Vapor source system based on vapor-liquid ejector supercharging combined with flash vaporization technology

A vapor source system based on vapor-liquid ejector supercharging combined with flash vaporization technology, the vapor source system comprising a vapor-liquid ejector (1), a intermediate heat exchanger (2), a flash vaporization tank (3) and a feed water pump (4), wherein each device is connected by pipeline;

• the vapor-liquid ejector is successively connected by a convergent-divergent primary nozzle (5), a suction chamber (6), a mixing chamber (7) and a diffusion chamber (8), and a high-pressure steam inlet is connected to the inlet of the primary nozzle (5), meanwhile an injection fluid inlet of the suction chamber (6) is connected to a bottom of the flash vaporization tank (3), and an outlet of the diffusion chamber (8) is connected to a cold fluid inlet of the intermediate heat exchanger (2);
• wherein, the vapor source system is driven by high-pressure motive steam, and a supersonic jet is generated at the outlet of the primary nozzle (5), then vacuum is formed in the suction chamber (6), so low-pressure water of the flash vaporization tank (3) is sucked into the vapor-liquid ejector (1), and the vapor-liquid mixing and condensation pressure increasing are completed in the mixing chamber (7), then the pressure of the mixed fluid is continued to increase in the diffusion chamber (8), and the mixed fluid is sent into the intermediate heat exchanger (2) to increase temperature to saturated or nearly saturated fluid, then sent into the flash vaporization tank (3) to flash, and low-pressure saturated steam is generated;
• the low-pressure saturated water which is not flashed is collected at the bottom of the flash vaporization tank (3), and is connected with the injection inlet of the vapor-liquid ejector (1) via the extraction pipe at the bottom of the flash vaporization tank (3), so as to realize a circulating supercharging flash vaporization;
• the feed water pump (4) sends the low-pressure water to the bottom of the flash vaporization tank (3) to ensure continuous and stable operation of the vapor source system.