Chimney internally provided with double D-shaped inner cylinders

Abstract

The utility model discloses a chimney with built-in double D-shaped inner barrels, which comprises an outer barrel and two D-shaped inner barrels, the two D-shaped inner barrels are arranged back to back, a movable gap is arranged between the two D-shaped inner barrels, the periphery of each inner barrel is provided with a plurality of damping mechanisms for protecting the barrel wall of the inner barrel, and the damping mechanisms are arranged at intervals from top to bottom along the axial direction of the inner barrel; each vibration reduction mechanism comprises a circle of annular T-shaped vibration reduction beam and an annular reinforcing plate which are arranged along the periphery of the inner cylinder, the annular reinforcing plates are welded on the outer wall of the inner cylinder, the annular T-shaped vibration reduction beams are connected with the annular reinforcing plates through bolts, and ceramic fiber pads I used for achieving all-directional vibration prevention between the inner cylinders are arranged between the annular T-shaped vibration reduction beams and the annular reinforcing plates. According to the utility model, the annular reinforcing plate, the annular T-shaped damping beam and the ceramic fiber pad I are arranged, so that if collision occurs between the inner cylinder and the outer cylinder, the structure effectively plays a role in damping, and the cylinder wall of the inner cylinder is protected.

Description

Technical Field

[0001] The utility model relates to a chimney structure, in particular to a chimney with a built-in double D-shaped inner tube. Background Art

[0002] As the scale of projects such as chemical or thermal power production develops towards large-scale development, chimneys, as an indispensable part of the emission system, are also getting larger and larger, which is mainly reflected in two aspects. First, the diameter of a single chimney becomes larger, and second, a common method for such projects is to place two or three exhaust inner cylinders in a large structural outer cylinder. The traditional steel inner cylinder is generally circular. When two steel inner cylinders are arranged, the size of the outer cylinder is significantly increased, which not only increases the wind load, but also has more redundant space inside, which easily causes a significant increase in the cost of the structural outer cylinder and its entire foundation.

[0003] In order to solve the above problems, a chimney structure with a double D-shaped inner tube is disclosed in the prior art. The cross-sectional area of ​​the chimney with this structure is reduced by nearly half, and the cost and construction period are saved significantly. However, since the high-rise structure will inevitably be affected by wind loads and vibrate, contact or collision between the inner tube and the outer tube and between the inner tubes may occur. Therefore, it is crucial to effectively enhance the stability of the D-shaped inner tube and avoid the impact of reasonable contact or collision on the structure. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a chimney with built-in double D-shaped inner tubes, which has a reasonable design and can effectively enhance the stability of the D-shaped inner tube, in view of the deficiencies in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A chimney with a built-in double D-shaped inner cylinder, characterized in that it comprises an outer cylinder and two D-shaped inner cylinders, the two D-shaped inner cylinders are arranged back to back, a movable gap is provided between the two D-shaped inner cylinders, a plurality of vibration reduction mechanisms for protecting the inner cylinder wall are installed on the outer periphery of each inner cylinder, and the vibration reduction mechanisms are arranged at intervals from top to bottom along the axial direction of the inner cylinder;

[0007] Each vibration reduction mechanism includes an annular T-shaped vibration reduction beam and an annular reinforcement plate arranged along the outer circumference of the inner cylinder. The annular reinforcement plate is welded to the outer wall of the inner cylinder. The annular T-shaped vibration reduction beam is connected to the annular reinforcement plate by bolts. A ceramic fiber pad I is provided between the annular T-shaped vibration reduction beam and the annular reinforcement plate to achieve all-round vibration protection between the inner cylinders, which can effectively prevent heat transfer and avoid the generation of thermal bridges.

[0008] The technical problem to be solved by the utility model can also be achieved through the following technical solution: an outer cylinder guide plate matching the outer cylinder wall is provided on the surface of the annular T-shaped vibration-damping beam facing the outer cylinder, and the outer cylinder guide plate is arranged in an arc shape from top to bottom.

[0009] The technical problem to be solved by the utility model can also be achieved through the following technical scheme: two vertical T-beams are added to the back of the inner tube, the vertical T-beams are symmetrically arranged on both sides of the center of the outer tube, the vertical T-beams are connected to the inner tube through the inner tube connecting plate, a ceramic fiber pad II is arranged between the vertical T-beam and the inner tube connecting plate, and the cross-section of the vertical T-beam is T-shaped.

[0010] The technical problem to be solved by the utility model can also be achieved through the following technical solution: guide positioning blocks are provided on both sides of the back of the inner cylinder to facilitate positioning when connecting and installing the inner cylinders.

[0011] The technical problem to be solved by the utility model can also be achieved through the following technical solution: a flange for easy assembly is provided on the outer cylinder, and a flange reinforcement plate is fixed around the flange.

[0012] Compared with the prior art, the utility model has the following technical effects:

[0013] First, the utility model provides a full circle of annular reinforcement plates at a certain interval on the outside of the D-shaped inner cylinder, and also provides a circle of annular T-shaped vibration-damping beams, which are connected to the annular reinforcement plates by bolts, and a gap is left between the annular T-shaped vibration-damping beam and the cylinder wall, and a ceramic fiber pad I is provided between the annular T-shaped vibration-damping beam and the annular reinforcement plate. In this way, if a collision occurs between the inner cylinder and the outer cylinder, the structure effectively plays a role in vibration reduction, thereby protecting the cylinder wall of the inner cylinder;

[0014] Second, two vertical T-beams were added to the outside of the annular T-shaped vibration-damping beam of one of the inner tubes. Ceramic fiber pads II were also used to connect the connecting plates welded on the inner tube, thus forming all-round vibration protection between the side inner tubes. In the part where the annular T-beam contacts the outer tube wall, outer tube guide plates were added to the outside of the T-beam at certain intervals as needed, which played a guiding and anti-collision function when the inner tube was installed. At the same time, in order to facilitate the positioning when connecting and installing the inner tubes, a certain number of steel inner tube connection guide positioning blocks were added to the inner side of one end of the inner tube;

[0015] The chimney with built-in double D-shaped inner cylinder of the utility model effectively enhances the stability of the D-shaped inner cylinder and also effectively avoids the influence of reasonable contact or collision on the structure. The structure is crucial to the installation stability of the inner cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of a chimney with a built-in double D-shaped inner tube according to the utility model;

[0017] Figure 2 for Figure 1 A top view of

[0018] Figure 3 for Figure 1 A magnified view of the structure at B in FIG.

[0019] Figure 4 for Figure 1 A magnified view of the structure at position C in FIG.

[0020] Figure 5 for Figure 1 A magnified view of the structure at position D in FIG.

[0021] Figure 6 for Figure 1 A magnified view of the structure at position E in FIG.

[0022] Figure 7 for Figure 1 A magnified view of the structure at F in FIG.

[0023] Figure 8 for Figure 2 A magnified view of the structure at G in FIG.

[0024] Fig. 9 for Figure 2 Enlarged view of the structure at H in .

[0025] In the figure: 1-outer cylinder; 2-outer cylinder flange; 3-outer cylinder flange hole; 4-left D-type inner cylinder; 5-right D-type inner cylinder; 6-D-type inner cylinder wall; 7-vertical T-beam; 8-inner cylinder connecting plate; 9-guide positioning block; 10-annular reinforcement plate; 11-ceramic fiber pad; 12-bolt; 13-annular T-shaped vibration-damping beam; 14-outer cylinder guide plate; 15-flange reinforcement plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0028] Reference Figure 1-9A chimney with a built-in double D-shaped inner cylinder comprises an outer cylinder 1 and two D-shaped inner cylinders 4 and 5. The two D-shaped inner cylinders 4 and 5 are arranged back to back, and a movable gap is provided between the two D-shaped inner cylinders 4 and 5. A plurality of vibration reduction mechanisms for protecting the inner cylinder wall are installed on the outer periphery of each inner cylinder, and the vibration reduction mechanisms are arranged at intervals from top to bottom along the axial direction of the inner cylinder. The chimney described in the utility model designs the inner cylinder into two steel inner cylinders with the same D-shaped cross-section according to the required cross-sectional area of ​​the smoke exhaust pipe, and generally adopts a back-to-back arrangement.

[0029] Each vibration damping mechanism includes an annular T-shaped vibration damping beam 13 and an annular reinforcement plate 10 arranged along the outer circumference of the inner cylinder. The annular reinforcement plate 10 is welded to the outer wall of the inner cylinder. The annular T-shaped vibration damping beam 13 is connected to the annular reinforcement plate 10 by bolts 12. A ceramic fiber pad Ⅰ11 is provided between the annular T-shaped vibration damping beam 13 and the annular reinforcement plate 10 for achieving all-round vibration isolation between the inner cylinders.

[0030] An outer cylinder guide plate 14 that matches with the outer cylinder wall is provided on the annular T-shaped vibration-damping beam 13 directly facing the outer cylinder 1. The outer cylinder guide plate 14 is arranged in an arc shape from top to bottom.

[0031] Two vertical T-beams 7 are added to the back of the inner tube. The vertical T-beams 7 are symmetrically arranged on both sides of the center of the outer tube. The vertical T-beams 7 are connected to the inner tube through the inner tube connecting plate 8. A ceramic fiber pad II is arranged between the vertical T-beams 7 and the inner tube connecting plate 8.

[0032] Guide positioning blocks 9 are provided on both sides of the back of the inner cylinder to facilitate positioning when connecting and installing the inner cylinders.

[0033] The outer cylinder is provided with a flange 2 for easy assembly, the flange 2 is provided with a flange hole 3, and a flange reinforcement plate 15 is fixed around the flange 2.

[0034] The chimney described in the utility model adjusts the original conventional circular inner cylinder into a double D-shaped steel inner cylinder. Under the premise of ensuring that the cross-sectional area of ​​the smoke exhaust chimney meets the design requirements, it is obvious that this structure can greatly reduce the structural load and foundation load, and the cross-sectional area of ​​the outer cylinder (concrete outer cylinder or steel outer cylinder) is reduced by nearly half, which saves considerable cost and construction period.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A chimney with a built-in double D-shaped inner tube, characterized in that: It comprises an outer cylinder and two D-shaped inner cylinders, the two D-shaped inner cylinders are arranged back to back, a movable gap is provided between the two D-shaped inner cylinders, and a plurality of vibration reduction mechanisms for protecting the inner cylinder wall are installed on the outer periphery of each inner cylinder, and the vibration reduction mechanisms are arranged at intervals from top to bottom along the axial direction of the inner cylinder; Each vibration damping mechanism includes an annular T-shaped vibration damping beam and an annular reinforcement plate arranged along the outer circumference of the inner cylinder. The annular reinforcement plate is welded to the outer wall of the inner cylinder. The annular T-shaped vibration damping beam is connected to the annular reinforcement plate by bolts. A ceramic fiber pad I is provided between the annular T-shaped vibration damping beam and the annular reinforcement plate to achieve all-round vibration protection between the inner cylinders.

2. A chimney with a built-in double D-shaped inner tube according to claim 1, characterized in that: An outer cylinder guide plate matched with the outer cylinder wall is arranged on the surface of the annular T-shaped vibration-damping beam facing the outer cylinder, and the outer cylinder guide plate is arranged in an arc shape from top to bottom.

3. The chimney with built-in double D-shaped inner tube according to claim 1, characterized in that: Two vertical T-beams are added on the back of the inner tube. The vertical T-beams are symmetrically arranged on both sides of the center of the outer tube. The vertical T-beams are connected to the inner tube through the inner tube connecting plate. A ceramic fiber pad II is arranged between the vertical T-beams and the inner tube connecting plate.

4. The chimney with built-in double D-shaped inner tube according to claim 1, characterized in that: Guide positioning blocks are arranged on both sides of the back of the inner cylinder for facilitating positioning when the inner cylinder is connected and installed.

5. The chimney with built-in double D-shaped inner tube according to claim 1, characterized in that: A flange is provided on the outer cylinder for easy assembly, and a flange reinforcement plate is fixed around the flange.

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