CN201229892Y - Intelligent high voltage dual power supply converting switch - Google Patents
Intelligent high voltage dual power supply converting switch Download PDFInfo
- Publication number
- CN201229892Y CN201229892Y CNU2008200851719U CN200820085171U CN201229892Y CN 201229892 Y CN201229892 Y CN 201229892Y CN U2008200851719 U CNU2008200851719 U CN U2008200851719U CN 200820085171 U CN200820085171 U CN 200820085171U CN 201229892 Y CN201229892 Y CN 201229892Y
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- switching
- main shaft
- contact
- intelligent high
- dual power
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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The utility model discloses an intelligent high-voltage double power change-over switch, comprising an air-tight box, three main power terminals, three standby power terminals, three load terminals arranged on an air-tight box body and a power switching mechanism arranged in the air-tight box. The power switching mechanism comprises a change-over main shaft and three switching contacting cutter which can be driven by the change-over main shaft to rotate by a certain angle. The utility model has the advantages of simple structure, lower cost and being capable of eliminating potential safety hazards effectively.
Description
Technical field
The utility model belongs to high-voltage electrical apparatus switching technique field, is specifically related to a kind of intelligent high-voltage dual power conversion switch.
Background technology
At present, in order to improve the reliability of power supply, a large amount of dual power supply circuits (two supply line generally is a circuit on power system, and from reserve line) that adopt in the electric power system are when a line power breaks down, by another line powering.Need by control device, indoor will the employing is no less than two high-tension switch cabinets for this reason, and the open air is no less than high-voltage switch gear on two important actors, could realize selecting the requirement of supply line.This control mode has not only increased user's equipment and operating cost, but also the accident of power supply hidden danger that lies dormant.High-voltage switch gear on two and the above high-tension switch cabinet/post is difficult to realize the mechanical chain between the high-voltage switch gear on high-tension switch cabinet/post.It is generally acknowledged that the electrical interlocks that control device is only arranged is insecure,, will lead to major accident in case duplicate supply feed simultaneously all might appear in control device fault or operations staff's misoperation.
Also have at present to adopt and on vacuum circuit-breaker, install the high-voltage dual power conversion equipment that double-throw disconnecting switch is formed additional, though this kind mode has realized high-voltage dual power and has had electrical interlocks and mechanical chain when automaticallying switch, reduced the two-way high pressure possibility of feed simultaneously, it is present more satisfactory high-voltage dual power switching device shifter, but also there is drawback, the isolating switch of its double-throw is directly exposed in the air, along with number of times that uses and the increase of time, the continuous oxidation of contact surface meeting, cause contact resistance to increase conductive capability and reduce, contact heating easily such as burns out at shortcoming.In addition, owing to be to adopt isolating switch to switch actuator, because electric power in use is sternly to forbid the on-load branch, close isolating switch as power supply; So could use isolating switch to finish switching motion after must making the vacuum circuit-breaker separating brake cut off load earlier by controller before each the switching.In case controller breaks down, under the situation that does not disconnect vacuum circuit-breaker, the isolating switch on-load just carries out switching motion, and powerful load instantaneous outage voltage can be easily with air breakdown, cause arc short-circuit, cause accidents such as personnel's equipment damage and line powering fault.
The utility model content
The purpose of this utility model provide a kind of simple in structure, cost is lower and the intelligent high-voltage dual power conversion switch that can effectively eliminate safe hidden trouble.
The technical scheme that realizes the utility model purpose is: a kind of intelligent high-voltage dual power conversion switch, comprise pressure box, be arranged on three main power source binding posts on the pressure box casing, three stand-by power supply binding posts and three load wiring posts, and be arranged on the power supply switching mechanism in the pressure box; Described power supply switching mechanism comprises a switching main shaft, can be switched that main shaft drives and three switching contact knifes turning an angle.
In the technique scheme, described each switching contact knife is the V-type contact knife, and described switching mechanism also comprises and being used for as the contact knife rotating shaft of each V-type contact knife rotary middle spindle and the insulated tension pole that is used to connect switching main shaft and each V-type contact knife.
In the technique scheme, described each switching contact knife is the yi word pattern contact knife, and described each switching contact knife is fixed on and switches on the main shaft.
In the technique scheme, be filled with sulfur hexafluoride gas in the described pressure box.
In the technique scheme, this switch also comprises a three-phase vacuum breaker device, described three-phase vacuum breaker device comprises three vacuum interrupters, three moving contacts, three fixed contacts and an operating mechanism, described each moving contact/fixed contact is electrically connected with a corresponding switching contact knife, and described each fixed contact/moving contact is electrically connected with a corresponding load wiring post.
In the technique scheme, the outer surface of the fixed contact of described each vacuum circuit-breaker is provided with insulated column, and is arranged on the box outer surface directly as the load wiring post.
In the technique scheme, described operating mechanism comprises driving main shaft and the drive rod that is used to be connected driving main shaft and moving contact.
The utlity model has positive effect:
(1) the utility model is compared with the high-voltage alternating three-phase double power-supply load swith of Chinese patent 200510061855.6 disclosed a kind of sulphur hexafluoride formulas, reduced by a switching main shaft, by three the switching contact knifes and the mechanical interlocking device of this switching main shaft, simplified its structure greatly; Even the utility model product is damaged for some reason in addition, owing to only have one group of switching contact knife, and can only be electrically connected with one group of power-line terminal at most, so the duplicate supply accident of feed simultaneously can not take place, effectively eliminate safe hidden trouble.
(2) be filled with sulfur hexafluoride gas in the pressure box of the present utility model, have arc quenching effect preferably, effectively guarantee the electric life of switching contact knife and power-line terminal.
(3) the utility model also can add vacuum circuit-breaker; by additional conventional current transformer, voltage transformer, zero-sequence transformer and control circuit; can realize overload, overvoltage, phase shortage and three-phase imbalance protection, effectively ensure the safe handling of load appliance.
Description of drawings
Fig. 1 is that the master of first kind of structure of the utility model looks outline drawing;
Fig. 2 is that the A of intelligent high-voltage dual power conversion switch shown in Figure 1 is to view;
Fig. 3 is that the B of intelligent high-voltage dual power conversion switch shown in Figure 1 is to view;
Fig. 4 is the structural representation of intelligent high-voltage dual power conversion switch shown in Figure 1;
Fig. 5 is second kind of structural representation of the present utility model;
Fig. 6 is the third structural representation of the present utility model.
Reference numeral is: draw together pressure box 1, casing 11, main power source binding post 2, stand-by power supply binding post 3, load wiring post 4, power supply switching mechanism 5, switch main shaft 51, switching contact knife 52, contact knife rotating shaft 53, insulated tension pole 54, three-phase vacuum breaker device 6, vacuum interrupter 61, moving contact 62, fixed contact 63, insulated column 631, operating mechanism 64, driving main shaft 641, drive rod 642.
Embodiment
(embodiment 1)
Fig. 1 to Fig. 4 has shown a kind of embodiment of the present utility model, and wherein Fig. 1 is that the master of first kind of structure of the utility model looks outline drawing; Fig. 2 is that the A of intelligent high-voltage dual power conversion switch shown in Figure 1 is to view; Fig. 3 is that the B of intelligent high-voltage dual power conversion switch shown in Figure 1 is to view; Fig. 4 is the structural representation of intelligent high-voltage dual power conversion switch shown in Figure 1.
Present embodiment is a kind of intelligent high-voltage dual power conversion switch, see Fig. 1 and Fig. 4, comprise pressure box 1, be arranged on three the main power source binding posts 2 on the pressure box casing 11, three stand-by power supply binding posts 3 and three load wiring posts 4, be arranged on power supply switching mechanism 5 and operating mechanism (not drawing on the figure) in the pressure box 1; Described power supply switching mechanism 5 comprises a switching main shaft 51, can be switched that main shaft 51 drives and three switching contact knifes 52 turning an angle, be used for as the contact knife rotating shaft 53 of each V-type contact knife rotary middle spindle and be used to connect the insulated tension pole 54 that switches main shaft 51 and each V-type contact knife.Be filled with sulfur hexafluoride gas in the described pressure box 1.See Fig. 4, described each switching contact knife 52 is V-type contact knifes, common V-type contact knife has " three stations " and " two stations " two kinds, described " three stations " V-type contact knife is meant on first station that contact knife 52 can rest on main power source binding post 2 is electrically connected, with on second station that stand-by power supply binding post 3 is electrically connected and be positioned at that main power source binding post 2 hits exactly with stand-by power supply binding post 3, neither is electrically connected with main power source binding post 2, the also V-type contact knife of (being position shown in Figure 4) on the 3rd station that stand-by power supply binding post 3 is electrically connected not.Described " two stations " is meant and can only rests on foregoing first station and second station, can not rest on the V-type contact knife of the switching mechanism on the 3rd station.Present embodiment is a kind of three station V-type contact knifes, in a body practice, also can adopt two station V-type contact knifes certainly.Described each V-arrangement contact knife 52 directly is electrically connected with a corresponding load wiring post 4.
Present embodiment has positive advantage: (1) present embodiment is compared with the high-voltage alternating three-phase double power-supply load swith of Chinese patent 200510061855.6 disclosed a kind of sulphur hexafluoride formulas, reduced by a switching main shaft, by three the switching contact knifes and the mechanical interlocking device of this switching main shaft, simplified its structure greatly; Even the present embodiment product is damaged for some reason in addition, owing to only have one group of switching contact knife, and can only be electrically connected with one group of power-line terminal at most, so the duplicate supply accident of feed simultaneously can not take place, effectively eliminate safe hidden trouble.
(embodiment 2)
Fig. 6 is second kind of structural representation of the present utility model, has shown second kind of embodiment of the present utility model.
Present embodiment is substantially the same manner as Example 1, difference is: see Fig. 6, this switch also comprises a three-phase vacuum breaker device 6, and described three-phase vacuum breaker device 6 comprises three vacuum interrupters 61, three moving contacts 62, three fixed contacts 63 and operating mechanisms 64; Described each moving contact 62 is flexible coupling with a corresponding switching contact knife 6; Described operating mechanism 64 comprises driving main shaft 641 and the drive rod 642 that is used to be connected driving main shaft 641 and moving contact 62; Thereby the outer surface of the fixed contact of described each vacuum circuit-breaker 63 is provided with insulated column 631 and forms an insulating terminal, and the described insulating terminal that is enclosed with fixed contact 63 is arranged on casing 11 outer surfaces and directly uses as load wiring post 4.
What adopt in the present embodiment is that moving contact 62 is flexible coupling with the switching contact knife; fixed contact 63 direct execution modes as load wiring post 4; in concrete practice; also can adopt vacuum breaker device 6 is built in the pressure box 1 fully; fixed contact 63 and switching contact knife are flexible coupling; the structure that moving contact 62 and load wiring post 4 are flexible coupling, this also belongs within the utility model scope required for protection.
(embodiment 3)
Fig. 5 is the third structural representation of the present utility model, has shown the third embodiment of the present utility model.
Present embodiment is substantially the same manner as Example 2, and difference is: see Fig. 5, described each switching contact knife 52 is yi word pattern contact knifes, and described each switching contact knife 52 is fixed on and switches on the main shaft 51.
Obviously, the foregoing description of the present utility model only is for the utility model example clearly is described, and is not to be qualification to execution mode of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all execution modes.And these belong to conspicuous variation or the change that spirit of the present utility model extended out and still are among the protection range of the present utility model.
Claims (7)
1, a kind of intelligent high-voltage dual power conversion switch, comprise pressure box (1), be arranged on three main power source binding posts (2), three stand-by power supply binding posts (3) and three load wiring posts (4) on the pressure box casing (11), and be arranged on the power supply switching mechanism (5) in the pressure box (1); It is characterized in that: described power supply switching mechanism (5) comprises a switching main shaft (51), can be switched that main shaft (51) drives and three switching contact knifes (52) of turning an angle.
2, intelligent high-voltage dual power conversion switch according to claim 1, it is characterized in that: described each switching contact knife (52) is the V-type contact knife, and described switching mechanism (5) also comprises and being used for as the contact knife rotating shaft (53) of each V-type contact knife rotary middle spindle and the insulated tension pole (54) that is used for connecting switching main shaft (51) and each V-type contact knife.
3, intelligent high-voltage dual power conversion switch according to claim 1 is characterized in that: described each switching contact knife (52) is the yi word pattern contact knife, and described each switching contact knife (52) is fixed on and switches on the main shaft (51).
4, intelligent high-voltage dual power conversion switch according to claim 1 is characterized in that: described pressure box is filled with sulfur hexafluoride gas in (1).
5, intelligent high-voltage dual power conversion switch according to claim 1, it is characterized in that: this switch also comprises a three-phase vacuum breaker device (6), described three-phase vacuum breaker device (6) comprises three vacuum interrupters (61), three moving contacts (62), three fixed contacts (63) and an operating mechanism (64), described each moving contact (62)/fixed contact (63) is electrically connected with a corresponding switching contact knife (6), and described each fixed contact (63)/moving contact (62) is electrically connected with a corresponding load wiring post (4).
6, intelligent high-voltage dual power conversion switch according to claim 6, it is characterized in that: the outer surface of the fixed contact of described each vacuum circuit-breaker (63) is provided with insulated column (631), and is arranged on casing (11) outer surface directly as load wiring post (4).
7, intelligent high-voltage dual power conversion switch according to claim 6 is characterized in that: described operating mechanism (64) comprises driving main shaft (641) and the drive rod (642) that is used to be connected driving main shaft (641) and moving contact (62).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200851719U CN201229892Y (en) | 2008-04-03 | 2008-04-03 | Intelligent high voltage dual power supply converting switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200851719U CN201229892Y (en) | 2008-04-03 | 2008-04-03 | Intelligent high voltage dual power supply converting switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201229892Y true CN201229892Y (en) | 2009-04-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200851719U Expired - Fee Related CN201229892Y (en) | 2008-04-03 | 2008-04-03 | Intelligent high voltage dual power supply converting switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201229892Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105679574A (en) * | 2016-03-30 | 2016-06-15 | 黄文平 | Dual-power source automatic change-over switch |
| CN105788910A (en) * | 2016-05-25 | 2016-07-20 | 林益晶 | Dual-power manual change-over switch |
| CN105788896A (en) * | 2016-05-25 | 2016-07-20 | 林益晶 | Design method for dual-power manual change-over switch |
-
2008
- 2008-04-03 CN CNU2008200851719U patent/CN201229892Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105679574A (en) * | 2016-03-30 | 2016-06-15 | 黄文平 | Dual-power source automatic change-over switch |
| CN105788910A (en) * | 2016-05-25 | 2016-07-20 | 林益晶 | Dual-power manual change-over switch |
| CN105788896A (en) * | 2016-05-25 | 2016-07-20 | 林益晶 | Design method for dual-power manual change-over switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090429 Termination date: 20110403 |