发明名称 |
Gas turbine combustor including a diffusion nozzle assembly with a double cylindrical structure |
摘要 |
A gas turbine combustor comprises a cylindrical outer casing having one end closed by a header plate. A combustor liner provided with an inner combustion chamber which is divided into a first-stage combustion region on a side of the header plate and a second-stage combustion region formed on a downstream side of the first-stage combustion region. A first-stage fuel supply unit mounted to the header plate for injecting a first-stage fuel to the first-stage combustion region and a second-stage fuel supply unit mounted to the header plate for injecting a second-stage fuel previously mixed in a lean fuel state. The first-stage fuel supply unit includes a first-stage fuel nozzle assembly, which supplies the first-stage fuel, formed by combining a diffusion combustion nozzle and a pre-mixture combustion nozzle. The pre-mixture combustion nozzle has, at an intermediate portion thereof, a pre-mixing portion for preliminarily mixing the first-stage fuel with an air, and the pre-mixing portion having a diameter in a downstream portion thereof smaller than that of an upstream portion thereof so as to form a pre-mixed flow into a contraction flow. The pre-mixing fuel nozzle of the first stage fuel nozzle assembly is disposed so as to surround the diffusion combustion nozzle disposed in a central portion thereof.
|
申请公布号 |
US5450725(A) |
申请公布日期 |
1995.09.19 |
申请号 |
US19940266591 |
申请日期 |
1994.06.28 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
TAKAHARA, TAKESHI;KOBAYASHI, TADASHI;ITOH, MASAO |
分类号 |
F23R3/32;F23R3/28;F23R3/34;(IPC1-7):F23R3/30 |
主分类号 |
F23R3/32 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|