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 turbinesInfo
- 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
Links
Classifications
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro 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)
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) |
-
1948
- 1948-12-20 SU SU388979A patent/SU79502A1/en active
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