Throttling air supply system with ejectors

The utility model relates to a throttling air supply system with ejectors. The throttling air supply system comprises an air supply compressor, a condenser, a first ejector, a flash vaporization device or an economizer, a second ejector, a gas-liquid separator and an evaporator that form a closed circulation loop; the first ejector is connected between the outlet of the condenser and the inlet of the flash vaporization device or the inlet of the economizer of an auxiliary loop in series, and the ejecting inlet of the first ejector is connected with the gas outlet of the gas-liquid separator; a second ejector is connected between the liquid outlet of the flash vaporization device or the economizer and the inlet of the gas-liquid separator in series, and the ejecting inlet of the second ejector is connected with the outlet of the evaporator; the outlet of the compressor is connected with the inlet of the condenser; and the gas outlet of the gas-liquid separator is connected with the gas suction port of the compressor. The throttling air supply system adopts the parts with simple structures, low cost and no movement, and the ejectors with good adaptability to the working condition of two-phase flow replaces a throttling device, thereby being beneficial for overall improving the performance of the system.