A horizontally movable ultra-high voltage vacuum arc-extinguishing chamber and a method of using the same

Abstract

The application relates to a horizontally-movable ultrahigh-voltage vacuum arc-extinguishing chamber and a use method thereof, which comprises a shell, static end covers and dynamic end covers are fixedly connected to two ends of the shell respectively, a dynamic conducting rod is slidably arranged on the dynamic end cover, a bellows is sleeved on the dynamic conducting rod, one end of the bellows is fixedly connected with the dynamic end cover, the other end of the bellows is fixedly connected with the dynamic conducting rod and is covered with a bellows shielding cover, an inner guide sleeve is further sleeved on the dynamic conducting rod, the inner guide sleeve is located between the bellows and the dynamic conducting rod, the inner guide sleeve is fixedly connected with the dynamic end cover and is slidably connected with the dynamic conducting rod, an outer guide sleeve is sleeved on the bellows, one end of the outer guide sleeve is fixedly connected with the dynamic end cover, the other end of the outer guide sleeve is inserted into the bellows shielding cover and is slidably connected with the bellows shielding cover. The inner guide sleeve and the outer guide sleeve provide two-way support for the dynamic conducting rod, the support strength of the dynamic conducting rod is enhanced, the movement stability of the dynamic conducting rod is ensured, and the dynamic contact and the static contact can be accurately centered and connected.

Description

Technical Field

[0001] This invention relates to the field of vacuum interrupter technology, specifically to an ultra-high voltage vacuum interrupter that can move horizontally and its usage method. Background Technology

[0002] The increase in operating voltage will inevitably lead to an increase in the volume of the vacuum interrupter, as well as an increase in the moving mass. Furthermore, the operating environment must allow the vacuum interrupter to be arranged horizontally, which places higher demands on the horizontal movement of the moving end of the vacuum interrupter. In order to ensure the stability of the horizontal movement of the moving end, higher requirements are placed on the guiding structure of the interrupter.

[0003] Patent CN204375640U discloses a vacuum interrupter with a retaining ring guide sleeve. The key technical feature is that a skeleton is encased within the guide sleeve. The skeleton has a circular cross-section and is coaxially aligned with the guide sleeve. By placing the skeleton within the guide sleeve before injection molding, the guide sleeve completely covers the skeleton after injection molding. The stress generated during the molding process is reduced or even eliminated by the shaping effect of the skeleton, significantly reducing the deformation of the guide sleeve and improving its yield rate. This, in turn, helps control the fitting accuracy between the guide sleeve and the conductive rod.

[0004] This patent enhances the stability of the moving conductive rod by strengthening the guide sleeve structure and reducing deformation. However, since the guide sleeve is fixed inside the lower end cover, it can only support the moving conductive rod portion outside the ceramic shell 1, leaving the moving conductive rod portion inside the shell suspended. Existing vacuum interrupters require horizontal placement; when the moving conductive rod moves horizontally, the portion inside the shell, lacking support, is still at risk of tilting and sagging under its own weight and the gravity of the moving contact, affecting the alignment of the moving and stationary contacts and thus impacting operational stability. Furthermore, tilting can damage the bellows. Furthermore, this patent lacks a structure to limit the movement of the conductive rod. The conductive rod can rotate freely in the circumferential direction within the guide sleeve, which also poses a risk of twisting the bellows. Once the bellows is twisted, its service life will be significantly shortened. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by providing a horizontally movable ultra-high voltage vacuum interrupter and its usage method. It improves the support strength of the moving conductive rod, enhances the stability of the moving conductive rod's movement, ensures accurate alignment between the moving and stationary contacts, and prevents the moving conductive rod from rotating, thus guaranteeing the quality of the bellows.

[0006] This invention is achieved through the following technical solution: a horizontally movable ultra-high voltage vacuum interrupter includes a shell, with a stationary end cover and a moving end cover fixedly connected to both ends of the shell. A stationary conductive rod is fixedly connected to the stationary end cover, and a stationary contact is fixedly connected to one end of the stationary conductive rod inside the shell. A moving conductive rod is slidably inserted through the moving end cover, and a moving contact is fixedly connected to one end of the moving conductive rod inside the shell. A bellows is sleeved on the moving conductive rod, located inside the shell. One end of the bellows is fixedly connected to the moving end cover, and the other end is fixedly connected to the moving conductive rod and covered by a bellows shield. The bellows shield is fixedly connected to the moving conductive rod. An inner guide sleeve is also sleeved on the moving conductive rod, located between the bellows and the moving conductive rod. The inner guide sleeve is fixedly connected to the moving end cover and slidably connected to the moving conductive rod. An outer guide sleeve is sleeved on the bellows, with one end fixedly connected to the moving end cover and the other end inserted into the bellows shield and slidably connected to the bellows shield.

[0007] This design provides internal axial support to the moving conductive rod through an inner guide sleeve, and indirectly provides external axial support to the moving conductive rod through the sliding connection between the outer guide sleeve and the bellows shield. These two layers of support significantly enhance the support strength of the moving conductive rod, preventing it from tilting downwards under gravity and ensuring its linear trajectory. This also ensures the stability of the moving conductive rod's movement, thereby guaranteeing accurate alignment and connection between the moving and stationary contacts.

[0008] As an optimization, the length of the inner guide sleeve is 1 / 3 to 2 / 3 of the bellows length. This optimization scheme, by limiting the length of the inner guide sleeve, ensures that the moving conductive rod has sufficient sliding distance margin.

[0009] As an optimization, the length of the outer guide sleeve is greater than the length of the inner guide sleeve. This optimization scheme makes the length of the outer support greater than the length of the inner support, thereby improving the support strength.

[0010] As an optimization, an annular cavity is formed between the bellows shield and the bellows for the insertion of the outer guide sleeve. The length of the annular cavity is 1 / 3 to 1 / 2 of the length of the bellows. This optimization ensures sufficient sliding margin between the outer guide sleeve and the bellows shield.

[0011] As an optimization, a first guide ring is fixed on the outer wall of one end of the outer guide sleeve inside the bellows shield, and the circumferential outer wall of the first guide ring fits against the circumferential inner wall of the bellows shield. In this optimized solution, the outer guide sleeve slides with the bellows shield through the first guide ring, and the sliding stability of the two is ensured by the auxiliary guidance of the first guide ring.

[0012] As an optimization, a second guide ring is fixed at both ends of the inner wall of the inner guide sleeve, and the circumferential inner wall of the second guide ring is in contact with the circumferential outer wall of the moving conductive rod. This optimized solution provides guidance for the moving conductive rod through the second guide ring, ensuring the sliding stability of the inner guide sleeve and the moving conductive rod.

[0013] As an optimization, the outer wall of the moving conductive rod is provided with a milled flat structure that mates with the inner wall of the second guide ring, and an anti-rotation key that mates with the milled flat structure is provided on the inner diameter of the inner wall of the second guide ring. In this optimized solution, the second guide ring, through the anti-rotation key, mates with the milled flat structure of the moving conductive rod to prevent the moving conductive rod from rotating during sliding, thereby avoiding damage to the bellows.

[0014] As an optimization, the housing includes two ceramic shells and a shielding cylinder. The two ceramic shells are arranged opposite each other along the axial direction. The stationary end cap and the moving end cap are respectively fixed to opposite ends of the two ceramic shells. The shielding cylinder is fixed between the two ceramic shells, and the stationary contact and the moving contact are connected to each other inside the shielding cylinder. This optimized housing adopts a split structure, which is convenient for disassembly and assembly. The main shielding cover is formed by connecting the two ceramic shells and the shielding cylinder. Compared with the prior art, the installation of the shielding cylinder is more convenient.

[0015] As an optimization, a stationary end shield is fixedly connected to the connection between the stationary end cover and the ceramic shell, a moving end shield is fixedly connected to the connection between the moving end cover and the ceramic shell, and shielding cylinder shields are fixedly connected to the connection between both ends of the shielding cylinder and the ceramic shell. This optimized solution uses shields at each connection point to shield the electric field, improving the stability of the electric field in the arc-extinguishing chamber.

[0016] A method of using the above-mentioned horizontally movable ultra-high voltage vacuum interrupter includes the following steps: The moving conductive rod is driven to slide axially into the housing by an external operating mechanism, so that the moving contact and the stationary contact are connected inside the shielding cylinder. During the sliding process of the moving conductive rod, the inner guide sleeve provides internal axial support for the moving conductive rod, thereby preventing the moving conductive rod from tilting downwards due to gravity and ensuring the straight trajectory of the moving conductive rod. The second guide rings at both ends of the inner guide sleeve provide guidance and limit for the moving conductive rod. The second guide rings cooperate with the milled flat structure of the moving conductive rod through the anti-rotation key to prevent the moving conductive rod from rotating during the sliding process, thereby avoiding damage to the bellows. The sliding of the moving conductive rod drives the bellows shield to move synchronously. The bellows shield slides axially along the outer guide sleeve, so that the outer guide sleeve provides external axial support for the moving conductive rod, further improving the movement stability of the moving conductive rod, thereby ensuring accurate alignment and docking of the moving contact and the stationary contact.

[0017] The beneficial effects of this invention are as follows: the inner guide sleeve provides internal axial support for the moving conductive rod, and the outer guide sleeve, through sliding contact with the bellows shield, indirectly provides external axial support for the moving conductive rod. These two supports greatly enhance the support strength of the moving conductive rod, preventing it from tilting downwards under gravity and ensuring its linear trajectory. This also ensures the stability of the moving conductive rod's movement, thereby guaranteeing accurate alignment and docking of the moving and stationary contacts. The second guide ring of the inner guide sleeve cooperates with the milled flat structure of the moving conductive rod through the anti-rotation key to prevent the moving conductive rod from rotating during sliding, thereby avoiding damage to the bellows; The housing adopts a split structure, which is convenient for disassembly and assembly. The main shield is formed by connecting two ceramic shells with the shielding cylinder. Compared with the existing technology, the shielding cylinder is easier to install. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the present invention; Figure 2 for Figure 1 Enlarged view of part A; Figure 3 This is a front view of the second guide ring; Figure 4 A schematic diagram of the three-dimensional structure of the moving conductive rod; Figure 5 This is a sectional view of the inner guide sleeve; Figure 6 This is a sectional view of the outer guide sleeve; As shown in the figure: 1. Shell, 11. Ceramic shell, 12. Shielding cylinder, 121. Shielding cylinder shielding cover, 2. Stationary end cover, 21. Moving end shielding cover, 3. Moving end cover, 31. Moving end shielding cover, 32. Insertion hole, 4. Stationary conductive rod, 41. Stationary contact, 5. Moving conductive rod, 51. Moving contact, 52. Milled flat structure, 6. Bellows, 7. Inner guide sleeve, 71. Second guide ring, 711. Anti-rotation key, 72. Second annular groove, 73. Annular weight reduction groove, 74. Cylinder body, 75. Support plate, 76. Second vent hole, 8. Bellows shielding cover, 9. Outer guide sleeve, 91. First guide ring, 92. First annular groove, 93. First vent hole. Detailed Implementation

[0019] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0020] like Figures 1-6As shown, a horizontally movable ultra-high voltage vacuum interrupter includes a housing 1, with a stationary end cover 2 and a moving end cover 3 fixedly connected to both ends of the housing 1. A stationary conductive rod 4 is fixedly connected to the stationary end cover 2, and a stationary contact 41 is fixedly connected to one end of the stationary conductive rod 4 inside the housing 1. A moving conductive rod 5 is slidably inserted through the moving end cover 3, and a moving contact 51 is fixedly connected to one end of the moving conductive rod 5 inside the housing 1. A bellows 6 located inside the housing 1 is sleeved on the moving conductive rod 5. One end of the bellows 6 is fixedly connected to the moving end cover 3, and the other end of the bellows 6 is fixedly connected to the outer wall of the moving conductive rod 5 and covered by a bellows shield 8, which is fixedly connected to the moving conductive rod 5.

[0021] Specifically, the housing 1 includes two ceramic shells 11 and a shielding cylinder 12, with the two ceramic shells 11 arranged axially opposite each other. The stationary end cover 2 and the moving end cover 3 are respectively fixed to opposite ends of the two ceramic shells 11, and a stationary end shielding cover 21 is fixedly connected to the connection between the stationary end cover 2 and the ceramic shell 11, while a moving end shielding cover 31 is fixedly connected to the connection between the moving end cover 3 and the ceramic shell 11. The shielding cylinder 12 is fixed between the two ceramic shells 11, and shielding cylinder shielding covers 121 are fixedly connected to both ends of the shielding cylinder 12 at the connection points with the ceramic shells 11. The stationary contact 41 and the moving contact 51 are mated inside the shielding cylinder 12. The housing 1 adopts a split design, which is convenient for disassembly and assembly. By setting the shielding cylinder 12 between the two ceramic shells 11, the installation of the shielding cylinder 12 is more convenient than that of the prior art. The shielding cylinder 12 shields the electric field between the stationary contact 41 and the moving contact 51, and the shielding covers shield the electric field at each connection point, ensuring the stability of the electric field inside the arc-extinguishing chamber.

[0022] In this embodiment, the ceramic shell 11 is made of ceramic, while the shielding cylinder 12 and the shielding cylinder shielding cover 121 are both made of copper alloy. The ceramic shell 11, shielding cylinder 12, and shielding cylinder shielding cover 121 are connected by bolts for a detachable and fixed connection. The moving end cover 3 and the stationary end cover 2 are both made of stainless steel, while the moving end shielding cover 31 and the stationary end shielding cover 21 are both made of copper alloy. The moving end cover 3, the moving end shielding cover 31, and the ceramic shell 11 are connected by bolts for a detachable and fixed connection. The stationary end cover 2, the stationary end shielding cover 21, and the ceramic shell 11 are also connected by bolts for a detachable and fixed connection.

[0023] In this embodiment, both the moving conductive rod 5 and the moving contact 51 are made of copper alloy, and they are integrally formed. Both the stationary conductive rod 4 and the stationary contact 41 are made of copper alloy, and they are integrally formed.

[0024] The stationary conductive rod 4 and the moving conductive rod 5 are coaxially arranged, and the stationary conductive rod 4 is not necessarily fixed to the stationary end cover 2 by welding. The stationary contact 41 is located inside the shielding cylinder 12. The moving conductive rod 5 can be driven to slide horizontally along the axial direction by an external operating mechanism, so that the moving contact 51 moves into the shielding cylinder 12 and docks with the stationary contact 41, thereby realizing the circuit conduction. The external operating mechanism is a linear drive mechanism, which is a conventional structure of existing ultra-high voltage switches, and will not be described in detail here.

[0025] To enhance the stability of the moving conductive rod 5 during sliding and ensure accurate alignment of the moving contact 511 and the stationary contact 4, an inner guide sleeve 7 is fitted onto the moving conductive rod 5. The inner guide sleeve 7 is located between the bellows 6 and the moving conductive rod 5, and is fixedly connected to the moving end cover 3 and slidably connected to the moving conductive rod 5. An outer guide sleeve 9 is fitted onto the bellows 6. One end of the outer guide sleeve 9 is fixedly connected to the moving end cover 3, and the other end of the outer guide sleeve 9 is inserted into the bellows shield 8 and slidably connected to the bellows shield 8.

[0026] In this embodiment, the bellows shield 8 is made of stainless steel. The end of the bellows shield 8 away from the moving end cap 3 is flared and fixed to the outer wall of the moving conductive rod 5. The sliding of the moving conductive rod 5 can drive the extension and retraction of the bellows 6 and the movement of the bellows shield 8. An annular cavity is formed between the bellows shield 8 and the bellows 6 for the insertion of the outer guide sleeve 9. The length of the annular cavity is 1 / 3 to 1 / 2 of the length of the bellows 6 to ensure sufficient sliding margin between the outer guide sleeve 9 and the bellows shield 8.

[0027] The moving conductive rod 5, inner guide sleeve 7, bellows 6, outer guide sleeve 9, and bellows shield 8 are all coaxially arranged. The inner guide sleeve 7 provides internal axial support for the moving conductive rod 5. The outer guide sleeve 9, through its sliding contact with the bellows shield 8, indirectly provides external axial support for the moving conductive rod 5. These two layers of support significantly enhance the support strength of the moving conductive rod 5, preventing it from tilting downwards under gravity. This allows the moving conductive rod 5 to withstand the shear force caused by its own weight when horizontally arranged, ensuring its linear motion trajectory and stability. This, in turn, ensures accurate alignment and docking between the moving contact 51 and the stationary contact 41.

[0028] Specifically, the length of the inner guide sleeve 7 is 1 / 3 to 2 / 3 of the length of the bellows 6. By limiting the length of the inner guide sleeve 7, the moving conductive rod 5 has sufficient sliding margin, the bellows 6 has sufficient deformation margin, and the support effect for the moving conductive rod is ensured.

[0029] The length of the outer guide sleeve 9 is greater than the length of the inner guide sleeve 7. The external support length of the outer guide sleeve is greater than the internal support length of the inner guide sleeve, further improving the support strength.

[0030] Specifically, the outer guide sleeve 9 is fixedly provided with a first guide ring 91 on the outer wall inside the bellows shield 8. The circumferential outer wall of the first guide ring 91 is in contact with the circumferential inner wall of the bellows shield 8, and the outer guide sleeve 9 is slidably connected to the bellows shield 8 through the first guide ring 91.

[0031] In this embodiment, the outer wall of the outer guide sleeve 9 has a first annular groove 92 for accommodating the first guide ring 91, and the first guide ring 9 is embedded and fixed in the first annular groove 92. The sliding stability of the two is ensured by the auxiliary guidance of the first guide ring 9.

[0032] In this embodiment, a first vent hole 93 is also provided on the outer wall of the outer guide sleeve 9. The first vent hole 93 connects the inner cavity of the outer guide sleeve 9 with the inner cavity of the housing 1. When the moving conductive rod 5 slides, the pressure inside and outside the outer guide sleeve 9 is balanced through the first vent hole 93 to prevent abnormal operation caused by pressure imbalance.

[0033] Specifically, a second guide ring 71 is fixed at both ends of the inner wall of the inner guide sleeve 7. The circumferential inner wall of the second guide ring 71 is in contact with the circumferential outer wall of the moving conductive rod 5, and the inner guide sleeve 7 is slidably connected to the moving conductive rod 5 through the second guide ring 71. The second guide ring 71 provides guidance for the moving conductive rod 5, ensuring the sliding stability of the inner guide sleeve and the moving conductive rod.

[0034] In this embodiment, the inner wall of the inner guide sleeve 7 is provided with a second annular groove 72 for accommodating the second guide ring 71, and the second guide ring 71 is embedded and fixed in the second annular groove 72. The inner wall of the inner guide sleeve 7 is also provided with an annular weight-reducing groove 73 located between the two second annular grooves 72 to reduce the overall weight of the inner guide sleeve 7.

[0035] The outer wall of the moving conductive rod 5 is provided with a milled flat structure 52 that mates with the inner wall of the second guide ring 71. The inner wall of the second guide ring 71 is provided with an anti-rotation key 711 that mates with the milled flat structure 52. The second guide ring 71, through the anti-rotation key 711, mates with the milled flat structure 52 of the moving conductive rod 5 to prevent the moving conductive rod 5 from rotating during sliding, thereby avoiding damage to the bellows 6.

[0036] The inner guide sleeve 7 described in this embodiment includes a cylindrical body 74 sleeved on the moving conductive rod 5 and an annular support plate 75. The support plate 75 is fixedly connected to one end of the cylindrical body 74, and the support plate 75 and the cylindrical body 74 are integrally formed. The second guide ring 71 is fixedly connected to the inner wall of the cylindrical body 74. The moving end cap 3 has an insertion hole 32 for the cylindrical body 74 to pass through. The insertion hole 32 communicates with the inner cavity of the bellows 6, and the diameter of the insertion hole 32 is larger than the outer diameter of the cylindrical body 74. The cylindrical body 74 passes through the insertion hole 32 and is inserted into the bellows 6. The outer diameter of the support plate 75 is larger than the diameter of the insertion hole 32. The support plate 75 is fixedly connected to the outer wall of the moving end cap 3 and seals the insertion hole 32.

[0037] The support plate 75 has a second vent 76 that connects to the insertion hole 32, allowing the insertion hole 32 to communicate with the outside, and thus enabling the inner cavity of the bellows 6 to communicate with the outside. When the moving conductive rod 5 slides, the second vent 76 balances the internal pressure of the bellows 6, preventing abnormal operation caused by pressure imbalance.

[0038] The above-mentioned method of using the horizontally movable ultra-high voltage vacuum interrupter includes the following steps: The housing 1 is arranged horizontally, and the moving conductive rod 5 is driven to slide horizontally along the axis by an external operating mechanism, so that the moving contact 51 and the stationary contact 41 are connected inside the shielding cylinder 12. During the sliding process of the moving conductive rod 5, the inner guide sleeve 7 provides internal axial support for the moving conductive rod 5, thereby preventing the moving conductive rod from tilting downwards due to gravity and ensuring the straight trajectory of the moving conductive rod 5. The second guide rings 71 at both ends of the inner guide sleeve 7 provide guidance and limit for the moving conductive rod 5. The second guide rings 71 cooperate with the milled flat structure 52 of the moving conductive rod 5 through the anti-rotation key 711 to prevent the moving conductive rod 5 from rotating during the sliding process, thereby avoiding damage to the bellows 6. The sliding of the moving conductive rod 5 drives the bellows shield 8 to move synchronously. The bellows shield 8 slides along the outer guide sleeve 9, so that the outer guide sleeve 9 provides external axial support for the moving conductive rod 5, further improving the movement stability of the moving conductive rod 5, thereby ensuring accurate alignment and docking between the moving contact 51 and the stationary contact 41.

[0039] Of course, the above description is not limited to the examples above. Technical features not described in this invention can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solutions of this invention and are not intended to limit this invention. This invention has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this invention do not depart from the spirit of this invention and should also fall within the scope of protection of the claims of this invention.

Claims

1. A horizontally movable ultra-high voltage vacuum interrupter, comprising a shell (1), wherein a stationary end cover (2) and a moving end cover (3) are fixedly connected to both ends of the shell (1), a stationary conductive rod (4) is fixedly connected to the stationary end cover (2), a stationary contact (41) is fixedly connected to one end of the stationary conductive rod (4) located inside the shell, a moving conductive rod (5) is slidably inserted through the moving end cover (3), a moving contact (51) is fixedly connected to one end of the moving conductive rod (5) located inside the shell, a bellows (6) located inside the shell (1) is sleeved on the moving conductive rod (5), one end of the bellows (6) is fixedly connected to the moving end cover (3), and the other end is fixedly connected to the moving conductive rod (5) and covered with a bellows shield (8), the bellows shield (8) being fixedly connected to the moving conductive rod (5), characterized in that: An inner guide sleeve (7) is also fitted on the moving conductive rod (5). The inner guide sleeve (7) is located between the bellows (6) and the moving conductive rod (5). The inner guide sleeve (7) is fixedly connected to the moving end cap (3) and slidably connected to the moving conductive rod (5). A second guide ring (71) is fixedly provided at both ends of the inner wall of the inner guide sleeve (7). The circumferential inner wall of the second guide ring (71) is in contact with the circumferential outer wall of the moving conductive rod (5). The inner guide sleeve (7) includes a cylinder (74) sleeved on the moving conductive rod (5) and an annular support plate (75). The support plate (75) is fixed to one end of the cylinder (74). The moving end cap (3) has an insertion hole (32) for the cylinder (74) to pass through. The cylinder (74) passes through the insertion hole (32) and is inserted into the bellows (6). The support plate (75) and the outer wall of the moving end cap (3) are fixed and seal the insertion hole (32). The support plate (75) has a second vent hole (76) that connects to the insertion hole (32). The inner cavity of the bellows (6) is connected to the outside through the second vent hole (76). An outer guide sleeve (9) is fitted onto the corrugated pipe (6). One end of the outer guide sleeve (9) is fixedly connected to the moving end cap (3), and the other end is inserted into the corrugated pipe shield (8) and slidably connected to the corrugated pipe shield. A first guide ring (91) is fixedly provided on the outer wall of the outer guide sleeve (9) inside the corrugated pipe shield (8). The circumferential outer wall of the first guide ring is in contact with the circumferential inner wall of the corrugated pipe shield (8). The outer wall of the outer guide sleeve (9) is also provided with a first vent hole (93), which connects the inner cavity of the outer guide sleeve (9) with the inner cavity of the shell (1).

2. The horizontally movable ultra-high voltage vacuum interrupter according to claim 1, characterized in that: The length of the inner guide sleeve (7) is 1 / 3 to 2 / 3 of the length of the bellows (6).

3. The horizontally movable ultra-high voltage vacuum interrupter according to claim 1 or 2, characterized in that: The length of the outer guide sleeve (9) is greater than the length of the inner guide sleeve (7).

4. The horizontally movable ultra-high voltage vacuum interrupter according to claim 1, characterized in that: The bellows shield (8) and the bellows (6) form an annular cavity for the outer guide sleeve (9) to be inserted. The length of the annular cavity is 1 / 3 to 1 / 2 of the length of the bellows (6).

5. The horizontally movable ultra-high voltage vacuum interrupter according to claim 1, characterized in that: The outer wall of the moving conductive rod (5) is provided with a milled flat structure (52) that cooperates with the inner wall of the second guide ring (71), and the inner wall of the second guide ring (71) is provided with an anti-rotation key (711) that cooperates with the milled flat structure (52).

6. The horizontally movable ultra-high voltage vacuum interrupter according to claim 1, characterized in that: The housing (1) includes two ceramic shells (11) and a shielding cylinder (12). The two ceramic shells (11) are arranged opposite each other along the axial direction. The stationary end cap (2) and the moving end cap (3) are respectively fixed to the opposite ends of the two ceramic shells (11). The shielding cylinder (12) is fixed between the two ceramic shells (11). The stationary contact (41) and the moving contact (51) are connected to each other inside the shielding cylinder (12).

7. The horizontally movable ultra-high voltage vacuum interrupter according to claim 6, characterized in that: A stationary end shield (21) is fixedly connected to the connection between the stationary end cap (2) and the ceramic shell (11), and a moving end shield (31) is fixedly connected to the connection between the moving end cap (3) and the ceramic shell (11). Both ends of the shielding cylinder (12) are fixedly connected to the connection between the ceramic shell (11) and the shielding cylinder shield (121).

8. The method of using the horizontally movable ultra-high voltage vacuum interrupter according to any one of claims 1 to 7, characterized in that, Includes the following steps: The moving conductive rod (5) is driven to slide horizontally along the axial direction by an external operating mechanism, so that the moving contact (51) and the stationary contact (41) are connected inside the shielding cylinder (12); During the sliding process of the moving conductive rod (5), the inner guide sleeve (7) provides internal axial support for the moving conductive rod (5), thereby preventing the moving conductive rod from tilting downwards due to gravity and ensuring the straight trajectory of the moving conductive rod. The second guide rings (71) at both ends of the inner guide sleeve (7) provide guidance and limit for the moving conductive rod (5). The second guide rings (71) cooperate with the milled flat structure (52) of the moving conductive rod (5) through the anti-rotation key (711) to prevent the moving conductive rod (5) from rotating during the sliding process, thereby avoiding damage to the bellows (6). The moving conductive rod (5) slides and drives the bellows shield (8) to move synchronously. The bellows shield (8) slides axially along the outer guide sleeve (9), so that the outer guide sleeve (9) provides external axial support for the moving conductive rod (5), further improving the motion stability of the moving conductive rod (5), thereby ensuring accurate alignment and docking of the moving contact (51) and the stationary contact (41).

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