Device for diverting a gas flow through a single-blade flag...

F - Mech Eng,Light,Heat,Weapons – 16 – K

Patent

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Details

F16K 11/052 (2006.01) F16K 27/02 (2006.01) F16K 31/52 (2006.01)

Patent

CA 2561664

A diverter device including primary and secondary straight-line duct sections (1, 6) having a tubular quadrangular cross-section, wherein the inlet (7) of the second section (6) is located in a wall (10) of the primary section (1), a quadrangular blade is pivotably mounted in the primary section (1) via one edge (28) thereof between a position in which it seals the inlet (7) of the second section (6), i.e. an open position enabling communication with a primary air flow circuit, and a position in which the blade (27a) seals off the primary air flow circuit and diverts the incoming gas flow into the secondary section (6), as well as a connecting rod assembly (39) controlling the blade (27). The blade comprises a machined quadrangular annular bearing surface (35) engageable with a machined seat (6a) at the upstream end of the secondary section (6), and the blade (27) is pivotably mounted with limited radial clearance relative to the transverse pivot axis (XX). The device is particularly useful in facilities for processing flue gases from electrolytic cells for aluminium production.

Le dispositif de déviation comprend des tronçons de conduit primaire et secondaire (l, 6), rectilignes, tubulaires de section transversale quadrangulaire, dont l'entrée (7) du second (6) s'ouvre dans une (10) paroi du tronçon primaire (1), un clapet quadrangulaire pivotant par un bord (28) dans le tronçon primaire (1) entre une position dans laquelle il ferme l'entrée (7) du tronçon secondaire (6), ou position d'ouverture vers un circuit aéraulique primaire, et une position dans laquelle le clapet (27a) ferme le circuit aéraulique primaire, et dévie le flux gazeux entrant vers le tronçon secondaire (6), et un embiellage (39) man.oelig.uvrant le clapet (27). Ce dernier comporte une portée (35) annulaire quadrangulaire usinée d'appui étanche contre un siège (6a) usiné à l'extrémité amont du tronçon secondaire (6), et le clapet (27) est monté pivotant avec un jeu radial limité par rapport à l'axe géométrique transversal (XX) de pivotement. Application notamment aux installations de traitement des flux gazeux issus de cuves d'électrolyses d'aluminium.

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