CN212263557U

CN212263557U - Ion wind fog droplet collection device

Info

Publication number: CN212263557U
Application number: CN202020557107.7U
Authority: CN
Inventors: 沙浩男; 王佳典; 刘云亮; 郭晨; 赵思聪; 朱瑞
Original assignee: 703th Research Institute of CSIC
Current assignee: 703th Research Institute of CSIC
Priority date: 2020-04-15
Filing date: 2020-04-15
Publication date: 2021-01-01
Anticipated expiration: 2030-04-15

Abstract

An ion wind fog droplet collecting device relates to a fog droplet collecting technology, and aims to solve the problem that a common dehumidification method is not suitable for removing humidity at an outlet of a chimney. The novel collecting barrel is formed by encircling a plurality of rectangular flat plates, and the cross section of the collecting barrel is a regular polygon; the insulating support is arranged above the collecting barrel, the discharge electrode is vertically suspended under the insulating support, and the discharge electrode is positioned at the axis of the collecting barrel; the discharge electrode is connected with the output end of the high-voltage power supply through a high-voltage cable, and the collecting barrel is grounded; a plurality of discharge metal wires are respectively vertically fixed on the metal bracket; a plurality of bulges are arranged on the inner surface of the collecting barrel and are evenly arranged in an array manner. The air dehumidification device has the beneficial effects that the ion wind formed by the high-voltage electric field is utilized to collect the fog drops in the air, the concentration of the liquid drops in the air is greatly reduced, the dehumidification efficiency is high, and the structure is simple.

Description

Ion wind fog droplet collection device

Technical Field

The utility model relates to a mist liquid drop trapping technology.

Background

The installed capacity of a thermal power generating unit is very large in China, and most of the thermal power generating units are provided with flue gas desulfurization devices in order to reduce pollutant emission caused by coal combustion; at present, wet flue gas desulfurization is mainly adopted at home, and the method inevitably improves the flue gas humidity, and when wet flue gas at the outlet of a chimney enters a low-temperature environment, the wet flue gas is condensed to form wet smoke plume, so that visual pollution is caused; the wet flue gas diffusion effect is relatively poor, and the landing concentration of pollutants near a chimney can be increased; in addition, the water resource crisis is aggravated by the emission of the wet flue gas, and the resulting increase in air humidity may also induce the haze phenomenon to some extent.

The common dehumidification methods at present comprise a condensation method, an absorption method and a membrane method for dehumidification; wherein, the condensation method has complex system, high cost, huge equipment and easy scaling and corrosion of a heat exchanger; the absorption method adopts high-concentration salt solution, has high requirements on anticorrosive materials, and is mainly applied to the field of air conditioners; the membrane dehumidification technology is not mature, and the reliability needs to be checked. Therefore, the common dehumidification method is not suitable for the humidity removal at the chimney outlet.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the common dehumidification method is not suitable for the humidity removal of the chimney outlet, and providing an ion wind mist droplet collection device.

The utility model relates to an ion wind mist droplet collecting device, which comprises a discharge electrode, a collecting barrel, a high-voltage power supply and an insulating bracket;

the collecting barrel is formed by encircling a plurality of rectangular flat plates, and the cross section of the collecting barrel is a regular polygon;

the insulating support is arranged above the collecting barrel, the discharge electrode is vertically suspended under the insulating support, and the discharge electrode is positioned at the axis of the collecting barrel;

the discharge electrode is connected with the output end of the high-voltage power supply through a high-voltage cable, and the collecting barrel is connected with a power ground;

the discharge electrode comprises a metal bracket and a plurality of discharge metal wires;

a plurality of discharge metal wires are respectively vertically fixed on the metal bracket;

a plurality of bulges are arranged on the inner surface of the collecting barrel and are evenly arranged in an array mode.

The utility model discloses a theory of operation does: the collecting barrel of the ion wind fog droplet collecting device is vertically fixed at the top end of a chimney outlet, a high-voltage power supply is opened, the high-voltage power supply outputs negative voltage, a discharge electrode is powered on, an electric field is formed inside the collecting barrel, air with fog droplets is introduced to the lower side of the collecting barrel, the air is rapidly ionized under the action of the electric field, ionized air is subjected to coulomb force under the action of the electric field to form ion wind from the discharge electrode to the direction of the collecting barrel, the fog droplets in the air are subjected to coulomb force and collide with the inner wall of the collecting barrel along with the flow of the ion wind, the fog droplets are attached to the inner wall of the collecting barrel to form a liquid film, and the fog droplets flow downwards due to gravity, and therefore the collection of the fog droplets in the air of.

The utility model has the advantages that the ion wind formed by the high-voltage electric field is utilized to capture the fog drops in the air, thereby greatly reducing the concentration of the liquid drops in the air; the discharge electrode is in a multi-wire electrode form, so that the electric loss per unit area can be effectively reduced; the arrangement of the bulges enhances the adhesion and condensation effect of the fog drops on the wall surface of the collecting barrel, improves the nonuniformity of an electric field in the inner space of the device, and enhances the ionization degree of air, thereby enhancing the collecting effect of the fog drops; the cross section of the collecting barrel is a regular polygon, and a plurality of ion wind mist droplet collecting devices can be used in parallel, so that the space utilization rate is greatly improved; meanwhile, the dehumidifying efficiency by utilizing the ion wind is high, the structure is simple, and the development space is very wide.

Drawings

FIG. 1 is a schematic view of an ion wind mist droplet collecting device according to a first embodiment;

FIG. 2 is a schematic perspective view of an ion wind mist droplet collecting device according to a first embodiment of the present invention;

FIG. 3 is a side view of a discharge electrode according to a second embodiment;

FIG. 4 is a top view of a discharge electrode according to a second embodiment;

fig. 5 is a schematic view of the arrangement of the protrusions on the fourth middle plate according to the embodiment.

Detailed Description

The first embodiment is as follows: the present embodiment is described with reference to fig. 1 and 2, and the ion wind mist droplet collecting device according to the present embodiment includes a discharge electrode 1, a collecting barrel 2, a high voltage power supply 3, and an insulating support 4;

the collecting barrel 2 is formed by encircling a plurality of rectangular flat plates, and the cross section of the collecting barrel 2 is a regular polygon; the rectangular flat plate is used for enabling fog drops in air to be attached to the rectangular flat plate to form a liquid film;

the insulating support 4 is arranged above the collecting barrel 2, the discharge electrode 1 is vertically suspended under the insulating support 4, and the discharge electrode 1 is positioned at the axis of the collecting barrel 2; the insulating support 4 is used for fixing the discharge electrode 1;

the discharge electrode 1 is connected with the output end of a high-voltage power supply 3 through a high-voltage cable, and the collecting barrel 2 is connected with a power ground; the discharge electrode 1 is used for discharging so as to form ion wind in the collecting barrel 2;

the discharge electrode 1 comprises a metal bracket 6 and a plurality of discharge metal wires 7;

a plurality of discharge metal wires 7 are respectively vertically fixed on the metal bracket 6;

a plurality of bulges 8 are arranged on the inner surface of the collecting barrel 2, and the bulges 8 are uniformly arranged in an array manner.

In the present embodiment, as shown in fig. 2, the cross section of the collecting vessel 2 is a regular hexagon, the length of the discharge electrode 1 is slightly smaller than the length of the bus bar of the collecting vessel 2, and the high voltage power supply 3 outputs a negative voltage of 20 kV. The collecting barrel 2 of the ion wind fog droplet collecting device is vertically fixed at the top end of a chimney outlet, a high-voltage power supply 3 is turned on, the high-voltage power supply 3 outputs negative voltage, so that a discharge electrode 1 is electrified, an electric field is formed inside the collecting barrel 2, air with fog droplets is introduced to the lower side of the collecting barrel 2, the air is rapidly ionized under the action of the electric field, ionized air is subjected to coulomb force under the action of the electric field to form ion wind from the discharge electrode 1 to the direction of the collecting barrel 2, the fog droplets in the air are subjected to coulomb force and collide with the inner wall of the collecting barrel 2 along with the flow of the ion wind, the fog droplets are attached to the inner wall of the collecting barrel 2 to form a liquid film, and the liquid film flows downwards due to gravity, so that the collection of the fog droplets in the air at the chimney.

The second embodiment is as follows: the present embodiment is described with reference to fig. 3 and 4, and is further limited to the ion wind mist droplet collecting device according to the first embodiment, in the present embodiment, the metal support 6 includes a main body metal bar, an upper cross metal bar and a lower cross metal bar;

the main body metal rod is vertically arranged at the axis of the collecting barrel 2, the upper cross-shaped metal rod is horizontally fixed at the top end of the main body metal rod, and the lower cross-shaped metal rod is horizontally fixed at the bottom end of the main body metal rod;

one ends of the discharge metal wires 7 are respectively connected to the upper cross metal bar, and the other ends of the discharge metal wires 7 are respectively connected to the lower cross metal bar.

The third concrete implementation mode: in the present embodiment, the ion wind mist droplet collecting device according to the first embodiment is further limited, and in the present embodiment, the high voltage power supply 3 outputs a negative voltage of 0 to 80 kV.

In the present embodiment, specific values of the output power of the high-voltage power supply 3 are limited.

The fourth concrete implementation mode: the present embodiment is described with reference to fig. 5, and is further limited to the ion wind mist droplet collecting device according to the first embodiment, and in the present embodiment, the protrusion 8 is a spherical protrusion or a cylindrical protrusion.

Claims

1. An ion wind mist droplet collecting device is characterized by comprising a discharge electrode (1), a collecting barrel (2), a high-voltage power supply (3) and an insulating support (4);

the collecting barrel (2) is formed by encircling a plurality of rectangular flat plates, and the cross section of the collecting barrel (2) is a regular polygon;

the insulating support (4) is arranged above the collecting barrel (2), the discharge electrode (1) is vertically suspended under the insulating support (4), and the discharge electrode (1) is positioned at the axis of the collecting barrel (2);

the discharge electrode (1) is connected with the output end of a high-voltage power supply (3) through a high-voltage cable, and the collecting barrel (2) is connected with a power ground;

the discharge electrode (1) comprises a metal bracket (6) and a plurality of discharge metal wires (7);

a plurality of discharge metal wires (7) are respectively and vertically fixed on the metal bracket (6);

a plurality of bulges (8) are arranged on the inner surface of the collecting barrel (2), and the bulges (8) are uniformly arranged in an array manner.

2. The ion wind mist droplet collection device according to claim 1, wherein the metal support (6) comprises a main body metal bar, an upper cross metal bar and a lower cross metal bar;

the main body metal rod is vertically arranged at the axis of the collecting barrel (2), the upper cross-shaped metal rod is horizontally fixed at the top end of the main body metal rod, and the lower cross-shaped metal rod is horizontally fixed at the bottom end of the main body metal rod;

one ends of the discharge metal wires (7) are respectively connected to the upper cross metal bar, and the other ends of the discharge metal wires (7) are respectively connected to the lower cross metal bar.

3. The ion wind mist droplet collecting device according to claim 1, wherein the high voltage power supply (3) outputs a negative voltage of 0-80 kV.

4. The ion wind mist droplet collection device according to claim 1, wherein the protrusions (8) are spherical protrusions or cylindrical protrusions.