CN204323343U - A kind of device utilizing air foam to reduce Aerodynamic Drag of High Speed Train - Google Patents
A kind of device utilizing air foam to reduce Aerodynamic Drag of High Speed Train Download PDFInfo
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- CN204323343U CN204323343U CN201420856127.9U CN201420856127U CN204323343U CN 204323343 U CN204323343 U CN 204323343U CN 201420856127 U CN201420856127 U CN 201420856127U CN 204323343 U CN204323343 U CN 204323343U
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Abstract
The utility model discloses a kind of device utilizing air foam to reduce Aerodynamic Drag of High Speed Train, the foam producer comprising setting hydraulic accumulator ON TRAINS, be connected to the water pump of hydraulic accumulator, be connected to water pump output port, the output port of foam producer is connected with air foam injection pipe, air foam injection pipe is laid on Train surface, and air foam injection pipe is provided with several injection hole.Water pump will pump injection foam producer to foam liquid by hydraulic accumulator, foam liquid becomes foam after foam producer process, and the surface of train is injected in by air foam injection pipe, become air foam, air just reduces with contacting of train by such air filled cavity foam layer, thus reaches the object reducing Aerodynamic Drag of Train.Scenario-frame described in the utility model is simple, is easy to practical application, easy to operate, reliable, and cost is reasonable.Improve train running speed by the air resistance effectively reduced in high speed train traveling, and reduce energy consumption.
Description
Technical field
The utility model belongs to high speed train and reduces air drag device, is specifically related to a kind of device utilizing air foam to reduce Aerodynamic Drag of High Speed Train.
Background technology
In recent years, China is setting about research and is setting up high speed train operational system.Due to square being directly proportional of air resistance suffered during train operation and speed, air resistance dissipated power is directly proportional to speed cube, so along with raising, air resistance and the hurried increase of dissipated power thereof of the speed of a motor vehicle.Result of study shows, when high speed train running velocity reaches 300km/h, the ratio that its air resistance accounts for total drag reaches 80%, so reduce air resistance and improve train running speed and reduce energy consumption closely related, thus reduces the key issue that air resistance becomes train speed raising.The approach of traditional reduction air resistance comprises: reduce train cross-sectional area or reduce aerodynamic drag factor, known by studying, the computing formula of Aerodynamic Drag of High Speed Train is
known from formula, air resistance suffered by high speed train and ρ, V, S, C
xrelevant, wherein density of air ρ is constant under normal circumstances, and train speed V is the amount that people wish to improve constantly, and therefore, reduce air resistance, and traditional method reduces train cross-sectional area S and aerodynamic drag factor C
x.But the reduction of train cross-sectional area is limited, reduces aerodynamic drag factor and also do not reach optimum ideal effect.
But the reduction of train cross-sectional area is limited, reduces aerodynamic drag factor and also do not reach optimum ideal effect.Want the moving velocity improving train further, need to find a kind of new way that can reduce air resistance.
Summary of the invention:
It is simple, easy to operate, reliable that the purpose of this utility model is to provide a kind of principle, and the air foam that utilizes that can effectively reduce the air resistance in train driving reduces the device of Aerodynamic Drag of High Speed Train, to overcome the deficiencies in the prior art.
For achieving the above object, the technical solution of the utility model is:
A kind of device utilizing air foam to reduce Aerodynamic Drag of High Speed Train, the foam producer comprising setting hydraulic accumulator ON TRAINS, be connected to the water pump of hydraulic accumulator, be connected to water pump output port, the output port of foam producer is connected with air foam injection pipe, air foam injection pipe is laid on Train surface, and air foam injection pipe is provided with several injection hole; Train is also provided with microcomputer, and is connected to the train speed sensor of microcomputer first input end mouth; First output port of microcomputer is connected to water pump.
Preferably, train speed sensor is piezoelectric type train speed sensor.
Preferably, be provided with flow sensor at the mouth of foam producer, flow sensor connects microcomputer second input port.
Preferably, flow sensor is duct type vortex flow sensors.
Preferably, microcomputer also comprises the second output port, and the second output port connects combined aural and visual alarm.
Preferably, air foam injection pipe uniform spreading is located at the surface of train.
Preferably, Train surface is also provided with film, and air foam injection pipe is arranged between film and Train surface, and film is connected by solid film line with Train surface, arranges Gu film line and injection hole misplace.
Preferably, Gu film line is metal filament, Gu film line mosaic is at the inside face of film near train, Gu film line is fixedly connected on Train surface.
Preferably, microcomputer is 51 series monolithics or arm processor or PLC or industrial computer.
The beneficial effects of the utility model are: water pump will pump injection foam producer to foam liquid by hydraulic accumulator, foam liquid becomes foam after foam producer process, and the surface of train is injected in by air foam injection pipe, become air foam, air just reduces with contacting of train by such air filled cavity foam layer, thus reaches the object reducing Aerodynamic Drag of Train.By connecting and the speed sensor of microcomputer and flow sensor, reach the real-time detection to train speed, and according to the real-time speed of train, pump rotary speed is controlled, reach the control to final foam jet amount and flow velocity.And the flow sensor being arranged on foam producer output port is monitored the foam flow that reality exports, and data are returned microcomputer, can realize further controlling more accurately water pump.Be arranged on outermost film and be fixed on Train surface by solid film line, and misplace with the injection hole on air foam injection pipe and arrange, in the more stable air filled cavity foam layer of Train surface formation, the object of more effective reduction Aerodynamic Drag of Train can be reached.Scenario-frame described in the utility model is simple, is easy to practical application, easy to operate, reliable, and cost is reasonable.Improve train running speed by the air resistance effectively reduced in high speed train traveling, and reduce energy consumption.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment,
Fig. 2 is the structural representation that this practical information embodiment air foam injection pipe is laid on Train surface;
Fig. 3 is the schematic diagram of this practical information embodiment.
In figure: 1-hydraulic accumulator, 2-water pump, 3-foam producer, 4-microcomputer, 5-air foam injection pipe, 6-injection hole, 7-train speed sensor, 8-film, 9-flow sensor, 10-train.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described further.
A kind of device (Fig. 1) utilizing air foam to reduce Aerodynamic Drag of High Speed Train, comprise the hydraulic accumulator 1 be arranged on train 10, water pump 2, foam producer 3, microcomputer 4 and air foam injection pipe 5, be arranged on train 10 by respective corresponding support component inner or surperficial.
Hydraulic accumulator 1, water pump 2 are connected by pipeline successively with foam producer 3, and the output port of foam producer 3 is connected with air foam injection pipe 5, and air foam injection pipe 5 is arranged on train 10 surface.In the present embodiment, air foam injection pipe 5 uniform spreading is located at the surface of train 10, and is provided with several injection hole 6 (Fig. 2).
Microcomputer 4 first input end mouth connects train speed sensor 7, first output port and is connected to water pump 2.Also be provided with flow sensor 9 at the mouth of foam producer 3, flow sensor 9 connects microcomputer 4 second input port.Microcomputer 4 also comprises the second output port, and the second output port connects combined aural and visual alarm.
In the present embodiment, train speed sensor 7 is piezoelectric type train speed sensor 7.Flow sensor 9 is duct type vortex flow sensors 9, and it can be used for the discharge measurement of the media such as liquid, steam and pressurized air.Microcomputer 4 is 51 series monolithics or arm processor or PLC or industrial computer.Foam producer 3 is made up of filter screen, foam jet pipe, adaptor cover, the first-class device of switching; Combined aural and visual alarm comprises LED and buzzer phone.
A kind of improvement project as the present embodiment arranges film 8 at air foam injection pipe 5 skin, and film 8 is connected by solid film line with train 10 surface.Gu film line is metal filament, Gu film line mosaic is at the inside face of film 8 near train 10, Gu film line is fixedly connected with and train 10 surface, arrange Gu film line and injection hole 6 misplace.Gu film line is fixedly connected with and refers to train 10 surface and longitudinally fuse solid film line on train 10 surface round and round.
When the thickness of film 8 reaches nano-scale, quantum size effect can be there is.This is because the motion of electronics is limited in film 8, causes the band structure generation splitting perpendicular to surface direction to produce quantum well states.Film 8 surface is made to have adsorption property, when train 10 is static, film 8 can be adsorbed on the metal surface of train 10, as a whole with 10 one-tenth, train, only air foam from the injection hole 6 of air foam injection pipe 5 out time, just between train 10 surface and film 8, form small space.When train 10 brings into operation, along with the increase of speed, the air pressure on train 10 surface can decline, and barometric pressure is also inside train 10 to the application force of film 8, and the air foam ejected only can enter in the slight void of film 8 layers.
Foam from foam producer 3 out after, be transported to and be distributed in the air foam injection pipe 5 on train surface, pipeline is dispersed with many injection holes 6, air foam just ejects from these injection holes 6, this layer film 8 is set on the surface of train, the air foam ejected is made to be evenly distributed in the surface of train 10, form one deck air filled cavity foam layer, this reduces the density of air on train 10 surface, thus the air resistance just reduced suffered by train 10, improve train 10 speed, save the energy.
In the driving process of high speed train 10, air resistance is the chief component of high speed train 10 resistance, and the root that air resistance produces is the viscosity of air.If there is no viscosity, it is ideal fluid completely around the train 10 flowed in air, the air resistance drawn from ideal fluid theory should be zero, and in fact air resistance is very large, this device produces one deck air foam by controlling foam producer 3 on train 10 surface, reduce train 10 and the friction of air, reduce air resistance.
The implementation method that device described in the present embodiment utilizes air foam to reduce high speed train 10 air resistance is: water pump 2 will be pumped to foam liquid and inject foam producer 3, foam liquid becomes foam after foam producer 3 processes, and the surface of train 10 is injected in by air foam injection pipe 5, become air foam after running into air, air just reduces with contacting of train 10 by such air filled cavity foam layer.
When train 10 starts to travel, train speed sensor 7 detects real-time speed, stores the foam flow corresponding to each speed in microcomputer 4, and the pump speeds being controlled water pump 2 by microcomputer 4 reaches the object controlling foam flow.
Detected the foam actual flow of the mouth of foam producer 3 by flow sensor 9 simultaneously, with microcomputer 4 for compared with the flow speed that reaches, and transmit signals to microcomputer 4 start control, when flow is obviously not enough, explanation foam liquid is not enough, signal is passed to microcomputer 4, and Realtime Alerts, be presented in man-machine interface.
Speed sensor detects the speed that train 10 travels in real time, and each speed has a corresponding with it foam flow, by comparing with the real-time foam flow fed back, then signal is sent to microcomputer 4.Microcomputer 4 is connected with man-machine interface, realizes the mutual transmission of information; Microcomputer 4 controls the rotating speed of water pump 2, train 10 moving velocity is faster, water pump 2 rotating speed is larger, the flow of foam liquid is also larger, foam producer 3 becomes foam liquid into foam jet on train 10 surface, and the flow sensor 9 be arranged on pipeline detects the flow of foam in real time, the signal feedback of foam flowrate variation is gone back, form the information feed-back system of a closed loop; Microcomputer 4 is connected with combined aural and visual alarm, when foam flow and given flow long-time unequal time, or when foam liquid is not enough, microcomputer 4 connects combined aural and visual alarm, Realtime Alerts.(Fig. 3)
Microcomputer 4 receives the input and output instruction of man-machine interface, man-machine interface both can receive the information that microcomputer 4 passes over, as shown the speed of train 10, the flow of foam, also can parameters, specify the corresponding foam flow produced of each speed, and signal is sent to microcomputer 4, realize controlling the entirety of device.
Time high speed train 10 travels in orbit, the speed sensor be arranged on train 10 detects real-time speed, obtain the foam flow A value corresponding with train 10 speed, and the real-time foam flow that flow sensor 9 measures is B value, to A, signal is sent to microcomputer 4 after B value compares, microcomputer 4 pairs of signals process, its output signal controls the rotating speed of water pump 2, foam liquid in pond is injected foam producer 3, foam liquid becomes foam after foam producer 3 processes, and by the surface of duct injection at train 10, air foam is become after running into air, the friction of air and train 10 just reduces by such air filled cavity foam layer.
While foam is sprayed onto high speed train 10 surface, is arranged on the foam flow that pipeline is flow through in the real-time measurement of flow sensor 9 on pipeline, and feeds back in time, determined the increase and decrease of foam flow by the size comparing A and B value.
If A>B, illustrate that the given flow corresponding with train 10 speed is larger than real-time traffic, microcomputer 4 needs the rotating speed increasing water pump 2, foam flow is increased to corresponding with train 10 speed.If A<B, illustrate that the given flow corresponding with train 10 speed is less than real-time traffic, microcomputer 4 needs the rotating speed reducing water pump 2, foam flow is reduced to corresponding with train 10 speed.If A=B, illustrate that the given flow corresponding with train 10 speed is equal with real-time traffic, without the need to regulating the rotating speed of water pump 2.Material is thus formed a close loop negative feedback control system, the stability of system can be ensured.
In a word, the structure of the present embodiment achieves and reaches by changing train 10 superficial air density the object reducing air resistance, one deck air foam is produced on train 10 surface, reduce the density of air on train 10 its surface when running at high speed, thus reduce train 10 and the friction of air, reduce air resistance.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to the utility model claims.The part be not described in detail in this specification sheets belongs to the known prior art of professional and technical personnel in the field.
Claims (9)
1. the device utilizing air foam to reduce Aerodynamic Drag of High Speed Train, it is characterized in that: comprise the hydraulic accumulator (1) be arranged on train (10), be connected to the water pump (2) of described hydraulic accumulator (1), be connected to the foam producer (3) of described water pump (2) output port, the output port of described foam producer (3) is connected with air foam injection pipe (5), described air foam injection pipe (5) is laid on described train (10) surface, described air foam injection pipe (5) is provided with several injection hole (6), described train (10) is also provided with microcomputer (4), and being connected to the train speed sensor (7) of described microcomputer (4) first input end mouth, the first output port of described microcomputer (4) is connected to water pump (2).
2. a kind of device utilizing air foam to reduce Aerodynamic Drag of High Speed Train according to claim 1, is characterized in that: described train speed sensor (7) is piezoelectric type train speed sensor (7).
3. a kind of device utilizing air foam to reduce Aerodynamic Drag of High Speed Train according to claim 1, it is characterized in that: be provided with flow sensor (9) at the mouth of foam producer (3), described flow sensor (9) connects described microcomputer (4) second input port.
4. a kind of device utilizing air foam to reduce Aerodynamic Drag of High Speed Train according to claim 3, is characterized in that: described flow sensor (9) is duct type vortex flow sensors (9).
5. a kind of device utilizing air foam to reduce Aerodynamic Drag of High Speed Train according to claim 1, it is characterized in that: described microcomputer (4) also comprises the second output port, described second output port connects combined aural and visual alarm.
6. a kind of device utilizing air foam to reduce Aerodynamic Drag of High Speed Train according to claim 1, is characterized in that: described air foam injection pipe (5) uniform spreading is located at the surface of described train (10).
7. a kind of device utilizing air foam to reduce Aerodynamic Drag of High Speed Train according to claim 1, it is characterized in that: described train (10) surface is also provided with film (8), described air foam injection pipe (5) is arranged between described film (8) and described train (10) surface, described film (8) is connected by solid film line with described train (10) surface, and described solid film line and described injection hole (6) misplace and arrange.
8. a kind of device utilizing air foam to reduce Aerodynamic Drag of High Speed Train according to claim 7, it is characterized in that: described solid film line is metal filament, described solid film line mosaic is at the inside face of described film (8) near described train (10), and described solid film line is fixedly connected on described train (10) surface.
9. a kind of air foam that utilizes according to claim 1 reduces the device of Aerodynamic Drag of High Speed Train, it is characterized in that: described microcomputer (4) is 51 series monolithics or arm processor or PLC or industrial computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420856127.9U CN204323343U (en) | 2014-12-29 | 2014-12-29 | A kind of device utilizing air foam to reduce Aerodynamic Drag of High Speed Train |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420856127.9U CN204323343U (en) | 2014-12-29 | 2014-12-29 | A kind of device utilizing air foam to reduce Aerodynamic Drag of High Speed Train |
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| CN204323343U true CN204323343U (en) | 2015-05-13 |
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| CN201420856127.9U Expired - Fee Related CN204323343U (en) | 2014-12-29 | 2014-12-29 | A kind of device utilizing air foam to reduce Aerodynamic Drag of High Speed Train |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108725463A (en) * | 2017-04-13 | 2018-11-02 | 周照耀 | It is a kind of to reduce method and structure of the air to high-speed moving object resistance |
| CN110386156A (en) * | 2018-04-18 | 2019-10-29 | 宁波大艾激光科技有限公司 | Air layers reducing resistance system, method and bullet train |
| CN112429024A (en) * | 2020-12-15 | 2021-03-02 | 北京艾丁勒格科技发展有限公司 | Method and device for reducing surface air resistance of high-speed train |
-
2014
- 2014-12-29 CN CN201420856127.9U patent/CN204323343U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108725463A (en) * | 2017-04-13 | 2018-11-02 | 周照耀 | It is a kind of to reduce method and structure of the air to high-speed moving object resistance |
| CN110386156A (en) * | 2018-04-18 | 2019-10-29 | 宁波大艾激光科技有限公司 | Air layers reducing resistance system, method and bullet train |
| CN110386156B (en) * | 2018-04-18 | 2024-04-23 | 宁波大艾激光科技有限公司 | Air film drag reduction system, method and high-speed train |
| CN112429024A (en) * | 2020-12-15 | 2021-03-02 | 北京艾丁勒格科技发展有限公司 | Method and device for reducing surface air resistance of high-speed train |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20151229 |
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| EXPY | Termination of patent right or utility model |