Self-lubricating bearing device for high-temperature molten salt pump

Abstract

The invention discloses a self-lubricating bearing device for a high-temperature molten salt pump. The self-lubricating bearing device for the high-temperature molten salt pump comprises a shaft, a shaft sleeve, a bushing and a bearing block, wherein the shaft sleeve is fixedly arranged on the outside of the shaft in a sleeving manner; the shaft sleeve is mounted in the bearing block; the bushingis arranged between the bearing block and the shaft sleeve, is mounted on the outside of the shaft sleeve and is mounted in the bearing block; the lower end of the bearing block is inwards bent to form a baffle which stops the bushing; a bushing gland for covering the bushing is fixed at the upper end of the bearing block; two ends of the shaft sleeve extend out of the bushing; two ends of the shaft extend out of the shaft sleeve; a plurality of spiral channels are uniformly formed in the outer wall of the shaft sleeve; a lubricating medium inlet flow channel is formed in the lower end of theshaft sleeve; and a lubricating medium outlet flow channel is formed in the upper end of the shaft sleeve. The self-lubricating bearing device for the high-temperature molten salt pump has the beneficial effects that the spiral channels are formed in the sliding bearing shaft sleeve of the high-temperature molten salt pump, thus, the flow channels are filled with a lubricating medium which flows rapidly, the lubricating and cooling effect is good, excessive abrasion of a sliding bearing is avoided effectively, and the service life of the sliding bearing is prolonged.

Description

technical field [0001] The invention relates to a component for a high-temperature molten salt pump, in particular to a self-lubricating bearing device for a high-temperature molten salt pump. Background technique [0002] The high-temperature molten salt pump is a vertical submerged pump structure. It transports high-temperature molten salt with a medium temperature exceeding 300°C. The sliding bearing is immersed in the molten salt as a whole. It is very important for the bearing to realize its self-lubrication when operating at such a high temperature. of. At present, the traditional sliding bearing is composed of a shaft sleeve and a bushing. The gap between them is very small, the operating conditions are complicated, and the impurity particles in the molten salt will cause scratches on the sliding surface of the sliding bearing and increase friction. It causes the gap to increase, causes the vibration of the pump, and affects the service life of the pump; at the same ...

AI Technical Summary

Problems solved by technology

At present, the traditional sliding bearing is composed of a shaft sleeve and a bushing. The gap between them is very small, the operating conditions are complicated, and the impurity particles in the molten salt will cause scratches on the sliding surface of the sliding bearing and increase friction. It causes the gap to increase, causes the vibration of the pump, and affects the service life of the pump; at the same time, it causes the local temperature of the shaft to be too high, resulting in deformation, and in severe cases, it causes locking.

The reason is that the lubricating medium from the gap between the bushing and the bushing is insufficient, and the entire sliding surface cannot be fully lubricated, resulting in metal contact at this place, and bearing wear occurs

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