EP0580799A1 - Elements coudes pour ensembles de confinement a canalisations doubles - Google Patents

Elements coudes pour ensembles de confinement a canalisations doubles

Info

Publication number
EP0580799A1
EP0580799A1 EP92917277A EP92917277A EP0580799A1 EP 0580799 A1 EP0580799 A1 EP 0580799A1 EP 92917277 A EP92917277 A EP 92917277A EP 92917277 A EP92917277 A EP 92917277A EP 0580799 A1 EP0580799 A1 EP 0580799A1
Authority
EP
European Patent Office
Prior art keywords
pipe
fittings
fitting
elbow
straight
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.)
Withdrawn
Application number
EP92917277A
Other languages
German (de)
English (en)
Other versions
EP0580799A4 (en
Inventor
Christopher G. Ziu
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.)
DOUBLE CONTAINMENT SYSTEMS CORP.
Original Assignee
DOUBLE CONTAINMENT SYSTEMS CORP
Double Containment Systems
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 DOUBLE CONTAINMENT SYSTEMS CORP, Double Containment Systems filed Critical DOUBLE CONTAINMENT SYSTEMS CORP
Publication of EP0580799A1 publication Critical patent/EP0580799A1/fr
Publication of EP0580799A4 publication Critical patent/EP0580799A4/en
Withdrawn legal-status Critical Current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
    • F16L39/00—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies
    • F16L39/005—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies for concentric pipes

Definitions

  • a double containment piping system that is constructed of an interconnecting part as described above, actually increases the chance that failure to the external environment can occur as compared to a singular containment piping system designed with proper treatment of the thermal expansion of its components.
  • Another problem with existing systems has to do with the ability to combine different inner and outer pipe materials in an efficient manner.
  • Different materials can mean materials that are of a different class, (such as metallic-thermoplastic, metallic-reinforced thermosetting plastic, or thermoplastic-reinforced thermosetting plastic) , or materials that are within the same class but constitute a different material, (such as within the thermoplastic family, combining a fluoropolymer within a polyolefin, or a polyolefin within another polyolefin) .
  • a standard radius pattern can be used as the basis for the primary and secondary containment fittings. This will allow some conformity to conventional elbows, although the conventional elbow styles are not intended to produce adequate flow conditions in a double containment piping system.
  • FIGURE 3 is a cross-sectional view illustrating the use of a pair of elbow pipe fittings of FIGURE 1 in a double containment pipe assembly of the present invention
  • FIGURE 4 is a cross-sectional view illustrating the use of a pair of elbow pipe fittings of FIGURE 2 in a double containment pipe assembly of the present invention
  • FIGURE 5 is a cross-sectional view illustrating a concentric elbow pipe fitting wherein the inner pipe has straight line extensions at either end; and
  • FIGURE 6 is a cross-sectional view illustrating the f the elbow fitting of FIGURE 5.
  • elbow fittings of the present invention are indicated by the numeral 10 and 12 and are used as a connection between straight portions of a double containment pipe assembly (not shown) .
  • the inner/outer pipe can have or be provided with the straight portions at both of its ends, if desired, and the standardized system could have one length of inner and one length of outer pipe.
  • the material can be matched to the inner and outer pipe material of the straight length sections between elbow fittings.
  • the portions of the double containment assembly between elbow fittings can be modular in that, if a leak occurs, it is only necessary to repair and replace one section of the pipe assembly.
  • Utilizing concentric elbow fittings enables the maximum spacing to be achieved between the fittings so as to provide for thermal expansion and contraction without potential contact between the fittings which may cause disruption or cracking, and by utilizing such a system, improved flow through the system is achieved along with more uniform heat transfer.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Thermal Insulation (AREA)

Abstract

Ensemble de confinement à canalisation double possédant des parties courbées constituées d'éléments coudés (10, 12) s'étendant entre les parties droites d'un ensemble de canalisations concentriques interne et externe. Les coudes (10, 12) occupent le même secteur angulaire d'un cercle et sont concentriques entre eux. L'écartement entre les surfaces interne et externe courbées des coudes (10, 12) est égal et identique sur la totalité du rayon de courbure des coudes. Ceci assure une protection maximale contre tout contact entre les coudes interne et externe (10, 12) lors de la dilatation et de la contraction thermiques de la canalisation. On peut fixer les parties droites (18, 20) de la canalisation à des faces opposées (14, 16) des coudes afin de faciliter la fabrication dudit ensemble de confinement à double canalisation là où il sera utilisé. On peut fixer les parties droites aux faces terminales (14, 16) des coudes en les soudant bout à bout ou au moyen des techniques de soudage bout à bout enroulé, ou bien en les emboîtant dans des douilles (14', 16') prévues au niveau des faces terminales.
EP19920917277 1991-04-04 1992-04-03 Elbow fittings for double containment pipe assemblies Withdrawn EP0580799A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US68132491A 1991-04-04 1991-04-04
US681324 1991-04-04

Publications (2)

Publication Number Publication Date
EP0580799A1 true EP0580799A1 (fr) 1994-02-02
EP0580799A4 EP0580799A4 (en) 1994-05-11

Family

ID=24734791

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920917277 Withdrawn EP0580799A4 (en) 1991-04-04 1992-04-03 Elbow fittings for double containment pipe assemblies

Country Status (4)

Country Link
EP (1) EP0580799A4 (fr)
AU (1) AU1797192A (fr)
CA (1) CA2107562A1 (fr)
WO (1) WO1992017725A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201233007Y (zh) * 2007-08-06 2009-05-06 国际壳牌研究有限公司 燃烧器
US11982389B2 (en) * 2022-09-16 2024-05-14 K.D.W. Company Limited Double containment fittings for connecting double containment tubing

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE399192C (de) * 1920-05-31 1924-07-28 Cfcmug Rohrverbindung fuer konzentrisch ineinanderliegende Rohrleitungen
EP0328094A2 (fr) * 1988-02-08 1989-08-16 Joh. Vaillant GmbH u. Co. Tuyau à double paroi et raccordement de sections coaxiales de tuyaux à double paroi par une pièce de raccordement composée d'un tel tuyau à double paroi
DE3836326A1 (de) * 1988-10-25 1990-04-26 Tscherwitschke Gmbh Richard Verbindungsstueck zum verbinden wenigstens zweier in verschiedene richtungen verlaufender, insbesondere aus thermoplastischem kunststoff bestehender rohrleitungen sowie ein verfahren zur herstellung des verbindungsstuecks
DE9101646U1 (fr) * 1990-02-20 1991-05-02 Joh. Vaillant Gmbh U. Co, 5630 Remscheid, De

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2002470A (en) * 1935-05-21 Method of making elbow pipe ftc
US2761949A (en) * 1954-09-29 1956-09-04 Fluid Systems Inc Prefabricated pipe system
US4786088A (en) * 1987-06-25 1988-11-22 Asahi/America, Inc. Double-containment thermoplastic pipe assembly
US4886305A (en) * 1988-08-12 1989-12-12 Fibercast Company Double containment pipe fittings and apparatus to adhesively install the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE399192C (de) * 1920-05-31 1924-07-28 Cfcmug Rohrverbindung fuer konzentrisch ineinanderliegende Rohrleitungen
EP0328094A2 (fr) * 1988-02-08 1989-08-16 Joh. Vaillant GmbH u. Co. Tuyau à double paroi et raccordement de sections coaxiales de tuyaux à double paroi par une pièce de raccordement composée d'un tel tuyau à double paroi
DE3836326A1 (de) * 1988-10-25 1990-04-26 Tscherwitschke Gmbh Richard Verbindungsstueck zum verbinden wenigstens zweier in verschiedene richtungen verlaufender, insbesondere aus thermoplastischem kunststoff bestehender rohrleitungen sowie ein verfahren zur herstellung des verbindungsstuecks
DE9101646U1 (fr) * 1990-02-20 1991-05-02 Joh. Vaillant Gmbh U. Co, 5630 Remscheid, De

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9217725A1 *

Also Published As

Publication number Publication date
AU1797192A (en) 1992-11-02
WO1992017725A1 (fr) 1992-10-15
EP0580799A4 (en) 1994-05-11
CA2107562A1 (fr) 1992-10-05

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Legal Events

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Effective date: 19941101