CN218850033U - V-shaped hard bus connecting device for solid insulated cabinet - Google Patents

Abstract

The utility model provides a V-shaped solid insulated cabinet hard bus connection device; it includes three sets of connecting wire assemblies, the connecting wire assembly includes connecting bus, two T-shaped plugs and two connecting bolts; the bus sheath connecting the bus is Insulation material, the busbar sheath is wrapped on the outside of the copper busbar, the transfer terminal is provided with a through hole for matching with the connecting bolt, and the two transfer terminals are respectively fixedly connected with the two ends of the copper busbar; the end surface of the first plug part is provided with It fits the first assembly slot of the terminal post of the bus cabinet, the second plug part has a second assembly slot on the end face, the third plug part has a third assembly slot on the lower end face, and the T-shaped plug also has a fourth assembly slot; the T-shaped plug has a fourth assembly slot A plug part is sleeved on the outside of the corresponding terminal, and the connecting bolt passes through the through hole of the transfer terminal and matches with the threaded hole of the corresponding terminal. The whole set of products does not need to be assembled to prevent product scratches, and it can be installed directly on site according to the center distance, making the product more portable.

Description

V-shaped solid insulation cabinet hard bus connection device

technical field

The utility model relates to the technical field of switch cabinets, in particular to a hard busbar connection device for a V-shaped solid insulating cabinet.

Background technique

Switchgear is a kind of electrical equipment, whose main function is to open and close, control and protect electrical equipment during the process of power generation, transmission, distribution and power conversion in the power system. In actual use, different types of cabinets such as circuit breaker cabinets, contactor cabinets (F.C circuit), and load switch cabinets (F.S circuit) are often connected to the same busbar. Different load circuits use different switching elements for protection and control. Reduce the cost of switchgear. The two switchgears are connected by cables, and the cables in the prior art often need to be bent several times to achieve the connection effect, or use extended cables to overcome the difficulty of bending, and after the cables are bent, their bending The bends are subjected to bending pressure, and the integrity of the pipeline is damaged. Frequent and long-term high-voltage currents pass through the high-voltage switchgear, especially the bends are very likely to cause electrical risks, including cable bulges and bursts.

The hard busbar is one of the main installation components in the production of power distribution cabinets. In addition to the hard busbar should have enough contact surface, the connection between the busbars should ensure sufficient and lasting contact pressure without causing permanent deformation. Its Good or bad directly affects the electrical performance of the equipment.

The utility model patent with the application number CN201821967137.4 discloses a hard bus bar connection structure, including a first hard bus bar and a second hard bus bar, the overlapping surface of the first hard bus bar and the second hard bus bar is an embossed surface, the first hard bus bar The bus bar and the second hard bus bar are provided with through holes, and bolts are arranged in the through holes, nuts are arranged at one end of the bolts, and longitudinal slots are arranged between the through holes. The overlapping surface of the hard busbar is smoother and has more contact surfaces, which reduces the resistance of the overlapping surface of the hard busbar, and at the same time makes the connection of the hard busbar more firm and not easy to deform. However, this patent cannot solve the problems of poor coordination, poor contact, cumbersome installation and maintenance, high cost, and unstable electrical performance in the prior art.

Utility model content

The technical problem to be solved by the utility model is to provide a V-shaped solid insulated cabinet hard busbar connection device with reasonable structure and stable electrical performance. The V-shaped solid insulated cabinet hard busbar , Solid insulated cabinets, air insulated cabinets, primary and secondary fusion ring network cabinets and other combined cabinets have large assembly errors. At present, the products are not well matched and have poor contact, cumbersome installation and maintenance, high cost, and unstable electrical performance.

In order to solve the above technical problems, the utility model provides a V-shaped solid insulation cabinet hard bus connection device;

It includes three sets of connecting wire assemblies, which include connecting busbars, two T-shaped plugs and two connecting bolts;

The connecting busbar includes a busbar sheath, a copper busbar and two transfer terminals, the busbar sheath is insulating material, the busbar sheath is wrapped on the outside of the copper busbar, two transfer terminals, two T-shaped plugs and two connection terminals The bolts have a one-to-one correspondence relationship, and the transfer terminal is provided with a through hole for matching with the connecting bolt, and the two transfer terminals are respectively fixedly connected to the two ends of the copper busbar;

The T-shaped plug includes a first plug part, a second plug part and a third plug part, the first plug part and the second plug part are respectively arranged horizontally, the center line of the third plug part is perpendicular to the center line of the first plug part, The end surface of the first plug part is provided with a first assembly groove that fits the terminal of the bus cabinet, the end surface of the second plug part is provided with a second assembly groove, and the lower end surface of the third plug part is provided with a third assembly groove that fits the end of the bus bar. The T-shaped plug is also provided with a fourth assembly groove connecting the first assembly groove, the second assembly groove and the third assembly groove, and the outline of the fourth assembly groove matches the outer outline of the transfer terminal connected to the busbar;

The three sets of terminal posts of the two busbar cabinets are respectively connected with the three sets of connecting wire assemblies. The first plug part of the T-shaped plug is set outside the corresponding terminal post, and the end of the connecting bus bar extends into the third assembly groove of the third plug part. , the transfer terminal connected to the bus bar is located in the fourth assembly groove, and the connecting bolt passes through the through hole of the transfer terminal and fits with the threaded hole of the corresponding terminal.

As a preferred option of the V-shaped solid insulated cabinet hard bus connection device, the connecting wire assembly also includes two connecting nuts, the two connecting nuts correspond to the two connecting bolts one by one, and the connecting bolts first cooperate with the corresponding connecting nuts Then pass through the through hole of the corresponding transfer terminal, and match with the threaded hole of the corresponding terminal.

As a preferred option of the V-shaped solid insulated cabinet hard bus bar connection device, the connecting line assembly also includes two insulating plugs, and the two insulating plugs and the two T-shaped plugs correspond to the two connecting bolts one by one. The plug is located in the second assembly groove corresponding to the T-shaped plug, the outer contour of the insulating plug matches the contour of the second assembly groove, and the end surface of the insulating plug is also provided with a slot for accommodating connecting bolts and connecting nuts.

As the optimization of the V-shaped solid insulated cabinet hard bus connection device, the connecting line assembly also includes two rear plugs, the two rear plugs correspond to the two T-shaped plugs one by one, and the rear plugs correspond to the T-shaped plugs. The end face of the second plug part is detachably connected.

As a preferred option of the V-shaped solid insulated cabinet hard bus connection device, the T-shaped plug is an integrated structure, and the T-shaped plug includes an outer shell and an inner insulating layer, the first assembly groove, the second assembly groove, the second Both the third assembly groove and the fourth assembly groove are in the insulating layer.

As a preferred option of this V-shaped solid insulated cabinet hard bus bar connection device, the fourth assembly groove of the T-shaped plug and the side walls of the connection with the first assembly groove, the second assembly groove and the third assembly groove are all attached with inner Shield.

As a preferred option of the V-shaped solid insulated cabinet hard bus connection device, the transfer terminal for connecting the bus is interference-fitted with the corresponding fourth assembly groove of the T-shaped plug.

As the preferred choice of the V-shaped solid insulated cabinet hard busbar connection device, the three sets of connecting wire assemblies are the first connecting assembly, the second connecting assembly and the third connecting assembly, and the first connecting assembly connects the A phases of the two busbar cabinets respectively. Electric terminal, the second connecting component is respectively connected to the terminal of B-phase electricity of the two busbar cabinets, and the third connecting component is respectively connected to the terminal of C-phase electricity of the two busbar cabinets;

The copper bus bars connected to the bus bars in the first connection assembly are bent toward the rear side, and the copper bus bars connected to the bus bars in the third connection assembly are bent toward the front side.

The T-shaped plug adopts the shielding design produced by multi-layer composite technology. There is no gap design between the inner shielding layer and the transfer terminal. It has the advantages of good arc extinguishing effect, small structural design, and low cost. Good resistance to high pressure.

The copper bus bar and two transfer terminals can be processed with T2 red copper material, which is a disconnected terminal structure. It is easy to assemble and can be plugged and pulled out at will for easy maintenance. A tip discharge is generated, and the disconnected terminal structure has a circulation groove and does not generate a loop eddy current.

Compared with the existing products, this V-shaped solid insulated cabinet hard busbar connection device is smaller in size, saving raw materials and installation labor costs. After locking, there is no gap in the interference fit contact. The copper busbar can withstand the high current of multiple parallel cabinets, electrical appliances Stable performance, no loop eddy current generation, power frequency withstand voltage, partial discharge, lightning impact, temperature rise test, all conform to the national grid standard and the southern power grid standard.

If there is a problem with the busbar cabinet, the disconnected terminals do not need to be completely removed. They can be disassembled and pulled out individually according to the problematic connection components. After maintenance and cleaning, the connection components can be inserted to facilitate troubleshooting of various electrical performance problems. The whole set of products does not need Assemble to prevent the product from being scratched, and install it directly on site according to the center distance, making the product more portable.

Description of drawings

Fig. 1 is a diagram of the use status of the embodiment of the V-shaped solid insulation cabinet hard bus connection device.

Fig. 2 is a structural schematic diagram of an embodiment of the V-shaped solid insulated cabinet hard bus connection device.

Fig. 3 is a left side view of Fig. 2 .

Fig. 4 is a schematic structural diagram of the connecting busbar in the embodiment of the hard busbar connecting device of the V-shaped solid insulated cabinet.

Fig. 5 is a cross-sectional view of the left side view of the T-shaped plug in the embodiment of the V-shaped solid insulating cabinet hard busbar connection device.

Fig. 6 is a partial cross-sectional view of the left side view of the first connection assembly in the embodiment of the V-shaped solid insulated cabinet hard busbar connection device.

Detailed ways

In order to make the above purpose, features and advantages of the present utility model more obvious and understandable, the specific implementation of the present utility model will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a full understanding of the present invention. However, the utility model can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below .

The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only and are not intended to represent the only embodiments.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of this invention. The terminology used in the description of the utility model herein is only for the purpose of describing specific embodiments, and is not intended to limit the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

See Figures 1 through 6.

This V-shaped solid insulated cabinet hard busbar connection device includes three sets of connecting wire assemblies, the three sets of connecting wire assemblies are respectively the first connecting assembly 1, the second connecting assembly 2 and the third connecting assembly 3, and the first connecting assembly 1 is respectively connected The second connection assembly 2 connects the terminal posts of the B-phase electricity of the two busbar cabinets respectively, and the third connection assembly 3 connects the terminal posts of the C-phase electricity of the two busbar cabinets respectively.

Wherein, the V-shaped copper bus bar 11b connecting the bus bar 11 in the first connection assembly 1 has a bend toward the rear side, the center line of the connection bus bar 11 of the second connection assembly 2 is in the same vertical plane, and the third connection assembly 3 The V-shaped copper bus bar 11b connecting the bus bar 11 is bent toward the front side.

The structures of the first connecting component 1 , the second connecting component 2 and the third connecting component 3 are basically the same, and the related structure of the connecting wire component will be described below taking the first connecting component 1 as an example.

Each set of connecting wire assemblies includes a connecting bus bar 11 , two T-shaped plugs 12 , two connecting bolts 13 , two connecting nuts 14 , two insulating plugs 15 and two rear plugs 16 .

The connecting bus bar 11 includes a bus bar sheath 11a, a V-shaped copper bus bar 11b and two transfer terminals 11c. 11c, two T-shaped plugs 12, two connecting bolts 13, two insulating plugs 15, two rear plugs 16 and two connecting nuts 14 are all in one-to-one correspondence, and the transfer terminal 11c is provided with connecting bolts 13, the two transfer terminals 11c are respectively welded and fixed to the two ends of the V-shaped copper bus bar 11b.

The V-shaped copper bus bar 11b and the two transfer terminals 11c connected to the bus bar 11 are all made of T2 red copper material. The V-shaped copper bus bar 11b and the two transfer terminals 11c can withstand large currents. The V-shaped copper bus bar 11b and the two The silver-plated surface of each transfer terminal 11c has a neat and flawless appearance and will not generate creeping discharge.

The T-shaped plug 12 comprises a first plug portion 12a, a second plug portion 12b and a third plug portion 12c, the first plug portion 12a and the second plug portion 12b are horizontally arranged respectively, and the center line of the third plug portion 12c is aligned with the first plug portion The centerline of 12a is vertical, the end surface of the first plug part 12a is provided with a first assembly groove 12d that fits the terminal of the bus cabinet, the end surface of the second plug part 12b is provided with a second assembly groove 12e, and the end surface of the third plug part 12c is provided with a fitting Connect the third assembly groove 12f at the end of the busbar 11, and the T-shaped plug 12 is also provided with a fourth assembly groove 12g communicating with the first assembly groove 12d, the second assembly groove 12e and the third assembly groove 12f, and the fourth assembly groove 12g The outline coincides with the outer outline of the transfer terminal 11c connected to the bus bar 11 .

The insulating plug 15 is located in the second fitting groove 12e corresponding to the T-shaped plug 12. The outer contour of the insulating plug 15 matches the contour of the second fitting groove 12e. card slot.

The rear plug 16 is detachably connected to the end surface of the second plug portion 12b of the T-shaped plug 12 .

The T-shaped plug 12 is an integrated structure. The T-shaped plug 12 includes a hard shell 12h on the outside and an insulating layer 12j on the inside. The first assembly groove 12d, the second assembly groove 12e, the third assembly groove 12f and the fourth assembly groove 12g are all in the insulating layer 12j.

The fourth fitting groove 12g of the T-shaped plug 12 and the side walls of the joints with the first fitting groove 12d, the second fitting groove 12e and the third fitting groove 12f are all provided with an inner shielding layer 12k.

There is an interference fit between the transfer terminal 11c connecting the bus bar 11 and the corresponding fourth assembly groove 12g of the T-shaped plug 12, and the interference fit between the fourth assembly groove 12g and the transfer terminal 11c is 3 mm.

The two busbar cabinets are the bus section cabinet 41 and the bus lifting cabinet 42 respectively. The three sets of terminal posts of the bus sectioning cabinet 41 and the bus lifting cabinet 42 are respectively connected with three sets of connecting line assemblies. The first plug part 12a of the T-shaped plug 12 Set on the outside of the corresponding terminal, the end of the connecting busbar 11 extends into the third assembly groove 12f of the third plug part 12c, the transfer terminal 11c of the connecting busbar 11 is in the fourth assembly groove 12g, and the connecting bolt 13 runs through the The through hole of the terminal 11c is connected and matched with the threaded hole of the corresponding terminal.

The connecting bolt 13 is first matched with the corresponding connecting nut 14 and then passes through the through hole of the corresponding transfer terminal 11c, and is matched with the threaded hole of the corresponding terminal. After adjusting the error by rotating the adapter terminal 11c, screw the connecting nut 14 to prevent sliding, and then complete the installation of the first connecting component 1, the second connecting component 2 and the third connecting component 3 in sequence, which can be completed by one person.

What has been described above is only an embodiment of the utility model, and it should be pointed out that for those of ordinary skill in the art, some modifications and improvements can also be made without departing from the principle of the utility model, and these should also be Be deemed to belong to the protection scope of the present utility model.

Claims (8)

1. A V-shaped solid insulated cabinet hard bus connection device, characterized by: It includes three sets of connecting wire assemblies, which include connecting busbars, two T-shaped plugs and two connecting bolts; The connecting busbar includes a busbar sheath, a copper busbar and two transfer terminals, the busbar sheath is insulating material, the busbar sheath is wrapped on the outside of the copper busbar, two transfer terminals, two T-shaped plugs and two connection terminals The bolts have a one-to-one correspondence relationship, and the transfer terminal is provided with a through hole for matching with the connecting bolt, and the two transfer terminals are respectively fixedly connected to the two ends of the copper busbar; The T-shaped plug includes a first plug part, a second plug part and a third plug part, the first plug part and the second plug part are respectively arranged horizontally, the center line of the third plug part is perpendicular to the center line of the first plug part, The end surface of the first plug part is provided with a first assembly groove that fits the terminal of the bus cabinet, the end surface of the second plug part is provided with a second assembly groove, and the lower end surface of the third plug part is provided with a third assembly groove that fits the end of the bus bar. The T-shaped plug is also provided with a fourth assembly groove connecting the first assembly groove, the second assembly groove and the third assembly groove, and the outline of the fourth assembly groove matches the outer outline of the transfer terminal connected to the busbar; The three sets of terminal posts of the two busbar cabinets are respectively connected with the three sets of connecting wire assemblies. The first plug part of the T-shaped plug is set outside the corresponding terminal post, and the end of the connecting bus bar extends into the third assembly groove of the third plug part. , the transfer terminal connected to the bus bar is located in the fourth assembly groove, and the connecting bolt passes through the through hole of the transfer terminal and fits with the threaded hole of the corresponding terminal. 2. The V-shaped solid insulated cabinet hard bus connection device according to claim 1, characterized in that: The connection wire assembly also includes two connection nuts, the two connection nuts are in one-to-one correspondence with the two connection bolts, and the connection bolts first cooperate with the corresponding connection nuts and then pass through the through holes of the corresponding transfer terminals, and connect with the corresponding terminal The threaded hole fits. 3. The V-shaped solid insulated cabinet hard bus connection device according to claim 2, characterized in that: The connecting wire assembly also includes two insulating plugs, the two insulating plugs and the two T-shaped plugs correspond to the two connecting bolts one by one, and the insulating plugs are located in the second assembly grooves of the corresponding T-shaped plugs. The outer contour of the insulating plug matches the contour of the second assembly groove, and the end surface of the insulating plug is also provided with a slot for accommodating connecting bolts and connecting nuts. 4. The V-shaped solid insulated cabinet hard bus connection device according to claim 1, characterized in that: The connecting line assembly also includes two rear plugs corresponding to the two T-shaped plugs one by one, and the rear plugs are detachably connected to the end surface of the second plug part of the T-shaped plug. 5. The V-shaped solid insulation cabinet hard bus connection device according to claim 1, characterized in that: The T-shaped plug is an integrated structure, and the T-shaped plug includes an outer shell and an inner insulating layer, and the first fitting groove, the second fitting groove, the third fitting groove and the fourth fitting groove are all located in the insulating layer. 6. The V-shaped solid insulated cabinet hard bus connection device according to claim 5, characterized in that: The fourth fitting groove of the T-shaped plug and the side walls of the joints with the first fitting groove, the second fitting groove and the third fitting groove are all provided with inner shielding layers. 7. The V-shaped solid insulated cabinet hard bus connection device according to claim 6, characterized in that: An interference fit is provided between the transfer terminal connecting the bus bar and the corresponding fourth assembly groove of the T-shaped plug. 8. The V-shaped solid insulated cabinet hard bus connection device according to claim 1, characterized in that: The three sets of connecting line components are the first connecting component, the second connecting component and the third connecting component respectively. The first connecting component is respectively connected to the terminals of the A-phase electricity of the two busbar cabinets, and the second connecting component is respectively connected to the two busbar cabinets. The terminal of the B-phase electricity, and the third connecting component is respectively connected to the terminal of the C-phase electricity of the two busbar cabinets; The copper bus bars connected to the bus bars in the first connection assembly are bent toward the rear side, and the copper bus bars connected to the bus bars in the third connection assembly are bent toward the front side.

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