CN214791244U

CN214791244U - Air preheater of heating furnace

Info

Publication number: CN214791244U
Application number: CN202120380251.2U
Authority: CN
Inventors: 关士臣; 关皓泽
Original assignee: Fushun Hongsheng Mechanical Equipment Co ltd
Current assignee: Fushun Hongsheng Mechanical Equipment Co ltd
Priority date: 2021-02-19
Filing date: 2021-02-19
Publication date: 2021-11-19
Anticipated expiration: 2031-02-19

Abstract

The utility model discloses a heating furnace air heater, advance pipe and flue gas exit tube including box, flue gas, box upper end both sides fixedly connected with air exit tube and air respectively advance the pipe, all link up in the box lower extreme both sides and seted up the flue gas mouth, be connected with the filter screen in the flue gas mouth, the equal fixedly connected with assembly piece of lower extreme on the filter screen, the assembly piece passes through the bolt fastening in the box side, and has all seted up the ring channel in the box lower extreme both sides, the flue gas advances the pipe and the equal fixedly connected with collar of flue gas exit tube. This heating furnace air heater is used for assembling the filter screen through setting up the flue gas mouth, is used for the fixed mounting ring through setting up the ring channel to the realization advances the fixed action of pipe and flue gas exit tube to the flue gas, realizes the preheating action to the heating furnace air through setting up heat conduction sheetmetal, and this heating furnace air heater can realize the swift assembly to the filter screen, effectively reduces the box internal cleaning frequency, reduces staff's degree of labour, and the practicality is high.

Description

Air preheater of heating furnace

Technical Field

The utility model relates to an air heater technical field specifically is heating furnace air heater.

Background

The air preheater is a preheating device which can improve the heat exchange performance of the boiler and reduce the heat loss. The air preheater has the function of conducting heat carried in flue gas exhausted from a flue at the tail part of the boiler to air before entering the boiler through the radiating fins so as to preheat the air to a certain temperature. The key issues affecting the performance of rotary air preheaters are air leakage, corrosion and ash blockage. When high-sulfur fuel is used, both the tubular preheater and the rotary preheater are prone to corrosion and ash blockage. The prevention measures are as follows: a heater is additionally arranged at the air inlet or hot air is adopted for recycling; the low-oxygen combustion or blended combustion additive is adopted to reduce the generation amount of SO2 gas in the flue gas; soot blowing is performed periodically to keep the heated surfaces clean.

The flue gas of air heater among the prior art imports and exports do not have filter equipment usually, and after using for a long time, its inside deposition easily needs often to wash, and staff's work degree is big, uses to have more inconvenience.

Present open heating furnace air heater, application number CN201620832320.8 carries the effect through the flow that utilizes the flue gas, erodees the deposition downwards, reduces the deposition scale deposit of flue gas, simultaneously through setting up enamel tubular air heater at the low temperature interval, can effectively prevent low temperature dew point corrosion's emergence, but this heating furnace air heater is when using, and its flue gas is imported and exported and not have filtering measure, to prior art's not enough, current design heating furnace air heater.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a heating furnace air heater to solve the current air heater flue gas exit that proposes in the above-mentioned background art and do not possess filter equipment, problem that the cleaning frequency is high.

In order to achieve the purpose, the utility model provides a following technical scheme, heating furnace air heater advances pipe and flue gas exit tube including box, flue gas, box upper end both sides fixedly connected with air exit tube and air respectively advance the pipe, all link up in the box lower extreme both sides and seted up the flue gas mouth, be connected with the filter screen in the flue gas mouth, the equal fixedly connected with assembly piece of lower extreme on the filter screen, the assembly piece passes through the bolt fastening in the box side, and has all seted up the ring channel in the box lower extreme both sides, the flue gas advances the pipe and advances the equal fixedly connected with collar of flue gas exit tube, and wherein a set of collar advances the pipe structure as an organic whole with the flue gas, and another group's collar is structure as an organic whole with the flue gas exit tube, box internal face middle part fixedly connected with baffle, the heat conduction sheetmetal is worn to be equipped with to the baffle internal fixation.

Preferably, the air outlet pipe and the air inlet pipe are communicated in the box body, and the air outlet pipe and the air inlet pipe are located above the partition plate in the horizontal position.

Preferably, the flue gas mouth is the cylindricality passageway, the filter screen is the cylindricality structure, and filter screen diameter length and flue gas mouth internal diameter length phase-match, and the flue gas mouth lies in the baffle below on horizontal position.

Preferably, the surface of the mounting ring is connected with the inner wall surface of the annular groove through a thread structure.

Preferably, the upper end and the lower end of the heat-conducting metal sheet extend to the upper end and the lower end of the partition plate respectively, and a plurality of groups of heat-conducting metal sheets are regularly arranged along the length extending direction of the partition plate.

Compared with the prior art, the beneficial effects of the utility model are that: this heating furnace air heater is used for assembling the filter screen through setting up the flue gas mouth, is used for the fixed mounting ring through setting up the ring channel to the realization advances the fixed action of pipe and flue gas exit tube to the flue gas, realizes the preheating action to the heating furnace air through setting up heat conduction sheetmetal, and this heating furnace air heater can realize the swift assembly to the filter screen, effectively reduces the box internal cleaning frequency, reduces staff's degree of labour, and the practicality is high.

Drawings

FIG. 1 is a sectional view of the front structure of the air preheater of the heating furnace of the present invention;

FIG. 2 is a schematic view of the front structure of the air preheater of the heating furnace of the present invention;

FIG. 3 is a sectional view of the local overhead structure of the air preheater of the heating furnace of the present invention;

FIG. 4 is a schematic view of the structure of the local side of the air preheater of the heating furnace of the present invention;

fig. 5 is an enlarged view of a portion a in fig. 1 of the heating furnace air preheater of the present invention.

In the figure: 1. the device comprises a box body, 2, an air outlet pipe, 3, an air inlet pipe, 4, a partition plate, 5, a flue gas port, 6, a filter screen, 7, an assembly block, 8, an annular groove, 9, a flue gas inlet pipe, 10, a flue gas outlet pipe, 11, a mounting ring, 12 and a heat conducting metal sheet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: heating furnace air preheater, including box 1, flue gas advances pipe 9 and flue gas exit tube 10, box 1 upper end both sides fixedly connected with air exit tube 2 and air enter pipe 3 respectively, the flue gas mouth 5 has been seted up in both sides of box 1 lower extreme link up, flue gas mouth 5 in-connection has filter screen 6, filter screen 6 upper and lower extreme all fixedly connected with assembly piece 7, assembly piece 7 is fixed in the box 1 side through the bolt, and set up ring channel 8 in box 1 lower extreme both sides, flue gas advances pipe 9 and flue gas exit tube 10 all fixedly connected with collar 11, one set of collar 11 and flue gas enter pipe 9 are the integral structure, another set of collar 11 and flue gas exit tube 10 are the integral structure, collar 11 surface is connected with ring channel 8 internal face through the helicitic texture, can realize the fixed action to flue gas enter pipe 9 and flue gas exit tube 10 through two sets of collar 11, box 1 internal face middle part fixedly connected with baffle 4, the inner part of the box body 1 is divided into an upper space and a lower space by a partition plate 4, an air outlet pipe 2 and an air inlet pipe 3 are communicated in the box body 1, the air outlet pipe 2 and the air inlet pipe 3 are positioned above the partition plate 4 on a horizontal position, so that air can circulate in the upper end of the box body 1, a flue gas port 5 is a cylindrical channel, a filter screen 6 is of a cylindrical structure, the diameter length of the filter screen 6 is matched with the inner diameter length of the flue gas port 5, and the flue gas port 5 is positioned below the partition plate 4 on the horizontal position, so that the filter screen 6 is convenient to assemble, the filter effect of flue gas in the flue gas port 5 can be realized by the filter screen 6, solid particles of the flue gas are reduced from entering the inner part of the box body 1, the cleaning frequency in the box body 1 is effectively reduced, a heat-conducting metal sheet 12 is fixedly arranged in the partition plate 4 in a penetrating manner, the upper end and the lower end of the heat-conducting metal sheet 12 respectively extend to the upper end and the lower end of the partition plate 4, and a plurality of groups of heat-conducting metal sheets 12 are regularly arranged along the length extending direction of the partition plate 4, the heat conduction effect in the box body 1 can be realized by arranging a plurality of groups of heat conducting metal sheets 12.

The working principle is as follows: when using this heating furnace air heater, assemble respectively in two sets of gas ports 5 with two sets of filter screens 6 earlier, and fix assembly piece 7 in 1 side of box through the bolt, thereby realize the fixed action to filter screen 6, fix respectively in two sets of ring channels 8 with two sets of collars 11 after that, advance the fixed action of pipe 9 and flue gas exit tube 10 with this realization to the flue gas, advance pipe 9 through the flue gas and input the flue gas to 1 lower extreme of box in, thereby to the heat conduction effect that has of multiunit heat conduction sheetmetal 12, preheat the air in 1 upper end of box through heat conduction sheetmetal 12, be this heating furnace air heater working process above.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. Heating furnace air heater advances pipe (9) and flue gas exit tube (10), its characterized in that including box (1), flue gas: an air outlet pipe (2) and an air inlet pipe (3) are respectively fixedly connected with two sides of the upper end of the box body (1), smoke ports (5) are respectively arranged in two sides of the lower end of the box body (1) in a penetrating way, a filter screen (6) is connected in the smoke port (5), the upper end and the lower end of the filter screen (6) are fixedly connected with assembling blocks (7), the assembling blocks (7) are fixed on the side surface of the box body (1) through bolts, and the two sides of the lower end of the box body (1) are both internally provided with annular grooves (8), the flue gas inlet pipe (9) and the flue gas outlet pipe (10) are both fixedly connected with mounting rings (11), wherein a set of collar (11) advances pipe (9) structure as an organic whole with the flue gas, another set of collar (11) advances pipe (10) structure as an organic whole with the flue gas, box (1) internal wall middle part fixedly connected with baffle (4), heat conduction sheetmetal (12) are worn to be equipped with to baffle (4) internal fixation.

2. A heater air preheater according to claim 1, wherein: the air outlet pipe (2) and the air inlet pipe (3) are communicated in the box body (1), and the air outlet pipe (2) and the air inlet pipe (3) are located above the partition plate (4) in the horizontal position.

3. A heater air preheater according to claim 1, wherein: flue gas mouth (5) are the cylindricality passageway, filter screen (6) are the cylindricality structure, and filter screen (6) diameter length and flue gas mouth (5) internal diameter length phase-match, and flue gas mouth (5) are located baffle (4) below on horizontal position.

4. A heater air preheater according to claim 1, wherein: the surface of the mounting ring (11) is connected with the inner wall surface of the annular groove (8) through a thread structure.

5. A heater air preheater according to claim 1, wherein: the upper end and the lower end of the heat-conducting metal sheet (12) extend to the upper end and the lower end of the partition plate (4) respectively, and a plurality of groups of heat-conducting metal sheets (12) are regularly arranged along the length extending direction of the partition plate (4).