Intelligent molded case circuit breaker

Abstract

The utility model discloses an intelligent molded case circuit breaker, which comprises a base, a middle cover, a mutual inductor module, a circuit module I, a circuit module II, a functional module and a main circuit busbar, the base is provided with a separation cavity and a mutual inductor mounting cavity, and the mutual inductor module is mounted in the mutual inductor mounting cavity; the circuit module I is fixed at the upper end of the mutual inductor module, and the main bus bar penetrates through the mutual inductor module; a circuit module mounting cavity is formed in the bottom surface of the base, the second circuit module is fixed in the circuit module mounting cavity, a channel is formed in the base, the channel is provided with an insulated and closed side peripheral wall, and a conductor structure is arranged in the channel; the middle cover covers the upper portion of the base and is provided with a function module installation cavity, and the function module is installed in the function module installation cavity and connected with the first circuit module. The intelligent molded case circuit breaker is reasonable in structural design, convenient to assemble, stable in use performance and good in practicability, and modular design is adopted.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of circuit breaker, specifically relates to an intelligent moulded case circuit breaker. BACKGROUND

[0002] The intelligent moulded case circuit breaker is a moulded case circuit breaker combined with intelligent control technology. It is suitable for household and similar places, especially in occasions requiring accurate control and protection of power equipment. Its application range is wide, including industrial and urban low-voltage factories, motor protection, generator protection, capacitor protection and terminal user fields. In the existing moulded case circuit breaker, the control unit and the circuit unit are relatively dispersed and messy, effective modularization is not formed, assembly operation is tedious, and the internal space of the shell is not fully utilized. SUMMARY

[0003] To this end, the utility model discloses a modularized intelligent moulded case circuit breaker, which has the advantages of convenient assembly and easy maintenance.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] The utility model provides a kind of intelligent moulded case circuit breaker, including base, middle cover, mutual inductor module, circuit module one, circuit module two, function module and main road busbar;The base has the cavity formed by being separated by phase spacing plate and the mutual inductor installation cavity communicated with cavity, and the mutual inductor module is installed in mutual inductor installation cavity;Circuit module one is fixed on the upper end of the mutual inductor module, and the main road busbar penetrates the mutual inductor module;Circuit module installation cavity is equipped on the bottom surface of the base, and the circuit module installation cavity is closed by bottom plate, and circuit module two is fixed in circuit module installation cavity, and the bottom of the base is provided with the passage along the up-down direction between circuit module one and circuit module two, and the passage has insulating and closed side wall, and the passage is equipped with the conductor structure connecting circuit module one and circuit module two;The middle cover is covered in the upper portion of base and is equipped with the function module installation cavity opposite the mutual inductor installation cavity, and the function module is installed in function module installation cavity and is connected with circuit module one.

[0006] In further technical scheme, the mutual inductor module has installation frame, and circuit module one includes mounting seat and first circuit board fixed on mounting seat, and mounting seat is fixed on the upper end of installation frame.

[0007] In a further technical solution, the installation frame is provided with a blocking block protruding upward and connected with the mounting seat, the blocking block is connected with the position corresponding to the phase spacing plate, the installation frame is divided into a plurality of accommodating cavities along the width direction of the base through the blocking block, the first clamping groove and the second clamping groove are arranged in the accommodating cavities, the current transformer is arranged in the first clamping groove, and the metering transformer is arranged in the second clamping groove.

[0008] In a further technical solution, the channel is integrally arranged on the installation frame, or the channel is integrally arranged on the phase spacing plate, or the channel is formed by the blocking block and the corresponding part on the phase spacing plate.

[0009] In a further technical solution, the mounting seat is provided with a limiting flange protruding outward on the side surface, the limiting flange is lapped on the upper edge of the base on the lower side, and the lower edge of the middle cover is abutted on the upper side of the limiting flange; the mounting seat comprises a base and a pressing plate arranged on the upper part of the base, a positioning space is formed between the pressing plate and the base, the first circuit board is arranged in the positioning space, and a through hole is arranged on the base at a position corresponding to the channel.

[0010] In a further technical solution, the conductor structure comprises a pin terminal, the upper end of the pin terminal is connected with the circuit module one, and the lower end of the pin terminal is connected with the circuit module two.

[0011] In a further technical solution, the main busbar is fixed on the installation frame.

[0012] In a further technical solution, the functional module is plug-in arranged in the functional module mounting cavity and is plugged with the circuit module one through the plug-in assembly, the plug-in assembly comprises plug-in part one and plug-in part two matched with each other, and the plug-in direction of the plug-in part one and the plug-in part two is the direction that the functional module is arranged in the functional module mounting cavity.

[0013] In a further technical solution, a notch is arranged on the upper edge of the functional module mounting cavity on the side surface of the middle cover, an outward protruding blocking rim is arranged on the upper edge of the functional module, the lower part of the blocking rim is attached to the upper edge of the middle cover, an insertion block is arranged on the lower side of the blocking rim, the insertion block is inserted into the notch and the outer side surface of the insertion block is recessed in the side surface of the middle cover, a wiring avoiding opening is arranged on the end surface of the functional module mounting cavity, and a wiring part is arranged on the side end of the functional module corresponding to the wiring avoiding opening.

[0014] In further technical solutions, the mounting frame upper end is fixed with a terminal block, the terminal block is provided with a first socket and a second socket corresponding to each mutual inductor module, the lead end of the current transformer is provided with a first plug matched with the first socket, and the lead end of the metering mutual inductor is provided with a second plug matched with the second socket; the terminal block is provided with an upward plug-in part, the circuit module one is provided with a counter plug electrically connected with the plug-in part.

[0015] The intelligent molded case circuit breaker has the following advantages: the modular design is adopted in the intelligent molded case circuit breaker, the circuit module one, the circuit module two, the mutual inductor module and the function module are designed in a modular manner, the positions and the connection modes are reasonably designed, the modules in the circuit breaker are arranged in order, the overall assembly is convenient, the maintenance is easy, and the use performance of the intelligent circuit breaker is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings used in the description of the embodiments will be briefly introduced. Similar elements or parts in the drawings are generally indicated by similar reference numerals. The elements or parts in the drawings are not necessarily drawn according to the actual proportions.

[0017] Figure 1 Figure 1 is a structural diagram of the intelligent molded case circuit breaker in the present application;

[0018] Figure 2 Figure 2 is a structural diagram of the intelligent molded case circuit breaker (with the function module removed) in the present application;

[0019] Figure 3 Figure 3 is a structural diagram of the base, the mutual inductor module and the circuit module one in the present application in an assembled state;

[0020] Figure 4 Figure 4 is a structural diagram of the base and the mutual inductor module in the present application in an assembled state;

[0021] Figure 5 Figure 5 is a structural diagram of the base in the present application;

[0022] Figure 6 Figure 6 is a structural diagram of the mutual inductor module and the circuit module one in the present application in an assembled state;

[0023] Figure 7 Figure 7 is a structural diagram of the mutual inductor module in the present application;

[0024] Figure 8 Figure 8 is an exploded view of the circuit module one in the present application;

[0025] Figure 9 Figure 9 is an exploded view of the mutual inductor module in the present application;

[0026] Figure 10 The utility model discloses intelligent circuit breaker bottom ( remove circuit module two, bottom plate) structure diagram.

[0027] The figure shows the signification of the drawing is: 1 - baseplate;11 - phase spacing board;12 - compartment;13 - mutual inductor installation cavity;14 - circuit module installation cavity;15 - passageway;2 - middle cover;21 - function module installation cavity;22 - slot;23 - wiring avoids the mouth;3 - mutual inductor module;31 - installation frame;311 - separate block;312 - accommodation cavity;313 - first clamping groove;314 - second clamping groove;32 - current transformer;33 - metering mutual inductor;34 - wiring board;341 - first socket;342 - second socket;343 - plug connector;4 - circuit module one;41 - mounting seat;411 - limit flange;412 - base;413 - pressboard;414 - through -hole;42 - first circuit board;5 - circuit module two;6 - function module;61 - fender;62 - plug block;63 - wiring part;7 - main circuit busbar;8 - bottom plate. DETAILED DESCRIPTION

[0028] The embodiments of the technical scheme of the utility model are described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the utility model, therefore only as an example, can not be used to limit the protection scope of the utility model.

[0029] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be the usual meaning understood by the technical personnel in the field of the utility model.

[0030] The structure of the intelligent plastic shell circuit breaker of the utility model embodiment is as follows Figures 1 to 10As shown, it includes a base 1, a middle cover 2, a current transformer module 3, a circuit module one 4, a circuit module two 5, a functional module 6, and a main busbar 7; the functional module 6 can be a carrier module, a control module, or a communication module, etc. The base 1 has a cavity 12 formed by phase spacers 11 and a transformer mounting cavity 13 communicating with the cavity 12. The cavity 12 is used to install each phase conductive system separately, and the phase spacers 11 can form effective isolation between adjacent phase conductive systems. The transformer module 3 is installed in the transformer mounting cavity 13. The circuit module 4 is fixed to the upper end of the transformer module 3, and the main busbar 7 passes through the transformer module 3 to collect and convert the main current. The bottom surface of the base 1 is provided with a circuit module mounting cavity 14, which is closed by a base plate 8. The circuit module 5 is fixed in the circuit module mounting cavity 14. During assembly, the circuit module 4 is first installed from the bottom of the base 1, and then the base plate 8 is fixed to the bottom of the base 1. By reasonably designing the bottom structure of the base 1, an independent installation space is provided for the circuit module 5. The circuit module 4 is installed in the base 1. A channel 15, arranged vertically, connects circuit module 4 and circuit module 5. The channel 15 has insulated and enclosed side walls. A conductor structure connecting circuit module 4 and circuit module 5 is located within the channel 15. This conductor structure, passing through the channel 15, provides excellent insulation and protection. The middle cover 2 covers the upper part of the base 1 and has a functional module mounting cavity 21 opposite to the current transformer mounting cavity 13. The functional module 6 is installed in the functional module mounting cavity 21 and connected to circuit module 4. This invention's intelligent molded case circuit breaker utilizes a modular design through structural optimization, incorporating circuit module 4, circuit module 5, current transformer module 3, and functional module 6. The modular design and rational arrangement of their positions and connections ensure an orderly arrangement of internal modules, facilitating maintenance and overall assembly, thus effectively improving the performance of the intelligent circuit breaker. (See also...) Figure 6 As shown, the current transformer module 3 has a mounting frame 31, which not only provides a foundation for the installation of the current transformer, but also connects to the circuit module 4 through its structural design. The circuit module 4 includes a mounting base 41 and a first circuit board 42 fixed to the mounting base 41. The mounting base 41 is fixed to the upper end of the mounting frame 31 by means of screws or snap-fit, thereby realizing the fixed connection between the current transformer module 3 and the circuit module 4.

[0031] Combination Figure 6 , Figure 7 and Figure 9As shown, in order to improve the degree of modularization and ease of installation, the mounting frame 31 is provided with a blocking block 311 upwardly protruding and connected with the mounting seat 41. The blocking block 311 is connected with the phase spacing plate 11 in position correspondence. The mounting frame 31 is divided by the blocking block 311 to form a plurality of accommodation cavities 312 spaced along the width direction of the base 1. The blocking block 311 is not only connected with the mounting seat 41 to provide a mounting base for the circuit module 4, but also plays a role of separation and support to provide mounting space for the current transformer 32 and the metering transformer 33. They correspond to the position of the phase spacing plate 11 and jointly constitute the spatial layout inside the device. Each accommodation cavity 312 is provided with a first clamping groove 313 and a second clamping groove 314. The first clamping groove 313 and the second clamping groove 314 are respectively used for mounting the current transformer 32 and the metering transformer 33. This design makes the installation of the transformers simple and fast. Only the transformers need to be placed in the corresponding clamping grooves to complete the fixation. The main busbar 7 passes through the current transformer 32 and the metering transformer 33. The current transformer 32 is used for measuring the current size in the main circuit, and the metering transformer 33 is used for converting the current signal into an electrical signal that can be processed by the metering system. Through the cooperation of the two transformers, accurate measurement and metering of the current of each phase main circuit can be realized to provide data support for the operation and management of the power system.

[0032] In some embodiments, the channel 15 can be provided in two or more to adapt to different line settings, such as passing the strong and weak lines from different channels 15 respectively; specifically, the channel 15 is integrally provided on the mounting frame 31; or, the channel 15 is integrally provided on the phase spacing plate 11; or, the blocking block 311 and the corresponding part of the phase spacing plate 11 form the channel 15. The above three structural forms can form the channel 15, and appropriate channel structure can be selected according to actual needs.

[0033] In combination with Figure 6 and Figure 8As shown, the mounting seat 41 is provided with a limiting flange 411 outwardly protruding from the side, the lower side of the limiting flange 411 is overlapped on the upper edge of the base 1, and the lower edge of the middle cover 2 is pressed on the upper side of the limiting flange 411, so that the limiting flange 411 is clamped and fixed by the base 1 and the middle cover 2, thereby enhancing the stability of the mounting seat 41. The mounting seat 41 comprises a base 412 and a pressing plate 413 arranged on the upper part of the base 412, and a positioning space is formed between the pressing plate 413 and the base 412, the first circuit board 42 is arranged in the positioning space, and a through hole 414 is arranged on the base 412 corresponding to the channel 15, which is used to arrange the conductor structure. During assembly, the first circuit board 42 is arranged on the base 412, and then the pressing plate 413 is fixed with the base 412, and the first circuit board 42 is pressed on the base 412 by the pressing plate 413, so that the assembly is convenient. As an example, the pressing plate 413 is fixedly connected with the base 412 by clamping.

[0034] In some embodiments, the conductor structure preferably adopts a row pin terminal, the upper end of the row pin terminal is connected with the circuit module one 4, and the lower end of the row pin terminal is connected with the circuit module two 5; the row pin terminal is used as a medium for connecting the circuit module one 4 and the circuit module two 5; the row pin terminal comprises a plurality of pins arranged side by side, which can be connected with a plurality of circuit points at the same time, thereby forming a high-density, multi-channel electrical connection path in the connection between the circuit module one 4 and the circuit module two 5, which can better adapt to the use requirements.

[0035] In some embodiments, the main busbar 7 is fixed (such as fixed by using screws) on the mounting frame 31, so that during assembly, the main busbar 7 can be fixed on the transformer module 3 first, and then the whole is assembled into the base 1, so that the assembly operation is convenient.

[0036] In combination Figure 1 And Figure 2 As shown, in order to facilitate the installation and disassembly of the functional module 6, the functional module 6 is plug-in arranged in the functional module mounting cavity 21, and is plug-in connected with the circuit module one 4 through a plug-in assembly, the plug-in assembly comprises plug-in pieces one and two which are matched with each other, and the plug-in direction of the plug-in pieces one and two is the direction of the functional module 6 being inserted into the functional module mounting cavity 21; specifically, one of the plug-in pieces one and two is arranged on the circuit module one 4, and the other of the plug-in pieces one and two is arranged on the functional module 6, when the functional module 6 is installed, it is inserted from the upper port of the functional module mounting cavity 21, and during the insertion process, the plug-in pieces one and two are plug-in connected, so that the electrical connection is completed at the same time when the functional module 6 is installed, and the power-off is completed when the functional module 6 is pulled out, thereby improving the convenience of use for users.

[0037] Further in combinationFigure 1 And Figure 2 As shown in the figure, in order to optimize the dismounting process of the function module 6, the middle cover 2 side is provided with a notch 22 at the upper edge of the function module installation cavity 21, the upper edge of the function module 6 is provided with an outwardly protruding stop 61, the lower part of the stop 61 is attached to the upper edge of the middle cover 2, and the lower side of the stop 61 is provided with an insertion block 62, the insertion block 62 is inserted into the notch 22 and the outer side of the insertion block 62 is recessed in the side of the middle cover 2, so that when the function module 6 is pulled out of the function module installation cavity 21, force can be applied to the controller 6 from the notch 22, the force point is more easily found, and the operation is facilitated; moreover, the end face of the function module installation cavity 21 is provided with a wiring avoiding port 23, and the side end of the function module 6 is provided with a wiring part 63 corresponding to the wiring avoiding port 23, so that the external lead wire can be connected through the wiring avoiding port 23 of the side end and the wiring part 63, and the wiring is convenient and orderly.

[0038] In some embodiments, in combination Figure 7 And Figure 9 As shown in the figure, in order to optimize the wiring structure, the mounting frame 31 is fixed with a wiring board 34 at the upper end, the wiring board 34 is provided with a first socket 341 and a second socket 342 corresponding to each mutual inductor module 3, the lead end of the current transformer 32 is provided with a first plug matched with the first socket 341, and the lead end of the metering transformer 33 is provided with a second plug matched with the second socket 342; the wiring board 34 is provided with an upward plug-in part 343, and the circuit module one 4 is provided with a counter plug electrically connected with the plug-in part 343; in this way, the user does not need to perform complex wiring inside the circuit breaker, and by using the wiring board 34 at the upper end of the mounting frame 31, the first socket 341, the second socket 342 and the plug-in part thereon are designed to jointly constitute an efficient, reliable and easy-to-maintain wiring system, and the wiring process is optimized.

[0039] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled persons in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to exhaust all the embodiments. The changes or variations extended from the essential spirit of the utility model and obvious to those skilled in the art still belong to the protection scope of the utility model.

Claims

1. An intelligent molded case circuit breaker, comprising a base (1), a middle cover (2), a transformer module (3), a circuit module I (4), a circuit module II (5), a function module (6) and a main busbar (7); the base (1) has a partition cavity (12) formed by partition plates (11) and a transformer installation cavity (13) communicating with the partition cavity (12), and the transformer module (3) is installed in the transformer installation cavity (13); characterized in that, The circuit module one (4) is fixed on the upper end of the mutual inductor module (3), and the main busbar (7) penetrates the mutual inductor module (3); the bottom surface of the base (1) is provided with a circuit module mounting cavity (14), the circuit module mounting cavity (14) is closed by a bottom plate (8), the circuit module two (5) is fixed in the circuit module mounting cavity (14), and a channel (15) arranged in the up-down direction is provided in the base (1) and penetrates between the circuit module one (4) and the circuit module two (5), the channel (15) has an insulating and closed side wall, and a conductor structure for connecting the circuit module one (4) and the circuit module two (5) is arranged in the channel (15); the middle cover (2) is arranged on the upper part of the base (1) and is provided with a functional module mounting cavity (21) opposite to the mutual inductor mounting cavity (13), and the functional module (6) is arranged in the functional module mounting cavity (21) and connected with the circuit module one (4).

2. The intelligent molded case circuit breaker of claim 1, wherein, The mutual inductor module (3) has a mounting frame (31), the circuit module one (4) includes a mounting seat (41) and a first circuit board (42) fixed on the mounting seat (41), and the mounting seat (41) is fixed on the upper end of the mounting frame (31).

3. The intelligent molded case circuit breaker of claim 2, wherein, The mounting frame (31) is provided with a blocking block (311) protruding upward and connected with the mounting seat (41), the blocking block (311) is connected with the phase spacing plate (11) in a position corresponding to the phase spacing plate (11), and the mounting frame (31) is divided by the blocking block (311) to form a plurality of accommodation cavities (312) spaced in the width direction of the base (1), the accommodation cavities (312) are provided with first clamping grooves (313) and second clamping grooves (314), the current transformer (32) is arranged in the first clamping grooves (313), and the metering transformer (33) is arranged in the second clamping grooves (314), and the main busbar (7) penetrates the current transformer (32) and the metering transformer (33).

4. The intelligent molded case circuit breaker of claim 3, wherein, The channel (15) is integrally arranged on the mounting frame (31); or the channel (15) is integrally arranged on the phase spacing plate (11); or the blocking block (311) and the corresponding part of the phase spacing plate (11) form the channel (15).

5. The intelligent molded case circuit breaker of claim 2, wherein, The mounting seat (41) is provided with a limiting flange (411) protruding outward on the side surface, the limiting flange (411) is lapped on the upper edge of the base (1) on the lower side, and the lower edge of the middle cover (2) is abutted on the upper side of the limiting flange (411). The mounting seat (41) includes a base (412) and a pressing plate (413) arranged on the upper part of the base (412), a positioning space is formed between the pressing plate (413) and the base (412), the first circuit board (42) is arranged in the positioning space, and a through hole (414) is arranged on the base (412) at a position corresponding to the channel (15).

6. The intelligent molded case circuit breaker of claim 1, wherein, The conductor structure includes a row pin terminal, the upper end of the row pin terminal is connected with the circuit module one (4), and the lower end of the row pin terminal is connected with the circuit module two (5).

7. The intelligent molded case circuit breaker of claim 2, wherein, The main busbar (7) is fixed on the mounting frame (31).

8. The intelligent molded case circuit breaker of claim 1, wherein, The functional module (6) is pluggable in the functional module installation cavity (21) and is plugged with the circuit module (4) through a plug assembly, the plug assembly includes a plug-in part one and a plug-in part two, and the plug-in direction of the plug-in part one and the plug-in part two is the direction of the functional module (6) being installed in the functional module installation cavity (21).

9. The intelligent molded case circuit breaker of claim 8, wherein, The middle cover (2) is provided with a notch (22) on the side surface of the upper edge of the functional module installation cavity (21), the functional module (6) is provided with an outward protruding retaining rim (61) on the upper edge, the lower part of the retaining rim (61) is attached to the upper edge of the middle cover (2), and the lower side of the retaining rim (61) is provided with a plug block (62), the plug block (62) is inserted into the notch (22), and the outer side surface of the plug block (62) is recessed in the side surface of the middle cover (2); the end surface of the functional module installation cavity (21) is provided with a wiring avoiding port (23), and the side end of the functional module (6) is provided with a wiring part (63) corresponding to the wiring avoiding port (23).

10. The intelligent molded case circuit breaker of claim 3, wherein, The wiring board (34) is fixed on the upper end of the installation frame (31), the wiring board (34) is provided with a first socket (341) and a second socket (342) corresponding to each mutual inductor module (3), the lead end of the current mutual inductor (32) is provided with a first plug matched with the first socket (341), and the lead end of the metering mutual inductor (33) is provided with a second plug matched with the second socket (342); the wiring board (34) is provided with an upward plug-in part (343), and the circuit module (4) is provided with a counter plug electrically connected with the plug-in part (343).

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