What are the advantages that the main regulator of gas boiler is proportional regulator?

The main regulator of gas boiler is proportional regulator, and its proportional band is unequal ratio of turbine; The auxiliary regulator is a proportional-integral regulator; The active power of the generator is a feedforward signal, which is directly sent to the auxiliary regulator to complete the power frequency control at the same time as the main regulator; The primary pressure signal is a feedback signal, which is used to quickly eliminate the spontaneous disturbance of steam quantity of steam turbine.

When connected to the grid, each turbo-generator unit relies on its own unequal ratio to maintain the frequency and load of the grid. According to the similarity theory, the author thinks that the combustion control system of parallel running boilers can also adopt a control scheme similar to that of steam turbine automatic control system, that is, the improved automatic control system of parallel running boilers with mother tubes proposed by the author. The boiler structure is designed according to atmospheric pressure. The top of the gas-fired boiler is equipped with a large air hole, and the boiler works at normal pressure, away from the explosion danger. The boiler body adopts computer optimization simulation design, which comprehensively optimizes the size of the boiler and has a harmonious and beautiful shape. CLHS vertical boiler adopts the combustion mode of burner down, and the fuel burns in the furnace liner with slight positive pressure, and a baffle is inserted in the flue. Hefei gas-fired boiler slows down the emission speed of flue gas, and Shaoxing gas-fired boiler strengthens heat exchange to ensure that the heat generated by fuel combustion heats water to the maximum extent, thus improving the thermal efficiency of the boiler. CWNS horizontal boiler adopts full wet back three-return structure, with long flue gas flow, reduced exhaust temperature and full corrugated furnace liner, which makes the flame strongly disturbed, strongly improves the heat transfer coefficient, and effectively prevents the equipment life from being shortened due to metal thermal expansion and cold contraction; The gap between the large-diameter flue pipe and the large-hole bridge makes the boiler scale coating thin and easy to clean.