A bell type sealed liquid heavy metal rotating device

Abstract

The invention discloses a bell jar seal liquid heavy metal rotating device which flexibly utilizes a bell jar principle to replace the conventional easy-to-wear mechanical seal, packing seal and a rotating mode driven by a high-temperature demagnetizing electrode magnet rotor, can achieve long-time running under a condition that a shaft seal system is not worn, prevents air due to the fact that equipment is run in a long-term high-temperature environment and subjected to shaft seal wear from entering a polluted experimental area, and avoids changing the shaft seal system regularly. The device comprises a fused salt thawing box, a liquid collecting box, a variable-frequency motor, a bell jar, a support and a shaft sample experimental section, and is simple in structure and easy to operate. The device is in a unique bell shaft seal structure, is provided with the rotating speed-adjustable variable-frequency motor, combines an auxiliary heating and warm-keeping system, and is matched with the replaceable sample experimental section, so that the device can carry out corrosion mechanism researches of structural materials in different speed fields and temperature fields. In addition, the device can be widely applied to the field of industrial equipment corrosion tests and fundamental scientific research projects, and has important scientific research values and engineering application values.

Description

Technical field [0001] The invention relates to a bell-jar type sealed liquid heavy metal rotating device. By creating a high-speed field and a temperature field, it provides an experimental platform for the study of the corrosion behavior characteristics of structural materials in liquid metal, and is used for the application of materials in high-temperature and high-speed fluid fields. Provide technical support and experimental basis for material selection, design and structural optimization. Background technique [0002] Because of its special physical and chemical properties, lead-based alloys have become the spallation target and first choice coolant for the fourth-generation reactor-type liquid heavy metal reactors. However, the compatibility between lead-based alloys and structural materials is a key issue that must be resolved before the commercialization of ADS reactors. Although many studies have been carried out internationally, the flow velocity is all under the cond...

AI Technical Summary

Problems solved by technology

[0004] Existing liquid heavy metal rotating devices are mainly electromagnetically driven, using the principle of interaction between opposite magnetic poles, the rotation of the magnetic pole rotor at one end drives the rotation of the magnetic pole rotor at the other end sealed in the container, although the advantage of this type of device is that it has high sealing performance. However, due to the fact that the device is in a high temperature state in the experimental state, it will affect the magnetic field strength performance of the pole rotor, and high temperature degaussing phenomenon will occur, which will affect the rotation speed, and the rotation experiment research under ultra-high temperature conditions cannot be carried out, so this type of device cannot meet the requirements. High-speed and ultra-high temperature experimental requirements

In addition, conventional mechanical seals and packing seals not only have wear problems, but also require additional gas protection and monitoring measures to prevent outside air from entering the experimental device. This type of device has a complex structure and high cost; and the sealing system will also be in a high temperature state It will also greatly reduce the life of the seal

Images