US3174720A - Seal for rotary hydraulic machine - Google Patents

Seal for rotary hydraulic machine Download PDF

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Publication number
US3174720A
US3174720A US286646A US28664663A US3174720A US 3174720 A US3174720 A US 3174720A US 286646 A US286646 A US 286646A US 28664663 A US28664663 A US 28664663A US 3174720 A US3174720 A US 3174720A
Authority
US
United States
Prior art keywords
lower shroud
seal
low pressure
pressure edge
annular
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
Application number
US286646A
Other languages
English (en)
Inventor
Robert S Sproule
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.)
Dominion Engineering Works Ltd
Original Assignee
Dominion Engineering Works Ltd
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 Dominion Engineering Works Ltd filed Critical Dominion Engineering Works Ltd
Priority to US286646A priority Critical patent/US3174720A/en
Priority to GB18147/64A priority patent/GB1048152A/en
Priority to CH618864A priority patent/CH411745A/de
Priority to LU46222D priority patent/LU46222A1/xx
Priority to SE6694/64A priority patent/SE303114B/xx
Priority to DE19641503254 priority patent/DE1503254A1/de
Priority to NO153591A priority patent/NO117848B/no
Application granted granted Critical
Publication of US3174720A publication Critical patent/US3174720A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F03B11/006—Sealing arrangements
    • 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
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y10S415/91—Reversible between pump and motor use

Definitions

  • Another object of the invention is to provide a new and improved seal which, though not requiring impractically small running clearances, prevents escape of air.
  • Another object of the invention is to provide a new and improved seal which utilizes centrifugal separation of air and the working fluid to prevent escape of the air.
  • FIG. 1 is a vertical diametral sectional view of a Francis turbine or pump-turbine.
  • FIG. 2 is a fragmentary sectional view of the circled portion of FIG. 1, showing the preferred execution of the invention.
  • FIG. 3 is a fragmentary sectional view of the circled portion of FIG. 1 showing an alternative execution of the invention in which upward movement of the rotor is less restricted than in the execution according to FIG. 2.
  • FIG. 4 is a fragmentary sectional view of the circled portion of FIG. 1 showing an alternative execution of the invention in which a beveled construction is employed in the upper part of the seal assembly in place of the stepped construction shown in FIGS. 2 and 3.
  • FIG. 5 is a fragmentary sectional view of the circled portion of FIG. 1 showing an alternative execution of the invention in which a combination of beveled and stepped construction is employed.
  • FIG. 6 is a fragmentary sectional view of the circled portion of FIG. 1 showing an alternative execution of the invention in which a fully beveled construction of the sealing surfaces is employed;
  • FIG. 7 is a fragmentary sectional view of the circled portion of FIG. 1 showing an alternative execution of the invention in which the beveled construction of FIG. 4 is employed in a construction which eliminates a separate rotor seal member.
  • FIG. 2 illustrates in detail the seal and adjacent portions of runner 13, lower cover 19 and base ring 32.
  • the runner shown generally at 13, is provided with rotary seal ring 20 mounted on the lower part of runner band 29, and is located within bore 21 of lower cover 19.
  • Annular space 23 is the radial clearance between the periphery of seal ring 20 and bore 21.
  • Annular space 22, of lesser diameter than annular space 23 is the radial clearance between bore 27 of static seal ring 34 and the periphery 28 of runner band 29.
  • annular space 25 bounded by horizontal face 39 of static seal ring 34 and horizontal face 31 of rotary seal ring 20 connects annular spaces 22 and 23-.
  • the cross-section of annular space 25 is characterized by the axial dimension being smaller than the radial dimension.
  • Annular groove 26 is formed in bore 21 of lower cover 19 intermediate of its upper and lower extremities. Ducts 24 supply water to groove 26 at a pressure greater than the pressure in space 18.
  • annular space 25 has a significant radial dimension and since rotation is imparted, by rotary seal ring 20, to any fluid or fluids contained therein, centrifugal separation of fluids of different densities, such as air and water, is effected, whereby a standing water seal is set up in the outer region of space 25 which prevents escape of the air from space 18.
  • the bore 27b of static seal ring 34b is shown bevelled so as to provide an annular space 25b between horizontal face 31b of the rotary seal ring 25b and bore 27b, extending at an angle to the axis of rotation.
  • the lower cover 19c is provided with a bevelled bore 270 and a stepped horizontal face 30c.
  • the bevelled bore 270 is shown substantially parallel to the periphery 280 of the runner band 29 and the stepped face 300 is substantially parallel to the horizontal face 310 of the runner band, thereby providing annular spaces 23c and 250.
  • FIG. 6 a fully bevelled bore 27d is shown opposite to the periphery 28d of the runner band 29 thereby providing an annular space 25d between the band and the static seal ring 340'.
  • a rotary hydraulic machine comprising a stationary housing, a rotating member, said member comprising spaced axially upper and lower shrouds having blades secured therebetween, and defining a fluid flow channel, said lower shroud having a high pressure edge at a large diameter than the low pressure edge, said sta tionary housing having a portion surrounding said high pressure edge of said lower.
  • said stationary housing having a second portion extending from said first portion toward said low pressure edge of said lower shroud and spaced therefrom to define an an nular space between said lower shroud and the stationary housing, sealing means between the lower shroud adjacent its low pressure edge and the second portion of the stat-iffy structure extending toward the low pressure edge, said sealing means between said lower'shroud and the second portion of said stationary structure comprising a pair of seal elements, one of said pair of seal elements being replaceable and carried by the second portion of the stationary structure adjacent the annular space and cooperating with said stationary structure to define one side of an annular recess in said second portion of said sta-' tionary structure, the second of said seal elements defining the low pressure edge of said lower shroud and having an annular outward projection thereon extending into said annular recess and overlapping said first seal element, means for injecting high pressure air into the annular space between the lower shroud and the second portion of the stationary housing,
  • a rotary hydraulic machine as claimed in claim 1 in which said means to inject a high pressure liquid lubricant into said annular recess comprises an annular groove in the stationary structure communicating with said annular recess, and supplied with liquid lubricant by means of a plurality of ducts extending through the stationary structure into said annular groove.
  • a rotary hydraulic machine as claimed in claim 1 in which said means to inject a high pressure liquid lubricant into said annular recess comprises an annular groove in the stationary structure communicating with said annular recess, and duct means to supply liquid lubricant to the annular groove to maintain the pressure in the annular recess higher than the pressure in said annular space.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Turbines (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
US286646A 1963-06-10 1963-06-10 Seal for rotary hydraulic machine Expired - Lifetime US3174720A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US286646A US3174720A (en) 1963-06-10 1963-06-10 Seal for rotary hydraulic machine
GB18147/64A GB1048152A (en) 1963-06-10 1964-05-01 Improvements in or relating to rotary hydraulic machines such as turbines, pumps, and reversible pump-turbines
CH618864A CH411745A (de) 1963-06-10 1964-05-11 Hydraulische Turbomaschine
LU46222D LU46222A1 (enrdf_load_stackoverflow) 1963-06-10 1964-06-02
SE6694/64A SE303114B (enrdf_load_stackoverflow) 1963-06-10 1964-06-02
DE19641503254 DE1503254A1 (de) 1963-06-10 1964-06-05 Dichtung fuer hydraulische Turbomaschinen
NO153591A NO117848B (enrdf_load_stackoverflow) 1963-06-10 1964-06-09

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US286646A US3174720A (en) 1963-06-10 1963-06-10 Seal for rotary hydraulic machine

Publications (1)

Publication Number Publication Date
US3174720A true US3174720A (en) 1965-03-23

Family

ID=23099535

Family Applications (1)

Application Number Title Priority Date Filing Date
US286646A Expired - Lifetime US3174720A (en) 1963-06-10 1963-06-10 Seal for rotary hydraulic machine

Country Status (7)

Country Link
US (1) US3174720A (enrdf_load_stackoverflow)
CH (1) CH411745A (enrdf_load_stackoverflow)
DE (1) DE1503254A1 (enrdf_load_stackoverflow)
GB (1) GB1048152A (enrdf_load_stackoverflow)
LU (1) LU46222A1 (enrdf_load_stackoverflow)
NO (1) NO117848B (enrdf_load_stackoverflow)
SE (1) SE303114B (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3405913A (en) * 1967-12-04 1968-10-15 Dominion Eng Works Ltd Rotary seal structure
US3923417A (en) * 1974-12-30 1975-12-02 Allis Chalmers Hydraulic turbine spiral case drain
US4158525A (en) * 1977-01-31 1979-06-19 Tokyo Shibaura Denki Kabushiki Kaisha Method of and apparatus for operating pump turbine
US4198063A (en) * 1977-10-06 1980-04-15 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Shaft sealing device for turbocharger
US4439107A (en) * 1982-09-16 1984-03-27 United Technologies Corporation Rotor blade cooling air chamber
US11566595B2 (en) * 2020-01-06 2023-01-31 Kabushiki Kaisha Toshiba Francis-type turbine runner and Francis-type turbine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3113273A1 (de) * 1981-04-02 1982-10-21 Klein, Schanzlin & Becker Ag, 6710 Frankenthal Kreiselmaschine
USD370880S (en) 1994-11-08 1996-06-18 The Goodyear Tire & Rubber Company Tread for a tire

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1516822A (en) * 1924-11-25 mccormack
DE592528C (de) * 1934-02-08 J M Voith Maschinenfabrik Anordnung zum Schmieren und Kuehlen der Spaltringe von Kreiselmaschinen im Leerlauf
US2109679A (en) * 1936-04-13 1938-03-01 Sr Aloys Neveling Sealing device for pumps
DE714290C (de) * 1940-03-18 1941-11-26 Escher Wyss Maschinenfabrik G Mit Fluessigkeit arbeitende ein- oder mehrstufige Kreiselmaschine
FR1059878A (fr) * 1951-11-05 1954-03-29 Usines De Const Mecaniques Ehr Système d'étanchéité contre l'eau provenant d'interstices pour des pompes centrifuges

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1516822A (en) * 1924-11-25 mccormack
DE592528C (de) * 1934-02-08 J M Voith Maschinenfabrik Anordnung zum Schmieren und Kuehlen der Spaltringe von Kreiselmaschinen im Leerlauf
US2109679A (en) * 1936-04-13 1938-03-01 Sr Aloys Neveling Sealing device for pumps
DE714290C (de) * 1940-03-18 1941-11-26 Escher Wyss Maschinenfabrik G Mit Fluessigkeit arbeitende ein- oder mehrstufige Kreiselmaschine
FR1059878A (fr) * 1951-11-05 1954-03-29 Usines De Const Mecaniques Ehr Système d'étanchéité contre l'eau provenant d'interstices pour des pompes centrifuges

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3405913A (en) * 1967-12-04 1968-10-15 Dominion Eng Works Ltd Rotary seal structure
US3923417A (en) * 1974-12-30 1975-12-02 Allis Chalmers Hydraulic turbine spiral case drain
US4158525A (en) * 1977-01-31 1979-06-19 Tokyo Shibaura Denki Kabushiki Kaisha Method of and apparatus for operating pump turbine
US4198063A (en) * 1977-10-06 1980-04-15 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Shaft sealing device for turbocharger
US4439107A (en) * 1982-09-16 1984-03-27 United Technologies Corporation Rotor blade cooling air chamber
US11566595B2 (en) * 2020-01-06 2023-01-31 Kabushiki Kaisha Toshiba Francis-type turbine runner and Francis-type turbine

Also Published As

Publication number Publication date
LU46222A1 (enrdf_load_stackoverflow) 1965-12-03
NO117848B (enrdf_load_stackoverflow) 1969-09-29
DE1503254A1 (de) 1970-09-17
GB1048152A (en) 1966-11-09
CH411745A (de) 1966-04-15
SE303114B (enrdf_load_stackoverflow) 1968-08-12

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