阅读说明：本技术 一种用于除尘器的粉尘分配装置 (Dust distribution device for dust remover ) 是由 石磊 董陈 王晓冰 尚桐 肖星 南蛟 杨世极 袁壮 于 2021-08-17 设计创作，主要内容包括：本发明提供一种用于除尘器的粉尘分配装置,能够均匀分配输送至各个除尘器仓室的烟气及其中的粉尘含量,保证除尘器的稳定运行,提高除尘效率。包括分配器,N个并联烟道和N个连接管,其中N为除尘器仓室数量；并联烟道的进气端与分配器的出气端连接,并联烟道的出气端通过连接管与除尘器的各个仓室一一对应连接；分配器内设置有N-1个分隔板,沿分配器宽度方向呈间隔均匀布置,并与分配器的侧板平行。(The invention provides a dust distribution device for dust collectors, which can uniformly distribute flue gas conveyed to each dust collector bin and dust content in the flue gas, ensure stable operation of the dust collectors and improve dust collection efficiency. The device comprises a distributor, N parallel flues and N connecting pipes, wherein N is the number of dust remover bins; the air inlet end of the parallel flue is connected with the air outlet end of the distributor, and the air outlet end of the parallel flue is correspondingly connected with each chamber of the dust remover one by one through a connecting pipe; n-1 partition plates are arranged in the distributor, are uniformly arranged at intervals along the width direction of the distributor and are parallel to the side plates of the distributor.)

1. A dust distribution device for a dust remover is characterized by comprising a distributor (1), N parallel flues (2) and N connecting pipes (4), wherein N is the number of chambers of the dust remover;

the air inlet end of the parallel flue (2) is connected with the air outlet end of the distributor (1), and the air outlet end of the parallel flue (2) is correspondingly connected with each chamber of the dust remover (5) through a connecting pipe (4);

n-1 partition plates (7) are arranged in the distributor (1), are uniformly arranged at intervals along the width direction of the distributor (1), and are parallel to the side plates of the distributor (1).

2. A dust distribution device for a dust separator according to claim 1, wherein the outlet end of the parallel flue (2) and the inlet end of the connecting pipe (4) are provided with manual flow regulating devices (3).

3. A dust distribution device for a precipitator according to claim 1, c h a r a c t e r i z e d in that the bend section of the parallel flue 2 is provided with a deflector 6, the shape of which conforms to the contour of the bend and is parallel to the bend.

4. A dust distribution device for a precipitator according to claim 1, c h a r a c t e r i z e d in that the distributor (1) is connected to the parallel flues (2) by means of a square pitch (8).

5. A dust distribution device for dust collectors according to claim 4, wherein the square burls (8) are provided at the lower end of the distributor (1).

6. A dust distributing device for dust collector as claimed in claim 1, wherein a flow rate measuring means and a dust amount measuring means are provided in said parallel flue.

7. A dust distribution device for dust collectors according to claim 1, wherein the lower base plate (9) of the distributor (1) is inclined upward in the flow direction of the flue gas.

8. The dust distribution device for the dust remover according to claim 1, wherein the height of the distributor (1) is arranged to be variable from large to small along the flow direction of the flue gas, and the width is arranged to be variable from small to large along the flow direction of the flue gas.

9. A dust distribution device for a precipitator according to claim 1, wherein the outlet end of the parallel flue (2) is arranged along the central axis of the chamber of the precipitator (5).

Technical Field

The invention belongs to the field of boiler dust removal, and particularly relates to a dust distribution device for a dust remover.

Background

Modern large-scale thermal power plant's capacity is high, and the afterbody volume of fume is big, and a plurality of storehouses are usually designed to the electrostatic precipitator device for dust particle desorption. Because the flues merged into each chamber are difficult to be completely and symmetrically distributed, the flue gas flow and the fly ash content distribution among electric fields in each chamber have differences, and the differences have great influence on the stable operation of the dust remover:

(1) when the airflow disturbance deviates from the design value, the smoke energy distribution is obviously changed by the airflow disturbance, so that the dust removal performance is reduced;

(2) when the ash amount of a certain bin is large, the ash conveying system is caused to operate in an overload mode, the material level of an ash hopper is raised, and the problems of pipe blockage and ash conveying unsmooth are caused;

(3) between the bin electric fields, the ash amount distribution deviation is usually accompanied with the deviation of the particle size distribution, and the deviation of the particle size distribution has great influence on the characteristics of ash particle specific resistance, temperature reduction agglomeration and the like, thereby influencing the dust removal efficiency.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a dust distribution device for dust collectors, which can uniformly distribute flue gas conveyed to each dust collector bin and dust content in the flue gas, ensure stable operation of the dust collectors and improve dust collection efficiency.

In order to achieve the purpose, the invention provides the following technical scheme:

a dust distribution device for a dust remover comprises a distributor, N parallel flues and N connecting pipes, wherein N is the number of dust remover bins;

the air inlet end of the parallel flue is connected with the air outlet end of the distributor, and the air outlet end of the parallel flue is correspondingly connected with each chamber of the dust remover one by one through a connecting pipe;

n-1 partition plates are arranged in the distributor, are uniformly arranged at intervals along the width direction of the distributor and are parallel to the side plates of the distributor.

Preferably, the gas outlet end of the parallel flue and the gas inlet end of the connecting pipe are both provided with a manual flow adjusting device.

Preferably, the bend part of the parallel flue is provided with a guide plate, and the shape of the guide plate is consistent with the contour of the bend and is parallel to the bend.

Preferably, the distributor and the parallel flue are connected through a square and round joint.

Preferably, the square-round segment is disposed at a lower end of the distributor.

Preferably, a flow velocity measuring device and a dust amount measuring device are arranged in the parallel flue.

Preferably, the lower bottom plate of the distributor is arranged obliquely upwards along the flowing direction of the smoke.

Preferably, the height of the distributor is arranged along the flow direction of the flue gas in a diameter-changing manner from large to small, and the width of the distributor is arranged along the flow direction of the flue gas in a diameter-changing manner from small to large.

Preferably, the gas outlet end of the parallel flue is arranged along the central axis of the dust collector bin.

Compared with the prior art, the invention has the following beneficial effects:

the invention provides a dust distribution device for a dust remover, which is characterized in that a distributor is arranged at the upstream of the air inlet end of the dust remover, and the smoke is uniformly divided into a plurality of strands of smoke by a partition plate arranged in the distributor. The number of the dust remover bins is N, the number of the partition plates is N-1, the purpose is to enable the flow rate of flue gas distributed in each bin of the dust remover to be uniform, the influence of uneven distribution on dust removal efficiency is avoided, the partition plates and the distributor side plates are arranged in parallel, the flow path of the flue gas and dust in the flue gas can be optimized as far as possible, and the flow resistance is reduced. The uniform flue gas is connected with parallel flues which are in one-to-one correspondence with the dust remover through connecting pipes and is respectively conveyed into each chamber of the dust remover for dust removal, thereby achieving the purpose of adjusting the flow of the flue gas entering each chamber of the dust remover. The uniform distribution of the flue gas volume is the premise of uniform distribution of dust, so that the uniform distribution of the flue gas volume and the dust content in the flue gas in each chamber is realized by adjusting the uniform distribution of the flue gas volume, and the problems of pipe blockage and unsmooth dust conveying caused by overload operation of a dust removal system and material level rise of an ash hopper due to excessive flue gas conveying in a certain chamber and large ash volume are avoided, thereby improving the dust removal efficiency.

Further, the lower plate of distributor upwards inclines upward and sets up, and the lower extreme of distributor is provided with the square and round section, is favorable to the circulation of large granule dust, and this is that the deviation that avoids particle size distribution leads to the dust volume to distribute and appears the deviation. In addition, the deviation of the particle size distribution has great influence on the specific resistance of the dust particles, the temperature reduction agglomeration and other characteristics, and the dust removal efficiency is influenced. In addition, the large-particle dust smoothly circulates in each parallel flue, which is the key for uniformly distributing the dust, the lower bottom plate of the distributor is arranged at a certain inclination angle, and the lower end of the distributor is provided with a square round joint, so that the flow resistance of the large-particle dust can be reduced as much as possible, and the uniform distribution of the dust is favorably realized.

Furthermore, a manual flow adjusting device is arranged at the air outlet end of the parallel flue, and aims to adjust the resistance of each parallel branch, so that the flue gas flow in each branch is adjusted and uniformly distributed into each chamber of the dust remover.

Furthermore, the guide plate is arranged at the curve part of the parallel flue, the shape of the guide plate is consistent with the profile of the curve and is parallel to the curve, the flow path of the flue gas and the dust particles in the flue gas can be optimized, and the newly increased resistance of the flue gas is reduced as much as possible.

Furthermore, the number of the parallel flue is the same as that of the dust remover bins, so that the flue gas is uniformly divided into corresponding strands, and the uniform distribution of the flow of the flue gas entering each bin of the dust remover is ensured.

Drawings

FIG. 1 is a schematic view of a flue dust uniform distribution device of a dust collector in embodiment 1;

FIG. 2 is a schematic view of a flue dust uniform distribution device of a dust collector in the embodiment 2;

FIG. 3 is a schematic view of a flue dust uniform distribution device of a dust collector in the embodiment 3;

FIG. 4 is a schematic view of a flue dust uniform distribution device of a dust collector in the embodiment 4.

In the figure, a distributor 1, a parallel flue 2, a manual flow adjusting device 3, a connecting pipe 4, a dust remover 5, a guide plate 6, a partition plate 7, a square and round joint 8 and a lower bottom plate 9.

Detailed Description

The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.

The invention provides a dust distribution device for a dust remover, which comprises a distributor 1, N parallel flues 2 and N connecting pipes 4, wherein N is the number of chambers of the dust remover; the air inlet end of the parallel flue 2 is connected with the air outlet end of the distributor 1, and the air outlet end of the parallel flue 2 is correspondingly connected with each chamber of the dust remover 1 through a connecting pipe 4; n-1 partition plates 7 are arranged in the distributor 1, are uniformly arranged at intervals along the width direction of the distributor 1 and are parallel to side plates of the distributor 1.

The invention achieves the purpose of adjusting the flow of the flue gas entering each chamber of the dust remover 5 by arranging the distributor 1 at the upstream of the air inlet end of the dust remover 5, generally at the downstream of the outlet flue of the air preheater, uniformly dividing the flue gas into a plurality of strands of flue gas by the partition plates 7 arranged in the distributor 1, and respectively conveying the uniform flue gas into each chamber of the dust remover 5 by connecting the parallel flue 2 which is in one-to-one correspondence with the dust remover 5 through the connecting pipe 4 to remove dust.

The flue gas volume evenly distributed is the prerequisite of dust equipartition, thereby realizes through adjusting flue gas volume evenly distributed that flue gas flow and dust content in the flue gas in each bin distribute evenly, avoids appearing carrying the flue gas too much in certain bin, and the ash volume is great, causes dust pelletizing system overload operation, and the ash bucket material level risees, leads to stifled pipe, the not smooth problem of ash carrying to improve dust collection efficiency.

The number of the partition plates 7 is one less than that of the bins of the dust remover 5, so that the flow rate of flue gas distributed in each bin can be uniform, and the influence of uneven distribution on dust removal efficiency is avoided; and the partition plate 7 is arranged in parallel with the side plate of the distributor 1, so that the flow path of the flue gas and the dust in the flue gas can be optimized as much as possible, and the flow resistance is reduced.

Furthermore, the gas outlet end of the parallel flue 2 and the gas inlet end of the connecting pipe 4 are both provided with a manual flow adjusting device 3; in the preferred embodiment, the manual flow adjusting devices 3 are respectively arranged on the air outlet square flues at the air outlet ends of the parallel flues 2 and the air inlet square flues at the air inlet ends of the connecting pipes 4, so as to adjust the resistance of each parallel branch, thereby adjusting the flow of the flue gas in each branch and uniformly distributing the flue gas into each chamber of the dust remover 5.

Furthermore, the guide plate 6 is arranged at the curve part of the parallel flue 2, the shape of the guide plate is consistent with the curve contour and parallel to the curve, the flow path of the flue gas and the dust particles in the flue gas can be optimized, and the newly increased resistance of the flue gas is reduced as much as possible.

Further, the parallel flue also comprises an outlet parallel flue which is arranged between the air outlet end of the dust remover 5 and the induced draft fan; and a manual flow adjusting device 3 is arranged in the outlet parallel flue and is used for adjusting the resistance of each parallel flue, and finally, the flue gas flow of each parallel flue is uniform.

Furthermore, the number of the parallel flue is the same as that of the bins of the dust remover 5, so that the flue gas is uniformly divided into corresponding strands, and the uniform distribution of the flow of the flue gas entering each bin of the dust remover 5 is ensured.

Furthermore, a flow velocity measuring instrument and a dust amount measuring instrument are arranged in the parallel flue, so that the actual flue gas amount distribution condition in the parallel flue 2 and the outlet parallel flue 4 can be monitored in real time, the flue gas amount in each parallel flue is accurately adjusted by adjusting the manual flow adjusting device 3, and the flue gas in each chamber of the dust remover 5 is uniformly distributed.

Further, the lower bottom plate 9 of the distributor 1 is arranged in an upward inclined mode, and the lower end of the distributor 1 is provided with a square round joint 8, so that large particle dust can circulate conveniently. This is because the deviation of the particle size distribution causes the deviation of the dust amount distribution, which more substantially affects the characteristics of the specific resistance of the dust particles, the temperature reduction agglomeration, and the like, and affects the dust removal efficiency. Therefore, the large-particle dust smoothly circulates in each parallel flue to be the key of dust uniform distribution, the lower bottom plate 9 of the distributor 1 is arranged at a certain upward inclination angle, and the square round section 8 is arranged at the lower end of the distributor 1, so that the flow resistance of the large-particle dust can be reduced as much as possible, and the dust uniform distribution is favorably realized.

Furthermore, the distributor 1 is of a vertical surface structure, the height of the distributor 1 is in reducing arrangement from large to small along the smoke flowing direction, and the width is in reducing arrangement from small to large along the smoke flowing direction, so that the flow resistance of large-particle dust can be reduced as much as possible, and the distributor is matched with and adapted to the connection of a plurality of parallel flues 2.

Furthermore, the air outlet end of the parallel flue 2 is arranged along the central axis of the chamber of the dust remover 5, so that dust can enter the dust removing cloth bag more uniformly, and the dust removing efficiency is improved.

Example 1

As shown in fig. 1, in this embodiment 1, N is 3, the dust remover 5 is a three-chamber dust remover, the dust uniform distribution device of the dust remover includes a distributor 1, parallel flues 2 and connecting pipes 4, 3 parallel flues 2 and 3 connecting pipes 4 are provided, and 3 parallel flues 2 are provided between the distributor 1 and the dust remover 5, wherein the air inlet ends of 2 parallel flues 2 are connected to the air outlet end of the distributor 1 opposite to one side of the dust remover 5, the air inlet ends of 1 parallel flue 2 are connected to the air outlet end of the side plate of the distributor 1, and the air outlet ends of 3 parallel flues 2 are connected to the air inlet ends of 3 chambers of the dust remover 5 through 3 connecting pipes in a one-to-one correspondence manner;

the setting of 1 distributor of this embodiment is behind air preheater export flue, its inlet end links to each other with air preheater export flue, be provided with 2 division boards 7 in the distributor 1, it evenly arranges to be the interval along its width direction, and parallel with distributor 1's curb plate, thereby make the flue gas follow air preheater export flue evenly fall into 3 branches of flue gas after 3 parallelly connected flues 2 and 3 connecting pipes 4 that correspond the end and be connected of giving vent to anger through with distributor 1 respectively get into 3 5 storehouses of dust remover, the parallelly connected flue setting of export is between draught fan and 5 exports of dust remover, the inlet end of the parallelly connected flue of 3 exports respectively with the end one-to-one connection of giving vent to anger of 3 storehouses of dust remover 5.

The distributor 1 of this embodiment 1 is the facade body structure, and its height exists the reducing from big to little along flue gas flow direction, and the width exists the reducing from small to big along flue gas flow direction, and lower plate 9 upwards forms certain slope along flue gas flow direction, and the width is crescent along flue gas flow direction, and the large granule dust circulation of being convenient for to adapt to 3 parallelly connected flues 2 and distributor 1 end of giving vent to anger and be connected, and 1 lower extreme of distributor is provided with square circle festival 8.

The bend department of parallelly connected flue 2 of this embodiment 1 is equipped with the arc guide plate, the radian of arc guide plate is the same with the bend radian and with bend parallel arrangement, all be equipped with manual regulation baffle in 3 parallelly connected flues 2 and 3 export parallelly connected flues, velocity of flow tester and dust volume tester, parallelly connected flue 2's manual regulation baffle is located behind the arc guide plate, parallelly connected flue 2's the end side flue of giving vent to anger, export parallelly connected flue's manual regulation baffle is located the end side flue of admitting air of exporting parallelly connected flue.

Example 2

As shown in fig. 2, the dust uniform distribution device in front of the dust remover in this embodiment 2 includes a distributor 1, parallel flues 2 and connecting pipes 4, the dust remover 5 has two chambers, 2 parallel flues 2 and 2 connecting pipes 4 are provided, 2 parallel flues 2 are provided between the distributor 1 and the dust remover 5, the air inlet ends of the 2 parallel flues 2 are connected with the air outlet end of the distributor 1 opposite to one side of the dust remover 5, and the air outlet ends of the 2 parallel flues 2 are respectively connected with the air inlet ends of the 2 chambers of the dust remover 5 in a one-to-one correspondence manner;

the setting of 2 distributors of this embodiment 1 is behind air preheater export flue, its inlet end links to each other with air preheater export flue, be provided with 1 division board 7 in the distributor 1, it evenly arranges to be the interval along its width direction, and parallel with distributor 1's curb plate, thereby make the flue gas follow air preheater export flue evenly fall into 2 branches of gas after 2 branches of gas fume with distributor 1 give vent to anger 2 parallelly connected flues 2 and 2 connecting pipes 4 that the end corresponds and is connected get into 2 5 storehouses of dust remover respectively, the parallelly connected flue setting of export is between draught fan and 5 exports of dust remover, 2 parallelly connected flues of export inlet end is connected with the end one-to-one that gives vent to anger of 2 storehouses of dust remover 5 respectively through 2 connecting pipes.

The distributor 1 of embodiment 2 is the facade body structure, and its height exists the reducing from big to little along flue gas flow direction, and the width exists the reducing from small to big along flue gas flow direction, and lower plate 9 upwards forms certain slope along flue gas flow direction, and the width is crescent along flue gas flow direction, and the large granule dust circulation of being convenient for to adapt to 2 parallelly connected flues 2 and distributor 1 and give vent to anger the end and be connected, and distributor 1 lower extreme is provided with square circle festival 8.

The bend department of the parallelly connected flue 2 of this embodiment 2 is equipped with the arc guide plate, the radian of arc guide plate is the same with the bend radian and with bend parallel arrangement, 2 parallelly connected flues 2 and 2 export all are equipped with manual adjusting baffle in the parallelly connected flue 4, velocity of flow tester and dust volume tester, parallelly connected flue 2's manual adjusting baffle is located behind the arc guide plate, parallelly connected flue 2's the end side flue of giving vent to anger, export the manual adjusting baffle of parallelly connected flue is located the end side flue of admitting air of the parallelly connected flue of export.

Example 3

As shown in fig. 3, in this embodiment 3, N is 1, the dust remover 5 is a chamber, the dust uniform distribution device of the dust remover includes a distributor 1, parallel flues 2 and a connecting pipe 4, wherein 1 parallel flue 2 and 1 connecting pipe 4 are provided, 1 parallel flue 2 is provided between the distributor 1 and the dust remover 5 and connected to the air outlet end of the distributor 1 opposite to one surface of the dust remover 5, and the air outlet end of 1 parallel flue 2 is correspondingly connected to the air inlet end of 1 chamber of the dust remover 5 through 1 connecting pipe;

in this embodiment 3, the distributor 1 is arranged behind the outlet flue of the air preheater, the air inlet end of the distributor is connected with the outlet flue of the air preheater, the outlet parallel flue is arranged between the induced draft fan and the 5 outlets of the dust remover, and the air inlet end of each outlet parallel flue is correspondingly connected with the air outlet end of each 1 chamber of the dust remover 5.

This embodiment 3 distributor 1 is facade body structure, and its height exists the reducing from big to little along flue gas flow direction, and the width exists the reducing from small to big along flue gas flow direction, and lower plate 9 upwards forms certain slope along flue gas flow direction, and the width is crescent along flue gas flow direction, and the large granule dust circulation of being convenient for, 1 lower extreme of distributor is provided with square circle festival 8.

In this embodiment 3, the parallel flue 2 and the outlet parallel flue are both provided with a manual adjusting baffle, the flow rate tester and the dust amount tester, the manual adjusting baffle of the parallel flue 2 is located behind the arc-shaped guide plate, the outlet end square flue of the parallel flue 2 is provided with a manual adjusting baffle, and the manual adjusting baffle of the outlet parallel flue is located in the inlet end square flue of the outlet parallel flue.

Example 4

As shown in fig. 4, in this embodiment 4, N is 4, the dust remover 5 is four chambers, the dust uniform distribution device of the dust remover includes a distributor 1, parallel flues 2 and a connecting pipe 4, 4 parallel flues 2 and 4 connecting pipes 4 are provided, and 4 parallel flues 2 are provided between the distributor 1 and the dust remover 5, wherein 2 parallel flues 2 are in a group, an air inlet end of each parallel flue is connected to an air outlet end of one side of the distributor 1 opposite to the dust remover 5 through one connecting flue, and air outlet ends of 4 parallel flues 2 are respectively connected to air inlet ends of 4 chambers of the dust remover 5 through 4 connecting pipes in a one-to-one correspondence manner;

this embodiment 4 distributor 1 sets up behind air preheater export flue, its inlet end links to each other with air preheater export flue, be provided with 3 division boards 7 in the distributor 1, it evenly arranges to be the interval along its width direction, and parallel with distributor 1's curb plate, thereby make the flue gas follow air preheater export flue evenly fall into 4 strands of flue gas after through 4 parallelly connected flues 2 and 4 connecting pipes 4 that correspond the end and be connected of giving vent to anger with distributor 1 respectively get into 4 5 storehouses of dust remover, the parallelly connected flue of export sets up between draught fan and 5 exports of dust remover, the inlet end of the parallelly connected flue of 4 exports respectively with the end one-to-one connection of giving vent to anger of 4 storehouses of dust remover 5.

This embodiment 4 distributor 1 is facade body structure, and its height exists the reducing from big to little along flue gas flow direction, and the width exists the reducing from small to big along flue gas flow direction, and lower plate 9 upwards forms certain slope along flue gas flow direction, and the width is crescent along flue gas flow direction, and the large granule dust circulation of being convenient for to adapt to 4 parallelly connected flues 2 and distributor 1 and give vent to anger the end and be connected, and distributor 1 lower extreme is provided with square circle festival 8.

The bend department of the parallelly connected flue 2 of this embodiment 4 is equipped with the arc guide plate, the radian of arc guide plate is the same with the bend radian and with bend parallel arrangement, all be equipped with manual regulation baffle in 4 parallelly connected flues 2 and 4 export parallelly connected flues, velocity of flow tester and dust volume tester, parallelly connected flue 2's manual regulation baffle is located behind the arc guide plate, parallelly connected flue 2's the end side flue of giving vent to anger, export parallelly connected flue's manual regulation baffle is located the end side flue of admitting air of the parallelly connected flue of export.