The utility model content
The utility model embodiment provides a kind of vacuum circuit-breaker, and be used for solving prior art and drive threephase switch respectively by a driving mechanism, complicated in mechanical structure, and also the cumulative movement tolerance is big, the long and dispersed big problem of branch wire time.
The utility model embodiment provides a kind of vacuum circuit-breaker, comprises three single-phase switch unit, and wherein each described single-phase switch unit further comprises again: input, vacuum interrupter, output, driving mechanism, transmission mechanism;
Said vacuum interrupter is connected with said output, and said vacuum interrupter is connected with said driving mechanism through said transmission mechanism, and the contact of said vacuum interrupter contacts with said input or separates under the driving of said driving mechanism.
A further aspect according to the described a kind of vacuum circuit-breaker of the utility model also comprises casing, is used for supporting, fixing said three single-phase switch unit.
Another further aspect according to the described a kind of vacuum circuit-breaker of the utility model; Said single-phase switch unit also comprises current transformer and voltage transformer; Said voltage transformer is parallelly connected with said vacuum interrupter; Obtain the voltage-phase information of said vacuum interrupter, said current transformer is series at said vacuum interrupter or output, obtains current phase information.
Another further aspect according to the described a kind of vacuum circuit-breaker of the utility model; Said vacuum circuit-breaker also comprises controller; Be connected with voltage transformer with the said current transformer of each single-phase switch unit respectively; Obtain said voltage-phase information and current phase information, according to the said driving mechanism action of said voltage-phase information and current phase information Control, the contact of the said vacuum interrupter of control through driving mechanism contacts with said input perhaps and separates.
Another further aspect according to the described a kind of vacuum circuit-breaker of the utility model; When said controller detects said voltage-phase information and is zero point; Controlling said driving mechanism contacts the contact of said vacuum interrupter with said input; When said controller detects said current phase information and is zero point, control said driving mechanism the contact of said vacuum interrupter is separated with said input.
According to another further aspect of the described a kind of vacuum circuit-breaker of the utility model, the driving mechanism of said single-phase switch unit comprises permanent magnet mechanism.
Another further aspect according to the described a kind of vacuum circuit-breaker of the utility model; Said single-phase switch unit comprises, insulating cylinder, vacuum interrupter, conductive clip, be flexible coupling, connecting rod, output, keeper, conductive plate, copper swivel nut, copper nut, insulated tension pole, spring base, touch spring, pull bar, alignment pin, step pin, ring flange, mechanism fall bar, rod end bearing, permanent magnet mechanism;
Said insulating cylinder is processed by insulating material, and one-body molded with said vacuum interrupter;
Said conductive clip is socketed on the moving conductive rod of vacuum interrupter lower end, and the conductive clip both sides are close at the said two ends that are flexible coupling, and with bolt pass be flexible coupling with conductive clip and with said be flexible coupling fastening; Said connecting rod threaded one end is connected on the moving conductive rod of vacuum interrupter lower end, and the other end is threadedly connected to insulated tension pole; On insulating cylinder, said keeper is plugged in the corresponding circular hole of insulating cylinder said output with bolt, and said conductive plate is connected with bolt with output, keeper; Said copper swivel nut passes the hole that is flexible coupling with the conductive plate center, and said copper nut is threaded with the copper swivel nut, makes to be flexible coupling and conductive plate compresses; The inserts of said insulated tension pole lower end passes spring base, touch spring, and drag link sleeve is connected in the inserts of insulated tension pole lower end, and locatees with alignment pin; Said ring flange is threaded with said insulating cylinder, and said mechanism suspension rod is welded in ring flange; Said permanent magnet mechanism is lifted on mechanism's suspension rod and is threaded, and the take-off lever that said rod end bearing screws on the permanent magnet mechanism is also fastening with nut, and said pull bar and said rod end bearing are hinged, and use the step finger setting.
Through the utility model embodiment, a driver element is set in each single-phase switch unit can realizes that mechanical structure is simple, the cumulative movement tolerance is little, and branch wire time is short and dispersed little.
Embodiment
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Be illustrated in figure 1 as a kind of permanent magnetism vacuum circuit breaker constructions sketch map that can be phased of the utility model embodiment.
Comprise three single-phase switch elements 100, wherein each single-phase switch element 100 further comprises again: input 101, vacuum interrupter 102, output 103, driving mechanism 104, transmission mechanism 105.
Said vacuum interrupter 102 is connected with said output 103; Said vacuum interrupter 102 is connected with said driving mechanism 104 through said transmission mechanism 105, and the contact of said vacuum interrupter 102 contacts with said input 101 or separates under the driving of said driving mechanism 104.
Said switch element 100 also comprises current transformer 106 and voltage transformer 107; Said voltage transformer is parallelly connected with said vacuum interrupter 102; Obtain the voltage-phase information of said vacuum interrupter 102; Said current transformer 106 is series at said vacuum interrupter 102 or output 103, obtains current phase information.
Said permanent magnetism vacuum circuit-breaker that can be phased also comprises controller 108; Be connected with voltage transformer with the said current transformer of each single-phase switch unit respectively; Obtain said voltage-phase information and current phase information; According to said voltage-phase information and said driving mechanism 104 actions of current phase information Control, the contact of controlling said vacuum interrupter 102 through the transmission of transmission mechanism 105 contacts with said input 101 perhaps and separates.Therefore only drawn the detailed structure of one of them single-phase switch in the drawings, other two single-phase switchs are not drawn because structure is identical, and the current phase signal of single-phase switch and voltage phase signal all output in the controller 108.
Said driving mechanism 104 can be permanent magnet mechanism.
When the said voltage-phase information of said controller 108 detections is zero point (0V); Controlling said driving mechanism 104 contacts the contact of said vacuum interrupter 102 with said input 101; When the said current phase information of said controller 108 detections is zero point (being 0A), controls said driving mechanism 104 contact and the said input of said vacuum interrupter 102 were opened in 101 minutes.
Be illustrated in figure 2 as the overall structure figure of a kind of permanent magnetism vacuum circuit-breaker that can be phased of the utility model embodiment.
Comprise three independent single-phase switch unit 201; Also comprise casing 202; This casing 202 plays the effect of supporting and fixing said single-phase switch unit 201, and each single-phase switch unit 201 all comprises a vacuum interrupter and the single phase permanent magnetic mechanism that drives vacuum interrupter, therefore; Three-phase separate single-phase switch element can be implemented in the different breaking-closing operatings that constantly carry out, to realize selecting synchronously the purpose of phase divide-shut brake.
Wherein each single-phase switch unit 201 is fixedly installed on the said casing 202, and the centre distance between the single-phase switch unit 201 is 280mm, the safe distance of this distance for setting.
For other embodiment; The indicating device and the divide-shut brake position detecting device that can also comprise divide-shut brake are fixedly installed in the said casing; Wherein the indicating device of divide-shut brake and divide-shut brake position detecting device can use equipment of the prior art, in the utility model, repeat no more.
Be illustrated in figure 3 as the concrete structure figure of the utility model embodiment single-phase switch unit.
Single-phase switch unit in above-mentioned accompanying drawing 1 and the accompanying drawing 2 can use the single-phase switch unit in the present embodiment.
Comprise: insulating cylinder 301, vacuum interrupter 302, conductive clip 303, be flexible coupling 304, connecting rod 305, output 306, keeper 307, conductive plate 308, copper swivel nut 309, copper nut 310, insulated tension pole 311, spring base 312, touch spring 313, pull bar 314, alignment pin 315, step pin 316, ring flange 317, mechanism fall bar 318, rod end bearing 319, permanent magnet mechanism 320, input 321.
Said insulating cylinder 301 is processed by insulating material, and one-body molded with said vacuum interrupter 302.
Said conductive clip 303 is socketed on the moving conductive rod of vacuum interrupter 302 lower ends, and conductive clip 303 both sides are close at said 304 the two ends of being flexible coupling, and with two bolts pass in the lump be flexible coupling 304 with conductive clip 303 and it is fastening.Said connecting rod 305 threaded one ends are connected on the moving conductive rod of vacuum interrupter 302 lower ends, and the other end is threadedly connected to insulated tension pole 311.Said output 306 (output) is plugged in the insulating cylinder relevant position, and with bolt on insulating cylinder.Said keeper 307 is plugged in the corresponding circular hole of insulating cylinder.Said conductive plate 308 is connected with output 306, keeper 307 usefulness bolt.Said copper swivel nut 309 pass be flexible coupling 304 with the big hole at conductive plate 308 centers, said copper nut 310 is threaded with the copper swivel nut, make be flexible coupling 304 and conductive plate 308 compress.The inserts of said insulated tension pole 311 lower ends passes spring base 313, touch spring 313, and pull bar 314 is socketed in the inserts of insulated tension pole 311 lower ends, and with alignment pin 315 location.Said ring flange 317 is threaded with said insulating cylinder 301, and said mechanism suspension rod 318 is welded in ring flange 317 relevant positions.Said permanent magnet mechanism 320 is lifted on mechanism's suspension rod 318 and is threaded.Also fastening with nut on the take-off lever of said rod end bearing 319 screw-in permanent magnet mechanisms 320 upper ends, said pull bar 314 and said rod end bearing 318 are hinged, and with step pin 316 location.
Said permanent magnet mechanism 320 drives said vacuum interrupter 302 through the transmission mechanism that is connected with said vacuum interrupter 302 contact contacts with said input 321 or separates the open and close operation that realizes the single-phase switch unit.
Current transformer is gathered current phase signal, can be series at output 306, also can connect with said vacuum interrupter 302; And send the current phase signal of gathering to controller; Voltage transformer is gathered voltage phase signal, is parallel to said vacuum interrupter 302 two ends, and sends voltage phase signal to controller; Controller is when closing operation; Detect the zero crossing of three single-phase switch cell voltage phase places, detect zero point after, controller sends switching signal to three single-phase switch unit respectively; The permanent magnet mechanism of three single-phase switch unit drives insulated tension pole separately and drives the vacuum interrupter moving contact and moves upward and contact the completion closing operation with input; Controller is when sub-switching operation; Detect the zero crossing of three single-phase switch cell current phase places; After detecting zero point; Controller sends sub-gate signal to three single-phase switch unit respectively, and the permanent magnet mechanism of three single-phase switch unit drives insulated tension pole separately and drives the vacuum interrupter moving contact and moves downward with input and separate, and accomplishes sub-switching operation.
Through the utility model embodiment, vacuum circuit-breaker that can be phased is made up of three independences and identical single-phase switch and casing, and module design is easy to assembly; The vacuum interrupter of single-phase switch unit and join single phase permanent magnetic mechanism employing direct drive mode, transmission link is few, and branch wire time is short, and the branch wire time dispersiveness is little; The three-phase vacuum interrupter is driven respectively by three permanent magnet mechanisms, and can be implemented in voltage over zero and close a floodgate, at current phase zero crossing separating brake, and three-phase mutual deviation 120 degree, realize synchronous deciliter purpose.
Above-described embodiment; Purpose, technical scheme and beneficial effect to the utility model have carried out further explain, it should be understood that the above is merely the embodiment of the utility model; And be not used in the protection range that limits the utility model; All within the spirit and principle of the utility model, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.