FUEL OIL BLENDING DEVICE

PURPOSE:To make an automatic supervising of oil quality and provide a desired reference value by a method wherein a flow rate control valve at a pump pressure feeding side is controlled in response to a metal corroding a gas turbine, and signals sensing a temperature and a viscosity and a blending ratio of light oil and crude oil can be determined. CONSTITUTION:Each of the lines for light oil and crude oil before their blending is provided with sensor devices 6A and 6B for sensing metals such as Na+K or the like corroding a gas turbine, an oil temperature and a viscosity. The light oil receives a signal from the sensor device 6a, its flow rate is controlled by a flow rate control valve 10A and then the light oil is passed through a piping 11A. The crude oil receives a signal from the sensor device 6, its flow rate is controlled by a flow rate control valve 10B and then the crude oil is passed through a piping 11B. The control device 7 stores a combination of light oil and crude oil by estimating a range of variation of components of Na and K in the light oil and the crude oil and storing it in such a way as it becomes a restriction value for the gas turbine. With this arrangement, the flow rate control valves 10A and 10B are controlled by the control device 7 and the light oil and the crude oil are blended in the piping 12.