CN118173413A - Emergency protection device for circuit breaker and high-voltage power distribution cabinet - Google Patents
Emergency protection device for circuit breaker and high-voltage power distribution cabinet Download PDFInfo
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- CN118173413A CN118173413A CN202410574266.0A CN202410574266A CN118173413A CN 118173413 A CN118173413 A CN 118173413A CN 202410574266 A CN202410574266 A CN 202410574266A CN 118173413 A CN118173413 A CN 118173413A
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- 230000007246 mechanism Effects 0.000 claims abstract description 100
- 238000007664 blowing Methods 0.000 claims abstract description 47
- 239000007921 spray Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 8
- 230000007547 defect Effects 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 230000001960 triggered effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 7
- 230000017525 heat dissipation Effects 0.000 description 5
- 230000008033 biological extinction Effects 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 235000012431 wafers Nutrition 0.000 description 1
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Abstract
The invention relates to the technical field related to power distribution, in particular to an emergency protection device of a circuit breaker and a high-voltage power distribution cabinet, which are arranged in a circuit breaker body and comprise: the transverse rod is fixedly arranged in the circuit breaker body, a transverse moving mechanism is movably arranged on the transverse rod, the transverse moving mechanism is connected with a follow-up mechanism arranged in the circuit breaker body, the follow-up mechanism is connected with a rotating shaft of a lever in the circuit breaker body, and when the lever is separated from a connector piece in the circuit breaker body, the follow-up mechanism can drive the transverse moving mechanism to move along the length direction of the transverse rod; the air blowing mechanism is connected with the traversing mechanism and is connected with a flat nozzle spray head arranged in the breaker body, and the air blowing mechanism can promote the flat nozzle spray head to sequentially execute primary air blowing action and secondary air blowing action in the moving process of the traversing mechanism; through the mutual cooperation between each mechanism and the part, when the circuit breaker body takes place emergency control situation, can provide the protection of all for the circuit breaker body, avoid corresponding potential safety hazard.
Description
Technical Field
The invention relates to the technical field of power distribution, in particular to an emergency protection device for a circuit breaker and a high-voltage power distribution cabinet.
Background
The power distribution cabinet has the advantages of small volume, simple installation, special technical performance, fixed position, unique configuration function, no restriction of sites and common application. The circuit breaker is a switching element commonly used in a power distribution cabinet and can switch on, load and break off current under normal or abnormal loop conditions.
When the circuit breaker is disconnected, an arc phenomenon can be inevitably generated, the temperature of the arc can reach thousands of degrees centigrade, and in order to avoid danger, if the circuit breaker is not processed, the circuit breaker is likely to be damaged, for this, a corresponding arc extinguishing mechanism, namely an arc extinguishing chamber, is arranged in the existing circuit breaker and consists of a plurality of arc extinguishing grid sheets, after the arc reaches the arc extinguishing chamber, the arc is divided into a plurality of small sections by the grid sheets, so that the arc can not be maintained to be extinguished, however, the arc extinguishing grid sheets have a certain service life, when the serious burning condition occurs, the arc extinguishing grid sheets are not allowed to be used any more, and the arc extinguishing mechanism must be replaced immediately, so that the protection function of the circuit breaker is limited, and the ideal using effect is difficult to achieve.
Disclosure of Invention
The invention aims to provide an emergency protection device for a circuit breaker and a high-voltage power distribution cabinet, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
An emergency protection device for a circuit breaker, provided in a circuit breaker body, comprising:
The transverse rod is fixedly arranged in the breaker body, a transverse moving mechanism is movably arranged on the transverse rod, the transverse moving mechanism is connected with a follow-up mechanism arranged in the breaker body, the follow-up mechanism is connected with a rotating shaft of a lever in the breaker body, and when the lever is separated from a connector piece in the breaker body, the follow-up mechanism can drive the transverse moving mechanism to move along the length direction of the transverse rod;
the air blowing mechanism is connected with the traversing mechanism and is connected with a flat nozzle spray head arranged in the breaker body, and the air blowing mechanism can promote the flat nozzle spray head to sequentially execute primary air blowing action and secondary air blowing action in the moving process of the traversing mechanism;
The conduction mechanism is arranged in the circuit breaker body and matched with the transverse moving mechanism, the conduction mechanism is triggered when the flat nozzle spray nozzle executes secondary blowing action, and the circuit breaker body can be communicated with the outside.
As a further scheme of the invention: the servo mechanism comprises a disc rotatably installed in the breaker body, a sliding block slidably arranged on the cross rod and a connecting rod for connecting the sliding block and the disc, the traversing mechanism is installed on the sliding block, one end of the connecting rod is rotatably connected with the sliding block, and the other end of the connecting rod is rotatably connected with the eccentric position of the disc;
The lever and the rotating shaft of the disc are respectively provided with a first gear and a second gear, and the first gear is meshed with the second gear.
As still further aspects of the invention: the transverse moving mechanism comprises two groups of elastic sleeve structures arranged on the sliding block, and a first pulley and a second pulley which are respectively arranged at two ends of the elastic sleeve structures, wherein the first pulley is connected with the blowing mechanism, and the second pulley is connected with a guide limiting assembly arranged in the circuit breaker body.
As still further aspects of the invention: the elastic sleeving structure comprises a guide cylinder arranged on the sliding block, an upright post sleeved with the guide cylinder in a sliding mode and a cylindrical spring arranged in the guide cylinder, one end of the cylindrical spring is connected with the inner wall of the guide cylinder, the other end of the cylindrical spring is connected with a boss arranged on the upright post, and the first pulley and the second pulley are respectively arranged at two ends of the upright post.
As still further aspects of the invention: the guide limiting assembly comprises a limiting plate in the circuit breaker body and a limiting protrusion in the limiting plate, the second pulley is in butt joint with the limiting protrusion, a first straight surface, a second straight surface, a first inclined surface and a second inclined surface are formed on the limiting protrusion, one side, away from the first straight surface, of the second inclined surface is provided with a groove body, a movable part capable of rotating unidirectionally is hinged in the groove body, and the movable part is connected with an elastic sheet in the groove body.
As still further aspects of the invention: the blowing mechanism comprises a cylinder arranged in the breaker body, a piston disc arranged in the cylinder in a sealing sliding manner, and a first one-way valve and a second one-way valve arranged on the cylinder, wherein the second one-way valve is connected with the flat nozzle spray head through a transmission pipeline, and a movable connection structure is arranged between the piston disc and the first pulley.
As still further aspects of the invention: the movable connection structure comprises a guide rail arranged in the circuit breaker body, a transmission plate which is in sliding fit with the guide rail, and a fixed rod which is fixedly connected with the transmission plate and the piston disc, wherein the fixed rod is in sealing sliding connection with the cylinder, a sliding groove is formed in the side part of the transmission plate, and the first pulley is in rolling fit with the sliding groove.
As still further aspects of the invention: the switching-on mechanism comprises a guide plate arranged in the circuit breaker body, a connecting arm connected with the guide plate in a sliding way and a driven plate fixed with the connecting arm, the side part of the connecting arm is also fixed with a switching-on column connected with the circuit breaker body in a sealing sliding way, and the switching-on column is provided with a defect part;
The guide cylinder is fixedly connected with a driving column, the driven plate is provided with a through groove matched with the driving column, the driving column penetrates through the through groove and is in sliding connection with the driven plate, and the through groove comprises a first straight section, an inclined section and a second straight section which are connected.
A high-voltage power distribution cabinet comprises the emergency protection device of the circuit breaker.
Compared with the prior art, the invention has the beneficial effects that: the invention has novel design, the blowing and arc extinguishing are carried out in a mechanical interlocking mode, an arc extinguishing grid sheet is not required to be arranged in the circuit breaker, in the separation process of the lever and the connector sheet, the rotating shaft of the lever can drive the traversing mechanism to move through the follow-up mechanism, so that the flat nozzle spray head is driven to sequentially execute primary blowing action and secondary blowing action, the two blowing actions can respectively play the roles of arc extinguishing and heat dissipation, and through the mutual matching between the mechanisms and the components, the circuit breaker body can be fully protected when the emergency control condition occurs in the circuit breaker body, and the corresponding potential safety hazard is avoided.
Drawings
Fig. 1 is a schematic structural view of an embodiment of an emergency protection device for a circuit breaker.
Fig. 2 is a schematic view of an embodiment of an emergency protection device for a circuit breaker from another angle.
Fig. 3 is a schematic view of an embodiment of an emergency protection device for a circuit breaker in a further angle.
Fig. 4 is an enlarged view of the structure at a in fig. 3.
Fig. 5 is an enlarged view of the structure at B in fig. 3.
Fig. 6 is a schematic diagram showing a connection state of the follower mechanism and the traverse mechanism in an embodiment of the emergency protection apparatus for a circuit breaker.
Fig. 7 is a structural exploded view of a blowing mechanism in one embodiment of the emergency protective device for a circuit breaker.
Fig. 8 is a schematic view of the structure of fig. 7 at another angle.
In the figure: 1. a circuit breaker body; 2. a lever; 3. a first gear; 4. a second gear; 5. a disc; 6. a cross bar; 7. a slide block; 8. a guide cylinder; 9. a column; 10. a boss; 11. a cylindrical spring; 12. a first pulley; 13. a drive plate; 1301. a chute; 14. a guide rail; 15. a second pulley; 16. a limiting plate; 17. a limit protrusion; 1701. a first planar surface; 1702. a second plane; 1703. a first inclined surface; 1704. a second inclined surface; 1705. a third planar surface; 1706. a fourth plane; 18. a movable member; 19. a connecting rod; 20. a cylinder; 21. a first one-way valve; 22. a second one-way valve; 23. a piston disc; 24. a fixed rod piece; 25. a flat nozzle spray head; 26. a drive column; 27. a driven plate; 2701. a first straight section; 2702. an inclined section; 2703. a second straight section; 28. a guide plate; 29. a connecting arm; 30. a conductive column; 3001. a defective portion; 31. connector wafers.
Detailed Description
The following description of the embodiments of the present invention 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 invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In addition, an element in the present disclosure may be referred to as being "fixed" or "disposed" on another element or being directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Referring to fig. 1 to 8, in an embodiment of the present invention, an emergency protection device for a circuit breaker is disposed in a circuit breaker body 1, and includes:
The transverse rod 6 is fixedly arranged in the breaker body 1, a transverse moving mechanism is movably arranged on the transverse rod 6, the transverse moving mechanism is connected with a follow-up mechanism arranged in the breaker body 1, the follow-up mechanism is connected with a rotating shaft of a lever 2 in the breaker body 1, and when the lever 2 is separated from a connector piece 31 in the breaker body 1, the follow-up mechanism can drive the transverse moving mechanism to move along the length direction of the transverse rod 6;
The air blowing mechanism is connected with the traversing mechanism and is connected with a flat nozzle spray head 25 arranged in the breaker body 1, and the air blowing mechanism can promote the flat nozzle spray head 25 to sequentially execute primary air blowing action and secondary air blowing action in the moving process of the traversing mechanism;
The conducting mechanism is arranged in the breaker body 1 and matched with the traversing mechanism, and the conducting mechanism is triggered when the flat nozzle spray head 25 executes secondary blowing action and can be used for communicating the breaker body 1 with the outside.
It should be noted that, the lever 2 and the connector piece 31 are applied in the prior art, the lever 2 deflects when a circuit is in a problem and is separated from the connector piece 31 to disconnect the circuit, and the control mechanism (prior art) connected to the lever 2 is not described in detail.
In practical use, when a circuit is in trouble, the control mechanism will cause the lever 2 to deflect so as to separate the lever 2 from the connector piece 31, in this process, the rotation shaft of the lever 2 will drive the follow-up mechanism to move, the follow-up mechanism will drive the traversing mechanism to move along the length direction of the cross bar 6, in the previous stage of movement of the traversing mechanism, the air blowing mechanism will perform a first air blowing action, that is, the flat nozzle spray 25 blows air between the lever 2 and the connector piece 31, the forced flow and cooling effect of air are utilized to achieve arc extinction, an effective safety protection effect is provided for the breaker body 1, in the latter stage of movement of the traversing mechanism, the air blowing mechanism will perform a second air blowing action, meanwhile, the traversing mechanism cooperates with the conducting mechanism, the conducting mechanism communicates the breaker body 1 with the outside, in addition, under the forced flow of air, part of the high temperature air in the breaker body 1 will be blown out of the body to the outside of the breaker body 1, thereby achieving the purpose of protecting the heat dissipation part of the breaker body 1.
In summary, through the mutual cooperation between each mechanism and part, in the separation process of lever 2 with connector piece 31, the axis of rotation of lever 2 can be through follow-up mechanism drives sideslip mechanism carries out the motion, thereby impels flat nozzle shower nozzle 25 carries out once and blows action with the secondary in succession, and the effect of arc extinction and heat dissipation can be played respectively to twice blows, thereby when circuit breaker body 1 takes place emergency control situation, can provide the protection of safety hazard that is careful for circuit breaker body 1, avoids corresponding potential safety hazard.
Referring to fig. 6 again, the follower mechanism includes a disc 5 rotatably mounted in the breaker body 1, a slider 7 slidably disposed on the cross bar 6, and a connecting rod 19 connecting the slider 7 and the disc 5, the traversing mechanism is mounted on the slider 7, one end of the connecting rod 19 is rotatably connected with the slider 7, and the other end is rotatably connected with the eccentric position of the disc 5. The lever 2 and the rotating shaft of the disc 5 are respectively provided with a first gear 3 and a second gear 4, and the first gear 3 is meshed with the second gear 4.
It should be noted that the diameter of the first gear 3 is greater than the diameter of the second gear 4, so as to amplify the deflection action of the lever 2;
when the lever 2 deflects, the rotation shaft of the lever drives the disc 5 to rotate 180 degrees through the first gear 3 and the second gear 4, and correspondingly, the disc 5 drives the sliding block 7 to slide on the cross rod 6 through the connecting rod 19, so that the sliding block 7 drives the traversing mechanism to move along the length direction of the cross rod 6, and the air blowing mechanism sequentially executes primary air blowing action and secondary air blowing action.
Referring to fig. 2 and 8 again, the traversing mechanism includes two sets of elastic sleeve structures disposed on the slider 7, and a first pulley 12 and a second pulley 15 disposed at two ends of the elastic sleeve structures, where the first pulley 12 is connected with the blowing mechanism, and the second pulley 15 is connected with a guiding and limiting assembly disposed in the breaker body 1. The elastic sleeving structure comprises a guide cylinder 8 arranged on the sliding block 7, an upright post 9 sleeved with the guide cylinder 8 in a sliding mode and a cylindrical spring 11 arranged in the guide cylinder 8, one end of the cylindrical spring 11 is connected with the inner wall of the guide cylinder 8, the other end of the cylindrical spring is connected with a boss 10 arranged on the upright post 9, and the first pulley 12 and the second pulley 15 are respectively arranged at two ends of the upright post 9.
The guiding limiting assembly comprises a limiting plate 16 arranged in the breaker body 1 and a limiting protrusion 17 arranged in the limiting plate 16, the second pulley 15 is in butt joint with the limiting protrusion 17, a first straight surface 1701, a second straight surface 1702, a first inclined surface 1703 and a second inclined surface 1704 are formed on the limiting protrusion 17, a groove body is arranged on one side, away from the first straight surface 1701, of the second inclined surface 1704, a movable part 18 capable of rotating in one direction is hinged in the groove body, and the movable part 18 is connected with an elastic piece arranged in the groove body.
Under the normal working condition (i.e. the state shown in the drawing) of the circuit breaker, the second pulley 15 abuts against the first flat surface 1701, when the lever 2 deflects, namely the sliding block 7 drives the guide cylinder 8 to move along the length direction of the cross rod 6, the second pulley 15 rolls on the first flat surface 1701 towards the second flat surface 1702, after the second pulley 15 is separated from the second flat surface 1702, the cylindrical spring 11 rebounds, the second pulley 15 is transferred onto the second flat surface 1702 from the first flat surface 1701, in the process, the upright post 9 drives the first pulley 12 to move upwards, so that the first pulley 12 drives the blowing mechanism to blow gas between the lever 2 and the connector piece 31 through the flat nozzle spray head 25, and an arc extinguishing effect is achieved;
subsequently, the second pulley 15 rolls along the second straight plane 1702 toward the first inclined plane 1703, the second pulley 15 is allowed to yield when rolling on the first inclined plane 1703, and accordingly, the upright 9 drives the first pulley 12 to move downwards, during which the blowing mechanism absorbs gas, and the cylindrical spring 11 is compressed;
after the second pulley 15 is separated from the first inclined surface 1703, under the rebound action of the cylindrical spring 11, the upright post 9 drives the second pulley 15 to move upwards again (so that the second pulley 15 is flush with the movable piece 18), and the air blowing mechanism blows air for the second time to blow out hot air generated by electric arc in the breaker body 1, so as to achieve a heat dissipation effect;
It should be further added that the other two surfaces on the limiting protrusion 17 are defined as a third flat surface 1705 and a fourth flat surface 1706, respectively, so as to ensure that the lever 2 can smoothly complete the whole deflection action, the distance between the third flat surface 1705 and the inner wall of the limiting plate 16 should be larger than the diameter of the second pulley 15, and after the deflection process of the lever 2 is finished, the second pulley 15 abuts against the fourth flat surface 1706 and is staggered with the third flat surface 1705;
After the maintenance of the problem in the circuit is completed, the staff drives the lever 2 to reset through the manual switch, in this process, the disc 5 rotates 180 ° reversely, the second pulley 15 rolls along the fourth plane 1706 towards the movable member 18, after the second pulley 15 contacts with the movable member 18, the movable member 18 is caused to deflect, until the second pulley 15 passes over the movable member 18, the movable member 18 is reset through the elastic sheet, finally, the second pulley 15 rolls along the movable member 18 and the second inclined plane 1704 and yields, the upright post 9 moves downwards, the first pulley 12 drives the blowing mechanism to absorb gas for being used when the blowing mechanism performs a blowing action (for arc extinction), and after the second pulley 15 resumes the abutting state with the first plane 1701, the cylindrical spring 11 resumes the initial compression state.
Referring to fig. 2, 7 and 8 again, the blowing mechanism includes a cylinder 20 disposed in the breaker body 1, a piston disc 23 sealingly and slidably disposed in the cylinder 20, and a first check valve 21 and a second check valve 22 disposed on the cylinder 20, where the second check valve 22 is connected with the flat nozzle spray head 25 through a transmission pipeline, and a movable connection structure is disposed between the piston disc 23 and the first pulley 12. The movable connection structure comprises a guide rail 14 arranged in the breaker body 1, a transmission plate 13 in sliding fit with the guide rail 14, and a fixed rod piece 24 fixedly connecting the transmission plate 13 with the piston disc 23, wherein the fixed rod piece 24 is in sealing sliding connection with the cylinder 20, a sliding groove 1301 is formed in the side part of the transmission plate 13, and the first pulley 12 is in rolling fit with the sliding groove 1301.
When the sliding block 7 moves along the cross bar 6, the first pulley 12 rolls in the sliding groove 1301, when the cylindrical spring 11 rebounds, the first pulley 12 slides upwards, and then the first pulley 12 drives the transmission plate 13 to move upwards along the guide rail 14, at this time, the first one-way valve 21 is not conducted, the second one-way valve 22 is conducted, so that the gas stored in the cylinder 20 can be pumped out and blown to the gap between the lever 2 and the connector piece 31 through the flat nozzle spray head 25;
Conversely, during the compression process of the cylindrical spring 11, the first pulley 12 drives the driving plate 13 to slide down along the guiding rail 14, at this time, the first check valve 21 is conducted, the second check valve 22 is not conducted, and thus, the external air is pumped into the cylinder 20.
Referring to fig. 4 and 5 again, the conducting mechanism includes a guide plate 28 disposed in the breaker body 1, a connecting arm 29 slidably connected with the guide plate 28, and a driven plate 27 fixed with the connecting arm 29, a conducting post 30 slidably connected with the breaker body 1 in a sealing manner is further fixed on a side portion of the connecting arm 29, and a defect portion 3001 is disposed on the conducting post 30. The guide cylinder 8 is fixedly connected with a driving column 26, the driven plate 27 is provided with a through groove adapted to the driving column 26, the driving column 26 penetrates through the through groove and is slidably connected with the driven plate 27, and the through groove comprises a first straight section 2701, an inclined section 2702 and a second straight section 2703 which are connected.
When the sliding block 7 moves on the cross bar 6, the guide cylinder 8 drives the driving column 26 to move together, the driving column 26 is in sliding fit with the driven plate 27 in the moving process of the inclined section 2702, so that the driven plate 27 moves upwards, accordingly, the defect portion 3001 of the conducting column 30 leaks out of the breaker body 1, and the breaker body 1 is communicated with the outside, so that after the driving column 26 enters the second straight section 2703, namely, the second pulley 15 is separated from the first inclined surface 1703, the flat nozzle spray head 25 performs secondary air blowing, so that hot air generated by electric arc can be blown out of the breaker body 1, and the temperature in the breaker body 1 is prevented from being too high.
As another embodiment of the present invention, a high-voltage power distribution cabinet is further provided, where the high-voltage power distribution cabinet includes the emergency protection device for a circuit breaker, and in the process of separating the lever 2 from the connector piece 31, the rotation shaft of the lever 2 can drive the traversing mechanism to move through the follower mechanism, so as to cause the flat nozzle spray head 25 to sequentially perform a primary blowing action and a secondary blowing action, and the two blowing actions can respectively perform arc extinguishing and heat dissipation effects, so that when the emergency control condition occurs in the circuit breaker body 1, a complete protection can be provided for the circuit breaker body 1, corresponding potential safety hazards are avoided, and the safety performance of the power distribution cabinet is significantly improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (9)
1. An emergency protection device of a circuit breaker is arranged in a circuit breaker body (1);
characterized by comprising the following steps:
The transverse rod (6) is fixedly arranged in the breaker body (1), a transverse moving mechanism is movably arranged on the transverse rod (6), the transverse moving mechanism is connected with a follow-up mechanism arranged in the breaker body (1), the follow-up mechanism is connected with a rotating shaft of a lever (2) in the breaker body (1), and when the lever (2) is separated from a connector piece (31) in the breaker body (1), the follow-up mechanism can drive the transverse moving mechanism to move along the length direction of the transverse rod (6);
The air blowing mechanism is connected with the transverse moving mechanism and is connected with a flat nozzle spray head (25) arranged in the circuit breaker body (1), and the air blowing mechanism can promote the flat nozzle spray head (25) to sequentially execute primary air blowing action and secondary air blowing action in the moving process of the transverse moving mechanism;
the conduction mechanism is arranged in the breaker body (1) and matched with the transverse moving mechanism, the conduction mechanism is triggered when the flat nozzle spray head (25) executes secondary blowing action, and the breaker body (1) can be communicated with the outside.
2. The emergency protection device for a circuit breaker according to claim 1, wherein the follower mechanism comprises a disc (5) rotatably mounted in the circuit breaker body (1), a slide block (7) slidably arranged on the cross bar (6), and a connecting rod (19) connecting the slide block (7) and the disc (5), the traversing mechanism is mounted on the slide block (7), one end of the connecting rod (19) is rotatably connected with the slide block (7), and the other end is rotatably connected with an eccentric position of the disc (5);
The lever (2) and the rotating shaft of the disc (5) are respectively provided with a first gear (3) and a second gear (4), and the first gear (3) is meshed with the second gear (4).
3. The emergency protection device of a circuit breaker according to claim 2, wherein the traversing mechanism comprises two groups of elastic sleeve structures arranged on the sliding block (7), and a first pulley (12) and a second pulley (15) respectively arranged at two ends of the elastic sleeve structures, the first pulley (12) is connected with the blowing mechanism, and the second pulley (15) is connected with a guiding limiting assembly arranged in the circuit breaker body (1).
4. The emergency protection device for a circuit breaker according to claim 3, wherein the elastic sheathing structure comprises a guide cylinder (8) mounted on the sliding block (7), a column (9) slidingly sheathing the guide cylinder (8) and a cylindrical spring (11) arranged inside the guide cylinder (8), one end of the cylindrical spring (11) is connected with the inner wall of the guide cylinder (8), the other end is connected with a boss (10) arranged on the column (9), and the first pulley (12) and the second pulley (15) are respectively arranged at two ends of the column (9).
5. The emergency protection device for the circuit breaker according to claim 4, wherein the guiding limiting assembly comprises a limiting plate (16) arranged in the circuit breaker body (1) and a limiting protrusion (17) arranged in the limiting plate (16), the second pulley (15) is abutted to the limiting protrusion (17), a first flat surface (1701), a second flat surface (1702), a first inclined surface (1703) and a second inclined surface (1704) are formed on the limiting protrusion (17), a groove body is arranged on one side, away from the first flat surface (1701), of the second inclined surface (1704), a movable part (18) capable of rotating unidirectionally is hinged in the groove body, and the movable part (18) is connected with an elastic piece arranged in the groove body.
6. The emergency protection device for the circuit breaker according to claim 4, wherein the blowing mechanism comprises a cylinder (20) arranged in the circuit breaker body (1), a piston disc (23) arranged in the cylinder (20) in a sealing sliding manner, and a first one-way valve (21) and a second one-way valve (22) arranged on the cylinder (20), the second one-way valve (22) is connected with the flat nozzle spray head (25) through a transmission pipeline, and a movable connection structure is arranged between the piston disc (23) and the first pulley (12).
7. The emergency protection device for a circuit breaker according to claim 6, wherein the movable connection structure comprises a guide rail (14) arranged in the circuit breaker body (1), a transmission plate (13) in sliding fit with the guide rail (14), and a fixed rod (24) fixedly connecting the transmission plate (13) and the piston disc (23), the fixed rod (24) is in sealing sliding connection with the cylinder (20), a sliding groove (1301) is arranged at the side part of the transmission plate (13), and the first pulley (12) is in rolling fit with the sliding groove (1301).
8. The emergency protection device for a circuit breaker according to claim 4, wherein the conducting mechanism comprises a guide plate (28) arranged in the circuit breaker body (1), a connecting arm (29) connected with the guide plate (28) in a sliding manner, and a driven plate (27) fixed with the connecting arm (29), a conducting column (30) connected with the circuit breaker body (1) in a sealing sliding manner is further fixed on the side part of the connecting arm (29), and a defect part (3001) is arranged on the conducting column (30);
The guide cylinder (8) is fixedly connected with a driving column (26), a through groove matched with the driving column (26) is formed in the driven plate (27), the driving column (26) penetrates through the through groove and is in sliding connection with the driven plate (27), and the through groove comprises a first straight section (2701), an inclined section (2702) and a second straight section (2703) which are connected.
9. A high voltage power distribution cabinet comprising a circuit breaker emergency protection device according to any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410574266.0A CN118173413A (en) | 2024-05-10 | 2024-05-10 | Emergency protection device for circuit breaker and high-voltage power distribution cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410574266.0A CN118173413A (en) | 2024-05-10 | 2024-05-10 | Emergency protection device for circuit breaker and high-voltage power distribution cabinet |
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| CN118173413A true CN118173413A (en) | 2024-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202410574266.0A Pending CN118173413A (en) | 2024-05-10 | 2024-05-10 | Emergency protection device for circuit breaker and high-voltage power distribution cabinet |
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| CN (1) | CN118173413A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0483840A2 (en) * | 1990-11-02 | 1992-05-06 | Asea Brown Boveri Ab | High-voltage circuit breaker |
| JPH10269913A (en) * | 1997-03-25 | 1998-10-09 | Toshiba Corp | Puffer type gas-blast circuit-breaker |
| CN207367873U (en) * | 2017-07-07 | 2018-05-15 | 河北电力装备有限公司 | A kind of piston gas-pressing formula on-load switch |
| CN219497700U (en) * | 2023-04-27 | 2023-08-08 | 云南电网有限责任公司昆明供电局 | Overload protection device for low-voltage circuit breaker |
| CN117153587A (en) * | 2023-09-19 | 2023-12-01 | 宁波汉达威机电科技有限公司 | Electrical contact assembly and use method thereof |
-
2024
- 2024-05-10 CN CN202410574266.0A patent/CN118173413A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0483840A2 (en) * | 1990-11-02 | 1992-05-06 | Asea Brown Boveri Ab | High-voltage circuit breaker |
| JPH10269913A (en) * | 1997-03-25 | 1998-10-09 | Toshiba Corp | Puffer type gas-blast circuit-breaker |
| CN207367873U (en) * | 2017-07-07 | 2018-05-15 | 河北电力装备有限公司 | A kind of piston gas-pressing formula on-load switch |
| CN219497700U (en) * | 2023-04-27 | 2023-08-08 | 云南电网有限责任公司昆明供电局 | Overload protection device for low-voltage circuit breaker |
| CN117153587A (en) * | 2023-09-19 | 2023-12-01 | 宁波汉达威机电科技有限公司 | Electrical contact assembly and use method thereof |
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