Влияние формы проточной части на уровень давления создаваемый осевым вентилятором
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Дата
2017
ORCID
DOI
10.20998/2078-774X.2017.09.15
Науковий ступінь
Рівень дисертації
Шифр та назва спеціальності
Рада захисту
Установа захисту
Науковий керівник
Члени комітету
Видавець
НТУ "ХПИ"
Анотація
В статье представлены численное и экспериментальное исследования влияния формы проточной части осевого вентилятора на создаваемый перепад давлений. Исследованы конические, цилиндрические, цилиндро-конические, сфероконические и другие типы форм проточной части. Определены предельные уровни перепада давлений при условии сохранения высокого коэффициента полезного действия для осевых шахтных вентиляторов местного проветривания серийного производства. Даны рекомендации по применению отдельных типов форм проточной части для крупных осевых вентиляторов большой производительности с целью снижения металлоёмкости и повышению эффективности в широких пределах режимов работы.
This scientific paper describes numerical and experimental investigation of the influence produced by a shape of the flow pass of axial fan on the level of created pressure difference. Conical, cylindrical, cylindrical and conical, sphero-conical and other types of the shape of flow pass were investigated. Ultimate values of the levels of created pressure difference were defined provided that a high efficiency factor was retained for axial mine fans designed for the local ventilation of a full scale production. Recommendations on the use of some types of shapes of the flow pass for big axial fans of a high capacity were given to reduce specific quantity of metal and increase the efficiency in a wide range of operation modes. Investigation of the flow pass of the fan designed for the main local ventilation carried out using the 3D flow simulation and the experimental check showed an apparent advantage of the fan with the taper sleeve (flow pass with the meridional flow acceleration) in comparison with cylindrical meridional by-passes used at the present time. A total maximum pressure increment was 20 to 25 % and the maximum output increment was 20 to 30 %. First of all, this is related to a convergent behavior of the flow stream in the meridional plane, which results in a decrease of the influence of separated flows.
This scientific paper describes numerical and experimental investigation of the influence produced by a shape of the flow pass of axial fan on the level of created pressure difference. Conical, cylindrical, cylindrical and conical, sphero-conical and other types of the shape of flow pass were investigated. Ultimate values of the levels of created pressure difference were defined provided that a high efficiency factor was retained for axial mine fans designed for the local ventilation of a full scale production. Recommendations on the use of some types of shapes of the flow pass for big axial fans of a high capacity were given to reduce specific quantity of metal and increase the efficiency in a wide range of operation modes. Investigation of the flow pass of the fan designed for the main local ventilation carried out using the 3D flow simulation and the experimental check showed an apparent advantage of the fan with the taper sleeve (flow pass with the meridional flow acceleration) in comparison with cylindrical meridional by-passes used at the present time. A total maximum pressure increment was 20 to 25 % and the maximum output increment was 20 to 30 %. First of all, this is related to a convergent behavior of the flow stream in the meridional plane, which results in a decrease of the influence of separated flows.
Опис
Ключові слова
меридиональное ускорение, втулка, коэффициент полезного действия, КПД, meridional acceleration, taper sleeve
Бібліографічний опис
Гриценко Н. И. Влияние формы проточной части на уровень давления создаваемый осевым вентилятором / Н. И. Гриценко, В. Н Голощапов // Вісник Нац. техн. ун-ту "ХПІ" : зб. наук. пр. Сер. : Енергетичні та теплотехнічні процеси й устаткування = Bulletin of the National Technical University "KhPI" : coll. works. Ser. : Power and Heat Engineering Processes and Equipment. – Харків : НТУ "ХПІ", 2017. – № 9 (1231). – С. 90-95.