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 cablesInfo
- 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
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)
- Processing Of Terminals (AREA)
- Examining Or Testing Airtightness (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.
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) |
-
1931
- 1931-06-02 BE BE380227D patent/BE380227A/xx unknown
- 1931-07-22 GB GB20983/31A patent/GB369119A/en not_active Expired
-
1934
- 1934-08-30 GB GB24972/34A patent/GB421520A/en not_active Expired
- 1934-09-14 FR FR778494D patent/FR778494A/en not_active Expired
- 1934-10-14 DE DES115734D patent/DE629902C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB421520A (en) | 1934-12-21 |
| BE380227A (en) | 1931-07-31 |
| FR778494A (en) | 1935-03-16 |
| DE629902C (en) | 1936-05-15 |
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