CN203417756U - Airflow uniform distribution device suitable for high-concentration dust remover - Google Patents
Airflow uniform distribution device suitable for high-concentration dust remover Download PDFInfo
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- CN203417756U CN203417756U CN201320465777.6U CN201320465777U CN203417756U CN 203417756 U CN203417756 U CN 203417756U CN 201320465777 U CN201320465777 U CN 201320465777U CN 203417756 U CN203417756 U CN 203417756U
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- airflow uniform
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Abstract
The utility model relates to an airflow uniform distribution device suitable for a high-concentration dust remover. The airflow uniform distribution device comprises a bell mouth, wherein a first distribution plate, a second distribution plate and a third distribution plate are mounted in the bell mouth in sequence; a first flow guiding plate is mounted at the upper part of the second distribution plate; a second flow guiding plate is mounted at the lower part of the third distribution plate; the lower parts of the first flow guiding plate and the second flow guiding plate form a swing structure. The airflow uniform distribution device has the benefits that the service life prolonging requirement and the international requirement that the airflow uniform distribution property Sigma is equal to or lower than 0.2 of a high-concentration electric dust collector are be met; compared with the conventional structure of the airflow uniform distribution device, the reliability is improved, both the manufacture and mounting are convenient, and the running time of the high-concentration dust remover is prolonged.
Description
Technical field
The utility model relates to a kind of high density dust removing, relates in particular 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, minimizing day by day along with coal memory space, power plant brings into use to mix burns coal and reduces production costs, so just make dust concentration in flue gas 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 makes airflow uniform distribution device significant in electrostatic precipitator.
The object of airflow uniform distribution device is that flow velocity reaches a relatively equally distributed situation, thereby improves dust-collecting efficiency in order to make smoke gas flow cross deduster when inner.
If air-flow is inhomogeneous, will there is following situation:
The first, the part flue gas that flow velocity is too fast, shortened by the interelectrode processing time, and dust-collecting efficiency will decline.
The second, the part flue gas that flow velocity is too fast, can make the dust of piling up on collection electrode fly upward once again, and dust-collecting efficiency will decline.
The 3rd, the part flue gas that flow velocity is too fast, can make the inner cyclone that produces of ash bucket, causes dust to raise up, and dust-collecting efficiency will decline.
The 4th, the part flue gas that flow velocity is extremely slow is stagnated between electrode, and temperature can decline by a relatively large margin herein, produces dewfall phenomenon, affects efficiency of dust collection.
The 5th, the part flue gas that flow velocity is excessively slow, can cause dust accumulation at import loudspeaker place, affects the discharge of dust.
The 6th, inhomogeneous flow velocity can cause the inhomogeneous accumulation of dust on airflow uniform distribution device, makes the uniform further deterioration of gas flow rate.
The 7th, inhomogeneous 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, by equivalent diameter, calculate, air-flow Reynolds number is at least 10
5above, be high turbulence state, with the shape and structure of existing airflow uniform distribution device (distribution grid 2, deflector 3), although can make airflow uniform distribution reach standard-required to increase the method side of resistance, due to mounting guiding board 3 repeatedly of needs and test.
Summary of the invention
The utility model technical issues that need to address have been to provide a kind of airflow uniform distribution device 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 utility model is achieved through the following technical solutions:
The utility model comprises: horn mouth; In described horn mouth, settle successively the first distribution grid, the second distribution grid and the 3rd distribution grid; The first deflector is settled on top at the second described distribution grid, in the bottom of the 3rd described distribution grid, settles the second deflector; The first described deflector and the bottom of the second deflector are swinging structure.
Compared with prior art, the beneficial effects of the utility model are: can meet the requirement of high-concentration electrostatic precipitator completely, comprise the requirement to airflow uniform distribution σ≤0.2 in the growth in service life and the world.Compare 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 that the F of Fig. 1 is to view.
Fig. 3 is the utility model structural representation.
Fig. 4 is that the F of Fig. 3 is to view.
Fig. 5 is deflector enlarged drawing in Fig. 3.
The specific embodiment
Below in conjunction with accompanying drawing and the specific embodiment, the utility model is described in further detail:
As shown in Fig. 3, Fig. 4, Fig. 5, the utility model comprises: horn mouth 10; In described horn mouth 10, settle successively the first distribution grid 20, the second distribution grid 21 and the 3rd distribution grid 22; On the top of the second described distribution grid 21, settle the first deflector 30, in the bottom of the 3rd described distribution grid 22, settle the second deflector 31; The first described deflector 30 and the bottom of the second deflector 31 are swinging structure 303.
The utility model changes the material of former airflow uniform distribution device (distribution grid 2, deflector 3) common low alloy structural steel (16Mn) of heat resistant and wear resistant into from common straightcarbon steel (Q235).Deflector (30,31) has increased bottom part, and bottom part can swing with air-flow, can effectively to high velocity air, form break up, the effect of water conservancy diversion.
Adopt the utility model, at flue gas, enter after 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 break up local cyclone at a high speed, be directed to the flow region of lower flow velocity, make flue gas when flowing out horn mouth 10, flow velocity becomes can be to steadily, thereby reach the requirement of airflow uniform distribution σ≤0.2.And when the smoke gas flow of high concentration is crossed two deflectors (30,31), two deflectors (30,31) will play the effect of sedimentation, particles contained large dust in flue gas is partly sunk, be collected one step ahead, improve the service efficiency of electric cleaner.
Claims (1)
1. applicable to an airflow uniform distribution device for high density dust removing, comprising: horn mouth; In described horn mouth, settle successively the first distribution grid, the second distribution grid and the 3rd distribution grid; The first deflector is settled on top at the second described distribution grid, in the bottom of the 3rd described distribution grid, settles the second deflector; 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 |
|---|---|---|---|
| CN201320465777.6U CN203417756U (en) | 2013-07-31 | 2013-07-31 | Airflow uniform distribution device suitable for high-concentration dust remover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320465777.6U CN203417756U (en) | 2013-07-31 | 2013-07-31 | Airflow uniform distribution device suitable for high-concentration dust remover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203417756U true CN203417756U (en) | 2014-02-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320465777.6U Expired - Fee Related CN203417756U (en) | 2013-07-31 | 2013-07-31 | Airflow uniform distribution device suitable for high-concentration dust remover |
Country Status (1)
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| CN (1) | CN203417756U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104338612A (en) * | 2013-07-31 | 2015-02-11 | 上海冶金矿山机械厂 | Airflow uniform distribution device applicable to high-concentration dust collector |
-
2013
- 2013-07-31 CN CN201320465777.6U patent/CN203417756U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104338612A (en) * | 2013-07-31 | 2015-02-11 | 上海冶金矿山机械厂 | Airflow uniform distribution device applicable to high-concentration dust collector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140205 Termination date: 20140731 |
|
| EXPY | Termination of patent right or utility model |