SU826079A1 - Method of determining critical cavitation reserve of blade-type pump - Google Patents
Method of determining critical cavitation reserve of blade-type pump Download PDFInfo
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- SU826079A1 SU826079A1 SU792811043A SU2811043A SU826079A1 SU 826079 A1 SU826079 A1 SU 826079A1 SU 792811043 A SU792811043 A SU 792811043A SU 2811043 A SU2811043 A SU 2811043A SU 826079 A1 SU826079 A1 SU 826079A1
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- USSR - Soviet Union
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- blade
- type pump
- pump
- determining critical
- critical cavitation
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Description
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Изобретение относитс к гидромашиностроению , а именно к кавитационным испытани м лопастных насосов и может быть применено в насосостроении при экспериментальном определении критического (срывного ) кавитационного запаса шнекоцентробежных и шнековых (осевых) насосов, перекачивающих криогенные жидкости.The invention relates to hydraulic engineering, in particular to cavitation tests of vane pumps and can be applied in pump engineering in the experimental determination of the critical (stalling) cavitational stock of centrifugal and screw (axial) pumps pumping cryogenic liquids.
Известен способ определени критического кавитационного запаса лопастного насоса , перекачивающего криогенную жидкость , путем его испытани на этой жидкости при посто нных значени х производительности и угловой скорости вращени рабочего колеса, и переменном давлении на входе в насос 1. По результатам этого испытани строитс частна кавитационна характеристика насоса и с ее помощью определ етс критический (срывной) кавитационный запас насоса , соответствующий началу резкого падени напора насоса.A known method for determining the critical cavitation stock of a vane pump pumping a cryogenic fluid by testing it on this fluid at constant values of the performance and angular velocity of rotation of the impeller and alternating pressure at the inlet of the pump 1. Based on the results of this test, the partial cavitation characteristic of the pump and with its help, the critical (breakdown) cavitational reserve of the pump, corresponding to the beginning of a sharp drop in the pump head, is determined.
Однако этот способ вл етс сложным, что обусловлено необходимостью проведени испытани насоса на криогенной (рабочей ) жидкости, и требует применени дорогосто щего оборудовани .However, this method is complicated due to the need to test the pump on a cryogenic (working) fluid, and requires the use of expensive equipment.
Известен также способ определени критического кавитационного запаса лопастного насоса, перекачивающего криогенную жидкость, путем его испытани на холодной деаэрированной воде при посто нных значени х производительности и угловой скорости вращени рабочего колеса, и переменном давлении на входе в насос, и на модельной жидкости при одинаковых значени х произведени критериев, характеризующих услови подоби тепловых и гидродинамических процессов при кавитационном срыве работы насоса на криогенной и модельной жидкост х 2.There is also known a method for determining the critical cavitation reserve of a vane pump pumping a cryogenic liquid by testing it with cold deaerated water at constant values of performance and angular velocity of rotation of the impeller, and with variable pressure at the pump inlet, and with model liquid with the same values the production of criteria characterizing the conditions for the similarity of thermal and hydrodynamic processes in the case of cavitation breakdown of the operation of a pump on cryogenic and model fluids 2.
Однако известный способ вл етс сложным , так как в качестве модельной приходитс использовать криогенную жидкость.However, the known method is complicated, since a cryogenic liquid must be used as a model.
Цель изобретени - упрощение испытани .The purpose of the invention is to simplify the test.
Поставленна цель достигаетс тем, что в качестве модельной жидкости используют высококип щую жидкость с растворенным в ней газом, причем угловую скорость вращени рабочего колеса при испытани х на холодной воде и высококип щей жидкости определ ют по формуле „ ., ,, -, со,,()-()This goal is achieved by using high-boiling liquid with gas dissolved in it as a model liquid, and the angular velocity of rotation of the impeller during tests on cold water and high-boiling liquid is determined by the formula () - ()
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792811043A SU826079A1 (en) | 1979-08-28 | 1979-08-28 | Method of determining critical cavitation reserve of blade-type pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792811043A SU826079A1 (en) | 1979-08-28 | 1979-08-28 | Method of determining critical cavitation reserve of blade-type pump |
Publications (1)
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SU826079A1 true SU826079A1 (en) | 1981-04-30 |
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Application Number | Title | Priority Date | Filing Date |
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SU792811043A SU826079A1 (en) | 1979-08-28 | 1979-08-28 | Method of determining critical cavitation reserve of blade-type pump |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4554832A (en) * | 1982-11-10 | 1985-11-26 | Nippon Furnace Kogyo Kaisha, Ltd. | Simulator of fluid flow in field of flow entailing combustion or reaction |
-
1979
- 1979-08-28 SU SU792811043A patent/SU826079A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4554832A (en) * | 1982-11-10 | 1985-11-26 | Nippon Furnace Kogyo Kaisha, Ltd. | Simulator of fluid flow in field of flow entailing combustion or reaction |
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