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B3) Refueling of single normal tanks without flowback line
This option is suitable for filling single "normal" tanks.
Tanks of the same size connected in parallel can also be conditionally filled (if they fill up quickly).
Flow
Sensor
Pump
Fuel detector
Fuel detector
Fuelstation
to engine
/zur Turbine
Model
normal-tank
Flowback line / Rücklauf
Fuel supply line
Kraftstoffversorgung
Fill-line
/Befüll-Leitung
Fuel container
/Kraftstoffreservoir
tiny-overflow catch tank
Kleiner Überlauftank
ca. 30-70ml
tank overflow
Tankentlüftung/Überlauf
Optional
In normal tanks (not bag tanks) the fuel flow will also drop slightly as fuel flows into the tank overflow.
However, if several such tanks are connected in series, this circumstance may occur several times until
all individual tanks are full. Certain "tank full" detection is not guaranteed in these cases on the flow
signal alone and the flowback line should be used! See option A).
However, the flow rate decrease can be used as a "tank full" signal for a tank system consisting of only a
single "normal" tank. In this case, you can dispense with the connection of the flowback line. At the end
of refueling, a small volume of fuel will escape from the overflow of the main tank (about 30ml). This
overflow of fuel into the environment can be prevented by optionally interposing a small overflow tank
before the actual overflow. This "mini-tank" then collects small amounts of fuel that could otherwise
flow into the environment until the over-pressure trip triggers.
Advantage: A single refueling line is enough, and no fuel gets into the environment.
Disadvantage: Not suitable for series connection of several tanks.
