CN216435653U - Circuit breaker and electronic equipment with same - Google Patents

Abstract

The utility model provides a circuit breaker and electronic equipment, including casing, electromagnetic system and mutual-inductor, mutual-inductor and electromagnetic system set up in the casing, and mutual-inductor and electromagnetic system electricity are connected, its characterized in that, mutual-inductor include mutual-inductor shell and two coils that range upon range of setting, and the holding chamber has been seted up to the mutual-inductor shell, and the coil holding is in the holding intracavity, through the coil that sets up range upon range of setting in the inside of mutual-inductor, and two coils are mutual noninterference at work.

Description

Circuit breaker and electronic equipment with same

Technical Field

The utility model relates to an intelligence switch technical field especially relates to a circuit breaker and have electronic equipment of circuit breaker.

Background

With the development of scientific technology, the industry of the internet of things gradually rises, and intelligent leakage circuit breaking products come into force, wherein a current transformer is an essential element in a circuit breaker, the traditional leakage circuit breaking can only provide leakage protection, and a single-winding current transformer is adopted to only play a role in leakage protection, but not play a role in leakage monitoring; the existing mutual inductor adopts a double-winding structure, which can provide a leakage protection function and a leakage monitoring function; however, the arrangement mode of the double windings is to arrange the two windings on the same iron core, so that the two windings can interfere with each other in the working process, and the false operation of electric leakage and inaccurate electric leakage acquisition are caused.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need for an improved circuit breaker and an electronic device having the circuit breaker, in which two coils are independent from each other and do not interfere with each other, and the functions of leakage protection and leakage monitoring are achieved while leakage malfunction and inaccurate leakage collection are avoided.

The utility model provides a circuit breaker, including casing, electromagnetic system and mutual-inductor, the mutual-inductor with electromagnetic system set up in the casing, just the mutual-inductor with the electromagnetic system electricity is connected, the mutual-inductor includes mutual-inductor shell and two coils that range upon range of setting, the holding chamber has been seted up to the mutual-inductor shell, the inside of mutual-inductor shell is provided with the separator, the separator will two independent cavities are separated into to the holding chamber, two range upon range of settings the coil difference holding is in two independence in the cavity, the coil holding in the holding intracavity.

So set up, through the interior separator that sets up at the shell of mutual-inductor to separate into independent cavity with the holding chamber, make two coils of range upon range of setting can install respectively in mutually independent cavity, in order to prevent that two coils are mutual noninterference in the work.

Further, the two chambers are symmetrically disposed about the partition, and the coil is symmetrically disposed about the partition.

In order to improve the monitoring precision of the mutual inductor in the induction precision, the mutual inductor further comprises iron cores, wherein the iron cores are arranged in the cavity, the number of the iron cores is two, and each iron core penetrates through one coil.

So set up, wear to establish the coil through making the iron core to improve the magnetic field intensity of coil, improve control and response precision.

In order to further prevent the coils from interfering with each other, the transformer further comprises at least one shield, which is arranged on the inner wall of the chamber.

So set up, through set up the shielding piece at the inner wall of cavity to further prevent that two sets of coils from interfering each other.

Furthermore, the shielding piece is provided with a notch, and the coil is accommodated in the shielding piece through the notch.

Furthermore, the number of the shielding pieces is two, the two shielding pieces are respectively arranged in the cavity, and the notches of the shielding pieces are arranged in a back-to-back manner.

In order to enable the coil to be connected with an external system, the mutual inductor further comprises a connecting wire, a clamping groove is formed in the outer side face of the mutual inductor shell, the connecting wire is installed in the clamping groove, and the coil is connected with the electromagnetic system or the detection system.

So set up, through setting up the connecting wire for the coil can be through connecting wire connection electromagnetic system and detecting system.

Further, one of the two coils is electrically connected with the electromagnetic system, and the other coil is electrically connected with the detection system.

Furthermore, the mutually independent chambers are annularly arranged, the coils are annularly arranged in the chambers, and two ends of each coil are oppositely arranged.

The utility model provides an electronic equipment, electronic equipment includes as above-mentioned arbitrary one circuit breaker.

The utility model provides a modified circuit breaker and have electronic equipment of circuit breaker, including the mutual-inductor among this circuit breaker, two coils mutual independence and mutual noninterference in this circuit breaker are when realizing the function of earth leakage protection and electric leakage control, avoid electric leakage malfunction and electric leakage to gather inaccurately.

Drawings

Fig. 1 is a schematic mechanism diagram of a transformer in a circuit breaker according to the present invention;

FIG. 2 is a schematic diagram of another perspective of the instrument transformer shown in FIG. 1;

FIG. 3 is a cross-sectional view taken along A-A of the instrument transformer shown in FIG. 2;

FIG. 4 is a perspective schematic view of another perspective view of the instrument transformer shown in FIG. 1;

FIG. 5 is a schematic cross-sectional view taken along A-A of the instrument transformer shown in FIG. 4;

fig. 6 is a schematic structural diagram of the circuit breaker provided by the present invention.

100. A transformer; 10. a transformer housing; 11. an accommodating cavity; 12. a clamping groove; 20. a coil; 30. a separator; 40. a shield; 50. an iron core; 60. and connecting the wires.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

With the development of scientific technology, the industry of the internet of things gradually rises, and intelligent leakage circuit breaking products come into force, wherein a current transformer is an essential element in a circuit breaker, the traditional leakage circuit breaking can only provide leakage protection, and a single-winding current transformer is adopted to only play a role in leakage protection, but not play a role in leakage monitoring; the existing mutual inductor adopts a double-winding structure, and not only can provide the function of leakage protection, but also can provide the function of leakage monitoring.

In the prior art, a circuit breaker includes a housing, an electromagnetic system, a transformer and a detection system, wherein the transformer, the electromagnetic system and the detection system are disposed in the housing, and the transformer is electrically connected to the electromagnetic system in a communicable manner, the electromagnetic system is used to control on/off of the circuit breaker, the housing is used to protect the electromagnetic system and the transformer 100, and the transformer is used to provide functions of leakage monitoring and leakage protection; the detection system is used for collecting the current value of the leakage current.

The electromagnetic system is internally provided with a leakage protection chip, a detection element and a tripping assembly, the detection element detects induced current generated by the current-limiting winding coil and drives the tripping assembly by controlling the leakage protection chip to trip the tripping assembly, so that the electromagnetic system can control the on-off of the circuit breaker according to a current signal transmitted by the mutual inductor; meanwhile, the other group of coils in the mutual inductor are monitoring winding coils, the monitoring winding coils are in communicative and electric connection with a detection system, the detection system comprises a control device, and the control device acquires the leakage current value in the coils, so that the mutual inductor is monitored and detected.

So set up, through setting up two sets of coils, can enough realize earth leakage protection's function and can realize the function of electric leakage control again.

However, the existing double-winding coil is arranged in a manner that two winding coils are wound on the same iron core, wherein one winding is a current-limiting winding coil, and the other winding is a monitoring winding coil; in the working process, when the detection element detects that leakage current is generated and the leakage voltage reaches the leakage current limit value, the leakage protection chip drives the tripping assembly to enable the leakage circuit breaker to trip; meanwhile, the monitoring winding coil is connected with a control device to collect the leakage current value so as to monitor the circuit; however, when an inductive load equipped with a motor is electrified, the instantaneous starting current is large, the coil of the monitoring winding generates induced current, and because the current-limiting winding and the coil of the monitoring winding are on the same iron core, the induced current can interfere with the coil of the current-limiting winding and generate induced current on the coil of the current-limiting winding, and the current detected by the detection element becomes too large, the leakage current in the circuit is mistakenly considered to exceed the threshold value by the leakage protection chip, the tripping component is controlled by the leakage protection chip to trip, the leakage circuit breaker trips, and the intelligent leakage circuit breaker trips mistakenly.

To above-mentioned technical problem, please refer to fig. 1 and fig. 6, fig. 1 is the utility model provides a mechanism schematic diagram of mutual-inductor in circuit breaker, fig. 6 is the utility model provides a structure schematic diagram of circuit breaker, the utility model provides an improved circuit breaker and have electronic equipment of circuit breaker, not only include above-mentioned device in this circuit breaker and still include mutual-inductor 100, this mutual-inductor 100 is including the mutual-inductor shell 10 that has separator 30 and two coils 20 of range upon range of setting, two coils 20 pass through separator 30 mutual separation, two coils 20 in this circuit breaker are mutually independent and mutual noninterference, when realizing the function of earth leakage protection and earth leakage control, avoid electric leakage malfunction and earth leakage to gather inaccurately.

Referring to fig. 2 to 5, fig. 2 is a schematic structural diagram of another view angle of the transformer shown in fig. 1, fig. 3 is a sectional view of the transformer shown in fig. 2 along a-a direction, fig. 4 is a schematic perspective structural diagram of another view angle of the transformer shown in fig. 1, and fig. 5 is a schematic structural diagram of a sectional view of the transformer shown in fig. 4 along a-a direction.

In this embodiment, the transformer 100 includes a transformer housing 10, a coil 20 and a connecting wire 60, the coil 20 is accommodated in the transformer housing 10, the connecting wire 60 is disposed on an outer side surface of the transformer 100, and the connecting wire 60 and the coil 20 are connected to each other; wherein the coil 20 is used for leakage monitoring and leakage protection; the connection line 60 is used to connect the coil 20 with an external device; the transformer enclosure 10 serves to protect the coil 20.

The mutual inductor shell 10 is approximately disc-shaped, and a through hole is formed in the middle of the mutual inductor shell 10; annular holding chamber 11 has been seted up to mutual-inductor shell 10 inside, is equipped with separator 30 along the middle part of the direction of thickness in holding chamber 11, and this separator 30 separates holding chamber 11 into two mutually independent cavities, and two mutually independent cavities set up about separator 30 symmetry.

So set up for two mutually independent cavities are separated into to holding chamber 11, so that install coil 20 to two independent cavities respectively in, thereby make coil 20 separate each other, mutual noninterference.

It can be understood that the present invention is not limited to the shape of the transformer housing 10, and in other embodiments, the transformer housing 10 may also be square, as long as the transformer housing 10 is provided with a cavity capable of accommodating the coil 20.

Meanwhile, in the present embodiment, the number of the coils 20 is two, two coils 20 are stacked in the accommodating chamber 11, and each coil 20 is installed in an independent chamber respectively, the coils 20 are annularly arranged along the accommodating chamber 11 which is annularly arranged, and the head and the tail of each coil 20 are opposite to each other; and the two coils 20 are symmetrically disposed about the separator 30; in the present embodiment, the stacked arrangement means that the two coils 20 are respectively arranged in the symmetrically arranged cavities, and the two coils 20 are not in contact with each other.

By providing two coils 20, one of the coils 20 provides the leakage protection function, the other coil 20 provides the leakage monitoring function, and the two coils 20 are respectively disposed in different mounting members, so that the two groups of coils 20 do not interfere with each other.

It should be noted that, in order to increase the induced current generated by the coil, so that the detecting element can detect the induced current, in the embodiment, the transformer 100 further includes an iron core 50, and an annular iron core 50 is disposed inside each coil 20 to increase the induced current generated by the coil 20, and the iron core 50 penetrates through the coil 20 to increase the induced current of the coil 20, thereby improving the monitoring and sensing accuracy.

Further, in order to avoid the coil 20 in different cavities to influence each other, simultaneously in order to improve the precision, the utility model discloses still provide shield 40, this shield 40 sets up between each cavity inner wall and coil 20 for the induction magnetic layer that shielding coil 20 produced.

Specifically, in this embodiment, the shielding member 40 is a shielding tube with a cross section of Contraband type, a notch is formed on one side of the shielding tube, the coil 20 is accommodated in the shielding tube through the notch of the shielding tube, and the number of the shielding tubes is two, the two shielding tubes are respectively disposed in the relatively independent chambers, and the notches of the shielding tubes are disposed opposite to each other; the shielding piece 40 surrounds the coils 20 which are symmetrically arranged, so that induced magnetic fields generated by the coils 20 after being electrified are shielded from interfering with each other; the accuracy of the leakage monitoring of the coil 20 is improved and the leakage malfunction is avoided.

In other words, by disposing the shields 40 between the symmetrically disposed coils 20 and causing the shields 40 to surround the symmetrically disposed coils 20, respectively, the coils 20 are prevented from interfering with each other after being energized, so that the monitoring accuracy is improved.

It can be understood that the present invention is not limited to the arrangement of the shielding member 40, and in other embodiments, in order to further improve the monitoring precision, the shielding member 40 may be uniformly laid on the inner walls of the independent chambers, as long as the coils 20 arranged in a stacked manner are not influenced by the shielding member 40.

It should be noted that the present invention is not limited to the shielding member 40 being a shielding tube with a cross section of Contraband type, and in other embodiments, the shielding member 40 may be an annular cylinder or an annular square cylinder as long as the shielding member 40 can enclose the coil 20, so that the shielding member 40 can shield the interference of other coils 20.

In addition, in order to make the inside coil 20 of mutual-inductor shell 10 can with external device interconnect under setting up, the utility model discloses still provide connecting wire 60, the lateral surface of mutual-inductor shell 10 is equipped with joint groove 12, the connecting piece fixing clip connects in joint groove 12, connecting wire 60 roughly is rectangular form, and connecting wire 60 connects coil 20's both ends, make coil 20 pass through connecting wire 60 and external device interconnect, specifically, connecting wire 60 is the flexible wire, can be copper core polyvinyl chloride insulation flexible wire or copper core polyvinyl chloride insulation installation flexible wire, as long as make coil 20 can through connecting wire 60 and external device and electromagnetic system electric connection.

By such an arrangement, the connecting wires 60 are provided, so that the coil 20 can be electrically connected to an external device and an electromagnetic system through the connecting wires 60.

When an inductive load provided with a motor is electrified, the instantaneous starting current is larger than the coil 20 of the monitoring winding to generate an induced current, and the coil of the current-limiting winding and the coil of the monitoring winding are not in the same iron core and are separated and independent from each other through the separator 30 and the shielding piece 40, so the generated induced current cannot interfere with the coil 20 of the current-limiting winding, and the false tripping caused by the false response of a leakage protection chip cannot be caused.

Furthermore, the leakage protection chip is connected with a tripping component of the leakage circuit breaker, and when the leakage current value is greater than a preset threshold value, the leakage protection chip controls the tripping component of the leakage circuit breaker to be switched off. If the leakage condition exists and the leakage current value is larger than the preset threshold value, the leakage protection chip forcibly controls the tripping assembly of the circuit breaker to be disconnected, so that the whole system is well protected, and further damage to equipment is prevented.

It should be noted that, in this embodiment, the circuit breaker further includes a wireless communication device for communicating with a server of the peripheral; the acquisition circuit is connected with the wireless communication device. The acquisition circuit is used for acquiring a leakage current value and sending the leakage current value to an external server for storage through the wireless communication device, and a user can log in the server through an existing mobile terminal (mobile phone) to acquire related data so as to know the operation condition of the intelligent leakage circuit breaker; specifically, the wireless communication device may be bluetooth or WIFI.

The utility model also provides an electronic equipment, this electronic equipment include as above-mentioned arbitrary one the circuit breaker, electronic equipment is in the use, the circuit breaker can provide earth leakage protection for electronic equipment promptly, can detect electronic equipment's the electric leakage condition again to protect electronic equipment.

The features of the above-described embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the features in the above-described embodiments are not described, but should be construed as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the features.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be taken as limiting the present invention, and that suitable modifications and variations of the above embodiments are within the scope of the invention as claimed.

Claims (10)

1. The circuit breaker comprises a shell, a detection system, an electromagnetic system and a mutual inductor, wherein the detection system, the mutual inductor and the electromagnetic system are arranged in the shell, and the mutual inductor is electrically connected with the electromagnetic system and the detection system respectively, and the circuit breaker is characterized in that the mutual inductor comprises a mutual inductor shell (10) and two coils (20) which are arranged in a stacked mode, a containing cavity (11) is formed in the mutual inductor shell (10), a partition (30) is arranged inside the mutual inductor shell (10), the containing cavity (11) is divided into two independent cavities by the partition (30), the coils (20) which are arranged in the stacked mode are respectively contained in the two independent cavities, and the coils (20) are contained in the containing cavity (11).

2. The circuit breaker according to claim 1, characterized in that said two chambers are arranged symmetrically with respect to said partition (30), said coil (20) being arranged symmetrically with respect to said partition (30).

3. The circuit breaker according to claim 1, wherein said transformer further comprises at least one shield (40), said shield (40) being disposed between an inner wall of each of said chambers and said coil.

4. A circuit breaker according to claim 3 wherein the shield (40) is notched, the coil (20) being received in the shield (40) through the notch.

5. The circuit breaker according to claim 4, wherein the number of said shielding members (40) is two, two of said shielding members (40) are respectively disposed in said chamber, and the notches of said shielding members (40) are oppositely disposed.

6. The circuit breaker according to claim 1, wherein said transformer further comprises iron cores (50), said iron cores (50) being disposed in said chamber, said number of iron cores (50) being two, each iron core (50) being pierced with one of said coils (20).

7. The circuit breaker according to claim 1, wherein the transformer further comprises a connecting wire (60), a clamping groove (12) is formed in an outer side surface of the transformer housing (10), the connecting wire (60) is installed in the clamping groove (12), and the connecting wire (60) connects the coil (20) and the electromagnetic system or the detection system.

8. The circuit breaker according to claim 1, characterized in that one of the two coils (20) is electrically connected to the electromagnetic system and the other is electrically connected to the detection system.

9. The circuit breaker according to claim 1, wherein the chambers independent of each other are annularly arranged, the coil (20) is annularly arranged in the chambers, and both ends of the coil (20) are oppositely arranged.

10. An electronic device, characterized in that it comprises a circuit breaker according to any one of claims 1 to 9.

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