate 23 is pre-embedded within the second side plate 3, allowing for the subsequent connection of cable supports to the foundation's cables. The connection between the embedded plate 23 and the cable supports can be achieved through welding or by threading bolts through the cable supports and connecting them to the threaded holes 24. Furthermore, during the pre-embedding of the embedded plate 23, a support rod can be threaded into the threaded holes 24 (this rod will detach from the embedded plate 23 after use). The support rod then supports the position of the embedded plate 23 before grouting, thus integrating the embedded plate 23 with the second side plate 3 and preventing mortar from entering the threaded holes 24.

[0051] In subsequent use, if water seeps into the foundation or drainage from the cable trenches on both sides of the foundation enters the foundation, the water can be collected in the sedimentation tank 15 and discharged outwards through the outlet 17. In practical use, it is preferable to connect a pipe to the outlet 17 to guide the water in the sedimentation tank 15 into the municipal pipeline. It is also preferable to install an automatically opening one-way valve at the outlet 17 to block moisture from the municipal pipeline. Simultaneously, the first mesh 16 prevents impurities from entering the pipeline outside the outlet 17, ensuring normal operation. Furthermore, the drying hole 18, the second mesh 19, and the third mesh 20 are all above ground level, allowing water in the foundation to evaporate through the drying hole 18, thus ensuring the foundation remains dry. The second mesh 19 and the third mesh 20 also prevent rodents and insects from entering the foundation, and the small opening at the inner end of the drying hole 18 also provides some barrier function. Furthermore, since the drying hole 18 is frustum-shaped, its bottom is sloping, which can better prevent external rainwater from flowing into the foundation.

[0052] In another embodiment, the drying hole 18 is inclined, with its top communicating with the interior of the foundation and its bottom communicating with the exterior.

[0053] It should also be noted that all terms such as "set up" and similar descriptive words in this application (especially the specification) indicate that two structures have or exist a connection relationship. However, the specific means by which the two are connected are not limited in detail, and are usually conventional connection methods. That is, the means should be understood as prior art and do not need to be elaborated. For example, "m is set up with n" only indicates that structure m has structure n, and whether the two are connected by welding, riveting, adhesive, or integral molding is within the scope of protection of this application. Similarly, "x is rotatably set up with y" only indicates that y and x can rotate relative to each other, and whether the two are connected by a bearing, or whether y directly passes through x and is rotatably connected to x, or other feasible methods, are all within the scope of protection of this application.

[0054] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A prefabricated transformer substation foundation, characterized in that, The device includes a base plate (1), a first side plate (2), a second side plate (3), a top frame (4), and a moisture-proof board body (5). The first side plate (2) has a through-hole (6). The cross-section of the first side plate (2) is C-shaped. There are two first side plates (2), and the openings of the two first side plates (2) face each other. The two ends of the two first side plates (2) are connected to the second side plate (3). The cross-sections of all the first side plates (2) and the second side plates (3) form a closed rectangle. The base plate (1) and the top frame (4) are respectively connected to the bottom and top of all the first side plates (2) and the second side plates (3). The cross-section of the top frame (4) is annular. The moisture-proof board body (5) is connected to the inner side of the top of the top frame (4).

2. The prefabricated substation foundation according to claim 1, characterized in that, The bottom plate (1) has a first slot (7) at the top, and the bottoms of the first side plate (2) and the second side plate (3) are both located in the first slot (7). The bottom of the top frame (4) has a second slot (8), and the tops of the first side plate (2) and the second side plate (3) are both located in the second slot (8).

3. The prefabricated substation foundation according to claim 1, characterized in that, There are two second side plates (3). The cross-section of the second side plate (3) is an isosceles trapezoid, with the upper base of the isosceles trapezoid located on the inner side and the lower base located on the outer side. The edges of both ends of the first side plate (2) are inclined, and the edges of the first side plate (2) and the second side plate (3) are in face-to-face contact.

4. The prefabricated substation foundation according to claim 3, characterized in that, The first side plate (2) has a first hole (9) at an angle on its edge, and the second side plate (3) has a second hole (10) at its edge that communicates with the first hole (9). It also includes a positioning bolt (11) and a positioning nut (12) for fixing the first side plate (2) and the second side plate (3). Two washers (13) are fitted on the positioning bolt (11). The positioning bolt (11) passes through the first hole (9) and the second hole (10). Both the first hole (9) and the second hole (10) are countersunk holes.

5. The prefabricated substation foundation according to claim 1, characterized in that, The top of the first side plate (2) and the second side plate (3) are both vertically provided with temporary holes (14), and the bottom of the top frame (4) is vertically provided with a temporary rod that cooperates with the temporary holes (14).

6. The prefabricated substation foundation according to claim 1, characterized in that, The bottom of the base plate (1) is provided with a grit chamber (15) with an upward-opening cover. The top of the grit chamber (15) is provided with a first mesh (16) that matches the shape of the opening of the grit chamber (15). The side of the grit chamber (15) is provided with an outlet (17).

7. The prefabricated substation foundation according to claim 6, characterized in that, The top frame (4) has a horizontally opened drying hole (18) on its side. The drying hole (18) is frustum-shaped, and the inner diameter of the drying hole (18) is smaller than the outer diameter. A second mesh (19) is provided on the inner side of the drying hole (18), and a third mesh (20) is provided on the outer side. The second mesh (19) and the third mesh (20) respectively cover the two ends of the drying hole (18).

8. The prefabricated substation foundation according to claim 1, characterized in that, A positioning ring (21) is fixedly provided on the top of the top frame (4), and the projection of the positioning ring (21) in the vertical direction is located within the projection of the top frame (4) in the vertical direction. It also includes a grounding component (22), the top of which is connected to the positioning ring (21), the middle part is located inside the top frame (4), and the bottom part is located outside the top frame (4) or flush with the outside of the top frame (4).

9. A prefabricated substation foundation according to claim 1, characterized in that, The inner wall of the second side plate (3) is provided with a plurality of embedded plates (23), and the embedded plates (23) are provided with threaded holes (24).

10. A prefabricated substation foundation according to claim 1, characterized in that, Several moisture-proof boards (5) are arranged in parallel. One side of each moisture-proof board (5) has a mating groove, and the other side has a mating strip that mates with the mating groove. Two adjacent moisture-proof boards (5) are connected by the mating strip and the mating groove. The top of the top frame (4) has a support groove (25) on its inner side. Both ends of all moisture-proof boards (5) overlap the inner wall of the support groove (25), and the outer side of the moisture-proof board (5) located at the edge overlaps the inner wall of the support groove (25).

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