CN210226087U - Air cooling system of high-voltage frequency converter - Google Patents
Air cooling system of high-voltage frequency converter Download PDFInfo
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- CN210226087U CN210226087U CN201921145303.7U CN201921145303U CN210226087U CN 210226087 U CN210226087 U CN 210226087U CN 201921145303 U CN201921145303 U CN 201921145303U CN 210226087 U CN210226087 U CN 210226087U
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Abstract
The utility model discloses a high-voltage inverter air cooling system relates to high-voltage inverter technical field. The utility model comprises a high-voltage frequency conversion chamber, an electric control module, a static pressure box air channel, a booster fan and a cooling device which are communicated in sequence; the cooling equipment is provided with an air outlet communicated with the interior of the high-voltage frequency conversion chamber; one end of the static pressure box air duct is communicated with an air outlet of the cooling fan, and the other end of the static pressure box air duct is communicated with an air inlet of the booster fan; the static pressure box air duct is provided with an emergency air outlet communicated with the outside of the high-pressure frequency conversion chamber, and the emergency air outlet is provided with an electric valve; the high-voltage frequency conversion chamber is provided with an emergency air inlet; and the electric control module controls the opening and closing of the electric valve according to the running states of the booster fan and the cooling equipment. The utility model discloses can open the motorised valve of emergent air vent department automatically when cooling arrangement or booster fan trouble, make high-temperature gas flow from emergent air vent department, prevent that the indoor high temperature of high-pressure frequency conversion is too high, avoid producing the secondary damage to high-pressure frequency converter.
Description
Technical Field
The utility model relates to a high-voltage inverter technical field, concretely relates to high-voltage inverter air cooling system.
Background
The frequency converter is an electric energy control device which converts a power frequency power supply into another frequency by utilizing the on-off action of a power semiconductor device. With the rapid development of modern power electronic technology and microelectronic technology, high-voltage high-power variable-frequency speed regulation devices are continuously mature, and the high-voltage problem which is difficult to solve originally is solved well in recent years by device series connection or unit series connection.
High-voltage inverter generally installs in the high-voltage inverter, high-voltage inverter can produce high temperature at the operation in-process, these heats mainly spill through the radiator fan at high-voltage inverter top, consequently can have a large amount of high-temperature gas in high-voltage inverter's radiator fan exit, these high-temperature gas can make the indoor temperature of high-voltage inverter rise, need carry out timely cooling to the high-voltage inverter in, otherwise the phenomenon that high temperature burns out high-voltage inverter will appear.
Therefore, in the prior art, the high-voltage inverter generally needs to be matched with a set of air cooling system for use, and the air cooling system is used for reducing the temperature in the high-voltage inverter room. Air cooling system among the prior art is including air intake, wind channel, booster fan, cooling device and the air outlet that communicates in proper order, and the high-temperature gas that radiator fan flows out gets into the wind channel from air intake department, then gets into cooling device through booster fan, flows out from air outlet department after cooling in cooling device to this reduces the indoor temperature of high-pressure frequency conversion.
The air cooling system is also provided with an emergency air outlet for timely exhausting air when the cooling equipment or the booster fan fails, so that the temperature in the high-voltage frequency conversion chamber is prevented from being too high. But emergent air exit among the prior art needs the people to open, can't open emergent air exit automatically when breaking down. And the height that sets up of emergent air exit is 2 ~ 3 meters generally, and maintenance personal can't in time open, leads to the temperature in the high-voltage frequency conversion room to rise sharply, causes secondary damage to high-voltage inverter. On the other hand, after artificially opening emergent air exit, outside muddy air passes through door and window and gets into in the high-voltage inverter, and because high-voltage inverter is higher to the quality requirement of air, muddy air also can cause the secondary damage to high-voltage inverter.
In summary, the cooling system of the existing high-voltage frequency converter has no corresponding emergency system when the equipment fails, and is easy to cause secondary damage to the high-voltage frequency converter.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the utility model aims to provide a high-voltage inverter air cooling system. The utility model discloses can open the motorised valve of emergent air vent department automatically when cooling arrangement or booster fan trouble, make high-temperature gas flow from emergent air vent department, prevent that the indoor high temperature of high-pressure frequency conversion is too high, avoid producing the secondary damage to high-pressure frequency converter.
The air cooling system of the high-voltage frequency converter comprises a high-voltage frequency conversion chamber, an electric control module, a static pressure box air channel, a booster fan and cooling equipment which are sequentially communicated; the high-voltage frequency converter is arranged in the high-voltage frequency conversion chamber; the cooling equipment is used for cooling high-temperature gas generated by the high-voltage frequency converter; the cooling equipment is provided with an air outlet communicated with the interior of the high-voltage frequency conversion chamber; one end of the static pressure box air duct is communicated with an air outlet of the heat dissipation fan, and the other end of the static pressure box air duct is communicated with an air inlet of the booster fan; the static pressure box air duct is provided with an emergency air outlet communicated with the outside of the high-pressure frequency conversion chamber, and the emergency air outlet is provided with an electric valve; the high-voltage frequency conversion chamber is provided with an emergency air inlet communicated with the outside; and the electric control module controls the opening and closing of the electric valve according to the running states of the booster fan and the cooling equipment.
Preferably, the cooling system further comprises a warning lamp and a buzzer, and the electric control module controls the warning lamp and the buzzer to be started or stopped according to the running states of the booster fan and the cooling equipment.
Preferably, the emergency air inlet is provided with filter cotton.
Preferably, the emergency air outlet and the emergency air inlet are respectively arranged on two opposite sides of the high-voltage frequency conversion chamber.
High-voltage inverter air cooling system, its advantage lies in:
1. the static pressure box air duct is communicated with the heat dissipation fan, and high-temperature gas enters the static pressure box air duct. An emergency air outlet of the static pressure box air duct is communicated with the outside of the high-pressure frequency conversion chamber, and an electric valve is arranged at the emergency air outlet. When the cooling device and the booster fan normally work, the electric valve is closed, no gas flows at the emergency air outlet, and the gas is cooled by the cooling device and then is discharged from the air outlet. When the booster fan or the cooling equipment breaks down, the electric control module controls the electric valve to be opened, so that high-temperature gas flows to the outside of the high-pressure frequency conversion chamber from the emergency air outlet. At the moment, because the gas in the high-voltage frequency conversion chamber runs off, negative pressure is formed in the high-voltage frequency conversion chamber, so that relatively low-temperature air outside the high-voltage frequency conversion chamber flows in from the emergency air inlet, the temperature in the high-voltage frequency conversion chamber is reduced, and secondary damage to the high-voltage frequency converter due to high temperature is avoided. The utility model discloses an emergent air exit can be opened automatically when equipment trouble, effectively protects high-voltage inverter.
2. The warning lamp and the buzzer give out a prompt when the equipment fails to work, and workers are informed of timely maintenance.
3. The filter pulp can effectively filter the impurity of outside air, makes the air that emergent air inlet department flows in accord with the air requirement of high-voltage inverter, avoids turbid air to cause the harm to high-voltage inverter, guarantees the air cleanliness factor of high-voltage frequency conversion room.
4. The emergency air outlet and the emergency air inlet are arranged on two opposite sides of the high-voltage frequency conversion chamber. Convection is formed between the emergency air inlet and the emergency air outlet, so that the gas flowing speed is increased, and the cooling rate is increased.
Drawings
Fig. 1 is a schematic structural diagram of an air cooling system of a high-voltage inverter according to the present invention.
Description of reference numerals: 1-plenum box air duct, 11-emergency air outlet, 2-booster fan, 3-cooling equipment, 4-air outlet, 5-emergency air inlet, 6-electric valve, 7-filter cotton, 8-high voltage frequency converter and 81-heat dissipation fan.
Detailed Description
As shown in fig. 1, the air cooling system of the high-voltage inverter of the present invention comprises a high-voltage frequency conversion chamber, an electronic control module, and a static pressure box air duct 1, a booster fan 2 and a cooling device 3 which are sequentially connected; the high-voltage frequency converter 8 is arranged in the high-voltage frequency conversion chamber; the cooling device 3 is used for cooling high-temperature gas generated by the high-voltage frequency converter 8; the cooling equipment 3 is provided with an air outlet 4 communicated with the interior of the high-voltage frequency conversion chamber; one end of the static pressure box air duct 1 is communicated with an air outlet of the heat dissipation fan 81, and the other end of the static pressure box air duct is communicated with an air inlet of the booster fan 2; the static pressure box air duct 1 is provided with an emergency air outlet 11 communicated with the outside of the high-pressure frequency conversion chamber, and the emergency air outlet 11 is provided with an electric valve 6; the high-voltage frequency conversion chamber is provided with an emergency air inlet 5 communicated with the outside; the electric control module controls the electric valve 6 to open and close according to the running states of the booster fan 2 and the cooling device 3. The operation state refers to normal operation or failure of the booster fan 2 and the cooling device 3. The operation state can be reflected by various parameters, for example, the main circuit current of the booster fan 2 or the rotating speed of the fan blades can reflect the operation state of the booster fan 2. The main circuit current of the cooling device 3 or the temperature at the air outlet 4 thereof can reflect the operation state of the cooling device 3.
In this embodiment, the electric valve 6 is composed of an electric actuator for receiving electric control to change the opening and closing of the valve body by the electric control, and a valve body. The model of the electric actuating mechanism is as follows: ZAJ-3.
The electric control module selects a common electric control cabinet which is a common electric control component and has the functions of switching on or switching off a circuit by a manual or automatic switch in normal operation and switching off the circuit or alarming by a protective electric appliance in fault or abnormal operation.
The main components of the electric control cabinet comprise a circuit breaker, a contactor and a thermal relay, and the electric control cabinet mainly realizes a control function through the on-off of the components. In this embodiment, the type of the circuit breaker is: schneider IC 65N/3P/D20A/3P; the type of the contactor is as follows: schneider LC1-D18M 7C; the type of the thermal relay is as follows: schneider LRD16C (9-13A). The electric control cabinet controls the opening and closing of the electric valve 6 through the above components and other electric elements.
In the present embodiment, the operating state of the booster fan 2 is detected by providing the first sensor at the booster fan 2, and the operating state of the cooling apparatus 3 is detected by providing the second sensor at the cooling apparatus 3.
The first sensor detects the running state of the booster fan 2, generates a first signal according to the running state of the booster fan 2 and sends the first signal to the electric control module;
the second sensor detects the running state of the cooling device 3, and generates a second signal according to the running state of the cooling device 3 and sends the second signal to the electronic control module.
The first signal and the second signal are both electric signals which can be recognized by the electric control module.
The electric control module controls the electric valve 6 to open and close according to the received first signal and the second signal.
In this embodiment, the first inductor and the second inductor may both be current sensors, an induction end of the first inductor is connected to the main circuit of the booster fan 2, and the first inductor detects a working current in the main circuit of the booster fan 2 and generates a first signal according to a detection result. The range of a current value can be set in the electronic control module according to the normal working current of the selected booster fan 2, and when the current value detected by the first sensor is within the range, the electronic control module judges that the booster fan is in a normal running state. When the current value detected by the first sensor is not in the range, the current in the main circuit of the booster fan 2 is abnormal, and at the moment, the electric control module judges that the booster fan 2 has a fault and sends an opening signal to the electric valve 6 to open the electric valve 6.
The working principle of the second inductor is the same as that of the first inductor, and the second inductor is connected into the main circuit of the cooling device 3 to detect the working current of the main circuit of the cooling device 3. When the main circuit current of the cooling equipment 3 is abnormal, the electric control module judges that the cooling equipment 3 has a fault and sends an opening signal to the electric valve 6 to open the electric valve 6.
The first inductor can also be used as a rotating speed sensor, the first inductor is arranged on one side of the fan blades of the booster fan 2 and used for detecting the rotating speed of the booster fan 2, and the detected rotating speed is converted into an electric signal which can be identified by the electric control module and is sent to the electric control module. The normal rotating speed range of the booster fan 2 is preset in the electronic control module, and when the detected rotating speed is within the range, the electronic control module judges that the booster fan 2 is in a normal running state. When the detected rotating speed is not in the range, if the detected rotating speed is zero when the booster fan 2 stops rotating, the electric control module judges that the booster fan 2 has a fault and sends a control signal to open the electric valve 6.
The second inductor can select a temperature sensor for use, and the temperature sensor is arranged at the air outlet 4 of the cooling device 3 to detect the temperature of the air flowing at the air outlet 4. A temperature range is set in the electronic control module according to the cooled gas temperature. The temperature sensor detects the gas temperature at the tuyere 4 and converts the gas temperature into an electric signal which can be recognized by the electronic control module. The electric signal is transmitted to the electric control module, and the electric control module judges whether the cooling device 3 realizes a normal cooling function according to the signal. When the detected temperature is within the preset temperature range, the electric control module judges that the cooling equipment 3 normally operates, and the normal cooling function is realized. When the detected temperature is obviously higher than the preset temperature range, if the detected temperature is close to the temperature of the gas sent by the high-voltage frequency converter, the electric control module judges that the cooling equipment 3 has a fault, and the normal cooling function cannot be realized. The electric control module controls the electric valve 6 to open.
In this embodiment, the main circuit current or the fan blade rotating speed of the booster fan 2 is detected, an electric signal is generated and sent to the electric control module, and the electric control module judges the running state of the booster fan according to the received electric signal, that is, the booster fan runs normally or has a fault. And then the opening and closing of the electric valve are controlled according to the running state of the booster fan 2.
The main circuit current of the cooling equipment 3 or the gas temperature at the air outlet 4 is detected, an electric signal is generated and sent to the electric control module, the electric control module judges the running state of the cooling equipment 3 according to the received electric signal, namely, the normal running or the fault exists, and then the opening and closing of the electric valve are controlled according to the running state of the cooling equipment 3.
The static pressure box air duct 1 is communicated with the heat dissipation fan 81, and high-temperature gas enters the static pressure box air duct 1. An emergency air outlet 11 of the static pressure box air duct 1 is communicated with the outside of the high-pressure frequency conversion chamber, and an electric valve 6 is arranged at the emergency air outlet 11. When the cooling device 3 and the booster fan 2 normally work, the electric valve 6 is closed, no gas flows through the emergency exhaust port 11, and the gas is cooled by the cooling device 3 and then is exhausted from the air outlet 4. When the cooling device 3 or the booster fan 2 breaks down, the electric control module sends a stop signal to the cooling device 3 and the booster fan 2 to stop working. Meanwhile, a corresponding control signal is sent to the electric valve 6, so that the electric valve 6 is opened, and high-temperature gas flows to the outside of the high-pressure frequency conversion chamber from the emergency exhaust port 11. At this moment, because the gas in the high-voltage frequency conversion chamber runs off, negative pressure is formed in the high-voltage frequency conversion chamber, so that relatively low-temperature air outside the high-voltage frequency conversion chamber flows in from the emergency air inlet 5, the temperature in the high-voltage frequency conversion chamber is reduced, and secondary damage to the high-voltage frequency converter 8 caused by high temperature is avoided. The utility model discloses an emergent air exit 11 can open automatically when equipment trouble, effectively protects high-voltage inverter 8.
The high-voltage inverter cooling system further comprises a warning lamp and a buzzer, and the signal output end of the electric control module is in signal connection with the signal input ends of the warning lamp and the buzzer respectively. The warning lamp and the buzzer give out a prompt when the equipment fails to work, and workers are informed of timely maintenance.
The cooling device 3 can be a water cooling device or an air cooling device, and is selected according to actual requirements. The electric valve 6 is a commonly used industrial controllable valve element, and the opening and closing of the valve can be controlled by electric signals. The electric control module can be further connected with a signal of a communication module, the communication module is in communication connection with a remote monitoring system, when the electric control module judges that the booster fan 2 or the cooling device 3 has faults, a corresponding signal is output to the communication module, the communication module sends a maintenance request signal to the monitoring system, and the remote monitoring personnel is prompted that the high-voltage frequency conversion chamber has faults so that the maintenance personnel can timely handle the faults.
The emergency air inlet 5 is provided with filter cotton 7. The filter pulp 7 can effectively filter the impurities of the outside air, so that the air flowing into the emergency air inlet 5 meets the air requirement of the high-voltage frequency converter 8, the turbid air is prevented from damaging the high-voltage frequency converter, and the air cleanliness of the high-voltage frequency conversion chamber is ensured.
The emergency air outlet 11 and the emergency air inlet 5 are arranged on two opposite sides of the high-voltage frequency conversion chamber. Convection is formed between the emergency air inlet 5 and the emergency air outlet 11, so that the gas flowing speed is increased, and the cooling rate is increased.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.
Claims (4)
1. The air cooling system of the high-voltage frequency converter is characterized in that a heat radiation fan (81) is arranged at the top of the high-voltage frequency converter (8); the air cooling system of the high-voltage frequency converter is characterized by comprising a high-voltage frequency conversion chamber, an electric control module, and a static pressure box air duct (1), a booster fan (2) and a cooling device (3) which are sequentially communicated; the high-voltage frequency converter (8) is arranged in the high-voltage frequency conversion chamber; the cooling device (3) is used for cooling high-temperature gas generated by the high-voltage frequency converter (8); the cooling equipment (3) is provided with an air outlet (4) communicated with the interior of the high-voltage frequency conversion chamber; one end of the static pressure box air duct (1) is communicated with an air outlet of the heat dissipation fan (81), and the other end of the static pressure box air duct is communicated with an air inlet of the booster fan (2); the static pressure box air duct (1) is provided with an emergency air outlet (11) communicated with the outside of the high-pressure frequency conversion chamber, and an electric valve (6) is arranged at the emergency air outlet (11); the high-voltage frequency conversion chamber is provided with an emergency air inlet (5) communicated with the outside; and the electric control module controls the opening and closing of the electric valve (6) according to the running states of the booster fan (2) and the cooling equipment (3).
2. The air cooling system of the high-voltage frequency converter according to claim 1, further comprising a warning light and a buzzer, wherein the electronic control module controls the warning light and the buzzer to be turned on or off according to the operation states of the booster fan (2) and the cooling device (3).
3. The air cooling system of the high-voltage frequency converter according to claim 1, wherein a filter cotton (7) is disposed at the emergency air inlet (5).
4. The air cooling system of the high-voltage inverter of claim 1, wherein the emergency air outlet (11) and the emergency air inlet (5) are respectively disposed at two opposite sides of the high-voltage inverter chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921145303.7U CN210226087U (en) | 2019-07-18 | 2019-07-18 | Air cooling system of high-voltage frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921145303.7U CN210226087U (en) | 2019-07-18 | 2019-07-18 | Air cooling system of high-voltage frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210226087U true CN210226087U (en) | 2020-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921145303.7U Active CN210226087U (en) | 2019-07-18 | 2019-07-18 | Air cooling system of high-voltage frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210226087U (en) |
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2019
- 2019-07-18 CN CN201921145303.7U patent/CN210226087U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 511300 building g-1, No. 82, Xinsha Avenue North, Xintang Town, Zengcheng District, Guangzhou City, Guangdong Province Patentee after: Guangzhou Senke Energy Saving Technology Co.,Ltd. Address before: 511300 building g-1, No. 82, Xinsha Avenue North, Xintang Town, Zengcheng District, Guangzhou City, Guangdong Province Patentee before: Guangzhou Senke Energy Saving Technology Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: High voltage inverter air cooling system Effective date of registration: 20220624 Granted publication date: 20200331 Pledgee: Bank of China Limited by Share Ltd. Guangzhou Zengcheng branch Pledgor: Guangzhou Senke Energy Saving Technology Co.,Ltd. Registration number: Y2022440000123 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |