CN104197189B - A kind of liquid oxygen gasifier device - Google Patents
A kind of liquid oxygen gasifier device Download PDFInfo
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- CN104197189B CN104197189B CN201410347497.4A CN201410347497A CN104197189B CN 104197189 B CN104197189 B CN 104197189B CN 201410347497 A CN201410347497 A CN 201410347497A CN 104197189 B CN104197189 B CN 104197189B
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- oxygen
- gasifier
- air
- liquid oxygen
- butane
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Abstract
The invention discloses a kind of oxidant heat exchange gasification installation for direct-connected supersonic combustion ground tested, it is characterized in that, gasifier profile is in oval tubular, it is disposed with many mini diameter tube feed flow oxygen and transports and uses, remaining inner space supplies air flow in housing, and outlet then has multiple circular holes to pass through for gaseous air；The gasifier is installed on after gas main duct, before empty oxygen hybrid chamber and During Combustion of Butane heater, so as to need the air of mixing and liquid oxygen to carry out heat exchange and cause that the latter is gasified.This gasification installation disclosure satisfy that the high, medium and low different flight Mach numbers of simulation, the different proportion of different stagnation temperature operating modes and the oxidant gasification demand of pressure flow.The air and liquid oxygen for directly using needs mixing of the invention carries out heat exchange and causes that the latter is gasified, it is not necessary to which any outside working medium or energy input additionally is aided in, simple and easy to do efficient.
Description
Technical field
It is used for direct-connected supersonic combustion ground the present invention relates to a kind of liquid oxygen gasifier design device, more particularly to one kind
The liquid oxygen gasifier apparatus and method of experiment porch butane and oxygen combustion heating system.
Background technology
Preferably to carry out supersonic combustion ramjet engine research, it is necessary to set up long-time associated mode supersonic combustion ground
Face test platform.As the important component of this ground experiment platform, butane and oxygen combustion heating system play by
The product high-temperature gas mixture body formed after acutely being chemically reacted inside it is realizing in ground simulation high-altitude incoming air
Key effect.In order to simulate the incoming air of different flight operating modes in same set of During Combustion of Butane heating system, it is necessary to will be pure
Oxygen forms oxygen-enriched air after being sufficiently mixed in advance according to certain proportion with air, then carries out ignition with butane.Due to
Liquid oxygen has bigger density compared with high pressure gas oxygen, and storage and transport more facilitate, and operation is also safer, thus uses liquid oxygen
It is a selection well.However, liquid oxygen and air mix preceding, it is necessary to experience breakup of drop atomization and vaporization etc. a series of
Complex process, there is presently no especially ripe theory, the effect that liquid oxygen mixes with air is difficult to accurate pre- atomizing nozzle design
Survey and hold, and then the effect that mixed oxygen-enriched air is burnt with butane certainly will be had influence on.If it is considered that different works
The requirement of condition, situation will be more complicated, more be difficult to good empty oxygen mixed effect and follow-up butane oxygen fully fires
Burn.
The content of the invention
Carry out being sufficiently mixed facing challenges for current liquid oxygen and air, be used for it is an object of the invention to provide one kind
The liquid oxygen gasifier method for designing and device of butane and oxygen combustion heating system, using this Analysis of Nested Design method and gasification installation,
Can fully ensure that liquid oxygen just becomes gaseous state in conveying pipe before being premixed with air by over-pressed liquid, if so as to avoid
The breakup of drop atomization and vaporization that the Trans-critical cycle atomizer that not using this set gasification installation must just use is brought etc. is a series of
The uncertainty of complex process, more effectively realizes being sufficiently mixed for oxygen and air, be oxygen-enriched air with butane in combustion heating
Carry out efficiently sufficiently chemically reacting in system and provide solid foundation.
Specifically, the present invention proposes a kind of liquid oxygen gasifier device for butane and oxygen combustion heating system, its
It is characterised by, gasifier profile is in oval tubular, being disposed with many mini diameter tube feed flow oxygen and transporting and use, remaining is internal empty in housing
Between supply air flow, outlet then has multiple circular holes to pass through for gaseous air；The gasifier is installed on gas main duct
Afterwards, before empty oxygen hybrid chamber and During Combustion of Butane heater, so as to need the air of mixing and the liquid oxygen to carry out before combination effectively
Heat exchange simultaneously causes that the latter is gasified totally.
Further, the material of the gasifier be stainless steel, outer casing diameter 90mm, thickness is 5mm.
Further, many mini diameter tubes are 84, external diameter 4mm, thickness 1mm.
Further, multiple circular holes of the outlet are 85 circular holes of diameter 4mm.
The air for directly using needs to mix of the invention and liquid oxygen carry out heat exchange and cause that the latter is gasified, it is not necessary to any
Extra outside working medium or energy input is aided in, simple and easy to do efficient.Gasifier in the present invention effectively exchanges heat length
1.2m, the gasifier uniformly places 84 tubules in outer layer cavity, and liquid oxygen is passed through in slender pipeline, and air is passed through in cavity,
Liquid oxygen is heated by heat convection；Be capable of the different flight operating modes of correspondence flow 0.5-1.5Kg/s liquid oxygen by-
100 DEG C or so rapid gasifications, are easy to oxygen that efficient burning shape is fully reacted with butane after being thoroughly mixed to form oxygen-enriched air with air
Used for experiment into high enthalpy gas.
Brief description of the drawings
Fig. 1 is gasifier structural representation；
Fig. 2 is gasifier schematic view of the mounting position.
When Fig. 3 is different liquid oxygen line radicals in gasifier, the result of calculation of the length that gasifies.
When Fig. 4 is different liquid oxygen line radicals in gasifier, the Temperature Distribution result of calculation of air and oxygen.
Specific embodiment
A kind of liquid oxygen gasifier for butane and oxygen combustion heating system for providing the present invention below in conjunction with the accompanying drawings
The specific embodiment of device elaborates.
As shown in figure 1, gasifier profile is in oval tubular, material is stainless steel, outer casing diameter 90mm, and thickness is
5mm, the actual a diameter of 80mm for passing through cavity for air.84 external diameter 4mm, the mini diameter tube feed flow of thickness 1mm are disposed with altogether
Oxygen is transported and used, and remaining inner space supplies air flow in housing, there is provided sufficiently large liquid oxygen and the heat exchange area of air
To ensure that heat exchanging process is smoothly completed, liquid oxygen is gasified totally before outlet；Outlet then has 85 diameter 4mm circular holes to supply
State air passes through so that herein oxygen and air by area ratio about 1：4.Oxygen and the equal streamwise co-flow of air
Exchanged heat.The effective length that can be exchanged heat needs 1.2m (to meet big flow operating mode heat exchange demand), and is segmented support.
As shown in Fig. 2 directly to use the air that needs mix and liquid oxygen to carry out heat exchange and causing that the latter is gasified, gasifying
After 1. device is installed in gas main duct, empty oxygen hybrid chamber 2. with During Combustion of Butane heater before；Its major function is profit
Flowed with big flow normal temperature air and the liquid oxygen of low temperature is heated, make liquid oxygen that gasification can be just completed before gasifier exit.
The gasification of liquid oxygen is mainly influenceed by temperature and pressure.Liquid oxygen temperature in the liquid oxygen storage tank of upstream is -90
DEG C, temperature rises to about -100 DEG C when entering gasifier entrance after conveying pipe.It is difficult to it is confirmed that in liquid oxygen line
Operating pressure, it can occur corresponding change, real work pressure of its excursion less than upstream liquid oxygen pump with different operating modes
Power, higher than the operating pressure of downstream During Combustion of Butane heating system, and is mainly influenceed by downstream pressure.High Mach number, stagnation temperature high
During (2100K) operating mode, total pressure energy of downstream butane heating system reaches 2.8MPa；Middle Mach number, middle stagnation temperature (1650K) operating mode
When, the total pressure energy of heating system reaches 1.0MPa；Low mach, during low stagnation temperature (1200K) operating mode, heater system stagnation pressure only has
0.68MPa.Therefore correspondingly, in High Mach number heat exchanger liquid oxygen inlet pressure with 4.0MPa, heat exchanger liquid during middle Mach number
With 2.5MPa, during low mach, heat exchanger liquid oxygen inlet pressure is designed oxygen inlet pressure with 2.0MPa be proper
's.The safe gasification temperature for corresponding to liquid oxygen under these pressure respectively is 150K, 138K and 133K.If the gas of same size can be used
Change the work requirements that device meets under these three operating modes simultaneously, require gasification the Mach high of highest clearly 4.0MPa, 150K
Number operating mode.Therefore need to carry out design parameterization design for this operating mode.
Due to parameter huge number, several parameter areas are temporarily first determined according to tubing common-size here：Elongated heat exchange
The optional scope of pipe size：Φ 4-1, Φ 5-1 (correspondence internal diameter Dp is respectively 2,3mm), number 60-120；Gasifier outside dimension Φ
80-Φ100.Need ensure certain amount certain size elongated cooling pipe can in the mounting disc of certain outside dimension
It is even arrangement and leave sufficient space pass through to air, it is flat and install.0.5,1.0,1.5 represent liquid oxygen flow in legend,
Unit K g/s.
From Fig. 3 and Fig. 4 respectively it can be found that gasification length shortened with the reduction of liquid oxygen flow, the oxygen of gasifier exit
Temperature degree is raised with the reduction of liquid oxygen flow, as effective external diameter 80mm, using more than 75 external diameter 4mm thickness 1mm liquid oxygen
The gasifier of passage, enables to the length both less than 1.1m that gasifies under all operating modes, thus gasifier length is set into 1.2m
(slightly larger than 1.1m as engineering surplus) is suitable.At the same time, the oxygen temperature of gasifier exit can guarantee that higher than 160K
(meeting the design requirement higher than 150K).In general, using length 1.2m, effective external diameter 80mm, with more than 75 external diameters
The gasifier designs of 4mm thickness 1mm liquid oxygen passages can meet each working condition requirement.Based on this basic demand, be finally given as
The vaporizer apparatus specific design of Fig. 1.
The preferred embodiments of the present invention are the foregoing is only, the numerical value and number mentioned in the description of description above
Value scope is not intended to limit the invention, and simply for the present invention is provided preferred embodiment, is not intended to limit the invention, right
For those skilled in the art, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention,
Any modification, equivalent substitution and improvements made etc., should be included within the scope of the present invention.
Claims (4)
1. a kind of liquid oxygen gasifier device for butane and oxygen combustion heating system, it is characterised in that gasifier profile is in
Oval tubular, is disposed with many mini diameter tube feed flow oxygen and transports and use, and remaining inner space supplies air flow in housing, and outlet cuts
Face then has multiple circular holes to pass through for gaseous air；The gasifier is installed on after gas main duct, empty oxygen hybrid chamber and butane
Before burning heater, so as to need the air of mixing and liquid oxygen to carry out effective heat exchange before combination and cause the latter's gas completely
Change；Wherein, gasifier effectively exchanges heat length 1.2m, and the gasifier uniformly places 84 mini diameter tubes, mini diameter tube in outer layer cavity
Liquid oxygen is passed through in road, air is passed through in cavity, liquid oxygen is heated by heat convection；Can be by the different flight operating modes of correspondence
Flow 0.5-1.5Kg/s liquid oxygen by -100 DEG C or so rapid gasifications, be easy to oxygen to be thoroughly mixed to form oxygen-enriched air with air
Efficient burning formation high enthalpy gas are fully reacted with butane afterwards to be used for experiment.
2. device according to claim 1, it is characterised in that the material of the gasifier is stainless steel, outer casing is straight
Footpath 90mm, thickness is 5mm.
3. device according to claim 1, it is characterised in that many mini diameter tubes are 84, external diameter 4mm, thickness
1mm。
4. device according to claim 1, it is characterised in that multiple circular holes of the outlet are 85 diameter 4mm
Circular hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410347497.4A CN104197189B (en) | 2014-07-21 | 2014-07-21 | A kind of liquid oxygen gasifier device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410347497.4A CN104197189B (en) | 2014-07-21 | 2014-07-21 | A kind of liquid oxygen gasifier device |
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| CN104197189A CN104197189A (en) | 2014-12-10 |
| CN104197189B true CN104197189B (en) | 2017-06-30 |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19605500C1 (en) * | 1996-02-14 | 1997-04-17 | Linde Ag | Liquid oxygen generator process assembly |
| CN201218517Y (en) * | 2008-05-08 | 2009-04-08 | 青岛德固特机械制造有限公司 | High temperature air pre-heater |
| CN201281557Y (en) * | 2008-06-20 | 2009-07-29 | 诸城市良丰容器设备有限公司 | Highly effective low-temperature liquid carburettor |
| CN201815125U (en) * | 2010-10-12 | 2011-05-04 | 武汉钢铁(集团)公司 | Novel loxygen discharge evaporator |
| JP5714944B2 (en) * | 2011-03-10 | 2015-05-07 | 株式会社神戸製鋼所 | Low temperature liquefied gas vaporizer |
| CN202126195U (en) * | 2011-04-14 | 2012-01-25 | 浙江远大空分设备有限公司 | Heat exchanger for air separation device |
| CN203478836U (en) * | 2013-08-16 | 2014-03-12 | 新奥气化采煤有限公司 | Processing device for comprehensive utilization of underground gasified gas waste heat and liquid oxygen cold energy |
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Effective date of registration: 20190827 Address after: 230000 Tianmen Lake Industrial Park, West of Tianmen Road and South of Jinxiu Avenue, Hefei Economic and Technological Development Zone, Anhui Province Patentee after: Hefei Zhongke Chongming Technology Co., Ltd. Address before: 100190 Beijing City, North Fourth Ring Road West, No. 15, No. Patentee before: Institute of Mechanics of Chinese Academy of Sciences |