A dual-stage co-rotating head unit for dual-fuel gas turbines
A gas turbine and dual-fuel technology, applied in combustion chambers, combustion methods, combustion equipment, etc., can solve the problems of difficult control of thermal NOx, strict emission requirements, high temperature in the main combustion zone, etc., achieve good ignition performance and ensure flame Effect of stable and low NOx emission
Active Publication Date: 2021-11-16
成都中科翼能科技有限公司
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Problems solved by technology
However, the current emission requirements are becoming increasingly stringent, especially the high standards for gaseous fuel combustion. Due to the high temperature of the main combustion zone and the difficulty in controlling thermal NOx, this combustion method can no longer meet the demand.
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Embodiment
[0044] Such as Figure 1-12As shown, this embodiment provides a dual-stage co-rotating head device for a dual-fuel gas turbine, including a dual-stage axial co-rotating swirler 1, a fuel nozzle 2 and a premixing section 3, and the fuel nozzle 2 includes a centrifugal nozzle 22 and a spray rod 21; the front end of the premixing section 3 is connected to the outlet end of the two-stage axial co-rotating cyclone 1, and is used to pass through the two-stage axial co-rotating cyclone 1 to the premixing section 3, input air and gaseous primary fuel; the inlet end of the spray rod 21 is set outside the two-stage axial co-rotating cyclone 1, and the outlet pipe of the spray rod 21 runs through the two-stage axial co-rotating cyclone 1 And extend to the side near the rear end of the premixing section 3, for inputting gaseous duty grade fuel to the rear end of the premixing section 3 through the spray rod 21, and inputting liquid main grade fuel into the premixing section 3 through the ...
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The invention discloses a dual-stage co-rotating head device for a dual-fuel gas turbine, comprising a dual-stage axial co-rotating swirler, a fuel nozzle and a premixing section, and the fuel nozzle includes a centrifugal nozzle and a spray rod; The front end of the premixing section is connected to the gas outlet end of the two-stage axial co-rotating cyclone; the inlet end of the spray bar is set outside the two-stage axial co-rotating cyclone, and the air outlet pipe of the spray bar runs through the two-stage The axial co-rotating swirler extends to the side near the rear end of the premixing section; the centrifugal nozzle is arranged at the air outlet end of the spray bar, and is used to input liquid duty-grade fuel to the rear end of the premixing section through the centrifugal nozzle. The invention adopts the innovative structural form of multi-channel and multi-structure fuel supply to realize good fuel concentration distribution; realize high-efficiency work in all states, and realize point-off, anti-backfire, and anti-coking ablation while ensuring high-efficiency and low-emission combustion in the combustion chamber , Anti-carbon deposition and other performances.
Description
technical field [0001] The invention belongs to the technical field of gas turbines, and in particular relates to a double-stage co-rotating head device for a dual-fuel gas turbine. Background technique [0002] A gas turbine combustor that can burn both gaseous and liquid fuels is a dual-fuel combustor. Because it can take into account the combustion of two fuels, it has a wider application field than single-fuel gas turbines. [0003] Dual-fuel combustors need to perform well with both liquid and gaseous fuels burning. The combustor head device includes swirler and fuel nozzle. Due to the need to take into account both liquid and gaseous fuels, the requirements for it are as follows: [0004] 1. When using liquid fuel, atomization and evaporation need to be considered, and the nozzle needs to have good atomization performance to ensure ignition and combustion efficiency; [0005] 2. When using gaseous fuel, it is necessary to consider the premixing effect to reduce emis...
Claims
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IPC IPC(8): F23R3/28F23R3/38
CPCF23R3/286F23R3/38
Inventor 范珍涔刘宝琪陈柳君代茂林颜腾冲王龙杨治王梁丞赵汝伟
Owner 成都中科翼能科技有限公司