GB1502714A - Method of displacing oil to and fro along the ducts of oil-filled electric cables and pumping apparatus therefor - Google Patents
Method of displacing oil to and fro along the ducts of oil-filled electric cables and pumping apparatus thereforInfo
- Publication number
- GB1502714A GB1502714A GB8985/76A GB898576A GB1502714A GB 1502714 A GB1502714 A GB 1502714A GB 8985/76 A GB8985/76 A GB 8985/76A GB 898576 A GB898576 A GB 898576A GB 1502714 A GB1502714 A GB 1502714A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oil
- ducts
- pumping apparatus
- filled electric
- duct
- 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
-
- 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
- H02G15/00—Cable fittings
- H02G15/20—Cable fittings for cables filled with or surrounded by gas or oil
- H02G15/26—Expansion vessels; Locking heads; Auxiliary pipe-lines
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
Landscapes
- Transformer Cooling (AREA)
- Fluid-Pressure Circuits (AREA)
- Gas Or Oil Filled Cable Accessories (AREA)
Abstract
1502714 Cooling cables INDUSTRIE PIRELLI SpA 5 March 1976 [14 April 1975] 08985/76 Heading F4U [Also in Division H2] A method of displacing electrically insulating oil to and fro along at least three separate oilfilled ducts 10-12 joined togeIher at one end by a common pipe 35, said ducts being formed in one oil-filled electric cable or distributed over a plurality of oil-filled electric cables, comprise the step of operating pumping apparatus so that, in a continuous cycle of operation, oil is displaced along each duct in turn towards the said one end, with the oil which issues from each duct in turn passing back along the other two or more ducts. In the embodiment shown, each duct is in communication with a tank 13-15 subdivided into first and second variable volume chambers by a bellows 23-25. The cables are fitted with electrically insulating oil and the pumping apparatus with lubricating oil. The pumping apparatus includes a pump 16, a reservoir 42, and electrically operable valves 36-41 for controlling the continuous cycle of operation. In another embodiment (Fig. 4, not shown), further centrifugal pumps (46-48) are associated with each tank 13-15.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT22272/75A IT1037301B (en) | 1975-04-14 | 1975-04-14 | SYSTEM AND RELATIVE OPERATING METHOD FOR COOLING ELECTRIC CABLES WITH FLUID OIL |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1502714A true GB1502714A (en) | 1978-03-01 |
Family
ID=11193966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8985/76A Expired GB1502714A (en) | 1975-04-14 | 1976-03-05 | Method of displacing oil to and fro along the ducts of oil-filled electric cables and pumping apparatus therefor |
Country Status (9)
| Country | Link |
|---|---|
| AR (1) | AR209954A1 (en) |
| AT (1) | AT343197B (en) |
| BE (1) | BE840520A (en) |
| CA (1) | CA1055129A (en) |
| DE (1) | DE2616360C2 (en) |
| ES (1) | ES447178A1 (en) |
| GB (1) | GB1502714A (en) |
| IT (1) | IT1037301B (en) |
| ZA (1) | ZA761438B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113419416A (en) * | 2021-07-07 | 2021-09-21 | 中国石油天然气股份有限公司 | Redundant rotating equipment control system and method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS553888B1 (en) * | 1970-05-23 | 1980-01-28 | ||
| FR2129970B1 (en) * | 1971-03-24 | 1974-05-31 | Comp Generale Electricite |
-
1975
- 1975-04-14 IT IT22272/75A patent/IT1037301B/en active
-
1976
- 1976-03-05 GB GB8985/76A patent/GB1502714A/en not_active Expired
- 1976-03-09 ZA ZA761438A patent/ZA761438B/en unknown
- 1976-04-02 AR AR262771A patent/AR209954A1/en active
- 1976-04-02 CA CA249,482A patent/CA1055129A/en not_active Expired
- 1976-04-08 BE BE165956A patent/BE840520A/en not_active IP Right Cessation
- 1976-04-09 ES ES447178A patent/ES447178A1/en not_active Expired
- 1976-04-13 AT AT269476A patent/AT343197B/en not_active IP Right Cessation
- 1976-04-14 DE DE2616360A patent/DE2616360C2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113419416A (en) * | 2021-07-07 | 2021-09-21 | 中国石油天然气股份有限公司 | Redundant rotating equipment control system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| IT1037301B (en) | 1979-11-10 |
| ZA761438B (en) | 1977-03-30 |
| ES447178A1 (en) | 1977-06-16 |
| DE2616360A1 (en) | 1976-10-28 |
| AT343197B (en) | 1978-05-10 |
| AU1259276A (en) | 1977-10-06 |
| AR209954A1 (en) | 1977-06-15 |
| CA1055129A (en) | 1979-05-22 |
| DE2616360C2 (en) | 1985-10-31 |
| BE840520A (en) | 1976-08-02 |
| ATA269476A (en) | 1977-09-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PE20 | Patent expired after termination of 20 years |
Effective date: 19960304 |