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Machine translation
1. (WO1981002184) PUMP SAFETY DEVICE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/002184    International Application No.:    PCT/FR1981/000006
Publication Date: 06.08.1981 International Filing Date: 22.01.1981
IPC:
F04D 29/14 (2006.01)
Applicants:
Inventors:
Priority Data:
8001517 24.01.1980 FR
Title (EN) PUMP SAFETY DEVICE
(FR) DISPOSITIF DE SECURITE POUR POMPE
Abstract: front page image
(EN)Safety device ensuring the longitudinal tightness of a pump shaft (1) in case of breaking of the dynamic gasket (3) separating the high pressure chamber (4) from the low pressure chamber (5) of the pump. According to the invention, the device comprises a cylindrical hollow piston (12) coaxially surrounding the pump shaft (1), and means (15, 16) allowing the axial displacement of this piston (12) in order to compress between the shaft (1) and the piston (12) a toroidal safety gasket in case of failure of the dynamic gasket (3). Application to primary pumps of nuclear reactors.
(FR)La presente invention concerne un dispositif de securite assurant l"etancheite longitudinale de l"arbre (1) d"une pompe en cas de rupture du joint dynamique (3) separant la chambre a haute pression (4) de la chambre a basse pression (5) de la pompe. Selon l"invention, le dispositif comprend un piston cylindrique creux (12) entourant coaxialement l"arbre (1) de la pompe, et des moyens (15, 16) permettant de deplacer axialement ce piston (12) de maniere a comprimer entre l"arbre (1) et le piston (12) un joint torique (14) de securite en cas de defaillance du joint dynamique (3). Application aux pompes primaires des reacteurs nucleaires.
Designated States:
Publication Language: French (FR)
Filing Language: French (FR)