CN110529418B - Subway fan control cabinet and control system - Google Patents
Subway fan control cabinet and control system Download PDFInfo
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- CN110529418B CN110529418B CN201910808972.6A CN201910808972A CN110529418B CN 110529418 B CN110529418 B CN 110529418B CN 201910808972 A CN201910808972 A CN 201910808972A CN 110529418 B CN110529418 B CN 110529418B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The invention discloses a subway fan control cabinet and a control system, which belong to the technical field of large-scale control cabinets and comprise a fan motor and a cabinet body, wherein a control circuit is arranged in the cabinet body, the control circuit comprises a power supply module connected with a power grid and used for supplying power, a monitoring module used for detecting the power supply and the fan motor, an operation module used for inputting a control instruction, a starting module used for starting the fan motor and a braking module used for controlling the fan motor to stop rotating.
Description
Technical Field
The invention relates to the technical field of large-scale control cabinets, in particular to a subway fan control cabinet and a control system.
Background
At present, a switch device, a measuring instrument, a protective electrical appliance and auxiliary equipment are assembled in a closed or semi-closed metal cabinet or on a screen according to the electrical wiring requirement of a control cabinet, and the arrangement of the control cabinet meets the requirement of normal operation of a power system, is convenient to overhaul and does not endanger the safety of people and surrounding equipment. In normal operation, the circuit can be switched on or off by means of a manual or automatic switch. The fans of the subway are large fans, and the large control cabinet can be selected by the through grooves of a user when the fans of the subway are controlled.
The multifunctional frequency conversion control cabinet consists of a frequency converter, a soft starter, a single machine P L C, an I/O interlocking interface of the single machine and a three-phase switch, and can realize the frequency conversion speed regulation operation and the variable working condition operation by controlling the fans through a plurality of cables, thereby combining the fans with multiple working conditions into one fan, realizing the function of replacing the multiple fans by one fan, saving electricity and reducing the operation cost of the fans due to the fact that the fans operate at the high-efficiency point of the working conditions, also realizing the smooth soft start operation and the shutdown function of the fans, and realizing the functions of forward and reverse dual-system operation of the fans, switching the working conditions of fire or emergency ventilation and the like under the combined control of the frequency converter and the soft starter.
The above prior art solutions have the following drawbacks: when the control cabinet controls the subway fan to stop rotating, the subway fan is large in size and strong in inertia, so that the subway fan is difficult to stop rotating quickly, and the fan or a power grid can be damaged by a method for driving the fan to rotate reversely to stop rotating quickly at present.
Disclosure of Invention
The invention aims to provide a control cabinet and a control system of a subway fan, which can quickly stop the fan on the premise of not damaging the fan and a power grid.
The technical purpose of the invention is realized by the following technical scheme:
a control cabinet and a control system of a subway fan comprise a fan motor and a cabinet body, wherein a control circuit is arranged in the cabinet body, and the control circuit comprises a power module, a monitoring module, an operation module, a starting module and a braking module;
the power supply module is externally connected with a power grid and comprises a voltage and current measurer, a filter capacitor, a power supply side reactor, a rectification side reactor, a seven-time filter, a five-time filter, a rectifier, a direct current filter capacitor and a direct current filter resistor, wherein the voltage and current measurer is connected with the power grid in series, the filter capacitor is connected to the power grid side in parallel, the power supply side reactor is connected to one side of the rectifier in series, the rectification side reactor is connected to one side of the power supply side reactor in series, the seven-time filter is connected between the power supply side reactor and the rectification side reactor in parallel, the five-time filter is connected;
the monitoring module is connected with the power supply module and detects the voltage and the current of the power supply module in real time, and the monitoring module monitors the frequency of the fan motor in real time and outputs a frequency value, a voltage value and a current value;
the control module comprises a control module fixedly connected outside the cabinet body, and the control module receives an externally input instruction and sends a starting command or a stopping command according to the received instruction;
the starting module receives a starting command output by the control module, and when the starting module receives the starting command, the starting module controls the fan motor to start;
the braking module comprises a braking resistor and a frequency converter which are installed inside the cabinet body, the braking module receives a frequency value, a voltage value and a current value which are output by the monitoring module, the braking module receives a stop command which is output by the control module, after the braking module receives the stop command, the braking module is matched with the frequency converter and the braking resistor to inject a large-current direct-current braking current into the fan motor, meanwhile, the braking module controls the voltage output by the power module to change according to the received frequency value and the received voltage value, the voltage value and the frequency value keep a direct ratio, and when the frequency value output by the monitoring module is lower than a set value, the braking module stops injecting the direct-current braking current into.
By adopting the scheme, as the voltage of the power grid is larger and noise waves are more, the control cabinet is difficult to accurately control the fan motor, the power supply module filters alternating current transmitted by the power grid through the power supply side reactance and the rectification side reactance in cooperation with the seven-time filter and the five-time filter and then rectifies the alternating current, so that the power supply voltage is stable, after a user inputs a stop command, direct current braking current output by the braking module generates a constant magnetic field on a stator of the fan motor to stop the rotation of the fan motor, meanwhile, the frequency converter prevents weak magnetic and magnetic saturation phenomena from being generated by controlling the voltage value to be in direct proportion to the frequency value to reduce the impact on the fan motor, and automatically controls the braking module to stop outputting the direct current braking current when the fan motor is about to stop, so that the fan motor automatically stops rotating and the impact on the motor is reduced to the minimum, the effect of protecting the fan motor and the power grid equipment is achieved, the fan motor can be guaranteed to stop rotating within 30 seconds, and the user can further limit the stop rotating time of the fan motor by setting a set value.
The invention is further configured to: when the current value received by the braking module is larger than the threshold value, the braking module controls the current value output by the power supply module to be reduced.
By adopting the scheme, in order to prevent the frequency converter from tripping due to overcurrent flowing, and the stall condition is caused, the brake module needs to control the current value flowing through the frequency converter.
The invention is further configured to: the control circuit further comprises an environment control module, the environment control module comprises environment control equipment arranged in the cabinet body, and the environment control module receives point control commands input from the outside and controls the fan motor in a inching mode through the environment control equipment according to the point control commands.
By adopting the scheme, a user can inching control the fan motor and the environment around the fan motor through the environment control equipment on the power distribution cabinet.
The invention is further configured to: still including setting up in the control button case by fan motor, the control button case receives the instruction of external input and gives the instruction transmission and control the module.
By adopting the scheme, the control button box is close to the fan, so that the normal operation of the fan is convenient to overhaul and maintain.
The invention is further configured to: and the control module stops receiving the instructions transmitted by other sources after receiving the instructions transmitted by the control button box.
Through adopting above-mentioned scheme, can guarantee the control priority of control button case, ensure that maintenance personal is difficult for receiving the influence of other control ends when maintaining the fan.
The invention is further configured to: the subway train control system is characterized by further comprising a computer platform arranged in the subway train control room, wherein the computer platform receives an external instruction and sends the instruction to the control module, the computer platform receives and stores a pre-programmed program, and the pre-programmed program controls the computer platform to send the instruction to the control module at regular time.
By adopting the scheme, a user can control all fans in the subway in a vehicle control room of the subway through the computer platform, and meanwhile, the computer platform can control the fans at regular time through a preset program.
The invention is further configured to: the control center receives an instruction input from the outside and specifies a target computer platform, the control center sends the instruction to the specified computer platform, and the computer platform transmits the instruction to the control module after receiving the instruction.
By adopting the scheme, the user can also control the subway fan in one region through the control center.
The invention is further configured to: the control circuit further comprises a display module, the display module receives the frequency value, the voltage value and the current value output by the monitoring module, the display module comprises an interface screen fixedly connected outside the cabinet body, the display module transmits the frequency value, the voltage value and the current value to the interface screen, the control button box and the computer platform for displaying, and the control center calls the display module to transmit the frequency value, the voltage value and the current value to the computer platform for displaying.
By adopting the scheme, the display module can display the data detected by the monitoring module to a user for the user to refer to.
The invention is further configured to: a cooling fan is fixedly connected in the cabinet body close to the brake resistor, a cooling air channel is formed in one side, away from the brake resistor, of the cabinet body corresponding to the cooling fan, a plurality of semiconductor refrigerators are fixedly connected in the cooling air channel, the refrigerating ends of the semiconductor refrigerators are close to the cooling fan, and the heating ends of the semiconductor refrigerators are far away from the cooling fan;
the control circuit further comprises a cooling module, the cooling module receives the stop command output by the control module, and when the cooling module receives the stop command, the cooling module controls the semiconductor refrigerator and the cooling fan to be powered on.
Through adopting above-mentioned scheme, the brake resistance can send a large amount of heats when switch board control fan motor stall, needs the thermantidote to blow cold wind to the brake resistance this moment and reduce the temperature of brake resistance, prevents that the too high influence of brake resistance temperature from to the control of fan motor, damaging the switch board even.
The invention is further configured to: the semiconductor refrigerators are arranged in the cold air channel in an array mode, the semiconductor refrigerators are all obliquely arranged, and the oblique directions of the adjacent semiconductor refrigerators are opposite.
By adopting the scheme, the wind can be blocked by the semiconductor refrigerator and becomes dispersed when flowing through the semiconductor refrigerator, so that the air is fully contacted with the semiconductor refrigerator before entering the cabinet body, and the temperature of the air entering the cabinet body is ensured to be low enough.
In conclusion, the invention has the following beneficial effects:
1. because the voltage of the power grid is larger and the noise waves are more at the same time, the control cabinet is difficult to accurately control the fan motor, the power supply module filters the alternating current transmitted by the power grid through the power supply side reactance and the rectification side reactance in cooperation with a seven-time filter and a five-time filter and then rectifies the alternating current, so that the power supply voltage is stable, after a user inputs a stop command, the direct current braking current output by the braking module generates a constant magnetic field on the stator of the fan motor to prevent the fan motor from rotating, meanwhile, the frequency converter prevents the weak magnetic field and the magnetic saturation phenomenon from generating by controlling the voltage value to be in direct proportion to the frequency value, so that the impact on the fan motor is reduced, the direct current braking current output by the braking module is automatically controlled to stop when the fan motor stops rotating, the fan motor automatically stops rotating, the impact on the motor is reduced to the minimum, and the effect of protecting the fan motor and the, meanwhile, the fan motor can be guaranteed to stop within 30 seconds, and the user can further limit the stop time of the fan motor by setting a set value;
2. so that the wind can be blocked by the semiconductor cooler and becomes dispersed when flowing through the semiconductor cooler, and the air is fully contacted with the semiconductor cooler before entering the cabinet body, and the temperature of the air entering the cabinet body is ensured to be low enough.
Drawings
FIG. 1 is an overall system block diagram of an embodiment;
FIG. 2 is a system block diagram of a highlight control circuit in an embodiment;
FIG. 3 is a schematic circuit diagram of a highlighted power module in an embodiment;
FIG. 4 is a schematic view of a protruding cabinet in the embodiment;
FIG. 5 is a schematic circuit diagram of a highlighted fan motor and frequency converter in an embodiment;
FIG. 6 is a schematic diagram of the highlighted ring control device, brake resistor and frequency converter in an embodiment;
FIG. 7 is a sectional view of a cooling fan and a cooling air duct in the embodiment.
In the figure, 1, a fan motor; 2. a cabinet body; 21. a control circuit; 211. a control module; 212. a cooling module; 213. a starting module; 214. a brake module; 2141. a brake resistor; 2142. a frequency converter; 215. an environment control module; 2151. an environmental control device; 216. a power supply module; 2161. a voltage and current measurer; 2162. a filter capacitor; 2163. a power supply side reactance; 2164. a seventh order filter; 2165. a fifth filter; 2166. a rectifier side reactance; 2167. a rectifier; 2168. a direct current filter resistor; 2169. a DC filter capacitor; 22. an interface screen; 23. a cooling fan; 24. a cold air passage; 241. a semiconductor refrigerator; 3. a button control cabinet; 4. a computer platform; 5. and a control center.
Detailed Description
Example (b): a control cabinet and a control system of a subway fan are shown in figures 1 and 2 and comprise a fan motor 1, a cabinet body 2, a control button box arranged beside the fan motor 1, a computer platform 4 arranged in a subway car control room and a control center 5 arranged in a central control room. A control circuit 21 is provided in the cabinet 2. The control circuit 21 includes a power module 216, a monitoring module, a manipulation module 211, a start module 213, a brake module 214, a ring control module 215, a power module 216, and a display module.
As shown in fig. 2 and 3, the power module 216 is externally connected to the grid, and the power module 216 includes a voltage/current measurer 2161 connected in series with the grid, a filter capacitor 2162 connected in parallel to the grid side, a source-side reactance 2163 connected in series to the rectifier 2167 side, a rectifier-side reactance 2166 connected in series to the source-side reactance 2163 side, a seventh-order filter 2164 connected in parallel between the source-side reactance 2163 and the rectifier-side reactance 2166, a fifth-order filter 2165 connected in parallel between the source-side reactance 2163 and the rectifier-side reactance 2166, a rectifier 2167 connected in series to the rectifier-side reactance 2166 side, and a dc filter capacitor 2169 and a dc filter resistor 2168 electrically connected to the rectifier 2167 and connected in parallel to each other. The power module 216 filters the ac power transmitted from the power grid through the power-side reactor 2163 and the rectifying-side reactor 2166 in cooperation with the seven-time filter 2164 and the five-time filter 2165, and then rectifies the ac power, so that the power supply voltage is stable.
As shown in fig. 4 and 5, a surface screen 22 is fixedly connected to the outside of the cabinet 2, and a frequency converter 2142 is installed in the cabinet 2. The frequency converter 2142 is electrically connected between the fan motor 1 and a power supply, and controls voltage and current transmitted to the fan motor 1.
Referring back to fig. 2, the monitoring module is connected to the power module 216 through the voltage/current measurer 2161 and detects the voltage and current of the power module 216 in real time, and the monitoring module monitors the frequency of the fan motor 1 in real time and outputs a frequency value, a voltage value, and a current value. The control module 211 includes a control module fixedly connected to the outside of the cabinet 2, and the control module receives an externally input command and sends a start command or a stop command according to the received command. The starting module 213 receives the starting command output by the control module 211, and when the starting module 213 receives the starting command, the fan motor 1 is controlled to start.
As shown in fig. 2, the frequency value, the voltage value and the current value output by the monitoring module are received by the display module, and the frequency value, the voltage value and the current value are transmitted to the interface screen 22 for displaying.
As shown in fig. 2 and 6, the braking module 214 includes a braking resistor 2141 installed inside the cabinet 2, and the braking module 214 receives the frequency value, the voltage value and the current value output by the monitoring module. The braking module 214 receives the stop command output by the control module 211, and after the braking module 214 receives the stop command, the braking module 214 injects a large-current dc braking current to the blower motor 1 in cooperation with the frequency converter 2142 and the braking resistor 2141, and meanwhile, the braking module 214 controls the voltage output by the power module 216 to change according to the received frequency value and voltage value, so that the voltage value is in direct proportion to the frequency value. When the frequency value output by the monitoring module is lower than the set value, the braking module 214 stops injecting the dc braking current into the fan motor 1. When the current value received by the brake module 214 is greater than the threshold value, the brake module 214 controls the current value output by the power module 216 to decrease. After the user inputs the stop command, the dc braking current output by the braking module 214 generates a constant magnetic field on the stator of the fan motor 1 to stop the rotation of the fan motor 1, and the frequency converter 2142 controls the voltage value to keep proportional to the frequency value to avoid the weak magnetic field and the magnetic saturation phenomenon, thereby reducing the impact on the fan motor 1. When the fan motor 1 is about to stop rotating, the braking module 214 is automatically controlled to stop outputting the direct current braking current, so that the fan motor 1 automatically stops rotating, and the impact born by the motor is reduced to the minimum.
As shown in fig. 2 and 6, the environmental control module 215 includes an environmental control device 2151 installed in the cabinet 2, and the environmental control module 215 receives a point control command input from the outside and controls the fan motor 1 by the point control device 2151 according to the point control command. The user can inching control fan motor 1 and the environment around fan motor 1 through environmental control device 2151 on the switch board.
As shown in fig. 1 and 2, the control button box receives an instruction input from the outside and transmits the instruction to the manipulation module 211. The control module 211 stops receiving the instruction transmitted from other sources after receiving the instruction transmitted from the control button box. The control button box is close to the fan, so that the normal operation of the fan is convenient to overhaul and maintain. Meanwhile, the environmental control module 215 is also needed to ensure the control priority of the control button box, so that maintenance personnel are not easily affected by other control ends when the fan is maintained.
As shown in fig. 1 and fig. 2, the computer platform 4 receives an external instruction and sends the instruction to the manipulation module 211, and the computer platform 4 receives and stores a preprogrammed program, which controls the computer platform 4 to send the instruction to the manipulation module 211 at regular time. The control center 5 receives an instruction input from the outside and specifies the target computer platform 4, the control center 5 sends the instruction to the specified computer platform 4, and the computer platform 4 transmits the instruction to the control module 211 after receiving the instruction. A user can control all fans in the subway in a vehicle control room of the subway through the computer platform 4, and meanwhile the computer platform 4 can control the fans at regular time through a preset program. The user can control the subway fans in one area through the control center 5.
As shown in fig. 1 and 2, the frequency value, the voltage value and the current value are transmitted to the control button box and the computer platform 4 by the display module and displayed, and the frequency value, the voltage value and the current value sent to the computer platform 4 by the control center 5 by the display module are displayed. The display module can display the data detected by the monitoring module to a user for the user to refer to.
As shown in fig. 6 and 7, a cooling fan 23 is fixedly connected to a portion of the cabinet 2 near the brake resistor 2141, and a cooling air channel 24 is formed on a side of the cabinet 2, which is far from the brake resistor 2141, corresponding to the cooling fan 23. A plurality of semiconductor refrigerators 241 are fixedly connected to the inside of the cold air passage 24. The cooling end of the semiconductor cooler 241 is close to the cooling fan 23, and the heating end of the semiconductor cooler 241 is far away from the cooling fan 23. The semiconductor refrigerators 241 are arrayed in the cold air passage 24, the semiconductor refrigerators 241 are all arranged obliquely and the adjacent semiconductor refrigerators 241 are inclined in opposite directions. The wind may be blocked by the semiconductor cooler 241 and become dispersed while flowing through the semiconductor cooler 241 so that the air is sufficiently contacted with the semiconductor cooler 241 before entering the cabinet 2, ensuring that the temperature of the air entering the cabinet 2 is sufficiently low.
Referring back to fig. 2, the cooling module 212 receives the stop command output by the control module 211, and when the cooling module 212 receives the stop command, the cooling module 212 controls the semiconductor cooler 241 and the cooling fan 23 to be powered. Braking resistance 2141 can send a large amount of heats when switch board control fan motor 1 stall, needs thermantidote 23 to blow cold wind to braking resistance 2141 this moment and reduces braking resistance 2141's temperature, prevents that braking resistance 2141 high temperature from influencing the control to fan motor 1, even damages the switch board.
The use method comprises the following steps: the user can control the operation of the fan motor 1 through the control center 5, the computer platform 4, the button control box and the environmental control device 2151. When the fan motor 1 is controlled to stop or rotate reversely, the fan motor 1 can stop within 30S, and can rotate reversely immediately if the fan motor 1 needs to rotate reversely. The power can guarantee that the current flowing through the frequency converter 2142 can be accurately monitored and controlled after filtering, the equipment operation is stable, the impact on the power grid equipment and the fan equipment caused by the stop of the fan can be effectively reduced, and the service lives of the power grid equipment and the fan equipment are greatly prolonged.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. The utility model provides a subway fan switch board and control system, includes fan motor (1) and the cabinet body (2), its characterized in that: a control circuit (21) is arranged in the cabinet body (2), and the control circuit (21) comprises a power supply module (216), a monitoring module, a control module (211), a starting module (213) and a braking module (214);
the power supply module (216) is externally connected with a power grid, and the power supply module (216) comprises a voltage and current measurer (2161) connected with the power grid in series, a filter capacitor (2162) connected with the power grid side in parallel, a power supply side reactance (2163) connected with the rectifier (2167) side in series, a rectifying side reactance (2166) connected with the power supply side reactance (2163) side in series, a seven-time filter (2164) connected between the power supply side reactance (2163) and the rectifying side reactance (2166) in parallel, a five-time filter (2165) connected between the power supply side reactance (2163) and the rectifying side reactance (2166) in parallel, a rectifier (2167) connected with the rectifying side reactance (2166) side in series, and a direct current filter capacitor (2169) and a direct current filter resistor (2168) which are connected with the rectifier (2167) in parallel;
the monitoring module is connected with the power supply module (216) and detects the voltage and the current of the power supply module (216) in real time, monitors the frequency of the fan motor (1) in real time and outputs a frequency value, a voltage value and a current value;
the control module (211) comprises a control module fixedly connected outside the cabinet body (2), and the control module receives an externally input instruction and sends a starting command or a stopping command according to the received instruction;
the starting module (213) receives a starting command output by the control module (211), and when the starting module (213) receives the starting command, the fan motor (1) is controlled to start;
the braking module (214) comprises a braking resistor (2141) and a frequency converter (2142) which are installed inside the cabinet body (2), the braking module (214) receives a frequency value, a voltage value and a current value which are output by the monitoring module, the braking module (214) receives a stopping command which is output by the control module (211), after the braking module (214) receives the stopping command, the braking module (214) cooperates with the frequency converter (2142) and the braking resistor (2141) to inject a large-current direct-current braking current into the fan motor (1), meanwhile, the braking module (214) controls the voltage change output by the power supply module (216) according to the received frequency value and voltage value, the voltage value is in direct proportion to the frequency value, and when the frequency value output by the monitoring module is lower than a set value, the braking module (214) stops injecting the direct-current braking current into the fan motor (1).
2. The subway fan control cabinet and control system of claim 1, characterized in that: when the current value received by the brake module (214) is larger than the threshold value, the brake module (214) controls the current value output by the power supply module (216) to be reduced.
3. The subway fan control cabinet and control system of claim 1, characterized in that: the control circuit (21) further comprises a ring control module (215), the ring control module (215) comprises a ring control device (2151) installed in the cabinet body (2), and the ring control module (215) receives a point control command input from the outside and controls the fan motor (1) in a inching mode through the ring control device (2151) according to the point control command.
4. A subway fan control cabinet and control system as claimed in claim 3, characterized in that: still including setting up in the other control button case of fan motor (1), control button case receives the instruction of external input and gives control module (211) with the instruction transmission.
5. A subway fan control cabinet and control system as claimed in claim 4, characterized in that: and the control module (211) stops receiving the instructions transmitted by other sources after receiving the instructions transmitted by the control button box.
6. A subway fan control cabinet and control system as claimed in claim 5, characterized in that: the subway train control system is characterized by further comprising a computer platform (4) arranged in a subway train control room, the computer platform (4) receives an external instruction and sends the instruction to the control module (211), the computer platform (4) receives and stores a pre-programmed program, and the pre-programmed program controls the computer platform (4) to send the instruction to the control module (211) at regular time.
7. A subway fan control cabinet and control system as claimed in claim 6, characterized in that: the system is characterized by further comprising a control center (5), wherein the control center (5) receives an instruction input from the outside and specifies a target computer platform (4), the control center (5) sends the instruction to the specified computer platform (4), and the computer platform (4) transmits the instruction to the control module (211) after receiving the instruction.
8. A subway fan control cabinet and control system as claimed in claim 7, characterized in that: the control circuit (21) further comprises a display module, the display module receives the frequency value, the voltage value and the current value output by the monitoring module, the display module comprises an interface screen (22) fixedly connected to the outside of the cabinet body (2), the display module transmits the frequency value, the voltage value and the current value to the interface screen (22), the control button box and the computer platform (4) for displaying, and the control center (5) calls the display module to transmit the frequency value, the voltage value and the current value to the computer platform (4) for displaying.
9. The subway fan control cabinet and control system of claim 1, characterized in that: a cooling fan (23) is fixedly connected to the position, close to the brake resistor (2141), in the cabinet body (2), a cooling air channel (24) is formed in one side, far away from the brake resistor (2141), of the cabinet body (2) corresponding to the cooling fan (23), a plurality of semiconductor refrigerators (241) are fixedly connected in the cooling air channel (24), the refrigerating end of each semiconductor refrigerator (241) is close to the corresponding cooling fan (23), and the heating end of each semiconductor refrigerator (241) is far away from the corresponding cooling fan (23);
the control circuit (21) further comprises a cooling module (212), the cooling module (212) receives the stop command output by the control module (211), and when the cooling module (212) receives the stop command, the cooling module (212) controls the semiconductor refrigerator (241) and the cooling fan (23) to be powered on.
10. The subway fan control cabinet and control system of claim 9, characterized in that: the semiconductor refrigerators (241) are arranged in an array in the cold air channel (24), the semiconductor refrigerators (241) are all arranged in an inclined mode, and the inclined directions of the adjacent semiconductor refrigerators (241) are opposite.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910808972.6A CN110529418B (en) | 2019-08-29 | 2019-08-29 | Subway fan control cabinet and control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910808972.6A CN110529418B (en) | 2019-08-29 | 2019-08-29 | Subway fan control cabinet and control system |
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| CN110529418A CN110529418A (en) | 2019-12-03 |
| CN110529418B true CN110529418B (en) | 2020-07-10 |
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| CN111076344B (en) * | 2019-12-09 | 2020-11-24 | 珠海格力电器股份有限公司 | Control method and system for automatically adjusting fan frequency reduction rate and storage medium |
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| CN2755861Y (en) * | 2004-12-21 | 2006-02-01 | 天津市通风机厂 | Fan control cabinet unit apparatus of speed-adjusting reversing dual system with variable frequency in subway |
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| CN102251980A (en) * | 2011-08-10 | 2011-11-23 | 浙江万可电气设备有限公司 | Subway tunnel fan control system |
| CN207315718U (en) * | 2017-10-31 | 2018-05-04 | 浙江万可电气设备有限公司 | A kind of underground fan switch board with automatic early-warning |
| CN109322691A (en) * | 2018-10-22 | 2019-02-12 | 中铁第四勘察设计院集团有限公司 | The energy consuming brake of tunnel blower |
| CN109861589A (en) * | 2019-04-05 | 2019-06-07 | 江苏格博自动化设备有限公司 | A kind of the slewing control device and control method of band brake resistance unit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10422347B2 (en) * | 2017-02-10 | 2019-09-24 | Asia Vital Components (China) Co., Ltd. | Braking structure for fan |
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2019
- 2019-08-29 CN CN201910808972.6A patent/CN110529418B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2755861Y (en) * | 2004-12-21 | 2006-02-01 | 天津市通风机厂 | Fan control cabinet unit apparatus of speed-adjusting reversing dual system with variable frequency in subway |
| CN101202528A (en) * | 2006-12-11 | 2008-06-18 | 丹佛斯传动有限公司 | Electronic device and electric motor frequency converter |
| CN102251980A (en) * | 2011-08-10 | 2011-11-23 | 浙江万可电气设备有限公司 | Subway tunnel fan control system |
| CN207315718U (en) * | 2017-10-31 | 2018-05-04 | 浙江万可电气设备有限公司 | A kind of underground fan switch board with automatic early-warning |
| CN109322691A (en) * | 2018-10-22 | 2019-02-12 | 中铁第四勘察设计院集团有限公司 | The energy consuming brake of tunnel blower |
| CN109861589A (en) * | 2019-04-05 | 2019-06-07 | 江苏格博自动化设备有限公司 | A kind of the slewing control device and control method of band brake resistance unit |
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| CN110529418A (en) | 2019-12-03 |
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Denomination of invention: Subway fan control cabinet and control system Effective date of registration: 20221128 Granted publication date: 20200710 Pledgee: Lianghu Sub-branch of Zhejiang Shangyu Rural Commercial Bank Co.,Ltd. Pledgor: ZHEJIANG WANKE ELECTRIC EQUIPMENT CO.,LTD. Registration number: Y2022980023794 |
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