| 摘要 |
<p>The present invention relates to a storage and dispensing device for injecting an additive into a pipe (15) through which a liquid having a variable flow rate flows, comprising: a tank for containing said additive, which is to be pressurised at a pressurisation pressure by means of a pressurisation fluid; and an additive duct connected to said tank as well as to said pipe, the device being characterised in that it comprises: a pressure-reducing valve inserted into said additive duct; a differential pressure regulator shaped so as to modify the set pressure of said pressure-reducing valve according to the difference ? between a reference pressure and a control pressure, the reference pressure being measured either in the additive channel upstream from the pressure-reducing valve, or in the additive channel downstream from the pressure-reducing valve and upstream from a point at which the additive duct is connected to said pipe, the control pressure being measured, in said pipe, upstream from said connection point.</p> |
