CN214123658U - Cold-regulated dry-type transformer - Google Patents
Cold-regulated dry-type transformer Download PDFInfo
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- CN214123658U CN214123658U CN202120340771.0U CN202120340771U CN214123658U CN 214123658 U CN214123658 U CN 214123658U CN 202120340771 U CN202120340771 U CN 202120340771U CN 214123658 U CN214123658 U CN 214123658U
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Abstract
The utility model relates to a cold regulation dry-type transformer relates to cooling device technical field, has improved and has failed to carry out the refrigerated problem of effectively cooling down to dry-type transformer body, and wherein, cold regulation dry-type transformer, including fan, dry-type transformer body, the fan is located the edge of dry-type transformer body, be provided with thermistor RT on the dry-type transformer body, thermistor RT's one end ground connection, thermistor RT keeps away from the one end electric connection of ground connection and has test resistor R1, test resistor R1 keeps away from the one end electric connection of thermistor RT and has the power VCC, test resistor R1 has first voltage comparator with thermistor RT's junction electric connection, first voltage comparator's output electric connection has the drive circuit of driving fan work. A cold regulation dry-type transformer in this application has the effect of effectively cooling down the dry-type transformer body.
Description
Technical Field
The present application relates to the field of cooling devices, and more particularly, to a cold regulated dry transformer.
Background
Dry-type transformers are widely used in local lighting, high-rise buildings, airports and other places, and simply speaking, a dry-type transformer body refers to a transformer in which an iron core and a winding are not immersed in insulating oil. The cooling method is divided into natural air cooling and forced air cooling. During natural air cooling, the transformer can continuously operate for a long time under the rated capacity. When forced air cooling is carried out, the output capacity of the transformer can be improved by 50 percent. The device is suitable for intermittent overload operation or emergency accident overload operation; because the load loss and the impedance voltage amplification are large during overload and the device is in a non-economic operation state, the device is not required to be in continuous overload operation for a long time.
The utility model discloses a cooling device for dry-type transformer body is disclosed in chinese utility model patent with bulletin number CN208061804U, this a cooling device for dry-type transformer body simple structure, switch on external power supply, the motor drives first band pulley and rotates, make second band pulley and third band pulley rotate simultaneously, the second band pulley drives the flabellum and rotates and carry out air-cooled cooling to heat-conducting plate and dry-type transformer body, third band pulley rotates and makes the worm rotate simultaneously, drive plectrum and worm wheel rotation, and under the effect of spring, control about the L shape connecting rod, make the piston control, drive the liquid flow in the L shape pneumatic cylinder once more, simultaneously because the flabellum passes through dabber and L shape pneumatic cylinder through connections, the liquid of L shape pneumatic cylinder flows to the flabellum in the effect of hydraulic pressure, carry out water-cooling to the flabellum, the flabellum after water-cooled cooling can make the air that blows into the shell can play better cooling effect to heat-conducting plate and dry-type transformer body .
With respect to the related art among the above, the inventors consider that the following drawbacks exist: the cooling device cannot automatically cool the dry-type transformer body according to the temperature inside the dry-type transformer body, and therefore, a technical solution is needed to improve the above technical problems.
SUMMERY OF THE UTILITY MODEL
In order to improve the problem that dry-type transformer body can't cool down, this application provides a cold regulation dry-type transformer.
The application provides a cold regulation dry-type transformer adopts following technical scheme:
the utility model provides a cold regulation dry-type transformer, includes fan, dry-type transformer body, the fan is located the edge of dry-type transformer body, be provided with thermistor RT on the dry-type transformer body, thermistor RT's one end ground connection, thermistor RT keeps away from the one end electric connection of ground connection and has test resistor R1, the one end electric connection that thermistor RT was kept away from to test resistor R1 has the power VCC, test resistor R1 has first voltage comparator with thermistor RT's junction electric connection, first voltage comparator's output electric connection has the drive circuit who drives fan work.
By adopting the technical scheme, when the temperature in the dry-type transformer body rises, the resistance value of the thermistor RT increases along with the rise of the temperature of the dry-type transformer body, the voltage value of the joint of the thermistor RT and the test resistor R1 is increased, the voltage value of the joint of the thermistor RT and the test resistor R1 is compared with the voltage value set by the first voltage comparator, and when the voltage value of the joint of the thermistor RT and the test resistor R1 is greater than the voltage value set by the first voltage comparator, the driving circuit is operated, the driving circuit drives the fan to start working, and the dry-type transformer body is cooled.
Preferably, the junction of the test resistor R1 and the thermistor RT is electrically connected to an inverting amplifier, the output end of the inverting amplifier is electrically connected to an inverter, and the inverter is electrically connected to the first voltage comparator.
By adopting the technical scheme, the voltage at the joint of the thermistor RT and the test resistor R1 is reversely amplified through the inverting amplifier and then is reversed through the inverter, so that the voltage value at the joint of the amplified thermistor RT and the test resistor R1 is compared with the voltage value set by the first voltage comparator, when the voltage value at the joint of the amplified thermistor RT and the test resistor R1 is greater than the voltage value set by the first voltage comparator, the driving circuit is operated, and then the driving circuit drives the fan to start working, so that the dry-type transformer body is cooled.
Preferably, the connection part of the first voltage comparator and the driving circuit is electrically connected with an alarm signal lamp.
Through adopting above-mentioned technical scheme, when the magnitude of voltage of thermistor RT and test resistance R1 junction was greater than the magnitude of voltage that first voltage comparator set for, voltage will be output to first voltage comparator's output, and the alarm signal lamp of first voltage comparator and drive circuit junction electric connection will be electrified and light this moment, is favorable to reminding this internal high temperature of staff dry-type transformer, needs to arouse attention.
Preferably, a second voltage comparator is electrically connected to a joint of the first voltage comparator and the driving circuit, and the second voltage comparator is electrically connected to the alarm signal lamp.
Through adopting above-mentioned technical scheme, when first voltage comparator output voltage, first voltage comparator's output voltage will compare with the voltage value that the second voltage comparator set for, when first voltage comparator's output voltage is greater than the voltage value that the second voltage comparator set for, second voltage comparator's output will output voltage, at this moment, the alarm signal lamp with second voltage comparator output point electric connection will light, this shows that this internal temperature of dry-type transformer is still very high after working for a period of time, be favorable to reminding the staff to arouse high importance.
Preferably, a connection part of the first voltage comparator and the driving circuit is electrically connected with a time delay, and the time delay is electrically connected with the second voltage comparator.
By adopting the technical scheme, when the first voltage comparator outputs voltage, the delayer electrically connected with the connection part of the first voltage comparator and the driving circuit works, when the time set by the delayer is reached, the first voltage comparator continues to output voltage, the output voltage of the first voltage comparator is compared with the voltage value set by the second voltage comparator, when the output voltage of the first voltage comparator is greater than the voltage value set by the second voltage comparator, the alarm signal lamp electrically connected with the output end of the second voltage comparator is turned on, at the moment, the fan is in fault, the temperature in the dry-type transformer body is delayed and not reduced, and a worker needs to perform power-off maintenance on the fan, so that safety accidents caused by overhigh temperature in the dry-type transformer body are avoided.
Preferably, a joint of the test resistor R1 and the thermistor RT is electrically connected with a non-inverting amplifier, and the non-inverting amplifier is electrically connected with the first voltage comparator.
By adopting the technical scheme, the voltage at the joint of the test resistor R1 and the thermistor RT is amplified through the in-phase amplifier and is compared with the voltage value set by the first voltage comparator, and when the voltage at the joint of the test resistor R1 and the thermistor RT is greater than the voltage value set by the first voltage comparator, the driving circuit drives the fan to work, so that the temperature in the dry-type transformer body is cooled.
Preferably, the fan is provided with an air deflector in a rotating manner.
By adopting the technical scheme, when the dry-type transformer body is cooled by the fan, the wind guide plate on the fan can collect the wind blown out by the fan and blow the wind to the place with higher temperature in the dry-type transformer body, so that the dry-type transformer body is cooled in a centralized manner.
Preferably, a filter screen is arranged on the fan.
Through adopting above-mentioned technical scheme, the filter screen can filter the wind that the fan blew out, is favorable to avoiding blowing dirt impurity in the wind to blow to the dry-type transformer body and lead to the dry-type transformer body to break down, protects the dry-type transformer body.
In summary, the present application includes at least one of the following beneficial technical effects:
when the temperature in the dry-type transformer body rises, the resistance value of the thermistor RT increases along with the rise of the temperature of the dry-type transformer body, the voltage value of the connection part of the thermistor RT and the test resistor R1 is increased, the voltage value of the connection part of the thermistor RT and the test resistor R1 is compared with the voltage value set by the first voltage comparator, and when the voltage value of the connection part of the thermistor RT and the test resistor R1 is greater than the voltage value set by the first voltage comparator, the driving circuit is operated, the driving circuit drives the fan to start working, and the dry-type transformer body is cooled;
when the first voltage comparator outputs voltage, the delayer electrically connected with the connection part of the first voltage comparator and the driving circuit works, when the time set by the delayer is reached, the first voltage comparator continues to output voltage, the output voltage of the first voltage comparator is compared with the voltage value set by the second voltage comparator, when the output voltage of the first voltage comparator is greater than the voltage value set by the second voltage comparator, an alarm signal lamp electrically connected with the output end of the second voltage comparator is lightened, the fan is indicated to have a fault, the temperature in the dry-type transformer body is not reduced later, a worker needs to power off the fan, and the safety accident caused by overhigh temperature in the dry-type transformer body is avoided;
when the dry-type transformer body is cooled by the fan, the wind guide plate on the fan can collect the wind blown out by the fan and blow the wind to a place with higher temperature in the dry-type transformer body, so that the dry-type transformer body is cooled in a centralized manner, and the wind blown out by the fan can be filtered by the filter screen, so that the dry-type transformer body is prevented from being broken down due to the fact that dust-blowing impurities in the wind blow the dry-type transformer body, and the dry-type transformer body is protected.
Drawings
Fig. 1 is a schematic diagram of a cold regulated dry-type transformer of an embodiment of the present application;
fig. 2 is a schematic cross-sectional view of a cold regulated dry-type transformer according to an embodiment of the present application;
FIG. 3 is a schematic circuit diagram of a cold regulated dry-type transformer according to an embodiment of the present application;
fig. 4 is a schematic circuit diagram of a cold regulated dry-type transformer according to an embodiment of the present application.
Description of reference numerals: 1. a fan; 2. a dry-type transformer body; 3. an inverting amplifier; 4. an inverter; 5. a first voltage comparator; 6. a time delay; 7. a second voltage comparator; 8. an alarm signal lamp; 9. a drive circuit; 10. a non-inverting amplifier; 11. an air deflector; 12. and (4) a filter screen.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses a cold-regulated dry-type transformer. Referring to fig. 1, the cold regulation dry-type transformer includes a rectangular fan 1 and a cylindrical dry-type transformer body 2, wherein the fan 1 is located at an edge of the dry-type transformer body 2.
Referring to fig. 3, a thermistor RT is arranged on the dry-type transformer body 2, one end of the thermistor RT is grounded, one end of the thermistor RT, which is far away from the ground, is electrically connected with a test resistor R1, one end of the test resistor R1, which is far away from the thermistor RT, is electrically connected with a power VCC, a connection part of the test resistor R1 and the thermistor RT is electrically connected with a first voltage comparator 5, and an output end of the first voltage comparator 5 is electrically connected with a driving circuit 9 for driving the fan 1 to work. The resistance value of the thermistor RT increases with the rise of the temperature in the dry-type transformer body 2, and then the voltage value at the connection of the test resistor R1 and the thermistor RT also increases, and when the voltage value at the connection of the test resistor R1 and the thermistor RT is greater than the voltage value set by the first voltage comparator 5, the output end of the first voltage comparator 5 will output voltage, and then the driving circuit 9 will drive the fan 1 to work, and then cool down in the dry-type transformer body 2.
The junction of the test resistor R1 and the thermistor RT is electrically connected with an inverting amplifier 3, the output end of the inverting amplifier 3 is electrically connected with an inverter 4, and the inverter 4 is electrically connected with a first voltage comparator 5. The voltage value of the junction of the test resistor R1 and the thermistor RT is amplified through the inverting amplifier 3, so that the voltage change is more obvious, and then the voltage value is reversed through the inverter 4 and then compared with the voltage value set by the first voltage comparator 5, so that the driving circuit 9 drives the fan 1 to work, and the dry-type transformer body 2 is cooled.
The connection part of the first voltage comparator 5 and the driving circuit 9 is electrically connected with an alarm signal lamp 8. When the first voltage comparator 5 outputs a voltage, the alarm signal lamp 8 will be turned on, which means that the temperature inside the dry-type transformer body 2 is high and needs to be noticed.
The junction of the first voltage comparator 5 and the driving circuit 9 is electrically connected with a second voltage comparator 7, and the second voltage comparator 7 is electrically connected with an alarm signal lamp 8. When the first transformer body outputs voltage, the output voltage is compared with the voltage value set by the second voltage comparator 7, and when the voltage output by the first voltage comparator 5 is greater than the voltage of the second voltage comparator 7, the alarm signal lamp 8 is turned on, which means that the temperature in the dry-type transformer body 2 does not drop after the fan 1 works for a period of time, and therefore high attention needs to be paid.
The connection between the first voltage comparator 5 and the driving circuit 9 is electrically connected to a delay unit 6, and the delay unit 6 is electrically connected to the second voltage comparator 7. When the first voltage comparator 5 outputs voltage, and the time of the first voltage comparator 5 outputting voltage is longer than the time set by the time delay device 6, the output voltage of the first voltage comparator 5 is compared with the voltage value set by the second voltage comparator 7, and when the output voltage of the first voltage comparator 5 is longer than the voltage value set by the second voltage comparator 7, the alarm signal lamp 8 will light up, which indicates that the fan 1 has a fault and needs to perform power-off maintenance on the fan 1.
Referring to fig. 4, the in-phase amplifier 10 is electrically connected to the junction of the test resistor R1 and the thermistor RT, and the in-phase amplifier 10 is electrically connected to the first voltage comparator 5. The voltage value of the connection part of the test resistor R1 and the thermistor RT is amplified in phase and compared with the voltage value set by the first voltage comparator 5, and then the driving circuit 9 drives the fan 1 to work to cool the dry-type transformer body 2.
Referring to fig. 2, the fan 1 is rotatably provided with a rectangular wind deflector 11, and the wind deflectors 11 are staggered at equal intervals. When the fan 1 is operated, the air deflector 11 guides the air blown out from the fan 1 to a place with a high temperature in the dry-type transformer body 2.
A net-shaped filter screen 12 is arranged on the fan 1. The filter screen 12 filters the air blown out by the fan 1, which is beneficial to preventing dust and impurities in the air blown out by the fan 1 from entering the dry-type transformer body 2 to cause the dry-type transformer body 2 to break down.
The implementation principle of the cold-regulated dry-type transformer in the embodiment of the application is as follows: when the temperature in the dry-type transformer body 2 rises, the fan 1 is operated by the operation of the circuit, and the wind deflector 11 intensively guides the wind blown out by the fan 1 to a place with a high temperature in the dry-type transformer body 2. When the first voltage comparator 5 outputs voltage, and the time of the first voltage comparator 5 outputting voltage is longer than the time set by the time delay device 6, the output voltage of the first voltage comparator 5 is compared with the voltage value set by the second voltage comparator 7, and when the output voltage of the first voltage comparator 5 is longer than the voltage value set by the second voltage comparator 7, the alarm signal lamp 8 will light up, which indicates that the fan 1 has a fault and needs to perform power-off maintenance on the fan 1.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a cold dry-type transformer of adjusting, includes fan (1), dry-type transformer body (2), fan (1) is located the edge of dry-type transformer body (2), its characterized in that: be provided with thermistor RT on dry-type transformer body (2), thermistor RT's one end ground connection, thermistor RT keeps away from the one end electric connection of ground connection and has test resistance R1, test resistance R1 keeps away from thermistor RT's one end electric connection and has the power VCC, test resistance R1 has first voltage comparator (5) with thermistor RT's junction electric connection, the output electric connection of first voltage comparator (5) has drive circuit (9) of driving fan (1) work.
2. A cold regulated dry-type transformer according to claim 1, wherein: the junction electric connection of test resistance R1 and thermistor RT has inverting amplifier (3), the output electric connection of inverting amplifier (3) has inverter (4), inverter (4) and first voltage comparator (5) electric connection.
3. A cold regulated dry-type transformer according to claim 2, wherein: and the joint of the first voltage comparator (5) and the driving circuit (9) is electrically connected with an alarm signal lamp (8).
4. A cold regulated dry transformer according to claim 3 wherein: the junction of the first voltage comparator (5) and the driving circuit (9) is electrically connected with a second voltage comparator (7), and the second voltage comparator (7) is electrically connected with the alarm signal lamp (8).
5. A cold regulated dry transformer according to claim 4 wherein: the connection part of the first voltage comparator (5) and the driving circuit (9) is electrically connected with a delayer (6), and the delayer (6) is electrically connected with the second voltage comparator (7).
6. A cold regulated dry-type transformer according to claim 1, wherein: the junction of the test resistor R1 and the thermistor RT is electrically connected with an in-phase amplifier (10), and the in-phase amplifier (10) is electrically connected with a first voltage comparator (5).
7. A cold regulated dry-type transformer according to claim 1, wherein: the fan (1) is rotatably provided with an air deflector (11).
8. A cold regulated dry-type transformer according to claim 1, wherein: a filter screen (12) is arranged on the fan (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120340771.0U CN214123658U (en) | 2021-02-05 | 2021-02-05 | Cold-regulated dry-type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120340771.0U CN214123658U (en) | 2021-02-05 | 2021-02-05 | Cold-regulated dry-type transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214123658U true CN214123658U (en) | 2021-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120340771.0U Active CN214123658U (en) | 2021-02-05 | 2021-02-05 | Cold-regulated dry-type transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214123658U (en) |
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2021
- 2021-02-05 CN CN202120340771.0U patent/CN214123658U/en active Active
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