CN102951164B - Track traffic vehicle preheating system and method thereof - Google Patents
Track traffic vehicle preheating system and method thereof Download PDFInfo
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- CN102951164B CN102951164B CN201110243060.2A CN201110243060A CN102951164B CN 102951164 B CN102951164 B CN 102951164B CN 201110243060 A CN201110243060 A CN 201110243060A CN 102951164 B CN102951164 B CN 102951164B
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Abstract
The invention discloses a track traffic vehicle preheating system and a method thereof. The system comprises a trigger device used for conducting a connection circuit between a storage battery and an auxiliary device when the monitored internal temperature of a track traffic vehicle is lower than a first preset temperature; the storage battery used for providing electric power required by the running of the auxiliary device; the auxiliary device used for providing conditions for connecting a first preheating system to an electrical network at a low temperature; and the first preheating system used for heating the first device of the track traffic vehicle under the driving of the electric network power supply when the electrical network is connected, wherein the work voltage of the auxiliary device is lower the work voltage of the first preheating system. The track traffic vehicle preheating system and the method thereof make the internal temperature of the track traffic vehicle be greater than a required work temperature in order to normally start the track traffic vehicle.
Description
Technical field
The present invention relates to control technology, particularly relate to a kind of rail traffic vehicles preheating system and method.
Background technology
Along with the fast development of China's track traffic, track vehicle has become the main force of modern transportation instrument, and it not only has the feature that speed is fast and transportation volume is large, and safer, convenient.
Due to it, to have environmental pollution lower in electric locomotive, therefore becomes now the mainstream type of rail traffic vehicles.But the Electrical and Electronic element selected by electric locomotive is common industrial grade components and parts, has the requirement of certain operating temperature.When the temperature of electric locomotive inside is positioned at below required operating temperature, this electric locomotive is probably caused to start.In prior art, the general external heat equipment that adopts is to the mode of intra-locomotive blowing hot-air, and because these equipment are more clumsy, it is very inconvenient that carrying is got up, and time of heat, temperature rely on artificially feel to judge completely, affect the efficiency of heating surface.Therefore this mode can waste a large amount of man power and materials.
Summary of the invention
The invention provides a kind of rail traffic vehicles preheating system and method, during in order to avoid the ambient temperature of rail traffic vehicles inside lower than required operating temperature, the defect that electric locomotive cannot start all the time.
The embodiment of the present invention provides a kind of rail traffic vehicles preheating system, comprising:
Flip flop equipment, for when the internal temperature monitoring described rail traffic vehicles is lower than the first preset temperature, junction circuit between conducting storage battery and auxiliary device, described first preset temperature is the first temperature of described rail traffic vehicles inside when normally starting;
Described storage battery, is connected with described auxiliary device, electric power required when running for providing described auxiliary device;
Described auxiliary device, be connected with described storage battery and the first preheating system control part respectively, the condition needed for electrical network is connected to, electric power required when described electrical network is for providing described first preheating system to run for described first preheating system under providing cryogenic conditions;
Described first preheating system, is connected with described auxiliary device, for heating the first equipment of described rail traffic vehicles under described mains supply drives when connecting described electrical network;
Wherein, the operating voltage of described auxiliary device is lower than the operating voltage of described first preheating system.
Rail traffic vehicles preheating system as above, preferably, described preheating system also comprises:
Detecting device, for detecting the internal temperature of described rail traffic vehicles;
Read out instrument, show lower than during described first preset temperature for the testing result when described detecting device, and/or when the testing result of described detecting device shows higher than during the second preset temperature, described second preset temperature is the second temperature of described rail traffic vehicles inside when normally starting, and described second preset temperature is more than or equal to described first preset temperature;
Wherein, described detecting device is connected with described storage battery respectively with described read out instrument, for operationally obtaining required electric power.
Rail traffic vehicles preheating system as above, preferably, described preheating system also comprises:
Fender guard; for when detect the time of heat of described first preheating system exceed default time of heat and/or when detect the heating-up temperature of described first preheating system more than the second preset temperature and/or monitor that described first preheating system is short-circuited, ground connection or overcurrent time, cut off and power to described first preheating system.
Rail traffic vehicles preheating system as above, preferably, described first preheating system comprises the heating arrangement of warm air system, main variable flow cabinet, auxiliary converter cabinet, microcomputer control cabinet.
Rail traffic vehicles preheating system as above, preferably, described auxiliary device is compressor.
Rail traffic vehicles preheating system as above, preferably, described read out instrument is light-emitting diode.
Rail traffic vehicles preheating system as above, preferably, described rail traffic vehicles preheating system also comprises the second preheating system, for heating the second equipment, described second preheating system is connected with described storage battery, and the operating voltage of described first preheating system is higher than the operating voltage of described second preheating system.
Rail traffic vehicles preheating system as above, preferably, the operating voltage of described first preheating system is 220V, and the operating voltage of described second preheating system is 110V, and described second preheating system comprises the heating arrangement of read-out.
Present invention also offers a kind of rail traffic vehicles, comprise according to arbitrary rail traffic vehicles preheating system as above, described second equipment comprises each read-out of described rail traffic vehicles, and described first equipment comprises converter cabinet.
Present invention also offers a kind of rail traffic vehicles and preheat method, use according to rail traffic vehicles preheating system as above, described in preheat method and comprise:
When the internal temperature monitoring described rail traffic vehicles is lower than described first preset temperature, junction circuit between conducting storage battery and auxiliary device, the first preheating system is provided to be connected to condition needed for electrical network to start auxiliary device, described electrical network is for providing the electric power needed for described first preheating system, and described first preset temperature is the first temperature of described rail traffic vehicles inside when normally starting;
When described auxiliary device work is to Preset Time, described first preheating system is connected to described electrical network, heats to start first equipment of described first preheating system to described rail traffic vehicles.
Rail traffic vehicles preheating system provided by the invention and method, by adopting auxiliary device, the first preheating system is connected to electrical network to heat described rail traffic vehicles, on the operating temperature making the internal temperature of rail traffic vehicles reach required, can normally start to make this rail traffic vehicles.
Accompanying drawing explanation
Fig. 1 is the structural representation of the rail traffic vehicles preheating system according to the embodiment of the present invention one;
Fig. 2 is the structural representation of the rail traffic vehicles preheating system according to the embodiment of the present invention two;
Fig. 3 is the structural representation of the rail traffic vehicles preheating system according to the embodiment of the present invention three.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.It should be noted that, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only in order to object that is convenient, the clearly aid illustration embodiment of the present invention.
embodiment one
The present embodiment one provides a kind of rail traffic vehicles preheating system, and as shown in Figure 1, rail traffic vehicles preheating system comprises: flip flop equipment 100, storage battery 101, first preheating system 102 and auxiliary device 103.
Wherein, flip flop equipment 100 is for when the internal temperature monitoring rail traffic vehicles is lower than the first preset temperature, and the junction circuit between conducting storage battery 101 and auxiliary device 103, makes storage battery 101 can power for auxiliary device 103.First preset temperature is the first temperature of rail traffic vehicles inside when normally starting.Particularly, the first preset temperature can be the lower limit temperature of rail traffic vehicles internal temperature when normally starting, such as, be subzero 25 degrees Celsius.This flip flop equipment 100 can be connected to the switch between storage battery 101 and auxiliary device 103; Storage battery 101 is connected with auxiliary device 103, electric power required when running for providing auxiliary device 103; Auxiliary device 103 is connected with the first preheating system 102 with storage battery 101 respectively, is connected to condition needed for electrical network, electric power required when electrical network is for providing the first preheating system 102 to run for providing the first preheating system 102 under cryogenic conditions; First preheating system 102 is connected with auxiliary device 103, for heating the first equipment of rail traffic vehicles under mains supply drives when connecting electrical network.
Wherein, the operating voltage of auxiliary device 103 is lower than the operating voltage of the first preheating system 102.For example, the operating voltage that can provide of storage battery 101 is 110V, and the operating voltage of auxiliary device 103 is 110V, and the operating voltage of the first preheating system is 220V.In actual applications, the first equipment generally comprises warm air system, main variable flow cabinet, auxiliary converter cabinet, microcomputer control cabinet, can also comprise other electrical equipment, electronic component in the car body of this rail traffic vehicles.Correspondingly, the first preheating system comprises the heating arrangement of warm air system, main variable flow cabinet, auxiliary converter cabinet, microcomputer control cabinet, can also comprise the heating arrangement of other electrical equipment in car body, electronic component.
In the present embodiment, adopting provides the auxiliary device 103 of electric power to make the first preheating system 102 be connected to electrical network by storage battery 101, electrical network provides electric power for the first preheating system 102, can work to heat for this rail traffic vehicles to make the first preheating system 102, make the internal temperature of rail traffic vehicles rise on required operating temperature, namely rise to normally can start this rail traffic vehicles temperature on.Generally the vehicle body of rail traffic vehicles is longer, need to use high-performance heating arrangement to heat, but the general alternating current all adopting 220V of this high-performance heating arrangement, even if with the alternating current that electrical network provides, and rail traffic vehicles is when cannot normally start, the reservoir of pantograph cannot reach set pressure to rise pantograph, and such pantograph can not be connected to electrical network.If research and development can adopt direct current (DC) to carry out the high power heater of work separately, not only productive costs can be increased substantially, and storage battery 101 also needs to make correspondingly high-capacity storage battery, can bring that area occupied is large, productive costs is high and the problems such as inconvenience are installed.The rail traffic vehicles preheating system of the present embodiment one, when detecting that internal temperature is lower than the first preset temperature, time under the temperature that namely can normally start, first utilize the junction circuit between flip flop equipment 100 conducting storage battery 101 and auxiliary device 103, such storage battery 101 just can have been powered for auxiliary device 103.Then starting auxiliary device 103 works to Preset Time, even if reservoir reaches the pressure that can rise pantograph, think that pantograph provides the power be connected to needed for electrical network, namely auxiliary device is first adopted to make reservoir meet the requirement of the pressure rising pantograph, then pantograph, closed line circuit breaker is risen, such electrical network just can provide electric power for each higher power device in the first preheating system 102, make them carry out work, make the temperature of this rail traffic vehicles inside reach on operating temperature further.This operating temperature can be subzero 25 degrees Celsius.
According to the rail traffic vehicles preheating system of the present embodiment one, when the internal temperature when rail traffic vehicles can be made to be positioned under required operating temperature, by heating, the internal temperature of this rail traffic vehicles is risen on required operating temperature, make rail traffic vehicles be able to normal startup.
embodiment two
The rail traffic vehicles preheating system of the present embodiment to embodiment one improves.As shown in Figure 2, this rail traffic vehicles preheating system also comprises the second preheating system 104.This second preheating system 104 is connected with storage battery 101, and the operating voltage of the first preheating system 102 is higher than the operating voltage of the second preheating system 104.
Such as, when the operating voltage that storage battery 101 can provide is 110V, the operating voltage of the first preheating system 102 is 220V, the operating voltage of the second preheating system 104 is 110V, second preheating system 104 comprises the heating arrangement of each read-out in rail traffic vehicles, can also comprise the cold-proof heating arrangement of electromagnetic valve.
In the present embodiment, when the internal temperature monitoring rail traffic vehicles is lower than the first preset temperature, the junction circuit of flip flop equipment 100 not only between conducting storage battery 101 and auxiliary device 103, also wanting the junction circuit between conducting storage battery 101 and the second preheating system 104, is that the second preheating system 104 is powered to make storage battery 101.Second preheating system 104 is that the second equipment of rail traffic vehicles heats, and the second equipment generally comprises read-out, can also comprise electromagnetic valve.
Adopt the second preheating system 104 to be first that the second equipment heats, can make to need the equipment of heating separately to be heated fully to ensure that it can normally work.Such as read-out, it installs general in operating console, causes heat transmissibility poor, though can make rail traffic vehicles inside like this reach on operating temperature, read-out can not normally show, or needs just can show after a longer time.In order to ensure that read-out normally can show information, can heat read-out separately.And due to read-out heating required for power less comparatively speaking, the second preheating system 104 that is lower-powered, that powered by storage battery 101 can be adopted to heat.
In the present embodiment, the heating system that employing two operating voltages are different respectively rises on required operating temperature with the temperature of the inside making rail traffic vehicles, namely rise to normally can start this rail traffic vehicles temperature on, both ensure that the temperature of whole rail traffic vehicles can reach on operating temperature, the equipment that needs can be made again to carry out separately heating to ensure normally works quickly.
embodiment three
The rail traffic vehicles preheating system of the present embodiment three pairs of embodiments one and embodiment two does and improves further, and as shown in Figure 3, this rail traffic vehicles preheating system also comprises detecting device 201 and read out instrument 202.
Wherein, detecting device 201 is for detecting the internal temperature of rail traffic vehicles, read out instrument 202 shows lower than during the first preset temperature for 201 testing results when detecting device, and/or when the testing result of detecting device 201 shows higher than during the second preset temperature, first preset temperature is the first temperature of rail traffic vehicles inside when normally starting, concrete, the first preset temperature can be the lower limit temperature of rail traffic vehicles when normally starting, such as, be subzero 25 degrees Celsius.Second preset temperature is the second temperature of this rail traffic vehicles inside when normally starting, it is such as the preference temperature that can ensure that all electrical equipment of described rail traffic vehicles and electronic machine normally run, this second preset temperature can be equal with the first preset temperature, also the first preset temperature can be greater than, such as zero degree, the rail traffic vehicles for normal work can be carried out can be avoided like this to continue heating, cause unnecessary waste.Detecting device 201 and read out instrument 202 provide electric power by storage battery 101.
What detecting device 201 adopted is the physics temperature sensing device that can work at a lower temperature, such as temperature switch, temperature sensor etc., this detecting device 201 is preferably temperature switch, this is because its cost and the steerability at low temperature environment temperature, ease for use are all better than temperature sensor.Read out instrument 202 can be read-out, display lamp etc., read-out can the concrete numerical value of Temperature displaying detected by detecting device 201, display lamp can by whether lighting, whether the Current Temperatures of this rail traffic vehicles inside of display such as color be positioned under required operating temperature.This read out instrument 202 is preferably light-emitting diode, and this is because light-emitting diode can not only be operated in lower temperature, such as, about 40 degrees below zero, and low price, the cost of manufacture of this rail traffic vehicles can not be increased too much.
It is pointed out that the effect due to storage battery 101, and due to the consumption of current of detecting device 201 and read out instrument 202 less, therefore, it is possible to work always.
According to the rail traffic vehicles preheating system of the present embodiment two, to be shown by read out instrument 202 by detecting device 201 detected temperatures, the Current Temperatures of staff's rail traffic vehicles inside can be informed exactly, to judge whether that startup first preheating system 102 starts heating.
embodiment four
The present embodiment four pairs of embodiments one, the rail traffic vehicles preheating system of embodiment two and embodiment three improves, this rail traffic vehicles also comprises fender guard, this fender guard is used for when detect that the time of heat of the first preheating system 102 exceedes default time of heat and/or when detect that the heating-up temperature of the first preheating system 102 is more than the second preset temperature and/or monitor the first preheating system 102 and be short-circuited, when ground connection or overcurrent, cut off and power to the first preheating system 102, fender guard can be connected between storage battery 101 and the control circuit of the first preheating system 102.
Particularly, the implementation of this fender guard can be relay, circuit breaker, and fender guard can be connected between storage battery 101 and the first preheating system 102 control circuit.
In practical operation, when the first preheating system 102 is heated to uniform temperature, need to close in time, to avoid the first preheating system 102 to heat always, make the temperature of rail traffic vehicles inside too high, cause unnecessary waste and can fire hazard.And the first preheating system 102 is due to reasons such as aging or damages, the situations such as short circuit, ground connection or overcurrent may be there is, like this, the first preheating system 102 not only likely can be caused normally to work even damage, also likely cause the damage of other parts of rail traffic vehicles, even if also cannot normally work when causing this rail traffic vehicles on required operating temperature.For the second preheating system 104; usually such fender guard is not needed; mainly because the second preheating system 104 is powered by storage battery; its work-hours can have certain restriction due to the power storage of storage battery; moreover, even if this second preheating system 104 work-hours is long also can not cause excessive impact to the temperature of this rail traffic vehicles inside.But, in actual applications, can determine whether as required arranging fender guard to this second preheating system 104.
According to the rail traffic vehicles preheating system of the present embodiment four, the overlong time that the first preheating system 102 works can be avoided, cause this rail traffic vehicles internal temperature too high, and the short circuit avoiding likely occurring, the situation such as ground connection or overcurrent, to avoid the damage caused this rail traffic vehicles.
embodiment five
The present embodiment five provides a kind of rail traffic vehicles, comprise the rail traffic vehicles preheating system described by any embodiment of the present invention, wherein the first equipment can comprise warm air system, main variable flow cabinet, auxiliary converter cabinet, microcomputer control cabinet, other equipment such as electrical equipment, electronic component in car body can also be comprised, second equipment can comprise each read-out of rail traffic vehicles, can also comprise electromagnetic valve etc.
According to the rail traffic vehicles of the present embodiment, when its internal temperature is lower than below the first preset temperature to such an extent as to when can not normally start, it can be heated rail traffic vehicles preheating system, the internal temperature of this rail traffic vehicles is made to arrive the first preset temperature, like this, then by normal start-up routine just this rail traffic vehicles can be started.
embodiment six
The present embodiment six provides the rail traffic vehicles according to the present invention based on the above-mentioned any embodiment of the present invention to preheat method, comprising:
When the internal temperature monitoring rail traffic vehicles is lower than the first preset temperature, junction circuit between conducting storage battery and auxiliary device, the first preheating system is provided to be connected to condition needed for electrical network to start auxiliary device, electrical network is for providing the electric power needed for the first preheating system, and the first preset temperature is the first temperature of rail traffic vehicles inside when normally starting;
When after auxiliary device work, the first preheating system is connected to electrical network, heats to start first equipment of the first preheating system to rail traffic vehicles.
Preferably, before startup first preheating system heats the first equipment, also comprise: the internal temperature detecting rail traffic vehicles, and testing result is shown by detecting device.
Rail traffic vehicles according to the present embodiment six preheats method, can rail traffic vehicles internal temperature lower than under the operating temperature needed for its parts time, rail traffic vehicles according to the present embodiment six preheats method, the internal temperature of this rail traffic vehicles can be made to return on normal operating temperature, to ensure that this rail traffic vehicles can normally start.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (9)
1. a rail traffic vehicles preheating system, is characterized in that, comprising:
Flip flop equipment, for when the internal temperature monitoring described rail traffic vehicles is lower than the first preset temperature, junction circuit between conducting storage battery and auxiliary device, described first preset temperature is the first temperature of described rail traffic vehicles inside when normally starting;
Described storage battery, is connected with described auxiliary device, electric power required when running for providing described auxiliary device;
Described auxiliary device, be connected with described storage battery and the first preheating system control part respectively, the condition needed for electrical network is connected to, electric power required when described electrical network is for providing described first preheating system to run for described first preheating system under providing cryogenic conditions;
Described first preheating system, is connected with described auxiliary device, for heating the first equipment of described rail traffic vehicles under described mains supply drives when connecting described electrical network;
Wherein, the operating voltage of described auxiliary device is lower than the operating voltage of described first preheating system;
Described preheating system also comprises:
Detecting device, for detecting the internal temperature of described rail traffic vehicles;
Read out instrument, show lower than during described first preset temperature for the testing result when described detecting device, and/or when the testing result of described detecting device shows higher than during the second preset temperature, described second preset temperature is the second temperature of described rail traffic vehicles inside when normally starting, and described second preset temperature is more than or equal to described first preset temperature;
Wherein, described detecting device is connected with described storage battery respectively with described read out instrument, for operationally obtaining required electric power.
2. rail traffic vehicles preheating system according to claim 1, is characterized in that, described preheating system also comprises:
Fender guard; for when detect the time of heat of described first preheating system exceed default time of heat and/or when detect the heating-up temperature of described first preheating system more than the second preset temperature and/or monitor that described first preheating system is short-circuited, ground connection or overcurrent time, cut off and power to described first preheating system.
3. rail traffic vehicles preheating system according to claim 1, is characterized in that, described first preheating system comprises the heating arrangement of warm air system, main variable flow cabinet, auxiliary converter cabinet, microcomputer control cabinet.
4. rail traffic vehicles preheating system according to claim 1, is characterized in that, described auxiliary device is compressor.
5. according to the rail traffic vehicles preheating system that claim 1 is stated, it is characterized in that, described read out instrument is light-emitting diode.
6. the rail traffic vehicles preheating system according to any one of Claims 1 to 5, it is characterized in that, described rail traffic vehicles preheating system also comprises the second preheating system, for heating the second equipment, described second preheating system is connected with described storage battery, and the operating voltage of described first preheating system is higher than the operating voltage of described second preheating system.
7. rail traffic vehicles preheating system according to claim 6, it is characterized in that, the operating voltage of described first preheating system is 220V, and the operating voltage of described second preheating system is 110V, and described second preheating system comprises the heating arrangement of read-out.
8. a rail traffic vehicles, is characterized in that, comprises the rail traffic vehicles preheating system according to any one of claim 1 ~ 7, and described second equipment comprises each read-out of described rail traffic vehicles, and described first equipment comprises converter cabinet.
9. rail traffic vehicles preheats a method, it is characterized in that, uses rail traffic vehicles preheating system according to claim 1, described in preheat method and comprise:
When the internal temperature monitoring described rail traffic vehicles is lower than described first preset temperature, junction circuit between conducting storage battery and auxiliary device, the first preheating system is provided to be connected to condition needed for electrical network to start described auxiliary device, described electrical network is for providing the electric power needed for described first preheating system, and described first preset temperature is the first temperature of described rail traffic vehicles inside when normally starting;
When described auxiliary device work is to Preset Time, described first preheating system is connected to described electrical network, heats to start first equipment of described first preheating system to described rail traffic vehicles.
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| CN201110243060.2A CN102951164B (en) | 2011-08-23 | 2011-08-23 | Track traffic vehicle preheating system and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110243060.2A CN102951164B (en) | 2011-08-23 | 2011-08-23 | Track traffic vehicle preheating system and method thereof |
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| CN102951164A CN102951164A (en) | 2013-03-06 |
| CN102951164B true CN102951164B (en) | 2015-04-08 |
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| US5012070A (en) * | 1989-05-25 | 1991-04-30 | Durkin-Reed, Inc. | Vehicle preheating system using existing vehicle heating system |
| US5115116A (en) * | 1989-05-25 | 1992-05-19 | Durkin-Reed, Inc. | Vehicle preheating system |
| CN101913353A (en) * | 2008-12-08 | 2010-12-15 | 福特全球技术公司 | System for controlling heating in a hybrid vehicle using a power source external to the hybrid vehicle |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006048194A1 (en) * | 2006-10-11 | 2008-04-30 | Webasto Ag | System with separate power supply device for additional heating |
| JP2010220407A (en) * | 2009-03-17 | 2010-09-30 | Mitsubishi Motors Corp | Device for drive and control of vehicle-mounted equipment in plug-in hybrid vehicle |
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2011
- 2011-08-23 CN CN201110243060.2A patent/CN102951164B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5012070A (en) * | 1989-05-25 | 1991-04-30 | Durkin-Reed, Inc. | Vehicle preheating system using existing vehicle heating system |
| US5115116A (en) * | 1989-05-25 | 1992-05-19 | Durkin-Reed, Inc. | Vehicle preheating system |
| CN101913353A (en) * | 2008-12-08 | 2010-12-15 | 福特全球技术公司 | System for controlling heating in a hybrid vehicle using a power source external to the hybrid vehicle |
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Address after: 037038 No.1 Qianjin Street, Pingcheng District, Datong City, Shanxi Province Patentee after: CRRC DATONG Co.,Ltd. Address before: 037038 No. 1, Daqing Road, Shanxi, Datong Patentee before: DATONG ELECTRIC LOCOMOTIVE Co.,Ltd. OF CNR |