CN112768318B

CN112768318B - Intelligent electromechanical hybrid breaker opening locking device

Info

Publication number: CN112768318B
Application number: CN202110028854.0A
Authority: CN
Inventors: 张进; 袁高普; 施长云
Original assignee: Jiaxing Jingsi Intelligent Technology Co ltd
Current assignee: Jiaxing Jingsi Intelligent Technology Co ltd
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2023-06-06
Anticipated expiration: 2041-01-11
Also published as: CN112768318A

Abstract

The embodiment of the invention discloses an intelligent electromechanical hybrid breaker opening locking device, which comprises a mechanical switch and an electronic solid-state switching device which are connected in series and can be controlled by an MCU (micro control Unit), wherein the opening locking device comprises an opening locking piece rotatably arranged on a shell of the breaker, and the opening locking piece is in a lifting state when the breaker is not installed in a power distribution cabinet, so that a handle of a mechanical switch closing operating mechanism is prevented from running towards a closing direction to realize opening locking. The breaker provided by the embodiment of the invention can prevent false switching-on and improve the safety of products.

Description

Intelligent electromechanical hybrid breaker opening locking device

Technical Field

The embodiment of the invention relates to the technical field of circuit breakers, in particular to an intelligent electromechanical hybrid circuit breaker opening locking device.

Background

The circuit breaker is a switching device capable of switching on, carrying and off a current under normal loop conditions and switching on, carrying and off a current under abnormal loop conditions within a prescribed time, and can distribute electric energy and protect a power supply line, a motor and the like, and automatically cut off the circuit when serious overload or short circuit, undervoltage and other faults occur, so that the circuit breaker is widely applied to power electronic systems. The common breaker is of a purely mechanical structure and has the problem of arc. The mechanical and electronic hybrid switch is adopted, and the structure is complex, so that the switch is only suitable for a large-sized alternating current breaker and is inconvenient to control. The products can be switched on when not installed in a cabinet, so that false switching on is easy to cause, and the products are unsafe. In view of this, there is a need for improvements to the drawbacks of existing circuit breaker products to meet market needs.

Disclosure of Invention

The invention aims to provide an intelligent electromechanical hybrid breaker opening locking device, which solves the problems in the prior art and further optimizes other performances of products on the basis.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

the utility model provides an intelligent electromechanical hybrid circuit breaker separating brake locking device, the circuit breaker includes concatenates and can be controlled by MCU's mechanical switch and electron solid-state switching device, and separating brake locking device includes the separating brake locking piece that rotatably installs in the circuit breaker shell, and separating brake locking piece is in the lift state when the circuit breaker is not loaded into the switch board to prevent mechanical switch closing operation mechanism's handle to the direction operation of closing a floodgate and realize separating brake locking.

Compared with the prior art, when the circuit breaker is not installed in the machine frame, the handle can not be closed due to the fact that the protrusion of the locking device part limits the handle, after the circuit breaker is installed in the machine frame, the locking part is separated from the handle, so that a product can be opened and unlocked, and therefore error closing can be prevented, and product safety is improved.

Drawings

FIG. 1 is a schematic diagram of a circuit breaker system architecture in accordance with an embodiment of the present invention;

FIG. 2 is a diagram of a circuit breaker electronics system in accordance with an embodiment of the present invention;

fig. 3a is a schematic diagram of a circuit breaker front view direction mechanism according to an embodiment of the present invention;

Fig. 3b is a schematic diagram of a circuit breaker rear view direction mechanism according to an embodiment of the present invention;

FIG. 3c is a schematic diagram of a side view of a circuit breaker mechanism according to an embodiment of the present invention;

FIG. 4 is an exploded view of a circuit breaker according to an embodiment of the present invention;

fig. 5a is a schematic view of a circuit breaker housing mask in accordance with an embodiment of the present invention;

fig. 5b is a schematic diagram of a circuit breaker housing mask according to an embodiment of the invention;

fig. 6 is a partial schematic view of a circuit breaker housing base in accordance with an embodiment of the invention;

fig. 7 is a partial schematic view of a circuit breaker housing upper cover in accordance with an embodiment of the present invention;

fig. 8 is an assembly diagram of a circuit breaker closing operation mechanism and a moving contact and a mask according to an embodiment of the present invention;

fig. 9 is an assembly view of a breaker handle and a moving contact and contact pressure spring according to an embodiment of the invention;

fig. 10a is a schematic view of a circuit breaker handle according to an embodiment of the invention;

fig. 10b is a schematic diagram of a breaker handle according to an embodiment of the invention;

fig. 11 is a schematic diagram of a moving contact of a circuit breaker according to an embodiment of the present invention;

fig. 12 is a schematic view of a circuit breaker operating button according to an embodiment of the present invention;

fig. 13 is a schematic view illustrating a partial schematic view of a closing process of a circuit breaker according to an embodiment of the present invention;

fig. 14 is a state diagram of a circuit breaker closing-related mechanism according to an embodiment of the present invention;

fig. 15 is a cross-sectional view of a mechanism for closing a circuit breaker according to an embodiment of the present invention;

Fig. 16 is a state diagram of a mechanism of the circuit breaker according to the embodiment of the invention when the circuit breaker is opened;

fig. 17 is an assembly view of a related mechanism of a trip protection device of a circuit breaker according to an embodiment of the present invention;

FIG. 18 is an assembly view of a circuit breaker emergency stop device related mechanism and a face shield according to an embodiment of the present invention;

FIG. 19 is a schematic view of a breaker emergency stop button according to an embodiment of the present invention;

fig. 20 is an assembly view of a mechanism and a mask associated with an initial state of a circuit breaker opening locking apparatus according to an embodiment of the present invention;

fig. 21 is a schematic view of a breaking lock of an embodiment of the circuit breaker of the present invention;

fig. 22 is a state diagram of a mechanism of the circuit breaker according to the embodiment of the invention when the opening locking device is locked;

fig. 23 is a diagram showing a state of a circuit breaker when the opening locking device is unlocked;

fig. 24 is a state diagram of a mechanism associated with a fixed unlocking device when the circuit breaker is installed in a cabinet according to an embodiment of the present invention;

fig. 25 is a state diagram of a mechanism related to a fixing and unlocking device when a circuit breaker is pulled out of a cabinet according to an embodiment of the invention;

fig. 26 is a schematic view of a circuit breaker cabinet lock in accordance with an embodiment of the invention;

FIG. 27 is a schematic diagram of a circuit breaker wiring communication module in accordance with an embodiment of the present invention;

fig. 28 is a schematic view of a circuit breaker incoming line termination structure according to an embodiment of the present invention;

fig. 29 is a schematic view of a circuit breaker wiring spring according to an embodiment of the invention;

Fig. 30 is a schematic diagram of a circuit breaker outlet termination structure according to an embodiment of the present invention;

fig. 31 is an assembly diagram of a related mechanism of a circuit breaker detection indication system according to an embodiment of the present invention;

fig. 32 is an assembly view of a circuit breaker heat sink in accordance with an embodiment of the present invention;

fig. 33 is a partial assembly view of a circuit breaker radiator according to an embodiment of the present invention.

Detailed Description

Embodiments of the present invention are described in further detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly generalized by those skilled in the art without departing from the spirit of the invention and, therefore, the invention is not limited to the specific embodiments disclosed below.

Fig. 1-33 respectively show the main system, device, mechanism, module and component structure and assembly relation of the circuit breaker according to the embodiment of the invention, and the detailed description is as follows.

As shown in fig. 1, the hybrid circuit breaker system architecture of the embodiment of the invention includes a mechanical system S100, an electronic system S200 and a wiring system S300, wherein the mechanical system S100 has a mechanical switch, the electronic system S200 includes a power portion configured with an electronic solid state switching device and a control portion configured with an MCU, the electronic solid state switching device is connected in series with the mechanical switch of the mechanical system, and the MCU can output an electronic solid state switching device control signal to control the electronic solid state switching device to operate.

The circuit breaker is configured with the MCU to monitor the circuit breaker, so that the self-checking of the electronic solid-state switch device, the self-checking of the mechanical switch and the self-checking of the emergency switch are integrated by optimizing time sequence control/logic control, and a full-function self-checking mechanism is realized. Meanwhile, fault points can be uploaded in real time, state machine control is adopted to clearly monitor the state change of the whole breaker, on-line/off-line configuration parameters are conveniently expanded and supported, the adjustment of overload, overcurrent, overvoltage, overtemperature protection curves and the like is realized, and the functions of electric quantity measurement/metering, automatic communication networking and the like are realized. Thus, the embodiment of the invention is an intelligent circuit breaker.

The whole machine, the subsystem, the mechanism, the device and the parts of the preferred embodiment of the invention are respectively described in detail below, and can form independent technical schemes for use, and it is understood that one or a plurality of schemes can be selected for combined use according to application scenes when the product is specifically manufactured.

1. Electronic system

The common breaker is a purely mechanical switch, and has the arcing problem; there are also few mechanical and electronic hybrid switches, but the structure is relatively complex and can only be applied to large-sized alternating current circuit breakers.

The embodiment of the invention is improved in this way, the overall structure of the invention adopts a combination type of a mechanical switch and an electronic solid-state switch device, wherein the electronic system is provided with the electronic solid-state switch device which is connected in series with a mechanical break point and is provided with an MCU for control, thus the mechanical and electronic dual fault protection can be realized, the structure is simpler, and the invention is applicable to an AC/DC miniature circuit breaker.

As shown in fig. 2, the circuit breaker electronic system architecture is designed as follows: consists of a power section (power stage) and a control section (control stage), as described in detail below.

1. Power section design

(1) And the mechanical switch Ki is provided with an auxiliary contact and feeds back the on-off state in real time. Preferably, the mechanical switch Ki is provided with a mechanical emergency stop button device Ke with a displacement sensor, which can detect the state in real time.

(2) The electronic solid-state switch device (SSK) is composed of electronic devices such as a MOSFET (metal oxide semiconductor field effect transistor) or an IGBT (insulated gate bipolar transistor) and the like, is connected in series with a mechanical switch, is matched with the mechanical switch for use, has fast response, and is beneficial to avoiding arc generation.

(3) The electromagnetic trip Trig and the driving circuit FET_trig thereof are configured on the mechanical switch, and the movable iron core of the electromagnetic trip mechanism is connected with the closing lock catch of the closing locking mechanism, so that the MCU outputs an electromagnetic trip control signal to directly switch off the mechanical switch when in fault.

Preferably, a sampling resistor Rs (current i_s) is arranged between the mechanical switch Ki and the electronic solid-state switching device SSK to feed back the current in real time. In addition, a current limiting inductor Ldi is arranged between the mechanical switch Ki and the electronic solid state switching device SSK, and a resistor (current is i_in) is connected in parallel to limit the current ramp rate (Ldi/dt), so that the circuit can be rapidly disconnected (such as within 10 mu s) under the condition of short circuit by utilizing the rapid disconnection capability and the rapid detection circuit, and the circuit current is controlled/limited.

Further, the power part is provided with temperature-sensitive sensors Rt1, rt2, rt3 and the like, and the temperature-sensitive sensors are distributed at terminal positions PA and PB of the circuit breaker and at hot spot positions inside the circuit breaker and used for monitoring the temperature in real time. Temperature detection and monitoring are adopted for the wiring ends at two ends of the circuit breaker, and data are collected timely and uploaded to the client, so that the client can timely control the operation of products and systems, know risks in advance and timely remove faults.

2. Control part design

(1) MCU, which is built with I/O port, D/A converter ADC and synchronous/asynchronous transmitter USART, as the core component of control part, can output the control signal of electronic solid state switch device to control the action of electronic solid state switch device. The ADC is connected with analog signals such as voltage signals (Vin), current feedback signals (I_n, I_s) and temperature signals (T_t1, T_t2, T_t3) which correspond to temperature-sensitive sensors Rt1, rt2, rt3 and the like respectively and are converted into digital signals. The MCU incorporates a USART to constitute the communication unit COM, thereby realizing digital communication. In addition, MCU connects the EEPROM of the memory, in order to control the data bidirectionally, record/call the data, make the circuit breaker have technical data storage/memory/analysis function, its historical data store in EEPROM, some characteristic quantity can compare the historical data, facilitate realizing early warning and active protection; in addition, MCU still connects the LED lamp for control LED lamp indicates circuit breaker complete machine state.

(2) The hardware protection circuit (hardware protection) is triggered by combining the current ramp rate Ldi/dt with the actual load current, and when the current ramp rate Ldi/dt and the actual load current are higher than a threshold value, the hardware protection circuit is triggered, the solid switch gate control signal is directly blocked (set low), the whole response time can be completed within tens of ns, and the electronic solid switch device can be controlled to quickly enter a soft-off state under the condition of output short circuit so as to limit the overvoltage of the circuit.

Preferably, the embodiment of the invention acquires a detection signal of the running state of the circuit breaker, wherein the signal input and output modes are as follows: analog signals such as voltage, current, temperature and the like are sent to the MCU and the hardware protection circuit, other sensor signals (such as contact position signals, emergency stop position signals and the like) are fed back to the MCU to participate in logic control, an electromagnetic trip control signal (DRV_trig) is controlled by the MCU, and an electronic solid-state switching device control signal (DRV_ ssk) is controlled by a logic combination (DRV-logic) of an output signal of the hardware protection circuit and an output signal of the MCU to realize double protection. Preferably, the invention also regularly monitors the control signal and the detection signal of the circuit breaker and refreshes the running state of the circuit breaker, and locally stores corresponding data or uploads corresponding data, thus facilitating the user to control the running state of the product and the system, and further acquiring the risk in advance and timely removing the fault.

2. Mechanical system

1. Overall structure

Aiming at the problems of arcing and the like of the existing products, the embodiment of the invention adopts a mode of combining mechanical contact and electronic solid-state switching device control, and sets a mechanical breakpoint and an auxiliary electromagnetic tripping mechanism of which the electronic solid-state switching devices are connected in series, thereby avoiding the generation of the arc, ensuring a safe and visible mechanical breakpoint and improving the response speed and breaking capacity.

The circuit breaker product is provided with a mechanical system and an electronic system, wherein the electronic system is provided with an electronic solid-state switching device controlled by an MCU, the mechanical system is provided with a mechanical switch and an electromagnetic tripping mechanism, the mechanical switch is connected with the electronic solid-state switching device in series, the electronic solid-state switching device is used for realizing soft turn-off of the power utilization system, and the electromagnetic tripping mechanism is used for realizing hard turn-off of the power utilization system by driving the mechanical switch to break.

As shown in fig. 3a to 3C, the circuit breaker is specifically configured in a mechanical structure with a housing a, an outgoing line end module B, an incoming line end module C, an operation button mechanism D, a closing operation mechanism E, an emergency stop button mechanism F, a switching-off locking device G, a fixed unlocking device H, a closing locking mechanism I, a contact system J, an electronic module K, a communication module L, an electromagnetic trip mechanism M, a status indication module N, a quick connection module P, an emergency stop breaking module Q, a heat dissipation module R, a contact detection module S, and other devices, mechanisms, modules or parts.

As shown in FIG. 4, the apparatus and mechanism of the present invention generally comprises a plurality of components, as described in detail below.

The shell A consists of a mask A01, a base A02 and an upper cover A03, and a plurality of holes, grooves or positioning plates (blocks) and the like are arranged on the shell A so as to provide a mounting foundation for other parts.

And the wire outlet end module B is provided with a wiring board B01 and a wiring board B02 which have the same structure, and an external wire can be connected with the wiring boards.

The wire inlet end module C is provided with two wire inlet modules with the same structure, namely a negative wire inlet module C01 and a positive wire inlet module C02, wherein binding clips are respectively arranged to clamp the connected electrodes or wires.

The operating button mechanism D comprises an operating button D01 and a button pressure spring D02, is linked with the closing operating mechanism E and is used for controlling the closing operating mechanism E.

The switching-on operating mechanism E comprises a handle E01 and a handle pressure spring E02, a moving contact and a contact pressure spring of the mechanical switch are arranged on the handle E, and a switching-on lock catch can be connected in a combined or separated mode and is used for controlling the mechanical switch to switch on or off.

The emergency stop button mechanism F comprises an emergency stop button F01 and an emergency stop pressure spring F02, and is matched with the operation button mechanism D, the closing operation mechanism E, the closing locking mechanism I and the like and used for carrying out emergency brake separation in an emergency or maintenance state.

The opening locking device G comprises an opening locking piece G01 and a rotating shaft G02 torsion spring G03, and is matched with the functions of an operation button mechanism D, a closing operation mechanism E, a closing locking mechanism I and the like, and the closing operation mechanism E is locked when opening the switch to prevent closing before the circuit breaker is installed in a cabinet of a power distribution cabinet.

The fixed unlocking device H comprises a cabinet locking piece H01 and a rotating shaft G02 torsion spring G03, and is matched with the action of an operation button mechanism D and a closing operation mechanism E, when the circuit breaker is installed in a cabinet of the power distribution cabinet, the circuit breaker is locked with the cabinet of the power distribution cabinet, and abnormal pulling-out of the circuit breaker during closing power on is prevented; the circuit breaker can be pulled out when unlocking.

The closing locking mechanism I comprises a closing lock catch I01, a lock catch shaft I02 and the like and is used for locking the closing operation mechanism E during closing, so that the mechanical switch is kept in a closed state.

The contact system J comprises a moving contact J01, a fixed contact J02 and a contact pressure spring J03, wherein a mechanical switch is switched on when the moving contact J01 and the fixed contact J02 are in contact, and the contact pressure spring J03 provides necessary contact pressure when the mechanical switch is switched on; otherwise, the switch is turned off.

The electronic module K is configured with elements such as the electronic solid-state switching device SSK and the MCU, and is specifically described above.

The communication module L is arranged at the incoming line end of the circuit breaker and comprises a module base L01, wherein two flexible jointing clamps L02 and L03 are arranged for communication wiring.

The electromagnetic tripping mechanism M comprises a movable iron core, an electromagnetic coil, a magnetic spring and the like, and is used for controlling the switching-on locking mechanism I to be separated from the switching-on operating mechanism E to switch off the mechanical switch when a fault occurs.

The state indicating module N comprises an LED lamp N02 and is installed on the contact detection circuit board N01 together with the contact position detection micro switch S01 and is used for indicating the working state of an electronic solid-state switching device on the electronic module, and convenience is provided for maintenance and overhaul.

The quick-connection module P comprises a wiring spring piece P01 and a wiring spring piece P02 which have the same structure and are used for quickly inserting external wires and being in close contact with corresponding wiring boards.

The scram breaking module Q comprises a scram micro switch Q02 which is arranged on a PCB (printed circuit board) Q01, and triggers a signal to a system to control the electronic solid-state switching device to be turned off when scram occurs.

And the heat dissipation module R is used for providing heat dissipation measures for the circuit breaker.

The contact detection module S comprises a contact position detection micro switch S01 which is arranged on a contact detection circuit board N01 together with an LED lamp N02 and is used for detecting the contact position and displaying the on-off state of the mechanical switch and the working state of the electronic solid-state device through the LED lamp N02.

The circuit breaker obtains a hybrid circuit breaker product with electromechanical combination through optimizing the design schemes of the mechanical part and the electronic part, and has outstanding performance, particularly including but not limited to the following aspects.

(1) An electronic solid state switching device and mechanical switching hybrid product is used. The electronic module K uses electronic solid-state switching devices (MOSFETs/IGBTs) which are arranged in the electronic module K to be used in series with the mechanical breaking points of the mechanical switches, so that the branch circuits of each circuit breaker provided by the invention in the power distribution cabinet can be controlled in a branching way. Compared with the traditional circuit breaker, the inherent overload thermal double-gold mechanism and the short-circuit electromagnetic snap-action structure are removed and replaced by the electronic module K, so that the response time is reduced from millisecond level to microsecond level, and the electronic solid-state switching device can rapidly respond to turn-off and realize arc-free breaking because the response time is far faster than that of a mechanical part. And after the electronic solid-state switching device is turned off, the mechanical contact system J is not required to be disconnected, and the electronic solid-state switching device can be remotely turned on without manual reset after the fault occurs and the fault is removed.

(2) The MCU is configured for control. After the MCU is arranged and the parts such as the memory, the communication module and the like are configured, the control is more flexible and convenient, and the control mode of the electronic device can be optimized. The MCU is configured with a hardware protection circuit, so that positive and negative connections (representing overload and the like) of a load and a power supply end can be absolutely protected, and once the positive and negative connections are identified, a signal is sent to start the electromagnetic tripping mechanism M, so that a mechanical breakpoint is disconnected, and further damage to equipment and the load is avoided.

(3) And setting a tripping protection device. On the one hand, a mechanical breakpoint and an auxiliary electromagnetic tripping mechanism M are arranged in series with the electronic solid-state switching device, and a safe visible mechanical breakpoint is ensured by disconnecting the closing operating mechanism E in case of failure. On the other hand, the emergency stop device is further arranged, the safety and reliability of disconnection of mechanical breakpoints can be guaranteed due to the existence of the pure machinery of the emergency stop device, and the electronic solid-state device is disconnected in advance by triggering another micro switch in the process of pressing the emergency stop button, so that the electrified disconnection of the mechanical breakpoints is avoided, and the generation of electric arcs is avoided. In this way, the presence of the mechanical break and its attendant mechanisms can provide a double protection, thereby preventing a single point of failure.

(4) A brake-separating locking device is arranged. The breaker is prevented from being switched on in advance when not inserted into a cabinet of a power distribution cabinet or not inserted in place, and the safety of the breaker and an electricity utilization system is ensured. When the breaker is in a switching-off state, a switching-off locking piece on the switching-off locking device G can block a locking lug of a switching-on operating mechanism handle so that the switching-on operating mechanism handle cannot be switched on. Only after the product is inserted in place, the opening locking device G is in a pressing state, the locking boss of the opening locking piece is not on the locking convex block path of the switching-on operating mechanism handle, and the circuit breaker can be switched on freely. After the switching-on operating mechanism E drives the moving contact system J to be in place, the switching-on locking mechanism I is buckled with the switching-on operating mechanism E, so that the mechanical break point is closed and is in a holding state.

(5) And setting a fixed unlocking device. Abnormal pulling-out of the breaker when the breaker is inserted into the cabinet of the power distribution cabinet is prevented, and accidents are avoided. When the product is in a closing state, the operating button mechanism D is flush with the front end surface of the shell A, and no force point can enable the product to be in a pulled-out state. Only when the product is in a brake-separating state, the operating button mechanism D can protrude out of the front end face of the shell A, and the linked operating button and the handle can be pulled out at the moment. When the breaker is switched on and inserted into the cabinet of the power distribution cabinet, the breaker and the cabinet can be unlocked only after the operating button is pressed and the operating button and the handle are pulled out. In the pulling-out process, the protruding block at the tail part of the pressing rod of the operating button mechanism D drives the cabinet locking piece of the fixed unlocking device H to rotate, so that the locking boss on the cabinet locking piece is pressed down, and the limit of the product and the cabinet body is released. And continuously pulling out the operation button mechanism D to enable the product to be pulled out of the power distribution cabinet. The product can be pulled out only in the state of opening the brake, and no tool is needed.

(6) The wiring is systematic and time-sharing. The product and the external communication interface are made into a modularized assembly inside the product, and the pluggable type communication interface is more beneficial to installation and maintenance. Meanwhile, the wiring and the communication module are connected in a time-sharing mode when the wiring and the communication module are connected into the system, the negative electrode is guaranteed to be contacted firstly, the communication is carried out secondly, and finally the positive electrode is contacted, so that the control circuit is guaranteed to be grounded reliably firstly, and impact influence generated when a product is plugged into or pulled out from the system is prevented.

(7) The position of the mechanical switch contact is detected through the micro switch arranged on the corresponding PCB, the movable contact triggers the micro switch at the corresponding position, so that signal acquisition of mechanical break-point switching-on and switching-off can be realized, the on-off state of the contact is indicated through the LED lamp, and the maintenance and the fault removal are convenient.

The following describes the circuit breaker closing device, trip protection device, emergency stop device, opening locking device, fixed unlocking device, wiring system, detection indication system, heat dissipation system, etc. respectively, wherein, part of the devices may relate to a plurality of mechanisms, modules or parts in fig. 4, and the mechanisms, modules or parts cooperate with each other to complete corresponding functions.

As shown in fig. 5 a-7, the cover a01, the base and the upper cover a03 of the circuit breaker case can be in a snap-fit structure, and are easy to assemble and disassemble. Base A02 mainly provides the installation basis for relevant mechanism and spare part, wherein: the upper part of the front part of the base is mainly provided with mechanical parts of the circuit breaker, and the lower part of the front part is provided with outgoing parts; the middle part of the base is provided with an electric control part and a heat dissipation part; and parts in the aspect of line feeding are arranged at the rear part of the base. The base A02 is provided with a plurality of positioning plates (blocks) and the like to hold positioning and limiting for related parts, such as: the handle and the handle spring are positioned and limited through the handle baffle A02d, the movable iron core and the lock catch are positioned through the tripping positioning plate A02c, and the emergency stop button and the emergency stop pressure spring are limited through the emergency stop block A02 a; etc. A cabinet locking piece penetrating opening is formed between the base top wall positioning block A02b and the upper cover top wall positioning block A03a, a separating brake unlocking piece penetrating opening is formed between the base top wall positioning block A02b and the surface cover top wall A01H, wherein the surface cover top wall A01H is provided with a rotating shaft seat A01G for installing a rotating shaft G02, and the rotating shaft G02 is shared by the separating brake locking piece G01 and the cabinet locking piece H01. For convenient operation, a handle via hole A01a, a scram button via hole A01b and an LED lamp via hole A01c are arranged on the front plate A01f of the mask. For the convenience of being qualified for the next round of competitions, face guard drain pan A01e sets up shell fragment installation cavity A01j and shell fragment fixing base A01k and assembles wiring shell fragment P01 and wiring shell fragment P02, and face guard drain pan A01e still sets up wiring board reference column A01d and carries out spacingly to wiring board B01 and wiring board B02 simultaneously. Therefore, the related mechanism and parts of the circuit breaker can be compactly arranged on the shell, and the circuit breaker has compact structure and small volume.

Incidentally, in describing the structure of the related device and the mounting structure, attention is directed to the mounting positions on fig. 5a to 7.

2. Closing device

Aiming at the problems that the existing product switching-on device has more pure mechanical structural parts and poor reliability, the embodiment of the invention optimizes the switching-on operation structure, the contact system structure and the layout mode, has compact structure and can realize reliable switching-on.

As shown in fig. 8 to 16, the mechanical switch contact system in the embodiment of the invention has a fixed contact J02, a moving contact J01 and a contact pressure spring J03, the fixed contact J02 is fixedly mounted on a breaker housing base a02, the moving contact J01 is mounted on a closing operation mechanism handle E01 in a linkage manner, the moving contact J01 is driven by the handle E01 to contact the fixed contact J02, and the moving contact J01 is locked in place by a closing locking mechanism.

Referring to fig. 4, the handle E01 in this embodiment is used to drive the moving contact J01 to contact the fixed contact J02 and can perform closing locking or opening disengagement through the closing locking mechanism. The handle body E01f in the middle of the handle E01 is arranged on the breaker shell, penetrates through the handle through hole A01a on the face mask A01, the handle E01 is provided with a handle pressure spring E02, one end of the handle pressure spring E02 abuts against the tail end shaft hole E01g of the handle E01, and the other end abuts against the handle baffle A02d on the base A02.

The bottom of the handle body E01f is provided with a first seat block and a second seat block, a moving contact J01 and a contact pressure spring J03 are installed, the middle J01a of the moving contact penetrates through a contact passing groove E01a on the first seat block at the bottom of the handle body E01f and is supported on a contact bearing platform E01b on the first seat block at the bottom of the handle body, the moving contact J01 is provided with a moving contact bump J01b limited by the end face of the contact passing groove, one end of the contact pressure spring J03 is abutted against a contact pressure spring blocking part E01c on the second seat block at the bottom of the handle body E01f, and the other end of the contact pressure spring is attached to a contact pressure spring positioning column J01c in a spring groove of a bending part at the head end of the moving contact J01. Under the pressure of the contact pressure spring J03, a moving contact lug J01b on the moving contact J01 and the end face of a contact passing groove E01a on the handle E01 are limited, and an initial state is maintained.

A handle buckling groove E01k is formed in a first seat block at the bottom of a handle body E01f of a handle E01 to be connected with a closing lock catch I01 of a closing locking mechanism I, wherein the handle buckling groove E01k is located below a contact passing groove E01a, a contact bearing platform E01b is formed between the handle buckling groove E01k and the contact passing groove E01a, the middle part of the closing lock catch I01 is rotatably and synchronously assembled on a circuit breaker shell base A02 through a lock catch shaft I02, one end of the closing lock catch I01 is provided with a movable iron core connecting part I01d to be connected with a movable iron core M01 of an electromagnetic tripping mechanism M, the other end of the closing lock catch I01 is provided with a closing lock catch buckling part I01b to enter and exit the handle buckling groove E01k to achieve combination/separation, and therefore a movable contact J01 and a fixed contact J02 can be reliably contacted during closing.

In particular, the handle E01 is provided with a linkage operation button mechanism D. The operating button mechanism D comprises an operating button D01 and a button pressure spring D02, wherein a pressing cap and a pressing rod D01a of the operating button D01 are integrally connected. The pressing rod D01a of the operating button D01 passes through the handle shaft cavity E01h, wherein the pressing cap is positioned outside the handle shaft cavity E01h, the pressing rod tail protruding block D01E corresponds to a head notch of the handle shaft cavity E01h, the pressing rod side protruding block D01b is arranged in a handle shaft cavity side groove, and the pressing rod side protruding block D01b is limited with the end face of the handle shaft cavity side groove. The button pressure spring D02 is arranged in the button pressure spring groove and partially exposed, one end of the button pressure spring D02 abuts against the pressure spring blocking surface D01c on the operating button D01, and the other end abuts against the pressure spring blocking surface E01D on the handle E01 to keep a limiting state, and at the moment, the inner side surface D01D of the pressing cap of the operating button D01 is limited with the end face E01E of the shaft cavity of the handle E01.

When the switch is closed, the finger pushes the operation button D01 to drive the handle E01, the movable contact J01 and the contact pressure spring J03 in the contact system J. The stroke of the handle E01 is larger than that of the moving contact J01, and a contact surface J01d on the moving contact J01 is firstly contacted with a contact surface J01a of the fixed contact J02, so that the stroke end is reached. The movable iron core connecting part I01d on the first end of the closing lock catch I01 is linked with the movable iron core M01 in the electromagnetic tripping mechanism M, the movable iron core M01 enables the buckling part I01b on the second end of the closing lock catch I01 to enter the handle buckling groove E01k under the elastic action of the magnetic spring M03, and the buckling rod I01a of the buckling part pulls the end face E01j of the handle buckling groove, so that closing locking is realized. When the brake is opened, the opposite action is executed.

The operation button D01 is pushed continuously, the handle E01 runs continuously until the handle E01 is limited by the handle baffle A02D on the base A02, at the moment, the switch-on lock catch I01 buckles the handle E01 to enable the switch-on operation mechanism D and the contact system J to be in a switch-on state, the handle pressure spring E02 is in a compression state, the contact pressure spring J03 continues to be compressed, and contact pressure is provided for the moving contact J01. At this time, under the action of the magnetic spring M03, the handle pressure spring E02 and the contact pressure spring J03, the whole system is in a closing balance state.

In the circuit breaker, the whole performance of the circuit breaker can be optimized by further combining the emergency stop device, the tripping protection device, the opening locking device and other split systems for better playing the performance of the switching-on device, and the whole performance of the circuit breaker is particularly described below.

3. Trip protection device

Aiming at the problems that when the circuit part of the existing product fails, the circuit part cannot be disconnected in time and the risk is high, the embodiment of the invention recognizes the failure, signals the electromagnetic tripping system to disconnect the mechanical breakpoint to disconnect the circuit, thereby ensuring the reliable disconnection of the power utilization system in the failure state and improving the reliability of the product.

As shown in fig. 17, referring to fig. 4 to 16, the trip protection device of the embodiment of the present invention includes an electromagnetic trip mechanism M configured on a mechanical switch, a movable iron core M01 of the electromagnetic trip mechanism is connected with a switch-on lock catch I01 of a switch-on locking mechanism of the mechanical switch, and an electromagnetic trip driving circuit makes an electromagnetic coil of the electromagnetic trip mechanism get/lose electricity according to an MCU control signal to make the movable iron core act, so as to drive the switch-on lock catch I01 to trip with a switch-on operating mechanism handle E01 of the mechanical switch. The switching-on lock catch I01 is rotatably arranged on the circuit breaker shell, specifically, a lock catch shaft sleeve I01c in the middle of the switching-on lock catch I01 is arranged on a lock catch shaft I02, wherein the lock catch shaft I02 is arranged on a shell base A02, and thus the switching-on lock catch I01 is rotatably and synchronously assembled on the circuit breaker shell; the movable iron core connecting part I01d at one end of the closing lock catch is connected with the movable iron core M01 of the electromagnetic tripping mechanism M, so that the movable iron core M01 of the electromagnetic tripping mechanism can be linked, the buckling part I01b at the other end is driven to be combined with or separated from the handle buckling groove E01k, the head of the buckling part I01b is provided with a buckling rod I01a which is wider than the buckling part I01b, the inner side surface of the buckling rod I01a props against the end face E01jk of the handle buckling groove during closing, and the buckling rod I01a is separated from the end face E01jk of the handle buckling groove during opening. In particular, the circuit breaker of the present embodiment is configured with a hardware protection circuit coupled to the MCU and the electromagnetic trip driving circuit so as to control the trip by the MCU.

When a line fails (such as overload or short circuit, etc.), the MCU in the electronic module K recognizes the failure, the electronic solid-state switching device in the electronic module K cannot bear and needs to be disconnected by a mechanical break point, the MCU in the electronic module K sends a signal to drive the electromagnetic tripping mechanism M, so that the movable iron core M01 in the electromagnetic tripping system moves upwards under electromagnetic force to overcome the magnetic spring M03, the connecting part M01a of the movable iron core M01 is linked with the closing lock catch I01, the closing lock catch I01 rotates, the buckling part I01b on the closing lock catch I01 is separated from the handle buckling groove E01K, the inner side surface of the buckling rod I01a is separated from the end surface E01J of the handle buckling groove, and the handle E01 drives the movable contact J01 and the fixed contact J02 to be separated under the release of the handle pressure spring E02, so that the mechanical break point is disconnected, and a circuit is disconnected.

In addition, the embodiment of the invention further realizes auxiliary tripping protection through the emergency stop device, wherein the specific structure and the working principle of the emergency stop device are described in the following.

4. Scram device

Aiming at the problems that the existing circuit breaker cannot be suddenly stopped when in fault and the risk of products is high, the embodiment of the invention is provided with the emergency operation button and the corresponding micro switch, so that the breaking of the electronic solid-state switch device after the mechanical breaking point is realized, the emergency state is convenient to process, and the safety of personnel and a system is protected when in fault.

As shown in fig. 14 to 18, the circuit breaker emergency stop device according to the embodiment of the present invention includes an emergency stop button F01 and an emergency stop micro switch Q02, wherein the emergency stop button F01 is used for triggering the emergency stop micro switch Q02 to send a signal to switch off the electronic solid-state switching device in advance when in an overhaul or emergency state, and then the mechanical switch is switched off by driving a switch-on lock I01 of the mechanical switch to be separated from a switch-on operation mechanism handle E01 of the circuit breaker, that is, by configuring the emergency stop button F01, the mechanical break point is switched on first and then switched off.

Referring to fig. 4-13, the specific structure and working process of the emergency stop device are as follows, the head F01a of the emergency stop button passes through the via hole a01b of the emergency stop button on the casing mask a01 of the circuit breaker and is limited by the step F01F of the head of the emergency stop button, the tail of the emergency stop button is provided with a micro-switch triggering part and a closing lock triggering part according to the pressing direction of the emergency stop button, the micro-switch triggering part is a micro-switch triggering lug F01c positioned at the tail end of the emergency stop button, the arc-shaped closing lock triggering concave part F01b close to the tail end of the emergency stop button is positioned at the opposite side of the emergency stop button F01 respectively. Therefore, the emergency stop button F01 can trigger the solid-state switch to be turned off, and then the buckling part of the closing lock catch I01 is driven to be separated from the handle buckling groove of the handle E01 to be unlocked. Correspondingly, the scram micro switch is arranged on a PCB fixed on the base A02 of the circuit breaker shell, and sends out a signal when the scram button F01 is touched. In particular, to facilitate monitoring of the circuit breaker, the emergency stop button F01 is configured with a displacement sensor to detect the state in real time.

Preferably, the emergency stop button F01 is configured with an emergency stop pressure spring F02, two ends of the emergency stop pressure spring F02 are respectively abutted against the emergency stop button F01 and the breaker housing base a02 to reset the emergency stop button, specifically, an emergency stop pressure spring moving groove F01d is formed in the middle of the emergency stop button F01, the emergency stop pressure spring F02 is arranged in the emergency stop pressure spring moving groove F01e, two ends of the emergency stop pressure spring F02 are respectively attached to an emergency stop pressure spring positioning column F01g on the emergency stop button and an emergency stop block a02a on the housing base a02, and in the pressing process, the emergency stop pressure spring moving groove F01d slides back and forth in front of the emergency stop block a02a, and the emergency stop pressure spring F02 is compressed and released under the action of the emergency stop block a02 a.

During maintenance and emergency, the scram button F01 is manually pressed, the head part F01a of the scram button is assembled in the scram button through hole A01b of the mask A01 to move, the surface of the mask A01 is protruded under the elastic force of the scram pressure spring F02 in an initial state, the scram pressure spring F02 is assembled in the scram pressure spring moving groove F01e of the scram button F01, the tail part of the scram pressure spring F02 is limited with the scram stop A02a on the base A02, and when the scram button F01 is pressed, the micro switch Q02 is pushed by the micro switch triggering bump F01c on the scram button F01, wherein the scram micro switch Q02 is fixed on a single PCB, and the PCB is fixed on the base A02. The scram micro switch Q02 is pushed and then sends out a signal to disconnect the electronic solid state switching device in advance so as to disconnect the electronic solid state switching device in advance. Then, the closing lock catch trigger concave part F01b on the emergency stop device F01 presses down the buckling part I01b on the closing lock catch I01, so that the buckling part I01b on the closing lock catch I01 is separated from the handle buckling groove E01k of the handle E01, the operating button E01 drives the moving contact J01 to be separated from the fixed contact J02 under the release of the button pressure spring E02, the limiting end face E01n of the second seat block of the handle E01 stops moving after touching the front plate A01F of the face mask A01, the opening state is kept, and the mechanical break point is opened, so that the circuit is disconnected. After the emergency stop device F01 is released, the emergency stop device F01 is reset under the action of the emergency stop pressure spring F02, and the head step F01F on the emergency stop device F01 is limited with the front plate A01F of the mask A01, so that the head step F01 returns to the initial position.

5. Brake-separating locking device

Aiming at the problem that the existing circuit breaker can be switched on when not installed in a cabinet, and is easy to cause false switching on and unsafe, the embodiment of the invention is characterized in that when not installed in a machine frame, the locking device limits the switching-on device and cannot switch on. After the machine frame is installed, the locking device limits and unlocks the closing device, and then the closing device can reliably close. Therefore, the false switching-on can be prevented, and the safety is improved.

As shown in fig. 19 to 22, the opening locking device of the intelligent electromechanical hybrid circuit breaker according to the embodiment of the invention comprises an opening locking piece G01 rotatably installed on a circuit breaker housing, wherein the opening locking piece G01 is in a lifted state when the circuit breaker is not installed in a cabinet of a power distribution cabinet or is not installed in place, so as to prevent a handle E01 of a mechanical switch closing operation mechanism from running in a closing direction to realize opening locking.

The opening locking piece G01 is a triangle-like block, a rotating shaft G02 is arranged in a shaft hole of the opening locking piece shaft sleeve G01e at the first end of the opening locking piece G01, and the rotating shaft G02 is fixed in a rotating shaft seat A01G of the mask A01.

Referring to fig. 3-18, a second end of the brake release locking member is provided with a brake release locking member locking portion to limit the handle, specifically, a locking boss G01d is provided at the second end of the brake release locking member G01, and the locking boss G01d at the end of the brake release locking member is matched with a locking boss E01m at the tail end of the handle E01 to limit, wherein the brake release locking member locking boss G01d and the handle locking boss E01m are respectively configured with cambered surfaces, that is, both form a cam structure. The breaking locking piece G01 is provided with a resetting piece, two ends of the resetting piece respectively act on the breaker shell and the breaking locking piece G01, so that the breaking locking piece G01 is in a lifting state when the breaking locking piece G01 is not installed in the power distribution cabinet, wherein the resetting piece is specifically a torsion spring G03 which is sleeved on a rotating shaft G02 of the breaking locking piece, one foot is abutted against the breaker shell, and the other foot is inserted into a spring bearing hole G01c of the breaking locking piece G01. In this way, the torsion spring G03 causes the brake release lock G01 to be in a lifted state at the time of brake release. Here, a handle compression spring E02 is disposed at the tail of the handle E01, and the handle is in a reset state when the brake is released.

When the product is not loaded into the power distribution cabinet, the initial state is in a brake separating state, the operating button D01 and the handle E01 are in a protruding state, the brake separating locking piece G01 is in a lifting state under the action of the spring force of the torsion spring G03, and the side face of the middle limiting boss G01b on the brake separating locking piece G01 is limited with the side face of the brake separating locking piece through hole of the mask A01. The locking lug E01m on the handle E01 is limited by the locking lug G01d on the opening locking piece G01, so that the handle E01 cannot move towards the closing direction. Only after the switch board is installed, the switch-off locking piece G01 is always in a pressed state under the action of the switch board, at the moment, the top surface G01a of the switch-off locking piece is limited with the inner wall of the face mask A01, and the locking lug E01m on the handle E01 and the locking boss G01d on the switch-off locking piece G01 are in a yielding state, so that the handle E01 can be switched on freely.

Meanwhile, if the initial state of the circuit breaker is not in a brake-separating state during assembly, namely in a brake-closing state, the brake-separating locking piece G01 is in a lifting state under the action of the torsion spring G02, the handle E01 is pulled at the moment, and the brake-separating locking piece G01 is pressed down by the unlocking convex column E01d on the handle E01 in the pulling process, so that a product is separated, and the brake-separating locking piece G01 is lifted again under the action of the torsion spring G02 after the brake separation, so that the brake-separating locking state is maintained.

6. Fixed unlocking device

For the normal pulling-out of the existing product, tools are needed, the risk of being pulled out by mistake exists in the electrified state, and the embodiment of the invention is separated from the clamping groove of the power distribution cabinet by controlling the rotation of the fixed unlocking device, and the whole product is separated from the power distribution cabinet simply by pulling out the operation button, so that the operation is simple and convenient, and the safety is high.

As shown in fig. 23-26, the circuit breaker fixing and unlocking device according to the embodiment of the invention includes a cabinet locking member H01 and a cabinet unlocking member. The cabinet locking piece H01 is rotatably arranged on the circuit breaker shell, and the cabinet locking piece H01 is in a lifting state when the circuit breaker is arranged in the power distribution cabinet, so that the cabinet locking boss H01d is exposed out of the circuit breaker shell and is matched with the clamping groove of the power distribution cabinet to limit. The cabinet unlocking piece is inserted into the shell mask A02, and an unlocking part for driving the lower hem of the cabinet locking piece H01 is arranged on the cabinet unlocking piece and is used for driving the lower hem of the cabinet locking piece H01 to enable the cabinet locking boss to be separated from the cabinet clamping groove of the power distribution cabinet; after the cabinet unlocking piece is pulled out, the cabinet unlocking piece drives the cabinet locking piece H01 to swing downwards, so that a first protrusion H01d on the cabinet locking piece H01 moves downwards into a cavity between the shell bottom cover A02 and the upper cover A03, and therefore unlocking of the circuit breaker and the cabinet is achieved.

In this embodiment, the cabinet locking member H01 is a triangle-like block, one end of the cabinet locking member H01 is provided with a first protrusion H01e, and a shaft sleeve is disposed on the first protrusion H01e to penetrate into the rotating shaft G02, wherein two ends of the rotating shaft G02 are connected to the inner side wall of the circuit breaker housing, so that the cabinet locking member H01 swings around the rotating shaft G02. One end of the cabinet locking piece H01 is provided with an upward second bulge H01d, the second bulge H01d serves as a locking boss of the cabinet locking piece to penetrate through a cabinet locking piece penetrating opening between the shell bottom cover A02 and the upper cover A03, one side surface of the second bulge H01d is an arc surface, when the circuit breaker is installed in the cabinet, the cabinet touches the arc surface and the cabinet locking piece H01 swings downwards in a small amplitude, after the circuit breaker is installed in place in the cabinet, the cabinet locking piece H01 swings upwards automatically under the acting force of the torsion spring G03, and therefore the circuit breaker can be conveniently installed in a power distribution cabinet smoothly and locked. The middle part lower extreme of rack locking piece H01 is equipped with the connecting block, is equipped with the third arch H01b on the connecting block portion, and the external force of rack unlocking piece is born as rack locking piece H01's unblock portion to the third arch H01b, carries out the lower hem from this for rack locking piece locking boss breaks away from the switch board rack draw-in groove.

Referring to fig. 4-22, the cabinet unlocking member in this embodiment includes a linked handle E01 and an operation button D01, a handle shaft cavity is provided in the handle E01, and the operation button D01 includes a circular pressing cover and a pressing rod connected to the bottom of the pressing cover, and the pressing rod is inserted into the handle shaft cavity E01 h. The two sides of the handle shaft cavity are provided with handle shaft cavity side grooves, the two sides of the pressing rod are provided with pressing rod side surface convex blocks D01b, and the pressing rod side surface convex blocks are positioned in the handle shaft cavity side grooves and are in sliding connection with the handle shaft cavity side grooves, and the assembly relation is further referred to the previous description. Thus, the operation button D01 and the handle E01 can be interlocked. Unlocking can be achieved through the cooperation of the pressing rod tail protruding block D01E and the third protrusion H01b on the cabinet locking piece H01, when the operating button D01 and the handle E01 are dragged outwards, the third protrusion H01b drives the cabinet locking piece H01 to swing downwards, and the second protrusion, namely the locking boss, on the cabinet locking piece H01 is separated from a cabinet clamping groove of the power distribution cabinet to unlock.

In this embodiment, the cabinet locking member H01 is configured with a reset member, two ends of the reset member are respectively applied to the circuit breaker housing and the cabinet locking member H01, so that the cabinet locking member is in a lifted state when being installed into the power distribution cabinet, wherein the reset member is specifically a torsion spring G03, which is sleeved on a rotating shaft G02 of the cabinet locking member, one leg is abutted to the circuit breaker housing, and the other leg is inserted into a spring bearing hole H01c of the cabinet locking member H01. Thus, the torsion spring enables the cabinet locking piece to be in a lifting state when the cabinet locking piece is separated from the door.

Incidentally, in order to simplify the structure, the above rotary shaft G02 and torsion spring G03 are shared by the cabinet lock member H01 and the opening lock member G01, so that the circuit breaker product is more compact; of course they may also be provided separately.

When the product is switched on, under the action of the spring force of the torsion spring G03, the cabinet locking piece H01 is in a lifting state, and the upper side edge H01a of the cabinet locking piece H01 is limited with the top wall A03a of the upper cover A03. As shown in fig. 24, the second protrusion H01d on the cabinet locking member H01 is limited with the slot of the power distribution cabinet, and the whole product cannot be pulled out. At this time, the emergency stop button is pressed, the handle E01 has certain displacement in the brake separating process and does not touch the cabinet locking piece H01, and the brake can be reliably separated as shown in a figure 25. Only when the switch-off state is shown in fig. 25, at this time, the tail bump D01E of the operating button D01 is close to the third bump H01b on the fixed cabinet locking member H01, when the handle E01 is pulled out manually, and the operating button D01 is pulled out synchronously, the fixed cabinet unlocking block H01b drives the tail bump D01E of the operating button D01 to rotate the cabinet locking member H01, so that the cabinet stop block H01D is separated from the cabinet clamping groove, after that, the operating button D01 is pushed to the side bump D01b of the lever and the feature E01D on the handle E01 are limited, the operating button stops pulling out, and the whole product can be separated from the power distribution cabinet by continuously pulling out the operating button D01. After the cabinet is pulled out, the operation button D01 and the handle E01 keep on a tightly-attached state under the action of the button pressure spring D02, and the cabinet locking piece H01 is restored to a raised protruding state under the action of the torsion spring G03.

7. Wiring system

The wiring system comprises a wire inlet end system and a wire outlet end system, wherein the wire inlet end system is provided with an anode wire inlet module, a cathode wire inlet module and a communication module, and the wire outlet end system comprises two sets of wiring boards and wiring elastic pieces.

As shown in fig. 27, the communication module according to the embodiment of the present invention includes a module base L01 and jointing clamps L02 and L03, the jointing clamps L02 and L02 are flexible jointing clamps, and they are assembled in corresponding grooves L01a of the module base L01, so that the modular structure is more convenient for wiring and installation, and meanwhile, the number of jointing clamps can be increased to 4 according to the system communication requirements.

As shown in fig. 28, a specific wiring manner in the embodiment of the present invention is as follows. The binding clip clamping parts of the negative electrode wire inlet module C01, the binding clip clamping parts of the communication module L01 and the binding clip clamping parts of the positive electrode wire inlet module C02 are sequentially arranged in the insertion direction instead of being positioned at the same position, namely the distances from the clamping parts of the binding clips to the wire inlet ports are arranged from small to large, so that the electric power and communication wire inlet time sharing access is facilitated. When the whole circuit breaker product is transversely inserted into the cabinet, the busbar is firstly contacted with the clamping part of the binding clip of the negative pole incoming line module C01, the clamping part of the binding clip of the communication module L01 is next, and the clamping part of the binding clip of the positive pole incoming line module C02 is last. The electrode incoming line and the communication wiring are connected in a time-sharing mode when the system is connected, the negative electrode is guaranteed to be contacted firstly, the communication is conducted secondly, and finally the positive electrode is contacted, so that the control circuit is guaranteed to be grounded reliably firstly, and impact influence generated during system plug-in is prevented.

As shown in fig. 29-30, the wire outlet end system of the embodiment of the invention adopts a quick wire connection mode, the curled portion P01c of the wire connection spring P01 is installed in the spring plate installation cavity a01j of the mask a01, meanwhile, the curled portion P01c of the wire connection spring P01 is wound on the spring plate fixing seat a01k in the spring plate installation cavity a01j, meanwhile, the limit portion P01a of the wire connection spring and the limit portion of the spring plate installation cavity a01j on the mask a01 are matched and limited, a wire is manually or directly inserted into a wire hole in the corresponding wire connection hole of the mask a01 to contact with the wire connection plate B01, the wire is kept connected with the wire connection plate B01 under the deformation of the spring plate compression portion P01B, the corresponding limit of the spring plate P01a and the spring plate can effectively prevent the spring plate from rotating, the deformation of the spring plate connection is ensured, the wire connection of the whole wire outlet end system is enabled to be more reliable, and the wire connection is integrated in the mask a01 through the corresponding limit feature in the mask, and the wire connection is simple and convenient.

8. Detection indication system

As shown in fig. 31, when the moving contact J01 acts during the opening and closing process, the moving contact bump J01b on the moving contact will trigger the micro switch S01 at the corresponding position, so as to give a signal to the system to indicate the on-off state of the mechanical switch. The micro switch required for position detection and the LED lamp indicating the on-off state of the solid state switching device are fixed on the corresponding Printed Circuit Board (PCB) N01, which is specifically assembled between the housing mask and the base a 02.

Therefore, when the contact position detects that the system fails and needs to be disconnected by a mechanical breakpoint, a tripping signal is sent out, so that a result can be effectively responded to the system to form a logic closed loop, and the safety of the system and personnel is ensured to be protected maximally. Meanwhile, the state indication of the LED lamp of the solid-state switch is set, so that maintenance personnel can be guaranteed to find out the fault line quickly, and maintenance personnel can be conveniently maintained to maintain the fault line.

9. Heat dissipation system

In the embodiment of the invention, the radiator R01 is formed by extrusion of aluminum material at one time, is assembled with the shell in a buckling mode, and does not need to be fixed by screws and needs to be processed for the second time as in the traditional radiator design.

As shown in fig. 32 to 33, the heat sink R01 designed according to the present invention is snapped into the heat sink slot a02e and the heat sink slot a02h on the base a02 from above the housing through the snap grooves R01b and R01 c. After the insertion is completed, the board body K01a of the circuit board K01 in the electronic module is clamped by the clamping block A02g and the clamping block A02f on the base A02 to block the radiator R01, so that the radiator R01 is prevented from moving forwards and backwards. After the upper cover a03 is covered, the upper cover heat radiation cover a03b covers the radiator side wall R01a, preventing the radiator from moving up and down. Thereby firmly fixing the heat sink.

Therefore, the radiator has a simple structure, simplifies the assembly process and is more beneficial to industrial production and manufacture.

The above preferred embodiments of the circuit breaker of the present invention are primarily suitable for use in low voltage dc distribution applications, which are improved over the various drawbacks of the prior art, with the following advantages over conventional plug-in circuit breaker products.

1. The overload protection of the existing miniature circuit breaker generally adopts a thermal double-metal protection mechanism, the instantaneous short-circuit protection generally adopts an electromagnetic instantaneous mechanism for short-circuit protection, the response time is millisecond-level, and the overload protection can be accompanied with the generation of an electric arc, so that the response time is longer, and the disconnection is not facilitated. The invention eliminates the thermal double-gold and electromagnetic instantaneous mechanism and the arc extinguishing mechanism by means of the combination of the electronic solid-state switching device and the mechanical structure, realizes the arc-free breaking, and improves the response speed, breaking capacity and service life.

2. The existing miniature circuit breaker only has a single mechanical breakpoint, and when the mechanical breakpoint cannot be broken, the load equipment is in fault risk and cannot be protected. The above preferred embodiments of the present invention prevent single point failure by combining solid state switches and mechanical breakpoints to double protect the load device.

3. When the existing miniature circuit breaker is used under the condition of polarity requirement, besides the positive and negative poles which are clearly identified and described, the problem of reverse connection sometimes occurs in the actual construction process, so that the equipment is at risk of failure. The above preferred embodiment of the present invention solves the problem of reverse connection of positive and negative electrodes by triggering the trip mechanism by recognizing the voltage direction via electronics to open the mechanical break point.

4. After the fault is tripped, the existing miniature circuit breaker needs to be manually reset every time, has no selective protection and cannot be reset manually by setting the fault type. The above preferred embodiment of the present invention opens logic in preference to mechanical breakpoints through the solid state switch, and only needs to close the solid state device after fault removal, so that the power supply can be recovered by remote communication without manual reset.

5. The existing miniature circuit breaker needs to uniformly open and close and break branches of a power distribution cabinet by means of a relay, and can not be controlled by branching. The invention can independently control each path of load by means of the solid-state switching device and the communicable interface.

6. The existing miniature circuit breaker has no clearly-identified operation measures when encountering emergency, lacks a single operation mechanism for emergency stop, and improves the risks of personnel and equipment. The above preferred embodiment of the invention is to design the emergency stop button to be linked with the tripping mechanism, so as to rapidly disconnect the mechanical break point in emergency, thereby reducing the further damage of faults to the power utilization system.

7. The existing miniature circuit breaker can perform switching-on operation when not installed in a cabinet, and error switching-on is easy to cause. The safety of the installation and use of the circuit breaker cannot be ensured. The above preferred embodiment of the present invention can realize that the switch can not be closed without insertion by a mechanical opening and closing locking device, thereby avoiding misoperation.

8. After the existing miniature circuit breaker is installed in place, the risk of being pulled out by mistake exists in the electrified state, so that the circuit breaker is not beneficial to reliably and stably working, and potential safety hazards exist. The above preferred embodiment of the invention can be unplugged in a non-opening state by mechanically fixing the unlocking locking device, thereby reducing the risk of false unplugging in an energized state.

9. The existing miniature circuit breaker generally adopts an elastic sheet to lock a product in a cabinet, and an additional tool is needed to be used for unlocking and taking out from the cabinet, so that the operation is inconvenient. The above preferred embodiment of the invention can realize locking and pulling out of the product after opening the gate without additional tools through a mechanical unlocking mechanism.

10. The interface between the existing miniature circuit breaker product and the outside is not a single point and can not be communicated, and the communication is not carried out through direct external wiring. The above preferred embodiment of the invention is made into a modularized assembly in the product through an external communication interface, and is more beneficial to installation and maintenance by adopting plug-in type.

11. The prior miniature circuit breaker adopts synchronous contact during wiring. The above preferred embodiment of the invention ensures that the negative electrode contacts firstly and the positive electrode contacts secondly and finally the positive electrode contacts by adopting time-sharing access when the wiring and the communication module are accessed into the system and by different clamping characteristic positions on the wiring clamp, thereby ensuring that the control circuit is grounded reliably firstly and preventing impact influence generated during the plugging and unplugging of the system.

The foregoing is merely a preferred embodiment of the present invention, and it should be noted that the above-mentioned preferred embodiment should not be construed as limiting the invention, and the scope of the invention should be defined by the appended claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.

Claims

1. The opening locking device is characterized in that the circuit breaker comprises a mechanical switch and an electronic solid-state switching device which are connected in series and can be controlled by an MCU (micro control Unit), the opening locking device comprises an opening locking piece rotatably installed on a circuit breaker shell, the opening locking piece is in a lifting state when the circuit breaker is not installed in a power distribution cabinet, so that a handle of a mechanical switch closing operating mechanism is prevented from running towards a closing direction to realize opening locking, a handle body in the middle of the handle is installed on the circuit breaker shell, the head of the handle can be exposed out of the shell mask, and a handle pressure spring is arranged at the tail of the handle; the middle part of the moving contact penetrates through the contact passing groove on the first seat block at the bottom of the handle body and is supported on the contact bearing platform on the first seat block at the bottom of the handle body; the opening locking piece is in a pressed state under the action of a cabinet of the power distribution cabinet after the power distribution cabinet is installed in the power distribution cabinet, the top surface of the opening locking piece is limited with the inner wall of a face mask of the shell of the power distribution cabinet, a locking lug on the handle and a locking boss on the opening locking piece are in a yielding state so that the handle can be switched on, and after the opening, the handle can be pulled outwards to enable the handle unlocking convex column to press the opening locking piece, so that the opening locking piece is lifted again to keep the opening locking state.

2. The intelligent electromechanical hybrid circuit breaker release locking apparatus of claim 1, wherein a torsion spring is provided, both ends of the torsion spring respectively acting on the circuit breaker housing and the release locking member so that the release locking member is in a lifted state when not installed in the power distribution cabinet.

3. The intelligent electromechanical hybrid circuit breaker trip locking apparatus of claim 2 wherein the torsion spring is a torsion spring having one end inserted into the circuit breaker housing and the other end inserted into the trip locking member spring aperture.

4. The intelligent electromechanical hybrid breaker opening locking apparatus of claim 3, wherein the torsion spring is sleeved on the rotating shaft of the opening locking member.

5. The intelligent electromechanical hybrid circuit breaker trip locking apparatus of claim 1, wherein the trip locking member is rotatably mounted at a first end to a fixed shaft on the circuit breaker housing and wherein the trip locking member is provided at a second end with a trip locking member locking portion to limit the handle.

6. The intelligent electromechanical hybrid breaker opening locking apparatus of claim 5, wherein the opening locking member first end is provided with an opening locking member sleeve, and the opening locking member sleeve is sleeved on the rotating shaft.

7. The intelligent electromechanical hybrid breaker opening locking apparatus of claim 5, wherein the opening locking member second end is provided with an opening locking member locking boss, and the opening locking member locking boss cooperates with the handle opening locking boss to limit.

8. The intelligent electromechanical hybrid breaker opening locking apparatus of claim 7, wherein the opening locking piece locking boss and the handle opening locking projection are respectively provided with arc surfaces.

9. The intelligent electromechanical hybrid breaker opening locking apparatus of claim 7, wherein the opening locking member is a triangle-like block.

10. The intelligent electromechanical hybrid breaker opening locking apparatus according to any one of claims 1 to 9, wherein a handle compression spring is provided at a handle tail portion, one end of the handle compression spring abuts against a handle tail shaft hole, and the other end of the handle compression spring abuts against a handle baffle plate on the base.