CN211654734U

CN211654734U - Reclosing circuit breaker

Info

Publication number: CN211654734U
Application number: CN202020669984.3U
Authority: CN
Inventors: 彭浩明; 冯晓金
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2020-10-09
Anticipated expiration: 2030-04-28

Abstract

The utility model discloses a reclosing circuit breaker, include: the cable breaker comprises a cable inlet end (1), a cable outlet end (2) and a switch-off and switch-on mechanism (3), wherein the cable inlet end (1) and the cable outlet end (2) are respectively in circuit connection with the switch-off and switch-on mechanism (3), and the length of the cable inlet end (1) is larger than that of the cable outlet end (2). By lengthening the length of the wire inlet end, the available space of the wire inlet end is improved, the space of the wire inlet end is reasonably utilized, and the purpose of effectively reducing the volume of the whole breaker is achieved.

Description

Reclosing circuit breaker

Technical Field

The utility model relates to a circuit breaker technical field, in particular to reclosing lock circuit breaker.

Background

The circuit breaker is an important component of the electrical appliance industry and has been widely applied, and when an electrical circuit works normally, the circuit breaker can achieve the functions of power failure, power supply, circuit conversion and the like by closing or opening a circuit for supplying electric energy; when the electrical circuit is in overload, short circuit and other abnormalities, the circuit breaker can cut off the electrical circuit by tripping, so that the safety of workers and the normal operation of equipment are prevented from being endangered due to circuit faults. When the circuit breaker is used for a three-phase four-wire system power system, a multi-pole circuit breaker unit is required to be installed according to application occasions to protect an electric circuit, and when any one phase of circuit is overloaded or has a short-circuit fault, the circuit breaker unit on the phase is required to be linked with other circuit breaker units to simultaneously cut off the electric circuits of other phases so as to protect the whole electric circuit.

The current transformer or/and the leakage transformer of the existing circuit breaker are usually installed at the wire outlet end of the body, the circuit board is installed on the other module independently, the volume of the circuit breaker can be correspondingly increased, and the inner space of the circuit breaker body cannot be fully utilized.

In view of the above, it is an urgent need in the art to provide a circuit breaker with reasonable layout and space saving to overcome the above-mentioned drawbacks of the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem provide a reclosing circuit breaker, adopt the length of extension inlet wire end, improve the length proportion of inlet wire end, make full use of the body inner space of circuit breaker for the overall arrangement of circuit breaker is compacter reasonable in order to save space, at inlet wire end integrated current transformer and electric leakage transformer, has further improved the security performance of this circuit breaker. In order to solve the above problem, the utility model provides a pair of reclosing circuit breaker, its technical scheme as follows:

the utility model discloses a reclosing circuit breaker, include: the circuit breaker comprises a wire inlet end, a wire outlet end and a switch-off and switch-on mechanism, wherein the wire inlet end and the wire outlet end are respectively in circuit connection with the switch-off and switch-on mechanism, and the length of the wire inlet end is greater than that of the wire outlet end. The length of the wire inlet end is the length occupied by the wire inlet end in the direction from the wire inlet end to the wire outlet end; similarly, the length of the outlet end refers to the length occupied by the outlet end in the direction from the inlet end to the outlet end.

The utility model discloses a reclosing lock circuit breaker compares with prior art's circuit breaker, through the length of extension inlet wire end, promotes the usable space of inlet wire end, makes good use of inlet wire end space rationally, reaches the purpose of dwindling whole circuit breaker volume effectively.

As the improvement of the reclosing circuit breaker of the utility model, the length of the wire inlet end of the circuit breaker is 1.2-3.5 times of that of the wire outlet end. Therefore, all parts of the circuit breaker can be more reasonably arranged, and the purposes of reasonable arrangement and full utilization of space are achieved.

As a further improvement, the incoming line end is provided with a phase line, a zero line, current transformers and leakage transformers, each phase line is provided with one current transformer, and all the phase lines and all the zero lines penetrate through the same leakage transformer. Like this, current transformer and electric leakage transformer all install in the inlet wire end, and each signal of telecommunication all takes from the inlet wire end promptly for the overall arrangement is compacter reasonable, and the security is higher.

Further, the current transformer and the leakage transformer are sampling elements.

Furthermore, the circuit breaker further comprises a circuit board, the circuit board is arranged between the incoming line end and the switching-on/switching-off mechanism, and the circuit board provides switching-off or switching-on indication signals for the switching-on/switching-off mechanism according to the collected voltage signals. Therefore, the circuit board obtains electricity from the incoming line end, voltage signals in the circuit can be detected through AD conversion, the current transformer and the leakage transformer respectively detect current and leakage current in the circuit board, then the collected signal value is compared with a set threshold value, and the product is switched off when the signal value exceeds the threshold value.

Furthermore, the brake opening and closing mechanism comprises a handle, a triangular shaft and a motor, and the motor can drive the triangular shaft under the indication of the indication signal so as to drive the handle to open or close the brake.

The utility model discloses a reclosing circuit breaker's theory of operation is: when the signal value collected in the circuit exceeds a set threshold value, the circuit board sends a driving signal to the motor, and then the motor drives the triangular shaft to drive the handle to open the brake; when the signal value collected in the circuit does not exceed the set threshold value, the circuit board sends a driving signal to the motor, and then the motor drives the triangular shaft to drive the handle to close.

The utility model provides a reclosing circuit breaker's beneficial effect is:

by lengthening the length of the wire inlet end, the available space of the wire inlet end is improved, the space of the wire inlet end is reasonably utilized, and the purpose of effectively reducing the volume of the whole breaker is achieved.

Through all installing current transformer and electric leakage transformer at the inlet wire end, each signal of telecommunication all takes from the inlet wire end promptly for the overall arrangement is compacter reasonable, and the security is higher.

The circuit board is powered from the wire inlet end, voltage signals in the circuit can be detected through AD conversion, the current transformer and the leakage transformer respectively detect current and leakage current in the circuit board, then the collected signal value is compared with a set threshold value, and the product is switched off when the signal value exceeds the threshold value.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic diagram of an embodiment of a reclosing circuit breaker of the present invention;

fig. 2 is a schematic diagram of an open state of the reclosing circuit breaker according to the embodiment of the present invention;

fig. 3 is a schematic diagram of a closing state of the reclosing circuit breaker according to the embodiment of the present invention.

The figures are labeled as follows:

1-a wire inlet end; 2-a wire outlet end; 3-switching on and off the brake mechanism; 4-a circuit board; 11-phase line; 12-zero line; 13-a current transformer; 14-a leakage transformer; 31-a handle; 32-triangular axis; 33-motor.

Detailed Description

In order to make the technical solution in the embodiments of the present invention better understood and make the above objects, features and advantages of the present invention more obvious and understandable, the following description of the embodiments of the present invention is provided with reference to the accompanying drawings.

It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 1, fig. 2 and fig. 3, a reclosing circuit breaker of the present embodiment includes: the device comprises a wire inlet end 1, a wire outlet end 2 and a switch-off and switch-on mechanism 3, wherein the wire inlet end 1 and the wire outlet end 2 are respectively in circuit connection with the switch-off and switch-on mechanism 3, and the length of the wire inlet end 1 is greater than that of the wire outlet end 2. The length of the inlet end 1 refers to the length occupied by the inlet end 1 in the direction from the inlet end 1 to the outlet end 2; similarly, the length of the outlet end 2 refers to the length occupied by the outlet end 2 in the direction from the inlet end 1 to the outlet end 2.

In a preferred embodiment, the length of the inlet end 1 is 1.2 to 3.5 times the length of the outlet end 2. More preferably, the length of the inlet end 1 is 1.5-2.5 times the length of the outlet end 2.

Further preferably, the incoming line terminal 1 is provided with a phase line 11, a zero line 12, a current transformer 13 and a leakage transformer 14, one current transformer 13 is installed on each phase line 11, and all the phase lines 11 and all the zero lines 12 pass through the same leakage transformer 14.

Further preferably, the current transformer 13 and the leakage transformer 14 are both sampling elements.

More preferably, the circuit breaker further comprises a circuit board 4, the circuit board 4 is arranged between the incoming line end 1 and the switching-off and switching-on mechanism 3, and the circuit board 4 provides switching-off or switching-on indication signals for the switching-off and switching-on and switching-off mechanism 3 according to the collected voltage signals.

Further preferably, the opening and closing mechanism 3 comprises a handle 31, a triangular shaft 32 and a motor 33, and the motor 33 can drive the triangular shaft 32 under the indication of the indication signal so as to drive the handle 31 to open or close.

The operating principle of the reclosing circuit breaker described in this embodiment is: when the signal value collected in the circuit exceeds a set threshold value, the circuit board 4 sends a driving signal to the motor 33, and then the motor 33 drives the triangular shaft 32 to drive the handle 31 to open; when the signal value collected in the circuit does not exceed the set threshold value, the circuit board 4 sends a driving signal to the motor 33, and then the motor 33 drives the triangular shaft 32 to drive the handle 31 to be switched on.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.

The embodiments of the present invention are described in detail with reference to the drawings, but the present invention is not limited to the described embodiments. Various changes, modifications, substitutions and alterations to these embodiments will occur to those skilled in the art without departing from the spirit and scope of the present invention.

Claims

1. A reclosing circuit breaker comprising: the circuit breaker is characterized in that the length of the wire inlet end (1) is greater than that of the wire outlet end (2).

2. Reclosing circuit breaker according to claim 1, characterized in that the length of the incoming end (1) is 1.2-3.5 times the length of the outgoing end (2).

3. The reclosing circuit breaker according to claim 2, characterized in that the incoming line end (1) is provided with a phase line (11), a zero line (12), a current transformer (13) and a leakage transformer (14), one current transformer (13) is installed on each phase line (11), and all the phase lines (11) and all the zero lines (12) pass through the same leakage transformer (14).

4. Reclosing circuit breaker according to claim 3, characterized in that the current transformer (13) and the leakage transformer (14) are both sampling elements.

5. The reclosing circuit breaker according to any one of claims 1 to 4, characterized in that the circuit breaker further comprises a circuit board (4), wherein the circuit board (4) is arranged between the incoming line end (1) and the opening and closing mechanism (3), and the circuit board (4) provides an indication signal of opening or closing for the opening and closing mechanism (3) according to the collected voltage signal.

6. The reclosure breaker according to claim 5, characterized in that the breaking mechanism (3) comprises a handle (31), a triangular shaft (32) and a motor (33), and the motor (33) can drive the triangular shaft (32) to open or close the handle (31) under the indication of the indication signal.