The indoor railway pole type vacuum of a kind of single-phase one pole circuit breaker
Technical field
The utility model belongs to railway electric power system primary cut-out equipment technical field, the indoor pole type vacuum circuit breaker of particularly a kind of single-phase one pole.
Background technology
Railway power supply power system belongs to single phase system at present, and its used equipment has the single-phase one pole pattern of also having of single-phase bipolar pattern, and what general indoor circuit breaker used is single-phase one pole pattern.The railway that occurs in the market is that arc control device expose in air by air-insulated with single-phase single-pole circuit breaker, and this kind circuit breaker is shared and requisite space is big, and insulation effect is not very desirable.Moreover action required mechanism and drive mechanism are complicated, press for therefore that volume is little, simple to operate, the indoor single-phase pole type vacuum circuit breaker of reliable in function.
The utility model content
The utility model purpose is to provide the indoor railway pole type vacuum of a kind of single-phase one pole circuit breaker, little, the effective insulation of volume, simple to operate, reliable in function.
To achieve these goals; The utility model adopts following technical scheme: the indoor railway pole type vacuum of a kind of single-phase one pole circuit breaker; Comprise operating mechanism, instrument transformer, pole, be provided with drive mechanism between operating mechanism and the pole and subtract the power structure that the last outlet of pole is connected with the duck-beak type contact; The following outlet of pole is a conductive support, and conductive support is electrically connected the duck-beak type contact after being electrically connected instrument transformer again; The described power of subtracting structure comprises insulated tension pole, goes up connecting lever and following connecting lever; Insulated tension pole left end and drive mechanism are in transmission connection; One end of the right-hand member of insulated tension pole and last connecting lever and following connecting lever is hinged; The other end of following connecting lever is fixed on the conductive support, and the other end of last connecting lever is slidably disposed in the vertical slot that conductive support opens and with the moving contact transmission conduction of pole and is connected.
Described drive mechanism comprises the pull bar that an end is connected with operating mechanism, and an end of the pull bar other end and push pedal is hinged, and the central authorities of push pedal are hinged with supporting connecting lever, and the left end of the push pedal other end and insulated tension pole is hinged.
Described operating mechanism comprises electronic and manual on/off switch switch.
Described operating mechanism and instrument transformer are arranged on the guide rail car; Roller is housed on the guide rail car; The pole below is provided with and subtracts the power structure, subtracts the frame fixation of power structure one side through insulator and operating mechanism, and the conductive support outside that subtracts power structure below is connected with instrument transformer through L type conductive plate.
Described pole comprises tubular shell, is provided with arc control device in the housing, and the arc control device inwall is provided with silica gel, is provided with moving contact and fixed contact in the arc control device.
The utility model is simple in structure, volume is little, simple to operate, effective insulation, reliable in function.
Compared with prior art, the utility model specifically has following beneficial effect:
1, adopt pole to play more effective insulating effect, and assembling is simple, need not to worry that arc control device can be destroyed.
2, instrument transformer and pole connect, and reduce cabinet space hold rate.
3, operating mechanism self has combined floodgate and separating brake function, moves simple and reliable.
Description of drawings
Fig. 1 is the "on" position sketch map of the utility model;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the gate-dividing state sketch map of the utility model.
Embodiment
Embodiment: shown in Fig. 1-3; The indoor railway pole type vacuum of a kind of single-phase one pole circuit breaker; Comprise operating mechanism 2, instrument transformer 7, pole, be provided with drive mechanism between operating mechanism 2 and the pole and subtract the power structure that the last outlet 20 of pole is connected with the duck-beak type contact; The following outlet of pole is a conductive support 6, is electrically connected duck-beak type contact 8 again after conductive support 6 is electrically connected instrument transformer 7; The described power of subtracting structure comprises insulated tension pole 12, goes up connecting lever 13 and following connecting lever 14; Insulated tension pole 12 left ends and drive mechanism are in transmission connection; One end of the right-hand member of insulated tension pole 12 and last connecting lever 13 and following connecting lever 14 is hinged; The other end of following connecting lever 14 is fixed on the conductive support 6, and the other end of last connecting lever 13 is slidably disposed in the vertical slot that conductive support 6 opened and with the moving contact transmission conduction of pole and is connected.
Drive mechanism comprises the pull bar 3 that an end is connected with operating mechanism, and an end of pull bar 3 other ends and push pedal 4 is hinged, and the central authorities of push pedal 4 are hinged with supporting connecting lever 11, and the left end of push pedal 4 other ends and insulated tension pole 12 is hinged.Operating mechanism 2 comprises electronic and manual on/off switch switch.Operating mechanism 2 is arranged on the guide rail car 10 with instrument transformer 7, on the guide rail car 10 roller is housed, and can in cabinet, move.Conductive support 6 one sides that are fixed in the pole below are fixing with the framework 1 of operating mechanism 2 through insulator 5, and opposite side is connected with instrument transformer 7 through L type conductive plate.Pole 19 comprises tubular shell, is provided with arc control device 17 in the housing, and arc control device 17 inwalls are provided with silica gel 9, are provided with moving contact and fixed contact in the arc control device 17.
During practical implementation, arc control device 17 are enclosed in into pole 19 admittedly with silica gel 9, and conductive clip 16 is loaded on the moving contact place of arc control device 17, and excess of stroke stage clip 15 is fixed in through the link of vertical connecting rod 18 on the moving contact of arc control device 17, compress conductive clip 16 simultaneously.
Pole 19, conductive support 6, insulator 5 connect through bolt and are fixed on the framework 1, and through 7 strong points of instrument transformer, this layout is conserve space but also play the effect of gaining in strength not only at conductive support 6 places.
Operating mechanism 2, support connecting lever 11 are fixed in the framework 1; Operating mechanism 2 interconnects through pull bar 3 and push pedal 4 with support connecting lever 11; The other end of push pedal 4 connects insulated tension pole 12; Insulated tension pole 12 and last connecting lever 13, following connecting lever 14 compositions one subtract the power structure and are assemblied on the conductive support 6, and vertical connecting rod 18 is connected with last connecting lever 13 1 ends.Duck-beak type contact 8 is loaded on instrument transformer 7 and goes up in the outlet 20.
Fig. 1 is the utility model "on" position, and in the making process, pull bar 3 is moved to the left; Under the effect of supporting connecting lever 11, haul push pedal 4 rotations; Insulated tension pole 12 moves right, drive by last connecting lever 13, down connecting lever 14 form subtract the power structure motion, pushing drawing rod 18 moves upward; Thereby compression excess of stroke stage clip 15 fully overlaps the dynamic/static contact face in the arc control device 17, and major loop is in connection status.
Fig. 2 is the utility model gate-dividing state, and in the separating brake process, pull bar 3 moves right; Under the effect of supporting connecting lever 11, pushing away push pedal 4 rotations, insulated tension pole 12 is to left movement, drive by last connecting lever 13, down connecting lever 14 form subtract the power structure motion; Hauling pull bar 18 moves downward; Thereby the dynamic/static contact in the arc control device is separated and the maintenance certain distance, reach the arc extinguishing effect, major loop is in off-state.
Fig. 3 is shown in the front of the utility model, and each generic operation indication, signal indication etc. are arranged on the guidance panel 21.