| 摘要 |
PURPOSE:To maintain always carburettor output pressure at a constant in a controller for an allotting load to each carburettor when the output pressures of a plurality of the carburettors for liquefied gas are controlled, by controlling load allotment through a setting unit for pressure controlling rate. CONSTITUTION:In a carburettor device wherein liquefied gas through each pressure regulator valve 1 is gasified in a carburettor 2 and then delivered to a consuming area 3, the pressure regulator valves 1 are controlled as follows: A pressure controlling rate setting unit 9 establishes a pressure controlling rate within an allowable fluctuation range of the outlet pressure of each carburettor 2, receiving a signal from an output flow rate transmitter 8 for the carburettor 2, and then a set value of the output pressure of the carburettor 2 is synthesized by applying load allotment for each carburettor to an adder 10 from a bias setting unit 7. Add-subtract operation is performed to the set value and the output of a carburettor output pressure transmitter 4 on an add-subtract operating unit 5 the output of which is used to control the pressure regulator 1 through a proportional integrator 6. |
