双侧返料气动分配阀调节性能冷态实验研究

Cold Experiment Study on Regulating Characteristics of Pneumatic Distribution Valve with Dual-side Solids Returning

在气动分配阀实验台上，对双侧返料气动分配阀的调节性能进行了冷态实验研究。研究表明：分配阀单侧返料与双侧返料时，在未达到最大返料流率之前，返料流率随着流化风与松动风的增大而增加，返料流率对松动风的变化更加敏感；双侧返料时，只改变一侧流化风时对另外一侧没有影响，但是只改变一侧松动风时对另外一侧返料也会产生影响；调节流化风能够实现0～80％之间的调节，调节松动风能够实现30％～55％之间的调节；分流板高度ξ对分配阀单侧返料影响较大，在相同的流化数下，返料流率随ξ的增加而增大；ξ对双侧返料影响较小，对两侧分配比例几乎没有影响。

The regulating characteristics of pneumatic distribution valve were investigated. The results show that the solids recirculating rate increases with the increasing of the fluidized gas and the loosed gas on both singleside performance and dual-side performance when it＇ s less than the maximum solid recirculating rate, and the solids recirculating rate is more sensitive to the loosed gas. For dual-side performance, it has no effect on another side if only the fluidized gas of one side is changed, while it has effect on both side if only the loosed gas of one side is changed. Solids recirculation flux proportion of side A changes between 0 and 80% with the increasing of the fluidized gas and changes between 30% and 55% with the increasing of the the loosed gas. The height of splitter plate has effect on single-side performance. The solids recirculating rate with the same fluidization number increases with the increasing of ξ. The height of splitter plate ξ has little impact on dual-side performance and has little impact on solids recirculation flux ProPortion.