CN205489251U - Side cabinet combining structure of cubical switchboard - Google Patents

Abstract

The utility model discloses a side cabinet combining structure of cubical switchboard, including side sleeve pipe and bus connector, its characterized in that: the side sleeve pipe have a plurality of and installing in the side of cubical switchboard, bus connector installs between the side sleeve pipe that two cubical switchboards correspond, bus connector include cabinet combining connection bus and silicon rubber double -end sealing member, the cabinet combining connection bus pass in the female wire spring of side sheathed tube and card go into electrically conductive bar groove, in silicon rubber double -end sealing member imbeds laterally sheathed tube sealing member mounting hole, also disclose the installation method of this cabinet combining structure simultaneously. The utility model discloses a bus connector installs in the sub - middle part of two cabinets, has quick, the all insulation, totally enclosed of installation, and safe and reliable's advantage, and can let through overlapping intraductal female wire spring the connection bus moderate degree is flexible to be rocked about and can effectively be avoided because the operating stability behind the cabinet combining has been guaranteed to connection problem that assembly error that the uneven problem of base was brought shines.

Description

A side combined cabinet structure of a switch cabinet

technical field

The utility model relates to the technical field of gas insulated switch cabinets, in particular to a side cabinet combining structure of a switch cabinet.

Background technique

Gas insulated switchgear is widely welcomed by power supply departments and users because of its excellent performance, reliable operation, fully enclosed, maintenance-free and various performances of the power supply unit. It is a high-performance product. All conductors of the gas insulated switchgear are fully sealed, and the main busbar is also sealed inside the gas box. When the switchgear needs to be expanded, it is not possible to directly use copper bars to connect the main busbars together like the air-insulated switchgear. If cable extension is used, it is necessary to add an extension unit to each switchgear, and install cable accessories and cables, which increases the cost of extension, and also brings hidden dangers to product operation due to the increase in connection links. With the maturity of the manufacturing process of gas insulated switchgear and the wide application of silicone rubber parts in the power industry, more and more specific busbar expansion accessories are used, but the cabinet connection interface of the ring main unit is mostly located on the top of the switchgear or In the lower part, the interface bushing is a C-type bushing (the type of bushing defined by EN50181), and there are many accessories in the cabinet, and the installation is inconvenient. If it needs to be expanded again, some of the original busbar connectors need to be removed. The installation is labor-intensive and the process is cumbersome. , and when the busbar connector is installed on the top, there is no closure, and there are still safety issues.

Contents of the invention

Aiming at the deficiencies of the prior art, the utility model provides a side cabinet combining structure of a switch cabinet with fast assembly speed, good insulation and sealing performance, stable operation and high safety.

The technical scheme of the utility model is: a side cabinet structure of a switch cabinet, including a side bushing and a busbar connector, characterized in that there are several side bushings and are installed on the side of the switch cabinet, and the busbar is connected The connector is installed between the corresponding side bushings of the two switchgears. The busbar connector includes a cabinet-combining busbar and a silicone rubber double-headed seal. The cabinet-combining busbar passes through the busbar spring of the side bushing and Snap into the groove of the conductive rod, and the silicone rubber double-headed seal is embedded in the seal installation hole of the side casing.

The side bushing includes an insulating pipe body fixed on the side of the switch cabinet and a conductive rod installed in the insulating pipe body. The front end of the conductive rod is provided with a conductive rod groove, and a busbar spring is arranged in the conductive rod groove. The outer wall of the conductive rod A seal mounting hole is formed between the inner wall of the insulation pipe and the inner wall.

The end surface of the insulating pipe body is provided with a sealing ring groove, and a rubber sealing ring is arranged in the sealing ring groove.

The cabinet-combining connection bus bar is a copper rod with circular platforms at both ends and a cylinder in the middle. The surface of the copper rod is silver-plated to reduce the contact resistance with the bushing on the side of the switch cabinet.

The silicone rubber double-head seal is a round rod structure with a through hole. The surface of the round rod is partially sprayed with a semiconductor coating layer that can evenly distribute the electric field. A disc is arranged in the middle of the outer wall of the round rod. The outer wall of the round bar forms two symmetrically arranged slopes, and a positioning ring is provided in the through hole of the round bar, and the positioning ring has a positioning hole matching the outer diameter of the connecting bus bar of the combined cabinet.

The side combined cabinet structure also includes a positioning pin assembly installed between two switch cabinets. The positioning pin assembly includes a positioning pin, a support sleeve and a hexagonal bolt. One end of the positioning pin is fixed on a switch cabinet, and the other end is passed through Pass through the positioning pin hole of another switch cabinet and fix it by the supporting sleeve, large washer, spring washer and hexagonal bolt arranged in sequence.

A cabinet combining method for a side cabinet combining structure of a switch cabinet, comprising the following steps:

1) Clean the side bushings where the busbars connected to the parallel cabinets, the silicone rubber double-head seals and the busbar springs are located in the busbar connectors;

2) Install positioning pins on the upper and lower sides of a switch cabinet with side bushings installed;

3) Install one end of the connecting bus bar and the silicone rubber double-head seal into the side bushing of the switch cabinet;

4) After the three-phase installation of A, B, and C is completed, push the second switch cabinet to the first switch cabinet, so that the other end of the connecting busbar and the silicone rubber double-headed seal are aligned and snapped into the second switch cabinet. In the corresponding side bushing of a switchgear;

5) After snapping the positioning pin of the first switch cabinet into the positioning pin hole of the second switch cabinet, install the standard connection support sleeve, large washer, spring washer and hexagonal bolts, and twist the hexagonal bolts to make the two switchgears more near;

6) After the sheet metal of the two switch cabinets is close, fix the cable chamber at the front end with hexagon socket head cap screws, and finally tighten the hexagon bolts to complete the installation.

The beneficial effects of the utility model are:

1. The core component is the busbar connector. The busbar connector is installed in the middle of the two cabinets. It is installed quickly. The connection can be completed during the process of moving the switch cabinet. It is fully insulated, fully sealed, safe and reliable, and has more stable performance. .

2. The busbar spring in the bushing can make the connecting busbar moderately stretch and shake up and down, which can effectively avoid the connection problem caused by the assembly error caused by the uneven base, and ensure the operation stability of the switchgear after the cabinet is combined.

Description of drawings

Fig. 1 is the schematic diagram of installation of the busbar connector of the present utility model;

Fig. 2 is a schematic diagram of the side structure of the switchgear of the present invention;

Fig. 3 is the installation schematic diagram of positioning pin of the present utility model;

In the figure, connecting busbar (1), silicone rubber double-ended seal (2), busbar spring (3), switchgear (4, 5), screw (6), positioning pin (7), support sleeve (8), Large washer (9), spring washer (10), hex bolt (11).

detailed description

The specific embodiment of the utility model will be further described below in conjunction with accompanying drawing:

With the maturity of gas insulated switchgear manufacturing technology and the emergence of new materials, the utility model provides a side cabinet structure of the switchgear, as shown in Figure 1, Figure 2 and Figure 3, the mechanism includes side bushings and busbar connectors, there are several side bushings and are installed on the side of the switch cabinet, and the busbar connectors are installed between the corresponding side bushings of the two switchgears, and the busbar connectors include cabinet-connecting busbars (1) and silicone rubber double-headed seal (2), the cabinet connection busbar (1) passes through the busbar spring (3) of the side bushing and snaps into the groove of the conductive rod, the silicone rubber double-headed seal (2) Embedded in the seal installation hole of the side bushing.

In this embodiment, the side bushing includes an epoxy resin pipe body fixed on the side of the switch cabinet by screws and a conductive rod installed in the epoxy resin pipe body, and the inner side of the conductive rod is connected to the busbar copper bar in the switch cabinet , the end surface of the conductive rod is provided with a conductive rod groove, and a busbar spring (3) is installed in the conductive rod groove. The busbar spring (3) can increase the contact area between the cabinet connecting busbar (1) and the conductive rod groove, and improve the conductivity. Performance, a seal installation hole is formed between the outer wall of the conductive rod and the inner wall of the epoxy resin tube, and the end face of the epoxy resin tube is also equipped with a rubber seal ring through the seal ring groove to further improve the sealing performance;

The cabinet-combining connection bus bar (1) is a copper rod with round platforms at both ends and a cylinder in the middle. The surface of the copper rod is silver-plated to reduce the contact resistance with the bushing on the side of the switch cabinet; The seal (2) is a round rod structure with a through hole. The surface of the round rod is partially sprayed with a semiconductor coating layer that can evenly distribute the electric field. There is a disc in the middle of the outer wall of the round rod, and the outer walls of the round rod on both sides of the disc form The two slopes are arranged symmetrically, and a positioning ring is arranged in the through hole of the round bar, and the positioning ring has a positioning hole matching the outer diameter of the connecting busbar (1) of the parallel cabinet.

In this embodiment, the side combined cabinet structure also includes a positioning pin (7) assembly installed between the two switch cabinets, and the positioning pin (7) assembly includes a positioning pin (7), a support sleeve ( 8) and hexagonal bolts (11), one end of the positioning pin (7) is fixed on one switch cabinet (4), and the other end passes through the hole of the positioning pin (7) of the other switch cabinet (5) and passes through the supporting sleeves arranged in sequence (8), large washer (9), spring washer (10) and hex bolt (11) to fix.

The busbar connector provided by the utility model is a core component specially used for lateral expansion of the gas insulated switchgear, and its accessories include:

Among them, the silicone rubber double-head seal is made of special silicone rubber casting, which has strong dielectric strength, and the surface is partially sprayed with a semiconductor coating layer, which can evenly distribute the electric field and improve reliability. The connecting busbar is made of T2 copper, and the surface is silver-plated, and the contact resistance with the expansion port of the switch cabinet is smaller, which solves the problem of heat generation at the connection after the current passes.

The installation process of the utility model is as follows: install the busbar connectors on the two switchgears (4 and 5), firstly install the upper and lower positioning pins (7), and clean the connecting busbars (1) and silicon in the busbar connectors. The bushing where the rubber double-ended seal (2) and the busbar spring (3) are located. Then install the connecting bus bar (1) and the silicone rubber double-head seal (2) into the side bushing of the switch cabinet (4). Push the cabinet (4), and when it reaches the position shown in Figure 3, install the standard connection support sleeve (8), large washer (9), conical spring washer (10), hexagonal bolt (11), and turn the hexagonal bolt (11 ), the two cabinets are gradually approaching, and after the sheet metal of the switch cabinet is close, screw the cable chamber with socket head cap screws (6), and then tighten the hexagon bolts (11), and the installation is complete.

The utility model is characterized in that: the connecting busbar (1) enters the side bushings of the two cabinets and is in reliable contact with the busbar spring (3). Silicone rubber double-headed seals (2) The semiconductor coating on the outer surface is in contact with the fixing screws of the bushing on the side of the switchgear, and wraps the connecting busbar (1), which can effectively prevent water vapor and dust from entering. Silicone rubber double-headed seals (2) ) The design of the semiconductor coating layer on the surface makes the electric field evenly distributed, and the operation is safer and more reliable.

What described in above-mentioned embodiment and description just illustrates the principle of the utility model and the best embodiment, under the premise of not departing from the spirit and scope of the utility model, the utility model also can have various changes and improvements, these changes and improvements All fall within the scope of the utility model claimed.

Claims (6)

1. A side cabinet structure of a switch cabinet, including a side bushing and a busbar connector, characterized in that: there are several side bushings and are installed on the side of the switch cabinet, and the busbar connector is installed on two switchgears Between the corresponding side bushings of the cabinets, the busbar connectors include a cabinet connecting busbar and a silicone rubber double-headed seal, and the cabinet connecting busbars pass through the busbar springs of the side bushings and snap into the groove of the conductive rod Inside, the silicone rubber double-ended seal is embedded in the seal mounting hole of the side bushing. 2. The side combined cabinet structure of the switchgear according to claim 1, characterized in that: the side bushing includes an insulating pipe body fixed on the side of the switchgear and a conductive rod installed in the insulating pipe body, the front end of the conductive rod A conductive rod groove is provided, and a bus bar spring is arranged in the conductive rod groove, and a seal installation hole is formed between the outer wall of the conductive rod and the inner wall of the insulating tube. 3. The side cabinet structure of the switch cabinet according to claim 2, characterized in that: the end surface of the insulating pipe body is provided with a sealing ring groove, and a rubber sealing ring is provided in the sealing ring groove. 4. The side combined cabinet structure of the switchgear according to claim 1, characterized in that: the connecting bus bar of the combined cabinets is a copper rod with round platforms at both ends and a cylinder in the middle, and the surface of the copper rod is silver-plated. 5. The side cabinet structure of the switch cabinet according to claim 1, characterized in that: the silicone rubber double-headed seal is a round rod structure with a through hole, and the surface of the round rod can be sprayed to uniformly distribute the electric field. Semiconductor coating layer, a disc is arranged in the middle of the outer wall of the round bar, and the outer walls of the round bar on both sides of the disc form two slopes arranged symmetrically. A positioning ring is provided in the through hole of the round bar. Pilot holes to match outer diameter. 6. The side combined cabinet structure of the switch cabinet according to claim 1, characterized in that: the side combined cabinet structure further includes a positioning pin assembly installed between the two switch cabinets, and the positioning pin assembly includes Locating pin, support sleeve and hexagonal bolt, one end of the locating pin is fixed on a switch cabinet, and the other end passes through the positioning pin hole of another switch cabinet and is fixed by the supporting sleeve, large washer, spring washer and hexagonal bolt arranged in sequence.