Online monitoring method and device for gas pipeline in key area

The invention discloses a key area gas pipeline on-line monitoring method and device, and belongs to the technical field of inspection and detection.The key area gas pipeline on-line monitoring device comprises a plurality of phased array probes which are arranged on the outer side wall of a gas pipeline and used for scanning pipeline defects, the phased array probes are in communication connection with a data converter at the same time, and the data converter is located on a control host; the control host is in communication connection with a monitoring management platform, and the monitoring management platform is in communication connection with a user terminal; the control host comprises a control module and is used for controlling the phased array probe during defect scanning; the storage module is used for storing various data related to the phased array probe; and the network module is used for communicating with the monitoring management platform. The problems that the gas pipeline detection cost is h