WO1984004574A1 - Conduit flexible pour le transport d'un milieu - Google Patents

Conduit flexible pour le transport d'un milieu Download PDF

Info

Publication number
WO1984004574A1
WO1984004574A1 PCT/EP1984/000129 EP8400129W WO8404574A1 WO 1984004574 A1 WO1984004574 A1 WO 1984004574A1 EP 8400129 W EP8400129 W EP 8400129W WO 8404574 A1 WO8404574 A1 WO 8404574A1
Authority
WO
WIPO (PCT)
Prior art keywords
conduit
flexible conduit
flexible
section
cross
Prior art date
Application number
PCT/EP1984/000129
Other languages
German (de)
English (en)
Inventor
Jan Harm Schootstra
Original Assignee
Enitor B V
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
Priority claimed from DE19838313720U external-priority patent/DE8313720U1/de
Application filed by Enitor B V filed Critical Enitor B V
Publication of WO1984004574A1 publication Critical patent/WO1984004574A1/fr

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
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/12—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
    • F16L11/121—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting specially profiled cross sections

Definitions

  • This invention relates to the transportation of madia by way of a conduit which is sufficiantly flexible to enable the conduit to be coilad when not raquired for use.
  • coiling may be effected merely by progressi ⁇ aly coiling the length of conduit into a saries of side-by-side loops and then using soma form of ties to hold tha coiled loops in position to pre ⁇ ent tangling of tha coiled conduit.
  • the flexible conduit is coiled or wound onto a support drum having side cheeks such that tha coils or turns of tha winding are not only supportad by tha drum but are also prevented from relative displacement by the side cheeks.
  • conduit In the case of the well knoun form of flexible conduit commonly used for domestic and commercial purposes for the transport of air, water or other flowable materials or media the conduit (commonly called a hose) has a circular cross section both when in use and when coiled.
  • the volume of tha coilad conduit is correspondingly sized.
  • the volume of the coiled flexible conduit imposes a restriction on the amount i.e., length of conduit that can be wound onto a drum of given cheeks diameter and core length and diameter.
  • a flexible conduit for the transportation of fluids wherein the conduit is so formed that in the absence of pressurized fluid flow therethrough the conduit automatically assumes a generally flattened cross-section as compared with its cross-section in the presence of a pressurized fluid flow therein.
  • the conduit has a ganerally circular or oval cross-section when under pressure and an elongate flattened form in the absence of such internal pressure.
  • those pa rts of the conduit that provide the end portions of the conduit when the latter is in its flattened form have a greater wall thickness than the remainder of the wall of the conduit.
  • Figure 1 is a cross-sectional view of a first embodiment of a flexible conduit of the invention, the Figure illustrates the conduit when in its rest or quiescent condition;
  • Figure 2 is a cross-section of the flexible conduit of Figure 1, the Figure 2 illustrating the conduit when in its expanded or working condition;
  • Figure 3 is a cross-sectional view of a second embodiment of the flexible conduit of the invention, the Figure 3 illustrates the conduit when in its rest or quiescent condition;
  • Figure 4 is an oblique view of the flexible conduit ⁇ f Figure 3;
  • Figure 5 is a cross-sectional view of a third embodiment of the flexible conduit of the invention, the Figure 5 illustrates the conduit when in its rest or quiescent condition;
  • Figure 6 is a cross-sectional view of a fourth embodiment of the flexible conduit of the invention, the Figure 6 illustrates the conduit when in its rest or quiescent condition;
  • Figures 7 and 8 each comprise a cross-sectional view of an arrangement for holding the facing ualls of the conduit when in a quiescent condition in contact with each other; and
  • Figure 9 schematically illustates a possible construction for a conduit of the invention which provides two separate ducts for the flow of fluid.
  • the flexible conduit 1 shown therein is formed from an elastomeric material such as rubber or plastics material such as for example, a rubber based formulation incorporating the requisite fillers and other materials or a plastics material affording the desired degree of resiliancy or the like.
  • the tubular conduit 1 is so formed that it has an elongate slit like bore 2 which is effectively bounded by a top wall part 3, a bottom wall part 4 and opposed end regions 5 and 6.
  • This protuberence may be produced solely by the interaction between the initial shape and the resiliency of the material of the conduit end regions which would require a considerable internal pressure to be produced within the conduit to eliminate the protuberences.
  • the thickness of the wall of the conduit may be thicker at the end regions than the thickness of the remainder of the conduit.
  • a lengthwise extending projecting rib 8 is provided along each and region 5, 6 of the conduit.
  • Each rib 8 inter alia provides a stiffening effect which constrains the end regions against expansion or shape distortion and which assists in providing the inherent rest or quiescent conduit profile, whereby upon release of internal pressure the internal resilency of the conduit material at the end regions facilitates the collapse of the conduit back to its initial condition as shown in the Figures
  • the elongata strips may be formed integrally with the conduit or added subsequently. The use of the strips provides a reinforcement to the overall structural strength which aids the return to the rest position. A plurality of the reinforcement strips may be provided.
  • Figure 5 illustrates an arrangement incorporating six reinforcing strips. These strips are shown at 9, 10, 11, 12, 13 and 14.
  • FIG. 6 schematically illustrates a conduit structure with internally provided ribs 15 which provide the internal counterparts to the ribs 9, 10, 12 and 13 of Figure 5.
  • the conduit 1 is shown in its rest or quiescent condition.
  • the walls 3 and 4 have been shown as being deformed inwards to a concave shape. In practice, such concava shape occurs with the internal faces of the walls 3 and 4 in contact at least over the central regions thereof.
  • This concave feature helps to ensure that the internal volume of theconduit is minimized as much as possible by the natural tendancy of the conduit to return to the rest condition thereby ensuring that the maximum amount of any residual material is driven out from the conduit upon relaxation of pressurization, before the commencement of the coiling of the conduit.
  • a conduit construction may comprise two separate conduits 16 and 17 which are arranged side-by-side and connected by a common connecting wall 18.
  • a Variation is to provide a narrow web which can be long enough to allow the conduits 16 and 17 to be arranged one above the other when coiling onto a drum or the like.
  • the provision of the double conduit makes it readily possible to feed two different materials to a common delivery point. Such a requirement is often a useful feature in industrial and commercial usages of conduits.
  • a possible example is the feed of two different gaseous materials i.e., air and hydrogen or the feed of two different liquid materials to a mixing location.
  • FIG 8 schematically illustrates an interlocking system formed by a dovatail interlocking arrangement 19 including a male dovetail part 20 and a female dovetail part 21.
  • a dovatail interlocking arrangement 19 including a male dovetail part 20 and a female dovetail part 21.
  • the dovetail parts will interconnect on collapse of the walls during the movement of the conduit to its quiescent condition and the subsequent coiling. Since Figure 8 illustrates only a fragmentary part of a conduit formation only one such interlocking arrangement is shown. In practice, two or more arrangements may be provided depending upon the overall dimensions of the conduit.
  • FIG. 9 An alternative form of an interlocking arrangement 19 is shown in Figure 9.
  • the interlocking arrangement comprises two series of saw teeth 22, 23 whose apices are shaped to provide hook-like parts which interlock one with the other as tha two series are brought into contact on the movement of the conduit walls 3 and 4 to the quiescent position.

Abstract

Conduit ou tuyau (1) flexible, de coupe transversale généralement aplatie en l'absence d'un écoulement d'un milieu fluide et de coupe transversale élargie pendant le transport d'un milieu fluide. La construction du conduit est telle que, lorsqu'il est aplati, les segments parois (3, 4) formant la plus grande partie de la construction du conduit se recourbent de manière concave afin d'entrer en contact l'un avec l'autre, de telle façon que tout liquide résiduel dans le conduit est automatiquement expulsé du conduit après arrêt de l'écoulement du liquide.
PCT/EP1984/000129 1983-05-09 1984-04-27 Conduit flexible pour le transport d'un milieu WO1984004574A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19838313720U DE8313720U1 (de) 1983-01-05 1983-05-09 Schlauch, insbesondere ein sich selbst entleerender abgeplattener schlauch

Publications (1)

Publication Number Publication Date
WO1984004574A1 true WO1984004574A1 (fr) 1984-11-22

Family

ID=6753146

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1984/000129 WO1984004574A1 (fr) 1983-05-09 1984-04-27 Conduit flexible pour le transport d'un milieu

Country Status (2)

Country Link
EP (1) EP0143808A1 (fr)
WO (1) WO1984004574A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0675310A1 (fr) * 1994-03-31 1995-10-04 Hewlett-Packard Company Système de conduit flexible avec profil adapté
GB2265959B (en) * 1992-04-01 1995-10-18 Ford Motor Co A fuel pipe
WO2000077433A1 (fr) * 1999-06-10 2000-12-21 Eurocondotte S.P.A. Tuyau souple renforce et procede production de celui-ci
EP1375991A1 (fr) * 2002-06-19 2004-01-02 MERLETT TECNOPLASTIC s.p.a. Construction de tuyau pour usage agricole
WO2006035298A1 (fr) * 2004-09-30 2006-04-06 Eaton Corporation Recipient a volume variable
FR2963653A1 (fr) * 2010-08-03 2012-02-10 Hozelock Tricoflex Tuyau d'arrosage a face externe adherente et glissante
CN110546419A (zh) * 2017-04-24 2019-12-06 株式会社高城 软管构造体

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1234912A (fr) * 1959-08-07 1960-07-01 Tube à section particulière permettant un écrasement sans détérioration
FR1417987A (fr) * 1963-01-22 1965-11-19 Inst Francais Du Petrole Conduite souple armée
US3508587A (en) * 1966-09-29 1970-04-28 Hans A Mauch Tubular structural member
US4095618A (en) * 1975-04-22 1978-06-20 Lloyd Spencer Rodent deterrent irrigation tube

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1234912A (fr) * 1959-08-07 1960-07-01 Tube à section particulière permettant un écrasement sans détérioration
FR1417987A (fr) * 1963-01-22 1965-11-19 Inst Francais Du Petrole Conduite souple armée
US3508587A (en) * 1966-09-29 1970-04-28 Hans A Mauch Tubular structural member
US4095618A (en) * 1975-04-22 1978-06-20 Lloyd Spencer Rodent deterrent irrigation tube

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2265959B (en) * 1992-04-01 1995-10-18 Ford Motor Co A fuel pipe
EP0675310A1 (fr) * 1994-03-31 1995-10-04 Hewlett-Packard Company Système de conduit flexible avec profil adapté
US5561453A (en) * 1994-03-31 1996-10-01 Hewlett-Packard Company Custom profiled flexible conduit system
WO2000077433A1 (fr) * 1999-06-10 2000-12-21 Eurocondotte S.P.A. Tuyau souple renforce et procede production de celui-ci
EP1375991A1 (fr) * 2002-06-19 2004-01-02 MERLETT TECNOPLASTIC s.p.a. Construction de tuyau pour usage agricole
WO2006035298A1 (fr) * 2004-09-30 2006-04-06 Eaton Corporation Recipient a volume variable
FR2963653A1 (fr) * 2010-08-03 2012-02-10 Hozelock Tricoflex Tuyau d'arrosage a face externe adherente et glissante
CN110546419A (zh) * 2017-04-24 2019-12-06 株式会社高城 软管构造体
JPWO2018198416A1 (ja) * 2017-04-24 2020-01-16 株式会社タカギ ホース構造体
CN110546419B (zh) * 2017-04-24 2021-05-25 株式会社高城 软管构造体
TWI783970B (zh) * 2017-04-24 2022-11-21 日商高城股份有限公司 軟管構造體

Also Published As

Publication number Publication date
EP0143808A1 (fr) 1985-06-12

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