| 摘要 |
<p>A jet level sensor used for controlling the liquid level in a tank such as a fuel tank includes a nozzle (162) and receiver (166) supported within a bracket (150) so that the nozzle and receiver and the associated conduits are freely rotatable with respect to the bracket. The outlet diameter of the nozzle is greater than the inlet diameter of the receiver so that the receiver orifice is fully engulfed by a jet liquid stream when the liquid level in the tank is below the sensor. A manifold (168) is coupled to the receiver for providing a plurality of output pressure signals indicative of the liquid level within the tank via conduits (28, 88). The sensor is connected to a system which includes a main inlet valve and redundant relay valves which are fluid pressure responsive and which shut off responsive to the absence of a pressure signal from the sensor when the liquid within the tank reaches a predetermined desired level. Also provided are shut-off valves connected to be responsive to a tank and nozzle failure over-pressure condition at the inlet or within the tank. <IMAGE></p> |
