Nuclear power chemical pipeline ice jam isolation testing device

Abstract

The invention relates to the field of machinery, in particular to a nuclear power chemical pipeline ice jam isolation testing device. At present, in China, the situation that an ice jam serves as an effective isolation means is not widely applied. The nuclear power chemical pipeline ice jam isolation testing device comprises a supporting frame, an ice jam experiment pipeline, a pipeline deformation detection device, a strain measurement device, a temperature measurement device, a pressure measurement device, a transmission light source, a high-speed camera and an ice jam preparation device, The two ends of the ice jam experiment pipeline are fixedly sealed through flanges, the strain measurement device is in contact connection with the upper side of the ice jam experiment pipeline, the pipeline deformation detection device and the temperature measurement device are in contact connection with the lower side of the ice jam experiment pipeline, and the supporting frame fixedly supports the ice jam experiment pipeline. The nuclear power chemical pipeline ice jam isolation testing device has the advantages of simple operation, obvious effect, reliability and the like, so that the devicecan be popularized in nuclear power plants and chemical enterprises.

Description

technical field [0001] The invention relates to the field of machinery, in particular to an ice plug isolation test device for nuclear power chemical pipelines. Background technique [0002] Nuclear safety is the lifeline of the nuclear power industry and the premise and basis for maintaining the sustainable, stable and healthy development of nuclear power. Nuclear power plants have a lot of equipment, complex structures and many process systems, and the maintenance workload is heavy. When the equipment on the pipeline in the system needs to be disassembled or must be dismantled for maintenance, the upstream and downstream of the equipment must be isolated or the precious liquid in the entire piping system must be drained or even the entire plant must be shut down. Then, when there is no isolation device near the equipment to be repaired in the system, or the isolation device is temporarily unavailable, and considering the safety of the system (some systems must be filled w...

AI Technical Summary

Problems solved by technology

For how to use the ice plug jacket to make ice plugs, how to characterize its temperature and the impact of ice plugs on the performance of pipeline materials, whether the stress generated when using ice plugs will affect the material, and whether the performance of the material will change at low temperature Or the extent of the change, whether the ice plug technology is suitable for pipes with different diameters, whether the pipes can withstand the freezing stress, how to control the cooling rate of the pipes in order to prevent the possible plane defects from occurring due to the excessive lateral temperature gradient of the pipe wall, etc. Practical and serious problems have not been resolved, which to a large extent also limits the widespread application of the ice block isolation method in China

As a result, how to use the ice plug technology is still in the exploratory stage, and these problems limit the further development and promotion of the ice plug technology

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