A DC circuit breaker

Abstract

The present invention discloses a DC circuit breaker, which relates to the technical field of circuit breakers. The circuit breaker includes a main body and a connecting wire, wherein a wire socket is provided on the top of the main body for connecting with the connecting wire; a protective body and a detection assembly, wherein the protective body can protect the connection between the connecting wire and the wire socket; the protective body is further provided with a locking assembly, which can lock or unlock the connecting wire; the protective body is further provided with a lifting assembly, which can drive the connecting wire to rise and fall; the detection assembly 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 assembly drives the connecting wire to rise so as to separate the connecting wire from the wire socket; when the abnormal working state is released, the lifting assembly drives the connecting wire to descend and insert it into the wire socket. The present invention can automatically separate the wires when the circuit breaker is working abnormally, fully ensuring safety in use and facilitating wiring.

Description

Technical Field

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

[0002] A DC circuit breaker is a protective device used in DC circuits. It plays a vital role in DC systems and has unique arc extinguishing and breaking characteristics compared to AC circuit breakers.

[0003] An existing small DC circuit breaker generally includes a circuit breaker body, a wire socket is provided on the top of the circuit breaker body, and a protective assembly is installed on the top of the circuit breaker body. The protective assembly includes a first cover shell and a second cover shell, a first semicircular rubber sleeve is embedded in the top of the first cover shell, a second semicircular rubber sleeve is embedded in the top of the second cover shell, and a clamping strip is connected to the outer surface of the second cover shell on the side opposite to the first cover shell, and an embedding groove is provided at the connection between the clamping strip and the first cover shell. By arranging the first cover shell, the second cover shell, the first semicircular rubber sleeve, the second semicircular rubber sleeve, the clamping strip, the embedding groove and the limit strip on the top of the small DC circuit breaker, it is possible to effectively prevent dust from falling into the connection between the wire connector and the circuit breaker body, and effectively prevent dust from causing poor contact between the wire and the circuit breaker body.

[0004] The above-mentioned small DC circuit breaker cannot facilitate the connection of wires during use, and when an abnormal situation such as a short circuit occurs and the circuit breaker does not operate normally, the wires cannot be automatically separated, and the safety of use cannot be fully ensured.

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

[0006] The object 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 wires when the circuit breaker works abnormally, fully ensure the safety of use, and facilitate wiring.

[0007] To achieve the above object, the present invention provides the following solutions:

[0008] The present invention provides a DC circuit breaker, comprising a circuit breaker body and a connecting wire, wherein a wire socket is provided on the top of the circuit breaker body for connecting to the connecting wire; a protective body and a detection assembly, wherein the protective body is fixed to the top of the circuit breaker body and can protect the connection between the connecting wire and the wire socket; the protective body is further provided with a locking assembly, which can lock or unlock the connecting wire; the protective body is further provided with a lifting assembly, which can drive the connecting wire to rise and fall, so as to detach the connecting wire from the wire socket or insert the connecting wire into the wire socket;

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

[0010] Preferably, the protective body includes a first protective frame and a second protective frame, the first protective frame and the second protective frame are arranged opposite to each other, and a sealing fixing plate is fixed on the top of the first protective frame and the second protective frame, and the first protective frame, the second protective frame and the sealing fixing plate enclose to form a protective cavity.

[0011] Preferably, a limiting tube is further provided on the top of the protective body, and the limiting tube is used for allowing the connecting wire to pass through so as to limit and guide the connecting wire.

[0012] Preferably, the locking assembly includes a first locking mechanism, which includes two first fixed clamps arranged opposite to each other, and the two first fixed clamps jointly clamp the bottom of the connecting wire, and the two first fixed clamps are also connected to a first linear drive mechanism on the side away from the connecting wire. The two first linear drive mechanisms are respectively fixed on the first protective frame and the second protective frame, and can drive the corresponding first fixed clamps to move back and forth along the radial direction of the connecting wire to achieve locking and unlocking of the bottom of the connecting wire.

[0013] Preferably, the locking assembly also includes a second locking mechanism, which includes two second fixed clamps arranged opposite to each other, and the two second fixed clamps jointly clamp the connecting wire, and the two second fixed clamps are also connected to a second linear drive mechanism on the side away from the connecting wire. The two second linear drive 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 clamps to move back and forth along the radial direction of the connecting wire to achieve locking and unlocking of the connecting wire.

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

[0015] Preferably, a locking mechanism is also provided on the protective body, and the locking mechanism is used to lock the connecting wire; wherein, the locking mechanism includes two extrusion ends arranged opposite to each other, and the two extrusion ends jointly lock the connecting wire, and a threaded adjustment column is connected to the side of the two extrusion ends away from the connecting wire, and 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 move back and forth along the radial direction of the connecting wire to achieve locking and unlocking of the connecting wire.

[0016] Preferably, 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 mounted on the circuit breaker body;

[0017] The detection component further includes a temperature probe, which is fixedly mounted 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 guide tube is fixedly provided at the wire socket of the circuit breaker body for guiding the connecting wire.

[0020] Compared with the prior art, the present invention has achieved the following technical effects:

[0021] The present invention provides a protective body on the top of the circuit breaker body, which can protect the connection between the connecting wire and the wire socket and play a role in dust and moisture prevention; the protective body is also provided with a locking assembly, which can lock or unlock the connecting wire, thereby facilitating the separation and insertion of the connecting wire; in addition, a detection assembly and a lifting assembly are also provided, and the detection assembly is used to detect the working state of the circuit breaker body. When it is detected that the working state of the circuit breaker body is abnormal, the lifting assembly drives the connecting wire to rise, so that the connecting wire is separated from the wire socket, thereby achieving circuit breaking and ensuring safety in use; when it is detected that the abnormal working state of the circuit breaker body is resolved, the lifting assembly drives the connecting wire to descend, so that the connecting wire is inserted into the wire socket, so that wiring is convenient during the use of the circuit breaker body and the use process is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 Schematic diagram of the structure of a DC circuit breaker in an embodiment of the present invention;

[0024] Figure 2 Schematic diagram of the top structure of the circuit breaker body in an embodiment of the present invention;

[0025] Figure 3 This is a schematic structural diagram of a protective body according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the disassembled structure of the protection body in an embodiment of the present invention;

[0027] Figure 5 Schematic diagram of the internal structure of the protective body in an embodiment of the present invention.

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

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] The object 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 wires when the circuit breaker works abnormally, fully ensure the safety of use, and facilitate wiring.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Example 1

[0033] like Figure 1-Figure 5 As shown, this embodiment provides a DC circuit breaker, which mainly includes a circuit breaker body 3 and a connecting wire 7. The top of the circuit breaker body 3 is provided with a wire socket for connecting with the connecting wire 7; it also includes a protective body 6, which is fixed to the top of the circuit breaker body 3 and can protect the connection between the connecting wire 7 and the wire socket; further, the protective body 6 is further provided with a locking assembly, which can lock or unlock the connecting wire 7; the protective body 6 is also provided with a lifting assembly, which can drive the The connecting wire 7 is raised and lowered to disengage the connecting wire 7 from the wire socket or to insert the connecting wire 7 into the wire socket. The device also includes a detection component, which is used to detect the working state of the circuit breaker body 3. When it is detected that the working state of the circuit breaker body 3 is abnormal, the lifting component drives the connecting wire 7 to rise to disengage the connecting wire 7 from the wire socket, thereby disconnecting the circuit and ensuring safety in use. When it is detected that the abnormal working state of the circuit breaker body 3 is resolved, the lifting component drives the connecting wire 7 to descend to insert the connecting wire 7 into the wire socket.

[0034] In this embodiment, a protective 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 and play a role in dust and moisture prevention; a locking assembly is also provided on the protective body 6, which can lock or unlock the connecting wire 7, thereby facilitating the separation and insertion of the connecting wire 7; in addition, a detection assembly and a lifting assembly are also provided, wherein the detection assembly is used to detect the working state of the circuit breaker body 3. When it is detected that the working state of the circuit breaker body 3 is abnormal, the lifting assembly drives the connecting wire 7 to rise, so that the connecting wire 7 is separated from the wire socket, thereby achieving circuit breaking and ensuring safe use; when it is detected that the abnormal working state of the circuit breaker body 3 is resolved, the lifting assembly drives the connecting wire 7 to descend, so that the connecting wire 7 is inserted into the wire socket, so that wiring is convenient during the use of the circuit breaker body 3 and the use process is safer.

[0035] In this embodiment, the protective body 6 primarily comprises a first protective frame 10 and a second protective frame 12. The first and second protective frames 10, 12 are positioned opposite each other, and a sealing plate 9 is fixed to the top of each of the first and second protective frames 10, 12 via bolts. The first, second, and sealing plates 9 together form a protective cavity, which surrounds and protects the connection between the connecting wire 7 and the wire jack. Both the first and second protective frames 10, 12 are secured to the top of the circuit breaker body 3 via fixing bolts 13, facilitating disassembly and installation.

[0036] Furthermore, a limiting tube 11 is provided on the top of the protective body 6, and the limiting tube 11 is used for the connecting wire 7 to pass through so as to limit and guide the connecting wire 7; wherein, the limiting tube 11 includes two semicircular tubes arranged opposite to each other, and the two semicircular tubes are respectively arranged on the sealing fixing plate 9 at the top of the first protective frame 10 and the second protective frame 12, and the two semicircular tubes can be buckled together to form a circular tube.

[0037] In this embodiment, the locking assembly includes a first locking mechanism, which includes two first fixed clamps 21 arranged opposite to each other. The two first fixed clamps 21 jointly clamp the bottom of the connecting wire 7, and the two first fixed clamps 21 are also connected to a first linear drive mechanism 14 on the side away from the connecting wire 7. The two first linear drive mechanisms 14 are respectively fixed on the first protective frame 10 and the second protective frame 12, and can drive the corresponding first fixed clamps 21 to move back and forth along the radial direction of the connecting wire 7 to achieve locking and unlocking of the bottom of the connecting wire 7.

[0038] In this embodiment, the locking assembly also includes a second locking mechanism, which includes two second fixed clamps 20 arranged opposite to each other, and the two second fixed clamps 20 jointly clamp the connecting wire 7, and the two second fixed clamps 20 are also connected to a second linear drive mechanism 19 on the side away from the connecting wire 7. The two second linear drive mechanisms 19 are respectively connected to the top of the first protective frame 10 and the top of the second protective frame 12, and can drive the corresponding second fixed clamps 20 to move back and forth along the radial direction of the connecting wire 7 to achieve locking and unlocking of the connecting wire 7.

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

[0040] In this embodiment, two groups of the first locking mechanism and the second locking mechanism are provided, respectively locking the two connecting wires 7; wherein the two groups of the second locking mechanisms are connected by a fixed support frame 18, and the bottom of the lifting drive mechanism 16 is fixed to the circuit breaker body 3, and the top is connected to the fixed support frame 18, thereby being able to drive the two groups of the second locking mechanisms and the connecting wires 7 to rise and fall.

[0041] In this embodiment, the first linear drive mechanism 14, the second linear drive mechanism 19 and the lifting drive mechanism 16 can be selected according to specific work needs, preferably electric push rods, or cylinders or linear motors can be selected as needed.

[0042] In this embodiment, a locking mechanism is further provided on the protective body 6, and the locking mechanism is used to lock the connecting wire 7 when the connecting wire 7 is not required to be automatically disconnected from the circuit breaker body 3 during use; wherein, the locking mechanism includes two extrusion ends 22 arranged opposite to each other, and the two extrusion ends 22 jointly lock the connecting wire 7, and a threaded adjustment column 17 is connected to the side of the two extrusion ends 22 away from the connecting wire 7. The two threaded adjustment columns 17 are respectively threadedly connected to the first protective frame 10 and the second protective frame 12. By rotating the threaded adjustment column 17, the corresponding extrusion end 22 can be driven to move back and forth along the radial direction of the connecting wire 7 to achieve locking and unlocking of the connecting wire 7.

[0043] Furthermore, a screwing end 15 is provided at one end of the thread adjustment column 17 away from the extrusion end 22 to facilitate the rotation of the thread adjustment column 17 .

[0044] In this embodiment, the detection component mainly includes a Hall current sensor 2 and a Hall voltage sensor 5, which are fixedly mounted on the circuit breaker body 3. Furthermore, the detection component also includes a temperature probe 4, of which multiple temperature probes 4 can be provided. Multiple temperature probes 4 are evenly fixedly mounted on the circuit breaker body 3 to detect 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 achieving fixed installation of the circuit breaker body 3 .

[0046] In this embodiment, a connecting conduit is further fixedly provided at the wire socket of the circuit breaker body 3 by bolts, for guiding the insertion of the connecting wire 7; wherein the connecting conduit is preferably a tapered connecting conduit 8 with a large upper opening and a small lower opening. Through the tapered connecting conduit 8, the bottom end of the connecting wire 7 can be inserted into the interior of the tapered connecting conduit 8 and then guided to be accurately inserted into the interior of the wire socket provided at the top of the circuit breaker body 3, so that the connection between the connecting wire 7 and the circuit breaker body 3 is more accurate, convenient and fast.

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

[0048] During use, after the connecting wire 7 is inserted into the wire socket at the top of the circuit breaker body 3, the protective body 6 is fixed on 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, and play a role in dust and moisture prevention. By starting the first linear drive mechanism 14, the symmetrically distributed first fixed clamp 21 can synchronously squeeze the bottom of the connecting wire 7 to achieve locking, so that the bottom end of the connecting wire 7 is inserted into the wire socket set at the top of the circuit breaker body 3 and is fixed and locked. The symmetrically arranged second linear drive mechanism 19 can drive the symmetrically distributed second fixed clamp 20 to move, and the symmetrically distributed second fixed clamp 20 can lock and fix the upper part of the connecting wire 7 again, so that the connecting wire 7 can be doubly fixed, so that the connecting wire 7 that is quickly plugged into the circuit breaker body 3 is fully connected and firmly fixed, and the internal abnormality of the circuit breaker body 3 is detected by the Hall current sensor 2 and the Hall voltage sensor 5, and the temperature probe 4 detects the circuit breaker body. When the internal temperature of the circuit breaker 3 continues to rise, the first linear drive mechanism 14 drives the first fixed card plate 21 to move and cancel the squeezing 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 fixed card 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, so that when the circuit breaker body 3 is abnormal and not in operation, the circuit is automatically disconnected, which fully ensures the safety of use; after the abnormality is eliminated, the lifting drive mechanism 16 drives 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 fixed card plate 21 is reset to lock the connecting wire 7 after the reset connection; when the connecting wire 7 is not required to be automatically disconnected from the circuit breaker body 3 during use, the threaded adjustment column 17 is moved by screwing the screwing end 15, and the connecting wire 7 is locked by the squeezing end 22.

[0049] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A DC circuit breaker, characterized in that: The circuit breaker comprises a main body and a connecting wire, wherein a wire socket is provided on the top of the main body for connecting with the connecting wire; a protective body and a detection assembly are further provided, wherein the protective body is fixed on the top of the main body and can protect the connection between the connecting wire and the wire socket; the protective body is further provided with a locking assembly, which can lock or unlock the connecting wire; the protective body is further provided with a lifting assembly, which can drive the connecting wire to rise and fall, so as to detach the connecting wire from the wire socket or insert the connecting wire into the wire socket; The detection component is used to detect the working state of the circuit breaker body. When it is detected that the working state of the circuit breaker body is abnormal, the lifting component drives the connecting wire to rise so that the connecting wire is separated from the wire socket; When it is detected that the abnormal working state of the circuit breaker body is released, the lifting assembly 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, characterized in that: The protective body includes a first protective frame and a second protective frame. The first protective frame and the second protective frame are arranged opposite to each other, and a sealing fixing plate is fixed on the top of the first protective frame and the second protective frame. The first protective frame, the second protective frame and the sealing fixing plate enclose a protective cavity.

3. The DC circuit breaker according to claim 2, characterized in that: A limiting tube is further provided on the top of the protective body, and the limiting tube is used for allowing the connecting wire to pass through so as to limit and guide the connecting wire.

4. The DC circuit breaker according to claim 2, wherein: The locking assembly includes a first locking mechanism, which includes two first fixed clamps arranged opposite to each other, and the two first fixed clamps jointly clamp the bottom of the connecting wire, and the two first fixed clamps are also connected to a first linear drive mechanism on the side away from the connecting wire. The two first linear drive mechanisms are respectively fixed to the first protective frame and the second protective frame, and can drive the corresponding first fixed clamps to move back and forth along the radial direction of the connecting wire to achieve locking and unlocking of the bottom of the connecting wire.

5. The DC circuit breaker according to claim 2, characterized in that: The locking assembly also includes a second locking mechanism, which includes two second fixed clamps arranged opposite to each other, and the two second fixed clamps jointly clamp the connecting wire, and the two second fixed clamps are also connected to a second linear drive mechanism on the side away from the connecting wire. The two second linear drive 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 clamps to move back and forth along the radial direction of the connecting wire to achieve locking and unlocking of the connecting wire.

6. The DC circuit breaker according to claim 5, characterized in that: The lifting assembly includes a lifting drive mechanism, which is fixed to the top of the circuit breaker body and connected to the second linear drive mechanism, and can drive the second linear drive mechanism and the connecting wire to move up and down.

7. The DC circuit breaker according to claim 2, characterized in that: The protective body is also provided with a locking mechanism, which is used to lock the connecting wire; wherein, the locking mechanism includes two extrusion ends arranged opposite to each other, and the two extrusion ends jointly lock the connecting wire, and a threaded adjustment column is connected to the side of the two extrusion ends away from the connecting wire, and the two threaded adjustment columns are respectively threadedly connected to the first protective frame and the second protective frame. By rotating the threaded adjustment column, the corresponding extrusion end can be driven to move back and forth along the radial direction of 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 mounted on the circuit breaker body; The detection component further includes a temperature probe, which is fixedly mounted on the circuit breaker body.

9. The DC circuit breaker according to claim 1, characterized in that: Both sides of the back of the circuit breaker body are provided with fixed mounting plates.

10. The DC circuit breaker according to claim 1, characterized in that: A connecting guide tube is also fixedly provided at the wire socket of the circuit breaker body for guiding the connecting wire.

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