CN110265257B

CN110265257B - Outdoor vacuum circuit breaker

Info

Publication number: CN110265257B
Application number: CN201910451174.2A
Authority: CN
Inventors: 郭俊桦
Original assignee: Luogao Electric Co ltd
Current assignee: LUOGAO ELECTRIC Co.,Ltd.
Priority date: 2019-05-28
Filing date: 2019-05-28
Publication date: 2021-01-19
Anticipated expiration: 2039-05-28
Also published as: CN110265257A

Abstract

The invention discloses an outdoor vacuum circuit breaker, which structurally comprises a fixed cross arm, an efficient circulating heat dissipation device, a shell, a wire inlet and outlet sleeve, a support frame, a vacuum arc-extinguishing chamber and a current transformer, and has the following effects: high-efficient circulation heat abstractor passes through the flat impeller kinetic energy of wind or rainwater and truns into mechanical energy to in fully leading-in water conservancy diversion conical cover with the air current, shunt air current or rainwater through water conservancy diversion conical cover, make air current or rainwater fully fill up every heat dissipation pipeline, because insulating heat conduction post and the inside metal heat pipe connection of body, can evenly transmit the heat that vacuum circuit breaker explosion chamber transmitted to come to the heat dissipation pipeline in, utilize flowing rainwater and air current efficient to take the heat out, can effectively reduce the temperature in main loop, thereby improve vacuum circuit breaker's rated current.

Description

Outdoor vacuum circuit breaker

Technical Field

The invention relates to the field of circuit breakers, in particular to an outdoor vacuum circuit breaker.

Background

With the continuous development of national economy, the power grid structure and load characteristics are increasingly complex, in order to protect equipment and personal safety, higher requirements are put forward on power supply safety and reliability, the most common circuit safety device is a vacuum circuit breaker which can be divided into an indoor vacuum circuit breaker and an outdoor vacuum circuit breaker according to indoor and outdoor, the outdoor vacuum circuit breaker is generally arranged on a telegraph pole and exposed outdoors for a long time and is in environments of high temperature, overcast and rainy and the like, so that the serious threat is formed on the structure and the operation safety of the outdoor vacuum circuit breaker, the vacuum circuit breaker cannot efficiently dissipate heat in hot summer, especially the heat dissipation of a conductive main loop, and in rainy seasons, rainwater is easily gathered on a top cover of a shell and slowly accumulated to permeate into the vacuum circuit breaker, so that the circuit breaker is short-circuited, and the normal work and the service life of the circuit breaker are influenced, therefore, a novel outdoor vacuum circuit breaker needs to be developed, so that the problem that the existing outdoor vacuum circuit breaker cannot efficiently dissipate heat in hot summer is solved, and in rainy seasons, rainwater easily permeates into the vacuum circuit breaker to cause the circuit breaker to be in a short circuit state.

Disclosure of Invention

Aiming at the defects of the prior art, the invention is realized by the following technical scheme: the utility model provides an outdoor vacuum circuit breaker, its structure includes fixed cross arm, high-efficient circulation heat abstractor, shell, business turn over line sleeve pipe, support frame, vacuum interrupter, current transformer, the shell both sides be equipped with business turn over line sleeve pipe and be the axisymmetric structure, the shell around both ends be equipped with vacuum interrupter, business turn over line sleeve pipe and vacuum interrupter be connected, the even equidistance in vacuum interrupter both sides be equipped with current transformer more than two, current transformer and vacuum interrupter cooperate, the shell be the rectangle structure and bottom parallel equidistance is equipped with two support frames, the shell top be equipped with high-efficient circulation heat abstractor, high-efficient circulation heat abstractor around both sides be equipped with fixed cross arm.

As the further optimization of the technical scheme, the efficient circulating heat dissipation device is composed of a flat plate impeller, a flow guiding conical cover, a base plate, a frame and a heat dissipation mechanism, the base plate is arranged at the top of the frame, the base plate and the base plate are in interference fit, the flow guiding conical cover is arranged at the center of the base plate, the flow guiding conical cover is embedded and installed on the base plate, the flat plate impeller is arranged at the center of the top of the flow guiding conical cover, the heat dissipation mechanism is arranged at the bottom of the frame, and the heat dissipation mechanism is matched with the flow guiding conical cover.

As the further optimization of this technical scheme, the kuppe taper cover constitute by kuppe, suction nozzle, overflow mouth, exhaust nozzle, lug, the kuppe outer wall on even equidistance be equipped with the suction nozzle more than two, the even equidistance of kuppe inner wall be equipped with the overflow mouth more than two, overflow mouth and kuppe be connected, the central point of kuppe bottom put and be equipped with the lug, the even equidistance in lug bottom be equipped with the exhaust nozzle more than two.

As the further optimization of this technical scheme, heat dissipation mechanism constitute by heat dissipation pipeline, support, insulating heat conduction circle, the central point of support inner circle put and be equipped with insulating heat conduction circle, support and insulating heat conduction circle between even equidistance be equipped with the heat dissipation pipeline more than two, heat dissipation pipeline and insulating heat conduction circle be connected.

As a further optimization of the technical scheme, the heat dissipation pipeline is composed of an atomizing nozzle, a pipe body, an interface and an insulating heat conduction column, the atomizing nozzle is arranged at the front end of the pipe body, the interface is arranged at the top of the pipe body, the pipe body is connected with the exhaust nozzle through the interface, the insulating heat conduction column is arranged at the rear end of the pipe body, and the insulating heat conduction column is connected with the pipe body.

As a further optimization of the technical scheme, the substrate is of a rectangular structure, the top of the substrate is provided with a circular groove, and the side edge of the substrate inclines from top to bottom.

As a further optimization of the technical scheme, through holes are uniformly distributed on the surface of the atomizing nozzle.

Advantageous effects

The outdoor vacuum circuit breaker is reasonable in design and strong in functionality, and has the following beneficial effects:

according to the efficient circulating heat dissipation device, the kinetic energy of wind or rainwater is converted into mechanical energy by the flat impeller, the airflow is fully guided into the flow guide conical cover, the airflow or rainwater is shunted through the flow guide conical cover, each heat dissipation pipeline is fully filled with the airflow or rainwater, the heat transferred from the arc extinguish chamber of the vacuum circuit breaker can be uniformly collected in the heat dissipation pipeline due to the fact that the insulating heat conduction columns are connected with the metal heat conduction pipes in the pipe body, the flowing rainwater and the airflow are used for rapidly and efficiently taking out the heat, the temperature of a main loop can be effectively reduced, and the rated current of the vacuum circuit breaker is improved, so that the problem that the existing outdoor vacuum circuit breaker cannot efficiently dissipate heat in hot summer, and rainwater easily permeates into the vacuum circuit breaker to cause short circuit of the vacuum circuit breaker in rainy seasons is solved;

the base plate, the air guide sleeve, the air discharge nozzles and the bumps form a main shunting structure, airflow or rainwater can be gathered on the air guide sleeve by utilizing the structural arrangement of the circular grooves at the top of the base plate, the rainwater is prevented from being unevenly distributed at the top of the vacuum circuit breaker, the air guide sleeve is of a hollow conical structure, so that the rainwater or the airflow flowing into the air guide sleeve can be gathered around the bumps and is shunted and discharged through the air discharge nozzles, and each air discharge nozzle is correspondingly connected with one heat dissipation pipeline, so that each heat dissipation pipeline can be fully filled with the shunted rainwater and airflow, and the heat in the pipe body can be quickly and efficiently taken out by utilizing the flowing rainwater and airflow;

the tube bodies, the insulating heat-conducting columns and the insulating heat-conducting rings form a main heat-radiating structure, each tube body is surrounded into a ring wall structure along the insulating heat-conducting rings, the tube bodies are connected with the insulating heat-conducting rings through the insulating heat-conducting columns, the insulating heat-conducting columns can transfer heat of an arc extinguish chamber of the vacuum circuit breaker to the insulating heat-conducting rings, the heat is uniformly transferred to the metal heat-conducting tubes in each tube body through the insulating heat-conducting rings, so that the heat covers the tube bodies, and when airflow or rainwater flows into the tube bodies, the heat can be quickly absorbed and discharged, so that the heat can be timely and effectively dissipated;

the atomizing nozzle, the pipe body and the interface form a main exhaust structure, and through holes are uniformly distributed on the surface of the atomizing nozzle, so that heat or rainwater concentrated in the pipe body can be discharged in a dispersing manner, hot air discharged by fluid is prevented from being accumulated around the vacuum circuit breaker to influence the heat dissipation effect of the vacuum circuit breaker, and meanwhile, the phenomenon that rainwater is discharged in a large amount in rainy days to influence the normal operation of power equipment below the vacuum circuit breaker is avoided.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic structural view of an outdoor vacuum circuit breaker according to the present invention;

FIG. 2 is a schematic cross-sectional view of the efficient circulating heat dissipation device of the present invention;

FIG. 3 is a schematic top view of the conical pod of the present invention;

FIG. 4 is a schematic top view of the heat dissipation mechanism of the present invention;

FIG. 5 is a schematic view of a heat dissipation pipe according to the present invention.

In the figure: the device comprises a fixed cross arm-1, an efficient circulating heat dissipation device-2, a flat impeller-21, a diversion conical cover-22, a diversion cover-22 a, an air inlet nozzle-22 b, an overflow port-22 c, an air exhaust nozzle-22 d, a bump-22 e, a base plate-23, a frame-24, a heat dissipation mechanism-25, a heat dissipation pipeline-25 a, an atomizing nozzle-25 a1, a pipe body-25 a2, a port-25 a3, an insulating heat conduction column-25 a4, a support-2 b, an insulating heat conduction ring-25 c, a shell-3, a wire inlet and outlet sleeve-4, a support frame-5, a vacuum arc extinguish chamber-6 and a current transformer-7.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easy to understand, the following description and the accompanying drawings further illustrate the preferred embodiments of the invention.

Examples

Referring to fig. 1-5, the present invention provides an embodiment of an outdoor vacuum circuit breaker;

please refer to fig. 1, an outdoor vacuum circuit breaker, its structure includes fixed cross arm 1, high-efficient circulation heat abstractor 2, shell 3, business turn over line sleeve pipe 4, support frame 5, vacuum interrupter 6,

current transformer

7, 3 both sides of shell be equipped with business turn over line sleeve pipe 4 and be the axisymmetric structure, shell 3 around both ends be equipped with vacuum interrupter 6, business turn over line sleeve pipe 4 and vacuum interrupter 6 be connected, the even equidistance in 6 both sides of vacuum interrupter be equipped with four current transformer 7, current transformer 7 and vacuum interrupter 6 cooperate, shell 3 be the rectangle structure and the parallel equidistance in bottom be equipped with two support frames 5, shell 3 top be equipped with high-efficient circulation heat abstractor 2, high-efficient circulation heat abstractor 2 around both sides be equipped with fixed cross arm 1.

Referring to fig. 2, the efficient circulating heat dissipation device 2 is composed of a flat plate impeller 21, a diversion conical cover 22, a base plate 23, a frame 24 and a heat dissipation mechanism 25, the frame 24 is of a rectangular structure, the length and the width of the frame 24 are larger than those of the shell 3, the frame can shield rainwater on the lower portion of the shell 3, the base plate 23 is arranged at the top of the frame 24 and is in interference fit with the base plate 23, the diversion conical cover 22 is arranged at the center of the base plate 23, the diversion conical cover 22 is embedded and installed on the base plate 23, the flat plate impeller 21 is arranged at the center of the top of the diversion conical cover 22, the flat plate impeller 21 is installed on the diversion conical cover 22 through bearing support rods on two sides, the heat dissipation mechanism 25 is arranged at the bottom of the frame 24, and the heat dissipation mechanism 25 is matched with the diversion conical.

Referring to fig. 3, the air guiding cone 22 is composed of an air guiding cover 22a, an air inlet nozzle 22b, an overflow port 22c, an air outlet nozzle 22d, and a protrusion 22e, the air guide sleeve 22a is a hollow conical structure and four air inlet nozzles 22b are uniformly arranged on the outer wall at equal intervals, the air inlet arranged at the top of the air inlet nozzle 22b adopts a concave structure, the air inlet nozzle 22b surrounds a circular wall structure along the air guide sleeve 22a, four overflow ports 22c are uniformly arranged on the inner wall of the air guide sleeve 22a at equal intervals, the overflow ports 22c are connected with the air guide sleeve 22a, a convex block 22e is arranged at the central position of the bottom of the air guide sleeve 22a, the convex block 22e is in a conical structure, the sharp end of the convex block is upward, lug 22e bottom even equidistance be equipped with eight nozzles 22d, each nozzle 22d enclose the annular wall structure along lug 22e bottom round thick annular body.

Referring to fig. 4, the heat dissipation mechanism 25 is composed of a heat dissipation pipe 25a, a support 2b, and an insulating heat conduction ring 25c, the support 2b is a circular structure, the insulating heat conduction ring 25c is disposed at the center of the inner ring, eight heat dissipation pipes 25a are uniformly disposed between the support 2b and the insulating heat conduction ring 25c at equal intervals, the heat dissipation pipes 25a are connected with the insulating heat conduction ring 25c, and each heat dissipation pipe 25a surrounds the support 2b along the insulating heat conduction ring 25c to form a circular wall structure.

Referring to fig. 5, the heat dissipation pipe 25a includes an atomizing nozzle 25a1, a pipe body 25a2, a connector 25a3, and an insulating heat conduction column 25a4, the atomizing nozzle 25a1 is disposed at the front end of the pipe body 25a2, the atomizing nozzle 25a1 is disposed on the outer ring of the bracket 2b, the connector 25a3 is disposed at the top of the pipe body 25a2, the pipe body 25a2 and the exhaust nozzle 22d are connected by the connector 25a3, a metal heat conduction pipe body is disposed inside the pipe body 25a2, an insulating layer is wrapped outside the pipe body 25a2, the insulating heat conduction column 25a4 is disposed at the rear end of the pipe body 25a2, the insulating heat conduction column 25a4 is connected with the metal heat conduction pipe inside the pipe body 25a2, and the connecting ends of the insulating heat conduction column 25a4 and the pipe body 25a 2.

Referring to fig. 2, the substrate 23 has a rectangular structure, the top of the substrate is provided with a circular groove, and the side of the substrate is inclined from top to bottom, so that rainwater is collected in the conical diversion cover 22 through the circular groove in rainy days, thereby preventing the rainwater from being unevenly distributed on the top of the vacuum circuit breaker.

Referring to fig. 5, through holes are uniformly distributed on the surface of the atomizing nozzle 25a1, and hot air or rainwater concentrated inside the tube 25a2 is discharged through the through holes, so that the discharged hot air is prevented from being collected around the vacuum circuit breaker to affect the heat dissipation effect of the vacuum circuit breaker, and meanwhile, the phenomenon that a large amount of rainwater is discharged in rainy days to affect the normal operation of power equipment below the vacuum circuit breaker is avoided.

The specific realization principle is as follows:

the invention relates to a high-efficiency circulating heat radiation device 2, a flat impeller 21 converts kinetic energy of wind or rainwater into mechanical energy, and fully introduces airflow into a diversion conical cover 22, the airflow or rainwater is diverted through the diversion conical cover 22, so that the airflow or rainwater fully fills a heat radiation pipeline 25a and is discharged from an atomizing nozzle 25a1, because a base plate 23, the diversion conical cover 22a, an exhaust nozzle 22d and a lug 22e form a main diversion structure, the top of the base plate 23 is provided with a circular groove, the side edge of the circular groove is inclined from top to bottom, rainwater can intensively flow into the circular groove in rainy days and continuously flow into the diversion cover 22a through the circular groove by utilizing the structural arrangement of the circular groove, the rainwater is prevented from being unevenly distributed at the top of a vacuum circuit breaker, because the diversion cover 22a is of a hollow conical structure, the rainwater or the airflow flowing into the diversion cover 22a can be collected around the lug 22e, the water is discharged in a shunting way through the exhaust nozzles 22d, and each exhaust nozzle 22d is correspondingly connected with one heat dissipation pipeline 25a, so that each heat dissipation pipeline 25a is fully filled with shunted rainwater and airflow, and heat is quickly and efficiently taken out by utilizing flowing rainwater and airflow; the insulating heat-conducting column 25a4 is connected with the metal heat-conducting pipe in the tube body 25a2, so that the heat transferred from the arc extinguish chamber of the vacuum circuit breaker can be uniformly collected in the heat-radiating pipeline 25a, the flowing rainwater and airflow can be used for rapidly and efficiently carrying out the heat, the temperature of a main loop can be effectively reduced, and the rated current of the vacuum circuit breaker can be improved, because the tube body 25a2, the insulating heat-conducting column 25a4 and the insulating heat-conducting ring 25c form a main heat-radiating structure, each tube body 25a2 forms a ring wall structure along the insulating heat-conducting ring 25c, the tube body 25a2 is connected with the insulating heat-conducting ring 25c through the insulating heat-conducting column 25a4, the insulating heat-conducting column 25a4 can transfer the heat of the arc extinguish chamber of the vacuum circuit breaker to the insulating heat-conducting ring 25c, the heat can be uniformly transferred to the metal heat-conducting pipe in each tube body 25a2 through the insulating heat-, when air flow or rainwater flows into the pipe body 25a2, heat can be quickly absorbed and discharged, so that heat can be timely and effectively dissipated, because the atomizing nozzle 25a1, the pipe body 25a2 and the interface 25a3 form a main exhaust structure, through holes are uniformly distributed on the surface of the atomizing nozzle 25a1, heat or rainwater concentrated in the pipe body 25a2 can be dispersed and discharged, hot air exhausted by fluid is prevented from being gathered around the vacuum circuit breaker to influence the heat dissipation effect of the vacuum circuit breaker, and meanwhile, rainwater is prevented from being greatly discharged in rainy days to influence the normal operation of power equipment below the vacuum circuit breaker; through above structure cooperation setting to this solves current outdoor vacuum circuit breaker in the unable high-efficient heat dissipation of hot summer, and in overcast and rainy season, inside the rainwater permeates vacuum circuit breaker very easily, makes the problem of circuit breaker short circuit.

While there have been shown and described what are at present considered the fundamental principles of the invention, the essential features and advantages thereof, it will be understood by those skilled in the art that the present invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but rather, is capable of numerous changes and modifications in various forms without departing from the spirit or essential characteristics thereof, and it is intended that the invention be limited not by the foregoing descriptions, but rather by the appended claims and their equivalents.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an outdoor vacuum circuit breaker, its structure includes fixed cross arm (1), high-efficient circulation heat abstractor (2), shell (3), business turn over line sleeve pipe (4), support frame (5), vacuum interrupter (6), current transformer (7), shell (3) both sides be equipped with business turn over line sleeve pipe (4), shell (3) around both ends be equipped with vacuum interrupter (6), vacuum interrupter (6) both sides be equipped with current transformer (7), shell (3) bottom be equipped with support frame (5), shell (3) top be equipped with high-efficient circulation heat abstractor (2), high-efficient circulation heat abstractor (2) around both sides be equipped with fixed cross arm (1), its characterized in that:

the efficient circulating heat dissipation device (2) is composed of a flat impeller (21), a flow guiding conical cover (22), a base plate (23), a frame (24) and a heat dissipation mechanism (25), wherein the base plate (23) is arranged at the top of the frame (24), the flow guiding conical cover (22) is arranged at the center of the base plate (23), the flat impeller (21) is arranged at the top of the flow guiding conical cover (22), and the heat dissipation mechanism (25) is arranged at the bottom of the frame (24);

the air guide conical cover (22) consists of an air guide cover (22a), an air inlet nozzle (22b), an overflow port (22c), an exhaust nozzle (22d) and a bump (22e), wherein the air inlet nozzle (22b) is arranged on the outer wall of the air guide cover (22a), the overflow port (22c) is arranged on the inner wall of the air guide cover (22a), the overflow port (22c) is connected with the air guide cover (22a), the bump (22e) is arranged at the bottom of the air guide cover (22a), and the exhaust nozzle (22d) is arranged at the bottom of the bump (22 e);

the heat dissipation mechanism (25) is composed of a heat dissipation pipeline (25a), a support (2b) and an insulating heat conduction ring (25c), the support (2b) is of a circular structure, the insulating heat conduction ring (25c) is arranged at the center of an inner ring, eight heat dissipation pipelines (25a) are uniformly arranged between the support (2b) and the insulating heat conduction ring (25c) at equal intervals, the heat dissipation pipelines (25a) are connected with the insulating heat conduction ring (25c), and each heat dissipation pipeline (25a) forms a circular wall structure on the support (2b) along the insulating heat conduction ring (25 c);

the heat dissipation pipeline (25a) constitute by atomizing mouth (25a1), body (25a2), interface (25a3), insulating heat conduction post (25a4), body (25a2) front end be equipped with atomizing mouth (25a1), atomizing mouth (25a1) place in on support (2b) outer lane, body (25a2) top be equipped with interface (25a3), body (25a2) and exhaust nozzle (22d) pass through interface (25a3) and connect, body (25a2) inside be equipped with metal heat conduction body, the outside parcel has the insulating layer, body (25a2) rear end be equipped with insulating heat conduction post (25a4), insulating heat conduction post (25a4) and body (25a2) inside metal heat pipe connection, insulating heat conduction post (25a4) and body (25a2) adopt interference fit connection end.