Circulation cooling device in water jacket of motor bearing

Abstract

The invention discloses a circulation cooling device in the water jacket of a motor bearing, which comprises two parts, namely, a water jacket part and a flange part, wherein the water jacket part is composed of an outer water-jacket ring, an inner water-jacket ring, a water baffle, a water inlet pipe and a water outlet pipe; the inner wall of the outer water-jacket ring or the outer wall of the inner water-jacket ring is provided with a circular groove, the outer water-jacket ring and the inner water-jacket ring are hermetically connected and surrounded to form the water jacket, the water baffle is transversely arranged in the water jacket, and the water inlet pipe and the water outlet pipe are respectively arranged at the two sides of the water baffle and communicated with the water jacket; the flange part comprises a large flange and a small flange, the straight gate end of the small flange is the connecting end of an external device, the straight gate end of the large flange is the connecting end of a motor bedplate, the other ends of the small flange and the large flange are connected together, and the coaxial inner holes of the small flange and the large flange are connected with the outer ring of the water jacket. The device of the invention can replace an end cover of a traditional motor, and by using the device, cooling fans for cooling bearing can not be used; and a water jacket at the periphery of a bearing chamber is added so as to carry out circulation cooling, so that the bearing temperature is always kept below 95 DEG C, thereby meeting the temperature requirements for the normal operation of the bearing, and guaranteeing the normal operations of motor.

Description

technical field [0001] The invention relates to the technical field of motor cooling, in particular to a device for performing water jacket circulation cooling on a bearing chamber at a motor end cover. Background technique [0002] The maximum power of ordinary H280 center-high 4-pole motor is 90kW, the bearing specification is 6317, and the motor cooling method is IC411, that is, the bearing temperature is cooled by the motor's own fan to force the air flow to take away the heat. For fanless motors (H280, 4 poles, 160kW) with high power, small size and high speed required in certain working conditions, bearings with a specification of 6317 are used, and it is difficult to reduce the bearing temperature of the motor to the allowable range with fan cooling . If the bearing temperature is too high, the grease will be liquefied and lost, and the bearing will be worn and deformed, resulting in uneven air gap of the motor, unilateral magnetic pull, inflexible rotation or stuck ...

AI Technical Summary

Problems solved by technology

If the bearing temperature is too high, the grease will be liquefied and lost, and the bearing will be worn and deformed, resulting in uneven air gap of the motor, unilateral magnetic pull, inflexible rotation or stuck phenomenon, which will cause the winding temperature to be too high, burn the insulation of the motor winding, and directly affect the motor. normal use

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