CN103616274B - A kind of pretreatment unit of transformer oil and method - Google Patents
A kind of pretreatment unit of transformer oil and method Download PDFInfo
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- CN103616274B CN103616274B CN201310626712.XA CN201310626712A CN103616274B CN 103616274 B CN103616274 B CN 103616274B CN 201310626712 A CN201310626712 A CN 201310626712A CN 103616274 B CN103616274 B CN 103616274B
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- 238000000034 method Methods 0.000 title claims abstract description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 80
- 238000000926 separation method Methods 0.000 claims abstract description 52
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 40
- 239000002828 fuel tank Substances 0.000 claims abstract description 27
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 238000010926 purge Methods 0.000 claims abstract description 9
- 239000003921 oil Substances 0.000 claims description 168
- 229910000806 Latten Inorganic materials 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 4
- 239000000295 fuel oil Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 5
- 230000007812 deficiency Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 4
- 238000004587 chromatography analysis Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention provides a kind of pretreatment unit and method of transformer oil, device comprises solenoid valve, ball valve, fuel tank, oil cylinder, ebullator, vacuum pump, gas-oil separation room, pressure transducer, stepper motor, air and nitrogen interface, oil-in and oil-out; Oil-in is with fuel tank, be connected by four-way between oil cylinder and ebullator; Oil cylinder is connected respectively with described fuel tank, gas-oil separation room and pressure transducer, and ball valve is located between described fuel tank and described oil cylinder; The piston of oil cylinder is fixedly connected with stepper motor by mechanical hook-up, and piston base connects described oil-out; Gas-oil separation room connects air and nitrogen interface, and connects vacuum pump by solenoid valve.By introducing, vacuum atomizing is degassed, air cleaning, nitrogen purge three kinds of degas methods carry out pre-service to transformer oil in the present invention, the deficiency of the cleaning degasifying effect of various method can be made up, the residual gas dissolved in more efficient wash-out original transformer oil.
Description
Technical field
The present invention relates to a kind of pretreatment unit and method, be specifically related to a kind of pretreatment unit and method of transformer oil.
Background technology
The mensuration of Gases Dissolved in Transformer Oil component concentration is one of very important test item of electric system, is the effective means of judgment device Hidden fault in transformer factory inspection and operational process.Oil chromatography on-line monitoring equipment, as the instrument of Real-Time Monitoring Gases Dissolved in Transformer Oil component concentration, widely uses in China, and the quality of its measurement result directly affects the safe operation of transformer.At present, electric system uses standard oil sample to calibrate oil chromatography on-line monitoring equipment, examine and determine and detect usually.Standard oil sample forms carrying out on pretreated basis configuration to initial samples, and therefore, carry out pre-service to initial samples is a very important flow process in calibration, calibrating and detection experiment.Current preprocessing process mainly utilizes nitrogen to carry out stirring bubbling purge to initial samples, not only inefficiency, and often needs to consume a large amount of nitrogen, causes very large waste.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of pretreatment unit and method of transformer oil, utilize to transformer oil, this device can carry out that atomization final vacuum is degassed, air cleaning and nitrogen purge, automatic acquisition transformer oil blank oil sample, thus the standard oil sample needed for preparation calibration oil chromatography on-Line Monitor Device.
In order to realize foregoing invention object, the present invention takes following technical scheme:
The invention provides a kind of pretreatment unit of transformer oil, described device comprises solenoid valve, ball valve, fuel tank, oil cylinder, ebullator, vacuum pump, gas-oil separation room, pressure transducer, stepper motor, air and nitrogen interface, oil-in and oil-out; Described oil-in is with described fuel tank, be connected by four-way between oil cylinder and ebullator; Described oil cylinder is connected respectively with described fuel tank, gas-oil separation room and pressure transducer, and described ball valve is located between described fuel tank and described oil cylinder; The piston of described oil cylinder is fixedly connected with described stepper motor by mechanical hook-up, and described piston base connects described oil-out; Described gas-oil separation room connects described air and nitrogen interface, and connects described vacuum pump by described solenoid valve.
Described top of oil-tank and bottom are respectively equipped with opening, and the opening at top communicates with outside air, and described fuel tank is by the opening connecting tee A of bottom.
Described oil-in is connected by solenoid valve one end with described four-way, the other end of described four-way connects ebullator by described solenoid valve, two ends connect described fuel tank and oil cylinder respectively by threeway A, threeway B in addition, the other end of described threeway A connects ball valve by solenoid valve, and the other end of described ball valve connects described oil cylinder by threeway B.
Described oil cylinder top and bottom are respectively equipped with opening, and the opening part of top and bottom is respectively equipped with latten(-tin) and piston, and described oil cylinder connects described threeway B by described latten(-tin).
The diameter of described latten(-tin) is 50 ~ 70mm, evenly arranges 10 ~ 100 circular holes, and the diameter of described circular hole is 0.3mm ~ 0.5mm.
Described oil-out is connected by solenoid valve one end with threeway C, and the other two ends of described threeway C connect the piston of described ebullator and described oil cylinder respectively; Described piston adopts hollow to arrange.
Described oil cylinder side top side is provided with opening, described opening connecting tee D, Bonding pressure sensor and the gas-oil separation room respectively, other two ends of described threeway D, solenoid valve is provided with between described threeway D and gas-oil separation room, described gas-oil separation room connects described air and nitrogen interface by threeway E, and all the other one end of described threeway E connect vacuum pump by solenoid valve; Described threeway E and be provided with solenoid valve between air and nitrogen interface.
Described gas-oil separation indoor are provided with liquid level sensor.
The present invention also provides a kind of pretreatment unit of transformer oil that utilizes to carry out pretreated method to transformer oil, said method comprising the steps of:
Step 1: oil-feed;
Described descent of piston, open the solenoid valve between described four-way and threeway A, if there is transformer oil described gas-oil separation indoor, then open solenoid valve between described threeway D and described gas-oil separation room and described threeway E and the solenoid valve between air and nitrogen interface, after bottom described piston arrives oil cylinder, close the above-mentioned solenoid valve opened;
Described descent of piston, open the solenoid valve between described four-way and threeway A, the solenoid valve between described four-way and threeway A is closed after bottom described piston arrives oil cylinder, and the solenoid valve opened between threeway D and described gas-oil separation room and the solenoid valve between described threeway E and vacuum pump; The solenoid valve between threeway D and described gas-oil separation room, solenoid valve between described threeway E and vacuum pump and vacuum pump is closed after reaching vacuum state in oil cylinder, open the solenoid valve between described oil-in and four-way, transformer oil is made to enter described device, the solenoid valve after completing between the described oil-in of closedown and four-way;
Step 2: vacuum atomizing is degassed;
Open the solenoid valve between described four-way and threeway A, described upstroke, to oil cylinder top, closes the solenoid valve between four-way and threeway A; Bottom descent of piston to oil cylinder, open ball valve and the solenoid valve between ball valve and threeway A;
Step 3: when pressure is not less than 5kPa in described oil cylinder, closes ball valve and the solenoid valve between ball valve and threeway A, opens the solenoid valve between threeway D and described gas-oil separation room, solenoid valve between threeway E and vacuum pump and vacuum pump; When pressure in oil cylinder is not higher than 0.1kPa, closes the above-mentioned solenoid valve opened and vacuum pump, open the solenoid valve between ball valve and threeway A;
Step 4: the operation of circulation step 3 is until transless oil in fuel tank, close the solenoid valve between ball valve and threeway A, open the solenoid valve between threeway D and described gas-oil separation room, solenoid valve between threeway E and vacuum pump and vacuum pump, after reaching vacuum state in oil cylinder, close the above-mentioned solenoid valve opened and vacuum pump;
Step 5: air cleaning;
Open described air and solenoid valve and the solenoid valve between threeway E and gas-oil separation room between nitrogen interface and threeway E, make air access to plant, when pressure in oil cylinder reaches 95kPa and is above, close the above-mentioned solenoid valve opened, upstroke until in oil cylinder pressure reach 150kPa and more than, open the solenoid valve between described four-way and ebullator and ebullator, make transformer oil start circulation, after 15 ~ 30 minutes, close ebullator;
Step 6: nitrogen purge;
Open solenoid valve between threeway D and described gas-oil separation room and described air and the solenoid valve between nitrogen interface and threeway E, make nitrogen access to plant, when pressure in oil cylinder reaches 150kPa and is above, close the above-mentioned solenoid valve opened, and open ebullator make transformer oil start circulation, close ebullator after 15 ~ 30 minutes; Complete the pre-service of transformer oil.
Compared with prior art, beneficial effect of the present invention is:
1, by introducing, vacuum atomizing is degassed, air cleaning, nitrogen purge three kinds of degas methods carry out pre-service to transformer oil, can make up the deficiency of the cleaning degasifying effect of various method, the residual gas dissolved in more efficient wash-out original transformer oil;
2, employ the mode that vacuum atomizing is degassed, air cleaning coordinates nitrogen purge, effectively saved the use amount of nitrogen, reduced experimentation cost;
3, can carry out integrated with standard oil sample manufacturing device easily, test standard oil sample can be prepared more quickly;
4, degassed, the air cleaning of vacuum atomizing and nitrogen purge three flow processs repeatedly can be carried out depending on Gas in Oil of Transformer concentration levels, flexibly and easily;
5, judge whether gas-oil separation indoor have transformer oil by the liquid level sensor of the indoor setting of gas-oil separation;
6, the ball valve arranged between threeway A and oil cylinder can regulate the flow velocity of transformer oil to ensure fogging degree;
7, air and nitrogen interface can be entered as air or nitrogen on demand automatically.
Accompanying drawing explanation
Fig. 1 is the pretreatment unit structural drawing of transformer oil;
Wherein, solenoid valve between 1-oil-out and threeway C, solenoid valve between 2-four-way and ebullator, solenoid valve between 3-oil-in and four-way, solenoid valve between 4-threeway A and four-way, solenoid valve between 5-threeway A and ball valve, solenoid valve between 6-threeway D and gas-oil separation room, 7-air and the solenoid valve between nitrogen interface and threeway E, solenoid valve between 8-threeway E and vacuum pump, 9-fuel tank, 10-oil cylinder, 11-ebullator, 12-vacuum pump, 13-gas-oil separation room, 14-pressure transducer, 15-ball valve, 16-stepper motor, 17-threeway A, 18-threeway B, 19-threeway C, 20-threeway D, 21-threeway E, 22-four-way.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As Fig. 1, the invention provides a kind of pretreatment unit of transformer oil, described device comprises solenoid valve, ball valve 15, fuel tank 9, oil cylinder 10, ebullator 11, vacuum pump 12, gas-oil separation room 13, pressure transducer 14, stepper motor 16, air and nitrogen interface, oil-in and oil-out; Described oil-in is with described fuel tank 9, be connected by four-way 22 between oil cylinder 10 and ebullator 11; Described oil cylinder 10 is connected respectively with described fuel tank 9, gas-oil separation room 13 and pressure transducer 14, and described ball valve 15 is located between described fuel tank 9 and described oil cylinder 10; The piston of described oil cylinder 10 is fixedly connected with described stepper motor 16 by mechanical hook-up, and described piston base connects described oil-out; Described gas-oil separation room 13 connects described air and nitrogen interface, and connects described vacuum pump 12 by described solenoid valve.
Described fuel tank 9 top and bottom are respectively equipped with opening, and the opening at top communicates with outside air, and described fuel tank 9 is by the opening connecting tee A17 of bottom.
Described oil-in is connected with one end of described four-way 22 by solenoid valve 3, the other end of described four-way 22 connects ebullator 11 by described solenoid valve 2, two ends connect described fuel tank 9 and oil cylinder 10 respectively by threeway A17, threeway B18 in addition, the other end of described threeway A17 connects ball valve 15 by solenoid valve 5, and the other end of described ball valve 15 connects described oil cylinder 10 by threeway B18.
Described oil cylinder 10 top and bottom are respectively equipped with opening, and the opening part of top and bottom is respectively equipped with latten(-tin) and piston, and described oil cylinder 10 connects described threeway B18 by described latten(-tin).
The diameter of described latten(-tin) is 60mm, evenly arranges 80 circular holes, and the diameter of described circular hole is 0.4mm.
Described oil-out is connected with one end of threeway C19 by solenoid valve 1, and the other two ends of described threeway C19 connect the piston of described ebullator 11 and described oil cylinder 10 respectively; Described piston adopts hollow to arrange.
Described oil cylinder 10 side top side is provided with opening, described opening connecting tee D20, Bonding pressure sensor 14 and the gas-oil separation room 13 respectively, other two ends of described threeway D20, solenoid valve 6 is provided with between described threeway D20 and gas-oil separation room 13, described gas-oil separation room 13 connects described air and nitrogen interface by threeway E21, and all the other one end of described threeway E21 connect vacuum pump 12 by solenoid valve; Described threeway E21 and be provided with solenoid valve 7 between air and nitrogen interface.
Liquid level sensor is provided with in described gas-oil separation room 13.
The present invention also provides a kind of pretreatment unit of transformer oil that utilizes to carry out pretreated method to transformer oil, said method comprising the steps of:
Step 1: oil-feed;
Described descent of piston, open the solenoid valve 4 between described four-way 22 and threeway A17, if have transformer oil in described gas-oil separation room 13, then open solenoid valve 6 between described threeway D20 and described gas-oil separation room 13 and described threeway E21 and the solenoid valve between air and nitrogen interface 7, after bottom described piston arrives oil cylinder 10, close the above-mentioned solenoid valve 6 opened and solenoid valve 7;
Described descent of piston, open the solenoid valve 4 between described four-way 22 and threeway A17, the solenoid valve 4 between described four-way 22 and threeway A17 is closed after bottom described piston arrives oil cylinder 10, and the solenoid valve 6 opened between threeway D20 and described gas-oil separation room 13 and the solenoid valve 8 between described threeway E and vacuum pump 12; The solenoid valve 6 between threeway D20 and described gas-oil separation room 13, solenoid valve 8 between described threeway E21 and vacuum pump 12 and vacuum pump 12 is closed after reaching vacuum state in oil cylinder 10, open the solenoid valve 3 between described oil-in and four-way 22, transformer oil is made to enter described device, the solenoid valve 3 after completing between the described oil-in of closedown and four-way 22;
Step 2: vacuum atomizing is degassed;
Open the solenoid valve 4 between described four-way 22 and threeway A17, described upstroke, to oil cylinder 10 top, closes the solenoid valve 4 between four-way 22 and threeway A17; Bottom descent of piston to oil cylinder 10, open ball valve 15 and the solenoid valve between ball valve 15 and threeway A17 5;
Step 3: when pressure is not less than 5kPa in described oil cylinder 10, close ball valve 15 and the solenoid valve between ball valve 15 and threeway A17 5, open the solenoid valve 6 between threeway D20 and described gas-oil separation room 13, solenoid valve 8 between threeway E21 and vacuum pump 12 and vacuum pump 12; When pressure in oil cylinder 10 is not higher than 0.1kPa, closes above-mentioned solenoid valve 6, solenoid valve 8 and the vacuum pump 12 opened, open the solenoid valve 5 between ball valve 15 and threeway A17;
Step 4: the operation of circulation step 3 is until transless oil in fuel tank 9, close the solenoid valve between ball valve 15 and threeway A17, open the solenoid valve between threeway D20 and described gas-oil separation room 13, solenoid valve between threeway E21 and vacuum pump 12 and vacuum pump 12, after reaching vacuum state in oil cylinder 10, close the above-mentioned solenoid valve opened and vacuum pump 12;
Step 5: air cleaning;
Open described air and solenoid valve 7 and the solenoid valve between threeway E21 and gas-oil separation room 13 6 between nitrogen interface and threeway E21, make air access to plant, when pressure in oil cylinder 10 reaches 95kPa and is above, close the above-mentioned solenoid valve 7 opened and solenoid valve 6, upstroke until in oil cylinder 10 pressure reach 150kPa and more than, open the solenoid valve 2 between described four-way 22 and ebullator 11 and ebullator 11, make transformer oil start circulation, after 20 minutes, close ebullator 11;
Step 6: nitrogen purge;
Open solenoid valve 6 between threeway D20 and described gas-oil separation room 13 and described air and the solenoid valve between nitrogen interface and threeway E21 7, make nitrogen access to plant, when pressure in oil cylinder 10 reaches 150kPa and is above, close the above-mentioned solenoid valve 6 opened and solenoid valve 7, and open ebullator 11 make transformer oil start circulation, close ebullator 11 after 20 minutes; Complete the pre-service of transformer oil.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although with reference to above-described embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or equivalent replacement, and not departing from any amendment of spirit and scope of the invention or equivalent replacement, it all should be encompassed in the middle of right of the present invention.
Claims (6)
1. a pretreatment unit for transformer oil, is characterized in that: described device comprises solenoid valve, ball valve, fuel tank, oil cylinder, ebullator, vacuum pump, gas-oil separation room, pressure transducer, stepper motor, air and nitrogen interface, oil-in and oil-out; Described oil-in is with described fuel tank, be connected by four-way between oil cylinder and ebullator; Described oil cylinder is connected respectively with described fuel tank, gas-oil separation room and pressure transducer, and described ball valve is located between described fuel tank and described oil cylinder; The piston of described oil cylinder is fixedly connected with described stepper motor by mechanical hook-up, and described piston base connects described oil-out; Described gas-oil separation room connects described air and nitrogen interface, and connects described vacuum pump by described solenoid valve;
Described top of oil-tank and bottom are respectively equipped with opening, and the opening at top communicates with outside air, and described fuel tank is by the opening connecting tee A of bottom;
Described oil-in is connected by solenoid valve one end with described four-way, the other end of described four-way connects ebullator by described solenoid valve, two ends connect described fuel tank and oil cylinder respectively by threeway A, threeway B in addition, the other end of described threeway A connects ball valve by solenoid valve, and the other end of described ball valve connects described oil cylinder by threeway B;
Described oil-out is connected by solenoid valve one end with threeway C, and the other two ends of described threeway C connect the piston of described ebullator and described oil cylinder respectively; Described piston adopts hollow to arrange.
2. the pretreatment unit of transformer oil according to claim 1, it is characterized in that: described oil cylinder top and bottom are respectively equipped with opening, the opening part of top and bottom is respectively equipped with latten(-tin) and piston, and described oil cylinder connects described threeway B by described latten(-tin).
3. the pretreatment unit of transformer oil according to claim 2, is characterized in that: the diameter of described latten(-tin) is 50 ~ 70mm, evenly arranges 10 ~ 100 circular holes, and the diameter of described circular hole is 0.3mm ~ 0.5mm.
4. the pretreatment unit of transformer oil according to claim 2, it is characterized in that: described oil cylinder side top is provided with opening, described opening connecting tee D, Bonding pressure sensor and the gas-oil separation room respectively, other two ends of described threeway D, solenoid valve is provided with between described threeway D and gas-oil separation room, described gas-oil separation room connects described air and nitrogen interface by threeway E, and all the other one end of described threeway E connect vacuum pump by solenoid valve; Described threeway E and be provided with solenoid valve between air and nitrogen interface.
5. the pretreatment unit of transformer oil according to claim 1, is characterized in that: described gas-oil separation indoor are provided with liquid level sensor.
6. utilize the pretreatment unit of the arbitrary described transformer oil of claim 1-5 to carry out a pretreated method to transformer oil, it is characterized in that: said method comprising the steps of:
Step 1: oil-feed;
Described descent of piston, open the solenoid valve between described four-way and threeway A, if there is transformer oil described gas-oil separation indoor, then open solenoid valve between described threeway D and described gas-oil separation room and described threeway E and the solenoid valve between air and nitrogen interface, after bottom described piston arrives oil cylinder, close the above-mentioned solenoid valve opened;
Described descent of piston, open the solenoid valve between described four-way and threeway A, the solenoid valve between described four-way and threeway A is closed after bottom described piston arrives oil cylinder, and the solenoid valve opened between threeway D and described gas-oil separation room and the solenoid valve between described threeway E and vacuum pump; The solenoid valve between threeway D and described gas-oil separation room, solenoid valve between described threeway E and vacuum pump and vacuum pump is closed after reaching vacuum state in oil cylinder, open the solenoid valve between described oil-in and four-way, transformer oil is made to enter described device, the solenoid valve after completing between the described oil-in of closedown and four-way;
Step 2: vacuum atomizing is degassed;
Open the solenoid valve between described four-way and threeway A, described upstroke, to oil cylinder top, closes the solenoid valve between four-way and threeway A; Bottom descent of piston to oil cylinder, open ball valve and the solenoid valve between ball valve and threeway A;
Step 3: when pressure is not less than 5kPa in described oil cylinder, closes ball valve and the solenoid valve between ball valve and threeway A, opens the solenoid valve between threeway D and described gas-oil separation room, solenoid valve between threeway E and vacuum pump and vacuum pump; When pressure in oil cylinder is not higher than 0.1kPa, closes the above-mentioned solenoid valve opened and vacuum pump, open the solenoid valve between ball valve and threeway A;
Step 4: the operation of circulation step 3 is until transless oil in fuel tank, close the solenoid valve between ball valve and threeway A, open the solenoid valve between threeway D and described gas-oil separation room, solenoid valve between threeway E and vacuum pump and vacuum pump, after reaching vacuum state in oil cylinder, close the above-mentioned solenoid valve opened and vacuum pump;
Step 5: air cleaning;
Open described air and solenoid valve and the solenoid valve between threeway D and gas-oil separation room between nitrogen interface and threeway E, make air access to plant, when pressure in oil cylinder reaches 95kPa and is above, close the above-mentioned solenoid valve opened, upstroke until in oil cylinder pressure reach 150kPa and more than, open the solenoid valve between described four-way and ebullator and ebullator, make transformer oil start circulation, after 15 ~ 30 minutes, close ebullator;
Step 6: nitrogen purge;
Open solenoid valve between threeway D and described gas-oil separation room and described air and the solenoid valve between nitrogen interface and threeway E, make nitrogen access to plant, when pressure in oil cylinder reaches 150kPa and is above, close the above-mentioned solenoid valve opened, and open ebullator make transformer oil start circulation, close ebullator after 15 ~ 30 minutes; Complete the pre-service of transformer oil.
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104236986A (en) * | 2014-09-22 | 2014-12-24 | 杭州申昊科技股份有限公司 | Transformer oil gassing device |
| CN104215495A (en) * | 2014-10-09 | 2014-12-17 | 长沙业嘉电子科技有限公司 | Corrugated pipe vacuum degassing device and method for dissolved gas in insulating oil |
| CN104569219A (en) * | 2015-01-06 | 2015-04-29 | 陈静 | Online variable-capacity vacuum full-automatic degasser for transformer oil |
| CN104849129B (en) * | 2015-05-30 | 2017-12-08 | 国家电网公司 | Transformer oil mother liquor dilution method and its sample preparation device |
| CN106178608B (en) * | 2016-08-27 | 2018-08-07 | 南瑞通用电气智能监测诊断（武汉）有限公司 | Dynamic headspace degasser |
| CN107085088B (en) * | 2017-03-31 | 2019-07-26 | 国家电网公司 | The method of calibration of Gases Dissolved in Transformer Oil on-Line Monitor Device |
| CN111790279A (en) * | 2020-06-05 | 2020-10-20 | 广西电网有限责任公司电力科学研究院 | Device for removing and dissolving gas in oil |
| CN112198257B (en) * | 2020-10-05 | 2024-10-29 | 国网辽宁省电力有限公司电力科学研究院 | Automatic detection system and method for combustible gas of gas relay |
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