CN205645670U - Outdoor vacuum interrupter for load switch - Google Patents
Outdoor vacuum interrupter for load switch Download PDFInfo
- Publication number
- CN205645670U CN205645670U CN201620388742.0U CN201620388742U CN205645670U CN 205645670 U CN205645670 U CN 205645670U CN 201620388742 U CN201620388742 U CN 201620388742U CN 205645670 U CN205645670 U CN 205645670U
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- CN
- China
- Prior art keywords
- contact
- conductive rod
- corrugated tube
- vacuum interrupter
- load switch
- Prior art date
- 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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Abstract
The utility model provides an outdoor vacuum interrupter for load switch, a serial communication port, including airtight insulation system, electrically conductive system, shielding system, contact system, bellows, there is contact system airtight insulation system inside, and contact system fixes in electrically conductive system, all is provided with shielding system around contact and bellows. The utility model discloses an outdoor vacuum interrupter for load switch has energy -conservation, material -saving, fire prevention, explosion -proof, small, longe -lived, characteristics such as maintenance cost low, the operation is reliable and pollution -free.
Description
Technical field
This utility model relates to a kind of outdoor load switch technical field, particularly to a kind of outdoor load switch vacuum interrupter.
Background technology
Vacuum interrupter, is the core component of mesohigh power switch.Its Main Function is, by can blow-out suppress electric current rapidly after in pipe, the excellent insulating properties of vacuum makes mesohigh circuitry cuts power supply, avoid accident and unexpected generation, it is mainly used in the power transmission and distribution control system of electric power, is also applied to the distribution systems such as metallurgy, mine, oil, chemical industry, railway, broadcast, communication, industry high-frequency heating.
Utility model content
This utility model patent provides a kind of outdoor load switch vacuum interrupter and has the features such as energy-conservation, material-saving, fire prevention, explosion-proof, volume is little, life-span length, maintenance cost are low, reliable and pollution-free.
For realizing above-mentioned functions, above-mentioned technical problem of the present utility model is mainly addressed by following technical proposals:
The utility model discloses a kind of outdoor load switch vacuum interrupter, including airtight insulation system, conducting system, shielding harness, contact system, corrugated tube, contact system is had inside described hermetic seal insulation system, contact system is fixed on conducting system, is both provided with shielding harness around contact and corrugated tube.Shielding harness, to stop the effect of electric arc product surrounding splash, contributes to the decay of residual plasma body after arc extinction, prevents insulation crust contaminated.Thus the raising of dielectric strength resume speed and connecting-disconnecting function after the arc of vacuum interrupter is played great role by shielding harness.
Further, airtight insulation crust that described hermetic seal insulation system is made up of glass or pottery, moved end cover plate, fixed end cover plate, corrugated tube forms, described conducting system includes moving conductive rod and static conductive rod, described shielding harness is bellows shield cover and shielding cylinder, and described contact system is moving contact and static contact；
Further, described airtight insulation crust and the moved end cover plate of its upper end, corrugated tube are hermetic container with the quiet end casing sealing-in of lower end, there are moving contact and static contact therein, the moving contact being positioned at airtight insulation crust top is fixed on moving conductive rod, the static contact of airtight insulation crust bottom is fixed on static conductive rod, is provided with shielding cylinder outside contact system, and corrugated tube is positioned on moving conductive rod, bellows shield cover, moving conductive rod is had to have fairlead outside one end outside corrugated tube.Fairlead is that the motion to moving conductive rod play the guiding role, as far as possible the axiality of vacuum interrupter sound end during safety action, thus ensures the contact area of dynamic/static contact.Design, in case spraining corrugated tube during assembling it addition, fairlead can also do anti-torsion with moving conductive rod.
Further, described airtight insulation crust glass or pottery are made, in order to ensure to have between glass, pottery and metal good air-tightness, to have in addition to strict operating procedure when sealing-in, the breathability of glass or ceramic material itself little and internal discharge quantity of trying one's best is restricted to minimum.Al typically selected by ceramic material2O3Ceramic cartridge.Al2O3Ceramic material has under excellent electrical insulation capability, higher mechanical strength, high temperature and is not easily decomposed and the series of advantages such as evaporation, i.e. can guarantee that vacuum interrupter is producing and air-tightness in running is hardly damaged again.
Described corrugated tube is that rustless steel is made.The vacuum state of vacuum extinction chamber interior can not only be kept apart by the effect of stainless steel corrugated tube with outside atmospheric condition, and moving contact can be made to move within the limits prescribed together with moving conductive rod, to complete Guan Bi and the breaking operation of vacuum switch.
The moving conductive rod of vacuum interrupter, together with sylphon seal, is a movable member, by being connected with operating mechanism, operating mechanism drive under, can along arc-chutes axially-movable thus drive arc-chutes moving contact to complete splitting or integrating action.
When moving conductive rod closes a floodgate under operating mechanism drives, dynamic/static contact closes, and power supply is connected with load.When moving conductive rod charged separating brake under operating mechanism drives, between contact, produce vacuum arc.
When the contact of vacuum interrupter carries electrically separated in a vacuum, electrical contact surface is long-pending to be reduced rapidly, when dynamic, determine contact in the moment separated, certain point that current constriction has just separated to contact or certain some on, resistance between electrode acutely increases, temperature improves the most rapidly, last metal bridge melts and evaporates substantial amounts of metallic vapour, concurrently form high electric field intensity, cause puncturing of violent field emission and gap, create vacuum arc, vacuum arc does not maintains by gas molecule ionization between electrode, and be dependent on the contact material out metallic vapour that formed of evaporation and maintain.
When operating current is close to zero, the increase of contact pitch simultaneously, the plasma of vacuum arc quickly spreads to surrounding, and after arc current zero passage, the medium of contact gap is become insulator from electric conductor rapidly, and then electric current is broken, cut-offs end.
The metallic vapour produced during arcing is absorbed by radome surface condensation, the metallic vapour that the part in a small amount of gas of release is condensed, and a part is absorbed by the getter in arc-chutes, is that vacuum interrupter maintains higher vacuum always.
Reasonably structure of contact terminal, can make electric arc be evenly distributed on contact surface, thus reduce the galvano-cautery speed of arc energy and contact, and makes vacuum interrupter have the resume speed of dielectric strength after higher arc.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is outdoor load switch vacuum interrupter perspective cross section structural representation described in the utility model.
In the drawings: 1, moving conductive rod；2, fairlead；3, corrugated tube；4, moved end cover plate；5, bellows shield cover；6, airtight insulation crust；7, shielding cylinder；8, contact system；9, static conductive rod；10, quiet end casing.
Detailed description of the invention
Below in conjunction with the accompanying drawings preferred embodiment of the present utility model is described in detail, so that advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus protection domain of the present utility model is made apparent clear and definite defining.
As shown in Figure 1, the utility model discloses a kind of outdoor load switch vacuum interrupter, it is characterized in that, including airtight insulation system, conducting system, shielding harness, contact system, corrugated tube, there are contact system, contact system to be fixed on conducting system inside described hermetic seal insulation system, around contact and corrugated tube, are both provided with shielding harness.Shielding harness, to stop the effect of electric arc product surrounding splash, contributes to the decay of residual plasma body after arc extinction, prevents insulation crust contaminated.Thus the raising of dielectric strength resume speed and connecting-disconnecting function after the arc of vacuum interrupter is played great role by shielding harness.
Airtight insulation crust 6 that described hermetic seal insulation system is made up of glass or pottery, moved end cover plate 4, fixed end cover plate 11, corrugated tube 3 forms, described conducting system includes moving conductive rod 1 and static conductive rod 10, described shielding harness is bellows shield cover 5 and shielding cylinder 7, and described contact system is moving contact 8 and static contact 9；
Described airtight insulation crust 6 and the moved end cover plate 4 of its upper end, corrugated tube 3 are hermetic container with quiet end casing 11 sealing-in of lower end, there are moving contact 8 and static contact 9 therein, the moving contact 8 being positioned at airtight insulation crust 6 top is fixed on moving conductive rod 1, the static contact 9 of airtight insulation crust 6 bottom is fixed on static conductive rod 10, shielding cylinder 7 it is provided with outside contact system, corrugated tube 3 is positioned on moving conductive rod 1, corrugated tube 3 is outside has bellows shield cover 5, moving conductive rod 1 to have fairlead 2 outside one end.Fairlead 2 is that the motion to moving conductive rod 1 play the guiding role, as far as possible the axiality of vacuum interrupter sound end during safety action, thus ensures the contact area of dynamic/static contact.Design, in case spraining corrugated tube 3 during assembling it addition, fairlead 2 can also do anti-torsion with moving conductive rod 1.
Described airtight insulation crust 6 glass or pottery are made, in order to ensure to have between glass, pottery and metal good air-tightness, to have when sealing-in in addition to strict operating procedure, the breathability of glass or ceramic material itself little and internal discharge quantity of trying one's best is restricted to minimum.Al typically selected by ceramic material2O3Ceramic cartridge.Al2O3Ceramic material has under excellent electrical insulation capability, higher mechanical strength, high temperature and is not easily decomposed and the series of advantages such as evaporation, i.e. can guarantee that vacuum interrupter is producing and air-tightness in running is hardly damaged again.
Described corrugated tube 3 is made for rustless steel.The vacuum state of vacuum extinction chamber interior can not only be kept apart by the effect of stainless steel corrugated tube 3 with outside atmospheric condition, and moving contact can be made to move within the limits prescribed together with moving conductive rod, to complete Guan Bi and the breaking operation of vacuum switch.
Together with the moving conductive rod 1 of vacuum interrupter seals with corrugated tube 3, be a movable member, by being connected with operating mechanism, operating mechanism drive under, can along arc-chutes axially-movable thus drive arc-chutes moving contact to complete splitting or integrating action.
When moving conductive rod 1 closes a floodgate under operating mechanism drives, dynamic/static contact closes, and power supply is connected with load.When moving conductive rod 1 charged separating brake under operating mechanism drives, between contact, produce vacuum arc.
When the contact of vacuum interrupter carries electrically separated in a vacuum, electrical contact surface is long-pending to be reduced rapidly, when dynamic, determine contact in the moment separated, certain point that current constriction has just separated to contact or certain some on, resistance between electrode acutely increases, temperature improves the most rapidly, last metal bridge melts and evaporates substantial amounts of metallic vapour, concurrently form high electric field intensity, cause puncturing of violent field emission and gap, create vacuum arc, vacuum arc does not maintains by gas molecule ionization between electrode, and be dependent on the contact material out metallic vapour that formed of evaporation and maintain.
When operating current is close to zero, the increase of contact pitch simultaneously, the plasma of vacuum arc quickly spreads to surrounding, and after arc current zero passage, the medium of contact gap is become insulator from electric conductor rapidly, and then electric current is broken, cut-offs end.
The metallic vapour produced during arcing is absorbed by radome surface condensation, the metallic vapour that the part in a small amount of gas of release is condensed, and a part is absorbed by the getter in arc-chutes, is that vacuum interrupter maintains higher vacuum always.
Reasonably structure of contact terminal, can make electric arc be evenly distributed on contact surface, thus reduce the galvano-cautery speed of arc energy and contact, and makes vacuum interrupter have the resume speed of dielectric strength after higher arc.
The above, detailed description of the invention the most of the present utility model, but protection domain of the present utility model is not limited thereto, any change expected without creative work or replacement, all should contain within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claims are limited.
Claims (4)
1. an outdoor load switch vacuum interrupter, it is characterized in that, including airtight insulation system, conducting system, shielding harness, contact system, corrugated tube, contact system is had inside described hermetic seal insulation system, contact system is fixed on conducting system, is both provided with shielding harness around contact system and corrugated tube.
A kind of outdoor load switch vacuum interrupter the most according to claim 1, it is characterized in that, described hermetic seal insulation system is by airtight insulation crust (6), moved end cover plate (4), fixed end cover plate (11), corrugated tube (3) forms, described conducting system includes moving conductive rod (1) and static conductive rod (10), described shielding harness is bellows shield cover (5) and shielding cylinder (7), and described contact system is moving contact (8) and static contact (9)；
The moved end cover plate (4) of described airtight insulation crust (6) and its upper end, corrugated tube (3) is airtight vacuum chamber with quiet end casing (11) sealing-in of lower end, there are moving contact (8) and static contact (9) therein, the moving contact (8) being positioned at airtight insulation crust (6) top is fixedly connected on moving conductive rod (1) one end, the static contact (9) of airtight insulation crust (6) bottom is fixed on static conductive rod (10) one end, shielding cylinder (7) it is provided with outside contact system, corrugated tube (3) is positioned on moving conductive rod (1), corrugated tube (3) is outside bellows shield cover (5), fairlead (2) is had outside moving conductive rod (1) one end.
A kind of outdoor load switch vacuum interrupter the most according to claim 2, it is characterised in that described airtight insulation crust (6) is glass or pottery is made, and described corrugated tube (3) is that rustless steel is made.
A kind of outdoor load switch vacuum interrupter the most according to claim 2, it is characterised in that be connected with mechanism outside described moving conductive rod (1) and static conductive rod (10) other end protruded tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620388742.0U CN205645670U (en) | 2016-05-03 | 2016-05-03 | Outdoor vacuum interrupter for load switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620388742.0U CN205645670U (en) | 2016-05-03 | 2016-05-03 | Outdoor vacuum interrupter for load switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205645670U true CN205645670U (en) | 2016-10-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620388742.0U Expired - Fee Related CN205645670U (en) | 2016-05-03 | 2016-05-03 | Outdoor vacuum interrupter for load switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205645670U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107644779A (en) * | 2017-09-28 | 2018-01-30 | 湖州电力设备成套有限公司 | A kind of vacuum bubbles and vacuum bubbles pole |
| CN111584298A (en) * | 2020-07-06 | 2020-08-25 | 广东电网有限责任公司东莞供电局 | High-reliability high-voltage vacuum circuit breaker |
-
2016
- 2016-05-03 CN CN201620388742.0U patent/CN205645670U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107644779A (en) * | 2017-09-28 | 2018-01-30 | 湖州电力设备成套有限公司 | A kind of vacuum bubbles and vacuum bubbles pole |
| CN111584298A (en) * | 2020-07-06 | 2020-08-25 | 广东电网有限责任公司东莞供电局 | High-reliability high-voltage vacuum circuit breaker |
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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: 20161012 Termination date: 20170503 |