CN102465502A - Safety device in railway turnout snow melting equipment - Google Patents
Safety device in railway turnout snow melting equipment Download PDFInfo
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- CN102465502A CN102465502A CN2010105383399A CN201010538339A CN102465502A CN 102465502 A CN102465502 A CN 102465502A CN 2010105383399 A CN2010105383399 A CN 2010105383399A CN 201010538339 A CN201010538339 A CN 201010538339A CN 102465502 A CN102465502 A CN 102465502A
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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 switch snow melt equipment, be applied to severe cold area railway and high-speed railway switch electric heating snow melt 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 gentle area.China's severe cold area normal coldest month average temperature is lower than-10 ℃, and some areas minimum temperature can reach about-40 ℃, and winter climate is cold, snowfall is many, general wind-force is bigger.In severe cold area snowfall in winter weather; If the railway switch snow removing is untimely; Will be in track switch accumulated snow with freeze, cause between point tongue tip and stock rail not closely connected, can not locking or clearing signal; Directly influence normally carrying out of station train sending and receiving operation and shunting service, when serious even cause railway transportation obstruction or interruption.
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, and track signal transmits through the loop; Possibly make relay energized; Cause signal to show mistake, caused influence, reduced the efficient of railway operation to train operating safety.
Summary of the invention
Technical problem to be solved by this invention is: at heavy duty and the high-speed railway switch of using electric heating snow melt equipment; Adopt inductance and relay; Realize a kind of detection and buffer circuit, it is noiseless to track signal that it is satisfied after the fault, and whether can detect this device automatically in proper working order.Simultaneously, can also reduce equipment complexity, reduce cost.
Technical scheme of the present invention is:
Safety device in the railway switch snow melt equipment; The transformer of this device is established first primary coil and second primary coil; The two ends of snow melt heating element are connected with the end of the same name of first primary coil and the different name end of second primary coil respectively; The different name end of first primary coil and the end of the same name of 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.
The inductance and first capacitance series are connected in parallel on the positive pole of the other end and diode of secondary coil.
Second electric capacity and resistance are connected in parallel respectively on the negative pole of the other end and diode of secondary coil.
The turn ratio of described first primary coil and secondary coil is 1: 11; The turn ratio of second primary coil and secondary coil is 1: 11.
Described first electric capacity is 20 μ F～30 μ F; The value of inductance is
ω=2 π f wherein, f is an ac frequency.
The invention has the beneficial effects as follows:
When cisco unity malfunction appearred opening circuit in circuit, this device presented 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, did not influence the use of track circuit.Simultaneously, after deamplification sealed in first and second primary coils, the voltage of first and second primary coils raise, thereby the voltage of rising secondary coil makes lumination of light emitting diode, with indication fault.
Description of drawings
Fig. 1 is the safety device schematic diagram in the railway switch snow melt equipment.
The specific embodiment
Below in conjunction with accompanying drawing this device is further specified.
Safety device in the railway switch snow melt 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 end of the same name of the first primary coil L2 and the different name end of the second primary coil L3 respectively; The end of the same name 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.
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 first capacitor C 1, is connected in parallel on the positive pole of the other end and diode D1 of secondary coil L4.
Second capacitor C 2 and resistance R 1 are connected in parallel respectively on the negative pole of the other end and diode D1 of secondary coil L4.
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 the device that is designed, the capacitance of first capacitor C 1 is got the function that any amount between 20 μ F～30 μ F all can realize this device; Be that turn ratio is 1: 11 o'clock, electric capacity is same span.Inductance
is ω=2 π f wherein, and f is an ac frequency.
This device is not less than 56.22 Ω to the impedance of track circuit.
Series resonance unit that the inductance L 1 and first capacitor C 1 are formed and 50Hz coupling make the voltage minimizing that in the time of operate as normal, consumes on the line first and second primary coil L2 and L3.First capacitor C 1 of present embodiment is selected 30 μ F; Draw inductance L 1 according to formula
and be 337.7mH; Actual inductance is because inductance is bigger than 337.7mH with the mutual inductance effect of coil; For not influence of the 1700Hz～2600Hz signal that hinders track circuit; Just the energy consumption under the operate as normal increases to some extent, and pressure drop is about 1%.This device that calculates is 33.2 Ω for the impedance of 1700Hz, is 45.57 Ω for the impedance of 2600Hz, is 45.13 Ω～56.22 Ω for the 1700Hz impedance in fact, is 60.74 Ω～84.21 Ω for the 2600Hz impedance.
Diode D1 is used for rectification; AC signal is transformed into direct current signal, and second capacitor C 2 of parallel connection plays the effect identical with diode D1, makes the output waveform more smooth; Adjustable resistance R2 is used for regulation voltage; Zener diode D3 guarantees the voltage that adjustable resistance R2 is terminal, and when adjustable resistance R2 terminal voltage surpassed the voltage-stabiliser tube burning voltage, Zener diode punctures made that light emitting diode D2 is luminous.Wherein Zener diode D3 is the 5V voltage stabilizing, and 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 broke down, if second capacitor C 2 opens circuit, rectification effect caused the phenomenon of light emitting diode D2 flicker not as normal condition.
When the breaking down of series resonance unit that inductance L 1 and first capacitor C 1 are formed, 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 (3)
1. the safety device in the railway switch snow melt equipment; It is characterized in that: the transformer of this device is established first primary coil (L2) and second primary coil (L3); The two ends of snow melt heating element (H) are connected with the end of the same name of first primary coil (L2) and the different name end of second primary coil (L3) respectively; The end of the same name of the different name end of first primary coil (L2) and 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 first electric capacity (C1), is connected in parallel on the positive pole of the other end and diode (D1) of secondary coil (L4);
Second electric capacity (C2) and resistance (R1) are connected in parallel respectively on the negative pole of the other end and diode (D1) of secondary coil (L4).
2. the safety device in the railway switch snow melt equipment according to claim 1 is characterised in that:
The turn ratio of described first primary coil (L2) and secondary coil (L4) is 1: 11; The turn ratio of second primary coil (L3) and secondary coil (L4) is 1: 11.
3. the safety device in the railway switch snow melt equipment according to claim 1; Be characterised in that: described first electric capacity (C1) is 20 μ F～30 μ F; The value of inductance (L1) is
ω=2 π f wherein, f is an ac frequency.
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 |
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| CN102465502A true CN102465502A (en) | 2012-05-23 |
| CN102465502B CN102465502B (en) | 2013-12-18 |
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| 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) |
Cited By (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 |
Citations (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 |
| 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 |
| EP1227186A1 (en) * | 1999-10-19 | 2002-07-31 | Matsushita Electric Industrial Co., Ltd. | Line switch part snow melting device |
| 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" |
-
2010
- 2010-11-09 CN CN 201010538339 patent/CN102465502B/en not_active Expired - Fee Related
Patent Citations (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 |
| EP1227186A1 (en) * | 1999-10-19 | 2002-07-31 | Matsushita Electric Industrial Co., Ltd. | Line switch part snow melting device |
| 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" |
Cited By (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 |
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| CN102465502B (en) | 2013-12-18 |
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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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