阅读说明：本技术 一种水膜静电除尘器 (Water film electrostatic precipitator ) 是由 张春昌 王德荣 郭小炜 程祥祥 刘军 聂金龙 于 2019-09-23 设计创作，主要内容包括：本发明公开了一种水膜静电除尘器,筒体中部设有多个均匀排列的阳极管单元；阳极管单元包括水膜发生部件、阳极管以及蓄水层部件；水由下往上进入水膜发生部件内部,并从顶端向外壁溢流,在重力作用下向下流动到达蓄水层部件,通过排水孔缓慢溢流往下到达水膜发生部件与阳极管内壁形成的二次蓄水层；再往下通过第多个均匀分布的排水槽继续溢流至阳极管内壁形成均匀的水膜,捕捉静电场作用下向极板运动的粉尘、携带粘性细微颗粒物的柴油机烟气经过收尘管,并流入静电除尘器下部的收集器内,实现粘性细微颗粒的脱除。本发明结构改进成本较低,改进的水膜发生器取代原来的喷嘴和水管,进一步降低了设备成本；形成的水膜更为稳定均匀。(The invention discloses a water film electrostatic precipitator, wherein the middle part of a cylinder is provided with a plurality of anode tube units which are uniformly arranged; the anode tube unit comprises a water film generation component, an anode tube and a water storage layer component; water enters the water film generating component from bottom to top, overflows from the top end to the outer wall, flows downwards under the action of gravity to reach the water storage layer component, and slowly overflows downwards through the water discharging holes to reach a secondary water storage layer formed by the water film generating component and the inner wall of the anode tube; and then continuously overflowing to the inner wall of the anode tube to form an even water film downwards through a plurality of uniformly distributed drainage grooves, capturing dust moving to the polar plate under the action of an electrostatic field and diesel engine smoke carrying sticky fine particles, passing through a dust collection pipe, and flowing into a collector at the lower part of the electrostatic precipitator to remove the sticky fine particles. The improved structure of the invention has lower cost, and the improved water film generator replaces the original nozzle and water pipe, thus further reducing the equipment cost; the formed water film is more stable and uniform.)

1. A water film electrostatic precipitator is characterized by comprising a cylinder body (1-1), a flue gas inlet (1-2), a flue gas outlet (1-3), a water inlet pipe (1-4) and a water outlet (1-5); the smoke inlet (1-2) and the water outlet (1-5) are arranged at the lower part of the cylinder body (1-1), and the smoke outlet (1-3) is arranged at the top of the cylinder body (1-1); the water inlet pipe (1-4) is arranged on the side surface of the middle part of the cylinder body (1-1);

the middle part of the cylinder body (1-1) is provided with a plurality of anode tube units and cathode units which are uniformly arranged; the anode tube unit comprises a water film generation component (1), anode tubes (1-9) and a water storage layer component (3);

the water film generating component (1) and the anode tubes (1-9) are both of hollow structures, and the water film generating component (1) comprises a first connecting part (11) and a second connecting part (12) which are sequentially arranged from top to bottom;

the first connecting part (11) is clamped above the water storage layer part (3); the second connecting part (12) penetrates through the aquifer component (3) and is arranged in the anode tube (1-9); the outer wall of the lowest end of the first connecting part (11) is provided with a plurality of concave drain holes (111) which extend to the second connecting part (12);

a first convex part (121) is arranged on the outer wall of the joint of the second connecting part (12) and the first connecting part (11), and a second convex part (122) is arranged on the outer wall of the lowest end of the second connecting part (12); the outer diameters of the first convex part (121) and the second convex part (122) are the same as the inner diameters of the anode tubes (1-9); the outer wall of the second convex part (122) is provided with a plurality of concave drainage grooves (1221).

2. The water film electrostatic precipitator of claim 1, wherein: the cathode unit comprises a cathode frame (1-8) and cathode wires (1-81) arranged in each anode tube (1-9).

3. The water film electrostatic precipitator of claim 1, wherein: a water tank (1-41) is also arranged between the water inlet pipe (1-4) and the cylinder body (1-1).

4. The water film electrostatic precipitator of claim 1, wherein: a hot air blowing system (1-10) is further arranged on one circle outside the cylinder body (1-1); the hot air blowing system (1-10) comprises a hot air pipe and an insulator chamber.

5. The water film electrostatic precipitator of claim 1, wherein: the number of the drain holes (111) is at least 6-8; the first convex part is uniformly arranged on the outer wall of the lowest end of the first connecting part (11) and extends downwards to the first convex part (121);

6. the water film electrostatic precipitator of claim 1, wherein: at least 6-8 drainage grooves (1221) are uniformly distributed on the periphery of the second convex part (122) in a circle.

7. The water film electrostatic precipitator of claim 6, wherein: the drainage grooves (1221) are strip-shaped grooves or wedge-shaped grooves.

8. The water film electrostatic precipitator of claim 1 or 7, wherein: the depth of the drainage groove (1221) is 0.5-3mm, and the width of the drainage groove is 0.5-3 mm.

9. The water film electrostatic precipitator of claim 1, wherein: the upper part of the anode tube unit is provided with a spray header (1-6), and the lower part is provided with an air flow uniform distribution plate (1-7).

10. The water film electrostatic precipitator of claim 1 or 9, wherein: and a water vapor atomizing device (1-11) is also arranged at the lower part of the anode tube unit in the cylinder body (1-1).

Technical Field

The invention relates to a water film electrostatic dust collector, in particular to a water film electrostatic dust collector.

Background

The existing diesel engine dust removal device is generally in a DOC + DPF mode, but the dust removal device in the mode is generally only suitable for a high-speed diesel engine, a medium-speed engine and a low-speed engine can not be installed generally, the dust removal device in the mode is used for a long time and is easy to cause blockage, the online cleaning technology is immature, and sticky particles are easy to adhere to the surface and are difficult to treat when tail gas of the diesel engine is treated.

The water film electrostatic dust remover is a dust remover with wider particle size for removing particles, simple structure and low air speed, and can also treat sticky particles, the general structure of the water film electrostatic dust remover is a circular cylinder structure, and the working principle of the water film electrostatic dust remover is that dust particles in smoke dust are thrown to the wall of a water film by the action of strong centrifugal force and are washed away by water flowing down from the side wall, so that the dust remover product for removing the dust particles is obtained. Water enters the barrel from a water injection groove at the upper part of the dust remover, so that a layer of water film is formed on the inner wall of the whole barrel and flows from top to bottom, smoke enters tangentially from the lower part of the barrel and rises in the barrel in a rotating manner, dust-containing gas always rubs with the water film on the inner wall surface of the barrel under the action of centrifugal force, and thus the dust-containing gas is wetted by the water film, and dust particles flow to the bottom of the dust remover along with water and are discharged from an overflow hole. The bottom sealing of the cylinder body is provided with a water sealing groove to prevent the smoke from leaking from the lower part, and the cleaning hole is convenient for cleaning the bottom of the cylinder body. And discharging the wastewater after dust removal from the bottom overflow hole into a sedimentation tank, and performing sedimentation neutralization and recycling. The purified gas is led out through the cone part on the upper part of the cylinder body, thereby achieving the aim of dust removal.

However, the water film generation in the existing water film dust collector is generally formed by a nozzle, but the existing water film dust collector has certain defects, splashed water drops are generated by the water film formed by the nozzle, the uniformity of the generated water film is limited, and the discharging effect of the electrostatic dust collector is disturbed, so that the existing water film dust collector has certain application obstruction in the dust collection of diesel engine exhaust.

Disclosure of Invention

The purpose of the invention is as follows: in order to solve the problems in the prior art, the invention provides a water film electrostatic dust collector which has low air velocity, small pressure loss and high dust collection efficiency; can form a stable and uniform water film to avoid interfering the discharging effect of the electrostatic dust collector.

The technical scheme is as follows: in order to achieve the purpose, the invention can adopt the following technical scheme: a water film electrostatic precipitator comprises a cylinder, a flue gas inlet, a flue gas outlet, a water inlet pipe and a water outlet; the flue gas inlet and the water outlet are arranged at the lower part of the cylinder body, and the flue gas outlet is arranged at the top of the cylinder body; the water inlet pipe is arranged on the side surface of the middle part of the cylinder body;

the middle part of the cylinder body is provided with a plurality of anode tube units and cathode units which are uniformly arranged;

the anode tube unit comprises a water film generation component, an anode tube and a water storage layer component;

the water film generating component and the anode tube are both of hollow structures, and the water film generating component comprises a first connecting part and a second connecting part which are sequentially arranged from top to bottom;

the first connecting part is clamped above the water storage layer part; the second connecting part penetrates through the aquifer component and is arranged inside the anode pipe; the outer wall of the lowest end of the first connecting part is provided with a plurality of concave drain holes which extend to the second connecting part;

the outer wall of the second connecting part at the connecting part with the first connecting part is provided with a first convex part, and the outer wall of the lowest end of the second connecting part is provided with a second convex part; the outer diameters of the first convex part and the second convex part are the same as the inner diameter of the anode tube; and a plurality of concave drainage grooves are formed in the outer wall of the second convex part.

In some embodiments, the cathode unit includes a cathode frame and cathode filaments embedded inside respective anode tubes.

More preferably, a water tank is arranged between the water inlet pipe and the barrel.

A hot air blowing system is further arranged on one circle outside the cylinder; the hot air blowing system comprises a hot air pipe and an insulator chamber; and hot air is introduced to keep the indoor drying of the insulator all the time. The insulator is prevented from being in the electrostatic dust collector, and small water drops or fine particles cannot creep, so that the normal operation of the electrostatic dust collector is prevented from being influenced.

In order to increase the drainage effect of the aquifer component, at least 3-20 drainage holes are formed; the first convex part is uniformly arranged on the outer wall of the lowest end of the first connecting part and extends downwards to the first convex part;

in order to form a more uniform water film, at least 3-20 drainage grooves are uniformly distributed on the periphery of the second convex part in a circle.

Furthermore, the drainage grooves are strip-shaped grooves or wedge-shaped grooves.

In order to ensure that the water film is formed more stably and uniformly, the depth of the drainage groove is 0.5-3mm, and the width of the drainage groove is 0.5-3 mm.

The upper part of the anode tube unit is provided with a spray head, and the lower part of the anode tube unit is provided with an air flow uniform distribution plate; after the dust remover is used for a long time, the dust remover can be sprayed and washed by using the spray head, and the smoke can uniformly pass through the dust remover by the uniform airflow distribution plate.

The lower part of the anode tube unit in the cylinder body is also provided with a water vapor atomization device, so that on one hand, the effect of reducing the smoke temperature of the diesel engine is achieved, on the other hand, the smoke humidity can be improved, and the adsorption and the self-flowing of smoke dust are facilitated.

Has the advantages that: the invention has the following advantages:

(1) the dust removal efficiency is high, larger gas quantity can be purified, the particle size range of removed particles is wider, sticky particles can be removed, dust-containing flue gas with higher temperature can be removed, the gas flow speed is low, and the pressure loss is small;

(2) the structure improvement cost is lower, the processing is simple, the energy consumption is low, the water film generator replaces the original nozzle and water pipe to form the film generator, and the equipment cost is further reduced;

(3) the formed water film is more stable and uniform, the generation of splashing small water drops is avoided, and the dust removal effect is improved;

(4) the dust remover suitable for multiple places comprises an electrostatic dust remover, and solves the problem that the discharge effect of the conventional water film electrostatic dust remover is interfered to some extent.

Drawings

FIG. 1 is a schematic structural view of a water-film electrostatic precipitator according to the present invention;

FIG. 2 is a schematic structural diagram of the anode tube unit in the water film electrostatic precipitator of the present invention;

FIG. 3 is a schematic view of an enlarged structure of the joint of the water film generating component and the anode tube in the front view direction;

FIG. 4 is a schematic structural view of a water film generating part according to the present invention.

Detailed Description

Referring to fig. 1-4, the invention discloses a water film electrostatic precipitator, which comprises a cylinder 1-1, a flue gas inlet 1-2, a flue gas outlet 1-3, a water inlet pipe 1-4 and a water outlet 1-5; the upper part of the cylinder 1-1 is in an inverted cone shape, and the lower part of the cylinder is in a cone structure;

the flue gas inlet 1-2 and the water outlet 1-5 are arranged at the lower part of the cylinder body 1-1, wherein the flue gas inlet 1-2 is arranged at the side surface, and the water outlet 1-5 is arranged at the cone bottom; the flue gas outlet 1-3 is arranged at the top cone top of the cylinder 1-1; the water inlet pipe 1-4 is arranged on the side surface of the middle part of the cylinder body 1-1; a water tank 1-41 is also arranged between the water inlet pipe 1-4 and the cylinder body 1-1; a hot air blowing system 1-10 is further arranged on one circle outside the cylinder body 1-1; the hot air blowing system 1-10 comprises a hot air pipe and an insulator chamber; hot air is introduced, and the dryness of the insulator chamber is always kept; the insulator is prevented from being in the electrostatic dust collector, and small water drops or fine particles cannot creep, so that the normal operation of the electrostatic dust collector is prevented from being influenced.

The middle part of the cylinder 1-1 is provided with a plurality of anode tube units and cathode units which are uniformly arranged; the upper part of the anode tube unit is provided with a spray header 1-6, and the lower part is provided with an air flow uniform distribution plate 1-7; after the dust remover is used for a long time, the dust remover can be sprayed and washed by using the spray head, and the smoke can uniformly pass through the dust remover by the uniform airflow distribution plate. And a water vapor atomization device is arranged below the air flow uniform distribution plates 1-7, so that on one hand, the effect of reducing the temperature of the diesel engine flue gas is achieved, on the other hand, the flue gas humidity can be improved, and the adsorption and the self-flow of flue gas dust are facilitated.

The cathode unit includes a cathode frame 1-8 and cathode wires 1-81 built in the respective anode tubes 1-9.

The anode tube unit comprises a water film generation component 1, anode tubes 1-9 and a water storage layer component 3;

the water film generating component 1 is an annular component with uneven upper and lower outer diameters; comprises a first connecting part 11 and a second connecting part 12 which are arranged from top to bottom in sequence; the anode tubes 1-9 are hollow cylindrical structures;

the first connecting part 11 is clamped above the water storage layer part 3; the second connecting part 12 passes through the middle position of the water storage layer part 3 and is arranged in the water film forming part 2; the outer wall of the lowest end of the first connecting part 11 is provided with a plurality of concave drain holes 111 which extend to the second connecting part 12;

a first convex part 121 is arranged on the outer wall of the joint of the second connecting part 12 and the first connecting part 11, and a second convex part 122 is arranged on the outer wall of the lowest end of the second connecting part 12; the outer diameters of the first and second protrusions 121 and 122 are the same as the inner diameters of the anode tubes 1 to 9; the second connecting part 12 forms a secondary water storage layer through the first convex part 121, the second convex part 122 and the inner wall of the anode tube 1-9, and the outer wall of the second convex part 122 is provided with a plurality of concave drainage grooves 1221. In order to increase the drainage effect of the aquifer component, the number of the drainage holes 111 is 10; uniformly arranged on the outer wall of the lowest end of the first connecting part 11 and extending downwards to the first convex part 121; in order to form a more uniform water film, a circle of drain grooves 1221 with 10 wedge-shaped groove structures are uniformly distributed on the periphery of the second convex portion 122; in order to ensure that the water film is formed more stably and uniformly, the drainage grooves 1221 are set to have a groove depth of 0.5-3mm and a groove width of 0.5-3 mm.

The working principle is as follows:

the dust-containing gas is electrically separated when passing through a high-voltage electrostatic field, dust particles and negative ions are combined to be charged negatively and then tend to the surface of the anode tube 1-9 to be discharged and deposited, water enters a water tank from a water inlet pipe to supply water to the water film electrostatic dust collector, the water overflows from the water film generating component 1 at the top of the anode tube 1-9 to the outer wall and flows downwards under the action of gravity to reach the water storage layer component 3, and the water flows slowly overflow downwards to reach a secondary water storage layer formed by the second connecting component 12 and the inner wall of the anode tube 1-9 through a water discharging hole 111 formed between the first connecting part 11 and the water storage layer component 3; and then downwards continuously overflows to the inner wall of the anode tube 1-9 through a plurality of uniformly distributed drainage grooves 1221 on the second convex part 122 to form a uniform water film, so that dust moving to the polar plate under the action of an electrostatic field and diesel engine smoke carrying sticky fine particles pass through the anode tube and flow into a collector on the lower part of the electrostatic precipitator, and the sticky fine particles are removed.

The invention has lower structure improvement cost, simple processing and convenient installation, replaces the original nozzle and water pipe to form a film generator, and further reduces the equipment cost; the formed water film is more stable and uniform, the generation of splashing small water drops is avoided, and the dust removal effect is improved; the dust remover suitable for multiple places comprises an electrostatic dust remover, and solves the problem that the discharge effect of the conventional water film electrostatic dust remover is interfered to some extent.