CN214052107U

CN214052107U - Flue gas isolating device

Info

Publication number: CN214052107U
Application number: CN202022087272.3U
Authority: CN
Inventors: 黎付军
Original assignee: Foshan Huaxing Glass Co ltd
Current assignee: Foshan Huaxing Glass Co ltd
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2021-08-27
Anticipated expiration: 2030-09-22

Abstract

The utility model discloses a flue gas off device, including cutting off barrel and gas pocket, cut off barrel upper portion and be connected with insulating vase bottom, its lower part with flue gas passageway intercommunication, its inner chamber with dust remover girder incasement chamber is isolated each other, gas pocket circumference equipartition in on cutting off the wall of barrel, and be located the outside of dust remover girder case. Adopt the utility model discloses, can prevent flue gas in the dust remover effectively to get into insulator porcelain bottle and dust remover girder case, avoid insulator porcelain bottle, the electrically conductive burst of insulator porcelain post to split the damage, ensure dust remover electric field steady operation, simultaneously the utility model discloses still have simple structure, install reliable and stable advantage.

Description

Flue gas isolating device

Technical Field

The utility model relates to a glass production electrostatic precipitator especially relates to a flue gas off device.

Background

In the daily glass industry, the main pollutants treated by the waste gas of the industrial kiln are as follows: sulfur dioxide, nitrogen oxides, dust. The electrostatic precipitator is mainly used for treating dust of tail gas of a glass kiln for daily use.

The dust removal principle of the electrostatic dust collector is as follows: the electric dust collector ionizes smoke by using a high-voltage electric field, dust charges in the smoke are separated from the smoke under the action of the electric field force, and dust directionally moves and gathers on a dust collecting plate and falls off an ash bucket under the action of vibration, so that the effect of collecting and removing dust is achieved.

The electric field of the dust remover consists of a discharge electrode (cathode) and a dust collecting electrode (anode), the cathode of the dust remover is hung in the electric field of the dust remover through an insulating part (such as an insulating porcelain insulator and an insulating porcelain column) so as to be not in contact with the dust remover body or the anode, the discharge electrode has the highest voltage of 7.2 kilovolts and the highest current of 600mA when working, if the dust remover body or the anode plate is in contact with the cathode, conduction is generated to form short circuit, the electric field cannot run, so the insulating part of the dust remover bearing the cathode cannot be damaged, and otherwise, the normal running of the electric field is directly influenced.

The main factors causing the damage of the insulator are: 1. conducting and cracking the insulating part by accumulated dust; 2. the temperature difference between the inner side and the outer side of the porcelain insulator is too large, so that the porcelain insulator is condensed, creepage and cracked; 3. the insulation is heated unevenly and bursts.

Referring to fig. 2, the prior art has the insulator 3 'for isolating the flue gas in the dust collector installed in the girder box 5' of the dust collector, and the external hot air is introduced into the girder box 5 'of the dust collector to heat and preserve the temperature of the insulator 3', and after entering the girder box 5 'of the dust collector, the hot air will enter the insulator 3' from the air port at the upper part of the insulator 3 ', and under the action of the air pressure, the hot air enters the flue gas channel 4' to be mixed with the flue gas. Because the flue gas in the flue gas channel 4 ' can flow into the inner side of the porcelain insulator 3 ' under the fluctuation of the air flow and even pass through the inner side of the porcelain insulator 3 ' (especially when the porcelain insulator 3 ' is damaged), the flue gas enters the crossbeam box 5 ' of the dust remover, and the porcelain insulator 3 ' or the porcelain insulator 7 ' is cracked.

At present, an insulating porcelain insulator for isolating flue gas of a dust remover in the industry is arranged in a girder box of the dust remover, and a cathode hanging rod penetrates through a girder box of the dust remover to enter a flue gas channel of the dust remover. The outside adds hot-blast logical dust remover girder box and heats the heat preservation to insulating porcelain bottle, and the hot-blast air that gets into dust remover girder box also can get into insulating porcelain bottle from insulating porcelain bottle upper portion air inlet, sweeps the back to insulating porcelain bottle inboard, and hot-blast entering is mixed with the flue gas in the flue gas passageway. Due to the fluctuation of the flue gas flow in the dust remover, the flue gas sometimes gushes into the inner side of the porcelain insulator and even passes through the inner side of the porcelain insulator (especially after the porcelain insulator is damaged) to enter the girder box of the dust remover. This results in: 1. conducting and cracking ash deposited on the inner side of the insulating porcelain bottle; 2. the flue gas enters a crossbeam box of the dust remover to cause the insulating porcelain columns to be cracked after dust is accumulated; 3. the temperature of the inner side and the outer side of the porcelain insulator is inconsistent (the temperature of the inner side is high), so that the inner side of the porcelain insulator is subjected to dewing, creepage and cracking.

Disclosure of Invention

The utility model aims to solve the technical problem that a flue gas off device is provided, prevents the flue gas in the dust remover effectively and gets into insulating vase and dust remover girder case, avoids insulating vase, the electrically conductive burst of insulating vase to split the damage, ensures the dust remover electric field steady operation.

The utility model discloses simple structure still has, the reliable and stable advantage of installation.

In order to solve the technical problem, the utility model provides a flue gas off device for flue gas in the prevention flue gas passageway gets into insulating vase or dust remover girder case, including cutting off barrel and gas pocket, cut off the barrel and be hollow cylinder, its upper portion with insulating vase bottom is connected, its lower part with flue gas passageway intercommunication, its inner chamber with dust remover girder incasement chamber is isolated each other.

The air holes are circumferentially arrayed and evenly distributed on the side wall of the partition cylinder body and are positioned outside the girder box of the dust remover.

The flue gas channel is located under the dust remover girder box, an insulation can is arranged over the dust remover girder box, and the insulating porcelain insulator is located in an inner cavity of the insulation can.

The upper part of the heat insulation box is provided with an opening communicated with an external heating air channel, and the lower part of the heat insulation box is hermetically connected with the dust remover girder box.

The upper end and the lower end of the partition cylinder body respectively penetrate through the top surface and the bottom surface of the dust remover girder box.

The partition cylinder is fixed on the top surface and the bottom surface of the dust remover girder box in a welding mode.

The partition cylinder is a cylindrical cylinder and is vertically fixed right below the insulating porcelain bottle, and the diameter of the partition cylinder is equal to that of the bottom of the insulating porcelain bottle.

The partition cylinder body is a high-temperature-resistant thickened seamless steel pipe, and the wall thickness of the partition cylinder body is more than 8 mm.

Wherein the number of the air holes is at least 4.

The utility model discloses a theory of operation and beneficial effect as follows:

1. the utility model discloses the below installation off device of insulating vase, and will be former the heating heat preservation function of dust remover girder case shifts to the insulation can directly over the dust remover girder case. Hot air is blown in from the upper opening of the heat insulation box and enters the partition cylinder body through the air holes, at least 4 air holes are formed in the partition cylinder body, and the air holes are circumferentially and uniformly distributed on the wall surface of the partition cylinder body, so that the hot air can be uniformly blown into the partition cylinder body. Under the effect of air pressure, hot air is continuously blown into the partition cylinder, and the partition cylinder penetrates through the dust remover girder box and is communicated with the flue gas channel, so that the hot air can continuously apply air pressure to the flue gas channel to form an air seal effect, and the flue gas in the flue gas channel can only flow at the bottom of the partition cylinder, so that the flue gas in the flue gas channel is effectively prevented from entering the inner side of the porcelain insulator or the heat insulation box, the conductive cracking damage of the insulating porcelain insulator and the insulating porcelain insulator is avoided, the stable operation of an electric field of the dust remover is powerfully guaranteed, the service cycle of the insulating porcelain insulator is prolonged, and the production cost is saved.

2. The smoke isolating device only consists of the isolating cylinder and the air holes, so that the smoke isolating device has the advantage of simple structure. And simultaneously, because cut off the barrel and be high temperature resistant thickening seamless steel pipe, its with dust remover girder case adopts welded connection, moreover cut off the barrel and be located under the insulating vase, effectively bearing insulating vase, consequently the utility model has the advantages of the installation is reliable and stable.

Drawings

FIG. 1 is a schematic structural view of the flue gas blocking device of the present invention;

fig. 2 is a schematic structural diagram of a flue gas partition device of a conventional dust remover.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings. Only this statement, the utility model discloses the upper and lower, left and right, preceding, back, inside and outside etc. position words that appear or will appear in the text only use the utility model discloses an attached drawing is the benchmark, and it is not right the utility model discloses a concrete restriction.

Referring to fig. 1, the utility model provides a flue gas blocking device 1 for preventing flue gas in a flue gas channel 4 from entering an insulating porcelain insulator 3 or a dust remover girder box 5, which is characterized in that the flue gas blocking device comprises a blocking cylinder 11 and an air hole 12, wherein the blocking cylinder 11 is a hollow cylinder, the upper part of the blocking cylinder is connected with the bottom of the insulating porcelain insulator 3, the lower part of the blocking cylinder is communicated with the flue gas channel 4, and the inner cavity of the blocking cylinder is isolated from the inner cavity of the dust remover girder box 5; the air holes 12 are circumferentially arrayed and uniformly distributed on the wall surface of the partition cylinder 11 and are positioned outside the top surface of the dust remover girder box 5.

Preferably, the partition cylinder 11 is cylindrical, the air holes 12 are circumferentially and uniformly distributed around the partition cylinder 11, hot air can enter the partition cylinder 11 from the air holes 12, and the partition cylinder 11 penetrates through the flue gas channel 4, so that under the action of hot air pressure, flue gas in the flue gas channel 4 is difficult to break through the hot air pressure and enter the insulating porcelain insulator 3 above the partition cylinder 11.

Therefore, implement the utility model discloses a principle and beneficial effect as follows:

the utility model discloses the below installation off device of insulating vase 3, and will be former the heating heat preservation function of dust remover girder case 5 shifts to insulation can 6 directly over dust remover girder case 5. Hot air is blown in from an upper opening of the heat insulation box 6 and enters the partition cylinder 11 through the air holes 12, and at least 4 air holes 12 are uniformly distributed on the wall surface of the partition cylinder 11 in the circumferential direction, so that the hot air can be uniformly blown into the partition cylinder 11. Under the atmospheric pressure effect, hot-blast continuous blow in cut off barrel 11, because cut off barrel 11 and run through dust remover girder case 5, and with flue gas channel 4 intercommunication, consequently hot-blast can last right flue gas channel 4 applys atmospheric pressure, forms "atmoseal" effect, so flue gas in the flue gas channel 4 can only cut off the bottom of barrel 11 and flow to effectively prevent the flue gas in flue gas channel 4 to get into in insulating vase 3 is inboard or insulation can 6, avoided insulating vase 3, insulating knob insulator 7 electrically conductive burst to break and damage, guarantee the dust remover electric field steady operation forcefully, prolonged insulating vase 3's life cycle simultaneously, practice thrift manufacturing cost.

The flue gas channel 4 is located under the dust remover girder box 5, the heat insulation box 6 is arranged over the dust remover girder box 5, and the insulating porcelain insulator 3 is located in an inner cavity of the heat insulation box 6. The upper part of the heat insulation box 6 is provided with an opening communicated with an external heating air channel, and the lower part of the heat insulation box is hermetically connected with the dust remover girder box 5. The upper end and the lower end of the partition cylinder 11 respectively penetrate through the top surface and the bottom surface of the dust remover girder box 5. The partition cylinder 11 is fixed on the top surface and the bottom surface of the crossbeam box 5 of the dust remover in a welding mode. The partition cylinder body 11 is a cylindrical cylinder body, is vertically fixed under the porcelain insulator 3, and has a diameter equal to the diameter of the bottom of the porcelain insulator 3, preferably, the diameter of the partition cylinder body 11 is at least 500mm, and after the cathode hanging rod 2 passes through the center of the partition cylinder body 11, the distance between the cathode hanging rod 2 and the wall surface of the partition cylinder body 11 can reach more than 230mm, so that the working distance requirement of a cathode line of the dust remover can be effectively guaranteed.

The partition cylinder body 11 is a high-temperature-resistant thickened seamless steel pipe, the wall thickness of the partition cylinder body is at least 8mm, the upper surface of the partition cylinder body 11 is ensured not to be thermally deformed after welding, and the partition cylinder body can directly bear the insulating porcelain insulator 3 of the dust remover. The number of the air holes 12 is at least 4, and the air holes are respectively arranged in four directions of the partition cylinder body 11, so that hot air in the heat preservation box 6 can be blown in from four directions, and a better air sealing effect is formed.

Preferably, the partition cylinder 11 is arranged below the porcelain insulator 3, and the length of the partition cylinder 11 reaches more than 1500mm, so that a sufficient space is ensured between the flue gas and the porcelain insulator 3, and even if flue gas flow fluctuation occurs in the dust remover, the flue gas cannot enter the inner side of the porcelain insulator 3 or the heat insulation box 6.

Therefore, the utility model discloses still have following beneficial effect:

the smoke isolating device 1 is composed of the isolating cylinder 11 and the air hole 12, so that the smoke isolating device has the advantage of simple structure. And simultaneously, because cut off barrel 11 and be high temperature resistant thickening seamless steel pipe, its with dust remover girder case 5 adopts welded connection, moreover cut off barrel 11 and be located under the insulator 3, can effectively bearing insulator 3, consequently the utility model has the advantages of the installation is reliable and stable.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and decorations can be made without departing from the principle of the invention, and these modifications and decorations are also regarded as the protection scope of the present invention.

Claims

1. A flue gas isolating device is used for preventing flue gas in a flue gas channel from entering an insulating porcelain insulator or a dust remover girder box and is characterized by comprising an isolating cylinder and an air hole, wherein the isolating cylinder is a hollow cylinder, the upper part of the isolating cylinder is connected with the bottom of the insulating porcelain insulator, the lower part of the isolating cylinder is communicated with the flue gas channel, and the inner cavity of the isolating cylinder is mutually isolated from the inner cavity of the dust remover girder box;

2. The flue gas partition device of claim 1, wherein the flue gas channel is located right below the deduster girder box, an insulation box is arranged right above the deduster girder box, and the insulation porcelain bottle is located in an inner cavity of the insulation box.

3. The flue gas partition device of claim 2, wherein the heat-insulating box is provided at an upper portion thereof with an opening communicating with an external heating air passage, and at a lower portion thereof with the dust collector girder box in a sealing connection.

4. The flue gas partition device according to claim 1, wherein the upper end and the lower end of the partition cylinder respectively penetrate through the top surface and the bottom surface of the dust collector girder box.

5. The flue gas partition device according to claim 1, wherein the partition cylinder is fixed to the top and bottom surfaces of the girder box of the dust collector by welding.

6. The smoke partition device according to claim 1, wherein the partition cylinder is a cylindrical cylinder which is vertically fixed right below the porcelain insulator and has a diameter equal to the diameter of the bottom of the porcelain insulator.

7. The flue gas partition device of claim 1, wherein the partition cylinder is a high temperature resistant thickened seamless steel tube, and the wall thickness of the partition cylinder is more than 8 mm.

8. The flue gas isolation apparatus of claim 1 wherein the number of said air holes is at least 4.