CN104089976B - A kind of visual device being applied to solid fuel ignition study mechanism - Google Patents
A kind of visual device being applied to solid fuel ignition study mechanism Download PDFInfo
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- CN104089976B CN104089976B CN201410326059.XA CN201410326059A CN104089976B CN 104089976 B CN104089976 B CN 104089976B CN 201410326059 A CN201410326059 A CN 201410326059A CN 104089976 B CN104089976 B CN 104089976B
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Abstract
The invention discloses a kind of visual device being applied to solid fuel ignition study mechanism, belong to combustion experiment firing equipment field.The toroidal cavity formed between inner tube and outer tube in the present invention is heating chamber, is provided with refractory insulating layer in the periphery of outer tube, refractory insulating layer is provided with hagioscope；Sample pusher is installed on the first sealing flange of body of heater, and this sample pusher for sending into the inside of body of heater by solid fuel；Air inlet system and exhaust system are installed on the first sealing flange and second sealing flange of body of heater, and these air inlet system and exhaust system are for adjusting combustion atmosphere and the pressure of furnace interior；Data collecting system is connected with air inlet system and exhaust system, sample pusher respectively, and this data collecting system is for gathering the combustion parameter of furnace interior.Present invention achieves fuel in different atmosphere and the research of combusting under pressure characteristic, thus provide the foundation for probing into fuel combustion mechanism, to studying fuel combustion mechanism and applying significant.
Description
Technical field
The present invention relates to combustion experiment firing equipment field, grind more particularly, it relates to one is applied to solid fuel ignition mechanism
The visual device studied carefully.
Background technology
Solid fuel ignition study mechanism generally requires multiple from temperature change, flame appearance structure, smoke components, gas production etc.
Aspect tests fuel relative combustion characteristic simultaneously, and tube furnace is widely used in institution of higher learning, scientific research as conventional heater
The experiment such as institutes, industrial and mining enterprises and small lot batch manufacture.Traditional tube furnace is typically all and uses helical heater strip heat supply, and outside is used
Sheet metal machine-shaping, central filler refractory fibre is incubated.The structural advantages of this tube furnace is high insulating effect, but shortcoming
Being that volume is excessive, time flame-out, heat radiation is slow, and Heating Zone Temperature difference is big, and the most key is that burner hearth mostly is nontransparent structure, heating
Process is the most invisible, it is impossible to flame pattern during observation fuel combustion and spread speed, and cannot due to self seal difference
Obtain gas production and furnace pressure change in fuel combustion process, for further investigation fuel combustion characteristics, explore combustion mechanism and make
Become huge obstacle.Therefore temperature change when exploitation one can test fuel combustion simultaneously, gas production, smoke components, flame pass
Broadcast the multipurpose solid fuel ignition characteristic test experimental system of speed and the transparent visual of appearance structure, high temperature high voltage resistant to seem pole
For necessity.
Being found by patent retrieval, Chinese Patent Application No. 201210076605.X, invention and created name is: a kind of all-transparent pipe
Formula resistance furnace, this application case discloses a kind of all-transparent tube type resistance furnace, and concrete structure includes inlet end, body of heater and outlet side three
Part, inlet end arranges flowmeter and needle-valve, pointer-type vacuum meter, vacuum adapter coupling, and body of heater includes furnace body support, transparent
Quartz container and the transparent heat pipe that adds, suprasil shell and transparent to add cavity between heat pipe be vacuum insulation chamber, heating wire twines
Add on heat pipe outer wall around transparent.Above-mentioned patent formula housing and heating translucent quartz ampoule make, facilitate filling, fire,
Observe.But transparent quartz tube radiant heat loss is big, and its heating wire winding adds on heat pipe outer wall, after electrothermal wire heating to transparent
Light is very strong, and between each circle of heater strip, spacing is less, it is impossible to see materials inside state, and its function is simple, be only capable of surveying
Examination fire box temperature, it is impossible to simultaneously obtain the data such as smoke components, gas production and pressure in the burner hearth change.
Additionally, China Patent No. ZL99245415.8, invention and created name is: a kind of pipe type high-temp furnace；China Patent No.
ZL201210361878.9, invention and created name is: a kind of sealing visible tube furnace.The resistance wire of above-mentioned patent formula or heating
The effect of observation all can be affected, also without solving conveniently to observe example reaction situation and same pacing in stove well after silk heating
The problem trying other relevant parameters.So being still further improved for the problems referred to above.
Summary of the invention
1. invention to solve the technical problem that
Present invention aim to overcome that prior art cannot be tested simultaneously fuel temperature change, furnace pressure change, gas production and
Combustibilities such as smoke components and cannot conveniently observe stove fuel combustion flame pattern and the deficiency of circulation way, it is provided that a kind of
Being applied to the visual device of solid fuel ignition study mechanism, the present invention can gather solid fuel at different gas by simple operations
Heat under the conditions of atmosphere, pressure, heating rate etc., burn, temperature variation data in extinguishing process, furnace pressure delta data,
Generate smoke components and flame pattern and the information such as circulation way, speed, thus solid fuel ignition mechanism researched and analysed,
Use safety and application for fuel have established necessary basis, and the radiation loss of apparatus of the present invention is little, is affected by heater strip luminescence
Little, hagioscope can conveniently adjust viewing angle, simple to operate, has huge application value.
2. technical scheme
For reaching above-mentioned purpose, the technical scheme that the present invention provides is:
A kind of visual device being applied to solid fuel ignition study mechanism of the present invention, including body of heater, also includes that sample pushes dress
Put, air inlet system and exhaust system and data collecting system, wherein: described body of heater include inner tube, outer tube, refractory insulating layer, hagioscope,
Insulation cover, heater strip, gim peg, the first sealing flange and the second sealing flange, wherein: described inner and outer tubes coaxially set
Put, be separately installed with the first sealing flange and the second sealing flange at the both ends of body of heater, the annular formed between inner tube and outer tube
Cavity is heating chamber, is provided with four or the heater strip of more than four in this heating chamber, and this heater strip is along the length of inner tube central shaft
Direction is arranged, and the two ends of heater strip are individually fixed on the first sealing flange and the second sealing flange；Arrange in the periphery of outer tube
Having refractory insulating layer, described refractory insulating layer is provided with hagioscope, the circle of this hagioscope employing a diameter of 6～10cm is resistance to
Hot glass, described hagioscope is provided with insulation cover, and the edge of insulation cover is provided with gim peg, this gim peg and refractory heat-insulating
The hole arranged on layer is connected；
Described sample pusher is installed on the first sealing flange of body of heater, and this sample pusher is for sending into solid fuel
The inside of body of heater also gathers solid fuel ignition temperature；Described air inlet system and exhaust system are installed on first sealing flange and second of body of heater
On sealing flange, these air inlet system and exhaust system are for adjusting combustion atmosphere and the pressure of furnace interior；Described data collecting system is respectively
Being connected with air inlet system and exhaust system, sample pusher, this data collecting system is for gathering the combustion parameter of furnace interior.
Further improving as the present invention, described sample pusher includes seal plug, sealing ring, sample push rod
And handle, wherein: offering sample in the center of the first sealing flange and push hole, this sample is provided with sealing in pushing hole
Plug, this seal plug is sealed by sealing ring fixing, offers through hole in the inside of above-mentioned seal plug, in this through hole
Being provided with sample push rod, described sample push rod stretches into one end of furnace interior and is provided with solid fuel standing groove, and sample pushes away
The other end sending bar is provided with handle, and the inside of body of heater sent into by solid fuel by sample push rod by joystick；Fire at solid
Laying sample temperature thermocouple in material standing groove, the wire that connects of this sample temperature thermocouple passes the inside of sample push rod even
It is connected to thermocouple cold junction.
Further improving as the present invention, described air inlet system and exhaust system include admission line, outlet pipe, valve, gas
Steel cylinder and pressure controller, wherein: one end of described admission line is connected with gas bomb, the other end of admission line with
Second sealing flange is connected and is connected with furnace interior, and this admission line is provided with pressure controller；Described outlet pipe
One end be connected with the first sealing flange and be connected with furnace interior, this outlet pipe is provided with valve.
Further improving as the present invention, described data collecting system includes burner hearth temperature thermocouple, temperature data acquisition
Device, temperature controller, pressure sensor, pressure data collector, flue gas sampling pipe, flue gas analyzer and computer, wherein:
Described burner hearth temperature thermocouple is installed on the inside of body of heater, and this burner hearth temperature thermocouple is connected with temperature data acquisition device, sample
Product temperature thermocouple is also connected with temperature data acquisition device, and sample temperature thermocouple is used for gathering solid fuel ignition temperature, stove
Thorax temperature thermocouple is for gathering the internal temperature of body of heater；The two ends of heater strip are all connected with temperature controller, and this temperature controls
Device controls the internal temperature of body of heater by adjusting the power of heater strip；The arrival end of flue gas sampling pipe is installed on the inside of body of heater, should
Flue gas sampling pipe is connected to flue gas analyzer through the second sealing flange；The test side of pressure sensor is installed on the inside of body of heater,
The signal connecting line of this pressure sensor is connected to pressure data collector, above-mentioned pressure data collection through the second sealing flange
Device, flue gas analyzer, temperature controller, temperature data acquisition device are all connected with computer, the Stress control on admission line
Device is also connected with computer.
Further improving as the present invention, described heater strip is coil spring shape, and the annular between inner tube and outer tube adds
Hot chamber is evenly distributed with 4～10 heater strips, and hagioscope is positioned at the interstitial site of adjacent two heater strips, the diameter of heater strip
Being 6～8mm, described heater strip is nickel filament.
Further improving as the present invention, the first described sealing flange and the material of the second sealing flange are stainless steel material,
Flue gas sampling pipe, pressure sensor signal connecting line, admission line are provided with sealing ring at the second sealing flange, give vent to anger
Pipeline, burner hearth temperature thermocouple are provided with sealing ring at the first sealing flange.
3. beneficial effect
The technical scheme using the present invention to provide, compared with existing known technology, has the advantages that
(1) a kind of visual device being applied to solid fuel ignition study mechanism of the present invention, its sample pusher is for by solid
Fluid fuel sends into the inside of body of heater, and air inlet system and exhaust system are for adjusting combustion atmosphere and the pressure of furnace interior, and data collecting system is used
In the combustion parameter gathering furnace interior so that the gas componant of fuel combustion environment can be changed by simple operations, and pass through
Computer and pressure controller accurately control to adjust the pressure of furnace interior, it is achieved special at different atmosphere and combusting under pressure to fuel
The research of property, thus provide the foundation for probing into fuel combustion mechanism；Meanwhile, the temperature change of fuel, environment pressure can be recorded
Power change and smoke components, thus to studying fuel combustion mechanism and applying significant.
(2) a kind of visual device being applied to solid fuel ignition study mechanism of the present invention, reasonable in design, principle is simple,
It is easy to promote the use of.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of visual device being applied to solid fuel ignition study mechanism of the present invention；
Fig. 2 is the structural representation of body of heater in the present invention；
Fig. 3 is the structural representation of sample pusher in the present invention.
Label declaration in schematic diagram:
1, inner tube；2, outer tube；3, refractory insulating layer；4, hagioscope；5, insulation cover；6, heater strip；7-1, sample are surveyed
Warm galvanic couple；7-2, burner hearth temperature thermocouple；8, flue gas sampling pipe；9, pressure sensor；10, admission line；11, go out
Feed channel；12, valve；13, temperature data acquisition device；14, temperature controller；15, pressure data collector；16, cigarette
Gas analyzer；17, computer；18, gas bomb；19, seal plug；20, gim peg；21, sealing ring；22, sample
Product push rod；23, handle；24, thermocouple cold junction；25, the first sealing flange；26, the second sealing flange；27, pressure
Controller.
Detailed description of the invention
For further appreciating that present disclosure, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
Shown in Fig. 1, Fig. 2 and Fig. 3, a kind of visual device being applied to solid fuel ignition study mechanism of the present embodiment,
Mainly it is made up of body of heater, sample pusher, air inlet system and exhaust system and data collecting system etc..As in figure 2 it is shown, in the present embodiment
Body of heater include inner tube 1, outer tube 2, refractory insulating layer 3, hagioscope 4, insulation cover 5, heater strip 6, gim peg 20,
One sealing flange 25 and the second sealing flange 26, wherein: described inner tube 1 and outer tube 2 are coaxially disposed, at the two ends of body of heater
Portion is separately installed with the first sealing flange 25 and the second sealing flange 26, and the toroidal cavity formed between inner tube 1 and outer tube 2 is
Heating chamber, is evenly distributed with 6 heater strips 6, and hagioscope 4 is positioned at the gap digit of adjacent two heater strips 6 in this heating chamber
Putting, a diameter of 7mm of heater strip 6, described heater strip 5 is nickel filament, and heater strip 6 is coil spring shape, this heating
Silk 6 is arranged along the length direction of inner tube 1 central shaft, and the two ends of heater strip 6 are individually fixed at the first sealing flange 25 and second
On sealing flange 26.It is provided with refractory insulating layer 3 in the periphery of outer tube 2, described refractory insulating layer 3 is provided with hagioscope
4, this hagioscope 4 uses the circular heat resistant glass of a diameter of 8cm, described hagioscope 4 to be provided with insulation cover 5, at insulation cover
The edge of 5 is provided with gim peg 20, and this gim peg 20 is connected with the hole of setting on refractory insulating layer 3, can be opened by rotation
Open and close insulation cover 5, the present embodiment arranges refractory insulating layer 3, the high insulating effect of body of heater, and hagioscope 4 is provided with guarantor
Temperature lid 5, covers insulation cover 5, it is possible to reduce the radiation loss of body of heater when not observing.In the present embodiment, hagioscope 4 is positioned at adjacent
The interstitial site of two heater strips 6, will not block sight line because heater strip 6 generates heat shinny, and hagioscope 4 and refractory insulating layer
3 are flexibly connected by oscillating bearing, and hagioscope 4 is outside is provided with CCD high-speed camera, can rotate within the specific limits and spy on
Window 4, convenient adjustment viewing angle, such that it is able to be clearly viewed the sample situation of heating, the position of each thermocouple and operated
Journey etc..
Sample pusher is installed on the first sealing flange 25 of body of heater, and this sample pusher is for sending solid fuel into body of heater
Inside and gather solid fuel ignition temperature, the structure of sample pusher is as shown in Figure 3.Concrete sample in the present embodiment
Product pusher includes seal plug 19, sealing ring 21, sample push rod 22 and handle 23, wherein: at the first sealing flange
The center of 25 offers sample and pushes hole, and this sample is provided with seal plug 19 in pushing hole, and this seal plug 19 passes through
Sealing ring 21 seals fixing, offers through hole in the inside of above-mentioned seal plug 19, is provided with sample and pushes in this through hole
Bar 22, described sample push rod 22 stretches into one end of furnace interior and is provided with solid fuel standing groove, sample push rod 22
The other end is provided with handle 23, and the inside of body of heater sent into by solid fuel by sample push rod 22 by joystick 23；At solid
Laying sample temperature thermocouple 7-1 in fuel standing groove, the connection wire of this sample temperature thermocouple 7-1 passes sample push rod
22 be connected internally to thermocouple cold junction 24.
Air inlet system and exhaust system are installed on the first sealing flange 25 and second sealing flange 26 of body of heater, and these air inlet system and exhaust system are used for adjusting
The combustion atmosphere of whole furnace interior and pressure.Concrete air inlet system and exhaust system in the present embodiment include admission line 10, outlet pipe
11, valve 12, gas bomb 18 and pressure controller 27, wherein: one end of described admission line 10 and gas bomb
18 are connected, and the other end and second sealing flange 26 of admission line 10 are connected and are connected with furnace interior, this admission line
Pressure controller 27 is installed on 10；One end of described outlet pipe 11 is connected with the first sealing flange 25 and and furnace interior
It is connected, this outlet pipe 11 is provided with valve 12.Gas bomb 18 in the present embodiment is loaded with high pressure CO2Gas.
Data collecting system is connected with air inlet system and exhaust system, sample pusher respectively, and this data collecting system is used for gathering in body of heater
The combustion parameter in portion, can be with real time record and the display temperature change of fuel combustion, smoke components and the change of device internal pressure
Deng data message.Concrete data collecting system in the present embodiment includes burner hearth temperature thermocouple 7-2, temperature data acquisition device
13, temperature controller 14, pressure sensor 9, pressure data collector 15, flue gas sampling pipe 8, flue gas analyzer 16 and meter
Calculation machine 17, wherein: described burner hearth temperature thermocouple 7-2 is installed on the inside of body of heater, this burner hearth temperature thermocouple 7-2 and temperature
Degrees of data collector 13 is connected, and sample temperature thermocouple 7-1 is also connected with temperature data acquisition device 13, sample thermometric heat
Galvanic couple 7-1 is used for gathering solid fuel ignition temperature, and burner hearth temperature thermocouple 7-2 is for gathering the internal temperature of body of heater；Heating
The two ends of silk 6 are all connected with temperature controller 14, and this temperature controller 14 controls body of heater by adjusting the power of heater strip 6
Internal temperature；The arrival end of flue gas sampling pipe 8 is installed on the inside of body of heater, and this flue gas sampling pipe 8 is through the second sealing flange
26 are connected to flue gas analyzer 16；The test side of pressure sensor 9 is installed on the inside of body of heater, the signal of this pressure sensor 9
Connecting line is connected to pressure data collector 15 through the second sealing flange 26, and above-mentioned pressure data collector 15, flue gas divide
Analyzer 16, temperature controller 14, temperature data acquisition device 13 are all connected with computer 17, the pressure on admission line 10
Controller 27 is also connected with computer 17, therefore accurately can be controlled by pressure data collector 15 and pressure controller 27
Pressure in body of heater processed.The present embodiment is applied burner hearth temperature thermocouple 7-2 and temperature controller 14 comprehensively use, it is possible to achieve
The accurate control of furnace body temperature, it is ensured that stove body temperature constant, and the internal temperature of the body of heater detected is shown by computer 17
Show, temperature data can be read, in real time display and record, convenient accurate.In order to ensure the sealing of whole device, first is close
The material of envelope flange 25 and the second sealing flange 26 is stainless steel material, and flue gas sampling pipe 8, pressure sensor 9 signal connect
Line, admission line 10 are provided with sealing ring 21, outlet pipe 11, burner hearth temperature thermocouple at the second sealing flange 26
7-2 is provided with sealing ring 21 at the first sealing flange 25；And the two ends of heater strip 6 are individually fixed at the first sealing flange
25 and second the position of sealing flange 26 seal fixing also by sealing ring 21.
During use, weigh the 50nm aluminium powder of 1g, be placed in the solid fuel standing groove of sample push rod 22 front end, make
Obtain sample temperature thermocouple 7-1 to be fully embedded in aluminium powder sample.Rapidly sample is pushed to furnace interior, and passes through seal plug
Fuel sample is sealingly fastened in burner hearth by 19；The most slowly open CO2Gas bomb 18, when flue gas analyzer 16 shows O2
Close outlet pipe 11 when content is close to zero and pressure controller 27 set pressure as 0.5MPa, after pressure stabilisation, make
With computer 17, temperature controller 14 is carried out the regulation that heats up, with the heating rate of 15K/s, burner hearth is heated up, and use
CCD high-speed camera carries out record by hagioscope 4 to combustion flame propagation and the pattern of sample.Temperature data acquisition device 13
The data of sample temperature thermocouple 7-1 and burner hearth temperature thermocouple 7-2 are carried out record, and computer 17 is to temperature data acquisition device
13, the data of pressure data collector 15 and flue gas analyzer 16 carry out record.Nanometer aluminium powder fuel can be existed by the present embodiment
The CO of 0.5MPa2In ignition temperature, maximum temperature, flame pattern and product in ambiance, CO content is studied, and
Combustion product is placed under ESEM (SEM), transmission electron microscope (TEM) and X-ray diffraction (XRD) etc. and sees
Examine analysis, such that it is able to research 50nm aluminium powder is at CO2In combustion mechanism.
Embodiment 2
A kind of visual device being applied to solid fuel ignition study mechanism of the present embodiment, its basic structure is with embodiment 1, no
It is with part: the ring-shaped heating cavity between inner tube 1 and outer tube 2 is evenly distributed with 4 heater strips 6, heater strip 6
A diameter of 8mm, hagioscope 4 uses the circular heat resistant glass of a diameter of 10cm, and uses argon gas (Ar) steel cylinder as gas
Steel cylinder 18 is attached with admission line 10.
During use, weigh the aluminium containing 0%, 2%, 4%, 6%, 8% ammonium perchlorate (the AP)/water base high energy combustion of 1g respectively
Material, is placed in the solid fuel standing groove of sample push rod 22 front end so that sample temperature thermocouple 7-1 is fully embedded sample
In product.Rapidly sample is pushed to furnace interior, and by seal plug 19, fuel sample is sealingly fastened in burner hearth；Then
Slowly open Ar gas bomb 18, when flue gas analyzer 16 shows O2Close gas bomb 18 when content is close to zero and give vent to anger
Pipeline 11, heats up to burner hearth with the heating rate of 15K/s, and uses CCD high-speed camera by hagioscope 4 to sample
The combustion flame propagation of product and pattern carry out record.Temperature data acquisition device 13 is to sample temperature thermocouple 7-1 and burner hearth thermometric warm
The data of galvanic couple 7-2 carry out record, and computer 17 is to temperature data acquisition device 13, pressure data collector 15 and flue gas analysis
The data of instrument 16 carry out record.The present embodiment can be to the aluminium of different content ammonium perchlorate additive resulted/water base high-energy fuel at one
Ignition temperature in the Ar ambiance of atmospheric pressure, maximum temperature, flame pattern are studied, and pressure in the burner hearth is changed into
Row conversion, and fuel combustion products is scanned respectively Electronic Speculum (SEM), transmission electron microscope (TEM) and X-ray diffraction
(XRD) the lower observation analysis such as, it can be deduced that additive to aluminium/water base high-energy fuel combustion characteristics, specific impulse and Related Mechanism, for
The application of research aluminium/water base high-energy fuel lays the foundation.
Embodiment 3
A kind of visual device being applied to solid fuel ignition study mechanism of the present embodiment, its basic structure is with embodiment 1, no
It is with part: the ring-shaped heating cavity between inner tube 1 and outer tube 2 is evenly distributed with 10 heater strips 6, heater strip 6
A diameter of 6mm, hagioscope 4 uses the circular heat resistant glass of a diameter of 6cm, and uses argon gas (Ar) steel cylinder as gas steel
Bottle 18 is attached with admission line 10.
During use, weigh the aluminium/water base high-energy fuel of 1g, be placed in the solid fuel standing groove of sample push rod 22 front end,
Sample temperature thermocouple 7-1 is fully embedded in sample.Rapidly sample is pushed to furnace interior, and by seal plug 19
Fuel sample is sealingly fastened in burner hearth；The most slowly open Ar gas bomb 18, when flue gas analyzer 16 shows O2Contain
Amount closes outlet pipe 11 when being close to zero, and pressure controller 27 is respectively set as 0.1MPa, 0.5MPa, 1.0MPa,
1.5MPa, 2.0MPa, heat up to burner hearth with the heating rate of 20K/s, and uses CCD high-speed camera by spying on
Window 4 carries out record to combustion flame propagation and the pattern of sample.Temperature data acquisition device 13 is to sample temperature thermocouple 7-1 and stove
The data of thorax temperature thermocouple 7-2 carry out record, and computer 17 is to temperature data acquisition device 13, pressure data collector 15 and
The data of flue gas analyzer 16 carry out record.The present embodiment can be to the aluminium under different pressures/water base high-energy fuel at inert gas
Ignition temperature under environment, maximum temperature, flame pattern are studied, and convert pressure in the burner hearth change, and to combustion
Material combustion product is scanned under Electronic Speculum (SEM), transmission electron microscope (TEM) and X-ray diffraction (XRD) etc. seeing respectively
Examine analysis, pressure factor can be probed into aluminium/water base high-energy fuel is burnt and the Influencing Mechanism of specific impulse, and be obtained by digital simulation
The pressure Intrusion Index to fuel combustion characteristics.
Schematically being described the present invention and embodiment thereof above, this description does not has restricted, shown in accompanying drawing yet
Simply one of embodiments of the present invention, actual structure is not limited thereto.So, if those of ordinary skill in the art
Enlightened by it, in the case of without departing from the invention objective, design the knot similar to this technical scheme without creative
Structure mode and embodiment, all should belong to protection scope of the present invention.
Claims (3)
1. it is applied to a visual device for solid fuel ignition study mechanism, including body of heater, it is characterised in that also include sample
Pusher, air inlet system and exhaust system and data collecting system, wherein:
Described body of heater includes inner tube (1), outer tube (2), refractory insulating layer (3), hagioscope (4), insulation cover (5), adds
Heated filament (6), gim peg (20), the first sealing flange (25) and the second sealing flange (26), wherein: described inner tube (1)
It is coaxially disposed with outer tube (2), is separately installed with the first sealing flange (25) and the second sealing flange (26) at the both ends of body of heater,
The toroidal cavity formed between inner tube (1) and outer tube (2) is heating chamber, is provided with four or more than four in this heating chamber
Heater strip (6), this heater strip (6) is arranged along the length direction of inner tube (1) central shaft, and the two ends of heater strip (6) are each
It is fixed on the first sealing flange (25) and the second sealing flange (26)；The periphery of outer tube (2) is provided with refractory insulating layer
(3), described refractory insulating layer (3) being provided with hagioscope (4), this hagioscope (4) uses a diameter of 6～10cm
Circular heat resistant glass, described hagioscope (4) is provided with insulation cover (5), the edge of insulation cover (5) is provided with gim peg
(20), this gim peg (20) hole of arranging upper with refractory insulating layer (3) is connected；
Described sample pusher is installed on first sealing flange (25) of body of heater, and this sample pusher is for by solid fuel
Send into the inside of body of heater and gather solid fuel ignition temperature；Described sample pusher includes seal plug (19), sealing ring
(21), sample push rod (22) and handle (23), wherein: offer sample in the center of the first sealing flange (25)
Product push hole, and this sample is provided with seal plug (19) in pushing hole, and this seal plug (19) is sealed by sealing ring (21)
Fixing, offer through hole in the inside of above-mentioned seal plug (19), sample push rod (22), institute are installed in this through hole
The sample push rod (22) stated stretches into one end of furnace interior and is provided with solid fuel standing groove, sample push rod (22) another
One end is provided with handle (23), and the inside of body of heater sent into by solid fuel by sample push rod (22) by joystick (23)；
Laying sample temperature thermocouple (7-1) in solid fuel standing groove, the connection wire of this sample temperature thermocouple (7-1) is worn
That crosses sample push rod (22) is connected internally to thermocouple cold junction (24)；
Described air inlet system and exhaust system are installed on the first sealing flange (25) and second sealing flange (26) of body of heater, and this enters row
Gas system is for adjusting combustion atmosphere and the pressure of furnace interior；Described air inlet system and exhaust system include admission line (10), escape pipe
Road (11), valve (12), gas bomb (18) and pressure controller (27), wherein: described admission line (10)
One end is connected with gas bomb (18), and the other end of admission line (10) and the second sealing flange (26) are connected and and stove
Internal portion is connected, and this admission line (10) is provided with pressure controller (27)；One end of described outlet pipe (11)
It is connected with the first sealing flange (25) and is connected with furnace interior, this outlet pipe (11) is provided with valve (12)；
Described data collecting system is connected with air inlet system and exhaust system, sample pusher respectively, and this data collecting system is used for gathering
The combustion parameter of furnace interior；Described data collecting system include burner hearth temperature thermocouple (7-2), temperature data acquisition device (13),
Temperature controller (14), pressure sensor (9), pressure data collector (15), flue gas sampling pipe (8), flue gas analyzer
(16) and computer (17), wherein: described burner hearth temperature thermocouple (7-2) is installed on the inside of body of heater, this burner hearth is surveyed
Warm galvanic couple (7-2) is connected with temperature data acquisition device (13), and sample temperature thermocouple (7-1) is also adopted with temperature data
Storage (13) is connected, and sample temperature thermocouple (7-1) is used for gathering solid fuel ignition temperature, burner hearth temperature thermocouple (7-2)
For gathering the internal temperature of body of heater；The two ends of heater strip (6) are all connected with temperature controller (14), this temperature controller
(14) internal temperature of body of heater is controlled by adjusting the power of heater strip (6)；The arrival end of flue gas sampling pipe (8) is installed on
The inside of body of heater, this flue gas sampling pipe (8) is connected to flue gas analyzer (16) through the second sealing flange (26)；Pressure passes
The test side of sensor (9) is installed on the inside of body of heater, and the signal connecting line of this pressure sensor (9) passes the second sealing flange
(26) pressure data collector (15) it is connected to, above-mentioned pressure data collector (15), flue gas analyzer (16), temperature
Controller (14), temperature data acquisition device (13) are all connected with computer (17), the pressure control on admission line (10)
Device processed (27) is also connected with computer (17).
A kind of visual device being applied to solid fuel ignition study mechanism the most according to claim 1, it is characterised in that:
Described heater strip (6) is coil spring shape, is evenly distributed with in the ring-shaped heating cavity between inner tube (1) and outer tube (2)
4～10 heater strips (6), and hagioscope (4) is positioned at the interstitial site of adjacent two heater strips (6), heater strip (6)
A diameter of 6～8mm, described heater strip (5) is nickel filament.
A kind of visual device being applied to solid fuel ignition study mechanism the most according to claim 2, it is characterised in that:
Described the first sealing flange (25) and the material of the second sealing flange (26) they are stainless steel material, flue gas sampling pipe (8),
Pressure sensor (9) signal connecting line, admission line (10) are provided with sealing ring (21) through the second sealing flange (26) place,
Outlet pipe (11), burner hearth temperature thermocouple (7-2) are provided with sealing ring (21) through the first sealing flange (25) place.
Priority Applications (1)
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