Two-phase flow exciting force evaluation method and device acting on a plurality of tube bodies arranged to intersect with the flow
AssigneeMitsubishi Heavy Industries, Ltd.
InventorsYoshiyuki Kondo, Kenji Nishida
Life of this patent
Estimating the term…
Abstract
In a two-phase flow exciting force evaluation method of the present invention, the surface of one of a plurality of tube bodies (3) is at least partially formed from a conductive material, displacement or stress of the tube body (3) is measured in a state of being vibrated by a shaking device (4), and a void fraction of a two-phase flow (F) flowing in the vicinity of the tube body (3) is measured based on the potential difference between an electric potential at a predetermined position on the surface of the tube body (3), and a reference electric potential.
Claims17
A two-phase flow exciting force evaluation method for evaluating an exciting force which acts, from a two-phase flow flowing in a flow section, on a plurality of tube bodies arranged orthogonally in the flow section so as to intersect with the flow of the two-phase flow, comprising:
- forming a surface of one of the plurality of tube bodies at least partially from a conductive material;
- measuring displacement or stress of the tube body in a state of being vibrated by a shaking device;
- and
- measuring each void fraction of the two-phase flow flowing in the vicinity of the tube body, based on a potential difference between an electric potential at a predetermined position on the surface of the tube body, and a reference electric potential.
A two-phase flow exciting force evaluation device for evaluating an exciting force which acts, from a two-phase flow flowing in a flow section, on a plurality of tube bodies arranged orthogonally in the flow section so as to intersect with the flow of the two-phase flow, comprising:
- a vibration pipe which is configured as one of the plurality of tube bodies, and a surface of which is at least partially formed from a conductive material;
- a shaking device that vibrates the vibration pipe;
- an exciting force evaluation device that measures displacement or stress of the vibration pipe;
- and
- a void fraction measuring device that measures each void fraction of the two-phase flow flowing in the vicinity of the vibration pipe, based on a potential difference between an electric potential at a predetermined position on the surface of the vibration pipe, and a reference electric potential.
Dependencies are inferred from the claim text.