FR2393964A1 - Procede pour la prevention de phenomenes destructifs lies a la cavitation - Google Patents

Procede pour la prevention de phenomenes destructifs lies a la cavitation

Info

Publication number
FR2393964A1
FR2393964A1 FR777717499A FR7717499A FR2393964A1 FR 2393964 A1 FR2393964 A1 FR 2393964A1 FR 777717499 A FR777717499 A FR 777717499A FR 7717499 A FR7717499 A FR 7717499A FR 2393964 A1 FR2393964 A1 FR 2393964A1
Authority
FR
France
Prior art keywords
cavitation
phenomena related
destructive phenomena
preventing destructive
components
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
FR777717499A
Other languages
English (en)
French (fr)
Other versions
FR2393964B1 (it
Inventor
Yves Lecoffre
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alsthom Atlantique SA
Original Assignee
Alsthom Atlantique SA
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 Alsthom Atlantique SA filed Critical Alsthom Atlantique SA
Priority to FR777717499A priority Critical patent/FR2393964A1/fr
Priority to IT23975/78A priority patent/IT1094887B/it
Priority to GB7826351A priority patent/GB2000249B/en
Publication of FR2393964A1 publication Critical patent/FR2393964A1/fr
Application granted granted Critical
Publication of FR2393964B1 publication Critical patent/FR2393964B1/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
    • F03B11/002—Injecting air or other fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
    • F03B11/04—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator for diminishing cavitation or vibration, e.g. balancing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/02—Influencing flow of fluids in pipes or conduits
    • F15D1/04—Arrangements of guide vanes in pipe elbows or duct bends; Construction of pipe conduit elements for elbows with respect to flow, e.g. for reducing losses of flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/02—Influencing flow of fluids in pipes or conduits
    • F15D1/06—Influencing flow of fluids in pipes or conduits by influencing the boundary layer
    • 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

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
FR777717499A 1977-06-08 1977-06-08 Procede pour la prevention de phenomenes destructifs lies a la cavitation Granted FR2393964A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR777717499A FR2393964A1 (fr) 1977-06-08 1977-06-08 Procede pour la prevention de phenomenes destructifs lies a la cavitation
IT23975/78A IT1094887B (it) 1977-06-08 1978-05-30 Procedimento per la prevenzione di fenomeni distruttivi legati alla catitazione
GB7826351A GB2000249B (en) 1977-06-08 1978-06-05 Method of preventing destructive phenomena connected with cavitation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR777717499A FR2393964A1 (fr) 1977-06-08 1977-06-08 Procede pour la prevention de phenomenes destructifs lies a la cavitation

Publications (2)

Publication Number Publication Date
FR2393964A1 true FR2393964A1 (fr) 1979-01-05
FR2393964B1 FR2393964B1 (it) 1980-01-04

Family

ID=9191824

Family Applications (1)

Application Number Title Priority Date Filing Date
FR777717499A Granted FR2393964A1 (fr) 1977-06-08 1977-06-08 Procede pour la prevention de phenomenes destructifs lies a la cavitation

Country Status (3)

Country Link
FR (1) FR2393964A1 (it)
GB (1) GB2000249B (it)
IT (1) IT1094887B (it)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106194768A (zh) * 2016-08-31 2016-12-07 徐州潜龙泵业有限公司 防气蚀屏蔽泵
CN106702993A (zh) * 2016-12-19 2017-05-24 水利部交通运输部国家能源局南京水利科学研究院 输水阀门顶止水防空化方法及结构布置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007218099A (ja) * 2006-02-14 2007-08-30 Tokyo Electric Power Co Inc:The 水車ランナおよび水車ランナシステム
GB2497763A (en) * 2011-12-20 2013-06-26 Ocean Flow Energy Ltd Air injection system for reducing hydrodynamic loads on water turbine blades
DE102016207977A1 (de) * 2016-05-10 2017-05-11 Voith Patent Gmbh Laufrad für eine hydraulische Maschine
CN108612678B (zh) * 2018-04-20 2020-01-10 浙江理工大学 一种适用于离心泵不同汽蚀区域的防汽蚀补气装置
CN114370547B (zh) * 2022-03-22 2022-05-31 潍柴动力股份有限公司 一种提升排气系统效率的排气管

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB291281A (en) * 1927-10-29 1928-05-31 William Lovis Improvements in or relating to ships' propellers
GB392895A (en) * 1930-08-27 1933-05-25 Francis Edward Colbert Improvements in screw propellers
GB400913A (en) * 1932-01-29 1933-11-02 Louis Jauch Improvements in hydraulic or aerial propellers or receivers
GB396716A (en) * 1932-02-08 1933-08-08 Edward Ernest Tully Improvements in or relating to ships' propellers
GB792243A (en) * 1953-08-27 1958-03-26 Commw Of Australia Control of boundary-layer flow
GB986797A (en) * 1960-04-09 1965-03-24 Hussein Haekal Improvements in and relating to machines comprising a bladed rotor such as water turbines and pumps
GB997943A (en) * 1961-05-19 1965-07-14 Hovercraft Dev Ltd Fluid curtains for protecting or shielding a body
GB1153137A (en) * 1965-08-31 1969-05-21 Hovercraft Dev Ltd Cycloidal Propeller
US3467043A (en) * 1966-11-18 1969-09-16 Bowles Eng Corp Pure fluid force generator
NO132423C (it) * 1973-12-04 1975-11-12 Norges Skipsforsknings Inst

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106194768A (zh) * 2016-08-31 2016-12-07 徐州潜龙泵业有限公司 防气蚀屏蔽泵
CN106702993A (zh) * 2016-12-19 2017-05-24 水利部交通运输部国家能源局南京水利科学研究院 输水阀门顶止水防空化方法及结构布置

Also Published As

Publication number Publication date
GB2000249A (en) 1979-01-04
IT7823975A0 (it) 1978-05-30
FR2393964B1 (it) 1980-01-04
GB2000249B (en) 1982-02-03
IT1094887B (it) 1985-08-10

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Legal Events

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