DOI: https://doi.org/10.20998/2078-774X.2017.11.08

Analysis of Heat State of Hydrogenerator Spider – Motor of High Power at Special Conditions of Operation

Oleksii Tretiak, Olexandr Shut, Nickita Tribushnoy

Анотація


In given article the study of the basic elements of Hydrogenerators of vertical design version namely the stator, the rotor including the bush, spokes, rotor rim, poles and shaft extension, guide bearing with lubrication and cooling, the thrust bearing with lubrication and cooling, braking and lifting device of the rotor with pipe lines systems, high pressure pump, braking shield, with top and bottom overlap with connection and assembly elements, ventilation and cooling system of Hydrogenerator-motor including air coolers. It is indicated to impossibility of the direct task solving for the design elements that are under action of circulation currents. Solving of the reverse tasks for large design elements of Hydrogenerator is proposed. The analysis of heating causes of the spider of Hydrogenerator during operation under various operating modes. Detailed calculation of the thermal state and the transfer of the central part of the spider at heating, as well as forces transmitted to the jack as a result of thermal expansion of the spider legs were determined. Calculation analysis has showed that the thermal expansion and thereby a transfer of the entire spider do not have critical nature generally. Submitted article gives opportunity to continue studying of the action of circulation currents to general condition of the design. Proposed methods let solve the reverse thermal task in three-dimensional model. As per got thermal release we succeed to specify the reaction in the spacing jacks supports connected with the thermal expansion of the construction. At that we succeed to determine heat release due to circulation currents in the spider top area. Calculations were made in the software programming complex SolidWorks Simulation.

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Посилання


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