CN107701353A - The adaptive thrust bearing external circulation cooling system of pump-storage generator - Google Patents
The adaptive thrust bearing external circulation cooling system of pump-storage generator Download PDFInfo
- Publication number
- CN107701353A CN107701353A CN201711202682.4A CN201711202682A CN107701353A CN 107701353 A CN107701353 A CN 107701353A CN 201711202682 A CN201711202682 A CN 201711202682A CN 107701353 A CN107701353 A CN 107701353A
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- oil
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- temperature
- motor pump
- thrust bearing
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- 238000001816 cooling Methods 0.000 title claims abstract description 49
- 230000003044 adaptive effect Effects 0.000 title claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 230000007257 malfunction Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 abstract description 6
- 238000010977 unit operation Methods 0.000 abstract description 5
- 230000000630 rising effect Effects 0.000 abstract description 4
- 238000005457 optimization Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/06—Bearing arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/008—Measuring or testing arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/06—Stations or aggregates of water-storage type, e.g. comprising a turbine and a pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C37/00—Cooling of bearings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Motor Or Generator Cooling System (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The present invention discloses a kind of adaptive thrust bearing external circulation cooling system of pump-storage generator, and system has automatic detection and adapts to the function that the bearing temperature as caused by accumulation of energy unit emergency case rises automatically within the specific limits.Including industrial computer, PLC device, data acquisition device, contactor, temperature sensor, pressure sensor, flow sensor, frequency converter, motor pump group, cooler.The data that the present invention is gathered by analyze data harvester, automatically select running status, when accumulation of energy unit operation runs into emergency case and causes the too fast rising of bearing temperature, or during thrust bearing cooling system itself generation partial fault, cooling system actively can switch over and adjust cooling flow, required cooling flow is provided for unit thrust bearing, ensures the operation of unit continuous-stable, new foundation is provided for the optimization design of hydraulic generator thrust bearing.
Description
Technical field：
The present invention relates to a kind of adaptive thrust bearing external circulation cooling system of pump-storage generator.
Background technology：
Hydraulic generator thrust bearing is carrying unit weight, the critical component of the hydraulic turbine and generator is connected, in unit
Running in can produce amount of heat because of friction, need a set of rational external circulation cooling system to be cooled down, to ensure
The operation of unit continuous-stable.The rotating speed of pump-storage generator is 4~6 times of conventional turbine-generator units rotating speed, to cooling system
The stability requirement of system is higher, and traditional hydraulic generator thrust bearing cooling system is to start motor pump by soft initiator
Group, circulation suction cools down to the deep fat of thrust bearing as caused by motor pump group, cold because the rotating speed of motor pump group is fixed
Oily flow is unadjustable, cooling capacity can not be increased when bearing temperature rises too fast, so most cooling systems are set
It is often bigger than normal to count flow, causes pipeline bubble to become more, increases vibrations and the noise of bearing cooling system, it is cold to greatly reduce bearing
But the service life of system, and traditional bearing cooling system does not have automatic decision function, in thrust bearing cooling system
When motor pump group breaks down, or when accumulation of energy unit operation runs into emergency case and causes bearing temperature too fast rising, system sheet
Body can not be switched over actively could find occur with cooling flow regulation, it is necessary to which unit bearing temperature reaches when alarm is shut down
Fortuitous event.
The content of the invention：
The purpose of the present invention is to disclose a kind of adaptive thrust bearing external circulation cooling system of pump-storage generator, by right
The collection and analysis of thrust bearing running temperature and cooling system self-operating parameter, can automatically select bearing cooling system
Running status, there is provided the cooling oil flow appropriate to thrust bearing, and accumulation of energy unit can be preserved under different operating conditions
Thrust bearing cooling system operational factor.
The technical scheme is that：A kind of adaptive thrust bearing external circulation cooling system of pump-storage generator, including
Industrial computer, PLC device, data acquisition device, contactor, temperature sensor, pressure sensor, flow sensor, frequency conversion
Device, motor pump group, cooler, in-line, outlet line；NI-CompactRIO-910X types data acquisition device (1) passes through
Pt100 temperature sensors (3) in the first SIMOTICS-GP type motor pump groups (2) measure the first SIMOTICS-GP types
The temperature of motor pump group (2), pass through the Pt100 temperature sensors in the 2nd SIMOTICS-GP type motor pump groups (4)
(5) temperature of the 2nd SIMOTICS-GP type motor pump groups (4) is measured, passes through the Pt100 TEMPs installed in flowline (6)
Device (7) measures oil outlet temperature, and oil pressure is measured by the SIENENS-QBE types pressure sensor (8) installed in flowline (6)
Power, oil stream amount is measured by the SIENENS-MAG5000 types flow sensor (9) installed in flowline (6), by installed in
Pt100 temperature sensors (11) measure Thrust-vectoring nozzle on thrust bearing shoe valve in oil groove (10), by installed in oil inlet pipe (12)
Pt100 temperature sensors (13) measure inlet oil temperature, pass through the SIENENS-QBE type pressure sensors installed in oil inlet pipe (12)
(14) measure oil pressure, by installed in the SIENENS-MAG5000 types flow sensor (15) of oil inlet pipe (12) measure into
The data of collection are passed through EPA real-time delivery by oil stream amount, NI-CompactRIO-910X types data acquisition device (1)
Analyzed to industrial computer (16) industrial computer (16) by program and calculate data, with the product meter of oil stream amount and temperature
The energy of disengaging oil groove is calculated, using constant watt of temperature as controlled quentity controlled variable, by adjusting the oil stream amount of disengaging oil groove in real time, a watt temperature is carried out
Closed-loop control, industrial computer (16) read the state parameter of SINAMICS-G120 types frequency converter (17) by EPA,
When SINAMICS-G120 types frequency converter (17) is when being in unfaulty conditions, industrial computer (16) passes through SIMATIC-
200PLC types device (18) control contactor device (19) is powered to frequency converter (17), and according to the flow calculated, industry calculates
Machine (16) controls LC1D245M7C types contactor arrangement (20) to connect first by SIMATIC-200PLC types PLC device (18)
SIMOTICS-GP type motor pump groups (2) are not enough to provide the flow calculated when the first pump group, are also turned on second
SIMOTICS-GP type motor pump groups (4), industrial computer (16) pass through Industrial Ethernet Control SINAMICS-G120 type frequency conversions
The output of device (17) carrys out the rotating speed of controlled motor pump group, so as to control the oil stream amount of cooling system, works as SINAMICS-G120
When being in malfunction of type frequency converter (17), industrial computer (16) are connect by SIMATIC-200PLC types device (18) control
LC1D245M7C type tentaculum devices (19) and LC1D245M7C types contactor arrangement (20) are directly motor pump group (2) and electric-motor pump
Group (4) is powered, and system forms variable circulation power by controlled motor pump group, by the profit in thrust bearing oil groove (10)
Cooled down in the cooler (21) of sliding deep fat suction cooling system, then cooling oil is returned into oil groove (10) inside.
The technique effect of the present invention：Traditional hydraulic generator thrust bearing cooling system be started by soft initiator it is electronic
Pump group, because the rotating speed of motor pump group is fixed, the flow of cooling oil is unadjustable, can not when bearing temperature rises too fast
Cooling capacity is increased, and (the design of Cooling System flow of most of Hydropower Units is all big when design of Cooling System flow is bigger than normal
Flow is actually needed in unit), pipeline bubble can be caused to become more, increase vibrations and the noise of bearing cooling system, substantially reduce
The service life of bearing cooling system, and traditional bearing cooling system do not have automatic decision function, in thrust bearing
When cooling system motor pump group breaks down, or accumulation of energy unit operation, which runs into emergency case, causes the too fast rising of bearing temperature
When, system can not actively switch over and adjust cooling capacity, it is necessary to which unit bearing temperature reaches when alarm is shut down just in itself
The fortuitous event occurred can be found, have impact on the stability and reliability of unit operation, and the rotating speed of pump-storage generator is normal
Advise turbine-generator units rotating speed 4~6 times are higher to the reliability requirement of cooling system.
The data that the present invention is gathered by analyze data harvester, automatically select running status, in accumulation of energy unit operation
It is cold when running into emergency case causes bearing temperature too fast rising, or when partial fault occurs for thrust bearing cooling system itself
But system actively can switch over and adjust cooling flow, and required cooling flow is provided for unit thrust bearing, ensure
The operation of unit continuous-stable, new foundation is provided for the optimization design of hydraulic generator thrust bearing.
The data acquisition device NI-CompactRIO-910X that the present invention uses has parallel data processing function, precision
Height, the high resolution of data, can be in the complicated electromagnetic interference environment in hydroelectric power plant the characteristics of strong antijamming capability up to 25ns
It is lower to carry out reliable data acquisition and processing (DAP).The Siemens SIMOTICS-GP type variable-frequency motors that the present invention uses are in 30~50HZ
Output torque is constant, has the speed-regulating function of 5~50HZ wide scopes.
The present invention can reach the purpose at utmost saving electricity using Frequency Converter Control electric motor starting, operation.
Brief description of the drawings：
Fig. 1 present invention installation and work connection figure
Embodiment：
As shown in figure 1, a kind of adaptive thrust bearing external circulation cooling system of pump-storage generator includes industrial computer,
PLC device, data acquisition device, contactor, temperature sensor, pressure sensor, flow sensor, frequency converter, motor pump group,
Cooler, in-line, outlet line.
As shown in figure 1, a kind of adaptive thrust bearing external circulation cooling system of pump-storage generator, including industry calculate
Machine, PLC device, data acquisition device, contactor, temperature sensor, pressure sensor, flow sensor, frequency converter, electric-motor pump
Group, cooler, in-line, outlet line；NI-CompactRIO-910X types data acquisition device 1 is by installed in first
Pt100 temperature sensors 3 in SIMOTICS-GP type motors pump group 2 measure the temperature of the first SIMOTICS-GP type motors pump group 2
Degree, the 2nd SIMOTICS- is measured by the Pt100 temperature sensors 5 in the 2nd SIMOTICS-GP type motors pump group 4
The temperature of GP type motors pump group 4, oil outlet temperature is measured by the Pt100 temperature sensors 7 installed in flowline 6, passes through installation
Oil pressure is measured in the SIENENS-QBE types pressure sensor 8 of flowline 6, passes through the SIENENS- installed in flowline 6
MAG5000 types flow sensor 9 measures oil stream amount, passes through Pt100 temperature sensors on the thrust bearing shoe valve in oil groove 10
11 measurement Thrust-vectoring nozzles, by installed in oil inlet pipe 12 Pt100 temperature sensors 13 measure inlet oil temperature, by installed in
The SIENENS-QBE types pressure sensor 14 of oil inlet pipe 12 measures oil pressure, passes through the SIENENS- installed in oil inlet pipe 12
MAG5000 types flow sensor 15 measures oil-feed flow, and NI-CompactRIO-910X types data acquisition device 1 is by the number of collection
According to by EPA real-time delivery to industrial computer 16, industrial computer 16 is analyzed by program and calculates data, uses
The product of oil stream amount and temperature calculates the energy of disengaging oil groove, using constant watt of temperature as controlled quentity controlled variable, by adjusting in real time into fuel-displaced
The oil stream amount of groove, closed-loop control is carried out to a watt temperature, and industrial computer 16 reads SINAMICS-G120 types by EPA and become
The state parameter of frequency device 17, when SINAMICS-G120 types frequency converter 17 is when being in unfaulty conditions, industrial computer 16 passes through
The control contactor device 19 of SIMATIC-200PLC types device 18 is powered to frequency converter 17, according to the flow calculated, industry meter
Calculation machine 16 controls LC1D245M7C types contactor arrangement 20 to connect first by SIMATIC-200PLC types PLC device 18
SIMOTICS-GP type motors pump group 2 is not enough to provide the flow calculated when the first pump group, is also turned on the 2nd SIMOTICS-
GP type motors pump group 4, industrial computer 16 are controlled by the output of Industrial Ethernet Control SINAMICS-G120 types frequency converter 17
The rotating speed of motor pump group processed, so as to control the oil stream amount of cooling system, when being in for SINAMICS-G120 types frequency converter 17
During malfunction, industrial computer 16 connects LC1D245M7C type tentaculums device 19 by the control of SIMATIC-200PLC types device 18
Directly it is powered with LC1D245M7C types contactor arrangement 20 for motor pump group 2 and motor pump group (4), system is by controlling electricity
Pump group forms variable circulation power, by the cooler 21 of the lubrication deep fat suction cooling system in thrust bearing oil groove 10
Cooled down, then cooling oil is returned inside oil groove 10.
Claims (1)
1. a kind of adaptive thrust bearing external circulation cooling system of pump-storage generator, it is characterized in that：Including industrial computer,
PLC device, data acquisition device, contactor, temperature sensor, pressure sensor, flow sensor, frequency converter, motor pump group,
Cooler, in-line, outlet line；NI-CompactRIO-910X types data acquisition device (1) is by installed in first
Pt100 temperature sensors (3) in SIMOTICS-GP type motor pump groups (2) measure the first SIMOTICS-GP type motor pump groups
(2) temperature, Pt100 temperature sensors (5) in the 2nd SIMOTICS-GP type motor pump groups (4) measurement the is passed through
The temperature of two SIMOTICS-GP type motor pump groups (4), measured by the Pt100 temperature sensors (7) installed in flowline (6)
Oil outlet temperature, oil pressure is measured by the SIENENS-QBE types pressure sensor (8) installed in flowline (6), passes through installation
Oil stream amount is measured in the SIENENS-MAG5000 types flow sensor (9) of flowline (6), by oil groove (10)
Thrust bearing shoe valve on Pt100 temperature sensors (11) measurement Thrust-vectoring nozzle, pass through installed in oil inlet pipe (12) Pt100 temperature pass
Sensor (13) measures inlet oil temperature, is measured by the SIENENS-QBE types pressure sensor (14) installed in oil inlet pipe (12)
Oil pressure, oil-feed flow, NI- are measured by the SIENENS-MAG5000 types flow sensor (15) installed in oil inlet pipe (12)
CompactRIO-910X types data acquisition device (1) calculates the data of collection by EPA real-time delivery to industry
Machine (16) industrial computer (16) is analyzed by program and calculates data, is calculated with the product of oil stream amount and temperature into fuel-displaced
The energy of groove, using constant watt of temperature as controlled quentity controlled variable, by adjusting the oil stream amount of disengaging oil groove in real time, closed-loop control is carried out to a watt temperature,
Industrial computer (16) reads the state parameter of SINAMICS-G120 types frequency converter (17) by EPA, when
When being in unfaulty conditions of SINAMICS-G120 types frequency converter (17), industrial computer (16) passes through SIMATIC-200PLC
Type device (18) control contactor device (19) is powered to frequency converter (17), according to the flow calculated, industrial computer (16)
LC1D245M7C types contactor arrangement (20) is controlled to connect first by SIMATIC-200PLC types PLC device (18)
SIMOTICS-GP type motor pump groups (2) are not enough to provide the flow calculated when the first pump group, are also turned on second
SIMOTICS-GP type motor pump groups (4), industrial computer (16) pass through Industrial Ethernet Control SINAMICS-G120 type frequency conversions
The output of device (17) carrys out the rotating speed of controlled motor pump group, so as to control the oil stream amount of cooling system, works as SINAMICS-G120
When being in malfunction of type frequency converter (17), industrial computer (16) are connect by SIMATIC-200PLC types device (18) control
LC1D245M7C type tentaculum devices (19) and LC1D245M7C types contactor arrangement (20) are directly motor pump group (2) and electric-motor pump
Group (4) is powered, and system forms variable circulation power by controlled motor pump group, by the profit in thrust bearing oil groove (10)
Cooled down in the cooler (21) of sliding deep fat suction cooling system, then cooling oil is returned into oil groove (10) inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711202682.4A CN107701353A (en) | 2017-11-27 | 2017-11-27 | The adaptive thrust bearing external circulation cooling system of pump-storage generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711202682.4A CN107701353A (en) | 2017-11-27 | 2017-11-27 | The adaptive thrust bearing external circulation cooling system of pump-storage generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107701353A true CN107701353A (en) | 2018-02-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711202682.4A Pending CN107701353A (en) | 2017-11-27 | 2017-11-27 | The adaptive thrust bearing external circulation cooling system of pump-storage generator |
Country Status (1)
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| CN (1) | CN107701353A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939847A (en) * | 2017-11-15 | 2018-04-20 | 哈尔滨电机厂有限责任公司 | The adaptive thrust bearing external circulation cooling system of pump-storage generator |
| CN109162856A (en) * | 2018-08-23 | 2019-01-08 | 南方电网调峰调频发电有限公司 | The method for monitoring state and system of turbine-generator units |
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| CN201575285U (en) * | 2009-12-10 | 2010-09-08 | 天津钢管集团股份有限公司 | Thin oil lubrication system for large reducer |
| US20100254827A1 (en) * | 2009-04-03 | 2010-10-07 | Energywin Technology Co., Limited | Method and Auto-control System on Improving Pumping System Performance |
| CN206397647U (en) * | 2017-01-03 | 2017-08-11 | 国家电网公司 | Oil pressure numerical value harvester and hydraulic oil jack-up pressure monitoring system |
| CN107939847A (en) * | 2017-11-15 | 2018-04-20 | 哈尔滨电机厂有限责任公司 | The adaptive thrust bearing external circulation cooling system of pump-storage generator |
-
2017
- 2017-11-27 CN CN201711202682.4A patent/CN107701353A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100254827A1 (en) * | 2009-04-03 | 2010-10-07 | Energywin Technology Co., Limited | Method and Auto-control System on Improving Pumping System Performance |
| CN201575285U (en) * | 2009-12-10 | 2010-09-08 | 天津钢管集团股份有限公司 | Thin oil lubrication system for large reducer |
| CN206397647U (en) * | 2017-01-03 | 2017-08-11 | 国家电网公司 | Oil pressure numerical value harvester and hydraulic oil jack-up pressure monitoring system |
| CN107939847A (en) * | 2017-11-15 | 2018-04-20 | 哈尔滨电机厂有限责任公司 | The adaptive thrust bearing external circulation cooling system of pump-storage generator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939847A (en) * | 2017-11-15 | 2018-04-20 | 哈尔滨电机厂有限责任公司 | The adaptive thrust bearing external circulation cooling system of pump-storage generator |
| CN107939847B (en) * | 2017-11-15 | 2019-06-21 | 哈尔滨电机厂有限责任公司 | The adaptive thrust bearing external circulation cooling system of pump-storage generator |
| CN109162856A (en) * | 2018-08-23 | 2019-01-08 | 南方电网调峰调频发电有限公司 | The method for monitoring state and system of turbine-generator units |
| CN109162856B (en) * | 2018-08-23 | 2020-09-25 | 南方电网调峰调频发电有限公司 | Method and system for monitoring state of hydroelectric generating set |
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Application publication date: 20180216 |