数控采暖锅炉日常使用常见误区分析
    2013-10-30 13:25:05  文章来源:http://www.jnlzsb.com
     

    数控采暖锅炉运行是一项专业性、技术性极强的工作。由于从事这项工作的人员素质不同,难免会产生这样或那样的认识,在此高科锅炉厂浅析以下十个认识误区,以便有关人士能澄清模糊认识,提高操作技术水平,实现锅炉机组的安全经济运行。

    Operating CNC heating boiler is a professional, highly technical work. As engaged in the work of the staff quality, will have this or that kind of understanding, on the analysis of Gaoke boiler factory ten misunderstandings, so that people concerned to clarify ambiguous understanding, improve the technological level of operation, to achieve safe and economic operation of boiler.

    误区之一:蒸汽压力越高越好

    数控锅炉蒸汽压力的选定,主要取决于用户的需要。汽压低,对承压部件的安全有利,能耗也低,但蒸汽的品质就差,热焓低,湿度也大,甚至难以满足消毒、杀菌、培养、采暖和发电的需要。

    Selected numerical control of boiler main steam pressure, depending on the needs of the user. Steam pressure low, on the safety of pressure components, energy consumption is low, but the steam quality is poor, low heat content, humidity is big, even it is difficult to meet the need of disinfection, sterilization, culture, heating and power generation.

    误区之二:锅水水位越高越安全

    有人认为水位高一些,锅炉就不容易缺水,安全性就有保障。然而却是一种错误认识。水位过高,蒸汽湿度加大,蒸汽品质不良,就会危害用汽设备和生产。

    误区之三:燃料加得越多越好

    有人认为煤加得越多产汽量就越大。殊不知过多的煤进入炉膛,效果会适得其反。煤与空气的重量比宜为19.14。当空气量一定而燃料量过多时,炉内就会产生大量的不完全燃烧物,如一氧化碳等。人们常常见到炉膛火焰发暗、无力,且烟囱冒黑烟,大都是这个原因。严重时,煤粉炉会出现灭火,油炉会出现二次燃烧、爆管直至停炉。所以,燃料与风量的配比应调节得当,通常可通过看火、看烟色、看氧量表指示来确定。当炉内火焰呈亮黄色,烟囱冒淡灰色烟,汽压稳定,表明风煤配比适当,燃烧情况良好。)  

    Some people think that coal add more prolific steam amount is higher. Not knowing too much coal into the furnace, the effect will be run counter to one's desire. The weight ratio of coal and air should be 1: 9.14. When the air amount and the amount of fuel in the furnace is overmuch, can produce a large amount of incomplete combustion, such as carbon monoxide. People often see the furnace flame dark, weakness, and the smoke from the chimney, mostly for this reason. Serious when, pulverized coal furnace will be fire, oil will appear two times, until the shutdown of the boiler tube explosion combustion. Therefore, the fuel and air ratio should be adjusted properly, often can see through the fire, smoke, see the oxygen meter to determine. When the flame was bright yellow, pale grey smoke out the chimney, pressure stability, show that the wind coal ratio properly, combustion in good condition. )

    误区之四:煤粒越细越好

    从燃烧角度看,煤粒越细就越易与空气形成良好混合,燃烧越完全。但煤粒过细,对电站锅炉而言,制粉电耗将大大增加。 

    数控采暖锅炉误区之五:炉膛负压越大越好"

    燃煤锅炉炉膛运行负压应维持在1020Pa。负压过大将导致:①炉膛漏风增加,排烟热损失增大;②风机电耗加大;③飞灰对沿程受热面的磨损加剧;④降低炉膛燃烧热效率。

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