CN211290134U

CN211290134U - Improved air preheater

Info

Publication number: CN211290134U
Application number: CN201921828448.7U
Authority: CN
Inventors: 徐强; 季叶明; 王震明
Original assignee: Wuxi Xingchang Thermal Equipment Co ltd
Current assignee: Wuxi Xingchang Thermal Equipment Co ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-08-18
Anticipated expiration: 2029-10-29

Abstract

The utility model discloses an improved generation air heater, the on-line screen storage device comprises a base, the top of base is provided with the pre-heater main part, the outmost asbestos layer that is of pre-heater main part, the inboard fixedly connected with shell on asbestos layer, the inner wall fixed connection fixed frame of shell, the last lower extreme that alternates fixedly connected with cooling tube and cooling tube in the fixed frame all runs through fixed frame and switches on, the cooling tube comprises outer wall, laminating layer and catalysis structure in proper order, the inside of catalysis structure is a porous material and catalysis structure reserves waste gas discharge channel, fixed frame's inside is provided with multilayer spiral baffle and is run through by the cooling tube, fixed frame's lower extreme fixedly connected with lower cover and lower cover switch on with the cooling tube. The utility model discloses in, help reducing nitrogen oxide's in the waste gas emission, have longer wind channel to make the cold air have sufficient time to heat simultaneously.

Description

Improved air preheater

Technical Field

The utility model relates to an air heater field especially relates to an improved generation air heater.

Background

The air preheater is a heating surface for preheating air before entering the boiler to a certain temperature by smoke in a flue at the tail part of the boiler through internal radiating fins, and is equipment for improving the heat exchange performance of the boiler and reducing energy consumption. Air preheaters are generally classified into plate type, rotary type and tubular type. The air after the waste heat device enters the boiler, so that the drying, firing and burning processes of the fuel are accelerated, the stable burning in the boiler is ensured, and the burning efficiency is improved.

Combustion produces nitrogen oxides to a greater or lesser extent. If the combustion is insufficient, the amount of nitrogen oxide compounds generated becomes larger. To reduce energy consumption, many plants use air preheaters. The air preheater basically uses only the function of heating the intake air. The equipment for reducing the nitrogen oxides is required to be added, so that the cost is increased, heat in waste gas is lost when the equipment is used for treating the nitrogen oxides, and the using effect of the air preheater is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an improved air preheater.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an improved air preheater comprises a base, a preheater main body is arranged above the base, the outmost layer of the preheater main body is an asbestos layer, the inner side of the asbestos layer is fixedly connected with a shell, the inner wall of the shell is fixedly connected with a fixed frame, the fixed frame is internally inserted with a fixedly connected radiating pipe, the upper end and the lower end of the radiating pipe penetrate through the fixed frame and are communicated, the radiating pipe is sequentially composed of an outer wall, an attaching layer and a catalysis structure, the catalysis structure is a porous material, a waste gas discharge channel is reserved in the catalysis structure, a plurality of layers of spiral clapboards are arranged in the fixed frame and are penetrated through by the radiating pipe, the lower end of the fixed frame is fixedly connected with a lower cover which is communicated with the radiating pipe, air inlets are distributed at equal intervals of the lower cover and are communicated with gaps between the air inlets in the radiating pipe in the fixed frame, the upper end of the fixed frame is fixedly connected with an upper cover.

As a further description of the above technical solution:

the edge of base fixed connection support column, the upper end and the preheater main part fixed connection of support column.

As a further description of the above technical solution:

the bottom fixedly connected with intake pipe and the intake pipe of lower cover run through shell and asbestos layer.

As a further description of the above technical solution:

the bottom of the shell is close to the air inlet pipe and is fixedly connected with an air outlet pipe, the air outlet pipe penetrates through the asbestos layer, and the air outlet pipe is communicated with the air inlet hole.

As a further description of the above technical solution:

the upper end fixedly connected with blast pipe of upper cover, the lateral wall of blast pipe is close to first ceiling of upper cover fixed connection.

As a further description of the above technical solution:

the upper end fixedly connected with bracing piece of blast pipe, the upper end fixedly connected with second ceiling of bracing piece.

As a further description of the above technical solution:

and a gap between the first ceiling and the asbestos layer is an air inlet.

The utility model discloses following beneficial effect has:

1. the utility model discloses, the waste gas of burning gets into from the intake pipe, and the abandonment passes lower cover, cooling tube and upper cover, finally discharges from the upper end of blast pipe, and the cold air gets into from the air inlet of first ceiling below, passes the passageway that is formed by the spiral baffle in the fixed frame to by the cooling tube heating in the passageway, through the inlet port that the lower cover set up, send into the combustion chamber from the outlet duct at last, the spiral baffle extension air is from the air inlet to the distance of outlet duct, helps improving the time that the air is heated.

2. The utility model discloses, the structural catalyst that is provided with of catalysis can utilize the waste heat catalysis to become nitrogen gas and other materials with the nitrogen oxide in the abandonment, and the inside waste gas exhaust passage of reserving does not influence the discharge of burning waste gas simultaneously, is provided with the laminating layer between catalysis structure and the outer wall, improves the heat-conduction efficiency between catalysis structure and the outer wall, and the catalysis structure acts as the heat transfer of fin in with waste gas to the outer wall this moment.

Drawings

FIG. 1 is a front view of an improved air preheater according to the present invention;

FIG. 2 is a partial cross-sectional view of an improved air preheater according to the present invention;

fig. 3 is a partial cross-sectional view of a heat dissipation tube of an improved air preheater provided by the present invention.

Illustration of the drawings:

1. a base; 2. an air inlet pipe; 3. an air outlet pipe; 4. a preheater main body; 5. a support pillar; 6. a first ceiling; 7. an exhaust pipe; 8. a second ceiling; 9. a support bar; 10. a lower cover; 11. an asbestos layer; 12. a housing; 13. an air inlet; 14. a fixed frame; 15. a spiral separator plate; 16. a radiating pipe; 17. an air inlet; 18. an upper cover; 19. an outer wall; 20. laminating layers; 21. a catalytic structure.

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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides an embodiment: an improved air preheater comprises a base 1, a preheater main body 4 is arranged above the base 1, an asbestos layer 11 is arranged on the outmost layer of the preheater main body 4, a shell 12 is fixedly connected to the inner side of the asbestos layer 11, a fixed framework 14 is fixedly connected to the inner wall of the shell 12, a radiating pipe 16 is fixedly connected to the fixed framework 14 in a penetrating mode and penetrates through the fixed framework 14, the upper end and the lower end of the radiating pipe 16 are conducted, the radiating pipe 16 is composed of an outer wall 19, an attaching layer 20 and a catalysis structure 21 in sequence, the catalysis structure 21 is a porous material, a waste gas discharge channel is reserved inside the catalysis structure 21, a catalyst is arranged on the catalysis structure 21, nitrogen oxides in waste can be catalyzed into nitrogen and other substances by using waste heat, the discharge channel reserved inside does not influence the discharge of combustion waste gas, the attaching layer 20 is arranged between the catalysis structure 21 and the outer wall 19, the efficiency of heat conduction between the catalysis, the inside of fixed frame 14 is provided with multilayer spiral baffle 15 and spiral baffle 15 is run through by cooling tube 16, the distance of extension air from air inlet 17 to outlet duct 3 helps improving the time that the air is heated, fixed frame 14's lower extreme fixedly connected with lower cover 10 and lower cover 10 switch on with cooling tube 16, the equidistance of lower cover 10 distributes and is provided with inlet port 13 and only switches on with the clearance between the cooling tube 16 in fixed frame 14, fixed frame 14's upper end fixedly connected with upper cover 18.

Base 1's marginal fixed connection support column 5, the upper end and the 4 fixed connection of pre-heater main part of support column 5, the bottom fixedly connected with intake pipe 2 and the intake pipe 2 of lower cover 10 run through shell 12 and asbestos layer 11, the bottom of shell 12 is close to intake pipe 2 fixedly connected with outlet duct 3 and runs through asbestos layer 11, outlet duct 3 switches on with inlet port 13, the upper end fixedly connected with blast pipe 7 of upper cover 18, the lateral wall of blast pipe 7 is close to the first ceiling 6 of the 18 fixed connection of upper cover, the upper end fixedly connected with bracing piece 9 of blast pipe 7, the upper end fixedly connected with second ceiling 8 of bracing piece 9, the gap that exists between first ceiling 6 and the asbestos layer 11 is air inlet 17.

The working principle is as follows: when the utility model is used, burnt waste gas enters from the air inlet pipe 2, the waste passes through the lower cover 10, the radiating pipe 16 and the upper cover 18, and is finally discharged from the upper end of the exhaust pipe 7, cold air enters from the air inlet 17 below the first ceiling 6, passes through the channel formed by the spiral clapboard 15 in the fixed frame 14 and is heated by the radiating pipe 16 in the channel, passes through the air inlet 13 arranged on the lower cover 10 and is finally sent into the combustion chamber from the air outlet pipe 3, the spiral clapboard 15 prolongs the distance between the air inlet 17 and the air outlet pipe 3, which is helpful to improve the heating time of the air, the catalyst is arranged on the catalytic structure 21, nitrogen oxide in the waste can be catalyzed into nitrogen and other substances by using residual heat, meanwhile, the waste gas discharge channel is reserved inside without influencing the discharge of the burnt waste gas, the laminating layer 20 is arranged between the catalytic structure 21 and the outer wall 19, the efficiency of heat conduction between the catalytic, the catalytic structure 21 now acts as a heat sink to transfer heat from the exhaust gas to the outer wall 19.

Finally, it should be noted that: 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 and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. An improved generation air heater, includes base (1), its characterized in that: the improved solar heat collector is characterized in that a preheater main body (4) is arranged above the base (1), the outermost layer of the preheater main body (4) is an asbestos layer (11), an inner side fixedly connected with a shell (12) of the asbestos layer (11), an inner wall fixedly connected with a fixed frame (14) of the shell (12), a radiating pipe (16) fixedly connected with and inserted into the fixed frame (14), the upper end and the lower end of the radiating pipe (16) penetrate through the fixed frame (14) and are communicated with each other, the radiating pipe (16) is sequentially composed of an outer wall (19), an attaching layer (20) and a catalytic structure (21), the catalytic structure (21) is a porous material, a waste gas discharge channel is reserved in the catalytic structure (21), a plurality of layers of spiral partition plates (15) are arranged in the fixed frame (14), the spiral partition plates (15) are penetrated through by the radiating pipe (16), a lower end fixedly connected with a lower cover (10) and the lower cover (10) of the fixed frame (14) are communicated with the, the air inlet holes (13) are distributed on the lower cover (10) at equal intervals, the air inlet holes (13) are only communicated with gaps among the radiating pipes (16) in the fixed frame (14), and the upper end of the fixed frame (14) is fixedly connected with an upper cover (18).

2. An improved air preheater as recited in claim 1, wherein: the edge of base (1) fixed connection support column (5), the upper end and pre-heater main part (4) fixed connection of support column (5).

3. An improved air preheater as recited in claim 1, wherein: the bottom fixedly connected with intake pipe (2) of lower cover (10) and intake pipe (2) run through shell (12) and asbestos layer (11).

4. An improved air preheater as recited in claim 1 or 2, wherein: the bottom of the shell (12) is close to the air inlet pipe (2) and is fixedly connected with an air outlet pipe (3), the air outlet pipe (3) penetrates through the asbestos layer (11), and the air outlet pipe (3) is communicated with the air inlet hole (13).

5. An improved air preheater as recited in claim 1, wherein: the upper end of the upper cover (18) is fixedly connected with an exhaust pipe (7), and the side wall of the exhaust pipe (7) close to the upper cover (18) is fixedly connected with a first ceiling (6).

6. An improved air preheater as set forth in claim 5, wherein: the upper end fixedly connected with bracing piece (9) of blast pipe (7), the upper end fixedly connected with second ceiling (8) of bracing piece (9).

7. An improved air preheater as set forth in claim 5, wherein: and a gap between the first ceiling (6) and the asbestos layer (11) is an air inlet (17).