CN107167229A - A kind of shell solid liquid interation detecting system and its control method - Google Patents
A kind of shell solid liquid interation detecting system and its control method Download PDFInfo
- Publication number
- CN107167229A CN107167229A CN201710403030.0A CN201710403030A CN107167229A CN 107167229 A CN107167229 A CN 107167229A CN 201710403030 A CN201710403030 A CN 201710403030A CN 107167229 A CN107167229 A CN 107167229A
- Authority
- CN
- China
- Prior art keywords
- fluid
- shell
- module
- solid liquid
- container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000007787 solid Substances 0.000 title claims abstract description 50
- 239000007788 liquid Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000012530 fluid Substances 0.000 claims abstract description 124
- 238000001514 detection method Methods 0.000 claims abstract description 37
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 9
- 238000012545 processing Methods 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 230000006870 function Effects 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 12
- 238000004458 analytical method Methods 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 239000004033 plastic Substances 0.000 claims description 11
- 229920003023 plastic Polymers 0.000 claims description 11
- 238000002474 experimental method Methods 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 8
- 229910000838 Al alloy Inorganic materials 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 6
- 238000010146 3D printing Methods 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 claims description 4
- 230000003321 amplification Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 108010076504 Protein Sorting Signals Proteins 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000000977 initiatory effect Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims description 3
- 241001274660 Modulus Species 0.000 claims description 2
- 238000004364 calculation method Methods 0.000 claims description 2
- 230000006698 induction Effects 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 claims description 2
- 238000004064 recycling Methods 0.000 claims description 2
- 230000009131 signaling function Effects 0.000 claims description 2
- 238000003079 width control Methods 0.000 claims description 2
- 230000033228 biological regulation Effects 0.000 claims 1
- 239000003292 glue Substances 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- 230000005611 electricity Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 241000736192 Ostrya virginiana Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
- G01H11/08—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means using piezoelectric devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
A kind of shell solid liquid interation detecting system, for realizing solid liquid interation signal detection of the shell under fluid impact, is made up of machine power subsystem, fluid control subsystem and vibration detection analyzing subsystem；The machine power subsystem is used for the support frame of device physical entity and the receiving of fluid, and driving disturbance executing agency makes fluid produce certain initial disturbance, and then produces fluid impact；Fluid conveying, circulation, flow control and overflow control that the fluid control subsystem is used to realize in shell solid liquid interation detection process；The vibration detection analyzing subsystem is used to realize the collection of the shell solid liquid interation data under the conditions of fluid impact, conversion and handled.The on-line checking and Automated condtrol of the achievable shell solid liquid interation of the present invention, and detection code and scheme more efficiently, flexible can be provided.
Description
Technical field
The present invention relates to mechanical-electrical-hydraulic integration engineering detecting and control field, coupling is consolidated more particularly, to towards a kind of shell stream
Close vibration detecting system and its control method.
Background technology
Thin-walled shell is widely used in building, ship, oil, change with its good mechanical property and geometrical property
Multiple engineering fields such as work, mining, metallurgy, electric, Aeronautics and Astronautics, machinery, agricultural, food, medical treatment, biology.With modern work
Industry technology is continued to develop, and the vibration and noise problem of thin-walled shell progressively causes concern.
Thin-walled shell vibration dynamics model is broadly divided into two classes：Girder construction model and shell structure model.For l/d, (l is
Pipe range, d is pipe external diameter) larger long tube can use Euler-Bernoulli Jacob (Euler-Bernoulli) beam model or pungent gram of hophornbeam
(Timoshenko) beam model is analyzed；For thin-walled shell (radius-thickness ratio ＞ 10), corresponding circumferential modulus during due to vibration
It is larger, and when tube wall thickness compared with other physical dimensions (nominal radius, length) hour, preferably use shell model to be ground
Study carefully.
In practical application in industry, with the solid coupling of stream thin-walled shell (such as pressure vessel, petroleum pipeline, spacecraft shell)
The mode of conjunction occurs, be broadly divided into fluid in shell with fluid outside shell two kinds of forms.Shell is rushed in Duo Chang, multiple activation
Hit under action condition, the vibration and noise of certain amplitude can be produced；It is some in particular cases, impact shock can cause shell tired
Labor is broken, and causes serious production accident.Therefore, thin-walled shell fluid structurecoupling impact shock mechanism of production is studied, determines that it shakes
Energy stream propagation law and radiation fields characteristic, either to the manufacture of shell component, or the inspection to correlation engineering equipment
Survey with controlling, all with important practical significance.
It is dynamic on it to detect based on its static mechanical property more than the current vibration characteristics detecting system on thin-walled shell
The method and apparatus of the detection of mechanical characteristic is less, and the vibration-mode analysis focused mostly under vacuum is swept with Dispersion
In terms of retouching.Therefore, a kind of shell solid liquid interation detecting system is researched and developed to be necessary.
The content of the invention
In order to solve shell fluid impact vibration dynamics specificity analysis and its Related Technical Issues, the present invention provides a kind of
The on-line checking and Automated condtrol of shell solid liquid interation can be achieved, and detection code more efficiently, flexible can be provided
With the shell solid liquid interation detecting system and its control method of scheme.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of shell solid liquid interation detecting system, the shell solid liquid interation detecting system realizes shell in stream
Solid liquid interation signal detection under body impact, is analyzed by machine power subsystem, fluid control subsystem and vibration detection
Subsystem is constituted；
The machine power subsystem is used for the support frame of device physical entity and the receiving of fluid, and driving disturbance
Executing agency makes fluid produce certain initial disturbance, and then produces fluid impact；The machine power subsystem includes entity
Supporting module, fluid container module and initial disturbance module；
The fluid control subsystem be used for realize in shell solid liquid interation detection process fluid conveying, circulation,
Flow is controlled and overflow control, and the fluid control subsystem includes fluid circulation module, flow-control module and fluid overflow
Module；
The vibration detection analyzing subsystem is used to realize the shell solid liquid interation data under the conditions of fluid impact
Collection, conversion and processing, the vibration detection analyzing subsystem include signal acquisition module, A/D modular converters and data processing
Module.
Further, the solid support module is built by 4040 aluminium alloy extrusions and the corner fittings of pairing；Described 4040
Aluminium alloy extrusions is support frame, and be connected by corner fittings forms each other, is securedly mounted to pair by T-bolt, flange nut
On the corner fittings answered, the fixation and connection to each functional module of experiment porch are realized.
Further, the fluid container module is made up of double cylinder combination containers, drain tube, bath container；Described
Double cylinder combination containers are made by transparent PET material, are fixed on by bonding connected mode in solid support module；It is double
Cylinder combination container includes fluid bearing receptacle and shell container, and fluid bearing receptacle produces the fluid of motion, table to accommodate
Face indicates volume scale, in order to observe the volume situation of change of fluid in container；Shell container passes through bonding way and fluid
Container is accommodated to be connected；Shell container is connected by pipe screw thread with drain tube；Drain tube one end is connected with shell container, and the other end is stretched
Enter in bath container；Described bath container polyvinyl chloride hard material is made, and positioned at the underface of drainage port, is mainly used to connect
Receive the fluid discharged from shell container.
Further, the initial disturbance module includes Industrial PC Computer, motor drive module, stepper motor, elastic shaft coupling
Device and disturbance executing agency；Described Industrial PC Computer provides a user guidance panel interface, and arteries and veins is sent to motor drive module
Control information is rushed, the control to stepper motor rotating speed and operation duration is realized；Described motor drive module main body is adjusted for pulsewidth
Signal generator processed, receives the control instruction sent by Industrial PC Computer, then according to experimental configuration parameter, by controlling pulse
Number controls angular displacement；Motor drive module by controlling the speed and acceleration that pulse frequency rotates come controlled motor,
So as to reach speed governing and positioning to disturbing executing agency；Described stepper motor passes through under the control of motor drive module
Yielding coupling, disturbance executing agency is transferred to by power；Described disturbance executing agency is T-shaped stirring vane, in stepping electricity
Under the driving of machine, the fluid in receiving container is set to produce initial flow-field disturbance.
The fluid circulation module includes small-power water pump, rubber hose and plastic faucet, described small-power water pump
Bath container bottom is positioned over, and fluid re-circulation is discharged into double cylinder combination containers by rubber hose, fluid is realized
Recycle；Described rubber hose is fixed in solid support module with the mode of binding, for connecting small-power water pump
And plastic faucet, it is used as the transport pipeline of fluid；Described plastic faucet is installed on the top for accommodating container, for controlling
The switch and flow of circulating water flow.
The flow-control module is made up of multistage cut-off equipment and drainage lid；Described multistage cut-off equipment is by PLA materials
Material 3D printing is formed, for realizing that the flow Accurate Classification of fluid discharge process regulates and controls；The upper interface of multistage cut-off equipment is circle
Shape, is connected with the mode of pipe screw thread with shell container lower end；The lower interface of multistage cut-off equipment passes through pipe screw thread and drainage lid phase
Even, drainage lid realizes the closing of drainage port.
Described fluid overflow module is made up of spout hole and rubber hose；Described spout hole is located at fluid bearing receptacle
On wall, when waterline is reached herein, fluid will flow out from spout hole；Described rubber hose is fixed on excessive with bonding way
Discharge orifice mouthful, as the pipeline that fluid is flowed out from spout hole, will overflow fluid and is drained in bath container.
The signal acquisition module includes built-in integrated circuit vibrating sensor, sensor base, constant current adapter and double
Core cable, described built-in integrated circuit vibrating sensor is piezoelectricity induction type, and collection shell chamber wall face is produced because of fluid impact
Raw solid liquid interation signal；The lower end of built-in integrated circuit vibrating sensor passes through screw threads for fastening mode and sensor base
It is connected, to protect sensor internal sensing device and integrated circuit；Sensor base passes through bonding way and shell container
Wall is connected, and ensures certain contact stiffness, vibration signal is successfully transferred to vibration from shell container wall
Sensor；The upper end phase that the input of described constant current adapter passes through two-core cable and built-in integrated circuit vibrating sensor
Even, the faint charge signal produced to vibrating sensor by its high impedance carries out gain amplification, and is followed with reference to built-in voltage
The high impedance output signal of sensor is converted to Low ESR output signal by device；The output end of described constant current adapter passes through double
Core cable is connected with A/D modular converters, and A/D moduluss of conversion complete the analog/digital conversion of vibration signal, and pass through built-in bandpass filtering
Vibration signal frequency is locked between 0.3~100kHz by device, is then uploaded to data processing module；Described two-core cable is
The multiplexed cable of vibrating sensor, constant current adapter and A/D modular converters is connected, signal transmission and function of supplying power is realized.
Described data processing module receives the vibration signal discrete data of A/D modular converters, realize vibration signal when
Domain, frequency-domain calculations, display and store function on demand.
A kind of control method of shell solid liquid interation detecting system, the control method comprises the following steps：
1. system starts, and carries out initiation parameter setting, and set parameter includes local time, disturbance rank, dammed
Device opening, sample frequency, sampling number, storage file size and repetition detection number of times；
2. Industrial PC Computer sends driving instruction to motor drive module, motor drive module Driving Stepping Motor, stepping electricity
Machine drives T-shaped stirring vane, produces flow field initial disturbance；
3. whether flow field initial disturbance reaches set disturbance level thresholdIf reaching, motor shuts down, and opens
Drainage lid；If not up to, motor remains in operation, until reaching disturbance level threshold；
4. signal acquisition module gathers shell chamber wall face solid liquid interation signal sequence by vibrating sensor, carries out
After A/D conversions, data processing module is sent to；
5. data processing module carries out time domain, frequency domain processing, and root by multithreading respectively to Discrete signal
According to current user task demand, real-time data curve is shown by dialog box；
6. whether user needs to store current demand signal sequenceIf desired, then the number that 3 samplings are counted before and after current point in time
According to buffering area will be stored into, and according to storage file size, it is divided into corresponding data file, and local time+sequence number
Form name；
7. detection number of times whether is reachedIf reaching, stop detection；If not up to, being retracted into the and 2. walking, re-start
Detection, until reaching experiment number.
Beneficial effects of the present invention are mainly manifested in：
1) on-line checking and Automated condtrol of shell solid liquid interation can be achieved, and can provide more efficient, flexible
Detection code and scheme.
2) basic parameter of shell vibration signal can be directly gathered, analyze, the result that model inspection is arrived is qualitative or fixed
Actual flow phenomenon is converted into amount, foundation is provided for correlation engineering detecting system.
3) do not limited by math equation form and boundary condition, can be in the physical space that it can be provided freely
Relevant issues are studied.
Brief description of the drawings
Fig. 1 is detecting system structural representation；In Fig. 1：The double cylinder combination container 3- of 1- aluminium alloy extrusions supports 2-PET
Bath container 4- small-power water pump 5- rubber hose 6- plastic faucet 7- stepper motor 8- yielding coupling 9-T types are stirred
The multistage cut-off equipment 11- drainage lid 12-ICP vibrating sensor 13- constant current adapter 14- data of blade 10-PLA are mixed to adopt
Truck 15- Industrial PC Computer 16- motor drive module 17- overflow rubber hose.
Fig. 2 is detecting system workflow diagram.
Embodiment
With reference to accompanying drawing, below the present invention is described in detail.
Referring to Figures 1 and 2, a kind of shell solid liquid interation detecting system, realizes that stream of the shell under fluid impact is consolidated
Coupled vibrations signal detection, is made up of machine power subsystem, fluid control subsystem and vibration detection analyzing subsystem.
In above-mentioned functions framework, the receiving of support frame and fluid of the machine power subsystem mainly comprising entity machinery,
And driving rotating vane makes fluid produce certain initial disturbance, realizes the generation of initial flow-field disturbance.Fluid controls subsystem
System realizes fluid conveying, circulation, flow control and overflow control in the vibration analysis experimentation of fluid impact forming process
Etc. function.Described Vibration Monitoring, Analyzing subsystem is the real-time monitored part of the present invention, realizes that non-linear fluid impacts to be formed
The functions such as the collection of solid liquid interation analyze data, conversion, processing, display, the storage of process.
Machine power subsystem involved in the present invention is by solid support module, fluid container module, initial disturbance module
Composition, support frame and the receiving of fluid for device physical entity, and driving disturbance executing agency make fluid produce one
Fixed initial disturbance, and then produce fluid impact.Machine power subsystem includes the particular technique details of each functional module such as
Under：
1. solid support module is built by 4040 aluminium alloy extrusions and the corner fittings of pairing, as shown in Figure 1.4040 aluminium
Alloy profile is main support frame, is connected by corner fittings forms each other, is installed by T-bolt, flange nut fastening
On corresponding corner fittings, realize to functions such as fixation, the connections of each functional module of experiment porch.
2. fluid container module is made up of double cylinder combination containers, drain tube, bath container, as shown in Figure 1.Double cylinders
Combination container is made by transparent PET material, is fixed on by bonding connected mode in solid support module.Double cylinder groups
Close container and include fluid bearing receptacle and shell container, wherein fluid bearing receptacle is relatively large in diameter, motion is produced to accommodate
Fluid (design volume is 20 liters), surface indicates volume scale, in order to observe the volume situation of change of fluid in container.Shell
Container is connected by bonding way with fluid bearing receptacle, and its diameter is smaller, and shell is the detection target of the system, i.e. shell wall
Face.Shell container is connected by pipe screw thread with drain tube；Drain tube one end is connected with shell container, and the other end stretches into bath container
It is interior.Bath container polyvinyl chloride hard material is made, and design volume is 40 liters, positioned at the underface of drainage port, is mainly used to connect
Receive the fluid discharged from shell container.
3. initial disturbance module is comprising Industrial PC Computer, stepper motor, motor drive module, yielding coupling and T-shaped stirs
Blade is mixed, as shown in Figure 1.The execution flow of this module：User sends control letter by Industrial PC Computer to motor drive module
Breath, drive module receives and sends corresponding pulse signal to stepper motor according to control information, and stepper motor receives signal
And drive T-shaped stirring vane to rotate by shaft coupling.Industrial PC Computer is used for user oriented directly operation, to motor drive module
Pulse Width Control information is sent, and reaches by drive module the control to stepper motor rotating speed and operation duration.Stepper motor
It is fixed in mechanical support module, is T-shaped stirring vane powered rotation, rotating speed is more slow in this operation, is only appearance
Fluid in device provides an initial disturbance and allows it to be more also easy to produce fluid impact, and stepper motor can not be directly connected to direct current or friendship
Worked on stream power supply, it is necessary to use special driving power supply (stepper motor driver).(pulse signal occurs motor drive module
Device) control instruction sent by Industrial PC Computer is received, then required according to its control, by controlling the number of pulse come pilot angle
Displacement, so as to reach the purpose being accurately positioned.The speed that can be rotated simultaneously by controlling pulse frequency come controlled motor with
Acceleration, so as to reach the purpose of speed governing, controls the running status of stepper motor.Yielding coupling be used for connect stepper motor and
T-shaped stirring vane, realizes and power is forwarded into T-shaped stirring vane in driving stepper motor, so that T-shaped stirring vane starts
Rotate.T-shaped stirring vane is formed by PLA material 3D printing, for making the fluid in fluid bearing receptacle produce necessarily initial
Disturbance, so that target fluid efficiently produces fluid impact.
Fluid subsystem involved in the present invention, by fluid circulation module, flow-control module and fluid overflow module group
Into, as shown in Figure 1, realize in shell solid liquid interation detection process fluid conveying, circulation, flow control and overflow control
The functions such as system.The particular technique details that fluid control subsystem includes each functional module is as follows：
1. fluid circulation module is made up of small-power water pump, rubber hose, plastic faucet, as shown in Figure 1.Small-power
Water pump is placed in fluid bearing receptacle bottom, and fluid re-circulation is discharged into progress in fluid bearing receptacle by rubber hose
Detection next time, realizes recycling for fluid.It should be noted that to ensure that waterline is higher than in fluid bearing receptacle
Water pump, in order to avoid cause unnecessary loss.Rubber hose is fixed in rights entity supporting module with the mode of binding, for even
Small-power water pump and plastic faucet are connect, the transport pipeline of fluid is used as.Plastic faucet is installed on the upper of fluid bearing receptacle
Side, for controlling the switch and flow of circulating water flow.
2. flow-control module is made up of multistage cut-off equipment and drainage lid, as shown in Figure 1.Multistage cut-off equipment by
PLA material 3D printing is formed, and for realizing the control to Experimental Flowing Object different flow, and provides the (outlet of multiple drainage port sizes
Diameter)：12mm、16mm、20mm、24mm、28mm、32mm.Upper interface is circle, with mode and the shell water outlet of container of screw thread
It is closely joined together, lower interface (i.e. delivery port) is similarly linked together with the mode and drainage lid of screw thread.In drainage lid
Screw thread is put, circle is shaped as, is connected with drainage port, the drainage switch of Experimental Flowing Object in cylindrical container (is started so as to realize
During drainage, only drainage lid need to be opened).
3. fluid overflow module is made up of spout hole and rubber hose, as shown in Figure 1.Spout hole holds in fluid containment
On wall face, when waterline is reached herein, Experimental Flowing Object will flow out from spout hole, prevent that fluid is excessive and holds from dual cylinders
Device mouthful overflows.Rubber hose is fixed on overflow aperture with glued mode, as the pipeline that fluid is flowed out from spout hole, will overflow
Fluid conduction is into bath container.
This subsystem complements each other with mechanical subsystem.In double cylinder combination containers and bath container in mechanical subsystem
Experimental Flowing Object is all contained, in non-detection status, due to the presence of drainage lid, two-part fluid is static without circulation.Fluid
Drainage enters the detection-phase that this stage of bath container is the system from double cylinder combination containers, as long as opening drainage lid with regard to energy
Open this stage.When one-time detection terminates to be tested again, fluid circulation module is started working, and water pump holds bath
Fluid in device is drained back into double cylinder combination containers again by rubber hose, realizes the function of circulation experiment.
Vibration analysis subsystem involved in the present invention, the thin of fluid impact formation is gathered by vibration analysis system in real time
Shell wall surface vibration signal, realizes the functions such as collection, conversion, processing, display, the storage of fluid impact wall coupled vibrations data.
Vibration analysis system includes signal acquisition module, A/D modular converters and data processing module, and particular technique details is as follows：
1. signal acquisition module by built-in integrated circuit (ICP) vibrating sensor, sensor base, constant current adapter and
Two-core cable is constituted.ICP vibrating sensors are acceleration formula sensor, in order to be able to collect shaking of being produced in PET material cylinder
Dynamic signal, it is 200mV/g that this example, which chooses voltage sensibility, and range vibrates driver for 25g ICP.Sensor screw thread
The base that mode is matched with it is closely joined together, and gathers the vibration signal for being produced by wall and being transmitted by base.Pressure
Electric transducer has very high impedance, and what it was produced is faint charge signal, the high input impedance built in described ICP sensors
Amplifying circuit by signal carry out gain amplification, and built-in voltage follower the high impedance output signal of sensor is converted to it is low
Impedance signal.Base is installed on shell wall of a container face with the mode of bonding, and it can pass to Wall Vibration sensor, and
ICP vibrating sensors can be protected in order to avoid causing the damage of sensor.Due to there are some noise sources inside circuit, and examine
The vibratory impulse power of survey process is small, and signal is weaker, in order that small-signal is not flooded by circuit noise, it is necessary in circuit front-end plus
Enter amplifier circuit, the signal that gain is collected.And amplifying circuit must be low noise, i.e., the amplifier in itself etc.
Imitating input noise must be lower than the equivalent input noise of following stage circuit.ICP vibrating sensors that the present invention is used it is built-in this
Class amplification circuit, but need to sensor constant current-supplying.Constant current adapter as ICP vibrating sensors and A/D modular converters it
Between bridge, only ICP sensors do not provide stable power supply, and built-in high-pass filter and low pass filter, upper limit frequency
Rate is 100KHz, and lower frequency limit is 0.3Hz.There can be some interference signals in signals transmission, signal need to be filtered
Processing.The circuit noise that wave filter is produced is than larger, if be placed on behind amplifier, the noise of wave filter will be exaggerated device and put
Greatly, the reduction of circuit output signal to noise ratio is made.Made an uproar so wave filter to be put in the equivalent inpnt for being conducive to reducing circuit after amplifier
Sound, has been filtered after an amplifier herein.The signal received is filtered processing by constant current adapter, finally transmits signal
Give A/D modular converters.Two-core cable as the connection bridge between ICP sensors and constant current adapter, play signal transmission with
And the function of electrical transfer.
2. A/D modular converters are made up of data collecting card.The simulation input range of data collecting card is ± 10V herein, is gathered around
There are 12 bit resolutions, 100kS/s sample rate meets the requirement of experiment.Data collecting card is responsible for receiving the conditioning of constant current adapter
Later signal, is then handled signal, and signal finally is converted into data signal by analog signal is sent to data
Manage module.Realize the A/D translation functions to signal.
3. data processing module is run in Industrial PC Computer, the function such as integrated data collection, display and record.This module connects
The signal message after being handled through data collecting card is received, then realizes and time domain, the function of frequency-domain analysis is carried out to its signal.
The execution flow of vibration analysis subsystem：Thin-walled vibration signal passes to vibrating sensor, in-built electrical by base
The sensor on road is transferred to constant current adapter after signal is amplified.Signal is filtered processing by constant current adapter, finally will letter
Number it is transferred to data collecting card.Signal is converted into digital data transmission by analog signal and carried out finally to PC ends by data collecting card
Processing.PC ends carry out the analysis such as time domain, frequency domain to signal, reach the final purpose of detection.
The job control flow of the present invention is as shown in Figure 2.Control signal is sent out by PC ends and gives driving stepper motor plate, is connect
Motor driving plate by Driving Stepping Motor, drives T-shaped stirring vane to rotate by shaft coupling.When stirring vane is rotated, circle
Fluid inside column container will produce certain initial disturbance.As long as now opening inside drainage lid, cylindrical container
Fluid will drainage come out, slowly form conflux vortex.At the same time, ICP vibrating sensors will gather vibration signal in real time,
And PC ends are delivered to by data collecting card progress signal conversion.PC ends can carry out the analysis of temporal frequency to signal, reach
Experiment purpose completes one and takes turns experimentation.Such as to be tested, plastic faucet and water pump need to only be opened, by fluid next time
Beam is returned in cylindrical container.The specific implementation step of control method can be described as follows：
1. system starts, and carries out initiation parameter setting, and set parameter includes local time, disturbance rank, dammed
Device opening, sample frequency, sampling number, storage file size and repetition detection number of times.
2. Industrial PC Computer sends driving instruction to motor drive module, motor drive module Driving Stepping Motor, stepping electricity
Machine drives T-shaped stirring vane, produces flow field initial disturbance.
3. whether flow field initial disturbance reaches set disturbance level thresholdIf reaching, motor shuts down, and opens
Drainage lid；If not up to, motor remains in operation, until reaching disturbance level threshold.
4. signal acquisition module gathers shell chamber wall face solid liquid interation signal sequence by vibrating sensor, carries out
After A/D conversions, data processing module is sent to.
5. data processing module carries out time domain, frequency domain processing, and root by multithreading respectively to Discrete signal
According to current user task demand, real-time data curve is shown by dialog box.
6. whether user needs to store current demand signal sequenceIf desired, then the number that 3 samplings are counted before and after current point in time
According to buffering area will be stored into, and according to storage file size, it is divided into corresponding data file, and local time+sequence number
Form name.
7. detection number of times whether is reachedIf reaching, stop detection；If not up to, being retracted into the and 2. walking, re-start
Detection, until reaching experiment number.
Finally, in addition it is also necessary to it is noted that listed above is only a specific embodiment of the invention.Obviously, it is of the invention
Above example is not limited to, there can also be many deformations.One of ordinary skill in the art can be straight from present disclosure
Export or all deformations associated are connect, protection scope of the present invention is considered as.
Claims (10)
1. a kind of shell solid liquid interation detecting system, it is characterised in that：The shell solid liquid interation detecting system is real
Existing solid liquid interation signal detection of the shell under fluid impact, by machine power subsystem, fluid control subsystem with shaking
Dynamic detection and analysis subsystem composition；
The machine power subsystem is used for the support frame of device physical entity and the receiving of fluid, and driving disturbance is performed
Mechanism makes fluid produce certain initial disturbance, and then produces fluid impact；The machine power subsystem includes solid support
Module, fluid container module and initial disturbance module；
The fluid control subsystem is for realizing the conveying of the fluid in shell solid liquid interation detection process, circulation, flow
Control and overflow control, the fluid control subsystem include fluid circulation module, flow-control module and fluid overflow module；
The vibration detection analyzing subsystem be used to realizing the collection of the shell solid liquid interation data under the conditions of fluid impact,
Conversion and processing, the vibration detection analyzing subsystem include signal acquisition module, A/D modular converters and data processing module.
2. shell solid liquid interation detecting system as claimed in claim 1, it is characterised in that：The solid support module by
4040 aluminium alloy extrusions are built with the corner fittings matched；4040 aluminium alloy extrusions is support frame, each other by corner fittings
It is connected and forms, be securedly mounted to by T-bolt, flange nut on corresponding corner fittings, is realized to each function of experiment porch
The fixation and connection of module.
3. shell solid liquid interation detecting system as claimed in claim 1, it is characterised in that：The fluid container module by
Double cylinder combination containers, drain tube, bath container composition；Described double cylinder combination containers made by transparent PET material and
Into being fixed on by bonding connected mode in solid support module；Double cylinder combination containers include fluid bearing receptacle and shell
Container, fluid bearing receptacle produces the fluid of motion to accommodate, and surface indicates volume scale, in order to observe fluid in container
Volume situation of change；Shell container is connected by bonding way with fluid bearing receptacle；Shell container passes through pipe screw thread and row
Flow tube is connected；Drain tube one end is connected with shell container, and the other end is stretched into bath container；Described bath container polyvinyl chloride
Hard material is made, positioned at the underface of drainage port, is mainly used to receive the fluid discharged from shell container.
4. shell solid liquid interation detecting system as claimed in claim 1, it is characterised in that：The initial disturbance module bag
Containing Industrial PC Computer, motor drive module, stepper motor, yielding coupling and disturbance executing agency；Described Industrial PC Computer to
User provides guidance panel interface, and Pulse Width Control information is sent to motor drive module, realizes to stepper motor rotating speed and operation
The control of duration；Described motor drive module main body is pulse-duration modulation signal generator, receives the control sent by Industrial PC Computer
System instruction, then according to experimental configuration parameter, by controlling the number of pulse to control angular displacement；Motor drive module passes through
Control pulse frequency carrys out the speed and acceleration of controlled motor rotation, so as to reach the speed governing and positioning to disturbing executing agency；
Power, by yielding coupling, is transferred to disturbance executing agency by described stepper motor under the control of motor drive module；
Described disturbance executing agency is T-shaped stirring vane, under the driving of stepper motor, produces the fluid in receiving container initial
Flow field is disturbed.
5. the shell solid liquid interation detecting system as described in one of Claims 1 to 4, it is characterised in that：The fluid is followed
Ring module includes small-power water pump, rubber hose and plastic faucet, and described small-power water pump is positioned over bath container bottom,
And fluid re-circulation is discharged into double cylinder combination containers by rubber hose, realize recycling for fluid；Described rubber
Glue flexible pipe is fixed in solid support module with the mode of binding, for connecting small-power water pump and plastic faucet, is used as stream
The transport pipeline of body；Described plastic faucet be installed on accommodate container top, for control circulating water flow switch and
Flow.
6. the shell solid liquid interation detecting system as described in one of Claims 1 to 4, it is characterised in that：The flow control
Molding block is made up of multistage cut-off equipment and drainage lid；Described multistage cut-off equipment is formed by PLA material 3D printing, for reality
The flow Accurate Classification regulation and control of existing fluid discharge process；The upper interface of multistage cut-off equipment is circle, with the mode of pipe screw thread with
Shell container lower end is connected；The lower interface of multistage cut-off equipment is connected by pipe screw thread with drainage lid, and drainage lid realizes drainage port
Closing.
7. the shell solid liquid interation detecting system as described in one of Claims 1 to 4, it is characterised in that：Described fluid
Overflow module is made up of spout hole and rubber hose；Described spout hole is located on fluid bearing receptacle wall, when waterline is arrived
Up to herein when, fluid will flow out from spout hole；Described rubber hose is fixed on overflow aperture with bonding way, as from overflow
The pipeline of fluid is flowed out in hole, will overflow fluid and is drained in bath container.
8. the shell solid liquid interation detecting system as described in one of Claims 1 to 4, it is characterised in that：The signal is adopted
Collecting module includes built-in integrated circuit vibrating sensor, sensor base, constant current adapter and two-core cable, described built-in collection
It is piezoelectricity induction type, the solid liquid interation letter that collection shell chamber wall face is produced by fluid impact into circuit vibrating sensor
Number；The lower end of built-in integrated circuit vibrating sensor is connected by screw threads for fastening mode with sensor base, to protect biography
Sensor induced inside device and integrated circuit；Sensor base is connected by bonding way with shell container wall, and is ensured
Certain contact stiffness, enables vibration signal to be successfully transferred to vibrating sensor from shell container wall；Described constant current
The input of adapter is connected by two-core cable with the upper end of built-in integrated circuit vibrating sensor, to vibrating sensor because of it
High impedance and the faint charge signal that produces carries out gain amplification, and it is defeated by the high impedance of sensor to combine built-in voltage follower
Go out signal and be converted to Low ESR output signal；The output end of described constant current adapter passes through two-core cable and A/D modular converters
It is connected, A/D moduluss of conversion complete the analog/digital conversion of vibration signal, and are locked vibration signal frequency by built-in bandpass filter
It is scheduled between 0.3~100kHz, is then uploaded to data processing module；Described two-core cable is connection vibrating sensor, perseverance
The multiplexed cable of flow adapter and A/D modular converters, realizes signal transmission and function of supplying power.
9. the shell solid liquid interation detecting system as described in one of Claims 1 to 4, it is characterised in that：Described data
Processing module receives the vibration signal discrete data of A/D modular converters, realize the time domain of vibration signal, frequency-domain calculations, display and
Store function on demand.
10. a kind of control method of shell solid liquid interation detecting system as claimed in claim 1, it is characterised in that：Institute
Control method is stated to comprise the following steps：
1. system starts, and carries out initiation parameter setting, and set parameter includes local time, disturbance rank, cut-off equipment
Opening, sample frequency, sampling number, storage file size and repetition detection number of times；
2. Industrial PC Computer sends driving instruction to motor drive module, motor drive module Driving Stepping Motor, stepper motor band
T-shaped stirring vane is moved, flow field initial disturbance is produced；
3. whether flow field initial disturbance reaches set disturbance level thresholdIf reaching, motor shuts down, and opens drainage
Lid；If not up to, motor remains in operation, until reaching disturbance level threshold；
4. signal acquisition module gathers shell chamber wall face solid liquid interation signal sequence by vibrating sensor, carries out A/D
After conversion, data processing module is sent to；
5. data processing module Discrete signal is carried out respectively by multithreading time domain, frequency domain processing, and according to work as
Preceding user task demand, real-time data curve is shown by dialog box；
6. whether user needs to store current demand signal sequenceIf desired, then the data that 3 samplings are counted before and after current point in time will
Buffering area is stored into, and according to storage file size, is divided into corresponding data file, and the shape of local time+sequence number
Formula is named；
7. detection number of times whether is reachedIf reaching, stop detection；If not up to, being retracted into the and 2. walking, re-start inspection
Survey, until reaching experiment number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710403030.0A CN107167229B (en) | 2017-06-01 | 2017-06-01 | A kind of shell solid liquid interation detection system and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710403030.0A CN107167229B (en) | 2017-06-01 | 2017-06-01 | A kind of shell solid liquid interation detection system and its control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107167229A true CN107167229A (en) | 2017-09-15 |
| CN107167229B CN107167229B (en) | 2019-05-31 |
Family
ID=59821182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710403030.0A Active CN107167229B (en) | 2017-06-01 | 2017-06-01 | A kind of shell solid liquid interation detection system and its control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107167229B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112964439A (en) * | 2021-02-04 | 2021-06-15 | 季华实验室 | Terminal jitter simulation detection system and method and detection system of jitter suppression function |
| CN113280909A (en) * | 2021-04-08 | 2021-08-20 | 上海大学 | Coal preparation plant vibrating screen intelligent detection system and method based on vibration signal analysis |
| CN114174779A (en) * | 2019-08-07 | 2022-03-11 | 苏尔寿管理有限公司 | Sensing arrangement for a closed container and method for transmitting data through a container wall |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0775307B1 (en) * | 1994-07-19 | 1999-02-10 | APA Systems | Method and apparatus for detecting the condition of the flow of liquid metal in and from a teeming vessel |
| US6539805B2 (en) * | 1994-07-19 | 2003-04-01 | Vesuvius Crucible Company | Liquid metal flow condition detection |
| CN101791787A (en) * | 2010-03-11 | 2010-08-04 | 浙江工业大学 | Automatic stirring system for soft abrasive particle fluids |
| CN101949767A (en) * | 2010-09-13 | 2011-01-19 | 浙江工业大学 | Ladle slag detecting water model experimental platform |
| CN102620807A (en) * | 2012-03-22 | 2012-08-01 | 内蒙古科技大学 | System and method for monitoring state of wind generator |
| CN105890870A (en) * | 2016-03-31 | 2016-08-24 | 浙江工业大学 | Conflux vortex suction formation mechanism observation and experiment platform |
-
2017
- 2017-06-01 CN CN201710403030.0A patent/CN107167229B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0775307B1 (en) * | 1994-07-19 | 1999-02-10 | APA Systems | Method and apparatus for detecting the condition of the flow of liquid metal in and from a teeming vessel |
| US6539805B2 (en) * | 1994-07-19 | 2003-04-01 | Vesuvius Crucible Company | Liquid metal flow condition detection |
| CN101791787A (en) * | 2010-03-11 | 2010-08-04 | 浙江工业大学 | Automatic stirring system for soft abrasive particle fluids |
| CN101949767A (en) * | 2010-09-13 | 2011-01-19 | 浙江工业大学 | Ladle slag detecting water model experimental platform |
| CN102620807A (en) * | 2012-03-22 | 2012-08-01 | 内蒙古科技大学 | System and method for monitoring state of wind generator |
| CN105890870A (en) * | 2016-03-31 | 2016-08-24 | 浙江工业大学 | Conflux vortex suction formation mechanism observation and experiment platform |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114174779A (en) * | 2019-08-07 | 2022-03-11 | 苏尔寿管理有限公司 | Sensing arrangement for a closed container and method for transmitting data through a container wall |
| CN112964439A (en) * | 2021-02-04 | 2021-06-15 | 季华实验室 | Terminal jitter simulation detection system and method and detection system of jitter suppression function |
| CN113280909A (en) * | 2021-04-08 | 2021-08-20 | 上海大学 | Coal preparation plant vibrating screen intelligent detection system and method based on vibration signal analysis |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107167229B (en) | 2019-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107167229B (en) | A kind of shell solid liquid interation detection system and its control method | |
| CN107843408B (en) | Water jet self-vibration nozzle performance detection device and method based on pipeline fluid signals | |
| CN207516082U (en) | A kind of river bottom mud sampler | |
| CN105223343A (en) | A kind of vibration transducer detecting prefabricated concrete structure reinforced bar sleeve grouting plumpness | |
| CN205103251U (en) | Detect detector of prefabricated concrete structure reinforcing bar sleeve grout plumpness | |
| CN105890870A (en) | Conflux vortex suction formation mechanism observation and experiment platform | |
| CN104749077A (en) | Suspension particle concentration detection system based on ultrasonic waves | |
| CN205580557U (en) | Automatic pumping test device of well | |
| CN101982750A (en) | Control method and device thereof for vibration frequency of coil spring type sampler | |
| CN204255669U (en) | Portable type excavator Performance Test System | |
| CN207181394U (en) | A kind of modularization water quality on-line monitoring system | |
| CN103256040A (en) | Implantable thickened oil well shakeout monitoring device | |
| CN105547925B (en) | A kind of slip consistency detector and detection method | |
| CN202649807U (en) | Vibroflotation construction remote monitoring and recording system | |
| CN106596046A (en) | Stress observation device for ocean structure under internal solitary wave environment | |
| CN102587092A (en) | Digital water level control device and water control method for washing machine | |
| CN102866238B (en) | A kind of bed mud of studying works the device and method of operating thereof that hang machine-processed and Nutrient release | |
| CN205665424U (en) | Wireless real -time hyetometer of supersound | |
| CN108693091A (en) | A kind of sludge concentration monitoring system based on cloud platform | |
| CN205103252U (en) | Detect vibration sensor of prefabricated concrete structure reinforcing bar sleeve grout plumpness | |
| CN201592000U (en) | Ultrasonic Chinese traditional medicine extracting tank | |
| CN204383750U (en) | The control system of the unmanned spraying machine of a kind of refuse landfill | |
| CN208109502U (en) | A kind of environmental monitoring water sampler | |
| CN202929001U (en) | Constant-efficiency degasser | |
| CN204746229U (en) | Shaking out ultrasonic instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |