Visual protection type vacuum arc-extinguishing chamber

Abstract

The utility model discloses a visual protection type vacuum arc-extinguishing chamber, which comprises a vacuum arc-extinguishing chamber body, a protection sleeve arranged outside the vacuum arc-extinguishing chamber body, an annular groove arranged in the middle of the protection sleeve, a rotating ring rotatably connected inside the annular groove, a first window arranged on the side wall of the rotating ring, and a second window arranged on the inner wall of the annular groove. A matching hole is formed in the outer wall of one side of the protective sleeve, a fixing plate is fixed to the outer wall of one side of the protective sleeve, and a guide cylinder is integrally formed at the top of the fixing plate. According to the utility model, the outer wall of the vacuum arc-extinguishing chamber body can be effectively prevented from being scratched in the installation process by arranging the protective sleeve outside the vacuum arc-extinguishing chamber body, and meanwhile, light rays can penetrate into the vacuum arc-extinguishing chamber body through the coincidence of the window I and the window II by rotating the rotating ring, so that the vacuum arc-extinguishing chamber body is protected. And meanwhile, the visual observation effect of the interior of the vacuum arc-extinguishing chamber body can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum interrupters, and particularly relates to a visible protection type vacuum interrupter. Background Art

[0002] A vacuum interrupter, also known as a vacuum switch tube, is a core component of medium and high voltage power switches. Its main function is to quickly extinguish the arc and suppress the current after the medium and high voltage circuit cuts off the power through the excellent insulation of the vacuum inside the tube, avoiding accidents and unexpected situations, and is widely used in the power transmission and distribution control system.

[0003] At present, there are glass vacuum interrupters on the market. Because the internal situation can be visually observed, the glass vacuum interrupter is widely used. However, the insulating shell of the visible glass vacuum interrupter is made of glass, and the outer wall of the glass vacuum interrupter is prone to scratching during installation, which may cause the vacuum interrupter to break due to scratches. Therefore, it is urgent to design a visible protection type vacuum interrupter to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a visible protection type vacuum interrupter to solve the above deficiencies in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A visible protection type vacuum interrupter includes a vacuum interrupter body. A protective sleeve is arranged outside the vacuum interrupter body. A circular groove is arranged in the middle of the protective sleeve. A rotating ring is rotatably connected inside the circular groove. A window one is opened on the side wall of the rotating ring. A window two is arranged on the inner wall of the circular groove. A matching hole is arranged on the outer wall of one side of the protective sleeve. A fixing plate is fixed on the outer wall of one side of the protective sleeve. A guiding cylinder is integrally formed on the top of the fixing plate. A guide post is movably inserted inside the guiding cylinder. One end of the guide post is provided with a hemispherical surface adapted to the matching hole. A spring is arranged inside the guiding cylinder.

[0007] Furthermore, a limiting groove is arranged on the outer wall of the top of the guiding cylinder. A limiting block is fixed on the outer wall of the top of the guide post. The limiting block is located inside the limiting groove.

[0008] Furthermore, the vacuum interrupter body includes a guiding sleeve. A moving conductive rod is movably inserted inside the guiding sleeve. A corrugated pipe is fixed on the outer wall of the bottom of the guiding sleeve. The bottom end of the corrugated pipe is fixed to the moving conductive rod.

[0009] Furthermore, limiting rings are connected to the top and bottom of the protective sleeve through threads. The limiting rings are adapted to the vacuum interrupter body.

[0010] Furthermore, a guiding groove is provided on an outer wall of one side of the moving conductive rod. A fitting block is arranged inside the guiding groove. A connecting plate is integrally formed on an outer wall of one side of the fitting block. A fixing bolt is inserted into the connecting plate, and a bottom end of the fixing bolt is in threaded connection with a guiding sleeve.

[0011] Furthermore, a positioning post is integrally formed on a bottom outer wall of the connecting plate. A positioning hole is provided on a top outer wall of the guiding sleeve, and the positioning post is inserted into the positioning hole.

[0012] In the above technical solution, for a visible protection type vacuum interrupter provided by the present utility model, the beneficial effects are as follows: By providing a protective sleeve outside the vacuum interrupter body, it can effectively prevent scratches on the outer wall of the vacuum interrupter body during the installation process. At the same time, by rotating the rotating ring, light can penetrate into the vacuum interrupter body through the coincidence of window one and window two, and the visible observation effect inside the vacuum interrupter body can be ensured; By using the elastic force of the provided spring to fit the hemispherical surface at one end of the guide post with the fitting hole on the protective sleeve, the rotating ring can maintain a stable state after covering window two, preventing the rotating ring from rotating in the natural state; By matching the fitting block with the guiding groove on the moving conductive rod, the moving conductive rod will not rotate axially during movement, effectively preventing the bellows inside the vacuum interrupter body from being sprained when the moving conductive rod moves, thereby extending the service life of the vacuum interrupter body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0014] Figure 1 It is a front view structural schematic diagram provided for an embodiment of a visible protection type vacuum interrupter of the present utility model.

[0015] Figure 2 It is a structural schematic diagram of a guiding cylinder provided for an embodiment of a visible protection type vacuum interrupter of the present utility model.

[0016] Figure 3 It is a structural schematic diagram of a protective sleeve provided for an embodiment of a visible protection type vacuum interrupter of the present utility model.

[0017] Figure 4 It is a structural schematic diagram of the interior of a vacuum interrupter body provided for an embodiment of a visible protection type vacuum interrupter of the present utility model.

[0018] Figure 5 Schematic enlarged structure diagram of part A provided for an embodiment of a visible protection type vacuum interrupter of the present utility model.

[0019] Description of reference numerals:

[0020] 1 Vacuum interrupter body, 2 Protective sleeve, 3 Limiting ring, 4 Guide sleeve, 5 Moving conducting rod, 6 Annular groove, 7 Rotating ring, 8 Window 1, 9 Window 2, 10 Fitting hole, 11 Fixed plate, 12 Guide cylinder, 13 Bellows, 14 Guide post, 15 Hemispherical surface, 16 Limiting groove, 17 Limiting block, 18 Spring, 19 Guide groove, 20 Connecting plate, 21 Fitting block, 22 Fixed bolt, 23 Positioning post, 24 Positioning hole. Specific embodiments

[0021] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] As Figures 1-5 shown, a visible protection type vacuum interrupter provided by an embodiment of the present utility model includes a vacuum interrupter body 1. A protective sleeve 2 is arranged outside the vacuum interrupter body 1. An annular groove 6 is arranged in the middle of the protective sleeve 2. A rotating ring 7 is rotatably connected inside the annular groove 6. A window 1 8 is formed on the side wall of the rotating ring 7. A window 2 9 is arranged on the inner wall of the annular groove 6. A fitting hole 10 is arranged on the outer wall of one side of the protective sleeve 2. A fixed plate 11 is fixed on the outer wall of one side of the protective sleeve 2. A guide cylinder 12 is integrally formed on the top of the fixed plate 11. A guide post 14 is movably inserted into the guide cylinder 12. One end of the guide post 14 is provided with a hemispherical surface 15 adapted to the fitting hole 10. A spring 18 is arranged inside the guide cylinder 12.

[0023] Specifically, in this embodiment, it includes a vacuum interrupter body 1. The insulating shell of the vacuum interrupter body 1 is made of transparent glass. A protective sleeve 2 is arranged outside the vacuum interrupter body 1. Since a large amount of heat will be generated due to the arc when the vacuum interrupter body 1 is disconnected, if there are scratches on the outer wall of the vacuum interrupter body 1, it is very easy for the vacuum interrupter body 1 to break due to the scratches after being heated. The protective sleeve 2 prevents scratches from occurring on the outer wall of the vacuum interrupter body 1, so that the vacuum interrupter body 1 is not easily broken after being heated. A circular groove 6 is arranged in the middle of the protective sleeve 2. A rotating ring 7 is rotatably connected inside the circular groove 6. The rotating ring 7 can rotate inside the circular groove 6. A window one 8 is opened on the side wall of the rotating ring 7. There are two symmetrically arranged windows one 8 on the rotating ring 7. A window two 9 is arranged on the inner wall of the circular groove 6. There are two symmetrically arranged windows two 9 on the inner wall of the circular groove 6. When the window one 8 and the window two 9 correspond, the internal situation of the vacuum interrupter body 1 can be visually observed. A mating hole 10 is arranged on the outer wall of one side of the protective sleeve 2. A fixing plate 11 is fixed on the outer wall of one side of the protective sleeve 2. A guiding cylinder 12 is integrally formed at the top of the fixing plate 11. A guide post 14 is movably inserted inside the guiding cylinder 12. One end of the guide post 14 is provided with a hemispherical surface 15 adapted to the mating hole 10. A spring 18 is arranged inside the guiding cylinder 12. When the guide post 14 corresponds to the mating hole 10, the guide post 14 can partially enter the mating hole 10 with the hemispherical surface 15 through the spring 18. At this time, the frictional force received when the rotating ring 7 rotates increases. By the elastic force of the arranged spring 18, the hemispherical surface 15 at one end of the guide post 14 is matched with the mating hole 10 on the protective sleeve 2, so that the rotating ring 7 can maintain a stable state after blocking the window two 9, preventing the rotating ring 7 from rotating in the natural state.

[0024] A visible protection type vacuum interrupter provided by the present utility model can effectively prevent scratches from occurring on the outer wall of the vacuum interrupter body 1 during the installation process by arranging the protective sleeve 2 outside the vacuum interrupter body 1. At the same time, by rotating the rotating ring 7, light can penetrate into the vacuum interrupter body 1 through the coincidence of the window one 8 and the window two 9, and at the same time, the visual observation effect inside the vacuum interrupter body 1 can be ensured.

[0025] In another embodiment provided by the present utility model, a limiting groove 16 is arranged on the outer wall of the top of the guiding cylinder 12. A limiting block 17 is fixed on the outer wall of the top of the guide post 14. The limiting block 17 is located inside the limiting groove 16. The movement range of the guide post 14 is limited by the limiting block 17. Limiting rings 3 are threadedly connected to the top and bottom of the protective sleeve 2 respectively. The limiting rings 3 are adapted to the vacuum interrupter body 1. The limiting rings 3 can block the vacuum interrupter body 1, so that the vacuum interrupter body 1 can be fixed inside the protective sleeve 2, making it more convenient to assemble the protective sleeve 2 and the vacuum interrupter body 1.

[0026] In another embodiment provided by the present utility model, the vacuum interrupter body 1 includes a guide sleeve 4. A moving conducting rod 5 is movably inserted into the interior of the guide sleeve 4. The guide sleeve 4 guides the up-and-down movement of the conducting rod 5, making the up-and-down movement of the conducting rod 5 more stable. A bellows 13 is fixed to the bottom outer wall of the guide sleeve 4. The bellows 13 is fixed to both the guide sleeve 4 and the conducting rod 5 by means of sealed welding. At the same time, if the bellows 13 is sprained, it will cause air leakage in the vacuum interrupter body 1. The bottom end of the bellows 13 is fixed to the moving conducting rod 5. The guide sleeve 4, the moving conducting rod 5, and the bellows 13 are all inherent structures of the existing technology vacuum interrupter body 1. A guide groove 19 is provided on the outer wall of one side of the moving conducting rod 5. A mating block 21 is arranged inside the guide groove 19. The width of the mating block 21 is adapted to the guide groove 19, so that the mating block 21 can prevent the moving conducting rod 5 from rotating axially. A connecting plate 20 is integrally formed on the outer wall of one side of the mating block 21. A fixing bolt 22 is inserted into the connecting plate 20. The bottom end of the fixing bolt 22 is threadedly connected to the guide sleeve 4, and the connecting plate 20 is fixed by using the fixing bolt 22. A positioning post 23 is integrally formed on the bottom outer wall of the connecting plate 20. A positioning hole 24 is provided on the top outer wall of the guide sleeve 4. The positioning post 23 is inserted into the positioning hole 24. By using the cooperation of the positioning post 23 and the positioning hole 24, the connecting plate 20 is limited. By cooperating the mating block 21 with the guide groove 19 on the moving conducting rod 5, the moving conducting rod 5 will not rotate axially during movement, which can effectively prevent the moving conducting rod 5 from spraining the bellows 13 inside the vacuum interrupter body 1 during movement, thereby extending the service life of the vacuum interrupter body 1.

[0027] Working principle: When it is necessary to assemble the protective sleeve 2 with the vacuum interrupter body 1, the protective sleeve 2 is sleeved on the outside of the vacuum interrupter body 1, and then the limiting rings 3 are threadedly connected to both ends of the protective sleeve 2; when it is necessary to observe the inside of the vacuum interrupter body 1, the rotating ring 7 is rotated so that the window one 8 on the rotating ring 7 corresponds to the window two 9 inside the annular groove 6. At this time, light can penetrate into the vacuum interrupter body 1 through the coincidence of the window one 8 and the window two 9, enabling visual observation of the inside of the vacuum interrupter body 1; when it is necessary to block the window two 9, by rotating the rotating ring 7, the hemispherical surface 15 at one end of the guide post 14 is engaged with the mating hole 10 through the elastic force of the spring 18, thereby increasing the frictional force when the rotating ring 7 rotates. At this time, the window one 8 and the window two 9 are misaligned, so that the rotating ring 7 blocks the window two 9 to prevent foreign objects from scratching the vacuum interrupter body 1 through the window two 9.

[0028] Only some exemplary embodiments of the present utility model have been described by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present utility model. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present utility model.

Claims

1. A visual protection type vacuum interrupter, characterized in that: The invention comprises a vacuum arc extinguishing chamber body (1), wherein a protective sleeve (2) is arranged on the outside of the vacuum arc extinguishing chamber body (1), an annular groove (6) is arranged in the middle of the protective sleeve (2), a rotating ring (7) is rotatably connected inside the annular groove (6), a window one (8) is opened on the side wall of the rotating ring (7), a window two (9) is arranged on the inner wall of the annular groove (6), a matching hole (10) is arranged on one side outer wall of the protective sleeve (2), a fixing plate (11) is fixed on one side outer wall of the protective sleeve (2), a guide cylinder (12) is integrally formed on the top of the fixing plate (11), a guide column (14) is movably inserted inside the guide cylinder (12), one end of the guide column (14) is provided with a hemispherical surface (15) adapted to the matching hole (10), and a spring (18) is arranged inside the guide cylinder (12).

2. A visual protection type vacuum interrupter according to claim 1, characterized in that: A limiting groove (16) is provided on the top outer wall of the guide cylinder (12), and a limiting block (17) is fixed on the top outer wall of the guide column (14), wherein the limiting block (17) is located inside the limiting groove (16).

3. A visual protection type vacuum interrupter according to claim 1, characterized in that: The vacuum interrupter body (1) comprises a guide sleeve (4), a movable conductive rod (5) is movably inserted into the interior of the guide sleeve (4), a bellows (13) is fixed to the bottom outer wall of the guide sleeve (4), and the bottom end of the bellows (13) is fixed to the movable conductive rod (5).

4. A visual protection type vacuum interrupter according to claim 3, characterized in that: The top and bottom of the protective sleeve (2) are both connected to a limit ring (3) via threads, and the limit ring (3) is compatible with the vacuum interrupter body (1).

5. A visual protection type vacuum interrupter according to claim 4, characterized in that: A guide groove (19) is provided on one side outer wall of the movable conductive rod (5), a matching block (21) is provided inside the guide groove (19), a connecting plate (20) is integrally formed on one side outer wall of the matching block (21), a fixing bolt (22) is inserted inside the connecting plate (20), and the bottom end of the fixing bolt (22) is threadedly connected to the guide sleeve (4).

6. A visual protection type vacuum interrupter according to claim 5, characterized in that: A positioning column (23) is integrally formed on the bottom outer wall of the connecting plate (20), a positioning hole (24) is provided on the top outer wall of the guide sleeve (4), and the positioning column (23) is inserted into the interior of the positioning hole (24).

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