Circuit breaker with forced opening structure

Abstract

The utility model relates to a circuit breaker with a forced opening structure. The circuit breaker comprises a telescopic assembly, an opening assembly and a locking baffle plate. And the telescopic assembly is arranged on the circuit breaker frame and is a special mechanical lock for high-voltage switch cabinet equipment. The opening assembly comprises a supporting shaft and an opening lever. The support shaft is rotatably disposed on the circuit breaker frame. The opening lever is fixedly connected with the supporting shaft. One end of the locking baffle is fixedly connected with the supporting shaft, and the other end is arranged in a telescopic path of the telescopic assembly. Wherein the extension direction of the telescopic assembly points to the rotation direction of the supporting shaft when the circuit breaker is opened. According to the utility model, the telescopic assembly stretches out to push the locking baffle plate, the locking baffle plate drives the supporting shaft to rotate, and the supporting shaft drives the opening lever to rotate to execute the opening action. The forced opening action is completely completed through mechanical transmission, even if a control circuit is disconnected, forced opening can be normally executed, the situation that the circuit breaker cannot cut off the circuit in time or is mistakenly closed is avoided, and the reliability of the circuit breaker is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit breaker technical field especially relates to take forced opening structure's circuit breaker. BACKGROUND

[0002] The gas-filled cabinet (also known as gas insulated switchgear, GIS) plays a vital role in the modern power system, and is an important equipment to ensure the safe and reliable supply of electricity, and its safety performance is very important. The circuit breaker in the gas-filled cabinet can monitor the running state of electrical equipment, and when the gas-filled cabinet is overloaded, short-circuited or has other faults, the circuit breaker can quickly cut off the circuit to protect the equipment and personal safety. However, the circuit breaker realizes automatic control through the internal structure, and in some special cases, for example, in the case of abnormal electrical fault of the circuit breaker, the circuit breaker cannot timely cut off the circuit or is mistakenly closed, which may cause serious safety accidents.

[0003] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0004] In view of the above shortcomings of the prior art, the purpose of the present utility model is to provide a circuit breaker with a forced opening structure to improve the reliability of the circuit breaker.

[0005] The technical solution of the utility model is as follows:

[0006] The circuit breaker with a forced opening structure comprises: a telescopic assembly arranged on a circuit breaker frame; an opening assembly comprising: a support shaft rotatably arranged on the circuit breaker frame; an opening lever fixedly connected to the support shaft; and a locking baffle having one end fixedly connected to the support shaft and the other end arranged in the telescopic path of the telescopic assembly; wherein the extension direction of the telescopic assembly is directed to the rotation direction of the support shaft when the circuit breaker is opened; the telescopic assembly is extended to push the locking baffle, the locking baffle drives the support shaft to rotate, and the support shaft drives the opening lever to rotate to perform an opening action.

[0007] Further, an electrical switch is arranged on the circuit breaker frame, the electrical switch is arranged at the end of the locking baffle away from the telescopic assembly, the electrical switch is arranged in the movement stroke of the locking baffle, and the electrical switch is connected to the low-voltage power supply of the circuit breaker.

[0008] Further, the technical scheme is that the closing button comprises a first end away from the closing lever and a second end contacting the closing lever; the first end of the closing button is pressed, and the second end of the closing button pushes the closing lever to rotate to perform a closing action.

[0009] Further, the technical scheme is that the locking baffle comprises a tripping segment and a locking segment, the tripping segment is connected with the supporting shaft; when the telescopic assembly is extended to push the locking baffle, the locking segment moves to a line connecting the first end and the second end of the closing button, and the locking segment is closer to the first end of the closing button.

[0010] Further, the technical scheme is that the closing lever is rotatably sleeved on the supporting shaft.

[0011] Further, the technical scheme is that the supporting shaft, the locking baffle and the tripping lever are respectively provided with fastening holes; the fastener is simultaneously inserted into the fastening holes of the supporting shaft and the locking baffle to fasten and connect the supporting shaft and the locking baffle; the fastener is simultaneously inserted into the fastening holes of the supporting shaft and the tripping lever to fasten and connect the supporting shaft and the tripping lever.

[0012] Further, the technical scheme is that the locking baffle is bent to be close to the surface of the supporting shaft at the end close to the supporting shaft.

[0013] Further, the technical scheme is that the telescopic assembly is a mechanical lock special for high-voltage switch cabinet equipment.

[0014] The beneficial technical effects of the utility model are as follows:

[0015] (1) The circuit breaker with forced tripping structure in the utility model is provided with a locking baffle and a telescopic assembly, one end of the locking baffle is fixedly connected with a supporting shaft, and the other end is arranged in the telescopic path of the telescopic assembly. The telescopic assembly is driven to extend, the locking baffle is pushed to move, the supporting shaft is driven to rotate, and the tripping lever fixedly connected with the supporting shaft is driven to rotate. The extension direction of the telescopic assembly is directed to the rotating direction of the supporting shaft when the circuit breaker is tripped, so that the tripping lever driven by the telescopic assembly performs a tripping action, and the forced tripping of the circuit breaker is completed. The forced tripping action is completely completed through mechanical transmission, and even if the control circuit is disconnected, the forced tripping can be normally performed under the premise that the telescopic assembly is driven by manpower. After the forced tripping function is added to the circuit breaker, the circuit breaker can be manually forced to trip under the condition of electrical fault of the circuit breaker, so that the circuit breaker cannot be timely cut off or mis-closed, and the reliability of the circuit breaker is improved.

[0016] (2) Further, an electrical switch is further arranged, the electrical switch is connected to the low-voltage power supply of the circuit breaker, and is switched to the end of the locking baffle away from the telescopic assembly. When the telescopic assembly is driven to perform the forced opening operation, the locking baffle can trigger the electrical switch to disconnect the low-voltage power supply of the circuit breaker, so that the circuit breaker is prevented from being mistakenly closed due to an electrical fault.

[0017] (3) Further, a locking section is further arranged on the locking baffle, and the locking section blocks the first end of the closing button when the locking baffle performs the forced opening operation. At this time, the operator cannot complete closing by pressing one end of the closing button, the possibility of misoperation of the operator is reduced, and the reliability of the circuit breaker with the forced opening structure is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A perspective structural schematic view of the circuit breaker with the forced opening structure is shown.

[0019] Figure 2 A perspective structural schematic view of the circuit breaker with the forced opening structure after the circuit breaker frame is hidden is shown.

[0020] Figure 3 A rear view of the circuit breaker with the forced opening structure after the circuit breaker frame is hidden is shown.

[0021] Markings in the drawings:

[0022] 1, telescopic assembly; 2, locking baffle; 21, locking section; 22, opening section; 3, electrical switch; 4, opening assembly; 41, support shaft; 411, fastening hole; 42, opening lever; 5, circuit breaker frame; 6, closing lever; 7, closing button. DETAILED DESCRIPTION

[0023] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the drawings. It should be known that the structure, proportion, size and the like shown in the drawings attached to the present specification are only used to cooperate with the content disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the limiting conditions of the implementation of the utility model, so they do not have the technical essence, any modification of structure, change of proportion relationship or adjustment of size, as long as it does not affect the effect and purpose that can be produced by the utility model, should still fall within the scope of the technical content disclosed by the utility model.

[0024] In the description of the utility model, the orientation or positional relationship indicated by the limited terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like are the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0025] The circuit breaker with forced opening structure comprises a telescopic assembly 1, an opening assembly 4 and a locking baffle 2. The telescopic assembly 1 is arranged on a circuit breaker frame 5, and the telescopic assembly 1 is a special mechanical lock for high-voltage switch cabinet equipment, which can be a commercially available 203JS special mechanical lock for high-voltage switch cabinet equipment. The opening assembly 4 comprises a supporting shaft 41 and an opening lever 42. The supporting shaft 41 is rotatably arranged on the circuit breaker frame 5. The opening lever 42 is fixedly connected to the supporting shaft 41. One end of the locking baffle 2 is fixedly connected to the supporting shaft 41, and the other end is arranged in a telescopic path of the telescopic assembly 1. The telescopic direction of the telescopic assembly 1 is directed to the rotating direction of the supporting shaft 41 when the circuit breaker is opened. The telescopic assembly 1 is extended, the locking baffle 2 is pushed, the locking baffle 2 drives the supporting shaft 41 to rotate, and the supporting shaft 41 drives the opening lever 42 to rotate to perform an opening action. The forced opening action is completely completed through mechanical transmission. Under the premise that the telescopic assembly 1 is driven by manpower, the forced opening can be normally performed even if the control circuit is disconnected. After the circuit breaker is added with the forced opening function, the circuit breaker can be manually forced to open under the condition of electrical fault of the circuit breaker, so that the circuit breaker cannot be timely cut off or mis-closed, and the reliability of the circuit breaker is improved.

[0026] The circuit breaker frame 5 is further provided with an electrical switch 3, the electrical switch 3 is arranged at the end of the locking baffle 2 away from the telescopic assembly 1, the electrical switch 3 is arranged in the moving stroke of the locking baffle 2, and the electrical switch 3 is connected to the low-voltage power supply of the circuit breaker. When the telescopic assembly 1 is driven to perform the forced opening action, the locking baffle 2 can trigger the electrical switch 3 to disconnect the low-voltage power supply of the circuit breaker, so that the circuit breaker is prevented from being mis-closed due to electrical failure.

[0027] Preferably, fasteners are further included, and fastening holes 411 are respectively arranged on the supporting shaft 41, the locking baffle 2 and the opening lever 42. The fasteners are simultaneously inserted into the fastening holes 411 of the supporting shaft 41 and the locking baffle 2 to fasten the supporting shaft 41 and the locking baffle 2. The fasteners are simultaneously inserted into the fastening holes 411 of the supporting shaft 41 and the opening lever 42 to fasten the supporting shaft 41 and the opening lever 42. The fasteners can be bolts, studs, screws, self-tapping screws, wood screws and pins.

[0028] The closing button 7 comprises a first end away from the closing lever 6 and a second end contacting the closing lever 6. Pressing the first end of the closing button 7, the second end of the closing button 7 pushes the closing lever 6 to rotate to perform the closing action. The locking baffle 2 comprises a tripping section 22 and a locking section 21, and the tripping section 22 is connected to the support shaft 41. When the telescopic assembly 1 is extended to push the locking baffle 2, the locking section 21 moves to the line connecting the first end and the second end of the closing button 7, and the locking section 21 is closer to the first end of the closing button 7, that is, the locking section 21 blocks the first end of the closing button 7. At this time, the operator cannot complete the closing by pressing one end of the closing button 7, the possibility of misoperation of the operator is reduced, and the reliability of the circuit breaker with the forced tripping structure is improved.

[0029] The closing lever 6 is rotatably sleeved on the support shaft 41, and when the locking baffle 2 drives the support shaft 41 to rotate, the support shaft 41 will not drive the closing lever 6 to rotate, so that the forced tripping action and the closing action are prevented from interfering.

[0030] The specific working process of the utility model is as follows:

[0031] When the circuit breaker needs to be forced to trip due to an abnormal condition, the operator operates the telescopic end of the telescopic assembly 1 to extend the telescopic end in the rotation direction of the support shaft 41 when the circuit breaker is tripped. The extended telescopic end lifts the locking section 21, so that the entire locking baffle 2 rotates around the axis of the support shaft 41, drives the support shaft 41 to rotate, drives the tripping lever 42 fixedly connected to the support shaft 41 to rotate, and completes the forced tripping action. In this process, the moving locking baffle 2 triggers the electrical switch 3 to disconnect the low-voltage power supply of the circuit breaker; the locking section 21 blocks the first end of the closing button 7, so that the closing cannot be completed by pressing the closing button 7, and the functions of forced tripping and locking closing are realized.

[0032] The technical features of the above embodiments can be combined in any way. To make the description concise, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the description.

[0033] The above embodiments only express several implementation manners of the utility model, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the utility model patent. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A circuit breaker with forced opening structure, characterized in that, The utility model relates to a circuit breaker, comprising: a telescopic assembly arranged on a circuit breaker frame; an opening assembly comprising: a support shaft rotatably arranged on the circuit breaker frame; an opening lever fixedly connected to the support shaft; a locking baffle having one end fixedly connected to the support shaft and the other end arranged in a telescopic path of the telescopic assembly; wherein the telescopic assembly is arranged in a direction pointing to a rotation direction of the support shaft when the circuit breaker is opened; the telescopic assembly is extended to push the locking baffle, the locking baffle drives the support shaft to rotate, and the support shaft drives the opening lever to rotate to perform an opening action.

2. The circuit breaker with forced opening structure according to claim 1, characterized in that: The circuit breaker frame is further provided with an electrical switch arranged at an end of the locking baffle away from the telescopic assembly, the electrical switch is arranged in a movement stroke of the locking baffle, and the electrical switch is connected to a low-voltage power supply of the circuit breaker.

3. The circuit breaker with forced opening structure according to claim 1, wherein: The utility model further comprises a closing button and a closing lever; the closing button comprises a first end away from the closing lever and a second end contacting the closing lever; pressing the first end of the closing button pushes the second end of the closing button to rotate the closing lever to perform a closing action.

4. The circuit breaker with forced opening structure according to claim 3, wherein: The locking baffle comprises an opening section and a locking section; the opening section is connected to the support shaft; when the telescopic assembly is extended to push the locking baffle, the locking section moves to a line connecting the first end and the second end of the closing button, and the locking section is closer to the first end of the closing button.

5. The circuit breaker with forced opening structure according to claim 3, wherein: The closing lever is rotatably sleeved on the support shaft.

6. The circuit breaker with forced open structure according to claim 1, wherein: The utility model further comprises a fastener; the support shaft, the locking baffle and the opening lever are respectively provided with fastening holes; the fastener is simultaneously inserted into the fastening holes of the support shaft and the locking baffle to fasten the support shaft and the locking baffle; the fastener is simultaneously inserted into the fastening holes of the support shaft and the opening lever to fasten the support shaft and the opening lever.

7. The circuit breaker with forced open structure according to claim 1, wherein: An end of the locking baffle close to the support shaft is bent to match a surface of the support shaft.

8. The circuit breaker with forced opening structure according to claim 1, wherein: The telescopic assembly is a mechanical lock special for high-voltage switch cabinet equipment.

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