US 12,444,513 B2
Piping enhancement for backflow prevention in a multiple loop, metal cooled nuclear reactor system
Eric Paul Loewen, Wilmington, NC (US); Seth Ryan Paul Strege, Wilmington, NC (US); Nicholas Francis O'Neill, Alpharetta, GA (US); Colin Christopher O'Connor, Atlanta, GA (US); Chelsea Ann Curtin, Atlanta, GA (US); and Edwin Wu, Houston, TX (US)
Assigned to GE-HITACHI NUCLEAR ENERGY AMERICAS LLC, Wilmington, NC (US)
Filed by GE-Hitachi Nuclear Energy Americas LLC, Wilmington, NC (US)
Filed on Apr. 10, 2024, as Appl. No. 18/631,704.
Application 18/631,704 is a division of application No. 16/507,659, filed on Jul. 10, 2019, granted, now 11,978,565.
Application 16/507,659 is a division of application No. 14/960,511, filed on Dec. 7, 2015, granted, now 10,354,763, issued on Jul. 16, 2019.
Prior Publication US 2024/0274305 A1, Aug. 15, 2024
Int. Cl. G21C 15/247 (2006.01); F15D 1/02 (2006.01); F16K 15/00 (2006.01); F16K 15/02 (2006.01); F16K 99/00 (2006.01); B33Y 80/00 (2015.01); F04B 17/00 (2006.01); F04B 17/04 (2006.01)
CPC G21C 15/247 (2013.01) [F15D 1/02 (2013.01); F16K 15/00 (2013.01); F16K 15/02 (2013.01); F16K 99/0021 (2013.01); F16K 99/0057 (2013.01); B33Y 80/00 (2014.12); F04B 17/00 (2013.01); F04B 17/04 (2013.01); F16K 2099/0076 (2013.01); F16K 2099/008 (2013.01); Y02E 30/30 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method manufacturing a backflow reduction pipe comprising:
machining at least one tubular section, the tubular section having a first diameter, the first diameter being a uniform along a length thereof; and
machining at least one fluid diode section configured to restrict backflow, the fluid diode section including,
a first section having a second diameter at a largest point of the first section, and
a second section having a third diameter at a largest point of the second section, the first section closer to an inlet of the pipe than the second section, the first section having a first radius at a widest point thereof, the second section having a second radius at a widest point thereof, the first radius being 1.9 to 2.2 times the second radius of the second section, and the first section and the second section being generally frustoconical in cross-section,
wherein the at least one fluid diode section has a second length and the second section has a third length, and
wherein the second length is about 1.9 to about 2.2 times the third length of the second section.