Vacuum arc-extinguishing chamber gas external insulation aging polarity conversion device and aging equipment

Abstract

The utility model belongs to the technical field of vacuum arc extinguish chambers, and discloses a vacuum arc extinguish chamber gas external insulation burn-in polarity conversion device and burn-in equipment, the device comprises an arc extinguish chamber insulating sleeve and a pull rod with a pull distance, the top of the arc extinguish chamber insulating sleeve is sealed, the bottom of the arc extinguish chamber insulating sleeve is connected with a sealing base in a sealing manner, and the pull rod is connected with the sealing base. A mounting hole matched with a movable end guide rod of the vacuum arc-extinguishing chamber is formed in the sealing base; a sealing ring is arranged in the mounting hole; the top end of the pull rod is matched with a moving end guide rod of the vacuum arc-extinguishing chamber. A high-voltage end conversion rod and a grounding end conversion rod are arranged outside the arc extinguish chamber insulating sleeve, and the high-voltage end conversion rod and the grounding end conversion rod are both connected with a rotating device. The high-voltage end change-over lever is contacted with the static end flange and the movable end flange of the sleeve through the action of the air cylinder, and the grounding end change-over lever is contacted with the static end flange and the movable end flange of the sleeve through the action of the air cylinder, so that double-end quick aging of the arc extinguish chamber is realized.

Description

Technical Field

[0001] This utility model belongs to the field of vacuum interrupter technology, specifically relating to a vacuum interrupter gas external insulation aging polarity conversion device and aging equipment. Background Technology

[0002] During the manufacturing process of vacuum interrupters, a related power frequency and ultra-high voltage aging process is required. During aging, the moving end guide rod of the interrupter needs to be pulled to create a certain gap between the moving and stationary contacts, and high voltage is applied to both the moving and stationary ends for power frequency and ultra-high voltage aging. Currently, the operation method involves manually installing a gap-opening fixture on the moving end of the interrupter, pulling the moving end guide rod to create a gap between the moving and stationary contacts, immersing the interrupter in a liquid external insulating medium, applying high voltage to the moving end for power frequency and ultra-high voltage aging, and then manually flipping the interrupter and applying high voltage to the stationary end for aging again. For large and heavy high-voltage vacuum interrupters, manual flipping is inconvenient, and the sealing of the gap-opening mold and the liquid insulating medium must also be considered. Therefore, double-end aging of this type of product is very difficult, resulting in low processing efficiency and poor aging effect.

[0003] Chinese patent publication number CN105609346A, entitled "A Vacuum Interruptor Aging Device and Its External Insulation Protection Fixture," describes an external insulation protection fixture comprising a housing with an inflation port. The housing has a movable conductive rod outlet for the movable conductive rod of the vacuum interruptor to be aging to pass through. The movable conductive rod outlet is located around the bellows of the vacuum interruptor and has a sealing fit for sealing with the housing. This patent application does not allow for rapid inversion of the vacuum interruptor, making the double-end aging process difficult. Utility Model Content

[0004] In order to overcome the problems existing in the prior art, the purpose of this utility model is to provide a polarity conversion device and aging equipment for gas external insulation aging of vacuum interrupter, which realizes rapid double-end aging by rotating the high-voltage end conversion rod and the grounding end conversion rod.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A gas external insulation aging polarity conversion device for a vacuum interrupter includes an interrupter insulating sleeve and a pull-out rod. The top of the interrupter insulating sleeve is sealed, and the bottom of the interrupter insulating sleeve is sealed and connected to a sealing base. The sealing base has an installation hole that matches the moving end guide rod of the vacuum interrupter. A sealing ring is installed in the installation hole. The top of the pull-out rod matches the moving end guide rod of the vacuum interrupter. A high-voltage end conversion rod and a grounding end conversion rod are provided outside the interrupter insulating sleeve, and both the high-voltage end conversion rod and the grounding end conversion rod are connected to a rotating device.

[0007] Optionally, the rotation diameter of both the high-voltage end switching rod and the grounding end switching rod is greater than or equal to the distance from the top to the bottom of the arc-extinguishing chamber insulating sleeve.

[0008] Optionally, the vacuum interrupter gas external insulation aging polarity conversion device further includes an elastic connecting rod, the bottom of which matches the stationary end guide rod of the vacuum interrupter.

[0009] Optionally, the top of the arc-extinguishing chamber insulating sleeve is sealed with a stationary flange.

[0010] Optionally, the sealing base is a topped hollow column, the diameter of the sealing base is smaller than the diameter of the arc-extinguishing chamber insulating sleeve, and the sealing base is disposed inside the arc-extinguishing chamber insulating sleeve; the bottom of the arc-extinguishing chamber insulating sleeve is sealed to a moving end flange, and the bottom of the sealing base is sealed to the moving end flange.

[0011] Optionally, the bottom inner side of the sealing base is a through hole, and the outer side is provided with an annular outer edge. The sealing base is connected to the moving end flange through the annular outer edge.

[0012] Optionally, the pull-out distance rod includes a connecting end that matches the moving end guide rod of the vacuum interrupter, the bottom of the connecting end of the pull-out distance rod is connected to a rod body, and the moving end flange has a through hole with a diameter larger than the rod body of the pull-out distance rod.

[0013] Optionally, the bottom of the arc-extinguishing chamber insulating sleeve is connected to a pull rod insulating sleeve, and the pull rod insulating sleeve is provided with a power device that matches the pull-out distance from the bottom of the pull rod.

[0014] Optionally, both the high-voltage end conversion rod and the grounding end conversion rod are connected to an insulating bracket at their bottom.

[0015] A vacuum interrupter gas external insulation aging equipment, employing the aforementioned vacuum interrupter gas external insulation aging polarity conversion device.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This invention proposes a polarity conversion device for gas external insulation aging of a vacuum interrupter. A vacuum interrupter is installed inside an insulating bushing. The guide rod of the vacuum interrupter passes through a sealed base and is fitted with a pull rod. The lower end of the pull rod can drive the moving end guide rod of the interrupter to move up and down. The high-voltage end conversion rod contacts the stationary and moving end flanges of the bushing through a cylinder action. The grounding end conversion rod contacts the stationary and moving end flanges of the bushing through a cylinder action, thereby realizing the double-end aging of the interrupter.

[0018] Furthermore, this invention enables automatic high-voltage discharge after the completion of power frequency ultra-high voltage aging, eliminating the risk of high-voltage electric shock. During power frequency ultra-high voltage aging, the vacuum interrupter is automatically opened to a certain distance by pulling the lower end of the pull rod. The switching device facilitates aging at both ends of the interrupter, improving work efficiency. Attached Figure Description

[0019] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely schematic to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. In the drawings:

[0020] Figure 1 This is a schematic diagram of the structure of the gas external insulation aging polarity conversion device for the vacuum interrupter of this utility model;

[0021] Wherein: 1-High voltage end conversion rod; 2-Insulating bracket; 3-Vacuum interrupter; 4-Extinguishing chamber insulating sleeve; 5-Tie rod insulating sleeve; 6-Grounding end conversion rod; 7-Sealed base; 8-Elastic connecting rod; 9-Static end flange; 10-Dynamic end flange; 11-Pull-out distance tie rod. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] When an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments. The use of the term "horizontal" does not imply that the component is required to be absolutely horizontal, but rather that it may be slightly tilted. "Horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0026] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this utility model, it should be understood that the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or collections thereof.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0028] The present invention will now be described in detail with reference to the accompanying drawings.

[0029] A gas external insulation aging polarity conversion device for a vacuum interrupter is characterized by comprising an interrupter insulating sleeve 4 and a pull-out rod 11. The top of the interrupter insulating sleeve 4 is sealed, and the bottom of the interrupter insulating sleeve 4 is sealed and connected to a sealing base 7. The sealing base 7 has an installation hole that matches the moving end guide rod of the vacuum interrupter 3. A sealing ring is provided in the installation hole. The top of the pull-out rod 11 matches the moving end guide rod of the vacuum interrupter 3. A high-voltage end conversion rod 1 and a grounding end conversion rod 6 are provided outside the interrupter insulating sleeve 4, and both the high-voltage end conversion rod 1 and the grounding end conversion rod 6 are connected to a rotating device.

[0030] The sealing base 7 is a topped hollow column. The diameter of the sealing base 7 is smaller than the diameter of the arc-extinguishing chamber insulating sleeve 4. The sealing base 7 is disposed inside the arc-extinguishing chamber insulating sleeve 4. The bottom of the arc-extinguishing chamber insulating sleeve 4 is sealed to a moving end flange 10. The bottom of the sealing base 7 is sealed to the moving end flange 10.

[0031] This invention proposes a polarity conversion device for aging the gas external insulation of a vacuum interrupter. By pulling the lower end of the pull rod 11, the moving end guide rod of the vacuum interrupter 3 can be moved up and down. The high-voltage conversion rod 1 rotates to contact the stationary flange 9 and the moving flange 10 of the insulating bushing 4 of the interrupter. The grounding conversion rod 6 is activated by a cylinder to contact the stationary flange and the moving flange of the bushing, thus achieving double-end aging of the interrupter. During power frequency ultra-high voltage aging, the vacuum interrupter is automatically pulled open to a certain distance by pulling the lower end of the pull rod. The conversion device facilitates double-end aging of the interrupter, improving work efficiency.

[0032] Example 1

[0033] See Figure 1 The present invention relates to a gas external insulation aging polarity conversion device for a vacuum interrupter, comprising an interrupter insulating sleeve 4 and a pull rod 11.

[0034] A sealing base 7 is provided inside the insulating sleeve 4 of the arc-extinguishing chamber, and the vacuum arc-extinguishing chamber 3 is installed on the sealing base 7. The bottom of the insulating sleeve 4 of the arc-extinguishing chamber is sealed to the sealing base 7, and the sealing base 7 has an installation hole that matches the moving end guide rod of the vacuum arc-extinguishing chamber 3; a sealing ring is provided in the installation hole.

[0035] The top end of the pull rod 11 matches the moving end guide rod of the vacuum interrupter 3, and is used to connect with the moving end guide rod of the vacuum interrupter 3. Specifically, the bottom of the vacuum interrupter 3 is the moving end, and the top is the stationary end.

[0036] The top of the insulating sleeve 4 of the arc-extinguishing chamber is sealed with a stationary flange 9.

[0037] In this embodiment, the sealing base 7 is a topped hollow cylinder. The diameter of the sealing base 7 is smaller than the diameter of the arc-extinguishing chamber insulating sleeve 4. The sealing base 7 is disposed inside the arc-extinguishing chamber insulating sleeve 4. The bottom of the arc-extinguishing chamber insulating sleeve 4 is sealed to a moving end flange 10, and the bottom of the sealing base 7 is sealed to the moving end flange 10. The inner side of the bottom of the sealing base 7 is a through hole, and the outer side is provided with an annular outer edge. The sealing base 7 is connected to the moving end flange 10 through the annular outer edge.

[0038] The bottom of the arc-extinguishing chamber insulating sleeve 4 is connected to the pull rod insulating sleeve 5, the bottom of the moving end flange 10 is sleeved outside the pull rod insulating sleeve 5, and the pull rod insulating sleeve 5 is provided with a power device that matches the pull distance from the bottom of the pull rod 11.

[0039] The pull-out rod 11 includes a connecting end that matches the moving end guide rod of the vacuum interrupter 3. A rod body is connected to the bottom of the connecting end of the pull-out rod 11. A through hole with a diameter larger than the rod body is provided on the moving end flange 10. The connecting end of the pull-out rod 11 is connected to the moving end guide rod of the vacuum interrupter 3. The rod body passes through the through hole of the moving end flange 10 into the rod insulating sleeve 5 and is connected to the power device in the rod insulating sleeve 5.

[0040] The moving end of the vacuum interrupter 3 is equipped with a pull rod 11, and the stationary end of the vacuum interrupter 3 is equipped with an elastic connecting rod 8; the pull rod 11 of the vacuum interrupter 3 passes through the central through hole of the sealing base 7 and the moving end flange 10.

[0041] The aforementioned vacuum interrupter gas external insulation aging polarity conversion device also includes an elastic connecting rod 8, the bottom of which matches the stationary guide rod of the vacuum interrupter 3. Specifically, the elastic connecting rod 8 is a metal spring, used to adapt to vacuum interrupters 3 of different sizes. The top end of the elastic connecting rod 8 is connected to the interrupter insulation sleeve 4, and the bottom end is connected to the stationary guide rod of the vacuum interrupter 3.

[0042] The lower end of the pull rod 11 can drive the moving end guide rod of the vacuum interrupter 3 to move up and down through a servo mechanism.

[0043] A high-voltage conversion rod 1 is provided on one side of the arc-extinguishing chamber insulating sleeve 4, and a grounding conversion rod 6 is provided on the other side. Insulating brackets 2 are connected to the bottom of the high-voltage conversion rod 1 and the bottom of the grounding conversion rod 6, respectively, and are supported and fixed by the insulating brackets 2.

[0044] Both the high-voltage end conversion rod 1 and the grounding end conversion rod 6 are connected to a rotating device.

[0045] The rotation diameters of both the high-voltage end switching rod 1 and the grounding end switching rod 6 are greater than or equal to the distance from the top to the bottom of the arc-extinguishing chamber insulating sleeve 4. Insulating supports 2 are connected to the bottom of both the high-voltage end switching rod 1 and the grounding end switching rod 6.

[0046] Furthermore, the bottom of the high-voltage conversion rod 1 and the bottom of the grounding conversion rod 6 are respectively connected to a cylinder, which is fixed on the insulating bracket 2. Both the high-voltage conversion rod 1 and the grounding conversion rod 6 are connected to the insulating bracket 2 through the cylinder.

[0047] The bottom of the arc-extinguishing chamber insulating sleeve 4 is connected to the pull rod insulating sleeve 5, the pull rod 11 extends into the pull rod insulating sleeve 5, and the moving end flange 10 is sleeved on the pull rod insulating sleeve 5.

[0048] The high-voltage end conversion rod 1 contacts the stationary end flange 9 and the moving end flange 10 of the bushing through the action of the cylinder, and the grounding end conversion rod 6 contacts the stationary end flange 10 and the moving end flange 9 of the bushing through the action of the cylinder, thereby realizing the double-end aging of the arc-extinguishing chamber.

[0049] During the aging process at the stationary end, the high-pressure end switching rod 1 is activated to contact the stationary end flange 9, and the grounding end switching rod 6 is activated to contact the moving end flange 10, thus forming an aging circuit for aging.

[0050] During the aging process at the moving end, the high-pressure end switching rod 1 is activated to contact the moving end flange 10, and the grounding end switching rod 6 is activated to contact the stationary end flange 9, thus forming an aging circuit for aging.

[0051] Optionally, the pull-out rod 11 is threadedly connected to the moving end guide rod of the vacuum interrupter 3.

[0052] Optionally, the vacuum interrupter 3 is mounted on the sealing base 7 by screws.

[0053] Optionally, the sealing base 7 is mounted on the moving end flange 10 by screws.

[0054] Optionally, the moving end flange 10 is mounted on the arc-extinguishing chamber tie rod insulating sleeve 5 by screws.

[0055] Optionally, the stationary flange 9 is mounted on the arc-extinguishing chamber insulating sleeve 4 by screws.

[0056] Optionally, the elastic connecting rod 8 is mounted on the stationary guide rod of the arc-extinguishing chamber 3 by screws.

[0057] Optionally, the high-pressure end conversion rod 1 is activated by a cylinder to contact the stationary end flange 9 and the moving end flange 10.

[0058] Optionally, the grounding end conversion rod 6 is activated by a cylinder to contact the stationary end flange 9 and the moving end flange 10.

[0059] Example 2

[0060] This utility model discloses a gas external insulation aging polarity conversion device for a vacuum interrupter, which includes the following steps in use:

[0061] First, fix and seal the stationary flange 9 to the upper end of the arc-extinguishing chamber insulating sleeve 4. Then, fix the sealing base 7 to the moving end flange 10 of the arc-extinguishing chamber insulating sleeve 4. Install the vacuum arc-extinguishing chamber 3 with the moving end facing down on the sealing base 7. Install the elastic connecting rod 8 on the stationary end of the vacuum arc-extinguishing chamber 3. Then, fit the arc-extinguishing chamber insulating sleeve 4 into the vacuum arc-extinguishing chamber 3 from top to bottom. The lower end of the arc-extinguishing chamber insulating sleeve 4 is fixedly and sealed to the moving end flange 10.

[0062] After evacuating the insulating sleeve 4 of the vacuum interrupter 3, it is filled with insulating gas at a certain pressure, and then the pull-out connecting rod 11 is connected to the moving end of the vacuum interrupter 3.

[0063] Connect the fully inflated arc-extinguishing chamber insulating sleeve 4, which contains the vacuum arc-extinguishing chamber 3, to the pull rod insulating sleeve 5. During connection, align the connecting clamp, which is pulled apart from the center of the pull rod 11 and the center of the pull rod insulating sleeve 5, and then insert it.

[0064] The clamp at the center of the operating rod insulating sleeve 5 clamps the pull-out connecting rod 11, pulling it open by a certain distance. The opening distance is precisely adjusted between 0-100mm using a servo mechanism. The operating cylinder actuates to make the high-pressure end conversion rod 1 contact the stationary end flange 9, and the grounding end conversion rod 6 contact the moving end flange 10. High pressure is applied to the high-pressure conversion rod 1 to perform stationary end aging of the product. The operating cylinder actuates to make the high-pressure end conversion rod 1 contact the moving end flange 10, and the grounding end conversion rod 6 contact the stationary end flange 9. High pressure is applied to the high-pressure conversion rod 1 to perform moving end aging of the product.

[0065] After aging is completed, remove the screws connecting the arc-extinguishing chamber insulating sleeve 4 and the tie rod insulating sleeve 5 to separate them, recover and release the gas in the arc-extinguishing chamber insulating sleeve 4, take out the vacuum arc-extinguishing chamber 3, install the next vacuum arc-extinguishing chamber 3 and repeat the above process for aging.

[0066] The stationary flange 9 is fixedly sealed to the upper end of the arc-extinguishing chamber insulating sleeve 4, forming a component assembly. The sealing base 7 is fixed to the moving end flange 10 of the arc-extinguishing chamber insulating sleeve, which is also a component assembly and only needs to be assembled once.

[0067] The present invention relates to a vacuum interrupter gas external insulation aging polarity conversion device. It only requires the operation of the high-voltage end conversion rod 1 and the grounding end conversion rod 6 to perform cross-action. The servo mechanism controls the vacuum interrupter 3 to open the distance, which can easily realize the double-end aging of the vacuum interrupter, reduce labor intensity, improve work efficiency, and make the operation safer.

[0068] Example 3

[0069] A vacuum interrupter gas external insulation aging device is provided, which adopts a vacuum interrupter gas external insulation aging polarity conversion device as described in Example 1.

[0070] Unless otherwise specified, the equipment components involved in the above embodiments are all conventional equipment components, and the structural settings, working methods or control methods involved are all conventional settings, working methods or control methods in the art unless otherwise specified.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A vacuum interrupter gas external insulation burn-in polarity conversion device, characterized by, The instrument includes an arc-extinguishing chamber insulating sleeve (4) and a pull-out rod (11). The top of the arc-extinguishing chamber insulating sleeve (4) is sealed, and the bottom of the arc-extinguishing chamber insulating sleeve (4) is sealed and connected to a sealing base (7). The sealing base (7) has an installation hole that matches the moving end guide rod of the vacuum arc-extinguishing chamber (3). A sealing ring is provided in the installation hole. The top of the pull-out rod (11) matches the moving end guide rod of the vacuum arc-extinguishing chamber (3). A high-voltage end conversion rod (1) and a grounding end conversion rod (6) are provided outside the arc-extinguishing chamber insulating sleeve (4). Both the high-voltage end conversion rod (1) and the grounding end conversion rod (6) are connected to a rotating device.

2. The vacuum interrupter gas external insulation burn-in polarity conversion device of claim 1, wherein, The rotation diameters of the high-voltage end switching rod (1) and the grounding end switching rod (6) are both greater than or equal to the distance from the top to the bottom of the arc-extinguishing chamber insulating sleeve (4).

3. The vacuum interrupter gas external insulation aging polarity conversion device according to claim 1, characterized in that, The vacuum interrupter gas external insulation aging polarity conversion device also includes an elastic connecting rod (8), the bottom of which matches the stationary end guide rod of the vacuum interrupter (3).

4. The vacuum interrupter gas external insulation aging polarity conversion device according to claim 1, characterized in that, The top of the arc-extinguishing chamber insulating sleeve (4) is sealed with a stationary flange (9).

5. The vacuum interrupter gas external insulation burn-in polarity conversion device of claim 1, wherein, The sealing base (7) is a top hollow column. The diameter of the sealing base (7) is smaller than the diameter of the arc-extinguishing chamber insulating sleeve (4). The sealing base (7) is set inside the arc-extinguishing chamber insulating sleeve (4). The bottom of the arc-extinguishing chamber insulating sleeve (4) is sealed with a moving end flange (10). The bottom of the sealing base (7) is sealed with the moving end flange (10).

6. The vacuum interrupter gas external insulation burn-in polarity conversion device of claim 5, wherein, The bottom inner side of the sealing base (7) is a through hole, and the outer side is provided with an annular outer edge. The sealing base (7) is connected to the moving end flange (10) through the annular outer edge.

7. The vacuum interrupter gas external insulation burn-in polarity conversion device of claim 5, wherein, The pull-out distance rod (11) includes a connecting end that matches the moving end guide rod of the vacuum interrupter (3). The bottom of the connecting end of the pull-out distance rod (11) is connected to a rod body. The moving end flange (10) has a through hole with a diameter larger than that of the rod body of the pull-out distance rod (11).

8. The vacuum interrupter gas external insulation burn-in polarity conversion device of claim 1, wherein, The bottom of the arc-extinguishing chamber insulating sleeve (4) is connected to the pull rod insulating sleeve (5), and the pull rod insulating sleeve (5) is provided with a power device that matches the bottom of the pull rod (11).

9. The vacuum interrupter gas external insulation burn-in polarity conversion device of claim 1, wherein, The bottom of both the high-voltage end conversion rod (1) and the grounding end conversion rod (6) are connected to an insulating bracket (2).

10. A vacuum interrupter gas external insulation ageing device, characterized by The vacuum interrupter gas external insulation aging polarity conversion device as described in any one of claims 1-9 is adopted.

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