CN104037729A - Multi-channel digital-display temperature control circuit breaker - Google Patents
Multi-channel digital-display temperature control circuit breaker Download PDFInfo
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- CN104037729A CN104037729A CN201410269961.2A CN201410269961A CN104037729A CN 104037729 A CN104037729 A CN 104037729A CN 201410269961 A CN201410269961 A CN 201410269961A CN 104037729 A CN104037729 A CN 104037729A
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Abstract
The invention discloses a multi-channel digital-display temperature control circuit breaker, which belongs to the field of electric utilization protection equipment. The multi-channel digital-display temperature control circuit breaker comprises a general control and temperature adjustment display circuit, a power supply and polling signal generation circuit, a thermoelectric potential acquisition circuit and a multi-channel over-temperature power-off circuit. The multi-channel digital-display temperature control circuit breaker disclosed by the invention is capable of carrying out monitoring and electric utilization protection on at most ten groups of circuit channels according to the surface temperature value of a cable through a group of circuit breakers, suitable for various different temperature environments, more convenient and safer, and also capable of improving the cost performance thereof.
Description
Technical field
The invention belongs to electricity protection apparatus field, be specifically related to a kind of multichannel digital display temperature-control circuit breaker.
Background technology
In existing distribution line, due to the difference of leader cable and branch cable cross-sectional area, allow the ampacity that passes through not identical.So leader cable with on branch cable, all need to configure the rated current circuit breaker corresponding with conductive cores ampacity; article one, in distribution line; main line and each branch line cable cross-sectional area used are not identical; so during by certain value electric current, caloric value is not identical, so often need to configure a plurality of different size circuit breakers, carry out Electrical Safety protection.
Meanwhile, it is overheated with electric loading or electric heating equipment, to occur, and display alarm in time and cut off power supply continues energising work, very easily cause electricity consumption load faulty to expand or the interior heated object of electric heating equipment because of excess Temperature impaired.For example, when electricity consumption site surrounding temperature anomaly raises (: occur the condition of a fire, calendar variation), and can not start in time warning, extinguishing device and cut off power consumption equipment power supply, security incident may occur, resulting in greater loss.
But when meanwhile, cable surface insulating layer material is identical, heatproof value is certain.No matter (for example: conventional cable-polyvinylchloride insulating material cable is heat-resisting be divided into 65 ℃, 80 ℃, 90 ℃, 105 ℃ four kinds) (copper that consults reference materials, aluminum fusing point are respectively 1084 ℃, 660 ℃) is so cable cross-sectional area thickness, as long as be controlled at the following work of respective insulation layers material heat resisting temperature point, distribution line is safe.
Summary of the invention
The object of this invention is to provide a kind of multichannel digital display temperature-control circuit breaker, it can only pass through one group of circuit breaker, according to cable surface temperature value, ten groups of circuit paths is at the most carried out to Electrical Safety protection.
For achieving the above object, technical scheme of the present invention is:
A multichannel digital display temperature-control circuit breaker, is characterized in that: comprise that master control and temperature regulate display circuit, power and patrol and examine signal generating circuit, thermoelectric potential Acquisition Circuit, multichannel overtemperature power-down circuit; Described master control and temperature regulate display circuit to comprise XMT(temperature digital-display regulation meter), the B9 end of this XMT, B10 end by respectively with 220V distribution line live wire L1, zero line N is connected and obtains 220V AC power, and under voltage circuit breaker and release have accordingly been installed between the two; Described power supply and patrol and examine signal generating circuit, comprises transformation rectification filtering unit and multiple signals routing inspection unit, and the operating voltage obtaining by transformation rectification filtering unit is 6V, and multiple signals routing inspection unit is sent signal lamp by LED; Described thermoelectric potential Acquisition Circuit, by aforesaid 6V voltage, provide power supply, this circuit comprises the multi way temperature sensing unit corresponding with aforementioned multiple signals routing inspection unit, and corresponding temperature signal collection unit, in described temperature sensing unit, establish temperature sensor WR, the output of this circuit is connected with thermoelectric potential input B2, the B3 of XMT; Described multichannel overtemperature power-down circuit, its power supply two ends are connected with the zero line N of 220V distribution line and the relay output end B13 of XMT respectively, this circuit comprises and Multi-channel parallel connection breaking units corresponding in foregoing circuit, and each unit is comprised of temperature relay SSR and shunt release FL.
Described multichannel is passage 1-path 10.
Between the B9 end of described XMT and the live wire L1 of 220V power supply, be provided with protective tube PU and closed rotary switch SB3.
The relay output end B13 of described XMT has also connected normally-closed contact KM3, KM3 connects with A.C. contactor KM, normally opened contact KM1, normally opened contact KM2 parallel with one another, the other end of normally opened contact KM1 has connected magneto bell HA, and the other end of magneto bell HA has connected the normally closed switch button SB2 that controls its work.
Described multiple signals routing inspection unit is controlled its work by combination unit switch SB1, by potentiometer R3, regulates polling rate, and the resistance of potentiometer R3 increases the also prolongation thereupon of polling period time.
The control switch S of described multiple signals routing inspection unit is that hilted broadsword ten is thrown change over switch, and the model of its timing IC2 is NE555, and the model of its counting IC3 is CD4017.
Described thermoelectric potential Acquisition Circuit adopts the direct current relay J1-J10 of dpdt double-pole double-throw (DPDT) control coil voltage to control.
Technique effect of the present invention is:
1. can only pass through one group of circuit breaker, according to cable surface temperature value, ten groups of circuit paths at the most be monitored and Electrical Safety protection, not only more convenient and safety, has also improved its cost performance;
2. can be to occurring the single branch road auto-breaking of the fault such as overheated and giving the alarm, technical staff searches with to solve fault also more convenient;
3. be applicable to various materials, the different cable of cross-sectional area, also can under different temperature of living in and heat dissipation environment, regulate;
4. can not coexist under ambient temperature conditions according to cable, the ampacity of the cable that reasonably increases electric power, maximized utilization power cable electric energy transmitting.
Accompanying drawing explanation
Fig. 1 is that master control and the temperature in the present invention regulates display circuit;
Fig. 2 is the power supply in the present invention and patrols and examines signal generating circuit;
Fig. 3 is the thermoelectric potential Acquisition Circuit in the present invention;
Fig. 4 is the multichannel overtemperature power-down circuit in the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further detailed.
Operation principle of the present invention:
As shown in Figure 1, closed rotary switch SB3, the upper B9 of XMT, B10 end is through distribution line L
1, SB
3protective tube FU obtains alternating current 220V working power between zero line N, and in XMT, master relay obtains closed conducting between electric its upper contact B5 and B6, under voltage circuit breaker NM
1-225S control end obtains 220V AC power adhesive through B5, the B6 contact of distribution line L1 and closed conducting between zero line N, now closed under voltage circuit breaker NM
1-225S, can obtain electric by electric loading.
As shown in Figure 2, transformer T primary coil is connected to B9, the B10 end of XMT and obtains power supply, and the 9V alternating voltage of secondary output obtains stable+6V direct voltage output through rectifier diode VD1-VD4 rectification, capacitor C 1 filtering at three-terminal voltage-stabilizing ic chip 1 (LM7806) the 3rd pin and provides DC supply for the XMT in Fig. 1, the multiple signals routing inspection unit in Fig. 2, the thermoelectric potential Acquisition Circuit in Fig. 3.By channeling signal routing inspection unit such as IC2, IC3; When hilted broadsword ten is thrown change over switch S and thrown in S1 position, XMT shows: the temperature value of temperature sensor WR1; Change over switch S throws in the temperature value of S6 thermometric instrument circulation displays temperature transducer WR1-WR6 test; With should throw when S10 by change over switch S, the circulate temperature value of ten passages of displays temperature transducer WR1-WR10 of XMT; And indicate the corresponding relation between each temperature sensor and thermometric instrument indicating value by luminous tube LED1-LED10 correspondence; Polling rate is regulated by potentiometer R5, and R5 resistance increases polling period time lengthening, otherwise shortens.During open combinations switch S B1, patrol and examine and stop, the shown temperature value of thermometric instrument is the test value of current channel temperature transducer.As IC3(CD4017) during the 3rd pin (be A3 end) output high potential, corresponding LED1 is luminous.
As shown in Figure 3, electric charge provides base current through resistance R 5 current limlitings to triode BG1, between BG1 collector and emitter saturation conduction relay J 1 electric (now LED2-LED10 is electronegative potential, so relay J 2-J10 is in off-state), the thermoelectric potential value on temperature sensor WR2 is carried out the indication of the temperature value of first passage, is compared and control through the two double-throw contacts and XMT thermoelectric potential input B2 and B3 input XMT thermometric instrument of opening in relay J 1; In like manner by relay J 1-J10, being responsible for temperature sensor WR1-WR10 thermoelectric potential collection and input temp instrument carries out the indication of temperature value, compares and control.
As shown in Figure 4, in use, when certain channel temperature is elevated to thermometric instrument alarm settings point temperature, conducting between alarm relay output B11 and B13 in thermometric instrument, A.C. contactor KM coil obtains electric, on it, normally opened contact KM1, KM2 closure, normally-closed contact KM3 disconnect, and A.C. contactor KM self-locking, magneto bell HA give the alarm.The solid-state relay SSRX of respective channel holds to such an extent that conduct by B13, and the shunt release FLX controlling on this passage place distribution line trips, cuts off this passage power supply output.All the other not overtemperature distribution line continue to obtain electric work.When on duty and this subchannel shunt release effect out of hand without personnel, this channel temperature value continue to rise to highest temperature power-off protection point when occur reported to the police; Master control contact B5, B6 closed on thermometric instrument open circuit; under-voltage release action, general supply circuit breaker NM1-225S tripping operation; cut off the power supply output of follow-up all passages; to supply line with by electric loading, play Electrical Safety protective effect; the lasting warning of magneto bell HA played fault suggesting effect simultaneously, only has and manually presses SB
2normally closed push button switch can be removed electric bell HA and report to the police.
The distribution line cable safeguard protection of heat-resisting 80 ℃ of polyvinylchloride of take is below example.
Some temperature sensor measurement ends are wrapped up respectively and are fixed on each branch cable copper (aluminium) core joint, note keeping insulation good between sensor measurement end and cable core.Change over switch S determines to enable port number, and while only adopting a temperature sensor, S throws in S1; While adopting ten temperature sensors, S throws in S10 place by that analogy.Rotary switch SB1 determines the start and stop of patrolling and examining.Closed rotary switch SB1 is arranged at 75.0 ℃ by the alert temperature spot of temperature indicating regulator statistical tables and reports, and total power-off temperature spot is arranged at 79.9 ℃; Regulator potentiometer R3 makes interchannel polling rate meet instructions for use, closed relative breaker, and load obtains electric work.When normal thermometric instrument circulate successively show each passage temperature value and whether luminous with LED1-LED10, express respective channel, when passage reading is less than 75.0 ℃, the load of being failure to actuate of temperature control circuit breaker obtains electric work.While occurring in use that temperature on certain distribution cable rises to thermometric instrument and shows 75.0 ℃, thermometric instrument alarm relay B11 and B13 end closure; KM ac contactor coil obtains electric, and normally opened contact KM2 is closed, and contactor KM self-locking KM1 is closed, magneto bell HA obtains electric alarm, trigger respective channel solid-state relay conducting output control signal simultaneously makes this passage shunt circuit breaker action; Disconnect this distribution cable power supply output.As there being many channel temperatures to reach 75.0 ℃ and above temperature simultaneously, temperature control circuit breaker carries out respective channel power-off protection successively.If do not opened circuit between XMT control end B5, B6 when certain distribution cable is installed circuit breaker channel temperature and continued to be elevated to 79.9 ℃.Master controller-under voltage circuit breaker opens circuit; Cut off main electricity, to total distribution line with protect by electric loading.
Protection at electric heating equipment fault alarm and anti-overtemperature.
With a Uniformity of Temperature Field, require 800 ℃ ± 5 ℃, the anti-temperature field of well formula electric heating equipment that 3rd district control heating is example over ceiling temperature:
Three temperature sensor measurement ends are arranged in to the Gao Dian position, temperature field of three thermals treatment zone, the alert temperature value of temperature indicating regulator statistical tables and reports is set in to 804.5 ℃, total power-off temperature is located at 805.0 ℃.
In firing equipment long-time running, appearance personnel operate miss or the electric heating equipment system failure (for example: during control device-solid-state relay puncture short) thermometric instrument indicating value is elevated to 804.5 ℃, A.C. contactor KM obtains electric adhesive self-locking alternating current electric bell HA and obtains electric alarm, as disposed temperature without personnel, continue to be elevated to 805.0 ℃, can select automatic trip, disconnect this thermal treatment zone power supply, avoid temperature in firing equipment to surpass ceiling temperature, impact is heat-treated the interior quality of workpiece.
Can be used for monitoring ambient temperature in each room, electricity consumption place (comprising factory building, hotel, dormitory).
Maximum ten thermode diameter 0.5mm temperature sensors are arranged in to each and need 200mm place, below, monitoring roof, room, thermometric instrument alarm temperature value is set in to a certain temperature (as 70.0 ℃) each passage power-off cooling spray temperature setting is placed in to a certain temperature (for example 105.0 ℃).When certain room environment temperature anomaly is elevated to 70.0 ℃, start magneto bell HA and report to the police and cut off this room corresponding power input, by LEDx indicator light, inform alert locations simultaneously.In case of alarm responds processing in time without personnel, when ambient temperature continues to rise to 105 ℃, can according to requirements automatically start the fire extinguishings of lowering the temperature such as this place's spray equipment.And this device have highly sensitive, the feature such as stability, anti-interference are good.
Claims (7)
1. a multichannel digital display temperature-control circuit breaker, is characterized in that: comprise that master control and temperature regulate display circuit, power and patrol and examine signal generating circuit, thermoelectric potential Acquisition Circuit, multichannel overtemperature power-down circuit; Described master control and temperature regulate display circuit to comprise XMT, the B9 end of this XMT, B10 end by respectively with 220V distribution line live wire L1, zero line N is connected and obtains 220V AC power, and under voltage circuit breaker and release have accordingly been installed between the two; Described power supply and patrol and examine signal generating circuit, comprises transformation rectification filtering unit and multiple signals routing inspection unit, and the operating voltage obtaining by transformation rectification filtering unit is 6V, and multiple signals routing inspection unit is sent signal lamp by LED; Described thermoelectric potential Acquisition Circuit, by aforesaid 6V voltage, provide power supply, this circuit comprises the multi way temperature sensing unit corresponding with aforementioned multiple signals routing inspection unit, and corresponding temperature signal collection unit, in described temperature sensing unit, establish temperature sensor WR, the output of this circuit is connected with thermoelectric potential input B2, the B3 of XMT; Described multichannel overtemperature power-down circuit, its power supply two ends are connected with the zero line N of 220V distribution line and the relay output end B13 of XMT respectively, this circuit comprises and Multi-channel parallel connection breaking units corresponding in foregoing circuit, and each unit is comprised of temperature relay SSR and shunt release FL.
2. a kind of multichannel digital display temperature-control circuit breaker according to claim 1, is characterized in that: described multichannel is passage 1-path 10.
3. a kind of multichannel digital display temperature-control circuit breaker according to claim 1, is characterized in that: between the B9 end of described XMT and the live wire L1 of 220V power supply, be provided with protective tube PU and closed rotary switch SB3.
4. a kind of multichannel digital display temperature-control circuit breaker according to claim 1, it is characterized in that: the relay output end B13 of described XMT has also connected normally-closed contact KM3, KM3 connects with A.C. contactor KM, normally opened contact KM1, normally opened contact KM2 parallel with one another, the other end of normally opened contact KM1 has connected magneto bell HA, and the other end of magneto bell HA has connected the normally closed switch button SB2 that controls its work.
5. a kind of multichannel digital display temperature-control circuit breaker according to claim 1, is characterized in that: described multiple signals routing inspection unit is controlled its work by combination unit switch SB1, by potentiometer R3, regulates polling rate.
6. a kind of multichannel digital display temperature-control circuit breaker according to claim 1, is characterized in that: the control switch S of described multiple signals routing inspection unit is that hilted broadsword ten is thrown change over switch, and the model of its timing IC2 is NE555, and the model of its counting IC3 is CD4017.
7. a kind of multichannel digital display temperature-control circuit breaker according to claim 1, is characterized in that: described thermoelectric potential Acquisition Circuit adopts the direct current relay J1-J10 of dpdt double-pole double-throw (DPDT) control coil voltage to control.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410269961.2A CN104037729B (en) | 2014-06-17 | 2014-06-17 | Multi-channel digital-display temperature control circuit breaker |
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| CN201410269961.2A CN104037729B (en) | 2014-06-17 | 2014-06-17 | Multi-channel digital-display temperature control circuit breaker |
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| CN104037729B CN104037729B (en) | 2017-04-19 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106113585A (en) * | 2016-06-28 | 2016-11-16 | 中国南方航空工业(集团)有限公司 | Aviation engine oil package automatic ironing device |
| CN109581152A (en) * | 2018-12-29 | 2019-04-05 | 国网新疆电力有限公司昌吉供电公司 | A kind of district cable fault detection system and method |
| CN110071009A (en) * | 2019-05-28 | 2019-07-30 | 华翔翔能电气股份有限公司 | A kind of vacuum circuit breaker according to voltage and temperature disconnecting warning |
| CN110750121A (en) * | 2019-12-03 | 2020-02-04 | 中北大学 | Overtemperature automatic power-off temperature-controllable heating system for shock tube heating |
| CN112636302A (en) * | 2020-12-22 | 2021-04-09 | 洛阳市烟草公司汝阳县分公司 | Multi-path seedling raising tray water temperature monitoring protection circuit |
| CN113161992A (en) * | 2021-03-25 | 2021-07-23 | 中船澄西船舶修造有限公司 | Film developing liquid thermostat over-temperature power-off protection circuit and troubleshooting method |
| CN113809717A (en) * | 2021-09-24 | 2021-12-17 | 深圳市智联云控科技有限公司 | Power utilization safety monitoring method and device and electronic equipment |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106113585A (en) * | 2016-06-28 | 2016-11-16 | 中国南方航空工业(集团)有限公司 | Aviation engine oil package automatic ironing device |
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| CN110750121B (en) * | 2019-12-03 | 2021-08-24 | 中北大学 | Overtemperature automatic power-off temperature-controllable heating system for shock tube heating |
| CN112636302A (en) * | 2020-12-22 | 2021-04-09 | 洛阳市烟草公司汝阳县分公司 | Multi-path seedling raising tray water temperature monitoring protection circuit |
| CN113161992A (en) * | 2021-03-25 | 2021-07-23 | 中船澄西船舶修造有限公司 | Film developing liquid thermostat over-temperature power-off protection circuit and troubleshooting method |
| CN113809717A (en) * | 2021-09-24 | 2021-12-17 | 深圳市智联云控科技有限公司 | Power utilization safety monitoring method and device and electronic equipment |
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| CN104037729B (en) | 2017-04-19 |
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