CN102035307B - Evaporative cooling system for water-wheel generator with master-slave condenser - Google Patents
Evaporative cooling system for water-wheel generator with master-slave condenser Download PDFInfo
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- CN102035307B CN102035307B CN2010106107432A CN201010610743A CN102035307B CN 102035307 B CN102035307 B CN 102035307B CN 2010106107432 A CN2010106107432 A CN 2010106107432A CN 201010610743 A CN201010610743 A CN 201010610743A CN 102035307 B CN102035307 B CN 102035307B
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Abstract
The invention relates to an evaporative cooling system for a water-wheel generator with a master-slave condenser. A master condenser, a slave condenser and a water tank form a master-slave condenser, wherein the master condenser and the slave condenser are independent in respective primary cooling loops, a secondary cooling water system formed by the master and the slave condensers and the water tank is communicated, and the master condenser and the slave condenser and the water tank form a secondary cooling loop. The evaporative cooling system ensures that a cooling loop of a stator bar and a cooling loop of a confluence copper ring and an interelectrode connecting line are independent and do not influence one another, and share one secondary cooling loop. By the evaporative cooling system, the problems that accidents of motor cooling are easy to occur due to the mutual running of media in a master loop and a slave loop between the two loops is solved, and the problem of the arrangement of evaporative cooling elements in a motor is solved simultaneously.
Description
Technical field: the present invention relates to a kind of huge water wheel generator evaporative cooling system.
Background technology: the above large-sized water turbine generator (being called as huge unit) of 600MW has three kinds of types of cooling in the world at present, and one is full cooling air mode; Two is vapor cooling system; Three be the internal water cooling mode, wherein have in the vapor cooling system not comprise collector ring and interpolar connecting line, also has to comprise; Because spatial constraints can not extraly install condenser additional, stator bar cooling circuit and collector ring and interpolar connecting line cooling circuit partly are UNICOMs at condenser in comprising; Not not independently; Interfere with each other, be prone to cause collector ring and interpolar connecting line loop medium not enough, break down.
Summary of the invention: the purpose of this invention is to provide a kind of reliable and stable; The stator bar cooling circuit and the independent operating between copper ring and the interpolar connecting line cooling circuit that confluxes; The hydraulic generator evaporative cooling system that is independent of each other with major-minor condenser; Technical scheme of the present invention is: it is characterized in that: the conflux cooling device of copper ring and interpolar connecting line of cooling device and the generator that it mainly comprises stator bar; The cooling device of stator bar connects the main condenser other end by main liquid back pipe one end and connects in the bottom; The other end connects the main liquid collecting jar of bottom, be connected by stator bar between main liquid collecting jar and the main gas collecting tank, thereby main return tube two ends connects cooling circuit of independent loops of main condenser and main gas collecting tank formation stator bar respectively; The generator cooling device that copper ring is connected with interpolar that confluxes: auxiliary condenser connects auxilliary gas collecting tank; Auxilliary gas collecting tank is connected respectively by copper ring, interpolar connecting line assists back flow container; Assisting back flow container is connected with auxilliary liquid back pipe again; Auxilliary liquid back pipe knot is got back to auxiliary condenser, constitutes cooling circuit of independent loops of conflux copper ring and interpolar connecting line.Be water tank between main condenser and the auxiliary condenser, make the cool cycles of stator bar isolated with the cool cycles of conflux copper ring and interpolar connecting line, independent mutually.
Main condenser of the present invention, auxiliary condenser and water tank constitute a major-minor condenser; In a cooling circuit separately, be independently between main condenser, the auxiliary condenser wherein; The secondary cooling water system that forms with water tank communicates, and they constitute secondary coolant circuit, and is independent separately between the cooling circuit of this system's assurance stator bar and the cooling circuit of conflux copper ring and interpolar connecting line; Be independent of each other their shared secondary coolant circuits.The present invention had both solved medium the scurrying mutually between two loops in major loop and the auxilliary loop, was prone to cause the problem of motor cooling accident, had also solved the Layout Problem of evaporative cooling element in motor simultaneously.The present invention has carried out proving test on the evaporative cooling test platform of Big Motor Reserch Academy, Ha Erbin City motor room; Six roots of sensation test wire rod is adopted in test, and test current is 3000A to a 7500A scope, and main liquid back pipe flow is between the 0.05L/s to 0.15L/s; Line rod temperature in the major loop remains on below 70 ℃; Cooling medium consumption and line rod temperature are highly stable, and corresponding with it collector ring test current is also in 3000A to 7500A scope, and auxilliary liquid back pipe flow is that (copper ring that confluxes is corresponding shorter between the 0.01L/s to 0.02L/s; Capacity is less relatively); Conflux the temperature of copper ring below 60 ℃, and cooling medium consumption and collector ring temperature are highly stable, can satisfy the long-term safety reliability service of motor; The cooling water flow of major-minor condenser is 4.85m3/h; Condenser adopts major-minor condenser to be suitable for the actual requirement that generator adopts the evaporation cooling technique power station, the layout of various cooling elements is provided to install very easily guarantee that the application on huge water wheel generator is laid a good foundation to evaporation cooling technique.
Description of drawings:
Fig. 1 is an overall structure cutaway view of the present invention
Fig. 2 looks cutaway view for the left side of Fig. 1
Embodiment:
The present invention as shown in Figure 1 is a kind of hydraulic generator evaporative cooling system with major-minor condenser; It is characterized in that: the conflux cooling device of copper ring and interpolar connecting line of cooling device and the generator that it mainly comprises stator bar; The cooling device of stator bar connects the main liquid collecting jar 7 that main condenser 1 other end connects the bottom by main liquid back pipe 12 1 ends; Be connected by stator bar 6 between main liquid collecting jar 7 and the main gas collecting tank 5, thereby main return tube 13 two ends connect cooling circuit of independent loops that main condenser 1 and main gas collecting tank 5 constitute stator bars respectively; The generator cooling device that copper ring is connected with interpolar that confluxes: auxiliary condenser 9 connects auxilliary gas collecting tank 2; Auxilliary gas collecting tank 2 is connected respectively by the copper ring 3 that confluxes, interpolar connecting line 4 assists back flow container 8; Assisting back flow container 8 is connected with auxilliary liquid back pipe 11 again; Auxilliary liquid back pipe 11 is got back to auxiliary condenser 9, constitutes cooling circuit of independent loops of conflux copper ring and interpolar connecting line, is water tank 10 between main condenser 1 and the auxiliary condenser 9; Make the cool cycles of stator bar isolated with the cool cycles of conflux copper ring and interpolar connecting line, independent mutually.
Before the motor operation, inject evaporative cooling medium by main condenser 1 and auxiliary condenser 9 earlier, evaporating temperature is between 55 ℃ to 60 ℃ under this medium normal pressure, and the liquid level of stator bar is for surpassing the straight line height of line rod; The height of collector ring and interpolar connecting line is 500mm above its peak, when motor moves, and generator stator bar and conflux copper ring and interpolar connecting line heating up; When their temperature reached the evaporating point temperature of evaporative cooling medium, a coolant start vaporizer was for main cooling circuit; Become steam state after the medium evaporation in the line rod 6, rise to main gas collecting tank 5 along the loop, the gas in the not collinear rod converges the back at this and enters into main condenser 1 along main return tube 13; Liquefy gets into main liquid collecting jar 7 downwards along main liquid back pipe 12 after cooling, flows into different connecting line rods 6 in 7 minutes through main liquid collecting jar, continues cooling line rod; Accomplish a cool cycles, for auxilliary cooling circuit, as shown in Figure 2; Confluxing becomes steam state after the media evaporation in copper ring 3 and the interpolar connecting line 4, rises to auxilliary gas collecting tank 2 along the loop, and conflux gas in copper ring and the interpolar connecting line of difference converges the back at this and enters into auxiliary condenser 9 along auxilliary return tube 14; Liquefy flowed into different connection collector rings 3 and interpolar connecting line 4 along the auxilliary liquid collecting jar 8 of auxilliary liquid back pipe 11 entering downwards in 8 minutes through auxilliary liquid collecting jar after cooling, continued to cool off conflux copper ring and interpolar connecting line; Accomplish a cool cycles, this moment is because major-minor cooler makes the coolant of major loop and the medium in the auxilliary loop isolated; Independent mutually, do not disturb mutually, can not cause medium to flow mutually; The medium in a certain loop is lacked, and the problem that the causes motor local temperature is too high is owing to adopted major-minor condenser; Solve the cooling of stator bar simultaneously and the cooling of conflux copper ring and interpolar connecting line with one group of Inlet and outlet water, solved the Layout Problem of cooling element in motor.
Claims (1)
1. hydraulic generator evaporative cooling system with major-minor condenser; It is characterized in that: the conflux cooling device of copper ring and interpolar connecting line of cooling device and the generator that it mainly comprises stator bar; The cooling device of stator bar connects main condenser (1) by main liquid back pipe (12) one ends; The other end connects the main liquid collecting jar (7) of bottom; Be connected by stator bar (6) between main liquid collecting jar (7) and the main gas collecting tank (5), main return tube (13) two ends connect respectively main condenser (1) with main gas collecting tank (5) thus constitute cooling circuit of independent loops of stator bar; The conflux cooling device of copper ring and interpolar connecting line of generator: auxiliary condenser (9) is connected auxilliary gas collecting tank (2); Auxilliary gas collecting tank (2) is connected respectively by the copper ring that confluxes (3), interpolar connecting line (4) assists back flow container (8); Assisting back flow container (8) is connected with auxilliary liquid back pipe (11) again; Auxilliary liquid back pipe (11) is got back to auxiliary condenser (9), constitutes cooling circuit of independent loops of conflux copper ring and interpolar connecting line, is water tank (10) between main condenser (1) and the auxiliary condenser (9); Make the cool cycles of stator bar isolated with the cool cycles of conflux copper ring and interpolar connecting line, independent mutually.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106107432A CN102035307B (en) | 2010-12-29 | 2010-12-29 | Evaporative cooling system for water-wheel generator with master-slave condenser |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010106107432A CN102035307B (en) | 2010-12-29 | 2010-12-29 | Evaporative cooling system for water-wheel generator with master-slave condenser |
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| CN102035307A CN102035307A (en) | 2011-04-27 |
| CN102035307B true CN102035307B (en) | 2012-07-04 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969838B (en) * | 2012-10-31 | 2014-08-27 | 中国科学院电工研究所 | Forced circulation evaporation cooling device of hydro-generator stator busbar |
| CN104009588B (en) * | 2014-06-18 | 2016-07-13 | 东方电气集团东方电机有限公司 | Vertical shaft motor evaporative cooling system |
| CN108092462B (en) * | 2018-01-11 | 2023-07-28 | 西华大学 | Inner and outer cooling structure of annular lead copper ring of salient pole synchronous motor confluence |
| CN108899725B (en) * | 2018-07-05 | 2024-03-22 | 成都工业学院 | Converging ring for high-temperature and high-humidity environment |
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| CN2852498Y (en) * | 2005-11-15 | 2006-12-27 | 东方电机股份有限公司 | Evaporating, cooling and circulating device for hydro-turbo generator stator slip-ring |
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| CN1293691C (en) * | 2003-11-14 | 2007-01-03 | 中国科学院电工研究所 | Forced circulation evaporation cooling device of hydraulic generator stator |
| CN101728896A (en) * | 2008-10-28 | 2010-06-09 | 西门子公司 | Arrangement for cooling of an electrical machine |
| CN101847899A (en) * | 2010-06-04 | 2010-09-29 | 中国科学院电工研究所 | Internal evaporating, cooling and circulating system of motor stator winding |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101595353B (en) * | 2006-10-10 | 2012-04-25 | 开利公司 | Dual-circuit series counterflow chiller with intermediate waterbox |
| WO2009062035A1 (en) * | 2007-11-08 | 2009-05-14 | Earth To Air Systems, Llc | Double dx hydronic system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1251386C (en) * | 2002-05-30 | 2006-04-12 | 中国科学院电工研究所 | Device for recycling exhaust air and cooling fluid of condensator for evaporative cooling electric motor |
| CN1293691C (en) * | 2003-11-14 | 2007-01-03 | 中国科学院电工研究所 | Forced circulation evaporation cooling device of hydraulic generator stator |
| CN2852498Y (en) * | 2005-11-15 | 2006-12-27 | 东方电机股份有限公司 | Evaporating, cooling and circulating device for hydro-turbo generator stator slip-ring |
| CN2852509Y (en) * | 2005-11-15 | 2006-12-27 | 东方电机股份有限公司 | Combined circulating device for hydro-turbo generator stator evaporating and cooling |
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| CN102035307A (en) | 2011-04-27 |
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