Monitoring apparatus and monitoring method in spiral membrane pressure vessel

摘要

PROBLEM TO BE SOLVED: To safely, securely and accurately acquire monitoring data in a pressure vessel, and to perform a further proper operation.SOLUTION: In this monitoring device for monitoring the inside of a spiral membrane pressure vessel which comprises a spiral membrane 28 in a pressure vessel 14, the monitoring device of the spiral membrane pressure vessel 14 has a facility for desalinating pressurized supply water by the spiral membrane 28. The monitoring device also comprises an in-pressure vessel sensor 36 which is arranged outside a collecting pipe 16, and monitors a pressurized part of the pressure vessel 14, and a signal line 26 which is connected from an end face of the pressure vessel 14, and arranged so as to penetrate the inside of the collecting pipe at a center of the spiral membrane toward the outside.SELECTED DRAWING: Figure 1