UNDERWATER VEHICLE POWER UNIT Russian patent published in 2023 - IPC F02G1/04 

FIELD: shipbuilding.

SUBSTANCE: invention relates to air-independent ship power plants for underwater vehicles operating in a closed cycle without access to atmospheric air. The power plant of the underwater vehicle includes a thermal gas turbine engine, an automatic control system, an inlet system formed by a receiver-mixer and an exhaust gas heat regenerator, an exhaust gas cooler installed in series, a filter-moisture separator, a recirculation control valve connected by its outputs to the receiver-mixer and to the compressor carbon dioxide removal system, which is designed to operate at a gas operating pressure of 1.6 - 2.0 MPa and in which a pressurized gas cooler, a filter-moisture separator, a carbon dioxide condenser are installed after the compressor, the cooling chamber of which is connected to at least one cryogenic storage tank for the liquid oxidizer of the system for storing and supplying the liquid oxidizer and with a cold flow mixer connected through a pressure reduction device to a unit for separating liquid CO₂ connected to the storage tank for liquid CO₂, an exhaust gas cooling system, heat-insulated pipelines with fittings, including automatic valves that are connected by control connections to the automatic control system. The plant is equipped with a closed gas circuit, including a heat recovery gas turbine engine with a compressor and a turbine, a gas-to-water cooler and a waste gas heater, the exhaust gas chamber of which is connected to a heat regenerator and an exhaust gas cooler, and the heat recovery gas chamber of the heater is connected to the compressor outlet and the inlet of the turbine, the output of which is connected to the inlet of the compressor through the gas chamber of the waste gas cooler, which is connected through a pressure reduction device to the liquid CO₂ storage tank. At the same time, the carbon dioxide removal system is equipped with a cooler for the final cooling of high-pressure exhaust gases and a dehumidifier installed in front of a two-chamber carbon dioxide condenser or a carbon dioxide condenser-separator, and the cold stream mixer is connected through an additionally installed gas-water oxygen heater to a mixing receiver, which is connected with exhaust gas heat regenerator through gas turbine engine compressor.

EFFECT: efficient engine operation.

8 cl, 2 dwg