公开(公告)号：JPH11159757A

公开(公告)日：1999-06-15

申请号：JP26027598

申请日：1998-09-14

Applicant: ABB RESEARCH LTD

Inventor： BUECHI FRANZ ,  HOFERER UWE ,  JANSOHN PETER DR ,  STEINBACH CHRISTIAN DR

IPC: F23R3/28 ,  F23D11/26 ,  F23D11/38 ,  F23L7/00

Abstract: PROBLEM TO BE SOLVED: To provide a composition type pressure spraying nozzle for a gas turbine to improve suitability of spray characteristics of liquid to each load condition and realize excellent premixture throughout a total load range. SOLUTION: This composition type pressure spraying nozzle comprises a nozzle body 1 having at least two different feed passages 7 and 12 for at least one kind of liquid to be sprayed. Besides, a first feed passage 7 is partially surrounded with a second feed passage 12 and communicates in a spot situated downstream with an outer chamber 5 through one injection orifice 11 and a second feed passage 12 is also connected to an outer chamber 5. In a composition type pressure spraying nozzle for a so formed type gas turbine burner, the second feed passage 12 is provided with at least two injection orifices 13 communicating with the outer chamber 5.