CN216307769U - 一种双枪少油点火煤粉燃烧器 - Google Patents
一种双枪少油点火煤粉燃烧器 Download PDFInfo
- Publication number
- CN216307769U CN216307769U CN202122661269.2U CN202122661269U CN216307769U CN 216307769 U CN216307769 U CN 216307769U CN 202122661269 U CN202122661269 U CN 202122661269U CN 216307769 U CN216307769 U CN 216307769U
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- burner
- ignition
- pulverized coal
- coal burner
- thick bamboo
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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Abstract
本实用新型公开了一种双枪少油点火煤粉燃烧器,包括燃烧器本体,所述燃烧器本体上设有点火燃烧器一和点火燃烧器二,所述燃烧器本体包括煤粉弯头和煤粉燃烧器外筒,所述煤粉弯头的出口端与煤粉燃烧器外筒固定,所述煤粉弯头远离煤粉燃烧器外筒的一端设有煤粉燃烧器喷口,所述燃烧器外筒的内部设有一级筒和二级筒,所述一级筒的一端插设在二级筒内且一级筒插入二级筒的深度L2=0~50mm,所述二级筒远离一级筒的一端靠近煤粉燃烧器喷口设置。本实用新型与现有技术相比的优点在于:其结构简单、易于实现,解决了目前少油点火燃烧器功率适应范围窄、成本高的问题,起到了功率调节、高效稳定燃烧的作用,确保了电站锅炉的安全启动运行。
Description
技术领域
本实用新型涉及煤粉燃烧器技术领域,具体是指一种双枪少油点火煤粉燃烧器。
背景技术
电站锅炉传统的大油枪点火方式耗油量巨大,点火成本很高。尤其是对于挥发分低的贫煤和无烟煤,点火过程更困难,耗油量更大。
目前,大多数电厂采用等离子或少油点火进行锅炉点火和稳燃。点火用煤的煤质越来越差,导致现有少油点火效果欠佳,不能有效地点燃煤粉,炉内燃烧未达到最佳效果。
而且,现有少油点火系统,点火燃烧器的功率调节范围较窄,在锅炉燃用煤质差于设计煤质时,锅炉煤粉燃烧器点火困难,燃烧不完全等等,锅炉点火启动已经遇到了困难;在燃用无烟煤、贫煤等劣质煤机组负荷降低至40%及以下时,锅炉的安全稳定燃烧已经阻碍了锅炉的安全运行,主要表现为:煤粉火检不稳定、炉底大渣含碳量高、炉膛负压波动大、主蒸汽参数较大波动等。目前,劣质煤点火、稳燃问题已经影响了燃煤锅炉的安全运行。
实用新型内容
本实用新型要解决的技术问题是克服以上的技术缺陷,提供一种双枪少油点火煤粉燃烧器。
为解决上述技术问题,本实用新型提供的技术方案为:一种双枪少油点火煤粉燃烧器,包括燃烧器本体,所述燃烧器本体上设有点火燃烧器一和点火燃烧器二,所述燃烧器本体包括煤粉弯头和煤粉燃烧器外筒,所述煤粉弯头的出口端与煤粉燃烧器外筒固定,所述煤粉弯头远离煤粉燃烧器外筒的一端设有煤粉燃烧器喷口,所述煤粉燃烧器外筒的内部设有一级筒和二级筒,所述一级筒的一端插设在二级筒内且一级筒插入二级筒的深度L2=0~50mm,所述二级筒远离一级筒的一端靠近煤粉燃烧器喷口设置。
作为改进,所述点火燃烧器一和点火燃烧器二均包括点火筒,所述点火筒的外端设有火检探头、油枪和高能点火装置,所述点火筒的外侧壁设有进风口。
作为改进,所述点火燃烧器一和点火燃烧器二的功率为0.3~3.5MW。
作为改进,所述点火燃烧器一设置在煤粉燃烧器外筒上且点火燃烧器一的一端延伸至二级筒内,所述点火燃烧器一与煤粉燃烧器外筒轴线之间的夹角α=5~30°。
作为改进,所述点火燃烧器二沿煤粉燃烧器外筒轴线插设在煤粉弯头上且点火燃烧器二插入一级筒的深度L1=0~50mm。
作为改进,所述点火燃烧器二倾斜插入至煤粉燃烧器外筒内且点火燃烧器二与煤粉燃烧器外筒轴线之间的夹角β=5~30°。
作为改进,所述点火燃烧器一和点火燃烧器二均倾斜插入至煤粉燃烧器外筒内且点火燃烧器一和点火燃烧器二与煤粉燃烧器外筒轴线之间的夹角均为β=5~30°。
作为改进,所述一级筒、二级筒为圆形或方形。
本实用新型与现有技术相比的优点在于:本实用新型的一种双枪少油点火煤粉燃烧器由于采用了上述技术方案,解决了燃用无烟煤、贫煤等劣质煤点火、稳燃的诸多困难,并优化燃烧器结构,增加燃烧器本体的功率调节范围,相同运行工况下可以大大提高双枪少油点火煤粉燃烧器的点火、稳燃能力。通过点火燃烧器一、点火燃烧器二和燃烧器本体合理的结构设计,可以使点火燃烧器一和点火燃烧器二喷出的火焰和煤粉气流充分、合理的混合,完美地点燃煤粉;此结构的双枪少油点火煤粉燃烧器是一种结构简单、易于实现、燃烧充分、燃烧性能稳定、具有锅炉点火、低负荷稳燃能力的煤粉燃烧器。
附图说明
图1为本实用新型实施例1的结构示意图。
图2为本实用新型实施例2的部分结构示意图。
图3为本实用新型实施例3的部分结构示意图。
图4为图1Ⅰ处横向的局部放大结构图。
如图所示:1、点火燃烧器一,2、煤粉弯头,3、煤粉燃烧器外筒,4、一级筒,5、二级筒,6、煤粉燃烧器喷口,7、火检探头,8、油枪,9、高能点火装置,10、进风口,11、点火燃烧器二。
具体实施方式
下面结合附图对本实用新型做进一步的详细说明。
下面结合附图来进一步说明本实用新型的具体实施方式。其中相同的零部件用相同的附图标记表示。
需要说明的是,下面描述中使用的词语“前”、“后”、“左”、“右”、“上”和“下”指的是附图中的方向,词语“内”和“外”分别指的是朝向或远离特定部件几何中心的方向。
为了使本实用新型的内容更容易被清楚地理解,下面将结合本实用新型实施例中的附图,对本实用新型实施例中的技术方案进行清楚、完整地描述。
实施例1
结合附图1,一种双枪少油点火煤粉燃烧器,包括燃烧器本体,所述燃烧器本体上设有点火燃烧器一1和点火燃烧器二11,所述燃烧器本体包括煤粉弯头2和煤粉燃烧器外筒3,所述煤粉弯头2的出口端与煤粉燃烧器外筒3固定,所述煤粉弯头2远离煤粉燃烧器外筒3的一端设有煤粉燃烧器喷口6,所述煤粉燃烧器外筒3的内部设有一级筒4和二级筒5,所述一级筒4的一端插设在二级筒5内且一级筒4插入二级筒5的深度L2=0~50mm,所述二级筒5远离一级筒4的一端靠近煤粉燃烧器喷口6设置。
所述点火燃烧器一1和点火燃烧器二11均包括点火筒,所述点火筒的外端设有火检探头7、油枪8和高能点火装置9,所述点火筒的外侧壁设有进风口10。
所述点火燃烧器一1和点火燃烧器二11的功率为0.3~3.5MW。
所述点火燃烧器一1设置在煤粉燃烧器外筒3上且点火燃烧器一1的一端延伸至二级筒5内,所述点火燃烧器一1与煤粉燃烧器外筒3轴线之间的夹角α=5~30°。
所述点火燃烧器二11沿煤粉燃烧器外筒3轴线插设在煤粉弯头2上且点火燃烧器二11插入一级筒4的深度L1=0~50mm。
所述一级筒4、二级筒5为圆形或方形。
实施例2
结合附图2,一种双枪少油点火煤粉燃烧器,包括燃烧器本体,所述燃烧器本体上设有点火燃烧器一1和点火燃烧器二11,所述燃烧器本体包括煤粉弯头2和煤粉燃烧器外筒3,所述煤粉弯头2的出口端与煤粉燃烧器外筒3固定,所述煤粉弯头2远离煤粉燃烧器外筒3的一端设有煤粉燃烧器喷口6,所述煤粉燃烧器外筒3的内部设有一级筒4和二级筒5,所述一级筒4的一端插设在二级筒5内且一级筒4插入二级筒5的深度L2=0~50mm,所述二级筒5远离一级筒4的一端靠近煤粉燃烧器喷口6设置。
所述点火燃烧器一1和点火燃烧器二11均包括点火筒,所述点火筒的外端设有火检探头7、油枪8和高能点火装置9,所述点火筒的外侧壁设有进风口10。
所述点火燃烧器一1和点火燃烧器二11的功率为0.3~3.5MW。
所述点火燃烧器一1设置在煤粉燃烧器外筒3上且点火燃烧器一1的一端延伸至二级筒5内,所述点火燃烧器一1与煤粉燃烧器外筒3轴线之间的夹角α=5~30°。
所述点火燃烧器二11倾斜插入至煤粉燃烧器外筒3内且点火燃烧器二11与煤粉燃烧器外筒3轴线之间的夹角β=5~30°。
所述一级筒4、二级筒5为圆形或方形。
实施例3
一种双枪少油点火煤粉燃烧器,包括燃烧器本体,所述燃烧器本体上设有点火燃烧器一1和点火燃烧器二11,所述燃烧器本体包括煤粉弯头2和煤粉燃烧器外筒3,所述煤粉弯头2的出口端与煤粉燃烧器外筒3固定,所述煤粉弯头2远离煤粉燃烧器外筒3的一端设有煤粉燃烧器喷口6,所述煤粉燃烧器外筒3的内部设有一级筒4和二级筒5,所述一级筒4的一端插设在二级筒5内且一级筒4插入二级筒5的深度L2=0~50mm,所述二级筒5远离一级筒4的一端靠近煤粉燃烧器喷口6设置。
所述点火燃烧器一1和点火燃烧器二11均包括点火筒,所述点火筒的外端设有火检探头7、油枪8和高能点火装置9,所述点火筒的外侧壁设有进风口10。
所述点火燃烧器一1和点火燃烧器二11的功率为0.3~3.5MW。
所述点火燃烧器一1和点火燃烧器二11均倾斜插入至煤粉燃烧器外筒3内且点火燃烧器一1和点火燃烧器二11与煤粉燃烧器外筒3轴线之间的夹角均为β=5~30°。
本实用新型在具体实施时,如图1-3所示,油枪可以替换成气枪,在锅炉燃用较好煤质时,单独的点火燃烧器二足以点燃经过燃烧器本体的煤粉气流,可以直接投用点火燃烧器二,点火燃烧器一停用。
在锅炉燃用无烟煤、贫煤等劣质煤时,单独的点火燃烧器二不足以点燃经过燃烧器本体的煤粉气流,为了可靠点燃煤粉,可以同时点燃点火燃烧器一和点火燃烧器二共同使用。
以上对本实用新型及其实施方式进行了描述,这种描述没有限制性,附图中所示的也只是本实用新型的实施方式之一,实际的结构并不局限于此。总而言之如果本领域的普通技术人员受其启示,在不脱离本实用新型创造宗旨的情况下,不经创造性的设计出与该技术方案相似的结构方式及实施例,均应属于本实用新型的保护范围。
Claims (8)
1.一种双枪少油点火煤粉燃烧器,包括燃烧器本体,其特征在于:所述燃烧器本体上设有点火燃烧器一(1)和点火燃烧器二(11),所述燃烧器本体包括煤粉弯头(2)和煤粉燃烧器外筒(3),所述煤粉弯头(2)的出口端与煤粉燃烧器外筒(3)固定,所述煤粉弯头(2)远离煤粉燃烧器外筒(3)的一端设有煤粉燃烧器喷口(6),所述煤粉燃烧器外筒(3)的内部设有一级筒(4)和二级筒(5),所述一级筒(4)的一端插设在二级筒(5)内且一级筒(4)插入二级筒(5)的深度L2=0~50mm,所述二级筒(5)远离一级筒(4)的一端靠近煤粉燃烧器喷口(6)设置。
2.根据权利要求1所述的一种双枪少油点火煤粉燃烧器,其特征在于:所述点火燃烧器一(1)和点火燃烧器二(11)均包括点火筒,所述点火筒的外端设有火检探头(7)、油枪(8)和高能点火装置(9),所述点火筒的外侧壁设有进风口(10)。
3.根据权利要求2所述的一种双枪少油点火煤粉燃烧器,其特征在于:所述点火燃烧器一(1)和点火燃烧器二(11)的功率为0.3~3.5MW。
4.根据权利要求3所述的一种双枪少油点火煤粉燃烧器,其特征在于:所述点火燃烧器一(1)设置在煤粉燃烧器外筒(3)上且点火燃烧器一(1)的一端延伸至二级筒(5)内,所述点火燃烧器一(1)与煤粉燃烧器外筒(3)轴线之间的夹角α=5~30°。
5.根据权利要求4所述的一种双枪少油点火煤粉燃烧器,其特征在于:所述点火燃烧器二(11)沿煤粉燃烧器外筒(3)轴线插设在煤粉弯头(2)上且点火燃烧器二(11)插入一级筒(4)的深度L1=0~50mm。
6.根据权利要求4所述的一种双枪少油点火煤粉燃烧器,其特征在于:所述点火燃烧器二(11)倾斜插入至煤粉燃烧器外筒(3)内且点火燃烧器二(11)与煤粉燃烧器外筒(3)轴线之间的夹角β=5~30°。
7.根据权利要求3所述的一种双枪少油点火煤粉燃烧器,其特征在于:所述点火燃烧器一(1)和点火燃烧器二(11)均倾斜插入至煤粉燃烧器外筒(3)内且点火燃烧器一(1)和点火燃烧器二(11)与煤粉燃烧器外筒(3)轴线之间的夹角均为β=5~30°。
8.根据权利要求1所述的一种双枪少油点火煤粉燃烧器,其特征在于:所述一级筒(4)、二级筒(5)为圆形或方形。
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