WO1995034402A1 - Dispositif de presentation de tubes a souder - Google Patents

Dispositif de presentation de tubes a souder Download PDF

Info

Publication number
WO1995034402A1
WO1995034402A1 PCT/NO1995/000096 NO9500096W WO9534402A1 WO 1995034402 A1 WO1995034402 A1 WO 1995034402A1 NO 9500096 W NO9500096 W NO 9500096W WO 9534402 A1 WO9534402 A1 WO 9534402A1
Authority
WO
WIPO (PCT)
Prior art keywords
mounting system
pipes
pipe
fittings
clamp
Prior art date
Application number
PCT/NO1995/000096
Other languages
English (en)
Inventor
Henry Nordtveit
Original Assignee
Aker Offshore Partner 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 Aker Offshore Partner A/S filed Critical Aker Offshore Partner A/S
Priority to AU27548/95A priority Critical patent/AU2754895A/en
Publication of WO1995034402A1 publication Critical patent/WO1995034402A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
    • B23K37/0533—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor external pipe alignment clamps

Definitions

  • This invention relates to a mounting system for pipes and fittings to be joined by welding in a subsequent operation.
  • prior art technique Based on prior art technique, it is practically impossible to test mount several pipe components, maintaining adjustment possibilities at the welds to come, in order to compensate for welding groove eccentricity, and simultaneously secure a mechanically reliable connection between the loose pipe components.
  • prior art technique requires the use of at least eight hoist pulleys and a corresponding amount of temporary supporting devices for each welding joint; moreover, extra tools for adjusting eccentricity and to carry out some tack-welding.
  • a further disadvantage of the mounting system according to prior art technique is associated with the use of hoist pulleys which tend to interfere with and block installation work in the immediately adjacent area.
  • the mounting system according to the invention shall secure a reliable mechanical interconnecting of pipes and fittings of a resultant pipe system, enabling full adjustment possibility for the welds, and wherein the welds can be made without the need of removing the mounting system during the welding.
  • a mounting system of the kind defined introductorily comprises clamps for non-displaceable fixing on pipes in the neighbourhood of a pipe end/welding groove, and intermediate, preferably flexible members (wires, chains or the like) possessing tensile strength and being attachable to the clamps as well as being tightable, especially in the axial direction of the pipe/pipes and/or of the fitting/fittings.
  • the direction of tightability of the flexible members possessing tensile strength coincides substantially with the nearest straight pipe course.
  • two clamps may be fixed on the intermediate pipe, one at each end, i.e. positioned axially inward of an adjacent welding groove.
  • one clamp is fixed, namely at the end/welding groove positioned furthest away from the intermediate pipe, the two clamps thereof each being connected to the clamp of the nearest one of the two outermost pipes, by means of said members possessing tensile strength.
  • these members possessing tensile strength may be assigned similar, preferably flexible lateral pieces extending between two parallel, longitudinal members. Then, these lateral pieces can bring the longitudinal members to follow an angled course along said tube bend, L- or T-piece.
  • Each clamp comprises two interhinged parts shaped to surround a pipe and the free ends thereof are connected by means of a tightening or locking means, preferably in the form of a screw bolt.
  • the clamps are formed with means for connection to adjustable members possessing tensile strength and for tightening the same, e.g. connecting chains.
  • the clamps are provided with a set of centering screws for adjusting divergence of ovality between external diameter and the welding groove at pipes and fittings, og may be provided with a set of adjusting screws serving to lock welding groove spacing upon correct width.
  • the mounting system according to the invention is well suitable for expansion works adapted to large and comprehensive pipe or tube systems.
  • the mounting system makes it possible to compensate for ovality divergence between external diameter and the welding groove at pipes and pipe components, as well as - through the adjustable connecting chains or the like - to exert a sufficient axial load at the joining places between the then unwelded pipes and fittings, in order to keep the built up (unwelded) pipe system securely and stably together while the rest of the mounting work and the subsequent welding takes place.
  • the mounting system may be used for pipes to pipe connections, pipes or tubes to bends or T-pieces and to connect several or many loose pipe components in a pipe system.
  • Figure 1 shows an end view of a pipe having mounted thereon a clamp according to the invention
  • Figure 2 shows a partial view in axial section/side elevational view of two adjacent pipes, where the clamp is fixed on one of the pipes;
  • Figure 3 is a side elevational view of the same pipes and clamp as in the preceding figures, where the angle a indicates an axial tilting possibility for the interhinged clamp parts.
  • the tilting possibility is due to slackness in the hinging and secures that the clamp bite itself firmly into the outer mantle face of the pipe;
  • Figure 4 shows a side elevational view of a portion of a pipe system in which a plurality of pipes and fittings are mounted together prior to a subsequent, permanent joining by means of quantity-welding.
  • reference term la denotes a first, straight pipe, on which a clamp is non- displaceably/non-rotatably fixed, said clamp comprising two interhinged clamp parts 2 and 2• .
  • the hinge 3 consisting of a short piece of plate, exhibits two pivots 4 and 4' in the form of pins, each of which being pivotally connected with the adjacent clamp part end.
  • a tightening or locking means in the form of a head bolt 5 is disposed, the head bolt 5 being provided with a tightening nut 6, the bolt assembly 5,6 being guided and having land areas in rings 7 and 7' anchored to the clamp part ends.
  • each bracket 8 having two spaced, threaded bores, the axially outermost bores accommodating centering screws 9 for adjusting ovality divergence between external diameter of the adjacent pipe lb and the welding groove 10, the axially innermost bores accommodating adjusting screws 11 serving to lock welding groove spacing at correct width.
  • the adjusting screws 11 represent an option and the use thereof is dependent on whether the pipe or pipe part connection requires it or not.
  • attach ⁇ ment sleeves 12 for adjusting bolts 13 have been welded to the clamp.
  • the adjusting bolts 13 serve to tighten chains or similar, preferably flexible members possessing tensile strength, such as wires, generally denoted with reference numeral 14.
  • a tightening nut 15 on the adjusting bolt 13 serves to tighten the chain 14 substantially in the longitudinal direction of the nearest pipes la, lb.
  • the hinge 3 and its pins 4, 4' are formed with an axial slackness and movability, so that an axial load in connection with the tightening of the chains 14 by means of the adjusting bolts 13 and associated tightening nuts 15, increases the radial pressure exerted by the clamp 2,2* on the pipe la. This occurs in that the two clamp parts 2, 2 1 rotate in axial direction, indicated with the angles ⁇ in figure 3, and bite themselves firmly into the outer mantle face of the pipe la at the portions thereof positioned away from the hinge 3,4,4'.
  • the pipe system i.a. four tube bends lc and one T-piece Id are included.
  • Reference numeral 16 denotes a weld between one end of the T-piece and one end of the adjacent tube bend lc.
  • the pipe system is provided with ten clamps according to the invention, and clamps assigned to various pipes or fittings are mutually connected by means of the chains 14.
  • the longitudinal chains 14 are assigned lateral chain pieces 14* .
  • a complete pipe system can be mounted without the use of "hot work” such as welding and grinding.
  • the mounted pipe system can stand in mounted condition, having mounted thereon clamps and intermediate chains until the area of the pipe system is cleared for welding which, by means " of the mounting system according to the invention can be carried out as quantity-welding, representing the a far more rational and rapid welding method than welding individual components, one by one.
  • the chains 14 may be adapted to be lengthened or shortened. This may e.g. be accomplished by means of an overdimensioned chain length in combination with hooks 17 or similar catcher means for releasable engagement in desired chain links for adjustable shortening of the operative chain portions.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Supports For Pipes And Cables (AREA)
  • Manipulator (AREA)

Abstract

La présente invention concerne un dispositif de présentation de tubes (1a, 1b, 1e, 1f, 1g, 1h, 1I, 1j) et/ou d'accessoires (1c, 1d) à réunir par soudure lors d'une opération ultérieure. L'invention a pour objet de fournir un dispositif de montage garantissant une présentation mécaniquement fiable entre des tubes et/ou des accessoires faisant partie d'une tuyauterie. En l'occurrence, le dispositif de présentation reste assemblé pendant les opérations de soudage qui peuvent ainsi s'exécuter en série. A cette fin, la particularité du dispositif de présentation est de comporter d'une part des pinces (2, 2') de conception et de forme leur permettant de se fixer sur les tubes et/ou accessoires à intégrer à la tuyauterie, ces pinces étant chacune situées à proximité d'une (demi-) rainure de soudage (10), et d'autre part des éléments intermédiaires et flexibles (14) présentant une résistance à la traction, tels que notamment des chaînes ou des filins, et réunissant les pinces (2, 2') fixées sur les différents tubes ou accessoires adjacents, la tension desdits éléments flexibles (14) présentant une résistance à la traction pouvant être reprise après montage.
PCT/NO1995/000096 1994-06-10 1995-06-09 Dispositif de presentation de tubes a souder WO1995034402A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU27548/95A AU2754895A (en) 1994-06-10 1995-06-09 Mounting system for pipe welding

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO942159A NO179934C (no) 1994-06-10 1994-06-10 Monteringssystem for rör
NO942159 1994-06-10

Publications (1)

Publication Number Publication Date
WO1995034402A1 true WO1995034402A1 (fr) 1995-12-21

Family

ID=19897166

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO1995/000096 WO1995034402A1 (fr) 1994-06-10 1995-06-09 Dispositif de presentation de tubes a souder

Country Status (3)

Country Link
AU (1) AU2754895A (fr)
NO (1) NO179934C (fr)
WO (1) WO1995034402A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109500522A (zh) * 2018-10-31 2019-03-22 沪东中华造船(集团)有限公司 一种保障胎架立柱垂直度的工装
CN109570886A (zh) * 2018-12-11 2019-04-05 中铁五局集团贵州工程有限公司 一种用于钢管对焊的焊接工装和钢管对焊焊接方法
CN113210913A (zh) * 2021-04-10 2021-08-06 范秀锦 一种移动式建筑施工用电焊装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3653574A (en) * 1969-12-11 1972-04-04 Dearman Timothy Charles Pipe clamping apparatus
GB2074068A (en) * 1980-04-17 1981-10-28 Dearman T C Apparatus for end-to-end welding of pipes
US4722468A (en) * 1982-07-20 1988-02-02 Mcclure Gary W Boiler pipe tool for heliarc welding with tongue and groove interlock
US5040716A (en) * 1990-04-03 1991-08-20 Aqua-Chem, Inc. Pipe welding apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3653574A (en) * 1969-12-11 1972-04-04 Dearman Timothy Charles Pipe clamping apparatus
GB2074068A (en) * 1980-04-17 1981-10-28 Dearman T C Apparatus for end-to-end welding of pipes
US4722468A (en) * 1982-07-20 1988-02-02 Mcclure Gary W Boiler pipe tool for heliarc welding with tongue and groove interlock
US5040716A (en) * 1990-04-03 1991-08-20 Aqua-Chem, Inc. Pipe welding apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109500522A (zh) * 2018-10-31 2019-03-22 沪东中华造船(集团)有限公司 一种保障胎架立柱垂直度的工装
CN109570886A (zh) * 2018-12-11 2019-04-05 中铁五局集团贵州工程有限公司 一种用于钢管对焊的焊接工装和钢管对焊焊接方法
CN113210913A (zh) * 2021-04-10 2021-08-06 范秀锦 一种移动式建筑施工用电焊装置

Also Published As

Publication number Publication date
NO179934C (no) 1997-01-15
NO179934B (no) 1996-10-07
AU2754895A (en) 1996-01-05
NO942159D0 (no) 1994-06-10
NO942159L (no) 1995-12-11

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