GB624519A - Improvements in safety appliances for liquid immersed electric switches - Google Patents
Improvements in safety appliances for liquid immersed electric switchesInfo
- Publication number
- GB624519A GB624519A GB27706/46A GB2770646A GB624519A GB 624519 A GB624519 A GB 624519A GB 27706/46 A GB27706/46 A GB 27706/46A GB 2770646 A GB2770646 A GB 2770646A GB 624519 A GB624519 A GB 624519A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oil
- tank
- separator
- switch
- filter
- 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
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
- H01H33/57—Recuperation of liquid or gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/38—Textile inserts, e.g. cord or canvas layers, for tyres; Treatment of inserts prior to building the tyre
- B29D30/40—Chemical pretreatment of textile inserts before building the tyre
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/0042—Reinforcements made of synthetic materials
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
- Degasification And Air Bubble Elimination (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
624,519. Oil-break switches; switch cases. ETABLISSEMENTS MERLIN & GERIN. Sept. 16, 1946, Nos. 27706 and 27707. Convention dates, Sept. 17, 1945 and March 12, 1946. [Class 38(v)] To avoid the risk of explosion and fire due to arcing in an oil break switch under fault conditions, the cover 10 of a switch tank 1, Fig. 1, is connected by a comparatively large vent pipe 11 to a large filter 12 capable of filtering the gases evolved without causing undue back pressure. In Fig. 5, the tank 1 is mounted within an outer casing 2 and the space between them is used for the vanes 21 of a centrifugal separator, which removes much of the suspended oil from the gases which escape from the tank and pass through the separator, orifice 26 and the filter 12 mounted below the separator. The oil which separates out can be withdrawn through a cock 23, and a float-operated warning device may be provided to indicate the level of the oil in the base of the separator. Figs. 2-4, (not shown), illustrate modifications in which filters are mounted in extensions of the casing or tank above or below the tank, together with various methods of venting the tanks. In each case the filtering material may be quartzous sand, glass wool, asbestos, porous earth or filtering candles and may be impregnated with oil to improve its smoke retaining properties, or liquids, such as a solution of sodium hyposulphite or sodium carbonate to remove decomposition products such as chlorine. The Specification as open to inspection under Sect. 91 describes and illustrates a construction in which the bursting of a membrane in the bottom of the tank allows the oil to flow from the switch tank into the filter. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR972257X | 1945-09-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB624519A true GB624519A (en) | 1949-06-10 |
Family
ID=9515827
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB27706/46A Expired GB624519A (en) | 1945-09-17 | 1946-09-16 | Improvements in safety appliances for liquid immersed electric switches |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE467766A (en) |
DE (1) | DE972257C (en) |
FR (2) | FR919570A (en) |
GB (1) | GB624519A (en) |
NL (1) | NL127572C (en) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1573179A (en) * | 1919-07-10 | 1926-02-16 | Condit Electrical Mfg Corp | Electric switch |
US1551514A (en) * | 1921-02-08 | 1925-08-25 | John d | |
GB184666A (en) * | 1921-02-08 | 1922-08-24 | Gen Electric | Improvements in and relating to electric switches |
US1536852A (en) * | 1923-01-02 | 1925-05-05 | Gen Electric | Electric switch |
DE516779C (en) * | 1929-12-01 | 1931-01-27 | Voigt & Haeffner Akt Ges | Multi-phase oil switch with spring suspended on the lid |
DE542077C (en) * | 1930-07-09 | 1932-01-20 | Voigt & Haeffner Akt Ges | Oil switch with round oil tank, on the underside of which a weak point (membrane) is provided as overpressure protection |
DE592076C (en) * | 1932-12-23 | 1934-02-09 | Siemens Schuckertwerke Akt Ges | Fluid switch |
-
0
- NL NL127572D patent/NL127572C/xx active
- BE BE467766D patent/BE467766A/xx unknown
-
1945
- 1945-09-17 FR FR919570D patent/FR919570A/en not_active Expired
-
1946
- 1946-03-12 FR FR56171D patent/FR56171E/en not_active Expired
- 1946-09-16 GB GB27706/46A patent/GB624519A/en not_active Expired
-
1950
- 1950-07-06 DE DEM5063A patent/DE972257C/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL127572C (en) | |
FR56171E (en) | 1952-09-18 |
DE972257C (en) | 1959-06-18 |
FR919570A (en) | 1947-03-12 |
BE467766A (en) |
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