CN210719331U - Transformer conservator ultrasonic oil level indicator - Google Patents
Transformer conservator ultrasonic oil level indicator Download PDFInfo
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- CN210719331U CN210719331U CN201921739979.9U CN201921739979U CN210719331U CN 210719331 U CN210719331 U CN 210719331U CN 201921739979 U CN201921739979 U CN 201921739979U CN 210719331 U CN210719331 U CN 210719331U
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Abstract
The utility model relates to a transformer conservator ultrasonic wave oil level gaugember, including ultrasonic measurement module, data display communication module, power module. Wherein the ultrasonic measurement module is connected with the data display communication module, and the data display communication module is connected with the power supply. And ultrasonic emission, ultrasonic receiving and ultrasonic analysis sub-modules are integrated in the ultrasonic measurement module. The data display communication module realizes local display of oil level data and remote transmission of the data. The power module is used for supplying power to the ultrasonic measurement module and the data display communication module. The utility model discloses an oil level height in the transformer conservator is measured to the ultrasonic wave method, and the design module is simple, and the installation is dismantled portably, need not to change the structure of original transformer conservator. Can realize highly uploading to backstage system in real time with transformer conservator oil level, can regard as the contrast with traditional oil level gaugember when patrolling and examining simultaneously, further ensure that the transformer oil level is in normal position, guarantee that transformer work is normal.
Description
Technical Field
The invention relates to an ultrasonic oil level indicator, in particular to an ultrasonic oil level indicator of a transformer oil conservator.
Background
Transformers are widely used in the field of electrical power. The conventional transformers are classified into dry transformers and oil-immersed transformers according to different insulation and cooling methods. The dry type transformer usually uses epoxy resin to cast and encapsulate the iron core and the winding, and a more used type is non-encapsulated at present, and the winding uses special insulating paper to dip special insulating paint and the like to prevent the winding or the iron core from being affected with damp. The oil immersed transformer is characterized in that a body consisting of an iron core and a winding is placed in an oil tank filled with transformer oil, and the insulation and heat dissipation of the transformer winding are realized through the transformer oil. Although the dry-type transformer is environment-friendly compared with the oil-immersed transformer, the dry-type transformer is higher in manufacturing cost and smaller in general capacity, so that the using amount of the oil-immersed transformer is far more than that of the dry-type transformer, and especially for the voltage class of 110kV and above, the oil-immersed transformer is generally used.
The rise or fall of the liquid level of the transformer oil in the oil-filled transformer may occur along with the change of the temperature. Exposing the core and coil portions when the oil level is lowered can affect heat dissipation and insulation. And air is discharged and sucked from the tank cover seam along with the fluctuation of the oil level, and the oil temperature of the upper layer in the transformer is very high, so that the transformer oil is quickly oxidized and moistened. Therefore, the oil conservators are arranged on the common oil-immersed transformers.
The oil conservator is an oil storage device for the transformer, when the volume of transformer oil expands or contracts along with the change of the oil temperature, the oil conservator plays the roles of oil storage and oil supplement, and can ensure that an oil tank is full of oil. Meanwhile, the oil conservator is arranged, so that the contact surface of the transformer and the air is reduced, and the moisture, dust and oxidized oil dirt absorbed from the air are deposited in the depositor at the bottom of the oil conservator, thereby greatly slowing down the degradation speed of the transformer oil.
The oil conservator is provided with a communicated oil level indicator or a connecting rod type oil level indicator in actual use, and in daily inspection, inspection personnel can directly see the liquid level height in the oil conservator through the oil level indicator. However, in the actual use process, the oil level gauge fails due to the fact that the communicated oil level gauge in the oil conservator is blocked, and the connecting rod type oil level gauge is also blocked by a capsule or a diaphragm in the oil conservator, so that the oil level gauge fails. Therefore, according to the inspection standard process of the national power grid, the transformer conservator and the oil level gauge need to be inspected regularly, wherein the inspection is carried out on whether the communicated or connecting rod type oil level gauge works effectively or not by changing the height of the oil level in the conservator through charging and discharging transformer oil, and whether the reading is accurate or not. However, the oil charging and discharging work of the transformer is relatively troublesome, the workload is large, and the checking mode also does not meet the actual requirement of the smart grid.
Therefore, an online oil level gauge for transformer oil is needed, which can measure the height of the oil level in the transformer conservator in real time and transmit the data to a system background in a wired or wireless manner, so that operation and maintenance personnel can know the height of the oil level in the transformer conservator in real time. Meanwhile, the measured data of the online oil level gauge can be compared with the readings of the traditional communicated or connecting rod type oil level gauge in the inspection process to be used as the reliability inspection of the data, so that the oil level in the transformer is confirmed, and the normal work of the oil-immersed transformer is ensured.
Disclosure of Invention
The invention aims to provide an ultrasonic oil level gauge for an oil conservator of a transformer, aiming at the actual requirement that online measurement of the oil level height needs to be realized in the oil conservator of the oil immersed transformer.
The utility model provides a transformer conservator ultrasonic wave oil level gaugember, includes ultrasonic measurement module, data display communication module, power module. Wherein the ultrasonic measurement module is connected with the data display communication module, and the data display communication module is connected with the power supply module. An ultrasonic transmitting submodule, an ultrasonic receiving submodule and an ultrasonic analyzing submodule are integrated in the ultrasonic measuring module. The data display communication module realizes local display of oil level data and remote transmission of the data. The power module is used for supplying power to the ultrasonic measurement module and the data display communication module.
The ultrasonic measurement module is adsorbed under the transformer conservator through an ultrasonic coupling agent, and the ultrasonic emission and receiving plane is ensured to be parallel to the liquid level of the transformer conservator. When the transformer conservator ultrasonic oil level indicator works, an ultrasonic transmitting submodule in an ultrasonic measuring module transmits 2-10MHz ultrasonic waves, the ultrasonic waves enter a transformer conservator through a coupling agent, the ultrasonic waves are reflected when reaching the surface of the oil level in the conservator, the ultrasonic waves return along a transmitting path, an ultrasonic receiving submodule can receive the reflected ultrasonic waves, the propagation speed of the ultrasonic waves in the transformer oil is basically constant, and the height of the transformer oil level in the transformer conservator can be calculated as long as the time difference from the transmission of the ultrasonic waves to the reflection is measured.
Has the advantages that: the ultrasonic oil level gauge of the transformer conservator has the following advantages: the device has few components and is simple and convenient to install; the external structure of the original transformer conservator is not changed; the oil level of the transformer oil conservator can be measured on line.
Drawings
Fig. 1 is a schematic diagram of a capsule transformer conservator.
Fig. 2 is a schematic view of the installation of the ultrasonic oil level gauge of the transformer oil conservator.
In the figure, 1 is an ultrasonic measuring module; 2 is a data display communication module; and 3, a power supply module.
Fig. 3 is a schematic diagram of an ultrasonic oil level gauge ultrasonic measuring module of a transformer conservator.
In the figure, 4 is an ultrasonic wave transmitting and receiving sub-module; 5, an ultrasonic measuring module mounting base; 6 is an ultrasonic analysis module; 7 is an extension line; and 8 is an ultrasonic measuring module connecting terminal.
Detailed Description
The invention is further illustrated with reference to the accompanying drawings and specific examples:
fig. 1 is a schematic diagram of a capsule transformer conservator. It can be seen in the figure that the oil in the transformer conservator does not contact with the outside air, if a capsule type transformer conservator is adopted, when the oil level rises, the capsule becomes small, and when the oil level falls, the capsule becomes large, and the oil level of the conservator is read through a side communication type oil level indicator.
Fig. 2 is a schematic view of the installation of the ultrasonic oil level gauge of the transformer oil conservator. The transformer conservator ultrasonic oil level indicator is only provided with three modules: ultrasonic measurement module 1, data display communication module 2, power module 3, it is very convenient to install. The ultrasonic measurement module 1 is only required to be adsorbed under the transformer conservator through an ultrasonic coupling agent, and the ultrasonic emission and receiving plane is ensured to be parallel to the liquid level of the transformer conservator. The ultrasonic measurement module 1 is fixed below the transformer conservator only by gluing or strong magnet adsorption without opening holes, and the original external structure of the transformer conservator is not changed. The ultrasonic measurement module 1 is connected with the data display communication module 2, the data display communication module 2 is connected with the power supply module 3, and the data display communication module 2 and the power supply module 3 are usually placed near a transformer weak current control box.
Fig. 3 is a schematic diagram of an ultrasonic oil level gauge ultrasonic measuring module of a transformer conservator. The ultrasonic measurement module comprises an ultrasonic emission sub-module, an ultrasonic receiving sub-module and an ultrasonic analysis sub-module, and the three sub-modules are integrally designed to form the ultrasonic measurement module. The ultrasonic wave transmitting and receiving sub-module 4 is an ultrasonic wave transmitting and receiving area in the figure. The ultrasonic measurement module mounting base 5 plays a role in fixing the ultrasonic measurement module 1, and the fixing mode can be selected from gluing or strong magnet adsorption. The ultrasonic analysis module 6 analyzes the reflected ultrasonic waves, and the oil level height of the transformer conservator is directly obtained by calculating the travel time of the ultrasonic waves. The extension line 7 realizes that the height of the oil level in the conservator is transmitted to the data display communication module 2 in a digital quantity mode. Two of the connecting terminals 8 of the ultrasonic measuring module at the tail end of the extension line 7 are used for data transmission, and the other two are used for supplying power to the ultrasonic measuring module.
According to the invention, the height of the oil level in the transformer conservator is measured by adopting an ultrasonic method, the design module is simple, and the installation and the disassembly are simple and convenient; the structure of the original transformer conservator is not required to be changed. Can realize highly uploading the backstage system in real time with transformer conservator internal oil level, can regard as the contrast with traditional oil level gaugember when patrolling and examining simultaneously, further ensure that the transformer oil level is in normal position, guarantee that the transformer work is normal.
The above-mentioned embodiments are merely preferred embodiments of the present invention, which should not be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (5)
1. Transformer conservator ultrasonic oil level gaugember, its characterized in that: the ultrasonic measurement device comprises an ultrasonic measurement module, a data display communication module and a power supply module; the oil level data acquisition system comprises an ultrasonic measurement module, a data display communication module, a power module, an ultrasonic transmission submodule, an ultrasonic receiving submodule and an ultrasonic analysis submodule, wherein the ultrasonic measurement module is connected with the data display communication module, the data display communication module is connected with the power module, the ultrasonic transmission submodule, the ultrasonic receiving submodule and the ultrasonic analysis submodule are integrated in the ultrasonic measurement module, the data display communication module realizes local display and data remote transmission of oil level data, and the power module is used for supplying power to the ultrasonic measurement module and the data display communication module.
2. The transformer conservator ultrasonic oil level gauge according to claim 1, wherein: the ultrasonic measurement module is adsorbed under the transformer conservator through an ultrasonic coupling agent, and the planes of the ultrasonic emission submodule and the ultrasonic receiving submodule are parallel to the liquid level of the transformer conservator.
3. The transformer conservator ultrasonic oil level gauge according to claim 1, wherein: the ultrasonic measurement module is fixed below the transformer conservator in a gluing or strong magnet adsorption mode.
4. The transformer conservator ultrasonic oil level gauge according to claim 1, wherein: an ultrasonic transmitting submodule, an ultrasonic receiving submodule and an ultrasonic analyzing submodule in the ultrasonic measuring module are designed integrally.
5. The transformer conservator ultrasonic oil level gauge according to claim 1, wherein: the transformer conservator ultrasonic oil level indicator can realize real-time online measurement of the oil level in the transformer conservator and transmit data to a power background system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921739979.9U CN210719331U (en) | 2019-10-17 | 2019-10-17 | Transformer conservator ultrasonic oil level indicator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921739979.9U CN210719331U (en) | 2019-10-17 | 2019-10-17 | Transformer conservator ultrasonic oil level indicator |
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| CN210719331U true CN210719331U (en) | 2020-06-09 |
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| CN201921739979.9U Active CN210719331U (en) | 2019-10-17 | 2019-10-17 | Transformer conservator ultrasonic oil level indicator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117146934A (en) * | 2023-08-31 | 2023-12-01 | 陕西声科电子科技有限公司 | Oil level gauge for power transformer oil conservator |
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2019
- 2019-10-17 CN CN201921739979.9U patent/CN210719331U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117146934A (en) * | 2023-08-31 | 2023-12-01 | 陕西声科电子科技有限公司 | Oil level gauge for power transformer oil conservator |
| CN117146934B (en) * | 2023-08-31 | 2024-06-21 | 陕西声科电子科技有限公司 | Oil level gauge for power transformer oil conservator |
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