A vibration reduction system for vacuum tube ultra-high-speed maglev vehicles

Abstract

The present invention discloses a vibration reduction system for a vacuum pipeline ultra-high-speed maglev vehicle, comprising: an air spring, a height control valve, an air compressor and a high-pressure gas storage device; the air compressor, the high-pressure gas storage device, the height control valve and the air spring are connected in sequence, and the height control valve is also connected to the air compressor; the height control valve is used to control the inflation or exhaust of the air spring; the compressed air generated by the air compressor passes through the high-pressure gas storage device and the high-pressure control valve in sequence and then enters the air spring to achieve inflation of the air spring; the gas discharged from the air spring passes through the height control valve and then enters the air compressor to achieve reciprocating circulation of the gas. The vibration reduction system for a vacuum pipeline ultra-high-speed maglev vehicle of the present invention has the advantages of simple and compact structure, convenient installation, good vibration reduction effect, ability to ensure that the gas pressure in the vibration reduction system remains balanced, and ability to achieve reciprocating circulation of the gas.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of rail vehicle vibration reduction, and in particular to a vibration reduction system for a vacuum tube ultra-high-speed maglev vehicle. Background Art

[0002] At present, rail transit vehicles are developing towards higher speeds, while the test speed of existing rail transit vehicles has not exceeded 600 kilometers per hour. This is mainly due to the influence of air resistance. The air resistance that vehicles need to overcome when running at higher speeds is also greater. In order to achieve higher speed operation, high-speed research on rail transit vehicles is working towards vacuum tube high-speed maglev. Around the world, vacuum tube high-speed maglevs with speeds of 1,000 kilometers per hour, 2,000 kilometers per hour, and even 4,000 kilometers per hour are all under planning and research. A prerequisite for achieving these ultra-high-speed maglevs is that the vehicles need to operate in a completely closed vacuum environment. For vehicles running at high speeds, a small fluctuation may cause large vibrations. In existing high-speed EMUs, in order to improve the vibration reduction effect of the vehicle, low-stiffness air springs are used as vibration reduction components. The use of this vibration reduction component requires compressed air and will randomly discharge air to the outside world. Obviously, this use method will limit the use of air springs in vacuum tube ultra-high-speed maglev vehicles. The vertical stiffness that other existing rubber vibration reduction components can provide is at least 10 times greater than that of the air spring vibration reduction system, and the vibration reduction effect is not good. In view of this, the research and development of the vibration reduction system for vacuum tube ultra-high-speed maglev vehicles has important guiding and reference significance for the development of vacuum tube ultra-high-speed maglev vehicles.

[0003] Existing maglev vehicles all adopt an open design when the speed is less than 600 kilometers per hour. The air spring system can discharge gas into the atmosphere, and the compressed air can also be generated from the atmosphere. When the speed of the maglev vehicle is higher than 600 kilometers per hour, it is necessary to consider running in a vacuum pipeline. The compressed air source required by the air spring system and the discharged gas must be specially processed. In view of this, it is urgent to design an air circulation method in the air spring vibration reduction system to reduce the impact of the air used in the vibration reduction system on the vacuum pipeline. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a vacuum pipe ultra-high-speed maglev vehicle vibration reduction system which has a simple and compact structure, is easy to install, has a good vibration reduction effect, can ensure that the gas pressure in the vibration reduction system remains balanced, and can realize gas reciprocating circulation.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A vibration reduction system for a vacuum pipeline ultra-high-speed maglev vehicle comprises: an air spring, a height control valve, an air compressor and a high-pressure gas storage device; the air compressor, the high-pressure gas storage device, the height control valve and the air spring are connected in sequence, and the height control valve is also connected to the air compressor; the height control valve is used to control the inflation or exhaust of the air spring; the compressed air generated by the air compressor passes through the high-pressure gas storage device and the high-pressure control valve in sequence and then enters the air spring to inflate the air spring; the gas discharged from the air spring passes through the height control valve and then enters the air compressor to realize the reciprocating circulation of the gas.

[0007] As a further improvement of the present invention, a low-pressure cylinder is provided between the height control valve and the air compressor, and the low-pressure cylinder is used to store the gas discharged from the air spring.

[0008] As a further improvement of the present invention, a pressure control valve 1 is provided between the low-pressure cylinder and the air compressor, and the pressure control valve 1 is used to control the operation of the air compressor.

[0009] As a further improvement of the present invention, a filtering device is provided in the low-pressure cylinder.

[0010] As a further improvement of the present invention, the air compressor is connected to the high-pressure gas storage device through a gas pipeline four, the high-pressure gas storage device is connected to the height control valve through a gas pipeline three, the height control valve is connected to the air spring through a gas pipeline one, and the height control valve is connected to the air compressor through a gas pipeline two.

[0011] As a further improvement of the present invention, the low-pressure cylinder and the pressure control valve 1 are both arranged on the gas pipeline 2.

[0012] As a further improvement of the present invention, it also includes a height control rod, one end of which is connected to the air spring; the other end of the height control rod is connected to the height control valve; the height control valve and the height control rod jointly control the inflation or exhaust of the air spring.

[0013] As a further improvement of the present invention, it also includes a spare high-pressure gas storage device, and the spare high-pressure gas storage device is connected to the high-pressure gas storage device.

[0014] As a further improvement of the present invention, a second pressure control valve is provided between the standby high-pressure gas storage device and the high-pressure gas storage device, and the second pressure control valve is used to control the standby high-pressure gas storage device to inflate the high-pressure gas storage device.

[0015] As a further improvement of the present invention, after the air spring is inflated, the amount of remaining compressed gas in the high-pressure gas storage device is not less than 10% of the total amount of compressed gas.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] 1. The vibration reduction system for the vacuum pipe super-high-speed maglev vehicle of the present invention has the advantages of simple and compact structure and convenient installation by connecting the air compressor, the high-pressure gas storage device, the height control valve and the air spring in sequence, and connecting the height control valve to the air compressor. The compressed air generated by the air compressor passes through the high-pressure gas storage device and the high-pressure control valve in sequence and then enters the air spring to realize the inflation of the air spring; the gas discharged from the air spring enters the air compressor after passing through the height control valve, and the reciprocating circulation of the gas is realized, avoiding the adverse effect on the vacuum pipe caused by the external discharge of the gas used for vibration reduction, making it possible for the air spring to be used as a vibration reduction component of the super-high-speed maglev vehicle in the vacuum pipe. By utilizing the advantages of the significant vibration reduction effect of the air spring, the vibration reduction effect of the super-high-speed maglev vehicle is improved, thereby improving the operating stability and safety of the super-high-speed maglev vehicle, and it is also conducive to promoting the design and research work of a higher-speed and more stable maglev vehicle.

[0018] 2. The vibration reduction system for the vacuum pipeline ultra-high-speed maglev vehicle of the present invention stores the gas discharged from the air spring by setting a low-pressure cylinder, and sets a pressure control valve between the air compressor and the low-pressure cylinder. The pressure control valve controls the operating timing of the air compressor according to the gas pressure value in the low-pressure cylinder, thereby ensuring that the gas pressure of the entire vibration reduction system remains balanced, realizing the recycling of gas in the vibration reduction system, solving the adverse effects on driving safety caused by the discharge of gas during the circulation of pressurized gas, and improving the stability and safety of vehicle operation.

[0019] 3. The vibration reduction system for vacuum tube ultra-high-speed maglev vehicles of the present invention has the advantages of convenient disassembly and assembly and easy gas replenishment operation and processing by setting a spare high-pressure gas storage device and controlling and adjusting the timing and amount of gas filling in the spare high-pressure gas storage device through a pressure control valve. When the vehicle arrives at the station, the entire vibration reduction system can be gas-replenished and maintained by replenishing gas in the spare high-pressure gas storage device, which is convenient and efficient, and improves the reliability and maintenance convenience of the vibration reduction system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structural principle of the vibration reduction system for the vacuum tube ultra-high-speed maglev vehicle of the present invention.

[0021] Legend:

[0022] 1. Air spring; 2. Intake pipe one; 3. Height control valve; 4. Exhaust pipe; 5. Low-pressure cylinder; 6. Pressure control valve one; 7. Air compressor; 8. Height control rod; 9. Intake pipe two; 10. High-pressure gas storage device; 11. Pressure control valve two; 12. Spare high-pressure gas storage device; 13. Gas pipeline four. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0024] Example

[0025] like Figure 1 As shown, a vibration reduction system for a vacuum pipeline ultra-high-speed maglev vehicle of the present invention comprises: an air spring 1, a height control valve 3, an air compressor 7 and a high-pressure gas storage device 10; the air compressor 7, the high-pressure gas storage device 10, the height control valve 3 and the air spring 1 are connected in sequence, and the height control valve 3 is also connected to the air compressor 7; the height control valve 3 is used to control the inflation or exhaust of the air spring 1; the compressed air generated by the air compressor 7 passes through the high-pressure gas storage device 10 and the high-pressure control valve 3 in sequence and then enters the air spring 1 to realize the inflation of the air spring 1; the gas discharged from the air spring 1 passes through the height control valve 3 and then enters the air compressor 7 to realize the reciprocating circulation of the gas.

[0026] In this embodiment, by connecting the air compressor 7, the high-pressure gas storage device 10, the height control valve 3 and the air spring 1 in sequence, and connecting the height control valve 3 to the air compressor 7, it has the advantages of simple and compact structure and convenient installation. Specifically, during the use of the vibration reduction system of this embodiment, the compressed gas generated by the air compressor 7 will first enter the high-pressure gas storage device 10 for storage, and then under the control of the high-pressure control valve 3, the compressed gas will enter the air spring 1 to achieve the inflation of the air spring 1; when the excess gas in the air spring 1 needs to be discharged, under the control of the high-pressure control valve 3, the discharged gas will enter the air compressor 7, and after being compressed by the air compressor 7, the compressed gas will enter the high-pressure gas storage device 10 for storage, and then enter the air spring 1 for inflation, and so on, to achieve the reciprocating circulation of gas in the vibration reduction system. The vibration reduction system of this embodiment can avoid the adverse effects on the vacuum pipeline caused by the discharge of gas used for vibration reduction, making it possible for the air spring 1 to be used as a vibration reduction component of the ultra-high-speed maglev vehicle in the vacuum pipeline. By utilizing the significant vibration reduction effect of the air spring 1, the vibration reduction effect of the ultra-high-speed maglev vehicle is improved, thereby improving the operating stability and safety of the ultra-high-speed maglev vehicle, and is also conducive to promoting the design and research work of a higher-speed and more stable maglev vehicle.

[0027] In this embodiment, a low-pressure cylinder 5 is provided between the height control valve 3 and the air compressor 7, and the low-pressure cylinder 5 is used to store the gas discharged from the air spring 1. Furthermore, a pressure control valve 6 is provided between the low-pressure cylinder 5 and the air compressor 7, and the pressure control valve 6 is used to control the operation of the air compressor 7. In order to improve the cleanliness of the gas, a filtering device is provided in the low-pressure cylinder 5. The impurities and water vapor in the gas are filtered and absorbed by the filtering device, which is convenient for the air compressor 7 to compress and recycle the gas, and also ensures the purity of the gas in the vibration reduction system, avoids the dirty gas from corroding and damaging important components such as the air compressor 7, the high-pressure gas storage device 10 and the air spring 1, and improves the service life of the vibration reduction system. It can be understood that the specific installation method of the filtering device in the low-pressure cylinder 5 and the specific structural form of the filtering device do not need to be specifically limited, as long as the clean filtration of the gas can be satisfied.

[0028] In this embodiment, a low-pressure cylinder 5 is provided to store the gas discharged from the air spring 1, and a pressure control valve 6 is provided between the air compressor 7 and the low-pressure cylinder 5. In the vibration reduction equipment of the prior art, the gas discharged from the air spring 1 is directly discharged into the atmosphere, while the vibration reduction system of this embodiment can achieve the recycling of the gas discharged to the outside. Specifically, the gas discharged from the air spring 1 enters the low-pressure cylinder 5 through the height control valve 3, and the pressure control valve 6 controls the operation timing of the air compressor 7 according to the gas pressure value in the low-pressure cylinder 5, ensuring that the gas pressure of the entire vibration reduction system remains balanced, and well realizes the recycling of gas in the vibration reduction system, solves the adverse effects of gas discharge on driving safety during the circulation of pressure gas, and improves the stability and safety of vehicle operation. It can be understood that by pre-setting the pressure threshold in the low-pressure cylinder 5, when the pressure control valve 6 detects that the pressure value in the low-pressure cylinder 5 is greater than the threshold, the air compressor 7 is controlled to operate to compress the gas. The specific value of the threshold can be adaptively selected and adjusted according to the actual operation of the vehicle.

[0029] In this embodiment, the air compressor 7 is connected to the high-pressure gas storage device 10 through the gas pipeline 4 13, the high-pressure gas storage device 10 is connected to the height control valve 3 through the gas pipeline 3 9, the height control valve 3 is connected to the air spring 1 through the gas pipeline 1 2, and the height control valve 3 is connected to the air compressor 7 through the gas pipeline 2 4. Further, the low-pressure cylinder 5 and the pressure control valve 1 6 are both arranged on the gas pipeline 2 4. It can be understood that an additional air chamber and a pressure difference device (not shown in the figure) can also be arranged in the air spring 1, and the inflation and exhaust stability of the air spring 1 can be improved by the additional air chamber, and the pressure change in the air spring 1 can be monitored in real time by the pressure difference device to improve the safety of the use of the air spring 1.

[0030] In this embodiment, a height control rod 8 is also included, one end of which is connected to the air spring 1; the other end of the height control rod 8 is connected to the height control valve 3; the height control valve 3 and the height control rod 8 jointly control the inflation or exhaust of the air spring 1. The height control rod 8 monitors the height change of the air spring 1 in real time. When the height of the air spring 1 is higher or lower than the preset threshold, the height control rod 8 can feed back the relevant information to the height control valve 3, and the height control valve 3 controls the inflation or exhaust of the air spring 1. Through the cooperation of the height control valve 3 and the height control rod 8, the control accuracy of the inflation or exhaust of the air spring 1 during the change of the vehicle height is improved, and the overall damping performance of the damping system is improved. It can be understood that in actual application, the height threshold of the air spring 1 can be designed and adjusted according to the specific circumstances such as the structural setting of the vehicle, the load setting of the vehicle, and the road conditions of the driving route, so as to maximize the scope of application of the damping system.

[0031] In this embodiment, a standby high-pressure gas storage device 12 is also included, and the standby high-pressure gas storage device 12 is connected to the high-pressure gas storage device 10. Further, a second pressure control valve 11 is provided between the standby high-pressure gas storage device 12 and the high-pressure gas storage device 10, and the second pressure control valve 11 is used to control the standby high-pressure gas storage device 12 to charge the high-pressure gas storage device 10.

[0032] In this embodiment, by setting a spare high-pressure gas storage device 12, and controlling and adjusting the timing and amount of the spare high-pressure gas storage device 12 charging the high-pressure gas storage device 10 through the pressure control valve 11, it is ensured that the amount of compressed gas in the vibration reduction system can continuously meet the vibration reduction requirements during the operation of the vehicle, and it also has the advantages of convenient disassembly and assembly and easy gas replenishment operation. When the vehicle arrives at the station, the entire vibration reduction system is replenished and maintained by replenishing gas into the spare high-pressure gas storage device 12, which is convenient and efficient, and improves the reliability and maintenance convenience of the vibration reduction system. It can be understood that the pressure threshold when the compressed gas in the high-pressure gas storage device 10 meets the vibration reduction requirements of the vehicle is pre-set. When the pressure control valve 11 detects that the pressure of the compressed gas in the high-pressure gas storage device 10 is lower than the threshold, the high-pressure gas storage device 12 is controlled to replenish gas into the high-pressure gas storage device 10. The specific value of the threshold can be adaptively selected and adjusted according to the actual operation of the vehicle.

[0033] In this embodiment, after the air spring 1 is inflated, the amount of remaining compressed gas in the high-pressure gas storage device 10 is not less than 10% of the total amount of compressed gas. The main purpose of retaining a portion of compressed gas in the high-pressure gas storage device 10 is to facilitate the compressed gas generated in the air compressor 7 to smoothly enter the high-pressure gas storage device 10, thereby ensuring the smooth and continuous operation of the vibration reduction system. It can be understood that after the air spring 1 is inflated, the content of the remaining compressed gas in the high-pressure gas storage device 10 is determined after reasonable consideration of the total volume of the device. To ensure that the compressed gas can be finally filled into the air spring 1, at least 9 bar of compressed air is required. In this embodiment, reserving at least 10% of the compressed air in the high-pressure gas storage device 10 can ensure the normal circulation of the gas inside the vibration reduction system.

[0034] Working principle: During the operation of the vehicle, when the height control rod 8 detects that the height of the air spring 1 is lower than the threshold, the information is fed back to the height control valve 3, and the height control valve 3 controls the high-pressure gas storage device 10 to fill the air spring 1 with compressed gas. When the height detection rod 8 detects that the height of the air spring 1 reaches the threshold, the relevant information is fed back to the height control valve 3, and the height control valve 3 controls the high-pressure gas storage device 10 to stop filling the air spring 1 with compressed gas. When the height detection rod 8 detects that the height of the air spring 1 is higher than the threshold, the relevant information is fed back to the height control valve 3, and the height control valve 3 controls the air spring 1 to discharge the excess gas into the low-pressure cylinder 5. When the pressure control valve 6 detects that the gas pressure value in the low-pressure cylinder 5 reaches the preset value, it controls the air compressor 7 to run, and the compressed gas generated in the air compressor 7 enters the high-pressure gas storage device 10 for storage to meet the inflation needs of the air spring 1. In this way, the gas is circulated in the vibration reduction system. In particular, when the pressure control valve 11 detects that the compressed gas content in the high-pressure gas storage device 10 is lower than the threshold value, the high-pressure gas storage device 12 is controlled to fill the high-pressure gas storage device 10 with compressed gas to ensure that the pressure gas inside the shock absorbing system continues to meet the shock absorbing requirements for smooth operation of the vehicle.

[0035] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can use the above disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the spirit and technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solutions of the present invention still fall within the scope of protection of the technical solutions of the present invention.

Claims

1. A vibration reduction system for a vacuum tube ultra-high-speed maglev vehicle, characterized in that: include: An air spring (1), a height control valve (3), an air compressor (7) and a high-pressure air storage device (10); the air compressor (7), the high-pressure air storage device (10), the height control valve (3) and the air spring (1) are connected in sequence, and the height control valve (3) is also connected to the air compressor (7); the height control valve (3) is used to control the inflation or exhaust of the air spring (1); the compressed air generated by the air compressor (7) passes through the high-pressure air storage device (10) and the height control valve (3) in sequence and then enters the air spring (1), thereby achieving inflation of the air spring (1); the gas discharged from the air spring (1) passes through the height control valve (3) and then enters the air compressor (7), thereby achieving reciprocating circulation of the gas; A low-pressure cylinder (5) is provided between the height control valve (3) and the air compressor (7), and the low-pressure cylinder (5) is used to store gas discharged from the air spring (1); A pressure control valve (6) is provided between the low-pressure cylinder (5) and the air compressor (7), and the pressure control valve (6) is used to control the operation of the air compressor (7); It also comprises a height control rod (8), one end of which is connected to the air spring (1); the other end of which is connected to the height control valve (3); the height control valve (3) and the height control rod (8) jointly control the inflation or deflation of the air spring (1); A filtering device is provided in the low-pressure cylinder (5).

2. The vibration reduction system for vacuum tube ultra-high-speed maglev vehicles according to claim 1, characterized in that: The air compressor (7) is connected to the high-pressure gas storage device (10) via a gas pipeline four (13), the high-pressure gas storage device (10) is connected to the height control valve (3) via a gas pipeline three (9), the height control valve (3) is connected to the air spring (1) via a gas pipeline one (2), and the height control valve (3) is connected to the air compressor (7) via a gas pipeline two (4).

3. The vibration reduction system for vacuum tube ultra-high-speed maglev vehicles according to claim 2, characterized in that: The low-pressure cylinder (5) and the pressure control valve one (6) are both arranged on the gas pipeline two (4).

4. The vibration reduction system for a vacuum tube ultra-high-speed maglev vehicle according to any one of claims 1 to 3, characterized in that: It also includes a spare high-pressure gas storage device (12), wherein the spare high-pressure gas storage device (12) is connected to the high-pressure gas storage device (10).

5. The vibration reduction system for vacuum tube ultra-high-speed maglev vehicles according to claim 4, characterized in that: A second pressure control valve (11) is provided between the standby high-pressure gas storage device (12) and the high-pressure gas storage device (10), and the second pressure control valve (11) is used to control the standby high-pressure gas storage device (12) to charge the high-pressure gas storage device (10).

6. The vibration reduction system for a vacuum tube ultra-high-speed maglev vehicle according to any one of claims 1 to 3, characterized in that: After the air spring (1) is inflated, the amount of remaining compressed gas in the high-pressure gas storage device (10) is not less than 10% of the total amount of compressed gas.

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