WO1992006322A1 - Raccords rotatifs - Google Patents

Raccords rotatifs Download PDF

Info

Publication number
WO1992006322A1
WO1992006322A1 PCT/GB1991/001695 GB9101695W WO9206322A1 WO 1992006322 A1 WO1992006322 A1 WO 1992006322A1 GB 9101695 W GB9101695 W GB 9101695W WO 9206322 A1 WO9206322 A1 WO 9206322A1
Authority
WO
WIPO (PCT)
Prior art keywords
connector
portions
key means
key
slot
Prior art date
Application number
PCT/GB1991/001695
Other languages
English (en)
Inventor
Anthony John Asbury
Original Assignee
Anthony John Asbury
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 Anthony John Asbury filed Critical Anthony John Asbury
Publication of WO1992006322A1 publication Critical patent/WO1992006322A1/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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/24—Couplings of the quick-acting type in which the connection is made by inserting one member axially into the other and rotating it to a limited extent, e.g. with bayonet action
    • F16L37/244—Couplings of the quick-acting type in which the connection is made by inserting one member axially into the other and rotating it to a limited extent, e.g. with bayonet action the coupling being co-axial with the pipe
    • F16L37/252—Couplings of the quick-acting type in which the connection is made by inserting one member axially into the other and rotating it to a limited extent, e.g. with bayonet action the coupling being co-axial with the pipe the male part having lugs on its periphery penetrating in the corresponding slots provided in the female part
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
    • 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
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/24—Couplings of the quick-acting type in which the connection is made by inserting one member axially into the other and rotating it to a limited extent, e.g. with bayonet action
    • F16L37/244—Couplings of the quick-acting type in which the connection is made by inserting one member axially into the other and rotating it to a limited extent, e.g. with bayonet action the coupling being co-axial with the pipe
    • F16L37/2445—Couplings of the quick-acting type in which the connection is made by inserting one member axially into the other and rotating it to a limited extent, e.g. with bayonet action the coupling being co-axial with the pipe in which a male cylindrical element is introduced into a female cylindrical element, each element containing several threads axially spaced and circumferentially discontinuous which engage with each other as a result of the rotation of one of the elements

Definitions

  • the present invention relates to a connector for connecting together two members, and in particular, but not exclusively, to a tubular connector for connecting together tubular members such as are used in the oil and gas industries.
  • the oil and gas industries utilise various means for connecting together tubular members, such as conduits and/or struts.
  • a vital aspect to be considered, particularly with respect to offshore applications, is the anticipated fatigue spectra to which the assembly will be exposed.
  • the connected assembly must either be inherently sufficiently robust to resist fatigue loads or, preferably, employ such a connector system that the impact of fatigue loadings becomes controlled and much reduced.
  • One such latter approach involves introducing a pre-load element into the assembled joint whereby relative movement of the connector interfacing components is restricted for loads up to the maximum anticipated load.
  • connection should be quick and involve the minimum of specialist equipment.
  • the practicality of manufacturing the connector components must be taken into consideration. They must be capable of being manufactured in a manner which both permits the use of currently available machine tool technology and facilitates the economical production of small and large quantities of the components .
  • Useful attributes to be aimed at include simplicity of design, minimisation of the number of components of the connector, provision of components with uncomplicated, smoothly-blending profiles and maximisation of tolerances.
  • the connector should also be readily disconnectable, to facilitate separation of the tubing assembly.
  • the multiplicity of known tubular connectors satisfy various of the above design criteria in varying degrees. Particularly, where a pre-load element is to be provided in the assembled joint, many known connectors are extremely complex. Examples of such connectors include those which are made up by high pressure hydraulic interfacing means. Such connectors may also have tight constraints on thread transverse- sectional profiles. Other types of pre-loaded connection make use of helical or part helical threads . Such threads often induce substantial delays during make-up of the connections and have a number of other drawbacks including, in some cases, narrow tolerance ranges .
  • a connector for connecting together two members which connector comprises a male and female portions associated, in use, with the two members respectively, one of said portions having at least one part-circumferentially-extending key means, and the other of said portions having at least one part-circumferentially-extending slot means co-operable with the key means of the one portion, there being a like number of longitudinally-extending recesses as there are key means which recesses are defined in said other portion to accommodate the key means of the one portion when the two portions are fitted together prior to interlocking of said key means and slot means, said key means and slot means being interlocked, in use, by partial relative rotation of the two portions to interengage said key means and slot means, the key means and the slot means both being defined by transverse walls of the respective portions and the transverse wall of at least one of the portions which wall is engaged by the corresponding wall of the other portion being inclined to a true radial plane whereby the male and female portions are progressively cammed axially together as said
  • the radial extent of the or each key means preferably increases progressively from a minimum at the end thereof which first enters the slot means on interengaging the two connector portions.
  • Each said key means may thus have an arcuate peripheral profile, and so be of a "lobar" profile.
  • the length of such key means may lie wholly in a radial plane, unlike the case where a helical thread is employed.
  • the transverse walls of both portions and which engage one another to effect interlocking are both inclined at substantially the same angle to a true radial plane.
  • the other transverse walls may also be similarly inclined, or may lie in radial planes.
  • each key means may include a plurality of axially- spaced, circumf erentially-aligned like key elements , and each slot means then including a like plurality of axially-spaced, circumf erentially-aligned like slot elements interengageable by the key elements .
  • the two connector portions are provided with re spective abutment f ac e s which interengage on fitting together the two portions , the interengaging pressure being increased by the axial camming action occurring on interlocking the connector portions .
  • the connector may be given a pre-load.
  • Both abutment surfaces may extend generally radially, or may be of conical form * .
  • a connector for connecting together two members which connector comprises male and female portions associated , in use , with the two members respectively, one of said portions having at least one part-circumf erentially-extending key means , and the other of said portions having at least one part- circumferentially-extending slot means co-operable with the key means of the one portion, there being a like number of longitudinally-extending recesses as there are key means which recesses are defined in said other portion to accommodate the key means of the one portion when the two portions are fitted together prior to interlocking of said key means and slot means , said key means and slot means being interlocked , in use , by partial relative rotation of the two portions to interengage said key means and slot means , the or each key means being in the form of a rib projecting in the radial direction from said one portion and having a curved peripheral profile, the radial projection of the rib increasing from a minimum at the end thereof which first enters the slot means on intereng
  • each key means may have an arcuate peripheral profile of a smaller radius of curvature than that of the surface from which the key means upstands; the key means may thus have a "lobar" profile, and the slot means should be similarly formed.
  • Figure 1 is a transverse-sectional view of part of a connector embodying the invention, illustrating the inter-fitted but unlocked state of the male and female portions of the connector;
  • Figure 2 is a longitudinal sectional view of the connector of Figure 1 taken along the line II-II on
  • Figure 3 is a transverse-sectional view of the connector of Figure 1 illustrating the male and female portions of the connector in the interlocked state;
  • Figure 4 is a longitudinal section view of the connector of Figure 1 taken along the line IV-IV on
  • Figure 3 Figures 5 to 7 are partial longitudinal sectional views of the connector of Figure 1 and illustrating successive stages in the transition from the unlocked state to the interlocked state;
  • Figures 8 to 10 are transverse-sectional views of the connector, illustrating successive stages in the transition from the unlocked state to the interlocked state;
  • Figure 11 is a transverse-sectional view of the connector of Figure 1 and illustrates the provision of a secondary locking pin
  • Figure 12 is a longitudinal sectional view taken along the line XII-XII on Figure 11;
  • Figures 13 to 15 are transverse-sectional views of an alternative embodiment of connector incorporating a circlip, and illustrating the insertion of the circlip ( Figure 13 and Figure 14) and the interlocked state of the connector (Figure 15);
  • Figures 16 to 18 are longitudinal sectional views taken along the lines XVI-XVI, XVII-XVII and XVIII-XVIII of Figures 13 to 15, respectively;
  • Figure 19 is a transverse-sectional view of a further embodiment of the invention in the interfitted and unlocked states, the male connector portion having an eccentric circular external spline;
  • Figure 20 is a longitudinal sectional view of the connector of Figure 19 taken along the line XX-XX.
  • the tubular connector comprises a male tubular portion 1 and a female tubular portion 2.
  • the end of the male portion 1 illustrated in Figure 2 essentially comprises four stepped circumferential outer surfaces 3, 4, 5 and 6 of progressively smaller diameter.
  • the latter three outer surfaces 4, 5, and 6 are designed to fit within correspondingly stepped inner circumferential surfaces 7, 8 and 9 in an end of the female portion 2, such that the end surface 11 of the male portion abuts a shoulder 12 formed at the transition between the stepped inner surface 9 and the innermost bore 10 of the female portion 2.
  • a distinctive feature of the third stepped outer surface 5 of the male portion 1 is the provision of three equally spaced circumferentially extending radially projecting lobes 13, 14 and 15.
  • lobes 13, 14 and 15 each comprise three axially spaced circumferentially extending lobar external splines (keys) 13A to 13C, 14A to 14C, 15A to 15C.
  • Arcuate recesses 16, 17 and 18 are provided in the intermediate stepped internal surface 8 of the female portion 2 and extend longitudinally of that portion to accommodate the lobes 13, 14 and 15 of the male portion 1 when the male portion 1 is inserted into the female portion 2 prior to locking.
  • Circumferentially extending internal slots 19A to 19C are formed in the internal surface 8 of the female portion 2, and are co-operable with the external splines 13A to 13C, 14A to 14C and 15A to 15C, respectively, when the end surface 11 of the male portion 1 abuts the shoulder 12 of the female portion 2.
  • the connector is shown in the locked state, with the external splines 13A to 13C, 14A to 14C, 15A to 15C of the male portion fully engaged with the internal slots 19A to 19C of the female portion 2.
  • This state is achieved by partial rotation of the male portion 1 in either direction when fully within the female portion 2 and under an axially compressive load (e.g. gravity) using, for example, torque wrench.
  • the splines and slots respectively of the male and female portions progressively inter-engage as the external splines 13A to 13C, 14A to 14C, 15A to 15C move out of alignment with the recesses 16, 17, 18 and into alignment with the slots 19A to 19C.
  • stop surfaces 20A to 20C may be so profiled that they enable the splines to travel slightly beyond them before being fully stopped to reduce the possibility of unlocking 'backing off) of connector in response to vibration.
  • the splines 14A to 14C extend deeper into the slots 19A to 19C.
  • the side walls of the slots 19A to 19C are inclined to the true radial plane and so cam the male portion deeper into the female portion 2. Because the male and female portions 1 and 2 are already in axial abutment, this has the effect of inducing an axial pre-load between the abutting end 11 of the male portion 1 and the shoulder 12 of the female portion 2. In use, the connector can rapidly and easily be coupled.
  • the male and female connector portions 1 and 2 can be integrally formed with, or be fitted by any suitable means including for example welding to, the ends of the tubular members to be joined.
  • the splines of the male portion 1 are aligned with the recesses 16, 17 and 18 of the female portion 2 to enable the male portion 1 to be inserted into the female potion 2 until the end surface 11 of the male portion abuts the shoulder 12 of the female portion. Once fully inserted, the male portion need only be rotated by as little as, for example, ten degrees fully to inter ⁇ engage the splines 14A to 14C etc. of the male portion 1 with slots 19A to 19C of the female portion, thereby axially locking the portions of the connector together and pre-loading the connection.
  • the splines of the connector of the present invention may have a far greater variety of transverse-section profiles.
  • the pitch of a helical thread is necessarily kept low to limit make-up torques and the depth and thickness of the thread is similarly limited.
  • the present splines may be of greater pitch, depth and thickness, the former enabling greater mechanical advantage in camming together the male and female portion of the connector, and the latter reducing the risk of shearing under load.
  • the key means need not comprise splines.
  • the key means could be defined by a profiled circlip 22, as shown in Figures 13 to 17. Such a circlip or snap-ring may serve initially to hold together the male and female portions following insertion, but before inter-locking thereof. Thereafter, on turning the male portion, a tight pre-loaded connection may be obtained.
  • the key means of the connector may be provided on the female portion of the connector, and the slot means on the male portion, but this approach is comparatively wasteful of labour and materials.
  • the number of "lor 3" and number of splines per "lobe” is variable.
  • the splines need not be lobar at all. They may for example be of generally triangular or of any other shape which has a leading edge (the edge which first engages with the internal slots) which enables progressively deeper inter-engagement.
  • Lobar spines are preferable because they are simple to form by turning without the need for more complex machining (e.g. milling) and because they have no corners which may become damaged or cause damage in use.
  • Such "lobar" splines may comprise, for example, the vertices of an ellipsoidal male connecting portion ( Figures 8 to 10) or a triangular male connecting portion.
  • Another possibility is for the protrusion to be defined by an eccentric circular male connecting portion, as shown at 23 in Figures 19 and 20.
  • the female portion of the connector may comprise a rotatable collar fitted over a stem, the stem being that part of the female connector portion which is associated, in use, with one of the two members to be joined.
  • the mating ends of the male and female portions may be designed to be frusto-conical in shape to facilitate alignment of the two portions during assembly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Surgical Instruments (AREA)

Abstract

Un raccord servant à relier deux éléments comporte des parties mâle et femelle (1, 2), qui peuvent être enclenchées l'une dans l'autre, la connexion étant alors realisée par une rotation partielle d'une partie par rapport à l'autre. Une des parties comporte des protubérances (13) radiales espacées qui suivent une trajectoire arquée, le profil périphérique de chaque protubérance étant généralement arqué. L'extension radiale de la protubérance augmente progressivement depuis une valeur minimum à l'extrémité d'attaque dans le sens de la direction de rotation nécessaire pour réaliser la connexion. L'autre partie comporte des rainures (19) disposées en arc de cercle, chacune pouvant recevoir une protubérance de ladite partie, et des logements sont définis entre les rainures (19) pour recevoir les protubérances (13) lors de l'enclenchement initial des deux parties. Les parois des protubérances et des rainures qui s'enclenchent sont inclinés vers un plan radial réel, et la réalisation de la connexion fait déplacer également une partie dans le sens axial par rapport à l'autre. Des faces d'appui (11 et 12) peuvent également être prévues sur les deux parties (1, 2), lesdites faces s'enclenchant lors de l'assemblage des deux parties, le raccord étant ainsi soumis à une précontrainte lorsque la connexion est complètement réalisée.
PCT/GB1991/001695 1990-10-02 1991-10-02 Raccords rotatifs WO1992006322A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9021385.1 1990-10-02
GB909021385A GB9021385D0 (en) 1990-10-02 1990-10-02 Advanced connectors

Publications (1)

Publication Number Publication Date
WO1992006322A1 true WO1992006322A1 (fr) 1992-04-16

Family

ID=10683083

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1991/001695 WO1992006322A1 (fr) 1990-10-02 1991-10-02 Raccords rotatifs

Country Status (4)

Country Link
EP (1) EP0551340A1 (fr)
AU (1) AU8625791A (fr)
GB (1) GB9021385D0 (fr)
WO (1) WO1992006322A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996027050A1 (fr) * 1995-02-25 1996-09-06 Bicc Public Limited Company Joints de structure
US6283511B1 (en) 1998-08-24 2001-09-04 Well Engineering Partners, B.V. Pipe coupling
GB2441204A (en) * 2006-08-22 2008-02-27 Schlumberger Holdings A connector which engages coiled tubing via a bayonet connection
EP1579925A3 (fr) * 2004-03-22 2008-04-02 Pnr Italia S.R.L. Buse à montage et démontage rapides et son procédé de fabrication
EP2400196A3 (fr) * 2010-06-25 2013-08-14 Rehau AG & Co Elément de conduite
DE102020113401A1 (de) 2020-05-18 2021-11-18 Haimer Gmbh Kupplungselement zur Aufnahme einer Tastspitze in einem Tastmessgerät, Schraubeinsatz zur Aufnahme einer Tastspitze in einem Tastmessgerät, Kupplungsanordnung für einen Tasteinsatz bei einem Tastmessgerät, Tastmessgerät(-e)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3301579A (en) * 1964-11-25 1967-01-31 Autoclave Eng Inc Interrupted connection
GB1161012A (en) * 1966-08-15 1969-08-13 Rockwell Mfg Co Joints for Tubing
US3540762A (en) * 1968-08-16 1970-11-17 Jerald V Dunlap Segmented thread coupling

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3301579A (en) * 1964-11-25 1967-01-31 Autoclave Eng Inc Interrupted connection
GB1161012A (en) * 1966-08-15 1969-08-13 Rockwell Mfg Co Joints for Tubing
US3540762A (en) * 1968-08-16 1970-11-17 Jerald V Dunlap Segmented thread coupling

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996027050A1 (fr) * 1995-02-25 1996-09-06 Bicc Public Limited Company Joints de structure
US6283511B1 (en) 1998-08-24 2001-09-04 Well Engineering Partners, B.V. Pipe coupling
EP1579925A3 (fr) * 2004-03-22 2008-04-02 Pnr Italia S.R.L. Buse à montage et démontage rapides et son procédé de fabrication
GB2441204A (en) * 2006-08-22 2008-02-27 Schlumberger Holdings A connector which engages coiled tubing via a bayonet connection
GB2441204B (en) * 2006-08-22 2009-05-13 Schlumberger Holdings System and method for forming a coiled tubing connection
US7861776B2 (en) 2006-08-22 2011-01-04 Schlumberger Technology Corporation System and method for forming a coiled tubing connection
US8505637B2 (en) 2006-08-22 2013-08-13 Schlumberger Technolgoy Corporation System and method for forming a coiled tubing connection
EP2400196A3 (fr) * 2010-06-25 2013-08-14 Rehau AG & Co Elément de conduite
DE102020113401A1 (de) 2020-05-18 2021-11-18 Haimer Gmbh Kupplungselement zur Aufnahme einer Tastspitze in einem Tastmessgerät, Schraubeinsatz zur Aufnahme einer Tastspitze in einem Tastmessgerät, Kupplungsanordnung für einen Tasteinsatz bei einem Tastmessgerät, Tastmessgerät(-e)

Also Published As

Publication number Publication date
GB9021385D0 (en) 1990-11-14
EP0551340A1 (fr) 1993-07-21
AU8625791A (en) 1992-04-28

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