CN211404389U

CN211404389U - Circuit breaker vacuum interrupter that thermal diffusivity is better

Info

Publication number: CN211404389U
Application number: CN202020056054.0U
Authority: CN
Inventors: 郑兵; 张天培
Original assignee: Huaguang Electronics Co ltd
Current assignee: Huaguang Electronics Co ltd
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-09-01
Anticipated expiration: 2030-01-10

Abstract

The utility model discloses a breaker vacuum arc extinguish chamber with better heat dissipation, which comprises a vacuum arc extinguish chamber and a cooling device, wherein the cooling device is respectively arranged at two sides of the vacuum arc extinguish chamber, heat conducting mechanisms are arranged on the outer walls of two sides of a shell of the vacuum arc extinguish chamber, the cooling device is arranged on the outer wall of the shell outside the heat conducting mechanisms, the high temperature inside the vacuum arc extinguish chamber is guided out by utilizing a heat conducting ring, a heat conducting rod, a heat radiating plate and a heat radiating fin, the heat conducting mechanisms are air-cooled by utilizing a fan, a ventilating pipe, a flow equalizing plate and an air outlet pipe of the cooling device, hot air is cooled by a snakelike cooling water pipe and then is guided into the area where the heat conducting mechanisms are positioned again, the heat dissipation effect of the vacuum arc extinguish chamber is further improved, a temperature sensor is arranged on the inner wall at one side, the PLC controller controls the start and stop of the fan through the information feedback of the temperature sensor, and unnecessary energy waste is avoided.

Description

Circuit breaker vacuum interrupter that thermal diffusivity is better

Technical Field

The utility model relates to an electrical equipment technical field specifically is a better circuit breaker vacuum interrupter of thermal diffusivity.

Background

The vacuum arc extinguish chamber is also called a vacuum switch tube, is a core component of a medium-high voltage power switch, has the main functions of rapidly extinguishing arc and inhibiting current after a medium-high voltage circuit is cut off a power supply through excellent insulating property of vacuum in the tube, is mainly applied to a power transmission and distribution control system of electric power, is also applied to power distribution systems such as metallurgy, mines, petroleum, chemical engineering, railways, broadcasting, communication, industrial high-frequency heating and the like, has the characteristics of energy conservation, material conservation, fire prevention, explosion prevention, small size, long service life, low maintenance cost, reliable operation, no pollution and the like, is more and more widely applied and more frequently used, can generate larger heat when the vacuum arc extinguish chamber is used, and can damage internal components and cannot be continuously used if the vacuum arc extinguish.

However, the existing vacuum arc-extinguishing chamber generally lacks a heat dissipation mechanism, or the heat dissipation performance is poor, so that the internal heat cannot be discharged in time. Therefore, the vacuum arc extinguish chamber of the circuit breaker with good heat dissipation performance is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a better circuit breaker vacuum interrupter of thermal diffusivity through set up heat conduction mechanism on vacuum interrupter's casing both sides outer wall to set up cooling device on the outside casing outer wall of heat conduction mechanism, thereby solved the problem that proposes in the above-mentioned background.

In order to achieve the above object, the utility model provides a following technical scheme: a breaker vacuum arc extinguish chamber with better heat dissipation performance comprises a vacuum arc extinguish chamber and a cooling device, wherein the cooling device is respectively arranged at two sides of the vacuum arc extinguish chamber, the vacuum arc extinguish chamber comprises a shell, an end cover, a guide shaft sleeve, a movable conducting rod, a movable contact, a static conducting rod, a static contact and a heat conduction mechanism, the end cover is respectively and fixedly connected on the outer wall of a port at the upper end and the lower end of the shell, the guide shaft sleeve is respectively arranged at the middle part of the end cover, the movable conducting rod is sleeved in the guide shaft sleeve at the upper end of the shell, one end of the movable conducting rod extends into the shell, the bottom of the tail end is fixedly connected with the movable contact, the static conducting rod is sleeved in the guide shaft sleeve at the bottom of the shell, one end of the static conducting rod extends into the shell, the outer walls at, a cooling device is arranged outside the heat conduction mechanism;

the cooling device comprises a protective box, a partition plate, a fan, a ventilation pipe, a flow equalizing plate, an air outlet pipe and a water cooling pipe, wherein the protective box is fixedly connected to the outer wall of the shell outside the heat conducting mechanism respectively, a partition plate is arranged on the inner walls of the upper end and the lower end of the protective box, the partition plate separates the protective box into a first cavity close to the outer wall of the shell and a second cavity far away from the outer wall of the shell, the fan is arranged on the inner wall of the protective box in the second cavity, an air outlet port of the fan is fixedly connected with one end of the ventilation pipe, the other end of the ventilation pipe penetrates through the partition plate and extends into the first cavity, the flow equalizing plate is fixedly connected with the tail end, the air outlet pipe is uniformly arranged on the side wall of the non-connecting end of the flow equalizing plate, the flow equalizing.

Furthermore, the inner walls of the upper end and the lower end of the guide shaft sleeve on one side of the movable conducting rod are respectively and fixedly connected with clamping blocks, the outer wall of the movable conducting rod between the clamping blocks is sleeved with a clamping ring, and the clamping ring is in interference fit with the inner wall of the guide shaft sleeve.

Furthermore, two sides of the top end of the static contact are respectively provided with a buffer reed.

Further, a temperature sensor is arranged on the inner wall of one side of the shell.

Further, heat conduction mechanism includes heat conduction ring, heat conduction pole, heating panel and fin, and the heat conduction ring is inlayed in the mounting groove on the casing outer wall, and the outer wall of heat conduction ring and the one end of heat conduction pole, the other end of heat conduction pole extend to the outside of casing, and terminal fixed connection heating panel, the setting of casing outer wall is hugged closely to the heating panel, evenly is provided with the fin on the outer wall of heating panel, and the fin is corresponding with the play tuber pipe.

Furthermore, the water cooling pipe comprises a shell and a snakelike cooling water pipe, wherein two ends of the snakelike cooling water pipe respectively penetrate through the inner wall of one side of the shell and are respectively fixedly connected with a water inlet pipe connector and a water outlet pipe connector on the outer wall of the shell.

Furthermore, be provided with the PLC controller on the outer wall of protective housing one side, all be the electricity between PLC controller and fan and be connected.

Furthermore, the temperature sensor is connected with the PLC through a built-in wireless connection module.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model provides a better circuit breaker vacuum interrupter of thermal diffusivity, set up heat conduction mechanism on vacuum interrupter's casing both sides outer wall, and set up cooling device on the outside casing outer wall of heat conduction mechanism, utilize the heat conduction ring, the heat conduction pole, heating panel and fin guide out the inside high temperature of vacuum interrupter, utilize cooling device's fan, the ventilation pipe, the board and the play tuber pipe that flow equalizes carries out the forced air cooling to heat conduction mechanism, and lead-in again to heat conduction mechanism place region after cooling down hot-blast through the inside snakelike condenser tube of water-cooling pipe, further improve the radiating effect to vacuum interrupter.

2. The utility model provides a better circuit breaker vacuum interrupter of thermal diffusivity sets up temperature sensor on the inner wall of vacuum interrupter's casing one side, and temperature sensor is connected with the PLC controller of installing on the protective housing outer wall through built-in wireless connection module, the information feedback that the PLC controller passes through temperature sensor, opening of control fan stops, in time open the fan and dispel the heat when vacuum interrupter temperature is too high, the normal back switching fan of vacuum interrupter temperature avoids the unnecessary energy extravagant.

3. The utility model provides a better circuit breaker vacuum interrupter of thermal diffusivity sets up the fixture block on cup jointing the port inner wall of the guide shaft sleeve that moves the conducting rod, and cup joint the snap ring on the outer wall of the conducting rod that moves between the snap ring, the snap ring drives and moves the closed and the disconnection task of the circuit of the within range internalization completion circuit of conducting rod between the snap ring, avoid seal ring to receive the direct impact of moving contact, guarantee vacuum interrupter's leakproofness good, and interference fit between the inner wall of snap ring and guide shaft sleeve, the leakproofness problem has further been prevented to vacuum interrupter from appearing.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural view of the vacuum arc-extinguishing chamber of the present invention;

FIG. 3 is a cross-sectional view of the guide shaft sleeve at the position A of the vacuum arc-extinguishing chamber of the utility model;

FIG. 4 is a schematic structural view of a cooling device according to the present invention;

fig. 5 is a sectional view of the water cooling pipe of the present invention;

fig. 6 is a schematic structural view of the heat conducting mechanism of the present invention.

In the figure: 1. a vacuum arc-extinguishing chamber; 11. a housing; 12. an end cap; 13. a guide shaft sleeve; 131. a clamping block; 132. a snap ring; 14. a movable conductive rod; 15. a moving contact; 16. a static conductive rod; 17. static contact; 18. a heat conducting mechanism; 181. a heat conducting ring; 182. a heat conducting rod; 183. a heat dissipation plate; 184. a heat sink; 19. a buffer reed; 110. a temperature sensor; 2. a cooling device; 21. a protective box; 22. a partition plate; 23. a fan; 24. a vent pipe; 25. a flow equalizing plate; 26. an air outlet pipe; 27. a water cooling pipe; 271. a housing; 272. a serpentine cooling water pipe; 28. a PLC controller.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a circuit breaker vacuum interrupter with good heat dissipation performance includes a vacuum interrupter 1 and a cooling device 2, the cooling device 2 is respectively installed at two sides of the vacuum interrupter 1, the vacuum interrupter 1 includes a housing 11, an end cap 12, a guide shaft sleeve 13, a movable conducting rod 14, a movable contact 15, a static conducting rod 16, a static contact 17 and a heat conducting mechanism 18, the end caps 12 are respectively and fixedly connected to outer walls of ports at upper and lower ends of the housing 11, the guide shaft sleeve 13 is respectively disposed at a middle portion of the end caps 12, the movable conducting rod 14 is sleeved in the guide shaft sleeve 13 at an upper end of the housing 11, one end of the movable conducting rod 14 extends into the housing 11, a bottom of the end of the movable conducting rod 14 is fixedly connected to the movable contact 15, the static conducting rod 16 is sleeved in the guide shaft sleeve 13 at a bottom end of the housing 11, one end of the static conducting rod 16 extends into the housing 11, outer walls at two sides of the static conducting rod 16 The heat conducting mechanisms 18 are respectively fixedly connected to the outer walls of the two sides of the housing 11, and the cooling device 2 is arranged outside the heat conducting mechanisms 18.

The inner walls of the upper and lower ends of the guide shaft sleeve 13 on one side of the movable conductive rod 14 are respectively and fixedly connected with a fixture block 131, the outer wall of the movable conductive rod 14 between the fixture blocks 131 is sleeved with a clamp ring 132, the clamp ring 132 is in interference fit with the inner wall of the guide shaft sleeve 13, two sides of the top end of the static contact 17 are respectively provided with a buffer reed 19, and the inner wall on one side of the shell 11 is provided with a temperature sensor 110.

Referring to fig. 4-5, a circuit breaker vacuum arc-extinguishing chamber with good heat dissipation performance, the cooling device 2 includes a protection box 21, a partition plate 22, a fan 23, a ventilation pipe 24, a flow-equalizing plate 25, an air-out pipe 26 and a water cooling pipe 27, the protection box 21 is respectively fixedly connected to the outer wall of the housing 11 outside the heat-conducting mechanism 18, the partition plate 22 is disposed on the inner wall of the upper and lower ends of the protection box 21, the protection box 21 is divided into a first chamber close to the outer wall of the housing 11 and a second chamber far away from the outer wall of the housing 11 by the partition plate 22, the fan 23 is disposed on the inner wall of the protection box 21 in the second chamber, the air-out port of the fan 23 is fixedly connected to one end of the ventilation pipe 24, the other end of the ventilation pipe 24 penetrates through the partition plate 22 and extends into the first chamber, and the end is fixedly connected to the flow-equalizing plate 25, the air-, the water cooling pipe 27 is fixedly connected to the outer walls of the adjacent vent ports at the upper end and the lower end of the first chamber respectively, the water cooling pipe 27 comprises a shell 271 and a serpentine cooling water pipe 272, the two ends of the serpentine cooling water pipe 272 penetrate through the inner wall of one side of the shell 271 respectively, and are fixedly connected with a water inlet pipe joint and a water outlet pipe joint on the outer wall of the shell 271 respectively.

Be provided with PLC controller 28 on the outer wall of protective housing 21 one side, all be the electricity between PLC controller 28 and fan 23 and be connected, temperature sensor 110 is connected with PLC controller 28 through built-in wireless connection module.

Referring to fig. 6, a circuit breaker vacuum interrupter with good heat dissipation performance, the heat conducting mechanism 18 includes a heat conducting ring 181, a heat conducting rod 182, a heat dissipating plate 183 and a heat dissipating fin 184, the heat conducting ring 181 is embedded in an installation groove on the outer wall of the housing 11, the outer wall of the heat conducting ring 181 and one end of the heat conducting rod 182, the other end of the heat conducting rod 182 extends to the outside of the housing 11, the tail end of the heat dissipating plate 183 is fixedly connected to the heat conducting ring, the heat dissipating plate 183 is tightly attached to the outer wall of the housing 11, the heat dissipating fin 184 is uniformly arranged on the outer wall of the.

In summary, the following steps: the utility model provides a better circuit breaker vacuum interrupter of thermal diffusivity sets up heat conduction mechanism 18 on the casing 11 both sides outer wall of vacuum interrupter 1, and set up cooling device 2 on the casing 11 outer wall outside heat conduction mechanism 18, utilize heat conduction ring 181, heat conduction pole 182, heating panel 183 and fin 184 to lead out the high temperature of vacuum interrupter 1 inside, utilize fan 23, ventilation pipe 24, flow equalizing plate 25 and air-out pipe 26 of cooling device 2 to carry out the forced air cooling to heat conduction mechanism 18, and lead into the region in heat conduction mechanism 18 again after cooling hot-blast through snakelike condenser tube 272 inside water cooling pipe 27, further improve the radiating effect to vacuum interrupter 1; the inner wall of one side of the shell 11 of the vacuum arc-extinguishing chamber 1 is provided with the temperature sensor 110, the temperature sensor 110 is connected with the PLC 28 arranged on the outer wall of the protective box 21 through a built-in wireless connection module, the PLC 28 controls the starting and stopping of the fan 23 through information feedback of the temperature sensor 110, the fan 23 is started to dissipate heat in time when the temperature of the vacuum arc-extinguishing chamber 1 is too high, and the fan 23 is switched on and off after the temperature of the vacuum arc-extinguishing chamber 1 is normal, so that unnecessary energy waste is avoided; set up fixture block 131 on the port inner wall of the guide shaft sleeve 13 that cup joints movable conducting rod 14 to and cup joint snap ring 132 on the outer wall of movable conducting rod 14 between fixture block 131, snap ring 132 drives movable conducting rod 14 and accomplishes the closed and the disconnection task of circuit in the within range activity between fixture block 131, avoid seal ring to receive the direct impact of moving contact 15, guarantee that vacuum interrupter 1's leakproofness is good, and interference fit between snap ring 132 and the inner wall of guide shaft sleeve 13, the leakproofness problem has further been prevented to vacuum interrupter 1. This better circuit breaker vacuum interrupter of thermal diffusivity, heat dispersion is good, and is energy-conserving high-efficient, convenient and practical.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a better circuit breaker vacuum interrupter of thermal diffusivity, includes vacuum interrupter (1) and cooling device (2), and the both sides at vacuum interrupter (1) are installed respectively in cooling device (2), its characterized in that: the vacuum arc extinguish chamber (1) comprises a shell (11), an end cover (12), a guide shaft sleeve (13), a movable conducting rod (14), a movable contact (15), a static conducting rod (16), a static contact (17) and a heat conducting mechanism (18), wherein the end cover (12) is fixedly connected on the outer wall of the port at the upper end and the lower end of the shell (11), the guide shaft sleeve (13) is arranged at the middle part of the end cover (12), the movable conducting rod (14) is sleeved in the guide shaft sleeve (13) at the upper end of the shell (11), one end of the movable conducting rod (14) extends to the inside of the shell (11), the bottom of the tail end is fixedly connected with the movable contact (15), the static conducting rod (16) is sleeved in the guide shaft sleeve (13) at the bottom end of the shell (11), one end of the static conducting rod (16) extends to the inside of the shell (11), the outer walls at two sides of the static conducting rod (16) are fixedly connected with the inner walls, the heat conducting mechanisms (18) are respectively fixedly connected to the outer walls of the two sides of the shell (11), and the cooling device (2) is arranged outside the heat conducting mechanisms (18);

the cooling device (2) comprises a protective box (21), a partition plate (22), a fan (23), a ventilation pipe (24), a flow equalizing plate (25), an air outlet pipe (26) and a water cooling pipe (27), wherein the protective box (21) is respectively and fixedly connected to the outer wall of the shell (11) outside the heat conducting mechanism (18), the partition plate (22) is arranged on the inner wall of the upper end and the lower end of the protective box (21), the protective box (21) is divided into a first cavity close to the outer wall of the shell (11) and a second cavity far away from the outer wall of the shell (11) by the partition plate (22), the fan (23) is arranged on the inner wall of the protective box (21) in the second cavity, the air outlet port of the fan (23) is fixedly connected with one end of the ventilation pipe (24), the other end of the ventilation pipe (24) penetrates through the partition plate (22) and extends into the first cavity, the tail end of the ventilation pipe is fixedly connected with the flow equalizing plate, the flow equalizing plate (25) and the air outlet pipe (26) are arranged opposite to the heat conducting mechanism (18), and the water cooling pipes (27) are respectively and fixedly connected to the outer walls of the ports of the ventilation openings adjacent to the upper end and the lower end of the first cavity.

2. The vacuum arc-extinguishing chamber of the circuit breaker with better heat dissipation performance as recited in claim 1, characterized in that: clamping blocks (131) are fixedly connected to the inner walls of the upper end and the lower end of a guide shaft sleeve (13) on one side of the movable conductive rod (14) respectively, a clamping ring (132) is sleeved on the outer wall of the movable conductive rod (14) between the clamping blocks (131), and the clamping ring (132) is in interference fit with the inner wall of the guide shaft sleeve (13).

3. The vacuum arc-extinguishing chamber of the circuit breaker with better heat dissipation performance as recited in claim 1, characterized in that: and two sides of the top end of the static contact (17) are respectively provided with a buffer reed (19).

4. The vacuum arc-extinguishing chamber of the circuit breaker with better heat dissipation performance as recited in claim 1, characterized in that: and a temperature sensor (110) is arranged on the inner wall of one side of the shell (11).

5. The vacuum arc-extinguishing chamber of the circuit breaker with better heat dissipation performance as recited in claim 1, characterized in that: heat conduction mechanism (18) are including heat conduction ring (181), heat conduction pole (182), heating panel (183) and fin (184), heat conduction ring (181) are inlayed in the mounting groove on casing (11) outer wall, the outer wall of heat conduction ring (181) and the one end of heat conduction pole (182), the other end of heat conduction pole (182) extends to the outside of casing (11), and terminal fixed connection heating panel (183), casing (11) outer wall setting is hugged closely in heating panel (183), evenly be provided with fin (184) on the outer wall of heating panel (183), fin (184) are corresponding with air-out pipe (26).

6. The vacuum arc-extinguishing chamber of the circuit breaker with better heat dissipation performance as recited in claim 1, characterized in that: the water cooling pipe (27) comprises a shell (271) and a serpentine cooling water pipe (272), wherein two ends of the serpentine cooling water pipe (272) penetrate through the inner wall of one side of the shell (271) respectively and are fixedly connected with a water inlet pipe joint and a water outlet pipe joint on the outer wall of the shell (271) respectively.

7. The vacuum arc-extinguishing chamber of the circuit breaker with better heat dissipation performance as recited in claim 1, characterized in that: the outer wall of one side of the protective box (21) is provided with a PLC (28), and the PLC (28) and the fan (23) are electrically connected.

8. The vacuum arc-extinguishing chamber of the circuit breaker with better heat dissipation performance as recited in claim 4, characterized in that: the temperature sensor (110) is connected with the PLC (28) through a built-in wireless connection module.