Direct-current circuit breaker

Abstract

The invention discloses a direct-current circuit breaker, and relates to the technical field of circuit breakers, the direct-current circuit breaker comprises a circuit breaker main body and a connecting wire, and the top of the circuit breaker main body is provided with a wire socket used for being connected with the connecting wire; the device further comprises a protection main body and a detection assembly. The protection main body can protect the joint of the connecting wire and the wire socket. The protection main body is also provided with a locking assembly, and the locking assembly can lock or unlock the connecting wire. A lifting assembly is further arranged on the protection body and can drive the connecting wire to ascend and descend. The detection assembly is used for detecting the working state of the circuit breaker main body, and when it is detected that the working state of the circuit breaker main body is abnormal, the lifting assembly drives the connecting wire to ascend, so that the connecting wire is separated from the wire socket; when the abnormal working state is relieved, the lifting assembly drives the connecting wire to descend and be inserted into the wire socket. When the circuit breaker works abnormally, the wire can be automatically separated, the use safety is fully ensured, and wiring is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and particularly to a DC circuit breaker. Background Art

[0002] A DC circuit breaker is a protective electrical appliance used in DC circuits and plays a crucial role in DC systems. Compared with AC circuit breakers, it has unique arc extinguishing and opening characteristics.

[0003] Existing small DC circuit breakers generally include a circuit breaker body. A wire insertion port is provided at the top of the circuit breaker body, and a protective component is installed on the top of the circuit breaker body. The protective component includes a first cover and a second cover. A first semi-circular rubber sleeve is embedded at the top of the first cover, and a second semi-circular rubber sleeve is embedded at the top of the second cover. A clamping bar is connected to the outer surface of the second cover facing the first cover, and an embedding groove is provided at the connection between the clamping bar and the first cover. By providing the first cover, the second cover, the first semi-circular rubber sleeve, the second semi-circular rubber sleeve, the clamping bar, the embedding groove, and the limiting bar at the top of the small DC circuit breaker, it can effectively prevent foreign objects from falling into the connection between the wire joint and the circuit breaker body, and can effectively avoid poor contact between the wire and the circuit breaker body caused by dust.

[0004] During the use of the above-mentioned small DC circuit breaker, the wire cannot be conveniently connected. And when abnormal situations such as short circuits occur and the circuit breaker does not operate normally, the wire cannot be automatically separated, which cannot fully ensure the safety of use.

[0005] Therefore, a DC circuit breaker is provided to solve the above problems existing in the prior art. Summary of the Invention

[0006] The purpose of the present invention is to provide a DC circuit breaker to solve the above problems existing in the prior art, which can automatically separate the wire when the circuit breaker works abnormally, fully ensure the safety of use, and is convenient for wiring.

[0007] To achieve the above purpose, the present invention provides the following solution:

[0008] The present invention provides a DC circuit breaker, which includes a circuit breaker main body and a connecting wire. A wire socket is provided at the top of the circuit breaker main body for connecting with the connecting wire. The circuit breaker also includes a protection main body and a detection component. The protection main body is fixed on the top of the circuit breaker main body and can protect the connection part between the connecting wire and the wire socket. A locking component is also provided on the protection main body, and the locking component can lock or unlock the connecting wire. A lifting component is further provided on the protection main body, and the lifting component can drive the connecting wire to move up and down, so that the connecting wire is separated from or inserted into the wire socket.

[0009] The detection component is used to detect the working state of the circuit breaker main body. When the working state of the circuit breaker main body is detected to be abnormal, the lifting component drives the connecting wire to rise, so that the connecting wire is separated from the wire socket. When the abnormal working state of the circuit breaker main body is detected to be lifted, the lifting component drives the connecting wire to descend, so that the connecting wire is inserted into the wire socket.

[0010] Preferably, the protection main body includes a first protection frame and a second protection frame. The first protection frame and the second protection frame are arranged opposite to each other, and sealing fixing plates are fixed on the tops of the first protection frame and the second protection frame. The first protection frame, the second protection frame and the sealing fixing plates enclose a protection cavity.

[0011] Preferably, a limiting tube is further provided on the top of the protection main body. The limiting tube is used for the connecting wire to pass through to limit and guide the connecting wire.

[0012] Preferably, the locking component includes a first locking mechanism. The first locking mechanism includes two relatively arranged first fixed clamping plates. The two first fixed clamping plates jointly clamp the bottom of the connecting wire, and a first linear driving mechanism is connected to the side of each of the two first fixed clamping plates away from the connecting wire. The two first linear driving mechanisms are respectively fixed on the first protection frame and the second protection frame and can drive the corresponding first fixed clamping plates to reciprocate along the radial direction of the connecting wire to realize locking and unlocking of the bottom of the connecting wire.

[0013] Preferably, the locking assembly further includes a second locking mechanism, which includes two relatively arranged second fixed clamping plates. The two second fixed clamping plates jointly clamp the connecting wire, and a second linear driving mechanism is connected to each side of the two second fixed clamping plates away from the connecting wire. The two second linear driving mechanisms are respectively connected to the top of the first protective frame and the top of the second protective frame, and can drive the corresponding second fixed clamping plate to reciprocate along the radial direction of the connecting wire to lock and unlock the connecting wire.

[0014] Preferably, the lifting assembly includes a lifting driving mechanism, which is fixed to the top of the circuit breaker body, and the lifting driving mechanism is connected to the second linear driving mechanism and can drive the second linear driving mechanism and the connecting wire to lift.

[0015] Preferably, a locking mechanism is further provided on the protective body, and the locking mechanism is used to lock the connecting wire; wherein, the locking mechanism includes two relatively arranged extrusion ends, the two extrusion ends jointly lock the connecting wire, and a threaded adjustment column is connected to each side of the two extrusion ends away from the connecting wire. The two threaded adjustment columns are respectively threadedly connected to the first protective frame and the second protective frame, and by rotating the threaded adjustment column, the corresponding extrusion end can be driven to reciprocate along the radial direction of the connecting wire to lock and unlock the connecting wire.

[0016] Preferably, the detection assembly includes a Hall current sensor and a Hall voltage sensor, and the Hall current sensor and the Hall voltage sensor are fixedly installed on the circuit breaker body;

[0017] The detection assembly further includes a temperature probe, and the temperature probe is fixedly installed on the circuit breaker body.

[0018] Preferably, fixed mounting plates are provided on both sides of the back of the circuit breaker body.

[0019] Preferably, a connecting conduit is fixedly provided at the wire socket of the circuit breaker body for guiding the connecting wire.

[0020] The present invention has achieved the following technical effects compared with the prior art:

[0021] The present invention provides a protective body at the top of the circuit breaker main body, which can protect the connection part between the connecting wire and the wire socket, playing a role in dust prevention and moisture protection; a locking component is also provided on the protective body, which can lock or unlock the connecting wire, facilitating the separation and insertion of the connecting wire; moreover, a detection component and a lifting component are also provided. The detection component is used to detect the working state of the circuit breaker main body. When the working state of the circuit breaker main body is detected to be abnormal, the lifting component drives the connecting wire to rise, so that the connecting wire is separated from the wire socket, realizing a circuit break and ensuring the safety of use; when the abnormal working state of the circuit breaker main body is detected to be lifted, the lifting component drives the connecting wire to descend, inserting the connecting wire into the wire socket, making the wiring convenient during the use of the circuit breaker main body and the use process safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 Structural schematic diagram of the DC circuit breaker in the embodiment of the present invention;

[0024] Figure 2 Top structure schematic diagram of the circuit breaker main body in the embodiment of the present invention;

[0025] Figure 3 Structural schematic diagram of the protective body in the embodiment of the present invention;

[0026] Figure 4 Split structure schematic diagram of the protective body in the embodiment of the present invention;

[0027] Figure 5 Internal structure schematic diagram of the protective body in the embodiment of the present invention.

[0028] In the figure: 1 - fixed mounting plate; 2 - Hall current sensor; 3 - circuit breaker main body; 4 - temperature probe; 5 - Hall voltage sensor; 6 - protective body; 7 - connecting wire; 8 - tapered connecting conduit; 9 - sealing fixing plate; 10 - first protective frame; 11 - limiting tube; 12 - second protective frame; 13 - fixing bolt; 14 - first linear driving mechanism; 15 - screwing end; 16 - lifting driving mechanism; 17 - threaded adjustment column; 18 - fixed support frame; 19 - second linear driving mechanism; 20 - second fixed clamping plate; 21 - first fixed clamping plate; 22 - extrusion end. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] The purpose of the present invention is to provide a DC circuit breaker to solve the problems existing in the above-mentioned prior art, which can automatically separate the wire when the circuit breaker works abnormally, fully ensure the safety of use, and is convenient for wiring.

[0031] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Embodiment 1

[0033] As Figures 1 - 5 shown, a DC circuit breaker is provided in this embodiment, mainly including a circuit breaker main body 3 and a connecting wire 7. A wire socket is provided at the top of the circuit breaker main body 3 for connecting with the connecting wire 7; a protection main body 6 is further included, and the protection main body 6 is fixed on the top of the circuit breaker main body 3 and can protect the connection part between the connecting wire 7 and the wire socket; further, a locking component is provided on the protection main body 6, and the locking component can lock or unlock the connecting wire 7; a lifting component is also provided on the protection main body 6, and the lifting component can drive the connecting wire 7 to rise and fall, so that the connecting wire 7 is separated from the wire socket or the connecting wire 7 is inserted into the wire socket; a detection component is further included, and the detection component is used to detect the working state of the circuit breaker main body 3. When it is detected that the working state of the circuit breaker main body 3 is abnormal, the lifting component drives the connecting wire 7 to rise, so that the connecting wire 7 is separated from the wire socket to achieve an open circuit and ensure the safety of use; when it is detected that the abnormal working state of the circuit breaker main body 3 is lifted, the lifting component drives the connecting wire 7 to descend, so that the connecting wire 7 is inserted into the wire socket.

[0034] In this embodiment, a protection body 6 is provided on the top of the circuit breaker body 3, which can protect the connection between the connecting wire 7 and the wire socket, playing a role in dust prevention and moisture protection; a locking component is also provided on the protection body 6, which can lock or unlock the connecting wire 7, facilitating the separation and insertion of the connecting wire 7; moreover, a detection component and a lifting component are also provided. The detection component is used to detect the working state of the circuit breaker body 3. When the working state of the circuit breaker body 3 is detected to be abnormal, the lifting component drives the connecting wire 7 to rise, so that the connecting wire 7 is separated from the wire socket, realizing a circuit break and ensuring the safety of use; when the abnormal working state of the circuit breaker body 3 is detected to be lifted, the lifting component drives the connecting wire 7 to descend, so that the connecting wire 7 is inserted into the wire socket, making the wiring convenient during the use of the circuit breaker body 3 and the use process safer.

[0035] In this embodiment, the protection body 6 mainly includes a first protection frame 10 and a second protection frame 12. The first protection frame 10 and the second protection frame 12 are arranged oppositely, and sealing fixing plates 9 are fixed on the tops of the first protection frame 10 and the second protection frame 12 by bolts. The first protection frame 10, the second protection frame 12 and the sealing fixing plate 9 enclose a protection cavity, and the protection cavity is arranged around the connection between the connecting wire 7 and the wire socket to protect it. Among them, the first protection frame 10 and the second protection frame 12 are both fixed on the top of the circuit breaker body 3 by fixing bolts 13, which is convenient for disassembly and installation.

[0036] Further, a limiting tube 11 is also provided on the top of the protection body 6, which is used for the connecting wire 7 to pass through to limit and guide the connecting wire 7; among them, the limiting tube 11 includes two semi-circular tubes arranged oppositely, and the two semi-circular tubes are respectively arranged on the sealing fixing plates 9 on the tops of the first protection frame 10 and the second protection frame 12, and the two semi-circular tubes can be buckled to form a circular tube.

[0037] In this embodiment, the locking component includes a first locking mechanism. The first locking mechanism includes two first fixed clamping plates 21 arranged oppositely. The two first fixed clamping plates 21 jointly clamp the bottom of the connecting wire 7, and a first linear driving mechanism 14 is connected to the side of each of the two first fixed clamping plates 21 away from the connecting wire 7. The two first linear driving mechanisms 14 are respectively fixed on the first protection frame 10 and the second protection frame 12, and can drive the corresponding first fixed clamping plate 21 to reciprocate along the radial direction of the connecting wire 7 to realize the locking and unlocking of the bottom of the connecting wire 7.

[0038] In this embodiment, the locking assembly further includes a second locking mechanism, which includes two relatively arranged second fixing plates 20. The two second fixing plates 20 jointly clamp the connecting wire 7, and a second linear driving mechanism 19 is connected to each side of the two second fixing plates 20 away from the connecting wire 7. The two second linear driving mechanisms 19 are respectively connected to the top of the first protection frame 10 and the top of the second protection frame 12, and can drive the corresponding second fixing plates 20 to reciprocate along the radial direction of the connecting wire 7 to lock and unlock the connecting wire 7.

[0039] In this embodiment, the lifting assembly mainly includes a lifting driving mechanism 16. The lifting driving mechanism 16 is fixed to the top of the circuit breaker body 3 by bolts, and the lifting driving mechanism 16 is connected to the second linear driving mechanism 19 and can drive the second linear driving mechanism 19 to lift, thereby driving the connecting wire 7 to lift.

[0040] In this embodiment, two sets of the first locking mechanism and the second locking mechanism are provided to lock the two connecting wires 7 respectively. Among them, the two sets of the second locking mechanisms are connected by a fixed support frame 18. The bottom of the lifting driving mechanism 16 is fixed to the circuit breaker body 3, and the top is connected to the fixed support frame 18, so as to drive the two sets of the second locking mechanisms and the connecting wire 7 to lift.

[0041] In this embodiment, the first linear driving mechanism 14, the second linear driving mechanism 19 and the lifting driving mechanism 16 can be selected according to specific working requirements. Preferably, they are electric push rods. Alternatively, air cylinders or linear motors can also be selected according to needs.

[0042] In this embodiment, a locking mechanism is further provided on the protection main body 6. The locking mechanism is used to lock the connecting wire 7 when it is not required for the connecting wire 7 to be automatically disconnected from the circuit breaker body 3 during use. Among them, the locking mechanism includes two relatively arranged pressing ends 22. The two pressing ends 22 jointly clamp the connecting wire 7, and a threaded adjustment column 17 is connected to each side of the two pressing ends 22 away from the connecting wire 7. The two threaded adjustment columns 17 are respectively threadedly connected to the first protection frame 10 and the second protection frame 12. By rotating the threaded adjustment column 17, the corresponding pressing end 22 can be driven to reciprocate along the radial direction of the connecting wire 7 to lock and unlock the connecting wire 7.

[0043] Further, a screwing end 15 is also provided at one end of the threaded adjustment column 17 away from the extrusion end 22, facilitating the rotation of the threaded adjustment column 17.

[0044] In this embodiment, the detection assembly mainly includes a Hall current sensor 2 and a Hall voltage sensor 5. The Hall current sensor 2 and the Hall voltage sensor 5 are fixedly installed on the circuit breaker body 3. Further, the detection assembly further includes a temperature probe 4. A plurality of temperature probes 4 can be provided, and the plurality of temperature probes 4 are uniformly and fixedly installed on the circuit breaker body 3 for detecting the internal temperature of the circuit breaker body 3.

[0045] In this embodiment, fixed mounting plates 1 are provided on both sides of the back of the circuit breaker body 3 for realizing the fixed mounting of the circuit breaker body 3.

[0046] In this embodiment, a connecting conduit is also fixedly provided at the wire socket of the circuit breaker body 3 through bolts for guiding the insertion of the connecting wire 7. Among them, the connecting conduit is preferably a tapered connecting conduit 8 with a large upper opening and a small lower opening. After the bottom end of the connecting wire 7 is inserted into the interior of the tapered connecting conduit 8, the tapered connecting conduit 8 can guide it to be accurately inserted into the interior of the wire socket provided at the top of the circuit breaker body 3, making the connection between the connecting wire 7 and the circuit breaker body 3 more accurate, convenient, and fast.

[0047] The working principle of the DC circuit breaker in this embodiment is as follows:

[0048] During use, after inserting the connecting wire 7 into the wire socket at the top of the circuit breaker body 3, the protective body 6 is fixed to the top of the circuit breaker body 3 for use. The protective body 6 can protect the connection position between the top of the circuit breaker body 3 and the connecting wire 7, playing a role in dust prevention and moisture protection. And by activating the first linear drive mechanism 14, the symmetrically distributed first fixing plates 21 can synchronously squeeze the bottom of the connecting wire 7 to achieve locking, so that after the bottom end of the connecting wire 7 is inserted into the wire socket provided at the top of the circuit breaker body 3, it is fixed and locked. The symmetrically arranged second linear drive mechanism 19 can drive the symmetrically distributed second fixing plates 20 to move, and the connecting wire 7 is locked and fixed again by the symmetrically distributed second fixing plates 20, so that the connecting wire 7 can be doubly fixed, ensuring that the connecting wire 7 that is quickly plugged into the circuit breaker body 3 is fully and firmly connected. And when the Hall current sensor 2 and the Hall voltage sensor 5 detect an abnormality inside the circuit breaker body 3, and the temperature probe 4 detects that the internal temperature of the circuit breaker body 3 continues to rise, at this time, the first linear drive mechanism 14 operates to drive the first fixing plate 21 to move to cancel the squeezing and locking force on the connecting wire 7, and then the lifting drive mechanism 16 drives the fixed support frame 18 to rise. At this time, the raised fixed support can drive the second fixing plate 20 and the clamped connecting wire 7 to rise through the second linear drive mechanism 19, so that the bottom end of the connecting wire 7 is automatically separated from the wire socket at the top of the circuit breaker body 3, realizing automatic circuit break when the circuit breaker body 3 has an abnormality and does not operate, fully ensuring the safety of use; after the abnormality is eliminated, the lifting drive mechanism 16 operates to drive the second linear drive mechanism 19 to move downward, so that the bottom end of the connecting wire 7 is accurately inserted into the wire socket at the top of the circuit breaker body 3 again, and the first fixing plate 21 is reset to lock and fix the reconnected connecting wire 7; when it is not necessary for the connecting wire 7 to be automatically disconnected from the circuit breaker body 3 during use, by screwing the screwing end 15, the threaded adjustment column 17 moves, and the connecting wire 7 can be locked by using the extrusion end 22.

[0049] In the present invention, specific examples are used to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A DC circuit breaker, characterized in that: It includes a circuit breaker body and a connecting wire. A wire socket is provided at the top of the circuit breaker body for connecting with the connecting wire. It also includes a protection body and a detection component. The protection body is fixed on the top of the circuit breaker body and can protect the connection part between the connecting wire and the wire socket. A locking component is also provided on the protection body, which can lock or unlock the connecting wire. A lifting component is also provided on the protection body, which can drive the connecting wire to lift, so that the connecting wire is separated from the wire socket or the connecting wire is inserted into the wire socket. The detection component is used to detect the working state of the circuit breaker body. When the working state of the circuit breaker body is detected to be abnormal, the lifting component drives the connecting wire to rise, so that the connecting wire is separated from the wire socket. When the abnormal working state of the circuit breaker body is detected to be lifted, the lifting component drives the connecting wire to descend, so that the connecting wire is inserted into the wire socket.

2. The DC circuit breaker according to claim 1, wherein: The protection body includes a first protection frame and a second protection frame. The first protection frame and the second protection frame are arranged oppositely, and sealing fixing plates are fixed on the tops of the first protection frame and the second protection frame. The first protection frame, the second protection frame and the sealing fixing plate enclose a protection cavity.

3. The DC circuit breaker according to claim 2, wherein: A limiting tube is also provided on the top of the protection body, which is used for the connecting wire to pass through to limit and guide the connecting wire.

4. The DC circuit breaker according to claim 2, characterized in that: The locking component includes a first locking mechanism. The first locking mechanism includes two relatively arranged first fixed clamping plates. The two first fixed clamping plates jointly clamp the bottom of the connecting wire, and a first linear driving mechanism is connected to the side of each of the two first fixed clamping plates away from the connecting wire. The two first linear driving mechanisms are respectively fixed on the first protection frame and the second protection frame, and can drive the corresponding first fixed clamping plate to move reciprocally along the radial direction of the connecting wire to realize the locking and unlocking of the bottom of the connecting wire.

5. The DC circuit breaker according to claim 2, characterized in that: The locking component also includes a second locking mechanism. The second locking mechanism includes two relatively arranged second fixed clamping plates. The two second fixed clamping plates jointly clamp the connecting wire, and a second linear driving mechanism is connected to the side of each of the two second fixed clamping plates away from the connecting wire. The two second linear driving mechanisms are respectively connected to the tops of the first protection frame and the second protection frame, and can drive the corresponding second fixed clamping plate to move reciprocally along the radial direction of the connecting wire to realize the locking and unlocking of the connecting wire.

6. The DC circuit breaker according to claim 5, characterized in that: The lifting component includes a lifting driving mechanism. The lifting driving mechanism is fixed on the top of the circuit breaker body, and the lifting driving mechanism is connected to the second linear driving mechanism and can drive the second linear driving mechanism and the connecting wire to lift.

7. The DC circuit breaker according to claim 2, wherein: A locking mechanism is further provided on the protection body, and the locking mechanism is used to lock the connecting wire; wherein, the locking mechanism includes two opposing extrusion ends, and the two extrusion ends jointly lock the connecting wire, and a threaded adjustment column is connected to one side of each of the two extrusion ends away from the connecting wire. The two threaded adjustment columns are respectively threadedly connected to the first protection frame and the second protection frame. By rotating the threaded adjustment column, the corresponding extrusion end can be driven to reciprocate radially along the connecting wire to achieve locking and unlocking of the connecting wire.

8. The DC circuit breaker according to claim 1, characterized in that: The detection component includes a Hall current sensor and a Hall voltage sensor, and the Hall current sensor and the Hall voltage sensor are fixedly installed on the circuit breaker body; The detection component further includes a temperature probe, and the temperature probe is fixedly installed on the circuit breaker body.

9. The DC circuit breaker according to claim 1, wherein: Fixed mounting plates are provided on both sides of the back of the circuit breaker body.

10. The DC circuit breaker according to claim 1, wherein: A connecting conduit is also fixedly provided at the wire socket of the circuit breaker body for guiding the connecting wire.

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