CN105651810A - Pipeline system for recording detonation inner structure and method of pipeline system - Google Patents
Pipeline system for recording detonation inner structure and method of pipeline system Download PDFInfo
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- CN105651810A CN105651810A CN201511024396.4A CN201511024396A CN105651810A CN 105651810 A CN105651810 A CN 105651810A CN 201511024396 A CN201511024396 A CN 201511024396A CN 105651810 A CN105651810 A CN 105651810A
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- 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
- G01N25/50—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility
- G01N25/54—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility by determining explosibility
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Abstract
The invention provides a pipeline system for recording a detonation inner structure and an experiment method. The pipeline system comprises a testing main body pipe, smoking glass, a smoke film and a slotting flange, wherein the tail end of the testing main body pipe is connected with the slotting flange and is provided with a rubber sealing ring; the smoking glass is aligned with the tail end in a vacuumizing process; a smooth surface of the smoking glass and a contact surface of the rubber sealing ring are used for guaranteeing extremely good sealing between the glass and the rubber sealing ring by using a pressure difference between inside and outside of a pipeline. Only the central part of the smoking glass keeps the size which is the same as the inner diameter of the pipeline, and other parts of the smoking glass need to be wiped cleanly by alcohol, so that sealing is not influenced. Meanwhile, the smoke film is arranged on an inner pipe wall and the width of the smoke film is equal to the perimeter of the inner diameter of the pipeline; after an experiment is finished, the glass at the tail end is taken off, and an inner transverse wave track is recorded by the smoking glass when transverse waves reach the position. A transverse wave structure result is detonated. The pipeline system for recording the detonation inner structure and the experiment method, provided by the invention, have the beneficial effects of simple structure, convenience for utilization and capability of clearly recording a detonation surface structure.
Description
Technical field
The present invention relates to detonation structure and the research of detonation communication form, be specifically related to a kind of tubing recording detonation internal structure and method thereof.
Background technology
Document 1(Han Gui comes, Jiang Zonglin, Zhang Deliang. the numerical simulation study [J] that shock wave clashes with detonation wave. and mechanics journal, 2008,40 (2): 154-161.) point out that self-holding detonation wave generally all has the three dimensional structure of complexity, it is called mach reflection. And spiral detonation be in pipe modulus be born of the same parents' lattice of. Smoked cigarette film is used also to become main detonation phenomena research means to the mach reflection recording detonation. It practice, be looped around on the cigarette film of tube wall only to have recorded the path of three wave point processes on outer ring, detonation face. Because the research major part of detonation structure is all that the spiral detonation structure to tube wall place is studied by the restriction of experimental technique, but in-house development rule is rare relates to for it. Wanting to determine from tube wall remotely near the leading shock surface shape of pipe axle, cigarette film can being perpendicular to pipe axle and place, such detonation face can be reflected on this cigarette film. But how by unclear up to now for this complex process on end face cigarette face of the shock interaction record from spiral reflection of detonation wave. End face cigarette film have recorded how folding line extends internally from wall towards pipe axle. On end face cigarette film, the fine structure of display is to cause through the reactant of shock wave compression owing to reflected shock wave is inswept, and these reactants are in the induction district at folding line incident shock rear. Document 2(Voitsekovskii, B.V., V.V.Mitrofanov, andM.Ye.Topchiyan.1966. " Thestructureofadetonationfrontingases. " Englishtranslation, WrightPattersonAirForceBase) attempt providing the transversal wave movement of spiral detonation face single head, double end and four-start spiral pinking, but the spiral detonation for higher frequency, describing transversal wave movement will be extremely difficult through detonation face, needing the support of experimental result, the structure how recording detonation face clearly is the problem of highly desirable solution.
Summary of the invention
In order to solve the problems referred to above, it is an object of the invention to provide a kind of simple in construction, easy to use, can clearly record tubing and the method thereof of the record detonation internal structure of detonation face structure.
Technical scheme: a kind of tubing recording detonation internal structure, this tubing includes test subject pipe, sootiness glass, cigarette film and fluting flange;
Wherein, flange seal is passed through in one end of described test subject pipe, the other end of described test subject pipe is provided with described fluting flange, the tube wall of described test subject pipe has the some through holes for installation detecting device, described through hole is equipped with probe installing stopper, the inside of described test subject pipe arranges described cigarette film near described fluting flange one end, and the height of described cigarette film is equal to the internal diameter of described test subject pipe, described sootiness glass is arranged on plank, buffering sponge it is provided with between described sootiness glass and plank, described sootiness glass, fixed by stationary fixture between described plank and described fluting flange three, it is provided with seal with elastometic washer between the contact surface of described fluting flange and described sootiness glass.
Further, described detecting device includes single-chip microcomputer and probe or sensor, and described probe or sensor are arranged in described through hole, and described single-chip microcomputer is connected with described probe or sensor by data wire.
Further, described test subject pipe is that rustless steel is made, and its internal diameter is at 50.8mm-1000mm.
Further, the width of described cigarette film is less than or equal to the internal diameter girth of described test subject pipe.
Further, the thickness of described sootiness glass is 4-6mm.
The method that another object of the present invention is to provide the tubing using above-mentioned record detonation internal structure to be recorded, specifically includes following steps:
Test subject pipe two ends are sealed by step 1., check the sealing of test subject pipe, flange seal is passed through in one end of test subject pipe, opposite side end puts into cigarette film, ensure that in placement process, cigarette film is without spin, the other end at test subject pipe installs fluting flange, is placed on plank by sootiness glass;
Step 2: prepared composition is 2H2+O2The premix gas of+50%Ar and C2H2-O2Ignition gas, stand 24 hours abundant premixs;
Step 3: the test subject pipe after step 1 is assembled starts evacuation, the smoke puff of sootiness glass is directed at test subject pipe and is provided with in the distal opening of fluting flange, sootiness glass can be pressed in rubber seal by the pressure differential that now flexibility of rubber seal pipeline internal and external reasons evacuation in addition produces, then proceed to evacuation, use clip plank, buffering sponge, sootiness glass and fluting flange to be fixed, be filled with ignition gas C2H2-O2And experimental gas 2H2+O2+ 50%Ar, igniting, detonation terminates rear evacuation, steadily put into air slowly, buttress plank, dismantle clip, take down plank and leave the sootiness glass of track, take out the cigarette film leaving track, cigarette film result and sootiness glass result are scanned, namely obtains the structure in the detonation face that records clearly of this experimental gas, in Detonation Experiments process, by the probe on test subject pipe or detonation face time of advent under sensor record, bonding probes position calculation goes out detonation rate.
Described internal structure record experimental system, apply to different premix gas Detonation Experiments under different initial condition, the thickness of glass is adjusted when initial pressure changes, the glass that glass thick for 4mm is only applicable to initial pressure thick lower than 8kPa, 6mm can meet the initial pressure experiment not higher than 15kPa.
The invention has the beneficial effects as follows: owing to adopting technique scheme, the tubing of the present invention is easy for installation, being conveniently adjusted, experimental technique is applicable to initial pressure condition and premix gas kind widely, provides the detonation internal structure being easy to record clearly reliably.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation recording detonation internal structure record tubing of the present invention.
Fig. 2 is the generalized section of main body testing tube.
Fig. 3 is experiment cigarette film and the glass smoke puff result schematic diagram of the present invention.
Fig. 4 is the schematic diagram of sootiness glass preparation.
In figure:
1-8, probe installing stopper; 9, test subject pipe; 10, cigarette film; 11, fluting flange; 12, sootiness glass; 13, buffering sponge; 14, plank; 15, rubber ring; 16, stationary fixture; 17, detonation internal structure track; 18, detonation tube wall track; 19, sootiness region; 20, covering; 21, filter screen; 22, kerosene lamp; 23, probe or sensor; 24, single-chip microcomputer.
Detailed description of the invention
Below in conjunction with accompanying drawing and example, technical scheme is described further.
As shown in Figure 1-2 for a kind of structural representation recording detonation internal structure record tubing of the present invention, this tubing includes test subject pipe, sootiness glass, cigarette film and fluting flange;
Wherein, flange seal is passed through in one end of described test subject pipe, the other end of described test subject pipe is provided with described fluting flange, the tube wall of described test subject pipe has the some through holes for installation detecting device, described through hole is equipped with probe installing stopper, the inside of described test subject pipe arranges described cigarette film near described fluting flange one end, and the height of described cigarette film is equal to the internal diameter of described test subject pipe, described sootiness glass is arranged on plank, buffering sponge it is provided with between described sootiness glass and described plank, the sootiness glass being arranged on described plank is fixed by clip and described fluting flange, it is provided with rubber ring between described fluting flange and described sootiness glass contact face, this system also includes detecting device, described detecting device includes single-chip microcomputer and probe or sensor, described probe or sensor are arranged on described probe installing stopper, described single-chip microcomputer is connected with described probe or sensor by data wire.
What use above-mentioned record detonation internal structure record tubing is recorded method, specifically includes following steps:
Test subject pipe two ends are sealed by step 1., check the sealing of test subject pipe, flange seal is passed through in one end of test subject pipe, opposite side end puts into cigarette film, ensure that in placement process, cigarette film is without spin, the other end at test subject pipe installs fluting flange, is placed on plank by sootiness glass;
Step 2: prepared composition is 2H2+O2The premix gas of+50%Ar and C2H2-O2Ignition gas, stand 24 hours abundant premixs;
Step 3: the test subject pipe after step 1 is assembled starts evacuation, the smoke puff of sootiness glass is directed at test subject pipe and is provided with in the distal opening of fluting flange, sootiness glass can be pressed in rubber seal by the pressure differential that now flexibility of rubber seal pipeline internal and external reasons evacuation in addition produces, then proceed to evacuation, use clip plank, buffering sponge, sootiness glass and fluting flange to be fixed, be filled with ignition gas C2H2-O2And experimental gas 2H2+O2+ 50%Ar, igniting, detonation terminates rear evacuation, steadily put into air slowly, buttress plank, dismantle clip, take down plank and leave the sootiness glass of track, take out the cigarette film leaving track, cigarette film result and sootiness glass result are scanned, namely obtains the structure in the detonation face that records clearly of this experimental gas, in Detonation Experiments process, by the probe on test subject pipe or detonation face time of advent under sensor record, bonding probes position calculation goes out detonation rate.
Embodiment: the pipe main body of record detonation internal structure of the present invention adopts steel, and internal diameter is 63.5mm, sealing plug is installed in outer wall punching, and sealing plug processing has probe/sensor mounting hole, and end couples the flange of fluting, such as Fig. 1.Install sealing rubber ring at flange fluting place, sealing rubber ring exceeds notch 2mm ~ 3mm. Experimentation: premix gas 2H2+O2+ 50%Ar has shifted to an earlier date 24 hours abundant premixs, cleans pipeline, end flange end face, rubber ring, it is ensured that rubber ring cleaning is dustless. Pipe detection puts into the cigarette film smoked, it is ensured that in placement process, cigarette film is without spin after sealing at end. Start evacuation, smoked safety glass is positioned over mounting platform, make smoke puff align with tube distal opening, glass can be pressed in rubber seal by the pressure differential that now flexibility of rubber ring pipeline internal and external reasons evacuation in addition produces, then vacuum use shelf glass and flange to be clamped between the plank posting thick sponge, it is ensured that to test glass in the deflation course after terminating and will not move or landing. Four shelfs are used to clamp four limits of glass, in order to avoid discontinuity causes glass breakage. After evacuation completes, it is filled with experimental gas 2H2+O2+ 50%Ar and ignition gas C2H2-O2, igniting. Detonation terminates rear evacuation, steadily puts into air slowly, buttresses plank, dismantles shelf, takes down plank and leave the glass of track, takes out the cigarette film leaving track, cigarette film result and glass result is scanned, obtains track result and see accompanying drawing 2.
(2) the preparation requirement of sootiness glass and cigarette film
Equipment of smoking mainly includes kerosene lamp, filter screen, covering, sees Fig. 4. Sootiness glass is square, and size should be consistent with the diameter of fluting flange, should clean up before smoking. Hollow out in the middle of covering, hollow out and be of a size of internal diameter of the pipeline. Filter screen material is iron and steel, and hole is 1mm. Filter screen is placed in above kerosene lamp, with the flue dust that filtering particle degree is too big, lights alcohol burner, secures a cover to glass, translates glass, makes flue dust absorption uniformly.
The width of cigarette film cutting is equal to internal diameter of the pipeline girth, and thickness is based on initial pressure, and initial pressure is lower than 8kPa, and thickness adopts 0.4mm; Initial pressure is lower than 12kPa, and thickness adopts 0.6mm; Initial pressure is higher than 12kPa, and thickness adopts 1mm. Taking off end glass after having tested, this position inside shear wave track when shear wave arrives has been recorded in the sootiness on glass.
Claims (6)
1. the tubing recording detonation internal structure, it is characterised in that: this tubing includes test subject pipe, sootiness glass, cigarette film and fluting flange;
Wherein, flange seal is passed through in one end of described test subject pipe, the other end of described test subject pipe is provided with described fluting flange, the tube wall of described test subject pipe has the some through holes for installation detecting device, described through hole is equipped with probe installing stopper, the inside of described test subject pipe arranges described cigarette film near described fluting flange one end, and the height of described cigarette film is equal to the internal diameter of described test subject pipe, described sootiness glass is arranged on plank, buffering sponge it is provided with between described sootiness glass and described plank, described sootiness glass, fixed by stationary fixture between described plank and described fluting flange three, it is provided with seal with elastometic washer between the contact surface of described fluting flange and described sootiness glass.
2. tubing according to claim 1, it is characterized in that, this system also includes detecting device, described detecting device includes single-chip microcomputer and probe or sensor, described probe or sensor are arranged on described probe installing stopper, and described single-chip microcomputer is connected with described probe or sensor by data wire.
3. tubing according to claim 1, it is characterised in that described test subject pipe adopts rustless steel to make, and its internal diameter is at 50.8mm-1000mm.
4. tubing according to claim 1, it is characterised in that the width of described cigarette film is less than or equal to described test subject bore girth.
5. according to claim 1, the thickness of described sootiness glass is 4-6mm.
6. the method for testing of the tubing used as described in any one of claim 1-5, it is characterised in that specifically include following steps:
Test subject pipe two ends are sealed by step 1., check the sealing of test subject pipe, flange seal is passed through in one end of test subject pipe, opposite side end puts into cigarette film, ensure that in placement process, cigarette film is without spin, the other end at test subject pipe installs fluting flange, is placed on plank by sootiness glass;
Step 2: prepared composition is 2H2+O2The premix gas of+50%Ar and C2H2-O2Ignition gas, stand 24 hours abundant premixs;
Step 3: the test subject pipe after step 1 is assembled starts evacuation, the smoke puff of sootiness glass is directed at test subject pipe and is provided with in the distal opening of fluting flange, sootiness glass can be pressed in rubber seal by the pressure differential that now flexibility of rubber ring pipeline internal and external reasons evacuation in addition produces, then proceed to evacuation, use clip plank, buffering sponge, sootiness glass and fluting flange to be fixed, be filled with ignition gas C2H2-O2And experimental gas 2H2+O2+ 50%Ar, when initial pressure, igniting, detonation terminates rear evacuation, steadily put into air slowly, buttress plank, dismounting clip, takes down plank and leaves the sootiness glass of track, takes out the cigarette film leaving track, cigarette film result and sootiness glass result are scanned, namely the structure in the detonation face that records clearly of this experimental gas is obtained, in Detonation Experiments process, by the probe on test subject pipe or detonation face time of advent under sensor record, bonding probes position calculation goes out detonation rate, and described initial pressure condition is 8-12kPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511024396.4A CN105651810B (en) | 2015-12-30 | 2015-12-30 | A kind of pipe-line system and its method of record detonation internal structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511024396.4A CN105651810B (en) | 2015-12-30 | 2015-12-30 | A kind of pipe-line system and its method of record detonation internal structure |
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| Publication Number | Publication Date |
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| CN105651810A true CN105651810A (en) | 2016-06-08 |
| CN105651810B CN105651810B (en) | 2018-09-14 |
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| CN201511024396.4A Expired - Fee Related CN105651810B (en) | 2015-12-30 | 2015-12-30 | A kind of pipe-line system and its method of record detonation internal structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768990A (en) * | 2017-03-07 | 2017-05-31 | 中国石油化工股份有限公司 | A kind of short distance pipeline detonation generating means |
| CN107942029A (en) * | 2017-11-14 | 2018-04-20 | 北京科技大学 | A kind of fast and effective direct initiation detonation pipeline group and experimental method |
| CN108387608A (en) * | 2018-02-05 | 2018-08-10 | 西安交通大学 | A kind of experimental provision and method of record detonation cell structure |
| CN108831275A (en) * | 2018-06-04 | 2018-11-16 | 北京科技大学 | A kind of intuitive detonation pipeline group for showing spiral detonation shear wave and longitudinal wave structure |
| CN113154962A (en) * | 2021-03-18 | 2021-07-23 | 北京理工大学 | Large-size visual cylindrical detonation experimental device and detonation experimental optical recording method |
| CN115389204A (en) * | 2022-08-17 | 2022-11-25 | 哈尔滨工程大学 | Detonation wave cell structure acquisition and processing method |
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| CN205484154U (en) * | 2015-12-30 | 2016-08-17 | 北京科技大学 | Record detonation inner structure's pipe -line system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768990A (en) * | 2017-03-07 | 2017-05-31 | 中国石油化工股份有限公司 | A kind of short distance pipeline detonation generating means |
| CN106768990B (en) * | 2017-03-07 | 2019-08-02 | 中国石油化工股份有限公司 | A kind of short distance pipeline detonation generating device |
| CN107942029A (en) * | 2017-11-14 | 2018-04-20 | 北京科技大学 | A kind of fast and effective direct initiation detonation pipeline group and experimental method |
| CN107942029B (en) * | 2017-11-14 | 2020-08-11 | 北京科技大学 | Rapid and effective direct detonation pipeline set and experimental method |
| CN108387608A (en) * | 2018-02-05 | 2018-08-10 | 西安交通大学 | A kind of experimental provision and method of record detonation cell structure |
| CN108831275A (en) * | 2018-06-04 | 2018-11-16 | 北京科技大学 | A kind of intuitive detonation pipeline group for showing spiral detonation shear wave and longitudinal wave structure |
| CN108831275B (en) * | 2018-06-04 | 2020-07-31 | 北京科技大学 | Detonation pipeline set capable of visually displaying structure of transverse waves and longitudinal waves of spiral detonation |
| CN113154962A (en) * | 2021-03-18 | 2021-07-23 | 北京理工大学 | Large-size visual cylindrical detonation experimental device and detonation experimental optical recording method |
| CN115389204A (en) * | 2022-08-17 | 2022-11-25 | 哈尔滨工程大学 | Detonation wave cell structure acquisition and processing method |
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| CN105651810B (en) | 2018-09-14 |
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