CN109484416A - A kind of pneumatic noise reduction system of bullet train and method - Google Patents
A kind of pneumatic noise reduction system of bullet train and method Download PDFInfo
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- CN109484416A CN109484416A CN201811606540.9A CN201811606540A CN109484416A CN 109484416 A CN109484416 A CN 109484416A CN 201811606540 A CN201811606540 A CN 201811606540A CN 109484416 A CN109484416 A CN 109484416A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C17/00—Arrangement or disposition of parts; Details or accessories not otherwise provided for; Use of control gear and control systems
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
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Abstract
The invention discloses a kind of pneumatic noise reduction system of bullet train and method, which includes signal picker, controller and two air cannon generating devices；Signal picker is connect with controller, and the controller is also connect with two air cannon generating devices；Each air cannon generating device includes air stream transmitter, total air duct, the first supercharging equipment and the second supercharging equipment, and each supercharging equipment is connect by total air duct with the air inlet of air stream transmitter；First supercharging equipment and the second supercharging equipment are connect with controller.The present invention is based on air jets to the interference performance in boundary layer, pass through active noise reduction system under the premise of not changing train shape and material in conjunction with the aerodynamic characteristic in bullet train traveling process, improve train pneumatic characteristic, improves the comfort level and energy-saving safe of train.
Description
Technical field
The invention belongs to technical field of rail traffic, and in particular to a kind of pneumatic noise reduction system of bullet train and method.
Background technique
In the past 10 years, while the development that high-speed rail cause is advanced by leaps and bounds in China, bullet train noise problem is more and more tighter
Weight.According to correlative study, when train speed is less than 315km/h, urban rail noise is main noise source, at noise and train
2.6 powers of speed are directly proportional；When train speed is greater than 315km/h, aerodynamic noise plays absolute leading role, pneumatically makes an uproar
Sound is directly proportional to 7 powers of train speed, so, noise has become the problem of restricting one of train speed raising and can not be ignored.
Existing noise reduction approach be mainly pass through optimization car body streamline be related to and car door, vehicle window compartment between it is smooth
Processing, while acoustic material is added to optimize environment of riding in compartment on side wall.However, existing noise-reduction method effect has
Limit, in fact in bullet train traveling process, noise, which forms turbulent flow with laminar flow separation at the tailstock, inseparable relationship.
Therefore it is badly in need of at present a kind of in the case where not changing the shape of vehicle, be effectively reduced that train generates during high-speed cruising makes an uproar
The method of sound.
Summary of the invention
For above-mentioned deficiency in the prior art, the pneumatic noise reduction system of bullet train provided by the invention and method are solved
The existing pneumatic noise-reduction method effect of bullet train is limited, and the generation for not accounting for noise separates pass with headstock or tailstock airflow layer
The problem of being.
In order to achieve the above object of the invention, the technical solution adopted by the present invention are as follows: a kind of pneumatic noise reduction system of bullet train,
Including signal picker, controller and two air cannon generating devices；
The signal picker and air cannon generating device are connect with controller；
Each air cannon generating device includes air stream transmitter, total air duct, the first supercharging equipment and
Two supercharging equipments, each supercharging equipment are connect by total air duct with the air inlet of air stream transmitter；
First supercharging equipment and the second supercharging equipment are connect with controller.
Further, the signal picker includes several noise transducers and several clap formula pressure-sensitive piece, Mei Gesuo
It states noise transducer and claps formula pressure-sensitive piece and connect with controller；The noise transducer is set to inside every section compartment,
The noise that is generated for acquiring interior during train driving due to air-flow is simultaneously uploaded to controller；The bat formula pressure-sensitive piece
It is set to every section compartment top outer surface, the stream pressure for acquiring vehicle exterior during train driving is distributed feelings
Condition is simultaneously uploaded to controller；
The controller is set in Train Control room, according to the noise signal of noise transducer acquisition and claps formula pressure-sensitive piece
The movement of the stream pressure signal control air cannon generating device of acquisition；
Two air cannon generating devices are respectively arranged at train head's top outer surface and tailstock top outer table
Face launches high-speed air flow according to the control signal of controller, realizes pneumatic noise reduction.
Further, first supercharging equipment and the second supercharging equipment structure are identical, mechanical, electrical including cylinder, exhausting
Machine, air duct, check valve, solenoid valve, pressure sensor and two range sensors；
The gas outlet of the air inlet of the cylinder and exhaust fan connects, the gas outlet of the cylinder by air duct with
Total air duct connection；
The check valve is set on the air inlet of cylinder；
The solenoid valve is set on air duct；
Two range sensors are respectively arranged at the top surface and bottom surface of the piston rod of cylinder, the piston rod top
Portion is connected to motor
The pressure sensor is set to cylinder interior；
The exhaust fan, solenoid valve, two range sensors and pressure sensor are connect with controller, and the motor is logical
Overdrive circuit is connect with controller.
Further, the air stream transmitter includes several air stream launching tubes equidistantly arranged in parallel；
The air inlet of each air stream launching tube is connect with total air duct；
Air inlet one end bottom of the air stream transmitter adjusts component by direction and is fixed on outside train head top
Side surface or tailstock top outer surface；
The direction adjustment component includes angular transducer, mechanical diverter and turns to driving motor, and the angle passes
Sensor is set on mechanical diverter, and the direction adjustment end of the mechanical diverter is connect with air stream transmitter, described
Mechanical diverter is connect by turning to driving motor with controller.
Further, the controller is STC12C5A60S2 series monolithic；
The noise transducer is TZ-2KA type noise transducer；
The motor and steering driving motor are maxon DCX motor；
Main control chip model L298N in the driving circuit；
The model of the pressure sensor is specially FCC-200N；
The model of the range sensor is specially LP-50F；
The model of the angular transducer is specially HAPS21.
A kind of pneumatic noise-reduction method of bullet train, comprising the following steps:
S1, during train driving, judge train running speed whether reach open noise reduction system threshold speed；
If so, entering step S2；
Otherwise, S4 is entered step；
S2, noise reduction system is opened, the noise signal in compartment and the stream pressure outside compartment is acquired by signal picker
Signal, and it is sent to controller, enter step S3；
S3, the control signal received is analyzed by controller, judges whether that flow boundary layer air separation situation occurs；
If so, starting noise reduction system and entering step S5；
Otherwise, S4 is entered step；
S4, continue normally travel, and return step S1；
S5, noise air-flow is interfered by controller control air cannon generating device transmitting high-speed air flow, is realized
Pneumatic noise reduction.
Further, controller control air cannon generating device transmitting high-speed air flow includes that control is high in the step S5
The generation of fast air stream and the direction of the launch for emitting and controlling high-speed air flow.
Further, the method for the generation and transmitting of high-speed air flow is controlled specifically:
A1, the exhaust fan work in the first supercharging equipment is controlled by controller, admits air into cylinder；
A2, when the air in cylinder is full of, controller control motor-driven cylinder piston rod make air compressed action,
The solenoid valve in the first supercharging equipment is opened by controller simultaneously, air stream is made to enter total air conductance along air duct
Pipe, and then high-speed air flow is generated, and launch by air stream transmitter；
A3, the first supercharging equipment emit high-speed air flow while, pass through controller control the second supercharging equipment pumping
Fanman makees to be inflated cylinder；
When the piston rod of the cylinder in the first supercharging equipment, which makees air compressed action, touches cylinder bottom, first is closed
Solenoid valve in supercharging equipment, the piston rod by the cylinder in the first supercharging equipment of motor driven are movable upwards；It controls simultaneously
Second supercharging equipment is generated and transmitted by high-speed air flow；
A4, step A1-A3 is repeated, the first supercharging equipment and the second supercharging equipment alternately and repeatedly work is controlled by controller
Make, realizes the control generated with transmitting high-speed air flow.
Further, the method for the direction of the launch of high-speed air flow is controlled specifically:
B1, noise transducer is analyzed by controller and claps the signal that formula pressure-sensitive piece uploads, analyze train exterior air-flow side
Interlayer separates situation；
B2, situation is separated according to the flow boundary layer air analyzed, controlling steering driving motor by controller makes mechanically
Diverter rotates, and when the target angle direction for the signal arrival controller setting that angular transducer uploads, controls machine
Tool formula diverter stops direction rotation, realizes the control of the high-speed air flow direction of the launch.
The invention has the benefit that the pneumatic noise reduction system of bullet train provided by the invention and method, are penetrated based on air
Stream is not changing train shape and material in conjunction with the aerodynamic characteristic in bullet train traveling process to the interference performance in boundary layer
Under the premise of, by active noise reduction system, improve train pneumatic characteristic, improves the comfort level and energy-saving safe of train.
Detailed description of the invention
Fig. 1 is high speed train pneumatic noise reduction system structure chart of the present invention；
Fig. 2 is signal amplification circuit schematic diagram in the present invention；
Fig. 3 is the first supercharging equipment and the second supercharging equipment structure chart in the present invention；
Fig. 4 is air stream emitter structures figure in the present invention；
Fig. 5 is high speed train pneumatic noise-reduction method flow chart of the present invention；
Fig. 6 be realize pneumatic noise reduction Airflow in the present invention flow to schematic diagram；
Wherein: 1, signal picker；2, air cannon generating device；3, controller；4, air stream transmitter；5, total air stream
Conduit；6, exhaust fan；7, motor；8, cylinder；9, piston rod；10, range sensor；11, pressure sensor；12, air conductance
Pipe；13, solenoid valve；14, air stream launching tube；15, check valve.
Specific embodiment
A specific embodiment of the invention is described below, in order to facilitate understanding by those skilled in the art this hair
It is bright, it should be apparent that the present invention is not limited to the ranges of specific embodiment, for those skilled in the art,
As long as various change is in the spirit and scope of the present invention that the attached claims limit and determine, these variations are aobvious and easy
See, all are using the innovation and creation of present inventive concept in the column of protection.
As shown in Figure 1, a kind of pneumatic noise reduction system of bullet train, including signal picker 1, controller 3 and two air
Rifle generating device 2；
Signal picker 1 and air cannon generating device 2 are connect with controller 3；
Each air cannon generating device 2 includes air stream transmitter 4, total air duct 5, the first supercharging equipment and second
Supercharging equipment, each supercharging equipment are connect by total air duct 5 with the air inlet of air stream transmitter 4；
First supercharging equipment and the second supercharging equipment are connect with controller 3.
Wherein, signal picker 1 includes several noise transducers and several clap formula pressure-sensitive piece, each noise transducer
It is connect with controller 3 with formula pressure-sensitive piece is clapped；Noise transducer be as built in microphone one the condenser type of sound sensitive is stayed
Electret microphone, sound wave vibrate the electret film in microphone, lead to the variation of capacitor, and generate the small of variation of being corresponding to it
Voltage, to realize the conversion of acoustical signal to electric signal；Noise transducer is placed in middle part in each compartment, for acquiring train
Interior converts a faint capacitance voltage signal for the voice signal due to the noise that air-flow generates in driving process
It exports by signal amplification circuit to controller 3, the particular circuit configurations of the signal amplification circuit are as shown in Fig. 2, common emitter
Amplifying circuit has biggish voltage amplification, Current amplifier and power amplification multiple, and input resistance is small, and output resistance is big, ginseng
The characteristics of number rather moderate.Bat formula pressure-sensitive piece is sticked at the position that Train surface surveys pressure, then will be connected with each pressure-sensitive piece
Plastic syringe guides on vehicle the place for having opening along car body outer surface, can effectively substitute pressure tap without damaging car body table
Face will clap formula pressure-sensitive piece and be set to every section compartment top outer surface, acquires the gas of vehicle exterior during train driving
Flowing pressure signal is simultaneously uploaded to controller 3.
Controller 3 is set in Train Control room, the noise signal and bat that controller 3 can be acquired according to noise transducer
The movement of the stream pressure distribution situation control air cannon generating device 2 of formula pressure-sensitive piece acquisition；
Two air cannon generating devices 2 are respectively arranged at train head's top outer surface and tailstock top outer surface,
Launch high-speed air flow according to the control signal of controller 3, realizes pneumatic noise reduction.
As shown in figure 3, the first supercharging equipment and the second supercharging equipment structure are identical, it include cylinder 8, exhaust fan 6, motor
7, air duct 12, check valve 15, solenoid valve 13, pressure sensor 11 and two range sensors 10；
The air inlet of cylinder 8 is connect with the gas outlet of exhaust fan 6, and the gas outlet of cylinder 8 is by air duct 12 and always
Air duct 5 connects；
Check valve 15 is set on the air inlet of cylinder 8, when the air in cylinder 8 is full of, does air pressure by piston rod 9
When contracting acts, the pressure generated to 8 air inlet of cylinder can be such that check valve 15 is automatically closed, and a part is empty when avoiding air compression
Gas can go out from 8 air inlet of cylinder, influence air stream launching effect；
Solenoid valve 13 is set on air duct 12, when cylinder 8 is generated and transmitted by air stream, in the control of controller 3
Under system, solenoid valve 13 can be automatically closed or open, and coordinate the work of two supercharging equipments, be more efficiently generated and transmitted by air
Stream；
Two range sensors 10 are respectively arranged at the top surface and bottom surface of the piston rod 9 of cylinder 8, piston rod 9
Top is connect with motor 7；The range sensor 10 at 9 top of piston rod detects at the top of piston rod 9 to 8 upper surface of cylinder distance hair
When changing, controller 3 controls solenoid valve 13 and opens, and starts to emit air stream, when the range sensor 10 of 9 bottom of piston rod is examined
When measuring 9 bottom of piston rod and touching 8 bottom inner surface of cylinder, controller 3 controls motor 7 and piston rod 9 is driven to playback, and closes
Solenoid valve 13 terminates the air stream transmitting of current booster equipment；
Pressure sensor 11 is set to inside cylinder 8, for detecting the air pressure in cylinder 8, and then judges air in cylinder 8
Whether it is full of；
Exhaust fan 6,13, two range sensors 10 of solenoid valve and 11 sensor of pressure sensor are connect with controller 3,
Motor 7 is connect by driving circuit with controller 3.
As shown in figure 4, air stream transmitter 4 includes several air stream launching tubes 14 arranged in parallel, and two neighboring
It is spaced apart between air stream launching tube 14, to adjust the launch angle of air stream；
The air inlet of each air stream launching tube 14 is connect with total air duct 5；
Air inlet one end bottom of air stream transmitter 4 adjusts component by direction and is fixed on train head's top outer table
Face or tailstock top outer surface；
Direction adjustment component includes angular transducer, mechanical diverter and turns to driving motor, and angular transducer is arranged
In on mechanical diverter, the direction adjustment end of mechanical diverter is connect with air stream transmitter 4, and mechanical diverter passes through
Driving motor is turned to connect with controller 3.The environmental signal that controller 3 acquires signal picker 1 is analyzed, and then is determined
Emit air stream and realizes the best angle and direction of noise reduction effect.
Above controller 3 is STC12C5A60S2 series monolithic, it has high speed, low-power consumption and jamproof function,
It is internal containing 10-bit high speed AD conversion unit, therefore does not need to add an analog-digital converter to handle data, while it
Memory space with large capacity compares judgement acquisition data so as to chip.
The chip of the driving motor is L298N chip, has the beneficial effect that L298N principle and H bridge using this chip
Driving circuit is similar, easy for installation, and positive and negative rotation and the electric machine speed regulation of driving motor may be implemented；
Noise transducer is TZ-2KA type noise transducer, and this noise transducer is a wide audio range, high sound intensity
Dynamic range, sensor noise easy to operate；The sensor bulk is small, light-weight, flexible for installation, and measurement of audio frequency range is covered
Whole frequencies (20~20KHz) that human ear can be heard are covered；
Motor and steering driving motor are maxon DCX motor, and the motor speed is steadily and the diameter range of configuration is wide；
The model of pressure sensor is specially FCC-200N pressure sensor, which has small in size, easy to install, survey
The advantages that accuracy of measurement is accurate；
The model of range sensor is specially LP-50F linear type range sensor, which is that a kind of high-precision is conductive
Plastic opaque sensor, high resolution, Enclosure Strength height are suitable for working under high-pressure situations；
The model of angular transducer is specially HAPS21 angular transducer, which is a kind of hollow ultrathin sensing
Device is easily installed, and can be worked under hyperbaric environment.
As shown in figure 5, the present invention also provides a kind of pneumatic noise-reduction methods of bullet train, comprising the following steps:
S1, during train driving, judge train running speed whether reach open noise reduction system threshold speed；
If so, entering step S2；
Otherwise, S4 is entered step；
S2, noise reduction system is opened, the noise signal in compartment and the stream pressure outside compartment is acquired by signal picker
Signal, and it is sent to controller, and enter step S3；
S3, the control signal received is analyzed by controller, judges whether that flow boundary layer air separation situation occurs；
If so, starting noise reduction system and entering step S5；
Otherwise, S4 is entered step；
S4, continue normally travel, and return step S1；
S5, noise air-flow is interfered by controller control air cannon generating device transmitting high-speed air flow, is realized
Pneumatic noise reduction；
The flow direction for realizing pneumatic noise reduction Airflow is illustrated in Fig. 6；
Controller control air cannon generating device transmitting high-speed air flow includes control high-speed air flow in above-mentioned steps S5
Generation with emit and control high-speed air flow the direction of the launch；
Wherein, the method for the generation and transmitting of high-speed air flow is controlled specifically:
A1, the exhaust fan work in the first supercharging equipment is controlled by controller, admits air into cylinder；
A2, when the air in cylinder is full of, controller control motor-driven cylinder piston rod make air compressed action,
The solenoid valve in the first supercharging equipment is opened by controller simultaneously, air stream is made to enter total air conductance along air duct
Pipe, and then high-speed air flow is generated, and launch by air stream transmitter；
A3, the first supercharging equipment emit high-speed air flow while, pass through controller control the second supercharging equipment pumping
Fanman makees to be inflated cylinder；
When the piston rod of the cylinder in the first supercharging equipment, which makees air compressed action, touches cylinder bottom, first is closed
Solenoid valve in supercharging equipment, the piston rod by the cylinder in the first supercharging equipment of motor driven are movable upwards；It controls simultaneously
Second supercharging equipment is generated and transmitted by high-speed air flow；
A4, step A1-A3 is repeated, the first supercharging equipment and the second supercharging equipment alternately and repeatedly work is controlled by controller
Make, realizes the control generated with transmitting high-speed air flow.
In the generation and emission process for stating control high-speed air flow in realization, controller can analyze signal picker upload
Environmental signal, determine the flow velocity size of air stream for needing to generate, and control motor speed, and then control piston rod and do air
Speed when compressed action realizes the speed of control transmitting air stream.
The method for controlling the direction of the launch of high-speed air flow specifically:
B1, noise transducer is analyzed by controller and claps the signal that formula pressure-sensitive piece uploads, analyze train exterior air-flow side
Interlayer separates situation；
B2, situation is separated according to the flow boundary layer air analyzed, controlling steering driving motor by controller makes mechanically
Diverter rotates, and when the target angle direction for the signal arrival controller setting that angular transducer uploads, controls machine
Tool formula diverter stops direction rotation, realizes the control of the high-speed air flow direction of the launch.
The invention has the benefit that the pneumatic noise reduction system of bullet train provided by the invention and method, are penetrated based on air
Stream is not changing train shape and material in conjunction with the aerodynamic characteristic in bullet train traveling process to the interference performance in boundary layer
Under the premise of, by active noise reduction system, improve train pneumatic characteristic, improves the comfort level and energy-saving safe of train.
Claims (9)
1. a kind of pneumatic noise reduction system of bullet train, which is characterized in that including signal picker (1), controller (3) and two skies
Air gun generating device (2)；
The signal picker (1) and air cannon generating device (2) are connect with controller (3)；
Each air cannon generating device (2) includes air stream transmitter (4), total air duct (5), the first supercharging equipment
With the second supercharging equipment, each supercharging equipment is connected by the air inlet of total air duct (5) and air stream transmitter (4)
It connects；
First supercharging equipment and the second supercharging equipment are connect with controller (3).
2. the pneumatic noise reduction system of bullet train according to claim 1, which is characterized in that signal picker (1) packet
It includes several noise transducers and several claps formula pressure-sensitive pieces, each noise transducer and bat formula pressure-sensitive piece are and controller
(3) it connects；The noise transducer is set to inside every section compartment, for acquire during train driving interior by
In air-flow generate noise and be uploaded to controller (3)；The bat formula pressure-sensitive piece is set to every section compartment top outer table
Face, for acquiring the stream pressure distribution situation of vehicle exterior during train driving and being uploaded to controller (3)；
The controller (3) is set in Train Control room, according to the noise signal of noise transducer acquisition and claps formula pressure-sensitive piece
The movement of stream pressure signal control air cannon generating device (2) of acquisition；
Two air cannon generating devices (2) are respectively arranged at train head's top outer surface and tailstock top outer table
Face launches high-speed air flow according to the control signal of controller (3), realizes pneumatic noise reduction.
3. the pneumatic noise reduction system of bullet train according to claim 2, which is characterized in that
First supercharging equipment and the second supercharging equipment structure are identical, include cylinder (8), exhaust fan (6), motor (7), sky
Airflow duct (12), check valve (15), solenoid valve (13), pressure sensor (11) and two range sensors (10)；
The air inlet of the cylinder (8) is connect with the gas outlet of exhaust fan (6), and the gas outlet of the cylinder (8) passes through air stream
Conduit (12) is connect with total air duct (5)；
The check valve (15) is set on the air inlet of cylinder (8)；
The solenoid valve (13) is set on air duct (12)；
Two range sensors (10) are respectively arranged at the top surface and bottom surface of the piston rod (9) of cylinder (8), the work
It is connect at the top of stopper rod (9) with motor (7)；
It is internal that the pressure sensor (11) is set to cylinder (8)；
The exhaust fan (6), solenoid valve (13), two range sensors (10) and pressure sensor (11) with controller (3)
Connection, the motor (7) are connect by driving circuit with controller (3).
4. the pneumatic noise reduction system of bullet train according to claim 3, which is characterized in that the air stream transmitter (4)
The air stream launching tube (14) equidistantly arranged in parallel including several；
The air inlet of each air stream launching tube (14) is connect with total air duct (5)；
Air inlet one end bottom of the air stream transmitter (4) adjusts component by direction and is fixed on train head's top outer
Surface or tailstock top outer surface；
The direction adjustment component includes angular transducer, mechanical diverter and steering driving motor, the angular transducer
It is set on mechanical diverter, the direction adjustment end of the mechanical diverter is connect with air stream transmitter (4), the machine
Tool formula diverter is connect by turning to driving motor with controller (3).
5. the pneumatic noise reduction system of bullet train according to claim 4, which is characterized in that the controller (3) is
STC12C5A60S2 series monolithic；
The noise transducer is TZ-2KA type noise transducer；
The motor (7) and steering driving motor are maxon DCX motor；
Main control chip model L298N in the driving circuit；
The model of the pressure sensor (11) is specially FCC-200N；
The model of the range sensor (10) is specially LP-50F；
The model of the angular transducer is specially HAPS21.
6. a kind of pneumatic noise-reduction method of bullet train, which comprises the following steps:
S1, during train driving, judge train running speed whether reach open noise reduction system threshold speed；
If so, entering step S2；
Otherwise, S4 is entered step；
S2, noise reduction system is opened, the noise signal in compartment and the stream pressure signal outside compartment is acquired by signal picker,
And it is sent to controller, enter step S3；
S3, the control signal received is analyzed by controller, judges whether that flow boundary layer air separation situation occurs；
If so, starting noise reduction system and entering step S5；
Otherwise, S4 is entered step；
S4, continue normally travel, and return step S1；
S5, noise air-flow is interfered by controller control air cannon generating device transmitting high-speed air flow, is realized pneumatic
Noise reduction.
7. the pneumatic noise-reduction method of bullet train according to claim 6, which is characterized in that controller control in the step S5
Air cannon generating device transmitting high-speed air flow processed includes the generation and transmitting and control high-speed air flow for controlling high-speed air flow
The direction of the launch.
8. the pneumatic noise-reduction method of bullet train according to claim 7, which is characterized in that control the generation of high-speed air flow
With the method for transmitting specifically:
A1, the exhaust fan work in the first supercharging equipment is controlled by controller, admits air into cylinder；
A2, when the air in cylinder is full of, controller control motor-driven cylinder piston rod make air compressed action, simultaneously
The solenoid valve in the first supercharging equipment is opened by controller, air stream is made to enter total air duct along air duct, into
And high-speed air flow is generated, and launch by air stream transmitter；
A3, the first supercharging equipment emit high-speed air flow while, pass through controller control the second supercharging equipment exhaust fan
Work is inflated cylinder；
When the piston rod of the cylinder in the first supercharging equipment, which makees air compressed action, touches cylinder bottom, the first pressurization is closed
Solenoid valve in equipment, the piston rod by the cylinder in the first supercharging equipment of motor driven are movable upwards；Control second simultaneously
Supercharging equipment is generated and transmitted by high-speed air flow；
A4, step A1-A3 is repeated, the first supercharging equipment is controlled by controller and the second supercharging equipment alternately and repeatedly works, it is real
Now generate the control with transmitting high-speed air flow.
9. the pneumatic noise-reduction method of bullet train according to claim 7, which is characterized in that control the transmitting of high-speed air flow
The method in direction specifically:
B1, noise transducer is analyzed by controller and claps the signal that formula pressure-sensitive piece uploads, analyze train exterior flow boundary layer air
Separate situation；
B2, situation is separated according to the flow boundary layer air analyzed, controlling steering driving motor by controller makes mechanically to turn to
Device rotates, and when the target angle direction for the signal arrival controller setting that angular transducer uploads, control is mechanical
Diverter stops direction rotation, realizes the control of the high-speed air flow direction of the launch.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109941297A (en) * | 2019-04-16 | 2019-06-28 | 郑州铁路职业技术学院 | A kind of shockproof denoising structure of bullet train and noise-reduction method |
| CN110077188A (en) * | 2019-04-16 | 2019-08-02 | 郑州铁路职业技术学院 | A kind of shockproof denoising structure of bullet train |
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| CN109484416B (en) | 2019-11-12 |
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