CN219867950U

CN219867950U - Vertical garbage furnace vertical flue lower part ash bucket air distribution plate arrangement structure

Info

Publication number: CN219867950U
Application number: CN202320938723.0U
Authority: CN
Inventors: 时扶芃; 顾烊烊; 李明
Original assignee: Wuxi Huaguang Environment and Energy Group Co Ltd
Current assignee: Wuxi Huaguang Environment and Energy Group Co Ltd
Priority date: 2023-04-24
Filing date: 2023-04-24
Publication date: 2023-10-20
Anticipated expiration: 2033-04-24

Abstract

The utility model relates to the technical field of tail flues, in particular to a vertical flue lower ash bucket air distribution plate arrangement structure of a vertical garbage furnace, which can enable flue gas to uniformly enter a third flue, avoid the flue gas from locally scouring a superheater tube system, prolong the service life of a superheater and reduce the maintenance cost of a boiler.

Description

Vertical garbage furnace vertical flue lower part ash bucket air distribution plate arrangement structure

Technical Field

The utility model relates to the technical field of tail flues, in particular to an arrangement structure of an ash bucket air distribution plate at the lower part of a vertical flue of a vertical garbage furnace.

Background

In the vertical waste incineration waste heat boiler, the design of the ash bucket at the lower part of the second flue and the third flue is influenced by the arrangement of the fire grate and the air pipe thereof, the included angle between the front direction guard plate of the ash bucket and the water cooling wall is larger, and the ash bucket is not vertical as much as possible, as shown in the attached figure 1.

And the superheater is arranged in the third flue, and because the inclination angle of the inner wall of the ash bucket is large, the flue gas is easy to generate uneven flue gas at the turning part of the second flue and the third flue, so that the flue gas in the superheater area below is biased, the local flushing of the superheater pipe system is serious, the service life of the superheater is influenced, and the maintenance cost of the boiler is increased.

Disclosure of Invention

In order to solve the problems that the traditional superheater tube system in the third flue is easy to be subjected to local scouring of uneven smoke, the service life of the superheater is influenced, and the maintenance cost of the boiler is increased, the utility model provides a vertical dust hopper air distribution plate arrangement structure at the lower part of the vertical flue of a garbage furnace, which can enable smoke to uniformly enter the third flue, avoid the local scouring of the superheater tube system by the smoke, prolong the service life of the superheater, and reduce the maintenance cost of the boiler.

The technical scheme is as follows: the utility model provides a vertical garbage furnace vertical flue lower part ash bucket air distribution plate arrangement structure, its lower part ash bucket including setting up in second flue and third flue below, its characterized in that, the second flue with support suspension pipe connection through interval arrangement between the side water cooled wall lower header of third flue both sides, be fixed with the air distribution plate of evenly arranging along the horizontal direction on the support suspension pipe.

The side water-cooled wall lower header is further characterized in that the surface of the side water-cooled wall lower header is not perforated and is welded with a pipe joint corresponding to the supporting hanging pipe;

the air distribution plate is formed by splicing folded plates with bending at two ends;

an ear plate is welded on the supporting suspension pipe, the upper part of the folded plate is connected with the ear plate through a first bolt and a first nut, and a backing plate with the thickness corresponding to the ear plate and the height corresponding to the folded plate is arranged between the adjacent folded plates;

the backing plate is provided with a round hole, the bending section of the folded plate is provided with a U-shaped hole, and a second bolt penetrates through the round hole and the U-shaped hole and is in threaded connection with a second nut;

the first air distribution plate is arranged below the partition walls of the second flue and the third flue.

After the utility model is adopted, the upper part of the ash bucket at the lower part is provided with the uniformly arranged suspended air distribution plate, so that the flue gas from the second flue is separated by the air distribution plate after being diverted through the ash bucket wall, and the flue gas uniformly vertically enters the third flue upwards, so that the local flushing of a superheater tube system is not caused, the service life of the superheater is prolonged, and the maintenance cost of the boiler is reduced; further, the backing plate between the adjacent folded plates can slide relatively, the thermal expansion amount can be absorbed, the deformation of the plate is reduced, the service life of the air distribution plate is prolonged, in addition, the air distribution plate can be pertinently replaced by the bolt connection, the plate with serious corrosion or deformation is not required to be scrapped, the overhaul and replacement are convenient, and the overhaul cost is saved.

Drawings

FIG. 1 is a schematic diagram of a prior art structure;

FIG. 2 is a schematic diagram of the structure of the present utility model;

FIG. 3 is a front view of the lower ash bucket;

FIG. 4 is an enlarged schematic view of the portion I of FIG. 3;

FIG. 5 is a side view of the lower ash bucket;

FIG. 6 is an enlarged schematic view of the portion II of FIG. 5;

fig. 7 is an enlarged schematic view at iii in fig. 5.

Detailed Description

As shown in fig. 2 to 7, the lower ash bucket air distribution plate arrangement structure of the vertical flue of the vertical garbage furnace comprises lower ash buckets 3 arranged below a second flue 1 and a third flue 2, a superheater 4 is arranged in the third flue 2, side water-cooled wall lower headers 5 on two sides of the second flue 1 and the third flue 2 are connected through supporting hanging pipes 6 which are arranged at intervals, air distribution plates 7 which are uniformly arranged along the horizontal direction are fixed on the supporting hanging pipes 6, the lengths and the numbers of the air distribution plates can be adjusted according to the width and the depth of the lower ash buckets 3, uniform air distribution is ensured, in the embodiment, three air distribution plates 7 are arranged, and according to the inner wall of the lower ash bucket 3, two lengths on two sides are shorter, and the length in the middle is longest.

In order to install and support the hanging pipe 6, the pipe joints 8 are welded on the surface of the side water-cooled wall lower header 5, the side water-cooled wall lower header 5 is not perforated, and two ends of the supporting hanging pipe 6 are respectively welded with the pipe joints 8 on the side water-cooled wall lower headers 5 at two sides.

The air distribution plate 7 is formed by splicing folded plates 9 with bending at two ends, and the concrete installation structure is as follows:

the ear plate 10 is welded on the support hanging pipe 6, the upper part of the folded plate 9 is fixedly connected with the ear plate 10 through the first bolt 11 and the first nut 12, the base plate 13 with the thickness corresponding to the ear plate 10 and the height corresponding to the folded plate 9 is arranged between the adjacent folded plates 9, the base plate 13 is used for filling gaps below the ear plate 10, the round holes are formed in the base plate 13 due to the fact that the air distribution plate 7 is heated to expand, a welded structure is not adopted between the base plate 13 and the folded plate 9, U-shaped holes are formed in the bending section of the folded plate 9, the second bolt penetrates through the round holes and the U-shaped holes and is in threaded connection with the second nut, and therefore relative movement can occur between the base plate 13 and the folded plate 9 to absorb expansion amount, deformation of the plate is reduced, and the service life of the air distribution plate 7 is prolonged.

Because the air distribution plate 7 adopts the bolt connection structure, when one of the air distribution plates is corroded or severely deformed, the corresponding bolt and nut are screwed off, the folded plate 9 at the position is replaced in a targeted manner, the overhaul and the replacement are convenient, the complete scrapping and the replacement are not needed, and the cost is saved.

In order to achieve even air distribution better, the first air distribution plate 7 is arranged below the partition walls 16 of the second flue 1 and the third flue 2. In the figure, 14 is a front and rear partition wall water-cooled wall lower header. 15 is a tube embedded part for welding the ear plate.

The structure of the utility model can improve the flue gas deflection condition of the high-temperature superheater area in the third flue, considers the thermal expansion of the air distribution plate structure, is convenient to install and overhaul, ensures the stable operation of the boiler, reduces the overhaul frequency of the explosion tube of the boiler, and can adopt the novel design when designing the boiler.

Claims

1. The utility model provides a vertical garbage furnace vertical flue lower part ash bucket air distribution plate arrangement structure, its lower part ash bucket including setting up in second flue and third flue below, its characterized in that, the second flue with support suspension pipe connection through interval arrangement between the side water cooled wall lower header of third flue both sides, be fixed with the air distribution plate of evenly arranging along the horizontal direction on the support suspension pipe.

2. The arrangement structure of the ash bucket air distribution plate at the lower part of the vertical flue of the vertical garbage furnace according to claim 1, wherein the surface of the side water-cooled wall lower header is not perforated and a pipe joint corresponding to the supporting hanging pipe is welded.

3. The arrangement structure of the ash bucket air distribution plate at the lower part of the vertical flue of the vertical garbage furnace according to claim 1, wherein the air distribution plate is formed by splicing folded plates with bending at two ends.

4. The arrangement structure of the ash bucket air distribution plate at the lower part of the vertical flue of the vertical garbage furnace according to claim 3, wherein the ear plates are welded on the supporting hanging pipe, the upper parts of the folded plates are connected with the ear plates through the first bolts and the first nuts, and the backing plates with the thickness corresponding to the ear plates and the height corresponding to the folded plates are arranged between the adjacent folded plates.

5. The arrangement structure of the ash bucket grid plate at the lower part of the vertical flue of the vertical garbage furnace according to claim 4, wherein a round hole is formed in the base plate, a U-shaped hole is formed in a bending section of the folded plate, and a second bolt penetrates through the round hole and the U-shaped hole and is in threaded connection with a second nut.

6. The vertical waste stove vertical flue lower ash bucket air distribution plate arrangement structure according to claim 1, wherein a first air distribution plate is arranged below the partition walls of the second flue and the third flue.