CN114637229B - A circuit breaker and its accessory module - Google Patents
A circuit breaker and its accessory module Download PDFInfo
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- CN114637229B CN114637229B CN202011481832.1A CN202011481832A CN114637229B CN 114637229 B CN114637229 B CN 114637229B CN 202011481832 A CN202011481832 A CN 202011481832A CN 114637229 B CN114637229 B CN 114637229B
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- circuit breaker
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- sampling
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Program-control systems
- G05B19/02—Program-control systems electric
- G05B19/04—Program control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Program control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24215—Scada supervisory control and data acquisition
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Breakers (AREA)
Abstract
The circuit breaker and the accessory module thereof comprise at least one control module and at least one sampling module, wherein the control module is detachably assembled on the side face of the circuit breaker, the sampling module is detachably assembled at two ends of the circuit breaker, which are provided with wiring terminals, the at least one sampling module is arranged on the wiring terminal side of the circuit breaker, the sampling module transmits signals acquired from the circuit breaker to the control module, the control module comprises a control unit and a functional unit, and the control module drives the functional unit to act according to the signals transmitted by the sampling module. The accessory module is assembled on the existing circuit breaker in an assembling mode, so that the existing circuit breaker is quickly and simply improved, the circuit breaker has multiple functions of sampling, automatic switching-on and switching-off and the like, and the assembling improvement of the existing circuit breaker is facilitated.
Description
Technical Field
The invention relates to a low-voltage electrical appliance, in particular to a circuit breaker and an accessory module thereof.
Background
The low-voltage circuit breaker is also called an automatic air switch or an automatic air circuit breaker, can be used for distributing electric energy and protecting overload and short circuit of a circuit and power equipment, and can also be used for infrequent switching of the circuit and infrequent starting of a motor. The traditional circuit breaker generally only has short-circuit protection and overload protection functions, and with the improvement of living standard of people, more demands are put forward on electricity safety by power grid companies, for example, the circuit breaker is required to be automatically switched on and off, has the functions of leakage protection, monitoring the running state of the circuit breaker and the like, the traditional circuit breaker cannot meet the actual requirements due to single function, but the traditional circuit breaker is high in cost and difficult to operate in mass replacement.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a circuit breaker and an accessory module thereof, which are simple and convenient to assemble and complete in function.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The accessory module of the circuit breaker comprises at least one control module and at least one sampling module, wherein the control module is detachably assembled on the side face of the circuit breaker, the sampling module is detachably assembled at two ends of the circuit breaker, which are provided with wiring terminals, the sampling module transmits signals acquired from the circuit breaker to the control module, the control module comprises a control unit and a functional unit, the control module drives the functional unit to act according to the signals transmitted by the sampling module, the sampling module comprises an electronic element for acquiring signals of a main circuit of the circuit breaker, and the electronic element comprises a current transformer and/or a zero sequence transformer and/or a temperature transformer and/or a voltage sampling circuit.
Further, the binding post of circuit breaker includes incoming line terminal and outgoing line terminal, sampling module's quantity is two, and two sampling module respectively detachable assembly is equipped with incoming line terminal and outgoing line terminal's both ends at the circuit breaker.
Further, the number of the sampling modules is two, a current transformer for collecting current signals in the main circuit of the circuit breaker is arranged in one sampling module, and a zero sequence transformer for collecting leakage current signals in the main circuit of the circuit breaker is arranged in the other sampling module.
Further, sampling module includes first mounting be provided with first circuit board in the first mounting be connected with on the first circuit board and get the electric plate, current transformer is connected with first circuit board, get the electric plate be used for being connected with the binding post of circuit breaker, first mounting is equipped with the through wires hole in the mounted position that corresponds current transformer, and current transformer will sense current signal transmission to first circuit board.
Further, sampling module includes first mounting be provided with first circuit board in the first mounting be connected with on the first circuit board and get the electricity board, zero sequence transformer is connected with first circuit board, and first mounting is equipped with the through wires hole in the mounted position that corresponds zero sequence transformer, and zero sequence transformer will sense leakage current signal transmission to first circuit board.
Further, a temperature sensor is further connected to the first circuit board, the temperature sensor is in contact with the power taking plate and used for acquiring the temperature of the wiring terminal of the circuit breaker, and the temperature sensor transmits a temperature signal to the first circuit board.
Further, the sampling module includes first mounting, first mounting includes first mounting groove and second mounting groove, first mounting groove is used for installing first circuit board, the second mounting groove is used for installing current transformer or zero sequence transformer, and the second mounting groove is located the below of first mounting groove be equipped with the through wires hole that is used for making the wire pass in the second mounting groove.
Further, a separation protrusion is arranged in the second mounting groove, the separation protrusion separates the second mounting groove into at least two second sub mounting grooves, and a threading hole is correspondingly arranged in each second sub mounting groove.
Further, the second mounting groove is in a capsule shape, the side wall of the separation protrusion is an arc-shaped concave surface, and the separation protrusion separates to form a circular second sub mounting groove.
Further, the first circuit board is installed in first mounting groove, and the front of first circuit board orientation circuit breaker is equipped with gets the electric plate and is used for the plug of being connected with control module, and the back of first circuit board is equipped with temperature sensor, gets the electric plate and runs through first circuit board, and one end is used for being connected with the binding post of circuit breaker, and the other end is connected with temperature sensor contact.
Further, the two sampling modules are respectively connected with a wire inlet terminal and a wire outlet terminal of the circuit breaker, wherein the sampling modules connected to the wire inlet terminal are connected with the wire inlet terminal to provide working power for the whole accessory module.
Further, the sampling module comprises an electronic element and a first microprocessor, wherein the electronic element is used for collecting signals of a main circuit of the circuit breaker, and the electronic element is connected with the first microprocessor.
Further, the functional unit comprises an automatic opening and closing unit and/or an alarm indicating unit and/or a release unit.
Further, the control module further comprises a communication unit, and the communication unit is connected with the control unit.
Further, the number of the control modules is at least two, wherein the functional unit of one control module comprises an automatic opening and closing unit, and the functional unit of the other control module comprises an alarm indication unit and/or a release unit.
Further, the control module comprises a second fixing piece, the second fixing piece comprises a base and an upper cover, a hook assembled on the circuit breaker is arranged on the base, and a groove matched with the hook is formed in a shell of the circuit breaker.
Further, the control module comprises a second circuit board and an automatic switching-on/off unit, the automatic switching-on/off mechanism comprises a control handle, a transmission mechanism and a tripping structure, the control handle is connected with a handle of the circuit breaker in a linkage manner, the control handle is connected with the transmission mechanism in a linkage manner, the tripping structure is linked with an operating mechanism of the circuit breaker, a controller is arranged on the second circuit board, the controller can drive the control handle to drive the handle of the circuit breaker to realize switching-on operation of the circuit breaker according to a signal from the sampling module to control the transmission mechanism, and the controller can control the transmission mechanism to drive the tripping structure to trigger the operating mechanism of the circuit breaker to trip so as to realize switching-off operation of the circuit breaker.
Further, the control module comprises a second circuit board and a release unit, the release unit comprises a release, a controller is arranged on the second circuit board, and the controller can control the release to trigger an operating mechanism of the circuit breaker to release according to signals from the sampling module.
Further, the control module is also provided with a test button and a test circuit operated by the test button for generating an analog leakage current.
The sampling module and the control module carry out signal transmission through the signal transmission unit, the signal transmission unit comprises a plug arranged on the first circuit board and a socket arranged on the second circuit board, and the signal transmission between the signal unit and the controller is realized by the cooperation of the plug and the socket.
Further, the number of control module is a plurality of, and a plurality of control module set up in the same side of circuit breaker side by side, signal transmission unit still includes the intermediate circuit board, is equipped with the expansion plug of being connected with the intermediate circuit board on the first circuit board be equipped with intermediate plug and intermediate socket on the intermediate circuit board, intermediate socket cooperates with the expansion plug of first circuit board, and intermediate plug cooperates with the socket of second circuit board respectively.
Further, the intermediate circuit board further includes a second extension plug for mating with another intermediate circuit board.
A circuit breaker, an accessory module of the circuit breaker is installed.
The circuit breaker comprises a shell, at least two phase poles are arranged in the shell, each phase pole comprises connecting terminals arranged at two ends, the accessory module is assembled on the shell, and the sampling module is connected with the connecting terminals of each phase pole of the circuit breaker.
According to the circuit breaker and the accessory module thereof, the accessory module is assembled on the existing circuit breaker in an assembling mode, the existing circuit breaker is quickly and simply improved, the accessory module is matched with the control module together by the sampling module, the control module obtains the running state of the circuit breaker through the sampling module and drives the functional unit to act according to the running state, so that the circuit breaker has multiple functions of sampling, automatic switching-on and switching-off and the like, and the assembling improvement of the existing circuit breaker is facilitated.
In addition, the electronic element arranged on the first circuit board in the sampling module can collect different signals through free combination, so that the requirements of different circuit breakers on signal collection are met.
In addition, the control module is provided with a communication unit, so that communication connection among the circuit breaker, the client side and the circuit breaker and the equipment can be realized.
Drawings
FIG. 1 is a schematic diagram of an accessory module of the present invention;
FIGS. 2-4 are schematic diagrams of a circuit breaker and its accessory modules according to the present invention;
Fig. 5 is a schematic structural view of a circuit breaker and an accessory module thereof according to the present invention;
fig. 6 is a schematic view of the circuit breaker (circuit breaker without accessory module assembled) according to the present invention;
fig. 7 to 8 are schematic structural diagrams of the circuit breaker according to the present invention;
FIG. 9 is a schematic diagram of an accessory module of the present invention;
FIGS. 10-12 are schematic diagrams illustrating the structure of a sampling module according to the present invention;
FIG. 13 is a schematic view of the structure of the first fixing member of the sampling module according to the present invention;
Fig. 14 is a schematic diagram of the structure of the sampling module (assembled with zero sequence transformer) in the present invention;
Fig. 15 is a schematic diagram of the structure of the sampling module (assembled current transformer) in the present invention;
FIG. 16 is a schematic view of the structure of the sampling module (equipped with a temperature sensor) of the present invention;
fig. 17 is a schematic view of the structure of the sampling module (assembled intermediate circuit board) in the present invention;
fig. 18 to 20 are schematic structural diagrams of an intermediate circuit board according to the present invention;
FIG. 21 is a schematic view of the control module (near the top cover side) of the present invention;
fig. 22 is a schematic structural view of the tripping mechanism and the operating mechanism of the circuit breaker in the present invention;
Fig. 23 to 25 are schematic structural views (near the base) of the control module according to the present invention.
Detailed Description
Embodiments of a circuit breaker and its accessory module according to the present invention are further described below with reference to the examples shown in fig. 1 to 25. A circuit breaker and an accessory module thereof of the present invention are not limited to the description of the following embodiments.
As shown in fig. 1-8, an accessory module of a circuit breaker comprises at least one control module 2 and at least one sampling module 1, wherein the control module 2 is detachably assembled on the side surface of the circuit breaker 3, the sampling module 1 is detachably assembled at one end or two ends of the circuit breaker 3, which are provided with connecting terminals, at least one sampling module 1 is connected with the connecting terminals of the circuit breaker 3, the sampling module 1 is used for collecting signals reflecting the operation conditions of main lines of each pole of the circuit breaker 3, the sampling module 1 transmits the signals collected from the circuit breaker 3 to the control module 2, the control module 2 comprises a control unit and a functional unit, and the control module 2 judges the operation conditions of the main lines of each pole of the circuit breaker 3 according to the signals transmitted by the sampling module 1 and drives the functional unit to act.
The action of the functional unit comprises the steps of driving the breaker 3 to automatically switch on and off and/or giving out an alarm and/or displaying the state of the breaker and/or remotely communicating with an upper computer and the like. For example, in the embodiment of a control module 2 shown in fig. 21-22, the control module 2 is assembled on the side of the circuit breaker 3 and can be used as a control pole of the circuit breaker 3 to realize automatic opening and closing of the circuit breaker 3, the control module 2 is connected with an operating mechanism 32 (see fig. 22) and a handle of the circuit breaker 3 in a linkage way, and the automatic opening and closing function of the circuit breaker 3 is realized by driving the operating mechanism 32 and the handle to act.
The sampling module 1 comprises one or more than one electronic component for realizing the sampling function, the number of each electronic component can be set according to the pole number of the circuit breaker 3, the electronic components comprise a current transformer 14 and/or a zero sequence transformer 15 and/or a temperature sensor 16 and/or a voltage acquisition circuit and the like, and the electronic components transmit the acquired signals to the control module 2. The control unit of the control module 2 drives the functional units to act according to the operation conditions of the main lines of each pole of the circuit breaker 3 collected by the sampling module 1, and the actions of the functional units comprise driving the circuit breaker 3 to automatically switch on and off and/or giving out warning and the like. For example, the electronic component is a current transformer 14, the control module 2 determines whether an overcurrent exists according to a current signal collected by the current transformer 14, and if the overcurrent lasts for a certain time, the overload fault exists in the circuit breaker 3, the circuit breaker 3 is driven to break to realize circuit protection. For another example, the electronic component is a zero sequence transformer 15, the control module 2 determines whether a leakage current signal exists according to a current signal collected by the zero sequence transformer 15, and drives the breaker 3 to open when the leakage current signal exists. For another example, the electronic component is a temperature sensor 16, and when detecting that the temperature of the wiring terminal of the circuit breaker 3 is higher, the control module 2 controls the functional unit to alarm, and the user is reminded through an indicator light and/or a buzzer. For another example, the electronic component includes a voltage dividing resistor for implementing a voltage sampling circuit, voltage is sampled by the voltage dividing resistor, a voltage signal is transmitted to the control module 2, the control module 2 determines according to the voltage signal, and when there is an undervoltage or overvoltage fault, the breaker 3 is driven to break.
In the application, the accessory module of the circuit breaker comprises one or more control modules 2 and one or more sampling modules 1, the wiring terminals of the circuit breaker 3 comprise a wire inlet terminal and a wire outlet terminal, the sampling modules 1 are correspondingly connected to the wire inlet terminal and/or the wire outlet terminal of the circuit breaker 3, and when two sampling modules 1 respectively connected to the wire inlet terminal and the wire outlet terminal are simultaneously included, the sampling modules 1 connected to the wire inlet terminal preferably provide the working power supply of the whole accessory module.
An embodiment of the assembly of an accessory module of a circuit breaker as shown in fig. 2 comprises a control module 2 and a sampling module 1, wherein the control module 2 is detachably assembled on one side of a four-pole circuit breaker, the sampling module 1 is arranged at one end of a wire inlet terminal of the circuit breaker 3, and the sampling module 1 directly transmits signals acquired from the circuit breaker 3 to the control module 2. The control module 2 comprises a control unit and a functional unit, the control unit comprises a second microprocessor MCU2, and the second microprocessor MCU2 judges signals acquired from the circuit breaker 3 according to the sampling module 1 to drive the functional unit to act. Preferably, the control module 2 is further provided with a communication unit, the communication unit realizes communication connection between the control modules 2 in a wireless or bluetooth mode, correspondingly, the plurality of circuit breakers 3 equipped with the control modules 2 in the embodiment can also realize communication connection through the communication unit, the communication unit can adopt an RS485, a WIFI module, a bluetooth module or a SIM card, and the like, and in addition, the communication unit can also realize signal transmission between the circuit breakers 3 and clients, user APPs, cloud platforms, devices, and the like.
Another embodiment of the assembly of an accessory module of a circuit breaker, as shown in fig. 3, comprises a control module 2 and a sampling module 1, the control module 2 being removably mounted on one side of a four pole circuit breaker. The sampling module 1 includes a signal unit, where the signal unit processes a signal collected by an electronic element and then transmits the processed signal to the control module 2, for example, an analog signal is converted into a digital signal, and a high voltage is converted into a low voltage or a direct current and then transmitted to the control module 2. Preferably, the signal unit includes a microprocessor, which in this embodiment is the first microprocessor MCU1. Preferably, the sampling module 1 includes a signal transmission unit, the sampling module 1 is in signal connection with the control module 2 through the signal transmission unit disposed between the control module 2 and the sampling module 1, and the sampling module 1 transmits the signal collected from the circuit breaker 3 to the control module 2 through the signal transmission unit, or the sampling module 1 transmits the processed signal to the control module 2 through the signal transmission unit. Preferably, the signal transmission unit may also function as a transmission power source. The signal transmission unit enables connection between the sampling module and the control module to be simpler and more convenient, and transmission is facilitated.
Another embodiment of the assembly of an accessory module of a circuit breaker shown in fig. 4 comprises two control modules 2 and two sampling modules 1, wherein the two control modules 2 are detachably assembled on one side of a four-pole circuit breaker side by side, the two sampling modules 1 are respectively detachably assembled at the wire inlet terminals and the wire outlet terminals at two ends of the four-pole circuit breaker, the sampling modules 1 connected with the wire inlet terminals provide power for the whole accessory module, the two sampling modules 1 are respectively connected with the two control modules 2 through respective signal transmission units, the sampling modules 1 are connected with the plurality of control modules 2 through the signal transmission units, and when the plurality of control modules 2 are connected, the signal transmission units also play a role in signal mutual transmission between the control modules 2.
As shown in fig. 9-15 and fig. 17, the sampling module 1 comprises a first fixing piece for assembling the sampling module 2 on the circuit breaker 3, a first circuit board 12 is arranged in the first fixing piece, a power taking board 13 and a plug 121 are connected to the first circuit board 12, the power taking board 13 is used for being connected with wiring terminals of the circuit breaker 3, the number of the power taking boards 13 corresponds to the number of the wiring terminals of each pole of the circuit breaker 3, and the plug 121 is connected with the control module 2 and used for realizing signal transmission between the first circuit board 12 and the control module 2. The power take-off plate 13 and the plug 121 vertically penetrate out of one side of the first fixing piece, wherein the shape and the structure of the power take-off plate 13 are adapted to the structure of the connecting terminal of the circuit breaker 3.
The first circuit board 12 is further connected with one or more electronic components for realizing the sampling function, the number of each electronic component is set according to the pole number of the circuit breaker 3, the electronic components such as the current transformer 14, the zero sequence transformer 15, the temperature sensor 16 and the like, correspondingly, the first circuit board 12 is provided with a signal unit connected with the corresponding electronic component, the signal unit is connected with the control module 2 through a signal transmission unit, the signal unit can transmit signals collected by the electronic component to the control module 2 through the signal transmission unit, and can also transmit signals collected by the electronic component to the control module 2 through the signal transmission unit after being processed. Through the combined arrangement of a plurality of electronic elements, the sampling module 1 can have different signal acquisition functions at the same time. Of course the number of the devices to be used, the signal unit can also be a circuit such as voltage reduction, voltage stabilization, filtering, analog-to-digital conversion and the like.
A first embodiment of the sampling module 1 is provided in connection with fig. 10-12 and fig. 15, the sampling module 1 being a current sampling module, said sampling module 1 comprising a current transformer 14. In this embodiment, the sampling module 1 is configured to detect whether an overcurrent exists in a main circuit of the circuit breaker 3, a first circuit board 12 is disposed in the first fixing member, a power taking board 13 is connected to the first circuit board 12, the current transformer 14 is connected to the first circuit board 12, the power taking board 13 is configured to be connected to a connection terminal of the circuit breaker 3, a threading hole is disposed at an installation position of the first fixing member corresponding to the current transformer 14, a conductor connected to the circuit breaker passes through the threading hole, and when connected to the connection terminal, the current transformer 14 passes through the current transformer 14, so that the current transformer 14 passes through the main circuit of the circuit breaker 3, preferably, the number of the current transformers 14 is multiple, a current transformer 14 is connected to the first circuit board 12 in a penetrating manner on each pole main circuit of the circuit breaker 3, a first microprocessor MCU1 on the first circuit board 12 transmits a current signal to the control module 2 through a signal transmission unit, the control module 2 determines whether an overcurrent exists in the main circuit breaker 3, and when the control module 2 automatically determines that the main circuit breaker 3 passes through the control module, and the control module automatically drives the circuit breaker 2 to operate.
Further, at least one current transformer 14 among the plurality of current transformers 14 is used for arc fault monitoring, the current transformer 14 transmits the collected arc fault signal to the first circuit board 12, the first microprocessor MCU1 of the first circuit board 12 transmits the arc fault signal to the control module 2, and the control module 2 makes the functional unit act after receiving the arc fault signal, for example, drives the breaker 3 to automatically switch off, or makes the breaker 3 send an alarm.
Further, the circuit also comprises a voltage sampling circuit for detecting voltage, voltage sampling is realized through a voltage dividing resistor, a voltage signal is transmitted to the control module 2, the voltage sampling circuit is arranged on the first circuit board 12, and the voltage signal of the circuit breaker is collected through the power taking board 13.
A second embodiment of the sampling module 1 is provided in connection with fig. 14, the sampling module 1 being a leakage sampling module, said sampling module 1 comprising a zero sequence transformer 15. The sampling module 1 comprises a first fixing piece, a first circuit board 12 is arranged in the first fixing piece, an electricity taking board 13 is connected to the first circuit board 12, a zero sequence transformer 15 is connected with the first circuit board 12, and a threading hole is formed in the first fixing piece at the installation position corresponding to the zero sequence transformer 15. In this embodiment, the sampling module 1 is configured to detect whether a main circuit of the circuit breaker 3 has a leakage current, so that the sampling module 1 has a function of detecting whether the main circuit of the circuit breaker 3 has a leakage current, the zero sequence transformer 15 is connected to the main circuit of the circuit breaker 3 in a penetrating manner, preferably the zero sequence transformer 15 is a capsule-shaped zero sequence transformer 15, each pole main circuit of the circuit breaker 3 passes through a central hole of the same zero sequence transformer 15, and of course, a plurality of zero sequence transformers 15 may also be disposed corresponding to each pole main circuit of the circuit breaker 3, but the connection circuits of the plurality of zero sequence transformers 15 are relatively more and have high cost. The leakage current that the zero sequence transformer 15 can detect includes sinusoidal residual current that adds suddenly or slowly rises, smooth direct current etc., the zero sequence transformer 15 transmits the leakage current signal that senses to first circuit board 12, the first microprocessor MCU1 of first circuit board 12 transmits the leakage current signal to control module 2 through the signal transmission unit, control module 2 drives the action of functional unit and makes circuit breaker 3 break the floodgate automatically.
An embodiment of a third sampling module 1 is provided in connection with fig. 16, the sampling module 1 being a temperature sampling module, the sampling module 1 comprising a temperature sensor 16. The temperature sensor 16 is connected to the first circuit board 12, the temperature sensor 16 contacts with the power taking board 13, the temperature of the wiring terminal is obtained through the power taking board 13, so that the sampling module 1 has the function of detecting the temperature rise and the temperature of the wiring terminal, preferably, the power taking board 13 adopts a metal material with better electrical conductivity and thermal conductivity, the temperature sensor 16 can obtain the temperature in a direct contact or non-direct contact mode with the power taking board 13, when the temperature sensor 16 collects the temperature rise or the temperature of the wiring terminal of the circuit breaker 3, the temperature sensor 16 transmits a temperature signal to the first circuit board 12, the first microprocessor MCU1 of the first circuit board 12 transmits the temperature signal to the control module 2 through the signal transmission unit, and the control module 2 drives the functional unit to act. Preferably, the temperature sensor 16 is disposed on the back of the first circuit board 12, the electricity taking board 13 is welded on the first circuit board 12, and the electricity taking board 13 penetrates through the first circuit board 12, one end is used for being connected with a connection terminal of the circuit breaker, and the other end is in contact connection with the temperature sensor 16.
The above three embodiments of the sampling module 1 may be used alone, or any two or three may be used in combination, for example, the current transformer 14 and the zero sequence transformer 15 are simultaneously disposed in the same sampling module 1, or the current transformer 14 and the temperature sensor 16 are simultaneously disposed in the same sampling module 1, or three kinds of them are simultaneously disposed.
Preferably, the accessory module comprises two sampling modules which are respectively arranged at two ends of the circuit breaker 3, the current transformer 14 and the zero sequence transformer 15 are respectively arranged in the two sampling modules 1, the temperature sensor 16 can be arranged in any one sampling module, or the temperature sensor 16 is arranged in both sampling modules 1.
A specific mounting structure of the sampling module 1 is provided in connection with fig. 6 and 9-18, which mounting structure enables the sampling module 1 to be fitted with one or more electronic components. The sampling module 1 comprises a first fixing piece, the first fixing piece comprises a first mounting groove 171 and a second mounting groove 172, the first mounting groove 171 is used for mounting the first circuit board 12, the second mounting groove 172 is used for mounting the current transformer 14 or the zero sequence transformer 15, the second mounting groove 172 is located below the first mounting groove 171, and a threading hole used for a wire to pass through is formed in the second mounting groove 172. Specifically, the first fixing member includes a housing 111 and a cover plate 112, a first mounting groove 171 and a second mounting groove 172 are provided on the housing 111, the cover plate 112 covers the first mounting groove 171 to form a mounting cavity for mounting the first circuit board 12, a plurality of through holes are provided on the cover plate 112, the through holes are used for extending the power taking board 13 and the plug 121 to the first fixing member for being connected with a wiring terminal of the circuit breaker 3, the power taking board 13 and the wiring terminal are fixedly connected and electrically connected through tightening a wiring screw of the wiring terminal, the power taking board 13 can acquire corresponding signals from the wiring terminal, and the sampling module 1 and the control module 2 acquire working power sources through the power taking board 13.
In combination with fig. 9,10, 12, 14 and 15, a structure of a power taking plate 13 is provided, the power taking plate 13 is a straight plate structure, one end of the power taking plate 13 is welded with the first circuit board 12, the other end of the power taking plate 13 penetrates out of the first fixing piece, a groove is formed in one end penetrating out of the first fixing piece and used for being connected with a wiring terminal, a busbar 34 is arranged at the wiring terminal of the power taking plate 13 which is suitable for the circuit breaker 3, the power taking plate 13 is in contact with the busbar 34, and when a wiring screw of the circuit breaker 3 is screwed, the power taking plate 13 is reliably connected with the wiring board of the circuit breaker 3.
When the busbar 34 is not disposed in the circuit breaker 3, the structure of the electricity taking plate 13 is as shown in fig. 11, the whole electricity taking plate 13 is in a zigzag plate structure, one end of the electricity taking plate 13 is welded with the first circuit board 12, the other end of the electricity taking plate 13 penetrates out of the first fixing piece and then bends along a direction parallel to the side wall of the circuit breaker 3, and the tail end of the electricity taking plate is bent again to extend to the circuit breaker 3 for connection with a connecting terminal of the circuit breaker 3.
The second mounting groove 172 is located below the first mounting groove 171, threading holes and separation protrusions 173 are arranged in the second mounting groove 172, the number of the threading holes is the same as the number of poles of the circuit breaker 3, the threading holes correspond to the wiring holes 33 on the circuit breaker 3, the threading holes are used for enabling wires 35 (see fig. 5) of all poles of the circuit breaker 3 to pass through, the number of the separation protrusions 173 is at least one, the separation protrusions 173 separate the second mounting groove 172 into at least two second sub mounting grooves 174, and one threading hole is correspondingly arranged in each second sub mounting groove 174. Preferably, the second mounting grooves 172 are capsule-shaped as shown in fig. 13, and the side walls of the separation protrusions 173 are arc-shaped concave surfaces, so that each second sub mounting groove 174 is circular, so that the second mounting groove 172 can be used for mounting the zero sequence transformer 15 or the current transformer 14, and the first fixing member can be universal. The zero sequence transformers 15 are correspondingly arranged in a capsule shape, so that the zero sequence transformers 15 are attached to the inner side wall of the second mounting groove 172 and are mounted, the separation protrusion 173 can correspondingly penetrate through the middle of the zero sequence transformers 15, at least two current transformers 14 are arranged in the first fixing piece, each current transformer 14 is correspondingly assembled in one second sub mounting groove 174, and two adjacent current transformers 14 are separated through the separation protrusion 173.
Further, the first fixing part is further provided with a first fixing part, the first fixing part is used for being matched with the control module 2 and the shell 31 of the circuit breaker 3, the sampling module 1 is assembled at two ends of the control module 2 and the circuit breaker 3 (the control module 2 can be regarded as one control pole of the circuit breaker 3 after being assembled on the circuit breaker 3), as shown in fig. 9-15, the first fixing part is a buckle 18 arranged at the edge of the housing 111, correspondingly, a clamping groove 311 structure matched with the buckle 18 is arranged on the control module 2 and the shell 31 of the circuit breaker 3, and the first fixing part is not limited to the buckle structure.
The control module 2 comprises a control unit and a functional unit, a second circuit board 22 is arranged in the control module 2, the control unit is arranged on the second circuit board 22, the functional unit acts under the drive of the control unit, and the functional unit comprises an automatic opening and closing unit and/or an alarm indicating unit and/or a tripper unit.
As shown in fig. 5-9 and fig. 21-25, the control module 2 includes a second fixing member, in which a control unit and a functional unit are assembled, the second fixing member assembles the control module 2 at one side of the circuit breaker 3, the second fixing member includes a base 211 and an upper cover 212, and the shape of the second fixing member is similar to that of the casing of the circuit breaker. Preferably, the base 211 is provided with an assembling structure matched with the shell 31 of the circuit breaker 3, in the application, the base 211 is preferably provided with a hook 2111, the shell 31 of the circuit breaker 3 is provided with a groove 312 matched with the hook 2111, the base 211 is provided with a linkage hole for realizing linkage connection with the operating mechanism 32 of the circuit breaker 3, and in addition, the second fixing piece is provided with a connecting hole, and the signal transmission unit is connected with the control module 2 and the sampling module 1 through the connecting hole.
An embodiment of a control module 2 is provided in conjunction with fig. 5, 9 and 21, and an embodiment of a control module 2 is provided, where the automatic opening and closing control module includes a control unit, a functional unit and a communication unit, and the functional unit includes an automatic opening and closing unit. The automatic opening and closing control module can upload collected temperature, current and voltage signals to an upper computer through a communication unit, judge whether overcurrent exists according to the current signals collected by the current transformer 14 to realize overcurrent protection, judge based on the collected voltage signals, and form an accessory module for realizing undervoltage/overvoltage protection. A second circuit board 22 and a functional unit are arranged in the second fixing member, a controller for driving a control unit of the functional unit is arranged on the second circuit board 22, in this embodiment, the functional unit comprises an automatic switching-on/off unit, and the automatic switching-on/off unit comprises a control handle 23 arranged on the second fixing member, a transmission mechanism 24 and a tripping structure arranged in the middle of the second fixing member. The control handle 23 is connected with the handle of the circuit breaker 3 in a linkage way, the tripping structure is linked with the operating mechanism of the circuit breaker 3, the controller can control the transmission mechanism 24 to drive the control handle 23 to drive the handle of the circuit breaker 3 to realize the switching-on operation of the circuit breaker, and the transmission mechanism 24 is controlled to drive the tripping structure to trigger the operating mechanism of the circuit breaker 3 to trip to realize the switching-off operation of the circuit breaker. The second circuit board 22 is provided with a controller, preferably the controller is a microcontroller, in the application, the microcontroller arranged on the second circuit board 22 is a second microprocessor MCU2, the second microprocessor MCU2 can control the transmission mechanism 24 to perform switching-on/off rotation, the sampling module 1 transmits the collected signals or the collected and processed signals to the second microprocessor MCU2 of the second circuit board 22, and the second microprocessor MCU2 processes and judges the received signals and then drives the transmission mechanism 24 to act to realize automatic switching-on/off of the circuit breaker 3.
The transmission mechanism 24 comprises a motor system, a gear set in transmission connection with the motor system and a driving assembly matched with the gear set, wherein the motor system is driven by the second microprocessor MCU2 to rotate forward or backward, so that the gear set is driven to perform opening or closing rotation and is matched with the driving assembly. When the motor system performs switching-on rotation, the gear set is driven to rotate in a switching-on direction, the gear set enables the driving assembly to act and drives the control handle 23 to rotate in the switching-on direction, the handle of the circuit breaker 3 also rotates in the switching-on direction under the action of the control handle 23 and drives the operating mechanism 32 of the circuit breaker 3 and the contact mechanism connected to the operating mechanism 32 to switch on, when the motor system performs switching-off rotation, the gear set is driven to rotate in the switching-off direction, the gear set enables the driving assembly to act to drive the tripping structure, and the tripping structure triggers the operating mechanism 32 of the circuit breaker 3 to act to trip, so that the circuit breaker 3 is switched off.
As shown in fig. 21, the motor system includes a motor and a worm, the worm is connected between the motor and the gear set, the gear set includes a plurality of gears meshed with each other, the driving assembly includes a driving rod 242, the driving rod 242 is assembled on one gear of the gear set, the driving rod 242 may be matched with the control handle 23, preferably, a boss structure matched with the driving rod 242 is disposed on the control handle 23, when the gear set performs closing rotation, the driving rod 242 is in limit fit with the control handle 23 to drive the control handle 23 to rotate in the closing direction, preferably, a track groove is disposed near the second fixing member near the control handle 23, and the track groove is used for limiting the movement track of the driving rod 242.
The trip structure and the driving rod 242 are respectively located on the front side and the back side of the gear set, wherein the trip structure is located on the back side of the gear set, namely, one side close to the circuit breaker 3, the driving assembly matched with the trip structure comprises a pushing part (not shown), the pushing part is arranged on the back side of one gear in the gear set in a protruding mode, the trip structure comprises a pushing rod 241 and a linkage shaft 253, the pushing rod 241 is rotationally assembled in the control module 2, and the linkage shaft 253 penetrates out of the second fixing piece to be linked with the operating mechanism 32 of the circuit breaker 3. Specifically, the linkage shaft 253 is linked with the lock catch 321 of the operating mechanism 32, the pushing part is preferably a boss structure arranged on a gear, when the gear set rotates for opening the switch, the pushing part makes the pushing rod 241 rotate and then pushes the linkage rod, and the lock catch 321 rotates under the action of the linkage rod so as to enable the operating mechanism 32 to act, and the breaker 3 opens the switch. The structure of the push rod 241 cooperating with the operating mechanism 32 of the circuit breaker 3 can refer to fig. 22, wherein the operating mechanism 32 is located in the casing of the circuit breaker 3, the push rod 241 is rotatably assembled in the control module 2, and the linkage shaft 253 penetrates out of the second fixing piece to be linked with the operating mechanism 32 of the circuit breaker 3.
As shown in fig. 22-25, an embodiment of a control module 2 is provided, and the trip control module includes a control unit and a functional unit, where the functional unit includes a trip unit, and the trip unit includes a trip 251, and the controller is capable of controlling the trip 251 to trigger an operation mechanism of the circuit breaker 3 to trip according to a signal from the sampling module 1. The tripping control module and the current sampling module provided with the current transformer 14 can form an accessory module for realizing overcurrent protection, the leakage sampling module provided with the zero sequence transformer 15 can form an accessory module for realizing leakage protection, and the accessory module for realizing undervoltage/overvoltage protection can be formed by judging based on the voltage signals collected by the sampling module. The trip mechanism 25 includes a trip 251 driven by the second microprocessor MCU2 of the second circuit board 22, the trip 251 is an electromagnetic trip, one end of a push rod 252 of the trip 251 pushes the linkage shaft 253, preferably, the push rod 252 triggers the push rod 241 in the driving assembly to make the linkage shaft 253 drive the operating mechanism 32 to act. When the second microprocessor MCU2 receives the signal transmitted by the sampling module 1, after the second microprocessor MCU2 determines that the main circuit of the circuit breaker 3 has an overcurrent and the overcurrent reaches a threshold preset by the second microprocessor MCU2, the second microprocessor MCU2 drives the release 251 to act, the ejector rod 252 of the release 251 acts to push the linkage shaft 253 to act so as to open the circuit breaker 3, and when the second microprocessor MCU2 receives the signal transmitted by the sampling module 1, it determines that the circuit breaker 3 has an overvoltage/undervoltage fault, an arc fault and an electric leakage fault, the release 251 can be driven to act so as to open the circuit breaker 3.
As shown in fig. 25, a further embodiment of the control module 2 is provided, the functional unit comprising a trip mechanism 25, a test button 26 being further provided at the control module 2, and a test circuit operable by the test button 26 for generating a simulated leakage current for detecting an operational characteristic of the circuit breaker 3. The test button 26 is mounted on the second fixing member, and the test circuit is connected to the main circuit of the circuit breaker 3 through the second circuit board 22, preferably, the on-off of the test circuit is controlled by a micro switch 222 arranged on the second circuit board 22, and the micro switch 222 can be triggered by the test button 26.
The accessory module is assembled on the existing circuit breaker, so that the circuit breaker with single function can be transformed into a circuit breaker with multiple functions, various running state information of a main circuit of the circuit breaker can be collected by the transformed circuit breaker, and automatic opening and closing and/or warning can be realized under the action of the functional unit according to the running state information.
Referring to fig. 7-8 and fig. 23-25, another embodiment of a control module 2 is described, where the functional units in the control module 2 include a trip mechanism 25, and further include an alarm indication unit, where the alarm indication unit is used to indicate the operation condition of each pole main line of the circuit breaker 3, the alarm indication unit is disposed on the second circuit board 22, and the alarm indication unit is controlled by the second microprocessor MCU2 on the second circuit board 22, and after the signal is transmitted to the control module 2 by the sampling module 1, the control module 2 triggers the alarm indication unit to issue an alarm after determining that the main line has a fault after processing and determining.
Specifically, the first microprocessor MCU1 of the sampling module 1 obtains signals such as voltage, current or temperature through a sampling circuit, the sampling circuit includes an electronic element for collecting signals of a main circuit of the circuit breaker 3, the signal unit judges the fault type and the fault position of the circuit breaker 3 according to the signals collected by the sampling circuit, the fault position is the fault position of which pole of the circuit breaker 3, the first microprocessor MCU1 forms a fault code according to a preset rule and sends the fault code to the second microprocessor MCU2 of the control module 2 through the signal transmission unit, and the second microprocessor MCU2 translates the fault code according to the preset rule and triggers the alarm indication unit to send an alarm. For example, a two-digit code is used, the first digit "1-8" represents the fault position, namely the four-phase wiring terminal (wire inlet terminal and wire outlet terminal) of the circuit breaker 3, the second digit "1-6" represents the fault type, when the first microprocessor MCU1 judges that the temperature of the B-phase wire inlet terminal is too high, the fault code "24" is sent out, and after the second microprocessor MCU2 receives the fault code, the corresponding fault information is translated, and then the alarm indication unit is driven to send out an alarm. Of course, other types of coding rules are equally applicable.
In this embodiment, the alarm indication unit includes one or more of a status indication mechanism, an audible alarm device, and a temperature indication mechanism.
An embodiment of an alarm indication unit in a first control module 2 is provided in connection with fig. 7 and 23, where the alarm indication unit includes a status indication mechanism, where the status indication mechanism includes a first light emitting element 223 and a first light guiding column 224, preferably, the first light emitting element 223 is a light emitting diode, where the first light guiding column 224 corresponds to the first light emitting element 223, and a portion of the first light guiding column 224 is exposed on a surface of the control module 2, specifically on a surface of a second fixing piece, and is used to display a status of the first light emitting element 223, so as to facilitate observation of the status of the first light emitting element 223, where the first light emitting element 223 can indicate different status of the circuit breaker 3 under the control of the second microprocessor MCU2, preferably, the first light emitting element 223 indicates an operating status of the circuit breaker 3 by displaying a color or a lighting frequency, for example, when the circuit breaker 3 is in a normal operating status, the first light emitting element 223 is green, the circuit breaker 3 trips due to an overcurrent, the first light emitting element 223 is red, when the circuit breaker 3 is in an overvoltage/undervoltage, etc.
In combination with fig. 24, an embodiment of a warning indication unit in the second control module 2 is provided, the sound warning device includes a buzzer 228 and a warning device, when the circuit breaker 3 has over-current, over/under voltage and electric leakage faults, the second microprocessor MCU2 triggers the buzzer 228 to send out a warning to remind the circuit breaker 3 of faults, similarly, the number of the buzzers 228 can be set to be a plurality, so that each pole of the circuit breaker 3 corresponds to one buzzer 228, and when the circuit breaker 3 has arc faults, the second microprocessor MCU2 starts the warning device, and the warning device detects whether fire hazards exist. Preferably, the first embodiment and the second embodiment of the alarm indication unit in the control module 2 are combined, at this time, the sound alarm device can be provided with only one buzzer 229, and the fault position is indicated by a plurality of first light emitting elements 223 in the state indication mechanism, so that the warning is provided from the aspects of sound and light, the efficiency is improved, and the staff can find the fault timely.
In connection with fig. 7 and 24, an embodiment of an alarm indication unit in a third control module 2 is provided, the alarm indication unit further includes a temperature indication mechanism, the temperature indication mechanism includes a third circuit board 227, a second light emitting element 225 and a second light guiding column 226, the third circuit board 227 is connected to the second circuit board 22, the second light emitting element 225 is disposed on the third circuit board 227 and is used for indicating that the temperature rise or the temperature of the connection terminal of the circuit breaker 3 is higher, preferably, a plurality of second light emitting elements 225 and second light guiding columns 226 are respectively disposed, and the second light emitting elements 225 and the second light guiding columns 226 are correspondingly disposed, each second light emitting element 225 correspondingly displays that the temperature rise or the temperature of each connection terminal of the circuit breaker 3 is higher, and the second light guiding columns 226 are partially exposed on the surface of the control module 2, particularly on the surface of the second fixing member, so as to display the state of the second light emitting element 225. The alarm indication unit of this embodiment may be used alone or in combination with any one or both of the first embodiment and the second embodiment of the alarm indication unit.
Further, when the present application is applied to the multipole circuit breaker 3, the alarm indication unit further includes a fault display screen 229 (see fig. 8), and the fault display screen 229 is used in cooperation with one or more of the status indication mechanism and the temperature indication mechanism in the control module 2, and may also replace the light emitting element and the light guide column in the status indication mechanism and the temperature indication mechanism to directly display the fault type and the position.
As shown in fig. 8, the fault display screen 229 is disposed on the surface of the second fixing member of the control module 2, the fault display screen 229 is connected with the second circuit board 22 and controlled by the second microprocessor MCU2, when the control module 2 obtains the type and position of the fault of the circuit breaker 3 through the sampling module 1, the second microprocessor MCU2 controls the fault display screen 229 to correspondingly display the type and position of the fault, preferably, the fault display screen 229 is a digital tube or a liquid crystal display panel. The fault display screen 229 can also be applied to the circuit breaker 3 with only two phase poles, but is particularly suitable for assembling the multipole circuit breaker 3, so that the control module 2 can accurately display the fault type and position, and the fault of the circuit breaker 3 can be found and processed in time.
In addition, the number of the control modules 2 of the present application may be plural, and only one functional unit may be provided in each control module 2, for example, an automatic opening/closing unit may be provided in one control module 2 and an alarm indication unit may be provided in another control module 2, or a state indication mechanism, an acoustic alarm device, and a temperature indication mechanism in the alarm indication unit may be provided in a plurality of control modules 2 in a scattered manner.
Preferably, the control module 2 further includes a communication unit, where the communication unit is used to make the control module 2 be connected with the receiving device in a communication manner, and the communication device includes another breaker 3 assembled with the control module 2, an external client, a user APP, a cloud platform, and devices, etc., and in addition, when the control module 2 assembled with the same breaker 3 has a plurality of control modules 2, the plurality of control modules 2 are also provided with communication units, so that the communication connection can be implemented as well.
Preferably, a signal transmission unit for realizing signal exchange is arranged between the sampling module 1 and the control module 2, the signal transmission unit comprises a socket 221 arranged on the second circuit board 22 and a plug 121 arranged on the first circuit board 12, and the plug 121 is matched with the socket 221 to realize signal transmission between the signal unit arranged on the first circuit board 12 and the controller arranged on the second circuit board 22.
When the first circuit board 12 of the sampling module 1 needs to be connected with a plurality of control modules 2, a plurality of plugs 121 are correspondingly arranged on the first circuit board 12, and each plug 121 is correspondingly connected with the second circuit board 22 of a different control module 2.
Preferably, an intermediate circuit board 19 is disposed between the first circuit board 12 and the second circuit board 22, and as shown in fig. 17-20, the intermediate circuit board 19 is preferably disposed in the first fixing member together with the first circuit board 12, and the corresponding first fixing member may also include an expansion housing for expansion to cover the intermediate circuit board 19. The first circuit board 12 is provided with an extension plug 122 connected with the intermediate circuit board 19, and the intermediate circuit board 19 is provided with an intermediate plug 191 and an intermediate socket 192, wherein the intermediate socket 192 is matched with the extension plug 122 of the first circuit board 12, and the intermediate plug 191 is matched with the socket 221 of the second circuit board 22. As shown in fig. 17-19, an intermediate socket 192 is provided on one side of the intermediate circuit board 19, the intermediate socket 192 is matched with a plug 121 on the second circuit board 22, an intermediate plug 191 is provided on the other side of the intermediate circuit board 19, in fig. 18-19, the intermediate circuit board 19 further includes a second extension plug 193 for matching with another intermediate circuit board 19, the intermediate plug 191 is connected with a socket 221 on the second circuit board 22 in the control module 2, the second extension plug 193 is used for connecting with the next intermediate circuit board 19, the structure is suitable for connecting a plurality of intermediate circuit boards 19 to be respectively connected with a plurality of control modules 2, the plurality of control modules 2 can be connected with the intermediate circuit board 19 on the last control module 2 for signal transmission through the plurality of intermediate circuit boards 19, as shown in fig. 20, one intermediate socket 192 is provided on one side of the intermediate circuit board 19, and one intermediate plug 191 is provided on the other side of the intermediate circuit board 19, and the second extension plug 193 is not provided.
The utility model provides a circuit breaker 3, includes casing 31 be equipped with two at least looks utmost point in the casing 31, every looks utmost point is including setting up the binding post at both ends, and one of them binding post is as incoming line terminal, and another binding post is as outgoing line terminal be equipped with handle, operating device 32 and contact mechanism between the binding post, handle and operating device 32 linkage, the handle and the operating device 32 linkage of adjacent looks utmost point are connected, and the contact mechanism in every utmost point carries out the divide-shut brake under the drive of operating device 32. The automatic switching-on/off unit is characterized in that sampling modules 1 are spliced at two ends of a shell 31, the sampling modules 1 are connected with wiring terminals of each phase pole, a control module 2 is spliced at one side of the shell 31, a functional unit is arranged in the control module 2, an automatic switching-on/off unit in the functional unit is connected with a circuit breaker 3 in a linkage manner, the automatic switching-on/off unit comprises a control handle 23, a transmission mechanism 24 and a tripping mechanism 25, the control handle 23 is connected with the handle in a linkage manner, and the transmission mechanism 24 and the tripping mechanism 25 are respectively connected with an operating mechanism 32 of the circuit breaker 3 in a linkage manner.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.
Claims (24)
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| CN202011481832.1A CN114637229B (en) | 2020-12-16 | 2020-12-16 | A circuit breaker and its accessory module |
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| CN204179640U (en) * | 2014-11-28 | 2015-02-25 | 中国建筑一局(集团)有限公司 | Detachable leakage protection device suitable for safe power utilization of large-scale electric equipment |
| CN106548907A (en) * | 2016-12-07 | 2017-03-29 | 上海磊跃自动化设备有限公司 | Thermomagetic circuit-breaker with real-time detection function |
| CN208092206U (en) * | 2018-05-11 | 2018-11-13 | 常熟开关制造有限公司(原常熟开关厂） | Circuit-breaker status detection device and breaker |
| CN110021503A (en) * | 2019-01-04 | 2019-07-16 | 兰溪市雁洲智能科技有限公司 | A kind of Internet of Things intelligent switch remotely controlled |
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| CN214311360U (en) * | 2020-12-16 | 2021-09-28 | 浙江正泰电器股份有限公司 | Circuit breaker and accessory module thereof |
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