Abstract: This invention relates to a plasma igniter for directly igniting the pulverized coal burner. Said plasma igniter consists of a plasma generator which includes a composite anode, an combined type cathode, an electromagnetic coil and a transmitting coil; a pulverized coal burner which comprises multi-stage chambers for conveying igniting coal, an equipment for adjusting concentration of coal powder and a four-stage burner canister; and a generator brace. Said combined type cathode consists of a cathode plate, a fixation nut, a conductive pipe, an inflowing pipe, an inflowing guiding pipe, a cathode lid and a sealing spacer. The lining for generating electric arc is assembled with the front of cathode. An alloy plate is used as the cathode plate. The nozzle that used for cooling the cathode is first convergent and then expansive, and is placed in the middle of the conductive pipe. The plasma igniter has the advantage of stable burning.
Type:
Grant
Filed:
February 27, 2002
Date of Patent:
October 16, 2007
Assignee:
Yan Tai Long Yuan Electric Technology Co., Ltd.
Inventors:
Aisheng Wang, Hong Tang, Shuxin Ji, Yupeng Wang, Dong Tian, Gonglin Wang, Weiwu Ren, Xueyuan Chen, Ruihu Shao, Xiaoyong Zhang, Shuang Ma