US 12,188,489 B1
Guide vane body with vortex suppression structure ring and axial-flow nuclear reactor coolant pump
Dan Ni, Zhenjiang (CN); Bo Gao, Zhenjiang (CN); Shiyuan Huang, Zhenjiang (CN); Zhong Li, Zhenjiang (CN); and Yanna Sun, Zhenjiang (CN)
Assigned to Jiangsu University, Zhenjiang (CN)
Filed by Jiangsu University, Zhenjiang (CN)
Filed on Jul. 12, 2024, as Appl. No. 18/770,927.
Claims priority of application No. 202311086694.0 (CN), filed on Aug. 28, 2023.
Int. Cl. F04D 29/66 (2006.01); G21C 15/243 (2006.01)
CPC F04D 29/669 (2013.01) [G21C 15/243 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A guide vane body with a vortex suppression structure ring, comprising a rim cover plate, a hub cover plate, guide vane blades and a diffuser, wherein the hub cover plate is coaxially arranged in the rim cover plate, and a flow channel is placed between the hub cover plate and the rim cover plate, and the guide vane blades are placed in the flow channel in an array; and an outlet end of the hub cover plate is connected with the diffuser, and an outer wall of the diffuser is gradually expanding along a fluid flow direction;
a diversion ring is arranged circumferentially on an inner wall at an outlet side of the rim cover plate, and the vortex suppression structure ring is placed at an end surface of the diversion ring at an outlet side;
an inlet of the vortex suppression structure ring is flush with an outlet of the diversion ring, and extends along the fluid flow direction, and n layers of serration rings are coaxially arranged on an end surface of the vortex suppression structure ring at an outlet side;
a cross-section of the serration rings on the vortex suppression structure ring is an equilateral triangle;
a length of a serration side of the serration rings is x, and a value range of x is (⅛-⅕)B, wherein B is a thickness of the outlet side of the diversion ring;
a height of the vortex suppression structure ring is H, and the thickness of the outlet side of the diversion ring is B, and a relationship is H=(1-1.5)B.