Shunt tripping structure of intelligent circuit breaker

Abstract

The utility model discloses a shunt tripping structure of an intelligent circuit breaker, which comprises an upper cover, a middle seat and a base, a shunt control module is arranged in an upper mounting cavity formed between the upper cover and the middle seat, and a main tripper is arranged in a lower mounting cavity formed between the middle seat and the base. The upper mounting cavity and the lower mounting cavity are distributed on the same side of the handle and are communicated up and down, the main tripper penetrates into the upper mounting cavity through a wire and is electrically connected with the shunt control module, and when the shunt tripping module receives an external electric signal, specified voltage is applied to the main tripper, so that the main tripper is driven to trigger the circuit breaker to be tripped and switched off. According to the technical scheme, the circuit breaker structure is reasonably optimized and arranged, the shunt control module is installed in the circuit breaker to be used in cooperation with a main release, the occupied space for installation is small, the structure is more compact, cost is reduced, and the use performance of products is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to an intelligent circuit breaker shunt tripping structure. Background Art

[0002] With the promotion of smart grids, the usage of smart circuit breaker products is increasing. This type of smart circuit breaker has the functions of normal connection and disconnection of distribution lines, as well as overload and short-circuit protection, and integrates high-precision and high-stability metering modules and controller modules, enabling it to have functions such as automatic topology identification, communication encryption, and rapid determination of low-voltage fault information.

[0003] In order to achieve the purpose of remotely controlling the circuit breaker to trip and open, a common practice is to install a shunt trip device on the circuit breaker. This shunt trip device is a device that performs remote tripping operations on the circuit breaker. The intelligent circuit breaker can be used in conjunction with external devices such as the fire control room through the shunt trip module. For example, the fire control room sends an electrical signal to the shunt trip device, and then the shunt trip device controls the circuit breaker to trip. The existing shunt trip device consists of a control circuit board and a shunt trip device. It is a type of electromagnetic tripping, and the function of controlled tripping of the circuit breaker is completed through an external electrical signal. However, the existing shunt trip module is usually installed externally on the side of the circuit breaker, which will increase the volume of the entire circuit breaker product, occupy a large installation space, and have a high installation cost. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the problem in the prior art that the shunt trip module is usually installed externally on the side of the circuit breaker, which increases the volume of the entire circuit breaker product, occupies a large installation space, and has a high installation cost.

[0005] In order to solve the above technical problems, the utility model provides an intelligent circuit breaker shunt tripping structure, comprising:

[0006] The housing structure comprises an upper cover, a middle seat and a base arranged in sequence from top to bottom, an upper installation cavity is formed between the upper cover and the middle seat, a lower installation cavity is formed between the middle seat and the base, and the upper installation cavity and the lower installation cavity are distributed on the same side of the handle and are connected up and down;

[0007] A shunt control module is installed on the middle seat and accommodated in the upper installation cavity;

[0008] A main trip device is installed on the base and accommodated in the lower installation cavity. The main trip device is inserted into the upper installation cavity through a wire and is electrically connected to the shunt control module. The shunt control module is used to drive the main trip device to trigger the circuit breaker to trip and open when receiving an external control signal.

[0009] As a preferred solution, a connecting hole penetrating and connecting the upper mounting cavity and the lower mounting cavity is provided on the middle seat, so that a wire passes through the connecting hole to connect the main release and the shunt control module.

[0010] As a preferred solution, a wiring slot is provided on the side wall of the middle seat, so that an external control line can pass through the wiring slot into the upper mounting cavity and be connected to the shunt control module.

[0011] As a preferred solution, the shunt control module includes a shunt control circuit board arranged in the upper mounting cavity.

[0012] As a preferred solution, the shunt control circuit board is fixed to the middle seat by a screw structure or a snap-fit ​​structure and is accommodated in the upper mounting cavity.

[0013] As a preferred solution, a side wall of the upper cover is provided with a blocking piece suitable for being inserted into the wiring slot, and the blocking piece includes a cutting portion that can expose a portion of the wiring slot after being sheared, and a shearing groove is formed between the cutting portion and the blocking piece.

[0014] As a preferred solution, the main release has a push rod structure that drives the traction rod of the circuit breaker to rotate when triggered, and the push rod structure includes an L-shaped driving end extending to one side of the traction rod and cooperating with the traction rod.

[0015] As a preferred solution, a groove structure for installing a controller is provided between the upper cover and the middle base. The controller is pluggable in the groove structure and connected to a main release. The main release can trip and open the circuit breaker under the drive of the controller.

[0016] Compared with the prior art, the technical solution of the utility model has the following advantages:

[0017] 1. In the intelligent circuit breaker shunt tripping structure provided by the utility model, the shunt control module is installed in the upper installation cavity between the middle seat and the upper cover, and the main trip is installed in the lower installation cavity between the base and the middle seat and is located below the shunt control module, so that the main trip is convenient to pass through the wire into the upper installation cavity and be electrically connected to the shunt control module. The shunt control module can be used in conjunction with external devices such as a fire control room. When the shunt tripping module receives an external electrical signal, a specified voltage is applied to the main tripping device, thereby driving the main tripping device to trigger the circuit breaker to trip and open, so as to realize remote control. The advantage of adopting this technical solution is that, since the main release is a part of the tripping structure of the circuit breaker itself, it can not only cooperate with the shunt control module to realize shunt tripping, but also play a role in short circuit, overload and other tripping protection. This design is achieved by optimizing the layout of the circuit breaker structure reasonably, eliminating the shunt release, and installing the shunt control module inside the circuit breaker for use with the main release. The installation occupies a small space, does not increase the volume of the circuit breaker itself, and has a more compact structure, which is conducive to reducing costs and improving product performance.

[0018] 2. In the intelligent circuit breaker shunt tripping structure provided by the utility model, a connecting hole that penetrates and connects the upper mounting cavity and the lower mounting cavity is provided on the middle seat, and the wire is passed through the connection to realize the connection between the main tripper and the shunt control module. The connection distance is short, and the installation and wiring are more convenient, safe, and reliable, with stable performance. In addition, a wiring slot is provided on the side wall of the middle seat, so that the external control line can be inserted into the upper mounting cavity through the wiring slot and connected to the shunt control module, so that the external fire control room and the shunt control module are connected through the control line, which can provide power for the shunt control module and send an electrical signal to the shunt control module to control the tripping action of the main tripper. Therefore, in emergency situations such as fire, the purpose of remotely controlling the circuit breaker tripping and opening can be achieved by cooperating with the shunt tripper and the main tripper, thereby cooperating with the fire to forcibly cut off the power supply to prevent secondary disasters caused by electrical accidents.

[0019] 3. In the shunt tripping structure of the intelligent circuit breaker provided by the utility model, when the circuit breaker is not installed with a shunt control module, it is necessary to cover the wiring slot position. For this purpose, a shearable baffle is provided on the side wall of one side of the upper cover. When the upper cover is installed on the middle seat, the baffle is correspondingly inserted to cover the wiring slot position to avoid the wiring slot position being exposed; when the circuit breaker needs to be equipped with a shunt control module, the cutting part of the baffle can be cut off by hand or by means of diagonal pliers, so that the baffle does not completely cover the wiring slot, but exposes part of the wiring slot for the external wiring of the shunt control module, so that the external control line passes through the wiring slot to connect with the shunt control module, thereby realizing the purpose of remote tripping of the circuit breaker through the shunt tripping module. Such a design can cut off or retain the baffle according to the optional requirements of the shunt control module, which is more convenient to use and is conducive to reducing material inventory, thereby reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the drawings required for use in the specific implementation or the description of the prior art will be briefly introduced below.

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the intelligent circuit breaker of the utility model;

[0022] Figure 2 It is a schematic diagram of the installation structure of the intelligent circuit breaker shunt tripping structure of the utility model;

[0023] Figure 3 It is a cross-sectional structural diagram of the shunt tripping structure of the intelligent circuit breaker of the utility model;

[0024] Figure 4 The utility model is a schematic diagram of the connection structure between the main release and the traction rod.

[0025] Explanation of the reference numerals: 1. upper cover; 2. middle seat; 21. connection hole; 22. wiring slot; 3. base; 4. shunt control module; 5. main release; 51. push rod structure; 6. upper mounting cavity; 7. lower mounting cavity; 8. baffle; 81. cutting part; 9. controller; 10 traction rod. DETAILED DESCRIPTION

[0026] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be noted that the terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Example

[0030] This embodiment provides Figure 1-4 An intelligent circuit breaker shunt tripping structure is shown, comprising:

[0031] The shell structure includes an upper cover 1, a middle seat 2 and a base 3 arranged in sequence from top to bottom, an upper mounting cavity 6 is formed between the upper cover 1 and the middle seat 2, a lower mounting cavity 7 is formed between the middle seat 2 and the base 3, and the upper mounting cavity 6 and the lower mounting cavity 7 are distributed on the same side of the handle and are connected up and down;

[0032] A shunt control module 4 is installed on the middle seat 2 and accommodated in the upper installation cavity 6;

[0033] The main trip device 5 is installed on the base 3 and accommodated in the lower installation cavity 7. The main trip device 5 is inserted into the upper installation cavity 6 through a wire and is electrically connected to the shunt control module 4. When the shunt control module 4 receives an external electrical signal, it is used to drive the main trip device 5 to trigger the circuit breaker to trip and open, so as to achieve the purpose of remotely controlling the circuit breaker to trip and open.

[0034] The above implementation is the core technical solution of this embodiment. The shunt control module 4 is installed in the upper installation cavity 6 between the middle seat 2 and the upper cover 1, and the main trip device 5 is installed in the lower installation cavity 7 between the base 3 and the middle seat 2 and is located below the shunt control module 4, so that the main trip device 5 is conveniently inserted into the upper installation cavity 6 through a wire to be electrically connected to the shunt control module 4. The shunt control module 4 can be used in conjunction with external devices such as a fire control room. When the shunt trip module receives an external electrical signal, a specified voltage is applied to the main trip device 5, thereby driving the main trip device 5 to trigger the circuit breaker to trip and open. In order to realize the function of remote control to open the circuit breaker, the advantage of adopting this technical solution is that, according to the main trip device 5, which is a part of the tripping structure of the circuit breaker itself, it can not only cooperate with the shunt control module 4 to realize the shunt tripping, but also play a role in short circuit, overload and other tripping protection. This design is achieved by reasonably optimizing the layout of the circuit breaker structure, eliminating the shunt trip device, and installing the shunt control module 4 inside the circuit breaker for use with the main trip device 5. The installation occupies a small space, does not increase the volume of the circuit breaker itself, and has a more compact structure, which is conducive to reducing costs and improving product performance.

[0035] In order to facilitate the installation and wiring between the main release 5 and the shunt control module 4, Figure 2-3 As shown, the middle seat 2 is provided with a connection hole 21 that penetrates and connects the upper installation cavity 6 and the lower installation cavity 7, so that the wire passes through the connection hole 21 to connect the main release 5 and the shunt control module 4, the connection distance is short, the installation and wiring are more convenient, safe, reliable, and the performance is stable. In addition, by opening a wiring slot 22 on the side wall of the middle seat 2, the external control line can be inserted into the upper installation cavity 6 through the wiring slot 22 to connect with the shunt control module 4, so that the fire control room and the shunt control module 4 are connected through the control line, which can provide power for the shunt control module 4 and send an electrical signal to the shunt control module 4 to control the tripping action of the main release 5. Therefore, in an emergency such as a fire, the shunt release cooperates with the main release 5 to achieve the purpose of remotely controlling the circuit breaker to trip and open, thereby cooperating with the fire to forcibly cut off the power supply to prevent secondary disasters caused by electrical accidents.

[0036] It is further preferred that the shunt control module 4 includes a shunt control circuit board arranged in the upper mounting cavity 6, the shunt control circuit board is connected to the main trip 5 through a wire, and triggers the main trip 5 to perform a tripping action when receiving an external electrical signal, so as to remotely control the circuit breaker to complete the purpose of tripping. This shunt control circuit board is fixed to the middle seat 2 by a screw structure or a snap structure, and is accommodated in the upper mounting cavity 6, so that the installation is convenient and quick, and the shunt control circuit board is easy to replace and maintain. In summary, it can be seen that the main trip 5 in this embodiment can be used as a shunt trip. At the same time, the entire circuit breaker uses this main trip to realize other fault tripping actions such as shunt tripping, overload tripping and short-circuit tripping, which simplifies the structure and is more convenient to use.

[0037] like Figure 1 As shown, a baffle 8 suitable for being inserted into the wiring slot 22 is provided on one side wall of the upper cover 1, and the baffle 8 includes a cutting portion 81 which can expose a part of the wiring slot 22 after being sheared, and a shearing groove is formed between the cutting portion 81 and the baffle 8. With this structural setting, when the circuit breaker is not installed with the shunt control module 4, the wiring slot 22 needs to be covered. When the upper cover 1 is installed on the middle seat 2, the blocking piece 8 is correspondingly inserted to cover the wiring slot 22 to avoid the wiring slot 22 being exposed, and the installation is aesthetically pleasing and protective. When the circuit breaker needs to be equipped with the shunt control module 4, the cutting portion 81 of the blocking piece 8 can be cut off by hand or with diagonal pliers, so that the blocking piece 8 does not completely cover the wiring slot 22, but exposes part of the wiring slot 22 for the external wiring of the shunt control module 4, so that the external control line passes through the wiring slot 22 to connect with the shunt control module 4, thereby realizing the purpose of remote tripping of the circuit breaker through the shunt trip module. In this design, the blocking piece 8 can be cut off or retained according to the optional requirements of the shunt control module 4, which is more convenient to use and is conducive to reducing material inventory, thereby reducing costs.

[0038] Combine the following Figure 3-4 The specific setting method of the main release is described in detail:

[0039] The main trip device 5 has a push rod structure 51 that drives the traction rod 10 of the circuit breaker to rotate when triggered. The push rod structure 51 includes an L-shaped driving end extending to one side of the traction rod 10 and cooperating with the traction rod 10. The main trip device 5 is well known to those skilled in the art, and also includes a coil assembly, a transmission rod and an energy storage spring arranged on a mounting bracket. The energy storage spring is arranged between the push rod structure 51 and the mounting bracket. The coil assembly consists of a coil, an iron core and a push rod. The transmission rod is rotatably arranged between the push rod and the push rod structure 51. The push rod structure 51 performs energy storage movement under the push of the handle lever, and after completing energy storage, it is hooked with the transmission rod to form a limit fit. At this time, the push rod structure 51 remains in the energy storage state and is ready for triggering the tripping action of the traction rod 10. Therefore, when the coil assembly of the main release 5 is energized and triggered, the push rod is driven to move outward, and the transmission rod is pushed by the push rod to rotate, thereby releasing the limit fit between the transmission rod and the push rod structure, so that the push rod structure 51 quickly triggers the action of the traction rod 10 under the action of the energy storage spring, thereby realizing the tripping and opening of the circuit breaker.

[0040] In this embodiment, a groove structure for installing a controller 9 is provided between the upper cover 1 and the middle base 2. The controller 9 is pluggable and arranged in the groove structure and connected to the main trip device 5. The main trip device can perform the tripping and opening of the circuit breaker under the drive of the controller. It should be understood that the controller 9 is used to realize the information collection, communication transmission and intelligent control functions of the circuit breaker, so that the working information such as the voltage, current and temperature of the circuit breaker can be detected, and the circuit breaker can be analyzed and monitored in real time to see whether the circuit breaker has overload, short circuit, over-voltage and under-voltage faults. Therefore, when the controller 9 detects that the circuit breaker has a short circuit or overload fault, it will drive the main trip device 5 to trip, and then drive the circuit breaker to trip quickly to protect the safe operation of the line and equipment. It can be seen that the main trip device can perform the opening and tripping action under the instruction of the shunt control module, and can also perform the opening and tripping action under the instruction of the controller, and the two do not interfere with each other, and finally achieve the purpose of circuit breaker tripping and opening.

[0041] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. An intelligent circuit breaker shunt tripping structure, characterized in that: include: The housing structure comprises an upper cover (1), a middle seat (2) and a base (3) which are arranged in sequence from top to bottom, an upper mounting cavity (6) is formed between the upper cover (1) and the middle seat (2), a lower mounting cavity (7) is formed between the middle seat (2) and the base (3), and the upper mounting cavity (6) and the lower mounting cavity (7) are distributed on the same side of the handle and are connected up and down; A shunt control module (4) is mounted on the middle seat (2) and accommodated in the upper mounting cavity (6); A main tripper (5) is mounted on the base (3) and accommodated in the lower mounting cavity (7); the main tripper (5) is electrically connected to the shunt control module (4) by passing a wire into the upper mounting cavity (6); the shunt control module (4) is used to drive the main tripper (5) to trigger the circuit breaker to trip and open.

2. According to claim 1, the intelligent circuit breaker shunt tripping structure is characterized in that: The middle seat (2) is provided with a connecting hole (21) penetrating and connecting the upper mounting cavity (6) and the lower mounting cavity (7), so that a wire passes through the connecting hole (21) to connect the main release (5) and the shunt control module (4).

3. According to claim 2, the intelligent circuit breaker shunt tripping structure is characterized in that: A wiring slot (22) is provided on the side wall of the middle seat (2) so that an external control line can pass through the wiring slot (22) into the upper mounting cavity (6) and be connected to the shunt control module (4).

4. According to claim 3, the intelligent circuit breaker shunt tripping structure is characterized in that: The shunt control module (4) comprises a shunt control circuit board arranged in the upper mounting cavity (6).

5. According to claim 4, the intelligent circuit breaker shunt tripping structure is characterized in that: The shunt control circuit board is fixed on the middle seat (2) by means of a screw structure or a snap-fit ​​structure, and is accommodated in the upper mounting cavity (6).

6. The intelligent circuit breaker shunt tripping structure according to any one of claims 1 to 5, characterized in that: A baffle (8) suitable for being inserted into the wiring slot (22) is provided on one side wall of the upper cover (1); the baffle (8) comprises a cutting portion (81) which can expose a portion of the wiring slot (22) after being sheared; a shearing groove is formed between the cutting portion (81) and the baffle (8).

7. The intelligent circuit breaker shunt tripping structure according to claim 6, characterized in that: The main release (5) has a push rod structure (51) that drives the traction rod (10) of the circuit breaker to rotate when triggered, and the push rod structure (51) includes an L-shaped driving end that extends to one side of the traction rod (10) and cooperates with the traction rod (10).

8. The intelligent circuit breaker shunt tripping structure according to claim 6, characterized in that: A groove structure for installing a controller (9) is provided between the upper cover (1) and the middle seat (2); the controller (9) is pluggably arranged in the groove structure and connected to a main trip device (5); and the main trip device can perform tripping and opening of the circuit breaker under the drive of the controller.

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