CN203055773U - Three-position vacuum interrupter - Google Patents
Three-position vacuum interrupter Download PDFInfo
- Publication number
- CN203055773U CN203055773U CN 201220669107 CN201220669107U CN203055773U CN 203055773 U CN203055773 U CN 203055773U CN 201220669107 CN201220669107 CN 201220669107 CN 201220669107 U CN201220669107 U CN 201220669107U CN 203055773 U CN203055773 U CN 203055773U
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- contact
- fixed
- insulator
- insulation crust
- end cover
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Abstract
The utility model discloses a three-position vacuum interrupter. The three-position vacuum interrupter comprises an insulation housing with a vacuum inner chamber, and three contact assemblies. Conductive poles of the three contact assemblies are all fixed on the insulation housing, correspondingly, three contacts are all static contacts, and the first contact, the second contact and the third contact are sequentially arranged in the vacuum inner chamber along the axial direction at intervals. A connector which is shaped like a Chinese character "wang" is arranged inside the vacuum inner chamber, and while moving along the axial direction, the connector can contact with the first contact and the second contact simultaneously, or contact with the second contact and the third contact simultaneously, or be separated from the first contact, the second contact and the third contact simultaneously. A connection rod axially driving the connector to perform axial movement is arranged inside the vacuum inner chamber. The three-position vacuum interrupter is advantageous in that, firstly, the mechanical life of the three contact assemblies is long; secondary, with the connector which is shaped like a Chinese character "wang", the entire structure layout of the vacuum interrupter is reasonable, so that the three-position operation can be conveniently realized, the volume reduction of the vacuum interrupter is facilitated, and the entire structure strength of the vacuum interrupter is improved.
Description
Technical field
The utility model relates to a kind of power switch, specifically refers to a kind of three station vacuum interrupters that are applied in the power switches such as vacuum circuit-breaker and vacuum load switch.
Background technology
Vacuum interrupter is the core component of middle and high piezoelectric forces 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 blow-out promptly 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 bigger, and then have influence on the performance of vacuum interrupter.
In addition, for three station vacuum interrupters, in the vacuum chamber of insulation crust, generally all be provided with a connector, the rotation by connector or move axially to realize three station manipulations.But, in vacuum chamber manufacturing process, find, after vacuum chamber adopts present rotation or axially movable connector, fit structure between the contact of its connector and conducting rod is reasonable inadequately, layout is compact inadequately, be unfavorable for the miniaturization design of vacuum interrupter, and its structural strength is still waiting further raising.
The utility model content
Technical problem to be solved in the utility model is at above-mentioned prior art present situation, provides a kind of integral structure layout comparatively rationally and three higher station vacuum interrupters of structural strength.
The utility model solves the problems of the technologies described above the technical scheme that adopts: the vacuum interrupter of this three station, comprise the insulation crust with vacuum lumen, first contact assembly, second contact assembly and the 3rd contact assembly, it is characterized in that: described first contact assembly fixes by first contact that is arranged in vacuum lumen with first contact and exposes first electric conductor that is fixed on the insulation crust and constitutes, described second contact assembly fixes by second contact that is arranged in vacuum lumen with second contact and exposes second conducting rod that is fixed on the insulation crust sidewall and constitutes, described the 3rd contact assembly fixes by the 3rd contact that is arranged in vacuum lumen with the 3rd contact and exposes the 3rd conducting rod that is fixed on the insulation crust sidewall and constitutes, described first contact, second contact and the 3rd contact in vacuo axially arrange in the chamber successively at interval, in vacuo also being provided with in the chamber can be simultaneously with first when moving axially, second contact contacts, perhaps simultaneously with second, the 3rd contact contacts, perhaps simultaneously with first, second, king's font connector that the 3rd contact is separated, 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.
In order to prevent that the metallic dust that arcing produces is splashed to housing insulator inner surface, in described insulation crust, be provided with one and can be all the time first contact, second contact and king's font connector and the contacted position of first, second contact be covered with arc-extinguish chamber in it.Like this, arc-extinguish chamber can effectively stop metallic dust to pollute the insulator inner surface, thereby makes insulator have good insulation all the time, and in addition, arc-extinguish chamber can also effectively be protected insulator, avoids insulator to produce superheating phenomenon, thereby prolongs the useful life of insulator.
Preferably, the end face of the last brace of described king's font connector has the 4th contact that can touch mutually with described first contact, the bottom surface of last brace has the 5th contact that can touch mutually with described second contact, the end face of the middle brace of described king's font connector has the 6th contact that can touch mutually with described second contact, and the bottom surface of the following brace of described king's font connector has the 7th contact that can touch mutually with described the 3rd contact.Like this, when connector moves axially, by the touching between each corresponding contact, can realize three station manipulations preferably.
First electric conductor can adopt multiple version, as a kind of preferred version, described first electric conductor is shaft-like, and an end of this shaft-like first electric conductor stretches in the insulation crust and fixes with described first contact, and the other end axially exposes and be fixed in the end of described insulation crust.Shaft-like conductor construction is comparatively simple, and it is comparatively convenient to make.
With shaft-like electric conductor accordingly, described insulation crust comprises insulator, following insulator, upper end cover and bottom end cover, described upper end cover is fixed on the upper end of insulator, the lower end of described upward insulator and the upper end of following insulator are fixed on the both sides up and down of described second conducting rod respectively by first connecting ring and second connecting ring, the described lower end of insulator down is fixed on the upside of described the 3rd conducting rod by the 3rd connecting ring, described bottom end cover is fixed on the downside of the 3rd conducting rod, the other end of described shaft-like first electric conductor axially exposes and is fixed on the upper end cover, and the other end of described connecting rod passes and exposes behind the seal and be fixed on the bottom end cover.
In order to make the first conduction physical efficiency be fixed on the upper end cover preferably, upper surface at described upper end cover fixedly has the auxiliary block of passing for first electric conductor, play guide effect preferably for connecting rod is moved axially, be provided with the guide pin bushing that passes for described connecting rod at described bottom end cover.
As another preferred version of first conductor construction, described first electric conductor is the T font, and the bottom of this T font electric conductor is stretched in the insulation crust and fixed with described first contact, and the top is exposed and is fixed on the sidewall of insulation crust.The top of T font electric conductor can be used as the leading-out terminal of electric conductor and the cover plate of vacuum interrupter simultaneously, thereby simplifies the structure of vacuum interrupter.
With T font electric conductor accordingly, described insulation crust comprises insulator, following insulator, bottom end cover, the lower end of described upward insulator and the upper end of following insulator are fixed on the both sides up and down of described second conducting rod respectively by first connecting ring and second connecting ring, the described lower end of insulator down is fixed on the upside of described the 3rd conducting rod by the 3rd connecting ring, described bottom end cover is fixedly connected on the downside of the 3rd conducting rod, the top of described T font first electric conductor is fixed on the top of insulator by the 4th connecting ring, and outer being exposed at was fixed on the described bottom end cover after the other end of described connecting rod passed seal.
Play guide effect preferably for connecting rod is moved axially, be provided with the guide pin bushing that passes for described connecting rod at described bottom end cover.
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.
Compared with prior art, advantage of the present utility model is: at first, because first electric conductor, second conducting rod and the 3rd conducting rod in three groups of contact assemblies in this vacuum interrupter all are fixed on the insulation crust, first, second, third contact is fixed contact, thereby the mechanical endurance of each contact assembly is longer; Secondly, behind the connector of employing king font, make that not only the integral structure layout of vacuum interrupter is comparatively reasonable, be easy to realize three station manipulations, and be beneficial to the volume that reduces vacuum interrupter, but also can improve the overall construction intensity of vacuum interrupter.
Description of drawings
Fig. 1 is the front view of the utility model embodiment one;
Fig. 2 is the structural representation of the utility model embodiment one when ground state;
Fig. 3 is the structural representation of the utility model embodiment one when gate-dividing state;
Fig. 4 is the structural representation of the utility model embodiment one when "on" position;
Fig. 5 is the front view of the utility model embodiment two;
Fig. 6 is the structural representation of the utility model embodiment two when ground state;
Fig. 7 is the structural representation of the utility model embodiment two when gate-dividing state;
Fig. 8 is the structural representation of the utility model embodiment two when "on" position.
Embodiment
Describe in further detail below in conjunction with the utility model of accompanying drawing embodiment.
Embodiment one:
As shown in Figures 1 to 4, three station vacuum interrupters in the present embodiment have the insulation crust and first contact assembly, second contact assembly and the 3rd contact assembly that are fixed on the insulation crust of vacuum lumen.Wherein, first contact assembly is by first contact 11 that is arranged in vacuum lumen and lower end and first contact fixes, expose the upper end and first electric conductor 12 that is fixed on the insulation crust end constitutes; Second conducting rod 22 that second contact assembly fixes by second contact 21 that is arranged in vacuum lumen with second contact and side direction exposes and be fixed on the insulation crust sidewall constitutes, and, be equipped with second contact 21 in the both sides up and down of second conducting rod 22; The 3rd conducting rod 32 that the 3rd contact assembly fixes by the 3rd contact 31 that is arranged in vacuum lumen with the 3rd contact and side direction exposes and be fixed on the insulation crust sidewall constitutes.And above-mentioned first contact 11, second contact 21 and the 3rd contact 31 in vacuo axially arrange in the chamber from top to bottom successively at interval.In the present embodiment, insulation crust comprises insulator 83, following insulator 84, upper end cover 81 and bottom end cover 82, upper end cover 81 is fixed on the upper end of insulator 83, the lower end of last insulator 83 is fixed on the upside of second conducting rod 22 by first connecting ring 85, the upper end of following insulator 84 is fixed on the downside of second conducting rod 22 by second connecting ring 86, the lower end of following insulator 84 is fixed on the upside of the 3rd conducting rod 32 by the 3rd connecting ring 87, and bottom end cover 82 is fixed on the downside of the 3rd conducting rod 32.First electric conductor 12 is shaft-like, and its top axial exposes and is fixed on the upper end cover 81, in the present embodiment, for first electric conductor 12 can be fixed on the upper end cover 81 preferably, the auxiliary block 91 of passing for first electric conductor 12 is arranged fixedly at the upper surface of upper end cover 81.
Also be provided with the king's font connector 4 that from the through hole of second conducting rod 22, wears and cross in vacuo in the chamber, the end face of the last brace 41 of connector 4 has the 4th contact 411 that can touch mutually with first contact 11, the bottom surface of last brace 41 has the 5th contact 412 that can touch mutually with second contact 21, the end face of the middle brace 42 of connector 4 has the 6th contact 421 that can touch mutually with second contact 21, and the bottom surface of the following brace 43 of connector 4 has the 7th contact 431 that can touch mutually with the 3rd contact 31.
Connecting rod 5 can move axially along insulation crust, the upper end of connecting rod 5 fixes by the bottom of insulating bar 6 with connector 4,6 of insulating bars shuttle back and forth in the perforation of the 3rd contact 31, insulating bar 6 is located in the vacuum chamber, not only can reduce the creepage distance of vacuum interrupter, but also be beneficial to the volume that reduces vacuum interrupter.The lower end of connecting rod 5 is passed and is exposed behind the bellows 10 that seal is present embodiment and be fixed on the bottom end cover 82, and plays guide effect preferably for connecting rod 5 is moved axially, and is provided with the guide pin bushing 92 that passes for connecting rod 5 at bottom end cover 82.
Can produce arcing in the vacuum interrupter course of work, in order to prevent that the metallic dust that arcing produces is splashed to housing insulator inner surface, in insulation crust, be provided with one and can be all the time first contact 11, second contact 21 and king's font connector 4 and the one the second contacted positions of contact be covered with arc-extinguish chamber 7 in it.Arc-extinguish chamber 7 can effectively stop metallic dust to pollute the insulator inner surface, thereby makes insulator have good insulation all the time, simultaneously; after arc-extinguish chamber 7 is set; the superheating phenomenon that also can avoid insulator to produce owing to the influence of arcing, thus insulator effectively protected, prolong its useful life.In addition, arc-extinguish chamber 7 is set in the vacuum lumen of vacuum interrupter, also is beneficial to vacuum interrupter and uses in big electric current, high-tension occasion.
The course of work of this vacuum interrupter is as follows, first electric conductor 12 is as the end of incoming cables, second conducting rod 22 is as leading-out terminal, the 3rd conducting rod 32 is as earth terminal, under ground state shown in Figure 2, the 5th contact 412 of the last brace 41 of king's font connector 4 is touched mutually with second contact 21 of second conducting rod, 22 upsides, the 7th contact 431 of the following brace 43 of connector 4 is touched mutually with the 3rd contact 31, at this moment, second conducting rod 22 and the 3rd conducting rod 32 are conducted, and first electric conductor 12 is held mutually with second conducting rod 22 and opened; Turn to the process of gate-dividing state from ground state, connecting rod 5 upwards moves axially, and and then drive connector 4 and move up, up under gate-dividing state as shown in Figure 3, each contact on the connector 4 is separated with first contact 11, second contact 21 and the 3rd contact 31 simultaneously, first electric conductor 12 disconnects mutually with second conducting rod 22, and second conducting rod 22 disconnects mutually with the 3rd conducting rod 32; Turn to the process of "on" position from gate-dividing state, connecting rod 5 further upwards moves axially, and further drive connector 4 and move up, up under "on" position as shown in Figure 4, the 4th contact 411 of the last brace 41 of connector 4 is touched mutually with first contact 11, the 6th contact 421 of the middle brace 42 of connector 4 is touched mutually with second contact 21 of second conducting rod, 22 downsides, at this moment, first electric conductor 12 and second conducting rod 22 are conducted, and second conducting rod 22 continues to disconnect mutually with the 3rd conducting rod 32.
Embodiment two:
As Fig. 5 to shown in Figure 8, present embodiment and the difference of embodiment one be first electric conductor structure and and insulation crust between syndeton different.
In the present embodiment, first electric conductor 12 is the T font, and the bottom of this T font electric conductor is stretched in the vacuum lumen and fixed with first contact 11, and the top exposes to insulator 83 by top and the side direction that the 4th connecting ring 88 is fixed on insulator 83.At this moment, the top of T font electric conductor can be used as the leading-out terminal of electric conductor and the upper cover plate of vacuum interrupter simultaneously, thereby the structure of vacuum interrupter is simplified.
Claims (10)
1. station vacuum interrupter, comprise the insulation crust with vacuum lumen, first contact assembly, second contact assembly and the 3rd contact assembly, it is characterized in that: described first contact assembly fixes by first contact (11) that is arranged in vacuum lumen with first contact and exposes first electric conductor (12) that is fixed on the insulation crust and constitutes, described second contact assembly fixes by second contact (21) that is arranged in vacuum lumen with second contact and exposes second conducting rod (22) that is fixed on the insulation crust sidewall and constitutes, described the 3rd contact assembly fixes by the 3rd contact (31) that is arranged in vacuum lumen with the 3rd contact and exposes the 3rd conducting rod (32) that is fixed on the insulation crust sidewall and constitutes, described first contact (11), second contact (21) and the 3rd contact (31) in vacuo axially arrange in the chamber successively at interval, in vacuo also being provided with in the chamber can be simultaneously with first when moving axially, second contact contacts, perhaps simultaneously with second, the 3rd contact contacts, perhaps simultaneously with first, second, king's font connector (4) that the 3rd contact is separated, 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. three station vacuum interrupters according to claim 1 is characterized in that: be provided with an arc-extinguish chamber (7) that can all the time first contact (11), second contact (21) and king's font connector (4) and the contacted position of first, second contact be covered with in it in described insulation crust.
3. three station vacuum interrupters according to claim 1, it is characterized in that: the end face of the last brace (41) of described king's font connector (4) has the 4th contact (411) that can touch mutually with described first contact (11), the bottom surface of last brace (41) has the 5th contact (412) that can touch mutually with described second contact (21), the end face of the middle brace (42) of described king's font connector (4) has the 6th contact (421) that can touch mutually with described second contact (21), and the bottom surface of the following brace (43) of described king's font connector (4) has the 7th contact (431) that can touch mutually with described the 3rd contact (31).
4. according to claim 1 or 2 or 3 described three station vacuum interrupters, it is characterized in that: described first electric conductor (12) is shaft-like, one end of this shaft-like first electric conductor (12) stretches in the insulation crust and fixes with described first contact (11), and the other end axially exposes and be fixed in the end of described insulation crust.
5. three station vacuum interrupters according to claim 4, it is characterized in that: described insulation crust comprises insulator (83), following insulator (84), upper end cover (81) and bottom end cover (82), described upper end cover (81) is fixed on the upper end of insulator (83), the lower end of described upward insulator (83) and the upper end of following insulator (84) are fixed on the both sides up and down of described second conducting rod (22) respectively by first connecting ring (85) and second connecting ring (86), the described lower end of insulator (84) down is fixed on the upside of described the 3rd conducting rod (32) by the 3rd connecting ring (87), described bottom end cover (82) is fixed on the downside of the 3rd conducting rod (32), the other end of described shaft-like first electric conductor (12) axially exposes and is fixed on the upper end cover (81), and the other end of described connecting rod (5) passes and exposes behind the seal and be fixed on the bottom end cover (82).
6. three station vacuum interrupters according to claim 5, it is characterized in that: the upper surface at described upper end cover (81) fixedly has the auxiliary block (91) of passing for first electric conductor (12), is provided with the guide pin bushing (92) that passes for described connecting rod (5) at described bottom end cover (82).
7. according to claim 1 or 2 or 3 described three station vacuum interrupters, it is characterized in that: described first electric conductor (12) is the T font, the bottom of this T font electric conductor is stretched in the insulation crust and is fixed with described first contact (11), and the top is exposed and is fixed on the sidewall of insulation crust.
8. three station vacuum interrupters according to claim 7, it is characterized in that: described insulation crust comprises insulator (83), following insulator (84), bottom end cover (82), the lower end of described upward insulator (83) and the upper end of following insulator (84) are fixed on the both sides up and down of described second conducting rod (22) respectively by first connecting ring (85) and second connecting ring (86), the described lower end of insulator (84) down is fixed on the upside of described the 3rd conducting rod (32) by the 3rd connecting ring (87), described bottom end cover (82) is fixedly connected on the downside of the 3rd conducting rod (32), the top of described T font first electric conductor is fixed on the top of insulator (83) by the 4th connecting ring (88), and outer being exposed at was fixed on the described bottom end cover (82) after the other end of described connecting rod (5) passed seal.
9. three station vacuum interrupters according to claim 8 is characterized in that: be provided with the guide pin bushing (92) that passes for described connecting rod (5) at described bottom end cover (82).
10. according to claim 1 or 2 or 3 described three station vacuum interrupters, 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).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220669107 CN203055773U (en) | 2012-12-04 | 2012-12-04 | Three-position vacuum interrupter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220669107 CN203055773U (en) | 2012-12-04 | 2012-12-04 | Three-position vacuum interrupter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203055773U true CN203055773U (en) | 2013-07-10 |
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ID=48738700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220669107 Expired - Fee Related CN203055773U (en) | 2012-12-04 | 2012-12-04 | Three-position vacuum interrupter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203055773U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2012
- 2012-12-04 CN CN 201220669107 patent/CN203055773U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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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: 20130710 Termination date: 20171204 |