CN111276366A

CN111276366A - Breaker arc extinguish chamber with sealing structure

Info

Publication number: CN111276366A
Application number: CN201811475934.5A
Authority: CN
Inventors: 刘唯一; 郭庆忠
Original assignee: Hubei Jucro Electric Co ltd
Current assignee: Hubei Jucro Electric Co ltd
Priority date: 2018-12-04
Filing date: 2018-12-04
Publication date: 2020-06-12

Abstract

The invention provides a breaker arc extinguish chamber with a sealing structure, which belongs to the technical field of arc extinguish chambers and comprises a shell, a movable conducting rod, a movable cover plate, a static conducting rod and a static cover plate, wherein the top and the bottom of the shell are respectively and seamlessly clamped with the static cover plate and the movable cover plate, the static conducting rod and the movable conducting rod are respectively and seamlessly embedded in the static cover plate and the movable cover plate, one ends of the static conducting rod and the movable conducting rod are respectively welded with a static contact and a movable contact, the inner walls of the static cover plate and the movable cover plate are respectively and closely attached with a static end shield cover and a corrugated pipe shield cover, the static conducting rod and the movable conducting rod respectively penetrate through the static end shield cover and the corrugated pipe shield cover, and the inner. The insulating plate can move between the moving contact and the static contact when the moving contact and the static contact are separated, so that the generation of electric arcs between the moving contact and the static contact is reduced, a fluid medium is not needed, the manufacturing difficulty is greatly reduced, and the assembly is convenient.

Description

Breaker arc extinguish chamber with sealing structure

Technical Field

The invention relates to the technical field of arc extinguish chambers, in particular to an arc extinguish chamber of a circuit breaker.

Background

When the high-voltage circuit breaker is in opening, because the contact is in the process of contacting and separating, the gap between the two contacts is from small to large, under the action of high voltage, the insulating medium in the gap can be ionized and punctured to form electric arc, after the electric arc is formed, the generated heat can further intensify the medium ionization and expand the electric arc, so that the circuit breaker can not break the circuit, in order to prevent the process, when the circuit breaker is designed, the two contacts are arranged in an arc extinguishing chamber, a plurality of channels are arranged in the arc extinguishing chamber, firstly, the electric arc is divided, secondly, the electric arc is blown out by utilizing high-voltage airflow generated by the high temperature of the electric arc through a certain channel nozzle of the arc extinguishing chamber, the insulating medium in the current circuit breaker contact is vacuum, oily and also has sulfur hexafluoride gas, namely, the electric arc during opening is reduced to the maximum extent, the circuit is broken in the shortest time, most of the current arc extinguishing chambers eliminate the electric arc through other structures, the arc extinguishing chamber with the good sealing structure has the problems that the medium containing the fluid in the arc extinguishing chamber can reduce the generation of electric arcs, but the fluid medium has fluidity, and the fluid medium can flow out of the arc extinguishing chamber if the sealing structure is poor in effect, and the arc extinguishing chamber with the good sealing structure has the problems of complex manufacturing process, large enterprise investment and the like. Therefore, further research needs to be carried out on the basis of the arc-extinguishing chamber, and the arc-extinguishing chamber of the circuit breaker with the sealed structure is provided.

Disclosure of Invention

The invention aims to solve the problems that a fluid medium is easy to leak and the manufacturing process is complex in a breaker arc extinguish chamber with a sealed structure, and provides the breaker arc extinguish chamber with the sealed structure.

In order to achieve the purpose, the invention provides the following technical scheme: a breaker arc extinguish chamber with a sealing structure comprises a shell, a movable conducting rod, a movable cover plate, a static conducting rod and a static cover plate, wherein the top and the bottom of the shell are respectively and seamlessly clamped with the static cover plate and the movable cover plate, the static conducting rod and the movable conducting rod are respectively and seamlessly embedded in the static cover plate and the movable cover plate, one end of the static conducting rod and one end of the movable conducting rod are respectively welded with a static contact and a movable contact, the inner walls of the static cover plate and the movable cover plate are respectively and closely attached with a static end shield cover and a corrugated pipe shield cover, the static conducting rod and the movable conducting rod respectively penetrate through the static end shield cover and the corrugated pipe shield cover, the inner wall of the movable cover plate is closely attached with a corrugated pipe, the corrugated pipe penetrates through the movable conducting rod and is sleeved with the corrugated pipe shield cover, a rotating shaft and a supporting rod are embedded in the inner wall of the shell, and, one end of the insulating bent rod is bonded with an insulating plate through structural adhesive, the middle of the insulating bent rod is bonded with an elastic wire through the structural adhesive, the other end of the elastic wire is bonded on the inner wall of the shell through the structural adhesive, and the bottom of the moving contact is bonded with an ejector rod through the structural adhesive.

Further preferred embodiments: the insulating bent rod is in a curved surface shape, and the radian of the insulating bent rod is 180 degrees.

Further preferred embodiments: the included angle between the warping rod and the horizontal plane is 62 degrees, the movable angle of the warping rod is 124 degrees, and the top of the warping rod is tightly attached to the support rod.

Further preferred embodiments: the bottom of ejector pin is equipped with the inclined plane, and the inclined plane is 62 with the contained angle of horizontal plane.

Further preferred embodiments: the area of the insulating plate is larger than the contact area of the static conducting rod and the movable conducting rod.

The invention provides a breaker arc extinguish chamber with a sealing structure, which has the following beneficial effects:

(1) the breaker arc extinguish chamber with the sealing structure is provided with the insulating plate, when the moving contact is separated from the static contact, the insulating plate can be moved between the moving contact and the static contact, the generation of electric arcs between the moving contact and the static contact is reduced, and a fluid medium is not needed, so that the leakage of the fluid medium can be thoroughly avoided, the manufacturing difficulty is greatly reduced, and the investment of enterprises is reduced.

In conclusion, the breaker arc extinguish chamber with the sealing structure has wide practicability, and solves the problems that the existing fluid medium is easy to leak and the manufacturing process is complex in the background technology.

Drawings

Fig. 1 is a schematic structural view of the whole of the present invention.

Fig. 2 is a schematic cross-sectional view of the present invention as a whole.

FIG. 3 is an enlarged view of FIG. 2A according to the present invention.

In FIGS. 1-3: the device comprises a shell 1, a static cover plate 2, a static conducting rod 3, a movable cover plate 4, a movable conducting rod 5, a static end shield 6, a static contact 7, a movable contact 8, a corrugated pipe 9, a corrugated pipe shield 10, a rotating shaft 11, an insulating bent rod 12, an elastic wire 13, an insulating plate 14, a warped rod 15, a support rod 16 and a push rod 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly, and the connection may be a direct connection or an indirect connection.

The first embodiment is as follows:

referring to fig. 1 to 3, in the embodiment of the present invention, a breaker arc extinguish chamber with a sealed structure includes a housing 1, a movable conducting rod 5, a movable cover plate 4, a static conducting rod 3 and a static cover plate 2, the top and the bottom of the housing 1 are respectively and seamlessly clamped with the static cover plate 2 and the movable cover plate 4, the static conducting rod 3 and the movable conducting rod 5 are respectively and seamlessly embedded inside the static cover plate 2 and the movable cover plate 4, one end of the static conducting rod 3 and one end of the movable conducting rod 5 are respectively welded with a static contact 7 and a movable contact 8, the inner walls of the static cover plate 2 and the movable cover plate 4 are respectively and closely attached with a static end shield 6 and a bellows shield 10, the static conducting rod 3 and the movable conducting rod 5 respectively penetrate through the static end shield 6 and the bellows shield 10, the inner wall of the movable cover plate 4 is closely attached with a bellows 9, the bellows 9 penetrates through the passive conducting rod 5 and is sleeved with the bellows shield 10, a rotating shaft 11 and a, the left and right sides of pivot 11 bonds through the structure glue respectively has stick up pole 15 and insulating knee 12, and the one end of insulating knee 12 bonds through the structure glue has insulation board 14, and the centre of insulating knee 12 bonds through the structure glue has stretch yarn 13, and the other end of stretch yarn 13 bonds through the structure glue at the inner wall of shell 1, and the bottom of moving contact 8 bonds through the structure glue has ejector pin 17.

Preferably, the insulating bent rod 12 is in a curved surface shape, the radian of the insulating bent rod 12 is 180 degrees, the insulating bent rod 12 can rotate on the rotating shaft 11, the insulating bent rod 12 cannot be contacted with the moving contact 8 in the rotating process, the included angle between the tilting rod 15 and the horizontal plane is 62 degrees, the moving angle of the tilting rod 15 is 124 degrees, the top of the warped rod 15 is tightly attached to the supporting rod 16, the bottom of the ejector rod 17 is provided with an inclined surface, the ejector rod 17 moves downwards along with the moving contact 8, the bottom of the ejector rod 17 is abutted against the top of the warped rod 15, the rotating shaft 11 and the insulating bent rod 12 rotate, the insulating plate 14 rotates to be right above the moving contact 8, the included angle between the inclined surface and the horizontal plane is 62 degrees, when the bottom of the top rod 17 is provided with an inclined surface and has no included angle with the top of the tilted rod 15, the insulating plate 14 is parallel to the top surface of the movable contact 8, and the area of the insulating plate 14 is larger than the contact area of the static conductive rod 3 and the movable conductive rod 5.

The circuit breaker arc extinguish chamber with the sealing structure has the advantages of being simple in structure, convenient to manufacture and the like.

Example two:

when the breaker arc extinguish chamber with the sealing structure is used, firstly, when the moving contact 8 is separated from the static contact 7, the moving contact 8 moves downwards in the shell 1, the ejector rod 17 abuts against the top of the warped rod 15, when the moving contact 8 continuously moves downwards, the warped rod 15, the rotating shaft 11, the insulating bent rod 12 and the insulating plate 14 synchronously rotate anticlockwise, meanwhile, the elastic wire 13 is stretched, the insulating plate 14 moves between the moving contact 8 and the static contact 7, when the inclined surface at the bottom of the ejector rod 17 is kept parallel to the warped rod 15, the insulating plate 14 is parallel to the top surface of the moving contact 8, so that the resistance of an insulating medium between the moving contact 8 and the static contact 7 is increased, the generation of electric arcs between the moving contact 8 and the static contact 7 is reduced, when the moving contact 8 is tightly attached to the static contact 7 upwards, the warped rod 15, the rotating shaft 11, the insulating bent rod 12 and the insulating plate, after the top rod 17 is separated from the tilting rod 15, the elastic thread 103 contracts, so that the tilting rod 15, the rotating shaft 11, the insulating bent rod 12 and the insulating plate 14 continue to rotate, and the tilting rod 15 is tightly attached to the bottom of the supporting rod 16 to finish the resetting work.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several variations and modifications without departing from the concept of the present invention, and these should be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent.

Claims

1. The utility model provides a circuit breaker explosion chamber of seal structure, includes casing (1), moves conducting rod (5), moves apron (4), quiet conducting rod (3) and quiet apron (2), its characterized in that: the top and the bottom of the shell (1) are respectively and seamlessly clamped with a static cover plate (2) and a movable cover plate (4), the insides of the static cover plate (2) and the movable cover plate (4) are respectively and seamlessly embedded with a static conducting rod (3) and a movable conducting rod (5), one end of the static conducting rod (3) and one end of the movable conducting rod (5) are respectively welded with a static contact (7) and a movable contact (8), the inner walls of the static cover plate (2) and the movable cover plate (4) are respectively and closely attached with a static end shield cover (6) and a corrugated pipe shield cover (10), the static conducting rod (3) and the movable conducting rod (5) respectively penetrate through the static end shield cover (6) and the corrugated pipe shield cover (10), the inner wall of the movable cover plate (4) is closely attached with a corrugated pipe (9), the corrugated pipe (9) penetrates through the passive conducting rod (5) and is sleeved with the corrugated pipe shield cover (10), and a rotating shaft (11) and a supporting rod (16) are, the left side and the right side of the rotating shaft (11) are respectively bonded with a warped rod (15) and an insulating bent rod (12) through structural adhesives, one end of the insulating bent rod (12) is bonded with an insulating plate (14) through the structural adhesives, the middle of the insulating bent rod (12) is bonded with an elastic wire (13) through the structural adhesives, the other end of the elastic wire (13) is bonded on the inner wall of the shell (1) through the structural adhesives, the bottom of the movable contact (8) is bonded with a push rod (17) through the structural adhesives, the insulating bent rod (12) is in a curved surface shape, the radian of the insulating bent rod (12) is 180 degrees, the included angle between the warped rod (15) and the horizontal plane is 62 degrees, the movable angle of the warped rod (15) is 124 degrees, the top of the warped rod (15) is tightly attached to the supporting rod (16), the horizontal plane at the bottom of the push rod (17) is provided with an inclined plane, the included angle between the inclined plane and the inclined plane is 62 degrees, and the area of the insulating plate (14) The area of (a).