CN102465502B - Safety device in railway turnout snow melting equipment - Google Patents
Safety device in railway turnout snow melting equipment Download PDFInfo
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- CN102465502B CN102465502B CN 201010538339 CN201010538339A CN102465502B CN 102465502 B CN102465502 B CN 102465502B CN 201010538339 CN201010538339 CN 201010538339 CN 201010538339 A CN201010538339 A CN 201010538339A CN 102465502 B CN102465502 B CN 102465502B
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Abstract
The invention discloses a safety device in railway turnout snow melting equipment, relating to the railway turnout snow melting equipment. According to the safety device, two ends of a snow-melting heating element (H) are respectively connected with a dotted terminal of a first primary coil (L2) and a synonym terminal of a second primary coil (L3), and the synonym terminal of the first primary coil and the dotted terminal of the second primary coil are respectively connected with a 220V alternating-current power supply. One end of a secondary coil (L4) is connected with a positive electrode of a diode (D1), a negative electrode of the diode is connected with a negative electrode of a voltage-stabilizing diode (D3) through an adjustable resistor (R2), a positive electrode of the voltage-stabilizing diode is connected with a positive electrode of a light-emitting diode (D2), and a negative electrode of the light-emitting diode is connected with the other end of the secondary coil; an inductor (L1) is connected with a first capacitor (C1) in series and is connected to the other end of the secondary coil and the positive electrode of the diode in parallel; and a second capacitor (C2) and a resistor (R1) are respectively connected to the other end of the secondary coil and the negative electrode of the diode in parallel. According to the invention, the interference to rail signals is prevented after the snow melting equipment is in fault.
Description
Technical field
The present invention relates to a kind of safety device of railway turnout snow melting equipment, be applied to severe cold area railway and high-speed railway switch electric heating snow melting equipment.
Background technology
Climate in china divides five zones: severe cold area, cold district, Xia Redong cryogenic region, hot summer and warm winter region and temperate zone.China's severe cold area normal coldest month average temperature is lower than-10 ℃, and some areas minimum temperature can reach-40 ℃ of left and right, and winter climate is cold, snowfall is many, general wind-force is larger.In severe cold area Winter Snow weather, if the railway switch snow removing not in time, will be in track switch accumulated snow and freezing, cause between point tongue tip and stock rail not closely connected, can not locking or clearing signal, directly affect normally carrying out of station receiving and dispatching trains operation and shunting service, when serious, even cause railway transportation stop up or interrupt.
Existing device for melting snow is after fault, power supply can cut off automatically, but the physical circuit of fault can provide possible loop for track circuit, track signal is transmitted by loop, may make relay energized, cause signal to show mistake, to train operating safety, caused impact, reduced the efficiency of railway operation.
Summary of the invention
Technical problem to be solved by this invention is: at heavy duty and the high-speed railway switch of application electric heating snow melting equipment, adopt inductance and relay, realize a kind of detection and buffer circuit, it is met after fault noiseless to track signal, and whether can automatically detect this device working properly.Simultaneously, can also reduce equipment complexity, reduce costs.
Technical scheme of the present invention is:
Safety device in railway turnout snow melting equipment, the transformer of this device is established the first primary coil and the second primary coil, the two ends of snow melt heating element are connected with the Same Name of Ends of the first primary coil and the different name end of the second primary coil respectively, the different name end of the first primary coil and the Same Name of Ends of the second primary coil join with the 220V AC power respectively, give the power supply of snow melt heating element.
One end of secondary coil is connected with the positive pole of diode, and the negative pole of diode connects the negative pole of Zener diode through adjustable resistance, the positive pole of the anodal sending and receiving optical diode of Zener diode, and the negative pole of light emitting diode connects the other end of secondary coil.
Inductance and the first capacitance series, be connected in parallel on the positive pole of the other end of secondary coil and diode.
The second electric capacity and resistance are connected in parallel respectively on the negative pole of the other end of secondary coil and diode.
The turn ratio of described the first primary coil and secondary coil is 1: 11; The turn ratio of the second primary coil and secondary coil is 1: 11.
Described the first electric capacity is 20 μ F～30 μ F, and the value of inductance is
ω=2 π f wherein, f is ac frequency.
The invention has the beneficial effects as follows:
When cisco unity malfunction appears opening circuit in circuit, this device presents high-impedance state to the signal of ZPW-2000 track circuit frequency band 1700Hz～2600Hz, because high-impedance state makes the signal attenuation of ZPW-2000, does not affect the use of track circuit.Simultaneously, after deamplification seals in the first and second primary coils, the voltage of the first and second primary coils raises, thereby the voltage of rising secondary coil makes lumination of light emitting diode, with indication fault.
The accompanying drawing explanation
Fig. 1 is the safety device schematic diagram in railway turnout snow melting equipment.
The specific embodiment
Below in conjunction with accompanying drawing, this device is further described.
Safety device in railway turnout snow melting equipment, the transformer of this device is established the first primary coil L2 and the second primary coil L3, the two ends of snow melt heating element H are connected with the different name end of the second primary coil L3 with the Same Name of Ends of the first primary coil L2 respectively, the different name end of the first primary coil L2 and the Same Name of Ends of the second primary coil L3 join with the 220V AC power respectively, give snow melt heating element H power supply.
The end of secondary coil L4 is connected with the positive pole of diode D1, and the negative pole of diode D1 connects the negative pole of voltage-stabiliser tube D3 through adjustable resistance R2, the positive pole of the anodal sending and receiving optical diode D2 of voltage-stabiliser tube D3, and the negative pole of light emitting diode D2 connects the other end of secondary coil L4.
Inductance L 1 is connected in series with the first capacitor C 1, is connected in parallel on the positive pole of the other end of secondary coil L4 and diode D1.
The second capacitor C 2 and resistance R 1 are connected in parallel respectively on the negative pole of the other end of secondary coil L4 and diode D1.
The turn ratio of the first primary coil L2 and secondary coil L4 is 1: 11; The turn ratio of the second primary coil L3 and secondary coil L4 is 1: 11.
The first primary coil L2 and the second primary coil L3 are 75 circles, and secondary coil L4 is 825 circles.
Be 75 circles at the first primary coil L2 and the second primary coil L3, secondary coil L4 is 825 circles, and in designed device, any amount that the capacitance of the first capacitor C 1 is got between 20 μ F～30 μ F all can realize the function of this device, be that turn ratio is 1: 11 o'clock, electric capacity is same span.Inductance
ω=2 π f wherein, f is ac frequency.
This device is not less than 56.22 Ω to the impedance of track circuit.
The series resonance unit that inductance L 1 and the first capacitor C 1 form and 50Hz coupling, make the voltage minimizing consumed on line the first and second primary coil L2 and L3 in the time of normal operation.First capacitor C 1 of the present embodiment is selected 30 μ F, according to formula
show that inductance L 1 is for 337.7mH, actual inductance is because inductance is larger than 337.7mH with the mutual inductance effect of coil, and for the not impact of the 1700Hz that hinders track circuit～2600Hz signal, just the energy consumption under normal operation increases to some extent, and pressure drop is in 1% left and right.This device calculated is 33.2 Ω for the impedance of 1700Hz, for the impedance of 2600Hz, is 45.57 Ω, for the 1700Hz impedance, is in fact 45.13 Ω～56.22 Ω, for the 2600Hz impedance, is 60.74 Ω～84.21 Ω.
Diode D1 is for rectification, AC signal is transformed into to direct current signal, the second capacitor C 2 in parallel plays the effect identical with diode D1, make the output waveform more smooth, adjustable resistance R2 is for regulation voltage, Zener diode D3 guarantees the voltage of adjustable resistance R2 end, and when adjustable resistance R2 terminal voltage surpasses the voltage-stabiliser tube burning voltage, Zener diode punctures and makes light emitting diode D2 luminous.Wherein Zener diode D3 is the 5V voltage stabilizing, and the second capacitor C 2 is 1500 μ F, and adjustable resistance R2 adopts the slide rheostat of 2M Ω.
When the circuit of this device breaks down, if the second capacitor C 2 opens circuit, rectification effect, not as normal condition, causes the phenomenon of light emitting diode D2 flicker.
When the breaking down of series resonance unit that inductance L 1 and the first capacitor C 1 form, high-impedance state disappears, and makes the voltage at secondary coil L4 two ends raise, and light emitting diode D2 is luminous, thereby has realized the fault self-checking of this device.
Claims (1)
1. the safety device in railway turnout snow melting equipment, it is characterized in that: the transformer of this device is established the first primary coil (L2) and the second primary coil (L3), the two ends of snow melt heating element (H) are connected with the different name end of the second primary coil (L3) with the Same Name of Ends of the first primary coil (L2) respectively, the Same Name of Ends of the different name end of the first primary coil (L2) and the second primary coil (L3) joins with the 220V AC power respectively, gives snow melt heating element (H) power supply;
One end of secondary coil (L4) is connected with the positive pole of diode (D1), the negative pole of diode (D1) connects the negative pole of Zener diode (D3) through adjustable resistance (R2), the positive pole of the anodal sending and receiving optical diode (D2) of Zener diode (D3), the negative pole of light emitting diode (D2) connects the other end of secondary coil (L4);
Inductance (L1) is connected in series with the first electric capacity (C1), is connected in parallel on the positive pole of the other end of secondary coil (L4) and diode (D1);
The second electric capacity (C2) and resistance (R1) are connected in parallel respectively on the negative pole of the other end of secondary coil (L4) and diode (D1).
2. the safety device in railway turnout snow melting equipment according to claim 1 is characterised in that:
The turn ratio of described the first primary coil (L2) and secondary coil (L4) is 1:11; The turn ratio of the second primary coil (L3) and secondary coil (L4) is 1:11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010538339 CN102465502B (en) | 2010-11-09 | 2010-11-09 | Safety device in railway turnout snow melting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010538339 CN102465502B (en) | 2010-11-09 | 2010-11-09 | Safety device in railway turnout snow melting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102465502A CN102465502A (en) | 2012-05-23 |
| CN102465502B true CN102465502B (en) | 2013-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010538339 Expired - Fee Related CN102465502B (en) | 2010-11-09 | 2010-11-09 | Safety device in railway turnout snow melting equipment |
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| Country | Link |
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| CN (1) | CN102465502B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109204071A (en) * | 2018-11-13 | 2019-01-15 | 中车株洲电力机车有限公司 | A kind of rail vehicle electrical power contact rail heater circuit |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4676224A (en) * | 1984-04-19 | 1987-06-30 | Kabushiki Kaisha Meidensha | Heating and melting apparatus for melting a substance to be melted |
| CN2233939Y (en) * | 1995-12-18 | 1996-08-28 | 关艳堂 | Electric heating snow remover for railway switch |
| JP2001115402A (en) * | 1999-10-19 | 2001-04-24 | Matsushita Electric Ind Co Ltd | Snow melting device for rail switch |
| CN2410798Y (en) * | 2000-02-28 | 2000-12-13 | 山东小鸭集团热水器有限公司 | Automatic power-off alarm device for fast heating type electric water heater |
| CN2934328Y (en) * | 2006-08-14 | 2007-08-15 | 张颖 | Railroad switch automatic snow removing device |
| CN201128848Y (en) * | 2007-11-15 | 2008-10-08 | 孙传斌 | Railroad switch de-icing electric heater |
| RU97386U1 (en) * | 2010-04-22 | 2010-09-10 | Общество с ограниченной ответственностью "КТН" (ООО "КТН") | DEVICE FOR CLEANING THE ARROW TRANSFER FROM SNOW AND ICE BY ELECTRIC HEATING "SEIT-04" |
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2010
- 2010-11-09 CN CN 201010538339 patent/CN102465502B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN102465502A (en) | 2012-05-23 |
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Effective date of registration: 20170602 Address after: 065500 Yongding Road, Guan County, Langfang City, Hebei Province Patentee after: Guan Tonghao Railway Equipment Co. Ltd. Address before: 100044 Beijing city Haidian District Xizhimen Shangyuan Village No. 3 Patentee before: Beijing Jiaotong University |
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Granted publication date: 20131218 Termination date: 20181109 |
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| CF01 | Termination of patent right due to non-payment of annual fee |