Baffle suitable for air duct of lignite blending combustion burner

Abstract

The utility model relates to the field of combustors, and discloses a lignite blending combustion combustor air duct baffle which comprises an air inlet pipe fixedly installed on one side of a combustor, a small air inlet channel and a large air inlet channel are arranged in the air inlet pipe, and driving assemblies are fixedly installed on the outer side of the air inlet pipe located at one end of the small air inlet channel and the outer side of the air inlet pipe located at one end of the large air inlet channel respectively. By means of the structure, the baffle adjusting process can be conveniently carried out, and meanwhile a worker can conveniently observe the opening degree of the baffle in the adjusting process.

Description

Technical Field

[0001] The utility model relates to the field of burners, in particular to an air duct baffle plate of a burner suitable for brown coal blending combustion. Background Art

[0002] Burners are devices that spray fuel and air in a certain way for mixed combustion. Burners can be divided into industrial burners, burners and civil burners. Adding lignite to the fuel of the burner can effectively reduce the ignition temperature of the mixed fuel and shorten the burnout time. With the increase of the lignite blending ratio, the ignition index, burnout index and comprehensive combustion characteristic index of the mixed fuel all increase significantly. With the increase of the lignite blending ratio, CO 2 Emissions gradually decreased, NO and NO 2 The overall emission increased, SO 2 The emissions of CO and NOx show a fluctuating trend, and blending has a certain inhibitory effect on NOx emissions.

[0003] For example, the utility model with the publication (announcement) number: CN209978092U discloses a burner damper damper adjustment device for a negative pressure furnace with multiple burners, including multiple burners, the burners include air inlet channels, dampers, burners and fire trays, equipped with pipelines, the air inlet channels include large air inlet channels and small air inlet channels, the large air inlet channels are provided with automatic dampers, the small air inlet channels are provided with manual dampers, and the automatic dampers are connected to the long round tube through a connecting rod adjustment mechanism. The utility model provides a manual and automatic integrated adjustment device for the dampers of burners in a negative pressure furnace with multiple burners, two independent air inlet channels of different sizes are adopted through the air inlet channels, and the ratio of the diameter of the large air inlet channel to the diameter of the small air inlet channel is 7:3, the damper damper of the large air inlet channel is connected to the automatic adjustment device, and the damper damper of the small air inlet channel is manually adjusted by a handle, which is flexible to adjust and meets the air requirements of the burner.

[0004] The above utility model adjusts the baffle by providing adjustment structures in the large and small air ducts. However, the adjustment mechanism structure of the large air inlet duct is complex. Meanwhile, the manual adjustment of the small air inlet duct by a handle is not convenient for the staff to observe the baffle opening, making it difficult to effectively and timely adjust the baffle according to the fuel combustion conditions in the furnace. Utility Model Content

[0005] The utility model aims to provide an air duct baffle of a burner which can adapt to the combustion of lignite, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present utility model provides the following technical solutions: An air duct baffle for a lignite co-firing burner, comprising an air inlet pipe fixedly installed on one side of the burner. A small air inlet channel and a large air inlet channel are provided in the air inlet pipe. Driving components are respectively and fixedly installed on the air inlet pipe outside the small air inlet channel and the large air inlet channel. One end of each driving component is fixedly installed with a baffle component adapted to the air inlet channel.

[0007] Preferably: The baffle component includes a rotating shaft and a baffle.

[0008] Preferably: Each driving component includes a micro motor. The micro motor is located outside the air inlet pipe, and the output end of the micro motor is connected to the corresponding rotating shaft.

[0009] Preferably: The micro motor is fixedly installed at one end of the mounting plate.

[0010] Preferably: Each mounting plate is respectively fixedly installed on the outer surface of the air inlet pipe through a plurality of connecting rods.

[0011] Preferably: The air inlet pipe, the small air inlet channel and the large air inlet channel are all rectangular.

[0012] Preferably: One end of the rotating shaft rotates through the air inlet pipe and is fixedly connected to the output end of the corresponding micro motor through a coupling.

[0013] Preferably: Each rotating shaft extends into the corresponding air inlet channel, and baffles with shapes adapted to the inner walls of the corresponding air inlet channels are respectively fixedly installed on the rotating shafts.

[0014] Preferably: A rotating bar is fixedly sleeved on the rotating shaft, and the extending directions of each rotating bar on both sides are the same as the extending direction of the corresponding baffle surface.

[0015] Preferably: The rotating shaft is located at the central axis of the corresponding baffle.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] The present utility model respectively drives the rotating shaft to rotate through each micro motor, so that the rectangular baffles arranged in the small air inlet channel and the large air inlet channel rotate along the small air inlet channel and the large air inlet channel, thereby adjusting the air inlet flux of the small air inlet channel and the large air inlet channel, reducing the labor intensity of manual adjustment. At the same time, a rotating bar with the same extending direction as the corresponding baffle is sleeved at one end of each rotating shaft. Thus, during the process of adjusting the baffle angle in the small air inlet channel and the large air inlet channel, the opening degree of the corresponding baffle can be observed through the rotating bar rotating at the same angle, which is more intuitive and convenient for operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present utility model;

[0019] Figure 2 This is an enlarged schematic view of the structure at position A of the present utility model.

[0020] In the figure: 1, air inlet pipe; 2, burner; 3, small air inlet channel; 4, large air inlet channel; 5, drive assembly; 6, baffle assembly; 51, micro motor; 52, mounting plate; 53, connecting rod; 61, rotating shaft; 62, baffle; 63, rotating bar. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment 1

[0023] Please refer to Figure 1 - Figure 2 , the air duct baffle of the burner adapted to the co - firing of lignite in the figure shows that it includes an air inlet pipe 1 fixedly installed on one side of the burner 2. A small air inlet channel 3 and a large air inlet channel 4 are arranged in the air inlet pipe 1. Drive assemblies 5 are respectively fixedly installed on the outer sides of the air inlet pipe 1 at one ends of the small air inlet channel 3 and the large air inlet channel 4. One end of each drive assembly 5 is fixedly installed with a baffle assembly 6 adapted to the air inlet channel, that is, one drive assembly 5 is fixedly installed with a baffle assembly 6 adapted to the small air inlet channel 3, and the other drive assembly 5 is fixedly installed with a baffle assembly 6 adapted to the large air inlet channel 4.

[0024] In this embodiment, each of the driving components 5 includes a micro motor 51 which is located outside the air inlet pipe 1, and the output end of the micro motor 51 is connected to the corresponding rotating shaft 61. A micro motor 51 is respectively arranged outside the small air inlet channel 3 and the large air inlet channel 4; the micro motor 51 is fixedly installed at one end of the mounting plate 52, and each of the mounting plates 52 is fixedly installed on the outer surface of the air inlet pipe 1 through a plurality of connecting rods 53; the baffle component 6 includes a rotating shaft 61 and a baffle 62. The air inlet pipe 1, the small air inlet channel 3 and the large air inlet channel 4 are all rectangular; each of the rotating shafts 61 extends into the corresponding air inlet channel, and a baffle 62 with a shape adapted to fit the inner wall of the corresponding air inlet channel is fixedly installed on the rotating shaft 61; each of the driving components 5 includes a micro motor 51 which is located outside the air inlet pipe 1, and the output end of the micro motor 51 is connected to the corresponding rotating shaft 61; one end of the rotating shaft 61 rotatably penetrates through the air inlet pipe 1 and is fixedly connected to the output end of the corresponding micro motor 51 through a coupling; a rotating bar 63 is fixedly sleeved on the rotating shaft 61, and the extending directions of each rotating bar 63 to both sides are the same as the extending direction of the corresponding baffle 62 surface; the rotating shaft 61 is located at the central axis of the corresponding baffle 62.

[0025] Further, the rotation of the rotating shaft 61 is driven by each micro motor 51 respectively, so that the rectangular baffles 62 arranged in the small air inlet channel 3 and the large air inlet channel 4 rotate along the small air inlet channel 3 and the large air inlet channel 4, thereby adjusting the air inlet flux of the small air inlet channel 3 and the large air inlet channel 4, reducing the labor intensity of manual adjustment. At the same time, a rotating bar 63 with the same extending direction as the corresponding baffle 62 is sleeved on one end of each rotating shaft 61. Thus, during the process of adjusting the angle of the baffle 62 in the small air inlet channel 3 and the large air inlet channel 4, the opening degree of the corresponding baffle 62 can be observed through the rotating bar 63 rotating at the same angle, which is more intuitive and convenient for operation. The utility model can respectively adjust the ventilation areas of the small air inlet channel 3 and the large air inlet channel 4, and adopts the micro motor 51 and the rotating bar 63 to realize precise control, and can realize visible operation, enhancing the intuitiveness of the operation.

[0026] The working principle of the utility model: the rotation of the rotating shaft 61 is driven by each micro motor 51 respectively, so that the rectangular baffles 62 arranged in the small air inlet channel 3 and the large air inlet channel 4 rotate along the small air inlet channel 3 and the large air inlet channel 4, thereby adjusting the air inlet flux of the small air inlet channel 3 and the large air inlet channel 4, reducing the labor intensity of manual adjustment. At the same time, a rotating bar 63 with the same extending direction as the corresponding baffle 62 is sleeved on one end of each rotating shaft 61. Thus, during the process of adjusting the angle of the baffle 62 in the small air inlet channel 3 and the large air inlet channel 4, the opening degree of the corresponding baffle 62 can be observed through the rotating bar 63 rotating at the same angle, which is more intuitive and convenient for operation.

[0027] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0028] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air duct baffle for a burner adapted for brown coal blending combustion, comprising an air inlet pipe (1) fixedly mounted on one side of a burner (2), characterized in that: A small air inlet channel (3) and a large air inlet channel (4) are provided in the air inlet pipe (1), and drive components (5) are fixedly installed on the air inlet pipe (1) outside the small air inlet channel (3) and the large air inlet channel (4), respectively, and a baffle component (6) adapted to the air inlet channel is fixedly installed on one end of each of the drive components (5); Wherein, the baffle assembly (6) comprises a rotating shaft (61) and a baffle (62); One end of the rotating shaft (61) rotates to penetrate the air inlet pipe (1) and is fixedly connected to the output end of the corresponding micro motor (51) through a coupling; Each of the rotating shafts (61) extends into the corresponding air inlet channel, and a baffle (62) having a shape that matches the inner wall of the corresponding air inlet channel is fixedly mounted on the rotating shaft (61); A rotating bar (63) is sleeved and fixedly mounted on the rotating shaft (61), and the extending direction of each rotating bar (63) to both sides is the same as the extending direction of the corresponding baffle (62) surface.

2. The air duct baffle for a burner adapted for brown coal blending according to claim 1 is characterized in that: Each of the driving components (5) comprises a micro motor (51), the micro motor (51) is located outside the air inlet pipe (1), and the output end of the micro motor (51) is connected to the corresponding rotating shaft (61).

3. The air duct baffle for a burner adapted for brown coal blending according to claim 2 is characterized in that: The micro motor (51) is fixedly mounted on one end of the mounting plate (52).

4. The air duct baffle for a burner adapted for brown coal blending according to claim 3 is characterized in that: Each of the mounting plates (52) is fixedly mounted to the outer surface of the air inlet pipe (1) via a plurality of connecting rods (53).

5. The air duct baffle for a burner adapted for brown coal blending according to claim 1 is characterized in that: The air inlet pipe (1), the small air inlet channel (3) and the large air inlet channel (4) are all rectangular.

6. The air duct baffle for a burner adapted for brown coal blending according to claim 4 is characterized in that: The rotating shaft (61) is located at the central axis of the corresponding baffle (62).

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