CN106645281A - Lab high-temperature aging experiment system for gel state composite fuel - Google Patents
Lab high-temperature aging experiment system for gel state composite fuel Download PDFInfo
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- CN106645281A CN106645281A CN201710092389.0A CN201710092389A CN106645281A CN 106645281 A CN106645281 A CN 106645281A CN 201710092389 A CN201710092389 A CN 201710092389A CN 106645281 A CN106645281 A CN 106645281A
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- 230000032683 aging Effects 0.000 title claims abstract description 75
- 239000002131 composite material Substances 0.000 title abstract description 8
- 238000002474 experimental method Methods 0.000 title abstract description 3
- 239000000446 fuel Substances 0.000 title abstract 6
- 239000013307 optical fiber Substances 0.000 claims abstract description 40
- 238000012360 testing method Methods 0.000 claims abstract description 32
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 239000000835 fiber Substances 0.000 claims abstract description 21
- 238000012544 monitoring process Methods 0.000 claims abstract description 13
- 239000011521 glass Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 11
- 230000015556 catabolic process Effects 0.000 claims description 9
- 238000006731 degradation reaction Methods 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 5
- 230000009286 beneficial effect Effects 0.000 claims description 4
- 229920006332 epoxy adhesive Polymers 0.000 claims description 4
- 229920006335 epoxy glue Polymers 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- -1 polytetrafluoroethylene Polymers 0.000 claims description 2
- 238000010792 warming Methods 0.000 claims description 2
- 239000002360 explosive Substances 0.000 abstract description 16
- 230000008859 change Effects 0.000 abstract description 10
- GAPFWGOSHOCNBM-UHFFFAOYSA-N isopropyl nitrate Chemical compound CC(C)O[N+]([O-])=O GAPFWGOSHOCNBM-UHFFFAOYSA-N 0.000 abstract description 8
- 239000000843 powder Substances 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000003878 thermal aging Methods 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 description 20
- 239000002351 wastewater Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 10
- 239000007787 solid Substances 0.000 description 7
- 230000035508 accumulation Effects 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 241001269238 Data Species 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000007405 data analysis Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- IJMWOMHMDSDKGK-UHFFFAOYSA-N Isopropyl propionate Chemical compound CCC(=O)OC(C)C IJMWOMHMDSDKGK-UHFFFAOYSA-N 0.000 description 1
- 230000018199 S phase Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000003349 gelling agent Substances 0.000 description 1
- 239000011551 heat transfer agent Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000000985 reflectance spectrum Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000001073 sample cooling Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 230000002463 transducing effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/16—Investigating or analyzing materials by the use of thermal means by investigating thermal coefficient of expansion
Abstract
The invention discloses a lab high-temperature aging experiment system for gel state composite fuel, comprising a sealing tank, an opening type high-temperature aging system, and an optical fiber grid sensing system. The gel state composite fuel is placed in a sealing tank, a sensor of a fiber bragg grating is vertically embedded in the sample; an optical fiber end is connected with a demodulator, and the demodulator is connected with an industrial personal computer. The sealing tank is placed in the opening type high-temperature aging system to perform the aging test; the sensor collects the sample temperature and strain data in real time and draws up a monitoring curve, thus the temperature and strain change of the sample in the aging test can be observed. The system eliminates the explosive hidden trouble caused by heating and volatilizing isopropyl nitrate to air, and guarantees the safety of the thermal aging test of the el state composite fuel. The system monitors the temperature and strain change of the el state composite fuel aging sample in real time for the first time, and solves the problem that the sample information cannot be acquired timely for explosives and powders are under a 'black box' model in aging test. The invention is further used for the estimation of service life of the gel state composite fuel, and so on.
Description
Technical field
The invention belongs to the high temperature ageing examination of energetic material performance test and research field, mainly gel state cloud detonator
Test, especially the monitoring of ageing state of the gel state cloud detonator in high-temperature circulation test.
Background technology
Weaponry allows for ensureing that safe storage under various environmental conditions and reliability are used, if environmental suitability
Difference, is likely to result in huge potential safety hazard and economic loss.
Storage, transport and use state in any weaponry lifetime can be subject to various climatic environments and mechanical ring
The independent of border, combination and the effect of synthesis.These effects will necessarily make the material and structure of weaponry be corroded or be destroyed,
Part, equipment and electronic device performance degradation and malfunction are made, so as to affect its fighting efficiency, and military operation is ultimately resulted in
Failure.Meanwhile, the uncertain feature in the sudden and battlefield of modern war is also proposed to the environmental suitability of weaponry
Higher and higher requirement, in a sense, weaponry environmental suitability becomes restriction weapon performance, affects war
Carry out even determining the key factor of war win and defeat.U.S. Department of Defense shows in the special investigation that the sixties in 20th century is carried out：Ring
The damage of weaponry is caused in border, accounts for more than 50% damaged during whole use, has been exceeded operation and has been damaged；In stock's phase,
Environment causes the ratio damaged to account for the 60% of whole damage.In order to adapt to modern war growth requirement, it is desirable to which explosive wastewater should have
Preferably environmental suitability, can pass through Research on Environmental Test environmental suitability.
Explosive wastewater environmental test can be divided into Natural Environmental Test and laboratory accelerated aging test.The Natural Environmental Test cycle
Long, environmental factor is interfered with each other, comparatively laboratory accelerated aging test can by properly increase environmental stress level,
Proof stress type and scope, in the case where failure mechanism is constant, make sample quickly change, and the cycle is shorter.Furthermore examine
Consider the factors such as safety, cost, test simplicity, also select first to carry out little yardstick powder charge accelerated test in laboratory conditions, lead to
Cross and gradually amplify specimen size, carry out the equivalent simulation of little dimension samples and full size powder charge, be finally reached the reality by short-term
The little yardstick test in room is tested, the purpose of full size powder charge Natural Environmental Test is reacted.
China have studied the environmental suitability of many solid explosive wastewaters, particularly novel high-energy solid explosive wastewater, it is necessary to Jing
Cross laboratory accelerated aging test, with qualified environmental suitability after, just can come into operation.
Gel state cloud detonator is in the heterogeneous system of solid-liquid mixing, to add gelling agent, enables solid constituent stably
In being dispersed in liquid-phase system.Gel rubber system has certain thixotropy, and immobilising half can be kept when not acted on by external force
Solid state, when heating, pressurizeing or by shearing force, can flow as liquid.The appearance of gel state cloud detonator is later, does not have
There is nature ring to try data, and because itself is without more stable mechanical support, it is impossible to tested using existing laboratory environment
Case carries out degradation.
To ensure that gel state cloud detonator is reliably used and promoted in weapon model, it is badly in need of studying its environmental suitability, opens
Exhibition laboratory accelerated aging test, strives in the development stage by means such as optimization of C/C composites, adjusting processes, improves its environment and adapts to
Property.
In the environmental impact factor that various explosive wastewater life cycle managements are touched, impact of the high temperature to explosive wastewater is maximum,
Therefore the environmental suitability research of explosive wastewater typically can first carry out high-temperature circulation test.
When solid explosive wastewater carries out laboratory high-temperature circulation test, after the sealing of sample aluminium plastic bag commercially available high-temperature cabinet is placed on
Inside tested, be a closed little space in experimental box after chamber door is closed, sample is aging in a more stable temperature.
Sample in high-temperature cabinet is in a kind of "black box" state, takes out send laboratory to be detected at intervals of set time, obtains discontinuity
Data, it is impossible to accurately obtain the time point of aged samples performance mutation.Many times detected part has been different from examination
The time of day of sample in tryoff, causes some performance datas to obtain.Such as temperature and strain inside aged samples.Have
A little components containing energy are produced certain heat by thermal decomposition, because explosive wastewater is the non-conductor of heat, certain heat are had in sample
Accumulation, and heat accumulation catalysis containing can component decomposition, therefore much researcher is intended to obtain after explosive wastewater sample is heated
The change of internal temperature, these temperature datas can not possibly be obtained by offline inspection.Equally, it is internal after sample is heated to produce
Raw some strains, strain can cause structure to change, once but leave ageing oven, sample cooling, internal strain will be sent out
Changing, so the strain data that sample offline inspection is obtained, is in fact different with the strain in sample in ageing oven.Cause
This, what the temperature and strain data inside ageing process moderate heat explosive sample was missing from.
Mainly there are two problems to hamper the development of gel state cloud detonator laboratory high-temperature circulation test at present：
(1) danger that the component volatilization containing energy brings.Because gel state cloud detonator has certain thixotropy, itself mechanics
Poor-performing, it is impossible to environmental test chamber is put into using aluminium plastic bag sealing and is tested.This is because the component nitre containing energy in cloud detonator
Isopropyl propionate (liquid) has volatility, is easy to escape gel network in process of the test, due to gas expansion greatly, plastic-aluminum
Bag can be burst, and isopropyl nitrate is distributed in whole chamber and mixes with air, after reaching finite concentration, to external world slight
Stimulate all very sensitive, be very easy to burning and even explode, potential safety hazard is very big.So wanting the experiment for carrying out gel state cloud detonator
Room environmental is tested, and needs to develop the special purpose device for placing gel-state specimen.In addition a kind of opened type high temperature furnace is also studied, even if
Isopropyl nitrate is revealed also without limitation in a little space, it is not easy to reach explosion limit.
(2) truth of sample in ageing process can not be obtained.Estimate the sample interior after gel state cloud detonator is heated
Strain can be more than solid explosive wastewater, and inside heat accumulation produces the elevated phenomenon of temperature with other solid explosive wastewater samples after sample is heated
Product equally merit attention, and the two important performances are not capable of at present the means of real-time detection, and needing to develop can obtain old
The detection means of sample interior true temperature strain during change, the "black box" for making aged samples residing in ageing process is changed into
" camera-lucida ".
The present invention intends using the security during two kinds of means guarantee tests of hermetically sealed can and opened type high temperature ageing stove.Should
Hermetically sealed can guarantee that good seal during high temperature ageing, and the component isopropyl nitrate containing energy will not be revealed.If just in case having a little
Reveal, as a result of opened type high temperature ageing stove, the isopropyl nitrate of leakage can be diluted by surrounding air, it is not easy to be reached quick-fried
Fried concentration.
For above-mentioned Second Problem, the present invention intends static embedment fiber-optic grating sensor in the sample, to sample aging
During temperature, strain carry out real-time in-situ monitoring.
Fiber-optic grating sensor detection technique is the non-destructive monitoring technology for growing up in recent years, by extraneous physical parameter
Heat transfer agent is obtained to the modulation of optical fiber Bragg wavelength, is a kind of wavelength modulation fiber sensor.Optical fiber grating sensing
Device is mainly used in strain and temperature survey, with high resolution, reproducible, reliability be high, measuring point is more and the compatibility crowd such as by force
Many advantages, are capable of achieving stable long term monitoring.
In ordinary optic fibre, fiber core refractive index is allowed just to constitute the simplest uniform fiber grating of structure with mechanical periodicity,
Its sensing principle is that the light propagated in fiber core will reflect at each grating face, if Bradley glazing bar can not be met
(incident light is identical with reflection light frequency for part；Incident wave vector is equal to reflection wave vector with grating wavevector sum), it is arranged in order
Grating planar reflection light phase will gradually become difference to the last cancel out each other；If disclosure satisfy that Bradley glazing bar
Part, the light that each grating planar is reflected progressively adds up, and finally can reversely form a reflection peak, and centre wavelength is by optical fiber
Parameter is determined.I.e. fiber grating is substantially a kind of narrow band filter, and it reflects back the light in very narrow-band, and (reflectivity is reachable
More than 90%), and the light of remaining frequency band is just transmitted away.
Fiber Bragg grating (FBG) demodulator provides incident light source, real-time resolving fiber-optic grating sensor reflectance spectrum for Fibre Optical Sensor
Centre wavelength value, and real-time network transmission can be carried out, transfer data to industrial computer.
The unique advantage of fiber-optic grating sensor is as follows：
A () transducing head structure is simple, small volume, lightweight, shape variable, in being adapted to embedment large scale structure, measurable knot
Temperature, strain and structural damage inside structure etc., stability is high, reproducible.
There is natural compatibility between (b) and optical fiber, be easily connected with optical fiber, low-loss, spectral characteristic are good, reliability
It is high.
C () has non-conducting, affects little to measured medium, and the characteristics of with anticorrosive, electromagnetism interference, be adapted to
Work in adverse circumstances.
D () is light and handy soft, multiple gratings can be write in an optical fiber, sensor array is constituted, with wavelength-division multiplex and sky
Division multiplexing system combines, and realizes distributed sensing.
E () metrical information is Wavelength-encoding, so, fiber-optic grating sensor light-intensity variation, optical fiber company not by light source
Connect and coupling loss and optical polarization the factor such as change impact, have stronger antijamming capability.
(f) high sensitivity, high resolution.
At present, fiber grating sensing technology has been successfully applied in the middle of the Non-Destructive Testing of Aeronautics and Astronautics, while can be with
In the application of the fields such as geodynamics, chemical medicine, material industry, water conservancy and hydropower, nuclear power, ship, colliery, and in building work
The integrality and internal strain of structure are determined in concrete segment and structure in journey.Gel state cloud detonator belongs to gel state material
Material, can produce strain after being heated, the decomposition of components containing energy therein can cause indivedual place heat accumulations and temperature is raised, and can make optical fiber
Grating temperature, strain transducer produce response.
The content of the invention
To ensure that gel state cloud detonator is reliably used and promoted in weapon model, the reality for carrying out gel state cloud detonator is needed
Room high-temperature circulation test technical research is tested, reaching can be with optimization of C/C composites, the purpose of adjusting process in the development stage.The present invention will be solved
Technical problem certainly is, for hazards and degradation present in the high-temperature circulation test of gel state cloud detonator laboratory
During sample cannot obtain the defect of continuous data in "black box" state, there is provided it is high that one kind can be used for gel state cloud detonator
Warm degradation system, this system can in real time obtain the temperature-strain data of sample in ageing process.
The gel state cloud detonator laboratory high temperature ageing experimental system that the present invention is provided, by hermetically sealed can, opened type high temperature
Ageing system, fiber grating sensing system composition.It is characterized in that：The hermetically sealed can mainly includes glass reactor, tank body, lid
The components such as son, fixing nut, sealing ring.Described tank body is the cylinder of upper open-ended, and upper end outer ring has outwardly
Outer retainer plate, is distributed 6 equidistant fixation through holes, along 3mm lower than outer retainer plate upper surface in tank body upper end on outer retainer plate.
Described glass reactor is the cylinder of upper open-ended, external diameter 2～4mm more slightly smaller than tank body internal diameter, highly than in tank body along low by 2
～3mm.Described lid is that, with certain thickness disk, external diameter is equal with tank body upper end retainer plate external diameter, and central authorities penetrate
There are 6 that penetrate lid equidistant fixation through holes the detection hole of lid, border, and through-hole diameter is slightly larger than outside the screw rod of fixing nut
Footpath.Lid inner ring plane downward thickness 2mm more than the thickness of outer ring.Sealing ring thickness about 1.5mm, is placed on edge in tank body upper end, then
Lid is put on tank body, lid outer ring just coincide with the retainer plate of tank body, and lid inner ring coincide with the interior edge of tank body, 6 groups
It is fixed to tighten 6 clamp nuts so that be fitted close between lid and tank body with through hole correspondence, realize sealing.Described high temperature
Ageing system is made up of opened type high temperature ageing stove and control system, can complete high temperature ageing stove heat silk by control system
It is powered and power-off.The high temperature ageing stove is made up of shell, heat-insulation layer, heater strip, metal derby, bottoming hole, temperature sensor etc..
Metal derby is cylinder, and cylindrical side is carved with the shallow slot of turn-taking with axis of a cylinder as the center of circle, and heater strip is placed on cylindrical side in shallow slot
One encloses the winding of spiral formula.The metal derby entirety outer surface for winding heater strip is wrapped in respectively from inside to outside insulation
Layer, shell.Plane is circumferentially uniformly distributed 8 bottoming holes on ageing oven, and bottoming hole is by upper plane down in metal derby
Portion.Bottoming hole is divided into upper and lower two cylinders, upper cylinder 3～4mm bigger than the diameter of lid, highly as clamp nut height.
Height (without the outer retainer plate height) 3～4mm more of the lower cylinder depth ratio tank body of bottoming hole, internal diameter is bigger than tank body external diameter by 6～
8mm, but it is significantly less than the diameter of lid so that tank body is put into after bottoming hole, and tank body can leave with bottoming hole bottom and side
The space of 3mm or so, beneficial to the mixing of air around tank body.Bottoming hole bottom surface is equipped with temperature sensor.Under ageing oven
Side, power electric and temperature signal equipped with conducting ring, can be come into from inside and outside ageing oven and be spread out of.Described optical fiber grating sensing system
System is made up of fiber-optic grating sensor, optical fiber, (FBG) demodulator, industrial computer.(FBG) demodulator is connected by netting twine with industrial computer, industrial computer dress
Have optical fiber grating temperature and strain sensing system real-time monitoring software, optical fiber grating temperature and strain sensing SDA system data analysis with
The poster processing soft.Sample is placed in glass reactor during test, and glass reactor is placed in tank body, and sensor is vertically buried vertically
In the sample, sealing ring is placed in tank body upper end along upper, and optical fiber draws hermetically sealed can from detection hole, and lid is placed on tank body, makes lid
6 fixing holes of sub- border are corresponding with the 6 of tank body fixing holes, tighten 6 clamp nuts, tank body and lid is closely connected,
Hermetically sealed can assembling is finished；The space between hole and optical fiber is detected with epoxy glue seal, whole hermetically sealed can is vertically stood into 12 hours
More than, make epoxy adhesive curing；Optical fiber is connected to into fiber Bragg grating (FBG) demodulator；Opened type high temperature ageing stove is risen to into aging temperature, it is close
Sealed cans are put in bottoming hole, start temperature and the strain for monitoring sample, and the temperature strain signal of acquisition passes through network cable transmission to work
Control machine, by industrial computer Real-time Collection temperature and strain data, is depicted as monitoring curve, it was observed that sample is aging in hermetically sealed can
The change of temperature and strain in test.
In the present invention, fiber Bragg grating strain sensor, TEMP of the chosen wavelength range in 1510～1590nm or so
Device, 1 temperature sensor and 1 strain transducer constitute a sensor pair, and using optical fiber splicer same will be connected on
On optical fiber, can be according to position need to be monitored on an optical fiber, 1～2 sensor pair of connecting.
In the present invention, the size of each part can be adjusted suitably in system, but should ensure that between glass reactor and inner tank wall,
There is a little space between tank body and bottoming hole, and hermetically sealed can sealing is good.
In the present invention, material used by lid, tank body, clamp nut is 316 stainless steels, and sealing ring material is polytetrafluoroethyl-ne
Alkene.
Beneficial effects of the present invention are embodied in the following aspects：
(1) good sealing effect of the present invention, the material isopropyl nitrate containing energy of the volatility in gel state cloud detonator is difficult to reveal.
In addition, employ opened type high-temperature heater, just in case there is a little isopropyl nitrate to be leaked in air, due to space it is larger, no
Easily accumulation reaches the explosion ratio of isopropyl nitrate.Two kinds of measures increased the process safety of gel state cloud detonator degradation
Property.
(2) in the past in explosive wastewater degradation, using periodically sampling offline inspection, due to leaving ageing environment after, sample
Temperature and strain after suffering from cold changes again, it is impossible to obtain True Data of the sample under ageing state so that sample is old
The state changed in case is "black box" state.The method that the present invention imbeds sample using fiber-optic grating sensor, first can be real-time
The change of the temperature-strain of detection gel state cloud detonator aged samples so that sample is in " camera-lucida " state in ageing oven, obtains
Contain much information, accurately.
(3) present invention can according to demand carry out dimensioned, can proceed by from the gel state cloud detonator of smaller dose
Test, can be preferably minimized danger, be particularly suitable for the formula development stage.
(4) present invention can be additionally used in gel state cloud detonator life prediction, environmental suitability evaluation, powder charge restricting condition for use
Or control, charge constitution design and security control, powder charge length storage safety evaluatio, long storage ageing process performance monitoring etc..
(5) present invention may further be used to carry out the high-temperature circulation test of other gel-state specimens.
Description of the drawings
Fig. 1 is that gel state cloud detonator laboratory high temperature ageing experimental system totally constitutes schematic diagram.
Fig. 2 is that hermetically sealed can constitutes schematic diagram.
Fig. 3 is to be put into sample to have buried the hermetically sealed can schematic diagram that sensor group is installed.
Fig. 4 is that opened type high temperature ageing stove constitutes schematic diagram.
Specific embodiment
Below in conjunction with the accompanying drawings and preferred embodiment the present invention is described in further detail.
As shown in figure 1, the gel state cloud detonator laboratory high temperature ageing experimental system that the present invention is provided, comprising sealing
Tank, opened type high temperature ageing system, fiber grating sensing system etc..According to Fig. 2, hermetically sealed can mainly includes glass reactor 1, tank
The components such as body 2, lid 6, fixing nut 8, sealing ring 4.Described tank body 2 is the cylinder of upper open-ended, and upper end outer ring has
Outer retainer plate outwardly, be equally spaced 6 fixation through holes 3 on outer retainer plate, along 7 than outer retainer plate in tank body upper end
The low 3mm in upper surface.Described glass reactor 1 is the cylinder of upper open-ended, and external diameter 2～4mm more slightly smaller than the internal diameter of tank body 2 is high
Degree is interior than tank body 2 along 7 low 2～3mm.Described lid 6 is with certain thickness disk, external diameter and the upper end retainer plate of tank body 2
External diameter is equal, and there is the detection hole 9 for penetrating lid in central authorities, and there are 6 that penetrate lid equidistant fixation through holes 5, the diameter of through hole 5 in border
Slightly larger than the nut external diameter of fixing nut 8, outer screw diameter of the lower cylinder diameter slightly larger than fixing nut 8.The inner ring plane of lid 6
Downward thickness 2mm more than the thickness of outer ring.The thickness about 1.5mm of sealing ring 4, is placed in the upper end of tank body 2 along 7, then lid 6 is put into into tank
On body 2, the outer ring of lid 6 just coincide with the retainer plate of tank body 2, and the inner ring of lid 6 coincide with the interior of tank body 2 along 7, and 6 groups of fixations are used
The correspondence of through hole 5 and 3, tightens 6 clamp nuts 8 so that be fitted close between lid 6 and tank body 2, realizes sealing.Described height
Warm ageing system is made up of opened type high temperature ageing stove and control system, and the heater strip 15 of ageing oven can be completed by control system
Energization and power-off.As shown in figure 4, high temperature ageing stove is by shell 13, heat-insulation layer 14, heater strip 15, metal derby 16, bottoming hole
17th, the composition such as temperature sensor 18.Metal derby 16 is cylinder, and cylindrical side is carved with the shallow slot of turn-taking with axis of a cylinder as the center of circle, plus
Heated filament 15 is placed in shallow slot and for cylindrical side one to enclose the winding of spiral formula.The metal derby 16 for winding heater strip 15 is overall
Outer surface is wrapped in respectively from inside to outside heat-insulation layer 14, shell 13.Plane is circumferentially uniformly distributed 8 bottoming holes 17 on ageing oven
Down into inside metal derby.17 points of bottoming hole is upper and lower two cylinders, and upper cylinder 3～4mm bigger than the diameter of lid 6 is high
Degree is as the height of clamp nut 8.The height (without outer retainer plate height) more 3 of the lower cylinder depth ratio tank body 2 of bottoming hole 17
～4mm, internal diameter 6～8mm bigger than the external diameter of tank body 2, but it is significantly less than the diameter of lid 6 so that tank body 2 is put into after bottoming hole 17,
Tank body 2 can leave the space of 3mm or so with the bottom of bottoming hole 17 and side, beneficial to the mixing of air.The bottom of bottoming hole 17
Face is equipped with temperature sensor 18.Below ageing oven, equipped with conducting ring 19, can be by power electric and temperature signal from ageing oven
Come into outward and spread out of.Described fiber grating sensing system is by fiber-optic grating sensor (10,11), optical fiber 12, (FBG) demodulator, industrial computer
Composition.(FBG) demodulator is connected by netting twine with industrial computer, and industrial computer is equipped with optical fiber grating temperature and strain sensing system real-time monitoring
Software, optical fiber grating temperature and strain sensing SDA system data analysis and the poster processing soft.Sample is placed on glass reactor 1 during test
In, glass reactor 1 is placed in tank body 2, and sensor (10,11) is vertically buried vertically in the sample, and sealing ring 4 is placed on tank body 2
In upper end along 7, optical fiber 12 draws hermetically sealed can from detection hole 9, and lid 6 is placed on tank body 2, makes 6 fixing holes of the border of lid 6
5 is corresponding with 6 fixing holes 3 of tank body 2, tightens 6 clamp nuts 8, tank body 2 and lid 1 is closely connected, and hermetically sealed can has been assembled
Finish, as shown in Figure 3；The space between hole 9 and optical fiber 12 is detected with epoxy glue seal, whole hermetically sealed can is vertically stood into 12 hours
More than, make epoxy adhesive curing；Optical fiber 12 is connected to into fiber Bragg grating (FBG) demodulator；Opened type high temperature ageing stove is risen to into aging temperature,
Hermetically sealed can is put in bottoming hole 17, starts temperature and the strain for monitoring sample, and the temperature strain signal of acquisition passes through network cable transmission
To industrial computer, by industrial computer Real-time Collection temperature and strain data, monitoring curve is depicted as, it was observed that sample exists in hermetically sealed can
The change of temperature and strain in degradation.
The high temperature ageing status monitoring process of the preferred embodiment of the present invention is described below by example.
First, choose lower end external diameter 40mm, upper end external diameter 56mm, outer high 158mm, the tank body 2 of wall thickness 5mm, outer ring thickness
The lid 6 of 8mm, detection bore dia 4mm, external diameter 40mm, internal diameter 30mm, the sealing ring 4 of thickness 1.5mm.Remaining fitting dimension with
It is supporting.Tank body 2, lid 6, material used by clamp nut 8 are 316 stainless steels, and the material of sealing ring 4 is polytetrafluoroethylene (PTFE).
Second, using optical fiber splicer by multiple sensor series on same optical fiber 12,1 He of temperature sensor 10
1 strain transducer 11 constitutes 1 sensor pair.Height of specimen about 130mm after due to being put into glass reactor 1, therefore altogether
2 sensors pair need to be placed, spacing 40mm is respectively used to monitor the aging conditions of upper and lower two parts of sample.
3rd, sample is put in glass reactor 1, and the space of 10mm is left on top, it is ensured that when the sample that is heated fully expands
Surface does not contact with lid 6 and sealing ring 4；During sample is put into reactor 1, by above-mentioned series connection fiber bragg grating sensor
Along the central axial embedment sample interior of reactor 1；Reactor 1 is put into tank body 2, and sealing ring 4 is placed in the upper end of tank body 2 along 7, lid
Son 6 is placed on tank body 2, and optical fiber 12 is drawn from detection hole 9；Make 6 fixing holes 5 of the border of lid 6 and 6 fixing holes 3 of tank body 2
Correspondence, tightens 6 clamp nuts 8, tank body 2 and lid 6 is closely connected, and hermetically sealed can assembling is finished (see Fig. 3).In assembling process
It should be noted that keeping reactor 1 vertically, prevent sample from flowing out.
4th, the space between hole 9 and optical fiber 12 is detected with epoxy glue seal, hermetically sealed can is vertically placed 12 hours, make
Epoxy adhesive curing.
5th, opened type high temperature ageing stove is warming up to into aging temperature, the material of metal derby 16 is aluminium in ageing oven.
6th, optical fiber 12 is connected on sm130 optical fiber grating sensing demodulators, industrial computer is opened, it is equipped with industrial computer
Data management software ENLIGHT, 1510～1590nm of chosen wavelength range, sweep speed 2Hz.
7th, the above-mentioned hermetically sealed being cured is put in the bottoming hole 17 of ageing oven carries out degradation (see Fig. 1), real
When monitor aged samples temperature, strain data, obtain temperature, strain versus time curve.
Claims (4)
1. gel state cloud detonator laboratory high temperature ageing experimental system, comprising hermetically sealed can, opened type high temperature ageing system, optical fiber
Grating sensing system.It is characterized in that：The hermetically sealed can mainly includes glass reactor [1], tank body [2], lid [6], fixation
The components such as nut [8], sealing ring [4].Described tank body [2] is the cylinder of upper open-ended, and upper end outer ring has outwardly
Outer retainer plate, on outer retainer plate be distributed 6 equidistant fixed through holes [3], in tank body upper end edge [7] than outer retainer plate upper end
The low 3mm in face.Described glass reactor [1] is the cylinder of upper open-ended, and external diameter 2～4mm more slightly smaller than tank body [2] internal diameter is high
Degree 2～3mm lower than edge [7] in tank body [2].Described lid [6] is with certain thickness disk, on external diameter and tank body [2]
End retainer plate external diameter is equal, and there is the detection hole [9] for penetrating lid in central authorities, and there are 6 that penetrate lid equidistant fixation through holes border
[5], outer screw diameter of through hole [5] diameter slightly larger than fixing nut [8].The downward thickness of lid [6] inner ring plane is than outer ring thickness
Many 2mm.Sealing ring [4] thickness about 1.5mm, is placed in tank body [2] upper end along [7], then lid [6] is put on tank body [2], covers
Sub [6] outer ring just coincide with the retainer plate of tank body [2], and lid [6] inner ring coincide with the interior edge [7] of tank body [2], and 6 groups are fixed
With through hole [5] and [3] correspondence, 6 clamp nuts [8] are tightened so that be fitted close between lid [6] and tank body [2], realize close
Envelope.Described opened type high temperature ageing system is made up of opened type high temperature ageing stove and control system, can be complete by control system
The energization and power-off of heater strip [15] in opened type high temperature ageing stove.The opened type high temperature ageing stove is by shell [13], guarantor
Warm layer [14], heater strip [15], metal derby [16], bottoming hole [17], temperature sensor [18] etc. are constituted.Metal derby [16] is circle
Cylinder, cylindrical side is carved with the shallow slot of turn-taking with axis of a cylinder as the center of circle, and heater strip [15] is placed in shallow slot and for cylindrical side one to enclose one
The formula winding of circle spiral.Metal derby [16] the entirety outer surface for winding heater strip [15] is wrapped in respectively from inside to outside insulation
Layer [14], shell [13].Plane is circumferentially uniformly distributed 8 bottoming holes [17] on ageing oven, bottoming hole [17] from upper plane to
Under to be deep into metal derby [16] internal.Bottoming hole [17] is divided into upper and lower two cylinders, and upper cylinder is bigger by 3 than the diameter of lid [6]～
4mm, highly as clamp nut [8] height.The lower cylinder depth ratio tank body [2] (not containing upper retainer plate) of bottoming hole [17]
Height many 3～4mm, internal diameter 6～8mms bigger than tank body [2] bottom external diameter, but it is significantly less than the diameter of lid [6] so that tank body
[2] after putting bottoming hole [17] into, tank body [2] can leave the space of 3mm or so with bottoming hole [17] bottom and side, beneficial to tank
The mixing of air around body [2].Bottoming hole [17] bottom surface is equipped with temperature sensor [18].Below ageing oven, equipped with leading
Electric ring [19], power electric and temperature signal can be come into spread out of from inside and outside ageing oven.Described fiber grating sensing system by
Fiber-optic grating sensor [10,11], optical fiber [12], (FBG) demodulator, industrial computer composition.(FBG) demodulator is connected by netting twine with industrial computer,
Industrial computer is equipped with optical fiber grating temperature and strain sensing system real-time monitoring software, optical fiber grating temperature and strain sensing system number
According to analysis and the poster processing soft.Sample is placed in glass reactor [1] during test, and glass reactor [1] is placed in tank body [2],
Sensor [10,11] is vertically buried vertically in the sample, and sealing ring [4] is placed in tank body [2] upper end on [7], optical fiber [12]
Hermetically sealed can is drawn from detection hole [9], lid [6] is placed on tank body [2], makes 6 fixing holes [5] and the tank body of lid [6] border
[2] 6 fixing holes [3] correspondence, tightens 6 clamp nuts [8], tank body [2] and lid [6] is closely connected, hermetically sealed can group
Install complete；Detect the space between hole [9] and optical fiber [12] with epoxy glue seal, by whole hermetically sealed can vertically standing 12 hours with
On, make epoxy adhesive curing；Optical fiber [12] is connected to into fiber Bragg grating (FBG) demodulator；Opened type high temperature ageing stove is warming up to into aging temperature
Degree, by hermetically sealed can bottoming hole [17] is put into, and starts temperature and the strain for monitoring sample, and the temperature strain signal of acquisition passes through netting twine
Industrial computer is transferred to, by industrial computer Real-time Collection temperature and strain data, monitoring curve, sample in observation hermetically sealed can is depicted as
Temperature and strain variation in degradation.
2. gel state cloud detonator high temperature ageing experimental system according to claim 1, it is characterised in that：Select wavelength model
It is trapped among fiber Bragg grating strain sensor [11], the temperature sensor [10] of 1510～1590nm or so, 1 temperature sensor [10]
A sensor pair is constituted with 1 strain transducer [11], will be connected over the same fiber using optical fiber splicer, a light
Can be according to position need to be monitored on fibre, 1～2 sensor pair of connecting.
3. gel state cloud detonator high temperature ageing experimental system according to claim 1, it is characterised in that：Each zero in system
The size of part can be adjusted suitably, but be should ensure that between glass reactor [1] and tank body [2] inwall, between tank body [2] and bottoming hole [17]
There is a little space, and hermetically sealed can sealing is good.
4. gel state cloud detonator high temperature ageing experimental system according to claim 1, it is characterised in that：Lid [6], tank
Body [2], material used by clamp nut [8] are 316 stainless steels, and sealing ring [4] material is polytetrafluoroethylene (PTFE).
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| CN113188905A (en) * | 2021-04-13 | 2021-07-30 | 西安航天动力技术研究所 | Laminated rubber shock-insulation support health monitoring method based on optical fiber sensor |
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| CN107255649A (en) * | 2017-06-06 | 2017-10-17 | 廊坊立邦涂料有限公司 | Detection means and detection method that a kind of automobile sealed adhesive tape influences on Automotive Paint Film Properties |
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| CN109946334B (en) * | 2019-01-29 | 2021-06-15 | 西安近代化学研究所 | Device and method for detecting high-temperature threshold value of gel-state cloud blasting agent storage |
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| CN110095494A (en) * | 2019-06-04 | 2019-08-06 | 西安近代化学研究所 | A kind of large scale pressed explosives column temperature cycle threshold detection device and method |
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| CN112595656A (en) * | 2020-12-09 | 2021-04-02 | 中国兵器工业第五九研究所 | Testing device and evaluation method for adaptability of explosive device long-storage environment for bomb |
| CN112595656B (en) * | 2020-12-09 | 2022-05-27 | 中国兵器工业第五九研究所 | Testing device and evaluation method for adaptability of explosive device long-storage environment for bomb |
| CN113188905A (en) * | 2021-04-13 | 2021-07-30 | 西安航天动力技术研究所 | Laminated rubber shock-insulation support health monitoring method based on optical fiber sensor |
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