Self-stable-combustion staged-combustion pulverized coal burner

Abstract

The utility model discloses a pulverized coal burner with self-stable combustion and staged combustion. The pulverized coal burner comprises an adjusting part arranged in an elbow pipe; the adjusting part comprises a plurality of groups of partition plates which are distributed on the inner wall of one side far away from the circle center of the elbow pipe; an adjusting part is further arranged in the elbow pipe and used for adjusting the inclination degree of the partition plate so as to adjust the amount of the pulverized coal entering the combustion part. According to the utility model, through the arrangement of the partition plate and the adjusting part, the equipment can adjust the pulverized coal path and the proportion of pulverized coal entering the combustion part and the exhaust gas pipeline through the adjusting part according to the combustion condition in the furnace, so that the conditions of pulverized coal blockage, pulverized coal accumulation and insufficient combustion are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of burners, in particular to a pulverized coal burner with self-stable combustion and staged combustion. Background Art

[0002] At present, pulverized coal burners generally have problems such as incomplete pulverized coal combustion, difficulty in achieving internal combustion, inability of the burner to achieve self-stable combustion in an oil-free state, and the same burner cannot burn different types of coal to achieve energy optimization. The reasons are: the internal conveying space of the pulverized coal burner is small. In order to prevent powder blockage, the powder feeding speed needs to be fast. However, if the powder feeding speed is too fast, the pulverized coal combustion time will be insufficient, especially for low-volatile coal types. The pulverized coal burnout rate is low, which may cause a high carbon content in the fly ash after the pulverized coal is burned; if the powder feeding speed in the primary pulverized coal air duct is slowed down, this method will easily cause powder accumulation in the primary pulverized coal air duct, blocking the pipeline and seriously affecting the operation of the boiler.

[0003] In view of the above problems, a pulverized coal burner with self-stabilizing and staged combustion is proposed to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a pulverized coal burner with self-stabilizing combustion and staged combustion in view of the above-mentioned shortcomings.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solution: a pulverized coal burner with self-stable combustion and staged combustion, comprising:

[0006] An adjusting component arranged in the elbow pipe;

[0007] The adjusting component includes a plurality of groups of baffles, and the plurality of groups of baffles are distributed on the inner wall of one side away from the center of the elbow pipe;

[0008] An adjusting part is also provided in the elbow pipe, and the adjusting part is used to adjust the inclination of the partition plate to adjust the amount of coal powder entering the combustion part.

[0009] Furthermore, a plurality of groups of partitions are distributed on the inner wall of the elbow pipe in a semi-ring shape.

[0010] Furthermore, a hinged part hinged to the inner wall of the elbow pipe is provided at one end of the plurality of partitions away from the combustion part, so that the other end of the partition can be tilted and expanded to change the inner diameter of the combustion part to adjust the coal powder path.

[0011] Furthermore, a connecting layer is provided between the plurality of groups of partitions, and the connecting layer is a flexible layer.

[0012] Furthermore, the adjustment part includes a transmission rod, which is arc-shaped and corresponds to the distribution paths of the multiple groups of partitions;

[0013] A connecting piece is arranged on one side of the transmission rod close to the partition plate, and the connecting piece is used to drive the partition plate to swing when the transmission rod moves.

[0014] Furthermore, a sliding groove is provided on one side of the partition close to the connecting member, and a sliding member extending into the sliding groove is provided on the connecting member.

[0015] Further, the adjustment part also includes an adjustment part arranged on the transmission rod and extending to the outside of the elbow pipe;

[0016] The adjusting part is fixedly connected to the transmission rod, and the elbow pipe is provided with an adjusting unit for driving the adjusting part to move.

[0017] The beneficial effects of the utility model are embodied in:

[0018] The utility model, through the arrangement of the partition and the adjusting part, the equipment can adjust the pulverized coal path through the adjusting component according to the combustion situation in the furnace, and adjust the proportion of the pulverized coal entering the combustion part and the exhaust gas pipeline, thereby avoiding the situations of pulverized coal blockage, pulverized coal accumulation and insufficient combustion. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional view of the utility model;

[0020] Figure 2 It is a three-dimensional schematic diagram of the utility model;

[0021] Figure 3 For the utility model Figure 1 The enlarged schematic diagram at A in the middle;

[0022] Figure 4 This is a schematic diagram of the partition structure of the utility model;

[0023] Figure 5 It is a structural schematic diagram of another embodiment of the partition of the utility model.

[0024] In the figure:

[0025] 1. Adjustment component; 11. Partition plate; 12. Hinged part; 13. Slideway;

[0026] 2. Elbow pipe;

[0027] 3. Combustion unit; 31. Exhaust gas pipeline;

[0028] 4. Adjustment part; 41. Transmission rod; 42. Connecting part; 43. Sliding part; 44. Adjustment mechanism. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-5 The utility model discloses a pulverized coal burner with self-stable combustion and staged combustion, comprising:

[0031] An adjusting component 1 is arranged in the elbow pipe 2;

[0032] The regulating component 1 includes a plurality of baffles 11, and the plurality of baffles 11 are distributed on the inner wall of one side away from the center of the elbow pipe 2;

[0033] An adjusting portion 4 is also provided in the elbow pipe 2 , and the adjusting portion 4 is used to adjust the inclination of the partition 11 to adjust the amount of coal powder entering the combustion portion 3 .

[0034] In the present application, by setting the partition 11 and the adjusting part 4, the device can adjust the coal powder path through the adjusting component 1 according to the combustion conditions in the furnace, and adjust the coal powder to Combustion unit 3 and exhaust gas pipeline 31 ratio, thereby avoiding powder blockage, powder accumulation and insufficient combustion.

[0035] like Figure 3-4 As shown, multiple groups of the baffles 11 are distributed in a semi-circular manner on the inner wall of the elbow pipe 2, and multiple groups of the baffles 11 are distributed on the inner wall on one side away from the center of the elbow pipe 2. The above arrangement is because when the coal powder passes through the elbow, since the weight of the coal powder is greater than that of the air, under the action of centrifugal force, most of the coal powder will flow along the side wall away from the center of the elbow pipe 2, and then enter the exhaust gas pipe 31. In order to achieve the purpose of adjusting the above ratio, the baffle 11 is arranged there.

[0036] It should be noted that one end of the plurality of partitions 11 away from the combustion section 3 is provided with a hinge 12 hinged to the inner wall of the elbow pipe 2, so that the other end of the partition 11 can be tilted and expanded to change the inner diameter of the combustion section 3 to adjust the coal powder path.

[0037] In order to prevent coal powder from entering between the partitions 11 and causing blockage, a connecting layer is provided between the plurality of groups of the partitions 11, and the connecting layer is a flexible layer.

[0038] It should be supplemented that the adjustment part 4 includes a transmission rod 41, and the transmission rod 41 is arc-shaped and corresponds to the distribution path of the multiple groups of partitions 11;

[0039] A connecting member 42 is disposed on one side of the transmission rod 41 close to the partition plate 11 . The connecting member 42 is used to drive the partition plate 11 to swing when the transmission rod 41 moves.

[0040] A sliding groove 13 is formed on one side of the partition plate 11 close to the connecting member 42 , and a sliding member 43 extending into the sliding groove 13 is disposed on the connecting member 42 .

[0041] Through the above-mentioned structural setting, the adjusting part 4 is arranged between the partition 11 and the inner wall of the elbow pipe 2. When the adjusting part 4 moves toward the hinge point between the partition 11 and the elbow pipe 2, the angle between the partition 11 and the elbow pipe 2 can be increased, thereby achieving the purpose of adjusting the inclination angle of the partition 11.

[0042] Finally, it should be added that the adjustment part 4 also includes an adjustment mechanism 44 disposed on the transmission rod 41 and extending to the outside of the elbow pipe 2;

[0043] The adjusting mechanism 44 is fixedly connected to the transmission rod 41 , and an adjusting unit for driving the adjusting mechanism 44 to move is disposed on the elbow pipe 2 .

[0044] When the control unit in the present application is used, the powder feeding speed can be flexibly adjusted according to the combustion conditions in the furnace, and the angle of the partition 11 in the present application can be correspondingly adjusted to prevent the coal powder from contacting the side wall of the elbow pipe 2 too early, thereby adjusting the coal powder to enter the furnace. Combustion section 3 and exhaust gas pipeline 31 (the problem is the same as above, and the figure 31 can also be marked to the exhaust gas pipeline) ratio, and can also avoid the occurrence of Exhaust gas pipeline 31 Powder accumulates, clogging pipes and affecting boiler operation.

[0045] It should be noted that the control unit can be an electric push rod or other related equipment, which can be adjusted according to the powder feeding speed, thereby changing the angle of the partition 11 and changing the coal powder entering the combustion part 3 and Exhaust gas pipeline 31 proportion.

[0046] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0047] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0048] In addition, "plurality" means two or more.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-stabilizing and staged combustion pulverized coal burner, characterized in that: include: An adjusting component (1) is arranged inside the elbow pipe (2); The regulating component (1) comprises a plurality of groups of partitions (11), and the plurality of groups of partitions (11) are distributed on the inner wall of a side away from the center of the elbow pipe (2); An adjusting portion (4) is also provided in the elbow pipe (2), and the adjusting portion (4) is used to adjust the inclination of the partition plate (11) so as to adjust the amount of coal powder entering the combustion portion (3).

2. A pulverized coal burner with self-stabilizing staged combustion according to claim 1, characterized in that: A plurality of groups of partitions (11) are distributed in a semi-ring shape on the inner wall of the elbow pipe (2).

3. The self-stabilizing and staged combustion pulverized coal burner according to claim 1, characterized in that: A hinge (12) hinged to the inner wall of the elbow pipe (2) is provided at one end of the plurality of groups of partitions (11) away from the combustion section (3), so that the other end of the partition (11) can be tilted and expanded to change the inner diameter of the combustion section (3) to adjust the coal powder path.

4. The self-stabilizing and staged combustion pulverized coal burner according to claim 1, characterized in that: A connecting layer is provided between the plurality of groups of partitions (11), and the connecting layer is a flexible layer.

5. The self-stabilizing and staged combustion pulverized coal burner according to claim 2, characterized in that: The adjusting portion (4) comprises a transmission rod (41), the transmission rod (41) is arc-shaped and corresponds to the distribution paths of the plurality of groups of partitions (11); A connecting piece (42) is provided on one side of the transmission rod (41) close to the partition plate (11), and the connecting piece (42) is used to drive the partition plate (11) to swing when the transmission rod (41) moves.

6. A pulverized coal burner with self-stabilizing staged combustion according to claim 5, characterized in that: A sliding groove (13) is provided on one side of the partition (11) close to the connecting member (42), and a sliding member (43) extending into the interior of the sliding groove (13) is provided on the connecting member (42).

7. A pulverized coal burner with self-stabilizing staged combustion according to claim 6, characterized in that: The adjusting portion (4) further comprises an adjusting mechanism (44) which is arranged on the transmission rod (41) and extends to the outside of the elbow pipe (2); The adjusting mechanism (44) is fixedly connected to the transmission rod (41), and an adjusting unit for driving the adjusting mechanism (44) to move is provided on the elbow pipe (2).

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