CN106840582A - A kind of impulse wind tunnel operation control system and impulse wind tunnel progress control method - Google Patents
A kind of impulse wind tunnel operation control system and impulse wind tunnel progress control method Download PDFInfo
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The present invention relates to a kind of impulse wind tunnel operation control system and impulse wind tunnel progress control method, system include PLC module, drive section charging valve, drive section deflation valve, drive section pressure sensor, 1/2 valve, double films section deflation valve, double films section pressure sensor, valve of being deflated by drive section charging valve, by drive section, by drive section pressure measuring module, by drive section vacuum-pumping valve, test section deflation valve, test section vacuum-pumping valve, test section pressure sensor, vacuum pump set；Automatically controlling for wind tunnel test process is realized by PLC module, using distributed control mode, all operations are completed between observing and controlling, it is not necessary to carried out operation into scene, isolated high-pressure air source, it is ensured that personnel's operation safety.
Description
Technical field
The present invention relates to a kind of impulse wind tunnel operation control system and impulse wind tunnel progress control method, belong to hypersonic
The gas circuit operation control of impulse wind tunnel system and status monitoring field.
Background technology
Impulse type wind-tunnel refers to the wind-tunnel that pulse testing air-flow is produced in very short time (a few tens of milliseconds was to 1 second)
(《GJB4296 wind tunnel tests term and symbol》).Impulse wind tunnel is main by drive section, double films section, by drive section, single clip film, spray
The part such as pipe and test section is constituted.Experimentation major demands parameter is Mach number, Reynolds number, stagnation temperature, stagnation pressure.Mach number passes through
Change jet pipe to realize, be pressure ratio before and after guarantee jet pipe, experimentation needs for test section to be evacuated to low-pressure state；Reynolds number passes through quilt
Drive section gas pressure, the control of drive section gas pressure；Stagnation temperature, stagnation pressure are by driving gas Stress control；It is control driving gas
Body Rupture of Membrane pressure, there is provided double diaphragm sandwiched film mechanisms, to form gradient pressure, treat that high-pressure gas pressure reaches predetermined Rupture of Membrane pressure
When rapid release sandwiched film mechanism internal pressure, make rupture of diaphragm.
Common source of the gas trend and factory building layout are as shown in Figure 1.The most of control work of wind tunnel experiment is by experimenter's craft
Operation is completed, and whole high-pressure air sources are both needed to be incorporated into control room and carry out manual control, and whole source of the gas circuit is long, pressure is high, easily go out
Failure, be unfavorable for safeguard, there is great potential safety hazard.Secondly, conventional control mode uses manually operated valve, visually observes
The process of recording status information, operation controls poor repeatability and data record has deviation.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided a kind of impulse wind tunnel operation control system and pulse
Wind tunnel operation control method, realizes the automatic operating of wind tunnel test.
The object of the invention is achieved by following technical solution：
A kind of impulse wind tunnel operation control system, including PLC module, drive section charging valve, drive section vent valve are provided
Door, drive section pressure sensor, 1/2 valve, double films section deflation valve, double films section pressure sensor, by drive section charging valve,
By drive section deflate valve, by drive section pressure measuring module, by drive section vacuum-pumping valve, test section deflation valve, experiment
Section vacuum-pumping valve, test section pressure sensor, vacuum pump set；
The drive section charging valve is used to be controlled under the control of PLC module the inflation of drive section, and the drive section is put
Air valve is used to be controlled under the control of PLC module the deflation of drive section, and the drive section pressure sensor is used to detect driving
The pressure P1 of section, and it is sent to PLC module；
1/2 valve controls the inflation of double film sections under the control of PLC module, and double film section deflation valves are used in PLC
The deflation of double film sections is controlled under the control of module, described pair of film section pressure sensor is used to measure the pressure P2 of double film sections, concurrently
Give PLC module；
Controlled to be inflated by drive section under the control of PLC module by drive section charging valve, existed by drive section deflation valve
Control to be deflated by drive section under the control of PLC module, controlled to be driven under the control of PLC module by drive section vacuum-pumping valve
Section is connected with vacuum pump set, is measured under the control of PLC module by the pressure P3 of drive section by drive section pressure measuring module；
The deflation of test section deflation valve Control experiment section under the control of PLC module, test section vacuum-pumping valve is in PLC
Control experiment section is connected with vacuum pump set under the control of module, and test section pressure sensor measures examination under the control of PLC module
Test the pressure P4 of section；
What vacuum pump set was connected under the control of PLC module for it is vacuumized by drive section or test section；
PLC module controls the drive section charging valve to open for drive section is inflated, and receives the drive section pressure sensing
Device is used for the pressure P1 for detecting；It is double film section inflations that PLC module controls 1/2 valve opening, receives described pair of film section pressure
Sensor is used for the pressure P2 for detecting, when the difference of P1-P2 is more than the half of drive section pressure set points, controls the driving
Section charging valve is closed, until when the difference of P1-P2 is less than or equal to the half of P1 setting values, reopening drive section charge valve
Door；
As bleed pressure Psource>During 15MPa, control drive section charging valve is closed when P1 reaches α times of setting value,
Stop inflation, 0.95<α<0.97, as bleed pressure 10MPa<Psource<During 15MPa, P1 is controlled when reaching β times of setting value
Drive section charging valve is closed, and stops inflation, 0.97<β<0.99, as bleed pressure Psource<During 10MPa, pressure is opened in control
Contracting machine is inflated for source of the gas；Drive section inflation stop after, wait drive section gas pressure balancing after, judge detect pressure P1 whether
Meet the requirements, think to meet if the difference between the pressure P1 and setting value of detection is more than setting value less than 1% or P1
It is required that, inflation is completed, if undesirable, open drive section charging valve and drive section charging valve is closed after N seconds, until
The pressure P1 of detection meets the requirements；
PLC module control is opened by drive section vacuum-pumping valve, and control vacuum pump set receives institute to being vacuumized by drive section
The pressure P3 for being used for detection by drive section pressure sensor is stated, when the pressure P3 of detection reaches setup pressure value, PLC module control
Vacuum-pumping valve processed is closed, and it is to be inflated by drive section to control described unlatching by drive section charging valve；As bleed pressure Psource
>During 10MPa, control drive section charging valve is closed when P3 reaches 1 times of the α of setting value, stops inflation, 0.97<α1<0.99；When
Bleed pressure Psource<During 10MPa, control to open compressor for source of the gas is inflated；After drive section inflation stops, drive section is waited
After gas pressure balancing, judge whether the pressure P3 of detection meets the requirements, if the difference between the pressure P3 and setting value of detection
Value then thinks to meet the requirements less than 1% or P3 more than setting value, and inflation is completed, if undesirable, opens drive section
Drive section charging valve is closed after charging valve N seconds, until the pressure P3 of detection meets the requirements；
PLC module Control experiment section vacuum-pumping valve is opened, and control vacuum pump set is vacuumized to test section, and PLC module connects
Acceptance test section pressure sensor sends the pressure P4 of test section, when the pressure P4 of test section reaches setup pressure value, PLC module
Control experiment section vacuum-pumping valve is closed；
After PLC module detection P1, P2, P3, P4 are satisfied by requiring, all valves are closed；
When on-test, the double film section deflation valve openings of PLC module control, the gas of drive section breaks through the film of double film sections
Piece enters by drive section, then breaks through single-iris and enter test section；Drive section deflation valve is opened after the time of specifying, is put by drive section
Air valve and test section deflation valve, complete experiment.
Preferably, high-pressure measurement pipeline, low pressure measurement pipeline, first are included by drive section pressure measuring module
Valve, the second valve, high pressure sensor, low pressure sensor and vacuum transducer；The first Valve controlling high-pressure measurement
Pipeline is connected with by drive section, and the second Valve controlling low pressure measurement pipeline measures pipeline connection with high-pressure, high
Pressure P31 in pressure sensor measurement high-pressure measurement pipeline, low pressure sensor and vacuum transducer measurement low pressure are surveyed
Pressure in buret road, pressure measuring value is respectively P32 and P33；
After PLC module control is opened by drive section vacuum-pumping valve, the first valve opening is controlled, high pressure sensor measurement is high
Pressure P31 in pressure pressure measurement pipeline, and PLC module is sent to, PLC module is using P31 as by the pressure P3 of drive section；
When pressure P31 is less than in the range upper limit equal to low pressure sensor, the second valve, low pressure sensor are opened in PLC module control
Pressure P32 in measurement low pressure measurement pipeline, and PLC module is sent to, PLC module is using P32 as by drive section
Pressure P3；When the range upper limits of the pressure P32 less than or equal to vacuum transducer, vacuum transducer measurement low pressure measurement is opened
Pressure P33 in pipeline, and PLC module is sent to, PLC module is using P33 as by the pressure P3 of drive section；When pressure P3 reaches
During to setup pressure value, PLC module control vacuum-pumping valve and the second valve closing, PLC module is using P31 as by drive section
Pressure P3.
Preferably, the PLC module includes a PLC, the 2nd PLC and the 3rd PLC；First PLC receives the 3rd PLC
Control instruction, control drive section charging valve, drive section deflation valve, 1/2 valve, double films section deflation valve, by drive section
Charging valve, valve of being deflated by drive section, the first valve, the second valve, the opening and closing of test section deflation valve, receive and drive
The pressure data that dynamic section pressure sensor, double films section pressure sensor, test section pressure sensor send, and it is sent to the 3rd
PLC；2nd PLC receives the control instruction of the 3rd PLC, control by drive section vacuum-pumping valve, test section vacuum-pumping valve,
The opening and closing of vacuum pump set, and the timing of vacuum pump set running state parameter is sent to the 3rd PLC；3rd PLC connects
The outside test parameters instruction for sending of receipts, experiment preparation instruction, on-test, instruct and are sent to a PLC, will control to be driven
Dynamic section vacuum-pumping valve, test section vacuum-pumping valve, the opening and closing instruction of vacuum pump set are sent to the 2nd PLC.
Preferably, when it is higher than by drive section low pressure sensor range to set the blowing pressure, PLC module is controlled by drive section
When charging valve is opened, by drive section vacuum-pumping valve and the second valve closing and locked, it is impossible to manually opened.
Preferably, when pressure P1 reaches 0.8 times of setting value in test section gas replenishment process, PLC module control is vacuumized
Valve and the second valve closing are simultaneously locked, it is impossible to manually opened.
Preferably, when low pressure sensor and vacuum transducer measured pressure value exceed itself range, PLC module sends alarm
Signal.
A kind of control method using the impulse wind tunnel operation control system is provided simultaneously, is comprised the following steps：
(1) PLC module control is vacuumized to test section, until setup pressure value；
(2) in (1) vacuum, PLC module control by drive section to carrying out pressure regulation, until reaching setting pressure
Force value；
(3) after the completion of (1) (2) step, PLC module control is to drive section and the section inflation of double films, until drive section and double
Film section pressure reaches setup pressure value；
(4) whether PLC module judges be satisfied by requiring by the pressure of drive section, test section, drive section and double films section, if
Meet and require to close all valves, start experiment, if being unsatisfactory for requiring, timing 15 minutes, wait 15 are started since step (3)
Still backlog demand after minute, applies for manual intervention；
(5) PLC module opens double film section vent valves, self-driven section of test air-flow, double films section, is flowed to by drive section and tested
Section, is tested, off-test after double film section rupture 1s；All vent valves are opened in PLC controls.
The present invention has the following advantages that compared with prior art：
(1) present invention uses distributed control mode, and all operations are completed between observing and controlling, it is not necessary to made into scene
Industry, has isolated high-pressure air source, it is ensured that personnel's operation safety.
(2) present invention carries out data acquiring and recording using PLC, can realize display and the accurate recording of control parameter, carries
The high confidence level and the repeatability of running status of service data.
(3) present invention carries out inflation/deflation operation using PLC, by setting value and real time contrast's mode of desired value, for
Different the blowing pressures take Different Strategies, improve the inflation degree of accuracy, and reduce the personnel to operate intensity.
(4) for by the pressure range larger part such as drive section, taking vacuum meter, low pressure sensor and high pressure to sense
The mode that device is combined, fragmet auto-switch display currency, improves data collection and control precision.
Brief description of the drawings
Fig. 1 is common wind-tunnel gas circuit and operation logic figure；
Fig. 2 is segmented pressure instrumentation plan；
Fig. 3 is impulse wind tunnel operation logic figure；
Fig. 4 is wind tunnel operation control system theory diagram；
Fig. 5 is experiment process figure of the present invention.
Specific embodiment
Impulse wind tunnel operation control system of the invention includes PLC module, drive section charging valve, drive section vent valve
Door, drive section pressure sensor, 1/2 valve, double films section deflation valve, double films section pressure sensor, by drive section charging valve,
By drive section deflate valve, by drive section pressure measuring module, by drive section vacuum-pumping valve, test section deflation valve, experiment
Section vacuum-pumping valve, test section pressure sensor, vacuum pump set.Implement function such as：
1st, segmented pressure measurement and data record
By drive section connection high-pressure measurement pipeline, measurement gas path on-off, the high pressure after valve 1 are controlled by valve 1
Low pressure measurement pipeline is connected on pressure measxurement pipeline, low pressure measurement pipe drive test amount gas path on-off is controlled by valve 2.
As shown in Fig. 2 needing pressure to be possible to hundreds of kPas from tens handkerchiefs depending on experiment by drive section.If using solid
Determine range sensorses, will certainly there is the not enough situation of certainty of measurement.The present invention is applied in combination using three kinds of sensors, and high pressure is passed
Sensor P31 (0~2MPa), low pressure sensor P32 (0~150KPa), (0~3KPa, resistance to compression is more than vacuum transducer P33
150KPa) measure by the pressure P3 of drive section, therefore, in order to improve test measurement precision, devise using three kinds of sensors point
The form of section measurement.When to being evacuated or during charge operation by drive section, first Open valve 1, by by the gas of drive section
It is incorporated into, opens high pressure sensor P31 and begin with reading, then judges according to following rules.
Work as P31 in pumping process>During Pset1, represent that current pressure values are higher, current pressure values use high pressure sensor
P31 is measured, and is P3=P31；Pset1 is set to the range upper limit of low pressure sensor, for example, could be arranged to 150KMpa.
Work as P31<During Pset1, it is smaller to represent current pressure values, Open valve 2, by judging that P32 obtains current pressure values；
Work as P32>During Pset2, current pressure values are P3=P32, and otherwise current pressure values are P3=P33；Pset2 is set to
The range upper limit of vacuum transducer, for example, could be arranged to 3KPa.
Valve 2 is closed in gas replenishment process, using high pressure sensor P31 measurements by the pressure P3 of drive section.
By PLC controls, storage is pressure P3 to the break-make of above-mentioned judgement and valve with show value.
All data acquisitions are carried out according to 20Hz sample rates, when on-test, by drive section near single clip film location
Total-pressure probe has unexpected pressure and rises, now as flash test state, records now each sampled point pressure value conduct
Test parameters participates in follow-up data and calculates.Trystate can relatively accurately be recorded using this kind of samples storage mode, it is to avoid
The error that artificial sensing tape comes.
2nd, automatic pressure regulation
From the figure 3, it may be seen that wind tunnel operation process main control parameters are drive section gas pressure P1, double film intersegmental part pressure
P2, by driving gas pressure P3, test section pressure P4.Wind tunnel operation control system is to realize above-mentioned parameter adjustment and each portion
What isloation state was controlled and designed.
(1) drive section gas pressure P1 regulations：
The regulation of drive section gas pressure is main to be completed by switch drive section charge valve.Because pipeline bore is limited and is filled
Gas process pressure sensor reaction speed is limited, if charge valve is controlled only with direct threshold value setting method be easily caused
Pressure overshoot phenomenon.If overshoot is larger, declined by vent valve pressure whard to control.Therefore it is required that gas replenishment process is controllable.Root
According to bleed pressure Psource and by the relation between drive section volume, inflation rule is summarized as follows：
Work as Psource>During 15MPa, P1 stops inflation (0.95 when reaching α times of setting value<α<0.97)；
Work as Psource<15MPa and Psource>During 10MPa, P1 stops inflation (0.97 when reaching β times of setting value<β<
0.99)；
Work as Psource<During 10MPa, assert that air pressure is not enough, it is necessary to open compressor inflation.
After aeration phase stops, after drive section gas pressure balancing (about 30s), the difference between contrast P1 and setting value is small
Then assert that inflation is completed more than setting value in 1% or P1.Otherwise opening point mold filling formula, that is, close to enter again after opening charge valve 2s
Row judges until inflation terminates.
(2) double film section gas pressure P2 regulations：
Directly drive section gas is taken in double film sections by 1/2 valve to be inflated, finally obtain P2=1/2P1, its pressurising speed
Cannot directly be adjusted by 1/2 valve.If too fast by drive section inflation rate, and 1/2 valve inflation rate cannot meet condition
Cause pressure difference between P1 and P2 larger, easily cause double film section diaphragms to rupture in advance, cause test failure, and easily cause vacuum
Unit is damaged with low pressure sensor.
Therefore, setting segmentation airing form is taken, when the two pressure difference is more than setting value Perror (taking 1/2P1 setting values)
Drive section charge valve is closed, stops inflation, treat the two P1:P2 pressure ratios are close to 2:Restart inflation when 1.For example：Setting P1
10MPa is inflated to, then (P1-P2)>During 5MPa, the drive section charging valve is controlled to close, until during (P1-P2)≤5MPa,
Reopen drive section charging valve.
(3) adjusted by drive section gas pressure P3：
It is adjusted by charge valve, vavuum pump two ways by the regulation of drive section gas pressure.When setup pressure value is small
It is evacuated, it is necessary to open vavuum pump in an atmospheric pressure or when needing and changing by gas condition in drive section.Pumping process
The start and stop of vavuum pump and the switch of vacuum valve is directly controlled to realize.
Gas replenishment process is similar with drive section gas pressure P1 regulations, also takes segmented to inflate.
Work as Psource>During 10MPa, P3 stops inflation (0.97 when reaching 1 times of the α of setting value<α1<0.99)；
Work as Psource<During 10MPa, assert that air pressure is not enough, it is necessary to open compressor inflation.
After drive section inflation stops, after waiting drive section gas pressure balancing, judge whether the pressure P3 of detection conforms to
Ask, think to meet the requirements if the difference between the pressure P3 and setting value of detection is more than setting value less than 1% or P3, fill
Gas is completed, if undesirable, open drive section charging valve and drive section charging valve is closed after N seconds, until detection
Pressure P3 meets the requirements；
(4) test section gas pressure P4 regulations：
When vacuumizing, gas circuit valve and vacuum-pumping valve, vacuumize to test section where turn on sensor, work as pressure
During less than setting value and when continuing more than 10s, complete to vacuumize, close vacuum-pumping valve,；Real-time monitoring current vacuum level is big
In setting value, more than then reopening vacuum-pumping valve vacuumize process.
Control method, comprises the following steps：
(1) PLC module control is vacuumized to test section, until setup pressure value；
(2) in (1) vacuum, PLC module is controlled to carrying out pressure regulation by drive section P3, until reaching setting
Pressure value；
(3) after the completion of (1) (2) step, PLC module control is to drive section and the section inflation of double films, until drive section and double
Film section pressure reaches setup pressure value；
(4) whether PLC module judges be satisfied by requiring by the pressure of drive section, test section, drive section and double films section, if
Meet and require to close all valves, start experiment, if being unsatisfactory for requiring, timing 15 minutes, has waited since the step (3)
Still backlog demand after finishing, ejects Manual test dialog box application manual intervention；
(5) PLC module opens double film section vent valves, self-driven section of test air-flow, double films section, is flowed to by drive section and tested
Section, is tested.Off-test after double film section rupture 1s；All vent valves, off-test are opened in PLC controls.
After P1~P4 sections of pressure is satisfied by requiring, all of valve is closed.
Double film section deflation valves are opened, P2 is declined rapidly, P1 and P2 pressure differences expand rapidly, make rupture of diaphragm, complete real
Test.Duration of test runs 1s, opens all deflation valves after 2s.
Test section needs in process of the test to ensure low-pressure state, by the start and stop and the vacuum valve that directly control vavuum pump
Switch to realize.
As shown in figure 4, using distributed control mode, control system is by a main control computer being arranged between gas control
It is connected with main control PLC by EPA.Main control PLC is capable of achieving locally, remotely control manually with equipment room scene PLC communications
Function, so both remote operation can also be switched to local mode and be controlled at the scene between gas control.System realizes valve
Door operation and vacuum pump operation automation function, and with functions such as real time data monitoring, overpressure protections.Whole control program is carried
The automaticity of source of the gas control high, simultaneity factor has good autgmentability.
High-pressure gas circuit is all moved to the less testing ground of personnel activity, effectively realizes high-pressure air source and personnel's
Isolation.Fed back through operations staff, system run all right reliability is simple and efficient to handle, largely improves wind tunnel operation efficiency.
Simultaneously because operated pneumatic valve is deflated, repeatability preferably, compared with artificial operation, effectively improves wind tunnel operation precision.
System's operating mode is divided into two kinds of remote monitoring and local operation, and the two is cut by primary control program between observing and controlling
Change.It is located at three buildings directly over test section between observing and controlling, operating desk and main control computer are located therein.
3rd, remote monitoring
System mainly operates in remote monitoring pattern, i.e. operating personnel by operating desk button between observing and controlling or runs on work
Control interface on control machine operates all parts.
Operate under remote monitoring mode, be arranged at the touch-screen beside wind-tunnel line and be only used for showing current state, it is impossible to
Carry out any operation input.Under remote monitoring pattern, system operation can be made in manually, partly by the selecting switch of operating desk again
Automatically, automatic three kinds of different modes, valve state is constant in each mode handoff procedure.
(1) manual mode
System operation is in remote monitoring mode, operating desk selection manual mode.The all controls of system pass through under this pattern
Operating desk entity button is carried out, and each is switched each button correspondence, is clicked button by operating personnel and is operated, in background program
It is not provided with safety interlocking.
(2) semiautomatic-mode
Under semiautomatic-mode, operated by the entity button on testing stand, but simplify operation button quantity and carry out
Corresponding safety interlocking sets, it is ensured that experiment is smoothed out.
(3) automatic mode
Under automatic mode, after setting operation state (drive section pressure, by drive section pressure), click " beginning " and press
Button, is automatically performed drive section charge operation, and provides prompt message, and personnel to be operated carry out next step operation after confirming, and according to
Experiment process is carried out according to this.For automatic mode, operating personnel can cancel the pattern according to actual conditions in test process, and
Subsequent manual operation can conveniently be carried out.
4th, local operation
After setting local operation in primary control program, primary control program and operating desk button lose operation input function, only
Do status display.System is operated by being arranged on the local touch-screen near double film sections.Touch-screen shows current main pressure
Force parameter, can operate all valve switch and show its current state in real time.
As shown in figure 5, listing all operationss flow once tested.
(1) " on-test " button, setting or confirmation parameter determination test parameters are clicked on.
Set drive section pressure (MPa), 0-1, acquiescence (are limited by drive section pressure (MPa) and rupture of membranes threshold coefficient
0.8).Other specification only shows.
(2) vacuum pump set sends to vacuum pump set and vacuumizes instruction according to set device state；
" starting to vacuumize " ACK button is clicked on, test section vacuum pump system open command is opened vacuum-pumping valve, opened
" vacuum meter valve "
(3) according to test requirements document, it is evacuated by drive section after inflating or vacuumizing and fills test gas；
Two options are ejected by drive section, experiment gas or air is filled.
Experiment gas is filled in selection, open by drive section " vacuum pump valve, open by drive section " pressure measurement main valve ", open and " survey true
Empty valve ", vavuum pump is closed after reaching predetermined vacuum degree.Open " test gas valve " and fill test gas, determined according to setting pressure,
Whether close " survey vacuum valve ".Keep " pressure measurement main valve ".After inflation is finished, close " test gas valve ".
Air is filled in selection, opens " test gas valve " and fills test gas, is determined according to setting pressure, if closes and " surveys true
Empty valve ".Keep " pressure measurement main valve ".After inflation is finished, close " test gas valve ".
(3) drive section is filled with the test gas of specified pressure；
Drive section " charge valve " is opened, and " pressure valve " is closed, and after test pressure is charged to, is closed " charge valve ".
(4) ensure to be closed by the operated pneumatic valve in drive section and drive section before starting experiment；
Automatically check " by drive section vent valve " and whether " drive section vent valve " is closed mode, point out " whether rupture of membranes "
(5) main folder film is deflated, the rupture of diaphragm of main folder film and single clip film.Test gas is formed after jet pipe；
Whether inspection is finished, ejection " rupture of membranes " dialog box, and selection is to open " main folder film vent valve ".
(6) deflated by drive section, vacuum pump set is closed, emptying；
Opening is " by drive section vent valve ", " drive section vent valve ", closing vacuum pump set respective valves, unlatching " test section
Vent valve ".
(7) experiment is finished
Vent valve is kept to open, other valve closings.
5th, experimental report
Experimental report function essential record current operator, experiment the rupture of membranes time and corresponding drive section, double films section and
By drive section rupture of membranes when pressure value.This function measuring point has two decision procedures：One is to press double film section release button moment；
Two is not press button but automatic rupture of membranes moment, is now needed by judging that double film section pressure decline more than setting value X.
Experimental report should be with function be derived automatically from, and specific form is with reference to given reference paper.
All pressure sensors should have demarcates zero point function.
6th, interlock requirement
(1) it is identical with drive section pressure by drive section after rupture of membranes, by calibration device for high range pressure transducer in drive section (0~
When 20MPa) judging pressure more than 1.5MPa, can not be opened by drive section measurement gas circuit valve 1 (prevents after rupture of membranes without abundant
Deflation turns on measurement gas circuit valve, causes sensor degradation).
(2) when being opened by drive section charge valve, can not be opened by valve in drive section vacuum and low pressure measurement gas circuit, it is impossible to
It is manually opened.
(3) test requirements document drive section state is X MPa, when drive section inflation reaches 0.8X MPa, (has now been completed
P3, P4 pressure are adjusted) it is in by drive section measurement gas circuit valve and is closed, vacuumize the closing of branch road pneumatic operated valve.(prevent diaphragm from manufacturing
Error causes prematurely ruptured membrane).
(4) when being outranged by drive section low pressure sensor, closed by drive section measurement gas circuit valve 2, and send alarm.
(5) drive section and multiple sensors measurement same positions are provided with by drive section and test section, should first open big
Range sensorses, select the sensor for showing suitable range to export further according to the change of actual value by switch valve operation.
All equal setting range limitations of input information, all show values set alarm limit system.
The above, optimal specific embodiment only of the invention, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
Should all be included within the scope of the present invention.
The content not being described in detail in description of the invention belongs to the known technology of professional and technical personnel in the field.
Claims (7)
1. a kind of impulse wind tunnel operation control system, it is characterised in that：Put including PLC module, drive section charging valve, drive section
Air valve, drive section pressure sensor, 1/2 valve, double films section deflation valve, double films section pressure sensor, inflated by drive section
Valve, valve of being deflated by drive section, by drive section pressure measuring module, by drive section vacuum-pumping valve, test section deflation valve,
Test section vacuum-pumping valve, test section pressure sensor, vacuum pump set；
The drive section charging valve is used to be controlled under the control of PLC module the inflation of drive section, the drive section vent valve
, for the deflation of the control drive section under the control of PLC module, the drive section pressure sensor is for detecting drive section for door
Pressure P1, and it is sent to PLC module；
1/2 valve controls the inflation of double film sections under the control of PLC module, and double film section deflation valves are used in PLC module
Control under the double films sections of control deflation, described pair of film section pressure sensor is used to measure the pressure P2 of double films sections, and is sent to
PLC module；
Controlled to be inflated by drive section under the control of PLC module by drive section charging valve, by drive section deflation valve in PLC moulds
Control to be deflated by drive section under the control of block, by drive section vacuum-pumping valve controlled under the control of PLC module by drive section with
Vacuum pump set is connected, and is measured under the control of PLC module by the pressure P3 of drive section by drive section pressure measuring module；
The deflation of test section deflation valve Control experiment section under the control of PLC module, test section vacuum-pumping valve is in PLC module
Control under Control experiment section connected with vacuum pump set, test section pressure sensor measures test section under the control of PLC module
Pressure P4；
What vacuum pump set was connected under the control of PLC module for it is vacuumized by drive section or test section；
PLC module controls the drive section charging valve to open for drive section is inflated, and receives the drive section pressure sensor and uses
In the pressure P1 of detection；It is double film section inflations that PLC module controls 1/2 valve opening, receives described pair of film section pressure sensing
Device is used for the pressure P2 for detecting, when the difference of P1-P2 is more than the half of drive section pressure set points, controls the drive section to fill
Air valve is closed, until when the difference of P1-P2 is less than or equal to the half of P1 setting values, reopening drive section charging valve；
As bleed pressure Psource>During 15MPa, control drive section charging valve is closed when P1 reaches α times of setting value, is stopped
Inflation, 0.95<α<0.97, as bleed pressure 10MPa<Psource<During 15MPa, control drives when P1 reaches β times of setting value
Section charging valve is closed, and stops inflation, 0.97<β<0.99, as bleed pressure Psource<During 10MPa, compressor is opened in control
For source of the gas is inflated；After drive section inflation stops, after waiting drive section gas pressure balancing, judge whether the pressure P1 of detection meets
It is required that, think to meet the requirements if the difference between the pressure P1 and setting value of detection is more than setting value less than 1% or P1,
Inflation is completed, if undesirable, open drive section charging valve and drive section charging valve is closed after N seconds, until detection
Pressure P1 meet the requirements；
PLC module control is opened by drive section vacuum-pumping valve, and control vacuum pump set receives the quilt to being vacuumized by drive section
Drive section pressure sensor is used for the pressure P3 for detecting, when the pressure P3 of detection reaches setup pressure value, PLC module control is taken out
Vacuum valve is closed, and it is to be inflated by drive section to control described unlatching by drive section charging valve；As bleed pressure Psource>
During 10MPa, control drive section charging valve is closed when P3 reaches 1 times of the α of setting value, stops inflation, 0.97<α1<0.99；Work as gas
Source pressure Psource<During 10MPa, control to open compressor for source of the gas is inflated；After drive section inflation stops, drive section gas is waited
After body pressure balance, judge whether the pressure P3 of detection meets the requirements, if the difference between the pressure P3 and setting value of detection
Less than 1% or P3 then thinks to meet the requirements more than setting value, inflation is completed, if undesirable, opened drive section and is filled
Drive section charging valve is closed after air valve N seconds, until the pressure P3 of detection meets the requirements；
PLC module Control experiment section vacuum-pumping valve is opened, and control vacuum pump set is vacuumized to test section, and PLC module receives examination
The pressure P4 that section pressure sensor sends test section is tested, when the pressure P4 of test section reaches setup pressure value, PLC module control
Test section vacuum-pumping valve is closed；
After PLC module detection P1, P2, P3, P4 are satisfied by requiring, all valves are closed；
When on-test, the double film section deflation valve openings of PLC module control, the gas of drive section breaks through pair diaphragm of films section and enters
Enter by drive section, then break through single-iris and enter test section；Drive section deflation valve is opened after the time of specifying, by drive section vent valve
Door and test section deflation valve, complete experiment.
2. impulse wind tunnel operation control system according to claim 1, it is characterised in that by drive section pressure measuring module bag
Include high-pressure measurement pipeline, low pressure measurement pipeline, the first valve, the second valve, high pressure sensor, low pressure sensor and
Vacuum transducer；The first Valve controlling high-pressure measurement pipeline is connected with by drive section, and second Valve controlling is low
Pressure pressure measures pipeline and measures pipeline connection, the pressure in high pressure sensor measurement high-pressure measurement pipeline with high-pressure
P31, low pressure sensor and vacuum transducer measurement low pressure measurement pipeline in pressure, pressure measuring value be respectively P32 and
P33；
After PLC module control is opened by drive section vacuum-pumping valve, the first valve opening, high pressure sensor measurement high pressure pressure are controlled
Pressure P31 in power measurement pipeline, and PLC module is sent to, PLC module is using P31 as by the pressure P3 of drive section；Work as pressure
Less than when the range upper limit equal to low pressure sensor, the second valve, low pressure sensor measurement are opened in PLC module control to power P31
Pressure P32 in low pressure measurement pipeline, and PLC module is sent to, PLC module is using P32 as by the pressure of drive section
P3；When the range upper limits of the pressure P32 less than or equal to vacuum transducer, vacuum transducer measurement low pressure measurement pipeline is opened
Interior pressure P33, and PLC module is sent to, PLC module is using P33 as by the pressure P3 of drive section；Set when pressure P3 reaches
During level pressure force value, PLC module control vacuum-pumping valve and the second valve closing, PLC module is using P31 as by the pressure of drive section
Power P3.
3. impulse wind tunnel operation control system according to claim 2, it is characterised in that the PLC module includes first
PLC, the 2nd PLC and the 3rd PLC；First PLC receives the control instruction of the 3rd PLC, control drive section charging valve, driving
Duan Fangqi valves, 1/2 valve, double films section deflation valve, valve of being deflated by drive section charging valve, by drive section, the first valve,
The opening and closing of the second valve, test section deflation valve, receive drive section pressure sensor, double films section pressure sensor, examination
The pressure data that section pressure sensor sends is tested, and is sent to the 3rd PLC；The control that 2nd PLC receives the 3rd PLC refers to
Order, control by drive section vacuum-pumping valve, test section vacuum-pumping valve, vacuum pump set opening and closing, and by vacuum pump set
Running state parameter timing is sent to the 3rd PLC；3rd PLC receives the outside test parameters instruction for sending, experiment and prepares
Instruction, on-test, instruct and are sent to a PLC, will control by drive section vacuum-pumping valve, test section vacuum-pumping valve, true
The opening and closing instruction of empty unit is sent to the 2nd PLC.
4. impulse wind tunnel operation control system according to claim 2, it is characterised in that when setting the blowing pressure is higher than being driven
During dynamic section low pressure sensor range, when PLC module control is opened by drive section charging valve, by drive section vacuum-pumping valve and the
Two valve closings are simultaneously locked, it is impossible to manually opened.
5. impulse wind tunnel operation control system according to claim 2, it is characterised in that when pressure in test section gas replenishment process
When P1 reaches 0.8 times of setting value, PLC module control vacuum-pumping valve and the second valve closing are simultaneously locked, it is impossible to manually opened.
6. impulse wind tunnel operation control system according to claim 2, it is characterised in that low pressure sensor and vacuum transducer
When measured pressure value exceedes itself range, PLC module sends alarm signal.
7. a kind of control method based on impulse wind tunnel operation control system described in claim 1 or 2, it is characterised in that including such as
Lower step：
(1) PLC module control is vacuumized to test section, until setup pressure value；
(2) in (1) vacuum, PLC module is controlled to carrying out pressure regulation by drive section, until reaching setting pressure
Value；
(3) after the completion of (1) (2) step, PLC module control is inflated to drive section and double film sections, until drive section and double film sections
Pressure reaches setup pressure value；
(4) whether PLC module judges be satisfied by requiring by the pressure of drive section, test section, drive section and double films section, if met
It is required that closing all valves, start experiment, if being unsatisfactory for requiring, timing 15 minutes, wait 15 minutes are started since step (3)
Still backlog demand, applies for manual intervention afterwards；
(5) PLC module opens double film section vent valves, self-driven section of test air-flow, double films section, flows to test section by drive section, enters
Row experiment, off-test after double film section rupture 1s；All vent valves are opened in PLC controls.
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| CN107806977A (en) * | 2017-11-29 | 2018-03-16 | 中国航空工业集团公司沈阳空气动力研究所 | A kind of high enthalpy impulse wind tunnel pipe structure of the wide Mach number of combined type |
| CN108051176A (en) * | 2017-11-29 | 2018-05-18 | 中国航空工业集团公司沈阳空气动力研究所 | A kind of high enthalpy tube wind tunnel driving tube body of width Mach number |
| CN108181078A (en) * | 2017-12-19 | 2018-06-19 | 中国航天空气动力技术研究院 | A kind of piston for gun wind tunnel stops stop device |
| CN108398272A (en) * | 2017-12-14 | 2018-08-14 | 中国航天空气动力技术研究院 | A kind of fuel system and method for the experiment of shock tunnel super burn engine inlets |
| CN108662173A (en) * | 2018-07-02 | 2018-10-16 | 中北大学 | A kind of valve for connecting shock tube low pressure stage and vacuum pump |
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| CN111006841A (en) * | 2019-11-29 | 2020-04-14 | 中国航天空气动力技术研究院 | Wide-area air inlet pressure regulating system for hypersonic wind tunnel |
| CN111521349A (en) * | 2020-04-21 | 2020-08-11 | 博众精工科技股份有限公司 | Inflation and deflation control method, device and system, electronic equipment and medium |
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| CN114544136A (en) * | 2022-04-22 | 2022-05-27 | 中国航空工业集团公司沈阳飞机设计研究所 | Embedded surface pressure gradient measuring device |
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| CN108827072A (en) * | 2018-08-24 | 2018-11-16 | 杜蘅轩 | It is a kind of can inflation/deflation transmitting moving system |
| CN111006841A (en) * | 2019-11-29 | 2020-04-14 | 中国航天空气动力技术研究院 | Wide-area air inlet pressure regulating system for hypersonic wind tunnel |
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| CN111521349A (en) * | 2020-04-21 | 2020-08-11 | 博众精工科技股份有限公司 | Inflation and deflation control method, device and system, electronic equipment and medium |
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| CN113720571B (en) * | 2021-06-02 | 2023-12-12 | 中国航天空气动力技术研究院 | Ludwieg tubular static wind tunnel and starting method thereof |
| CN114184349A (en) * | 2022-02-15 | 2022-03-15 | 中国空气动力研究与发展中心高速空气动力研究所 | Method for obtaining supersonic jet static operation pressure matching point of jet wind tunnel |
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