CH107038A - Corrugated tube with helical grooves. - Google Patents

Corrugated tube with helical grooves.

Info

Publication number
CH107038A
CH107038A CH107038DA CH107038A CH 107038 A CH107038 A CH 107038A CH 107038D A CH107038D A CH 107038DA CH 107038 A CH107038 A CH 107038A
Authority
CH
Switzerland
Prior art keywords
pipe
corrugated tube
helical grooves
wire
outer wire
Prior art date
Application number
Other languages
German (de)
Inventor
Keller Emil
Original Assignee
Keller Emil
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 Keller Emil filed Critical Keller Emil
Publication of CH107038A publication Critical patent/CH107038A/en

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  • Rigid Pipes And Flexible Pipes (AREA)

Description

  

  Schraubenlinienförmig gerilltes     Wellrohr.       Es sind bereits schraubenlinienförmig ge  rillte     Wellrohre,    z. B. aus metallischem oder  nichtmetallischem Stoff, bekannt, die mit einer       Armierung    aus innern und äussern Draht  windungen versehen sind, welche sich zwischen  den Schraubenwindungen des Rohres befinden  und an denselben anliegen.  



  Diese bekannten     Wellrohre    weisen den  Übelstand auf, dass sie sich bei     achsialer     Druck-     bezw.    Zugbeanspruchung zufolge Ver  tiefung     bezw.    Verflachung ihrer Oberflächen  wellung verkürzen     bezw.    verlängern, und zwar  dies     umsomehr,    je dünnwandiger und de     m-          zufolgen    biegsamer sie sind.  



  Der Erfindung gemäss wird dieser Nach  teil dadurch behoben, dass die benachbarten,  nahezu denselben     Windungsdurchmesser    be  sitzenden innern und äussern Drahtwindungen  in der Drahtstärke so bemessen sind, dass sie  nur um die     Rohrwanddicke    voneinander ge  schieden sind.  



  In der Zeichnung ist ein Ausführungs  beispiel eines solchen     Wellrohres    im Längs  schnitt dargestellt.    Das     Wellrohr        n    aus beliebigem geeignetem  Material ist mittelst einer äussern Drahtwin  dung b und einer innern Drahtwindung c  armiert, von denen die erste einen     Windungs-          durchmesser    d und die zweite einen     Windungs-          durchmesser        d"besitzt,    welche Durchmesser  nur um die Stärke s des Rohrmaterials diffe  rieren,

   so dass der innere Teil der Oberfläche  der Drahtwindung b mit dem konkaven Teil  der     Aussenumfläche    des Rohres a und der  äussere Teil der Oberfläche der Drahtwindung     o     mit dem konkaven Teil der Innenfläche des  Rohres in der Krümmung übereinstimmt. Je  zwei benachbarte     Drahtwindungen    b und c  sind demnach nur durch die Rohrwand von  einander getrennt, so dass sowohl eine     Längs-          zusammendrückung,    als auch eine Dehnung  des Rohres wirksam vermieden werden.



  Corrugated tube with helical grooves. There are already helically ge grooved corrugated pipes such. B. made of metallic or non-metallic material, known, which are provided with a reinforcement of inner and outer wire windings, which are located between the screw turns of the pipe and bear against the same.



  These known corrugated pipes have the drawback that they become or become in the case of axial pressure. Tensile stress according to deepening respectively. Flattening of your surface undulation shorten or. extend, the more so, the thinner-walled and consequently more flexible they are.



  According to the invention, this disadvantage is partially remedied in that the adjacent inner and outer wire windings, which have almost the same winding diameter, are dimensioned in the wire thickness so that they are only separated from one another by the pipe wall thickness.



  In the drawing, an execution example of such a corrugated pipe is shown in longitudinal section. The corrugated tube n made of any suitable material is reinforced by means of an outer wire turn b and an inner wire turn c, of which the first has a turn diameter d and the second has a turn diameter d ", which diameter is only about the thickness s of the pipe material differentiate,

   so that the inner part of the surface of the wire turn b coincides with the concave part of the outer surface of the tube a and the outer part of the surface of the wire turn o with the concave part of the inner surface of the tube in the curvature. Any two adjacent wire turns b and c are therefore only separated from one another by the pipe wall, so that both longitudinal compression and expansion of the pipe are effectively avoided.

 

Claims (1)

PATENTANSPRUCH: Schraubenlinienförmig gerilltes Wellrohr mit Armierung durch zwischen den Schrauben windungen des Rohres befindlichen, an diesen anliegenden innern und äussern Drahtwin dungen", dadurch gekennzeichnet, dass zwecks Vermeidung der Längszusammendrückung und -Dehnung des Rohres die benachbarten nahe zu denselben Windungsdurchmesser besitzen den innern und äussern Drahtwindungen in der Drahtstärke so bemessen sind, dass sie nur um die Rohrwanddieke voneinander ge trennt sind. PATENT CLAIM: Helical, grooved corrugated pipe with reinforcement by inner and outer wire windings located between the screw windings of the pipe, characterized in that in order to avoid the longitudinal compression and expansion of the pipe, the adjacent ones close to the same winding diameter have the inner and outer Wire turns are dimensioned in the wire thickness so that they are only separated from each other by the pipe wall die.
CH107038D 1923-02-08 1924-01-30 Corrugated tube with helical grooves. CH107038A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT107038X 1923-02-08

Publications (1)

Publication Number Publication Date
CH107038A true CH107038A (en) 1924-10-01

Family

ID=3624117

Family Applications (1)

Application Number Title Priority Date Filing Date
CH107038D CH107038A (en) 1923-02-08 1924-01-30 Corrugated tube with helical grooves.

Country Status (1)

Country Link
CH (1) CH107038A (en)

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