CN114300299A - Vacuum circuit breaker for gas-filled switch cabinet - Google Patents
Vacuum circuit breaker for gas-filled switch cabinet Download PDFInfo
- Publication number
- CN114300299A CN114300299A CN202111610216.6A CN202111610216A CN114300299A CN 114300299 A CN114300299 A CN 114300299A CN 202111610216 A CN202111610216 A CN 202111610216A CN 114300299 A CN114300299 A CN 114300299A
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- insulating
- circuit breaker
- vacuum circuit
- gas
- movable
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- 238000002955 isolation Methods 0.000 claims description 17
- 238000009413 insulation Methods 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 4
- 230000016507 interphase Effects 0.000 abstract description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The invention relates to a vacuum circuit breaker for an inflatable switch cabinet, which comprises an insulating cylinder, a vacuum arc extinguish chamber, a movable conducting rod, a connecting lever, an insulating pull rod, an operating shaft, an isolating cutter holder, a movable contact cutter and an isolating connecting lever, wherein the vacuum arc extinguish chamber is integrally formed in the insulating cylinder, the movable conducting rod is connected to the upper end of the vacuum arc extinguish chamber, the middle part of the connecting lever is hinged outside the insulating cylinder, two ends of the connecting lever are respectively connected with the movable conducting rod and the insulating pull rod, the outer end of the insulating pull rod is connected with the operating shaft, the isolating cutter holder is arranged at the lower end of the vacuum arc extinguish chamber, the movable contact cutter is arranged opposite to the isolating cutter holder, the isolating connecting lever is connected to the movable contact cutter, the insulating cylinder forms a switch cavity at the upper end of the vacuum arc extinguish chamber, and the movable conducting rod is arranged in the switch cavity and connected with the vacuum arc extinguish chamber. The conducting rod is arranged in the switch cavity of the insulating cylinder, so that the interphase distance between the three-phase movable conducting rods is increased, and the interphase insulating property under a smaller volume is ensured.
Description
Technical Field
The invention belongs to the technical field of high-voltage electrical equipment, and particularly relates to a vacuum circuit breaker for an inflatable switch cabinet.
Background
The gas-filled switch cabinet is a high-voltage switch cabinet in which a vacuum circuit breaker is installed in a gas tank filled with insulating gas, and the vacuum circuit breaker installed in the gas tank is ensuredThe insulation premise is small, and the volume is required to be as small as possible. However, the phases of the high-voltage vacuum circuit breaker used in the existing gas-filled switch cabinet need to keep a certain distance, which results in that the volume of the gas-filled switch cabinet can not be reduced, and the existing gas tank is generally filled with SF6Gas, SF6Although nontoxic gas, toxic impurities can be generated when the switch is discharged, the leakage can cause environmental pollution, and a vacuum circuit breaker with higher phase-to-phase insulation performance is needed in order to reduce the volume of the high-voltage switch cabinet.
Disclosure of Invention
In view of the above, the present invention is directed to a vacuum circuit breaker for a gas-filled switchgear having a good insulation effect and requiring a smaller installation space.
In order to achieve the purpose, the invention adopts a vacuum circuit breaker for an inflatable switch cabinet, which comprises an insulating cylinder, a vacuum arc extinguish chamber, a movable conducting rod, a connecting lever, an insulating pull rod, an operating shaft, an isolating cutter holder, a movable contact cutter and an isolating connecting lever, wherein the vacuum arc extinguish chamber is integrally formed in the insulating cylinder, the movable conducting rod is connected to the upper end of the vacuum arc extinguish chamber, the middle part of the connecting lever is hinged outside the insulating cylinder, two ends of the connecting lever are respectively connected with the movable conducting rod and the insulating pull rod, the outer end of the insulating pull rod is connected with the operating shaft, the isolating cutter holder is arranged at the lower end of the vacuum arc extinguish chamber, the movable contact cutter is arranged opposite to the isolating cutter holder, the isolating connecting lever is connected to the movable contact cutter, the insulating cylinder forms a switch cavity at the upper end of the vacuum arc extinguish chamber, the movable conducting rod is arranged in the switch cavity and connected with the vacuum arc extinguish chamber, and the moving direction of the insulating pull rod is opposite to the moving direction of the movable conducting rod.
The invention is further arranged in such a way that an insulating fixed shaft is arranged below the movable contact knife, a contact knife holder is arranged on the insulating fixed shaft, and the movable contact knife is hinged at the top end of the contact knife holder.
The invention is further provided with a conductive seat outside the switch cavity of the insulating cylinder, the crank arm is connected on the conductive seat, and the conductive seat is connected with the conductive bus.
The invention is further provided with a conductive sleeve on the movable conductive rod, a strip-shaped pressurizing hole is formed on the conductive sleeve, a connecting pin is formed on the movable conductive rod and penetrates through the pressurizing hole, and a spring is arranged between the conductive sleeve and the movable conductive rod.
The invention is further arranged in such a way that the operating shaft is arranged on one side of the insulating cylinder, the operating shaft is provided with a cam, and the outer end of the insulating pull rod is hinged at the top end of the cam.
The vacuum circuit breaker further comprises two side plates, two mounting plates are connected between the two side plates, mounting parts are formed on two sides of the insulating cylinder, the top ends of the mounting parts on the two sides are respectively connected to the two mounting plates, and the operating shaft is arranged on the outer side of one of the mounting plates.
The invention is further arranged that three fixing grooves are formed on the insulating fixing shaft, and the three contact knife holders are respectively inserted in the three fixing grooves. The contact tool holder is clamped through the fixing groove, so that the connection is stable, and the insulation is ensured.
The invention is further arranged that a hollow structure is formed on the insulation fixing shaft, and a plurality of outward-expanded insulation sheets are formed between the three fixing grooves.
The movable contact type electric knife switch is further characterized in that an isolation knife shaft is arranged between the side plates, an isolation crank arm seat is arranged on the isolation knife shaft, the isolation crank arm is connected to the top end of the isolation crank arm seat, one end of a triangular plate is connected to the isolation crank arm, and the other two ends of the triangular plate are connected with the movable contact knife.
The invention is further provided that the insulation pull rod connected on the mounting plate corresponding to the operation shaft is formed into an abdicating groove for abdicating the insulation pull rod.
The three-phase switch has the advantages that the movable conducting rods are arranged in the switch cavity of the insulating cylinder, so that the interphase distance between the three-phase movable conducting rods is increased, and the interphase insulating property under a smaller volume is ensured; the insulating fixed shaft is adopted to fix the contact knife holder, so that the action stability of the movable contact knife is ensured, and the service life is long; the insulating pull rod and the movable conducting rod realize steering through the crank arm, so that the overall height is reduced, and the installation space is smaller; the spring is arranged between the movable conducting rod and the conducting sleeve, so that pressure can be applied to the conducting sleeve, and the stable connection between the movable conducting rod and the static contact is ensured.
Drawings
FIG. 1 is a perspective view of an embodiment of the present invention.
Fig. 2 is a perspective view of an embodiment of the present invention.
Fig. 3 is a cross-sectional view of an embodiment of the present invention.
FIG. 4 is a schematic view of the assembly of a moving conductor bar according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1 to 4, a specific embodiment of the present invention is a vacuum circuit breaker for a gas-filled switchgear, comprising two side plates 10, three sets of insulating cylinders 1 arranged between the two side plates 10, vacuum arc-extinguishing chambers 2, a movable conducting rod 3, a connecting lever 4, an insulating pull rod 5, an isolating knife holder 6, a movable knife 7, an isolating connecting lever 8 and an operating shaft 9, wherein two mounting plates 101 are connected between the two side plates 10, mounting parts 12 are formed at both sides of the insulating cylinder 1, the top ends of the mounting parts 12 at both sides are respectively connected to the two mounting plates 101, the operating shaft 9 is arranged at the outer side of one of the mounting plates 101, the vacuum arc-extinguishing chambers 2 are integrally formed in the insulating cylinders 1, the movable conducting rod 3 is connected to the vacuum arc-extinguishing chambers 2, the insulating cylinder 1 forms a switch cavity 11 at the upper end of the vacuum arc-extinguishing chambers 2, the movable conducting rod 3 is arranged in the switch cavity 11 and connected to the vacuum arc-extinguishing chambers 2, the insulating cylinder 1 is provided with a conducting seat 13 outside the switch cavity 11, electrically conductive female arranging 103 is connected to electrically conductive seat 13, connecting lever 4 middle part articulates on electrically conductive seat 13, connecting lever 4 both ends respectively with move conducting rod 3 and insulating pull rod 5 and be connected, be provided with cam 91 on the operating axis 9, the outer end of insulating pull rod 5 articulates on the cam 91 top, the cam 91 and the insulating pull rod 5 that connect on the corresponding operating axis 9 on the mounting panel 101 form the groove 102 of stepping down that steps down for insulating pull rod 5, the direction of motion of insulating pull rod 5 is opposite with the direction of motion that moves conducting rod 3.
The movable conducting rod 3 is provided with a conducting sleeve 31, the conducting sleeve 31 is provided with a strip-shaped pressurizing hole 32, the movable conducting rod 3 is provided with a connecting pin 33 penetrating in the pressurizing hole 32, and a spring 34 is arranged between the conducting sleeve 31 and the movable conducting rod 3.
The lower extreme of vacuum interrupter 2 is provided with quiet end support 21, quiet end support 21 lower extreme is connected and is kept apart blade holder 6, movable contact sword 7 sets up to keeping apart blade holder 6 relatively, keep apart the one end of connecting triangle 71 on the connecting lever 8, the other both ends of triangle 71 all are connected with movable contact sword 7, be connected with insulating fixed axle 72 between the both sides board 10 of the below of movable contact sword 7, form three fixed slot 73 on the insulating fixed axle 72, three contact blade holder 74 has been inserted respectively in the three fixed slot 73, movable contact sword 7 articulates the top at contact blade holder 74, insulating fixed axle 72 forms hollow out construction 75, form the insulating piece 76 that the multi-disc expands outward between the three fixed slot 73. An isolation cutter shaft 81 is further arranged between the side plates 10, an isolation crank arm seat 82 is arranged on the isolation cutter shaft 81, and the isolation crank arm 8 is connected to the top end of the isolation crank arm seat 82.
The present invention is not limited to the specific embodiments described and illustrated in detail herein, and other modifications and variations may be effected by one skilled in the art without departing from the spirit and scope of the invention. All such variations and modifications are intended to be within the scope of the present invention. Moreover, all the components described herein may be replaced by other technically equivalent components.
Claims (10)
1. The utility model provides a vacuum circuit breaker for aerifing cubical switchboard, including an insulating cylinder, the vacuum interrupter, move the conducting rod, the connecting lever, insulating pull rod, the operating axis, keep apart the blade holder, the movable contact sword, keep apart the connecting lever, vacuum interrupter integrated into one piece is in an insulating cylinder, it connects in vacuum interrupter upper end to move the conducting rod, the connecting lever middle part articulates outside an insulating cylinder, the connecting lever both ends respectively with move the conducting rod and be connected with insulating pull rod, insulating pull rod outer end and operating axis are connected, keep apart the blade holder setting at the vacuum interrupter lower extreme, the blade holder setting is kept apart relatively to the movable contact sword, keep apart the connecting lever and connect on the movable contact sword, its characterized in that: the insulating cylinder forms a switch cavity at the upper end of the vacuum arc extinguish chamber, the movable conducting rod is arranged in the switch cavity and connected with the vacuum arc extinguish chamber, and the motion direction of the insulating pull rod is opposite to that of the movable conducting rod.
2. Vacuum circuit breaker for gas-filled switchgear cabinets according to claim 1, characterized in that: an insulating fixed shaft is arranged below the movable contact knife, a contact knife holder is arranged on the insulating fixed shaft, and the movable contact knife is hinged to the top end of the contact knife holder.
3. Vacuum circuit breaker for gas-filled switchgear cabinets according to claim 1 or 2, characterized in that: the insulating cylinder is provided with a conductive seat outside the switch cavity, the crank arm is connected to the conductive seat, and the conductive seat is connected with a conductive bus bar.
4. Vacuum circuit breaker for gas-filled switchgear cabinets according to claim 1 or 2, characterized in that: the movable conducting rod is provided with a conducting sleeve, a strip-shaped pressurizing hole is formed in the conducting sleeve, a connecting pin is formed in the movable conducting rod and penetrates through the pressurizing hole, and a spring is arranged between the conducting sleeve and the movable conducting rod.
5. Vacuum circuit breaker for gas-filled switchgear cabinets according to claim 1 or 2, characterized in that: the operating shaft is arranged on one side of the insulating cylinder, a cam is arranged on the operating shaft, and the outer end of the insulating pull rod is hinged to the top end of the cam.
6. Vacuum circuit breaker for gas-filled switchgear cabinets according to claim 1 or 2, characterized in that: vacuum circuit breaker still includes two curb plates, is connected with two mounting panels between two curb plates, the both sides of insulating cylinder form the installation department, and the installation department top of both sides is connected respectively on two mounting panels, and the operating axis sets up the outside at one of them mounting panel.
7. Vacuum circuit breaker for gas-filled switchgear cabinets according to claim 2, characterized in that: three fixed grooves are formed on the insulating fixed shaft, and the three contact knife holders are respectively inserted into the three fixed grooves.
8. Vacuum circuit breaker for gas-filled switchgear cabinets according to claim 7, characterized in that: the insulation fixing shaft is provided with a hollow structure, and a plurality of outward-expanded insulation sheets are formed between the three fixing grooves.
9. Vacuum circuit breaker for gas-filled switchgear cabinets according to claim 6, characterized in that: the movable contact knife is characterized in that an isolation knife shaft is arranged between the side plates, an isolation crank arm seat is arranged on the isolation knife shaft, the isolation crank arm is connected to the top end of the isolation crank arm seat, one end of a triangular plate is connected to the isolation crank arm, and the other two ends of the triangular plate are connected with the movable contact knife.
10. Vacuum circuit breaker for gas-filled switchgear cabinets according to claim 6, characterized in that: and the mounting plate is provided with an abdicating groove corresponding to the insulation pull rod connected to the operating shaft and forming an abdicating groove for the insulation pull rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111610216.6A CN114300299B (en) | 2021-12-27 | 2021-12-27 | Vacuum circuit breaker for gas-filled switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111610216.6A CN114300299B (en) | 2021-12-27 | 2021-12-27 | Vacuum circuit breaker for gas-filled switchgear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114300299A true CN114300299A (en) | 2022-04-08 |
| CN114300299B CN114300299B (en) | 2023-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111610216.6A Active CN114300299B (en) | 2021-12-27 | 2021-12-27 | Vacuum circuit breaker for gas-filled switchgear |
Country Status (1)
| Country | Link |
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| CN (1) | CN114300299B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0325754A2 (en) * | 1988-01-26 | 1989-08-02 | Licentia Patent-Verwaltungs-GmbH | Low-tension power circuit breaker with a sealed arc chamber |
| CN102332688A (en) * | 2010-07-14 | 2012-01-25 | 沈阳昊诚电气股份有限公司 | 24kV small-sized vacuum load switch (circuit breaker) cabinet |
| CN202268608U (en) * | 2011-09-21 | 2012-06-06 | 王丁丁 | Solid seal full-vacuum switching device |
| CN206060022U (en) * | 2016-09-29 | 2017-03-29 | 协成科技股份有限公司 | Vertical flush mounting type high voltage load switch fuse combined electric apparatus |
| CN206363945U (en) * | 2016-12-29 | 2017-07-28 | 东莞市信科电子技术有限公司 | A kind of sealing full-vacuum switching device |
| CN208970420U (en) * | 2018-10-15 | 2019-06-11 | 新机电器有限公司 | Novel switched pole |
| CN211208317U (en) * | 2019-11-04 | 2020-08-07 | 宇邦电气有限公司 | Isolated vacuum circuit breaker |
-
2021
- 2021-12-27 CN CN202111610216.6A patent/CN114300299B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0325754A2 (en) * | 1988-01-26 | 1989-08-02 | Licentia Patent-Verwaltungs-GmbH | Low-tension power circuit breaker with a sealed arc chamber |
| CN102332688A (en) * | 2010-07-14 | 2012-01-25 | 沈阳昊诚电气股份有限公司 | 24kV small-sized vacuum load switch (circuit breaker) cabinet |
| CN202268608U (en) * | 2011-09-21 | 2012-06-06 | 王丁丁 | Solid seal full-vacuum switching device |
| CN206060022U (en) * | 2016-09-29 | 2017-03-29 | 协成科技股份有限公司 | Vertical flush mounting type high voltage load switch fuse combined electric apparatus |
| CN206363945U (en) * | 2016-12-29 | 2017-07-28 | 东莞市信科电子技术有限公司 | A kind of sealing full-vacuum switching device |
| CN208970420U (en) * | 2018-10-15 | 2019-06-11 | 新机电器有限公司 | Novel switched pole |
| CN211208317U (en) * | 2019-11-04 | 2020-08-07 | 宇邦电气有限公司 | Isolated vacuum circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114300299B (en) | 2023-12-05 |
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