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Gas-state fuel cyclone integrated igniter

A gaseous fuel and swirler technology, applied in the directions of combustion ignition, incandescent ignition, combustion method, etc., can solve the problems of affecting the effective length of ignition, increasing the manufacturing cost and design difficulty, and decreasing the success rate of ignition, etc.

Inactive Publication Date: 2013-03-20
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the plasma igniter is applied to the flow field of gaseous fuel and air, when the velocity of air and fuel in the flow field is high, and the rigidity of the arc of the plasma igniter is not enough, it is easy to cause the inclination of the arc, thus affecting the effective length of ignition , the ignition success rate decreases
Moreover, in the gaseous fuel combustion chamber, in order to ensure ignition reliability, it is generally necessary to set duty nozzles, which increases the manufacturing cost and design difficulty

Method used

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  • Gas-state fuel cyclone integrated igniter

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Embodiment Construction

[0016] The present invention will be described in more detail below with examples in conjunction with the accompanying drawings.

[0017] The gaseous fuel swirling integrated igniter of the present invention consists of a power connector 1, a ground electrode 6, a ceramic insulating medium 2, an inner electrode 5, a compression cover 7, a gasket 8, a compression ring 9, a gaseous fuel inlet 13, The gas fuel swirler 12, the fixed hollow nut 11, and the casing 10 of the swirler assembly are composed.

[0018] The plasma igniter is composed of the inner electrode 5 located in the center, the ground electrode 6 located outside the inner electrode, the ceramic insulating medium 2 between the inner electrode and the ground electrode, and the power connector 1 . A supporting ring is arranged between the ground electrode and the ceramic insulating medium, a certain gap is formed between the ground electrode and the ceramic insulating medium, and a graphite sealing ring 3 is arranged a...

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Abstract

The invention provides a gas-state fuel cyclone integrated igniter, comprising a plasma igniter which is mainly formed by an inner electrode located at the center, a grounding electrode located outside the inner electrode, an insulating medium between the inner electrode and the grounding electrode, and a power supply connector, and further comprising a gas-state fuel cyclone device assembly which is mainly formed by a cyclone device assembly shell and cyclone devices mounted inside the cyclone device assembly shell, wherein the cyclone device assembly shell is annular; a plurality of the cyclone devices are uniformly distributed in the annular cyclone device assembly shell; the annular cyclone device assembly shell is provide with a gas-state fuel gas inlet; the plasma igniter is located in the annular cyclone device assembly shell; the grounding electrode is provided with a plurality of tangential gas inlet small holes; and the cyclone device assembly shell and the grounding electrode are integrally connected through a pressing cover. The gas-state fuel cyclone integrated igniter is applied to the field of heat energy and power engineering, can realize the reliability of ignition, and guarantees that a combustion speed reaches to a stable state.

Description

technical field [0001] The invention relates to a combustion chamber swirl gas supply and air plasma ignition device. Background technique [0002] The air plasma igniter is a new type of high-efficiency ignition equipment for igniting the combustion chamber of a gas turbine. It uses an arc to excite high-temperature air plasma to ignite the fuel. The advantage is that the success rate of ignition and the stability of combustion can be improved. At present, the igniter and gas fuel supply equipment in the combustion chamber adopt a cross distribution, and the axis crossing angle is 75-90°. The igniter and the gas fuel swirler are respectively arranged above the head and the center of the combustion chamber. Since the plasma igniter is applied to the flow field of gaseous fuel and air, when the velocity of air and fuel in the flow field is high, and the rigidity of the arc of the plasma igniter is not enough, it is easy to cause the inclination of the arc, thus affecting the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23Q7/00F23Q7/22
Inventor 刘倩郑洪涛李雅军
Owner HARBIN ENG UNIV
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