The sealing tooth structure to prevent the generator bearing from throwing oil and oil mist from overflowing

Abstract

The invention discloses a sealing tooth structure preventing shed oil of an electricity generator bearing and oil mist overflowing. A sealing cover is arranged between a groove cover and a rotation shaft to seal the space between an oil groove and the rotation shaft; sealing teeth are arranged between the sealing cover and the rotation shaft; a gap is reserved between the sealing teeth and the rotation shaft, and an inclined groove is formed in the inner side faces of the sealing teeth; a suction opening is formed in the oil groove or the sealing cover and connected with an oil mist suction and drain device through a pipeline, and the suction opening is used for sucking gas in the oil groove in the sealing cover. The sealing tooth structure can seal oil mist generated in operation of a generator set, and the oil mist is limited in the oil groove; when the rotation shaft rotates at high speed, air enters the oil groove from the upper face of the sealing teeth via the inclined groove and the gap between the sealing teeth and the rotation shaft, an air-tight seal effect is achieved, and the oil mist in the oil groove can not overflow; the gap is reserved between the sealing teeth and the rotation shaft, friction and heat can not occur between the rotation shaft and the sealing teeth, the sealing teeth can not be aged, and the service life of the sealing teeth is prolonged; abrasion of the rotation shaft is avoided.

Description

technical field [0001] The invention relates to a component of power generation equipment, in particular to a high-speed generator with lubricating oil or cooling oil, and a sealing tooth structure for preventing the generator bearing from throwing oil and oil mist from overflowing. technical background [0002] On equipment that can rotate relatively, such as between the rotor and stator of power generation equipment, lubricating oil or cooling oil is needed to lubricate and cool related parts, such as the rotor shaft, etc. Take away the heat, reduce its temperature, prevent the parts from being burned or stuck, etc., so as to prolong its service life. [0003] The bearings of power generation equipment are soaked in lubricating oil. Since the bearings are high-speed rotating parts, the lubricating oil hits at high speed in the oil tank, which is prone to oil throwing and oil mist overflow, which not only pollutes the environment but also may cause insulation accidents. ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem of oil mist in hydroelectric generator sets, the applicant applied for an invention patent titled "Device for Preventing Oil Mist Overflow of Generator Bearings" with application number 2013106206840 on November 29, 2013, which can prevent negative pressure , prevent external oil throwing and timely treatment of oil mist, etc., but due to the close contact between the elastic seal and the rotating shaft, the contact parts between the elastic seal and the rotating shaft are worn, and heat is generated, so that the polymer material The elastic seals are more prone to aging and reduce the service life

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