Arc suppressor and contact breaker equipped with one such arc suppressor

FIELD: electrical engineering.

SUBSTANCE: arc suppressor contains an arc suppression chamber (21) formed by a package of de-ionising plates (22), an arc generation chamber (11) delimited by the first side wall (12) and the second side wall (13) and a means for removal of gases generated during electric arc occurrence, the means containing a removal channel (31) positioned behind the second side wall and connected with at least one exchange space (24). The arc suppression chamber contains permanent magnets, at least part of them placed behind the first side wall (12). The removal means has a hole formed partially in the second side wall (13) and opening to the arc suppressor outside.

EFFECT: enhanced effectiveness of arc suppression without increase of the commutation device volume.

10 cl, 4 dwg

 

Prerequisites to the creation of inventions

The present invention relates to the field of terminating devices, in particular devices that interrupt DC.

The present invention relates to arc-quenching device for a circuit breaker containing:

camera extinguish the arc formed by the package deionizers plates, separated from each other by the exchange space,

chamber education arc contentnow the first sidewall and the second sidewall, and

- remove gases for removal of gases generated during the occurrence of the arc containing the channel to delete, located outside the second side wall and connected to at least one exchange space.

The invention also relates to a circuit breaker containing a partial contact and interrupter device to extinguish the arc formed at the opening of the mentioned contacts.

Prior art

In interrupting devices such as circuit breakers, by opening contacts are usually formed by the electric arc, which should dissipate in the interrupter device. Electric arc usually should be cooled as quickly as possible, while remaining at a distance from the electrical contacts. Such cooling is typically provided by pomeshhenijami in the camera blowout, formed by the package deionizers ribs or plates, separated from each other by the exchange space and providing a more efficient exchange.

After the formation, before to be placed in the damping of the arc, the electric arc moves in the chamber education arc contoured side walls or side, usually through the exchange of space between diiodotyrosine plates. In practice, an electrical arc may be released to the damping of the arc under the action of electrodynamic forces generated by the magnetic field due to flowing in the conductors shock. Exchange space between diiodotyrosine plates reinforce the movement of the arc to the back of the camera. Additionally, the package deionizers plates provides tearing arc and facilitates its placement in the camera blowout. Additionally, the camera blowout diiodotyrosine plates contain an electric arc, which tends to expand, occupying all available space.

Electrical arcing is accompanied by the emission of significant amounts of metal vapors which, if they are not removed, in particular can cause a connecting arc between the phases of the electrical switching device and to cause an explosion. There are many solutions to use the Deposit removal tool to remove gases, generated during the occurrence of the arc. These solutions provide for the removal of gases from the zone near the contact, or even outside of the switching device or the recirculation within the switching device, for example, to fulfill the requirements of the environment.

One such solution is known from French patent application FR2879016, which describes the electrical switching device containing the camera blowout, Windows that open space, and mentioned the camera is contoured by two side walls and is equipped with a package deionizers plates, separated from each other by the exchange spaces. Electrical switching device described in this patent application, additionally includes the removal tool, in this case, the channel deleting, located behind the side walls and connected to the exchange by spaces.

This type of solution may have certain disadvantages, such as increased electrical switching device around the interrupter device. In fact, the gases are directed to the removal tool, which fills the interrupter device and/or surrounding space.

The invention

The present invention is to eliminate the disadvantages interrupter device is zvezdnogo prior art by proposing interrupter device for breaker, contains:

camera extinguish the arc formed by the package deionizers plates, separated from each other by the exchange space,

chamber education arc contentnow the first sidewall and the second sidewall, and

- remove the gases produced during arcing, containing the channel deletion, located in the second sidewall and connected to at least one exchange space.

In accordance with the present invention interrupter device includes permanent magnets, and at least part of these magnets are located outside the first sidewall, and a means of removing gases contains a hole formed partially in the second sidewall, and an opening outside of the interrupter device.

Preferably the camera of education arc contains:

section increased induction, in which an electrical arc is moving towards the camera blowout under the influence of a magnetic field generated by the first part of permanent magnets, and

- deflecting section in which the electric arc is deflected relative to the longitudinal axis of the chamber education arc toward the first sidewall under the action of the magnetic field generated by the second part of permanent magnets, and the entire second part of permanent magnets placed behind the first the second sidewall.

Preferably the first part of permanent magnets includes two magnetized area, located behind each of the side walls.

Two magnetized section of the first part of the permanent magnets preferably are arranged symmetrically relative to the longitudinal axis of the chamber formation of the arc.

In accordance with one embodiment, the hole part formed in the housing wall.

In accordance with one embodiment, the channel deletion takes place between at least one exchange space and the hole and is essentially constant or decreasing cross-section.

In accordance with one embodiment diiodotyrosine plates contain a front edge, equipped with a Central recess.

In accordance with one embodiment, the first sidewall made of a ceramic material. Preferably, the second sidewall made of gas-forming material.

The present invention also relates to a circuit breaker containing a partial contact and interrupter device to extinguish the arc formed at the opening of the mentioned contacts, which has the above interrupter device.

Brief description of drawings

Other advantages and features will become clearer from bringing the military following description of specific embodiments of the present invention, presented only as a non-limiting example and illustrated in the accompanying drawings.

Figure 1 depicts a longitudinal cross-section of the arc-suppressing device in accordance with the present invention.

Figure 2 depicts the cross-section of the same interrupter device along the axis a-a'shown in figure 1.

Figure 3 depicts another cross-section of the same interrupter device along the axis of the In-' shown in figure 1.

Figure 4 depicts the cross-section of the same interrupter device along the axis C-C'shown in figure 3.

Detailed description of option exercise

As illustrated in figures 1 and 4 pole node of the circuit breaker includes a movable contact 1 and the fixed contact 2, and each of these contacts is connected by a conductor connecting terminal of the circuit breaker. Control-break movable contact may be the driving mechanism by means of a handle or by a disconnecting means that are not illustrated. This release means may include an electromagnetic tripping device and a thermal tripping device, both devices provide automatic opening sliding contact in case of an overload and/or short circuit.

Elements of PR is rivately, such as shared contacts, drive mechanism and a disconnect means, usually placed in a die-cast housing 3 made of insulating material. As illustrated in figure 1, the housing 3 also contains interrupter device 4 that is designed to extinguish the electric arc 5 formed between the shared contacts when opening the latter.

As illustrated in figures 1 and 2, the interrupter device 4 contains a camera of education arc 11, ochotorena the first sidewall 12 and second sidewall 13. One terminal pole node of the circuit breaker electrically connected to the fixed contact 2 and extended to form the electrode or horn 14 of the spark gap, which is stretched in the upper part of the chamber formation of the arc. The other pole terminal node of the circuit breaker electrically connected to the movable contact 1 is connected with another electrode or the horn 15 of the spark gap, which is stretched at the bottom of the camera of education of the arc. Electrodes or horn 14 and 15 of a spark gap positioned to capture an arc extending between pins 1 and 2, when there is a separation of the latter. Thus, an electrical arc formed between the two contacts, captured by the electrodes to move and delete in the chamber 21 arc-quenching of arc-quenching devices.

As illustrated in figures 1 and 2, Cam is RA 21 extinguish the arc formed by using package deionizers plates 22, which are usually metal plates. Diiodotyrosine plates contain front edge through which an electrical arc is included in the damping of the arc. As you can see in figure 1, the front edge deionizers wafer typically contains a Central recess 23. Diiodotyrosine plate 22 are separated from each other by the exchange spaces 24. As can be seen in figures 1 and 2, the exterior surface of the sidewalls 12 and 13 on the side on which the camera is located in the education of the arc is slightly curved to provide better electrical arc in the Central recess 23 deionizers plates. Exterior surface of the sidewalls 12 and 13 from the side on which the camera is education arcs contain the edge 25 defining the change in the slope of the mentioned outer surfaces next to the camera 21 blowout.

As can be seen in figures 1, 3 and 4, the interrupter device includes permanent magnets 32, 33, illustrated by shaded in figure 1, at least part 32 of which are located outside the first sidewall 12. Preferably most or all of the permanent magnets are located in the first sidewall 12. Thus, it appears asymmetrical position relative to the longitudinal axis a-a'when the device contains at least some or even most or all of the permanent magnets with one of the parties, and the removal tool with the other hand. With this arrangement, the electric arc is attracted by the permanent magnet 32.

As illustrated in figures 1, 3 and 4, the interrupter device contains a gas removal tool to remove gases generated during the creation of an electric arc. As you can see in figure 1, the removal tool includes a channel 31 removal, located behind the part of the second sidewall 13 and connected to at least one exchange space 24. Due to the asymmetrical arrangement in which the second sidewall 13 is only part or even no permanent magnets, the available space of the second sidewall can be used to accommodate removal tools, such as channel 31 removal. Thus, the channel deletion is for this second sidewall without increasing the volume of switching devices around interrupter device and without changing the shape of the hull. Thus, the channel 31 of removal does not fill interrupter device and/or surrounding space.

As you can see in figure 3 and 4, channel 31 deleting formed mainly through the side wall of the casing 3 and the surface of the sidewall 13, addressed to the chassis. On its surface facing the housing, the sidewall 13 includes a wall 34, which communicates with the internal on what Ernesto case 3, when a switching node is assembled. This wall 34, among other things, prevents any contact of the released gases from the magnet 33. This wall 34 also forms part of the channel 31 of removal. On its surface facing the housing side wall 13 includes a recess 35, which faces to the front edges deionizers plates at the top of the camera blowout. This groove 35 communicates, after Assembly, with the edge walls formed in the housing. The sidewall 13 further comprises a reinforcement 36, the peripheral surface of which interact, after Assembly, with the edge walls formed in the housing. The sidewall further comprises a curved edge 37, interacting, after Assembly, the extension 38 of the walls formed in the housing. Thus, the channel 31 is formed by removal assistance:

- the surface of the sidewall 13 facing the inner surface of the case 3;

- mentioned inner surface of the case 3;

the wall 34 of the sidewall communicating with the inner surface of the housing 3;

the walls of the casing, the edges of which cooperate with the notch 35, the peripheral surface of the reinforcement 36; and

- lengthening of the above-mentioned edges, interacting with a curved edge 37 of the sidewall 38.

As can be seen in figure 3, the edge 39 of the upper end of the sidewall 13 does not interact with the body the donkey Assembly. Thus, the edge 39 of the sidewall 13 forms a hole 40 with a portion of the extension wall 38 formed in the housing, ensuring the removal of effluent gases beyond the arc-quenching devices. Thus, the gases listed in the channel 31 of removal, removed beyond the arc-quenching devices through openings 40 formed partially in the second sidewall and partially through the extension 38 of the wall, placed on the inner surface of the shell.

As illustrated in figure 1, the camera of education arc section contains 41 high induction, in which an electrical arc moves into the chamber 21 of the arc extinction under the action of the magnetic field generated by the first part of permanent magnets. The magnetic field generated by the first part of permanent magnets section increased induction is stronger compared to created another part of the permanent magnets in the rest of the camera of education of the arc. This provides the best movement of the electric arc and forced separation of the latter from the shared contacts. Thus, switching the base of an electric arc between the movable contact 1 and the electrode 15 mainly provided by the first part of permanent magnets section increased induction chamber education arc. In case of interruption of a weak DC electric that is as magnetic induction, created by current flow in the electrodes 14 and 15, is not strong enough to move the arc into the chamber 21 of the arc extinction. Thus, the placement of permanent magnets provides amplification of the magnetic field to move the electric arc.

As illustrated in figure 1, the first part of permanent magnets includes two magnetized area, located behind each of the sidewalls. These two magnetized area is essentially formed by a magnet 33 and part 43 of the magnet 32 located in section 41 of the increased induction. These two magnetized section 33 and 43 of the first part of permanent magnets are arranged symmetrically relative to the longitudinal axis a-a' 10 camera of education of the arc. This allows you to optionally enhance the distinctive features described above, i.e. to ensure the best movement of the electric arc in the camera blowout.

As illustrated in figure 1, the camera of education arc also contains deflecting section 51, in which the electric arc is deflected relative to the longitudinal axis 10 of the camera of education arc toward the first sidewall 12. The arc is deflected under the action of the magnetic field generated by the second part of permanent magnets, i.e. magnetized section 52 of permanent magnets 32. In figure 1 the points 26 are illustrated various provisions electr the character arc. With this arrangement, the magnetic field generated by the second part of permanent magnets along the longitudinal axis a-a', is weaker compared with the generated first part of permanent magnets. Furthermore, the magnetic field created by the second part of permanent magnets, is not symmetric with respect to the mentioned longitudinal axis. This contributes to the deviation of the electric arc from its trajectory. Thus, deviating component of the electric arc is formed mainly by the second part of permanent magnets in the deflecting area 51.

In the embodiment illustrated in figures 1 to 4, the entire second part of permanent magnets, i.e. magnetized section 52, are located outside the first sidewall 12. As described above, this arrangement allows the use of available space to accommodate the channel 31 removing the second sidewall 13 in the deflecting area 51. An asymmetrical arrangement of permanent magnets about the axis a-a' in combination with the placement means the removal of one of the sidewalls provides an optimized arc device with the best dispersion of the electric arc from the point of view of heat transfer and material transfer.

In the embodiment illustrated in figures 1 and 2, the channel 31 of removal passes between at least one exchange the space 24 and the hole 40 and has a cross-section, which is significantly reduced in the direction of gas flow. It provides the acceleration of the gas outlet and the strengthening effect of the cooling gas in a zone close to the contacts. Thus, reducing the time between the moment of separation of the arc from the contacts and the moment it reaches the leading edge deionizers plates.

As you can see in figure 1, the front edge deionizers plates have Central recess 23 and two side portions 71 and 72 facing in the direction of the deflecting section 51 of the camera 11 of the education of the arc. In the deflecting area of the electric arc is directed to the side surface 71. In case of interruption of a strong direct current or alternating current is usually required to enforce the occurrence of arcs in the camera blowout through the Central recess. This provides the electrical deionization of the arc in the Central part of the camera blowout to dissipate the maximum amount of energy. In case of interruption of low current is required to ensure a fast forced the occurrence of an electric arc in the camera blowout, to prevent the conservation and dissipation of energy in the cell formation of the arc, i.e. upstream from the camera blowout. In case of interruption of low current electrical arc can pass through the side portion 71 of the front edge of the camera 21 blowout goods is giving a small amount of dissipated energy.

The sidewalls 12 and 13, forming a chamber education arc, usually made of insulating material. To ensure high switching durability with a weak direct currents with a relatively long off time compared with alternating currents of the sidewalls can be made of wear-resistant insulating material, such as ceramics, for example, alumina or cordierite. To ensure the effective interrupt when a strong constant or variable currents sidewall can be formed from gas-forming insulating material, for example, gas-forming nylon. Preferably, the first sidewall 12 made of a ceramic material, and the second sidewall 13 is made of gas-forming organic material. Gas-forming panel provides increased pressure in the contact zone, thus amplifying the output of the electric arc from the contact zone into the camera blowout.

The present invention also relates to the interrupter device that contains three permanent magnet, and the first and second magnets are located in the first sidewall, respectively, in sections increased induction and deflecting section, and a third magnet located in the second sidewall in the area of high induction.

One of the advantages of the arc is trojstva in accordance with the present invention, it provides the best circulation of the gases generated during the occurrence of the arc. An asymmetrical arrangement of permanent magnets about the axis a-a' in fact means that the electric arc is deflected to the first sidewall 12, which is a large part of permanent magnets. Thus gases generated during the occurrence of the arc, will move in the same direction, i.e. to the first sidewall 12, before entering into the chamber 21 of the arc is extinguished on the same side as the first sidewall. Then the gas will expand into the remaining space of the camera blowout, i.e. essentially in the direction of the opposite side of the camera blowout, i.e. on the same side, which is the second sidewall 13, which is the canal removal. The expansion of the gas will continue in the direction of the interaction of the outlet openings between exchange areas and channel removal, thereby enhancing the flow of gas removal tool. This arrangement prevents the formation of gas tube between the electric arc and diiodotyrosine plates. If the gas tube is too large, it restricts the movement of the electric arc and may even prevent its passing diiodotyrosine plate.

1. Interrupter device (4) for a circuit breaker, comprising:
the camera Gachet the Oia arc (21), formed by the package deionizers plates (22), separated from each other by the exchange space (24)of the chamber (11) education arc contentnow first sidewall (12) and a second sidewall (13), and
cleaner gas to remove the gases generated during the occurrence of the arc containing the channel (31) for deletion, located in the second sidewall and connected to at least one exchange space (24),
characterized in that the damping of the arc contains permanent magnets, and at least part of these magnets are located outside the first sidewall (12), and the fact that the means of removing gases contains a hole (40), formed partially in the second sidewall (13) and opening beyond the arc-quenching devices.

2. Interrupter device according to claim 1, characterized in that the camera of education arc contains:
section (41) increased induction, in which an electrical arc is moving towards the camera blowout under the action of the magnetic field generated by the first part (43, 33) of permanent magnets, and
deflecting section (51), in which the electric arc is deflected relative to the longitudinal axis (10) of the camera of education arc toward the first sidewall (12) under the action of the magnetic field generated by the second part (52) of permanent magnets, and the entire second part of permanent magnets RA is mesena the first sidewall (12).

3. Interrupter device according to claim 2, characterized in that the first part of permanent magnets includes two magnetized area (43, 33), placed behind each of the side walls (12, 13).

4. Interrupter device according to claim 3, characterized in that the two magnetized area (43, 33) of the first part of permanent magnets are arranged symmetrically relative to the longitudinal axis (10) of the camera of education of the arc.

5. Interrupter device according to claim 1, characterized in that the aperture (40) is formed partially in the housing wall.

6. Interrupter device according to claim 1, characterized in that the channel (31) removal passes between at least one exchange space (24) and the opening (40) and has an essentially constant or decreasing cross-section.

7. Interrupter device according to claim 1, characterized in that diiodotyrosine plate (22) contain a front edge, equipped with a Central recess (23).

8. Interrupter device according to claim 1, characterized in that the first sidewall (12) made of a ceramic material.

9. Interrupter device of claim 8, wherein the second sidewall (13) made of a gas-forming organic material.

10. The circuit breaker containing the shared contacts (1, 2) and interrupter device (4) to extinguish the arc formed by the opening mentioned account is tov, characterized in that the interrupter device corresponds to one of claims 1 to 9.



 

Same patents:

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FIELD: electrical engineering.

SUBSTANCE: chamber comprises two isolated LH and RH sets of metal plates separated by air gap. It comprises also first group of RH and LH sets of insulating plates separated by air gap. Note here that metal plates seat in symmetry with the axis passing between LH and RH sets of aforesaid plates, the upper LH and RH plates being interconnected by current conducting bus. In compliance with this invention, second group of LH and RH sets of plates are additionally introduced. Note here that LH and RH sets of insulating plates of first and second group are jointed to LH and RH sets of metal plates to make air gaps aligned and allowing formation of two-way through cooling channels perpendicular to electric arc.

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2 dwg

FIELD: electrical engineering.

SUBSTANCE: invention relates to arc control chamber 1 for automatic circuit breakers fitted onto circuit breaker base to envelope breaker movable contact end trajectory by set of arc suppressor plates 2 and spark plates 3 arranged ledge-like. Arc control chamber 1 consists of two-component box comprising housing 4 with arc suppressor plates 2 and spark plates 3, cover 5 with exhaust channel 6 is tightly attached to box sides. Perimetric cutout 7 is arranged at the beginning of channel 6 on interface of two-component box to receive at least one temporary filler 8 with holes. Said perimetric cutout 7 is made in cover 5 and has damping sides and lateral guide surfaces and at least one thrust ledge 13 for filler 8.

EFFECT: modular-design arc control chamber with no additional connectors and controlled arc suppressing conditions and efficient outburst of plasma on cutting off shot-circuit current.

3 cl, 2 dwg

FIELD: electricity.

SUBSTANCE: arc chute (4) comprises an arc-quenching chamber (21) formed by a package of deionising plates (22), and an arc-generating chamber (11) restricted with the first and the second flanges (12, 13), besides, the arc-quenching chamber comprises permanent magnets, at least partially arranged behind the first flange (12). The arc-generation chamber (11) comprises a higher induction section (31), in which the arc moves towards the arc-quenching chamber by the first part (32, 33) of permanent magnets, and a diverging section (51), in which the arc diverges to the first flange by the second part (52) of the permanent magnets, besides, the magnetic field in the longitudinal average plane developed by the second part, is substantially weaker than the field developed by the first part. An automatic circuit breaker is also disclosed, comprising opened contacts (1, 2) and the arc-quenching chamber described above.

EFFECT: improved reliability of arc quenching and current interruption.

11 cl, 2 dwg

FIELD: electricity.

SUBSTANCE: electric commutation device is intended for attachment to a fixation support and contains at least one electric commutation module (2, 3) and at least one module (1) having an additional electric function, in particular - that of differential protection. At least one of the additional modules (1) is located close to at least one commutation module (2, 3). One or every commutation module (2, 3) contains an arc-extinguishing chamber (7, 8). The arc-extinguishing chamber (7, 8) of the module (2, 3) located opposite the additional module (1) has a surface (11, 12) curved relative to the arc-extinguishing chamber inner part to create a space (E, F) inside the chamber that ensures the possibility of accommodating part of the additional module volume therein (1). The ends (13, 14, 15 and 16) of the arc-extinguishing chamber (7, 8) encompass the additional module (1) volume.

EFFECT: improvement of the device operating characteristics without increase of it overall width.

10 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: switching device body comprises two sides with screw clamps for external load, with current splitters, a mechanism of free splitting and a contact device. A body has a path of an electric arc with two buses of electric arc displacement. Between end sections of buses there is an arc-quenching chamber from a group of arc-quenching plates, to which a chamber adjoins to blow an arc with a hole for arc blowing. Between an arc-quenching chamber and an arc-blowing chamber there are solid guide ribs, and inside the arc-blowing chamber there are solid walls shaped to body sides. A hole for arc blowing is arranged on the plane formed by a plane arranged at the angle α<90° to the setting plane of the body. Guide ribs shaped to one and the other side of the body are arranged as a whole, at least with some of solid walls shaped to the body side. At least some of the walls shaped to one and the other side of the body have sections, which are arranged in parallel to the setting plane of the body, and sections are arranged perpendicularly to the setting plane of the body.

EFFECT: higher reliability of a switching device due to elimination of arc blowing hole closing with dirt and dust particles, as a result of higher intensity of ionised gases cooling without increased dimensions of a body.

8 dwg

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