Heat pipe auxiliary type heat dissipation system for cooling bearing on high-temperature molten salt pump

Abstract

The invention relates to a high-temperature molten salt pump, in particular to a heat pipe auxiliary type heat dissipation system for cooling a bearing on the high-temperature molten salt pump. The heat pipe auxiliary type heat dissipation system comprises a bearing box, a heat exchange system and an air cooling system, wherein the heat exchange system is formed by welding a main radiating fin, aU-shaped heat pipe and an umbrella-shaped radiating fin; the air cooling system comprises an upper wind wheel, a lower wind wheel, a cover cylinder, a spiral flow deflector and a continuous spiral groove. A bearing is installed in the bearing box, main radiating fins are arranged on the outer wall of the bearing box, the main radiating fins are vertically provided with holes to be installed into apair of U-shaped heat pipes, and the umbrella-shaped radiating fins are evenly arranged on the periphery of the condensation end; the upper wind wheel is arranged at the upper end of the pump shaft,and the lower wind wheel is arranged at the lower end of the pump shaft; the spiral flow deflectors are arranged on the inner wall of the cover cylinder to form the continuous spiral groove; air holes are formed in the motor base, and airflow can be discharged from the air holes and is further discharged out of the system through the lower wind wheel. The heat pipe is used for assisting the finsto dissipate heat, the spiral flow deflector is additionally arranged to be matched with the cover cylinder to form a controllable air duct, heat in the system is discharged, and therefore the servicelife of the bearing is guaranteed.

Description

technical field [0001] The invention relates to a high-temperature molten salt pump, in particular to a heat pipe-assisted cooling system for bearings on the high-temperature molten salt pump. Background technique [0002] The high-temperature molten salt pump is a pump used to transport high-temperature metal salts. It is mainly used for the transport of high-temperature nitrate, nitrite, etc., and is also widely used in alumina, aluminum hydroxide and organic chemical processes. Since the temperature of the medium transported by the high-temperature molten salt pump is usually 400°C or above, the working life of the bearing will be greatly reduced at this temperature, which will further reduce the overall life of the high-temperature molten salt pump. Environmental longevity has become one of the major challenges. Since the optimization of the bearing cooling system has a significant gain in increasing the service life of the bearing, and the comprehensive engineering app...

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Problems solved by technology

[0003] Both fins and heat pipes are devices with good heat transfer performance. Fins are often used in heat exchange equipment. The heat transfer efficiency of fins is low, and the effect of using a single fin for heat dissipation is average; heat pipes are a special device with rapid temperature uniformity, and are widely used in various heat exchangers due to their light weight and excellent thermal superconductivity. Heater, and the thermal conductivity of the heat pipe exceeds that of any known metal, and the use of heat pipes to assist fins in heat dissipation can greatly improve the overall heat exchange efficiency of the equipment

[0004] At present, patents have proposed a cooling device for molten salt pumps. Utility model CN201821125040.9 proposes a molten salt pump air cooling mechanism. The air duct structure is optimized, and there is still room for improvement in the overall heat dissipation capacity; utility model CN201721091310.4 proposes a molten salt pump cooling device, which uses air cooling and water cooling to dissipate heat, and the cooling effect is obvious, but a larger cooling water tank needs to be installed. The equipment is heavy and the space ratio is large, which does not achieve the effect of space intensive

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