CN211016668U - Power-up moisture removing device for main transformer high-voltage side coil of hydropower station - Google Patents
Power-up moisture removing device for main transformer high-voltage side coil of hydropower station Download PDFInfo
- Publication number
- CN211016668U CN211016668U CN201922498785.0U CN201922498785U CN211016668U CN 211016668 U CN211016668 U CN 211016668U CN 201922498785 U CN201922498785 U CN 201922498785U CN 211016668 U CN211016668 U CN 211016668U
- Authority
- CN
- China
- Prior art keywords
- temperature
- oil
- signal
- transformer body
- winding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Housings And Mounting Of Transformers (AREA)
Abstract
The utility model relates to a power-on moisture removal device of main transformer high-voltage side coil of power station, including the transformer body, this internal three winding of installing of transformer, this internal insulating oil that has of transformer, be equipped with the joint of being connected with the winding on the top of transformer body, still include current generator, be connected with the electric wire between the joint on current generator and the transformer ware body, current generator is used for providing the low frequency heavy current for this internal winding of transformer. Utilize the low frequency heavy current to heat this internal winding of transformer, the homoenergetic produces the heat everywhere of winding to can effectively get rid of the moist position that is in winding inside, and insulating oil can absorb the outside heat that gives off of winding, avoids the winding high temperature and the damage appears.
Description
Technical Field
The utility model belongs to the technical field of the transformer technique and specifically relates to a power-on moisture removal device of power station owner change high-pressure side coil is related to.
Background
Before the main transformer of the hydropower station is put into operation, an electrical connection preventive test needs to be carried out according to national regulation and specification.
When the main transformer is assembled with the internal winding in a factory, the winding is affected with damp, and the manufacturer cannot find and process the damp in time. This can result in excessive partial discharge when the wet winding is subjected to preventive testing for electrical cross-over, resulting in failed testing.
The damp position of the winding is positioned in the winding, the conventional means of hot oil circulation is adopted for processing initially, the insulating oil cannot contact the inside of the winding, the method has poor effect, after the high-voltage partial discharge test is carried out again, the test value still seriously exceeds the standard, and the problem is not effectively solved. The main transformer is in the unfavorable situation of oil drainage, disintegration, dismantling, transportation, factory return and repair.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, one of the purposes of the utility model is to provide a power-on moisture removal device of main high-voltage side coil of hydropower station, it has good moisture removal ability.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the utility model provides a power station owner becomes high-pressure side coil and adds power dehumidizer, includes the transformer body, this internal three winding of installing of transformer, this internal insulating oil that has of transformer, be equipped with the joint of being connected with the winding on the top of transformer body, still include current generator, be connected with the electric wire between the joint on current generator and the transformer ware body, current generator is used for providing the low frequency heavy current for this internal winding of transformer.
Through adopting above-mentioned technical scheme, utilize the low frequency heavy current to heat this internal winding of transformer, the homoenergetic produces the heat everywhere of winding to can effectively get rid of the moist position that is in the winding inside, and insulating oil can absorb the outside heat that gives off of winding, avoids the winding high temperature and the damage appears.
The present invention may be further configured in a preferred embodiment as: the transformer comprises a transformer body and is characterized in that an oil outlet and an oil filling port are formed in the transformer body, the transformer further comprises a vacuum oil filter, an oil conveying pipe is connected between the oil inlet end of the vacuum oil filter and the oil outlet of the transformer body, and an oil return pipe is connected between the oil outlet end of the vacuum oil filter and the oil filling port.
By adopting the technical scheme, after the winding is electrified and heated, the moisture in the winding is forced out of the winding and mixed into the insulating oil, and in order to reduce the influence on the subsequent work, the vacuum oil filter is used for pumping the insulating oil out, filtering the moisture and then injecting the filtered moisture back into the transformer body.
The present invention may be further configured in a preferred embodiment as: the current generator is provided with a first temperature monitoring device, and the first temperature monitoring device comprises a first temperature detection device, a first reference signal, a first temperature comparison device, a first control device and a first execution device;
the first temperature detection device is used for detecting the oil temperature in the oil delivery pipe and converting the oil temperature into a first detection signal, the first temperature reference device is used for providing a first reference signal corresponding to the maximum limit temperature of the insulating oil in the transformer body, the first temperature comparison device is coupled with the first temperature detection device to receive the first detection signal and output a first comparison signal, the first control device is coupled with the first temperature comparison device to receive the first comparison signal and output a corresponding first control signal, and the first execution device is coupled with the first control device to receive the first control signal and respond to the first control signal to send out a warning;
when the first detection signal is greater than the first reference signal, the first temperature comparison device outputs a high level signal to control the first control device to output the high level signal, and the first execution device sends out a warning to remind that the temperature in the transformer body is too high after receiving the high level signal.
Through adopting above-mentioned technical scheme, can in time make the staff know when this internal temperature of transformer surpasss maximum limiting temperature, make the staff in time adjust the device, avoid this internal winding of transformer to be in the state of high temperature for a long time, reduce the injury that the winding received.
The present invention may be further configured in a preferred embodiment as: the oil return pipe is provided with a temperature adjusting device, the temperature adjusting device is provided with a second temperature monitoring device, and the second temperature monitoring device controls the temperature adjusting device to heat or cool the insulating oil in the oil return pipe according to the oil temperature in the oil return pipe.
Through adopting above-mentioned technical scheme, the oil temperature of the insulating oil that flows back in this internal transformer should not be too high or low excessively, and too high oil temperature causes this internal temperature of transformer to exceed the limited range easily, and the low oil temperature can influence the effect of removing damp of winding again, consequently adjusts the temperature of the insulating oil of backward flow through the cooperation of second temperature monitoring device and temperature regulation device.
The present invention may be further configured in a preferred embodiment as: the temperature adjusting device comprises a fan and a heating pipe, the oil return pipe sequentially passes through the heating pipe and the fan, the heating pipe is sleeved on the circumferential outer side wall of the corresponding position of the oil return pipe, and the air outlet of the fan faces the circumferential outer side wall of the corresponding position of the oil return pipe.
By adopting the technical scheme, when the temperature of the returned oil is too high, the fan is started to blow the oil return pipe, the temperature of the surface of the oil return pipe is reduced, and the heat transfer from the insulating oil in the oil return pipe to the oil return pipe is accelerated; when the oil temperature of the backflow is too low, the heating pipe is started, and the oil return pipe is heated to transfer heat into the insulating oil.
The present invention may be further configured in a preferred embodiment as: the second temperature monitoring device comprises a second temperature detection device, a second reference signal, a second temperature comparison device, a second control device and a second execution device;
the second temperature detection device is used for detecting the oil temperature in the oil return pipe and converting the oil temperature into a second detection signal, the second temperature reference device is used for providing a second reference signal corresponding to the maximum limiting temperature of the insulating oil injected into the transformer body, the second temperature comparison device is coupled to the second temperature detection device and used for receiving the second detection signal and outputting a second comparison signal, the second control device is coupled to the second temperature comparison device and used for receiving the second comparison signal and outputting a corresponding second control signal, and the second execution device is coupled to the second control device and used for receiving the second control signal and responding to the second control signal to control the fan or the heating pipe to be started.
By adopting the technical scheme, the automatic control of the opening and closing of the fan and the heating pipe is realized, the response is quicker, the temperature control precision is higher, and the manual participation is not needed.
The present invention may be further configured in a preferred embodiment as: the first temperature detection device is installed on the oil outlet.
Through adopting above-mentioned technical scheme, there is inconvenience to the inside oil temperature detection of transformer body, consequently can only carry out temperature detection through the insulating oil to just flowing out, makes the oil temperature that first temperature-detecting device detected more closely the internal oil temperature of transformer, and the precision of detection is higher.
The present invention may be further configured in a preferred embodiment as: the second temperature detection device is installed on the oil filling opening.
Through adopting above-mentioned technical scheme, the insulating oil temperature that returns to this internal transformer can be measured more accurately to second temperature-detecting device, makes the mode that adjusts this internal temperature of transformer through the insulating oil of backward flow more accurate.
To sum up, the utility model discloses a following at least one useful technological effect:
1. the damp winding is heated by using current through arranging the current generator and the first temperature monitoring device, the temperature of the winding is monitored, and warning is carried out when the temperature is too high so as to protect the winding;
2. the vacuum oil filter is arranged to filter the insulating oil containing moisture, so that the influence on the winding in the subsequent working process is reduced;
3. through setting up temperature regulation apparatus and second temperature monitoring device, utilize the regulation to the backward flow oil temperature, come the inside temperature of indirect control transformer body, make the temperature of winding be in safe within range.
Drawings
FIG. 1 is a schematic view of the overall structure of the embodiment;
FIG. 2 is a circuit diagram of a first temperature monitoring device in an embodiment;
fig. 3 is a circuit diagram of a second temperature monitoring device in the embodiment.
In the figure, 1, a transformer body; 11. a joint; 12. an oil outlet; 13. an oil filling port; 2. a current generator; 3. a vacuum oil filter; 4. an oil delivery pipe; 5. an oil return pipe; 61. a first temperature detection device; 62. a first temperature reference device; 63. a first temperature comparison device; 64. a first control device; 65. a first executing device; 7. a temperature adjustment device; 71. heating a tube; 72. a fan; 81. a second temperature detection device; 82. a second temperature reference device; 83. a second temperature comparison device; 84. a second control device; 85. and a second executing device.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, for the utility model discloses a main high-pressure side coil of power station owner adds damp device, including transformer body 1, set up current generator 2, vacuum oil filter 3 and temperature regulation apparatus 7 outside transformer body 1. Install three winding in the transformer body 1, inject in the transformer body 1 and have insulating oil, what remove damp device to in this application promptly is oil-immersed formula three-phase transformer promptly. Be equipped with three groups on transformer body 1's the top and connect 11 with three winding connection respectively, still be equipped with oil-out 12 and oiling mouth 13 on transformer body 1, oil-out 12 is located on transformer body 1's the lateral wall and is close to transformer body 1's bottom, and oiling mouth 13 is located transformer body 1's top and keeps away from oil-out 12, all installs the valve in oil-out 12 and the oiling mouth 13.
Referring to fig. 1, the vacuum oil filter 3 has an oil inlet end and an oil outlet end, an oil delivery pipe 4 is connected between the oil inlet end of the vacuum oil filter 3 and an oil outlet 12 of the transformer body 1, and an oil return pipe 5 is connected between the oil outlet end of the vacuum oil filter 3 and an oil injection port 13. Defeated oil pipe 4 is wrapped up the heat preservation cotton and is lost in order to reduce the heat of the insulating oil of defeated oil pipe 4 of flowing through, returns oil pipe 5 and is the metal pipe that has good heat conductivility, and vacuum oil filter 3 is close to transformer body 1's oiling mouth 13, makes the whole length of returning oil pipe 5 shorter relatively, and the temperature of the insulating oil of the oil pipe 5 of returning of flowing through is easily influenced by ambient temperature.
Referring to fig. 1, a thermostat 7 is located on the return pipe 5, the thermostat 7 being used to influence the temperature of the insulating oil in the return pipe 5 via the return pipe 5. The temperature adjusting means 7 may be a heat exchanger that exchanges heat with the oil return pipe 5 by passing cold water or hot water therethrough, or the temperature adjusting means 7 may be an air compressor that absorbs or releases heat by changing air pressure of air. And temperature regulation apparatus 7 comprises fan 72 and heating pipe 71 in this application, and heating pipe 71 overlaps on the circumference lateral wall of partly oil return pipe 5, and fan 72's air outlet is towards the circumference lateral wall of another part oil return pipe 5, and heating pipe 71 is closer to oiling mouth 13 than fan 72.
After the winding needing to be dehumidified is judged through a high-voltage partial discharge test, a current output interface of the current generator 2 is connected to the corresponding connector 11 through an electric wire. The current generator 2 provides a high current at a low frequency to the defective winding in the transformer body 1. The defective winding is continuously heated to remove internal moisture. Meanwhile, the vacuum oil filter 3 is operated by opening valves of the oil filling port 13 and the oil outlet 12, insulating oil is circulated, moisture and impurities are filtered, and the temperature of the insulating oil flowing back into the transformer body 1 is controlled by the temperature adjusting device 7, so that the overall temperature in the transformer body 1 is influenced, and the temperature of a defective winding cannot exceed the rated temperature.
Referring to fig. 2, the current generator 2 is provided with a first temperature monitoring device, and the first temperature monitoring device includes a first temperature detecting device 61, a first reference signal, a first temperature comparing device 63, a first control device 64, and a first executing device 65; wherein the first temperature detection means 61 is mounted on the oil outlet 12.
The first temperature detecting device 61 is used for detecting the oil temperature in the oil pipeline 4 and converting the oil temperature into a first detection signal, the first temperature reference device 62 is used for providing a first reference signal corresponding to the maximum limit temperature of the insulating oil in the transformer body 1, the first temperature comparing device 63 is coupled to the first temperature detecting device 61 to receive the first detection signal and output a first comparison signal, the first control device 64 is coupled to the first temperature comparing device 63 to receive the first comparison signal and output a corresponding first control signal, and the first executing device 65 is coupled to the first control device 64 to receive the first control signal and respond to the first control signal to send an alarm.
Referring to fig. 2, the first temperature sensing device 61 includes a thermistor RT1 and a resistor R4. Thermistor RT1 is a negative temperature coefficient thermistor.
One end of the thermistor RT1 is coupled to the power VCC, the other end of the thermistor RT1 is coupled to one end of the resistor R4, and the other end of the resistor R4 is grounded.
When the thermistor RT1 is heated, the resistance of the thermistor RT1 becomes low, the voltage divided by the resistor R4 becomes high, and the first detection signal output from the connection point between the thermistor RT1 and the resistor R4 is a high-level signal; otherwise, the first detection signal is a low level signal.
Referring to FIG. 2, the first temperature reference device 62 includes a resistor R1, a resistor R2, and a resistor R3.
One end of the resistor R1 is coupled to the power VCC, the other end of the resistor R1 is coupled to one end of the resistor R3, the other end of the resistor R3 is coupled to the first temperature comparator 63, one end of the resistor R2 is coupled to a connection point between the resistor R1 and the resistor R3, and the other end of the resistor R2 is grounded.
The resistor R1 and the resistor R3 are connected in series to divide the voltage, and the first reference signal inputted to the first temperature comparator 63 is fixed by arranging the resistors R1 and R3 in a certain ratio, and the first reference signal is required to correspond to the maximum limit temperature of the insulating oil in the transformer body 1. Generally, the maximum temperature of the windings in the transformer body 1 may be between 60 ° and 75 °, and the actual temperature of the insulating oil in the transformer body 1 is slightly lower than the temperature of the windings, so that the temperature of the insulating oil in the transformer body 1 must not exceed 60 ° when performing the deliquescence.
Referring to fig. 2, the first temperature comparing device 63 is a comparator N1. and the comparator N1 is model L M311.
The inverting input terminal of the comparator N1 is coupled to the connection point between the thermistor RT1 and the resistor R4, the inverting input terminal of the comparator N1 is coupled to the end of the resistor R3 away from the resistor R1, and the output terminal of the comparator N1 is coupled to the first control device 64.
When the detection signal is greater than the reference signal, the comparator N1 outputs a high level signal; when the detection signal is smaller than the reference signal, the comparator N1 outputs a low level signal.
Referring to fig. 2, the first control device 64 is a transistor Q1, and the transistor Q1 is an NPN type transistor and has a model number of 2SC 4019.
The base of the transistor Q1 is coupled to the output terminal of the comparator N1, the collector of the transistor Q1 is coupled to the power source VCC through the first actuator 65, and the emitter of the transistor Q1 is grounded.
When the base of the transistor Q1 receives a high level signal, the transistor Q1 is turned on, and the first execution device 65 starts to work; conversely, the transistor Q1 is turned off, and the first actuator 65 does not operate.
Referring to fig. 2, the first actuator 65 is a bell HA.
One end of the electric bell HA is coupled to the collector of the transistor Q1, and the other end of the electric bell HA is coupled to the power source VCC.
When the triode Q1 is conducted, the electric bell HA is electrified and sounds to give out a warning; when the transistor Q1 loses power, the electric bell HA no longer sounds.
Referring to fig. 3, a second temperature monitoring device is arranged on the temperature adjusting device 7, and the second temperature monitoring device controls the temperature adjusting device 7 to heat or cool the insulating oil in the oil return pipe 5 according to the oil temperature in the oil return pipe 5. The second temperature monitoring device comprises a second temperature detection device 81, a second reference signal, a second temperature comparison device 83, a second control device 84 and a second execution device 85; the second temperature detecting means 81 is installed on the oil filling port 13 to improve the accuracy of detecting the temperature of the insulating oil that flows back into the transformer body 1.
The second temperature detecting device 81 is configured to detect an oil temperature in the oil return pipe 5 and convert the oil temperature into a second detection signal, the second temperature reference device 82 is configured to provide a second reference signal corresponding to a maximum limiting temperature of the insulating oil injected into the transformer body 1, the second temperature comparing device 83 is coupled to the second temperature detecting device 81 to receive the second detection signal and output a second comparison signal, the second control device 84 is coupled to the second temperature comparing device 83 to receive the second comparison signal and output a corresponding second control signal, and the second executing device 85 is coupled to the second control device 84 to receive the second control signal and control the fan 72 or the heating pipe 71 to start in response to the second control signal.
Referring to fig. 3, the second temperature detection means 81 includes a thermistor RT2 and a resistor R7. Thermistor RT2 is a negative temperature coefficient thermistor.
One end of the thermistor RT2 is coupled to the power VCC, the other end of the thermistor RT2 is coupled to one end of the resistor R7, and the other end of the resistor R7 is grounded.
When the thermistor RT2 is heated, the resistance of the thermistor RT2 becomes low, the voltage divided by the resistor R7 becomes high, and the second detection signal output from the connection point between the thermistor RT2 and the resistor R7 is a high level signal; otherwise, the second detection signal is a low level signal.
Referring to fig. 3, the second temperature reference device 82 includes a slide rheostat RP1, a resistor R5, and a resistor R6.
One end of the sliding resistor RP1 is coupled to the power source VCC, the other end of the sliding resistor RP1 is coupled to one end of the resistor R6, the sliding end of the sliding resistor RP1 is coupled to the power source VCC, the other end of the resistor R6 is coupled to the second temperature comparator 83, one end of the resistor R5 is coupled to the connection point between the sliding resistor RP1 and the resistor R6, and the other end of the resistor R6 is grounded.
By changing the resistance value of the slide rheostat RP1 to the circuit, the second reference signal can be made to correspond to the temperature of the insulating oil that has flowed back into the transformer body 1. The overall temperature in the transformer body 1 is determined by controlling the temperature of the return oil in cooperation with the heating of the winding, so that the temperature in the transformer body 1 can be within an allowable temperature range. The temperature of the insulating oil which is returned into the transformer body 1 should be slightly lower than 60 °.
Referring to fig. 3, the second temperature comparison device 83 is a comparator N2-the comparator N2 is model L M322.
The inverting input terminal of the comparator N2 is coupled to the connection point between the thermistor RT2 and the resistor R7, the inverting input terminal of the comparator N2 is coupled to the end of the resistor R6 away from the resistor R5, and the output terminal of the comparator N2 is coupled to the second control device 84.
When the detection signal is greater than the reference signal, the comparator N2 outputs a high level signal; when the detection signal is smaller than the reference signal, the comparator N2 outputs a low level signal.
Referring to fig. 3, the second control device 84 is a transistor Q2, and the transistor Q2 is an NPN-type transistor and has a model number of 2SC 4029.
The base of the transistor Q2 is coupled to the output terminal of the comparator N2, the collector of the transistor Q2 is coupled to the power source VCC through the second actuator 85, and the emitter of the transistor Q2 is grounded.
When the base of the transistor Q2 receives a high level signal, the transistor Q2 is turned on, and the second execution device 85 starts to work; conversely, the transistor Q2 is turned off, and the second actuator 85 is not operated.
Referring to fig. 3, the second actuator 85 is an intermediate relay KM 1.
One end of the intermediate relay KM1 is coupled to the collector of the transistor Q2, and the other end of the intermediate relay KM1 is coupled to the power source VCC. The fixed end of the contact KM1-1 of the intermediate relay KM1 is coupled to the power source VCC, and the movable end of the contact KM1-1 of the intermediate relay KM1 is coupled to one end of the power supply port of the heating tube 71.
When the triode Q2 is conducted, the intermediate relay KM1 is electrified, and the movable end of the contact KM1-1 of the intermediate relay KM1 jumps to one end of the power supply port of the fan 72; when the triode Q2 is turned off, the intermediate relay KM1 loses power, and the movable end of the contact KM1-1 of the intermediate relay KM1 jumps to the power supply port of the heating pipe 71 again.
The implementation principle of the embodiment is as follows: after detecting the internally damped winding, the current generator 2 is connected to the corresponding terminal 11 and continuously supplies current. After heating for a certain time, the valves on the oil outlet 12 and the oil filling port 13 are opened, and the vacuum oil filter 3 and the temperature adjusting device 7 are started. The vacuum oil filter 3 extracts the insulating oil in the transformer body 1, filters the insulating oil by water qi and then injects the filtered insulating oil back into the transformer body 1. In the process, the operation of the fan 72 or the heating pipe 71 is determined according to the oil temperature of the insulating oil at the position of the returned oil filling port 13, and if the oil temperature at the position of the oil filling port 13 exceeds the preset temperature corresponding to the second reference signal, the fan 72 is started to dissipate heat through air cooling; otherwise, the heating pipe 71 is activated to increase the oil temperature. Therefore, the temperature of the returned insulating oil is in dynamic equilibrium, and the fan 72 and the heating pipe 71 will work alternately. If the electric bell HA continuously sounds, which indicates that the oil temperature in the transformer body 1 is too high, the resistance value of the slide rheostat RP1 connected to the circuit is increased to reduce the magnitude of the second reference signal, so that the oil temperature of the backflow is further reduced, the overall temperature in the transformer body 1 is reduced, and the damage of the winding due to the too high temperature is reduced.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a power station owner becomes high-pressure side coil and adds electric moisture removal device, includes transformer body (1), install three winding in transformer body (1), it has insulating oil to annotate in transformer body (1), be equipped with on the top of transformer body (1) and connect (11), its characterized in that with the winding connection: still include current generator (2), be connected with the electric wire between current generator (2) and the joint (11) on the transformer body, current generator (2) are used for providing low frequency heavy current for the winding in transformer body (1).
2. The power-on moisture removal device for the main transformer high-voltage side coil of the hydropower station according to claim 1, characterized in that: be equipped with oil-out (12) and oiling mouth (13) on transformer body (1), still include vacuum oil filter (3), be connected with defeated oil pipe (4) between oil feed end of vacuum oil filter (3) and oil-out (12) of transformer body (1), be connected with oil return pipe (5) between oil feed end of vacuum oil filter (3) and oiling mouth (13).
3. The device of claim 2, wherein the power-on moisture removal device comprises: the current generator (2) is provided with a first temperature monitoring device, and the first temperature monitoring device comprises a first temperature detection device (61), a first temperature reference device (62), a first temperature comparison device (63), a first control device (64) and a first execution device (65);
the first temperature detection device (61) is used for detecting the oil temperature in the oil delivery pipe (4) and converting the oil temperature into a first detection signal, the first temperature reference device (62) is used for providing a first reference signal corresponding to the maximum limit temperature of the insulating oil in the transformer body (1), the first temperature comparison device (63) is coupled to the first temperature detection device (61) to receive the first detection signal and output a first comparison signal, the first control device (64) is coupled to the first temperature comparison device (63) to receive the first comparison signal and output a corresponding first control signal, and the first execution device (65) is coupled to the first control device (64) to receive the first control signal and respond to the first control signal to send an alarm;
when the first detection signal is larger than the first reference signal, the first temperature comparison device (63) outputs a high level signal to control the first control device (64) to output the high level signal, and the first execution device (65) sends out a warning to remind that the temperature in the transformer body (1) is too high after receiving the high level signal.
4. The device of claim 2, wherein the power-on moisture removal device comprises: the oil return pipe (5) is provided with a temperature adjusting device (7), the temperature adjusting device (7) is provided with a second temperature monitoring device, and the second temperature monitoring device controls the temperature adjusting device (7) to heat or cool the insulating oil in the oil return pipe (5) according to the oil temperature in the oil return pipe (5).
5. The device of claim 4, wherein the power supply moisture removal device comprises: temperature regulation apparatus (7) include fan (72) and heating pipe (71), return oil pipe (5) and pass through heating pipe (71) and fan (72) in proper order, heating pipe (71) cover is on the circumference lateral wall that returns oil pipe (5) corresponding part, the air outlet of fan (72) is towards the circumference lateral wall that returns oil pipe (5) relevant position.
6. The device of claim 5, wherein the device comprises: the second temperature monitoring device comprises a second temperature detection device (81), a second temperature reference device (82), a second temperature comparison device (83), a second control device (84) and a second execution device (85);
the second temperature detection device (81) is used for detecting the oil temperature in the oil return pipe (5) and converting the oil temperature into a second detection signal, the second temperature reference device (82) is used for providing a second reference signal corresponding to the maximum limit temperature of the insulating oil injected into the transformer body (1), the second temperature comparison device (83) is coupled to the second temperature detection device (81) to receive the second detection signal and output a second comparison signal, the second control device (84) is coupled to the second temperature comparison device (83) to receive the second comparison signal and output a corresponding second control signal, and the second execution device (85) is coupled to the second control device (84) to receive the second control signal and respond to the second control signal to control the start of the fan (72) or the heating pipe (71).
7. The device of claim 3, wherein the power-on moisture removal device comprises: the first temperature detection device (61) is arranged on the oil outlet (12).
8. The device of claim 6, wherein the device comprises: the second temperature detection device (81) is mounted on the oil filling port (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922498785.0U CN211016668U (en) | 2019-12-31 | 2019-12-31 | Power-up moisture removing device for main transformer high-voltage side coil of hydropower station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922498785.0U CN211016668U (en) | 2019-12-31 | 2019-12-31 | Power-up moisture removing device for main transformer high-voltage side coil of hydropower station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211016668U true CN211016668U (en) | 2020-07-14 |
Family
ID=71506425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922498785.0U Active CN211016668U (en) | 2019-12-31 | 2019-12-31 | Power-up moisture removing device for main transformer high-voltage side coil of hydropower station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211016668U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114005661A (en) * | 2021-12-29 | 2022-02-01 | 深圳灏鹏科技有限公司 | Optical radiation-based self-maintenance power transformer and use method thereof |
-
2019
- 2019-12-31 CN CN201922498785.0U patent/CN211016668U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114005661A (en) * | 2021-12-29 | 2022-02-01 | 深圳灏鹏科技有限公司 | Optical radiation-based self-maintenance power transformer and use method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211016668U (en) | Power-up moisture removing device for main transformer high-voltage side coil of hydropower station | |
| CN109357442A (en) | Heat pump system and control method | |
| CN106871428A (en) | A kind of antifreeze boosting type gas heater | |
| JP2019520014A (en) | Method of protecting a motor of a device having a motor drive consumer with continuous capacity control system and selection of the motor | |
| KR101242756B1 (en) | Battery-protection apparatus and method using air-conditioning apparatus for electric vehicle | |
| CN116608657A (en) | Transformer drying device and method | |
| CN209246470U (en) | Heat pump system | |
| CN103362819B (en) | With the compressor of temperature protective device | |
| CN208826887U (en) | A kind of hydroelectric separation die heater | |
| CN105352110A (en) | Control method for electric auxiliary heater of air conditioner, controller and air conditioner | |
| CN205014550U (en) | Air conditioner | |
| CN214043354U (en) | Oil leakage prevention transformer | |
| CN206116147U (en) | Dry -type transformer with oneself protect function | |
| CN206755675U (en) | A kind of servicing unit of the low-temperature cooling water start of refrigeration host computer | |
| CN110890829A (en) | Internal circulation cooling system for traction converter and control method thereof | |
| CN201014649Y (en) | Outdoor machine of heat pump water heater of varied air-volume regulation evaporation load | |
| CN203375727U (en) | Water heater | |
| CN210861504U (en) | Air conditioning unit energy-saving system for cleaning factory building | |
| CN114924125A (en) | Insulation resistance testing device and insulation resistance testing method | |
| CN112460807A (en) | Control method of heating device, heating device and intelligent closestool | |
| CN209352752U (en) | Centrifugal drying integral system | |
| CN113944538A (en) | Engine test bed cooling system and engine test bed cooling method | |
| CN208782332U (en) | A kind of low voltage reactive power compensation cabinet | |
| CN220420531U (en) | Cooling system and silicon carbide high-temperature heat treatment equipment | |
| CN215870193U (en) | Water cooling machine based on process cooling water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |