CN106840582B - 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 film section deflation valves, double film section pressure sensors, by drive section charging valve, by drive section deflation valve, 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 automatic control that wind tunnel test process is realized by PLC module, using distributed control mode, all operations are completed between observing and controlling, do not need to enter scene progress operation, high-pressure air source has been isolated, ensure that personnel's operational safety.
Description
Technical field
The present invention relates to a kind of impulse wind tunnel operation control system and impulse wind tunnel progress control methods, belong to hypersonic
The gas circuit operation control of impulse wind tunnel system and status monitoring field.
Background technique
Impulse type wind-tunnel refers to the wind-tunnel that pulse testing air-flow is generated in very short time (a few tens of milliseconds was to 1 second)
(" GJB4296 wind tunnel test term and symbol ").Impulse wind tunnel is mainly by drive section, double film sections, 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, total temperature, stagnation pressure.Mach number passes through
It replaces jet pipe to realize, to guarantee pressure ratio before and after jet pipe, experimentation needs test section being evacuated to low-pressure state；Reynolds number pass through by
Drive section gas pressure, the control of drive section gas pressure；Total temperature, stagnation pressure pass through driving gas pressure control；Gas is driven for control
Body Rupture of Membrane pressure is provided with double diaphragm sandwiched film mechanisms to form gradient pressure and reaches predetermined Rupture of Membrane pressure to high-pressure gas pressure
When discharge rapidly sandwiched film mechanism internal pressure, make rupture of diaphragm.
Common gas source trend and workshop layout are as shown in Figure 1.Largely control work is manual by experimenter for wind tunnel experiment
Operation is completed, and whole high-pressure air sources are both needed to be introduced into control room progress manual control, and entire gas source route is long, pressure is high, easily goes out
Failure is unfavorable for safeguarding, there are great security risks.Secondly, conventional control mode is visually observed using manual operation valve
The process of recording status information, operation controls poor repeatability and data record has deviation.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of impulse wind tunnel operation control system and pulses
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 film section deflation valves, double film section pressure sensors, by drive section charging valve,
By drive section deflation valve, 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 put for controlling the inflation of drive section, the drive section under the control of PLC module
Air valve under the control of PLC module for controlling the deflation of drive section, and the drive section pressure sensor is for detecting 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, double film section pressure sensors are used to measure the pressure P2 of double film sections, concurrently
Give PLC module；
It is controlled under the control of PLC module by drive section charging valve and is inflated by drive section, existed by drive section deflation valve
Control is deflated by drive section under the control of PLC module, is controlled and is driven under the control of PLC module by drive section vacuum-pumping valve
Section is connected to 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 to 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；
Vacuum pump set being vacuumized by drive section or test section for its connection under the control of PLC module；
It is that drive section is inflated that PLC module, which controls the drive section charging valve, which opens, receives the drive section pressure sensing
Pressure P1 of the device for detection；It is double film section inflations that PLC module, which controls 1/2 valve opening, receives double film section pressure
Pressure P2 of the sensor for detection controls the driving when the difference of P1-P2 is greater than the half of drive section pressure set points
Section charging valve is closed, until reopening drive section charge valve when the difference of P1-P2 is less than or equal to the half of P1 setting value
Door；
As bleed pressure Psource > 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 < 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 < 10MPa, pressure is opened in control
Contracting machine is gas source inflation；After drive section inflation stops, after waiting drive section gas pressure balancing, whether the pressure P1 detected is judged
It meets the requirements, thinks to meet less than 1% or if P1 is greater than the set value if the difference between the pressure P1 of detection and setting value
It is required that inflation is completed, if it does not meet the requirements, then drive section charging valve is closed after opening drive section charging valve 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 is vacuumized to by drive section, receives institute
State the pressure P3 by drive section pressure sensor for detection, when the pressure P3 of detection reaches setup pressure value, PLC module control
Vacuum-pumping valve processed is closed, and described opened by drive section charging valve to be inflated by drive section is controlled；As bleed pressure Psource
When>10MPa, control drive section charging valve is closed when P3 reaches 1 times of α of setting value, stops inflation, 0.97<α 1<0.99；When
When bleed pressure Psource < 10MPa, control opens compressor as gas source inflation；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 is greater than the set value less than 1% or P3, thinks to meet the requirements, and inflation is completed, and if it does not meet the requirements, then 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 vacuumizes 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 all satisfied requirement, all valves are closed；
When on-test, PLC module controls double film section deflation valve openings, and 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 specified time, is put by drive section
Air valve and test section deflation valve complete test.
It preferably, include high-pressure measurement pipeline, low pressure measurement pipeline, first by drive section pressure measuring module
Valve, the second valve, high pressure sensor, low pressure sensor and vacuum transducer；The first valve control high-pressure measurement
Pipeline is connected to by drive section, and the second valve control low pressure measurement pipeline and high-pressure measure pipeline connection, high
Pressure sensor measures the pressure P31 in high-pressure measurement pipeline, and low pressure sensor and vacuum transducer measurement low pressure are surveyed
Pressure in buret road, pressure measuring value are 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 pressure measures the pressure P31 in pipeline, and is sent to PLC module, and PLC module is using P31 as by the pressure P3 of drive section；
When pressure P31 is less than when being equal to the range upper limit of low pressure sensor, the second valve, low pressure sensor are opened in PLC module control
The pressure P32 in low pressure measurement pipeline is measured, and is sent to PLC module, PLC module is using P32 as by drive section
Pressure P3；When pressure P32 is less than or equal to the range upper limit of vacuum transducer, vacuum transducer measurement low pressure measurement is opened
Pressure P33 in pipeline, and it is sent to PLC module, PLC module is using P33 as by the pressure P3 of drive section；When pressure P3 reaches
When to setup pressure value, PLC module controls vacuum-pumping valve and the second valve is closed, and PLC module is used as using P31 by drive section
Pressure P3.
Preferably, the PLC module includes the first 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 film section deflation valves, by drive section
Charging valve, by the opening and closing of drive section deflation valve, the first valve, the second valve, test section deflation valve, receive and drive
The pressure data that dynamic section pressure sensor, double film section pressure sensors, test section pressure sensor are sent, and it is sent to third
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 vacuum pump set running state parameter is periodically sent to the 3rd PLC；3rd PLC connects
The external test parameters instruction sent of receipts, test preparation instruction, on-test, instruct and are sent to the first PLC, are driven controlling
The opening and closing instruction of dynamic section vacuum-pumping valve, test section vacuum-pumping valve, vacuum pump set is sent to the 2nd PLC.
Preferably, when setting the blowing pressure higher than by drive section low pressure sensor range, PLC module is controlled by drive section
When charging valve is opened, is closed and locked by drive section vacuum-pumping valve and the second valve, it can not be 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 are closed and are locked, can not be manually opened.
Preferably, when low pressure sensor and vacuum transducer measured pressure value are more than itself range, PLC module issues alarm
Signal.
A kind of control method using the impulse wind tunnel operation control system is provided simultaneously, is included the following steps:
(1) PLC module control vacuumizes test section, until setup pressure value；
(2) in (1) vacuum, PLC module control carries out pressure adjusting to by drive section, until reaching setting pressure
Force value；
(3) after the completion of (1) (2) step, PLC module control is to drive section and the inflation of double film sections, until drive section and double
Film section pressure reaches setup pressure value；
(4) PLC module judges whether the pressure by drive section, test section, drive section and double film sections is all satisfied requirement, if
It meets the requirements and closes all valves, start to test, if the requirements are not met, then starts timing 15 minutes since step (3), waiting 15
Still backlog demand after minute applies for manual intervention；
(5) PLC module opens double film section vent valves, and test air-flow flows to test from drive section, double film sections, by drive section
Section, is tested, off-test after double film section rupture 1s；All vent valves are opened in PLC control.
The invention has the following advantages over the prior art:
(1) present invention uses distributed control mode, and all operations are completed between observing and controlling, does not need to be made into scene
High-pressure air source has been isolated in industry, ensure that personnel's operational safety.
(2) present invention carries out data acquiring and recording using PLC, can be realized display and the accurate recording of control parameter, mentions
The high confidence level of operation data and the repeatability of operating status.
(3) present invention carries out inflation/deflation operation using PLC, by real time contrast's mode of setting value and target value, for
Different the blowing pressures take Different Strategies, improve inflation accuracy, and reduce the personnel to operate intensity.
(4) for by the pressure ranges larger part such as drive section, vacuum meter, low pressure sensor and high pressure sensing are taken
The mode that device combines, fragmet auto-switch show current value, improve data collection and control precision.
Detailed description of the invention
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 functional block 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 film section deflation valves, double film section pressure sensors, by drive section charging valve,
By drive section deflation valve, 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.It implements function such as:
1, segmented pressure measurement and data record
Pipeline is measured by drive section connection high-pressure, measurement gas path on-off is controlled by valve 1, the high pressure after valve 1
Connection low pressure in pressure measuring tube road measures pipeline, controls low pressure measurement pipe drive test amount gas path on-off by valve 2.
As shown in Fig. 2, needing pressure to be possible to from tens pas to several hundred kPas depending on test by drive section.If using solid
Determine range sensors, will certainly there is a situation where measurement accuracy deficiency.The present invention is used using three kinds of sensor combinations, and high pressure passes
Sensor P31 (0~2MPa), low pressure sensor P32 (0~150KPa), (0~3KPa, resistance to compression are greater than vacuum transducer P33
150KPa) measurement is by the pressure P3 of drive section, therefore, in order to improve test measurement precision, devises using three kinds of sensors point
The form of section measurement.When to pumping or charge operation is carried out by drive section, first Open valve 1 will be by the gas of drive section
It is introduced into, opens high pressure sensor P31 and begin with reading, then determine according to following rules.
In pumping process as P31 > Pset1, it is higher to represent current pressure values, and current pressure values use high pressure sensor
P31 measurement is P3=P31；Pset1 is set as the range upper limit of low pressure sensor, such as can be set to 150KMpa.
As P31 < Pset1, it is smaller to represent current pressure values, Open valve 2, passes through and determines that P32 obtains current pressure values；
As P32 > Pset2, current pressure values P3=P32, otherwise current pressure values are P3=P33；Pset2 is set as
The range upper limit of vacuum transducer, such as can be set to 3KPa.
Valve 2 is closed in gas replenishment process, is measured using high pressure sensor P31 by the pressure P3 of drive section.
The on-off of above-mentioned judgement and valve passes through PLC control, and storage and show value are pressure P3.
All data acquisitions are carried out according to 20Hz sample rate, when on-test, by drive section close to single clip film location
Total-pressure probe has unexpected pressure and rises, at this time as flash test state, records each sampled point pressure value conduct at this time
Test parameters participates in follow-up data and calculates.Trystate can relatively accurately be recorded using such samples storage mode, avoided
Artificial reading bring error.
2, automatic pressure is adjusted
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
Isloation state control and design.
(1) drive section gas pressure P1 is adjusted:
Drive section gas pressure, which is adjusted, mainly to be completed by switch drive section charge valve.Since pipeline bore limits and fills
The limitation of gas process pressure sensor reaction speed is easy to cause if carrying out control to charge valve only with direct threshold value setting method
Pressure overshoot phenomenon.If overshoot is larger, pressure decline is difficult to control by vent valve.Therefore it is required that gas replenishment process is controllable.Root
According to bleed pressure Psource and by the relationship between drive section volume, it is as follows to summarize inflation rule:
As Psource>15MPa, P1 stops inflation (0.95<α<0.97) when reaching α times of setting value；
As Psource<15MPa and Psource>10MPa, P1 stop when reaching β times of setting value inflation (0.97<β<
0.99)；
As Psource < 10MPa, assert that air pressure is insufficient, needs to open compressor inflation.
After aeration phase stops, after drive section gas pressure balancing (about 30s), the difference compared between P1 and setting value is small
It is greater than the set value in 1% or P1, assert that inflation is completed.Otherwise opening point mold filling formula, i.e., unlatching charge valve 2s after close again into
Row determines until inflation terminates.
(2) double film section gas pressure P2 are adjusted:
It directly takes drive section gas to be inflated by 1/2 valve in double film sections, finally obtains P2=1/2P1, pressurising rate
It can not directly be adjusted by 1/2 valve.If too fast by drive section inflation rate, and 1/2 valve inflation rate is unable to satisfy condition
Cause pressure difference between P1 and P2 larger, easily causes double film section diaphragms to rupture in advance, lead to test failure, and easily cause vacuum
Unit and low pressure sensor damage.
Therefore, setting segmentation airing form is taken, when the two pressure difference is greater than the set value Perror (taking 1/2P1 setting value)
Drive section charge valve is closed, inflation is stopped, restarting to inflate when the two P1:P2 pressure ratio is close to 2:1.Such as: setting P1
It is inflated to 10MPa, then when (P1-P2) > 5MPa, controls the drive section charging valve and closes, until when (P1-P2)≤5MPa,
Reopen drive section charging valve.
(3) it is adjusted by drive section gas pressure P3:
It is adjusted by drive section gas pressure and is adjusted by charge valve, vacuum pump two ways.When setup pressure value is small
In an atmospheric pressure or when needing replacing by gas condition in drive section, needs to open vacuum pump and be evacuated.Pumping process
The switch of the start and stop and vacuum valve that directly control vacuum pump is realized.
Gas replenishment process is similar with drive section gas pressure P1 adjusting, also segmented is taken to inflate.
As Psource>10MPa, P3 stops inflation (0.97<α 1<0.99) when reaching 1 times of α of setting value；
As Psource < 10MPa, assert that air pressure is insufficient, needs 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
It asks, thinks to meet the requirements less than 1% or if P3 is greater than the set value if the difference between the pressure P3 of detection and setting value, fill
Gas is completed, and if it does not meet the requirements, then drive section charging valve is closed after opening drive section charging valve N seconds, until detection
Pressure P3 meets the requirements；
(4) test section gas pressure P4 is adjusted:
When vacuumizing, gas circuit valve and vacuum-pumping valve, vacuumize test section, work as pressure where turn on sensor
It when less than setting value and when continuing 10s or more, completes to vacuumize, closes vacuum-pumping valve,；Real-time monitoring current vacuum level is big
In setting value, greater than then reopening vacuum-pumping valve vacuumize process.
Control method includes the following steps:
(1) PLC module control vacuumizes test section, until setup pressure value；
(2) in (1) vacuum, PLC module control carries out pressure adjusting to 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 inflation of double film sections, until drive section and double
Film section pressure reaches setup pressure value；
(4) PLC module judges whether the pressure by drive section, test section, drive section and double film sections is all satisfied requirement, if
It meets the requirements and closes all valves, start to test, if the requirements are not met, then timing 15 minutes since step (3), has waited
Still backlog demand after finishing pops up the application manual intervention of Manual test dialog box；
(5) PLC module opens double film section vent valves, and test air-flow flows to test from drive section, double film sections, by drive section
Section, is tested.Off-test after double film section rupture 1s；All vent valves, off-test are opened in PLC control.
After P1~P4 sections of pressure are all satisfied requirement, all valves are closed.
Double film section deflation valves are opened, decline P2 rapidly, P1 is expanded rapidly with P2 pressure difference, makes rupture of diaphragm, is completed real
It tests.All deflation valves are opened after duration of test runs 1s, 2s.
Test section needs to guarantee low-pressure state during the test, by the start and stop and the vacuum valve that directly control vacuum pump
Switch is to realize.
As shown in figure 4, using distributed control mode, main control computer that control system is arranged between gas control by one
It is connect by Industrial Ethernet with main control PLC.Main control PLC can be achieved locally, remotely to manually control with equipment room scene PLC communication
Function both can remotely operate or be switched to local mode between gas control in this way and be controlled at the scene.System realizes valve
Door operation and vacuum pump operation automation function, and have the function of real time data monitoring, overpressure protection etc..Entire control program mentions
High the degree of automation of gas source control, simultaneity factor have good scalability.
High-pressure gas circuit is all moved to the less testing ground of personnel activity, effectively realizes high-pressure air source and personnel
Isolation.It being fed back through operations staff, system run all right is reliable, and it is simple and efficient to handle, largely improve wind tunnel operation efficiency.
Simultaneously because operated pneumatic valve is deflated, repeatability preferably, compared with manual operation, effectively improves wind tunnel operation precision.
System's operating mode is divided into long-range monitoring and two kinds of local operation, and the two is cut by primary control program between observing and controlling
It changes.It is located at right above test section three buildings between observing and controlling, station and main control computer are located therein.
3, long-range monitoring
System mainly operates in long-range monitoring mode, i.e. operator by station button between observing and controlling or runs on work
Control picture on control machine operates all parts.
It operates under long-range monitor mode, is set to the touch screen beside wind-tunnel line and is only used for display current state, it cannot
Carry out any operation input.Under long-range monitoring mode, and can be switched by the selection of station runs on system manually, partly
Automatically, three kinds of different modes automatically, valve state is constant in each mode handoff procedure.
(1) manual mode
System runs on long-range monitor mode, and station selects manual mode.All controls of system pass through under this mode
Station entity button carries out, and each button corresponds to each switch, clicks button by operator and operate, in background program
It is not provided with safety interlocking.
(2) semiautomatic-mode
It under semiautomatic-mode, is operated by the entity button on testing stand, but simplifies operation button quantity and carry out
Corresponding safety interlocking setting, guarantee test are gone on smoothly.
(3) automatic mode
Under automatic mode, after setting operation state (drive section pressure, by drive section pressure), clicks " beginning " and press
Button is automatically performed drive section charge operation, and provides prompt information, the progress next step operation after operator's confirmation, and according to
Experiment process carries out according to this.For automatic mode, operator can cancel the mode according to the actual situation in test process, and
It can facilitate and carry out subsequent manual operation.
4, local operation
After setting local operation in primary control program, primary control program and station button lose operation input function, only
Do status display.System passes through the local touch screen being arranged near double film sections and is operated.Touch screen shows current main pressure
Force parameter can operate all valve switch simultaneously its current state of real-time display.
As shown in figure 5, listing all operationss process once tested.
(1) " on-test " button is clicked, setting or confirmation parameter determine test parameters.
It sets drive section pressure (MPa), 0-1, default (is limited by drive section pressure (MPa) and rupture of membranes threshold coefficient
0.8).Other parameters are only shown.
(2) vacuum pump set vacuumizes instruction to vacuum pump set transmission according to set device state；
" starting to vacuumize " ACK button is clicked, test section vacuum pump system open command opens vacuum-pumping valve, opens
" vacuum meter valve "
(3) it according to test requirements document, is evacuated by drive section after inflating or vacuumizing and fills test gas；
Two options are popped up by drive section, fill test gas or air.
Test gas is filled in selection, open by drive section " vacuum pump valve, open by drive section " surveying pressure main valve ", open and " survey true
Empty valve " closes vacuum pump after reaching predetermined vacuum degree.It opens " test gas valve " and fills test gas, determined according to setting pressure,
Whether " survey vacuum valve " is closed.Keep " surveying pressure main valve ".After inflation, 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 " surveying pressure main valve ".After inflation, 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 being charged to test pressure, is closed " charge valve ".
(4) ensure to be in close state by the operated pneumatic valve in drive section and drive section before starting test；
It automaticly inspects " by drive section vent valve " and whether " drive section vent valve " is in off state, prompt " 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；
Inspection finishes, pop-up " whether rupture of membranes " dialog box, and selection is to open " main folder film vent valve ".
(6) it is deflated by drive section, vacuum pump set is closed, emptying；
" by drive section vent valve ", " drive section vent valve " are opened, vacuum pump set respective valves are closed, opens " test section
Vent valve ".
(7) test finishes
Vent valve is kept to open, other valves are closed.
5, experimental report
Experimental report function essential record current operator, test rupture of membranes time and corresponding drive section, double film sections and
By drive section rupture of membranes when pressure value.There are two decision procedures for this function record point: first is that pressing double film section release button moment；
Second is that not pressing lower button but automatic rupture of membranes moment, needed at this time by judging that double film section pressure declines are greater than the set value X.
Experimental report should have the function of to be derived automatically from, and specific format is referring to given reference paper.
All pressure sensors should have the function of to demarcate zero point.
6, interlock requirement
(1) 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) determining that pressure is more than 1.5MPa, cannot be opened by drive section measurement gas circuit valve 1 (is prevented after rupture of membranes without abundant
Deflation turns on measurement gas circuit valve, leads to sensor degradation).
(2) it when being opened by drive section charge valve, cannot be opened by valve in drive section vacuum and low pressure measurement gas circuit, it can not
It is manually opened.
(3) test requirements document drive section state is X MPa, when drive section inflation reaches 0.8X MPa, (is completed at this time
P3, P4 pressure are adjusted) it is in and closes by drive section measurement gas circuit valve, vacuumize the closing of branch pneumatic operated valve.(prevent diaphragm from manufacturing
Error causes prematurely ruptured membrane).
(4) it when being outranged by drive section low pressure sensor, is closed by drive section measurement gas circuit valve 2, and sound an alarm.
(5) drive section and multiple sensor measurement same positions are equipped with by drive section and test section, should first opened big
Range sensors, the variation further according to actual value select the sensor for showing suitable range to export by switch valve operation.
All input information set scope limitation, and all show values set alarm limit system.
The above, optimal specific embodiment only of the invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.
The content that description in the present invention is not described in detail belongs to the well-known technique 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, 1/2 valve, double film section deflation valves, double film section pressure sensors, is inflated by drive section drive section pressure sensor
Valve, by drive section deflation valve, 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 under the control of PLC module for controlling the inflation of drive section, the drive section vent valve
Door is used to detect the pressure of drive section for controlling the deflation of drive section, drive section pressure sensor under the control of PLC module
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 control the deflation of double film sections, double film section pressure sensors are used to measure the pressure P2 of double film sections, and are sent to
PLC module；
It is controlled under the control of PLC module by drive section charging valve and is inflated by drive section, by drive section deflation valve in PLC mould
Control is deflated by drive section under the control of block, control under the control of PLC module by drive section vacuum-pumping valve by drive section and
Vacuum pump set connection, 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 be connected to vacuum pump set, test section pressure sensor measures test section under the control of PLC module
Pressure P4；
Vacuum pump set being vacuumized by drive section or test section for its connection under the control of PLC module；
It is that drive section is inflated that PLC module, which controls the drive section charging valve, which opens, receives the drive section pressure sensor and uses
In the pressure P1 of detection；It is double film section inflations that PLC module, which controls 1/2 valve opening, receives double film section pressure sensings
Pressure P2 of the device for detection controls the drive section and fills when the difference of P1-P2 is greater than the half of drive section pressure set points
Air valve is closed, until reopening drive section charging valve when the difference of P1-P2 is less than or equal to the half of P1 setting value；
As bleed pressure Psource > 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 < 15MPa, control driving 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 < 10MPa, compressor is opened in control
For gas source inflation；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 less than 1% or if P1 is greater than the set value if the difference between the pressure P1 of detection and setting value,
Inflation is completed, and if it does not meet the requirements, then drive section charging valve is closed after opening drive section charging valve 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 is vacuumized to by drive section, and reception is driven
Pressure P3 of the section pressure sensor for detection, when the pressure P3 of detection reaches setup pressure value, PLC module control is vacuumized
Valve is closed, and described opened by drive section charging valve to be inflated by drive section is controlled；As bleed pressure Psource > 10MPa
When, control drive section charging valve is closed when P3 reaches 1 times of α of setting value, stops inflation, 0.97 < α 1 < 0.99；When gas source pressure
When power Psource < 10MPa, control opens compressor as gas source inflation；After drive section inflation stops, drive section gas pressure is waited
After dynamic balance, judge whether the pressure P3 of detection meets the requirements, if the difference between the pressure P3 and setting value of detection is less than
1% or P3 is greater than the set value, and thinks to meet the requirements, and inflation is completed, and if it does not meet the requirements, then opens drive section charge valve
Door closes drive section charging valve after 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 vacuumizes 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 all satisfied requirement, all valves are closed；
When on-test, PLC module controls double film section deflation valve openings, the gas of drive section break through the diaphragms of double film sections into
Enter by drive section, then breaks through single-iris and enter test section；Drive section deflation valve is opened after specified time, by drive section vent valve
Door and test section deflation valve complete test.
2. impulse wind tunnel operation control system according to claim 1, which is characterized in that by drive section pressure measuring module packet
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 control high-pressure measurement pipeline is connected to by drive section, and the second valve control is low
Pressure pressure measures pipeline and high-pressure measures pipeline connection, and high pressure sensor measures the pressure in high-pressure measurement pipeline
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 is controlled, high pressure sensor measures high pressure pressure
Power measures the pressure P31 in pipeline, and is sent to PLC module, and PLC module is using P31 as by the pressure P3 of drive section；Work as pressure
Power P31 is less than when being equal to the range upper limit of low pressure sensor, and the second valve, low pressure sensor measurement are opened in PLC module control
Low pressure measures the pressure P32 in pipeline, and is sent to PLC module, and PLC module is using P32 as by the pressure of drive section
P3；When pressure P32 is less than or equal to the range upper limit of vacuum transducer, opens vacuum transducer measurement low pressure and measure pipeline
Interior pressure P33, and it is sent to PLC module, PLC module is using P33 as by the pressure P3 of drive section；It is set when pressure P3 reaches
When level pressure force value, PLC module controls vacuum-pumping valve and the second valve is closed, and 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, which is characterized 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 valve, 1/2 valve, double film section deflation valves, by drive section charging valve, by drive section deflation valve, the first valve,
The opening and closing of second valve, test section deflation valve receive drive section pressure sensor, double film section pressure sensors, examination
The pressure data that section pressure sensor is sent is tested, and is sent to the 3rd PLC；The control that 2nd PLC receives the 3rd PLC refers to
It enables, controls by the opening and closing of drive section vacuum-pumping valve, test section vacuum-pumping valve, vacuum pump set, and by vacuum pump set
Running state parameter is periodically sent to the 3rd PLC；3rd PLC receives external test parameters instruction, the test sent and prepares
Instruction, on-test instruct and is sent to the first PLC, will control by drive section vacuum-pumping valve, test section vacuum-pumping valve, very
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, which is characterized in that driven when setting the blowing pressure is higher than
When 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 valves are closed and are locked, can not be manually opened.
5. impulse wind tunnel operation control system according to claim 2, which is characterized 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 are closed and are locked, can not be manually opened.
6. impulse wind tunnel operation control system according to claim 2, which is characterized in that low pressure sensor and vacuum transducer
When measured pressure value is more than itself range, PLC module issues alarm signal.
7. a kind of control method based on impulse wind tunnel operation control system as claimed in claim 1 or 2, it is characterised in that including such as
Lower step:
(1) PLC module control vacuumizes test section, until setup pressure value；
(2) in (1) vacuum, PLC module control carries out pressure adjusting to by drive section, until reaching setting pressure
Value；
(3) after the completion of (1) (2) step, PLC module control is to drive section and double film section inflations, until drive section and double film sections
Pressure reaches setup pressure value；
(4) PLC module judges whether the pressure by drive section, test section, drive section and double film sections is all satisfied requirement, if met
It is required that closing all valves, start to test, if the requirements are not met, then starts timing 15 minutes since step (3), waiting 15 minutes
Still backlog demand afterwards applies for manual intervention；
(5) PLC module opens double film section vent valves, and test air-flow flows to test section from drive section, double film sections, by drive section, into
Row test, double film sections rupture off-test after 1s；All vent valves are opened in PLC control.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104932565A (en) * | 2015-06-04 | 2015-09-23 | 中国空气动力研究与发展中心高速空气动力研究所 | High-precision temporary punching type injecting transonic speed wind tunnel flow field control structure |
| CN105203253A (en) * | 2015-10-14 | 2015-12-30 | 中国航空工业集团公司哈尔滨空气动力研究所 | Multi-range pressure measuring segmentation collecting control method suitable for wind tunnel experiment |
| CN105651482A (en) * | 2015-12-29 | 2016-06-08 | 中国航天空气动力技术研究院 | Control system and method of stop valve and total pressure regulating valve in hypersonic wind tunnel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003075289A (en) * | 2001-08-31 | 2003-03-12 | Mitsubishi Heavy Ind Ltd | Heat storage body heating type wind tunnel system having preheater utilizing exhaust gas and method for controlling burner in wind tunnel system |
-
2016
- 2016-12-23 CN CN201611203362.6A patent/CN106840582B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104932565A (en) * | 2015-06-04 | 2015-09-23 | 中国空气动力研究与发展中心高速空气动力研究所 | High-precision temporary punching type injecting transonic speed wind tunnel flow field control structure |
| CN105203253A (en) * | 2015-10-14 | 2015-12-30 | 中国航空工业集团公司哈尔滨空气动力研究所 | Multi-range pressure measuring segmentation collecting control method suitable for wind tunnel experiment |
| CN105651482A (en) * | 2015-12-29 | 2016-06-08 | 中国航天空气动力技术研究院 | Control system and method of stop valve and total pressure regulating valve in hypersonic wind tunnel |
Non-Patent Citations (1)
| Title |
|---|
| 2m×2m超声速风洞流场控制策略研究与实现;褚卫华 等;《实验液体力学》;20121031;第26卷(第5期);全文 |
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