CN116344285B - Intelligent circuit breaker with load characteristic recognition function - Google Patents
Intelligent circuit breaker with load characteristic recognition function Download PDFInfo
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- CN116344285B CN116344285B CN202310204918.7A CN202310204918A CN116344285B CN 116344285 B CN116344285 B CN 116344285B CN 202310204918 A CN202310204918 A CN 202310204918A CN 116344285 B CN116344285 B CN 116344285B
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- assembly
- circuit breaker
- bimetallic strip
- load characteristic
- conducting rod
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- 230000004907 flux Effects 0.000 claims description 32
- 230000005611 electricity Effects 0.000 claims description 17
- 230000006835 compression Effects 0.000 claims description 13
- 238000007906 compression Methods 0.000 claims description 13
- 238000010304 firing Methods 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 230000017525 heat dissipation Effects 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 abstract description 14
- 238000010891 electric arc Methods 0.000 description 10
- 230000003068 static effect Effects 0.000 description 9
- 230000008859 change Effects 0.000 description 8
- 230000009471 action Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000005288 electromagnetic effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
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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
- H01H71/14—Electrothermal mechanisms
- H01H71/16—Electrothermal mechanisms with bimetal element
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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
- H01H71/32—Electromagnetic mechanisms having permanently magnetised part
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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
- H01H71/40—Combined electrothermal and 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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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Abstract
The invention discloses an intelligent circuit breaker with a load characteristic identification function, which comprises a shell component, wherein a fixed contact and a handle for controlling on-off operation are arranged in the shell component, the handle is connected with a movable contact matched with the fixed contact through a linkage mechanism, a tripping component is arranged on the left side of the linkage mechanism, and a bimetallic strip for driving the tripping component to work when a circuit current is overloaded is arranged on the left side of the tripping component.
Description
Technical Field
The invention relates to the technical field of circuit breakers, in particular to an intelligent circuit breaker with a load characteristic identification function.
Background
A circuit breaker is an electrical device for protecting an electrical circuit from electrical faults such as overload, short circuit, and ground faults. Its main function is to interrupt the flow of current in the circuit to avoid overload of the circuit or damage to the electrical appliance.
Chinese patent CN101656180B discloses an electromagnetic short-circuit protection circuit breaker, comprising a circuit breaker body, a casing, a handle, a linkage mechanism, a movable contact, a stationary contact, and a short-circuit detection subunit for detecting a short-circuit fault and generating a trigger signal when the short-circuit occurs; the electromagnetic actuating mechanism receives the trigger signal and pushes the linkage mechanism to actuate through electromagnetic actuation so as to separate the movable contact from the stationary contact; chinese patent CN215069858U discloses an electric leakage breaker, including casing, operating device, moving contact, static contact, circuit board, arc extinguishing mechanism, electromagnetism trip protection mechanism and hot trip protection mechanism, can not directional wiring and arc guide, arc extinction, magnetic permeability are good.
Although the patent can detect short-circuit faults and conduct unidirectional wiring, because of the change of electric equipment, even if an old circuit breaker is not damaged, the circuit breakers with different rated currents also need to be replaced, so that resource waste is caused, and meanwhile, when the existing circuit breaker jumps, the existing circuit breaker cannot be forcibly disconnected, so that the electric equipment is protected.
Disclosure of Invention
The invention aims to provide an intelligent circuit breaker with a load characteristic recognition function, so as to solve the problems that forced operation cannot be carried out during jumping and rated current of the circuit breaker cannot be regulated.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an intelligent circuit breaker with load characteristic discernment function, includes the casing subassembly, be equipped with static contact and be used for controlling the handle that break-make electricity was controlled in the casing subassembly, the handle is connected with through the link gear with static contact complex movable contact, the link gear left side is equipped with trip assembly, trip assembly left side is equipped with the bimetallic strip that drives trip assembly work when circuit current is overload, trip assembly bottom is equipped with the short circuit drive assembly that drives trip assembly work when circuit short circuit, bimetallic strip left side is equipped with load characteristic discernment subassembly, load characteristic discernment subassembly includes power supply, control module, the pivot and the one end that are driven by step motor are connected with movable contact electricity, the electric control switch other end is connected with bimetallic strip electricity through the wire, the bimetallic strip bottom is connected with the slide rheostat that is located "L" shape conducting rod left side and is parallel with "L" shape conducting rod electricity through the wire, the slide rheostat other end electricity is connected with the unilateral pivot and with the protection circuit that the zero line electricity is connected, the overcoat is equipped with can sink the handle, bimetallic strip and bimetallic strip have the side wall profile of the side wall of the symmetry, the bimetallic strip is equipped with the inside of rated current sensor profile, the adjustable groove is close to the top of rated current, the adjustable groove is equipped with the side of the bimetallic strip, the right side of the L-shaped conducting rod is provided with a limiting block for limiting the rotation angle of the L-shaped conducting rod, and one end, far away from the adjusting component, of the L-shaped conducting rod is electrically connected with an electricity outlet component.
Preferably, the adjusting component comprises a U-shaped block electrically connected with the bottom of the bimetallic strip, one side of the U-shaped block is electrically connected with a 7-shaped conducting rod, the L-shaped conducting rod is hinged to the top of the 7-shaped conducting rod, the limiting block is arranged on the top of the 7-shaped conducting rod, the bottom of the 7-shaped conducting rod is in sliding connection with the shell component through a sliding chute, the bottom of the 7-shaped conducting rod is rotationally connected with a screw, and the screw is in threaded connection with the shell component; according to the invention, the distance between the bimetallic strip and the tripping assembly is adjusted by arranging the adjusting assembly, so that rated current change during overload is realized, and further, rated current adjustment is realized.
Preferably, the tripping assembly comprises a deflector rod hinged with the shell assembly through a pin shaft, the permanent magnet is arranged at the top of the deflector rod, a first clamping block and a second clamping block are fixedly arranged in the middle of the outer side surface of the deflector rod, and a clamping groove with an L-shaped structure is formed in one side, close to the first clamping block and the second clamping block, of the deflector rod; according to the invention, the tripping assembly is arranged, when current is overloaded, the temperature of the bimetallic strip rises to generate elastic deformation, and the bimetallic strip deforms and extrudes the deflector rod to execute tripping action.
Preferably, the power supply and the control module are electrically connected with each electric control component; the invention supplies power to each electric control component through the power supply and controls each electric control component to work through the control module, thereby realizing various actions.
Preferably, the short circuit driving assembly comprises a fixed pipe, an electromagnetic coil is arranged on the outer side of the fixed pipe in a surrounding manner, two ends of the electromagnetic coil are fixedly provided with leads, one of the leads is fixedly connected with the movable contact, the other lead is electrically connected with the top of the bimetallic strip, a compression bar is arranged in the fixed pipe, a magnet block is fixedly arranged at one end of the compression bar, a firing pin is fixedly arranged in the middle of one end of the magnet block, which is far away from the compression bar, a positioning plate is fixedly arranged at one end of the compression bar, which is close to the magnet block, and is movably connected with the inner wall of one end of the fixed pipe through a spring, and a positioning lug is fixedly arranged at the other end of the compression bar; the invention sets the short circuit driving component, when the current is short-circuited, the protection is carried out by automatic power-off.
Preferably, the electric power supply device further comprises an electric power supply assembly electrically connected with the static contact, wherein the electric power supply assembly comprises a wiring board electrically connected with the static contact, and a second compression bolt penetrating through the shell assembly is arranged at the top of the wiring board; and the power supply assembly is arranged, so that power supply is realized.
Preferably, the power-out assembly comprises a power-out plate, and a first compression bolt penetrating through the shell assembly is arranged at the top of the power-out plate.
Preferably, the arc extinguishing assembly comprises a conductive plate positioned below the stationary contact, and an arc extinguishing seat with a -shaped structure is fixedly arranged at one end of the upper surface of the conductive plate; the invention is convenient for the fixed installation of the arc-extinguishing plate by arranging the arc-extinguishing seat.
Preferably, a plurality of arc-extinguishing plates which are distributed at equal intervals are fixedly arranged in the arc-extinguishing seat, a groove is formed in the middle of one side of each arc-extinguishing plate, extension grooves with a ladder-shaped structure are formed in the inner walls of two sides of each groove, and two symmetrically-distributed heat dissipation through grooves are formed in the upper surface of each arc-extinguishing plate in a penetrating mode; according to the invention, the heat dissipation through groove is arranged, so that the heat dissipation of the arc extinguishing component is facilitated.
Preferably, the shell assembly comprises an outer shell and a cover plate, a square through groove matched with the handle is formed in the outer side face of the outer shell, a wire inlet groove is formed in one end of the outer shell, a wire outlet groove is formed in the other end of the outer shell, and a screw hole matched with the screw is formed in the bottom of the wire outlet groove of the outer shell; the shell assembly is arranged to be in a detachable structure, so that single damaged parts in the circuit breaker can be replaced conveniently.
The invention has the technical effects and advantages that:
1. according to the invention, through the mutual matching of the load characteristic identification component, the bimetallic strip and the like, the current in the load circuit is detected in real time by detecting the change of magnetic flux on the first aspect, and the fault or the cause of the circuit fault of the circuit breaker is detected and determined through the mutual matching of the load characteristic identification component, the bimetallic strip and the like on the second aspect.
2. According to the invention, through the mutual matching between the load characteristic identification component, the bimetallic strip and the like, in the first aspect, after the rated current is adjusted, the resistance value of the sliding rheostat is adjusted, so that electric equipment in a load circuit is simulated, and the corresponding relation between the current and the magnetic flux detected by the magnetic flux sensor is corrected, so that the current detected in real time is accurate, and the error of the current detected in real time due to the adjustment of the rated current is avoided; in the second aspect, even if the circuit breaker is sticky due to the occurrence of dynamic and static contacts, the circuit breaker can still be powered off when jumping occurs, so that electric equipment is protected.
3. According to the invention, the arc extinguishing assembly is arranged and comprises a plurality of arc extinguishing plates, the arc extinguishing plates are arranged on one side of the conducting rod and one side of the conducting block, when the conducting rod is contacted with or separated from the conducting block to generate an electric arc, the electric arc enters the groove on one side of the arc extinguishing plates, and the electric arc is reflected in the groove for multiple times to disappear, so that the electric arc can be extinguished, the damage of the electric arc to other components in the device can be avoided, and the normal use of the device is ensured.
Drawings
FIG. 1 is a schematic view of the three-dimensional overall structure of the present invention.
FIG. 2 is another angular schematic view of the three-dimensional monolithic structure of the present invention.
Fig. 3 is a front view of the internal structure of the housing assembly of the present invention.
Fig. 4 is a three-dimensional schematic view of the internal structure of the housing assembly of the present invention.
Fig. 5 is a schematic structural connection diagram of the trip assembly, the bimetal, the short circuit driving assembly and the load characteristic recognition assembly according to the present invention.
FIG. 6 is an enlarged schematic view of the portion A of FIG. 5 according to the present invention.
Fig. 7 is a schematic view of an elliptical wheel structure according to the present invention.
Fig. 8 is a schematic structural diagram of a short circuit driving assembly according to the present invention.
Fig. 9 is a schematic view of an arc extinguishing assembly according to the present invention.
Fig. 10 is a schematic structural view of a trip assembly according to the present invention.
In the figure: 1. a housing assembly; 101. an outer housing; 102. a cover plate; 103. square through groove; 104. wire inlet groove; 105. a wire outlet slot; 2. a stationary contact; 3. a handle; 4. a linkage mechanism; 5. a movable contact; 6. a trip assembly; 601. a deflector rod; 602. a first clamping block; 603. a second clamping block; 604. a clamping groove; 7. bimetallic strips; 8. a short circuit driving assembly; 801. a fixed tube; 802. an electromagnetic coil; 803. a compression bar; 804. a magnet block; 805. a striker; 806. a positioning plate; 807. positioning the protruding blocks; 9. a load characteristic identification component; 901. a stepping motor; 902. a rotating shaft; 903. an electric control switch; 904. an L-shaped conducting rod; 905. a slide rheostat; 906. an ammeter; 907. a protection circuit; 908. an elliptical wheel; 909. an electric telescopic rod; 910. a magnetic flux sensor; 911. a permanent magnet; 912. a limiting block; 10. an adjustment assembly; 1001. 7-shaped conducting rod; 11. an electricity outlet component; 1101. a wire outlet plate; 1102. a first hold-down bolt; 12. a power supply assembly; 1201. a wiring board; 1202. a second hold-down bolt; 13. an arc extinguishing assembly; 1301. a conductive plate; 1302. arc extinguishing base; 1303. arc extinguishing plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides an intelligent circuit breaker with load characteristic identification function as shown in figures 1 to 10, which comprises a shell component 1, wherein a fixed contact 2 and a handle 3 for controlling on-off power control are arranged in the shell component 1, the handle 3 is connected with a movable contact 5 matched with the fixed contact 2 through a linkage mechanism 4, a tripping component 6 is arranged on the left side of the linkage mechanism 4, a bimetallic strip 7 for driving the tripping component 6 to work when circuit current is overloaded is arranged on the left side of the tripping component 6, a short circuit driving component 8 for driving the tripping component 6 to work when the circuit is short-circuited is arranged at the bottom of the tripping component 6, a load characteristic identification component 9 is arranged on the left side of the bimetallic strip 7, the load characteristic identification component 9 comprises a power supply, a control module, a rotating shaft 902 driven by a stepping motor 901 and an electric control switch 903, one end of which is electrically connected with the movable contact 5, the other end of the electric control switch 903 is electrically connected with the bimetallic strip 7 through a wire, the bottom end of the bimetallic strip 7 is electrically connected with a sliding rheostat 905 which is positioned on the left side of the L-shaped conducting rod 904 and parallel to the vertical part of the L-shaped conducting rod 904 through a wire, the other end of the sliding rheostat 905 is electrically connected with an ammeter 906, the other end of the ammeter 906 is electrically connected with a protection circuit 907 which is in one-way conduction and is electrically connected with a zero line, an elliptical wheel 908 which can be matched with the handle 3, the bimetallic strip 7, the sliding rheostat 905 and the L-shaped conducting rod 904 is sleeved outside the rotating shaft 902, a sinking groove is formed in the elliptical wheel 908, the inner side wall of the sinking groove is connected with the peripheral side wall of the rotating shaft 902 through two electric telescopic rods 909 which are symmetrically distributed, a magnetic flux sensor 910 is arranged on the side close to the bimetallic strip 7, a permanent magnet 911 matched with the magnetic flux sensor 910 is arranged on the top of the tripping component 6, an adjusting component 10 for adjusting the rated current is arranged on the bottom of the bimetallic strip 7, the top of the adjusting component 10 is hinged with an L-shaped conducting rod 904, the right side of the L-shaped conducting rod 904 is provided with a limiting block 912 for limiting the rotation angle of the L-shaped conducting rod 904, and one end of the L-shaped conducting rod 904, which is far away from the adjusting component 10, is electrically connected with an electricity outlet component 11.
The adjusting component 10 comprises a U-shaped block electrically connected with the bottom of the bimetallic strip 7, one side of the U-shaped block is electrically connected with a 7-shaped conducting rod 1001, an L-shaped conducting rod 904 is hinged to the top of the 7-shaped conducting rod 1001, a limiting block 912 is arranged on the top of the 7-shaped conducting rod 1001, the bottom of the 7-shaped conducting rod 1001 is slidingly connected with the shell component 1 through a sliding chute, a screw is rotationally connected with the bottom of the 7-shaped conducting rod 1001, and the screw is in threaded connection with the shell component 1; according to the invention, the adjusting assembly 10 is arranged, the screw is rotated and presses the 7-shaped conducting rod 1001 inwards to move towards the tripping assembly 6 by rotating the screw, the 7-shaped conducting rod 1001 moves and pushes the bimetallic strip 7 to move towards the tripping assembly 6, so that the distance between the bimetallic strip 7 and the tripping assembly 6 is changed, the rated current change during overload is realized, and the rated current adjustment is further realized.
The tripping assembly 6 comprises a deflector rod 601 hinged with the shell assembly 1 through a pin shaft, a permanent magnet 911 is arranged at the top of the deflector rod 601, a first clamping block 602 and a second clamping block 603 are fixedly arranged in the middle of the outer side surface of the deflector rod 601, and a clamping groove 604 of an L-shaped structure matched with the linkage mechanism 4 is formed in one side, close to the first clamping block 602 and the second clamping block 603, of the deflector rod; according to the invention, by arranging the tripping assembly 6, when current is overloaded, the temperature of the bimetallic strip 7 rises to generate elastic deformation, and the bimetallic strip 7 deforms and extrudes the deflector rod 601 to execute tripping action.
The power supply and the control module are electrically connected with each electric control component; the invention supplies power to each electric control component through the power supply and controls each electric control component to work through the control module, thereby realizing various actions.
The short circuit driving assembly 8 comprises a fixed tube 801, an electromagnetic coil 802 is arranged on the outer side of the fixed tube 801 in a surrounding mode, two ends of the electromagnetic coil 802 are fixedly provided with leads, one of the leads is fixedly connected with a movable contact 5, the other lead is electrically connected with the top of a bimetallic strip 7, a pressing rod 803 is arranged in the fixed tube 801, a magnet block 804 is fixedly arranged at one end of the pressing rod 803, a firing pin 805 is fixedly arranged in the middle of one end of the magnet block 804, which is far away from the pressing rod 803, a positioning plate 806 is fixedly arranged at one end of the pressing rod 803, which is close to the magnet block 804, and the positioning plate 806 is movably connected with the inner wall of one end of the fixed tube 801 through a spring, and a positioning lug 807 is fixedly arranged at the other end of the pressing rod 803; when the circuit is short-circuited, the current passing through the electromagnetic coil 802 is increased, at the moment, the electromagnetic coil 802 generates an electromagnetic effect, a magnet block 804 in the electromagnetic coil 802 slides in the fixed pipe 801, the magnet block 804 drives a firing pin 805 and a pressing rod 803 to move, so that the firing pin 805 collides with the deflector rod 601, the deflector rod 601 is impacted by the firing pin 805 to rotate, a tripping action is performed, the linkage mechanism 4 drives the movable contact 5 to move, the movable contact 5 is separated from the fixed contact 2, and at the moment, the internal circuit of the device can be cut off.
The outlet assembly 11 comprises an outlet plate 1101, and a first compression bolt 1102 penetrating the housing assembly 1 is arranged at the top of the outlet plate 1101. The outgoing wire is passed through the housing assembly 1 and placed on top of the outgoing plate 1101, and then the incoming wire is compressed on top of the outgoing plate 1101 by tightening the first compression bolt 1102, eventually making the outgoing wire form a stable electrical connection with the outgoing plate 1101.
The electric power feeding assembly 12 is electrically connected with the fixed contact 2, the electric power feeding assembly 12 comprises a wiring board 1201 electrically connected with the fixed contact 2, and a second compression bolt 1202 penetrating through the shell assembly 1 is arranged at the top of the wiring board 1201; the incoming wire is passed through the housing assembly 1 and placed into the top of the terminal block 1201 and then compressed against the top of the terminal block 1201 by tightening the second compression bolt 1202, ultimately making a stable electrical connection between the incoming wire and the terminal block 1201.
The arc extinguishing assembly 13 is further included, the arc extinguishing assembly 13 comprises a conducting plate 1301 positioned below the fixed contact 2, and an arc extinguishing seat 1302 with a -shaped structure is fixedly arranged at one end of the upper surface of the conducting plate 1301; the invention facilitates the fixed installation of the arc plates 1303 by providing the arc extinguishing bases 1302.
A plurality of arc-extinguishing plates 1303 which are distributed at equal intervals are fixedly arranged in the arc-extinguishing seat 1302, a groove is formed in the middle of one side of each arc-extinguishing plate 1303, extension grooves with ladder-shaped structures are formed in the inner walls of two sides of the groove, and two symmetrically distributed heat dissipation through grooves are formed in the upper surface of each arc-extinguishing plate 1303 in a penetrating mode; in the process of contacting and separating the movable contact 5 from the fixed contact 2, when an electric arc is generated due to the connection or disconnection of a circuit, the electric arc can enter a groove on one side of the arc extinguishing plate 1303, and the electric arc is reflected in the groove for multiple times, so that the electric arc gradually reduces and disappears in the reflecting process, and the damage of the device caused by the reflection of the electric arc in the device can be avoided.
The shell assembly 1 comprises an outer shell 101 and a cover plate 102, wherein a square through groove 103 matched with the handle 3 is formed in the outer side surface of the outer shell 101, a wire inlet groove 104 is formed in one end of the outer shell 101, a wire outlet groove 105 is formed in the other end of the outer shell 101, and a screw hole matched with a screw is formed in the bottom of the wire outlet groove 105 of the outer shell 101; the outer housing 101 and the cover plate 102 are connected through bolts, and the invention facilitates the replacement of single damaged parts inside the circuit breaker by arranging the housing assembly 1 into a detachable and detachable structure.
When the circuit breaker is used, firstly, an incoming wire is connected into the electric inlet component 12, then an outgoing wire is connected into the electric outlet component 11, meanwhile, the protection circuit 907 is electrically connected with a zero line, after the circuit breaker is connected into the circuit, current enters the static contact 2 through the electric inlet component 12, the handle 3 is pulled at the moment, the handle 3 rotates, the movable contact 5 is driven to move towards the static contact 2 through the linkage mechanism 4, the movable contact 5 is finally abutted against the static contact 2, at the moment, the current on the movable contact 5 reaches the conducting rod through the conducting block, the current on the conducting rod can reach the bimetallic strip 7 through the connecting wire and the electromagnetic coil 802, and the current on the bimetallic strip 7 enters the circuit through the electric outlet component 11, so that the conduction of the circuit can be realized.
During the process of current passing through the circuit breaker, the bimetallic strip 7 generates heat due to the passage of current, when the bimetallic strip 7 heats, the bimetallic strip 7 deforms around a deformation area, so that the bending of the top end of the bimetallic strip 7 moves towards the trip assembly 6, the bimetallic strip 7 moves to drive the magnetic flux sensor 910 to move towards the trip assembly 6, the magnetic flux detected by the magnetic flux sensor 910 increases, the magnetic flux detected by the magnetic flux sensor 910 is converted into the current in the load circuit due to the fact that the magnetic flux and the current in the load circuit are in a certain correlation, the current is transmitted to the mobile terminal in real time, the current in the load circuit is detected by detecting the change of the magnetic flux, when the current in the load circuit is larger than the rated current, under the continuous deformation effect of the heating of the bimetallic strip 7, so that the bimetallic strip 7 extrudes the tripping component 6 to execute tripping action and the handle 3 is restored to the state before electrifying, meanwhile, the movable contact 5 is separated from the fixed contact 2, the magnetic flux detected by the magnetic flux sensor 910 is gradually increased in the process, the controller judges that the circuit breaker is automatically powered off due to current overload and then is transmitted to the mobile terminal through the communication network, thereby reminding a user to reasonably distribute electric appliance use, avoiding the situation of current overload again, after the circuit breaker is powered off, when the magnetic flux detected by the magnetic flux sensor 910 is gradually reduced to an initial value, namely, when the magnetic flux detected by the magnetic flux sensor 910 is not deformed, the magnetic flux detected by the magnetic flux sensor 910 is completely dispersed after the power is stopped, the control module returns to the initial state, then the control module rotates by controlling the stepping motor 901, the stepping motor 901 rotates and drives the rotating shaft 902 to rotate, the rotating shaft 902 rotates to drive the electric telescopic rod 909 to rotate, the electric telescopic rod 909 rotates to drive the elliptical wheel 908 to rotate, meanwhile, the electric telescopic rod 909 at the top is controlled to stretch, and meanwhile, the electric telescopic rod 909 at the bottom is controlled to shrink, so that the elliptical wheel 908 rotates and moves upwards, the elliptical wheel 908 is abutted against the handle 3, the handle 3 is pushed to rotate, and the circuit breaker is electrified.
When a circuit is short-circuited, the current passing through the electromagnetic coil 802 increases, at the moment, the electromagnetic coil 802 generates an electromagnetic effect, a magnet block 804 in the electromagnetic coil 802 slides in the fixed pipe 801, the magnet block 804 drives a firing pin 805 and a pressing rod 803 to move, the firing pin 805 collides with the deflector rod 601, the deflector rod 601 rotates due to collision of the firing pin 805, the deflector rod 601 rotates to execute a tripping action, the handle 3 is enabled to recover to a state before being electrified, meanwhile, the movable contact 5 is separated from the fixed contact 2, the magnetic flux detected by the magnetic flux sensor 910 suddenly decreases, and the controller judges that the circuit breaker is automatically powered off due to the short circuit and then is transmitted to the mobile terminal through a communication network, so that a user is reminded of checking incoming lines of the circuit to remove faults, and damage to electrical equipment caused by subsequent use is avoided.
When the circuit breaker jumps, the situation that the magnetic flux detected by the magnetic flux sensor 910 is reduced continuously and repeatedly occurs in the process, the control module judges that the circuit breaker fails and cannot be automatically powered off, then the control module rotates by controlling the stepping motor 901, the stepping motor 901 rotates and drives the rotating shaft 902 to rotate, the rotating shaft 902 rotates and drives the electric telescopic rod 909 to rotate, the electric telescopic rod 909 at the top is controlled to shrink, and meanwhile the electric telescopic rod 909 at the bottom is controlled to stretch, so that the elliptical wheel 908 rotates while moving downwards and inserting the left side of the L-shaped conducting rod 904, and the L-shaped conducting rod 904 is powered off from the power-off assembly 11 along with the rotation, so that when the circuit breaker jumps, a load circuit can still be disconnected through the load characteristic identification assembly 9, the protection of a load electronic circuit is realized, and the situation that equipment is repeatedly powered on and off due to the fact that the circuit breaker cannot be disconnected is avoided.
When the rated current incoming line of the circuit breaker needs to be adjusted, firstly, the screw is rotated and inwards extruded to move the L-shaped conducting rod 904 to the side of the tripping assembly 6, the L-shaped conducting rod 904 moves and pushes the bimetallic strip 7 to move to the side of the tripping assembly 6, so that the change of the distance between the bimetallic strip 7 and the tripping assembly 6 is realized, the rated current change during overload is realized, and the adjustment of the rated current is further realized; after adjustment, the control module controls the stepping motor 901 to rotate, the stepping motor 901 rotates and drives the rotating shaft 902 to rotate, the rotating shaft 902 rotates and drives the electric telescopic rod 909 to rotate, the electric telescopic rod 909 rotates and drives the elliptical wheel 908 to rotate, simultaneously controls the electric telescopic rod 909 at the top to shrink, simultaneously controls the electric telescopic rod 909 at the bottom to stretch, thereby enabling the elliptical wheel 908 to rotate while moving downwards and inserting the left side of the L-shaped conducting rod 904, and then drives the L-shaped conducting rod 904 to rotate along with the rotation, the L-shaped conducting rod 904 rotates to cut off power to the power supply assembly 11, then controls the electric telescopic rod 909 at the top to stretch, simultaneously controls the electric telescopic rod 909 at the bottom to shrink, simultaneously controls the stepping motor 901 to rotate reversely, enables the electric telescopic rod 909 at the bottom to contact with the sliding block of the sliding rheostat 905, then controls the electric control switch 903 to be closed, the current is led to reach zero line through the fixed contact 2, the electric control switch 903, the bimetallic strip 7, the sliding rheostat 905 and the protection current, then the stepping motor 901 is controlled to rotate positively, meanwhile, the electric telescopic rod 909 at the top is controlled to shrink, meanwhile, the electric telescopic rod 909 at the bottom is controlled to stretch, thus the sliding block on the sliding rheostat 905 is pushed to move downwards, the resistance value of the sliding rheostat 905 is changed, the sliding block is deformed thermally, the bimetallic strip 7 deforms around a deformation area, the corresponding relation between the magnetic flux detected by the magnetic flux sensor 910 and the default current is changed due to the change of the position of the bimetallic strip 7, the resistance value of the sliding rheostat 905 is adjusted, the corresponding relation between the current and the magnetic flux detected by the magnetic flux sensor 910 is simulated, the corresponding relation between the current and the magnetic flux detected by the magnetic flux sensor 910 is corrected, therefore, the current detected in real time is accurate, and errors caused by adjusting rated current in real time are avoided.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (10)
1. The utility model provides an intelligent circuit breaker with load characteristic discernment function, includes the casing subassembly, its characterized in that, be equipped with stationary contact and the handle that is used for controlling break-make electricity to control in the casing subassembly, the handle is connected with through the link gear with stationary contact complex movable contact, the link gear left side is equipped with trip assembly, trip assembly left side is equipped with the bimetallic strip that drives trip assembly work when circuit current is overload, trip assembly bottom is equipped with the short circuit drive assembly that drives trip assembly work when circuit short circuit, bimetallic strip left side is equipped with load characteristic discernment subassembly, load characteristic discernment subassembly includes power supply, control module, the pivot and the one end that are driven by step motor are connected with movable contact electricity, the electric control switch other end is connected with bimetallic strip electricity through the wire, the bimetallic strip bottom is connected with the slide rheostat that is located "L" shape conducting rod left side and is parallel with "L" shape conducting rod electricity through the wire, the slide rheostat other end electricity is connected with the ampere meter, the ampere meter other end electricity is connected with unidirectional conduction and with the protection circuit that the zero line electricity is connected, the overcoat is equipped with the handle, the pivot that can drive trip assembly, bimetallic strip and the side wall that is equipped with the side wall that the side wall is equipped with the symmetry is equipped with the bimetallic strip, the adjustable groove is close to the top of adjustable groove that the side of bimetallic strip, the adjustable top is equipped with the side wall that the adjustable magnetic flux of bimetallic strip is equipped with the side of heavy-piece, the adjustable groove, the right side of the L-shaped conducting rod is provided with a limiting block for limiting the rotation angle of the L-shaped conducting rod, and one end, far away from the adjusting component, of the L-shaped conducting rod is electrically connected with an electricity outlet component.
2. The intelligent circuit breaker with load characteristic identification function according to claim 1, wherein the adjusting component comprises a U-shaped block electrically connected with the bottom of the bimetallic strip, a 7-shaped conducting rod is electrically connected to one side of the U-shaped block, an L-shaped conducting rod is hinged to the top of the 7-shaped conducting rod, the limiting block is arranged on the top of the 7-shaped conducting rod, the bottom of the 7-shaped conducting rod is slidably connected with the shell component through a sliding groove, and a screw is rotationally connected to the bottom of the 7-shaped conducting rod and is in threaded connection with the shell component.
3. The intelligent circuit breaker with load characteristic identification function according to claim 1, wherein the tripping assembly comprises a deflector rod hinged with the shell assembly through a pin shaft, the permanent magnet is arranged at the top of the deflector rod, a first clamping block and a second clamping block are fixedly arranged in the middle of the outer side surface of the deflector rod, and a clamping groove with an L-shaped structure is formed in one side, close to each other, of the first clamping block and the second clamping block.
4. The intelligent circuit breaker with load characteristic identification function according to claim 1, wherein the power supply and the control module are electrically connected with each electric control component.
5. The intelligent circuit breaker with load characteristic identification function according to claim 1, wherein the short circuit driving assembly comprises a fixed tube, an electromagnetic coil is arranged on the outer side of the fixed tube in a surrounding mode, two ends of the electromagnetic coil are fixedly provided with leads, one of the leads is fixedly connected with a movable contact, the other lead is electrically connected with the top of a bimetallic strip, a pressing rod is arranged in the fixed tube, a magnet block is fixedly arranged at one end of the pressing rod, a firing pin is fixedly arranged in the middle of one end of the pressing rod, far away from the pressing rod, a positioning plate is fixedly arranged at one end of the pressing rod, close to the magnet block, and is movably connected with the inner wall of one end of the fixed tube through a spring, and a positioning lug is fixedly arranged at the other end of the pressing rod.
6. The intelligent circuit breaker with load characteristic identification function according to claim 1, further comprising a power feeding assembly electrically connected with the stationary contact, wherein the power feeding assembly comprises a wiring board electrically connected with the stationary contact, and a second compression bolt penetrating through the housing assembly is arranged on the top of the wiring board.
7. The intelligent circuit breaker with load characteristic identification function according to claim 1, wherein the outgoing electrical component comprises an outgoing line board, and a first hold-down bolt penetrating through the housing component is arranged on top of the outgoing line board.
8. The intelligent circuit breaker with load characteristic identification function according to claim 1, further comprising an arc extinguishing assembly, wherein the arc extinguishing assembly comprises a conductive plate positioned below the stationary contact, and an arc extinguishing seat of a -shaped structure is fixedly arranged at one end of the upper surface of the conductive plate.
9. The intelligent circuit breaker with load characteristic identification function according to claim 8, wherein a plurality of arc-extinguishing plates which are distributed at equal intervals are fixedly arranged in the arc-extinguishing base, grooves are formed in the middle of one side of each arc-extinguishing plate, extension grooves with stepped structures are formed in inner walls of two sides of each groove, and two symmetrically-distributed heat dissipation through grooves are formed in the upper surfaces of the arc-extinguishing plates in a penetrating mode.
10. The intelligent circuit breaker with load characteristic identification function according to claim 1, wherein the shell assembly comprises an outer shell and a cover plate, a square through groove matched with the handle is formed in the outer side face of the outer shell, a wire inlet groove is formed in one end of the outer shell, a wire outlet groove is formed in the other end of the outer shell, and a screw hole matched with the screw is formed in the bottom of the wire outlet groove of the outer shell.
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| CN202310204918.7A CN116344285B (en) | 2023-03-06 | 2023-03-06 | Intelligent circuit breaker with load characteristic recognition function |
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| CN202310204918.7A CN116344285B (en) | 2023-03-06 | 2023-03-06 | Intelligent circuit breaker with load characteristic recognition function |
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| CN116344285B true CN116344285B (en) | 2023-11-03 |
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| CN117214523B (en) * | 2023-11-09 | 2024-01-30 | 国网辽宁省电力有限公司 | Power distribution network line power parameter measurement equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101416264A (en) * | 2006-03-29 | 2009-04-22 | 土星情报通信株式会社 | Circuits breaker having resetting function and breaking function for abnormal current |
| CN110137048A (en) * | 2019-05-30 | 2019-08-16 | 天津市中力神盾电子科技有限公司 | Intelligent circuit breaker |
| CN115004328A (en) * | 2020-02-07 | 2022-09-02 | 伊顿智能动力有限公司 | Circuit breaker and method for operating a circuit breaker |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6897747B2 (en) * | 2002-05-10 | 2005-05-24 | Joseph T. Brandon | Circuit breaker |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101416264A (en) * | 2006-03-29 | 2009-04-22 | 土星情报通信株式会社 | Circuits breaker having resetting function and breaking function for abnormal current |
| CN110137048A (en) * | 2019-05-30 | 2019-08-16 | 天津市中力神盾电子科技有限公司 | Intelligent circuit breaker |
| CN115004328A (en) * | 2020-02-07 | 2022-09-02 | 伊顿智能动力有限公司 | Circuit breaker and method for operating a circuit breaker |
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