Liquid purification or separation – With alarm – indicator – register – recorder – signal or...
Patent
1990-10-18
1992-08-18
Dawson, Robert A.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
73 6143, 137 2, 137565, 208187, 210 961, 210138, 417 12, B01D 1712, C10G 3308
Patent
active
051396530
ABSTRACT:
An automatic drainage system is described for draining one of two non-miscible liquids which are of different densities from at least one tank (1) via a drain valve (3,10,60) including a system for monitoring the relative proportions of the non-miscible liquids in the liquid flow along the drain line (2). According to the invention the monitoring system includes a recirculating path (2A, 26 FIGS. 1 to 5: 2A FIG. 6) for liquid from the drain line (2) back to the tank (1), a pump (5) in the recirculating path for moving liquid around the path, the pump being arranged to maintain a substantially constant liquid flow around the path substantially independently of the head of liquid in the tank, a detector (7) in the path having at least one sensing head (8) for sensing the relative proportions of the two non-misible liquids flowing in said path, and control means (9) for controlling the system in dependence upon said relative proportions. In operation, the control means (9) initiates operation of the pump (5) to circulate the liquid in the path for a preset period to purge the recirculating path, after which the pump is switched off unless the detector head(s) 8 sense an unacceptable proportion of said one liquid whereupon the control means operates to open the drain valve (10, FIGS. 1 to 5; 60 FIG. 6) and drain said one liquid until said proportion reaches an acceptable level.
REFERENCES:
patent: 2736201 (1956-02-01), Ohlsen et al.
patent: 2773556 (1956-12-01), Meyers et al.
patent: 2896657 (1959-07-01), Uhll et al.
patent: 4065389 (1977-12-01), McGrew
patent: 4153553 (1979-05-01), Davis
patent: 4647371 (1987-03-01), Schmitt et al.
patent: 4804464 (1989-02-01), Schevey
patent: 4836017 (1989-06-01), Bozek
patent: 5070725 (1991-12-01), Cox et al.
Ludlam Richard
Palmer William B.
Dawson Robert A.
Drodge Joseph
Ludlam Sysco Ltd.
LandOfFree
System for draining water from oil storage tanks with periodic m does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System for draining water from oil storage tanks with periodic m, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for draining water from oil storage tanks with periodic m will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1246301