High-voltage vacuum circuit breaker

Abstract

The utility model relates to the technical field of vacuum circuit breakers, and discloses a high-voltage vacuum circuit breaker which comprises a base, a high-voltage vacuum circuit breaker body and a rainproof device. According to the high-voltage vacuum circuit breaker, the high-voltage vacuum circuit breaker body can be normally used outdoors through the arranged rainproof device, the influence of rainwater on the high-voltage vacuum circuit breaker body is reduced, meanwhile, through dynamic ventilation and rainproof protection, the heat dissipation and rainproof problems of the high-voltage vacuum circuit breaker body when the high-voltage vacuum circuit breaker body is used outdoors are solved, and the service life of the high-voltage vacuum circuit breaker body is prolonged. When it rains, a rainwater sensor makes contact with rainwater and controls a double-shaft motor to stop working at the same time, in this way, two cooling fans stop rotating, two baffles block the outsides of two first rainproof frames respectively, rainwater cannot enter the rainproof shell from the two sides, and due to the fact that the outdoor temperature is low when it rains, the rainwater cannot enter the rainproof shell from the two sides; the heat dissipation capacity of a second breathable net plate on the top of the rainproof shell can meet the requirement for heat dissipation in rainy days, and the rainwater sensor can control the double-shaft motor to work when it does not rain.

Description

Technical Field

[0001] This application relates to the field of vacuum circuit breaker technology, specifically high-voltage vacuum circuit breakers. Background Technology

[0002] Vacuum circuit breakers are named for their high vacuum nature, which is the medium used for arc extinguishing and the insulating medium in the contact gap after arc extinguishing. They have advantages such as small size, light weight, suitability for frequent operation, and no need for maintenance during arc extinguishing. They are widely used in power distribution networks. Vacuum circuit breakers are indoor power distribution devices in 3-10kV, 50Hz three-phase AC systems. They can be used in industrial and mining enterprises, power plants, and substations for the protection and control of electrical equipment. They are particularly suitable for applications requiring oil-free operation, minimal maintenance, and frequent operation. Circuit breakers can be installed in medium-voltage switchgear, double-layer switchgear, and fixed switchgear for the control and protection of high-voltage electrical equipment.

[0003] A prior patent (publication number: CN220543801U) has been published. A high-voltage vacuum circuit breaker includes a base, a pad at the bottom of the base's inner cavity, a fixing block at the top of the pad, and slots on both sides of the fixing block. The top of the fixing block extends to the top of the base and is fixedly connected to the vacuum circuit breaker body. A housing is fixedly connected to the top of both sides of the base's inner cavity. An electric cylinder is fixedly connected to the outer side of the housing's inner cavity, a moving plate is fixedly connected to the inner side of the electric cylinder, and a moving column is fixedly connected to the inner side of the moving plate. The inner side of the moving column extends to the inner side of the housing and is fixedly connected to a locking block. This utility model provides a high-voltage vacuum circuit breaker. First, the base is installed in a designated position using an assembly block. When the vacuum circuit breaker body needs to be disassembled, the electric cylinder drives the moving plate to move outward, and the moving plate drives a pulley to slide within a limiting groove.

[0004] When the devices in the aforementioned comparative documents are used outdoors, they are directly exposed to the environment and are affected by rain. If no protective measures are taken, it may lead to problems such as decreased insulation performance, corrosion of mechanical parts, and short circuits of electrical components. In order to solve the above problems, a high-voltage vacuum circuit breaker is proposed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a high-voltage vacuum circuit breaker that effectively solves the heat dissipation and rain protection problems of high-voltage vacuum circuit breakers when used outdoors by combining dynamic ventilation and rain protection.

[0006] To achieve the above objectives, this application provides the following technical solution: a high-voltage vacuum circuit breaker, comprising a base, a high-voltage vacuum circuit breaker body, and a rainproof device. The rainproof device includes a rainproof outer shell welded to the upper surface of the base. Side ventilation openings are provided on both sides of the rainproof outer shell. A cooling fan is rotatably connected to the inner wall of each side ventilation opening. A first breathable mesh plate is installed on the outside of each side ventilation opening. A first rainproof frame is fixedly connected to the outer surface of each first breathable mesh plate. Two first rainproof frames are respectively fixedly connected to the outer surface of the rainproof outer shell. On both sides, a baffle is hinged to the inner wall of each of the first rainproof frames. A dual-axis motor is fixedly connected to the inner top wall of the rainproof shell. Sprockets are fixedly connected to the two output shafts of the dual-axis motor and the rotating shafts of the two cooling fans. Two chains are provided inside the rainproof shell. The four sprockets are connected by two chains respectively. A second breathable mesh plate is embedded in the top of the rainproof shell. A rainproof eave is fixedly connected to the upper surface of the rainproof shell. A rain sensor is fixedly connected to the top of the rainproof eave. The rain sensor is electrically connected to the dual-axis motor.

[0007] The above solution allows the high-voltage vacuum circuit breaker to be used normally outdoors by installing a rainproof device, reducing the impact of rainwater on the circuit breaker. Simultaneously, dynamic ventilation and rainproof protection solve the heat dissipation and rainproofing problems of the high-voltage vacuum circuit breaker when used outdoors. When it rains, the rain sensor comes into contact with the rainwater and controls the dual-axis motor to stop working. This stops the two cooling fans from rotating, and the two baffles block the outside of the two first rainproof frames, preventing rainwater from entering the rainproof housing from the sides. Since the outdoor temperature is low when it rains, the heat dissipation capacity of the second ventilated mesh plate on the top of the rainproof housing is sufficient to meet the heat dissipation needs in rainy weather. When it is not raining, the rain sensor controls the dual-axis motor to work, causing the two cooling fans to blow air outwards, which can lift the two baffles. Thus, the two first rainproof frames and the second ventilated mesh plate work simultaneously to achieve efficient heat dissipation.

[0008] Furthermore, a ventilation hood is fixedly connected to the top of the rainproof shell, the second breathable mesh plate is located inside the ventilation hood, and the ventilation hood is located below the rainproof eaves.

[0009] The above solution reduces the likelihood of rainwater entering the rainproof shell through the second breathable mesh panel by using a ventilation hood, thus optimizing the rainproof effect of the device.

[0010] Furthermore, the inner top wall of the rainproof shell is fixedly connected to an air duct, the shape of which is adapted to the shape of the second breathable mesh plate.

[0011] The above scheme allows external air to be transported into the interior of the rainproof shell along a predetermined path through the set air ducts.

[0012] Furthermore, a dehumidifying plate is fixedly connected to the bottom end of the air duct.

[0013] The above solution allows for the removal of moisture from the gas entering the rainproof casing by using a dehumidifying plate, thereby preventing the high-voltage vacuum circuit breaker from operating in a humid environment.

[0014] Furthermore, the back of the rainproof housing is provided with evenly distributed cable trays, which are adapted to the high-voltage vacuum circuit breaker body. A second rainproof frame is fixedly connected to the back of the rainproof housing, and the second rainproof frame is located above the cable trays.

[0015] The above solution facilitates the connection of the high-voltage vacuum circuit breaker body to external equipment through the cable routing port. The second rainproof frame reduces the chance of rainwater entering the rainproof housing through the cable routing port, thus reducing the likelihood of the high-voltage vacuum circuit breaker body being affected by rainwater.

[0016] Furthermore, a protective door is installed on the front of the rainproof shell, and a handle is fixedly connected to the outer surface of the protective door.

[0017] The above solution provides protection for the components inside the rainproof shell by setting up a protective door, reducing the chance of rainwater entering the interior of the rainproof shell from the front.

[0018] Furthermore, heat dissipation fins are fixedly connected to the back of the rainproof shell.

[0019] The above solution utilizes heat dissipation fins to assist in heat dissipation, accelerating the efficiency of heat transfer on the surface of the rainproof casing and thus improving the heat dissipation rate.

[0020] Furthermore, a connecting base is installed at each of the four corners of the high-voltage vacuum circuit breaker body. The high-voltage vacuum circuit breaker body is positioned on the upper surface of the base through the four connecting bases, and a positioning base is fixedly connected at each of the four corners of the base.

[0021] The above solution allows the high-voltage vacuum circuit breaker body to be easily disassembled and assembled by setting the connection base, facilitating regular maintenance of the high-voltage vacuum circuit breaker body. The positioning base can also be used to position the base in a suitable location for outdoor use.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] This high-voltage vacuum circuit breaker, with its rainproof device, allows for normal outdoor use, reducing the impact of rainwater on the circuit breaker body. Simultaneously, through dynamic ventilation and rainproof protection, it solves the heat dissipation and rain protection issues of the circuit breaker body during outdoor use. When it rains, the rain sensor comes into contact with the rainwater and simultaneously controls the dual-axis motor to stop working. This stops the rotation of the two cooling fans, and the two baffles block the outside of the two first rainproof frames, preventing rainwater from entering the rainproof housing from the sides. Since the outdoor temperature is low during rain, the heat dissipation capacity of the second ventilated mesh plate on the top of the rainproof housing is sufficient to meet the heat dissipation needs in rainy weather. When it is not raining, the rain sensor controls the dual-axis motor to work, causing the two cooling fans to blow air outwards, which can lift the two baffles. Thus, the two first rainproof frames and the second ventilated mesh plate work simultaneously, achieving efficient heat dissipation. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall front view of the structure of this application;

[0025] Figure 2 This is a schematic diagram of the overall rear view structure of this application;

[0026] Figure 3 This is a partial first bottom view of the structure of this application;

[0027] Figure 4 This is a partial second bottom view schematic diagram of the structure of this application;

[0028] Figure 5 This is a partial top view of the structure of this application.

[0029] In the picture:

[0030] 1. Base; 2. High-voltage vacuum circuit breaker body; 3. Rainproof device; 301. Rainproof housing; 302. Side ventilation opening; 303. Cooling fan; 304. First breathable mesh plate; 305. First rainproof frame; 306. Baffle; 307. Dual-axis motor; 308. Sprocket; 309. Chain; 310. Second breathable mesh plate; 311. Rainproof eaves; 312. Rain sensor; 313. Ventilation cover; 314. Air duct; 315. Moisture desiccant plate; 316. Cable tray; 317. Second rainproof frame; 318. Protective door; 319. Heat dissipation fins; 4. Connecting base; 5. Positioning base. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] Please see Figure 1 , Figure 4 and Figure 5 The high-voltage vacuum circuit breaker in this embodiment includes a base 1, a high-voltage vacuum circuit breaker body 2, and a rainproof device 3. Connecting bases 4 are installed at each of the four corners of the high-voltage vacuum circuit breaker body 2. The high-voltage vacuum circuit breaker body 2 is positioned on the upper surface of the base 1 via the four connecting bases 4. Positioning bases 5 are fixedly connected to each of the four corners of the base 1. The connecting bases 4 allow for easy assembly and disassembly of the high-voltage vacuum circuit breaker body 2, facilitating regular maintenance. The positioning bases 5 allow the base 1 to be positioned in a suitable location for outdoor use.

[0033] Please see Figure 1 , Figure 2 and Figure 3 The rainproof device 3 includes a rainproof outer shell 301 welded to the upper surface of the base 1. Side ventilation openings 302 are provided on both sides of the rainproof outer shell 301. A cooling fan 303 is rotatably connected to the inner wall of each side ventilation opening 302. A first breathable mesh plate 304 is installed on the outside of each side ventilation opening 302. The first breathable mesh plate 304 reduces the probability of dust entering the interior of the rainproof outer shell 301, thus providing a certain dustproof effect. A first rainproof frame 305 is fixedly connected to the outer surface of each first breathable mesh plate 304. The first rainproof frame 305 reduces the amount of rainwater passing through the first breathable mesh plate 304. To reduce the chance of rainwater entering the interior of the rainproof housing 301, two first rainproof frames 305 are fixedly connected to both sides of the outer surface of the rainproof housing 301. Each first rainproof frame 305 has a baffle 306 hinged to its inner wall. When the cooling fan 303 rotates, it can blow up the baffle 306, thereby making the first breathable mesh plate 304 transparent and accelerating the rate of air exchange between the inside and outside of the rainproof housing 301. When the cooling fan 303 is not rotating, the baffle 306 will block the outside of the first breathable mesh plate 304, so that rainwater will not enter the interior of the rainproof housing 301 through the first breathable mesh plate 304, thus improving the rainproof effect of the device.

[0034] Please see Figure 2 , Figure 3 and Figure 4A dual-axis motor 307 is fixedly connected to the inner top wall of the rainproof housing 301. Sprockets 308 are fixedly connected to the two output shafts of the dual-axis motor 307 and the rotating shafts of the two cooling fans 303. Two chains 309 are installed inside the rainproof housing 301. The four sprockets 308 are respectively connected by the two chains 309. When the dual-axis motor 307 starts, it drives the sprockets 308 fixed to its two rotating shafts to rotate. The two chains 309 then rotate the two cooling fans 303. The top is inlaid with a second breathable mesh plate 310. A rainproof eave 311 is fixedly connected to the upper surface of the rainproof shell 301. A rain sensor 312 is fixedly connected to the top of the rainproof eave 311. The rain sensor 312 is electrically connected to the dual-axis motor 307. The rain sensor 312 can sense the rain in the outdoor environment. When it rains, the rain sensor 312 will control the dual-axis motor 307 to stop working. When it stops raining, the rain sensor 312 will control the dual-axis motor 307 to start working again.

[0035] Please see Figure 2 , Figure 3 and Figure 4 A ventilation hood 313 is fixedly connected to the top of the rainproof housing 301. A second breathable mesh plate 310 is located inside the ventilation hood 313, which is located below the rainproof eaves 311. The ventilation hood 313 reduces the probability of rainwater entering the rainproof housing 301 through the second breathable mesh plate 310, thus optimizing the rainproof effect of the device. An air duct 314 is fixedly connected to the inner top wall of the rainproof housing 301. The shape of the air duct 314 is adapted to the shape of the second breathable mesh plate 310. The air duct 314 allows external air to be transported to the interior of the rainproof housing 301 along a predetermined track. A dehumidifying plate 315 is fixedly connected to the bottom of the air duct 314. The dehumidifying plate 315 can dehumidify the gas entering the rainproof housing 301, thereby preventing the high-voltage vacuum circuit breaker body 2 from operating in a humid environment.

[0036] Please see Figure 2 , Figure 3 and Figure 4The back of the rainproof housing 301 has evenly distributed cable trays 316, which are adapted to the high-voltage vacuum circuit breaker body 2. A second rainproof frame 317 is fixedly connected to the back of the rainproof housing 301. The second rainproof frame 317 is located above the cable trays 316. The cable trays 316 facilitate wiring between the high-voltage vacuum circuit breaker body 2 and external equipment. The second rainproof frame 317 reduces the probability of rainwater entering the rainproof housing 301 through the cable trays 316, thus reducing the impact on the high-voltage vacuum circuit breaker body 2. To reduce the chance of rain damage, a protective door 318 is installed on the front of the rainproof housing 301. A handle is fixedly connected to the outer surface of the protective door 318. The protective door 318 can protect the internal components of the rainproof housing 301 and reduce the chance of rainwater entering the interior of the rainproof housing 301 from the front. A heat dissipation fin 319 is fixedly connected to the back of the rainproof housing 301. The heat dissipation fin 319 can assist in heat dissipation and accelerate the efficiency of heat transfer on the surface of the rainproof housing 301, thereby improving the heat dissipation rate.

[0037] In this embodiment, the high-voltage vacuum circuit breaker, through the rainproof device 3, allows the high-voltage vacuum circuit breaker body 2 to be used normally outdoors, reducing the impact of rainwater on the high-voltage vacuum circuit breaker body 2. Simultaneously, through dynamic ventilation and rainproof protection, the heat dissipation and rainproofing problems of the high-voltage vacuum circuit breaker body 2 during outdoor use are solved. When it rains, the rain sensor 312 will come into contact with the rainwater, simultaneously controlling the dual-axis motor 307 to stop working. This causes the two cooling fans 303 to stop rotating, and the two baffles 306 will respectively block the rainwater. The two first rainproof frames 305 are positioned on the outside, preventing rainwater from entering the interior of the rainproof housing 301 from the sides. Since the outdoor temperature is low when it rains, the heat dissipation capacity of the second breathable mesh plate 310 on the top of the rainproof housing 301 is sufficient to meet the heat dissipation needs in rainy weather. When it is not raining, the rain sensor 312 controls the dual-axis motor 307 to work, causing the two cooling fans 303 to blow air outwards, which can blow up the two baffles 306. In this way, the two first rainproof frames 305 and the second breathable mesh plate 310 will work simultaneously to achieve efficient heat dissipation.

[0038] The working principle of the above embodiment is as follows: When the device is used outdoors, the rain sensor 312 controls the operation of the dual-axis motor 307. When it is not raining, the rain sensor 312 will control the dual-axis motor 307 to start. When the dual-axis motor 307 starts, it will drive the two corresponding sprockets 308 to rotate. The two chains 309 can make the sprockets 308 at the shaft ends of the two cooling fans 303 rotate, thereby making the two cooling fans 303 rotate. The two cooling fans 303 will blow air to the outside, thereby blowing up the corresponding baffle 306 and carrying away the heat inside the rainproof shell 301. In this way, the device can pass through the two first breathable mesh plates 304 and the second breathable mesh plate 310. To achieve efficient heat dissipation, when it rains outdoors, the rain sensor 312 can contact the rainwater and control the dual-axis motor 307 to stop working. This will stop the two cooling fans 303 from rotating, and the two baffles 306 will block the outside of the two first breathable mesh panels 304, thereby reducing the chance of rainwater entering the rainproof housing 301 from the side. At the same time, the rainproof eaves 311 can block the rainproof housing 301 from the top, thereby reducing the chance of the high-voltage vacuum circuit breaker body 2 being affected by rainwater when used outdoors. Furthermore, since the outdoor temperature is low on rainy days, the second breathable mesh panel 310 can meet the heat dissipation requirements on rainy days. This solves the problems of heat dissipation and waterproofing during outdoor use, making it more practical.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0040] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-voltage vacuum circuit breaker, comprising a base (1), a high-voltage vacuum circuit breaker body (2), and a rainproof device (3), characterized in that: The rainproof device (3) includes a rainproof shell (301) welded to the upper surface of the base (1). Side ventilation openings (302) are provided on both sides of the rainproof shell (301). A cooling fan (303) is rotatably connected to the inner wall of each side ventilation opening (302). A first breathable mesh plate (304) is installed on the outside of each side ventilation opening (302). A first rainproof frame (305) is fixedly connected to the outer surface of each first breathable mesh plate (304). Two first rainproof frames (305) are respectively fixedly connected to both sides of the outer surface of the rainproof shell (301). A baffle (306) is hinged to the inner wall of each first rainproof frame (301). The rainproof shell (301)... 1) A dual-axis motor (307) is fixedly connected to the inner top wall. The two output shaft ends of the dual-axis motor (307) and the rotating shaft ends of the two cooling fans (303) are all fixedly connected to sprockets (308). The interior of the rainproof shell (301) is provided with two chains (309). The four sprockets (308) are respectively connected by the two chains (309). The top of the rainproof shell (301) is inlaid with a second breathable mesh plate (310). The upper surface of the rainproof shell (301) is fixedly connected to a rainproof eave (311). The top of the rainproof eave (311) is fixedly connected to a rain sensor (312). The rain sensor (312) is electrically connected to the dual-axis motor (307).

2. The high-voltage vacuum circuit breaker according to claim 1, characterized in that: The top of the rainproof shell (301) is fixedly connected to a ventilation hood (313), the second breathable mesh plate (310) is located inside the ventilation hood (313), and the ventilation hood (313) is located below the rainproof eaves (311).

3. The high-voltage vacuum circuit breaker according to claim 1, characterized in that: The inner top wall of the rainproof shell (301) is fixedly connected to an air duct (314), the shape of which is adapted to the shape of the second breathable mesh plate (310).

4. The high-voltage vacuum circuit breaker according to claim 3, characterized in that: A dehumidifying plate (315) is fixedly connected to the bottom end of the air duct (314).

5. The high-voltage vacuum circuit breaker according to claim 1, characterized in that: The back of the rainproof housing (301) is provided with evenly distributed cable trays (316), which are adapted to the high-voltage vacuum circuit breaker body (2). A second rainproof frame (317) is fixedly connected to the back of the rainproof housing (301), and the second rainproof frame (317) is located above the cable trays (316).

6. The high-voltage vacuum circuit breaker according to claim 1, characterized in that: The rainproof housing (301) has a protective door (318) installed on the front, and a handle is fixedly connected to the outer surface of the protective door (318).

7. The high-voltage vacuum circuit breaker according to claim 1, characterized in that: The back of the rainproof housing (301) is fixedly connected to a heat dissipation fin (319).

8. The high-voltage vacuum circuit breaker according to claim 1, characterized in that: The high-voltage vacuum circuit breaker body (2) is equipped with a connecting base (4) at each of its four corners. The high-voltage vacuum circuit breaker body (2) is positioned on the upper surface of the base (1) by the four connecting bases (4). The base (1) is fixedly connected with a positioning base (5) at each of its four corners.

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