WO2006002418A2 - Raccord de tuyaux haute pression a auto-alignement - Google Patents

Raccord de tuyaux haute pression a auto-alignement Download PDF

Info

Publication number
WO2006002418A2
WO2006002418A2 PCT/US2005/022758 US2005022758W WO2006002418A2 WO 2006002418 A2 WO2006002418 A2 WO 2006002418A2 US 2005022758 W US2005022758 W US 2005022758W WO 2006002418 A2 WO2006002418 A2 WO 2006002418A2
Authority
WO
WIPO (PCT)
Prior art keywords
conduit
assembly
nut
recited
sleeve
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/US2005/022758
Other languages
English (en)
Other versions
WO2006002418A3 (fr
Inventor
Eckbert Uwe Zander
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.)
Aumovio Systems Inc
Original Assignee
Siemens VDO Automotive Corp
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 Siemens VDO Automotive Corp filed Critical Siemens VDO Automotive Corp
Publication of WO2006002418A2 publication Critical patent/WO2006002418A2/fr
Publication of WO2006002418A3 publication Critical patent/WO2006002418A3/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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00—Adjustable joints; Joints allowing movement
    • F16L27/02—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction
    • F16L27/04—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly-spherical engaging surfaces
    • F16L27/047—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly-spherical engaging surfaces held in place by a screwed member having an internal spherical surface
    • 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
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
    • F16L19/0225—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means without sealing rings
    • 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
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/025—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges

Definitions

  • This invention generally relates to a coupling between two conduits. More particularly, this invention relates to a self-aligning coupling for maintaining a position of a one conduit relative to the coupling and another conduit until completion of the connection.
  • a conventional pipe coupling includes a semi-spherical surface on a first pipe that contacts a concave surface on a second pipe.
  • a nut is utilized to complete the connection and maintain the semi-spherical and concave surface in sealing contact.
  • Such connections are commonly employed in high pressure circuit applications.
  • the nut is typically loosely maintained on one of the first or second pipes.
  • the two pipes are then held in sealing contact and alignment until the nut is secured to a sufficient degree so as to hold the desired alignment.
  • the desired alignment is important to other assembly operations and the manual dexterity required to both maintain proper alignment and tighten the nut can cause inconsistencies in the pipe connection.
  • this invention is a coupling assembly for a joint between two conduits that maintains a desired alignment between a threaded fastener and between conduits comprising the coupling.
  • One example coupling assembly designed according to this invention includes a first conduit, a second conduit and a nut assembled over the first conduit.
  • the second conduit includes a retainer that extends upwardly.
  • the first conduit is inserted into the retainer during assembly of the inventive coupling assembly.
  • the retainer engages the first conduit about shoulder portions to hold the first conduit in a desired alignment relative to the second conduit and the nut.
  • the retainer fits within this nut once the nut is threaded onto the second conduit and the connection is complete.
  • Another example coupling assembly according to this invention includes a retainer with a capture portion and a mount portion.
  • the capture portion extends radially inward toward the first conduit.
  • the first conduit in this example includes a substantially spherical sealing surface that is inserted into the retainer. The retainer receives the first conduit and captures the sealing surface to maintain a desired alignment between the first conduit and the second conduit.
  • Another example coupling assembly includes a biasing member that urges contact of the first conduit with the second conduit, once the nut is initially threaded onto the second conduit.
  • the second conduit includes threads that mate with the threads of the nut.
  • a spring is disposed between the nut and shoulder portions of the pipe flare. The spring provides a biasing force pushing the first conduit, and thereby the sealing surface away from the nut. When the nut is initially threaded onto the second conduit, the spring pushes the sealing surface of the pipe flare against the concave profile and into sealing contact.
  • Another example coupling assembly according to this invention includes a nut with retaining members disposed within an opening between the nut and the first conduit. The friction and resilient biasing of the retaining members hold the first conduit in a desired relative position with the nut
  • Another example coupling assembly according to this invention includes a sleeve disposed within the opening and around the first conduit.
  • the sleeve includes a flange that rests on a top surface of the nut.
  • the sleeve also includes a tube portion that extends into the opening of the nut and around the first conduit.
  • the sleeve comprises an elastic material that grips the first conduit within the nut.
  • the retention provided by the sleeve holds the first conduit in a desired relationship with the nut.
  • Figure 1 is a cross-sectional view of a connection assembly according to this invention.
  • Figure 2 is a cross-sectional view of part of another connection assembly according to this invention.
  • Figure 3 is a cross-sectional view of a completed connection according to this invention.
  • Figure 4 is a cross-sectional view of another conduit connection assembly according to this invention.
  • Figure 5 is a cross-sectional view of another conduit connection assembly according to this invention.
  • Figure 6 is a cross-sectional view of a variation of the conduit connection assembly of Figure 5.
  • Figure 7 is a cross-sectional view of a conduit connection assembly including a sleeve.
  • Figure 8 is cross-sectional view of another sleeve for the conduit connection assembly according to this invention.
  • Figure 9 is a cross-sectional view of a sleeve for the conduit connection assembly of this invention.
  • FIG. 1 schematically shows a coupling assembly 10 that includes a first conduit 12 that is to be attached to a second conduit 14.
  • a nut 20 is assembled over the first conduit 12.
  • the first conduit 12 includes a pipe flare 16 that comprises a substantially spherical sealing surface 28.
  • the pipe flare 16 includes shoulder portions 26 that extend outwardly from the pipe flare 16.
  • the first and second conduits 12, 14, define a passage 24 through which fluid, gas or other material will flow.
  • the second conduit includes a concave profile 18 that includes a sealing surface 30 that mates and is secured in sealing contact with the sealing surface 28 of the first conduit 12.
  • the spherical shaped pipe flare 16 and the concave profile 18 of the second conduit 14 are typical to pipe connections known in the art, and it should be understood that other profiles and shapes that provide a sealing connection between separate conduits are within the contemplation of this invention.
  • the second conduit 14 includes a retainer 22 that extends upwardly past the concave profile 18.
  • the example retainer 22 is an elastic tube into which the first conduit 12 is inserted during assembly of the inventive coupling assembly 10.
  • the retainer 22 engages the first conduit 12 about the shoulder portions 26.
  • the bias nature of the retainer 22 exerts a bias radially inwardly to hold the first conduit 12 in a desired alignment relative to the second conduit 14 and the nut 20.
  • the first conduit 12 is inserted into the retainer 22.
  • FIG. 2 and 3 another example coupling assembly 38 according to this invention includes a retainer 40 with a capture portion 42 and a mount portion 44.
  • the mount portion 44 is attached to the second conduit 14 by mechanical means such as an adhesive, insert molding or by the elastic nature of the retainer itself when inserted into grooves concentric about the passage 24.
  • the example retainer 40 includes the capture portion 42 that extends radially inward toward the axis 36.
  • the first conduit 12 in this example includes a substantially spherical sealing surface 28 that is inserted into the retainer 40.
  • the retainer 40 receives the first conduit 12 and captures the sealing surface 28 to maintain a desired alignment between the first conduit 12 and the second conduit 14.
  • the capture portion 42 provides a downward bias on the first conduit 12 such that the sealing surfaces 28 and 30 are maintained in an adjacent position.
  • the downward retention provided by the capture portion 42 also provides for alignment between the first conduit 12 and the second conduit 14 to be set and held prior to installation of the nut 20. Referring to Figure 3, once the nut 20 is threaded onto the second conduit 14, the retainer 40 is enclosed therein such that no part of the retainer 40 extends outside of the nut 20 and thereby the coupling assembly 10.
  • another coupling assembly 50 includes a biasing member 52 that urges contact of the first conduit 12 into contact with the second conduit 14, once the nut 20 is initially threaded onto the second conduit 14.
  • the second conduit 14 includes threads 34 that mate with the threads 32 of the nut 20.
  • a spring 52 is disposed between the nut 20 and shoulder portions 26 of the pipe flare 16. The spring 52 provides a biasing force pushing the first conduit 12, and thereby the sealing surface 28 away from the nut 20.
  • FIG. 5 Another coupling assembly 60 according to this invention is shown and includes the nut 20 with retaining members disposed within an opening 21 between nut 20 and the first conduit 12.
  • the retaining member is an o-ring 62 that biases outward against the opening 21 and the outer diameter of the first conduit 12.
  • the friction and resilient biasing of the o-ring 62 hold the first conduit 12 in a desired relative position to the nut 20.
  • the coupling assembly 60 includes two o-rings 62 for maintaining the relative position between the first conduit 12 and the nut 20.
  • the additional o-ring 62 provides additional stability for specific applications.
  • FIG. 7 another example coupling assembly 68 according to this invention is shown and includes a sleeve 70 disposed within the opening 21 and around the first conduit 12.
  • the sleeve 70 includes a flange 74 that rests on a top surface of the nut 20.
  • the sleeve 70 also includes a tube portion 72 that extends into the opening 21 of the nut 20 and around the first conduit 12.
  • the sleeve 70 is an elastic material to provide a grip and retention of the first conduit 12 within the nut 20. The retention provided by the sleeve 70 holds the first conduit 12 in a desired relationship with the nut 20.
  • the desired relationship is one in which the first conduit 12 is held substantially transverse to the top surface of the nut 20.
  • the flange 74 of the sleeve 70 provides support for maintaining the transverse alignment between first conduit 12 and the nut 20.
  • another example sleeve 80 includes a flange 82 that abuts the top surface of the nut 20 and a sleeve portion 84 that extends upward from the flange 82.
  • the sleeve portion 84 encircles and is in elastic contact with the first conduit 12. The frictional elastic contact between the sleeve portion 84 and the first conduit 12 maintains a desired alignment with the nut by maintaining a transverse alignment.
  • another example sleeve 90 includes two contact tabs that abut the first conduit 12.
  • the contact tabs 96 are spaced apart a distance to provide the desired alignment with the nut 20.
  • the sleeve 90 also includes a flange portion 92 that abuts the top surface of the nut 20 to maintain and hold the conduit 12 in relative position.
  • the sleeve 90 is fabricated from an elastic material that will bend with forced movement of the first conduit 12 away from the desired alignment.
  • the elastic material of the sleeve 90 will move the first conduit 12 back toward the desired position with the nut 20.
  • the separation of the contact tabs 96 provides desired alignment and ease of installation. As appreciated, a continuous sleeve may in some applications be difficult to install due to the large frictional contact surfaces.
  • the contact tabs 96 reduce the overall area contacting the first conduit, and thereby reduce the frictional forces that can resist assembly onto the first conduit 12. Accordingly, the example coupling assemblies illustrated and described in this specification maintain a relative desired alignment during assembly to ease and quicken assembly without complicating the assembly procedure or adding substantial additional material costs.
  • the preceding description is exemplary rather than limiting in nature. Variations and modifications to the disclosed examples may become apparent to those skilled in the art that do not necessarily depart from the essence of this invention. The scope of legal protection given to this invention can only be determined by studying the following claims.

Landscapes

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

Abstract

L'invention concerne un ensemble de raccord destiné à un joint entre des conduits, qui maintient un alignement désiré entre un organe d'assemblage fileté et les conduits. Cet ensemble de raccord comprend un dispositif de retenue qui s'étend vers le haut à partir d'un deuxième conduit afin de venir en contact avec un premier conduit. Le premier conduit est inséré dans le dispositif de retenue pendant l'assemblage. Le dispositif de retenue vient en contact avec le premier conduit afin de maintenir ce dernier dans un alignement désiré par rapport au deuxième conduit et à l'écrou.
PCT/US2005/022758 2004-06-24 2005-06-24 Raccord de tuyaux haute pression a auto-alignement Ceased WO2006002418A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US58326604P 2004-06-24 2004-06-24
US60/583,266 2004-06-24

Publications (2)

Publication Number Publication Date
WO2006002418A2 true WO2006002418A2 (fr) 2006-01-05
WO2006002418A3 WO2006002418A3 (fr) 2006-05-11

Family

ID=35063239

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/022758 Ceased WO2006002418A2 (fr) 2004-06-24 2005-06-24 Raccord de tuyaux haute pression a auto-alignement

Country Status (1)

Country Link
WO (1) WO2006002418A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2901123B1 (fr) * 2012-09-28 2024-06-26 Rosemount Inc. Accouplement hydraulique haute pression

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3219367A (en) * 1964-10-23 1965-11-23 Imp Eastman Corp Tube connector with permanently assembled sleeve and nut elements
DE2735604A1 (de) * 1977-08-06 1979-02-15 Fip Formatura Inienzione Poli Muffenkupplung
GB2072292B (en) * 1980-03-17 1984-01-04 Paragon Plastics Ltd Compression joints
IT1218825B (it) * 1987-09-17 1990-04-19 Ciro Mastromatteo Raccordi di serraggio per fluidi
US5344195A (en) * 1992-07-29 1994-09-06 General Electric Company Biased fluid coupling
JP3538737B2 (ja) * 2002-03-20 2004-06-14 東京エレクトロン株式会社 管継手
DE20219884U1 (de) * 2002-12-21 2004-04-22 Kulm Holding Ag Rohrverschraubung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2901123B1 (fr) * 2012-09-28 2024-06-26 Rosemount Inc. Accouplement hydraulique haute pression

Also Published As

Publication number Publication date
WO2006002418A3 (fr) 2006-05-11

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