CN106500996A - A kind of generator stator bar hot water stream experimental simulation device and experimental technique - Google Patents
A kind of generator stator bar hot water stream experimental simulation device and experimental technique Download PDFInfo
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- CN106500996A CN106500996A CN201611067911.1A CN201611067911A CN106500996A CN 106500996 A CN106500996 A CN 106500996A CN 201611067911 A CN201611067911 A CN 201611067911A CN 106500996 A CN106500996 A CN 106500996A
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses a kind of generator stator bar hot water stream experimental simulation device and experimental technique, device includes stator bar, hot-water return, chilled water circuit, temperature element and data acquisition unit, wherein, the stator bar water inlet end connection hot-water return, the outlet of chilled water circuit, the outlet pipeline connection major loop water pump of the stator bar, the major loop water pump connection hot-water return, the water inlet of chilled water circuit；The water inlet end of stator bar is provided with effusion meter, and the water inlet end of hot-water return, chilled water circuit and stator bar and water side are provided with temperature element, and the data acquisition unit obtains the test value of all temperature elements and effusion meter.Simulation field test completely of the invention, all processs of the test are local operation, simple and convenient real-time high-efficiency, for the experimental factors such as further investigation flow, ambient temperature, the temperature difference are of great significance to the test system and criterion tool of the research and the practicality of formation science of test effect and stability.
Description
Technical field
The present invention relates to a kind of generator stator bar hot water stream experimental simulation device and experimental technique.
Background technology
Used as one of most important ingredient of electromotor, the cooling of stator bar is always Jiao 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 water cooling mode safe and reliable and efficiently convenient many advantages, such as, adjust in units in the system of our province 221, big portion
Distribution group of motors stator bar adopts the internal water cooling type of cooling, especially in 300MW, 600MW, 1000MW generating set of main flow
In.
Water-cooled generator group has a whole set of water cooling system, needs emphasis to monitor the electricity of cooling water during operation 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 strict control standard.DL/T1164-2012《Steam turbine generator operation guidance》Regulation enters electromotor hollow copper conductor
Inner cold water water quality should meet：Water quality is transparent pure, mechanical impurity, when 25 DEG C the pH value of water be 8.0-9.0, water when 25 DEG C
Electrical 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 supporting
The weakness of the imperfection of setting and unit operation maintenance levels is not enough with attention degree not enough, causes it is difficult to fully meet standard
Many rigors to inner cold water water quality, and the low corrosion that can accelerate copper cash rod of the higher or pH value of electrical conductivity and oxygen
The content for changing the precipitate such as copper increases, and accumulation over time, is gradually adhered in copper cash rod, it is impossible to filtered by filter screen, led
The blocking of bar is caused, so that discharge declines and pressure rise, stator bar cooling effect cannot meet requirement, the operation of bar
Temperature drift is even more than normal value, and can burn out bar when serious causes compressor emergency shutdown.
Using generator stator bar hot water stream experiment be do not destroy water system in compressor emergency shutdown in the case of, respectively plus
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.Bar discharge is found that by carrying out the power plant such as this experiment, China's electricity Zou County, state's electricity Heze City, Shandong Province
Abnormal problem, and timely and effectively being processed, but some other power plant as the discrimination of experimental data is not enough and
Lack the criterion of authority, it is impossible to provide so that the experiment suffers that power plant denounces, affect which to promote
Application.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, electric, thermal technology are tested, the DCS for completing the part such as cooled electric machine and the heating of auxiliary vapour is needed
The real-time prison of the critical datas such as the closed procedure on the spot of valve, the flow pressure temperature such as remote control, stator water inlet and backwash
Transfer the operation of the multipaths such as process depending on experimental datas such as, stator leaving water temperature and interlayer temperatures, single experiment is time-consuming 4 to 5 little
When, the complexity of field experimentation work is higher.
Content of the invention
The present invention is in order to solve the above 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 arranging independent boiler and cold water storage cistern and coordinating water pump and heater
Amount, the generator thermal water flow simulation experiment of temperature conditionss, for the factors such as research flow, ambient temperature, the experiment temperature difference are to hot water
The impact of stream experiment has stronger operability.
To achieve these goals, the present invention is adopted 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 acquisition unit, wherein, the stator bar water inlet end connection hot-water return, the outlet of chilled water circuit, institute
State the outlet pipeline connection major loop water pump of stator bar, the major loop water pump connection hot-water return, the water inlet of chilled water circuit
Mouthful；
The water inlet end of the stator bar is provided with effusion meter, the water inlet of hot-water return, chilled water circuit and stator bar
End and water side are provided with temperature element, and the data acquisition unit obtains the test value of all temperature elements and effusion meter.
The hot-water return includes boiler, heater, hot-water return water pump and valve, and the heater is to hot water
Case is heated, and the boiler is connected with stator bar and major loop water pump by pipeline, the heater 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 is by pipeline and stator bar and major loop water pump
Connection, is provided with valve 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 technique of above-mentioned analog, comprise the following steps：
1) determine generator stator bar hot water stream empirical flow and the temperature difference, and flow and temperature are transmitted to data acquisition
Device simultaneously reads；
2) hot-water return water pump and valve is opened, the water of boiler is heated to design temperature；
3) hot-water return water pump and valve is closed, opens major loop water pump and valve, adjusted circulating water flow, use boiler
Hot water heating 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, with the circulating chilled water cooling stator line of cold water storage cistern
Rod, until stator bar leaving water temperature no longer changes, real-time storage temperature and data on flows；
5) major loop water pump and all valves are closed, and experiment terminates；
6) data analysiss are carried out, determines next group of experiment condition, repeat step 1) -5).
Beneficial effects of the present invention are：
By arranging independent boiler and cold water storage cistern and coordinating water pump and heater, the present invention can carry out various streams
Amount, the generator thermal water flow simulation experiment of temperature conditionss, for the factors such as research flow, ambient temperature, the experiment temperature difference are to hot water
The impact of stream experiment has stronger operability；
Completely simulated field experiment, and experimental implementation is simple and convenient, pilot process is few, experiment safety reliability；Data acquisition
Precision and real-time are high, and experimental data shows in real time, analyze 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. boiler, 3. cold water storage cistern, 4. hot-water return water pump, 5. major loop water pump, 6. heats
Device, 7. boiler inlet valve, 8. cold water storage cistern inlet valve, 9. boiler flowing water Valve, 10. cold water storage cistern flowing water Valve, 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 bar water outlet temperature elements, 17. effusion meters, 18. pipelines, 19. high-speed data acquisition instrument.
Specific embodiment：
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, effusion meter 17, the high-speed data acquisition instrument 19 of Real-time Collection 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 connected with water storage device by water pump, pipeline and valve；The water storage device include one cold
Water tank and a boiler, 2 water tank capacities are more than 30L；The pipeline connects all water loops, returns including major loop and hot water
Road；The water pump includes 2 water pumps, is respectively provided at major loop and hot-water return；The heater is quick heating electrical appliance, uses
In the water of boiler is heated to uniform temperature；The valve is located in water loop, for control water loop on off state and
Circulating direction；The measuring cell includes 1 effusion meter 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 collection 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 which.
The measuring cell accuracy and sensitivity meets experiment measurement requirement.
The high-speed data acquisition instrument can Real-time Collection temperature and data on flows, and possess store function.
The experimental technique of 4 iron loss experimental provision of electromotor of the present invention, comprises the following steps that：
1) 1 hot water stream experiment condition of generator stator bar, i.e. empirical flow, the experiment temperature difference etc. are determined, by flow and temperature
Degrees of data is transmitted to high speed data collecting instrument 19 and finally reads computer；
2) hot-water return water pump 4 and valve 12 is opened, the water of boiler 2 is heated to design temperature；
3) hot-water return water pump 4 and valve 12 is closed, opens major loop water pump 5 and valve 7, valve 9, valve 11, adjusted
Circulating water flow, with the hot water heating stator bar 1 of boiler 2, until 1 leaving water temperature of stator bar reaches setting value；
4) major loop water pump 5 is closed, closes valve 7, valve 9, Open valve 8, valve 10 are opened major loop water pump 5, used
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
Amount 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
9th, 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 analysiss are carried out, determines next group of experiment condition, repeat above step.
The operation principle of the present invention:
Larger complexity is had so that unfavorable based on the experiment of generator stator bar hot water stream during power plant carries out
In carrying out in depth experimentation, a set of analogue experiment installation of major design arranges 3 points of independent boiler 2 and cold water storage cistern
Experiment recirculated water is not provided to stator bar 1, and the temperature control of boiler 2 passes through heater 6, hot-water return water pump 4, hot water
Loop 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 and pass through 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
Operate in step, all experimentations are local operation, complete simulated field experiment, simple and convenient real-time high-efficiency, for depth
Enter to study the empirical factors such as flow, ambient temperature, the temperature difference to the research of experiment effect and stability and formation science practical
Experimental system and criterion tool are of great significance.
Although the above-mentioned accompanying drawing that combines is described to the specific embodiment of the present invention, not to present invention protection model
The restriction that encloses, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
The various modifications that makes by needing to pay creative work or deformation are still within protection scope of the present invention.
Claims (8)
1. a kind of generator stator bar hot water stream experimental simulation device, is characterized in that：Including stator bar, hot-water return, cold
Water loop, temperature element and data acquisition unit, wherein, stator bar water inlet end connection hot-water return, chilled water circuit go out
The mouth of a river, the outlet pipeline connection major loop water pump of the stator bar, the major loop water pump connection hot-water return, chilled water circuit
Water inlet；
The water inlet end of the stator bar is provided with effusion meter, the water inlet end of hot-water return, chilled water circuit and stator bar and
Water side is provided with temperature element, and the data acquisition unit obtains the test value of all temperature elements and effusion meter.
2. a kind of generator stator bar hot water stream experimental simulation device as claimed in claim 1, is characterized in that：The hot water
Loop includes boiler, heater, hot-water return water pump and valve, and the heater is heated to boiler, described
Boiler is connected with stator bar and major loop water pump by pipeline, is arranged on the connecting line of the heater and boiler
There are valve and hot-water return water pump.
3. a kind of generator stator bar hot water stream experimental simulation device as claimed in claim 1, is characterized in that：The cold water
Loop includes cold water storage cistern and valve, and the cold water storage cistern is connected with stator bar and major loop water pump by pipeline, on the pipeline
It is provided with valve.
4. a kind of generator stator bar hot water stream experimental simulation device as claimed in claim 1, is characterized in that：The thermometric
Element is thermocouple.
5. a kind of generator stator bar hot water stream experimental simulation device as claimed in claim 1, is characterized in that：The stator
Bar is the internal single generator stator bar without blocking.
6. a kind of generator stator bar hot water stream experimental simulation device as claimed in claim 2, is characterized in that：The hot water
Case volume is more than 30L.
7. a kind of generator stator bar hot water stream experimental simulation device as claimed in claim 3, is characterized in that：The cold water
Case volume is more than 30L.
8. the experimental technique based on the analog as any one of claim 1-7, is characterized in that：Including following step
Suddenly：
1) determine generator stator bar hot water stream empirical flow and the temperature difference, and flow and temperature are transmitted to data acquisition unit simultaneously
Read；
2) hot-water return water pump and valve is opened, the water of boiler is heated to design temperature；
3) hot-water return water pump and valve is closed, opens major loop water pump and valve, adjust circulating water flow, 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, and switch valve opens major loop water pump, cools down stator bar 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) major loop water pump and all valves are closed, and experiment terminates；
6) data analysiss are carried out, determines next group of experiment condition, repeat step 1) -5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Publication Number | Publication Date |
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| CN106500996A true CN106500996A (en) | 2017-03-15 |
| CN106500996B CN106500996B (en) | 2018-10-19 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107290165A (en) * | 2017-07-04 | 2017-10-24 | 国网浙江省电力公司电力科学研究院 | The evaluation method for characteristic that stator winding insulation in generator aqueduct is through-flow |
| CN107994972A (en) * | 2017-11-29 | 2018-05-04 | 哈尔滨物格电子技术有限公司 | A kind of WFT hot water streams pilot system |
| CN109520563A (en) * | 2018-10-31 | 2019-03-26 | 国网山东省电力公司电力科学研究院 | A kind of water inner cold motor stator bar strand chocking-up degree determines system and method |
| CN110033678A (en) * | 2019-04-22 | 2019-07-19 | 中广核核电运营有限公司 | Water-cooled 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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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107290165A (en) * | 2017-07-04 | 2017-10-24 | 国网浙江省电力公司电力科学研究院 | The evaluation method for characteristic that stator winding insulation in generator aqueduct is through-flow |
| 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 |
| CN107994972A (en) * | 2017-11-29 | 2018-05-04 | 哈尔滨物格电子技术有限公司 | A kind of WFT hot water streams pilot system |
| 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 |
| CN109520563A (en) * | 2018-10-31 | 2019-03-26 | 国网山东省电力公司电力科学研究院 | A kind of water inner cold motor stator bar strand chocking-up degree determines system and method |
| 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 |
| CN110033678A (en) * | 2019-04-22 | 2019-07-19 | 中广核核电运营有限公司 | Water-cooled generator stator model |
| 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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| CN106500996B (en) | 2018-10-19 |
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