| 刘明明,庄海飞,郭 涛,武永顶.6 500 m3/h绞吸船用泥泵四叶片叶轮研发[J].水运工程,2021,(4):194-199 |
| 6 500 m3/h绞吸船用泥泵四叶片叶轮研发 |
| Research and development of dredge pump with four blades impeller for 6 500 m3/h cutter suction dredger |
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| DOI： |
| 中文关键词: 泥泵 叶轮 绞吸船 数值模拟 模型试验 产量 |
| 英文关键词:dredging pump impeller cutter suction dredger numerical simulation model test production |
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| 中文摘要: |
| 为适应绞吸挖泥船超长排距时的施工需要，在6 500 m3/h绞吸挖泥船原三叶片高效高压泥泵的基础上，保证叶轮外形尺寸不变、叶轮流道通过能力不下降的情况下，分别对叶轮轴面和轴面流线进行水力设计，设计叶轮为四叶片扭曲叶片，并结合数值模拟对叶片包角进行优化计算，确定叶片包角为138°。通过模型泵试验，对比测试与模拟计算结果，验证叶轮的水力性能。通过对比四叶片与原三叶片高效高压泥泵的性能参数，预测两者在不同土质、不同排距下的生产率与能耗情况。结果表明，四叶片泥泵扬程比原三叶片高效高压泥泵提高了18 m以上，最高效率达到86%，且通过球径均为425 mm；土质为0.2 mm细砂时，研发泥泵的生产率提高了9%以上，排距提高了14%以上，耗功最小值降低了约3.5%。 |
| 英文摘要: |
| In order to adapt the construction condition of a long row of shore distance for cutter suction dredger，on the basis of the original high efficient and high-pressure dredge pump with three blades on 6 500 m3/h cutter suction dredger，ensuring the shape of impeller unchanged and capacity of impeller passage no decline，we design the axial plane and the shaft surface streamline of the impeller，propose the four twisted blades impeller，calculate the optimization for the blade wrap angle combining with numerical simulation，determine the blade angle as 138°，verify the hydraulic performance of the pump by comparing the test results with the simulation results through the model pump test，and predict the productivity and energy consumption under the condition of different soil，the different row of shore distance by comparing the new impeller with the original impeller with three blades. The results show that compared with the original impeller with three blades，the four blades dredge pump lifts up by more than 18 m，the highest water efficiency reaches 86%，and the through particle sizes of the two impellers are both 425 mm. With 0.2 mm fine sand，the productivity of the dredge pump increases by more than 9%，the row of shore distance increases by more than 14%，and the minimum energy consumption reduces by about 3.5%. |
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