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An anti-backfire fuel flash swirl integrated nozzle

A swirl nozzle and anti-backfire technology, which can be used in combustion chambers, combustion methods, combustion equipment, etc., can solve the problems of underutilization and increased pollutant emissions, reduce production, meet low emissions, and suppress backflow. effect of fire

Active Publication Date: 2021-03-30
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, problems such as tempering caused by fuel flashing and the increase of the high temperature zone at the head of the flame tube not only did not make full use of the advantages brought about by the substantial increase in fuel enthalpy, but increased pollutant emissions

Method used

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  • An anti-backfire fuel flash swirl integrated nozzle
  • An anti-backfire fuel flash swirl integrated nozzle
  • An anti-backfire fuel flash swirl integrated nozzle

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Embodiment Construction

[0015]The present invention will be further described in further detail below with reference to the accompanying drawings.

[0016]Such asFigure 1-2As shown, one anti-backflake vapor flow integrated nozzle, including: a pressure swirl nozzle 1 with a rough projection, a primary swirler 2 with contraction-expanded Wenta tube, a second stage of rear steps The swirl 3, the blow hole 4. The four components are arranged in a central annular, and the inner to the outside is sequentially azuriferous swirl nozzle 1 with a rough projection, a primary swirler 2 with contraction-expanded Withe, a secondary swirling of the rear stepped The machine 3, the blow hole 4, the center line of each component. The central fuel nozzle is a pressure swirling nozzle, a spray cone angle 90 °, a rough projection 1-1 and a swirl blades 1-2 in the fuel flow channel, and since the combustion chamber is much lower than the saturated steam corresponding to the fuel temperature. Pressure, overcritical fuel passes thr...

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Abstract

The invention provides an anti-backfire fuel oil flash evaporation and swirling integrated nozzle, which comprises a pressure swirl nozzle, a first-stage swirler and a second-stage swirler from insideto outside, wherein the second-stage swirler comprises an outer wall, a second-stage hub and second-stage axial swirl blades arranged between the inner surface of the outer wall and the outer surfaceof the second-stage hub; a rear step is arranged at the end of the inner surface of the outer wall; the first-stage swirler comprises a first-stage hub and first-stage axial swirl blades arranged between the outer surface of the first-stage hub and the inner surface of the second-stage hub; a contraction section and an expansion section are arranged on the inner surface of the second-stage hub toform a contraction-expansion Venturi tube; the pressure swirl nozzle is connected with the inner wall of the first-stage hub; and the outlet position of the pressure swirl nozzle corresponds to the throat portion of the contraction-expansion Venturi tube. The nozzle not only can avoid backfire, but also can improve the oil-gas mixing level and reduce the pollutant emission.

Description

Technical field[0001]The present invention relates to a non-return fuel flying fluid flow integrated nozzle, belonging to a gas turbine low-contaminated combustion chamber application, and is applied to a gas turbine combustion chamber head of a supercritical fuel.Background technique[0002]The current gas turbine is moving towards high temperature rise, high push weight ratio and low pollution direction, and high temperature rise, high weight loss increases, and how to reduce pollutant emissions, it is urgent to solve in liquid fuel combustion technology. problem. The fuel is a very potential cooling medium. After absorbing most of the whole machine heat load, it will inevitably reach the supercritical state, and the fuel injection combustion chamber is rapidly transformed into a subcritical state in the supercritical state, and some fuel components occur. The phase change thus produces flashes. However, due to the return of fire, the flame tube head high temperature zone increases,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23R3/38
CPCF23R3/38
Inventor 刘潇陆景贺郑洪涛刘恩惠游滨川张志浩杨家龙胡传龙
Owner HARBIN ENG UNIV
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