Method and apparatus for the automatic dynamic dosing at least of one fluid component of a mixed fluid
US4440314A · kind A · utility
Inventors
Key dates
| Filing date | Jul 13, 1981 |
| Grant date | Apr 3, 1984 |
| Priority date | — |
| Expiry date | Jul 13, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2541
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In order to increase the dosing precision it is proposed to control the flow of the main component and thereby the measured flow of the main component is used as a variable desired value, and with the control of the flow of the secondary component the control value (the actual value) of the flow of the main component is used for determining or defining the desired value of the flow of the secondary component (which latter-mentioned value is proportional to this control value); as well as to use for this purpose a geared pump (P.sub.8) for the feeding of the main component to a servo controlled member or system (the geared pump being arranged between a pressure vessel (D.sub.S) and a measuring transducer (12)), an electrical machine M.sub.8, which is operable as a motor and drives the pump (P.sub.8) for the main component, which with the electrical machine M.sub.8 which is associated with it forms a regulating element, an electronic four-quadrant controller (16) for the machine (M.sub.8) which is coordinated to the main component and two tacho-generators (T.sub.8, T.sub.10) which are coupled with respectively each one of the two electrical machines (M.sub.8, M.sub.10). The method an…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.