CN110653068A

CN110653068A - Dust collection type cathode wire of electric dust collector

Info

Publication number: CN110653068A
Application number: CN201910320640.3A
Authority: CN
Inventors: 解标
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-20
Filing date: 2019-04-20
Publication date: 2020-01-07

Abstract

The invention discloses a dust collection type cathode wire of an electric dust collector, which consists of discharge prickles 1, a framework 2, a dust collection body 3 and a dust falling cavity 4. The purpose is in order to break through the limitation of traditional electrostatic precipitator negative pole line function, outside keeping the discharge's of traditional negative pole line basic function, novel negative pole line still possesses that specific surface is big, shakes and beats and do not produce the secondary raise dust, makes three kinds of functions of discharging, gather dust, do not raise dust combine organically on novel negative pole line, has that specific surface is big, discharge intensity is big, characteristics such as corona is even. The dust collecting area of the dust collecting type cathode wires can be equivalent to that of the anode plate, and each dust collecting type cathode wire is equivalent to that of one anode plate.

Description

Dust collection type cathode wire of electric dust collector

Technical Field

The invention relates to the technical field of electrostatic dust collector equipment matched with industrial kiln smoke dust purification, in particular to a cathode wire of a core component of an electrostatic dust collector.

Background

At present, the known cathode wires of the electrostatic dust collector comprise a BS type, an RS type, a fishbone needle type, a spiral type, a star type and the like, the cathode wires are connected with a negative high-voltage power supply, the core function is corona discharge to ionize smoke gas to generate free electrons (negative charges) and positive charges (protons), dust carrying the negative charges moves to an anode plate under the action of an electric field force and is adsorbed by the anode plate, and positively charged dust should move to a cathode and is adsorbed by the cathode.

The known dust removal efficiency calculation formula of the electric dust remover is as follows: phi = eta =1-e, as (A omega/Q), wherein eta is dust collection efficiency (unit%), A is dust collection area (unit m2), omega is dust approach speed (unit m3/m2/s), and Q is smoke volume (unit m 3/s), from which it can be seen that the dust collection area of the electrostatic precipitator is one of the key parameters determining the dust collection efficiency of the electrostatic precipitator, and it is one of the effective technical measures to perform dust collection area expansion modification on the conventional electrostatic precipitator, the known dust collection area is the dust collection area of the anode plate, and the known cathode dust collection area is ignored.

In the technical field of known electric dust collectors, when a cathode rapping system fails, the situation that dust is wrapped on a cathode line can be generated, the objective existence of cathode dust collection is fully explained, the cathode line is used as a discharge electrode and not used as a dust collection electrode, the calculation of the dust collection area of the electric dust collector is based on the projection area of an anode plate, and the cathode line is ignored although the cathode line also has a limited surface.

The invention researches a cathode wire which has large specific surface area, does not influence the discharge function of the traditional cathode wire and does not generate secondary dust raising after vibration to become an ideal product in the field, is a demand for realizing the function upgrading of the electric dust collector, and is a technical measure with higher cost performance for improving the efficiency of the traditional electric dust collector.

Disclosure of Invention

The invention aims to break through the limitation of the cathode wire function of the traditional electric dust collector, and the novel cathode wire has the characteristics of large specific surface area, no secondary dust emission caused by vibration, capability of organically combining three functions of discharging, dust collection and dust emission prevention on the novel cathode wire, large dust collection area, high discharge strength, uniform corona and the like while keeping the basic function of the traditional cathode wire discharging.

The beneficial effects of the invention for strengthening the function of cathode dust collection also include: compared with the known electric dust collector, the novel cathode dust collecting area can reach more than half of the anode dust collecting area, and the capacity increasing transformation of the electric dust collector can be realized by replacing the novel cathode wire related to the invention under the condition of not changing the shell of the traditional electric dust collector.

The invention provides a novel dust-collecting and dust-raising-free cathode wire which can be used with a cathode of a known electric dust collector at intervals to make up the defect of cathode dust collection, so that the cathode wire with the original structure is responsible for discharging, and the cathode wire provided by the invention is newly added to be responsible for dust collection, thereby strengthening the collection of positively charged dust.

The dust-collecting cathode wire can also completely replace the traditional cathode wire, so that the functions of discharging, collecting dust and avoiding dust emission during vibration are intensively optimized.

The dust collection type cathode wire can be used on a dry type electric dust collector or a wet type electric dust collector according to different materials.

The utility model provides an electrostatic precipitator dust collection type negative pole line, includes four parts such as discharge prickle, dust collection body, skeleton, ash falling cavity.

The discharge tip may be integrally punched with the dust collecting body, and the further discharge tip may be a sharp tip custom-made welded to the dust collecting body.

The dust collecting body is formed by rolling two dust collecting bodies into a C-shaped structural line body through special equipment after holes with oblique louvers are formed through punching, then the two dust collecting bodies are combined together to be coupled out of an internal cavity, positive charge dust is gathered on the oblique louver surfaces under the action of an electric field force, the dust slides into the cavity along the louver inclined surfaces under the action of cathode vibration, and the falling dust is not influenced by smoke gas flow because no gas flow flows in the cavity in the horizontal direction, so that the cathode is vibrated to clean dust without generating raise dust.

The skeleton is a flat steel with a certain thickness, and the further optimized skeleton can be a square pipe or a round pipe and can also be a dust collection body.

The discharge tip, the dust collecting body and the framework which are further optimized can be integrated, the special equipment is rolled into a single piece, and the two pieces are coupled and welded into a whole.

4 multi-tooth discharge prickles are welded on the cross section of the discharge prickle welded on the dust collection body, and the tooth shape, the tooth number, the tooth-to-tooth space and the like are customized according to the smoke dust characteristics.

Further optimization, the adaptive spike type of discharge intensity can be configured according to the specific resistance of the dust, the dust concentration, the charge characteristics and the like, including but not limited to: the length of the prickles, the number of the prickles, the sharpness of the sharp ends of the prickles, the length of the upper and lower adjacent intervals and the like.

Further optimization, the discharge prickles 1 can be single or can be punched by a steel belt in a connecting manner.

The effective length of the dust-collecting cathode wire is the same as that of a polar plate, the width of the dust-collecting cathode wire is about 1/2 of an anode plate, and the dust-collecting area of a cathode wire is equivalent to that of an anode plate.

Drawings

FIG. 1 is a front view of the structure of the present invention.

FIG. 2 is a schematic top view of the structure of the present invention.

In the figure: 1 discharge prickle, 2 skeleton, 3 dust collector, 4 dust chamber.

Detailed Description

A dust collecting type cathode wire of an electric dust collector comprises discharge prickles 1, a framework 2, a dust collecting body 3 and a dust falling cavity 4.

In the figure, the discharge prickle 1 is punched by a special die, can be a single body, can also be made into a connected structure, and is welded on the dust collection body 3.

In the figure, the framework 2 is a round pipe, can also be a square pipe or a steel plate, has the function of serving as a framework and is connected with the cathode frame up and down, and two ends of the framework are respectively provided with a round hole for assembling a connecting bolt.

In the figure, the dust collection body 3 is punched and rolled by special equipment, the dust collection body 3 is of a permeable structure, the air holes are rhombic, triangular or other shapes, the stems between the holes have certain width and inclination, and each cathode line is formed by splicing and welding two dust collection bodies in a mirror image manner.

The two dust collecting bodies 3 form a dust falling cavity 4, no airflow in the horizontal direction flows in the dust falling cavity 4, dust entering the cavity cannot be taken away along with the airflow, and the dust can only flow in the cavity from top to bottom under the action of gravity and electric field force, so that dust can be removed without flying dust.

The dust collection body 3 and the framework 2 are welded and combined into a whole, the dust collection area of the combined dust collection type cathode wire can be equivalent to the dust collection area of an anode plate, and each dust collection area is equivalent to the dust collection area of one anode plate.

When the dust collection type cathode wire is installed, the central line of the long axis of the dust collection body 3 is parallel to the anode plate of the electric dust collector, and the cathode wire is arranged in the direction parallel to the airflow direction, so that the resistance is not increased, and the maintenance channel is not occupied.

Further, for different flue gas characteristics, such as corrosivity, a corrosion-resistant material is required.

Furthermore, when replacing a known cathode line, it is necessary to check the strength of the original cathode frame, hanger, and the like.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims

1. A dust collecting type cathode wire of an electric dust collector comprises discharge prickles 1, a framework 2, a dust collecting body 3 and a dust falling cavity 4.

2. According to the claim 1, the discharge prickle 1 in the figure is punched by a special die, can be a single body, can also be made into a connected structure, and is welded on the dust collection body 3.

3. According to the claim 1, the frame 2 is a circular tube, or a square tube or a steel plate, and functions as a frame and is connected with the cathode frame up and down, and two ends of the frame are respectively provided with a round hole for assembling a connecting bolt.

4. According to the claim 1, the dust collecting body 3 is punched and rolled by special equipment, the dust collecting body 3 is of a permeable structure, the air holes are diamond-shaped, triangular or other shapes, the stems between the holes have certain width and inclination, and each cathode line is formed by splicing and welding two dust collecting bodies in a mirror image mode.

5. According to claim 1, the two dust collectors 3 form an ash falling cavity 4, no airflow in the horizontal direction flows in the ash falling cavity, so that the dust entering the cavity cannot be taken away along with the airflow, and the dust can only flow from top to bottom in the cavity under the action of gravity and electric field force, thereby realizing dust removal without raise dust.

6. According to claim 1, the dust collecting body 3 and the framework 2 are welded and combined into a whole, the dust collecting area of the combined dust collecting type cathode wire can be equivalent to the dust collecting area of the anode plate, and each dust collecting type cathode wire is equivalent to the dust collecting area of one anode plate.

7. According to the claim 1, when the dust collection type cathode wire is installed, the central line of the long axis of the dust collection body 3 is parallel to the anode plate of the electric dust collector, and the cathode wire is arranged in parallel to the airflow direction, so that the resistance is not increased, and the maintenance channel is not occupied.