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, which includes a shaft, a shaft sleeve, a bushing and a bearing seat. A bushing is arranged between the bushings, the bushing is installed on the outside of the bushing, the bushing is installed in the bearing seat, the lower end of the bearing seat is bent inward to block a baffle for the bushing, and the upper end of the bearing seat is fixed to cover the bushing. For the bushing gland, the two ends of the bushing protrude out of the bushing, the two ends of the shaft protrude out of the bushing, the outer wall of the bushing is evenly opened with several spiral grooves, and the lower end of the bushing is opened There is a lubricating medium inlet flow channel, and a lubricating medium outlet flow channel is opened on the upper end; beneficial effect: by opening several spiral grooves on the sleeve of the sliding bearing of the high temperature molten salt pump, the lubricating medium is filled with the flow channel and flows quickly, realizing good The lubricating and cooling effect effectively avoids the excessive wear of the sliding bearing and prolongs the service life of the sliding bearing.

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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