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Machine translation
1. (WO1980001952) METHOD AND APPARATUS FOR THE LEAK TESTING OF FILTERS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/001952    International Application No.:    PCT/US1980/000189
Publication Date: 18.09.1980 International Filing Date: 27.02.1980
IPC:
G01M 3/20 (2006.01)
Applicants:
Inventors:
Priority Data:
17289 05.03.1979 US
Title (EN) METHOD AND APPARATUS FOR THE LEAK TESTING OF FILTERS
(FR) METHODE ET APPAREIL DE CONTROLE DES FUITES DES FILTRES
Abstract: front page image
(EN)A method and apparatus for the leak testing of one or more filters, which requires minimum space, and which comprises a housing (12) adapted to sealably mount the filters (30), supply pipes (40, 41) for introducing DOP particles within the housing and immediately upstream of each of the filters, and a restriction member (54) mounted in the housing upstream of each filter and downstream of the point at which the DOP is introduced. The member (54) may be selectively positioned to assume an operative position transverse to the airstream wherein it acts to condense and mix the airstream and DOP and then disperse the mixture over the full frontal area of the adjacent filter, or a non-operative position wherein the member is substantially withdrawn from the airstream. A sampling device (70) is also mounted downstream of each filter for monitoring the airstream to detect DOP particles, and thereby permit a determination as to whether any of the particles are leaking through or around the filter.
(FR)Methode et appareil pour controler les fuites d"un ou plusieurs filtres, necessitant peu d"espace, et comprenant une enceinte (12) adaptee au montage etanche des filtres (30), des tubes d"alimentation (40, 41) pour l"introduction de particules DOP dans l"enceinte et immediatement en amont de chacun des filtres, et un organe de restriction (54) monte dans l"enceinte en amont de chaque filtre et en aval du point auquel les DOP sont introduits. L"organe (54) peut etre positionne selectivement pour avoir une position de travail transversale au courant d"air de maniere a agir pour condenser le courant d"air et le melanger avec les DOP puis a disperser le melange sur toute la surface frontale du filtre adjacent, ou une position de repos ou l"organe est sensiblement retire ou degage du courant d"air. Un dispositif d"echantillonnage (70) est egalement monte en aval de chaque filtre pour controler le courant d"air pour detecter les particules DOP et permettre ainsi une determination pour savoir si des particules fuient au travers ou autour du filtre.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)