CN112038168A - 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 kind of double arc extinguishing chamber high pressure vacuum switch tube

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

Vacuum switch is the pressure in the automatic measurement and control system. It uses the principle of pressure sensor and built-in high-precision sensor to prevent the pressure in the system from being too high or too low, and outputs the switch signal to ensure accurate and stable operation of the equipment under unattended operation Controller, vacuum switch is a pressure protection automatic controller for 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 movable conductive rod, a static conductive rod, a bellows, and an upper and lower cover plate. When the conductive rod contacts, an arc is generated instantly, and the wall of the bellows is thin, and the bellows is often broken down.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a high-voltage vacuum switch tube with double arc extinguishing chambers. By arranging double arc extinguishing chambers in the insulating shell, the bellows is arranged in the accommodating chamber and isolated from the arc extinguishing chamber, which solves the problem that the existing bellows is easy to be hit. wear problem.

In order to solve the above-mentioned technical problems, the present invention is achieved through the following technical solutions:

The present invention relates to a high-voltage vacuum switch tube with double arc extinguishing chambers, comprising 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, the arc extinguishing chamber is provided with a protection system for protecting the insulating shell; a static conducting rod is fixedly connected to the arc extinguishing chamber, and one end of the two static conducting rods is extended to the outside of the same end of the insulating housing, and an upper end 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 dynamic connecting block for connecting the two static conductive rods. The dynamic connecting block is made of conductor material. 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 the One end of the push rod is extended to the outside of the insulating shell, a lower end cover is fixedly connected between the push rod and the insulating shell, a corrugated pipe is fixedly connected on the surface of the push rod, and the upper and lower parts of the corrugated pipe are fixedly connected. The ends are sealed and connected with the push rod and the lower end cover plate respectively, and the upper end cover plate and the lower end cover plate are both provided with through holes.

Further, the protection system includes an annular shielding cover surrounding the movable contact and the stationary contact, an upper protective cover is fixedly connected above the shielding cover, and a lower protective cover is fixedly connected below the shielding cover.

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

Further, the movable connecting 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 movable 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 arranged in the insulating shell, a protection system is arranged in the arc extinguishing chamber, a static conducting rod is connected in the arc extinguishing chamber, a moving connecting block is connected in the accommodating chamber, and the push rod is pushed through the external driving structure, The moving connecting block connects the two static conductive rods, thereby realizing the conduction of the circuit.

2. The present invention protects the bellows from arc breakdown by arranging the bellows in the accommodating chamber, isolating the accommodating chamber from the arc-extinguishing chamber, and protecting the bellows from arc breakdown and prolonging the vacuum switch tube. The service life is long, and the elastic member makes the connection between the moving conductive rod and the static conductive rod tightly, so that the current flows smoothly.

Of course, it is not necessary for any product embodying the present invention to achieve all of the above-described advantages simultaneously.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

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

In the accompanying drawings, the list of components represented by each number is as follows:

1-Insulation shell, 2-Arc extinguishing chamber, 3-Accommodating chamber, 4-Static conductive rod, 5-Static contact, 6-Moving connecting block, 7-Moving conductive rod, 8-Moving contact, 9- Guide sleeve, 10-elastic part, 11-shield, 12-lower cover, 13-bellows, 14-push rod, 15-upper cover, 16-upper protective cover, 17-lower protective cover.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "upper end", "through hole", "lower", "thickness", "top", "middle", "length", "inner", "inner wall", etc. Indicates the orientation or positional relationship, only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, are constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention .

Referring to FIG. 1, the present invention is a high-voltage vacuum switch tube with dual arc extinguishing chambers, comprising an insulating casing 1, the insulating casing 1 is made of ceramic material, and one end of the insulating casing 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 accommodating chamber 3, the accommodating chamber 3 and the arc extinguishing chamber 2 are independent of each other, and the arc extinguishing chamber 2 and the accommodating chamber 3 are both vacuum Sealed state; the arc extinguishing chamber 2 is provided with a protection system for protecting the insulating shell 1, a static conducting rod 4 is fixedly connected in the arc extinguishing chamber 2, and one end of the two static conducting rods 4 is extended to the outside of the same end of the insulating shell 1, and An upper cover plate 15 is fixedly connected between the static conducting rod 4 and the insulating housing 1 , and the other end of the static conducting rod 4 is provided with a static contact 5 ; The connection block 6, the dynamic connection block 6 is made of copper material, and a pair of movable conductive rods 7 corresponding to the static conductive rods 4 are arranged on the dynamic connection block 6. One end of the movable conductive rods 7 is extended to the inside of the arc extinguishing chamber 2, and the movable conductive rods One end of the conductive rod 7 that extends into the arc extinguishing chamber 2 is provided with a moving contact 8 that is matched and connected with the static contact 5. The static contact 5 and the moving contact 8 are both disc-shaped structures, and the moving connecting block 6 is fixed on the Connect a push rod 14, the push rod 14 is made of insulator material, one end of the push rod 14 is extended to the outside of the insulating housing 1, and the push rod 14 is connected with an external drive mechanism, and the push rod 14 and the insulating housing 1 are fixedly connected with a lower end The cover plate 12 and the push rod 14 are fixedly connected with a bellows 13 on the surface. 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 both provided with through holes.

Preferably, the protection system includes an annular shielding cover 11 surrounding the movable 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 lower protective cover 11 is fixed below the shielding cover 11 . A lower protective cover 17 is connected, and the upper and lower protective covers 11 and 17 respectively protect the upper and lower ends of the insulation problem 1 .

Preferably, the shielding cover 11 , the upper protective cover 16 and the lower protective cover 17 are all 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 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 to the inner wall of the accommodating chamber 3 by an elastic member 10 .

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 movable conductive rod 7 and the arc extinguishing chamber 2 .

A specific application of this embodiment is as follows: the invention is provided with dual arc extinguishing chambers 2 in the insulating housing 1 , the arc extinguishing chamber 2 is connected with a static conductive rod 4 , and the accommodating chamber 3 is connected with a movable conductive rod 7 . The driving structure pushes the push rod 14, so that the movable connecting block 6 connects the two static conductive rods 4, thereby realizing the conduction of the circuit. isolation, thereby protecting the bellows 13 from arcing.

In the description of this specification, description with reference to the terms "one embodiment," "example," "specific example," etc. means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one aspect of the present invention. in one embodiment or example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above-disclosed preferred embodiments of the present invention are provided only to help illustrate the present invention. The preferred embodiments do not exhaust all the details, nor do they limit the invention to only the described embodiments. Obviously, many modifications and variations are possible in light of the content of this specification. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is to be limited only by the claims and their full scope and equivalents.

Claims (6)

1. The utility model provides a two explosion chamber high pressure vacuum switch tubes 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);

move on connecting block (6) fixed connection push rod (14), push rod (14) one end prolong to insulating casing (1) outside, push rod (14) with fixedly connected with lower extreme apron (12) between insulating casing (1), push rod (14) fixed connection bellows (13) on the surface, the upper and lower both ends of bellows (13) respectively with equal sealing connection between push rod (14), lower extreme apron (12), upper end cover plate (15) with all be equipped with the through-hole on lower extreme apron (12).

2. A double arc chute high voltage vacuum switching tube according to claim 1, characterized in that the protection system comprises an annular shield (11) surrounding the moving contact (8) and the stationary contact (5), an upper protection shield (16) is fixedly connected above the shield (11), and a lower protection shield (17) is fixedly connected below the shield (11).

3. A double arc chute high voltage vacuum switching tube according to claim 2, characterized in that the shielding (11), the upper shield (16) and the lower shield (17) are all fixedly connected to the inner wall of the insulating housing (1) by flanges.

4. A double arc chute high voltage vacuum switching tube according to claim 1, 2 or 3, characterized in that the movable connecting block (6) is fixedly connected with an elastic member (10) with the inner wall of the accommodating chamber (3).

5. A double arc chute high voltage vacuum switching tube according to claim 4, characterized in that the elastic element (10) is a spring.

6. A double arc-extinguishing chamber high-voltage vacuum switching tube according to claim 5, characterized in that a guide sleeve (9) is fixedly connected between the moving conducting rod (7) and the arc-extinguishing chamber (2).

Images