CN108279281A - A kind of method and device of control metal Rich Oxygen Combustion - Google Patents
A kind of method and device of control metal Rich Oxygen Combustion Download PDFInfo
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- CN108279281A CN108279281A CN201810084610.2A CN201810084610A CN108279281A CN 108279281 A CN108279281 A CN 108279281A CN 201810084610 A CN201810084610 A CN 201810084610A CN 108279281 A CN108279281 A CN 108279281A
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- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
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Abstract
The invention discloses a kind of method and devices that metal Rich Oxygen Combustion is controllable, and described method includes following steps：(1) sample is prepared：(2) fire-retardant sleeve is prepared：(3) cooling device is installed：(4) sample is installed：(5) oxygen-enriched combusting is tested；(6) sample is taken out after the completion of combustion test.Corresponding device includes bar samples, and fire-retardant sleeve is cased with outside the bar samples, and the fire-retardant cartridge exterior is cased with cooling device, and inlet and outlet are arranged in the cooling device, and the water outlet is equipped with water pressure safety device.The present invention has the following advantages：Easy to operation, experiment safety is high.Fire-retardant oxygen-enriched combusting pressure threshold value is high (＞ 69MPa), and the combustion heat is low, should not be ignited；Applicability is high, can be used for quickly stopping multiple material oxygen-enriched combusting, especially oxygen-enriched lower boiler plug alloy；Help to study the combustion phenomena in metal material Rich Oxygen Combustion, substance transmits, Elemental redistribution.
Description
Technical field
The invention belongs to metal burning performance testing and failure assessment technique fields, are related to a kind of control metal oxygen-enriched combusting
The method and device of process.
Background technology
Under the conditions of high temperature, high pressure, oxygen-enriched atmosphere, most metal materials can occur a kind of similar to timber, nylon
The combustion phenomena of equal materials, i.e. metal burning.Its feature is shown as：The drastically raising of temperature generates flame, sends out glare
And with the violent release of heat.As domestic and international thrust-augmented rocket develops, the requirement to rocket carrying capacity is higher and higher,
Thrust-augmented rocket mainly uses liquid oxygen/kerosene rocket engine or liquid oxygen/liquid hydrogen rocket engine, rocket engine to be worked with material
Environment is high pressure, high temperature, oxygen-enriched, therefore there is the risks of burning.Such as：1980, Johnson space center test site occurred
Explosion, scene find that this explosion is caused by the burning of engine second level aluminum regulating valve；U.S.'s Marshall Aviation Center 116 is tested
Platform pads made of 316L, A286 stainless steel and piston burns in the high-pressure oxygen-enriched lower generations of 35MPa and system is caused to be exploded.State
The inside and outside research work for being seen in report and its pertinent literature patent show high temperature alloy, copper alloy, stainless steel-like material oxygen-enriched
Under the conditions of exist burning risk.The method that corresponding test metal material burning behavior under excess oxygen has also been invented in the country
With system.The method and system of existing analysis test material burning behavior still has certain limitation：(1) material combustion process
Sample is inferred after middle burning behavior, burning tissues and substance transmit foundation burning stopping, being unable to get verification；(2) one
A little boiler plug alloys depress vigorous combustion, until after-flame, can not obtain effective burning test specimen to its burning behavior in extremely low oxygen
It is analyzed.In view of the above problems, the invention discloses a kind of method and devices that metal Rich Oxygen Combustion is controllable.
Invention content
The present invention provides a kind of method and device that metal Rich Oxygen Combustion is controllable, is existed by exporting metal material rapidly
The combustion heat generated in combustion process under excess oxygen makes the method and apparatus of its flameout.It realizes oxygen-enriched to metal material
Tissue change in combustion process, substance transmit, the research of Elemental redistribution, for research metal material oxygen-enriched combusting behavior and fire-retardant
Mechanism provides foundation.
The invention mainly relates to the method and devices of control metal Rich Oxygen Combustion, and described method includes following steps：
(1) sample is made：Sample is processed into rodlike, specimen size：Diameter of phi 0.1mm-Φ 15mm, length 70-
200mm.Grinding and polishing processing is carried out to sample outer surface, makes surface roughness Ra≤0.2 μm, it is therefore an objective to sample be made to be hindered with sample outer layer
It fires layer and increases contact area, increase heat transfer.
(2) fire-retardant sleeve is made：Sleeve inner circle size is consistent with said sample diameter dimension, and excircle of sleeve diameter is equal to examination
Sample diameter+4mm-6mm, length >=20mm.Fire-retardant sleeve is closely surrounded with sample in said sample, sleeve lower surface and sample point
It fires or ignites and hold distance, set according to experiment.
(3) cooling device is installed：Cooling device is installed outside fire-retardant sleeve, cooling device is cylindrical shape, inner wall with it is fire-retardant
Sleeve outer wall is fitted close.Safety device is equipped on cooling device water outlet.
(4) sample is installed：The sample for installing fire-retardant sleeve and cooling device is fixed on burning in fact by fixing device
It tests on the sample frame of equipment；
(5) oxygen-enriched combusting is tested；
(6) sample is taken out after the completion of combustion test.Fire-retardant sleeve and cooling device are removed from sample fixing end.
Fire-retardant sleeve interior surface described in step (2) is fitted close with sample outer surface, to be effectively conducted the combustion heat, resistance
Sleeve is fired to use than the test sample fire resistance good high Ni alloys (nickel content >=70%) of energy or pure Ni.
Safety device described in step (3) detects whether recirculated water is revealed by variation in water pressure, if leakage equipment occurs certainly
Dynamic circuit breaker electricity simultaneously triggers equipment safety device, ensures experiment safety.Above-mentioned cooling device is using thermal conductivity good Cu or copper alloy system
Make, and be fitted close in fire-retardant sleeve, with the more efficient export combustion heat；
Implement the device of above-mentioned control metal Rich Oxygen Combustion method, including bar samples, outside the bar samples
It is cased with fire-retardant sleeve, the fire-retardant cartridge exterior is cased with cooling device, and inlet and outlet are arranged in the cooling device, described
Water outlet is equipped with water pressure safety device.
The present invention controls the method and device of metal Rich Oxygen Combustion, has the following advantages：
1, easy to operation, experiment safety is high.Fire-retardant oxygen-enriched combusting pressure threshold value is high (＞ 69MPa), and the combustion heat is low, no
Preferably it is ignited.
2, applicability is high, can be used for quickly stopping multiple material oxygen-enriched combusting, especially oxygen-enriched lower boiler plug alloy.
3, contribute to study the combustion phenomena in metal material Rich Oxygen Combustion, substance transmits, Elemental redistribution.
Description of the drawings
Fig. 1 is the structural schematic diagram of the device of present invention control metal Rich Oxygen Combustion.
Fig. 2 is 1 burning test specimen comparison diagram of the embodiment of the present invention.
Fig. 3 is 2 burning test specimen comparison diagram of the embodiment of the present invention.
Fig. 4 is 3 burning test specimen comparison diagram of the embodiment of the present invention.
1 water inlet in Fig. 1；2 samples；3 fire-retardant sleeves；4 cooling devices；5 fixing devices；6 sample frames；7 water pressure safeties fill
It sets；8 water outlets.
Specific implementation mode
Below in conjunction with the accompanying drawings, the present invention is described in more detail.
The invention mainly relates to a kind of method and devices of control metal Rich Oxygen Combustion.Fig. 1 is present invention control gold
Belong to the structural schematic diagram of the device of Rich Oxygen Combustion.Described device includes bar samples 2, and resistance is cased with outside the bar samples
Fire sleeve 3, the fire-retardant cartridge exterior is cased with cooling device 4, the cooling device setting water inlet 1 and water outlet 8, it is described go out
Water pressure safety device 7 is equipped at the mouth of a river.
Embodiment 1：Sample material Fe95Ni5
(1) sample 2 is made：Sample is processed into it is rodlike, to sample outer surface carry out grinding and polishing processing, make surface roughness Ra
≤ 0.2 μm, specimen size：Diameter of phi 3.5mm, length 70mm.
(2) fire-retardant sleeve 3 is made：Sleeve inner circle size Φ 3.5mm, excircle of sleeve diameter of phi 7.5mm, length 30mm.Resistance
Combustion sleeve closely surrounds in said sample, and sleeve lower surface, which lights or ignites with sample, holds distance 20mm；
(3) cooling device 4 is installed：Cooling device is installed outside fire-retardant sleeve, cooling device is cylindrical shape, inner wall with it is fire-retardant
Sleeve outer wall is fitted close.
(4) sample is installed：The sample for installing fire-retardant sleeve and cooling device is fixed on burning in fact by fixing device 5
It tests on the sample frame 6 of equipment；
(5) oxygen-enriched combusting is tested, and experiment parameter magnesium rod ignites, and experiment oxygen presses 0.01MPa；
(6) sample is taken out after the completion of combustion test, as shown in Fig. 2, wherein (a) original sample；(b) dress shown in non-installation diagram 1
The burning test specimen set；(c) burning test specimen being mounted with after Fig. 1 shown devices.Fire-retardant sleeve and cooling are removed from sample fixing end
Device.
Embodiment 2：Sample material Fe92Cr8
(1) sample is made：Sample is processed into it is rodlike, to sample outer surface carry out grinding and polishing processing, make surface roughness Ra
≤ 0.2 μm, specimen size：Diameter of phi 3.5mm, length 70mm.
(2) fire-retardant sleeve is made：Sleeve inner circle size Φ 3.5mm, excircle of sleeve diameter of phi 7.5mm, length 30mm.It is fire-retardant
Sleeve closely surrounds in said sample, and sleeve lower surface, which lights or ignites with sample, holds distance 25mm；
(3) cooling device is installed：Cooling device is installed outside fire-retardant sleeve, cooling device is cylindrical shape, inner wall with it is fire-retardant
Sleeve outer wall is fitted close.
(4) sample is installed：The sample for installing fire-retardant sleeve and cooling device is fixed on burning in fact by fixing device
It tests on the sample frame of equipment；
(5) oxygen-enriched combusting is tested, and experiment parameter magnesium rod ignites, and experiment oxygen presses 1.5MPa；
(6) sample is taken out after the completion of combustion test, as shown in figure 3, wherein (a) original sample；(b) dress shown in non-installation diagram 1
The burning test specimen set；(c) burning test specimen being mounted with after Fig. 1 shown devices.Fire-retardant sleeve and cooling are removed from sample fixing end
Device.
Embodiment 3：Sample material Fe76Cr14Ni10
(1) sample is made：Sample is processed into it is rodlike, to sample outer surface carry out grinding and polishing processing, make surface roughness Ra
≤ 0.2 μm, specimen size：Diameter of phi 3.5mm, length 70mm.
(2) fire-retardant sleeve is made：Sleeve inner circle size Φ 3.5mm, excircle of sleeve diameter of phi 7.5mm, length 30mm.It is fire-retardant
Sleeve closely surrounds in said sample, and sleeve lower surface, which lights or ignites with sample, holds distance 12mm；
(3) cooling device is installed：Cooling device is installed outside fire-retardant sleeve, cooling device is cylindrical shape, inner wall with it is fire-retardant
Sleeve outer wall is fitted close.
(4) sample is installed：The sample for installing fire-retardant sleeve and cooling device is fixed on burning in fact by fixing device
It tests on the sample frame of equipment；
(5) oxygen-enriched combusting is tested, and experiment parameter magnesium rod ignites, and experiment oxygen presses 1.5MPa；
(6) sample is taken out after the completion of combustion test, as shown in figure 4, wherein (a) original sample；(b) dress shown in non-installation diagram 1
The burning test specimen set；(c) burning test specimen being mounted with after Fig. 1 shown devices.Fire-retardant sleeve and cooling are removed from sample fixing end
Device.
Technical scheme of the present invention is described in detail in above-described embodiment.It is apparent that the present invention is not limited being retouched
The embodiment stated.Based on the embodiments of the present invention, those skilled in the art can also make a variety of variations accordingly, but appoint
What is equal with the present invention or similar variation shall fall within the protection scope of the present invention.
Claims (6)
1. a kind of method of control metal Rich Oxygen Combustion, which is characterized in that include the following steps：
(1) sample is prepared：Bar samples outer surface is handled, surface roughness Ra≤0.2 μm is made；
(2) fire-retardant sleeve is prepared：Fire-retardant excircle of sleeve diameter is equal to specimen finish+(4mm-6mm)；
(3) cooling device is installed：Cooling device is installed outside fire-retardant sleeve, cooling device is cylindrical shape, inner wall and fire-retardant sleeve
Outer wall is fitted close；
(4) sample is installed：The sample for installing fire-retardant sleeve and cooling device is fixed on the sample frame of combustion experiment equipment；
(5) oxygen-enriched combusting is tested；
(6) sample is taken out after the completion of combustion test.
2. method according to claim 1, which is characterized in that specimen finish Φ 0.1mm-Φ 15mm described in step (1),
Length 70-200mm.
3. method according to claim 1, which is characterized in that the material of fire-retardant sleeve described in step (2) be nickel content >=
The interior circular diameter of 70% high Ni alloys or pure Ni, fire-retardant sleeve are equal to specimen finish.
4. method according to claim 1, which is characterized in that the material of cooling device described in step (3) is that Cu or copper close
Gold.
5. method according to claim 1, which is characterized in that cooling device water outlet described in step (3) is equipped with hydraulic pressure
Safety device determines whether to occur recirculated water leakage by measuring variation in water pressure.
6. a kind of device for implementing to control metal Rich Oxygen Combustion method described in claim 1, which is characterized in that including rodlike
Sample is cased with fire-retardant sleeve outside the bar samples, and the fire-retardant cartridge exterior is cased with cooling device, and the cooling device is set
Inlet and outlet are set, the water outlet is equipped with water pressure safety device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810084610.2A CN108279281B (en) | 2018-01-29 | 2018-01-29 | Method and device for controlling oxygen-enriched combustion process of metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810084610.2A CN108279281B (en) | 2018-01-29 | 2018-01-29 | Method and device for controlling oxygen-enriched combustion process of metal |
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| CN108279281A true CN108279281A (en) | 2018-07-13 |
| CN108279281B CN108279281B (en) | 2022-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810084610.2A Active CN108279281B (en) | 2018-01-29 | 2018-01-29 | Method and device for controlling oxygen-enriched combustion process of metal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596770A (en) * | 2018-11-27 | 2019-04-09 | 西安近代化学研究所 | A kind of propellant powder explosion fragment pressure release extinction device |
| CN110082476A (en) * | 2019-05-24 | 2019-08-02 | 中国兵器工业第五九研究所 | A kind of metal burning pilot system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596770A (en) * | 2018-11-27 | 2019-04-09 | 西安近代化学研究所 | A kind of propellant powder explosion fragment pressure release extinction device |
| CN110082476A (en) * | 2019-05-24 | 2019-08-02 | 中国兵器工业第五九研究所 | A kind of metal burning pilot system |
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| Publication number | Publication date |
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| CN108279281B (en) | 2022-02-15 |
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