An intelligent residual current circuit breaker

Abstract

The utility model relates to the technical field of circuit breaker, specifically disclose an intelligent leakage circuit breaker, including circuit breaker no.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, specifically an intelligent residual current circuit breaker. Background Technology

[0002] A circuit breaker is a switching device that can close, carry, and interrupt current under normal circuit conditions and can close, carry, and interrupt current under abnormal circuit conditions within a specified time.

[0003] In the prior art, such as application number 202122102939.7, there is a circuit breaker that is easy to splice. By combining multiple circuit breakers, the circuit breakers are tightly connected during use, are not easy to loosen, and are easy to splice, which effectively improves the practicality and convenience of the circuit breaker. Two limiting frames are installed in the middle of the aluminum sheet, and two second mounting holes are provided at the front end of each limiting frame. A fastening nut is installed in each of the second mounting holes. After tightening the fastening nut, the limiting frame can be fixed to limit the circuit breaker, which effectively improves the stability of the circuit breaker.

[0004] In the existing technology, combined circuit breakers are composed of individual modules to form a whole circuit breaker. After combination, the circuit breakers are divided into two types: electrically connected and electrically disconnected. Combining circuit breakers can effectively reduce the space occupied by the circuit breaker. However, the circuit breaker may leak current due to factors such as component aging and environmental factors. Once a single module of the combined circuit breaker leaks current, the leakage current is conducted to other modules through the circuit breaker casing or internal metal structure, and the entire circuit breaker will burn out at the same time. Utility Model Content

[0005] The purpose of this invention is to provide an intelligent residual current circuit breaker to solve the problems in the prior art.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A smart residual current circuit breaker includes a circuit breaker 1, and circuit breakers 2 are symmetrically arranged on the left and right sides of the circuit breaker 1. A disassembly mechanism is provided on the rear side of the circuit breaker 2 and the circuit breaker 1, and a linkage separation mechanism is provided on the rear side of the disassembly mechanism.

[0008] The linkage separation mechanism includes a movable guide rail located behind the disassembly mechanism. The movable guide rail has fixed grooves on both the upper and lower sides of its middle section. A movable block is slidably arranged inside the fixed groove. The middle of the movable block is fixedly connected to the middle of the movable guide rail by a bolt. Fixed blocks are symmetrically engaged on the left and right sides of the movable guide rail.

[0009] The circuit breaker one has symmetrical slots on the left and right sides inside, and a locking pin is engaged inside the slot. The locking pin is fixedly installed on the inside of the circuit breaker two. A spring is provided on the outside of the circuit breaker two. The inner side of the spring is tightly fitted with a slot. The slot is located on the outside of the slot, and the outer end of the spring is fixedly connected to the circuit breaker two.

[0010] Preferably, the disassembly mechanism includes a plug block disposed on the rear side of the middle part of circuit breaker one and circuit breaker two, and the outer side of the plug block is engaged with a socket.

[0011] Preferably, the socket is located inside the plug block, the rear end of the plug block is fixedly connected to the movable block, and the plug block, the socket, and the circuit breaker are fixed with bolts. Similarly, the plug block, the socket, and the circuit breaker are also fixed with bolts.

[0012] Preferably, limit components are provided on the left and right sides of the outer side of the movable guide rail.

[0013] Preferably, the limiting component includes electromagnetic slide rails symmetrically arranged inside the moving guide rail.

[0014] Preferably, the electromagnetic slide rail has a slider inside, and the inner side of the slider is tightly fitted with the second circuit breaker.

[0015] The beneficial effects of this utility model are:

[0016] 1. This utility model, by setting up a linkage separation mechanism, allows individual circuit breakers to be spliced ​​together to form a complete circuit breaker. Elastic locking pins and moving guide rails are set on the outside of each individual circuit breaker, enabling multiple circuit breakers to be quickly spliced ​​together through a simple plug-in structure, reducing space occupation. Limiting blocks are set on both sides of the spliced ​​circuit breaker, and these limiting blocks are connected to the electromagnetic guide rail. Simultaneously, a zero-sequence current transformer is installed inside the circuit breaker to detect leakage. Once a leakage is detected in a single module, the limiting blocks on both sides of the circuit breaker will move, causing the circuit breaker to separate. Thus, even if a single circuit breaker leaks current, it will not cause other circuit breakers to burn out.

[0017] 2. This utility model, by setting up a disassembly mechanism, facilitates the disassembly of a single circuit breaker from the front side of the moving guide rail. Once a single circuit breaker malfunctions, it can be removed independently without disassembling adjacent circuit breakers, allowing for quick maintenance of the faulty circuit breaker. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a front view structural diagram of the circuit breaker of this utility model;

[0020] Figure 2 This is a rear view schematic diagram of the circuit breaker structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the connection structure of the circuit breaker I, the linkage separation mechanism and the disassembly mechanism of the present utility model;

[0022] Figure 4 This is a schematic diagram of the connection structure of the moving guide rail, fixed groove and moving block of the circuit breaker of this utility model;

[0023] Figure 5 This is a schematic diagram of the circuit breaker slot and card slot connection structure of this utility model;

[0024] Figure 6 This is a schematic diagram of the connection structure of the circuit breaker locking pin and spring of this utility model;

[0025] Figure 7 This is a schematic diagram of the connection structure of the circuit breaker plug and bolt of this utility model.

[0026] The attached figures are labeled as follows:

[0027] 1. Circuit breaker one; 11. Circuit breaker two; 2. Linkage separation mechanism; 21. Moving guide rail; 22. Fixed slot; 23. Moving block; 24. Bolt one; 25. Fixed block; 26. Slot; 27. Slot; 28. Locking pin; 29. ​​Spring; 3. Disassembly mechanism; 31. Insertion block; 32. Insertion port; 33. Insertion block; 34. Bolt two; 4. Limiting assembly; 41. Slider; 42. Electromagnetic slide rail. Detailed Implementation

[0028] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] To address the problems existing in the prior art, this embodiment provides the following technical solution: an intelligent residual current circuit breaker, comprising circuit breaker 1 and circuit breaker 2 11. An interlocking separation mechanism 2 is externally installed on both circuit breaker 1 and circuit breaker 2 11, facilitating the insertion of multiple circuit breakers 2 11 into circuit breaker 1 1 from both left and right directions. A zero-sequence current transformer is internally installed in both circuit breaker 1 1 and circuit breaker 2 11 to detect leakage current. After circuit breaker 2 11 and circuit breaker 1 1 are connected, a... Once a leakage current is detected in circuit breaker 1 or circuit breaker 2, multiple circuit breakers 2 will spring out from the left and right sides of circuit breaker 1, preventing the leakage current of one circuit breaker from damaging other circuit breakers. At the same time, a disassembly mechanism 3 is set between circuit breaker 1 and circuit breaker 2 and the linkage separation mechanism 2, which facilitates the disassembly of a single circuit breaker 1 or circuit breaker 2 from the front side of the linkage separation mechanism 2, allowing for quick maintenance of the damaged single circuit breaker.

[0030] like Figures 1-7 As shown, it includes circuit breaker 1, and multiple sets of circuit breaker 2 11 are symmetrically arranged on the left and right sides of circuit breaker 1. Disassembly mechanism 3 is provided on the rear side of both circuit breaker 2 11 and circuit breaker 1. Linkage separation mechanism 2 is provided on the rear side of disassembly mechanism 3.

[0031] The disassembly mechanism 3 includes a plug block 33 located at the rear of the middle of circuit breaker 1 and circuit breaker 2. A socket 32 ​​is engaged with the outer side of the plug block 33. The socket 32 ​​is located inside the plug block 31. The rear end of the plug block 31 is fixedly connected to a moving block 23 located in the linkage separation mechanism 2. When the plug block 33 engages with the socket 32, circular holes with the same diameter are provided in the middle of the plug block 33, the socket 32, the plug block 31, and the rear interior of circuit breaker 2 and circuit breaker 1. Both circuit breaker 1 and circuit breaker 2 are provided with threaded holes on the upper rear side of their interior. Bolt 2 34 can be inserted into the plug block 33, plug 32, plug block 31, and the round and threaded holes of circuit breaker 1 and circuit breaker 2 11. Bolt 2 34 is provided with threads on its upper side. By rotating bolt 2 34, bolt 2 34 can be firmly connected to the threaded holes on the rear side of circuit breaker 1 and circuit breaker 2 11. At the same time, the threads of both are set to fine threads, which can effectively enhance the self-locking property after the connection between the two.

[0032] Each circuit breaker 11 and the connection between the plug block 33 and the plug block 31 on the rear side of the circuit breaker 1 is limited by a bolt 2 34. If a circuit breaker 1 or a single circuit breaker 11 malfunctions, the corresponding malfunctioning circuit breaker 1 or circuit breaker 11 can be located, the bolt 2 34 can be unscrewed, and the plug block 31, the socket 32, the round hole of the plug block 33, and the round hole and threaded hole of the circuit breaker 1 and circuit breaker 2 can be pulled out. Then, the circuit breaker 1 and circuit breaker 2 can be pulled forward, which will disengage the plug block 33 installed on the rear side of the circuit breaker 1 and circuit breaker 2 from the socket 32 ​​opened inside the plug block 31. This operation facilitates the maintenance of a single circuit breaker 1 or circuit breaker 2.

[0033] The moving block 23 is fixedly installed in the linkage separation mechanism 2 via the plug-in block 31. The linkage separation mechanism 2 includes a moving guide rail 21 located behind the disassembly mechanism 3. The moving guide rail 21 has fixed grooves 22 on both the upper and lower sides of the middle part. The moving block 23 is slidably arranged inside the fixed grooves 22. The moving guide rail 21 has trapezoidal grooves symmetrically arranged on the left and right sides. The trapezoidal grooves are engaged with the trapezoidal blocks arranged inside the fixed block 25, that is, the fixed block 25 is firmly set on the left and right sides of the moving guide rail 21.

[0034] In addition, limit components 4 are provided on the left and right sides of the outside of the moving guide rail 21. The limit components 4 include electromagnetic slide rails 42 symmetrically arranged inside the moving guide rail 21, and sliders 41 are slidably arranged inside the electromagnetic slide rails 42.

[0035] The connection movement between slider 41 and electromagnetic rail 42 mainly relies on electromagnetic force. The electromagnetic rail 42 generates a magnetic field through the built-in electromagnetic coil. When current passes through, it interacts with the conductive material inside slider 41, causing slider 41 to slide inside electromagnetic rail 42. When circuit breaker 1 and circuit breaker 2 11 need to be installed, the controller can control slider 41 to slide to the outermost side of electromagnetic rail 42, so that the length of fixing groove 22 is convenient for subsequent insertion of circuit breaker 1 and circuit breaker 2 11.

[0036] Then remove the fixing blocks 25 that are engaged on the left and right sides of the moving guide rail 21 and pull them out. First, insert a single moving block 23 into the fixing groove 22 opened inside the moving guide rail 21. In addition, a square groove is opened inside the slider 41. The size of the square groove is larger than that of the moving block 23, so it does not affect the moving block 23 from being inserted into the fixing groove 22. After the moving block 23 is inserted, slide it to move it to the middle of the moving guide rail 21. A threaded hole is provided in the middle of the moving guide rail 21, and a round hole is provided in the middle of the moving block 23. When the moving block 23 moves to the middle of the moving guide rail 21, the round hole in the middle of the moving block 23 will fit with the threaded hole provided inside the moving guide rail 21. Then, insert the bolt 24 into the inside of both to tighten and limit the position. Then, install the circuit breaker 1 in front of the middle moving block 23 to firmly fix and limit the circuit breaker 1 in the middle of the moving guide rail 21.

[0037] After the circuit breaker 1 is fixed, multiple movable blocks 23 can be inserted into the fixed groove 22 in the middle of the movable guide rail 21 from the left and right sides. Then, in the same way as installing the circuit breaker 1, the circuit breaker 2 11 is installed on the front side of the movable block 23. After the circuit breaker 2 11 is installed, the circuit breaker 2 11 can be plugged in from the left and right sides of the circuit breaker 1.

[0038] The circuit breaker 11 has symmetrical slots 27 inside, and a locking pin 28 is provided on one side. When the circuit breaker 11 is inserted from the left and right sides of the circuit breaker 11, the locking pin 28 on one side of the circuit breaker 11 is inserted into the slots 27 inside the circuit breaker 11.

[0039] Meanwhile, a slot 27 is also provided on the other side of the second circuit breaker 11 to facilitate the connection of different module circuit breakers 11. In addition, a spring 29 is provided on the outside of the locking pin 28. When the locking pin 28 is inserted into the slot 27, the spring 29 is in a compressed state. The inner side of the spring 29 will tightly fit the slot 26. The slot 26 is located on the outside of the slot 27, and its diameter is slightly larger than that of the slot 27. The outer end of the spring 29 is fixedly connected to the second circuit breaker 11.

[0040] At this time, the controller of the electromagnetic slide rail 42 is turned on, so that the slider 41 slides inward and fits against the left and right sides of the outside of the assembled circuit breaker 2 11, thereby limiting the assembled circuit breaker 2 11. The circuit breaker 1 and the circuit breaker 2 11 can be spliced ​​and installed on the front side of the linkage separation mechanism 2. The moving guide rail 21 in the linkage separation mechanism 2 has installation holes on the left and right sides, which facilitates the installation of the circuit breaker in the power distribution control box.

[0041] Zero-sequence current transformers (model HY-LJK-φ120) are installed inside circuit breakers 1 and 2. These transformers monitor changes in the three-phase current vector and zero-sequence current, enabling intelligent detection of cable leakage in circuit breakers 1 and 2. Once a leakage is detected, the transformers convert it into a voltage signal via an amplifier circuit, which is then processed into a digital signal by an analog-to-digital converter (ADC). This signal is transmitted to the controller of the electromagnetic slide rail 42 via a communication interface. The electromagnetic slide rail 42 is designed to resist electromagnetic interference and can control the slider 41 to slide outward. At this time, the slider 41 will disengage from the contact with circuit breaker 2. Then, the spring 29 between the locking pin 28 and the locking groove 27 on one side of circuit breaker 2 will be compressed and stretched without the limit of the slider 41, causing the entire circuit breaker 2 to move outward in linkage, thus disengaging from the connection with circuit breaker 1.

[0042] Once the problem is identified in a single circuit breaker module, it can be disassembled and repaired individually.

[0043] The working principle of this intelligent residual current circuit breaker is as follows: Circuit breaker 1 is fixedly installed on the front side of the middle of the linkage separation mechanism 2, and then circuit breaker 2 11 is inserted and installed from the left and right sides of circuit breaker 11 respectively. A flexible plug-in connection is used between circuit breaker 11 and circuit breaker 2 11. After connection, a limiting component 4 is used for limiting, which effectively reduces the space occupied by circuit breaker 11 and circuit breaker 2 11 after insertion. Zero-sequence current transformers are installed inside circuit breaker 11 and circuit breaker 2 11 to control the current flow. The leakage current of the circuit breaker is monitored. Once leakage current is detected, a signal is transmitted to the controller of the electromagnetic slide rail 42 in the limit component 4, causing the slider 41 to move and disengage from the contacting circuit breaker 11. Then, the circuit breakers 11 on both sides of the circuit breaker 1 will move outward synchronously to disengage as a whole. This can effectively prevent leakage current from a single circuit breaker from affecting other circuit breakers. In addition, a disassembly mechanism 3 is provided between the circuit breaker 1 and the circuit breaker 11 and the linkage separation mechanism 2 to facilitate the disassembly and maintenance of individual circuit breakers.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An intelligent residual current circuit breaker, characterized in that: The circuit includes a first circuit breaker (1), and a second circuit breaker (11) is symmetrically arranged on the left and right sides of the first circuit breaker (1). A disassembly mechanism (3) is arranged on the rear side of the second circuit breaker (11) and the first circuit breaker (1). A linkage separation mechanism (2) is arranged on the rear side of the disassembly mechanism (3). The linkage separation mechanism (2) includes a movable guide rail (21) located behind the disassembly mechanism (3). The movable guide rail (21) has fixed grooves (22) on both the upper and lower sides of the middle. A movable block (23) is slidably arranged inside the fixed groove (22). The middle of the movable block (23) is fixedly connected to the middle of the movable guide rail (21) by a bolt (24). Fixed blocks (25) are symmetrically engaged on the left and right sides of the movable guide rail (21). The circuit breaker one (1) has symmetrical slots (27) inside. The slots (27) are connected to the locking pins (28). The locking pins (28) are fixedly installed on the inner side of the circuit breaker two (11). A spring (29) is provided on the outer side of the circuit breaker two (11). The inner side of the spring (29) is tightly fitted with a slot (26). The slot (26) is located on the outer side of the slots (27). The outer end of the spring (29) is fixedly connected to the circuit breaker two (11).

2. The intelligent residual current circuit breaker according to claim 1, characterized in that, The disassembly mechanism (3) includes a plug (33) located on the rear side of the middle part of the circuit breaker one (1) and the circuit breaker two (11), and the plug (33) has a socket (32) engaged on its outer side.

3. The intelligent residual current circuit breaker according to claim 2, characterized in that, The socket (32) is located inside the plug block (31). The rear end of the plug block (31) is fixedly connected to the moving block (23). The plug block (31), the socket (32) and the circuit breaker (1) are fixed with bolts (34). The plug block (31), the socket (32) and the circuit breaker (11) are also fixed with bolts (34).

4. The intelligent residual current circuit breaker according to claim 1, characterized in that, Limiting components (4) are provided on the left and right sides of the outside of the moving guide rail (21).

5. The intelligent residual current circuit breaker according to claim 4, characterized in that, The limiting component (4) includes electromagnetic slide rails (42) symmetrically arranged inside the moving guide rail (21).

6. The intelligent residual current circuit breaker according to claim 5, characterized in that, The electromagnetic slide rail (42) has a slider (41) slidably mounted inside, and the inner side of the slider (41) is tightly fitted with the second circuit breaker (11).

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