Adjustably positionable supersonic nozzle means
AssigneeKoppers Company, Inc.
InventorA. Leslie Miller
Life of this patent
Estimating the term…
Abstract
Nozzle means are disclosed that are particularly suited for use in combination with tuyeres of metallurgical reducing or refining vessels. The nozzle means is axially positionable within the tuyere to maintain a supersonic jet as the tuyere is consumed. Both axially divergent-convergent and convergent-divergent nozzle means are disclosed. Also disclosed is a combination of nozzle means to effect rapid shut-off of the tuyere by positioning a conforming convergent first portion into the convergent second portion of the nozzle means.
Claims1
Apparatus for use in a tuyere or like tubular member to impart supersonic velocity to a fluid passing therethrough, said apparatus comprising:
- nozzle means including a central member axially positionable within a tubular member, said central member having a convergent portion, a divergent portion, and a neck portion between said divergent and convergent portions to define an annular passageway between said neck portion and tubular member having a restricted flow area to said fluid;
- a venturi member having an axially convergent portion, an axially divergent portion, and a neck portion positioned between said convergent and divergent portions of said venturi member;
- said central member having its convergent portion of a shape substantially conforming to the convergent portion of said venturi member and being axially positionable with respect to said convergent portion of said venturi member;
- a first adjusting means operably connected to said venturi member and central member for axially positioning said members along said tubular member;
- and
- a second adjusting means operably connected to said central member for positioning said central member relative to said venturi member.
Dependencies are inferred from the claim text.