Transformer structure
The DC transformer structure with its upper and lower layers solves the problems of low power density and large footprint in existing technologies, achieving efficient space utilization and reduced construction costs, and is suitable for DC transformer devices.
Patent Information
- Application Number
- CN202520203093.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-02-10
AI Technical Summary
Existing DC transformer devices have low internal power density and large footprint due to their flat placement. The cost of container manufacturing and civil construction is high, and they cannot be assembled and transported as a whole, which increases the difficulty and cost of on-site construction.
The design adopts a two-layer structure, with high-voltage and low-voltage layers arranged in layers. The low-voltage support frame is separated by insulators, and the power modules are electrically connected to the copper busbars and busbars. This optimizes the spatial layout, realizes electrical connection between the upper and lower layers, and reduces volume and floor space.
It increases power density, reduces floor space and construction costs, facilitates on-site installation and layout, and lowers the cost of container and civil engineering construction.
Smart Images
Figure CN223941619U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of DC transformer technology, and in particular to a transformer structure. Background Technology
[0002] With the development of DC technology, DC transformers, as an important DC device, have been widely used in practical DC engineering. Existing DC transformer devices, due to the large number of internal power components, require consideration of heat exchange and ease of component replacement. Conventional designs involve the DC transformer being laid flat, which doesn't effectively utilize the vertical space of the container, resulting in lower internal power density and a large footprint for the entire DC transformer device. This leads to higher manufacturing costs for the accompanying container, as well as a large construction area and high construction costs. Furthermore, the large size of the container prevents it from being transported as a single assembly, increasing shipping costs. The entire container requires on-site welding and assembly of the internal power components, necessitating a large number of engineers for on-site assembly and debugging, increasing on-site construction difficulty and costs. Utility Model Content
[0003] To address the shortcomings of existing technologies, this utility model provides a transformer structure to solve the technical problems of existing DC transformers being laid flat, not being effectively utilized in the height direction of the container, having low internal power density, resulting in a large footprint for the entire DC transformer device, high manufacturing cost of the container body, large construction area, and high construction cost.
[0004] The present invention adopts the following technical solution.
[0005] A transformer structure includes: an AC transformer, a low-voltage support frame, an inlet pipe, an outlet pipe, a power module, a high-voltage diode valve string, and three sets of valve groups connected in series. The inlet and outlet pipes are both connected to the power module and the high-voltage diode valve string. The three sets of valve groups have identical structures. Each valve group includes a first copper busbar, a second copper busbar, a first laminated busbar, a second laminated busbar, a third laminated busbar, a first supporting capacitor, and a second supporting capacitor. The low-voltage DC side of the transformer structure is electrically connected to the first and second copper busbars. The power module is electrically connected to the first and second copper busbars. The first and second copper busbars are electrically connected to the first laminated busbar. The power module is electrically connected to the third, fourth, and fifth copper busbars. The sixth copper busbar and the fifth copper busbar pass through the Hall current sensor. The fifth copper busbar is electrically connected to the AC transformer. The AC transformer is electrically connected to the tenth and twelfth copper busbars. The tenth copper busbar is electrically connected to the ninth copper busbar. The twelfth copper busbar is electrically connected to the eleventh copper busbar. The ninth and eleventh copper busbars are both electrically connected to the high-voltage diode valve series. The high-voltage diode valve series is electrically connected to the fifteenth and sixteenth copper busbars. The fifteenth copper busbar is electrically connected to the fourteenth copper busbar. The sixteenth copper busbar is electrically connected to the thirteenth copper busbar. The fourteenth and thirteenth copper busbars are both connected to the third stacked busbar. The high-voltage diode valve series has two sets of intermediate components. The two sets of intermediate components are electrically connected to the twentieth and twenty-first copper busbars, respectively.
[0006] As an improvement, the first stacked busbar is connected in parallel with two first supporting capacitors.
[0007] As an improvement, the transformer structure is divided into a high-voltage layer and a low-voltage layer. The low-voltage support frame uses four insulators to separate the high-voltage layer and the low-voltage layer into layers arranged vertically.
[0008] As an improvement, the AC side of the power module is connected to the third copper busbar via a second laminated busbar.
[0009] As an improvement, four resonant capacitors are connected in parallel to the second stacked busbar.
[0010] As an improvement, the third stacked busbar is connected in parallel with two second support capacitors.
[0011] As an improvement, both the first and second copper busbars are electrically connected to the external incoming line.
[0012] As an improvement, the intermediate components include the seventeenth, eighteenth, and nineteenth copper busbars, which are connected in series.
[0013] As an improvement, the 20th and 21st copper busbars are electrically connected to the external outgoing lines.
[0014] As an improvement, the fifth copper busbar is electrically connected to the AC transformer via the seventh and eighth copper busbars.
[0015] The beneficial effects of this utility model are as follows: compared with the prior art, this structure is a two-layer design, with high voltage on the upper layer and low voltage on the lower layer; the low voltage side of the lower layer receives the line, which is stepped up by the adjacent AC transformer and then directly returns to the high voltage side of the upper layer, and then exits from the high voltage side. This structure has a reasonable spatial layout, which can reduce the overall volume and the floor area, facilitate on-site installation and layout, make effective use of the height of the container, have high internal power density, and the entire DC transformer device occupies a small area. The container body used in conjunction with it has low manufacturing cost, and the civil construction occupies a small area and has low construction cost. Attached Figure Description
[0016] Figure 1 This is a front view schematic diagram of a transformer structure provided in an embodiment of this utility model;
[0017] Figure 2 This is a first perspective view of a transformer structure provided in an embodiment of the present utility model;
[0018] Figure 3 This is a second perspective view of a transformer structure provided in an embodiment of the present invention;
[0019] Figure 4 This is a top view schematic diagram of a transformer structure provided in an embodiment of this utility model;
[0020] Figure 5 This is a partially enlarged schematic diagram of the second copper busbar of a transformer structure provided in an embodiment of this utility model;
[0021] Figure 6 This is a partially enlarged schematic diagram of the eighteenth copper busbar of a transformer structure provided in an embodiment of this utility model.
[0022] In the picture:
[0023] 1. Outlet pipe; 2. Inlet pipe; 3. 20th copper busbar; 4. Power module; 5. 9th copper busbar; 6. 10th copper busbar; 7. 11th copper busbar; 8. 12th copper busbar; 9. Second stacked busbar; 10. First stacked busbar; 11. First copper busbar; 12. Second copper busbar; 13. First supporting capacitor; 14. 17th copper busbar; 15. 18th copper busbar; 16. 19th copper busbar; 17. High-voltage diode valve string; 18. Second supporting capacitor 19. AC transformer; 20. Seventh copper busbar; 21. Eighth copper busbar; 22. Hall current sensor; 23. Fifth copper busbar; 24. Sixth copper busbar; 25. Resonant capacitor; 26. Twenty-first copper busbar; 27. Third copper busbar; 28. Fourth copper busbar; 29. Insulator; 30. Thirteenth copper busbar; 31. Third laminated busbar; 32. Fourteenth copper busbar; 33. Fifteenth copper busbar; 34. Sixteenth copper busbar; 35. Low-voltage support frame. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The embodiments described in this application are merely some embodiments of this utility model, not all embodiments. Based on the spirit of this utility model, other embodiments obtained by those skilled in the art without creative effort are all within the protection scope of this utility model.
[0025] A transformer structure includes: an AC transformer 19, a low-voltage support frame 35, an inlet pipe 2, an outlet pipe 1, a power module 4, a high-voltage diode valve string 17, and three sets of valve groups connected in series. The inlet pipe 2 and outlet pipe 1 are both connected to the power module 4 and the high-voltage diode valve string 17, respectively, and are used to dissipate heat from these components. The three sets of valve groups have identical structures, each including a first copper busbar 11, a second copper busbar 12, a first laminated busbar 10, a second laminated busbar 9, a third laminated busbar 31, a first supporting capacitor 13, and a second supporting capacitor 18. The low-voltage DC side of the transformer structure is electrically connected to the first copper busbar 11 and the second copper busbar 12. The power module 4 is electrically connected to the first copper busbar 11 and the second copper busbar 12. The first copper busbar 11 and the second copper busbar 12 are electrically connected to the first laminated busbar 10. The AC side of the power module 4 is electrically connected to a third copper busbar 27, a fourth copper busbar 28, and a fifth copper busbar 29. Copper busbars 23 and 24, and the fifth copper busbar 23 pass through Hall current sensor 22. The fifth copper busbar 23 is electrically connected to the low-voltage side of AC transformer 19. After AC transformer 19 steps up the voltage, its positive terminal is electrically connected to phase 6 of the tenth copper busbar. After AC transformer 19 steps up the voltage, its negative terminal is electrically connected to phase 8 of the twelfth copper busbar. Phase 6 of the tenth copper busbar is electrically connected to phase 5 of the ninth copper busbar. Phase 8 of the twelfth copper busbar is electrically connected to phase 7 of the eleventh copper busbar. Phases 5 of the ninth copper busbar and 7 of the eleventh copper busbar are both connected to the high-voltage diode valve. The high-voltage diode valve series 17 is electrically connected to the fifteenth copper busbar 33 and the sixteenth copper busbar 34. The fifteenth copper busbar 33 is electrically connected to the fourteenth copper busbar 32. The sixteenth copper busbar 34 is electrically connected to the thirteenth copper busbar 30. The fourteenth copper busbar 32 and the thirteenth copper busbar 30 are both connected to the third stacked busbar 31. The high-voltage diode valve series 17 has two sets of intermediate components. After the two sets of intermediate components are boosted, they are electrically connected to the twentieth copper busbar 3 and the twenty-first copper busbar 26 respectively.
[0026] In a preferred but non-limiting embodiment of this utility model, the first stacked busbar 10 is connected in parallel with two first supporting capacitors 13.
[0027] In a preferred but non-limiting embodiment of this utility model, the transformer structure is divided into a high-voltage layer and a low-voltage layer, and the low-voltage support frame 35 arranges the high-voltage layer and the low-voltage layer in layers by four insulators 29.
[0028] In a preferred but non-limiting embodiment of this utility model, the AC side of the power module 4 is connected to the third copper busbar 27 via the second stacked busbar 9.
[0029] In a preferred but non-limiting embodiment of this utility model, four resonant capacitors 25 are connected in parallel to the second stacked busbar 9.
[0030] In a preferred but non-limiting embodiment of this invention, the third stacked busbar 31 is connected in parallel with two second supporting capacitors 18.
[0031] In a preferred but non-limiting embodiment of this utility model, both the first copper busbar 11 and the second copper busbar 12 are electrically connected to the external incoming line.
[0032] In a preferred but non-limiting embodiment of this utility model, the intermediate component includes a seventeenth copper busbar 14, an eighteenth copper busbar 15, and a nineteenth copper busbar 16, which are connected in series.
[0033] In a preferred but non-limiting embodiment of this utility model, both the twentieth copper busbar 3 and the twenty-first copper busbar 26 are electrically connected to the external outgoing lines.
[0034] In a preferred but non-limiting embodiment of this utility model, the fifth copper busbar 23 is electrically connected to the low-voltage side of the AC transformer 19 through the seventh copper busbar 20 and the eighth copper busbar 21.
[0035] The beneficial effects of this utility model are that, compared with the prior art, this utility model has an upper and lower layer design, with high voltage on the upper layer and low voltage on the lower layer; the low voltage side of the lower layer enters the line, which is stepped up by the adjacent AC transformer and then directly returns to the high voltage side of the upper layer, and then exits from the high voltage side. This utility model has a reasonable spatial layout, which can reduce the overall volume, reduce the footprint, and facilitate on-site installation and layout.
[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this utility model. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the protection scope of the claims of this utility model.
Claims
1. A transformer structure, characterized in that, include: The system consists of an AC transformer (19), a low-voltage support frame (35), an inlet pipe (2), an outlet pipe (1), a power module (4), a high-voltage diode valve string (17), and three sets of valve groups connected in series. The inlet pipe (2) and the outlet pipe (1) are connected to the power module (4) and the high-voltage diode valve string (17). The three sets of valve groups have the same structure. Each valve group includes a first copper busbar (11), a second copper busbar (12), a first laminated busbar (10), a second laminated busbar (9), and a third laminated busbar. (31) First supporting capacitor (13), second supporting capacitor (18), the low-voltage DC side of the transformer structure is electrically connected to the first copper busbar (11) and the second copper busbar (12), the power module (4) is electrically connected to the first copper busbar (11) and the second copper busbar (12), the first copper busbar (11) and the second copper busbar (12) are electrically connected to the first laminated busbar (10), the power module (4) is electrically connected to the third copper busbar (27), the fourth copper busbar (28), the fifth copper busbar (23), the sixth Copper busbar (24), fifth copper busbar (23) passes through Hall current sensor (22), fifth copper busbar (23) is electrically connected to AC transformer (19), AC transformer (19) is electrically connected to tenth copper busbar (6) and twelfth copper busbar (8), tenth copper busbar (6) is electrically connected to ninth copper busbar (5), twelfth copper busbar (8) is electrically connected to eleventh copper busbar (7), ninth copper busbar (5) and eleventh copper busbar (7) are both electrically connected to high voltage diode valve string (17), high voltage diode valve The series (17) is electrically connected to the fifteenth copper busbar (33) and the sixteenth copper busbar (34). The fifteenth copper busbar (33) is electrically connected to the fourteenth copper busbar (32). The sixteenth copper busbar (34) is electrically connected to the thirteenth copper busbar (30). The fourteenth copper busbar (32) and the thirteenth copper busbar (30) are both connected to the third stacked busbar (31). The high-voltage diode valve series (17) has two sets of intermediate components, which are electrically connected to the twentieth copper busbar (3) and the twenty-first copper busbar (26) respectively.
2. The transformer structure according to claim 1, characterized in that: The first stacked busbar (10) is connected in parallel with two first supporting capacitors (13).
3. A transformer structure according to claim 1, characterized in that: The transformer structure is divided into a high-voltage layer and a low-voltage layer. The low-voltage support frame (35) uses four insulators (29) to separate the high-voltage layer and the low-voltage layer into layers.
4. A transformer structure according to claim 1, characterized in that: The AC side of the power module (4) is connected to the third copper busbar (27) via the second stacked busbar (9).
5. A transformer structure according to claim 1, characterized in that: The second stacked busbar (9) is connected in parallel with four resonant capacitors (25).
6. A transformer structure according to claim 1, characterized in that: The third stacked busbar (31) is connected in parallel with the two second support capacitors (18).
7. A transformer structure according to claim 1, characterized in that: Both the first copper busbar (11) and the second copper busbar (12) are electrically connected to the external incoming line.
8. A transformer structure according to claim 1, characterized in that: The intermediate components include the seventeenth copper busbar (14), the eighteenth copper busbar (15), and the nineteenth copper busbar (16), which are connected in series.
9. A transformer structure according to claim 1, characterized in that: Both the 20th copper busbar (3) and the 21st copper busbar (26) are electrically connected to the external outgoing lines.
10. A transformer structure according to claim 1, characterized in that: The fifth copper busbar (23) is electrically connected to the AC transformer (19) through the seventh copper busbar (20) and the eighth copper busbar (21).