CN109270209A - Phosphine gas fumigates grain various factors coupling under environment and ignites mechanism research experiment platform - Google Patents
Phosphine gas fumigates grain various factors coupling under environment and ignites mechanism research experiment platform Download PDFInfo
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- CN109270209A CN109270209A CN201811201347.7A CN201811201347A CN109270209A CN 109270209 A CN109270209 A CN 109270209A CN 201811201347 A CN201811201347 A CN 201811201347A CN 109270209 A CN109270209 A CN 109270209A
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- phosphine
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- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 title claims abstract description 175
- 229910000073 phosphorus hydride Inorganic materials 0.000 title claims abstract description 86
- 238000002474 experimental method Methods 0.000 title claims abstract description 40
- 230000007246 mechanism Effects 0.000 title claims abstract description 27
- 230000008878 coupling Effects 0.000 title claims abstract description 24
- 238000010168 coupling process Methods 0.000 title claims abstract description 24
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 24
- 238000011160 research Methods 0.000 title claims abstract description 15
- 239000007789 gas Substances 0.000 claims abstract description 139
- 238000005485 electric heating Methods 0.000 claims abstract description 26
- 239000000779 smoke Substances 0.000 claims abstract description 15
- 239000003517 fume Substances 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 235000013339 cereals Nutrition 0.000 claims description 146
- 238000012360 testing method Methods 0.000 claims description 14
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 7
- 238000010892 electric spark Methods 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 4
- 239000001569 carbon dioxide Substances 0.000 claims description 4
- 238000010304 firing Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 239000011214 refractory ceramic Substances 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims description 2
- 235000007164 Oryza sativa Nutrition 0.000 claims description 2
- 240000006394 Sorghum bicolor Species 0.000 claims description 2
- 235000011684 Sorghum saccharatum Nutrition 0.000 claims description 2
- 235000021307 Triticum Nutrition 0.000 claims description 2
- 244000098338 Triticum aestivum Species 0.000 claims description 2
- 240000008042 Zea mays Species 0.000 claims description 2
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 2
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 2
- 235000019504 cigarettes Nutrition 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 235000005822 corn Nutrition 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims description 2
- 235000009566 rice Nutrition 0.000 claims description 2
- 231100000331 toxic Toxicity 0.000 claims description 2
- 230000002588 toxic effect Effects 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 230000000505 pernicious effect Effects 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 238000003958 fumigation Methods 0.000 abstract description 4
- 238000005457 optimization Methods 0.000 abstract description 2
- 230000001808 coupling effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 230000002265 prevention Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000002737 fuel gas Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 3
- 241000607479 Yersinia pestis Species 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000004320 controlled atmosphere Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000000749 insecticidal effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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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- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Molecular Biology (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
It fumigates grain various factors coupling under environment the invention discloses a kind of phosphine gas to ignite mechanism research experiment platform, including the grain containers for containing grain to be measured；Hydrogen phosphide for simulating phosphine fumigation environment prepares generator and phosphine gas effuser；For heating the electric heating plate of grain to be measured；Sparker for igniting；For acquiring thermocouple beam, temperature collecting module, gas sensor group, gas concentration acquisition module, electronic balance, computer and the high-definition camera of grain stacking inside and outside parameter to be measured；Exhaust fume collecting hood, smoke discharging pipe and smoke exhaust fan for smoke evacuation.This experiment porch by regulation to key parameters such as phosphine gas concentration, hot-spot source power, spark ignition power with combine, it discloses phosphine gas in silo and fumigates the grain that various factors coupling effect is lower under environment and ignite mechanism, the global optimization and progress of promotion silo Hot disaster control prece.
Description
Technical field
The present invention relates to silo fire prevention and control fields, fumigate grain under environment more specifically to a kind of phosphine gas
Food various factors coupling ignites mechanism research experiment platform.
Background technique
The safe storage of grain is concerning the national people's livelihood matter of fundamental importance.Grain is pest control, avoids grain during silo stores
It mildews rotten, needs periodically to carry out stifling deinsectization using hydrogen phosphide or other gases.Grain fumigating is carried out, the same of insect pest is being eliminated
When, due to directly inputting certain density fuel gas, it often will increase the fire risk of silo.This is because: on the one hand,
Phosphine gas itself is inflammable；On the other hand, if grain is because a variety of causes is thermally decomposed, fuel gas, Duo Zhongke will also be generated
Combustion gas mixing reaches a certain concentration, once encountering incendiary source, then easily causes silo fire, causes huge economic loss.Mesh
Before, about the prior art of silo safe prevention, mainly for efficiently the producing of phosphine gas, grain fumigating efficiency improve with
And controlled atmosphere etc. of divulging information in silo is (such as: Chinese patent 201720227508.4, Chinese patent 201810236136.0, China
Patent 201621232327.2 and periodical " grain and feed " the 12nd page 14 to page 16 of article of phase in 2017 are " tall and big shallow
Circle storehouse hydrogen phosphide mixing recirculation fumigation insecticidal technology research "), it is new in terms of the prevention and treatment of research silo Hot disaster and fire prevention
Method and new technology lack.The present invention proposes that a kind of research phosphine gas fumigates grain various factors coupling under environment and ignites mechanism
New method, to disclose the mechanism of igniting of grain during this.It is proposed and application of the invention is conducive to improve the hot calamity of silo
The prevention of evil accident is horizontal, protects grain.
Summary of the invention
Grain various factors coupling under environment is fumigated the object of the present invention is to provide a kind of phosphine gas to ignite mechanism study
Experiment porch.The experiment porch by by phosphine gas pass through positioned at grain containers bottom phosphine gas effuser be passed through to
It surveys in grain, analog phosphine gas fumigates the process of grain；In the adjustable electric heating plate of grain containers bottom installation power,
Local heating's process of varying strength in analog grain to be measured；In grain containers, grain upper surface to be measured is placed around
Gas sensor group carries out real-time monitoring to the position multiple gases concentration；Grain upper surface to be measured center in grain containers
It is placed around sparker, it is possible to provide the electric spark of different capacity.It, can be with comprehensive simulation and research by the experiment porch
Carry out in silo phosphine gas it is stifling when various factors coupling ignite mechanism, determine that the grain under different condition ignites criterion.
The technical solution adopted by the present invention are as follows: a kind of phosphine gas fumigates grain various factors coupling under environment and ignites mechanism
Research experiment platform, including a grain containers, the grain containers are interior to contain grain to be measured, the grain bottom to be measured
One phosphine gas effuser is set, and the pipeline other end connected with the phosphine gas effuser outlet connect concentration
Adjustable phosphine gas prepares generator.Thermocouple beam is inserted into the grain to be measured, for measuring inside grain to be measured
Temperature change.The grain upper surface to be measured is placed around the sparker of a power adjustable, the electric spark
Generator is connected with first voltage adjuster.The grain containers bottom is installed by one electric heating plate, the electric heating plate
It is connected with second voltage adjuster.Grain upper surface location to be measured in the grain containers installs gas sensor group.
The thermocouple beam accesses computer by temperature data acquisition module, carries out the real-time acquisition and storage of temperature data.Institute
The gas sensor group stated accesses computer by gas concentration data acquisition module, carries out the real-time acquisition of gas concentration data
And storage.The grain containers upper side places a high-definition camera.The branch that the grain containers are welded by outer wall
Frame is placed on one block of hard heat-insulating plate, places an electronic balance, the electronic balance below the hard heat-insulating plate
Computer is connected to real-time acquisition and storage qualitative data.The adjustable phosphine gas preparation of the grain containers and concentration
Generator is located at below an exhaust fume collecting hood, and the tail portion of the exhaust fume collecting hood is connected with the smoke discharging pipe for being equipped with smoke exhaust fan, real
The toxic and harmful gas and combustion product gases generated during testing can be collected by exhaust fume collecting hood and be discharged through smoke discharging pipe.
The grain containers are generally cylindrical.Its outer wall is metal material, and inner wall is certain thickness high temperature resistant material
Material, the bottom plate and electric heating plate of bottom installation can be freely disassembled.
Certain thickness refractory ceramics is covered outside the electric heating plate, avoids phosphine gas straight with high-temperature metal
Contact reacts.The electric heating plate the center point has circular open, and size is greater than bottom plate opening and phosphine gas
Effuser pipe diameter so that phosphine gas effuser avoids being in direct contact with it when passing through electric heating plate from bottom, and stays
Set enough spaces.
The phosphine gas prepares generator, and with exporting, phosphine gas concentration is adjustable, flow quality flow rate is adjustable
Etc. functions.
The vertical height of the sparker is adjustable, when guaranteeing that grain containers contain different height grain to be measured,
The sparker is always positioned at close to grain upper surface to be measured and discontiguous position.The sparker and
One voltage regulator is connected, so that the firing power of sparker is adjustable.
The gas sensor group include phosphine gas sensor, methane gas sensor, ethane gas sensor,
CO gas sensor, carbon dioxide gas sensor, the concentration to gas with various ingredient during measurement experiment.Institute
Height of the gas sensor group stated in grain containers is adjustable, to adapt under the conditions of various differences grain ulking thickness to be measured
Experiment measurement.
The thermocouple beam has several beams, and every beam thermocouple beam is made of several thermocouples, can measure grain appearance
In device in grain stacking to be measured several different locations temperature.The temperature measuring point of several different locations constitutes a temperature
Calculation matrix can describe temperature inside grain stacking to be measured according to the data reconstruction grain stacking internal temperature field to be measured of acquisition
The change in time and space of degree.
The phosphine gas effuser endcapped protruded into grain stacking to be measured, if pipe end side is provided with
Dry aperture flows out phosphine gas along surrounding horizontal direction, extends residence time of the phosphine gas in grain to be measured, makes
Diffusion of the phosphine gas in grain stacking to be measured is more evenly.
The grain to be measured is all kinds of grains being stored in silo, comprising: wheat, rice, corn, sorghum.
There are two the function of the hard heat-insulating plate is main, first is that support and stable grain containers and its auxiliary equipment, two
It is to avoid electronic balance heat damage in experimentation.
As seen from the above technical solution provided by the invention, phosphine gas provided by the invention fumigates grain under environment
Food various factors coupling ignites mechanism research experiment platform, simulates all kinds of fire typical case inducements under silo grain fumigating environment, i.e.,
The fuel gas (stifling phosphine gas and grain pyrolysis gas) in two kinds of sources under grain fumigating environment, hot-spot
The various factors couplings fire hazard such as source (internal heat) and incendiary source (electrical spark).It is tested using the experimental bench,
It is multifactor can to study grain under the stifling environment of phosphine gas for the data such as temperature, quality, combustable gas concentration by acquisition
Mechanism of igniting is coupled, provides the reference and foundation of science for fire prevention, detection and the fighting under grain fumigation environment.
With existing Technical comparing, the present invention is had the advantage that
(1) this experiment porch realizes the comprehensive simulation of grain Hot disaster typical case's inducement in silo, these typical inducement packets
It includes: phosphine fumigation gas, hot-spot source, electric spark, and representative gases sensor is laid near grain upper surface to be measured,
It is analyzed and is studied by the multiple combinations of single inducement and multiple inducements, can carried out more under the stifling environment of phosphine gas in silo
Grain when factor coupling ignites mechanism study.And pass through phosphine gas concentration, hot-spot source power, electric spark function
The regulation of the key parameters such as rate with combine, quantitatively can provide critical ignite of various grains under the conditions of different Hot disaster inducements and sentence
According to, then provide silo Hot disaster prevention and treatment key link and effective measures.Measuring technique based on this experiment porch can push
The global optimization and progress of silo Hot disaster control prece promote the perfect of silo safety management specification.
(2) sparker that is laid in this experiment porch near above grain to be measured and gas sensor group's is upper
Lower position is adjustable, measurement position can be adjusted flexibly according to the difference of grain ulking thickness to be measured, is conducive to analyze grain appearance
Grain ulking thickness to be measured ignites to it influence of criterion in device, promotes grain to be measured to ignite the detailed determination of criterion, and push
The fuel gas diffusion mechanism research formed during local heating in grain stacking to be measured and its influence point to ignition Process
Analysis.
(3) measuring system of this experiment porch is perfect, can obtain the number such as ignitor firing time, temperature, quality, gas concentration
According to.By the integrated treatment to Various types of data such as temperature, quality, gas concentrations, experiment information abundant can be obtained；In addition,
The mutual support and comparison of all data, can more accurately reflect the process of grain to be measured burning in test, thus into one
Walk confirmatory experiment conclusion.
(4) bottom plate and electric heating plate of the grain containers of this experiment porch are detachable, and the grain residue after testing can be
It is voluntarily fallen after bottom plate and electric heating plate disassembly, the cleaning and recovery after making experiment are more conveniently and quickly.
Detailed description of the invention
Fig. 1 is that phosphine gas fumigates grain various factors coupling under environment and ignites mechanism research experiment platform schematic diagram.
Fig. 2 is that phosphine gas fumigates grain various factors coupling under environment and ignites the grain containers of mechanism research experiment platform
Partial schematic diagram.
Wherein, 1 is grain containers, and 2 be grain to be measured, and 3 be high-definition camera, and 4 be sparker, and 5 be the first electricity
Adjuster is pressed, 6 be gas sensor group, and 7 be gas concentration acquisition module, and 8 be computer, and 9 be thermocouple beam, and 10 adopt for temperature
Collect module, 11 be bottom plate, and 12 be second voltage adjuster, and 13 be electric heating plate, and 14 be phosphine gas effuser, and 15 be rubber
Pipe, 16 prepare generator for phosphine gas, and 17 be bracket, and 18 be hard heat-insulating plate, and 19 be electronic balance, and 20 be exhaust fume collecting hood,
21 be smoke discharging pipe, and 22 be smoke exhaust fan.
Specific embodiment
Below in conjunction with Detailed description of the invention a specific embodiment of the invention.
As depicted in figs. 1 and 2, it is flat to fumigate the mechanism research experiment that ignites of grain various factors coupling under environment for phosphine gas
Platform, cylindrical 1 interior diameter 20cm of grain containers, deep 10cm, the internal layer of side wall is the ceramic beaverboard of 5mm thickness, and outer layer is that 1mm is thick
Stainless steel, inside be loaded with the grain to be measured 2 of certain mass.A high definition is placed in the upper side of grain containers 1 to take the photograph
Camera 3, the overall condition for recording materials ignition Process.Sparker 4 is installed on the top of grain containers 1,
Discharge tip is located at after adjusting close to 2 upper surface of grain to be measured and discontiguous position.The sparker 4 and
One voltage regulator 5 is connected, to adjust the firing power of sparker 4.The table on grain 2 to be measured in grain containers 1
Install gas sensor group 6 for face position, and gas sensor group 6 accesses computer 8 by gas concentration data acquisition module 7.To
It surveys in a radius section of grain 2 and is inserted perpendicularly into thermocouple beam 9,5 thermocouples of every beam, from 2 upper surface of grain to be measured the bottom of to
Face perpendicular bisected is inserted into 5 positions of internal different depth.5 beam thermocouple beams 9 are calculated by the connection of temperature collecting module 10
Machine 8.There is the aperture of a diameter 10mm at 11 center of bottom plate of grain containers 1, places one above bottom plate 11 and be connected with second
The electric heating plate 13 of voltage regulator 12, having a diameter at 13 center of electric heating plate is the aperture of 30mm.Bottom plate 11 and electric heating
Disk 13 is detachable.Phosphine gas effuser 14 passes sequentially through bottom plate 11 from below, 13 center opening of electric heating plate is vertically stretched
Enter in grain 2 to be measured.Phosphine gas effuser 14 prepares generator 16 with phosphine gas by one section of rubber tube 15 and is connected.
The bracket 17 that grain containers 1 are welded by outer wall is placed on one block of hard heat-insulating plate 18, places below hard heat-insulating plate 18
One electronic balance 19, electronic balance 19 are connect by data line with computer 8.A whole set of experimental provision in addition to computer 8 is all
It is placed in experiment, top is equipped with exhaust fume collecting hood 20 of the level cross-sectionn having a size of 5m × 5m, above-mentioned grain between experiment
Container 1 and phosphine gas prepare generator 16 and are all located at 20 lower section of exhaust fume collecting hood, test flue gas and phosphine gas and pass through collection cigarette
Between cover 20, smoke discharging pipe 21 and the discharge experiment of smoke exhaust fan 22.Computer 8 is between being placed in and testing in adjacent operation room.
Thermocouple beam 9 in the present embodiment, totally 5 beam, is uniformly distributed in the radius section of grain containers 1；Every beam thermocouple
Beam includes the thermocouple of 5 diameter 1mm, is vertically equidistantly inserted into 2 inside different depth of grain to be measured.5 beam thermocouple beams 9 totally 25
Thermocouple forms one 5 × 5 temperature calculation matrix in a radius section of grain containers 1, by the cross-section temperature field
Reconstruct, can reflect in experimentation the temperature field evolution process in entire grain containers 1 inside grain 2 to be measured.
Gas sensor group 6 in the present embodiment includes phosphine gas sensor, methane gas sensor, ethane gas
Sensor, CO gas sensor, carbon dioxide gas sensor, to gas with various ingredient during measurement experiment
Concentration.Height of the gas sensor group 6 in grain containers 1 is adjustable, to adapt to accumulate under depth in various differences grain 2 to be measured
Experiment measurement.
Electric heating plate 13 in the present embodiment, is placed on bottom plate 11, and inside is heating wire, and outside is by certain thickness resistance to
Refractory ceramics, which covers, to be wrapped up in, and phosphine gas is avoided to chemically react with red-hot heating wire.There are diameters at electric heating plate 13 center
The aperture of 3cm passes through for phosphine gas effuser 14, and the enough spaces of indwelling, avoids the part of phosphine gas effuser 14
Overheat.
Phosphine gas effuser 14 in the present embodiment passes sequentially through bottom plate 11, and the aperture at 13 center of electric heating plate is protruded into
In grain 2 to be measured, and make on phosphine gas effuser 14 along apart from 11 3cm of bottom plate.The phosphine gas effuser
14 be the ceramic tube of outer diameter 1cm, and the closing of pipe end end face, pipe end side is provided with 6 apertures, can make phosphine gas
It is sprayed along surrounding horizontal direction, extends residence time of the phosphine gas in 2 stacking of grain to be measured, expand phosphine gas
It dissipates more evenly.
Phosphine gas in the present embodiment prepares generator 16, and the gas prepared is carbon dioxide and phosphine gas
Mixed gas, and can control its gas and flow and concentration occur.
When being tested, experimenter has dressed breathing mask, first turns on smoke exhaust fan 22, and regulate first respectively
Voltage regulator 5 and second voltage adjuster 12 make sparker 4 and electric heating plate 13 reach experiment setting power, adjust
The power supply of two voltage regulators is closed after the completion of section.Then, adjust and fix the position of thermocouple beam 9.Then, electricity is opened
Sub- balance 19, then the grain to be measured 2 that is slow, equably loading certain mass in grain containers 1, notice that grain 2 to be measured loads
The position of immutable thermocouple beam 9 in the process.After grain 2 to be measured loads completion, the height of electric spark igniter 4 is adjusted
Degree, makes its discharge tip close to 2 upper surface of grain to be measured and does not contact.Later, high-definition camera 3 is opened, is started
Record experiment video；Temperature, quality and gas concentration data acquisition program in computer 8 are opened, data acquisition is started；Open the
One voltage regulator 5, starts to light a fire；Second voltage adjuster 12 is opened, is begun to warm up；It opens phosphine gas and prepares generator
16, start to be passed through phosphine gas.
At the end of experiment, the data such as the temperature, concentration, quality of experiment are kept first.It is real after waiting long enough for
The personnel of testing wear a gas mask into phosphine gas preparation hair device 16 between experiment, is first closed, and stop the preparation of phosphine gas
With input.Then, high-definition camera 3 is closed.Then, first voltage adjuster 5 and second voltage adjuster 12, halt are closed
Fire and heating, leave between experiment.After waiting 15 minutes, experimenter wears a gas mask, to residual after grain 2 to be measured experiment
Remaining situation is taken pictures and is recorded.After all records finish, lower plate 11 and electric heating plate 13, cleaned grain residue are unloaded.Later, will
Each components of device are orderly well placed, and close smoke exhaust fan, close laboratory other equipment power supply, are left between experiment.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Within the technical scope of the present disclosure, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the scope of protection of the present invention.Therefore, protection scope of the present invention should be with the protection scope of claims
Subject to.
Claims (10)
1. a kind of phosphine gas fumigates grain various factors coupling under environment and ignites mechanism research experiment platform, it is characterised in that:
Including a grain containers, grain to be measured is contained in the grain containers, a phosphatization is arranged in the grain bottom to be measured
Hydrogen effuser, the pipeline other end being connected with the phosphine gas effuser connect the adjustable phosphine gas of concentration
Prepare generator；Thermocouple beam is inserted into the grain to be measured, for measuring grain internal temperature variation to be measured；It is described to
Survey the sparker that grain upper surface is placed around a power adjustable, the sparker and first voltage tune
Device is saved to be connected；The grain containers bottom is installed by one electric heating plate, the electric heating plate and second voltage adjuster phase
Even；Grain upper surface location to be measured in the grain containers installs gas sensor group；The thermocouple beam passes through
Temperature data acquisition module accesses computer, carries out the real-time acquisition and storage of temperature data；The gas sensor group is logical
Gas concentration data acquisition module access computer is crossed, the real-time acquisition and storage of gas concentration data is carried out；The grain
Container upper side places a high-definition camera；The grain containers by the bracket that outer wall welds be placed on one piece of hard every
On hot plate, an electronic balance is placed below the hard heat-insulating plate, the electronic balance connection computer is to real-time
Acquisition and storage qualitative data；The adjustable phosphine gas of grain containers and concentration prepares generator and is located at a collection cigarette
Cover lower section, the tail portion of the exhaust fume collecting hood are connected with the smoke discharging pipe for being equipped with smoke exhaust fan, and what is generated in experimentation is toxic
Pernicious gas and combustion product gases can be collected by exhaust fume collecting hood and are discharged through smoke discharging pipe.
2. a kind of phosphine gas according to claim 1 fumigate environment under grain various factors coupling ignite mechanism study reality
Test platform, it is characterised in that: the grain containers are generally cylindrical, and outer wall is metal material, and inner wall is certain thickness
Heat-resisting material, bottom installation bottom plate and electric heating plate can be freely disassembled.
3. a kind of phosphine gas according to claim 1 fumigate environment under grain various factors coupling ignite mechanism study reality
Test platform, it is characterised in that: certain thickness refractory ceramics is covered outside the electric heating plate, avoid phosphine gas with
High-temperature metal is directly contacted and is reacted；The electric heating plate the center point has a circular open, size be greater than bottom plate opening and
Phosphine gas effuser pipe diameter, so that phosphine gas effuser avoids directly when passing through electric heating plate from bottom
Contact, and the enough spaces of indwelling.
4. a kind of phosphine gas according to claim 1 fumigate environment under grain various factors coupling ignite mechanism study reality
Test platform, it is characterised in that: the phosphine gas, which prepares generator, to be had output phosphine gas concentration is adjustable, air-flow matter
Measure flow rate adjustable function.
5. a kind of phosphine gas according to claim 1 fumigate environment under grain various factors coupling ignite mechanism study reality
Test platform, it is characterised in that: the vertical height of the sparker is adjustable, waits for guarantee that grain containers contain different height
When surveying grain, which is always positioned at close to grain upper surface to be measured and discontiguous position, the electric spark
Generator is connected with first voltage adjuster, so that the firing power of sparker is adjustable.
6. a kind of phosphine gas according to claim 1 fumigate environment under grain various factors coupling ignite mechanism study reality
Test platform, it is characterised in that: the gas sensor group includes phosphine gas sensor, methane gas sensor, ethane
Gas sensor, CO gas sensor, carbon dioxide gas sensor, to gas with various during measurement experiment at
The concentration divided, height of the gas sensor group in grain containers is adjustable, to adapt in various differences grain heap to be measured
Experiment measurement under product thickness condition.
7. a kind of phosphine gas according to claim 1 fumigate environment under grain various factors coupling ignite mechanism study reality
Test platform, it is characterised in that: the thermocouple beam there are several beams, and every beam thermocouple beam is made of several thermocouples, can be with
Measure the temperature of several different locations in grain stacking to be measured in grain containers；The temperature measuring point of several different locations is constituted
One temperature calculation matrix, can describe grain to be measured according to the data reconstruction grain stacking internal temperature field to be measured of acquisition
The change in time and space of stacking internal temperature.
8. a kind of phosphine gas according to claim 1 fumigate environment under grain various factors coupling ignite mechanism study reality
Test platform, it is characterised in that: protrude into the phosphine gas effuser endcapped in grain stacking to be measured, pipe end side is opened
There are several apertures, flow out phosphine gas along surrounding horizontal direction, when extending delay of the phosphine gas in grain to be measured
Between, make diffusion of the phosphine gas in grain stacking to be measured more evenly.
9. a kind of phosphine gas according to claim 1 fumigate environment under grain various factors coupling ignite mechanism study reality
Test platform, it is characterised in that: the grain to be measured is all kinds of grains being stored in silo, comprising: wheat, rice, corn,
Sorghum.
10. a kind of phosphine gas according to claim 1 fumigates grain various factors coupling under environment and ignites mechanism study
Experiment porch, it is characterised in that: there are two the function of the hard heat-insulating plate is main, first is that support and stablize grain containers and its
Auxiliary equipment, second is that avoiding electronic balance heat damage in experimentation.
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| CN115451426A (en) * | 2022-08-27 | 2022-12-09 | 浙江大学 | Method for accurately measuring ignition energy of energy-containing fuel |
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