Vortex street flowmeter

The utility model relates to a vortex shedding flowmeter which comprises a sleeve, a heat insulation plate and a cooling fin, a first flange plate is fixed to the top of a connecting base, the sleeveis located above the connecting base, a second flange plate is fixed to the bottom end of the sleeve, and the heat insulation plate is located between the connecting base and the sleeve. The first flange plate, the heat insulation plate and the second flange plate are detachably and fixedly connected. The heat insulation plate is arranged between the sleeve and the connecting seat, the sleeve andthe connecting seat are isolated, heat transferred from the connecting seat to the sleeve is reduced, the temperature of the sleeve is reduced, the cooling effect is indirectly achieved, the sleeve isdesigned to be of a double-layer structure, circulating cold water can be introduced into the cooling cavity to cool the sleeve, and the service life of the sleeve is prolonged. Therefore, the vibration sensing element is indi