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WO2004008009A1 - Ensemble de commande de debit - Google Patents

Ensemble de commande de debit Download PDF

Info

Publication number
WO2004008009A1
WO2004008009A1 PCT/GB2003/002970 GB0302970W WO2004008009A1 WO 2004008009 A1 WO2004008009 A1 WO 2004008009A1 GB 0302970 W GB0302970 W GB 0302970W WO 2004008009 A1 WO2004008009 A1 WO 2004008009A1
Authority
WO
WIPO (PCT)
Prior art keywords
flow control
seat member
control assembly
assembly according
passage
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.)
Ceased
Application number
PCT/GB2003/002970
Other languages
English (en)
Inventor
Frederick Philip Selwyn
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AU2003254439A priority Critical patent/AU2003254439A1/en
Publication of WO2004008009A1 publication Critical patent/WO2004008009A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/141—Check valves with flexible valve members the closure elements not being fixed to the valve body
    • F16K15/142—Check valves with flexible valve members the closure elements not being fixed to the valve body the closure elements being shaped as solids of revolution, e.g. toroidal or cylindrical rings

Definitions

  • This invention relates to assemblies for controlling the flow of fluid (e.g. water) which can be used in various applications as explained further herein.
  • fluid e.g. water
  • Conventional flow control assemblies may utilise various forms of flow control element, some of which may be of a relatively high mass.
  • the mass of the element may prevent the assembly from exhibiting the desired control characteristics.
  • flow control assemblies in the form of diaphragm valves tend to suffer from distortion of the valve element with time so that they eventually cease to operate effectively. Such failure can be a considerable inconvenience, for example, when the assembly is installed in water supply system in a remote location.
  • the present invention seeks to provide a new and inventive form of flow control assembly which utilises a relatively low mass control element, has low friction and relatively few moving parts, and is capable of providing reliable service over a considerable period.
  • the present invention provides a flow control assembly which includes:
  • conduit having an internal passage leading from a fluid inlet to a fluid outlet, the internal surface of the passage having retaining means extending around the periphery of the passage;
  • control element in the form of a resilient obturator ring which is located by said retaining means in such a way as to possess limited freedom of movement in the direction of fluid flow through the passage;
  • a seat member providing at least one control opening through which fluid may pass from the inlet to the outlet and which is held in the passage in cooperation with the obturator ring such that movement of the ring can open and close said opening or openings under the influence of fluid flowing through the passage.
  • the assembly lies in a non-return valve, where fluid flowing in one direction through the passage causes the obturator ring to block the opening or openings while flow in the opposite direction moves the ring away from the opening or openings.
  • the arrangement may be such that the obturator ring normally blocks the opening or openings, i.e. the valve is normally closed.
  • the assembly may alternatively be arranged such that the opening or openings can only be blocked upon movement of the ring, i.e. the valve is normally open.
  • a second use of the assembly lies in fluid pressure amplifiers.
  • the obturator ring is held such that the opening or openings are normally open. Provided the flow of fluid is in the correct direction and of sufficient magnitude, the ring will oscillate to alternately block and unblock the opening or openings resulting in a pulsed increase in fluid pressure within the conduit.
  • Such a pulsed increased pressure can be utilised in various ways. For example, if a high pressure outlet is provided upstream of the obturator ring the assembly can be used as a fluid-driven pump. Also, by providing a restricted bypass passageway which bypasses the control opening or openings the pressure of fluid leaving the fluid outlet may be increased in a pulsed manner, thus forming a high pressure jet outlet rather than a steady flow.
  • Figure 1 is a longitudinal section through a flow control assembly in accordance with the invention in the form of a non-return valve;
  • Figure 2 is an elevation of a seat member of the non-return valve looking from the upstream direction;
  • Figure 3 is a longitudinal section through another flow control assembly in accordance with the invention in the form of a fluid pressure amplifier
  • Figure 4 is a front view of the seat member used in the amplifier of Figure 3;
  • FIG. 5 is a longitudinal section through another form of fluid pressure amplifier in accordance with the invention.
  • Figure 6 is a longitudinal section through a modified form of the fluid pressure amplifier shown in Fig. 5;
  • Figure 7 is an external view of the fluid pressure amplifier of Fig. 6;
  • Figure 8 is a longitudinal section through a further modification to the fluid pressure amplifier of Fig. 5;
  • Fig. 9 is an elevation of the obturator ring used in the flow control assemblies.
  • the non-return valve assembly includes a pipe 1 having an inlet end 2 and an outlet end 3.
  • An annular recess 4 is formed in the pipe wall extending around the internal surface of the pipe, to receive a resilient obturator ring 5.
  • the pipe 1 contains a disc-shaped seat member 6 which is fixed in the pipe, and the upstream face of the seat member contains a shallow circular groove 7 of concave cross-section forming a seat for the ring 5.
  • a number of axial flow control apertures 8 are arranged around the periphery of the member 6 within the groove 7. When the valve is at rest the obturator ring is located adjacent to the seat 6.
  • the recess 4 can be arranged to hold the ring away from the seat member 6, but in a normally-closed valve as shown, the ring is held against the seat. Fluid flowing through the inlet 2 causes the ring 5 to move away from the seat member, either by a rolling action, by general distortion of the resilient ring or by movement of the ring within the recess 4, depending on the required design characteristics of the valve. Fluid flow in the opposite direction will sealably urge the obturator ring against the seat member, blocking the apertures 8 and preventing such reverse flow.
  • Fig.s 3 and 4 show a fluid pressure amplifier which includes a pipe 11 having an inlet end 12 and an outlet end 13.
  • An annular recess 14 is formed in the pipe wall extending around the internal surface of the pipe, to receive a resilient obturator ring 15.
  • a disc-shaped seat member 16 is fixed in the pipe.
  • the upstream face 17 of the seat member 16 is formed with a shallow conical shape, the peripheral region of which forms a seat for the ring 15.
  • An annular gap or flow control opening 18 is formed between the peripheral edge of the seat member 16 and the wall of the pipe 11 , determined by radial projections 19 at the periphery of the seat member.
  • a restricted bypass passageway 20 also extends axially through the centre of the seat member 16.
  • Fig. 5 shows another form of fluid pressure amplifier which includes a pipe 21 having an inlet end 22 and an outlet end 23.
  • An annular recess 24 is formed in the pipe wall extending around the internal surface of the pipe, to receive a resilient obturator ring 25.
  • a spider member 26 is fixed in the pipe 21 downstream of the ring 25.
  • the spider member has a central internally threaded hole 27 surrounded by a number of flow ports 28.
  • a seat member 30 is provided with a head 31 and an axial stud 32 which is screw-threaded into the hole 27.
  • the upstream face 33 of the head 31 is of shallow conical shape, the peripheral region of which forms a seat for the ring 25.
  • the spider 26 holds the seat member away from the wall of the pipe 21 such that an annular gap or flow control opening 35 is formed between the peripheral edge of the head 31 and the wall of the pipe 21.
  • a high pressure fluid outlet 36 is connected in the wall of the pipe 21 upstream of the ring 25.
  • the seat member has a conical head 41 which provides a seat for the obturator ring and a cylindrical body portion 42 which is sealably received in the pipe 43 by spaced O-rings 44 and 45.
  • Flow control openings 46 are formed in the head 41 , and adjustment of the gap between the seat and the obturator ring is achieved by cam elements 47 which project through inclined slots 48 in the wall of the pipe 43.
  • a similar form of seat member 51 is employed but provision is made for hydraulic adjustment instead of cam adjustment.
  • the pipe is provided with a cylindrical projection 52 which extends into the seat member 51 , sealed by an internal O-ring 53.
  • the seat member can be moved towards and away from the obturator ring.
  • the obturator ring could be of round or oval cross-section, or the face which is remote from the seat member could be substantially flat.
  • a preferred form of the obturator ring has a convexly curved face for contact with the seat member and an opposite concavely curved face.
  • the concave face is preferably bridged by a series of circumferentially-spaced radial webs 61 which form a plurality of cavities 62 in the face remote from the seat member.
  • the surface area of the ring which is exposed to fluid flow towards the seat member is considerably increased so that the ring has a significantly improved flow sensitivity compared with a circular ring.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)

Abstract

Ce conduit (21), pourvu d'un passage intérieur menant d'un orifice d'admission de fluide (22) à un orifice d'évacuation de fluide (23), contient une bague obturatrice élastique (25) retenue par un évidement annulaire (24) s'étendant autour du pourtour du passage avec une certaine limitation de liberté de mouvement. Un élément de siège (30), monté dans le passage, constitue au moins une ouverture de commande (35) coopérant avec la bague obturatrice, de sorte que le déplacement de la bague permet d'ouvrir et de fermer la ou les ouvertures sous l'effet du fluide s'écoulant dans le passage. L'ensemble peut agir comme soupape anti-retour ou amplificateur de pression fluidique où la bague oscille pour bloquer et débloquer alternativement l'ouverture ou les ouvertures de commande, ce qui entraîne un accroissement pulsé de la pression fluidique dans le conduit. Il est possible de modifier l'intervalle existant entre la bague obturatrice (25) et l'élément de siège (30) par déplacement de cet élément de siège le long du passage, par exemple, par une mise en contact par vis filetée avec un anneau de centrage fixe (26), par un élément de came placé dans une fente inclinée, ou par modification du volume de fluide dans un espace fluidique étanche délimité par l'élément de siège.
PCT/GB2003/002970 2002-07-11 2003-07-09 Ensemble de commande de debit Ceased WO2004008009A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003254439A AU2003254439A1 (en) 2002-07-11 2003-07-09 Flow control assembly

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0216079A GB0216079D0 (en) 2002-07-11 2002-07-11 Flow control assembly
GB0216079.4 2002-07-11

Publications (1)

Publication Number Publication Date
WO2004008009A1 true WO2004008009A1 (fr) 2004-01-22

Family

ID=9940251

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2003/002970 Ceased WO2004008009A1 (fr) 2002-07-11 2003-07-09 Ensemble de commande de debit

Country Status (3)

Country Link
AU (1) AU2003254439A1 (fr)
GB (1) GB0216079D0 (fr)
WO (1) WO2004008009A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10961816B1 (en) 2020-01-20 2021-03-30 Absolute Control, LLC Oilwell choke
US12398809B2 (en) 2023-08-28 2025-08-26 Bestway Oilfield, Inc. Dynamic slab gate valves

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2743899A (en) * 1951-10-15 1956-05-01 Wilbur C Kinney Irrigation pipe joint with valved gasket
FR1165271A (fr) * 1957-01-24 1958-10-21 Clapet de retenue automatique
GB1294882A (fr) * 1969-11-05 1972-11-01
CH598524A5 (en) * 1976-04-27 1978-04-28 Miyoshi Valve Kk Valve with annular diaphragm deformable by pressure difference
DE19851791A1 (de) * 1998-09-16 2000-03-23 Suttner Gmbh & Co Kg Ventilanordnung und Vorrichtung mit einer solchen Ventilanordung
US6206041B1 (en) * 1996-04-02 2001-03-27 Frederick Philip Selwyn Fluid pressure amplifier

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2743899A (en) * 1951-10-15 1956-05-01 Wilbur C Kinney Irrigation pipe joint with valved gasket
FR1165271A (fr) * 1957-01-24 1958-10-21 Clapet de retenue automatique
GB1294882A (fr) * 1969-11-05 1972-11-01
CH598524A5 (en) * 1976-04-27 1978-04-28 Miyoshi Valve Kk Valve with annular diaphragm deformable by pressure difference
US6206041B1 (en) * 1996-04-02 2001-03-27 Frederick Philip Selwyn Fluid pressure amplifier
DE19851791A1 (de) * 1998-09-16 2000-03-23 Suttner Gmbh & Co Kg Ventilanordnung und Vorrichtung mit einer solchen Ventilanordung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10961816B1 (en) 2020-01-20 2021-03-30 Absolute Control, LLC Oilwell choke
US12398809B2 (en) 2023-08-28 2025-08-26 Bestway Oilfield, Inc. Dynamic slab gate valves

Also Published As

Publication number Publication date
AU2003254439A1 (en) 2004-02-02
GB0216079D0 (en) 2002-08-21

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