CN104157399B - A kind of main transformer falling film type heat-exchanger rig and using method - Google Patents
A kind of main transformer falling film type heat-exchanger rig and using method Download PDFInfo
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- CN104157399B CN104157399B CN201410402886.2A CN201410402886A CN104157399B CN 104157399 B CN104157399 B CN 104157399B CN 201410402886 A CN201410402886 A CN 201410402886A CN 104157399 B CN104157399 B CN 104157399B
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- 239000011552 falling film Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000010408 film Substances 0.000 claims abstract description 132
- 238000005057 refrigeration Methods 0.000 claims abstract description 31
- 239000002826 coolant Substances 0.000 claims abstract description 29
- 238000001816 cooling Methods 0.000 claims abstract description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000017531 blood circulation Effects 0.000 claims abstract description 6
- 239000003507 refrigerant Substances 0.000 claims description 37
- 239000007788 liquid Substances 0.000 claims description 15
- 238000004804 winding Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 239000000446 fuel Substances 0.000 claims description 6
- 230000008676 import Effects 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 6
- 230000001939 inductive effect Effects 0.000 claims description 6
- 239000000523 sample Substances 0.000 claims description 6
- 230000004087 circulation Effects 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052802 copper Inorganic materials 0.000 abstract description 2
- 239000010949 copper Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 239000006200 vaporizer Substances 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 1
- IYRDVAUFQZOLSB-UHFFFAOYSA-N copper iron Chemical compound [Fe].[Cu] IYRDVAUFQZOLSB-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Landscapes
- Transformer Cooling (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The present invention provides a kind of main transformer falling film type heat-exchanger rig and using method thereof, and main transformer falling film type heat-exchanger rig is made up of transformer oil stream cooling recirculation system, coolant media blood circulation and control system.This device transformer oil the most directly contacts with coolant media, but carries out heat exchange by the film supplying tube tube wall of downward film evaporator.Control system can be controlled automatically at the transformer oil in downward film evaporator tube side, is formed and membranaceous flows down along film supplying tube inwall, increases heat exchange effect and according to the oil temperature in transformer body, automatically controls the work of refrigeration compressor.The present invention have safe and reliable, cooling effectiveness is high, equipment volume is little, few by oil mass, safeguard less, overall operation economic dispatch huge advantage, can greatly reduce the operation copper of main transformer, iron loss, improve main transformer overload and resistance to shorting current capacity, extend main transformer service life, more powerful guarantee main transformer safe operation.
Description
Technical field
The present invention relates to a kind of main transformer falling film type heat-exchanger rig and using method.
Background technology
Main transformer is in running, due to effect electrically and magnetically, its winding and iron core can generate heat, as can not be in time this heat taken away, the major accident even exploded causing main transformer to burn, therefore must cool down winding 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, the cold oil stream after cooling enters back into transformer body and cools down.The tradition main transformer type of cooling is mainly air blast cooling, natural air cooled and water-cooled three kinds, although water-cooled is economical, efficiency is the highest, if but as cooling system occurred cooling water to main transformer Seepage, even minor leakage, also lead to serious consequence；Air-cooled because of air heat content low, make that main transformer cooling effectiveness is low, the scope that cools is the least, big by such environmental effects, main transformer, heat sink apparatus manufacture bulky, many by oil mass, operating cost is high, maintenance is big, and cause that main transformer copper iron loss is big, main transformer overload and resistance to shorting current capacity little, insulation life is short waits shortcomings.
Summary of the invention
In place of it is an object of the invention to overcome the deficiencies in the prior art, a kind of main transformer falling film type heat-exchanger rig and using method are i.e. provided, energy is safe, reliable, efficient, Economic regions walks the heat energy that in running, main transformer produces, the safety of powerful guarantee power system main transformer, economical operation.
nullFirst specific embodiments of the present invention is: a kind of main transformer falling film type heat-exchanger rig，It is built-in with the oily transformer body of transformer Cooling including one and is arranged at the downward film evaporator of transformer body side，Described downward film evaporator includes the housing of a closing，It is provided with coolant media in described housing，Described housing central section is vertically arranged with several film supplying tubes，Described film supplying tube is the tubular body that two ends have opening，Described film supplying tube top is placed in an orifice plate，Housing is divided into upper chamber and lower chambers by described orifice plate，The tube wall that described each film supplying tube stretches out orifice plate upper end is provided with film supplying tube spout hole，The sidewall on described transformer body top is provided with out deep fat electromagnetic valve，Described go out deep fat electromagnetic valve be connected with the upper chamber in downward film evaporator housing by the road，Described downward film evaporator housing bottom is provided with downward film evaporator tube side and goes out pipe，The sidewall of described transformer body bottom is provided with into cold oil valve，Described tube side go out pipe by the road with enter cold oil valve and be connected.
Further, the sidewall on described downward film evaporator lower chambers top is provided with downward film evaporator refrigerant exit, the sidewall of downward film evaporator bottom is provided with downward film evaporator coolant import, and described downward film evaporator refrigerant exit is by the road through refrigeration compressor, condenser and choke valve and downward film evaporator coolant inlet communication.
Further, described orifice plate includes that plate body, described plate body are provided with the through hole for inserting film supplying tube, and described plate body perimembranous fits with downward film evaporator shell inner surface.
Further, it is provided with oil level inductive probe in downward film evaporator housing upper chamber, oil level inductive probe upper end connects the oil level induction apparatus stretching out upper chamber, described transformer body is provided with main transformer oil sensor, and described tube side goes out pipe and is additionally provided with oil pump with entering on the connecting line of cold oil valve by the road.
Further, described condenser is air cooling condenser or water condenser.
Further, described main transformer chiller also includes that control module, described control module are electrically connected at oil level induction apparatus, temperature sensor, refrigeration compressor, goes out deep fat electromagnetic valve.
Second specific embodiments of the present invention is: a kind of main transformer falling film type heat-exchanger rig method, including a kind of main transformer falling film type heat-exchanger rig as claimed in claim 6, specifically comprises the following steps that
1) open transformer body top go out deep fat electromagnetic valve and bottom enter cold oil valve and oil pump, in transformer body, the heat that main transformer winding and iron core produce is taken away by the transformer oil of flowing, and transformer oil self is heated and becomes heat transformer oil；The heat transformer oil going out the control outflow of deep fat electromagnetic valve flow to around the film supplying tube of downward film evaporator, by the spout hole that film supplying tube top surrounding is uniform, membranaceous flowing down is formed along film supplying tube inwall, and carrying out heat exchange with the low temperature cold medium being enclosed in film supplying tube surrounding loop in downward film evaporator housing, its heat is taken away by low temperature coolant and self is become cold transformer oil；
2) opening refrigeration compressor, refrigeration compressor will become high pressure-temperature cold media gas from downward film evaporator refrigerant exit low pressure refrigerant gas compression out；It is cooled to high temperature refrigerant liquid in going out the high pressure-temperature cold media gas entrance condenser of compressor；From condenser high temperature refrigerant liquid out in choke valve throttling to the housing of downward film evaporator, low temperature coolant liquid all flashes to low pressure refrigerant gas after the heat absorbing a large amount of heat transformers oil, low pressure refrigerant gas is pumped down to again in refrigeration compressor compression, with this iterative cycles open cold medium blood circulation；
3) after cold transformer oil goes out the outlet of downward film evaporator tube side, beaten to transformer body through entering cold oil valve by oil pump, winding and iron core are carried out next round cooling circulation；
4) sensing device of opening control system and control module, the level height that control module can be arranged according to the fuel level sensor of downward film evaporator, control deep fat electromagnetic valve, membranaceous flow down along film supplying tube inwall ensureing that transformer oil is formed in the film supplying tube of downward film evaporator；Control module automatically controls the work of refrigeration compressor according to main transformer oil, when oil temperature is higher than setting value, controls refrigeration compressor and opens, and when oil temperature is less than setting value, controls refrigeration compressor and closes.
Compared with prior art, the method have the advantages that the present invention utilize have deep fat safe and reliable, that utilize downward film evaporator to carry out in main transformer cooling, cooling effectiveness is high, equipment volume is little, few by oil mass, safeguard less, overall operation economic dispatch huge advantage, can greatly reduce the operation copper of main transformer, iron loss, improve main transformer overload and resistance to shorting current capacity, extend main transformer service life, more powerful guarantee main transformer safe operation.
Accompanying drawing explanation
Fig. 1 is the main transformer falling film type heat-exchanger rig main-process stream schematic diagram of the embodiment of the present invention；
Fig. 2 is the transformer oil stream cooling recirculation system schematic diagram of the embodiment of the present invention；
Fig. 3 is the coolant circulating system schematic diagram of the embodiment of the present invention；
Fig. 4 is the downward film evaporator structure principle chart of the embodiment of the present invention；
Fig. 5 be the embodiment of the present invention downward film evaporator in film supplying tube structure chart；
Fig. 6 is the downward film evaporator aperture plate structure chart of the embodiment of the present invention；
Fig. 7 is the top view of Fig. 6 of the embodiment of the present invention.
Fig. 8 is the control system Automatic Control Theory block diagram of the embodiment of the present invention.
nullIn figure: 1-goes out deep fat electromagnetic valve，2-downward film evaporator tube side inlet pipe，3-downward film evaporator tube side goes out pipe，4-oil pump inlet valve，5-oil pump，6-enters cold oil valve，7-downward film evaporator，8--downward film evaporator refrigerant exit，9-refrigeration compressor，10-condenser，11-condenser fan，12-condenser inlet，13-condensator outlet，14-choke valve，15-downward film evaporator coolant import，16-main transformer oil sensor，17-film supplying tube，18-downward film evaporator tube side upper end deep fat layer，19-orifice plate，20-fuel level sensor is popped one's head in，21-fuel level sensor，Oil film flow process in 22-film supplying tube，23--downward film evaporator tube side lower end cold oil layer，Refrigerant flow path in 24--downward film evaporator shell side，25-film supplying tube spout hole，26-transformer body.
Detailed description of the invention
The present invention will be further described in detail with detailed description of the invention below in conjunction with the accompanying drawings.
As shown in Fig. 1 ~ 8, by transformer oil stream cooling recirculation system, coolant media, (coolant media can be SF to a kind of main transformer falling film type heat-exchanger rig6Or other be suitable for medium) blood circulation and control system composition.
nullTransformer oil stream cooling recirculation system specifically includes that a transformer body 26 being built-in with transformer Cooling oil and is arranged at the downward film evaporator 7 of transformer body 26 side，Described downward film evaporator 7 includes the housing of a closing，It is provided with coolant media in described housing，Described housing central section is vertically arranged with several film supplying tubes 17，Described film supplying tube 17 has the tubular body of opening for two ends，Described film supplying tube 17 top is placed in an orifice plate 19，Described orifice plate 19 includes plate body，Described plate body is provided with the through hole for inserting film supplying tube，Plate body perimembranous fits with downward film evaporator shell inner surface，Housing is divided into upper chamber and lower chambers by orifice plate 19，The tube wall that each film supplying tube 17 stretches out orifice plate upper end is provided with film supplying tube spout hole 25，The sidewall on described transformer body top is provided with out deep fat electromagnetic valve 1，Described go out deep fat electromagnetic valve 1 be connected with the upper chamber in downward film evaporator housing by the road，Described downward film evaporator 7 housing bottom is provided with downward film evaporator tube side and goes out pipe 3，The sidewall of described transformer body 26 bottom is provided with into cold oil valve，Described tube side go out pipe 3 by the road with enter cold oil valve 6 and be connected.Described tube side goes out pipe 3 and is additionally provided with oil pump 5 on the connecting line of cold oil valve 6 with entering by the road, and described oil pump 5 is also associated with oil pump inlet valve 4.
The operation principle of main transformer falling film type heat-exchanger rig circulation of oil flow system:
Transformer body top go out deep fat electromagnetic valve 1, transformer body bottom enter cold oil valve 6, oil pump 5 and oil pump inlet valve 4；In transformer body, the transformer oil of flowing starts the cycle over flowing, and is taken away by the heat that main transformer winding and iron core produce, and transformer oil self is heated and becomes heat transformer oil；The heat transformer oil going out deep fat electromagnetic valve 1 control outflow flow to downward film evaporator tube side inlet pipe 2, the upper end entering vaporizer tube side part forms downward film evaporator tube side upper end deep fat layer 18, oil passes through the spout hole 25 that film supplying tube 17 top surrounding is uniform, membranaceous flowing down is formed along film supplying tube 17 inwall, and be i.e. enclosed in the low temperature cold medium of tube side surrounding loop with the refrigerant flow path 24 in downward film evaporator shell side and carry out heat exchange, forming downward film evaporator tube side lower end cold oil layer 23, its heat is taken away by low temperature coolant and self is become cold transformer oil；Cold transformer oil goes out after downward film evaporator tube side goes out pipe 3, by oil pump 5 through entering 6 dozens, cold oil valve in transformer body 26, winding and iron core carries out next round cooling circulation.
(coolant media can be SF to coolant media6Or other medium being suitable for) blood circulation specifically includes that the sidewall on described downward film evaporator lower chambers top is provided with downward film evaporator refrigerant exit 8, the sidewall of downward film evaporator bottom is provided with downward film evaporator coolant import 15, and described downward film evaporator refrigerant exit 8 connects with downward film evaporator coolant import 15 through refrigeration compressor 9, condenser 10 and choke valve 14 by the road.
The operation principle of coolant circulating system: refrigeration compressor 9 will become high pressure-temperature cold media gas from downward film evaporator refrigerant exit 8 low pressure refrigerant gas compression out；The high pressure-temperature cold media gas going out compressor 9 enters in condenser 10, and condenser side is provided with condenser fan 11, is cooled to high temperature refrigerant liquid；From condensator outlet 13 high temperature refrigerant liquid out, it flow to downward film evaporator coolant import 15 through choke valve 14, enter the refrigerant flow path 24 in downward film evaporator shell side；Now part high temperature refrigerant liquid is caused to be changed into low pressure refrigerant gas due to volume sudden enlargement, cooling medium liquid evacuator body can absorb heat in a large number and whole cooling medium liquid temperature is drastically declined during becoming gas, and the low temperature coolant liquid after temperature declines all flashes to low pressure refrigerant gas after the heat of a large amount of heat transformer oil in film supplying tube 17 in absorbing vaporizer；After low pressure refrigerant gas goes out vaporizer refrigerant exit 8, it is pumped down to again in refrigeration compressor 9 compression, with this iterative cycles.
In order to preferably realize that said mechanism operation is controlled, the present invention have also been devised a kind of main transformer falling film type heat-exchanger rig control system and specifically includes: described main transformer chiller also includes control module, it is provided with oil level inductive probe 20 in downward film evaporator housing upper chamber, oil level inductive probe 20 upper end connects the oil level induction apparatus 21 stretching out upper chamber, described transformer body is provided with main transformer oil sensor, and described tube side goes out pipe and is additionally provided with oil pump with entering on the connecting line of cold oil valve by the road.Described control module is electrically connected at oil level induction apparatus 21, temperature sensor 16, refrigeration compressor 9 deep fat electromagnetic valve 1 etc..
Its main operational principle: the level height that control module can be arranged according to the fuel level sensor of downward film evaporator, controls deep fat electromagnetic valve, membranaceous flows down along film supplying tube inwall ensureing that transformer oil is formed in the film supplying tube of downward film evaporator；Control module according to being arranged on the data that main transformer top oil sensor transmits, can also automatically control the work of refrigeration compressor according to the program of prior design programming, when oil temperature is higher than setting value, control refrigeration compressor to open, when oil temperature is less than setting value, controls refrigeration compressor and close.
Above-mentioned a kind of main transformer falling film type heat-exchanger rig using method specifically comprises the following steps that
1) open transformer body top go out deep fat electromagnetic valve and bottom enter cold oil valve and oil pump, in transformer body, the heat that main transformer winding and iron core produce is taken away by the transformer oil of flowing, and transformer oil self is heated and becomes heat transformer oil；The heat transformer oil going out the control outflow of deep fat electromagnetic valve flow to around the film supplying tube of downward film evaporator, by the spout hole that film supplying tube top surrounding is uniform, membranaceous flowing down is formed along film supplying tube inwall, and carrying out heat exchange with the low temperature cold medium being enclosed in film supplying tube surrounding loop in downward film evaporator housing, its heat is taken away by low temperature coolant and self is become cold transformer oil；
2) opening refrigeration compressor, refrigeration compressor will become high pressure-temperature cold media gas from downward film evaporator refrigerant exit low pressure refrigerant gas compression out；It is cooled to high temperature refrigerant liquid in going out the high pressure-temperature cold media gas entrance condenser of compressor；From condenser high temperature refrigerant liquid out in choke valve throttling to the housing of downward film evaporator, low temperature coolant liquid all flashes to low pressure refrigerant gas after the heat absorbing a large amount of heat transformers oil, low pressure refrigerant gas is pumped down to again in refrigeration compressor compression, with this iterative cycles open cold medium blood circulation；
3) after cold transformer oil goes out the outlet of downward film evaporator tube side, beaten to transformer body through entering cold oil valve by oil pump, winding and iron core are carried out next round cooling circulation；
4) sensing device of opening control system and control module, the level height that control module can be arranged according to the fuel level sensor of downward film evaporator, control deep fat electromagnetic valve, membranaceous flow down along film supplying tube inwall ensureing that transformer oil is formed in the film supplying tube of downward film evaporator；Control module automatically controls the work of refrigeration compressor according to main transformer oil, when oil temperature is higher than setting value, controls refrigeration compressor and opens, and when oil temperature is less than setting value, controls refrigeration compressor and closes.
The foregoing is only presently preferred embodiments of the present invention, all impartial changes done according to scope of the present invention patent and modification, all should belong to the covering scope of the present invention.
Claims (3)
- null1. a main transformer falling film type heat-exchanger rig method，Utilize a kind of main transformer falling film type heat-exchanger rig，Described a kind of main transformer falling film type heat-exchanger rig includes a transformer body being built-in with transformer Cooling oil and is arranged at the downward film evaporator of transformer body side，Described downward film evaporator includes the housing of a closing，It is provided with coolant media in described housing，Described housing central section is vertically arranged with several film supplying tubes，Described film supplying tube is the tubular body that two ends have opening，Described film supplying tube top is placed in an orifice plate，Housing is divided into upper chamber and lower chambers by described orifice plate，The tube wall that described each film supplying tube stretches out orifice plate upper end is provided with film supplying tube spout hole，The sidewall on described transformer body top is provided with out deep fat electromagnetic valve，Described go out deep fat electromagnetic valve be connected with the upper chamber in downward film evaporator housing by the road，Described downward film evaporator housing bottom is provided with downward film evaporator tube side and goes out pipe，The sidewall of described transformer body bottom is provided with into cold oil valve，Described tube side go out pipe by the road with enter cold oil valve and be connected，The sidewall on described downward film evaporator lower chambers top is provided with downward film evaporator refrigerant exit，The sidewall of downward film evaporator bottom is provided with downward film evaporator coolant import，Described downward film evaporator refrigerant exit is by the road through refrigeration compressor、Condenser and choke valve and downward film evaporator coolant inlet communication，It is provided with oil level inductive probe in downward film evaporator housing upper chamber，Oil level inductive probe upper end connects the oil level induction apparatus stretching out upper chamber，Described transformer body is provided with main transformer oil sensor，Described tube side goes out pipe and is additionally provided with oil pump with entering on the connecting line of cold oil valve by the road，Described primary transform thermal also includes control module，Described control module is electrically connected at oil level induction apparatus，Temperature sensor、Refrigeration compressor、Go out deep fat electromagnetic valve；Specifically comprise the following steps that1) open transformer body top go out deep fat electromagnetic valve and bottom enter cold oil valve and oil pump, in transformer body, the heat that main transformer winding and iron core produce is taken away by the transformer oil of flowing, and transformer oil self is heated and becomes heat transformer oil；The heat transformer oil going out the control outflow of deep fat electromagnetic valve flow to around the film supplying tube of downward film evaporator, by the spout hole that film supplying tube top surrounding is uniform, membranaceous flowing down is formed along film supplying tube inwall, and carrying out heat exchange with the low temperature cold medium being enclosed in film supplying tube surrounding loop in downward film evaporator housing, its heat is taken away by low temperature coolant and self is become cold transformer oil；2) opening refrigeration compressor, refrigeration compressor will become high pressure-temperature cold media gas from downward film evaporator refrigerant exit low pressure refrigerant gas compression out；It is cooled to high temperature refrigerant liquid in going out the high pressure-temperature cold media gas entrance condenser of compressor；From condenser high temperature refrigerant liquid out in choke valve throttling to the housing of downward film evaporator, low temperature coolant liquid all flashes to low pressure refrigerant gas after the heat absorbing a large amount of heat transformers oil, low pressure refrigerant gas is pumped down to again in refrigeration compressor compression, with this iterative cycles open cold medium blood circulation；3) after cold transformer oil goes out the outlet of downward film evaporator tube side, beaten to transformer body through entering cold oil valve by oil pump, winding and iron core are carried out next round cooling circulation；4) sensing device of opening control system and control module, the level height that control module can be arranged according to the fuel level sensor of downward film evaporator, control deep fat electromagnetic valve, membranaceous flow down along film supplying tube inwall ensureing that transformer oil is formed in the film supplying tube of downward film evaporator；Control module automatically controls the work of refrigeration compressor according to main transformer oil, when oil temperature is higher than setting value, controls refrigeration compressor and opens, and when oil temperature is less than setting value, controls refrigeration compressor and closes.
- A kind of main transformer falling film type heat-exchanger rig method the most according to claim 1, described orifice plate includes that plate body, described plate body are provided with the through hole for inserting film supplying tube, and described plate body perimembranous fits with downward film evaporator shell inner surface.
- 3., according to a kind of main transformer falling film type heat-exchanger rig method described in claim 1, described condenser is air cooling condenser or water condenser.
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| CN106024316A (en) * | 2016-08-09 | 2016-10-12 | 胡启元 | Intelligent heat-radiating transformer |
| CN108966611B (en) * | 2018-09-11 | 2024-05-28 | 广东西江数据科技有限公司 | Liquid immersion cooling type exchanger and exchanger unit |
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| JPS61245507A (en) * | 1985-04-24 | 1986-10-31 | Mitsubishi Electric Corp | System for utilizing exhaust heat of oil-filled stationary induction apparatus |
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| CN203746611U (en) * | 2014-03-13 | 2014-07-30 | 国家电网公司 | Optimumintelligent control system for temperature difference of winding and oil flow of main transformer |
| CN103985510A (en) * | 2014-04-09 | 2014-08-13 | 国家电网公司 | Tower-plate main transformer cooling device enabling SF6 (sulfur hexafluoride) to be directly contacted with oil and application method of tower-plate main transformer cooling device |
| CN204087989U (en) * | 2014-08-18 | 2015-01-07 | 国家电网公司 | A kind of main transformer falling film type heat-exchanger rig |
-
2014
- 2014-08-18 CN CN201410402886.2A patent/CN104157399B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS61245507A (en) * | 1985-04-24 | 1986-10-31 | Mitsubishi Electric Corp | System for utilizing exhaust heat of oil-filled stationary induction apparatus |
| CN103779049A (en) * | 2014-02-19 | 2014-05-07 | 国家电网公司 | Heat pump type main-transformation heat-exchanging device with SF6 (sulfur hexafluoride) as heat-exchanging medium and heat-exchanging method |
| CN203706798U (en) * | 2014-02-19 | 2014-07-09 | 国家电网公司 | Main transformer tube nest type cooling device with SF6 medium as coolant |
| CN203746611U (en) * | 2014-03-13 | 2014-07-30 | 国家电网公司 | Optimumintelligent control system for temperature difference of winding and oil flow of main transformer |
| CN103943317A (en) * | 2014-04-09 | 2014-07-23 | 国家电网公司 | SF6 and sprayed oil contact heat exchange main transformer cooling device and using method |
| CN103985510A (en) * | 2014-04-09 | 2014-08-13 | 国家电网公司 | Tower-plate main transformer cooling device enabling SF6 (sulfur hexafluoride) to be directly contacted with oil and application method of tower-plate main transformer cooling device |
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