GB369119A - Improvements in or relating to apparatus for the localization of oil leakages in the lead sheaths of oil-filled electric cables - Google Patents

Improvements in or relating to apparatus for the localization of oil leakages in the lead sheaths of oil-filled electric cables

Info

Publication number
GB369119A
GB369119A GB20983/31A GB2098331A GB369119A GB 369119 A GB369119 A GB 369119A GB 20983/31 A GB20983/31 A GB 20983/31A GB 2098331 A GB2098331 A GB 2098331A GB 369119 A GB369119 A GB 369119A
Authority
GB
United Kingdom
Prior art keywords
oil
cables
reservoirs
cable
leakages
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.)
Expired
Application number
GB20983/31A
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.)
Pirelli and C SpA
Original Assignee
Pirelli SpA
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 Pirelli SpA filed Critical Pirelli SpA
Publication of GB369119A publication Critical patent/GB369119A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2838—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for cables

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Gas Or Oil Filled Cable Accessories (AREA)
  • Cable Accessories (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Processing Of Terminals (AREA)

Abstract

369,119. Locating leakages in oilfilled cables. SOC. ITALIANA PIRELLI, 21, Via Fabio Filzi, Milan, Italy. July 22, 1931, No. 20983. Convention date, April 15. [Class 99 (ii).] A leakage of oil through a hole in the lead sheath of one of three parallel cables 1, 2, 3 constituting a line is located by connecting the leaky cable 1 say to one of the sound cables 2 by a connection m at the cable joints A<1>, A<11> respectively, and then connecting oil reservoirs S<1>, S<11> to the other ends of the said cables at the joints A<1>o, A<11>o. The position of the leak P is determined by maintaining an equal level of oil in the two reservoirs, noting the quantities Q1, Q2 flowing from each in a definite time, and then substituting in the formula where L, x respectively are the lengths of the two cables and the distance of the leak from the joint A<1>. Variations in the volume of oil in the reservoirs due to variations in temperature during testing are compensated for by connecting a reservoir S<111> to the third cable 3. Several devices are described for maintaining a constant level of oil in the reservoirs. Specifications 255,033 and 268,27], [both in Class 38 (i), Electric couplings &c.], are referred to.
GB20983/31A 1933-10-13 1931-07-22 Improvements in or relating to apparatus for the localization of oil leakages in the lead sheaths of oil-filled electric cables Expired GB369119A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT421520X 1933-10-13

Publications (1)

Publication Number Publication Date
GB369119A true GB369119A (en) 1932-03-17

Family

ID=11253921

Family Applications (2)

Application Number Title Priority Date Filing Date
GB20983/31A Expired GB369119A (en) 1933-10-13 1931-07-22 Improvements in or relating to apparatus for the localization of oil leakages in the lead sheaths of oil-filled electric cables
GB24972/34A Expired GB421520A (en) 1933-10-13 1934-08-30 Improvements in or relating to electric cable systems

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB24972/34A Expired GB421520A (en) 1933-10-13 1934-08-30 Improvements in or relating to electric cable systems

Country Status (4)

Country Link
BE (1) BE380227A (en)
DE (1) DE629902C (en)
FR (1) FR778494A (en)
GB (2) GB369119A (en)

Also Published As

Publication number Publication date
FR778494A (en) 1935-03-16
GB421520A (en) 1934-12-21
DE629902C (en) 1936-05-15
BE380227A (en) 1931-07-31

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