CN210953154U - Platinum resistor temperature rise composite device for transformer temperature measurement - Google Patents
Platinum resistor temperature rise composite device for transformer temperature measurement Download PDFInfo
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- CN210953154U CN210953154U CN201921212086.9U CN201921212086U CN210953154U CN 210953154 U CN210953154 U CN 210953154U CN 201921212086 U CN201921212086 U CN 201921212086U CN 210953154 U CN210953154 U CN 210953154U
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- electric heating
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Abstract
The utility model discloses a platinum resistance temperature rise set composite for transformer temperature measurement is equipped with casing (1) that the diameter is 3~5mm, has separately thin film platinum resistance temperature sensor (2) and electric heating element (3) that set up in casing (1), thin film platinum resistance temperature sensor (2) meet with temperature signal line (4), electric heating element (3) meet with electric heating element lead wire (5), temperature signal line (4) and electric heating element lead wire (5) are fixed outside casing (1)'s port is drawn by sealed glue (6). When the temperature monitoring device is used, only an amplifying and filtering signal processing chip is arranged between the temperature signal wire and the single chip microcomputer, and meanwhile, the current does not need to be converted into a digital signal and corresponding temperature operation is carried out, so that the temperature monitoring device has the advantages of being simple in structure, effectively improving monitoring accuracy and reliability and the like.
Description
Technical Field
The utility model relates to a sensor, especially a simple structure, can effectively improve the transformer temperature measurement of monitoring accuracy and reliability and use platinum resistance temperature rise set composite for transformer temperature measurement for the transformer temperature measurement.
Background
At present, a temperature controller for a transformer is provided with a platinum resistance temperature sensor which is arranged on a transformer oil tank and used for monitoring the temperature of top oil, and an output signal of the platinum resistance temperature sensor is connected with a singlechip after signal processing such as filtering and amplification; and the current signal of the mutual inductor connected with the transformer coil is collected, is subjected to signal processing such as filtering and amplification by an alternating current transmitter and is then connected with the single chip microcomputer. The display can directly display the oil temperature of the top layer of the transformer and the temperature of the transformer winding calculated by the singlechip according to the direct current signal after current conversion. Because the temperature signal and the current signal need different signal processing circuits to perform amplification, filtering and other processing, the cost is high, the reliability is low, especially, the current signal needs to be changed into a digital signal, and a corresponding temperature signal is calculated according to the digital signal, the process is complex, and the monitoring accuracy is reduced.
Disclosure of Invention
The utility model relates to a solve the above-mentioned technical problem that prior art exists, provide a simple structure, can effectively improve the transformer temperature measurement of monitoring accuracy and reliability and use platinum resistance temperature rise set composite.
The technical solution of the utility model is that: a platinum resistor temperature rise composite device for measuring temperature of a transformer is provided with a shell with the diameter of 3-5 mm, a thin film platinum resistor temperature sensor and an electric heating element which are separately arranged are arranged in the shell, the thin film platinum resistor temperature sensor is connected with a temperature signal wire, the electric heating element is connected with an electric heating element lead wire, and the temperature signal wire and the electric heating element lead wire are fixed at a port of the shell through sealant and are led out of the shell.
The utility model discloses a place film platinum resistance temperature sensor and the electric heating element who meets with converter output in the casing that the diameter is 3~5mm, the temperature signal line meets with the singlechip through signal processing circuit. When the load of the transformer is zero, the reading of the display is the temperature of the transformer oil; when the transformer is loaded, the electric heating element connected with the output end of the converter generates heat (Q = I)2Rt) increases the resistance of the thin film platinum resistor in equal proportion and the display reads the temperature proportional to the current in the transformer winding coil, i.e., the temperature of the transformer winding. When in use, onlyNeed set up an amplification filtering signal processing chip between temperature signal line and singlechip can, need not to convert the electric current into digital signal and carry out corresponding temperature operation simultaneously, have simple structure and effectively improve advantages such as monitoring accuracy and reliability.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The utility model discloses a transformer is platinum resistance temperature rise set composite for temperature measurement as shown in figure 1, it is 4 mm's casing 1 to be equipped with the diameter, there are separately thin film platinum resistance temperature sensor 2 and the electric heating element 3 that sets up in casing 1, thin film platinum resistance temperature sensor 2 and electric heating element 3 each other contactless promptly, thin film platinum resistance temperature sensor 2 meets with temperature signal line 4, electric heating element 3 meets with electric heating element lead wire 5, temperature signal line 4 and electric heating element lead wire 5 are fixed at casing 1's port and are drawn forth outside casing 1 by sealed glue 6.
When the electric heating element is used, the shell 1 is fixed on a transformer oil tank according to the method of the prior art, the temperature signal wire 4 is connected with the single chip microcomputer through the signal processing circuit, and the electric heating element lead 5 is connected with the output end of the converter.
Claims (1)
1. The utility model provides a platinum resistance temperature rise set composite for transformer temperature measurement which characterized in that: the device is provided with a shell (1) with the diameter of 3-5 mm, a film platinum resistor temperature sensor (2) and an electric heating element (3) which are separately arranged are arranged in the shell (1), the film platinum resistor temperature sensor (2) is connected with a temperature signal wire (4), the electric heating element (3) is connected with an electric heating element lead (5), and the temperature signal wire (4) and the electric heating element lead (5) are fixed at the port of the shell (1) through a sealant (6) and are led out of the shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921212086.9U CN210953154U (en) | 2019-07-30 | 2019-07-30 | Platinum resistor temperature rise composite device for transformer temperature measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921212086.9U CN210953154U (en) | 2019-07-30 | 2019-07-30 | Platinum resistor temperature rise composite device for transformer temperature measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210953154U true CN210953154U (en) | 2020-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921212086.9U Active CN210953154U (en) | 2019-07-30 | 2019-07-30 | Platinum resistor temperature rise composite device for transformer temperature measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210953154U (en) |
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2019
- 2019-07-30 CN CN201921212086.9U patent/CN210953154U/en active Active
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