Cooling efficiency measuring system for bearing cooler of hydro-generator
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: 2020-01-31
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] like 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] like figure 2 As shown, after starting the heater, the TD-B130 sinking flow velocity measurement sensor 2, the TD-B130 sinking flow velocity measurement sensor 3, and the TD-B130 sinking flow velocity measurement sensor 4 installed in the test oil tank 1 , the TD-B130 type sinking flow velocity measurement sensor 5 transmits the flow velocity around the bearing cooler 6 of the hydro-generator set in the test oil tank 1 to the Mport3104 type serial port server 7 through the RS232 serial port protocol, and the Mport3104 type serial port server 7 transmits the flow rate through the Ethern...
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The invention aims to provide a cooling efficiency measuring system for a bearing cooler of a hydro-generator. An industrial computer in the system adjusts the rotating speed of a motor pump set through a frequency converter to adjust the flow rate entering into a test oil groove according to a flow direction and a flow rate value of lubricating oil on the surface of the bearing cooler analyzed and calculated by a flow field in an oil groove of a hydro-generator set in actual operation, controls the opening of a rectangular guide vane in the test oil groove through a servo motor, and feeds back the flow rate of the lubricating oil around the bearing cooler of the hydro-generator through a flow rate measuring device in the test oil groove, so that the flow direction and the flow rate valueof the lubricating oil around the bearing cooler of the hydro-generator in the measuring system are closer to achieve the working state of the bearing cooler in the oil groove of the hydro-generator set. In the state, the cooling efficiency of the bearing cooler of the hydro-generator is calculated, so that the measuring error of the cooling efficiency of the bearing cooler of the hydro-generatoris reduced greatly.
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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Login to View More 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