FLOW STRAIGHTENER, FLOW STRAIGHTENING TUBE WITH THE STRAIGHTENER, AND FLOWMETER

摘要

PROBLEM TO BE SOLVED: To provide a flow straightener trimming the flow of fluid into a stable state without increasing the pipeline length.;SOLUTION: This flow straightener 10 is constituted of an obstruction part 11, an intermediate part 12, and an outflow part 13. The obstruction part 11 is formed in a circular cross section concentric to a flow pipe and restricts the fluid positioned at the center part of the flow line among the fluid from the upstream side (indicated by an arrow) to the inner peripheral wall side of the flow pipe. The intermediate part 12 is formed in a columnar body part leading to the downstream side of the obstruction part 11 and forms a cylindrical body concentric to the obstruction part 11 and having a diameter smaller than that of the obstruction part 11. The outflow part 13 is formed in a columnar body part leading to the downstream side of the intermediate part 12 and forms a cylindrical body concentric to the obstruction part 11 and having a diameter matching the inner diameter of the flow pipe and has a plurality of through-holes 14 restricted to the flow pipe inner peripheral wall side by the obstruction part 11 and letting out the fluid passed through the side face of the intermediate part to the downstream side. The through-hole 14 has a space 14a letting out the fluid part or the whole of the inflow part thereof, at the position corresponding to inside the diameter of the obstruction part 11 and outside the diameter of the intermediate part 12 seen from the front face of the flow.;COPYRIGHT: (C)2004,JPO