CN210722863U

CN210722863U - Arc control device based on low-voltage circuit breaker

Info

Publication number: CN210722863U
Application number: CN201921642436.5U
Authority: CN
Inventors: 吕飚
Original assignee: Hubei Mingzeyuan Technology Co ltd
Current assignee: Hubei Mingzeyuan Technology Co ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-06-09
Anticipated expiration: 2029-09-29

Abstract

The utility model discloses an arc control device based on low-voltage circuit breaker, including static contact and moving contact, the top of static contact and moving contact is provided with electric arc, the inboard of static contact and moving contact is provided with the electric arc orbit, the top of electric arc is provided with the explosion chamber, the inner chamber of explosion chamber is provided with arc extinguishing mechanism, arc extinguishing mechanism includes insulating frame, screw thread section of thick bamboo, threaded rod, swing handle, insulation board, draw-in groove, insulating seat and arc extinguishing bars piece, the top fixedly connected with insulating frame of explosion chamber, the center department at insulating frame inner chamber top inlays and is equipped with the screw thread section of thick bamboo. The utility model discloses an insulating frame, a screw thread section of thick bamboo, threaded rod, swing handle, insulation board, draw-in groove, insulator seat and arc extinguishing bars piece's cooperation can rise the unified change of taking out to the arc extinguishing bars piece, has solved traditional arc control device and has not been convenient for the user to carry out the problem of changing to the arc extinguishing bars piece, reduces user's dismantlement intensity.

Description

Arc control device based on low-voltage circuit breaker

Technical Field

The utility model relates to a low-voltage circuit breaker technical field specifically is an arc control device based on low-voltage circuit breaker.

Background

The low-voltage circuit breaker (once called automatic switch) is a switching device which not only can connect and disconnect normal load current and overload current, but also can connect and disconnect short-circuit current, besides its control function, it also has a certain protection function in the circuit, such as overload, short-circuit, under-voltage and leakage protection, etc., and its classification mode is many, and according to the application class, there are selective type (its protection device parameter is adjustable) and non-selective type (its protection device parameter is not adjustable), and according to the arc-extinguishing medium, there are air type and vacuum type (at present, most of domestic products are air type), and its capacity range is very large, minimum is 4A, and maximum can be 5000A, and the low-voltage circuit breaker can be extensively used in all-stage feed-out lines of low-voltage distribution system, power supply control of various mechanical equipment and control and protection of electric terminal.

When the sound contact in the twinkling of an eye of breaking circuit in low voltage circuit breaker, the air in the small clearance between sound contact can be punctured, from this cause electric arc, thereby need install arc control device in low voltage circuit breaker, most arc control devices all use the arc extinguishing bars piece to lengthen electric arc then carry out the arc extinguishing and handle, the person of not being convenient for changes the arc extinguishing bars piece, it dismantles the explosion chamber to need the user, user's use tools is dismantled the change to the arc extinguishing bars piece after that, strengthen user's intensity of labour greatly.

Disclosure of Invention

An object of the utility model is to provide an arc control device based on low voltage circuit breaker possesses the advantage that convenient to use person changes the arc extinguishing bars piece, has solved the problem that traditional arc control device not convenient to use person changed the arc extinguishing bars piece.

In order to achieve the above object, the utility model provides a following technical scheme: the arc extinguishing device comprises a fixed contact and a moving contact, wherein electric arcs are arranged at the tops of the fixed contact and the moving contact, electric arc tracks are arranged on the inner sides of the fixed contact and the moving contact, an arc extinguishing chamber is arranged at the top of each electric arc, and an arc extinguishing mechanism is arranged in an inner cavity of the arc extinguishing chamber.

Preferably, the arc extinguishing mechanism includes insulating frame, screw thread section of thick bamboo, threaded rod, swing handle, insulation board, draw-in groove, insulating seat and arc extinguishing bars piece, the top fixedly connected with insulating frame of explosion chamber, the center department at insulating frame inner chamber top inlays and is equipped with the screw thread section of thick bamboo, the inner chamber threaded connection of screw thread section of thick bamboo has the threaded rod, the top fixedly connected with swing handle of threaded rod, the bottom of threaded rod runs through screw thread section of thick bamboo and horizontal fixedly connected with insulation board, the draw-in groove has been seted up from a left side to the right side in proper order in the bottom of insulation board inner chamber, the inner chamber joint of draw-in groove has insulating seat, the bottom fixedly connected with arc extinguishing bars piece of insulating seat, the bottom.

Preferably, the two sides of the inner cavity of the arc extinguishing chamber are sequentially provided with pressure relief holes from top to bottom, and the pressure relief holes are positioned on the outer side of the arc extinguishing grid plate.

Preferably, the arc extinguishing grid plate is made of steel plates, and the thickness of the arc extinguishing grid plate is 2-2.5 mm.

Preferably, the corresponding side of the arc extinguishing grid pieces keeps a proper distance, and the cross section area of the arc extinguishing grid pieces is the same as that of the inner cavity of the arc extinguishing chamber.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses an insulating frame, a screw thread section of thick bamboo, threaded rod, swing handle, insulation board, draw-in groove, insulator seat and arc extinguishing bars piece's cooperation can rise the unified change of taking out to the arc extinguishing bars piece, has solved traditional arc control device and has not been convenient for the user to carry out the problem of changing to the arc extinguishing bars piece, reduces user's dismantlement intensity.

2. The utility model discloses a pressure release hole, can carry out the pressure release to the very big pressure that electric arc produced in the arc extinguish chamber, prevent to cause destruction to explosion chamber and arc extinguishing bars piece, the material through arc extinguishing bars piece is the steel sheet, thickness through arc extinguishing bars piece is 2-2.5mm, reinforcing arc extinguishing bars piece is to the isolation effect of electric arc, it is the same with the cross-sectional area in arc extinguish chamber inner chamber to keep appropriate interval and its cross-sectional area through one side that arc extinguishing bars piece is corresponding, can evenly separate into a plurality of isolation spaces to the inner chamber of explosion chamber, prevent to appear being interfered by divided electric arc.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a sectional view of the arc extinguish chamber of the utility model;

FIG. 3 is a front view of the arc extinguishing adhesive sheet structure of the present invention;

fig. 4 is a front view of the insulating board structure of the present invention.

In the figure: the arc extinguishing device comprises a fixed contact 1, a movable contact 2, an arc 3, an arc track 4, an arc extinguishing chamber 5, an arc extinguishing mechanism 6, an insulating frame 601, a threaded cylinder 602, a threaded rod 603, a rotating handle 604, an insulating plate 605, a clamping groove 606, an insulating seat 607, an arc extinguishing grid 608 and a pressure relief hole 7.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

Referring to fig. 1-4, an arc extinguishing apparatus based on a low-voltage circuit breaker includes a static contact 1 and a moving contact 2, an arc 3 is disposed on the top of the static contact 1 and the moving contact 2, an arc track 4 is disposed on the inner side of the static contact 1 and the moving contact 2, an arc extinguishing chamber 5 is disposed on the top of the arc 3, pressure relief holes 7 are sequentially disposed on two sides of an inner cavity of the arc extinguishing chamber 5 from top to bottom, the pressure relief holes 7 are located on the outer side of an arc extinguishing grid sheet 608, and can relieve the maximum pressure generated by the arc 3 in the arc extinguishing chamber 5 through the pressure relief holes 7 to prevent damage to the arc extinguishing chamber 5 and the arc extinguishing grid sheet 608, an arc extinguishing mechanism 6 is disposed in the inner cavity of the arc extinguishing chamber 5, the arc extinguishing mechanism 6 includes an insulating frame 601, a threaded cylinder 602, a threaded rod 603, a rotating handle 604, an insulating plate 605, a clamping groove 606, an insulating frame 607, the inner cavity of the threaded cylinder 602 is in threaded connection with a threaded rod 603, the top of the threaded rod 603 is fixedly connected with a rotating handle 604, the bottom of the threaded rod 603 penetrates through the threaded cylinder 602 and is transversely and fixedly connected with an insulating plate 605, the bottom of the inner cavity of the insulating plate 605 is sequentially provided with a clamping groove 606 from left to right, the inner cavity of the clamping groove 606 is clamped with an insulating seat 607, the bottom of the insulating seat 607 is fixedly connected with an arc extinguishing grid sheet 608, the arc extinguishing grid sheet 608 is made of a steel sheet, the thickness of the arc extinguishing grid sheet 608 is 2-2.5mm, the isolation effect of the arc extinguishing grid sheet 608 on an electric arc 3 is enhanced, a proper interval is kept on one side corresponding to the arc extinguishing grid sheet 608, the cross-sectional area of the arc extinguishing grid sheet 608 is the same as that of the inner, can evenly separate into a plurality of isolation spaces to the inner chamber of explosion chamber 5, prevent to appear interfering by divided electric arc 3, the bottom of arc extinguishing bars piece 608 runs through to the bottom of explosion chamber 5 inner chamber, through insulating frame 601, thread cylinder 602, threaded rod 603, swing handle 604, insulation board 605, draw-in groove 606, the cooperation of insulating seat 607 and arc extinguishing bars piece 608, can rise unified the change of taking out to arc extinguishing bars piece 608, the problem that traditional arc control device is not convenient for the user to change the arc extinguishing bars piece has been solved, user's dismantlement intensity is reduced.

When the static contact 1 and the moving contact 2 are used for breaking a circuit, the static contact 1 and the moving contact 2 generate electric arcs 3, so that the electric arcs 3 are elongated by the arc-extinguishing grid pieces 608 to be separated into short electric arc sections, because the magnetic resistance of the arc-extinguishing grid pieces 608 is much smaller than that of air, the short electric arc sections in every two arc-extinguishing grid pieces 608 are elongated, the electric arcs 3 are insulated and refrigerated, so that the arc-extinguishing grid pieces 608 cool and extinguish the electric arcs 3, when the long-term use effect of the arc-extinguishing grid pieces 608 is reduced and needs to be replaced, a user rotates the rotary handle 604 anticlockwise, the rotary handle 604 drives the threaded rod 603 to rotate upwards in the threaded barrel 602, the threaded rod 603 drives the insulating frame 601 to ascend to the bottom of the arc-extinguishing grid pieces 608 to be exposed, then the user separates the arc-extinguishing grid pieces 608 and the insulating base 607 from the clamping groove 606, then inserts a new arc-extinguishing grid piece 608 into the clamping groove 606, and the same, the arc chute 608 performs a downshifting reset.

The standard parts used in the present application document can be purchased from the market, the specific connection mode of each part adopts the conventional means of mature bolt, rivet, clamping and the like in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is not given.

In summary, the following steps: this arc extinguishing device based on low-voltage circuit breaker, through the cooperation of insulating frame 601, thread cylinder 602, threaded rod 603, swing handle 604, insulating board 605, draw-in groove 606, insulating seat 607 and arc extinguishing bars piece 608, can rise unified the taking out change to arc extinguishing bars piece 608, solved traditional arc extinguishing device and be not convenient for the user to carry out the problem of changing to the arc extinguishing bars piece.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an arc control device based on low-voltage circuit breaker, includes static contact (1) and moving contact (2), its characterized in that: the arc extinguishing device is characterized in that electric arcs (3) are arranged at the tops of the static contact (1) and the moving contact (2), arc tracks (4) are arranged on the inner sides of the static contact (1) and the moving contact (2), an arc extinguishing chamber (5) is arranged at the top of each electric arc (3), and an arc extinguishing mechanism (6) is arranged in an inner cavity of each arc extinguishing chamber (5).

2. An arc extinguishing device based on a low-voltage circuit breaker according to claim 1, characterized in that: the arc extinguishing mechanism (6) comprises an insulating frame (601), a threaded cylinder (602), a threaded rod (603), a rotating handle (604), an insulating plate (605), a clamping groove (606), an insulating seat (607) and arc extinguishing grid pieces (608), the top of the arc extinguishing chamber (5) is fixedly connected with the insulating frame (601), the threaded cylinder (602) is embedded in the center of the top of the inner cavity of the insulating frame (601), the threaded rod (603) is connected with the inner cavity of the threaded cylinder (602), the rotating handle (604) is fixedly connected with the top of the threaded rod (603), the bottom of the threaded rod (603) penetrates through the threaded cylinder (602) and is transversely and fixedly connected with the insulating plate (605), the clamping groove (606) is sequentially formed in the bottom of the inner cavity of the insulating plate (605) from left to right, the insulating seat (607) is clamped in the inner cavity of the clamping groove (606), and the grid pieces (608), the bottom of the arc extinguishing grid sheet (608) penetrates through the bottom of the inner cavity of the arc extinguishing chamber (5).

3. An arc extinguishing device based on a low-voltage circuit breaker according to claim 1, characterized in that: pressure release hole (7) have been seted up from last to down in proper order to the both sides of explosion chamber (5) inner chamber, pressure release hole (7) are located the outside of arc extinguishing bars piece (608).

4. An arc extinguishing device based on a low-voltage circuit breaker according to claim 2, characterized in that: the arc extinguishing grid pieces (608) are made of steel sheets, and the thickness of the arc extinguishing grid pieces (608) is 2-2.5 mm.

5. An arc extinguishing device based on a low-voltage circuit breaker according to claim 2, characterized in that: the corresponding side of the arc extinguishing grid pieces (608) keeps a proper distance, and the cross section area of the arc extinguishing grid pieces (608) is the same as that of the inner cavity of the arc extinguishing chamber (5).