CN203721428U - Traction transformer cooling system for intercity CRH (China Railway High-speed) train - Google Patents
Traction transformer cooling system for intercity CRH (China Railway High-speed) train Download PDFInfo
- Publication number
- CN203721428U CN203721428U CN201320852083.8U CN201320852083U CN203721428U CN 203721428 U CN203721428 U CN 203721428U CN 201320852083 U CN201320852083 U CN 201320852083U CN 203721428 U CN203721428 U CN 203721428U
- Authority
- CN
- China
- Prior art keywords
- bearing structure
- structure beam
- cooling system
- oil radiator
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The utility model discloses a traction transformer cooling system for the intercity CRH (China Railway High-speed) train. The traction transformer cooling system comprises a bearing structural beam I, a bearing structural beam II and a fan casing, wherein a fan set is arranged in the fan casing. The cooling system also comprises a side wind inlet cylinder I, an oil radiator I, a transition wind cylinder I and a filter I which are sequentially and fixedly connected with one end of the fan casing, and is characterized in that the two sides of the side wind inlet cylinder I are respectively provided with side wind inlet cylinder lifting seats I, and the side wind inlet cylinder I is respectively and fixedly arranged on the bearing structural beam I and the bearing structural beam II through the side wind inlet cylinder lifting seats I at both sides; oil radiator lifting seats I are respectively arranged at the two sides of the oil radiator I, and the oil radiator I is respectively and fixedly arranged on the bearing structural beam I and the bearing structural beam II through the oil radiator lifting seats I at both sides. The oil radiator and the side wind inlet cylinder are respectively and independently connected with the bearing structural beams, so that the cooling system is conveniently disassembled, assembled, operated and maintained.
Description
Technical field
The utility model relates to heat transfer technology field, specifically a kind of intercity motor train unit traction transformer cooling system.
Background technology
For meeting China's regional economy fast development and the requirement of group of cities to inter-city rail transit, intercity motor train unit is arisen at the historic moment as the novel means of transportation of one, has that capacity is large, start and stop speed is fast, boarding is convenient and swift, a feature such as ride comfort, safe and reliable, energy-conserving and environment-protective.
Intercity motor train unit traction transformer cooling system described in the utility model cooling for the intercity motor train unit traction transformer of intercity motor train unit core component of present stage just considers that some problems that existing motor train unit cooling system exists have carried out brand-new design simultaneously.
Due to domestic track traffic industry application environment harshness, in air, there are the foreign material such as dust, catkin, plastics, the motor train unit traction transformer cooling system air filtration measure of existing similar structures is perfect not to the utmost, very easily make cooling system core component radiator in use build up above foreign material, stop up radiator, cause cooling channel resistance to increase, cooler cooling capacity is reduced, and then the useful life of having reduced transformer.
Utility model content
Not quick detachable in order to solve existing intercity motor train unit traction transformer cooling system Integral connection structure, use maintenance not convenient, air filtration measure imperfection, the problems such as the easy dust stratification dirt of radiator, the utility model provides a kind of traction transformer cooling system of intercity motor train unit, adopts the lifting of bearing structure beam, dismountable blower fan group, and by filter is set before radiator, thereby realize easy accessibility, be easy to safeguard effect.
For achieving the above object, the technical solution adopted in the utility model is:
Intercity motor train unit traction transformer cooling system, comprise bearing structure beam I, bearing structure beam II and fan box, in described fan box, be provided with blower fan group, described cooling system is also included in the side air intake cylinder I that described fan box one end is fixedly connected sequentially, oil radiator I, transition air duct I and filter I, described bearing structure beam I and bearing structure beam II lay respectively at top, described fan box two sides, it is characterized in that:
Described side air intake cylinder I both sides are respectively equipped with side air intake cylinder lifting seat I, described side air intake cylinder I is separately fixed in described bearing structure beam I and described bearing structure beam II by the described side air intake cylinder lifting seat I of both sides, described oil radiator I both sides are respectively equipped with oil radiator lifting seat I, and described oil radiator I is separately fixed in described bearing structure beam I and bearing structure beam II by the described oil radiator lifting seat I of both sides.
Further, described blower fan group is without volute casing centrifugal blower fan group, described blower fan group comprises motor and is fixed on the impeller I on described motor drive motors axle by reel I, described impeller I is connected with current collector I away from a side of described motor, and described current collector I is connected with described side air intake cylinder I; On described fan box, be fixed with bearing support framework, between described bearing support framework and described fan box, be also fixed with vibration absorber, described motor is fixedly connected on described bearing support framework by motor mount, this connected mode, compact conformation, be easy to dismounting, O&M is convenient.
Further, in the time that described motor is motor for double-ended drive, on the other end of the drive motors axle of described motor, be also connected with impeller II, impeller II is connected by reel II with motor, described impeller II is connected with current collector II away from a side of motor, and described blower fan group is the symmetrical structure centered by described motor for double-ended drive; The other end of the corresponding described fan box side air intake cylinder II that has been fixedly connected sequentially, oil radiator II, transition air duct II and filter II, be described side air intake cylinder I and side air intake cylinder II, described oil radiator I and oil radiator II, described transition air duct I and transition air duct II, described filter I becomes symmetric arrays respectively with filter II centered by described fan box.
Described side air intake cylinder II both sides are provided with side air intake cylinder lifting seat II, described side air intake cylinder II is separately fixed in described bearing structure beam I and described bearing structure beam II by described side air intake cylinder lifting seat II, described oil radiator II both sides are provided with oil radiator lifting seat II, and described oil radiator II is separately fixed in described bearing structure beam I and bearing structure beam II by described oil radiator lifting seat II.
Further, described bearing structure beam I and described bearing structure beam II adopt low temperature resistant, high-strength material is made, described bearing structure beam I and described bearing structure beam II are U-shaped perpendicular to the cross section of beam length direction, the two ends of described bearing structure beam I and described bearing structure beam II are respectively equipped with gusset, this structure can play good support and booster action, improve the reliability of whole cooling system, in described bearing structure beam I and described bearing structure beam II, be respectively equipped with multiple for fixing bolt hole, can intercity motor train unit traction transformer cooling system be fixed in motor train unit or on traction transformer by the bolt matching with described bolt hole.
Further, described oil radiator I is plate-fin structure, and the ventilation gas fin of described plate-fin structure is continuous non-incision ripple struction, has improved stain resistance ability, and described oil radiator volume is little, lightweight, heat-sinking capability is strong; Described ventilation gas fin is provided with anti-corrosion layer, and anti-corrosion layer adopts spraying, oxidation, and one or more in the treatment process such as plated film make.
Further, described oil radiator lifting seat I adopts high-strength aluminum alloy material bending to form, and described oil radiator lifting seat I and described oil radiator I, by being welded to connect, have improved the intensity of hoisting structure.
Further, a described side air intake cylinder lifting I adopts the bending of high strength steel material to form, and a described side air intake cylinder lifting seat I is also provided with bolt hole, and when connection is installed, position is adjustable, is convenient to install.
Further, described filter I is decanter type air cleaner, the front end of described decanter type air cleaner is provided with screen pack, this structure has improved greatly to airfiltering efficiency, can effectively reduce the pollution of foreign material to described oil radiator I in air, thereby minimizing wash number, has reduced O&M cost, the material of described screen pack at least adopts the one in stainless steel plate mesh, stainless steel cloth or filter cloth.
Further, described impeller I is welded by circular arc shroud, backward bent vane and hub disk, and throughput is large, efficiency is high, noise is low, reliability is high.
Further, described bearing structure beam I or bearing structure beam II are provided with the electric connector for connecting motor-car power supply, described electric connector can need to be connected on the diverse location of bearing structure beam I or bearing structure beam II according to concrete vehicle and client, facilitates described electric connector to be connected with motor-car power supply.
Compared with prior art, the oil radiator of the intercity motor train unit traction transformer cooling system of the utility model, side air intake cylinder are independent to be separately connected with bearing structure beam, is convenient to dismounting, and O&M is convenient.Simultaneously oil radiator is provided with filter, can effectively reduce dirtyly, alleviates the dirty impact on heat dispersion.Whole cooling system heat-sinking capability is high, compact conformation, volume is little, lightweight, noise is low, easy accessibility, O&M convenient.
The utility model can extensively be promoted in fields such as intercity motor train unit traction transformer cooling systems for the foregoing reasons.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is perspective view of the present utility model.
Fig. 2 is A-A cutaway view in Fig. 1 of the present utility model.
Wherein, 1, bearing structure beam I 2, bearing structure beam II 3, filter I 4, excessively air duct I 5, oil radiator I 6, side air intake cylinder I 7, fan box 8, electric connector 9, motor 10, reel I 11, impeller I 12, current collector I 13, vibration absorber 14, bearing support framework 15, filter II 16, excessively air duct II 17, oil radiator II 18, side air intake cylinder II 19, reel II 20, impeller II 21, current collector II 22, an oil radiator lifting seat I 23, an oil radiator lifting seat II 24, a side air intake cylinder lifting seat I 25, a side air intake cylinder lifting seat II.
Embodiment
Intercity motor train unit traction transformer cooling system as depicted in figs. 1 and 2, comprise bearing structure beam I 1, bearing structure beam II 2 and fan box 7, in described fan box 7, be provided with blower fan group, described blower fan group is without volute casing centrifugal blower fan group, on described fan box 7, be fixed with bearing support framework 14, between described bearing support framework 14 and described fan box 7, be also fixed with vibration absorber 13, described motor 9 is fixedly connected on described bearing support framework by motor mount, the motor 9 of described blower fan group is motor for double-ended drive, one end of the drive motors axle of described motor 9 is connected with described impeller I 11, described impeller I 11 is connected with described current collector I 12 away from a side of motor 9, described current collector I 12 is connected with side air intake cylinder I 6, the other end of the drive motors axle of described motor 9 is connected with described impeller II 20, described impeller II 20 is connected with described current collector II 21 away from a side of motor 9, described current collector II 21 is connected with side air intake cylinder II 18, described impeller I 11 and impeller II 20 are circular arc shroud, backward bent vane and hub disk are welded, throughput is large, efficiency is high, noise is low, reliability is high.
Described cooling system is also included in the side air intake cylinder I 6 that described fan box 7 one end are fixedly connected sequentially, oil radiator I 5, transition air duct I 4 and filter I 3, and the side air intake cylinder II 18 that is fixedly connected sequentially of described fan box 7 other ends, oil radiator II 17, transition air duct II 16 and filter II 15.
Described bearing structure beam I 1 and bearing structure beam II 2 lay respectively at described fan box 7 tops, two sides.
Described side air intake cylinder I 6 upper ends, two side are connected with respectively side air intake cylinder lifting seat I 24 by bolt, described side air intake cylinder I 6 is separately fixed in described bearing structure beam I 1 and described bearing structure beam II 2 by the described side air intake cylinder lifting seat I 24 of both sides, described oil radiator I 5 two sides are welded with respectively oil radiator lifting seat I 22, described oil radiator I 5 is separately fixed in described bearing structure beam I 1 and bearing structure beam II 2 by the described oil radiator lifting seat I 22 of both sides, described bearing structure beam I 1 and bearing structure beam II 2 not with described transition air duct I 4, filter I 3 is connected with fan box 7.
Described side air intake cylinder II 18 upper ends, two side are connected with respectively side air intake cylinder lifting seat II 25 by bolt, described side air intake cylinder II 18 is separately fixed in described bearing structure beam I 1 and described bearing structure beam II 2 by the described side air intake cylinder lifting seat II 25 of both sides, described oil radiator II 17 two sides are welded with respectively oil radiator lifting seat II 23, described oil radiator II 17 is separately fixed in described bearing structure beam I 1 and bearing structure beam II 2 by the described oil radiator lifting seat II 23 of both sides, described bearing structure beam I 1 and bearing structure beam II 2 not with described transition air duct II 16, filter II 15 is connected with fan box 7.
Described bearing structure beam I 1 and bearing structure beam II 2 are by low temperature resistant, high strength U-shaped steel, the opening direction of described bearing structure beam I 1 and described bearing structure beam II 2 described fan box 7 dorsad, described bearing structure beam I 1 and the two ends of described bearing structure beam II 2 are respectively provided with gusset, this structure can play good support and booster action, improves the reliability of whole cooling system.In described bearing structure beam I 1 and described bearing structure beam II 2, be respectively equipped with 12 bolts hole, can intercity motor train unit traction transformer cooling system be fixed in motor train unit or on traction transformer by the bolt matching with described bolt hole.
Described oil radiator I 5 and radiator II 17 are plate-fin structure, and the ventilation gas fin of described plate-fin structure is continuous non-incision ripple struction, has improved stain resistance ability, and described oil radiator I 5 and radiator II 17 volumes are little, lightweight, heat-sinking capability is strong; Described ventilation gas fin is provided with anti-corrosion layer, and this anti-corrosion layer makes by a kind of method in the physical and chemical process such as spraying, oxidation, plated film.
Described filter I 3 and filter II 15 are decanter type air cleaner, the front end of described decanter type air cleaner is provided with screen pack, this structure has improved greatly to airfiltering efficiency, can effectively reduce the pollution of foreign material to described decanter type air cleaner in air, thereby minimizing wash number, reduced O&M cost, the material of described screen pack adopts stainless steel cloth.
Described filter I 3 and filter II 15 are same specification filter; Described excessive air duct I 4 and excessively air duct II 16 are the excessive air duct of same specification; Described oil radiator I 5 and oil radiator II 17 are same specification oil radiator: described side air intake cylinder I 6 and side air intake cylinder II 18 are same specification side air intake cylinder; Described current collector I 12 and current collector II 21 are same specification current collector; Described impeller I 11 and impeller II 20 are same specification impeller; Described reel I 10 and reel II 19 are same specification reel.
Described bearing structure beam II 2 is provided with the electric connector 8 for connecting motor-car power supply, and described electric connector 8 is near described oil radiator II 17 upper ends, side, and described electric connector 8 one wiring holes are connected with motor 9 power supplys, and another wiring hole is used for connecting motor-car power supply.
The above; it is only preferably embodiment of the utility model; but protection range of the present utility model is not limited to this; any be familiar with those skilled in the art the utility model disclose technical scope in; be equal to replacement or changed according to the technical solution of the utility model and utility model design thereof, within all should being encompassed in protection range of the present utility model.
Claims (10)
1. intercity motor train unit traction transformer cooling system, comprise bearing structure beam I (1), bearing structure beam II (2) and fan box (7), described fan box is provided with blower fan group in (7), described cooling system is also included in the side air intake cylinder I (6) that described fan box (7) one end is fixedly connected sequentially, oil radiator I (5), transition air duct I (4) and filter I (3), is characterized in that:
Described side air intake cylinder I (6) both sides are respectively equipped with side air intake cylinder lifting seat I (24), described side air intake cylinder I (6) is separately fixed in described bearing structure beam I (1) and described bearing structure beam II (2) by the described side air intake cylinder lifting seat I (24) of both sides, described oil radiator I (5) both sides are respectively equipped with oil radiator lifting seat I (22), and described oil radiator I (5) is separately fixed in described bearing structure beam I (1) and bearing structure beam II (2) by the described oil radiator lifting seat I (22) of both sides.
2. intercity motor train unit traction transformer cooling system according to claim 1, it is characterized in that: described blower fan group is without volute casing centrifugal blower fan group, described blower fan group comprises motor (9) and is connected to the impeller I (11) on described motor (9) drive motors axle by reel I (10), described impeller I (11) is connected with current collector I (12) away from a side of described motor (9), and described current collector I (12) is connected with described side air intake cylinder I (6); On described fan box (7), be fixed with bearing support framework (14), between described bearing support framework (14) and described fan box (7), be also fixed with vibration absorber (13), described motor (9) is fixedly connected on described bearing support framework (14) by motor mount.
3. intercity motor train unit traction transformer cooling system according to claim 2, it is characterized in that: in the time that described motor (9) is motor for double-ended drive, on the other end of the drive motors axle of described motor (9), be also connected with impeller II (20), impeller II (20) is connected by reel II (19) with motor (9), and described impeller II (20) is connected with current collector II (21) away from a side of motor (9); The other end of corresponding described fan box (7) be fixedly connected sequentially side air intake cylinder II (18), oil radiator II (17), transition air duct II (16) and filter II (15).
4. intercity motor train unit traction transformer cooling system according to claim 1, it is characterized in that: described bearing structure beam I (1) and described bearing structure beam II (2) adopt low temperature resistant, high-strength material is made, the cross section of described bearing structure beam I (1) and described bearing structure beam II (2) is U-shaped, described bearing structure beam I (1) and the two ends of described bearing structure beam II (2) are respectively equipped with gusset, in described bearing structure beam I (1) and described bearing structure beam II (2), be respectively equipped with multiple bolts hole for fixing intercity motor train unit traction transformer cooling system.
5. intercity motor train unit traction transformer cooling system according to claim 1, it is characterized in that: described oil radiator I (5) is plate-fin structure, the ventilation gas fin of described plate-fin structure is continuous non-incision ripple struction, and described ventilation gas fin is provided with anti-corrosion layer.
6. intercity motor train unit traction transformer cooling system according to claim 1, it is characterized in that: described oil radiator lifting seat I (22) adopts high-strength aluminum alloy material bending to form, and described oil radiator lifting seat I (22) and described oil radiator I (5) are by being welded to connect.
7. intercity motor train unit traction transformer cooling system according to claim 1, is characterized in that: described side air intake cylinder lifting seat I (24) adopts the bending of high strength steel material to form.
8. intercity motor train unit traction transformer cooling system according to claim 1, is characterized in that: described filter I (3) is decanter type air cleaner, and the front end of described decanter type air cleaner is provided with screen pack.
9. intercity motor train unit traction transformer cooling system according to claim 2, is characterized in that: described impeller I (11) is welded by circular arc shroud, backward bent vane and hub disk.
10. intercity motor train unit traction transformer cooling system according to claim 1, is characterized in that: described bearing structure beam I (1) or described bearing structure beam II (2) are provided with the electric connector (8) for connecting motor-car power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320852083.8U CN203721428U (en) | 2013-12-18 | 2013-12-18 | Traction transformer cooling system for intercity CRH (China Railway High-speed) train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320852083.8U CN203721428U (en) | 2013-12-18 | 2013-12-18 | Traction transformer cooling system for intercity CRH (China Railway High-speed) train |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203721428U true CN203721428U (en) | 2014-07-16 |
Family
ID=51160566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320852083.8U Withdrawn - After Issue CN203721428U (en) | 2013-12-18 | 2013-12-18 | Traction transformer cooling system for intercity CRH (China Railway High-speed) train |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203721428U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103646752A (en) * | 2013-12-18 | 2014-03-19 | 中国北车集团大连机车研究所有限公司 | Traction transformer cooling system of intercity CRH (China railway high-speed) |
| CN104405666A (en) * | 2014-10-21 | 2015-03-11 | 中国航空工业集团公司洛阳电光设备研究所 | Blower device for removing water vapor of detection equipment |
| CN105197025A (en) * | 2015-11-05 | 2015-12-30 | 中国北车集团大连机车研究所有限公司 | Cooling tower shared by multiple systems of electric locomotive |
| CN105321664A (en) * | 2015-12-09 | 2016-02-10 | 中车大连机车研究所有限公司 | Inclined type cooling unit for CRH (China Railway High-Speed) train traction transformer |
| CN105609236A (en) * | 2016-01-19 | 2016-05-25 | 株洲南车时代电气股份有限公司 | Auxiliary transformer installation device for train converter |
| CN114974816A (en) * | 2022-06-07 | 2022-08-30 | 中交机电工程局有限公司 | Ventilation device of magnetic control reactor and magnetic control reactor |
-
2013
- 2013-12-18 CN CN201320852083.8U patent/CN203721428U/en not_active Withdrawn - After Issue
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103646752A (en) * | 2013-12-18 | 2014-03-19 | 中国北车集团大连机车研究所有限公司 | Traction transformer cooling system of intercity CRH (China railway high-speed) |
| CN103646752B (en) * | 2013-12-18 | 2016-01-27 | 中国北车集团大连机车研究所有限公司 | Intercity motor train unit traction transformer cooling system |
| CN104405666A (en) * | 2014-10-21 | 2015-03-11 | 中国航空工业集团公司洛阳电光设备研究所 | Blower device for removing water vapor of detection equipment |
| CN105197025A (en) * | 2015-11-05 | 2015-12-30 | 中国北车集团大连机车研究所有限公司 | Cooling tower shared by multiple systems of electric locomotive |
| CN105197025B (en) * | 2015-11-05 | 2017-08-08 | 中国北车集团大连机车研究所有限公司 | Electric locomotive shared by multiple systems cooling tower |
| CN105321664A (en) * | 2015-12-09 | 2016-02-10 | 中车大连机车研究所有限公司 | Inclined type cooling unit for CRH (China Railway High-Speed) train traction transformer |
| CN105321664B (en) * | 2015-12-09 | 2017-08-08 | 中车大连机车研究所有限公司 | Motor train unit traction transformer tilting cooling unit |
| CN105609236A (en) * | 2016-01-19 | 2016-05-25 | 株洲南车时代电气股份有限公司 | Auxiliary transformer installation device for train converter |
| CN105609236B (en) * | 2016-01-19 | 2017-11-14 | 株洲南车时代电气股份有限公司 | A kind of train current transformer auxiliary transformer erecting device |
| CN114974816A (en) * | 2022-06-07 | 2022-08-30 | 中交机电工程局有限公司 | Ventilation device of magnetic control reactor and magnetic control reactor |
| CN114974816B (en) * | 2022-06-07 | 2023-08-01 | 中交机电工程局有限公司 | Ventilation device of magnetic control reactor and magnetic control reactor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103646752B (en) | Intercity motor train unit traction transformer cooling system | |
| CN203721428U (en) | Traction transformer cooling system for intercity CRH (China Railway High-speed) train | |
| CN104201901B (en) | Cooling unit for traction converter | |
| WO2014190688A1 (en) | Cooling unit for traction system | |
| CN105151052B (en) | A kind of new meter-gage AC drive diesel locomotive | |
| CN204884783U (en) | High -power electric locomotive traction transformer and oil circulative cooling system thereof | |
| CN201461536U (en) | Centrifugal blower unit without volute casing for electric vehicle unit integrated cooling module | |
| CN105109499A (en) | Top-mounted water cooling device for power distributed type diesel multiple unit | |
| CN202940721U (en) | CRH380BL traction converter cooling system | |
| CN102536857A (en) | Cooling fan for traction converter of high-speed electric locomotive | |
| CN111806213B (en) | Electric motor coach and combined mounting bracket thereof | |
| CN102916567A (en) | Cooling system for CRH380BL traction converter | |
| CN101763935B (en) | Oil cooler of traction transformer of electric motor unit | |
| CN205034113U (en) | Water -chilling plant installs with top in power decentralized formula diesel rail motor car group | |
| CN201932159U (en) | Hanging type framework for bullet train cooler | |
| CN207491436U (en) | A kind of high-speed EMUs cooling device | |
| CN107592780B (en) | Cooling device for high-speed motor train unit | |
| CN215465196U (en) | Airflow uniform distribution device of electric dust collector | |
| CN205064324U (en) | Cooling of EMUs traction motor is with two air -out formula centrifugal fan | |
| CN205149864U (en) | Novel meter gauge exchange transmission diesel locomotive | |
| CN108447657B (en) | Overhead multi-channel air inlet parallel radiating motor train unit traction transformer cooling device | |
| CN203035610U (en) | High flow and high aspect ratio blade axial flow fan | |
| CN207579593U (en) | Articulated truck power drive system | |
| CN105370597A (en) | Parallel and series hybrid type axial flow fan set for cooling unit of electric multiple unit | |
| CN203533987U (en) | Parallel flow condenser assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140716 Effective date of abandoning: 20160127 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |