Patent ID: 9175992
Filing Date: 2015-11-03
Classification: G01F

Abstract:
1. An electromagnetic flow meter provided with a resin lining portion in which resin is lined in a measuring pipe by pressure molding, comprising: the measuring pipe to flow liquid to be measured; a lining locking frame provided in the measuring pipe and composed of a cylindrical plate with openings and a plurality of belt shaped ring plates; and the resin lining portion formed by embedding the lining locking frame; wherein the cylindrical plate with openings is formed by facing both end faces of a belt shaped plate with openings with a prescribed length in a circumference direction of the measuring pipe so that the belt shaped plate with openings becomes a cylindrical shape concentric with the measuring pipe; wherein a plurality of the belt shaped ring plates are pasted with a prescribed interval around the outer circumference of the cylindrical plate with openings in the pipe axis direction of the measuring pipe; wherein the cylindrical plate with openings is provided with not less than two cutout portions from an end which are provided alternately from the both ends in the pipe axis direction and so as to overlap one another in the pipe axis direction; wherein in addition, a thickness of each of the plurality of belt shaped ring plates is a prescribed thickness, and a first gap is provided between the inner face of the measuring pipe and the outer circumference face of the cylindrical plate with openings; and wherein the resin to be lined can be filled in gaps between the measuring pipe and the lining locking frame during pressure molding of the resin lining portion via gaps formed by the cutout portions.