CN211969421U - Train pneumatic heat absorbing device - Google Patents
Train pneumatic heat absorbing device Download PDFInfo
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- CN211969421U CN211969421U CN202020275322.8U CN202020275322U CN211969421U CN 211969421 U CN211969421 U CN 211969421U CN 202020275322 U CN202020275322 U CN 202020275322U CN 211969421 U CN211969421 U CN 211969421U
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Abstract
The utility model relates to a magnetic levitation train technical field particularly, relates to a train pneumatic heat absorbing device. The train comprises a train shell, wherein a thermoelectric conversion device is arranged on the inner wall of the train shell and comprises a thermoelectric module and an electric energy storage mechanism, and two electrodes of the thermoelectric module are respectively connected with two ends of the electric energy storage mechanism; the hot end of the thermoelectric conversion device is in contact with the train shell, and the cold end of the thermoelectric conversion device is arranged in the air inside the train shell. The utility model discloses a thermoelectric conversion device can be directly turn into the pneumatic heat of train shell the electric energy storage, and the electric energy of storing when needing can provide the electric energy for on-vehicle electrical equipment. The method can control the surface temperature of the train, can absorb and utilize the pneumatic heat, changes waste into valuable, and is suitable for the concepts of greenness, environmental protection, energy conservation and safety of a vacuum pipeline transportation system.
Description
Technical Field
The utility model relates to a magnetic levitation train technical field particularly, relates to a train pneumatic heat absorbing device.
Background
The vacuum pipeline transportation system generally means that the internal air pressure is lower than 0.1 atmosphere, and the interior of the system has thin gas and is not completely vacuum. When a magnetic suspension train runs at high speed in a vacuum pipeline, the gap between the train and the inner wall of the pipeline is small, gas rapidly flows through the surface of a train body to pass through the annular gap due to the movement of the train, and the viscous action of the gas generates friction with the surface of the train body, so that the pneumatic heat is generated, and the surface temperature of the train is increased. Research shows that the temperature of the head and the tail of the magnetic suspension train running at a high speed is high, the highest surface temperature can reach more than 100 ℃, the shell material is generally made of glass fiber reinforced plastics and is in a high-temperature state for a long time, the thermal fatigue strength of the structure of the shell material is adversely affected, and the heat dissipation of the train in a vacuum pipeline is a problem to be solved urgently.
The scheme for solving the heat exchange problem of the vacuum pipeline magnetic suspension train mainly aims at the heat dissipation problem of on-board air conditioning motor equipment, mainly dissipates heat of internal parts of the vehicle by designing a ventilation path of the internal heating parts of the vehicle, and does not solve the problem of pneumatic heat.
The existing high-speed train runs in an open atmospheric environment, the speed is low, the convection heat exchange of the train in the open environment is good, the problem of aerodynamic heat does not exist, and the problem is not deeply researched.
The thermoelectric effect at the present stage is mainly applied to small power supplies for aerospace or military or waste heat and waste heat power generation, and can be used for manufacturing small refrigerators in the aspect of refrigeration. This technique has not been used to address vacuum line aerodynamic heating.
The existing vacuum pipeline maglev train heat dissipation system mainly focuses on heat dissipation of vehicle-mounted electric appliances, and residual gas in a vacuum pipeline is utilized to dissipate heat of equipment through a designed air duct. The method cannot solve the problem of overhigh surface temperature of the train, and the method directly exchanges heat generated by the train to gas in the vacuum pipeline, so that the deterioration of the running environment in the pipeline is further aggravated.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a train pneumatic heat absorbing device to improve above-mentioned problem. In order to achieve the above purpose, the utility model adopts the following technical scheme:
the application provides a train aerodynamic heat absorption device, which comprises a train shell, wherein a thermoelectric conversion device is arranged on the inner wall of the train shell and comprises a thermoelectric module and an electric energy storage mechanism, and two electrodes of the thermoelectric module are respectively connected with two ends of the electric energy storage mechanism; the hot end of the thermoelectric conversion device is in contact with the train shell, and the cold end of the thermoelectric conversion device is arranged in the air inside the train shell.
Optionally, the thermoelectric module is a flexible thermoelectric module and the thermoelectric module is disposed along an interior contour of the train enclosure.
Optionally, the thermoelectric modules are disposed inside the top of the train shell and inside the two side walls.
Optionally, the electrical energy storage mechanism comprises a supercapacitor; and two electrodes of the thermoelectric module are respectively connected with two electrode plates of the super capacitor.
Optionally, the number of the super capacitors is multiple, and the plurality of super capacitors are arranged in series.
Optionally, the thermoelectric conversion device is disposed in an inner wall of a train shell at a train head and an inner wall of a train shell at a train tail.
Optionally, a transfer switch is disposed between the thermoelectric module and the electric energy storage mechanism, the transfer switch includes a moving contact, a first stationary contact and a second stationary contact, the moving contact is connected to the electric energy storage mechanism, the first stationary contact is connected to an electrode of the thermoelectric module, and the second stationary contact is connected to an electric load.
The utility model has the advantages that:
the utility model discloses a thermoelectric conversion device can be directly turn into the pneumatic heat of train shell the electric energy storage, and the electric energy of storing when needing can provide the electric energy for on-vehicle electrical equipment. The method can control the surface temperature of the train, can absorb and utilize the pneumatic heat, changes waste into valuable, and is suitable for the concepts of greenness, environmental protection, energy conservation and safety of a vacuum pipeline transportation system.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the embodiments of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view of a train aerodynamic heat absorption device according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a train pneumatic heat absorbing device according to an embodiment of the present invention.
The labels in the figure are: 1. a vacuum line; 2. a train housing; 3. a thermoelectric conversion device; 4. an electrical energy storage mechanism; 5. a track.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 and fig. 2, the present embodiment provides a train aerodynamic heat absorption device, which includes a train casing 2, a thermoelectric conversion device 3 is disposed on an inner wall of the train casing 2, the thermoelectric conversion device 3 includes a thermoelectric module and an electric energy storage mechanism 4, two electrodes of the thermoelectric module are respectively connected to two pole plates of the electric energy storage mechanism 4; the hot end of the thermoelectric conversion device 3 is in contact with the train shell 2, and the cold end of the thermoelectric conversion device is arranged in the air inside the train shell 2.
In this embodiment, the thermoelectric conversion device 3 is directly attached to the inner surface of the train casing 2. The heat of the vehicle shell is directly converted into electric energy, and the electric energy can be stored and utilized by converting the electric energy storage mechanism 4 to supply power for lighting equipment on the vehicle and the like. The system has simple structure, is green and reliable, has small volume and weight, and is suitable for the application occasions with precious space, such as magnetic suspension trains.
Optionally, the thermoelectric modules are flexible and are arranged along the inner contour of the train shell 2.
Alternatively, the thermoelectric modules are disposed inside the top of the train shell 2 and inside both sidewalls.
Optionally, the electric energy storage mechanism 4 includes a super capacitor C, and two electrodes of the thermoelectric module are respectively connected to two plates of the super capacitor C.
Optionally, the number of the super capacitors C is multiple, and the super capacitors C are arranged in series.
Alternatively, the thermoelectric conversion device 3 is provided in the inner wall of the train shell 2 at the train front and the inner wall of the train shell 2 at the train rear.
Optionally, a transfer switch is disposed between the thermoelectric module and the electric energy storage mechanism 4, the transfer switch includes a moving contact, a first fixed contact and a second fixed contact, the moving contact is connected to the electric energy storage mechanism 4, the first fixed contact is connected to an electrode of the thermoelectric module, and the second fixed contact is connected to the electric load R. The changeover switches include a first changeover switch SA1 and a second changeover switch SA2, and the first changeover switch SA1 and the second changeover switch SA2 are provided at both ends of the electric energy storage mechanism 4, respectively. And the first changeover switch SA1 and the second changeover switch SA2 are simultaneously changed over. That is, when the movable contact in the first transfer switch SA1 is connected to the first fixed contact, the movable contact in the second transfer switch SA2 is also connected to the first fixed contact, and vice versa. When the power supply of the electric load R is needed, the electric energy storage mechanism 4 is connected with the electric load R through the change-over switch, the purpose of power supply can be achieved, and meanwhile, the connection between the electric energy storage mechanism 4 and the thermoelectric module is cut off.
As shown in fig. 1, a train runs in a track 5 arranged on the ground of a vacuum pipeline 1, although air in the vacuum pipeline 1 is thin, the surface of the train can be lifted due to friction heat between the air and the surface of the train because the running speed of the train is high and the clearance between the train and the inner wall of the pipeline is small; the hot end of the thermoelectric module is attached to the inner side of the shell of the maglev train, and the cold end of the thermoelectric module is arranged in the air in the carriage. When the maglev train runs at a high speed, air and the surface of the maglev train generate heat through friction, the heat flows into the hot end of the power generation module through the shell, and the thermoelectric module conducts heat energy in a high-temperature direction-finding and low-temperature direction-finding mode and generates heat flow; when the heat energy flows in from the high-temperature side and flows out from the low-temperature side, a part of the heat energy is not released, is converted into electric energy in the device, and outputs direct-current voltage and current; a plurality of thermoelectric modules are connected in series to obtain a larger voltage. And connecting a circuit to a super capacitor bank formed by connecting a plurality of super capacitors in series to charge the super capacitors and store electric energy. The waste can be changed into valuable, and harmful heat is directly converted into electric energy to be supplied to lighting equipment on the vehicle.
As a novel energy storage element, the super capacitor has the characteristics of large capacity, high power density, short charging and discharging time, long cycle life and wide working temperature range. In the embodiment, the electric energy and the heat energy need to be converted frequently, so that the super capacitor is selected as the energy storage element.
A train aerodynamic heat absorption method implementing the above embodiment includes step S11 and step S12.
S11, arranging a thermoelectric conversion device 3 on the inner wall of the train shell 2; the thermoelectric conversion device 3 comprises a thermoelectric module and an electric energy storage mechanism 4, and two electrodes of the thermoelectric module are respectively connected with two ends of the electric energy storage mechanism 4;
and S12, in the running process of the train, the train rubs with air to enable the train shell 2 to generate heat, the thermoelectric conversion device converts the heat into electric energy, and the electric energy is stored in the electric energy storage mechanism 4.
The method further comprises step S13.
And S13, connecting the electric energy storage mechanism 4 with an electric load, and supplying power to an electric appliance in the electric load through the capacitor (4).
The method described in this embodiment may be implemented with the train aerodynamic heat absorption apparatus described above.
The embodiment of the utility model provides a train pneumatic heat absorption method, its technical effect that realizes the principle and produce is the same with aforementioned train pneumatic heat absorption device embodiment, for brief description, and the part is not mentioned to train pneumatic heat absorption method embodiment part, can refer to corresponding content in the aforementioned train pneumatic heat absorption device embodiment.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A train pneumatic heat absorbing device is characterized in that: the train comprises a train shell (2), wherein a thermoelectric conversion device (3) is arranged on the inner wall of the train shell (2), the thermoelectric conversion device (3) comprises a thermoelectric module and an electric energy storage mechanism (4), and two electrodes of the thermoelectric module are respectively connected with two polar plates of the electric energy storage mechanism (4); the hot end of the thermoelectric conversion device (3) is in contact with the train shell (2), and the cold end of the thermoelectric conversion device is arranged in the air inside the train shell (2).
2. The train aerodynamic heat absorption device according to claim 1, wherein: the thermoelectric module is a flexible thermoelectric module and is arranged along the inner contour of the train shell (2).
3. The train aerodynamic heat absorption device according to claim 2, wherein: the thermoelectric modules are arranged on the inner side of the top of the train shell (2) and the inner sides of the two side walls.
4. The train aerodynamic heat absorption device according to claim 1, wherein: the electric energy storage mechanism (4) comprises a super capacitor (C), and two electrodes of the thermoelectric module are respectively connected with two electrode plates of the super capacitor (C).
5. The train aerodynamic heat absorption device according to claim 4, wherein: the number of the super capacitors (C) is multiple, and the super capacitors (C) are arranged in series.
6. The train aerodynamic heat absorption device according to claim 1, wherein: the thermoelectric conversion device (3) is arranged in the inner wall of the train shell (2) at the train head and the inner wall of the train shell (2) at the train tail.
7. The train aerodynamic heat absorption device according to claim 1, wherein: a change-over switch is arranged between the thermoelectric module and the electric energy storage mechanism (4), the change-over switch comprises a moving contact, a first fixed contact and a second fixed contact, the moving contact is connected with the electric energy storage mechanism (4), the first fixed contact is connected with an electrode of the thermoelectric module, and the second fixed contact is connected with an electric load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020275322.8U CN211969421U (en) | 2020-03-09 | 2020-03-09 | Train pneumatic heat absorbing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020275322.8U CN211969421U (en) | 2020-03-09 | 2020-03-09 | Train pneumatic heat absorbing device |
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| CN211969421U true CN211969421U (en) | 2020-11-20 |
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| CN202020275322.8U Active CN211969421U (en) | 2020-03-09 | 2020-03-09 | Train pneumatic heat absorbing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111231998A (en) * | 2020-03-09 | 2020-06-05 | 西南交通大学 | Train pneumatic heat absorption device and method |
| CN112629305A (en) * | 2020-12-18 | 2021-04-09 | 山东大学 | Heat dissipation device, system and method for underground closed pipeline |
| CN112960006A (en) * | 2021-01-26 | 2021-06-15 | 中车青岛四方机车车辆股份有限公司 | Cooling and oxygen supply system based on phase change heat absorption and vacuum pipeline magnetic suspension train |
-
2020
- 2020-03-09 CN CN202020275322.8U patent/CN211969421U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111231998A (en) * | 2020-03-09 | 2020-06-05 | 西南交通大学 | Train pneumatic heat absorption device and method |
| CN111231998B (en) * | 2020-03-09 | 2024-05-31 | 西南交通大学 | Train aerodynamic heat absorption device and method |
| CN112629305A (en) * | 2020-12-18 | 2021-04-09 | 山东大学 | Heat dissipation device, system and method for underground closed pipeline |
| CN112629305B (en) * | 2020-12-18 | 2021-10-22 | 山东大学 | Heat dissipation device, system and method for underground closed pipeline |
| CN112960006A (en) * | 2021-01-26 | 2021-06-15 | 中车青岛四方机车车辆股份有限公司 | Cooling and oxygen supply system based on phase change heat absorption and vacuum pipeline magnetic suspension train |
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