等离子点火装置配套改造与效益分析

华电技术 ›› 2018, Vol. 40 ›› Issue (3): 24-26.

等离子点火装置配套改造与效益分析

1.京能十堰热电有限公司，湖北十堰〓442000；2.西安热工研究院有限公司，西安〓710054；3.陕西工业职业技术学院，陕西咸阳〓712000

出版日期:2018-03-25 发布日期:2018-06-07

Transformation and benefit analysis of plasma ignition device

1.Beijing Energy Shiyan Thermal Power Company Limited, Shiyan 442000, China; 2.Xi’an Thermal Power Research Institute Company Limited, Xi’an 710054, China；3. Shaanxi Polytechnic Institute，Xianyang 712000，China

Online:2018-03-25 Published:2018-06-07

摘要/Abstract

摘要：

为提高制粉系统对等离子点火装置的支持度，解决磨煤机在最小出力以下工况易发生剧烈振动的问题，提出了磨煤机变频化改造的技术方案。对锅炉底层磨煤机电机加装变频器，锅炉启动时，保持磨煤机最小给煤量不变，通过降低磨盘转速来减少制粉出力，满足等离子点火装置要求。由于给煤量未降低，磨盘上的煤层厚度得到保证，磨煤机不发生明显振动。现场使用表明，改造后制粉系统与等离子点火系统匹配度显著提高，等离子点火装置投用平稳，磨煤机运行正常，环保效益及经济效益良好。

关键词:

">">等离子点火, 磨煤机, 振动, 变频化改造

Abstract:

In order to improve the support on the plasma ignition device from the coal pulverizing system, to solve the problem of the severe vibration of the coal mill under the condition below minimum output, a technological transformation plan of the frequency conversion of the coal mill is put forward. Frequency converter is installed onto the motor at the bottom of boiler’s coal mill. When the boiler starts, it remains the minimum coal feed volume of the coal mill unchanged. Decreasing the speed of the disc can reduce the output of coal pulverizing and meeting the requirements of the plasma ignition device. As the amount of coal is not reduced, the thickness of the coal layer on the grinding disc is guaranteed, and the coal mill would not vibrate obviously. The field practice results show that the matching degree of the coal pulverizing system and the plasma ignition system is significantly improved after the transformation, so does the running smoothness of plasma ignition device and operation of coal mill. Environmental benefits and economic benefits are good.

Key words:

">">plasma ignition；coal mill；vibration；transformation of , frequency conversion

冯培峰1，王林2，刘晓莎3. 等离子点火装置配套改造与效益分析[J]. 华电技术, 2018, 40(3): 24-26.

FENG Peifeng1, WANG Lin2，LIU Xiaosha3.

Transformation and benefit analysis of plasma ignition device

[J]. Huadian Technology, 2018, 40(3): 24-26.

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