CN110470777A - A kind of trigger-type energetic material combustion of gaseous product collection system and method - Google Patents
A kind of trigger-type energetic material combustion of gaseous product collection system and method Download PDFInfo
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- CN110470777A CN110470777A CN201910716172.1A CN201910716172A CN110470777A CN 110470777 A CN110470777 A CN 110470777A CN 201910716172 A CN201910716172 A CN 201910716172A CN 110470777 A CN110470777 A CN 110470777A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G—PHYSICS
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Abstract
The present invention relates to a kind of material detection techniques containing energy, especially a kind of trigger-type energetic material combustion of gaseous product collection system and method, a kind of trigger-type energetic material combustion of gaseous product collection system, includes at least: combustion chamber, distribution unit, sampling unit, automatically controlled and signal processing unit；The combustion chamber, to provide the initial environment of sample burning, sidewall of combustion chamber is provided with side wall transparency window, and side wall is equipped with the gas circuit hole of pressure regulation and the gas circuit via hole of sampling；There is opening in combustion chamber up and down, and under shed is equipped with the Xia Kagai of group containing conductive column and crucible, and upper opening is to adjust sample tap position.There is provided one kind can allow scientific research personnel accurately to capture combustion of gaseous product process, and combustion product is saved, it is chemically examined according to scientific research requirement extract, facilitates formula development and a kind of improved trigger-type energetic material combustion of gaseous product collection system and method.
Description
Technical field
The present invention relates to a kind of material detection technique containing energy, especially a kind of trigger-type energetic material combustion of gaseous product is received
Collecting system and method.
Background technique
Energetic material includes propellant powder, explosive and propellant etc..To its combustion of gaseous product evaluation, existing method is main
It is by gas chromatographicanalyzer.There is no corresponding states in the testing and evaluation technology to energetic material combustion product
Family's standard, initial phase, stable section and the latter end of sample burning and the flame of each stage flame is first, in flame, flame tail, burning
Gaseous products ingredient is variant, and scientific research personnel the gaseous products of random collecting for a period of time can only send to gas phase color by rule of thumb
Spectrum analysis instrument is detected.
The starting opportunity of sampling is collected if random open, may result in same formula, gaseous products ratio
It is different, lose the meaning of formula lateral comparison.
Meanwhile high-temperature gas combustion product with burning, sampling, chemical examination and discharges, this process be it is instantaneous continuous, it is right
Experimenter's attainment and equipment requirement are all very high.
Summary of the invention
The object of the present invention is to provide one kind, and scientific research personnel can be allowed accurately to capture combustion of gaseous product process, and by gas
State combustion product is saved, and is chemically examined according to scientific research requirement extract, facilitates formula development and a kind of improved trigger-type containing energy
Material combustion gaseous products collection system and method.
The object of the present invention is achieved like this, a kind of trigger-type energetic material combustion of gaseous product collection system, at least
Include: combustion chamber, distribution unit, sampling unit, automatically controlled and signal processing unit:
The combustion chamber, to provide the initial environment of sample burning, sidewall of combustion chamber is provided with side wall transparency window, side wall
The gas circuit via hole in gas circuit hole and sampling equipped with pressure regulation；There is opening in combustion chamber up and down, and under shed is equipped with containing conductive column
The Xia Kagai of group and crucible, upper opening is to adjust sample tap position.
The side wall transparency window shoots burned flame for high speed camera, and upper opening is cooperated to manually adjust sampling
Mouth alignment targets line 1.
The conductive column group of the lower Ka Gai includes the conductive column to insulate with multichannel and entire combustion chamber and lower Ka Gai, is used
When hyperbaric environment in the combustion chamber, the inside and outside transmission target line on-off signal in combustion chamber and ignition signal.
The target line is divided into 4 tunnels from top to bottom, passes through energetic material, target line is blown when combustion face is passed through；0th road target
Line is set as 10mm from fixation close to igniting flight lead；1st road target line is concordant with sampling mouth, is about the 1/5 of sample overall length away from the 0th tunnel,
3rd curb burning direction is high away from the flame that the 1st tunnel spacing is equal to combustion flame, and the 2nd tunnel is located at 3 section of target 1 and target, relative position
It calculates to obtain by method.
The distribution unit includes the surge flask of booster pump and connection combustion chamber pressure regulation gas circuit hole, for adjusting combustion chamber
Initial pressure, and play buffer function in combustion, gas circuit control is realized by electric signal drive magnetic valve.
The sampling unit is divided into sampling mouth, valve group, multichannel high temperature sampling gas bottle, vacuum pumping pump.
Sampling mouth is located inside the sampling gas circuit hole of combustion chamber, is small latus rectum metal copper pipe, sampling nozzle position is adjustable, manually
It is directed at the side of sample on crucible, it is concordant with 1 position of target line of sample；The other end of probe tube passes through chamber wall, is connected to
Valve group.
Valve group occupy between high temperature sampling gas bottle and sampling mouth, for what is provided according to method output and electronic control unit
Voltage signal drives high-speed electromagnetic valve, and burning Indoor Combustion gaseous products are imported into certain high temperature sampling gas collection all the way to realize
Bottle, or gas chromatographicanalyzer is exported to from high temperature sampling gas bottle.
Multichannel high temperature sampling gas bottle includes the stainless steel gas cylinder that multichannel volume is 50mL, and hot flow path electricity is wrapped up in gas cylinder periphery
Heating device is maintained at gas cylinder temperature near set temperature, and outermost layer wraps up heat-insulating material to keep the temperature and anti-scald.
Vacuum pumping pump to be evacuated near vacuum state for multichannel high temperature sampling gas bottle in advance, in order to the intraventricular pressure that burns
When strong lower, combustion of gaseous product can smoothly import sampling bottle by pressure difference, while also make pure noiseless gas in gas cylinder
Ingredient exists.
The digital controlled signal that method program exports is switched to corresponding voltage electric current letter by described automatically controlled and signal processing unit
Number, including ignition signal, combustion chamber import/exhaust signal, gas cylinder heating signal, vacuumize signal, while by target line on-off signal
Switch to the digital signal that computer can identify.
Compared with prior art, the present invention having the following advantages:
(1) make the collection opportunity of combustion of gaseous product can precise quantification；
(2) product being collected into can be stored in the short time.
(3) it allows scientific research personnel accurately to capture combustion of gaseous product process, and combustion product is saved, according to
The chemical examination of scientific research requirement extract；
(4) facilitate formula development and a kind of improved energetic material combustion of gaseous collection of products method and apparatus.
Detailed description of the invention
Below with reference to embodiment attached drawing, the invention will be further described:
Fig. 1 is collection system structural schematic diagram；
Wherein: G1 is internal flame gas bottle, and G2 is middle flame gas bottle, and G3 is flame envelope gas bottle, and vacuum flask is cladded with electric heating and protects
Temperature set；V1 is gas collection pipe solenoid valve, and V2, V4, V6 are gas bottle solenoid valve, and V3, V5, V7 are gas bottle hand valve, and V8 is exhaust
Pipeline electromagnetic valve, V9 are to vacuumize hand valve, and V10 is pressure reducing valve, and V11 is triple valve.
Fig. 2 is chamber structure figure；
Fig. 3 is that target line spacing determines method schematic diagram.
Wherein, for target line 0 away from ignition wire 10mm, target line 0 is long away from about 1/5 sample of target line 1；L1+L2=L, L are that flame head and the tail are long
Degree；The stable state combustion picture that L1, L2, L are obtained by high speed camera is chosen manually and converts to obtain according to Fig. 4.
Fig. 4 is the flame for demarcating high speed camera shooting, chooses flame envelope, middle flame, internal flame position manually, calculates target line 1,2,3
Relative position；
Fig. 5 is sampling process valve event timing diagram.
Wherein, the high level of 0~target of target line line 3 represents target line and does not blow, and low level represents target line and blown.Each valve
High level represents valve opening, and low level represents corresponding valve and closes.
Specific embodiment
As shown in Figure 1, a kind of trigger-type energetic material combustion of gaseous product collection system, includes at least: combustion chamber, distribution
Unit, sampling unit, automatically controlled and signal processing unit:
The combustion chamber, to provide the initial environment of sample burning, sidewall of combustion chamber is provided with side wall transparency window, side wall
The gas circuit via hole in gas circuit hole and sampling equipped with pressure regulation；There is opening in combustion chamber up and down, and under shed is equipped with containing conductive column
The Xia Kagai of group and crucible, upper opening is to adjust sample tap position.
The side wall transparency window shoots burned flame for high speed camera, and upper opening is cooperated to manually adjust sampling
Mouthful, make alignment targets line 1.
The conductive column group of the lower Ka Gai includes the conductive column to insulate with multichannel and entire combustion chamber and lower Ka Gai, is used
When hyperbaric environment in the combustion chamber, the inside and outside transmission target line on-off signal in combustion chamber and ignition signal.
The target line is divided into 4 tunnels from top to bottom, passes through energetic material, target line is blown when combustion face is passed through；0th road target
Line-spacing ignition wire distance fixation is set as 10mm；1st road target line is concordant with sampling mouth, is about the 1/ of sample overall length away from ignition wire length
5；3rd curb burning direction is high away from the flame that the 1st tunnel spacing is equal to combustion flame, and the 2nd tunnel is located at 3 section of target 1 and target, opposite position
It sets and calculates to obtain by method.
The distribution unit includes the surge flask of booster pump and connection combustion chamber pressure regulation gas circuit hole, for adjusting combustion chamber
Initial pressure, and play buffer function in combustion, gas circuit control is realized by electric signal drive magnetic valve.
The sampling unit is divided into sampling mouth, valve group, multichannel high temperature sampling gas bottle, vacuum pumping pump.
Sampling mouth is located inside the sampling gas circuit hole of combustion chamber, is small latus rectum metal copper pipe, sampling nozzle position is adjustable, manually
It is directed at the side of sample on crucible, it is concordant with 1 position of target line of sample；The other end of probe tube passes through chamber wall, is connected to
Valve group.
Valve group occupy between high temperature sampling gas bottle and sampling mouth, for what is provided according to method output and electronic control unit
Voltage signal drives high-speed electromagnetic valve, and burning Indoor Combustion gaseous products are imported into certain high temperature sampling gas collection all the way to realize
Bottle, or gas chromatographicanalyzer is exported to from high temperature sampling gas bottle.
Multichannel high temperature sampling gas bottle includes the stainless steel gas cylinder that multichannel volume is 50mL, and hot flow path electricity is wrapped up in gas cylinder periphery
Heating device is maintained at gas cylinder temperature near set temperature, and outermost layer wraps up heat-insulating material to keep the temperature and anti-scald.
Vacuum pumping pump to be evacuated near vacuum state for multichannel high temperature sampling gas bottle in advance, in order to the intraventricular pressure that burns
When strong lower, combustion of gaseous product can smoothly import sampling bottle by pressure difference, while also make pure noiseless gas in gas cylinder
Ingredient exists.
The digital controlled signal that method program exports is switched to corresponding voltage electric current letter by described automatically controlled and signal processing unit
Number, including ignition signal, combustion chamber import/exhaust signal, gas cylinder heating signal, vacuumize signal, while by target line on-off signal
Switch to the digital signal that computer can identify.
A kind of trigger-type energetic material combustion of gaseous collection of products method, it is characterized in that: including at least following steps:
1. obtaining combustion flame size and target line punch position；
Step (1): setting up high speed camera at transparent window, and combustion chamber inner axes position is put into ruler, and camera shoots 1 width
Picture obtains the conversion relation of pixel Yu practical ruler distance；Hereafter camera position remains stationary, until new calibration；
Step (2): energetic material puts on ignition wire and is put into combustion chamber and lights a fire, in steady-state combustion period (after being set as igniting
At least 1/5) sample is burnt, intercept the photo of number Zhang Hanyou flame, chooses flame envelope, middle flame, internal flame position manually in software,
In conjunction with the conversion relation of actual physical size and camera view pixel, the flame envelope, middle flame, internal flame actual physics for obtaining flame are opposite
Position；
Step (3): as shown in figure 4, through the above steps, determining L1, L2 distance of target line on energetic material sample；
Step (4): as shown in figure 3, being directed to sample to be tested, igniting wire hole is fixed along sample distance 10mm close to sample head end
For 0 position of target line, L0 (1/5 sample overall length) is taken to be set to 1 position of target line downwards along sample from 0 position of target line, from 1 position edge of target line
It is target line 2 that sample, which takes downwards L1, then taking L2 downwards from target line 2 is target line 3；
Step (5): above-mentioned distance is recorded in upper computer software, thus subsequent samples method will calculate burn rate.
Subsequent identical sample testing can directly execute step (4) and step (5), without repeating step (1) to step
(3)。
2. the preparation before sampling
(1) prepare energetic material sample, the relative position obtained according to above-mentioned steps drills and wears ignition wire and 3 targets
Line is fixed to burning Ka Gai, brings combustion chamber into；As shown in Fig. 2, lower card is covered with the conduction copper column with shell insulation, to fire
Burn indoor and outdoor transmitting target line on-off signal and initial firing current；
(2) be placed on the crucible of lower Ka Gai, bring combustion chamber into, due to sample tap position in a certain range adjustable, Cong Shangkai
Mouth manually adjusts sampling mouth, makes 1 position of target line for being directed at energetic material sample；The other end of probe tube passes through chamber wall, even
It is connected to valve group；
(3) sampling bottle is vacuumized and is heated, and referring to Fig. 1, is closed the first valve V1, is opened valve V2~V7, open V9, closes
V8 is closed, the 11st valve V11 is gone to exhaust outlet by the tenth valve V10 standard-sized sheet of pressure reducing valve；Using vacuum pumping pump by 3 gas bottles
It is evacuated to negative pressure, while being heated to 150 DEG C to gas bottle and keeping the temperature；V9 is closed, the outlet the 11st valve V11 is gone into gas-chromatography
Instrument.
3. igniting sampling
It gives combustion chamber charge to 1MPa (or other necessary pressure test points), lights a fire, combustion face will be burnt downwards one by one in parallel
Disconnected target line 0 is to target line 3；The level change signal that target line is blown switchs to digital signal by circuit and reaches computer, such as Fig. 5 timing
Shown in figure:
Starting ignition, combustion face, which is retired, blows target line 0, starts timing；
It recognizes target line 1 to blow moment, timing obtains t0；
Target line 1 is blown simultaneously, is proceeded as follows: (a) opening gas collection pipe solenoid valve the first valve V1 and internal flame gas collection
It is closed after bottle solenoid valve V2, duration t1；(b) the t2 time is waited；(c) exhaust valve V8 is opened, is closed after duration t3；
(d) implementing result is that internal flame gaseous products import G1, and exhaust pipeline residual gas；
Similarly, it is blown simultaneously in target line 2, executes step: (a) opening gas collection pipe solenoid valve the first valve V1 and internal flame collection
It is closed after gas cylinder solenoid valve V4, duration t1；(b) the t2 time is waited；(c) exhaust valve V8 is opened, is closed after duration t3；
(d) implementing result is that internal flame gaseous products import G2, and exhaust pipeline residual gas；
It is blown simultaneously in target line 3, executes step: (a) opening gas collection pipe solenoid valve the first valve V1 and internal flame gas bottle
It is closed after solenoid valve V6, duration t1；(b) the t2 time is waited；(c) exhaust valve V8 is opened, is closed after duration t3；(d)
Implementing result is that internal flame gaseous products import G3, and exhaust pipeline residual gas.
4. timing method
Target line 0 to the corresponding energetic material length of target line 1 is L0, burning time t0, thus obtain burn rate:
R=L0/t0(mm/s) (1)
In L1 and L2 burner interval, setting
t1、t3It is influenced by combustion chamber and gas bottle pressure difference and pipeline, valve effective drift diameter, air inlet t1No longer than pressure
Equilibration time；And it is directed to the system, effective promoting menstruation is definite value, if:
t1≤f(P) (4)
Rule of thumb, in combustion chamber 1MPa, gas bottle air inlet t1For 200ms, t2For the combustion chamber 100ms and gas bottle pressure
Therefore dynamic balance obtains empirical equation:
Wherein P is pressure (MPa).
Previous stage gaseous products need pipeline being vented t in pipeline in order to not influence rear sampling after sampling every time3
Time.It is about 10:3 according to gas bottle and pipeline dischargeable capacity, effective pipe latus rectum is identical, then evacuation time takes empirical value:
To make exhaust not influence front and back acquisition, setting exhaust and sampling interval t2:
t4、t5For redundancy time, have:
t4≥0&&t5≥0 (8)
Simultaneous formula (1) to (8) can obtain:
That is t1The maximum value for meeting above-mentioned equation group is taken, remaining time value is obtained according to formula (2) (3) (6) (7).
Timing method obtains t accordingly1、t2、t3、t4、t5, so far deriving terminates.
Host computer procedure is write according to the method described above, realizes the control of whole process.
5. gaseous products access
Such as Fig. 1, after gas collection, gas is stored in 150 DEG C of hot environments in gas bottle, can guarantee gas whithin a period of time
State component is identical when sampling with original.
It closes the first valve V1, close the 9th valve V9, V3, V5, V7, the tenth valve V10 are opened, because of the tenth valve of pressure reducing valve
Door V10 delivery outlet is set as 0.2MPa, and throughput is small, therefore the 11st valve V11 is exported and goes to exhaust outlet, program opening V2,
V8, internal flame gas bottle gas are slowly excluded from exhaust outlet, and other ingredients in evacuated tube, the 11st valve V11 goes to gas phase color again
Spectrometer, chromatograph starts operation at this time, and sample air is just pure internal flame combustion of gaseous product.
The gaseous products of G2, G3 gas bottle can be imported gas chromatographicanalyzer by the same manner.
Claims (7)
1. a kind of trigger-type energetic material combustion of gaseous product collection system, includes at least: combustion chamber, distribution unit, sampling are single
First, automatically controlled and signal processing unit:
The combustion chamber, to provide the initial environment of sample burning, sidewall of combustion chamber is provided with side wall transparency window, and side wall is equipped with
The gas circuit hole of pressure regulation and the gas circuit via hole of sampling；There is an opening in combustion chamber up and down, under shed be equipped with group containing conductive column and
The Xia Kagai of crucible, upper opening is to adjust sample tap position；
The side wall transparency window shoots burned flame for high speed camera, and upper opening is cooperated to manually adjust sample tap pair
Quasi- target line 1；
The conductive column group of the lower Ka Gai includes the conductive column to insulate with multichannel and entire combustion chamber and lower Ka Gai, is used for
In combustion chamber when hyperbaric environment, the inside and outside transmission target line on-off signal in combustion chamber and ignition signal；
The target line is divided into 4 tunnels from top to bottom, passes through energetic material, target line is blown when combustion face is passed through；0th road target line-spacing
Ignition wire distance fixation is set as 10mm；1st road target line is concordant with sampling mouth, is about the 1/5 of sample overall length away from ignition wire length；The
3 curb burning directions are high away from the flame that the 1st tunnel spacing is equal to combustion flame, and the 2nd tunnel is located at 3 section of target 1 and target, relative position by
Method calculates to obtain；
The distribution unit includes the surge flask of booster pump and connection combustion chamber pressure regulation gas circuit hole, for adjusting the first of combustion chamber
Beginning pressure, and buffer function is played in combustion, gas circuit control is realized by electric signal drive magnetic valve；
The sampling unit is divided into sampling mouth, valve group, multichannel high temperature sampling gas bottle, vacuum pumping pump；
Sampling mouth is located inside the sampling gas circuit hole of combustion chamber, is small latus rectum metal copper pipe, sampling nozzle position is adjustable, manual alignment
The side of sample on crucible, it is concordant with 1 position of target line of sample；The other end of probe tube passes through chamber wall, is connected to valve
Group；
Valve group occupy between high temperature sampling gas bottle and sampling mouth, the voltage for being provided according to method output and electronic control unit
Signal drives high-speed electromagnetic valve, and burning Indoor Combustion gaseous products are imported into certain high temperature sampling gas bottle all the way to realize, or
Gas chromatographicanalyzer is exported to from high temperature sampling gas bottle；
Multichannel high temperature sampling gas bottle includes the stainless steel gas cylinder that multichannel volume is 50mL, and hot flow path electric heating is wrapped up in gas cylinder periphery
Device is maintained at gas cylinder temperature near set temperature, and outermost layer wraps up heat-insulating material to keep the temperature and anti-scald；
Vacuum pumping pump to by multichannel high temperature sampling gas bottle be evacuated near vacuum state in advance, in order to burn intraventricular pressure by force compared with
When low, combustion of gaseous product can smoothly import sampling bottle by pressure difference, while also make pure noiseless gas componant in gas cylinder
In the presence of；
The digital controlled signal that method program exports is switched to corresponding voltage current signal by described automatically controlled and signal processing unit,
Including ignition signal, combustion chamber import/exhaust signal, gas cylinder heating signal, signal is vacuumized, while target line on-off signal being switched to
The digital signal that computer can identify.
2. a kind of trigger-type energetic material combustion of gaseous collection of products method, it is characterized in that: including at least following steps:
1. obtaining combustion flame size and target line punch position；
2. the preparation before sampling；
3. igniting sampling；
4. obtaining timing；
5. gaseous products access.
3. a kind of trigger-type energetic material combustion of gaseous collection of products method according to claim 2, it is characterized in that: described
Step 1 specifically include following process:
Step (1): setting up high speed camera at transparent window, and combustion chamber inner axes position is put into ruler, and camera shoots 1 width and draws
Face obtains the conversion relation of pixel Yu practical ruler distance；Hereafter camera position remains stationary, until new calibration；
Step (2): energetic material puts on ignition wire and is put into combustion chamber and lights a fire, steady-state combustion period (be set as igniting after sample
It burns at least 1/5), intercepts the photo of number Zhang Hanyou flame, choose flame envelope, middle flame, internal flame position manually in software, in conjunction with
The conversion relation of actual physical size and camera view pixel obtains the flame envelope, middle flame, internal flame actual physics of flame with respect to position
It sets；
Step (3): L1, L2 distance of target line on energetic material sample are determined；
Step (4): being directed to sample to be tested, and wire hole of lighting a fire is set to 0 position of target line along sample distance 10mm close to sample head end, from
0 position of target line takes downwards L0 (1/5 sample overall length) to be set to 1 position of target line along sample, takes along sample the L1 to be downwards from 1 position of target line
Target line 2, then taking L2 downwards from target line 2 is target line 3；
Step (5): above-mentioned distance is recorded in upper computer software, thus subsequent samples method will calculate burn rate；
Subsequent identical sample testing can directly execute step (4) and step (5), without repeating step (1) to step (3).
4. a kind of trigger-type energetic material combustion of gaseous collection of products method according to claim 2, it is characterized in that: described
Step 2 specifically include following process:
(1) prepare energetic material sample to drill according to the relative position that existing step obtains and wear ignition wire and 3 target lines, Gu
It is fixed to arrive burning Ka Gai, bring combustion chamber into；Lower card is covered with the conduction copper column with shell insulation, to transmit target line inside and outside combustion chamber
On-off signal and initial firing current；
(2) sampling mouth is manually adjusted from upper opening, makes 1 position of target line for being directed at energetic material sample；The other end of probe tube is worn
Chamber wall is crossed, valve group is connected to；
(3) sampling bottle is vacuumized and is heated, and referring to Fig. 1, is closed the first valve V1, is opened valve V2~V7, open V9, closes
V8, the tenth valve V10 standard-sized sheet of pressure reducing valve, goes to exhaust outlet for the 11st valve V11；3 gas bottles are taken out using vacuum pumping pump
To negative pressure, while 150 DEG C are heated to gas bottle and is kept the temperature；V9 is closed, the outlet the 11st valve V11 is gone into gas-chromatography
Instrument.
5. a kind of trigger-type energetic material combustion of gaseous collection of products method according to claim 2, it is characterized in that: described
Step 3 specifically include following process:
The initial pressure that combustion chamber charge burns to sample, generally no greater than 25 megapascal, igniting, combustion face will be burnt downwards one by one in parallel
Disconnected target line 0, target line 1, target line 2, target line 3；The level change signal that target line is blown switchs to digital signal by circuit and reaches calculating
Machine；
Starting ignition, combustion face, which is retired, blows target line 0, starts timing；
It recognizes target line 1 to blow moment, timing obtains t0；
Target line 1 is blown simultaneously, is proceeded as follows: (a) opening gas collection pipe solenoid valve the first valve V1 and internal flame gas bottle electricity
It is closed after magnet valve V2, duration t1；(b) the t2 time is waited；(c) exhaust valve V8 is opened, is closed after duration t3；(d) it holds
Row result is that internal flame gaseous products import G1, and exhaust pipeline residual gas；
Similarly, it is blown simultaneously in target line 2, executes step: (a) opening gas collection pipe solenoid valve the first valve V1 and internal flame gas bottle
It is closed after solenoid valve V4, duration t1；(b) the t2 time is waited；(c) exhaust valve V8 is opened, is closed after duration t3；(d)
Implementing result is that internal flame gaseous products import G2, and exhaust pipeline residual gas；
It is blown simultaneously in target line 3, executes step: (a) opening gas collection pipe solenoid valve the first valve V1 and internal flame gas bottle electromagnetism
It is closed after valve V6, duration t1；(b) the t2 time is waited；(c) exhaust valve V8 is opened, is closed after duration t3；(d) it executes
As a result G3 is imported for internal flame gaseous products, and exhausts pipeline residual gas.
6. a kind of trigger-type energetic material combustion of gaseous collection of products method according to claim 2, it is characterized in that: described
Step 4 specifically include following process:
Setting, target line 0 to the corresponding energetic material length of target line 1 is L0, burning time t0, thus obtain burn rate:
R=L0/t0(mm/s) (1)
In L1 and L2 burner interval, setting
t1、t3It is influenced by combustion chamber and gas bottle pressure difference and pipeline, valve effective drift diameter, air inlet t1No longer than pressure equilibrium
Time；And it is directed to the system, effective promoting menstruation is definite value, if:
t1≤f(P) (4)
Rule of thumb, in combustion chamber 1MPa, gas bottle air inlet t1For 200ms, t2It is flat for the combustion chamber 100ms and gas collection bottle pressure
Weighing apparatus, therefore, obtains empirical equation:
Wherein P is pressure (MPa)；
Previous stage gaseous products need pipeline being vented t in pipeline in order to not influence rear sampling after sampling every time3Time.
It is about 10:3 according to gas bottle and pipeline dischargeable capacity, effective pipe latus rectum is identical, then evacuation time takes empirical value:
To make exhaust not influence front and back acquisition, setting exhaust and sampling interval t2:
t4、t5For redundancy time, have:
t4≥0&&t5≥0 (8)
Simultaneous formula (1) to (8) can obtain:
That is t1The maximum value for meeting above-mentioned equation group is taken, remaining time value is obtained according to formula (2) (3) (6) (7)；
T is obtained accordingly1、t2、t3、t4、t5。
7. a kind of trigger-type energetic material combustion of gaseous collection of products method according to claim 2, it is characterized in that: described
Step 5 specifically include following process:
After gas collection, gas is stored in 150 DEG C of hot environments in gas bottle, closes the first valve V1, closes the 9th valve V9,
V3, V5, V7, the tenth valve V10 are opened, because the tenth valve V10 delivery outlet of pressure reducing valve is set as 0.2MPa, throughput is small, therefore will
11st valve V11 output goes to exhaust outlet, and program opens V2, V8, and internal flame gas bottle gas is slowly excluded from exhaust outlet, empties
Other ingredients in managing, the 11st valve V11 go to gas chromatograph again, and chromatograph starts operation at this time, and sample air is just
For pure internal flame combustion of gaseous product；
The gaseous products of G2, G3 gas bottle can be imported gas chromatographicanalyzer by the same manner.
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| CN201910716172.1A CN110470777B (en) | 2019-08-05 | 2019-08-05 | Trigger type energetic material combustion gaseous product collecting system and method |
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