The ash particle spiral separator belongs to the technical field of boiler flue gas pipeline. In order to solve the problem that the coal type of large-scale coal-fired power plant boiler is constantly changing, the practical coal type of some large-scale power plants is quite different from the designed coal type in ash content, and the equipment such as fans directly arranged at the flue outlet of the boiler tail is easy to be blocked by ash deposition and fly ash abrasion. The main shaft of the separator is set in the flue through the hanger of the main shaft. The outer wall of the main shaft of the separator is provided with a spiral blade. The outer edge of the spiral blade is matched with the inner wall of the flue. The flue is provided with a plurality of ash collecting devices along the circumference. The ash collecting devices are provided with a plurality of ash collecting ports from the top to the bottom. Each ash collecting port is connected with the flue. The ash particle spiral separator of the invention has high separation efficiency, small overall equipment quality, compact external structure of the flue, and small space occupation; in addition, according to the actual engineering needs, the invention can add a disturbing flow or unscrewing module with high flexibility.
【技术实现步骤摘要】
灰颗粒螺旋分离器
本专利技术涉及一种分离器,具体涉及灰颗粒螺旋分离器,属于锅炉烟气管道
技术介绍
汽轮发电机组作为火力发电的核心技术经历了一百多年的发展历程,最大机组容量已超过1000MW超超临界,受限于700℃等级的耐热镍基合金钢的价格的制约,燃煤电站锅炉的效率已提升至瓶颈,广大电力行业工作者逐渐转入到原有机组稳定性、可靠性等等研究方向上来。随着高质量煤源的不断减少,大型燃煤电站锅炉的煤种不断变化,部分大型电厂的实用煤种与设计煤种在灰分上相差较大,亦或部分锅炉在尾部烟道出口处直接布置有风机等易发生积灰堵塞和飞灰磨损的设备,一旦机组负荷发生连续突变,工况变化剧烈时,易引起相关临近设备的堵塞或损坏,进而导致机组整体急停,对大型燃煤电站的安全、稳定的运行造成了严重的影响。
技术实现思路
本专利技术的目的是提供灰颗粒螺旋分离器,以解决大型燃煤电站锅炉的煤种不断变化,部分大型电厂的实用煤种与设计煤种在灰分上相差较大,锅炉尾部烟道出口处直接布置的风机等设备易发生积灰堵塞和飞灰磨损的问题。灰颗粒螺旋分离器,包括垂直设置的烟道,烟道内设有分离器主轴,分离器主轴通过主轴吊架 ...
【技术保护点】
1.灰颗粒螺旋分离器,包括垂直设置的烟道,其特征在于:所述烟道内设有分离器主轴(2),分离器主轴(2)通过主轴吊架(3)设置在烟道内,分离器主轴(2)的外壁上设有螺旋面叶片(1),螺旋面叶片(1)的外边缘与烟道内壁相配合,烟道沿圆周方向设有多个集灰装置(4),集灰装置(4)由上至下设有多个集灰口,每个集灰口均与烟道连通;所述螺旋面叶片(1)包括起偏螺旋叶片(5)和分离螺旋叶片(6),起偏螺旋叶片(5)位于烟道入口一侧,起偏螺旋叶片(5)与分离螺旋叶片(6)相连接,且起偏螺旋叶片(5)的螺距为分离螺旋叶片(6)螺距的1.5倍‑3倍。
【技术特征摘要】
1.灰颗粒螺旋分离器,包括垂直设置的烟道,其特征在于:所述烟道内设有分离器主轴(2),分离器主轴(2)通过主轴吊架(3)设置在烟道内,分离器主轴(2)的外壁上设有螺旋面叶片(1),螺旋面叶片(1)的外边缘与烟道内壁相配合,烟道沿圆周方向设有多个集灰装置(4),集灰装置(4)由上至下设有多个集灰口,每个集灰口均与烟道连通;所述螺旋面叶片(1)包括起偏螺旋叶片(5)和分离螺旋叶片(6),起偏螺旋叶片(5)位于烟道入口一侧,起偏螺旋叶片(5)与分离螺旋叶片(6)相连接,且起偏螺旋叶片...
【专利技术属性】
技术研发人员:吕健,程艳洁,赵友彬,
申请(专利权)人:哈尔滨锅炉厂有限责任公司,
类型:发明
国别省市:黑龙江,23
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