US20050242586A1 - Means for connecting pipes comprising an axial press surface to take axial pressure from a preloading tool - Google Patents

Means for connecting pipes comprising an axial press surface to take axial pressure from a preloading tool Download PDF

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Publication number
US20050242586A1
US20050242586A1 US10/524,695 US52469505A US2005242586A1 US 20050242586 A1 US20050242586 A1 US 20050242586A1 US 52469505 A US52469505 A US 52469505A US 2005242586 A1 US2005242586 A1 US 2005242586A1
Authority
US
United States
Prior art keywords
nut
pipe
preloading tool
preloading
collar
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.)
Abandoned
Application number
US10/524,695
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English (en)
Inventor
Stephen Vorley
John Giles
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.)
Marine Direct Consultants Ltd
Original Assignee
Marine Direct Consultants Ltd
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 Marine Direct Consultants Ltd filed Critical Marine Direct Consultants Ltd
Assigned to MARINE DIRECT CONSULTANTS LTD. reassignment MARINE DIRECT CONSULTANTS LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GILES, JOHN S., VORLEY, STEPHEN W.
Publication of US20050242586A1 publication Critical patent/US20050242586A1/en
Priority to US12/348,410 priority Critical patent/US7757366B2/en
Abandoned legal-status Critical Current

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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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/16—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same abutted flanges
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49863—Assembling or joining with prestressing of part
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49895—Associating parts by use of aligning means [e.g., use of a drift pin or a "fixture"]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49904—Assembling a subassembly, then assembling with a second subassembly
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5367—Coupling to conduit

Definitions

  • This invention regards a means of connecting pipes, particularly with a view to remotely operated and mechanized execution.
  • the joint When connecting pipes, it is important to keep control of the prestress level. If the prestress is too low, the joint may open up and leak when subjected to a high internal pipe pressure. If the prestress is set too high, the pipe joint may be overloaded.
  • hydraulic jacking systems are to a certain extent used with large flanges in order to preload some of the pipe joint elements by placing a hollow jack over-each flange bolt and applying the specified pressure. The nuts are screwed in to the flange. The jack is relived and the load is transferred to the bolts. This method is preferred because it allows the possibility of controlling the load applied to the flange.
  • flange connections include many parts and are difficult to work on using a remotely operated tool.
  • a clearance for the preloading tool is required around the bolts, making it necessary for the bolts to be positioned at a distance from the pipe.
  • the flanges must be relatively thick in order to absorb the bending forces in the flange.
  • the object of the invention is to remedy the disadvantages of prior art.
  • a pipe joint according to the invention is constructed with the following main components:
  • the elements a), b), c) and e) may be formed directly in the pipe material using the appropriate technology, or they may be formed in separate coupling parts that are connected to the end portions of the pipe using the appropriate per se technology.
  • the invention comprises the application of an axial load immediately proximal to the periphery of the pipe at and directly outside of the connection area, so that intermediate seals and pipe ends are subjected to elastic deformation.
  • the pipes are joined with a nut coupling that absorbs a portion of the applied deformation forces.
  • the pipe ends and the seals are compressed, and the nut couplings are tensioned with a combined clamping and joining tool.
  • a preloading tool comprises two moving end sections designed to grip respective pipes and an actuator designed to press each end section axially against the press surfaces of the pipe, the nut flange or the rear portion of the threaded collar thus pressing the pipe ends against each other.
  • Locking devices that are known per se are integrated into the end sections, keeping the preloading tool together when the tool encloses the pipe joint. Upon releasing the locks, the tool may be opened and led radially away from the pipe.
  • the preloading tool comprises a nut runner equipped with preferably hydraulic driving means and a cog wheel that, when the tool is positioned around the pipe joint, catches external teeth on the nut or the threaded collar of the pipe joint.
  • the preloading tool is connected to a hydraulic system known per se comprising a pump, tank, operating valves, pressure control devices and more.
  • the elastic compression of the preloaded area consists of:
  • the collar is screwed into the blocked nut until abutment between the forward end of collar and the radial face of the corresponding pipe flange.
  • the nut is screwed onto the male threads until abutment between the internal load bearing surface of nut and the radial face of the corresponding pipe flange.
  • the joining of nut and male threads is preferably accomplished mechanically, by activating a nut runner connected to or integrated in the preloading tool making the joint up to the specified torque. Then the preloading tool is relieved so as to partially transfer the load to the nut. Upon relief, the elastic deformation in the seal and pipe ends is reduced.
  • the rigidity of the nut coupling must be matched to the elasticity of the seal, so that the compression of the seal remains as specified for the nominal workload (ref. 1 in the former section) after relief.
  • the extension of the joint is basically caused by the stretching of the nut.
  • the nut is relatively long compared to the male threaded section, thus approving a larger extension of the joint.
  • the preloading tool is opened and retracted from the coupling.
  • the preloading tool is typically mounted on an ROV (Remotely Operated Vehicle). On shore, it may be integrated into a pipe laying equipment, suspended from a lifting tackle, be installed on a hydraulically operated lever arm, or similar.
  • ROV Remote Operated Vehicle
  • FIG. 1 shows a joined pipe coupling
  • FIG. 2 shows a pipe coupling ready to be joined, with the preloading tool placed near the coupling (the drawing only shows one half of the preloading tool);
  • FIG. 3 shows the preloading tool closed around a pipe coupling
  • FIG. 4 shows a longitudinal section through a pipe coupling with a preloading tool prior to preloading and joining (the nut runner is not shown);
  • FIG. 5 shows a longitudinal section through a joined pipe coupling with the preloading tool in the contracted position (the nut runner is not shown);
  • FIG. 6 shows a cross section through a pipe coupling and preloading tool
  • FIG. 7 shows a longitudinal section made through the nut runner of the preloading tool
  • FIG. 8 shows a cross section through the nut runner of the preloading tool
  • FIG. 9 shows a longitudinal section through a pipe coupling with the preloading tool partially retracted from the coupling.
  • FIG. 10 shows a cross section through a pipe with the preloading tool partially retracted from the pipe coupling.
  • reference number 1 , 1 ′ denotes end portions of two pipes. Between the pipe ends 1 , 1 ′, a seal 2 is placed in appropriate grooves.
  • One end portion 1 is equipped with a flange 3 and a nut 5 .
  • the nut 5 comprises a rear portion 7 with an internal load bearing surface 9 that corresponds to the flange 3 .
  • the nut 5 is provided with an external flange 10 .
  • the nut 5 is provided with a threaded portion 13 .
  • the other end portion 1 ′ is equipped with a flange 3 ′ and a threaded collar 15 with a male thread portion 17 that corresponds to the threaded portion 13 of the nut 5 .
  • the rear portion 19 of the threaded collar has external teeth 21 .
  • the end portions 1 , 1 ′ are equipped with a concentric, predominantly radial press surface 23 .
  • a preloading tool 25 comprises a first end section 27 . This is made up of two section parts 29 , 29 ′.
  • the second end section 31 is made up of two section parts 33 , 33 ′.
  • Two or more rods 35 with associated hydraulic cylinders 37 , piston 39 and seals (not shown) connect the section parts 29 , 33 and 29 ′, 33 ′.
  • the cylinder is fitted with a detachable gland 41 and seals (not shown).
  • the section parts 33 , 33 ′ are provided with a replaceable clamping profile 43 , 43 ′ that corresponds to the profile of the press surface 23 .
  • section parts 29 , 33 ′ respectively 29 ′, 33 ′, joined by the rods 35 are separately connected to a device (not shown) that by means of e.g. hydraulic force may open and close the preloading tool primarily through radial movement relative to the pipe 1 , 1 ′.
  • the preloading tool 25 may be kept closed by use of suitable locking devices (not shown).
  • the preloading tool 25 comprises one or more nut runners 45 equipped with driving means 47 , as an example a hydraulic motor, and a cog wheel 49 that corresponds to the teeth 21 on the threaded collar 15 .
  • driving means 47 as an example a hydraulic motor
  • cog wheel 49 that corresponds to the teeth 21 on the threaded collar 15 .
  • the hydraulic cylinders 37 of the preloading tool 25 are connected up to a hydraulic system (not shown) with an associated pump, tank, valves and control devices.
  • Coupling of pipes may take place through remote operation of the preloading tool 25 .
  • the preloading tool 25 is closed around the end portions 1 , 1 ′ by the section parts 29 , 29 ′, 33 , 33 ′ being moved radially towards the end portions 1 , 1 ′.
  • the end section 27 is pressed against the external flange 10 and the end section 31 is pressed against the end portion 1 ′, so that the press surface 23 coincides with the clamping profile 43 , 43 ′ by the operating and control device of the hydraulic system (not shown) carrying the hydraulic cylinders 37 in the correct direction with a pressure adjusted according to the joint dimension in question.
  • the threaded collar 15 is preferably tightened with the nut runner 45 . This takes place through the cog wheel 49 , which abuts the corresponding teeth 21 of the threaded collar 15 , being driven with a specified torque by the driving means 47 of the nut runner 45 .
  • the pressure on the preloading tool 25 is relieved, so as to transfer the load to the nut 5 and the threaded collar 15 .
  • the preloading tool 25 is opened, retracted from the completed pipe joint, and prepared for the next coupling.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Flanged Joints, Insulating Joints, And Other Joints (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Earth Drilling (AREA)
  • Joints Allowing Movement (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Joints With Pressure Members (AREA)
  • Rotary Presses (AREA)
US10/524,695 2002-08-19 2003-08-18 Means for connecting pipes comprising an axial press surface to take axial pressure from a preloading tool Abandoned US20050242586A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/348,410 US7757366B2 (en) 2002-08-19 2009-01-05 Coupling for connecting tubes with a nut-runner

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO20023926A NO319635B1 (no) 2002-08-19 2002-08-19 Anordning for sammenkopling av ror.
NO20023926 2002-08-19
PCT/NO2003/000283 WO2004016977A1 (en) 2002-08-19 2003-08-18 Means for connecting pipes comprising an axial press surface to take axial pressure from a preloading tool

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/348,410 Division US7757366B2 (en) 2002-08-19 2009-01-05 Coupling for connecting tubes with a nut-runner

Publications (1)

Publication Number Publication Date
US20050242586A1 true US20050242586A1 (en) 2005-11-03

Family

ID=19913908

Family Applications (2)

Application Number Title Priority Date Filing Date
US10/524,695 Abandoned US20050242586A1 (en) 2002-08-19 2003-08-18 Means for connecting pipes comprising an axial press surface to take axial pressure from a preloading tool
US12/348,410 Expired - Lifetime US7757366B2 (en) 2002-08-19 2009-01-05 Coupling for connecting tubes with a nut-runner

Family Applications After (1)

Application Number Title Priority Date Filing Date
US12/348,410 Expired - Lifetime US7757366B2 (en) 2002-08-19 2009-01-05 Coupling for connecting tubes with a nut-runner

Country Status (11)

Country Link
US (2) US20050242586A1 (de)
EP (1) EP1534986B1 (de)
CN (1) CN100400953C (de)
AT (1) ATE372480T1 (de)
AU (1) AU2003256177A1 (de)
BR (1) BRPI0314401B1 (de)
DE (1) DE60316159D1 (de)
DK (1) DK1534986T3 (de)
MX (1) MXPA05001940A (de)
NO (1) NO319635B1 (de)
WO (1) WO2004016977A1 (de)

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US9982494B2 (en) 2012-07-12 2018-05-29 Ace Oil Tools As Device arranged for attaching a pipe stem on a tubular body
CN108161816A (zh) * 2017-12-15 2018-06-15 潍柴动力股份有限公司 一种发动机水管压装工具
CN108453668A (zh) * 2018-04-11 2018-08-28 浙江胜钢新材料有限公司 一种用于安装柔性高压管道防脱接头的装置及其加工方法
CN112681988A (zh) * 2021-03-18 2021-04-20 中石化胜利石油工程有限公司管具技术服务中心 一种摩擦焊接式防喷管线
CN118640345A (zh) * 2024-08-14 2024-09-13 兴化市华伦达铸钢有限公司 一种液压管路连接结构

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EP2511471B1 (de) * 2011-04-11 2014-01-29 Vetco Gray Inc. Steuerung eines Werkzeugs
CN102518891A (zh) * 2011-12-22 2012-06-27 安徽省蚌埠华益导电膜玻璃有限公司 真空管道连接装置
US9803783B2 (en) 2011-12-26 2017-10-31 Gates Corporation Hand tightened hydraulic fitting
GB201205559D0 (en) * 2012-03-29 2012-05-09 Subsea Riser Products Ltd Apparatus for improving flanged connections
CA2912467C (en) * 2013-06-27 2019-05-07 Gates Corporation Extraction device for removing an adapter secured in a port
CA2850647A1 (en) * 2014-04-30 2015-10-30 Kevin Adams Apparatus for adjusting relative spacing of sections of pipe arranged in end to end relation
US10041594B2 (en) 2014-12-15 2018-08-07 Forum Us, Inc. Energized screw gland
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US10292308B2 (en) * 2015-07-28 2019-05-14 Futurewei Technologies, Inc. Fluid coupling mating apparatus and method
US10738922B2 (en) 2015-08-27 2020-08-11 Caterpillar Inc. Fluid conduit connection system with a double undercut clamp
US20170107983A1 (en) * 2015-10-14 2017-04-20 Forum Us, Inc Valve cover and liner retainer for a fluid end of a pump
US9995300B2 (en) 2015-12-02 2018-06-12 Forum Us, Inc. Cartridge retention system
CN108291679B (zh) * 2015-12-03 2019-12-13 日立金属株式会社 制动软管接头组合件
WO2017164834A1 (en) * 2016-03-19 2017-09-28 Oceaneering International, Inc. Subsea clamp tensioning system
US10252405B2 (en) 2016-05-19 2019-04-09 Forum Us, Inc. Bolt tensioning system
US10727658B2 (en) * 2017-04-13 2020-07-28 Fedotech Llc Apparatus and method for joining extended lengths of conduit
CN107008796B (zh) * 2017-04-19 2018-11-13 浙江思科制冷股份有限公司 一种表冷器水压胀管接头及装置
US11112037B2 (en) * 2018-01-30 2021-09-07 General Electric Company Hose connection system
EP3833898B1 (de) 2018-10-02 2023-08-23 Marine Direct Consultants Ltd. System zur herstellung einer verbindung
CN110722500A (zh) * 2019-10-18 2020-01-24 中船澄西船舶修造有限公司 一种船舶管系对接管法兰垫片的拆装工装及拆装方法
CN113231990B (zh) * 2021-05-08 2025-03-28 海天塑机集团有限公司 一种长管管接头锁紧结构
US12565950B2 (en) * 2024-03-04 2026-03-03 Anthem Aviation LLC Tool and method for one-handed manipulation and placement of conduit-joining sleeve
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9982494B2 (en) 2012-07-12 2018-05-29 Ace Oil Tools As Device arranged for attaching a pipe stem on a tubular body
US10767424B2 (en) 2012-07-12 2020-09-08 Ace Oil Tools As Device arranged for attaching a pipe stem on a tubular body
CN108161816A (zh) * 2017-12-15 2018-06-15 潍柴动力股份有限公司 一种发动机水管压装工具
CN108453668A (zh) * 2018-04-11 2018-08-28 浙江胜钢新材料有限公司 一种用于安装柔性高压管道防脱接头的装置及其加工方法
CN112681988A (zh) * 2021-03-18 2021-04-20 中石化胜利石油工程有限公司管具技术服务中心 一种摩擦焊接式防喷管线
CN118640345A (zh) * 2024-08-14 2024-09-13 兴化市华伦达铸钢有限公司 一种液压管路连接结构

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AU2003256177A1 (en) 2004-03-03
NO319635B1 (no) 2005-09-05
DE60316159D1 (de) 2007-10-18
DK1534986T3 (da) 2008-01-02
CN1682059A (zh) 2005-10-12
EP1534986B1 (de) 2007-09-05
US7757366B2 (en) 2010-07-20
WO2004016977A1 (en) 2004-02-26
EP1534986A1 (de) 2005-06-01
NO20023926D0 (no) 2002-08-19
CN100400953C (zh) 2008-07-09
BRPI0314401B1 (pt) 2015-07-07
MXPA05001940A (es) 2005-08-03
AU2003256177A8 (en) 2004-03-03
ATE372480T1 (de) 2007-09-15
US20090108579A1 (en) 2009-04-30
BR0314401A (pt) 2006-12-26

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