CN218981924U - Cathode needle, electrostatic dust collection device and flue gas purification system - Google Patents

Abstract

The utility model relates to the technical field of electrostatic dust collection, and particularly discloses a cathode needle, an electrostatic dust collection device and a flue gas purification system. The application discloses a cathode needle, which consists of a plurality of common cathode needles (slender rods in the application), and the adjacent slender rods are fixedly connected, so that the cathode needle disclosed by the utility model can be always stable in a longer anode tube. The electrostatic dust collector and the flue gas cleaning system disclosed by the application are provided with the cathode needle, and the electrostatic dust collector and the flue gas cleaning system are provided with the cathode needle.

Description

Cathode needle, electrostatic dust collection device and flue gas purification system

Technical Field

The utility model relates to the technical field of electrostatic dust collection, in particular to a cathode needle, an electrostatic dust collection device and a flue gas purification system.

Background

The electrostatic dust collector is widely applied to various fields, part of the electrostatic dust collector adopts a plate-type electric field, and part of the electrostatic dust collector adopts a tubular electric field. In the tubular electric field, the cathode needle is disposed along the axial direction of the anode tube. In some short tubular electric fields, the columnar cathode needle can work normally, and when the length of the electric field (the length of the anode tube) is long, namely the length of the anode tube is about 1 meter or exceeds 1 meter, the columnar cathode needle in the anode tube can shake under the impact of smoke, and the electrostatic dust collector cannot work normally.

Accordingly, the prior art is still in need of improvement and development.

Disclosure of Invention

The utility model discloses a cathode needle, an electrostatic dust collection device and a flue gas purification system, which are used for solving the problem that a traditional slender cathode needle is easy to shake.

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

a cathode needle comprises three or four slender rods, and the adjacent slender rods are fixedly connected.

Preferably, the side wall of the slender rod is provided with a spike.

Preferably, the plurality of spines are provided, the spines encircle the side wall of the slender rod, and the intervals between the adjacent spines are the same.

The utility model also discloses an electrostatic dust collector, which comprises a shell and an electrostatic field arranged in the shell, wherein the shell comprises an inlet and an outlet, the electrostatic field is arranged between the inlet and the outlet, and the electrostatic field comprises:

an anode tube;

a placement frame mounted to the housing and adjacent to the anode tube; and

as described above, the cathode needle is mounted on the placement frame, and the cathode needle is disposed in the anode tube.

Preferably, two placing frames are arranged, the two placing frames are respectively arranged above and below the anode tube, and two ends of the cathode needle are respectively and fixedly connected with the two placing frames.

Preferably, the electrostatic field further comprises an insulator, one end of the insulator is fixedly connected with the shell, and the other end of the insulator is fixedly connected with the placing frame.

Preferably, a plurality of anode tubes are arranged, the cathode needles are in one-to-one correspondence with the anode tubes, and adjacent anode tubes are fixedly connected.

Preferably, the cathode needle is disposed on the axis of the anode tube.

The utility model also discloses a flue gas purification system which comprises the cathode needle or the electrostatic dust collection device.

Compared with the prior art, the utility model has the beneficial effects that:

according to the cathode needle provided by the utility model, the cathode needle is composed of three or four elongated rods, the adjacent elongated rods are fixedly connected, and after the elongated rods are fixedly connected, the cathode needle cannot shake under the blowing of smoke, so that the electrostatic dust collection device using the cathode needle can be ensured to be capable of stably collecting dust.

In addition, through setting up the spike for the discharge of cathode needle is simpler. By providing a plurality of spikes equidistant and surrounding the elongated rod, the electric field created upon discharge is more stable. The spine is formed by stamping, and the operation is simple.

The utility model also discloses an electrostatic dust collector which comprises a shell and an electrostatic field arranged in the shell, wherein the electrostatic field comprises an anode tube, a placing frame and the cathode needle, and the electrostatic dust collector has all the advantages of the cathode needle. By arranging two placing frames, the cathode needle can be firmly installed. Through setting up the insulator, avoid rack electric leakage to the casing. Through setting up a plurality of positive pole pipes for dust collecting area is bigger, thereby promotes purification efficiency. Through setting up the negative pole needle on the axis of positive pole pipe, promoted dust collection efficiency.

The utility model also discloses a flue gas purification system which comprises the cathode needle or the electrostatic dust collection device and has all the advantages of the cathode needle or the electrostatic dust collection device.

Drawings

FIG. 1 is a schematic view of a cathode needle according to an embodiment of the present utility model;

FIG. 2 is a top view of FIG. 1;

fig. 3 is a schematic structural diagram of an electrostatic precipitator according to an embodiment of the present utility model;

fig. 4 is a top view of the cross-sectional structure of fig. 3.

Description of main reference numerals: 10-shell, 11-inlet, 12-outlet, 20-electrostatic field, 21-anode tube, 22-placing rack, 23-cathode needle, 231-slender rod, 2311-spike and 24-insulator.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the present utility model, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present utility model and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.

Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present utility model will be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, the terms "mounted," "configured," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish between different devices, elements, or components (the particular species and configurations may be the same or different), and are not used to indicate or imply the relative importance and number of devices, elements, or components indicated. Unless otherwise indicated, the meaning of "a plurality" is two or more.

The technical scheme of the utility model will be further described with reference to the examples and the accompanying drawings.

Examples

The tubular electrostatic field is composed of an anode tube and a cathode needle, the electrostatic field is formed between the discharge of the cathode needle and the anode tube, and when the smoke passes through the anode tube, impurities in the smoke are adsorbed by the anode tube.

However, when the anode tube is provided in the device longer, the cathode needle to be fitted thereto also requires longer length. When the length of the cathode needle is long, such as the length of the cathode needle is about 1 meter or exceeds 1 meter, the cathode needle will shake under the impact of smoke, and the electric field is unstable.

Accordingly, the present application discloses a cathode needle which is composed of a plurality of common cathode needles (elongated rods in the present application) and fixedly connected between adjacent elongated rods, and the cathode needle disclosed herein can be maintained stable throughout a long anode tube.

Referring to fig. 1-2, the cathode needle 23 provided by the present utility model includes three elongated rods 231 forming a "pin" shape cathode needle 23, and the adjacent elongated rods 231 are fixedly connected.

Specifically, the elongated rods 231 are typically welded together.

Four elongated rods 231 may be provided, and the four elongated rods 231 form a "field" shaped cathode needle 23.

Too many elongated rods 231 are not desirable, and if too many elongated rods 231 are provided, the welding is complicated, and at this time, the cathode needle 23 has a large mass, which is inconvenient for installation.

To make the discharge of the cathode needle 23 simpler, a spike 2311 is machined on the outer wall of the elongated rod 231, and the spike 2311 is generally manufactured by punching the elongated rod 231.

Referring to fig. 1 and 2, the spikes 2311 are provided in plurality and circumferentially distributed on the side wall of the elongated rod 231. In order to make the electric discharge between the spikes 2311 and the anode tube 21 uniform, the distances between adjacent spikes 2311 are similar or identical.

Referring to fig. 3 and 4, the present utility model also discloses an electrostatic precipitator including a casing 10 and an electrostatic field 20 installed in the casing 10. The housing 10 includes an inlet 11 and an outlet 12, and an electrostatic field 20 is provided between the inlet 11 and the outlet 12, the electrostatic field 20 including an anode tube 21, a holder 22, and a cathode needle 23. The anode tube 21 is mounted in the casing 10, the placement frame 22 is mounted to the casing 10 adjacent to the anode tube 21, the cathode needle 23 is mounted on the placement frame 22, and the cathode needle 23 is disposed in the anode tube 21. When the cathode needle 23 is energized, the cathode needle 23 discharges to the anode tube 21, and impurities in the flue gas flowing through the anode tube 21 are adsorbed.

In order to increase the adsorption area (dust collection area) of the anode tubes 21, a plurality of anode tubes 21 are usually provided, and each anode tube 21 has a corresponding cathode needle 23, so that impurities in the flue gas can be adsorbed better.

The placement frame 22 and the cathode needle 23 are both made of metal, and the placement frame 22 is also of an electrified structure. In order to prevent the rack 22 from directly contacting the cabinet 10, an insulator 24 is generally provided between the rack 22 and the cabinet 10. As can be seen from comparing the positions of the insulators 24 in fig. 3 and 4, the two sides of the casing 10 are provided with protrusions, the insulators 24 corresponding to the placement frame 22 are respectively and fixedly connected to the protrusions, the two ends of the placement frame 22 are elongated rods 231, the two elongated rods 231 respectively extend out of the casing 10 and are fixedly connected to the upper portions of the insulators 24, and the insulators 24 can remarkably increase the creepage distance of high-voltage electricity, so that the electrostatic field 20 cannot leak to the casing 10.

In order to enable the cathode needle 23 to be better fixed, the two holders 22 are usually provided, and the two holders 22 are respectively disposed above and below the electrostatic field 20, and the upper and lower ends of the cathode needle 23 are fixedly connected to the upper holder 22 and the lower holder 22, respectively. After both ends of the cathode needle 23 are fixedly connected with the placement frame 22, the cathode needle 23 can keep a relatively stable posture under the impact of smoke, and then the electrostatic field 20 can be ensured to discharge normally, and the adsorption effect of impurities is ensured.

A projection is provided corresponding to the position of the holder 22 in the same manner as the holder 22 below the electrostatic field 20, and is provided at the lower portion of the casing 10. Referring to fig. 3, the top of the insulator 24 is fixedly connected to the boss, and the bottom of the insulator 24 is fixedly connected to the portion of the holder 22 extending out of the casing 10. By arranging the insulator 24 at the joint of the placing frame 22 and the casing 10, the high-voltage power communicated with the placing frame 22 can be ensured not to leak to the casing 10, and the safety in use is ensured.

Preferably, in an embodiment of the present utility model, the cathode needle 23 is disposed at the axial position of the anode tube 21, so that the electric field in the anode tube 21 is uniform, and a better adsorption effect is achieved.

The utility model also discloses a flue gas purification system which comprises the cathode needle 23 or the flue gas purification device and has all the advantages of the cathode needle 23 or the flue gas purification device.

It will be understood that equivalents and modifications will occur to those skilled in the art based on the present utility model and its spirit, and all such modifications and substitutions are intended to be included within the scope of the present utility model.

Claims (9)

1. A cathode needle, characterized in that it comprises three or four elongated rods, adjacent ones of which are fixedly connected.

2. The cathode needle of claim 1, wherein the elongated shaft has spikes disposed on a sidewall thereof.

3. The cathode needle of claim 2, wherein the plurality of spikes are provided, the spikes surrounding a sidewall of the elongated shaft, the spacing between adjacent spikes being the same.

4. The utility model provides an electrostatic precipitator device, its characterized in that includes casing and installs the electrostatic field in the casing, the casing includes entry and export, electrostatic field set up in between the entry with the export, electrostatic field includes:

an anode tube;

a placement frame mounted to the housing and adjacent to the anode tube; and

a cathode needle according to any one of claims 1-3, mounted on the rack, the cathode needle being disposed within the anode tube.

5. The electrostatic precipitator device according to claim 4, wherein two holders are provided, the two holders are disposed above and below the anode tube, respectively, and both ends of the cathode needle are fixedly connected with the two holders, respectively.

6. The electrostatic precipitator device of claim 5, wherein the electrostatic field further comprises an insulator, one end of which is fixedly connected to the casing, and the other end of which is fixedly connected to the rack.

7. An electrostatic precipitator according to claim 5, in which a plurality of anode tubes are provided, the cathode pins being in one-to-one correspondence with the anode tubes, adjacent ones of the anode tubes being fixedly connected.

8. The electrostatic precipitator device according to claim 7, wherein the cathode needle is disposed on the axis of the anode tube.

9. A flue gas cleaning system, characterized in that it comprises a cathode needle according to any one of claims 1-3 or an electrostatic precipitator device according to any one of claims 5-8.

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