A multi-combination busbar insulation support device

Abstract

The invention discloses a multi-combination busbar insulation support device, comprising a multi-combination busbar insulation support base, a busbar pressure plate and a limit adjustment block, wherein the busbar pressure plate is fixedly installed on one side of the multi-combination busbar insulation support base, and two groups of limit adjustment blocks are provided, and the two groups of limit adjustment blocks are fixedly plugged into the multi-combination busbar insulation support base by bolts, and a busbar clamp is provided between one side of the outer wall of the multi-combination busbar insulation support base and the busbar pressure plate, and a single group of busbar isolation ribs and a double group of busbar isolation ribs are respectively provided on both sides of the busbar clamp. The invention can be applied to a single-phase busbar in the form of a combined busbar. Due to the increase in the surface area of ​​the busbar and the change in the heat dissipation mode of the busbar, the cross-sectional area of ​​the combined busbar is at least 10% lower than that of a single busbar at the same rated current. By using the limit adjustment block, it can be applied to multiple groups of combined busbars with different row specifications at the same time, which simplifies the design and structure and reduces the cost.

Description

Technical Field

[0001] The invention relates to the technical field of main busbar systems of low-voltage complete electrical appliances, in particular to a multi-combination busbar insulation support device. Background Art

[0002] The main busbar system of low-voltage complete electrical equipment is a primary main circuit transmission system in which the output end of the transformer is directly connected to the low-voltage complete equipment. It undertakes the transmission task of power distribution in the power grid. Its safety and reliability are directly related to the quality of power distribution in the power grid.

[0003] The main busbar system is a key part of low-voltage complete sets of electrical equipment, and the busbar insulation support device is a key component for achieving safe power transmission in the busbar system. Its functions: carrying the rated current under long-term working conditions, carrying the large-capacity electric power generated during long-term working, carrying the impact load generated during short-circuit faults, and carrying the temperature rise generated by the busbar system under long-term working conditions. In traditional designs, traditional busbar clamps are used to connect and tighten with rectangular busbars with prefabricated holes through installation holes. For currents of the same specification, the heat dissipation conditions are poor, and the busbar cross-sectional area is required to be large. The main busbar must have prefabricated support holes and branch busbar lap holes, which is costly, complex in process, and low in reliability. At present, GE's MLS series low-voltage switchgear and ABB's MS3.0 series low-voltage intelligent switchgear all use similar combined busbar technology and branch busbar hole-free lap technology, but the design is single. Different busbar clamps of different specifications are required for different main busbar specifications, which leads to complex materials, easy errors, and increased costs. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-combination busbar insulation support device, which can reduce the current-carrying cross-section, achieve hole-free overlap with the branch bus, and ensure the safe operation of the primary circuit; adopt a composite structure such as a multi-combination busbar insulation support device base, a limit adjustment block, a busbar clamp block and a busbar pressure plate to increase the overall rigidity of the device and improve the safety and reliability of the main busbar system; adopt a multi-functional limit adjustment block design to simplify the structure and facilitate installation and maintenance to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A multi-combination busbar insulation support device, comprising a multi-combination busbar insulation support base, a busbar pressure plate and a limit adjustment block, wherein the busbar pressure plate is fixedly installed on one side of the multi-combination busbar insulation support base, and the limit adjustment block is provided with two groups, and the two groups of limit adjustment blocks are fixedly plugged into the multi-combination busbar insulation support base by bolts;

[0007] A busbar clamp is arranged between one side of the outer wall of the multi-combination busbar insulation support base and the busbar pressure plate, a single group of busbar isolation ribs and a double group of busbar isolation ribs are respectively arranged on both sides of the busbar clamp, and a fastening hole is opened in the busbar clamp.

[0008] Wherein, a small-row-width combined busbar limiting surface and a large-row-width combined busbar limiting surface are respectively arranged on one side of the limit adjustment block.

[0009] Among them, the busbar clamp is respectively provided with a single-group busbar crimping surface and a double-group busbar installation surface, the single-group busbar isolation rib is fixedly formed at the center position of the single-group busbar crimping surface surface, and the double-group busbar isolation rib is fixedly formed at the center position of the double-group busbar installation surface surface.

[0010] The cross section of the multi-combination busbar insulating support base is triangular, and four groups of mounting holes are symmetrically provided on one side of the multi-combination busbar insulating support base.

[0011] Among them, a groove is opened on the outer surface of one side of the multi-combined busbar insulation support base, and two groups of combined busbar isolation ribs on the base are symmetrically arranged in the groove, and a combined busbar isolation rib on the base is arranged in the center between the two groups of combined busbar isolation ribs on the base, and the combined busbar isolation rib on the base and the combined busbar isolation rib on the base are the combined busbar installation surface on the base.

[0012] Among them, two groups of embedded thread blocks are symmetrically arranged on the inner wall of the multi-combination busbar insulation support base away from the groove, and guide slots are opened in the embedded thread blocks, and threaded holes are symmetrically opened on both sides of the guide slots.

[0013] Wherein, two groups of limit adjustment block mounting holes are symmetrically opened in the limit adjustment block, and the limit adjustment block mounting holes and the threaded holes are concentric and matched.

[0014] Among them, a combined busbar fixing hole is opened at the central position in the multi-combined busbar insulation support base, the combined busbar fixing hole passes through the combined busbar isolation rib on the base, and the fastening hole and the combined busbar fixing hole are concentric and matched.

[0015] Wherein, two groups of combined busbars are respectively arranged between the multi-combination busbar insulation support base and the busbar pressure plate.

[0016] In summary, due to the adoption of the above technology, the beneficial effects of the present invention are:

[0017] 1. The present invention can be applied to a single-phase busbar in the form of a combined busbar. Due to the increase in the busbar surface area and the change in the busbar heat dissipation method, the cross-sectional area of ​​the combined busbar is at least 10% lower than that of a single busbar at the same rated current. By setting a limit adjustment block, it can be applied to multiple groups of combined busbars with different row specifications at the same time, simplifying the design and structure and reducing the cost;

[0018] 2. The present invention is provided with a busbar clamp, which separates the upper and lower combined busbars by means of isolation ribs, thereby ensuring space for non-hole overlap with the branch busbar, and facilitating installation;

[0019] 3. The busbar clamping block provided in the present invention can be used as a pressure plate for the combined busbar, and also as a mounting plate and a middle partition for another group of combined busbars. It has multiple uses and saves labor and materials.

[0020] 4. The present invention adopts a composite structure including a multi-combination busbar insulation support device base, a limit adjustment block, a busbar clamp block and a busbar pressure plate, which increases the overall rigidity of the device and improves the safety and reliability of the main busbar system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the main structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the top view structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the multi-combination busbar insulation support base of the present invention;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the limit adjustment block of the present invention;

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the busbar clamp of the present invention;

[0027] Figure 7 This is a schematic diagram of the main structure of Example 3 of the present invention;

[0028] Figure 8 This is a schematic diagram of the main partial structure of Example 4 of the present invention;

[0029] Fig. 9 It is a schematic diagram of the three-dimensional structure of the positioning and locking assembly of Example 4 of the present invention.

[0030] Figure: 1. Multi-combination busbar insulation support base; 101. Mounting hole; 102. Groove; 2. Adjustment assembly; 201. Vertical plate; 202. Support plate; 203. Compression spring; 4. Busbar pressure plate; 5. Limit adjustment block; 51. Guide slot insert; 61. Limit adjustment block mounting hole; 7. Combination busbar; 81. Combination busbar fixing hole; 82. Fastening hole; 9. Busbar clamp block; 10. Embedded thread block; 11. Upper assembly on base Combined busbar isolation ribs; 12. Combined busbar isolation ribs on the base; 13. Small-row width combined busbar limiting surface; 14. Large-row width combined busbar limiting surface; 15. Double-group busbar isolation ribs; 16. Single-group busbar isolation ribs; 17. Single-group busbar crimping surface; 18. Double-group busbar installation surface; 19. Positioning locking assembly; 1901. Connecting rod; 1902. Ring; 1903. Positioning wheel; 1904. Threaded rod; 20. Installation carrier. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] Example 1

[0033] The present invention provides Figure 1-6A multi-combination busbar insulation support device shown in the figure comprises a multi-combination busbar insulation support base 1, a busbar pressure plate 4 and a limit adjustment block 5. Two groups of combined busbars 7 are respectively arranged between the multi-combination busbar insulation support base 1 and the busbar pressure plate 4. The combined busbar 7 refers to two upper and lower pieces arranged as a combination, replacing one row. For large current, two or three groups may be used to replace two or three busbars. The original single busbar becomes two busbars arranged in upper and lower positions. For example, for a current of 800A, the busbar specification width×thickness×number=100×5×single, for the purpose of energy saving, becomes 40×5×2, that is, one group of combined busbars. In this way, under the same current specification conditions, the cross-sectional area becomes smaller; the current 2000A, busbar specification width × thickness × quantity = 100 × 5 × 2 roots, changed to 40 × 5 × 4 roots, which are 2 groups of combined busbars arranged up and down; the busbar pressure plate 4 is fixedly installed on one side of the multi-combination busbar insulating support base 1, and the limit adjustment block 5 is provided with two groups, and the two groups of limit adjustment blocks 5 are fixedly plugged into the multi-combination busbar insulating support base 1 by bolts, and the limit adjustment block 5 is provided with a small row width combined busbar limit surface 13 and a large row width combined busbar limit surface 14 on one side, wherein the small row width combined busbar limit surface 13 is suitable for use in a main busbar system with a smaller row width, and the large row width combined busbar limit surface 14 is suitable for use in a main busbar system with a larger row width.

[0034] During installation, the limit adjustment block 5 is inserted into the base 1 of the multi-combined busbar insulation support device through the guide groove 51, exposing the small-row width busbar limit surface 13 and the large-row width busbar limit surface 14. The two groups of limit adjustment blocks 5 are symmetrically installed on the upper and lower ends of the multi-combined busbar insulation support base 1, and the combined busbar 7 is installed on the combined busbar installation surface on the base between the combined busbar isolation rib 11 on the base and the combined busbar isolation rib 12 on the base. The combined busbar isolation rib 12 on the base separates the upper and lower busbars of the combined busbar 7. Among them, the limit adjustment block 5 can select different limit surfaces according to the busbar width and is installed symmetrically to facilitate the use of busbars of different specifications.

[0035] A bus bar clamping block 9 is arranged between one side of the outer wall of the multi-combination bus bar insulation support base 1 and the bus bar pressing plate 4. Single-group bus bar isolation ribs 16 and double-group bus bar isolation ribs 15 are respectively arranged on both sides of the bus bar clamping block 9. A fastening hole 82 is formed in the bus bar clamping block 9. The bus bar clamping block 9 is respectively provided with a single-group bus bar pressing surface 17 and a double-group bus bar mounting surface 18. The single-group bus bar isolation rib 16 is fixedly formed at the center position of the surface of the single-group bus bar pressing surface 17. The double-group bus bar isolation rib 15 is fixedly formed at the center position of the surface of the double-group bus bar mounting surface 18. A combined bus bar fixing hole 81 is formed at the center position in the multi-combination bus bar insulation support base 1. The combined bus bar fixing hole 81 penetrates through the combined bus bar isolation rib 12 on the base. The fastening hole 82 and the combined bus bar fixing hole 81 are concentric and matched. When one group (2 pieces) of combined bus bars 7 is selected for the single-phase bus bar of the main bus bar system, the single-group bus bar isolation rib 16 separates the upper and lower bus bars of the combined bus bar 7. The single-group bus bar pressing surface 17 presses on the two bus bars of the selected combined bus bar 7. The bus bar pressing plate 4 presses on the double-group bus bar isolation rib 15. The combined bus bar first passes through the fastening hole 82 formed in the bus bar pressing plate 4, then passes through the fastening hole 82 formed in the bus bar clamping block 9, and finally passes through the combined bus bar fixing hole 81 in the combined bus bar isolation rib 12 on the base. Then, with the cooperation of flat gaskets and elastic gaskets, a high-strength nut is tightened to complete the fastening of the combined bus bar 7.

[0036] The cross-section of the multi-combination bus bar insulation support base 1 is triangularly arranged. The bus bar pressing plate 4 matched with it is arranged in a U-shaped structure. The cooperation with the limit adjustment block 5 and the bus bar clamping block 9 improves the stiffness of the whole device. Four groups of mounting holes 101 are symmetrically arranged on one side of the multi-combination bus bar insulation support base 1. A groove 102 is formed on the outer surface of one side of the multi-combination bus bar insulation support base 1. Two groups of combined bus bar isolation ribs 11 on the base are symmetrically arranged in the groove 102. A combined bus bar isolation rib 12 on the base is arranged at the center position between the two groups of combined bus bar isolation ribs 11 on the base. Two groups of embedded threaded blocks 10 are symmetrically arranged on one side of the inner wall of the multi-combination bus bar insulation support base 1 away from the groove 102. A guide groove insert 51 is formed in the embedded threaded block 10. Threaded holes are symmetrically formed on both sides of the guide groove insert 51. Two groups of limit adjustment block mounting holes 61 are symmetrically formed in the limit adjustment block 5. The limit adjustment block mounting holes 61 and the threaded holes are concentric and matched. The limit adjustment block 5 is connected and fastened to the embedded threaded block 10 on the multi-combination bus bar insulation support base 1 of the base through fastening screws.

[0037] Embodiment 2

[0038] When two groups (4) of combined busbars 7 are selected for simultaneous use in the single-phase busbar of the main busbar system, a single group of busbar isolation ribs 16 are used to separate the upper and lower busbars of the combined busbar 7, and the single group of busbar crimping surface 17 is pressed on the two busbars of the combined busbar 7. Another group of combined busbars 7 is installed on the double group of busbar installation surface 18, and the double group of busbar isolation ribs 15 separate the upper and lower busbars of the other group of combined busbars. The busbar pressure plate 4 is pressed on the upper and lower busbars of the other group of combined busbars, so that the fastening bolts first pass through the busbar pressure plate 4, then pass through the fastening holes 82 opened on the busbar clamp 9, and finally pass through the combined busbar fixing holes 81 in the combined busbar isolation ribs 12 on the base, and then use flat washers and elastic washers, and use high-strength nuts to tighten, so as to complete the fastening of the two groups of combined busbars 7.

[0039] Example 3

[0040] See also Figure 7 , which is different from Example 1 and Example 2, the limit adjustment block 5 is replaced by an adjustment component 2, and the adjustment component 2 includes a vertical plate 201 and two groups of support plates 202 slidably installed on one side of the vertical plate 201, two groups of compression springs 203 are symmetrically arranged between the two groups of support plates 202, a T-shaped slider is arranged on one side of the support plate 202, a T-shaped slide groove is arranged in the vertical plate 201, the T-shaped slider and the T-shaped slide groove are matched, and the T-shaped slide groove is a structure that is not opened up and down, so as to prevent the two groups of support plates 202 from slipping off in the vertical plate 201. During installation, the two groups of support plates 202 are squeezed to pass through the guide slot 51, and the spacing between the support plates 202 between the two groups of adjustment components 2 will be squeezed due to the different width selections of the combined busbar 7 or another group of combined busbars 7, so as to always ensure that the support plates 202 and the combined busbar 7 or another group of combined busbars 7 are in close contact with each other.

[0041] Example 4

[0042] See also Figure 8-9A positioning locking assembly 19 is provided on one side of the outer wall of the multi-combination busbar insulation support base 1. The positioning locking assembly 19 includes a connecting rod 1901, a collar 1902, and positioning wheels 1903 symmetrically arranged on both sides of the collar 1902. The positioning wheel 1903 is a deep groove ball bearing, and the positioning wheel 1903 is rotatably installed in the threaded rod 1904. The threaded rod 1904 and the collar 1902 are threadedly connected. An external thread is provided on the surface of one end of the connecting rod 1901, and the connecting rod 1901 is threadedly connected to the multi-combination busbar insulation support base 1 through the external thread. The end of the connecting rod 1901 away from the external thread is rotatably connected to the collar through a deep groove ball bearing. In 1902, it can be known from the above connection relationship that the connecting rod 1901, the collar 1902 and the positioning wheels 1903 symmetrically arranged on both sides of the collar 1902 are all in a threaded connection structure, which is detachable and easy to install. When the multi-combination busbar insulation support base 1 and the installation carrier 20 are connected, there is no need to process the installation hole in the installation carrier 20. The two sets of positioning wheels 1903 and the spacing between the positioning wheels 1903 and the multi-combination busbar insulation support base 1 are directly adjusted according to the opening size of the installation carrier 20 or the wall thickness of the profile of the installation carrier 20, so as to adapt to any model and specification of the installation carrier 20, and when installed, it can slide to any position. In the figure, the installation carrier is a commonly used installation carrier of the device.

[0043] It should be noted that in the power system, the busbar system is usually supported by a set of three-phase (L1, L2, L3) or four-phase (L1, L2, L3, N) insulated busbar clamps supporting rectangular conductor materials, which are horizontally installed in the busbar room at the upper end of the complete switchgear. Each phase uses 1 to 3 (100×10mm2) or 1 to 3 (120×10mm2) conductor materials to transmit current. For example, when the current is 3200A, the conductor material for each phase is TMY-3 (100×10mm2) copper busbar with a cross-sectional area of ​​S=3×100×10mm2=3000mm2. When leading from the busbar system to the branch distribution busbar, bolt connection holes need to be drilled on each phase horizontal busbar and vertical busbar according to standard requirements so that they can be bolted to each other. Therefore, when the busbar surface area increases and the busbar heat dissipation method changes, the cross-sectional area of ​​the combined busbar is at least 10% lower than that of the single busbar with the same rated current.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Claims

1. A multi-combination busbar insulation support device, comprising a multi-combination busbar insulation support base (1), a busbar pressure plate (4) and a limit adjustment block (5), characterized in that: The busbar pressure plate (4) is fixedly mounted on one side of the multi-combination busbar insulation support base (1), and two groups of limit adjustment blocks (5) are provided. The two groups of limit adjustment blocks (5) are fixedly inserted into the multi-combination busbar insulation support base (1) by bolts; A busbar clamp (9) is provided between one side of the outer wall of the multi-combination busbar insulation support base (1) and the busbar pressure plate (4), a single set of busbar isolation ribs (16) and a double set of busbar isolation ribs (15) are provided on both sides of the busbar clamp (9), and a fastening hole (82) is provided in the busbar clamp (9); A small row width combined busbar limiting surface (13) and a large row width combined busbar limiting surface (14) are respectively provided on one side of the limit adjustment block (5); The busbar clamp (9) is respectively provided with a single-group busbar crimping surface (17) and a double-group busbar installation surface (18); the single-group busbar isolation rib (16) is fixedly formed at a central position on the surface of the single-group busbar crimping surface (17); and the double-group busbar isolation rib (15) is fixedly formed at a central position on the surface of the double-group busbar installation surface (18); The multi-combination busbar insulation support base (1) has a triangular cross-section, and one side of the multi-combination busbar insulation support base (1) is symmetrically provided with four groups of mounting holes (101).

2. A multi-combination busbar insulation support device according to claim 1, characterized in that: A groove (102) is provided on the outer surface of one side of the multi-combined busbar insulation support base (1), two groups of base-mounted combined busbar isolation ribs (11) are symmetrically arranged in the grooves (102), a base-mounted combined busbar isolation rib (12) is arranged at a central position between the two groups of base-mounted combined busbar isolation ribs (11), and a base-mounted combined busbar installation surface is formed between the base-mounted combined busbar isolation ribs (11) and the base-mounted combined busbar isolation ribs (12).

3. A multi-combination busbar insulation support device according to claim 2, characterized in that: Two groups of embedded threaded blocks (10) are symmetrically arranged on one side of the inner wall of the multi-combination busbar insulation support base (1) away from the groove (102), and a guide slot insert (51) is provided in the embedded threaded block (10), and threaded holes are symmetrically provided on both sides of the guide slot insert (51).

4. A multi-combination busbar insulation support device according to claim 3, characterized in that: Two groups of limit adjustment block mounting holes (61) are symmetrically provided in the limit adjustment block (5); the limit adjustment block mounting holes (61) and the threaded holes are concentric and matched.

5. The multi-combination busbar insulation support device according to claim 1, characterized in that: A combined busbar fixing hole (81) is provided at a central position in the multi-combined busbar insulation support base (1), the combined busbar fixing hole (81) penetrates the combined busbar isolation rib (12) on the base, and the fastening hole (82) and the combined busbar fixing hole (81) are concentrically and matched.

6. The multi-combination busbar insulation support device according to claim 1, characterized in that: Two groups of combined busbars (7) are respectively arranged between the multi-combined busbar insulation support base (1) and the busbar pressure plate (4).

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