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UST986007I4 - Stress diffuser - Google Patents

Stress diffuser Download PDF

Info

Publication number
UST986007I4
UST986007I4 US05/879,656 US87965678A UST986007I4 US T986007 I4 UST986007 I4 US T986007I4 US 87965678 A US87965678 A US 87965678A US T986007 I4 UST986007 I4 US T986007I4
Authority
US
United States
Prior art keywords
wall thickness
tube
connection
stress diffuser
diffuser
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.)
Pending
Application number
US05/879,656
Inventor
Joseph D. Papia
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.)
Mobil Oil AS
Original Assignee
Mobil Oil AS
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 Mobil Oil AS filed Critical Mobil Oil AS
Priority to US05/879,656 priority Critical patent/UST986007I4/en
Application granted granted Critical
Publication of UST986007I4 publication Critical patent/UST986007I4/en
Pending 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
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of a wall or to the axis of another pipe
    • F16L41/082—Non-disconnectable joints, e.g. soldered, adhesive or caulked joints
    • F16L41/084—Soldered joints
    • 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
    • F16L13/00—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints
    • F16L13/02—Welded joints
    • F16L13/04—Welded joints with arrangements preventing overstressing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/165—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by using additional preformed parts, e.g. sleeves, gaskets

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

means are provided for diffusing stresses, particularly in couplings between vertical heater tubes 2 and the connection to a tube (pigtail) 3 leading to a manifold, arising from temperature changes during start-up or shut-down, bending moments and vibration during operation. The stress diffuser may be installed at the connection of the manifold connection such as a "pigtail", to a heater tube and is constituted by a short tube 1 machined to varying inside diameter (preferably constant OD) by tapered wall thickness from a mid-section of maximum wall thickness to lesser wall thickness toward the ends of the stress diffuser. For ease of repair and replacement, the stress diffuser is fitted in a collar 4 on the heater tube.
US05/879,656 1978-02-21 1978-02-21 Stress diffuser Pending UST986007I4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US05/879,656 UST986007I4 (en) 1978-02-21 1978-02-21 Stress diffuser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/879,656 UST986007I4 (en) 1978-02-21 1978-02-21 Stress diffuser

Publications (1)

Publication Number Publication Date
UST986007I4 true UST986007I4 (en) 1979-09-04

Family

ID=25374603

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/879,656 Pending UST986007I4 (en) 1978-02-21 1978-02-21 Stress diffuser

Country Status (1)

Country Link
US (1) UST986007I4 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0161815A1 (en) * 1984-04-27 1985-11-21 The Babcock & Wilcox Company Method for replacing tubes in a header or drum
EP0704651A1 (en) * 1994-09-30 1996-04-03 Rockwell International Corporation A tube nozzle having thermal transient reduction
US12130101B2 (en) * 2020-08-14 2024-10-29 Viking Vessel Holdings, Llc Tube transition
US12135177B2 (en) 2020-08-14 2024-11-05 Viking Vessel Holdings, Llc Tube transition

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0161815A1 (en) * 1984-04-27 1985-11-21 The Babcock & Wilcox Company Method for replacing tubes in a header or drum
EP0704651A1 (en) * 1994-09-30 1996-04-03 Rockwell International Corporation A tube nozzle having thermal transient reduction
US12130101B2 (en) * 2020-08-14 2024-10-29 Viking Vessel Holdings, Llc Tube transition
US12135177B2 (en) 2020-08-14 2024-11-05 Viking Vessel Holdings, Llc Tube transition

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