Alternating-current plasma gun and its fire-lighting device

A plasma gun and alternating current technology, applied in the field of electric power, can solve the problems of unmanned application of an alternating current plasma ignition system, limited coal types, and high construction cost, and achieve the effects of ensuring service life, saving operating costs, and ensuring stability.

CN100591189CActive Publication Date: 2010-02-17北京光耀环境科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2010-02-17

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Abstract

The invention provides an AC plasma gun as well as relevant ignition apparatus. The AC plasma gun comprises a first tubular electrode, a second tubular electrode, an insulating collar and an intake collar; wherein, one end of the first tubular electrode is sealed; the first tubular electrode is connected with a phase line in a power source for the high-frequency arc striking apparatus; outside ofthe first tubular electrode is provided with a magnetic control coil; the second tubular electrode is linked to the zero line on the power source; the output end of the second tubular electrode is composed of a nozzle; the insulating collar is linked to the first tubular electrode and the second tubular electrode, so that the two electrodes can be insulated against each other; the intake collar isarranged on the first tubular electrode or the second tubular electrode or the insulating collar; the intake collar is composed of an intake hole that is opened in the tangent direction. The ignitionapparatus comprises a plurality of plasma guns. The AC plasma gun as well as the relevant ignition apparatus needs no rectification power source, but has the advantages of high power, long life and perfect stability and so on.
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Description

Technical field

[0001] The invention relates to an AC plasma gun directly powered by an AC power supply for ignition of a coal-fired boiler, and an oil-free ignition device formed by the AC plasma gun, belonging to the technical field of electric power. Background technique

[0002] Petroleum is the foundation of the development of the national economy and occupies an important strategic position in my country’s energy composition. With the rapid development of my country’s national economy, the demand for oil has increased sharply, making about 40% of my country’s oil consumption dependent on imports. Security issues have attracted great attention from the country, and saving oil has become one of the key tasks of my country's energy policy.

[0003] The electric power industry is a big oil consumer, and a large part of it is used for the start and stop of thermal power plant units and low-load stable combustion. Therefore, fuel-saving technology is used to start and stop boiler un...

Examples

Embodiment Construction

[0032] The present invention will be further described below with reference to the drawings and embodiments.

[0033] figure 1 It is a structural diagram of the AC plasma gun of the present invention. As shown in the figure, the AC plasma gun includes two tubular electrodes, an insulating ring 3 and an air inlet ring 5. The two tubular electrodes are both tubular electrodes made of metal and are called the first tubular electrode 1 and the second tubular electrode 2 respectively.

[0034] One end of the first tubular electrode 1 is closed. The electrode is connected to a phase line of the AC power supply through the high-frequency arc ignition device 11 (usually, the mains adopts a three-phase four-wire power supply mode, that is, three phase lines A, B, and C and a neutral line.). The high-frequency arc ignition device 11 is a high-frequency oscillator mainly composed of a step-up transformer, and is used to convert a low-frequency signal at its input end into a high-frequency h...