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WO1997033118A1 - Raccord coude en t - Google Patents

Raccord coude en t Download PDF

Info

Publication number
WO1997033118A1
WO1997033118A1 PCT/US1997/003454 US9703454W WO9733118A1 WO 1997033118 A1 WO1997033118 A1 WO 1997033118A1 US 9703454 W US9703454 W US 9703454W WO 9733118 A1 WO9733118 A1 WO 9733118A1
Authority
WO
WIPO (PCT)
Prior art keywords
bore
pipe fitting
thermowell
upstream
downstream
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.)
Ceased
Application number
PCT/US1997/003454
Other languages
English (en)
Inventor
John F. Cates, Jr.
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.)
WFI International Inc
Original Assignee
WFI International Inc
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 WFI International Inc filed Critical WFI International Inc
Priority to AU19879/97A priority Critical patent/AU1987997A/en
Publication of WO1997033118A1 publication Critical patent/WO1997033118A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/07—Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining
    • 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
    • F16L41/02—Branch units, e.g. made in one piece, welded, riveted
    • F16L41/021—T- or cross-pieces

Definitions

  • the present invention relates generally to pipe fittings, and more particularly to a pipe fitting adapted to receive a thermowell and thermocouple assembly.
  • a pipe fitting is a one-piece metal coupling having a bore therethrough and having some type of end portions adapted to be welded onto or connected to other piping or pipe fittings.
  • Pipe fittings are manufactured in various configurations which are commonly required in piping systems. For example, bends in piping systems are commonly accomplished with elbow fittings. Elbow fittings are available in a variety of angles, with the most common angles being 45° and 90°. Wyes and tees are also common types of pipe fittings used, among other things, to have branched piping routes.
  • thermocouple includes an elongate, slender rod member which is inserted in the piping system.
  • the rod member of the thermocouple is preferably positioned longitudinally within the pipe member and along the central axis of the pipe member. This orientation and location is preferable to obtain accurate temperature readings.
  • thermocouple In the past, in order to orient the thermocouple on the longitudinal axis of the pipe member, the thermocouple was generally inserted into the piping system at the location of a 90° bend, typically formed with a 90° elbow fitting. In order to accommodate and receive the thermocouple and thermoweU, a hole would first be cut in the elbow fitting and a short pipe section adapted to receive the thermowell and thermocouple would be welded to the elbow fitting.
  • thermocouples are required in critical industries such as the chemical industry where it is necessary that each weld be x-rayed.
  • the labor cost and time involved in preparing and machining a weld, x-raying the weld, and other weld inspection makes each weld important. Further, each additional weld is a point of potential weakness and thus the elimination of welds wherever possible is desirable.
  • thermowell and thermocouple assembly It is desirable to have a one-piece construction elbow fitting adapted to receive and accurately align a thermowell and thermocouple assembly. It is also desirable to have an elbow fitting adapted to receive a thermowell and thermocouple assembly which minimizes stress points, provides a clean seamless bore, reduces construction costs, and eliminates difficult welds and weld inspections. It is also desirable that the elbow fitting provide for compact reception of the thermowell and thermocouple assembly.
  • the elbow tee fitting of the present invention is a one-piece construction elbow fitting adapted to receive and accurately align a thermowell and thermocouple assembly.
  • the elbow tee fitting minimizes stress points, provides a clean seamless bore, reduces construction costs, and eliminates difficult welds and weld inspections.
  • the elbow tee fitting also provides compact reception of the thermowell and thermocouple assembly.
  • the elbow tee fitting includes an upstream opening and a downstream opening oriented, preferably 90°, relative to one another.
  • the elbow tee fitting further includes an upstream bore in fluid communication with a downstream bore.
  • the upstream and downstream bores have a common inside diameter.
  • the elbow tee fitting includes a port in coaxial alignment with and in fluid communication with the upstream bore.
  • the port includes an outer receiving portion which terminates at an internal shoulder portion having a reduced diameter.
  • the elbow tee fitting has a generally cylindrical external portion extending along the longitudinal axis of the upstream bore and the port.
  • a short downstream projection extends from the generally cylindrical external portion.
  • the joinder of the downstream projection and the cylindrical external portion includes a radiused wall and an increased wall thickness to minimize stress concentration at this point.
  • the elbow tee fitting is forged from a single piece of material to eliminate stress points and provide clean seamless bores.
  • the port of the elbow tee fitting is adapted to receive a flange portion and a connecting portion of a thermowell.
  • the internal shoulder portion is adapted to slidably receive the flange portion of the thermowell and align a tube portion of the thermowell within the upstream bore.
  • the outer receiving portion of the elbow tee fitting is adapted to receive the connecting portion of the thermowell. The connection of the thermowell with the elbow tee fitting provides a fluid tight seal.
  • FIG. 1 is a perspective view of an elbow tee fitting according to a first embodiment of the present invention
  • Fig. 2 is a cross-sectional elevational view of the elbow tee fitting of Fig. 1 showmg a thermowell and thermocouple installed therein; and Fig. 3 is a cross-sectional elevational view of an elbow tee fitting according to a second embodiment of the present invention.
  • the letter F generally designates the elbow tee fitting of the present invention.
  • a first embodiment 10 of the elbow tee fitting F is shown in Figs.
  • first and second embodiments 10 and 100 are shown in Fig. 3.
  • identical features of the first and second embodiments 10 and 100, respectively will be referred to by the same reference numeral. Where the features are different in the second embodiment 100, a three digit numeral will be used.
  • the elbow tee fitting F includes an upstream opening 12 and a downstream opening 14 oriented, preferably 90°, relative to one another. As shown in
  • the elbow tee fitting F includes an upstream bore 16 in fluid communication with a downstream bore 18 as shown in Figs. 2 and 3.
  • the openings 12 and 14 and the bores 16 and 18 have a common inside diameter D as shown in Figs. 2 and 3.
  • the elbow tee fitting F includes a port 20 in coaxial alignment with and in fluid communication with the upstream bore 16.
  • the port 20 includes an outer receiving portion 22 which terminates at an internal shoulder portion 24 having a reduced diameter.
  • the outer receiving portion 22 is a smooth wall 23.
  • the outer receiving portion 22 includes threads 123 for reasons which will be explained below.
  • the elbow tee fitting F includes a generally cylindrical external portion 26 extending along the longitudinal axis of the upstream bore 16 and the port 20.
  • a short downstream projection 28 extends from the generally cylindrical external portion 26.
  • the joinder of the downstream projection 28 and the cylindrical external portion 26 includes a radiused wall and an increased wall thickness as shown in Figs. 2 and 3 to minimize stress concentration at this point.
  • the elbow tee fitting F is forged from a single piece of material to eliminate stress points and provide clean seamless bores 16, 18 and 20.
  • thermocouples 60 and thermowells 40 are available in many different varieties from various manufacturers.
  • One such manufacturer of thermocouples 60 and thermowells 40 is Thermo Sensors Corporation, Garland, Texas.
  • the thermocouple 60 includes an elongate, slender rod member 62 connected to a mounting portion 64.
  • the mounting portion 64 has an exterior threaded portion as shown in Fig. 2.
  • the thermowell 40 includes a tube portion 42, a flange portion 44 and a connecting portion 46.
  • the thermowell 40 also includes a longitudinal recess 48 and a receiving socket 50.
  • the longitudinal recess 48 and the tube portion 42 are concentric with the flange portion 44 and connecting portion 46.
  • thermowell 40 is adapted to receive the thermocouple 60. As shown in Fig. 2, the slender rod member 62 extends into the thermowell longitudinal recess 48 and the threaded mounting portion 64 is received in the receiving socket 50.
  • the tube portion 42 protects the slender rod member 62 from being damaged by the flowing process fluid as will be explained below.
  • the port 20 ofthe elbow tee fitting F is adapted to receive the flange portion 44 and me connecting portion 46 ofthe thermowell 40.
  • the internal shoulder portion 24 of the elbow tee fitting F is adapted to slidably receive the flange portion 44 ofthe thermowell 40 and align the tube portion 42 within the upstream bore 16.
  • the outer receiving portion 22 ofthe elbow tee fitting F is adapted to receive the connecting portion 46 ofthe thermowell 40.
  • the thermowell 40 is secured to the elbow tee fitting F by a weld 52.
  • the connection of the thermowell 40 with the elbow tee fitting F providing a fluid tight seal.
  • the thermowell 40 would have a threaded portion (not shown) adapted to thread into the threaded portion 123 of the outer receiving portion 22.
  • elbow tee fitting F is installed such that the upstream opening 12 is connected to piping (not shown) in the direction from which the process fluid flows (the upstream side) and the downstream opening 14 is connected to piping (not shown) in the direction to which the process fluid flows (the downstream side).
  • the proper installation is required because it is desirable that the thermocouple be pointed in the upstream direction.
  • the tube portion 42 and the slender rod member 62 extend along the longitudinal axis ofthe upstream bore 16 to a point intersecting the longitudinal axis of the downstream bore 18.
  • the tube portion 42 extends beyond the intersection with the longitudinal axis of the downstream bore 18.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

Raccord de tuyau (F) conçu pour être monté dans un système de tuyauterie et pour recevoir un puits thermométrique et un thermocouple. Le raccord (F) comprend un élément unitaire comportant un orifice de passage amont (16) et un orifice de passage aval (18). Le passage amont (16) est en communication fluidique avec le passage aval (18), avec lequel il fait un angle d'approximativement 90 degrés. L'élément unitaire (F) comporte un orifice (20) en alignement coaxial avec le passage amont (16) et une partie épaule interne (24) ayant un diamètre réduit inférieur à celui du passage amont (16).
PCT/US1997/003454 1996-03-08 1997-03-06 Raccord coude en t Ceased WO1997033118A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU19879/97A AU1987997A (en) 1996-03-08 1997-03-06 Elbow tee fitting

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US61275696A 1996-03-08 1996-03-08
US08/612,756 1996-03-08

Publications (1)

Publication Number Publication Date
WO1997033118A1 true WO1997033118A1 (fr) 1997-09-12

Family

ID=24454531

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1997/003454 Ceased WO1997033118A1 (fr) 1996-03-08 1997-03-06 Raccord coude en t

Country Status (2)

Country Link
AU (1) AU1987997A (fr)
WO (1) WO1997033118A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002075193A1 (fr) * 2001-03-20 2002-09-26 Legris Sa Organe de jonction pour circuit hydraulique
GB2383389A (en) * 2001-12-22 2003-06-25 Glynwed Pipe Systems Ltd Duckfoot Bend Assembly
US8854808B2 (en) 2012-06-27 2014-10-07 International Business Machines Corporation Fitting for flexible manifold system
DE102019113471A1 (de) * 2019-05-21 2020-11-26 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verbindungselement zum Verbinden zweier Fluidleitungen oder einer Fluidleitung mit einem Aggregat

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1861314A (en) * 1930-05-30 1932-05-31 Mcandrew Robert Main ferrule for connecting branch pipes
US2404259A (en) * 1943-11-19 1946-07-16 Frederick J Veitch Pipe fitting
US2911235A (en) * 1956-09-06 1959-11-03 Lutie J Stumbough Clean-out fitting
US4316624A (en) * 1979-11-01 1982-02-23 Davlin Irwin H Access union

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1861314A (en) * 1930-05-30 1932-05-31 Mcandrew Robert Main ferrule for connecting branch pipes
US2404259A (en) * 1943-11-19 1946-07-16 Frederick J Veitch Pipe fitting
US2911235A (en) * 1956-09-06 1959-11-03 Lutie J Stumbough Clean-out fitting
US4316624A (en) * 1979-11-01 1982-02-23 Davlin Irwin H Access union

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002075193A1 (fr) * 2001-03-20 2002-09-26 Legris Sa Organe de jonction pour circuit hydraulique
FR2822523A1 (fr) * 2001-03-20 2002-09-27 Legris Sa Organe de jonction pour circuit hydraulique
US6827374B2 (en) 2001-03-20 2004-12-07 Legris Sa Junction member for a hydraulic circuit
GB2383389A (en) * 2001-12-22 2003-06-25 Glynwed Pipe Systems Ltd Duckfoot Bend Assembly
GB2383389B (en) * 2001-12-22 2005-04-06 Glynwed Pipe Systems Ltd Duckfoot bend assembly
US8854808B2 (en) 2012-06-27 2014-10-07 International Business Machines Corporation Fitting for flexible manifold system
DE102019113471A1 (de) * 2019-05-21 2020-11-26 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verbindungselement zum Verbinden zweier Fluidleitungen oder einer Fluidleitung mit einem Aggregat

Also Published As

Publication number Publication date
AU1987997A (en) 1997-09-22

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