Novel high-voltage vacuum intelligent circuit breaker

Abstract

The utility model discloses a novel high-voltage vacuum intelligent circuit breaker, which comprises a shell, a multi-connecting-rod circuit breaking mechanism and a direct-drive mechanism, the left side surface and the right side surface of the shell are respectively provided with a side edge sealing shell; the multi-connecting-rod circuit breaking mechanism comprises a first rotating shaft, first connecting rods, a second connecting rod, a third connecting rod, a connecting plate, a second rotating shaft, a fourth connecting rod, an extension arm, a sliding rod and a push-pull arm, the first rotating shaft is rotationally connected to the lower side between the left inner wall and the right inner wall of the two side edge sealing shells, and the outer arc surface of the first rotating shaft is fixedly connected with the first connecting rods which are evenly distributed; the right ends of the three first connecting rods are rotatably connected with third connecting rods respectively, the middle portions of the three third connecting rods are fixedly connected with the left side face of a connecting plate, a second rotating shaft is rotatably connected to the middle portion between the left inner wall and the right inner wall of the two side edge sealing shells, and the upper ends of the third connecting rods are rotatably connected with fourth connecting rods. And the circuit breaking operation can be completed intelligently.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, specifically a novel high-voltage vacuum intelligent circuit breaker. Background Technology

[0002] High-voltage vacuum circuit breakers are named for their high-vacuum nature, which is both the arc-extinguishing medium and the insulating medium between the contacts after arc extinguishing. They are characterized by their small size and light weight.

[0003] In the prior art, patent CN202221936416.0 discloses a novel high-voltage vacuum circuit breaker, including a high-voltage vacuum circuit breaker body and a base disposed at the lower end of the high-voltage vacuum circuit breaker body. The upper end of the base is symmetrically provided with two sets of sliding grooves, and a slide frame is provided on the inner side of the sliding groove. Limiting members are embedded at the upper and lower ends of the slide frame. The limiting members are attached to the upper and lower end faces of the base and are fixedly connected to the high-voltage vacuum circuit breaker body. A first rubber pad is provided at both the front and rear ends of the sliding groove, and a second rubber pad is provided at both the front and rear ends of the slide frame. The second rubber pad is attached to the first rubber pad.

[0004] The aforementioned vacuum circuit breakers have some minor issues. For example, they only address the problem of installation stability. When high-voltage circuit current flows through, it can affect the electrical components of the circuit breaker itself, resulting in a low safety factor. Furthermore, the circuit breaker lacks an effective drive mechanism and has a poor level of intelligence. Therefore, we propose a novel high-voltage vacuum intelligent circuit breaker. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a new type of high-voltage vacuum intelligent circuit breaker that can intelligently complete circuit breaking operations and effectively solve the problems in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel high-voltage vacuum intelligent circuit breaker, comprising a housing, a multi-link circuit breaker mechanism, and a direct drive mechanism;

[0007] The outer casing has side sealing shells on its left and right sides respectively;

[0008] Multi-link circuit breaker mechanism: It includes a first rotating shaft, a first connecting rod, a second connecting rod, a third connecting rod, a connecting plate, a second rotating shaft, a fourth connecting rod, an extension arm, a slide rod, and a push-pull arm. The first rotating shaft is rotatably connected to the lower side between the left and right inner walls of the two side sealing shells. The outer arc surface of the first rotating shaft is fixedly connected to the evenly distributed first connecting rods. The right ends of the three first connecting rods are respectively rotatably connected to the third connecting rods. The middle parts of the three third connecting rods are all fixedly connected to the left side of a connecting plate. The middle part between the left and right inner walls of the two side sealing shells is rotatably connected to the second rotating shaft. The upper ends of the third connecting rods are rotatably connected to the fourth connecting rods. The middle parts of the three fourth connecting rods are all fixedly connected to the outer arc surface of a second rotating shaft. The left ends of the three first connecting rods are respectively rotatably connected to the second connecting rods. The upper ends of the three second connecting rods are respectively rotatably connected to the push-pull arm. The outer arc surface of the second rotating shaft is symmetrically fixedly connected to the front and back of the second rotating shaft. The slide rod is fixedly connected between the two extension arms.

[0009] Direct drive mechanism: It is slidably connected to the outer arc surface of the slide bar, and can intelligently complete the circuit breaking operation.

[0010] Furthermore, a microcontroller is provided on the front side of the housing. The input terminal of the microcontroller is electrically connected to an external power source to control the normal operation of various electrical appliances.

[0011] Furthermore, the rear end of the housing is provided with uniformly distributed vacuum interrupters. The lower contacts of the vacuum interrupters are fixedly connected to the upper ends of the push-pull arms corresponding to the longitudinal positions. The input of the vacuum interrupters is connected to an external power supply. The upper surface of the housing is provided with uniformly distributed current transformers. The input ends of the current transformers are electrically connected to the output ends of the vacuum interrupters corresponding to the lateral positions. The output ends of the three current transformers are electrically connected to an external current transmission device. The current transformers are bidirectionally electrically connected to the microcontroller to realize the function of high-voltage current flow.

[0012] Furthermore, the multi-link circuit breaker mechanism also includes a first spring and a second spring. The first springs are symmetrically fixedly connected to the lower surface of the connecting plate. The lower ends of the two first springs are fixedly connected to the lower side wall of a housing. The rear side wall of the front first link and the front side wall of the rear first link are respectively fixedly connected to transverse mounting plates. The upper right side of the two transverse mounting plates are respectively fixedly connected to the second springs. The upper ends of the two second springs are respectively fixedly connected to the lower right side of the fourth link corresponding to the longitudinal position, providing power for the link to reset.

[0013] Furthermore, the direct drive mechanism includes a third rotating shaft, a cam, an electrical mounting box, a worm gear, and an energy storage motor. The third rotating shaft is rotatably connected to the front side between the two side sealing shells. The electrical mounting box is located on the upper left side of the front side of the rear side sealing shell. A worm gear is rotatably connected between the left and right inner walls of the electrical mounting box. A worm wheel is located on the rear side of the outer arc surface of the third rotating shaft, and the worm wheel meshes with the worm gear. An energy storage motor is located on the left side wall of the electrical mounting box. The output shaft of the energy storage motor is fixedly connected to the left end of the worm gear. A cam is located in the middle of the outer arc surface of the third rotating shaft. The outer arc surface of the cam is slidably connected to the outer arc surface of the slide rod. The input end of the energy storage motor is electrically connected to the output end of the microcontroller to realize the function of intelligent control circuit breaking.

[0014] Furthermore, the four corners of the rear side of the housing are provided with L-shaped mounting feet to enable installation.

[0015] Furthermore, the upper surfaces of the two horizontal mounting plates are respectively equipped with touch sensors, and the two touch sensors are bidirectionally electrically connected to the microcontroller to realize real-time monitoring of the linkage mechanism.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This novel high-voltage vacuum intelligent circuit breaker has the following advantages:

[0017] 1. Using a multi-link transmission method, the push-pull arm is driven to move linearly upward and downward. In conjunction with the elasticity structure of the spring, the vacuum interrupter is driven to perform circuit breaking operations. The multi-link transmission has better performance and is safer, effectively preventing the problem of high-voltage current leakage.

[0018] 2. The eccentric structure of the cam is used to drive the subsequent multi-link structure, and a self-locking worm gear structure is used to drive the cam to rotate. The locking effect is good when the circuit breaker is in the open or closed state, and the circuit breaking operation can be completed intelligently. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the outer shell of this utility model;

[0021] Figure 3 This is a schematic diagram of the multi-link circuit breaker mechanism of this utility model.

[0022] In the diagram: 1. Housing; 2. Microcontroller; 3. Vacuum interrupter; 4. Multi-link circuit breaker mechanism; 401. First shaft; 402. First link; 403. Second link; 404. Third link; 405. Connecting plate; 406. Second shaft; 407. Fourth link; 408. Extension arm; 409. Slide rod; 410. First spring; 411. Second spring; 412. Push-pull arm; 5. Point touch sensor; 6. Side sealing shell; 7. L-shaped mounting foot; 8. Direct drive mechanism; 81. Third shaft; 82. Cam; 83. Electrical mounting box; 84. Worm gear; 85. Energy storage motor; 9. Current transformer. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-3 This embodiment provides a technical solution: a novel high-voltage vacuum intelligent circuit breaker, comprising a housing 1, a multi-link circuit breaker mechanism 4, and a direct drive mechanism 8;

[0025] Housing 1: Side sealing shells 6 are provided on its left and right sides respectively. A microcontroller 2 is provided on the front side of housing 1. The input terminal of the microcontroller 2 is electrically connected to an external power supply. L-shaped mounting feet 7 are provided at the four corners of the rear side of housing 1. When the intelligent circuit breaker is needed, the external high-voltage circuit can be connected to the input terminal of the vacuum interrupter 3. At this time, high-voltage current can be flowed, and the operation of the microcontroller 2 and the three current transformers 9 can be controlled.

[0026] Multi-link circuit breaker mechanism 4: It includes a first rotating shaft 401, a first connecting rod 402, a second connecting rod 403, a third connecting rod 404, a connecting plate 405, a second rotating shaft 406, a fourth connecting rod 407, an extension arm 408, a slide rod 409, and a push-pull arm 412. The first rotating shaft 401 is rotatably connected to the lower side between the left and right inner walls of the two side sealing shells 6. The outer arc surface of the first rotating shaft 401 is fixedly connected to the evenly distributed first connecting rods 402. The right ends of the three first connecting rods 402 are respectively rotatably connected to the third connecting rods 404. The middle of each of the three third connecting rods 404 is fixedly connected to the left side surface of a connecting plate 405. The second rotating shaft 406 is rotatably connected to the middle between the left and right inner walls of the two side sealing shells 6. The upper ends of the three-link rod 404 are rotatably connected to the fourth link 407. The middle parts of the three fourth links 407 are fixedly connected to the outer arc surface of a second rotating shaft 406. The left ends of the three first links 402 are rotatably connected to the second links 403. The upper ends of the three second links 403 are rotatably connected to the push-pull arms 412. The outer arc surface of the second rotating shaft 406 is symmetrically fixedly connected to the extension arms 408. A slide rod 409 is fixedly connected between the two extension arms 408. The rear end of the outer casing 1 is provided with uniformly distributed vacuum interrupters 3. The lower contacts of the vacuum interrupters 3 are fixedly connected to the upper ends of the push-pull arms 412 corresponding to the longitudinal positions. The input power of the vacuum interrupters 3 is connected to an external power source. The upper surface of the outer casing 1 is provided with... The current transformers 9 are evenly distributed. The input terminals of the current transformers 9 are electrically connected to the output terminals of the vacuum interrupter 3 corresponding to the lateral positions. The output terminals of the three current transformers 9 are electrically connected to external current transmission equipment. The current transformers 9 are bidirectionally electrically connected to the microcontroller 2. The multi-link circuit breaker mechanism 4 also includes a first spring 410 and a second spring 411. The first spring 410 is symmetrically fixed to the lower side of the lower surface of the connecting plate 405. The lower ends of the two first springs 410 are fixedly connected to the lower side wall of a housing 1. The rear side wall of the front first link 402 and the front side wall of the rear first link 402 are respectively fixedly connected to lateral mounting plates. The upper right sides of the two lateral mounting plates are respectively fixedly connected to the second spring 410. Spring 411, the upper ends of the two second springs 411 are fixedly connected to the lower right side of the fourth link 407 corresponding to the longitudinal position. The upper surfaces of the two horizontal mounting plates are respectively provided with touch sensors 5. The two touch sensors 5 are respectively bidirectionally electrically connected to the microcontroller 2. At this time, under the influence of the contraction force of the first spring 410 and the second spring 411, the extension arm 408 will be driven to rotate at a specified angle around the axis of the second rotating shaft 406. Then, through the fourth link 407 and the third link 404, the three first links 402 will be driven to rotate at a specified angle around the first rotating shaft 401. Then, through the second link 403, the push-pull arm 412 will be pulled down to move downward, so that the vacuum interrupter 3 disconnects the passage.

[0027] Direct drive mechanism 8: It is slidably connected to the outer arc surface of slide bar 409. Direct drive mechanism 8 includes a third rotating shaft 81, cam 82, electrical mounting box 83, worm gear 84, and energy storage motor 85. The third rotating shaft 81 is rotatably connected to the front side between the two side sealing shells 6. The electrical mounting box 83 is located on the upper left side of the front side of the rear side sealing shell 6. The worm gear 84 is rotatably connected between the left and right inner walls of the electrical mounting box 83. A worm wheel is located on the rear side of the outer arc surface of the third rotating shaft 81, and the worm wheel meshes with the worm gear 84. The energy storage motor 85 is located on the left side wall of the electrical mounting box 83. The output shaft of the energy storage motor 85 is fixedly connected to the left end of the worm gear 84. A cam 82 is located in the middle of the outer arc surface of the third rotating shaft 81. The outer arc surface of the cam 82 is slidably connected to the outer arc surface of slide bar 409. The input end of the energy storage motor 85 is electrically connected to the output end of the microcontroller 2. When the current is mutually inducted... When device 9 detects an abnormal current, microcontroller 2 can control the energy storage motor 85 to operate, thereby driving the worm gear 84 to rotate a specified number of times, and then driving the third shaft 81 to rotate at a specified angle through the worm wheel. If the touch sensor 5 touches the outer surface of the extension arm 408, it will return the touch information to microcontroller 2 in the form of an electrical signal. If the electrical signal is abnormal, it indicates that there is an abnormality in the linkage structure, which needs to be disassembled for repair. The outer arc surface of cam 82 and the outer arc surface of slide rod 409 are still tightly attached, with the distal end of the outer arc surface of cam 82 attached to the outer arc surface of slide rod 409. At this time, microcontroller 2 can be controlled again to operate the energy storage motor 85, with the proximal end of the outer arc surface of cam 82 attached to the outer arc surface of slide rod 409. At this time, the push-pull arm 412 will move upward, and the vacuum interrupter 3 will form a passage to continue the subsequent power transmission operation.

[0028] The working principle of this novel high-voltage vacuum intelligent circuit breaker is as follows: When the intelligent circuit breaker is needed, the external high-voltage circuit can be connected to the input terminal of the vacuum interrupter 3, allowing high-voltage current to flow. At this time, the microcontroller 2 and three current transformers 9 can be controlled to operate. When the current transformers 9 detect an abnormal current, the microcontroller 2 controls the energy storage motor 85 to operate, thereby driving the worm gear 84 to rotate a specified number of times, which in turn drives the third shaft 81 to rotate at a specified angle via the worm wheel. If the touch sensor 5 touches the outer surface of the extension arm 408, it will return the touch information to the microcontroller 2 as an electrical signal. If the electrical signal is abnormal, it indicates that the linkage structure is malfunctioning and needs to be disassembled for repair. The outer arc surface of the cam 82 and the outer arc surface of the slide rod 409 are... However, the outer arc surface of the cam 82 is tightly fitted, with the distal end of the outer arc surface of the slide rod 409. At this time, under the influence of the contraction force of the first spring 410 and the second spring 411, the extension arm 408 will rotate at a specified angle around the axis of the second rotating shaft 406. Then, through the fourth link 407 and the third link 404, the three first links 402 will rotate at a specified angle around the first rotating shaft 401. Then, through the second link 403, the push-pull arm 412 will be pulled down to move downward, so that the vacuum interrupter 3 disconnects the passage and completes the circuit breaking operation. At this time, the microcontroller 2 can be controlled again to operate the energy storage motor 85. The proximal end of the outer arc surface of the cam 82 will be fitted with the outer arc surface of the slide rod 409. At this time, the push-pull arm 412 will move upward, and the vacuum interrupter 3 will form a passage to continue the subsequent power transmission operation.

[0029] It is worth noting that the microcontroller 2 disclosed in the above embodiments is specifically model S7-200. The vacuum interrupter 3, the touch sensor 5, the energy storage motor 85, and the current transformer 9 can be freely configured according to the actual application scenario. It is recommended that the vacuum interrupter 3 be a TD21-40.5 / 1600-20 vacuum interrupter, the touch sensor 5 be an LFC-09A high-precision miniature pressure sensor, the energy storage motor 85 be a 55ZY-6A circuit breaker energy storage motor, and the current transformer 9 be an LCWD1-35100 / 5 current transformer. The microcontroller 2 controls the operation of the touch sensor 5, the energy storage motor 85, and the current transformer 9 using methods commonly used in the prior art.

[0030] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A novel high-voltage vacuum intelligent circuit breaker, characterized in that: It includes a housing (1), a multi-link circuit breaker mechanism (4), and a direct drive mechanism (8); Outer shell (1): It has side sealing shells (6) on its left and right sides respectively; Multi-link circuit breaker mechanism (4): It includes a first rotating shaft (401), a first connecting rod (402), a second connecting rod (403), a third connecting rod (404), a connecting plate (405), a second rotating shaft (406), a fourth connecting rod (407), an extension arm (408), a slide rod (409), and a push-pull arm (412). The first rotating shaft (401) is rotatably connected to the lower side between the left and right inner walls of the two side sealing shells (6). The outer arc surface of the first rotating shaft (401) is fixedly connected with evenly distributed first connecting rods (402). The right ends of the three first connecting rods (402) are respectively rotatably connected to the third connecting rods (404). The middle part of each of the three third connecting rods (404) is connected to a connecting rod. The left side of the plate (405) is fixedly connected, and the middle of the left and right inner walls of the two side sealing shells (6) is rotatably connected to the second rotating shaft (406). The upper end of the third connecting rod (404) is rotatably connected to the fourth connecting rod (407). The middle of the three fourth connecting rods (407) is fixedly connected to the outer arc surface of a second rotating shaft (406). The left ends of the three first connecting rods (402) are respectively rotatably connected to the second connecting rod (403). The upper ends of the three second connecting rods (403) are respectively rotatably connected to the push-pull arm (412). The front and back of the outer arc surface of the second rotating shaft (406) are symmetrically fixedly connected to the extension arm (408). The two extension arms (408) are fixedly connected to the slide rod (409). Direct drive mechanism (8): It is slidably connected to the outer arc surface of the slide bar (409).

2. The novel high-voltage vacuum intelligent circuit breaker according to claim 1, characterized in that: The front side of the housing (1) is equipped with a microcontroller (2), and the input terminal of the microcontroller (2) is electrically connected to an external power source.

3. A novel high-voltage vacuum intelligent circuit breaker according to claim 2, characterized in that: The rear end of the outer shell (1) is provided with uniformly distributed vacuum interrupters (3). The lower contacts of the vacuum interrupters (3) are fixedly connected to the upper ends of the push-pull arms (412) corresponding to the longitudinal position. The input of the vacuum interrupters (3) is connected to an external power supply. The upper surface of the outer shell (1) is provided with uniformly distributed current transformers (9). The input ends of the current transformers (9) are electrically connected to the output ends of the vacuum interrupters (3) corresponding to the transverse position. The output ends of the three current transformers (9) are electrically connected to an external current transmission device. The current transformers (9) are bidirectionally connected to the microcontroller (2).

4. A novel high-voltage vacuum intelligent circuit breaker according to claim 2, characterized in that: The multi-link circuit breaker mechanism (4) further includes a first spring (410) and a second spring (411). The first spring (410) is symmetrically fixedly connected to the lower side of the lower surface of the connecting plate (405). The lower ends of the two first springs (410) are fixedly connected to the lower side wall of a housing (1). The rear side wall of the front first link (402) and the front side wall of the rear first link (402) are respectively fixedly connected to transverse mounting plates. The upper right side of the two transverse mounting plates is fixedly connected to the second spring (411). The upper ends of the two second springs (411) are respectively fixedly connected to the lower right side of the fourth link (407) corresponding to the longitudinal position.

5. A novel high-voltage vacuum intelligent circuit breaker according to claim 2, characterized in that: The direct drive mechanism (8) includes a third rotating shaft (81), a cam (82), an electrical mounting box (83), a worm gear (84), and an energy storage motor (85). The third rotating shaft (81) is rotatably connected to the front side between two side sealing shells (6). The electrical mounting box (83) is provided on the upper left side of the front side of the rear side sealing shell (6). The worm gear (84) is rotatably connected between the left and right inner walls of the electrical mounting box (83). A worm wheel is provided on the rear side of the outer arc surface of the third rotating shaft (81). The worm wheel is meshed with the worm gear (84). The energy storage motor (85) is provided on the left side wall of the electrical mounting box (83). The output shaft of the energy storage motor (85) is fixedly connected to the left end of the worm gear (84). A cam (82) is provided in the middle of the outer arc surface of the third rotating shaft (81). The outer arc surface of the cam (82) is slidably connected to the outer arc surface of the slide bar (409). The input end of the energy storage motor (85) is electrically connected to the output end of the microcontroller (2).

6. A novel high-voltage vacuum intelligent circuit breaker according to claim 1, characterized in that: The four corners of the rear side of the outer casing (1) are respectively provided with L-shaped mounting feet (7).

7. A novel high-voltage vacuum intelligent circuit breaker according to claim 4, characterized in that: The upper surfaces of the two horizontal mounting plates are respectively equipped with touch sensors (5), and the two touch sensors (5) are bidirectionally electrically connected to the microcontroller (2).

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