Arc chamber

 

(57) Abstract:

Usage: the invention relates to electrical engineering and can be used in low-voltage switching devices, in particular in the contactors AC / DC. The inventive arc chamber contains insulated, equipped with two slots of the plate, installed on the principle of mirroring, and the slots in the plates, have an uneven distance from the side faces. Plate 3 provided with projections 4 on the lateral faces and the groove 5 in the lower part of the plate, and one of the slits 6 is composed of two parallel side face located at a different distance from her plots, United sloped section 8, while the end of the slits bent towards the bottom of the protrusion side face and the other slot 7 is made with an inclination relative to the axis Palestine 3, with its upper end positioned in the area of the inclined section 8 of the slot 6, and its lower end is placed in the zone of the lower ledge of the opposite lateral side, and between the slits has the isthmus. 3 Il.

The invention relates to elektroapparatstroy and can be used in low-voltage switchgear, in particular isim number located at a certain distance from one another isolated plates, provided with a tapering in the direction of movement of the arc slots. The plates are made of two kinds. One of the plates cut made in the middle, in other species, a pair of slits diverging in the direction of movement of the electric arc [1]

Known arc chamber insulated with two slots of the plates, and the plates are mounted alternately on the principle of mirroring and each plate slots are unequal distance from the side faces of the plate. The result is two parallel zig-zag path of the electric arc [2], it was Assumed that this design deionno grid will allow you to split the arc into two parallel zigzag arc, which will reduce the local heating of the plates and increase the surface contact plate with circular arcs. However, as practice shows, in the case of two parallel arcs, one of them instantly goes off. The result will be a steady burn only one zigzag electric arc passing through one slot in the plate. The speed of movement of the arc in the lattice decreases and Gorenje arc stops before the division into partial arcs, which leads to local melting of the plates. Cu is and the side edge and will move it bypassing the slots.

The objective of the invention is to increase the efficiency of quenching of the arc.

The problem is solved due to the fact that in the interrupter chamber insulated with two slots of the plates, and the plates are mounted alternately on the principle of mirroring and each plate slots are unequal distance from the side faces of the plate, the plate is provided with protrusions on lateral sides and a groove in the lower part of the plate, and one of the slots comprises two parallel side faces, placed at different distances from it sections connected by an inclined section, and the end of the slot is made deflected towards the bottom ledge on the side of, and another cut is made with an inclination to the axis of the plate and the upper end is placed in the area of the slant section of the other of the slot and the lower end is located in the area of the ledge opposite face, and between the slits has the isthmus.

The novelty of the proposal is a new set of features. Inventive step is confirmed by the fact that the interaction between the characteristics of the new aggregate can get a new property, expressed in the fact that BL is the spots to the edges of the plates, and then with the approach of partial arcs to edges of the slots form a single unstable zigzag electric arc, the decay of which will rashodyatsya thermal energy partial arcs. This will accelerate the collapse of the arc.

In Fig. 1 shows a fragment of the proposed interrupter chamber; Fig. 2 is an insulating plate of Fig. 3 section a-a in Fig. 1.

Arc chamber consists of a casing 1 in which are placed two insulating plate 2, between which there is deione metal plate 3. Plate 3 is installed on the principle of mirroring.

Each plate 3 has on the side faces of the protrusions 4, included in the slots of the plates 2 and the groove 5 in the lower part of the plate. In the groove 5 place the contacts (not shown). The plate is provided with two slots 6 and 7. Cut 6 consists of two parallel side faces, placed at different distances from it sections connected by a sloped section 8. The end of the slot 6 bent in the direction of the protrusion 4 on the side, blocking part of the plate between the groove and a lateral edge. The slot 7 is designed with an angle to the axis of the plate, and its upper end is placed in the area of the inclined section 8 of the slot 6, and the lower its way. Electric arc that occurs when disconnecting contacts placed in the groove 5, gets on the plate 3 and moves over them. When approaching the edges of the slots in the lower part of the plate is formed of a single electric arc, moving along the edge of one of the slots 6 to slant section 8, and then direct the upper part. Because of the mirror location of the plates 3 slots are located on opposite sides of the middle plate is formed zigzag arc, to maintain which additionally consumed heat energy, which accelerates the decay of the arc.

When performing this device increases the heat-absorbing ability deeannah plates, accelerated the disintegration of the arc decreases the total hydrodynamic resistance to movement of ionized gases, eliminates arcing at the edge of the grating, since the arc is reduced at the edges of the slots. This increases the efficiency of the damping decreases ionized zone of the exhaust, and never re-ignition of the arc in the gap between the contacts.

ARC CHAMBER insulated with two slits plates mounted alternately on the principle of mirroring, and the slots in the plates kaupapa in the lower part of the plate, and one of the cuts is composed of two parallel side face located at a different distance from her plots, United sloping land, while the end of the slits bent towards the bottom ledge on the side, and another cut is made with an inclination relative to the axis of the plate, and its upper end is located in the zone of slope a different slot, its lower end is placed in the zone of the lower ledge of the opposite lateral side, and between the slits has the isthmus.

 

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