Vacuum arc-extinguishing chamber easy to disassemble and assemble

Abstract

The utility model provides a vacuum arc-extinguishing chamber easy to disassemble and assemble, and belongs to the field of electrical technology. A vacuum arc-extinguishing chamber easy to disassemble and assemble comprises a ceramic shell, a movable cover plate, a static cover plate, a static rod, a movable rod, a movable contact, a static contact, a corrugated pipe and a ceramic column. According to the utility model, the movable cover plate and the static cover plate are respectively arranged at the two ends of the porcelain shell, the outer edges of the movable cover plate and the static cover plate extend to the outer side of the porcelain shell to form the movable connecting flange and the static connecting flange, and the first connecting parts are arranged on the movable connecting flange and the static connecting flange; a ceramic column is arranged between the movable connecting flange and the static connecting flange in the axial direction of the ceramic shell, second connecting parts corresponding to the first connecting parts are arranged at the two ends of the ceramic column, and the first connecting parts are detachably connected with the second connecting parts, so that the movable connecting flange and the static connecting flange can be pulled or loosened through the ceramic column. The movable cover plate and the static cover plate are compressed or loosened on the porcelain shell, so that quick-wear parts in the vacuum arc-extinguishing chamber can be conveniently replaced and maintained, and the vacuum arc-extinguishing chamber is convenient to disassemble and assemble and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of electricity, and particularly relates to a vacuum interrupter which is easy to disassemble and assemble. Background Art

[0002] As a common structural component in the power grid system, the vacuum interrupter is usually arranged at the position where the circuit needs to be switched on and off, and can reduce or eliminate the influence of the arc generated during the circuit switching process, maintain the stability of the power grid, and extend the service life of related electrical structures.

[0003] Currently, the existing vacuum interrupters on the market include structural components such as a porcelain shell, a moving rod, a static rod, a moving contact, a static contact, a static cover plate, a moving cover plate, a shielding cylinder, and a corrugated pipe. The moving rod and the static rod are arranged end to end and extend into the porcelain shell from both ends of the porcelain shell respectively. A moving contact and a static contact are respectively installed at the opposite ends of the moving rod and the static rod inside the porcelain shell. At the same time, a moving cover plate and a static cover plate are respectively arranged at both ends of the porcelain shell and correspond to the moving rod and the static rod respectively. The static rod is fixedly installed on the static cover plate. A corrugated pipe is arranged between the moving cover plate and the moving rod. At the same time, a shielding cylinder is coaxially arranged inside the porcelain shell and sleeved outside the moving contact and the static contact. The inside of the porcelain shell is a vacuum environment. The shielding cylinder can prevent the arc from breaking through the porcelain shell and can reduce or eliminate the influence of the arc generated when the moving contact and the static contact are separated and contacted. However, in the existing vacuum interrupters, a sealing ring is usually arranged between the moving cover plate and the static cover plate during their installation on the porcelain shell. For example, a vacuum interrupter disclosed in Patent CN109950091A fixes a prefabricated metal ring (the above-mentioned sealing ring) on the ceramic shell (the above-mentioned porcelain shell) first, installs a sealing ring into the seal groove, then installs the cover plate, and welds the prefabricated metal ring and the cover plate together to realize the sealing connection between the ceramic shell and the cover plate and ensure the vacuum degree inside the ceramic shell. Although the above structure can already meet the sealed installation of the static cover plate and the moving cover plate at both ends of the porcelain shell, and the sealing process usually adopts welding connection, in the vacuum interrupter, the vulnerable parts are usually the moving contact, the static contact, and the shielding cylinder, etc. After being used for a period of time, the structures such as the moving contact and the static contact will be damaged accordingly, and problems such as poor contact that affect the normal operation of the circuit are likely to occur. It is necessary to replace the vulnerable parts such as the moving contact and the static contact. Since the static cover plate and the moving cover plate usually adopt the welding sealing technology, the process of disassembling and assembling the static cover plate or the moving cover plate is relatively complicated, resulting in the industry usually directly replacing the whole vacuum interrupter, which leads to an increase in cost. Summary of the Invention

[0004] In view of the above problems existing in the prior art, the present invention aims to provide a vacuum interrupter that is easy to disassemble and assemble. The edges of the movable cover plate and the static cover plate are expanded outward and provided with a plurality of first connecting parts, so that the edges of the movable cover plate and the static cover plate extend to the outside of the porcelain shell. At the same time, a plurality of ceramic columns are arranged outside the porcelain shell and between the movable cover plate and the static cover plate, and both ends of the ceramic columns are provided with second connecting parts and are respectively detachably connected to the first connecting parts on the movable cover plate and the static cover plate, pressing the movable cover plate and the static cover plate against both ends of the porcelain shell to meet the requirements of stable installation. At the same time, the movable cover plate and the static cover plate can be separated from the porcelain shell by disassembling the first connecting parts and the second connecting parts, so as to facilitate the maintenance and replacement of vulnerable parts, with more convenient disassembly and assembly and reduced costs.

[0005] The specific technical solutions are as follows:

[0006] A vacuum interrupter that is easy to disassemble and assemble includes a porcelain shell, a movable cover plate, a static cover plate, a static rod, a movable rod, a movable contact, a static contact, and a bellows. The movable cover plate and the static cover plate are respectively arranged at both ends of the porcelain shell. One end of the movable rod and the static rod respectively extends into the porcelain shell after passing through the movable cover plate and the static cover plate, and movable contacts and static contacts are respectively arranged at one end of the movable rod and the static rod extending into the porcelain shell. And a bellows is arranged between the movable rod and the movable cover plate. It has the following characteristics: it also includes a plurality of ceramic columns. The outer edges of the movable cover plate and the static cover plate both extend towards the outside of the porcelain shell to form a movable connecting flange and a static connecting flange, and a plurality of first connecting parts are arranged on both the movable connecting flange and the static connecting flange. And along the axial direction of the porcelain shell, the first connecting parts on the movable connecting flange and the static connecting flange are in one-to-one correspondence. A plurality of ceramic columns are arranged parallel to the porcelain shell and are all arranged between the movable connecting flange and the static connecting flange. And both ends of a ceramic column respectively correspond to two opposite first connecting parts. And both ends of the ceramic column are provided with second connecting parts and are respectively detachably connected to the corresponding two first connecting parts.

[0007] In the above-mentioned vacuum interrupter that is easy to disassemble and assemble, the first connecting part is a connecting hole, and the second connecting part is a stud. One end of the stud is a fitting end and is pre-installed at both ends of the ceramic column. The threaded end of the stud extends towards the extension direction of the ceramic column. And the threaded ends of the studs at both ends of the ceramic column are respectively inserted into the connecting holes on the movable connecting flange and the static connecting flange and are locked by nuts.

[0008] In the above-mentioned vacuum interrupter that is easy to disassemble and assemble, bayonet slots are opened at both ends of the ceramic column. The fitting end of the stud is a chuck corresponding to the bayonet slot, and the chuck and the bayonet slot are detachably connected.

[0009] The above-mentioned vacuum interrupter that is easy to disassemble and assemble, wherein the bayonet includes a clamping groove and a stop block. The clamping groove is arranged along the axial direction of the ceramic column, and one end of the clamping groove penetrates through the end face of the corresponding end of the ceramic column. A stop block is provided in the clamping groove at the port of the end where the clamping groove penetrates through the end face of the ceramic column. The chuck is a structure protruding from the outer wall of the stud. When the stud is installed at the end of the ceramic column, the chuck is snapped into the clamping groove and blocked by the stop block.

[0010] The above-mentioned vacuum interrupter that is easy to disassemble and assemble, wherein the first connecting portion is a convex block, and the convex block is arranged on the opposite sides of the moving connecting flange and the static connecting flange. The second connecting portion is a clamping leg, and the clamping leg protrudes towards the ceramic column side. When the ceramic column is arranged between the moving connecting flange and the static connecting flange, the clamping legs at both ends of the ceramic column are respectively snap-connected to the convex blocks on the moving connecting flange and the static connecting flange.

[0011] The above-mentioned vacuum interrupter that is easy to disassemble and assemble, wherein a limiting hole is opened on the end face of the protruding end of each convex block, and a limiting block corresponding to the limiting hole is provided on each clamping leg. When the clamping leg is snap-connected to the convex block, the limiting block is located in the limiting hole.

[0012] The above-mentioned vacuum interrupter that is easy to disassemble and assemble, wherein each ceramic column is divided into two adjusting columns, and the two adjusting columns are arranged end to end. A length adjusting structure is provided between the two adjusting columns. The length adjusting structure includes a connecting cylinder and two lead screws. The two lead screws respectively correspond to the two adjusting columns and are located at the opposite ends of the two adjusting columns. The lead screws are arranged along the extension direction of the adjusting columns, and the ends of the lead screws are embedded in the corresponding adjusting columns. The connecting cylinder is arranged between the two lead screws and is respectively thread-connected to the two lead screws at both ends. At the same time, the threads of the two lead screws are arranged in opposite states.

[0013] The above-mentioned vacuum interrupter that is easy to disassemble and assemble, wherein sealing grooves are opened on the end faces at both ends of the porcelain shell. At the same time, a sealing gasket is provided in the sealing groove, and the moving cover plate and the static cover plate respectively press against the sealing gasket at the corresponding end of the porcelain shell.

[0014] The above-mentioned vacuum interrupter that is easy to disassemble and assemble, wherein an air extraction hole communicating with the inner cavity of the porcelain shell is further provided on the static cover plate, and a plug is provided in the air extraction hole.

[0015] The above-mentioned vacuum interrupter that is easy to disassemble and assemble, further includes a spirit level. Two spirit levels are provided on one of the moving cover plate and / or the static cover plate, and the two spirit levels are arranged perpendicular to each other on the corresponding moving cover plate or static cover plate.

[0016] The positive effects of the above technical solutions are:

[0017] The above-mentioned easily disassembled and assembled vacuum interrupter forms a movable connection flange and a static connection flange by arranging a movable cover plate and a static cover plate at both ends of the porcelain shell and extending their outer edges towards the outside of the porcelain shell. A first connection part is arranged on the movable connection flange and the static connection flange. At the same time, a ceramic column is arranged axially along the porcelain shell between the movable connection flange and the static connection flange. Second connection parts corresponding to the first connection part are arranged at both ends of the ceramic column, and the first connection part and the second connection part are detachably connected. When the first connection part and the second connection part are connected, the movable cover plate and the static cover plate can be pressed against both ends of the porcelain shell, and when the first connection part and the second connection part are separated, the movable cover plate and the static cover plate can be disassembled at both ends of the porcelain shell, so as to realize the replacement and maintenance of vulnerable parts, meet the use requirements of easy disassembly and assembly, and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. is a structural diagram of an embodiment of an easily disassembled and assembled vacuum interrupter of the present invention;

[0019] Figure 2 FIG. is a schematic structural diagram of a first connection part and a second connection part of a type in a preferred embodiment of the present invention;

[0020] Figure 3 FIG. is a schematic structural diagram of a first connection part and a second connection part of another type in a preferred embodiment of the present invention;

[0021] Figure 4 FIG. is a schematic structural diagram of a ceramic column with a length adjustment structure installed in a preferred embodiment of the present invention.

[0022] In the drawings: 1, porcelain shell; 11, sealing groove; 12, sealing gasket; 2, movable cover plate; 21, movable connection flange; 211, first connection part; 2111, limiting hole; 3, static cover plate; 31, static connection flange; 32, air extraction hole; 4, static rod; 5, movable rod; 51, movable contact; 6, static contact; 7, bellows; 8, ceramic column; 81, second connection part; 82, bayonet; 83, length adjustment structure; 811, stud; 812, clamping foot; 821, clamping groove; 822, stop block; 831, connecting cylinder; 832, lead screw; 8111, chuck; 8121, limiting block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the technical means, creative features, achieved purposes and effects realized by the present invention easy to understand, the following embodiments are combined with the attached Figure 1 to the attached Figure 4 to specifically describe the technical solutions provided by the present invention, but the following content is not a limitation of the present invention.

[0024] Figure 1The figure is a structural diagram of an embodiment of a vacuum interrupter that is easy to disassemble and assemble according to the present utility model. As Figure 1 shown, the vacuum interrupter that is easy to disassemble and assemble provided in this embodiment includes: a porcelain shell 1, a moving cover plate 2, a static cover plate 3, a static rod 4, a moving rod 5, a moving contact 51, a static contact 6, a bellows 7, and a ceramic column 8. At this time, like a traditional vacuum interrupter, the moving cover plate 2 and the static cover plate 3 are respectively arranged at both ends of the porcelain shell 1. At the same time, one ends of the moving rod 5 and the static rod 4 respectively pass through the moving cover plate 2 and the static cover plate 3 and extend into the porcelain shell 1. And the static rod 4 is fixedly connected to the static cover plate 3. And a bellows 7 is arranged between the moving rod 5 and the moving cover plate 2, which can not only meet the sealing requirements but also adapt to the adjustment requirements of the moving rod 5. In addition, moving contacts 51 and static contacts 6 are respectively arranged at the ends of the moving rod 5 and the static rod 4 extending into the porcelain shell 1. The relative position relationship between the moving contact 51 and the static contact 6 is adjusted by the movement of the moving rod 5, so as to realize the conduction and cut-off of the circuit and meet the use requirements.

[0025] Specifically, the outer edges of the moving cover plate 2 and the static cover plate 3 both extend towards the outside of the porcelain shell 1, that is, the moving cover plate 2 and the static cover plate 3 form a moving connection flange 21 and a static connection flange 31 through their outwardly extending parts, expanding the connection area of the moving cover plate 2 and the static cover plate 3 and providing conditions for subsequent connection with the ceramic column 8. And a number of first connection parts 211 are arranged on both the moving connection flange 21 and the static connection flange 31. At this time, along the axial direction of the porcelain shell 1, the first connection parts 211 on the moving connection flange 21 and the static connection flange 31 are in one-to-one correspondence, that is, a first connection part 211 on the moving connection flange 21 can correspond to a first connection part 211 on the static connection flange 31, providing conditions for subsequent connection with both ends of the ceramic column 8 respectively. In addition, a number of ceramic columns 8 are arranged parallel to the axial direction of the porcelain shell 1, and a number of ceramic columns 8 are all arranged between the moving connection flange 21 and the static connection flange 31, facilitating the subsequent connection of both ends of the ceramic column 8 with the moving connection flange 21 and the static connection flange 31 respectively. In addition, both ends of each ceramic column 8 respectively correspond to two opposite first connection parts 211, and second connection parts 81 are arranged at both ends of the ceramic column 8. During installation, the second connection parts 81 at both ends of the ceramic column 8 are respectively detachably connected to the two opposite first connection parts 211 on the moving connection flange 21 and the static connection flange 31. When the first connection part 211 and the second connection part 81 are connected, the moving cover plate 2 and the static cover plate 3 can be pressed against both ends of the porcelain shell 1 to meet the normal use requirements of the vacuum interrupter. And when the first connection part 211 and the second connection part 81 are disassembled, the moving cover plate 2 and the static cover plate 3 are no longer restricted, so that it is convenient to remove both ends of the porcelain shell 1, facilitating the replacement and maintenance of the vulnerable parts inside the porcelain shell 1. The disassembly and assembly are more convenient, reducing the cost. In addition, insulation can be realized through the ceramic column 8, avoiding the problem of circuit connection between the moving cover plate 2 and the static cover plate 3 after installation, and the safety guarantee is higher.

[0026] Figure 2 This is a schematic structural diagram of a type of first connection part and second connection part according to a preferred embodiment of the present invention. As Figure 1 and Figure 2 shown, the first connection part 211 provided on the movable connection flange 21 and the static connection flange 31 is a connection hole. At this time, the second connection parts 81 at both ends of the ceramic column 8 are set as studs 811. During installation, first set one end of the stud 811 as the fitting end, and pre-install the fitting end of the stud 811 at both ends of the ceramic column 8 to realize the connection of the stud 811 on the ceramic column 8. At the same time, extend the threaded end of the stud 811 in the direction of the extension line of the ceramic column 8 to facilitate the connection of the stud 811 with the two first connection parts 211, that is, the threaded ends of the studs 811 at both ends of the ceramic column 8 are respectively inserted into the connection holes on the movable connection flange 21 and the static connection flange 31, and a nut is screwed on the threaded end of the stud 811. By pressing the corresponding movable connection flange 21 and static connection flange 31 with the nut, the movable cover plate 2 and the static cover plate 3 are pulled towards each other, and the movable cover plate 2 and the static cover plate 3 are stably pressed at both ends of the porcelain shell 1, meeting the installation requirements of the movable cover plate 2 and the static cover plate 3 at both ends of the porcelain shell 1. And by tightening and loosening the nut, the connection and disconnection of the stud 811 and the connection hole are realized, so as to realize the disassembly and assembly of the first connection part 211 and the second connection part 81. The disassembly and assembly are convenient and facilitate the replacement and maintenance of the vacuum interrupter.

[0027] More specifically, bayonets 82 are provided at both ends of the ceramic column 8. At this time, the fitting end of the stud 811 is set as a chuck 8111 corresponding to the bayonet 82. When the stud 811 is pre-installed at both ends of the ceramic column 8, it is realized through the detachable connection between the chuck 8111 and the bayonet 82, which facilitates the installation of the stud 811 on the ceramic column 8 and the structural design is more reasonable.

[0028] More specifically, the bayonet 82 provided on the ceramic column 8 further includes a slot 821 and a stop block 822. At this time, the slot 821 is arranged along the axial direction of the ceramic column 8, so that the slot 821 has a certain length. At the same time, one end of the slot 821 penetrates the end face of the corresponding end of the ceramic column 8, facilitating the subsequent stud 811 to extend along the extension line of the ceramic column 8 after protruding from the slot 821. And, a stop block 822 is provided at the port of the slot 821 inside the slot 821 and at the end where the slot 821 penetrates the end face of the ceramic column 8, that is, a reduced opening structure is formed at the port of the end where the slot 821 penetrates the end face of the ceramic column 8 through the stop block 822. At this time, the chuck 8111 is set to a structure protruding from the outer wall of the stud 811, that is, the size of the chuck 8111 is larger than the size of the threaded end of the stud 811. And when the stud 811 is installed on the end of the ceramic column 8, the chuck 8111 is snapped into the slot 821 and resisted by the stop block 822. Through the cooperation of the chuck 8111 and the slot 821 and being restricted by the stop block 822, the stud 811 is prevented from coming out along the extension direction of the ceramic column 8. The structure is reliable and flexible, facilitating disassembly and assembly.

[0029] In addition, this embodiment also provides a connection structure of another type between the first connection portion 211 and the second connection portion 81. Figure 3 It is a schematic structural diagram of another type of first connection portion and second connection portion of a preferred embodiment of the present invention. As Figure 1 and Figure 3 shown, the first connection portion 211 is set as a convex block. At the same time, the convex block is provided on the opposite sides of the movable connection flange 21 and the static connection flange 31, that is, a raised structure is formed at the corresponding positions on the movable connection flange 21 and the static connection flange 31 through the convex block, enhancing the structural strength of the corresponding positions on the movable connection flange 21 and the static connection flange 31. At this time, the second connection portion 81 is set as a clamping leg 812, and the clamping leg 812 protrudes towards the ceramic column 8, that is, a matching structure is formed on one side of both ends of the ceramic column 8 through the clamping leg 812. During installation, when the ceramic column 8 is arranged between the movable connection flange 21 and the static connection flange 31, the clamping legs 812 at both ends of the ceramic column 8 can be respectively clamped and connected with the convex blocks on the movable connection flange 21 and the static connection flange 31 to achieve quick disassembly and connection of the clamping leg 812 and the convex block. When in use, the two clamping legs 812 can press the two corresponding convex blocks on the movable connection flange 21 and the static connection flange 31, thereby pressing the movable cover plate 2 and the static cover plate 3 against both ends of the porcelain shell 1. And after the clamping leg 812 is withdrawn from the convex block in the reverse direction, the movable cover plate 2 and the static cover plate 3 are loosened, facilitating the movable cover plate 2 and the static cover plate 3 to be detached from the porcelain shell 1, facilitating replacement and maintenance, and also facilitating disassembly and assembly, reducing costs.

[0030] More specifically, a limiting hole 2111 is formed in the end face of the protruding end of each bump. At this time, a limiting block 8121 corresponding to the limiting hole 2111 is arranged on each clamping leg 812. That is, when the clamping leg 812 is clamped with the bump, the limiting block 8121 can be clamped into the limiting hole 2111 to prevent the clamping leg 812 from detaching from the cooperating bump, improving the reliability and stability when the clamping leg 812 and the bump are clamped, and the structural design is more reasonable.

[0031] Figure 4 The structural schematic diagram of the ceramic column equipped with the length adjustment structure according to a preferred embodiment of the present invention. As Figure 1 and Figure 4 shown, each ceramic column 8 is divided into two adjustment columns, realizing the segmented arrangement of the ceramic column 8. At this time, the two adjustment columns are arranged end to end. At the same time, a length adjustment structure 83 is arranged between the two adjustment columns, that is, the two adjustment columns are connected by the length adjustment structure 83, and at the same time, the distance between the two adjustment columns is adjusted through the length adjustment structure 83, so as to realize the adjustment of the overall length of the ceramic column 8, thereby adjusting the pressure of the moving cover plate 2 and the static cover plate 3 pressing on both ends of the porcelain shell 1 to meet different installation requirements. In addition, the length adjustment structure 83 further includes a connecting cylinder 831 and two lead screws 832. At this time, the two lead screws 832 correspond to the two adjustment columns respectively, and the two lead screws 832 are respectively located at the opposite ends of the two adjustment columns. At the same time, each lead screw 832 is arranged along the extension direction of the adjustment column, also realizing the end-to-end arrangement of the two lead screws 832. In addition, the end of the lead screw 832 is embedded in the corresponding adjustment column to improve the connection stability between the lead screw 832 and the corresponding adjustment column. And the connecting cylinder 831 is arranged between the two lead screws 832 and is respectively threadedly connected to the two lead screws 832 at both ends. At the same time, the threads of the two lead screws 832 are arranged in opposite states. Preferably, a tool plane for cooperating with a wrench or the like is arranged on the outer wall of the connecting cylinder 831, so that the operator can tighten or loosen the two lead screws 832 by rotating the connecting cylinder 831, and the operation is more convenient, which is also beneficial to the disassembly and assembly of the vacuum interrupter.

[0032] More specifically, sealing grooves 11 are formed in the end faces of both ends of the porcelain shell 1. At the same time, sealing gaskets 12 are arranged in the sealing grooves 11. When the moving cover plate 2 and the static cover plate 3 are subsequently installed at both ends of the porcelain shell 1, the moving cover plate 2 and the static cover plate 3 can respectively abut against the sealing gaskets 12 at the corresponding ends of the porcelain shell 1, realizing the sealing performance when the moving cover plate 2 and the static cover plate 3 are installed on the porcelain shell 1, making the airtightness of the interrupter better and the vacuum degree higher.

[0033] More specifically, an air extraction hole 32 communicating with the inner cavity of the porcelain shell 1 is further provided on the static cover plate 3. At the same time, a plug is provided in the air extraction hole 32, so that the movable cover plate 2 and the static cover plate 3 can be opened later to replace and maintain their vulnerable parts. After the movable cover plate 2 and the static cover plate 3 are installed at both ends of the porcelain shell 1, the air extraction device can perform a vacuum pumping operation on the inner cavity of the porcelain shell 1 through the air extraction hole 32, and the air extraction hole 32 can be sealed by the plug after vacuum pumping to meet the use requirements.

[0034] More specifically, two spirit levels are further provided on one of the movable cover plate 2 and / or the static cover plate 3. At this time, the two spirit levels are arranged perpendicular to each other on the corresponding movable cover plate 2 or static cover plate 3, and the inclination of the installation of the movable cover plate 2 and the static cover plate 3 can be monitored by the spirit levels when they are disassembled and then assembled, so as to adjust the connection tightness of different first connection parts 211 and the corresponding second connection parts 81, ensure that the forces on each part of the movable cover plate 2 and the static cover plate 3 are consistent, and provide conditions for ensuring airtightness.

[0035] The easily disassembled and assembled vacuum interrupter provided in this embodiment includes a porcelain shell 1, a movable cover plate 2, a static cover plate 3, a static rod 4, a movable rod 5, a movable contact 51, a static contact 6, a corrugated pipe 7, and a ceramic column 8; by respectively arranging the movable cover plate 2 and the static cover plate 3 at both ends of the porcelain shell 1 and extending their outer edges to the outside of the porcelain shell 1 to form a movable connection flange 21 and a static connection flange 31, and a first connection part 211 is provided on the movable connection flange 21 and the static connection flange 31. At the same time, a ceramic column 8 is arranged between the movable connection flange 21 and the static connection flange 31 along the axial direction of the porcelain shell 1, and second connection parts 81 corresponding to the first connection part 211 are provided at both ends of the ceramic column 8, and the first connection part 211 and the second connection part 81 are detachably connected, so that the movable connection flange 21 and the static connection flange 31 can be pulled or loosened by the ceramic column 8, realizing the pressing or relaxation of the movable cover plate 2 and the static cover plate 3 on the porcelain shell 1, thus facilitating the replacement and maintenance of the vulnerable parts in the vacuum interrupter, with convenient disassembly and assembly and low cost.

[0036] The above is only a preferred embodiment of the present invention, and does not limit the implementation manner and protection scope of the present invention. For those skilled in the art, it should be realized that all equivalent replacements and obvious changes made by using the description and drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. An easily disassembled vacuum interrupter, comprising a porcelain shell, a movable cover plate, a static cover plate, a static rod, a movable rod, a movable contact, a static contact and a bellows, wherein the movable cover plate and the static cover plate are respectively arranged at both ends of the porcelain shell, one end of the movable rod and the static rod respectively pass through the movable cover plate and the static cover plate and extend into the porcelain shell, and the movable contact and the static contact are respectively arranged on one end of the movable rod and the static rod extending into the porcelain shell, and the bellows is arranged between the movable rod and the movable cover plate, characterized in that: It also includes a plurality of ceramic columns, the outer edges of the dynamic cover plate and the static cover plate extend toward the outside of the ceramic shell to form a dynamic connecting flange and a static connecting flange, and a plurality of first connecting parts are arranged on the dynamic connecting flange and the static connecting flange, and along the axial direction of the ceramic shell, the first connecting parts on the dynamic connecting flange and the static connecting flange are opposite to each other, a plurality of ceramic columns are arranged parallel to the ceramic shell and are arranged between the dynamic connecting flange and the static connecting flange, and the two ends of a ceramic column respectively correspond to the two opposite first connecting parts, and the second connecting parts are arranged on both ends of the ceramic column and are detachably connected to the corresponding two first connecting parts.

2. The easily detachable vacuum interrupter according to claim 1, characterized in that: The first connection part is a connection hole, the second connection part is a stud, one end of the stud is a fitting end and is pre-installed on both ends of the ceramic column, the threaded end of the stud extends toward the extension line direction of the ceramic column, and the threaded ends of the studs at both ends of the ceramic column are respectively inserted into the connection holes on the dynamic connection flange and the static connection flange and are locked by nuts.

3. The easily detachable vacuum interrupter according to claim 2, characterized in that: Both ends of the ceramic column are provided with bayonet holes, the engaging end of the stud is a clamping head corresponding to the bayonet hole, and the clamping head and the bayonet hole are detachably connected.

4. The easily detachable vacuum interrupter according to claim 3, characterized in that: The bayonet includes a slot and a stopper, the slot is arranged along the axial direction of the ceramic column, and one end of the slot passes through the end face of the corresponding end of the ceramic column, and the stopper is provided at the port in the slot and at the end where the slot passes through the end face of the ceramic column, the clamp head is a structure protruding from the outer wall of the stud, and when the stud is installed on the end of the ceramic column, the clamp head is inserted into the slot and blocked by the stopper.

5. The easily detachable vacuum interrupter according to claim 1, characterized in that: The first connecting portion is a protrusion, which is arranged on the side opposite to the dynamic connecting flange and the static connecting flange. The second connecting portion is a clamping foot, which is arranged to protrude to one side of the ceramic column. When the ceramic column is arranged between the dynamic connecting flange and the static connecting flange, the clamping feet at both ends of the ceramic column are respectively clamped and connected with the protrusions on the dynamic connecting flange and the static connecting flange.

6. The easily detachable vacuum interrupter according to claim 5, characterized in that: A limiting hole is provided on the end surface of the protruding end of each of the protruding blocks, and a limiting block corresponding to the limiting hole is provided on each of the clamping feet. When the clamping feet are clamped with the protruding blocks, the limiting block is located in the limiting hole.

7. The easily detachable vacuum interrupter according to claim 1, characterized in that: Each of the ceramic columns is divided into two sections of adjustment columns, and the two sections of the adjustment columns are arranged end to end. A length adjustment structure is arranged between the two sections of the adjustment columns, and the length adjustment structure includes a connecting tube and two screw rods. The two screw rods correspond to the two adjustment columns respectively and are located on the opposite ends of the two adjustment columns, and the screw rods are arranged along the extension direction of the adjustment column. The ends of the screw rods are pre-buried in the corresponding adjustment columns, and the connecting tube is arranged between the two screw rods and the two ends are respectively threadedly connected to the two screw rods. At the same time, the threads of the two screw rods are arranged in opposite states.

8. The easily detachable vacuum interrupter according to claim 1, characterized in that: Sealing grooves are provided on the end surfaces at both ends of the ceramic shell. Meanwhile, sealing gaskets are arranged in the sealing grooves. The moving cover plate and the static cover plate are respectively pressed against the sealing gaskets at the corresponding ends of the ceramic shell.

9. The easily detachable vacuum interrupter according to claim 1, characterized in that: The static cover plate is also provided with an air extraction hole communicating with the inner cavity of the ceramic shell, and a plug is provided in the air extraction hole.

10. The easily detachable vacuum interrupter according to claim 1, characterized in that: It also includes a level. Two levels are provided on one of the moving cover plates and / or one of the static cover plates, and the two levels are arranged in a mutually perpendicular state on the corresponding moving cover plates or static cover plates.

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