CN211372392U

CN211372392U - Novel feed tube structure

Info

Publication number: CN211372392U
Application number: CN201921958166.9U
Authority: CN
Inventors: 周翔; 孙晶晶; 毛军华; 景磊; 陆晓焰
Original assignee: Wuxi Huaguang Environment and Energy Group Co Ltd
Current assignee: Wuxi Huaguang Environment and Energy Group Co Ltd
Priority date: 2019-11-14
Filing date: 2019-11-14
Publication date: 2020-08-28
Anticipated expiration: 2029-11-14

Abstract

The utility model relates to a circulating fluidized bed boiler feed pipe technical field specifically is a novel feed pipe structure, and it can guarantee the smooth feeding of fuel such as dregs of paper and living beings, the anti-cluster phenomenon of flue gas can not appear, and it includes the feed pipe of slope, the feeding straight tube is connected to the feed pipe upper end, its characterized in that, the breach is seted up to the feed pipe side, the breach outside is provided with the seal sleeve, the last wind that is provided with of seal sleeve imports.

Description

Novel feed tube structure

Technical Field

The utility model relates to a circulating fluidized bed boiler feed pipe technical field specifically is a novel feed pipe structure.

Background

With the increasingly strict national requirements on pollutant emission and the gradually increasing demand of power station boilers and industrial boilers on clean energy technology, the circulating fluidized bed combustion technology is receiving more and more attention as an advanced clean and efficient combustion utilization technology of low-grade fuels, particularly paper residues and biomass fuels, and is rapidly developed in recent years.

The feeding pipe is an important component in the circulating fluidized bed boiler for blending and burning the paper slag and the circulating fluidized bed boiler for pure burning the biomass, and the feeding pipe is mainly used for ensuring that lighter fuels such as the paper slag, the biomass and the like can smoothly enter a hearth of the boiler for burning.

Because the furnace pressure is the malleation in the circulating fluidized bed boiler normal operating, and paper sediment and biomass fuel weight are lighter, other debris that can appear when the batcher in time clears up the feeding for the convenience also can not make airtight structure. Thereby causing that the fuel is difficult to enter the boiler hearth to burn smoothly by the self gravity. But also can cause the reverse cross of the smoke in the hearth to cause safety accidents.

Disclosure of Invention

In order to solve current paper sediment and biomass fuel feeding difficulty, the problem of flue gas anti-cluster in the furnace appears easily, the utility model provides a novel feed tube structure, it can guarantee the smooth feeding of fuel such as paper sediment and living beings, the flue gas anti-cluster phenomenon can not appear.

The technical scheme is as follows: the utility model provides a novel feed pipe structure, its feed pipe including the slope, the feeding straight tube is connected to the feed pipe upper end, a serial communication port, the breach is seted up to the feed pipe side, the breach outside is provided with sealing sleeve, the last wind that is provided with of sealing sleeve imports.

The feeding pipe is further characterized by comprising an upper feeding pipe, a middle feeding pipe and a lower feeding pipe which are connected in sequence, wherein a first opening is formed in the upper end of the middle feeding pipe, the upper end of the upper feeding pipe is connected with the feeding straight pipe, the lower end of the upper feeding pipe extends into the middle feeding pipe and a gap is reserved between the lower end of the upper feeding pipe and the inner wall of the first opening, the lower end of the upper feeding pipe and the inner wall of the first opening are fixed in a spot welding mode, a second opening is formed in the upper end of the lower feeding pipe, the lower end of the middle feeding pipe extends into the lower feeding pipe and a gap is reserved between the lower end of the middle feeding pipe and the inner wall of the second opening, the lower end of the middle feeding pipe and the inner wall of the second opening are fixed in a spot welding mode, and primary air;

the size of a primary air inlet at the first opening is smaller than that of a primary air inlet at the second opening;

the lower feeding pipe comprises a lower front feeding pipe and a lower rear feeding pipe, the lower rear feeding pipe is a straight pipe, and the size of the lower end of the lower front feeding pipe is smaller than that of the lower rear feeding pipe;

the bottom of the feeding pipe is provided with an inclined guide plate, and a coal-seeding air pipe is arranged at the joint of the feeding pipe and the guide plate.

Adopt the utility model discloses afterwards, the air that the air inlet of seal sleeve department let in except can making the smooth feeding of fuel, can also realize sealed wind section in breach department simultaneously, the phenomenon of anti-cluster can not appear in the flue gas in furnace.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the upper portion of an intermediate feed pipe;

FIG. 3 is a schematic view of the upper portion of a lower feeder tube.

Detailed Description

See fig. 1, fig. 2, and fig. 3, a novel feed pipe structure, which includes an inclined feed pipe, wherein the upper end of the feed pipe is connected with a straight feed pipe 1, a notch 2 is formed in the side surface of the feed pipe, a sealing sleeve is arranged outside the notch 2, and a primary air inlet 3 is formed in the sealing sleeve.

Concretely, the feeding pipe comprises an upper feeding pipe 4, a middle feeding pipe 5 and a lower feeding pipe 6 which are connected in sequence, the upper end of the middle feeding pipe 5 is provided with a first opening, the upper end of the upper feeding pipe 4 is connected with a feeding straight pipe 1, the lower end of the upper feeding pipe 4 extends into the middle feeding pipe 5 and forms a gap 2 with the first opening inner wall, the lower end of the upper feeding pipe 4 is fixed with the first opening inner wall through spot welding, the upper end of the lower feeding pipe 6 is provided with a second opening, the lower end of the middle feeding pipe 5 extends into the lower feeding pipe 6 and forms a gap 2 with the second opening inner wall, the lower end of the middle feeding pipe 5 and the second opening inner wall are fixed through spot welding, primary air inlets 3 are respectively arranged on the first opening side wall and the second opening side wall, wherein, small holes are respectively arranged on the first opening wall and the second opening wall for the convenience of spot welding, the upper feeding pipe 4, The bottom of the middle feeding pipe 5 is provided with a block penetrating through the small hole, the small hole is fixed by electric welding on the outside and sealed, and two points are generally welded by spot.

The primary air inlet size of the first opening is smaller than that of the second opening, so that smoke is prevented from reversely crossing.

The lower feeding pipe 6 comprises a lower front feeding pipe 6-1 and a lower rear feeding pipe 6-2, the lower rear feeding pipe 6-2 is a straight pipe, the size of the lower end of the lower front feeding pipe 6-1 is smaller than that of the lower rear feeding pipe 6-2, the air pressure during feeding can be enhanced, and the reverse back of the material can be effectively prevented.

The bottom of the feeding pipe is provided with an inclined guide plate 7, and a coal-seeding air pipe 8 is arranged at the joint of the feeding pipe and the guide plate 7.

Claims

1. The utility model provides a novel feed pipe structure, its feed pipe including the slope, the feeding straight tube is connected to the feed pipe upper end, a serial communication port, the breach is seted up to the feed pipe side, the breach outside is provided with sealing sleeve, the last wind that is provided with of sealing sleeve imports.

2. The novel feeding pipe structure as claimed in claim 1, wherein the feeding pipe comprises an upper feeding pipe, a middle feeding pipe and a lower feeding pipe connected in series, the upper end of the middle feeding pipe is provided with a first opening, the upper end of the upper feeding pipe is connected with the feeding straight pipe, the lower end of the upper feeding pipe extends into the middle feeding pipe and a gap is reserved between the lower end of the upper feeding pipe and the inner wall of the first opening, the lower end of the upper feeding pipe and the inner wall of the first opening are fixed in a spot welding way, the upper end of the lower feeding pipe is provided with a second opening, the lower end of the middle feeding pipe extends into the lower feeding pipe and a gap is reserved between the lower end of the middle feeding pipe and the inner wall of the second opening, the lower end of the middle feeding pipe and the inner wall of the second opening are fixed in a spot welding mode, and a primary air inlet is formed in each of the first opening and the second opening.

3. A novel feeder tube structure as claimed in claim 2, wherein the primary air inlet at said first opening is smaller in size than the primary air inlet at said second opening.

4. A novel feeding pipe structure as claimed in claim 2, wherein said lower feeding pipe comprises a lower front feeding pipe and a lower rear feeding pipe, said lower rear feeding pipe is a straight pipe, and the size of the lower end of said lower front feeding pipe is smaller than that of said lower rear feeding pipe.

5. A novel feeding pipe structure as claimed in claim 1, wherein an inclined guide plate is arranged at the bottom of the feeding pipe, and a coal-seeding air pipe is arranged at the joint of the feeding pipe and the guide plate.