CN210296215U - Permanent magnet vacuum circuit breaker and gas-filled cabinet - Google Patents
Permanent magnet vacuum circuit breaker and gas-filled cabinet Download PDFInfo
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- CN210296215U CN210296215U CN201920992192.7U CN201920992192U CN210296215U CN 210296215 U CN210296215 U CN 210296215U CN 201920992192 U CN201920992192 U CN 201920992192U CN 210296215 U CN210296215 U CN 210296215U
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Abstract
The utility model provides a permanent magnetism vacuum circuit breaker and gas-filled cabinet, include the actuating lever of arranging in proper order along the straight line, insulating pull rod, the connecting rod subassembly, the flexible connector, vacuum interrupter and leading-out terminal, insulating pull rod is connected with the actuating lever, the connecting rod subassembly is connected with insulating pull rod, the contact spring housing is on the connecting rod subassembly, the flexible connector is provided with the locating hole with running through, the connecting rod subassembly passes the locating hole, contact spring butt is between flexible connector and connecting rod subassembly, be provided with moving contact and static contact in the vacuum interrupter, the moving contact is connected with the connecting rod subassembly, the moving contact can remove for the static contact, moving contact and static contact detachable are connected, leading. Through each device that arranges in proper order along the straight line, the miniaturized permanent magnetism circuit breaker that realizes can provide faster breaking time and breaking capacity for aerifing the cabinet.
Description
Technical Field
The utility model belongs to the technical field of high-voltage electrical equipment and specifically relates to a permanent magnetism vacuum circuit breaker and aerify cabinet.
Background
The gas-filled cabinet product is widely applied to the construction and the transformation of an urban power grid, is suitable for the ring network power supply and the terminal power supply in a distribution power system, is also suitable for being installed in a pre-installed substation and a power distribution station, has the characteristics of full sealing, maintenance free, compact structure and high reliability, adopts modular design, is compact and can be freely combined and expanded, can be configured with a combined electrical appliance unit and a circuit breaker unit, and plays an important role in the development of the power industry in China.
In the process of traditional line construction and transformation, the circuit breaker in the gas-filled cabinet has no great performance requirement under the condition of small line capacity. The circuit breaker in the existing stage of the gas-filled cabinet adopts a spring operating mechanism, and the switching-on and switching-off of the spring operating mechanism in work are mainly realized by the stretching and energy storage of a spring. During the work of the circuit breaker, the spring is in a load state for a long time, and the spring stiffness can be in an attenuation state after the spring is in a long-time state, so that the output of the switching-on and switching-off of the circuit breaker can be influenced, and the discreteness of parameters of the switching-on time, the switching-off time, the switching-on speed, the switching-off speed, the switching-on bounce, the switching-off bounce and the like of the circuit breaker is too large or the circuit breaker fails.
SUMMERY OF THE UTILITY MODEL
A first object of the present invention is to provide a permanent magnet vacuum circuit breaker which is compact and compact.
The second purpose of the utility model is to provide an install above-mentioned permanent magnetism vacuum circuit breaker's vacuum cabinet.
In order to realize the first object of the utility model, the utility model provides a permanent magnet vacuum circuit breaker, including a circuit breaking unit, including a permanent magnet mechanism, an insulating pull rod, a connecting rod component, a contact spring, a flexible connector, a vacuum arc extinguish chamber and a terminal outgoing line, the permanent magnet mechanism includes a driving rod, a first end of the insulating pull rod is connected with the driving rod, a first end of the connecting rod component is connected with a second end of the insulating pull rod, the contact spring is sleeved on the connecting rod component, the flexible connector is provided with a positioning hole in a penetrating way, the connecting rod component passes through the positioning hole, the contact spring is abutted between the flexible connector and the connecting rod component, a moving contact and a static contact are arranged in the vacuum arc extinguish chamber, the moving contact is connected with the second end of the connecting rod component, the moving contact is electrically, the driving rod, the insulating pull rod, the connecting rod assembly, the flexible connecting piece, the vacuum arc-extinguishing chamber and the wire outlet terminal are sequentially arranged along a straight line.
It is obvious by above-mentioned scheme, through each device of arranging in proper order along the straight line to be equipped with permanent magnetic mechanism and improve the intellectuality of electric wire netting control, and permanent magnetism vacuum circuit breaker on the basis of characteristics such as compact structure, reliability height, do not change and aerify under the condition of cabinet size, use the utility model discloses miniaturized circuit breaker can improve the reliability of the circuit that breaks of aerifing the cabinet to and obtain faster break-off time.
In a further proposal, the driving rod, the insulating pull rod, the connecting rod component and the vacuum arc-extinguishing chamber are coaxially arranged along the longitudinal direction.
Therefore, the coaxial driving arrangement enables the connection of the driving structure to be more direct and reliable and the switching performance to be better.
Still further, the flexible connector is arranged in the transverse direction.
According to a further scheme, the permanent magnet mechanism further comprises an outer yoke, a coil and an inner yoke, the outer yoke is located on the outer side, the coil is arranged in the outer yoke, the inner yoke is arranged in the outer yoke, and the driving rod penetrates through the coil and the inner yoke.
Therefore, the connection is more reliable and stable through the soft connecting piece, the permanent magnet mechanism can provide rapid and stable brake separating characteristics for the circuit breaker, the brake separating time is not more than 15ms, and the fault isolation can be completely ensured under 55ms under the condition of considering the arcing time by matching with a protection outlet.
According to a further scheme, the permanent magnet vacuum circuit breaker further comprises a synchronization assembly, the synchronization assembly comprises a synchronization shaft and a synchronization contact arm, the synchronization contact arm is hinged to the connecting rod assembly and is in driving connection with the synchronization shaft, and the synchronization contact arm rotates around the axis of the synchronization shaft.
According to a further scheme, the permanent magnet vacuum circuit breaker comprises a plurality of circuit breaking units, the synchronizing assembly comprises a plurality of synchronizing contact arms, the synchronizing contact arms are respectively in driving connection with the synchronizing shaft, and one synchronizing contact arm is hinged to a connecting rod assembly of one circuit breaking unit.
Therefore, the permanent magnet vacuum circuit breaker comprises a plurality of circuit breaking units and is provided with a plurality of permanent magnet mechanisms for driving, and in the whole switching-on and switching-off process, due to the mutual matching relationship of the synchronizing shaft and the synchronizing contact arm, the synchronizing shaft can drive the switching-on and switching-off of other circuit breaking units, so that the synchronizing function is finally formed, and the overall switching-on and switching-off performance is improved.
According to a further scheme, the synchronous assembly further comprises a pin shaft, the pin shaft penetrates through the connecting rod assembly, the axial direction of the pin shaft is perpendicular to the axial direction of the connecting rod assembly, the synchronous contact arm is provided with a sliding hole, and the end portion of the pin shaft moves in the sliding hole.
The further scheme is that the synchronizing assembly comprises two synchronizing contact arms, the two synchronizing contact arms are respectively located on two radial sides of the connecting rod assembly, two ends of the pin shaft are respectively matched with sliding holes of the synchronizing contact arms, and the two synchronizing contact arms are respectively in driving connection with the synchronizing shaft.
From top to bottom, utilize round pin axle and both sides to touch the setting of arm in the same phase, linear motion's connecting rod subassembly and the cooperation of pivoted in the same phase subassembly are more smooth and easy, improve good operating stability for the rotating fit in the same phase of connecting rod subassembly and in the same phase subassembly.
The connecting rod assembly comprises a first connecting rod and a second connecting rod which are coaxially connected, the first end of the first connecting rod is connected with the second end of the insulating pull rod, the second end of the first connecting rod is provided with a butting part, the second end of the first connecting rod is connected with the first end of the second connecting rod, the second end of the second connecting rod is connected with the moving contact, the contact spring is sleeved outside the second connecting rod, and the contact spring is butted between the flexible connecting piece and the butting part.
Therefore, the contact spring is sleeved with the first connecting rod and the second connecting rod which are connected in a separable mode and is abutted between the flexible connecting piece and the abutting portion, and the contact spring can provide stable elastic force for the moving contact.
In order to realize the utility model discloses the second purpose, the utility model provides an aerify cabinet, include the permanent magnetism vacuum circuit breaker as above-mentioned scheme.
It is obvious by above-mentioned scheme, through each device of arranging in proper order along the straight line to aerify the cabinet and be equipped with permanent magnetic mechanism and improve the intellectuality of electric wire netting control, and permanent magnetism vacuum circuit breaker on the basis of characteristics such as compact structure, reliability height, do not change and aerify under the condition of cabinet size, use the utility model discloses miniaturized circuit breaker can improve the reliability of the circuit that breaks of aerifing the cabinet, and obtain faster breaking time and breaking capacity.
Drawings
Fig. 1 is a structural diagram of an embodiment of the permanent magnet vacuum circuit breaker of the present invention.
Fig. 2 is a structural diagram of an embodiment of the permanent magnet vacuum circuit breaker according to another view angle.
Fig. 3 is a structural diagram of the permanent magnet vacuum circuit breaker according to the embodiment of the present invention after omitting the support.
Fig. 4 is an exploded view of an embodiment of the permanent magnet vacuum circuit breaker of the present invention.
Fig. 5 is a matching structure diagram of the synchronous component in the embodiment of the permanent magnet vacuum circuit breaker of the present invention.
Fig. 6 is a cross-sectional view of an embodiment of the permanent magnet vacuum circuit breaker of the present invention.
The present invention will be further explained with reference to the drawings and examples.
Detailed Description
Referring to fig. 1 to 3, a permanent magnet vacuum circuit breaker 1 includes three breaking units 2 arranged side by side, a switch front plate 11, a left bracket 12, a right bracket 13, three permanent magnet mechanism fixing plates 14, a vacuum interrupter bracket 17, and a breaker lower bracket 15, the switch front plate 11 is disposed between the left bracket 12 and the right bracket 13, and the switch front plate 11 is provided with an operation hole 111.
Referring to fig. 4 to 6, the three breaking units 2 have the same structure, and an example is described below with reference to one breaking unit 2, where the breaking unit 2 includes a permanent magnet mechanism 21, an insulating pull rod 22, a connecting rod assembly 23, a contact spring 25, a flexible connecting member 24, a vacuum interrupter 28, and an outlet terminal 29, and the permanent magnet mechanism 21, the insulating pull rod 22, the connecting rod assembly 23, the contact spring 25, the flexible connecting member 24, the vacuum interrupter 28, and the outlet terminal 29 are sequentially arranged in a straight line from top to bottom.
The permanent magnet mechanism 21 includes a drive lever 216, an outer yoke 211, a coil 217, a trip spring 215, N38H ndfeb 218, upper and lower plates 213 and 214 and an inner yoke 212, the outer yoke 211 is located at the outer side and is provided with an accommodating cavity inside, the upper cover plate 213 is arranged above the outer yoke 211, the lower plate 214 is arranged below the outer yoke 211, the coil 217 is arranged in the outer yoke 211, the inner yoke 212 is arranged at the lower side of the coil 217, the N38H NdFeB 218 is arranged between the inner yoke 212 and the outer yoke 211, the driving rod 216 penetrates through the coil 217 and the inner yoke 212, the opening spring 215 is sleeved outside the driving rod 216, the opening spring 215 abuts between the lower plate 214 and the driving rod 216, the driving rod 216 penetrates through the lower plate 214 to the outside, the permanent magnet mechanism 21 is fixedly connected to the permanent magnet mechanism fixing plate 14, and the permanent magnet mechanism fixing plate 14 is connected between the left bracket 12.
The insulating pull rod 22 is made of insulating materials, the upper end of the insulating pull rod 22 is connected with the driving rod 216, the first end of the connecting rod assembly 23 is connected with the lower end of the insulating pull rod 22, the connecting rod assembly 23 comprises a first connecting rod 231 and a second connecting rod 232 which are coaxially connected, the first end of the first connecting rod 231 is connected with the second end of the insulating pull rod 22, the first connecting rod 231 is axially provided with a mounting hole, the first connecting rod 231 is transversely provided with a positioning hole 233 in a penetrating manner, the positioning hole 233 penetrates through the mounting hole, the first connecting rod 231 is provided with an abutting part 234 at the second end, the abutting part 234 is arranged in a ring platform manner, the first end of the second connecting rod 232 is transversely provided with a positioning hole in a penetrating manner, the first end of the second connecting rod 232 extends into the mounting hole, the positioning hole 233 is transversely communicated with the positioning hole of the second connecting rod 232, the contact spring 25 is sleeved outside the second connecting rod 232.
The flexible connecting element 24 is transversely arranged and connected between the left bracket 12 and the right bracket 13, and has a left and right wire outlet structure, the flexible connecting element 24 is longitudinally provided with a positioning hole 241 in a penetrating manner, the vacuum arc-extinguishing chamber 28 is internally provided with a moving contact and a static contact (not shown), the moving contact is positioned above the static contact, the moving contact can move relative to the static contact, the moving contact and the static contact can be detachably connected in the vacuum chamber, the vacuum arc-extinguishing chamber 28 is provided with a moving end cover plate 27 at the upper end, the moving end cover plate 27 is connected with the lower surface of the flexible connecting element 24, the upper surface of the flexible connecting element 24 is provided with a spring pad 26, the second end of the second connecting rod 232 passes through the spring pad 26 and the positioning hole 241 and then is connected with the moving contact, the flexible connecting element 24 is electrically connected with the moving contact, the contact spring 25 is abutted between the, three breaker lower holders 15 are connected between the holder 12 and the right holder 13 at the lower portion, respectively.
The driving rod 216, the insulating pull rod 22, the first connecting rod 231, the second connecting rod 232, the vacuum interrupter 28, the movable contact and the fixed contact are coaxially arranged in the longitudinal direction.
The permanent magnet vacuum circuit breaker 1 further comprises a synchronizing assembly 3, the synchronizing assembly 3 comprises a synchronizing shaft 31, a pin shaft 33, three mounting frames 16 and six synchronizing contact arms 32, the synchronizing shaft 31 is provided with a driving rod with a hexagonal cross section, the mounting frames 16 are mounted on the inner side of the right support 13, the three mounting frames 16 are transversely arranged, the mounting frames 16 are transversely provided with positioning holes in a penetrating manner, the synchronizing shaft 31 penetrates through the three positioning holes, the two synchronizing contact arms 32 are respectively arranged on the two radial sides of the first connecting rod 231, the synchronizing contact arms 32 are transversely provided with a driving hole 321 and a sliding hole 322 in a penetrating manner, the driving hole 321 is arranged in a hexagonal manner, the sliding hole 322 is arranged in a waist-round hole manner, a positioning ring is arranged on the periphery of the driving hole 321 towards the mounting frame 16, the synchronizing shaft 31 penetrates through the plurality of driving holes 321 and the positioning holes of the mounting frames 16, and the rotating driving connection of the synchronizing shaft 31 to, and the contemporaneous contact arm 32 rotates about the axis of contemporaneous shaft 31. The two ends of the pin shaft 33 are provided with rollers 331, the rollers 331 are located in the sliding holes 322 and slide or rotate in cooperation with the sliding holes 322, and the axial direction of the pin shaft 33 is perpendicular to the axial direction of the connecting rod assembly 23, so that the first connecting rod 231 is hinged to the synchronous contact arm 32.
The connecting rod assemblies 23 of the three breaking units 2 are all connected with the synchronizing shaft 31, and then the synchronizing assemblies 3 synchronously link the connecting rod assemblies 23 of the three breaking units 2. When a closing instruction is obtained, the three-phase permanent magnet mechanism obtains closing energy, and then drives the driving rod 216, the insulating pull rod 22, the first connecting rod 231, the second connecting rod 232 and the moving contact to move downwards in sequence, so that the moving contact is connected with the fixed contact, and then closing operation is completed. At the moment, the permanent magnet mechanism keeps the current position by a magnetic circuit, and in the whole closing process, under the synchronous rotation action of the synchronous shaft, the first connecting rod 231 is driven to move simultaneously, so that the synchronous action is realized. When a brake separating instruction is obtained, the 3-phase permanent magnetic mechanism obtains the brake separating instruction at the same time, after the mechanism generates electromagnetic force to overcome the magnetic circuit closing holding force, the brake separating is completed under the combined action of the contact spring and the brake separating spring, the synchronous shaft is rotated to drive the synchronous contact arm, the synchronous contact arm acts on the roller to realize the synchronous brake separating action, in addition, an operating handle can be arranged at the position of the operating hole 111 and is in driving connection with the synchronous shaft 31, and the manual brake separating can be completed by rotating the operating handle.
The gas-filled cabinet comprises the permanent magnet vacuum circuit breaker 1. The utility model discloses can be used to the high insulating aerify and use in the cabinet, and adopt three singles to directly drive the permanent magnetic mechanism of mode design, can provide rapid stabilization's separating brake characteristic for the circuit breaker, the separating brake time is not more than 15ms, and the export is protected in the cooperation, under the condition of considering the arcing time, can guarantee isolation fault under 55ms completely. In the distribution protection, can be fast isolation trouble, reduce the power failure scope, confirm the fault point, in distribution network automation, play important effect. On guaranteeing to aerify the basis of characteristics such as the cabinet is totally closed, compact structure, reliability height, do not change and aerify under the condition of cabinet size, use the utility model discloses miniaturized circuit breaker can improve the reliability of the circuit of breaking of aerifing the cabinet to and obtain faster breaking time.
The switching-on of the permanent magnetic mechanism depends on electromagnetic force, the switching-on position depends on a magnetic circuit to be kept, and the initial speed of the switching-off is improved by the electromagnetic force and then is provided by a switching-off spring and a breaker contact spring. The transmission part only has a driving rod and can provide the function of quickly switching on and switching off the brake. The method has the characteristics of no maintenance and low failure rate.
In addition, the structure of the circuit breaker is distributed up and down, the three-phase permanent magnetic mechanism is positioned at the top of the circuit breaker, a direct-drive design is adopted, a plurality of transmission links are reduced, the synchronizing shaft and the synchronizing contact arm are mutually restricted and matched with the roller, not only is synchronous structural control provided for switching on and off of the circuit breaker, but also the manual switching-off function of the circuit breaker is realized under the switching-on state of the circuit breaker, the switching on and off of the circuit breaker are realized, the circuit breaker can move up and down through the roller, the up and down swinging of the synchronizing contact arm can drive the synchronizing shaft to rotate, and the two positions of the rotating synchronizing shaft can provide the change of switching-on and-off position.
Claims (10)
1. Permanent magnet vacuum circuit breaker, comprising a breaking unit, characterized in that;
the breaking unit includes:
the permanent magnet mechanism comprises a driving rod;
the first end of the insulating pull rod is connected with the driving rod;
a connecting rod assembly, a first end of the connecting rod assembly being connected with a second end of the insulating pull rod;
the contact spring is sleeved on the connecting rod assembly;
the flexible connecting piece is provided with a positioning hole in a penetrating manner, the connecting rod assembly penetrates through the positioning hole, and the contact spring abuts against between the flexible connecting piece and the connecting rod assembly;
the vacuum arc extinguish chamber is internally provided with a moving contact and a fixed contact, the moving contact is connected with the second end of the connecting rod component, the moving contact is electrically connected with the flexible connecting piece, the moving contact can move relative to the fixed contact, and the moving contact and the fixed contact can be separately connected;
the outlet terminal is electrically connected with the fixed contact;
the driving rod, the insulating pull rod, the connecting rod component, the flexible connecting piece, the vacuum arc-extinguishing chamber and the outgoing line terminal are sequentially arranged along a straight line.
2. The permanent magnet vacuum interrupter of claim 1, wherein:
the driving rod, the insulating pull rod, the connecting rod assembly and the vacuum arc-extinguishing chamber are coaxially arranged along the longitudinal direction.
3. The permanent magnet vacuum interrupter of claim 2, wherein:
the flexible connecting piece is arranged along the transverse direction.
4. The permanent magnet vacuum interrupter of claim 1, wherein:
the permanent magnet mechanism further comprises an outer yoke, a coil and an inner yoke, the outer yoke is located on the outer side, the coil is arranged in the outer yoke, the inner yoke is arranged in the outer yoke, and the driving rod penetrates through the coil and the inner yoke.
5. The permanent magnet vacuum interrupter according to any one of claims 1 to 4, characterized in that:
permanent magnetism vacuum circuit breaker still includes the synchronizing assembly, the synchronizing assembly includes synchronizing shaft and synchronizing and touches the arm, synchronizing touch the arm with connecting rod component is articulated, synchronizing touch the arm with synchronizing shaft drive connects, synchronizing touches the arm and winds synchronizing shaft's axis rotates.
6. The permanent magnet vacuum interrupter of claim 5, wherein:
the permanent magnet vacuum circuit breaker comprises a plurality of circuit breaking units, the synchronous assembly comprises a plurality of synchronous contact arms, the synchronous contact arms are respectively in driving connection with the synchronous shaft, and one synchronous contact arm is hinged with the connecting rod assembly of one circuit breaking unit.
7. The permanent magnet vacuum interrupter of claim 5, wherein:
the synchronous assembly further comprises a pin shaft, the pin shaft penetrates through the connecting rod assembly, the axial direction of the pin shaft is perpendicular to the axial direction of the connecting rod assembly, the synchronous contact arm is provided with a sliding hole, and the end portion of the pin shaft moves in the sliding hole.
8. The permanent magnet vacuum interrupter of claim 7, wherein:
the synchronous assembly comprises two synchronous contact arms, the two synchronous contact arms are respectively located on two radial sides of the connecting rod assembly, two ends of the pin shaft are respectively matched with the slide holes of the synchronous contact arms, and the two synchronous contact arms are respectively in driving connection with the synchronous shaft.
9. The permanent magnet vacuum interrupter of claim 5, wherein:
the connecting rod assembly comprises a first connecting rod and a second connecting rod which are coaxially connected, the first end of the first connecting rod is connected with the second end of the insulating pull rod, the second end of the first connecting rod is provided with a butting part, the second end of the first connecting rod is connected with the first end of the second connecting rod, the second end of the second connecting rod is connected with the movable contact, the contact spring is sleeved outside the second connecting rod, and the contact spring is butted between the flexible connecting piece and the butting part.
10. Gas-filled cabinet, characterized in that it comprises a permanent-magnet vacuum interrupter according to any of the claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920992192.7U CN210296215U (en) | 2019-06-27 | 2019-06-27 | Permanent magnet vacuum circuit breaker and gas-filled cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920992192.7U CN210296215U (en) | 2019-06-27 | 2019-06-27 | Permanent magnet vacuum circuit breaker and gas-filled cabinet |
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| Publication Number | Publication Date |
|---|---|
| CN210296215U true CN210296215U (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920992192.7U Active CN210296215U (en) | 2019-06-27 | 2019-06-27 | Permanent magnet vacuum circuit breaker and gas-filled cabinet |
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| CN (1) | CN210296215U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110233082A (en) * | 2019-06-27 | 2019-09-13 | 瑞熙恩电气（珠海）有限公司 | Permanent magnetic vacuum breaker and gas-filling cabinet |
-
2019
- 2019-06-27 CN CN201920992192.7U patent/CN210296215U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110233082A (en) * | 2019-06-27 | 2019-09-13 | 瑞熙恩电气（珠海）有限公司 | Permanent magnetic vacuum breaker and gas-filling cabinet |
| CN110233082B (en) * | 2019-06-27 | 2024-02-20 | 瑞熙恩电气（珠海）有限公司 | Permanent magnet vacuum circuit breaker and inflatable cabinet |
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