CN203398043U - Low-voltage breaker with connecting terminal block temperature rise monitoring device - Google Patents
Low-voltage breaker with connecting terminal block temperature rise monitoring device Download PDFInfo
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- CN203398043U CN203398043U CN201320339431.1U CN201320339431U CN203398043U CN 203398043 U CN203398043 U CN 203398043U CN 201320339431 U CN201320339431 U CN 201320339431U CN 203398043 U CN203398043 U CN 203398043U
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Abstract
Provided is a low-voltage breaker with a connecting terminal block temperature rise monitoring device. The temperature rise monitoring device comprises a temperature sensor which is composed of multiple NTC temperature-sensitive resistors. Each temperature sensing terminal is fixedly connected with each terminal of a terminal block respectively via a heat conduction connecting mechanism. Each resistor is provided with a path of electrical connecting terminal which outputs a temperature change analog signal. Each electrical connecting terminal is electrically connected with a corresponding path of input terminal of a multichannel electronic analog switch one by one. The multichannel electronic analog switch switches each path of input terminal in a circulation way to be connected with an output terminal. An A/D conversion circuit provides the converted digital signal to a first signal input terminal of a microcontroller. An encoding switch used for setting temperature provides a temperature threshold digital signal to a second signal input terminal of the microcontroller. According to a comparison result of the two signals, the microcontroller respectively outputs an order signal, an alarm or a switch control signal which stimulates the breaker body to be tripped out to a control signal output module; and outputs an indicating signal to a working state indicating module so that temperature rise change information of the connecting terminal block is displayed.
Description
Technical field
The utility model relates to a kind of low-voltage circuit breaker, more specifically to the low-voltage circuit breaker with connecting terminal block temperature rise monitoring device.
Background technology
The running status of a large amount of low-voltage circuit breakers that use has great impact to the reliability of electric power system, binding post is to bear the important spare part that circuit breaker is connected with supply line, the at present connection of common electric switch equipment mostly is screw fastening, and the contact of low-voltage circuit breaker, cable joint, binding post and the busbar (being called for short " connecting terminal block ") being attached thereto thereof produce that temperature rise is higher, local overheating is commonplace phenomenon.According to statistics, in the switch fault of China's distribution voltage grade, temperature rise fault occupies front three in recent years.Its immediate cause is that contact resistance or circuit breaker self contact resistance between binding post and conductor raises, such as making for a long time service time terminal junction dust deposition, air pollution, electrical wear cause terminal junction and wire contact surface is deteriorated and the generation mechanical oscillation such as circuit breaker overload operation are become flexible terminal, also have that the binding post of generation not in place is installed is loosening due to workmen, all can cause the overheated of connecting terminal block.Abnormal overheated long-term existence has multiple harm, may impel the binding post junction metal accelerated ageing of circuit breaker, mechanical strength declines, also may conduct circuit breaker miscellaneous part is affected by heat, cause the mechanical connection hidden danger of equipment, ageing of insulation, even causes low voltage power distribution network generation electrical fire accident.While applying at the scene at present owing to often finding to exist screw the situation such as not tighten, become flexible, attendant need be regularly to on-the-spot by dripping the try to find out temperaturing lifting abnormality phenomenon of connecting terminal block of the inspection method of the routines such as wax, and these conventional inspection method special charges manpower and man-hours, and directly perceived not, overheated standard is difficult to quantified controlling, adopt to drip temperaturing lifting abnormality that the conventional approach such as wax detect connecting terminal block with certain safety operation risk simultaneously.For this reason; people wish that low-voltage circuit breaker is also equipped with the device of the temperature rise of its connecting terminal block being implemented to automatic monitoring; its concrete function comprises: the temperature rise that detects in real time breaker connecting terminal row changes; using temperature rise variable signal export on the spot or long-range as controlling, alarm signal, when temperature rise surpasses the threshold value alarm of setting or triggers the breaker protection tripping operation of threading off.Temperature rise variable signal can be exchanged into digital signal, can be compatible with digitized management, and by the communication with central control room main frame, temperature rise monitoring device is also selectively set up long-range shunted exciter tripping input interface, the long-range shunted exciter tripping function of expansion circuit breaker.
Publication number is that the Chinese invention patent of CN102543595A discloses a kind of circuit breaker, general temperature detect switch (TDS) device is housed on its binding post, warning device is housed on housing, when the temperature on binding post reaches the thresholding of default early warning temperature and fusing-off temperature, temperature detect switch (TDS) is connected warning device also makes warning device send alarm signal.The control way of output of this temperature detect switch (TDS) can not be compatible with the existing trip gear of circuit breaker, if realize, directly controls circuit breaker tripping, must increase its special-purpose trip gear, thereby cause the complicated of circuit breaker structure.And whether the prior art can only reach thresholding by indicated temperature, and can not indicate the dynamic change of temperature rise, therefore can not realize real-time, the detection of dynamic of temperature rise.Have, its output signal can not access the main frame as central control room again, and it controls output signal can not be for digitized intelligent management and control system.
Utility model content
The purpose of this utility model is to provide a kind of low-voltage circuit breaker with connecting terminal block temperature rise monitoring device, adopt microcontroller (MCU) to detect and gather breaker connecting terminal row temperature rise by temperature sensor, by field bus communication remote transmission to central control room monitoring host computer, make the monitoring of breaker connecting terminal row temperature rise directly perceived, safety, reliable, save trouble and labor, solved the difficulty of attendant's site inspection.
To achieve these goals, the low-voltage circuit breaker with connecting terminal block temperature rise monitoring device of the present utility model has adopted following technical scheme.
A kind of low-voltage circuit breaker with connecting terminal block temperature rise monitoring device, comprise connecting terminal block 100 and tripping actuating device 200, described low-voltage circuit breaker also comprises temperature rise monitoring device 300 and for whole temperature rise monitoring device 300 provides the Switching Power Supply supply module 6 of power adapter, it is electrically connected to the power input of the microcontroller 5 of temperature rise monitoring device 300.Described temperature rise monitoring device 300 comprises the temperature sensor 1 consisting of a plurality of NTC themistor, the temperature-sensitive end of each NTC themistor conducts on the binding post that bindiny mechanism 10 is fixedly connected on described connecting terminal block 100 by heat respectively, for gather the variations in temperature on the binding post of connecting terminal block 100 of institute's correspondence connection in contact induction mode, each NTC themistor has a road for the electric connecting terminal of output temperature change modeling signal, and each described electric connecting terminal is electrically connected to the corresponding road input of multi-channel electronic analog switch 2 one by one, multi-channel electronic analog switch 2 Jiang Ge road input cyclic switchings are connected to an output, and by this analog signal output to A/D change-over circuit 3, A/D change-over circuit 3 is converted to this variations in temperature analog signal the first signal input of exporting to microcontroller 5 after digital signal, temperature arranges the secondary signal input of exporting to microcontroller 5 with code switch 4 after by manual operation occurrence temperature threshold number signal, microcontroller 5 is according to the comparative result of the temperature threshold digital signal of the variations in temperature digital signal of first signal input and secondary signal input, respectively to control signal output module 7 output instruction signals, to operating state indicating module 8 output index signals, the control signal input of control signal output module 7 is electrically connected to the command signal output of microcontroller 5, the switch controlling signal that the control signal output of control signal output module 7 is electrically connected to tripping actuating device 200 and threads off to its output alarm or excitation breaker body, the display input of operating state indicating module 8 is electrically connected to the index signal output of microcontroller 5, and according to the change information of self operating state of the temperature rising state of the indication signal connecting terminal block 100 of microcontroller 5 output and temperature rise monitoring device 300.
Preferably, described circuit breaker is realized the telecommunication with central control room main frame 400 by fieldbus, described temperature rise monitoring device 300 also comprises serial communication interface 9, the terminals of serial communication interface 9 are electrically connected to the communication ends of microcontroller 5, the interface end choosing of serial communication interface 9 connects described central control room main frame 400, and with serial mode and central control room main frame 400 communication interaction datas.
Preferably, described heat conduction bindiny mechanism 10 comprises the insulation sheet material of good heat conduction and the terminal screw on connecting terminal block 100, the temperature-sensitive end of described NTC themistor is washer type, temperature-sensitive element is placed in packing ring wire lead slot, and isolated and parcel by the insulation sheet material of good heat conduction, described terminal screw is fastenedly connected the temperature-sensitive end packing ring of described NTC themistor on the connecting terminal block 100 of circuit breaker.
Preferably, described control signal output module 7 also comprises controls output interface 70, the control signal output of it and control signal output module 7 is connected in parallel, and to the control signal of the external control actuator 500 output control signal output modules 7 of circuit breaker.
Preferably, described control signal output module 7 also comprises controls output interface 70, and it is connected in parallel with the control signal input of control signal output module 7, and the command signal of exporting from microcontroller 5 to the external control actuator 500 of circuit breaker.
Preferably, the tripping actuating device 200 of described circuit breaker comprises alarm 20 and/or release 21 and/or inner shunt opening device 22.
Preferably, described multi-channel electronic analog switch 2 is 8 passage multi-channel electronic analog switches.
Further, described serial communication interface 9 is RS485 communication interface.Or described serial communication interface 9 comprises the change-over circuit between RS485 communication interface, RS232 communication interface and RS485 communication interface and RS232 communication interface.Or described serial communication interface 9 comprises the change-over circuit between RS485 communication interface, switching signal interface and RS485 communication interface and switching signal interface.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the low-voltage circuit breaker embodiment with connecting terminal block temperature rise monitoring device of the present utility model.
Embodiment
Below in conjunction with accompanying drawing 1, describe the execution mode of the low-voltage circuit breaker with connecting terminal block temperature rise monitoring device of the present utility model in detail.Low-voltage circuit breaker with connecting terminal block temperature rise monitoring device of the present utility model is not limited to the description of following examples.
Referring to Fig. 1, low-voltage circuit breaker with connecting terminal block temperature rise monitoring device of the present utility model comprises connecting terminal block 100, tripping actuating device 200, temperature rise monitoring device 300 and for whole temperature rise monitoring device 300 provides the Switching Power Supply supply module 6 of power adapter, it is electrically connected to the power input of the microcontroller 5 of temperature rise monitoring device 300.Temperature rise monitoring device 300 comprises the temperature sensor 1 consisting of a plurality of NTC themistor, the temperature-sensitive end of each NTC themistor conducts on the binding post that bindiny mechanism 10 is fixedly connected on described connecting terminal block 100 by heat respectively, for gather the variations in temperature on the binding post of connecting terminal block 100 of institute's correspondence connection in contact induction mode, each NTC themistor has a road for the electric connecting terminal of output temperature change modeling signal, and each described electric connecting terminal is electrically connected to the corresponding road input of multi-channel electronic analog switch 2 one by one, multi-channel electronic analog switch 2 Jiang Ge road input cyclic switchings are connected to an output, and by this analog signal output to A/D change-over circuit 3, A/D change-over circuit 3 is converted to this variations in temperature analog signal the first signal input of exporting to microcontroller 5 after digital signal.Temperature arranges the secondary signal input of exporting to microcontroller 5 with code switch 4 after by manual operation occurrence temperature threshold number signal; Microcontroller 5 is according to the comparative result of the temperature threshold digital signal of the variations in temperature digital signal of first signal input and secondary signal input, respectively to control signal output module 7 output instruction signals, to operating state indicating module 8 output index signals; The control signal input of control signal output module 7 is electrically connected to the command signal output of microcontroller 5, the switch controlling signal that the control signal output of control signal output module 7 is electrically connected to tripping actuating device 200 and threads off to its output alarm or excitation breaker body; The display input of operating state indicating module 8 is electrically connected to the index signal output of microcontroller 5, and according to the change information of self operating state of the temperature rising state of the indication signal connecting terminal block 100 of microcontroller 5 output and temperature rise monitoring device 300.As can be seen here; directly perceived, the safety of the actual temperature that the temperature rise monitoring device of circuit breaker of the present utility model by basic configuration can not only achieve a butt joint on line terminals and busbar, precise monitoring; and can also realize the monitoring to temperature rise monitoring device self operating state, realize the digitlization indication of variations in temperature, the automatic control of the circuit breaker inside such as threshold value, temperature rise dropout and temperature rise warning of default temperature rise protection simultaneously.By heat, conduct bindiny mechanism, make to form being fixedly connected with of compression fit between NTC themistor and connecting terminal block 100, sensitive in contact induction mode, accurately gather the variations in temperature on binding post and bus.By selecting suitable MCU microcontroller, make control inputs and the signal type of controlling output expand to switching signal and digital signal, thereby can greatly improve the use function of circuit breaker.
Tripping actuating device 200 in Fig. 1 is the devices that all have in low-voltage circuit breaker, can be arranged on circuit breaker inner or plug-in, the conventional release that has electromagnetism or electronics 21, inner shunt opening device 22 and alarm 20, alarm 20 comprises the loud speaker, indicator light of indication trip status or failure condition etc.The binding post (not shown) of circuit breaker and being connected between the bus (not shown) on binding post is fixedly connected by terminal screw (not shown), and is fixedly connected and is realized being electrically connected between binding post and bus by this.As can be seen here, temperature rise reason on connecting terminal block 100 mainly contains San Ge aspect, wherein by binding post, to be conducted the temperature rise of the circuit breaker of coming itself on the one hand, the temperature rise of being come by bus conduction on the other hand, on the one hand to cause being electrically connected to bad by the dust loosening, the place of electrical connection because of terminal screw between binding post and bus again, therefore, the temperature rise variation on direct Real-Time Monitoring connecting terminal block 100 has very important practical value.The temperature rise variation of the utility model from Real-Time Monitoring connecting terminal block 100, use MCU control technology to adopt the new solution of temperature rise monitoring device 300, can not only meet the needs of the various control functions of low-voltage circuit breaker, and the various control system in circuit breaker can be combined again, can also greatly improve the fine degree of automation, intellectuality, networking control simultaneously.Temperature rise monitoring device 300 is divided into basic model and extended pattern.The temperature rise monitoring device 300 of basic model comprises that the temperature sensor 1, multi-channel electronic analog switch 2, A/D change-over circuit 3, the temperature that some NTC themistor, consist of arrange with code switch 4, microcontroller 5, Switching Power Supply supply module 6, control signal output module 7 and operating state indicating module 8, and the temperature rise monitoring device 300 of extended pattern is divided by beyond upper module, also comprise serial communication interface 9, the difference that is extended pattern and basic model is only, extended pattern has increased serial communication interface 9 than basic model.The scheme that the attemperating unit of existing electrical equipment adopts regional temperature to detect, as adopt infrared temperature Acquisition Circuit to realize temperature monitoring and indication, ubiquitous problem is the precise monitoring of the actual temperature on line terminals and busbar of can not achieving a butt joint, indication, specifically, owing to there being a plurality of pyrotoxins in region, Nei Ge region, regional temperature Shi You region forms, in this case, although the regional temperature that attemperating unit monitors is relevant with the temperature on binding post and busbar, but be exactly not necessarily the actual temperature on binding post and busbar, for example, the situation of two circuit breakers is housed on same busbar, existing attemperating unit can only be identified their temperature rise that exists, and None-identified temperature rise is from the binding post of circuit breaker 1, the binding post of circuit breaker 2 or which in busbar, so, existing attemperating unit cannot utilize the concrete position of the technology identification heating of intelligent system.And adopt the temperature rise monitoring device of extended pattern of the present utility model, by fieldbus, can realize remote transmission and the communication control with central control room main frame 400, and temperature rise monitoring device 300 can also comprise serial communication interface 9, the terminals of serial communication interface 9 are electrically connected to the communication ends of microcontroller 5, the interface end choosing of serial communication interface 9 connects described central control room main frame 400, and with serial mode and central control room main frame 400 communication interaction datas.The main frame 400 of central control room is very easy to identify goes out temperature rise from which, if for example only have a heating in the binding post of the binding post of circuit breaker 1 and circuit breaker 2, illustrates that heating position is likely that circuit breaker of heating; If the binding post of the binding post of circuit breaker 1 and circuit breaker 2 all generates heat, illustrate that heating position is likely busbar.The object that attemperating unit has increased serial communication interface 9 is selectively, make full use of the MCU microcontroller 5 of temperature rise monitoring device 300, significantly expand the control function of circuit breaker, make MCU microcontroller 5 become the core that realizes various control functions, various control system in circuit breaker are combined, can realize again the data interaction between the central control room main frame 400 (communication control unit that comprises PC) of MCU microcontroller 5 and circuit breaker outside simultaneously, for circuit breaker can adapt to automation, digitlization, information-based, networking, intelligentized control, management, operational system, terminal extension communication interaction function.
The embodiment providing below in conjunction with accompanying drawing 1 further illustrates the embodiment of the basic model of temperature rise monitoring device 300.The temperature rise monitoring device 300 of basic model comprises that the temperature sensor 1, multi-channel electronic analog switch 2, A/D change-over circuit 3, the temperature that some NTC thermistor temperature devices, consist of arrange with code switch 4, MCU microcontroller 5, Switching Power Supply supply module 6, control signal output module 7 and operating state indicating module 8.The temperature-sensitive end of each NTC themistor conducts bindiny mechanism 10 by heat respectively and is fixedly connected on the corresponding binding post in connecting terminal block 100, and in contact induction mode, gather the variations in temperature on the connecting terminal block 100 being contacted, because the temperature on connecting terminal block 100 is mainly conducted to temperature sensor 1 by contact relation, obviously, this contact induction mode has advantages of conduction of velocity having a narrow range of temperature soon and between transducer 1 and connecting terminal block 100, to guarantee the accurate and sensitive of temperature sensor 1 temperature sensor.Certainly, in this so-called contact, comprise direct contact and indirect contact, between the temperature-sensitive end that directly contact refers to NTC themistor and connecting terminal block 100, directly contact, and indirect contact refers between NTC themistor and connecting terminal block 100 that, across the good heat conducting material of thin layer, this Heat Conduction Material directly contacts with NTC themistor, connecting terminal block 100 respectively.The quantity of binding post on the connecting terminal block 100 of the needs monitoring in circuit breaker is relevant with the number of poles of circuit breaker, as each utmost point of multipole circuit breaker comprises 1 inlet wire binding post and 1 outlet binding post, a four-pole circuit breaker comprises 8 binding posts, each binding post is joined 1 NTC themistor, needs 8 NTC themistor.And add the situation that need to add temperature rise monitoring point at the responsive place of other temperature rise (near wire contact) of circuit breaker, so form the number needs of the NTC themistor of temperature sensor 1, according to actual requirement, determine.Can there be various structures scheme in heat conduction bindiny mechanism 10, a kind of preferred scheme is: described heat conduction bindiny mechanism 10 comprises the insulation sheet material of good heat conduction and the terminal screw on connecting terminal block 100, the temperature-sensitive end of NTC themistor is washer type, temperature-sensitive element is placed in packing ring wire lead slot, and isolated and parcel by the insulation sheet material of good heat conduction, terminal screw is for being fastenedly connected the connecting terminal block 100 at circuit breaker by the temperature-sensitive end packing ring of NTC themistor.By this, be fixedly connected with, not only make NTC themistor and connecting terminal block 100 indirect contacts, and make to form being fixedly connected with of compression fit between the binding post of NTC themistor, insulation sheet material, connecting terminal block 100 and bus, in contact induction mode, sensitive, accurately gather the variations in temperature on binding post and bus.Each NTC themistor of temperature sensor 1 comprises circuit and the electric connecting terminal thereof that variations in temperature is converted to electric analoging signal, each electric connecting terminal is used for exporting an analog signal, for a temperature sensor 1, it can comprise a plurality of NTC themistor and Multi-path electricity link, and the corresponding road of each NTC themistor is for the electric connecting terminal of output temperature change modeling signal.The utility model preferably adopts No. 8 temperature sensors 1 that comprise that 8 NTC themistor and 8 road electric connecting terminals form, to meet the needs of the four-pole circuit breaker of general three-phase four-wire low-voltage distribution.
Multi-channel electronic analog switch 2 is a kind of diverter switches that multichannel switched to a road, Ta Ge road input is electrically connected to one by one with the lead-in wire of the electric connecting terminal of each NTC themistor respectively, Bing Jiangge road input cyclic switching is connected to an output, to realize the working method that MCU microcontroller 5 can each NTC themistor of cyclic access, save the data processing resources of MCU microcontroller 5, promote the operational efficiency of MCU.The mode of the switching controls of multi-channel electronic analog switch 2 can have two kinds, a kind of is to be controlled by MCU microcontroller 5, another kind is that automatic cycle is controlled, no matter which kind of control mode, all need to comprise a kind of control circuit matching with control mode, and these control circuits have all been integrated in commercially available multi-channel electronic analog switch device.The preferred multi-channel electronic analog switch 2 of the utility model is 8 channel electron analog switches, 8 channel electron analog switches comprise by a plurality of multi-channel electronic analog switch devices, formed 8 cut 1 switch module, these switch modules can comprise the form being comprised of 24 channel electron analog switch devices.In like manner, preferably the reason of 8 channel electron analog switches is also that it can meet the needs of the four-pole circuit breaker of general three-phase four-wire low-voltage distribution.
A/D change-over circuit 3 is a kind of standardized integrated circuit (IC)-components, its input end of analog signal is electrically connected to the output of multi-channel electronic analog switch 2, and exports to MCU microcontroller 5 after the analog signal of multi-channel electronic analog switch 2 outputs is converted to variations in temperature digital signal.It is also a kind of standardized code switch device that temperature arranges with code switch 4, it exports to MCU microcontroller 5 after by manual operation occurrence temperature threshold number signal, by manual operation code switch, generate MCU microcontroller 5 discernible digital codings (digital signal), these digital signal corresponding temperature threshold values.As can be seen here, MCU microcontroller 5 is by the relatively processing between simple variations in temperature digital signal and temperature threshold digital signal, just can judge that whether temperature rise is normal, for example, when the numerical value that variations in temperature digital signal represents does not exceed the numerical value that temperature threshold digital signal represents, comparative result is normal; When the numerical value that variations in temperature digital signal represents exceeds the numerical value that temperature threshold digital signal represents, comparative result is undesired.
MCU microcontroller 5 comprises a plurality of signal input parts for supplied with digital signal (being also pin), wherein first signal input is electrically connected to the output of A/D change-over circuit 3, secondary signal input arranges with the output of code switch 4 and is electrically connected to temperature, and the first signal input of MCU microcontroller 5 and secondary signal input arrange with the output of code switch 4 and are electrically connected to output, the temperature of A/D change-over circuit 3 respectively.MCU microcontroller 5 also comprises a plurality of signal output parts for output digit signals, and wherein a part is as the control signal output being connected with control signal output module 7, and another part is as the index signal output being connected with operating state indicating module 8.MCU microcontroller 5 can adopt standardized integrated circuit (IC) chip, it is according to the comparative result of the temperature threshold digital signal of the variations in temperature digital signal of first signal input and secondary signal input, respectively to control signal output module 7 output instruction signals, to operating state indicating module 8 output index signals.Be specially: at comparative result while being normal, to the command signal (as " 1 ") of control signal output module 7 outputs one " normally ", to operating state indicating module 8, export the number of command signal (as " 1 ") and the expression temperature of " normally " simultaneously; At comparative result while being undesired, to the index signal (as " 0 ") of control signal output module 7 outputs one " undesired ", to operating state indicating module 8, export the number of index signal (as " 0 ") and the expression temperature of " undesired " simultaneously.
Control signal output module 7 comprises control signal input and control signal output, control signal input is electrically connected to the command signal output of MCU microcontroller 5, and control signal output is electrically connected to tripping actuating device 200 and to tripping actuating device 200 output alarms or dropout control signal.At the inner tripping actuating device 200 using of circuit breaker, the device that mainly containing threads off activates and the device of threading off indication, comprising but be not limited to alarm 20, release 21, inner shunt opening device 22 etc.Temperature rise monitoring device 300 of the present utility model can mate with tripping actuating devices 200 such as these alarms 20, release 21, inner shunt opening devices 22 well by control signal output module 7.Due to alarm 20, release 21, it is different that inner shunt opening device 22 tripping actuating devices such as grade require Trig control signal, as needing larger exciting current, triggers magnetictrip, and electronic trip unit only needs very little switching signal just can trigger, therefore, the control signal of MCU microcontroller 5 outputs need to be converted to the signal that can match with various tripping actuating devices, and control signal output module 7 is exactly the device of changing adaptation signal, its circuit structure need be selected according to the requirement of tripping actuating device, if select a kind of electronic trip unit that can directly trigger by the control signal that MCU microcontroller 5 is exported, the circuit structure of control signal output module 7 can be simply to being only connection line, if select magnetictrip or audible-visual annunciator, control signal output module 7 just needs to adopt a kind of general switching circuit that can control Yi Ge loop on/off, by switching circuit, converts the control signal of MCU microcontroller 5 outputs to switching signal.Because general various tripping actuating devices need trigger by switching signal mostly, so the control signal of the control signal output of control signal output module 7 output is preferably switching signal.A kind of available scheme is, the control output interface 70 of incremental redundancy on control signal output module 7, the terminals of controlling output interface 70 comprise two kinds of modes of connection, wherein a kind of is to be connected in parallel with the control signal input of control signal output module 7, for exporting the command signal of MCU microcontroller 5, another kind is to be connected in parallel with the control signal output of control signal output module 7, for exporting the control signal (being switching signal) of control signal output module 7.Controlling output interface 70 can have a plurality of, they not only can be to the tripping actuating device 200 expansion access ports of circuit breaker inside, but also can be used for controlling to control final controlling element 500 outputs of circuit breaker outside, these external remote control are controlled final controlling element 500 and are included but not limited to remote alarms/display 50, long-range shunt release 51, remote switch control apparatus 52.As can be seen here, by the control output interface 70 of incremental redundancy, can greatly expand the function of the control final controlling element of the control function of circuit breaker, particularly Long-distance Control outside.
Operating state indicating module 8 is a kind of display unit, its display input is electrically connected to the index signal output of MCU microcontroller 5, and according to indication signal breaker connecting terminal row's temperature rising state of the index signal output output of MCU microcontroller 5 and the change information of temperature rise monitoring device self operating state.The index signal of MCU microcontroller 5 can comprise two kinds of forms: a kind of is the mode of inputting, showing with indicator light with " 1 "/" 0 " signal, and this form can be used for representing the work at present states such as whether temperature rise is normal, whether power supply is connected; Another kind is by digital signal, to input, with indicator panel, can quantize the mode of demonstration, and this form can be used for showing the relevant information under the current states such as temperature rise variation, temperature threshold.
Switching Power Supply supply module 6 is a kind of stabilized voltage power supplys, it is electrically connected to the power input of MCU microcontroller 5, and provide power adapter to whole temperature rise monitoring device 300, concrete supply power mode comprises two kinds of forms, wherein a kind of is directly to MCU microcontroller 5 power supply, then by MCU microcontroller 5 to each module for power supply; Another kind is not only directly to MCU microcontroller 5, to power, but also directly to other module for power supply.
The embodiment providing below in conjunction with accompanying drawing 1 further illustrates the embodiment of the temperature rise monitoring device 300 of extended pattern.The serial communication interface 9 of the temperature rise monitoring device 300 of extended pattern is a kind of standardized device, and its one group of terminals are electrically connected to the corresponding communication ends of MCU microcontroller 5.Serial communication interface 9 also comprises the interface end that can be used for selecting the central control room main frame 400 that connects circuit breaker outside, and with serial mode and central control room main frame 400 interaction datas.Central control room main frame 400 is not limited to computer, server, also comprise can with other communication control unit of MCU microcontroller 5 interaction datas.The version of serial communication interface 9 modules can have single type structure, two O-shaped structure, composite structured multiple, and the serial communication interface 9 of single type structure is RS485 communication interface modules, and it has the good advantages such as telecommunications functions.Certainly, the serial communication interface 9 of also not getting rid of the two O-shaped structures that formed by the change-over circuit between RS485 communication interface, RS232 communication interface and RS485 communication interface 9 and RS232 communication interface.The advantage of two O-shaped structures is can compatible RS485 interface and the access of the external equipment of two kinds of interfaces of RS232 interface.Do not get rid of the composite structured serial communication interface 9 being formed by the change-over circuit between RS485 communication interface, switching signal interface and RS485 communication interface and switching signal interface yet.Composite structured advantage is, the input of its energy compatible with digital signal and switching signal, the controls that switching signal equipment can be realized circuit breaker by serial communication interface 9.Single type structure, two O-shaped structure, composite structured standardized circuit and the device of all can adopting are realized, the utility model preferably adopts single type structure, by setting up RS485 communication interface at the temperature rise monitoring device of basic configuration, can realize with circuit breaker outside as the data interaction of the control appliances such as central control host, expanded long-range control, the digital management of circuit breaker, the function of networked operation.There is the problem that redundancy is many, cost is high in composite structured and two O-shaped structures, only adopts where necessary.
The utility model is set up RCI by the temperature rise monitoring device in basic configuration, also can realize circuit breaker external control actuator as the Long-distance Control of alarm, shunt opening device, device for switching etc.Attemperating unit of the present utility model is not only applicable to binding post and the busbar that is attached thereto thereof, equally applicable to various jointings such as the contact of low-voltage circuit breaker, cable joints.
Claims (10)
1. with a low-voltage circuit breaker for connecting terminal block temperature rise monitoring device, comprise connecting terminal block (100) and tripping actuating device (200), it is characterized in that:
Described low-voltage circuit breaker also comprises temperature rise monitoring device (300) and for whole temperature rise monitoring device (300) provides the Switching Power Supply supply module (6) of power adapter, it is electrically connected to the power input of the microcontroller (5) of temperature rise monitoring device (300);
Described temperature rise monitoring device (300) comprises the temperature sensor (1) consisting of a plurality of NTC themistor, the temperature-sensitive end of each NTC themistor conducts on the binding post that bindiny mechanism (10) is fixedly connected on described connecting terminal block (100) by heat respectively, for gather the variations in temperature on the binding post of connecting terminal block (100) of institute's correspondence connection in contact induction mode, each NTC themistor has a road for the electric connecting terminal of output temperature change modeling signal, and each described electric connecting terminal is electrically connected to the corresponding road input of multi-channel electronic analog switch (2) one by one, multi-channel electronic analog switch (2) Jiang Ge road input cyclic switching is connected to an output, and by this analog signal output to A/D change-over circuit 3, A/D change-over circuit (3) is converted to this variations in temperature analog signal the first signal input of exporting to microcontroller (5) after digital signal, temperature arranges the secondary signal input of exporting to microcontroller (5) with code switch (4) after by manual operation occurrence temperature threshold number signal, microcontroller (5) is according to the comparative result of the temperature threshold digital signal of the variations in temperature digital signal of first signal input and secondary signal input, respectively to control signal output module (7) output instruction signal, to operating state indicating module (8) output index signal, the control signal input of control signal output module (7) is electrically connected to the command signal output of microcontroller (5), the switch controlling signal that the control signal output of control signal output module (7) is electrically connected to tripping actuating device (200) and threads off to its output alarm or excitation breaker body, the display input of operating state indicating module (8) is electrically connected to the index signal output of microcontroller (5), and according to the change information of self operating state of the temperature rising state of the indication signal connecting terminal block (100) of microcontroller (5) output and temperature rise monitoring device (300).
2. the low-voltage circuit breaker with connecting terminal block temperature rise monitoring device according to claim 1, it is characterized in that: described circuit breaker is realized the telecommunication with central control room main frame (400) by fieldbus, described temperature rise monitoring device (300) also comprises serial communication interface (9), the terminals of serial communication interface (9) are electrically connected to the communication ends of microcontroller (5), the interface end choosing of serial communication interface (9) connects described central control room main frame (400), and with serial mode and central control room main frame (400) communication interaction data.
3. the low-voltage circuit breaker with connecting terminal block temperature rise monitoring device according to claim 1, it is characterized in that: described heat conduction bindiny mechanism (10) comprises the insulation sheet material of good heat conduction and the terminal screw on connecting terminal block (100), the temperature-sensitive end of described NTC themistor is washer type, temperature-sensitive element is placed in packing ring wire lead slot, and isolated and parcel by the insulation sheet material of good heat conduction, described terminal screw is fastenedly connected the temperature-sensitive end packing ring of described NTC themistor on the connecting terminal block (100) at circuit breaker.
4. the low-voltage circuit breaker with connecting terminal block temperature rise monitoring device according to claim 1, it is characterized in that: described control signal output module (7) also comprises controls output interface (70), the control signal output of it and control signal output module (7) is connected in parallel, and to the control signal of external control actuator (500) the output control signal output module (7) of circuit breaker.
5. the low-voltage circuit breaker with connecting terminal block temperature rise monitoring device according to claim 1, it is characterized in that: described control signal output module (7) also comprises controls output interface (70), the control signal input of it and control signal output module (7) is connected in parallel, and to external control actuator (500) output of circuit breaker the command signal from microcontroller (5).
6. the low-voltage circuit breaker with connecting terminal block temperature rise monitoring device according to claim 1, is characterized in that: the tripping actuating device of described circuit breaker (200) comprises alarm (20) and/or release (21) and/or inner shunt opening device (22).
7. the low-voltage circuit breaker with connecting terminal block temperature rise monitoring device according to claim 1, is characterized in that: described multi-channel electronic analog switch (2) is (8) passage multi-channel electronic analog switch.
8. the low-voltage circuit breaker with connecting terminal block temperature rise monitoring device according to claim 2, is characterized in that: described serial communication interface (9) is RS485 communication interface.
9. the low-voltage circuit breaker with connecting terminal block temperature rise monitoring device according to claim 2, is characterized in that: described serial communication interface (9) comprises the change-over circuit between RS485 communication interface, RS232 communication interface and RS485 communication interface and RS232 communication interface.
10. the low-voltage circuit breaker with connecting terminal block temperature rise monitoring device according to claim 2, is characterized in that: described serial communication interface (9) comprises the change-over circuit between RS485 communication interface, switching signal interface and RS485 communication interface and switching signal interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320339431.1U CN203398043U (en) | 2013-06-13 | 2013-06-13 | Low-voltage breaker with connecting terminal block temperature rise monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320339431.1U CN203398043U (en) | 2013-06-13 | 2013-06-13 | Low-voltage breaker with connecting terminal block temperature rise monitoring device |
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| Publication Number | Publication Date |
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| CN203398043U true CN203398043U (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320339431.1U Withdrawn - After Issue CN203398043U (en) | 2013-06-13 | 2013-06-13 | Low-voltage breaker with connecting terminal block temperature rise monitoring device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346044A (en) * | 2013-06-13 | 2013-10-09 | 上海诺雅克电气有限公司 | Low-voltage circuit breaker with wiring terminal strip temperature increase monitoring device |
| CN104597398A (en) * | 2015-01-31 | 2015-05-06 | 哈尔滨理工大学 | Intelligent pluggable circuit breaker and monitoring and pre-warning system thereof |
| CN107345838A (en) * | 2016-05-04 | 2017-11-14 | 浙江正泰电器股份有限公司 | The temperature collecting device and acquisition method of breaker |
| CN110877020A (en) * | 2019-11-18 | 2020-03-13 | 镇江宏联电工有限公司 | Wiring terminal strip test on-off test machine |
-
2013
- 2013-06-13 CN CN201320339431.1U patent/CN203398043U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346044A (en) * | 2013-06-13 | 2013-10-09 | 上海诺雅克电气有限公司 | Low-voltage circuit breaker with wiring terminal strip temperature increase monitoring device |
| CN103346044B (en) * | 2013-06-13 | 2015-11-25 | 上海诺雅克电气有限公司 | With the low-voltage circuit breaker of connecting terminal block temperature rise monitoring device |
| CN104597398A (en) * | 2015-01-31 | 2015-05-06 | 哈尔滨理工大学 | Intelligent pluggable circuit breaker and monitoring and pre-warning system thereof |
| CN107345838A (en) * | 2016-05-04 | 2017-11-14 | 浙江正泰电器股份有限公司 | The temperature collecting device and acquisition method of breaker |
| CN110877020A (en) * | 2019-11-18 | 2020-03-13 | 镇江宏联电工有限公司 | Wiring terminal strip test on-off test machine |
| CN110877020B (en) * | 2019-11-18 | 2024-04-30 | 镇江宏联电工有限公司 | Connecting terminal strip test on-off testing machine |
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