CN117766350B - Quick breaking circuit breaker - Google Patents
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- CN117766350B CN117766350B CN202310384714.6A CN202310384714A CN117766350B CN 117766350 B CN117766350 B CN 117766350B CN 202310384714 A CN202310384714 A CN 202310384714A CN 117766350 B CN117766350 B CN 117766350B
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Abstract
The invention relates to a quick breaking circuit breaker which comprises a main shaft, a spring operating mechanism, a permanent magnet operating mechanism and a breaking and closing retaining mechanism, wherein the main shaft is respectively connected with three insulating pull rods of the circuit breaker through three groups of triangular connecting plates which are arranged in the same direction, the spring operating mechanism comprises a closing component connected with the main shaft and a closing spring arranged on one side of the closing component, the closing component can store energy for the closing spring to drive the circuit breaker to close, an acting rod of the permanent magnet operating mechanism is connected with the main shaft through a connecting plate to drive the circuit breaker to break the brake, the breaking and closing retaining mechanism comprises a retaining spring, and the moment of the retaining spring and the moment generated by the main shaft are balanced mutually to retain the closing or breaking state of the circuit breaker. The spring operating mechanism and the permanent magnet operating mechanism are mutually independent, are not limited by time and position, reduce the possibility of the circuit breaker to operate in a null mode, and improve the stability, reliability and rapidity of the action.
Description
Technical Field
The invention belongs to the technical field of circuit breakers of high-voltage switch equipment, and particularly relates to a quick breaking circuit breaker.
Background
The high-voltage switch equipment is key equipment for power transmission and control in a power grid, and stable, reliable and rapid switching-on and switching-off are basic functions of the high-voltage switch equipment. Currently, outdoor circuit breakers on the market are basically classified into a spring operation configuration and a permanent magnet operation configuration, wherein the permanent magnet operation configuration circuit breaker must be installed with a spring operation mechanism for manual operation in a mechanism box according to actual demands of users.
In the breaker operated by the spring mechanism, the switching-on operation is to instantly release the energy of a switching-on spring stored in advance in the breaker mechanism by the action of a switching-on electromagnet and to switch on and hold the energy by an internal part, so as to realize a switching-on process, and the switching-off operation is to release and trip a holding part by the action of a switching-off electromagnet, so as to realize a switching-off process. In the breaker operated by the permanent magnet mechanism, the switching-on operation is to instantly electrify the coil of the permanent magnet mechanism to generate attraction force so as to enable the movable iron core to move and drive the main shaft to move to finish the switching-on process, and the switching-off operation is to electrify the coil of the permanent magnet in the opposite direction to generate repulsive force to finish the switching-off process under the superposition of switching-off spring force. Because the manual switching-on function cannot be realized by the independent permanent magnet mechanism, in the actual use process, a spring operating mechanism is required to be configured in the permanent magnet mechanism operating type breaker mechanism so as to realize the manual switching-on and switching-off adopted by the field due to power failure.
With the gradual popularization of the active power distribution network, the time requirement of the power grid for judging and solving the short-circuit fault is as high as possible, and the time requirement of the circuit breaker on off is as high as possible. Because the structural principle of the spring mechanism limits, the opening and closing time of the spring mechanism is far longer than that of a permanent magnet mechanism breaker, and the permanent magnet mechanism breaker capable of rapidly opening and closing provides powerful hardware support for multi-pole differential protection of a power grid. However, due to the requirement of manual operation, the permanent magnet mechanism circuit breaker must be provided with a spring operating mechanism, when in manual operation, the spring operating mechanism is utilized to realize closing operation, the permanent magnet mechanism realizes closing holding, at the moment, the two mechanisms are mutually matched in time and position, if the two mechanisms are improperly matched, the closing operation can not be kept during manual closing operation or the electric opening operation can not be carried out after electric closing operation.
Disclosure of Invention
The invention aims to provide a quick breaking circuit breaker so as to solve the problem that quick breaking and closing cannot be realized.
The quick breaking circuit breaker is realized by the following steps:
A quick breaking circuit breaker includes
The main shaft is connected with three insulating pull rods of the circuit breaker through three groups of triangular connecting plates which are arranged in the same direction respectively;
The spring operating mechanism comprises a closing component connected with the main shaft and a closing spring arranged on one side of the closing component, and the closing component can store energy for the closing spring to drive the breaker to close;
The action rod of the permanent magnet operating mechanism is connected with the main shaft through a connecting plate so as to drive the breaker to break;
the opening and closing holding mechanism comprises a holding spring, wherein the moment of the holding spring and the moment generated by the main shaft are balanced to each other, so that the closing or opening state of the circuit breaker is maintained.
Further, the novel U-shaped groove plate comprises a bottom plate fixing mechanism, wherein the bottom plate fixing mechanism comprises a bottom plate, a U-shaped groove plate I and a U-shaped groove plate II which are arranged on the bottom plate side by side, and fixing plates which are arranged in pairs and are arranged between the two U-shaped groove plates, and three groups of triangular yoke plates are respectively connected with the U-shaped groove plate I, U-shaped groove plate II and the fixing plates.
Further, the closing component comprises an energy storage component and a closing action component;
The energy storage assembly comprises a large gear and a small gear which are meshed, a manual closing handle shaft which rotates synchronously with the small gear is arranged in the center of the small gear, the center of the large gear is an energy storage large shaft which rotates synchronously with the large gear, and one end of the energy storage large shaft is connected with one end of a closing spring through an energy storage crank arm;
The switching-on action assembly comprises a cam which is arranged on the energy storage large shaft and can synchronously rotate with the energy storage large shaft, and an output crank arm which is matched with the cam, and the output crank arm is connected with the main shaft.
Further, the permanent magnet operating mechanism comprises a fixed block, an iron yoke, a static iron core, a magnet, a movable iron core and a coil, wherein the iron yoke and the static iron core are fixed on the fixed block, the magnet is circumferentially arranged in a circular gap between the iron yoke and the static iron core, the coil is wound in a coil groove on the opposite side of the static iron core and the movable iron core, and the action rod and the movable iron core are fixedly connected and then pass through the static iron core and the fixed block and can move along the axis of the action rod.
Further, a notch is formed in the end portion of the action rod, and the connecting plate is hinged in the notch.
Further, the fixed block is fixed on the bottom plate.
Further, the opening and closing holding mechanism further comprises a connecting plate, a guide sleeve is arranged in the holding spring, a spring end cover positioned at the top of the holding spring is arranged at the upper end of the guide sleeve, and the spring end cover is connected with the main shaft through the connecting plate.
Further, the retaining spring is obliquely arranged;
When the switch is in the switch-off state, the upper end of the holding spring is inclined towards the direction of the switch-on spring;
and in a closing state, the upper end of the holding spring is inclined towards a direction away from the closing spring.
Further, the upper end of the connecting plate is hinged with the main shaft, the lower end of the connecting plate is hinged with the spring end cover, and the middle part of the connecting plate is hinged with the fixed plate;
the bottom of the guide sleeve is hinged with a spring base arranged on the bottom plate.
Further, the switching-on and switching-off retaining mechanism is further provided with a manual switching-off assembly, a switching-off linkage plate I, a switching-off linkage plate II and a manual switching-off handle of the manual switching-off assembly are arranged on the switching-off retaining mechanism, one end of the switching-off linkage plate I is connected with the linkage plate, the other end of the switching-off linkage plate I is connected with one end of the switching-off linkage plate II, and the other end of the switching-off linkage plate II is connected with a manual switching-off handle shaft.
After the technical scheme is adopted, the invention has the following beneficial effects:
(1) The spring operating mechanism is used for executing switching-on operation, the permanent magnet operating mechanism is used for executing switching-off operation, the spring operating mechanism and the permanent magnet operating mechanism are mutually independent and are not constrained by time and position, the possibility of idle operation of the circuit breaker is reduced, and the stability, reliability and rapidity of action are improved;
(2) According to the invention, through the arrangement of the opening and closing maintaining mechanism, the states of closing and opening can be effectively maintained.
Drawings
The invention will be further described with reference to the drawings and examples.
Fig. 1 is a structural view of a quick breaking circuit breaker (in a breaking state) according to a preferred embodiment of the present invention;
fig. 2 is a block diagram of a quick breaking circuit breaker (in a closed state) according to a preferred embodiment of the present invention;
Fig. 3 is a structural view of a spring operating mechanism of the quick breaking circuit breaker according to the preferred embodiment of the present invention;
fig. 4 is a top view of a spring operator of the quick breaking circuit breaker according to a preferred embodiment of the present invention;
FIG. 5 is a cross-sectional view taken along the direction A-A in FIG. 4;
fig. 6 is a structural view of a switching-on/off holding mechanism part of the quick breaking circuit breaker (in a switching-off state) according to the preferred embodiment of the present invention;
Fig. 7 is a block diagram of a part of a breaking and closing maintaining mechanism of a quick breaking circuit breaker (in a closing state) according to a preferred embodiment of the present invention;
fig. 8 is an internal structural view of a permanent magnet operating mechanism of a quick breaking circuit breaker according to a preferred embodiment of the present invention;
fig. 9 is a structural view of a bottom plate fixing mechanism of a quick breaking circuit breaker according to a preferred embodiment of the present invention;
In the figure, a main shaft 1, a spring operating mechanism 2, a closing spring 21, a supporting plate 22, a large gear 23, a small gear 24, a manual closing handle 25, an energy storage large shaft 26, an energy storage crank arm 27, a hanging spring shaft 28, a manual closing knob 29, an output crank arm 210, a cam 211, an energy storage motor 212, an electromagnet 213, a baffle 214, a tripping half shaft 215, a closing pawl 216, a roller 217, a permanent magnet operating mechanism 3, an action rod 31, a connecting plate 32, an iron yoke 33, a static iron core 34, a magnet 35, a movable iron core 36, a fixed block 37, a notch 38, a coil 39, an opening and closing retaining mechanism 4, a retaining spring 41, a connecting plate 42, a guide sleeve 43, a spring end cover 44, an opening and closing connecting plate I45, an opening and closing connecting plate II46, a manual opening and closing handle 47, a triangular connecting plate 5, an insulating pull rod 6, a bottom plate fixing mechanism 7, a bottom plate 71, a U-shaped groove plate I72, a U-shaped groove plate II73, a fixing plate 74, a mounting block 75 and a spring base 76 are shown.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
As shown in figures 1-9, the quick breaking circuit breaker comprises a main shaft 1, a spring operating mechanism 2, a permanent magnet operating mechanism 3 and a breaking and switching-on retaining mechanism 4, wherein the main shaft 1 is respectively connected with three insulating pull rods 6 of the circuit breaker through three groups of triangular connecting plates 5 which are arranged in the same direction, the spring operating mechanism 2 comprises a switching-on assembly connected with the main shaft 1 and a switching-on spring 21 arranged on one side of the switching-on assembly, the switching-on assembly can store energy for the switching-on spring 21 to drive the circuit breaker to switch on, an action rod 31 of the permanent magnet operating mechanism 3 is connected with the main shaft 1 through a connecting plate 32 to drive the circuit breaker to switch off, the breaking and switching-on retaining mechanism 4 comprises a retaining spring 41, and the moment of the retaining spring 41 and the moment generated by the main shaft 1 are balanced mutually to enable the switching-on or switching-off state of the circuit breaker to be retained.
In order to facilitate the installation of the spring operating mechanism 2, the permanent magnet operating mechanism 3 and the opening and closing holding mechanism 4, the circuit breaker further comprises a bottom plate fixing mechanism 7, the bottom plate fixing mechanism 7 comprises a bottom plate 71, a U-shaped groove plate I72 and a U-shaped groove plate II73 which are installed on the bottom plate 71 side by side, and a fixing plate 74 which is positioned between the two U-shaped groove plates and is arranged in pairs, and three groups of triangular connecting plates 5 are respectively connected with the U-shaped groove plate I72, the U-shaped groove plate II73 and the fixing plate 74.
In this embodiment, the side of the spring operating mechanism 2 is left, that is, the surface of the closing spring 21 is the front side, so that the spring operating mechanism 2, the opening/closing holding mechanism 4 and the permanent magnet operating mechanism 3 are sequentially arranged on the bottom plate 71 from left to right, and the arrangement manner is parallel to the axial direction of the main shaft 1.
The U-shaped slot board I72 is disposed in the spring operating mechanism 2, the opening and closing retaining mechanism 4 is disposed at the fixing board 74, the permanent magnetic operating mechanism 3 is disposed between the fixing board 74 and the U-shaped slot board II73, accordingly, the combination of the first group of triangle link boards 5 and the insulating pull rod 6 is disposed in the spring operating mechanism 2, the combination of the second group of triangle link boards 5 and the insulating pull rod 6 is disposed in the opening and closing retaining mechanism 4, and the combination of the third group of triangle link boards 5 and the insulating pull rod 6 is disposed on the right side of the permanent magnetic operating mechanism 3.
In order to drive the lifting of the insulating pull rod 6 through the movement of the main shaft 1 so as to realize opening or closing operation, the upper hole of the triangular yoke plate 5 is connected with the main shaft 1, the left lower hole is connected with the corresponding insulating pull rod 6, and the right lower hole is connected with the corresponding U-shaped groove plate or fixing plate 74.
Specifically, the triangular yoke plates 5 are provided in pairs and are provided on both sides of the spindle 1, respectively.
The triangular yoke plate 5 has a triangular structure, and each corner of the triangular yoke plate is provided with a hole, wherein the upper hole of the triangular yoke plate 5 is hinged with the main shaft 1 through a pin shaft, the left lower hole is hinged with the insulating pull rod 6 through a pin shaft, and the right lower hole is hinged with the corresponding U-shaped groove plate or fixing plate 74 through a pin shaft.
The bottom plate 71 is provided with through holes matched with the corresponding triangular yoke plates 5, and the insulating pull rods 6 penetrate through the through holes to be connected with the corresponding triangular yoke plates 5.
In order to realize the switching-on operation, the switching-on subassembly includes energy storage subassembly and switching-on action subassembly.
The energy storage assembly comprises a large gear 23 and a small gear 24 which are meshed, a manual closing handle shaft 25 which rotates synchronously with the small gear 24 is arranged at the center of the small gear 24, an energy storage large shaft 26 which rotates synchronously with the large gear 23 is arranged at the center of the large gear 23, and one end of the energy storage large shaft 26 is connected with one end of the closing spring 21 through an energy storage crank arm 27.
The energy storage process comprises manual energy storage and electric energy storage.
For manual energy storage, namely, the manual closing handle shaft 25 is rotated, the manual closing handle shaft drives the pinion 24 to rotate, the large gear 23 is driven to rotate through the engagement of the pinion 24 and the large gear 23, the large energy storage shaft 26 is driven to synchronously rotate by the rotation of the large gear 23, and then the closing spring 21 is pulled through the energy storage crank arm 27 to carry out stretching energy storage.
Preferably, in order to facilitate rotation of the manual closing handle 25, one end thereof is provided with a manual closing knob 29.
For electric energy storage, an energy storage motor 212 is arranged at one end of the manual closing handle shaft 25, the energy storage motor 212 is electrified to drive the manual closing handle shaft 25 and the pinion 24 to rotate, and then the energy storage operation of the closing spring 21 is realized through the transmission of the large gear 23, the energy storage large shaft 26 and the energy storage crank arm 27.
In order to implement a closing operation after the energy storage of the closing spring 21 is completed, the closing action assembly includes a cam 211 mounted on the energy storage large shaft 26 and capable of rotating synchronously therewith, and an output crank arm 210 matched with the cam 211, wherein the output crank arm 210 is connected with the main shaft 1.
Specifically, the closing action assembly further includes an electromagnet 213, a baffle 214 matched with an iron core of the electromagnet 213, a trip half shaft 215 connected with the baffle 214 and rotating synchronously, a closing pawl 216 matched with the trip half shaft 215, and a roller 217 assembled on the energy storage large shaft 26 and matched with the closing pawl 216.
When the switching-on operation is performed, the electromagnet 213 is electrified, the iron core of the electromagnet stretches out and pushes the baffle 214 to rotate, the baffle 214 drives the tripping half shaft 215 to rotate, after the tripping half shaft 215 rotates at the angle of rotation movement, the switching-on pawl 216 rotates, one end of the switching-on pawl, which is matched with the roller 217, rotates towards the direction away from the roller 217, at the moment, the roller 217 loses the blocking, the switching-on spring 21 releases energy to drive the cam 211 to rotate clockwise, so that the output crank arm 210 is pushed to rotate anticlockwise, the output crank arm 210 drives the main shaft 1 to move leftwards, and three groups of triangular link plates 5 respectively move anticlockwise around the lower right holes of the main shaft 1 while the main shaft 1 moves leftwards, and three insulating pull rods 6 connected with the three groups of triangular link plates vertically move downwards to realize switching-on.
In addition to the shutter 214 being able to be pushed to rotate by energizing the electromagnet 213, the iron core of the electromagnet 213 may be manually pushed to effect rotation of the shutter 214.
In order to install the energy storage assembly and the closing action assembly, the spring operating mechanism 2 further comprises support plates 22 which are located at two sides of the main shaft 1 and are oppositely arranged, the closing spring 21 is located at the outer side of one of the support plates 22, and the pinion 24, the large gear 23, the cam 211 and the output crank arm 210 are respectively located between the two support plates 22.
In addition, the manual closing handle shaft 25, the energy storage large shaft 26 and the trip half shaft 215 penetrate through the two support plates 22 in a direction perpendicular to the main shaft 1, and the electromagnet 213 and the shutter 214 are respectively located on opposite sides of the closing spring 21.
In addition, one end of the closing spring 21 is connected to the energy storage lever 27, and the other end is connected to the left end of the support plate 22 through the suspension spring shaft 28.
Preferably, the base plate 71 has a mounting block 75 mounted thereon for securing the support plate 22.
In order to realize the opening operation of the circuit breaker through the permanent magnet operating mechanism 3, the permanent magnet operating mechanism 3 comprises a fixed block 37, an iron yoke 33, a static iron core 34, a magnet 35, a movable iron core 36 and a coil 39, wherein the iron yoke 33 and the static iron core 34 are fixed on the fixed block 37, the magnet 35 is circumferentially arranged in a circular ring gap between the iron yoke 33 and the static iron core 34, the coil 39 is wound in a coil groove on the opposite side of the static iron core 34 and the movable iron core 36, and an action rod 31 and the movable iron core 36 pass through the static iron core 34 and the fixed block 37 after being fixedly connected and can move along the axis of the action rod 31.
When the movable iron core 36 and the static iron core 34 are in a separated state in a closing state, and when opening current is given, the movable iron core 36 moves rightwards, the acting rod 31 drives the main shaft 1 to move rightwards through the connecting plate 32, the three groups of triangular connecting plates 5 move clockwise around the lower right Kong, and the three insulating pull rods 6 connected with the triangular connecting plates move upwards vertically to realize opening.
Compared with the permanent magnet operating mechanism 3, the permanent magnet operating mechanism 3 has simpler structure, smaller volume and small current value of the coil, has extremely short switching-off time, is obviously smaller than the conventional permanent magnet mechanism circuit breaker in the market, effectively reduces the requirement on a matched controller, and is more convenient to use.
In order to achieve the cooperation of the action bars 31 with the connection plates 32, the ends of the action bars 31 are provided with notches 38, and the connection plates 32 are hinged in the notches 38.
Specifically, the notch 38 is disposed at one end of the action rod 31 facing away from the opening and closing holding mechanism 4, the upper end of the action rod 31 is connected with the main shaft 1, and the opening operation of the circuit breaker is realized by the permanent magnet operating mechanism 3 through the cooperation of the action rod 31 and the connecting plate 32.
To mount the permanent magnet actuator 3, the fixing block 37 is fixed to the bottom plate 71.
In order to realize the holding of the closing and opening states, the opening and closing holding mechanism 4 further comprises a yoke plate 42, a guide sleeve 43 is installed in the holding spring 41, a spring end cover 44 positioned at the top of the holding spring 41 is installed at the upper end of the guide sleeve 43, and the spring end cover 44 is connected with the main shaft 1 through the yoke plate 42.
The retaining spring 41 is sleeved outside the guide sleeve 43.
Wherein the retaining spring 41 is arranged obliquely;
In the open state, the upper end of the holding spring 41 is inclined toward the closing spring 21.
Specifically, during the opening operation, the spindle 1 moves to the right, drives the upper end of the holding spring 41 to rotate to the left and the left, when the opening operation is finished, the moment generated by the pressure of the holding spring 41 is clockwise, the moment generated by the spindle 1 is anticlockwise, the two are balanced, and the opening operation is completed, so that the opening state can be maintained.
In the closing state, the upper end of the holding spring 41 is inclined in a direction away from the closing spring 21.
Specifically, during the closing operation, the spindle 1 moves to the left, drives the upper end of the holding spring 41 to rotate clockwise to the right, when the closing operation is finished, the moment generated by the pressure of the holding spring 41 is counterclockwise, the moment generated by the spindle 1 is clockwise, the two are balanced, and the closing operation is completed, so that the holding of the closing state can be realized.
In order to drive the retaining spring 41 by the spindle 1, the upper end of the yoke plate 42 is hinged to the spindle 1, the lower end is hinged to the spring end cap 44, and the middle is hinged to the fixing plate 74.
The yoke plate 42 is hinged to the main shaft 1, the spring end cover 44 and the fixed plate 74 through corresponding pins, and the retaining springs 41 rotate around the pins at the connection positions of the fixed plate 74 and the yoke plate 42 during opening and closing actions.
To ensure the action of the holding spring 41 during opening and closing, the bottom of the guide sleeve 43 is hinged to a spring mount 76 mounted on the bottom plate 71.
Specifically, the spring base 76 is located between the two fixing plates 74, and the bottom of the retaining spring 41 is connected to the spring base 76 by a pin.
In order to realize manual brake-separating operation, the brake-separating assembly is further arranged on the brake-separating holding mechanism, a brake-separating linkage plate I45, a brake-separating linkage plate II46 and a manual brake-separating handle 47 are arranged on the brake-separating assembly, one end of the brake-separating linkage plate I45 is connected with the linkage plate 42, the other end of the brake-separating linkage plate I is connected with one end of the brake-separating linkage plate II46, and the other end of the brake-separating linkage plate II46 is connected with the manual brake-separating handle 47 through a shaft.
Specifically, the upper end of the brake separating yoke plate I45 is connected to a pin shaft at the joint of the yoke plate 42 and the spring end cover 44, and the lower end is a waist-shaped hole and is hinged with the brake separating yoke plate II46 through the pin shaft.
When the manual brake is manually separated, the manual brake separating handle 47 is rotated anticlockwise, the brake separating yoke plate II46 rotates synchronously with the manual brake separating handle, the brake separating yoke plate I45 pulls the lower end of the yoke plate 42 to rotate clockwise under the drive of the brake separating yoke plate II46, so that the right movement of the main shaft 1 is realized, and the insulation pull rod 6 is driven to vertically ascend through the connection of the triangular yoke plate 5 and the main shaft 1, so that brake separating operation is realized.
When the circuit breaker is in a switching-off state, the movable iron core 36 and the static iron core 34 in the permanent magnet operating mechanism 3 are in a contact state, the energy storage motor 212 or the manual switching-on handle shaft 25 is rotated to electrically or manually store energy for the spring operating mechanism 2, so that the switching-on spring 21 is in an energy maximum position, then the energy of the switching-on spring 21 is released, the main shaft 1 is driven to move leftwards, the three groups of triangular connecting plates 5 move anticlockwise around the lower right holes of the three groups of triangular connecting plates, the three insulating pull rods 6 connected with the three groups of triangular connecting plates move downwards vertically, the connecting plates 42 rotate anticlockwise around the pin shafts of the connecting plates 74, and the movable iron core 36 and the static iron core 34 in the permanent magnet operating mechanism 3 synchronously start to be separated, and the guide sleeve 43 and the retaining spring 41 rotate clockwise around the pin shafts of the connecting plates 42 and the fixing plates 74. When the closing operation is finished, the pin shaft is used as a rotation center, the moment generated by the pressure of the holding spring 41 is anticlockwise, the moment generated by the main shaft 1 is clockwise, the two are balanced, and the closing state is maintained.
When the circuit breaker is in a closing state, a movable iron core 36 and a static iron core 34 in a permanent magnet operating mechanism 3 are in a separated state, and when opening current or manual opening operation is given, the movable iron core 36 in the permanent magnet operating mechanism 3 starts to move rightwards to drive a main shaft 1 to move rightwards, three groups of triangular link plates 5 move clockwise around a right lower part Kong of the triangular link plates, three connected insulating pull rods 6 are expected to move upwards, and simultaneously a link plate 42 rotates clockwise around a pin shaft connected with a fixed plate 74, and synchronously, a guide sleeve 43 and a retaining spring 41 rotate anticlockwise around the pin shaft connected with the link plate 42 and the fixed plate 74, when opening operation is finished, the pin shaft is taken as a rotation center, the moment generated by the pressure of the retaining spring 41 is clockwise, the moment generated by the main shaft 1 is anticlockwise, the two are balanced, and the opening state is maintained. At this time, the movable iron core 36 and the stationary iron core 34 in the permanent magnet operating mechanism 3 are in contact with each other, and the brake-separating limiting and brake-separating actions are completed.
According to the invention, the spring operating mechanism 2 is adopted to realize switching-on operation, the permanent magnet operating mechanism 3 is adopted to realize switching-off operation, so that the problem that switching-on cannot be kept when manual switching-on operation occurs or switching-off cannot be carried out after electric switching-on operation is carried out due to improper cooperation between the conventional permanent magnet mechanism breaker spring operating mechanism 2 and the permanent magnet operating mechanism 3 is fundamentally solved, switching-off time can be further shortened, and the safety of a power grid or power equipment is effectively protected.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (7)
1. A quick breaking circuit breaker is characterized by comprising
The main shaft (1) is respectively connected with three insulating pull rods (6) of the circuit breaker through three groups of triangular connecting plates (5) which are arranged in the same direction;
The spring operating mechanism (2) comprises a closing component connected with the main shaft (1) and a closing spring (21) arranged on one side of the closing component, and the closing component can store energy for the closing spring (21) to drive the breaker to close;
The permanent magnet operating mechanism (3) is characterized in that an action rod (31) of the permanent magnet operating mechanism is connected with the main shaft (1) through a connecting plate (32) so as to drive the breaker to break;
an opening/closing holding mechanism (4) comprising a holding spring (41), wherein the moment of the holding spring (41) and the moment generated by the main shaft (1) are balanced to each other, so that the closing or opening state of the circuit breaker is maintained;
The device comprises a base plate, a base plate fixing mechanism (7), a U-shaped groove plate I (72) and a U-shaped groove plate II (73) which are arranged on the base plate (71) side by side, and a fixing plate (74) which is arranged in pairs and is positioned between the two U-shaped groove plates, wherein three groups of triangular connecting plates (5) are respectively connected with the U-shaped groove plate I (72), the U-shaped groove plate II (73) and the fixing plate (74);
The opening and closing holding mechanism (4) further comprises a connecting plate (42), a guide sleeve (43) is arranged in the holding spring (41), a spring end cover (44) positioned at the top of the holding spring (41) is arranged at the upper end of the guide sleeve (43), and the spring end cover (44) is connected with the main shaft (1) through the connecting plate (42);
The upper end of the connecting plate (42) is hinged with the main shaft (1), the lower end of the connecting plate is hinged with the spring end cover (44), and the middle part of the connecting plate is hinged with the fixed plate (74);
The bottom of the guide sleeve (43) is hinged with a spring base (76) arranged on the bottom plate (71).
2. A quick breaking circuit breaker according to claim 1, characterized in that the closing assembly comprises an energy storage assembly and a closing action assembly;
the energy storage assembly comprises a large gear (23) and a small gear (24) which are meshed, a manual closing handle (25) which rotates synchronously with the small gear is arranged at the center of the small gear (24), an energy storage large shaft (26) which rotates synchronously with the large gear is arranged at the center of the large gear (23), and one end of the energy storage large shaft (26) is connected with one end of a closing spring (21) through an energy storage crank arm (27);
The switching-on action assembly comprises a cam (211) which is arranged on the energy storage large shaft (26) and can synchronously rotate with the energy storage large shaft, and an output crank arm (210) which is matched with the cam (211), wherein the output crank arm (210) is connected with the main shaft (1).
3. A quick breaking circuit breaker according to claim 1, characterized in that the permanent magnet operating mechanism (3) comprises a fixed block (37), an iron yoke (33), a static iron core (34), a magnet (35), a movable iron core (36) and a coil (39), wherein the iron yoke (33) and the static iron core (34) are fixed on the fixed block (37), the magnet (35) is circumferentially arranged in a circular gap between the iron yoke (33) and the static iron core (34), the coil (39) is wound in coil grooves on opposite sides of the static iron core (34) and the movable iron core (36), and the action bar (31) and the movable iron core (36) pass through the fixed iron core (34) and the fixed block (37) after being fixedly connected and can move along the axis of the action bar (31).
4. A quick breaking circuit breaker according to claim 3, characterized in that the end of the action bar (31) is provided with a notch (38), the connection plate (32) being hinged in the notch (38).
5. A quick breaking circuit breaker according to claim 3, characterized in that the fixed block (37) is fixed on a base plate (71).
6. A quick breaking circuit breaker according to claim 1, characterized in that the retaining spring (41) is arranged inclined;
In the opening state, the upper end of the holding spring (41) is inclined towards the direction of the closing spring (21);
in a closing state, the upper end of the holding spring (41) is inclined in a direction away from the closing spring (21).
7. A quick breaking circuit breaker according to claim 1, characterized in that the breaking and closing holding mechanism is further provided with a manual breaking assembly, the manual breaking assembly comprises a breaking yoke plate I (45), a breaking yoke plate II (46) and a manual breaking handle (47), one end of the breaking yoke plate I (45) is connected with the yoke plate (42), the other end is connected with one end of the breaking yoke plate II (46), and the other end of the breaking yoke plate II (46) is connected with the manual breaking handle (47) through a shaft.
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| CN202310384714.6A CN117766350B (en) | 2023-04-12 | 2023-04-12 | Quick breaking circuit breaker |
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| CN202310384714.6A CN117766350B (en) | 2023-04-12 | 2023-04-12 | Quick breaking circuit breaker |
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| CN117766350B true CN117766350B (en) | 2025-06-10 |
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| CN118380298B (en) * | 2024-06-27 | 2024-10-25 | 常州博瑞电力自动化设备有限公司 | Electric control circuit breaker mechanism capable of manually closing and opening brake |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201075355Y (en) * | 2007-09-12 | 2008-06-18 | 贺晓红 | Outdoor high-voltage permanent magnetism mechanism vacuum circuit breaker |
| CN104021976A (en) * | 2014-06-10 | 2014-09-03 | 浙江伏尔特电器有限公司 | Permanent magnetic vacuum circuit breaker |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100554376B1 (en) * | 2003-12-24 | 2006-02-22 | 엘에스산전 주식회사 | Vacuum breaker using permanent magnet actuator |
| CN101162659A (en) * | 2006-10-13 | 2008-04-16 | Abb技术有限公司 | Switch installation used for electrical power system |
| MX2011008472A (en) * | 2009-02-17 | 2011-11-18 | Abb Technology Ag | Manual tripping device for circuit breaker. |
| CN103280373B (en) * | 2013-05-20 | 2015-09-02 | 宁波鑫鑫鑫寅电气有限公司 | Permanent magnetism in outdoor three-phase column vacuum breaker and spring dual operation mechanisms |
| CN203931929U (en) * | 2014-06-17 | 2014-11-05 | 许昌永新电气股份有限公司 | The interlock of outdoor high-voltage vacuum breaker splitting or integrating lock integrated mechanism |
| CN106158500B (en) * | 2016-07-21 | 2018-11-20 | 新疆特变电工自控设备有限公司 | The permanent-magnet breaker of included manual closing mechanism |
| CN106356208B (en) * | 2016-11-25 | 2018-03-16 | 贵州泰永长征技术股份有限公司 | Dual-power transfer switch electrical equipment is pressed in a kind of permanent magnetism |
| CN206619544U (en) * | 2017-04-15 | 2017-11-07 | 浙江常有电气有限公司 | Magneto vacuum circuit breaker |
| CN108428575B (en) * | 2018-03-16 | 2019-11-15 | 江苏省如高高压电器有限公司 | A kind of permanent-magnet breaker dual-mechanism actuating system |
| CN109192602B (en) * | 2018-10-30 | 2020-01-17 | 北京科力恒久电力技术股份有限公司 | Spring permanent magnet switching on and switching off operation device |
-
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201075355Y (en) * | 2007-09-12 | 2008-06-18 | 贺晓红 | Outdoor high-voltage permanent magnetism mechanism vacuum circuit breaker |
| CN104021976A (en) * | 2014-06-10 | 2014-09-03 | 浙江伏尔特电器有限公司 | Permanent magnetic vacuum circuit breaker |
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