CN220339460U - Intelligent sensor for oil level of current transformer - Google Patents
Intelligent sensor for oil level of current transformer Download PDFInfo
- Publication number
- CN220339460U CN220339460U CN202321898390.XU CN202321898390U CN220339460U CN 220339460 U CN220339460 U CN 220339460U CN 202321898390 U CN202321898390 U CN 202321898390U CN 220339460 U CN220339460 U CN 220339460U
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- current transformer
- box body
- oil level
- horn antenna
- intelligent sensor
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model discloses an intelligent oil level sensor of a current transformer, which solves the technical problems of time and labor waste and manual inspection omission caused by the fact that the current oil-immersed current transformer does not monitor the displacement of an expander, and improves the operation safety of the oil-immersed current transformer. The intelligent sensor for the oil level of the current transformer is used for monitoring the displacement in an expander of a tested device, the intelligent sensor for the oil level of the current transformer comprises a horn antenna, a chip matched with the horn antenna is placed in a groove at the upper part of the horn antenna, a pressing sheet is arranged above the chip and is connected with a horn antenna through bolts, an onboard antenna is fixed on the pressing sheet through threads, a mounting lug is arranged at the bottom of the horn antenna and is connected with a box body through bolts, a battery is mounted in the box body, an upper cover is arranged at the top of the box body and is in threaded connection with the upper cover, a mounting flange is arranged at the bottom of the box body, and the bottom of the box body is in threaded connection with the mounting flange.
Description
Technical Field
The utility model relates to a sensor, in particular to an intelligent sensor for the oil level of a current transformer.
Background
Oil-immersed current transformers are common electrical equipment in electrical grids. When the gases such as H2, acetylene, methane and the like generated in the oil immersed type current transformer oil exceed the standard, the oil level of the current transformer can be influenced, the expander can undergo abnormal displacement change, and the top-punching and discharge breakdown can be caused when the expander is most serious. The actual oil level condition can be reflected by measuring the expander position, so the importance of expander displacement monitoring is self-evident.
Because of the specificity of the expander structure, manual monitoring of the expander displacement is lack of timeliness and accuracy, the existing oil level monitoring mainly depends on manual inspection and robot inspection, but due to the fact that the observation window has the problems of blurring and inspection frequency, the oil level change trend cannot be accurately identified, and oil level early warning is difficult to be carried out in advance in the defect development process. Therefore, in order to prevent similar accidents, the displacement change of the expander caused by the internal pressure change of the current transformer is required to be accurately reflected, so that the internal oil level condition is reflected, the displacement of the metal expander of the current transformer can be monitored on line, and reliable guarantee is provided for the safe operation of the power transformation equipment.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model discloses the intelligent oil level sensor of the current transformer, thereby solving the technical problems of time and labor waste and omission of manual inspection caused by the fact that the current oil-immersed current transformer does not monitor the displacement of the expander, and improving the operation safety of the oil-immersed current transformer.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a current transformer oil level intelligent sensor for monitor and be surveyed device expander internal displacement, current transformer oil level intelligent sensor contains horn antenna, and horn antenna upper portion recess department is placed rather than complex chip, and the chip top is equipped with the preforming, preforming and horn antenna bolted connection, preforming top screw thread fixed plate carries the antenna, and horn antenna bottom is equipped with the installation ear, and the installation ear passes through the bolt to be connected with the box body, installs the battery in the box body, and the box body top is equipped with the upper cover, box body and upper cover threaded connection, and the box body bottom is equipped with mounting flange, box body bottom and mounting flange threaded connection.
As a preferred embodiment of the utility model, an O-shaped ring is arranged at the joint of the box body and the upper cover.
In a preferred embodiment of the present utility model, the cover is made of ABS resin.
As a preferred embodiment of the utility model, a circle of solar panels is arranged on the outer side wall of the box body.
As a preferred embodiment of the present utility model, the batteries are provided in two types, a rechargeable battery and a non-rechargeable battery, respectively.
As a preferred embodiment of the utility model, the mounting flange is mounted above the device under test expander.
As a preferred embodiment of the utility model, the bottom end of the horn antenna is connected with the protecting cover through threads, and an O-shaped ring is arranged at the threaded connection position.
Compared with the prior art, the utility model has the following advantages:
the utility model discloses an intelligent sensor for the oil level of a current transformer, which is used for monitoring the displacement in an expander of a tested device. According to the utility model, the intelligent current transformer oil level sensor arranged on the expander of the tested device is designed, the principle of millimeter wave ranging is adopted to monitor the displacement of the expander, manual inspection is not needed, the displacement display condition of the expander can be known at the first time, the internal oil level condition is reflected, the displacement of the metal expander of the current transformer is monitored on line, and reliable guarantee is provided for the safe operation of power transformation equipment.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of the present utility model;
FIG. 2 is a schematic illustration of the embodiment of FIG. 1 mounted on an expander of a device under test;
FIG. 3 is a schematic view of another angular configuration of an embodiment of the present utility model;
FIG. 4 is a partial schematic view of the embodiment shown in FIG. 1;
FIG. 5 is a schematic perspective view of the case;
FIG. 6 is a schematic perspective view of a mounting flange;
FIG. 7 is a schematic perspective view of a feedhorn;
FIG. 8 is a top view of a feedhorn;
fig. 9 is a bottom view of the feedhorn.
Reference numerals illustrate:
1-box body, 2-mounting flange, 3-upper cover, 4-solar panel and 5-protecting cover
201-horn antenna, 202-chip, 203-on-board antenna, 204-mounting ear, 205-patch.
Detailed Description
The following describes specific embodiments of the utility model with reference to the drawings and examples:
it should be noted that the structures, proportions, sizes, etc. shown in the drawings are merely for the purpose of understanding and reading the disclosure, and are not intended to limit the scope of the utility model, which is defined by the appended claims.
Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.
As shown in fig. 1-9, which illustrate specific embodiments of the present utility model; as shown in the figure, the intelligent sensor for the oil level of the current transformer is used for monitoring the displacement in an expander of a tested device, the intelligent sensor for the oil level of the current transformer comprises a horn antenna 201, a chip 202 matched with the horn antenna 201 is placed in a groove at the upper part of the horn antenna 201, a pressing sheet 205 is arranged above the chip 202, the pressing sheet 205 is connected with the horn antenna 201 through bolts, an onboard antenna 203 is fixed on the pressing sheet 205 through threads, a mounting lug 204 is arranged at the bottom of the horn antenna 201, the mounting lug 204 is connected with a box body 1 through bolts, a battery is mounted in the box body 1, an upper cover 3 is arranged at the top of the box body 1, the box body 1 is in threaded connection with the upper cover 3, a mounting flange 2 is arranged at the bottom of the box body 1, and the bottom of the box body 1 is in threaded connection with the mounting flange 2.
As shown in fig. 2, an installation schematic diagram of the intelligent sensor of the oil level of the current transformer on the expander of the current transformer is shown, and the design principle of the product is as follows:
millimeter wave ranging is a wireless technology based on millimeter wave frequency band, and is used for measuring the distance between a target object and ranging equipment, and the principle of the millimeter wave ranging is to determine the distance between the target object and the ranging equipment through measurement and calculation mainly according to the relationship between time difference or phase difference and signal propagation speed. The size and the shape of the horn antenna can be selected according to the working frequency range of the chip, and the physical structure of the horn antenna needs to be adapted to the frequency range of waves emitted by the chip so as to ensure the optimal antenna efficiency and performance;
on-board antennas, also known as built-in antennas or PCB antennas, are antennas mounted on a circuit board. Compared with the traditional external antenna, the utility model has a plurality of advantages, and the design of the on-board antenna is mainly considered to be integrated into the layout of the circuit board, so that no extra space is needed for installing and arranging the external antenna. This can save greatly physical space of the device while also having the advantages of electromagnetic compatibility, cost effectiveness, reliability, and consistency.
Preferably, as shown in the figure, an O-ring is arranged at the joint of the box body 1 and the upper cover 3. The box body is in threaded connection with the upper cover, and the O-shaped ring is arranged at the joint, so that the sealing performance of the joint can be improved, and the waterproof performance is higher.
Preferably, as shown in the figure: the upper cover 3 is made of ABS resin. The signal penetrating power of the ABS material is stronger, and the signal transmission is convenient.
Preferably, as shown in the figure: the outer side wall of the box body 1 is provided with a circle of solar panels 4. The box body is wrapped with the solar panel to the greatest extent, so that solar charging is realized.
Preferably, as shown in the figure: the batteries are two types, namely a rechargeable battery and a non-rechargeable battery. The rechargeable battery can be used for a long time through solar charging, but the non-rechargeable battery is reserved when the illumination condition is insufficient, the model of the non-rechargeable battery is 18505, the model of the rechargeable battery is 18650, and the low-power consumption operation of the sensor is realized by adopting a solar power taking and standby battery dual-mode power supply scheme.
Preferably, as shown in the figure: the mounting flange 2 is mounted above the expander of the device under test. The mounting flange is fixed above the expander of the tested device through the punching hole on the expander, and the box body is connected with the mounting flange through the bolt, so that the mounting of the intelligent sensor of the oil level of the current transformer is realized, and the displacement monitoring of the expander of the tested device is realized.
Preferably, as shown in the figure: the bottom end of the horn antenna 201 is connected with the protecting cover 5 through threads, and an O-shaped ring is arranged at the thread connection position. The protecting cover is arranged to protect the product before installation, and the O-shaped ring is arranged to improve the sealing performance.
While the preferred embodiments of the present utility model have been described in detail with reference to the drawings, the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model.
Many other changes and modifications may be made without departing from the spirit and scope of the utility model. It is to be understood that the utility model is not to be limited to the specific embodiments, but only by the scope of the appended claims.
Claims (7)
1. The intelligent sensor for the oil level of the current transformer is used for monitoring the displacement in an expander of a tested device and is characterized by comprising a horn antenna (201), a chip (202) matched with the horn antenna (201) is placed in a groove at the upper part of the horn antenna (201), a pressing sheet (205) is arranged above the chip (202), the pressing sheet (205) is connected with the horn antenna (201) through bolts, a plate-mounted antenna (203) is fixed above the pressing sheet (205) through threads, a mounting lug (204) is arranged at the bottom of the horn antenna (201), the mounting lug (204) is connected with a box body (1) through bolts, a battery is mounted in the box body (1), an upper cover (3) is arranged at the top of the box body (1), the box body (1) is in threaded connection with the upper cover (3), a mounting flange (2) is arranged at the bottom of the box body (1), and the bottom of the box body (1) is in threaded connection with the mounting flange (2).
2. The current transformer oil level intelligent sensor of claim 1, wherein: an O-shaped ring is arranged at the joint of the box body (1) and the upper cover (3).
3. The current transformer oil level intelligent sensor of claim 1, wherein: the upper cover (3) is made of ABS resin.
4. The current transformer oil level intelligent sensor of claim 3, wherein: the outer side wall of the box body (1) is provided with a circle of solar panels (4).
5. The current transformer oil level intelligent sensor of claim 4, wherein: the batteries are two types, namely a rechargeable battery and a non-rechargeable battery.
6. The current transformer oil level intelligent sensor of any one of claims 1-5, wherein: the mounting flange (2) is arranged above the expander of the tested device.
7. The current transformer oil level intelligent sensor of claim 1, wherein: the bottom of the horn antenna (201) is connected with the protecting cover (5) through threads, and O-shaped rings are arranged at the threaded connection positions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321898390.XU CN220339460U (en) | 2023-07-19 | 2023-07-19 | Intelligent sensor for oil level of current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321898390.XU CN220339460U (en) | 2023-07-19 | 2023-07-19 | Intelligent sensor for oil level of current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220339460U true CN220339460U (en) | 2024-01-12 |
Family
ID=89443237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321898390.XU Active CN220339460U (en) | 2023-07-19 | 2023-07-19 | Intelligent sensor for oil level of current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220339460U (en) |
-
2023
- 2023-07-19 CN CN202321898390.XU patent/CN220339460U/en active Active
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