CN114566409A - Electromagnetic type quick tripping device and circuit breaker - Google Patents
Electromagnetic type quick tripping device and circuit breaker Download PDFInfo
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- CN114566409A CN114566409A CN202210111063.9A CN202210111063A CN114566409A CN 114566409 A CN114566409 A CN 114566409A CN 202210111063 A CN202210111063 A CN 202210111063A CN 114566409 A CN114566409 A CN 114566409A
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- air
- tool bit
- switch tool
- magnetic
- arc extinguishing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
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- Electromagnetism (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses an electromagnetic quick tripping device and a breaker, which comprise a plurality of electromagnets which are distributed in series and are arranged close to a switch tool bit, and magnetic association components which are arranged between all the electromagnets and the switch tool bit, wherein a gas blowing arc extinguishing component is arranged below the magnetic association components, and gas outlet nozzles of the gas blowing arc extinguishing component face the switch tool bit; the electromagnet and the switch tool bit are connected in parallel on the same electrified circuit, the electromagnetic force generated by the electromagnet adsorbs the magnetic correlation component to move, the switch tool bit is separated from a main contact of the electrified circuit under the driving of the magnetic correlation component to break the electrified circuit, and the air blowing and arc extinguishing component is extruded when the magnetic correlation component moves, so that an air outlet pressurization pipeline of the air blowing and arc extinguishing component generates compressed air, and the compressed air performs air blowing and arc extinguishing operation on electric arcs between the switch tool bit and the main contact; the tripping device with the tripping and arc extinguishing functions is more centralized integrally and is convenient to install and use.
Description
Technical Field
The invention relates to the technical field of circuit breakers, in particular to an electromagnetic quick tripping device and a circuit breaker.
Background
The tripping device particularly utilizes the electromagnetic principle to carry out overcurrent cutoff processing, and cuts off current when the current is too high. When the contact breaks the circuit, the high temperature will burn the contact and the insulation, and the existing arc extinguishing work and the electromagnetic tripping work are independent operations, for example, in the operation process of the electromagnetic tripping, the gas-blast arc extinguishing device is used for generating compressed gas to longitudinally blow the position of the connecting contact to extinguish the arc.
The above operation has the following drawbacks:
with electromagnetic trip device often applied to the circuit breaker, and for the convenience of installation, the volume of circuit breaker is generally not big, consequently hardly with the effectual integration of gas quenching device and electromagnetic trip in the circuit breaker, very easily because the volume problem causes the gas circuit of gas quenching narrow, lead to the arc extinguishing inefficiency, and the gas quenching device needs to increase power component in order to produce compressed gas, and power component needs redesign intercommunication conducting wire, therefore the structure is complicated, and the operational mode is more difficult.
Disclosure of Invention
The invention aims to provide an electromagnetic quick tripping device and a circuit breaker, and aims to solve the technical problems that in the prior art, due to the fact that the size problem causes a gas circuit for gas blast arc extinguishing to be narrow, the arc extinguishing efficiency is low, the structure for redesigning and communicating a conducting circuit is complex, and the operation mode is difficult.
In order to solve the technical problems, the invention specifically provides the following technical scheme:
an electromagnetic quick tripping device comprises a plurality of electromagnets which are distributed in series and are arranged close to a switch tool bit, and magnetic association assemblies which are arranged between all the electromagnets and the switch tool bit, wherein a blowing arc-extinguishing assembly is arranged below the magnetic association assemblies, and air outlet nozzles of the blowing arc-extinguishing assembly face the switch tool bit;
the electro-magnet with switch tool bit parallel connection is on same circular telegram circuit, the electromagnetic force that the electro-magnet produced adsorbs magnetism association subassembly removes, just the switch tool bit is in under the drive of magnetism association subassembly with the main contact of circular telegram circuit breaks away from with disconnection circular telegram circuit, just extrusion when magnetism association subassembly removes the arc extinguishing subassembly of blowing, so that the pressurized duct that gives vent to anger of the arc extinguishing subassembly of blowing produces compressed gas, compressed gas is right arc between switch tool bit and the main contact carries out the arc extinguishing operation of blowing.
As a preferable scheme of the present invention, the magnetic association component includes a metal block disposed between the electromagnet and the switch bit, and a lifting hinge rod disposed at an upper end of the metal block, and another end of the lifting hinge rod is connected to an end of the switch bit away from the hinge position;
Two parallel side surfaces of the metal block are provided with limiting vertical plates, at least one support rod moving up and down along the limiting vertical plates is arranged on the two parallel side surfaces of the metal block, and the metal block moves up and down along the supporting channels of the limiting vertical plates through the support rods;
the support device is characterized in that a limiting guide pillar is arranged inside the support channel, the support rod is sleeved on the outer surface of the limiting guide pillar, compression springs connected with the end portions of the corresponding support channels are respectively arranged on the lower surfaces of the support rods, limiting pull ropes arranged on the peripheries of the compression springs are arranged at the edges of the support rods, and the support rods are kept in a static state under the combined action of the compression springs and the limiting pull ropes.
As a preferred scheme of the present invention, the metal block includes a light insulating block and a magnetic metal plate disposed at a lower end of the light insulating block, and the electromagnet adsorbs the magnetic metal plate to drive the switch bit to disengage from the main contact;
be equipped with a plurality of fretworks on the magnetic metal board and cut the groove, just the fretwork cuts the groove and will the magnetic metal board cuts for the atress piece that only corresponds the electro-magnet, and two adjacent between the magnetic metal board through at least one by the associated pole that the cutting of fretwork cut the groove and form is connected.
As a preferable scheme of the present invention, the lifting hinge rod includes a first vertical rod fixed on the upper surface of the light insulating block, and a second vertical rod perpendicular to the switch bit, and the first vertical rod and the second vertical rod are hinged to each other.
As a preferred scheme of the present invention, the air-blowing arc-extinguishing component includes an air-storing bag disposed between the electromagnet and the magnetic-related component, a plurality of air-outlet pressurizing pipelines disposed on the air-storing bag, and a plurality of air-inlet pipelines disposed on the air-storing bag, a plurality of drying bags uniformly distributed are disposed inside the air-storing bag, the air input into the air-inlet pipelines is dried by the drying bags, and the dried air in the air-storing bag is ejected through the air-outlet pressurizing pipelines under the squeezing action of the magnetic-related component, so as to achieve an arc-extinguishing operation between the switch bit and the main contact.
As a preferable scheme of the present invention, an air inlet check valve is disposed inside each air inlet pipe, an air outlet check valve is disposed inside each air outlet pressurizing pipe, the lower surface of the magnetic related component and the upper surface of the electromagnet are both fixed on the outer surface of the air storage bag, the inside of the air storage bag is hollow corresponding to the extrusion range of the magnetic related component, and the air storage bag ejects dry air from the air outlet pressurizing pipe under the extrusion action of the magnetic related component.
As a preferred scheme of the present invention, the gas storage air bags are located below the switch tool bit, each of the gas outlet pressurizing pipelines and the gas storage air bags form a bending state, the gas outlet nozzle of each of the gas outlet pressurizing pipelines faces the movable end of the switch tool bit, and the gas outlet directions of all the gas outlet pressurizing pipelines converge together at the position of the main contact to form an intersection point.
In order to solve the technical problems, the invention further provides the following technical scheme: the utility model provides a circuit breaker, the circuit breaker includes insulating housing, sets up inlet wire end and setting on the insulating housing are in leading-out terminal on the insulating housing, the inlet wire end with be equipped with the switch tool bit between the leading-out terminal, foretell electromagnetic type quick-release device has, the internal surface of insulating housing is equipped with and is used for supporting gas storage gasbag bears the baffle, it corresponds on the baffle to bear the position of electro-magnet is equipped with the through hole, the tip of electro-magnet passes the through hole with the gas storage gasbag is connected.
As a preferred scheme of the present invention, a connecting rod is hinged to a side surface of the insulating housing above the bearing partition plate at a position corresponding to the outlet plenum duct, a tail end of the connecting rod is connected to the outlet plenum duct through a facing adhesive layer, and a stopper is disposed on a side surface of the insulating housing at a lower end of the connecting rod, the stopper being used for limiting a position of the outlet plenum duct when the outlet plenum duct is in a non-inflated state.
As a preferable aspect of the present invention, a side surface of the insulation case has an opening below the connection rod, and an end of the air intake duct is installed in the opening to circulate intake air.
Compared with the prior art, the invention has the following beneficial effects:
the invention realizes the dual functions of electromagnetic tripping and air-blast arc extinguishing, and utilizes the downward movement of the magnetic metal block to extrude the gas in the gas storage airbag in the implementation process of the electromagnetic tripping, thereby synchronously realizing the arc extinguishing work, and does not need to carry out structure and gas circuit transformation on the tripping device in the prior art, the implementation mode is simple, the implementation mode of the tripping operation is safer, and no new compressed air power is needed to be added, so that the whole tripping device with the tripping and arc extinguishing functions is more centralized, the increase of the volume of the circuit breaker is avoided, and the installation and the use are convenient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary and that other implementation drawings may be derived from the provided drawings by those of ordinary skill in the art without inventive effort.
Fig. 1 is a schematic structural diagram of a trip device in a closed state according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an open state of a trip device according to an embodiment of the present invention;
FIG. 3 is a schematic view of a lift hinge rod according to an embodiment of the present invention;
fig. 4 is a schematic top view of a metal block according to an embodiment of the present invention;
fig. 5 is a schematic side sectional view of a gas blowing arc extinguishing assembly according to an embodiment of the present invention;
fig. 6 is a schematic diagram of an overall side sectional structure of a circuit breaker according to an embodiment of the present invention;
fig. 7 is a schematic side sectional view of a gas blowing arc extinguishing assembly according to an embodiment of the present invention.
The reference numerals in the drawings denote the following, respectively:
1-an electromagnet; 2-a magnetic association component; 3-a blowing arc-extinguishing component; 4-an insulating housing; 5-switching the cutter head; 6-bearing partition board; 7-a through hole; 8-a connecting rod; 9-resisting block; 10-opening;
21-a metal block; 22-lifting the hinge rod; 23-a limiting vertical plate; 24-a rack bar; 25-a support channel; 26-a limiting guide post; 27-a compression spring; 28-a limit pull rope;
211-light insulating blocks; 212-magnetic metal plate; 213-hollowing out the cutting groove; 214-a force-bearing block; 215-an associated lever;
221-a first vertical bar; 222-a second vertical bar;
31-gas storage balloon; 32-an outlet plenum duct; 33-an air inlet duct; 34-drying the bag; 35-air inlet one-way valve; 36-air outlet one-way valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
As shown in fig. 1 and fig. 2, the present invention provides an electromagnetic quick release, in this embodiment, the release specifically uses the electromagnetic principle to perform an overcurrent breaking process, and when the current is too high, the breaking current easily causes the switch bit to connect with the contact to generate an arc, and in this embodiment, in the overcurrent breaking process, the switch bit is driven to move to generate a pressure on the airbag, so as to extrude the gas inside the airbag into a compressed gas to perform an arc quenching process.
The electromagnetic quick tripping device specifically comprises a plurality of electromagnets 1 which are distributed in series and are arranged close to a switch tool bit 5, and magnetic association components 2 which are arranged between all the electromagnets 1 and the switch tool bit 5, wherein a blowing arc-extinguishing component 3 is arranged below the magnetic association components 2, and air outlet nozzles of the blowing arc-extinguishing component 3 face the switch tool bit 5.
All electromagnets 1 and the switch tool bit 5 are connected in parallel on the same electrified circuit, the magnetic force generated by the electromagnets 1 adsorbs the magnetic association component 2 to move, and the switch tool bit 5 is driven by the magnetic association component 2 to be separated from a main contact of the electrified circuit so as to break the electrified circuit.
The magnetic association component 2 presses the air blowing and arc extinguishing component 3 when moving, so that the air outlet pressurizing pipeline 32 of the air blowing and arc extinguishing component 3 generates compressed air, and the compressed air performs air blowing and arc extinguishing operation on the electric arc between the switch tool bit 5 and the main contact.
The working principle of the existing electromagnetic release is as follows: the armature is arranged above the electromagnet through the counterforce spring, when normal current passes through the circuit, the electromagnetic force generated by the electromagnet is smaller than the pulling force of the counterforce spring, the armature cannot be attracted by the electromagnet, and the circuit breaker normally operates. When short-circuit fault occurs in the circuit, the current exceeds a plurality of times of normal current, the electromagnetic force generated by the electromagnet is larger than the acting force of the counterforce spring, the armature is attracted by the electromagnet, and the armature pushes the switch tool bit to release the main contact through a transmission mechanism such as a pull rod.
Different from the release in the prior art, this embodiment is at armature, increase the arc extinguishing subassembly 3 of blowing between the magnetism related subassembly 2 in this embodiment and the electro-magnet promptly, the arc extinguishing subassembly 3 of blowing stores gas, the electric current of power-on circuit is too big, when the electromagnetic force that the electro-magnet produced is very big, magnetism related subassembly 2 moves down by the effect of electro-magnet 1, then can extrude the arc extinguishing subassembly 3 of blowing, make the gas pressurized in the arc extinguishing subassembly 3 of blowing form compressed gas and discharge from giving vent to anger in the pressure boost pipeline 32, and compressed gas takes place simultaneously with the work that switch tool bit 5 breaks away from the main contact, consequently realize the air-blast operation to the main contact position.
And after the current of the power-on line resumes, the magnetic force that electro-magnet 1 produced is very little, and magnetism related component 2 receives self bounce-back effort and electro-magnet 1 separation, because the arc extinguishing subassembly 3 that blows at this moment is the negative pressure state inside, consequently the arc extinguishing subassembly 3 that blows will inflate automatically because of the pressure differential, and until the arc extinguishing subassembly 3 that blows inside and outside atmospheric pressure is the same, thereby realize the automatic inflation operation to wait the next cycle to cut off with the arc operation is blown out to gas.
Specifically, the magnetic association assembly 2 comprises a metal block 21 arranged between the electromagnet 1 and the switch cutter head 5, and a lifting hinge rod 22 arranged at the upper end of the metal block 21, wherein the other end of the lifting hinge rod 22 is connected with the end of the switch cutter head 5 far away from the hinged position.
Two parallel sides of metal block 21 are equipped with spacing riser 23, and two parallel sides of metal block 21 are equipped with at least one cradling piece 24 that reciprocates along spacing riser 23, and metal block 21 passes through cradling piece 24 and reciprocates along the support channel 25 of spacing riser 23 in.
The inside of supporting channel 25 is equipped with spacing guide pillar 26, and the surface at spacing guide pillar 26 is established to the cradling piece 24 cover, and the lower surface of cradling piece 24 is equipped with respectively with the compression spring 27 of the support channel 25 end connection that corresponds, and the edge of cradling piece 24 is equipped with the spacing stay cord 28 that is in compression spring 27 periphery, and cradling piece 24 keeps quiescent condition under the combined action of compression spring 27 and spacing stay cord 28.
The magnetic related component 2 has the same function as an armature in the prior art and serves as a transmission part between the electromagnet 1 and the switch tool bit 5, when the current of the electromagnet 1 is suddenly increased, the electromagnet 1 firstly adsorbs the magnetic related component 2 to move, the support rod 24 extrudes the compression spring 27 below the support rod to be compressed until the metal block 21 is contacted with the electromagnet 1 to be adsorbed and fixed, and the upper end of the metal block 21 drives the switch tool bit 5 to rotate around the hinged end through the lifting hinged rod 22 to cut off the passage.
When the current of the electromagnet 2 is recovered, the adsorption force of the electromagnet 1 on the metal block 21 is reduced, the electromagnet 1 is rebounded to the original position under the action of the compression spring 27, and the upper end of the metal block 21 pushes up the switch bit 5 through the lifting hinge rod 22 to be communicated with the passageway around the hinged end.
The limiting pull rope 28 enables the support rod 24 to be quickly restored to the original position, and the problem that the support rod 24 is elastically moved up and down under the action of the compression spring 27 to cause mistaken power failure is avoided.
It should be further noted that the metal block 21 is released from the attraction force of the electromagnet 1 by the reaction force of the compression spring 27, thereby returning to the home position and energizing the switch bit 5 through the line. In order to ensure the functions of stably separating the metal block 21 from the electromagnet 1 and safely keeping the distance, the metal block 21 is designed to be a light hollow structure in the present embodiment, so that the metal block 21 is light in weight and is quickly and safely returned to the original position under the action of the compression spring 27, and the problem of mistaken power failure caused by repeated up-down bouncing is avoided.
As shown in fig. 3, the metal block 21 includes a light insulating block 211 and a magnetic metal plate 212 disposed at a lower end of the light insulating block 211, and the electromagnet 1 attracts the magnetic metal plate 212 to drive the switch bit 5 to disengage from the main contact. The magnetic metal plate 212 is provided with a plurality of hollow cutting grooves 213, and the hollow cutting grooves 213 cut the magnetic metal plate 212 into stress blocks 214 only corresponding to the electromagnets 1, and two adjacent magnetic metal plates 212 are connected by a linking rod 215 formed by cutting the hollow cutting grooves 213.
In order to reduce the weight of the metal block 21 in this embodiment, the metal block 21 is divided into a light insulating block 211 and a magnetic metal plate 212, the light insulating block 211 is used to reduce the overall weight of the metal block 21, the magnetic metal plate 212 is designed to reduce the mass, the magnetic metal plate 212 is designed to be in a hollow state, the position of the magnetic metal plate 212 corresponding to the electromagnets 1 is a stress block 214 as a plane, and the position of the magnetic metal plate 212 corresponding to the two electromagnets 1 is connected by a connecting rod 215, so that the overall weight of the magnetic metal plate 212 is light, and a normal adsorption function can be realized, and the connecting rod 215 and the stress block 214 which are integrally formed solve the installation operation between the two magnetic metal plates 212.
The lifting hinge rod 22 comprises a first vertical rod 221 fixed on the upper surface of the light insulating block 211 and a second vertical rod 222 vertical to the switch bit 5, and the first vertical rod 221 and the second vertical rod 222 are hinged.
When the light insulating block 211 moves down, the switch tool bit 5 is driven to be separated from the main contact through the first vertical rod 221 and the second vertical rod 222, and when the light insulating block 211 moves up to be reset, the switch tool bit 5 is driven to be communicated with the main contact again through the first vertical rod 221 and the second vertical rod 222.
As shown in fig. 4 and 5, the air blowing and arc extinguishing assembly 3 includes an air storage bag 31 disposed between the electromagnet 1 and the magnetic association assembly 2, a plurality of air outlet pressurization pipes 32 disposed on the air storage bag 31, and a plurality of air inlet pipes 33 disposed on the air storage bag 31, a plurality of drying bags 34 uniformly distributed are disposed inside the air storage bag 31, air input into the air inlet pipes 33 is dried by the drying bags 34, and the dried air in the air storage bag 31 is ejected out through the air outlet pressurization pipes 32 under the squeezing action of the magnetic association assembly 2, so as to achieve arc extinguishing operation between the switch bit 5 and the main contact.
When the light insulating block 211 moves downwards to drive the switch tool bit 5 to be separated from the main contacts, the air storage airbag 31 between the magnetic metal plate 212 and the electromagnet 1 is extruded, air in the air storage airbag 31 is extruded into compressed air, the compressed air is sprayed out from the air outlet pressurization pipeline 32, and air-blast arc extinguishing treatment is carried out on electric arcs generated between the main contacts.
Therefore, the dual functions of electromagnetic tripping and air-blast arc extinguishing are realized by the implementation mode, in the implementation process of electromagnetic tripping, the downward movement of the magnetic metal block 212 is utilized to extrude the gas in the gas storage airbag 31, thereby synchronously realizing arc extinguishing work, the structure and the air circuit transformation of the tripping device in the prior art are not needed, the implementation mode is simple, the implementation mode of tripping operation is safer, new compressed air power is not needed to be added, the whole tripping device with the tripping and arc extinguishing functions is more centralized, the increase of the volume of the circuit breaker is avoided, and the installation and the use are convenient.
As a preferred embodiment, the air storage bag 31 is located below the switch tool bit 5, each air outlet pressurizing pipeline 32 and the air storage bag 31 form a bending state, the air outlet nozzle of each air outlet pressurizing pipeline 32 faces the movable end of the switch tool bit 5, and the air outlet directions of all the air outlet pressurizing pipelines 32 converge together at the position of the main contact point to form an intersection point.
In order to increase the efficiency of air-blast arc extinguishing, this embodiment assembles all the directions of giving vent to anger of the supercharged pipeline 32 as an nodical jointly in the position of main contact, and the direction of giving vent to anger of the supercharged pipeline 32 of giving vent to anger from the expansion end of switch tool bit 5, non-hinged end blowout promptly, consequently this embodiment realizes indulging the blowing effect, and consequently holistic air-blast efficiency improves, and the increase of air-blast dynamics improves the arc extinguishing ability of air-blast arc extinguishing.
An air inlet one-way valve 35 is arranged inside each air inlet pipeline 33, an air outlet one-way valve 36 is arranged inside each air outlet pressurizing pipeline 32, the lower surface of the magnetic association component 2 and the upper surface of the electromagnet 1 are fixed on the outer surface of the air storage air bag 31, the extrusion range of the magnetic association component 2 corresponding to the inside of the air storage air bag 31 is in a hollow state, and the air storage air bag 31 ejects dry air from the air outlet pressurizing pipelines 32 under the extrusion action of the magnetic association component 2.
The dry air in the air storage bag 31 is ejected from the air outlet one-way valve 36 under the downward movement and extrusion of the magnetic metal plate 212, at this time, the air outlet one-way valve 36 is opened, the air inlet one-way valve 35 is closed, and after the magnetic metal plate 212 is moved upward and reset, the air outlet one-way valve 36 is closed, because the air storage bag 31 is in a low-pressure state, the external air is input into the air storage bag 31 through the air inlet pipeline 33, at this time, the air inlet one-way valve 35 is opened, so that the air inlet operation and the air outlet operation of the air storage bag 31 are determined.
As shown in fig. 6 and 7, since the electromagnetic quick release device is generally installed on a circuit breaker, the electromagnetic release at this time is equivalent to a switch for detecting a path current, and the circuit breaker is used for cutting off and connecting a circuit, the circuit breaker includes an insulating housing 4, a wire inlet end arranged on the insulating housing 4, and a wire outlet end arranged on the insulating housing 4, a switch bit 5 is arranged between the wire inlet end and the wire outlet end, a bearing partition plate 6 for supporting an air storage bladder 31 is arranged on an inner surface of the insulating housing 4, a through hole 7 is arranged on the bearing partition plate 6 corresponding to a position of the electromagnet 1, and an end of the electromagnet 1 passes through the through hole 7 to be connected with the air storage bladder 31.
The gas storage bag 31 is disposed between the bearing spacer 6 and the magnetic metal plate 212, and the gas storage bag 31 is cyclically exhausted and inflated between the magnetic metal plate 212 and the gas storage bag 31 for a plurality of times to realize the gas blast arc extinguishing operation.
The position that insulating housing 4's side surface corresponds the supercharged pipeline 32 of giving vent to anger in the top of bearing baffle 6 articulates there is connecting rod 8, the end of connecting rod 8 is connected with the supercharged pipeline 32 of giving vent to anger through the wainscot glue film, insulating housing 4's side surface is equipped with at connecting rod 8's lower extreme and supports dog 9, support dog 9 and be used for limiting the position of the supercharged pipeline 32 of giving vent to anger when not gas filled state, connecting rod 8 is used for limiting the jet-propelled direction of the supercharged pipeline 32 of giving vent to anger, avoid when the air-blowing, compressed air drives the supercharged pipeline 32 swing of giving vent to anger and influences the promptness of arc extinguishing, consequently, compressed air radially blows in along electric arc, then spout through the moving contact, the hole is discharged to the atmosphere, therefore the contact surface is difficult for burning loss by the arc root of electric arc can be blown off the contact surface very fast.
The side surface of the insulating case 4 is provided with an opening 10 below the connecting rod 8, and an end of an intake duct 33 is installed in the opening 10 to circulate intake air.
This embodiment realizes the dual function of electromagnetism dropout and air-blast arc extinguishing, and at electromagnetism dropout's implementation process, utilize moving down of magnetic metal piece to push the gas in the gas storage gasbag, thereby realize the arc extinguishing work in step, need not to carry out structure and circuit transformation to the trip gear among the prior art, implementation is simple, and make the implementation of dropout operation safer, and need not to increase new compressed air power, make the whole more centralized of trip gear who possesses dropout and arc extinguishing function, avoid increasing the volume of circuit breaker, easy to assemble and use.
The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made to the disclosure by those skilled in the art within the spirit and scope of the disclosure, and such modifications and equivalents should also be considered as falling within the scope of the disclosure.
Claims (10)
1. An electromagnetic quick tripping device is characterized by comprising a plurality of electromagnets (1) which are distributed in series and are arranged close to a switch tool bit (5), and magnetic association components (2) which are arranged between all the electromagnets (1) and the switch tool bit (5), wherein a blowing arc-extinguishing component (3) is arranged below the magnetic association components (2), and gas outlet nozzles of the blowing arc-extinguishing component (3) face the switch tool bit (5);
electro-magnet (1) with switch tool bit (5) parallel connection is on same circular telegram circuit, the electromagnetic force that electro-magnet (1) produced adsorbs magnetism association subassembly (2) remove, just switch tool bit (5) are in under the drive of magnetism association subassembly (2) with the main contact of circular telegram circuit breaks away from with disconnection circular telegram circuit, just extrusion when magnetism association subassembly (2) remove blow arc extinguishing subassembly (3), so that blow gas the pressurized conduit (32) of giving vent to anger of arc extinguishing subassembly (3) and produce compressed gas, compressed gas is right electric arc between switch tool bit (5) and the main contact carries out the air blast arc extinguishing operation.
2. The electromagnetic quick release device of claim 1, characterized in that: the magnetic association component (2) comprises a metal block (21) arranged between the electromagnet (1) and the switch cutter head (5), and a lifting hinge rod (22) arranged at the upper end of the metal block (21), wherein the other end of the lifting hinge rod (22) is connected with the end, far away from the hinged position, of the switch cutter head (5);
two parallel side surfaces of the metal block (21) are provided with limiting vertical plates (23), at least one support rod (24) moving up and down along the limiting vertical plates (23) is arranged on the two parallel side surfaces of the metal block (21), and the metal block (21) moves up and down along a support channel (25) of the limiting vertical plates (23) through the support rods (24);
the support structure is characterized in that a limiting guide post (26) is arranged inside the support channel (25), the support rod (24) is sleeved on the outer surface of the limiting guide post (26), compression springs (27) connected with the corresponding end portions of the support channel (25) are respectively arranged on the lower surfaces of the support rod (24), limiting pull ropes (28) located on the peripheries of the compression springs (27) are arranged on the edges of the support rod (24), and the support rod (24) keeps in a static state under the combined action of the compression springs (27) and the limiting pull ropes (28).
3. The electromagnetic quick release device of claim 2, characterized in that: the metal block (21) comprises a light insulating block (211) and a magnetic metal plate (212) arranged at the lower end of the light insulating block (211), and the electromagnet (1) adsorbs the magnetic metal plate (212) to drive the switch tool bit (5) to be separated from the main contact;
be equipped with a plurality of fretwork cutting grooves (213) on magnetic metal sheet (212), just fretwork cutting groove (213) will magnetic metal sheet (212) are cut for stress piece (214) that only corresponds electro-magnet (1), and two adjacent connect through at least one between magnetic metal sheet (212) by fretwork cutting groove (213) cutting forms closes link rod (215).
4. An electromagnetic quick release device according to claim 3, characterized in that: the lifting hinge rod (22) comprises a first vertical rod (221) fixed on the upper surface of the light insulating block (211) and a second vertical rod (222) hinged to the switch tool bit (5), and the first vertical rod (221) is hinged to the second vertical rod (222).
5. The electromagnetic quick release device of claim 1, characterized in that: the air blowing and arc extinguishing component (3) comprises an electromagnet (1) and a plurality of air outlet pressurization pipelines (32) arranged between the magnetic correlation components (2), and a plurality of air inlet pipelines (33) arranged on the air storage airbag (31), wherein a plurality of uniformly distributed drying bags (34) are arranged inside the air storage airbag (31), the air input into the air inlet pipelines (33) passes through the drying treatment of the drying bags (34), and the dry air in the air storage airbag (31) passes through the extrusion action of the magnetic correlation components (2) and is ejected out of the air outlet pressurization pipelines (32) to realize the arc extinguishing operation between the switch tool bit (5) and the main contact.
6. The electromagnetic quick release device of claim 5, wherein: every the inside of admission line (33) is equipped with air inlet check valve (35), and every the inside of the supercharged pipeline of giving vent to anger (32) is equipped with air outlet check valve (36), just the lower surface of magnetism associated subassembly (2) with the upper surface of electro-magnet (1) is all fixed the surface of gas storage gasbag (31), the inside of gas storage gasbag (31) corresponds the extrusion scope of magnetism associated subassembly (2) is hollow state, gas storage gasbag (31) are in follow dry air under the extrusion of magnetism associated subassembly (2) the supercharged pipeline of giving vent to anger (32) blowout.
7. The electromagnetic quick release device of claim 5, wherein: gas storage gasbag (31) are in the below of switch tool bit (5), and every give vent to anger pressurized conduit (32) with gas storage gasbag (31) form crooked state, every the shower nozzle orientation of giving vent to anger pressurized conduit (32) the expansion end of switch tool bit (5), and all the direction of giving vent to anger of pressurized conduit (32) are in the position of main contact assembles jointly for an nodical.
8. The utility model provides a circuit breaker, the circuit breaker includes insulating housing (4), sets up inlet wire end and setting on insulating housing (4) are in leading-out terminal on insulating housing (4), the inlet wire end with be equipped with switch tool bit (5), its characterized in that between the leading-out terminal: the electromagnetic quick release device according to any one of claims 1 to 7, wherein a bearing partition plate (6) for supporting the air storage bag (31) is disposed on an inner surface of the insulating housing (4), a through hole (7) is disposed on the bearing partition plate (6) at a position corresponding to the electromagnet (1), and an end portion of the electromagnet (1) passes through the through hole (7) to be connected with the air storage bag (31).
9. A circuit breaker as claimed in claim 8, wherein: the side surface of the insulating shell (4) is in the position, corresponding to the air outlet pressurization pipeline (32), above the bearing partition plate (6) is hinged with a connecting rod (8), the tail end of the connecting rod (8) is connected with the air outlet pressurization pipeline (32) through a facing adhesive layer, the side surface of the insulating shell (4) is provided with a resisting block (9) at the lower end of the connecting rod (8), and the resisting block (9) is used for limiting the position of the air outlet pressurization pipeline (32) in a non-inflation state.
10. A circuit breaker as claimed in claim 9, characterized in that: an opening (10) is formed in the side surface of the insulating housing (4) below the connecting rod (8), and the end of the air inlet duct (33) is installed in the opening (10) to circulate and suck air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210111063.9A CN114566409B (en) | 2022-01-26 | 2022-01-26 | Electromagnetic type quick tripping device and circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210111063.9A CN114566409B (en) | 2022-01-26 | 2022-01-26 | Electromagnetic type quick tripping device and circuit breaker |
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| CN114566409A true CN114566409A (en) | 2022-05-31 |
| CN114566409B CN114566409B (en) | 2022-11-25 |
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| CN202210111063.9A Active CN114566409B (en) | 2022-01-26 | 2022-01-26 | Electromagnetic type quick tripping device and circuit breaker |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115206705A (en) * | 2022-09-14 | 2022-10-18 | 广州市兆能有限公司 | Relay with arc quenching device |
| CN116844922A (en) * | 2023-06-26 | 2023-10-03 | 国网安徽省电力有限公司巢湖市供电公司 | Safety protection type remote circuit breaker |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101145467A (en) * | 2007-08-16 | 2008-03-19 | 刘天保 | Electronic electromagnetic type intelligent switch |
| CN102683093A (en) * | 2012-06-01 | 2012-09-19 | 徐州志信电气科技有限公司 | Kilovolt-level double-pole double-breakpoint air type isolation change-over switch for mines |
| CN102709083A (en) * | 2012-06-01 | 2012-10-03 | 徐州志信电气科技有限公司 | Mining kilovolt-level double-pole single-breakpoint air isolation reversing switch |
-
2022
- 2022-01-26 CN CN202210111063.9A patent/CN114566409B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101145467A (en) * | 2007-08-16 | 2008-03-19 | 刘天保 | Electronic electromagnetic type intelligent switch |
| CN102683093A (en) * | 2012-06-01 | 2012-09-19 | 徐州志信电气科技有限公司 | Kilovolt-level double-pole double-breakpoint air type isolation change-over switch for mines |
| CN102709083A (en) * | 2012-06-01 | 2012-10-03 | 徐州志信电气科技有限公司 | Mining kilovolt-level double-pole single-breakpoint air isolation reversing switch |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115206705A (en) * | 2022-09-14 | 2022-10-18 | 广州市兆能有限公司 | Relay with arc quenching device |
| CN116844922A (en) * | 2023-06-26 | 2023-10-03 | 国网安徽省电力有限公司巢湖市供电公司 | Safety protection type remote circuit breaker |
| CN116844922B (en) * | 2023-06-26 | 2024-06-11 | 国网安徽省电力有限公司巢湖市供电公司 | Safety protection type remote circuit breaker |
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| Publication number | Publication date |
|---|---|
| CN114566409B (en) | 2022-11-25 |
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