CN103412245B - Sulfur hexafluoride electrical equipment hydrogen detector and using method thereof - Google Patents
Sulfur hexafluoride electrical equipment hydrogen detector and using method thereof Download PDFInfo
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- CN103412245B CN103412245B CN201310262220.7A CN201310262220A CN103412245B CN 103412245 B CN103412245 B CN 103412245B CN 201310262220 A CN201310262220 A CN 201310262220A CN 103412245 B CN103412245 B CN 103412245B
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- sensor
- electrical equipment
- sulfur hexafluoride
- gas circuit
- needle valve
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 15
- 239000001257 hydrogen Substances 0.000 title claims abstract description 15
- 229910018503 SF6 Inorganic materials 0.000 title claims abstract description 14
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 229960000909 sulfur hexafluoride Drugs 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims description 12
- 239000007789 gas Substances 0.000 claims abstract description 33
- 230000003750 conditioning effect Effects 0.000 claims abstract description 7
- 238000013500 data storage Methods 0.000 claims abstract description 4
- 210000000352 storage cell Anatomy 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims description 24
- 238000012360 testing method Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000012790 confirmation Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000002161 passivation Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 abstract description 5
- 229920000647 polyepoxide Polymers 0.000 abstract description 5
- 229920000728 polyester Polymers 0.000 abstract description 5
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 abstract description 5
- 229920002554 vinyl polymer Polymers 0.000 abstract description 5
- 238000003745 diagnosis Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000012491 analyte Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- HGAZMNJKRQFZKS-UHFFFAOYSA-N chloroethene;ethenyl acetate Chemical compound ClC=C.CC(=O)OC=C HGAZMNJKRQFZKS-UHFFFAOYSA-N 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002594 sorbent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
The present invention relates to a kind of sulfur hexafluoride electrical equipment hydrogen detector, it is characterized in that: comprise the gas circuit being provided with air intake opening and exhausr port, described gas circuit is provided with a needle valve near air intake opening place, and the gas circuit after this needle valve is provided with H
2sensor and flow sensor; Described H
2sensor is connected with a microprocessor through signal conditioning circuit, A/D converter successively with the output terminal of flow sensor; Described microprocessor is connected with a LCD and data storage cell.The present invention can obtain SF quickly and accurately
6inside electric appliance relates to the initial failure information that polyester vinyl, insulating paper and epoxy resin decompose, for the State Maintenance of fault diagnosis and equipment provides scientific basis.
Description
Technical field
Patent of the present invention relates to electrical equipment detecting instrument, is hydrogen detector and the using method of reflection sulfur hexafluoride electrical equipment internal solids insulating material cracking characteristic.
Background technology
Sulfur hexafluoride (SF
6) gas has excellent chemical stability and electric property, therefore, be widely used in electrical equipment from last century after the eighties, the safety and economic operation for electric system plays good effect.But due to solid insulation material in electrical equipment, manufacture, install, detection means and service procedure etc. also come with some shortcomings, although test by regulatory requirements when product export and input application, but because current detection means is difficult to the insulation defect detecting local, therefore unavoidably some defects are brought into operational outfit, in operation under heat and electric effect, these defects constantly develop, because electric insulation equipment is all sealing in use, the external world is difficult to the fault knowing that the inside occurs in time, thus cause accident, great economic loss and harmful effect is brought to society.Although existing decomposed product detector at present, owing to producing these SO
2, H
2the temperature of S, cannot the hidden danger of early detection cryogenic overheating more than 400 DEG C, although the detection of CO content can reflect the cryogenic overheating of tygon and insulating paper, also owes perfect.By forming and cracking reaction the element of these insulating material, think that hydrogen is the material the most easily produced in various chemical reaction, and hydrogen is not by sorbent, flow expansion is fast.Therefore, this patent instrument energy detection equipment internal fault hidden danger in time, the generation of Accident prevention, to raising SF
6the safety and economic operation of electrical equipment has given play to positive effect.
Summary of the invention
In order to overcome the deficiency of existing product, the object of the present invention is to provide one can obtain SF quickly and accurately
6inside electric appliance relates to the initial failure information that polyester vinyl, insulating paper and epoxy resin decompose, for the State Maintenance of fault diagnosis and equipment provides scientific basis.
The technical solution adopted for the present invention to solve the technical problems is: a kind of sulfur hexafluoride electrical equipment hydrogen detector, it is characterized in that: comprise the gas circuit being provided with air intake opening and exhausr port, described gas circuit is provided with a needle valve near air intake opening place, and the gas circuit after this needle valve is provided with H
2sensor and flow sensor; Described H
2sensor is connected with a microprocessor through signal conditioning circuit, A/D converter successively with the output terminal of flow sensor; Described microprocessor is connected with a LCD and data storage cell.
In an embodiment of the present invention, described microprocessor is also connected with printer.
In an embodiment of the present invention, described microprocessor is also connected with H
2alarm unit and usb circuit.
In an embodiment of the present invention, described gas circuit is provided with an air pump, starts this air pump, clean this detector, ensure described H by after the air filtration in the external world when surveying data and exceeding normal value
2the quick return-to-zero of sensor.
Another object of the present invention is to provide a kind of using method of above-mentioned sulfur hexafluoride electrical equipment hydrogen detector, it is characterized in that, comprises the following steps:
A. open detection instrument power supply, booster air pump cleaning gas circuit, H
2checkout equipment and test item selection is carried out after sensor return-to-zero;
B. confirm that the needle valve of described detector is in closed condition, exhaust collection bag is connected with instrument exhausr port;
C. unload the outlet shrouding of equipment under test vent valve, after one end of an air guide pipe racks filtrator connects corresponding adapter, be connected with the outlet of equipment under test vent valve, the other end of wireway is connected with instrument air intake opening;
D. slowly open tested equipment vent valve, flow regulation to after arranging scope, after rinsing gas circuit one schedule time of passivation, is entered detection, and shows testing result and preserve by conditioning instrumentation needle valve; When detecting H
2during content overproof, this detector inner air path is cleaned, treats H
2after sensor return-to-zero, confirmation of resurveying;
E. detect after terminating, close power switch device, flow regulation needle valve is threaded to closed condition; Equipment vent valve shrouding is restored; Use portable SF
6gas leakage detector is hunted leak, and guarantees good seal;
F. gas in exhaust collection bag is recycled.
In an embodiment of the present invention, described wireway adopts polytetrafluoroethylmaterial material, and the two ends of this wireway have self-styled rapid-acting coupling, and its one end is provided with stainless steel filter.
In an embodiment of the present invention, after the described schedule time, enter detection, and automatic decision endpoint detection.
The invention has the beneficial effects as follows: because the present invention is by the structure to solid insulating materials such as polyester vinyl, insulating paper and epoxy resin, element composition with after cracking reaction carries out lot of experiments research and Site Detection, propose H
2be the characteristic component that polyester vinyl, insulating paper and epoxy resin decompose, current supervision code and instrument all without detection, use this detector can detect H quickly and accurately
2content, the initial failure of Timeliness coverage device interior, thus the generation effectively avoiding accident.This detector not only novel, structure simply, and is tested accurate, quick, easy to use, and its popularizing application prospect is wide.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, this patent is conducted further description.
Fig. 1 is detector structural representation of the present invention.
In figure: 1-air intake opening, 2-needle valve, 3-exhausr port, 4-printer, 5-flow sensor,
6-H2 sensor, 7-power panel, 8-electronic circuit board, 9-air pump, 10-LCD.
Fig. 2 is detector electronics block diagram of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
The detector of the present embodiment comprises the gas circuit being provided with air intake opening and exhausr port, and described gas circuit is provided with a needle valve near air intake opening place, and the gas circuit after this needle valve is provided with H
2sensor and flow sensor; Described H
2sensor is connected with a microprocessor through signal conditioning circuit, A/D converter successively with the output terminal of flow sensor; Described microprocessor is connected with a LCD and data storage cell.
Embodiment:
Refer to accompanying drawing 1, tested SF
6the outlet of electrical equipment vent valve is connected to detector air intake opening 1 by wireway, after the flow that needle valve 2 regulates setting, enters H
2, there is chemical reaction in sensor 6, exports and H
2the corresponding electric signal of concentration, microprocessor and A/D converter is delivered to (in the present embodiment through signal condition unit, this signal condition unit, microprocessor, A/D converter are all arranged on electronic circuit board 8), convert analog signals to digital quantity, logical process, judgement is done by microprocessor, shown the instantaneous value detected by LCD10, and the data detected are stored.Work as H
2concentration when exceeding normal value, MICROCOMPUTER PROCESSING judges to the result detected, and proposes corresponding handling suggestion.The gas detected enters after flow sensor 5 detects flow from electrochemical sensor and discharges through exhausr port 3.
Please refer to Fig. 2, in one embodiment of the invention, described microprocessor is also connected with printer, H
2alarm unit and usb circuit.
Preferably; micro air pump 9 is provided with in the detection gas circuit of the present embodiment; when detecting booster air pump when data exceed normal value; detection system is cleaned by after the air filtration in the external world; the very fast return-to-zero of electrochemical sensor can not only be made; and effectively can protect sensor, improve its accuracy and serviceable life.
The present embodiment is based on to SF
6after the generation rule of the structure of electric insulation device interior, material, failure process Sum decomposition product has done lot of experiments research, H is proposed
2it is the characteristic gas that polyester vinyl, insulating paper and epoxy resin decompose.Instrument of the present invention adopts the process of gas path in Fig. 1, realizes SF
6inside electric appliance initial failure detects, and carries out intelligent comprehensive judgement by fault diagnosis expert system.In addition, the present invention uses chargeable Large Copacity, high-performance lithium battery as power supply, about 2 minutes each detection times, and consumption gas about 400ml, during detection, equipment does not need to have a power failure.This instrument have highly sensitive, good stability, air consumption are few, and can carry out the advantage of Intelligence Diagnosis, it is succeeded in developing, and filled up the blank of China, this detection technique is in international most advanced level.
In the present embodiment, the using method first for the detector with air pump is described as follows:
A. open detection instrument power supply, booster air pump cleaning gas circuit, carries out checkout equipment after sensor return-to-zero and test item is selected.
B. confirm that instrument needle valve is in closed condition, is connected exhaust collection bag with instrument exhausr port.
C. unload the outlet shrouding of equipment under test vent valve, after one end of air guide pipe racks filtrator connects corresponding adapter, be connected with the outlet of equipment vent valve, the other end of wireway is connected with instrument air intake opening.
D. slowly open tested equipment vent valve, flow regulation to after arranging scope, is rinsed passivation gas path pipe after 2 minutes, is entered detection, automatic decision endpoint detection by conditioning instrumentation needle valve, and display testing result is also preserved.In the present embodiment, preheating time when first time is detected is 2 minutes, and the preheating time detected afterwards was 6 seconds.
When detecting H
2during content overproof, reply instrument internal gas circuit is cleaned, after sensor return-to-zero, and confirmation of resurveying.
E. detect after terminating, close power switch device, flow regulation needle valve is threaded to closed condition.Equipment vent valve shrouding is restored; Use portable SF
6gas leakage detector is hunted leak, and guarantees good seal.
F. gas in exhaust collection bag is recycled.
Be noted that the high-quality polytetrafluoroethylmaterial material that the above-mentioned wireway of the present embodiment adopts adsorbability minimum, two ends have self-styled rapid-acting coupling, and its one end is provided with stainless steel filter, solve the absorption of analyte, improve accuracy of detection, be conducive to detecting of initial failure.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (7)
1. a sulfur hexafluoride electrical equipment hydrogen detector, is characterized in that: comprise the gas circuit being provided with air intake opening and exhausr port, and described gas circuit is provided with a needle valve near air intake opening place, and the gas circuit after this needle valve is provided with H
2sensor and flow sensor; Described H
2sensor is connected with a microprocessor through signal conditioning circuit, A/D converter successively with the output terminal of flow sensor; Described microprocessor is connected with a LCD and data storage cell.
2. sulfur hexafluoride electrical equipment hydrogen detector according to claim 1, is characterized in that: described microprocessor is also connected with printer.
3. sulfur hexafluoride electrical equipment hydrogen detector according to claim 1, is characterized in that: described microprocessor is also connected with H
2alarm unit and usb circuit.
4. sulfur hexafluoride electrical equipment hydrogen detector according to claim 1, is characterized in that: described gas circuit is provided with an air pump, starts this air pump, clean air-channel system, make H by after the air filtration in the external world when surveying data and exceeding normal value
2the quick return-to-zero of sensor.
5. a using method for sulfur hexafluoride electrical equipment hydrogen detector as claimed in claim 4, is characterized in that, comprise the following steps:
A. open detection instrument power supply, booster air pump cleaning gas circuit, H
2checkout equipment and test item selection is carried out after sensor return-to-zero;
B. confirm that the needle valve of described detector is in closed condition, exhaust collection bag is connected with instrument exhausr port;
C. unload the outlet shrouding of equipment under test vent valve, after one end of air guide pipe racks filtrator connects corresponding adapter, be connected with the outlet of equipment under test vent valve, the other end of wireway is connected with instrument air intake opening;
D. slowly open tested equipment vent valve, flow regulation to after arranging scope, after rinsing gas circuit one schedule time of passivation, is entered detection, and shows testing result and preserve by conditioning instrumentation needle valve; When detecting H
2during content overproof, this detector inner air path is cleaned, treats H
2after sensor return-to-zero, confirmation of resurveying;
E. detect after terminating, close power switch device, flow regulation needle valve is threaded to closed condition; Equipment vent valve shrouding is restored; Use portable SF
6gas leakage detector is hunted leak, and guarantees good seal;
F. gas in exhaust collection bag is recycled.
6. the using method of sulfur hexafluoride electrical equipment hydrogen detector according to claim 5, it is characterized in that: described wireway adopts polytetrafluoroethylmaterial material, the two ends of this wireway have self-styled rapid-acting coupling, and its one end is provided with stainless steel filter.
7. the using method of sulfur hexafluoride electrical equipment hydrogen detector according to claim 5, is characterized in that: after the described schedule time, enter detection, and automatic decision endpoint detection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310262220.7A CN103412245B (en) | 2013-06-27 | 2013-06-27 | Sulfur hexafluoride electrical equipment hydrogen detector and using method thereof |
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|---|---|---|---|
| CN201310262220.7A CN103412245B (en) | 2013-06-27 | 2013-06-27 | Sulfur hexafluoride electrical equipment hydrogen detector and using method thereof |
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| CN103412245B true CN103412245B (en) | 2016-03-23 |
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| CN104132956A (en) * | 2014-08-18 | 2014-11-05 | 国家电网公司 | Detection system for concentration of mixed insulating gas of electric equipment |
| CN104280558A (en) * | 2014-10-17 | 2015-01-14 | 河南省计量科学研究院 | Calibrating device for exhaled gas alcohol content detector |
| CN105067045B (en) * | 2015-06-03 | 2018-02-16 | 国网山东省电力公司济南供电公司 | Power distribution network high-tension switch cabinet monitoring device |
| CN105572192A (en) * | 2016-01-15 | 2016-05-11 | 国家电网公司 | Temperature compensation method of SF6 electrochemical gas sensor |
| CN108007925A (en) * | 2017-11-16 | 2018-05-08 | 国网福建省电力有限公司泉州供电公司 | SF6Gas decomposition product colorimetric determination instrument |
| CN110971130A (en) * | 2018-09-29 | 2020-04-07 | 中车株洲电力机车研究所有限公司 | Insulation device for high-voltage frequency converter and high-voltage frequency converter |
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| CN201594073U (en) * | 2010-01-14 | 2010-09-29 | 厦门加华电力科技有限公司 | Decomposition product on-line monitoring device of sulfur hexafluoride electrical equipment |
| CN202485717U (en) * | 2012-01-14 | 2012-10-10 | 厦门加华电力科技有限公司 | Sulfur hexafluoride electrical equipment gas comprehensive detector |
| CN202486111U (en) * | 2012-03-28 | 2012-10-10 | 上海华爱色谱分析技术有限公司 | Gas chromatography system for analyzing sulfur hexafluoride decomposed product |
| CN102866182A (en) * | 2011-07-07 | 2013-01-09 | 厦门加华电力科技有限公司 | Carbon monoxide detector for sulfur hexafluoride electric equipment |
| CN202854112U (en) * | 2012-09-14 | 2013-04-03 | 常州宝威电子科技有限公司 | Tester for decomposition products of SF6 (sulfur hexafluoride) gas |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8002957B2 (en) * | 2008-01-02 | 2011-08-23 | General Electric Company | Sensor apparatus for measuring and detecting acetylene and hydrogen dissolved in a fluid |
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Patent Citations (5)
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|---|---|---|---|---|
| CN201594073U (en) * | 2010-01-14 | 2010-09-29 | 厦门加华电力科技有限公司 | Decomposition product on-line monitoring device of sulfur hexafluoride electrical equipment |
| CN102866182A (en) * | 2011-07-07 | 2013-01-09 | 厦门加华电力科技有限公司 | Carbon monoxide detector for sulfur hexafluoride electric equipment |
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Denomination of invention: Hydrogen detector for sulfur hexafluoride electrical equipment and its usage method Effective date of registration: 20231007 Granted publication date: 20160323 Pledgee: Bank of China Limited Xiamen hi tech Park sub branch Pledgor: Xiamen Jiahua Electrical Technology Co.,Ltd. Registration number: Y2023980060154 |