WO2003012324A1 - Ensemble robinet - Google Patents

Ensemble robinet Download PDF

Info

Publication number
WO2003012324A1
WO2003012324A1 PCT/GB2002/002499 GB0202499W WO03012324A1 WO 2003012324 A1 WO2003012324 A1 WO 2003012324A1 GB 0202499 W GB0202499 W GB 0202499W WO 03012324 A1 WO03012324 A1 WO 03012324A1
Authority
WO
WIPO (PCT)
Prior art keywords
tap assembly
aperture
members
assembly
fluid
Prior art date
Application number
PCT/GB2002/002499
Other languages
English (en)
Inventor
Paul Davidson
Original Assignee
Linkindex Limited
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 Linkindex Limited filed Critical Linkindex Limited
Publication of WO2003012324A1 publication Critical patent/WO2003012324A1/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
    • 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
    • F16K3/22—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 sealing faces shaped as surfaces of solids of revolution
    • F16K3/24—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 sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
    • F16K3/26—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 sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
    • F16K3/265—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 sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member with a sleeve sliding in the direction of the flow line

Definitions

  • the present invention relates to a tap assembly for controlling the flow of fluids.
  • a common design of tap includes a screwable spindle having a washer which is engageable with a seat in the tap body. The degree of movement of the spindle determines the flow of fluid through the tap.
  • Another type of tap referred to as a swivel ball joint comprises a tap body in the form of a pipe in which there is provided a rotatable ball having a hole therein such that flow is permitted when the ball is rotated by a quarter turn and the hole is aligned with the pipe.
  • Another type of tap comprises a spindle having thereon a ceramic disc on which engages with a seating. A quarter turn of the spindle which has a wide thread causes the disc to seat/unseat thereby closing or opening the tap.
  • a further disadvantage of the spindle taps is that the taps may not be quickly changed from their fully closed position (no flow) to their fully open position (fluid flowing) as may be required when a flow is needed in an emergency, e.g. in a firefighting situation.
  • a further disadvantage of the ball joint taps is that the taps may seize.
  • a further disadvantage of the ceramic disc taps is that if the water system becomes contaminated with particulate matter, e.g. grit or other debris, such matter may become lodged between the ceramic disc and the seating and may cause cracking of the disc.
  • GB 787754 describes a tap comprising a hollow inner plug having a discharge aperture, about which is telescopically mounted an outer body, the outer body also having a discharge aperture, wherein the inner plug and outer body may be slidably adjusted between a position where the apertures are aligned and hence the tap is open and a position where the aperture of the plug is closed by the wall of the outer body.
  • the construction of the tap, including the sealing arrangement is such that the tap is usable in only one direction without leakage and the tap may be prone to leakage during the opening or closing operation.
  • an assembly comprising a first hollow member for carrying a fluid having at least one aperture in a wall thereof for fluid flow thereacross and a second hollow member having at least one aperture in a wall thereof for fluid flow thereacross, the second member being slidably mounted about the first member, and wherein one of the members is provided with a spaced apart pair of annular seals to seal between the first and second members, the pair of spaced apart annular seals being located on the member to the same side of the at least one aperture in the member, the assembly being adjustable by relative sliding movement of the first and second members in an axial direction between an open position where the at least one apertures of the respective members are in fluid communication with each other thereby to allow flow of fluid between the members and a closed position where the at least one aperture of one member is closed by the wall of the other member and sealed on either side by the pair of annular seals in the other member.
  • each member preferably comprises a generally tubular form.
  • the members may comprise any cross sectional shape, e.g. circular.
  • the members are slidable in an axial direction, i.e. a direction along the length of the members.
  • the second member is slidably mounted about the first member, i.e. the second member is the external member and the first member is the internal member.
  • the second member may be concentrically mounted about the first member.
  • the members are thus telescopically slidable.
  • the external member has an internal diameter slightly larger than the external diameter of the internal member in order to be mounted thereabout.
  • the term diameter herein includes reference to any shape, including other than circular. Diameter thus means generally the measurement across a member .
  • the pair of seals may be located on the internal diameter surface of the second member. Alternatively, the pair of seals may be located on the outer surface of the first member.
  • the at least one aperture in the first member comprises at least one hole in the wall of the member, more preferably a plurality of holes.
  • the first member is provided with a pair of such holes approximately diametrically positioned with respect to each other.
  • the first member is provided with a plurality of diametrically positioned pairs of holes, e.g. two or three such pairs.
  • the assembly enables fluid flow in either direction, i.e. from the first member to the second member or from the second member to the first member, without leakage. Furthermore, the assembly does not leak in any position or during movement between positions.
  • the design is very simple, has few parts and requires little or no maintenance .
  • the second member may have an, e.g. tubular, outwardly extending portion extending from the at least one aperture therein, e.g. at right angles to the remainder of the member.
  • the pair of seals provide a fluid seal between the first and second members.
  • the seals permit relative sliding movement of the members.
  • the seals are spaced apart in an axial direction.
  • the seals comprise 0- rings.
  • the seals are held in recesses provided in the surface of the second member to positively retain the seals.
  • the seals enable the assembly to withstand high fluid pressure without leakage.
  • the seals are both located on the same side of the at least one aperture of the member.
  • the seals define between them a portion or region of the member wall which can close the at least one aperture of the other member.
  • the second member is closed or closable at one end to contain the fluid in a path between the apertures of the first and second members in the open position.
  • the end may be closed by a removable cap, e.g. a screwable cap, which compresses a, e.g. o-ring, seal therebetween.
  • the closable end may be opened to permit insertion of the first member and be closed to prevent removal in use.
  • the closed end may also restrict relative travel of the first member in the direction of that end.
  • the further seal spaced apart from the pair of seals may define therebetween a second portion or region for constraining the fluid to flow between apertures of first and second members when the assembly is in the open position.
  • the assembly includes means to restrict the relative travel of the members.
  • Such means may include one or more projections on the surface of the first member, preferably at or near the end thereof.
  • Such means may take the form of an enlarged diameter end portion on the first member such that a step is thereby provided on the outside of the first member between the enlarged diameter portion and the smaller diameter remainder of the member which step can engage a part of the second member to prevent the further movement of the second member in the direction of the enlarged end.
  • the means may take the form of a suitable circumferential flange at or near the end of the first member.
  • the assembly in accordance with the invention comprises relatively few and simple components which makes the assembly cheap and easy to manufacture.
  • the components do not have to be machined to high tolerances as sealing is effected between them.
  • the tap is reliable and requires little maintenance.
  • the assembly operates by simple sliding movement of the components, the tap may be switched from the open to closed position and vice versa quickly and easily.
  • one of the members e.g. the first member, may have one end engageable with an item of equipment supplying fluid, eg a hose, another pipe or a hydrant, for fluid communication therewith.
  • the other member e.g. the second member, thereby provides the outlet of the tap.
  • the outlet of the other member may also be engageable with a further item, e.g. to supply another pipe.
  • the tap may be constructed of any suitable material, for instance plastics or brass.
  • the assembly may be provided in different sizes, e.g. for use in connection with different standard sizes of hose or pipe such as 3 or 5 inch.
  • FIG. 1 which shows, in longitudinal section, an embodiment of an assembly in accordance with the invention in the closed position
  • Figure 2 which shows, in longitudinal section, the embodiment of assembly of Figure 1 in the open position
  • Figure 3 which shows, in longitudinal section, a further embodiment of an assembly in accordance with the invention
  • Figure 4 which shows, in longitudinal section, another embodiment of an assembly in accordance with the invention in the closed position
  • Figure 5 which shows, in longitudinal section, the embodiment of assembly of Figure 4 in the open position
  • FIG. 6 which shows, in perspective view, an embodiment of first member for use with an assembly in accordance with the invention.
  • an assembly 1 in accordance with the invention in closed off position.
  • the assembly comprises a first member 2 which is of generally tubular form.
  • the first member 2 has a closed end 6 and an open end 8.
  • the external surface of the first member at the open end 8 is provided with a screw thread 10 for engagement with a corresponding screw thread on an item of water supplying equipment, e.g. back plate or a stand pipe.
  • the first member 2 has an end portion 12 of slightly larger external diameter.
  • the first member 2 is provided with two holes 14 positioned diametrically to each other.
  • the holes 14 are provided conveniently by drilling through both sides of the first member.
  • the second member 4 comprises a generally tubular form body 16 which slidably fits about the first member 2.
  • the tubular body 16 has open ends to permit the second member 4 to be slipped over the first member 2.
  • the second member 4 also has a tubular outlet portion 18 extending at right angles to the tubular body 16.
  • An aperture 20 is provided in the second member 4 where the outlet 18 joins the tubular body 16.
  • the tubular body 16 has an enlarged diameter portion 29 to which the outlet 18 is joined and which in the closed position of Figure 1 seals against the enlarged diameter part 12 of the first member 2 and a smaller diameter portion 28 which seals against the remainder of the first member 2.
  • the second member 4 has a screw thread 22 on the end of the outlet 18 to enable the outlet to be connected to an item of equipment if desired, eg a hose.
  • the second member 4 is provided with annular recesses 24a, b,c.
  • the recesses 24a, b,c accommodate ⁇ O' rings 26a, b,c.
  • the ⁇ 0' rings 26a, b,c provide seals between the second member 4 and the first member 2.
  • the 0' rings 26a and 26b, positioned on either side of the aperture 20 of the second member 4 define a first portion of the second member therebetween.
  • the ⁇ 0' ring 26b and the 0' ring 26c spaced longitudinally therefrom at the end of the tubular body 16 define a second portion of the second member 4 therebetween .
  • FIG. 1 there is shown the assembly 1 in its open position.
  • the second member 4 has been slid axially along the first member 2 from the position shown in Figure 1 to the position shown in Figure 2.
  • the sealing means 26a,b,c permit sliding movement between the second member 4 and the first member 2.
  • the second member 4 is positioned in Figure 2 such that the first portion of the second member 4, defined between ⁇ 0' rings 26a and 26b, is now aligned with the apertures 14 in the first member 2, with the 0' rings 26a and 26b on either side of the apertures 14 to seal on either side thereof. It can be seen that a flow of fluid in the direction of arrow A may pass through the apertures 14 in the first member 2 and thereby through the aperture 20 in the second member 4 and thereafter through the outlet 18.
  • an annular space 30 is provided, in the tap's open position, about the first member 2 adjacent the apertures 14 which provides a further path for the fluid flow around the member 2 from apertures 14 to the aperture 20.
  • FIG. 3 there is shown a further embodiment of assembly according to the invention.
  • the assembly is substantially similar to the embodiment shown in Figures 1 and 2 with the following difference.
  • the first member 2 does not have an enlarged diameter end portion as in Figures 1 and 2 which in the closed position resides inside the second member 4.
  • the first member 2 is substantially the same diameter along its length except for a circumferential outwardly extending flange 3 at its end remote from its threaded end.
  • the tubular body 16 of the second member 4 is substantially the same diameter along its length.
  • the internal diameter of the tubular body 16 is less than the outer diameter of the flange 3.
  • FIG 4 there is shown an assembly, similar to that shown in Figures 1 to 3, in accordance with the invention in closed off position.
  • the assembly comprises a circular cylindrical first member 2 which is of generally the same form as first member 2 shown in Figure 3, including having outwardly extending flange 3 at its closed end.
  • the second member 4 comprises a generally tubular form body 16 into the bore of which slidably fits the first member 2.
  • the bore of second member 4 has an enlarged diameter chamber 60 which accommodates flange 3 of the first member.
  • a smaller diameter section accommodates the remainder of the body of the first member.
  • the tubular body 16 has a closable end 42.
  • the mouth of closable end 42 is internally threaded with thread 46 and is closed by end cap 44 which has an externally threaded portion 48 for threaded engagement with thread 46 of the second member.
  • Cap 44 has a radially extending hexagonal nut portion 54 for tightening the cap.
  • the cap 44 carries an o-ring 52 which is compressed between the end of the second member and the nut portion 54 of the cap 44.
  • the end 42 of the second member is thus provided with a fluid-tight seal.
  • the first member 2 is inserted into the second member 4 when its end 42 is open (i.e. with cap 44 removed). First member 2 can be inserted until its flange 3 abuts radial shoulder 62 in the bore of the second member 4.
  • the second member 4 has an aperture 20 forming an outlet channel 18 extending at right angles to the tubular body 16.
  • the channel 18 has internally threaded section 22 into which may be screwed a pipe, hose pipe fitting or other item (not shown) .
  • the second member 4 is provided on the side of aperture 20 opposite to the side with closable end 42 with spaced apart annular recesses 24a, b.
  • the recesses 24a, b accommodate ⁇ 0' rings 26a, b.
  • the ⁇ 0' rings 26a, b provide seals between the second member 4 and the first member 2.
  • the spaced apart 0' rings 26a and 26b, positioned on the same side of the aperture 20 of the second member 4 define a portion 58 of the internal wall of the second member 4 which, in the position shown, closes the apertures 14 of the first member
  • FIG. 5 there is shown the assembly of Figure 4 in its open position.
  • the second member 4 has been slid axially along the first member 2 from the position shown in Figure 4 to the position shown in Figure 5.
  • the sealing means 26a, b permit the sliding movement between the second member 4 and the first member 2.
  • the second member 4 is positioned in Figure 5 such that the aperture 20 of the second member 4 is aligned with the apertures 14 in the first member 2.
  • ⁇ 0' ring 26a seals on one side of the apertures 20 and 14 and the other side is sealed by means of the closed end 42. It can be seen that a flow of fluid in the direction of arrow A may pass through the apertures 14 in the first member 2 and thereby through the aperture 20 in the second member 4 and thereafter through the outlet 18. Equally, it is possible for the flow of fluid to be arranged to flow from section 18, through aperture 20 in the second member 4 and then through apertures 14 in the first member 2, i.e. in the reverse direction to arrow A in Figure 5.
  • seals may, alternatively, be provided in the first member
  • first or internal member 2 which may be employed in any of the embodiments shown in Figures 1 to 5.
  • the first member 2 has a total of six circumferentially spaced apertures 14 1 - 14 VI (the positions of holes 14 v and 14 VI are shown in dotted outline) .
  • the holes are arranged in three diametrically opposed pairs, i.e. 14 1 and 14 VI ; 14 11 and 14 v ; 14 111 and 14 VI .
  • the holes may be easily formed by drilling diametrically through the tubular member 2 from one side to the other thereby to form a pair of diametrically opposed holes.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

L'invention concerne un ensemble robinet comprenant un premier élément creux (2) destiné à acheminer un fluide pourvu d'au moins une ouverture (14) dans une paroi de celui-ci en vue de permettre l'écoulement du fluide et un second élément creux (4) pourvu d'au moins une ouverture (20) dans une paroi de celui-ci afin de permettre l'écoulement du fluide, ce second élément étant monté coulissant sur le premier élément, et un des éléments est équipé d'une paire de joints annulaires (26b, 26c) espacés l'un de l'autre afin de sceller le premier et le second élément, chacun des joints annulaires étant situé sur l'élément du même côté que l'ouverture, l'ensemble pouvant être ajusté par rapport au mouvement coulissant du premier et du second élément dans une direction axiale entre une position ouverte dans laquelle les ouvertures des éléments respectifs sont en communication fluidique l'un avec l'autre permettant ainsi l'écoulement du fluide entre les éléments et une position fermée dans laquelle l'ouverture d'au moins un élément est fermée par la paroi de l'autre et scellée de chaque côté par la paire de joints annulaires dans l'autre élément.
PCT/GB2002/002499 2001-07-31 2002-05-29 Ensemble robinet WO2003012324A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0118617A GB0118617D0 (en) 2001-07-31 2001-07-31 Tap assembly
GB0118617.0 2001-07-31

Publications (1)

Publication Number Publication Date
WO2003012324A1 true WO2003012324A1 (fr) 2003-02-13

Family

ID=9919513

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2002/002499 WO2003012324A1 (fr) 2001-07-31 2002-05-29 Ensemble robinet

Country Status (2)

Country Link
GB (1) GB0118617D0 (fr)
WO (1) WO2003012324A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE423663A (fr) *
CH94078A (fr) * 1919-06-21 1922-04-17 Ravaz Etienne Robinet.
DE736211C (de) * 1940-05-11 1943-06-09 Julius Frommherz Auslaufkolbenschieber
DE897499C (de) * 1951-12-11 1953-11-23 Otto Meyer Absperrorgan fuer gasfoermige und fluessige Medien

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE423663A (fr) *
CH94078A (fr) * 1919-06-21 1922-04-17 Ravaz Etienne Robinet.
DE736211C (de) * 1940-05-11 1943-06-09 Julius Frommherz Auslaufkolbenschieber
DE897499C (de) * 1951-12-11 1953-11-23 Otto Meyer Absperrorgan fuer gasfoermige und fluessige Medien

Also Published As

Publication number Publication date
GB0118617D0 (en) 2001-09-19

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