CN103183038A - External surface provided with round pit surface textures of high-speed train carriage - Google Patents
External surface provided with round pit surface textures of high-speed train carriage Download PDFInfo
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- CN103183038A CN103183038A CN2013100853090A CN201310085309A CN103183038A CN 103183038 A CN103183038 A CN 103183038A CN 2013100853090 A CN2013100853090 A CN 2013100853090A CN 201310085309 A CN201310085309 A CN 201310085309A CN 103183038 A CN103183038 A CN 103183038A
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- texture
- speed train
- noise
- compartment
- high speed
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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 discloses an external surface provided with round pit surface textures of a high-speed train carriage. The round or triangular micro-pit textures are uniformly arranged on the external surface of the high-speed train carriage, and the triangular micro-pit textures are arranged uniformly and co-directionally; and during high-speed operation of the high-speed train, the surface of a train body can generate air friction noise. Compared with a smooth high-speed carriage surface, the noise intensity on a round pit texture interface of the high-speed train carriage is reduced remarkably, and the aerodynamic noise of the surface of the train body can be reduced by more than ten decibels; and compared with the smooth high-speed carriage surface, the noise intensity on a triangular texture interface of the high-speed train carriage is reduced remarkably, and the aerodynamic noise of the surface of the train body can be reduced by about twenty decibels maximally.
Description
The application is applying date 2011.03.23, application number: " 201110070577.6 ", denomination of invention is divided an application for the patent application of " with the high speed train compartment outside face of the surperficial texture in little hole ".
Technical field
The present invention relates to a kind of high speed train compartment outer surface structure, especially relate to a kind of high speed train compartment outside face with round pool surface texture.
Background technology
Along with progress of science and technology and development and national economy, the construction of China Express Railway has become new growth engines, and still along with the continuous lifting of high speed railway speed, the noise emission problem becomes increasingly conspicuous.When noise transfer in the passenger train car, passenger's comfort level is by bus greatly reduced, and be delivered to outside the passenger train, can make railway along both side need to the zone of the restricted requirement of noise as: hospital, school, residential development etc. are deeply hurt.The noise source of high speed train mainly contains: wheel-rail noise, slip ring system noise, aerodynamic noise, building excitation noise and other mechanical noises.The OA overall noise level that produces during high speed rail train operation mainly contains above several noise and is formed by stacking, and under different train running speeds and different vibration and noise reducing measure condition, above-mentioned several influence degree is different.General train speed is when 240km/h is following, and wheel-rail noise is bigger to the influence of environment along the line; Train speed is when 240 km/h are above, and aerodynamic noise and slip ring system noise increase, and become the overriding noise source jointly with wheel-rail noise.The windage noise source is main relevant with body construction itself.When the vehicle high-speed cruising, uneven (formation such as side window, side door, louver, car body connecting portion) of the difference of the special construction of pantograph, headstock shape, car body surface etc. all produce the windage noise.
Based on above-mentioned background, when the high speed train high-speed cruising, if can appropriate design high speed train compartment outer surface structure, must reduce the aerodynamic noise of car body surface.
Summary of the invention
The object of the present invention is to provide a kind of high speed train compartment outside face with round pool surface texture, little hole of design can effectively reduce the aerodynamic noise of car body surface, the sound nuisance that brings when reducing the high speed train high-speed cruising.
The technical solution used in the present invention is:
The present invention is provided with evenly distributed little hole texture at high speed train compartment outside face.
Described little hole texture is in the circle that is shaped as of compartment outside face, circular little pit area and surperficial texture cell area ratio
SBe 0.5024, the round pool aspect ratio is 0.3, the surface, compartment
zThe texture length of direction
BWith the surface, compartment
zThe car length of direction
WThan being 0.6, also claim the texture ratio, round pool texture is evenly distributed.
Described little hole texture is at the triangle that is shaped as of compartment outside face, and the texture density of the little hole of triangle texture is the surface, compartment
zTriangle bottom side length on the direction
aWith with corresponding height ratio be 1.1, the surface, compartment
zTriangle bottom side length on the direction
aWith the pyrometric cone hole degree of depth
dThan being 3, the surface, compartment
zThe texture length of direction
BWith the surface, compartment
zThe car length of direction
WThan being 0.6, also claim the texture ratio, twist of track is evenly arranged in the same way.
The beneficial effect that the present invention has is:
1, compare with surface, smooth high speed train compartment, the noise density on the round pool texture interface, high speed train compartment obviously reduces, and can reduce more than ten decibel of car body surface aerodynamic noise.
2, compare with surface, smooth high speed train compartment, the noise density on the triangle texture interface, high speed train compartment obviously reduces, the highest can the reduction about 20 fens shellfishes of car body surface aerodynamic noise.
Description of drawings
Fig. 1 is circular little hole, surface, compartment texture scheme drawing.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the little hole of triangle, surface, compartment texture scheme drawing.
Fig. 4 is the B-B cutaway view of Fig. 3.
Among the figure:
xAxle-high speed train compartment service direction;
zAxle-high speed train compartment short transverse;
WThe car length of surface ,-high speed train compartment z direction;
BThe texture length of surface ,-high speed train compartment z direction;
bThe length of side of surface ,-high speed train compartment texture cell;
rThe circular radius of-round pool texture;
hThe degree of depth of-round pool texture;
aThe length on-leg-of-mutton base;
The length of vertical line on the-leg-of-mutton base;
dThe bottom surface degree of depth of-pyrometric cone.
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
The outside face in high speed train compartment is provided with little hole texture, and described little hole texture has two kinds of forms: circular little hole texture and the little hole of triangle texture.
As shown in Figure 1, be that the surface shown in the scheme drawing is an infinitesimal face on surface, compartment at circular little hole texture scheme drawing of high speed train compartment outside face processing, infinitesimal face size for long * widely equal 0.5
Mm* 0.5
Mm, Fig. 2 is the cutaway view of round pool.According to following three variablees of each parameter-definition among the figure:
Round pool texture area ratio
Each parameter value among Fig. 1 and Fig. 2:
Thereby the value that obtains three variablees is respectively S equals 0.5024,
Equal 0.3,
Equal 0.6, round pool is evenly arranged in surface, high speed train compartment.
As shown in Figure 3, be that the surface shown in the scheme drawing is an infinitesimal face on surface, compartment at the little hole of the triangle texture scheme drawing of high speed train compartment outside face processing, infinitesimal face size for long * widely equal 0.5
Mm* 0.5
Mm, Fig. 4 is the cutaway view of triangle texture.Formed by three faces by illustrating as can be known the pyrometric cone hole, wherein the triangle base
aThe place the bottom surface with
zDirection is parallel, and the plane at two other place, limit of triangle is the inclined-plane, and three faces constitute the pyrometric cone hole.According to following four variablees of each parameter-definition among the figure:
Each parameter value among Fig. 3 and Fig. 4:
Thereby the value that obtains four variablees is respectively
Equal
,
Equal 1.1,
Equal 3,
Equal 0.6, twist of track texture is evenly arranged in surface, high speed train compartment.
Three variable areas of circular little hole, surface, above-mentioned high speed train compartment texture are than S, aspect ratio
, the texture ratio
, their value differences, the effect difference of the aerodynamic noise of reduction car body surface, the complex optimum area is than S, aspect ratio
, the texture ratio
, can obtain optimum noise reduction, optimal solution is that area is 0.5024 than S, little hole aspect ratio
Be 0.3, the texture ratio
Be 0.6, compare with surface, smooth high-speed train railway carriage or compartment, can reduce more than ten decibel of aerodynamic noise.Four variable triangle texture density of the little hole of triangle, above-mentioned high speed train compartment texture
, the high ratio in the end
, the end deeply than
, the texture ratio
, their value differences, the effect difference of the aerodynamic noise of reduction car body surface, complex optimum texture density
, the high ratio in the end
, the end deeply than
, the texture ratio
, can obtain optimum noise reduction, optimal solution is texture density
For
, the high ratio in the end
Be 1.1, the end deeply than
Be 3, the texture ratio
Be 0.6, compare with surface, smooth high-speed train railway carriage or compartment, the highest can the reduction about 20 fens shellfishes of aerodynamic noise.
What need at last to replenish is, for above-mentioned micron-sized little hole, and can be by special job operation preparations such as laser beam machinings.
The above-mentioned specific embodiment is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change to the present invention makes all fall into protection scope of the present invention.
Claims (1)
1. the high speed train compartment outside face with round pool surface texture is provided with evenly distributed little hole texture at high speed train compartment outside face; It is characterized in that: described little hole texture is in the circle that is shaped as of compartment outside face, circular little pit area and surperficial texture cell area ratio
SBe 0.5024, the round pool aspect ratio is 0.3, the surface, compartment
zThe texture length of direction
BWith the surface, compartment
zThe car length of direction
WThan being 0.6, also claim the texture ratio, round pool texture is evenly distributed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN2013100853090A CN103183038A (en) | 2011-03-23 | 2011-03-23 | External surface provided with round pit surface textures of high-speed train carriage |
Applications Claiming Priority (1)
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CN2013100853090A CN103183038A (en) | 2011-03-23 | 2011-03-23 | External surface provided with round pit surface textures of high-speed train carriage |
Related Parent Applications (1)
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CN2011100705776A Division CN102152795B (en) | 2011-03-23 | 2011-03-23 | Outside surface of carriage of high-speed train with micro-pit surface textures |
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CN103183038A true CN103183038A (en) | 2013-07-03 |
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CN2013100853090A Pending CN103183038A (en) | 2011-03-23 | 2011-03-23 | External surface provided with round pit surface textures of high-speed train carriage |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105501237A (en) * | 2015-12-01 | 2016-04-20 | 唐山轨道客车有限责任公司 | High speed train drag reduction device |
Citations (5)
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JPH0456673A (en) * | 1990-06-27 | 1992-02-24 | Koichi Nagahisa | Air resistance reducing device |
JP2005324762A (en) * | 2004-05-12 | 2005-11-24 | Mitsuhiro Kawatsu | REDUCTION METHOD OF cd VALUE |
CN101108603A (en) * | 2006-07-18 | 2008-01-23 | 日产自动车株式会社 | Under cover |
CN101565048A (en) * | 2008-04-26 | 2009-10-28 | 刘景斌 | Bionic train |
US20100219296A1 (en) * | 2008-11-01 | 2010-09-02 | Alexander J. Shelman-Cohen | Reduced drag system for windmills, fans, propellers, airfoils, and hydrofoils |
-
2011
- 2011-03-23 CN CN2013100853090A patent/CN103183038A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0456673A (en) * | 1990-06-27 | 1992-02-24 | Koichi Nagahisa | Air resistance reducing device |
JP2005324762A (en) * | 2004-05-12 | 2005-11-24 | Mitsuhiro Kawatsu | REDUCTION METHOD OF cd VALUE |
CN101108603A (en) * | 2006-07-18 | 2008-01-23 | 日产自动车株式会社 | Under cover |
CN101565048A (en) * | 2008-04-26 | 2009-10-28 | 刘景斌 | Bionic train |
US20100219296A1 (en) * | 2008-11-01 | 2010-09-02 | Alexander J. Shelman-Cohen | Reduced drag system for windmills, fans, propellers, airfoils, and hydrofoils |
Non-Patent Citations (1)
Title |
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杨弘炜等: "一种新型边界层控制技术应用于湍流减阻的实验研究", 《航空学报》 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105501237A (en) * | 2015-12-01 | 2016-04-20 | 唐山轨道客车有限责任公司 | High speed train drag reduction device |
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Application publication date: 20130703 |