CN217738319U - Temperature-pressure liquid level integrated intelligent sensor for distribution transformer - Google Patents
Temperature-pressure liquid level integrated intelligent sensor for distribution transformer Download PDFInfo
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- CN217738319U CN217738319U CN202221181276.0U CN202221181276U CN217738319U CN 217738319 U CN217738319 U CN 217738319U CN 202221181276 U CN202221181276 U CN 202221181276U CN 217738319 U CN217738319 U CN 217738319U
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Abstract
The utility model relates to a temperature-pressure liquid level integrated intelligent sensor of a distribution transformer, which comprises a shielding shell, wherein a shielding cover is connected above the shielding shell; an output interface is arranged on one side of the shielding shell; a double-layer circuit unit is arranged in the shielding shell; the double-layer circuit unit comprises a communication unit serving as an upper-layer circuit and a signal processing unit serving as a lower-layer circuit; the communication unit is fixed on the signal processing unit through a copper column; the signal processing unit is respectively and electrically connected with the temperature and humidity sensor, the photoelectric liquid level sensor and the temperature and pressure sensor; the lower part of the shielding shell is connected with a sensor mounting rod; the utility model relates to a rationally, compact structure and convenient to use.
Description
Technical Field
The utility model belongs to the technical field of distribution transformer on-line monitoring technique and specifically relates to an integrated sensor of integrated oil temperature oil pressure liquid level environment humiture is related to.
Background
The distribution transformer is one of important devices in power supply and distribution systems of industrial and mining enterprises and civil buildings, and occupies a very important position in the power supply and distribution systems, and the reliability of the distribution transformer directly influences the normal production of the power industry. The running process of the transformer is influenced by the environment, and the running state of the transformer can be diagnosed through information such as oil temperature and oil pressure of the transformer, so that the monitoring of the ambient temperature and humidity around the transformer, the oil temperature of the transformer, the liquid level and the pressure is very necessary, and workers can accurately judge the running state of the transformer according to the parameters obtained in real time and also can prevent delayed faults.
The traditional distribution transformer is only provided with a thermometer and can only measure a single temperature, maintenance personnel are required to observe the distribution transformer in a close range, real-time data cannot be acquired remotely, and report omission is easy to generate. If data such as the monitoring oil temperature, oil pressure, liquid level, environment humiture respectively, then need install a plurality of sensors, increased manpower and materials, still can occupy great space. In order to solve the problems in the prior art, a highly integrated sensor integrating oil temperature, oil pressure, liquid level, environment temperature and humidity measurement, small volume, high sensitivity, strong reliability and remote communication is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a distribution transformer warm-pressing liquid level integration intelligent sensor is provided overall, distribution transformer oil temperature oil pressure liquid level monitoring's combined type sensor promptly.
In order to solve the above problems, the utility model adopts the following technical proposal:
a temperature and pressure liquid level integrated intelligent sensor of a distribution transformer comprises a shielding shell, wherein a shielding cover is connected above the shielding shell; an output interface is arranged on one side of the shielding shell;
a double-layer circuit unit is arranged in the shielding shell; the double-layer circuit unit comprises a communication unit serving as an upper-layer circuit and a signal processing unit serving as a lower-layer circuit;
the communication unit is fixed on the signal processing unit through a copper column; the signal processing unit is respectively and electrically connected with the temperature and humidity sensor, the photoelectric liquid level sensor and the temperature and pressure sensor;
the lower part of the shielding shell is connected with a sensor mounting rod.
As a further improvement of the above technical solution:
the communication unit adopts wired 485 or mobile 5G to send the acquired information to the background of the upper computer through the wired 485 or mobile 5G;
the power conversion module adopts an AC-to-DC module, converts alternating current 220V into direct current 12V, and provides electric energy for each unit module;
the temperature and humidity sensor is fixed on the outer side of the shielding shell through the clamping groove and is electrically connected and communicated with the signal processing unit through an I2C bus;
a nameplate is arranged on the shielding shell;
the lower part of the shielding shell is connected with a sensor mounting rod through a base sealing ring and threads.
A groove is arranged at the upper part of the sensor mounting rod to embed the photoelectric liquid level sensor;
the bottom of the sensor mounting rod is provided with a temperature and pressure sensor, and the temperature and pressure sensor is fixed through a bottom cap;
the signal processing unit comprises a chip U2, in the chip U2, an interface I2C and an I/O (input/output) device are used for carrying out data acquisition on the internal sensor, carrying out operation processing on various data acquired by the temperature and humidity sensor, the photoelectric liquid level sensor and the temperature and pressure sensor, packaging the data, and sending the data to the upper computer through a 485 communication module and/or a 5G module.
The 485 communication module comprises a 485 isolation receiving and transmitting module Q4, and pins 3 and 4 of the 485 isolation receiving and transmitting module Q4 are connected with a serial port of the signal processing unit so as to convert the serial port into 485 for communication with the outside;
the 5G module comprises a chip U4, pins 5 and 6 of the chip U4 are connected with a serial port of the signal processing unit, and the serial port is converted into a 5G signal to be in wireless communication with the outside.
Temperature and humidity sensor adopts environment temperature and humidity sensor J2, and in environment temperature and humidity sensor J2, pin 1, 3 connect power conversion module's positive pole and negative pole respectively, and pin 2, 4 are I2C communication interface, and power conversion module turns into digital signal with ambient temperature and humidity analog, sends for chip U2 through the I2C interface, and the back of being operated by chip U2 is sent the host computer with data packing.
Photoelectric liquid level sensor adopts level sensor J3, and in level sensor J3, pin 1, 3 connect power conversion module's positive pole and negative pole respectively, and pin 2 is switching value output interface, and this sensor changes the switching value with the liquid level data conversion, sends for chip U2 through pin 2, calculates the back by chip U2 and sends the host computer with data packing.
The temperature pressure sensor adopts an oil pressure and oil temperature sensor J4, pins 1 and 3 of the oil pressure and oil temperature sensor J4 are respectively connected with the anode and the cathode of the power conversion module, pins 2 and 4 are I2C communication interfaces, the temperature and humidity sensor converts oil pressure and oil temperature analog quantity into digital signals, the digital signals are sent to a chip U2 through the I2C interface, and the data are packaged and sent to an upper computer after the operation is carried out by a chip U2 signal processing unit.
A nameplate is arranged on the shielding shell;
the shielding cover and the shielding shell are made of aluminum materials with insulating paint attached to the surfaces;
the shielding cover and the shielding shell are fastened through threads, and an upper cover sealing ring is embedded between the shielding cover and the shielding shell;
the communication unit is fixed to the shield case by screws.
The utility model relates to a rationally, low cost, durable, safe and reliable, easy operation, labour saving and time saving, saving fund, compact structure and convenient to use.
Drawings
Fig. 1 is a block diagram of the present invention.
Fig. 2 is a schematic diagram of the hardware structure of the present invention.
Fig. 3 is a schematic structural diagram of the signal processing unit of the present invention.
Fig. 4 is a schematic diagram of the communication unit structure of the present invention.
Fig. 5 is a schematic diagram of the sensor circuit structure of the present invention.
Detailed Description
Referring to fig. 1-5, the combined sensor for monitoring oil temperature, oil pressure and liquid level of a distribution transformer in the embodiment includes a shielding shell (9), wherein a shielding cover (1) is connected above the shielding shell (9) through an upper cover sealing ring (2); an output interface (3) is arranged on one side of the shielding shell (9);
a nameplate (7) is arranged on the shielding shell (9);
the shielding cover (1) and the shielding shell (9) are made of aluminum materials with insulating paint attached to the surfaces, the shielding cover (1) and the shielding shell (9) are fastened through threads, and an upper cover sealing ring (2) is embedded between the shielding cover (1) and the shielding shell (9) to prevent water vapor from entering the interior to damage a circuit.
A double-layer circuit unit is arranged in the shielding shell (9); the double-layer circuit unit comprises a communication unit (14) as an upper-layer circuit and a signal processing unit (6) as a lower-layer circuit;
the communication unit (14) is fixed on the shielding shell (9) through screws; the communication unit (14) adopts wired 485 or mobile 5G to send the acquired information to the background of the upper computer through the wired 485 or mobile 5G;
the power supply conversion module (4) is an AC-to-DC module, converts alternating current 220V into direct current 12V and provides electric energy for each unit module; the communication unit (14) is fixed on the signal processing unit (6) through a copper column (5); the signal processing unit (6) is respectively and electrically connected with the temperature and humidity sensor (8), the photoelectric liquid level sensor (11) and the temperature and pressure sensor (12);
temperature and humidity sensor (8) is fixed in shielding shell (9) outside through the draw-in groove, gathers the ambient temperature humidity data around the vary voltage through the mesh, and humidity resolution 0.024 RH, temperature resolution 0.01 ℃, through the communication of I2C bus and signal processing unit (6) electricity connection, both can well protect temperature and humidity sensor (8), can also make temperature and humidity sensor (8) fully contact external environment, improve the data accuracy.
One side of the nameplate (7) is provided with a mesh.
The lower part of the shielding shell (9) is connected with a sensor mounting rod (10) through a base sealing ring (15) and a screw thread.
Sensor installation pole (10) are split type design, and keep unanimous with former thermometer base size, do not influence transformer normal operating, and the pole main part is opened has a plurality of meshs, has not only alleviateed whole weight, can also make transformer oil fully with the sensor contact, improve the sensor accuracy. The base sealing ring (15) well seals the whole sensor and the transformer thermometer base, and oil leakage is prevented.
A groove is arranged at the upper part of the sensor mounting rod (10) so as to embed the photoelectric liquid level sensor (11), the resolution ratio is 0.2mm, and the detection range is 5mm.
The bottom of the sensor mounting rod (10) is provided with a temperature and pressure sensor (12), and the temperature and pressure sensor (12) is fixed through a bottom cap (13); the measured pressure is transmitted to a silicon pressure sensitive chip with a precise mechanical structure through an isolation diaphragm and the poured silicon oil, so that the precise conversion of the oil pressure and the analog signal is realized.
The signal processing unit (6) comprises a chip U2, in the chip U2, an interface I2C and an I/O (input/output) are used for carrying out data acquisition on an internal sensor, and various data acquired by a temperature and humidity sensor (8), a photoelectric liquid level sensor (11) and a temperature and pressure sensor (12) are packed after being operated and processed, and are sent to an upper computer through a 485 communication module and/or a 5G module.
The 485 communication module comprises a 485 isolation receiving and transmitting module Q4, and pins 3 and 4 of the 485 isolation receiving and transmitting module Q4 are connected with a serial port of the signal processing unit (6) so as to convert the serial port into 485 for communication with the outside;
the 5G module comprises a chip U4, pins 5 and 6 of the chip U4 are connected with a serial port of the signal processing unit (6), and the serial port is converted into a 5G signal to carry out wireless communication with the outside.
Temperature and humidity sensor (8) adopt environment temperature and humidity sensor J2, and in environment temperature and humidity sensor J2, pin 1, 3 connect the positive pole and the negative pole of power conversion module (4) respectively, and pin 2, 4 are I2C communication interface, and power conversion module (4) convert environment temperature and humidity analog into digital signal, send for chip U2 through the I2C interface, are calculated the back by chip U2 and send the host computer with data packing.
Photoelectric liquid level sensor (11) adopt level sensor J3, and in level sensor J3, pin 1, 3 connect the positive pole and the negative pole of power conversion module (4) respectively, and pin 2 is switching value output interface, and this sensor changes the liquid level data conversion switching value into through pin 2 and sends for chip U2, sends the host computer with data packing after being operated by chip U2.
The temperature pressure sensor (12) adopts an oil pressure and oil temperature sensor J4, pins 1 and 3 of the oil pressure and oil temperature sensor J4 are respectively connected with the anode and the cathode of the power conversion module (4), pins 2 and 4 are I2C communication interfaces, the temperature and humidity sensor (8) converts oil pressure and oil temperature analog quantity into digital signals, the digital signals are sent to the chip U2 through the I2C interface, and data are packed and sent to an upper computer after being operated by a chip U2 signal processing unit.
The present invention has been fully described for a clear disclosure, and is not further described in detail in the prior art.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; it is obvious to those skilled in the art that a plurality of embodiments of the present invention may be combined. Such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.
Claims (8)
1. The utility model provides a distribution transformer temperature and pressure liquid level integration intelligent sensor which characterized in that: comprises a shielding shell (9), and a shielding cover (1) is connected above the shielding shell (9); an output interface (3) is arranged on one side of the shielding shell (9);
a double-layer circuit unit is arranged in the shielding shell (9); the double-layer circuit unit comprises a communication unit (14) as an upper-layer circuit and a signal processing unit (6) as a lower-layer circuit;
the communication unit (14) is fixed on the signal processing unit (6) through a copper column (5); the signal processing unit (6) is respectively and electrically connected with the temperature and humidity sensor (8), the photoelectric liquid level sensor (11) and the temperature and pressure sensor (12); a sensor mounting rod (10) is connected to the lower part of the shield case (9).
2. The temperature, pressure and liquid level integrated intelligent sensor of the distribution transformer according to claim 1, characterized in that: the communication unit (14) adopts wired 485 or mobile 5G to send the acquired information to the background of the upper computer through the wired 485 or mobile 5G;
the power supply conversion module (4) adopts an AC-to-DC module to convert alternating current 220V into direct current 12V and provide electric energy for each unit module;
the temperature and humidity sensor (8) is fixed on the outer side of the shielding shell (9) through a clamping groove and is electrically connected and communicated with the signal processing unit (6) through an I2C bus;
a nameplate (7) is arranged on the shielding shell (9);
the lower part of the shielding shell (9) is connected with a sensor mounting rod (10) through a base sealing ring (15) and a screw thread.
3. The temperature, pressure and liquid level integrated intelligent sensor of the distribution transformer according to claim 1, characterized in that:
a groove is arranged at the upper part of the sensor mounting rod (10) to embed the photoelectric liquid level sensor (11);
a temperature and pressure sensor (12) is arranged at the bottom of the sensor mounting rod (10), and the temperature and pressure sensor (12) is fixed through a bottom cap (13);
the signal processing unit (6) comprises a chip U2, in the chip U2, an interface I2C and an I/O (input/output) carry out data acquisition on an internal sensor, various data acquired by a temperature and humidity sensor (8), a photoelectric liquid level sensor (11) and a temperature and pressure sensor (12) are packed after being subjected to operation processing, and the data are sent to an upper computer through a 485 communication module and/or a 5G module.
4. The temperature, pressure and liquid level integrated intelligent sensor of the distribution transformer according to claim 3, characterized in that: the 485 communication module comprises a 485 isolation receiving and transmitting module Q4, and pins 3 and 4 of the 485 isolation receiving and transmitting module Q4 are connected with a serial port of the signal processing unit (6) so as to convert the serial port into 485 for communication with the outside;
the 5G module comprises a chip U4, pins 5 and 6 of the chip U4 are connected with a serial port of the signal processing unit (6), and the serial port is converted into a 5G signal to carry out wireless communication with the outside.
5. The temperature, pressure and liquid level integrated intelligent sensor of the distribution transformer according to claim 3, characterized in that: temperature and humidity sensor (8) adopt environment temperature and humidity sensor J2, and in environment temperature and humidity sensor J2, pin 1, 3 connect the positive pole and the negative pole of power conversion module (4) respectively, and pin 2, 4 are I2C communication interface, and power conversion module (4) convert environment temperature and humidity analog into digital signal, send for chip U2 through the I2C interface, are calculated the back by chip U2 and send the host computer with data packing.
6. The temperature, pressure and liquid level integrated intelligent sensor of the distribution transformer according to claim 3, characterized in that: photoelectric liquid level sensor (11) adopt level sensor J3, and in level sensor J3, pin 1, 3 connect the positive pole and the negative pole of power conversion module (4) respectively, and pin 2 is switching value output interface, and this sensor changes the liquid level data conversion switching value into through pin 2 and sends for chip U2, sends the host computer with data packing after being operated by chip U2.
7. The temperature, pressure and liquid level integrated intelligent sensor of the distribution transformer according to claim 3, characterized in that: the temperature pressure sensor (12) adopts an oil pressure and oil temperature sensor J4, pins 1 and 3 of the oil pressure and oil temperature sensor J4 are respectively connected with the anode and the cathode of the power conversion module (4), pins 2 and 4 are I2C communication interfaces, the temperature and humidity sensor (8) converts oil pressure and oil temperature analog quantity into digital signals, the digital signals are sent to the chip U2 through the I2C interface, and data are packed and sent to an upper computer after being operated by a chip U2 signal processing unit.
8. The temperature, pressure and liquid level integrated intelligent sensor of the distribution transformer according to claim 1, characterized in that:
a nameplate (7) is arranged on the shielding shell (9);
the shielding cover (1) and the shielding shell (9) are made of aluminum materials with insulating paint adhered to the surfaces;
the shielding cover (1) and the shielding shell (9) are fastened through threads, and an upper cover sealing ring (2) is embedded between the shielding cover (1) and the shielding shell (9);
the communication unit (14) is fixed to the shield case (9) by screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221181276.0U CN217738319U (en) | 2022-05-17 | 2022-05-17 | Temperature-pressure liquid level integrated intelligent sensor for distribution transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221181276.0U CN217738319U (en) | 2022-05-17 | 2022-05-17 | Temperature-pressure liquid level integrated intelligent sensor for distribution transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217738319U true CN217738319U (en) | 2022-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221181276.0U Active CN217738319U (en) | 2022-05-17 | 2022-05-17 | Temperature-pressure liquid level integrated intelligent sensor for distribution transformer |
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| Country | Link |
|---|---|
| CN (1) | CN217738319U (en) |
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2022
- 2022-05-17 CN CN202221181276.0U patent/CN217738319U/en active Active
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