CN101695906B - Automatic switch-on and switch-off device of overhead line of electric locomotive - Google Patents
Automatic switch-on and switch-off device of overhead line of electric locomotive Download PDFInfo
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- CN101695906B CN101695906B CN2009101862512A CN200910186251A CN101695906B CN 101695906 B CN101695906 B CN 101695906B CN 2009101862512 A CN2009101862512 A CN 2009101862512A CN 200910186251 A CN200910186251 A CN 200910186251A CN 101695906 B CN101695906 B CN 101695906B
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Abstract
The invention relates to an automatic switch-on and switch-off device of an overhead line of an electric locomotive, by which the electric locomotive is automatically switched on when a pantograph touches a power supply overhead line and is automatically switched off when the pantograph leaves the power supply overhead line. The automatic switch-on and switch-off device comprises a voltage detection unit, a current detection unit, an overcurrent detection unit, a main switch, a control unit, a display alarm unit and a control power supply unit, wherein the current detection unit, the overcurrent detection unit and the main switch are connected in series in a direct current major loop; the voltage detection unit is connected between the direct current major loop and the ground; the output ends of an overvoltage detection unit, the current detection unit and the overcurrent detection unit are all connected with the input end of the control unit for program control; the output end of the control unit is connected with the main switch and the display alarm unit; and the control power supply unit provides power for the control unit. The invention ensures that the power supply of low overhead lines of drift laneways underground is safe and reliable and replaces a traditional power supply mode of manual power failure and power transmission.
Description
Technical field
The present invention relates to a kind of electric supply installation, particularly a kind of mine Underground Locomotive Carrier stringing is energising and breaker device automatically.
Background technology
At present, trolley locomotive is down-hole, a mine main haulage conveyor tool, and it adopts dc electric power supply, good speed adjustment features, reliable operation.But the stringing in the underworkings is touched easily, causes safety misadventure; Particularly in the drift, down-hole, because the existence of head-room, width limitations and drawing chute, electric locomotive stringing height generally is difficult to surpass 1.8 meters, causes great security threat to the site operation personnel.For guaranteeing safety, the stringing in these tunnels mostly adopts and manually stops to send electricity, and is very inconvenient, and forgets power failure easily; What also have does not establish stringing, adopts the people to try hard to recommend mine car, and labour intensity is big, and efficient is low.
Utility model patent CN2702879Y discloses a kind of electric locomotive overhead-line self-supply unit, need collector bow and sensor be set at the electric locomotive stringing section of mutual insulating.
Summary of the invention
A kind of electric locomotive stringing simple in structure energising and breaker device have automatically been the purpose of this invention is to provide, energising automatically immediately when the electric locomotive pantograph is touched this device mouth stringing, outage automatically subsequently when pantograph is left this device mouth stringing.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of electric locomotive stringing is energising and breaker device automatically, comprises stringing, direct current major loop, voltage detection unit, current detecting unit, excessive current detection unit, main switch, the programme controlled control unit of employing, display alarm unit and control power subsystem unit.On the direct current major loop, be connected in series current detecting unit, excessive current detection unit, main switch, between the input end of direct current major loop and ground, be connected in series voltage detection unit; The mouth of voltage detection unit, current detecting unit, excessive current detection unit is connected with the input end of control unit, and the mouth of control unit is connected with main switch and display alarm unit respectively, and the control power subsystem unit is connected with control unit.
Described voltage detection unit is made up of voltage relay KV, resistance R 1, R2 and R3, current detecting unit is made up of current relay KC1, excessive current detection unit is made up of over current relay KC2, main switch is made up of contactless switch CJ, control unit is by adopting programme controlled PLC to form, the control power subsystem unit is made up of Switching Power Supply G, and the display alarm unit is made up of indicator lamp HL1, HL2 and buzzer phone HA.
The coil of described contactless switch CJ be connected between direct current major loop input end and the ground after the open contact zj1 of intermediate relay ZJ connects; Resistance R 1, R2 and R3 are composed in series bleeder circuit, are connected between direct current major loop input end and the ground, and voltage relay KV coil is connected on the two ends of series connected R2 and R 3; Contactless switch CJ main contact cj1 is serially connected in the direct current major loop, and auxiliary normally closed contact cj2 one terminates between R3 and the R2, and the other end is connected on the mouth of cj1; Current relay KC1 and KC2 primary winding are serially connected in the mouth of cj1 and cj2, and the mouth of current relay KC2 coil is connected with stringing; Described control unit PLC power end connects the power end of Switching Power Supply G respectively; The input end of PLC is connected with the end of open contact kv, contactless switch CJ auxiliary open contact cj3, the button open contact sb of open contact kc2, the voltage relay KV of open contact kc1, the over current relay KC2 of current relay KC1 respectively, and the other end of kc1, kc2, kv, cj3, sb is connected with the input end COM of PLC; The PLC mouth is connected with an end of buzzer phone HA, indicator lamp HL1, indicator lamp HL2, intermediate relay ZJ coil respectively, the other end of buzzer phone HA, indicator lamp HL1, indicator lamp HL2, intermediate relay ZJ coil is connected with the power end of Switching Power Supply G, and mouth COM is connected with another power end of the same group of power supply of Switching Power Supply G.
When the electric locomotive pantograph is touched this device mouth stringing, voltage detection unit detects the variation of voltage, output a control signal to control unit, control unit passes through routine processes, the control main switch closes a floodgate, direct current major loop and mouth stringing are connected, the electric locomotive normal operation, and display unit shows combined floodgate simultaneously.If overload of electric locomotive emerged in operation or short trouble after the excess current unit detects fault current, output a control signal to control unit, control unit control main switch separating brake is cut off the electricity supply.
When the electric locomotive pantograph was left this device mouth stringing, electric locomotive was out of service, and current detecting unit detects less than electric current, thereby output a control signal to control unit, control unit is delayed time and is controlled the main switch separating brake after several seconds by routine processes, and the mouth stringing has a power failure.If at this moment this mouth stringing does not have a power failure, then display unit shows fault, reminds the operating personal handling failure.
Beneficial effect of the present invention is:
1. the underworkings of underground mine power supply stringing can be divided into the short stringing of some independently-powered sections, particularly drift, down-hole, is connected with the mouth C of this device respectively; Energising automatically immediately when the electric locomotive pantograph is touched this device mouth stringing, outage automatically subsequently when pantograph is left this device mouth stringing; Guarantee the underworkings stringing, particularly the power supply safety of the short stringing in drift is reliable, substitutes traditional short stringing is adopted and manually stops to send electric power supply mode.
2. outage automatically subsequently prevented that not only touching stringing causes safety misadventure when the electric locomotive pantograph was left this device mouth stringing, and can avoid because of the long-term charged leakage loss that produces of stringing, economize on electricity consumption reduction.
3. the present invention is simple in structure, with low cost, also has overload, short-circuit protection and fault display alarm function, can be the Underground Locomotive Carrier stringing realization automatic safe power supply that non-coal mine and colliery do not have explosion hazards such as gas.
Description of drawings
Fig. 1 is a principle of the invention block scheme.
Fig. 2 is a DC loop electrical schematic diagram of the present invention.
Fig. 3 is a control loop electrical schematic diagram of the present invention.
The specific embodiment
Embodiment is as Figure 1-3: a kind of electric locomotive stringing is energising and breaker device automatically, comprises stringing 2, direct current major loop 1, voltage detection unit 3, current detecting unit 4, excessive current detection unit 5, main switch 6, adopts programme controlled control unit 7, display alarm unit 8 and control power subsystem unit 9.Serial connection current detecting unit 4, excessive current detection unit 5, main switch 6 on direct current major loop 1 are connected in series voltage detection unit 3 between the input end of direct current major loop 1 and ground; The mouth of voltage detection unit 3, current detecting unit 4, excessive current detection unit 5 is connected with the input end of control unit 7, and the mouth of control unit 7 is connected with main switch 6 and display alarm unit 8 respectively, and control power subsystem unit 9 is connected with control unit 7.
Direct supply voltage is DC270V, and the control power line voltage is AC36V.Voltage detection unit 3 is made up of voltage relay KV, resistance R 1, R2 and R 3, and the KV model is JCDY-2A/DC48V, and the R1 model is RX20-900 Ω/100W, and R2 and R3 model are RX20-100 Ω/25W.Current detecting unit 4 is made up of current relay KC1, and the KC1 model is JL15-60/11.Excessive current detection unit 5 is made up of over current relay KC2, and the KC2 model is JL15-150/11.Main switch 6 is made up of contactless switch CJ, and the CJ model is CZ0-150/10,440V/270V.Control unit 7 is made up of PLC, and model is FX1S-20MR/DC24V.Control power subsystem unit 9 is made up of Switching Power Supply G, and model is AC36V-DC24V/300W.Display alarm unit 8 is made up of indicator lamp HL1, HL2 and buzzer phone HA, and HL1 and HL2 model are NXD-215/DC24V, and the HA model is BJ-1/DC24V.ZJ is an intermediate relay, and model is JDZ1-44/AC36V.
K is a disconnector, and an end connects the direct supply inlet wire, and the other end connects the input end of this device direct current major loop 1, and the mouth of this device direct current major loop 1 connects stringing 2.The coil of contactless switch CJ be connected between direct current major loop 1 input end and the ground after the open contact zj1 of intermediate relay ZJ connects; Resistance R 1, R2 and R 3 are composed in series bleeder circuit, are connected between direct current major loop 1 input end and the ground, and voltage relay KV coil is connected on the two ends of series connected R2 and R3; Contactless switch CJ main contact cj1 is serially connected in the direct current major loop 1, and auxiliary normally closed contact cj2 one terminates between R3 and the R2, and the other end is connected on the mouth of cj1; Current relay KC1 and KC2 primary winding are serially connected in the mouth of cj1 and cj2, and the mouth of current relay KC2 coil is connected with stringing (2); Control unit PLC power supply-24V ,+24V end connect respectively Switching Power Supply G-24V ,+the 24V end; The input end X0 of PLC is connected with current relay open contact kc1 one end, X1 is connected with over current relay open contact kc2 one end, X2 is connected with voltage relay open contact kv one end, X3 is connected with button open contact sb one end, X4 is connected with auxiliary open contact cj3 one end of contactless switch, and the other end of kc1, kc2, kv, cj3, sb is connected with the input end COM of PLC; PLC mouth Y4 is connected with buzzer phone HA one end, Y5 is connected with indicator lamp HL1 one end, Y6 is connected with indicator lamp HL2 one end, Y1 is connected with coil one end of intermediate relay ZJ, HA, HL1, the HL2 other end and Switching Power Supply G+the 24V end is connected, and the ZJ coil other end is held with the L of Switching Power Supply AC36 and is connected.
Principle of work of the present invention is: 1. when the pantograph 11 of electric locomotive 10 did not contact this device mouth stringing 2, after+270V voltage passed through R1, R2, R3 dividing potential drop, the B point voltage was+24V, so voltage is+24V on the stringing 2.
2. when the pantograph 11 of electric locomotive 10 is touched stringing 2, because of the direct current resistance of electric locomotive 10 is little and in parallel with R3, so the B point voltage reduces, and the A point voltage also reduces; When the A point voltage drops to the KV setting valve, KV action, open contact kv closure; The X2 closure of PLC, by the PLC programming control, the Y1 closure, the intermediate relay ZJ coil gets electric, the open contact zj1 closure of ZJ; The CJ coil gets electric, often opens main contact cj1 closure, connects direct current major loop 1; Normally closed auxiliary contact cj2 disconnects, disconnection+24V loop, and the Y5 closure of while PLC, indicator lamp HL1 is bright.Because direct current major loop 1 is connected, voltage is+270V on the stringing 2, electric locomotive 10 normal operation; At this moment KC1 detects working current and moves, the open contact kc1 closure of KC1, and the X0 closure of PLC, thus keep "on" position.If electric locomotive 10 is in operation when overload or short circuit phenomenon occurring, over current relay KC2 action, the open contact kc2 closure of KC2; The X1 closure of PLC disconnects by routine processes Y1, the intermediate relay ZJ coil losing electricity, and the open contact zj1 of ZJ disconnects, the CJ coil losing electricity, CJ main contact cj1 disconnects, and disconnects direct current major loop 1; The Y6 closure of while PLC, HL2 is bright for the indicator lamp lamp, and overload or short trouble appear in indication; After fault handling, press reset button SB, the X3 closure of PLC, PLC removes faulty condition, and device can work on.
3. when electric locomotive 10 pantographs 11 separating device mouth stringings 2, current relay KC1 detects and returns less than electric current, open contact kc1 disconnects, the X0 of PLC disconnects, and time-delay back Y1 disconnects the ZJ coil losing electricity, the open contact zj1 of ZJ disconnects, the CJ coil losing electricity, main contact cj1 disconnects, and disconnects the direct current major loop; Secondary contact cj2 closure, stringing 2 is band+24V voltage again, prepares for close a floodgate next time.CJ does not disconnect if KC1 returns the back, then by auxiliary normal battle cj3 turn back to the X4 of PLC, by the PLC routine processes, Y4, Y5 closure, buzzer phone HA reports to the police, indicator lamp HL1 flicker reminds the operating personal device fault to occur, is badly in need of maintenance.
Claims (1)
1. an electric locomotive stringing is switched on and breaker device automatically, comprise stringing (2), it is characterized in that: also comprise direct current major loop (1), voltage detection unit (3), current detecting unit (4), excessive current detection unit (5), main switch (6), adopt programme controlled control unit (7), display alarm unit (8) and control power subsystem unit (9); Go up serial connection current detecting unit (4), excessive current detection unit (5), main switch (6) at direct current major loop (1), between the input end of direct current major loop (1) and ground, be connected in series voltage detection unit (3); The mouth of voltage detection unit (3), current detecting unit (4), excessive current detection unit (5) is connected with the input end of control unit (7), the mouth of control unit (7) is connected with main switch (6) and display alarm unit (8) respectively, and control power subsystem unit (9) is connected with control unit (7);
Described voltage detection unit (3) is made up of voltage relay KV, resistance R 1, R2 and R3, current detecting unit (4) is made up of current relay KC1, excessive current detection unit (5) is made up of over current relay KC2, main switch (6) is made up of contactless switch CJ, control unit (7) is by adopting programme controlled PLC to form, control power subsystem unit (9) is made up of Switching Power Supply G, and display alarm unit (8) are made up of indicator lamp HL1, HL2 and buzzer phone HA;
The coil of described contactless switch CJ be connected between direct current major loop (1) input end and the ground after the open contact zj1 of intermediate relay ZJ connects; Resistance R 1, R2 and R3 are composed in series bleeder circuit, are connected between direct current major loop (1) input end and the ground, and voltage relay KV coil is connected on the two ends of series connected R2 and R3; Contactless switch CJ main contact cj1 is serially connected in the direct current major loop (1), and auxiliary normally closed contact cj2 one terminates between R3 and the R2, and the other end is connected on the mouth of cj1; Current relay KC1 and KC2 primary winding are serially connected in the mouth of cj1 and cj2, and the mouth of current relay KC2 coil is connected with stringing (2); Described control unit PLC power end connects the power end of Switching Power Supply G respectively; The input end of PLC is connected with the end of open contact kv, contactless switch CJ auxiliary open contact cj3, the button open contact sb of open contact kc2, the voltage relay KV of open contact kc1, the over current relay KC2 of current relay KC1 respectively, and the other end of kc1, kc2, kv, cj3, sb is connected with the input end COM of PLC; The PLC mouth is connected with an end of buzzer phone HA, indicator lamp HL1, indicator lamp HL2, intermediate relay ZJ coil respectively, the other end of buzzer phone HA, indicator lamp HL1, indicator lamp HL2, intermediate relay ZJ coil is connected with the power end of Switching Power Supply G, and mouth COM is connected with another power end of the same group of power supply of Switching Power Supply G.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101862512A CN101695906B (en) | 2009-10-16 | 2009-10-16 | Automatic switch-on and switch-off device of overhead line of electric locomotive |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101862512A CN101695906B (en) | 2009-10-16 | 2009-10-16 | Automatic switch-on and switch-off device of overhead line of electric locomotive |
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| CN101695906A CN101695906A (en) | 2010-04-21 |
| CN101695906B true CN101695906B (en) | 2011-10-12 |
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| CN2009101862512A Expired - Fee Related CN101695906B (en) | 2009-10-16 | 2009-10-16 | Automatic switch-on and switch-off device of overhead line of electric locomotive |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102035195B (en) * | 2010-08-31 | 2014-03-12 | 中国北车股份有限公司大连电力牵引研发中心 | Automatic ground protective device for light rail garage power and control method thereof |
| CN102385325B (en) * | 2011-09-24 | 2013-04-24 | 核工业烟台同兴实业有限公司 | Subsection intelligent controller for underground electric locomotive string |
| CN103248006B (en) * | 2013-05-13 | 2016-08-10 | 马钢(集团)控股有限公司 | The speed-sensitive switch automatic detection protection device of continuous current locomotive |
| CN105137865A (en) * | 2015-08-08 | 2015-12-09 | 湖南南电电气有限公司 | Safe energy-saving controller |
| CN106891778B (en) * | 2017-03-09 | 2019-03-19 | 沈阳师范大学 | A kind of multi-path centrally connected power supply autocontrol method |
| CN108551155A (en) * | 2018-06-28 | 2018-09-18 | 廖伟华 | A kind of drying machine electromechanics electric current warning device |
| CN113619646A (en) * | 2020-06-29 | 2021-11-09 | 株洲中车时代电气股份有限公司 | Control method, device and system for safe train delivery |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2207975Y (en) * | 1994-06-14 | 1995-09-20 | 李孝杰 | DC converter of electric locomotive |
| WO1998029932A2 (en) * | 1996-12-17 | 1998-07-09 | Asea Brown Boveri Ab | A device and a method for protecting an object against fault-related over-currents |
| CN201506266U (en) * | 2009-10-16 | 2010-06-16 | 江西稀有稀土金属钨业集团有限公司 | Automatic power-on and power-off device for electric locomotive stringing |
-
2009
- 2009-10-16 CN CN2009101862512A patent/CN101695906B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2207975Y (en) * | 1994-06-14 | 1995-09-20 | 李孝杰 | DC converter of electric locomotive |
| WO1998029932A2 (en) * | 1996-12-17 | 1998-07-09 | Asea Brown Boveri Ab | A device and a method for protecting an object against fault-related over-currents |
| CN201506266U (en) * | 2009-10-16 | 2010-06-16 | 江西稀有稀土金属钨业集团有限公司 | Automatic power-on and power-off device for electric locomotive stringing |
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| CN101695906A (en) | 2010-04-21 |
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