CN202839451U - Vacuum arc extinguish chamber - Google Patents
Vacuum arc extinguish chamber Download PDFInfo
- Publication number
- CN202839451U CN202839451U CN 201220505305 CN201220505305U CN202839451U CN 202839451 U CN202839451 U CN 202839451U CN 201220505305 CN201220505305 CN 201220505305 CN 201220505305 U CN201220505305 U CN 201220505305U CN 202839451 U CN202839451 U CN 202839451U
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- China
- Prior art keywords
- contact
- connector
- insulation crust
- fixed
- vacuum interrupter
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- 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 - Fee Related
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- 230000000712 assembly Effects 0.000 claims abstract description 5
- 238000000429 assembly Methods 0.000 claims abstract description 5
- 238000009413 insulation Methods 0.000 claims description 41
- 239000012212 insulator Substances 0.000 claims description 9
- 230000003068 static effect Effects 0.000 abstract description 2
- 239000004020 conductor Substances 0.000 description 3
- 238000010891 electric arc Methods 0.000 description 3
- 230000005283 ground state Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
A vacuum arc extinguish chamber comprises an insulating casing with a vacuum cavity, a first contact assembly and a second assembly. The first contact assembly includes a first contact positioned in the cavity of the insulating casing and a first conductive rod, one end of the first conductive rod is fixed to the first contact, and the other end of the first conductive rod is exposed and fixed in an end portion of the insulating casing. The second contact assembly includes a second contact positioned in the insulating casing and a second conductive rod, one end of the second conductive rod is fixed to the second contact, and the other end of the second conductive rod is exposed and fixed on a side wall of the insulating casing. A connecting rod moving along the insulating casing axially drives a connecting head in the insulating casing to be contacted with or separated from the first contact and the second contact simultaneously. The vacuum arc extinguish chamber further comprises a third contact assembly so as to realize the three-station operation. Compared with the prior art, the connecting head is separated from the first contact and the second contact simultaneously to form a double-fracture structure, the drop-out voltage is high, and the voltaic arc is small generated at the same voltage; and in addition, both the first contact and the second contact are static contacts, and the service life of the two contact assemblies is long.
Description
Technical field
The utility model relates to a kind of power switch, specifically refers to a kind of vacuum interrupter that is applied in the power switches such as vacuum circuit-breaker and vacuum load switch.
Background technology
Vacuum interrupter is the core component of middle high-pressure electric power switch, be widely used in the power transmission and distribution control system of electric power, its operation principle is, dependence is sealed in the on-off function that contact in the vacuum chamber is realized power circuit, and in case cut off circuit power, just promptly blow-out and suppress electric current of vacuum interrupter is avoided getting an electric shock or the generation of other contingencies.The contact of existing vacuum interrupter generally all includes moving contact and fixed contact, during work, moving contact contacts and is separated with fixed contact under the drive of conducting rod, and then realize closing a floodgate and the separating brake function, because in the course of the work, moving contact moves relative to fixed contact, thereby the mechanical endurance of moving contact is shorter, and then reduces the job stability of vacuum interrupter.In addition, owing to generally all form the single break structure between the moving contact of existing vacuum interrupter and the quiet place head, thereby cause the drop-out voltage electric arc relatively low and that under equal voltage, produce of vacuum interrupter larger, and then have influence on the performance of vacuum interrupter.In addition, although also have in the prior art a kind of vacuum interrupter of double-fracture structure, be ZL201020653072.3(Granted publication CN201886961U such as the patent No.) Chinese utility model patent disclosed a kind of " three-phase rotation double-break vacuum arc extinguishing chamber ", it includes a shaft insulation, one end of this shaft insulation links to each other with external power supply, the other end puts in the three-phase disc type rotation double-break vacuum arc extinguishing chamber and is connected with the insulating disc of outer rim with three conductor connecting rods, the two ends of each conductor connecting rod are provided with moving contact, fixed contact is fixed on the internal perisporium of arc control device, two moving contacts on conductor connecting rod end face and two fixed contacts on the internal perisporium that is fixed on arc control device form a double-fracture structure mutually, and three groups moving, fixed contact forms three-phase double-fracture structure.Although the vacuum interrupter of this double-fracture structure can be realized higher drop-out voltage, but, because its shaft insulation outwards passes in vacuum chamber, and driving moving contact by rotating insulated axle during work is rotated, thereby not only the vacuum degree of vacuum chamber is difficult to be guaranteed, and can shorten the mechanical endurance of moving contact and vacuum interrupter.
Summary of the invention
Technical problem to be solved in the utility model is for above-mentioned prior art present situation, provides that a kind of mechanical endurance is long, drop-out voltage is higher and produce the less vacuum interrupter of electric arc under equal voltage.
The utility model solves the problems of the technologies described above the technical scheme that adopts: this vacuum interrupter, comprise insulation crust and a plurality of contact assembly with vacuum lumen, it is characterized in that: described a plurality of contact assemblies are individually fixed in described insulation crust, a plurality of contact assemblies include the first contact assembly and the second contact assembly, wherein the first contact assembly is fixed by the first contact that is arranged in described insulation crust inner chamber and an end and the first contact, the first conducting rod that the other end exposes and be fixed in the insulation crust end consists of, the second contact assembly is fixed by the second contact that is arranged in described insulation crust and an end and the second contact, the second conducting rod that the other end exposes and be fixed in the insulation crust sidewall consists of, also being provided with in described insulation crust simultaneously can be simultaneously with first, the connector that the second contact contacts or separates, one can insulate with above-mentioned connector mutually along axially movable connecting rod one end of described insulation crust is connected, and the other end exposes to described insulation crust after passing a seal.
Three station schemes as vacuum interrupter, described contact assembly also includes the 3rd contact assembly, the 3rd contact assembly is by the 3rd contact that is arranged in described insulation crust and an end and the 3rd contact fixes, the other end exposes and the 3rd conducting rod that is fixed in the insulation crust sidewall consists of, under the state that described connector and described the first contact are separated, described the 3rd contact can be connected with described the second contact by described connector.Like this, after the 3rd contact assembly was set, vacuum interrupter can also be grounded function outside realizing combined floodgate and isolation features.
Described connector can adopt the various structures form, preferably, described connector is designed to I-shaped, the upper surface of this connector is between the first contact and the second contact, the lower surface of this connector is between the second contact and the 3rd contact, and pars intermedia is located in the through hole of the second contact.Connector is convenient to realize three station manipulations after adopting I-shape construction.
Further preferred, described connecting rod fixes by insulating bar and described connector, and described insulating bar shuttles back and forth in the perforation of the 3rd contact.Because insulating bar is not charged, thereby is located at it in vacuum chamber, not only can reduces the creepage distance of vacuum interrupter, but also be beneficial to the volume that reduces vacuum interrupter.
As the double scheme, described connector can adopt the various structures form, preferably, described connector is designed to I-shaped, the upper surface of this connector is between the first contact and the second contact, the lower surface of this connector is positioned at the below of the second contact, and pars intermedia is located in the through hole of the second contact.
Preferred as above-mentioned arbitrary scheme, upper end cover and bottom end cover that described insulation crust comprises housing and is positioned at the housing two ends, described seal is bellows, the described connecting rod other end exposes to described bottom end cover after passing described bellows, and the described first conducting rod other end exposes and is fixed on the described upper end cover.
Play preferably guide effect for connecting rod is moved axially, also be provided with the guide pin bushing that passes for described connecting rod on the described bottom end cover.
For the first conducting rod can be fixed on the upper end cover preferably, described upper end cover inner surface also is fixed with the auxiliary block of passing for described the first conducting rod.
For the second contact assembly is played preferably supporting role, described housing comprises insulator, lower insulator and is connected between the upper and lower insulator and supports the connecting ring of described the second contact assembly.
Compared with prior art, the utility model has the advantage of: at first, since in this vacuum interrupter the first conducting rod of the first contact assembly and and the second conducting rod of the second contact assembly be static conductive rod, the first contact and the second contact are fixed contact, thereby the mechanical endurance of this two contact assembly is longer; Secondly, because being positioned at the connector of insulation crust can contact with first, second contact or separate under the driving of connecting rod simultaneously, thereby vacuum interrupter can form the double-fracture structure, thereby has higher drop-out voltage, and the electric arc that produces under equal voltage is less.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment when "on" position;
Fig. 2 is the structural representation of the utility model embodiment when gate-dividing state;
Fig. 3 is the structural representation of the utility model embodiment when ground state;
Fig. 4 is the vertical view of arbitrary figure among Fig. 1 to Fig. 3.
Embodiment
Embodiment is described in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figures 1 to 4, the vacuum interrupter in the present embodiment comprises the insulation crust with vacuum lumen and the first contact assembly, the second contact assembly and the 3rd contact assembly that are fixed in insulation crust.Wherein, upper end cover 91 and bottom end cover 92 that insulation crust comprises housing and is positioned at the housing two ends, and housing specifically comprises insulator 93, lower insulator 94 and be connected to connecting ring 95 between the upper and lower insulator, and this connecting ring 95 is used for supporting the second above-mentioned contact assembly.The first contact assembly comprises the first contact 11 and the first conducting rod 12, this first contact 11 is positioned at insulation crust, one end of the first conducting rod 12 and this first contact 11 fix, the other end axially exposes and is fixed on the insulation crust upper end cover 91, and, in order to make the first conducting rod 12 can be fixed in preferably upper end cover 91, also be fixed with the auxiliary block 10 of passing for the first conducting rod 12 at upper end cover 91 inner surfaces.The second contact assembly comprises the second contact 21 and the second conducting rod 22, and this second contact 21 is positioned at insulation crust, and an end of the second conducting rod 22 and this second contact 21 fix, and other end side direction exposes and is fixed on the connecting ring 95 of insulation crust sidewall.The 3rd contact assembly comprises that the 3rd contact 31 and the 3rd conducting rod 32, the three contacts 31 are positioned at insulation crust, and an end of the 3rd conducting rod 32 fixes in the 3rd contact 31, and other end side direction exposes and is fixed on the bottom end cover 92 of insulation crust.In addition, although the first contact 11 in the present embodiment and the first conducting rod 12, the second contact 21 and the second conducting rod 22 and the 3rd contact 31 and the 3rd conducting rod 32 are integral piece.
In the present embodiment, in order to realize three station manipulations of vacuum interrupter, in insulation crust, be provided with the connector 4 that can be simultaneously contacts or separate with the first contact 11 and the second contact 21.Connector 4 in the present embodiment is I-shaped design, the upper surface of this connector 4 is between the first contact 11 and the second contact 21, the lower surface of this connector 4 is between the second contact 21 and the 3rd contact 31, and the pars intermedia of connector 4 is located in the through hole of the second contact 21.This connector 4 fixes by insulating bar 6 and connecting rod 5, wherein insulating bar 6 shuttles back and forth in the perforation of the 3rd contact 31, because insulating bar 6 is not charged, thereby after insulating bar 6 is set in insulation crust, be conducive to reduce the creepage distance of vacuum interrupter, also be conducive to dwindle simultaneously the volume of vacuum interrupter.The bottom end cover 92 that is exposed to insulation crust behind the bellows 7 is passed in the lower end of connecting rod 5, and, for moving axially of connecting rod 5 played preferably guide effect, also be provided with the guide pin bushing 8 that passes for connecting rod 5 on the bottom end cover 92.
The course of work of this vacuum interrupter is as follows: under "on" position, the first contact 11 is connected by connector 4 with the second contact 21, and at this moment, connector 4 and the 3rd contact 31 are separated; Turn to the process of gate-dividing state from "on" position, connecting rod 5 moves axially downwards, and and then drive connector 4 and move down, and under gate-dividing state, connector 4 is separated with the first contact 11, the second contact 21 and the 3rd contact 31 simultaneously; Turn to the process of ground state from gate-dividing state, connecting rod 5 further moves axially downwards, and further drives connector 4 and move down, and under ground state, the second contact 21 is connected by connector 4 with the 3rd contact 31, and at this moment, connector 4 and the first contact 11 are separated.
Although more than described preferred embodiment of the present utility model in detail, but should be expressly understood that, for a person skilled in the art, except the vacuum extinction of above-mentioned three stations outdoor, the utility model also can adopt the Vacuum Arc arc control device of two stations, and namely contact assembly is the first contact assembly and the second contact assembly.Namely all in vacuum interrupter by the mobile connecting rod of separately insulation realize three or two contacts deciliter; and any modification of within this spirit and principle, doing, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (9)
1. vacuum interrupter, comprise insulation crust and a plurality of contact assembly with vacuum lumen, it is characterized in that: described a plurality of contact assemblies are individually fixed in described insulation crust, a plurality of contact assemblies include the first contact assembly and the second contact assembly, wherein the first contact assembly is fixed by the first contact (11) that is arranged in described insulation crust inner chamber and an end and the first contact, the first conducting rod (12) that the other end exposes and be fixed in the insulation crust end consists of, the second contact assembly is fixed by the second contact (21) that is arranged in described insulation crust and an end and the second contact, the second conducting rod (22) that the other end exposes and be fixed in the insulation crust sidewall consists of, also being provided with in described insulation crust simultaneously can be simultaneously with first, the connector (4) that the second contact contacts or separates, one can insulate with above-mentioned connector (4) mutually along axially movable connecting rod (5) one ends of described insulation crust is connected, and the other end exposes to described insulation crust after passing a seal.
2. vacuum interrupter according to claim 1, it is characterized in that: described contact assembly also includes the 3rd contact assembly, the 3rd contact assembly is fixed by the 3rd contact (31) that is arranged in described insulation crust and an end and the 3rd contact, the 3rd conducting rod (32) that the other end exposes and be fixed in the insulation crust sidewall consists of, under the state that described connector (4) and described the first contact (11) are separated, described the 3rd contact (31) can be connected with described the second contact (21) by described connector (4).
3. vacuum interrupter according to claim 2, it is characterized in that: described connector (4) is designed to I-shaped, the upper surface of this connector (4) is positioned between the first contact (11) and the second contact (21), the lower surface of this connector (4) is positioned between the second contact (21) and the 3rd contact (31), and pars intermedia is located in the through hole of the second contact (21).
4. vacuum interrupter according to claim 2, it is characterized in that: described connecting rod (5) fixes by insulating bar (6) and described connector (4), and described insulating bar (6) shuttles back and forth in the perforation of the 3rd contact (31).
5. vacuum interrupter according to claim 1, it is characterized in that: described connector (4) is designed to I-shaped, the upper surface of this connector (4) is positioned between the first contact (11) and the second contact (21), the lower surface of this connector (4) is positioned at the below of the second contact (21), and pars intermedia is located in the through hole of the second contact (21).
6. according to claim 1 to the described vacuum interrupter of 5 arbitrary claims, it is characterized in that: described insulation crust comprises housing and is positioned at the upper end cover at housing two ends (91) and bottom end cover (92), described seal is bellows (7), described connecting rod (5) other end exposes to described bottom end cover (92) after passing described bellows, and described the first conducting rod (12) other end exposes and is fixed on the described upper end cover (91).
7. vacuum interrupter according to claim 6 is characterized in that: also be provided with the guide pin bushing (8) that passes for described connecting rod (5) on the described bottom end cover (92).
8. vacuum interrupter according to claim 6 is characterized in that: described upper end cover (91) inner surface also is fixed with the auxiliary block (10) of passing for described the first conducting rod (12).
9. vacuum interrupter according to claim 6 is characterized in that: described housing comprises insulator (93), lower insulator (94) and is connected between the upper and lower insulator and supports the connecting ring (95) of described the second contact assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220505305 CN202839451U (en) | 2012-09-27 | 2012-09-27 | Vacuum arc extinguish chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220505305 CN202839451U (en) | 2012-09-27 | 2012-09-27 | Vacuum arc extinguish chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202839451U true CN202839451U (en) | 2013-03-27 |
Family
ID=47951095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220505305 Expired - Fee Related CN202839451U (en) | 2012-09-27 | 2012-09-27 | Vacuum arc extinguish chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202839451U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103367025A (en) * | 2013-06-17 | 2013-10-23 | 北海银河产业投资股份有限公司 | Vacuum arc extinguishing chamber |
| CN104037012A (en) * | 2014-05-30 | 2014-09-10 | 国家电网公司 | Three-position vacuum arc-extinguishing chamber having insertion type grounding position |
| CN104517776A (en) * | 2013-09-27 | 2015-04-15 | 北京电研华源电力技术有限公司 | Three-station vacuum arc-extinguishing chamber of isolation switch |
| CN105304400A (en) * | 2015-11-02 | 2016-02-03 | 宁波耐吉新星自动化设备有限公司 | Novel vacuum arc-extinguishing chamber for solid insulated ring main unit |
| CN114267567A (en) * | 2022-01-24 | 2022-04-01 | 徐州贝尔电气有限公司 | Circuit breaker for electrical equipment safety |
-
2012
- 2012-09-27 CN CN 201220505305 patent/CN202839451U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103367025A (en) * | 2013-06-17 | 2013-10-23 | 北海银河产业投资股份有限公司 | Vacuum arc extinguishing chamber |
| CN104517776A (en) * | 2013-09-27 | 2015-04-15 | 北京电研华源电力技术有限公司 | Three-station vacuum arc-extinguishing chamber of isolation switch |
| CN104517776B (en) * | 2013-09-27 | 2017-10-03 | 北京电研华源电力技术有限公司 | A kind of station vacuum interrupter of disconnecting switch three |
| CN104037012A (en) * | 2014-05-30 | 2014-09-10 | 国家电网公司 | Three-position vacuum arc-extinguishing chamber having insertion type grounding position |
| CN104037012B (en) * | 2014-05-30 | 2016-02-24 | 国家电网公司 | A kind of three station vacuum arc extinguish chambers with plug-in type ground connection station |
| CN105304400A (en) * | 2015-11-02 | 2016-02-03 | 宁波耐吉新星自动化设备有限公司 | Novel vacuum arc-extinguishing chamber for solid insulated ring main unit |
| CN105304400B (en) * | 2015-11-02 | 2018-10-02 | 宁波耐吉新星自动化设备有限公司 | Vacuum interrupter for solid insulation ring main unit |
| CN114267567A (en) * | 2022-01-24 | 2022-04-01 | 徐州贝尔电气有限公司 | Circuit breaker for electrical equipment safety |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20160927 |