Novel V-cone flowmeter

The utility model discloses a novel V-cone flowmeter, and relates to the technical field of flowmeters. In the prior art, a V-cone flow meter is fixedly connected with a V-cone flow meter body in a welding mode, the V-cone flow meter is very troublesome to disassemble after being manufactured, when the flow changes, the whole machine needs to be redesigned, manufactured and calibrated, flexibilityis poor, and once parameters change, large unnecessary economic losses are brought to users. According to the scheme, the device comprises a measuring tube, the side wall of the measuring tube is respectively communicated with a positive pressure tapping tube and a negative pressure tapping tube; a V-shaped conical core is arranged in the measuring tube, a flow guide tube coaxial with the measuring tube penetrates through the V-shaped conical core, a supporting tube communicated with the negative pressure tapping tube is arranged at the end, close to the contraction portion of the V-shaped conical core, of the flow g