CN205487840U - Vacuum interrupter smelts device always and outer insulation protection frock thereof - Google Patents

Abstract

The utility model relates to a vacuum interrupter smelts device always and outer insulation protection frock thereof, outer insulation protection frock is including the casing that has the inflation inlet, it wears to export to be equipped with the conducting rod that moves that the conducting rod wore out that moves that is used for supplying treating the vacuum interrupter that smelts always on the casing, move the conducting rod wear the exit in the periphery of vacuum interrupter's bellows be equipped with be used for with vacuum interrupter housing seal complex sealing matching portion, it wears to export to be equipped with the conducting rod that moves that the conducting rod wore out that moves that is used for supplying treating the vacuum interrupter that smelts always on the casing, move the conducting rod wear the exit in the periphery of vacuum interrupter's bellows be equipped with be used for with vacuum interrupter housing seal complex sealing matching portion.

Description

Vacuum interrupter aging device and its external insulation protection tooling

technical field

The utility model relates to an external insulation protection tool in the aging process of a vacuum interrupter and an aging device for a vacuum interrupter using the outer insulation protection tool.

Background technique

The existing vacuum interrupter mainly includes a moving contact, a static contact, a moving conductive rod, a static conductive rod, a bellows, a static end cover plate and a moving end cover plate. At present, when carrying out high-voltage aging of vacuum interrupters, it is necessary to apply high voltage higher than its rated voltage on the dynamic and static ends of the vacuum interrupter. In the atmospheric environment, the vacuum interrupter is prone to external breakdown. , so it is necessary to use a medium with better insulation performance to realize the external insulation protection of the vacuum interrupter. Usually, insulating fluid, transformer oil and sulfur hexafluoride are more widely used insulating media at home and abroad. Put the vacuum interrupter to be aged into a sealed tank, and fill the sealed tank with insulating fluid or transformer oil or Sulfur hexafluoride gas, etc. However, the use of insulating fluid and transformer oil as the insulating medium has the following problems: first, after use, the outer casing of the vacuum interrupter needs to be cleaned, which increases the time for the auxiliary process of high-voltage aging and reduces the efficiency of high-voltage aging; second, the cost is relatively high. High; third, insulating fluid and transformer oil are organic solvents, and if they are not handled properly, they will have adverse effects on the environment. When sulfur hexafluoride is used, the external insulation protective tooling includes a sealed shell, which is provided with an air filling port. When in use, the vacuum interrupter to be aged is placed inside the shell. There are problems of recycling and disposal, poor environmental friendliness and high cost.

Utility model content

The utility model relates to an external insulation protection tool for a vacuum interrupter aging device using compressed air as an insulating medium to solve the problems of high cost and adverse effects on the environment in the prior art; at the same time, the purpose of the utility model is also The purpose is to provide a vacuum interrupter burn-in device using the external insulation protection tool.

The external insulation protection tooling of the utility model adopts the following technical scheme: the external insulation protection tooling for the aging device of the vacuum interrupter chamber includes a shell with an air charging port, and the shell is provided with a vacuum arc extinguishing device for aging. The movable conductive rod piercing port of the chamber is provided with a sealing fitting part for sealing cooperation with the vacuum interrupter housing on the outer periphery of the bellows of the vacuum interrupter.

A supporting sleeve is provided between the housing and the moving end of the vacuum interrupter, the movable conductive rod is provided on the supporting sleeve, and the end of the supporting sleeve close to the moving end of the vacuum interrupter is connected with the housing A sealing fit forms said sealing fit.

The support sleeve includes an upper support sleeve and a lower support sleeve that are connected with upper and lower seals, the lower support sleeve is connected with the casing in a sealed fit, the upper end of the upper support sleeve is sealed and fitted with the casing of the vacuum interrupter to be aged, and the upper end of the movable conductive rod It is connected with a lower metal connecting rod used for transmission connection with the open-distance structure of the aging device and electrically connected with the ground electrode of the aging device when in use.

A guide plate is provided between the upper support sleeve and the lower support sleeve, and a guide hole for guiding the lower metal connecting rod to pass is provided on the guide plate.

The housing is a cylindrical structure, the upper end of the housing is provided with a sealing cover, and the sealing cover includes a cover plate on the upper end of the housing, a rotating disk on the upper end of the cover plate, a metal plate on the lower end of the cover plate and a set A sealing ring for sealing the housing on the metal disc, the diameter of the metal disc is smaller than the inner diameter of the housing, the rotating disc and the metal disc are fixedly connected by a connecting rod, and the connecting rod is threadedly connected with the cover plate.

An upper metal connecting rod is connected to the static conductive rod of the vacuum interrupter, and a connecting structure for electrically connecting with the upper metal connecting rod is arranged on the metal plate.

The vacuum interrupter aging device of the utility model adopts the following technical scheme: the vacuum interrupter aging device includes an outer insulation protection tool, a high-voltage electrode and a grounding electrode, and the outer insulation protection tool includes a shell with an air filling port. The casing is provided with a movable conductive rod outlet for the movable conductive rod of the vacuum interrupter to be aged. A seal fit for a seal fit of the chamber housing.

A supporting sleeve is provided between the housing and the moving end of the vacuum interrupter, the movable conductive rod is provided on the supporting sleeve, and the end of the supporting sleeve close to the moving end of the vacuum interrupter is connected with the housing A sealing fit forms said sealing fit.

The support sleeve includes an upper support sleeve and a lower support sleeve that are connected with upper and lower seals, the lower support sleeve is connected with the casing in a sealed fit, the upper end of the upper support sleeve is sealed and fitted with the casing of the vacuum interrupter to be aged, and the upper end of the movable conductive rod It is connected with a lower metal connecting rod used for transmission connection with the open-distance structure of the aging device and electrically connected with the ground electrode of the aging device when in use.

The housing is a cylindrical structure, the upper end of the housing is provided with a sealing cover, and the sealing cover includes a cover plate on the upper end of the housing, a rotating disk on the upper end of the cover plate, a metal plate on the lower end of the cover plate and a set A sealing ring for sealing the housing on the metal disc, the diameter of the metal disc is smaller than the inner diameter of the housing, the rotating disc and the metal disc are fixedly connected by a connecting rod, and the connecting rod is threadedly connected with the cover plate.

The beneficial effects of the utility model are: the bellows in the vacuum interrupter are welded on the outside of the moving conductive rod and the inner opening of the moving end cover, and when the vacuum switch is opened or closed, it is compressed or restored, and the bellows is a vacuum An important component for dynamic sealing of the arc extinguishing chamber, which determines the mechanical life of the arc extinguishing chamber. In the prior art, the entire vacuum interrupter is put into the housing. When the internal pressure of the housing increases, the vacuum will be extinguished. The bellows in the arc chamber affect the performance of the vacuum interrupter. In this application, the casing is provided with a moving conductive rod through outlet, and the moving conductive rod through the outlet is located on the periphery of the bellows. The cavity is isolated from the space inside the shell, so the technical solution of filling compressed air into the shell as an insulating medium in this application can be adopted. Due to the existence of the sealing fit part, during the working process, as the compressed air is filled into the shell The pressure increase inside the body will not affect the bellows.

Description of drawings

Fig. 1 is a structural diagram of an embodiment of a vacuum interrupter aging device of the present invention.

detailed description

The burn-in device of the vacuum interrupter, as shown in Figure 1, includes the outer insulation protective tooling, the charging and discharging device, the high-voltage electrode, the grounding electrode, and the gap between the dynamic and static contacts used to adjust the vacuum interrupter to be aged. The distance opening device, the external insulation protection tool includes a cylindrical shell 4 whose axis extends in the up and down direction, a base 7 arranged at the lower end of the cylindrical shell 4 and sealingly matched with the cylindrical shell 4, and a base 7 arranged on the cylindrical shell The upper end of the body 4 is a sealing cover that is sealed with the cylindrical shell 4. The inner cavity of the cylindrical shell 4 forms a working chamber 15 for the aging vacuum interrupter 3 to be installed and aged. The base 7 is connected with the vacuum interrupter. Between the chambers 3, there is a supporting sleeve whose axis extends in the up and down direction. The base 7 is made of bakelite insulating material. The supporting sleeve includes an upper supporting sleeve 5 and a lower supporting sleeve 13 which are arranged on the upper and lower coaxial lines and are sealed and fitted. The upper end of the sleeve 5 is in sealing fit with the lower end of the vacuum interrupter 3 to be aged, the lower end of the lower support sleeve 13 is in sealing fit with the base 7, the lower end of the upper support sleeve 5 is in sealing fit with the upper end of the lower support sleeve 13, and the upper support sleeve The inner cavity of 5 forms a movable conductive rod piercing outlet for the movable conductive rod of the vacuum interrupter 3 to be aged. The base 7 is provided with a base opening that communicates with the outside air and the inner cavity of the upper and lower support sleeves. In an example, the upper end of the upper support sleeve 5 is sealed and fitted with the moving end cover plate 17 of the vacuum interrupter 3 to be burnt to form a sealed fitting portion. During use, the lower support sleeve 13 is fixedly connected to the bottom plate 7. The lower support sleeve 13 is universal, and its size is a certain value. The upper support sleeve 5 can be replaced according to different sizes of vacuum interrupters. The inner cavity of the support sleeve 5 and the inner cavity of the lower support sleeve 13 form a base through hole, and the base through hole is used to isolate the working cavity 15 formed by the cylindrical shell 4 from the inner cavity of the bellows, so that in the working direction When the chamber 15 is filled with compressed air, the increase of the internal pressure of the working chamber 15 will not affect the bellows. The base 7 is provided with an air charging port 8 and an air releasing port 9 respectively connected with the air charging and discharging device of the aging refining device. Air.

The upper and lower ends of the vacuum interrupter 3 to be aged are respectively connected with an upper metal connecting rod 2 and a lower metal connecting rod 6, and the lower metal connecting rod 6 is conductively connected with the moving conductive rod of the vacuum interrupter 3 to be aged. The lower metal connecting rod 6 passes through the through hole of the base to drive and connect with the open-distance device of the aging refining device and is grounded. A guide plate 14 is arranged between the upper support sleeve 5 and the lower support sleeve 13. The guide hole through which the rod 6 passes and guides the movement, and the upper metal connecting rod 2 is conductively connected with the static end of the vacuum interrupter 3 to be aged. The sealing cover includes a cover plate 1 arranged on the upper end of the cylindrical housing 4, a rotating disk 10 arranged on the upper end of the cover plate 1, a metal plate arranged on the lower end of the cover plate 1 and a sealing ring 11 arranged on the metal plate, and the rotating disk 10 and the metal disc are fixedly connected through the connecting rod 12, the connecting rod 12 is threadedly connected with the cover plate 1, the diameter of the metal disc is smaller than the inner diameter of the cylindrical shell 4, and the metal disc is provided with a 3. The upper metal connecting rod 2 at the upper end is plugged into a plug-in structure with conductive coordination, and the metal disk is connected to the high-voltage electrode of the aging device. During use, the sealing cover is set on the upper end of the cylindrical shell 4. The plate 10 presses the sealing ring 11 into the inner cavity of the upper end of the cylindrical shell 4 to realize the sealing and fitting connection between the sealing cover and the upper end of the cylindrical shell 4, and at the same time, a pin 16 is arranged on the lower end surface of the metal plate, and the upper metal connecting rod 2 The upper end is provided with a jack, and the contact pin is mated with the jack to realize the conductive connection.

The aging process of the aging vacuum interrupter in the utility model is as follows: install the upper and lower metal connecting rods on both ends of the aging vacuum interrupter 3, then put them into the cylindrical shell 4, and wait for aging The moving end of the vacuum interrupter 3 chamber is placed downward on the upper support sleeve 5; the upper support sleeve 5 and the lower end of the vacuum interrupter 3 are sealed by a sealing ring, and the sealing pressure comes from the self-weight of the vacuum interrupter 3; the vacuum interrupter The movable conductive rod of the chamber 3 is located in the inner cavity of the upper support sleeve 5, and the inner cavity of the upper support sleeve 5 is connected with the atmosphere, and is connected with the working chamber 15 through the sealing fit between the upper support sleeve 5, the lower support sleeve 13 and the base 7. Therefore, when the working chamber 15 is filled with compressed air of a certain pressure, the bellows will not be under pressure; cover the sealing cover and tighten the rotating disk 10, and the sealing ring is passed between the sealing cover and the cylindrical housing 4 11 Sealing, the metal plate and the upper metal connecting rod 5 are in reliable contact by plugging, and the metal plate is connected to the high-voltage electrode; the lower metal connecting rod 6 is connected to the opening distance device of the aging refining equipment, which plays the role of adjusting the opening distance and grounding The inflation port 8 and the deflation port 9 are located on the base 7, the upper ends of the inflation port 8 and the deflation port 9 communicate with the working chamber 15 of the cylindrical shell 4, and the lower ends of the inflation port 8 and the deflation port 9 are connected with the automatic inflation and deflation of the aging refining equipment The device is connected; after the preparation is completed, start the equipment to inflate, when the required pressure is inflated, the inflation valve will automatically lock and maintain the pressure, and the aging of the vacuum interrupter will start; after the aging process is over, start the deflation button, and the equipment will automatically release Compressed air in the working chamber of the cylindrical housing.

The cylindrical shell 4 is made of transparent plexiglass, and the transparent and insulating plexiglass is used as the container for the high-voltage aging vacuum interrupter, so that the operator can intuitively observe the high-voltage aging vacuum interrupter The status of the room is convenient for the operator to observe, record and summarize. At the same time, once the abnormal situation is intuitively observed, the corresponding response can be made immediately. Using compressed air as the external insulation, there is no need to post-process the shell before and after high-voltage aging, which saves time and improves the efficiency of high-voltage aging; in addition, because compressed air is relatively expensive compared to other insulating media It is lower, which reduces the cost; moreover, the use of compressed air will not cause adverse effects on the environment.

In other embodiments of the present utility model, the cylindrical shell can also be integrally formed with the base; it is also possible not to use a support sleeve, but to open a hole for the movable conductive rod on the bottom plate. At this time, the bottom plate and the shell of the vacuum interrupter Body seal fit to form a seal fit portion; the upper end of the upper support sleeve not only forms a seal fit portion with the moving end cover plate, but also forms a seal fit portion with the vertical housing of the vacuum interrupter; the support sleeve may only include the upper support The support sleeve and the base can also be set integrally; the upper and lower metal connecting rods may not be provided if the test conditions are met; the guide plate may not be provided between the upper and lower support sleeves.

The embodiments of the external insulation protection tooling for the aging device of the vacuum interrupter are the same as the embodiments of the outer insulation protection tooling in the above-mentioned embodiments of the aging device of the vacuum interrupter, and will not be repeated here.

Claims (10)

1. The external insulation protective tooling for the vacuum interrupter burn-in device, including a shell with an air filling port, which is characterized in that: the shell is provided with a moving conductive rod for passing through the vacuum interrupter to be aged. The movable conducting rod piercing outlet is located at the outer periphery of the bellows of the vacuum interrupter, and is provided with a sealing fit part for sealingly matching with the vacuum interrupter housing. 2. The external insulation protective tooling for vacuum interrupter aging device according to claim 1, characterized in that: a support sleeve is provided between the housing and the movable end of the vacuum interrupter, and the movable conductive rod passes through the outlet It is arranged on the support sleeve, and the end of the support sleeve close to the moving end of the vacuum interrupter is sealed and matched with the housing of the vacuum interrupter to form the sealing fit portion. 3. The external insulation protective tooling for the vacuum interrupter aging device according to claim 2, characterized in that: the support sleeve includes an upper support sleeve and a lower support sleeve connected with upper and lower sealing fits, and the lower support sleeve is connected to the housing Sealed fit connection, the upper end of the upper support sleeve is sealed and matched with the housing of the vacuum interrupter to be aged, and the movable conductive rod is connected with the open-distance structure transmission connection of the burn-in device and grounded with the burn-in device during use The lower metal connecting rod to which the electrodes are electrically connected. 4. The external insulation protective tooling for the vacuum interrupter aging device according to claim 3, characterized in that: a guide plate is provided between the upper support sleeve and the lower support sleeve, and a lower metal plate is provided on the guide plate. Pilot hole through which the connecting rod is guided. 5. The external insulation protection tool for vacuum interrupter burn-in device according to any one of claims 1-4, characterized in that: the housing is a cylindrical structure, and the upper end of the housing is provided with a sealing cover, which is sealed The cover includes a cover plate set on the upper end of the housing, a rotating disc set on the upper end of the cover plate, a metal plate set on the lower end of the cover plate and a sealing ring set on the metal plate for sealing the shell. The diameter of the metal plate is less than The inner diameter of the housing, the rotating disk and the metal disk are fixedly connected through a connecting rod, and the connecting rod is threadedly connected with the cover plate. 6. The external insulation protective tooling for the vacuum interrupter aging device according to claim 5, characterized in that: the static conductive rod of the vacuum interrupter is connected with an upper metal connecting rod, and the metal plate is provided with a connecting rod for connecting with the upper A connection structure in which metal connecting rods are electrically connected. 7. Vacuum interrupter burn-in device, including external insulation protection tooling, high-voltage electrodes and grounding electrodes, and the external insulation protection tooling includes a shell with an air filling port, which is characterized in that: the shell is provided with a device for aging The moving conductive rod piercing port of the vacuum interrupter is provided with a sealing fit part for sealing with the vacuum interrupter shell on the outer periphery of the bellows of the vacuum interrupter. 8. The vacuum interrupter burn-in device according to claim 7, characterized in that: a support sleeve is provided between the housing and the moving end of the vacuum interrupter, and the moving conductive rod is provided on the support sleeve through the outlet. One end of the support sleeve close to the moving end of the vacuum interrupter is sealed and matched with the housing of the vacuum interrupter to form the sealing fit portion. 9. The vacuum interrupter burn-in device according to claim 8, characterized in that: the support sleeve comprises an upper support sleeve and a lower support sleeve which are sealed and fitted up and down, the lower support sleeve is connected with the casing in a sealed fit, and the upper support sleeve is sealed and fitted with the housing. The upper end of the support sleeve is sealed and matched with the shell of the vacuum interrupter to be aged, and the movable conductive rod is connected with the bottom of the open-distance structure of the burn-in device and electrically connected with the ground electrode of the burn-in device when in use. Metal connecting rod. 10. The vacuum interrupter aging device according to any one of claims 7-9, characterized in that: the housing is a cylindrical structure, the upper end of the housing is provided with a sealing cover, and the sealing cover includes a cover on The cover plate at the upper end of the housing, the rotating disc arranged at the upper end of the cover plate, the metal disc arranged at the lower end of the cover plate and the sealing ring for sealing the housing provided on the metal disc, the diameter of the metal disc is smaller than the inner diameter of the housing, The rotating disk and the metal disk are fixedly connected through a connecting rod, and the connecting rod is threadedly connected with the cover plate.