CN218482184U - Arc extinguish chamber and circuit breaker - Google Patents
Arc extinguish chamber and circuit breaker Download PDFInfo
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- CN218482184U CN218482184U CN202222344289.1U CN202222344289U CN218482184U CN 218482184 U CN218482184 U CN 218482184U CN 202222344289 U CN202222344289 U CN 202222344289U CN 218482184 U CN218482184 U CN 218482184U
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Abstract
The utility model relates to an electrical equipment's technical field, concretely relates to explosion chamber and circuit breaker. The utility model provides an be provided with insulation system and a plurality of arc extinguishing bars piece in the explosion chamber, be provided with the run-on plate between two adjacent arc extinguishing bars pieces of part. The insulating structure is arranged opposite to the contact system. The insulating structure is provided with a bulge, a first comb tooth groove and an exhaust channel. Two sides of the arc-extinguishing grid sheet are inserted into the corresponding first comb tooth grooves, the middle part of the arc-extinguishing grid sheet corresponds to the exhaust channel, and the arc striking sheet is matched with the bulge. At the same time, the insulating structure can generate gas which is beneficial to arc extinction. When the electric arc entering between the arc extinguishing grid pieces reaches the position of the insulating structure, the insulating structure generates inert gas beneficial to arc extinguishing under the action of the electric arc, and the inert gas cools the electric arc, so that the arc extinguishing effect of the gas is enhanced, and the electric arc is prevented from reigniting; simultaneously, atmospheric pressure in the explosion chamber increases, and exhaust passage can guide electric arc discharge explosion chamber for electric arc can shift fast, thereby promotes the arc extinguishing ability.
Description
Technical Field
The utility model relates to a low-voltage circuit breaker's technical field, concretely relates to explosion chamber and circuit breaker.
Background
The circuit breaker is a switching device capable of closing, carrying, and breaking a current under a normal circuit, and closing, carrying, and breaking a current under an abnormal circuit condition within a prescribed time.
The circuit breaker comprises a moving contact, a static contact, an arc extinguish chamber and other structures; the moving contact and the static contact are connected with a circuit, electric arcs can be generated when the moving contact and the static contact are disconnected, and the generated electric arcs need to be cut by using arc extinguishing grid pieces arranged in the arc extinguishing chamber so as to extinguish the electric arcs. In general, in order to enhance the blowing force to the arc, a gas generating part capable of generating gas under the action of the arc is further arranged, when the arc is generated, the arc burns the gas generating part, the gas generating part generates gas beneficial to arc extinction to cool the arc, meanwhile, the gas pressure in the arc extinguishing chamber can be increased, and the arc is beneficial to move towards the direction of the arc extinguishing grid piece (the direction of the gas outlet) so as to extinguish the arc.
In the prior art, in order to increase the air blowing effect, the air generating pieces are arranged on two sides of the leg of the arc extinguishing grid piece, after electric arc is generated, the air generating pieces are fired, the air generating pieces generate gas beneficial to arc extinguishing, the electric arc is cooled, meanwhile, the gas is generated, the air pressure of the arc extinguishing chamber is increased, and the electric arc is conveniently driven to move towards the tail part (namely the air outlet) of the arc extinguishing grid piece so as to extinguish the electric arc. But the arc is easily reignited at the end of the arc chute (i.e., at the gas outlet).
In view of the problems existing in the prior art, the present invention is directed to an arc extinguish chamber of a low-voltage circuit breaker, which is capable of generating gas to rapidly cool and extinguish arc by providing an insulating member at the rear part of the arc extinguish chamber, thereby preventing arc reignition.
SUMMERY OF THE UTILITY MODEL
The utility model discloses (one) the problem that will solve is: the existing arc is easy to re-ignite at the tail part (air outlet) of the arc-extinguishing grid plate after entering the gap between the arc-extinguishing grid plates.
(II) technical scheme
In order to solve the technical problem, an embodiment of the present invention provides an arc extinguish chamber, which is used for a circuit breaker, wherein the circuit breaker comprises a contact system, an insulating structure and a plurality of arc extinguish grid pieces are arranged in the arc extinguish chamber, and an arc striking piece is arranged between two adjacent arc extinguish grid pieces;
the arc extinguish chamber is provided with a first side and a second side which are arranged oppositely, the first side is close to the contact system, and the insulating structure is positioned on the second side; the insulation structure is provided with a bulge which is arranged corresponding to the arc striking plate, two sides of the insulation structure are provided with first comb tooth grooves, and the first comb tooth grooves on the two sides are arranged in a one-to-one correspondence manner; an exhaust channel is formed between the first comb tooth grooves on the two sides; at least two sides of part of the arc extinguishing grid pieces are inserted into the corresponding first comb tooth grooves, the middle part of the arc extinguishing grid pieces corresponds to the exhaust channel, and the arc striking pieces are matched with the bulges;
the insulating structure is made of a gas generating material; and/or; the insulating structure is provided with a first gas generating piece.
Furthermore, the insulation structure comprises an insulation board, ribs arranged in parallel are arranged on two sides of the insulation board, and the two ribs are provided with the first comb tooth grooves;
the exhaust channel is formed between the two ribs.
Furthermore, a second gas generating member is arranged in the arc extinguishing chamber, the second gas generating member is positioned on the first side, and two sides of any arc extinguishing grid piece are connected with the second gas generating member.
Furthermore, the second gas generating piece comprises a connecting structure and two side plates which are oppositely arranged; two ends of the connecting structure are respectively connected with the two side plates;
a plurality of second comb tooth grooves corresponding to the arc extinguishing grid pieces are formed in the two side plates, and the second comb tooth grooves in the two side plates are arranged in a one-to-one correspondence manner; and two sides of the arc extinguishing grid sheet are respectively connected with the corresponding second comb tooth grooves.
Furthermore, a magnetism increasing block is arranged on at least one side plate.
Furthermore, the two side plates are provided with the magnetism increasing blocks, and the magnetism increasing blocks are connected to the two opposite surfaces of the two side plates.
Furthermore, a counter bore is formed in the side plate, a threaded hole corresponding to the counter bore is formed in the magnetism increasing block, and the magnetism increasing block and the side plate are fixed to the side plate through the cooperation of a countersunk head screw, the counter bore and the threaded hole.
Furthermore, the edge of the magnetism increasing block is flush with the edge of the side plate.
An embodiment of another aspect of the present invention further provides a circuit breaker, including any of the above-mentioned embodiments, the arc extinguishing chamber.
The utility model has the advantages that:
the utility model provides an arc extinguish chamber used for a circuit breaker, wherein the circuit breaker comprises a contact system; an insulating structure and a plurality of arc extinguishing grid pieces are arranged in the arc extinguishing chamber, and an arc striking piece is arranged between two adjacent arc extinguishing grid pieces. The arc extinguish chamber is provided with a first side and a second side which are arranged oppositely, the first side is close to the contact system, and the insulating structure is positioned on the second side; the insulation structure is provided with a bulge which is arranged corresponding to the arc striking plate, the two sides of the insulation structure are provided with first comb tooth grooves, and the first comb tooth grooves on the two sides are arranged in a one-to-one correspondence manner; an exhaust channel is formed between the first comb tooth grooves on the two sides. At least two sides of part of arc extinguishing grid plates are inserted into the corresponding first comb tooth grooves, the middle parts of the arc extinguishing grid plates correspond to the exhaust channels, and the arc striking plates are matched with the protrusions. The insulating structure is made of a gas generating material; and/or; the insulating structure is provided with a first gas generating piece.
Through setting up insulation system in the second side, when entering into the electric arc between the arc extinguishing bars piece and reacing insulation system's position, electric arc firing insulation system, insulation system produce the inert gas that does benefit to the arc extinguishing, and inert gas cools off electric arc, strengthens gaseous arc extinguishing effect, prevents effectively that electric arc from reigniting, and the gas-blowing is effectual. Simultaneously, after gaseous in the explosion chamber, atmospheric pressure in the explosion chamber increases, and exhaust passage can guide electric arc discharge explosion chamber for electric arc can shift fast, thereby promotes the arc extinguishing ability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an arc extinguish chamber provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an insulation structure according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a second gas generating component according to an embodiment of the present invention;
fig. 4 is a schematic view of an internal structure of a magnetism increasing block provided in an embodiment of the present invention;
fig. 5 is a schematic structural diagram of the contact system and the arc extinguish chamber according to an embodiment of the present invention. Icon: 11-arc extinguishing grid pieces; 12-a first side; 13-a second side; 14-a mounting plate; 15-arc striking sheet;
2-an insulating structure; 21-a first comb slot; 22-an exhaust channel; 23-a bump; 24-an insulating plate; 25-ribs;
3-a second gas-producing member; 31-a second comb slot; 32-side plate; 321-counterbores; 33-a linking structure;
4-a magnetism increasing block; 41-a threaded hole;
5-a contact system; 51-moving contact; 52-stationary contact.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 to 5, an embodiment of the present invention provides an arc extinguishing system for eliminating an arc generated during the disconnection of a contact system 5 of a circuit breaker. And an insulating structure 2 and a plurality of arc extinguishing grid pieces 11 are arranged in the arc extinguishing chamber. An arc striking plate 15 is arranged between two partially adjacent arc extinguishing grid plates 11.
In this embodiment, the contact system 5 is used for connecting a power supply and a load, the contact system 5 includes a moving contact 51 and a stationary contact 52, the circuit breaker further includes an operating mechanism, the operating mechanism is connected to the moving contact 51 and controls the moving contact 51 to rotate, and the moving contact 51 and the stationary contact 52 are closed or opened by controlling the moving contact 51 to rotate through the operating mechanism; when the moving contact 51 and the fixed contact 52 are closed, a path is formed between a power supply and a load; when the movable contact 51 is disconnected from the fixed contact 52, the power source is disconnected from the load. When the moving contact 51 is disconnected from the stationary contact 52, an arc is generated between the moving contact 51 and the stationary contact 52, a magnetic blowing force to the arc, which is generated by a loop formed by the stationary contact 52 and the moving contact 51, can blow the arc into the arc chute 11, and the arc chute 11 is used for extinguishing the arc generated when the moving contact 51 is disconnected from the stationary contact 52.
Optionally, in this embodiment, more arc-extinguishing grid plates 11 may be arranged in the effective space of the arc-extinguishing chamber by adjusting the arrangement angle and the arrangement manner of the arc-extinguishing grid plates 11. As shown in fig. 1, three groups of arc chute plates 11 are included.
Correspondingly, a gap is formed between two adjacent arc extinguishing grid pieces 11 with different angles, and in order to prevent the electric arc from escaping from the gap, the arc striking piece 15 is arranged at the gap.
By arranging the arc striking plate 15, the arc striking speed of the electric arc can be accelerated, and the arc extinguishing efficiency is improved. Meanwhile, electric arcs are introduced into the corresponding arc extinguishing grid pieces 11, and the arc extinguishing capacity of the arc extinguishing chamber is improved.
Alternatively, the arc striking plate 15 may be "V" shaped, "L" shaped, or "7" shaped, etc.
In the present embodiment, the projection 23 of the insulating structure 2 is mounted at the tab 15.
As shown in fig. 1, 2 and 5, the arc extinguishing chamber has a first side 12 and a second side 13, which are oppositely arranged, the first side 12 being close to the contact system 5; when the arc extinguishing device is used, the arc generated by the contact system 5 enters between the arc extinguishing grids 11 from the first side 12 under the action of magnetic blow-out force. The insulation structure 2 is positioned on the second side 13, a protrusion 23 corresponding to the arc striking plate 15 is arranged on the insulation structure 2, first comb tooth grooves 21 are arranged on two sides, and the first comb tooth grooves 21 on the two sides are arranged in a one-to-one correspondence manner; an exhaust passage 22 is formed between the first comb teeth grooves 21 on both sides. At least part of two sides of the arc extinguishing grid plate 11 are inserted into the corresponding first comb tooth grooves 21, the middle part of the arc extinguishing grid plate corresponds to the exhaust channel 22, and the arc striking plate 15 is matched with the protrusion 23. The insulating structure 2 is made of a gas generating material; and/or; a first gas generating member is arranged on the insulating structure 2.
In the present embodiment, by providing the insulating structure 2 capable of generating an inert gas on the second side 13; when entering into the electric arc between the arc extinguishing bars piece 11 and reaching insulation system 2's position, electric arc ignition insulation system 2, insulation system 2 produces the inert gas that does benefit to the arc extinguishing, and inert gas cools off electric arc, strengthens gaseous arc extinguishing effect, prevents effectively that electric arc from restriking, and the gas blows effectually. Simultaneously, after gaseous in the explosion chamber, atmospheric pressure in the explosion chamber increases, and exhaust passage 22 can guide electric arc discharge explosion chamber for electric arc can shift fast, thereby promotes the arc extinguishing ability.
Alternatively, there are various ways of generating gas at the insulating structure 2; the insulating structure 2 can be made of gas-generating materials, or the upper part of the insulating structure 2 is made of gas-generating materials; a first gas generating member may be disposed on the insulating structure 2 for generating gas under the burning of the arc; the insulating structure 2 can be made of gas-generating material, and a first gas-generating member is arranged on the insulating structure 2 to generate gas.
In this embodiment, in order to save the internal space of the arc extinguish chamber, the insulating structure 2 is integrally made of a gas generating material.
Preferably, in this embodiment, the gas generating material may be any one of POM (polyoxymethylene), PBT (polybutylene terephthalate), PAMA (anionic polyacrylamide), and PA6 (polyamide 6).
As shown in fig. 1, 2 and 5, the insulating structure 2 includes an insulating plate 24 in a plate-shaped structure, two sides of the insulating plate 24 are provided with ribs 25 arranged in parallel, the two ribs 25 are both provided with the comb teeth grooves, and the first comb teeth grooves 21 are located on the ribs 25 on the two sides. The exhaust channel 22 is located between the two ribs 25.
In the embodiment, the insulating structure 2 can be better fixed on the arc extinguishing grid plate 11 by arranging the ribs 25 on the insulating plate 24, so that the structure is simple and the cost is reduced; at the same time, the exhaust duct 22 is able to guide the arc in the direction of the exhaust aperture on the circuit breaker housing, accelerating the cooling of the arc and avoiding reignition of the arc on the side of the arc chute 11 remote from the contact system 5.
Optionally, in this embodiment, the insulating structure 2 is a long strip, the two long sides are two sides of the insulating structure 2, and the two short sides are two ends of the insulating structure 2.
As shown in fig. 1, 2 and 5, at least one end of the insulating structure 2 is provided with the protrusion 23; and/or; the protrusion 23 is disposed between two ends of the insulating structure 2.
In the present embodiment, the protrusion 23 is configured to correspond to the arc striking plate 15, and the extending direction of the protrusion is the same as the extending direction of the arc striking plate 15, and both the protrusion and the arc striking plate extend in the transverse direction.
Optionally, in this embodiment, the protrusion 23 is disposed on the insulating structure 2, and the protrusion 23 is matched with the arc striking plate 15, so that the stability of the insulating structure 2 in the arc extinguishing chamber can be improved, and the insulating structure 2 is prevented from being separated from the arc extinguishing grid plate 11.
Alternatively, the protrusion 23 may be disposed at one end of the insulating structure 2, the protrusions 23 may be disposed at both ends of the insulating structure 2, the protrusion 23 may be disposed between one end of the insulating structure 2 and both ends of the insulating structure 2, or the protrusions 23 may be disposed at both ends of the insulating structure 2 and between both ends. The specific situation can be set according to the arrangement of the arc extinguishing grid pieces 11.
As shown in fig. 1, 2 and 5, three groups of grid groups are disposed in the arc-extinguishing chamber, each group of grid group includes a plurality of arc-extinguishing grid pieces 11, which are respectively a first grid group, a second grid group and a third grid group from top to bottom for convenience of description. The second grid sheet group is connected with an insulating structure 2, a first comb tooth groove 21 corresponding to the second grid sheet group is formed in the insulating structure 2, and two sides of all arc extinguishing grid sheets 11 of the second grid sheet group are inserted into the first comb tooth groove 21; the middle parts of all the arc-extinguishing grid plates 11 of the second grid group correspond to the exhaust channels 22. The two ends of the insulating structure 2 are provided with protrusions 23, the protrusions 23 at the upper end are used for being matched with the arc striking plates 15 arranged between the first grid plate group and the second grid plate group, and the protrusions 23 at the lower end are used for being matched with the arc striking plates 15 arranged between the second grid plate group and the third grid plate group.
Optionally, an arc striking plate 15 is also disposed in the second grid set, and a protrusion 23 is also disposed between two end portions of the insulating structure 2, and is used for matching with the arc striking plate 15 in the second grid set.
In this embodiment, by providing the insulating structure 2 on the side of the second grid group away from the contact system 5, the arc between the two arc-extinguishing grids 11 can be discharged out of the arc-extinguishing chamber under the action of the exhaust channel 22, which is beneficial to fast extinguishing the arc, and avoids reignition of the arc on the side of the arc-extinguishing grid 11 away from the contact system 5.
Optionally, the insulating plate 24 is an arc-shaped plate to better match the arrangement of the arc-extinguishing grid pieces 11.
The embodiment of the utility model provides a circuit breaker, as shown in fig. 1 to fig. 3, still be provided with second gas production piece 3 in the arc extinguish chamber, second gas production piece 3 sets up in first side 12.
In the present embodiment, the first side 12 is provided with a second gas generating member 3; when the moving contact 51 is disconnected from the static contact 52, the generated electric arc can burn the second gas generating part 3, the second gas generating part 3 generates gas beneficial to arc extinguishing, the electric arc is cooled, meanwhile, the second gas generating part 3 generates gas, so that the air pressure in the arc extinguishing chamber is increased, and the electric arc is favorably driven to move towards the extending direction (the direction of the exhaust hole) of the arc extinguishing grid plate 11, so that the electric arc is extinguished.
In this embodiment, the circuit breaker includes a housing, and the housing is provided with an exhaust hole for communicating the outside with the arc extinguish chamber, which is known in the prior art and will not be described herein.
In the circuit breaker provided by the embodiment, when the movable contact 51 is disconnected from the fixed contact 52, an arc is generated, the arc moves towards the direction of the second side 13 under the action of magnetic blowing force to the arc generated by a loop formed by the movable contact 51 and the fixed contact 52, and after the arc moves to the second gas generating part 3, the second gas generating part 3 generates gas for cooling the arc and introducing the arc into the arc extinguishing grid piece 11; the arc moves to the second side 13 along the gap between two adjacent arc-extinguishing grids 11 in the arc-extinguishing grids 11 continuously, and when the arc contacts the insulating structure 2, the insulating structure 2 generates gas under the action of the arc to cool the arc, so that the arc is prevented from reigniting at the tail of the arc-extinguishing grids 11.
During the use, produce gas piece 3 with the second and follow the direction of being adorned into the arc extinguish chamber by the directional second side 13 of first side 12 in, and peg graft with arc extinguishing grid piece 11, the both sides majority of arc extinguishing grid piece 11 is located the comb tooth's socket of gas piece 3 is produced to the second, all the other parts are located the comb tooth's socket on insulation system 2, thus, gas piece 3 and the cooperation of insulation system 2 are produced to the second, can produce more gas that do benefit to the arc extinguishing, atmospheric pressure in the increase arc extinguish chamber that simultaneously can be very fast, make electric arc extinguish fast.
As shown in fig. 1, 3 and 5, the second gas generating member 3 comprises a connecting structure 33 and two oppositely arranged side plates 32; two ends of the connecting structure 33 are respectively connected with the two side plates 32. The two side plates 32 are respectively provided with a plurality of second comb tooth grooves 31 corresponding to the arc extinguishing grid pieces 11, and the second comb tooth grooves 31 on the two side plates 32 are arranged in a one-to-one correspondence manner.
In this embodiment, one side of all the arc-extinguishing grid plates 11 close to the touch system is inserted into the second gas-generating component 3, and the second comb tooth grooves 31 on the two side plates 32 are symmetrical, so that the arc-extinguishing grid plates 11 can be inserted into the two second comb tooth grooves 31 correspondingly arranged.
During the use, produce gas piece 3 with the second and insert on arc extinguishing bars piece 11 along the direction by the directional second side 13 of first side 12, produce gas piece 3 and insulation system 2 cooperation through the second, can produce more inert gas that do benefit to the arc extinguishing to cool off electric arc, strengthen gaseous arc extinguishing effect, prevent effectively that electric arc from reigniting, the gas blows effectually.
As shown in fig. 1, 3 and 4, the side plate 32 of the second gas generating component 3 is further provided with a magnetizing block 4.
In this embodiment, the two side plates 32 are connected to the connecting structure 33, a moving area of one end of the moving contact 51 provided with a contact is arranged between the two side plates 32, and the magnetizing block 4 is arranged on the side plates 32, so that a self-excited magnetic field can be increased, it is ensured that an arc can rapidly enter the arc-extinguishing grid 11, the breaking time of the circuit breaker is reduced, the burning of the arc to the moving contact 51 is also reduced, and the current-limiting capacity is improved.
Optionally, the magnetic increasing block 4 may be disposed on one of the side plates 32, or the magnetic increasing blocks 4 may be disposed on both of the side plates 32.
In this embodiment, in order to enable the arc to enter the arc chute 11 quickly, the two side plates 32 are both provided with the magnetism increasing blocks 4, and the magnetism increasing blocks 4 are located on two opposite surfaces of the two side plates 32, that is, one magnetism increasing block 4 is provided on each side plate 32 close to the moving area of the moving contact 51 of each side plate 32.
In this embodiment, the magnetizing blocks 4 are disposed on the two side plates 32 to increase the self-excitation magnetic field, so as to ensure that the arc can enter the arc chute 11 quickly, reduce the breaking time of the circuit breaker, reduce the burning of the arc to the moving contact 51, and improve the current limiting capability.
As shown in fig. 1, 3 and 4, a counterbore 321 is arranged on the side plate 32, and a threaded hole 41 corresponding to the counterbore 321 is arranged on the magnetism increasing block 4; during installation, the magnetism increasing block 4 is attached to the side plate 32, the threaded hole 41 is coaxial with the corresponding counter bore 321, the screw hole 41 is connected with the threaded hole 41 through a deep hole by a counter screw, and the magnetism increasing block 4 is fixed on the side plate 32.
In this embodiment, the magnetism increasing block 4 is fixed by the matching of the counter bore 321 and the counter head screw, so that the end of the screw can be prevented from occupying the space in the arc extinguishing chamber.
Optionally, in this embodiment, the shape of the edge of the magnetism increasing block 4 is the same as the shape of the edge of the side plate 32, so as to increase the self-excitation magnetic field to the maximum extent while not occupying the space of other parts of the arc extinguish chamber.
Optionally, in this embodiment, the two sides of the arc-extinguishing grid 11 are further provided with mounting plates 14 for mounting the arc-extinguishing grid 11, the mounting plates 14 are made of insulating materials, the two sides of all the arc-extinguishing grid 11 are fixed on the mounting plates 14, and the mounting plates 14 are located outside the two side plates 32.
The utility model discloses another embodiment still provides a circuit breaker, including above-mentioned arbitrary embodiment explosion chamber.
The circuit breaker includes all the advantages of the arc chute and will not be described in detail here.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the communication may be direct, indirect via an intermediate medium, or internal to both elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. An arc extinguish chamber is used for a circuit breaker, the circuit breaker comprises a contact system (5), and the arc extinguish chamber is characterized in that an insulating structure (2) and a plurality of arc extinguish grid pieces (11) are arranged in the arc extinguish chamber, and an arc striking piece (15) is arranged between two adjacent arc extinguish grid pieces (11);
the arc extinguishing chamber has a first side (12) and a second side (13) which are oppositely arranged, the first side (12) is close to the contact system (5), and the insulating structure (2) is positioned on the second side (13); the insulation structure (2) is provided with a bulge (23) corresponding to the arc striking sheet (15), two sides of the insulation structure are provided with first comb tooth grooves (21), and the first comb tooth grooves (21) on the two sides are arranged in a one-to-one correspondence manner; an exhaust channel (22) is formed between the first comb tooth grooves (21) on the two sides; at least two sides of part of the arc extinguishing grid plates (11) are inserted into the corresponding first comb tooth grooves (21), the middle part of the arc extinguishing grid plates corresponds to the exhaust channel (22), and the arc striking plates (15) are matched with the protrusions (23);
the insulating structure (2) is made of a gas generating material; and/or; the insulation structure (2) is provided with a first gas generating piece.
2. The arc extinguishing chamber according to claim 1, characterized in that the insulating structure (2) comprises an insulating plate (24), wherein two sides of the insulating plate (24) are provided with parallel ribs (25), and the first comb grooves (21) are arranged on both of the ribs (25);
the exhaust channel (22) is formed between the two ribs (25).
3. Arc chute according to claim 1, characterized in that at least one end of said insulating structure (2) is provided with said projection (23); and/or; the bulges (23) are arranged between the two ends of the insulation structure (2).
4. Arc extinguishing chamber according to claim 1, characterized in that a second gas generating element (3) is arranged in the arc extinguishing chamber, the second gas generating element (3) is located on the first side (12), and both sides of any one of the arc chute plates (11) are connected with the second gas generating element (3).
5. The arc chute according to claim 4, characterized in that the second gas generating member (3) comprises a connecting structure (33) and two oppositely arranged side plates (32); two ends of the connecting structure (33) are respectively connected with the two side plates (32);
a plurality of second comb tooth grooves (31) corresponding to the arc extinguishing grid pieces (11) are formed in the two side plates (32), and the second comb tooth grooves (31) in the two side plates (32) are arranged in a one-to-one correspondence manner; and two sides of the arc extinguishing grid plate (11) are respectively connected with the corresponding second comb tooth grooves (31).
6. Arc extinguishing chamber according to claim 5, characterized in that at least one of said side plates (32) is provided with a magnetizing block (4).
7. The arc extinguish chamber according to claim 6, characterized in that the magnetism increasing blocks (4) are arranged on two side plates (32), and the magnetism increasing blocks (4) are connected to two opposite surfaces of the two side plates (32).
8. The arc extinguish chamber according to claim 7, wherein a counter bore (321) is formed in the side plate (32), a threaded hole (41) corresponding to the counter bore (321) is formed in the magnet increasing block (4), and the magnet increasing block (4) and the side plate (32) are fixed on the side plate (32) through a countersunk head screw, the counter bore (321) and the threaded hole (41) in a matched mode.
9. Arc extinguishing chamber according to claim 7, characterized in that the edges of the magnetizing blocks (4) are flush with the edges of the side plates (32).
10. A circuit breaker characterized by comprising an arc chute according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222344289.1U CN218482184U (en) | 2022-09-02 | 2022-09-02 | Arc extinguish chamber and circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222344289.1U CN218482184U (en) | 2022-09-02 | 2022-09-02 | Arc extinguish chamber and circuit breaker |
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| Publication Number | Publication Date |
|---|---|
| CN218482184U true CN218482184U (en) | 2023-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222344289.1U Active CN218482184U (en) | 2022-09-02 | 2022-09-02 | Arc extinguish chamber and circuit breaker |
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| CN (1) | CN218482184U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116072485A (en) * | 2023-03-30 | 2023-05-05 | 河北宝凯电气股份有限公司 | Arc extinguishing system and circuit breaker comprising same |
-
2022
- 2022-09-02 CN CN202222344289.1U patent/CN218482184U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116072485A (en) * | 2023-03-30 | 2023-05-05 | 河北宝凯电气股份有限公司 | Arc extinguishing system and circuit breaker comprising same |
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