CN102897177A - Head of anti-drag motor train unit - Google Patents
Head of anti-drag motor train unit Download PDFInfo
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- CN102897177A CN102897177A CN2012104056651A CN201210405665A CN102897177A CN 102897177 A CN102897177 A CN 102897177A CN 2012104056651 A CN2012104056651 A CN 2012104056651A CN 201210405665 A CN201210405665 A CN 201210405665A CN 102897177 A CN102897177 A CN 102897177A
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- channel
- motor train
- train unit
- passage
- headstock
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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
Abstract
The invention provides a head of an anti-drag motor train unit. The head is formed by encircling a sharp end part, a top surface and two sidewalls and is like a stream line, wherein the sharp end part is provided with a cavity; the top surface is provided with at least a first channel; each sidewall is provided with at least a second channel; the cavity is provided with an air inlet and an air outlet; the first channel and the second channels are along the length direction of the head; and both the first channel and the second channels are provided with inlets and outlets; the inlets are communicated with the air outlet of the cavity; the outlets are communicated with atmosphere; and the second channels are internally provided with valves. The first channel and the second channels are utilized to guide the flow direction of the airflow rationally, so that the head of the anti-drag motor train unit, disclosed by the invention, has the advantages of reducing running resistance of the streamline form motor train unit, improving pressure difference between two sides of the trains when the motor train units intersect by controlling the open and close states of the valves in the second channels and improving running stability of the motor train unit.
Description
Technical field
The present invention relates to the track traffic technology, relate in particular to a kind of drag reduction motor train unit headstock.
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 about 70% of operation total drag, when motor train unit speed reaches 300km/h, air resistance accounts for about 85% of operation total drag, and the major part of the energy of motor train unit consumption in service all is used for overcoming air resistance.
During the on the line intersection of EMU of exercising in opposite directions, surrounding air is produced strong disturbance, in the moment that headstock and the tailstock of two cars passes through, the inboard side wall surface pressure of the head of motor train unit and 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 and be called the patent document of " the aerodynamic force drag reduction method of blunt tail vehicle " referring to application number, the method is that a through hole is opened on bottom or the top in blunt tail vehicle body, for the pressure before and after the balanced car body provides a gas channel 30, so that " high pressure " gas of Vehicular body front is by the vehicle bottom zone of this orifice flow to relative " low pressure ".
This patented method has only been considered the aerodynamic force drag reduction of blunt tail vehicle, considers for air foil, and existing motor train unit headstock is jointly surrounded by point, end face and both walls and is streamline contour; Prior art is only considered vehicle front and back pressure drag, and the both sides pressure reduction when not considering to utilize the intersection of aerodynamic refinement vehicle is on the impact of vehicle smoothness.
Summary of the invention
The invention provides a kind of drag reduction motor train unit headstock, be used for overcoming defective of the prior art, the aerodynamic force of motor train unit in the high-speed cruising process of the linear car body of realization convection current carried out drag reduction, not only reduce vehicle front and back pressure reduction, 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 drag reduction motor train unit headstock, this headstock is jointly surrounded by point, end face and both walls and is streamline contour, and described point has a cavity; Has at least one first passage on the described end face, all has at least one second channel on the both walls, 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 all is communicated with this cavity exhaust outlet, and described outlet all is communicated with atmosphere; Be equipped with valve in the described second channel.
The technique effect of one aspect of the present invention is: the flow direction of utilizing first passage and second channel correct guidance air-flow, reduced the running resistance of streamline contour motor train unit train, the pressure reduction of the vehicle both sides when improving the motor train unit intersection by the switching of controlling valve in the second channel improves the motor train unit operation stability.
Description of drawings
Fig. 1 is the structural representation of prior art;
The front view of the drag reduction motor train unit headstock that Fig. 2 embodiment of the invention provides;
Fig. 3 is the birds-eye view of Fig. 2;
Fig. 4 is the local enlarged diagram of Fig. 2;
Fig. 5 is the local enlarged diagram of Fig. 3;
State reference view when Fig. 6 is two car intersections.
The specific embodiment
Shown in Fig. 2-6, the embodiment of the invention provides a kind of drag reduction motor train unit headstock, and this headstock 2 is jointly surrounded by point, end face and both walls and is streamline contour, and point has a cavity 10; Has at least one first passage on the end face, all has at least one second channel on the both walls, cavity 10 has ventilation inlet 9 and exhaust outlet, first passage and second channel are all along the headstock length direction, and first passage and second channel all have import and outlet, import all is communicated with this exhaust outlet, and outlet all is communicated with atmosphere; Be equipped with valve 7 in the 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, and left side second channel 20 and right side second channel 19 are interior all to have be used to the valve 7 of closing its passage.19 outlets 21 of right side second channel and 20 outlets 22 of left side second channel are all near side window 4, and left side second channel 20 and right side second channel 19 all are positioned at pilot 8 tops.
The drag reduction motor train unit headstock that the technical program provides, in the motor train unit operational process, air draught enters cavity 10 through ventilation inlet 9, enter respectively first passage and second channel through the exhaust outlet of cavity 10 and the import of first passage and the import of second channel again, most of air-flow enters atmosphere through the first passage outlet, and the sub-fraction air-flow enters atmosphere through the second channel outlet.
When two motor train unit intersections, aerodynamic force between two cars is larger, the air pressure by the inboard, lateral that the inboard side wall that two headstocks are adjacent bears is larger, the air pressure less that the side wall in the two headstocks outside bears, this can cause headstock inside to be subjected to force unbalance, close the second channel that arranges on the outside side wall of two headstocks by valve 7, referring to Fig. 6, the direction of arrow is the travel direction of motor train unit headstock, namely close the left side second channel 20 of the headstock that travels left and to the left side second channel 20 of the headstock of right travel, compensated the inboard air pressure of motor train unit, so that motor train unit obtain by the outside air pressure in inboard, what motor train unit obtained like this is tended to balance by the outside air pressure in inboard and power by the inboard, lateral, strengthens the stability of motor train unit.
The drag reduction motor train unit headstock of above-described embodiment utilizes the flow direction of correct guidance air-flow, reduced the running resistance of streamline contour motor train unit train, the pressure reduction of the vehicle both sides when improving the motor train unit intersection by the switching of controlling valve in the second channel improves the motor train unit operation stability.
Have the opening 5 that is communicated with driver's cab on the end face, first passage is arranged in the driver's cab and the first passage outlet is communicated with this driver's room conditioning bleeding point.First passage 14 outlets 16 of concrete left side and 13 outlets 15 of right side first passage all are communicated with this driver's room conditioning bleeding point, air passes into driver's room conditioning bleeding point through 14 outlets 16 of left side first passage and 13 outlets 15 of right side first passage, ventilate for driver's cab, arrange such as atmosphere through opening 5 again, reduce the malleation of headstock front end, compensated the negative pressure of driver's room conditioning afterbody.Driver's cab opening 5 is positioned at side door 6 tops in an embodiment.
First passage is sticked on the end face inwall.Second channel is sticked on the 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 the right-side wall inwall, at first be located on the inwall easily fixing, secondly, be sticked with its fixing inwall and be conducive to reduce to take up room, the train nose shape that end face and side wall surround is streamline contour, helps to reduce skin resistance.
Have vehicle window 3 on the end face, first passage is positioned at vehicle window 3 outsides.As shown in Figure 5, left side first passage 14 is positioned at vehicle window 3 left sides, and right side first passage 13 is positioned at vehicle window 3 right sides.
First passage all be horn-like with second channel, and first passage to export relative first passage import larger, 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.
To purify the air that enters in the cavity in order crossing, on the ventilation inlet 9 of cavity filter screen to be set.Because the air-flow in the tailstock type cavity is flowed out by opening of sieve, the eddy current of the motor train unit tailstock has been played certain dissipation effect, reduced the eddy resistance of the tailstock.
The drag reduction motor train unit headstock that the embodiment of the invention provides, need not consume extra power, take simple structural measure can reduce streamline contour motor train unit headstock end face malleation, thereby reduce the headstock pressure drag, be positioned at the motor train unit headstock of the tailstock, because of the tailstock and headstock opposite direction, then at the tailstock, sidewall register becomes ventilation inlet, and the motor train unit tailstock then imports air-flow compensation tailstock negative pressure by tailstock side wall inlet, thereby reduces tailstock pressure drag.And close and open motor train unit left and right sides side wall passage by the simple structure measure, the left and right sides difference of pressure when regulating meeting strengthens train operation stability.Reduce the overall operation resistance of motor train unit, saved the energy.
It should be noted that at last: above each embodiment is not intended to limit only in order to technical scheme of the present invention to be described; Although with reference to aforementioned each embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps some or all of technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of various embodiments of the present invention technical scheme.
Claims (7)
1. drag reduction motor train unit headstock, this headstock is jointly surrounded by point, end face and both walls and is streamline contour, it is characterized in that, and described point has a cavity; Has at least one first passage on the described end face, all has at least one second channel on the both walls, 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 all is communicated with this exhaust outlet, and described outlet all is communicated with atmosphere; Be equipped with valve in the described second channel.
2. drag reduction motor train unit headstock according to claim 1 is characterized in that, has the opening that is communicated with driver's cab on the described end face, and described first passage is arranged in the described driver's cab and the first passage outlet is communicated with this driver's room conditioning bleeding point.
3. drag reduction motor train unit headstock according to claim 1 is characterized in that, described first passage is sticked on the end face inwall.
4. drag reduction motor train unit headstock according to claim 1 is characterized in that, described second channel is sticked on the both walls inwall.
5. drag reduction motor train unit headstock according to claim 1 is characterized in that having vehicle window on the described end face, and described first passage is positioned at described vehicle window outside.
6. arbitrary described drag reduction motor train unit headstock is characterized in that according to claim 1-5, described first passage all be horn-like with second channel, and first passage outlet is larger than first passage import, the second channel outlet is larger than second channel import.
7. arbitrary described drag reduction motor train unit headstock is characterized in that according to claim 1-5, and 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 |
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| CN102897177A true CN102897177A (en) | 2013-01-30 |
| CN102897177B CN102897177B (en) | 2016-02-17 |
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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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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| JP2019127243A (en) * | 2018-01-26 | 2019-08-01 | 株式会社日立製作所 | Railway vehicle |
| WO2021017758A1 (en) * | 2019-07-30 | 2021-02-04 | 东莞开道科技有限公司 | Rail car |
Citations (7)
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| 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 |
| JPH11301472A (en) * | 1998-04-17 | 1999-11-02 | Kawasaki Heavy Ind Ltd | Car body structure for railway head vehicle |
| CN1636813A (en) * | 2003-12-25 | 2005-07-13 | 株式会社日立制作所 | 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 |
| 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 |
-
2012
- 2012-10-22 CN CN201210405665.1A patent/CN102897177B/en active Active
Patent Citations (7)
| 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 |
| JPH11301472A (en) * | 1998-04-17 | 1999-11-02 | Kawasaki Heavy Ind Ltd | Car body structure for railway head vehicle |
| CN1636813A (en) * | 2003-12-25 | 2005-07-13 | 株式会社日立制作所 | 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 |
| 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 |
Cited By (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 |
| JP2019127243A (en) * | 2018-01-26 | 2019-08-01 | 株式会社日立製作所 | Railway 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 |
| WO2021017758A1 (en) * | 2019-07-30 | 2021-02-04 | 东莞开道科技有限公司 | Rail car |
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| CN102897177B (en) | 2016-02-17 |
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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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