Device for checking an electrical machine cooling system

摘要

The invention relates to devices for checking the conditions of the coolant at the output of the coolant feed unit of an electrical machine with cryogenic cooling. The device for checking the condition of the coolant comprises a hollow rotor, in which cryogenic temperature is maintained. Located inside the hollow rotor at one end and coaxially with the rotor is a coolant feed unit having a stationary part made in the form of two coaxial tubes disposed with a gap with respect to each other and a movable part. One end of the coolant feed unit communicates with a coolant supply tank while the other end communicates with a coolant collecting chamber, which, in turn, communicates with a unit for transferring the coolant into a liquid coolant receiver tank disposed at the other end of the hollow rotor and made, identically to the unit, in the form of two coaxial tubes. Provided at the ends of the hollow rotor are at least two chambers for transferring the gaseous coolant, one of which communicates with the movable part of the unit and the other one communicates with the coolant collecting chamber. The coolant supply and receiver tanks have a device for measuring the quantity of liquid coolant. The invention is used for determining the quantitative proportion of the liquid and gaseous phases of the coolant of an electrical machine with cryogenic cooling.