CN218123337U - Automatic reclosing circuit breaker - Google Patents

Abstract

The utility model relates to a circuit breaker technical field, concretely relates to automatic reclosing lock circuit breaker. The utility model provides an automatic reclosing lock circuit breaker includes: the breaker comprises a breaker body, wherein a first breakpoint and a motor are contained in the breaker body, and the first breakpoint is opened and closed through the motor; the magnetic holding device is internally provided with a second breakpoint which is connected with the first breakpoint in series; the circuit board is electrically connected with the motor and the magnetic holding device and is suitable for controlling the opening and closing states of the first breakpoint and the second breakpoint, when the first breakpoint and the second breakpoint are both closed, the circuit breaker body is closed, otherwise, the circuit breaker body is opened, a first moving contact and a first fixed contact are arranged in the circuit breaker body to form the first breakpoint, and a second moving contact and a second fixed contact are arranged in the magnetic holding device to form the second breakpoint. The utility model provides an automatic reclosing circuit breaker through introducing magnetic keeper, can reduce the frequency of opening and shutting of first breakpoint, has prolonged automatic reclosing circuit breaker's electric life.

Description

Automatic reclosing circuit breaker

Technical Field

The utility model relates to a circuit breaker technical field, concretely relates to automatic reclosing circuit breaker.

Background

The automatic reclosing circuit breaker can automatically reclose the circuit breaker by a mechanical device or a relay automatic device after the circuit breaker is opened due to a certain fault. Because most of power line faults are transient faults, after the line is quickly disconnected by a breaker, the insulation level of a fault point can be automatically recovered, the fault disappears immediately, and at the moment, if the disconnected breaker is automatically re-closed, namely, automatically re-closed, normal power supply can be recovered. Therefore, the automatic reclosing can provide power supply reliability, and the times and time of line power failure are reduced; the device can also play a role in correcting the error tripping caused by poor mechanism or relay protection misoperation of the circuit breaker.

However, in the existing automatic reclosing circuit breaker, the switching-on and the switching-off of the circuit breaker are realized only by depending on the connection and the disconnection of the moving contact and the fixed contact of the operating mechanism, the moving contact inevitably generates abrasion in the action process, electric arcs generated between the moving contact and the fixed contact can also accelerate ablation and abrasion of the contacts, and the electrical service life of the circuit breaker is short.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the electric short-lived defect of the auto-reclosing circuit breaker among the prior art to an auto-reclosing circuit breaker is provided.

The utility model provides an automatic reclosing lock circuit breaker, include:

the circuit breaker comprises a circuit breaker body, wherein a first breakpoint and a motor are arranged in the circuit breaker body, and the first breakpoint is opened and closed through the motor;

the magnetic holding device is internally provided with a second breakpoint which is connected with the first breakpoint in series;

the circuit board is electrically connected with the motor and the magnetic holding device and is suitable for controlling the opening and closing states of the first breakpoint and the second breakpoint, when the first breakpoint and the second breakpoint are both closed, the circuit breaker body is switched on, otherwise, the circuit breaker body is switched off;

the breaker body is internally provided with a first moving contact and a first fixed contact to form a first breakpoint, and the magnetic holding device is internally provided with a second moving contact and a second fixed contact to form a second breakpoint.

Optionally, the magnetic holding device includes:

the coil is electrically connected with the circuit board;

the first end of the first magnetic yoke and the first end of the second magnetic yoke are respectively connected with two ends of the coil;

the permanent magnet is rotatably arranged in the circuit breaker body, two different ends of the permanent magnet are respectively provided with a first armature overhanging end and a second armature overhanging end, the first armature overhanging end and the second armature overhanging end both overhang the permanent magnet, the second end of the first magnetic yoke is arranged between the first armature overhanging end and the second armature overhanging end at one end of the permanent magnet, and the second end of the second magnetic yoke is arranged between the first armature overhanging end and the second armature overhanging end at the other end of the permanent magnet;

one end of the second transmission part is in transmission connection with the permanent magnet, and the other end of the second transmission part is in transmission connection with the second moving contact;

the second moving contact is arranged on the conductor, and one end of the conductor is connected to a main circuit of the circuit breaker body;

the second fixed contact is arranged on the lead piece, and one end of the lead piece is connected to a main line of the circuit breaker body;

the permanent magnet has a first state that the first armature overhanging end is close to the first magnetic yoke and a second state that the first armature overhanging end is close to the second magnetic yoke, and the second transmission part is suitable for controlling the opening and closing of the second break point according to the state of the permanent magnet.

Optionally, the conductor includes a wire outgoing member and an elastic metal member, one end of the wire outgoing member is connected with one end of the elastic metal member, the other end of the wire outgoing member is connected to the main line of the circuit breaker body, and the second moving contact is arranged at the other end of the elastic metal member.

Optionally, a trigger is arranged on the permanent magnet, a first clamping groove is arranged on the second transmission piece, and one end of the trigger, which is far away from the permanent magnet, is clamped into the first clamping groove;

and/or a second clamping groove is arranged on the second transmission piece, and one end of the elastic metal piece, which is provided with the second moving contact, is clamped into the second clamping groove.

Optionally, the magnetic holding device further includes a magnetic holding case, the coil, the first magnetic yoke, the second magnetic yoke, the permanent magnet, the second transmission member, the electrical conductor, and the lead element are all disposed in the magnetic holding case, the magnetic holding case is detachably connected to the circuit breaker body, and the electrical conductor and the lead element extend out of the magnetic holding case and are respectively connected to a main line of the circuit breaker body.

Optionally, the handle is further included, and the first breaking point can be opened and closed through the handle.

Optionally, an operating mechanism is arranged in the circuit breaker body, the operating mechanism is provided with the first moving contact, the operating mechanism is in transmission connection with a first transmission piece, the first transmission piece is rotatably arranged on the circuit breaker body and is connected with the handle through a connecting rod, teeth are arranged on the periphery of the first transmission piece, a worm matched with the teeth is arranged on an output shaft of the motor and is in meshing transmission with the first transmission piece, and the first transmission piece is suitable for controlling the opening and closing of the first breakpoint through the operating mechanism.

Optionally, the circuit breaker body further includes a wire inlet end, a wire outlet end, an arc extinguishing system, a thermal tripping system, and an electromagnetic system;

the wire inlet end, the thermal trip system, the operating mechanism, the electromagnetic system and the wire outlet end are sequentially arranged.

Optionally, the incoming line end includes a first incoming line end and a second incoming line end, the outgoing line end includes a first outgoing line end and a second outgoing line end, the first incoming line end is connected with the first outgoing line end, the first breakpoint and the second breakpoint are arranged in the middle, and the second incoming line end is connected with the second outgoing line end.

Optionally, the second breakpoint is arranged behind the first breakpoint along a direction from the first incoming line end to the first outgoing line end.

The utility model has the advantages of it is following:

1. the utility model provides an automatic reclosing circuit breaker, the circuit breaker is equipped with first breakpoint and second breakpoint, two breakpoints are established ties, wherein first breakpoint can realize opening and shutting through the motor, the second breakpoint can realize opening and shutting through the magnetic retention device, the circuit board can be controlled motor and magnetic retention device, compare with traditional automatic reclosing circuit breaker, through introducing the magnetic retention device, can reduce the frequency of opening and shutting of first breakpoint, reduce the contact wearing and tearing of first breakpoint to the electric life of automatic reclosing circuit breaker has been prolonged.

2. The utility model provides an automatic reclosing circuit breaker sets up tooth in the periphery of first transmission piece, be provided with on the output shaft of motor with the worm of tooth adaptation, worm and the transmission of first transmission piece meshing, the transmission structure is retrencied, the high inner space of just having saved the circuit breaker of transmission efficiency.

3. The utility model provides an automatic reclosing circuit breaker, along first inlet wire end to the direction of first leading-out terminal, set up the second breakpoint at first breakpoint rear, can make things convenient for circuit board unified control, make the structure compacter.

4. The utility model provides an automatic reclosing lock circuit breaker, with the magnetic retention device as an organic whole subassembly, the installation of the magnetic retention device of can being convenient for and dismantlement, but the magnetic retention device independent production, follow-up equipment has improved the production efficiency of circuit breaker in the circuit breaker.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an automatic reclosing lock circuit breaker according to embodiment 1 of the present invention;

fig. 2 is a back structural schematic diagram of the automatic reclosing circuit breaker of fig. 1;

fig. 3 is a schematic structural view of a magnetic holding device of the auto reclosing circuit breaker of fig. 1;

fig. 4 is a schematic structural diagram of an automatic reclosing lock breaker according to embodiment 2 of the present invention;

fig. 5 is a schematic structural view of a magnetic holding device of the auto reclosing circuit breaker of fig. 4.

Description of reference numerals:

10. a wire inlet end; 101. a first incoming line end; 102. a second incoming line end; 20. a thermal trip system; 30. an arc extinguishing system; 40. an operating mechanism; 401. a first moving contact; 402. a first fixed contact; 41. a first transmission member; 42. a connecting rod; 43. a handle; 50. a motor; 60. a circuit board; 70. an electromagnetic system; 80. a magnetic retaining device; 81. a coil; 821. a first yoke; 822. a second yoke; 83. a permanent magnet; 831. a first armature overhang; 832. a second armature overhang; 833. a trigger; 84. a second transmission member; 85. an electrical conductor; 851. a second moving contact; 852. an outlet member; 853. an elastic metal member; 86. a lead member; 861. a second fixed contact; 87. a magnetic retaining case; 90. a wire outlet end; 901. a first outlet terminal; 902. a second outlet terminal.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

Referring to fig. 1-3, an embodiment of the present invention provides an automatic reclosing circuit breaker, including:

the circuit breaker comprises a circuit breaker body, wherein a first breakpoint and a motor 50 are arranged in the circuit breaker body, and the first breakpoint is opened and closed through the motor 50;

the magnetic holding device 80 is internally provided with a second breakpoint which is connected with the first breakpoint in series;

the circuit board 60 is electrically connected with the motor 50 and the magnetic holding device 80 and is suitable for controlling the opening and closing states of the first breakpoint and the second breakpoint, when the first breakpoint and the second breakpoint are both closed, the breaker body is switched on, otherwise, the breaker body is switched off;

the breaker body is provided with a first moving contact 401 and a first fixed contact 402 to form a first breakpoint, and the magnetic holding device 80 is provided with a second moving contact 851 and a second fixed contact 861 to form a second breakpoint.

In this embodiment, the circuit breaker is equipped with first breakpoint and second breakpoint, two breakpoints are established ties, wherein first breakpoint can realize opening and shutting through motor 50, the second breakpoint can realize opening and shutting through magnetic retaining device 80, circuit board 60 can control motor 50 and magnetic retaining device 80, compare with traditional reclose circuit breaker, through introducing magnetic retaining device 80, can reduce the frequency of opening and shutting of first breakpoint, reduce the contact wearing and tearing of first breakpoint, thereby the electric life of reclose circuit breaker has been prolonged.

Specifically, the magnetic retaining device 80 includes:

a coil 81 electrically connected to the circuit board 60;

a first yoke 821 and a second yoke 822, a first end of the first yoke 821 and a first end of the second yoke 822 being connected to both ends of the coil 81, respectively;

the permanent magnet 83 is rotatably arranged in the circuit breaker body, two different magnetic poles of the permanent magnet 83 are respectively provided with a first armature extending end 831 and a second armature extending end 832, the first armature extending end 831 and the second armature extending end 832 extend out of the permanent magnet 83, the second end of the first magnetic yoke 821 is arranged between the first armature extending end 831 and the second armature extending end 832 at one end of the permanent magnet 83, and the second end of the second magnetic yoke 822 is arranged between the first armature extending end 831 and the second armature extending end 832 at the other end of the permanent magnet 83;

one end of the second transmission member 84 is in transmission connection with the permanent magnet 83, and the other end of the second transmission member 84 is in transmission connection with the second moving contact 851;

the conductive body 85, the second moving contact 851 is arranged on the conductive body 85, and one end of the conductive body 85 is connected with the main circuit of the breaker body;

a lead wire 86, wherein a second fixed contact 861 is arranged on the lead wire 86, and one end of the lead wire 86 is connected to a main line of the circuit breaker body;

in this embodiment, the permanent magnet 83 has a first state that the first armature overhang 831 is close to the first yoke 821 and a second state that the first armature overhang 831 is close to the second yoke 822, the second transmission member 84 is adapted to control the opening and closing of the second breakpoint according to the state of the permanent magnet 83, and the second transmission member 84 converts the state change of the permanent magnet 83 into the position change of the second movable contact 851, so as to implement the opening and closing of the second breakpoint.

It is easy to understand that "close to" can be understood not only as the second end of a yoke directly contacting with an armature overhang end, because of the influence of the processing precision, when the moving contact and the fixed contact at the second break point contact, the second end of the first yoke 821 and the first armature overhang end 831 are close to each other but may have a gap therebetween, which also belongs to the category of "close to", and similarly, referring to fig. 3, when the second armature overhang end 832 has contacted with the second end of the second yoke 822, the first armature overhang end 831 and the second end of the first yoke 821 are close to each other but may have a gap therebetween.

In this embodiment, the electric conductor 85 and the lead 86 may be connected to one of the main lines connected to the magnetic holding device 80 and the other to the main line led out from the magnetic holding device 80, but not particularly limited thereto, and as an embodiment, referring to fig. 1, the electric conductor 85 is connected to the main line led out from the magnetic holding device 80 and the lead 86 is connected to the main line connected to the magnetic holding device 80.

In this embodiment, the permanent magnet 83 has a first state that the first armature overhang 831 is close to the first yoke 821 and a second state that the first armature overhang 831 is close to the second yoke 822, the permanent magnet 83 can be changed by only sending a positive (negative) dc pulse voltage signal to the circuit board 60 to excite the coil 81, and the magnetic keeper 80 has the advantages of power saving, stable performance, small size, large carrying capacity, and the like, and has a long electrical life and a long mechanical life, and can be serially connected to the auto-reclosing circuit breaker to prolong the electrical life of the auto-reclosing circuit breaker.

In addition to the above embodiments, in a preferred embodiment, the electric conductor 85 includes an outlet 852 and an elastic metal member 853, one end of the outlet 852 is connected to one end of the elastic metal member 853, the other end of the outlet 852 is connected to the main line of the breaker body, and the other end of the elastic metal member 853 is provided with a second movable contact 851.

The second moving contact 851 is disposed on the elastic metal member 853, and can make the electric conductor 85 have a certain adjusting capability when acting by the elasticity of the elastic metal member 853, so as to prolong the service life thereof.

In this embodiment, a transmission structure for converting the swing of the permanent magnet 83 into the second breakpoint opening and closing motion is not specifically limited, and may be that a trigger 833 is disposed on the permanent magnet 83, a first slot is disposed on the second transmission member 84, one end of the trigger 833, which is far away from the permanent magnet 83, is clamped into the first slot, the second transmission member 84 is disposed above one end of the elastic metal member 853, which is provided with the second moving contact 851, and when the permanent magnet 83 swings, the trigger 833 drives the second transmission member 84 to press down/lift up, so that the second moving contact 851 is connected to/separated from the second fixed contact 861.

As an implementation manner, it can also be that a trigger 833 is disposed on the permanent magnet 83, a second locking groove is disposed on the second transmission member 84, one end of the elastic metal member 853, which is provided with the second moving contact 851, is locked into the second locking groove, the trigger 833 is hinged to the second transmission member 84, and when the permanent magnet 83 swings, the trigger 833 drives the second transmission member 84 to press down/lift up, so that the second moving contact 851 is connected to/separated from the second fixed contact 861.

As an implementation manner, referring to fig. 3, it may also be that a trigger 833 is disposed on the permanent magnet 83, a first locking slot and a second locking slot are disposed on the second transmission member 84, one end of the trigger 833, which is far away from the permanent magnet 83, is locked into the first locking slot, one end of the elastic metal member 853, which is provided with the second moving contact 851, is locked into the second locking slot, and when the permanent magnet 83 swings, the trigger 833 drives the second transmission member 84 to press down/lift up, so that the second moving contact 851 is connected to/separated from the second fixed contact 861.

On the basis of the above embodiments, in a preferred embodiment, the auto-reclosing circuit breaker further includes a handle 43, and the first disconnection point can be opened and closed by the handle 43. The handle 43 is added into the automatic reclosing circuit breaker to control the opening and closing of the circuit breaker, so that the circuit breaker is prevented from being uncontrollable when a circuit board 60 breaks down, and the safety of the circuit breaker is improved.

In addition to the above embodiments, in a preferred embodiment, an operating mechanism 40 is disposed in the circuit breaker body, a first movable contact 401 is disposed on the operating mechanism 40, the operating mechanism 40 is in transmission connection with a first transmission member 41, the first transmission member 41 is rotatably disposed on the circuit breaker body, the first transmission member 41 is connected to the handle 43 through a link 42, teeth are disposed on an outer periphery of the first transmission member 41, a worm adapted to the teeth is disposed on an output shaft of the motor 50, the worm is in meshing transmission with the first transmission member 41, and the first transmission member 41 is adapted to control opening and closing of the first breakpoint through the operating mechanism 40.

The structure of the operating mechanism 40 and the principle of how the handle 43 drives the operating system to act through the first transmission member 41 belong to the prior art, and are not described herein again. On the basis, the teeth are arranged on the periphery of the first transmission piece 41, the output shaft of the motor 50 is provided with a worm matched with the teeth, and the worm is in meshing transmission with the first transmission piece 41, so that the motor 50 can control the first transmission piece 41 to rotate, and further the opening and closing of the first breakpoint are controlled.

The periphery of the first transmission piece 41 is provided with teeth, the output shaft of the motor 50 is provided with a worm matched with the teeth, the worm is meshed with the first transmission piece 41 for transmission, the transmission structure is simple, the transmission efficiency is high, and the internal space of the circuit breaker is saved.

On the basis of the above embodiments, in a preferred embodiment, the circuit breaker body further includes a wire inlet end 10, a wire outlet end 90, an arc extinguishing system 30, a thermal trip system 20, and an electromagnetic system 70;

the inlet terminal 10, the thermal trip system 20, the operating mechanism 40, the electromagnetic system 70 and the outlet terminal 90 are arranged in sequence.

The arc extinguishing system 30, the thermal trip system 20, and the electromagnetic system 70 are all prior art and will not be described herein.

In addition to the above embodiments, in a preferred embodiment, the line inlet end 10 includes a first line inlet end 101 and a second line inlet end 102, the line outlet end 90 includes a first line outlet end 901 and a second line outlet end 902, the first line inlet end 101 is connected to the first line outlet end 901 in a line, a first disconnection point and a second disconnection point are provided in the middle, and the second line inlet end 102 is connected to the second line outlet end 902 in a line.

In this embodiment, the first disconnection point and the second disconnection point are disposed between the connection line between the first incoming line end 101 and the first outgoing line end 901, the first incoming line end 101 is connected to a live line, the second incoming line end 102 is connected to a zero line, and the first outgoing line end 901 and the second outgoing line end 902 are connected to a load end, so as to make the structure more simplified, in this embodiment, the second incoming line end 102 is directly connected to the second outgoing line end 902, and no disconnection point is disposed in the middle of the second incoming line end 102 and the second outgoing line end 902.

In this embodiment, the first breakpoint and the second breakpoint are disposed between the connection lines of the first incoming line terminal 101 and the first outgoing line terminal 901, and the arrangement sequence is not specifically limited, and as an implementation manner, the first breakpoint is disposed behind the second breakpoint along the direction from the first incoming line terminal 101 to the first outgoing line terminal 901, for example, the first breakpoint and the second breakpoint are disposed in the circuit breaker in the order of the incoming line terminal 10, the magnetic holding device 80, the thermal trip system 20, the operating mechanism 40, the electromagnetic system 70, and the outgoing line terminal 90; as an embodiment, the second disconnection point is disposed behind the first disconnection point along the direction from the first incoming line end 101 to the first outgoing line end 901, and referring to fig. 1, the incoming line end 10, the thermal trip system 20, the operating mechanism 40, the electromagnetic system 70, the magnetic holding device 80, and the outgoing line end 90 are disposed in this order in the circuit breaker.

In this embodiment, the second breakpoint is disposed behind the first breakpoint along the direction from the first incoming line end 101 to the first outgoing line end 901, so as to facilitate the unified control of the circuit board 60, and make the structure more compact.

Example 2

Referring to fig. 4-5, the present embodiment differs from the previous embodiments in that: the magnetic holding device 80 further comprises a magnetic holding casing 87, wherein the coil 81, the first magnetic yoke 821, the second magnetic yoke 822, the permanent magnet 83, the second transmission piece 84, the electric conductor 85 and the lead piece 86 are all arranged in the magnetic holding casing 87, the magnetic holding casing 87 is detachably connected with the circuit breaker body, and the electric conductor 85 and the lead piece 86 extend out of the magnetic holding casing 87 and are respectively connected with a main line of the circuit breaker body.

In this embodiment, the magnetic retaining device 80 is used as an integrated component, so that the magnetic retaining device 80 can be conveniently mounted and dismounted, the magnetic retaining device 80 can be independently produced and subsequently assembled in the circuit breaker, and the production efficiency of the circuit breaker is improved.

It is easy to understand that, in order to ensure that the magnetic holding device 80 can work normally, the permanent magnet 83 should be rotatably disposed in the circuit breaker body, in this embodiment, the permanent magnet 83 is rotatably disposed in the magnetic holding housing 87, and after the magnetic holding housing 87 is installed in the circuit breaker body, the permanent magnet 83 can still be understood as "rotatably disposed in the circuit breaker body".

Based on the above specific implementation, the following is an introduction of the complete machine working state of the automatic reclosing circuit breaker of this embodiment:

1. and (3) manual state: the manual operation handle 43 drives the operation mechanism 40 to move, controls the first breaking point to open and close, and performs opening and closing operations on the circuit breaker.

2. Automatic state: (1) when the circuit breaker frequently works under the rated current, a positive (negative) direct current pulse voltage signal is sent out by a program of the circuit board 60 to excite the coil 81, and the opening and closing of a second breakpoint are controlled by the magnetic holding device 80 to carry out the opening and closing operation on the circuit breaker;

(2) when the circuit breaker encounters a load fault and a large current (load short circuit or overload), the magnetic retaining device 80 does not work; at this time, the electromagnetic system 70 or the thermal trip system 20 of the circuit breaker drives the operating mechanism 40 to open the brake, so as to cut off the fault current and ensure the safety of the load.

3. Automatic closing: after the load fault is eliminated, a remote control sends out an instruction, a program of the circuit board 60 sends out a signal to the motor 50, the motor 50 drives the operating mechanism 40 to act, and the breaker is switched on and electrified.

By adding the magnetic holding device 80 into the automatic reclosing circuit breaker, the switching frequency of the first break point can be reduced, and the overall electrical service life of the circuit breaker is further prolonged.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (10)

1. An automatic reclosing circuit breaker, comprising:

the circuit breaker comprises a circuit breaker body, wherein a first breakpoint and a motor (50) are arranged in the circuit breaker body, and the first breakpoint is opened and closed through the motor (50);

the magnetic holding device (80) is internally provided with a second breakpoint, and the second breakpoint is connected with the first breakpoint in series;

the circuit board (60) is electrically connected with the motor (50) and the magnetic holding device (80) and is suitable for controlling the opening and closing states of the first breakpoint and the second breakpoint, when the first breakpoint and the second breakpoint are both closed, the circuit breaker body is switched on, otherwise, the circuit breaker body is switched off;

a first moving contact (401) and a first fixed contact (402) are arranged in the circuit breaker body to form a first breakpoint, and a second moving contact (851) and a second fixed contact (861) are arranged in the magnetic holding device (80) to form a second breakpoint.

2. The recloser breaker according to claim 1 wherein the magnetic retention means (80) comprises:

a coil (81) electrically connected to the circuit board (60);

a first yoke (821) and a second yoke (822), wherein a first end of the first yoke (821) and a first end of the second yoke (822) are respectively connected with two ends of the coil (81);

the permanent magnet (83) is rotatably arranged in the circuit breaker body, two different ends of the permanent magnet (83) are respectively provided with a first armature overhanging end (831) and a second armature overhanging end (832), the first armature overhanging end (831) and the second armature overhanging end (832) both overhang the permanent magnet (83), the second end of the first magnetic yoke (821) is arranged between the first armature overhanging end (831) and the second armature overhanging end (832) at one end of the permanent magnet (83), and the second end of the second magnetic yoke (822) is arranged between the first armature overhanging end (831) and the second armature overhanging end (832) at the other end of the permanent magnet (83);

one end of the second transmission piece (84) is in transmission connection with the permanent magnet (83), and the other end of the second transmission piece (84) is in transmission connection with the second moving contact (851);

the second moving contact (851) is arranged on the conductive body (85), and one end of the conductive body (85) is connected to a main line of the circuit breaker body;

the lead wire piece (86), the second fixed contact (861) is arranged on the lead wire piece (86), and one end of the lead wire piece (86) is connected to a main circuit of the circuit breaker body;

the permanent magnet (83) has a first state that the first armature overhanging end (831) is close to the first magnetic yoke (821) and a second state that the first armature overhanging end (831) is close to the second magnetic yoke (822), and the second transmission piece (84) is suitable for controlling the opening and closing of the second break point according to the state of the permanent magnet (83).

3. The recloser circuit breaker according to claim 2, wherein the electrical conductor (85) comprises an outlet member (852) and a resilient metal member (853), one end of the outlet member (852) is connected to one end of the resilient metal member (853), the other end of the outlet member (852) is connected to the main circuit of the circuit breaker body, and the second movable contact (851) is disposed at the other end of the resilient metal member (853).

4. The recloser circuit breaker according to claim 3, wherein a trigger (833) is disposed on the permanent magnet (83), a first card slot is disposed on the second transmission member (84), and one end of the trigger (833) away from the permanent magnet (83) is clamped into the first card slot;

and/or a second clamping groove is arranged on the second transmission piece (84), and one end of the elastic metal piece (853) provided with the second moving contact (851) is clamped into the second clamping groove.

5. The recloser circuit breaker according to claim 2, wherein the magnetic retention device (80) further comprises a magnetic retention housing (87), the coil (81), the first yoke (821), the second yoke (822), the permanent magnet (83), the second transmission member (84), the electrical conductor (85), and the lead member (86) are all disposed within the magnetic retention housing (87), the magnetic retention housing (87) is removably connected to the circuit breaker body, and the electrical conductor (85) and the lead member (86) extend from within the magnetic retention housing (87) and are respectively connected to the main line of the circuit breaker body.

6. The recloser circuit breaker according to any of claims 1-5 further comprising a handle (43), wherein the first disconnect point is openable and closable by the handle (43).

7. The auto-reclosing circuit breaker according to claim 6, wherein an operating mechanism (40) is disposed in the circuit breaker body, the first moving contact (401) is disposed on the operating mechanism (40), the operating mechanism (40) is in transmission connection with a first transmission member (41), the first transmission member (41) is rotatably disposed on the circuit breaker body, the first transmission member (41) is connected with the handle (43) through a connecting rod (42), teeth are disposed on an outer periphery of the first transmission member (41), a worm adapted to the teeth is disposed on an output shaft of the motor (50), the worm is in meshing transmission with the first transmission member (41), and the first transmission member (41) is adapted to control opening and closing of the first breaking point through the operating mechanism (40).

8. The recloser circuit breaker of claim 7 wherein the breaker body further comprises an inlet terminal (10), an outlet terminal (90), an arc quenching system (30), a thermal trip system (20), an electromagnetic system (70);

the incoming line end (10), the thermal trip system (20), the operating mechanism (40), the electromagnetic system (70) and the outgoing line end (90) are sequentially arranged.

9. The auto-reclosing circuit breaker according to claim 8, characterized in that the incoming line ends (10) include a first incoming line end (101) and a second incoming line end (102), the outgoing line end (90) includes a first outgoing line end (901) and a second outgoing line end (902), the first incoming line end (101) is in line connection with the first outgoing line end (901), the first breaking point and the second breaking point are arranged in the middle, and the second incoming line end (102) is in line connection with the second outgoing line end (902).

10. The recloser circuit breaker of claim 8 wherein the second discontinuity is disposed rearward of the first discontinuity in a direction from the first inlet terminal (101) to the first outlet terminal (901).

Images