Ultrahigh-voltage vacuum arc-extinguishing chamber capable of moving horizontally and use method thereof

Abstract

The invention relates to an ultrahigh-voltage vacuum arc-extinguishing chamber capable of moving horizontally and a using method thereof.The ultrahigh-voltage vacuum arc-extinguishing chamber comprises a shell, the two ends of the shell are fixedly connected with a static end cover and a movable end cover respectively, a movable conducting rod is arranged on the movable end cover in a sliding and penetrating mode, the movable conducting rod is sleeved with a corrugated pipe, and one end of the corrugated pipe is fixedly connected with the movable end cover; one end of the movable end cover is fixedly connected with the movable end cover, the other end of the movable end cover is fixedly connected with the movable conducting rod and covered with a corrugated pipe shielding cover, and the movable conducting rod is further sleeved with an inner guide sleeve which is located between the corrugated pipe and the movable conducting rod and fixedly connected with the movable end cover and slidably connected with the movable conducting rod; the corrugated pipe is sleeved with an outer guide sleeve, one end of the outer guide sleeve is fixedly connected with the movable end cover, and the other end of the outer guide sleeve is inserted into the corrugated pipe shielding cover and is in sliding connection with the corrugated pipe shielding cover. According to the invention, the inner guide sleeve and the outer guide sleeve provide inner and outer supports for the movable conducting rod, so that the supporting strength for the movable conducting rod is enhanced, the movement stability of the movable conducting rod is ensured, and the movable contact and the static contact can be accurately centered and butted.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum interrupters, and in particular to an ultra-high voltage vacuum interrupter capable of horizontal movement and a method for using the same. Background Art

[0002] The increase in operating voltage will inevitably lead to an increase in the volume of the vacuum interrupter, and will also lead to an increase in the moving mass. In addition, the operating environment must allow the vacuum interrupter to be arranged horizontally, which puts higher requirements 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 guide structure of the interrupter.

[0003] Patent CN204375640U discloses a vacuum interrupter with a snap-ring guide sleeve. The key technical solution is a framework encased within the guide sleeve. The framework has a circular cross-section and is coaxial with the guide sleeve. The framework is placed within the guide sleeve before the guide sleeve is injection molded. This allows the molded guide sleeve to completely encase the framework. The framework's shaping action reduces or even eliminates the stress generated by the guide sleeve during the molding process, significantly minimizing deformation of the guide sleeve and improving its yield rate. This facilitates controlling the precision of the fit between the guide sleeve and the conductive rod.

[0004] This patent enhances the structural strength of the guide sleeve and reduces deformation to enhance the stability of the support for the moving conductive rod. However, since the guide sleeve is fixed to the lower end cover, it can only support the portion of the moving conductive rod outside the porcelain shell 1, and the portion of the moving conductive rod inside the shell is always suspended. The existing vacuum interrupter needs to be arranged horizontally when in use. When the moving conductive rod moves horizontally, the portion of the moving conductive rod inside the shell lacks support and is still at risk of tilting and sagging under the action of its own weight and the gravity of the moving contact, affecting the alignment of the moving and static contacts and thus affecting the stability of use. Once tilted, it will also cause damage to the bellows. Moreover, this patent lacks a structure for limiting the moving conductive rod. The moving conductive rod can rotate freely in the circumferential direction within the guide sleeve, and there is also a risk of twisting the bellows. Once the bellows is twisted, the service life of the bellows will be greatly shortened. Summary of the Invention

[0005] In response to the deficiencies in the prior art, the present invention provides an ultra-high voltage vacuum interrupter capable of horizontal movement and a method for using the same, thereby increasing the support strength for a moving conductive rod, improving the stability of the movement of the moving conductive rod, ensuring accurate alignment of the moving contact and the static contact, and preventing the moving conductive rod from rotating, thereby ensuring the quality of use of the bellows.

[0006] The present invention is achieved through the following technical solution: a horizontally movable ultra-high voltage vacuum interrupter comprises a shell, wherein both ends of the shell are fixedly provided with a static end cover and a dynamic end cover, a static conductive rod is fixedly provided on the static end cover, one end of the static conductive rod located in the shell is fixedly provided with a static contact, a dynamic conductive rod is slidably passed through the dynamic end cover, and one end of the dynamic conductive rod located in the shell is fixedly provided with a dynamic contact, a bellows located in the shell is sleeved on the dynamic conductive rod, one end of the bellows is fixedly provided with the dynamic end cover, and the other end is fixedly provided with the dynamic conductive rod and covered with a bellows shielding cover, the bellows shielding cover is fixed to the dynamic conductive rod, and the dynamic conductive rod is also sleeved with an inner guide sleeve, the inner guide sleeve is located between the bellows and the dynamic conductive rod, the inner guide sleeve is fixedly provided with the dynamic end cover and is slidably connected to the dynamic conductive rod; an outer guide sleeve is sleeved on the bellows, one end of the outer guide sleeve is fixedly provided with the dynamic end cover, and the other end is inserted into the bellows shielding cover and is slidably connected to the bellows shielding cover.

[0007] This solution provides internal axial support for the moving conductive rod through the inner guide sleeve, and indirectly provides external axial support for the moving conductive rod through the sliding connection between the outer guide sleeve and the bellows shielding cover. Through the internal and external supports, the support strength of the moving conductive rod is greatly enhanced, preventing the moving conductive rod from tilting downward due to gravity, ensuring the straight trajectory of the moving conductive rod; ensuring the movement stability of the moving conductive rod, thereby ensuring that the moving contact and the static contact can be accurately aligned and docked.

[0008] As an optimization, the length of the inner guide sleeve is 1 / 3 to 2 / 3 of the length of the bellows. This optimization solution limits the length of the inner guide sleeve so that the movable 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 solution makes the outer support length greater than the inner support length, thereby improving the support strength.

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

[0011] As an optimization, a first guide ring is fixed to the outer wall of the outer guide sleeve located at one end inside the bellows shield. The circumferential outer wall of the first guide ring is aligned with the circumferential inner wall of the bellows shield. In this optimization solution, the outer guide sleeve slides onto the bellows shield via the first guide ring, and the auxiliary guidance of the first guide ring ensures the sliding stability of the two.

[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 movable conductive rod. This optimization solution provides guidance for the movable conductive rod through the second guide ring, ensuring the sliding stability of the inner guide sleeve and the movable conductive rod.

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

[0014] As an optimization, the housing comprises two porcelain shells and a shielding cylinder. The two porcelain shells are axially opposed, with the static and dynamic end caps fixed to opposite ends of the two porcelain shells. The shielding cylinder is fixed between the two porcelain shells, and the static and dynamic contacts are connected within the shielding cylinder. This optimized housing adopts a split structure for easy assembly and disassembly. The two porcelain shells are connected to the shielding cylinder to form the main shielding cover, making the shielding cylinder easier to install than existing technologies.

[0015] As an optimization, a static end shield is fixedly attached to the connection between the static end cover and the porcelain shell, a dynamic end shield is fixedly attached to the connection between the dynamic end cover and the porcelain shell, and a shield tube and shield are fixedly attached to the connection between the two ends of the shielding tube and the porcelain shell. This optimization solution provides shielding at each connection to shield the electric field, improving the stability of the electric field in the arc extinguishing chamber.

[0016] A method for using the above-mentioned horizontally movable ultra-high voltage vacuum interrupter comprises the following steps: The external operating mechanism drives the movable conductive rod to slide axially toward the inside of the housing, so that the movable contact and the static contact are docked in 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 downward 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 guide limits for the movable conductive rod. The second guide rings cooperate with the milled flat structure of the movable conductive rod through the anti-rotation key to prevent the movable conductive rod from rotating during the sliding process, thereby avoiding twisting of 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 static contact.

[0017] The beneficial effects of the present invention are as follows: the inner guide sleeve provides internal axial support for the movable conductive rod, and the sliding connection between the outer guide sleeve and the bellows shield indirectly provides external axial support for the movable conductive rod. The two supports, the inner and outer supports, greatly enhance the support strength of the movable conductive rod, prevent the movable conductive rod from tilting downward due to gravity, and ensure the linear trajectory of the movable conductive rod; ensure the movement stability of the movable conductive rod, thereby ensuring that the movable contact and the static contact can be accurately aligned and docked; The second guide ring of the inner guide sleeve cooperates with the milled flat structure of the movable conductive rod through an anti-rotation key to prevent the movable conductive rod from rotating during the sliding process, thereby avoiding twisting of the bellows; The shell adopts a split structure, which is convenient for disassembly and assembly. The main shielding cover is formed by connecting the two porcelain shells with the shielding tube. Compared with the existing technology, the shielding tube is more convenient to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of the present invention; Figure 2 for Figure 1 A magnified view of part A; Figure 3 is a front view of the second guide ring; Figure 4 Schematic diagram of the three-dimensional structure of the dynamic conductive rod; Figure 5 is a cross-sectional view of the inner guide sleeve; Figure 6 is a cross-sectional view of the outer guide sleeve; As shown in the figure: 1. Shell, 11. Porcelain shell, 12. Shielding tube, 121. Shielding tube shielding cover, 2. Static end cover, 21. Moving end shielding cover, 3. Moving end cover, 31. Moving end shielding cover, 32. Jack, 4. Static conductive rod, 41. Static contact, 5. Moving conductive rod, 51. Moving contact, 52. Milling flat structure, 6. Bellows, 7. Inner guide sleeve, 71. Second guide ring, 711. Anti-rotation key, 72. Second annular groove, 73. Annular weight-reducing groove, 74. Cylinder, 75. Support plate, 76. Second vent, 8. Bellows shielding cover, 9. Outer guide sleeve, 91. First guide ring, 92. First annular groove, 93. First vent. DETAILED DESCRIPTION

[0019] In order to clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods.

[0020] like Figures 1 to 6As shown, a horizontally movable ultra-high voltage vacuum interrupter comprises a shell 1, with a static end cover 2 and a dynamic end cover 3 fixedly connected at both ends of the shell 1. A static conductive rod 4 is fixedly connected to the static end cover 2, and a static contact 41 is fixedly connected to one end of the static conductive rod 4 located inside the shell 1. A dynamic conductive rod 5 is slidably penetrated through the dynamic end cover 3, and a dynamic contact 51 is fixedly connected to one end of the dynamic conductive rod 5 located inside the shell 1. A bellows 6 located inside the shell 1 is sleeved on the dynamic conductive rod 5, one end of the bellows 6 is fixedly connected to the dynamic end cover 3, and the other end of the bellows 6 is fixedly connected to the outer wall of the dynamic conductive rod 5 and covered with a bellows shielding cover 8, which is fixed to the dynamic conductive rod 5.

[0021] Specifically, the housing 1 includes two porcelain shells 11 and a shielding tube 12, with the two porcelain shells 11 arranged axially opposite each other. The static end cover 2 and the movable end cover 3 are respectively fixed to the opposite ends of the two porcelain shells 11, and the static end shielding cover 21 is fixed to the connection between the static end cover 2 and the porcelain shell 11, and the movable end shielding cover 31 is fixed to the connection between the movable end cover 3 and the porcelain shell 11. The shielding tube 12 is fixed between the two porcelain shells 11, and the shielding tube shielding cover 121 is fixed to the connection between the two ends of the shielding tube 12 and the porcelain shell 11. The static contact 41 and the movable contact 51 are docked inside the shielding tube 12. The housing 1 adopts a split design structure, which is easy to disassemble and assemble. By arranging the shielding tube 12 between the two porcelain shells 11, the shielding tube 12 is more convenient to install than the existing technology. The shielding tube 12 shields the electric field between the static contact 41 and the movable contact 51, and the shielding covers shield the electric field at each connection, thereby ensuring the stability of the electric field inside the arc extinguishing chamber.

[0022] In this embodiment, the porcelain shell 11 is made of ceramic, and the shielding tube 12 and shielding cover 121 are both made of copper alloy. The porcelain shell 11, shielding tube 12, and shielding cover 121 are connected by bolts, achieving removable affixation. The movable end cover 3 and static end cover 2 are both made of stainless steel, and the movable end shielding cover 31 and static end shielding cover 21 are both made of copper alloy. The movable end cover 3, movable end shielding cover 31, and porcelain shell 11 are connected by bolts, achieving removable affixation. The static end cover 2, static end shielding cover 21, and porcelain shell 11 are also connected by bolts, achieving removable affixation.

[0023] In this embodiment, the movable conductive rod 5 and the movable contact 51 are both made of copper alloy and are integrally formed. The static conductive rod 4 and the static contact 41 are both made of copper alloy and are integrally formed.

[0024] The static conductive rod 4 and the dynamic conductive rod 5 are coaxially arranged. The static conductive rod 4 and the static end cap 2 are not necessarily welded. The static contact 41 is located within the shielding tube 12. An external operating mechanism drives the dynamic conductive rod 5 to slide horizontally along the axial direction, causing the dynamic contact 51 to move into the shielding tube 12 and mate with the static contact 41, thereby achieving circuit conduction. This external operating mechanism is a linear drive mechanism, a common structure in existing ultra-high voltage switches, and will not be described in detail here.

[0025] To enhance the stability of the sliding movable conductive rod 5 and ensure accurate alignment between the movable contact 511 and the stationary contact 4, the movable conductive rod 5 is also sleeved with an inner guide sleeve 7, located between the bellows 6 and the movable conductive rod 5. The inner guide sleeve 7 is fixedly connected to the movable end cover 3 and slidably connected to the movable conductive rod 5. The bellows 6 is sleeved with an outer guide sleeve 9, one end of which is fixedly connected to the movable end cover 3 and the other end of which is inserted into the bellows shield 8 and slidably connected to the bellows shield 8.

[0026] The bellows shield 8 described in this embodiment is made of stainless steel. The end of the bellows shield 8, away from the movable end cap 3, is configured with a trumpet-shaped taper and is fixedly connected to the outer wall of the movable conductive rod 5. The sliding of the movable conductive rod 5 drives the expansion and contraction 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, into which the outer guide sleeve 9 is inserted. The length of the annular cavity is 1 / 3 to 1 / 2 of the length of the bellows 6 to ensure sufficient sliding clearance between the outer guide sleeve 9 and the bellows shield 8.

[0027] The movable 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 movable conductive rod 5. The sliding connection between the outer guide sleeve 9 and the bellows shield 8 indirectly provides external axial support for the movable conductive rod 5. The internal and external supports greatly enhance the support strength of the movable conductive rod 5, preventing the movable conductive rod from tilting downward due to gravity. This allows the movable conductive rod 5 to withstand the shear force caused by its own weight when arranged horizontally, ensuring the linear motion trajectory of the movable conductive rod and the movement stability of the movable conductive rod 5, thereby ensuring that the movable contact 51 and the static contact 41 can be accurately aligned and docked.

[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 movable conductive rod 5 has sufficient sliding margin, the bellows 6 has sufficient deformation margin, and the supporting effect of the movable conductive rod is guaranteed.

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

[0030] Specifically, the outer guide sleeve 9 is located on the outer wall inside the bellows shielding cover 8 and is fixed with a first guide ring 91. The circumferential outer wall of the first guide ring 91 fits the circumferential inner wall of the bellows shielding cover 8, and the outer guide sleeve 9 is slidably connected to the bellows shielding cover 8 through the first guide ring 91.

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

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

[0033] Specifically, second guide rings 71 are 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 movable conductive rod 5. The inner guide sleeve 7 is in sliding contact with the movable conductive rod 5 via the second guide ring 71. The second guide ring 71 provides guidance for the movable conductive rod 5, ensuring the sliding stability of the inner guide sleeve and the movable 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. 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 movable conductive rod 5 is provided with a milled flat structure 52 that cooperates 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 cooperates with the milled flat structure 52. The second guide ring 71 cooperates with the milled flat structure 52 of the movable conductive rod 5 via the anti-rotation key 711 to prevent the movable conductive rod 5 from rotating during the sliding process, thereby preventing the bellows 6 from being twisted.

[0036] The inner guide sleeve 7 of this embodiment comprises a barrel 74 that is sleeved on the movable conductive rod 5 and an annular support plate 75. The support plate 75 is fixedly connected to one end of the barrel 74. The support plate 75 and the barrel 74 are integrally formed. The second guide ring 71 is fixedly connected to the inner wall of the barrel 74. The movable end cover 3 is provided with a socket 32 ​​for the barrel 74 to pass through. The socket 32 ​​is connected to the inner cavity of the bellows 6, and the diameter of the socket 32 ​​is larger than the outer diameter of the barrel 74. The barrel 74 is inserted into the interior of the bellows 6 through the socket 32. The outer diameter of the support plate 75 is larger than the diameter of the socket 32. The support plate 75 is fixedly connected to the outer wall of the movable end cover 3 and seals the socket 32.

[0037] The support plate 75 is provided with a second vent hole 76 connected to the socket 32. This vent hole 76 connects the socket 32 ​​to the outside world, thereby allowing the inner cavity of the bellows 6 to communicate with the outside world. When the movable conductive rod 5 slides, the second vent hole 76 balances the pressure inside the bellows 6, preventing abnormal operation due to pressure imbalance.

[0038] The method for using the above-mentioned ultra-high voltage vacuum interrupter capable of horizontal movement comprises the following steps: The housing 1 is arranged horizontally, and the external operating mechanism drives the movable conductive rod 5 to slide horizontally in the axial direction, so that the movable contact 51 and the static contact 41 are docked in the shielding tube 12; During the sliding of the movable conductive rod 5, the inner guide sleeve 7 provides internal axial support for the movable conductive rod 5, thereby preventing the movable conductive rod from tilting downward due to gravity, and ensuring the linear trajectory of the movable conductive rod 5; The second guide rings 71 at both ends of the inner guide sleeve 7 provide guide limits for the movable conductive rod 5. The second guide rings 71 cooperate with the milled flat structure 52 of the movable conductive rod 5 via the anti-rotation key 711 to prevent the movable conductive rod 5 from rotating during the sliding process, thereby avoiding twisting of the bellows 6. The sliding of the moving conductive rod 5 drives the bellows shielding cover 8 to move synchronously. The bellows shielding cover 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 movement stability of the moving conductive rod 5, thereby ensuring the accurate alignment and docking of the moving contact 51 and the static contact 41.

[0039] Of course, the above description is not limited to the above examples. Technical features not described in the present invention can be achieved by or by adopting existing technologies, which will not be described here. The above embodiments and drawings are only used to illustrate the technical solutions of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A horizontally movable ultra-high voltage vacuum interrupter, comprising a shell (1), wherein both ends of the shell (1) are fixedly connected to a static end cover (2) and a dynamic end cover (3), a static conductive rod (4) is fixedly connected to the static end cover (2), one end of the static conductive rod (4) located in the shell is fixedly connected to a static contact (41), a dynamic conductive rod (5) is slidably passed through the dynamic end cover (3), one end of the dynamic conductive rod (5) located in the shell is fixedly connected to a dynamic contact (51), a bellows (6) located in the shell (1) is sleeved on the dynamic conductive rod (5), one end of the bellows (6) is fixedly connected to the dynamic end cover (3), and the other end is fixedly connected to the dynamic conductive rod (5) and is covered with a bellows shielding cover (8), and the bellows shielding cover (8) is fixedly connected to the dynamic conductive rod (5), characterized in that: An inner guide sleeve (7) is also sleeved on the movable conductive rod (5), and the inner guide sleeve (7) is located between the bellows (6) and the movable conductive rod (5). The inner guide sleeve (7) is fixedly connected to the movable end cover (3) and is slidably connected to the movable conductive rod (5); An outer guide sleeve (9) is sleeved on the bellows (6), one end of the outer guide sleeve (9) is fixedly connected to the movable end cover (3), and the other end is inserted into the bellows shielding cover (8) and slidably connected to the bellows shielding cover.

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: An annular cavity for inserting the outer guide sleeve (9) is formed between the bellows shield (8) and the bellows (6), and 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 guide sleeve (9) is located inside the bellows shielding cover (8) and is fixed with a first guide ring (91). The circumferential outer wall of the first guide ring is in contact with the circumferential inner wall of the bellows shielding cover (8).

6. The horizontally movable ultra-high voltage vacuum interrupter according to claim 1, characterized in that: Second guide rings (71) are fixedly provided at both ends of the inner wall of the inner guide sleeve (7), and the circumferential inner wall of the second guide ring (71) is in contact with the circumferential outer wall of the movable conductive rod (5).

7. The horizontally movable ultra-high voltage vacuum interrupter according to claim 6, characterized in that: The outer wall of the movable conductive rod (5) is provided with a milling 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 milling flat structure (52).

8. The horizontally movable ultra-high voltage vacuum interrupter according to claim 1, characterized in that: The housing (1) comprises two porcelain shells (11) and a shielding cylinder (12). The two porcelain shells (11) are arranged opposite to each other in the axial direction. The static end cover (2) and the dynamic end cover (3) are respectively fixed to opposite ends of the two porcelain shells (11). The shielding cylinder (12) is fixed between the two porcelain shells (11). The static contact (41) and the dynamic contact (51) are connected to each other in the shielding cylinder (12).

9. The horizontally movable ultra-high voltage vacuum interrupter according to claim 8, characterized in that: The static end shielding cover (21) is fixedly connected to the connection between the static end cover (2) and the porcelain shell (11), the dynamic end shielding cover (31) is fixedly connected to the connection between the dynamic end cover (3) and the porcelain shell (11), and the shielding tube shielding cover (121) is fixedly connected to the connection between the two ends of the shielding tube (12) and the porcelain shell (11).

10. The method for using the horizontally movable ultra-high voltage vacuum interrupter according to any one of claims 1 to 9, characterized in that: The following steps are involved: The external operating mechanism drives the movable conductive rod (5) to slide horizontally in the axial direction, so that the movable contact (51) and the static contact (41) are docked in the shielding cylinder (12); During the sliding process of the movable conductive rod (5), the inner guide sleeve (7) provides internal axial support for the movable conductive rod (5), thereby preventing the movable conductive rod from tilting downward due to gravity, and ensuring the linear trajectory of the movable conductive rod; The second guide rings (71) at both ends of the inner guide sleeve (7) provide guide limits for the movable conductive rod (5). The second guide rings (71) cooperate with the milling flat structure (52) of the movable conductive rod (5) through the anti-rotation key (711) to prevent the movable conductive rod (5) from rotating during the sliding process, thereby avoiding twisting of the bellows (6). The moving conductive rod (5) slides and drives the bellows shielding cover (8) to move synchronously. The bellows shielding cover (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 movement stability of the moving conductive rod (5), thereby ensuring accurate centering and docking of the moving contact (51) and the static contact (41).

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