CN221464351U

CN221464351U - Flue gas heat recovery device

Info

Publication number: CN221464351U
Application number: CN202322892950.7U
Authority: CN
Inventors: 王军; 舒孝政; 贲泉
Original assignee: Ezhou Hongtai Steel Co ltd
Current assignee: Ezhou Hongtai Steel Co ltd
Priority date: 2023-10-27
Filing date: 2023-10-27
Publication date: 2024-08-02
Anticipated expiration: 2033-10-27

Abstract

The utility model relates to the technical field of flue gas recycling, in particular to a flue gas heat recycling device, which comprises the following technical scheme: the flue body, the mounting groove is installed in the top intercommunication of flue body, communicating pipe is installed in the bottom intercommunication of flue body, the water pipe body is twined to the flue body outside, still includes sealed lid and brush body; the sealing cover is fixedly arranged at the bottom of the communicating pipe; the brush body is arranged in the mounting groove; wherein, the brush body external diameter size matches with flue body internal diameter size. The utility model solves the problems that in the prior art, the temperature in the flue is reduced and the cleaning of the interior of the flue is inconvenient for the device to isolate smoke dust.

Description

Flue gas heat recovery device

Technical Field

The utility model relates to the technical field of flue gas recycling, in particular to a flue gas heat recycling device.

Background

The steel making process includes electric arc furnace, induction furnace, electroslag furnace, electron beam furnace, consumable arc furnace, etc. In the electric furnace steelmaking stage, electric furnace ash production is generally completed through a plurality of procedures, and finally the electric furnace ash is captured by a bag type dust collector, so that the electric furnace ash production is completed, and the charge amount of produced furnace charge is 2% -3%. The electric furnace smoke dust is characterized by fine granularity, high concentration and certain corrosiveness, the smoke components are complex and contain combustible and explosive gas, the smoke temperature is high, the fluctuation range is large, and the smoke temperature can reach 1200 ℃.

Chinese utility model patent: the publication number is CN216203449U, which discloses a heat recovery device for flue gas emission, which is arranged on a biomass boiler grate chimney of a biomass boiler and is used for recovering heat of smoke dust emitted by the biomass boiler grate chimney; a treatment device shell is sleeved and arranged on the outer side above the biomass boiler grate chimney; comprising the following steps: the smoke delivery port is arranged on the left side of the inner treatment seat, and a filter plate is arranged on the inner side of the smoke delivery port; the fan blades are installed on the outer side of the rotating rod at equal angles, and the installation rod is installed at the left end of the rotating rod.

In the prior art, when CN216203449U is used, the heat recovery device for exhaust of the flue gas has the same distribution structure as the outer flue pipe, and the outer flue pipe is sleeved outside the inner flue pipe, so that the flue gas can surround outside the inner flue pipe when being conveyed along the outer flue pipe, the contact time and the contact area of the flue gas and water flow in the inner flue pipe are prolonged, heat is fully conducted to the water flow, and the full recycling of the heat is realized. But device has filtered the smoke and dust in advance when using among the prior art, and then leads to flue gas temperature to appear reducing to lead to a large amount of temperature that are carried by the smoke and dust to be extravagant, simultaneously, if not set up filter equipment, then can lead to the flue gas to lead to the pipeline to appear blockking up under the long-time circumstances of using, and is difficult to carry out effective clearance, and then needs a flue gas heat recovery device to solve above-mentioned problem.

Disclosure of utility model

The utility model aims to provide a flue gas heat recovery device, which has the advantages of effectively utilizing high temperature in flue gas and facilitating the cleaning of the interior of a flue, and solves the problems that the temperature in the flue is reduced and the cleaning of the interior of the flue is inconvenient for isolating smoke dust in the device in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the flue gas heat recovery device comprises a flue body, wherein an installation groove is installed at the top of the flue body in a communicating manner, a communicating pipe is installed at the bottom end of the flue body in a communicating manner, a water pipe body is wound on the outer side of the flue body, and the flue gas heat recovery device further comprises a sealing cover and a brush body;

The sealing cover is fixedly arranged at the bottom of the communicating pipe; the brush body is arranged in the mounting groove; wherein, the brush body external diameter size matches with flue body internal diameter size.

When using a flue gas heat recovery unit among this technical scheme, the flue gas passes through flue body exhaust to at the exhaust in-process, heat the liquid in the water pipe body through the high temperature in the flue gas, under the long-time circumstances of using, flue body inner wall can appear a large amount of smoke and dust and pile up, if clear up the smoke and dust this moment, then can lead to the thermal conductivity of flue body outer wall to reduce, can install the connecting rod at the adapter sleeve top this moment, and twist the adapter sleeve, thereby make the adapter sleeve break away from threaded sleeve, and then the accessible brush body clear up the smoke and dust in the flue body through poking the connecting rod, and make the smoke and dust under the clearance fall to communicating pipe in, thereby realize the discharge to the smoke and dust through opening sealed lid.

Preferably, the flue body adopts C style of calligraphy structural design, and the flue body adopts stainless steel material design, and the both ends of flue body are installed with furnace body and denitrification facility intercommunication respectively.

Preferably, the center of the top of the mounting groove is provided with a hole and is embedded with a threaded sleeve, and the threaded sleeve is internally provided with a connecting sleeve in a threaded manner.

Preferably, a connecting rod is arranged at the top of the connecting sleeve in a threaded manner, and the diameter of the connecting rod is smaller than that of the connecting sleeve.

Preferably, flange plates are respectively arranged at two ends of the water pipe body.

Preferably, the center of the circle at the top of the brush body is fixedly connected with the bottom end of the connecting sleeve, and the outer diameter size of the brush body is matched with the inner diameter size of the communicating pipe.

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

according to the utility model, the mounting groove is formed, and the brush body is arranged in the mounting groove, so that when the device is used, the brush body can be used for cleaning the smoke dust attached to the inner wall of the flue body, and meanwhile, the communicating pipe is arranged to facilitate the discharge of the smoke dust, so that the effect of effectively utilizing the high temperature in the flue gas and facilitating the cleaning of the interior of the flue is achieved.

Drawings

FIG. 1 is a schematic cross-sectional elevation view of the present utility model;

FIG. 2 is a schematic view of the enlarged partial structure of FIG. 1 according to the present utility model;

fig. 3 is a schematic elevational view of the present utility model.

In the figure: 1. sealing cover; 2. a communicating pipe; 3. a water pipe body; 4. a flue body; 5. a mounting groove; 6. a connecting rod; 7. connecting sleeves; 8. a brush body; 9. a threaded sleeve.

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.

Examples

As shown in fig. 1,2 and 3, one embodiment of the present utility model provides: the flue gas heat recovery device comprises a flue body 4, wherein an installation groove 5 is arranged at the top of the flue body 4 in a communicating manner, a communicating pipe 2 is arranged at the bottom end of the flue body 4 in a communicating manner, a water pipe body 3 is wound on the outer side of the flue body 4, and the flue gas heat recovery device further comprises a sealing cover 1 and a brush body 8;

Specifically, the sealing cover 1 is fixedly arranged at the bottom of the communicating pipe 2; the brush body 8 is arranged in the mounting groove 5; wherein, the outer diameter of the brush body 8 is matched with the inner diameter of the flue body 4. Through setting up mounting groove 5 to set up brush body 8 in mounting groove 5, thereby when using, the accessible brush body 8 clear up the attached smoke and dust of flue body 4 inner wall, simultaneously, the setting up of communicating pipe 2 also can make the discharge of smoke and dust more convenient, and then has reached the effect of effectively utilizing the interior high temperature of flue and conveniently carrying out inside clearance to the flue.

Further, the flue body 4 adopts a C-shaped structural design, the flue body 4 adopts a stainless steel design, and two ends of the flue body 4 are respectively communicated with the furnace body and the denitration device.

Further, a hole is formed in the center of the top of the mounting groove 5, a threaded sleeve 9 is embedded and mounted in the hole, and a connecting sleeve 7 is mounted in the threaded sleeve 9 in a threaded manner. The connecting rod 6 is arranged on the top of the connecting sleeve 7 in a threaded manner, and the diameter of the connecting rod 6 is smaller than that of the connecting sleeve 7.

Further, flanges are respectively arranged at two ends of the water pipe body 3.

Further, the center of the circle at the top of the brush body 8 is fixedly connected with the bottom end of the connecting sleeve 7, and the outer diameter size of the brush body 8 is matched with the inner diameter size of the communicating pipe 2.

When the smoke gas is discharged through the flue body 4, in the discharging process, liquid in the water pipe body 3 is heated through high temperature in the smoke gas, a large amount of smoke dust is accumulated on the inner wall of the flue body 4 under the condition of long-time use, the heat conduction efficiency of the outer wall of the flue body 4 is reduced if the smoke dust is not cleaned, the connecting rod 6 can be arranged at the top of the connecting sleeve 7 at the moment, the connecting sleeve 7 is screwed, so that the connecting sleeve 7 is separated from the threaded sleeve 9, the smoke dust in the flue body 4 can be cleaned through the brush body 8 by poking the connecting rod 6, and the cleaned smoke dust falls into the communicating pipe 2, so that the smoke dust is discharged by opening the sealing cover 1.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a flue gas heat recovery device, includes flue body (4), mounting groove (5) are installed in flue body (4) top intercommunication, communicating pipe (2) are installed in flue body (4) bottom intercommunication, flue body (4) outside winding has water pipe body (3), its characterized in that still includes:

the sealing cover (1) is fixedly arranged at the bottom of the communicating pipe (2);

the brush body (8) is arranged in the mounting groove (5);

Wherein, the outer diameter of the brush body (8) is matched with the inner diameter of the flue body (4).

2. The flue gas heat recovery device according to claim 1, wherein the flue body (4) adopts a C-shaped structural design, the flue body (4) adopts a stainless steel material design, and two ends of the flue body (4) are respectively communicated with the furnace body and the denitration device.

3. A flue gas heat recovery device according to claim 1, wherein the center of the top of the installation groove (5) is provided with a hole and is provided with a threaded sleeve (9) in an embedded manner, and the threaded sleeve (9) is internally provided with a connecting sleeve (7) in a threaded manner.

4. A flue gas heat recovery device according to claim 3, wherein the connecting rod (6) is mounted on the top of the connecting sleeve (7) by means of screw threads, and the diameter of the connecting rod (6) is smaller than that of the connecting sleeve (7).

5. A flue gas heat recovery device according to claim 1, wherein the water pipe body (3) is provided with flanges at both ends thereof.

6. The flue gas heat recovery device according to claim 1, wherein the center of the top of the brush body (8) is fixedly connected with the bottom end of the connecting sleeve (7), and the outer diameter of the brush body (8) is matched with the inner diameter of the communicating pipe (2).