CN105424105B - Dust pelletizing system is responsible for air volume detecting method and on-line measuring device - Google Patents
Dust pelletizing system is responsible for air volume detecting method and on-line measuring device Download PDFInfo
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- CN105424105B CN105424105B CN201510745818.0A CN201510745818A CN105424105B CN 105424105 B CN105424105 B CN 105424105B CN 201510745818 A CN201510745818 A CN 201510745818A CN 105424105 B CN105424105 B CN 105424105B
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- pelletizing system
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
Abstract
The present invention provides a kind of dust pelletizing system supervisor's air volume detecting method and a kind of dust pelletizing system is responsible for air quantity on-line measuring device, is related to detection of gas flow rate technical field, and dust pelletizing system supervisor's air volume detecting method includes：Establish fun for inner efficiency η and power of motor NdBetween functional relation the step of, obtain pipeline in atmospheric density ρ, wind turbine transmission efficiency ηc、The step of pipe diameter D data, obtains duct static pressure H from the dust pelletizing system course of workjAnd power of motor NdThe step of data and the step of calculate corresponding dust pelletizing system supervisor's airflow value.The dust pelletizing system supervisor's airflow value and the actual air volume value of dust pelletizing system supervisor being calculated using the detection method are very close, dust pelletizing system supervisor's airflow value is obtained by calculation completely, there is no causing accuracy of detection to reduce because of dust adhesion, higher precision can be always maintained at.
Description
Technical field
The present invention relates to detection of gas flow rate technical field, more particularly to a kind of dust pelletizing system supervisor's air volume detecting method with
On-line measuring device.
Background technology
In the volume packet dust removal system for workshop especially cigarette making and tipping machine of cigar mill concentrates technique wind power dedusting system, supervisor's pressure
Power and air quantity are two most basic monitor control indexes.Wherein, main pipe pressure is the core for ensureing cigarette and normally producing with processing quality
Heart index, and air quantity index is to ensure the key point of wind-force stable supplying.It is embodied in cigarette making and tipping machine technique wind power dedusting system
Adjusting action on, be exactly by be responsible for air quantity detected value control supervisor mend valve area, to ensure high pressure centrifugal ventilator
Operating point be in stable operating mode section.When system loading is smaller, airflow value is less than under system stable operation institute required airflow
In limited time, surge will occur for wind turbine；When system loading is larger, and airflow value is more than the upper limit of system stable operation institute required airflow, wind
Overcurrent will occur for machine frequency converter.Once both extreme cases occur, control system will adjust according to air volume test value and mend air-valve
Aperture, to ensure fan operation in rational operation interval.In Practical Project, air flow sensor is due to the shadow by following factors
It rings, measurement accuracy is difficult to meet the requirements：By running for a long time, a large amount of dust can be adhered on sensor, so as to cause inspection
Surveying precision reduces, and relatively large deviation occurs in testing result.
Invention content
The technical problem to be solved by the present invention is to：A kind of dust pelletizing system supervisor air volume detecting method is provided, the detection is passed through
Supervisor's air quantity result that method obtains is accurately, precision is higher and is not influenced by pipeline dust；It is improved as further, this
Invention also provides a kind of dust pelletizing system supervisor's air quantity on-line measuring device based on above-mentioned detection method.
In order to solve the above-mentioned technical problem 1, the present invention adopts the following technical scheme that：A kind of dust pelletizing system supervisor air volume test
Method includes the following steps：
Step 1: establishing fun for inner efficiency η and power of motor NdBetween functional relation：
The duct static pressure H that acquisition dust pelletizing system each time point after starting to stable operation surveys firstj, pipe in wind
Measure Q and power of motor ND'sData recycle formulaFan performance curve efficiency parameters are calculated,
Thus η-N are set updScatter plot simultaneously carries out polynomial regression analysis to it and obtains fun for inner efficiency η and power of motor NdFunction
Relational expression；
Step 2: obtaining atmospheric density ρ, wind turbine transmission efficiency η in pipelinec、The data of pipe diameter D；
Step 3: starting dust pelletizing system, the duct static pressure H detected from dust pelletizing system is obtainedjAnd power of motor ND's
Data；
Step 4: after completing above three step, in conjunction with the fun for inner efficiency η obtained in step 1 and power of motor Nd's
Simultaneously corresponding dust pelletizing system can be calculated in the various parameter values substitution following formula that above-mentioned steps two, three obtain by functional relation
It is responsible for airflow value：；
In above formula,,,, 。
As another aspect of the present invention, the present invention also provides a kind of, and dust pelletizing system supervisor's air quantity based on the above method exists
Line detector comprising：
Collecting unit, for acquiring duct static pressure H when dust pelletizing system workjAnd power of motor NdData；
Storage unit is at least stored with following data：Atmospheric density ρ, wind turbine transmission efficiency η in pipelinec、Pipe diameter D's
Fun for inner efficiency η and power of motor N in the step of parameter value, claim 1 onedFunctional relation and step 4 in calculate
Dust pelletizing system is responsible for the calculation formula of airflow value；
Computing unit, the real-time airflow value for calculating dust pelletizing system supervisor, the real-time airflow value is according to collecting unit
The duct static pressure H of acquisitionjAnd power of motor NdData are calculated according to the method for step 4 in claim 1；
Output unit, for exporting the counted real-time airflow value of computing unit.
The advantageous effect that the present invention obtains is：Dust pelletizing system supervisor air volume detecting method provided by the invention is initially set up
Fun for inner efficiency η and power of motor NdFunctional relation, then according to the duct static pressure H surveyedjAnd power of motor NdAnd pipe
Atmospheric density ρ, wind turbine transmission efficiency η in roadc、The numerical computations of pipe diameter D go out dust pelletizing system supervisor's airflow value, using the inspection
The dust pelletizing system supervisor's airflow value and the actual air volume value of dust pelletizing system supervisor that survey method is calculated are very close, in above-mentioned inspection
Only it is to initially set up fun for inner efficiency η and power of motor N in survey methoddFunctional relation when need to use air quantity sensing
Air flow sensor can be stopped or removed by device after the step of completing to establish above-mentioned functional relation, subsequent dedusting system
System supervisor's airflow value is obtained by calculation completely, there is no causing accuracy of detection to reduce because of dust adhesion, therefore passes through
Dust pelletizing system supervisor's air quantity that this method obtains can be always maintained at higher precision.
Description of the drawings
Fig. 1 is the implementing procedure figure that dust pelletizing system is responsible for air volume detecting method in the present invention；
Fig. 2 is the composed structure schematic diagram that dust pelletizing system is responsible for air quantity on-line measuring device in the present invention；
Fig. 3 is η-NdScatter plot；
Fig. 4 is FC01 measured values and calculated value comparison diagram；
Fig. 5 is FC02 measured values and calculated value comparison diagram；
Fig. 6 is FC03 measured values and calculated value comparison diagram；
In Fig. 4-6, α is measured value, αxFor calculated value.
Specific implementation mode
For the ease of the understanding of those skilled in the art, the present invention is made further with reference to embodiment and attached drawing
Bright, the content that embodiment refers to not is limitation of the invention.
The distinguishing feature of the present invention is calculated by establishing the functional relation between power of motor and air quantity
Dust pelletizing system is responsible for airflow value, to avoid limitation or dust attachment of the air flow sensor by mounting condition from being influenced.
Specifically, as shown in Figure 1, the implementing procedure of the present invention includes the following steps：
Step 1: establishing fun for inner efficiency η and power of motor NdBetween functional relation：
The duct static pressure H that acquisition dust pelletizing system each time point after starting to stable operation surveys firstj, pipe in wind
Measure Q and power of motor ND'sData recycle formulaCalculate fan performance curve efficiency ginseng
Number, thus sets up η-NdScatter plot simultaneously carries out polynomial regression analysis to it and obtains fun for inner efficiency η and power of motor NdLetter
Number relational expression；
Step 2: obtaining atmospheric density ρ, wind turbine transmission efficiency η in pipelinec、The data of pipe diameter D；
Step 3: starting dust pelletizing system, the duct static pressure H detected from dust pelletizing system is obtainedjAnd power of motor ND's
Data；
Step 4: after completing above three step, in conjunction with the fun for inner efficiency η obtained in step 1 and power of motor Nd's
Simultaneously corresponding dust pelletizing system can be calculated in the various parameter values substitution following formula that above-mentioned steps two, three obtain by functional relation
It is responsible for airflow value：；
In above formula,,,, 。
Below by smart to the detection of the present invention for Ganzhou cigar mill technique wind power dedusting system FC01, FC02 and FC03
Degree is verified.
First by data export function, dust pelletizing system is obtained from the duct static pressure H for starting to stable operationj, pipe in wind
Measure Q and power of motor ND'sFollowing basic parameter is also predefined before the computation in data sample：
Caliber D：It is Φ 530, i.e. 0.53m to take the diameter of fan inlet pipeline, this example；；
Transmission efficiency ηc：It determines that transmission efficiency value, this example are driven using shaft coupling according to the kind of drive, takes 0.98；
Atmospheric density ρ：According to local height above sea level and dedusting room temperature computation, this example takes ρ=1.2.
Secondly, it needs to convert engineering unit, such as by power unit from kilowatt becoming watt, air measuring unit m3/ h,
M should be turned to3/ s, in order to calculate.
Followed by formulaFan performance curve efficiency parameters are calculated, it is possible thereby to build
Erect η-N as shown in Figure 3dScatter plot（In figure 3, horizontal axis indicates power of motor Nd, unit W, longitudinal axis expression fun for inner efficiency
η）, fun for inner efficiency η and power of motor N can be obtained by carrying out polynomial regression analysis to itdFunctional relation：
y = 1.63068E-28x6 - 3.0933E-23x5 + 1.91426E-18x4 - 3.27045E-14x3 -
7.90689E-10x2 + 3.41771E-05x + 0.205984651
Coefficient R 2=0.953705777.Here x is power of motor, and y is fun for inner efficiency.
Pass through fun for inner efficiency η and power of motor NdFunctional relation can be according to the power of motor value meter that frequency converter is shown
Internal efficiency efficiency value is applied to following formula by the fun for inner efficiency value for calculating difference：
,
It should be noted that in above formula,,,,, thus can acquire more accurately dust pelletizing system supervisor Wind Coverage Calculation value.
It will be carried out pair with by the measured value that air flow sensor detects by calculated value obtained by the above method below
Than, FC01, FC02, FC03 measured value and calculated value comparison diagram are shown in Fig. 4, Fig. 5, Fig. 6 respectively, calculate by contrast FC01 air volume meter
Calculation value relative average debiation is 1.9%, and FC02, FC03 Wind Coverage Calculation value relative average debiation are respectively 2.7% and 2.6%.In Fig. 4-
In 6, horizontal axis indicates that time, unit S, the longitudinal axis indicate air quantity, unit m3/S。
By above-mentioned experiment it was determined that the dust pelletizing system that detection method provided by the invention obtains is responsible for airflow value and is removed
The actual air volume value of dirt system superintendent is very close, is only to initially set up fun for inner efficiency η and electricity in above-mentioned detection method
Acc power NdFunctional relation when need to use air flow sensor, when complete establish above-mentioned functional relation the step of after can will
Air flow sensor is stopped or removes, and subsequent dust pelletizing system supervisor airflow value is obtained by calculation completely, and there is no because of powder
Dirt adheres to and the problem that causes accuracy of detection low, thus the dust pelletizing system supervisor's air quantity obtained by this method can be always maintained at it is higher
Precision.
Based on above-mentioned detection method, the present invention further also provides a kind of dust pelletizing system supervisor air quantity on-line measuring device,
As shown in Fig. 2, dust pelletizing system supervisor's air quantity on-line measuring device includes：
Collecting unit, for acquiring duct static pressure H when dust pelletizing system workjAnd power of motor NdData；Specifically, on
State duct static pressure H when dust pelletizing system workjData can be acquired by the pressure sensor being responsible for mounted on dust pelletizing system
It obtains, power of motor NdThe data that can be directly detected using fan frequency converter.
Storage unit is at least stored with following data：Atmospheric density ρ, wind turbine transmission efficiency η in pipelinec、Pipe diameter D's
Fun for inner efficiency η and power of motor N in the step of parameter value, claim 1 onedFunctional relation and step 4 in calculate
Dust pelletizing system is responsible for the calculation formula of airflow value；
Computing unit, the real-time airflow value for calculating dust pelletizing system supervisor, the real-time airflow value is according to collecting unit
The duct static pressure H of acquisitionjAnd power of motor NdData are calculated according to the method for step 4 in claim 1；
Output unit, for exporting the counted real-time airflow value of computing unit.
Above-mentioned dust pelletizing system is responsible for air quantity on-line measuring device since air flow sensor in the prior art, dedusting is omitted
System superintendent's airflow value is obtained by computing unit operation completely, therefore there is no cause to detect because of dust adhesion air flow sensor
Precision is by low problem, therefore dust pelletizing system supervisor's air quantity on-line measuring device can be always maintained at higher precision.
Above-described embodiment is the preferable implementation of the present invention, and in addition to this, the present invention can be realized with other manner,
Do not depart from the technical program design under the premise of it is any it is obvious replacement within protection scope of the present invention.
In order to allow those of ordinary skill in the art more easily to understand the improvements of the present invention compared with the existing technology, this
Some attached drawings of invention and description have been simplified, and for the sake of clarity, present specification is omitted some other members
Element, those of ordinary skill in the art should be aware that the element that these are omitted also may make up present disclosure.
Claims (2)
1. dust pelletizing system is responsible for air volume detecting method, include the following steps：
Step 1: establishing fun for inner efficiency η and power of motor NdBetween functional relation：
The duct static pressure H that acquisition dust pelletizing system each time point after starting to stable operation surveys firstj, pipe in air quantity Q and
Power of motor ND'sData recycle formulaFan performance curve efficiency parameters are calculated, thus
Set up η-NdScatter plot simultaneously carries out polynomial regression analysis to it and obtains fun for inner efficiency η and power of motor NdFunctional relation
Formula；
Step 2: obtaining atmospheric density ρ, wind turbine transmission efficiency η in pipelinec、The data of pipe diameter D；
Step 3: starting dust pelletizing system, the duct static pressure H detected from dust pelletizing system is obtainedjAnd power of motor ND'sData；
Step 4: after completing above three step, in conjunction with the fun for inner efficiency η obtained in step 1 and power of motor NdFunction
Simultaneously corresponding dust pelletizing system supervisor can be calculated in the various parameter values substitution following formula that above-mentioned steps two, three obtain by relational expression
Airflow value：；
In above formula,,,, 。
2. a kind of dust pelletizing system is responsible for air quantity on-line measuring device, based on detection method described in claim 1 detection dedusting system
System supervisor's air quantity comprising：
Collecting unit, for acquiring duct static pressure H when dust pelletizing system workjAnd power of motor NdData；
Storage unit is at least stored with following data：Atmospheric density ρ, wind turbine transmission efficiency η in pipelinec、The parameter of pipe diameter D
Fun for inner efficiency η and power of motor N in the step of value, claim 1 onedFunctional relation and step 4 in calculate dedusting
The calculation formula of system superintendent's airflow value；
Computing unit, the real-time airflow value for calculating dust pelletizing system supervisor, the real-time airflow value are acquired according to collecting unit
Duct static pressure HjAnd power of motor NdData are calculated according to the method for step 4 in claim 1；
Output unit, for exporting the counted real-time airflow value of computing unit.
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| CN106153128A (en) * | 2016-03-24 | 2016-11-23 | 李建锋 | Compressor flow based on gas temperature rise and efficiency measurement instrument |
| CN108249164A (en) * | 2016-12-29 | 2018-07-06 | 贵州中烟工业有限责任公司 | A kind of application method of vacuum control system |
| CN108263862A (en) * | 2016-12-30 | 2018-07-10 | 贵州中烟工业有限责任公司 | A kind of stem blast system and its vacuum control system |
| CN108661930A (en) * | 2018-05-14 | 2018-10-16 | 广东环葆嘉节能科技有限公司 | A kind of air quantity visual control method and device |
| CN109296558A (en) * | 2018-11-09 | 2019-02-01 | 天津瑞能电气有限公司 | A kind of method for fast measuring of blower actual motion air quantity |
| CN111617561B (en) * | 2019-02-28 | 2021-05-18 | 宁波方太厨具有限公司 | Filtering device replacement, cleaning and detection method based on equipment parameter detection |
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| GB2313197A (en) * | 1996-05-08 | 1997-11-19 | Advanced Energy Monitor Syst | Measuring pump flow rate |
| CN103604470A (en) * | 2013-12-10 | 2014-02-26 | 国家电网公司 | Method for measuring fan flow in real time according to DCS (distributed control system) data |
| CN103836692A (en) * | 2014-02-28 | 2014-06-04 | 广东威灵电机制造有限公司 | Range hood, and method and system for monitoring air volume of range hood |
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2015
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2313197A (en) * | 1996-05-08 | 1997-11-19 | Advanced Energy Monitor Syst | Measuring pump flow rate |
| CN103604470A (en) * | 2013-12-10 | 2014-02-26 | 国家电网公司 | Method for measuring fan flow in real time according to DCS (distributed control system) data |
| CN103836692A (en) * | 2014-02-28 | 2014-06-04 | 广东威灵电机制造有限公司 | Range hood, and method and system for monitoring air volume of range hood |
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Effective date of registration: 20211201 Address after: 311816 1st floor, South District, No. 5 plant, No. 9, Qianxi Road, Taozhu street, Zhuji City, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Nanhua nuclear Sanli Technology Development Co.,Ltd. Address before: No. 160, Jiefang West Road, Zhengxiang District, Hengyang City, Hunan Province Patentee before: HUNAN SUNNY TECHNOLOGY ENGINEERING CO.,LTD. |
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