水泵导叶宽度对性能影响的研究

发布时间：2017-12-31 18:04

本文关键词：水泵导叶宽度对性能影响的研究　出处：《大连理工大学》2012年硕士论文　论文类型：学位论文

【摘要】：水泵是广泛应用于各种工程的常用设备之一,水泵所耗能耗之和占全国总能耗的比例相当大,因此在能源危机和大力提倡节能低碳的背景下,改进水泵的设计性能具有重大意义。长期以来水泵设计和研究者将主要精力投入到叶轮的设计和改进上,很少针对导叶设计进行较全面和深入的研究,随着计算流体力学在水泵研究中的扩展应用,导叶中的一些流动现象逐渐被发现,而且导叶对于机器的性能有着重大影响已成为共识。本文以余热排出泵和喷淋泵首级的导叶为研究对象,着重研究导叶子午流道变化对于导叶内部流动和机器性能的影响规律,以寻求一种导叶子午流道的最佳设计方法。本文研究对象是某公司的余热排出泵和喷淋泵的首级导叶,针对其存在的流动问题进行改进,改善其流场,提高其性能。本文利用CAD软件对余热排出泵和喷淋泵的原始设计方案进行建模,利用NUMECA软件进行数值模拟,并分析其内部流动问题,针对其流动问题进行多种方案分析,选取最优方案,最终通过实验验证改进的可行性。本文经过改进导叶,使得余热排出泵扬程提高2米,效率提高了2.5个百分点。使得喷淋泵首级扬程提高2.45米,效率提高4.6个百分点。经过实验验证可以看出,本文的改进使得余热排出泵和喷淋泵的首级的扬程和效率均大大地提高,对今后的设计和生产有着有益的影响,对我国的研发工作意义深远。
[Abstract]:The water pump is one of the common equipment widely used in various projects . The energy consumption of the water pump and the proportion of total energy consumption in the whole country are quite large . Therefore , it is very important to improve the design performance of the water pump under the background of energy crisis and energetically advocating energy saving and low carbon . In this paper , the primary guide vane of the waste heat discharge pump and spray pump of a company is studied in this paper . The flow problems are improved , the flow field is improved , and its performance is improved . By using the CAD software , the original design scheme of the waste heat discharge pump and spray pump is modeled , the internal flow problem is analyzed , and the optimal scheme is selected for the flow problem . Finally , the feasibility of the improvement is verified through experiment . This paper improves the guide vane so that the lift of the waste heat discharge pump is increased by 2 meters , the efficiency is improved by 2.5 percentage points , so that the head lift of the spray pump is improved by 2.45m and the efficiency is improved by 4.6 percentage points .

【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH38

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