CN218348678U - Flue gas recirculation pipeline for preventing blocking of turn-off baffle - Google Patents
Flue gas recirculation pipeline for preventing blocking of turn-off baffle Download PDFInfo
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- CN218348678U CN218348678U CN202220959705.6U CN202220959705U CN218348678U CN 218348678 U CN218348678 U CN 218348678U CN 202220959705 U CN202220959705 U CN 202220959705U CN 218348678 U CN218348678 U CN 218348678U
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- recirculation
- baffle
- flue gas
- trunk line
- branch pipe
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Abstract
The utility model provides a prevent to turn off flue gas recirculation pipeline of baffle bite relates to boiler technical field, including recirculation trunk line and a plurality of recirculation branch pipe, the one end and a plurality of recirculation branch union coupling of recirculation trunk line, the inside of every recirculation branch pipe sets up with the junction of recirculation trunk line and turns off the baffle, and recirculation trunk line forms "people" font structure with two adjacent recirculation branch pipes, and when the shutoff baffle in one of them recirculation branch pipe was in the closed condition, the cigarette ash of shutoff baffle upside can utilize the slope natural flow to flow in other recirculation branch pipes. The recirculation branch pipe that is shut off can not form the deposition, and the shutoff baffle after closing can not cause the unable normal opening of jam because of the surperficial a large amount of piles of ash yet, has effectively improved the reliability of equipment operation.
Description
Technical Field
The utility model belongs to the technical field of the boiler, especially, relate to a prevent to turn off flue gas recirculation pipe of baffle bite.
Background
The boiler adopts a flue gas recirculation mode, can realize the control of combustion temperature, improves the temperature field, the flow field and the like of a combustion chamber, and thus achieves the purposes of changing heat distribution and adjusting steam temperature.
The low temperature flue gas before the air heater is generally extracted to the flue gas recirculation pipeline, sends into furnace through a plurality of branches with the flue gas, and this position flue gas temperature is lower relatively, and dusty granule is harder relatively in the flue gas, and a large amount of dusty flue gas get into flue gas recirculation pipeline, has great wearing and tearing to flue gas recirculation fan, therefore the fan needs regularly to overhaul the maintenance. For satisfying the fan and going on online maintenance one by one, the fan of every branch road is imported and exported and all is equipped with the shutoff baffle, as shown in fig. 1 for the structural schematic diagram of conventional flue gas recirculation pipeline, the pipeline bottom surface has more horizontal segment to have the deposition to form, the shutoff baffle sets up in vertical branch pipe of placing, when the baffle is closed, a large amount of cigarette ashes can be piled up to the baffle upside, cause the baffle bite, unable normal opening causes equipment to damage easily, shortens equipment life.
SUMMERY OF THE UTILITY MODEL
The utility model aims at designing a novel flue gas recirculation pipeline, the adjustment is turn-offed the position that sets up of baffle to reduce the cigarette ash accumulation volume of baffle upside among the flue gas recirculation pipeline, prevent to turn-offe the baffle bite.
In order to solve the technical problem, the utility model provides a prevent to turn off flue gas recirculation pipeline of baffle bite, including recirculation trunk line and a plurality of recirculation branch pipe, the one end and a plurality of recirculation branch union coupling of recirculation trunk line, every recirculation branch pipe inside with the junction of recirculation trunk line sets up and turns off the baffle.
Further, the included angle between the axis of the recirculation branch pipe and the vertical line of the axis of the recirculation main pipe is alpha, and the included angle ranges from 40 degrees to alpha less than 90 degrees.
Furthermore, the number of the recirculation branch pipes is 2-8, and the recirculation main pipe and two adjacent recirculation branch pipes form a herringbone structure.
The axis of the main recirculation pipe is intersected with the axis of the main recirculation pipe, a shutoff baffle is arranged at the joint of the interior of each main recirculation pipe and the main recirculation pipe, and when the shutoff baffle in one of the recirculation pipes is in a closed state, soot on the upper side of the shutoff baffle can naturally flow into other recirculation pipes by utilizing the gradient. The recirculation branch pipe that is shut off can not form the deposition, and the shutoff baffle after closing can not cause the unable normal opening of jam because of the surperficial a large amount of piles of ash yet, has effectively improved the reliability of equipment operation.
Further, the quantity of recirculation branch pipe is 2, recirculation trunk line and two recirculation branch pipes form "people" font structure.
Has the beneficial effects that:
the utility model provides a pair of prevent turn-off baffle puckery flue gas recirculation pipeline, including recirculation trunk line and a plurality of recirculation branch pipe, the one end and a plurality of recirculation branch union coupling of recirculation trunk line, every the inside of recirculation branch pipe with the junction of recirculation trunk line sets up the turn-off baffle, the axis of recirculation branch pipe with contained angle between the perpendicular line of the axis of recirculation trunk line is alpha, and the scope of contained angle is 40 and is less than or equal to alpha < 90, recirculation trunk line and two adjacent recirculation branch pipes form "people" font structure, the axis of recirculation trunk line with the axis of recirculation branch pipe is crossing, every the inside of recirculation branch pipe with the junction of recirculation trunk line sets up the turn-off baffle, and when the turn-off baffle in one of them recirculation branch pipe was in the closed condition, the cigarette ash of turn-off baffle upside can utilize the slope nature to flow in other recirculation branch pipes. The recycling branch pipe which is shut off cannot form accumulated dust, the shut-off baffle which is closed cannot be normally opened due to the fact that a large amount of accumulated dust on the surface is jammed, and the reliability of equipment operation is effectively improved.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.
Drawings
FIG. 1 is a schematic structural view of a conventional flue gas recirculation duct;
FIG. 2 is a schematic view of a flue gas recirculation duct to prevent jamming of the shutoff damper;
reference numerals:
1. a main recirculation line; 2. a recirculation branch pipe; 3. the shutter is turned off.
Detailed Description
The present invention will be further described with reference to the following detailed description. It should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.
In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.
Example (b):
as shown in fig. 2, in a preferred embodiment, the utility model provides a prevent to turn off flue gas recirculation pipeline of baffle bite, including a vertical recirculation trunk line 1 of placing, two recirculation branch pipes 2 and two shutoff baffles 3, the one end and two recirculation branch pipes 2 of recirculation trunk line 1 are connected, recirculation trunk line 1 forms "people" font structure with two recirculation branch pipes 2, shutoff baffles 3 set up the junction at the inside top of recirculation branch pipe 2 and recirculation trunk line 1, the contained angle alpha between the axis of recirculation branch pipe 2 and the perpendicular line of the axis of recirculation trunk line 1 is 50. It should be noted that the recirculation branch pipe 2 in the present embodiment is a straight pipe structure, and the branch pipe in the prior art of fig. 1 has a 7-shaped structure.
In the embodiment, the branched position of the vertically arranged main recirculation pipe 1 is arranged in a herringbone manner, the shutoff baffle 3 is arranged at the joint of the top end of the interior of the main recirculation pipe 2 and the main recirculation pipe 1, and when the shutoff baffle 3 in one recirculation pipe 2 is in a closed state, the cigarette ash on the upper side of the shutoff baffle 3 can naturally flow into the other recirculation pipe 2 by utilizing the gradient. The recirculation branch pipe 2 that is turn-offed can not form the deposition, and turn-off baffle 3 after closing can not cause the unable normal opening of jam because of a large amount of heap ashes on surface yet, and the design structure of flue gas recirculation pipeline is succinct, has effectively improved the reliability of equipment operation.
Finally, it should be noted that: the present invention is not limited to the above embodiments, and all the equivalent structures or equivalent processes that are used in the specification and the attached drawings are transformed or directly or indirectly used in other related technical fields, and all the same principles are included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a prevent flue gas recirculation pipeline of shutoff baffle bite, its characterized in that, includes recirculation trunk line (1) and a plurality of recirculation branch pipe (2), the one end and a plurality of recirculation branch pipe (2) of recirculation trunk line (1) are connected, every the inside of recirculation branch pipe (2) with the junction of recirculation trunk line (1) sets up shutoff baffle (3).
2. Flue gas recirculation pipe to prevent jamming of the shut-off baffles according to claim 1, characterized in that the angle between the axis of the recirculation branch pipe (2) and the perpendicular to the axis of the main recirculation pipe (1) is α, the angle ranging from 40 ° to α < 90 °.
3. The flue gas recirculation duct for preventing jamming of the shut-off shutter according to claim 2, characterized in that the number of recirculation branches (2) is between 2 and 8.
4. The flue gas recirculation duct for preventing blocking of the shut-off shutter according to claim 1, characterized in that the number of said recirculation branch ducts (2) is 2, said recirculation main duct (1) forming with two recirculation branch ducts (2) a "herringbone" structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220959705.6U CN218348678U (en) | 2022-04-22 | 2022-04-22 | Flue gas recirculation pipeline for preventing blocking of turn-off baffle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220959705.6U CN218348678U (en) | 2022-04-22 | 2022-04-22 | Flue gas recirculation pipeline for preventing blocking of turn-off baffle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218348678U true CN218348678U (en) | 2023-01-20 |
Family
ID=84920645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220959705.6U Active CN218348678U (en) | 2022-04-22 | 2022-04-22 | Flue gas recirculation pipeline for preventing blocking of turn-off baffle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218348678U (en) |
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2022
- 2022-04-22 CN CN202220959705.6U patent/CN218348678U/en active Active
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