Patent ID: 9670765
Date: 2017-06-06
CPC Classifications: E21B,F04F

Claim:
1. A multiphase ejector comprising: at least one hollow structure delimiting a housing space, said hollow structure including a first inlet opening, connectable to a first feeding source of a first fluid having a first pressure value, a second inlet opening, connectable to a second feeding source of a second fluid, having a second pressure value lower than the first pressure value of said first fluid, and at least one outlet opening; at least one bush situated inside said housing space, said bush being longitudinally crossed by a transit channel having a first opening in fluid communication with said first inlet opening of said hollow structure and a second opening in fluid communication with said second inlet opening and said outlet opening of said hollow structure; at least one mixing member operatively positioned inside said housing space in correspondence with said outlet opening for mixing said first and second fluid coming from said first and second inlet opening respectively, said mixing member delimiting at least one respective flow channel for passage of said fluids, said flow channel having a first opening in fluid communication with said second opening of said transit channel of said bush and said second inlet opening of said hollow structure, and a second opening in fluid communication with said outlet opening of said hollow structure, said at least one mixing member comprising: a first body substantially cylindrical, in which the first opening of the flow channel is defined; a second body including a stem at least partially inserted in said first body and a cylindrical portion integral with said stem, said cylindrical portion of said second body defining said second opening of said flow channel, said flow channel of said mixing member being at least partially defined by said first body, and at least partially defined by said second body; a length of said flow channel of said mixing member being regulated between a first condition, corresponding to a minimum length, and a second condition, corresponding to a maximum length; said first and second body of said mixing member being relatively moved with respect to each other between a first position of maximum insertion of said stem of said second body inside said first body, corresponding to a first regulation condition of the length of said flow channel, and a second position of minimum insertion of said stem of said second body inside said first body, corresponding to a second regulation condition of the length of said flow channel; at least one restricting pin operatively associated with the bush for adjusting a passage area of said first fluid in correspondence with said second opening of said transit channel, said restricting pin being movable between a first position, in which the passage area defined between said restricting pin and said second opening of said transit channel of said bush has a maximum amplitude, and a second position, said second opening of said transit channel of said bush being closed by said restricting pin; driving means operatively associated with said hollow structure for moving, from outside, said restricting pin between the first and second position; and auxiliary driving means operatively associated with said mixing member for relatively moving, from outside, said first and second body between the first position and the second position.