US1771501A - Oil switch - Google Patents
Oil switch Download PDFInfo
- Publication number
- US1771501A US1771501A US156673A US15667326A US1771501A US 1771501 A US1771501 A US 1771501A US 156673 A US156673 A US 156673A US 15667326 A US15667326 A US 15667326A US 1771501 A US1771501 A US 1771501A
- Authority
- US
- United States
- Prior art keywords
- oil
- piston
- reservoir
- switch
- gases
- 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 - Lifetime
Links
Images
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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/68—Liquid-break switches, e.g. oil-break
Definitions
- This invention relates to improvements in oil switches or lnterrupters.
- O11 switches are known in whlch differently distributed cavities are arranged and com- Y municate with the interior of a reservoir, thus allowing the gases produced b the decomposition of the oil to expand.
- hese expansion chambers constitute sometimes a separate space above the oil surface to which the gases of decomposition are led.
- Switches are alsol known in which the said gases are led to the exterior by suitable communications and, again, arrangements areknown which pass a current of oil to the part where the arc forms, for the purpose of quenching the latter.
- This invention has for its object to provide an oil switch in which the three above mentioned features exist together, and it is characterized in that the movable contact or contacts of the switch are carried by a plunger -or piston which creates in its upward stroke a space, the volume of which increases proportionally to and simultaneously with the production of the gases of decomposition of the oil.
- the essential feature of this device is that the plunger or piston is hollow and filled with oil and is provided at its lower end with small openings which allow the oil to flow slowly into the reservoir as soon as the pivot is raised, in order to fill the said reservoir completely and consequently prevent the formation of an air space.
- a check valve is disposed in the gas outlet pipe to prevent the entrance of air into the reservoir.
- a cylindrical body 1 fixed to the base 3 and to the cover 4 forms the reservoir 2 in which moves a plunger or piston 8.
- the pisf ton is hollow and is provided with a rod 81 which is also hollow, the interiors of both the piston and rod being in communication with one another ,andwith the atmosphere through the end of the rod.
- the piston is provi ed with a contact 51, of which the corresponding contact 5 is carried b the base 3, and isalso rovided with smal openings 5" for the disc arge, of the oil.
- the cover 4 is rovided at its highest part with a pipe 41 or the discharge of the gases, which are led to the atmosphere by the pipe 4".
- a non-return valve 16 of any known type prevents the entrance of air even when there is a partial vacuum within the reservoir.-
- a pipe 15 puts the interior 17 of the cylinder 18 in which is disposed thel rod 81 into communication with the outlet 4". T he c lin- Yder 18 forms a guide for the rod 81 an for the piston while allowing the oil contained inthe chamber 17 to descend tothe lower chamber 2.
- an oil switch the combination of an oil reservoir, a contact within the reservoir fixed to the bottom thereof, a hollow piston movable vertically within the reservoir and having a plurality of ports at its lower end to enable oil to enter and fill the piston when the latter is lowered and to escape from the piston when raised, a hollow rod or stem connected to the piston and communicating with the interior thereof and with atmosphere, and a contact Ifixed to the lower end of the piston for coaction with the first. contact; said piston creating within the reservoir during its upward movement a gas space having at least the same volume as that of the gases produced by decomposition of the oil.
- an oil switch the combination of an oil reservoir, a contact Within the reservoir fixed to the bottom thereof, a hollow piston movable vertically within the reservoir and having a plurality of ports at its lower end to enable oil to enter and lill the piston when the latter is lowered and to escape from the piston when raised, f a hollowrod or stem connected tothe piston and communicating with the interior thereof and with atmos phere, a contact fixed to the lower end of the piston for coaction with the first contact, an outlet pipe for the gases of decomposition of the oil having its mouth below the level of the oil when the switch is closed but uncovered when the oil level drops consequent on the upward movement' of the piston. and a lcheck valve in said outlet 'pipe for preventing,Y
Landscapes
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Circuit Breakers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEM93341D DE447485C (de) | 1926-02-16 | 1926-02-16 | OElschalter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1771501A true US1771501A (en) | 1930-07-29 |
Family
ID=7322385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US156673A Expired - Lifetime US1771501A (en) | 1926-02-16 | 1926-12-23 | Oil switch |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1771501A (de) |
| CH (1) | CH122444A (de) |
| DE (1) | DE447485C (de) |
| GB (1) | GB266290A (de) |
-
1926
- 1926-02-16 DE DEM93341D patent/DE447485C/de not_active Expired
- 1926-09-29 CH CH122444D patent/CH122444A/de unknown
- 1926-10-22 GB GB26453/26A patent/GB266290A/en not_active Expired
- 1926-12-23 US US156673A patent/US1771501A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CH122444A (de) | 1927-09-16 |
| DE447485C (de) | 1927-07-27 |
| GB266290A (en) | 1927-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US1771501A (en) | Oil switch | |
| US2204365A (en) | Lifting platform | |
| US1998743A (en) | Electric circuit breaker | |
| US2580291A (en) | Circuit interrupter | |
| US1763058A (en) | lewis | |
| US2650972A (en) | Bushing type circuit interrupter | |
| US3076080A (en) | Fluid blast interrupting device for oil circuit breakers employing auxiliary contact | |
| US1603078A (en) | Electric switch | |
| US3291946A (en) | Gas-blast circuit breaker with means for throttling gas flow during a switching-out operation | |
| US3060294A (en) | Circuit interrupter | |
| US1902507A (en) | Electric circuit interrupter | |
| US3048683A (en) | Extinguishing chamber for oil circuit breaker | |
| US2471989A (en) | Fluid actuated load lifting and lowering mechanism | |
| SU408384A1 (ru) | Гидравлический буфер | |
| AT109920B (de) | Ölausschalter. | |
| US1524195A (en) | Pneumatic power hammer | |
| US2329951A (en) | Machine for casting metal under pressure | |
| DE451672C (de) | OElschalter mit einem die beweglichen Kontakte tragenden Tauchkolben | |
| US2131935A (en) | Molding machine | |
| US2703828A (en) | Circuit interrupter | |
| US1912176A (en) | Electric switch | |
| US2214518A (en) | Liquid-insulated electric circuit breaker | |
| US1552417A (en) | Electric switch | |
| US1953820A (en) | Electric circuit interrupter | |
| DE1023111B (de) | Loeschkammer fuer oelarme elektrische Leistungsschalter |