CN203706796U - Main transformer coiled tube type cooling device with SF6 medium as coolant - Google Patents
Main transformer coiled tube type cooling device with SF6 medium as coolant Download PDFInfo
- Publication number
- CN203706796U CN203706796U CN201420070905.1U CN201420070905U CN203706796U CN 203706796 U CN203706796 U CN 203706796U CN 201420070905 U CN201420070905 U CN 201420070905U CN 203706796 U CN203706796 U CN 203706796U
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- China
- Prior art keywords
- oil
- main transformer
- coiled
- evaporator
- transformer
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- Expired - Lifetime
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- 238000001816 cooling Methods 0.000 title claims abstract description 41
- 239000002826 coolant Substances 0.000 title claims abstract description 29
- 239000003507 refrigerant Substances 0.000 claims description 24
- 230000008676 import Effects 0.000 claims description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000001704 evaporation Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000007906 compression Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009102 absorption Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Transformer Cooling (AREA)
Abstract
The utility model relates to a main transformer coiled tube type cooling device with an SF6 medium as the coolant. The main transformer coiled tube type cooling device is composed of a transformer oil flow cooling circulation system and an SF6 coolant circulation system. The transformer oil flow cooling circulation system comprises a main transformer body, an oil pump and a tube pass of a coiled tube type SF6 evaporator. Transformer oil is contained in the main transformer body. The upper portion of the main transformer body is provided with a cold oil inlet and a cold oil inlet valve. The lower portion of the main transformer body is provided with a hot oil outlet and a hot oil outlet valve. The oil pump conveys the hot transformer oil from the hot oil outlet to an inlet of the tube pass of the coiled tube type SF6 evaporator. The hot transformer oil is cooled by the SF6 coolant surrounding the tube pass in the SF6 coolant circulation system and then flows to the cold oil inlet from an outlet of the tube pass of the coiled tube type SF6 evaporator. The main transformer coiled tube type cooling device has the great advantages of being safe, reliable, high in cooling efficiency, small in size, low in oil consumption and maintenance, economical in overall operation and the like, thereby being a revolutionary innovation in main transformer cooling modes.
Description
Technical field
The utility model relates to a kind of with SF
6for the main transformer coiled heat abstractor of 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.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art part, provides a kind of with SF
6for the main transformer coiled heat abstractor of 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, the technical solution of the utility model 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.
Compared with prior art, the utlity model 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 utility model 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, in main transformer, under high voltage environment, all will produce catastrophe failure, even the serious consequence of main transformer blast; 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 utility model has huge advantage.
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Accompanying drawing explanation
Fig. 1 is the transformer oil stream cooling recirculation system schematic diagram of the utility model embodiment.
Fig. 2 is the SF of the utility model embodiment
6coolant circulating system schematic diagram.
Fig. 3 be the utility model embodiment with SF
6for the main transformer coiled heat abstractor schematic diagram of coolant media.
Fig. 4 is that the control module of the utility model embodiment 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
6tube 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
6refrigerant 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
6evaporator 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
6evaporator 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, should be with SF
6for the using method of the main transformer coiled heat abstractor of coolant media is carried out according to the following steps: (1) opens 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
6refrigerant compressor 1, cooler 3, choke valve 6 and coiled SF
6the shell side of evaporator 7, its operation method is as follows: open SF
6refrigerant compressor 1, SF
6refrigerant 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 utility model, all equalizations of doing according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (3)
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420070905.1U CN203706796U (en) | 2014-02-19 | 2014-02-19 | Main transformer coiled tube type cooling device with SF6 medium as coolant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420070905.1U CN203706796U (en) | 2014-02-19 | 2014-02-19 | Main transformer coiled tube type cooling device with SF6 medium as coolant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203706796U true CN203706796U (en) | 2014-07-09 |
Family
ID=51057199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420070905.1U Expired - Lifetime CN203706796U (en) | 2014-02-19 | 2014-02-19 | Main transformer coiled tube type cooling device with SF6 medium as coolant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203706796U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103779050A (en) * | 2014-02-19 | 2014-05-07 | 国家电网公司 | Main-transformation coiled-tube-type heat-dissipating device with SF6 (sulfur hexafluoride) as refrigerant medium and heat-dissipating method |
-
2014
- 2014-02-19 CN CN201420070905.1U patent/CN203706796U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103779050A (en) * | 2014-02-19 | 2014-05-07 | 国家电网公司 | Main-transformation coiled-tube-type heat-dissipating device with SF6 (sulfur hexafluoride) as refrigerant medium and heat-dissipating method |
| CN103779050B (en) * | 2014-02-19 | 2016-01-06 | 国家电网公司 | A kind of with SF 6for main transformer coiled heat abstractor and the method for coolant media |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140709 Effective date of abandoning: 20160106 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |