CN212354002U - AC contact net and DC contact net double-power-supply rail flaw detection vehicle - Google Patents
AC contact net and DC contact net double-power-supply rail flaw detection vehicle Download PDFInfo
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- CN212354002U CN212354002U CN202021250922.5U CN202021250922U CN212354002U CN 212354002 U CN212354002 U CN 212354002U CN 202021250922 U CN202021250922 U CN 202021250922U CN 212354002 U CN212354002 U CN 212354002U
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Abstract
The utility model discloses an alternating current contact net and direct current contact net dual supply rail flaw detection vehicle, which comprises a vehicle body and a traction power supply system arranged in the vehicle body, wherein the traction power supply system comprises an alternating current pantograph and a direct current pantograph, the output end of the alternating current pantograph is connected with an AC protection device, the output end of the AC protection device is connected with a traction transformer, and the output end of the traction transformer is connected with a traction converter cabinet after outputting two paths of AC 830V; the invention can carry out high-speed, comprehensive and accurate flaw detection on the subway steel rail, is suitable for an alternating current contact network and a direct current contact network for power supply, improves the efficiency and the application range of steel rail flaw detection, and increases the safety of subway operation.
Description
Technical Field
The utility model belongs to the technical field of rail engineering car makes and the railway detection, concretely relates to exchange contact net and two power supply rail flaw detection cars of direct current contact net.
Background
At present, the flaw detection of the subway steel rail still mainly uses a steel rail flaw detector to operate manually. The labor intensity is high, the efficiency is low, the operation is not comprehensive enough, the problems existing in the track can not be found in time, and great potential safety hazards are brought to the operation of the subway. Therefore, a rapid, comprehensive and accurate subway steel rail flaw detection device is urgently needed.
Urban rail transit at home and abroad develops rapidly, early line power supply mainly comprises DC1500V direct current contact network power supply, and in recent years, along with rapid development of economy, rapid fusion of main urban areas and surrounding satellite cities and rapid development of urban railways of medium and long distances are achieved. In the part of lines, the efficiency and the loss of a power supply system are considered, and most of the lines adopt an alternating current 25kV contact network power supply system, so that an urban rail transit power supply system has two power supply modes of a direct current contact network and an alternating current contact network, large-scale detection equipment such as a steel rail flaw detection vehicle is not universal, and equipment waste is caused. And the running speed and the detection speed of the traditional steel rail flaw detection vehicle are low, so that the high-speed steel rail flaw detection vehicle is particularly necessary in a tense subway operation skylight period.
In addition, the current mainstream rail flaw detection vehicle still adopts internal combustion power for driving, although the technology is mature and the operation is flexible, the rail flaw detection vehicle also has the more outstanding defects, a large amount of noise and smoke can be generated in the closed operation environment of the subway, and the vibration is large, so that the flaw detection operation precision is influenced.
Aiming at the problems in the prior art, a high-speed flaw detection vehicle which can be suitable for double power supply of an alternating-current contact network and a direct-current contact network is urgently needed.
Disclosure of Invention
The utility model provides a solve above-mentioned technical problem, provide an exchange contact net and two power supply rail flaw detection cars of direct current contact net, can carry out high-speed, comprehensive, accurate flaw detection to the subway rail, can be applicable to exchange the contact net and can be applicable to the direct current contact net power supply again, improve the efficiency and the application scope that the rail detected a flaw, increase the security of subway operation.
The utility model adopts the technical proposal that: a double-power-supply steel rail flaw detection vehicle for an alternating current contact network and a direct current contact network comprises a vehicle body and a traction power supply system arranged in the vehicle body, wherein the traction power supply system comprises an alternating current pantograph and a direct current pantograph, the output end of the alternating current pantograph is connected with an AC protection device, the output end of the AC protection device is connected with a traction transformer, and the output end of the traction transformer outputs two paths of AC830V and then is connected with a traction converter cabinet; the output end of the direct current pantograph is connected with a DC protection device, the output end of the DC protection device is connected with a traction converter cabinet, and the output end of the traction converter cabinet is respectively connected with a traction motor I, a traction motor II, an emergency power supply module and vehicle-mounted equipment.
The traction converter cabinet is internally provided with a 4QC module, a traction module I, a traction module II and an auxiliary inverse module, the output end of the 4QC module is respectively connected with the traction module I, the traction module II, the auxiliary inverse module and a brake resistor, and the input ends of the traction module I, the traction module II, the auxiliary inverse module and the brake resistor are respectively connected with the output end of the DC protection device.
The inside I-end cab, the equipment room, the tool room, the operation room and the II-end cab are arranged in the vehicle body.
And a driver operating handle, a brake handle, a vehicle management system display screen, a signal system display screen, an operating switch, a driver seat, fire fighting equipment and an emergency air release valve are respectively arranged in the I-end driver cab and the II-end driver cab.
And auxiliary equipment of a flaw detection system is arranged in the tool room and comprises a flaw detection water tank, a temperature control cabinet, a water pump cabinet, a tool cabinet and a workbench.
And a flaw detection cabinet, a flaw detection operating platform with three working positions, a flaw detection PLC cabinet and a signal system cabinet are arranged in the working chamber.
The automatic flaw detection device is characterized in that two-shaft welding bogies, an air compressor, a line reactor, a height breaker and a traction transformer are arranged below the vehicle body, the vehicle body is seated on the bogies through a secondary suspension, the bogie at one end carries two traction motors and a gear box to provide power for the whole vehicle, and the bogie at the other end is a non-power bogie and is suspended with a flaw detection trolley of a flaw detection system.
When the double-power-supply steel rail flaw detection vehicle for the alternating current contact network and the direct current contact network is used, the double-power-supply steel rail flaw detection vehicle comprises the following steps:
1. starting up preparation: and closing the control power supply cabinet and the low-voltage cabinet, enabling each system to enter a self-checking state, displaying the state of each system by a display screen of the control console, and enabling the steel rail flaw detection vehicle to enter a preparation working state.
2. The driver selects the main control console, selects the power supply mode, operates the pantograph foot pump to meet the pantograph lifting air pressure requirement of the pantograph, operates the pantograph key-pulling switch of the main control console to lift the pantograph, and can close the main circuit breaker or the height circuit breaker after the network voltage display is normal. Under the mode of an alternating current contact net: the traction transformer converts the AC25kV high-voltage electricity into two paths of AC830V power supplies to the input end of the traction converter cabinet 4QC, and the main converter and the auxiliary converter are powered; under the direct current contact net mode: the DC1500V pantograph transmits a power supply to a middle loop of the traction converter cabinet, and the main converter and the auxiliary converter are powered; and finishing power supply of the flaw detection vehicle.
3. The driver operates the air compressor, the lighting, the air conditioning fan and other auxiliary machines to prepare for driving.
4. And (5) the driver relieves the brake, the driver controller is operated, the traction converter cabinet converts the bus voltage and then drives the asynchronous traction motor, and the motor train is completed.
5. And (4) connecting a flaw detection system power supply by a flaw detection operator, and descending a probe in the flaw detection trolley to contact the steel rail to detect the steel rail.
6. After the operation is finished, the vehicle returns to the garage, a driver operates the main circuit breaker or the height circuit breaker and the pantograph switch to perform power-off operation, the low-voltage cabinet control power supply is disconnected, and the whole vehicle is powered off.
The output end of the alternating current pantograph is connected with an AC protection device, and the output end of the AC protection device is connected with a traction transformer, wherein the AC protection device is a vacuum circuit breaker; the purpose of this is: the main function is to switch on and off the main circuit of the electric locomotive, and simultaneously, the main circuit is switched off to protect the locomotive under the condition that the locomotive detects short-circuit current or overvoltage, so that the safe operation of the locomotive is ensured.
The output end of the AC protection device is connected with a traction transformer; the purpose of this is: the main function is to convert the high voltage drawn from the contact net into two low voltage electricity needed by the traction converter cabinet, wherein, the traction transformer is installed under the vehicle body, adopts ODAF (forced guided oil circulation air cooling) mode, and is provided with a cooler and a fan, the box body adopts a low temperature resistant steel structure, the high voltage winding adopts a heat-resistant insulating paper-wrapped flat copper wire, all the low voltage windings are made of transposed wires, the iron core is made of cold-rolled oriented silicon steel sheets, and the iron core fastener adopts high-strength non-magnetic steel.
The output end of the direct current pantograph is connected with a DC protection device, the output end of the DC protection device is connected with a traction converter cabinet, and the DC protection device is a high-speed circuit breaker; the purpose of this is: the high-speed circuit breaker is a direct-current high-speed current-limiting circuit breaker with natural air cooling, and the circuit breaker can react to detected overload current in a very short time and is used for protecting electric equipment in a direct-current loop on a rail transit vehicle.
The utility model has the advantages that:
the invention can carry out high-speed, comprehensive and accurate flaw detection on the subway steel rail, is suitable for both an alternating current contact network and a direct current contact network for power supply, improves the efficiency and the application range of the flaw detection of the steel rail and increases the safety of the subway operation.
Drawings
FIG. 1 is an overall structure diagram of the present invention;
fig. 2 is a schematic circuit diagram of the traction power supply system of the present invention.
The labels in the figure are: 1. an alternating current pantograph; 2. an AC protection device; 3. a traction transformer; 4. a direct current pantograph; 5. a DC protection device; 6. a brake resistor; 7. a traction converter cabinet; 8. 4QC module; 9. a first traction module; 10. a second traction module; 11. an auxiliary inverse module; 12. an emergency power supply module; 13. a traction motor I; 14. a second traction motor; 15. an in-vehicle device; 16. a vehicle body; 17. a bogie.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in the figure, the double-power-supply rail flaw detection vehicle for the alternating current contact network and the direct current contact network comprises a vehicle body 16 and a traction power supply system arranged in the vehicle body 16, wherein the traction power supply system comprises an alternating current pantograph 1 and a direct current pantograph 4, the output end of the alternating current pantograph 1 is connected with an AC protection device 2, the output end of the AC protection device 2 is connected with a traction transformer 3, and the traction transformer 3 is connected with a traction converter cabinet 7 after outputting two paths of AC830V at the output end; the output end of the direct current pantograph 4 is connected with a DC protection device 5, the output end of the DC protection device 5 is connected with a traction converter cabinet 7, the output end of the traction converter cabinet 7 is respectively connected with a traction motor I13, a traction motor II 14, an emergency power supply module 12 and a vehicle-mounted device 15, and the traction motor I13 and the traction motor II 14 are actuating mechanisms and used for transmitting kinetic energy to a driving gear box so as to drive an axle and wheels to move.
The traction converter cabinet 7 is internally provided with a 4QC module 8, a traction module I9, a traction module II 10 and an auxiliary inverse module 11, the output end of the 4QC module 8 is respectively connected with the traction module I9, the traction module II 10, the auxiliary inverse module 11 and the brake resistor 6, and the input ends of the traction module I9, the traction module II 10, the auxiliary inverse module 11 and the brake resistor 6 are respectively connected with the output end of the DC protection device 5.
The vehicle body 16 is internally provided with an I-end driver cab, an equipment room, a tool room, an operation room and an II-end driver cab.
And a driver operating handle, a brake handle, a vehicle management system display screen, a signal system display screen, an operating switch, a driver seat, fire fighting equipment and an emergency air release valve are respectively arranged in the I-end driver cab and the II-end driver cab.
And auxiliary equipment of a flaw detection system is arranged in the tool room and comprises a flaw detection water tank, a temperature control cabinet, a water pump cabinet, a tool cabinet and a workbench.
And a signal system cabinet, a control power supply cabinet, a low-voltage cabinet, a high-voltage cabinet, a traction converter cabinet 7, a brake cabinet, an emergency power supply, an auxiliary transformer, a traction transformer auxiliary oil tank and the like are arranged between the equipment rooms.
And a flaw detection cabinet, a flaw detection operating platform with three working positions, a flaw detection PLC cabinet and a signal system cabinet are arranged in the working chamber.
Two-shaft welding bogies 17, an air compressor, a line reactor, a height breaker and a traction transformer 3 are arranged below the vehicle body 16, the vehicle body 16 is seated on the bogies 17 through a secondary suspension, the bogie 17 at one end carries two traction motors and a gear box to provide power for the whole vehicle, the bogie 17 at the other end is a non-power bogie 17, a flaw detection trolley with a flaw detection system is suspended, the flaw detection trolley adopts ultrasonic flaw detection, a detection wheel of the flaw detection trolley descends to contact with a steel rail during working, the steel rail is detected, and the highest detection speed can reach 80 km/h.
When the double-power-supply steel rail flaw detection vehicle for the alternating current contact network and the direct current contact network is used, the double-power-supply steel rail flaw detection vehicle comprises the following steps:
1. starting up preparation: and closing the control power supply cabinet and the low-voltage cabinet, enabling each system to enter a self-checking state, displaying the state of each system by a display screen of the control console, and enabling the steel rail flaw detection vehicle to enter a preparation working state.
2. The driver selects the main control console, selects the power supply mode, operates the pantograph foot pump to meet the pantograph lifting air pressure requirement of the pantograph, operates the pantograph key-pulling switch of the main control console to lift the pantograph, and can close the main circuit breaker or the height circuit breaker after the network voltage display is normal. Under the mode of an alternating current contact net: the traction transformer 3 converts the AC25kV high voltage into two AC830V power supplies to the input end of the traction converter cabinet 74QC, and the main converter and the auxiliary converter are powered; under the direct current contact net mode: the DC1500V pantograph transmits the power supply to the middle loop of the traction converter cabinet 7, and the main converter and the auxiliary converter are powered; and finishing power supply of the flaw detection vehicle.
3. The driver operates the air compressor, the lighting, the air conditioning fan and other auxiliary machines to prepare for driving.
4. And (5) the driver relieves the brake, the driver controller is operated, the bus voltage is converted by the traction converter cabinet 7 to drive the asynchronous traction motor, and the motor train is completed.
5. And (4) connecting a flaw detection system power supply by a flaw detection operator, and descending a probe in the flaw detection trolley to contact the steel rail to detect the steel rail.
6. After the operation is finished, the vehicle returns to the garage, a driver operates the main circuit breaker or the height circuit breaker and the pantograph switch to perform power-off operation, the low-voltage cabinet control power supply is disconnected, and the whole vehicle is powered off.
The embodiment mainly solves the problem of clean power supply of the flaw detection vehicle and safe switching of power supply of an alternating current contact network and a direct current contact network (in any case, a network control logic can only connect one control circuit, a hard wire connection mode is adopted, the vacuum circuit breaker of an alternating current main circuit is interlocked with the high-speed circuit breaker of a direct current main circuit to ensure that only one circuit can be closed in any case, a pantograph gas circuit control mode is adopted, except the interlocking of the electromagnetic valve control circuit of the pantograph gas circuit, one control of a three-way valve is additionally arranged to ensure the uniqueness of the connection of the pantograph gas circuit), a three-level safety interlocking key is arranged at a high-voltage end, and strict electric interlocking is.
Wherein, tertiary safety interlocking key operation is as follows:
firstly, confirming that the locomotive is disconnected and the pantograph is lowered, turning OFF a DC1500V isolating switch, taking out a yellow key and closing the yellow key;
secondly, a brake cabinet safety interlocking blue key is inserted into a high-voltage grounding switch, a grounding switch handle is rotated to a grounding position, and a yellow key is taken out;
and thirdly, when two yellow keys are simultaneously inserted into the safety key box to rotate and lock, 3 safety door lock keys (green keys) can be pulled out from the safety key box, and then the related electric cabinet door is opened or the top-climbing door is opened.
And fourthly, only when 3 security door lock keys (green keys) are correctly inserted and rotated and locked on the security key box, the two yellow keys can be rotated and taken out.
Meanwhile, the vehicle is provided with a plurality of emergency facilities including an emergency power supply and an emergency traction mode LCU, and the emergency power supply can ensure that the vehicle can be maintained to run into the garage under the condition that the auxiliary inverter fails; the LCU in the emergency traction mode replaces a communication network to realize low-speed emergency traction under the condition of ensuring that a vehicle communication network (a bus MVB and a module) has a fault.
Claims (7)
1. The utility model provides an exchange contact net and direct current contact net dual supply rail flaw detection car which characterized in that: the traction power supply system comprises an alternating current pantograph and a direct current pantograph, the output end of the alternating current pantograph is connected with an AC protection device, the output end of the AC protection device is connected with a traction transformer, and the output end of the traction transformer is connected with a traction converter cabinet after outputting two paths of AC 830V; the output end of the direct current pantograph is connected with a DC protection device, the output end of the DC protection device is connected with a traction converter cabinet, and the output end of the traction converter cabinet is respectively connected with a traction motor I, a traction motor II, an emergency power supply module and vehicle-mounted equipment.
2. The double-power-supply steel rail flaw detection vehicle for the alternating current contact network and the direct current contact network as claimed in claim 1, characterized in that: the traction converter cabinet is internally provided with a 4QC module, a traction module I, a traction module II and an auxiliary inverse module, the output end of the 4QC module is respectively connected with the traction module I, the traction module II, the auxiliary inverse module and a brake resistor, and the input ends of the traction module I, the traction module II, the auxiliary inverse module and the brake resistor are respectively connected with the output end of the DC protection device.
3. The double-power-supply steel rail flaw detection vehicle for the alternating current contact network and the direct current contact network as claimed in claim 1, characterized in that: the vehicle body is internally provided with an I-end driver cab, an equipment room, a tool room, an operation room and an II-end driver cab.
4. The double-power-supply steel rail flaw detection vehicle for the alternating current contact network and the direct current contact network as claimed in claim 3, characterized in that: and a driver operating handle, a brake handle, a vehicle management system display screen, a signal system display screen, an operating switch, a driver seat, fire fighting equipment and an emergency air release valve are respectively arranged in the I-end cab and the II-end cab.
5. The double-power-supply steel rail flaw detection vehicle for the alternating current contact network and the direct current contact network as claimed in claim 3, characterized in that: and auxiliary equipment of a flaw detection system is arranged in the tool room and comprises a flaw detection water tank, a temperature control cabinet, a water pump cabinet, a tool cabinet and a workbench.
6. The double-power-supply steel rail flaw detection vehicle for the alternating current contact network and the direct current contact network as claimed in claim 3, characterized in that: and a flaw detection cabinet, a flaw detection operating platform with three working positions, a flaw detection PLC cabinet and a signal system cabinet are arranged in the working chamber.
7. The double-power-supply steel rail flaw detection vehicle for the alternating current contact network and the direct current contact network as claimed in claim 1, characterized in that: two-shaft welding bogies, an air compressor, a line reactor, a height breaker and a traction transformer are arranged below the vehicle body, the vehicle body is seated on the bogies through a secondary suspension, the bogie at one end carries two traction motors and a gear box to provide power for the whole vehicle, and the bogie at the other end is a non-power bogie and is suspended with a flaw detection trolley of a flaw detection system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021250922.5U CN212354002U (en) | 2020-07-01 | 2020-07-01 | AC contact net and DC contact net double-power-supply rail flaw detection vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021250922.5U CN212354002U (en) | 2020-07-01 | 2020-07-01 | AC contact net and DC contact net double-power-supply rail flaw detection vehicle |
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| CN212354002U true CN212354002U (en) | 2021-01-15 |
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| CN202021250922.5U Active CN212354002U (en) | 2020-07-01 | 2020-07-01 | AC contact net and DC contact net double-power-supply rail flaw detection vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112968593A (en) * | 2021-02-01 | 2021-06-15 | 重庆中车长客轨道车辆有限公司 | AC/DC dual-purpose power supply device |
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2020
- 2020-07-01 CN CN202021250922.5U patent/CN212354002U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112968593A (en) * | 2021-02-01 | 2021-06-15 | 重庆中车长客轨道车辆有限公司 | AC/DC dual-purpose power supply device |
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