WO2011063626A1

WO2011063626A1 - Bus connector

Info

Publication number: WO2011063626A1
Application number: PCT/CN2010/073077
Authority: WO
Inventors: 梁锐权
Original assignee: 佛山市顺德区永丰机电设备实业有限公司
Priority date: 2009-11-27
Filing date: 2010-05-21
Publication date: 2011-06-03
Also published as: CN101707294A

Abstract

A bus connector comprises an insulating coating (1) and a bracket (3) provided in the inner cavity of the insulating coating. The bracket has the shape of a cylinder. The side wall of the bracket is provided with multiple locking slots (31). A contact piece (41,42) is located in each locking slot. Lengths of the contact pieces in adjacent locking slots are different so as to form two or more groups of contact piece groups (4) with different lengths. The contact pieces with different lengths in the contact piece groups are orderly mounted in the locking slots of the bracket at intervals to form two or more turns of contact piece contact rings (5) at two ends of the bus connector. Spring mechanisms (6) are formed around two ends of the contact piece groups. The bus connector increases electrical contact area between the contact piece and the bar-shaped contact of the ring main unit, so as to spread the contact heating points, reduce the local temperature rise, and improve conductivity.

Description

[Name of invention made by ISA in accordance with Rule 37.2] A busbar connector

Technical field

The invention relates to a novel busbar connector, which is suitable for medium voltage power distribution equipment, such as connection of SF6 ring network cabinet column and other fully sealed and fully insulated plug connection. It belongs to the field of power distribution technology.

Background technique

At present, after the SF6 ring network cabinet uses the busbar connector, the ring network cabinet can be expanded by any combination of connections. Because the busbar connector is simple and quick to install, the complete ring network cabinet enterprise can form batch standard production or advance stocking production of a single cabinet. After receiving the contract order, the cabinet can be flexibly and quickly combined according to customer requirements. , shorten the delivery cycle. Referring to FIG. 4, in the prior art, the busbar connector is mainly composed of an insulating jacket 1, a pressure equalizing cylinder 2 disposed in the insulating jacket 1, a bracket 3 located inside the pressure equalizing cylinder 2, and a set of silver-plated copper contacts 4. The copper contact piece 4 is annularly embedded in the bracket 3 in the insulating jacket, so that both ends of the busbar connector are formed with a ring contact ring 5, and are pulled at the outer circumference thereof by the non-magnetic spring 6. Solid, the contact ring 5 is brought into annular contact with the bar contact 8 in the contact box 7 of the ring cabinet. The insulating jacket is made of high temperature resistant and anti-aging silicone rubber insulation material; its main technical parameters are: rated voltage: 12 (24) KV, rated current: 630A. The busbar connector of this structure is fully shielded, fully insulated, fully sealed, fully protected, compact in structure, good in expandability, and has excellent insulation properties and flow capacity. However, it also has the following disadvantages: 1. The contact between the contact ring of the contact piece and the bar contact of the ring network cabinet is prone to excessive temperature rise, and there is a disadvantage of shortening the service life of the bus bar connector and wasting energy; When the rod contact of the ring network cabinet is pushed into the contact ring of the contact piece, it will be subjected to great resistance, which makes the splicing of the cabinet laborious; 3. The contact between the rod contact of the ring network cabinet and the ring type copper contact piece is limited. The area is small and its conductivity needs to be improved.

Summary of the invention

The technical problem to be solved by the present invention is that the object of the present invention is to overcome the above-mentioned shortcomings of the existing busbar connector, and to provide a good electrical conductivity, low temperature rise, low power saving, long service life and low energy consumption. New busbar connector.

The object of the invention can be achieved by the following measures:

A novel busbar connector comprises an insulating jacket and a bracket located in the inner cavity of the insulating jacket; the bracket is cylindrical, the side wall of the bracket is provided with a plurality of card slots; and a contact piece is arranged in each card slot The contact lengths of the adjacent two card slots are different, and two or more contact groups of different lengths are formed, and the contact groups of different lengths are sequentially installed in the card slots of the bracket, so that Two ends or two or more contact contact rings are formed at both ends of the busbar connector, and a spring mechanism is hooped at both ends of the contact group.

The object of the invention can also be achieved by the following measures:

One embodiment of the present invention is that the contact groups of different lengths may include long contacts and short contacts, and the long contacts and the short contacts are sequentially installed in the card slots of the bracket to make the two of the bus connectors. The ends are each formed with a first contact ring and a second contact ring.

One embodiment of the present invention is that a pressure equalizing cylinder can be disposed between the insulating jacket and the bracket.

One embodiment of the invention is that the pressure equalization cylinder can be constructed from an aluminum tube.

One embodiment of the present invention is that the insulating jacket can be made of silicone rubber and its inner wall has a fully insulated, fully shielded structure.

One embodiment of the invention is that the number of card slots can be equal to the sum of the number of all contacts.

One embodiment of the present invention is that the contact piece can be cold pressed with high conductivity and high density of copper, and the surface thereof is plated with a layer of silver.

The beneficial effects of the invention are:

The present invention provides two or more sets of contacts having different lengths, so that two connection ends are formed with two or more contact contact rings. Therefore, there are the following advantages that distinguish the prior art:

1. Increasing the effective area of electrical contact between the contact piece and the bar contact of the ring network cabinet, dispersing the contact heating point, improving the local temperature rise and providing high conductivity.

2. The same contact piece is divided into two groups, which reduces the resistance when the rod contact of the ring network cabinet is pushed into the contact ring of the busbar connector, so that the splicing between the cabinets is more labor-saving.

3. The diameter of the rod contact of the ring network cabinet can be increased, and the common Φ12 is changed to Φ13, thereby effectively reducing the current carrying capacity per unit area of the rod type contact and reducing the temperature rise of the conductor, thereby prolonging the service life and reducing the product. For the purpose of energy consumption, the busbar connector of the present invention can also be used with conventional diameter products, and is a new generation of energy-saving products, which will generate great social benefits.

4. The busbar connector of the present invention is widely used in medium voltage power distribution equipment, such as the connection of the SF6 ring network cabinet column and other fully sealed and fully insulated plug connections.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing the entire configuration of a first embodiment of the present invention.

Figure 2 is a perspective view of the contact, bracket and spring of Figure 1 connected.

Figure 3 is a side elevational view of the contact, bracket and spring of Figure 1.

4 is a schematic view showing the overall structure of a bus bar connector in the prior art.

detailed description

Specific embodiment 1:

Referring to Figures 1, 2 and 3, the present embodiment includes an insulating outer casing 1, a pressure equalizing cylinder 2 disposed in the insulating outer casing, and a bracket 3 located in the inner cavity of the insulating outer casing 1. the bracket 3 has a cylindrical shape, and the side of the bracket 3 The wall is provided with a plurality of card slots 31; a contact piece is disposed in each of the card slots 31, and the lengths of the contacts in the adjacent two card slots 31 are different, and two or more contact groups 4 having different lengths are formed. In the contact group 4, the contact strips of different lengths are sequentially installed in the slot 31 of the bracket 3, and the two ends of the busbar connector are formed into two or more loop contact rings 5, in the contact group 4 A spring mechanism 6 is provided at both ends of the hoop.

In this embodiment:

The insulating jacket 1 is made of silicone rubber, and its inner wall is completely insulated and totally shielded. The pressure equalizing cylinder 2 is an aluminum tube. The busbar connector includes two sets of different lengths of contacts 4, the busbar connector comprising two sets of different lengths of contacts 4, the contacts 4 being divided into long contacts 41 and short contacts 42 The number of sheets 41 and short contacts 42 is six. The long contact piece 41 and the short contact piece 42 are sequentially installed in the card slot 31 of the bracket 3 so that two ends of the bus bar connector are formed with two contact contact rings 5, that is, the first contact piece contact ring 51 and the second The contact is in contact with the ring 52. The contacts are cold pressed with high conductivity and high density of copper, and their surfaces are plated with a layer of silver. The contact piece is equipped with a spring contact finger, which has good elasticity, and adopts two ring contact ring design schemes to better ensure the flow capacity of the conductor. A spring mechanism 6 is hooped at both ends of the contact piece 4.

The number of the card slots 31 is equal to the sum of the number of the different lengths of the contacts 4, that is, the number of the card slots 31 is twelve. By arranging the spring mechanism 6 at both ends of the contact piece 4, the movable connection between the contact contact ring of the contact piece and the bar type contact of the ring network cabinet can be effectively realized, and the connection elements are not subjected to additional The torque is disconnected and the device is powered off. By providing a pressure equalizing cylinder between the insulating jacket and the bracket, the electric field distribution in the busbar connector is evenly distributed, and it is not easy to discharge, thereby achieving the technical effect of improving current carrying capacity and stabilizing current.

In practical applications, the ring network cabinet is provided with a contact box 7 for reinforced insulation connected to the busbar connector. A rod-shaped contact 8 is provided in the contact box 7, and the contact box 7 is interference-fitted with the insulating jacket 1 of the busbar connector. After the ring network cabinet is installed, put the two cabinets together and insert the two ends of the busbar connector into the contact boxes 7 of the two ring network cabinets respectively, and then press the force to push the cabinet to form a connection. The user has any requirement to connect and combine. Wherein, the two ends of the busbar connector are respectively connected with the bar type contacts of the two ring network cabinets, and the two or more turns of the contact ring of the busbar connector are connected to the ring of one ring network cabinet at the same time. The contacts are in contact.

The busbar connector of the present embodiment reduces the temperature rise by 9% and reduces the propulsive force by 20% compared with the conventional product, and is a new product with remarkable energy saving effect. At the same time, the diameter of the rod contact of the ring network cabinet connected thereto can be increased, and the Φ12 which is common in the prior art is changed to Φ13, thereby effectively reducing the current carrying capacity per unit area of the rod type contact and reducing the temperature rise of the conductor, thereby reducing the temperature rise of the conductor. To achieve the purpose of prolonging the service life of the product and reducing the energy consumption, the busbar connector of the embodiment can also be used with the conventional diameter (Φ12) product, which is a new generation of energy-saving products, and once promoted, it will generate great social benefits. .

Specific embodiment 2:

The feature of the embodiment is that the busbar connector comprises three sets of contacts 4 having different lengths, and the contacts 4 are installed in the slot 31 of the bracket 3 from the length to the shortest, so that the two ends of the busbar connector Each of the three contact pads 5 is formed. Others are the same as in the specific embodiment 1.

Specific Example 3:

The feature of the embodiment is that the busbar connector comprises four sets of different lengths of contact strips 4, and the contact strips 4 are installed in the slot 31 of the bracket 3 from the length to the shortest, so that the two ends of the busbar connector are Four contact pads 5 are formed. Others are the same as in the specific embodiment 1.

The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any technical person skilled in the art within the scope of the present disclosure, according to the technical solution of the present invention and Equivalent substitutions or changes of the inventive concept are within the scope of the invention.

Claims

A novel busbar connector comprising an insulating jacket (1) and a bracket (3) located in the inner cavity of the insulating jacket (1); characterized in that the bracket (3) is cylindrical and the side wall of the bracket (3) a plurality of card slots (31) are provided; a contact piece is disposed in each of the card slots (31), and the lengths of the contacts in the adjacent two card slots (31) are different, forming two or more touches of different lengths a chip set (4), wherein the contact strips (4) are sequentially installed in the card slots (31) of the brackets (3) with different lengths of contacts, so that two ends of the busbar connectors are formed in two or two turns. The above contact piece contact ring (5) is provided with a spring mechanism (6) at both ends of the contact group (4).

2. A novel busbar connector according to claim 1, wherein said set of contacts (4) of different lengths comprises long contacts (41) and short contacts (42), long contacts ( 41), the short contact piece (42) is sequentially installed in the card slot (31) of the bracket (3), so that the first contact piece contact ring (51) and the second contact piece are formed at both ends of the bus bar connector. Ring (52).

3. A novel busbar connector according to claim 1 or 2, characterized in that a pressure equalizing cylinder (2) is arranged between the insulating jacket (1) and the bracket (3).

4. A novel busbar connector according to claim 3, wherein said equalizing cylinder (2) is constructed of an aluminum tube.

5. A novel busbar connector according to claim 3, wherein said insulating jacket (1) is made of silicone rubber and its inner wall has a fully insulated, fully shielded structure.

6. A novel busbar connector according to claim 3, wherein said contact piece (4) is formed by cold pressing of high conductivity, high density copper, the surface of which is coated with a layer of silver.