title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° ÐºÐ¾Ð¼Ð±Ð¸Ð½Ð¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð³Ð¾ Ð¼ÐµÑÐ¾Ð´Ð° Ð¾Ð¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ð¸ ÑÐ¾ÑÐ¼Ñ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ¾Ð² Ð¿ÑÐ¾ÑÐ¾ÑÐ½Ð¾Ð¹ ÑÐ°ÑÑÐ¸ ÑÐ¸Ñ Ð¾Ñ Ð¾Ð´Ð½ÑÑ ÑÐµÐ½ÑÑÐ¾Ð±ÐµÐ¶Ð½ÑÑ Ð½Ð°ÑÐ¾ÑÐ¾Ð²
title: Development of a combined method of low-speed centrifugal pumps flow passages optimization
Creators: name: ÐÐ¸ÑÐ»ÑÐ½ÑÐµÐ², ÐÐ»ÐµÐºÑÐ°Ð½Ð´Ñ
name: ÐÐ¾Ð»ÐºÐ¾Ð², ÐÐ»ÐµÐºÑÐ°Ð½Ð´Ñ
name: Å oukal, JiÅÃ­
name: SedlaÅ, Milan
name: KomÃ¡rek, Martin
name: PochylÃ½, FrantiÅ¡ek
name: Rudolf, Pavel
name: Ð ÑÐ¶ÐµÐ½ÐºÐ¾Ð², ÐÑÑÑÐ¼
name: ÐÑÑÐ¶Ð¸Ð½Ð¸Ð½, ÐÐ»ÐµÐºÑÐµÐ¹
name: ÐÐ°ÑÐºÐ¾Ð², ÐÐ¼Ð¸ÑÑÐ¸Ð¹
name: "ÐÐ¸Ð´ÑÐ°Ð²Ð»Ð¸ÑÐµÑÐºÐ¸Ðµ Ð¼Ð°ÑÐ¸Ð½Ñ, Ð³Ð¸Ð´ÑÐ¾Ð¿ÑÐ¸Ð²Ð¾Ð´Ñ Ð¸ Ð³Ð¸Ð´ÑÐ¾Ð¿Ð½ÐµÐ²Ð¼Ð¾Ð°Ð²ÑÐ¾Ð¼Ð°ÑÐ¸ÐºÐ°. Ð¡Ð¾Ð²ÑÐµÐ¼ÐµÐ½Ð½Ð¾Ðµ ÑÐ¾ÑÑÐ¾ÑÐ½Ð¸Ðµ Ð¸ Ð¿ÐµÑÑÐ¿ÐµÐºÑÐ¸Ð²Ñ ÑÐ°Ð·Ð²Ð¸ÑÐ¸Ñ", Ð¼ÐµÐ¶Ð´ÑÐ½Ð°ÑÐ¾Ð´Ð½Ð°Ñ Ð½Ð°ÑÑÐ½Ð¾-ÑÐµÑ Ð½Ð¸ÑÐµÑÐºÐ°Ñ ÐºÐ¾Ð½ÑÐµÑÐµÐ½ÑÐ¸Ñ (2020; Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³)
Publisher: name: ÐÐÐÐÐ¢ÐÐ¥-ÐÐ ÐÐ¡Ð¡
Year: 2020
Subjects: Ð­Ð½ÐµÑÐ³ÐµÑÐ¸ÐºÐ°
ÐÐ°ÑÐ¾ÑÑ
ÐÐ°Ð²Ð¸ÑÐ°ÑÐ¸Ñ

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description: Today, one of the main trends in the field of pump engineering is the digitalization of factories and the introduction of advanced information technologies. The purpose of these measures is to reduce the time spent on performing typical engineering tasks and increase the competitiveness of the developed pumping equipment by expanding the capabilities of existing engineering tools for optimization and design. At the same time, a constructor is increasingly assigned the role of an expert who evaluates the intermediate results of numerical modeling and transmits computer commands at key stages. A wide segment of the pump equipment market in the energetics and oil &amp; gas industries is represented by low-speed centrifugal pumps, which are particularly relevant to improving energy performance and compliance with international standards, which is especially important in the globalized world economy. This paper presents the results of research made in the framework of creating CAD of hydraulic machines using a combined approach to the synthesis of elements of flow parts of low-speed centrifugal pumps. The main advantages of this approach and the possibilities of its integration with engineering optimization methods and the latest scientific developments in the field of pump engineering for nowadays are considered. Preliminary computational and experimental studies were performed in order to accumulate the necessary amount of statistical information about the relationship between the value of hydraulic and mechanical losses and the geometry of the flow part of the centrifugal pump. The analysis of flow parameters using various concepts of construction of blade systems is carried out.
The developed combined method of low-speed centrifugal pumps flow passages optimization according to a given velocity chart is described. The optimal shape of this one was determined using the results of statistical analysis, theory
of experimental planning and multidimensional optimization methods. The results of the calculations of the developed combined method of designing the flow parts of centrifugal pumps on the example of singletier and multi-tier vane systems, taking into account the design restrictions on the dimensions of the body elements, are presented. The evaluation of the flow parts obtained by the developed method showed that they correspond to the statistical data on the head increase in multitiered blade systems. It is also found that centrifugal pumps with optimized flow parts correspond the requirements of API 610 and have better energy characteristics. The results of laboratory experimental research at the stand of NRU Â«MPEIÂ» and control tests made on the bench of one of the leading Russian manufactur69
ers of pumping equipment for the oil &amp; gas industry â CJSC Â«HydrogasÂ» are
presented. The test results demonstrate the effectiveness of the developed combined method. The solutions obtained on its basis have the required performance indicators, as well as better energy and cavitation indicators. According to the research results, the increase in the efficiency of the optimized serial pump was ÎÎ· = 5Ã·6%, and the decrease in the cavitation reserve was Îh=14Ã·55%.