公开(公告)号：US10902960B2

公开(公告)日：2021-01-26

申请号：US16934479

申请日：2020-07-21

申请人： BWXT Canada Ltd.

发明人： Kareem M. A. Aly

IPC分类号： G21C15/22 ,  F22B37/20 ,  F28D7/06 ,  F28F9/013 ,  G21D1/00 ,  G21C15/14 ,  G21C15/24 ,  G21C15/243 ,  F22B1/02

摘要： Arrangement for supporting U-bend tube sections in the high heat environment of steam generators using flat bars. The invention uses a combination of thicker and thinner flat bars to impart a serpentine path to the arc of the normally curvilinear U-tubes. The support system accommodates the dilation and contraction of coolant tubes and other elements caused by the extreme and varying conditions inside a steam generator, and which can cause gaps between coolant tubes and prior art tube support bars. Bars of alternating thickness provide alternating offsets to tensionally push and support each tube on multiple sides and in multiple locations, and this tension keeps the tubes in contact with at least some flat bars on multiple sides regardless of size and shape changes. Support arrangement includes a set of fan bars, each fan bar including thick and thin flat bars projecting up and out from a collector bar.

公开(公告)号：US12130009B2

公开(公告)日：2024-10-29

申请号：US16934822

申请日：2020-07-21

申请人： BWXT Canada Ltd.

发明人： Kareem M. A. Aly

IPC分类号： F22B1/02 ,  F22B1/06 ,  F22B1/16 ,  F22B37/00 ,  F28D7/16 ,  F28F9/22

CPC分类号： F22B1/028 ,  F28D7/16 ,  F28F9/22

摘要： A steam generator includes a shroud and an annular stepwise helical baffle extending along at least part of a length of the shroud. There is a riser located in a central region of the steam generator. The helical baffle is made up of at least one annular sector of flat plates. The edges of the flat plates may be straight or corrugated.

公开(公告)号：US11699532B2

公开(公告)日：2023-07-11

申请号：US17131922

申请日：2020-12-23

申请人： BWXT Canada Ltd.

发明人： Kareem M. A. Aly

IPC分类号： F28D9/00 ,  G21C15/22 ,  F22B1/02 ,  F22B37/20 ,  F28D7/06 ,  F28F9/013 ,  G21C15/14 ,  G21C15/24 ,  G21C15/243 ,  G21D1/00

CPC分类号： G21C15/22 ,  F22B1/023 ,  F22B37/205 ,  F28D7/06 ,  F28F9/013 ,  G21C15/14 ,  G21C15/24 ,  G21C15/243 ,  G21D1/00

摘要： Arrangement for supporting U-bend tube sections in the high heat environment of steam generators using flat bars. The invention uses a combination of thicker and thinner flat bars to impart a serpentine path to the arc of the normally curvilinear U-tubes. The support system accommodates the dilation and contraction of coolant tubes and other elements caused by the extreme and varying conditions inside a steam generator, and which can cause gaps between coolant tubes and prior art tube support bars. Bars of alternating thickness provide alternating offsets to tensionally push and support each tube on multiple sides and in multiple locations, and this tension keeps the tubes in contact with at least some flat bars on multiple sides regardless of size and shape changes. Support arrangement includes a set of fan bars, each fan bar including thick and thin flat bars projecting up and out from a collector bar.