CN218918688U - Automatic brake-separating and tripping mechanism for misoperation of high-voltage circuit breaker - Google Patents
Automatic brake-separating and tripping mechanism for misoperation of high-voltage circuit breaker Download PDFInfo
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- CN218918688U CN218918688U CN202320061233.7U CN202320061233U CN218918688U CN 218918688 U CN218918688 U CN 218918688U CN 202320061233 U CN202320061233 U CN 202320061233U CN 218918688 U CN218918688 U CN 218918688U
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- circuit breaker
- breaker
- interlocking
- chassis
- opening
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Abstract
The utility model relates to the field of breaker opening, and discloses an automatic opening tripping mechanism for misoperation of a high-voltage breaker, wherein the breaker is fixedly arranged in a breaker chassis, a left side pushing interlocking piece and a right side pushing interlocking piece of the breaker are arranged at two sides of the breaker chassis, an opening interlocking tripping device is arranged in the breaker chassis at a position corresponding to the left side pushing interlocking piece of the breaker, a closing interlocking tripping device is arranged in the breaker chassis at a position corresponding to the right side pushing interlocking piece of the breaker, an interlocking fixing plate is arranged in the middle of the breaker chassis, an opening interlocking transmission device and a closing interlocking transmission device are arranged at two sides of the interlocking fixing plate, a grounding device is arranged at the lower end of the breaker chassis, and a secondary plug-in pushing device is arranged at the front end of the breaker chassis.
Description
Technical Field
The utility model relates to the field of breaker opening, in particular to an automatic opening tripping mechanism for misoperation of a high-voltage breaker.
Background
In the current power system, the high-voltage switch cabinets are all provided with a five-prevention interlocking design, so that personnel safety of operators is protected. In some accidents occurring in the operation process, operators do not need to operate according to regulations, and the interlocking mechanism is broken by brute force, so that the accidents occur.
High tension switchgear operation protection requirement: the circuit breaker is in the working position, and in the closing state, the circuit breaker can not enter the test position from the working position. If the interlocking device is damaged forcedly, the mechanism can realize opening and tripping of the circuit breaker when the circuit breaker is pulled out by mistake, and timely cut off the circuit, thereby preventing the occurrence of arcing phenomenon, protecting the safety of operators and improving the reliability of the five-prevention interlocking of the high-voltage switch cabinet.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the utility model provides an automatic opening and tripping mechanism for misoperation of a high-voltage circuit breaker, which solves the problems.
(II) technical scheme
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an automatic brake release tripping device of high tension circuit breaker maloperation, includes circuit breaker chassis car and circuit breaker, circuit breaker fixed mounting and circuit breaker chassis car's inside, and circuit breaker chassis car's both sides are provided with circuit breaker left side propulsion interlock and circuit breaker right side propulsion interlock, and circuit breaker chassis car's inside corresponds circuit breaker left side propulsion interlock's position is provided with brake release interlock, and circuit breaker chassis car's inside corresponds circuit breaker right side propulsion interlock's position is provided with brake release, and circuit breaker chassis car's intermediate position is provided with the interlocking fixed plate, and the both sides of interlocking fixed plate correspond brake release interlock and brake release, and brake release interlock is provided with brake release and brake release, and circuit breaker chassis car's lower extreme is provided with earthing device, and circuit breaker chassis car's positive front end is provided with secondary plug-in pushing device.
Preferably, the positions of the breaker chassis corresponding to the opening interlocking transmission device and the closing interlocking transmission device are provided with partial gate contacts in the breaker and closing contacts in the breaker.
Preferably, the opening interlocking tripping device comprises a cylinder, a shaft, a groove plate, a left interlocking device seat plate, a transverse connecting plate and a groove plate shaft, wherein the left interlocking device seat plate is fixedly connected to the inner wall of the circuit breaker chassis in an L shape, the cylinder is movably hinged to one end of the groove plate through the shaft, the other end of the groove plate is movably hinged to the upper end of the left interlocking device seat plate through the groove plate shaft, and the transverse connecting plate is movably connected between the groove plate and the opening interlocking transmission device.
Preferably, the brake release interlocking transmission device comprises a transverse pin, an upper pin, a connecting plate, a pressure spring, an upper pin clamping plate and a brake release spring support seat, wherein the brake release spring support seat is an L-shaped cylinder, the two ends of the brake release spring support seat are provided with sliding grooves, the transverse pin is movably inserted into one end of the brake release spring support seat, the upper end of the brake release spring support seat is movably inserted with the upper pin, the connecting plate is obliquely arranged and fixedly connected between the transverse pin and the upper pin, the two ends of the connecting plate are movably clamped in the sliding grooves of the brake release spring support seat, the transverse pin is positioned at one end inside the brake release spring support seat and movably connected with the inner wall through the pressure spring, the transverse pin is movably hinged with the upper pin clamping plate through a movable piece, and the upper pin clamping plate is fixedly connected with the transverse connecting plate.
Preferably, the upper pin is provided with a breaker opening release and a breaker closing release corresponding to the top ends of the breaker inner opening contact and the breaker inner closing contact respectively, and the breaker opening release and the breaker closing release are movably attached to the breaker inner opening contact and the breaker inner closing contact.
(III) beneficial effects
Compared with the prior art, the utility model provides the automatic brake-separating and tripping mechanism for misoperation of the high-voltage circuit breaker, which has the following beneficial effects:
1. the high-voltage circuit breaker misoperation automatic opening and tripping mechanism respectively realizes the opening and closing of the circuit breaker through the opening and closing interlocking devices on two sides, realizes the opening and tripping of the circuit breaker through the opening and tripping control of the left opening interlocking device and the transmission device, and realizes the opening and closing of the circuit breaker through the opening and tripping control of the right opening interlocking device and the transmission device.
2. The automatic breaking tripping mechanism for the misoperation of the high-voltage circuit breaker realizes the interlocking protection of the circuit breaker which is accidentally swung out under the load closing state of the circuit breaker through the breaking tripping interlocking device, and prevents the transverse pin in the breaking tripping transmission device from moving leftwards when in misoperation, thereby driving the upper pin to move upwards through the connecting plate, realizing breaking tripping, preventing the breaking of the circuit breaker with load, and avoiding arc danger caused by the breaking of the circuit breaker with load.
Drawings
FIG. 1 is a perspective view of the structure of the present utility model;
FIG. 2 is a schematic top view of the present utility model;
FIG. 3 is a schematic front view of the present utility model;
FIG. 4 is a schematic diagram of the connection of the brake release interlock transmission device and the brake release interlock tripping device according to the present utility model;
FIG. 5 is an internal schematic view of the present utility model;
FIG. 6 is a schematic diagram of a trip unit of the present utility model;
FIG. 7 is a schematic diagram of a release interlock tripping device according to the present utility model;
FIG. 8 is a schematic diagram of a split lock transmission according to the present utility model;
FIG. 9 is a partial schematic view of a split lock interlock transmission of the present utility model.
In the figure: 1. the left side of the breaker pushes the interlocking piece; 2. a brake-separating interlocking tripping device; 3. a brake-separating interlocking transmission device; 4. an interlocking fixing plate; 5. a closing interlocking transmission device; 6. a closing interlocking tripping device; 7. the right side of the breaker pushes the interlocking piece; 8. a grounding device; 9. a secondary insert pushing device; 10. a partial gate contact in the circuit breaker; 11. a closing contact inside the breaker; 12. a transverse pin; 13. a pin is arranged; 14. a connecting plate; 15. a pressure spring; 16. an upper pin clamping plate; 17. a cylinder; 18. a shaft; 19. a trough plate; 20. a left interlocking device seat plate; 21. a transverse connection plate; 22. a grooved plate shaft; 23. the breaker is opened and tripped; 24. a breaker closing release; 25. and a brake separating spring support seat.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-9, the high-voltage circuit breaker misoperation automatic opening and tripping mechanism comprises a circuit breaker chassis and a circuit breaker, wherein the circuit breaker chassis is fixedly installed inside the circuit breaker chassis, two sides of the circuit breaker chassis are provided with a circuit breaker left side pushing interlocking piece 1 and a circuit breaker right side pushing interlocking piece 7, the position, corresponding to the circuit breaker left side pushing interlocking piece 1, inside the circuit breaker chassis is provided with an opening and interlocking tripping device 2, the position, corresponding to the circuit breaker right side pushing interlocking piece 7, inside the circuit breaker chassis is provided with a closing and interlocking tripping device 6, the middle position of the circuit breaker chassis is provided with an interlocking fixing plate 4, two sides of the interlocking fixing plate 4 are respectively corresponding to the opening and interlocking tripping device 2 and the closing and interlocking tripping device 6, the lower end of the circuit breaker chassis is provided with an auxiliary grounding device 8, the front end of the circuit breaker chassis is provided with a secondary pushing device 9, and the base mechanism is a high-voltage circuit breaker chassis pushing mechanism, and the circuit breaker chassis is driven by the opening and tripping mechanism or the circuit breaker chassis body. The circuit breaker trolley has a separation position, a test position and a working position, when the circuit breaker trolley swings into the working position, a closing button is pressed, and the circuit breaker is in a conducting working state. If the breaker trolley is shaken out by misoperation at this time, the danger of arc pulling occurs. The interlocking device for disconnecting link and tripping realizes the interlocking protection of the mistakenly-swinging-out circuit breaker in the on-load closing state of the circuit breaker without meeting the requirement of preventing the on-load disconnecting link. When misoperation is carried out, the left interlocking tripping device is pressed inwards by the guide rail in the cabinet, so that the transverse pin 12 in the brake-separating tripping transmission device is pushed to move leftwards, the upper pin 13 is driven to move upwards through the connecting plate 14, brake-separating tripping is realized, and the on-load brake is prevented.
The circuit breaker chassis is provided with a breaker inner part brake contact 10 and a breaker inner part brake contact 11 at the positions corresponding to the brake opening interlocking transmission device 3 and the brake closing interlocking transmission device 5, and the breaker inner part brake contact 10 and the breaker inner part brake contact 11 are used as connection points of the circuit breaker, so that brake opening and brake releasing are facilitated.
The opening interlocking tripping device 2 comprises a cylinder 17, a shaft 18, a groove plate 19, a left interlocking device seat plate 20, a transverse connecting plate 21 and a groove plate shaft 22, wherein the left interlocking device seat plate 20 is fixedly connected to the inner wall of a circuit breaker chassis in an L-shaped mode, the cylinder 17 is movably hinged to one end of the groove plate 19 through the shaft 18, the other end of the groove plate 19 is movably hinged to the upper end of the left interlocking device seat plate 20 through the groove plate shaft 22, the transverse connecting plate 21 is movably connected between the groove plate 19 and the opening interlocking transmission device 3, and after horizontal force is applied inwards through the cylinder 17, the groove plate 19 is driven to rotate by taking the groove plate shaft 22 as the shaft through the shaft 18, and at the moment, the transverse connecting plate 21 pushes the opening interlocking transmission device 3 and the closing interlocking transmission device 5 to move.
The opening interlocking transmission device 3 comprises a cross pin 12, an upper pin 13, a connecting plate 14, a pressure spring 15, an upper pin clamping plate 16 and an opening spring support 25, wherein the opening spring support 25 is an L-shaped cylinder, two ends of the opening spring support 25 are provided with sliding grooves, the cross pin 12 is movably inserted into one end of the opening spring support 25, the upper end of the opening spring support 25 is movably inserted with the upper pin 13, the connecting plate 14 is obliquely arranged and fixedly connected between the cross pin 12 and the upper pin 13, two ends of the connecting plate 14 are movably clamped in the sliding grooves of the opening spring support 25, one end of the cross pin 12 positioned in the opening spring support 25 is movably connected with the inner wall through the pressure spring 15, the cross pin 12 is movably hinged with the upper pin clamping plate 16 through a movable piece, the upper pin clamping plate 16 is fixedly connected with the transverse connecting plate 21, the cross pin 12 is positioned in the opening spring support 25 and horizontally moves rightward after being pushed by the transverse connecting plate 21 through the upper pin 16, the pressure spring clamping plate 14 is compressed, and the upper pin 13 is driven by the connecting plate 14 to move upward by the pressure spring 13.
The upper pin 13 is respectively provided with a breaker opening release 23 and a breaker closing release 24 corresponding to the top ends of the breaker inner opening contact 10 and the breaker inner closing contact 11, the breaker opening release 23 and the breaker closing release 24 are movably attached to the breaker inner opening contact 10 and the breaker inner closing contact 11, and the upper pin 13 is pushed upwards through the upper pin 13 so that the upper pin 13 and the breaker opening release 23 and the breaker closing release 24 are separated from the breaker inner opening contact 10 and the breaker inner closing contact 11, thereby realizing opening release and preventing on-load disconnecting link.
Working principle: the chassis truck mechanism can respectively realize the switching-on and switching-off of the circuit breaker through switching-on and switching-off interlocking devices on two sides, namely, the switching-off interlocking device on the left side and the transmission device control the switching-off tripping device 23 to realize the switching-off of the circuit breaker, and the switching-on interlocking device on the right side and the transmission device control the switching-on tripping device 24 to realize the switching-on of the circuit breaker, wherein the working position of the circuit breaker is provided with a separation position, namely, a state 1, a test position, namely, a state 2 and a working position, namely, a state 3;
when the left brake release interlocking device is at the initial position, the left brake release interlocking device is compressed inwards by a left guide rail in the cabinet, and the brake release tripping device 23 of the breaker is jacked upwards through the left brake release transmission device 3, at the moment, the breaker is in a brake release state, and at the moment, a cabin door can be closed for process operation;
when the breaker is continuously rocked into a test state, namely a state 2, the left-side opening interlocking device and the right-side opening interlocking device are both in an unstressed state, at the moment, the breaker is in an opening state, the breaker is not communicated with the main loop, and is in a disconnection state, and a tester can debug the secondary loop at the test position and test the functions of the secondary loop;
when the debugging is finished, the circuit breaker continues to move from a test position to a working position, namely a state 3, the left-side opening interlocking device and the right-side opening interlocking device are not constrained by guide rails at two sides and are in an unstressed state, the circuit breaker is in an opening position, and at the moment, the circuit breaker can realize closing and opening at the working position after energy storage;
if the circuit breaker is at the working position or in the electrified state, the working position is between 2 and 3 when the circuit breaker is swung out by manual misoperation. The left brake-separating interlocking device of the chassis truck of the circuit breaker can be continuously compressed, so that the brake-separating transmission device is triggered to jack up upwards, the brake-separating tripping device 23 of the circuit breaker works, and the brake separation of the circuit breaker is realized. The arc hazard caused by the load of the breaker shaking out of the breaker can be avoided.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a high voltage circuit breaker maloperation automatic brake separating tripping device, includes circuit breaker chassis car and circuit breaker, its characterized in that: the circuit breaker fixed mounting and the inside of circuit breaker chassis, and the both sides of circuit breaker chassis are provided with circuit breaker left side propulsion interlock (1) and circuit breaker right side propulsion interlock (7), and the inside of circuit breaker chassis corresponds the position of circuit breaker left side propulsion interlock (1) and is provided with separating brake interlock trip gear (2), and the inside of circuit breaker chassis corresponds the position of circuit breaker right side propulsion interlock (7) and be provided with closing lock trip gear (6), and the intermediate position of circuit breaker chassis is provided with interlock fixed plate (4), and both sides of interlock fixed plate (4) correspond separating brake interlock trip gear (2) and closing lock interlock trip gear (6) respectively and are provided with separating brake interlock transmission (3) and closing lock interlock transmission (5), and the lower extreme of circuit breaker chassis is provided with earthing device (8), and the positive front end of circuit breaker chassis is provided with secondary plug-in pushing device (9).
2. The high voltage circuit breaker misoperation automatic breaking trip mechanism according to claim 1, wherein: the circuit breaker chassis is characterized in that the positions corresponding to the opening interlocking transmission device (3) and the closing interlocking transmission device (5) in the circuit breaker chassis are provided with a part of gate contact (10) in the circuit breaker and a part of closing contact (11) in the circuit breaker.
3. The high voltage circuit breaker misoperation automatic breaking trip mechanism according to claim 2, wherein: the opening interlocking tripping device (2) comprises a cylinder (17), a shaft (18), a groove plate (19), a left interlocking device seat plate (20), a transverse connecting plate (21) and a groove plate shaft (22), wherein the left interlocking device seat plate (20) is fixedly connected to the inner wall of a circuit breaker chassis in an L shape, the cylinder (17) is movably hinged to one end of the groove plate (19) through the shaft (18), the other end of the groove plate (19) is movably hinged to the upper end of the left interlocking device seat plate (20) through the groove plate shaft (22), and the transverse connecting plate (21) is movably connected between the groove plate (19) and the opening interlocking transmission device (3).
4. The automatic opening and tripping mechanism for misoperation of a high voltage circuit breaker according to claim 3, wherein: the utility model provides an interlocking transmission that breaks brake (3) include cross pin (12), go up round pin (13), connecting plate (14), pressure spring (15), go up round pin splint (16) and break brake spring support seat (25), break brake spring support seat (25) are L shape section of thick bamboo, and the spout has been seted up at the both ends of break brake spring support seat (25), and cross pin (12) activity grafting is in the one end of break brake spring support seat (25), and the upper end activity grafting of break brake spring support seat (25) has last round pin (13), and connecting plate (14) are slope setting and fixed connection between cross pin (12) and last round pin (13), and the both ends movable joint of connecting plate (14) is in the spout of break brake spring support seat (25), and cross pin (12) are located the inside one end of break brake spring support seat (25) and are in the same place through pressure spring (15) and inner wall swing joint, and cross pin (12) are in the same place through movable part and last round pin splint (16) activity hinge, and last round pin splint (16) are in the same place with transverse connection (21).
5. The automatic opening and tripping mechanism for misoperation of a high voltage circuit breaker as claimed in claim 4, wherein: the upper pin (13) is respectively provided with a breaker opening release (23) and a breaker closing release (24) corresponding to the top ends of the breaker inner part gate contact (10) and the breaker inner closing contact (11), and the breaker opening release (23) and the breaker closing release (24) are movably attached to the breaker inner part gate contact (10) and the breaker inner closing contact (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320061233.7U CN218918688U (en) | 2023-01-10 | 2023-01-10 | Automatic brake-separating and tripping mechanism for misoperation of high-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320061233.7U CN218918688U (en) | 2023-01-10 | 2023-01-10 | Automatic brake-separating and tripping mechanism for misoperation of high-voltage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218918688U true CN218918688U (en) | 2023-04-25 |
Family
ID=86038840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320061233.7U Active CN218918688U (en) | 2023-01-10 | 2023-01-10 | Automatic brake-separating and tripping mechanism for misoperation of high-voltage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218918688U (en) |
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2023
- 2023-01-10 CN CN202320061233.7U patent/CN218918688U/en active Active
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