A Cooling Efficiency Measurement System for Bearing Cooler of Hydrogenerator
A hydroelectric generator, cooling efficiency technology, applied in hydroelectric power generation, engine components, machines/engines, etc., can solve problems such as the efficiency error of hydroelectric power generation bearing coolers, and achieve the effect of reducing measurement errors
Active Publication Date: 2021-01-26
HARBIN ELECTRIC MASCH CO LTD
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Problems solved by technology
In fact, when the hydro-generator set is in normal operation, the bearing cooler of the hydro-generator is in a changing flow field in the oil tank of the unit. The flow rate values are actually different, which has a greater impact on the heat transfer of the bearing cooler of the hydro-generator, so the efficiency of the bearing cooler of the hydro-generator measured by the above two methods is larger than the actual value. error
Method used
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Embodiment Construction
[0008] Such as figure 1 As shown, a cooling efficiency measurement system for a bearing cooler of a large hydro-generator: including a temperature sensor, a turbine flow sensor, a liquid pressure sensor, a sinking flow velocity measurement sensor, a heater, a frequency converter, a router, a serial server, data Acquisition device, servo motor, rectangular guide vane, industrial computer.
[0009] Such as figure 2 As shown, after starting the heater, four TD-B130 sinking flow rate measuring sensors of the same type are installed in the test oil tank 1, TD-B130 sinking flow rate measuring sensor A2, TD-B130 sinking flow rate measuring sensor Measuring sensor B3, TD-B130 type sinking flow rate measuring sensor C4, TD-B130 type sinking type flow rate measuring sensor D5 transmit the flow rate around the bearing cooler 6 of the hydro-generator set in the test oil tank 1 to Mport3104 through the RS232 serial port protocol In the serial port server A7, the Mport3104 serial port se...
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The purpose of the present invention is to disclose a cooling efficiency measurement system for the bearing cooler of a hydro-generator. The industrial computer in the present invention analyzes and calculates the surface lubricating oil of the bearing cooler according to the internal flow field of the oil tank of the hydro-generator set in actual operation. Flow direction and flow rate value, adjust the speed of the motor pump group through the frequency converter to adjust the flow rate entering the test oil tank, control the opening of the rectangular guide vanes in the test oil tank through the servo motor, and feed back to the turbine generator bearing through the flow rate measurement device in the test oil tank The flow rate of the lubricating oil around the cooler makes the flow direction and flow rate value of the lubricating oil around the hydraulic generator bearing cooler in the measurement system closer to the actual working state of the bearing cooler in the oil tank of the hydraulic generator set. The calculation of the cooling efficiency of the turbogenerator bearing cooler greatly reduces the measurement error of the cooling efficiency of the hydrogenerator bearing cooler.
Description
Technical field: [0001] The invention relates to a cooling efficiency measurement system for a bearing cooler of a hydroelectric generator. Background technique: [0002] With the development of my country's hydropower technology, the number of heavy-duty and high-speed hydro-generator units continues to increase, and the heat loss generated by the bearings of hydro-generator units is also increasing. Accurately measure the cooling efficiency of the hydro-generator bearing cooler , is one of the key indicators to design and improve the bearing cooler of hydro-generator. At present, there are two main ways to calculate the cooling efficiency of the bearing cooler of the hydro-generator: the manufacturer uses the thermal formula to conduct theoretical calculation according to the specific structure of the bearing cooler of the hydro-generator; On the premise of equality, some technicians measured the heat exchanged by the bearing cooler of the hydro-generator in the flowing li...
Claims
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IPC IPC(8): F03B11/00
CPCF03B11/008Y02E10/20
Inventor 高尚王森孙凯李文彬李伟刚
Owner HARBIN ELECTRIC MASCH CO LTD