CN212935801U - Cooling fan of medium-voltage frequency converter cabinet and adjusting device of air conditioner - Google Patents
Cooling fan of medium-voltage frequency converter cabinet and adjusting device of air conditioner Download PDFInfo
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- CN212935801U CN212935801U CN202022157728.9U CN202022157728U CN212935801U CN 212935801 U CN212935801 U CN 212935801U CN 202022157728 U CN202022157728 U CN 202022157728U CN 212935801 U CN212935801 U CN 212935801U
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Abstract
The utility model belongs to the technical field of control, especially, relate to a cooling fan of medium voltage inverter cabinet and adjusting device of air conditioner. The cooling fan of the medium-voltage frequency converter cabinet and the adjusting device of the air conditioner comprise a motor frequency converter, a motor, a first cooling fan module, a second cooling fan module, an air conditioner module and a temperature sensor. The first cooling fan module comprises a first cooling fan, a first contact of the contactor, a coil of the intermediate relay and a contact of the intermediate relay; the second cooling fan module comprises a second cooling fan, a second contact of the contactor, a coil of the first temperature controller and a contact of the first temperature controller; the air conditioning module comprises an air conditioner, a third contact of the contactor, a coil of the second temperature controller and a contact of the second temperature controller. From this, this cooling fan of medium-voltage inverter cabinet and adjusting device of air conditioner have solved the radiating problem of different operating mode down converters to the waste of electric energy has been reduced.
Description
Technical Field
The utility model belongs to the technical field of control, especially, relate to a cooling fan of medium voltage inverter cabinet and adjusting device of air conditioner.
Background
The main advantages of frequency converters are flexible control, smooth start-up and shut-down performance, and significant energy savings from fans and pumps operating under variable loads. Most of the frequency converters and the accessory electronic accessories thereof are integrated into the electric cabinet, the frequency converters not only improve the system efficiency, but also have very high efficiency, and the loss is only 2 to 4 percent. However, because the electric energy conversion in the high-power medium-voltage frequency converter (i.e. the variable output frequency ac motor driving device with a voltage level higher than 690V and lower than 10000V) is very large, even if the efficiency loss is low, waste heat of several kilowatts to tens of kilowatts is generated, and if the heat dissipation problem of the frequency converter is not well treated, the service state and the service life of the frequency converter are affected, and even the frequency converter is damaged.
The built-in fan for heat dissipation is generally used for a universal frequency converter with small capacity. By correctly installing the frequency converter, the heat dissipation capacity of the built-in fan of the frequency converter can be maximized. The built-in fan can take away the heat inside the frequency converter. And finally dissipating heat through the iron plate of the box body where the frequency converter is located. If a plurality of frequency converters are arranged in the medium-voltage frequency converter or the frequency converter control box with larger power, the heat dissipation effect is not very obvious.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides a cooling fan of medium-voltage inverter cabinet and adjusting device of air conditioner has solved the heat dissipation problem in the motor converter under different work condition to the waste of electric energy has been reduced.
(II) technical scheme
In order to achieve the above object, the utility model discloses a main technical scheme include:
the utility model provides a cooling fan and air conditioner adjusting device of a medium voltage frequency converter cabinet, which comprises a motor frequency converter, a motor, a first cooling fan module, a second cooling fan module, an air conditioner module and a temperature sensor;
the first cooling fan module, the second cooling fan module and the air conditioning module are all used for cooling the motor frequency converter and are connected in parallel;
the first cooling fan module comprises a first cooling fan, a first contact of the contactor, a coil of the intermediate relay and a contact of the intermediate relay;
the second cooling fan module comprises a second cooling fan, a second contact of the contactor, a coil of the first temperature controller and a contact of the first temperature controller;
the air conditioning module comprises an air conditioner, a third contact of the contactor, a coil of the second temperature controller and a contact of the second temperature controller;
the first cooling fan, the second cooling fan and the temperature sensor are arranged inside the motor frequency converter, and the air conditioner is arranged outside the motor frequency converter;
the temperature sensor is respectively connected with the coil of the first temperature controller and the coil of the second temperature controller.
Preferably, in the first cooling fan module;
the zero line end of the power supply is connected with the fire line end of the power supply through a first cooling fan and a contact of an intermediate relay which are connected in series;
and a coil of the intermediate relay and a first contact of the contactor are connected in parallel with the contact of the first cooling fan and the intermediate relay.
Preferably, in the second cooling fan module;
the zero line end of the power supply is connected with the fire line end of the power supply through a second cooling fan and a contact of the first temperature controller which are connected in series;
and a coil of the first temperature controller and a second contact of the contactor are connected in parallel with the second cooling fan and the contact of the first temperature controller.
Preferably, in the air conditioning module;
the zero line end of the power supply is connected with the fire line end of the power supply through the series air conditioner and a contact of the second temperature controller;
and the coil of the second temperature controller and the third contact of the contactor are connected with the contact of the air conditioner and the second temperature controller in parallel.
Preferably, the first contact of the contactor, the second contact of the contactor, and the third contact of the contactor are opened or closed simultaneously.
Preferably, the first contact of the contactor, the second contact of the contactor, and the third contact of the contactor are all normally open contacts.
Preferably, the adjusting device of the cooling fan and the air conditioner of the medium voltage inverter cabinet further comprises;
and the isolating switch is connected with the motor frequency converter in series.
Preferably, the adjusting device of the cooling fan and the air conditioner of the medium voltage inverter cabinet further comprises;
and the circuit breaker is connected with the motor frequency converter in series.
Preferably, the contacts of the intermediate relay are normally open contacts.
Preferably, the contacts of the first temperature controller and the contacts of the second temperature controller are both normally open contacts.
(III) advantageous effects
The utility model has the advantages that:
the utility model provides a pair of adjusting device of cooling fan and air conditioner of medium-voltage inverter cabinet, through setting up first cooling fan module, second cooling fan module, air conditioning module and temperature sensor, when the temperature in the motor converter is different, first cooling fan module, second cooling fan module, air conditioning module's operational mode is different, the heat dissipation problem that leads to owing to the difference of temperature in the motor converter under different work condition has been solved, thereby the waste of electric energy has been reduced, and equipment trouble and damage have been reduced.
Drawings
Fig. 1 is a schematic structural diagram of a cooling fan of a medium voltage inverter cabinet and an adjusting device of an air conditioner disclosed in this embodiment.
[ description of reference ]
1: a motor frequency converter; 21: a first normally open contact KA11 of the contactor;
22: a second normally open contact KA12 of the contactor; 23: a third normally open contact KA13 of the contactor;
3: coil KM1 of the intermediate relay; 4: coil KM2 of the first temperature controller;
5: coil KM3 of the second temperature controller; 6: a normally open contact KM11 of the intermediate relay;
7: a normally open contact KM21 of the first temperature controller;
8: a normally open contact KM31 of the second temperature controller; 9: a first cooling fan;
10: a second cooling fan; 11: an air conditioner; 12: an electric motor; 13: an isolator QA;
14: and a breaker QF.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.
As shown in fig. 1, the present embodiment provides a cooling fan of a medium voltage inverter cabinet and an adjusting device of an air conditioner, where the control device includes a motor inverter 1, a motor 12, a first cooling fan module, a second cooling fan module, an air conditioner module, and a temperature sensor. The first cooling fan module, the second cooling fan module and the air conditioner module are all used for cooling the motor frequency converter 1, and the first cooling fan module, the second cooling fan module and the air conditioner module are connected in parallel.
Wherein the first cooling fan module comprises a first cooling fan 9, a first contact of the contactor, a coil (KM1)3 of the intermediate relay and a contact of the intermediate relay, the second cooling fan module comprises a second cooling fan 10, a second contact of the contactor, a coil (KM2)4 of the first temperature controller and a contact of the first temperature controller, and the air conditioner module comprises an air conditioner 11, a third contact of the contactor, a coil (KM3)5 of the second temperature controller and a contact of the second temperature controller. The temperature sensors are respectively connected with a coil (KM2)4 of the first temperature controller and a coil (KM3)5 of the second temperature controller.
The cooling fan of medium voltage inverter cabinet and adjusting device of air conditioner that this embodiment provided, through setting up first cooling fan module, second cooling fan module, air conditioning module and temperature sensor, when the temperature in the motor converter 1 is different, first cooling fan module, second cooling fan module, air conditioning module's operational mode is different, the heat dissipation problem that leads to owing to the difference of temperature in the motor converter 1 under different operating modes has been solved, thereby the waste of electric energy has been reduced, and equipment trouble and damage have been reduced.
The operation circuit of the first cooling fan module includes: the neutral terminal N of the power supply is connected with the live terminals L1, L2 or L3 (connected in the figure is L2) of the power supply through a first cooling fan 9 and a normally open contact (KM11)6 (in the figure, the first cooling fan 9 and the normally open contact (KM11)6 of the intermediate relay are connected in sequence) connected in series. And a coil (KM1)3 of the intermediate relay and a first normally open contact (KA11)21 of the contactor are connected in parallel with the first cooling fan 9 and a normally open contact (KM11)6 of the intermediate relay. After the motor frequency converter 1 is started, the contactors arranged in the cooling fan of the medium-voltage frequency converter cabinet and the adjusting device of the air conditioner are opened, the first normally open contact (KA11)21 of the contactor is closed, and the operation loop of the first cooling fan module is started.
The operation circuit of the second cooling fan module comprises; the neutral terminal N of the power supply is connected with the live wire terminals L1, L2 or L3 (connected as L2 in the figure) of the power supply through a normally open contact (KM21)7 (in the figure, the normally open contacts (KM21)7 of the second cooling fan 10 and the first temperature controller are connected in series). And a coil (KM2)4 of the first temperature controller and a second normally open contact (KA12)22 of the contactor are connected in parallel with the second cooling fan 10 and the normally open contact (KM21)7 of the first temperature controller. After the motor frequency converter 1 is started, the contactors arranged in the cooling fan of the medium-voltage frequency converter cabinet and the adjusting device of the air conditioner are opened, the first normally-open contact (KA11)21 of the contactor is closed, and meanwhile, after the coil (KM2)4 of the first temperature controller is electrified, the operation loop of the second cooling fan module is started.
The operation loop of the air conditioning module comprises; the neutral line end N of the power supply is connected with the live line end L1, L2 or L3 (connected as L2 in the figure) of the power supply through a normally open contact (KM31)8 (the air conditioner 11 and the normally open contact (KM31)8 of the second temperature controller are connected in series in the figure). And a coil (KM3)5 of the second temperature controller and a third normally open contact (KA13)23 of the contactor are connected with the air conditioner 11 and the normally open contact (KM31)8 of the second temperature controller in parallel. After the motor frequency converter 1 is started, a contactor arranged in a cooling fan of a medium-voltage frequency converter cabinet and a regulating device of an air conditioner is started, a first normally open contact (KA11)21 of the contactor is closed, and after a coil (KM3)5 of a second temperature controller is powered on, an operation loop of an air conditioner module is started.
It should be noted that when the motor inverter 1 is opened or closed, the first normally open contact (KA11)21 of the contactor, the second normally open contact (KA12)22 of the contactor, and the third normally open contact (KA13)23 of the contactor are simultaneously opened or closed. When the operation loop of the second cooling fan module operates, the operation loops of the first cooling fan module operate simultaneously; when the operation circuit of the air conditioning module operates, the operation circuits of the first cooling fan module and the second cooling fan module operate simultaneously.
In particular, in order to ensure the personal safety of the maintainers, a disconnecting switch (QA)13 and a circuit breaker (QF)14 which are connected with the motor frequency converter 1 in series can be arranged in a cooling fan of the medium-voltage frequency converter cabinet and an adjusting device of the air conditioner. When the maintenance personnel overhauls the circuit, the disconnecting switch (QA)13 and the breaker (QF)14 are maintained in an open state.
While embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that modifications, alterations, substitutions and variations may be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. A cooling fan of a medium-voltage frequency converter cabinet and an adjusting device of an air conditioner comprise a motor frequency converter and a motor, and are characterized by also comprising a first cooling fan module, a second cooling fan module, an air conditioner module and a temperature sensor;
the first cooling fan module, the second cooling fan module and the air conditioning module are all used for cooling the motor frequency converter and are connected in parallel;
the first cooling fan module comprises a first cooling fan, a first contact of the contactor, a coil of the intermediate relay and a contact of the intermediate relay;
the second cooling fan module comprises a second cooling fan, a second contact of the contactor, a coil of the first temperature controller and a contact of the first temperature controller;
the air conditioner module comprises an air conditioner, a third contact of the contactor, a coil of a second temperature controller and a contact of the second temperature controller;
the temperature sensor is respectively connected with the coil of the first temperature controller and the coil of the second temperature controller.
2. The adjusting apparatus of a cooling fan and an air conditioner of a medium voltage inverter cabinet according to claim 1, wherein in the first cooling fan module;
the zero line end of the power supply is connected with the fire line end of the power supply through the contacts which are connected with the first cooling fan and the intermediate relay in series;
and a coil of the intermediate relay and a first contact of the contactor are connected in parallel with the first cooling fan and a contact of the intermediate relay.
3. The adjusting device of the cooling fan and the air conditioner of the medium voltage inverter cabinet according to claim 1 or 2, wherein in the second cooling fan module;
the zero line end of the power supply is connected with the fire line end of the power supply through the contacts which are connected with the second cooling fan and the first temperature controller in series;
and a coil of the first temperature controller and a second contact of the contactor are connected in parallel with the second cooling fan and the contact of the first temperature controller.
4. The adjusting apparatus of a cooling fan and an air conditioner of a medium voltage inverter cabinet according to claim 3, wherein in the air conditioner module;
the zero line end of the power supply is connected with the fire line end of the power supply through the contact which is connected with the air conditioner and the second temperature controller in series;
and a coil of the second temperature controller and a third contact of the contactor are connected in parallel with the air conditioner and the contact of the second temperature controller.
5. The adjusting apparatus of a cooling fan and an air conditioner of a medium voltage inverter cabinet according to claim 4,
the first contact of the contactor, the second contact of the contactor, and the third contact of the contactor are simultaneously opened or closed.
6. The adjusting apparatus of a cooling fan and an air conditioner of a medium voltage inverter cabinet according to claim 5,
the first contact of the contactor, the second contact of the contactor and the third contact of the contactor are all normally open contacts.
7. The adjusting device of the cooling fan and the air conditioner of the medium voltage inverter cabinet as claimed in claim 4, further comprising;
and the isolating switch is connected with the motor frequency converter in series.
8. The adjusting apparatus of a cooling fan and an air conditioner of a medium voltage inverter cabinet according to claim 7, further comprising;
and the circuit breaker is connected with the motor frequency converter in series.
9. The adjusting apparatus of a cooling fan and an air conditioner of a medium voltage inverter cabinet according to claim 1,
and the contact of the intermediate relay is a normally open contact.
10. The adjusting apparatus of a cooling fan and an air conditioner of a medium voltage inverter cabinet according to claim 1,
and the contact of the first temperature controller and the contact of the second temperature controller are both normally open contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022157728.9U CN212935801U (en) | 2020-09-27 | 2020-09-27 | Cooling fan of medium-voltage frequency converter cabinet and adjusting device of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022157728.9U CN212935801U (en) | 2020-09-27 | 2020-09-27 | Cooling fan of medium-voltage frequency converter cabinet and adjusting device of air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212935801U true CN212935801U (en) | 2021-04-09 |
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ID=75310825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022157728.9U Active CN212935801U (en) | 2020-09-27 | 2020-09-27 | Cooling fan of medium-voltage frequency converter cabinet and adjusting device of air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212935801U (en) |
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2020
- 2020-09-27 CN CN202022157728.9U patent/CN212935801U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Room 217-7, 1158 Xiehe Road, Changning District, Shanghai 200335 Patentee after: Guoneng Longyuan Lantian Energy Saving Technology Co.,Ltd. Shanghai Branch Address before: Room 217-7, 1158 Xiehe Road, Changning District, Shanghai 200335 Patentee before: Guodian Longyuan Energy Saving Technology Co.,Ltd. Shanghai Branch |
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| CP01 | Change in the name or title of a patent holder |