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High-energy plasma igniter of gas turbine

A plasma point and gas turbine technology, which is applied to gas turbine devices, machines/engines, mechanical equipment, etc., can solve problems such as life reduction, ignition energy limitation, and electrode ablation intensification, so as to improve cooling effect, prolong electrode life, and fully cool Effect

Inactive Publication Date: 2009-06-24
HARBIN ENG UNIV
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  • Abstract
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Problems solved by technology

But there is a contradictory problem: if the ignition energy is required to be large, the plasma energy will be increased, and then the electrode ablation will be intensified, and the service life will be reduced; and if the electrode service life is to be guaranteed, the ignition energy will be limited

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  • High-energy plasma igniter of gas turbine
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  • High-energy plasma igniter of gas turbine

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Embodiment Construction

[0018] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0019] figure 1 It is the connection schematic diagram of the gas turbine high-energy plasma igniter of the present invention. The gas turbine high-energy plasma igniter of the present invention mainly includes: an ignition exciter 1, a matching plasma generator 2 and a high-voltage ignition cable. The number of ignition sources can be determined according to factors such as gas turbine power and fuel. The number of ignition sources is the number of plasma generators 2 . According to the number of 2 plasma generators, the ignition exciter 1 module can be expanded. For example, if one ignition exciter 1 is designed with 2 outputs, if 4 ignition sources are required, two ignition exciters 1 and 4 sets of plasma generators are equipped. 2 and high voltage ignition cable.

[0020] figure 2 It is a schematic diagram of the internal structure module of the ignitio...

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Abstract

The invention provides a gas turbine high-energy plasma igniter. The plasma igniter comprises an ignition exciter unit and a matched plasma generator, wherein, the ignition exciter unit comprises a control relay, a transformation isolating circuit, an oscillating impulse circuit, an arc maintenance follow current module and a high voltage transformer; the plasma generator comprises a fitting seat, a centre shaft, an insulator, a cathode and an anode; in the invention, ignition efficiency is improved given the set plasma ignition energy and the electrode is fully cooled, thus prolonging the service life thereof. On the contrary, as the cooling effect is improved, plasma ignition energy can be increased, so that low grade fuel such as heavy oil and the like can be ignited under even worse conditions. Meanwhile, the position of a screw hole can be just adjusted to replace the previous igniter, and judging from the situation, the plasma igniter of the invention has numerous advantages and is more functional.

Description

(1) Technical field [0001] The invention relates to a high-energy ignition device in the field of thermal energy and power, in particular to a high-energy plasma igniter suitable for a gas turbine. (2) Background technology [0002] Nowadays, gas turbines have been widely used and developed in many fields such as aviation, ships, and power generation due to their advantages such as high power, small weight and size, and high efficiency. During the start-up process of a gas turbine, ignition is critical. The success rate of ignition will be directly related to the safe and reliable operation of the whole device. [0003] At present, the commonly used ignition methods include electric spark ignition and semiconductor surface discharge ignition. The electric spark ignition uses the spark discharge or arc discharge between the two electrodes of the combustion chamber to burn the mixture. This method generally has lower ignition energy and longer ignition delay. Semiconductor ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C7/266
Inventor 谭智勇杨家龙郑洪涛陈明敏
Owner HARBIN ENG UNIV
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