CN103324127A - Electric multiple unit flashover prevention device - Google Patents
Electric multiple unit flashover prevention device Download PDFInfo
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- CN103324127A CN103324127A CN2013102768942A CN201310276894A CN103324127A CN 103324127 A CN103324127 A CN 103324127A CN 2013102768942 A CN2013102768942 A CN 2013102768942A CN 201310276894 A CN201310276894 A CN 201310276894A CN 103324127 A CN103324127 A CN 103324127A
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Abstract
The present invention discloses an electric multiple unit flashover prevention device and relates to a protection device with electric arc discharge resistance. According to the device, the sensor technology and single chip microcomputer control are utilized to realize the prevention of a flashover phenomenon appeared in the high-speed operation process of an electric multiple unit, and the device is installed in a transformation interval of an electric multiple unit traction substation with frequent fog and haze and is mainly formed by the order connection of a detection part, a control part and an alarm part. The detection part is a biosensor which is formed by the order connection of a porous gas permeable membrane, immobilized nitrifying bacteria and an oxygen electrode combination. Gas to be detected enters through the porous gas permeable membrane, through the cooperation of the immobilized nitrifying bacteria and the oxygen electrode combination, the detection of the nitrite content in the gas to be detected is completed, and disadvantages that in the prior art a flashover prevention device passively prevents the flashover phenomenon and can not actively carries out prediction, the flashover prevention reliability of insulated coating materials for preventing flashover coated at the surface of vehicle proof high voltage equipment is low, and the frequent inspection is needed are overcome.
Description
Technical field
Technical scheme of the present invention relates to the protective device of arc resistant discharge, specifically the anti-pollution flashover device of motor train unit train.
Background technology
Haze weather can cause the motor train unit train roof high voltage component flashover of high-speed motion and damage high voltage component.The a large amount of suspended particulate substances that contain in the haze are attached on the high-pressure system insulator, just might form conductive layer on the insulating material surface, and high-tension electricity will puncture insulator arrangement ground connection, causes pollution flashover.The pollution flashover phenomenon is exactly under overcast and rainy haze weather, the air insulation reduction, and the high-tension electricity on the contact net to the high-tension apparatus of motor train unit, causes equipment failure through air breakdown.It not only can cause equipment surface to be corroded by electric current, also might cause train deceleration or stoppage in transit, has a strong impact on train operation.At present, the anti-pollution flashover device that is used for the protection of electric utility mainly is to solve pollution flashover and the sudden strain of a muscle of anti-rain and the mist sudden strain of a muscle problem that rapid contamination accumulation produces, and CN201191544 discloses a kind of pollution flashover preventing insulator device; CN101527194 discloses a kind of anti-pollution flashover method and pollution flashover preventing insulator device that is applicable to rapid contamination accumulation; CN201527861U has disclosed a kind of anti-pollution flashover device of porcelain insulator, but such device is passive protection, can't accurately and timely record pollutants in air concentration and feeds back.That adopts in addition prevents that the method that the pollution flashover phenomenon occurs from being to prevent the coatings of pollution flashover at roof high-tension apparatus external coating, for example CN101649155 discloses a kind of self-cleaning ice-over resistant phase-change coating that is applicable to multiple coating on surface of article, be particularly useful for power supply, railway electrification power supply insulator dirt-proof ice-covering-proof, improve Security of the system and service efficiency, but the method at high-tension apparatus external coating coatings needs the frequent integrality that checks coating, and how international and domestic research further improves making little progress of insulating material anti-fouling flashover performance; Another thinking is to make a strategic decision according to the data that meteorological department along the line provides, but the detection site of meteorological department is a lot of not near the high ferro circuit, can't accurately and timely record pollutants in air concentration and feed back to control center, the correctness promptness of decision-making is exerted a certain influence.Thus, propose the higher motor train unit train of a kind of automatically detection, Based Intelligent Control and reliability and prevent that the pollution flashover device is very necessary.
Summary of the invention
Technical matters to be solved by this invention is: provide motor train unit train to prevent the pollution flashover device, overcome the passive pollution flashover phenomenon is protected of anti-pollution flashover device of prior art, shortcoming that can not positive prediction, and low and need the frequent shortcoming that checks in the anti-pollution flashover reliability of the coatings of the anti-pollution flashover of roof high-tension apparatus external coating.
The present invention solves this technical problem the technical scheme that adopts: motor train unit train is prevented the pollution flashover device, that a kind of sensor technology and Single-chip Controlling utilized realizes preventing that the device of pollution flashover phenomenon from appearring in motor train unit train in the high-speed cruising process, be installed in the power transformation interval of motor-car traction substation of frequent generation haze weather, mainly by the test section, control section and the part of reporting to the police connect and compose successively, and by the i.e. stabilized voltage supply power supply of an output 5V DC voltage of power module, wherein the test section is biology sensor, control section comprises single-chip microcomputer and peripheral circuit thereof, the part of reporting to the police is buzzer alarm circuit, the signal output part of biology sensor is wired to the P1.1 pin of singlechip chip, the P1.0 pin of singlechip chip is wired to buzzer alarm circuit, and stabilized voltage supply is given the test section simultaneously, control section and the part of reporting to the police provide the 5V DC voltage.
Above-mentioned motor train unit train is prevented the pollution flashover device, described biology sensor makes up three parts by porous gas permeable membrane, using immobilized nitrifying bacteria and oxygen electrode and is formed by connecting in turn, gas to be measured enters by the porous gas permeable membrane, cooperates the detection of finishing gas nitrite to be measured by using immobilized nitrifying bacteria and oxygen electrode combination.
Above-mentioned motor train unit train is prevented the pollution flashover device, and the nitrite concentration lowest detection of described biology sensor is limited to 0.01mmol/L, and is indirectly learnt the content of oxynitrides in the atmosphere by the content of detected nitrite.
Above-mentioned motor train unit train is prevented the pollution flashover device, and described single-chip microcomputer adopts the AT89C51 chip, and its peripheral circuit comprises crystal oscillator and the reset circuit of single-chip microcomputer work indispensability.
Above-mentioned motor train unit train is prevented the pollution flashover device, described buzzer alarm circuit is that resistance, triode and the hummer of 1K consists of by phase inverter, resistance value mainly, phase inverter contact resistance value is an end of the resistance of 1K, the base stage of another termination triode of this resistance, the grounded emitter of this triode, collector connects the negative pole of hummer, and an end of the positive polarity of this hummer connects the 5V power supply.
Does above-mentioned motor train unit train is prevented the pollution flashover device, and the program circuit of described single-chip microcomputer is: beginning → program initialization → haze content exceed standard?
Continue to detect;
Warning → termination routine.
Above-mentioned motor train unit train is prevented the pollution flashover device, and wherein related parts, components and parts are all by commercially available, and it is installed and method of attachment all is that those skilled in the art are known.
The invention has the beneficial effects as follows:
The outstanding substantive distinguishing features of the anti-pollution flashover device of motor train unit train of the present invention is:
(1) biology sensor in the anti-pollution flashover device of motor train unit train of the present invention is a kind of device that can detect the sulfide that causes haze and amount of nitrides, the ultimate principle of its work is: test substance, be sulfide and the nitride in the haze, detected by the molecular recognition receptor in this biology sensor, specific reaction will occur in the biosensor of molecular recognition receptor, the specific reaction that again biosensor is occured and signal are via physical component---transducer, change light into, electricity, the signal that sound etc. easily detect, thus indirectly know determinand for information about; This biology sensor is combined by porous gas permeable membrane, using immobilized nitrifying bacteria and oxygen electrode, nitrobacteria wherein with nitrite as unique energy, its respiratory activity increases with the existence of nitrite, the dissolved oxygen concentration reduction amount that respiratory causes can be detected by oxygen electrode, thereby the content that indirectly reflects nitrite reflects the content of oxynitrides in the atmosphere with this.
(2) single-chip microcomputer in the anti-pollution flashover device of motor train unit train of the present invention adopts the AT89C51 chip, and the P1.1 pin of this chip receives the electric signal that biology sensor detects, the sounding of the P1.0 pin control hummer of this chip; The peripheral circuit of single-chip microcomputer comprises crystal oscillator and the reset circuit of single-chip microcomputer work indispensability, has guaranteed the normal operation of single-chip microcomputer.The air pollutant concentration that monitors when wherein, the alarm criteria value is once breakdown in the process of operation by motor train unit train is determined.The signal that single-chip microcomputer receives the biology sensor transmission also carries out analysis and Control, and when biology sensor monitored the haze content value of being above standard, the hummer that single-chip microcomputer receives the signal of the haze content value of being above standard and controls warning circuit sent alerting signal; If biology sensor detects haze content in standard value range, the hummer of the Single-chip Controlling warning circuit alert signal of not transmitting messages.The principle whether hummer sends alerting signal is: an end of the positive polarity of hummer is connected to above the 5V power supply, the other end is connected to the collector of triode, the base stage of triode is controlled by a Sheffer stroke gate resistance in series R2 by the P0.1 pin of single-chip microcomputer, when the P1.0 pin when low, Sheffer stroke gate output high level, the triode conducting, the electric current of hummer forms the loop like this, sounds; When P1.0 pin when being high, Sheffer stroke gate output low level, the triode cut-off, hummer is not sounded, and resistance R 2 has guaranteed that the base voltage of triode is in effective range.The user can be by the programmed control single-chip microcomputer the level of P1.0 pin just make hummer sound or close; The sound size of hummer and tone can be by adjusting single-chip microcomputer the high level time of P1.0 pin and the waveform of output control.
The significant progress of the anti-pollution flashover device of motor train unit train of the present invention is:
(1) motor train unit train of the present invention prevents that biology sensor selectivity used in the pollution flashover device is good, and antijamming capability is strong.
(2) the anti-pollution flashover device functional reliability of motor train unit train of the present invention is high, effectively the real-time air quality of perception and avoid the generation of pollution flashover accident by the working voltage of change motor train unit train;
(3) pollutant levels of the anti-at any time perception train running interval of pollution flashover device of motor train unit train of the present invention, although motor-car speed per hour in the high interval of pollutant levels reduces, but the time of delaying can recover in the second best in quality interval of the remaining air of this range of driving, cause thus the late time of motor train unit train to control in minutes, and be unlikely to cause the late a few hours due to withdrawal of train or the system-wide section reduction of speed;
(4) the anti-more existing insulating material technology that is coated with of pollution flashover device of motor train unit train of the present invention, overcome the passive pollution flashover phenomenon is protected of anti-pollution flashover device of prior art, shortcoming that can not positive prediction, and low in the anti-pollution flashover reliability of the coatings of the anti-pollution flashover of roof high-tension apparatus external coating, need frequent check and can air-polluting shortcoming when using.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the formation schematic block diagram of the anti-pollution flashover device of motor train unit train of the present invention.
Fig. 2 is the test section principle of work schematic diagram of the anti-pollution flashover device of motor train unit train of the present invention.
Fig. 3 is the formation schematic diagram of the control section of the anti-pollution flashover device of motor train unit train of the present invention.
Fig. 4 is that the buzzer alarm circuit of the anti-pollution flashover device of motor train unit train of the present invention consists of schematic diagram.
Fig. 5 is that the stabilized voltage supply of the 5V DC voltage of the anti-pollution flashover device of motor train unit train of the present invention consists of schematic diagram.
Fig. 6 is the Single Chip Microcomputer (SCM) program process flow diagram of the anti-pollution flashover device of motor train unit train of the present invention.
Embodiment
Embodiment illustrated in fig. 1 showing, the anti-pollution flashover device of motor train unit train of the present invention is connected to form successively by test section, control section and warning part, and is that a stabilized voltage supply of exporting the 5V DC voltage is powered to various piece by power module respectively.
Embodiment illustrated in fig. 2 showing, the principle of work of the test section of anti-its work of pollution flashover device of motor train unit train of the present invention is: test substance, be sulfide and the nitride in the haze, detected by the molecular recognition receptor in this biology sensor, specific reaction will occur in the biosensor of molecular recognition receptor, consequent signal changes light into via this physical component of signal conversion transducer, these signals that easily detect of electricity harmony, these light, electricity and acoustical signal are detected by the signal detector in the biology sensor, thereby indirectly know determinand for information about.
Embodiment illustrated in fig. 3 showing, the formation of the control section of the anti-pollution flashover device of motor train unit train of the present invention is: control section mainly comprises single-chip microcomputer and peripheral circuit thereof, described single-chip microcomputer adopts the AT89C51 chip, the P1.1 pin of this chip receives the electric signal that biology sensor detects, the sounding of the P1.0 pin control hummer of this chip, peripheral circuit comprises crystal oscillator and the reset circuit of single-chip microcomputer work indispensability, wherein C1 and C2 parallel connection accesses the 5V power supply, C2 is an electrochemical capacitor, its negative pole series connection reset switch S, access single-chip microcomputer RST pin and resistance in series R1 consisted of reset circuit thus after the other end of reset switch S and C1 linked to each other; With crystal oscillator U access in parallel single-chip microcomputer XTAL1 and XTAL2 pin, and want reliable ground between C3 and the C4 after capacitor C 3 and the C4 series connection; For guaranteeing single-chip microcomputer normal operation, the EA pin ground connection of this chip.The electric capacity of C1 is 22 μ F, and the electric capacity of C2 is 10 μ F, and the electric capacity of C3 is 30pF, and the electric capacity of C4 is 30pF.
Single-chip microcomputer receives the signal of biology sensor transmission and carries out analysis and Control, and specifically, when biology sensor monitoring haze content surpassed the standard value that sets, single-chip microcomputer received signal and controls warning circuit and report to the police; If the biology sensor detected value in the standard value range that sets, the single-chip microcomputer alert signal of not transmitting messages.
Embodiment illustrated in fig. 4 showing, the buzzer alarm circuit of the warning part of the anti-pollution flashover device of motor train unit train of the present invention consists of: phase inverter A that model is 74HC00 of single-chip microcomputer P1.0 pin access, the phase inverter A resistance R 2 that a resistance value is 1K of forward connecting, the base stage of resistance R 2 another termination triode Q, the grounded emitter of triode Q, triode Q collector connects the negative pole of hummer F, and positive pole one end of hummer F is connected to above the 5V power supply.The principle of work of this buzzer alarm circuit is: when single-chip microcomputer P1.0 pin when low, the Sheffer stroke gate output high level of phase inverter, triode Q conducting like this and the formation loop of hummer F, is sounded; When single-chip microcomputer P1.0 pin when being high, the Sheffer stroke gate output low level of phase inverter, triode Q cut-off, hummer F does not sound, and resistance R 2 has guaranteed that the base voltage of triode Q is in effective range.The user can just make hummer F sound by the level of programmed control single-chip microcomputer P1.0 pin or close; The sound size of hummer F and tone can be controlled by the high level time of adjustment single-chip microcomputer P1.0 pin and the waveform of output.
Embodiment illustrated in fig. 5 showing, the voltage-stabilized power supply circuit formation of the 5V DC voltage of the anti-pollution flashover device of motor train unit train of the present invention is: comprise civil power 220V is become the transformer of 8V, four rectifier bridge, three terminal regulator W7805, diode IN5401, the capacitor C 5 of 220 μ F-25V, the capacitor C 6 of 1 μ F and capacitor C 7 of 0.33 μ F that the IN5401 diode forms.Civil power access 220/8V transformer; the alternating current of 8V is accessed the two ends of the rectifier bridge that is formed by four IN5401 diodes; receive the IN end of three terminal regulator W7805 behind the other two ends of rectifier bridge parallel filtering capacitor C 5 and the C6; the GND end of three terminal regulator W7805 and other devices are altogether; the OUT end output 5V direct current of three terminal regulator W7805; shunt capacitance C7 eliminates and to export stably the 5V direct current behind the high frequency noise in the output voltage for modules, and holds reverse parallel connection diode IN5401 to play the effect of protecting three terminal regulator at the IN of three terminal regulator W7805 end and OUT.
Embodiment illustrated in fig. 6 showing, the Single Chip Microcomputer (SCM) program flow process of the anti-pollution flashover device of motor train unit train of the present invention is: does beginning → program initialization → haze content exceed standard?
Continue to detect;
Warning → termination routine.
Embodiment 1
According to the anti-pollution flashover device of the motor train unit train of above-mentioned Fig. 1, Fig. 3, Fig. 4, Fig. 5 and formation the present embodiment embodiment illustrated in fig. 6, wherein used biology sensor is combined by porous gas permeable membrane, using immobilized nitrifying bacteria and oxygen electrode.
In the motor train unit operational process, single-chip microcomputer in the anti-pollution flashover device of motor train unit train receives the signal of biology sensor transmission and carries out analysis and Control, specifically, the nitrite concentration lowest detection of this biology sensor is limited to 0.01mmol/L, when nitrite concentration is lower than 0.59mmol/L, the electric current that biology sensor produces is directly proportional with the concentration of nitrite, be the content of oxynitrides in the content reflection atmosphere of nitrite, statistics causes the relevant air data of train generation pollution flashover, analyzes the critical value of pollution flashover.The critical value of setting pollution flashover is 0.42mmol/L, if the content that biology sensor detects surpasses the critical value that sets pollution flashover, be that the real-time air quality of effective perception is poor, single-chip microcomputer receives signal and controls warning circuit and report to the police, and at once avoids the generation of pollution flashover accident by the working voltage that changes motor train unit train; If give the biology sensor detected value in setting the critical value range of pollution flashover, the single-chip microcomputer alert signal of not transmitting messages, motor train unit train will keep normal operation.
Claims (6)
1. motor train unit train is prevented the pollution flashover device, it is characterized in that: be that a kind of sensor technology and Single-chip Controlling utilized realizes preventing that the device of pollution flashover phenomenon from appearring in motor train unit train in the high-speed cruising process, be installed in the power transformation interval of motor-car traction substation of frequent generation haze weather, mainly by the test section, control section and the part of reporting to the police connect and compose successively, and by the i.e. stabilized voltage supply power supply of an output 5V DC voltage of power module, wherein the test section is biology sensor, control section comprises single-chip microcomputer and peripheral circuit thereof, the part of reporting to the police is buzzer alarm circuit, the signal output part of biology sensor is wired to the P1.1 pin of singlechip chip, the P1.0 pin of singlechip chip is wired to buzzer alarm circuit, and stabilized voltage supply is given the test section simultaneously, control section and the part of reporting to the police provide the 5V DC voltage.
2. said motor train unit train is prevented the pollution flashover device according to claim 1, described biology sensor makes up three parts by porous gas permeable membrane, using immobilized nitrifying bacteria and oxygen electrode and is formed by connecting in turn, gas to be measured enters by the porous gas permeable membrane, cooperates the detection of finishing gas nitrite to be measured by using immobilized nitrifying bacteria and oxygen electrode combination.
3. said motor train unit train is prevented the pollution flashover device according to claim 1, and the nitrite concentration lowest detection of described biology sensor is limited to 0.01mmol/L, and is indirectly learnt the content of oxynitrides in the atmosphere by the content of detected nitrite.
4. said motor train unit train is prevented the pollution flashover device according to claim 1, and described single-chip microcomputer adopts the AT89C51 chip, and its peripheral circuit comprises known crystal oscillator and the reset circuit of single-chip microcomputer work indispensability.
5. said motor train unit train is prevented the pollution flashover device according to claim 1, described buzzer alarm circuit is that resistance, triode and the hummer of 1K consists of by phase inverter, resistance value mainly, phase inverter contact resistance value is an end of the resistance of 1K, the base stage of another termination triode of this resistance, the grounded emitter of this triode, collector connects the negative pole of hummer, and an end of the positive polarity of this hummer connects the 5V power supply.
6. said motor train unit train is prevented the pollution flashover device according to claim 1, the program circuit of described single-chip microcomputer is: does beginning → program initialization → haze content exceed standard?
Continue to detect;
Warning → termination routine.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108766686A (en) * | 2018-06-05 | 2018-11-06 | 瑞安复合材料(深圳)有限公司 | A kind of low sheet resistance flexible insulating material and preparation method thereof |
| CN108888965A (en) * | 2018-07-09 | 2018-11-27 | 王昆 | Cloud computing formula dynamic state of parameters acquisition platform |
| CN109297417A (en) * | 2018-08-30 | 2019-02-01 | 蒋丽英 | Intelligent track train height adjustment system |
| CN113353150A (en) * | 2021-06-29 | 2021-09-07 | 三一重机有限公司 | Chassis with limiting part fracture damage prevention function, method and operation machine |
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| CN103324127B (en) | 2016-04-20 |
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