CN216591774U

CN216591774U - Boiler flue gas denitration tower with insulation construction

Info

Publication number: CN216591774U
Application number: CN202122495030.2U
Authority: CN
Inventors: 王喆; 徐德勤; 王海彬; 王越; 王浩羽; 王刚; 王晓东; 白杨; 高峰; 张博
Original assignee: Dalian Power Plant of Huaneng International Power Co Ltd
Current assignee: Dalian Power Plant of Huaneng International Power Co Ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-05-24
Anticipated expiration: 2031-10-15

Abstract

The utility model provides a boiler flue gas denitration tower with a heat preservation structure, which comprises a tower body, wherein the tower body comprises a flue gas inlet pipe and a heat preservation cavity, the flue gas inlet pipe is arranged at the bottom of the inner wall of the tower body, the heat preservation cavity is arranged in one side of the tower body close to the flue gas inlet pipe, the heat preservation component is arranged in the heat preservation cavity and comprises a rotating shaft, a heating component is arranged on the outer wall of the rotating shaft, a rotating gear is sleeved on the outer wall of the rotating shaft below the heating component, a movable shaft is arranged on the inner wall of one side of the tower body close to the rotating gear, two ends of the movable shaft are respectively provided with a transmission gear, one transmission gear is meshed with the rotating gear, the other transmission gear is rotatably connected with a motor through a driving gear, an output shaft of the motor penetrates through the interior of the flue gas inlet pipe and is rotatably connected with fan blades, a temperature monitoring element is arranged in one side of the flue gas inlet pipe close to the fan blades, and the temperature monitoring element is electrically connected with the heating component and the motor, the temperature monitoring element can enable the flue gas to meet the temperature requirement of denitration catalytic reduction reaction, the denitration effect is improved, and the use of workers is facilitated.

Description

Boiler flue gas denitration tower with insulation construction

Technical Field

The utility model mainly relates to the technical field of boiler flue gas, in particular to a boiler flue gas denitration tower with a heat insulation structure.

Background

The boiler is an energy conversion equipment, there is the chemical energy in the fuel to the energy of boiler input, the electric energy, then boiler output has substances such as steam and high-temperature water of certain heat energy, the in-process of boiler burning can produce the flue gas, these flue gases need be handled it through the denitration tower, but current denitration tower lacks the measure of keeping warm to the flue gas, the temperature of flue gas can quick loss, thereby lead to the flue gas can't satisfy the temperature demand of denitration catalytic reduction reaction, the denitration effect has been reduced, staff's use is not convenient for.

The utility model discloses a desulfurization and denitrification tower for preventing exhaust gas from flowing back according to the patent document application number (CN201910076009.3), which comprises a desulfurization and denitrification tower main body, a slurry pool, a first connecting pipe, a denitrification spraying layer, a second connecting pipe, a desulfurization spraying layer, a spraying head, a defogging layer and a smoke outlet. According to the desulfurization and denitrification tower for preventing the waste gas from flowing back, when the main body of the desulfurization and denitrification tower stops working, the closing of the smoke inlet pipe can be realized, the waste gas is prevented from flowing back, and the desulfurization and denitrification effect of the waste gas can be improved.

SUMMERY OF THE UTILITY MODEL

The utility model mainly provides a boiler flue gas denitration tower with a heat insulation structure, which is used for solving the technical problems in the background technology.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

a boiler flue gas denitration tower with a heat preservation structure comprises a tower body, wherein the tower body comprises a flue gas inlet pipe and a heat preservation cavity, the flue gas inlet pipe is arranged at the bottom of the inner wall of the tower body, the heat preservation cavity is arranged in one side, close to the flue gas inlet pipe, of the tower body, a heat preservation assembly is arranged in the heat preservation cavity, the heat preservation assembly comprises a rotating shaft, a heating assembly is arranged on the periphery of the outer wall of the rotating shaft respectively, a rotating gear is sleeved on the outer wall of the rotating shaft right below the heating assembly, the inner wall, close to one side of the rotating gear, of the tower body is connected with a movable shaft through a shaft seal, two ends of the movable shaft are respectively provided with a transmission gear, one transmission gear is meshed with the rotating gear, the other transmission gear is rotatably connected with a motor through a driving gear, an output shaft of the motor penetrates through the interior of the flue gas inlet pipe and is rotatably connected with fan blades, and a temperature monitoring element is arranged in one side, close to the fan blades, of the flue gas inlet pipe, the temperature monitoring element is electrically connected with the heating component and the motor.

Preferably, the heat preservation intracavity portion is equipped with the heat preservation, can play the too fast effect of heat loss of avoiding the heat preservation intracavity portion through the heat preservation, has avoided the heat to suffer the waste.

Preferably, advance the tobacco pipe and be close to the inside one side of tower body and be the heliciform setting, can play the effect of extension flue gas at the heat preservation intracavity portion time through this setting, improved the heat preservation effect of heat preservation subassembly.

Preferably, the inside purification subassembly that is equipped with of tower body above the heat preservation chamber can play the effect of carrying out the denitration to the flue gas through purifying the subassembly.

Preferably, the motor is externally provided with a shell, the shell can protect the motor, the motor is prevented from being influenced by external factors, and the service cycle of the motor is prolonged.

Preferably, the outer wall of one side of casing is equipped with the access door, can play the effect that makes things convenient for the staff to maintain and clear up the motor through the access door.

Preferably, heat preservation chamber top surface inner wall is equipped with the fixed block, fixed block swing joint pivot top can play the effect of avoiding the pivot to take place to rock at rotatory in-process through the fixed block, has improved the stability of pivot, has made things convenient for staff's use.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the flue gas can meet the temperature requirement of a denitration catalytic reduction reaction through the tower body, the smoke inlet pipe, the heat preservation cavity, the rotating shaft, the heating assembly, the rotating gear, the movable shaft, the transmission gear, the driving gear, the motor, the fan blades, the temperature monitoring element and the purification assembly, so that the denitration effect is improved, and the use of workers is facilitated; the fixed block can prevent the rotating shaft from shaking in the rotating process, so that the stability of the rotating shaft is improved; the heat inside the heat preservation cavity can be prevented from being lost too fast through the heat preservation layer, and the heat is prevented from being wasted; the motor can be protected by the shell, the motor is prevented from being influenced by external factors, and the service cycle of the motor is prolonged; the maintenance and the cleaning of the motor by workers can be facilitated through the access door.

The present invention will be explained in detail below with reference to the drawings and specific embodiments.

Drawings

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

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is an enlarged view of area A of FIG. 2;

fig. 4 is an enlarged schematic view of a region B in fig. 2.

In the figure: 1. a tower body; 11. a smoke inlet pipe; 12. a heat preservation cavity; 121. a heat-insulating layer; 122. a fixed block; 13. a heat preservation assembly; 131. a rotating shaft; 132. a heating assembly; 133. a rotating gear; 134. a movable shaft; 135. a transmission gear; 136. a drive gear; 137. a motor; 138. a fan blade; 139. a temperature monitoring element; 14. a purification assembly; 15. a housing; 151. and (4) an access door.

Detailed Description

In order to facilitate an understanding of the utility model, the utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the utility model are shown, but which may be embodied in different forms and not limited to the embodiments described herein, but which are provided so as to provide a more thorough and complete disclosure of the utility model.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the knowledge of the terms used herein in the specification of the present invention is for the purpose of describing particular embodiments and is not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Please refer to fig. 1-4, a boiler flue gas denitration tower with a heat insulation structure comprises a tower body 1, the tower body 1 comprises a flue gas inlet pipe 11 and a heat insulation chamber 12, the flue gas inlet pipe 11 is arranged at the bottom of the inner wall of the tower body 1, the heat insulation chamber 12 is arranged inside one side of the tower body 1 close to the flue gas inlet pipe 11, a heat insulation assembly 13 is arranged inside the heat insulation chamber 12, the heat insulation assembly 13 comprises a rotating shaft 131, a heating assembly 132 is respectively arranged around the outer wall of the rotating shaft 131, the outer wall of the rotating shaft 131 under the heating assembly 132 is sleeved with a rotating gear 133, the inner wall of the tower body 1 close to one side of the rotating gear 133 is connected with a movable shaft 134 through a shaft seal, two ends of the movable shaft 134 are respectively provided with a transmission gear 135, one of the transmission gears 135 is engaged with the rotating gear 133, the other transmission gear 135 is rotatably connected with a motor 137 through the driving gear 136, an output shaft of the motor 137 penetrates into the flue gas inlet pipe 11 and is rotatably connected with a fan blade 138, the temperature monitoring element 139 is arranged inside one side of the smoke inlet pipe 11 close to the fan blades 138, the temperature monitoring element 139 can use fresh shield LY-RTH1000B or can use other temperature monitoring elements with the same function, and the temperature monitoring element 139 is electrically connected with the heating assembly 132 and the motor 137.

Please refer to fig. 4 again, the heat preservation layer 121 is disposed inside the heat preservation cavity 12, and the heat preservation layer 121 can prevent the heat inside the heat preservation cavity 12 from being lost too fast, so as to prevent the heat from being wasted.

Please refer to fig. 2, one side of the smoke inlet pipe 11 close to the interior of the tower body 1 is spirally arranged, so that the arrangement can prolong the time of the smoke in the heat preservation cavity 12, and improve the heat preservation effect of the heat preservation assembly 13.

Please refer to fig. 2, a purification assembly 14 is disposed inside the tower body 1 above the heat preservation chamber 12, and the purification assembly 14 can perform a denitration function on the flue gas.

Referring to fig. 1 and 2 again, the motor 137 is externally provided with the housing 15, and the housing 15 can protect the motor 137, so as to prevent the motor 137 from being affected by external factors, and improve the service cycle of the motor 137.

Please refer to fig. 1 again, an access door 151 is disposed on an outer wall of one side of the housing 15, and the access door 151 can be used for facilitating maintenance and cleaning of the motor 137 by a worker.

Please refer to fig. 2, the fixing block 122 is disposed on the inner wall of the top surface of the heat preservation cavity 12, the fixing block 122 is movably connected to the top end of the rotating shaft 131, the fixing block 122 can prevent the rotating shaft 131 from shaking during the rotation process, so as to improve the stability of the rotating shaft 131 and facilitate the use of the working personnel.

The specific operation mode of the utility model is as follows:

firstly, in the flowing process of the flue gas, the temperature monitoring element 139 of the heat preservation assembly 13 monitors the temperature of the flue gas, and under the condition that the temperature of the flue gas meets the standard, the motor 137 inside the housing 15 can make the fan blades 138 rotate inside the smoke inlet pipe 11, the flue gas can quickly pass through the heat preservation cavity 12 of the tower body 1, when the temperature of the flue gas is too low, the temperature monitoring element 139 can close the motor 137 and start the heating assembly 132, and simultaneously the flue gas can push the fan blades 138 to rotate inside the smoke inlet pipe 11, so that the flowing speed of the flue gas can be reduced, the fan blades 138 can drive the driving gear 136 of the output shaft of the motor 137 to rotate, the driving gear 136 can drive the rotating shaft 131 to rotate inside the heat preservation cavity 12 through the movable shaft 134, the driving gear 135 and the rotating gear 133, and simultaneously the rotating shaft 131 can uniformly heat the inside of the heat preservation cavity 12 through the heating assembly 132, and the flue gas can be driven and heated by the smoke inlet pipe 11, after heating, the flue gas will move out of the interior of the heat-insulating chamber 12 through the smoke inlet pipe 11, and then the purifying assembly 14 will heat the flue gas.

The utility model is described above with reference to the accompanying drawings, it is obvious that the utility model is not limited to the above-described embodiments, and it is within the scope of the utility model to adopt such insubstantial modifications of the inventive method concept and solution, or to apply the inventive concept and solution directly to other applications without modification.

Claims

1. The boiler flue gas denitration tower with the heat insulation structure comprises a tower body (1) and is characterized in that the tower body (1) comprises a smoke inlet pipe (11) and a heat insulation cavity (12), the smoke inlet pipe (11) is arranged at the bottom of the inner wall of the tower body (1), the heat insulation cavity (12) is arranged inside one side, close to the smoke inlet pipe (11), of the tower body (1), a heat insulation component (13) is arranged inside the heat insulation cavity (12), the heat insulation component (13) comprises a rotating shaft (131), heating components (132) are arranged on the periphery of the outer wall of the rotating shaft (131) respectively, the outer wall of the rotating shaft (131) right below the heating components (132) is sleeved with a rotating gear (133), the inner wall of one side, close to the rotating gear (133), of the tower body (1) is connected with a movable shaft (134) through a shaft seal, two ends of the movable shaft seal (134) are provided with transmission gears (135) respectively, one of the transmission gears (135) is meshed with the rotating gear (133), the other transmission gear (135) is rotatably connected with a motor (137) through a driving gear (136), an output shaft of the motor (137) penetrates through the interior of the smoke inlet pipe (11) and is rotatably connected with fan blades (138), a temperature monitoring element (139) is arranged in one side of the smoke inlet pipe (11) close to the fan blades (138), and the temperature monitoring element (139) is electrically connected with the heating assembly (132) and the motor (137).

2. The boiler flue gas denitration tower with the heat preservation structure of claim 1, wherein a heat preservation layer (121) is arranged inside the heat preservation cavity (12).

3. The boiler flue gas denitration tower with the heat preservation structure of claim 1, wherein one side of the flue gas inlet pipe (11) close to the interior of the tower body (1) is spirally arranged.

4. The boiler flue gas denitration tower with the heat preservation structure of claim 1, wherein a purification component (14) is arranged inside the tower body (1) above the heat preservation cavity (12).

5. The boiler flue gas denitration tower with the heat preservation structure as recited in claim 1, wherein a housing (15) is provided outside said motor (137).

6. The boiler flue gas denitration tower with the heat preservation structure of claim 5, characterized in that an access door (151) is arranged on the outer wall of one side of the shell (15).

7. The boiler flue gas denitration tower with the heat preservation structure of claim 1, wherein a fixed block (122) is arranged on the inner wall of the top surface of the heat preservation cavity (12), and the fixed block (122) is movably connected with the top end of the rotating shaft (131).