SU79502A1 - Anti-cavitation device for blades of impellers of water turbines, pumps and wind turbines - Google Patents

Anti-cavitation device for blades of impellers of water turbines, pumps and wind turbines

Info

Publication number
SU79502A1
SU79502A1 SU388979A SU388979A SU79502A1 SU 79502 A1 SU79502 A1 SU 79502A1 SU 388979 A SU388979 A SU 388979A SU 388979 A SU388979 A SU 388979A SU 79502 A1 SU79502 A1 SU 79502A1
Authority
SU
USSR - Soviet Union
Prior art keywords
blade
turbines
pumps
impellers
blades
Prior art date
Application number
SU388979A
Other languages
Russian (ru)
Inventor
Б.Б. Кажинский
Original Assignee
Б.Б. Кажинский
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Б.Б. Кажинский filed Critical Б.Б. Кажинский
Priority to SU388979A priority Critical patent/SU79502A1/en
Application granted granted Critical
Publication of SU79502A1 publication Critical patent/SU79502A1/en

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/20Hydro energy

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Hydraulic Turbines (AREA)

Description

Изобретение относитс  к приспособлени м дл  защиты от кавитационной эрозии рабочих органов (лонастей) быстроходных насосов, вод ных турбин и гребных винтов путем создани  устойчивой жидкостной пленки между областью каверны и поверхностью обтекаемого тела.The invention relates to devices for protection against cavitation erosion of the working bodies (lofts) of high-speed pumps, water turbines and propellers by creating a stable liquid film between the cavity area and the surface of the streamlined body.

Известен способ устранени  кавитации в аэродинамике, заключающийс  в подаче сжатого воздуха на обтекаемую поверхность через насадки. Однако дл  этого необходимо применение компрессора с дополнительной затратой энергии. Устройства, основанные на этом методе , не нащли применени  в гидромашинах.There is a known method of eliminating cavitation in aerodynamics, which consists in supplying compressed air to a streamlined surface through nozzles. However, this requires the use of a compressor with an additional expenditure of energy. Devices based on this method have not been used in hydraulic machines.

Предлагаемое приспособление, подобно известным, содержит один или несколько каналов-антикавитаторов, создаваемых внутри лопасти и соедин ющих между собой области пониженного давлени  в месте образовани  каверн в тыльной части лопасти с областью повышенного давлени  перед лопастью.The proposed device, similarly known, contains one or several anticavitational channels created inside the blade and connecting the areas of reduced pressure at the place of formation of cavities in the back of the blade with the area of increased pressure in front of the blade.

Отличительна  особенность предлагаемого приснособлени  состоит в том, что каналы располагаютс  приблизительно в радиальном направлении на таком участке лопасти, чтобы их входные отверсти  были возможно ближе к оси вращени  колеса, а выходные отверстн  размещаютс  в нескольких местах на разных рассто ни х от оси.A distinctive feature of the proposed arrangement is that the channels are located approximately in the radial direction in such a portion of the blade so that their inlets are as close as possible to the axis of rotation of the wheel and the outlets are located in several places at different distances from the axis.

Дл  создани  устойчивой жидкой нленки на обтекаемой поверхности тела примен ютс  каналы, имеющие загиб иа выходе у обтекаемой поверхности. Предлагаемый способ обеспечивает иодвод жидкости по каналу с выходом ее на обтекаемую поверхность лопасти без применеии  каких-либо механических средств (насосов, компрессора и т. д.).To create a stable liquid film on the streamlined surface of the body, channels are used that have a bend and exit at the streamlined surface. The proposed method provides iodide fluid through the channel with its release on the streamlined surface of the blade without the use of any mechanical means (pumps, compressor, etc.).

На чертеже изобралсено четырехлопастное рабочее колесо в общем виде.The drawing shows a four-bladed impeller in general.

В каждой лопасти колеса у ступицы г1меютс  отверсти  2 дл  входа жидкости в каналы /, у которых выходные концы, с целью исключени  гидравлических сопротивлений, изогнуты в сторону, обратную направлению вращени . На обратной стороне обтекаемой поверхности лопасти наход тс  выходные отверсти  3.In each blade of the wheel, at the hub of the hub, there are holes 2 for the entrance of fluid into the channels / at which the output ends, in order to eliminate hydraulic resistances, are bent in the direction opposite to the direction of rotation. On the reverse side of the streamlined surface of the blade, there are outlet openings 3.

Предмет изобретени Subject invention

Claims (2)

1. Антикавита-ционное приспособление дл  лопастей рабочих колес вод ных турбин, насосов и ветродвигателей, содержащее один или несколько каналов-антикавитаторов внутри лопасти, соедин ющих1. An anti-cavitation device for blades of impellers of water turbines, pumps and wind turbines, containing one or several anti-cavitator channels inside the blade, connecting между собою области пониженного давлени  в месте образовани  кавитационных полостей (каверн) в тыльной части лопасти с областью повышенного давлени  перед лопастью, отличающеес  тем, что каналы располагаютс  приблизительно в радиальном направлении и размещаютс  на таком участке лоласти, что их входные отверсти  расположены возможно ближе к оси вращени  колеса, а выходные отверсти  размещаютс  в нескольких местах на разных радиальных рассто ни х от оси.between them, the areas of reduced pressure at the site of formation of cavitation cavities (cavities) in the rear part of the blade with the area of increased pressure in front of the blade, characterized in that the channels are located approximately in the radial direction and are located on such an area of the blade, that their inlets are located as close as possible to the axis rotation of the wheel, and the outlets are located in several places at different radial distances from the axis. 2. Форма выполнени  приспособлени  по п. I, отличающа е  тем, что выходные части каналов выполн ютс  с загибом в сторону , противоположную направлению вращени .2. An embodiment of the device according to claim I, characterized in that the output portions of the channels are bent in the direction opposite to the direction of rotation.
SU388979A 1948-12-20 1948-12-20 Anti-cavitation device for blades of impellers of water turbines, pumps and wind turbines SU79502A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU388979A SU79502A1 (en) 1948-12-20 1948-12-20 Anti-cavitation device for blades of impellers of water turbines, pumps and wind turbines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU388979A SU79502A1 (en) 1948-12-20 1948-12-20 Anti-cavitation device for blades of impellers of water turbines, pumps and wind turbines

Publications (1)

Publication Number Publication Date
SU79502A1 true SU79502A1 (en) 1949-11-30

Family

ID=48253484

Family Applications (1)

Application Number Title Priority Date Filing Date
SU388979A SU79502A1 (en) 1948-12-20 1948-12-20 Anti-cavitation device for blades of impellers of water turbines, pumps and wind turbines

Country Status (1)

Country Link
SU (1) SU79502A1 (en)

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