造纸行业该怎么选择水环真空泵

  • Article source:Industry News
  • Website editor:莱诺真空泵
  • Reading volume:
  • Publication time:2019-12-17 13:59:51

造纸行业该怎么选择水环真空泵(图1)

1、选用节能水环真空泵

目前国内外市场上适用于造纸行业使用的水环真空泵有FSK、2BV、2BE等几个系列,通过近几年针对粗低真空行业水环真空泵的新产品开发,水环真空泵的效率取得了较大幅度的提高

 

2、选用低转速水环真空泵

水环真空泵的效率与转速有直接的关系,水环真空泵的气量与转速成一次方的关系,在转速偏高规定时,轴功率却与转速成近似二次的关系。当转速提高百分之10时气量也提高百分之10,而轴功率却增加百分之20左右,所以在选用真空泵时,应尽可能选用低转速的水环真空泵

造纸行业该怎么选择水环真空泵(图2)

3、各真空点组合合理

应将真空度和空间位置相近的真空点组合在一起,用一台较大型的水环真空泵来抽吸,水环真空机组组合应考虑有利于管路布置,区别各功能区。在气量相近、真空度不同时可选用带隔板的水环真空泵

 

4、水环真空泵组合点气量应进行换算

造纸行业该怎么选择水环真空泵(图3)

5、应适当考虑真空泵管路损失

从各真空元件抽吸过来的气体在管路中流动会有一定的管路损失,这部分管路损失将造成气体的压力降低,体积膨胀

 

6、介质温度应适当修正

因造纸机上水环真空泵抽吸的气体是较高温度的湿空气,并且水环真空泵的工作液由于条件限 制,水温较高,这与水环真空泵性能曲线上标定的工况不一致,所以需要进行 气温、水温的修正

当气温取得较高、水温较低时,修正出来的气量将比较小,选出的水环真空泵也就比较小,否则选出的水环式真空泵将比较大


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