Water-lubricating bidirectional working thrust bearing device

Abstract

The invention relates to a water-lubricating bidirectional working thrust bearing device which is mainly structurally composed of a bearing seat, preloaded springs, a track ring plate, a lower balance block, pin rollers, an upper balance block, thrust bearing bushes, thrust pads, positioning pins and a thrust head. A thrust bearing is of an upper-lower symmetrical structure. The thrust pads are tightly pressed on the surface of the thrust head through the preloaded springs at the two ends by means of the thrust bearing. A motor bottom cover, the bearing seat and a sleeve are tightly pressed in a motor engine seat bearing chamber through bolts in the axial direction. The thrust head is adjusted to move up and down through a gap between the bearing seat and the track ring plate by means of the thrust bearing. When the thrust head moves up and down, the preloaded springs push the track ring plate, the pin rollers, the balance blocks, the bearing bushes and the thrust pads to move in a follow-up manner, and the unique bidirectional work thrust bearing device is formed.

Description

technical field [0001] The invention is a water-lubricated two-way working thrust bearing device. Background technique [0002] Water-lubricated thrust bearing is a self-lubricating bearing with water as the medium, that is, when the bearing is running, the rotating thrust head brings lubricant (water) between the thrust pad and the thrust head to generate a dynamic pressure lubricating water film, and the thrust pad It is generally made of carbon, graphite or composite materials with self-lubricating function. In order to reduce the friction between the thrust head and the thrust pad, the roughness of the thrust head is required to be very high, and high hardness is required to meet the anti-wear requirements. [0003] The third-generation large-scale advanced pressurized water reactor nuclear power shielded electric pump is one of the key core equipment in the primary circuit system of the reactor. Since the canned electric pump is directly hung upside down on the lower ...

AI Technical Summary

Problems solved by technology

Since the rotor weighs more than ten tons, and the thrust generated by the impeller of the canned pump has reached more than ten tons, the combined thrust can reach more than thirty tons. The use of traditional one-way working thrust bearings will inevitably produce thrust reversing shocks. This kind of impact is likely to damage the parts of the thrust bearing, causing bearing failure

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