Герасимов, Г. Г. and Герасімов, Є. Г. and Іванов, С. Ю. and Herasуmov, H. H. and Gerasimov, Ie. H. and Ivanov, S. Yu. (2019) РОЗРАХУНОК КОНУСНОГО ФІЛЬТРА ДЛЯ ПОПЕРЕДНЬОГО ОЧИЩЕННЯ ВОДИ. Вісник Національного університету водного господарства та природокористування (2(86)). pp. 92-111.

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Abstract

В статті розглянуто конструкцію конусного фільтра для попереднього механічного очищення води, який розташовується всередині напірного трубопроводу насосної станції. Виконаний розрахунок процесів внутрішнього і зовнішнього промивання сітчастого полотна фільтра і забезпечення допустимої швидкості обертання промивної флейти В результаті розрахунків визначені основні геометричні і гідравлічні параметри пристрою.

Title in English

CALCULATION OF CONE FILTER FOR PRELIMINARY WATER CLEANING

English abstract

The article deals with the design of a conical filter for preliminary mechanical purification of water, which is located inside the pressure pipeline of a pumping station of steam turbine units. Filters for circulating pumps must ensure reliable ball cleaning and maintain minimum hydraulic resistance, and periodically flush the tapered filter nets. Flushing should be performed on the go without switching and without stopping. The characteristics of cone filters are given. The calculation of the processes of internal and external flushing of the mesh filter and ensuring the permissible speed of rotation of the flushing flute was performed. As a result of the calculations, the basic geometrical and hydraulic parameters of the device were determined. The advantages of cone filters include the fact that no more than 1 ... 5% of water is consumed from the pipeline for flushing. The effective rotational speed of the valve flushing device is 4 to 15 revolutions per minute for different concentrations of water contamination by mechanical particles. Total hydraulic losses on the structure range from 0.2 to 0.4 m for different operating modes, which is several times less than the similar hydraulic losses on traditional designs of water treatment facilities, in particular, water treatment cartridges. Given the above, and the fact that the use of cone filters eliminates the need for manual cleaning of filters (which takes an average of 10 ... 15% of working time), we can speak about the economic feasibility of using a conical design. The advantages of cone filters should also include their small material capacity, the possibility of modular manufacturing for placement at pumping stations, different productivity. Currently, enough experience has been gained in the design and constructions of mechanical water treatment devices of various types, but the experience of their effective operation is clearly not enough.

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