Airflow distribution device arranged in special-shaped part

Abstract

The utility model discloses an airflow distribution device arranged in a special-shaped piece, which comprises a feed pipe, an expansion pipe and a discharge pipe, one end of the expansion pipe is connected with the feed pipe, the other end of the expansion pipe is connected with the discharge pipe, the pipe diameter of the feed pipe is smaller than that of the discharge pipe, the pipe diameter of the expansion pipe is gradually enlarged towards the direction of the discharge pipe, and the discharge pipe is connected with the discharge pipe. An air flow distribution mechanism is arranged in the expansion pipe and comprises a first turbulent flow pipe set and a second turbulent flow pipe set, and the first turbulent flow pipe set and the second turbulent flow pipe set are staggered by a certain distance in the feeding direction of the expansion pipe. According to the utility model, airflow distribution devices such as the spoiler pipes are arranged in the special-shaped piece in a staggered manner, so that better speed distribution of an equipment inlet examination section can be ensured, the equipment performance is improved, the frontal scouring of airflow, smoke dust and the airflow distribution devices is reduced, and the service life of the airflow distribution devices is prolonged; and the turbulent flow pipe can be used as a pipe support to reinforce and support the special-shaped part, so that the strength of the special-shaped part is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dust collectors, in particular to the technical field of airflow distribution devices. Background Art

[0002] The flue and environmental protection equipment often need to be connected by a special-shaped expansion pipe. In order to achieve good airflow distribution at the equipment inlet test section, guide plates in the longitude and latitude directions are generally arranged in the special-shaped parts. However, the guide plates have a greater impact on the subsequent flow field, and the interface is obvious, making it difficult to achieve full mixing of the flue gas flow, and the airflow is not easy to diffuse in place. In addition, it is difficult to correctly design and lay out the guide plates in the square and round pipes due to the existence of related lines. Another airflow distribution plate device with circular or square holes arranged in the special-shaped parts has a good airflow distribution effect at the equipment inlet test section, but the local resistance loss is large and the wear is also serious. In order to ensure its strength, it needs to be strengthened locally, which will cause more consumables. Utility Model Content

[0003] The purpose of the utility model is to solve the problems in the prior art and to provide an airflow distribution device arranged in a special-shaped part, which can solve the above problems.

[0004] To achieve the above-mentioned purpose, the utility model proposes an airflow distribution device arranged in a special-shaped part, including a feed pipe, an expansion pipe and a discharge pipe, one end of the expansion pipe is connected to the feed pipe, and the other end is connected to the discharge pipe, the diameter of the feed pipe is smaller than the diameter of the discharge pipe, and the diameter of the expansion pipe gradually expands toward the direction of the discharge pipe, an airflow distribution mechanism is provided in the expansion pipe, and the airflow distribution mechanism includes a first spoiler tube group and a second spoiler tube group, and the first spoiler tube group and the second spoiler tube group are staggered a certain distance in the feeding direction of the expansion tube.

[0005] Preferably, the first spoiler tube group is composed of a plurality of first spoiler tube members distributed in parallel and at equal distances, and the second spoiler tube group is composed of a plurality of second spoiler tube members distributed in parallel and at equal distances.

[0006] Preferably, two ends of the first spoiler tube are fixed to the inside of the expansion tube, and two ends of the second spoiler tube are fixed to the inner wall of the expansion tube.

[0007] Preferably, the first spoiler tube and the second spoiler tube are arranged perpendicularly.

[0008] Preferably, the feed pipe is a round pipe, and the discharge pipe is a square pipe.

[0009] The beneficial effects of the utility model are as follows: the utility model adopts staggered arrangement of spoiler pipes and other airflow distribution devices in the special-shaped parts, which can ensure a more optimal velocity distribution at the equipment inlet assessment section, improve equipment performance, and at the same time reduce the frontal scouring of airflow, smoke and airflow distribution devices, thereby extending their service life; and the spoiler pipe can be used as a pipe support to strengthen the support of the special-shaped parts, increase the strength of the special-shaped parts, achieve multiple functions with one piece, and save a certain amount of consumables; the spoiler pipe is inside the special-shaped parts, especially in the square and round connecting pipes, which is more convenient and reliable to install than the guide plate, and has smaller local resistance loss than the circular hole or square hole airflow distribution plate device, thereby achieving energy saving and consumption reduction to a certain extent.

[0010] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a structural diagram of embodiment 1 of the utility model;

[0012] Figure 2 This is a structural diagram of embodiment 2 of the utility model;

[0013] Figure 3 It is a partial enlarged schematic diagram of Example 1;

[0014] Figure 4 It is the mid-section velocity vector diagram of the utility model;

[0015] Figure 5 This is a cloud diagram of the velocity distribution at the inlet of the first layer of catalyst of the present invention.

[0016] In the figure: 1-feeding pipe, 2-expansion pipe, 3-discharging pipe, 4-first spoiler pipe group, 5-second spoiler pipe group, 6-first spoiler pipe member, 7-second spoiler pipe member. DETAILED DESCRIPTION

[0017] Embodiment 1:

[0018] See also Figure 1 , 3, an air flow distribution device arranged in a special-shaped part, comprising a feed pipe 1, an expansion pipe 2 and a discharge pipe 3, one end of the expansion pipe 2 is connected to the feed pipe 1, and the other end is connected to the discharge pipe 3, the diameter of the feed pipe 1 is smaller than the diameter of the discharge pipe 3, and the diameter of the expansion pipe 2 gradually expands toward the direction of the discharge pipe 3, an air flow distribution mechanism is arranged in the expansion pipe 2, and the air flow distribution mechanism comprises a first spoiler tube group 4 and a second spoiler tube group 5, the first spoiler tube group 4 and the second spoiler tube group 5 are staggered by a certain distance in the feeding direction of the expansion pipe 2, the first spoiler tube group 4 is composed of a plurality of parallel and equidistantly distributed first spoiler tube members 6, the second spoiler tube group 5 is composed of a plurality of parallel and equidistantly distributed second spoiler tube members 7, the two ends of the first spoiler tube member 6 are fixed to the inside of the expansion pipe 2, the two ends of the second spoiler tube member 7 are fixed to the inner wall of the expansion pipe 2, the first spoiler tube member 6 and the second spoiler tube member 7 are vertically arranged, the feed pipe 1 is a round tube, and the discharge pipe 3 is a square tube. The first spoiler pipe is installed vertically, and the second spoiler pipe is installed horizontally.

[0019] Embodiment 2:

[0020] See also Figure 2 , an air flow distribution device arranged in a special-shaped part, comprising a feed pipe 1, an expansion pipe 2 and a discharge pipe 3, one end of the expansion pipe 2 is connected to the feed pipe 1, and the other end is connected to the discharge pipe 3, the diameter of the feed pipe 1 is smaller than the diameter of the discharge pipe 3, and the diameter of the expansion pipe 2 gradually expands toward the direction of the discharge pipe 3, an air flow distribution mechanism is arranged in the expansion pipe 2, and the air flow distribution mechanism comprises a first spoiler tube group 4 and a second spoiler tube group 5, the first spoiler tube group 4 and the second spoiler tube group 5 are staggered by a certain distance in the feeding direction of the expansion pipe 2, the first spoiler tube group 4 is composed of a plurality of parallel and equidistantly distributed first spoiler tube members 6, the second spoiler tube group 5 is composed of a plurality of parallel and equidistantly distributed second spoiler tube members 7, the two ends of the first spoiler tube member 6 are fixed to the inside of the expansion pipe 2, the two ends of the second spoiler tube member 7 are fixed to the inner wall of the expansion pipe 2, the first spoiler tube member 6 and the second spoiler tube member 7 are vertically arranged, the feed pipe 1 is a round tube, and the discharge pipe 3 is a square tube. The first spoiler pipe is installed horizontally, and the second spoiler pipe is installed vertically.

[0021] Computational fluid dynamics software CFD is used to carry out flow field simulation tests to ensure the rationality of the number, specifications and layout of the spoiler tubes.

[0022] from Figure 4 and Figure 5 It can be seen that the use of staggered spoiler tubes and other airflow distribution devices in special-shaped parts can ensure a better velocity distribution at the equipment inlet test section and improve equipment performance.

[0023] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. An air flow distribution device arranged in a special-shaped part, characterized in that: The invention comprises a feed pipe (1), an expansion pipe (2) and a discharge pipe (3), wherein one end of the expansion pipe (2) is connected to the feed pipe (1), and the other end is connected to the discharge pipe (3), the diameter of the feed pipe (1) is smaller than the diameter of the discharge pipe (3), and the diameter of the expansion pipe (2) gradually increases in the direction of the discharge pipe (3), and an airflow distribution mechanism is arranged inside the expansion pipe (2), wherein the airflow distribution mechanism comprises a first spoiler pipe group (4) and a second spoiler pipe group (5), and the first spoiler pipe group (4) and the second spoiler pipe group (5) are staggered by a certain distance in the feeding direction of the expansion pipe (2).

2. The air flow distribution device arranged in a special-shaped member according to claim 1, characterized in that: The first spoiler tube group (4) is composed of a plurality of first spoiler tube components (6) distributed in parallel and at equal distances, and the second spoiler tube group (5) is composed of a plurality of second spoiler tube components (7) distributed in parallel and at equal distances.

3. The air flow distribution device arranged in the special-shaped member according to claim 2, characterized in that: The two ends of the first flow-destroying tube member (6) are fixed to the inside of the expansion tube (2), and the two ends of the second flow-destroying tube member (7) are fixed to the inner wall of the expansion tube (2).

4. The air flow distribution device arranged in a special-shaped member according to claim 2, characterized in that: The first spoiler tube member (6) and the second spoiler tube member (7) are arranged vertically.

5. The air flow distribution device arranged in a special-shaped member according to claim 1, characterized in that: The feed pipe (1) is a round pipe, and the discharge pipe (3) is a square pipe.

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