Patent ID: 11906460
Assignee: ZHEJIANG UNIVERSITY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An electrical capacitance volume tomography device for a cryogenic fluid flowing in a Venturi tube, comprising a conductor rod, a metal shell, a Venturi tube, electrode plate sleeves, an electrode plate and annular connecting shells;
wherein two electrode plate sleeves are provided, which form a complete electrode plate device, and an inner surface of the electrode plate device is matched with an outer surface of the Venturi tube and is fixed tightly attached to the outer surface of the Venturi tube; the electrode plate sleeve is provided with a plurality of electrode plate grooves, the shape of which the plurality of electrode plate grooves is matched with that of the electrode plate, and the electrode plate is installed tightly attached to the plurality of electrode plate grooves of the electrode plate sleeve;
two annular connecting shells are provided which form a complete connecting shell device; a peripheral circular diameter of two ends of the electrode plate device is equal to an outer diameter of the connecting shell device, and the two ends of the electrode plate device are fixedly connected with two ends of the connecting shell device, respectively; the annular connecting shells are provided with a plurality of metal hemispheres; the electrode plate on the electrode plate sleeve is welded with the plurality of metal hemisphere through wires;
the metal shell is provided with a plurality of semi-cylindrical grooves matched with the metal hemispheres, an inner diameter of the metal shell is equal to an outer diameter of the connecting shell device, and the metal shell sleeves the circumference of the connecting shell device and is fixed through the plurality of semi-cylindrical grooves; the metal shell is provided with a round hole for installing the conductor rod;
the inside of the conductor rod is a metal conductor, the periphery of the conductor rod is wrapped with an insulating material, and the bottom of the conductor rod is provided with an elastic metal sheet, and a maximum diameter of the conductor rod is the same as that of the round hole on the metal shell and larger than that of the semi-cylindrical groove on the metal shell; the conductor rod is inserted into the round hole to make the elastic metal sheet at the bottom contact with the metal hemisphere on the annular connecting shells, and the conductor rod and the round hole on the metal shell are glued or welded; two ends of the metal shell are connecting flanges with sealing grooves,
wherein the electrode plate device completely wraps the outer surface of Venturi; the two electrode plate sleeves constituting the electrode plate device have the same structure; the two electrode plate sleeves are matched and connected by connecting bosses with barbs and connecting grooves arranged at two ends of the electrode plate sleeves.