Roof chimney structure

Abstract

The utility model discloses a roof chimney structure which comprises a plurality of exhaust pipes connected with dust removal equipment at the top of a building, one side of the exhaust pipe at the topmost part is provided with a detection port communicated with the exhaust pipe, the exhaust pipes are provided with an exhaust pipe tower, the bottom of the exhaust pipe tower is provided with a mounting foot plate, and the mounting foot plate is fixedly arranged at the top of the building. One side of the exhaust pipe tower is connected with a ladder stand, and a ladder stand protection frame is arranged on the upper portion of the ladder stand. The exhaust pipe tower is effectively supported on the periphery of the exhaust pipe to form strong supporting performance on the exhaust pipe, so that the connecting position of the exhaust pipe is higher in stability when resisting strong wind weather, and the exhaust pipe is protected. A standing platform is also formed at the top of the exhaust pipe tower; and through the arrangement of the detection platform protection frame, all-round anti-falling protection can be carried out on inspectors, so that the safety is higher in the process of detecting the opening sealing plate and inspecting the smoke dust accumulation amount of the inner wall of the exhaust pipe, and the whole process is convenient to operate.

Description

Technical Field

[0001] The utility model belongs to the technical field of chimneys, and in particular relates to a chimney structure on a roof. Background Art

[0002] Industrial rooftop chimneys are widely used in industrial exhaust systems in shipbuilding, automobile, foundry, non-ferrous metal processing, light industry and medicine and other industries. They are usually installed on the top of the building and connected to the fan outlet on the top of the building to discharge the filtered flue gas into the external environment.

[0003] The existing chimney on the roof of an industrial building is composed of a combined exhaust pipe, with a rain cap on the top of the exhaust pipe and an inspection port on one side of the exhaust pipe for checking the dust collection inside the pipe. The inspection port is usually set on the top exhaust pipe because the amount of smoke accumulated in the pipe gradually decreases from bottom to top during the long-term smoke exhaust process. That is to say, when checking the top exhaust pipe, if it is found that the amount of smoke accumulated on the inner wall of the top exhaust pipe is large, it can be proved that the amount of smoke accumulated on the inner wall of the exhaust pipe at all nodes is large, and the pipe wall needs to be cleaned.

[0004] In order to avoid exhausting smoke close to the building area, each section of the exhaust duct is generally set to be two meters long, and at least four sections are set. In this case, the traditional ladder setting is used, which is not safe every time the inspectors climb up to inspect. In addition, in strong winds, the connection strength of the exhaust duct is tested more. Therefore, it is necessary to set up a rooftop chimney that is easy to check the amount of smoke accumulation on the pipe wall through the inspection port and has higher safety to meet actual needs. Utility Model Content

[0005] The utility model aims to provide a rooftop chimney, and the technical problem to be solved is to provide an industrial rooftop chimney which is convenient for checking the smoke accumulation on the pipe wall through an inspection port and has high operational safety.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a roof chimney structure, comprising a plurality of exhaust ducts connected to a dust removal device on the top of a building, a detection port connected to the exhaust duct is arranged on one side of the top exhaust duct, an exhaust duct tower is arranged on the exhaust duct, a mounting foot plate is arranged at the bottom of the exhaust duct tower and the mounting foot plate is fixedly arranged on the top of the building, a ladder is connected to one side of the exhaust duct tower, a ladder guard frame is arranged on the upper part of the ladder, a detection platform guard frame is arranged on the top of the exhaust duct tower and near the detection port, and the inlet of the detection platform guard frame corresponds to the inlet of the ladder guard frame;

[0007] The exhaust pipe at the top is connected to a noise reduction mechanism, which is used to reduce wind noise during the process of exhausting smoke on the exhaust pipe.

[0008] In order to effectively drain the water accumulated at the bottom of the exhaust pipe, preferably, a water receiving tray is provided at the bottom of the exhaust pipe at the bottom, a drain pipe is provided on one side of the bottom of the water receiving tray and the drain pipe is connected to the water receiving tray, and a hose is connected to the drain pipe.

[0009] In order to prevent rainwater from directly entering the exhaust pipe, preferably, the top of the exhaust pipe at the top is connected to the reducer through a connecting pipe, and the top of the reducer is connected to a rain cap through a supporting rod.

[0010] In order to provide lightning protection for the chimney, preferably, a lightning rod is connected to the top of the rain cap, and the connection point of the lightning rod is connected to a natural grounding pile on the ground through an insulated cable.

[0011] In order to effectively reduce the smoke exhaust wind noise, preferably, the noise reduction mechanism includes an inner reducer arranged in the reducer, a reducer row head is arranged at the lower end of the inner reducer, an inner wall of the reducer and an outer wall of the inner reducer are alternately provided with internal retaining rings in a vertical direction, and an upper part of the inner reducer is evenly provided with discharge ports in an annular direction;

[0012] A guide cover is arranged at the bottom of the rain cap, and the guide cover is an inverted cone cover structure.

[0013] Compared with the prior art, the beneficial effects of the utility model are: the rooftop chimney structure, the exhaust duct tower is effectively supported on the periphery of the exhaust duct, forming a strong supporting performance for the exhaust duct, so that the exhaust duct connection is more stable against strong wind weather, thereby protecting the exhaust duct; and the top of the exhaust duct tower also constitutes a standing platform; the setting of the inspection platform guardrail can provide all-round anti-fall protection for the inspectors, thereby increasing safety during the inspection of the inspection port opening plate and the inspection of the smoke and dust accumulation on the inner wall of the exhaust duct, and the whole process is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a main schematic diagram of the utility model;

[0016] Figure 3 for Figure 2 Schematic diagram of the left side;

[0017] Figure 4 It is a partial cutaway schematic diagram of the variable diameter section of the utility model.

[0018] In the figure: 1 exhaust duct, 2 inspection port, 3 exhaust duct tower, 4 mounting foot plate, 5 water tray, 6 ladder, 7 ladder guard frame, 8 inspection platform guard frame, 9 connecting pipe, 10 reducer, 11 support rod, 12 rain cap, 13 lightning rod, 14 inner reducer, 15 reducer row head, 16 inner retaining ring, 17 exhaust port, 18 guide cover. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the embodiment of the utility model provides a rooftop chimney structure, including four exhaust pipes 1 connected to the dust removal equipment on the top of the building, the exhaust pipes 1 are flange-connected, and a detection port 2 connected to the top exhaust pipe 1 is seamlessly welded on the left side. Under normal circumstances, the detection port 2 is flange-connected to a circular sealing plate, and the upper and lower sides of the exhaust pipe 1 are fixed with exhaust pipe towers 3 by bolts. The exhaust pipe tower 3 is formed by bolting the edges of a cubic frame to each other, and each frame edge is welded with cross-bracing steel. A mounting foot plate 4 is welded to the bottom of the exhaust pipe tower 3 and the mounting foot plate 4 is fixed to the top of the building with expansion bolts. This arrangement allows the exhaust pipe tower 3 to effectively support the periphery of the exhaust pipe 1, forming a strong supporting performance for the exhaust pipe 1, so that the connection of the exhaust pipe 1 is more stable against strong winds, thereby protecting the exhaust pipe 1; and the top of the exhaust pipe tower 3 also constitutes a standable platform. A ladder 6 is bolted to the rear left side of the exhaust duct tower 3, a ladder guard frame 7 is welded to the upper part of the ladder 6, and a detection platform guard frame 8 is bolted to the top of the exhaust duct tower 3 and close to the detection port 2. The detection platform guard frame 8 includes an outer guardrail and a pedal bolted to the top of the exhaust duct tower 3, and the inlet of the detection platform guard frame 8 corresponds to the inlet of the ladder guard frame 7;

[0021] Under such an arrangement, the inspector can climb up by climbing the ladder 6. When reaching a high place, the ladder guard frame 7 can provide lateral protection for the inspector. Then the inspector can enter the inspection platform guard frame 8. Due to the arrangement of the inspection platform guard frame 8, the inspector can be protected from falling all around, thereby increasing safety during the process of opening the sealing plate of the inspection port 2 and inspecting the amount of smoke and dust accumulated on the inner wall of the exhaust duct 1, and the whole process is easy to operate.

[0022] The top exhaust pipe 1 is connected to a noise reduction mechanism, which is used to reduce wind noise during the process of exhausting smoke on the exhaust pipe 1.

[0023] It is worth noting that since the lower dust removal system uses a centrifugal fan to exhaust air upward, the wind force is relatively large, especially at the top of the exhaust duct 1. The strong wind force and the existence of lateral wind in the air environment cause a certain amount of wind noise to be generated in the area of ​​the top exhaust duct 1. The purpose of setting up the noise reduction mechanism is to reduce this wind noise.

[0024] See also Figure 1 , Figure 2 and Figure 3 A water receiving pan 5 is welded to the outer periphery of the bottom of the exhaust pipe 1 at the bottom. The water receiving pan 5 surrounds the outer wall of the exhaust pipe 1 at the bottom and is an annular cover structure with an upper opening. A drain pipe is provided on one side of the bottom of the water receiving pan 5 and the drain pipe is connected to the water receiving pan 5. A hose is connected to the drain pipe.

[0025] Under such a setting, rainwater can be prevented from contacting the connection between the exhaust pipe 1 at the bottom and the exhaust pipe of the dust removal system, and the accumulated rainwater can be discharged to other areas.

[0026] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The top flange of the top exhaust pipe 1 is connected to the connecting pipe 9, the top flange of the connecting pipe 9 is connected to the lower end of the reducer 10, the top of the reducer 10 is welded with a support rod 11, and the top of the support rod 11 is bolted with a rain cap 12.

[0027] Under such an arrangement, the reducer 10 is responsible for the final exhaust section, and the rain cap 12 prevents rainwater from entering the exhaust pipe 1 .

[0028] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 A lightning rod 13 is fixed to the top of the rain cap 12 by bolts, and the connection point of the lightning rod 13 is connected to the natural grounding pile on the ground through an insulating cable.

[0029] In addition to the lightning rod 13, the exterior surface of the chimney on the roof is coated with insulating paint. When thunder strikes, the lightning rod 13 is set to guide the lightning to the upper part and then to the underground, thus playing a lightning protection effect on the chimney.

[0030] See also Figure 1 , Figure 2 , Figure 3 and Figure 4The noise reduction mechanism includes an inner reducer 14 integrally arranged in the reducer 10, a reducer row head 15 welded at the lower end of the inner reducer 14, and the reducer row head 15 can concentrate the smoke to the middle upper row. The inner wall of the reducer 10 and the outer wall of the inner reducer 14 are alternately welded with internal retaining rings 16 in the vertical direction. The upper part of the inner reducer 14 is evenly circumferentially provided with discharge ports 17, and the discharge ports 17 are arranged downwardly obliquely, and the angle with the upper inner wall of the inner reducer 14 is 30 degrees;

[0031] A guide cover 18 is provided at the bottom of the rain cap 12, and the guide cover 18 is an inverted cone cover structure.

[0032] After the smoke discharged from the exhaust pipe 1 enters the reducer 10, it is discharged in two directions. The first direction is to collect it through the reducer discharge head 15 and then discharge it upward. The second direction is to discharge it upward through the gap between the reducer 10 and the inner reducer 14. The internal retaining ring 16 is alternately arranged on the inner wall of the reducer 10 and the outer wall of the inner reducer 14, so that the wind force entering the area is mitigated and finally discharged obliquely downward from the annular discharge port 17, and intersects with the outer layer of the smoke discharged from the reducer discharge head 15. In this process, noise waves that cancel each other out are generated at the top of the inner reducer 14, reducing the amount of noise transmitted outward.

[0033] When the upper exhaust smoke is blocked by the guide cover 18, the smoke can be evenly dispersed laterally to better intersect with the lateral wind, thereby reducing the sonic vibration generated at the upper end of the reducer 10 due to different wind directions.

[0034] The working principle of this embodiment is as follows: the exhaust duct tower 3 is effectively supported on the periphery of the exhaust duct 1, forming a strong supporting performance for the exhaust duct 1, so that the connection of the exhaust duct 1 is more stable against strong wind weather, thereby protecting the exhaust duct 1; and the top of the exhaust duct tower 3 also constitutes a standing platform; the setting of the detection platform guard frame 8 can provide all-round anti-fall protection for the inspectors, thereby increasing safety during the opening of the detection port 2 and the inspection of the smoke and dust accumulation on the inner wall of the exhaust duct 1, and the whole process is easy to operate.

[0035] In addition, with the setting of the noise reduction mechanism, the external exhaust noise of the chimney on the roof can be reduced, which is highly environmentally friendly.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A roof chimney structure, comprising a plurality of exhaust pipes (1) connected to a dust removal device on the top of a building, characterized in that: A detection port (2) connected to the exhaust duct (1) is arranged on one side of the exhaust duct (1) at the top, an exhaust duct tower (3) is arranged on the exhaust duct (1), a mounting foot plate (4) is arranged at the bottom of the exhaust duct tower (3), and the mounting foot plate (4) is fixedly arranged on the top of the building, a ladder (6) is connected to one side of the exhaust duct tower (3), a ladder guard frame (7) is arranged on the upper part of the ladder (6), and a detection platform guard frame (8) is arranged at the top of the exhaust duct tower (3) and close to the detection port (2), and the inlet of the detection platform guard frame (8) corresponds to the inlet of the ladder guard frame (7); The exhaust pipe (1) at the top is connected to a noise reduction mechanism, and the noise reduction mechanism is used to reduce wind noise during the process of exhausting smoke on the exhaust pipe (1).

2. A rooftop chimney structure according to claim 1, characterized in that: A water receiving tray (5) is arranged at the bottom of the exhaust pipe (1) at the bottom, a drainage pipe is arranged on one side of the bottom of the water receiving tray (5) and the drainage pipe is connected to the water receiving tray (5), and a hose is connected to the drainage pipe.

3. The rooftop chimney structure according to claim 1, characterized in that: The top end of the exhaust pipe (1) at the top is connected to a reducer (10) via a connecting pipe (9), and the top of the reducer (10) is connected to a rain cap (12) via a supporting rod (11).

4. A rooftop chimney structure according to claim 3, characterized in that: The top of the rain cap (12) is connected to a lightning rod (13), and the connection point of the lightning rod (13) is connected to a natural grounding pile on the ground through an insulating cable.

5. The rooftop chimney structure according to claim 3, characterized in that: The noise reduction mechanism comprises an inner reducer (14) arranged in the reducer (10), a reducer row head (15) is arranged at the lower end of the inner reducer (14), inner retaining rings (16) are arranged alternately in the vertical direction on the inner wall of the reducer (10) and the outer wall of the inner reducer (14), and the upper part of the inner reducer (14) is evenly provided with row ports (17) in the circumferential direction; A guide cover (18) is arranged at the bottom of the rain cap (12), and the guide cover (18) is an inverted cone cover structure.

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