Abstract

The turbopump comprises a turbine (5) and a pump (8), where the turbine (5) comprises a turbine housing (101) with an impeller (102) of the turbine (5) located therein, the pump (8) comprises a pump housing (104) with an impeller (105) of the pump 8 located therein, where the impeller (102) of the turbine (5) and the impeller (105) of the pump (8) are interconnected by a shaft (103), and between the turbine housing (101) and the pump housing (104) a coupling housing (106) is arranged, characterized in, that a ring-shaped injection nozzle (108) is connected to the inlet of the pump housing (104), having a circumferential groove on the surface adjacent to the pump housing (104), which forms a circumferential cavity (120), when the injection nozzle 108 and the pump housing (104) are connected, where the circumferential cavity (120) comprises two opposite inlet openings (121a), (121b), and nozzles (125).

IPC Classes  ?

• F04D 7/08 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being radioactive
• F04D 9/00 - Priming; Preventing vapour lock
• F04D 13/04 - Units comprising pumps and their driving means the pump being fluid-driven
• F04D 29/42 - Casings; Connections for working fluid for radial or helico-centrifugal pumps
• F04D 29/58 - Cooling; Heating; Diminishing heat transfer
• G21C 15/18 - Emergency cooling arrangements; Removing shut-down heat
• G21C 15/243 - Promoting flow of the coolant for liquids

Abstract

Long-term heat removal system from containment comprises a cold circuit and a hot circuit, where the cold circuit comprises a feed pump station (1) on its one side connected to a source of cooling medium of the cold circuit and by its second side to a small impurity filter (2), which is connected to a main pump station (3), which is connected by inlet closing valve (4) to a turbine (5), and then by cold circuit of a cooler (6) and an outlet closing valve (7) to the source of cooling medium of the cold circuit, the hot circuit comprises a pump (8) of the hot circuit connected on its outlet by a hot circuit of the cooler (6) to a shower (9) arranged in the containment (10), and on inlet by a mechanical strainer (11) to a source of cooling medium of the hot circuit, where the main pump station (3) is connected by a primary extra cooling branch (19a) of the heat circuit to the inlet of the pump (8) of the hot circuit, by which the cooling medium of the cold circuit is mixed with the cooling medium of the hot circuit.

IPC Classes  ?

• G21C 15/12 - Arrangement or disposition of passages in which heat is transferred to the coolant, e.g. for coolant circulation through the supports of the fuel elements from containment vessel
• G21C 15/18 - Emergency cooling arrangements; Removing shut-down heat
• G21D 3/04 - Safety arrangements
• G21D 1/02 - Arrangements of auxiliary equipment