MY180662A - A duct with internal spiral ribs - Google Patents

A duct with internal spiral ribs

Info

Publication number
MY180662A
MY180662A MYPI20091948A MYPI20091948A MY180662A MY 180662 A MY180662 A MY 180662A MY PI20091948 A MYPI20091948 A MY PI20091948A MY PI20091948 A MYPI20091948 A MY PI20091948A MY 180662 A MY180662 A MY 180662A
Authority
MY
Malaysia
Prior art keywords
range
duct
determining
values
density
Prior art date
Application number
MYPI20091948A
Inventor
Srinivas V Veeravalli
Vijay Kiyawat
Original Assignee
Dura Line India Pvt Ltd
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 Dura Line India Pvt Ltd filed Critical Dura Line India Pvt Ltd
Publication of MY180662A publication Critical patent/MY180662A/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
    • H02G3/0462—Tubings, i.e. having a closed section
    • H02G3/0487—Tubings, i.e. having a closed section with a non-circular cross-section

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Details Of Indoor Wiring (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

The invention (Fig.1) provides for a method of designing spiral ribs for a duct used in cable blowing comprising the steps of selecting an apex angle of rib in the range of 80 to 120 degrees; determining the longitudinal spacing between the ribs from the cable thickness and mass; deriving a range of values for nb density and the helix angle from the longitudinal spacing, determining the optimum rib density and helix angle from the range of values by determining net axial force for the range of values; determining the optimum rib height for the optimum rib density and helix angle, such that a reduction in friction between the Cable and the duct without a significant or no reduction in axial force is achieved. (Figure 1)
MYPI20091948A 2006-06-14 2007-06-06 A duct with internal spiral ribs MY180662A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IN1409DE2006 2006-06-14

Publications (1)

Publication Number Publication Date
MY180662A true MY180662A (en) 2020-12-04

Family

ID=38832215

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI20091948A MY180662A (en) 2006-06-14 2007-06-06 A duct with internal spiral ribs

Country Status (2)

Country Link
MY (1) MY180662A (en)
WO (1) WO2007144899A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX2021007549A (en) 2020-06-18 2021-12-20 United Pipeline Systems Inc System and method for installing pipe liners.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2706197B1 (en) * 1993-06-07 1995-07-28 Trefimetaux Grooved tubes for heat exchangers of air conditioning and refrigeration equipment, and corresponding exchangers.
FR2837270B1 (en) * 2002-03-12 2004-10-01 Trefimetaux GROOVED TUBES FOR REVERSIBLE USE FOR HEAT EXCHANGERS

Also Published As

Publication number Publication date
WO2007144899A2 (en) 2007-12-21
WO2007144899A3 (en) 2009-04-16

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