CN211741904U - Transformer oil temperature detection tester - Google Patents
Transformer oil temperature detection tester Download PDFInfo
- Publication number
- CN211741904U CN211741904U CN202020689397.0U CN202020689397U CN211741904U CN 211741904 U CN211741904 U CN 211741904U CN 202020689397 U CN202020689397 U CN 202020689397U CN 211741904 U CN211741904 U CN 211741904U
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- transformer
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- oil tank
- transformer oil
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- Housings And Mounting Of Transformers (AREA)
Abstract
The utility model relates to a transformer oil temperature detection test appearance. The method is characterized in that: including PLC, this PLC respectively with display screen (5), keyboard (6), analog input module (3) and analog output module (4) are connected, still including experimental oil tank (2) that contain transformer oil, install temperature sensor (10) in this experimental oil tank (2), this temperature sensor (10) are connected with aforementioned PLC, still install electric heater unit (7) and air cooling device (8) respectively on this experimental oil tank (2), the control end of this electric heater unit (7) and air cooling device (8) is connected with aforementioned PLC respectively, and still install transformer temperature probe (9) that await measuring in this experimental oil tank (2). The utility model discloses can realize carrying out the check-up, carrying out the definite value check-up, debugging functions such as detecting and the automatic control system to ambient temperature to main air-cooled control system of transformer substation transformer oil temperature table.
Description
Technical Field
The utility model relates to a transformer oil temperature detection test appearance.
Background
In the debugging process of the transformer substation, the non-electric quantity debugging of the transformer is also an important debugging item, and the verification of an oil temperature gauge and the verification of a temperature signal of the transformer need to be subjected to a simulation test; the automatic control of the converter transformer air cooling system is to control the start and stop of the air cooling system according to the change of the oil temperature of the transformer, and in a debugging stage, a simulation test is required, and a simulation device is required to output the analog quantity required by the control system; the axial flow fans installed in places with important equipment such as a converter station valve hall, a transformer station high-voltage switch room and the like also need to be automatically controlled, and are automatically controlled according to detection data, and simulation tests need to be carried out in the debugging process.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a transformer oil temperature detection test appearance can check up transformer oil temperature table of transformer substation, carry out the definite value check-up, debug ambient temperature's detection and automatic control system to main transformer air-cooled control system.
A transformer oil temperature detection tester is characterized in that: including PLC, this PLC respectively with the display screen, the keyboard, analog input module and analog output module are connected, still including the experimental oil tank that contains transformer oil, the temperature sensor is installed to this experimental oil tank, this temperature sensor is connected with aforementioned PLC, still install electric heater unit and air cooling device respectively on this experimental oil tank, the control end of this electric heater unit and air cooling device is connected with aforementioned PLC respectively to still install the transformer temperature probe that awaits measuring in this experimental oil tank.
The resistance value output by the analog quantity output module is 100-150 omega, and the current value is 4-20 mA.
Wherein the electric heating device adopts an electric heating pipe, and the air cooling device adopts an electric fan.
Wherein the temperature sensor adopts a pt100 temperature sensor.
The utility model provides a transformer oil temperature detection test appearance of PLC control, through the proof on probation, can realize checking up transformer oil temperature table of transformer substation, carry out the definite value check-up to main transformer forced air cooling control system, to functions such as ambient temperature's detection and automatic control system debug, be a transformer oil temperature detection and testing device of convenient operation.
Drawings
Fig. 1 is a logic schematic block diagram of the present invention.
Detailed Description
As shown in fig. 1, the utility model provides a transformer oil temperature detection test appearance, including PLC, this PLC respectively with display screen 5, keyboard 6, analog input module 3 and analog output module 4 are connected, still including containing transformer oil's experimental oil tank 2, install pt100 temperature sensor 10 in this experimental oil tank 2, this temperature sensor 10 is connected with aforementioned PLC, still install electric heater unit 7 and air cooling device 8 on this experimental oil tank 2 respectively, this electric heater unit 7 adopts current conventional electric heating pipe, air cooling device 8 adopts current conventional electric fan. The control ends (i.e. on-off control circuit) of the electric heating device 7 and the air cooling device 8 are respectively connected with the PLC, and a temperature probe 9 of the transformer to be tested is also installed in the test oil tank 2.
The resistance value output by the analog output module 4 is 100-150 omega, and the current value is 4-20 mA.
The analog input module 3 and the analog output module 4 both adopt the existing conventional A/D conversion module and D/A conversion module, as long as the requirements of signal acquisition and signal output are met.
Example 1:
the utility model discloses the device mainly includes: the device comprises a PLC control module, a (test) oil tank, a pt100 temperature sensor 10, an analog output module 4 (4-20 mA), an oil temperature heater, a cooling fan, a liquid crystal display (screen), a (digital) keyboard 6 and the like.
The realized functions are as follows: 1) after the numerical value is input by a numerical keyboard 6 according to the temperature value to be heated, the system (PLC control module) can automatically heat (cool) the transformer oil to the specified temperature, simulate the change of the transformer oil temperature, and then check and debug the oil temperature meter and the winding temperature meter to be tested; 2) the tester device can output a resistance value (100-150 omega) and a current value (4-20 mA) which are adaptive to temperature change and is used for function debugging of equipment such as a converter transformer to be tested, an air cooling system of a transformer, an axial flow fan and the like.
The utility model discloses a use method and theory of operation are:
as figure 1, the utility model relates to a transformer oil temperature detection test appearance based on PLC control.
1. A tank part: in an oil tank device, heating and cooling equipment is arranged, and the aim is to control the change of the oil temperature in the oil tank through a PLC; the top of the oil tank is provided with a temperature sensing port into which a transformer oil temperature sensing bulb is inserted, and the temperature sensing port is designed for checking an oil temperature meter and a winding temperature meter; inside the oil tank, design pt100 temperature sensor 10, as the collection component of oil temperature, will gather the temperature resistance value output PLC, a set ofly is used for output analog quantity, and a set ofly is used for system control, compares with the definite value of actual input, controls oil tank temperature. For example: the device is used for checking the high-temperature-winding high-alarm contact of the winding thermometer at 85 ℃: firstly, inputting an oil temperature constant value of 85 ℃ into the tester through a keyboard 6, then starting the device, controlling the oil temperature of an oil tank at 85 ℃ by a PLC according to the input temperature constant value, inputting the temperature into a winding thermometer through a temperature sensing port at the top of the oil tank by a temperature probe 9 of the transformer to be tested, and enabling the contact point to normally act as a qualified point.
2. Analog input and output module: the analog input/output module works under the control of the PLC, the analog input module 3 inputs the acquired temperature value to the PLC, and the acquired temperature value is displayed in a display (screen); the analog quantity output module 4 is a key part of the tester, the output quantity is used for debugging equipment, the output analog quantity has a current value of 4-20 mA and a resistance value of 100-150 omega, and the output analog quantity is output in real time according to the change of the oil temperature of the oil tank to simulate the actual working condition.
3. A PLC control module: the module is a main control system of the tester, and the Siemens 6ES7231 is used as a core to realize system control.
As shown in fig. 1, the PLC controller controls the analog input/output unit as follows:
the analog input module 3 is a data acquisition unit, the unit works under the control of a PLC, the analog input module 3 directly accesses the analog output by the transformer substation field sensor into an input terminal, the PLC acquires and analyzes the analog, performs data conversion on the analog, converts the analog into a corresponding temperature value, and the temperature value is visually displayed in a display (screen) to realize the temperature detection function.
Analog output module 4 is the important debugging output module of this tester, the realization is to the input of the equipment analog quantity tested, show the required temperature definite value of input in display screen 5, then PLC control system 1 controls heater or cooling device in experimental oil tank 2 according to the definite value of input, make the oil temperature reach the definite value requirement, then through pt100 sensor 10, the temperature feedback to PLC control system that will gather, the PLC system passes through temperature transmitter and exports from output module again, the output volume has 4 ~ 20 mA's current value, 100 ~ 150 omega's resistance value, insert the equipment of being debugged as required, realize debugging and experiment to the equipment of being tested.
The transformer temperature probe 9 is a body device of the transformer to be tested, and is provided with a transformer oil surface temperature probe and a winding temperature probe, the probe can be directly pulled out and inserted into a socket of the transformer oil temperature detection and test instrument, so that the oil temperature meter and the winding temperature meter can be verified by heating and cooling the oil temperature, and the function of verifying the instrument is further realized.
Claims (4)
1. The utility model provides a transformer oil temperature detection test appearance which characterized in that: including PLC, this PLC respectively with display screen (5), keyboard (6), analog input module (3) and analog output module (4) are connected, still including experimental oil tank (2) that contain transformer oil, install temperature sensor (10) in this experimental oil tank (2), this temperature sensor (10) are connected with aforementioned PLC, still install electric heater unit (7) and air cooling device (8) respectively on this experimental oil tank (2), the control end of this electric heater unit (7) and air cooling device (8) is connected with aforementioned PLC respectively, and still install transformer temperature probe (9) that await measuring in this experimental oil tank (2).
2. The transformer oil temperature detection tester of claim 1, wherein: the resistance value output by the analog quantity output module (4) is 100-150 omega, and the current value is 4-20 mA.
3. The transformer oil temperature detection tester of claim 1, wherein: wherein the electric heating device (7) adopts an electric heating pipe, and the air cooling device (8) adopts an electric fan.
4. The transformer oil temperature detection tester of claim 1, wherein: wherein the temperature sensor (10) adopts a pt100 temperature sensor (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020689397.0U CN211741904U (en) | 2020-04-29 | 2020-04-29 | Transformer oil temperature detection tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020689397.0U CN211741904U (en) | 2020-04-29 | 2020-04-29 | Transformer oil temperature detection tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211741904U true CN211741904U (en) | 2020-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020689397.0U Expired - Fee Related CN211741904U (en) | 2020-04-29 | 2020-04-29 | Transformer oil temperature detection tester |
Country Status (1)
| Country | Link |
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| CN (1) | CN211741904U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114136496A (en) * | 2021-10-21 | 2022-03-04 | 国网浙江省电力有限公司金华供电公司 | Portable temperature calibration device |
-
2020
- 2020-04-29 CN CN202020689397.0U patent/CN211741904U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114136496A (en) * | 2021-10-21 | 2022-03-04 | 国网浙江省电力有限公司金华供电公司 | Portable temperature calibration device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201023 |