CN101051553B - Oil circulation temperature reducing method for water and gas double condensing transformer and circular temperature reducing device - Google Patents
Oil circulation temperature reducing method for water and gas double condensing transformer and circular temperature reducing device Download PDFInfo
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- CN101051553B CN101051553B CN2007100514556A CN200710051455A CN101051553B CN 101051553 B CN101051553 B CN 101051553B CN 2007100514556 A CN2007100514556 A CN 2007100514556A CN 200710051455 A CN200710051455 A CN 200710051455A CN 101051553 B CN101051553 B CN 101051553B
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Abstract
Using totally enclosed type vortex compressor to drive environmental protective working medium, the method makes working medium circulate in independent close working loop. Based on different heat load on transformer, heat balance type expansion valve carries out automatic adjustment for flow rate of working medium dynamically, and intellective adjustment for refrigerating capacity output from heat sink so as to make transformer work at working temperature setup stably. Advantages are: high heat exchanger effectiveness; transformer oil works at stable state so as to raise work efficiency of transformer greatly, and raise service life of transformer oil and transformer as well as save energy sources.
Description
Technical field
The present invention relates to the transformer technology field, the method and the circulating cooling device of specifically a kind of water, gas double condensing transformer oil circulation cooling.
Background technology
In utility network and enterprise's electrical network, all are connected to single-phase and the three-phase alternating current electrical network, and all need magnetizing current by the electric equipment of electromagnetic induction principle work when setting up magnetic field.Transformer is exactly a kind of typical equipment, and it not only will absorb active power from electric power system, but also will absorb magnetic energy to produce the necessary alternating magnetic field of these operate as normal.Magnetizing current is not participate in power conversion, and magnetizing current flows in system in a large number, makes that line loss increases, the quality of power supply reduces, and generating, power supply, user three parts are produced harmful effect, and waste of electric energy is not wish the phenomenon that occurs.
After the elementary winding energising of transformer, the magnetic flux that coil produced flows at iron core, because iron core itself also is a conductor, will induced potential on perpendicular to the plane of the magnetic line of force, this electromotive force forms the closed-loop path and produces electric current on the section of iron core, be called " eddy current " so seem a vortex.This " eddy current " increases the loss of transformer, and the temperature rise of the iron core heating transformer of transformer is increased.We are called " iron loss " loss that is produced by " eddy current ".Want the coiling transformer need be with a large amount of copper cash in addition, these copper conductors exist resistance, and this resistance can consume certain power when electric current flow through, and this part loss often becomes heat and consumes, and we claim this loss to be " copper loss ".So the temperature rise of transformer is mainly produced by iron loss and copper loss.Iron loss and copper loss increase along with the rising of temperature again, owing to there is such vicious circle, are having a strong impact on the operating efficiency of transformer, so its power output is forever less than input power.
The temperature rise standard of China's transformer all is as the criterion for 40 ℃ with ambient temperature, so the transformer top-oil temperature generally must not be above 40 ℃+55 ℃=95 ℃.Top-oil temperature is as surpassing 95 ℃, and the temperature of its Inside coil will surpass the high-temperature capability of coil insulation thing, and is unlikely too fast aging in order to make insulation, so the supervision of regulation transformer top-oil temperature should be controlled at below 85 ℃.In 80-140 ℃ of scope, 6 ℃ of the every risings of temperature, the paper insulated life loss of transformer doubles.This rule is commonly referred to six degree rules.When the cooling device fault. cooling condition is destroyed, and the transformer operating temperature rises rapidly, and transformer insulated life loss sharply increases.The data introduction is arranged, and insulating material can be with 20 years when temperature remains on 95 degrees centigrade; 105 degrees centigrade of temperature, in about 7 years of life-span, 120 degrees centigrade of temperature are about 2 years; During 170 degrees centigrade of temperature about 10 ~ 12 days.
In order to cut the waste, improve the quality of power supply, promote the operating efficiency and the life-span of transformer, in fact the working temperature that reduces transformer is exactly to reduce the temperature of transformer cold oil, and the transformer oil falling temperature technique becomes the one preferred technique that breaks through every bottleneck.This also is the option foundation that we develop gas, the two condensation transformer oil forced circulation heat sinks of water.
Summary of the invention
The method that the objective of the invention is to develop a kind of transformer oil water, the cooling of gas double condensing forced circulation makes transformer oil remain on the water of work in the range of set temperature, the method and the circulating cooling device of gas double condensing transformer oil circulation cooling.
The method of the two condensation transformer oil of a kind of aqueous vapor of the present invention is: utilize the totally enclosed type screw compressor to drive the environmental protection working media, it is circulated in the work loop of independent sealing, utilize the difference of thermal balance type expansion valve according to the transformer heat load, automatically carrying out dynamic working medium flow regulates, regulate the output of heat sink refrigerating capacity intelligently, thereby make under the stable working temperature that is operated in our setting of transformer.
The circulating cooling device of the two condensation transformer oil of a kind of aqueous vapor of the present invention, comprise: transformer, two oil pipes respectively with the oil groove of transformer under hydraulic fluid port, the oil-in of cooling main frame, transformer rushes down pressure pipe lower curtate triple valve, cooling main frame cooling-oil outlet links to each other, the connecting mode of cooling main frame is as follows: compressor 1, unidirectional valve 2 is advanced in the outlet of 4 exhaust outlet, 5 and gs-oil separator 3, air inlet takes copper tube two ends welding manner to connect on 6, the gas outlet 3 of gs-oil separator, 6 right side outlet is in parallel takes copper tube two ends welding manner to be connected with the air inlet of plate heat exchanger 7, and the gas outlet of plate heat exchanger 7 takes the copper tube welding manner to be connected with aerial condenser 8 air inlets.On the connection copper pipe between the air inlet of exhaust outlet of compressor and plate heat exchanger 7, there is wooden fork shape four-way bypass pipe to weld with high pressure gauge 24, high pressure valve 26, dual pressure controller 25 respectively.Outlet of the high-voltage tube of liquid reservoir 13 and plate heat exchanger 9 lower-left imports are companys of weldering mutually, and filter 12, two-way in parallel two expansion valves 10,11 that freeze are housed therebetween successively, and the flow direction from right to left; Another high-voltage tube import (left 2 tunnel) of liquid reservoir and aerial condenser 8 outlet welding; The low-pressure admission mouth of pipe of liquid reservoir 13 and plate heat exchanger 9 upper left gas outlets are the company of weldering mutually, the low pressure of liquid reservoir 13 gentle branch 14 air inlets of the mouth of pipe company of weldering mutually of giving vent to anger.Gas divides the air entry weldering of 14 gas outlet and two compressors to connect.All devices all connect with No. two electrolysis copper tubes, and except that the sealing of screw threads for fastening tapered end face was adopted at filter 12 two ends, all the other all were money base copper arc welding electrode welded seal.
The two medium condensers of water source and air are housed in the cooling main frame of the two condensation transformer oil circulating cooling devices of aqueous vapor.
In the cooling main frame of the two condensation transformer oil circulating cooling devices of aqueous vapor at least two refrigerant compressors of parallel connection are housed.
In the cooling main frame of the two condensation transformer oil circulating cooling devices of aqueous vapor at least two fast board-like heat exchangers are housed.
In the cooling main frame of the two condensation transformer oil circulating cooling devices of aqueous vapor expansion valve is housed.
The transformer oil cooling is achieved in that at first entering gs-oil separator 3,6 from the HTHP working medium (gaseous state) of compressor 1,4 outflows carries out Oil-gas Separation, give low pressure line with the unnecessary liquid compression machine oil loopback that mixes in the Working medium gas, sucked back by compressor, the high temperature refrigerant of gaseous state enters first plate heat exchanger 7 condense thermal energy is conducted feedwater, can do life fully and warm up usefulness with hot water or system.What flow out first plate heat exchanger still has the overheated high-pressure working medium of part upwards, enters aerial condenser 8 and carries out the B-grade condensation heat radiation, gives air with heat conduction, and working medium becomes the liquid of high pressure lower temperature.High pressure low temperature working medium is crossed reservoir through 10,11 throttlings of thermal balance type expansion valve, become low-temp low-pressure gas liquid mixture working medium and enter second plate heat exchanger, the heat energy that the low-temp low-pressure liquid working substance fully absorbs in the transformer oil becomes gas phase working medium, the low-temp low-pressure gas working medium flows into liquid reservoir 13 successively, gas divides 14, and the air intake duct that enters compressor again enters circulation next time.Cryogenic transformer oil after the quilt heat absorption is delivered to cold energy in the transformer conservator lowers the temperature to transformer, and the transformer oil that discharged cold energy is drawn back the refrigeration plate heat exchanger 9 of heat sink again by hot oil pump 21, finished the cool cycles of transformer oil in unit.When the transformer heat load is little, has only a compressor in work, only excessive in the transformer heat load, when single compressor work is not enough to cool in the design temperature scope, second compressor just starts the participation refrigeration cool-down, and second compressor is the carrying out safety backup machine to a greater extent, when that is to say a compressor fault, another compressor still can drive the heat sink operate as normal, and can not cause temperature of oil in transformer too high.When reaching default cooling temperature; the heat sink autostop is awaited orders; when oily temperature rises to the setting working temperature; heat sink can at first be opened short compressor running time; shut down when requiring when reaching once more; the compressor that time at first out of service is long, so the equilibrium operating of compressor is guaranteed in circulation.
The method of water of the present invention, gas double condensing transformer oil circulation cooling and the advantage of circulating cooling device are:
1. utilize the heat of water and air the two poles of the earth condensation absorption transformer oil, the cooling-down effect highly significant, oily Wen Yuegao cooling-down effect is good more, and 60 ℃ are down warm to oil, and the refrigeration efficiency ratio can reach more than 7.0.
2. adopt board-like stainless steel heat exchanger, heat exchange area is big, and the heat exchange efficiency height can be protected oily pure.
3. adopt double-compressor parallel refrigeration, between unit and two-shipper mode of operation, switch automatically according to the heat load size, big with electric loading, oil warm when high double-compressor work simultaneously, with electric loading hour, the oil temperature is low, a compressor operating.
4. have safe complementary function between the double-compressor, have only when two compressor simultaneous faultss, heat sink is cisco unity malfunction, has improved the reliability of cooling system.
5. with the transformer interface close friend, substantially do not change the structure of transformer, only need to rush down the pressure pipe bottom and increase a three-way connection at transformer, for providing the injection channel of a cold oil, heat sink gets final product, the following oilhole of transformer and the oil-in of heat sink link to each other, keep the loop unimpeded, start promptly can be the transformer oil cooling.
5. can provide the whole year free hot water to supply the warm domestic water of system; The rate of energy height, energy-saving effect is remarkable.
6. use the environmental protection refrigerant, do not destroy atmospheric ozone layer, the human earth of depending on for existence of protection.
7. the transformer oil temperature is worked under stable status, and transformer ground operating efficiency improves greatly, and the oil of transformer and improving greatly the useful life of transformer has been saved a large amount of energy.
Illustrate its usage economy analysis
Owing to improved power transformation efficient, reduced energy consumption, prolonged the useful life of transformer, the economic interests that the hanging net operation of this project brings for the power transmission and transformation industry are obvious.
Simply calculate the benefit of utilizing water, gas double condensing transformer oil forced circulation heat sink to bring by the transformer of a 40000kVA: the transformer of a 40000kVA, its traditional heat-dissipating loss is 210kW, autogamy 5kW oil circulating pump.Adopt a 10kW heat sink can reach the cooling purpose, input power on average is no more than 8kW, and this can save more than the 200kW; (60 ℃ with under the warm operating mode that oils owing to the heat sink good refrigeration effect, this model single-unit cold can be up to more than the 70kW), will inevitably reduce " iron loss " and " copper loss " of transformer greatly, improve the power transformation efficient of transformer, if by raising the efficiency 1%, this can save 400kW; Two totals can be saved more than the 600kW, and by 0.5 yuan of calculating of every degree electricity, the energy-saving efficiency that water, gas double condensing transformer oil forced circulation heat sink are brought can increase by 7200 yuans every day, and year increases benefit 26.28 ten thousand yuan.By 6,000,000 yuan of every transformer prices, ordinary life 20 years, but with life-saving behind the heat sink more than 10 years, a year life-span cost can reduce by 100,000 yuan.In 15 years heat sink life-spans, heat sink is used in the benefit total life cycle that the transformer cooling of a 40000kVA increased up to 544.2 ten thousand yuan.
Description of drawings
Fig. 1 is the circulating cooling device schematic diagram.
Fig. 2 is water, gas double condensing transformer oil forced circulation heat sink schematic diagram.
Embodiment
According to Fig. 1, shown in Figure 2:
Water, gas double condensing transformer oil forced circulation heat sink system comprise: cooling main frame 29, oil-filled transformer 27, connection oil pipe 28 3 parts are formed.
Cooling main frame: mainly by scroll compressor 1, scroll compressor 4, unidirectional valve 2, unidirectional valve 5, gs-oil separator 3, gs-oil separator 6, plate heat exchanger 7 (left plate heat exchanger in the schematic diagram), plate heat exchanger 9 (right panel formula heat exchanger in the schematic diagram), reservoir 13, expansion valve 10, expansion valve 11, dual pressure controller 25, high pressure gauge 24, high pressure valve 26, low pressure controller 16, low-pressure meter 17, low pressure valve 15, aerial condenser 8 (comprises fan electromotor, fan, finned fan coil), oil circulating pump 21 and each connecting line are formed.
Connected mode between each parts is as follows:
All devices all connect with No. two electrolysis copper tubes, and except that the sealing of screw threads for fastening tapered end face was adopted at filter 12 two ends, all the other all were money base copper arc welding electrode welded seal.The exhaust outlet (upper outlet among the figure) of compressor (among the figure 1,4) advances unidirectional valve (2,5) and goes up air inlet with gs-oil separator (3,6) and take copper tube two ends welding manner to be connected, the gas outlet of gs-oil separator (3,6 right side outlets) is in parallel takes copper tube two ends welding manner to be connected with the air inlet (the lower-left circle of left plate heat exchanger in the schematic diagram) of plate heat exchanger 7, and the gas outlet of plate heat exchanger 7 (the upper left circle of left plate heat exchanger in the schematic diagram) takes the copper tube welding manner to be connected with aerial condenser 8 air inlets.On the connection copper pipe between the air inlet of exhaust outlet of compressor and plate heat exchanger 7, there is wooden fork shape four-way bypass pipe to weld with high pressure gauge 24, high pressure valve 26, dual pressure controller 25 respectively.
The high-voltage tube of liquid reservoir 13 outlet (right 2 tunnel) and plate heat exchanger 9 lower-left imports are companys of weldering (right panel formula heat exchanger lower-left circle in the schematic diagram) mutually, and filter 12, two-way in parallel two expansion valves 10,11 that freeze are housed therebetween successively, and the flow direction from right to left; Another high-voltage tube import (left 2 tunnel) of liquid reservoir and aerial condenser 8 outlet welding; The low-pressure admission mouth of pipe of liquid reservoir 13 (liquid reservoir the first from left road among the figure) and plate heat exchanger 9 upper left gas outlets are the company of weldering mutually, the low pressure of liquid reservoir 13 mouth of pipe (liquid reservoir right a tunnel among the figure) gentle branch 14 air inlets (right wing) company of weldering mutually of giving vent to anger.Gas divides the air entry weldering of 14 gas outlet (left road) and two compressors to connect.
In cooling machine when work: the HTHP working medium (gaseous state) that flows out from compressor 1,4 at first enters gs-oil separator 3,6 and carries out Oil-gas Separation, give low pressure line with the unnecessary liquid compression machine oil loopback that mixes in the Working medium gas, sucked back by compressor, the high temperature refrigerant of gaseous state enters first plate heat exchanger 7 condense thermal energy is conducted feedwater, can do life fully and warm up usefulness with hot water or system.What flow out first plate heat exchanger still has the overheated high-pressure working medium of part upwards, enters aerial condenser 8 and carries out the B-grade condensation heat radiation, gives air with heat conduction, and working medium becomes the liquid of high pressure lower temperature.High pressure low temperature working medium is crossed reservoir through 10,11 throttlings of thermal balance type expansion valve, become low-temp low-pressure gas liquid mixture working medium and enter second plate heat exchanger, the heat energy that the low-temp low-pressure liquid working substance fully absorbs in the transformer oil becomes gas phase working medium, the low-temp low-pressure gas working medium flows into liquid reservoir 13 successively, gas divides 14, and the air intake duct that enters compressor again enters circulation next time.Cryogenic transformer oil after the quilt heat absorption is delivered to cold energy in the transformer conservator lowers the temperature to transformer, and the transformer oil that discharged cold energy is drawn back the refrigeration plate heat exchanger 9 of heat sink again by hot oil pump 21, finished the kind of refrigeration cycle of transformer oil in unit.When the transformer heat load is little, has only a compressor in work, only excessive in the transformer heat load, when single compressor work is not enough to cool in the design temperature scope, second compressor just starts the participation refrigeration cool-down, and second compressor is the carrying out safety backup machine to a greater extent, when that is to say a compressor fault, another compressor still can drive the heat sink operate as normal, and can not cause temperature of oil in transformer too high.When reaching default cooling temperature; the heat sink autostop is awaited orders; when oily temperature rises to the setting working temperature; heat sink can at first be opened short compressor running time; shut down when requiring when reaching once more; the compressor that time at first out of service is long, so the equilibrium operating of compressor is guaranteed in circulation.
Claims (3)
1. the method for the two condensation transformer oil of an aqueous vapor, it is characterized in that: utilize the totally enclosed type screw compressor to drive the environmental protection working media, it is circulated in the work loop of independent sealing, utilize the difference of thermal balance type expansion valve according to the transformer heat load, automatically carrying out dynamic working medium flow regulates, regulate the machine-processed cold output of cooling intelligently, thereby make under the stable working temperature that is operated in our setting of transformer, its flow process is as follows: from compressor (1,4) the HTHP gaseous working medium of Liu Chuing at first enters gs-oil separator (3,6) carry out Oil-gas Separation, give low pressure line with the unnecessary liquid compression machine oil loopback that mixes in the Working medium gas, sucked back by compressor, the high temperature refrigerant of gaseous state enters first plate heat exchanger (7) condense thermal energy is conducted feedwater, can do life fully and warm up usefulness with hot water or system; Flow out the first board-like overheated high-pressure working medium of part that still has of changing ripe device and make progress, enter aerial condenser (8) and carry out the B-grade condensation heat radiation, give air with heat conduction, working medium becomes the liquid of high pressure lower temperature; High pressure low temperature working medium is crossed liquid reservoir through thermal balance type expansion valve (10,11) throttling, become low-temp low-pressure gas liquid mixture working medium and enter second plate heat exchanger, the heat energy that the low-temp low-pressure liquid working substance fully absorbs in the transformer oil becomes gas phase working medium, the low-temp low-pressure gas working medium flows into liquid reservoir (13), gas-liquid separator (14) successively, and the air intake duct that enters compressor again enters circulation next time; Cryogenic transformer oil after the quilt heat absorption is delivered to cold energy in the transformer conservator lowers the temperature to transformer, the transformer oil that discharged cold energy is drawn back refrigeration second plate heat exchanger (9) of heat sink again by hot oil pump (21), finished the cool cycles of transformer oil in unit.
2. the circulating cooling device of the two condensation transformer oil of an aqueous vapor, comprise: by cooling main frame (29), oil-filled transformer (27), connecting oil pipe (28) three parts forms, to be connected oil pipe (28) with one continuous for hydraulic fluid port and the oil-in of cooling main frame (29) under the oil groove of oil-filled transformer (27), to be connected oil pipe (28) with another continuous for rush down pressure pipe bottom triple valve and the cooling-oil outlet of cooling main frame (29) of oil-filled transformer (27), it is characterized in that: the connecting mode of cooling main frame (29) is as follows: the exhaust outlet of first compressor (1) and first unidirectional valve (2), first unidirectional valve (2) takes copper tube two ends welding manner to be connected respectively with the last air inlet of first gs-oil separator (3), the exhaust outlet of second compressor (4) and second unidirectional valve (5), second unidirectional valve (5) takes copper tube two ends welding manner to be connected respectively with the last air inlet of second gs-oil separator (6); The gas outlet parallel connection of first gs-oil separator (3) and second gs-oil separator (6) takes copper tube two ends welding manner to be connected with the air inlet of first plate heat exchanger (7) then, and the gas outlet of first plate heat exchanger (7) takes the copper tube welding manner to be connected with the air inlet of aerial condenser (8); On the connection copper pipe between the air inlet of the gas outlet of first gs-oil separator (3) and second gs-oil separator (6) and first plate heat exchanger (7), there is wooden fork shape four-way bypass pipe respectively and high pressure gauge (24), high pressure valve (26), dual pressure controller (25) welding; The high-voltage tube outlet of liquid reservoir (13) and the lower-left import of second plate heat exchanger (9) be the company of weldering mutually, and filter (12), two-way two refrigeration expansion valves (10,11) in parallel are housed therebetween successively, flows to from right to left; The outlet welding of the high-voltage tube import of liquid reservoir (13) and aerial condenser (8); The upper left gas outlet of the low-pressure admission mouth of pipe of liquid reservoir (13) and second plate heat exchanger (9) is the company of weldering mutually, the give vent to anger air inlet company of weldering mutually of the gentle liquid/gas separator of the mouth of pipe (14) of the low pressure of liquid reservoir (13); The gas outlet of gas-liquid separator (14) and the weldering of the air entry of two compressors connect; All devices all connect with No. two electrolysis copper tubes, and except that the sealing of screw threads for fastening tapered end face was adopted at filter (12) two ends, all the other all were money base copper arc welding electrode welded seal.
3. the two condensation transformer oil circulating cooling devices of aqueous vapor according to claim 2 is characterized in that: the two medium condensers of water source and air are housed in the cooling main frame.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007100514556A CN101051553B (en) | 2007-02-02 | 2007-02-02 | Oil circulation temperature reducing method for water and gas double condensing transformer and circular temperature reducing device |
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| CN2007100514556A CN101051553B (en) | 2007-02-02 | 2007-02-02 | Oil circulation temperature reducing method for water and gas double condensing transformer and circular temperature reducing device |
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| CN101051553A CN101051553A (en) | 2007-10-10 |
| CN101051553B true CN101051553B (en) | 2011-02-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| PL2104116T3 (en) * | 2008-03-12 | 2017-09-29 | Alstom Transport Technologies | Oil cooling system, particularly for transformers feeding traction electric motors, transformer with said system and method for determining the cooling fluid flow in a cooling system |
| CN102250702A (en) * | 2011-06-23 | 2011-11-23 | 武汉朗肯节能技术有限公司 | Intelligent bidirectional temperature-controlled beer fermentation broth recycling device |
| CN103726949B (en) * | 2013-12-27 | 2015-06-24 | 天津大学 | Double-pressure double-loop multistage-expansion internal combustion engine waste heat recovery system |
| US10081226B2 (en) * | 2016-08-22 | 2018-09-25 | Bergstrom Inc. | Parallel compressors climate system |
| CN108920774B (en) * | 2018-06-11 | 2020-07-03 | 西南交通大学 | Method for monitoring internal temperature of oil-immersed transformer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2030367U (en) * | 1988-04-22 | 1989-01-04 | 常州片式散热器厂 | Fin type radiator for transformer |
| CN2133909Y (en) * | 1992-07-23 | 1993-05-19 | 曹文辉 | Water cooling purifier for oil immersion transformer |
| CN1083580A (en) * | 1992-09-04 | 1994-03-09 | 沈阳电业局 | The power transformer energy consumption utilization system |
| US5336847A (en) * | 1991-05-09 | 1994-08-09 | Fuji Electric Co., Ltd. | Stationary induction apparatus containing uninflammable insulating liquid |
| CN201036121Y (en) * | 2007-02-02 | 2008-03-12 | 武汉朗肯节能技术有限公司 | Oil circulation cooling device of water, gas dual-condensing transformer |
-
2007
- 2007-02-02 CN CN2007100514556A patent/CN101051553B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2030367U (en) * | 1988-04-22 | 1989-01-04 | 常州片式散热器厂 | Fin type radiator for transformer |
| US5336847A (en) * | 1991-05-09 | 1994-08-09 | Fuji Electric Co., Ltd. | Stationary induction apparatus containing uninflammable insulating liquid |
| CN2133909Y (en) * | 1992-07-23 | 1993-05-19 | 曹文辉 | Water cooling purifier for oil immersion transformer |
| CN1083580A (en) * | 1992-09-04 | 1994-03-09 | 沈阳电业局 | The power transformer energy consumption utilization system |
| CN201036121Y (en) * | 2007-02-02 | 2008-03-12 | 武汉朗肯节能技术有限公司 | Oil circulation cooling device of water, gas dual-condensing transformer |
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Denomination of invention: Oil circulation temperature reducing method for water and gas double condensing transformer and circular temperature reducing device Effective date of registration: 20120824 Granted publication date: 20110202 Pledgee: Wuhan rural commercial bank Limited by Share Ltd Optics Valley branch Pledgor: Langken Energy Saving Technology Co., Ltd., Wuhan Registration number: 2012990000470 |
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Granted publication date: 20110202 Termination date: 20170202 |