US3245497A - Lubricating device for hydraulic machines having an adjustable-blade runner - Google Patents

Lubricating device for hydraulic machines having an adjustable-blade runner Download PDF

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Publication number
US3245497A
US3245497A US321733A US32173363A US3245497A US 3245497 A US3245497 A US 3245497A US 321733 A US321733 A US 321733A US 32173363 A US32173363 A US 32173363A US 3245497 A US3245497 A US 3245497A
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United States
Prior art keywords
piston
bearings
runner
oil
pressure
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Expired - Lifetime
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US321733A
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English (en)
Inventor
Yokoi Nobuyasu
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Hitachi Ltd
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Hitachi Ltd
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Publication date
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    • 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
    • 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
    • F03B3/12—Blades; Blade-carrying rotors
    • F03B3/14—Rotors having adjustable blades
    • 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

Definitions

  • This invention relates to hydraulic machines having an adjustable-blade runner and particularly to lubrication of the interior of the runner hub and prevention of water penetration therein.
  • Hydraulic machines such as Kaplan turbines having a runner continuously submerged in water generally have the cavity or interior space of the runner hub pressurized with packing means arranged between the runner hub and those relatively movable parts thereon exposed directly to water for the purpose of preventing water penetration into the cavity in the runner hub.
  • One previous method of pressurizing the hub cavity has been to direct the pressure oil into the hub cavtiy from the pressure chamber on one side of the control piston of the servo motor which is arranged in the runner for blade adjustment.
  • An alternative method has been to employ a pressure source separately arranged for introducing an appropriate pres sure into the hub cavity.
  • the primary object of the present invention is to provide an improved lubricating device for a hydraulic machine of the type including an adjustable-blade runner with a servo motor operable to adjust the pitch of the runner blades and having an oil passage forconnecting the oil pressure fed to the servo motor with an inner cavity formed in the runnerhub portion, the oil passage being formed so as to communicate with the pressure chambers of the servo motor on both sides of the piston arranged therein.
  • Another object of the present invention is to provide a lubricating device of the character described which comprises an oil discharge opening formed in the top portion of the runner hub to allow the pressure oil fed through the oil passage into the runner hub to be returned therefrom to an appropriate oil collector tank.
  • the inventive device is economical because there is no need for any separate pressure source.
  • the inventive arrangement further including an oil discharge opening formed in the top of the runner hub for permitting the pressure oil fed into the hub to be returned therefrom to an approprite oil collector tank, is effective to lubricate the shifting mechanism in the runner hub including link, levers, etc.
  • the arrangement is advantageous from an economic standpoint since the oil discharged is returned to the oil collector tank for reuse.
  • FIG. 1 is a fragmentary vertical cross section of one embodiment of the invention as applied to the runner of a Kaplan turbine;
  • FIG. 2 is an enlarged fragmentary view of the pressure oil intake section in FIG. 1.
  • reference numeral 1 designates a servo motor arranged in the top portion of the runner hub 2 and including a piston 3 arranged therein.
  • a pressure oil inlet device 6 is arranged on top of the turbine shaft 45 for forcing oil under pressure into the servo motor 1 and includes inlet chambers 7 and 8.
  • Reference numeral 9 designates an oil reservoir for collecting oil, which has served to lubricate and pressurize the interior of the runner hub 2 and an appropriate oil collecting tank (not shown) is provided to receive oil from the oil reservoir 9 through a conduit 24.
  • Pressure oil conduits 10 and 11 are arranged in the hollow turbine shaft 4-5 to direct the pressure oil fed 'into the inlet chambers 7 and 8 to the servo motor 1.
  • the pressure oil from the conduit 26 entering the oil pressure inlet chamber 7 is applied through the inlet 7a to a pressure oil tube 10.
  • the pressure oil entering the utbe 10 passes to the lower chamber of the servo motor through a hole 3a and is effective to produce a raising of the piston 3.
  • the pressure oil from a conduit 25 entering the oil-pressure inlet chamber 8 is applied to the pressure oil tube 11.
  • the pressure oil entering the tube 11 passes to the upper chamber of the servo motor and is effective to drive the piston in a downward direction.
  • the runner hub 2 defines a major cavity A' therein and an oil discharge conduit 12 is formed in the turbine shaft 4-5 and connected with an oil passage 23 extending through the walls of the runner hub 2 and the bottom portion of turbine shaft 4-5 for the purpose of directing the oil fed into the turbine hub for lubrication and pressurization thereof upwardly into the oil reservoir9.
  • a pair of pressure oil intake pieces 13 and 14 are fitted in the opposite surfaces of the piston 3 and each have a through aperture having a limited diameter so as to permit passage of fluid while substantially maintaining the pressure differential on the piston 3. As shown, the through apertures are in communication with an oil passage 15 extending through the piston 3 and in parallel with the opposite surfaces thereof.
  • Anoperating rod 16 is mounted in the runner hub 2 for actuating the runner blades 19 and connected at one end with the motor piston 3 and at the other end with a mechanism for operating the runner blades 19.
  • Formed in the operating rod 16 is a passageway 17 communicating at one end 'with the oil passage 15 formedin the motor piston and at the other end ,with an inner or central cavity 18 formed in the runner hub 2.
  • a passageway 20 is formed through the boss portion B of each of the runner blades 19 to permit the pressure oil from the cavity 18 to flow through said passageway onto the surface of the blade boss portion B for the purpose of lubricating bearing bushings 21 and 22, which are arranged in the runner hub to support the runner blade.
  • the oil pressure from the inlet chambers 7 and 8 is directed through conduits 10 and 11 to enter the servo motor 1 in the runner hub and through the intake pieces 13 and 14 flows into the oil passage 15.
  • the oil further flows through passage 17 formed in the blade operating rod 16 to collect in the inner cavity '18 formed in the runner hub 2.
  • the oil from the inner cavity flows through passageways 20 to enter the oil grooves formed in the surfaces of the blade boss portions B to lubricate the areas of contact between the bushings 21 and 22, and the blade bosses supported therein. Thereafter, the oil is collected in the major cavity A in the runner hub 2 and together with leakage oil from the inner cavity 18 lubricates the blade-operating mechanism in the major cavity A including links, levers, etc.
  • the lubricating oil then flows upwardly through the oil passage 23 formed in the walls of the runner hub 2 and the bottom portion of the hollow turbine shaft 4 and through the annular space between the 'oil conduit 11 and shaft 4-5 into the oil reservoir 9 and further through conduit 24 to the oil collector tank not shown.
  • a hydraulic turbine of the type having runner blades adjustably supported in bearings within a runner hub and a servo motor for adjusting said runner blades including a fluid actuated piston and actuating shaft interconnected with said runner blades so that longitudinal movement of said piston produces coordinate rotation of said blades, the improvement essentially consisting of a lubrication system for said bearings comprising,
  • said further means including reservoir means between said fluid passage means and said bearings for providing continuous pressure to said bearings.
  • a hydraulic turbine of the type having runner blades adjustably supported in bearings Within a runner hub and a servo motor for adjusting said runner blades including a fluid actuated piston and actuating shaft interconnected -with said runner blades so that longitudinal movement of said piston produces coordinate rotation of said blades, the improvement essentially consisting of a lubrication system for said bearings comprising,
  • said further means including reservoir means between said fluid passage means and said bearings for providing continuous pressure to said bearings and channel means passing through said actuating shaft between said fluid passage means and said reservoir means.
  • said further means including reservoir means between said fluid passage means and said bearings for pro viding continuous pressure to said bearings and channel means passing through said actuating shaft between said fluid passage means and said reservoir means,
  • said fluid passage means including a pair of intakes on opposing sides of said piston and having restricted apertures therein, said restricted apertures being interconnected by a larger bore.
  • said fluid passage means including a pair of intakes on opposing sides of said piston and having restricted apertures therein, said restricted apertures being interconnected by a larger bore,

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Turbines (AREA)
  • Hydraulic Motors (AREA)
US321733A 1962-11-07 1963-11-06 Lubricating device for hydraulic machines having an adjustable-blade runner Expired - Lifetime US3245497A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6598362 1962-11-07

Publications (1)

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US3245497A true US3245497A (en) 1966-04-12

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Application Number Title Priority Date Filing Date
US321733A Expired - Lifetime US3245497A (en) 1962-11-07 1963-11-06 Lubricating device for hydraulic machines having an adjustable-blade runner

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US (1) US3245497A (de)
CH (1) CH407008A (de)
GB (1) GB1048576A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3367424A (en) * 1967-04-07 1968-02-06 Hitachi Ltd Hydraulic machine having adjustable blade runner
US3801219A (en) * 1971-05-05 1974-04-02 Jerome A Gross Controllable pitch maripropeller
US4046486A (en) * 1974-07-08 1977-09-06 Turbo-Lufttechnik Gmbh Lubrication of fan blade bearings
US4474533A (en) * 1981-02-23 1984-10-02 Kawasaki Jukogyo Kabushiki Kaisha Controllable pitch propeller assembly
US4545734A (en) * 1982-07-20 1985-10-08 J. M. Voith Gmbh Axial flow machine, particularly a blower, with adjustable rotor blades

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE506369C2 (sv) * 1996-04-29 1997-12-08 Kvaerner Turbin Ab Anordning vid hydraulmaskin
CN104791187B (zh) * 2015-04-08 2017-07-25 武汉四创自动控制技术有限责任公司 能实现健康状态预测的水轮机调节系统及方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1510436A (en) * 1923-03-14 1924-09-30 Englesson John Elov Hub for impellers with turnable vanes
US2244479A (en) * 1940-11-18 1941-06-03 Albert F Anderson Antiswirl device
US2283128A (en) * 1940-06-13 1942-05-12 Allis Chalmers Mfg Co Turbine lubrication
US2518925A (en) * 1946-04-30 1950-08-15 Hydro Mecanique Turbine
US3138362A (en) * 1964-01-07 1964-06-23 Dominion Eng Works Ltd Kaplan turbines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1510436A (en) * 1923-03-14 1924-09-30 Englesson John Elov Hub for impellers with turnable vanes
US2283128A (en) * 1940-06-13 1942-05-12 Allis Chalmers Mfg Co Turbine lubrication
US2244479A (en) * 1940-11-18 1941-06-03 Albert F Anderson Antiswirl device
US2518925A (en) * 1946-04-30 1950-08-15 Hydro Mecanique Turbine
US3138362A (en) * 1964-01-07 1964-06-23 Dominion Eng Works Ltd Kaplan turbines

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3367424A (en) * 1967-04-07 1968-02-06 Hitachi Ltd Hydraulic machine having adjustable blade runner
US3801219A (en) * 1971-05-05 1974-04-02 Jerome A Gross Controllable pitch maripropeller
US4046486A (en) * 1974-07-08 1977-09-06 Turbo-Lufttechnik Gmbh Lubrication of fan blade bearings
US4474533A (en) * 1981-02-23 1984-10-02 Kawasaki Jukogyo Kabushiki Kaisha Controllable pitch propeller assembly
US4545734A (en) * 1982-07-20 1985-10-08 J. M. Voith Gmbh Axial flow machine, particularly a blower, with adjustable rotor blades

Also Published As

Publication number Publication date
CH407008A (de) 1966-01-31
GB1048576A (en) 1966-11-16

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