CN219936963U - Plastic case circuit breaker and power distribution system with same - Google Patents

Abstract

The utility model relates to a molded case circuit breaker and a power distribution system with the molded case circuit breaker. This moulded case circuit breaker includes the circuit breaker base and with this circuit breaker base pluggable complex circuit breaker body, this circuit breaker body includes first terminal and second terminal, and the circuit breaker base includes: the base body comprises a first wiring end part and a second wiring end part which are oppositely arranged to be respectively connected with the first wiring terminal and the second wiring terminal in a pluggable manner, a first mounting groove is formed in one side of the first wiring end part and/or the second wiring end part, which faces the breaker body, and the first mounting groove is matched with the side surface, adjacent to the breaker base, of the breaker body to form a first mounting cavity when the base body is connected with the breaker body; and the acquisition module is accommodated in the first mounting cavity and is provided with a positioning hole relative to the corresponding binding post so as to be electrically connected with the corresponding binding post while the corresponding binding post passes through the positioning hole to be connected with the corresponding binding post end.

Description

Plastic case circuit breaker and power distribution system with same

Technical Field

The utility model relates to the technical field of power equipment, in particular to a molded case circuit breaker and a power distribution system with the molded case circuit breaker.

Background

With the increasing demand for electricity, switching devices, such as circuit breakers, and in particular, molded case circuit breakers, are widely used in power distribution systems, such as switchgear, to control and protect circuits through their closing and opening actions, due to their compact structure and high reliability. Wherein, the molded case circuit breaker can generally include a circuit breaker base and a circuit breaker body that is pluggable fitted with the circuit breaker base, so that when the molded case circuit breaker fails or breaks down, an operator only needs to detach the broken circuit breaker body from the circuit breaker base and reinstall a new circuit breaker body, which greatly reduces the downtime of the electrical equipment. However, the molded case circuit breaker in the prior art generally has either no intelligent output function, or an intelligent output component is arranged outside the molded case circuit breaker and connected by adopting a connecting piece such as a copper bar, the former has the defect of single function, and the latter can cause the problems of large occupied space, complex wiring, high cost and the like.

Therefore, there is a need in the art for a circuit breaker base that is relatively rich in functionality, small in footprint, simple to operate, and low in cost.

Disclosure of Invention

The present utility model aims to provide a molded case circuit breaker capable of solving at least some of the problems described above.

The utility model also aims to provide a power distribution system applying the improved molded case circuit breaker.

According to one aspect of the present utility model, there is provided a molded case circuit breaker including a circuit breaker base and a circuit breaker body removably mated with the circuit breaker base, the circuit breaker body including a first terminal and a second terminal, the circuit breaker base comprising: the base body comprises a first wiring end part and a second wiring end part which are oppositely arranged to be connected with the first wiring terminal and the second wiring terminal in a pluggable manner, wherein a first mounting groove is formed in one side of the first wiring end part and/or the second wiring end part, which faces the circuit breaker body, and the first mounting groove is matched with the side surface, adjacent to the circuit breaker base, of the circuit breaker body to form a first mounting cavity when the base body is connected with the circuit breaker body; and the acquisition module is accommodated in the first mounting cavity and is provided with a positioning hole relative to the corresponding binding post so as to be electrically connected with the corresponding binding post while the corresponding binding post passes through the positioning hole to be connected with the corresponding binding post end part.

Compared with the prior art, the molded case circuit breaker can collect the operation information of the first wiring end part and/or the second wiring end part of the circuit breaker base by arranging the collecting module, so that the external control device can control the molded case circuit breaker according to the collected information, and the safety and reliability are improved. In addition, the molded case circuit breaker has the advantages of small occupied space and compact structure by arranging the acquisition module between the circuit breaker base and the circuit breaker body. Finally, the collecting module can generate induced current with the corresponding binding post through the positioning hole connected with the corresponding binding post end part, so as to be electrically connected with the corresponding binding post, thereby greatly reducing the required copper bar usage amount and simplifying secondary wiring operation.

Preferably, the base body further comprises a main body part located between the first wiring end part and the second wiring end part, a second mounting groove communicated with the first mounting groove is formed in one side of the main body part facing the breaker body, and the second mounting groove is matched with the side surface, adjacent to the breaker base, of the breaker body when the base body is connected with the breaker body to form a second mounting cavity communicated with the first mounting cavity;

the breaker body further comprises a communication module which is accommodated in the second installation cavity and is electrically connected with the acquisition module.

Preferably, a side of the first terminal portion facing away from the breaker body is provided with a first conducting member extending and protruding away from the first terminal portion, a side of the second terminal portion facing away from the breaker body is provided with a second conducting member extending and protruding away from the second terminal portion, and the first conducting member and the second conducting member are respectively used for being connected to an external power supply and an external load.

Preferably, the end portion of the communication module adjacent to the acquisition module is provided with a connection notch at a side facing away from the breaker body, and the end portion of the communication module adjacent to the acquisition module is formed with a connection protrusion overlapping to the connection notch at a side facing away from the breaker body.

Preferably, the end of the communication module not arranged opposite to the acquisition module extends beyond the circuit breaker base, and the end of the communication module extending beyond the circuit breaker base is provided with an interface.

Preferably, the first terminal portion and the second terminal portion each include a housing having a cavity therein, an end cap closing the housing to form an accommodating space in cooperation with the housing, and a terminal socket located in the accommodating space, and a hollow positioning column is provided in a region of the end cap opposite to the terminal socket.

Preferably, the positioning hole is sleeved outside the positioning post, so that the corresponding binding post penetrates through the positioning hole to be connected with the corresponding wiring socket.

Preferably, the first terminal portion and the second terminal portion are each provided with three terminal sockets, and the number of the collection modules is set to three so as to correspond to each of the terminal sockets of the terminal portions.

Preferably, the acquisition module is integrated with a current transformer, a temperature sensor and a voltage sampling element.

According to another aspect of the present utility model, there is also provided a power distribution system in which the aforementioned molded case circuit breaker is provided.

Additional features and advantages of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following, or may be learned from the practice of the utility model.

Drawings

Embodiments of the present utility model are described in detail below with reference to the attached drawing figures, wherein:

fig. 1 is a first perspective view of a molded case circuit breaker according to the present utility model;

fig. 2 is a first exploded view of a molded case circuit breaker according to the present utility model;

fig. 3 is a second perspective view of the molded case circuit breaker according to the present utility model;

fig. 4 is a second exploded view of the molded case circuit breaker according to the present utility model;

fig. 5 is a perspective view of a molded case circuit breaker mounted to a mounting plate according to the present utility model;

fig. 6 is a side view of a molded case circuit breaker mounted to a mounting plate according to the plate utility model;

fig. 7 is a side view of a power distribution system according to the present utility model.

Reference numerals illustrate:

10-plastic case circuit breaker; 11-a circuit breaker base; 111-a base body; 112-a body portion; 113-a first terminal portion; 113 a-a housing; 113 b-end caps; 113 c-positioning posts; 113 d-a first pass-through; 114-a second terminal portion; 114 a-a second pass-through; 115-a first mounting groove; 116-a second mounting groove; 117-acquisition module; 1171-connection tabs; 1172-locating holes; 118-a communication module; 1181-a connection gap; 1182-interface; 12-a breaker body; 121-a first binding post; 122-a second binding post; 123-a first handle; 124-a second handle; 20-mounting plates; 30-busbar; 40-electrical connectors; 100-power distribution system.

Detailed Description

Referring now to the drawings, the disclosed molded case circuit breaker and an exemplary scheme having the power distribution system will be described in detail. Although the drawings are provided to present some embodiments of the utility model, the drawings are not necessarily to scale and certain features may be exaggerated, removed, or partially sectioned to better illustrate and explain the present disclosure. The position of part of components in the drawings can be adjusted according to actual requirements on the premise of not affecting the technical effect. The appearances of the phrase "in the drawings" or similar language in the specification do not necessarily refer to all figures or examples.

Certain directional terms used hereinafter to describe the drawings, such as "inner", "outer", "above", "below" and other directional terms, will be understood to have their normal meaning and refer to those directions as they would be when viewing the drawings. Unless otherwise indicated, directional terms described herein are generally in accordance with conventional directions as understood by those skilled in the art.

The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.

The terms "joined," "connected," and the like as used herein, include both two components being indirectly joined together by means of an intermediate layer such as an adhesive, a solder, or the like, or an intermediate member such as a connecting member, a transition member, or the like, and also two components being directly joined together without any intermediate layer such as an adhesive, a solder, or the like, or an intermediate member such as a connecting member, a transition member, or the like.

Fig. 1 to 7 show, by way of example, a molded case circuit breaker 10 of the present utility model and a power distribution system 100 having the molded case circuit breaker 10, in which a circuit breaker base 11 of the molded case circuit breaker 10 is pluggable to a circuit breaker body 12 so that intelligent output can be provided while occupying a small space and having a compact mechanism. As shown, the molded case circuit breaker 10 may include a circuit breaker base 11 and a circuit breaker body 12 coupled to an upper side of the circuit breaker base 11. Thereby, the breaker body 12 can be pulled up from the base body 111 from the state shown in fig. 1 for maintenance.

Specifically, the circuit breaker base 11 may include a base body 111, a collection module 117, and a communication module 118. The base body 111 may have a substantially rectangular parallelepiped configuration, and may include a main body 112 divided along a length direction of the rectangular parallelepiped, and first and second terminal portions 113 and 114 located at opposite sides of the main body 112 along the length direction, it should be noted that the division of the base body 111 herein is only for convenience of description, and the main body 112 and the first and second terminal portions 113 and 114 may be configured as a whole at the time of actual manufacturing as needed. The upper side of the first and/or second terminal portions 113 and 114 may be provided with a first mounting groove 115, the upper side of the main body portion 112 may be provided with a second mounting groove 116, and the first mounting groove 115 may communicate with the second mounting groove 116 so as to mount the acquisition module 117 and the communication module 118 connected to each other.

Similarly, the breaker body 12 may also have a substantially rectangular parallelepiped configuration, which may include first and second handles 123 and 124 along both sides of the length of the rectangular parallelepiped, and the both sides may be provided with first and second terminals 121 and 122, such as copper connection posts, extending downward to mechanically and electrically contact the first and second terminal portions 113 and 114, respectively. As shown in fig. 1, the circuit breaker body 12 is plugged into the circuit breaker base 11, and the first mounting groove 115 and the second mounting groove 116 are covered by the circuit breaker body 12 and cooperate with the bottom surface of the circuit breaker body 12 to form a first mounting cavity and a second mounting cavity. Thus, the acquisition module 117 may be housed within a first mounting cavity, and the communication module 118 may be housed within a second mounting cavity in communication with the first mounting cavity so as to be electrically connected with the acquisition module 117. Arranging the acquisition module 117 and the communication module 118 in this manner can greatly reduce the occupied space of the circuit breaker base 11 and the molded case circuit breaker 10 and can make the structure compact.

In addition, the acquisition module 117 may be electrically connected to the opposite terminal, and may have a current transformer, a temperature sensor, and a voltage sampling element integrated thereon to acquire current conditions, voltage conditions, temperature conditions, and switching states of the corresponding terminal, etc., and transmit the acquired information to an external device such as a controller or a display, etc., through the communication module 118, thereby providing protection and control of the circuit breaker base 11 and thus the molded case circuit breaker 10. In this way, the applicable range of the circuit breaker base 11 of the present utility model and the molded case circuit breaker 10 to which the present utility model is applied is expanded.

Preferably, as shown in fig. 1 to 4, the first terminal 113 may be a wire inlet end, the first terminal 121 may be a wire inlet post, the second terminal 114 may be a wire outlet end, the second terminal 122 may be a wire outlet post, and the collecting module 117 may be disposed in a mounting slot on the wire inlet end and electrically connected with the wire inlet post, so as to monitor the current, voltage, temperature, etc. of the feeder loop, and send them to an external device through the communication module 118, and then calculate the big data of the system, so as to give an alarm when the temperature is too high in case of trend of abnormal conditions, which is safe and reliable. Further, another collection module (not shown) may be disposed at the outlet end, and the collection module 117 at the outlet end and the collection module 117 at the inlet end may be separately disposed at both sides of the communication module 118 and may also be connected to the communication module 118, so as to monitor the current, voltage, temperature, etc. at the outlet post side and send them to an external device, which may further improve the accuracy of monitoring and may ensure the normal operation of the circuit breaker base 11 of the present utility model when one of the collection modules fails to be outlet.

Alternatively, the end of the communication module 118 adjacent to the collection module 117 may be provided with a connection notch 1181 at the lower side, and accordingly, the end of the collection module 117 adjacent to the communication module 118 may be provided with a connection protrusion 1171 at the lower side, and overlap to the connection notch 1181 through the connection protrusion 1171, thereby electrically connecting the communication module 118 and the collection module 117 to each other. Illustratively, the connection tabs 1171 may be site welded to the copper bars of the connection notch 1181.

Alternatively, the end of the communication module 118 not disposed opposite to the acquisition module 117 may extend beyond the circuit breaker base 11 and the circuit breaker body 12 so as to be exposed from between the circuit breaker base 11 and the circuit breaker body 12, and the end of the extension thereof exposing the circuit breaker base 11 and the circuit breaker body 12 may be provided with an interface 1182, preferably a standard interface 1182 disposed at an upper side of the end, for convenience of operation and wiring.

Alternatively, the first and second terminal portions 113 and 114 may be substantially identical in configuration, and thus the first terminal portion 113 will now be described as an example. As shown, the first terminal portion 113 may include a housing 113a having a cavity therein, and the housing 113a may be integrally formed with the outer shell of the main body portion 112 and the housing 113a of the second terminal portion 114. The second terminal portion 114 may further include an end cap 113b closing the case 113a to form a receiving space in cooperation with the case 113a, and the end cap 113b may protrude upward with respect to the main body portion 112, so that the case 113a of the first terminal portion 113 and the case 113a of the second terminal portion 114 may guide the circuit breaker body 12 to be connected to the circuit breaker base 11. The housing 113a may extend upward beyond the end cap 113b to form a first mounting groove 115. The end cap 113b may also be aligned with an opposing handle of the breaker body 12 to facilitate aesthetics and operation of the breaker body 12. The first terminal portion 113 may further include a terminal socket accommodated in the accommodation space, and thus, a region of the end cap 113b opposite to the terminal socket may be provided with a hollow positioning post 113c so that the first terminal 121 of the circuit breaker body 12 may be connected to the terminal socket through the positioning post 113 c.

Thus, the acquisition module 117 may be provided with a locating hole 1172 that is sleeved to the locating post 113c, such that the first terminal 121 may pass through the locating hole 1172 on the acquisition module 117 and then through the locating post 113c into the interior of the first terminal 113 to connect with a terminal socket. In this way, the collection module 117 may cooperate with the terminal through which the induced current is obtained, thereby monitoring parameters such as the current voltage of the terminal. It can be seen that the connection placement of the acquisition module 117 arranged in this way with the terminal post of the circuit breaker body 12 is simple and does not require the use of additional electrical connections such as copper bars or the like, which not only simplifies secondary wiring but also reduces costs.

Alternatively, each of the first and second terminal portions 113 and 114 may be provided with three terminal sockets corresponding to A, B and C three phases, and the number of the collection modules 117 on the first terminal portion 113 may be correspondingly designed to be three to collect current parameters of each phase, thereby further improving the reliability of the circuit breaker base 11 and the molded case circuit breaker 10 to which the circuit breaker base is applied.

Alternatively, the first terminal portion 113 may further include a first conductive member 113d penetrating downward from the housing 113a thereof, and the second terminal portion 114 may also include a second conductive member 114a penetrating downward therefrom to be electrically connected to an external power source and an external load, respectively, thereby forming a wire path between the external power source, the circuit breaker base 11, the circuit breaker body 12, the circuit breaker base 11, and the external load.

Thus, as shown in fig. 5 to 7, in the power distribution system 100 having the molded case circuit breaker 10, when the circuit breaker base 11 is mounted to the underlying mounting plate 20, the first and second conductive members 113d and 114a can be directly connected to the power distribution system 100 through the mounting plate 20, for example, the required copper bar usage amount can be greatly reduced, compared to the prior art in which the copper bar is extended along the mounting plate and bent several times to connect to the bus bar at the side of the mounting plate facing the molded case circuit breaker, as compared to the bus bar 30 arranged transversely to the extending direction of the first and second conductive members 113d and 114a in the power distribution system 100 via the electrical connection member 40, such as a copper bar, on the side of the mounting plate 20 facing away from the molded case circuit breaker 10, in the circuit breaker base 11 of the present utility model, thereby greatly reducing the cost.

It should be understood that although the present disclosure has been described in terms of various embodiments, not every embodiment is provided with a separate technical solution, and this description is for clarity only, and those skilled in the art should consider the disclosure as a whole, and the technical solutions in the various embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.

The foregoing is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model. Any equivalent alterations, modifications and combinations thereof will be effected by those skilled in the art without departing from the spirit and principles of this utility model, and it is intended to be within the scope of the utility model.

Claims (10)

1. A molded case circuit breaker (10), the molded case circuit breaker (10) comprising a circuit breaker base (11) and a circuit breaker body (12) in pluggable engagement with the circuit breaker base (11), the circuit breaker body (12) comprising a first terminal (121) and a second terminal (122), characterized in that the circuit breaker base (11) comprises:

the base body (111) comprises a first wiring end part (113) and a second wiring end part (114) which are oppositely arranged to be respectively connected with the first wiring terminal (121) and the second wiring terminal (122) in a pluggable manner, a first mounting groove (115) is formed in one side of the first wiring end part (113) and/or the second wiring end part (114) facing the circuit breaker body (12), and the first mounting groove (115) is matched with the side surface, adjacent to the circuit breaker base (11), of the circuit breaker body (12) to form a first mounting cavity when the base body (111) is connected with the circuit breaker body (12);

and a collection module (117) accommodated in the first mounting cavity and provided with a positioning hole (1172) relative to the corresponding binding post so as to be electrically connected with the corresponding binding post while the corresponding binding post passes through the positioning hole (1172) to be connected with the corresponding binding post end.

2. The molded case circuit breaker (10) of claim 1 wherein said base body (111) further comprises a main body portion (112) located between said first terminal portion (113) and said second terminal portion (114), said main body portion (112) being provided with a second mounting groove (116) on a side facing said circuit breaker body (12) in communication with said first mounting groove (115), said second mounting groove (116) cooperating with a side of said circuit breaker body (12) adjacent said circuit breaker base (11) to form a second mounting cavity in communication with said first mounting cavity when said base body (111) is connected with said circuit breaker body (12);

the breaker body (12) further includes a communication module (118) housed within the second mounting cavity and electrically connected to the acquisition module (117).

3. The molded case circuit breaker (10) of claim 1 wherein a side of the first terminal portion (113) facing away from the circuit breaker body (12) is provided with a first conductive member (113 d) extending away from the first terminal portion (113), a side of the second terminal portion (114) facing away from the circuit breaker body (12) is provided with a second conductive member (114 a) extending away from the second terminal portion (114), the first conductive member (113 d) and the second conductive member (114 a) being for connection to an external power source and an external load, respectively.

4. The molded case circuit breaker (10) of claim 2 wherein the end of the communication module (118) adjacent to the collection module (117) is provided with a connection gap (1181) on a side facing away from the circuit breaker body (12), and the end of the collection module (117) adjacent to the communication module (118) is formed with a connection protrusion (1171) overlapping to the connection gap (1181) on a side facing away from the circuit breaker body (12).

5. The molded case circuit breaker (10) of claim 4 wherein an end of the communication module (118) not disposed opposite the acquisition module (117) extends beyond the circuit breaker base (11) and an end thereof extending beyond the circuit breaker base (11) is provided with an interface (1182).

6. The molded case circuit breaker (10) of claim 4 wherein said first and second terminal portions (113, 114) each comprise a housing (113 a) having a cavity therein, an end cap (113 b) closing said housing (113 a) to cooperate with said housing (113 a) to form an accommodation space, and a terminal socket located in said accommodation space, said end cap (113 b) having a hollow positioning post (113 c) in a region opposite said terminal socket.

7. The molded case circuit breaker (10) of claim 6 wherein said locating hole (1172) is sleeved outside of said locating post (113 c) such that a corresponding post is connected to a corresponding electrical outlet through said locating hole (1172).

8. The molded case circuit breaker (10) of claim 7 wherein said first terminal portion (113) and said second terminal portion (114) are each provided with three terminal sockets, and the number of said collection modules (117) is set to three to correspond to each of said terminal sockets of the terminal portion.

9. The molded case circuit breaker (10) of claim 1 wherein the acquisition module (117) has integrated thereon a current transformer, a temperature sensor, and a voltage sampling element.

10. A power distribution system (100), characterized in that a molded case circuit breaker (10) according to any one of claims 1 to 9 is provided therein.