CN110586324B

CN110586324B - Electrostatic dust collector

Info

Publication number: CN110586324B
Application number: CN201911002371.2A
Authority: CN
Inventors: 彭红; 李仁鹏; 姚强
Original assignee: Wuxi Yiju Environmental Protection Technology Development Co ltd
Current assignee: Wuxi Yiju Environmental Protection Technology Development Co ltd
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2024-02-23
Anticipated expiration: 2039-10-21
Also published as: CN110586324A

Abstract

The invention relates to an electrostatic precipitator, comprising: an inner cavity is formed in the outer cylinder, an air inlet pipe and an air outlet pipe are respectively arranged at two ends of the outer cylinder, and the air inlet pipe and the air outlet pipe are communicated with the inner cavity; the electrode rod extends in the inner cavity, a plurality of electrode plates are arranged on the periphery of the electrode rod, and tips are arranged on the outer edges of the electrode plates; the turbulent flow mechanism comprises a turbulent flow plate arranged in the air inlet pipe, the center of the turbulent flow plate protrudes towards the air inlet source, and the turbulent flow plate smoothly transits from the center to the periphery; the adsorption mechanism is arranged between the electrode rod and the inner wall of the outer cylinder, a first radial distance is reserved between the radial inner wall and the tip of the adsorption mechanism, a second radial distance is reserved between the radial outer wall of the adsorption mechanism and the inner wall of the outer cylinder, adsorption holes are densely distributed in the adsorption mechanism, and the adsorption holes penetrate and extend between the radial inner wall and the radial outer wall of the adsorption mechanism. The dust removal efficiency is improved.

Description

Electrostatic dust collector

Technical Field

The present invention relates to an electrostatic precipitator.

Background

The electric dust collector is high-efficiency energy-saving flue gas purifying equipment, has the advantages of high dust collection efficiency, large treatment flue gas amount, long service life, low maintenance cost and the like, and is widely applied under the condition of higher and higher environmental protection requirements at home and abroad.

The dust collection efficiency of the electric dust collector is affected by various factors, and how to improve the dust collection efficiency of the dust collector is a problem in reality.

Disclosure of Invention

The invention aims to provide an electrostatic precipitator, which improves the dust removal efficiency.

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

the invention provides an electrostatic precipitator, comprising:

the outer cylinder is internally provided with an inner cavity, two ends of the outer cylinder are respectively provided with an air inlet pipe and an air outlet pipe, and the air inlet pipe and the air outlet pipe are communicated with the inner cavity;

the electrode rod extends in the inner cavity, a plurality of electrode plates are arranged on the periphery of the electrode rod, and tips are arranged on the outer edges of the electrode plates;

the turbulent flow mechanism comprises a turbulent flow plate arranged in the air inlet pipe, the center of the turbulent flow plate protrudes towards the air inlet source, and the turbulent flow plate smoothly transits from the center to the periphery;

the adsorption mechanism is arranged between the electrode rod and the inner wall of the outer cylinder, a first radial distance is reserved between the radial inner wall of the adsorption mechanism and the tip, a second radial distance is reserved between the radial outer wall of the adsorption mechanism and the inner wall of the outer cylinder, adsorption holes are densely distributed in the adsorption mechanism, and the adsorption holes extend through between the radial inner wall and the radial outer wall of the adsorption mechanism.

Optionally, the outer cylinder comprises at least one main cylinder body connected end to end.

Optionally, the air inlet pipe comprises a plurality of air inlet pipes, the plurality of air inlet pipes are detachably connected with the outer cylinder in an alternative mode, and the diameter of the air inlet end of the plurality of air inlet pipes comprises at least two sizes.

Optionally, end covers are detachably arranged at two ends of the outer cylinder, and two ends of the electrode rod are fixed on the end covers.

Optionally, the two ends of the electrode rod are sleeved in the ceramic block, the inner end of the ceramic block extends into the inner cavity, and a protective sleeve is sleeved on the periphery of the inner end of the ceramic block.

Optionally, the electrode plate is provided with a stress hole.

Optionally, an electromagnetic isolation sheet is further arranged on the periphery of the electrode rod, at least one electrode sheet is arranged between adjacent electromagnetic isolation sheets, and the outer edge of each electromagnetic isolation sheet is a smooth edge.

Optionally, the electrode rod further comprises a separation tube, the separation tube and the electrode plates are sleeved on the electrode rod, the separation tube is arranged between the adjacent electrode plates, and at least one of the electrode plates and the separation tube is in contact with the electrode rod.

Optionally, the vortex mechanism further comprises a gas homogenizing cylinder body, the gas homogenizing cylinder body is arranged at two ends of the inner cavity, densely distributed through holes are formed in the side walls of the gas homogenizing cylinder body, and the side walls of the two gas homogenizing cylinder bodies face the air inlet pipe and the air outlet pipe respectively.

Optionally, a flange is disposed on the radially outer wall of the adsorption mechanism, and the flange extends toward the inner wall of the outer cylinder.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

the electrostatic precipitator of the invention applies high voltage to the electrode bar, the tip of the electrode bar discharges to generate electric arc, air flow (tail gas of diesel engine) enters the inner cavity from the air inlet pipe, particles in the air flow are hit by the electric arc to be charged with static electricity, the particles are adsorbed by the adsorption mechanism, and the air flow is discharged from the air outlet pipe. Because the turbulent flow mechanism is arranged, the turbulent flow plate in the turbulent flow mechanism disperses the air inflow, thereby disturbing the air flow, enabling the air flow to flow in the inner cavity more complicated, improving the time of the air flow processed in the inner cavity, and further improving the dust removal efficiency. Because the adsorption mechanism is separated from the tip and the inner wall of the outer cylinder by a certain distance, the air flow shuttles back and forth between the radial two walls of the adsorption mechanism, and the dust removal efficiency is improved.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:

FIG. 1 is a schematic perspective view of an electrostatic precipitator in accordance with a preferred embodiment of the present invention;

FIG. 2 is a central cross-sectional view of FIG. 1;

FIG. 3 is a schematic perspective view of the electrode rod and its upper part in FIG. 2;

FIG. 4 is another view of FIG. 3;

FIG. 5 is a schematic perspective view of the electrode sheet of FIG. 3;

FIG. 6 is a schematic perspective view of the electromagnetic spacer of FIG. 3;

FIG. 7 is a schematic perspective view of the septum of FIG. 3;

fig. 8 is a schematic perspective view of a spoiler mechanism provided in the intake pipe 2;

FIG. 9 is a central cross-sectional view of FIG. 8;

FIG. 10 is an enlarged schematic view of FIG. 2 at B;

wherein reference numerals are as follows:

1. an outer cylinder;

2. an air inlet pipe;

3. an air outlet pipe;

4. a homogenizing cylinder;

5. a first end;

6. a second end;

7. an inner cavity;

8. an end cap;

9. an electrode rod;

10. an electrode sheet;

11. an adsorption mechanism;

12. a mounting port;

13. a tip;

14. a first central bore;

15. a second central bore;

16. stress holes;

17. a wind passage;

18. a turbulence mechanism;

19. a spoiler;

20. a flange;

21. a connecting rod;

22. a ceramic block;

23. a protective sleeve;

24. an electromagnetic spacer;

25. a partition tube;

26. a hoop mechanism;

27. a fastener;

28. and (5) passing through pores.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.

As shown in fig. 1 and 2, the electrostatic precipitator comprises an outer cylinder 1, two ends (a second end 6 and a first end 5) of the outer cylinder 1 are respectively provided with an air inlet pipe 2 and an air outlet pipe 3, an inner cavity 7 extends between the air inlet pipe 2 and the air outlet pipe 3, and the air inlet pipe 2 and the air outlet pipe 3 are both communicated with the inner cavity 7. An electrode rod 9 is provided in the inner chamber 7, the electrode rod 9 extends along with the inner chamber 7, both ends of the electrode rod 9 are mounted on end plates 8, and the end plates 8 are provided at the ends (first end 5 and second end 6) of the outer cylinder 1. The outer cylinder 1 is provided at both ends (first end 5 and second end 6) with a fitting opening 12, and the end plate 8 is detachably capped on the fitting opening 12 by a hoop mechanism 26. The electrode rod 9 is provided with a plurality of electrode tabs 10 at the outer periphery. Diesel exhaust gas is introduced from the air inlet pipe 2, flows out from the air outlet pipe 3, high-voltage electricity is applied to the electrode rod 9, and particles in the diesel exhaust gas are adsorbed in the adsorption mechanism 11 through arc discharge of the outer edge tip 13 (see fig. 5) of the electrode plate 10.

In other embodiments, the outer cylinder 1 may be formed by connecting two or more main cylinders (not shown) end to end, so that the length of the outer cylinder 1 can be easily customized.

The present example is provided with a plurality of air intake pipes 2, the air intake pipe 2 comprising two parts, wherein the outer part is detachably connected to the inner part of the air intake pipe 2, wherein the inner part of the air intake pipe 2 is directly connected to the outer cylinder 1. Specifically, in this example, the outer portions of the plurality of intake pipes 2 are prepared. The plurality of intake pipes 2 (mainly, the outer side portion of the intake pipe 2) are connected to the outer cylinder 1 in an alternative manner and are detachably connected. The intake end diameters of the plurality of intake pipes 2 include at least two sizes, that is, the diameters of the outer portions have various sizes.

As shown in fig. 8 and 9, the air intake pipe 2 is provided therein with a spoiler mechanism 18, and specifically, an inner portion of the air intake pipe 2 is provided with the spoiler mechanism 18. The spoiler mechanism 18 includes a spoiler 19 and a connecting rod 21, the center of the spoiler 19 protrudes toward the intake air source, and the spoiler 19 smoothly transitions from the center to the periphery. The periphery of the spoiler 19 forms a gap from the inner wall of the air inlet pipe 2 at a distance for the passage of the air flow. The connecting rods 21 are arranged in a plurality and distributed on the periphery of the spoiler 19 and connected with the inner wall of the air inlet pipe 2, and are used for fixing the spoiler 19 in the air inlet pipe 2.

The spoiler 19 serves to interfere with the air flow. As shown in fig. 9,a, the spoiler 19 guides the air flow from the center to the periphery and passes through the gap between the periphery of the spoiler 19 and the inner wall of the intake pipe 2.

The spoiler 19 is also provided with a plurality of air passing holes 28. The number and shape of the air passing holes 28 are not limited. A portion of the air flow passes through the air passage 28 so that the back pressure in the exhaust pipe of the diesel engine is not significantly affected by the addition of the spoiler 19. In addition, the protrusion of the center of the spoiler 19 toward the intake source also contributes to reducing back pressure.

Under the shunting effect of the spoiler 19, the airflow is shunted from the center to the periphery of the spoiler 19, the airflow speed is slowed down, and certain vortex is generated in the air inlet pipe 2 in the follow-up process, so that the residence time of the airflow in the electrostatic precipitator is prolonged, and the particle removal efficiency in the airflow is further improved.

As shown in fig. 2, the turbulence mechanism 18 further includes two air homogenizing cylinders 4, where the air homogenizing cylinders 4 are disposed in the inner cavity 7 and located at two ends of the inner cavity 7. The air homogenizing cylinder 4 is approximately circular, the side walls of the air homogenizing cylinder 4 are provided with densely distributed through holes, and the side walls of the two air homogenizing cylinders 4 face the air inlet pipe 2 and the air outlet pipe 3 respectively. The air homogenizing cylinder 4 is beneficial to dispersing air flow and makes air inlet and air outlet more uniform.

As shown in fig. 10, both ends of the electrode rod 9 are sleeved in a ceramic block 22, and the ceramic block 22 is fixed on the end cover 8. The two ends of the electrode rod 9 are therefore also referred to as being fastened to the end caps 8. The inner end of the ceramic block 22 extends into the inner cavity 7, the outer periphery of the inner end of the ceramic block 22 is also sleeved with a protective sleeve 23, and the protective sleeve 23 is positioned in the inflator body 4. The protective sleeve 23 is used for isolating the ceramic block 22 from the diesel exhaust, so that particles in the diesel exhaust entering from the air inlet pipe 2 are not easy to adhere to the ceramic block 22, and the performance of the ceramic block 22 is not affected.

As shown in fig. 3 and 4, the electrode rod 9 extends linearly, and the electrode sheet 10, the electromagnetic separator 24, and the separator 25 are fitted around the outer circumference in the extending direction.

As shown in fig. 5, the outer edge of the electrode sheet 10 is provided with a ring of tips 13 for discharge. The electrode plate 10 is provided with a first central hole 14 at the center, and the first central hole 14 is sleeved on the electrode rod 9.

The electrode plate 10 is also provided with the stress hole 16, so that the deformation of the electrode plate 10 after being heated by the tail gas of the high-temperature diesel engine can be reduced, the weight of the electrode plate 10 can be reduced, and the material consumption of the electrode plate 10 can be reduced. So that the electrode sheet 10 functions better and the device is lighter and advantageous in terms of material costs.

An electromagnetic spacer 24 as shown in fig. 6 is also fitted over the electrode rod 9. The center of the electromagnetic isolation sheet 24 is provided with a second center hole 15, and the second center hole 15 is sleeved on the electrode rod 9. The electromagnetic isolation sheets 24 are distributed in the electrode sheets 10, at least one electrode sheet 10 can be arranged between every two adjacent electromagnetic isolation sheets 24, and 2-5 electrode sheets 10 are arranged between every two adjacent electromagnetic isolation sheets 24 conveniently. The outer edge of the electromagnetic separator 24 is a smooth edge so as not to support discharge, and thus the arrangement of the electromagnetic separator 24 can concentrate the discharge segments of the electrode sheet 10, thereby improving the discharge efficiency.

The electromagnetic isolating sheet 24 is also provided with an air passage 17, so that the exhaust gas of the diesel engine to be treated can flow through. The position and shape of the wind passage 17 are not particularly limited. In this example, the wind passage 17 extends from the outer edge of the electromagnetic separator 24 to the center, and is substantially fan-shaped.

As shown in fig. 7, the separator 25 is a short tubular body, is fitted around the outer periphery of the electrode rod 9, and is in clearance fit with the electrode rod 9. The separator 25 abuts between the adjacent electrode sheets 10 so as to space the two electrode sheets 10 apart from each other by a certain distance. At least one of the electrode sheet 10 and the separator 25 is in contact with the electrode rod 9 to effect discharge of high voltage electricity conducted to the tip 13. A separator 25 is also provided between the electromagnetic separator 24 and the adjacent electrode sheet 10.

As shown in fig. 3 and 4, the two ends of the electrode plate 10 and the separator 25 are integrally provided with fasteners 27, in this example, the fasteners 27 are nuts, the fasteners have internal threads, the periphery of the electrode rod 9 is provided with external threads matched with the internal threads of the nuts, and the nuts are screwed on the electrode rod 9 to fix the nuts and the electrode rod 9. In other embodiments, the fastening member 27 may have other structures, for example, the fastening member 27 is a pin, the electrode rod 9 is provided with a corresponding socket, and the pin is inserted into the socket to complete the fixation.

As shown in fig. 2, an adsorption mechanism 11 is further disposed in the inner cavity 7, and the adsorption mechanism 11 is a steel wire mesh having a certain radial thickness. The adsorption mechanism 11 extends around the outer periphery of the electrode rod 9 by one turn, i.e., is arranged between the electrode rod 9 and the inner wall of the outer cylinder 1.

The adsorption mechanism 11 has adsorption holes densely distributed therein. And the adsorption hole extends therethrough between the radially outer wall and the radially inner wall of the adsorption mechanism 11. The radially inner wall of the adsorption mechanism 11 is at a first radial distance from the tip 13 and the radially outer wall of the adsorption mechanism 11 is at a second radial distance from the inner wall of the outer cartridge 1. The first radial distance and the second radial distance may be achieved in various ways. And the magnitudes of the first radial distance and the second radial distance are not particularly limited.

The adsorption holes on the adsorption mechanism 11 can enable more particles in the flue gas to be attached, and have larger adsorption capacity. And the flue gas can shuttle back and forth between the radial outer wall and the radial inner wall of the adsorption mechanism 11, so that the flow of the flue gas in the adsorption mechanism 11 is increased, and the adsorption of particulate matters in the flue gas is further increased.

The adsorption mechanism 11 is inserted into the inner cavity 7 in an inserting mode, so that the adsorption mechanism 11 can be conveniently pulled out from the inner cavity 7 for cleaning, and the end cover 8 can be opened for inserting or taking out the adsorption mechanism 11. After a period of use, the adsorption mechanism 11 is taken out and can be reused by simple flushing.

The radially outer wall of the adsorption mechanism 11 is also provided with a flange 20, and the flange 20 extends to the inner wall of the outer cylinder 1. The flange 20 may be a single protrusion, such as a cylindrical protrusion, provided on the radially outer wall of the suction means 11, or may extend linearly on the radially outer wall surface of the suction means 11 as in the present example. In this example, the flange 20 extends linearly over the entire circumference on the radially outer wall surface of the suction mechanism 11, forming a ring shape. The flange 20 is such that the suction means 11 is at said second radial distance from the inner wall of the outer cylinder 1, which distance the flange 20 is advantageous to maintain.

In summary, the electrostatic precipitator of the present example aims to improve the adsorption capacity of particulate matters in the tail gas of a diesel engine through various ways.

The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the present invention and to implement the same, but are not intended to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.

Claims

1. An electrostatic precipitator, comprising:

the novel air conditioner comprises an outer barrel (1), wherein an inner cavity (7) is formed in the outer barrel (1), an air inlet pipe (2) and an air outlet pipe (3) are respectively formed in two ends of the outer barrel (1), and the air inlet pipe (2) and the air outlet pipe (3) are communicated with the inner cavity (7);

the electrode rod (9), the electrode rod (9) extends in the inner cavity (7), a plurality of electrode plates (10) are arranged on the periphery of the electrode rod (9), and tips (13) are arranged on the outer edges of the electrode plates (10);

the air inlet pipe (2) is provided with a turbulent flow mechanism (18), the turbulent flow mechanism (18) comprises a turbulent flow plate (19) arranged in the air inlet pipe (2), the center of the turbulent flow plate (19) protrudes towards an air inlet source, and the turbulent flow plate (19) smoothly transits from the center to the periphery;

the adsorption mechanism (11), the adsorption mechanism (11) is arranged between the electrode rod (9) and the inner wall of the outer cylinder (1), a first radial distance is reserved between the radial inner wall of the adsorption mechanism (11) and the tip (13), a second radial distance is reserved between the radial outer wall of the adsorption mechanism (11) and the inner wall of the outer cylinder (1), adsorption holes are densely distributed in the adsorption mechanism (11), and the adsorption holes extend through between the radial inner wall and the radial outer wall of the adsorption mechanism (11);

the two ends of the electrode rod (9) are sleeved in the ceramic block (22), the inner end of the ceramic block (22) extends into the inner cavity (7), a protective sleeve (23) is sleeved on the outer periphery of the inner end of the ceramic block (22), stress holes (16) are formed in the electrode plate (10), electromagnetic isolation sheets (24) are further arranged on the outer periphery of the electrode rod (9), at least one electrode plate (10) is arranged between adjacent electromagnetic isolation sheets (24), the outer edge of each electromagnetic isolation sheet (24) is a smooth edge, the vortex mechanism (18) further comprises a uniform air cylinder body (4), the uniform air cylinders (4) are arranged at two ends of the inner cavity (7), densely distributed through holes are formed in the side walls of the uniform air cylinders (4), and the side walls of the two uniform air cylinders (4) face the air inlet pipe (2) and the air outlet pipe (3) respectively;

the electrode rod is characterized by further comprising a separation tube (25), wherein the separation tube (25) and the electrode plates (10) are sleeved on the electrode rod (9), the separation tube (25) is arranged between the adjacent electrode plates (10), and at least one of the electrode plates (10) and the separation tube (25) is in contact with the electrode rod (9).

2. An electrostatic precipitator according to claim 1, in which: the outer cylinder (1) comprises at least one main cylinder body connected end to end.

3. An electrostatic precipitator according to claim 1, in which: the air inlet pipe (2) is detachably connected with the outer cylinder (1) in an alternative mode, and the diameter of the air inlet end of the air inlet pipe (2) comprises at least two sizes.

4. An electrostatic precipitator according to claim 1, in which: end covers (8) are detachably arranged at two ends of the outer cylinder (1), and two ends of the electrode rod (9) are fixed on the end covers (8).

5. An electrostatic precipitator according to claim 1, in which: the radial outer wall of the adsorption mechanism (11) is provided with a flange (20), and the flange (20) extends towards the inner wall of the outer cylinder (1).