CN213149971U - Oil level alarm device for expander - Google Patents
Oil level alarm device for expander Download PDFInfo
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- CN213149971U CN213149971U CN202021941111.XU CN202021941111U CN213149971U CN 213149971 U CN213149971 U CN 213149971U CN 202021941111 U CN202021941111 U CN 202021941111U CN 213149971 U CN213149971 U CN 213149971U
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- expander
- proximity switch
- inductor
- warning
- oil level
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Abstract
The utility model relates to an expander oil level alarm device, its technical essential is: including the support that is fixed in expander side, locate the inductor on the support, locate expander dustcoat side and with the mutual complex inflation warning proximity switch and the warning proximity switch that contracts of inductor, locate the expander top and be used for by inflation warning proximity switch or the wireless signal transmitter that contracts warning proximity switch and trigger, inflation warning proximity switch and the warning proximity switch that contracts are arranged at vertical direction upper and lower interval, wireless signal transmitter comprises antenna and battery. The utility model discloses simple structure, use reliably for install on the mutual-inductor expander, realize on-line monitoring, in time report to the police, avoid taking place the incident.
Description
Technical Field
The utility model relates to a make alarm device of oil-immersed transformer safe operation, specifically be an expander oil level alarm device.
Background
Expansion devices, the body of which is actually an elastic element, are widely used in power systems today, as are expansion units made up of metal bellows-type expansion devices. When the volume of the oil in the current transformer or the voltage transformer is changed due to the temperature change, the volume of the expander main body is correspondingly changed, so that the volume compensation effect is achieved.
At present, various oil-immersed electrical equipment, such as a current transformer and a voltage transformer with the voltage of more than 35kv, lack an alarm device for on-line monitoring, a power plant is basically unattended, and a worker monitors the working state of power equipment such as the transformers in the power plant in a regular patrol mode. Meanwhile, devices such as a mutual inductor in a power plant do not allow a wired monitoring line to transmit signals, workers can only hold the infrared thermometer regularly to observe the exterior of the devices, and when a reddening point is found, the mutual inductor and the like are proved to have large use risks. However, the monitoring method has poor real-time performance and still has great potential safety hazard.
Referring to fig. 1, when a problem occurs inside an oil-immersed transformer 1, the oil level of an expander 2 communicated with the oil-immersed transformer may change abnormally, that is, when the coil insulation of the transformer has a problem, gas is separated out from transformer oil, so that the expander expands, which is usually indicated that the expander exceeds the maximum stroke or an outer cover is damaged; and the mutual-inductor can be to outside oil discharge appearance when overhauing, and the number of times of oil discharge has been many will cause the inside lack of oil of mutual-inductor, then causes the expander to retract. Therefore, whether the oil immersed transformer runs safely or not and the expander has direct reaction, but whether the expander in a power grid runs normally or not cannot be detected at present.
Disclosure of Invention
The utility model aims at providing a simple structure, use reliable expander oil level alarm device for install on the mutual-inductor expander, realize on-line monitoring, in time report to the police, avoid taking place the incident.
The technical scheme of the utility model is that:
the utility model provides an expander oil level alarm device which the technical essential is: including the support that is fixed in expander side, locate the inductor on the support, locate expander dustcoat side and with the mutual complex inflation warning proximity switch and the warning proximity switch that contracts of inductor, locate the expander top and be used for by inflation warning proximity switch or the wireless signal transmitter that contracts warning proximity switch and trigger, inflation warning proximity switch and the warning proximity switch that contracts are arranged at vertical direction upper and lower interval, wireless signal transmitter comprises antenna and battery.
In the expander oil level alarm device, the storage battery is connected with the solar charging module fixed at the top of the expander outer cover.
According to the oil level alarm device for the expander, the expansion alarm proximity switch, the inductor, the antenna and the storage battery form a closed loop I, and the retraction alarm proximity switch, the inductor, the antenna and the storage battery form a closed loop II.
In the oil level alarm device for the expander, the inductor is a metal inductor.
The utility model has the advantages that:
1. under normal conditions, the inductor is positioned between the expansion alarm proximity switch and the retraction alarm proximity switch in the vertical direction, when the volume of oil of the oil-immersed transformer is increased due to abnormity, the expander communicated with the oil-immersed transformer expands and changes in volume, and the inductor approaches the expansion alarm proximity switch along with the rise of the expander, so that the wireless signal transmitter is triggered, a signal is sent to the remote monitoring end, and the aim of alarming is fulfilled in time; when the oil-immersed mutual inductor is lack of oil, the volume of the oil is reduced, the expander communicated with the oil-immersed mutual inductor can be subjected to volume reduction change, and the inductor approaches to the retraction alarm proximity switch along with the descending of the expander, so that the wireless signal transmitter is triggered, a signal is sent to the remote monitoring end, the purpose of alarming is achieved in time, and the mutual inductor and related components are maintained and repaired in time.
2. Need not external power supply, adopt the battery power supply on the one hand, on the other hand adopts solar charging.
Drawings
FIG. 1 is a diagram illustrating the usage of the present invention;
fig. 2 is a schematic circuit diagram of the present invention.
In the figure: 1. the system comprises an oil-immersed mutual inductor, a 2-expander, a 3-solar charging module, a 4-wireless signal transmitter, a 5-antenna, a 6-expansion alarm proximity switch, a 7-inductor, a 8-retraction alarm proximity switch, a 9-bracket, a 10-expander outer cover and a 11-storage battery.
Detailed Description
As shown in fig. 1 and 2, the expander oil level alarm device comprises a bracket 9 fixed on the side of an expander 2, an inductor 7 arranged on the bracket 9, an expansion alarm proximity switch 6 and a retraction alarm proximity switch 8 which are arranged on the side surface of an expander outer cover 10 and matched with the inductor 7, and a wireless signal transmitter 4 arranged on the top of the expander 2 and triggered by the expansion alarm proximity switch 6 or the retraction alarm proximity switch 8. The expansion alarm proximity switch 6 and the retraction alarm proximity switch 8 are arranged at intervals in the vertical direction, and the wireless signal transmitter 4 consists of an antenna 5 and a storage battery 11 and is assembled into a whole by utilizing a shell.
In this embodiment, the battery 10 is connected to a solar charging module 3 fixed to the top of the expander housing 10. The expansion alarm proximity switch 6, the inductor 7, the antenna 5 and the storage battery 11 form a closed loop I, and the retraction alarm proximity switch 8, the inductor 7, the antenna 5 and the storage battery 11 form a closed loop II. The inductor 7 is a metal inductor.
Under normal conditions, the inductor 7 is positioned between the expansion alarm proximity switch 6 and the retraction alarm proximity switch 8 in the vertical direction, when the volume of oil of the oil-immersed transformer 1 is increased due to abnormity, the expander 2 communicated with the oil expands and changes in volume, and the inductor 7 rises along with the expander 2 and approaches the expansion alarm proximity switch 6, so that the wireless signal transmitter 4 is triggered, a signal is sent to a remote monitoring end, and the aim of alarming is achieved in time; when the oil immersed transformer 1 is lack of oil, the volume of the oil is reduced, the expander 2 communicated with the oil immersed transformer can be reduced in volume, and the inductor 7 approaches the retraction alarm approach switch 8 along with the reduction of the expander 2, so that the wireless signal transmitter 4 is triggered, a signal is sent to the remote monitoring end, and the purpose of alarming is achieved in time.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.
Claims (4)
1. An expander oil level alarm device which characterized in that: including the support that is fixed in expander side, locate the inductor on the support, locate expander dustcoat side and with the mutual complex inflation warning proximity switch and the warning proximity switch that contracts of inductor, locate the expander top and be used for by inflation warning proximity switch or the wireless signal transmitter that contracts warning proximity switch and trigger, inflation warning proximity switch and the warning proximity switch that contracts are arranged at vertical direction upper and lower interval, wireless signal transmitter comprises antenna and battery.
2. The expander oil level warning device of claim 1, wherein: the storage battery is connected with a solar charging module fixed on the top of the expander outer cover.
3. The expander oil level warning device of claim 1, wherein: the expansion alarm proximity switch, the inductor, the antenna and the storage battery form a closed loop I, and the retraction alarm proximity switch, the inductor, the antenna and the storage battery form a closed loop II.
4. The expander oil level warning device of claim 1, wherein: the inductor is a metal inductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021941111.XU CN213149971U (en) | 2020-09-08 | 2020-09-08 | Oil level alarm device for expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021941111.XU CN213149971U (en) | 2020-09-08 | 2020-09-08 | Oil level alarm device for expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213149971U true CN213149971U (en) | 2021-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021941111.XU Active CN213149971U (en) | 2020-09-08 | 2020-09-08 | Oil level alarm device for expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213149971U (en) |
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2020
- 2020-09-08 CN CN202021941111.XU patent/CN213149971U/en active Active
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