CN209589599U - A kind of intellegent sampling device measuring fuel burning different zones intermediate product - Google Patents
A kind of intellegent sampling device measuring fuel burning different zones intermediate product Download PDFInfo
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- CN209589599U CN209589599U CN201821932160.XU CN201821932160U CN209589599U CN 209589599 U CN209589599 U CN 209589599U CN 201821932160 U CN201821932160 U CN 201821932160U CN 209589599 U CN209589599 U CN 209589599U
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- 238000005070 sampling Methods 0.000 title claims abstract description 82
- 239000000446 fuel Substances 0.000 title claims abstract description 28
- 239000003365 glass fiber Substances 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 11
- 239000010703 silicon Substances 0.000 claims abstract description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000002485 combustion reaction Methods 0.000 claims description 20
- 230000003746 surface roughness Effects 0.000 claims description 4
- 238000011030 bottleneck Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims 1
- 239000000295 fuel oil Substances 0.000 abstract description 8
- 239000007787 solid Substances 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 27
- 238000005259 measurement Methods 0.000 description 16
- 239000012071 phase Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 239000002283 diesel fuel Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 210000001331 Nose Anatomy 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 235000005035 ginseng Nutrition 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000003137 locomotive Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 150000003376 silicon Chemical class 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
Abstract
The utility model belongs to IC Engine Test Technology field, is related to a kind of intellegent sampling device for measuring fuel burning different zones intermediate product；Including sampling gas-guide tube, thermocouple, electromagnetic flowmeter, cooling tube, PLC controller, micro-suction pump, solenoid valve B, branch pipe, glass fiber filter, solenoid valve A, silicon pressure drag micro-pressure sensor and sampler bag；The one end for sampling gas-guide tube is thermocouple, and the other end is sampler bag；Thermocouple is sequentially connected electromagnetic flowmeter, cooling tube, micro-suction pump, branch pipe and glass fiber filter by sampling gas-guide tube；PLC controller is successively connected with electromagnetic flowmeter and solenoid valve A；Thermocouple, solenoid valve B and micro-suction pump are connect by electromagnetic flowmeter and solenoid valve A with PLC controller, realize that the gas of fuel oil difference flame region and solid intermediate product are sampled using PLC controller intelligent control sampling time, sampling flow and sampled pressure, it ensure that the precision of sampling, realize intellegent sampling.
Description
Technical field
The utility model patent belongs to IC Engine Test Technology field, and in particular to a kind of measurement fuel burning different zones
The intellegent sampling device of intermediate product.
Background technique
The liquid fuels such as diesel oil are the major impetus sources of China's motor vehicle, are widely used in automobile, agricultural machinery, work
The industries such as journey machinery, ship and railway locomotive are mechanical.Studies have shown that the heavy motor truck based on combustion diesel fuel is PM discharge
One of main source.In general, the process that fuel burning forms particulate matter to solid phase again by liquid phase to gas phase is extremely complex, packet
Include the stages such as fuel oil splitting decomposition, cyclization, gas-solid conversion, particle growth.For the forming process for studying particle, domestic and foreign scholars couple
The approach that the intermediate product and particle of fuel oil difference combustion state are formed carries out in-depth study, wherein being used as combustion intermediate product
Gas phase and solid matter be the key that particle formation, and the purpose of this sampling apparatus is exactly to adopt using intellegent sampling device
Collect the intermediate product of fuel burning different zones, for the further relationship disclosed between combustion product and particle (PM), proposes
The method for reducing diesel engine PM provides condition.
Current existing sampling apparatus principle is mostly to be existed using the opening and closing of mechanically or electrically subsystem control sampling valve
The combustion product after the completion of burning, mostly particulate solid are collected at exhaust valve, even if there is the sampling of some combustion intermediate products
Device, and do not have the advantages that structure is simple, and control is stablized, sampling intelligence facilitates, the utility model samples gaseous state production simultaneously
Object and solid product, so different phase of the utility model according to fuel burning, proposes sampling time, flow, pressure etc.
Control method by application control electric elements and writes software, realizes intelligent sample, and the device and method are for research
The gas and solid intermediate product of fuel burning different zones have great importance.
Summary of the invention
In view of the deficiencies of the prior art, the utility model aims to solve the problem that one of described problem；It is formed due to fuel burning
Flame, which has, significantly to raise up, and can be divided into flame core, internal flame, flame envelope, for rationally acquisition combustion intermediate product, precise measurement displacement
Amount can choose multiple positions as measurement point, and multiple measurement points correspond to the position of more sampling gas-guide tubes and thermocouple；This is practical
It is novel to provide a kind of intellegent sampling device for measuring fuel burning different zones intermediate product, it can voluntarily adjust according to the actual situation
The number of whole measurement point and position.
In order to achieve the goal above, the technical solution of the utility model is as follows:
The utility model provides a kind of intellegent sampling device for measuring fuel burning different zones intermediate product, including multiple
It samples gas-guide tube, thermocouple, sliding support, electromagnetic flowmeter, cooling tube, PLC controller, micro-suction pump, solenoid valve B, divide
Manifold, glass fiber filter, solenoid valve A, silicon pressure drag micro-pressure sensor and sampler bag；
Multiple sampling gas-guide tubes are to be arranged in parallel up and down, and thermocouple is installed in one end of the sampling gas-guide tube, are placed in
Temperature is detected among combustion flame, the other end connects sampler bag；The resistance micro-pressure sensor is set to sampler bag and sampling air guide
The junction of pipe；
The sliding support is vertically connected with sampling gas-guide tube；The thermocouple is sequentially connected electromagnetism by sampling gas-guide tube
Flowmeter, cooling tube, micro-suction pump, branch pipe and glass fiber filter；
One branch pipe is set at the branch pipe, is connected to outside air；Solenoid valve B is provided on the branch pipe；
The solenoid valve A is set between glass fiber filter and sampler bag；
The PLC controller is successively connected with electromagnetic flowmeter and solenoid valve A；
The thermocouple, solenoid valve B and micro-suction pump are connect by electromagnetic flowmeter and solenoid valve A with PLC controller.
The sliding support is no less than 1.
The straight long tube that the diameter of the sampling gas-guide tube is 1.5~2.5mm, high temperature resistant, for conveying sample gas.
The flow velocity of gas in the electromagnetic flowmeter detection sampling gas-guide tube, and according to formula P0=(V2*L)/(C2* R) meter
Pressure P at where calculating0；Wherein V is gas flow rate in pipe, and R is pipe radius, and L is air guide length of tube, and C is coefficient, wherein
Coefficient C=R(1/6)/ n, n are wall surface roughnesses, and value range is 0.011~0.014.
The sampler bag is the material bag of rubber system, and bag internal volume is 0.8~1.2L, and sack is the circle of 6~8mm of diameter
Bottleneck facilitates connection sample gas detecting instrument.
The micro-suction pump flow rates are 0.2~1L/min.
The silicon pressure drag micro-pressure sensor includes power sensing structure, for detecting pressure size in sampler bag；The quick knot of power
Structure is double nose girder membrane structures, and when there is pressure to act on pressure-sensitive diaphragm, pressure-sensitive diaphragm deforms, due to piezoresistive effect,
Resistance value changes, and passes through formulaPressure value p is calculated, p is what diaphragm was subject in formula
Pressure, h are diaphragm thickness, and c is diaphragm side length, and v is linearity parameters.
The PLC controller is made of ARM programmable chip and the control unit write.
A kind of method of sampling of fuel oil difference flame height combustion intermediate product intellegent sampling device, comprising the following steps:
Step 1: first according to burning different zones, selecting measurement position, place sampling apparatus；Then PLC control is pressed
Device switch；Micro-suction pump work, solenoid valve B are opened；Sampling gas-guide tube starts to collect gas, and thermocouple and electromagnetic flowmeter are anti-
Live signal is presented to PLC controller；
Step 2: the flow velocity of gas in electromagnetic flowmeter detection sampling gas-guide tube passes through formula P0=(V2*L)/(C2* R) meter
Calculation obtains pressure value P at sampling gas-guide tube0；Wherein V is gas flow rate in pipe, and R is pipe radius, and L is air guide length of tube, and C is
Coefficient, wherein coefficient C=R(1/6)/ n, n are wall surface roughnesses, and value range is 0.011~0.014；
Step 3: pressure p in sampler bag being detected by silicon pressure drag micro-pressure sensor, calculation formula isP is the pressure that diaphragm is subject in formula, and h is diaphragm thickness, and c is diaphragm side length, and v is linearity ginseng
Number；
Step 4: the P according to obtained in step 2 and step 30And P, it is controlled by PLC controller: working as P0When < 2P, increase
Big micro-suction pump flow velocity, until P0When=2P, micro-suction pump is run with current constant flow rate, is simultaneously closed off solenoid valve B, is opened
Open solenoid valve A；To P > 1.5P0When, solenoid valve A is closed, while solenoid valve B is opened, cleaning sampling gas-guide tube is run five minutes
Afterwards, solenoid valve B is closed, micro-suction pump stops working, and completes sampling.
The utility model has the beneficial effects that
A kind of intellegent sampling device of the measurement fuel burning different zones intermediate product of the utility model, for acquire with
Fuel oil difference combustion phases intermediate product based on diesel oil, the device can choose different surveys according to the characteristic of combustion flame
Pilot can accurately indicate different combustion phases；Simultaneously in view of fuel burning be one by liquid phase to gas phase again to solid phase
The complex process for forming particulate matter, evaluates fuel oil attribute by sampling, studying combustion intermediate product, to fuel oil product
It is analyzed.It is sampled while including solid-state and gaseous state combustion intermediate product in sampling process, using PLC controller, foundation
The different phase of fuel burning proposes the control methods such as sampling time, flow, pressure, to the gas of fuel burning different zones
Intelligence, precisely sampling are carried out with solid intermediate product.The utility model is simple with sampling apparatus structure, sampling is comprehensive, operation
The advantages that intelligent.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of intellegent sampling device for measuring fuel burning different zones intermediate product.
Fig. 2 is the specific control flow chart of intelligence control system PLC controller.
Wherein 1- samples gas-guide tube；2- thermocouple；3- sliding support；4- electromagnetic flowmeter；5- cooling tube；6-PLC control
Device；7- micro-suction pump；8- solenoid valve B；9- branch pipe；10- glass fiber filter；11- solenoid valve A；12- silicon pressure drag minute-pressure passes
Sensor；13- sampler bag；14- combustion flame.
Specific embodiment
The utility model is further described below in conjunction with attached drawing, examples of the embodiments are shown in the accompanying drawings,
In from beginning to end same or similar label indicate same or similar element or element with the same or similar functions.Below
It is exemplary by reference to the embodiment that attached drawing describes, it is intended to for explaining the utility model, and should not be understood as to this reality
With novel limitation.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
The orientation or position of the instructions such as degree ", " thickness ", "upper", "lower", " axial direction ", " radial direction ", "vertical", "horizontal", "inner", "outside"
Relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, without
It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be construed as a limitation of the present invention.In addition, term " first ", " second " are used for description purposes only, and should not be understood as
Indication or suggestion relative importance or the quantity for implicitly indicating indicated technical characteristic." first ", " are defined as a result,
Two " feature can explicitly or implicitly include one or more of the features.It is " more in the description of the present invention,
It is a " it is meant that two or more, unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention.
A kind of measurement fuel burning different zones intermediate product of the utility model is illustrated below with reference to schematic diagram
Intellegent sampling device and method.It significantly raises up since the flame that fuel burning is formed has, flame core, internal flame, flame envelope can be divided into,
Rationally to acquire combustion intermediate product, precise measurement displacement can choose multiple positions as measurement point, and multiple measurement points are corresponding
The position of more sampling gas-guide tubes and thermocouple；A kind of measurement fuel burning different zones intermediate product provided by the utility model
Intellegent sampling device, can voluntarily adjust number and the position of measurement point according to the actual situation.
The utility model chooses five measurement points, as shown in Figure 1, a kind of fuel oil difference flame height combustion intermediate product intelligence
Can sampling apparatus, comprising: sampling gas-guide tube 1, thermocouple 2, sliding support 3, electromagnetic flowmeter 4, cooling tube 5, PLC controller 6,
It micro-suction pump 7, solenoid valve B8, branch pipe 9, glass fiber filter 10, solenoid valve A11, silicon pressure drag micro-pressure sensor 12 and adopts
Sample bag 13.
The sliding support 3 selects 2, is vertically connecting apart from the 1/3 of thermocouple 2 and 2/3 in sampling gas-guide tube 1 respectively
It connects, for adjusting the height and distance of sampling gas-guide tube 1, chooses suitable height and distance as needed and sampled.
Five samplings gas-guide tube 1 is the straight long tube that diameter is 1.5~2.5mm, high temperature resistant, for conveying sampling gas
Body.
The thermocouple 2 is sequentially connected electromagnetic flowmeter 4 by sampling gas-guide tube 1, cooling tube 5, micro-suction pump 7, divides
Manifold 9 and glass fiber filter 10；
One branch pipe is set at the branch pipe 9, is connected to outside air；Solenoid valve B8 is provided on the branch pipe；
The PLC controller 6 is successively connected with electromagnetic flowmeter 4 and solenoid valve A11；The thermocouple 2, solenoid valve B8 and
Micro-suction pump 7 is connect by electromagnetic flowmeter 4 and solenoid valve A11 with PLC controller 6.
Five thermocouples 2 are mounted on the front-end surface of sampling gas-guide tube 1, for measuring flame temperature；Thermocouple 2 selects
With thin diameter thermocouple, and it is cased with elongated porcelain tube, it is possible to reduce thermal coefficient improves heat release of the flame to thermal cross
Coefficient, reduces conductive heat loss, and thermocouple 2 connects PLC controller 6, shows the flame temperature T measured on it.
The flow velocity of gas in five electromagnetic flowmeters 4 detection sampling gas-guide tube 1, and according to formula P0=(V2*L)/
(C2* R) (M1) can calculate where at pressure P0, wherein V is gas flow rate in gas-guide tube, and R is pipe radius, and C is to be
Number, C=R(1/6)/ n, L are air guide length of tube, and n is wall surface roughness, and value range is 0.011~0.014.
Five cooling tubes 5 are cooling device, for reducing the gas temperature in sampling gas-guide tube 1, prevent gas temperature
Spend high destruction sampler bag 13.
Five glass fiber filters 10 are used to filter, adsorb, acquire solid-state combustion intermediate product in sample gas,
Glass fiber filter 10 is extracted after experiment and obtains combustion intermediate product particulate solid, is used for experimental study.
7 flow rates of micro-suction pump are 0.2~1L/min.
The sampler bag 13 is the material bag of rubber system, and bag internal volume is 1L, and sack is 6~8mm of diameter circle bottleneck, side
Just sample gas detecting instrument is connected.
The silicon pressure drag micro-pressure sensor 12 includes power sensing structure, for detecting pressure size in sampler bag 13；The quick knot of power
Structure is double nose girder membrane structures, and when there is pressure to act on pressure-sensitive diaphragm, pressure-sensitive diaphragm deforms, due to piezoresistive effect,
Resistance value changes, and passes through formula(M2) it calculates it can be concluded that pressure value.
As shown in Fig. 2, the PLC controller 6 receive and show 2 temperature parameter T of thermocouple, 4 flow velocity V of electromagnetic flowmeter,
Airway pressure P is calculated by above-mentioned formula in the pressure parameter P of silicon pressure drag micro-pressure sensor 120, PLC controller editor
Program and control unit: work as P0When < 2P, increase micro-suction pump flow velocity, until P0When=2P, micro-suction pump is with current constant
Solenoid valve B is closed in flow velocity operation, and opens solenoid valve A, micro-suction pump is run with current constant flow rate, until P > 1.5P0When,
Solenoid valve A11 where this silicon pressure drag micro-pressure sensor 12 is closed, while solenoid valve B8 is opened, after operation five minutes, place
Solenoid valve B8 close, micro-suction pump 7 stops working, this sampler bag 13 and the sampling of glass fiber filter 10 are completed, other are several
Group sampling apparatus works on, until five groups of wholly off work of micro-suction pump 7, sampling is completed.If test needs, can also be real
Existing five groups are tested respectively.
The course of work and installation method of the present apparatus, first install sampling apparatus, and check device is reliably fixed, concrete operations
The following steps are included:
Step 1: first according to burning different zones, selecting measurement position, place sampling apparatus；
Step 2: pressing the switch of PLC controller 6；
Step 3: micro-suction pump 7 works, and solenoid valve B8 is opened；
Step 4: thermocouple 2 and electromagnetic flowmeter 4 feed back live signal, calculate P by formula (M1) and (M2)0And P,
Work as P0When < 2P, increase 7 flow velocity of micro-suction pump；Until P0When=2P, micro-suction pump 7 is run with current constant flow rate, and same
When close solenoid valve B8, opens solenoid valve A11；To P > 1.5P0When, close solenoid valve A11, opens solenoid valve B8, cleaning sampling
Gas-guide tube 1；
Step 5: after operation five minutes, the solenoid valve B8 at place is closed, and micro-suction pump 7 stops working, 13 He of sampler bag
The sampling of glass fiber filter 10 is completed.
Above to a kind of intellegent sampling of measurement fuel burning different zones intermediate product provided by the utility model
Device and method is described in detail, and applies specific case herein and carries out to the principles of the present invention and embodiment
It illustrates, is noted that the above is only the preferred embodiment of the utility model only, be not limited to practical
It is novel.It is practical new to should be included in this for be made any modification and improvement etc. within the spirit and principle of the utility model
In the protection scope of type.
Claims (7)
1. a kind of intellegent sampling device for measuring fuel burning different zones intermediate product, which is characterized in that including multiple samplings
Gas-guide tube (1), thermocouple (2), sliding support (3), electromagnetic flowmeter (4), cooling tube (5), PLC controller (6), miniature pumping
Pump (7), solenoid valve B(8), branch pipe (9), glass fiber filter (10), solenoid valve A(11), silicon pressure drag micro-pressure sensor (12)
With sampler bag (13)；
Multiple sampling gas-guide tubes (1) are to be arranged in parallel up and down, and thermocouple (2) are installed in one end of sampling gas-guide tube (1),
It is placed among combustion flame (14)；The other end connects sampler bag (13)；The resistance micro-pressure sensor (12) is set to sampler bag
(13) with sampling gas-guide tube (1) junction；
The sliding support (3) is vertically connected with sampling gas-guide tube (1)；The thermocouple (2) is by sampling gas-guide tube (1) successively
Connect electromagnetic flowmeter (4), cooling tube (5), micro-suction pump (7), branch pipe (9) and glass fiber filter (10)；
One branch pipe is set at the branch pipe (9), is connected to outside air；Solenoid valve B(8 is provided on the branch pipe)；It is described
Solenoid valve A(11) it is set between glass fiber filter (10) and sampler bag (13)；
The PLC controller (6) is successively connected with electromagnetic flowmeter (4) and solenoid valve A(11)；The thermocouple (2), solenoid valve
B(8) and micro-suction pump (7) passes through electromagnetic flowmeter (4) and solenoid valve A(11) it is connect with PLC controller (6).
2. a kind of intellegent sampling device for measuring fuel burning different zones intermediate product according to claim 1, special
Sign is that the sliding support (3) is no less than 1；The straight long tube that the diameter of sampling gas-guide tube (1) is 1.5 ~ 2.5mm, is used
In conveying sample gas.
3. a kind of intellegent sampling device for measuring fuel burning different zones intermediate product according to claim 1, special
Sign is that the electromagnetic flowmeter (4) is used to detect the flow velocity V of sampling gas-guide tube (1) interior gas, and according to formulaCalculate pressure P0；Wherein V is gas flow rate in pipe, and R is pipe radius, and L is air guide pipe range
Degree, C is coefficient, wherein coefficient, n is wall surface roughness, and value range is 0.011 ~ 0.014.
4. a kind of intellegent sampling device for measuring fuel burning different zones intermediate product according to claim 1, special
Sign is that the sampler bag (13) is rubber material, and volume is 0.8 ~ 1.2L, and the sack of sampler bag (13) is 6 ~ 8mm's of diameter
Round bottleneck.
5. a kind of intellegent sampling device for measuring fuel burning different zones intermediate product according to claim 1, special
Sign is that micro-suction pump (7) flow rates are 0.2 ~ 1L/min.
6. a kind of intellegent sampling device for measuring fuel burning different zones intermediate product according to claim 1, special
Sign is that the silicon pressure drag micro-pressure sensor (12) includes power sensing structure, for detecting sampler bag (13) interior pressure size；Pass through
Formula, pressure value p is calculated, in formulaFor the pressure that diaphragm is subject to, h is diaphragm thickness, c
For diaphragm side length,For linearity parameters.
7. a kind of intellegent sampling device for measuring fuel burning different zones intermediate product according to claim 1, special
Sign is that the PLC controller (6) is made of ARM programmable chip and control unit.
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| CN201821932160.XU CN209589599U (en) | 2018-11-22 | 2018-11-22 | A kind of intellegent sampling device measuring fuel burning different zones intermediate product |
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| CN201821932160.XU CN209589599U (en) | 2018-11-22 | 2018-11-22 | A kind of intellegent sampling device measuring fuel burning different zones intermediate product |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855921A (en) * | 2018-11-22 | 2019-06-07 | 江苏大学 | A kind of intellegent sampling device and the method for sampling measuring fuel burning different zones intermediate product |
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2018
- 2018-11-22 CN CN201821932160.XU patent/CN209589599U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855921A (en) * | 2018-11-22 | 2019-06-07 | 江苏大学 | A kind of intellegent sampling device and the method for sampling measuring fuel burning different zones intermediate product |
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