Permanent magnetic mechanism for circuit breaker

Abstract

The utility model relates to the technical field of permanent magnetic mechanisms, and discloses a permanent magnetic mechanism for a circuit breaker, which comprises a circuit breaker shell, the outer wall of the circuit breaker shell is fixedly connected with a connecting sheet, the outer wall of the connecting sheet is provided with a mounting hole, and the top of the circuit breaker shell is fixedly provided with a vacuum bubble. The outer wall of the vacuum bubble is fixedly sleeved with a porcelain sleeve, the bottom of the vacuum bubble is fixedly connected with a pole, and the outer wall of the pole is connected with a threaded sleeve. After permanent magnet equipment on the device works in an inner cavity of a loading cavity for a long time, in order to ensure that magnets and other parts in a permanent magnet mechanism can stably work under the normal temperature condition, the fans in the inner walls of the heat dissipation openings in the corresponding positions are used for pumping air, so that the temperature in the device is reduced through the fans on the device, and the service life of the device is prolonged. And performance reduction or damage caused by over-high temperature is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to permanent magnet mechanism technical field, concretely is a kind of permanent magnet mechanism for circuit breaker. BACKGROUND

[0002] Permanent magnet mechanism adopts a brand-new intelligent phase selection vacuum switch structure.This structure has only one main moving part when working, does not need mechanical unlocking and locking catch device, has less fault sources, higher reliability, and long service life, generally reaches more than 100,000 times, simultaneously controls the phase of opening and closing, realizes synchronous control, thereby reducing the impact of overvoltage and inrush current on system, reducing the investment of system protection, improving the overall life of system.

[0003] The existing permanent magnet mechanism for circuit breaker can refer to the Chinese utility model patent with authorized announcement number CN212392177U, which discloses a permanent magnet mechanism circuit breaker, "comprising: a shell, a vacuum bubble, a permanent magnet mechanism and a manual opening and closing mechanism, wherein: the shell is horizontally arranged, and a partition plate is horizontally welded in the middle part; the vacuum bubble is arranged at intervals on the upper surface of the shell, and a linkage plate is connected to the pole rod of the vacuum bubble at both ends; the permanent magnet mechanism is fixed on the partition plate and connected with the linkage plate; the manual opening and closing mechanism comprises a transmission shaft, a connecting bolt and a driving plate, and the manual opening and closing mechanism is transmissionally connected with the permanent magnet mechanism".

[0004] The above-mentioned device drives the first drive shaft and the second drive shaft of the permanent magnet mechanism to move up and down when in use, thereby realizing closing and opening; the whole process can be completed without the participation of standby power supply, improving the reliability and safety of the permanent magnet mechanism circuit breaker, but the permanent magnet mechanism in the existing device should operate within a certain temperature range, and the environmental temperature is usually required to be not more than 40℃, so it is necessary to dissipate the temperature in the device to ensure stable work under normal temperature conditions, and when the permanent magnet mechanism works in a relatively dry environment, the equipment should be kept well ventilated and dry to improve the operation stability and service life of the equipment, so a permanent magnet mechanism for circuit breaker solving the above problems is needed. SUMMARY

[0005] In view of the deficiencies of the prior art, the utility model provides a permanent magnet mechanism for circuit breaker, which has the advantages of ventilation, drying and heat dissipation, and solves the problems raised in the above background art.

[0006] The utility model provides following technical scheme: A kind of permanent magnet mechanism for circuit breaker, including circuit breaker shell, the outer wall of the circuit breaker shell is fixedly connected with connecting piece, the outer wall of the connecting piece is equipped with mounting hole, the top of the circuit breaker shell is fixedly installed with vacuum bubble, the outer wall of the vacuum bubble is fixedly sleeved with porcelain bushing, the bottom of the vacuum bubble is fixedly connected with pole, the outer wall of the pole is connected with threaded sleeve, the outer wall of the threaded sleeve is sleeved with linkage plate, the bottom of the pole is connected with permanent magnet device, the inner chamber of the circuit breaker shell is equipped with loading cavity, the inner wall of the circuit breaker shell is connected with air passage, the inner chamber of the air passage is placed with moisture-proof net, the inner wall of the circuit breaker shell is equipped with heat dissipation opening, the inner chamber of the heat dissipation opening is connected with fan.

[0007] As a preferred technical scheme of the utility model, the number of mounting holes is four, and the four mounting holes are symmetrically arranged in pairs.

[0008] As a preferred technical scheme of the utility model, the number of porcelain bushings is several, and the several porcelain bushings are sleeved on the outer wall of the vacuum bubble.

[0009] As a preferred technical scheme of the utility model, the permanent magnet device is arranged in the inner chamber of the loading cavity, and the permanent magnet device performs opening and closing current in the inner chamber of the loading cavity.

[0010] As a preferred technical scheme of the utility model, the number of air passages is two, and the two air passages are symmetrically arranged on the two sides of the circuit breaker shell.

[0011] As a preferred technical scheme of the utility model, the position of the heat dissipation opening corresponds to the position of the permanent magnet device, and the fan sucks air in the inner chamber of the loading cavity.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1、The permanent magnet mechanism for circuit breaker, by the mutual cooperation of permanent magnet device, heat dissipation opening and fan on the device, the permanent magnet device on the device performs long-time work in the inner chamber of the loading cavity, in order to ensure that the magnet and other components in the permanent magnet mechanism can work stably under normal temperature conditions, the fan in the inner wall of the heat dissipation opening in the corresponding position is used to suck air, so that the fan on the device reduces the temperature in the device, and performance degradation or damage caused by high temperature is avoided.

[0014] 2、The permanent magnet mechanism for circuit breaker, by the mutual cooperation of air passage and moisture-proof net on the device, the moisture-proof net on the device has excellent waterproof performance, so as to play a key role in the inner chamber of the air passage on the device, provide necessary waterproof and moisture-proof function, and the symmetrical design of the air passage is used for ventilation work, so that when the air passage is ventilated, humid water vapor enters the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the three-dimensional cross-sectional structure of the utility model;

[0017] Figure 3 For this utility model Figure 2 A schematic diagram of the structure at center A;

[0018] Figure 4 This is a schematic diagram of the pole structure of the utility model.

[0019] In the figure: 1. Circuit breaker housing; 2. Connecting plate; 3. Mounting hole; 4. Vacuum bulb; 5. Porcelain sleeve; 6. Pole; 7. Threaded sleeve; 8. Linkage plate; 9. Permanent magnet device; 10. Loading chamber; 11. Ventilation duct; 12. Moisture-proof net; 13. Heat dissipation vent; 14. Fan. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figures 1-4 A permanent magnet mechanism for a circuit breaker includes a circuit breaker housing 1, a connecting piece 2 is fixedly connected to the outer wall of the circuit breaker housing 1, a mounting hole 3 is opened on the outer wall of the connecting piece 2, a vacuum bubble 4 is fixedly installed on the top of the circuit breaker housing 1, a porcelain sleeve 5 is fixedly sleeved on the outer wall of the vacuum bubble 4, a pole 6 is fixedly connected to the bottom of the vacuum bubble 4, a threaded sleeve 7 is connected to the outer wall of the pole 6, a linkage plate 8 is sleeved on the outer wall of the threaded sleeve 7, a permanent magnet device 9 is connected to the bottom of the pole 6, and a loading chamber 10 is provided in the inner cavity of the circuit breaker housing 1. The inner wall of the circuit breaker housing 1 is connected to a ventilation duct 11, and a moisture-proof net 12 is placed in the inner cavity of the ventilation duct 11. The inner wall of the circuit breaker housing 1 is provided with a heat dissipation port 13, and the inner cavity of the heat dissipation port 13 is connected to a fan 14. The moisture-proof net 12 on the device is made of yarn for waterproof cloth, so that the moisture-proof net 12 on the device has excellent waterproof performance, thereby playing a key role in the inner cavity of the ventilation duct 11 on the device, providing the necessary waterproof and moisture-proof functions, and preventing humid water vapor from entering the device while ventilation is being carried out in the ventilation duct 11.

[0022] In a preferred implementation, the number of mounting holes 3 is four, and the four mounting holes 3 are symmetrically arranged in pairs. Through the four mounting holes 3 on the device, the circuit breaker housing 1 on the device is extended by the connecting plates 2 on both sides, and is fixed and installed by the four mounting holes 3 cooperating with mounting nails, so that the device can be installed and fixed from the bottom position on both sides.

[0023] In a preferred implementation, the number of porcelain sleeves 5 is several, and the several porcelain sleeves 5 are sleeved on the outer wall of the vacuum bulb 4. Through the several porcelain sleeves 5 on the device, the porcelain sleeves 5 on the device are sleeved on the outer wall of the vacuum bulb 4 to perform electrical insulation, prevent direct contact of current with objects, and thus protect equipment and personnel safety.

[0024] In a preferred implementation, the permanent magnet device 9 is arranged in the inner cavity of the loading cavity 10, and the permanent magnet device 9 controls the opening and closing current in the inner cavity of the loading cavity 10. Through the arrangement of the permanent magnet device 9 in the inner cavity of the loading cavity 10 on the device, the heat emitted by the permanent magnet device 9 on the device when controlling the opening and closing current will appear in the inner cavity of the loading cavity 10, and the loading cavity 10 is used to avoid excessive contact of the permanent magnet device 9 with the outside world.

[0025] In a preferred implementation, the number of ventilation channels 11 is two, and the two ventilation channels 11 are symmetrically arranged on both sides of the circuit breaker housing 1. Through the two ventilation channels 11 on the device, the circuit breaker housing 1 on the device uses the ventilation channels 11 on both sides to perform ventilation work when ventilation is needed, so that the symmetrically arranged ventilation channels 11 can ensure that the air path does not detour, and the ventilation effect is more smooth.

[0026] In a preferred implementation, the position of the heat dissipation port 13 corresponds to the position of the permanent magnet device 9, and the fan 14 draws air in the inner cavity of the loading cavity 10. Through the position of the heat dissipation port 13 corresponding to the position of the permanent magnet device 9 on the device, the heat emitted by the permanent magnet device 9 on the device when working is drawn by the fan 14 at the center of the heat dissipation port 13, so that the hot air in the inner cavity of the device is drawn outward by the fan 14.

[0027] Working principle, first through the device on the permanent magnet device 9, the heat dissipation port 13 and the fan 14 of mutual cooperation use, make the device on the permanent magnet device 9 in the inner cavity of loading cavity 10 long time work, in order to ensure that the magnet and other components in the permanent magnet mechanism can work stably under normal temperature conditions, use the fan 14 in the inner wall of the corresponding position of the heat dissipation port 13 to draw air, so that the fan 14 on the device reduces the temperature in the device, avoid the performance decline or damage caused by high temperature, again through the device on the air duct 11, the mutual cooperation use of moisture-proof net 12, make the device on the moisture-proof net 12 has excellent waterproof performance, thus playing a key role in the inner cavity of the device on the air duct 11, provide the necessary waterproof and moisture-proof function, and use the symmetrical design of air duct 11 to ventilate, so as to avoid the humid water vapor into the device while ventilating in the air duct 11.

[0028] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A permanent magnet mechanism for a circuit breaker, comprising a circuit breaker housing (1), characterized in that: The outer wall of the circuit breaker housing (1) is fixedly connected to a connecting piece (2), and the outer wall of the connecting piece (2) is provided with a mounting hole (3). The top of the circuit breaker housing (1) is fixedly installed with a vacuum bubble (4), and the outer wall of the vacuum bubble (4) is fixedly sleeved with a porcelain sleeve (5). The bottom of the vacuum bubble (4) is fixedly connected to a pole (6), and the outer wall of the pole (6) is connected to a threaded sleeve (7), and the outer wall of the threaded sleeve (7) is sleeved with a linkage plate (8). The bottom of the pole (6) is connected to a permanent magnet device (9). The inner cavity of the circuit breaker housing (1) is provided with a loading cavity (10), and the inner wall of the circuit breaker housing (1) is connected to a ventilation duct (11). The inner cavity of the ventilation duct (11) is provided with a moisture-proof net (12). The inner wall of the circuit breaker housing (1) is provided with a heat dissipation port (13), and the inner cavity of the heat dissipation port (13) is connected to a fan (14).

2. The permanent magnet mechanism for a circuit breaker according to claim 1, characterized in that: The number of the mounting holes (3) is four, and the four mounting holes (3) are symmetrically arranged in pairs.

3. The permanent magnet mechanism for a circuit breaker according to claim 1, characterized in that: There are a plurality of porcelain sleeves (5), and the plurality of porcelain sleeves (5) are sleeved on the outer wall of the vacuum bubble (4).

4. The permanent magnet mechanism for a circuit breaker according to claim 1, characterized in that: The permanent magnet device (9) is arranged in the inner cavity of the loading cavity (10), and the permanent magnet device (9) performs switching current in the inner cavity of the loading cavity (10).

5. The permanent magnet mechanism for a circuit breaker according to claim 1, characterized in that: The number of the ventilation ducts (11) is two, and the two ventilation ducts (11) are symmetrically arranged on both sides of the circuit breaker housing (1).

6. The permanent magnet mechanism for a circuit breaker according to claim 1, characterized in that: The position of the heat dissipation port (13) corresponds to the position of the permanent magnet device (9), and the fan (14) draws air from the inner cavity of the loading cavity (10).

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