CN108802268A - A kind of visualized experiment fuel droplet ignition temperature measuring device - Google Patents
A kind of visualized experiment fuel droplet ignition temperature measuring device Download PDFInfo
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- CN108802268A CN108802268A CN201810377478.4A CN201810377478A CN108802268A CN 108802268 A CN108802268 A CN 108802268A CN 201810377478 A CN201810377478 A CN 201810377478A CN 108802268 A CN108802268 A CN 108802268A
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- flame
- combustion chamber
- ignition
- temperature measuring
- measuring device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
Abstract
The invention discloses a kind of visualized experiment fuel droplet ignition temperature measuring devices, belong to combustion experiment equipment technical field.The ignition temperature measuring device of the present invention, four symmetrical point columns of flame are equipped in its combustion chamber, this four point columns of flame surround and form rectangular configuration, it is equipped with two igniting wire fastening devices being spaced apart on the every point column of flame, is fastened between four point columns of flame by wire fastening device of lighting a fire and four symmetrical arc ignition wires is installed；The side of the combustion chamber is equipped with the trepanning passed through for burning sample delivery device, and the push direction of burning sample delivery device is parallel with plane where arc ignition wire, and along the distribution of the centerline direction of four arc ignition wires.The stability that device using the present invention carries out ignition process is preferable, and the device can be repeatedly used as needed, higher stability can be effectively kept during reusing, to ensure the accuracy of experimental result.
Description
Technical field
The invention belongs to combustion experiment equipment technical fields, more specifically to one kind applied to fuel solid, liquid and admittedly
Liquid is mixed and burned the visualization device of mechanism study.
Background technology
New energy continues to develop instantly, a variety of high-energy fuel occurs, phase also there are many, the igniting of high-energy fuel
Process is all of great significance the combustion mechanism of its application and announcement high-energy fuel in terms of burning and propulsion.
Currently, the sparking mode used when studying high-energy fuel burning mainly has：Chemic ignition, pyrophoric ignition, laser point
Fire and electric ignition.Wherein, using chemic ignition, device is complex, component is more, and is unfavorable for simplifying system, and igniting agent
Suitable proportion relation is selected according to the combustion characteristics of fuel using needs, it is unreliable to be easy to cause experimental result.Pyrophoric ignition
It is by resistance wire point of ignition gunpowder, ignition charge burning releases a large amount of heat and refires propellant, and this method is not recyclable to be made
With experiment every time is required for installing gunpowder additional again, and big inconvenience is brought to experimentation, and is ignited high energy using ignition charge
Fuel, gunpowder cannot ensure that content is completely the same, can give the analysis band of the results such as combustion product, ignition temperature and combustion heating amount
Carry out certain error, to reduce the accuracy of experiment, influences correct point to high-energy fuel combustion characteristics and combustion mechanism
Analysis.
The research of laser ignition has become a research hotspot in recent years, and high-energy fuel is studied as stimulus using laser
Ignition performance be because laser output energy is high and the adjustable, duration of ignition and energy-controllable system and do not limited by environmental factor, and
The research of high-energy fuel ignition performance is to the combustion mechanism of announcement high-energy fuel, and verification fire model is with very important meaning
Justice.However, using laser ignition, laser energy has to be larger than the ignition threshold of high-energy fuel, otherwise can not light, therefore
There are problems that reliability of lighting a fire using laser ignition.Secondly, using laser ignition, component, proportioning and the granularity of high-energy fuel
There are larger impact, especially some metallics for process of laser ignition, adjustment is matched as needed in ignition process research
Side will go selection ignition condition depending on specific requirement, this brings many troubles to more complicated high-energy fuel research is formulated, and
Once lasing light emitter is unstable, experiment will terminate.Electric ignition is directly to light high-energy fuel using electric energy, facilitate control and compared with
For stabilization, experimentation will not be impacted, to advantageously ensure that the accuracy of experimental result, therefore led in experimental study
All it is often to use electric ignition mode.
Such as, Chinese Patent Application No. 201110110037.6, invention and created name are：Novel experimental ignition device,
The device of this application is equally to light high-energy fuel using electric ignition mode, but this device research object is more single, only
Solid high-energy fuel, though and this device light means be electrical heating, its heating temperature controllability is relatively low, is directed to different realities
Under the conditions of testing, the case where heating temperature may change, temperature regulation and control are cumbersome, to influence the accurate of experimental result
Property.In addition, the application case of Patent No. ZL99245415.8 discloses a kind of pipe type high-temp furnace, but using this application
Device resistance wire during electrical heating can influence the effect of observation, and cannot observe projection situation and the synchronization of sample in stove
The relevant parameter of test.
Invention content
1. technical problems to be solved by the inivention
It is above insufficient existing for existing high-energy fuel ignition process research sparking mode it is an object of the invention to overcome,
Provide a kind of visualized experiment fuel droplet ignition temperature measuring device.The ignition temperature measuring device of the present invention is by means of ignition wire
Heat removes pilot fuel, and the stability of ignition process is preferable, and the device can be repeatedly used as needed,
Higher stability can be effectively kept during reuse, to ensure the accuracy of experimental result.
2. technical solution
In order to achieve the above objectives, technical solution provided by the invention is：
A kind of visualized experiment fuel droplet ignition temperature measuring device of the present invention, including combustion chamber, burning sample push
Mechanism and data acquisition processor structure, wherein first symmetrical column of flame, the second point column of flame, third are equipped in combustion chamber
The point column of flame and the 4th column of flame, this four point columns of flame are equipped on the every point column of flame and are spaced apart around rectangular configuration is formed
Two igniting wire fastening devices, fastened between four point columns of flame by wire fastening device of lighting a fire be equipped with four it is symmetrical
Arc ignition wire；The side of the combustion chamber is equipped with the trepanning passed through for burning sample delivery device, and burning sample pusher
The push direction of structure is parallel with plane where arc ignition wire, and along the distribution of the centerline direction of four arc ignition wires.
Further, the point column of flame is stainless steel, and the every point column of flame is upper in the fastening of top ignition wire
Region between region above device, the region below lower part igniting wire fastening device and two clamp devices covers
Equipped with detachable insulating ceramics set.
Further, the igniting wire fastening device includes mutually matched upper blade and lower blade, arc igniting
The end of silk is anchored on the exposed part of a column of flame by the clamp device.
Further, the ignition wire is wound in the surface of insulation arc-shaped axis, material selection nickel chromium triangle material.
Further, the burning sample delivery device includes sample push rod, seal plug and sealing ring, sealing
It is machined with the through-hole passed through for sample push rod inside plug, sample push rod is installed on by combustor side by seal plug
Trepanning in and be sealed by a seal ring, and sample push rod is located at one end of combustion chamber and offers splendid attire fuel and open
Slot.
Further, the material of the sample push rod is quartz material, is internally provided with installation temperature thermocouple
Through-hole, and temperature thermocouple is connected with the temperature data acquisition instrument outside combustion chamber.
Further, the combustion chamber two sides parallel with sample push rod push direction, which are correspondingly provided with, pries through
Window, the hagioscope include stainless steel frame, and the center side which is bonded with sidewall of combustion chamber is equipped with trepanning, this is opened
Hole interior sealing, which is filled, is equipped with photoscope, and the side parallel with the photoscope is machined with card slot on stainless steel frame, can in card slot
Dismounting is equipped with convex lens, and convex lens selects quartz material, and thermocouple in the focus of convex lens and combustion chamber with photoscope
End position it is corresponding.
Further, the bottom of the combustion chamber is equipped with pedestal, and top is equipped with capping, and pedestal is equipped with installation four
The fire hole and the first thermometer hole of the root point column of flame and the second thermometer hole, thermocouple are surveyed by conducting wire through the first thermometer hole, second
Temperature controller connection on Wen Kongyu pedestals, temperature controller is connected on air conservation switch, by conducting wire draw plug, external electricity
Source.
Further, the side wall of the combustion chamber is equipped with air inlet pipe, escape pipe, flue gas analyzer guide pipe and pressure and passes
Sensor, wherein air inlet pipe are connected by gas-guide tube with gas cylinder, and escape pipe is equipped with sealed valve, flue gas analyzer guide pipe and cigarette
Qi leel analyzer is connected, and pressure sensor is connected with pressure data Acquisition Instrument.
Further, the flue gas analyzer, pressure data Acquisition Instrument and temperature data acquisition instrument are connected with computer；
The susceptor surface is equipped with control dial plate.
3. advantageous effect
Using technical solution provided by the invention, compared with prior art, there is following remarkable result：
(1) a kind of visualized experiment fuel droplet ignition temperature measuring device of the invention, including combustion chamber, burning sample push away
Mechanism and data acquisition processor structure are sent, wherein by being optimized to the structure for putting the column of flame and ignition wire in combustion chamber,
Its ignition wire is in integrally two similar round structures being mutually parallel being made of four sections of symmetrical arc shape ignition wires, and burning sample pushes away
Send the push direction of mechanism parallel with plane where arc ignition wire, and be distributed along the centerline direction of four arc ignition wires,
To advantageously ensure that the uniformity of burning indoor temperature, it is particularly advantageous to ensure the uniform and stable property of central point temperature, reduces
Because the temperature difference of fuel ambient enviroment is to the influence caused by fuel combustion process, and then it can advantageously ensure that experimental result
Accuracy；Meanwhile the repeatability that fuel combustion experiment is carried out using the device is higher, and repeat to have when testing every time
Effect keeps higher stability.
(2) a kind of visualized experiment fuel droplet ignition temperature measuring device of the invention, the point column of flame are stainless steel
Material, and the every point column of flame it is upper in top igniting wire fastening device above region, be located at lower part igniting wire fastening device under
Region between the region and two clamp devices of side is set with detachable insulating ceramics set, and the end of ignition wire is directly logical
It crosses igniting wire fastening device and is anchored on the exposed part of a column of flame, consequently facilitating the igniting of fuel is carried out by ignition wire, and point
Fiery silk dismounting is simple, easy to use.
(3) a kind of visualized experiment fuel droplet ignition temperature measuring device of the invention, ignition wire are wound in insulation circle
The surface of arcuation axis, by insulating, arc-shaped axis is supported fixation to ignition wire, advantageously ensures that ignition process midpoint
The stability of fiery silk structure and position, prevents the influence to change to experimental result by ignition wire shape, position.
(4) a kind of visualized experiment fuel droplet ignition temperature measuring device of the invention, burning sample delivery device packet
Sample push rod, seal plug and sealing ring are included, is optimized by the structure of the delivery device to the present invention, on the one hand
The combustion test requirement that solid, liquid and solid-liquid mix three kinds of forms of fuels, another aspect delivery device can be met simultaneously
Structure and fuel it is simple to the indoor push operation of burning, and can effectively ensure that the close of combustion chamber in fuel combustion process
The stability of envelope property and Qi Nei atmosphere.
(5) a kind of visualized experiment fuel droplet ignition temperature measuring device of the invention, the inside of the sample push rod
Through-hole equipped with installation temperature thermocouple, and temperature thermocouple is connected with the temperature data acquisition instrument outside combustion chamber, pass through by
Temperature thermocouple is installed on inside sample push rod, on the one hand can effective protection temperature thermocouple, prevent in combustion process hot
Galvanic couple is damaged, and on the other hand can also improve the accuracy of the surveyed experimental data of temperature thermocouple.
(6) a kind of visualized experiment fuel droplet ignition temperature measuring device of the invention, combustion chamber and sample push rod
Two parallel sides of push direction are correspondingly provided with hagioscope, are optimized by the structure to hagioscope, particularly by
Photoscope and convex lens are used cooperatively, and clearly observation and shooting can be carried out to the combustion process of fuel in combustion chamber, is had
Conducive to the research of combustion process.In addition, by stainless steel frame card slot processing convenient for convex lens dismounting, replace, for into
One step analyzes replaceable different filters such as flame etc., facilitates observation.
(7) a kind of visualized experiment fuel droplet ignition temperature measuring device of the invention, device itself is simple in structure, convenient
Dismounting, inlet, outlet pipe is used to adjust combustion atmosphere and pressure in when burning, indoor gas component and pressure can be changed, external
Computer has collected indoor combustion parameter, helps to probe into reaction in furnace process, gas analyzer can disclose reaction process, thermometric
Thermocouple can probe into the combustion characteristics such as fuel ignition point, and the combustion chamber of controllable temperature and pressure, ambience lamp influence factor are to burned
This device can be used in the influence of journey.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of visualized experiment fuel droplet ignition temperature measuring device of the present invention；
Fig. 2 is the mounting structure schematic diagram of the midpoint column of flame and ignition wire of the present invention；
Fig. 3 is the mounting structure schematic diagram of ignition wire axis in the present invention；
Fig. 4 is the structural schematic diagram of delivery device in the present invention；
Fig. 5 is the structural schematic diagram of observation window in the present invention.
Label declaration in schematic diagram：
1, combustion chamber；2, pedestal；3, it covers；4, air inlet pipe；5, escape pipe；6, gas-guide tube；7, sample push rod；8, thermometric
Thermocouple；9, sealing ring；10, hagioscope；11, sealed valve；12, pressure sensor；13, flue gas sampling pipe；14, gas cylinder；15,
Pressure data Acquisition Instrument；16, temperature data acquisition instrument；17, flue gas analyzer；18, computer；19, fastening screw；20, convex lens；
21, frame；22, card slot；23, the first fire hole；24, the first thermometer hole；25, the 4th fire hole；26, upper blade；27, backspin
Piece；28, first column of flame；29, the 4th column of flame；30, the thirdly column of flame；31, the second point column of flame；32, ignition wire；33, thermoelectricity
It is even；34, third fire hole；35, the second fire hole；36, the second thermometer hole；37, LeftArrow；38, setting key；39, dial plate；
40, upper directionkeys；41, on & off switch；42, seal plug；43, ceramic jacket；44, axis.
Specific implementation mode
To further appreciate that present disclosure, in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
In conjunction with shown in Fig. 1-Fig. 4, a kind of visualized experiment fuel droplet ignition temperature measuring device of the present embodiment, including combustion
Room 1, burning sample delivery device and data acquisition processor structure are burnt, is pushed to fuel to be measured by burning sample delivery device
Carry out combustion test in combustion chamber 1, and using data acquisition process mechanism to the parameter in fuel combustion process, as flue gas at
Point, pressure, temperature etc. be acquired and handle analysis.Wherein, first symmetrical column of flame 28, the are equipped in combustion chamber 1
2 columns of flame 31, the thirdly column of flame 30 and the 4th column of flame 29, this four point columns of flame (are located at square around forming rectangular configuration
The vertex position of shape), it is equipped with two igniting wire fastening devices being spaced apart on the every point column of flame, passes through ignition wire fastening dress
It sets the fastening between four point columns of flame and four symmetrical arc ignition wires 32 is installed.Specifically, as shown in Figure 1 and Figure 2,
Between the top of first column of flame 28 and the second point column of flame 31 igniting wire fastening device between its underpart igniting wire fastening device
Respectively symmetrically there are one arc ignition wire 32, thirdly the top ignition wire fastenings of the column of flame 30 and the 4th column of flame 29 for fastening installation
Respectively symmetrically fastening installation is lighted a fire its underpart between wire fastening device between device there are one arc ignition wire 32, and four sections of points
Fiery silk is symmetrical.The side of the combustion chamber 1 is equipped with the trepanning passed through for burning sample delivery device, and burning sample pushes
The push direction of mechanism is parallel with 32 place plane of arc ignition wire, and along the centerline direction of four arc ignition wires 32 point
Cloth.
The present embodiment is designed ignition wire by being optimized to the structure of the point column of flame and ignition wire in combustion chamber 1
To be whole in two similar round structures being mutually parallel being made of four sections of symmetrical arc shape ignition wires, and burning sample delivery device
Push direction it is parallel with plane where arc ignition wire, and along the distribution of the centerline direction of four arc ignition wires, to have
Conducive to the uniformity of burning indoor temperature is ensured, it is particularly advantageous to ensure the uniform and stable property of central point temperature, reduces because of fuel
The temperature difference of ambient enviroment can advantageously ensure that the accurate of experimental result to the influence caused by fuel combustion process
Property；Meanwhile the repeatability that fuel combustion experiment is carried out using the device is higher, and repeat effectively keep when testing every time
Higher stability.
Embodiment 2
A kind of visualized experiment fuel droplet ignition temperature measuring device of the present embodiment, structure substantially with embodiment 1,
Difference essentially consists in：In conjunction with Fig. 1-Fig. 3, the point column of flame of the present embodiment is stainless steel, and the every point column of flame is upper in top
Between region above igniting wire fastening device, the region below lower part igniting wire fastening device and two clamp devices
Region be set with detachable insulating ceramics set 43, the point column of flame of igniting wire fastening device installed position is in naked state
(there is no ceramic jacket 43).Above-mentioned igniting wire fastening device includes mutually matched upper blade 26 and lower blade 27, arc ignition wire
32 end is anchored on the exposed part of a column of flame by the clamp device.As shown in figure 3, the ignition wire 32 is wound in absolutely
The surface of edge arc-shaped axis 44, material selection nickel chromium triangle material are supported ignition wire 32 by the setting of axis 44 solid
It is fixed, the stability of ignition wire 32 shape and structure is can effectively improve, is prevented in ignition process because 32 shape of ignition wire, position are sent out
Changing and experimental result is had an impact.
Specifically, the one third for selecting the column of flame at every and be equipped with fastening blade at 2/3rds, at two blade it
Between have a length be one third compression spring.Ignition wire by first column of flame and the 4th column of flame, the second point column of flame with thirdly
The column of flame is connected.
Embodiment 3
A kind of visualized experiment fuel droplet ignition temperature measuring device of the present embodiment, structure substantially with embodiment 2,
Difference essentially consists in：As shown in figure 4, the burning sample delivery device of the present embodiment includes sample push rod 7,42 and of seal plug
Sealing ring 9 is machined with the through-hole passed through for sample push rod 7 inside seal plug 42, is pushed sample by seal plug 42
Bar 7 is installed in the trepanning of 1 side of combustion chamber and is sealed by sealing ring 9, and sample push rod 7 is located at combustion chamber 1
One end offers fluting, and solid sample can be directly held by the fluting, is directly hung on thermocouple if sample is liquid, until
It is then placed in fluting in mixing sample.
Therefore, by the structure design of burning sample delivery device, it on the one hand can meet solid, liquid simultaneously and consolidate
Liquid mixes the combustion test requirement of three kinds of forms of fuels, and the structure and fuel of another aspect delivery device are pushed away to burning is indoor
Send stability easy to operate, and can effectively ensure that the leakproofness of combustion chamber and Qi Nei atmosphere in fuel combustion process.It is above-mentioned
The material of sample push rod 7 is quartz material, is internally provided with the through-hole of installation temperature thermocouple 8, and temperature thermocouple 8 and combustion
It burns the temperature data acquisition instrument 16 outside room 1 to be connected, the temperature in fuel combustion process be carried out by temperature thermocouple 8 real-time
It measures and sends temperature data acquisition instrument 16 to and carry out processing analysis, the present embodiment by temperature thermocouple 8 by being installed on sample
In push rod 7, to both protect temperature thermocouple 8 that it is prevented to be damaged, while measurement data can also be effectively improved
Stability and veracity.
Embodiment 4
A kind of visualized experiment fuel droplet ignition temperature measuring device of the present embodiment, structure substantially with embodiment 3,
Difference essentially consists in：In conjunction with Fig. 1, Fig. 5, two sides parallel with the push of sample push rod 7 direction of the combustion chamber 1 are corresponding to be set
There is hagioscope 10, the hagioscope 10 is including stainless steel frame 21, in the side which is bonded with 1 side wall of combustion chamber
The heart is equipped with trepanning, which, which fills, is equipped with photoscope, and the side parallel with the photoscope adds on stainless steel frame 21
Work has card slot 22, and convex lens 20 is detachably equipped in card slot 22, and convex lens 20 selects quartz material, and convex lens with photoscope
The focus of mirror 20 is corresponding with the end position of thermocouple 33 in combustion chamber 1.Setting and knot of the present embodiment by hagioscope 10
Structure optimizes, and particularly by being used cooperatively for photoscope and convex lens, it is clear to be carried out to the combustion process of fuel in combustion chamber
Ground is observed and shooting, is conducive to the research of combustion process.In addition, by the processing of card slot on stainless steel frame convenient for convex lens
Dismounting is replaced, and for replaceable different filters of further analysis flame etc. etc., facilitates observation.In addition, hagioscope 10 opens up position
It is parallel to the direction of resistance wire, will not block or influence the visual field because resistance wire generates heat, facilitate observation and shooting.
Embodiment 5
A kind of visualized experiment fuel droplet ignition temperature measuring device of the present embodiment, structure substantially with embodiment 4,
Difference essentially consists in：The bottom of the combustion chamber 1 is equipped with pedestal 2, and top is equipped with capping 3, specifically, the top of combustion chamber 1
Surrounding extends outward to form boss, and capping 3 is i.e. corresponding with the boss to be fixedly linked, and is carried out by fastening screw 19 in the present embodiment
It is fixedly linked.The pedestal 2 is equipped with fire hole (the first fire hole 23, the second fire hole 35, the third of four point columns of flame of installation
Fire hole 34 and the 4th fire hole 25, are all made of ambroin and are made) and the first thermometer hole 24 and the second thermometer hole 36, thermoelectricity
Even 33 are connect through the first thermometer hole 24, the second thermometer hole 36 with the temperature controller on pedestal by conducting wire, and temperature controller is connected to air
On protection switch, pass through conducting wire draw plug, external power supply.The side wall of the combustion chamber 1 is equipped with air inlet pipe 4, escape pipe 5, cigarette
Qi leel analyzer guide pipe and pressure sensor.Wherein air inlet pipe 4 is connected by gas-guide tube 6 with gas cylinder 14, to adjustable burning
Indoor combustion atmosphere, is changed according to different experimental conditions；Escape pipe 5 is equipped with sealed valve 11, can be effectively ensured
Air-tightness, experiment front opening sealed valve 11, excludes the indoor gas that burns, and to ensure to burn, indoor atmosphere is stablized.Flue gas
Analyzer guide pipe is connected with flue gas analyzer 17, and pressure sensor is connected with pressure data Acquisition Instrument 15, passes through flue gas analysis
Atmosphere constituent variation before and after the record reaction of instrument 17 and in reaction process, pressure data Acquisition Instrument 15 are indoor for detecting burning
Pressure, pressure is constant before ensureing reaction.The flue gas analyzer 17, pressure data Acquisition Instrument 15 and temperature data acquisition instrument 16 are equal
It is connected with computer 18；2 surface of the pedestal is equipped with control dial plate.In conjunction with attached drawing, in the present embodiment there are two the dial plates of left side, top
Branch dial is for showing Current Temperatures, and lower part branch dial is for showing set temperature.Control dial plate is correspondingly provided with operation button, such as
Heating temperature can be set in advance in setting key 38, LeftArrow 37, upper directionkeys 40 and on & off switch 41 before experiment, ensure heating
Ambient stable constant temperature.
Embodiment 6
Using the visualized experiment of embodiment 5 with fuel droplet ignition temperature measuring device to aluminium powder in CO2In combustion mechanism
It is studied, then gas is CO in gas cylinder 142.When specifically used, CO is opened2Sealed valve on gas cylinder air valve and escape pipe 5
11, air in combustion chamber 1 is discharged, closes gas cylinder 14 and sealed valve 11, sets ignition wire temperature, after temperature is stablized, weighs 1g
50nm aluminium powders as in the fluting of 7 end of sample push rod so that temperature thermocouple 8 is fully embedded in sample.It rapidly will combustion
In material push-in combustion chamber, and shot using high-speed camera.Temperature data acquisition instrument records the temperature number in combustion process
According to pressure acquisition instrument and flue gas analyzer record experimental data in real time.The present embodiment can be to nanometer aluminium powder in CO2It is fired under atmosphere
CO contents are studied in the ignition temperature of burning, maximum temperature, flame pattern and product, and the product in fluting can be used for scanning electricity
The observation analysis such as mirror, transmission electron microscope and X-ray diffraction, so as to study aluminium powder in CO2In combustion mechanism.
Embodiment 7
A kind of visualization device of the experiment high-energy fuel combustion mechanism research of the present embodiment, structure with embodiment 6,
The difference is that：Gas uses air, and sample is liquid fuel.
The nano aluminum fluid that configuration concentration is 0%, 2.5%, 5%, 7.5%, 10%, in use, opening air gas cylinder gas
The air in combustion chamber 1 is discharged in sealed valve 11 on valve and escape pipe 5, closes gas cylinder and sealed valve 11, sets ignition wire
Temperature after temperature is stablized, extracts 10ul nano-fluids using needle tubing and is suspended on the even head of temperature thermocouple 8, rapid push-in burning
Interior, and shot using high-speed camera.Temperature data acquisition instrument record combustion process in temperature, pressure acquisition instrument and
Flue gas analyzer records experimental data in real time.The present embodiment can to ignition temperature that nano-fluid burns under air atmosphere, most
Smoke components are studied in high-temperature, flame pattern and product, and the product of groove and even head surface can be used for scanning electron microscope, thoroughly
The observation analysis such as radio mirror and X-ray diffraction, so as to study the aerial combustion mechanism of nano-fluid.
Embodiment 8
A kind of visualization device of the experiment high-energy fuel combustion mechanism research of the present embodiment, structure with embodiment 6,
The difference is that：Gas uses argon gas, and sample is liquid fuel.
The nano aluminum fluid that configuration concentration is 0%, 2.5%, 5%, 7.5%, 10%, in use, opening argon gas gas cylinder gas
Sealed valve 11 on valve and escape pipe 5, discharge burning room air, closes gas cylinder and air valve and sets ignition wire temperature, temperature
After degree is stablized, extracts 10ul nano-fluids using needle tubing and be suspended on the even head of temperature thermocouple 8, it is rapid to be pushed into combustion chamber, and
It is shot using high-speed camera.Temperature data acquisition instrument records the temperature in combustion process, pressure acquisition instrument and flue gas point
Analyzer records experimental data in real time.The present embodiment can study the evaporation process of nano-fluid under an argon atmosphere, such as
Evaporating temperature, evaporation rate and microexplosion phenomenon etc..Normal pressure set after can open air valve set pressure as 0.1MPa,
The evaporation process variation of drop under the conditions of the different pressures such as 0.5MPa, 1.0MPa, 1.5MPa, 2.0MPa.
Schematically the present invention and embodiment are described above, description is not limiting, shown in attached drawing
Only one of embodiments of the present invention, actual structure is not limited to this.So if the ordinary skill people of this field
Member is enlightened by it, without departing from the spirit of the invention, similar with the technical solution without the design of creativity
Linkage and embodiment, all belong to the scope of protection of the present invention.
Claims (10)
1. a kind of visualized experiment fuel droplet ignition temperature measuring device, it is characterised in that：Including combustion chamber (1), burning sample
Delivery device and data acquisition processor structure, wherein be equipped with the symmetrical column of flame (28), second in combustion chamber (1) at first
The point column of flame (31), the thirdly column of flame (30) and the 4th column of flame (29), this four point columns of flame surround and form rectangular configuration, every point
Two igniting wire fastening devices being spaced apart are equipped on the column of flame, it is tight between four point columns of flame by wire fastening device of lighting a fire
Guan County is equipped with four symmetrical arc ignition wires (32)；The side of the combustion chamber (1) is equipped with for burning sample pusher
The trepanning that structure passes through, and the push direction of burning sample delivery device is parallel with plane where arc ignition wire (32), and along four
The centerline direction of root arc ignition wire (32) is distributed.
2. a kind of visualized experiment fuel droplet ignition temperature measuring device according to claim 1, it is characterised in that：It is described
The point column of flame be stainless steel, and the every point column of flame it is upper in top igniting wire fastening device above region, be located at lower part
The region between region and two clamp devices below igniting wire fastening device is set with detachable insulating ceramics set
(43)。
3. a kind of visualized experiment fuel droplet ignition temperature measuring device according to claim 2, it is characterised in that：It is described
Igniting wire fastening device include mutually matched upper blade (26) and lower blade (27), the end of arc ignition wire (32) passes through
The clamp device is anchored on the exposed part of a column of flame.
4. a kind of visualized experiment fuel droplet ignition temperature measuring device according to any one of claim 1-3, special
Sign is：The ignition wire (32) is wound in the surface of insulation arc-shaped axis (44), material selection nickel chromium triangle material.
5. a kind of visualized experiment fuel droplet ignition temperature measuring device according to any one of claim 1-3, special
Sign is：The burning sample delivery device includes sample push rod (7), seal plug (42) and sealing ring (9), seal plug
It is machined with the through-hole passed through for sample push rod (7) inside head (42), sample push rod (7) are installed by seal plug (42)
It is sealed in the trepanning of combustion chamber (1) side and by sealing ring (9), and sample push rod (7) is located at combustion chamber (1)
One end offers the fluting for containing fuel.
6. a kind of visualized experiment fuel droplet ignition temperature measuring device according to claim 5, it is characterised in that：It is described
The material of sample push rod (7) is quartz material, is internally provided with the through-hole of installation temperature thermocouple (8), and temperature thermocouple
(8) the temperature data acquisition instrument (16) external with combustion chamber (1) is connected.
7. a kind of visualized experiment fuel droplet ignition temperature measuring device according to any one of claim 1-3, special
Sign is：The combustion chamber (1) two sides parallel with sample push rod (7) push direction are correspondingly provided with hagioscope (10),
The hagioscope (10) includes stainless steel frame (21), the center side which is bonded with combustion chamber (1) side wall
Equipped with trepanning, which, which fills, is equipped with photoscope, and the side parallel with the photoscope adds on stainless steel frame (21)
Work has card slot (22), and convex lens (20) is detachably equipped in card slot (22), and convex lens (20) selects quartzy material with photoscope
Matter, and the focus of convex lens (20) is corresponding with the end position of combustion chamber (1) interior thermocouple (33).
8. a kind of visualized experiment fuel droplet ignition temperature measuring device according to claim 7, it is characterised in that：It is described
The bottom of combustion chamber (1) is equipped with pedestal (2), and top is equipped with capping (3), and pedestal (2) is equipped with four point columns of flame of installation
Fire hole and the first thermometer hole (24) and the second thermometer hole (36), thermocouple (33) by conducting wire through the first thermometer hole (24),
Second thermometer hole (36) is connect with the temperature controller on pedestal.
9. a kind of visualized experiment fuel droplet ignition temperature measuring device according to claim 8, it is characterised in that：It is described
The side wall of combustion chamber (1) is equipped with air inlet pipe (4), escape pipe (5), flue gas analyzer guide pipe and pressure sensor, wherein air inlet
Pipe (4) is connected by gas-guide tube (6) with gas cylinder (14), and escape pipe (5) is equipped with sealed valve (11), flue gas analyzer guide pipe
It is connected with flue gas analyzer (17), pressure sensor is connected with pressure data Acquisition Instrument (15).
10. a kind of visualized experiment fuel droplet ignition temperature measuring device according to claim 9, it is characterised in that：Institute
Flue gas analyzer (17), pressure data Acquisition Instrument (15) and temperature data acquisition instrument (16) is stated to be connected with computer (18)；It is described
Pedestal (2) surface is equipped with control dial plate.
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