CN108386647A - A method of adjusting the dust removal by ventilation resistance of ducting - Google Patents
A method of adjusting the dust removal by ventilation resistance of ducting Download PDFInfo
- Publication number
- CN108386647A CN108386647A CN201810131846.7A CN201810131846A CN108386647A CN 108386647 A CN108386647 A CN 108386647A CN 201810131846 A CN201810131846 A CN 201810131846A CN 108386647 A CN108386647 A CN 108386647A
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- China
- Prior art keywords
- resistance
- board package
- hole board
- flange
- short tube
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/027—Throttle passages
- F16L55/02709—Throttle passages in the form of perforated plates
- F16L55/02718—Throttle passages in the form of perforated plates placed transversely
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/06—Power analysis or power optimisation
Abstract
The invention discloses a kind of methods adjusting the dust removal by ventilation resistance of ducting, belong to technical field of environment protection equipment.This method adjusts resistance balance by designing adjustable port plate-resistance ballancer, according to the Resistance Value of required balance select respective aperture than hole board package, for different pore size than hole board package carry out zero dimension analogue simulation in the duct, obtain the Resistance Value under each aperture ratio, and then coefficient of partial resistance is calculated, and draw a diagram, it is referred to for designer.The adjustable port plate-resistance ballancer that the present invention designs have many advantages, such as it is simple in structure, cheap, easy to operate, meanwhile, debug air hose resistance when can by replace different pore size than hole board package come achieve the purpose that tube resistance balance.In addition, the present invention can be to avoid resistance of pipe system debugging efforts, the Resistance Value that directly adjusts as needed selects the coefficient of partial resistance value of corresponding resistance balance device under the wind speed of current air hose, so to produce, design bring it is greatly convenient.
Description
Technical field
The invention belongs to technical field of environment protection equipment, and in particular to a method of adjusting the dust removal by ventilation resistance of ducting.
Background technology
In industrialization fast-developing today, the problem of each state all increasingly payes attention to air environmental pollution, China is faced
Pollution problem it is extremely serious, the especially dust pollution of air.This requires many factories to be largely equipped with dust removal by ventilation system
System, but there is also many problems to be resolved for dust pelletizing system, especially the problem of improving ventilating and purifying air system pressure imbalance
On, it is of great significance.
In current large-scale dust removal by ventilation pipe network, pipeline is sufficiently complex, and the node, exhausting point in pipeline are more, between each branch pipe
Parallel pipeline is formed, when entire design of pipe networks should do the EQUILIBRIUM CALCULATION FOR PROCESS of resistance and air quantity, ensure the air quantity that branched pipe is distributed
It is consistent with design air flow.To ensure that tube resistance balance is generally divided into two kinds in conventional method, one is adjustment branch diameter, the party
The resistance regulation of method is limited in scope, and the wind speed that in addition may result in inside section of tubing is excessive or too low, thereby results in pipeline
Internal dust blocks the abrasion aggravation or the sedimentation of dust of pipeline, or even useful material is taken away.Two is logical to add valve
It crosses and changes the aperture of valve to reach the resistance balance purpose of node, this method, which is adjusted, is mainly used for the smaller branch pipe of caliber
On, but larger caliber is less applicable in, no matter main cause is the electric and pneumatic operation of bigbore valve, price ratio
Costly.Regulating valve generally uses butterfly valve or gate valve, and there are Biased flow phenomenon, abrasion is leaked out serious；If valve is excessive, initial cost
It certainly will increase.
Resistance balance device is widely used in market in recent years, is advantageous in that its is simple in structure, makes peace
Dress is convenient, and cost price is cheap, avoids the Biased flow phenomenon of fluid in pipeline, and it is that fluid occurs inside pipeline to increase resistance principle
It reduces suddenly and the mode of sudden enlargement generates vortex to increase local resistance, the increasing inhibition effect under which is apparent.Meanwhile
Difference that the calculating of resistance balance device internal diameter is calculated by parallel pipeline node determines, relative to the workload of valve debugging, saves
Many loaded down with trivial details steps are gone.
Resistance balance device is due to the characteristic of its own, then it also necessarily has a specific requirement in use, one, it
Structure snd size once it is determined that cannot be adjusted；Two, due to its uncontrollable factor, it is desirable that designer is in pipe
When net changes, resistance balance is re-started to resistance of pipe system, and calculation and check is re-started to all resistance balance devices；
Three, usually carefully whether using resistance balance device need to be considered by the constraint of field condition to the dedusting pipe network of transformation；Four, for mill
The larger dust of damage property needs to carry out anti-wear processing to resistance balance device.
The structure size of most of existing resistance balance device is once it is determined that cannot be modified, if pipe currently on the market
When the resistance of net changes, original resistance balance device will be no longer applicable in, and be needed according to existing resistance balance value again more
Renew resistance balance device, expends substantial contribution.And what resistance balance device carried out resistance regulation is that its internal caliber is (interior at all
Pipe) size, if only the resistance balance of pipe network is carried out by changing resistance balance device inner tube diameter size, it is entire compared with than replacing
Resistance balance device not only greatly reduces the use of production material, can also reduce relative to the money for replacing entire resistance balance device cost
Gold.For part resistance-adjustable in market resistance balance device there are mainly two types of, one for Adjsutable wear-resisting resistance balancer (application
People：China Metallurgical Southern Co. Engineering Technology Co., Ltd, inventor：Lv Yongpeng, application number：201520803123.9), but the resistance balance
Device is complicated compared to general resistance balance device, dismantling is difficult, and the opening of short tube is more to cause air-tightness to be deteriorated, in addition the resistance
Trepanning installation pressure measurement short tube carries out drag measurement in force equalizer, not only increases cost, also illustrates that the resistance balance device carries out
Debugging efforts need to be carried out when resistance balance.Another resistance balance device is a kind of adjustable anti-abrasion form-drag balancer (applicant：Clock
Chinese ancient cooking vessel, inventor：Zhong Bin, Feng is at sincere etc., application number：201320159335.9), which increases the device of similar valve
Part not only increases production cost, while also resulting in tube fluid and Biased flow phenomenon occurs, and aggravates the degree of wear to pipe network,
It carries out also needing to carry out loaded down with trivial details debugging efforts when resistance balance.From above two adjustable resistance balancer it is seen that they not only
There is respective defect, and is required for the debugging efforts of progress resistance balance when carrying out resistance balance.
Invention content
In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a kind of sides adjusting the dust removal by ventilation resistance of ducting
Method, to by different pore size than hole board package obtain resistance balance adjusting resistance balance device, draw the resistance balance device
Coefficient of partial resistance chart of the different pore size than under, to design, construction personnel to refer to.
In order to achieve the above objectives, the present invention is achieved by the following technical programs.
A kind of method adjusting the dust removal by ventilation resistance of ducting of the present invention, resistance is adjusted by adjustable port plate-resistance ballancer
Dynamic balance, according to the Resistance Value of required balance select respective aperture ratio (r/R) hole board package, for different pore size than orifice plate
Plug-in unit carries out zero dimension analogue simulation in the duct, obtains the Resistance Value under each aperture ratio, and then local resistance is calculated
Coefficient, and draw a diagram, it is referred to for designer.
Above-mentioned adjustable port plate-resistance ballancer, including short tube, hole board package, flange I, flange II；The two of the short tube
End is provided with flange II and is connected with dust removal by ventilation pipeline, the flange I that middle setting is attached with hole board package；It is described short
1/2 opening is only opened on pipe top makes hole board package be inserted into, and keeps hole board package close with it in the upper opening portion of short tube setting flange I
It is connected and ensures air-tightness；The hole board package is the hickey of connecting flange I similar to annulus, top, and lower part can be in direct contact
Internal diameter to duct bottom, short tube is equal with the outer diameter of hole board package.
Further, hole board package (1) aperture ratio (r/R) ranging from 0.70~0.92.
Above-mentioned resistance balance device using different pore size than hole board package carry out resistance balance adjusting, hole board package is similar
Annulus, the outstanding part of plug-in unit are connected with short tube middle opening flange, and hole board package outer diameter is equal with minor tube inner diameter, hole
Board package is coaxially arranged with short tube.After plug-in unit is inserted into short tube, circular local resistance pipe fitting, the resistance tube are formed in short tube
The mode that part increases local resistance is sudden contraction and sudden expansion, and increasing inhibition effect is apparent, while because short tube and orifice plate are coaxially arranged so stream
Biased flow phenomenon will not occur for body.Using CFD (computational fluid dynamics) software carry out analogue simulation, to different pore size than hole
Board package is simulated, and the range of resistance adjusted in pipe network according to most of resistance balance device lists analog result and is distributed in this
The aperture ratio orifice plate of range is calculated by the different pore size listed than the Resistance Value under orifice plate, obtains different pore size than under
Coefficient of partial resistance (here can to the aperture ratio within the scope of this carry out equal difference subdivision simulation), to different pore size than local resistance
Coefficient is drawn a diagram, lookup and reference when so the resistance balance device after convenience is designed or used.
Using technical solution provided by the invention, compared with conventionally known technology, there is following remarkable result：
1, the design of traditional resistance balance device be the size of internal diameter is calculated according to the Resistance Value of required balance, and this
Invention is carried out to orifice plate of the different pore size than under that import wind speed is 15m/s in such a way that CFD software carries out analogue simulation
Analogue simulation (the minimum wind speed in most of dedusting pipe network is in 15m/s or so), arranges result caused by simulation, can
Different pore size intuitively is observed than lower generated local resistance, while also can be by formula(in formula, Δ P is
Resistance difference at sys node, Pa；ζ is coefficient of partial resistance；ρ is fluid density, kg/m3；V is resistance balance device branch pipeline section
Fluid flow rate, m/s) the anti-coefficient of partial resistance ζ released under the aperture ratio, it is directed to different wind speed later because of its coefficient of partial resistance
It is constant, it still can be used for calculating the local resistance under different wind speed.So ginseng is brought to selection of the designer on the board package of hole
It examines, is conveniently operated.
2, compared with traditional resistance balance device, the resistance for the resistance balance device that the present invention designs can be according to specific resistance of pipe system
The change of value, replace different pore size than hole board package so that pipe network is reached resistance balance again.With adjustable wear-resisting resistance balance
Device is compared, and resistance balance device structure of the invention is more simple and direct, and replacement orifice plate is more convenient, and few air-tightness is open on short tube more
It is good, without on resistance balance device trepanning installation pressure measurement short tube carry out drag measurement, can be directly according to being drawn in above-mentioned 1
The correlation graph of each aperture ratio is carried out with reference to the corresponding orifice plate of selection.The present invention is balanced with a kind of adjustable anti-abrasion form-drag simultaneously
Device is compared, and resistance balance device of the invention is simple in structure, without increasing the device of similar valve, reduces production cost, in pipe not
There are Biased flow phenomenons, can reduce the degree of wear to pipe network, when carrying out resistance balance without the debugging efforts that progress is loaded down with trivial details.
3, the entire resistance balance device that the present invention designs is simple and compact for structure, of low cost, is only needed to change when adjusting resistance
Hole board package, relative to entire resistance balance device is replaced, it is huge, while hole only to replace hole board package and bring economic benefit
The production and installation of plate are also efficient and convenient.
Description of the drawings
Fig. 1 is the overall schematic for the adjustable port plate-resistance ballancer that the present invention designs.
Fig. 2 is the main cross section structure diagram for the adjustable port plate-resistance ballancer that the present invention designs.
Fig. 3 is Section A-A structural schematic diagram in Fig. 2.
Fig. 4 is coefficient of partial resistance linear graph of the different pore size than hole board package；
As seen from the figure, abscissa is aperture ratio, and for aperture ratio from 0.70 to 0.92, a point is arranged in intermediate often increase by 0.20,
Ordinate is coefficient of partial resistance.
Figure label：1, hole board package；2, short tube；3, flange I；4, flange II.
Specific implementation mode
It is detailed to the present invention below with reference to attached drawing and specific embodiment in order to specifically understand present disclosure
Description, but the present invention is not limited to following embodiments.
As shown in Figure 1, Figure 2, Figure 3 shows, the adjustable port plate-resistance ballancer that the present invention designs is removed including connection ventilation
The short tube 2 of dirt pipe network, the hole board package 1 adjusted for resistance balance.Open 1/2 opening, and opening width and orifice plate in 2 top of short tube
Width is in the same size, is used for the insertion of hole board package 1.And the part that different aperture ratios hole board package is caused in pipe network
Resistance is different, thus can when resistance of pipe system is balanced using different pore size than hole board package be adjusted.Used here as
CFD to different pore size than hole board package carry out analogue simulation, by using different pore size than hole board package in pipeline into
Row simulation is found, when import wind speed is 15m/s, the range of aperture ratio is most of resistance balance device resistance in 0.70-0.92
The range of dynamic balance, tens to hundreds of Pa.When it is implemented, with tolerance be 0.02 pair of aperture ratio be 0.70-0.92 carry out equal difference
Ordered series of numbers be distributed, respectively to different pore size than hole board package simulate, obtain different pore size than hole board package in the duct
Generated local resistance value.The coefficient of partial resistance under each aperture ratio is calculated according to local resistance value simultaneously, such as table 1
It is shown.
In the implementation case, because the short tube only first half separates 1/2 opening, it is only necessary to by upper half for hole board package 1 and short tube 2
Portion connects.And it is all R that the internal diameter of short tube 2 is equal with 1 outer diameter of hole board package, to ensure the coaxial of hole board package 1 and short tube 2
Arrangement, avoids the Biased flow phenomenon of tube fluid.
In the implementation case, short tube 2 is provided at both ends with the flange II 4 being connect with dust removal by ventilation pipe network, middle setting
There is the flange I 3 being attached with hole board package 1.
Coefficient of partial resistance of 1 different pore size of table than hole board package
Claims (2)
1. a kind of method adjusting the dust removal by ventilation resistance of ducting, which is characterized in that adjusted by adjustable port plate-resistance ballancer
Save resistance balance, according to the Resistance Value of required balance select respective aperture than hole board package (1), for different pore size than hole
Board package (1) carries out zero dimension analogue simulation in the duct, obtains the Resistance Value under each aperture ratio, and then part is calculated
Resistance coefficient, and draw a diagram, it is referred to for designer；
The adjustable port plate-resistance ballancer, including short tube (2), hole board package (1), flange I (3), flange II (4)；
The flange II (4) that is provided at both ends with of the short tube (2) is connected with dust removal by ventilation pipeline, middle setting and hole board package
(1) flange I (3) being attached；
1/2 opening is only opened on short tube (2) top makes hole board package (1) be inserted into, and flange is arranged in the upper opening portion of short tube (2)
I (3) make hole board package (1) and its closely coupled guarantee air-tightness；
The similar annulus of the hole board package (1), top is the hickey of connecting flange I (3), and lower part can directly contact pipeline
The internal diameter of bottom, short tube (2) is equal with the outer diameter of hole board package (1).
2. the method for adjusting the dust removal by ventilation resistance of ducting as described in claim 1, which is characterized in that the hole board package (1)
Aperture ratio ranging from 0.70~0.92.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810131846.7A CN108386647A (en) | 2018-02-09 | 2018-02-09 | A method of adjusting the dust removal by ventilation resistance of ducting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810131846.7A CN108386647A (en) | 2018-02-09 | 2018-02-09 | A method of adjusting the dust removal by ventilation resistance of ducting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108386647A true CN108386647A (en) | 2018-08-10 |
Family
ID=63075462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810131846.7A Pending CN108386647A (en) | 2018-02-09 | 2018-02-09 | A method of adjusting the dust removal by ventilation resistance of ducting |
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| CN (1) | CN108386647A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2500920Y (en) * | 2001-08-21 | 2002-07-17 | 言树清 | Plate-resistance ballancer |
| CN1373848A (en) * | 1999-09-13 | 2002-10-09 | 罗斯蒙德公司 | Process flow plate with temp. measurement feature |
| CN105829836A (en) * | 2013-09-26 | 2016-08-03 | 保罗·范巴斯科克 | Orifice plates |
| CN206221884U (en) * | 2016-10-19 | 2017-06-06 | 中国核电工程有限公司 | The current-limiting apparatus that a kind of multistage restriction orifice is combined with single-stage restriction orifice |
| CN107327603A (en) * | 2017-06-20 | 2017-11-07 | 武汉科技大学 | A kind of air quantity can dynamic stable regulation dust pelletizing system |
| CN206861118U (en) * | 2017-06-26 | 2018-01-09 | 北京中润宝成工程技术有限公司 | A kind of slip casting cut-off equipment |
-
2018
- 2018-02-09 CN CN201810131846.7A patent/CN108386647A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1373848A (en) * | 1999-09-13 | 2002-10-09 | 罗斯蒙德公司 | Process flow plate with temp. measurement feature |
| CN2500920Y (en) * | 2001-08-21 | 2002-07-17 | 言树清 | Plate-resistance ballancer |
| CN105829836A (en) * | 2013-09-26 | 2016-08-03 | 保罗·范巴斯科克 | Orifice plates |
| CN206221884U (en) * | 2016-10-19 | 2017-06-06 | 中国核电工程有限公司 | The current-limiting apparatus that a kind of multistage restriction orifice is combined with single-stage restriction orifice |
| CN107327603A (en) * | 2017-06-20 | 2017-11-07 | 武汉科技大学 | A kind of air quantity can dynamic stable regulation dust pelletizing system |
| CN206861118U (en) * | 2017-06-26 | 2018-01-09 | 北京中润宝成工程技术有限公司 | A kind of slip casting cut-off equipment |
Non-Patent Citations (1)
| Title |
|---|
| 张勤昭等: "三偏心碟阀的流场合阻力特性研究", 《流体机械》 * |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180810 |
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| RJ01 | Rejection of invention patent application after publication |