FR2230227A5 - Hydraulic turbine with reduced starting torque - reduced torque is produced by an induced air bubble in the suction line - Google Patents

Hydraulic turbine with reduced starting torque - reduced torque is produced by an induced air bubble in the suction line

Info

Publication number
FR2230227A5
FR2230227A5 FR7317705A FR7317705A FR2230227A5 FR 2230227 A5 FR2230227 A5 FR 2230227A5 FR 7317705 A FR7317705 A FR 7317705A FR 7317705 A FR7317705 A FR 7317705A FR 2230227 A5 FR2230227 A5 FR 2230227A5
Authority
FR
France
Prior art keywords
reduced
torque
air bubble
pump
produced
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.)
Expired
Application number
FR7317705A
Other languages
French (fr)
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.)
Neyrpic Creusot Loire SARL
Original Assignee
Neyrpic Creusot Loire SARL
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 Neyrpic Creusot Loire SARL filed Critical Neyrpic Creusot Loire SARL
Priority to FR7317705A priority Critical patent/FR2230227A5/en
Application granted granted Critical
Publication of FR2230227A5 publication Critical patent/FR2230227A5/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
    • F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/02—Machines or engines of reaction type; Parts or details peculiar thereto with radial flow at high-pressure side and axial flow at low-pressure side of rotors, e.g. Francis turbines
    • 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
    • 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)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Motor And Converter Starters (AREA)
  • Control Of Water Turbines (AREA)

Abstract

The device applies to hydro electric drives which are normally started as a motor driven pump set. The generator is running as a motor and the turbine as a pump. The set is then normally started against a closed valve with a fully submerged pump. The set is switched to a hydroelectric generator set when the units are up to speed. The starting torque is reduced by injecting a supply of air into the pump inlet which reduces the load on the impeller. The air bubble is of such a size as to remain stable during the acceleration of the set. This air settles over the hub of the impeller so as to become most effective when the set is at 80-90% of synchronous speed.
FR7317705A 1973-05-16 1973-05-16 Hydraulic turbine with reduced starting torque - reduced torque is produced by an induced air bubble in the suction line Expired FR2230227A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7317705A FR2230227A5 (en) 1973-05-16 1973-05-16 Hydraulic turbine with reduced starting torque - reduced torque is produced by an induced air bubble in the suction line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7317705A FR2230227A5 (en) 1973-05-16 1973-05-16 Hydraulic turbine with reduced starting torque - reduced torque is produced by an induced air bubble in the suction line

Publications (1)

Publication Number Publication Date
FR2230227A5 true FR2230227A5 (en) 1974-12-13

Family

ID=9119408

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7317705A Expired FR2230227A5 (en) 1973-05-16 1973-05-16 Hydraulic turbine with reduced starting torque - reduced torque is produced by an induced air bubble in the suction line

Country Status (1)

Country Link
FR (1) FR2230227A5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0389726A1 (en) * 1989-03-27 1990-10-03 John Jacob Geffs Aparatus and method for reducing effects of draft tube pressure fluctuations

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0389726A1 (en) * 1989-03-27 1990-10-03 John Jacob Geffs Aparatus and method for reducing effects of draft tube pressure fluctuations

Similar Documents

Publication Publication Date Title
ES8501491A1 (en) Generating power from wind.
SE7408282L (en)
GB1443335A (en) Electrical power generating plant
FR2230227A5 (en) Hydraulic turbine with reduced starting torque - reduced torque is produced by an induced air bubble in the suction line
GB1478728A (en) Hydraulic machine having anti-syphon arrangement
GB1063581A (en) Rotary pumps, blowers and motors
GB1083208A (en) Improvements in or relating to rotary hydraulic pumps
FR2371585A1 (en) Turbine power output enhancement method - has pump which accelerates flow of fluid supplied to turbine
ES366033A1 (en) Improvements in or relating to internal combustion engines
FR2252768A5 (en) Rotary motor with oil driven turbine - supplies electricity to drive pump which supplies oil to turbine
FR2295261A1 (en) Vehicle propulsion device with drive motor - has centrifugal hydraulic pump forcing fluid against reaction casing
GB1525342A (en) Motor-pump device and a method of lifting a liquid
GB934364A (en) Flow machine operable alternatively as a pump and as a turbine
FR2302422A1 (en) Pneumatic motor driven by atmospheric air - uses shaft driven fans and two turbine sets fed from pressure air reservoir
GB1030940A (en) Centrifugal fire-fighting pump mounted on an automotive vehicle
GB1116155A (en) Power plants for driving helicopter rotors
FR2404124A1 (en) Generator and store for energy from wind power - uses battery of air compressors connected to battery of reservoirs
GB862498A (en) Hydraulic storage power stations
FR2250897A1 (en) Gas turbine and coupled compressor plant - has synchronous generator and adjustable compressor stages
GB218388A (en) Improvements in and connected with submersible motor pumps
Denton Irrigation pumping with grand coulee power
FR2235830A1 (en) Wind powered surface water pleasure craft - wind driven turbine charges battery while stationary
FR2384670A1 (en) Wind driven propulsion system for ship - has windmill-driven pump supplying fluid to hydraulic motors which drive propellers with different characteristics
Grigor'ev et al. Study of Pressure Pulsations in the Flow Channel of the Krasnoiarsk Hydroelectric Power Station Hydraulic Assembly Unit Model
NL7711485A (en) Wind driven electricity generator - has hydraulic pumps driven by wind wheel, in turn driving hydraulic motor driven generators selectively connected according to wind speed

Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse