Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Technetics Group France Sas

Technetics Group LLC

Areva Np Gmbh

Armines

Garlock France Sas

Jean-François Juliaa

Michel Lefrancois

Christophe Darles

Mark S Whitlow

Laurent Guimet

Florent Ledrappier

James S Hicks

Magali Reytier

Philippe Caplain

Ludovic Morice

Lionel Bruguiere

Jacques Besson

Olivier Constant

Tony Zaouter

Thierry David

Jean-Yves Ricot

Marin Teissier

David Lombard

Jean-Jacques Darque

Sophie Parsy

Bruno Rouchouze

Stéphane Guignard

Laurence Reinert

Damien Hudry

Grégory Tocheport

Hervé Fuzellier

A metal O-ring is provided. The metal O-ring has a sidewall with an outer surface and an inner surface. The outer surface of the sidewall is machined to selectively thinning the thickness of the sidewall, such that the sidewall of the of the metal O-ring has a plurality of thicknesses equal to or less than a maximum thickness and equal to or more than a minimum thickness. Selectively thinning the sidewall by machining the outer surface allows for control of the elasticity of the metal O-ring. Controlling the elasticity of the metal O-ring, and potentially increasing the spring back, may provide for increased contract pressure at a sealing interface, which would facilitate sealing. The machined outer surface of the metal O-ring are generally machined to flat surfaces.

Metal O-ring seal

A metallic sealing assembly between a rotating shaft and a fixed frame comprises: a flexible metallic seal having two tori, inner and outer, that are concentric and of different average diameters, comprising a metal envelope which encases and holds the inner and outer tori; a shaft rotating about an axis of rotation, comprising an annular shoulder against which the seal comes to press; a counter-face, comprising a contact face against which the seal comes to press; a wedge block positioned around the rotating shaft such that the seal is held between the wedge block and the contact face, the wedge block mounted to slide on the rotating shaft; a metal part which forms a cap through which the rotating shaft passes and which is secured to the frame and/or to the counter-face, the rotating shaft being free to rotate with respect to the cap and axially secured to the cap.

Metallic sealing assembly for sealing between a rotating shaft and a fixed frame

A static metal seal comprising an outer sealing layer, wherein the outer sealing layer comprises a textured surface that is configured to come into contact with the surfaces that are to be sealed, the textured surface comprising a network of depressions spaced apart from one another on the textured surface, wherein the depressions are blind, do not pass all the way through the outer sealing layer, and do not communicate with one another.

Metal seal comprising a textured outer sealing layer

The disclosure relates to a seal inserted between two elements having different coefficients of thermal expansion, the seal includes a first and a second metallic contact portion spaced along an axial stacking direction orthogonal with respect to a radial direction. Tight connection means between the first and second contact portions allow a relative movement between the first and second contact portions along the radial direction. A first and a second sliding part are respectively coupled in translation along the radial direction with the first and second contact portions and are stacked so as to be able to slide in relation to each other along the radial direction.

Seal between two elements having different coefficients of thermal expansion

A static sealing element () includes an elastic tapered washer () the deformation of which enables a force to be transmitted, a casing () to establish the seal, and two supporting washers (and) which transmit the forces originating from the elastic washer () to the curved edges () of the casing () so as to exert on them a pressure which maintains the seal. The casing () made thus be manufactured from a ductile material, but one which is less deformable than the customary elastomers.

Sealing element having an elastic tapered washer and casing to exert pressure

A method including placing around the shoulder of the lid a ring-shaped gasket formed by a metal strip maintained on the vertical wall of the shoulder by self-maintaining members firmly attached to the strip, placing the lid bearing the ring-shaped gasket above the vessel by positioning it at a determined height, carrying out a cleanliness inspection of the gasket plane, lowering and laying the lid on the vessel so that the end side edges of the strip will come into contact with a horizontal wall of the lid and of the vessel flange respectively and attaching this lid on the vessel.

Method for securing and confining the gasket plane of a vessel of a nuclear reactor and a gasket for applying this method

Growing community of inventors

Montelimar, France

Jean-François Juliaa