CN113556109A - Solid-state circuit breaker with self-adaptive current limiting capability and control method thereof - Google Patents

Abstract

The invention relates to the technical field of solid-state circuit breakers, in particular to a solid-state circuit breaker with self-adaptive current limiting capability and a control method thereof; when dispelling the heat to the main control board through radiator fan, air flow rate through wind department is strengthened, will adsorb on dustproof cloth through the dust that the vent flowed in, thereby avoid the dust gathering in the inside of shell, cause the interference to main control board and circuit breaking mechanism, simultaneously when radiator fan pivoted, the air current drives the impeller rotation that rotates, thereby it rotates to drive the dwang, because second bevel gear and first bevel gear meshing, thereby it rotates to drive the raise dust pole, and then drive the shake pole and hit the dirt cloth and hit, thereby make the last adsorbed dust of dustproof cloth drop, when making dustproof cloth carry out dirt-proofing, keep good ventilation effect throughout.

Description

Solid-state circuit breaker with self-adaptive current limiting capability and control method thereof

Technical Field

The invention relates to the technical field of solid-state circuit breakers, in particular to a solid-state circuit breaker with self-adaptive current limiting capability and a control method thereof.

Background

A solid-state circuit breaker is a device that conducts and breaks current by using a power electronic valve string. Because the power electronic device has the performance of conducting voltage drop, when the direct current breaker conducts current, the power electronic valve string has conduction loss, and a heat dissipation device needs to be configured to ensure the safe and reliable work of the power electronic valve string.

The conventional heat dissipation method of the solid-state circuit breaker is to ventilate the housing and cool the housing by using a fan, but the heat dissipation method can cause dust in the air and airflow to enter the housing together, and the internal structure of the solid-state circuit breaker causes interference.

Disclosure of Invention

The invention aims to provide a solid-state circuit breaker with self-adaptive current limiting capability and a control method thereof, and solves the problem that the traditional heat dissipation mode of the solid-state circuit breaker in the prior art can cause interference to the internal structure of the solid-state circuit breaker due to the fact that dust in air and airflow enter the interior of a shell together.

In order to achieve the above object, the present invention provides a solid-state circuit breaker with adaptive current-limiting capability, which includes a housing, a main control board, a circuit breaking mechanism, a detection mechanism, a cooling fan and a dust-proof mechanism, wherein the main control board, the circuit breaking mechanism, the cooling fan and the dust-proof mechanism are arranged inside the housing, an information output end of the detection mechanism is connected with an information input end of the main control board, an information input end of the circuit breaking mechanism is connected with an information output end of the main control board, a ventilation opening is arranged at the back of the housing, an input end of the cooling fan corresponds to the ventilation opening, and an output end of the cooling fan corresponds to the main control board;

the dustproof mechanism comprises dustproof cloth and a dust raising component, the dustproof cloth is detachably connected with the shell and is positioned in the shell, the dust raising component comprises a first support, a dust raising rod, a second support, a rotating rod and a rotating impeller, the first support and the second support are both detachably connected with the shell and are positioned in the shell, the first support is positioned at one end of the dustproof cloth, which is far away from the ventilation opening, the second support is positioned at one end of the first support, which is far away from the dustproof cloth, the axis of the first support is mutually vertical to the axis of the second support, the dust raising rod is movably arranged on the first support, the rotating rod is movably arranged on the second support, one end of the dust raising rod is provided with a shaking rod, the other end of the dust raising rod is provided with a first bevel gear, and one end of the rotating rod is provided with the impeller, the other end of the rotating rod is provided with a second bevel gear, the rotating impeller corresponds to the output end of the cooling fan, and the second bevel gear is meshed with the first bevel gear.

When passing through radiator fan is right when the main control board dispels the heat, the air velocity of passing through wind department is strengthened, will pass through the dust that the vent flowed in adsorbs on the dustproof cloth to avoid the dust gathering to the inside of shell, it is right the main control board with the shutdown mechanism causes the interference, simultaneously radiator fan pivoted in, the air current drives the rotary impeller rotates, thereby drives the dwang rotates, because second bevel gear with first bevel gear meshing, thereby drive the raise dust lever rotates, and then drives the shake pole is right dustproof cloth is beaten, thereby makes adsorbed dust drops on the dustproof cloth, makes dustproof cloth keeps good ventilation effect throughout when carrying out dustproof.

Wherein, the impeller that rotates includes fixed plate, four arcs, first mounting and second mounting, the fixed plate with dwang fixed connection, and be located the dwang is kept away from second bevel gear's one end, four the one end of arcs all runs through the dwang, and with the fixed plate is laminated mutually, and evenly distributed is in around the fixed plate, the cover is equipped with on the dwang first mounting, four run through after the other end of arcs all buckles the dwang, and with first mounting is laminated mutually, it is equipped with still to overlap on the dwang the second mounting, second mounting and four the one end after the arcs buckle is corresponding.

Will in proper order the mounting, four the one end of arc piece first mounting, four the other end of arc piece with the second mounting cover is established on the dwang, form the impeller rotates, thereby makes the impeller rotates and is windmill structure setting, makes the effect that the impeller accepts the air current rotates is better, dwang slew velocity is faster.

The number of the shaking rods is multiple, the shaking rods are evenly arranged on the dust raising rods, and every two adjacent shaking rods are arranged in a staggered structure.

Every adjacent two the shaking rod all is the setting of crisscross structure, makes through the shaking rod hits the frequency of dustproof cloth is faster, makes right dustproof cloth's dust removal effect is better.

The main control board comprises a power supply module, an MCU (micro control unit), a detection module, a communication module, an interaction module, an analog-to-digital conversion module and a control module, the detection mechanism comprises a leakage current sensor and a temperature sensor, the circuit breaking mechanism comprises a high-speed switch, a current sensor and an isolation node, two ends of the power supply module are respectively connected with a live wire and a zero line, the detection module, the interaction module, the analog-to-digital conversion module and the control module are all electrically connected with the MCU, the control module is electrically connected with the high-speed switch, the live wire is provided with the high-speed switch and the current sensor, the current sensor and the power supply are all electrically connected with the detection module, and the leakage current sensor and the temperature sensor are all electrically connected with the analog-to-digital detection module.

The detection module is used for detecting the current and voltage condition of a circuit in real time, detecting data are uploaded to the MCU central processing unit, the MCU central processing unit is used for integrating and processing the data and then uploading the data to the interaction module so as to display the current and voltage condition of the circuit in real time, when the leakage current sensor detects a circuit leakage current signal, when the temperature sensor detects that the temperature of the circuit rises abnormally, the analog-digital detection module converts the detected current signal and temperature signal into digital signals and transmits the digital signals to the MCU central processing unit, and when the MCU central processing unit receives the abnormal signals, the control module is used for controlling the high-speed switch to open the circuit rapidly so as to open the circuit and remind a worker of maintaining the circuit in time through the interaction module.

The detection module comprises a voltage detection module and a current detection module, the voltage detection module is electrically connected with the power supply module, the current detection module is electrically connected with the current sensor, the analog-to-digital conversion module comprises a leakage current detection conversion module and a temperature detection conversion module, the leakage current detection conversion module is electrically connected with the leakage current sensor, the temperature detection conversion module is electrically connected with the temperature sensor, the interaction module comprises a man-machine interface and an audible and visual alarm, and the man-machine interface and the audible and visual alarm are electrically connected with the MCU central processing unit.

The voltage detection module is used for detecting the voltage condition of the power supply module in real time, the current sensor is used for detecting the current condition on a live wire in real time, the current detection module is used for uploading detection data to the MCU central processing unit, the electric leakage detection conversion module is used for converting detected current signals into digital signals, the temperature detection conversion module is used for converting detected temperature signals into digital signals, the man-machine interface is used for displaying the current and voltage condition of a circuit in real time, and the acousto-optic alarm is used for timely reminding a worker of maintaining.

The invention also provides a control method of the solid-state circuit breaker with the self-adaptive current limiting capability, which comprises the following steps:

the voltage detection module is used for detecting the voltage condition of the power supply module in real time, the current sensor is used for detecting the current condition on the live wire in real time, and the current detection module is used for uploading detection data to the MCU central processing unit;

integrating and processing the data by using the MCU central processing unit, and uploading the data to the man-machine interface so as to display the current and voltage conditions of the line in real time;

when the leakage current sensor detects a line leakage current signal, transmitting the current signal to the leakage detection conversion module, converting the current signal into a digital signal by using the leakage detection conversion module, and transmitting the digital signal to the MCU central processing unit;

when the temperature sensor detects that the temperature of the line is abnormally increased, when the temperature signal is transmitted to the temperature detection conversion module, the temperature signal is converted into a digital signal by the temperature detection conversion module and then transmitted to the MCU central processing unit;

and after the MCU central processing unit receives the abnormal signal, the control module is utilized to control the high-speed switch to be rapidly opened, so that the circuit is opened, and the acousto-optic alarm is started to remind a worker to maintain in time.

The invention relates to a solid-state circuit breaker with self-adaptive current-limiting capability, wherein one end of a dust raising rod is provided with a shaking rod, the other end of the dust raising rod is provided with a first bevel gear, one end of a rotating rod is provided with a rotating impeller, the other end of the rotating rod is provided with a second bevel gear, the rotating impeller corresponds to the output end of a radiating fan, the second bevel gear is meshed with the first bevel gear, when a main control board is radiated by the radiating fan, the air flow velocity at the wind passing position is enhanced, dust flowing in through a vent is adsorbed on dustproof cloth, so that the dust is prevented from being accumulated in the shell and interfering the main control board and a circuit breaking mechanism, and meanwhile, when the radiating fan rotates, airflow drives the rotating impeller to rotate, so as to drive the rotating rod to rotate, because the second bevel gear is meshed with the first bevel gear, the dust raising rod is driven to rotate, and then the shaking rod is driven to strike the dustproof cloth, so that dust adsorbed on the dustproof cloth falls off, and the dustproof cloth keeps a good ventilation effect all the time while preventing dust.

Drawings

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

Fig. 1 is a schematic view of a partial structure of a housing provided by the present invention.

Fig. 2 is a schematic view of a part of the internal structure of the housing provided by the present invention.

Fig. 3 is an enlarged view of a portion of the structure of fig. 2 a according to the present invention.

Fig. 4 is a schematic view of a connection structure of a rotating rod and a rotating impeller provided by the present invention.

Fig. 5 is a schematic structural diagram of a shaking rod provided by the present invention.

Fig. 6 is a schematic diagram of a control method using the solid-state circuit breaker with adaptive current limiting capability according to the present invention.

Fig. 7 is a flowchart illustrating steps of a method for controlling a solid-state circuit breaker with adaptive current limiting capability according to the present invention.

100-circuit breaking mechanism, 101-isolation node, 102-high-speed switch, 103-current sensor, 200-main control board, 201-power supply, 202-voltage detection, 203-communication module, 204-MCU central processing unit, 205-current detection, 206-control module, 207-electric leakage detection conversion module, 208-temperature detection conversion module, 300-interaction module, 301-man-machine interface, 302-acousto-optic alarm, 400-detection mechanism, 401-leakage current sensor, 402-temperature sensor, 50-shell, 51-ventilation opening, 60-cooling fan, 70-dustproof mechanism, 71-dustproof cloth, 72-dust raising component, 73-first bracket, 74-dust raising rod, 75-second bracket, 103-current sensor, 75-interaction module, and the like, 76-a rotating rod, 77-a rotating impeller, 741-a shaking rod, 742-a first bevel gear, 761-a second bevel gear, 771-a fixing plate, 772-an arc-shaped sheet, 773-a first fixing piece, 774-a second fixing piece, 7411-a mounting ring, 7412-a rod body, 7413-a sealing ring, 731-a connecting plate, 732-a supporting rod, 733-a supporting ring, 80-an ash cleaning groove, 81-an ash cleaning component, 82-an ash cleaning rod, 83-an ash scraping plate, 84-a pull ring and 85-an ash discharging port.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1 to 7, the present invention provides a solid-state circuit breaker with adaptive current-limiting capability, where the solid-state circuit breaker with adaptive current-limiting capability includes a housing 50, a main control board 200, a circuit breaking mechanism 100, a detection mechanism 400, a heat dissipation fan 60, and a dust prevention mechanism 70, the main control board 200, the circuit breaking mechanism 100, the heat dissipation fan 60, and the dust prevention mechanism 70 are disposed inside the housing 50, an information output end of the detection mechanism 400 is connected to an information input end of the main control board 200, an information input end of the circuit breaking mechanism 100 is connected to an information output end of the main control board 200, a vent 51 is disposed on a back of the housing 50, an input end of the heat dissipation fan 60 corresponds to the vent 51, and an output end of the heat dissipation fan 60 corresponds to the main control board 200;

the dustproof mechanism 70 includes a dustproof cloth 71 and a dust raising component 72, the dustproof cloth 71 is detachably connected to the housing 50 and is located inside the housing 50, the dust raising component 72 includes a first support 73, a dust raising rod 74, a second support 75, a rotating rod 76 and a rotating impeller 77, the first support 73 and the second support 75 are both detachably connected to the housing 50 and are located inside the housing 50, the first support 73 is located at one end of the dustproof cloth 71 away from the ventilation opening 51, the second support 75 is located at one end of the first support 73 away from the dustproof cloth 71, an axis of the first support 73 is perpendicular to an axis of the second support 75, the dust raising rod 74 is movably arranged on the first support 73, the second support 75 is movably arranged with the dust raising rod 76, one end of the dust raising rod 74 is provided with a shaking rod 741, the other end of the dust raising rod 74 is provided with a first bevel gear 742, one end of the rotating rod 76 is provided with the rotating impeller 77, the other end of the rotating rod 76 is provided with a second bevel gear 761, the rotating impeller 77 corresponds to the output end of the cooling fan 60, and the second bevel gear 761 is engaged with the first bevel gear 742.

In this embodiment, when the main control board 200 is cooled by the heat dissipation fan 60, the air flow rate at the wind-passing position is increased, and the dust flowing in through the ventilation opening 51 is adsorbed on the dustproof cloth 71, so as to prevent the dust from being collected inside the housing 50, which causes interference to the main control board 200 and the circuit breaking mechanism 100, and meanwhile, when the heat dissipation fan 60 rotates, the airflow drives the rotary impeller 77 to rotate, so as to drive the rotation rod 76 to rotate, because the second bevel gear 761 is engaged with the first bevel gear 742, so as to drive the dust raising rod 74 to rotate, and further drive the shaking rod 741 to beat the dustproof cloth 71, so that the dust adsorbed on the dustproof cloth 71 drops, and the dustproof cloth 71 keeps a good ventilation effect all the time while preventing dust.

Further, the impeller 77 includes fixed plate 771, four arc-shaped sheets 772, first fixed part 773 and second fixed part 774, fixed plate 771 with dwang 76 fixed connection, and be located dwang 76 is kept away from the one end of second bevel gear 761, four the one end of arc-shaped sheet 772 all runs through dwang 76, and with fixed plate 771 laminates mutually, and evenly distributed is in around fixed plate 771, the cover is equipped with on the dwang 76 first fixed part 773, four the other end of arc-shaped sheet 772 all runs through after buckling dwang 76, and with first fixed part 773 laminates mutually, still the cover is equipped with on the dwang 76 second fixed part 774, second fixed part 774 and four the one end after arc-shaped sheet 772 buckles is corresponding.

In this embodiment, the fixing plate 771, one end of the four arc-shaped pieces 772, the first fixing piece 773, the other end of the four arc-shaped pieces 772, and the second fixing piece 774 are sequentially sleeved on the rotating rod 76 to form the rotating impeller 77, so that the rotating impeller 77 is arranged in a windmill structure, the effect of receiving airflow by the rotating impeller 77 is better, and the rotating speed of the rotating rod 76 is faster.

Further, the number of the shaking rods 741 is plural, the shaking rods 741 are uniformly arranged on the dust raising rod 74, and every two adjacent shaking rods 741 are arranged in a staggered structure.

In this embodiment, each two adjacent shaking rods 741 are arranged in a staggered structure, so that the frequency of hitting the dust-proof cloth 71 by the shaking rods 741 is faster, and the dust-proof cloth 71 is better cleaned.

Further, every shaking rod 741 all includes collar 7411, the body of rod 7412 and sealing washer 7413, collar 7411 cover is established raise dust rod 74's outside, collar 7411's inboard is provided with sealing washer 7413, the body of rod 7412 with collar 7411 fixed connection, and be located collar 7411's outside.

In this embodiment, the sealing ring 7413 is disposed inside the mounting ring 7411, so that the connection between the mounting ring 7411 and the dust rod 74 is tighter, the rod body 7412 and the mounting ring 7411 are fixedly connected, and the structure is more firm when the dust rod is manufactured by using an integral molding technology.

Further, each of the first bracket 73 and the second bracket 75 includes a connecting plate 731, a supporting rod 732, and a supporting ring 733, the connecting plate 731 is detachably connected to the housing 50 and is located inside the housing 50, one end of the supporting rod 732 is fixedly connected to the connecting plate 731, and the other end of the supporting rod 732 is fixedly connected to the supporting ring 733.

In this embodiment, the connecting plate 731 is fixed inside the housing 50 by screws, the rotating rod 76 and the dust raising rod 74 penetrate through the corresponding support ring 733, and the connecting plate 731 and the support ring 733 are both fixedly connected to the support rod 732.

Further, the dustproof cloth 71 with be provided with deashing groove 80 between the vent 51, be provided with deashing subassembly 81 on the deashing groove 80, deashing subassembly 81 includes deashing pole 82 and scrapes hawk 83, deashing pole 82 runs through shell 50, the one end of deashing pole 82 is provided with pull ring 84, the other end of deashing pole 82 is provided with scrape hawk 83, it is located to scrape hawk 83 in the deashing groove 80, shell 50 is close to the one end of pull ring 84 is provided with row ash mouth 85.

In this embodiment, the dust thrown down by the dust raising assembly 72 falls into the dust removing groove 80, and the dust in the dust removing groove 80 is hung to the dust discharging port 85 by the dust scraping plate 83 by pulling the pull ring 84, so that the dust is discharged, the dust is prevented from being accumulated in the dust removing groove 80, and the sealing performance of the dust-proof cloth 71 is reduced.

Further, the main control board 200 includes a power module 201, an MCU cpu 204, a detection module, a communication module 203, an interaction module 300, an analog-to-digital conversion module and a control module 206, the detection mechanism 400 includes a leakage current sensor 401 and a temperature sensor 402, the trip mechanism 100 includes a high speed switch 102, a current sensor 103 and an isolation node 101, the two ends of the power module 201 are respectively connected with the live wire and the zero wire, the detection module, the interaction module 300, the analog-to-digital conversion module and the control module 206 are all electrically connected with the MCU central processing unit 204, the control module 206 is electrically connected to the high-speed switch 102, the high-speed switch 102 and the current sensor 103 are disposed on a live wire, the current sensor 103 and the power module 201 are both electrically connected to the detection module, the leakage current sensor 401 and the temperature sensor 402 are both electrically connected to the analog-to-digital detection module.

In this embodiment, the detection module is used to detect the current and voltage status of the line in real time, and upload the detected data to the MCU cpu 204, the MCU cpu 204 is used to integrate and process the data, and then upload the integrated data to the interaction module 300, thereby displaying the current and voltage condition of the line in real time, when the leakage current sensor 401 detects the line leakage current signal, when the temperature sensor 402 detects that the line temperature is abnormally increased, the analog-digital detection module converts the detected current signal and temperature signal into digital signals, and transmits the digital signals to the MCU central processing unit 204, when the MCU cpu 204 receives the abnormal signal, the control module 206 controls the high-speed switch 102 to open rapidly, thereby breaking the circuit and reminding the staff of timely maintenance through the interactive module 300.

Further, the detection module comprises a voltage detection module 202 and a current detection module 205, the voltage detection module 202 is electrically connected to the power supply module 201, the current detection module 205 is electrically connected to the current sensor 103, the analog-to-digital conversion module comprises a leakage detection conversion module 207 and a temperature detection conversion module 208, the leakage detection conversion module 207 is electrically connected to the leakage current sensor 401, the temperature detection conversion module 208 is electrically connected to the temperature sensor 402, the interaction module 300 comprises a human-computer interface 301 and an audible and visual alarm 302, and the human-computer interface 301 and the audible and visual alarm 302 are electrically connected to the MCU central processing unit 204

In this embodiment, the voltage detection module 202 is used to detect the voltage condition of the power module 201 in real time, the current sensor 103 is used to detect the current condition on the live wire in real time, the current detection module 205 is used to upload the detection data to the MCU cpu 204, the leakage detection conversion module 207 is used to convert the detected current signal into a digital signal, the temperature detection conversion module 208 is used to convert the detected temperature signal into a digital signal, the man-machine interface 301 is used to display the current and voltage condition of the line in real time, and the sound and light alarm 302 is used to prompt the staff to perform maintenance in time.

Referring to fig. 7, the present invention further provides a control method using the above solid-state circuit breaker with adaptive current-limiting capability, including the following steps:

s1: the voltage detection module 202 is used for detecting the voltage condition of the power supply module 201 in real time, the current sensor 103 is used for detecting the current condition on the live wire in real time, and the current detection module 205 is used for uploading detection data to the MCU central processing unit 204;

s2: integrating and processing the data by using the MCU central processing unit 204, and uploading the data to the man-machine interface 301, so as to display the current and voltage conditions of the line in real time;

s3: when the leakage current sensor 401 detects a line leakage current signal, transmitting the current signal to the leakage detection conversion module 207, converting the current signal into a digital signal by using the leakage detection conversion module 207, and transmitting the digital signal to the MCU cpu 204;

s4: when the temperature sensor 402 detects that the line temperature is abnormally increased, when a temperature signal is transmitted to the temperature detection conversion module 208, the temperature signal is converted into a digital signal by the temperature detection conversion module 208 and then transmitted to the MCU central processor 204;

s5: when the MCU central processing unit 204 receives the abnormal signal, the control module 206 controls the high-speed switch 102 to open the circuit rapidly, so as to open the circuit, and the sound and light alarm 302 is activated to prompt the operator to maintain the circuit in time.

In this embodiment, the voltage detection module 202 is used to detect the voltage condition of the power module 201 in real time, the current sensor 103 is used to detect the current condition on the live wire in real time, the current detection module 205 is used to upload the detected data to the MCU cpu 204, the MCU cpu 204 is used to integrate and process the data and upload the data to the human-machine interface 301, so as to display the current and voltage condition of the line in real time, when the leakage current sensor 401 detects a line leakage current signal, the current signal is transmitted to the leakage detection conversion module 207, the leakage detection conversion module 207 is used to convert the current signal into a digital signal and transmit the digital signal to the MCU cpu 204, when the temperature sensor 402 detects an abnormal rise in the line temperature, the temperature signal is transmitted to the temperature detection conversion module 208, the temperature signal is converted into a digital signal by the temperature detection conversion module 208 and then transmitted to the MCU central processing unit 204, and when the MCU central processing unit 204 receives an abnormal signal, the control module 206 is used for controlling the high-speed switch 102 to be rapidly opened, so that a circuit is opened, the audible and visual alarm 302 is started, and a worker is reminded of timely maintaining.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (6)

1. A solid state circuit breaker with adaptive current limiting capability,

the solid-state circuit breaker with the self-adaptive current limiting capability comprises a shell, a main control board, a circuit breaking mechanism, a detection mechanism, a cooling fan and a dustproof mechanism, wherein the main control board, the circuit breaking mechanism, the cooling fan and the dustproof mechanism are arranged in the shell;

the dustproof mechanism comprises dustproof cloth and a dust raising component, the dustproof cloth is detachably connected with the shell and is positioned in the shell, the dust raising component comprises a first support, a dust raising rod, a second support, a rotating rod and a rotating impeller, the first support and the second support are both detachably connected with the shell and are positioned in the shell, the first support is positioned at one end of the dustproof cloth, which is far away from the ventilation opening, the second support is positioned at one end of the first support, which is far away from the dustproof cloth, the axis of the first support is mutually vertical to the axis of the second support, the dust raising rod is movably arranged on the first support, the rotating rod is movably arranged on the second support, one end of the dust raising rod is provided with a shaking rod, the other end of the dust raising rod is provided with a first bevel gear, and one end of the rotating rod is provided with the impeller, the other end of the rotating rod is provided with a second bevel gear, the rotating impeller corresponds to the output end of the cooling fan, and the second bevel gear is meshed with the first bevel gear.

2. The solid state circuit breaker with adaptive current limiting capability of claim 1,

the impeller that rotates includes fixed plate, four arcs, first mounting and second mounting, the fixed plate with dwang fixed connection, and be located the dwang is kept away from second bevel gear's one end, four the one end of arcs all runs through the dwang, and with the fixed plate is laminated mutually, and evenly distributed is in around the fixed plate, the cover is equipped with on the dwang first mounting, four run through after the other end of arcs all buckles the dwang, and with first mounting is laminated mutually, it is equipped with still to overlap on the dwang the second mounting, second mounting and four the one end after the arcs buckle is corresponding.

3. The solid state circuit breaker with adaptive current limiting capability of claim 1,

the quantity of shaking pole is a plurality of, and is a plurality of shaking pole evenly is provided with on the raise dust pole, every adjacent two shaking pole all is the setting of crisscross structure.

4. The solid state circuit breaker with adaptive current limiting capability of claim 1,

the main control board comprises a power supply module, an MCU (microprogrammed control unit), a detection module, a communication module, an interaction module, an analog-to-digital conversion module and a control module, the detection mechanism comprises a leakage current sensor and a temperature sensor, the circuit breaking mechanism comprises a high-speed switch, a current sensor and an isolation node, two ends of the power supply module are respectively connected with a live wire and a zero line, the detection module is connected with the interaction module, the analog-to-digital conversion module and the control module are all electrically connected with the MCU central processing unit, the control module is electrically connected with the high-speed switch and the live wire, the high-speed switch is arranged on the live wire and the current sensor, the current sensor and the power supply are all electrically connected with the detection module, and the leakage current sensor and the temperature sensor are all electrically connected with the analog-to-digital detection module.

5. The solid state circuit breaker with adaptive current limiting capability of claim 4,

the detection module comprises a voltage detection module and a current detection module, the voltage detection module is electrically connected with the power supply module, the current detection module is electrically connected with the current sensor, the analog-to-digital conversion module comprises a leakage current detection conversion module and a temperature detection conversion module, the leakage current detection conversion module is electrically connected with the leakage current sensor, the temperature detection conversion module is electrically connected with the temperature sensor, the interaction module comprises a man-machine interface and an acousto-optic alarm, and the man-machine interface and the acousto-optic alarm are electrically connected with the MCU central processing unit.

6. A control method using the solid-state circuit breaker with adaptive current limiting capability according to claim 5, characterized by the steps of:

the voltage detection module is used for detecting the voltage condition of the power supply module in real time, the current sensor is used for detecting the current condition on the live wire in real time, and the current detection module is used for uploading detection data to the MCU central processing unit;

integrating and processing the data by using the MCU central processing unit, and uploading the data to the man-machine interface so as to display the current and voltage conditions of the line in real time;

when the leakage current sensor detects a line leakage current signal, transmitting the current signal to the leakage detection conversion module, converting the current signal into a digital signal by using the leakage detection conversion module, and transmitting the digital signal to the MCU central processing unit;

when the temperature sensor detects that the temperature of the line is abnormally increased, when the temperature signal is transmitted to the temperature detection conversion module, the temperature signal is converted into a digital signal by the temperature detection conversion module and then transmitted to the MCU central processing unit;

and after the MCU central processing unit receives the abnormal signal, the control module is utilized to control the high-speed switch to be rapidly opened, so that the circuit is opened, and the acousto-optic alarm is started to remind a worker to maintain in time.

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