CN214624717U - Oil-immersed transformer on-line monitoring device - Google Patents
Oil-immersed transformer on-line monitoring device Download PDFInfo
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- CN214624717U CN214624717U CN202120651700.2U CN202120651700U CN214624717U CN 214624717 U CN214624717 U CN 214624717U CN 202120651700 U CN202120651700 U CN 202120651700U CN 214624717 U CN214624717 U CN 214624717U
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Abstract
The utility model discloses an oil-immersed transformer on-line monitoring device, including the oil temperature monitoring devices who is used for monitoring the interior oil temperature of transformer, a pressure monitoring devices who is used for monitoring the inside air pressure of transformer and be used for monitoring the oil level monitoring devices of oil level in the transformer tank, oil temperature monitoring devices includes oil temperature sensor, oil temperature sensor and the interior oil contact of transformer tank, pressure monitoring devices includes pressure sensor, pressure sensor and the inside intercommunication of oil tank of transformer, oil level monitoring devices includes photoelectric distance measuring sensor, target object and oil float, oil float is arranged in on the oil level of transformer, the target object is connected with oil float, oil float moves the target object and reciprocates, photoelectric distance measuring sensor is located the top of target object, photoelectric distance measuring sensor measures the distance between its and the target object. The utility model discloses the accurate data and the continuous variation condition of the oil temperature of real-time incessant monitoring transformer, inside air pressure and oil level, the running state of accurate monitoring transformer.
Description
Technical Field
The utility model relates to a transformer technical field, more particularly, the utility model relates to an oil-immersed transformer on-line monitoring device.
Background
The power transformer is a very critical and indispensable device in a power system, and the reliable operation of the power transformer is an important guarantee for the reliable operation of a power grid. The application of the power transformer in the power grid can be said to be extensive and large, various defects are inevitably generated due to aging of insulation materials and sealing materials in the long-term operation process, and if the defects cannot be found and corrected in time, serious faults and damage of equipment are easily caused along with the further development of the problems. Due to the existing equipment and installation conditions thereof, the defects can not be found through manual patrol, and due to the reasons of untimely manual patrol, large patrol workload, large technical difficulty in finding problems and the like, a considerable number of power transformer products are caused to be final large faults due to initial small problems in each year in a power system, so that unexpected power failure faults, equipment replacement and maintenance are caused.
At present, a large number of oil-immersed transformers run on various power system installation sites, various operation defects can occur in the long-term operation process, some defects are difficult to find through manual inspection, and if the defects cannot be found and corrected in time, serious faults and even damage of equipment can be caused.
In view of the above, how to solve the above technical defects has become an urgent technical problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
For the defect of solving current oil-immersed transformer be difficult to through artifical inspection discovery, the big scheduling problem of the technical degree of difficulty of discovery problem, the utility model discloses creatively provides an oil-immersed transformer on-line monitoring device, this monitoring device includes oil temperature monitoring devices, pressure monitoring devices and oil level monitoring devices, in real time to oil-immersed transformer's oil temperature, inside air pressure and oil level monitor, accurate monitoring transformer running state, be convenient for in time discover the potential operation defect of transformer, the emergence of the transformer trouble that significantly reduces and power failure accident, the reliability of effective improve equipment operation.
In order to achieve the technical purpose, the utility model discloses an on-line monitoring device for an oil-immersed transformer, which comprises an oil temperature monitoring device for monitoring the oil temperature in the transformer, a pressure monitoring device for monitoring the air pressure in the transformer and an oil level monitoring device for monitoring the oil level in an oil tank of the transformer,
the oil temperature monitoring device comprises an oil temperature sensor which is contacted with oil in the transformer oil tank,
the pressure monitoring device comprises a pressure sensor which is communicated with the inside of an oil tank of the transformer,
the oil level monitoring device comprises a photoelectric distance measuring sensor, a target object and an oil float, wherein the oil float is arranged on the oil surface of the transformer, the target object is connected with the oil float, the oil float drives the target object to move up and down, the photoelectric distance measuring sensor is located above the target object, and the photoelectric distance measuring sensor measures the distance between the photoelectric distance measuring sensor and the target object.
Furthermore, the oil-immersed transformer on-line monitoring device further comprises a connecting pipe, a pressure release valve and a sensor seat, wherein the sensor seat is of a hollow structure, one end of the connecting pipe is in sealed connection with an oil tank of the transformer, the other end of the connecting pipe is in sealed connection with the sensor seat, the sensor seat is further in sealed connection with the pressure release valve, the sensor seat, the connecting pipe and the oil tank of the transformer are communicated, the pressure sensor and the photoelectric distance measuring sensor are fixed on the sensor seat, and the target object is arranged in the connecting pipe.
Furthermore, the target object is connected with the oil float through a mechanical connecting rod and a color scale pipe, the target object is arranged at the upper end of the color scale pipe, the lower end of the color scale pipe is connected with the upper end of the mechanical connecting rod, and the lower end of the mechanical connecting rod is connected with the oil float.
Further, the upper end face of the target is covered on the upper end of the color code tube, and the lower part of the target is placed in the color code tube.
Furthermore, a circuit board is installed in the sensor seat, the pressure sensor and the photoelectric distance measuring sensor are welded on the circuit board, an oil temperature sensor lead is also welded on the circuit board, and the oil temperature sensor lead is connected with the oil temperature sensor.
Furthermore, the oil-immersed transformer on-line monitoring device further comprises a controller, and the pressure sensor, the photoelectric distance measuring sensor and the oil temperature sensor are all connected with the controller.
The utility model has the advantages that:
(1) the utility model provides an oil-immersed transformer on-line monitoring device can be in real time incessant monitoring oil-immersed transformer's the accurate data and the continuous variation condition of oil temperature, inside air pressure and oil level, accurate monitoring transformer running state, the potential operation defect of being convenient for in time discover the transformer, the transformer trouble that significantly reduces and the emergence of power failure accident, the reliability of effective improve equipment operation.
(2) The utility model discloses be applied to the monitoring of transformer oil level with photoelectric distance measuring sensor, can the accurate measurement oil level position, rather than the approximate oil level position of segmentation measurement, monitoring data is accurate.
(3) The utility model provides an oil-immersed transformer on-line monitoring device still includes the controller, can handle and contrastive analysis to the data of gathering, monitors the running state of transformer, need not on-the-spot artifical inspection, can accurately learn the running state of transformer to in time discover the running defect of transformer. Moreover, the monitoring and management of a plurality of transformers can be realized, and the labor is saved.
Drawings
Fig. 1 is the utility model discloses oil-immersed transformer on-line monitoring device's structure schematic diagram.
Fig. 2 is the utility model discloses oil-immersed transformer on-line monitoring device installs the schematic structure on the transformer.
In the figure, the position of the upper end of the main shaft,
1. an oil level monitoring device; 11. a photoelectric distance measuring sensor; 12. a target object; 13. an oil float; 14. a mechanical linkage; 15. a color scale tube; 2. an oil temperature sensor; 3. a pressure sensor; 4. connecting pipes; 5. a pressure relief valve; 6. a sensor seat; 7. a circuit board; 8. an oil temperature sensor lead; 9. a controller; 20. and an oil tank.
Detailed Description
The oil immersed transformer on-line monitoring device provided by the invention is explained and explained in detail below with reference to the attached drawings.
As shown in fig. 1, the present embodiment specifically discloses an online monitoring device for an oil-immersed transformer, which includes an oil temperature monitoring device for monitoring the temperature of oil in the transformer, a pressure monitoring device for monitoring the pressure of air in the transformer, and an oil level monitoring device 1 for monitoring the oil level in an oil tank 20 of the transformer; the oil temperature monitoring device comprises an oil temperature sensor 2, the oil temperature sensor 2 is in contact with oil in the transformer oil tank 20, and the oil temperature sensor 2 adopts an adopted temperature sensor to monitor the oil temperature in the oil tank 20 in real time; the pressure monitoring device comprises a pressure sensor 3, the pressure sensor 3 is communicated with the inside of the oil tank 20 of the transformer, and the pressure sensor 3 monitors the air pressure in the oil tank 20 in real time; the oil level monitoring device 1 comprises a photoelectric distance measuring sensor 11, a target object 12 and an oil float 13, wherein the oil float 13 is arranged on the oil surface of a transformer, the target object 12 is connected with the oil float 13, the oil float 13 drives the target object 12 to move up and down, the photoelectric distance measuring sensor 11 is positioned above the target object 12, and the photoelectric distance measuring sensor 11 measures the distance between the photoelectric distance measuring sensor 11 and the target object 12. When the oil level of the transformer changes, the oil floater 13 on the oil surface floats up and down along with the oil level, the oil floater 13 drives the target object 12 to move up and down together, and the photoelectric distance measuring sensor 11 monitors the change condition of the oil level of the transformer in real time by measuring the distance between the photoelectric distance measuring sensor and the target object 12. The photoelectric distance measuring sensor 11 is applied to transformer oil level monitoring, the oil level position in the oil tank 20 can be accurately measured, the approximate oil level position is not measured in a segmented mode, and the measurement is more accurate.
The utility model discloses a these several key physical parameters of oil level monitoring devices 1, pressure monitoring devices and oil temperature monitoring devices real-time supervision oil level, inside air pressure and oil temperature, can real-time supervision oil-immersed transformer's data and operation conditions, the potential operation defect of being convenient for in time discover the transformer can make the maintenance plan of equipment in advance, the transformer trouble that significantly reduces and the emergence of power failure accident, effective reliability of improving equipment operation.
As shown in fig. 1, the oil-immersed transformer online monitoring device further comprises a connecting pipe 4, a pressure release valve 5 and a sensor seat 6, wherein the sensor seat 6 is of a hollow structure, one end of the connecting pipe 4 is hermetically connected with an oil tank 20 of the transformer, the other end of the connecting pipe 4 is hermetically connected with the sensor seat 6, the sensor seat 6 is further hermetically connected with the pressure release valve 5, and the pressure release valve 5 is preferably fixed at the upper end of the sensor seat 6; the pressure release valve 5, the sensor seat 6, the connecting pipe 4 and the transformer oil tank 20 are communicated, the pressure sensor 3 and the photoelectric distance measuring sensor 11 are fixed on the sensor seat 6, and the target object 12 is arranged in the connecting pipe 4. As shown in fig. 2, in the present embodiment, the connecting pipe 4 is perpendicular to the top cover of the oil tank 20, so that the connecting pipe 4 is kept in a vertical state, and the target 12 moves up and down along with the rise and fall of the oil level, and the measured oil level data is more accurate.
The target object 12 is connected with the oil floater 13 through a mechanical connecting rod 14 and a color scale tube 15, the target object 12 is arranged at the upper end of the color scale tube 15, the lower end of the color scale tube 15 is connected with the upper end of the mechanical connecting rod 14, and the lower end of the mechanical connecting rod 14 is connected with the oil floater 13. In the present embodiment, the mechanical link 14 and the color target tube 15 are both located in the connecting tube 4, and the mechanical link 14 and the color target tube 15 are both perpendicular to the top cover of the fuel tank 20 and maintain a vertical state. When the oil level in the oil tank 20 changes, the oil float 13 floats up and down, so that the mechanical connecting rod 14 and the color scale tube 15 are driven to move up and down synchronously, the target object 12 at the upper end of the color scale tube 15 moves up and down along with the oil float, the photoelectric distance measuring sensor 11 above the target object 12 measures the distance between the photoelectric distance measuring sensor and the target object 12 in real time, the oil level changes, and the measured distance data also changes synchronously.
Further, the upper end surface of the object 12 is covered on the upper end of the color target tube 15, and the lower part of the object 12 is placed in the color target tube 15. When the pressure release valve 5 is actuated, the gas inside the tank 20 pushes the target 12 open, and the compressed air is released to the outside through the connecting pipe 4, the color target tube 15, the sensor holder 6, and the pressure release valve 5. After release, the target 12 falls back over the upper end of the colour indicator tube 15. The object 12 is positioned so as to avoid the build-up of pressure in the colour indicator tube 15 and facilitate complete release of pressure from the tank 20.
A circuit board 7 is installed in the sensor seat 6, the pressure sensor 3 and the photoelectric distance measuring sensor 11 are welded on the circuit board 7, an oil temperature sensor lead 8 is also welded on the circuit board 7, and the oil temperature sensor lead 8 is connected with the oil temperature sensor 2. The circuit board 7 facilitates the transmission of data collected by each sensor. In this embodiment, through holes are formed in the center portions of the target 12, the color scale tube 15, the mechanical link 14 and the oil float 13, and after the oil temperature sensor lead 8 passes through the center through holes of the target 12, the color scale tube 15, the mechanical link 14 and the oil float 13, the tail end of the oil temperature sensor lead 8 is welded to the oil temperature sensor 2 to transmit oil temperature data.
In another embodiment, the oil-immersed transformer online monitoring device further comprises a controller 9, the pressure sensor 3, the photoelectric distance measuring sensor 11 and the oil temperature sensor 2 are all connected with the controller 9, and the controller 9 realizes digital synchronous correlation comparison and analysis of all parameters. The pressure sensor 3, the photoelectric distance measuring sensor 11 and the oil temperature sensor 2 are connected with the controller 9 in a wired or wireless mode, and signal transmission is achieved. In the present embodiment, the controller 9 is mounted on the fuel tank 20 or mounted in other nearby accessories, and the circuit board 7 is connected with the controller 9 through a cable for signal transmission. The controller 9 is controlled in a conventional manner. The controller can process, compare and analyze the acquired data, monitor the running state of the transformer, and accurately know the running state of the transformer without manual inspection on site, so that the running defects of the transformer can be found in time. Moreover, the monitoring and management of a plurality of transformers can be realized, and the labor is saved.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description herein, references to the description of the terms "this embodiment," "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, and simple improvements made in the spirit of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. An oil-immersed transformer on-line monitoring device is characterized by comprising an oil temperature monitoring device for monitoring the temperature of oil in a transformer, a pressure monitoring device for monitoring the air pressure in the transformer and an oil level monitoring device (1) for monitoring the oil level in an oil tank (20) of the transformer,
the oil temperature monitoring device comprises an oil temperature sensor (2), the oil temperature sensor (2) is in contact with oil in a transformer oil tank (20),
the pressure monitoring device comprises a pressure sensor (3), the pressure sensor (3) is communicated with the inside of an oil tank (20) of the transformer,
oil level monitoring devices (1) include photoelectric distance measuring sensor (11), target object (12) and oil float (13), oil float (13) are arranged in on the oil level of transformer, target object (12) with oil float (13) are connected, oil float (13) drive target object (12) reciprocate, photoelectric distance measuring sensor (11) are located the top of target object (12), photoelectric distance measuring sensor (11) are measured photoelectric distance measuring sensor (11) with distance between target object (12).
2. The oil-immersed transformer online monitoring device according to claim 1, characterized in that the oil-immersed transformer online monitoring device further comprises a connecting pipe (4), a pressure release valve (5) and a sensor seat (6), the sensor seat (6) is of a hollow structure, one end of the connecting pipe (4) is hermetically connected with an oil tank (20) of the transformer, the other end of the connecting pipe (4) is hermetically connected with the sensor seat (6), the sensor seat (6) is further hermetically connected with the pressure release valve (5), the sensor seat (6), the connecting pipe (4) and the transformer oil tank (20) are communicated, the pressure sensor (3) and the photoelectric distance measuring sensor (11) are fixed on the sensor seat (6), and the target object (12) is placed in the connecting pipe (4).
3. The oil-filled transformer online monitoring device according to claim 2, characterized in that the target (12) is connected with the oil float (13) through a mechanical connecting rod (14) and a color scale tube (15), the target (12) is placed at the upper end of the color scale tube (15), the lower end of the color scale tube (15) is connected with the upper end of the mechanical connecting rod (14), and the lower end of the mechanical connecting rod (14) is connected with the oil float (13).
4. An oil-filled transformer on-line monitoring device according to claim 3, characterized in that the upper end surface of the object (12) covers the upper end of the color scale tube (15), and the lower part of the object (12) is placed in the color scale tube (15).
5. The oil-filled transformer online monitoring device according to claim 2, characterized in that a circuit board (7) is installed in the sensor base (6), the pressure sensor (3) and the photoelectric distance measuring sensor (11) are welded on the circuit board (7), an oil temperature sensor lead (8) is also welded on the circuit board (7), and the oil temperature sensor lead (8) is connected with the oil temperature sensor (2).
6. Oil-filled transformer on-line monitoring device according to claim 1 or 5, characterized in that, the oil-filled transformer on-line monitoring device further comprises a controller (9), and the pressure sensor (3), the photoelectric distance measuring sensor (11) and the oil temperature sensor (2) are all connected to the controller (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120651700.2U CN214624717U (en) | 2021-03-30 | 2021-03-30 | Oil-immersed transformer on-line monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120651700.2U CN214624717U (en) | 2021-03-30 | 2021-03-30 | Oil-immersed transformer on-line monitoring device |
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| CN214624717U true CN214624717U (en) | 2021-11-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115149631A (en) * | 2022-06-23 | 2022-10-04 | 四川蓝海化工（集团）有限公司 | Leak-proof oil-immersed UPS (uninterrupted Power supply) |
-
2021
- 2021-03-30 CN CN202120651700.2U patent/CN214624717U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115149631A (en) * | 2022-06-23 | 2022-10-04 | 四川蓝海化工（集团）有限公司 | Leak-proof oil-immersed UPS (uninterrupted Power supply) |
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