CN106197517B - A kind of Dual-Phrase Distribution of Gas olid simulating test device and relative concentration method of calibration - Google Patents
A kind of Dual-Phrase Distribution of Gas olid simulating test device and relative concentration method of calibration Download PDFInfo
- Publication number
- CN106197517B CN106197517B CN201610530878.5A CN201610530878A CN106197517B CN 106197517 B CN106197517 B CN 106197517B CN 201610530878 A CN201610530878 A CN 201610530878A CN 106197517 B CN106197517 B CN 106197517B
- Authority
- CN
- China
- Prior art keywords
- dual
- pipeline
- gas
- phrase distribution
- gas olid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 88
- 238000009826 distribution Methods 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000002474 experimental method Methods 0.000 claims abstract description 69
- 239000000843 powder Substances 0.000 claims abstract description 30
- 238000005507 spraying Methods 0.000 claims abstract description 27
- 238000004088 simulation Methods 0.000 claims abstract description 16
- 230000006698 induction Effects 0.000 claims description 26
- 239000002245 particle Substances 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 20
- 239000003245 coal Substances 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 11
- 238000010926 purge Methods 0.000 claims description 6
- 238000012795 verification Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 3
- 239000003595 mist Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000010998 test method Methods 0.000 claims description 2
- 238000005070 sampling Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 12
- 239000002817 coal dust Substances 0.000 abstract description 10
- 238000011160 research Methods 0.000 abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000010248 power generation Methods 0.000 abstract description 3
- 238000009776 industrial production Methods 0.000 abstract description 2
- 239000012071 phase Substances 0.000 description 13
- 238000002485 combustion reaction Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 239000007790 solid phase Substances 0.000 description 3
- 230000005514 two-phase flow Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- 101100409194 Rattus norvegicus Ppargc1b gene Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000002801 charged material Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 231100000037 inhalation toxicity test Toxicity 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011020 pilot scale process Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000008247 solid mixture Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/60—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrostatic variables, e.g. electrographic flaw testing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention belongs to power plant boiler technical fields, are related to a kind of Dual-Phrase Distribution of Gas olid simulation test device, concretely relate to the Dual-Phrase Distribution of Gas olid simulation test device that Parameter Measuring system check is flowed for a kind of electrostatic method coal dust in industrial production.Including tube electric heater, spraying humidifier, vacuum pump, screw feeder system, experiment pipeline, bag filter, high-speed camera observation device, PLC control system.And the Dual-Phrase Distribution of Gas olid relative concentration method of calibration based on Dual-Phrase Distribution of Gas olid experimental rig.A series of Practical Project coal dust detection cases such as simulation the powder system of coal-fired power generation field may be implemented, carry out electrostatic detection different temperatures, the Dual-Phrase Distribution of Gas olid speed of different water capacities and relative concentration detection research.
Description
Technical field
The invention belongs to power plant boiler technical fields, are related to a kind of Dual-Phrase Distribution of Gas olid simulation test device, specifically
It is the gas-particle two-phase flow field simulation for being related to flowing Parameter Measuring system check for a kind of electrostatic method coal dust in industrial production
Experimental rig.
Background technology
Stability, economy and the First air of coal-fired power plant's boiler combustion enter burner hearth wind speed and coal powder density it is big
Small and uniformity is in close relations, and the wind powder uniformity of the height of coal powder density and each coal burner directly influences in stove
The stabilization of combustion conditions and the efficiency of combustion of boiler.
That there are installation rate is not high for flying marking and wind, the powder on-line checking of domestic power plant, Stability and veracity is poor asks
Topic lacks the accurate measurement means of the parameters such as wind, powder, coal, the ash of reflection boiler combustion status, these all directly affect optimization combustion
Burn the accuracy of modeling and optimum results.
Using between the coal dust and coal dust flowed in pipeline friction and coal dust and pipeline between rub the charge of generation,
It is one of highly effective measurement method to carry out coal dust flow velocity and the detection of coal powder density in pipeline.In the world utilize electrostatic method into
There are Britain, the U.S., Germany and South Africa etc. in the country that row pulverized coal flow measures.The YanY of Britain measures pulverized coal flow using electrostatic method
Speed succeeds, and electrostatic transducer is inserted into coal dust input channel measurement coal powder density and achieves pilot-scale experiment by Millen, and ABB is public
A kind of plug-in type electrostatic cutting load testing instrument that department develops jointly with Teesside universities, the insertion power transportation pipe that it is used
One section of short tube and one section of reel, coal powder density can be measured by realizing, and can measure coal dust speed.
However humidity, the temperature in Dual-Phrase Distribution of Gas olid are found in the research process to electrostatic detection wind powder flow rate and concentration
Have bigger influence to electrostatic detection, in order to deeper into research electrostatic induction sensor to gas-solid rolling particles speed, dense
The measurement of degree, the electrostatic signal that research sensor obtains avoid easily being influenced by factors such as humidity, temperature and coals quality, enhancing sensing
The adaptability of device.
In existing a plurality of types of Measurement research devices, it is merely able to simulation ambient temperature and moisture environment substantially
Under Dual-Phrase Distribution of Gas olid speed verification, verification for Dual-Phrase Distribution of Gas olid relative mass flow (relative concentration) and different gas
At solid mixture temperature and moisture condition, the influence to electrostatic induction is more helpless.
Invention content
For deficiency existing for domestic and international gas-particle two-phase flow field simulation/test device, the purpose of the present invention is to provide one kind
Dual-Phrase Distribution of Gas olid simulator, suitable for alternating temperature, get wet under the conditions of Dual-Phrase Distribution of Gas olid take the research of electric energy power and flow behavior
With analysis, and the testing research for the gas-particle two-phase flow detection device to electrostatic principle.The invention also discloses a kind of use
Dual-Phrase Distribution of Gas olid relative concentration method of calibration is tested in electrostatic principle, using the standard deviation and nothing of collected electrostatic induction signal
The difference of collected electrostatic induction signal standards difference is compared under powder supply state.
The application specifically uses following technical scheme：
A kind of Dual-Phrase Distribution of Gas olid simulation test device, it is characterised in that：The Dual-Phrase Distribution of Gas olid simulation test device simulation
The powder system of coal-fired power generation field carries out electrostatic detection different temperatures, the Dual-Phrase Distribution of Gas olid speed and phase of different water capacities
To concentration.
A kind of Dual-Phrase Distribution of Gas olid simulating test device, the simulating test device include tube electric heater 1, spraying humidification
Device 2, vacuum pump 3, screw feeder system 4, experiment pipeline 5, bag filter 6, high-speed camera observation device 7, PLC controls system
System 8, multiple electrodes sensor；It is characterized in that：
One end of experiment pipeline 5 is connected with air inlet pipeline, and tube electric heater 1 and spraying are respectively arranged on air inlet pipeline
Humidifier 2；
The experiment pipeline 5 being connected with air inlet pipeline, the spiral shell are connected to by pipeline below the feed bin of screw feeder system 4
Feeding system 4 is revolved by flanged joint bag filter 6 suitable for reading, and the top of bag filter 6 is connected with vacuum pump 3, material
Grain enters experiment pipeline 5 through screw feeder system 4 and is mixed to form Dual-Phrase Distribution of Gas olid with the air sucked by air inlet pipeline；
The experiment pipeline 5 includes horizontal tube section and VERTICAL TUBE section, and Dual-Phrase Distribution of Gas olid is in the water by experiment pipeline
Solid falls into the material of screw feeder system 4 after the separation of bag filter 6 after flat line segments 5-1,5-2 and VERTICAL TUBE section 5-3
Storehouse is recycled, and the gas after separation is drained by vacuum pump 3 by air duct；
Multi-group electrode sensor is installed respectively on horizontal tube section 5-1,5-2 and VERTICAL TUBE section 5-3 of experiment pipeline 5
It is poor with the electrostatic induction signal standards for testing Dual-Phrase Distribution of Gas olid, and then calculate the relative concentration of Dual-Phrase Distribution of Gas olid；
It is also respectively provided with observation panel, the high-speed camera on the horizontal tube section of experiment pipeline 5 and VERTICAL TUBE section
Observe the running orbit for the material solids particle that device 7 is shot by observation panel in experiment pipeline 5；
The PLC control system 8 is filled with screw feeder system 4, vacuum pump 3, tube electric heater 1, spraying humidification respectively
Set 2 and high-speed camera observation device 7 be connected, feeding coal, delivery rate for controlling screw feeder system 4, control vacuum
The electric machine frequency of pump 3 and then control to air quantity, control tube electric heater 1 and spraying humidifier 2 with set test temperature and
Humidity acquires the shooting image to observation panel.
The present invention further preferably uses following technical scheme：
The experiment pipeline 5 is additionally provided with experiment pipeline ball valve, is used to open or closes experiment pipeline 5.
The hydraulic test section of the experiment pipeline 5 is two hydraulic test pipeline 5-1,5-2 arranged side by side, and vertical test section is 1
Vertical experiment pipeline 5-3 is connected by bend pipe with vertical experiment pipeline after two sections of hydraulic test pipeline parallel connections；Two sections of hydraulic tests
Pipeline and experiment pipeline pepeline characteristic having the same, are respectively adopted three-way valve and are attached with the main line for testing pipeline 5.
1 pressure-measuring-point is respectively set on two hydraulic test pipelines of experiment pipeline 5 and vertical developmental tube road and passes through pressure
Power transmitter measures the pressure of Dual-Phrase Distribution of Gas olid；Temperature point and humidity measuring point are also set up on vertical developmental tube road, is led to respectively
Excess temperature transmitter and hygrometer measure the temperature and humidity value in experiment pipeline.
The hydraulic test pipeline and the observation panel of vertical developmental tube road are the transparent window using quartz glass, by stone
English glass is connected to stay bolt in the opening of corresponding experiment pipeline by flange.
The Dual-Phrase Distribution of Gas olid simulation test device is additionally provided with bypass conduit, and the bypass short circuit is other to be connected on experiment pipeline
The both ends of 5 hydraulic test section and vertical test section, the bypass conduit are provided with bypass conduit ball valve, for opening and closing
Bypass conduit.
In carrying out Dual-Phrase Distribution of Gas olid simulation test procedure, experiment pipeline ball valve is opened, bypass conduit ball valve is closed；In gas
Before and after fixed double phase flow simulation test, material inlet valve can be closed, opens tube electric heater 1, closes experiment ball valve, is opened other
Road pipeline ball valve purges experimental rig using hot wind.
Vortex-shedding meter is housed on admission line, is used for Test Cycle air quantity.
The air temperature control for entering air inlet pipeline is reached as high as 90 DEG C by tube electric heater 1.
Spraying humidifier is changed by adjusting its intensity into the spray amount for testing pipeline, and spraying humidifier has
High, medium and low, low four adjustings shelves.
In order to simulate coal-burning power plant's the powder system as far as possible, experiment working medium selects quartz sand, material particles size Control to exist
Within the scope of 5um-0.5cm.
Multiple sensing electrode sensors in the Dual-Phrase Distribution of Gas olid simulation test device include being horizontally mounted and pacifying vertically
Fill two different installation sites and conventional electrode sensor and the electrode sensor after insulation processing.
The application further simultaneously discloses a kind of Dual-Phrase Distribution of Gas olid relative concentration verification based on Dual-Phrase Distribution of Gas olid experimental rig
Method, which is characterized in that the method for calibration includes the following steps：
Step 1：In the case that tube electric heater, spraying humidifier do not start, scheduled gas supply flow Q is kept0, gas
Fixed double phase flow simulating test device is not when having powder supply, with the sample frequency of setting, is being tried respectively with setting number capture setting
The electrostatic induction voltage signal of the electrode sensor in two hydraulic test pipelines arranged side by side of pipeline 5 is tested, respectively to quiet at above-mentioned two
Electric induction voltage signal seeks standard deviation, obtains the standard deviation U of the electrode sensor under no powder supply state01,U02；
Step 2：In the case where tube electric heater, spraying humidifier do not start, keep described scheduled for air-flow
Measure Q0, start screw feeder motor and carry out continuous powder supply, with the identical sample frequency with step 1, respectively with identical as step 1
Setting number capture setting experiment pipeline 5 two hydraulic test pipelines arranged side by side in electrode sensor electrostatic induction voltage
Signal asks standard deviation to get to the mark of the electrode sensor under powder supply state electrostatic induction voltage signal at above-mentioned two respectively
Quasi- difference Us1,Us2；
Step 3：Two hydraulic tests arranged side by side for getting rid of the experiment pipeline 5 that material measures after influence factor are calculated according to the following formula
The standard deviation of the electrostatic induction signal of electrode sensor in pipeline, i.e.,
The gas-particle two-phase current mass relative concentration that electrode sensor at two measures is calculated according to the following formula, i.e.,：
Wherein：Perc1For the gas-particle two-phase liquid in the wherein hydraulic test pipeline in two hydraulic test pipelines arranged side by side
Measure relative concentration；
Perc2It is relatively dense for the gas-particle two-phase current mass in another hydraulic test pipeline in two hydraulic test pipelines arranged side by side
Degree；
Step 4：By above-mentioned Perc1With Perc2Result of calculation is compared with 50% mass relative concentration, is checked
Deviation △ Perc1, △ Perc2；
Step 5：In tube electric heater respectively under the first preset temperature, the second preset temperature, steps 1 and 2,3,4 are repeated
It is tested, wherein the second preset temperature is higher than the first preset temperature；
Step 6：Under conditions of keeping step 5 by tube electric heater in different preset temperatures, starts spraying and add
Wet device is respectively with from down to high a variety of different mist flows, repetition steps 1 and 2,3,4,5 are tested；
Step 7：Deviation is checked to the gas-particle two-phase current mass relative concentration values that above step 5,6 obtains to be compared,
Show that temperature, humidity check Dual-Phrase Distribution of Gas olid relative concentration the influence relationship of deviation by tracing analysis.
The present invention compared with the existing technology, has the advantages that：
The present invention can simulate a series of Practical Project coal dust detections such as the powder system of coal-fired power generation field and distribution
Case carries out installation site research, Dual-Phrase Distribution of Gas olid speed and the relative concentration detection check research of electrostatic detection.In addition, this
Inventive structure is simple, easy to spread.
1, influence of more sensing electrode installation directions to electrostatic capacity sensor is tested, that is, is horizontally mounted and vertically-mounted position
Difference, and then analyze influence to velocity measuring；
2, the variation of test Dual-Phrase Distribution of Gas olid mixture temperature carries out Dual-Phrase Distribution of Gas olid to electrode sensor and takes electric induction ability
Influence；
3, the variation of test Dual-Phrase Distribution of Gas olid mixture humidity carries out Dual-Phrase Distribution of Gas olid to electrode sensor and takes electric induction ability
Influence；
4, the influence that different sensing electrode forms take Dual-Phrase Distribution of Gas olid electric induction ability is tested.
Description of the drawings
Fig. 1 is the application Dual-Phrase Distribution of Gas olid experimental rig structure diagram；
Fig. 2 is relative concentration method of calibration flow chart.
Specific implementation mode
Below according to Figure of description, technical scheme of the present invention is further described in conjunction with preferred embodiment.
As shown in Figure 1, the present invention includes tube electric heater 1, spraying humidifier 2, vacuum pump 3, screw feeder system
4, experiment pipeline 5-1,5-2,5-3, bag filter 6, high-speed camera observation device 7, PLC control system 8, electrode sensor.
Dual-Phrase Distribution of Gas olid experimental rig is made of air inlet pipeline, experiment pipeline, purging bypass conduit.Entire experimental rig contains
There are 3 sections of experiment pipelines, wherein comprising one section of vertical experiment pipeline and two sections of hydraulic test pipelines, to meet to vertically-mounted and water
Safety holding position treats the influence of test block measurement result；Horizontal pipe section, vertical pipe section are connected by multigroup bend pipe, wherein bend pipe
Radius is 300mm.For the verification for Dual-Phrase Distribution of Gas olid relative concentration, two sections of hydraulic test pipelines have phase with experiment pipeline
Same pepeline characteristic is respectively adopted three-way valve and is attached with experiment pipeline, Q102 × 11mm is all made of not with upper pipeline
Become rusty steel pipe.
Hydraulic test pipeline section and vertical test section are provided with observation pipeline section, viewing section uses the quartzy glass of 300mm long
Glass is connected to developmental tube road by flange and stay bolt, the flowing of gas-solid phase in pipeline is both observed for experimenter
State also is available for the transparent window used in high-speed camera observation device 7.High-speed camera observes device 7 and experimental observation section optical axis
It is highly consistent, and the center of optical axis and viewing section intersects vertically, high-speed camera observation device is connected to PLC controls by data line
In device 8, the running orbit of solid particle can be taken using high-speed camera observation device 7.
When experiment, tube electric heater has startup and does not start two states, empty under tube electric heater starting state
Gas enters test section under the extraction of vacuum pump 3, by preheating.The power for adjusting tube electric heater can make to enter experiment
The air themperature highest of pipeline section is preheating to 90 DEG C.Tube electric heater is exported to be surrounded by 25mm on the pipeline of gas-solid mixing point after
Insulating layer, to reduce thermal loss.The volume flow of air is measured with vortex-shedding meter, and the flow of air can be by PLC controller 8
Middle 3 electric machine frequency of setting vacuum pump is controlled, and gas flow can be controlled in 70m3/ h~700m3The range changing of/h.
In order to simulate influence of the Dual-Phrase Distribution of Gas olid water capacity to electrostatic sensing electrode electrostatic capacity sensor, on gas path pipe
Spraying humidifier 2 is installed, to change the humidity in Dual-Phrase Distribution of Gas olid, the exhaust outlet of spraying humidifier 2 passes through band tubing
Connecting welding is designed on the T-type pedestal on gas circuit pipe road by venturi-type eductors, and pipeline negative pressure is increased, to increase spraying.
It is quantitative to take electrical characteristics for study wet granular under different water capacities by changing the humidity environment of Dual-Phrase Distribution of Gas olid flowing
Analyze the critical point humidity of passive electrostatic induction detection.Spraying humidifier is respectively high, medium and low, low fourth gear, by manual
Different gears is adjusted to change no humidification amount.
Screw feeder system 4 claims comprising hopper, feeding motor, feeding screw rod, spiral, constitutes an at the uniform velocity feed system
System.Feeding motor uses variable-frequency motor, to meet the control of different feeding coals.Mouth tack flanged joint screw feeder under hopper
Machine, flanged joint bag filter suitable for reading.Feeding screw rod claims, using being flexible coupling, to weigh to hopper to realize with spiral.Hello
Expect that motor uses variable-frequency motor, to meet the control of different feeding coals.
Material particles are continuously released out of below feed bin let-down to screw(-type) feeder, and by system after helix balance is weighed
Negative pressure inhalation test pipeline, be mixed into gas-solid phase with air.The inlet amount of material particles can pass through in unit interval
The rotating speed for changing feed motor is controlled.
Bag filter one be avoid dust to after deduster electric control valve generate harmful effect, second is that prevent dust into
Enter air, pollutes.House outlet connects gas exhaust piping.Hydraulic test section and vertical pipeline are passed through in Dual-Phrase Distribution of Gas olid respectively
Solid can fall into feed bin and be recycled after the separation of Duan Houjing bag filters, and the gas after separation is drained by air duct, minimum
Dedusting grain size is 0.1 μm.Material after humidifying in order to prevent sticks together after bag filter detaches inside deduster,
It is provided with purging bypass in experimental rig, when being used for unavailability material, using hot air blowing deduster, ensures dedusting
Effect.
The operation of the gas-solid phase experimental rig remaining all operation in addition to vacuum pump is to manually start, including stream
Amount range the presetting of (air mass flow, the inlet amount of material), the setting of pendulous frequency, data acquisition under each flow regime
With processing etc., being all that PLC controller control is lower automatic carries out.In each measure, between the electrostatic signal of sensor output mutually
The calculating for closing function is completed under the instruction control of PLC by cross-correlated signal analyzer.
It is provided with 3 pressure-measuring-points on developmental tube road, is located at unit length level, vertical test section.Perpendicular
Straight test section setting temperature point and humidity measuring point.Vortex-shedding meter is housed simultaneously on gas path pipe, for calculating operating mode
Air quantity.
Described multiple electrodes sensor 9-1,9-2,9-3,9-4,9-5, the 9-6 is fixed on experiment by flange and stay bolt
On pipeline.Electrode sensor is divided into conventional electrode sensor and the electrode sensor after insulation processing, directly right to be used for
Than the influence to measuring signal after change Dual-Phrase Distribution of Gas olid humidity.
Specifically the arrangement of electrode sensor is：A pair of of conventional electrode sensor 9-1,9-3 are separately mounted to level
The position on the upper right side test section 5-1,5-2；A pair of electrode sensor 9-2,9-4 Jing Guo insulation processing is separately mounted to level
The position of test section 5-1,5-2 upper left side；By a conventional electrode sensor 9-5 and an electrode sensing Jing Guo insulation processing
Device 9-6 is separately mounted to vertical test section；Electrode sensor is fixed on examination by the flanged joint of stay bolt and developmental tube road
It tests on pipeline, is respectively adopted and is connect with PLC by communication line.
Experiment process is：Dual-Phrase Distribution of Gas olid experimental rig is installed, bypass ball valve is closed, is charged material by feeding port
Into experimental rig, experiment pipeline ball valve is opened, starts vacuum pump, so that gas is in higher speed motion state, work as steady air current
Afterwards, screw feeder motor is opened, it is made steadily to be operated under a certain rotating speed, when flowing wind flow signal and pressure signal are steady
After fixed, synchronous recording flows the signals such as wind wind pressure, flow, various differential pressures and electrode sensor.
Change entire gas flow rate by changing the frequency of vacuum pump, the experimental rig disclosure satisfy that gas flow rate exists
The flowing velocity of 20~35m/s changes the density of Dual-Phrase Distribution of Gas olid, the experiment dress by changing the frequency of screw(-type) feeder
It sets and disclosure satisfy that solid and gas volumetric concentration changes between 0.05~0.5%, to complete all operating condition of test.
When carrying out alternating temperature working condition tests, start tube electric heater, control Dual-Phrase Distribution of Gas olid temperature highest is adjustable to 90 DEG C；
If carry out the Dual-Phrase Distribution of Gas olid experiment under different humidity atmosphere, only it need to start the spraying humidifier 2.It is noticeable
Be, in order to prevent since humidity of materials is excessive, after causing bag filter that a little material adhesion occurs, can by close material into
Mouth valve, opens tube electric heater, closes experiment ball valve, and opening bypasses purging ball valve and hot wind is utilized to carry out experimental rig purging.
The application further simultaneously discloses a kind of Dual-Phrase Distribution of Gas olid relative concentration verification based on Dual-Phrase Distribution of Gas olid experimental rig
Method as a pair of electrodes sensor or utilizes 9- when relative concentration verifies using 9-1,9-3 mounted on hydraulic test pipeline
2,9-4 is tested as a pair of electrodes sensor, which is characterized in that the method for calibration includes the following steps：
Step 1：In the case that tube electric heater, spraying humidifier do not start, scheduled gas supply flow Q is kept0, examination
When experiment device does not have powder supply, with>The sample frequency of the sample frequency (e.g., 15kHz, 20kHz, 25kHz) of 10kHz, acquires respectively
To the electrostatic induction voltage signal of 5000 9-1,9-3 electrode sensors, standard deviation is asked to the voltage signal of 9-1,9-3 respectively,
Obtain the standard deviation U of the electrode sensor under no powder supply state01,U02.The computational methods of standard deviation are as follows：
Wherein, U01For under no powder supply state, the collected electrostatic induction voltage signal standards of electrode sensor 9-1 is poor；
U02For under no powder supply state, the collected electrostatic induction voltage signal standards of electrode sensor 9-3 is poor；
x01iThe array for being 5000 for length,For the x acquired01iThe average value of array；
x02iThe array for being 5000 for length,For the x acquired02iThe average value of array.
Step 2：In the case that tube electric heater, spraying humidifier do not start, scheduled gas supply flow Q is kept0, open
Dynamic screw feeder motor carries out continuous powder supply and collects 5000 9-1,9-3 electrode sensings respectively with the sample frequency of step 1
The electrostatic induction voltage signal of device, seeks standard deviation to the voltage signal of 9-1,9-3 respectively, and the electrode under powder supply state is calculated
The standard deviation of sensor is Us1,Us2。
Wherein, Us1For under powder supply state, the collected electrostatic induction voltage signal standards of electrode sensor 9-1 is poor；
Us2For under powder supply state, the collected electrostatic induction voltage signal standards of electrode sensor 9-3 is poor；
xs1iThe array for being 5000 for length,For the x acquireds1iThe average value of array；
xs2iThe array for being 5000 for length,For the x acquireds2iThe average value of array.
Step 3：Material etc. of getting rid of that 9-1,9-3 electrode sensor is calculated measures the electrostatic induction after influence factor
The standard deviation of signal, i.e.,
Gas-particle two-phase current mass relative concentration is calculated, i.e.,：
Wherein：Perc1The gas-particle two-phase current mass in experiment pipeline 5-1 measured for electrode sensor 9-1 is relatively dense
Degree；
Perc2The gas-particle two-phase current mass relative distribution in experiment pipeline 5-1 measured for electrode sensor 9-3 is dense
Degree.
Step 4：Because hydraulic test section 5-1,5-2 structure having the same, material, relative position arrangement etc. characteristics, i.e., this
Two sections of test section pepeline characteristics having the same, completely two sections of pipelines in parallel, the Dual-Phrase Distribution of Gas olid mass flow being assigned to are
Consistent, therefore, the quality relative concentration corresponding to each pipeline is 50%, by above-mentioned Perc1With Perc2Result of calculation
It is compared with 50%, obtains checking deviation △ Perc1, △ Perc2。
Step 5：In tube electric heater in the first preset temperature T1With the second preset temperature T2Under, repeat steps 1 and 2,3,4
It is tested.
Wherein, the first preset temperature T1Less than the second preset temperature T2。
First preset temperature range T1Value range is 30~60 DEG C, the second preset temperature T2Value range be 65~90
℃。
In multiple embodiments of the application, T1 may be configured as 35 DEG C, 45 DEG C, 50 DEG C or 55 DEG C, T2 may be configured as 70 DEG C,
75 DEG C, 80 DEG C or 85 DEG C etc..
Step 6：Under the temperature condition for keeping step 5 to be set separately by tube electric heater, start spraying humidification dress
It sets so that from down to high a variety of different mist flows, repetition steps 1 and 2,3,4 are tested；In the embodiment of the present application, it sprays
Flow M is respectively set to 9g/s, 18g/s, 27g/s.
Step 7：Deviation △ Perc are checked to the gas-particle two-phase current mass relative concentration values of above step 5,61, △ Perc2
It is compared, checks the influence relationship of deviation to Dual-Phrase Distribution of Gas olid relative concentration by tracing analysis temperature, humidity.
ΔT, M=f (T, M)
Wherein, ΔT, MTemperature, humidity check deviation influence factor to gas-particle two-phase current mass relative concentration values.Applicant
The embodiment of the present invention is described in detail and is described in conjunction with Figure of description, but those skilled in the art should manage
Solution, above example is only the preferred embodiments of the invention, and explanation is intended merely to that reader is helped to more fully understand this in detail
Spirit, and it is not intended to limit the protection scope of the present invention, on the contrary, any made by any spirit based on the present invention
It improves or modification should all be fallen within the scope and spirit of the invention.
Claims (11)
1. a kind of Dual-Phrase Distribution of Gas olid simulating test device, the simulating test device includes tube electric heater (1), spraying humidification
Device (2), vacuum pump (3), screw feeder system (4), experiment pipeline (5), bag filter (6), high-speed camera observe device
(7), PLC control system (8), multiple electrodes sensor；It is characterized in that：
One end of experiment pipeline (5) is connected with air inlet pipeline, and tube electric heater (1) and spraying are respectively arranged on air inlet pipeline
Humidifier (2)；
The experiment pipeline (5) being connected with air inlet pipeline, the spiral shell are connected to by pipeline below the feed bin of screw feeder system (4)
Rotation feeding system (4) passes through flanged joint bag filter (6) suitable for reading, top and vacuum pump (3) phase of bag filter (6)
Even, the air that material particles enter experiment pipeline (5) through screw feeder system (4) and sucked by air inlet pipeline is mixed to form gas
Fixed double phase flow；
The experiment pipeline (5) includes horizontal tube section and VERTICAL TUBE section, and Dual-Phrase Distribution of Gas olid is in the level by experiment pipeline
Solid falls into screw feeder system after line segments (5-1,5-2) and VERTICAL TUBE section (5-3) are detached by bag filter (6)
(4) feed bin is recycled, and the gas after separation is drained by vacuum pump (3) by air duct；
Multi-group electrode sensing is installed respectively on the horizontal tube section (5-1,5-2) of experiment pipeline (5) and VERTICAL TUBE section (5-3)
Device is poor with the electrostatic induction signal standards for testing Dual-Phrase Distribution of Gas olid, and then calculates the relative concentration of Dual-Phrase Distribution of Gas olid；
Observation panel is also respectively provided on the horizontal tube section of experiment pipeline (5) and VERTICAL TUBE section, the high-speed camera is seen
Examine the running orbit for the material solids particle that device (7) is shot by observation panel in experiment pipeline (5)；
The PLC control system (8) adds with screw feeder system (4), vacuum pump (3), tube electric heater (1), spraying respectively
Wet device (2) and high-speed camera observation device (7) are connected, feeding coal, feed speed for controlling screw feeder system (4)
The electric machine frequency of rate, control vacuum pump (3) is controlled in turn to air quantity, control tube electric heater (1) and spraying humidifier (2)
To set test temperature and humidity, the shooting image to observation panel is acquired.
2. Dual-Phrase Distribution of Gas olid simulating test device according to claim 1, it is characterised in that：
The experiment pipeline (5) is additionally provided with experiment pipeline ball valve, is used to open or closes experiment pipeline (5).
3. Dual-Phrase Distribution of Gas olid simulating test device according to claim 1 or 2, it is characterised in that：
The horizontal tube section of the experiment pipeline (5) is two hydraulic test pipelines (5-1,5-2) arranged side by side, two sections of hydraulic test pipes
It is connected with VERTICAL TUBE section by bend pipe after the parallel connection of road；Two sections of hydraulic test pipeline pepeline characteristics having the same, are respectively adopted
The main line of three-way valve and experiment pipeline (5) is attached.
4. Dual-Phrase Distribution of Gas olid simulating test device according to claim 3, it is characterised in that：
1 pressure-measuring-point is respectively set on the hydraulic test pipeline of experiment pipeline (5) and VERTICAL TUBE section and passes through pressure inverting
Device measures the pressure of Dual-Phrase Distribution of Gas olid；Temperature point and humidity measuring point are also set up on VERTICAL TUBE section, are become respectively by temperature
Device and hygrometer is sent to measure the temperature and humidity value in experiment pipeline.
5. Dual-Phrase Distribution of Gas olid simulating test device according to claim 1 or 2, it is characterised in that：
Observation panel on the horizontal tube section and VERTICAL TUBE section is the transparent window using quartz glass, and quartz glass is led to
Flange is crossed to be connected to stay bolt in the opening of corresponding experiment pipeline.
6. Dual-Phrase Distribution of Gas olid simulating test device according to claim 2, it is characterised in that：
The Dual-Phrase Distribution of Gas olid simulating test device is additionally provided with bypass conduit, and experiment pipeline (5) is connected on by the bypass conduit
Horizontal tube section and VERTICAL TUBE section both ends, the bypass conduit is provided with bypass conduit ball valve, for opening and closing
Bypass conduit.
7. Dual-Phrase Distribution of Gas olid simulating test device according to claim 6, it is characterised in that：
In carrying out Dual-Phrase Distribution of Gas olid simulation test procedure, experiment pipeline ball valve is opened, bypass conduit ball valve is closed；In gas-solid two
Before and after the experiment of phase flow field simulation, material inlet valve is closed, opens tube electric heater (1), experiment pipeline ball valve is closed, opens bypass
Pipeline ball valve purges test device using hot wind.
8. Dual-Phrase Distribution of Gas olid simulating test device according to claim 1 or 4, it is characterised in that：
Vortex-shedding meter is housed on air inlet pipeline, is used for Test Cycle air quantity；
Control is entered into the air themperature of experiment pipeline up to 90 DEG C by tube electric heater (1)；
Spraying humidifier is changed by adjusting its intensity into the spray amount for testing pipeline, and spraying humidifier has from up to
Four low adjusting shelves.
9. a kind of gas-solid two based on the Dual-Phrase Distribution of Gas olid simulating test device described in any one of claim 1-8 claims
Mutually stream relative concentration method of calibration, which is characterized in that the method for calibration includes the following steps：
In the case that tube electric heater, spraying humidifier do not start：
Step 1：Keep scheduled gas supply flow Q0, Dual-Phrase Distribution of Gas olid simulating test device is not when having powder supply, with the sampling of setting
Frequency, respectively to set the electrostatic of electrode sensor of the number capture setting in two hydraulic test pipelines arranged side by side of experiment pipeline
Induced voltage signal seeks standard deviation to electrostatic induction voltage signal at above-mentioned two respectively, and the electrode obtained under no powder supply state passes
The standard deviation U of sensor01,U02；
Step 2：Keep the scheduled gas supply flow Q0, start screw feeder motor and carry out continuous powder supply, with phase in step 1
Same sample frequency, respectively with setting number capture setting identical with step 1 in the two hydraulic test pipes arranged side by side for testing pipeline
The electrostatic induction voltage signal of electrode sensor in road seeks standard deviation, i.e., to electrostatic induction voltage signal at above-mentioned two respectively
Obtain the standard deviation U of the electrode sensor under powder supply states1,Us2；
Step 3：The two hydraulic test pipelines arranged side by side for getting rid of the experiment pipeline that material measures after influence factor are calculated according to the following formula
In electrode sensor electrostatic induction signal standard deviation, i.e.,
The gas-particle two-phase current mass relative concentration that electrode sensor at two measures is calculated according to the following formula, i.e.,：
Wherein：Perc1It is opposite for the gas-particle two-phase current mass in the wherein hydraulic test pipeline in two hydraulic test pipelines arranged side by side
Concentration；
Perc2For the gas-particle two-phase current mass relative concentration in another hydraulic test pipeline in two hydraulic test pipelines arranged side by side；
Step 4：By above-mentioned Perc1With Perc2Result of calculation is compared with 50% mass relative concentration, obtains checking deviation
Value △ Perc1, △ Perc2；
Step 5：In tube electric heater respectively under the first preset temperature, the second preset temperature, repeats steps 1 and 2,3,4 carries out
Experiment, wherein the second preset temperature is higher than the first preset temperature；
Step 6：Under conditions of keeping step 5 by tube electric heater in different preset temperatures, start spraying humidification dress
It sets respectively so that from down to high a variety of different mist flows, repetition steps 1 and 2,3,4 are tested；
Step 7：Deviation is checked to the gas-particle two-phase current mass relative concentration values that above step 5,6 obtains to be compared, and is passed through
Tracing analysis show that temperature, humidity check Dual-Phrase Distribution of Gas olid relative concentration the influence relationship of deviation.
10. the Dual-Phrase Distribution of Gas olid relative concentration method of calibration of Dual-Phrase Distribution of Gas olid simulating test device according to claim 9,
It is characterized in that：
In steps of 5, first preset temperature is arranged ranging from 30~60 DEG C, the second preset temperature setting ranging from 65~90
℃。
11. the Dual-Phrase Distribution of Gas olid relative concentration verification side of Dual-Phrase Distribution of Gas olid simulating test device according to claim 10
Method, it is characterised in that：
First preset temperature is 50 DEG C, and the second preset temperature is 80 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610530878.5A CN106197517B (en) | 2016-07-07 | 2016-07-07 | A kind of Dual-Phrase Distribution of Gas olid simulating test device and relative concentration method of calibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610530878.5A CN106197517B (en) | 2016-07-07 | 2016-07-07 | A kind of Dual-Phrase Distribution of Gas olid simulating test device and relative concentration method of calibration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106197517A CN106197517A (en) | 2016-12-07 |
| CN106197517B true CN106197517B (en) | 2018-08-10 |
Family
ID=57472984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610530878.5A Active CN106197517B (en) | 2016-07-07 | 2016-07-07 | A kind of Dual-Phrase Distribution of Gas olid simulating test device and relative concentration method of calibration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106197517B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771047B (en) * | 2016-12-16 | 2023-08-29 | 华北电力大学 | Multi-sensor-based pulverized coal water content and coal type monitoring device and method |
| CN106680045B (en) * | 2016-12-29 | 2023-05-26 | 上海烟草集团有限责任公司 | Tobacco sample smoke release system and tobacco sample smoke aerosol collection method |
| CN107435097B (en) * | 2017-08-08 | 2018-12-14 | 江苏大学 | A kind of the multiple physical field simulation experiment system and method for pelletizing drying and preheating process |
| CN108816525B (en) * | 2018-09-12 | 2023-08-18 | 齐鲁工业大学 | Soft measuring device and method for concentration of stirring tank of copper ore flotation machine |
| CN110389091B (en) * | 2019-08-19 | 2021-01-29 | 中国矿业大学 | Gas-solid two-phase flow state parameter detection device based on luminosity change and application thereof |
| CN112556967B (en) * | 2020-12-30 | 2022-08-23 | 太原理工大学 | Gas-solid two-phase migration simulation test device for pipe network with complex structure |
| CN113091796B (en) * | 2021-04-06 | 2022-07-15 | 上海应用技术大学 | Sensor thermal response performance detection device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2771174B1 (en) * | 1997-11-17 | 2000-01-14 | Cgia | METHOD, DEVICE AND INSTALLATION FOR THE ANALYSIS OF A GASEOUS EFFLUENT WITH DETERMINATION OF A DUST RATE |
| RU2403393C2 (en) * | 2008-09-25 | 2010-11-10 | РОССИЙСКАЯ ФЕДЕРАЦИЯ, от имени которой выступает ФЕДЕРАЛЬНОЕ АГЕНТСТВО ПО ЭНЕРГЕТИКЕ | Testing device of instruments and elements of systems of air-and-gas and dust control of well atmosphere |
| CN101430269B (en) * | 2008-12-17 | 2011-02-09 | 华北电力大学 | Real-time detection apparatus for coal powder concentration and phase distribution in pneumatic conveying pipe |
| CN101520365B (en) * | 2009-03-06 | 2011-05-04 | 山东科技大学 | Simulation experimental system for controlling mine tunnel dust environment |
| CN101706358B (en) * | 2009-11-16 | 2011-06-15 | 中国人民解放军空军装备研究院雷达与电子对抗研究所 | Test device system of sand/dust environment |
| CN104296958A (en) * | 2014-09-12 | 2015-01-21 | 山东科技大学 | Coal mine underground PM2.5 concentration simulation detecting system |
| CN205156965U (en) * | 2015-11-30 | 2016-04-13 | 北京英思创科技有限公司 | Wind powder blending transportation medium concentration, online static measurement system of velocity of flow |
-
2016
- 2016-07-07 CN CN201610530878.5A patent/CN106197517B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106197517A (en) | 2016-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106197517B (en) | A kind of Dual-Phrase Distribution of Gas olid simulating test device and relative concentration method of calibration | |
| CN105067493B (en) | Flue dust concentration on-line measurement system and measuring apparatus and On-line Measuring Method | |
| CN106525520B (en) | Dilution multi-stage sampling device for flue gas mixing channel of fixed combustion source | |
| CN205958413U (en) | Gas -solid two -phase flow simulating measurement setup | |
| CN108840106B (en) | A kind of visualization long range concentrated phase positive pneumatic transport experimental rig | |
| CN108507918B (en) | Device and method for on-line monitoring concentration of ultralow-emission flue gas particles | |
| CN106237739A (en) | A kind of sack cleaner experimental system and experimental technique thereof | |
| CN104729890B (en) | A kind of PM2.5 source resolution sampling apparatuses based on feedback flow control | |
| CN107894342A (en) | A kind of electric precipitator performance experimental system | |
| CN107144509A (en) | A kind of filter core performance measurement method of natural gas filtering separation equipment | |
| CN105181402A (en) | Low-concentration smoke dust sampling device and method | |
| CN104764769A (en) | Multichannel parallel heat release rate test system and test method | |
| CN108982683B (en) | Coal mine ventilation air methane introduced coal-fired boiler co-combustion oxidation analysis device and method | |
| CN107782403A (en) | A kind of apparatus for measuring charge level and material level measuring method | |
| CN106442857A (en) | Detection method and detection device for carbon dioxide emission based on oxygen content determination | |
| CN105021503A (en) | Dust concentration calibrating system and method suitable for photoelectric method dust concentration detector | |
| CN112763388A (en) | Online monitoring system and method for concentration deviation between coal mill powder conveying pipelines | |
| CN107449685A (en) | A kind of integrated β rays dust concentration direct-reading measurement device | |
| CN206038387U (en) | A multiple spot subregion sampling system for monitoring of multi -phase fluid medium composition | |
| CN112798467B (en) | Intelligent online ash detection device and detection method based on high-speed microscopic vision | |
| CN108414299A (en) | A kind of stationary source exhaust gas sampling apparatus and the method for sampling | |
| CN206184136U (en) | Bag collector experimental system | |
| CN206038383U (en) | A net multi -point sampling system for monitoring of multi -phase fluid medium composition | |
| CN202870101U (en) | Sulfur analyzer capable of accurately measuring sulfur contents in combustibles | |
| CN108303280A (en) | A kind of wet method fume desulfurizing system demister performance test experimental system and experimental method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 101303 2nd floor, building 307, Guodian New Energy Institute, 9 Yingcai North 2nd Street, future science and Technology City, Changping District, Beijing Patentee after: Guoneng xinkong Internet Technology Co.,Ltd. Address before: Building 1, yard 16, West Fourth Ring Middle Road, Haidian District, Beijing 100039 Patentee before: BEIJING HUADIAN TIANREN ELECTRIC POWER CONTROL TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address |
Address after: Room 618 and 619, 6th floor, building 301, Guodian New Energy Institute, No. 9, Yingcai North 2nd Street, future science and Technology City, Changping District, Beijing 102209 Patentee after: Guoneng Information Control Technology Co.,Ltd. Country or region after: China Address before: 101303 2nd floor, building 307, Guodian New Energy Institute, 9 Yingcai North 2nd Street, future science and Technology City, Changping District, Beijing Patentee before: Guoneng xinkong Internet Technology Co.,Ltd. Country or region before: China |