Measuring pipe lining film protection device of electromagnetic flowmeter in pipeline with steam adjoining pipe

The utility model relates to a measuring pipe lining film protection device of an electromagnetic flowmeter in a pipeline with a steam adjoining pipe. The problem that an existing measuring pipe lining film is damaged is solved. The technical scheme is that the measuring pipe lining film protection device comprises the electromagnetic flowmeter installed on the pipeline with the steam adjoining pipe, wherein stop valves are installed on the pipeline at the liquid inlet end and the liquid outlet end of a measuring pipe of the electromagnetic flowmeter, a pressure supplementing unit is further connected onto the pipeline between the liquid inlet end or the liquid outlet end and the corresponding stop valve and comprises an inert gas filling pipeline connected with the liquid inlet end or the liquid outlet end of the electromagnetic flowmeter. The measuring pipe lining film protection device is simple in structure and simple and convenient to operate, enables a lining film to be in a safe using state for a long