CN211308562U - High-speed train damping device based on low-density gas injection - Google Patents
High-speed train damping device based on low-density gas injection Download PDFInfo
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- CN211308562U CN211308562U CN201922162421.5U CN201922162421U CN211308562U CN 211308562 U CN211308562 U CN 211308562U CN 201922162421 U CN201922162421 U CN 201922162421U CN 211308562 U CN211308562 U CN 211308562U
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Abstract
A high-speed train drag reduction device based on low-density gas injection comprises: the gas storage tank, the jet pump, the gas transmission pipe and the gas injection pipe; the air storage tank, the jet pump, the air delivery pipe and the jet pipe are arranged in the train head carriage; the air outlet of the air storage tank is communicated with the first air inlet of the injection pump through an air conveying pipe; the air outlet of the jet pump is communicated with the air injection pipe; the air nozzle of the air nozzle is arranged on the surface of the streamline part of the train head; the gas storage tank is a gas storage tank with density lower than that of air. The technical scheme that this application provided can reduce the aerodynamic resistance that receives among the high-speed train operation process, especially frictional resistance, improves the energy economy of train, has reduced the degree of difficulty of high-speed train speed raising.
Description
Technical Field
The utility model relates to a high-speed train fairing, concretely relates to high-speed train fairing based on low-density gas injection belongs to high-speed train aerodynamics technical field.
Background
The aerodynamic resistance of the object moving at high speed accounts for most of the total resistance. The aerodynamic resistance can be divided into differential pressure resistance and frictional resistance. The pressure difference resistance is resistance generated by pressure difference between the front and the back of an object, and the friction resistance is generated on the surface due to the fact that the surface of the object and the air close to the surface of the object have a velocity gradient caused by the viscosity of the air. For example, the aerodynamic resistance of a high-speed train running at 350km/h accounts for about 85 percent of the total resistance, and the friction resistance accounts for 30 to 40 percent of the aerodynamic resistance of the whole train. Therefore, the method has the advantages of reducing the relative speed difference between the high-speed moving object and the surrounding fluid, reducing the surface speed gradient, improving and solving the problems of large surface friction resistance and large energy loss of the high-speed moving object, and is very significant.
The effective technology for reducing the frictional resistance needs to be realized simply, the operation is simple and convenient, and the effect is obvious. The current technology can be mainly classified into the following categories: 1. non-smooth vehicle body aerodynamic drag reduction, such as adding ribs, protrusions on the surface, grooving the surface, etc. By changing the surface structure, the boundary layer structure is improved, and the resistance condition is improved. The structure is simple, the practicability is strong, the robustness is good, the application is wide, but the resistance reduction effect is not obvious; 2. and reducing drag by using a plasma flow technology. The method inhibits boundary layer separation of a high-speed moving object by blocking the release point through a surface medium, thereby achieving drag reduction. However, the method is complex in actual operation and may have the problem of increasing extra energy consumption, and is not easy to implement. 3. An active control surface is employed. Such methods can theoretically be adapted to the actual situation. But the actual operation is complex, the working condition is complex and the realization is not easy. 4. Changing the operating environment. Such as a low vacuum line. Such methods can theoretically reduce the density of air in the pipeline, allowing the object to operate at low density to achieve flow drag reduction. But it has heat dissipation problems, noise problems, environmental problems, etc., and is not easy to implement.
Therefore, how to provide a high-speed train damping device based on low-density gas injection can reduce the frictional resistance received in the running process of a high-speed train, improve the energy economy of the train and reduce the difficulty of accelerating the high-speed train is a problem to be urgently broken through and solved by technical staff in the field.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a be not enough to above-mentioned prior art, the utility model aims to form the boundary layer through injection pipe spun low density gas along the flow of train surface, can reduce the frictional resistance that receives among the high-speed train operation process, improve the energy economy of train, reduced the degree of difficulty of high-speed train acceleration. The utility model provides a high-speed train fairing based on low density gas injection, the device includes: the gas storage tank, the jet pump, the gas transmission pipe and the gas injection pipe; the air storage tank, the jet pump, the air delivery pipe and the jet pipe are arranged in the train head carriage; the air outlet of the air storage tank is communicated with the first air inlet of the injection pump through an air conveying pipe; the air outlet of the jet pump is communicated with the air injection pipe; the air nozzle of the air nozzle is arranged on the surface of the streamline part of the train head; the gas storage tank is a gas storage tank with density lower than that of air.
According to the utility model discloses an embodiment provides a high-speed train fairing based on low density gas injection:
a high-speed train drag reduction device based on low-density gas injection comprises: the gas storage tank, the jet pump, the gas transmission pipe and the gas injection pipe; the gas storage tank, the jet pump, the gas transmission pipe and the gas injection pipe are arranged in a carriage (head) of the train head; the air outlet of the air storage tank is communicated with the first air inlet of the injection pump through an air conveying pipe; the air outlet of the jet pump is communicated with the air injection pipe; the air nozzle of the air nozzle is arranged on the surface of the streamline part of the train head (for example, the windward side of the train head); the gas storage tank is a gas storage tank with density lower than that of air.
Preferably, the gas storage tank is internally provided with a helium gas storage tank or a neon gas storage tank.
Preferably, the apparatus further comprises: a heating device; the heating device is arranged on the gas transmission pipe and/or the gas injection pipe.
Preferably, the apparatus further comprises: an air injection seat; the gas injection seat is arranged at a gas injection port of the gas injection pipe; the gas injection seat comprises: a seat body and an air dispersing cavity; the windward side of the seat body is streamline; the air-out nozzle of the air-out cavity faces to the direction of the air flow of the windward side of the train.
Preferably, the number A of the air outlet spray pipes of the air dispersing cavity is 2-1000; preferably, A is 4 to 800; more preferably, A is 10 to 500.
Preferably, the air outlet spray pipes are arranged along the intersection line of the windward side of the train and the horizontal plane.
Preferably, the gas injection seat further comprises: a pressurizing and accelerating port; the pressurizing speed-increasing port is arranged at the nozzle of the air outlet spray pipe and is specifically a conical nozzle.
Preferably, the gas injection seat further comprises: an airflow stop valve; the airflow stop valve is arranged on the air outlet spray pipe.
Preferably, the gas injection seat further comprises: a flow baffle plate; the flow baffle is formed by extending the windward side of the air spray seat along the air flow direction, and the flow baffle is arranged between the atmospheric air flow and the air flow of the air outlet spray pipe nozzle.
Preferably, the apparatus further comprises: a bleed pipe; the air inlet at one end of the air guide pipe is arranged on the windward side of the train and is positioned at the joint of the front part of the air injection seat and the windward side of the train; and the other end of the air guide pipe is connected to a second air inlet of the injection pump.
Preferably, the apparatus further comprises: an air regulating valve; the air regulating valve is arranged on the air entraining pipe.
In the application, the gas storage tank, the jet pump, the gas transmission pipe and the gas injection pipe of the drag reduction device of the high-speed train are all arranged in the train head; the gas storage box stores gas with density lower than that of air; the gas storage tank is communicated with the jet pump through a gas transmission pipeline, the jet pump pressurizes the gas into high-pressure gas, and the high-pressure gas is jetted to the surface of the train head through the jet pipe. The high-pressure gas sprayed by the spraying pipe flows along the surface of the train to form a boundary layer, and the air flow of head-on impact in the process of the train running is isolated from the surface of the train, so that the air flow is not in direct contact with the surface of the train, and the lower the environmental density is, the lower the frictional resistance is, and the frictional resistance is reduced due to the correlation between the frictional resistance and the surface roughness of an object and the environmental density. In the application, gas with density lower than that of air is adopted for injection, and compared with the injection of ordinary air, the gas injection device can enable a train to run in a low-density fluid environment. Thereby reducing the frictional resistance experienced by the train. The resistance of the train path is reduced, the speed of the train which can be reached by the train is increased under the condition of the same power, and the energy consumption of the train is small in the process of advancing at a constant speed. The application provides a technical scheme can reduce the frictional resistance that receives among the high-speed train operation process, improves the energy economy nature of train, has reduced the degree of difficulty of high-speed train speed raising.
In the present application, the gas having a lower density than air is preferably helium, neon, nitrogen, or the like. The gas chosen to be less dense than air is a readily collectable gas.
In this application, the heating device of setting on gas-supply pipe and/or jet-propelled pipe can further reduce gas density. Thereby further reducing the frictional resistance of the train.
In this application, the gas nozzle seat that sets up on the train surface can make the high-pressure high-speed gas of jet-propelled pipe spun, the direct air current direction that points to the train windward side. Therefore, an isolated air film can be better formed on the surface of the train, and the friction resistance is reduced.
In this application, the air-out spray tube quantity in scattered air cavity sets up according to actual need, and a plurality of air-out pipeline cooperations can make the device form stable air film on train locomotive surface, improve isolated efficiency, better reduction frictional resistance.
In the present application, the speed of the gas ejected from the nozzle can be further increased by pressurizing the acceleration port. Further reducing drag.
In this application, the setting is the airflow stop valve on the air-out spray tube, can control the gas flow direction of the intracavity that looses. If certain air-out spray tube blocks up, accessible control air current stop valve for gaseous whole air-out spray tube of this department of walking is dredged with the air-out spray tube.
In this application, through keeping off the flow board, the high-speed gas that the air-out spray tube just spun and the air current of train windward side are isolated to the entity. The flow direction of the air flow sprayed out of the air outlet spray pipe can be stabilized, and the air flow is not easily scattered by the air on the windward side.
In the application, partial air is mixed into the jet pump through the bleed air pipe, so that the density of the gas sprayed out by the high-pressure jet pump can be adjusted in real time. And the amount of introduced air is controlled by an air adjusting valve.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the technical scheme provided by the utility model can reduce the friction resistance in the running process of the high-speed train and improve the energy economy of the train;
2. the technical scheme provided by the utility model reduces the difficulty of accelerating the high-speed train, and is beneficial to improving the speed of the train;
3. the utility model provides a technical scheme can be through introducing outside air, the density of pressurized gas in the regulation jet pump.
Drawings
Fig. 1 is a schematic view of the overall structure of a high-speed train drag reduction device based on low-density gas injection according to an embodiment of the present invention;
FIG. 2 is a schematic view of the arrangement of the gas nozzles of the gas lances in the embodiment of the present invention;
fig. 3 is a schematic view illustrating the flow direction of the air flow in the embodiment of the present invention;
FIG. 4 is a schematic view of the overall structure of a drag reduction device for a high-speed train according to an embodiment of the present invention;
fig. 5 is a schematic structural view of an air injection seat according to an embodiment of the present invention.
Reference numerals:
1: a gas storage tank; 2: an injection pump; 3: a gas delivery pipe; 4: a gas ejector tube; 5: a heating device; 6: an air injection seat; 601: a base body; 602: a gas dispersion cavity; 60201: an air outlet spray pipe; 603: a pressurizing and accelerating port; 604: an airflow stop valve; 605: a flow baffle plate; 7: a bleed pipe; 8: an air regulating valve.
Detailed Description
According to the utility model discloses a first embodiment provides a high-speed train fairing based on low density gas injection:
a high-speed train drag reduction device based on low-density gas injection comprises: the device comprises an air storage tank 1, an injection pump 2, a gas transmission pipe 3 and a gas injection pipe 4; the gas storage tank 1, the jet pump 2, the gas transmission pipe 3 and the gas injection pipe 4 are arranged in a train head carriage; the air outlet of the air storage tank 1 is communicated with the first air inlet of the injection pump 2 through an air delivery pipe 3; the air outlet of the jet pump 2 is communicated with the air injection pipe 4; the air nozzle of the air nozzle 4 is arranged on the surface of the streamline part of the train head (for example, the windward side of the train head); the gas storage tank 1 is a gas storage tank with density lower than that of air.
Preferably, the gas storage tank 1 is a helium gas storage tank or a neon gas storage tank.
Preferably, the apparatus further comprises: a heating device 5; the heating device 5 is arranged on the gas transmission pipe 3 and/or the gas injection pipe 4.
Preferably, the apparatus further comprises: an air injection seat 6; the gas injection seat 6 is arranged at the gas injection port of the gas injection pipe 4; the gas ejection seat 6 includes: a base body 601 and an air dispersing cavity 602; the windward side of the seat body 601 is streamline; the air dispersing cavity 602 is arranged in the seat body 601, an air inlet of the air dispersing cavity 602 is communicated with an air outlet of the air ejector 4, and the air outlet spray pipe 60201 of the air dispersing cavity 602 faces to the air flow direction of the windward side of the train.
Preferably, the number A of the air outlet spray pipes 60201 of the air dispersion cavity 602 is 2-1000; preferably, A is 4 to 800; more preferably, A is 10 to 500.
Preferably, the plurality of outlet nozzles 60201 are arranged along the intersection of the windward side of the train and the horizontal plane.
Preferably, the gas injection seat 6 further comprises: a pressurization acceleration port 603; the pressurizing speed-increasing port 603 is arranged at the nozzle of the air outlet nozzle 60201, and the pressurizing speed-increasing port 603 is specifically a conical nozzle.
Preferably, the gas injection seat 6 further comprises: an airflow shutoff valve 604; the air flow stop valve 604 is arranged on the air outlet spray pipe 60201.
Preferably, the gas injection seat 6 further comprises: a flow baffle 605; the flow baffle plate 605 is formed by extending the windward surface of the air injection seat 6 along the air flow direction, and the flow baffle plate 605 is arranged between the atmospheric air flow and the air flow at the nozzle of the air outlet spray pipe 60201.
Preferably, the apparatus further comprises: a bleed air pipe 7; a gas inlet at one end of the gas guide pipe 7 is arranged on the windward side of the train and is positioned at the connection part of the front part of the gas injection seat 6 and the windward side of the train; the other end of the bleed air pipe 7 is connected to a second air inlet of the injection pump 2.
Preferably, the apparatus further comprises: an air regulating valve 8; the air regulating valve 8 is arranged on the bleed air pipe 7.
Example 1
A high-speed train drag reduction device based on low-density gas injection comprises: the device comprises an air storage tank 1, an injection pump 2, a gas transmission pipe 3 and a gas injection pipe 4; the gas storage tank 1, the jet pump 2, the gas transmission pipe 3 and the gas injection pipe 4 are arranged in a train head carriage; the air outlet of the air storage tank 1 is communicated with the first air inlet of the injection pump 2 through an air delivery pipe 3; the air outlet of the jet pump 2 is communicated with the air injection pipe 4; the air nozzle of the air nozzle 4 is arranged on the surface of the streamline part of the train head; the gas storage tank 1 is a gas storage tank with density lower than that of air.
Example 2
Example 1 was repeated except that the gas tank 1 was a helium gas tank.
Example 3
Example 2 was repeated except that the apparatus further included: a heating device 5; the heating device 5 is arranged on the gas transmission pipe 3 and/or the gas injection pipe 4.
Example 4
Example 3 is repeated except that the apparatus further comprises: an air injection seat 6; the gas injection seat 6 is arranged at the gas injection port of the gas injection pipe 4; the gas ejection seat 6 includes: a base body 601 and an air dispersing cavity 602; the windward side of the seat body 601 is streamline; the air dispersing cavity 602 is arranged in the seat body 601, an air inlet of the air dispersing cavity 602 is communicated with an air outlet of the air ejector 4, and the air outlet spray pipe 60201 of the air dispersing cavity 602 faces to the air flow direction of the windward side of the train.
Example 5
Example 4 was repeated except that the number a of the outlet nozzles 60201 of the air-release chamber 602 was 100. The air outlet spray pipes 60201 are arranged along the intersection line of the windward side of the train and the horizontal plane.
Example 6
Example 5 was repeated except that the gas injection seat 6 further included: a pressurization acceleration port 603; the pressurizing speed-increasing port 603 is arranged at the nozzle of the air outlet nozzle 60201, and the pressurizing speed-increasing port 603 is specifically a conical nozzle. The gas injection seat 6 further comprises: an airflow shutoff valve 604; the air flow stop valve 604 is arranged on the air outlet spray pipe 60201.
Example 7
Example 6 was repeated except that the gas injection seat 6 further included: a flow baffle 605; the flow baffle plate 605 is formed by extending the windward surface of the air injection seat 6 along the air flow direction, and the flow baffle plate 605 is arranged between the atmospheric air flow and the air flow at the nozzle of the air outlet spray pipe 60201.
Example 8
Example 7 was repeated except that the apparatus further included: a bleed air pipe 7; a gas inlet at one end of the gas guide pipe 7 is arranged on the windward side of the train and is positioned at the connection part of the front part of the gas injection seat 6 and the windward side of the train; the other end of the bleed air pipe 7 is connected to a second air inlet of the injection pump 2. The device also includes: an air regulating valve 8; the air regulating valve 8 is arranged on the bleed air pipe 7.
Example 9
Example 8 was repeated except that the gas tank 1 was a neon gas tank. The quantity A of the air outlet spray pipes 60201 of the air dispersion cavity 602 is 200.
Claims (12)
1. A high-speed train fairing based on low-density gas injection is characterized by comprising the following components: the device comprises an air storage tank (1), an injection pump (2), an air delivery pipe (3) and an air injection pipe (4); the gas storage tank (1), the jet pump (2), the gas pipe (3) and the gas jet pipe (4) are arranged in a train head carriage; an air outlet of the air storage tank (1) is communicated with a first air inlet of the injection pump (2) through an air conveying pipe (3); the air outlet of the jet pump (2) is communicated with the gas injection pipe (4); the air nozzle of the air nozzle (4) is arranged on the surface of the streamline part of the head train of the train; the gas storage tank (1) is a gas storage tank with density lower than that of air.
2. High speed train drag reduction unit based on low density gas injection according to claim 1, characterized in that the gas storage tank (1) is a helium or neon gas storage tank.
3. A high speed train drag reduction device based on low density gas injection as defined in claim 2 further comprising: a heating device (5); the heating device (5) is arranged on the gas transmission pipe (3) and/or the gas injection pipe (4).
4. A high speed train drag reduction device based on low density gas injection as defined in claim 3 wherein the device further comprises: an air injection seat (6); the gas injection seat (6) is arranged at a gas injection port of the gas injection pipe (4); the gas injection seat (6) comprises: a base body (601) and an air dispersing cavity (602); the windward side of the seat body (601) is streamline; the air dissipation chamber (602) is arranged in the base body (601), an air inlet of the air dissipation chamber (602) is communicated with an air outlet of the air ejector pipe (4), and an air outlet spray pipe (60201) of the air dissipation chamber (602) faces to the direction of air flow of the windward side of the train.
5. The high-speed train drag reduction device based on low-density gas injection according to claim 4, characterized in that the number A of the air outlet nozzles (60201) of the air-release chamber (602) is 2-1000.
6. A high speed train drag reducing device based on low density gas injection as defined in claim 5 wherein A is 4-800 and a plurality of said outlet nozzles (60201) are arranged along the intersection of the windward side of the train and the horizontal plane.
7. A high speed train drag reduction device based on low density gas injection as claimed in claim 6 wherein a is 10 to 500.
8. A high speed train drag reduction device based on low density gas injection according to claim 5, characterized in that the gas injection seat (6) further comprises: a pressurizing acceleration port (603); the pressurizing speed-increasing port (603) is arranged at the nozzle of the air outlet nozzle (60201), and the pressurizing speed-increasing port (603) is a conical nozzle.
9. A low density gas injection based high speed train drag reducing device according to claim 8, wherein the gas injection seat (6) further comprises: an air flow shutoff valve (604); the air flow stop valve (604) is arranged on the air outlet spray pipe (60201).
10. The low density gas injection based high speed train drag reducing device of any of claims 4-9, wherein the gas jet block (6) further comprises: a baffle plate (605); the flow baffle plate (605) is formed by extending the windward surface of the air injection seat (6) along the air flow direction, and the flow baffle plate (605) is arranged between the atmospheric air flow and the air flow of the nozzle of the air outlet spray pipe (60201).
11. A high speed train drag reduction device based on low density gas injection as defined in claim 10 further comprising: a bleed air pipe (7); a gas inlet at one end of the air guide pipe (7) is arranged on the windward side of the train and is positioned at the connection part of the front part of the air injection seat (6) and the windward side of the train; the other end of the air-entraining pipe (7) is connected into a second air inlet of the injection pump (2).
12. A high speed train drag reduction device based on low density gas injection as defined in claim 11 further comprising: an air regulating valve (8); the air regulating valve (8) is arranged on the air guide pipe (7).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922162421.5U CN211308562U (en) | 2019-12-05 | 2019-12-05 | High-speed train damping device based on low-density gas injection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922162421.5U CN211308562U (en) | 2019-12-05 | 2019-12-05 | High-speed train damping device based on low-density gas injection |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114454905A (en) * | 2021-12-23 | 2022-05-10 | 周忠宝 | Train for controlling tail vortex drag reduction by air blowing and drag reduction method of train |
-
2019
- 2019-12-05 CN CN201922162421.5U patent/CN211308562U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114454905A (en) * | 2021-12-23 | 2022-05-10 | 周忠宝 | Train for controlling tail vortex drag reduction by air blowing and drag reduction method of train |
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