WO2002093062A1 - Passage de fluide ou recipient a fluide, et procede permettant l'acces a l'interieur de celui-ci - Google Patents

Passage de fluide ou recipient a fluide, et procede permettant l'acces a l'interieur de celui-ci Download PDF

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Publication number
WO2002093062A1
WO2002093062A1 PCT/DK2002/000314 DK0200314W WO02093062A1 WO 2002093062 A1 WO2002093062 A1 WO 2002093062A1 DK 0200314 W DK0200314 W DK 0200314W WO 02093062 A1 WO02093062 A1 WO 02093062A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
passage
fluid passage
drill
wall
Prior art date
Application number
PCT/DK2002/000314
Other languages
English (en)
Inventor
Knud Jensen
Original Assignee
Hrs A/S
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 Hrs A/S filed Critical Hrs A/S
Publication of WO2002093062A1 publication Critical patent/WO2002093062A1/fr

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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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/04—Tapping pipe walls, i.e. making connections through the walls of pipes while they are carrying fluids; Fittings therefor

Definitions

  • the present invention relates to a method of providing access to a predetermined location in the interior of a fluid passage or fluid container such as a valve housing, a pipe bend, a T-fitting, a processing vessel and the like, for either introducing a fluid or extracting a fluid from said fluid passage.
  • a fluid passage or fluid container such as a valve housing, a pipe bend, a T-fitting, a processing vessel and the like
  • a fluid passage such as a fluid conduit, a fluid valve, a fluid container or the like so as to clean or sterilise a certain location in said interior, introduce a fluid or extract a fluid at a point in time after the fluid passage in question has been put into service.
  • Such access is normally provided by drilling through a wall of the fluid passage. It can be difficult to perform such a drilling operation without providing for a guide for the drill so that the access channel is drilled in the correct place without difficulties and without risking damage to the fluid passage because of uncontrolled application of the drill.
  • An object of the invention is to provide a method of the type in reference whereby access can be provided to a predetermined location in the interior of a fluid passage in a precise, easily controlled manner without need of any other equipment than drilling means for drilling an access passage through a wall of said fluid passage. According to the invention, this object is achieved by the method comprising the steps of:
  • the means for guiding a drill for providing access to the desired internal location are provided on beforehand before the fluid passage or container has been put into service whereby the drilling process can be performed with a great degree of precision, without need of additional guiding means and consequently quickly and easily.
  • this method is preferable to establishing the access from the start and closing the access off with a plug or the like because in the latter case the closed-off access will create a cavity for accumulating particles or a stagnant pool of fluid which is undesirable from a hygienic point of view.
  • said distal open end is surrounded by a first annular welding collar or pipe stub with an interior diameter equal to or larger than said diameter of said space.
  • one or more additional welding collars or pipe stubs are arranged concentrically and mutually spaced around said first collar.
  • the method according to the invention comprises the further steps of:
  • the method comprises the further steps of:
  • At least part of said cylindrical cavity may be located in a body such as a plate welded and/or adhered to said surface of said wall of said fluid passage or fluid container.
  • the cavity may be provided in a separate part that thereafter is placed in the correct location on a wall of the fluid passage or container. This may be advantageous in connection with fluid passages or containers with thin walls or walls made of steel plate wherein it is difficult to provide part of or the entire cavity without weakening the wall too much.
  • the shape of the surface of said closed end is generally conical and substantially corresponds to the shape of the point of said drill such that the drill is centered relative to said cylindrical cavity when the drill point engages said end surface.
  • the method according to the invention comprises the additional step of orienting said fluid passage or fluid container such that said point or region whereto said access is required is located such that gravity flow will drain substantially all liquid in said passage or container out through said drilled channel.
  • said point or region whereto said access is required is located such that gravity flow will drain substantially all liquid in said passage or container out through said drilled channel.
  • the present invention furthermore relates to a fluid passage or fluid container such as a valve housing, a pipe bend, a T-fitting, a processing vessel and the like and comprising an exterior wall and a circular cylindrical space having a distal open end and an opposed proximal closed end provided on and/or in an exterior surface of said wall with the axis of said space oriented towards a point or region in said passage whereto access is required for either introducing a fluid or extracting a fluid from said passage.
  • a fluid passage or fluid container such as a valve housing, a pipe bend, a T-fitting, a processing vessel and the like and comprising an exterior wall and a circular cylindrical space having a distal open end and an opposed proximal closed end provided on and/or in an exterior surface of said wall with the axis of said space oriented towards a point or region in said passage whereto access is required for either introducing a fluid or extracting a fluid from said passage.
  • said distal open end is surrounded by a first annular welding collar or pipe stub with an interior diameter equal to or larger than said diameter of said space, and preferably one or more additional welding collars or pipe stubs are arranged concentrically and mutually spaced around said first collar.
  • At least part of said cylindrical cavity is located in a body such as a plate welded and/or adhered to said surface of said wall of said fluid passage.
  • At least part of said cylindrical cavity is located in said wall of said fluid passage, and preferably at least part of said wall of said fluid passage and/or of said body is made of molded metal such as steel or bronze and said cylindrical space is formed during the molding operation.
  • the shape of the surface of said closed end is generally conical and substantially corresponds to the shape of the point of a drill such that the drill is centered relative to said cylindrical cavity when the drill is inserted in said cavity and the drill point engages said end surface.
  • the inner surface of said passage or container is configured such that substantially all of any liquid therein is able to flow by gravity to said certain point or region whereto said access is required for at least one spatial orientation of said passage or container.
  • gravity flow will drain substantially all of any liquid in said passage or container out through a channel drilled through the wall of the passage or container along said axis of said space when the passage or container is suitably spatially oriented.
  • Fig. 1 is a perspective view of a fluid passage in the form of a valve seat housing
  • Fig. 2 is a partly sectional side view of the valve seat housing shown in Fig. 1 ,
  • Fig. 3 is a partly sectional view of the detail encircled with a dotted line in Fig. 2 shown in enlarged scale, and
  • Fig. 4 is a partly sectional view of a wall of a fluid passage or a fluid container with a plate formed body attached thereto having annular cavities according to the invention provided therein.
  • valve seat housing 1 for collaborating with a valve actuator housing 2 shown partly cut-away in dotted lines in Fig. 2 and for being attached to the valve seat housing by means of not shown bolts to be inserted in apertures 3 in a plate member 4 integral with the valve seat housing 1.
  • the valve seat housing 1 encloses a valve seat 5 for collaborating with a not shown displaceable valve body enclosed in the valve actuator housing 2 in a manner well known in the art.
  • annular collar or pipe stub 6 is provided at different locations on the surface of the valve seat housing 1 , the collars 6 being integral with the housing 1 and formed in the moulding process utilized for forming the housing 1
  • annular collar 7 is provided encircling a coaxial annular collar 8, and an annular collar 9 having an axis 12 is provided encircling a coaxial annular collar 10 in turn encircling a coaxial annular collar 11.
  • the annular collars 6, 8 and 11 encircle a circular cylindrical cavity 13, 14 and 15, respectively, moulded partly into the corresponding section of the wall of the housing 1
  • the proximal, closed end or bottom surface 16 of the cavity 15 is conical such that a not shown drill inserted in the cavity 15 will be centered in the cavity by the engagement between the tip of the drill and the conical bottom surface 16. Similar conical bottom surfaces are provided for the cavities 13 and 14.
  • one of the collars 6-11 may be used to serve as a drilling guide for drilling a passage such as passage 17 (Fig. 2) through the wall.
  • the access passage 17 has been provided by inserting a drill in the cavity 14 coaxial with and encircled by collar 8 and drilling through the wall with the interior surface of the collar 8 and the rest of the interior surface of the cavity 14 serving as a guide for the drill such that the direction of drilling is the predetermined direction and the drill cannot slip on the surface of the wall thereby damaging the wall or resulting in a passage drilled in an incorrect direction.
  • the interior surface thereof is polished so as to remove any irregularities that could cause particles and the like to accumulate.
  • a tube or pipe 18 is welded by means of a welding seam 19 on to the rim of the collar 8 so that the interior of the housing 1 permanently communicates with the interior of the tube 18 such that heated sterilising steam or some other fluid may be injected into the housing 1 or a fluid in the housing 1 may be removed through the pipe 18.
  • the outer collar 7 is used as drill guide and welding collar for communicating the interior of the housing 1 with the interior of a larger diameter pipe 20 indicated with dotted lines in Fig. 2. In this case a drill with a stepped tip configuration is used.
  • the annular collars 7-11 shown in Figs. 1-3 have axes perpendicular to the surface of the wall segment wherein they are provided such as illustrated in the case of axis 12 for the collars 9-11.
  • the angle of the various axes relative to the plane of said surface may differ from a right angle if this is required for accessing a certain location within the housing 1 from a surface portion of the housing not intersected by a line perpendicular to said surface and intersecting said location such as is the case for the collars 6.
  • the location of the annular collars 6 - 11 may be located such relative to the configuration of the inner surface of the valve housing that any liquid remaining in the valve housing may drain out of a drilled passage 17 when the valve housing is spatially oriented in a certain manner.
  • any risk of a pool of liquid remaining in the valve housing during cleaning may be eliminated.
  • crosses 6a indicate where the axes of obliquely extending collars 6 should intersect the interior surface of the valve housing such that the nooks or hollows formed adjacent the valve seat 5 can be drained by gravity through a passage 17 drilled at the location 6a.
  • a wall 30 of for instance a container or a large diameter pipe and made of steel plate is provided with a plate portion 31 provided with collars 32 very similar to the collars 6 in Figs. 1-2.
  • the plate portion 31 is glued to the wall 30 by means of an adhesive 33.
  • a tube 34 is welded to the rim of one of the collars 32 by means of a welding seam 35 after a passage 36 has been drilled through the plate portion 31 and the wall 30 in a manner very similar to the procedure described above.
  • the gap at 37 between the plate portion 31 and the wall 30 at the surface of the passage 36 is full of adhesive 33 such that no pocket for accumulating particles or stagnant process liquid may be formed at this point.
  • the plate portion 31 could of course be welded to the wall 30, but in this case the gap at 37 should be filled out for instance with a sealing means applied to the wall 30 before the welding on of the portion 31 or by solder applied later, in which latter case the internal diameter of the passage 36 must be large enough to allow application of the solder.
  • the collars may also be provided with an internal thread for connecting a tube thereto by engaging a threaded end of the tube with the collar thread.

Landscapes

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

Abstract

L'invention concerne un procédé et des moyens permettant d'accéder à des points déterminés à l'intérieur d'un passage de fluide, tel qu'une enveloppe de siège de soupape (1), consistant à prévoir des colliers (6-11) servant de guides de perçage pour le perçage de passages d'accès (17) et pour le soudage de tubes ou de tuyaux (18, 20) à l'extérieur du passage de fluide.
PCT/DK2002/000314 2001-05-14 2002-05-14 Passage de fluide ou recipient a fluide, et procede permettant l'acces a l'interieur de celui-ci WO2002093062A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA200100752 2001-05-14
DKPA200100752 2001-05-14

Publications (1)

Publication Number Publication Date
WO2002093062A1 true WO2002093062A1 (fr) 2002-11-21

Family

ID=8160491

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2002/000314 WO2002093062A1 (fr) 2001-05-14 2002-05-14 Passage de fluide ou recipient a fluide, et procede permettant l'acces a l'interieur de celui-ci

Country Status (1)

Country Link
WO (1) WO2002093062A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0304246A1 (fr) * 1987-08-19 1989-02-22 Thames Water Utilities Limited Prise pour tuyaux traversés par un fluide
US6098441A (en) * 1997-11-14 2000-08-08 Usui Kokusai Sangyo Kaisha Ltd. Method for forming a through-hole through the circumferential wall of a metal pipe and a metal pipe worked by the said method
GB2349190A (en) * 1999-02-17 2000-10-25 Usui Kokusai Sangyo Kk A method of manufacturing a common rail

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0304246A1 (fr) * 1987-08-19 1989-02-22 Thames Water Utilities Limited Prise pour tuyaux traversés par un fluide
US6098441A (en) * 1997-11-14 2000-08-08 Usui Kokusai Sangyo Kaisha Ltd. Method for forming a through-hole through the circumferential wall of a metal pipe and a metal pipe worked by the said method
GB2349190A (en) * 1999-02-17 2000-10-25 Usui Kokusai Sangyo Kk A method of manufacturing a common rail

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