PUMPING SYSTEM, IN PARTICULAR FOR SUPPLYING CONTACT RING SEAL SYSTEM Russian patent published in 2021 - IPC F04D29/12 F04D13/02 F04D1/04 

FIELD: sealing.

SUBSTANCE: invention relates to a contact ring seal system. The system comprises a contact ring seal (2a, 2b) having rotating and stationary contact rings (3, 4) which define a sealing gap (5). The system also has a circulating loop (7) of a fluid medium with a pumping system for supplying a medium to a seal (2a, 2b). The pumping system comprises one drive (11) with a drive shaft (24), a radial pump (23) and first and second axial pumps (21, 22) which pump the fluid medium in an axial direction (X-X) and are located in front of the pump (23) which pumps the medium in a radial direction (R). The drive (11) simultaneously drives the pumps (21, 22, 23). The pumping system has a magnetic clutch (30) with a driving part (30a) and first permanent magnets (31), a fixed hollow cylinder (33) and a driven part (30b) with second permanent magnets (32). The magnets (31) in the axial direction (X-X) are shifted (A) relative to the magnets (32), with the magnets (31) partially overlapping the magnets (32) in the radial direction (R).

EFFECT: invention aims at producing a high pressure for fluid medium for a contact ring seal system with a simple structural design and a simple economical production thereof.

12 cl, 2 dwg