WO1991000449A1 - Robinet papillion appareil et methode - Google Patents

Robinet papillion appareil et methode Download PDF

Info

Publication number
WO1991000449A1
WO1991000449A1 PCT/US1990/003179 US9003179W WO9100449A1 WO 1991000449 A1 WO1991000449 A1 WO 1991000449A1 US 9003179 W US9003179 W US 9003179W WO 9100449 A1 WO9100449 A1 WO 9100449A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve member
butterfly valve
duct
valve
aperture
Prior art date
Application number
PCT/US1990/003179
Other languages
English (en)
Inventor
Larry K. Ball
Marshall U. Hines
Original Assignee
Allied-Signal Inc.
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
Priority claimed from US07/422,380 external-priority patent/US4962783A/en
Application filed by Allied-Signal Inc. filed Critical Allied-Signal Inc.
Publication of WO1991000449A1 publication Critical patent/WO1991000449A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/222—Shaping of the valve member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/221—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves specially adapted operating means therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
    • F16K15/035—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member with a plurality of valve members

Definitions

  • coinventors named on this application are also coinventors on other related applications generally relating to butterfly valves (including Serial Nos. 5 374,897, filed 30 June, 1989 and 395,234, filed 17 August, 1989, and others to be identified), all cofiled or copending with the present application, and all assigned to Allied-Signal Inc.
  • the present invention relates generally to valve apparatus and methods. More particularly, the present invention relates to butterfly valve apparatus and methods wherein a duct defines a flow path for conveying a flow of fluid.
  • a plate-like valve member is pivotally disposed in the duct about a transverse axis, and is conformal at its outer periphery to the internal wall shape of the duct.
  • the valve member is pivotal between a first position transverse to the flow path and substantially sealingly engaging the duct wall to close fluid flow therein, and a second position spanning the flow path generally parallel therewith to allow and control the fluid flow therein.
  • a conventional butterfly valve is set forth, by United States Patent No. 3,971,414, issued 27 July 1976 to H. Illing.
  • the '414 patent also discusses the general state of the butterfly valve art prior to the invention by Illing.
  • the actuating torque required to rotate the valve member of a butterfly valve from its closed position to an open position may be reduced by utilizing an articulated valve member. That is, the plate like butterfly valve member includes a leading wing and a trailing wing with respect to fluid flow.
  • the leading wing of Illing's valve member is defined in part by a servo or spoiler tab which is carried by and pivotally movable relative to the remainder of the valve member.
  • valve member of a conventional butterfly valve must ordinarily achieve a sealing tight fit with the walls of the duct.
  • the plate-like butterfly valve member carries a seal member at the outer periphery thereof.
  • This seal member for example, a piston ring type, o-ring, or lip seal, is resiliently and sealingly engageable with the duct wall in the closed position of the valve member.
  • the plate-like valve member it is conventional for the plate-like valve member to be circumferentially continuous, and to be skewed slightly relative to the pivot shaft supporting the valve member.
  • the periphery of the valve member is disposed upstream of the shaft on one side and downstream of the shaft on the other to allow use of a circumferentially continuous sealing member at the periphery of the valve member.
  • the pivot shaft may transect the duct perpendicularly to the flow path, or be angulated relative to the latter.
  • the valve taught by the '414 patent does not permit use of a circumferentially continuous sealing member on the valve member periphery.
  • fluid pressure and flow forces acting on the plate-like butterfly valve member may be used to reduce or eliminate the opposing torque, or to effect pivotal movement of the valve member.
  • the present invention provides a duct for conveying a flow of fluid therein, a plate-like butterfly valve member freely pivotal about a transverse axis substantially bisecting said duct between a first position transverse to and closing said duct and a second position non-transverse or substantially parallel with said duqt to open fluid flow therein, said transverse pivot axis dividing said valve member into a pair of opposite butterfly valve member wings of substantially equal area, an upstream one of said pair of valve member wings with respect to pivotal movement of the latter from said first to said second position defining an aperture therethrough, valve means opening and closing said aperture in response to an actuation input, and actuator means carried upon said valve member for providing said actuation input to said valve means.
  • An advantage of the present invention is that it allows use of a circumferentially continuous sealing member on the plate-like valve member of the butterfly valve.
  • Another advantage of the present invention is the complete elimination of an externally mounted actuator. That is, a conventional valve actuator possibly mounted to the duct and providing torque to the plate-like valve member relative to the duct is not required with the present invention.
  • FIG. 1 depicts a longitudinal, and partially cross-sectional schematic view taken along lines 1-1 of FIG. 2, of a valve apparatus according to a preferred embodiment of the invention
  • FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. 1;
  • FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. 1;
  • FIG. 4 is a longitudinal partially cross-sectional view similar to FIG. 1, but showing parts of the valve apparatus in alternative operative positions.
  • a butterfly valve or valve device 10
  • a duct 12 having an elongate and circumferentially extending wall 14.
  • the wall 14 bounds a flow path 16 wherein is conveyed a flow of fluid, as is depicted by arrow 18.
  • a plate-like butterfly valve member 20 is freely pivotally disposed in the duct 12.
  • the latter In order to journal the valve member 20, the latter includes a shaft portion 22 which at one end is pivotally received into a recess of the wall 14 (not visible in the drawing Figures), and at the opposite end sealingly extends outwardly through a bore 24 defined by wall 14.
  • valve member 20 may conventionally include a circumferentially extending sealing member (not shown) carried at an outer peripheral surface 26 of the valve member.
  • This sealing member may be, for example, a piston ring type, an o-ring, or a lip seal type.
  • the valve member 20 and shaft 22 may be skewed so that the shaft lies downstream of the valve member at one side and upstream at the opposite side. This feature allows the sealing member to be circumferentially continuous and avoids interruption of the sealing member by the shaft portion 22.
  • these conventional design expedients of the butterfly valve art are not included by the schematic drawing Figures.
  • the valve member 20 defines a rectangular through aperture 28 in a leading wing 30 thereof.
  • an actuator 34 is disposed on the trailing wing 32 of the valve member 20, on the trailing wing 32 of the valve member 20, an actuator 34 is disposed.
  • the actuator 34 includes a housing 36 defining a bore 38 therein.
  • a piston member 40 having a head portion 42 and rod portion 44 is sealingly and reciprocably received in the bore 38.
  • the piston member 40 cooperates with housing 36 to define a pair of variable-volume cavities 46, 48 which expand and contract in opposition as the piston member reciprocates.
  • One of the cavities, 48 receives a coil compression spring 50 urging the piston member 40 upwardly to a first position, as depicted in FIG. 1.
  • the cavity 48 is also vented to the flow path 16 by a vent passage 52 defined by housing 36.
  • a passage 54 extends from chamber 46 through the housing 36 and valve member 20 including shaft portion 22 to open outwardly of the butterfly valve device 10.
  • a flexible conduit 56 connects to shaft portion 22 externally of the duct 12 and to passage 54 thereof to communicate pressurized fluid in and out of cavity 46, as is indicated by arrow 58.
  • a rolling valve mechanism carried by the valve member 20.
  • the valve mechanism 60 includes a roller member 62 about which a valve web 64 is receivable. On each side of the valve web 64, one of a pair of guide webs 66, 68 is wrapped on the roller member 62.
  • the valve web 64 and pair of guide webs 66, 68 are wrapped about roller member 62 in opposite directions and secured thereto at inner ends.
  • Each of the webs 64, 66, and 68 is secured to the valve member 20 at respective outer ends 70, 72, and 74 thereof.
  • a clevis member 76 is carried at a distal end of rod portion 44 and rotatably engages the roller member 62 at each end of the latter by means of axle pins 78, only one of which is visible in the Figures.
  • the valve member 20 in its first or closed position spans the flow path 16 to substantially prevent fluid flow therein. Because the leading wing 30 and trailing wing 32 of the valve member define substantially equal areas on opposite sides of the shaft 22, the fluid pressure forces on the valve member 20 are balanced. In fact, the balance of forces on a butterfly valve member are such that the valve member will seek its closed position in response to fluid static pressure forces. In the closed position of the butterfly valve member 20, the valve web 64 spans and closes the aperture 28.
  • a fluid pressure is provided to cavity 46 via the flexible conduit 56 and passage 54, recalling arrow 58.
  • This fluid pressure initially must be sufficient to overcome both the static preload of spring 50 and the static fluid pressure in duct 12 upstream of valve member 20.
  • application of sufficient fluid pressure to cavity 46 results in downward movement of piston member 40 and clevis 76 viewing the drawing Figures. Consequently, the roller member 62 rolls downwardly along valve member 20, rolling up the valve web 64 as it unrolls the two guide webs 66, 68.
  • valve web 64 is rolled up on roller member 62, it progressively uncovers the aperture 28 to allow fluid flow therethrough. Also, the balance of static pressure forces on valve member 20 is changed as the aperture 28 is progressively uncovered. That is, the effective area of the leading wing 30 is decreased while the trailing wing 30 remains of constant area. The result is a moment effective on the valve member 20 to pivot the latter counter clockwise from its position of FIG. 1 and toward a second or open position, as depicted in FIG. 4.
  • valve member 20 Consequent to opening of the valve member 20, fluid flows in the flow path 16 so that the freely pivotal valve member 20 responds not only to static fluid pressure forces, but also to fluid flow forces.
  • the valve member 20 may be considered somewhat like a weather vane pivoting toward or away from the oncoming fluid flow in response to the balance of moments effective thereon. It is easily appreciated that the fluid flow forces on leading wing 30 create a clockwise moment tending to close the valve member 20. The effective area of the leading wing 30 is controllable by the position of roller valve mechanism 60 and the degree to which aperture 28 is uncovered or obstructed. On the other hand, the fluid flow forces on trailing wing 32 tend to produce a counter clockwise movement toward opening of valve member 20. This opening movement is assisted by fluid drag effective on the housing 36 of the actuator 34, and also by an arcuate drag fence 80 disposed near the outer periphery of wing 32.
  • the angular position of the freely pivotal valve member 20, and, therefore, the fluid flow allowed in duct 12, is controlled by application of fluid pressure to cavity 46. Expansion and contraction of cavity 46 causes extension and retraction of piston member 44, carrying the clevis 76 and roller member 62 in translation. As the roller member 62 is translated across the face of valve member 20 it rolls up one of the valve web 64 or pair of guide webs 66, 68, while unrolling the other. Rolling up or unrolling of valve web 64 exposes or obstructs aperture 28 in leading wing 30. For each increment of opening of aperture 28 there is a corresponding angular position of valve member 20 determined by the balance of fluid dynamic moments effective thereon. Closing of the aperture 28 in response to the relief of fluid pressure from cavity 46 results in the valve member 20 returning to its position of FIG. 1, which is a stable position blocking the flow path 16 in response to static fluid pressure forces.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

Un robinet papillon (10) comprend un conduit (12) définissant une voie d'écoulement du fluide (16) et un disque de robinet (20) pivotant dans le conduit pour obturer ce dernier. Le disque du robinet (20) pivote vers une seconde position traversant le conduit (12) et s'etendant en parallèle avec la voie d'écoulement pour permettre l'écoulement du fluide. Des moyens (28, 34, 60) sont fournis pour modifier la surface efficace de distribution du disque du robinet (2) autour de son axe de pivotement (22) pour réaliser l'ouverture et la fermeture du robinet en fonction des forces de pression du fluide.
PCT/US1990/003179 1989-06-30 1990-06-05 Robinet papillion appareil et methode WO1991000449A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US37489789A 1989-06-30 1989-06-30
US374,897 1989-06-30
US422,380 1989-10-16
US07/422,380 US4962783A (en) 1989-10-16 1989-10-16 Butterfly valve apparatus and method

Publications (1)

Publication Number Publication Date
WO1991000449A1 true WO1991000449A1 (fr) 1991-01-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1990/003179 WO1991000449A1 (fr) 1989-06-30 1990-06-05 Robinet papillion appareil et methode

Country Status (1)

Country Link
WO (1) WO1991000449A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6802768B2 (en) 2002-05-22 2004-10-12 Delphi Technologies, Inc. Motorized HVAC AC valve
US20190321942A1 (en) * 2018-04-24 2019-10-24 Cold Jet, Llc Particle blast apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2796082A (en) * 1955-02-14 1957-06-18 Interstate Engineering Corp Pilot actuated butterfly valve
US3773077A (en) * 1972-01-17 1973-11-20 Barnebey Cheney Co Fluid flow control valves

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2796082A (en) * 1955-02-14 1957-06-18 Interstate Engineering Corp Pilot actuated butterfly valve
US3773077A (en) * 1972-01-17 1973-11-20 Barnebey Cheney Co Fluid flow control valves

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6802768B2 (en) 2002-05-22 2004-10-12 Delphi Technologies, Inc. Motorized HVAC AC valve
US20190321942A1 (en) * 2018-04-24 2019-10-24 Cold Jet, Llc Particle blast apparatus
US12036637B2 (en) * 2018-04-24 2024-07-16 Cold Jet, Llc Particle blast apparatus

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