CN219457446U - Protective vacuum arc-extinguishing chamber - Google Patents

Abstract

The utility model relates to a protective vacuum arc-extinguishing chamber which is characterized by comprising a shell, wherein a movable conducting rod and a static conducting rod are arranged at two ends of the shell, a static cover plate is arranged between the static conducting rod and the shell, the movable conducting rod is connected with a movable contact, the static conducting rod is connected with a static contact, a corrugated pipe is sleeved on the movable conducting rod, a protective cover is arranged at the end part of the corrugated pipe, which is close to the movable contact, a limiting part is formed on the movable conducting rod, the limiting part abuts against the end part of the protective cover, and the protective cover is arranged close to the shielding cover. According to the utility model, the protective cover is arranged at the end part of the corrugated pipe to protect the corrugated pipe, and the corrugated pipe can touch the shielding cover when moving, so that the arranged position is close to the shielding cover, and meanwhile, the limit part is formed on the movable conducting rod to limit and mount the protective cover.

Description

Protective vacuum arc-extinguishing chamber

Technical Field

The utility model belongs to the technical field of vacuum arc-extinguishing chambers, and particularly relates to a protective vacuum arc-extinguishing chamber.

Background

The vacuum arc-extinguishing chamber, also called vacuum switch tube, is a core component of the medium-high voltage power switch, and has the main functions of rapidly extinguishing arc and inhibiting current after the medium-high voltage power supply is cut off through the excellent insulativity of vacuum in the tube, so as to avoid accidents and accidents. As an environment-friendly and green power product, a vacuum circuit breaker is increasingly widely used in a power grid, and a vacuum interrupter is a core element of the vacuum circuit breaker.

The vacuum interrupter includes the shell, sets up movable conductive rod and the movable contact in the shell, and movable conductive rod and movable contact are connected and are removed to static contact one side, realize breaking, need carry out dynamic seal to it when movable conductive rod removes simultaneously, generally adopt the mode that sets up the bellows on movable conductive rod to realize the dynamic seal to the vacuum interrupter, but lack the protection to the bellows.

Disclosure of Invention

The utility model aims to provide a protective vacuum arc-extinguishing chamber so as to solve the problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a protection type vacuum interrupter, its characterized in that, includes the shell, the both ends of shell are provided with movable conductive rod, quiet conductive rod with be provided with quiet apron between the shell, movable conductive rod is connected with the moving contact, quiet conductive rod is connected with the static contact, the cover is equipped with the bellows on the movable conductive rod, the bellows is close to the tip of moving contact is provided with the safety cover, be formed with spacing portion on the movable conductive rod, spacing portion with the tip of safety cover offsets, be close to the setting between safety cover and the shield.

The utility model further provides that the movable contact and the fixed contact are internally provided with the magnetic focusing ring.

The utility model further provides that the static contact is connected with the static conductive rod through a connecting bolt, and the moving contact is connected with the moving conductive rod through a connecting bolt.

The utility model further provides that at least one equalizing cover is arranged on one side of the static conductive rod, which is close to the static cover plate.

The corrugated pipe is further provided with a movable cover plate arranged between the movable conducting rod and the shell, and a sealing ring is arranged below the movable cover plate and extends to the corrugated pipe.

The utility model further provides that the shell comprises an upper shell and a lower shell, a gap is formed between the upper shell and the lower shell, a middle seal ring connecting part is arranged in the gap, and the middle seal ring is fixed on the shell through the middle seal ring connecting part and is positioned outside the shielding cover.

The utility model has the beneficial effects that: according to the utility model, the protective cover is arranged at the end part of the corrugated pipe to protect the corrugated pipe, and the corrugated pipe can touch the shielding cover when moving, so that the arranged position is close to the shielding cover, and meanwhile, the limit part is formed on the movable conducting rod to limit and mount the protective cover. Meanwhile, the static conductive rod is provided with the pressure equalizing cover to meet the requirement of uniform distribution of electric fields in the pipe, and the maximum electric field strength can be reduced, so that the pressure-resistant requirement can be improved. The middle sealing ring is also arranged for sealing, so that the sealing performance and the protection performance are further improved.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present utility model.

Fig. 2 is a cross-sectional view of an embodiment of the present utility model.

Reference numerals;

10. a housing; 10a, an upper shell; 10b, a lower housing; 101. a gap; 102. a middle seal ring connecting part; 103. a middle seal ring; 20. a movable conductive rod; 30. a static conductive rod; 40. a static cover plate; 50. a moving contact; 60. a stationary contact; 70. a bellows; 80. a protective cover; 90. a limit part; 100. a magnetic ring; 110. a connecting bolt; 120. a pressure equalizing cover; 130. a movable cover plate; 140. a sealing ring; 150. a shield;

Detailed Description

The following will describe the embodiments of the present application in detail by way of examples, and therefore, how the present application applies technical means to solve the technical problems and achieve the implementation process of the technical effects can be fully understood and implemented accordingly.

As shown in fig. 1-2, the utility model relates to a protective vacuum arc extinguishing chamber, which comprises a housing 10, wherein movable conducting rods 20 and static conducting rods 30 are arranged at two ends of the housing 10, a static cover plate 40 is arranged between the static conducting rods 30 and the housing 10, the movable conducting rods 20 are connected with movable contacts 50, the static conducting rods 30 are connected with static contacts 60, bellows 70 are sleeved on the movable conducting rods 20, a protective cover 80 is arranged at the end part, close to the movable contacts 50, of the bellows 70, a limiting part 90 is formed on the movable conducting rods 20, the limiting part 90 abuts against the end part of the protective cover 80, and the protective cover 80 is arranged close to the shielding cover.

A magnetic flux collecting ring 100 is disposed in the moving contact 50 and the fixed contact 60, for enhancing the longitudinal magnetic field of the contact gap 101.

The fixed contact 60 is connected with the fixed conductive rod 30 through a connecting bolt 110, and the movable contact 50 is connected with the movable conductive rod 20 through a connecting bolt 110, so that the combined fixed end structure and the movable end structure are convenient to install.

At least one equalizing cover 120 is disposed on a side of the static conductive rod 30 adjacent to the static cover plate 40.

A movable cover plate 130 is arranged between the movable conductive rod 20 and the housing 10, a sealing ring 140 is arranged below the movable cover plate 130, and the sealing ring 140 extends to the corrugated pipe 70 for realizing the installation and sealing between the movable conductive rod 20 and the housing 10.

The shell 10 comprises an upper shell 10a and a lower shell 10b, a gap 101 is formed between the upper shell 10a and the lower shell 10b, a middle seal ring 103 connecting part 102 is arranged in the gap 101, and the middle seal ring 103 is fixed on the shell 10 through the middle seal ring 103 connecting part 102 and is positioned outside the shielding case.

The present utility model protects the bellows 70 by providing the protective cover 80 at the end of the bellows 70, and the bellows 70 touches the shield 150 when moving, so the position is also close to the shield, and the limit part 90 is formed on the movable conductive rod 20, so that limit installation of the protective cover 80 is realized. Meanwhile, the static conductive rod 30 is provided with the voltage equalizing cover 120 to realize the requirement of uniform distribution of the electric field in the pipe, and the maximum electric field intensity can be reduced, thereby being beneficial to improving the voltage withstanding requirement. The middle sealing ring 103 is also provided for sealing, further improving sealing performance and protection performance.

Certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will appreciate that a hardware manufacturer may refer to the same component by different names. The description and claims do not take the form of an element differentiated by name, but rather by functionality. As used throughout the specification and claims, the word "comprise" is an open-ended term, and thus should be interpreted to mean "include, but not limited to. By "substantially" is meant that within an acceptable error range, a person skilled in the art is able to solve the technical problem within a certain error range, substantially achieving the technical effect.

It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a commodity or system comprising such elements.

While the foregoing description illustrates and describes the preferred embodiments of the present utility model, it is to be understood that the utility model is not limited to the forms disclosed herein, but is not to be construed as limited to other embodiments, and is capable of numerous other combinations, modifications and environments and is capable of changes or modifications within the scope of the inventive concept as described herein, either as a result of the foregoing teachings or as a result of the knowledge or technology in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.

Claims (6)

1. The utility model provides a protection type vacuum interrupter, its characterized in that, includes the shell, the both ends of shell are provided with movable conductive rod, quiet conductive rod with be provided with quiet apron between the shell, movable conductive rod is connected with the moving contact, quiet conductive rod is connected with the static contact, the cover is equipped with the bellows on the movable conductive rod, the bellows is close to the tip of moving contact is provided with the safety cover, be formed with spacing portion on the movable conductive rod, spacing portion with the tip of safety cover offsets, be close to the setting between safety cover and the shield.

2. The protective vacuum interrupter of claim 1, wherein the movable contact and the stationary contact are provided with magnetic flux collecting rings.

3. The protective vacuum interrupter of claim 2, wherein said stationary contact is connected to said stationary conductive rod by a connecting pin, and said movable contact is connected to said movable conductive rod by a connecting pin.

4. A protective vacuum interrupter as defined in claim 3, wherein said static conductive rod is provided with at least one pressure equalizing shield on a side thereof adjacent said static cover plate.

5. The vacuum interrupter of claim 4, wherein a movable cover plate is disposed between the movable conductive rod and the housing, and a sealing ring is disposed below the movable cover plate, and extends to the bellows.

6. The vacuum interrupter of claim 5, wherein the housing comprises an upper case and a lower case, a gap is formed between the upper case and the lower case, a middle seal ring connecting portion is disposed in the gap, and the middle seal ring is fixed on the housing and located outside the shielding case through the middle seal ring connecting portion.