Sealed closure means for an opening of a junction pipe of a vessel and a conduit, in particular for a steam generator of a pressurised water nuclear reactor

• Main Authors: RUIZ, GUILLAUME, CHEVALIER, PIERRE, LE GALL, LIONEL, CARLES, BLAISE
• Format: Patent
• Language: Chinese; English
• Published: 16.11.2010
• Subjects: BLASTING; CYLINDERS; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; METHODS OF STEAM GENERATION; NUCLEAR ENGINEERING; NUCLEAR PHYSICS; NUCLEAR POWER PLANT; NUCLEAR REACTORS; PHYSICS; PIPES; PISTONS; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SEALINGS; STEAM BOILERS; STEAM GENERATION; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THERMAL INSULATION IN GENERAL; WEAPONS

The invention relates to a sealed closure means (10) for an opening of a pipe (6) for a junction of a vessel and a conduit, comprising a fixing ring (8). The closure means (10) comprises a rigid support plate (20) and a sealing member (30) which is carried by the support plate (20) and comprises a seal which comprises a planar, flexible, thin central portion which extends below the support plate (20) and a peripheral portion which can be radially deformed by a central expansion means (40) of the peripheral portion against the inner surface of the fixing ring (8).