Gas-liquid mixing control system and control method for gas-liquid mixing

A gas-liquid mixing control system, comprising:

• a liquid supply unit for providing a liquid;
• a liquid pressure regulating valve which communicates with the liquid supply unit for keeping the liquid at a first constant pressure and a first flow;
• a gas supply unit for providing a gas;
• a gas pressure regulating valve which communicates with the gas supply unit for keeping the gas at a second constant pressure and a second flow, wherein the second constant pressure of the gas is higher than the first constant pressure of the liquid;
• a mixing tank communicating with the liquid pressure regulating valve and the gas pressure regulating valve, wherein the liquid pressure regulating valve is installed between the liquid supply unit and the mixing tank, and the gas pressure regulating valve is installed between the gas supply unit and the mixing tank;
• the liquid pressure regulating valve inputs the liquid to the mixing tank with the first constant pressure and the first flow, and the gas pressure regulating valve inputs the gas to the mixing tank with the second constant pressure and the second flow, wherein the liquid and the gas are mixed in the mixing tank to form a mixed fluid;
• an output pipe which has a first end communicating with the mixing tank, wherein the pressure of the mixed fluid in the mixing tank and the output pipe are the same;
• the output pipe has a second end communicating with at least one machine, the mixed fluid is output from the mixing tank to the at least one machine through the output pipe;
• the mixed fluid in the first end is provided with a third flow, and the mixed fluid in the second end is provided with a fourth flow;
• and
• a non-electric control flow regulator which communicates with the output pipe, wherein the mixed fluid passing through the non-electric control flow regulator is provided with a fifth flow;
• wherein the first flow is greater than or equal to at least one of the fourth flow and the fifth flow.