CN220543798U

CN220543798U - Operating mechanism and combined circuit breaker

Info

Publication number: CN220543798U
Application number: CN202320993491.9U
Authority: CN
Inventors: 柳文玮; 蒋志龙
Original assignee: Ningbo Tianan Smart Grid Technology Co ltd
Current assignee: Ningbo Tianan Smart Grid Technology Co ltd
Priority date: 2023-04-25
Filing date: 2023-04-25
Publication date: 2024-02-27
Anticipated expiration: 2033-04-25

Abstract

The application discloses operating mechanism and combination formula circuit breaker belongs to power equipment technical field, operating mechanism includes first interlocking mechanism, first interlocking mechanism includes actuating mechanism, selecting mechanism, first drive mechanism, second drive mechanism, actuating mechanism is suitable for driving selecting mechanism activity, first drive mechanism, second drive mechanism dispersion setting are on selecting mechanism's movable path, selecting mechanism can drive first drive mechanism, second drive mechanism activity successively, first drive mechanism is connected with isolator's isolation axle, second drive mechanism is connected with earthing switch's earthing axle. The device has the advantages of simple and reliable structure, and capability of interlocking the isolating switch and the grounding switch and reducing potential safety hazards due to the fact that the operation sequence of closing and opening is solidified.

Description

Operating mechanism and combined circuit breaker

Technical Field

The application relates to the technical field of power equipment, in particular to an operating mechanism and a combined circuit breaker.

Background

According to the requirements of GB 1985-2004 'high-voltage alternating-current isolating switch and grounding switch' and DL/T486-2000 'alternating-current high-voltage isolating switch and grounding switch ordering technical condition', an interlocking device should be additionally arranged between the isolating switch and the matched grounding switch. The interlocking device is used for limiting the opening and closing actions of the isolating switch and the grounding switch, so that the requirement that the grounding switch cannot be closed when the isolating switch is closed and the isolating switch cannot be closed when the grounding switch is closed, which are specified in national standards, is met.

In old high-voltage switch equipment, the isolating switch and the grounding switch are respectively provided with independent operating mechanisms, the switching-on and switching-off operation sequences of the isolating switch and the grounding switch are not directly introduced and solidified into the unified operating mechanisms, operators are relied on to control during switching-on and switching-off actions, and the operators are easy to misjudge and operate, so that great potential safety hazards exist.

Therefore, a new operating mechanism is needed to be designed to realize the interlocking function of the isolating switch and the grounding switch.

Disclosure of Invention

An object of the application is to provide an operating mechanism, realize simple structure reliably, solidification closes the floodgate operation order and makes isolator and earthing switch interlocking, reduction potential safety hazard.

Another object of the present application is to provide a combined circuit breaker employing the above-mentioned operating mechanism.

In order to achieve one of the purposes of the application, the technical scheme adopted by the application is as follows: the first interlocking mechanism comprises a driving mechanism, a selecting mechanism, a first transmission mechanism and a second transmission mechanism, wherein the driving mechanism is suitable for driving the selecting mechanism to move, the first transmission mechanism and the second transmission mechanism are arranged on a moving path of the selecting mechanism in a dispersing mode, the selecting mechanism can drive the first transmission mechanism and the second transmission mechanism to move successively, the first transmission mechanism is connected with an isolating shaft of an isolating switch, and the second transmission mechanism is connected with a grounding shaft of a grounding switch.

Preferably, the selection mechanism comprises a first gear, the first transmission mechanism comprises a second gear, the second transmission mechanism comprises a third gear, the first gear, the second gear and the third gear are arranged on the same plane, and gear teeth are locally arranged on the periphery of the first gear.

Preferably, the second gear and/or the isolating shaft is/are provided with a first trigger piece, the operating mechanism comprises a first switch arranged at two sides of the first trigger piece, the third gear and/or the grounding shaft is/are provided with a second trigger piece, the operating mechanism comprises a second switch arranged at two sides of the second trigger piece, and the first switch and the second switch are all in communication connection with the driving mechanism.

Preferably, the driving mechanism is connected with the selecting mechanism through a gear set, the driving mechanism comprises an output shaft, the gear set at least comprises a first transmission gear coaxially arranged with the output shaft and a second transmission gear coaxially arranged with the selecting mechanism, and the first transmission gear drives the second transmission gear to rotate.

Preferably, the gear set is a reduction gear set, a reduction gear is arranged between the first transmission gear and the second transmission gear, the reduction gear is meshed with the first transmission gear and the second transmission gear respectively, and the number of teeth of the reduction gear is greater than that of the first transmission gear and smaller than or equal to that of the second transmission gear.

Preferably, the drive mechanism comprises a motor.

Preferably, the isolating shaft is provided with a first operation panel, the grounding shaft is provided with a second operation panel, and the first operation panel and the second operation panel form a second interlocking mechanism through shape matching.

Preferably, the first operation panel includes a first concave portion and a first convex portion, the second operation panel includes a second concave portion and a second convex portion, when the grounding switch and the disconnecting switch are in a switching-off state, the first concave portion and the second concave portion are opposite to each other, so as to provide avoidance for the first convex portion or the second convex portion, and in a process of switching on the disconnecting switch and the grounding switch simultaneously, the first convex portion and the second convex portion are close to each other and collide.

As one preferable mode, the device further comprises two fixing plates, wherein the two fixing plates are arranged at intervals and connected through a supporting rod, a mounting cavity is formed between the two fixing plates, a first transmission mechanism, a selection mechanism and a second transmission mechanism are arranged in the mounting cavity and are arranged downwards from top to bottom, a driving mechanism is arranged on one side of the first transmission mechanism, and two ends of the driving mechanism, the isolating shaft and the grounding shaft are respectively connected with the two fixing plates.

In order to achieve another purpose of the application, the technical scheme adopted by the application is as follows: the combined circuit breaker is applied to the operating mechanism.

Compared with the prior art, the beneficial effect of this application lies in: (1) The operation mechanism of the isolating switch and the grounding switch are integrated, and the isolating switch and the grounding switch are sequentially driven to conduct switching-on/switching-off actions by a driving mechanism through a selection mechanism, so that the isolating switch and the grounding switch are switched on/off in a step-by-step mode, related requirements are met, and potential safety hazards caused by misoperation are solved. (2) Compared with the existing operating mechanism, the operating mechanism has fewer parts and simple and reliable structure; (3) The driving mechanism can use the permanent magnet motor to realize electric control, and is convenient to apply to occasions needing remote operation.

Drawings

FIG. 1 is a schematic perspective view of a first angle of an operating mechanism during an isolated brake-off grounding brake-off;

FIG. 2 is a schematic perspective view of a second angle of the operating mechanism in the state shown in FIG. 1;

FIG. 3 is a schematic side view of the actuator mechanism in the state shown in FIG. 1;

FIG. 4 is a schematic view of the cross-sectional structure in the direction A-A in FIG. 3;

FIG. 5 is a schematic cross-sectional view of the operating mechanism during the isolated brake-separating, grounding and closing;

FIG. 6 is a schematic diagram of the front surface of the operating mechanism in the state shown in FIG. 5;

FIG. 7 is a schematic diagram illustrating the movement of the grounding switch during closing the isolation switch;

in the figure: 10. a driving mechanism; 11. an output shaft; 20. a selection mechanism; 21. a first gear; 30. a first transmission mechanism; 31. a second gear; 40. a second transmission mechanism; 41. a third gear; 51. a fixing plate; 52. a support rod; 5a, a mounting cavity; 61. a separation shaft; 62. a first trigger; 63. a first operation panel; 631. a first convex portion; 632. a first concave portion; 71. a grounding shaft; 72. a second trigger; 73. a second operation panel; 731. a second convex portion; 732. a second concave portion; 74. a grounding crank arm; 81. a first switch; 82. a second switch; 90. a gear set; 91. a first transmission gear; 92. a second transmission gear; 93. a reduction gear.

Detailed Description

The present application will be further described with reference to the specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present application, it should be noted that, for the azimuth terms such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present application and simplifying the description, and it is not to be construed as limiting the specific protection scope of the present application that the device or element referred to must have a specific azimuth configuration and operation, as indicated or implied.

It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

The terms "comprises" and "comprising," along with any variations thereof, in the description and claims of the present application are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.

An operating mechanism is shown in fig. 1 to 7, and comprises a first interlocking mechanism, wherein the first interlocking mechanism comprises a driving mechanism 10, a selecting mechanism 20, a first transmission mechanism 30 and a second transmission mechanism 40, the driving mechanism 10 is suitable for driving the selecting mechanism 20 to move, the first transmission mechanism 30 and the second transmission mechanism 40 are arranged on a moving path of the selecting mechanism 20 in a dispersing way, the selecting mechanism 20 can drive the first transmission mechanism 30 and the second transmission mechanism 40 to move successively, the first transmission mechanism 30 is connected with an isolating shaft 61 of an isolating switch, and the second transmission mechanism 40 is connected with a grounding shaft 71 of a grounding switch.

The combined breaker for new energy is formed by combining a vacuum breaker, a disconnecting switch and a grounding switch, and the operation sequence of the vacuum breaker, the disconnecting switch and the grounding switch is required to meet the five-prevention interlocking function. The existing new energy combined breaker interrupt circuit breaker can be electrically operated remotely, and the isolating switch and the grounding switch can only be manually operated, so that remote electric operation cannot be realized. The driving mechanism 10 can use a motor to realize electric control of an operating mechanism, and can realize remote electric operation functions of an isolating switch and a grounding switch. Further, in most of the existing combined circuit breakers, each switch is independently controlled by a plurality of operating mechanisms, the operating mechanisms are large in overall size and poor in reliability, the operating mechanisms of the isolating switch and the grounding switch are integrated, one driving mechanism 10 is used for sequentially driving the isolating switch and the grounding switch to conduct switching-on/switching-off actions through a selecting mechanism 20, the isolating switch and the grounding switch are enabled to conduct switching-on/switching-off in a step-by-step mode, relevant requirements are met, potential safety hazards caused by misoperation are solved, parts of the operating mechanisms are fewer, and the combined circuit breaker is simple and reliable in structure.

Specifically, in this embodiment, the selection mechanism 20 includes a first gear 21, the first transmission mechanism 30 includes a second gear 31, the second transmission mechanism 40 includes a third gear 41, the first gear 21, the second gear 31 and the third gear 41 are disposed on the same plane, and teeth are partially disposed on the periphery of the first gear 21, so that the second gear 31 and the third gear 41 are driven to rotate sequentially when the first gear 21 rotates.

Further, as shown in fig. 1 to 3, the operating mechanism includes two fixing plates 51, the two fixing plates 51 are arranged at intervals and are connected through a supporting rod 52, a mounting cavity 5a is formed between the two fixing plates 51, the first transmission mechanism 30, the selection mechanism 20 and the second transmission mechanism 40 are arranged in the mounting cavity 5a and are arranged downwards from top to bottom, the driving mechanism 10 is arranged on one side of the first transmission mechanism 30, and two ends of the driving mechanism 10, the isolation shaft 61 and the grounding shaft 71 are respectively connected with the two fixing plates 51, so that the structure is simple and compact.

In some embodiments, the drive mechanism 10 includes a motor, it being understood that the motor output shaft 11 may be directly coupled to the selection mechanism 20 or indirectly coupled to the selection mechanism 20 via a gear set 90, a speed reducer, or the like.

In the prior art, when the grounding switch and the isolating switch are not in place, there is an operation hidden trouble, as an improvement, as shown in fig. 4 and 5, the second gear 31 and/or the isolating shaft 61 are provided with the first trigger piece 62, correspondingly, the operation mechanism comprises the first switch 81 arranged at two sides of the first trigger piece 62, the first switch 81 is in communication connection with the driving mechanism 10, so that when the isolating switch is in place, the first trigger piece 62 triggers the first switch 81, the first switch 81 cuts off the working power supply of the motor, and the operation mechanism stops moving. The on/off brake can be automatically judged to be in place, and the driving mechanism 10 is controlled to be powered off after the on/off brake is in place, so that the operating mechanism can be maintained in the current state.

Similarly, the third gear 41 and/or the grounding shaft 71 are/is provided with a second trigger piece 72, and the corresponding operating mechanism comprises second switches 82 arranged at two sides of the second trigger piece 72, the second switches 82 are in communication connection with the driving mechanism 10, and when the grounding switch is in place, the second trigger piece 72 triggers the second switches 82, so that the second switches 82 cut off the working power supply of the motor, and the operating mechanism stops moving.

Further, the first switch 81 and the second switch 82 are micro-motion travel switches, the first trigger piece 62 and the second trigger piece 72 are L-shaped bent plates, and when the L-shaped bent plates rotate along with the isolating shaft 61 or the grounding shaft 71 and are closed or opened in place, the L-shaped bent plates abut against the corresponding travel switches, so that the driving mechanism 10, such as a motor, is powered off. Simple structure, convenient use and low cost.

Additionally, considering that the output shaft 11 of the driving mechanism 10 and the selecting mechanism 20 may be different in arrangement of the parts of the operating mechanism, the driving mechanism 10 is connected with the selecting mechanism 20 through a gear set 90, as shown in fig. 1 and 6, the driving mechanism 10 includes the output shaft 11, the gear set 90 includes at least a first transmission gear 91 coaxially disposed with the output shaft 11 and a second transmission gear 92 coaxially disposed with the selecting mechanism 20, and the first transmission gear 91 drives the second transmission gear 92 to rotate.

In some embodiments, the gear set 90 is a reduction gear set, a reduction gear 93 is disposed between the first transmission gear 91 and the second transmission gear 92, the reduction gear 93 is meshed with the first transmission gear 91 and the second transmission gear 92 respectively, and the number of teeth of the reduction gear 93 is greater than the number of teeth of the first transmission gear 91 and less than or equal to the number of teeth of the second transmission gear 92. The gear set 90 can realize the function of rotating speed reduction, and has simple structure and easy assembly.

In order to further understand the working principle of the operating mechanism, the working process that the operating mechanism controls the grounding switch to be switched on is explained, the isolating switch and the grounding switch are in a switching-off state as shown in fig. 1 to 4 at the beginning, at the moment, the motor is powered on, the output shaft 11 rotates, the first gear 21 is driven to rotate through the gear set 90, the first gear 21 rotates clockwise to drive the third gear 41 to rotate anticlockwise, the third gear 41 moves from the state of fig. 4 to the state of fig. 5, the grounding shaft 71 drives the grounding crank arm 74 to rotate, and when the isolating switch and the grounding switch are switched on in place, the second trigger piece 72 triggers the second switch 82 to cut off the working power supply of the motor. Since the first gear 21 is only partially toothed, the second gear 31 on the isolating shaft 61 does not rotate during the grounding switch-on process, and the isolating switch is in the switch-off position and does not act.

Based on fig. 5, when the motor drives the first gear 21 to rotate anticlockwise, the grounding opening and the isolating closing can be controlled successively. The electric interlocking of the isolating switch and the grounding switch is realized by forward and reverse rotation of a motor.

In some embodiments, the isolating shaft 61 is provided with a first operating disk 63, the grounding shaft 71 is provided with a second operating disk 73, and the first operating disk 63 and the second operating disk 73 form a second interlocking mechanism through a shape fit.

It can be understood that when the disconnecting switch and the grounding switch are manually opened/closed, the first operation panel 63 and the second operation panel 73 can be rotated. That is, the second interlock mechanism corresponds to a manual interlock mechanism.

Specifically, the first operation panel 63 includes a first concave portion 632 and a first convex portion 631, the second operation panel 73 includes a second concave portion 732 and a second convex portion 731, and when the grounding switch and the isolating switch are both in the open state as shown in fig. 1-4, the first concave portion 632 is opposite to the second concave portion 732 to provide avoidance for the first convex portion 631 or the second convex portion 731.

As shown in fig. 5 and 6, when the isolating switch is opened and the grounding switch is closed, the first concave portion 632 provides a space for avoiding the second convex portion 731, so that the second operating panel 73 can rotate from the opening position to the closing position, and in fig. 7, the closing of the isolating switch is illustrated, and when the grounding switch is opened, the second concave portion 732 provides a space for avoiding the first convex portion 631, so that the first operating panel 63 can rotate from the opening position to the closing position.

As shown by the broken line in fig. 7, in the process of closing the isolating switch and the grounding switch simultaneously, the first convex portion 631 and the second convex portion 731 are close to each other and collide with each other, so that the two switches cannot be closed simultaneously.

Further, the first convex portion 631 and the second convex portion 731 are arc-shaped protrusions, and the first concave portion 632 is an arc-shaped recess.

In order to facilitate grasping the current on/off state, in the present embodiment, the first operation panel 63 and the second operation panel 73 are provided with corresponding indication characters, and the current on/off state is indicated by the characters on the opposite right side.

The application also provides a combined circuit breaker, which is applied to the operating mechanism. The remote control device has the advantages of simple structure, interlocking of the isolating switch and the grounding switch and remote control.

The foregoing has outlined the basic principles, main features and advantages of the present application. It will be appreciated by persons skilled in the art that the present application is not limited to the embodiments described above, and that the embodiments and descriptions described herein are merely illustrative of the principles of the present application, and that various changes and modifications may be made therein without departing from the spirit and scope of the application, which is defined by the appended claims. The scope of protection of the present application is defined by the appended claims and equivalents thereof.

Claims

1. An operating mechanism, characterized in that: the device comprises a first interlocking mechanism, wherein the first interlocking mechanism comprises a driving mechanism, a selecting mechanism, a first transmission mechanism and a second transmission mechanism, the driving mechanism is suitable for driving the selecting mechanism to move, the first transmission mechanism and the second transmission mechanism are arranged on the moving path of the selecting mechanism in a scattered manner, the selecting mechanism can drive the first transmission mechanism and the second transmission mechanism to move successively, the first transmission mechanism is connected with an isolating shaft of an isolating switch, and the second transmission mechanism is connected with a grounding shaft of a grounding switch.

2. The operating mechanism as claimed in claim 1, wherein: the selection mechanism comprises a first gear, the first transmission mechanism comprises a second gear, the second transmission mechanism comprises a third gear, the first gear, the second gear and the third gear are arranged on the same plane, and gear teeth are locally arranged on the periphery of the first gear.

3. The operating mechanism as claimed in claim 2, wherein: the second gear and/or the isolating shaft is/are provided with a first trigger piece, the operating mechanism comprises a first switch arranged on two sides of the first trigger piece, the third gear and/or the grounding shaft is/are provided with a second trigger piece, the operating mechanism comprises a second switch arranged on two sides of the second trigger piece, and the first switch and the second switch are all in communication connection with the driving mechanism.

4. The operating mechanism as claimed in claim 1, wherein: the driving mechanism is connected with the selection mechanism through a gear set, the driving mechanism comprises an output shaft, the gear set at least comprises a first transmission gear coaxially arranged with the output shaft and a second transmission gear coaxially arranged with the selection mechanism, and the first transmission gear drives the second transmission gear to rotate.

5. The operating mechanism as claimed in claim 4, wherein: the gear set is a reduction gear set, a reduction gear is arranged between the first transmission gear and the second transmission gear, the reduction gear is respectively meshed with the first transmission gear and the second transmission gear, and the number of teeth of the reduction gear is larger than that of the first transmission gear and smaller than or equal to that of the second transmission gear.

6. The operating mechanism as claimed in any one of claims 1 to 5, wherein: the drive mechanism includes a motor.

7. The operating mechanism as claimed in claim 1, wherein: the isolating shaft is provided with a first operation disk, the grounding shaft is provided with a second operation disk, and the first operation disk and the second operation disk form a second interlocking mechanism through shape matching.

8. The operating mechanism as claimed in claim 7, wherein: the first operation panel comprises a first concave part and a first convex part, the second operation panel comprises a second concave part and a second convex part, when the grounding switch and the isolating switch are in a switching-off state, the first concave part and the second concave part are oppositely arranged so as to provide avoidance for the first convex part or the second convex part, and the first convex part and the second convex part are close to each other and collide with each other in the process of switching on the grounding switch simultaneously.

9. The operating mechanism as claimed in claim 1, wherein: the device comprises a fixed plate, a first transmission mechanism, a second transmission mechanism, a driving mechanism, a separation shaft, a grounding shaft, a support rod, a first transmission mechanism, a second transmission mechanism, a first fixing plate, a second transmission mechanism, a first driving mechanism and a second driving mechanism, wherein the two fixing plates are arranged at intervals and connected through the support rod, the first transmission mechanism, the second transmission mechanism and the second driving mechanism are arranged in the installation cavity from top to bottom, the driving mechanism is arranged on one side of the first transmission mechanism, and the two ends of the separation shaft and the two ends of the grounding shaft are respectively connected with the two fixing plates.

10. The combined breaker is characterized in that: use of an operating mechanism according to any one of claims 1-9.