CN112038165B

CN112038165B - Vacuum switch tube with reinforced structure

Info

Publication number: CN112038165B
Application number: CN202010982037.4A
Authority: CN
Inventors: 孙礼建; 孙平
Original assignee: Anhui Puzhong Electromechanical Co ltd
Current assignee: Anhui Puzhong Electromechanical Co ltd
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2022-11-11
Anticipated expiration: 2040-09-17
Also published as: CN112038165A

Abstract

The invention discloses a vacuum switch tube with a reinforcing structure, and relates to the technical field of vacuum switches. The invention comprises an insulating shell, wherein one end in the insulating shell is fixedly connected with a static conducting rod, and the other end in the shell is fixedly connected with a dynamic conducting rod; the upper end of the insulating shell is connected with an upper cover plate, the lower end of the insulating shell is fixedly connected with a lower cover plate, reinforcing structures are fixedly connected to two ends in the insulating shell, a static contact is fixedly connected to one end of a static conducting rod, a moving contact is fixedly connected to one end of a moving conducting rod, a protective cover used for protecting the insulating shell is fixedly connected to the inner wall of the insulating shell, and a corrugated pipe is fixedly connected to the surface of the moving guide rod. According to the invention, the reinforcing structures for supporting the upper cover plate and the lower cover plate are fixedly connected to the fixing ring, so that the vacuum tube is prevented from being damaged due to the cover plate sinking, and the service life of the vacuum tube is prolonged.

Description

Vacuum switch tube with reinforced structure

Technical Field

The invention belongs to the technical field of vacuum switches, and particularly relates to a vacuum switch tube with a reinforcing structure.

Background

In a power distribution network, a switching device having a control or protection function is an important device which is inevitably used in a circuit and plays a role in closing and opening the circuit. In recent years, vacuum switches have taken an overwhelming position in the application of medium-voltage fields due to the obvious advantages (strong breaking capacity, environmental protection, no explosion hazard, small contact gap, extremely long electric life and the like) presented by the vacuum switches.

At present, a solid-sealed pole column type vacuum switch is more and more widely applied due to excellent performance modularization, pollution resistance and easiness in maintenance. However, a large amount of existing solid-sealed polar pole shell materials are epoxy resins, but the epoxy resin materials are difficult to degrade and cannot be recycled, and the environmental protection problem is increasingly emphasized. To solve this problem, some manufacturers have used thermoplastic plastics to manufacture the embedded pole.

However, the prior art has the following defects when being applied to the solid-sealed polar pole made of thermoplastic plastic materials: the end cover has poor strength and cannot bear the action of tens of times of atmospheric strength applied in the process of manufacturing the pole, and after the plastic solid-sealed pole is manufactured, the end cover of the vacuum switch tube can be obviously sunken under the action of injection molding pressure, so that the function of the vacuum switch tube is lost.

Disclosure of Invention

The invention aims to provide a vacuum switch tube with a reinforcing structure, which solves the problem that the existing thermoplastic cover plate is easy to dent by fixedly connecting the reinforcing structures at two ends of an insulating shell.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a vacuum switch tube with a reinforcing structure, which comprises an insulating shell, wherein the inside of the insulating shell is in a vacuum state, one end of the inside of the insulating shell is fixedly connected with a static conductive rod, and the other end of the inside of the insulating shell is fixedly connected with a movable conductive rod; the upper end of the insulating shell is connected with an upper cover plate, the upper cover plate is connected with the static conducting rod in a sealing mode, the lower end of the insulating shell is fixedly connected with a lower cover plate, reinforcing structures used for supporting the upper cover plate and the lower cover plate are fixedly connected to the two ends in the insulating shell, and the inner wall of the insulating shell is fixedly connected with a fixing ring fixedly connected with the reinforcing structures; the reinforcing structure comprises an annular bottom plate, the bottom plate is fixedly connected with the fixing ring, an annular side plate is fixedly connected onto the bottom plate, a top plate is fixedly connected onto the side plate, and a through hole is formed in the top plate; one end of the static conducting rod is fixedly connected with a static contact, one end of the movable conducting rod is fixedly connected with a movable contact, the inner wall of the insulating shell is fixedly connected with a protective cover for protecting the insulating shell, an upper protective cover is fixedly connected above the protective cover, a lower protective cover is fixedly connected below the protective cover, and the upper protective cover and the lower protective cover are both fixedly connected on a fixed ring; the movable guide rod is fixedly connected with a corrugated pipe on the surface, and the upper end and the lower end of the corrugated pipe are both connected with the guide rod and the lower cover plate in a sealing manner.

Further, the protection casing is the tubular structure, protection casing lateral surface fixedly connected with flange, the protection casing passes through flange fixed connection and is in insulating housing inner wall.

Furthermore, a plurality of springs are fixedly connected between the bottom plate and the top plate.

Furthermore, one end of the insulating shell is fixedly connected with a guide sleeve matched with the movable guide rod.

Further, the outer contour of the reinforcing structure matches the inner contour of the upper and lower cover plates.

The invention has the following beneficial effects:

1. according to the invention, the reinforcing structures for supporting the upper cover plate and the lower cover plate are fixedly connected to the fixing rings, so that the vacuum tube is prevented from being damaged due to the fact that the cover plates are sunken, the springs are fixedly connected between the bottom plate and the top plate, the damping effect is achieved, and the service life of the vacuum tube is prolonged.

2. According to the invention, the insulating shell is protected by the protective cover, the insulating shell is prevented from being damaged by electric arc, and the guide sleeve is fixedly connected in the corrugated pipe, so that the movable guide rod and the static guide rod are more accurately contacted.

Of course, it is not necessary for any product to practice the invention to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

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

FIG. 2 is a schematic view of a reinforcing structure;

in the drawings, the components represented by the respective reference numerals are listed below:

1-insulating shell, 2-static conducting rod, 3-dynamic conducting rod, 4-reinforcing structure, 401-,402-,403-,404-,405-, 5-dynamic contact, 6-static contact, 7-upper protective cover, 8-lower protective cover, 9-upper cover plate, 10-lower cover plate, 11-fixing ring, 12-protective cover, 13-guide sleeve and 14-corrugated pipe.

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.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

Referring to fig. 1-2, the present invention is a vacuum switch tube with a reinforced structure, including an insulating housing 1, the insulating housing 1 is made of ceramic material, the inside of the insulating housing 1 is in a vacuum state, one end inside the insulating housing 1 is fixedly connected with a static conductive rod 2, and the other end inside the housing 1 is fixedly connected with a movable conductive rod 3; 1 upper end of insulating housing is connected with upper cover plate 9, upper cover plate 9 and 2 sealing connection of quiet conducting rod, apron 10 under 1 lower extreme fixedly connected with of insulating housing, all be equipped with the through hole on upper cover plate 9 and the apron 10 down, the equal fixedly connected with in insulating housing 1 both ends is used for supporting upper cover plate 9 and the additional strengthening 4 of apron 10 down, 4 inner wall fixedly connected with of insulating housing and the solid fixed ring 11 of 4 fixed connection of additional strengthening, solid fixed ring 11 is the steel material.

Referring to fig. 2, the reinforcing structure 4 is made of steel, the reinforcing structure 4 includes a bottom plate 401 having a ring structure, the bottom plate 401 may be fixedly connected to the fixing ring 11 through bolts, a ring-shaped side plate 403 is fixedly connected to the bottom plate 401, the side plate 403 supports a side wall of the cover plate, a top plate 402 is fixedly connected to the side plate 403, the top plate 402 supports a top of the cover plate, and a through hole 405 is formed in the top plate 402; one end of the static conducting rod 2 is fixedly connected with a static contact 5, one end of the movable conducting rod 3 is fixedly connected with a movable contact 6, the inner wall of the insulating shell 1 is fixedly connected with a protective cover 12 for protecting the insulating shell 1, the protective cover 12 is arranged to surround the movable conducting contact 6 and the static contact 5, an upper protective cover 7 is fixedly connected above the protective cover 12, a lower protective cover 8 is fixedly connected below the protective cover 12, and the upper protective cover 7 and the lower protective cover 8 are both fixedly connected on a fixing ring 11; the surface of the movable guide rod 3 is fixedly connected with a corrugated pipe 14, and the upper end and the lower end of the corrugated pipe 14 are both connected with the guide rod 3 and the lower cover plate 10 in a sealing manner.

Preferably, the protective cover 12 is of a cylindrical structure, a flange is fixedly connected to the outer side surface of the protective cover 12, and the protective cover 12 is fixedly connected to the inner wall of the insulating housing 1 through the flange.

Preferably, a plurality of springs 404 are fixedly connected between the bottom plate 401 and the top plate 402, and play a role in damping and buffering the cover plate.

Preferably, in order to make the movable contact 6 and the fixed contact 5 contact more accurately, one end of the insulating housing 1 is fixedly connected with a guide sleeve 13 matched with the movable guide rod 3, and the guide sleeve 13 is fixedly connected in the corrugated pipe 14.

Preferably, the outer contour of the reinforcing structure 4 matches the inner contour of the upper and

lower cover plates

9, 10.

One specific application of this embodiment is: according to the invention, the reinforcing structure 4 for supporting the upper cover plate 9 and the lower cover plate 10 is fixedly connected to the fixing ring 7, so that the cover plate is prevented from being sunken to damage the vacuum tube, and the spring 404 is fixedly connected between the bottom plate 401 and the top plate 402 in the reinforcing structure 4, so that a damping effect is achieved, and the service life of the vacuum tube is prolonged; the protective cover 12 protects the insulating shell 1 to prevent electric arc from damaging the insulating shell 1, and the corrugated pipe 14 is internally and fixedly connected with the guide sleeve 13, so that the movable guide rod 3 is more accurately contacted with the static guide rod 2.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above 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 preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a vacuum switch tube with additional strengthening, includes insulating casing (1), its characterized in that: the inside of the insulating shell (1) is in a vacuum state, one end of the inside of the insulating shell (1) is fixedly connected with a static conductive rod (2), and the other end of the inside of the insulating shell (1) is fixedly connected with a movable conductive rod (3);

an upper cover plate (9) is connected to the upper end of the insulating shell (1), the upper cover plate (9) is hermetically connected with the static conducting rod (2), a lower cover plate (10) is fixedly connected to the lower end of the insulating shell (1), reinforcing structures (4) used for supporting the upper cover plate (9) and the lower cover plate (10) are fixedly connected to two ends in the insulating shell (1), and fixing rings (11) fixedly connected with the reinforcing structures (4) are fixedly connected to the inner wall of the insulating shell (1);

the reinforcing structure (4) comprises an annular bottom plate (401), the annular bottom plate (401) is fixedly connected with the fixing ring (11), an annular side plate (403) is fixedly connected to the annular bottom plate (401), a top plate (402) is fixedly connected to the annular side plate (403), and a through hole (405) is formed in the top plate (402);

one end of the static conductive rod (2) is fixedly connected with a static contact (5), one end of the movable conductive rod (3) is fixedly connected with a movable contact (6), the inner wall of the insulating shell (1) is fixedly connected with a first protective cover (12) used for protecting the insulating shell (1), an upper protective cover (7) is fixedly connected above the first protective cover (12), a lower protective cover (8) is fixedly connected below the first protective cover (12), and the upper protective cover (7) and the lower protective cover (8) are both fixedly connected on a fixed ring (11);

the surface of the movable conducting rod (3) is fixedly connected with a corrugated pipe (14), and the upper end and the lower end of the corrugated pipe (14) are hermetically connected with the movable conducting rod (3) and the lower cover plate (10);

the first protective cover (12) is of a cylindrical structure, a flange is fixedly connected to the outer side face of the first protective cover (12), and the first protective cover (12) is fixedly connected to the inner wall of the insulating shell (1) through the flange;

a plurality of springs (404) are fixedly connected between the annular bottom plate (401) and the top plate (402);

one end in the insulating shell (1) is fixedly connected with a guide sleeve (13) matched with the movable conducting rod (3);

the outer contour of the reinforcing structure (4) is matched with the inner contour of the upper cover plate (9) and the lower cover plate (10).