CN103779050A - Main-transformation coiled-tube-type heat-dissipating device with SF6 (sulfur hexafluoride) as refrigerant medium and heat-dissipating method - Google Patents
Main-transformation coiled-tube-type heat-dissipating device with SF6 (sulfur hexafluoride) as refrigerant medium and heat-dissipating method Download PDFInfo
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- CN103779050A CN103779050A CN201410055580.4A CN201410055580A CN103779050A CN 103779050 A CN103779050 A CN 103779050A CN 201410055580 A CN201410055580 A CN 201410055580A CN 103779050 A CN103779050 A CN 103779050A
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Abstract
The invention relates to a main-transformation coiled-tube-type heat-dissipating device with SF6 (sulfur hexafluoride) as a refrigerant medium and a heat-dissipating method. The main-transformation coiled-tube-type heat-dissipating device consists of a transformer oil flow cooling and circulating system and an SF6 refrigerant circulating system, wherein the transformer oil flow cooling and circulating system comprises a main-transformation body, an oil pump, and a tube pass of a coiled-tube-type SF6 evaporator; the main-transformation body is filled with transformer oil; a cold oil inlet and a cold oil inlet valve are arranged at the upper part of the main-transformation body; a hot oil outlet and a hot oil outlet valve are arranged at the lower part of the main-transformation body; the oil pump conveys hot transformer oil from the hot oil outlet to the tube pass of the coiled-tube-type SF6 evaporator; the hot transformer oil is cooled by an SF6 refrigerant inside the SF6 refrigerant circulating system and around the tube pass, and flows from an outlet of the tube pass of the coiled-tube-type SF6 evaporator to the cold oil inlet. The main-transformation coiled-tube-type heat-dissipating device has huge advantages of safety, reliability, high cooling efficiency, small equipment volume, low oil consumption, less maintenance, economical overall operation and the like, and is a revolutionary innovation of a main-transformation cooling way.
Description
Technical field
The present invention relates to a kind of with SF
6for main transformer coiled heat abstractor and the method for coolant media.
Background technology
Main transformer is in running, due to the effect of electricity and magnetic, its coil and iron core can generate heat, as can not be in time this heat taken away, to cause main transformer to burn the even serious accident of blast, therefore must come cooling coil and iron core by the transformer oil stream being full of in main transformer, and the heat that transformer oil stream is taken away needs to carry out heat exchange by heat abstractor, cooled cold oil stream enters main transformer body again and carries out cooling.The tradition main transformer type of cooling is mainly three kinds of air blast cooling, natural air cooled and water-cooleds, although water-cooled is economical, efficiency is also high, if if generation cooling water in cooling system is to main transformer Seepage, even minor leakage also will cause serious consequence; Air-cooled because air heat content is low, make main transformer cooling effectiveness low, main transformer, heat sink apparatus are manufactured the shortcomings such as bulky, many by oil mass, operating cost is high, maintenance is large.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, provide a kind of with SF
6for main transformer coiled heat abstractor and the method for coolant media, can take away safe, reliable, efficient, economically the heat energy that main transformer in service produces, safety, the economical operation of powerful guarantee electric power system main transformer.
To achieve these goals, technical scheme one of the present invention is: a kind of with SF
6for the main transformer coiled heat abstractor of coolant media, by transformer oil stream cooling recirculation system and SF
6coolant circulating system composition, described transformer oil stream cooling recirculation system comprises main transformer body, oil pump and coiled SF
6the tube side of evaporator, in described main transformer body, be loaded with coil and iron core are carried out to cooling transformer oil, described main transformer body top is provided with cold oil import and the cold oil inlet valve for inputting cold transformer oil, described main transformer body bottom is provided with for the hot oil outlet of heat outputting transformer oil and deep fat delivery valve, and described oil pump is delivered to coiled SF by heat transformer oil from hot oil outlet
6the tube side import of evaporator, described heat transformer oil is by SF
6in coolant circulating system, be enclosed in tube side SF around
6after refrigerant is cooling from coiled SF
6the tube side outlet of evaporator flow to cold oil import.
Further, described SF
6coolant circulating system comprises SF
6refrigerant compressor, cooler, choke valve and coiled SF
6the shell side of evaporator, described coiled SF
6the outlet of evaporator shell side connects SF
6the import of refrigerant compressor, described SF
6the outlet of refrigerant compressor connects the import of cooler, and the outlet of described cooler is by choke valve terminal pad tubular type SF
6the import of evaporator shell side.
Further, described coiled SF
6on pipeline between tube side outlet and the cold oil import of main transformer body of evaporator, oil temperature on-line measuring device is installed.
To achieve these goals, technical scheme two of the present invention is: a kind of with SF
6for the main transformer coiled heat dissipating method of coolant media, the method adopts as above with SF
6for the main transformer coiled heat abstractor of coolant media, and carry out according to the following steps: (1) opens the deep fat delivery valve of main transformer body bottom and the cold oil inlet valve on top; (2) open oil pump and SF
6coolant circulating system, transformer oil mobile in main transformer body is taken away the heat of main transformer coil and iron core generation, and transformer oil self is heated and becomes heat transformer oil, and the heat transformer oil being flowed out by deep fat delivery valve is squeezed into coiled SF through oil pump
6the tube side of evaporator, and and SF
6in coolant circulating system, be enclosed in the tube side low temperature SF of circulation around
6refrigerant carries out heat exchange, and its heat is by low temperature SF
6refrigerant is taken away and is become cold transformer oil, and cold transformer oil comes back in main transformer main body through cold oil inlet valve, and coil and iron core are carried out to next round cool cycles.
Further, in step (2), described SF
6coolant circulating system comprises SF
6refrigerant compressor, cooler, choke valve and coiled SF
6the shell side of evaporator, described coiled SF
6the outlet of evaporator shell side connects SF
6the import of refrigerant compressor, described SF
6the outlet of refrigerant compressor connects the import of cooler, and the outlet of described cooler is by choke valve terminal pad tubular type SF
6the import of evaporator shell side, its operation method is as follows: open SF
6refrigerant compressor, SF
6refrigerant compressor will be from coiled SF
6evaporator shell side low pressure SF out
6gas compression becomes high pressure-temperature SF
6gas, high pressure-temperature SF
6gas enters and in cooler, is cooled to high temperature SF
6liquid, high temperature SF
6liquid after choke valve expenditure and pressure cooling at coiled SF
6in evaporator shell side, absorb the heat of heat transformer oil in tube sides in a large number and flash to low pressure SF
6gas, low pressure SF
6gas is delivered to again SF
6in refrigerant compressor, compress, with this iterative cycles.
Further, described coiled SF
6on pipeline between tube side outlet and the cold oil import of main transformer body of evaporator, oil temperature on-line measuring device is installed.
Compared with prior art, the present invention has following beneficial effect: due to the SF using
6medium, it is except having good insulation, arc extinguishing, putting out combustion performance and stable physicochemical property, or a kind of good refrigerant that has higher thermal enthalpy, the coiled evaporation endothermic type of cooling using it as refrigerant is compared with traditional main transformer type of cooling, have safe and reliable, cooling effectiveness is high, equipment volume is little, few by oil mass, safeguard less, overall operation economic dispatch huge advantage, be the revolutionary character innovation of the main transformer type of cooling.
The present invention had both overcome in the middle of prior art with the main transformer of water-cooling pattern and is in operation and occurs to main transformer body seepage as cooling system, even small seepage all will produce catastrophe failure in main transformer under high voltage environment, and the serious consequence that even main transformer explodes; The shortcomings such as prior art is central because air heat content is low, makes main transformer cooling effectiveness low with air blast cooling or natural air cooled main transformer, and device fabrication volume is large, many by oil mass, operating cost is high, maintenance workload is large are overcome again; Compared with being now widely used traditional main transformer radiating mode, the present invention has huge advantage.
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
Accompanying drawing explanation
Fig. 1 is the transformer oil stream cooling recirculation system schematic diagram of the embodiment of the present invention.
Fig. 2 is the SF of the embodiment of the present invention
6coolant circulating system schematic diagram.
Fig. 3 be the embodiment of the present invention with SF
6for the main transformer coiled heat abstractor schematic diagram of coolant media.
Fig. 4 is that the control module of the embodiment of the present invention is controlled cold oil stream temperature functional-block diagram automatically.
In figure: 1-SF
6refrigerant compressor, 2-cooler inlet pipe, 3-cooler, 4-cooling blower, 5-cooler goes out pipe, 6-choke valve, 7-coiled SF
6evaporator, 8-SF
6evaporation endothermic flow process, 9-evaporator shell side goes out pipe, 10-deep fat delivery valve, 11-oil pump, 12-oil pump outlet valve, 13-evaporator oil stream tube side inlet pipe, 14-coiled SF
6the tube side of evaporator, 15-evaporator oil stream tube side goes out pipe, 16-oil temperature on-line measuring device, 17-cold oil inlet valve, 18-coil and iron core, 19-transformer oil, A-main transformer body, B-conservator.
Embodiment
As shown in Fig. 1 ~ 3, a kind of with SF
6for the main transformer coiled heat abstractor of coolant media, by transformer oil stream cooling recirculation system and SF
6coolant circulating system composition, described transformer oil stream cooling recirculation system comprises main transformer body A, oil pump 11 and coiled SF
6the tube side 14 of evaporator 7, in described main transformer body A, be loaded with coil and iron core 18 are carried out to cooling transformer oil 19, described main transformer body A top is provided with cold oil import and the cold oil inlet valve 17 for inputting cold transformer oil, described main transformer body A bottom is provided with hot oil outlet and the deep fat delivery valve 10 for heat outputting transformer oil, and described oil pump 11 is delivered to coiled SF by heat transformer oil 19 from hot oil outlet
6tube side 14 imports of evaporator 7, described heat transformer oil is by SF
6in coolant circulating system, be enclosed in tube side 14 SF around
6after refrigerant is cooling from coiled SF
6 tube side 14 outlets of evaporator 7 flow to cold oil import.Wherein, the transformer oil 19 that its inside of described main transformer body A is full of mainly plays insulation and cooling effect, main transformer coil and iron core 18 are in operation because the effect of electricity, magnetic can be generated heat, and as not in time this heat taken away, will cause main transformer to burn the even serious accident of blast.
In the present embodiment, described SF
6coolant circulating system comprises SF
6 refrigerant compressor 1, cooler 3, choke valve 6 and coiled SF
6the shell side of evaporator 7, described coiled SF
6the outlet of evaporator 7 shell sides connects SF
6the import of refrigerant compressor 1, described SF
6the outlet of refrigerant compressor 1 connects the import of cooler 3, and the outlet of described cooler 3 is by choke valve 6 terminal pad tubular type SF
6the import of evaporator 7 shell sides.Wherein, described cooler 3 can be the forced air cooler of being forced quenching by cooling blower 4, can be also water cooler, owing to being SF in cooler 3
6media for heat exchange, therefore just in case cooling water seepage is also irrelevant with main transformer oil stream; Described coiled SF
6 evaporator 7 is divided into tube side 14 and two medium flow process parts of isolating mutually of shell side, and transformer oil flow medium is at coiled SF
6in evaporator 7, walk tube side 14, SF
6coolant media is at coiled SF
6in evaporator 7, walk shell side, two circulatory systems are isolated mutually, transformer oil and SF
6refrigerant is by coiled SF
6in evaporator 7, the tube wall of tube side 14 carries out indirect heat exchange.
In the present embodiment, the outlet of described oil pump 11 is provided with oil pump outlet valve 12, the tube side 14 that described oil pump outlet valve 12 is connected in evaporator through evaporator oil stream tube side inlet pipe 13.Regulate cooling rate, the outlet of described cooler 3 and coiled SF for convenient according to actual conditions
6on pipeline between the import of evaporator 7 shell sides, choke valve 6 is installed, with to high temperature SF
6liquid carries out expenditure and pressure.For the convenient oil outlet temperature that detects tube side 14 in evaporator, described coiled SF
6evaporator oil stream tube side between tube side 14 outlets and the cold oil import of main transformer body A of evaporator 7 goes out on pipe 15 oil temperature on-line measuring device 16 is installed.
In the present embodiment, as shown in Figure 4, in order to facilitate intelligent automatic control, specifically electromagnetic throttle valve of described choke valve 6, specifically temperature monitor of described oil temperature on-line measuring device 16, described coiled SF
6 evaporator 7 is interior can be provided with the inner SF of induction
6the pressure sensor of gas pressure; Described temperature monitor, electromagnetic throttle valve and pressure sensor are all electrically connected at control module, described temperature monitor detects that by it evaporator tube side oil outlet temperature signal sends to control module, described control module regulates the valve opening of electromagnetic throttle valve, and described control module can be to make by technological requirement design programming the PLC or the single-chip microcomputer etc. that form.In the time that evaporator tube side oil outlet temperature is too high, the valve opening of electromagnetic throttle valve is turned in described control module control down, described coiled SF
6evaporator 7 evaporating pressures reduce, and then reduce SF in evaporator
6evaporating temperature is to reduce evaporator tube side oil outlet temperature, contrary conversely.
As shown in Fig. 1 ~ 3, a kind of with SF
6for the main transformer coiled heat dissipating method of coolant media, the method adopts above-mentioned with SF
6for the main transformer coiled heat abstractor of coolant media, and carry out according to the following steps: (1) opens the deep fat delivery valve 10 of main transformer body A bottom and the cold oil inlet valve 17 on top, open oil pump outlet valve 12; (2) open oil pump 11 and SF
6coolant circulating system, the heat that mobile transformer oil produces main transformer coil and iron core 18 in main transformer body A is taken away, and transformer oil self is heated and become heat transformer oil, and the heat transformer oil being flowed out by deep fat delivery valve 10 is squeezed into coiled SF through oil pump 11
6the tube side 14 of evaporator 7, and and SF
6in coolant circulating system, be enclosed in the tube side 14 low temperature SF of circulation around
6refrigerant carries out heat exchange, and its heat is by low temperature SF
6refrigerant is taken away and is become cold transformer oil, and cold transformer oil comes back in main transformer main body through cold oil inlet valve 17, and coil and iron core 18 are carried out to next round cool cycles.
In the present embodiment, in step (2), described SF
6coolant circulating system comprises SF
6 refrigerant compressor 1, cooler 3, choke valve 6 and coiled SF
6the shell side of evaporator 7, its operation method is as follows: open SF
6 refrigerant compressor 1, SF
6 refrigerant compressor 1 will go out the low pressure SF of pipe 9 from evaporator shell side
6gas compression becomes high pressure-temperature SF
6gas; Through SF
6high pressure-temperature SF after refrigerant compressor 1 compression
6gas enters in cooler 3 by cooler inlet pipe 2, by cooling blower semi-finals quenching processed, by high pressure-temperature SF
6gas cooled is high temperature SF
6liquid; High temperature SF
6liquid after choke valve 6 expenditure and pressures coolings at coiled SF
6in evaporator 7 shell sides, absorb the heat of heat transformer oil in tube sides in a large number and flash to low pressure SF
6gas, low pressure SF
6gas is delivered to again SF
6compression in refrigerant compressor 1, with this iterative cycles.
In the present embodiment, in step (2), from cooler 3 high temperature SF out
6liquid flow to coiled SF through choke valve 6
6the shell side of evaporator 7, now because volume sudden enlargement causes part high temperature SF
6liquid rotating becomes low pressure SF
6gas, liquid evaporation becomes in the process of gas can a large amount of heat absorptions and make high temperature SF
6fluid temperature sharply declines, the low temperature SF after temperature declines
6in liquid and evaporator, the mobile heat transformer oil stream of tube side 14 carries out heat exchange by tube wall, all flashes to low pressure SF after heat absorption
6gas, goes out pipe 9 through evaporator shell side and is back to SF
6the import of refrigerant compressor 1, carries out next round heat exchange circulation.
In the present embodiment, as shown in Figure 4, can, according to the real-time online data of temperature monitor, regulate electromagnetic throttle valve automatically to control SF in evaporator shell side by control module
6evaporating pressure and evaporating temperature, be controlled in the scope of setting with the oil outlet temperature of the transformer oil that guarantees to be cooled in evaporator tube side.
The foregoing is only preferred embodiment of the present invention, all equalizations of doing 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 (6)
1. one kind with SF
6for the main transformer coiled heat abstractor of coolant media, it is characterized in that: by transformer oil stream cooling recirculation system and SF
6coolant circulating system composition, described transformer oil stream cooling recirculation system comprises main transformer body, oil pump and coiled SF
6the tube side of evaporator, in described main transformer body, be loaded with coil and iron core are carried out to cooling transformer oil, described main transformer body top is provided with cold oil import and the cold oil inlet valve for inputting cold transformer oil, described main transformer body bottom is provided with for the hot oil outlet of heat outputting transformer oil and deep fat delivery valve, and described oil pump is delivered to coiled SF by heat transformer oil from hot oil outlet
6the tube side import of evaporator, described heat transformer oil is by SF
6in coolant circulating system, be enclosed in tube side SF around
6after refrigerant is cooling from coiled SF
6the tube side outlet of evaporator flow to cold oil import.
2. according to claim 1 with SF
6for the main transformer coiled heat abstractor of coolant media, it is characterized in that: described SF
6coolant circulating system comprises SF
6refrigerant compressor, cooler, choke valve and coiled SF
6the shell side of evaporator, described coiled SF
6the outlet of evaporator shell side connects SF
6the import of refrigerant compressor, described SF
6the outlet of refrigerant compressor connects the import of cooler, and the outlet of described cooler is by choke valve terminal pad tubular type SF
6the import of evaporator shell side.
3. according to claim 1 and 2 with SF
6for the main transformer coiled heat abstractor of coolant media, it is characterized in that: described coiled SF
6on pipeline between tube side outlet and the cold oil import of main transformer body of evaporator, oil temperature on-line measuring device is installed.
4. one kind with SF
6for the main transformer coiled heat dissipating method of coolant media, it is characterized in that: the method adopts as claimed in claim 1 with SF
6for the main transformer coiled heat abstractor of coolant media, and carry out according to the following steps: (1) opens the deep fat delivery valve of main transformer body bottom and the cold oil inlet valve on top; (2) open oil pump and SF
6coolant circulating system, transformer oil mobile in main transformer body is taken away the heat of main transformer coil and iron core generation, and transformer oil self is heated and becomes heat transformer oil, and the heat transformer oil being flowed out by deep fat delivery valve is squeezed into coiled SF through oil pump
6the tube side of evaporator, and and SF
6in coolant circulating system, be enclosed in the tube side low temperature SF of circulation around
6refrigerant carries out heat exchange, and its heat is by low temperature SF
6refrigerant is taken away and is become cold transformer oil, and cold transformer oil comes back in main transformer main body through cold oil inlet valve, and coil and iron core are carried out to next round cool cycles.
5. according to claim 4 with SF
6for the main transformer coiled heat dissipating method of coolant media, it is characterized in that: in step (2), described SF
6coolant circulating system comprises SF
6refrigerant compressor, cooler, choke valve and coiled SF
6the shell side of evaporator, described coiled SF
6the outlet of evaporator shell side connects SF
6the import of refrigerant compressor, described SF
6the outlet of refrigerant compressor connects the import of cooler, and the outlet of described cooler is by choke valve terminal pad tubular type SF
6the import of evaporator shell side, its operation method is as follows: open SF
6refrigerant compressor, SF
6refrigerant compressor will be from coiled SF
6evaporator shell side low pressure SF out
6gas compression becomes high pressure-temperature SF
6gas, high pressure-temperature SF
6gas enters and in cooler, is cooled to high temperature SF
6liquid, high temperature SF
6liquid after choke valve expenditure and pressure cooling at coiled SF
6in evaporator shell side, absorb the heat of heat transformer oil in tube sides in a large number and flash to low pressure SF
6gas, low pressure SF
6gas is delivered to again SF
6in refrigerant compressor, compress, with this iterative cycles.
According to described in claim 4 or 5 with SF
6for the main transformer coiled heat dissipating method of coolant media, it is characterized in that: described coiled SF
6on pipeline between tube side outlet and the cold oil import of main transformer body of evaporator, oil temperature on-line measuring device is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410055580.4A CN103779050B (en) | 2014-02-19 | 2014-02-19 | A kind of with SF 6for main transformer coiled heat abstractor and the method for coolant media |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410055580.4A CN103779050B (en) | 2014-02-19 | 2014-02-19 | A kind of with SF 6for main transformer coiled heat abstractor and the method for coolant media |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103779050A true CN103779050A (en) | 2014-05-07 |
| CN103779050B CN103779050B (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410055580.4A Active CN103779050B (en) | 2014-02-19 | 2014-02-19 | A kind of with SF 6for main transformer coiled heat abstractor and the method for coolant media |
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| Country | Link |
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| CN (1) | CN103779050B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110782191A (en) * | 2019-12-31 | 2020-02-11 | 汇网电气有限公司 | Cloud platform based power grid switch cabinet remote management method and system |
| CN111537704A (en) * | 2020-05-20 | 2020-08-14 | 四川大学 | Online measurement device and method for concentration of dissolved oxygen in fuel oil |
| CN114188127A (en) * | 2021-11-10 | 2022-03-15 | 国网福建省电力有限公司邵武市供电公司 | Power transformer cooling device and cooling method |
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|---|---|---|---|---|
| GB1099366A (en) * | 1963-11-04 | 1968-01-17 | Marston Excelsior Ltd | A method of cooling transformers and apparatus for performing the method |
| JPS60246609A (en) * | 1984-05-22 | 1985-12-06 | Fuji Electric Co Ltd | Gas insulated stationary induction electric appratus |
| CN1812014A (en) * | 2006-02-24 | 2006-08-02 | 中国科学院电工研究所 | Sleeve type evaporative cooling transformer with oil-tank |
| CN203397832U (en) * | 2013-07-26 | 2014-01-15 | 安德利集团有限公司 | Oil pump oil cooling transformer |
| CN203706796U (en) * | 2014-02-19 | 2014-07-09 | 国家电网公司 | Main transformer coiled tube type cooling device with SF6 medium as coolant |
-
2014
- 2014-02-19 CN CN201410055580.4A patent/CN103779050B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1099366A (en) * | 1963-11-04 | 1968-01-17 | Marston Excelsior Ltd | A method of cooling transformers and apparatus for performing the method |
| JPS60246609A (en) * | 1984-05-22 | 1985-12-06 | Fuji Electric Co Ltd | Gas insulated stationary induction electric appratus |
| CN1812014A (en) * | 2006-02-24 | 2006-08-02 | 中国科学院电工研究所 | Sleeve type evaporative cooling transformer with oil-tank |
| CN203397832U (en) * | 2013-07-26 | 2014-01-15 | 安德利集团有限公司 | Oil pump oil cooling transformer |
| CN203706796U (en) * | 2014-02-19 | 2014-07-09 | 国家电网公司 | Main transformer coiled tube type cooling device with SF6 medium as coolant |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110782191A (en) * | 2019-12-31 | 2020-02-11 | 汇网电气有限公司 | Cloud platform based power grid switch cabinet remote management method and system |
| CN110782191B (en) * | 2019-12-31 | 2020-05-05 | 汇网电气有限公司 | Cloud platform based power grid switch cabinet remote management method and system |
| CN111537704A (en) * | 2020-05-20 | 2020-08-14 | 四川大学 | Online measurement device and method for concentration of dissolved oxygen in fuel oil |
| CN111537704B (en) * | 2020-05-20 | 2022-08-02 | 四川大学 | Online measurement device and method for concentration of dissolved oxygen in fuel oil |
| CN114188127A (en) * | 2021-11-10 | 2022-03-15 | 国网福建省电力有限公司邵武市供电公司 | Power transformer cooling device and cooling method |
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| Publication number | Publication date |
|---|---|
| CN103779050B (en) | 2016-01-06 |
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