CN110735749B - System for measuring cooling efficiency of bearing cooler of hydraulic generator - Google Patents
System for measuring cooling efficiency of bearing cooler of hydraulic generator Download PDFInfo
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- CN110735749B CN110735749B CN201911069678.4A CN201911069678A CN110735749B CN 110735749 B CN110735749 B CN 110735749B CN 201911069678 A CN201911069678 A CN 201911069678A CN 110735749 B CN110735749 B CN 110735749B
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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
- F03B11/008—Measuring or testing arrangements
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- 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
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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Control Of Turbines (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention aims to disclose a system for measuring the cooling efficiency of a bearing cooler of a water-turbine generator, an industrial computer analyzes and calculates the flow direction and the flow velocity value of lubricating oil on the surface of the bearing cooler according to the internal flow field of an oil groove of the water-turbine generator set in actual operation, the rotating speed of the motor pump set is adjusted through the frequency converter so as to adjust the flow velocity entering the test oil tank, the opening degree of the rectangular guide vane in the test oil tank is controlled through the servo motor, the flow velocity of the lubricating oil around the bearing cooler of the water wheel generator is fed back by the flow velocity measuring device in the test oil tank, so that the flow direction and the flow velocity value of the lubricating oil around the bearing cooler of the water wheel generator in the measuring system are closer to the working state of the bearing cooler in the oil tank of the water wheel generator set, the cooling efficiency of the bearing cooler of the hydraulic generator is calculated under the state, so that the measurement error of the cooling efficiency of the bearing cooler of the hydraulic generator is greatly reduced.
Description
The technical field is as follows:
the invention relates to a cooling efficiency measuring system of a bearing cooler of a water turbine generator.
Background art:
with the development of hydropower technology in China, heavy-load and high-speed hydraulic generator sets are continuously increased, the heat loss generated by the bearings of the hydraulic generator sets is increased, the cooling efficiency of the hydraulic generator bearing cooler is accurately measured, and the method is one of key indexes for designing and improving the hydraulic generator bearing cooler. At present, the cooling efficiency of a bearing cooler of a hydraulic generator is calculated by two methods: theoretical calculation is carried out by manufacturers according to the specific structure of the bearing cooler of the hydro-generator by adopting a thermal formula; on the premise that the flow velocity of liquid flowing through all parts of the bearing cooler is equal, part of technicians measure the heat exchange of the bearing cooler of the water turbine generator in the flowing liquid and then perform simulation calculation. In fact, when the hydro-generator set normally operates, the bearing cooler of the hydro-generator is in a changed flow field in the oil tank of the set, and the flow direction and the flow velocity value of the lubricating oil flowing through the heat dissipation surface of the bearing cooler of the hydro-generator in the oil tank are actually different, which has a great influence on the heat conversion of the bearing cooler of the hydro-generator, so that the efficiency of the bearing cooler of the hydro-generator measured by the two methods has a great error compared with the actual value.
The invention content is as follows:
the invention aims to disclose a system for measuring the cooling efficiency of a bearing cooler of a water-turbine generator set, which analyzes and calculates the flow direction and the flow velocity value of lubricating oil on the surface of the bearing cooler of the water-turbine generator set according to the internal flow field of the oil groove of the water-turbine generator set in actual operation, adjusts the rotating speed of a motor pump set through a frequency converter to adjust the flow velocity of the oil entering and exiting a test oil groove, controls the opening of a rectangular guide vane of the test oil groove through a servo motor, and feeds back the flow velocity of the lubricating oil around the bearing cooler of the water-turbine generator set through a test oil groove flow velocity measuring device so that the flow direction and the flow velocity value of the lubricating oil around the bearing cooler of the water-turbine generator set in the measuring system are closer to the actual working state of the bearing cooler of the water-turbine generator set in the oil groove, under the condition, the, the efficiency of the shaft water turbine generator bearing cooler is calculated, and the measurement error of the cooling efficiency of the water turbine generator bearing cooler is greatly reduced by the measurement mode. The technical scheme of the invention is as follows: including temperature sensor, turbine formula flow sensor, liquid pressure sensor, formula velocity of flow measurement sensor that sinks, heater, converter, router, serial servers, data acquisition device, servo motor, rectangle stator, industrial computer: after a heater is started, four TD-B130 type sinking flow velocity measuring sensors, a TD-B130 type sinking flow velocity measuring sensor A, a TD-B130 type sinking flow velocity measuring sensor B, a TD-B130 type sinking flow velocity measuring sensor C and a TD-B130 type sinking flow velocity measuring sensor D which are arranged in a test oil tank transmit the flow velocity around a bearing cooler of a water-turbine generator set in the test oil tank to an Mport3104 type serial server A through an RS232 serial port protocol, the Mport3104 type serial server A transmits data to an industrial computer through an Ethernet, and the industrial computer compares the flow velocity of the lubricating oil around the bearing cooler of the water-turbine generator set in actual operation with the flow velocity of the lubricating oil around the bearing cooler of the water-turbine generator set calculated through simulation analysis in the oil tank of the water-turbine generator set in actual operation, The flow velocity value is connected to a SINAMICS G120 type frequency converter through a TP-LINK WVR450G type router to adjust the rotating speed of a motor pump set so as to adjust the flow velocity of oil entering a test oil tank, and the rotation angles of an Ism-380-620 type servo motor A and an Ism-380-620 type servo motor B are controlled through an Mport3104 type serial server B so as to control the opening degrees of a rectangular guide vane A and a rectangular guide vane B, so that the flow direction and the flow velocity value of lubricating oil around a bearing cooler of a water turbine generator set in a measuring system are closer to those of a bearing cooler of the water turbine generator set in a real oil tank; under the condition, a PT100 type platinum resistance temperature sensor A installed on an oil inlet pipeline transmits temperature data to an Agilent 34970 type data acquisition device, an LWGY type turbine flow sensor A installed on the oil inlet pipeline transmits flow data to an Agilent 34970 type data acquisition device, a Siemens IMF liquid pressure sensor A installed on the oil inlet pipeline transmits pressure data to an Agilent 34970 type data acquisition device, a PT100 type platinum resistance temperature sensor B installed on an oil outlet pipeline transmits temperature data to an Agilent 34970 type data acquisition device, an LWGY type turbine flow sensor B installed on the oil outlet pipeline transmits flow data to an Agilent 34970 type data acquisition device, a Siemens IMF liquid pressure sensor B installed on the oil outlet pipeline transmits pressure data to an Agilent 34970 type data acquisition device, a PT100 type platinum resistance temperature sensor C installed on an water inlet pipe of a bearing cooler transmits temperature data to an Agilent 34970 type data acquisition device On the type data acquisition device, an LWGY type turbine flow sensor C arranged on a water inlet pipe of a bearing cooler transmits water flow data to an Agilent 34970 type data acquisition device, a Siemens IMF liquid pressure sensor C arranged on the water inlet pipe of the bearing cooler transmits pressure data to an Agilent 34970 type data acquisition device, an Agilent 34970 type data acquisition device transmits temperature data and flow data to an industrial computer through a TP-LINK WVR450G router, and the industrial computer directly calculates heat carried away by the bearing cooler according to the basic principle that the heat required by the temperature reduction of lubricating oil with the same volume is the same by measuring the changes of the temperature and the flow of the lubricating oil, so that the cooling efficiency value of the bearing cooler of a corresponding hydro-generator set is calculated.
The invention analyzes and calculates the flow direction and flow velocity value of the surface lubricating oil of the bearing cooler of the water-turbine generator set according to the internal flow field of the oil groove of the water-turbine generator set in actual operation, adjusts the rotating speed of the motor pump set through a frequency converter to adjust the oil flow velocity entering and exiting the test oil groove, controls the opening degree of a guide vane of the test oil groove through a servo motor, and feeds back the rotating speed around the bearing cooler of the water-turbine generator set in the test oil groove through a flow velocity measuring device in the test oil groove to ensure that the flow direction and flow velocity value around the bearing cooler of the water-turbine generator set in a measuring system are closer to the cooler in the oil groove of the real water-turbine generator set, under the condition, the heat carried away by the bearing cooler of the water-turbine generator set is directly calculated according to the basic principle that the required heat, thereby calculate the cooling efficiency value of corresponding hydroelectric set bearing cooler, this kind of measuring method greatly reduced hydroelectric set bearing cooler efficiency's measuring error.
The cooling efficiency of the traditional water turbine generator bearing cooler is calculated by two methods: theoretical calculation is carried out by manufacturers according to the specific structure of the bearing cooler of the hydro-generator by adopting a thermal formula; on the premise that the flow velocity of liquid flowing through each part of the bearing cooler of the water turbine generator is equal, part of technicians measure the heat exchange of the bearing cooler of the water turbine generator in the flowing liquid and then perform simulation calculation. In fact, when the hydro-generator set normally operates, the bearing cooler of the hydro-generator is in a changed flow field in the oil tank of the set, and the flow direction and the flow velocity value of the lubricating oil flowing through the heat dissipation surface of the bearing cooler of the hydro-generator in the oil tank are actually different, which has a great influence on the heat conversion of the bearing cooler of the hydro-generator, so that the efficiency of the bearing cooler of the hydro-generator measured by the two methods has a great error compared with the actual value. According to the invention, the cooling efficiency of the bearing cooler of the water turbine generator is measured by adopting a mode of dynamically adjusting the flow velocity of the lubricating oil in the test oil groove according to the data of the simulation calculation of the flow field in the oil groove in the actual unit, so that the method is more real and accurate, and the error is greatly reduced.
Description of the drawings:
FIG. 1 is a schematic block diagram of the present invention
FIG. 2 is a view of the installation and working connection of the present invention
The specific implementation mode is as follows:
as shown in fig. 1, a cooling efficiency measuring system of a large-sized hydro-generator bearing cooler: the system comprises a temperature sensor, a turbine flow sensor, a liquid pressure sensor, a sinking flow velocity measuring sensor, a heater, a frequency converter, a router, a serial server, a data acquisition device, a servo motor, a rectangular guide vane and an industrial computer.
As shown in FIG. 2, after the heater is started, four TD-B130 type sinking flow velocity measuring sensors of the same model are installed in a test oil tank 1, a TD-B130 type sinking flow velocity measuring sensor A2, a TD-B130 type sinking flow velocity measuring sensor B3, a TD-B130 type sinking flow velocity measuring sensor C4 and a TD-B130 type sinking flow velocity measuring sensor D5 transmit the flow velocity around a hydro-generator set bearing cooler 6 in the test oil tank 1 to an Mport3104 type serial port server A7 through an RS232 serial port protocol, the Mport3104 type serial port server A7 transmits data to an industrial computer 8 through an Ethernet, the industrial computer 8 is connected to a SINAMICS G120 type frequency converter 10 through a TP-K WVR450 VR450G type LIN 9 to adjust the rotation speed of a pump set 11 of a motor pump set 10 to adjust the flow velocity of oil entering the test oil tank, and controls the rotation angle of an Ism-380 type servo motor A13 and an Ism-B86620 type servo motor 14 through the Mport3104 type serial port server B12 The opening degree of the rectangular guide vane A15 and the rectangular guide vane B16 is controlled, a PT100 type platinum resistance temperature sensor A18 arranged on an oil inlet pipeline 17 transmits temperature data to an Agilent 34970 type data acquisition device 19, an LWGY type turbine flow sensor A20 arranged on the oil inlet pipeline 17 transmits flow data to an Agilent 34970 type data acquisition device 19, a Siemens IMF liquid pressure sensor A21 arranged on the oil inlet pipeline 17 transmits pressure data to the Agilent 34970 type data acquisition device 19, a PT100 type platinum resistance temperature sensor B23 arranged on an oil outlet pipeline 22 transmits temperature data to the Agilent 34970 type data acquisition device 19, an LWGY type turbine flow sensor B24 arranged on the oil outlet pipeline 22 transmits flow data to the Agilent 34970 type data acquisition device 19, a Siemens IMF liquid pressure sensor B25 arranged on the oil outlet pipeline 22 transmits pressure data to the Agilent 34970 type data acquisition device 19, the PT100 type platinum resistance temperature sensor C27 arranged on the water inlet pipe 26 of the bearing cooler 6 transmits temperature data to an Agilent 34970 type data acquisition device 19, the LWGY type turbine flow sensor C28 arranged on the water inlet pipe 26 of the bearing cooler 6 transmits water flow data to the Agilent 34970 type data acquisition device 19, the Siemens IMF liquid pressure sensor C29 arranged on the water inlet pipe 26 of the bearing cooler 6 transmits pressure data to the Agilent 34970 type data acquisition device 19, the Agilent 34970 type data acquisition device 19 transmits the temperature data and the flow data to the industrial computer 8 through a TP-LINK WVR450G router 9, and the industrial computer 8 calculates the corresponding cooling efficiency value of the bearing cooler of the water turbine generator set according to the temperature data and the flow data.
Claims (1)
1. The utility model provides a hydraulic generator bearing cooler cooling efficiency measurement system which characterized by: four TD-B130 type sinking flow velocity measuring sensors of the same type are arranged in a test oil tank (1), a TD-B130 type sinking flow velocity measuring sensor A (2), a TD-B130 type sinking flow velocity measuring sensor B (3), a TD-B130 type sinking flow velocity measuring sensor C (4), a TD-B130 type sinking flow velocity measuring sensor D (5) transmits the flow velocity around a hydro-generator set bearing cooler (6) in the test oil tank (1) to an Mport3104 type serial port server A (7) through an RS232 serial port protocol, the Mport3104 type serial port server A (7) transmits data to an industrial computer (8) through an Ethernet, the industrial computer (8) is connected to a SINAMICS G120 type frequency converter (10) through a TP-LINK WVR450G type router (9) to adjust the rotating speed of a motor (11) so as to adjust the oil flow velocity entering the test oil tank, the opening degrees of a rectangular guide vane A (15) and a rectangular guide vane B (16) are controlled by controlling the rotation angles of an Ism-380-620 servo motor A (13) and an Ism-380-620 servo motor B (14) through an Mport3104 serial server B (12), a PT100 type platinum resistance temperature sensor A (18) arranged on an oil inlet pipeline (17) transmits temperature data to an Agilent 34970 type data acquisition device (19), an LWGY type turbine flow sensor A (20) arranged on the oil inlet pipeline (17) transmits flow data to an Agilent 34970 type data acquisition device (19), a Siemens IMF liquid pressure sensor A (21) arranged on the oil inlet pipeline (17) transmits pressure data to an Agilent 34970 type data acquisition device (19), a PT100 type platinum resistance temperature sensor B (23) arranged on an oil outlet pipeline (22) transmits temperature data to an Agilent 34970 type data acquisition device (19), the LWGY type turbine flow sensor B (24) arranged on the oil outlet pipeline (22) transmits flow data to an Agilent 34970 type data acquisition device (19), the Siemens IMF liquid pressure sensor B (25) arranged on the oil outlet pipeline (22) transmits pressure data to the Agilent 34970 type data acquisition device (19), the PT100 type platinum resistance temperature sensor C (27) arranged on the water inlet pipe (26) of the bearing cooler (6) transmits temperature data to the Agilent 34970 type data acquisition device (19), the LWGY type turbine flow sensor C (28) arranged on the water inlet pipe (26) of the bearing cooler (6) transmits water flow data to the Agilent 34970 type data acquisition device (19), the Siemens IMF liquid pressure sensor C (29) arranged on the water inlet pipe (26) of the bearing cooler (6) transmits pressure data to the Agilent 34970 type data acquisition device (19), an Agilent 34970 type data acquisition device (19) transmits the temperature data and the flow data to an industrial computer (8) through a TP-LINK WVR450G router (9), and the industrial computer (8) calculates the corresponding cooling efficiency value of the bearing cooler of the hydroelectric generating set according to the temperature data and the flow data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911069678.4A CN110735749B (en) | 2019-11-05 | 2019-11-05 | System for measuring cooling efficiency of bearing cooler of hydraulic generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911069678.4A CN110735749B (en) | 2019-11-05 | 2019-11-05 | System for measuring cooling efficiency of bearing cooler of hydraulic generator |
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| Publication Number | Publication Date |
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| CN110735749A CN110735749A (en) | 2020-01-31 |
| CN110735749B true CN110735749B (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911069678.4A Active CN110735749B (en) | 2019-11-05 | 2019-11-05 | System for measuring cooling efficiency of bearing cooler of hydraulic generator |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009276257A (en) * | 2008-05-16 | 2009-11-26 | Jfe Steel Corp | Method of determining abnormality of wheel bearing section of wheel of truck |
| CN106092632A (en) * | 2016-08-01 | 2016-11-09 | 无锡隆盛科技股份有限公司 | Cooler for recycled exhaust gas cooling effectiveness test device |
| CN107101814A (en) * | 2017-05-03 | 2017-08-29 | 黑龙江沧龙发电设备股份有限公司 | A kind of experiment porch for oil cooler efficiency test |
| CN107605945A (en) * | 2017-11-03 | 2018-01-19 | 湖南崇德工业科技有限公司 | Oil-water cooler and vertical type sliding bearing |
| CN208223829U (en) * | 2018-06-22 | 2018-12-11 | 南方英特空调有限公司 | Ancillary equipment is used in a kind of test of car water oil cooler |
| CN110017948A (en) * | 2019-04-30 | 2019-07-16 | 无锡双翼汽车环保科技有限公司 | Testboard is used in cooler detection |
-
2019
- 2019-11-05 CN CN201911069678.4A patent/CN110735749B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009276257A (en) * | 2008-05-16 | 2009-11-26 | Jfe Steel Corp | Method of determining abnormality of wheel bearing section of wheel of truck |
| CN106092632A (en) * | 2016-08-01 | 2016-11-09 | 无锡隆盛科技股份有限公司 | Cooler for recycled exhaust gas cooling effectiveness test device |
| CN107101814A (en) * | 2017-05-03 | 2017-08-29 | 黑龙江沧龙发电设备股份有限公司 | A kind of experiment porch for oil cooler efficiency test |
| CN107605945A (en) * | 2017-11-03 | 2018-01-19 | 湖南崇德工业科技有限公司 | Oil-water cooler and vertical type sliding bearing |
| CN208223829U (en) * | 2018-06-22 | 2018-12-11 | 南方英特空调有限公司 | Ancillary equipment is used in a kind of test of car water oil cooler |
| CN110017948A (en) * | 2019-04-30 | 2019-07-16 | 无锡双翼汽车环保科技有限公司 | Testboard is used in cooler detection |
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| CN110735749A (en) | 2020-01-31 |
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