US3642028A - Metering valves - Google Patents

Metering valves Download PDF

Info

Publication number
US3642028A
US3642028A US865318A US3642028DA US3642028A US 3642028 A US3642028 A US 3642028A US 865318 A US865318 A US 865318A US 3642028D A US3642028D A US 3642028DA US 3642028 A US3642028 A US 3642028A
Authority
US
United States
Prior art keywords
valve
control element
axis
sideplates
port
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
US865318A
Other languages
English (en)
Inventor
Raymond Evan Hufton
George Graham Morgan
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries 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 Lucas Industries Ltd filed Critical Lucas Industries Ltd
Application granted granted Critical
Publication of US3642028A publication Critical patent/US3642028A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/04—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members
    • F16K3/06—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86718—Dividing into parallel flow paths with recombining
    • Y10T137/86734—With metering feature

Definitions

  • a fluid control valve has its port formed as an array of holes arranged both in radial rows andarcuate rows relative to an axis.
  • a closure member has a platelike form and is displaceable about another axis by means of an actuator so as progressively to uncover the holes. The uncovering takes place as the actuator moves from a central position.
  • closure member is movable in either direction to uncover a respective one of the arrays.
  • closure member is moved in one direction to uncover a single array, irrespective of the movement of the actuator from a central position.
  • the axis of the closure member is adjustable relative to the port, so that a desired rate of uncovering may be obtained for a given rate of actuator movement.
  • This invention relates to fluid control valves.
  • a fluid control valve in accordance with the invention comprises a body having an inlet and an outlet, a control element of platelike form angularly movable about an axis, an actuating means for moving the said control element, an element formed with port means and with which the control element coacts, the arrangement being such that when the actuating means is in a midposition the port means is closed by the control element, movement of the actuating means in either direction beyond a respective predetermined position causes the port means progressively to be uncovered, and means for adjusting the position of the axis of the control element relative to the port means so as to vary the rate at which the said progressive uncovering occurs.
  • FIG. I is a longitudinal section through one embodiment of a valve
  • FIGS. 2 to 6 are fragmentary sections taken respectively on lines 2-2, 3-3, 44, 55 and 66 in FIG. 1;
  • FIG. 7 is a fragmentary section on line 7-7 in FIG. 2;
  • FIG. 8 is a fragmentary section on line 88 in FIG. 1 with some detail omitted;
  • FIG. 9 shows, somewhat diagrammatically a section through an alternative form of valve
  • FIG. 10 is a view on arrow 10 in FIG. 9 and with some parts removed;
  • FIG. 11 shows a valve port arrangement view in the direction of arrow 11 in FIG. 10;
  • FIGS. 12 to 14 show details ofthe valve in FIGS. 9 and 10.
  • the valve shown includes a body formed from two parts 10 and 11 to form a chamber 12.
  • This chamber 12 has an inlet 13 formed in the part 12 coaxially with a spindle l5 rotatably supported by the part 1 1.
  • the chamber 12 also has an outlet 14 in its wall.
  • the spindle 15 has an integral control element 16 which is shown in more detail in FIGS. 4 and 5.
  • the control element 16 is of disclike form, although it is cut away on one side of the spindle 15 to provide clearance from other parts of the valve to be hereinafter described.
  • the control element 16 which may, for example, conveniently be cast by the lost-wax process is formed with an internal cavity 17 which communicates with an inlet port 18 on the axis of the control element.
  • a bellows l9 sealingly mounted in the inlet 13 carries an annular sealing element 20 which is pressed against the control element around the port 18 to provide substantially fluidtight communication between the inlet 13 and the cavity 17.
  • the control element also has a pair of openings 21, 22 in its opposite faces which communicate with the cavity 17.
  • the opening 21 is in the face of the element 16 from which the spindle 15 extends. This opening is bounded by inner and outer arcuate edges 21a, 21b, of radii struck from the axis of the spindle 15, and radial edges 21c, 21d.
  • the edge 210 is spaced by 5 from a datum line 16a of the element 16 and the edges 21c, 21d are spaced by 45, the angles being those subtended at the axis of the element 16.
  • the opening 22 is of similar form, having arcuate edges 22a and 22b and radial edges 22c and 2211.
  • the edge 22c is 5 from the datum line 16a in the direction opposite the direction in which the edge 210 is spaced therefrom and the edges 22c and 22d are 45 apart.
  • the control element 16 is sandwiched between a pair of side plates 23, 24, the plate 23 lying against the face of the element 16 having the opening 21 and the plate 24 lying against the other face.
  • the plate 23 has port means constituted by an array of drillings 25 which extend from the face of the plate 23 lying against the plate 16 into a recess 26 in the opposite face of the plate 23. This recess 26 communicates with the outlet 14.
  • the drillings 25 are arranged in rows, which are radial with respect to an axis 23a lying at the center of a part-circular edge portion 23b of the plate, and in rows which extend in arcs about the axis 230.
  • the outermost arcuate row lies on a radius measured from the axis 230 less than the radius of the edge 21b of the opening 21 in the element 16.
  • the angular extent of the arcuate rows is 51.
  • the position of the holes 25 is such that, in the off position of the valve, as shown, the holes all lie on the side of a datum plane including the datum line 16a and the axis of spindle 15 opposite the side of this plane on which the opening 21 lies.
  • FIG. 2 indicates the position of the opening 21, relative to the drillings 25 when the valve is fully open in one direction.
  • the plate 24 is formed with a similar array of holes 27 opening into a recess 28 communicating with the outlet.
  • the radius of the outermost row of holes 27 is the same as that of the outermost row of holes 25 in plate 23.
  • the angular extent of the holes is 40. In the off position of the valve the holes 27 all lie on the side of the datum plane opposite the opening 22.
  • FIG. 3 indicates the position of opening 22 with the valve in its other fully open position.
  • each carrier plate is mounted in the housing for angular adjustment about the axis of spindle 15.
  • each carrier plate in the case shown, the carrier plate 29
  • Each sideplate 23, 24 is mounted on its associated carrier plate for rectilinear sliding movement in a direction perpendicular to the axis of the spindle 15.
  • each carrier plate has a cross-groove in which an integral tongue on the sideplate is engaged (see FIG. 8).
  • Each mechanism includes a screw 35a engaged with the body and screw-threadedly engaged with a nut 36 inside the chamber 12.
  • This nut 36 engages one end ofa spring 37 the other end of which is engaged in a cup-shaped member 38 having a peg 39 thereon and which gives friction loading to prevent movement of screw 35a by vibration.
  • This peg 39 extends into an arcuate slot 40 in a lug 41 on the associated sideplates 23 and 24.
  • each carrier plate 29, 30 are spring-loaded towards one another by means of compression springs 42 which are engaged between the body parts 10 and 11 and kidney-shaped recesses 43 in the plates 29, 30.
  • each carrier plate has a pair of kidney-shaped through holes 44 which receive circular pressure pads 45 (see FIG. 7) which are directly engaged with the sideplates 23, 24.
  • Each pad 45 is urged against the associated sideplate by a spring 46 and, additionally, by a bellows 47 which receives the same fluid pressure as that present at the inlet 13.
  • the spindle 15 has an external lever 4 secured to it.
  • the valve described is intended for use in an air circuit of a fuel control system for a gas turbine engine.
  • An air pressure signal is applied to this circuit and it is required to modify the air pressure in accordance with the angular position of the lever 4 which is coupled to the pilots throttle control.
  • the circuit is such that the ratio of the pressure applied to the circuit to the pressure in the inlet 13 of the valve remains constant over a range of 10 of movement of the lever 4 and increases linearly when the lever is moved in opposite directions beyond this range.
  • the valve described enables the end limits of the 10 range to be accurately set and also allows the slopes of the linear portions of the circuit characteristic to be accurately set.
  • Adjustment of the end limits is effected by angular displacement of the sideplates 23, 24 using the adjusting screws 32, 33. It will be appreciated that turning the control element in a clockwise direction as viewed in FIG. 4 will produce no efiect on flow through the valve until the opening 21 starts to uncover the holes 25. Angular adjustment of the sideplate 23 will thus vary one end limit of the range. Similarly angular adjustment of plate 24 varies the other end limit.
  • Characteristic slope variation is obtained by lateral adjustment of the sideplates 23 and 24 utilizing the screw mechanisms 34 and 35 respectively.
  • the angular extents of the arrays of holes 25, 27 are larger than the angular widths of the respective openings 21, 22 so that angular adjustment of the plates 23, 24 does not interfere with full opening of the valve.
  • valve arrangement shown in FIGS. 9 to 11 has a valve body 50 with an inlet comprising a fixed orifice 51. An outlet (not shown) is formed in the wall of the body 50.
  • a cam follower assembly 53 comprising a roller 54 carried on a wishbone-shaped structure 55. Also carried on the structure 55 are apair of opposed abutments 56, 57.
  • An extension 58 of the structure 55 carries a spring-loaded plunger 59.
  • the roller 54 engages a cam 60 which is mounted on a shaft 67 rotatable in the body 50.
  • the cam 60 is formed of three cam elements 68, 69, 70 shown in FIGS. 12 to 14.
  • the cam element 70 is secured to the shaft 67 and has a part circular periphery 70a having its center on the axis of the shaft 67.
  • Elements 68, 69 have respective through bores 68a, 69a and parts 68b, 69b of their peripheries formed to provide a constant rate of rise.
  • the respective parts 680, 690 of the elements 68, 69 are formed with a radius from the centers of the bores 68a, 690 which is less than the radius of the periphery 70a of the element 70.
  • the elements 68, 69, 70 are assembled together and secured in their required relative positions by means of dowels passing through holes 71.
  • the cam 60 thus has a dwell portion intermediate two constant-rise portions, and rotation of the cam 60 in either direction beyond the dwell portion will thus move the cam follower assembly 53 away from the shaft 67.
  • a lever assembly 61 is pivotally mounted on a stem 62 which is axially adjustable within the body 50.
  • the lever assembly 61 isengaged between the abutments 56, 57 on the cam follower assembly 53 and includes an arm 63 and a flexible support member 64.
  • Secured to the member 64 is a carrier 65 upon which is mounted a control element or blade 66 having a face lying against an adjacent portion of the body 50.
  • the blade 66 is urged into close contact with the body 50 by the plunger 59.
  • An adjustable abutment 72 on the arm 63 also engages the carrier 65.
  • the stem 62 is adjustable by means of a sleeve 73 threadedly engaged with the body 50, and may be secured by means of a locknut 74.
  • a bracket 75 is carried on the stem 62 and supports a spring assembly 76.
  • the spring assembly 76 engages an arm 77 which forms part of the lever assembly 61 and which rotates therewith.
  • the spring assembly 76 thus biases the lever assembly 61 in a clockwise direction as seen in FIG. 9, and via the abutment 57 urges the roller 54 against the cam 60.
  • an element 84 formed with a plurality of holes 78 which open into a chamber 79 within the body.
  • the chamber 79 communicates with the inlet 51.
  • the holes 78 are disposed, as shown in FIG. 11, in rows which are radial with respect to an axis 80 and which are also arranged in rows which extend in arcs about the axis 80.
  • the location of the axis 80 is such that it is coaxial with the pivot of the lever assembly 61 in the central position of the said pivot.
  • the holes 78 lie to one side of the datum line 81 which corresponds to a line passing along the edge of the blade 66 in a position of the blade 66 when the roller 54 is engaging the dwell portion of the cam 60.
  • the chamber 79 has a bleed orifice 82 controlled by a closure member in the form of a spring-loaded plunger 83.
  • the plunger 83 is actuable by an edge cam 84a which is rotatable in the body 50.
  • the last-described embodiment is also used to modify an air pressure signal for a gas turbine engine fuel control system.
  • the camshaft 67 is coupled to the pilots throttle control lever. Rotation of the cam 60 in either direction to lift the cam follower assembly 53 causes the abutment 57 to rotate the lever assembly 61 so as progressively to uncover the holes 78. Adjustment, by means of the sleeve 73 and stem 62, of the pivot position of the lever assembly 61 varies the distance between the said pivot and the abutment 57. Reduction of the said distance causes the blade 66 to have an increased displacement for a given displacement of the cam follower assembly 53. Increasing the said distance correspondingly reduces the displacement of the blade 66.
  • the rate at which the holes 78 are uncovered may, for a given rate of cam rotation, effectively be varied. Movement of the pivot of the lever assembly 61 does not affect the bias applied by the spring assembly 76, since the stem 62 moves the spring assembly 76 via the bracket 75.
  • a fluid control valve comprising a body having an inlet and an outlet, a control element of platelike form angularly movable about an axis, an actuating means on the body for moving the said control element, a ported element formed with port means and with which the control element coacts, means closing the valve when the actuating means is in a midposition, means moving in the actuating means in either direction beyond a respective predetermined position to open the port means progressively, and means adjusting the position of the axis of the control element relative to the port means so as to vary the rate at which the said progressive uncovering occurs.
  • a valve as claimed in claim 2 in which the said holes are disposed in rows extending in arcs about the said axis of the control element.
  • control element is of disclike form.
  • control element includes a passage by means of which the said opening communicates with the said inlet.
  • a valve as claimed in claim 6 in which the port means is formed in each of a pair of sideplates, the said sideplates being disposed on either side of the control element and in which the control element is formed with a pair of openings having a passage therebetween, each said opening being adapted to be aligned with the port means in a respective one of the sideplates.
  • a valve as claimed in claim 8 in which the sideplates have means for independent angular adjustment about the axis of the control element.
  • a valve as claimed in claim 8 in which the sideplates have means for independent rectilinear movement in a direction perpendicular to the axis of thecontrol element.
  • a valve as claimed in claim 8 in which the sideplates are urged towards each other by means of springs.
  • a valve as claimed in claim 13 in which the carrier plates have means urging them towards each other by means of springs.
  • control element is formed as a blade and is carried by a lever assembly, the pivot of the lever assembly forming the said axis of the control element.
  • a valve as claimed in claim 15 in which the said pivot is carried on a stem axially adjustable within the body.
  • a valve as claimed in claim 16 which includes a means for biasing the lever assembly in a direction to close the port means.
  • a valve as claimed in claim 15 in which the lever assembly is engaged by a cam follower assembly.
  • a valve as claimed in claim 20 in which the cam has a profile formed with a dwell portion intermediate two rise portions.
  • a valve as claimed in claim 19 which includes a means carried by the cam follower assembly for biasing the control element towards the element formed with port means.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Sliding Valves (AREA)
  • Multiple-Way Valves (AREA)
  • Chemical Vapour Deposition (AREA)
US865318A 1968-10-17 1969-10-10 Metering valves Expired - Lifetime US3642028A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB49332/68A GB1274676A (en) 1968-10-17 1968-10-17 Fluid control valves

Publications (1)

Publication Number Publication Date
US3642028A true US3642028A (en) 1972-02-15

Family

ID=10451993

Family Applications (1)

Application Number Title Priority Date Filing Date
US865318A Expired - Lifetime US3642028A (en) 1968-10-17 1969-10-10 Metering valves

Country Status (6)

Country Link
US (1) US3642028A (enrdf_load_stackoverflow)
JP (1) JPS4815660B1 (enrdf_load_stackoverflow)
DE (1) DE1952102C3 (enrdf_load_stackoverflow)
FR (1) FR2020931A1 (enrdf_load_stackoverflow)
GB (1) GB1274676A (enrdf_load_stackoverflow)
SE (1) SE345727B (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2334829A1 (fr) * 1975-12-08 1977-07-08 Gen Electric Clapet regulateur et de division de debit
RU2672365C1 (ru) * 2017-07-04 2018-11-14 Олег Марсович Гарипов Способ разработки нефтяной залежи на неустановившемся циклическом режиме закачки и устройство для его осуществления

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1582838A (en) 1976-08-18 1981-01-14 Lucas Industries Ltd Control valves for fluids
JPS5372256U (enrdf_load_stackoverflow) * 1976-11-18 1978-06-16
JPS54105065U (enrdf_load_stackoverflow) * 1978-01-09 1979-07-24
JPH066966U (ja) * 1992-06-30 1994-01-28 三菱アルミニウム株式会社 放熱用フィン

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB664189A (en) * 1949-02-15 1952-01-02 Trist & Co Ltd Ronald Improvements relating to valves
GB933234A (en) * 1958-12-13 1963-08-08 Voith Gmbh J M Improved valve suitable for use in fluid dosing or mixing apparatus
US3342449A (en) * 1964-02-25 1967-09-19 Petrol Injection Ltd Metering valves and control devices

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB664189A (en) * 1949-02-15 1952-01-02 Trist & Co Ltd Ronald Improvements relating to valves
GB933234A (en) * 1958-12-13 1963-08-08 Voith Gmbh J M Improved valve suitable for use in fluid dosing or mixing apparatus
US3342449A (en) * 1964-02-25 1967-09-19 Petrol Injection Ltd Metering valves and control devices

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2334829A1 (fr) * 1975-12-08 1977-07-08 Gen Electric Clapet regulateur et de division de debit
RU2672365C1 (ru) * 2017-07-04 2018-11-14 Олег Марсович Гарипов Способ разработки нефтяной залежи на неустановившемся циклическом режиме закачки и устройство для его осуществления

Also Published As

Publication number Publication date
JPS4815660B1 (enrdf_load_stackoverflow) 1973-05-16
FR2020931A1 (enrdf_load_stackoverflow) 1970-07-17
DE1952102C3 (de) 1974-06-27
SE345727B (enrdf_load_stackoverflow) 1972-06-05
DE1952102A1 (de) 1970-04-30
DE1952102B2 (de) 1973-11-29
GB1274676A (en) 1972-05-17

Similar Documents

Publication Publication Date Title
US7337805B2 (en) Valve with adjustable stop
JP2020085241A (ja) 流体バルブ
US6880572B2 (en) Exhaust gas control valve, apparatus and method of controlling exhaust gas flow
KR20080008272A (ko) 두 개의 드라이브를 구비한 셔틀 밸브
JPH10504875A (ja) 減衰器およびダイナミックシールを有する流体制御弁
US3539148A (en) Center pivoted butterfly dump valve
US3642028A (en) Metering valves
US3230971A (en) Self-indicating relief valve
US7017884B2 (en) Fluid metering valve
US3945764A (en) Variable displacement pump control assembly
US3272223A (en) Rotatable shutter valve
CN110094765A (zh) 用于燃气灶具的具有安全阀的燃气旋塞以及燃气灶具
US2030150A (en) Valve
US4293118A (en) Multi-function operator for control valve device
US20200041007A1 (en) Actuator and valve device using the same
US4301831A (en) Pressure regulating valve with differential pressure response
EP1323962B1 (en) Throttle valve and throttle
US3232310A (en) Pressure responsive valve
US3265000A (en) Fluid metering device
US3941513A (en) Variable displacement pump control assembly
US3463183A (en) Gas pressure regulator having adjustable laterally located clock-type biasing spring
US6962320B2 (en) Flow control device
US3701365A (en) Slide valve
US3277923A (en) Fluid pressure control
US3342449A (en) Metering valves and control devices