CN202502219U - Calibration device for gas relay - Google Patents
Calibration device for gas relay Download PDFInfo
- Publication number
- CN202502219U CN202502219U CN2012201093777U CN201220109377U CN202502219U CN 202502219 U CN202502219 U CN 202502219U CN 2012201093777 U CN2012201093777 U CN 2012201093777U CN 201220109377 U CN201220109377 U CN 201220109377U CN 202502219 U CN202502219 U CN 202502219U
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- CN
- China
- Prior art keywords
- buchholz relay
- calibrating installation
- calibration
- installation according
- preset device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a calibration device for a gas relay. The device is composed of a pressure-producing preset device, a piston pressure control output device, a pressure sensor, a motion recorder and a display result output device which are connected successively. Compared with the prior art, the calibration device of the utility model capable of being used for accurately calibrating a on-site gas relay is advantaged in convenient debugging and wiring of the device, stable debugging data, high-accuracy calibration and operational easiness.
Description
Technical field
The utility model relates to a kind of calibrating installation, especially relates to the Buchholz relay calibrating installation that a kind of electric system is used.
Background technology
At present, the Buchholz relay of domestic employing has three kinds of forms: float-type (GR-3 type and FJ-22 type), baffle-type (generally being applying unit transformation of the way voluntarily on FJ-22 type basis) and combined type (FJ3-80 and QJ-80 type).The baffle-type Buchholz relay is that the lower pontoon with the float-type Buchholz relay changes baffle plate into, still keeps and go up floating drum, and after improving like this, the vibration strength raising, and overcome the shortcoming of lower pontoon oil impregnate, reliability greatly improves, thereby is widely used.Develop into open cup more and more at present and replace floating drum, replace mercury contact, come to this like FJ3-80, QJ1-80 type combined type Buchholz relay with dry-reed contact; The FJ3-80 type generally is used for medium and small transformer, and the QJ1-80 type is used for high-power transformer and forced oil-circulation cooled transformer.
The non electrical quantity protection is along with developing rapidly of China's power grid construction more and more obtains paying attention to; In (2004) No. 104 literary compositions of State Grid Corporation of China's production and operation; Regulation: transformer, reactor, load ratio bridging switch heavily protection act on tripping operation, and work is tested in the calibration of deciding that requires to pay attention to Buchholz relay in the file simultaneously.National grid in 2005 is given birth to [2005] No. 172 literary composition promulgations of skill 110 (66) kV～500kV oil-filled transformer (reactor) operations specifications " and DL/T 572-2010 power transformer operations specification in all clearly during the operation of regulation transformer gaseous shield should connect signal and tripping operation.
And with regard to present on-the-spot operating maintenance situation, because the limitation of dismounting transportation and calibration equipment, carry out even not verification for a long time when longer in the time between overhauls(TBO) for the verification of Buchholz relay.Therefore, need investigate, for the application of Buchholz relay protection with reliably lay the foundation, improve on-the-spot detection means, for tranformer protection provides support from the several aspects of application, principle, mechanism and calibration.
Buchholz relay is claimed gas relay again, and electric system is to the method for calibration of Buchholz relay, and the most frequently used has two kinds, and first kind is moment indirect experiment method such as employing, and another kind is to adopt Buchholz relay flow velocity experiment table method.It is big that these two kinds of methods exist measuring error at present, problem such as inaccurate or inconvenient operation of verification.
The utility model content
The purpose of the utility model is exactly to provide a kind of simple in structure for the defective that overcomes above-mentioned prior art existence, and calibration operation is easy, and the calibration accuracy rate is high, calibrates Buchholz relay calibrating installation efficiently.
The purpose of the utility model can realize through following technical scheme:
A kind of Buchholz relay calibrating installation presses preset device, piston pressure control follower, pressure transducer, action record appearance and display result output unit to connect and compose successively by making.
Described making presses preset device to be provided with air pump.
Described making presses preset device when the calibration Buchholz relay, to be connected with Buchholz relay.
The signal output part of described pressure transducer links to each other with the input end of action record appearance.
Described display result output unit is made up of digital indicator, operation keyboard and power switch.
Force value when equipment adopts the measurement gas piston to promote baffle plate reflects the oil speed size that baffle position is corresponding, thereby Buchholz relay is calibrated.
Compared with prior art, the utility model can be used for the scene Buchholz relay is carried out accurate verification, equipment debugging, easy-to-connect, and tune-up data is stable, and calibration accuracy is high, processing ease.
Description of drawings
Fig. 1 is the structural representation of this utility model.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
Embodiment
A kind of Buchholz relay calibrating installation presses preset device 1, piston pressure control follower 2, pressure transducer 3, action record appearance 4 and display result output unit 5 to connect and compose successively by making.
Make and press preset device 1 to be provided with air pump.Make and press preset device 1 when the calibration Buchholz relay, to be connected with Buchholz relay.The signal output part of pressure transducer 3 links to each other with the input end of action record appearance 4.Display result output unit 5 is made up of digital indicator, operation keyboard and power switch.
Force value when equipment adopts the measurement gas piston to promote baffle plate reflects the oil speed size that baffle position is corresponding, thereby Buchholz relay is calibrated.
Claims (5)
1. a Buchholz relay calibrating installation is characterized in that, this equipment presses preset device, piston pressure control follower, pressure transducer, action record appearance and display result output unit to connect and compose successively by making.
2. a kind of Buchholz relay calibrating installation according to claim 1 is characterized in that, described making presses preset device to be provided with air pump.
3. a kind of Buchholz relay calibrating installation according to claim 1 is characterized in that, described making presses preset device when the calibration Buchholz relay, to be connected with Buchholz relay.
4. a kind of Buchholz relay calibrating installation according to claim 1 is characterized in that the signal output part of described pressure transducer links to each other with the input end of action record appearance.
5. a kind of Buchholz relay calibrating installation according to claim 1 is characterized in that described display result output unit is made up of digital indicator, operation keyboard and power switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201093777U CN202502219U (en) | 2012-03-21 | 2012-03-21 | Calibration device for gas relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201093777U CN202502219U (en) | 2012-03-21 | 2012-03-21 | Calibration device for gas relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202502219U true CN202502219U (en) | 2012-10-24 |
Family
ID=47038829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201093777U Expired - Lifetime CN202502219U (en) | 2012-03-21 | 2012-03-21 | Calibration device for gas relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202502219U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048614A (en) * | 2012-12-11 | 2013-04-17 | 上海市电力公司 | Portable type gas relay scene calibrator |
| CN107356865A (en) * | 2016-05-09 | 2017-11-17 | 国网辽宁省电力有限公司营口供电公司 | A kind of Buchholz relay tester |
-
2012
- 2012-03-21 CN CN2012201093777U patent/CN202502219U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048614A (en) * | 2012-12-11 | 2013-04-17 | 上海市电力公司 | Portable type gas relay scene calibrator |
| CN107356865A (en) * | 2016-05-09 | 2017-11-17 | 国网辽宁省电力有限公司营口供电公司 | A kind of Buchholz relay tester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121024 |