CN102897177B - Head of anti-drag motor train unit - Google Patents
Head of anti-drag motor train unit Download PDFInfo
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- CN102897177B CN102897177B CN201210405665.1A CN201210405665A CN102897177B CN 102897177 B CN102897177 B CN 102897177B CN 201210405665 A CN201210405665 A CN 201210405665A CN 102897177 B CN102897177 B CN 102897177B
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- motor train
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
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Abstract
The invention provides a kind of Head of anti-drag motor train unit, this headstock is surrounded jointly by point, end face and both walls and in streamline contour, described point has a cavity; Described end face has at least one first passage, both walls all has at least one second channel, described cavity has ventilation inlet and exhaust outlet, described first passage and second channel are all along described headstock length direction, and described first passage and second channel all have import and outlet, described import is all communicated with this cavity exhaust outlet, and described outlet is all communicated with air; Valve is equipped with in described second channel.Utilize the flow direction of first passage and second channel correct guidance air-flow, reduce the running resistance of streamline contour motor train unit train, the pressure reduction of vehicle both sides when improving motor train unit intersection by the opening and closing controlling second channel inner valve, improves motor train unit operation stability.
Description
Technical field
The present invention relates to technology of track traffic, particularly relate to a kind of Head of anti-drag motor train unit.
Background technology
Along with improving constantly of motor train unit speed, the resistance of motor train unit will obviously increase, when motor train unit speed reaches 200km/h, air resistance accounts for and runs about 70% of total drag, when motor train unit speed reaches 300km/h, air resistance accounts for and runs about 85% of total drag, and the major part of the energy consumed during motor train unit run all is used for overcoming air resistance.
During the EMU of exercising in opposite directions intersection on the line, produce strong disturbance to surrounding air, in the moment that headstock and the tailstock of two cars pass through, the head of motor train unit and the inner side side wall surface pressure of two cars can produce strong transient change.The pressure wave that intersection produces affects motor train unit safety in operation, stability and traveling comfort.
Present stage is for the drag reduction technology of road transport, be 200610047637.1 patent documents being called " the aerodynamic force drag reduction method of bluff-body vehicle " see application number, the method is that a through hole is opened on bottom in bluff-body vehicle body or top, for the pressure before and after balanced car body provides a gas channel 30, " high pressure " gas of Vehicular body front is made to be flow to the vehicle bottom region of " low pressure " relatively by this hole.
This patented method only considered the aerodynamic force drag reduction of bluff-body vehicle, does not do to consider for air foil, and existing Motor train unit locomotive is jointly surrounded by point, end face and both walls and is streamline contour; Prior art only considers pressure drag before and after vehicle, does not consider to utilize the both sides pressure reduction during intersection of aerodynamic refinement vehicle on the impact of vehicle smoothness.
Summary of the invention
The invention provides a kind of Head of anti-drag motor train unit, for overcoming defect of the prior art, the aerodynamic force of motor train unit in high-speed cruising process realizing the linear car body of convection current carries out drag reduction, not only reduce pressure reduction before and after vehicle, and both sides pressure reduction when utilizing the intersection of aerodynamic refinement vehicle, reduce the impact that both sides pressure reduction brings vehicle smoothness.
The invention provides a kind of Head of anti-drag motor train unit, this headstock is surrounded jointly by point, end face and both walls and in streamline contour, described point has a cavity; Described end face has at least one first passage, both walls all has at least one second channel, described cavity has ventilation inlet and exhaust outlet, described first passage and second channel are all along described headstock length direction, and described first passage and second channel all have import and outlet, described import is all communicated with this cavity exhaust outlet, and described outlet is all communicated with air; Valve is equipped with in described second channel.
The technique effect of one aspect of the present invention is: the flow direction utilizing first passage and second channel correct guidance air-flow, reduce the running resistance of streamline contour motor train unit train, the pressure reduction of vehicle both sides when improving motor train unit intersection by the opening and closing controlling second channel inner valve, improves motor train unit operation stability.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art;
The front view of the Head of anti-drag motor train unit that Fig. 2 embodiment of the present invention provides;
Fig. 3 is the birds-eye view of Fig. 2;
Fig. 4 is the close-up schematic view of Fig. 2;
Fig. 5 is the close-up schematic view of Fig. 3;
State reference schematic diagram when Fig. 6 is two car intersection.
Detailed description of the invention
As shown in figures 2-6, the embodiment of the present invention provides a kind of Head of anti-drag motor train unit, and this headstock 2 is surrounded jointly by point, end face and both walls and in streamline contour, point has a cavity 10; End face has at least one first passage, both walls all has at least one second channel, cavity 10 has ventilation inlet 9 and exhaust outlet, first passage and second channel are all along headstock length direction, and first passage and second channel all have import and outlet, import is all communicated with this exhaust outlet, and outlet is all communicated with air; Valve 7 is equipped with in second channel.
First passage in the present embodiment comprises left side first passage 14 and right side first passage 13, right side first passage 13 has import 11 and outlet 15, left side first passage 14 has import 12 and outlet 16, second channel in the present embodiment comprises left side second channel 20 and right side second channel 19, right side second channel 19 has import 17 and outlet 21, left side second channel 20 has import 18 and outlet 22, all has the valve 7 for closing its passage in left side second channel 20 and right side second channel 19.Right side second channel 19 export 21 and left side second channel 20 export 22 all near side window 4, left side second channel 20 and right side second channel 19 are all positioned at above pilot 8.
The Head of anti-drag motor train unit that the technical program provides, in motor train unit operational process, air draught enters cavity 10 through ventilation inlet 9, import again through the exhaust outlet of cavity 10 and the import of first passage and second channel enters first passage and second channel respectively, major part air-flow enters air through first passage outlet, and sub-fraction air-flow enters air through second channel outlet.
When two motor train unit intersections, aerodynamic force between two cars is larger, it is larger by the air pressure inside lateral that the inner side side wall that two headstocks are adjacent bears, the air pressure that side wall outside two headstocks bears is relatively little, this can cause headstock inside by force unbalance, the second channel that the outside side wall of two headstocks is arranged is closed by valve 7, see Fig. 6, the direction of arrow is the travel direction of Motor train unit locomotive, namely the left side second channel 20 of the left side second channel 20 of the headstock travelled and the headstock to right travel is closed left, compensate for air pressure inside motor train unit, the air pressure outside by inner side that motor train unit are obtained, the air pressure outside by inner side that such motor train unit obtain with tended to balance by the power inside lateral, strengthen the stability of motor train unit.
The Head of anti-drag motor train unit of above-described embodiment utilizes the flow direction of correct guidance air-flow, reduce the running resistance of streamline contour motor train unit train, the pressure reduction of vehicle both sides when improving motor train unit intersection by the opening and closing controlling second channel inner valve, improves motor train unit operation stability.
End face has and is communicated with the opening 5 of driver's cab, first passage to be arranged in driver's cab and this driver's room conditioning bleeding point of first passage outlet.Concrete left side first passage 14 export 16 and right side first passage 13 export 15 and be all communicated with this driver's room conditioning bleeding point, air through left side first passage 14 export 16 and right side first passage 13 export 15 and pass into driver's room conditioning bleeding point, ventilate for driver's cab, air is entered again through opening 5, reduce the malleation of headstock front end, compensate for the negative pressure of driver's room conditioning afterbody.Driver's cab opening 5 is positioned at above side door 6 in an embodiment.
First passage is sticked on end face inwall.Second channel is sticked on both walls inwall.Left side second channel 20 is located on the inner wall of left side, right side second channel 19 is located on right-side wall inwall, first be located on inwall and easily fix, secondly, be sticked with its fixing inwall and be conducive to reduction and take up room, the train nose shape that end face and side wall surround is streamline contour, contributes to reducing skin resistance.
End face has vehicle window 3, first passage is positioned at outside vehicle window 3.As shown in Figure 5, left side first passage 14 is positioned on the left of vehicle window 3, and right side first passage 13 is positioned on the right side of vehicle window 3.
First passage with second channel all in horn-like, and first passage to export relative first passage import comparatively large, it is larger that second channel exports relative second channel import.Be conducive to air draft, and it is stressed to reduce vias inner walls.
In order to excessively purify the air entered in cavity, the ventilation inlet 9 of cavity arranges filter screen.Because the air-flow in tailstock type cavity is flowed out by opening of sieve, certain dissipation effect is played to the eddy current of the motor train unit tailstock, reduce the eddy resistance of the tailstock.
The Head of anti-drag motor train unit that the embodiment of the present invention provides, extra power need not be consumed, take simple structural measure can reduce streamline contour Motor train unit locomotive end face malleation, thus reduce headstock pressure drag, be positioned at the Motor train unit locomotive of the tailstock, because the tailstock is contrary with headstock direction, then at the tailstock, sidewall register becomes ventilation inlet, and the motor train unit tailstock then imports air-flow by tailstock side wall inlet and compensates tailstock negative pressure, thus reduces tailstock pressure drag.And close and open motor train unit left and right side wall passage by simple structure measure, regulate left and right sides difference of pressure during meeting, strengthen train operation stability.Reduce the overall operation resistance of motor train unit, save the energy.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments 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 some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (6)
1. a Head of anti-drag motor train unit, this headstock is surrounded jointly by point, end face and both walls and in streamline contour, it is characterized in that, described point has a cavity; Described end face has at least one first passage, both walls all has at least one second channel, described cavity has ventilation inlet and exhaust outlet, described first passage and second channel are all along described headstock length direction, and described first passage and second channel all have import and outlet, described import is all communicated with this exhaust outlet, and described outlet is all communicated with air; Valve is equipped with in described second channel; Described end face has and is communicated with the opening of driver's cab, described first passage to be arranged in described driver's cab and this driver's room conditioning bleeding point of first passage outlet.
2. Head of anti-drag motor train unit according to claim 1, is characterized in that, described first passage is sticked on end face inwall.
3. Head of anti-drag motor train unit according to claim 1, is characterized in that, described second channel is sticked on both walls inwall.
4. Head of anti-drag motor train unit according to claim 1, is characterized in that, described end face has vehicle window, and described first passage is positioned at described vehicle window outside.
5. the Head of anti-drag motor train unit according to any one of claim 1-4, is characterized in that, described first passage and second channel are all in horn-like, and first passage outlet is larger than first passage import, and second channel outlet is larger than second channel import.
6. the Head of anti-drag motor train unit according to any one of claim 1-4, is characterized in that, described ventilation inlet is provided with filter screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210405665.1A CN102897177B (en) | 2012-10-22 | 2012-10-22 | Head of anti-drag motor train unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210405665.1A CN102897177B (en) | 2012-10-22 | 2012-10-22 | Head of anti-drag motor train unit |
Publications (2)
| Publication Number | Publication Date |
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| CN102897177A CN102897177A (en) | 2013-01-30 |
| CN102897177B true CN102897177B (en) | 2016-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210405665.1A Active CN102897177B (en) | 2012-10-22 | 2012-10-22 | Head of anti-drag motor train unit |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019127205A1 (en) * | 2017-12-26 | 2019-07-04 | 中车长春轨道客车股份有限公司 | Rail train and side wall thereof |
| JP6912396B2 (en) * | 2018-01-26 | 2021-08-04 | 株式会社日立製作所 | Railroad vehicle |
| CN108263405A (en) * | 2018-01-31 | 2018-07-10 | 史永奇 | A kind of drag reduction facility of bullet train |
| CN108930553A (en) * | 2018-07-27 | 2018-12-04 | 武汉工程大学 | Bullet train tunnel compressional wave relief features |
| CN110329288A (en) * | 2019-07-30 | 2019-10-15 | 东莞开道科技有限公司 | Railcar |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201646727U (en) * | 2010-04-03 | 2010-11-24 | 南车青岛四方机车车辆股份有限公司 | Protection device for pressure inside high-speed railway vehicle |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05262226A (en) * | 1992-03-17 | 1993-10-12 | Yasuaki Kohama | Stabilizing device for travel of track travel high speed vehicle such as train |
| JPH08183451A (en) * | 1994-12-28 | 1996-07-16 | Hideyuki Sako | Stabilizer in high speed track vehicle |
| JP4243657B2 (en) * | 1998-04-17 | 2009-03-25 | 川崎重工業株式会社 | Body structure of the leading railway |
| JP2005225239A (en) * | 2003-12-25 | 2005-08-25 | Hitachi Ltd | Railway vehicle and method for operating vehicle |
| CN101138991A (en) * | 2006-09-06 | 2008-03-12 | 沈阳航空工业学院 | Aerodynamic resistance reduction method of the vehicle with blunt-tail |
| WO2009092217A1 (en) * | 2007-12-27 | 2009-07-30 | Xiaoyi Zhu | A fluid motion device |
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- 2012-10-22 CN CN201210405665.1A patent/CN102897177B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201646727U (en) * | 2010-04-03 | 2010-11-24 | 南车青岛四方机车车辆股份有限公司 | Protection device for pressure inside high-speed railway vehicle |
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| CN102897177A (en) | 2013-01-30 |
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Address after: 063035 Hebei province Fengrun District Tangshan City Road No. 3 factory Patentee after: CRRC TANGSHAN CO., LTD. Address before: 063035 Hebei province Fengrun District Tangshan City Road No. 3 factory Patentee before: Tangshan Railway Carriage Co., Ltd. |
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