Rain cover for a flue gas duct

Abstract

The utility model relates to rain cover technical field, especially for a kind of rain cover for flue gas pipeline with easy installation, including outer tube, the bottom of outer tube is equipped with connecting flange, the bottom of outer tube inner wall is fixedly connected with several angle steel support frames, one end of angle steel support frame passes through roof fixed frame and extends to its outside and is fixedly connected with roof, the top of outer tube is equipped with annular passage, the middle part of outer surface of outer tube is equipped with several water inlets. The device is easy to install through the connecting flange, the roof can effectively prevent rain, and the annular passage formed by the roof and the outer tube ensures the smooth discharge of flue gas. The water inlets assist in drainage, and the equidistant distribution of the angle steel support frames improves the structural stability and reduces the impact of crosswind on smoke exhaust, stabilizes the pressure of the kiln, and improves the product pass rate.

Description

Technical Field

[0001] This utility model relates to the field of rain cover technology, specifically to a rain cover for flue gas ducts that is easy to install. Background Technology

[0002] Traditional industrial chimneys often use umbrella-shaped rain caps, which can easily create eddies in windy and rainy weather, leading to poor smoke exhaust and even backflow. This can seriously disrupt the pressure and combustion stability inside kilns or boilers, resulting in increased energy consumption and decreased product quality. Utility Model Content

[0003] The purpose of this invention is to provide a rainproof cover for flue gas ducts that is easy to install, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A rainproof cover for flue gas ducts that is easy to install, comprising an outer cylinder, a connecting flange at the bottom of the outer cylinder, a plurality of angle steel support frames fixedly connected to the bottom of the inner wall of the outer cylinder, one end of the angle steel support frame passing through the top plate fixing frame and extending to its outside and fixedly connected to the top plate, an annular channel being opened at the top of the outer cylinder, and a plurality of water inlet holes being opened in the middle of the outer surface of the outer cylinder.

[0005] The beneficial effects of this utility model are as follows: the connecting flange facilitates installation, the top plate can effectively prevent rain, and the circular channel formed by it and the outer cylinder ensures smooth exhaust of flue gas; the water inlet hole helps drainage, the equidistant distribution of the angle steel support frame improves structural stability, and can also reduce the impact of crosswinds on exhaust gas, stabilize the kiln pressure, and improve the product qualification rate.

[0006] To achieve rain protection and ensure the exhaust of smoke;

[0007] The outer cylinder and the top plate are coplanar, the diameter of the top plate is larger than the diameter of the steel chimney, and the diameter of the top plate is smaller than the diameter of the outer cylinder.

[0008] By adopting the above technical solutions, the top plate diameter adaptation design can prevent rainwater from entering the chimney, and the annular channel formed by the outer cylinder and the top plate can ensure the smooth discharge of flue gas and avoid obstruction of flue gas discharge.

[0009] To achieve auxiliary smoke extraction and structural support;

[0010] Further configuration: the top plate fixing frame is conical, the middle position of the top plate fixing frame is mesh-like, and the top plate fixing frame is fixedly connected to the middle part of the inner wall of the outer cylinder.

[0011] By adopting the above technical solution, the mesh top plate fixing frame does not obstruct the flow of flue gas, while firmly connecting the inner wall of the outer cylinder and improving the overall structural stability.

[0012] To achieve uniform stress distribution and structural stability;

[0013] Further configured such that the angle steel support frame is distributed at equal angles and equal distances at the bottom of the inner wall of the outer cylinder.

[0014] By adopting the above technical solution, the angle steel support frame is evenly distributed, which can make the top plate bear the force evenly, avoid local stress concentration, and effectively enhance the load-bearing capacity and stability of the overall structure of the rain cover.

[0015] To achieve efficient drainage and avoid water accumulation;

[0016] Further configured such that the bottom of the water inlet hole is fitted with the top of the top plate fixing frame, and the water inlet holes are distributed at equal angles and equal distances in the middle of the outer surface of the outer cylinder.

[0017] By adopting the above technical solution, the water inlet holes are fitted to the top plate fixing frame and evenly distributed, which can quickly drain rainwater from the top plate, prevent rainwater accumulation from corroding the parts, and ensure the service life of the rain cover.

[0018] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the steel chimney of this utility model after connection;

[0020] Figure 2 This is a cross-sectional schematic diagram of the present invention;

[0021] Figure 3 This is a schematic diagram of the front cross-sectional view of this utility model.

[0022] In the diagram: 1. Outer cylinder; 2. Connecting flange; 3. Angle steel support frame; 4. Top plate fixing frame; 5. Top plate; 6. Annular channel; 7. Water inlet hole. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0024] Please see Figures 1 to 3 A rainproof cover for flue gas ducts that is easy to install includes an outer cylinder 1. The bottom of the outer cylinder 1 is provided with a connecting flange 2. Several angle steel support frames 3 are fixedly connected to the bottom of the inner wall of the outer cylinder 1. One end of the angle steel support frame 3 passes through the top plate fixing frame 4 and extends to its outside and is fixedly connected to the top plate 5. An annular channel 6 is opened at the top of the outer cylinder 1. Several water inlet holes 7 are opened in the middle of the outer surface of the outer cylinder 1.

[0025] In this embodiment, as Figure 1 As shown, an annular channel 6 is provided at the top of the outer cylinder 1, and several water inlet holes 7 are provided in the middle of the outer surface of the outer cylinder 1. The top plate fixing frame 4 is conical, and the middle position of the top plate fixing frame 4 is mesh-like. The top plate fixing frame 4 is fixedly connected to the middle of the inner wall of the outer cylinder 1. The bottom of the water inlet hole 7 is attached to the top of the top plate fixing frame 4. The water inlet holes 7 are distributed at equal angles and equal distances in the middle of the outer surface of the outer cylinder 1.

[0026] In this embodiment, as Figure 2 As shown, the bottom of the outer cylinder 1 is provided with a connecting flange 2. Several angle steel support frames 3 are fixedly connected to the bottom of the inner wall of the outer cylinder 1. One end of the angle steel support frame 3 passes through the top plate fixing frame 4 and extends to its outside and is fixedly connected to the top plate 5. An annular channel 6 is opened at the top of the outer cylinder 1. The top of the outer cylinder 1 and the top of the top plate 5 are coplanar. The diameter of the top plate 5 is larger than the diameter of the steel chimney and smaller than the diameter of the outer cylinder 1. The top plate fixing frame 4 is conical and has a mesh in the middle. The top plate fixing frame 4 is fixedly connected to the middle of the inner wall of the outer cylinder 1. The angle steel support frames 3 are distributed at equal angles and equal distances at the bottom of the inner wall of the outer cylinder 1.

[0027] In this embodiment, as Figure 3 As shown, several angle steel support frames 3 are fixedly connected to the bottom of the inner wall of the outer cylinder 1. One end of the angle steel support frame 3 passes through the top plate fixing frame 4 and extends to its outside and is fixedly connected to the top plate 5. The top of the outer cylinder 1 and the top of the top plate 5 are coplanar. The diameter of the top plate 5 is larger than the diameter of the steel chimney and smaller than the diameter of the outer cylinder 1. The top plate fixing frame 4 is conical and has a mesh in the middle. The top plate fixing frame 4 is fixedly connected to the middle of the inner wall of the outer cylinder 1. The angle steel support frames 3 are distributed at equal angles and equal distances at the bottom of the inner wall of the outer cylinder 1.

[0028] The working process of this easy-to-install rain cover for flue gas ducts is as follows;

[0029] First, the connecting flange 2 is connected to the flange on the steel chimney. After the hot smoke flows out of the steel chimney, it enters the area below the top plate 5 through the mesh structure in the middle of the top plate fixing frame 4, and then exits through the annular channel 6. The total cross-sectional area of ​​the annular channel 6 is calculated to be equivalent to the cross-sectional area of ​​the steel chimney body, which avoids additional resistance to the flow of hot smoke due to the sudden narrowing of the channel, ensuring smooth discharge of hot smoke. The annular channel 6 is 360° vertically downward, so no matter which direction the wind blows from, it is difficult to directly block the entire annular gap, and it can always find a path to discharge, thereby effectively reducing the negative impact of wind on the pressure inside the furnace.

[0030] When it rains, rainwater falls through the annular channel 6 onto the top plate fixing frame 4, and then flows out through the water inlet 7 into the rain cover, preventing rainwater from entering the steel chimney.

[0031] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0032] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A rainproof cover for flue gas ducts that is easy to install, comprising an outer cylinder (1), characterized in that; The bottom of the outer cylinder (1) is provided with a connecting flange (2), and a number of angle steel support frames (3) are fixedly connected to the bottom of the inner wall of the outer cylinder (1); one end of the angle steel support frame (3) passes through the top plate fixing frame (4) and extends to its outside and is fixedly connected to the top plate (5); an annular channel (6) is opened at the top of the outer cylinder (1), and a number of water inlet holes (7) are opened in the middle of the outer surface of the outer cylinder (1).

2. The rainproof cover for flue gas ducts that is easy to install as described in claim 1, characterized in that; The top of the outer cylinder (1) and the top of the top plate (5) are coplanar. The diameter of the top plate (5) is larger than the diameter of the steel chimney, and the diameter of the top plate (5) is smaller than the diameter of the outer cylinder (1).

3. A rainproof cover for flue gas ducts that is easy to install as described in claim 1, characterized in that; The top plate fixing frame (4) is conical, and the middle part of the top plate fixing frame (4) is mesh-like. The top plate fixing frame (4) is fixedly connected to the middle part of the inner wall of the outer cylinder (1).

4. A rainproof cover for flue gas ducts that is easy to install as described in claim 1, characterized in that; The angle steel support frame (3) is distributed at equal angles and at equal distances at the bottom of the inner wall of the outer cylinder (1).

5. A rainproof cover for flue gas ducts that is easy to install as described in claim 1, characterized in that; The bottom of the water inlet hole (7) is attached to the top of the top plate fixing frame (4), and the water inlet hole (7) is distributed at equal angles and equal distances in the middle of the outer surface of the outer cylinder (1).

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