Connecting structure of bus duct and terminal box

Abstract

The utility model discloses a connecting structure of a bus duct and a terminal box, comprising a bus duct and a terminal box connected with the bus duct, the bus duct comprises a housing, two side plates installed at the end portion of the housing and used for being inserted into the terminal box, and a connecting hole arranged at the end portion of the housing, the terminal box comprises a box body with an opening formed in the side face, an N sealing plate installed on the rear side of the opening of the box body, and a PE sealing plate installed on the front side of the opening of the box body. According to the utility model, the PE sealing plate, the N sealing plate and the sealing gasket are arranged to carry out omnibearing protection on the joint of the bus duct and the terminal box, so that the joint of the bus duct and the terminal box has better sealing protection, the box body is fully welded as a whole, and the sealing performance of the box body is better, so that the sealing performance of the joint of the bus duct and the terminal box is guaranteed, and the service life of the bus duct and the terminal box is prolonged. The interior of the box body is prevented from being corroded by water, potential safety hazards are eradicated, the moisture-proof performance is good, and application and popularization are facilitated.

Description

Technical Field

[0001] The utility model specifically relates to a connection structure between a bus duct and a terminal box. Background Art

[0002] Bus duct is a closed metal device composed of copper and aluminum busbar columns, which is used to distribute large power to various components of the distributed system. Due to its series matching, commercial production, small size, large capacity, short design and construction period, easy installation and disassembly, no combustion, safety and reliability, and long service life, bus duct has increasingly replaced wires and cables in indoor low-voltage power transmission trunk projects. Among them, when the bus duct is installed, the end of the bus duct is usually connected to the terminal box or the starting box to achieve seamless connection with the electrical equipment.

[0003] However, after the existing bus duct is connected to the terminal box, the sealing of the connection between the two is often not guaranteed. External moisture can easily enter the terminal box through the gap in the connection, causing the terminal box to become damp and corroded by moisture, posing a safety hazard and affecting its use.

[0004] Therefore, it is necessary to invent a connection structure between bus duct and terminal box to solve the above problems. Utility Model Content

[0005] (1) Purpose of the utility model

[0006] In order to solve the technical problems existing in the background technology, the utility model proposes a connection structure between the bus duct and the terminal box. By providing a PE sealing plate, an N sealing plate, and a sealing gasket, the connection between the bus duct and the terminal box is fully protected, so that the connection between the two has better sealing protection, and the box body is fully welded as a whole, and the box body itself has better sealing, so that the sealing of the connection between the two is guaranteed, avoiding moisture corrosion in the box body, eliminating safety hazards, and having good moisture-proof performance, which is conducive to promotion and use.

[0007] (2) Technical solution

[0008] In order to achieve the above object, the utility model provides the following technical solutions: a connection structure between a bus duct and a terminal box, comprising a bus duct and a terminal box connected to the bus duct;

[0009] The bus duct includes a shell, two side panels installed at the ends of the shell and used to be inserted into the terminal box, and a connection hole opened at the ends of the shell;

[0010] The terminal box includes a box body with an opening on the side, an N sealing plate installed on the rear side of the box body opening, a PE sealing plate installed on the front side of the box body opening, a sealing gasket laid on the bottom and top of the box body opening, a plurality of partitions arranged inside the box body, and locking holes opened on the top and bottom walls of the box body;

[0011] Fasteners are installed inside the two connection holes, and the fasteners are screwed downward into the corresponding locking holes to complete the connection between the bus duct and the terminal box.

[0012] Preferably, busbars are inserted into the bus duct, and the busbars are busbar PE row, busbar A row, busbar B row, busbar C row, and busbar N row from the outside to the inside.

[0013] Preferably, an insertion gap for inserting the busbar is formed between every two adjacent partitions, and a pad is laid between the two adjacent partitions.

[0014] Preferably, the partition is configured as an epoxy resin partition, and the pad is configured as an epoxy resin pad.

[0015] Preferably, there are four connecting holes, which are respectively arranged at the four corners of the shell end, and there are also four locking holes, which are arranged in a one-to-one correspondence with the connecting holes.

[0016] Preferably, the fastener is configured as a bolt and is adapted to the connecting hole and the locking hole.

[0017] Preferably, the sealing gasket is configured as a silicone rubber sealing gasket, and the sealing gasket is also provided with a locking hole for a fastener to be screwed into.

[0018] Preferably, the plates of the box are fully welded.

[0019] Preferably, the box body is formed by splicing plates, and the plates are also fixed together by bolts.

[0020] Compared with the prior art, the beneficial effects of the above technical solution of the utility model are:

[0021] The utility model is provided with PE sealing plates and N sealing plates, which can protect the busbar PE row and busbar N row on the outside of the busbar, improve the connection strength between the busbar duct and the terminal box, and ensure the sealing of the side of the busbar. The provision of the sealing gasket ensures that the bottom and top of the connection between the busbar duct and the terminal box are also well sealed and protected, and the box body is fully welded as a whole, and the box body itself has good sealing performance, so that after the busbar duct and the terminal box are assembled, the sealing performance of the connection is guaranteed, and it is difficult for external moisture to enter the box through the connection between the two, thereby avoiding corrosion of the box by moisture, eliminating safety hazards, and having good moisture-proof performance. The entire assembly process is simple and convenient, which is conducive to promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the bus duct structure of the utility model;

[0025] Figure 3 This is a schematic diagram of the internal structure of the box of the utility model;

[0026] Figure 4 This is a front view of the box body of the utility model;

[0027] Figure 5 This is a schematic diagram of the connection between the spliced ​​box and the bus duct of the utility model;

[0028] Figure 6 This is a schematic diagram of the connection between the closed bus duct and the box body of the utility model.

[0029] Description of reference numerals:

[0030] 1 bus duct, 11 shell, 12 side plate, 13 connection hole, 14 bus bar;

[0031] 2 terminal box, 21 box body, 22 N sealing plate, 23 PE sealing plate, 24 sealing gasket, 25 partition plate, 26 locking hole;

[0032] 3 fasteners, 4 spacers. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] The utility model provides Figure 1-4 The bus duct and terminal box connection structure shown includes a bus duct 1 and a terminal box 2 connected to the bus duct 1;

[0035] The bus duct 1 includes a housing 11, two side panels 12 mounted at the ends of the housing 11 for inserting into the terminal box 2, and a connection hole 13 opened at the ends of the housing 11;

[0036] The terminal box 2 includes a box body 21 with an opening on the side, an N sealing plate 22 installed on the rear side of the opening of the box body 21, a PE sealing plate 23 installed on the front side of the opening of the box body 21, a sealing gasket 24 laid on the bottom and top of the opening of the box body 21, a plurality of partitions 25 arranged inside the box body 21, and locking holes 26 opened on the top and bottom walls of the box body 21;

[0037] A fastener 3 is installed inside each of the two connection holes 13 , and the fastener 3 is screwed downward into the corresponding locking hole 26 to complete the connection between the bus duct 1 and the terminal box 2 .

[0038] In one embodiment, busbars 14 are inserted into the bus duct 1, and the busbars 14 are busbar PE row, busbar A row, busbar B row, busbar C row, and busbar N row from the outside to the inside. A plug-in gap for the busbar 14 to be inserted is formed between every two adjacent partitions 25, so that the busbar 14 can be quickly inserted into the interior of the box 21, and a pad 4 is laid between two adjacent partitions 25. The partition 25 is set to an epoxy resin partition 25, and the pad 4 is set to an epoxy resin pad 4, so that the busbar 14 has better insulation performance during subsequent use.

[0039] In one embodiment, there are four connecting holes 13, which are respectively arranged at the four corners of the end of the shell 11. There are also four locking holes 26, which are arranged one-to-one corresponding to the connecting holes 13. The fastener 3 is set as a bolt, which is convenient for the staff to use and operate, and is adapted to the connecting hole 13 and the locking hole 26. The sealing gasket 24 is also provided with a locking hole 26 for the fastener 3 to be screwed into, so that after the fastener 3 is tightened, the top and bottom of the bus duct 1 are in close contact with the top and bottom of the box body 21 through the sealing gasket 24, so that the busbar 14 can be effectively protected. The sealing gasket 24 is set as a silicone rubber sealing gasket 24, which is low in price and has a good sealing effect, and does not affect the use of the bus duct 1 and the terminal box 2.

[0040] like Figure 1 As shown, in one embodiment, the plates of the box body 21 are fully welded, so that the plates of the box body 21 have good sealing performance, reach the waterproof level, and ensure the structural strength of the box body 21 after welding, ensuring that the connection between the bus duct 1 and the terminal box 2 is firm and reliable.

[0041] like Figure 5As shown, in one embodiment, the box body 21 is formed by splicing plates, and the plates are also fixed together by bolts. At the same time, when splicing the plates, suitable waterproof strips are configured to ensure that the plates of the box body 21 have good sealing performance and reach a waterproof level. The splicing method does not require welding operations, making it easier to complete the assembly of the box body and improving work efficiency. In addition, during subsequent maintenance, it can be disassembled without damaging the connection with the bus duct 1, which is more practical.

[0042] like Figure 6 As shown, in one embodiment, the box body 21 is still fully welded, and the bus duct 1 is set as a closed bus duct. The bus duct 1 and the box body 21 are also assembled by bolts, which has the beneficial effects of efficient current transmission and high safety after assembly.

[0043] The specific implementation method is as follows: when assembling the present invention, the staff cleans the end of the bus duct 1 provided with the side plate 12 to ensure the cleanliness of the connection end of the bus duct 1, and then directly inserts the bus duct 1 into the terminal box 2, that is, the bus bar 14 is inserted into the box body 21 along the plug-in gap between the partitions 25. At this time, the PE sealing plate 23 will contact the outer side of the bus PE bar, limiting the entire bus bar 14 while protecting the outer side of the bus PE bar. Correspondingly, the N sealing plate 22 will protect the outer side of the bus N bar. When the bus bar 14 is inserted, the partition 25 and the pad 4 will ensure that the bus bar 14 has a good insulation effect when in use. Subsequently, the staff screws the fastener 3 into the locking hole 26 at the top of the box body 21, and the fastener 3 can pass through the connection hole 13 on the shell 11, the sealing gasket 24 and the locking hole 26 on the box body 21. When the fastener 3 is tightened with the nut (not shown in the figure), the assembly of the bus duct 1 and the terminal box 2 is completed.

[0044] Specifically, by providing the PE sealing plate 23 and the N sealing plate 22, the busbar PE row and the busbar N row outside the busbar 14 can be protected, the connection strength between the busbar duct 1 and the terminal box 2 can be improved, and the sealing of the side of the busbar 14 can be ensured. The provision of the sealing gasket 24 also provides good sealing protection at the bottom and top of the connection between the busbar duct 1 and the terminal box 2. The box body 21 is fully welded as a whole, and the sealing of the box body 21 itself is good. Therefore, after the busbar duct 1 and the terminal box 2 are assembled, the sealing of the connection is guaranteed, and it is difficult for external moisture to enter the box body 21 through the connection between the two, thereby avoiding moisture corrosion in the box body 21, eliminating safety hazards, and having good moisture-proof performance. The entire assembly process is simple and convenient, which is conducive to popularization and use.

[0045] This embodiment specifically solves the problem in the prior art that after the current bus duct 1 is connected to the terminal box 2, the sealing of the connection between the two is often not guaranteed, and external moisture can easily enter the terminal box 2 through the gap in the connection, causing the terminal box 2 to become damp and corroded by moisture, posing a safety hazard and affecting its use.

[0046] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A connection structure between a bus duct and a terminal box, characterized in that: It comprises a bus duct (1) and a terminal box (2) connected to the bus duct (1); The bus duct (1) comprises a housing (11), two side panels (12) mounted at the ends of the housing (11) and used for inserting into the terminal box (2), and a connection hole (13) opened at the ends of the housing (11); The terminal box (2) comprises a box body (21) with an opening on the side, an N sealing plate (22) installed at the rear side of the opening of the box body (21), a PE sealing plate (23) installed at the front side of the opening of the box body (21), a sealing gasket (24) laid at the bottom and top of the opening of the box body (21), a plurality of partitions (25) arranged inside the box body (21), and locking holes (26) opened on the top wall and bottom wall of the box body (21); Fasteners (3) are installed inside the two connection holes (13), and the fasteners (3) are screwed downward into the corresponding locking holes (26) to complete the connection between the bus duct (1) and the terminal box (2).

2. The connection structure between a bus duct and a terminal box according to claim 1, characterized in that: The busbar duct (1) is internally interspersed with busbar rows (14), and the busbar rows (14) are, from outside to inside, busbar PE row, busbar A row, busbar B row, busbar C row, and busbar N row.

3. The connection structure between a bus duct and a terminal box according to claim 2, characterized in that: A plug-in gap for inserting the busbar (14) is formed between each two adjacent partitions (25), and a pad (4) is also laid between the two adjacent partitions (25).

4. The connection structure between a bus duct and a terminal box according to claim 3, characterized in that: The partition (25) is configured as an epoxy resin partition (25), and the pad (4) is configured as an epoxy resin pad (4).

5. The connection structure between a bus duct and a terminal box according to claim 1, characterized in that: The number of the connecting holes (13) is four and they are respectively arranged at the four corners of the end of the shell (11). The number of the locking holes (26) is also four and they are arranged in a one-to-one correspondence with the connecting holes (13).

6. The connection structure between a bus duct and a terminal box according to claim 5, characterized in that: The fastener (3) is configured as a bolt and is adapted to the connecting hole (13) and the locking hole (26).

7. The connection structure between a bus duct and a terminal box according to claim 1, characterized in that: The sealing gasket (24) is configured as a silicone rubber sealing gasket (24), and the sealing gasket (24) is also provided with a locking hole (26) for the fastener (3) to be screwed in.

8. The connection structure between a bus duct and a terminal box according to claim 1, characterized in that: The plates of the box (21) are fully welded.

9. The connection structure between a bus duct and a terminal box according to claim 1, characterized in that: The box body (21) is formed by splicing plates, and the plates are also fixed together by bolts.

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