A disconnecting switch for an outdoor vacuum circuit breaker

Abstract

This utility model discloses a disconnecting switch for an outdoor vacuum circuit breaker, relating to the field of disconnecting switch technology. Specifically, it includes a base, two side plates fixedly connected to the sides of the base, multiple pole posts fixedly connected to the top of the base, a moving contact fixedly connected to the outer side of each pole post, a knife switch rotatably connected to the side of the moving contact, a fixing plate fixedly connected between the two side plates, and multiple insulators fixedly connected to the top of the fixing plate, the number of insulators being equal to the number of pole posts. This utility model ensures smooth rotation of the knife switch during use, and after rotation, the contact surface between the knife switch and the stationary contact is increased through a convex ball. This solves the problem of poor contact between the knife switch and the moving contact or between the knife switch and the stationary contact if the thickness of the moving and stationary contacts is inconsistent, there are processing errors, or they are not installed on the same vertical plane.

Description

Technical Field

[0001] This utility model relates to the field of disconnecting switch technology, specifically to a disconnecting switch for an outdoor vacuum circuit breaker. Background Technology

[0002] High-voltage outdoor disconnect switches are the main power distribution equipment in power system substations. They can be used as independent components or as the core components of outdoor circuit breakers. Their main function is to isolate and connect power systems.

[0003] Currently, most outdoor disconnect switches are open-type, with both the isolating switch and the moving contact having planar contact. The isolating switch connects to the stationary contact by rotation to achieve closing or opening of the disconnect switch. Because the isolating switch and the moving contact have planar contact, if the thickness of the two components, the moving contact and the stationary contact, are inconsistent, have processing errors, or are not installed on the same vertical plane, it will lead to poor contact between the switch and the moving contact or between the switch and the stationary contact.

[0004] Chinese utility model patent CN201721845904.X discloses a disconnecting switch for a vacuum circuit breaker, including a moving contact and a bracket connected to the outer wall of the circuit breaker. A knife switch assembly is movably connected to the moving contact; a crank arm is movably connected to the bracket, and the crank arm is drivenly connected to the knife switch assembly via an insulating pull rod. This disconnecting switch for an outdoor vacuum circuit breaker reduces the resistance to the knife switch's vertical movement during closing and opening, making the knife switch movement smoother. However, this disconnecting switch for an outdoor vacuum circuit breaker lacks a limit switch for the knife switch. After the disconnecting switch is closed or opened, the knife switch may shift due to external factors, endangering the safety of the operator. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an isolating switch for an outdoor vacuum circuit breaker, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: It includes a base, two side plates fixedly connected to the side of the base, multiple pole posts fixedly connected to the top of the base, a moving contact fixedly connected to the outer side of each pole post, a knife switch rotatably connected to the side of the moving contact, a fixing plate fixedly connected between the two side plates, multiple insulators fixedly connected to the top of the fixing plate, the number of insulators being equal to the number of pole posts, a rotating rod rotatably connected between the two side plates, multiple crank arms fixedly connected to the outer side of the rotating rod, and an operating handle provided on the side of one of the side plates.

[0007] Optionally, the number of crank arms is equal to the number of poles, and an insulating rod is rotatably connected to the top of each crank arm, with the end of the insulating rod away from the crank arm rotatably connected to a knife switch.

[0008] Optionally, a stationary contact is fixedly connected to the top of the insulator, and an inclined groove is opened inside the stationary contact. Two protruding balls are fixedly connected to both sides of the end of the knife switch away from the moving contact.

[0009] Optionally, the operating handle is fixedly connected to a rotating rod, and a limiting plate is fixedly connected to the side of the operating handle.

[0010] Optionally, a tripping stop rod is fixedly connected to the side of one of the side plates, and a closing stop rod is fixedly connected to the side of another side plate.

[0011] Optionally, two elastic telescopic rods are fixedly connected to the side of one of the side plates, one of the elastic telescopic rods is fixedly connected to a tripping block at the end away from the side plate, and the other elastic telescopic rod is fixedly connected to a closing block at the end away from the side plate.

[0012] Optionally, both the opening and closing blocks are trapezoidal in shape, and the inclined surfaces of both the opening and closing blocks are inclined to the ground.

[0013] This utility model provides an isolating switch for an outdoor vacuum circuit breaker, which has the following advantages:

[0014] 1. This type of outdoor vacuum circuit breaker disconnect switch, through the matching arrangement of rotating rod, crank arm, insulating pull rod, knife switch, stationary contact, convex ball and operating handle, can ensure smooth rotation of the knife switch during use. After the knife switch rotates, the convex ball increases the contact surface between the knife switch and the stationary contact, solving the problem of poor contact between the knife switch and the moving contact or between the knife switch and the stationary contact if the thickness of the moving contact and the stationary contact are inconsistent, there are processing errors, or they are not installed in the same vertical position.

[0015] 2. This type of outdoor vacuum circuit breaker disconnector, through the setting of a tripping stop, a closing stop, a flexible telescopic rod, a tripping block, a closing block, and a limit plate, enables the device to quickly and conveniently limit the position of the disconnector after closing or opening, preventing the disconnector from moving. This solves the problem that if the disconnector is not limited, it may move due to external factors after closing or opening the disconnector, endangering the safety of the operator. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model from an axial view.

[0017] Figure 2 This is a side-axis view of the structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of this utility model in axial section.

[0019] Figure 4 This utility model Figure 1 An enlarged structural diagram at point A;

[0020] Figure 5 This is a side sectional view of the structure of this utility model;

[0021] Figure 6 This is a schematic diagram of the axial view of the operating handle of this utility model.

[0022] In the diagram: 1. Base; 2. Side plate; 3. Pole post; 4. Moving contact; 5. Fixed plate; 6. Insulator; 7. Rotating rod; 8. Crank arm; 9. Insulating pull rod; 10. Knife switch; 11. Stationary contact; 12. Convex ball; 13. Operating handle; 14. Opening stop lever; 15. Closing stop lever; 16. Flexible telescopic rod; 17. Opening stop block; 18. Closing stop block; 19. Limit plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example

[0024] Please see Figures 1 to 3 The present invention provides a technical solution including a base 1, two side plates 2 fixedly connected to the side of the base 1, multiple pole posts 3 fixedly connected to the top of the base 1, a moving contact 4 fixedly connected to the outer side of the pole post 3, a knife switch 10 rotatably connected to the side of the moving contact 4, a fixing plate 5 fixedly connected between the two side plates 2, multiple insulators 6 fixedly connected to the top of the fixing plate 5, the number of insulators 6 being equal to the number of pole posts 3, a rotating rod 7 rotatably connected between the two side plates 2, multiple crank arms 8 fixedly connected to the outer side of the rotating rod 7, and an operating handle 13 provided on the side of one of the side plates 2.

[0025] Specifically, during use, the knife switch 10 can be guaranteed to rotate smoothly. After the knife switch 10 rotates, the contact surface between the knife switch 10 and the stationary contact 11 is increased by the convex ball 12. This solves the problem that if the thickness of the moving contact 4 and the stationary contact 11 is inconsistent, there are processing errors, or they are not installed in the same vertical plane position, it will lead to poor contact between the knife switch 10 and the moving contact 4 or between the knife switch 10 and the stationary contact 11.

[0026] Please see Figure 3The number of crank arms 8 is equal to the number of pole posts 3. An insulating rod 9 is rotatably connected to the top of the crank arm 8. The end of the insulating rod 9 away from the crank arm 8 is rotatably connected to the knife switch 10.

[0027] Specifically, the insulated pull rod 9 can be rotated by the crank arm 8, thereby causing the knife switch 10 to rotate.

[0028] Please refer to Figure 4 to Figure 5 The top of the insulator 6 is fixedly connected to a stationary contact 11, and the inside of the stationary contact 11 is provided with an inclined groove. Two protruding balls 12 are fixedly connected to both sides of the end of the knife switch 10 away from the moving contact 4.

[0029] Specifically, the convex ball 12 can increase the contact surface between the knife switch 10 and the stationary contact 11, preventing poor contact between the knife switch 10 and the stationary contact 11.

[0030] Please refer to 6. The operating handle 13 is fixedly connected to the rotating rod 7, and the side of the operating handle 13 is fixedly connected to the limiting plate 19.

[0031] Specifically, the operating handle 13 can cause the rotating rod 7 to rotate simultaneously, thereby completing the closing and opening of the disconnecting switch.

[0032] Please see Figure 6 One of the side plates 2 is fixedly connected to a tripping stop bar 14, and the other of the side plates 2 is fixedly connected to a closing stop bar 15.

[0033] Specifically, the position of the limit plate 19 can be limited by the opening stop lever 14 and the closing stop lever 15 to prevent the operating handle 13 from being rotated too far.

[0034] Please see Figure 6 Two elastic telescopic rods 16 are fixedly connected to the side of one of the side plates 2. One end of the elastic telescopic rod 16 away from the side plate 2 is fixedly connected to the tripping block 17, and the other end of the elastic telescopic rod 16 away from the side plate 2 is fixedly connected to the closing block 18.

[0035] Specifically, the elastic telescopic rod 16 can retract the opening stop 17 and the closing stop 18, thereby facilitating the rotation of the limit plate 19.

[0036] Please refer to Figure 6. Both the tripping block 17 and the closing block 18 are trapezoidal in shape, and the slopes of both the tripping block 17 and the closing block 18 are inclined to the ground.

[0037] Specifically, the inclined surface facilitates the rotation of the limiting plate 19, avoiding the need for the user to perform additional operations to limit the operation handle 13.

[0038] In use, the base 1 is installed in a certain location, and the device is used. When it is necessary to close or open the disconnect switch, the operating handle 13 is turned to rotate the lever 7. After the lever 7 rotates, the crank arm 8 rotates, and then the crank arm 8 pulls the insulating rod 9, causing one end of the insulating rod 9 to move. Then the insulating rod 9 pulls the knife switch 10. Since the knife switch 10 is connected to the moving contact 4, the knife switch 10 starts to rotate. When the crank arm 8 rotates upward, the knife switch 10 rotates upward to complete the opening. When the crank arm 8 rotates up and down, the knife switch 10 rotates downward to complete the closing. When closing, the convex ball 12 is located inside the stationary contact 11 and makes close contact with the two sides of the stationary contact 11. This solves the problem that if the thickness of the moving contact 4 and the stationary contact 11 is inconsistent, there are processing errors, or they are not installed in the same vertical plane position, it will lead to poor contact between the knife switch 10 and the moving contact 4 or between the knife switch 10 and the stationary contact. To address the issue of poor contact in part 11, when the operating handle 13 needs to be turned for a tripping operation, one end of the limit plate 19 is located between the closing stop 15 and the closing stop 18. At this time, the closing stop 15 and the closing stop 18 limit the limit plate 19, thereby limiting the operating handle 13. When the operating handle 13 needs to be turned, the closing stop 18 is pressed to disengage from the limit plate 19, allowing the operating handle 13 to be turned. After turning, the limit plate 19 contacts the tripping stop 17, and the tripping stop 17 is lowered by the inclined surface of the tripping stop 17. Then, the limit plate 19 enters between the tripping stop 17 and the tripping stop 14, thus completing the tripping limit of the operating handle 13. This solves the problem that if the disconnector 10 is not limited, the disconnector 10 may shift due to external factors after the disconnector is closed or opened, endangering the safety of the operator.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An isolating switch of an outdoor vacuum circuit breaker comprising a base (1), characterized in that: Two side plates (2) are fixedly connected to the side of the base (1), and multiple pole posts (3) are fixedly connected to the top of the base (1). A moving contact (4) is fixedly connected to the outside of the pole post (3). A knife switch (10) is rotatably connected to the side of the moving contact (4). A fixing plate (5) is fixedly connected between the two side plates (2). Multiple insulators (6) are fixedly connected to the top of the fixing plate (5). The number of insulators (6) is equal to the number of pole posts (3). A rotating rod (7) is rotatably connected between the two side plates (2). Multiple crank arms (8) are fixedly connected to the outside of the rotating rod (7). An operating handle (13) is provided on the side of one of the side plates (2).

2. An isolator for an outdoor vacuum circuit breaker according to claim 1, characterized in that: The number of the crank arms (8) is equal to the number of the pole posts (3). An insulating rod (9) is rotatably connected to the top of the crank arm (8). The end of the insulating rod (9) away from the crank arm (8) is rotatably connected to the knife switch (10).

3. An isolator for outdoor vacuum circuit breakers according to claim 1, characterized in that: The top of the insulator (6) is fixedly connected to a stationary contact (11), and the stationary contact (11) has an inclined groove inside. Two protruding balls (12) are fixedly connected to both sides of the end of the knife switch (10) away from the moving contact (4).

4. An isolator for outdoor vacuum circuit breakers according to claim 1, characterized in that: The operating handle (13) is fixedly connected to the rotating rod (7), and the side of the operating handle (13) is fixedly connected to the limiting plate (19).

5. An isolator for an outdoor vacuum circuit breaker according to claim 4, characterized in that: One of the side plates (2) is fixedly connected to a tripping stop (14) on its side, and another of the side plates (2) is fixedly connected to a closing stop (15) on its side.

6. The disconnecting switch of an outdoor vacuum circuit breaker according to claim 5, characterized in that: Two elastic telescopic rods (16) are fixedly connected to the side of one of the side plates (2). One of the elastic telescopic rods (16) is fixedly connected to a tripping block (17) at the end away from the side plate (2), and the other elastic telescopic rod (16) is fixedly connected to a closing block (18) at the end away from the side plate (2).

7. The disconnecting switch of an outdoor vacuum circuit breaker according to claim 6, characterized in that: The opening stop block (17) and closing stop block (18) are both trapezoidal in shape, and the inclined surfaces of the opening stop block (17) and closing stop block (18) are inclined to the ground.

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