Device for recycling exhaust air and cooling fluid of condensator for evaporative cooling electric motor

Abstract

The invented device is installed between the main condenser and the evaporative cooling chamber for dipping stators. A pressure controller is installed at the top part of the main condenser and connected to its condensation space. The pressure controller is connected to the solenoid valve, the air pump, auxiliary condenser and the tank for separating air and liquid. The separated air through a one-way valve entering into the air filter is discharged after filtering. The liquid cooling medium (coolant) condensed in the said tank through the lower tube with installed another pressure controllerand solenoid valve runs back to the evaporative cooling chamber. When the pressure in the condensation space is higher than the set value, the air in the main condenser is discharged out. The invention makes the condenser operate at presetting pressure and recycles coolant so as to meet the requests of safe and economical running.

Description

technical field [0001] The invention belongs to a motor cooling device, relates to the improvement and completion of an evaporative cooling motor, and provides a condenser exhaust and cooling liquid recovery device. Background technique [0002] Large-scale generators, including turbo generators and hydro generators, adopt evaporative cooling technology, which has the advantages of better cooling effect, safe and reliable operation, etc. than commonly used air-cooled, water-cooled, and hydrogen-cooled units. Here, the generator whose stator heating element adopts evaporative cooling is called an evaporative cooling motor. Its evaporative cooling device is a closed cooling medium circulation system. In the stator evaporative cooling chamber of the motor, the liquid cooling medium (also called cooling liquid) After the stator of the motor heats up, the boiling evaporation phase turns into a vapor, enters the condenser to exchange heat with the secondary cooling water, condense...

AI Technical Summary

Problems solved by technology

However, at the same time as the air is discharged, part of the cooling medium steam is also discharged, which is not allowed in some applications, such as the space for installing evaporative cooling motors on ships is relatively narrow, and the location is limited

[0003] Chinese invention patent applications 01131399.4 and 01131397.8 provide two types of evaporative cooling devices for large motors. In their evaporative cooling circuits, there are no condenser exhaust and cooling liquid recovery devices

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