CN216814217U

CN216814217U - Power plant is with air preheater who has anti-clogging function

Info

Publication number: CN216814217U
Application number: CN202220358216.5U
Authority: CN
Inventors: 刘明; 乔培生; 程杰
Original assignee: Anhui Wanneng Electric Power Operation And Maintenance Co ltd
Current assignee: Anhui Wanneng Electric Power Operation And Maintenance Co ltd
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2022-06-24
Anticipated expiration: 2032-02-22

Abstract

The utility model discloses an air preheater with an anti-blocking function for a power plant, which comprises an annular cavity shell, an upper blocking piece, a lower blocking piece and an air preheater main body, wherein an integral annular cavity is arranged in the annular cavity shell, the upper blocking piece and the lower blocking piece are symmetrically arranged on the top cavity wall and the ground cavity wall of the integral annular cavity, the air preheater main body is rotatably arranged on the upper blocking piece and the lower blocking piece through air preheater rotary columns, dust blocking air inlets are formed in the left side wall and the right side wall of the integral annular cavity, heat-resistant dust blocking nets are arranged on the dust blocking air inlets, semi-annular cavity covers are arranged on the annular cavity shell outside the heat-resistant dust blocking nets in a covering manner, a bottom driving box is arranged at the bottom of the annular cavity shell, and the bottom ends of the air preheater rotary columns extend into the bottom driving box. Has the advantages that: when the smoke dust collector is used, hot air in a flue and smoke dust with heat exchange cold air can be filtered and then subjected to heat exchange, so that smoke dust blockage is avoided, and meanwhile, the smoke dust is collected and treated in a centralized manner.

Description

Power plant is with air preheater who has anti-clogging function

Technical Field

The utility model relates to the field of air preheater devices, in particular to an air preheater with an anti-blocking function for a power plant.

Background

The air preheater is a heating surface for preheating air before entering a boiler to a certain temperature by smoke in a flue at the tail part of the boiler through an internal radiating fin, and is equipment for improving the heat exchange performance of the boiler and reducing energy consumption.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and provide an air preheater with an anti-blocking function for a power plant.

The utility model realizes the purpose through the following technical scheme:

an air preheater with an anti-blocking function for a power plant comprises an annular cavity shell, an upper blocking piece, a lower blocking piece and an air preheater main body, wherein an integral annular cavity is arranged in the annular cavity shell, the upper blocking piece and the lower blocking piece are symmetrically arranged on the top cavity wall and the ground cavity wall of the integral annular cavity, the air preheater main body is rotatably arranged on the upper blocking piece and the lower blocking piece through air preheater rotary columns, dust blocking air inlets are formed in the left side wall and the right side wall of the integral annular cavity, a heat-resistant dust blocking net is arranged on the dust blocking air inlets, a semi-annular cavity cover is arranged on the annular cavity shell outside the heat-resistant dust blocking net in a covering manner, a bottom driving box is arranged at the bottom of the annular cavity shell, the bottom end of the air preheater rotary column extends into the bottom driving box, a large gear is sleeved on the air preheater rotary column extending into the bottom driving box, the large gear is connected with a small gear in a meshing manner, and a motor is arranged in the box of the bottom driving box, the rotor shaft of the motor is connected with the pinion, wind shielding arc plates which are symmetrical to each other are arranged on the top cavity wall of the whole ring cavity on the left side and the right side of the upper blocking piece and the lower blocking piece, a bottom wind shielding ring is arranged on the inner cavity wall of the whole ring cavity, the bottom wind shielding ring is arranged below the heat-resistant component net, and front wind shielding pieces and rear wind shielding pieces are arranged on the front cavity wall and the rear cavity wall of the whole ring cavity.

Furthermore, the air preheater main body is provided with two fan-shaped plate areas and two heat exchange bin areas.

Furthermore, pulse valves are arranged on the top cavity walls of the whole ring cavity on the left side and the right side of the upper stopper and the lower stopper.

Furthermore, an air inlet pipe is installed on the semi-ring cavity cover, two exhaust pipes are installed at the bottom of the semi-ring cavity shell, a funnel wall is arranged at the bottom of the semi-ring cavity cover, and an ash discharge valve is installed at a bottom leakage opening of the funnel wall.

Furthermore, a large bearing is installed at the bottom of the inner side of the bottom driving box, and the bottom end of the air preheater rotary column is rotatably installed in the large bearing.

The gas exchange chamber that above-mentioned structure mainly set up two symmetries, wherein the intake pipe entering of hot gas through one side, after blockking through heat-resisting dirt net, particulate matters such as smoke and dust in the gas block, then enter into the air preheater and heat its inside heat exchange assemblies, cold air gets into from the intake pipe of opposite side simultaneously, and at the rotation in-process of air preheater main part, take away heat exchange assemblies's heat, and in the gas exchange process, the smoke and dust is all filtered in half ring chamber cover.

Has the advantages that: when the air preheater with the anti-blocking function for the power plant is used, hot air in a flue and smoke dust with heat exchange cold air can be filtered and then subjected to heat exchange, so that smoke dust blockage is avoided, and meanwhile, the smoke dust is collected and treated in a centralized manner.

Drawings

FIG. 1 is a schematic front sectional view of an air preheater with a blocking prevention function for a power plant according to the present invention;

fig. 2 is a schematic top sectional view of an air preheater with anti-clogging function for a power plant according to the present invention.

The reference numerals are explained below:

1. an annular chamber housing; 2. an upper stopper and a lower stopper; 3. an air preheater main body; 4. a heat-resistant dust-resistant net; 5. a wind-shielding arc plate; 6. a bottom wind-shield ring; 7. a bottom drive case; 8. a bull gear; 9. rotating the column of the air preheater; 10. a large bearing; 11. a motor; 12. a pinion gear; 13. an exhaust pipe; 14. an ash discharge valve; 15. an air inlet pipe; 16. a half-ring cavity cover; 17. a pulse valve; 18. front and rear wind shielding members; 19. a sector plate area; 20. a heat exchange bin area.

Detailed Description

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 by those of ordinary skill in the art through specific situations.

The utility model will be further described with reference to the accompanying drawings in which:

as shown in fig. 1-2, an air preheater with an anti-clogging function for a power plant is composed of an annular chamber shell 1, an upper stopper 2, a lower stopper 2 and an air preheater main body 3;

an integral ring cavity is arranged inside a ring cavity shell 1, upper blocking pieces 2 and lower blocking pieces 2 which are symmetrically arranged are arranged on the top cavity wall and the ground cavity wall of the integral ring cavity, an air preheater main body 3 is rotatably arranged on the upper blocking pieces 2 and the lower blocking pieces 2 through an air preheater rotating column 9, dust-proof air inlets are arranged on the left side cavity wall and the right side cavity wall of the integral ring cavity, a heat-resistant dust-proof net 4 is arranged on the dust-proof air inlets, and a semi-ring cavity cover 16 is arranged on the ring cavity shell 1 outside the heat-resistant dust-proof net 4 in a covering mode;

a bottom driving box 7 is installed at the bottom of the annular cavity shell 1, the bottom end of an air preheater rotary column 9 extends to the inside of the bottom driving box 7, a large gear 8 is sleeved on the air preheater rotary column 9 extending to the inside of the bottom driving box 7, the large gear 8 is meshed and connected with a small gear 12, a motor 11 is installed in the bottom driving box 7, and a rotor shaft of the motor 11 is connected with the small gear 12;

the top cavity walls of the whole ring cavities on the left side and the right side of the upper stopper 2 and the lower stopper 2 are provided with wind shielding arc plates 5 which are symmetrical with each other, the inner cavity wall of the whole ring cavity is provided with a bottom wind shielding ring 6, the bottom wind shielding ring 6 is arranged below the heat-resistant component net 4, and the front cavity wall and the rear cavity wall of the whole ring cavity are provided with front wind shielding parts and rear wind shielding parts 18.

In the present embodiment, the air preheater main body 3 is provided with two sector plate areas 19 and two heat exchange bin areas 20.

In this embodiment, the pulse valves 17 are installed on the top cavity walls of the whole ring cavity on the left and right sides of the upper and lower stoppers 2, and the pulse valves 17 are used for generating pulse gas vibration to vibrate the heat-resistant dust-resistant net to shake off dust.

In the embodiment, an air inlet pipe 15 is installed on the half-cavity cover 16, two air outlet pipes 13 are installed at the bottom of the half-cavity shell 1, a funnel wall is arranged at the bottom of the half-cavity cover 16, and an ash discharge valve 14 is installed at a bottom leakage opening of the funnel wall.

In this embodiment, a large bearing 10 is installed at the bottom of the inner side of the bottom driving box 7, and the bottom end of the air preheater rotary column 9 is rotatably installed in the large bearing 10.

The gas exchange chamber that above-mentioned structure mainly set up two symmetries, wherein the intake pipe 15 entering of hot gas through one side, after blockking through heat-resisting dirt net 4 that hinders, particulate matters such as smoke and dust in the gas block, then enter into air preheater 3 and heat its inside heat exchange assemblies, cold air gets into from the intake pipe 15 of opposite side simultaneously, in the air preheater main part rotation in-process, take away heat exchange assemblies's heat, in the gas exchange process, the smoke and dust is all filtered in half ring cavity cover 16.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a power plant is with air preheater who has anti-clogging function which characterized in that: the air preheater comprises an annular cavity shell, an upper blocking piece, a lower blocking piece and an air preheater main body, wherein an integral annular cavity is arranged in the annular cavity shell, the upper blocking piece and the lower blocking piece which are symmetrically arranged are arranged on the top cavity wall and the ground cavity wall of the integral annular cavity, the air preheater main body is rotatably arranged on the upper blocking piece and the lower blocking piece through an air preheater rotary column, dust blocking air inlets are arranged on the left side cavity wall and the right side cavity wall of the integral annular cavity, a heat-resistant dust blocking net is arranged on the dust blocking air inlets, a semi-annular cavity cover is arranged on the annular cavity shell on the outer side of the heat-resistant dust blocking net in a covering manner, a bottom driving box is arranged at the bottom of the annular cavity shell, the bottom end of the air preheater rotary column extends into the bottom driving box, a large gear is sleeved on the air preheater rotary column extending into the bottom driving box, the large gear is connected with a small gear in a meshing manner, a motor is arranged in the bottom driving box, and a rotor shaft of the motor is connected with the small gear together, the top cavity walls of the whole ring cavity at the left side and the right side of the upper stopper and the lower stopper are provided with wind shielding arc plates which are symmetrical with each other, the inner cavity wall of the whole ring cavity is provided with a bottom wind shielding ring, the bottom wind shielding ring is arranged below the heat-resistant component net, and the front cavity wall and the rear cavity wall of the whole ring cavity are provided with front wind shielding pieces and rear wind shielding pieces.

2. The air preheater with the anti-blocking function for the power plant according to claim 1, is characterized in that: the air preheater main body is provided with two sector plate areas and two heat exchange bin areas.

3. The air preheater with the anti-blocking function for the power plant according to claim 1, is characterized in that: pulse valves are arranged on the top cavity walls of the whole ring cavity on the left side and the right side of the upper stopper and the lower stopper.

4. The air preheater with the anti-blocking function for the power plant according to claim 1, is characterized in that: the semi-ring cavity cover is provided with an air inlet pipe, the bottom of the semi-ring cavity shell is provided with two exhaust pipes, the bottom of the semi-ring cavity cover is provided with a funnel wall, and a bottom leakage opening of the funnel wall is provided with an ash discharge valve.

5. The air preheater with the anti-blocking function for the power plant according to claim 1, is characterized in that: the bottom of the inner side of the bottom driving box is provided with a large bearing, and the bottom end of the air preheater rotary column is rotatably arranged in the large bearing.