Parallel-connection double-fracture gas insulation isolation switch equipment

Abstract

The utility model relates to a parallel double-fracture gas insulation disconnecting switch device which comprises a bottom frame, an insulation bearing plate is arranged on the inner side of the bottom frame, a plurality of second static contacts are arranged on the insulation bearing plate at intervals, the top of the bottom frame is rotationally connected with a first insulation main shaft, the first insulation main shaft is connected with a first transmission part, and the first transmission part is connected with a second transmission part. A vacuum arc-extinguishing device is arranged at the top end of the first transmission part, and a second transmission part is arranged at the top end of the vacuum arc-extinguishing device. By using the sealing piece and the corrugated sleeve, two-layer sealing is formed, the vacuum cavity is kept stable, and the error-tolerant rate is increased through the two-layer sealing.

Description

Technical Field

[0001] This invention belongs to the field of insulating disconnect switches, specifically a parallel double-break gas insulating disconnect switchgear. Background Technology

[0002] Currently, in the photovoltaic and wind power markets, switchgear with a voltage level of 40.5KV, a rated current of 630A, and a short-circuit breaking current of 31.5KA generally uses CGIS cabinets, and its disconnecting switches are all direct-acting disconnecting switches. These disconnecting switches are prone to transmission difficulties and can only be used in a top-isolating, bottom-circuit breaker configuration. Furthermore, the dimensions of the gas chamber and cabinet are relatively large, resulting in a relatively high cost per unit.

[0003] Existing vacuum interrupters use corrugated sleeves to maintain a vacuum in the vacuum chamber. However, since there is only one layer of corrugated sleeve, it is prone to rupture, which would disrupt the vacuum environment. Therefore, a parallel double-break gas-insulated disconnect switchgear is proposed. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] Given the following technical problems in the existing technology: the existing vacuum interrupter uses a corrugated sleeve to maintain the vacuum chamber, but since there is only one layer of corrugated sleeve, it is prone to breakage, which leads to the destruction of the vacuum environment.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a parallel double-break gas-insulated disconnect switchgear, including a base frame, an insulating support plate is provided in the middle of the inner side of the base frame, a number of stationary contacts are arranged at intervals on the insulating support plate, an insulating main shaft is rotatably connected to the back side of the inner side of the base frame, the insulating main shaft is connected to a transmission component, a vacuum arc extinguisher is provided at the top of the transmission component, and a transmission component is provided at the top of the vacuum arc extinguisher;

[0007] The vacuum interrupter has a vacuum chamber on its inner side, and a sealing element and a movable element are provided on the inner side of the vacuum chamber. The sealing element is sleeved in the middle of the movable element. The sealing element includes a rubber diaphragm, a polyethylene ring and a magnetic ring assembly. Several polyethylene rings are spaced apart on the outer periphery of the rubber diaphragm. A magnetic ring assembly is fixedly connected to the inner or outer side of the rubber diaphragm.

[0008] The magnetic ring assembly includes a magnetic ring one and a magnetic ring two. The magnetic ring one is disposed on the inner side of the rubber membrane, and the magnetic ring two is disposed on the outer side of the rubber membrane. There are two magnetic rings one corresponding to each other and two magnetic rings two corresponding to each other. The polarities of the opposite faces of the magnetic rings one are the same, and the polarities of the opposite faces of the magnetic rings two are opposite.

[0009] As a preferred technical solution for a parallel double-break gas-insulated disconnector switchgear, the transmission component one includes an insulating main shaft one, a crank arm, a moving frame, and a mounting bracket. The insulating main shaft one is rotatably connected to the inner side of the base frame. Connecting shafts are spaced apart on the insulating main shaft one. The connecting shafts are screwed to the connecting frame one. The end of the connecting frame one away from the insulating main shaft one is hinged to the moving frame. The end of the moving frame away from the insulating main shaft one is hinged to the crank arm. The bottom end of the crank arm is hinged to the moving contact two. The bottom end of the vacuum interrupter is provided with a mounting bracket. The inner side of the base frame is provided with a connecting component. The connecting component is movably connected to the moving contact two.

[0010] The electrical connector includes an insulating receiving plate and a second stationary contact. Several second stationary contacts are spaced apart on the insulating receiving plate, and the second stationary contacts are movably connected to the second moving contact.

[0011] The stationary contact two is electrically connected to the vacuum interrupter through the moving contact two, the crank arm, and the mounting bracket.

[0012] As a preferred technical solution for a parallel double-break gas-insulated disconnector switchgear, the transmission component two includes a guide component, an insulating main shaft two, a connecting hoop, a connecting frame two, a connecting plate one, a connecting plate two, and a connecting plate three. The insulating main shaft two is provided with connecting hoops at intervals. The connecting frame two is provided on the connecting hoop. The connecting plate two is hinged to the connecting frame two. The connecting plate one is hinged to the connecting hoop. The connecting plate one and the connecting plate two are hinged together. The connecting plate three is hinged to the connecting component. The bottom end of the guide component is connected to a movable part inside the vacuum interrupter.

[0013] The second insulating spindle controls the movement of the guide components through the connecting hoop, the second connecting frame, the first connecting plate, the second connecting plate, and the third connecting plate.

[0014] As a preferred technical solution for parallel double-break gas-insulated disconnect switchgear, the guide includes a limiting cylinder, an arc frame, a guide rod, and a connecting rod. A side frame is provided on the upper part of the base frame. The side frame is fixedly connected to the limiting cylinder. The limiting cylinder is movably inserted into the guide rod. A movable part is provided at the bottom end of the guide rod. An arc frame is provided on the side frame. The connecting rod passes through the arc frame and is movably connected to the arc frame.

[0015] The connecting rod is provided with an electrical nut, which is movably connected to the arc frame, and the magnetic ring assembly is located between two adjacent polyethylene rings.

[0016] The limiting cylinder constrains the guide rod, allowing it to move vertically up and down.

[0017] As a preferred technical solution for parallel double-break gas-insulated disconnecting switchgear, the vacuum arc extinguisher includes a porcelain shell, a stationary contact one, a sealing sleeve, and a shielding cover two. The inner side of the porcelain shell is a vacuum chamber, the top of the vacuum chamber is provided with a sealing sleeve, the inner side of the sealing sleeve is provided with a shielding cover two, a movable component is movably inserted into the inner side of the shielding cover two, and the bottom of the vacuum chamber is provided with a stationary contact one, which is movably connected to the movable component.

[0018] As a preferred technical solution for a parallel double-break gas-insulated disconnect switchgear, the movable component includes a movable conductive rod, a movable contact one, and a shielding cover one. The movable conductive rod is movably inserted into the shielding cover two. The bottom end of the movable conductive rod is provided with the shielding cover one. A corrugated sleeve is provided between the shielding cover one and the shielding cover two. The corrugated sleeve is fitted on the outside of the movable conductive rod. A sealing ring is fitted around the bottom periphery of the shielding cover two. The outer periphery of the sealing ring is fixedly connected to the inner wall of the ceramic shell. A shielding cylinder is provided at the bottom of the vacuum chamber. The shielding cylinder covers the outside of the movable contact one and the stationary contact one. A hanging bracket is provided at the bottom end of the stationary contact one.

[0019] The beneficial effects of the parallel double-break gas-insulated disconnect switchgear of the present invention are as follows: by using sealing elements and corrugated sleeves, two layers of seals are formed, which maintains the stability of the vacuum cavity and increases the fault tolerance rate. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the internal structure of the vacuum arc extinguisher of the present invention;

[0024] Figure 4 For the present invention Figure 1 A partially enlarged structural diagram of part A in the middle;

[0025] Figure 5 For the present invention Figure 1 A partially enlarged structural diagram of section B;

[0026] Figure 6 For the present invention Figure 2 A magnified schematic diagram of part C in the middle.

[0027] Reference numerals in the attached diagram: 1. Base frame; 2. Insulating receiving plate; 3. Static contact two; 4. Side frame; 5. Vacuum arc extinguisher; 6. Insulating main shaft one; 7. Moving conductive rod; 8. Connecting rod; 9. Limiting cylinder; 10. Insulating main shaft two; 11. Arc frame; 12. Crank arm; 13. Moving frame; 14. Connecting frame one; 15. Sealing ring; 16. Shielding cylinder; 17. Moving contact one; 18. Static contact one; 19. Corrugated sleeve; 20. Shielding cover one; 21. Sealing sleeve; 22. Shielding cover two; 23. Moving contact two; 24. Guide rod; 25. Connecting clamp; 26. Connecting frame two; 27. Connecting plate one; 28. Connecting plate two; 29. ​​Connecting plate three; 30. Magnetic ring assembly; 30.1. Magnetic ring one; 30.2. Magnetic ring two; 31. Polyethylene ring; 32. Rubber diaphragm; 33. Hanging frame; 34. Ceramic shell. Detailed Implementation

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0031] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0032] like Figures 1-6As shown, the present invention proposes a parallel double-break gas-insulated disconnect switchgear, including a base frame 1. An insulating support plate 2 is provided in the middle of the inner side of the base frame 1. Several stationary contacts 3 are arranged at intervals on the insulating support plate 2. An insulating main shaft 6 is rotatably connected to the back side of the inner side of the base frame 1. The insulating main shaft 6 is connected to a transmission component 1. A vacuum arc extinguisher 5 is provided at the top of the transmission component 1. A transmission component 2 is provided at the top of the vacuum arc extinguisher 5.

[0033] The vacuum interrupter 5 has a vacuum chamber on its inner side, and a sealing element and a movable element are provided on the inner side of the vacuum chamber. The sealing element is sleeved in the middle of the movable element. The sealing element includes a rubber diaphragm 32, a polyethylene ring 31 and a magnetic ring assembly 30. Several polyethylene rings 31 are spaced apart on the outer periphery of the rubber diaphragm 32. The magnetic ring assembly 30 is fixedly connected to the inner or outer side of the rubber diaphragm 32.

[0034] The magnetic ring assembly 30 includes a first magnetic ring 30.1 and a second magnetic ring 30.2. The first magnetic ring 30.1 is disposed on the inner side of the rubber membrane 32, and the second magnetic ring 30.2 is disposed on the outer side of the rubber membrane 32. There are two first magnetic rings 30.1 corresponding to each other and two second magnetic rings 30.2 corresponding to each other. The opposite faces of the first magnetic rings 30.1 have the same polarity, and the opposite faces of the second magnetic rings 30.2 have opposite polarities.

[0035] The transmission component includes an insulated main shaft 6, a crank arm 12, a movable frame 13, and a mounting bracket 33. The insulated main shaft 6 is rotatably connected to the inner side of the base frame 1. Connecting shafts are spaced on the insulated main shaft 6. The connecting shafts are screwed to the connecting frame 14. The end of the connecting frame 14 away from the insulated main shaft 6 is hinged to the movable frame 13. The end of the movable frame 13 away from the insulated main shaft 6 is hinged to the crank arm 12. The bottom end of the crank arm 12 is hinged to a movable contact 23. The bottom end of the vacuum arc interrupter 5 is provided with a mounting bracket 33. The inner side of the base frame 1 is provided with a connecting element. The connecting element is movably connected to the movable contact 23.

[0036] The electrical connection component includes an insulating receiving plate 2 and a stationary contact 23. Several stationary contacts 23 are spaced apart on the insulating receiving plate 2, and the stationary contacts 23 are movably connected to the moving contact 23.

[0037] The stationary contact 23 is electrically connected to the vacuum interrupter 5 through the moving contact 23, the crank arm 12, and the mounting bracket 33.

[0038] The transmission component two includes a guide, an insulating main shaft two 10, a connecting hoop 25, a connecting frame two 26, a connecting plate one 27, a connecting plate two 28, and a connecting plate three 29. The insulating main shaft two 10 is provided with connecting hoops 25 at intervals. The connecting frame two 26 is provided on the connecting hoop two 25. The connecting plate two 28 is hinged to the connecting frame two 26. The connecting plate one 27 is hinged to the connecting hoop 25. The connecting plate one 27 is hinged to the connecting plate two 28. The connecting plate three 29 is hinged to the hinge point of the connecting plate one 27 and the connecting plate two 28. The connecting plate three 29 is hinged to the guide. The bottom end of the guide is connected to the movable part inside the vacuum arc extinguisher 5.

[0039] The insulating spindle 210 controls the movement of the guide components through the connecting hoop 25, connecting frame 26, connecting plate 1 27, connecting plate 28, and connecting plate 3 29.

[0040] The guide includes a limiting cylinder 9, an arc-shaped frame 11, a guide rod 24, and a connecting rod 8. A side frame 4 is provided on the upper part of the base frame 1. The side frame 4 is fixedly connected to the limiting cylinder 9. The limiting cylinder 9 is movably inserted into the guide rod 24. A movable part is provided at the bottom end of the guide rod 24. An arc-shaped frame 11 is provided on the side frame 4. The connecting rod 8 passes through the arc-shaped frame 11 and is movably connected to the arc-shaped frame 11.

[0041] The connecting rod 8 is provided with an electrical nut, which is movably connected to the arc frame 11. The magnetic ring assembly 30 is located between two adjacent polyethylene rings 31.

[0042] The limiting cylinder 9 constrains the guide rod 24 to move vertically up and down.

[0043] The vacuum arc interrupter 5 includes a ceramic shell 34, a stationary contact 18, a sealing sleeve 21, and a shielding cover 22. The inner side of the ceramic shell 34 is a vacuum chamber. The top of the vacuum chamber is provided with a sealing sleeve 21. The inner side of the sealing sleeve 21 is provided with a shielding cover 22. A movable component is movably inserted into the inner side of the shielding cover 22. The bottom of the vacuum chamber is provided with a stationary contact 18, which is movably connected to the movable component.

[0044] The movable components include a movable conductive rod 7, a movable contact 17, and a shielding cover 20. The movable conductive rod 7 is movably inserted into the shielding cover 22. The bottom end of the movable conductive rod 7 is provided with the shielding cover 20. A corrugated sleeve 19 is provided between the shielding cover 20 and the shielding cover 22. The corrugated sleeve 19 is fitted on the outside of the movable conductive rod 7. A sealing ring 15 is fitted around the bottom of the shielding cover 22. The outer periphery of the sealing ring 15 is fixedly connected to the inner wall of the ceramic shell 34. A shielding cylinder 16 is provided at the bottom of the vacuum chamber. The shielding cylinder 16 covers the outside of the movable contact 17 and the stationary contact 18. A hanging bracket 33 is provided at the bottom end of the stationary contact 18.

[0045] The crank arm 12 is connected to the moving contact 23 via the knife switch rotation shaft, and the arc frame 11 and the stationary contact 23 are respectively connected to the wires.

[0046] The vacuum arc extinguisher 5 is fixedly connected to the side frame 4, the bottom end of the connecting rod 8 is connected to the moving conductive rod 7, the hanging frame 33 is connected to the stationary contact 18, the insulating main shaft 6 is rotatably connected to the base frame 1, and the side frame 4 is rotatably connected to the insulating main shaft 10.

[0047] The specific implementation method is as follows: the insulating spindle 6 moves through the connecting frame 14, the moving frame 13 and the crank arm 12, and the moving contact 23 is connected to the stationary contact 3 through the crank arm 12;

[0048] The insulating spindle 210 drives the connecting hoop 25 and the connecting frame 26, the connecting plate 1 27 and the connecting plate 28 to move the guide rod 24 up and down inside the limiting cylinder 9. The guide rod 24, through the moving conductive rod 7, carries the shield 1 20 to approach or move away from the stationary contact 18.

[0049] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A parallel double-break gas-insulated disconnector switchgear, characterized in that: Includes a base frame (1), an insulating main shaft (6) is rotatably connected to the back side of the inner side of the base frame (1), the insulating main shaft (6) is connected to a transmission component (1), a vacuum interrupter (5) is provided at the top of the transmission component (1), and a transmission component (2) is provided at the top of the vacuum interrupter (5). The vacuum interrupter (5) has a vacuum chamber on its inner side. The vacuum chamber has a sealing element and a movable element on its inner side. The sealing element is fitted in the middle of the movable element. The sealing element includes a rubber diaphragm (32). Several polyethylene rings (31) are spaced apart on the outer periphery of the rubber diaphragm (32). A magnetic ring assembly (30) is fixedly connected to the inner or outer side of the rubber diaphragm (32). The magnetic ring assembly (30) includes a magnetic ring one (30.1) and a magnetic ring two (30.2). The magnetic ring one (30.1) is disposed on the inner side of the rubber membrane (32), and the magnetic ring two (30.2) is disposed on the outer side of the rubber membrane (32). There are two magnetic rings one (30.1) corresponding to each other and two magnetic rings two (30.2) corresponding to each other. The polarities of the opposite faces of the magnetic rings one (30.1) are the same, and the polarities of the opposite faces of the magnetic rings two (30.2) are opposite.

2. The parallel double-break gas-insulated disconnector switchgear according to claim 1, characterized in that: The transmission component includes an insulated main shaft (6), a crank arm (12), a moving frame (13), and a mounting bracket (33). The insulated main shaft (6) is rotatably connected to the inner side of the base frame (1). Connecting shafts are installed at intervals on the insulated main shaft (6). The connecting shafts are screwed to the connecting frame (14). The end of the connecting frame (14) away from the insulated main shaft (6) is hinged to the moving frame (13). The end of the moving frame (13) away from the insulated main shaft (6) is hinged to the crank arm (12). The bottom end of the crank arm (12) is hinged to the moving contact (23). The bottom end of the vacuum arc extinguisher (5) is provided with a mounting bracket (33). The inner side of the base frame (1) is provided with a connecting element. The connecting element is movably connected to the moving contact (23).

3. The parallel double-break gas-insulated disconnector switchgear according to claim 2, characterized in that: The electrical connection component includes an insulating receiving plate (2) and a stationary contact 2 (3). Several stationary contacts 2 (3) are spaced apart on the insulating receiving plate (2). The stationary contacts 2 (3) are movably connected to the moving contact 2 (23).

4. The parallel double-break gas-insulated disconnector switchgear according to claim 1, characterized in that: The transmission component two includes a guide, an insulating main shaft two (10), a connecting hoop (25), a connecting frame two (26), a connecting plate one (27), a connecting plate two (28), and a connecting plate three (29). The insulating main shaft two (10) is provided with connecting hoops (25) at intervals. The connecting hoop two (26) is provided on the connecting hoop (25). The connecting plate two (28) is hinged to the connecting frame two (26). The connecting plate one (27) is hinged to the connecting hoop (25). The connecting plate one (27) is hinged to the connecting plate two (28). The connecting plate three (29) is hinged to the hinge point of the connecting plate one (27) and the connecting plate two (28). The connecting plate three (29) is hinged to the guide. The bottom end of the guide is connected to the movable part inside the vacuum arc extinguisher (5).

5. The parallel double-break gas-insulated disconnector switchgear according to claim 4, characterized in that: The guide includes a limiting cylinder (9), an arc frame (11), a guide rod (24), and a connecting rod (8). A side frame (4) is provided on the upper part of the base frame (1). The side frame (4) is fixedly connected to the limiting cylinder (9). The limiting cylinder (9) is movably inserted into the guide rod (24). A movable part is provided at the bottom end of the guide rod (24). An arc frame (11) is provided on the side frame (4). The connecting rod (8) passes through the arc frame (11) and is movably connected to the arc frame (11). The connecting rod (8) is provided with an electrical nut, which is movably connected to the arc frame (11).

6. The parallel double-break gas-insulated disconnector switchgear according to claim 5, characterized in that: The magnetic ring assembly (30) is located between two adjacent polyethylene rings (31).

7. The parallel double-break gas-insulated disconnector switchgear according to claim 5, characterized in that: The vacuum arc interrupter (5) includes a ceramic shell (34), a stationary contact (18), a sealing sleeve (21), and a shielding cover (22). The inner side of the ceramic shell (34) is a vacuum chamber. The top of the vacuum chamber is provided with a sealing sleeve (21). The inner side of the sealing sleeve (21) is provided with a shielding cover (22). A movable component is movably inserted into the inner side of the shielding cover (22). The bottom of the vacuum chamber is provided with a stationary contact (18). The stationary contact (18) is movably connected to the movable component.

8. The parallel double-break gas-insulated disconnector switchgear according to claim 7, characterized in that: The movable component includes a movable conductive rod (7) and a movable contact one (17). The movable conductive rod (7) is movably inserted into the shielding cover two (22). The bottom end of the movable conductive rod (7) is provided with a shielding cover one (20). A corrugated sleeve (19) is provided between the shielding cover one (20) and the shielding cover two (22). The corrugated sleeve (19) is sleeved on the outside of the movable conductive rod (7). The outer periphery of the bottom of the shielding cover two (22) is connected to a sealing ring (15). The outer periphery of the sealing ring (15) is fixedly connected to the inner wall of the ceramic shell (34). The bottom of the vacuum cavity is provided with a shielding cylinder (16). The shielding cylinder (16) covers the outside of the movable contact one (17) and the stationary contact one (18). The bottom end of the stationary contact one (18) is provided with a hanging bracket (33).

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