Capillary pipeline purging and drying system

Abstract

The invention relates to a capillary pipeline purging and drying system. The system comprises a first gas supply device and a drying device, wherein the first gas supply device comprises a gas supplyport and can supply purging gas with rated pressure to the outside through the gas supply port; the drying device comprises an input end and an output end, the input end communicates with the gas supply port of the first gas supply device through a first pipeline, and the drying device is used for receiving and drying the purging gas provided by the first gas supply device; and the output end canbe connected with an inlet of a capillary pipeline, so that the dried purging gas is conveyed into the capillary pipeline to realize purging and drying of the surface of an inner cavity of the capillary pipeline. According to the embodiment of the invention, the interior of the capillary pipeline with a very small pipe diameter can be quickly cleaned, the internal environment of the capillary pipeline tends to be stable after the capillary pipeline is dried and purged, the capillary pipeline can be repeatedly used, and requirements for the use and measurement precision of a nuclear-grade transmitter can be met; and according to the embodiment, the capillary pipeline does not need to be replaced frequently, the cost of capillary pipeline spare parts is saved, and the delay risk of the wholemaintenance and overhaul plan is reduced.

Description

technical field [0001] The invention relates to the field of nuclear power equipment maintenance, in particular to a capillary line purging and drying system. Background technique [0002] It is self-evident that the nuclear grade transmitter participates in the monitoring of the core water level, especially in the case of loss of water, it can directly monitor the water content of the core and prevent the core from being exposed. However, as the service time increases, the failure rate of nuclear-grade transmitters also increases; if a failure occurs, it is necessary to adopt a maintenance strategy for the overall replacement of the on-site transmitter. [0003] In the operation of replacing and installing nuclear-grade transmitters, the key technology is vacuum pumping and liquid filling technology, which is complex in process, technically difficult, and takes a long time to replace. In particular, the replacement of the capillary line needs to cross the high-radiation pr...

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a capillary line purging and drying system for the frequent replacement of the capillary line during the maintenance of the nuclear transmitter, which is complicated and has a high risk of maintenance operation.

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