CN104338612A - Airflow uniform distribution device applicable to high-concentration dust collector - Google Patents
Airflow uniform distribution device applicable to high-concentration dust collector Download PDFInfo
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- CN104338612A CN104338612A CN201310330553.9A CN201310330553A CN104338612A CN 104338612 A CN104338612 A CN 104338612A CN 201310330553 A CN201310330553 A CN 201310330553A CN 104338612 A CN104338612 A CN 104338612A
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- uniform distribution
- airflow uniform
- distribution device
- dust collector
- flow guide
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Abstract
The invention relates to an airflow uniform distribution device applicable to a high-concentration dust collector. The airflow uniform distribution device comprises a horn mouth; a first distribution plate, a second distribution plate and a third distribution plate are sequentially arranged in the horn mouth; first flow guide plates are arranged on the upper portion of the second distribution plate; second flow guide plates are arranged on the lower portion of the third distribution plate; the lower portions of the first flow guide plates and the lower portions of the second flow guide plates are of swing structures. The airflow uniform distribution device has the beneficial effects that the requirements of the high-concentration dust collector can be completely met, and the requirements comprise prolonging of the service life and the international airflow uniform distribution sigma smaller than or equal to 0.2. Compared with a conventional airflow uniform distribution device, the reliability of the airflow uniform distribution device is improved, manufacturing and mounting are convenient, and the running time of the device is prolonged.
Description
Technical field
The present invention relates to a kind of high density dust removing, particularly relate to airflow uniform distribution device in this high density dust removing.
Background technology
In producing with regard to International Power, coal fired power generation is occupied an leading position.And coal is a kind of non-renewable resources, along with the minimizing day by day of coal memory space, power plant brings into use to mix burns coal to reduce production cost, dust concentration in flue gas is so just made to increase, form the flue gas of high concentration, and increasing again and again that international community's middle and high concentration low emission now requires, make airflow uniform distribution device significant in electrostatic precipitator.
When the object of airflow uniform distribution device is to make flue gas flow through deduster inside, flow velocity reaches the situation of a relatively uniform distribution, thus improves dust-collecting efficiency.
If air-flow is uneven, following situation will be there is:
The first, the part flue gas that flow velocity is too fast, shortened by the interelectrode processing time, dust-collecting efficiency will decline.
The second, the part flue gas that flow velocity is too fast, the dust that collection electrode is piled up can be made to fly upward once again, and dust-collecting efficiency will decline.
3rd, the part flue gas that flow velocity is too fast, ash bucket inside can be made to produce cyclone, and cause dust to raise up, dust-collecting efficiency will decline.
4th, the part flue gas that flow velocity is extremely slow, stagnate between electrode, temperature can decline by a relatively large margin herein, produces dew condensation phenomenon, affects efficiency of dust collection.
5th, the part flue gas that flow velocity is excessively slow, can cause dust accumulation at import loudspeaker place, affect the discharge of dust.
6th, uneven flow velocity, the accumulation that can dust be caused on airflow uniform distribution device uneven, makes the uniform further deterioration of gas flow rate.
7th, uneven flow velocity, can make the flue gas of high concentration, airflow uniform distribution device is caused to the serious wear in some areas, makes the uniform further deterioration of gas flow rate.
As shown in Figure 1 and Figure 2, when air-flow entered horn mouth 1, because flue gas flow rate reaches 11 ~ 16m/s, calculate by equivalent diameter, air-flow Reynolds number is at least 10
5above, in high turbulence state, with the shape and structure of existing airflow uniform distribution device (distribution grid 2, deflector 3), although airflow uniform distribution can be made to reach standard-required with the method side increasing resistance, owing to needing mounting guiding board 3 repeatedly and testing.
Summary of the invention
The technical issues that need to address of the present invention there is provided a kind of airflow uniform distribution device being applicable to high density dust removing, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
The present invention includes: horn mouth; The first distribution grid, the second distribution grid and the 3rd distribution grid is settled successively in described horn mouth; Settle the first deflector on the top of the second described distribution grid, settle the second deflector in the bottom of the 3rd described distribution grid; The first described deflector and the bottom of the second deflector are swinging structure.
Compared with prior art, the invention has the beneficial effects as follows: the requirement that can meet high-concentration electrostatic precipitator completely, comprise the requirement to airflow uniform distribution σ≤0.2 in the growth in service life and the world.Compared with airflow uniform distribution device structure in the past, its reliability increases, and makes and installs all for convenience, extension device running time.
Accompanying drawing explanation
Fig. 1 is airflow uniform distribution device structural representation of the prior art.
Fig. 2 is the F direction view of Fig. 1.
Fig. 3 is structural representation of the present invention.
Fig. 4 is the F direction view of Fig. 3.
Fig. 5 is deflector enlarged drawing in Fig. 3.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail:
As shown in Fig. 3, Fig. 4, Fig. 5, the present invention includes: horn mouth 10; The first distribution grid 20, second distribution grid 21 and the 3rd distribution grid 22 is settled successively in described horn mouth 10; Settle the first deflector 30 on the top of the second described distribution grid 21, settle the second deflector 31 in the bottom of the 3rd described distribution grid 22; The first described deflector 30 and the bottom of the second deflector 31 are swinging structure 303.
The material of former airflow uniform distribution device (distribution grid 2, deflector 3) is changed into the common low alloy structural steel (16Mn) of heat resistant and wear resistant by the present invention from common straightcarbon steel (Q235).Deflector (30,31) adds bottom part, and bottom part can swing with air-flow, can effectively be formed high velocity air break up, the effect of water conservancy diversion.
Adopt the present invention, after flue gas enters horn mouth 10, when the flue gas of high flow rate entered second and third distribution grid (21,22), two deflectors (30,31) can swing with flow velocity, effectively breaing up local cyclone at a high speed, be directed to the flow region compared with low flow velocity, making flue gas when flowing out horn mouth 10, flow velocity becomes and to steadily, thus can reach the requirement of airflow uniform distribution σ≤0.2.And when the flue gas of high concentration flows through two deflectors (30,31), two deflectors (30,31) will play the effect of sedimentation, particles contained large dust fractions in flue gas is sunk, is collected one step ahead, improves the service efficiency of electric cleaner.
Claims (1)
1. be applicable to an airflow uniform distribution device for high density dust removing, comprise: horn mouth; The first distribution grid, the second distribution grid and the 3rd distribution grid is settled successively in described horn mouth; Settle the first deflector on the top of the second described distribution grid, settle the second deflector in the bottom of the 3rd described distribution grid; It is characterized in that: the first described deflector and the bottom of the second deflector are swinging structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310330553.9A CN104338612A (en) | 2013-07-31 | 2013-07-31 | Airflow uniform distribution device applicable to high-concentration dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310330553.9A CN104338612A (en) | 2013-07-31 | 2013-07-31 | Airflow uniform distribution device applicable to high-concentration dust collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104338612A true CN104338612A (en) | 2015-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310330553.9A Pending CN104338612A (en) | 2013-07-31 | 2013-07-31 | Airflow uniform distribution device applicable to high-concentration dust collector |
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| CN (1) | CN104338612A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583048A (en) * | 2016-12-27 | 2017-04-26 | 西北工业大学 | Sawtooth tail edge structure for electric dust remover airflow distribution boards |
| CN108745646A (en) * | 2018-06-04 | 2018-11-06 | 广东电网有限责任公司 | A kind of electric precipitator and its airflow uniform distribution device |
| CN110090495A (en) * | 2019-06-13 | 2019-08-06 | 福建龙净环保股份有限公司 | A kind of cleaner |
| CN110813536A (en) * | 2019-11-22 | 2020-02-21 | 盐城工学院 | Turbulent strong-current dust removal device with high dust capture rate |
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| CN2813105Y (en) * | 2005-09-09 | 2006-09-06 | 王澍 | Flow-choking and guiding air flow distributing device for electric dust cleaner |
| CN1915474A (en) * | 2005-11-15 | 2007-02-21 | 江苏宇达电站辅机阀门制造有限公司 | Method for adjusting airflow distribution of electricity and fabric combined dust catcher, and equipment |
| CN201755526U (en) * | 2010-08-09 | 2011-03-09 | 上海冶金矿山机械厂 | High-concentration electric dust removing device |
| CN102416362A (en) * | 2011-12-16 | 2012-04-18 | 江苏科行环境工程技术有限公司 | Air flow uniform distribution device for electric dust remover |
| CN202199425U (en) * | 2011-08-02 | 2012-04-25 | 北票市波迪机械制造有限公司 | Combined guide plates for air flow distribution at inlet of electric deduster |
| CN203417756U (en) * | 2013-07-31 | 2014-02-05 | 上海冶金矿山机械厂 | Airflow uniform distribution device suitable for high-concentration dust remover |
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2013
- 2013-07-31 CN CN201310330553.9A patent/CN104338612A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2813105Y (en) * | 2005-09-09 | 2006-09-06 | 王澍 | Flow-choking and guiding air flow distributing device for electric dust cleaner |
| CN1915474A (en) * | 2005-11-15 | 2007-02-21 | 江苏宇达电站辅机阀门制造有限公司 | Method for adjusting airflow distribution of electricity and fabric combined dust catcher, and equipment |
| CN201755526U (en) * | 2010-08-09 | 2011-03-09 | 上海冶金矿山机械厂 | High-concentration electric dust removing device |
| CN202199425U (en) * | 2011-08-02 | 2012-04-25 | 北票市波迪机械制造有限公司 | Combined guide plates for air flow distribution at inlet of electric deduster |
| CN102416362A (en) * | 2011-12-16 | 2012-04-18 | 江苏科行环境工程技术有限公司 | Air flow uniform distribution device for electric dust remover |
| CN203417756U (en) * | 2013-07-31 | 2014-02-05 | 上海冶金矿山机械厂 | Airflow uniform distribution device suitable for high-concentration dust remover |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583048A (en) * | 2016-12-27 | 2017-04-26 | 西北工业大学 | Sawtooth tail edge structure for electric dust remover airflow distribution boards |
| CN108745646A (en) * | 2018-06-04 | 2018-11-06 | 广东电网有限责任公司 | A kind of electric precipitator and its airflow uniform distribution device |
| CN110090495A (en) * | 2019-06-13 | 2019-08-06 | 福建龙净环保股份有限公司 | A kind of cleaner |
| CN110813536A (en) * | 2019-11-22 | 2020-02-21 | 盐城工学院 | Turbulent strong-current dust removal device with high dust capture rate |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150211 |