Flue gas flow uniform distribution plate device
By installing multiple baffles at the bends in the flue, the problem of uneven airflow distribution in the bend area of the flue is solved, the stability of flue gas flow is achieved and dust deposition is prevented, and manufacturing costs are reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINCHUAN GROUP NICKEL COBALT CO LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-26
AI Technical Summary
Vortex zones are easily formed in the bends of the flue, resulting in uneven airflow distribution. Some airflow collides with the flue wall, causing soot deposition and blockage, affecting flue gas flow and increasing labor intensity.
Multiple inclined guide plates are installed at the junction of the horizontal and vertical sections of the flue, including the first guide plate, the second guide plate, the third guide plate and the fourth guide plate. Through the multiple guidance of these guide plates, the flow velocity of the flue gas is increased and the deposition of soot is prevented.
It effectively prevents soot from accumulating in the flue, ensures smooth flue gas flow, reduces cleaning labor intensity, and lowers manufacturing costs.
Smart Images
Figure CN224284671U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of smoke exhaust equipment and relates to a flue gas airflow uniform distribution plate device. Background Technology
[0002] As a crucial channel for flue gas extraction, dust collection, and treatment, flue gas ducts play a vital role in ensuring unobstructed flue gas flow, which is essential for environmental protection and normal production in metallurgical furnaces. However, in the bend areas of the flue gas duct, dust-laden gas, due to its own inertia and centripetal force, deviates from its original flow along the inner wall of the flue and forms a vortex zone in a certain area after the bend. Under the influence of inertia, some of the airflow collides with the inner wall of the flue gas swirling outward, changing its flow direction and forming a secondary flow. All of these factors disturb the airflow, affecting the uniformity of airflow distribution. This results in lower gas velocity in local areas near the inner side of the flue gas swirling inward, leading to dust deposition. At the same time, due to inertia, some dust-laden airflow collides with the outer wall of the flue gas swirling outward, and some dust adheres to the flue gas wall to a certain thickness. Under its own gravity, it falls into the lower part of the flue gas duct, clogging it and hindering flue gas flow. This requires regular cleaning of the flue gas by dedicated personnel, impacting environmental protection and increasing labor intensity. Utility Model Content
[0003] The purpose of this invention is to provide a flue gas flow uniform distribution plate device to address the problems existing in the prior art.
[0004] Therefore, the present invention adopts the following technical solution:
[0005] A flue gas flow distribution plate device includes a flue, which includes a horizontal section and a vertical section. The upper inner wall of the horizontal section near the vertical section is provided with a first guide plate, a second guide plate, a third guide plate and a fourth guide plate arranged in an inclined manner. The lower part of the first guide plate has a rectangular structure, and the lower parts of the second, third and fourth guide plates have a fan-shaped structure.
[0006] Furthermore, the horizontal section has an arc-shaped cross surface on its upper side, and the vertical section has a rectangular cross-section.
[0007] Furthermore, the first guide vane forms an angle of 10-40 degrees with the horizontal plane.
[0008] Furthermore, the second guide vane forms an angle of 30-60 degrees with the horizontal plane.
[0009] Furthermore, the third and fourth guide plates are arranged parallel to each other with respect to the second guide plate.
[0010] Furthermore, the area of the second guide plate is larger than the area of the first guide plate.
[0011] Furthermore, the curvature of the fourth guide plate is 70-90 degrees.
[0012] Furthermore, the curvature of the third guide plate is 50-70 degrees.
[0013] Furthermore, the curvature of the second guide plate is 20-40 degrees.
[0014] The beneficial effects of this utility model are as follows: multiple inclined guide plates are set on the upper side of the horizontal section of the flue. Through multiple guide plates, the flue gas on the upper side of the horizontal section of the flue is guided to the lower side, which increases the flow velocity of the flue gas on the upper side and effectively prevents soot from accumulating in the flue and clogging the flue, thus affecting the exhaust. The area of the guide plates gradually increases, which effectively prevents too much flue gas from being guided at one time, thus affecting the normal flow of flue gas on the lower side of the horizontal section. The structure is simple and the manufacturing cost is low. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 for Figure 1 Sectional view along the middle AA direction;
[0017] In the diagram, 1-flue, 101-horizontal section, 102-vertical section, 2-first guide vane, 3-second guide vane, 4-third guide vane, and 5-fourth guide vane. Detailed Implementation
[0018] The present invention will now be described in detail with reference to the accompanying drawings:
[0019] like Figure 1 and 2As shown, a flue gas flow distribution plate device includes an L-shaped flue 1, which comprises a horizontal section 101 and a vertical section 102. The upper cross surface of the horizontal section 101 is arc-shaped, and the cross-section of the vertical section 102 is rectangular. A first guide plate 2, a second guide plate 3, a third guide plate 4, and a fourth guide plate 5 are sequentially arranged at an inclined angle on the upper inner wall of the horizontal section 101 near the vertical section 102. The first guide plate 2 has a rectangular structure and forms an angle of 10-40 degrees with the horizontal plane. In this embodiment, the first guide plate 2 is rectangular with the horizontal plane. The first guide vane 2 has a thickness of 10mm and forms a 30-degree angle with the horizontal plane. The lower parts of the second guide vane 3, the third guide vane 4, and the fourth guide vane 5 are all fan-shaped structures, and the bottom ends of the second guide vane 3, the third guide vane 4, and the fourth guide vane 5 are all located in the same horizontal plane (i.e., the bottom ends of the second guide vane 3, the third guide vane 4, and the fourth guide vane 5 are flush). Specifically, the second guide vane 3 forms a 45-degree angle with the horizontal plane, and the area of the second guide vane 3 is larger than the area of the first guide vane 2. The arc of the lower fan shape of the second guide vane 3 is 20-40 degrees. In this embodiment, a 30-degree arc is used. The third guide plate 4 and the second guide plate 3 are arranged parallel to each other. The arc of the lower fan-shaped section of the third guide plate 4 is 50-80 degrees, and the area of the third guide plate 4 is larger than that of the second guide plate 3. In this embodiment, the arc of the lower fan-shaped section of the third guide plate 4 is 60 degrees. The fourth guide plate 5 and the second guide plate 3 are arranged parallel to each other. The area of the fourth guide plate 5 is larger than that of the third guide plate 4, and the arc of the lower fan-shaped section of the fourth guide plate 5 is 70-90 degrees. In this embodiment, the arc of the lower fan-shaped section of the fourth guide plate 5 is 90 degrees.
[0020] The working principle of this utility model is as follows:
[0021] When the flue gas flows upward from the vertical section 102 of the flue duct 1 and enters the horizontal section 101, the flow pattern of the flue gas changes at the junction of the horizontal section 101 and the vertical section 102. Due to the effect of the dust-laden flue gas flow distribution plate, the gas passes through the first guide plate 2, the second guide plate 3, the third guide plate 4, and the fourth guide plate 5 in sequence. This effectively reduces the formation of a low-speed zone on the upper side of the horizontal section 101 after the airflow turns, thus slowing down the flue gas velocity in the low-speed zone. Through the first guide plate 2, the second guide plate 3, the third guide plate 4, and the fourth guide plate 5, the flue gas on the upper side of the horizontal section 101 can flow downward, increasing the flow velocity of the flue gas on the upper side. By guiding the flow through multiple guide plates and gradually increasing the guiding area, the guiding effect can be effectively improved, preventing excessive flue gas from being guided at one time, which would affect the normal flow of flue gas on the lower side of the horizontal section 101. This effectively prevents the deposition of dust-laden flue gas in the flue duct 1 and ensures the exhaust of flue duct 1.
Claims
1. A flue gas flow distribution plate device, comprising a flue (1), the flue (1) comprising a horizontal section (101) and a vertical section (102), characterized in that, The upper inner wall of the horizontal section (101) near the vertical section (102) is provided with a first guide plate (2), a second guide plate (3), a third guide plate (4) and a fourth guide plate (5) arranged in an inclined manner. The lower part of the first guide plate (2) has a rectangular structure, and the lower parts of the second guide plate (3), the third guide plate (4) and the fourth guide plate (5) have a fan-shaped structure.
2. The flue gas flow uniform distribution plate device according to claim 1, characterized in that, The horizontal section (101) has an arc-shaped cross surface on its upper side, and the vertical section (102) has a rectangular cross-section.
3. The flue gas flow uniform distribution plate device according to claim 1, characterized in that, The first guide plate (2) forms an angle of 10-40 degrees with the horizontal plane.
4. The flue gas flow uniform distribution plate device according to claim 1, characterized in that, The second guide plate (3) is at an angle of 30-60 degrees.
5. The flue gas flow uniform distribution plate device according to claim 1, characterized in that, The third guide plate (4) and the fourth guide plate (5) are arranged parallel to each other with the second guide plate (3).
6. The flue gas flow uniform distribution plate device according to claim 1, characterized in that, The area of the second guide plate (3) is larger than the area of the first guide plate (2).
7. The flue gas flow uniform distribution plate device according to claim 1, characterized in that, The curvature of the fourth guide plate (5) is 70-90 degrees.
8. The flue gas flow uniform distribution plate device according to claim 1, characterized in that, The curvature of the third guide plate (4) is 50-80 degrees.
9. The flue gas flow uniform distribution plate device according to claim 1, characterized in that, The curvature of the second guide plate (3) is 20-40 degrees.