Spray type motor stator evaporative cooling system

Abstract

The invention discloses a spray type motor stator evaporative cooling system, wherein a stator enclosed space consists of a stator enclosure (1), a spacing sleeve (3) and an end cover (2). A spraying system comprises liquid dispensers (801, 802, 803 and 804) which are distributed at the back part of a stator core (7), in the stator core (7), in a stator slot bottom subslot and the periphery of the end part of a stator winding (6) and nozzles (9) which are arranged on the liquid dispensers (801, 802, 803 and 804). A circulating pump (10) in an outer forced circulation system pumps an evaporative cooling medium from the bottom of the stator enclosed space, and the evaporative cooling medium is filtered by a filter (11), and is delivered to the nozzles (9) through the liquid dispensers (801, 802, 803 and 804). The atomized evaporative cooling medium is directly sprayed to all the heating elements of the stator. The evaporative cooling medium which is subjected to heat exchange flows into the stator enclosed space, the vaporized evaporative cooling medium flows into a condenser (12) at the top of the stator enclosure (1), and is changed into the liquid after being condensed by the condenser (12), and the liquid flows back into the stator enclosed space.

Description

technical field [0001] The invention relates to a motor stator evaporative cooling system Background technique [0002] With the increase of motor capacity, the calorific value increases, and the heat dissipation capacity of the motor directly affects the performance and life of the motor, which puts forward higher requirements for the cooling system of the motor. Evaporative cooling technology uses the principle of evaporative cooling medium to vaporize and absorb heat to cool the motor. Compared with traditional cooling methods, it has unique advantages. The evaporative cooling technology uses the latent heat of vaporization to absorb heat, with high cooling efficiency and uniform and comprehensive cooling effect. It uses high insulation, suitable boiling point, non-flammable, non-explosive, safe, stable, non-toxic and environmentally friendly evaporative cooling medium, which ensures the safe and stable operation of the motor. [0003] At present, there are two convent...

AI Technical Summary

Problems solved by technology

However, there are two main disadvantages of this cooling method: on the one hand, the use of the full immersion structure requires a relatively large amount of evaporative cooling medium, especially the space occupied by the end heating parts is small, but a lot of evaporative cooling medium needs to be wasted. to fill

At present, the price of the new environment-friendly evaporative cooling medium is relatively high, and the cost of the stator adopting the full immersion structure is limited by the high evaporative cooling medium, which seriously affects the economy of the motor; on the other hand, the internal sealing of the stator adopting the full immersion The space is filled with evaporative cooling medium, which puts forward higher requirements on the rigidity of the isolation sleeve and the reliability of the sealing structure, especially in order to maintain sufficient rigidity, the isolation sleeve needs to have a certain radial thickness. The increase increases the difficulty of the motor design and increases the cost of the motor

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