Subsea pipeline ovality measuring device

The utility model discloses a subsea pipeline ovality measuring device. The subsea pipeline ovality measuring device comprises a fixing frame and one or more circular measuring rings used for being arranged on the periphery of a subsea pipeline in a sleeving mode. The measuring ring is arranged in the fixing frame, the peripheral side face of the measuring ring is connected with the fixing frame,and an inner channel of the measuring ring forms a testing channel for a subsea pipeline to pass through. The subsea pipeline ovality measuring device is used for rapidly measuring the ovality of thesubsea pipeline, especially the ovality of the cut end of the subsea pipeline, so that a mechanical connector can be smoothly installed at the cut end of the subsea pipeline in subsequent procedures,and the problem that the connector is unqualified in sealing due to the fact that the ovality of the subsea pipeline does not meet requirements in the subsea pipeline maintenance process is effectively prevented. The subsea pip