CN102371085B - For the vacuum oil air separation of transformer online monitoring - Google Patents
For the vacuum oil air separation of transformer online monitoring Download PDFInfo
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- CN102371085B CN102371085B CN201010253294.0A CN201010253294A CN102371085B CN 102371085 B CN102371085 B CN 102371085B CN 201010253294 A CN201010253294 A CN 201010253294A CN 102371085 B CN102371085 B CN 102371085B
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Abstract
The invention provides a kind of vacuum oil air separation for transformer online monitoring, comprising: the Oil-gas Separation room be connected with transformer body oil and gas detection cell, the vacuum extractor for vacuumizing described Oil-gas Separation room, the supersonic generator being arranged at described Oil-gas Separation room and the cold-trap be connected between described Oil-gas Separation room and described gas detection cell.Vacuum oil air separation oil-collecting circulating sampling of the present invention, vacuum ultrasonic are degassed, cold-trap in one, thoroughly avoid the pollution of oil gas to chromatographic column, really realize system non-maintaining, have the advantages such as cost is low, life-span length, good stability, successful is higher than traditional degassing mode.
Description
Technical field
The present invention relates to transformer online monitoring technology, relate in particular to a kind of vacuum oil air separation for chromatography online monitoring system for transformer oil.
Background technology
At present, transformer oil chromatographic on-line monitoring is used widely in power industry.First this monitoring pattern must realize effectively departing to the failure gas be dissolved in transformer oil, then the failure gas separated is carried out chromatography as sample gas.Traditional degassed mode has: the method such as membrane equilibrium is degassed, it is degassed to vibrate, vacuum outgas.Membrane equilibrium degassing time is long, degassing efficiency is low; Vibrating degassed is not exclusively degassed under certain constant temperature, and the time is short, efficiency is low, poor repeatability, is subject to the impact of the conditions such as temperature, pressure, concentration; The vacuum outgas time is short, efficiency is high, but the degassed vacuum of pure vacuum not easily ensures by the impact of vacuum plant complexity, influential system stability.
Through finding the retrieval of prior art, in the Chinese utility model patent description that number of patent application is 98241936.8, Authorization Notice No. is CN2347169, describe one " Chromatographic Analysis of Transformer oil Full-automatic degassing thermostat "; One " self adaptation oil chromatography vacuum degasser " is described in the Chinese utility model patent description that number of patent application is 200920075510.X, Authorization Notice No. is CN201454167.U.Degassing mode described in the middle of above-mentioned documents does not all carry out post processing to the failure gas separated, inevitably the oil vapour pollution problem of laboratory chromatographic technology is brought in on-line monitoring system, on-line monitoring system good stability, life-span length, non-maintaining technical requirement cannot be met.
Summary of the invention
The object of the invention is to the defect for prior art, the vacuum oil air separation for transformer online monitoring that a kind of cost is low, life-span length, good stability, efficiency are high is provided.
For solving the problems of the technologies described above, present invention employs following technical scheme: design a kind of vacuum oil air separation for transformer online monitoring, comprise: the Oil-gas Separation room be connected with transformer body oil and gas detection cell, for the vacuum extractor vacuumized described Oil-gas Separation room, the supersonic generator being arranged at described Oil-gas Separation room and the cold-trap be connected between described Oil-gas Separation room and described gas detection cell.
Described cold-trap includes condenser and is arranged on the radiating subassembly of this outside condenser, described condenser inside is provided with condensation chamber and cooling assembly, described condensation chamber is connected by the separated gas outlet of air inlet with described Oil-gas Separation room, and this condensation chamber is connected with described gas detection cell by gas outlet.Described condensation chamber also realizes unit by vacuum orifice with condensation chamber vacuum and is connected, and is connected with condensation chamber compress cell by boost port.Air inlet electromagnetic valve is provided with between described air inlet and described separated gas outlet, magnetic valve of giving vent to anger is provided with between described gas outlet and described gas detection cell, be provided with boost electromagnetic valve between described boost port and described condensation chamber compress cell, described vacuum orifice and described condensation chamber vacuum realize being provided with between unit vacuumizing magnetic valve.The CKD through type two-way valve that described magnetic valve all can adopt Japanese Xi Kaili company to produce.Described condensation chamber vacuum realizes unit can adopt diaphragm-type vacuum pump, the KNF diaphragm-type vacuum pump that such as German Kai Enfubeng industry group company produces.Described condensation chamber compress cell can inject High Purity Nitrogen in condensation chamber, so that oil gas analysis is sampled smoothly.
Described cooling assembly includes temperature sensor, semiconductor chilling plate, heat-insulation layer and singlechip controller.Described radiating subassembly includes fin and fan.Described semiconductor chilling plate can be two groups of single crystal semiconductor refrigerators, and its size can be 40*40mm; Described heat-insulation layer can be made up of thermal insulation foaming agent and stainless steel casing.
The wall body of described Oil-gas Separation room is also provided with Oil-temperature control unit, and this Oil-temperature control unit includes heating rod, temperature sensor and temperature controller.Described heating rod can adopt the flatiron thermal resistance of 20W, and described temperature sensor can adopt RTD (PT100) temperature sensor, the TTM-1 temperature controller that described temperature controller can adopt Japanese Dong Bang company to produce.
Described supersonic generator is fixed on the bottom of described Oil-gas Separation room.This supersonic generator can adopt frequency sweep circuit to carry out the ultrasonic transducer controlled, and its frequency can be 40kHz.
The oil inlet end of described Oil-gas Separation room is provided with oil pump and inlet valve, and oil revolving end is provided with oil return valve; The inside of this Oil-gas Separation room has grease chamber and air chamber, forms pasta conical vacuum space between described grease chamber and air chamber, and to prevent oil from entering cold-trap because of device inclined, described air chamber is connected with described cold-trap by separated gas outlet.
The described vacuum extractor for vacuumizing Oil-gas Separation room can directly seal the stepper motor be arranged on Oil-gas Separation room, and this stepper motor can be the fixing shaft type bipolar stepping motor that Single-chip Controlling is run.
Oil-collecting circulating sampling of the present invention, vacuum ultrasonic are degassed, cold-trap in one, under rough vacuum condition, break and realize the disengaging of failure gas in oil in the dissolved gas hole formed in the solution by ultrasonic wave, and adopt cold-trap structure, under uniform temperature condition, the dissolved gas spun off is carried out contraction cooling, the C3 of condensation oil dissolved gas and above polymeric carbon chain component, again gaseous constituent is analyzed, thoroughly avoid oil gas to the pollution of chromatographic column, really realize system non-maintaining.The present invention has the advantages such as cost is low, life-span length, good stability, and successful is higher than traditional degassing mode.
Accompanying drawing explanation
Fig. 1 is structural principle schematic diagram of the present invention.
Fig. 2 is the internal structure schematic diagram of Oil-gas Separation room.
Fig. 3 is the structural principle schematic diagram of Oil-temperature control unit.
Fig. 4 is the stereogram of cold-trap.
Fig. 5 is the transverse sectional view of cold-trap shown in Fig. 4.
Fig. 6 is that the longitudinal direction of cold-trap shown in Fig. 4 partly cuts open figure.
Detailed description of the invention
As shown in Figure 1, a kind of vacuum oil air separation of the present invention includes Oil-gas Separation room 1, stepper motor 2, Oil-temperature control unit 3, supersonic generator 4, cold-trap 5 etc., cold-trap 5 is connected to Oil-gas Separation room 1 respectively by admission line 16, gas detection cell 9 is connected to by outlet pipe 17, be connected to condensation chamber compress cell 10 by pressure pipeline 18, and be connected to condensation chamber vacuum by vacuum lead 19 and realize unit 7.
See Fig. 2, the inside of Oil-gas Separation room 1 has grease chamber 110 and air chamber 111, be formed in round table-like pasta conical vacuum space 112 between grease chamber 110 and air chamber 111, to prevent from making oil enter cold-trap 5 because of device inclined, air chamber 111 is connected with cold-trap 5 by separated gas outlet 113.Grease chamber 110 is connected with transformer body grease chamber 8 with oil returning tube 12 by inflow pipeline 11, forms closed circuit oil circulating system, and wherein inflow pipeline 11 and oil returning tube 12 can adopt Φ 6MM copper tube.Grease chamber 110 is also connected with stepper motor 2 by steam vent 116, stepper motor 2 directly seals the top being arranged on Oil-gas Separation room 1 by workpiece, for vacuumizing Oil-gas Separation room 1, this stepper motor 2 adopts fixing shaft type bipolar stepping motor, by certainly designing piston piece, run by Single-chip Controlling.Inflow pipeline 11 is provided with oil pump 13 and inlet valve 14, and oil returning tube 12 is provided with oil return valve 15.Oil pump 13 is connected with the oil-in 114 of grease chamber 110 by inlet valve 14, and oil return valve 15 is directly connected in the oil-out 115 of grease chamber 110, and oil pump 13, oil return valve 15 are connected with transformer body grease chamber 8.
Supersonic generator 4 is fixed on the bottom of Oil-gas Separation room 1, is mainly used to produce ultrasonic wave.This supersonic generator 4 is adopt frequency sweep circuit to carry out the ultrasonic transducer controlled, and its frequency is 40kHz frequency.
See Fig. 3, the wall body that Oil-temperature control unit 3 is installed on Oil-gas Separation room 1 is inner, includes heating rod 31, temperature sensor 32 and temperature controller 33 etc.Described heating rod 31 can adopt the flatiron thermal resistance of 20W, and described temperature sensor 32 can adopt RTD (PT100) temperature sensor, the TTM-1 temperature controller that described temperature controller 33 can adopt Japanese Dong Bang company to produce.
See Fig. 1, Fig. 4 to Fig. 6, cold-trap 5 includes condenser 55 and the fin 56 be arranged on outside this condenser 55 and fan 57, condenser 55 is a stainless steel workpiece, its inside is provided with condensation chamber 551 and cooling assembly 6, condensation chamber 55 is connected with the separated gas outlet 113 of Oil-gas Separation room 1 by air inlet 552, be connected with described gas detection cell 9 by gas outlet 553, realize unit 7 by vacuum orifice 554 and condensation chamber vacuum to be connected, be connected with condensation chamber compress cell 10 by boost port 555.One end that condensation chamber vacuum realizes unit 7 is connected to condensation chamber 55, and the other end is communicated with outside atmosphere to be exhausted.
Admission line 16 between described air inlet 552 and separated gas outlet 113 is provided with air inlet electromagnetic valve 51, outlet pipe 17 between gas outlet 553 and gas detection cell 9 is provided with magnetic valve 52 of giving vent to anger, pressure pipeline 18 between boost port 555 and condensation chamber compress cell 10 is provided with boost electromagnetic valve 53, and vacuum orifice 554 and the condensation chamber vacuum vacuum lead 19 realized between unit 7 is provided with and vacuumizes magnetic valve 54.The CKD through type two-way valve that described magnetic valve 51,52,53,54 all can adopt Japanese Xi Kaili company to produce.Described condensation chamber vacuum realizes unit 7 can adopt diaphragm-type vacuum pump, the KNF diaphragm-type vacuum pump that such as German Kai Enfubeng industry group company produces.The vacuum of cold-trap 5 realizes by condensation chamber vacuum the confined space that unit 7 and magnetic valve 51,52,53,54 formed and realizes.Described condensation chamber compress cell 10 can inject High Purity Nitrogen in condensation chamber 551, thus by the gas press-in gas detection cell 9 in condensation chamber 551, so that oil gas analysis is sampled smoothly.Admission line 16, outlet pipe 17, pressure pipeline 18 and vacuum lead 19 all adopt Φ 2MM import stainless steel.
See Fig. 6, cooling assembly 6 includes temperature sensor 61, semiconductor chilling plate 62, heat-insulation layer 63 and singlechip controller 64.Wherein, semiconductor chilling plate 62 is the single crystal semiconductor refrigerator of two groups of 65W, and it is of a size of 40*40mm; Heat-insulation layer 63 is made up of thermal insulation foaming agent and stainless steel casing.Technological process is: be sampled as example with 10 o'clock sharps: magnetic valve 51,52,53,54 is in closed condition.
9:00, opens inlet valve 14 and oil return valve 15, starts oil pump 13.
9:40, closes inlet valve 14 and oil return valve 15, stops oil pump 13, starts stepper motor 2 simultaneously and vacuumizes, start supersonic generator 4.
9:45, opens and vacuumizes magnetic valve 54, and startup condensation chamber vacuum realizes unit 7 (vavuum pump) and vacuumizes.
9:50, closes and vacuumizes magnetic valve 54, close down condensation chamber vacuum and realize unit 7, starts cold-trap 5 simultaneously and freezes.
9:55, closes down supersonic generator 4.
9:56, opens air inlet electromagnetic valve 51, start stepper motor 2 is counter be pushed into 80% of volume of finding time after close down stepper motor 2, close air inlet electromagnetic valve 51; Startup stepper motor 2 is also counter is pushed into raw bits, and close down stepper motor 2, oily degasification process terminates.
10:00, starts oil gas sampling analysis flow process.
The present invention can circulate for realizing oil under mode of operation-vacuumize at nobody--degassed-condensation-sampling analysis flow process.By simple structure and flow scheme design, greatly reduce the loss of sample gas, improve accuracy of detection.The use of cold-trap achieves the non-maintaining of this device and even whole detection system.
Finally it should be noted that, above-described is only the preferred embodiment of the present invention, and concrete model, parameter, implementation step and operating process in the middle of embodiment can not be interpreted as limiting the scope of the invention.For the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (7)
1., for the vacuum oil air separation of transformer online monitoring, comprising:
The Oil-gas Separation room be connected with transformer body oil and gas detection cell;
For the vacuum extractor vacuumized described Oil-gas Separation room;
It is characterized in that, this vacuum oil air separation further comprises the supersonic generator being arranged at described Oil-gas Separation room and the cold-trap be connected between described Oil-gas Separation room and described gas detection cell;
Described cold-trap includes condenser and is arranged on the radiating subassembly of this outside condenser, and described condenser inside is provided with condensation chamber and cooling assembly;
Described condensation chamber is connected by the separated gas outlet of air inlet with described Oil-gas Separation room, is connected, realizes unit be connected by vacuum orifice with condensation chamber vacuum, be connected by boost port with condensation chamber compress cell by gas outlet with described gas detection cell.
2. vacuum oil air separation according to claim 1, it is characterized in that: between described air inlet and described separated gas outlet, be provided with air inlet electromagnetic valve, magnetic valve of giving vent to anger is provided with between described gas outlet and described gas detection cell, be provided with boost electromagnetic valve between described boost port and described condensation chamber compress cell, described vacuum orifice and described condensation chamber vacuum realize being provided with between unit vacuumizing magnetic valve.
3. vacuum oil air separation according to claim 1, is characterized in that: described cooling assembly includes temperature sensor, semiconductor chilling plate, heat-insulation layer and singlechip controller.
4. vacuum oil air separation according to claim 1, is characterized in that: described radiating subassembly includes fin and fan.
5. vacuum oil air separation according to claim 1, is characterized in that: the wall body of described Oil-gas Separation room is also provided with Oil-temperature control unit, and this Oil-temperature control unit includes heating rod, temperature sensor and temperature controller.
6. vacuum oil air separation according to claim 1, is characterized in that: described supersonic generator is fixed on the bottom of described Oil-gas Separation room.
7. vacuum oil air separation according to claim 1, is characterized in that: the oil inlet end of described Oil-gas Separation room is provided with oil pump and inlet valve, and oil revolving end is provided with oil return valve; The inside of this Oil-gas Separation room has grease chamber and air chamber, and form pasta conical vacuum space between described grease chamber and air chamber, described air chamber is connected with described cold-trap by separated gas outlet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010253294.0A CN102371085B (en) | 2010-08-13 | 2010-08-13 | For the vacuum oil air separation of transformer online monitoring |
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| CN201010253294.0A CN102371085B (en) | 2010-08-13 | 2010-08-13 | For the vacuum oil air separation of transformer online monitoring |
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| CN102371085A CN102371085A (en) | 2012-03-14 |
| CN102371085B true CN102371085B (en) | 2016-01-20 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103357198A (en) * | 2012-04-06 | 2013-10-23 | 天津市艾佰恩机电设备有限公司 | Passive vacuum oil purifying system |
| CN104122350B (en) * | 2014-08-13 | 2016-01-20 | 国家电网公司 | A kind of cold-trap device for transformer insulated oil gas chromatographic |
| CN104133026B (en) * | 2014-08-13 | 2015-10-28 | 国家电网公司 | The oil product pre-treatment degas method of transformer insulated oil gas chromatographic |
| CN105126391A (en) * | 2015-09-17 | 2015-12-09 | 四川原觉科技有限公司 | Separating device for dissolved gas in oil |
| CN105223277B (en) * | 2015-11-20 | 2017-07-18 | 江苏有能电力自动化有限公司 | A kind of novel transformer oil chromatography on-Line Monitor Device |
| CN105223297B (en) * | 2015-11-20 | 2017-07-18 | 江苏有能电力自动化有限公司 | A kind of special degasser of novel transformer oil chromatography on-Line Monitor Device |
| CN105259260B (en) * | 2015-11-20 | 2017-09-29 | 江苏有能电力自动化有限公司 | A kind of transformer oil chromatographic on-Line Monitor Device with triple valve |
| CN105699150A (en) * | 2016-04-08 | 2016-06-22 | 大连世有电力科技有限公司 | Vacuum ultrasonic degassing device for portable transformer oil photoacoustic spectrum detection device |
| CN107167450A (en) * | 2017-07-17 | 2017-09-15 | 上海禾楷电气科技有限公司 | Gas in Oil of Transformer and micro- water on-line detecting system |
| CN107132103B (en) * | 2017-07-17 | 2023-04-28 | 上海禾楷电气科技有限公司 | Vacuum constant temperature oil-gas separation system |
| CN111855872B (en) * | 2020-06-30 | 2023-05-05 | 国家电网有限公司 | Full-automatic oil-gas quantitative separation device |
| CN116550013A (en) * | 2023-07-10 | 2023-08-08 | 广东电网有限责任公司佛山供电局 | Oil-gas separation device, method and oil chromatographic analysis device |
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| CN201768400U (en) * | 2010-08-13 | 2011-03-23 | 珠海原铭电力设备有限公司 | Vacuum oil-gas separator for on-line monitoring of transformer |
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Patent Citations (2)
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| CN101546646A (en) * | 2009-03-26 | 2009-09-30 | 上海交通大学 | On-line monitoring oil-gas separation device for transformer |
| CN201768400U (en) * | 2010-08-13 | 2011-03-23 | 珠海原铭电力设备有限公司 | Vacuum oil-gas separator for on-line monitoring of transformer |
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Granted publication date: 20160120 Termination date: 20180813 |