CN106076021A - Airflow distribution device in large-scale air flow duct system - Google Patents
Airflow distribution device in large-scale air flow duct system Download PDFInfo
- Publication number
- CN106076021A CN106076021A CN201610672004.3A CN201610672004A CN106076021A CN 106076021 A CN106076021 A CN 106076021A CN 201610672004 A CN201610672004 A CN 201610672004A CN 106076021 A CN106076021 A CN 106076021A
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- China
- Prior art keywords
- flow
- airflow
- air flow
- distribution
- duct system
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/36—Controlling flow of gases or vapour
- B03C3/361—Controlling flow of gases or vapour by static mechanical means, e.g. deflector
- B03C3/363—Controlling flow of gases or vapour by static mechanical means, e.g. deflector located before the filter
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Air-Flow Control Members (AREA)
Abstract
A kind of airflow distribution device in large-scale air flow duct system, it comprises the some airflow-distribution boards arranged at a certain distance, feature is, this airflow-distribution board is respectively arranged with several flow openings by certain position distribution, uses line, the perforate mode of the integration of departments and regions at different levels to arrange；Flow openings lee side in air flow method edges of boards wall region part is provided with deflection flow apron；Flow openings lee side in airflow-distribution board central area part is provided with vertical choked flow baffle plate；The adjacent flow openings on airflow-distribution board is dislocatedly distributed.The present invention have effectively achieved the uniform diffusion profile of air-flow of tapered pipeline so that the outlet air flow velocity of reducing pipeline section becomes uniform, improves purification efficiency, improves cleaning equipment working condition.
Description
Technical field
The present invention relates to a kind of airflow distribution device, particularly relate to the reducing pipeline section gas in a kind of large-scale air flow duct system
Stream uniform distribution device.
Background technology
On electric cleaner working section, the inhomogeneities of VELOCITY DISTRIBUTION will affect the purification efficiency to flue dust, and usual speed is divided
Cloth is the most uneven, and its purification efficiency just declines the most.
It is the most all to be transitioned into big cross section from having light-gauge ventilation duct that air-flow is introduced electric precipitation or sack cleaner
Operating room, if do not taken the necessary measures, the uneven of air flow method will be affected.
The distribution of Large-sized Electrostatic Precipitator and sack cleaner inlet air flow affects the biggest for the purifying property of equipment.Generally
In the case of, due to the restriction of installing space etc., the ratio of the size open area of the reducing pipeline section of the inlet air flow of this kind equipment up to
6-10 times, and the length of pipeline section only has less than 3m, subtended angle is up to 60-70 degree, causes reducing pipeline section air velocity widely different.With
Time heavy caliber passage in, air-flow just shows strong turbulent condition when relatively low flow rate regime, more exacerbates and causes air-flow
The inhomogeneities in flow field.
The version of airflow-distribution board is more, including panel formula, porous type, vertical plates, sawtooth pattern, X-type at present
Plate and vertical folded plate type etc..Wherein vertical plates, vertical folded plate type are mainly used in the tubing of enterprising QI KOU.For center
The air inlet reducer pipe of air inlet, at present be most widely porous plate even distribution device, as it is shown in figure 1, the air flow method of this device
What plate 101 ' was average is provided with the flow openings 102 ' that several sizes are identical, owing to depressed structure is the simplest, although easily make
Make production, but during actual use, for the occasion of some central inlet pipeline very irregulars, the effect of current-sharing is very
Bad.
Summary of the invention
The present invention provides the airflow distribution device in a kind of large-scale air flow duct system, its can adjust Large-sized Electrostatic Precipitator,
The flow velocity of sack cleaner inlet air flow, makes air flow method uniform, improves flue dust ground purification efficiency, improves working conditions.
For reaching above-mentioned purpose, the present invention provides the airflow distribution device in a kind of large-scale air flow duct system, and it comprises
The some airflow-distribution boards arranged at a certain distance, this airflow-distribution board are respectively arranged with several by certain position distribution
Flow openings；Feature is, described flow openings its use line, the perforate mode of the integration of departments and regions at different levels is arranged, can controlled vortex flow yardstick,
Eliminate the jet effect of air-flow；
Flow openings lee side in air flow method edges of boards wall region part is provided with deflection flow apron, and it is along angle of flare
Direction tilts, tilt adjustable；The length of this deflection flow apron changes along height and the width of pipeline；
Flow openings lee side in airflow-distribution board central area part is provided with vertical choked flow baffle plate, each gas of scalable
The percent opening of stream perforate and corresponding resistance coefficient；
The bottom of airflow-distribution board is provided with airflow scouring automatic ash removing device；
The described flow openings on adjacent two airflow-distribution boards is dislocatedly distributed, and prevents jet short circuit.
Airflow distribution device in the large-scale air flow duct system that the present invention provides, have effectively achieved the gas of tapered pipeline
Flow uniform diffusion profile so that the outlet air flow velocity of reducing pipeline section becomes uniform, to meet the optimum gas needed for apparatus and process
Flow distribution state.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing reducing pipeline section air-flow uniform distribution device；
Fig. 2 is the structural representation of the airflow distribution device in the large-scale air flow duct system that the present invention provides.
Detailed description of the invention
Below according to Fig. 2, a kind of preferred forms of the present invention is described.
As in figure 2 it is shown, the structural representation provided for the present invention；It comprises 2 pieces of air flow method arranged at a certain distance
Plate 101 and 102, at these 2 pieces of airflow-distribution boards 101, is respectively arranged with several flow openings by certain position distribution on 102
103；
Lee side in the flow openings 103 of the Bian Bi region part of the airflow-distribution board 101 being in anemostat front end sets
Being equipped with deflection flow apron 104, it tilts along angle of flare direction,；The length of this deflection flow apron 104 along pipeline height and
Width changes；
Described deflection flow apron 104 can effectively guide air-flow along the more uniform diffusion profile of anemostat, due to respectively
Individual deflection flow apron 104 different in size, it the most also has certain effect eliminating air flow swirl；
Lee side in the flow openings 103 of the central area part of the airflow-distribution board 101 being in anemostat front end sets
It is equipped with vertical choked flow baffle plate 105；
The percent opening of the described vertical choked flow baffle plate 105 each flow openings of scalable 103, thus regulate each flow openings
The resistance coefficient of 103；Typically, the percent opening of the flow openings 103 being in airflow-distribution board 101 mid portion is little, is in air-flow
The percent opening of the flow openings 103 of distribution grid 101 limit wall part is big；
Flow openings on the described airflow-distribution board 102 being in anemostat rear end 103 is line, the opening of the integration of departments and regions at different levels
Hole；So can efficiently reduce bore size, and can controlled vortex flow yardstick, eliminate the jet effect of air-flow；
It is provided with airflow scouring automatic ash removing device 106 in the bottom of 2 pieces of airflow-distribution boards 101,102；
2 pieces of described airflow-distribution board overdraught perforates 103 are dislocatedly distributed, and prevent jet short circuit.
Below according to a specific embodiment, the using effect of the present invention it is better described:
An existing electric cleaner, owing to equipment entrance steric requirements is the narrowest, pipeline cannot be by more satisfactory mode cloth
Putting, anemostat subtended angle is more than 60 degree, and the air flow method situation causing electric field inlet section is the most undesirable, equal by the air-flow of China
Even property index K is counted, and the uniformity test result in debugging stage shows that K has reached about 40%；By implementing the present invention, K value can
Being reduced to less than 30%, smoke discharge amount reduces more than 10%.
Claims (5)
1. the airflow distribution device in large-scale air flow duct system, it comprises the some air flow method arranged at a certain distance
Plate, this airflow-distribution board is respectively arranged with several flow openings by certain position distribution；It is characterised by,
Described flow openings uses line, the perforate mode of the integration of departments and regions at different levels to arrange；
Flow openings lee side in described air flow method edges of boards wall region part is provided with deflection flow apron；
Flow openings lee side in described airflow-distribution board central area part is provided with vertical choked flow baffle plate.
Airflow distribution device in large-scale air flow duct system the most as claimed in claim 1, it is characterised in that described deflection
Flow apron tilts along angle of flare direction, tilt adjustable.
Airflow distribution device in large-scale air flow duct system the most as claimed in claim 2, it is characterised in that described deflection
Flow apron length changes along height and the width of pipeline.
Airflow distribution device in large-scale air flow duct system the most as claimed in claim 1, it is characterised in that at described gas
The bottom of flow point fabric swatch is additionally provided with airflow scouring automatic ash removing device.
Airflow distribution device in large-scale air flow duct system the most as claimed in claim 1, it is characterised in that described is adjacent
Flow openings on airflow-distribution board is dislocatedly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610672004.3A CN106076021A (en) | 2016-08-13 | 2016-08-13 | Airflow distribution device in large-scale air flow duct system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610672004.3A CN106076021A (en) | 2016-08-13 | 2016-08-13 | Airflow distribution device in large-scale air flow duct system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106076021A true CN106076021A (en) | 2016-11-09 |
Family
ID=58069636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610672004.3A Pending CN106076021A (en) | 2016-08-13 | 2016-08-13 | Airflow distribution device in large-scale air flow duct system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106076021A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107042046A (en) * | 2017-02-09 | 2017-08-15 | 河北宏达环境工程有限公司 | A kind of airflow distribution device of electrostatic fabric filter |
| CN108568166A (en) * | 2018-07-09 | 2018-09-25 | 福建南方路面机械有限公司 | A kind of dust remover side air-intake device and bag filter |
-
2016
- 2016-08-13 CN CN201610672004.3A patent/CN106076021A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107042046A (en) * | 2017-02-09 | 2017-08-15 | 河北宏达环境工程有限公司 | A kind of airflow distribution device of electrostatic fabric filter |
| CN107042046B (en) * | 2017-02-09 | 2024-04-05 | 河北宏达环境工程有限公司 | Air flow distribution device of electric bag dust collector |
| CN108568166A (en) * | 2018-07-09 | 2018-09-25 | 福建南方路面机械有限公司 | A kind of dust remover side air-intake device and bag filter |
| CN108568166B (en) * | 2018-07-09 | 2023-06-23 | 福建南方路面机械股份有限公司 | Side air inlet device of dust remover and cloth bag dust remover |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161109 |
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| WD01 | Invention patent application deemed withdrawn after publication |