US3901624A - Integrated gate operating servomotor - Google Patents
Integrated gate operating servomotor Download PDFInfo
- Publication number
- US3901624A US3901624A US423543A US42354373A US3901624A US 3901624 A US3901624 A US 3901624A US 423543 A US423543 A US 423543A US 42354373 A US42354373 A US 42354373A US 3901624 A US3901624 A US 3901624A
- Authority
- US
- United States
- Prior art keywords
- pistons
- piston
- compartments
- head cover
- ring
- 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 - Lifetime
Links
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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
- F03B3/16—Stators
- F03B3/18—Stator blades; Guide conduits or vanes, e.g. adjustable
- F03B3/183—Adjustable vanes, e.g. wicket gates
-
- 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 output of certain types of hydraulic turbines such as for instance the Francis turbine is controlled by a series of wicket gates.
- the wicket gates are circumferentially spaced about the water inlet passageway to the turbine runner and are pivotal to different positions to control the amount of water flowing to the runner.
- An additional object of the subject invention is to provide a hydraulic turbine gate operating mechanism of the hereinbefore described type wherein torusshaped servomotor pistons are sealed between structural compartments in the head cover and connected to the wicket gates for pivotal control thereof.
- FIG. 1 is a vertical cross sectional view of a portion of a hydraulic turbine having a wicket gate operating mechanism constructed in accordance with this invention
- FIG. 2 is a partial plan view in section taken through the turbine head cover showing the sealing arrangement of the servomotor pistons
- FIG. 3 is a view taken in the direction of the line 111- III of FIG. 1;
- FIG. 4 is a cross sectional view taken along the line IV-IV of FIG. 2.
- a hydraulic turbine shown herein for purposes of illustration as a Francis turbine, includes a runner 6 supported for rotation by a shaft 7 and being open to a water passageway 8.
- the water passageway 8 is defined by a head cover generally designated 9 and a bottom ring 11.
- the head cover and bottom ring are in turn supported by a stay ring structure including upper and lower flanges l2 and 13, respectively, connected together by a plurality of circumferentially spaced stationary stay vanes 14.
- the stay ring is connected to a spiral case 16 both of which are embedded in the concrete foundation of the power house.
- the head cover is a fabricated member comprising upper and lower vertically spaced, horizontally disposed plate members 17 and 18, respectively, a pair of horizontally spaced cylindrical plate members 19 and 21 together with a plurality of circumferentially spaced radially disposed transverse rib members 22 which together form box sections or compartments of adequate strength and rigidity to withstand the pressures of the water in passageway 8 and the hydraulic load on the wicket gates generally designated 23.
- Conventional wicket gate construction includes a gate vane 24 and a gate stem 26.
- the stem 26 is rotatably supported in bushings 27, 28 and 30.
- Axial thrust of the gate vane is counteracted by the shoulder 29 on a lever 31 keyed to the free end of the gate stem 26.
- Conventional gland packing 31A is utilized to seal the wicket gate stem 26.
- openings 32 and 33 are provided through the ribs 34 and 36, respectively. These openings provide access between the box compartments which have the radial ribs 34 and 36 as a common wall.
- a pair of pistons 37 and 38 extend through the openings 32 and 33, respectively.
- the pistons may be connected together in any conventional manner and are herein shown connected together by a cross piece 39 which may be bolted or otherwise connected to each of the pistons 37 and 38.
- the cross piece 39 extends through an opening in the radial rib 41 and upward through an opening provided through the horizontal member 17 of the head cover.
- the pistons 37 and 38 are curved to correspond to the annular shape of the head cover so as to provide adequate stroke to operate the wicket gates through the gate ring and linkage.
- Sealing means are provided for each piston. These sealing means may be provided in any 8hventional manner and are herein shown as including a seal housing 42 consisting of a cover 44, barrel 45, and base ring 50 (best shown in FIG. 2) provided about each opening 32 and 33 and bolted or otherwise connected to the radial rib members 34 and 36, respectively. Liquid sealing means shown herein for purposes of illustration as chevron packing 43 are then provided around the pistons, and within the seal housing 42 to provide a fluid tight sliding fit therebetween. This packing is held in place by means of the ring cover 44 bolted or otherwise removably connected to the barrel 45 or radial ribs 34 and 36.
- compartments 46 and 47 behind the pistons 37 and 38, respectively, are liquid tight.
- Pressure fluid can be selectively admitted and exhausted from each of these compartments through the openings 48 provided through the outer cylindrical plate member 21 to cause reciprocating movement of the pistons.
- a flat circular gate operating ring 49 is attached to the cross piece 39 in any conventional manner such as by the bolts 51.
- This operating ring is slidably supported on the outer surface of the upper horizontal member 17 in any conventional manner such as by low friction pads 52.
- a link 53 is provided with one end pivotally connected to the operating ring 49 and its other end pivotally connected to the free end of the lever arm 54.
- the lever arm 54 is connected to lever 31 by means of a shear pin 56. In this manner, movement of the pistons 37 and 38 imparts movement to the ring 49 which in turn rotates the wicket gates 23 through the required angular movement.
- this arrangement utilizes conventional structural compartments in the head cover as the pressure vessels for the gate operating servomotors.
- this invention facilitates a less costly, more compact turbine structure and in many cases would permit closer coupling of the turbine and generator components further reducing equipment and power house cost.
- a hydraulic turbine having a runner comprising: a head cover constructed of upper and lower ring-like members connected together by a plurality of spaced substantially radially directed rib-like members defining a plurality of box-like liquid tight normal structural compartments; a bottom ring spaced from said head cover and defining therewith a water passageway leading to said runner; a plurality of pivotally supported circumferentially spaced wicket gates disposed across said water passageway; walls defining an opening through at least one of said rib-like members; a pressure fluid operated piston operatively associated with said opening seal means engaging said piston and the associated riblike member about said opening to provide a fluid tight sliding seal therebetween, said seal and piston defining with the associated compartment a fluid tight chamber on at least one side of said piston; means for providing pressure fluid to said chamber to cause movement of said piston; and means pivotally connecting said piston to said wicket gate to cause pivotal movement thereof upon movement of said piston.
- a hydraulic turbine having a runner comprising: a head cover constructed of upper and lower ring-like members connected together by a plurality of spaced substantially radially directed rib-like members defining a plurality of box-like liquid tight normal structural compartments; a bottom ring spaced from said head cover and defining therewith a water passageway leading to said runner; a plurality of pivotally supported circumferentially spaced wicket gates disposed across said water passageway; walls defining openings through at least two adjacent and facing rib-like members of said compartments; a pair of rigidly connected pressure fluid operated pistons contained within said openings; seal means connected to said adjacent walls about said openings and engaging said pistons to provide a fluid tight sliding seal therebetween, said pistons closing said openings and sealing the associated compartments behind said pistons; means providing pressure fluid to said associated compartments to cause movement of said pistons in one direction when said pressure fluid is delivered to one of said compartments; and means pivotally connecting said pistons to said wicket gates to cause pivotal movement thereof upon movement of said pistons
- pivotal means includes an operating ring slidably supported on said head cover, means connecting said ring to said piston and means pivotally connecting said ring to said wicket gates.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Turbines (AREA)
Abstract
Description
Claims (3)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US423543A US3901624A (en) | 1973-12-10 | 1973-12-10 | Integrated gate operating servomotor |
CA202,887A CA1017653A (en) | 1973-12-10 | 1974-06-19 | Integrated gate operating servomotor |
JP49141449A JPS5089730A (en) | 1973-12-10 | 1974-12-09 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US423543A US3901624A (en) | 1973-12-10 | 1973-12-10 | Integrated gate operating servomotor |
Publications (1)
Publication Number | Publication Date |
---|---|
US3901624A true US3901624A (en) | 1975-08-26 |
Family
ID=23679266
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US423543A Expired - Lifetime US3901624A (en) | 1973-12-10 | 1973-12-10 | Integrated gate operating servomotor |
Country Status (3)
Country | Link |
---|---|
US (1) | US3901624A (en) |
JP (1) | JPS5089730A (en) |
CA (1) | CA1017653A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4210408A (en) * | 1978-10-30 | 1980-07-01 | Allis-Chalmers Corporation | Eccentric pin positive locking device for hydraulic turbine wicket gates |
US4575307A (en) * | 1982-12-10 | 1986-03-11 | Hitachi, Ltd. | Guide vane operating mechanism for hydraulic machine |
US20040101401A1 (en) * | 2002-11-25 | 2004-05-27 | Gerler Timothy David | Electromagnetic coupling device for control of hydraulic turbines |
EP1536133A1 (en) * | 2003-11-26 | 2005-06-01 | GE Energy (Sweden) AB | Torque limiting wicket gate operating mechanism for a water turbine |
US20170260959A1 (en) * | 2014-12-01 | 2017-09-14 | Voith Patent Gmbh | Hydraulic turbomachine |
CN111496479A (en) * | 2020-04-29 | 2020-08-07 | 哈尔滨电机厂有限责任公司 | Machining method for bottom ring of large hydroelectric generating set |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5544093U (en) * | 1979-09-19 | 1980-03-22 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2082927A (en) * | 1935-09-23 | 1937-06-08 | William M White | Hydraulic turbine |
US2671635A (en) * | 1950-05-25 | 1954-03-09 | Baldwin Lima Hamilton Corp | Reversible pump-turbine |
US2746713A (en) * | 1950-08-04 | 1956-05-22 | Neyrpic Ets | Distributor vane operating apparatus for hydraulic turbines |
US3081975A (en) * | 1959-03-26 | 1963-03-19 | Dominion Eng Works Ltd | Seals for turbines and pumps |
US3236500A (en) * | 1961-12-09 | 1966-02-22 | Geratebau Eberspacher Ohg | Turbine |
-
1973
- 1973-12-10 US US423543A patent/US3901624A/en not_active Expired - Lifetime
-
1974
- 1974-06-19 CA CA202,887A patent/CA1017653A/en not_active Expired
- 1974-12-09 JP JP49141449A patent/JPS5089730A/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2082927A (en) * | 1935-09-23 | 1937-06-08 | William M White | Hydraulic turbine |
US2671635A (en) * | 1950-05-25 | 1954-03-09 | Baldwin Lima Hamilton Corp | Reversible pump-turbine |
US2746713A (en) * | 1950-08-04 | 1956-05-22 | Neyrpic Ets | Distributor vane operating apparatus for hydraulic turbines |
US3081975A (en) * | 1959-03-26 | 1963-03-19 | Dominion Eng Works Ltd | Seals for turbines and pumps |
US3236500A (en) * | 1961-12-09 | 1966-02-22 | Geratebau Eberspacher Ohg | Turbine |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4210408A (en) * | 1978-10-30 | 1980-07-01 | Allis-Chalmers Corporation | Eccentric pin positive locking device for hydraulic turbine wicket gates |
US4575307A (en) * | 1982-12-10 | 1986-03-11 | Hitachi, Ltd. | Guide vane operating mechanism for hydraulic machine |
US20040101401A1 (en) * | 2002-11-25 | 2004-05-27 | Gerler Timothy David | Electromagnetic coupling device for control of hydraulic turbines |
EP1536133A1 (en) * | 2003-11-26 | 2005-06-01 | GE Energy (Sweden) AB | Torque limiting wicket gate operating mechanism for a water turbine |
US20170260959A1 (en) * | 2014-12-01 | 2017-09-14 | Voith Patent Gmbh | Hydraulic turbomachine |
CN111496479A (en) * | 2020-04-29 | 2020-08-07 | 哈尔滨电机厂有限责任公司 | Machining method for bottom ring of large hydroelectric generating set |
Also Published As
Publication number | Publication date |
---|---|
JPS5089730A (en) | 1975-07-18 |
CA1017653A (en) | 1977-09-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: WOODS KATHLEEN D., AS TRUSTEE Free format text: SECURITY INTEREST;ASSIGNOR:ALLIS-CHALMERS CORPORATION A DE CORP.;REEL/FRAME:004149/0001 Effective date: 19830329 Owner name: CONNECTICUT NATIONAL BANK THE, A NATIONAL BANKING Free format text: SECURITY INTEREST;ASSIGNOR:ALLIS-CHALMERS CORPORATION A DE CORP.;REEL/FRAME:004149/0001 Effective date: 19830329 |
|
AS | Assignment |
Owner name: ALLIS-CHALMERS HYDRO, INC., A DE CORP Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. SUBJECT TO CONDITIONS RECITED;ASSIGNOR:ALLIS-CHALMERS CORPORATION;REEL/FRAME:004431/0128 Effective date: 19850626 |
|
AS | Assignment |
Owner name: VOITH HYDRO, INC., A CORP OF DE. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ALLIS-CHALMERS HYDRO, INC.;REEL/FRAME:004683/0922 Effective date: 19860925 |
|
AS | Assignment |
Owner name: ALLIS-CHALMERS CORPORATION Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:CONNECTICUT NATIONAL BANK, THE;REEL/FRAME:004684/0746 Effective date: 19870325 |