CN216980434U

CN216980434U - High-voltage bistable lateral moving type high-speed vacuum circuit breaker

Info

Publication number: CN216980434U
Application number: CN202220863564.8U
Authority: CN
Inventors: 陆卫卫; 钱黎明; 周杰; 陈雨飞; 顾海琴
Original assignee: Nantong Institute of Technology
Current assignee: Nantong Institute of Technology
Priority date: 2022-04-14
Filing date: 2022-04-14
Publication date: 2022-07-15
Anticipated expiration: 2032-04-14

Abstract

The utility model discloses a high-voltage bistable lateral-moving type high-speed vacuum circuit breaker, which comprises a circuit breaker main box body, wherein a plurality of pole bases which are arranged at equal intervals are arranged at the top end of the circuit breaker main box body, an insulating shell is arranged at the top of each pole base, and a lower wire outlet end and an upper wire outlet end are sequentially arranged on the front surface of the insulating shell from bottom to top; a heat dissipation reinforcing sleeve is sleeved at the top of the insulating shell and between the lower wire outlet end and the upper wire outlet end, and a vacuum arc extinguish chamber is arranged at the top in the insulating shell; the bottom is provided with and moves the conducting rod in the vacuum interrupter, moves the conducting rod bottom and is provided with the screw rod, and the screw rod bottom is provided with the insulating pull rod, and the cover is equipped with the buffering connecting piece outside the screw rod circumference. Through being provided with the insulating casing of heat dissipation reinforcement cover, can improve the heat dispersion and the structural strength who seals the utmost point post admittedly greatly, utilize the coolant liquid in the liquid cooling intracavity to guarantee the radiating effect of casing to improve the life who seals utmost point post admittedly.

Description

High-voltage bistable lateral moving type high-speed vacuum circuit breaker

Technical Field

The utility model relates to the field of high-voltage electrical equipment, in particular to a high-voltage bistable lateral-moving type high-speed vacuum circuit breaker.

Background

As the grid structure and load characteristics become more complex, many sensitive electrical loads connected to the power system are highly susceptible to short-term disturbances from the power system, such as voltage sag and voltage surge, thereby placing increasingly stringent requirements on power quality and operational reliability. Therefore, in order to protect sensitive important industrial loads and improve the power quality of the power system, a protective device high-voltage circuit breaker is required to have a very high-speed closing and opening characteristic, namely, a very short closing and opening time.

At present, the internal quick circuit breaker who uses electromagnetism repulsion principle mostly adopts dish spring bistable structure, and the huge energy storage of dish spring needs to be overcome earlier in the divide-shut brake, consequently needs very high direct current voltage, produces huge repulsion, causes the volume increase, and repulsion dish fracture leads to serious combined floodgate bounce and contact damage more easily, influences the life of circuit breaker.

Patent No. CN208507565U discloses a high-voltage bistable lateral-moving type high-speed vacuum circuit breaker, which has the advantages of moderate switching-on speed, stability, no rebound, high switching-off speed, no bounce, automatic switching-off mechanism for switching-on failure, small mass of moving parts, large output of repulsion discs, compact structure, low cost, etc.; however, the circuit breaker also has certain defects, such as that the circuit breaker is not optimized and improved in the aspects of heat dissipation and reinforcement aiming at the embedded pole and the box body, a large amount of heat can be generated under a high-voltage environment, the embedded pole is damaged, and the service life is influenced.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

The present invention provides a high-voltage bistable lateral-moving type high-speed vacuum circuit breaker, which aims to overcome the technical problems in the prior art.

Therefore, the utility model adopts the following specific technical scheme:

a high-voltage bistable lateral-moving type high-speed vacuum circuit breaker comprises a circuit breaker main box body, wherein the top end of the circuit breaker main box body is provided with a plurality of pole column bases which are arranged at equal intervals, the top of each pole column base is provided with an insulating shell, and the front surface of the insulating shell is sequentially provided with a lower wire outlet end and an upper wire outlet end from bottom to top; a heat dissipation reinforcing sleeve is sleeved at the top of the insulating shell and positioned between the lower wire outlet end and the upper wire outlet end, and a vacuum arc extinguish chamber is arranged at the top in the insulating shell; the bottom is provided with moves the conducting rod in the vacuum interrupter, moves the conducting rod bottom and is provided with the screw rod, and the screw rod bottom is provided with insulating pull rod, and the cover is equipped with the buffering connecting piece outside the screw rod circumference.

Further, in order to stably install and fix the solid-sealed polar pole, the structural strength of the device is improved, installation side plates are arranged on the periphery of the polar pole base, and reinforcing ribs are arranged between the tops of the installation side plates and the side wall of the polar pole base.

Further, in order to realize the high-efficient heat dissipation of vacuum interrupter through the mode of liquid cooling, the cooling liquefaction through the cooling ring realizes that the heat transfer of heat accomplishes the heat dissipation after volatilizing the coolant liquid, the inside liquid cooling chamber that is the annular distribution of a plurality of equidistance arrangements of seting up of heat dissipation reinforcement cover, liquid cooling chamber top all is provided with the intercommunication chamber with the bottom, the cooling ring has been alternate at heat dissipation reinforcement cover top, the cross-section of cooling ring is that I-shaped structure and bottom are located the intercommunication intracavity portion, the heat dissipation reinforcement cover circumference outside is provided with the fin that a plurality of equidistance were arranged.

Further, in order to realize the stable connection between the movable conducting rod and the insulating pull rod, and the elastic structure help insulating pull rod through buffering connecting piece itself carries out the buffering shock attenuation of certain degree, stability and security are improved, buffering connecting piece establishes the go-between in the screw rod circumference outside including the cover, the go-between circumference outside is provided with a plurality of elastic connection boards, the elastic connection board other end is provided with the elasticity stabilizer blade, through bolt fixed connection between elasticity stabilizer blade and the insulating casing, the elastic connection board is L shape structure, the elasticity stabilizer blade is C shape structure.

The utility model has the beneficial effects that:

1. through the insulating casing who is provided with heat dissipation reinforcement cover, can improve the heat dispersion and the structural strength who seals utmost point post admittedly greatly, utilize the coolant liquid in the liquid cooling intracavity to guarantee the radiating effect of casing to improve the life who seals utmost point post admittedly.

2. Through setting up the buffering connecting piece, can stabilize the joint support and cushion the shock attenuation effectively to insulating pull rod in the circuit breaker and move conducting rod isotructure, prevent that voltage is too high to cause high strength to strike internal structure to further improve device's life.

3. By adopting the mechanical driving mechanism and the electromagnetic repulsion mechanism, the circuit breaker has the advantages of extremely high movement speed, moderate switching-on speed, stability, no rebound, high switching-off speed, no bounce, automatic switching-off mechanism for switching-on failure, small mass of moving parts, large output of a repulsion plate, compact structure, low cost and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a high-voltage bistable lateral-acting high-speed vacuum circuit breaker according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a sealed pole in a high-voltage bistable lateral-moving type high-speed vacuum circuit breaker according to an embodiment of the utility model;

fig. 3 is a side sectional view of a sealed pole in a high-voltage bistable lateral-moving type high-speed vacuum circuit breaker according to an embodiment of the utility model;

fig. 4 is a top cross-sectional view of a sealed pole in a high-voltage bistable lateral-moving type high-speed vacuum circuit breaker according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a buffering link in a high-voltage bistable lateral-moving type high-speed vacuum circuit breaker according to an embodiment of the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 3 at A;

fig. 7 is a partially enlarged view of fig. 3 at B.

In the figure:

1. a main box body of the circuit breaker; 2. a pole base; 3. an insulating housing; 4. a lower outlet end; 5. an upper outlet end; 6. a heat dissipation reinforcing sleeve; 7. a vacuum arc-extinguishing chamber; 8. a movable conductive rod; 9. a screw; 10. an insulating pull rod; 11. a buffer connection member; 1101. a connecting ring; 1102. an elastic connecting plate; 1103. an elastic leg; 12. installing a side plate; 13. reinforcing ribs; 14. a liquid-cooled chamber; 15. a communicating cavity; 16. a cooling ring; 17. and a heat sink.

Detailed Description

For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the utility model, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.

According to an embodiment of the present invention, there is provided a high voltage bistable side-acting high speed vacuum circuit breaker.

Referring to the drawings and the detailed description, as shown in fig. 1-7, the high-voltage bistable lateral-moving type high-speed vacuum circuit breaker according to the embodiment of the utility model includes a main tank body 1 of the circuit breaker, wherein the top end of the main tank body 1 of the circuit breaker is provided with a plurality of pole bases 2 arranged at equal intervals, the top of each pole base 2 is provided with an insulating shell 3, and the front surface of each insulating shell 3 is provided with a lower outlet terminal 4 and an upper outlet terminal 5 in sequence from bottom to top; a heat dissipation reinforcing sleeve 6 is sleeved on the top of the insulating shell 3 and positioned between the lower wire outlet end 4 and the upper wire outlet end 5, and a vacuum arc extinguish chamber 7 is arranged on the top in the insulating shell 3; the bottom is provided with movable conducting rod 8 in

vacuum interrupter

7, and 8 bottoms of movable conducting rod are provided with

screw rod

9, and 9 bottoms of screw rod are provided with insulating pull rod 10, and the circumference outside cover of screw rod 9 is equipped with buffering connecting piece 11.

By means of the technical scheme, the insulating shell 3 provided with the heat dissipation reinforcing sleeve 6 can greatly improve the heat dissipation performance and the structural strength of the solid-sealed polar pole, and the heat dissipation effect of the shell is guaranteed by the aid of cooling liquid in the liquid cooling cavity, so that the service life of the solid-sealed polar pole is prolonged. Through setting up buffering connecting piece 11, can carry out stable connection support and cushion the shock attenuation effectively to insulating pull rod 10 in the circuit breaker and move conducting rod 8 isotructures, prevent that voltage is too high to cause high strength to strike internal structure to further improve device's life. By adopting the mechanical driving mechanism and the electromagnetic repulsion mechanism, the circuit breaker has the advantages of extremely high movement speed, moderate switching-on speed, stability, no rebound, high switching-off speed, no bounce, automatic switching-off mechanism for switching-on failure, small mass of moving parts, large output of a repulsion plate, compact structure, low cost and the like.

In one embodiment, for the above-mentioned utmost point post base 2, utmost point post base 2 all is provided with installation curb plate 12 all around, is provided with strengthening rib 13 between installation curb plate 12 top and the utmost point post base 2 lateral wall to can stabilize the installation fixedly to the solid utmost point post that seals, improve the structural strength of device.

In an embodiment, for above-mentioned heat dissipation reinforced cover 6, the inside liquid cooling chamber 14 that is the annular distribution of a plurality of equidistance range of offering of heat dissipation reinforced cover 6, liquid cooling chamber 14 top and bottom all are provided with intercommunication chamber 15, cooling ring 16 has been alternate at heat dissipation reinforced cover 6 top, cooling ring 16's cross-section is that I-shaped structure and bottom are located inside intercommunication chamber 15, heat dissipation reinforced cover 6 circumference outside is provided with the fin 17 of a plurality of equidistance ranges, thereby can realize the high-efficient heat dissipation of vacuum interrupter 7 through the mode of liquid cooling, the cooling liquefaction through cooling ring 16 realizes the quick transmission of heat and accomplishes the heat dissipation after volatilizing the coolant liquid.

In an embodiment, for the buffering connection member 11, the buffering connection member 11 includes a connection ring 1101 sleeved outside the circumference of the screw 9, a plurality of elastic connection plates 1102 are disposed outside the circumference of the connection ring 1101, an elastic support foot 1103 is disposed at the other end of the elastic connection plate 1102, the elastic support foot 1103 is fixedly connected to the insulating housing 3 through a bolt, the elastic connection plate 1102 is an L-shaped structure, and the elastic support foot 1103 is a C-shaped structure, so that a stable connection between the movable conductive rod 8 and the insulating pull rod 10 can be realized, and the elastic structure of the buffering connection member 11 itself helps the insulating pull rod 10 to perform a certain degree of buffering and damping, thereby improving stability and safety.

For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.

In practical application, the breaker is installed and fixed, and the specific functions of the high-voltage bistable side-moving type high-speed vacuum breaker are realized by utilizing the mechanical driving mechanism and the electromagnetic repulsion mechanism which are arranged in the breaker and the combination of the electromagnetic repulsion mechanism and the bistable permanent magnet retaining mechanism. In the action process of the solid-sealed polar pole, the cooling liquid in the heat dissipation reinforcing sleeve 6 outside the vacuum arc extinguish chamber 7 can absorb heat and conduct heat by conduction of internal heat, and the conversion of vaporization and liquefaction is completed by cooling of the cooling ring 16, so that efficient heat dissipation is realized. The buffer connecting piece 11 is fixed at the bottom in the insulating shell 3, connects and fixes the insulating pull rod 10, and completes the buffer shock absorption through the elasticity of the buffer connecting piece.

In summary, according to the technical scheme of the present invention, the insulating housing 3 provided with the heat dissipation reinforcing sleeve 6 can greatly improve the heat dissipation performance and the structural strength of the solid-sealed polar pole, and the cooling liquid in the liquid cooling cavity is used to ensure the heat dissipation effect of the housing, so as to improve the service life of the solid-sealed polar pole. Through setting up buffering connecting piece 11, can carry out stable connection support and cushion the shock attenuation effectively to insulating pull rod 10 in the circuit breaker and move conducting rod 8 isotructures, prevent that voltage is too high to cause high strength to strike internal structure to further improve device's life. By adopting the mechanical driving mechanism and the electromagnetic repulsion mechanism, the circuit breaker has the advantages of extremely high movement speed, moderate switching-on speed, stability, no rebound, high switching-off speed, no bounce, automatic switching-off mechanism for switching-on failure, small mass of moving parts, large output of a repulsion plate, compact structure, low cost and the like.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate agent, and may be used for communicating the inside of two elements or interacting relation of two elements, unless otherwise specifically defined, and the specific meaning of the terms in the present invention can be understood by those skilled in the art according to specific situations.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a high-pressure bistable lateral motion type high-speed vacuum circuit breaker, includes circuit breaker main tank body (1), its characterized in that:

the top end of the main box body (1) of the circuit breaker is provided with a plurality of pole bases (2) which are arranged at equal intervals, the top of each pole base (2) is provided with an insulating shell (3), and the front surface of each insulating shell (3) is provided with a lower outlet end (4) and an upper outlet end (5) from bottom to top in sequence;

a heat dissipation reinforcing sleeve (6) is sleeved at the top of the insulating shell (3) and between the lower wire outlet end (4) and the upper wire outlet end (5), and a vacuum arc extinguish chamber (7) is arranged at the inner top of the insulating shell (3);

the bottom is provided with in vacuum interrupter (7) moves conducting rod (8), it is provided with screw rod (9) to move conducting rod (8) bottom, screw rod (9) bottom is provided with insulating pull rod (10), screw rod (9) circumference outside cover is equipped with buffering connecting piece (11).

2. The high-voltage bistable side-acting high-speed vacuum circuit breaker according to claim 1, wherein the pole base (2) is provided with mounting side plates (12) all around, and reinforcing ribs (13) are arranged between the tops of the mounting side plates (12) and the side walls of the pole base (2).

3. The high-voltage bistable side-acting high-speed vacuum circuit breaker according to claim 1, wherein the heat dissipation reinforcing sleeve (6) has a plurality of liquid cooling chambers (14) disposed therein in an equidistant manner and distributed annularly, and the top end and the bottom end of the liquid cooling chambers (14) are provided with communicating chambers (15).

4. The high-voltage bistable side-acting high-speed vacuum circuit breaker according to claim 3, wherein a cooling ring (16) is inserted into the top of the heat dissipation reinforcing sleeve (6), the cross section of the cooling ring (16) is I-shaped, and the bottom of the cooling ring is located inside the communicating cavity (15).

5. A high-voltage bistable side-acting high-speed vacuum circuit breaker as claimed in claim 3, wherein a plurality of heat sinks (17) are arranged equidistantly on the outer circumference of said heat sink reinforcing sleeve (6).

6. The high-voltage bistable lateral-moving type high-speed vacuum circuit breaker according to claim 1, wherein the buffer connecting piece (11) comprises a connecting ring (1101) sleeved outside the circumference of the screw (9), a plurality of elastic connecting plates (1102) are arranged outside the circumference of the connecting ring (1101), the other ends of the elastic connecting plates (1102) are provided with elastic legs (1103), and the elastic legs (1103) are fixedly connected with the insulating shell (3) through bolts.

7. A high-voltage bistable side-acting high-speed vacuum circuit breaker according to claim 6, wherein said resilient connecting plate (1102) is of L-shaped configuration and said resilient legs (1103) are of C-shaped configuration.