CN201503299U - Analog signal output type oil level gauge for oil conservator of transformer - Google Patents
Analog signal output type oil level gauge for oil conservator of transformer Download PDFInfo
- Publication number
- CN201503299U CN201503299U CN2009202037876U CN200920203787U CN201503299U CN 201503299 U CN201503299 U CN 201503299U CN 2009202037876 U CN2009202037876 U CN 2009202037876U CN 200920203787 U CN200920203787 U CN 200920203787U CN 201503299 U CN201503299 U CN 201503299U
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- oil level
- angular transducer
- analog signal
- needle pivot
- gear
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Abstract
The utility model relates to an analog signal output type oil level gauge for an oil conservator of a transformer. The analog signal output type oil level gauge comprises a casing, an indication warning part, a magnetic-coupling transmission part, a cross wall, a connecting rod and a ball float, wherein a non-contact angular transducer is additionally arranged on the indication warning part, a gear is fixed on a rotating shaft of the non-contact angular transducer, and the other gear meshed with the gear is fixed on a indicator needle shaft; and the indicator needle shaft drives the rotating shaft of the non-contact angular transducer to rotate through the gear, and the non-contact angular transducer transforms the rotating angle into an industrial standard analog signal and then outputs the analog signal. The utility model can not only perform limiting oil level warning and the oil level on-site indication, but also perform long-distance real-time monitoring, and meanwhile, since the pull-in torque of the non-contact angular transducer is extremely small, the indication error and the return difference are not increased; furthermore, the non-contact angular transducer can directly outputs the industrial standard analog signal, therefore, a transmitter is not required to be additionally arranged for transformation; and in addition, the rotating angle detected through the non-contact angular transducer can be matched with the rotating angle of the indicator needle shaft by changing the gear ratio.
Description
Technical field
The utility model relates to a kind of transformer oil conservater oil level indicator, more specifically, can export the industrial standard simulating signal and don't increase index error and the transformer oil conservater simulating signal output type oil level indicator of return difference realization continuous monitoring thereby relate to.
Background technology
At present, the transformer oil conservater of installing and using on the oil-filled transformer oil conservater generally is made up of housing, indication warning part, magnetic coupling running part, next door, connecting rod and ball float etc. with oil level indicator.Described housing is separated into air chamber and grease chamber's two parts by the next door.Described indication is reported to the police and partly is installed in the air chamber, and it comprises the device of pointer, needle pivot, dial plate, limit position alarm switch and driving switch.Described magnetic coupling running part comprises two blocks of magnet steel, transmission shaft and the gear shift device that is separated by the next door.One and needle pivot Joint in described two blocks of magnet steel, another piece magnet steel and transmission shaft Joint, transmission shaft is connected with ball float with connecting rod by the gear shift device.Its principle of work is: the ball float with the oil level lifting drives the needle pivot rotation by connecting rod and magnetic coupling running part, thereby on dial plate, indicate the height of oil level by pointer, and when pointer was indicated to oil level height extreme position, alerting signal was sent in the switch motion of driving stage spacing alarm respectively.Weak point is: above-mentioned oil level indicator can only provide the long-distance alarm switching signal of limit oil level and the scene indication of oil level, and the remote monitoring in real time of oil level can not be provided.
In order to address this problem, existing Chinese patent ZL 200620093308.6 discloses a kind of technical scheme, promptly suit one output is proportional to the angular transducer or the potentiometer of the resistance signal of angle on needle pivot, is converted to 4～20mA industrial standard current signal by transmitter again.Yet, the angular transducer of output resistance signal of the prior art or potentiometer generally have been the contact contact, so its detent torque is all bigger, even the general minimum of detent torque of conductive plastics angular transducer that detent torque is less or potentiometer also has 10g.cm, generally about 50g.cm.That is to say, want to allow angular transducer or the potentiometer and the needle pivot coaxial rotation of this output resistance signal, must partly increase the suction-combining force of magnet steel in original magnetic coupling, yet this is subjected to the restriction of the performance of magnetic material own.Self-evident, owing to increased the additional drag torque on the needle pivot, the motion delay of needle pivot rotation be will make like this, thereby the index error and the return difference of transformer oil level meter increased than connecting rod ball float.
Therefore, a kind of not only exportable industrial standard simulating signal need be provided but also not increase index error and return difference, and be convenient to the technical scheme that the one of ordinary skilled in the art implements.
Summary of the invention
Therefore, in order to overcome above-mentioned deficiency of the prior art, the utility model provides a kind of transformer oil conservater simulating signal output type oil level indicator, this transformer oil level meter not only has the on-the-spot deixis of warning of limit oil level and oil level, but also can export the remote real time monitoring function that the industrial standard simulating signal realizes oil level under the situation that does not increase index error and return difference.
The technical solution of the utility model is: this transformer oil conservater is made up of housing, indication warning part, magnetic coupling running part, next door, connecting rod and ball float etc. with simulating signal output type oil level indicator, install a contactless angle sensor additional in indication warning part, fix a gear in the rotating shaft of contactless angle sensor, another gear that is meshed with it is fixed on the needle pivot.Needle pivot rotates by the rotating shaft of the contactless angle sensor of gear drive, and contactless angle sensor is transformed to the output of industrial standard simulating signal with corner.Rotating shaft according to contactless angle sensor is different with the locus of needle pivot, and a pair of gear of setting up can be that stud wheel also can be a bevel gear.
By above technical scheme, compared with prior art, it not only has limit oil level and reports to the police and on-the-spot deixis, and can also realize remote real time monitoring function, and because the detent torque of contactless angle sensor is less than 1g.cm, additional drag torque on the needle pivot is very little, influences index error and return difference hardly; And contactless angle sensor can directly export the industrial standard simulating signal, needn't increase transmitter conversion in addition; Have, the corner of contactless angle sensor and needle pivot corner can recently mate by the translating gear transmission again.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing, in the accompanying drawing:
Fig. 1 is the structural representation of an embodiment of the utility model;
Fig. 2 is the structural representation of another embodiment of the utility model.
Embodiment
Describe the utility model below with reference to accompanying drawings in detail.
Fig. 1 is the structural representation of first embodiment of the present utility model.A stud wheel 141 is fixed in the rotating shaft of contactless angle sensor 15 and needle pivot 13 parallel placements on needle pivot 13, the stud wheel 142 that is meshed with stud wheel 141 is fixed in the rotating shaft of contactless angle sensor 15.Like this, the gear set drive magnet steel 22 that ball float 5 passes through connecting rod 4 and running part with the lifting of oil level rotates, and rotate by the magnet steel 21 that magnetic coupling drives next door 3 opposite sides, rotate thereby make with the affixed needle pivot 14 of magnet steel 21, on dial plate 11, indicate the height of oil level with the affixed pointer 12 of needle pivot, simultaneously, needle pivot 13 rotates by the rotating shaft that stud wheel 141 and stud wheel 142 drive contactless angle sensor 15, contactless angle sensor 15 output industrial standard simulating signals.
Fig. 2 is the structural representation of second embodiment of the present utility model.The rotating shaft of contactless angle sensor 15 and needle pivot 13 intersect to be placed, and fixes a bevel gear 144 on needle pivot 13, and the bevel gear 143 that is meshed with bevel gear 144 is fixed in the rotating shaft of contactless angle sensor 15.Remainder is identical with first embodiment, no longer describes.Contactless angle sensor is set like this it can be drawn the outer placement separately of housing of transformer oil level meter,, can pull down pointer and dial plate, outside housing, contactless angle sensor is debugged in the occasion that needs field adjustable to safeguard.
Claims (2)
1. a transformer oil conservater is with simulating signal output type oil level indicator, by shell, indication warning part, the magnetic coupling running part, the next door, composition such as connecting rod and ball float, described shell is separated into air chamber and grease chamber's two parts by the next door, described indication is reported to the police and partly is installed in the air chamber, it comprises pointer, needle pivot, dial plate, the device of limit position alarm switch and driving switch, described magnetic coupling running part comprises two blocks of magnet steel that separated by the next door, transmission shaft and gear shift device, one and needle pivot Joint in described two blocks of magnet steel, another piece magnet steel and transmission shaft Joint, transmission shaft is connected with ball float with connecting rod by the gear shift device, it is characterized in that: report to the police in indication and partly install a contactless angle sensor additional, and the parallel placement of the rotating shaft that makes contactless angle sensor with needle pivot, fix a stud wheel on needle pivot, another stud wheel that is meshed with it is fixed in the rotating shaft of contactless angle sensor.
2. transformer oil conservater according to claim 1 simulating signal output type oil level indicator, it is characterized in that: the rotating shaft of wherein contactless angle sensor can also be intersected placement with needle pivot, fix a bevel gear on needle pivot, another bevel gear that is meshed with it is fixed in the rotating shaft of contactless angle sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202037876U CN201503299U (en) | 2009-10-09 | 2009-10-09 | Analog signal output type oil level gauge for oil conservator of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202037876U CN201503299U (en) | 2009-10-09 | 2009-10-09 | Analog signal output type oil level gauge for oil conservator of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201503299U true CN201503299U (en) | 2010-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202037876U Expired - Fee Related CN201503299U (en) | 2009-10-09 | 2009-10-09 | Analog signal output type oil level gauge for oil conservator of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201503299U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103270398A (en) * | 2010-12-27 | 2013-08-28 | Abb技术有限公司 | Oil level gauge with electronic output |
| CN107369530A (en) * | 2017-06-29 | 2017-11-21 | 广东电网有限责任公司佛山供电局 | A kind of oil conservator used for transformer capsule breakage monitoring device |
| CN108489575A (en) * | 2018-03-14 | 2018-09-04 | 国网天津市电力公司电力科学研究院 | Float light shading type transformer optical fiber oil level indicator |
| CN108871491A (en) * | 2018-07-06 | 2018-11-23 | 中国电力科学研究院有限公司 | An Intelligent Oil Level Gauge for Transformer Bushing |
| CN111521242A (en) * | 2019-02-01 | 2020-08-11 | 和光工业股份有限公司 | Liquid level detection device |
-
2009
- 2009-10-09 CN CN2009202037876U patent/CN201503299U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103270398A (en) * | 2010-12-27 | 2013-08-28 | Abb技术有限公司 | Oil level gauge with electronic output |
| CN107369530A (en) * | 2017-06-29 | 2017-11-21 | 广东电网有限责任公司佛山供电局 | A kind of oil conservator used for transformer capsule breakage monitoring device |
| CN108489575A (en) * | 2018-03-14 | 2018-09-04 | 国网天津市电力公司电力科学研究院 | Float light shading type transformer optical fiber oil level indicator |
| CN108871491A (en) * | 2018-07-06 | 2018-11-23 | 中国电力科学研究院有限公司 | An Intelligent Oil Level Gauge for Transformer Bushing |
| CN108871491B (en) * | 2018-07-06 | 2022-04-26 | 中国电力科学研究院有限公司 | Intelligent oil level meter for transformer bushing |
| CN111521242A (en) * | 2019-02-01 | 2020-08-11 | 和光工业股份有限公司 | Liquid level detection device |
| CN111521242B (en) * | 2019-02-01 | 2021-08-31 | 和光工业股份有限公司 | Liquid level detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100609 Termination date: 20131009 |