FIELD: systems for starting non-volume displacement pumps used for pumping liquid media and realizing circulation of heat transfer agent in closed circuits, for example in systems for heat- or hot water supply.
SUBSTANCE: system includes at least two jet pumps arranged in parallel. Each jet pump includes apparatus for supplying passive fluid, nozzle for supplying active fluid and arranged coaxially with it successively mounted mixing chamber and diffuser. Mixing chamber includes at least two conic gradually narrowing portions having successively lowered from portion to portion conicity angle and cylindrical portion. Each pipeline for supplying passive fluid and pipeline for supplying active fluid of each jet pump is provided with respective shut-off valve. At outlet of each jet pump non-return valve is arranged; outlets of non-return valves are connected to common main line and cylindrical portions of mixing chambers of jet pumps are mutually communicated.
EFFECT: simplified process for starting jet pumps.
1 dwg
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