CN114203479A

CN114203479A - Circuit breaker structure

Info

Publication number: CN114203479A
Application number: CN202111593183.9A
Authority: CN
Inventors: 曹玉生
Original assignee: Shanghai Bapei Switch Equipment Co ltd
Current assignee: Shanghai Bapei Switch Equipment Co ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2022-03-18
Anticipated expiration: 2041-12-23
Also published as: CN114203479B

Abstract

The invention discloses a circuit breaker structure, comprising: a first fixed seat, the first fixed seat is connected with at least four flexible connections; a conductive block 1 is arranged in the middle of the four flexible connections; the outer top of the first fixed seat There is a second conducting block, and the second conducting block is provided with a heat dissipation component; a guide sleeve, the guide sleeve is connected with the bottom of the first fixed seat, the guide sleeve is connected with a vacuum interrupter, and one end of the vacuum interrupter is inserted into the guide The sleeve and the conductive block 1 are connected with an insulating pull rod, and the other end is connected with a conductive rod. The conductive rod is fixed by the second fixed seat, and the conductive rod is equipped with a radiator; the front plate, the first fixed seat and the second fixed seat. One side is fixed by the first insulating support rod, and the other side is fixed by the second insulating support rod; the first insulating support rod and the two ends of the insulating support rod are fixed on the front plate; the front plate is provided with a corrugated pipe, so the The bellows is connected with the insulating pull rod, and the bellows is connected with the operating mechanism.

Description

Circuit breaker structure

Technical Field

The invention relates to a breaker structure, and belongs to the technical field of electrical equipment.

Background

In medium and high voltage electrical appliances, circuit breakers are mainly used to control and protect electrical power systems. The gas insulated switchgear is mainly switched on and off by a circuit breaker. The pole of the existing circuit breaker is poured by epoxy resin, so that the heat dissipation effect is very poor. The whole circuit breaker is installed in a totally-enclosed stainless steel plate air box, air circulation is not facilitated, and a large amount of heat can be generated when a main circuit of the circuit breaker passes through large current. When the temperature rise of the circuit breaker exceeds the standard, the insulation safety of equipment can be seriously influenced. Too high a temperature can cause insulation aging to shorten the life of the switch and even cause insulation breakdown.

Disclosure of Invention

The invention aims to provide a circuit breaker structure, which aims to overcome the defect that the pole of the existing circuit breaker is cast by epoxy resin and the heat dissipation effect is particularly poor.

A circuit breaker structure comprising:

the first fixing seat is connected with at least four flexible connections; a first conductive block is arranged among the four flexible connections, and a first radiator is sleeved on the conductive rod; the top of the outer side of the first fixed seat is provided with a second conductive block, and the second conductive block is provided with a heat dissipation assembly;

the guide sleeve is connected with the bottom of the first fixing seat, the guide sleeve is connected with a vacuum arc extinguish chamber, one end of the vacuum arc extinguish chamber is inserted into the guide sleeve and the first conducting block and is connected with an insulating pull rod, the other end of the vacuum arc extinguish chamber is connected with a conducting rod, and the conducting rod is fixed through the second fixing seat and is used for being connected with a copper bar;

one side of the first fixed seat and one side of the second fixed seat are fixed through the first insulating support rod, and the other side of the first fixed seat and the second fixed seat are fixed through the second insulating support rod; the first insulating support rod and the second insulating support rod are fixed on the front plate; the front plate is provided with a corrugated pipe, one end of the corrugated pipe is connected with the insulating pull rod, and the other end of the corrugated pipe is connected with an external operating mechanism.

Furthermore, the first radiator is provided with an inner hole which is sleeved on the conducting rod.

Furthermore, the heat dissipation assembly comprises at least two second radiators and a third radiator, wherein one second radiator is arranged at the end part of the second conductive block, and the other second radiator and the third radiator are arranged at two sides of the tail end of the second conductive block.

Furthermore, an inner hole for inserting the front end of the vacuum arc-extinguishing chamber is formed in the middle of the first conducting block.

Further, the vacuum arc-extinguishing chamber is provided with three groups, which are divided into A, B, C three phases.

Further, the front plate is provided with a pressure plate for fixing the corrugated pipe.

Compared with the prior art, the invention has the following beneficial effects: the invention adopts an open structure to facilitate heat dissipation, and the front end and the tail end of the vacuum arc extinguish chamber are added with the radiators, so that better heat dissipation can be realized; and meanwhile, the manufacturing cost of the switch cabinet is also reduced.

Drawings

FIG. 1 is a schematic view of the installation of the structure of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1 of the present invention;

FIG. 3 is a schematic view of a flexible connection and conductive block structure according to the present invention;

figure 4 is a schematic diagram of the circuit breaker configuration of the present invention;

in the figure: 1. a first conductive block; 2. soft connection; 3. a first fixed seat; 4. a guide sleeve; 5. a vacuum arc-extinguishing chamber; 6. a second fixed seat; 7. a first radiator; 8. a conductive rod; 9. a first insulating support rod; 10. a second radiator; 11. a third radiator; 13. A second conductive block; 14. an insulating pull rod; 15. a front plate; 16. a bellows; 17. pressing a plate; 18. a fixing plate; 19. and a second insulating support rod.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As fig. 1-4, a circuit breaker structure is disclosed, comprising:

the first fixing seat 3 is connected with at least four flexible connections 2; a first conductive block 1 is arranged among the four flexible connections 2, a first radiator 7 is sleeved on the conductive rod 8, and an inner hole for sleeving the conductive rod 8 is formed in the first radiator 7; the top of the outer side of the first fixed seat 3 is provided with a second conducting block 13, and the second conducting block 13 is provided with a radiating component;

the guide sleeve 4 is connected with the bottom of the first fixing seat 3, the guide sleeve 4 is connected with a vacuum arc extinguish chamber 5, one end of the vacuum arc extinguish chamber 5 is inserted into the guide sleeve 4 and the first conducting block 1 and is connected with an insulating pull rod 14, the other end of the vacuum arc extinguish chamber is connected with a conducting rod 8, and the conducting rod 8 is fixed through a second fixing seat 6 and is used for being connected with a copper bar;

one side of the first fixed seat 3 and one side of the second fixed seat 6 are fixed through a first insulating support rod 9, and the other side of the first fixed seat and the other side of the second fixed seat are fixed through a second insulating support rod 19; the end parts of the first insulating support rod 9 and the second insulating support rod 19 are fixed on the front plate 15; the front plate 15 is provided with a corrugated pipe 16, one end of the corrugated pipe 16 is connected with the insulating pull rod 14, and the other end of the corrugated pipe 16 is connected with an external operating mechanism.

In this embodiment, the heat dissipation assembly includes at least two second heat sinks 10 and one third heat sink 11, wherein one second heat sink 10 is disposed at an end of the second conductive block 13, and the other second heat sink 10 and the other third heat sink 11 are disposed at two sides of a tail end of the second conductive block 13, so as to improve a heat dissipation effect;

when the vacuum arc-extinguishing chamber is installed, an inner hole for inserting the front end of the vacuum arc-extinguishing chamber 5 is formed in the middle of the first conducting block 1.

As shown in fig. 4, the vacuum interrupter 5 is provided with three groups, which are A, B, C three phases.

When mounted, the front plate 15 is provided with a pressure plate 17 for fixing the bellows 16.

The use process comprises the following steps: when the circuit breaker needs to be disconnected, the operating mechanism operates the moving end of the vacuum arc-extinguishing chamber to separate the moving contact from the fixed contact in the vacuum arc-extinguishing chamber; and when the breaker needs to be switched on, the operating mechanism operates the moving end of the vacuum switch tube to enable the moving contact to be contacted with the fixed contact. The corrugated pipe is used for transmission and sealing, the insulating pull rod is used for transmission and insulation, the insulating support rod is used for fixing and insulation, and the corrugated pipe 1, the first conducting block 2, the flexible connection 8, the conducting rod 13, the second conducting block 3 and the first fixing seat are used for fixing and conducting current; 6. the fixing seat is used for fixing; 4. The guide sleeve is used for guiding and protecting the vacuum arc extinguish chamber from shaking; 5. the vacuum arc-extinguishing chamber is used for switching on and switching off; 7. The radiator I10, the radiator II 11 and the radiator three-purpose radiator 14 are used for radiating heat, and the insulating pull rod is used for transmission and insulation; 16. The corrugated pipe is used for transmission and sealing; 15. the front plate 17, the pressure plate 18 and the fixing plate are used for fixing; 19. the second insulating support rod 9 and the first insulating support rod are used for fixing and insulating.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A circuit breaker structure, comprising:

the fixed seat I (3), the fixed seat I (3) is connected with at least four flexible connections (2); a first conductive block (1) is arranged between the four soft connections (2), and a first radiator (7) is sleeved on the conductive rod (8); a second conducting block (13) is arranged at the top of the outer side of the first fixing seat (3), and a radiating component is arranged on the second conducting block (13);

the guide sleeve (4) is connected with the bottom of the first fixing seat (3), the guide sleeve (4) is connected with a vacuum arc-extinguishing chamber (5), one end of the vacuum arc-extinguishing chamber (5) is inserted into the guide sleeve (4) and the first conducting block (1) and is connected with an insulating pull rod (14), the other end of the vacuum arc-extinguishing chamber is connected with a conducting rod (8), and the conducting rod (8) is fixed through the second fixing seat (6) and is used for being connected with a copper bar;

one sides of the first fixing seat (3) and the second fixing seat (6) are fixed through a first insulating support rod (9), and the other sides of the first fixing seat and the second fixing seat are fixed through a second insulating support rod (19); the end parts of the first insulating support rod (9) and the second insulating support rod (19) are fixed on the front plate (15); the front plate (15) is provided with a corrugated pipe (16), one end of the corrugated pipe (16) is connected with the insulating pull rod (14), and the other end of the corrugated pipe (16) is connected with an external operating mechanism.

2. A circuit breaker structure according to claim 1, characterized in that said first heat sink (7) is provided with an inner hole for fitting over the conducting rod (8).

3. A circuit breaker structure according to claim 1, wherein said heat sink assembly comprises at least two second heat sinks (10) and one third heat sink (11), wherein one second heat sink (10) is disposed at the end of said second conductive block (13), and the other second heat sink (10) and said third heat sink (11) are disposed at both sides of the end of said second conductive block (13).

4. A circuit breaker structure according to claim 1, characterized in that said first conducting block (1) is provided with an inner hole in the middle for inserting the front end of the vacuum interrupter (5).

5. A circuit breaker structure according to any one of claims 1-4, characterized in that said vacuum interrupters (5) are provided in three groups, A, B, C three phases.

6. A circuit breaker arrangement according to claim 1, characterized in that the front plate (15) is provided with a pressure plate (17) for fixing the bellows (16).