CN112038168B - High-voltage vacuum switch tube with double arc-extinguishing chambers - Google Patents

Abstract

The invention discloses a high-voltage vacuum switch tube with double arc extinguishing chambers, and relates to the technical field of high-voltage arc extinguishing. The invention includes an insulating shell, one end of the insulating shell is provided with two arc extinguishing chambers side by side, the other end of the insulating shell is provided with a accommodating chamber, the arc extinguishing chamber is fixedly connected with a static conducting rod, and one end of the two static conducting rods is extended to the insulating shell Outside the same end of the body, the other end of the static conductive rod is provided with a static contact; the accommodating chamber is provided with a dynamic connecting block for connecting two static conductive rods, and a pair of dynamic connecting blocks corresponding to the static conductive rods are arranged on the dynamic connecting block. Conductive rod, one end of the movable conductive rod is extended to the inside of the arc extinguishing chamber, and one end of the movable conductive rod is provided with a movable contact which is matched and connected with the static contact; a push rod is fixedly connected to the movable connection block, and a push rod is fixedly connected on the surface of the push rod Bellows. In the present invention, the bellows is arranged in the accommodating chamber, and the accommodating chamber is isolated from the arc extinguishing chamber, thereby protecting the bellows from being broken down by electric arcs.

Description

A high-voltage vacuum switch tube with double arc extinguishing chamber

technical field

The invention belongs to the technical field of high-voltage arc extinguishing, in particular to a high-voltage vacuum switch tube with double arc extinguishing chambers.

Background technique

The vacuum switch is the pressure in the automatic measurement and control system. Using the principle of the pressure sensor, it is designed with a built-in high-precision sensor to prevent the pressure in the system from being too high or too low, and output a switch signal to ensure that the equipment operates accurately and stably without supervision. The controller, the vacuum switch is a pressure protection automatic controller used in the vacuum system. When the vacuum pressure in the system is greater than the set point, the controller will automatically cut off the circuit and send a signal to ensure the normal operation of the system.

The existing vacuum switch tube is mainly composed of a vacuum insulating shell, a moving conductive rod, a static conductive rod, a bellows, and upper and lower cover plates. The electric arc is generated instantly when the conductive rod contacts, and the wall of the corrugated pipe is thin, so the phenomenon that the corrugated pipe is often broken down.

Contents of the invention

The object of the present invention is to provide a high-voltage vacuum switch tube with double arc extinguishing chambers. By providing double arc extinguishing chambers in the insulating housing and the bellows are installed in the accommodation chamber to isolate them from the arc extinguishing chambers, it solves the problem that the existing bellows are easy to be struck. The question of what to wear.

In order to solve the problems of the technologies described above, the present invention is achieved through the following technical solutions:

The invention relates to a high-voltage vacuum switch tube with double arc extinguishing chambers, which includes an insulating shell, one end of the insulating shell is provided with two arc extinguishing chambers side by side, and the other end of the insulating shell is provided with an accommodating chamber. Both the arc chamber and the accommodating chamber are in a vacuum-sealed state, and the arc extinguishing chamber is provided with a protection system for protecting the insulating shell; the arc extinguishing chamber is fixedly connected with a static conductive rod, and one end of the two static conductive rods is extended to the outside of the same end of the insulating housing, and an upper cover plate is fixedly connected between the static conducting rod and the insulating housing, and the other end of the static conducting rod is provided with a static contact; There is a moving connecting block for connecting two static conducting rods, the moving connecting block is a conductor material, and a pair of moving connecting rods corresponding to the static conducting rods are arranged on the moving connecting block. One end of the moving conductive rod is extended to the interior of the arc extinguishing chamber, and one end of the moving conductive rod is provided with a moving contact that cooperates with the static contact; a push rod is fixedly connected to the moving connecting block, and the One end of the push rod is extended to the outside of the insulating shell, a lower cover plate is fixedly connected between the push rod and the insulating shell, a bellows is fixedly connected to the surface of the push rod, and the upper and lower ends of the bellows The ends are respectively sealed and connected with the push rod and the lower end cover, and both the upper end cover and the lower end cover are provided with through holes.

Further, the protection system includes an annular shield surrounding the moving contact and the static contact, an upper shield is fixedly connected above the shield, and a lower shield is fixedly connected below the shield.

Further, the shielding cover, the upper protective cover and the lower protective cover are fixedly connected to the inner wall of the insulating housing through flanges.

Further, the dynamic connection block is fixedly connected with an elastic member to the inner wall of the accommodating chamber.

Further, the elastic member is a spring.

Further, a guide sleeve is fixedly connected between the moving conductive rod and the arc extinguishing chamber.

The present invention has the following beneficial effects:

1. In the present invention, double arc extinguishing chambers are provided in the insulating housing, a protection system is provided in the arc extinguishing chamber, a static conductive rod is connected to the arc extinguishing chamber, a dynamic connection block is connected to the accommodation chamber, and the push rod is pushed by an external driving structure. The moving connection block connects the two static conduction rods, thereby realizing the conduction of the circuit.

2. The present invention protects the bellows from being broken down by the arc by setting the bellows in the accommodating chamber, isolating the accommodating chamber and the arc extinguishing chamber, and protects the bellows from being broken down by the arc, thus prolonging the length of the vacuum switch tube. The service life is long, and the elastic member makes the connection between the dynamic conductive rod and the static conductive rod tight, so that the current flows smoothly.

Of course, any product implementing the present invention does not necessarily need to achieve all the above-mentioned advantages at the same time.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that are required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

Fig. 1 is a structural representation of the present invention;

In the accompanying drawings, the list of parts represented by each label is as follows:

1-Insulation shell, 2-Interrupter chamber, 3-Accommodating chamber, 4-Static conducting rod, 5-Static contact, 6-Moving connection block, 7-Moving conducting rod, 8-Moving contact, 9- Guide sleeve, 10-elastic part, 11-shielding cover, 12-lower end cover plate, 13-bellows, 14-push rod, 15-upper end cover plate, 16-upper protective cover, 17-lower protective cover.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

In describing the present invention, it should be understood that the terms "upper end", "through hole", "bottom", "thickness", "top", "middle", "length", "inner", "inner wall" etc. Indicating orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as limiting the present invention .

Please refer to Fig. 1, the present invention is a high-voltage vacuum switching tube with double arc extinguishing chambers, which includes an insulating housing 1 made of ceramic material, and one end of the insulating housing 1 is provided with two arc extinguishing chambers 2 side by side. The two arc extinguishing chambers 2 are independent of each other, and the other end of the insulating shell 1 is provided with an accommodation chamber 3, the accommodation chamber 3 and the arc extinguishing chamber 2 are independent of each other, and both the arc extinguishing chamber 2 and the accommodation chamber 3 are vacuum In a sealed state; the arc extinguishing chamber 2 is provided with a protection system for protecting the insulating shell 1, and a static conductive rod 4 is fixedly connected to the arc extinguishing chamber 2, and one end of the two static conductive rods 4 is extended to the outside of the same end of the insulating shell 1, and The upper end cover plate 15 is fixedly connected between the static conductive rod 4 and the insulating shell 1, and the other end of the static conductive rod 4 is provided with a static contact 5; The connecting block 6, the moving connecting block 6 is made of copper material, the moving connecting block 6 is provided with a pair of moving conducting rods 7 corresponding to the static conducting rods 4 one by one, one end of the moving conducting rods 7 extends to the inside of the arc extinguishing chamber 2, and the moving connecting rods 7 One end of the conductive rod 7 extending into the arc extinguishing chamber 2 is provided with a movable contact 8 that is connected with the static contact 5. The static contact 5 and the movable contact 8 are both disc-shaped structures, and the movable connection block 6 is fixed Connect a push rod 14, the push rod 14 is an insulator material, one end of the push rod 14 is extended to the outside of the insulating shell 1, and the push rod 14 is connected to the external driving mechanism, and the lower end is fixedly connected between the push rod 14 and the insulating shell 1 The cover plate 12 and the surface of the push rod 14 are fixedly connected with bellows 13, and the bellows 13 is sealed with the push rod 14 and the lower end cover plate 12. The upper end cover plate 15 and the lower end cover plate 12 are all provided with through holes.

Preferably, the protection system includes an annular shielding cover 11 surrounding the moving contact 8 and the static contact 5 to protect the inner wall of the insulating housing 1. An upper protective cover 16 is fixedly connected above the shielding cover 11, and a fixed shielding cover 11 is fixed below the shielding cover 11. A lower protective cover 17 is connected, and the upper protective cover 11 and the lower protective cover 17 respectively protect the upper and lower ends of the insulation subject 1 .

Preferably, the shielding cover 11 , the upper protective cover 16 and the lower protective cover 17 are fixedly connected to the inner wall of the insulating housing 1 through flanges, and the upper protective cover 16 and the lower protective cover 17 are all provided with through holes.

Preferably, in order to make the connection between the static contact 5 and the movable contact 8 tight, the movable connection block 6 is fixedly connected with an elastic member 10 to the inner wall of the accommodating chamber 3 .

Preferably, the elastic member 10 is a spring, and the spring is in a stretched state.

Preferably, a guide sleeve 9 is fixedly connected between the moving conductive rod 7 and the arc extinguishing chamber 2 .

A specific application of this embodiment is as follows: the invention provides double arc extinguishing chambers 2 in the insulating housing 1, the static conducting rods 4 are connected in the arc extinguishing chambers 2, and the moving conducting rods 7 are connected in the accommodating chamber 3. The driving structure pushes the push rod 14, so that the moving connection block 6 connects the two static conductive rods 4, thereby realizing the conduction of the circuit. The bellows 13 is arranged in the accommodation chamber 3, and the accommodation chamber 3 and the arc extinguishing chamber Insulation, thereby protecting the bellows 13 from being broken down by the arc.

In the description of this specification, descriptions with reference to the terms "one embodiment", "example", "specific example" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment of the present invention. In an embodiment or example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are only to help illustrate the invention. The preferred embodiments are not exhaustive in all detail, nor are the inventions limited to specific embodiments described. Obviously, many modifications and variations can be made based on the contents of this specification. This description selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the art can well understand and utilize the present invention. The invention is to be limited only by the claims, along with their full scope and equivalents.

Claims (1)

1. The utility model provides a two explosion chamber high pressure vacuum switch tube which characterized in that: the vacuum insulation device comprises an insulation shell (1), wherein two arc extinguish chambers (2) are arranged at one end of the insulation shell (1) side by side, an accommodating chamber (3) is arranged at the other end of the insulation shell (1), the arc extinguish chambers (2) and the accommodating chamber (3) are in a vacuum sealing state, and a protection system for protecting the insulation shell (1) is arranged in the arc extinguish chambers (2);

a static conductive rod (4) is fixedly connected in the arc extinguish chamber (2), one end of each of the two static conductive rods (4) extends to the outside of the same end of the insulating shell (1), an upper end cover plate (15) is fixedly connected between each of the two static conductive rods (4) and the insulating shell (1), and a static contact (5) is arranged at the other end of each of the two static conductive rods (4);

a movable connecting block (6) for connecting the two static conductive rods (4) is arranged in the accommodating chamber (3), the movable connecting block (6) is made of conductor materials, a pair of movable conductive rods (7) which correspond to the static conductive rods (4) one by one are arranged on the movable connecting block (6), one end of each movable conductive rod (7) is extended into the arc extinguish chamber (2), and a movable contact (8) which is in matched connection with the static contact (5) is arranged at one end of each movable conductive rod (7);

a push rod (14) is fixedly connected to the movable connecting block (6), one end of the push rod (14) extends to the outside of the insulating shell (1), a lower end cover plate (12) is fixedly connected between the push rod (14) and the insulating shell (1), a corrugated pipe (13) is fixedly connected to the surface of the push rod (14), the upper end and the lower end of the corrugated pipe (13) are respectively in sealing connection with the push rod (14) and the lower end cover plate (12), and through holes are formed in the upper end cover plate (15) and the lower end cover plate (12);

the protection system comprises an annular shielding cover (11) surrounding the moving contact (8) and the static contact (5), an upper protection cover (16) is fixedly connected above the shielding cover (11), and a lower protection cover (17) is fixedly connected below the shielding cover (11);

the shielding cover (11), the upper protective cover (16) and the lower protective cover (17) are fixedly connected to the inner wall of the insulating shell (1) through flanges;

the movable connecting block (6) is fixedly connected with the inner wall of the accommodating chamber (3) by an elastic piece (10);

the elastic piece (10) is a spring;

and a guide sleeve (9) is fixedly connected between the movable conducting rod (7) and the arc extinguish chamber (2).

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