WO2005122201A1 - Leistungsschalter - Google Patents
Leistungsschalter Download PDFInfo
- Publication number
- WO2005122201A1 WO2005122201A1 PCT/CH2005/000295 CH2005000295W WO2005122201A1 WO 2005122201 A1 WO2005122201 A1 WO 2005122201A1 CH 2005000295 W CH2005000295 W CH 2005000295W WO 2005122201 A1 WO2005122201 A1 WO 2005122201A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- circuit breaker
- exhaust
- area
- volume
- breaker according
- Prior art date
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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
-
- 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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H2033/888—Deflection of hot gasses and arcing products
Definitions
- the invention proceeds from a circuit breaker in accordance with the 'preamble of claim 1.
- a circuit breaker which can be used in a high voltage electrical network.
- This circuit breaker has a rotationally symmetrical formed quenching chamber, which is filled with an electronegative gas, for example with SF 6 gas, as extinguishing and insulating medium.
- the quenching chamber has an arc chamber in which the quenching and insulating medium is ionized and heated by the disconnecting arc burning between two power contacts. A portion of this heated extinguishing and insulating medium flows through an insulating nozzle into an exhaust volume, where it is cooled and deflected by means of a cooling device.
- a mixing of the heated extinguishing and insulating medium with the existing in the exhaust cold gas is possible only to a relatively small extent, since the vast majority of the cold gas is pushed out of the heated extinguishing and insulating medium from the exhaust before a significant mixing is possible.
- the flow resistance that the cooling device opposes the flowing gas is kept as low as possible in this circuit breaker.
- the cooled and Deionized Losch- and insulating medium is then again for further switching operations available.
- the cooling device has Kuhlbleche, which are elaborately formed stromungsgunstig and must be kept consuming, also they are made of a burn-resistant and therefore relatively expensive metal. Cooling of the heated extinguishing and insulating medium by mixing with cold gas takes place here only to a very limited extent.
- the invention as characterized in the independent claim solves the problem of providing a circuit breaker with significantly increased breaking capacity, the exhaust is relatively simple and inexpensive and which cools the hot gases particularly effective.
- the circuit breaker according to the invention has, in an enclosure filled with an insulating gas, at least one, at least two, extending along a longitudinal axis and constructed substantially radially symmetrically
- the arc chamber is in operative connection with at least one exhaust volume having an exhaust volume.
- the exhaust is designed for the cooling of hot gases generated during cut-outs, and is connected to a Loschhuntvolumen. In the area of the exhaust, at least one, the flow resistance of the hot gases increasing, compulsorily generated recirculation area is provided.
- the hot gases flow out of the arc chamber into an intermediate volume, in which at least one, in the flow of hot gases projecting, baffle plate is provided.
- a jet nozzle exhibiting, laval nozzle-like flow tube is attached, which leads into the connected to the quenching chamber volume exhaust volume.
- circuit breaker means are provided in the exhaust volume, which deflect the flow of hot gases by up to 180 °.
- a variant of the circuit breaker which is suitable for extremely large cut-off power has openings in the flow tube which allow additional gas to enter the flow tube, so that at least a second, forcibly generated recirculation area is formed, in which the hot gases are mixed and cooled particularly effectively with colder gas.
- FIG. 1 shows a partial section through a greatly simplified and schematically illustrated quenching chamber of a first embodiment of an encapsulated circuit breaker
- FIG. 2 shows a greatly simplified and schematically illustrated partial section through the exhaust area of the extinguishing chamber according to Fig.l,
- Fig. 3 shows a greatly simplified and schematically illustrated partial section through a further exhaust variant of the extinguishing chamber according to Fig.l, and
- Fig. 4 shows a variant of a simplified exhaust details shown.
- a circuit breaker may have one or more series-connected, filled with an insulating gas extinguishing chambers that operate according to one of the conventional switching principles, so for example as a self-baffle, as a self-baffle with at least one additional compression piston assembly or as a simple compression piston switch.
- the circuit breaker may be formed as an encapsulated circuit breaker, wherein as the encapsulating material metal or plastic can be selected.
- the circuit breaker can thus be designed, for example, as an outdoor switch, as part of a metal-enclosed gas-insulated switchgear or as a dead tank breaker.
- 1 shows a partial section through the greatly simplified and schematically illustrated quenching chamber 1 of a first embodiment of a circuit breaker during a turn-off, wherein the usually present in addition to the power current path shown parallel nominal current path is not shown.
- this quenching chamber 1 is of rotationally symmetrical design and extends along a longitudinal axis 2.
- the quenching chamber 1 is enclosed in a gastight manner by a concentrically arranged and grounded metal encapsulation 3 here.
- the electrically insulating holders, which fix the quenching chamber 1 in the metal enclosure 3, are not shown.
- the quenching chamber 1 has an arc chamber 4, in which an arc 7 burns during the switch-off between two rod-shaped power contacts 5 and 6.
- the power contact 5 is formed here as a movable contact, which moves axially in the direction of an arrow 8 during the turn-off, the power contact 6, however, is designed as a stationary contact, but its mechanical attachment is the Not shown for simplicity.
- the arc chamber 4 is bounded in the radial direction by the inner wall of an insulating nozzle 9.
- the insulating nozzle 9 opens in the direction of an intermediate volume 10.
- the insulating nozzle 9 may be fixedly formed, but it may also, as stated here, be movable together with the power contact 5.
- the intermediate volume 10 is bounded in the radial direction by a metallic wall 14.
- a pipe socket 15 On the insulating nozzle 9 side facing a pipe socket 15 is added to the wall 14 in the axial direction, which has a smaller diameter than the wall 14 to the outside limited intermediate volume 10.
- the outside of the insulating 9 is guided axially
- a constriction 16 is added to the wall 14 of the intermediate volume 10, which limits the intermediate volume 10 on this side.
- the transition from the wall 14 to the constriction 16 has a radius R. This radius R supports the deflection of the hot gases in the intermediate volume 10.
- a radius R in the range of 25mm is selected, whereby an exit angle ⁇ of the cooled exhaust gases of about 30 ° is reached.
- the constriction 16 merges into an axially extending, lavaldusenartig formed metallic flow tube 17, which on the intermediate volume 10 side facing a Düsenengnis 18, and which opens the exhaust volume 12 to.
- the end of the flow pipe 17 in the direction of the exhaust volume 12 is referred to as the outlet edge 17a.
- the lavaldusenartig formed flow pipe 17 thus connects the intermediate volume 10 with the exhaust volume 12th
- the exhaust volume 12 is limited by a stromungsgunstig designed metallic Auspuffgehause 19, which deflects the flow of hot gas by up to 180 °.
- a cylindrically formed part of Auspuffgehauses 19 has approximately the same outer diameter as the intermediate volume 10 and surrounds the flow tube 17, wherein between this and the Auspuffgehause 19, a channel 20 with annular cross-section for the current, already slightly cooled hot gas remains.
- Between the outer wall of the constriction 16 and an end edge 21 of the Auspuffgehauses 19 remains a zylmderformige exit surface through which the further cooled gas flows obliquely into a Loschhuntvolumen 22.
- the insulating gas in the Loschhuntvolumen 22 surrounds the previously described active parts of the Loschhunt 1 and isolates them against the metal enclosure.
- the length L3 of the flow tube 17 is advantageously chosen so that it corresponds to three times the diameter of the Dusenengnisses 18. However, a satisfactory exhaust performance is also achieved when the length L3 of the flow tube 17 is selected to be in the range of two to three times the diameter of the nozzle duct 18.
- FIG. 2 shows a greatly simplified and schematically illustrated partial section through the exhaust area of the Loschhunt according to Fig.l.
- a flat F D denotes the exit surface of the hot gases from the Isolierduse 9, and the inlet surface of the hot gases in the intermediate volume 10, the baffle plate 11 has approximately the same effective area as the flat F.
- a circular ring surface F A represents the area which lies between the baffle plate 11 and the wall 14.
- a flat F E g bt the cross section of the Dusenengnisses 18 of the flow tube 17 at.
- a flat Fi indicates the outlet cross section from the flow pipe 17, in which case the surface Fi is approximately the same size as the surface F D.
- a circular ring surface F 2 represents the area which lies between the outlet edge 17 a of the flow pipe 17 and the exhaust housing 19.
- a circular ring surface F ⁇ indicates the cross section which lies between the throat of the flow pipe 17 and the imaginary extension of the exhaust house 19. Between the outer wall of the constriction 16 and the end edge 21 of the Auspuffgehauses 19 remains a zylmderformige exit surface F.).
- the Flat F D , the surface of the baffle plate 11 and the flat Fi formed approximately the same size.
- the annular surface F A around the baffle plate 11 is formed to have 30 to 80% of the area F D.
- the surfaces F E and F are typically dimensioned to be in the range of 50 to 70% of F D.
- the annular surface F 3 is approximately the same size as the surface F D , and also the exit surface Fj.
- FIG. 1 Further design possibilities of the described exhaust area are shown in FIG.
- the variants described below can, depending on the required breaking capacity of the Loschhunt 1, each used alone or combined in twos or threes.
- the distance between the openings 24 should generally be greater than twice the diameter Di in the range.
- additional openings 25 may be provided downstream of the nozzle groove 18. These openings 25 can be shaped differently, they connect the interior of the flow tube 17 with the annular volume outside of the flow tube 17.
- a strom ⁇ ngsgunstig formed deflection 26 are fixed, which the deflection of the hot gas flow by 180 facilitated.
- the Fig. Shows a further embodiment variant of the baffle plate 11 in plan view and the right thereof as a partial section.
- the circular metallic baffle plate 11 is provided with uniformly distributed on the circumference and approximately the same depth narrow cuts 27.
- the remaining between the incisions 27 remaining wings 28 are in each case bent windradartig about 30 °.
- the device for connecting the baffle plate 11 with the power contact 6 is not shown.
- the arrow 13 indicates the general flow of the hot gases generated by the arc 7 through the exhaustion of the Loschhunt 1. After the outflow of hot gases from the Isolierduse 9 meet these on the baffle plate 11 and are slightly deflected. The baffle plate 11 absorbs thermal energy from the hot gases, as well as the wall 14. By this cooling, the volume of the flowing hot gas is slightly reduced. The hot gas then flows around the baffle plate 11 and impinges on the constriction 16, where it is deflected again and further cooled by energy delivery to the material of the constriction 16 and thus reduced in volume.
- the portion of the intermediate volume 10 which lies downstream of the baffle plate 11 serves in part as a
- Recirculation zone 29 for the streaming gas.
- the area of the recirculation area 29 is represented schematically by a dashed arrow 30.
- an effective flow is formed, which leads to a particularly good mixing of the hot gases with the coolant located in the intermediate volume 10 Insulating gas leads.
- Insulating gas leads.
- the essential part of the thermal energy is withdrawn from the hot gas.
- the turbulences occurring in the edge regions of the intermediate volume 10 improve the heat transfer from the hot gas into the material of the boundaries, their share of the cooling effect of the exhaust is generally not significant.
- This mixed and further cooled gas then flows into the flow tube 17, wherein it is first concentrated by the nozzle groove 18. Since the flow tube 17 widens lavaldusenartig after the nozzle groove 18, there increases the flow velocity of the gas, so that a negative pressure is created, which sucks the gas through the nozzle groove 18 through. This effect advantageously increases the intensity of the gas mixing in the area of the recirculation area 29 located downstream of the baffle plate 11. Heat energy from the hot gases is also taken up and removed through the wall of the flow tube 17.
- the hot gases initially flow away from the arc chamber 4 in a predominantly axial direction, but after leaving the flow pipe 17 they are here deflected by the exhaust housing 19 by 180 ° and guided outside the flow pipe 17 opposite to the original flow direction.
- the metallic Auspuffgehause 19 also absorbs heat energy, which it extracts the hot gas. Eddies, which inevitably arise during the deflection of the gas, improve this heat transfer.
- the construction length of the exhaust area is shortened, which has an advantageous reduction and thus a cheapening of the Loschhunt 1 result.
- the further cooled gas then flows between the outside of the flow tube 17 and the exhaust housing 19 in the direction of extinguishing chamber volume 22.
- the flowed through annular surface F 2 at entry into this area is smaller than the annular surface F 3 , or the cylindrical outlet surface F 4 , when flowing out of this exhaust area, so that the flow velocity of the gas is significantly reduced, whereby in this area, the pressure of the gas increases slightly.
- the transition from the constriction 16 to the wall 14 has a radius R.
- a radius R is selected in the range of 25mm, whereby an exit angle a of the cooled exhaust gases into the quenching chamber volume 22 of about 30 ° is reached.
- the embodiments of the quenching chamber 1 shown in Figure 3 improve the performance of the exhaust.
- the mounted in front of the baffle plate 11 perforated plate 23 improves the cooling effect of the baffle plate 11 quite essential.
- the openings 25 in the flow tube 17 since the gas pressure outside the flow tube 17 is higher than in the interior of the same, a Entering the slightly cooler gases from outside into the interior of the flow tube 17.
- the openings 25 in the flow tube 17 and in the channel 20 is formed here as a result, another
- the m inserted the Auspuffgehause 19 deflection 26 advantageously reduces the flow resistance during deflection of the gas flow in the opposite direction.
- the deflection 26 withdraws the gas stream further heat energy.
- the circular metallic baffle plate 11 with circumferentially distributed, radial narrow cuts 27, as shown in Figure 4, causes a particularly effective turbulence of the hot gas stream.
- the hot gas stream passing directly through the cuts 27 causes in the recirculation zone 29 behind the baffle plate 11 an execution of the baffle plate 11 described against the others an even more intensive mixing of hot and cold gas and thus an even more effective cooling of the hot gases in this area.
Landscapes
- Circuit Breakers (AREA)
- Saccharide Compounds (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007513647A JP4643634B2 (ja) | 2004-06-07 | 2005-05-25 | サーキット・ブレーカ |
CN2005800185562A CN1965382B (zh) | 2004-06-07 | 2005-05-25 | 功率开关 |
US11/634,076 US7402771B2 (en) | 2004-06-07 | 2006-12-06 | Circuit breaker |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04405351A EP1605485B1 (de) | 2004-06-07 | 2004-06-07 | Leistungsschalter |
EP04405351.0 | 2004-06-07 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/634,076 Continuation US7402771B2 (en) | 2004-06-07 | 2006-12-06 | Circuit breaker |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005122201A1 true WO2005122201A1 (de) | 2005-12-22 |
Family
ID=34932137
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH2005/000295 WO2005122201A1 (de) | 2004-06-07 | 2005-05-25 | Leistungsschalter |
Country Status (7)
Country | Link |
---|---|
US (1) | US7402771B2 (de) |
EP (1) | EP1605485B1 (de) |
JP (1) | JP4643634B2 (de) |
CN (1) | CN1965382B (de) |
AT (1) | ATE369614T1 (de) |
DE (1) | DE502004004571D1 (de) |
WO (1) | WO2005122201A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8664558B2 (en) | 2008-08-25 | 2014-03-04 | Siemens Aktiengesellschaft | High-voltage power switch with a switch gap |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE502005009041D1 (de) | 2005-09-26 | 2010-04-01 | Abb Technology Ag | Hochspannungsschalter mit verbesserter Schaltleistung |
EP1835520B2 (de) | 2006-03-14 | 2013-12-18 | ABB Technology AG | Schaltkammer für einen gasisolierten Hochspannungsschalter |
EP1930929B2 (de) * | 2006-12-06 | 2013-01-30 | Abb Research Ltd. | Hochspannungsschalter mit einem isoliergasgefüllten Metallbehälter |
EP2198443B1 (de) * | 2007-10-16 | 2011-02-02 | ABB Research Ltd. | Gasisolierter hochspannungs-leistungsschalter mit einem von einem überstromventil gesteuerten entlastungskanal |
EP2120244A1 (de) | 2008-05-15 | 2009-11-18 | ABB Technology AG | Hochspannungs-Leistungsschalter |
DE102009009451A1 (de) | 2009-02-13 | 2010-08-19 | Siemens Aktiengesellschaft | Schaltgeräteanordnung mit einer Schaltstrecke |
DE102009009450A1 (de) * | 2009-02-13 | 2010-08-19 | Siemens Aktiengesellschaft | Schaltgeräteanordnung |
CN102013365B (zh) * | 2011-01-07 | 2013-05-01 | 上海诺雅克电气有限公司 | 断路器的灭弧装置 |
DE102011083594A1 (de) | 2011-09-28 | 2013-03-28 | Siemens Aktiengesellschaft | Leistungsschalterunterbrechereinheit |
US9673006B2 (en) | 2015-01-23 | 2017-06-06 | Alstom Technology Ltd | Exhaust diffuser for a gas-insulated high voltage circuit breaker |
CN109935495B (zh) * | 2018-11-09 | 2024-04-30 | 许继(厦门)智能电力设备股份有限公司 | 一种灭弧室绝缘辅助结构 |
JPWO2020157833A1 (ja) * | 2019-01-29 | 2021-02-18 | 三菱電機株式会社 | ガス遮断器 |
KR102362783B1 (ko) * | 2020-03-09 | 2022-02-11 | 엘에스일렉트릭(주) | 가스절연 개폐장치 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2345375A (en) * | 1942-12-19 | 1944-03-28 | Gen Electric | Electric circuit breaker |
US4471187A (en) * | 1981-09-30 | 1984-09-11 | Sprecher & Schuh Ag | Gas-blast switch |
US4684773A (en) * | 1984-10-10 | 1987-08-04 | Bbc Brown, Boveri & Company, Limited | Gas-blast switch |
US6646850B1 (en) * | 1999-06-11 | 2003-11-11 | Siemens Aktiengesellschaft | High-voltage power breaker having an outlet flow channel |
WO2003096366A1 (de) * | 2002-05-08 | 2003-11-20 | Siemens Aktiengesellschaft | Elektrisches schaltgerät mit einer kühleinrichtung |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5362180A (en) * | 1976-11-17 | 1978-06-03 | Tokyo Shibaura Electric Co | Single pressure type gas breaker |
CH645753A5 (en) | 1979-05-22 | 1984-10-15 | Sprecher & Schuh Ag | Gas-blast circuit breaker |
DE19832709C5 (de) * | 1998-07-14 | 2006-05-11 | Siemens Ag | Hochspannungsleistungsschalter mit einer Unterbrechereinheit |
DE19953560C1 (de) | 1999-11-03 | 2001-06-07 | Siemens Ag | Druckgas-Leistungsschalter |
DE10156535C1 (de) * | 2001-11-14 | 2003-06-26 | Siemens Ag | Leistungsschalter |
DE10221580B3 (de) * | 2002-05-08 | 2004-01-22 | Siemens Ag | Unterbrechereinheit eines Hochspannungs-Leistungsschalters |
-
2004
- 2004-06-07 DE DE502004004571T patent/DE502004004571D1/de not_active Expired - Lifetime
- 2004-06-07 AT AT04405351T patent/ATE369614T1/de not_active IP Right Cessation
- 2004-06-07 EP EP04405351A patent/EP1605485B1/de not_active Expired - Lifetime
-
2005
- 2005-05-25 WO PCT/CH2005/000295 patent/WO2005122201A1/de active Application Filing
- 2005-05-25 JP JP2007513647A patent/JP4643634B2/ja not_active Expired - Fee Related
- 2005-05-25 CN CN2005800185562A patent/CN1965382B/zh active Active
-
2006
- 2006-12-06 US US11/634,076 patent/US7402771B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2345375A (en) * | 1942-12-19 | 1944-03-28 | Gen Electric | Electric circuit breaker |
US4471187A (en) * | 1981-09-30 | 1984-09-11 | Sprecher & Schuh Ag | Gas-blast switch |
US4684773A (en) * | 1984-10-10 | 1987-08-04 | Bbc Brown, Boveri & Company, Limited | Gas-blast switch |
US6646850B1 (en) * | 1999-06-11 | 2003-11-11 | Siemens Aktiengesellschaft | High-voltage power breaker having an outlet flow channel |
WO2003096366A1 (de) * | 2002-05-08 | 2003-11-20 | Siemens Aktiengesellschaft | Elektrisches schaltgerät mit einer kühleinrichtung |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8664558B2 (en) | 2008-08-25 | 2014-03-04 | Siemens Aktiengesellschaft | High-voltage power switch with a switch gap |
Also Published As
Publication number | Publication date |
---|---|
DE502004004571D1 (de) | 2007-09-20 |
JP2008502098A (ja) | 2008-01-24 |
EP1605485B1 (de) | 2007-08-08 |
EP1605485A1 (de) | 2005-12-14 |
US7402771B2 (en) | 2008-07-22 |
US20070075044A1 (en) | 2007-04-05 |
JP4643634B2 (ja) | 2011-03-02 |
CN1965382B (zh) | 2010-05-05 |
CN1965382A (zh) | 2007-05-16 |
ATE369614T1 (de) | 2007-08-15 |
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