CN103383377B - Testing and calibrating device for gas-dissolved-in-transformer-oil online monitoring system - Google Patents

Testing and calibrating device for gas-dissolved-in-transformer-oil online monitoring system Download PDF

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Publication number
CN103383377B
CN103383377B CN201210135338.9A CN201210135338A CN103383377B CN 103383377 B CN103383377 B CN 103383377B CN 201210135338 A CN201210135338 A CN 201210135338A CN 103383377 B CN103383377 B CN 103383377B
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oil
gas
sample
magnetic valve
buffer unit
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CN103383377A (en
CN103383377A8 (en
Inventor
吴杨
谢裕焕
孔胜杰
宋春林
王波
王一波
沈路力
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NINGBO LIGONG ONLINE MONITORING TECHNOLOGY Co Ltd
Electric Power Research Institute of State Grid Ningxia Electric Power Co Ltd
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NINGBO LIGONG ONLINE MONITORING TECHNOLOGY Co Ltd
Electric Power Research Institute of State Grid Ningxia Electric Power Co Ltd
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Abstract

The invention provides a testing and calibrating device for a gas-dissolved-in-transformer-oil online monitoring system. The testing and calibrating device comprises a shell, a control panel and a power supply, wherein an oil passage part and a gas passage part are arranged in the shell, the oil passage part comprises a main tank, a buffer unit, a waste liquid box, a heating unit and a circulating unit, the gas passage part comprises a gas circulating unit, a quantifying unit and flow-limiting valves, and the shell is provided with an oil inlet and an oil outlet used for oil chromatography on-line detection, a sampling port, an oil discharge outlet and a standard gas inlet. According to the testing and calibrating device provided by the invention, the concentration of a target oil sample is controlled by adding a certain amount of high-concentration multi-component mixed gas into a blank oil sample during preparation of a standard oil sample; then gas dissolved in transformer oil is removed through continuous blowing of high-purity air; the concentration of a desired standard oil sample is controlled by changing concentrations of components in the mixed gas and quantified sample introduction frequency. With the device provided by the invention, preparation time for a single standard oil sample is no more than 2 h, and the concentration of the oil sample maintains stable in no less than 72 h.

Description

Test calibration device for Gases Dissolved in Transformer Oil on-line monitoring system
Technical field
The present invention relates to a kind of test calibration device, more particularly, to a kind of Gases Dissolved in Transformer Oil on-line monitoring system Test calibration device, the device is mainly applied to Gases Dissolved in Transformer Oil on-line monitoring field.
Background technology
Gases Dissolved in Transformer Oil on-line monitoring method is theoretical based on dissolved gas analysis, and it is directly in transformation Timing on-line monitoring and the fault diagnosis of oil dissolved gas is realized at device scene, not only can grasp the operation shape of transformer in time Condition, finds and follows the tracks of the Hidden fault existing, and can according to expert's device, operating condition be analyzed automatically in time Diagnosis.
Gases Dissolved in Transformer Oil on-Line Monitor Device is widely used to transformer, such as Chinese patent at present A kind of Gases Dissolved in Transformer Oil monitoring device is disclosed, this device includes field monitoring cabinet, backstage in cn202141720u Monitoring device and circulating pump, field monitoring cabinet is by gas and oil separating plant, gas-detecting device, carrier gas bottle and electrical control equipment group Become, gas and oil separating plant, gas-detecting device and electrical control equipment are connected with each other, gas and oil separating plant passes through circulating pump and change Depressor fuel tank is connected, and carrier gas bottle is connected with gas-detecting device, and gas-detecting device passes through network connection with background monitoring equipment. Do not affect transformer using this device detection process normally to run, can powered installation and debugging and replacing part.
A kind of device for testing carbon dioxide gas in transformer oil is disclosed, this device in Chinese patent cn201945530u It is merged into a road by two air inlet pipe and enters detection bottom of bottle portion after drying tube, detection bottle uses rubber stopper seal, rubber stopper In be inserted with a quartz crystal sensor and escape pipe, quartz crystal sensor is connected with oscillating circuit, and oscillating circuit is by direct current Power drives are simultaneously connected with frequency counter, constitute a complete sensing detection loop.But it is surveyed in prior art The accuracy of data and the offline chromatograph in laboratory the contrast of then data there is a certain degree of difference, be current with regard to its reason On-Line Monitor Device all can not effectively realize the on-line proving function of chromatogram.As analysis measurement instrument, its detection means is in day Often all there is a certain degree of drift in running, and this drift cannot be revised in time and result in on-Line Monitor Device fortune After row certain time surveyed data with laboratory offline chromatograph institute then data has differences.It is therefore desirable to filling to on-line monitoring Put the research carrying out scaling scheme.
Content of the invention
The present invention is to be only capable of carrying out, with offline mode, the technical problem that configures, calibrate to solve on-line chromatograph system, and A kind of test calibration device for Gases Dissolved in Transformer Oil on-Line Monitor Device proposing
The test calibration device of the present invention solves above-mentioned technical problem by the following technical programs: this device include shell, Control panel, power supply composition;Inside the shell is provided with oil circuit part and air path part;Oil circuit part include main fuel tank, buffer unit, Exhausted bath box, heater, oil circulation device;Main fuel tank is connected with oil circulation device by magnetic valve, oil circulation device and heating Device connects, and heater is connected with buffer unit;Buffer unit is connected with main fuel tank top by magnetic valve;Exhausted bath box passes through electricity Magnet valve is connected with buffer unit, air respectively;It is provided with liquid level sensor and pressure sensor in buffer unit and exhausted bath box;Gas Road part includes gas EGR, proportioning device and flow-limiting valve;Flow-limiting valve is connected by pipeline with proportioning device, proportioning device It is connected with buffer unit, exhausted bath box and gas EGR respectively by magnetic valve;Shell is provided with oil chromatography on-line checking and enters Oil-out, sample tap, fuel outlet and Standard Gases import;Wherein oil chromatography on-line checking oil inlet and outlet and sample tap pass through electromagnetism Valve is connected with main fuel tank, and fuel outlet is connected with exhausted bath box by magnetic valve, and Standard Gases import is connected with flow-limiting valve by magnetic valve.
In a preferred embodiment, the top of main fuel tank is arc roof construction.
In another embodiment, the inside of heater adds heating rod, passes equipped with RTD inside heater Sensor.
In another embodiment, the inside of buffer unit adds separator piston, liquid level sensor and pressure sensing Device.
The test calibration device for Gases Dissolved in Transformer Oil on-Line Monitor Device of the present invention can make in standard oil Blank oil sample is adopted to add a certain amount of high concentration multicomponent mixed gas in the configuration of sample, thus the concentration of control targe oil sample; And then continue Purge methods to remove oil dissolved gas using high pure air.In addition can be by changing mixture gas component concentration And quantitative sample injection number of times is controlling the concentration of required standard oil sample.Using the test calibration device of the present invention, single standard oil The setup time of sample is not more than 2 hours;The time that oil sample concentration keeps stable is not less than 72 hours.
Brief description
Fig. 1 is the outside knot of the test calibration device for Gases Dissolved in Transformer Oil on-Line Monitor Device of the present invention Structure schematic diagram;
Fig. 2 is the inside the shell of the test calibration device for Gases Dissolved in Transformer Oil on-Line Monitor Device of the present invention Oil circuit and gas circuit part-structure schematic diagram.
In figure reference is respectively as follows: 1. control panels, 2. power supply, 3. exhausted bath box, 4. heater, 5. oil circulation dress Put, 6. proportioning device, 7,8. flow-limiting valve, 9. waste liquid outlet, 10. evacuation port, 11. main fuel tanks, 12. buffer units, 13 standard oils Sample exports, 14. standard fuel tank inlets, 15. Standard Gases entrances, 16 purgative gas entrances.17th, 18. liquid level sensor, 19. pressure pass Sensor, 20 gas EGRs.
Specific embodiment
In order that those skilled in the art are more clearly understood that technical scheme, below in conjunction with the accompanying drawings and specifically real The technical scheme applying the test calibration device to the present invention for Gases Dissolved in Transformer Oil on-Line Monitor Device for the example enters one Step explanation.
As shown in figure 1, the test calibration device bag for Gases Dissolved in Transformer Oil on-Line Monitor Device of the present invention Include shell, control panel 1 and power supply 2, control panel 1 is placed in housing exterior, power supply 2 also is located at housing exterior.
Wherein, it is provided with oil circuit part and air path part in inside the shell.
As shown in Fig. 2 oil circuit part is provided with main fuel tank 11, buffer unit 12, exhausted bath box 3, oil circulation device 5 and heating Device 4.Air path part includes proportioning device 6 and flow-limiting valve 7,8.
Shell is provided with oil chromatography on-line checking oil inlet and outlet, sample tap, fuel outlet and Standard Gases import.
Wherein oil circuit part is provided with main fuel tank 11, buffer unit 12, exhausted bath box 3, oil circulation device 5 and heater 4. Wherein, the top of main fuel tank is preferably arc roof construction, to ensure that filling gas can exclude fuel tank space completely.
Main fuel tank 11 is connected with oil circulation device 5 by magnetic valve v10, and oil circulation device 5 is connected with heater 4, plus Thermal 4 is connected with buffer unit 12.
Buffer unit 12 is passed through magnetic valve v10 and is connected with main fuel tank 11 top.Buffer unit 12 makes oil circuit unimpeded, not because of stream Amount leads to greatly block.
Preferably add heating rod inside heater, inside heater, be preferably equipped with platinum sensor.
Separator piston, liquid level sensor and pressure sensor is preferably added inside buffer unit.By using liquid Level sensor and pressure sensor, induction installation inside liquid level height and pressure size can change in time, make device automatic Adjustment oil circuit buffering and turnover.
Exhausted bath box 3 is connected with buffer unit, air respectively by magnetic valve v14, v13.In buffer unit 12 and exhausted bath box 3 It is provided with liquid level sensor 17,18, in buffer unit 12, be provided with pressure sensor 19.Exhausted bath box 3 reclaims using fluid afterwards, protects Retaining ring border is not contaminated.
Air path part includes proportioning device 6 and flow-limiting valve 7,8.Flow-limiting valve 7,8 is connected by pipeline with proportioning device 6, fixed Amount device 6 is connected with buffer unit 12 and exhausted bath box 3 respectively by magnetic valve v8, v11.
In addition, oil chromatography on-line checking oil inlet and outlet, sample tap, fuel outlet and Standard Gases import are additionally provided with shell. Wherein oil chromatography on-line checking oil inlet and outlet is connected with main fuel tank 11 by magnetic valve with sample tap, fuel outlet pass through magnetic valve with Exhausted bath box connects, and Standard Gases import is connected with flow-limiting valve 7 by magnetic valve v3.Above-mentioned air path part structure and its air inlet are permissible Real-time detection simultaneously regulates and controls the high concentration multicomponent mixed gas adding in blank oil sample.
Briefly describe below this device enforcement the course of work:
Access spare transformer oil in oil chromatography on-Line Monitor Device oil-in, open v2, v6, v10 valve, open oil and follow Loop device, after oil circulation normal operation, opens v11, v13 valve, after device liquid level to be buffered reaches, closes v2, v11, v13 Valve.
Open v3, v8, v13 valve, open high standard exhaust switch valve and pressure-reducing valve, rinse interior residual in proportioning device Gas, closed v3, v8, v13 valve after 30 seconds, closed high standard exhaust switch valve and pressure-reducing valve.
Open v5, v7 valve, close v6 valve, when gas mixing adds oil sample in quantity tube after 1 minute, open v6 valve Door, closes v5, v7 valve.
Start oil sample heating, tank temperature to be calibrated has been stablized when 50 ± 2 DEG C.Treat that warm-up time has reached 1 hour, can open Dynamic oil chromatography on-Line Monitor Device demarcates flow process.
After once demarcation flow process terminates, change high concentration multicomponent mixed gas, repeat aerating flow process and demarcate oil to improve Case gas concentration, is again started up oil chromatography on-Line Monitor Device after fuel tank is stable and demarcates flow process.
After demarcation flow process terminates, open cleaning gas cylinder on/off valve, pressure-reducing valve, open v4, v5, v10, v11, v13 valve, press Oil sample in certain flow purging demarcation fuel tank and buffer oil tank is to reduce gas concentration in oil sample.
After 1 hour, close v4, v5, v10, v11, v13 valve, close cleaning gas cylinder on/off valve, pressure-reducing valve, demarcate flow process After end or when exhausted bath box liquid level reaches, fuel outlet accesses empty oil drum, opens cleaning gas cylinder on/off valve, pressure-reducing valve, open v4, V8, v14, liquid case hydraulic pressure is entered after sky oil drum, closes v4, v8, v14.Close cleaning gas cylinder on/off valve, pressure-reducing valve.
The test calibration device for Gases Dissolved in Transformer Oil on-Line Monitor Device of the present invention can be in standard oil Blank oil sample is adopted to add a certain amount of high concentration multicomponent mixed gas in the configuration of sample, thus the concentration of control targe oil sample; And then continue Purge methods to remove oil dissolved gas using high pure air.In addition can be by changing mixture gas component concentration And quantitative sample injection number of times is controlling the concentration of required standard oil sample.Using the test calibration device of the present invention, single standard oil The setup time of sample is not more than 2 hours;The time that oil sample concentration keeps stable is not less than 72 hours.
Above specific embodiment be only used for describe the present invention for Gases Dissolved in Transformer Oil on-Line Monitor Device Test calibration device technical scheme, be not used in the restriction present invention, those skilled in the art are without departing from the scope of the present invention Interior, various modifications and combination can be obtained, therefore protection scope of the present invention is defined by claims.

Claims (5)

1. a kind of test calibration device for Gases Dissolved in Transformer Oil on-Line Monitor Device, including shell, control panel, Power supply it is characterised in that
Described inside the shell is provided with oil circuit part and air path part;
Described oil circuit part includes main fuel tank, buffer unit, exhausted bath box, heater and oil circulation device;
Described main fuel tank is connected with described oil circulation device by magnetic valve, and described oil circulation device is with described heater even Connect, described heater is connected with described buffer unit;
Described buffer unit is connected with described main fuel tank top by magnetic valve;
Described exhausted bath box is connected with buffer unit, air respectively by magnetic valve;
Described air path part includes gas EGR, proportioning device and flow-limiting valve;
Described flow-limiting valve is connected by pipeline with described proportioning device, described proportioning device pass through magnetic valve respectively with described buffering Device, described exhausted bath box and described gas EGR are connected;
Oil chromatography on-line checking oil inlet and outlet, sample tap, fuel outlet and Standard Gases import are additionally provided with described shell;Wherein, Described oil chromatography on-line checking oil inlet and outlet is connected with described main fuel tank by magnetic valve with described sample tap, and described fuel outlet leads to Cross magnetic valve to be connected with described exhausted bath box, described Standard Gases import is connected with described flow-limiting valve by magnetic valve.
2. test calibration device according to claim 1 it is characterised in that: the top of described main fuel tank be arc roof construction.
3. test calibration device according to claim 1 it is characterised in that: add heating inside described heater Rod.
4. test calibration device according to claim 1 it is characterised in that: inside described heater equipped with RTD pass Sensor.
5. test calibration device according to claim 1 it is characterised in that: add inside described buffer unit isolation live Plug, liquid level sensor and pressure sensor.
CN201210135338.9A 2012-05-04 2012-05-04 Testing and calibrating device for gas-dissolved-in-transformer-oil online monitoring system Active CN103383377B (en)

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104090072B (en) * 2014-07-03 2016-04-20 中国人民解放军后勤工程学院 A kind of gas concentration detector caliberating device
CN105675359A (en) * 2014-11-20 2016-06-15 上海上计群力分析仪器有限公司 Transformer oil standard oil preparation device and preparation method
CN104880538B (en) * 2015-05-30 2017-01-18 国家电网公司 Device and method for on-site inspection of online monitor for dissolved gas in transformer oil
CN105510104B (en) * 2016-02-05 2019-08-13 毛灿松 The variable online separator of amount of gas evolved gases dissolved in insulation oil and wall-mounted analysis system
CN105608969B (en) * 2016-02-24 2017-03-08 国网山东省电力公司 Prepared by analogue transformer gas relay device and its sample gas, acquisition method
CN105675732B (en) * 2016-02-24 2018-05-11 国网技术学院 Transformer online gc calibration equipment and method
CN107389816B (en) * 2017-07-13 2020-04-07 国网四川省电力公司电力科学研究院 Automatic calibration device for detection system of online monitoring device for dissolved gas in transformer oil

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WO2007115807A1 (en) * 2006-04-07 2007-10-18 Kelman Limited Apparatus for performing dissolved gas analysis
CN101598642A (en) * 2009-03-21 2009-12-09 山东中惠仪器有限公司 Standard oil sample preparation device for transformer oil
CN201945530U (en) * 2011-01-18 2011-08-24 长沙理工大学 Device for testing carbon dioxide gas in transformer oil
CN201965045U (en) * 2010-12-16 2011-09-07 河南省中分仪器有限公司 Preparation device for standard oil sample of dissolved gas in transformer oil

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998036275A1 (en) * 1997-02-14 1998-08-20 Raychem Corporation Apparatus for extracting a gas from a liquid and delivering the gas to a collection station
WO2007115807A1 (en) * 2006-04-07 2007-10-18 Kelman Limited Apparatus for performing dissolved gas analysis
CN101598642A (en) * 2009-03-21 2009-12-09 山东中惠仪器有限公司 Standard oil sample preparation device for transformer oil
CN201965045U (en) * 2010-12-16 2011-09-07 河南省中分仪器有限公司 Preparation device for standard oil sample of dissolved gas in transformer oil
CN201945530U (en) * 2011-01-18 2011-08-24 长沙理工大学 Device for testing carbon dioxide gas in transformer oil

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CN103383377A8 (en) 2016-10-12

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Correct: Electric Power Institute of Science, Ningxia Electric Power Co., Ltd.

False: Ningxia Institute of Electric Power Sciences

Number: 45

Volume: 29

CI02 Correction of invention patent application

Correction item: First applicant

Correct: Electric Power Institute of Science, Ningxia Electric Power Co., Ltd.

False: Ningxia Institute of Electric Power Sciences

Number: 45

Page: The title page

Volume: 29

ERR Gazette correction
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CB02 Change of applicant information

Address after: The Yellow River East Road, Jinfeng District, Yinchuan city 750002 the Ningxia Hui Autonomous Region 716

Applicant after: Electric Power Research Institute, State Grid Ningxia Electric Power Company

Applicant after: Ningbo Ligong Online Monitoring Technology Co., Ltd.

Address before: The Yellow River East Road, Jinfeng District, Yinchuan city 750002 the Ningxia Hui Autonomous Region 716

Applicant before: Electric Power Institute of Science, Ningxia Electric Power Co., Ltd.

Applicant before: Ningbo Ligong Online Monitoring Technology Co., Ltd.

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