US3535540A - Hydroelectric bulb type set having a heat expansion compensator for the upstream support - Google Patents

Hydroelectric bulb type set having a heat expansion compensator for the upstream support Download PDF

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Publication number
US3535540A
US3535540A US793445*[A US3535540DA US3535540A US 3535540 A US3535540 A US 3535540A US 3535540D A US3535540D A US 3535540DA US 3535540 A US3535540 A US 3535540A
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US
United States
Prior art keywords
compensator
hydroelectric
spider
upstream
support
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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 - Lifetime
Application number
US793445*[A
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English (en)
Inventor
Charles Boulogne
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.)
CREUSOT FORGES ATELIERS
FORGES ET ATELIERS DU CREUSOT SOC
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CREUSOT FORGES ATELIERS
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Publication of US3535540A publication Critical patent/US3535540A/en
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Expired - Lifetime legal-status Critical Current

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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
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/10—Submerged units incorporating electric generators or motors
    • F03B13/105—Bulb groups
    • 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

  • the hydroelectric set which has a downstream support in the form of a front distributor, comprises an upstream support comprising: radial struts which bear the support spider of the upstream bearing of the set and which can absorb axial move ments thereof by bending or oscillating; and at least two rigid arms which are anchored in the concrete of the pipeline and which bear the ogive of the set; and an expansion compensator in the form of an axially deformable hermetic equal ring connects the ogive to the upstream bearing support spider.
  • This invention relates to a hydroelectric bulb type set having a heat expansion compensator for the upstream support.
  • the bulb part is usually borne by two supports disposed one downstream of and the other upstream of the alternator.
  • the downstream support usually takes the form of the combined blades and cross-members of the front distributor, such blades being secured to the concrete with the interposition of a sealing ring; in such cases the blades are required to withstand on their own (or possibly in combination with struts or other elements which bear some of the vertical loads rigidly while being flexible axially) the axial hydraulic forces and the hydraulic and electrical torques of the set.
  • the upstream support usually takes the form either of a single horizontal or vertical arm or of two arms in a cross, which are rigidly sealed in the concrete to give a hermetic connection between the same and the arm or arms.
  • These arms although not essential for axial retention of the set, are usually designed so that access can be had through them to the set interior and demountable elements of the set, such as parts of the thrust bearing and the alternator busbars, can be passed through; the arms also act as a store for minor accessories and for the oil storage pans of the set.
  • the arm dimensions are therefore such that the section modulus of the upstream support is of the same order of magnitude as for the downstream support, and so the two supports cannot be dissociated for calculations of axial load distribution, more particularly of forces arising from heat expansion of the alternator.
  • a hydroelectric bulb type set comprising a downstream support 'ice in the form of a front distributor, an upstream support comprising radical struts which bear the support spider of the upstream bearing of the set and which can absorb axial movements thereof by bending or oscillating, at least two rigid arms which are anchored in the concrete of the pipeline and which bear the ogive of the set, and an expansion compensator in the form of an axially deformable helmetic metal ring connecting the ogive to the upstream bearing support spider.
  • FIG. 1 is a diagrammatic overall view of a bulb set having an expansion compensator
  • FIG. 2 is a sectioned view to an enlarged scale showing assembly details of the expansion compensator
  • FIG. 3 is a view similar to FIG. 1 showing an alternative form of heat compensator assembly
  • FIG. 4 shows the annular cross-section of the expansion compensator inserted between the ogive and the upstream bearing support spider.
  • FIG. 1 shows a bulb set having an alternator with a self-cooling carcass; the downstream support for the set comprises in known manner combined blades and cross-members 1a of a front distributor 1 rigidly anchored by way of its outer ring 1b in the concrete.
  • the upstream end of the alternator carcass 2 is borne by struts 3 which form the upstream bearing for vertical loads.
  • the struts 3, which are disposed between a spider 4 bearing the upstream bearing and the concrete, are anchored therein and can be rocked by slight axial movements of the set.
  • Ogive 5 of the set is borne by a number of rigid arms 6 in the form of streamlined box members anchored hermeticallyin the concrete.
  • the dimensions of the arms 6 are such as to give access to the set, to enable parts to be dismantled to be passed through and to receive the usual accessories.
  • an annular expansion compensator 7 Disposed between ogive 5 and spider 4 is an annular expansion compensator 7 enabling the bulb to be moved axially as a result of heat expansion of the alternator carcass 2.
  • compensator 7 has a U-shaped cross-section having plane annular surfaces 7a bearing on a flange 5a rigidly secured to ogive 5 and on a flange 4a of spider 4, securing being by screws or bolts 8 and sealing-tightness being ensured by gaskets 10. Disposed around compensator 7 is a cover 11 which is secured to spider 4 and which provides continuous hydraulic streamlining and protects the compensator.
  • compensator 7 shown in FIG. 3 enables the alternator to be removed through an aperture 12 above the set (FIG. 1) in the top of the pipeline.
  • the compensator 7 and spider flange 4a are assembled together with the interposition of a multi-element ring or crown 13.
  • the spider 4 can be moved axially until flange 4a abuts ogive flange 5a, so that between alternator 2 and spider 4 a space is left which is equal to the length of the compensator and which enables the same to be released from its downstream support for removal through aperture 12.
  • the compensator comprises an axially flexible annular metal diaphragm 7' welded at its central aperture to a ring 7 'a and by its periphery to a ring 7b.
  • Ring Ta is secured by screws 13 to a flange 14 securel by screws 15 to an annular partition 4'a of spider 4, sealing-tightness being provided by gaskets 16, 17.
  • Ring 7'b is secured by screws 18 to a flange 5'a of ogive 5 with the interposition of a gasket 19.
  • An axially deformable gasket 20 around the periphery of ring 7'b seals off a bore 4b in spider 4.
  • diaphragm 7' helps to absorb the heat expansion likely in a bulb set having an alternator with a self-cooling carcass.
  • the presence of the gasket 20 keeps the hydraulic pressure upstream of the set from acting on diaphragm 7; the passage 22, by removing possible leaks and decompressing chamber 21, precludes the build-up of any hydraulic or pneumatic pressure in the chamber 21. Also, the state of gasket 20 can be checked at any time by inspecting the leaks removed through passage 22. In the event of the diaphragm rupturing, the gasket 20 limits leakage flow.
  • the compensator can be moved axially downstream, and the flange 14 can be moved axially upstream, into the positions shown in chain-dotted lines, for repairs to all the gaskets 1 6, 17, 19, 20, without dismantling any other parts of the set.
  • a hydroelectric bulb type set comprising a downstream front distributor, a support for said front distributor, an alternator carcass upstream of said front distributor, an alternator in said carcass, an upstream support for said carcass including radial struts, a support spider for said carcass supported by said struts, said strut absorbing axial movements of said carcass by bending or oscillating, an ogive upstream of said spider, at least two rigid arms anchored in the concrete oi the pipeline supporting said ogive and an expansion compensator including an axially deformable hermetic metal ring connecting said ogive to said spider.
  • said compensator including a U-section metal ring, two arms for said ring hermetically secured to two flanges, said flanges being rigidlysecured one to said ogive and the other to said spider.
  • a compensator as set forth in claim 4 said inner ring of said diaphragm being secured to said annular partition of said spider by a releasable flange whereby said compensator can be moved downstream for access to said gaskets.

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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)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Mounting And Adjusting Of Optical Elements (AREA)
US793445*[A 1968-02-01 1969-06-23 Hydroelectric bulb type set having a heat expansion compensator for the upstream support Expired - Lifetime US3535540A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR138298 1968-02-01
FR147678A FR94654E (fr) 1968-02-01 1968-04-10 Compensateur des dilatations thermiques, pour support amont de groupes hydro-électriques du type bulbe.

Publications (1)

Publication Number Publication Date
US3535540A true US3535540A (en) 1970-10-20

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ID=26181766

Family Applications (1)

Application Number Title Priority Date Filing Date
US793445*[A Expired - Lifetime US3535540A (en) 1968-02-01 1969-06-23 Hydroelectric bulb type set having a heat expansion compensator for the upstream support

Country Status (4)

Country Link
US (1) US3535540A (fr)
ES (1) ES361747A1 (fr)
FR (1) FR94654E (fr)
SE (1) SE341890B (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3939357A (en) * 1972-11-03 1976-02-17 Vereinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft Power plant
US4102599A (en) * 1976-04-13 1978-07-25 Verinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft Turbine-generator assembly, installation and housing
US4191504A (en) * 1976-11-02 1980-03-04 Vereinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft Duct-mounted turbine and method of installing the same
US4395198A (en) * 1981-12-07 1983-07-26 Allis-Chalmers Corporation Continuous twin-stay columns for bulb hydraulic turbines
US4511308A (en) * 1980-12-03 1985-04-16 James Howden Australia Pty. Limited Axial and mixed flow fans and blowers
US4940387A (en) * 1988-05-11 1990-07-10 Colin Horne Water turbine arrangement for power generation
US5108258A (en) * 1989-04-26 1992-04-28 Gec Alsthom Sa System for supporting the rotor in an axial exhaust turbine with an exhaust end bearing having isotropic stiffness and directly connected to a foundation
WO1999039098A1 (fr) * 1998-01-28 1999-08-05 Abb Azipod Oy Ensemble turbine hydraulique
US6146096A (en) * 1996-09-10 2000-11-14 Va Tech Voest Mce Gmbh & Co Bulb turbine system
WO2003054386A1 (fr) * 2001-12-12 2003-07-03 Aloys Wobben Tube d'ecoulement dote d'une turbine a eau de section variable
US20040219015A1 (en) * 2001-12-07 2004-11-04 Va Tech Hydro Gmbh & Co. Device and method for the generation of electrical energy

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2748715A (en) * 1952-12-20 1956-06-05 Borg Warner Hydrodynamic coupling
US3358440A (en) * 1965-12-06 1967-12-19 Gen Electric Flexible support means for gas turbine powerplants
US3403889A (en) * 1966-04-07 1968-10-01 Gen Electric Frame assembly having low thermal stresses

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2748715A (en) * 1952-12-20 1956-06-05 Borg Warner Hydrodynamic coupling
US3358440A (en) * 1965-12-06 1967-12-19 Gen Electric Flexible support means for gas turbine powerplants
US3403889A (en) * 1966-04-07 1968-10-01 Gen Electric Frame assembly having low thermal stresses

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3939357A (en) * 1972-11-03 1976-02-17 Vereinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft Power plant
US4102599A (en) * 1976-04-13 1978-07-25 Verinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft Turbine-generator assembly, installation and housing
US4191504A (en) * 1976-11-02 1980-03-04 Vereinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktiengesellschaft Duct-mounted turbine and method of installing the same
US4511308A (en) * 1980-12-03 1985-04-16 James Howden Australia Pty. Limited Axial and mixed flow fans and blowers
US4395198A (en) * 1981-12-07 1983-07-26 Allis-Chalmers Corporation Continuous twin-stay columns for bulb hydraulic turbines
US4940387A (en) * 1988-05-11 1990-07-10 Colin Horne Water turbine arrangement for power generation
US5108258A (en) * 1989-04-26 1992-04-28 Gec Alsthom Sa System for supporting the rotor in an axial exhaust turbine with an exhaust end bearing having isotropic stiffness and directly connected to a foundation
US6146096A (en) * 1996-09-10 2000-11-14 Va Tech Voest Mce Gmbh & Co Bulb turbine system
WO1999039098A1 (fr) * 1998-01-28 1999-08-05 Abb Azipod Oy Ensemble turbine hydraulique
US6641327B1 (en) 1998-01-28 2003-11-04 Abb Oy Water turbine arrangement
US20040219015A1 (en) * 2001-12-07 2004-11-04 Va Tech Hydro Gmbh & Co. Device and method for the generation of electrical energy
US7372172B2 (en) * 2001-12-07 2008-05-13 Va Tech Hydro Gmbh Device and method for the generation of electrical energy
WO2003054386A1 (fr) * 2001-12-12 2003-07-03 Aloys Wobben Tube d'ecoulement dote d'une turbine a eau de section variable
US20050069413A1 (en) * 2001-12-12 2005-03-31 Aloys Wobben Flow pipe comprising a water turbine having a variable cross-section
US7083377B2 (en) 2001-12-12 2006-08-01 Aloys Wobben System and method and for use in hydroelectric power station and hydroelectric power station employing same

Also Published As

Publication number Publication date
DE1815471B2 (de) 1972-08-17
SE341890B (fr) 1972-01-17
DE1815471A1 (de) 1969-08-21
ES361747A1 (es) 1970-12-01
FR94654E (fr) 1969-10-03

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