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Machine translation
1. (WO2000058648) ARRANGEMENT FOR SEALING A PUMP SHAFT
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2000/058648    International Application No.:    PCT/IL1999/000182
Publication Date: 05.10.2000 International Filing Date: 29.03.1999
IPC:
F16J 15/34 (2006.01)
Applicants: UNITOR LTD. [IL/IL]; P.O. Box 408 South Industrial Zone 11013 Kiryat Shmona (IL) (For All Designated States Except US).
NASSONOV, Alexander [IL/IL]; (IL) (For US Only)
Inventors: NASSONOV, Alexander; (IL)
Agent: BEN-DAVID, Yirmiyahu, M.; Jeremy M. Ben-David & Co. Ltd. P.O. Box 45087 Har Hotzvim Hi-Tech Park 91450 Jerusalem (IL)
Priority Data:
Title (EN) ARRANGEMENT FOR SEALING A PUMP SHAFT
(FR) SYSTEME D'ETANCHEITE POUR ARBRE DE POMPE
Abstract: front page image
(EN)An arrangement for sealing the rotatable pump shaft (12) of a main pump (30) having a housing (20), and a pump chamber (18) containing a working fluid, includes a stationary support arrangement (16) mounted in association with the housing (20), and a hybrid seal system (11) mounted between the stationary support arrangement (16) and the housing (20), for sealing therebetween, and which includes a rotary seal (22) arranged between the stationary support arrangement (16) and the rotatable shaft member (12) for sealing therebetween, and a dual-purpose pump arranged between the stationary support arrangement (16) and the rotatable shaft member (12) for pumping a buffer liquid therebetween, in association with the rotary seal (22). The rotary seal (22) and the pump (30) are configured, together with the stationary support arrangement (16) and the rotatable shaft member (12), to form between the rotary seal (22) and the pump (30) a generally annular liquid chamber surrounding the rotatable shaft member (12). Furthermore, the dual-purpose pump (46) is operative to pump the buffer liquid through the annular chamber (34) in cooling and cleaning association with the rotary seal (22), and so as to also constitute a dynamic seal, operative to substantially prevent leakage of the working fluid to the exterior of the main pump housing (20) in the event of failure of the rotary seal (22).
(FR)L'invention concerne un système permettant d'assurer l'étanchéité de l'arbre rotatif d'une pompe principale comprenant un corps de pompe et une chambre d'aspiration contenant un fluide moteur. Ce système comprend un ensemble support fixe relié au corps et un système d'étanchéité hybride monté entre l'ensemble support fixe et le corps de pompe pour assurer l'étanchéité entre les deux. Il comprend en outre un joint pour mouvement rotatif disposé entre l'ensemble support fixe et l'élément d'arbre rotatif pour assurer l'étanchéité entre ces deux éléments, ainsi qu'une pompe à double usage installée entre l'ensemble support fixe et l'élément d'arbre rotatif et servant à pomper un liquide tampon entre les deux, cette pompe coopérant avec le joint pour mouvement rotatif. Le joint pour mouvement rotatif et la pompe sont configurés pour former, avec l'ensemble support fixe et l'élément d'arbre rotatif, une chambre de liquide sensiblement annulaire entourant l'élément d'arbre entre le joint rotatif et la pompe. La pompe à double usage sert en outre à pomper le liquide tampon à travers la chambre annulaire en coopération avec le joint rotatif ce qui outre une fonction de nettoyage et de refroidissement assure un scellement dynamique, permettant de prévenir dans sensiblement les fuites du fluide moteur vers l'extérieur du corps de la pompe principale en cas de défaillance du joint pour mouvement rotatif.
Designated States: AE, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZA, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, SD, SL, SZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)