CN108906836A - The air volumematching collection processing method of more emission point exhaust gas - Google Patents
The air volumematching collection processing method of more emission point exhaust gas Download PDFInfo
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- CN108906836A CN108906836A CN201810693920.4A CN201810693920A CN108906836A CN 108906836 A CN108906836 A CN 108906836A CN 201810693920 A CN201810693920 A CN 201810693920A CN 108906836 A CN108906836 A CN 108906836A
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- emission point
- value
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- blower
- frequency
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
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- Ventilation (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The invention proposes a kind of air volumematching collection processing methods of more emission point exhaust gas, solve the problems, such as that prior art systems are cumbersome, energy consumption is high.This method includes the air quantity that following sequential steps S1. measures each emission point, value Q1, Q2 ... QN；S2. institute's value in step S1 is subjected to equal proportion reduction, value A1, A2 ... AN；S3. to 0 into step S2 between institute's value summation, all issuable different discharge numerical quantities carry out the total M kinds of inductive statistics；S4. according to field working conditions, M kind difference discharge numerical quantity in step S3 is assigned to corresponding blower frequency；S5. the run signal of each emission point of system is taken, if emission point is run, the respective value in corresponding emission point assignment procedure S2 is assigned a value of zero if emission point is not run；S6. statistics addition is carried out to the discharge numerical quantity of all emission points in step S5；S7. the assignment relationship of gained numerical basis step S4 in step S6 is assigned to the corresponding frequency of blower, the frequency real-time change of the blower.
Description
Technical field
The present invention relates to technical field of waste gas treatment, particularly relating to one kind, low energy consumption, more emission point exhaust gas easy to operate
Air volumematching collection processing method.
Background technique
In exhaust treatment system and plant floor air-conditioning system, the problem of most frequently encountering is exactly blower fan system and needs
Mismatch problem between the gas airflow value of processing.Under normal circumstances, the Technology design personnel of project can be in Fan Selection
When appropriate reserved part surplus, the running frequency of blower is then adjusted by frequency converter, and then adjust the processing air quantity of blower.
When frequency converter adjusts motor operation frequency, what is generallyd use is to take gas point permutation and combination+frequency converter multistage speed control more
Mode, technical staff also, which uses, passes through PID arithmetic mode control by pressure value in pressure transmitter measurement air hose
The mode of fan operation frequency processed.
These types of mode is very the case where handling in single air duct gas or gas source airflow pressure substantially constant
Suitably.But when needing the multiple gas points of aggregation process, and each not phase of the air quantity of each gas emission point for needing to summarize
Together, drain time arbitrarily without in any governed situation of rule, collect processing mode and be just no longer applicable in by traditional air volumematching,
Specifically there is following reason：The first, take gas point permutation and combination+frequency converter multistage speed control mode is according to gas emission point quantity more
Permutation and combination is done, the design that then adds up conversion frequencies in turn result in system in this way with taking the radix that increases of gas point constantly to increase
Redundancy is cumbersome, is no longer appropriate for electrical process control and operator uses；The second, using according to measurement air duct wind pressure combination PID
The mode of algorithm control blower frequency can only guarantee that the pressure of pressure measurement point is stablized, and can guarantee air quantity in single air duct
Stablize, but to other it is numerous take gas point not accomplish that good airflow pressure controls, and then lead to plant site wind balance system
System is deteriorated；If third uses to reduce system control difficulty and keeps field device always-on, can undoubtedly increase
Adding many unnecessary systematic running costs includes electric energy, natural gas etc..
Summary of the invention
The present invention proposes a kind of air volumematching collection processing method of more emission point exhaust gas, solves multiple rows of in the prior art
The problem that system is cumbersome, energy consumption is high when putting exhaust-gas treatment.
The technical proposal of the invention is realized in this way：The air volumematching collection processing method of more emission point exhaust gas, including
Following sequential steps
S1. the air quantity of each emission point, value Q1, Q2 ... QN are measured；
S2. institute's value in step S1 is subjected to equal proportion reduction, value A1, A2 ... AN；
S3. to 0 into step S2 between institute's value summation, all issuable different discharge numerical quantities are concluded
Count total M kind；
S4. according to field working conditions, M kind difference discharge numerical quantity in step S3 is assigned to corresponding blower frequency；
S5. the run signal of each emission point of system is taken, if emission point is run, in corresponding emission point assignment procedure S2
Respective value is assigned a value of zero if emission point is not run；
S6. statistics addition is carried out to the discharge numerical quantity of all emission points in step S5；
S7. the assignment relationship of gained numerical basis step S4 in step S6 is assigned to the corresponding frequency of blower, the blower
Frequency real-time change.
As a preferred embodiment, in step S1
S11. the wind pressure of each emission point, value p1, p2 ... pN are measured；
In step S2
S21. by airflow value obtained in each emission point step S1 multiplied by being carried out after wind pressure value obtained in step S11 etc.
Scaled down obtains numerical value A1, A2 ... AN, carries out parameter rounding to above-mentioned numerical value according to actual condition.
As a preferred embodiment, in step S21
S211. after logarithm carries out parameter rounding, numerical value A1, A2 ... AN is integer or retains latter to decimal point
Position.
As a preferred embodiment, in step S4
S41. the same blower frequency corresponds to multiple and different discharge numerical quantities in step S3, multiple discharge amount numbers
It is worth continuously distributed in the different discharge numerical quantity of M kind.
After above-mentioned technical proposal, the beneficial effects of the invention are as follows：1, by comparing each emission point airflow value etc.
After example reduces and is cumulative, the operating condition mode of live emission point is simplified, compared to traditional permutation and combination isotype, program
Design flow has obtained effective reduction, reduces the field device wind balance adjustment time cycle, and consider each discharge
Influence of the point apart from factors such as waste gas treatment equipment pipeline distance, diameter, elbow quantity；2, original wind pressure+PID control is abandoned
Then the mode of blower frequency does corresponding accurately wind balanced design debugging by each emission point air quantity of precise measurement, in this way
The matching that can preferably guarantee the more emission point exhaust gas air quantity in workshop, adapts to the production requirement in workshop；3, Workshop Production can be with
Need to open corresponding exhaust equipment at any time according to production, and exhaust treatment system is also rounded blower according to workshop exhaust air rate in real time
Running frequency greatly reduces electric energy and natural gas loss in this way；4, this mode Principle of Process is easily understood, and practicability is very strong,
User's ability is required without too high profession.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is the schematic diagram of an embodiment of the present invention step S1, S2；
Fig. 2 is the schematic diagram of embodiment step S3；
Fig. 3 is the schematic diagram of embodiment step S4；
Fig. 4 is the schematic diagram of embodiment step S5；
Fig. 5 is the schematic diagram of step S6, S7 in the embodiment.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment：
The embodiment has 8 emission points.
As shown in Figure 1, being measured to the air quantity and wind pressure of each emission point, wind is usually can be used directly in the first step
Fast instrument, in the embodiment, the air quantity measured and wind pressure of each emission point are as follows：
| Air quantity (Q) | Wind pressure (p) | |
| Emission point 1 | 10000Nm3/h | 480pa |
| Emission point 2 | 10000Nm3/h | 530pa |
| Emission point 3 | 20000Nm3/h | 500pa |
| Emission point 4 | 20000Nm3/h | 620pa |
| Emission point 5 | 30000Nm3/h | 500pa |
| Emission point 6 | 40000Nm3/h | 440pa |
| Emission point 7 | 50000Nm3/h | 500pa |
| Emission point 8 | 60000Nm3/h | 500pa |
Above-mentioned air quantity and wind pressure are fixed value during the work time, will not be changed under normal circumstances.Why to wind
Amount and wind pressure measure mainly since each emission point is apart from waste gas treatment equipment pipeline distance, diameter, elbow number simultaneously
Amount is all different, it is therefore desirable to calculate each emission point to waste gas treatment equipment wind pressure pressure difference (frequency conversion fan performance number P=
Q*p/ (3600*1000* η 0* η 1), wherein Q is air quantity, and p is wind pressure, and η 0 and η 1 are respectively the internal efficiency and mechanical effect of blower
Rate, the two are fixed value, and therefore, determinant is mainly the product of airflow value and wind pressure value).
Second step, as shown in Figure 1, carrying out equal proportion contracting after the airflow value that each emission point measures is multiplied with wind pressure value
Subtract, value A1, A2 ... A8 after reduction, the ratio of reduction selects the number of a compromise, keeps value A1, A2 ... A8 most
It measures between 0 and 10, in order to subsequent calculating.In the embodiment, reduction ratio selection 5000000, and the basis after reduction
Requirement of the actual condition to system parameter accuracy carries out parameter rounding, makes value A1, A2 ... A8 integer or retains extremely
One decimal place, and obtain following values.
Third step, as shown in Fig. 2, (when all emission points do not discharge being by the minimum values of all emission point discharge amounts
0) it arrives between the maximum value (the as A1+A2+ ... A8 when all emission points discharge) of all emission point discharge amounts, Suo Youke
The different discharge numerical quantities that can be generated carry out inductive statistics and amount to M=45 kind, respectively 0/1/2/2.5/3/3.5/4/4.5/5/
5.5/6/6.5/7/7.5/8/8.5/9/9.5/10/10.5/11/11.5/12/12.5/13/13.5/14/14.5/15/15.5/
16/16.5/17/17.5/18/18.5/19/19.5/20/20.5/21/21.5/22/23/24。
4th step, as shown in figure 3, this 45 kinds different discharge numerical quantities are assigned to corresponding wind according to the operating condition at scene
Unit frequency tests out corresponding fan frequency converter frequency values according to each discharge numerical quantity, for example, as discharge numerical quantity Am
When=0, corresponding fan frequency converter frequency values are a numerical value xxHZ, when discharging numerical quantity Am=1, corresponding fan frequency converter
Frequency values are another numerical value xxHZ ..., and when discharging numerical quantity Am=24, corresponding fan frequency converter frequency values are another again
Numerical value xxHZ.Namely having 45 kinds of different discharge numerical quantities, corresponding fan frequency converter frequency values just have 45 kinds, but this is usually not
Meet reality, therefore, the discharge numerical quantity in a certain section can be assigned to the same blower frequency, i.e., the same blower frequency
Rate corresponds to multiple and different discharge numerical quantities, and this multiple described discharge numerical quantity connects in 45 kinds of different discharge numerical quantities
Continuous distribution, for example, when discharging numerical quantity Am=6/6.5/7/7.5/8/8.5/9/9.5/10, corresponding fan frequency converter frequency
Primary system one is set as xxHZ.
5th step, as shown in figure 4, the run signal of each emission point is taken, if emission point is run, corresponding emission point assignment
Numerical value in second step is assigned a value of zero if emission point is not run, for example, emission point 1 is run, then A1=1.0, emission point 2 is not
Operation, then A2=0 ..., emission point 8 are run, then A8=6.0.
6th step, as shown in figure 5, numerical value obtained in above-mentioned steps is carried out statistics addition, i.e. Am=A1+A2+ ...
A8, wherein the change of each emission point operating status can change final discharge numerical quantity, and therefore, the value of Am is according to each
The variation of a emission point operating status and real-time change.
7th step, as shown in figure 5, assigning numerical value Am obtained in above-mentioned steps to blower according to the assignment relationship of the 4th step
Corresponding frequency, to accomplish that blower frequency and the air quantity of more emission point exhaust gas match.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (4)
- The air volumematching collection processing method of the exhaust gas of emission point more than 1., it is characterised in that：Including following sequential stepsS1. the air quantity of each emission point, value Q1, Q2 ... QN are measured；S2. institute's value in step S1 is subjected to equal proportion reduction, value A1, A2 ... AN；S3. to 0 into step S2 between institute's value summation, all issuable different discharge numerical quantities carry out inductive statistics Total M kind；S4. according to field working conditions, M kind difference discharge numerical quantity in step S3 is assigned to corresponding blower frequency；S5. the run signal of each emission point of system is taken, it is corresponding in corresponding emission point assignment procedure S2 if emission point is run Numerical value is assigned a value of zero if emission point is not run；S6. statistics addition is carried out to the discharge numerical quantity of all emission points in step S5；S7. the assignment relationship of gained numerical basis step S4 in step S6 is assigned to the corresponding frequency of blower, the frequency of the blower Rate real-time change.
- 2. the air volumematching collection processing method of more emission point exhaust gas as described in claim 1, it is characterised in that：In step S1S11. the wind pressure of each emission point, value p1, p2 ... pN are measured；In step S2S21. by airflow value obtained in each emission point step S1 multiplied by carrying out equal proportion after wind pressure value obtained in step S11 Reduction obtains numerical value A1, A2 ... AN, carries out parameter rounding to above-mentioned numerical value according to actual condition.
- 3. the air volumematching collection processing method of more emission point exhaust gas as claimed in claim 2, it is characterised in that：Step S21 InS211. after logarithm carries out parameter rounding, numerical value A1, A2 ... AN is integer or retains to one decimal place.
- 4. the air volumematching collection processing method of more emission point exhaust gas as described in claim 1, it is characterised in that：In step S4S41. the same blower frequency corresponds to multiple and different discharge numerical quantities in step S3, and multiple discharge numerical quantities exist It is continuously distributed in the different discharge numerical quantity of M kind.
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| CN201810693920.4A CN108906836B (en) | 2018-06-29 | 2018-06-29 | Air volume matching collection processing method for waste gas with multiple discharge points |
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| CN201810693920.4A CN108906836B (en) | 2018-06-29 | 2018-06-29 | Air volume matching collection processing method for waste gas with multiple discharge points |
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| CN108906836A true CN108906836A (en) | 2018-11-30 |
| CN108906836B CN108906836B (en) | 2021-05-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110711755A (en) * | 2019-09-18 | 2020-01-21 | 南京林业大学 | Modularized industrial exhaust purification system and branch pipe number setting method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016041019A (en) * | 2014-08-13 | 2016-03-31 | 株式会社創発システム研究所 | Poultry house ventilation control system |
| CN107255351A (en) * | 2017-06-28 | 2017-10-17 | 广东美的暖通设备有限公司 | Rotation speed of fan control method, rotation speed of fan control system and air-conditioning |
| CN107642457A (en) * | 2016-07-20 | 2018-01-30 | 锐电科技有限公司 | A kind of wind-driven generator set of long-period control parameter self-adjusting system and method |
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2018
- 2018-06-29 CN CN201810693920.4A patent/CN108906836B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016041019A (en) * | 2014-08-13 | 2016-03-31 | 株式会社創発システム研究所 | Poultry house ventilation control system |
| CN107642457A (en) * | 2016-07-20 | 2018-01-30 | 锐电科技有限公司 | A kind of wind-driven generator set of long-period control parameter self-adjusting system and method |
| CN107255351A (en) * | 2017-06-28 | 2017-10-17 | 广东美的暖通设备有限公司 | Rotation speed of fan control method, rotation speed of fan control system and air-conditioning |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110711755A (en) * | 2019-09-18 | 2020-01-21 | 南京林业大学 | Modularized industrial exhaust purification system and branch pipe number setting method |
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