Premixing-stage fuel and air reinforced mixing structure and shaft type cyclone

• Main Authors: ZHAO NINGBO, ZHENG HONGTAO, YANG REN, SUN JIHAO, YANG HONGLEI, ZHU QIULE
• Format: Patent
• Language: Chinese; English
• Published: 23.06.2023
• Subjects: BLASTING; COMBUSTION APPARATUS; COMBUSTION PROCESSES; GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS; HEATING; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

The invention discloses a premixing-stage fuel and air reinforced mixing structure and a shaft type cyclone, relates to the field of combustion chambers of gas turbines, and aims to solve the problem that discharged pollutants are increased due to the fact that the mixing effect of an existing cyclone on fuel and air is not ideal. In the premixing-stage fuel and air reinforced mixing structure, the multiple fuel spraying holes are formed in the two sides of the rotational flow blades correspondingly, the multiple protruding structures correspond to the multiple fuel spraying holes correspondingly, and the protruding structures are located on the upstream portions of the fuel spraying holes. In the shaft type cyclone, the first-stage hub is of a hollow structure; the center on-duty-stage bluff body, the first-stage hub and the second-stage hub are sequentially and coaxially arranged from inside to outside, and the set of rotational flow blades are evenly arranged between the center on-duty-stage bluff body and