今年在法兰克福举办的ACHEMA展会上，OSNA-Pumpen股份有限公司首次展出NMH/NMV系列新品泵。这一系列的泵产品是以前MH/MV系列产品的进一步发展。
这一系列包括带有闭合径向叶轮的耐磨损水平或竖直多级离心泵。性能指标从DN32到DN80的排放管道可达到最大流量220m³/h，最大扬程400米。密封压缩包装的最高液体温度为110摄氏度，对机械密封的最高可达140摄氏度。利用不同的叶轮直径，泵能够调整到最佳的操作点。正是由于这一点，高效率也可以减少运行成本。
目前，我们用铸铁和青铜作为材料。以后，计划用正在研制的铸钢和不锈钢来替代，还要启用DN80以上的排放管道。不锈钢的叶轮已经投入市场。这一新型泵的优点是在液体区域不再有定位环。
这些泵产品采用弹性连接，并使用IEC电动机驱动。卧式泵则可能会采用柴油或者涡轮发动机。
这些新一代的NMH/NMV泵具备先前MH/MV系列泵所有的各项性能，并且可以与之替换。
通过一贯的品质和价格，这一泵系列产品的市场竞争能力将会有相当的提高。
New Series of High-Pressure Pumps
During this year’s ACHEMA in Frankfurt/Main, OSNA-Pumpen GmbH presented the new pump series NMH/NMV for the first time. This pump series is a further development of the former MH/MV series.
This series contains robust abrasion-proof horizontal or vertical multistage centrifugal pumps with closed radial impellers. The performance range comprises a maximum capacity of 220 m³/h and a maximum head of 400 m in nominal sizes of discharge branches from DN 32 to DN 80. The maximum liquid temperature for the version with gland packing is 110 °C and 140 °C for the version with mechanical seal. By use of different impeller diameters the pumps can be optimally adjusted to the operation point. Because of this the operating costs can be reduced by high efficiency.
At present, we are using materials like cast iron and bronze. But the version in cast steel and stainless steel is in the planning, as well as the extension with a discharge branch > DN 80. Impellers in stainless steel are already available. The advantage of this new pump range is that there are no retaining rings in the area of the liquid.
(源自：中华机械网) |
机械通会员 《中华机械》杂志