| 摘要 |
<p>1,073,886. Mixing liquids in flow. COMPAGNIE GENERALE D'AUTOMATISME and COMPAGNIE D'APPLICATIONS ET RECHERCHES ATOMIQUES. Jan. 29, 1965 [Jan. 31, 1964; Dec. 23, 1964], No. 4156/65. Heading B1C. [Also in Divisions G1 and G4] A valve 13 is adjusted automatically to control the amount of a liquid additive mixed with a liquid flowing in a pipe 11. One of tubes 1, 2 is filled with the additive from tank 30 while the other tube is being emptied through valves 8, 13. Tube 2 has a radioactive float 12 and a double ionization chamber detector 17 which is suspended on a chain 14. As a tube is emptied, the detector 17 controls a servo system 15 so that the detector 17 is moved to remain level with the float 12. A photo-electrically sensed perforated disc 31 is coupled to the servo system 15 and produces pulses which are proportional in number to the amount of additive dispensed. A device 23 produces pulses which are proportional in number to the amount of liquid flowing in pipe 11, and this number is converted at 22 in proportion to the desired ratio of additive to main liquid, a comparator 21 controlling valve 13 in accordance with any difference between the numbers of pulses supplied thereto. ,</p> |
