Tight connection between fission gas discharge channels

US4202732A · kind A · utility

Assignees

• Kraftwerk Union Aktiengesellschaft · DE
• Kernforschungsanlage Lulich Gesellschaft mit beschrankter Haftung · DE

Inventors

• Wilfried Jung
• Martin Peehs · Bubenreuth, DE
• Peter Rau · Leutenbach, DE
• Wolfgang Krug · Jülich, DE
• Horst Stechemesser · Linnich, DE

Key dates

• Filing date: Jul 20, 1977
• Grant date: May 13, 1980
• Expiry date: Jul 20, 1997

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E30/30
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A gas-cooled nuclear reactor, having a tight connection with an intentionally provided leak site between a fission-gas discharge channel formed in a reactor core carrying plate as well as in a head portion of encased fuel elements that are suspended in receiving bores formed in the core carrying plate, the tight connection being formed by an annular member having a sealing surface engaging the core carrying plate at a region thereof in which an opening to the fission-gas discharge channel formed in the core carrying plate is located, a gas-tight, elastic and substantially cylindrical member, variable in length, connecting the annular member to the fission-gas discharge channel formed in the head portion of the fuel element, compression spring means biasing the annular member in a direction away from the fission gas discharge channel formed in the fuel-element head portion, and a sealing abutment plate secured to a central pin and limiting clearance for play of the annular member with respect to an annular zone thereof disposed within the sealing surface of the annular member, the leak site including a radial bore formed in and extending through the annular member between the annula…