GB700895A - A device for the distribution of compressed air to an air-blast electric circuit-breaker and its isolator - Google Patents
A device for the distribution of compressed air to an air-blast electric circuit-breaker and its isolatorInfo
- Publication number
- GB700895A GB700895A GB4985/52A GB498552A GB700895A GB 700895 A GB700895 A GB 700895A GB 4985/52 A GB4985/52 A GB 4985/52A GB 498552 A GB498552 A GB 498552A GB 700895 A GB700895 A GB 700895A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- compressed air
- air
- blast
- pipe
- 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
- H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
- H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
- H01H33/32—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator pneumatic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86928—Sequentially progressive opening or closing of plural valves
- Y10T137/86992—With subsequent closing of first opened port
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/877—With flow control means for branched passages
- Y10T137/87708—With common valve operator
- Y10T137/87764—Having fluid actuator
Landscapes
- Fluid-Pressure Circuits (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
700,895. Air-blast switches. ETABLISSEMENTS MERLIN & GERIN SOC. ANON. Feb. 26, 1952 [April 4, 1951], No. 4985/52. Class 38(5) [Also in Group XXIX] In a valve arrangement to control the admission of the air blast to an air-blast circuit-breaker for arc extinction and compressed air to the operating motor of the isolator of the circuit-breaker in timed relationship, a trip coil 16 is energized to open a pilot valve 15. Compressed air then flows from an auxiliary reservoir 13, through a pipe 11, a channel 28 in a slide-valve 8, and a port 20 into a cylinder 5. A piston 4 is then forced down to open the main blast valve 2 and compressed air flows from a main reservoir 1 through pipe 3 to the arc-extinguishing chambers of the circuit-breaker (not shown). When the piston 4 has moved through a distance sufficient to ensure an adequate supply of air for arc-extinction, it uncovers a port 27 and compressed air flows from the cylinder 5 into a passage 24 in the valve 8. The pressure acting on the valve 8 initiates its movement to the left against the bias of a spring 9 and as soon as a channel 29 comes into partial alignment with the pipe 11, compressed air flows directly into the passage 24 from the auxiliary reservoir 13. This compressed air flows through the pipe 10 to the motor of the isolating switch (not shown) and forces the valve 8 to complete its travel to the left, where the channel 29 is in full alignment with the pipe 11 and the channel 28 is in alignment with ports 19, 21, through which,the cylinder 5 is vented to atmosphere. The pressure in the reservoir 1 closes the valve 2 and restores the piston 4, the air blast ceasing. When the isolating switch has completed its opening movement, it operates a limit switch (not shown) to open the circuit of the coil 16. The valve 15 closes and the spring 9 returns the valve 8 to its original position, the supply to the motor of the isolator ceasing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR700895X | 1951-04-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB700895A true GB700895A (en) | 1953-12-09 |
Family
ID=9052178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4985/52A Expired GB700895A (en) | 1951-04-04 | 1952-02-26 | A device for the distribution of compressed air to an air-blast electric circuit-breaker and its isolator |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2750464A (en) |
| GB (1) | GB700895A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4490590A (en) * | 1982-02-03 | 1984-12-25 | Mitsubishi Denki Kabushiki Kaisha | Switching system with grounding device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2523572A (en) * | 1944-03-18 | 1950-09-26 | Allis Chalmers Mfg Co | Control for a plurality of fluid pressure motors |
| US2450628A (en) * | 1944-11-30 | 1948-10-05 | Gen Electric | Circuit breaker operating system |
| US2521460A (en) * | 1947-07-11 | 1950-09-05 | Allis Chalmers Mfg Co | Gas blast breaker with separately actuated blast valve and tank filling valve |
-
1952
- 1952-02-26 GB GB4985/52A patent/GB700895A/en not_active Expired
- 1952-03-18 US US277326A patent/US2750464A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2750464A (en) | 1956-06-12 |
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