[go: up one dir, main page]

CA2128060A1 - Pipe Coupling - Google Patents

Pipe Coupling

Info

Publication number
CA2128060A1
CA2128060A1 CA 2128060 CA2128060A CA2128060A1 CA 2128060 A1 CA2128060 A1 CA 2128060A1 CA 2128060 CA2128060 CA 2128060 CA 2128060 A CA2128060 A CA 2128060A CA 2128060 A1 CA2128060 A1 CA 2128060A1
Authority
CA
Canada
Prior art keywords
sealing
sealing surface
component
slope
coupling
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.)
Granted
Application number
CA 2128060
Other languages
French (fr)
Other versions
CA2128060C (en
Inventor
Thomas Layton Blose
David Lloyd Britten
Kevin James Humphreys
Trent Michael Victor Kaiser
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.)
Evraz Inc NA Canada
Original Assignee
Ipsco Inc Canada
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 Ipsco Inc Canada filed Critical Ipsco Inc Canada
Priority to CA 2128060 priority Critical patent/CA2128060C/en
Publication of CA2128060A1 publication Critical patent/CA2128060A1/en
Application granted granted Critical
Publication of CA2128060C publication Critical patent/CA2128060C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/001—Screw-threaded joints; Forms of screw-threads for such joints with conical threads
    • F16L15/004—Screw-threaded joints; Forms of screw-threads for such joints with conical threads with axial sealings having at least one plastically deformable sealing surface

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)

Abstract

A pipe coupling or connection comprises a female coupling component and a mating male coupling component. Each component is matingly threaded for coupling engagement, and each is provided with an adjacent frusto-conical sealing surface. The sealing surface is provided with a controlled surface roughness, viz. very shallow fine surface variations, preferably formed as microgrooves at a pitch small relative to the pitch of the threads. The slope of the frusto-conical surface of the sealing surface of the male component is slightly mismatched with that of the sealing surface of the female component to simulate the bearing force vs. axial distance characteristic of shrunk-fit circular cylindrical sealing surfaces. The mismatch enables the sealing pressure to be above a design minimum throughout the entire sealing area yet higher at each end of the sealing area.
As the coupling is assembled, thread interference in the vicinity of the sealing surface lags the occurrence of interference between the sealing surfaces. Load threads are provided with negatively inclined load flank faces. The slope of the load thread pitch line of the male element is slightly steeper than the slope of the load thread pitch line of the female element.
Load thread interference values and tolerances are selected to enable the shrunk-fit cylindrical sealing surface simulation to be met over the range of tolerances provided. The envelope of the range of curves of interference vs. distance along the effective pin sealing surface area has a positive slope. The effective sealing area is at least about one-third and preferably at least about half of the available sealing area.
CA 2128060 1994-07-14 1994-07-14 Pipe coupling Expired - Lifetime CA2128060C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2128060 CA2128060C (en) 1994-07-14 1994-07-14 Pipe coupling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2128060 CA2128060C (en) 1994-07-14 1994-07-14 Pipe coupling

Publications (2)

Publication Number Publication Date
CA2128060A1 true CA2128060A1 (en) 1996-01-15
CA2128060C CA2128060C (en) 1998-12-08

Family

ID=4154003

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2128060 Expired - Lifetime CA2128060C (en) 1994-07-14 1994-07-14 Pipe coupling

Country Status (1)

Country Link
CA (1) CA2128060C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003098089A1 (en) * 2002-05-16 2003-11-27 Tenaris Connections Ag Threaded pipe joint
US6851727B2 (en) 2002-04-30 2005-02-08 Tenaris Connections B.V. Threaded pipe joint
US7255374B2 (en) 2002-09-06 2007-08-14 Tenaris Connections Ag Threaded tube joint

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6851727B2 (en) 2002-04-30 2005-02-08 Tenaris Connections B.V. Threaded pipe joint
CN1304780C (en) * 2002-04-30 2007-03-14 特纳瑞斯连接股份公司 Threaded pipe joint
WO2003098089A1 (en) * 2002-05-16 2003-11-27 Tenaris Connections Ag Threaded pipe joint
US6905150B2 (en) 2002-05-16 2005-06-14 Tenaris Connections Ag Threaded pipe joint
NO337452B1 (en) * 2002-05-16 2016-04-18 Tenaris Connections Ltd Threaded pipe joint
US7255374B2 (en) 2002-09-06 2007-08-14 Tenaris Connections Ag Threaded tube joint

Also Published As

Publication number Publication date
CA2128060C (en) 1998-12-08

Similar Documents

Publication Publication Date Title
CA2163282A1 (en) Threaded joint for oil well pipes
MY121763A (en) Threaded connection for two metal pipes comprising a groove in the threads
MY119683A (en) Threaded connection for two metal pipes with a high makeup torque.
MY104226A (en) Hermetic metal pipe joint.
AU582738B2 (en) Tubular connection having a parallel chevron thread
CA2370844A1 (en) Thread form with multifaceted flanks
EP0147358A3 (en) Tubular connection having a chevron wedge thread
NO952056D0 (en) Thread connection for pipes
CA2316142A1 (en) Threaded union with high resistance to overtorque and compression
WO2003076837A3 (en) Wedgethread pipe connection
MY126187A (en) Threaded tubular connection with trapezoidal threads having a convexly rounded thread face.
CA2324457A1 (en) Two-step, low torque wedge thread for tubular connector
AU6386380A (en) Pipe joint
DE3466571D1 (en) Tubular joint with trapped mid-joint metal to metal seal
EP0972953A3 (en) Bolt
CA2411447A1 (en) Pipe joint
CA2324456A1 (en) Two-step, differential diameter wedge threaded connector
GEP19970670B (en) Joint of steel pipes
CA2279899A1 (en) Pipe joint
CA2273068A1 (en) Nut and intermediate product therefor
ES2002380A6 (en) Threaded joint for steel pipes comprising sealing means situated in the threads.
CA2361217A1 (en) Two-step threaded connector having differential thread width
CA2128060A1 (en) Pipe Coupling
CA2128061A1 (en) Pipe Coupling
CA2059622A1 (en) Pipe Coupling

Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20140714