CN109378715B - Intelligent distribution box and wiring method thereof - Google Patents

Intelligent distribution box and wiring method thereof Download PDF

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Publication number
CN109378715B
CN109378715B CN201811419253.7A CN201811419253A CN109378715B CN 109378715 B CN109378715 B CN 109378715B CN 201811419253 A CN201811419253 A CN 201811419253A CN 109378715 B CN109378715 B CN 109378715B
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CN
China
Prior art keywords
circuit board
pole
circuit
switch
module
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Application number
CN201811419253.7A
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Chinese (zh)
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CN109378715A (en
Inventor
孙文化
李选正
刘泽辰
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Shenzhen Space Digital Technology Co ltd
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Shenzhen Shikong Technology Group Co ltd
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Priority to CN201811419253.7A priority Critical patent/CN109378715B/en
Publication of CN109378715A publication Critical patent/CN109378715A/en
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/24—Circuit arrangements for boards or switchyards
    • 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
    • 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
    • H01H71/66—Power reset mechanisms
    • H01H71/70—Power reset mechanisms actuated by electric motor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/46—Boxes; Parts thereof or accessories therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/46—Boxes; Parts thereof or accessories therefor
    • H02B1/48—Mounting of devices therein
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H02H9/044—Physical layout, materials not provided for elsewhere

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Patch Boards (AREA)
  • Breakers (AREA)

Abstract

The utility model provides an intelligent distribution box and wiring method thereof, this intelligent distribution box includes power module, master switch, at least one branch switch and communication module, and their lateral part all is furnished with first communication interface, power module the master switch branch switch with communication module combines side by side, and just through first communication interface grafting realizes communication connection, communication module still disposes the second communication interface that is used for connecting the network, the branch switch disposes N utmost point incoming wire terminal and N utmost point outgoing wire terminal, and is provided with the intercommunication in inside N utmost point outgoing wire terminal with N utmost point incoming wire terminal's conductor. The wiring method comprises the steps of correspondingly connecting an L-pole incoming line terminal and an N-pole incoming line terminal of each sub-switch with an L-pole outgoing line terminal and an N-pole outgoing line terminal of a main switch through wires, and connecting the L-pole outgoing line terminal and the N-pole outgoing line terminal of each sub-switch with corresponding circuits. The intelligent distribution box is convenient to combine, clear in line and convenient to maintain.

Description

Intelligent distribution box and wiring method thereof
Technical Field
The invention relates to distribution equipment, in particular to a small intelligent distribution box mounted on a wall body, and relates to a wiring method thereof.
Background
The small-sized distribution box for indoor power supply is generally embedded in a wall body and consists of a main switch, at least one sub-switch, a lightning protection module and the like. With the rise of the internet of things, an intelligent distribution box capable of remotely controlling household appliances appears. The existing distribution box is only provided with an incoming line terminal and an outgoing line terminal, and is used for controlling the live wires of the lines, and when the lines are connected, zero lines of all the lines are led from the main switch, so that the lines are disordered, and the on-line maintenance is inconvenient.
Disclosure of Invention
The invention aims to provide an intelligent distribution box.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
an intelligent distribution box, comprising:
a power module which is internally provided with a lightning protection circuit and the side part of which is provided with a first communication interface (100);
the side part of the main switch is provided with a first communication interface;
at least one disconnecting switch, wherein the side part of the disconnecting switch is provided with a first communication interface, one end part is provided with an L pole wire inlet terminal (300) and an N pole wire inlet terminal (200), the other end part is provided with an L pole wire outlet terminal (300 ') and an N pole wire outlet terminal (200'), and a conductor (400) which is communicated with the N pole wire outlet terminal and the N pole wire inlet terminal is arranged inside the disconnecting switch; and
a communication module having a first communication interface and a second communication interface (500);
the power module, the main switch, the sub-switch and the communication module are combined side by side and are connected in a plugging manner through the first communication interface to realize communication connection, and the second communication interface is used for connecting a network.
Preferably, each incoming line terminal and each outgoing line terminal comprise a locking screw rod, the locking screw rod consists of a screw rod head and a screw rod seat, the screw rod head is made of metal, and the screw rod seat is made of insulating materials.
Preferably, the lightning protection circuit includes: the voltage-limiting resistor comprises a first voltage-dependent resistor, a second voltage-dependent resistor, a third voltage-dependent resistor, a transient suppression diode, a first fuse and a second fuse, wherein one end of the transient suppression diode is connected with a ground wire connecting terminal, the other end of the transient suppression diode is respectively connected with one end of the first voltage-dependent resistor and one end of the second voltage-dependent resistor, the other end of the first voltage-dependent resistor is connected with the first fuse to the L pole, the other end of the second voltage-dependent resistor is connected with the second fuse to the N pole, and the third voltage-dependent resistor is connected between the other end of the first voltage-dependent resistor and the other end of the second voltage-dependent resistor.
Preferably, the main switch includes:
two first circuit breakers arranged side by side;
the leakage protection module is arranged at one side of the two first circuit breakers, is electrically connected with the outgoing line terminals of the first circuit breakers, is matched with the contact system of the first circuit breakers through a deflector rod, and is used for detecting leakage current of a circuit and driving the first circuit breakers to enter a brake-separating state when the leakage current exists; and
the first reclosing module is arranged on the other side of the two first circuit breakers, is electrically connected with a current transformer in the first circuit breakers, is connected with a rotating shaft of a handle of the first circuit breakers through a linkage shaft, and is used for detecting current in a circuit and controlling the first circuit breakers to be opened or closed;
the first circuit breaker, the leakage protection module and the first reclosing module are respectively provided with independent shells to form a modularized main switch;
the disconnecting switch includes:
a second circuit breaker; and
the second reclosing module is arranged on one side of the second circuit breaker, is electrically connected with a current transformer in the second circuit breaker, is connected with a rotating shaft of a handle of the second circuit breaker through a linkage shaft, and is used for detecting current in a circuit and controlling the second circuit breaker to be opened or closed;
the second circuit breaker and the second reclosing module are respectively provided with independent shells to form a modularized separating switch; the N pole incoming line terminal, the N pole outgoing line terminal and the conductor are arranged on a shell where the second reclosing module is located.
Preferably, the leakage protection module comprises a second shell (301), a zero sequence current transformer (302), a traction piece (306), a leakage release (311) and a first circuit board (313), wherein an arc-shaped hole (304) is formed in the central area of one side part of the second shell, two electrode holes (314) are formed in the edge area of the second shell, a pin shaft (305) is arranged at one side of the arc-shaped hole in the second shell, and a limiting part (303) and a first accommodating cavity (312) are oppositely arranged at two sides of the pin shaft at the other side of the arc-shaped hole; the first circuit board is arranged in the second shell; the zero sequence current transformer is arranged inside the second shell close to the two electrode holes and is electrically connected with the first circuit board; the traction piece is arranged on the pin shaft, one end of the traction piece passes through the space between the limiting part and the first accommodating cavity, the traction piece is intersected with the arc-shaped hole, and a traction piece reset spring is arranged between the traction piece and the second shell; the electric leakage release is clamped in the first accommodating cavity and is electrically connected with the first circuit board, and an output rod of the electric leakage release is contacted with the traction piece.
Preferably, the traction member (306) comprises a base plate (317) and an axle seat (315) formed on the base plate, one edge of the base plate extends outwards and downwards to form a limit matching part (319) and an output rod matching part (320), the upper end of the output rod matching part (320) extends towards the axle seat and is formed with an arc-shaped deflector rod matching part (318) matched with the deflector rod (211), and a lug (316) for connecting a spring is formed on the base plate.
Preferably, the first reclosing module and the second reclosing module each comprise a third shell (101), a linkage gear (102), a motor (106), a gear set (104) and a second circuit board (108), wherein one inner wall of the third shell is provided with a second accommodating cavity (106') and a plurality of circuit board mounting columns (103), and the other opposite inner wall is provided with a motor pressing part (117) and a circuit board pressing column (118); the linkage gear is arranged in the third shell and is spatially opposite to the rotation center of the breaker operating handle, and a magnetic core and a linkage shaft (107) are arranged on the linkage gear; the motor is clamped in the second accommodating cavity, is pressed by the motor pressing part and is fixed in the third shell, and a worm (105) is arranged on an output shaft of the motor; the gear set is arranged in the third shell and is respectively meshed with the worm and the linkage gear; the second circuit board is fixed in the third shell through the circuit board mounting column and the circuit board pressing column and is electrically connected with the motor, and a Hall switch (115) is arranged on the second circuit board and used for detecting the rotating position of the linkage gear in a matching way with the magnetic core.
Preferably, a first notch (113) through which the motor (106) passes, a second notch (114) through which the gear set (104) passes, and a third notch (116) through which the linkage shaft passes are provided on the second circuit board (108), and the motor, the gear set, and the linkage shaft correspondingly pass through the second circuit board through the first notch, the second notch, and the third notch.
Preferably, the circuit board mounting column (103) comprises a first column (1031) and a positioning pin (1032) formed at the front end of the first column, a pin hole matched with the positioning pin is formed at the front end of the circuit board pressing column (118), a positioning hole is formed in the circuit board, and the circuit board is positioned in a matched manner through the positioning hole and the positioning pin and is clamped and fixed through the circuit board mounting column and the circuit board pressing column.
A wiring method of an intelligent distribution box, wherein the intelligent distribution box is any one of the intelligent distribution boxes, and the wiring method comprises the following steps: the first communication interface is spliced to enable the power module, the main switch, the sub-switch and the communication module to be in communication connection; connecting the second communication interface to gateway equipment through a network cable; the L pole incoming line terminal and the N pole incoming line terminal of each sub-switch are correspondingly connected with the L pole outgoing line terminal and the N pole outgoing line terminal of the main switch through wires, and the L pole outgoing line terminal and the N pole outgoing line terminal of each sub-switch are connected with corresponding circuits.
Compared with the prior art, the invention has at least the following beneficial effects:
the intelligent distribution box is convenient to combine, clear in line and convenient to maintain.
Drawings
FIG. 1 is a schematic diagram of some embodiments of an intelligent distribution box;
FIG. 2 is a schematic diagram of the wiring thereof;
FIG. 3 is a schematic view of the structure of the locking screw of the terminal block;
FIG. 4 is a schematic view of an embodiment of a connection portion of the locking screw tip;
FIG. 5 is a schematic view of another embodiment of a connection portion of a locking screw tip;
FIG. 6 is a circuit diagram of an embodiment of a lightning protection circuit;
FIG. 7 is a block diagram of one embodiment of a master switch;
FIG. 8 is an exploded view of the master switch;
FIG. 9 is an assembled schematic diagram of a motor, linkage gear, and gear set inside a first reclosing module;
FIG. 10 is an assembled schematic diagram of a second circuit board, motor, and gear set;
FIG. 11 is an exploded view of a first reclosing module;
fig. 12 is an assembly schematic diagram of a second circuit board, a circuit board mounting post, and a circuit board pressing post;
fig. 13 is a structural view of the first circuit breaker;
fig. 14 is a schematic view of an internal structure of the first circuit breaker;
FIG. 15 is a schematic view of an embodiment of a contact system;
FIG. 16 is a block diagram of a leakage protection module;
FIG. 17 is a schematic diagram showing an internal structure of the leakage protection module;
FIG. 18 is a schematic structural view of a traction member;
FIG. 19 is a block diagram of the tap changer;
FIG. 20 is an exploded view of the switch;
FIG. 21 is a schematic diagram of a connection terminal and conductors on a second reclosing module;
fig. 22 is a schematic structural view of the middleware.
Detailed Description
The invention is further described below with reference to the drawings and examples.
As shown in fig. 1, the present intelligent distribution box includes: the device comprises a power module, a main switch, a communication module and a plurality of sub-switches. The power module is internally provided with a lightning protection circuit for absorbing pulse current caused by lightning in the power grid.
The side of the power module is provided with a first communication interface 100, and the side of the main switch, the separating switch and the side of the communication module are provided with the first communication interface 100, and the power module, the main switch, the separating switch and the communication module are combined side by side and are connected in an inserting way through the first communication interface 100 to realize communication connection. Therefore, the modules (generally referred to as the main switch, the sub-switch, the communication module and the power module) are not connected through cables, and only the pushing module is needed to enable the first communication interfaces 100 to be connected in an inserting mode, so that the combination is simple and convenient.
A second communication interface 500 is also provided in the communication module for connecting to a network.
One end of the branch switch is provided with an L-pole incoming line terminal 300 and an N-pole incoming line terminal 200, the other end of the branch switch is provided with an L-pole outgoing line terminal 300' and an N-pole outgoing line terminal 200', and a conductor 400 which is communicated with the N-pole incoming line terminal 200 and the N-pole outgoing line terminal 200' is arranged inside the branch switch. Thus, each of the partial switches has a live wire terminal (the terminal is broadly referred to herein as a line in-line terminal and a line out terminal) and a neutral wire terminal, when in wire connection, as shown in fig. 2, the live wire and the neutral wire of line 1 are routed from one of the partial switches, the live wire and the neutral wire of line 2 are routed from one of the partial switches, the live wire and the neutral wire of line 3 are routed from one of the partial switches, and so on, the lines are clear and regular, greatly facilitating the later line inspection.
The main switch, the separate switch and the power supply module all comprise an incoming line terminal and an outgoing line terminal, and the incoming line terminal and the outgoing line terminals all comprise locking screws for locking an external wire and an internal wire on the terminals to realize electric connection. In the prior art, the locking screw rod adopts a screw rod made of metal, and because the screw rod contacts with a wire, the screw rod is electrified, if the screw rod is carelessly touched, an electric shock accident can be caused, in order to avoid electric shock, the prior art is to make the accommodating hole of the screw rod deeper, or increase a protective cover at a terminal, but the appearance of equipment can be influenced, and the electric shock risk still exists. For this purpose, the invention designs a special locking screw, as shown in fig. 3, which consists of a screw head 401 and a screw seat 402, wherein the screw head 401 is made of metal, and the screw seat 402 is made of insulating material, preferably plastic. The threaded portion of the screw is preferably, but not limited to, disposed in the metal portion. Referring to fig. 3, 4 and 5, a connecting portion 4011 is provided at the end of the screw head 401, and the front end of the screw seat 402 is wrapped around the connecting portion 4011 and fusion-bonded to be fixed, thereby integrating the two. In order to enhance the reliability of the connection between the screw head 401 and the screw seat 402 and avoid the detachment of the screw head 401 and the screw seat 402 during screwing, vertical concave-convex stripes 4012 are distributed on the side wall of the connecting portion 4011. In the embodiment shown in fig. 4, the connecting portion 4011 is designed as a cylinder. In the embodiment shown in fig. 5, the connection portion 4011 is designed in an i-shape, and has better reliability.
As shown in fig. 6, the lightning protection circuit used in the preferred embodiment includes: the voltage-sensitive resistor comprises a first voltage-sensitive resistor R11, a second voltage-sensitive resistor R9, a third voltage-sensitive resistor R10, a transient suppression diode G1, a first fuse TF1 and a second fuse TF2, wherein one end of the transient suppression diode G1 is connected with a ground wire connecting terminal, the other end of the transient suppression diode G1 is respectively connected with one end of the first voltage-sensitive resistor R11 and one end of the second voltage-sensitive resistor R9, the other end of the first voltage-sensitive resistor R11 is connected with a first fuse TF1 to an L pole, the other end of the second voltage-sensitive resistor R9 is connected with a second fuse TF2 to an N pole, and the third voltage-sensitive resistor R10 is connected between the other end of the first voltage-sensitive resistor R11 and the other end of the second voltage-sensitive resistor R9. The transient suppression diode has extremely fast response time (subnanosecond level) and quite high surge absorption capacity, and when two ends of the transient suppression diode are subjected to transient high-energy impact, the impedance value between the two ends can be changed from high impedance to low impedance at extremely high speed so as to absorb transient high current, and the voltage between the two ends of the transient suppression diode is clamped at a preset value, so that the following circuit elements are protected from the impact of transient high-voltage spike pulse. The first fuse TF1 and the second fuse TF2 in the circuit can prevent the third piezoresistor R10 from being in short circuit failure to cause fire.
The lightning protection circuit is further provided with a failure detection circuit, the failure detection circuit comprises an optical coupler U3, the optical coupler U3 is connected to two ends of the third piezoresistor R10, and when the lightning protection is normal, the optical coupler U3 is conducted and outputs a low level; when the lightning protection fails, the optical coupler U3 is not conducted and outputs high level, so that the lightning protection circuit can be found out timely after the lightning protection circuit fails.
Referring to fig. 7 and 8, a total switch in one embodiment includes: the first reclosing module 1, the two first circuit breakers 2 and the leakage protection module 3 are provided with decorative covers 4 at the upper ends of the first reclosing module 1, and the left and right side parts are provided with first communication interfaces 100.
Two first circuit breakers 2 are arranged side by side for controlling the live and neutral wires, respectively.
The leakage protection module 3 is disposed at one side of the two first circuit breakers 2, electrically connected with the outgoing line terminals of the first circuit breakers 2 through the auxiliary electrode 215, and matched with the contact system of the first circuit breakers 2 through the deflector 211, and used for detecting the leakage current of the circuit and driving the first circuit breakers 2 to enter a breaking state when the leakage current exists.
The first reclosing module 1 is disposed at the other side of the two first circuit breakers 2, electrically connected with the current transformers in the first circuit breakers 2, and connected with the rotating shaft of the handle of the first circuit breakers 2 through a linkage shaft 107, and is used for detecting current in a circuit and controlling the opening or closing of the first circuit breakers 2.
The first circuit breaker 2, the leakage protection module 3 and the first reclosing module 1 each have an independent housing, constituting a modularized master switch. When a certain module fails, the modularized master switch is adopted, and the failed module is directly replaced, so that the maintenance is very convenient.
Referring to fig. 9, 10 and 11, in one embodiment, the first reclosing module 1 includes a third housing 101, a linkage gear 102, a motor 106, a gear set 104 and a second circuit board 108.
Wherein, a second accommodating cavity 106 'is provided on one inner wall of the third housing 101, a motor pressing portion 117 is provided on the other opposite inner wall, the motor 106 is clamped in the second accommodating cavity 106', and is pressed and fixed by the motor pressing portion 117, i.e. the motor 106 is installed in a clamping manner.
One inner wall of the third casing 101 is further provided with a plurality of circuit board mounting posts 103, the other opposite inner wall is further provided with a circuit board pressing post 118, and the second circuit board 108 is fixed in the third casing 101 through the circuit board mounting posts 103 and the circuit board pressing post 118. In this way, the mounting of the circuit board is simpler. Referring to fig. 12, preferably, the circuit board mounting post 103 includes a first post 1031 and a positioning pin 1032 formed at a front end of the first post 1031, a pin hole matched with the positioning pin 1032 is formed at a front end of the circuit board pressing post 118, a positioning hole is formed in the second circuit board 108, and the second circuit board 108 is matched and positioned through the positioning hole and the positioning pin 1032 and is clamped and fixed through the circuit board mounting post 103 and the circuit board pressing post 118. Therefore, the circuit board can be positioned and fixed without screws, and is more convenient to install and detach.
The linkage gear 102 is spatially opposite to the rotation center of the breaker operating handle, a magnetic core (not shown) and a linkage shaft 107 are arranged on the linkage gear 102, a worm 105 is arranged on an output shaft of the motor 106, the gear set 104 is respectively meshed with the worm 105 and the linkage gear 102, and the linkage shaft 107 is driven to synchronously rotate by the worm 105, the gear set 104 and the linkage gear 102 when the motor works.
The second circuit board 108 is provided with a hall switch 115, the hall switch 115 is matched with a magnetic core on the linkage gear 102, the rotation position of the linkage gear 102 is detected, the rotation position is fed back to the second circuit board, and the motor 106 is controlled to stop after the rotation position reaches a closing position or a separating position.
Referring to fig. 10 and 11, the second circuit board 108 is provided with a first notch 113 through which the motor 106 passes, a second notch 114 through which the gear set 104 passes, and a third notch 116 through which the linkage shaft passes, and the motor 106, the gear set 104, and the linkage shaft correspondingly pass through the second circuit board 108 through the first notch 113, the second notch 114, and the third notch 116. Therefore, the inner parts of the third shell are orderly arranged, and the overall thickness of the reclosing module is smaller, so that the miniaturization of the intelligent switch is facilitated.
Referring to fig. 9 and 11, the gear set 104 is composed of a first gear 110, a second gear 111 and a third gear 112, wherein the first gear 110 has a worm gear portion, and is meshed with the worm 105, the third gear 112 is meshed with the linkage gear 102, and the second gear 111 is meshed with the first gear and the second gear, respectively. In this way, the rotation axis of the motor 106 is perpendicular to the linkage shaft 107, and the motor 106 is vertically installed in the third housing, which is beneficial to reducing the thickness of the third housing.
Referring to fig. 13, 14 and 15, a first circuit breaker 2 according to an embodiment includes: a first housing 201, a short-circuit protection mechanism 203, an overload protection mechanism 212, a contact system 209, an operating handle 207, and an auxiliary electrode 215 mounted within the first housing 201.
An operation handle 207 is mounted in the first housing 201 through a first shaft 206, and a handle portion protrudes from one end of the first housing 201. The contact system 209 is installed in the middle of the first housing 201 through a second shaft 210, and is coupled to the operating handle 207 through a linkage rod 208, and when the operating handle rotates around the first shaft 206, the linkage rod 208 is driven to act, so that the contact system 209 is driven to rotate anticlockwise or clockwise around the second shaft 210 through the linkage rod 208, and opening or closing is achieved.
The contact system 209 is further connected to an overload protection mechanism 212 through another linkage rod 208, where the overload protection mechanism 212 is a bimetal, and when the circuit is in overload failure, the bimetal bends and deforms to the right direction in fig. 14, so as to drive the linkage rod 208 to move to the right, and further drive the contact system 209 to rotate counterclockwise around the second shaft 210, so that the first circuit breaker enters a breaking state.
The short-circuit protection mechanism 203 is an electromagnetic release, a coil of which is connected between the stationary contact and the incoming terminal 202, and an end of the output rod 204 is opposite to the contact system 209, when the circuit is in a short-circuit fault, a magnetic field generated by the coil pushes the output rod 204 to move towards the right direction in fig. 14, and pushes the contact system 209 to rotate anticlockwise around the second shaft 210, so that the first circuit breaker enters a breaking state.
One end of the auxiliary electrode 215 is connected to the output terminal 214, and the other end is penetrated from and perpendicular to a sidewall of the first case 201. In this way, when combined with the leakage protection module 3, the auxiliary electrode 215 can directly extend into the leakage protection module 3, so that the combination is more convenient.
The first shaft 206 is provided with a coupling part 205 along an axial direction thereof, and the coupling part 205 cooperates with the aforementioned coupling shaft 107 (see fig. 9), so that the first reclosing module 1 drives the operating handle 207 to rotate, thereby driving the contact system 209 to implement opening and closing.
The contact system 209 is provided with a lever 211 parallel to said second shaft 210, the lever 211 being adapted to cooperate with a traction member in the earth leakage protection module 3 on the one hand and to couple with a lever in another circuit breaker on the other hand, so as to realize the linkage of the two circuit breakers. An embodiment of the contact system 209 is shown in fig. 15, wherein 219 is the mounting hole of the second shaft 210 and 220, 221 are pin holes that mate with the two linkage bars 208.
A first current transformer 213 is arranged in one of the first circuit breakers 2, the first current transformer 213 is connected with a circuit board in the reclosing module 1, and the current passing through the circuit breaker is sampled, so that current monitoring and electric quantity statistics are realized.
A through hole is formed in the side part of the first shell corresponding to the first current transformer 213, and a sampling line of the first current transformer 213 is connected with a circuit board in the reclosing module through the through hole. The through hole enables the wiring from the current transformer to the reclosing module to be more convenient.
Referring to fig. 16 and 17, an embodiment of the leakage protection module includes: second housing 301, zero sequence current transformer 302, retractor 306, leakage release 311, and first circuit board 313. The central area of one side portion of the second housing 301 is provided with an arc hole 304, the edge area is provided with two electrode holes 314, a pin shaft 305 is disposed in one side of the arc hole 304 in the second housing 301, and a limiting portion 303 and a first accommodating cavity 312 are disposed on the other side of the arc hole 304 opposite to the two sides of the pin shaft 305. The first circuit board 313 is mounted inside the second housing 301. The zero sequence current transformer 302 is mounted inside the second housing 301 near the two electrode holes 314 and is electrically connected to the first circuit board. The traction member 306 is mounted on the pin shaft 305, one end of the traction member passes through the space between the limiting portion 303 and the first accommodating cavity 312, the traction member intersects the arc-shaped hole 304, and a traction member return spring (not shown) is disposed between the traction member and the second housing. The leakage release 311 is clamped in the first accommodating cavity 312 and is electrically connected with the first circuit board, and the output rod 307 of the leakage release contacts with the traction member 306.
The zero sequence current transformer 302 samples the current in the auxiliary electrode 215 (see fig. 8) extending from the two electrode holes 14, the sampled data is input into the first circuit board 313, when the current leaks, the leakage release 311 generates a magnetic field to push the output rod 307 out to the left in fig. 17, the traction piece 306 is pushed to rotate clockwise around the pin shaft 305, the rotation of the traction piece 306 drives the deflector rod 211 (see fig. 14) on the contact system of the circuit breaker to rotate along the arc-shaped hole 304, the contact system of the circuit breaker is unlocked, the circuit breaker is switched to a switching-off state, and at the moment, the traction piece 306 is blocked by the limiting part 303 and does not rotate continuously. After the leakage current disappears, the magnetic field generated by the leakage release 311 disappears, the output rod 307 is retracted, and under the action of the traction piece reset spring, the traction piece 306 rotates anticlockwise around the pin shaft 305 to restore to the original position, so that the circuit breaker can be switched on.
Referring to fig. 17, the leakage protection module 3 further includes a leakage protection testing mechanism, which includes two metal plates 308 and 310 disposed in the second housing 301 and spaced apart from each other in space, and a testing button 309 disposed on the second housing 301 for pushing the two metal plates to contact, where the two metal plates are electrically connected to the leakage release 311. During testing, the test button is pressed to conduct the two metal sheets, the leakage release generates a simulated leakage magnetic field, the output rod 307 is ejected to the left in fig. 17, and the above-mentioned movement of the output rod pushes the circuit breaker to enter a breaking state. A compression spring (not shown) is arranged below the test button 309, and after the test button is released, the elastic force of the compression spring enables the test button to reset upwards, and the two metal sheets are restored to the disconnected state.
One implementation of the traction element 306 is shown in fig. 18. Referring to fig. 18, the traction member includes a base plate 317 and a shaft seat 315 formed on the base plate 317, one edge of the base plate 317 extends outwards and downwards to form a limit engaging portion 319 and an output lever engaging portion 320, an upper end of the output lever engaging portion 320 extends towards the shaft seat 315 to form an arc-shaped lever engaging portion 318 engaged with a lever 211 (see fig. 14) on the circuit breaker, and a lug 316 for connecting a spring is formed on the base plate 317. The traction piece adopts a plate-shaped limit matching part, an output rod matching part and an arc-shaped deflector rod matching part 318, so that the traction piece is more reliable in matching with the output rod 307, the limit part 303 and the deflector rod 211 of the leakage release 311, and the reliability of leakage protection can be further improved.
As shown in fig. 19 and 20, the separation switch includes: and a second circuit breaker 5 and a second reclosing module 6, wherein a separate switch decorative cover 7 is arranged at the upper ends of the second circuit breaker 5 and the second reclosing module 6, and a first communication interface 100 is respectively arranged at the left side and the right side of the separate switch, wherein 100' is a communication board. The second reclosing module 6 is disposed at one side of the second circuit breaker 5, electrically connected with a current transformer in the second circuit breaker 5, and coupled with a rotating shaft of a handle of the second circuit breaker 5 through a coupling shaft 107, and is used for detecting current in a circuit and controlling opening or closing of the second circuit breaker 5. The second circuit breaker 5 and the second reclosing module 6 each have an independent housing, constituting a modular disconnecting switch; the N-pole incoming line terminal 200 (see fig. 1), the N-pole outgoing line terminal 200' (see fig. 1) and the conductor 400 (see fig. 1) are disposed in a housing where the second reclosing module 6 is located. When a certain module fails, the modularized separating switch is adopted, the failed module can be directly replaced, and the maintenance is very convenient.
The construction of the second circuit breaker is the same as that of the first circuit breaker described above, and will not be repeated here.
The second reclosing module is substantially identical in construction to the first reclosing module. Fig. 21 shows an internal structure of the second reclosing module. Referring to fig. 21, the second reclosing module 6 is formed by adding an N-pole incoming terminal 200 and an N-pole outgoing terminal 200' to the housing and adding a conductor 400 to the housing based on the first reclosing module. And a wire groove 123 is formed in the housing between the partition plate 122 and the bottom wall of the housing, and a conductor (conductive sheet) 400 is disposed in the wire groove, and both ends thereof extend to the N-pole inlet terminal 200 and the N-pole outlet terminal 200'. Other structures of the second reclosing module are the same as those of the first reclosing module, and are not repeated here. Through the division board, can reduce the interference to and the electric shock when preventing the maintenance.
Referring to fig. 1 and 2, the wiring method of the intelligent distribution box is as follows:
plugging the first communication interface 100 to connect the power module, the main switch, the sub-switch and the communication module in a communication manner;
connecting the second communication interface 500 to a gateway device through a network cable;
the L-pole incoming line terminal 300 and the N-pole incoming line terminal 200 of each sub-switch are correspondingly connected with the L-pole outgoing line terminal and the N-pole outgoing line terminal of the main switch by wires, and the L-pole outgoing line terminal 300 'and the N-pole outgoing line terminal 200' of each sub-switch are correspondingly connected with corresponding lines. It can be seen that the wiring is simple, the circuit is very clear, and the overhaul is convenient.
In some embodiments, the first communication interface of one side portion adopts a multi-pin female connection seat, and the first communication interface of the other side portion adopts a multi-pin male connection seat, and the multi-pin female connection seat and the multi-pin male connection seat are directly spliced. In still other embodiments, the first communication interfaces of the two side portions are both the multi-pin female connection seats or the multi-pin male connection seats, and the two connection is achieved through an intermediate piece during connection, such as an intermediate piece shown in fig. 22, for connecting the two multi-pin female connection seats.
The foregoing detailed description of the invention has been provided by way of example only to assist those skilled in the art in understanding the invention and is not to be construed as limiting the scope of the invention. Various modifications, equivalent changes, etc. which are made by those skilled in the art to the above-described embodiments under the inventive concept should be included in the scope of the present invention.

Claims (9)

1. An intelligent distribution box, characterized by comprising:
a power module which is internally provided with a lightning protection circuit and the side part of which is provided with a first communication interface (100);
the side part of the main switch is provided with a first communication interface;
at least one disconnecting switch, wherein the side part of the disconnecting switch is provided with a first communication interface, one end part is provided with an L pole wire inlet terminal (300) and an N pole wire inlet terminal (200), the other end part is provided with an L pole wire outlet terminal (300 ') and an N pole wire outlet terminal (200'), and a conductor (400) which is communicated with the N pole wire outlet terminal and the N pole wire inlet terminal is arranged inside the disconnecting switch; and
a communication module having a first communication interface and a second communication interface (500);
the power module, the main switch, the sub-switch and the communication module are combined side by side and are connected in a plugging manner through the first communication interface to realize communication connection, and the second communication interface is used for connecting a network;
the master switch includes:
two first circuit breakers arranged side by side;
the leakage protection module is arranged at one side of the two first circuit breakers, is electrically connected with the outgoing line terminals of the first circuit breakers, is matched with the contact system of the first circuit breakers through a deflector rod, and is used for detecting leakage current of a circuit and driving the first circuit breakers to enter a brake-separating state when the leakage current exists; and
the first reclosing module is arranged on the other side of the two first circuit breakers, is electrically connected with a current transformer in the first circuit breakers, is connected with a rotating shaft of a handle of the first circuit breakers through a linkage shaft, and is used for detecting current in a circuit and controlling the first circuit breakers to be opened or closed;
the first circuit breaker, the leakage protection module and the first reclosing module are respectively provided with independent shells to form a modularized main switch;
the disconnecting switch includes:
a second circuit breaker; and
the second reclosing module is arranged on one side of the second circuit breaker, is electrically connected with a current transformer in the second circuit breaker, is connected with a rotating shaft of a handle of the second circuit breaker through a linkage shaft, and is used for detecting current in a circuit and controlling the second circuit breaker to be opened or closed;
the second circuit breaker and the second reclosing module are respectively provided with independent shells to form a modularized separating switch; the N pole incoming line terminal, the N pole outgoing line terminal and the conductor are arranged on a shell where the second reclosing module is located.
2. The intelligent distribution box according to claim 1, wherein each incoming line terminal and each outgoing line terminal comprise a locking screw rod, the locking screw rod is composed of a screw rod head and a screw rod seat, the screw rod head is made of metal, and the screw rod seat is made of insulating material.
3. The intelligent distribution box of claim 1, wherein the lightning protection circuit comprises: the voltage-limiting resistor comprises a first voltage-dependent resistor, a second voltage-dependent resistor, a third voltage-dependent resistor, a transient suppression diode, a first fuse and a second fuse, wherein one end of the transient suppression diode is connected with a ground wire connecting terminal, the other end of the transient suppression diode is respectively connected with one end of the first voltage-dependent resistor and one end of the second voltage-dependent resistor, the other end of the first voltage-dependent resistor is connected with the first fuse to the L pole, the other end of the second voltage-dependent resistor is connected with the second fuse to the N pole, and the third voltage-dependent resistor is connected between the other end of the first voltage-dependent resistor and the other end of the second voltage-dependent resistor.
4. The intelligent distribution box according to claim 1, wherein the leakage protection module comprises a second shell (301), a zero sequence current transformer (302), a traction piece (306), a leakage release (311) and a first circuit board (313),
an arc hole (304) is formed in the central area of one side part of the second shell, two electrode holes (314) are formed in the edge area of the second shell, a pin shaft (305) is arranged in one side of the arc hole in the second shell, and a limiting part (303) and a first accommodating cavity (312) are oppositely arranged on the other side of the arc hole on two sides of the pin shaft;
the first circuit board is arranged in the second shell;
the zero sequence current transformer is arranged inside the second shell close to the two electrode holes and is electrically connected with the first circuit board;
the traction piece is arranged on the pin shaft, one end of the traction piece passes through the space between the limiting part and the first accommodating cavity, the traction piece is intersected with the arc-shaped hole, and a traction piece reset spring is arranged between the traction piece and the second shell;
the electric leakage release is clamped in the first accommodating cavity and is electrically connected with the first circuit board, and an output rod of the electric leakage release is contacted with the traction piece.
5. The intelligent distribution box according to claim 4, wherein the traction member (306) comprises a base plate (317) and an axle seat (315) formed on the base plate, one edge of the base plate extends outwards and downwards to form a limit fitting portion (319) and an output rod fitting portion (320), the upper end of the output rod fitting portion (320) extends towards the axle seat and is formed with an arc-shaped deflector rod fitting portion (318) which is matched with the deflector rod (211), and lugs (316) for connecting springs are formed on the base plate.
6. The intelligent distribution box according to claim 1, wherein the first reclosing module and the second reclosing module each comprise a third housing (101), a linkage gear (102), a motor (106), a gear set (104) and a second circuit board (108),
a second accommodating cavity (106') and a plurality of circuit board mounting columns (103) are arranged on one inner wall of the third shell, and a motor pressing part (117) and a circuit board pressing column (118) are arranged on the other opposite inner wall;
the linkage gear is arranged in the third shell and is spatially opposite to the rotation center of the breaker operating handle, and a magnetic core and a linkage shaft (107) are arranged on the linkage gear;
the motor is clamped in the second accommodating cavity, is pressed by the motor pressing part and is fixed in the third shell, and a worm (105) is arranged on an output shaft of the motor;
the gear set is arranged in the third shell and is respectively meshed with the worm and the linkage gear;
the second circuit board is fixed in the third shell through the circuit board mounting column and the circuit board pressing column and is electrically connected with the motor, and a Hall switch (115) is arranged on the second circuit board and used for detecting the rotating position of the linkage gear in a matching way with the magnetic core.
7. The intelligent distribution box according to claim 6, wherein a first notch (113) through which the motor (106) passes, a second notch (114) through which the gear set (104) passes, and a third notch (116) through which the linkage shaft passes are provided on the second circuit board (108), and the motor, the gear set, and the linkage shaft pass through the second circuit board through the first notch, the second notch, and the third notch, respectively.
8. The intelligent distribution box according to claim 6, wherein the circuit board mounting column (103) comprises a first column (1031) and a positioning pin (1032) formed at the front end of the first column, a pin hole matched with the positioning pin is formed at the front end of the circuit board pressing column (118), a positioning hole is formed in the circuit board, and the circuit board is positioned in a matched manner through the positioning hole and the positioning pin and clamped and fixed through the circuit board mounting column and the circuit board pressing column.
9. A wiring method of an intelligent distribution box, characterized in that the intelligent distribution box is the intelligent distribution box according to any one of claims 1 to 8, the wiring method comprising:
the first communication interface is spliced to enable the power module, the main switch, the sub-switch and the communication module to be in communication connection;
connecting the second communication interface to gateway equipment through a network cable;
the L pole incoming line terminal and the N pole incoming line terminal of each sub-switch are correspondingly connected with the L pole outgoing line terminal and the N pole outgoing line terminal of the main switch through wires, and the L pole outgoing line terminal and the N pole outgoing line terminal of each sub-switch are connected with corresponding circuits.
CN201811419253.7A 2018-11-26 2018-11-26 Intelligent distribution box and wiring method thereof Active CN109378715B (en)

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CN111404049B (en) * 2020-04-27 2023-10-20 乐清市一锦电子有限公司 Distribution box system and wiring method thereof
CN111863544B (en) * 2020-08-01 2022-07-19 苏州阿德文斯电子科技有限公司 Wiring device of NB-IOT (network B-IOT) internet of things circuit breaker

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