CN106500996B - A kind of generator stator bar hot water stream experimental simulation device and experimental method - Google Patents
A kind of generator stator bar hot water stream experimental simulation device and experimental method Download PDFInfo
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- CN106500996B CN106500996B CN201611067911.1A CN201611067911A CN106500996B CN 106500996 B CN106500996 B CN 106500996B CN 201611067911 A CN201611067911 A CN 201611067911A CN 106500996 B CN106500996 B CN 106500996B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 207
- 238000002474 experimental method Methods 0.000 title claims abstract description 44
- 238000004088 simulation Methods 0.000 title claims abstract description 13
- 238000012360 testing method Methods 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 13
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000007405 data analysis Methods 0.000 claims description 3
- 238000011160 research Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000011835 investigation Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- 241001269238 Data Species 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
Abstract
The invention discloses a kind of generator stator bar hot water stream experimental simulation device and experimental methods, device includes stator bar, hot-water return, chilled water circuit, temperature element and data collector, wherein, the water outlet of the stator bar water inlet end connection hot-water return, chilled water circuit, the outlet pipeline of the stator bar connects major loop water pump, the major loop water pump connection hot-water return, chilled water circuit water inlet；The water inlet end of stator bar is provided with flowmeter, and hot-water return, the water inlet end of chilled water circuit and stator bar and water outlet are both provided with temperature element, and the data collector obtains the test value of all temperature elements and flowmeter.The complete Simulation field test of the present invention, all experiment processes are local operation, simple and convenient real-time high-efficiency has a very important significance the test system and criterion of research and the formation science practicality of test effect and stability the experimental factors such as further investigation flow, environment temperature, the temperature difference.
Description
Technical field
The present invention relates to a kind of generator stator bar hot water stream experimental simulation device and experimental methods.
Background technology
As one of most important component part of generator, the cooling of stator bar is always the coke of people's concern and research
Point.From initial air cooling, internal water cooling but again to hydrogen_cooling, the type of cooling of stator bar experienced very big change
Change.Due to the safe and reliable of water cooling mode and it is efficiently convenient many advantages, such as, in the system of our province 221 adjusts units, big portion
Generating set stator bar is divided to use the internal water cooling type of cooling, especially in 300MW, 600MW, 1000MW generating set of mainstream
In.
Water-cooled generator group has a whole set of water cooling system, and the electricity of emphasis monitoring cooling water is needed during operation and maintenance
The data such as conductance and pH value, total intake pressure and flow, stator winding interlayer temperature and winding leaving water temperature, especially to water quality
There is stringent control standard.DL/T1164-2012《Steam turbine generator operation guidance》Regulation enters generator hollow copper conductor
Inner cold water water quality should meet：Water quality is transparent pure, and without mechanical impurity, the pH value of water is 8.0-9.0 at 25 DEG C, water at 25 DEG C
Conductivity is 0.4us/cm~2us/cm, and copper content should be not more than 20ug/L.However, due to part power plant regional environment and mating
Not perfect and unit operation maintenance levels the weak insufficient and attention degree being arranged is inadequate, causes to be difficult to fully meet standard
To many rigors of inner cold water water quality, and higher or pH value the relatively low corrosion that can accelerate copper wire stick of conductivity and oxygen
The content for changing the sediments such as copper increases, and with the accumulation of time, is gradually adhered in copper wire stick, can not be filtered out, lead by strainer
The blocking of bar is caused, so that water flow declines and pressure rise, stator bar cooling effect cannot be satisfied requirement, the operation of bar
Temperature drift is even more than normal value, and bar can be burnt out when serious leads to compressor emergency shutdown.
Using the experiment of generator stator bar hot water stream added respectively in the case of not destroying water system in compressor emergency shutdown
Hot stator bar is cooled down to uniform temperature, by stator water system, and last water flowing cools down stator bar, and reads bar interlayer temperature
And the data such as leaving water temperature.By carrying out this experiment, the power plant such as China's electricity Zou County, state's electricity Heze City, Shandong Province are found that bar water flow
Abnormal problem, and timely and effectively being handled, but some other power plant since the discrimination of experimental data is insufficient and
The criterion for lacking authority can not provide specific processing conclusion so that this experiment denounces by power plant, influences its popularization
Using.Therefore, the quantitative criteria research for carrying out the experiment of generator stator bar hot water stream is particularly important.On the other hand, scene is real
Multiple teams and groups such as the steam turbine for being related to power plant, electrical, thermal technology are tested, the DCS for completing the parts such as cooled electric machine and the heating of auxiliary vapour is needed
Remote control, stator are intake and the real-time prison of the critical datas such as the closed procedure on the spot of the valves such as backwash, flow pressure temperature
The operation of the multipaths such as processing is transferred depending on experimental datas such as, stator leaving water temperature and interlayer temperatures, it is small that single experiment takes 4 to 5
When, the complexity of field experiment work is higher.
Invention content
The present invention is to solve the above-mentioned problems, it is proposed that a kind of generator stator bar hot water stream experimental simulation device and reality
Proved recipe method, the present invention can carry out various streams by the way that independent boiler and cold water storage cistern is arranged and coordinates water pump and heating device
Amount, the experiment of the generator thermal water flow simulation of temperature condition, for factors such as research flow, environment temperature, the experiment temperature difference to hot water
The influence of stream experiment has stronger operability.
To achieve the goals above, the present invention adopts the following technical scheme that：
A kind of generator stator bar hot water stream experimental simulation device, including stator bar, hot-water return, chilled water circuit,
Temperature element and data collector, wherein stator bar water inlet end connection hot-water return, chilled water circuit water outlet, institute
State the outlet pipeline connection major loop water pump of stator bar, the water inlet of the connection of major loop the water pump hot-water return, chilled water circuit
Mouthful；
The water inlet end of the stator bar is provided with flowmeter, the water inlet of hot-water return, chilled water circuit and stator bar
End and water outlet are both provided with temperature element, and the data collector obtains the test value of all temperature elements and flowmeter.
The hot-water return includes boiler, heating device, hot-water return water pump and valve, and the heating device is to hot water
Case is heated, and the boiler is connect by pipeline with stator bar and major loop water pump, the heating device and boiler
Connecting line on be provided with valve and hot-water return water pump.
The chilled water circuit includes cold water storage cistern and valve, and the cold water storage cistern passes through pipeline and stator bar and major loop water pump
It connects, valve is provided on the pipeline.
The temperature element is thermocouple.
The stator bar is the internal single generator stator bar without blocking.
The volume of the boiler and cold water storage cistern is more than 30L.
Based on the experimental method of above-mentioned simulator, include the following steps：
1) generator stator bar hot water stream empirical flow and the temperature difference are determined, and flow and temperature are transmitted to data acquisition
Device is simultaneously read；
2) hot-water return water pump and valve are opened, the water of boiler is heated to set temperature；
3) hot-water return water pump and valve are closed, major loop water pump and valve are opened, circulating water flow is adjusted, uses boiler
Hot water heat stator bar, until stator bar leaving water temperature reaches setting value；
4) major loop water pump is closed, switch valve opens major loop water pump, and stator line is cooled down with the circulating chilled water of cold water storage cistern
Stick, until stator bar leaving water temperature no longer changes, real-time storage temperature and data on flows；
5) it closes major loop water pump and all valves, experiment terminates；
6) data analysis is carried out, determines next group of experiment condition, repeats step 1) -5).
Beneficial effects of the present invention are：
By the way that independent boiler and cold water storage cistern is arranged and coordinates water pump and heating device, the present invention can carry out various streams
Amount, the experiment of the generator thermal water flow simulation of temperature condition, for factors such as research flow, environment temperature, the experiment temperature difference to hot water
The influence of stream experiment has stronger operability；
Simulation field experiment completely, and experimental implementation is simple and convenient, pilot process is few, experiment safety is reliable；Data acquire
Precision and real-time are high, experimental data real-time display, and analysis is more convenient and intuitive.
Description of the drawings
Fig. 1 is generator stator bar hot water stream analogue experiment installation schematic diagram of the present invention；
Wherein, 1. stator bar, 2. boilers, 3. cold water storage cisterns, 4. hot-water return water pumps, 5. major loop water pumps, 6. heating
Device, 7. boiler inlet valves, 8. cold water storage cistern inlet valves, 9. boiler flowing water Valves, 10. cold water storage cistern flowing water Valves, 11.
Stator bar flowing water Valve, 12. hot-water return valves, 13. boiler temperature elements, 14. cold water storage cistern temperature elements, 15. stators
Bar water inlet temperature element, 16. stator bars are discharged temperature element, 17. flowmeters, 18. pipelines, 19. high-speed data acquisition instrument.
Specific implementation mode：
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of 1 hot water stream experimental simulation device of generator stator bar, including stator bar 1, connection water
The pipeline 18 of case and stator bar, water pump 4 and 5, boiler 2 and cold water storage cistern 3, water tank temperature element 13 and 14, stator bar are surveyed
Warm element 15 and 16, flowmeter 17, in real time the high-speed data acquisition instrument 19 of acquisition measurement data and adjust flow direction or flow
Boiler inlet valve 7, cold water storage cistern inlet valve 8, boiler flowing water Valve 9, cold water storage cistern flowing water Valve 10, stator bar water outlet
Valve 11, hot-water return valve 12；
The stator bar is connect by water pump, pipeline and valve with water storage device；The water storage device includes one cold
Water tank and a boiler, 2 water tank capacities are more than 30L；All water loops of piping connection, including major loop and hot water return
Road；The water pump includes 2 water pumps, is respectively provided at major loop and hot-water return；The heating device is quick heating electrical appliance, is used
In the water of boiler is heated to certain temperature；The valve is located in water loop, for control water loop on off state and
Circulating direction；The measuring cell include 1 flowmeter and 4 thermocouples, for measure water loop flow, cold water storage cistern temperature,
Boiler temperature, stator bar inflow temperature, stator bar leaving water temperature；The high-speed data acquisition instrument acquisition measuring cell
5 groups of data simultaneously connect computer and are analyzed.
The stator bar is the single generator stator bar without blocking through over cleaning and inside it.
The measuring cell accuracy and sensitivity meets experiment measurement request.
The high-speed data acquisition instrument can collecting temperature and data on flows in real time, and have store function.
The experimental method of 4 iron loss experimental provision of generator of the present invention, is as follows：
1) 1 hot water stream experiment condition of generator stator bar, i.e. empirical flow, experiment temperature difference etc. are determined, by flow and temperature
Degrees of data is transmitted to high-speed data acquisition instrument 19 and finally reads computer；
2) hot-water return water pump 4 and valve 12 are opened, the water of boiler 2 is heated to set temperature；
3) hot-water return water pump 4 and valve 12 are closed, major loop water pump 5 and valve 7, valve 9, valve 11 are opened, is adjusted
Circulating water flow heats stator bar 1, until 1 leaving water temperature of stator bar reaches setting value with the hot water of boiler 2；
4) major loop water pump 5 is closed, valve 7, valve 9 are closed, Open valve 8, valve 10 open major loop water pump 5, use
The cold water circulating cooling stator bar 1 of cold water storage cistern 3, until 1 leaving water temperature of stator bar no longer changes, real-time storage temperature and stream
Measure data；
5) major loop water pump 5 and all boiler inlet valves 7, cold water storage cistern inlet valve 8, boiler flowing water Valve are closed
9, cold water storage cistern flowing water Valve 10, stator bar flowing water Valve 11, hot-water return valve 12, remove wiring, and experiment terminates；
6) data analysis is carried out, determines next group of experiment condition, repeats above step.
The operation principle of the present invention:
Have larger complexity so that unfavorable during power plant carries out based on the experiment of generator stator bar hot water stream
In carrying out in depth experimental study, a set of analogue experiment installation of major design is arranged independent boiler 2 and cold water storage cistern 3 divides
Experiment recirculated water is not provided to stator bar 1, the temperature control of boiler 2 passes through heating device 6, hot-water return water pump 4, hot water
Circuit valve 12 realizes that the pipeline 18 between stator bar 1 and boiler 2 and cold water storage cistern 3 carries out through-flow, each group reality by water pump 5
Test data by 19 real-time Transmission of high-speed data acquisition instrument to computer terminal to analyze, the open and close between valve is in each experiment
It is operated in step, all experimentations are local operation, simulate field experiment, simple and convenient real-time high-efficiency, for depth completely
Enter to study the empirical factors such as flow, environment temperature, the temperature difference to the research of experiment effect and stability and forms science practicality
Experimental system and criterion have a very important significance.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (7)
1. based on the experimental method of generator stator bar hot water stream experimental simulation device, the generator stator bar hot water
Flow experimental simulation device, including stator bar, hot-water return, chilled water circuit, temperature element and data collector, wherein described
The water outlet of stator bar water inlet end connection hot-water return, chilled water circuit, the outlet pipeline of the stator bar connect major loop
Water pump, major loop water pump connection hot-water return, chilled water circuit water inlet；
The water inlet end of the stator bar is provided with flowmeter, hot-water return, chilled water circuit and stator bar water inlet end and
Water outlet is both provided with temperature element, and the data collector obtains the test value of all temperature elements and flowmeter；
It is characterized in that：Include the following steps：
1) generator stator bar hot water stream empirical flow and the temperature difference are determined, and flow and temperature are transmitted to data collector simultaneously
It reads；
2) hot-water return water pump and valve are opened, the water of boiler is heated to set temperature；
3) hot-water return water pump and valve are closed, major loop water pump and valve are opened, circulating water flow is adjusted, with the heat of boiler
Water heats stator bar, until stator bar leaving water temperature reaches setting value；
4) major loop water pump is closed, switch valve opens major loop water pump, and stator bar is cooled down with the circulating chilled water of cold water storage cistern,
Until stator bar leaving water temperature no longer changes, real-time storage temperature and data on flows；
5) it closes major loop water pump and all valves, experiment terminates；
6) data analysis is carried out, determines next group of experiment condition, repeats step 1) -5).
2. experimental method as described in claim 1, it is characterized in that：The hot-water return includes boiler, heating device, hot water
Circuit water pump and valve, the heating device heat boiler, and the boiler passes through pipeline and stator bar and master
It is provided with valve and hot-water return water pump on the connecting line of circuit water pump connection, the heating device and boiler.
3. experimental method as described in claim 1, it is characterized in that：The chilled water circuit includes cold water storage cistern and valve, described cold
Water tank is connect by pipeline with stator bar and major loop water pump, and valve is provided on the pipeline.
4. experimental method as described in claim 1, it is characterized in that：The temperature element is thermocouple.
5. experimental method as described in claim 1, it is characterized in that：The stator bar is the internal single generator without blocking
Stator bar.
6. experimental method as claimed in claim 2, it is characterized in that：The boiler volume is more than 30L.
7. experimental method as claimed in claim 3, it is characterized in that：The cold water storage cistern volume is more than 30L.
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| CN201611067911.1A CN106500996B (en) | 2016-11-24 | 2016-11-24 | A kind of generator stator bar hot water stream experimental simulation device and experimental method |
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| CN201611067911.1A CN106500996B (en) | 2016-11-24 | 2016-11-24 | A kind of generator stator bar hot water stream experimental simulation device and experimental method |
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| CN106500996A CN106500996A (en) | 2017-03-15 |
| CN106500996B true CN106500996B (en) | 2018-10-19 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107290165B (en) * | 2017-07-04 | 2021-12-10 | 国网浙江省电力有限公司电力科学研究院 | Method for evaluating through-flow characteristics of generator stator winding insulation water conduit |
| CN107994972B (en) * | 2017-11-29 | 2020-11-27 | 哈尔滨物格电子技术有限公司 | Hot water flow test system |
| CN109520563B (en) * | 2018-10-31 | 2021-05-28 | 国网山东省电力公司电力科学研究院 | System and method for determining blockage degree of stator bar strand of internal water cooling motor |
| CN110033678B (en) * | 2019-04-22 | 2021-11-09 | 中广核核电运营有限公司 | Internal water cooling generator stator model |
| CN111025420A (en) * | 2019-11-26 | 2020-04-17 | 中广核核电运营有限公司 | Blocking test device and method for generator stator bar |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4123826B2 (en) * | 2002-05-27 | 2008-07-23 | 株式会社明電舎 | Water temperature control device |
| CN2796226Y (en) * | 2005-03-18 | 2006-07-12 | 上海鹭发电机有限公司 | Water cooler for generator stator coil cooling water system |
| RO127685A2 (en) * | 2010-12-22 | 2012-07-30 | Universitatea "Ştefan Cel Mare" Din Suceava | Stand for studying the operating characteristics of solar nitinol motors |
| CN102426466B (en) * | 2011-10-12 | 2013-11-06 | 浙江省电力公司电力科学研究院 | Power generator internal cold water quality monitoring control system based on multi-point control |
| CN103592040B (en) * | 2012-08-15 | 2016-02-03 | 广东核电合营有限公司 | A kind of temperature monitoring method of generator of nuclear power station stator winding and system |
| CN103727973A (en) * | 2014-01-09 | 2014-04-16 | 哈尔滨电机厂有限责任公司 | Method for detecting water system of large stator water-cooling steam-turbine generator |
| CN105305731B (en) * | 2015-12-02 | 2018-01-02 | 国网上海市电力公司 | A kind of water-cooled generator stator vapour proof block apparatus and its method |
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Non-Patent Citations (1)
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| 一种检测水冷定子线圈堵塞的试验方法;杨明 等;《电站系统工程》;19980531;第14卷(第3期);第55-57页 * |
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