CN217306390U - Vacuum circuit breaker main loop for environment-friendly gas-filled cabinet - Google Patents
Vacuum circuit breaker main loop for environment-friendly gas-filled cabinet Download PDFInfo
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- CN217306390U CN217306390U CN202123237542.5U CN202123237542U CN217306390U CN 217306390 U CN217306390 U CN 217306390U CN 202123237542 U CN202123237542 U CN 202123237542U CN 217306390 U CN217306390 U CN 217306390U
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- outgoing line
- matched
- vacuum
- circuit breaker
- vacuum arc
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Abstract
The utility model belongs to the technical field of circuit breakers, and discloses a vacuum circuit breaker main loop for an environment-friendly gas-filled cabinet, which comprises a stationary end outgoing line and a mounting bracket which are arranged oppositely, wherein the mounting bracket is made of steel plate, and a pair of insulating clamping plates is arranged between the stationary end outgoing line and the mounting bracket; a vacuum arc extinguish chamber matched with the static end outgoing line is arranged between the two insulating clamping plates, the static end of the vacuum arc extinguish chamber is matched with the static end outgoing line so as to form a current path, and a conductive clamping block is matched with the movable end of the vacuum arc extinguish chamber; the conductive clamping block is matched with a movable end outlet wire through flexible connection; a radiator is arranged on the position, corresponding to the movable end outgoing line, of the insulating clamp plate; the utility model discloses simple structure, spare part open, through-flow capacity is strong.
Description
Technical Field
The utility model belongs to the technical field of the circuit breaker, a vacuum circuit breaker major loop is related to, in particular to vacuum circuit breaker major loop for environmental protection gas inflation cabinet.
Background
At present, the design of the main circuit of the vacuum circuit breaker for the domestic environment-friendly gas-filled cabinet basically adopts a solid-sealed polar pole or a solid-sealed polar pole, an arc extinguish chamber, an upper conductive part and a lower conductive part are encapsulated in epoxy resin, and an insulating medium in an air chamber is dry air and is matched with SF 6 The heat dissipation efficiency of gas is relatively low, and the temperature rise requirement of large current cannot be met.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing a simple structure, spare part open, the discharge capacity is strong, satisfy 3150A rated current's environmental protection gas in the air chamber under the dry air condition and aerify vacuum circuit breaker main loop for cabinet.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a vacuum circuit breaker main loop for an environment-friendly gas-filled cabinet comprises a static end outgoing line and an installation support which are oppositely arranged, wherein the installation support is made of a steel plate material, a pair of insulating clamping plates are arranged between the static end outgoing line and the installation support, and the insulating clamping plates are made of epoxy glass cloth plates; a vacuum arc extinguish chamber matched with the static end outgoing line is arranged between the two insulating clamping plates, the static end of the vacuum arc extinguish chamber is matched with the static end outgoing line so as to form a current path, and a conductive clamping block is matched with the movable end of the vacuum arc extinguish chamber; the conductive clamping block is matched with a movable end outgoing line through flexible connection; the position on the insulating clamp plate corresponding to the movable end outgoing line is provided with a radiator.
Furthermore, the section of the static end outgoing line is T-shaped, and the lower part of the static end outgoing line is connected with the static end face of the vacuum arc-extinguishing chamber through a bolt to form a current path.
Furthermore, a connecting hole is formed in the conductive clamping block, and a bolt matched with a movable guide rod of the vacuum arc extinguish chamber is arranged in the connecting hole.
Furthermore, the flexible connection is a non-closed ring structure formed by bending a copper foil, two pairs of flexible connections are respectively arranged at the upper end and the lower end of the conductive clamping block, and the conductive clamping blocks are connected with the four flexible connections, so that the contact resistance of the overlapping surface is reduced.
Furthermore, the radiator adopts aluminium fin formula, and the radiator symmetry sets up on two insulating splint.
Furthermore, the flexible connection is respectively in static fit with the conductive clamping block and the movable end outgoing line; the connecting hole is connected with a movable guide rod of the vacuum arc-extinguishing chamber in a static fit manner through a bolt; the static end outgoing line, the movable end outgoing line and the conductive clamping block are all made of calcined red copper; the static end of the vacuum arc extinguish chamber is tightly attached to the end surface of the outgoing line at the static end.
Compared with the prior art, the beneficial effects of the utility model are as follows: the radiator of the utility model is separated from the conductive loop, thereby reducing the manufacturing cost, having large heat dissipation area, leading the main loop to have larger temperature rise margin, reducing the difficulty of assembly and manufacture and having good mechanical performance; the utility model is mainly used for the vacuum circuit breaker with rated voltage of 3.6-12 kV, rated current of 3150A and rated short circuit breaking current of 40 kA; the utility model discloses can satisfy rated current 1.1 times temperature rise requirement, satisfy the gaseous vacuum circuit breaker for gas insulated switchgear's of environmental protection electricity life-span requirement, satisfy the mechanical life requirement of circuit breaker M2 level, can carry out the deciliter operation that is greater than 10000 times.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic view of the internal structure of the present invention;
FIG. 4 is a schematic structural diagram of a stationary-end outgoing line;
FIG. 5 is a schematic structural diagram of a movable-end outgoing line;
FIG. 6 is a schematic diagram of a flexible connection;
FIG. 7 is a schematic diagram of a conductive clip;
FIG. 8 is a schematic view of a heat sink;
FIG. 9 is a schematic structural view of an insulating clamping plate;
fig. 10 is a schematic view of the mounting bracket.
Wherein: the device comprises a static end outgoing line 1, a vacuum arc extinguish chamber 2, a movable end outgoing line 3, a radiator 4, a flexible connection 5, a conductive clamping block 6, an insulating clamping plate 7, a mounting bracket 8 and a connecting hole 9.
Detailed Description
A main circuit of a vacuum circuit breaker for an environment-friendly gas-filled cabinet is shown in figures 1-10 and comprises a static end outgoing line 1 and a mounting bracket 8 which are oppositely arranged, wherein the mounting bracket 8 is made of a steel plate material, a pair of insulating clamping plates 7 is arranged between the static end outgoing line 1 and the mounting bracket 8, and the insulating clamping plates 7 are made of epoxy glass cloth plates; a vacuum arc extinguish chamber 2 matched with the static end outgoing line 1 is arranged between the two insulating clamping plates 7, the static end of the vacuum arc extinguish chamber 2 is matched with the static end outgoing line 1 to form a current path, and a conductive clamping block 6 is matched with the movable end of the vacuum arc extinguish chamber 2; the conductive clamping block 6 is matched with a movable end outlet 3 through a flexible connection 5, and the movable end outlet 3 is of a vertically-arranged double-arm structure; the position of the insulating clamp plate 7 corresponding to the movable end outgoing line 3 is provided with a radiator 4.
The section of the static end outgoing line 1 is T-shaped, and the lower part of the static end outgoing line 1 is connected with the static end face of the vacuum arc-extinguishing chamber 2 through a bolt to form a current path; a connecting hole 9 is formed in the conductive clamping block 6, a through hole is further formed in the center of the conductive clamping block 6, and a bolt is arranged in the connecting hole 9 and matched with a movable guide rod of the vacuum arc extinguish chamber 2; the flexible connection 5 is a non-closed ring structure formed by bending a copper foil, two pairs of flexible connections 5 are arranged at the upper end and the lower end of the conductive clamping block 6 respectively, and the openings of the flexible connections 5 at the upper position and the lower position face to one side far away from the conductive clamping block 6; the conductive clamping blocks 6 are connected with the four flexible connections 5, so that the contact resistance of the faying surface is reduced; the radiator 4 adopts aluminum radiating fins, and the radiator 4 is symmetrically arranged on the two insulating clamping plates 7; the flexible connection 5 is respectively in static fit with the conductive clamping block 6 and the movable end outgoing line 3; the connecting hole 9 is connected with a movable guide rod of the vacuum arc-extinguishing chamber 2 in a static fit manner through a bolt; the static end outgoing line 1, the moving end outgoing line 3 and the conductive clamping block 6 are all made of calcined red copper; the static end of the vacuum arc extinguish chamber 2 is tightly attached to the end surface of the static end outgoing line 1.
When the circuit breaker is used, the operating mechanism drives the moving end of the vacuum arc extinguish chamber 2 to do left and right reciprocating motion through the connecting rod, so that the opening and closing operation functions of the circuit breaker are completed, and the purposes of controlling and protecting electrical equipment are achieved; the utility model discloses the experiment proves that satisfy 1.1 times of rated current 3150A under the dry air condition in the air chamber and be 3465A's operation requirement, the electrodynamic force that high strength bearing structure satisfied 100kA peak current and produced.
Claims (5)
1. A vacuum circuit breaker main circuit for an environment-friendly gas-filled cabinet is characterized by comprising a static end outgoing line and a mounting bracket which are oppositely arranged, wherein the mounting bracket is made of a steel plate material, and a pair of insulating clamping plates is arranged between the static end outgoing line and the mounting bracket; a vacuum arc extinguish chamber matched with the outgoing line at the static end is arranged between the two insulating clamping plates, the static end of the vacuum arc extinguish chamber is matched with the outgoing line at the static end, and a conductive clamping block is matched with the movable end of the vacuum arc extinguish chamber; the conductive clamping block is matched with a movable end outlet wire through flexible connection; and a radiator is arranged on the insulating clamping plate corresponding to the outlet wire at the movable end.
2. The main circuit of the vacuum circuit breaker according to claim 1, wherein the section of the stationary outlet is T-shaped, and the lower part of the stationary outlet is connected with the stationary end face of the vacuum interrupter by a bolt to form a current path.
3. The main circuit of vacuum circuit breaker according to claim 2, characterized in that the conductive clamping block is provided with a connecting hole, and a bolt is arranged in the connecting hole to match with a movable guide rod of the vacuum arc-extinguishing chamber.
4. The main circuit of claim 3, wherein the flexible connection is a non-closed loop structure formed by bending a copper foil, two pairs of flexible connections are respectively disposed at the upper and lower ends of the conductive clamping blocks, and the conductive clamping blocks are connected with the four flexible connections, so as to reduce contact resistance of the faying surfaces.
5. The main circuit of vacuum circuit breaker according to claim 4, characterized in that the heat sink is made of aluminum fins, and the heat sink is symmetrically arranged on the two insulating clamping plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123237542.5U CN217306390U (en) | 2021-12-22 | 2021-12-22 | Vacuum circuit breaker main loop for environment-friendly gas-filled cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123237542.5U CN217306390U (en) | 2021-12-22 | 2021-12-22 | Vacuum circuit breaker main loop for environment-friendly gas-filled cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217306390U true CN217306390U (en) | 2022-08-26 |
Family
ID=82920588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123237542.5U Active CN217306390U (en) | 2021-12-22 | 2021-12-22 | Vacuum circuit breaker main loop for environment-friendly gas-filled cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217306390U (en) |
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2021
- 2021-12-22 CN CN202123237542.5U patent/CN217306390U/en active Active
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