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1. 发明专利

JP2001155595A BUFFER GAS BREAKER 失效
公开(公告)号：JP2001155595A
公开(公告)日：2001-06-08
申请号：JP33418799
申请日：1999-11-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： HORINOUCHI KATSUHIKO , NAKAYAMA YASUSHI , OGURA KENTARO
IPC分类号： H01H33/91 , H01H33/82
摘要： PROBLEM TO BE SOLVED: To provide a buffer gas breaker capable of blowing arc-extinguishing gas to the arc effectively regardless of intensity of breaking current and timing of circuit opening. SOLUTION: Inside the buffer cylinder is partitioned to a mechanical buffer chamber in the buffer piston side and a thermal buffer chamber in the stationary contact side. A channel which communicates the mechanical buffer chamber and opens near the opening of the thermal buffer chamber is located around the movable contactor. The breaker is equipped with a check valve permitting the move of the arc-extinguishing gas from the mechanical buffer chamber to the thermal buffer chamber when the pressure of the gas in both chambers reaches the respective predetermined values, and a channel valve which turns open when the stationary contact and the movable contact between the channel and the mechanical buffer chamber are separated by a distance more than predetermined.

2. 发明专利

JPH11120876A PUFFER TYPE GAS-BLAST CIRCUIT BREAKER 失效
公开(公告)号：JPH11120876A
公开(公告)日：1999-04-30
申请号：JP28367197
申请日：1997-10-16
申请人： TOSHIBA CORP
发明人： MIZOGUCHI HITOSHI , MORI TADASHI , KONO HIROMICHI , SUZUKI KATSUMI , TOYODA MITSURU
IPC分类号： H01H33/82 , H01H33/91
摘要： PROBLEM TO BE SOLVED: To provide high cutting performance by preventing the lowering of a rising value of the pressure of thermal pressure rising chamber at a zero point of a current and preventing the lowering of density after the cutting. SOLUTION: This device has a fixed contact part 10 and a movable contactor part 20, arrange facing opposite to each other in a container sealed with the arc extinguishing gas, and the fixed contact part 10 has a fixed arc contact 1, and the movable contact part 20 has an operation rod 3, a movable cylinder 4, a movable arc contact 5, a nozzle 7, a small diameter piston 8d and a large diameter piston 8a, and the movable cylinder part 4a is provided with a small inner diameter part 4a at an intermediate part in the axial direction thereof, and a thermal pressure rising chamber space S1 is provided in front of the intermediate small inner diameter part 4a, and a rear compression chamber space S2 is provided, and the thermal pressure rising chamber space is heated for pressure rise by the flow of the high temperature gas from an arc, and while compressed with the small diameter piston part, and at the same time, the compression chamber space is compressed by the large diameter piston part, and a groove 4b having an appropriate length is provided in the axial direction of the inner diameter part of the compression chamber space, and the gas flow in the compression chamber space is discharged on the way of the electrode opening operation, and the compression chamber is compressed again when the electrode opening operation is concluded.

3. 发明专利

JPH1027532A PUFFER TYPE GAS BLAST CIRCUIT BREAKER 失效
公开(公告)号：JPH1027532A
公开(公告)日：1998-01-27
申请号：JP18037396
申请日：1996-07-10
申请人： NISSIN ELECTRIC CO LTD
发明人： KANEMAN NAOHIRO , AKUTSU KATSUNORI
IPC分类号： H01H33/70 , H01H33/82 , H01H33/91
摘要： PROBLEM TO BE SOLVED: To provide a puffer type gas blast circuit breaker which can enlarge the gas pressure boosting using a simple configuration. SOLUTION: When a movable contacting piece 3 separates from a stationary contacting piece 1 in cutting off the current, arcs 11 are generated between the two contacting pieces. When current flows in a coil 7, a magnetic field 12 is generated, and thereby the generated arc is rotated. Because of arc rotation within a pressure boosting chamber 10, much gas is heated to cause boosting of the gas pressure, which rises steeply, and when the stationary contacting piece slips off from a nozzle, the gas blows to the arc satisfactorily. When the gas pressure in the puffer chamber rises over the gas pressure in the pressure boosting chamber, a check valve 9 is opened, and the high pressure gas in the puffer chamber blows to between the contacting pieces. After the completion of arc cutting-off, the gas not exposed to the arcs in the puffer chamber will blow to between the contacting pieces, so that the inter-electrode insulation after the cutting-off can be maintained.

4. 发明专利

JPH08212882A GAS-BLAST LOAD-BREAK SWITCH 失效
公开(公告)号：JPH08212882A
公开(公告)日：1996-08-20
申请号：JP1661295
申请日：1995-02-03
申请人： FUJI ELECTRIC CO LTD
发明人： KANETAKA YASUHIKO , TSUCHIKAWA MIYUKI
IPC分类号： H01H33/70 , H01H33/82
摘要： PURPOSE: To eliminate the internal pressure lowering of an arc extinguishing chamber in the initial stage of opening and sufficiently raise the pressure in the chamber by mounting a check valve for stopping only the gas flow carried from the inner part of the chamber to the outside on an intake hole formed in the chamber. CONSTITUTION: A check valve 23 formed of a tension spring 22, a release valve 20 and a support bar 21 is mounted on an intake hole 2A formed in an arc extinguishing chamber 17. When the outside of the chamber 17 is higher than the internal pressure of the chamber 17, the valve 20 is pushed down to carry the outside air into the chamber 17. When the outside of the chamber 17 is lower than the internal pressure, the valve 20 is pushed up to block the hole 2A. Namely, the hole 2A extending from the inner part of the chamber 17 to the outside is provided, and the valve 23 for stopping the gas flow only from the inner part of the chamber 17 to the outside is mounted on the hole 2A, whereby the gas is supplied from the outside into the chamber 17 through the hole 2A when the pressure of the chamber 17 is lowered in the initial stage of opening and closing to eliminate the pressure lowering of the chamber 17. On the other hand, since the pressure of the chamber is increased to close the valve 23 when the arc is developed, the pressure of the chamber 17 is further raised.

5. 发明专利

JPS6079628A OPENING AND CLOSING DEVICE 失效
公开(公告)号：JPS6079628A
公开(公告)日：1985-05-07
申请号：JP18791183
申请日：1983-10-07
申请人： TOSHIBA KK
发明人： YOTSUMOTO SHIYOUICHI , NAKADA KEIJI
IPC分类号： H01H33/82

6. 发明专利

JPS5856922B2 JPS5856922B2 - 失效
公开(公告)号：JPS5856922B2
公开(公告)日：1983-12-17
申请号：JP14251177
申请日：1977-11-28
申请人： Meidensha Kk
发明人： YAGO SATOSHI
IPC分类号： H01H33/82 , H01H31/14 , H01H31/16 , H01H33/70

7. 发明专利

JPS5418738B2 失效
公开(公告)号：JPS5418738B2
公开(公告)日：1979-07-10
申请号：JP7139672
申请日：1972-07-17
IPC分类号： H01H33/82 , H01H33/825

8. 发明专利

JPS5429069A GAS CIRCUIT BREAKER 失效
公开(公告)号：JPS5429069A
公开(公告)日：1979-03-03
申请号：JP9436977
申请日：1977-08-05
申请人： MITSUBISHI ELECTRIC CORP
发明人： TANAKA MASAHARU
IPC分类号： H01H33/70 , H01H33/82

9. 实用新型

JPS52119061U 失效
公开(公告)号：JPS52119061U
公开(公告)日：1977-09-09
申请号：JP2763576
申请日：1976-03-08
IPC分类号： H01H33/82 , H01H33/20 , H01H33/825

10. 实用新型

JPS5133967Y1 失效
公开(公告)号：JPS5133967Y1
公开(公告)日：1976-08-23
申请号：JP10117567
申请日：1967-12-01
IPC分类号： H01H33/70 , H01H33/82

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