An experimental simulation device and experimental method of hot water flow in generator stator bar

Abstract

The invention discloses a generator stator bar hot water flow experiment simulation device and an experimental method. The generator stator bar hot water flow experiment simulation device comprises a stator bar, a hot water loop, a cold water loop, temperature measuring elements and a data acquisition device, wherein a water inlet end of the stator bar is connected with water outlets of the hot water loop and the cold water loop, a water outlet pipeline of the stator bar is connected with a main loop water pump, and the main loop water pump is connected water inlets of the hot water loop and the cold water loop; the water inlet end of the stator bar is provided with a flowmeter, the water inlet ends and the water outlet ends of the hot water loop, the cold water loop and the stator bar are provided with the temperature measuring elements, and the data acquisition device acquires test values of all the temperature measuring elements and the flowmeter. The generator stator bar hot water flow experiment simulation device simulates the field test completely, operates all the test processes in situ, is simple, convenient, real-time and efficient, and is of very important significance to the intensive study of test factors such as flow, environment temperature and temperature difference on test effects and stability and the formation of scientific and practical test system and criteria.

Description

technical field [0001] The invention relates to an experimental simulation device and an experimental method for hot water flow of a stator bar of a generator. Background technique [0002] As one of the most important components of generators, the cooling of stator bars has always been the focus of attention and research. From the initial air cooling, water cooling to hydrogen cooling, the cooling method of the stator bar has undergone a very large change. Due to the safety, reliability, high efficiency and convenience of the water cooling method, among the 221 unified control units in our province, most of the stator bars of the generator sets adopt the cooling method of water internal cooling, especially in the mainstream 300MW, 600MW and 1000MW generator sets middle. [0003] The water internal cooling generator set has a complete set of water cooling system. During the operation and maintenance process, it is necessary to focus on monitoring the conductivity and PH va...

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Problems solved by technology

On the other hand, the field experiment involves multiple teams of steam turbine, electrical, and thermal engineering in the power plant, and it is necessary to complete the DCS remote control of the hydrogen-cooled motor and auxiliary steam heating, and the on-site closure of valves such as stator water intake and backwashing. Multi-process operations such as real-time monitoring of key data such as operation, flow, pressure, and temperature, retrieval and processing of experimental data such as stator outlet water temperature and interlayer temperature, etc., a single experiment takes 4 to 5 hours, and the complexity of on-site experimental work is relatively high

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