| 摘要 |
<p>737,843. Controlling distribution of liquids. ESSO RESEARCH & ENGINEERING CO., [formerly STANDARD OIL DEVELOPMENT CO.]. Nov. 25, 1953 [Dec. 23, 1952], No. 32766/53. Class 21. [Also in Group XXVIII] In a pipe line 1 for conveying a series of different fluids separated from each other by a "go-devil" comprising cup-shaped, rubber discs Fig. 2 (not shown), mounted on a shaft, there is provided signalling means responsive to substantial variations in the pressure difference between two taps 2, 3 in the pipe line, and to indicate the passage of the "go-devil" between the taps so that an operator or an automatic mechanism manipulates valves to segregate one fluid from the. next by piping the fluids into appropriate branch lines leading to storage tanks. The taps are separated from each other by a distance equal to at least twice the length of the "go-devil". As shown, the pressure difference between the taps 2, 3 is transmitted hydraulically through connections 12, 13 to a mechanism 14 comprising an enclosed diaphragm 16 by which an electric control switch 15 is operated to energize a solenoid 22 and close contacts 23, 24 thereby setting off an alarm 30, e.g. an electric horn or signal light, the circuit being automatically or manually broken when required by a reset switch 25; alternatively, a battery, electric horn and a control switch in series may be used, the switch being adapted to complete the circuit upon impulse from the mechanism 14. Also, the device 30 may comprise a switching mechanism which automatically operates valves in the pipeline to pass consecutive batches of fluid into appropriate branch lines or eject the "go-devil" from the system, and the mechanism 14 may operate directly to open a valve in a compressed air line so as to blow a whistle upon passage of the "go-devil" between the taps 2, 3.</p> |
