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GB2000249A - Method of preventing destructive phenomena connected with cavitation - Google Patents

Method of preventing destructive phenomena connected with cavitation

Info

Publication number
GB2000249A
GB2000249A GB7826351A GB7826351A GB2000249A GB 2000249 A GB2000249 A GB 2000249A GB 7826351 A GB7826351 A GB 7826351A GB 7826351 A GB7826351 A GB 7826351A GB 2000249 A GB2000249 A GB 2000249A
Authority
GB
United Kingdom
Prior art keywords
cavitation
preventing destructive
destructive phenomena
phenomena connected
pockets
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
GB7826351A
Other versions
GB2000249B (en
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.)
Alstom 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
Publication of GB2000249A publication Critical patent/GB2000249A/en
Application granted granted Critical
Publication of GB2000249B publication Critical patent/GB2000249B/en
Expired 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)

Abstract

The destructive action (13) of pockets of cavitation (2, 3) collapsing against the wall (11) of a hydraulic component (1) which is subjected to a fluid flow (F) is prevented by injecting a small quantity of incondensible gas through the wall (11) into the pockets of cavitation (2). <IMAGE>
GB7826351A 1977-06-08 1978-06-05 Method of preventing destructive phenomena connected with cavitation Expired GB2000249B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR777717499A FR2393964A1 (en) 1977-06-08 1977-06-08 METHOD FOR PREVENTING DESTRUCTIVE PHENOMENA RELATED TO CAVITATION

Publications (2)

Publication Number Publication Date
GB2000249A true GB2000249A (en) 1979-01-04
GB2000249B GB2000249B (en) 1982-02-03

Family

ID=9191824

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7826351A Expired GB2000249B (en) 1977-06-08 1978-06-05 Method of preventing destructive phenomena connected with cavitation

Country Status (3)

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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007218099A (en) * 2006-02-14 2007-08-30 Tokyo Electric Power Co Inc:The Turbine runner and turbine runner system
WO2013093452A1 (en) * 2011-12-20 2013-06-27 Ocean Flow Energy Limited System for reducing hydrodynamic loads on turbine blades in flowing water
DE102016207977A1 (en) * 2016-05-10 2017-05-11 Voith Patent Gmbh Impeller for a hydraulic machine
CN108612678A (en) * 2018-04-20 2018-10-02 浙江理工大学 A kind of anti-cavitation making-up air device suitable for centrifugal pump difference cavitation zone
CN114370547A (en) * 2022-03-22 2022-04-19 潍柴动力股份有限公司 Exhaust pipe for improving efficiency of exhaust system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106194768B (en) * 2016-08-31 2018-08-10 徐州潜龙泵业有限公司 Cavitation-preventive canned motor pump
CN106702993B (en) * 2016-12-19 2019-01-18 水利部交通运输部国家能源局南京水利科学研究院 The anti-cavitation method of water-delivery valve top sealing

Citations (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
GB396716A (en) * 1932-02-08 1933-08-08 Edward Ernest Tully Improvements in or relating to ships' propellers
GB400913A (en) * 1932-01-29 1933-11-02 Louis Jauch Improvements in hydraulic or aerial propellers or receivers
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
GB1170359A (en) * 1966-11-18 1969-11-12 Bowles Eng Corp A Fluid-Operated Fluid-Flow Control Device
GB1485515A (en) * 1973-12-04 1977-09-14 Norges Skipsforskningsinst Method and means to prevent cavitation erosion in propeller ducts

Patent Citations (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
GB1170359A (en) * 1966-11-18 1969-11-12 Bowles Eng Corp A Fluid-Operated Fluid-Flow Control Device
GB1485515A (en) * 1973-12-04 1977-09-14 Norges Skipsforskningsinst Method and means to prevent cavitation erosion in propeller ducts

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007218099A (en) * 2006-02-14 2007-08-30 Tokyo Electric Power Co Inc:The Turbine runner and turbine runner system
WO2013093452A1 (en) * 2011-12-20 2013-06-27 Ocean Flow Energy Limited System for reducing hydrodynamic loads on turbine blades in flowing water
GB2499700B (en) * 2011-12-20 2017-12-13 Ocean Flow Energy Ltd System for reducing hydrodynamic loads on turbine blades in flowing water
DE102016207977A1 (en) * 2016-05-10 2017-05-11 Voith Patent Gmbh Impeller for a hydraulic machine
CN108612678A (en) * 2018-04-20 2018-10-02 浙江理工大学 A kind of anti-cavitation making-up air device suitable for centrifugal pump difference cavitation zone
CN114370547A (en) * 2022-03-22 2022-04-19 潍柴动力股份有限公司 Exhaust pipe for improving efficiency of exhaust system

Also Published As

Publication number Publication date
FR2393964B1 (en) 1980-01-04
FR2393964A1 (en) 1979-01-05
IT1094887B (en) 1985-08-10
GB2000249B (en) 1982-02-03
IT7823975A0 (en) 1978-05-30

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Legal Events

Date Code Title Description
PG Patent granted