| 摘要 |
<p>The invention relates to flow technology and can be used in various technical fields for transmitting gases, including in the feeding of gas in gas turbines and in fuel supply systems. In an ejector consisting of a nozzle, an ejector chamber and a diffuser, an active flow is fed into the nozzle, where said flow is accelerated to a speed exceeding the speed of sound of the medium to be ejected. The active flow is released into a mixing chamber of the ejector, where said flow expands in moving through the ejector chamber and occupies the entire cross-section of the chamber, while continuing to move in the chamber and in the diffuser at a speed exceeding the speed of sound of the medium to be ejected. The medium to be ejected is drawn into the diffuser and follows the active flow, but cannot exceed its own speed of sound and, as a result, is precluded from interacting with the active flow. The active flow is fed in a pulsed manner, interrupting and resuming the feeding thereof with a certain periodicity, which is achieved by means of an active flow feed channel being continuously closed and opened using a breaker valve. The technical result of the invention consists in decreasing or, in an extreme case, totally eliminating the mutual deceleration of the flows, and also in the mixing and heat and mass transfer of the active gas and the medium to be ejected (the passive medium).</p> |
