Double-layer socket type chimney

Abstract

A double-layer socket type chimney comprises a plurality of chimney sections, the chimney sections are sequentially connected up and down to form a chimney body, the bottom of the lowest chimney section is fixedly connected with a foundation bolt pre-buried in a base through a foundation flange, in addition, an air inlet hole, an ash removal hole and a water drainage hole are further formed in the lowest chimney section, and each chimney section comprises an inner barrel and an outer barrel. The inner barrels of the upper and lower chimney sections are hermetically connected in a socket manner, the outer barrels of the upper and lower chimney sections are fixedly connected through connecting flanges, and the inner barrel and the outer barrel of each chimney section are fixedly connected through a connecting assembly. According to the novel chimney, through socket type sealing connection of the inner barrels of the chimney sections, the sealing performance of the chimney and the convenience of connection and installation are greatly improved, and the situation that smoke leaks from the inner barrels to cause corrosion of the outer barrels is avoided; the smoke is prevented from being pre-cooled and liquefied into acid liquor at the top to corrode the inner wall and the outer wall of the outer cylinder, and the service life and the safety of the chimney are improved.

Description

Technical Field

[0001] This utility model belongs to the field of chimney equipment, and in particular relates to a double-layer socket-type chimney. Background Technology

[0002] Industrial chimneys, due to their overall height, need to be manufactured and installed in multiple sections. These sections are typically connected by flanges. For double-layer chimneys, the inner layer is a corrosion-resistant layer that comes into direct contact with the flue gas, while the outer layer is a protective layer that comes into direct contact with the air. Flue gas generally contains moisture, and the existing inner layer is connected by butt flanges, which can lead to poor sealing, resulting in smoke and water leakage. In particular, highly corrosive flue gas can corrode the outer layer, seriously affecting the service life and safety of the chimney. Furthermore, flange connections also present problems such as flange misalignment during assembly, difficulty in docking, low installation efficiency, and long installation cycles. Utility Model Content

[0003] The purpose of this utility model is to provide a double-layer socket-type chimney to solve the technical problem of how to improve the sealing performance and ease of installation of the inner cylinder and avoid the corrosion of the outer cylinder by flue gas.

[0004] To achieve the above objectives, the specific technical solution of this utility model for a double-layer socket-type chimney is as follows:

[0005] A double-layer socket-type chimney includes several chimney sections, which are connected sequentially to form the main body of the chimney. The bottom of the lowest chimney section is fixedly connected to the base by anchor bolts pre-embedded in the base through a foundation flange. In addition, the lowest chimney section is provided with an air inlet, a ash removal hole, and a drainage hole. Each chimney section includes an inner cylinder and an outer cylinder. The inner cylinders of the upper and lower chimney sections are sealed together by a socket-type connection, and the outer cylinders of the upper and lower chimney sections are fixedly connected by a connecting flange. At the same time, the inner cylinders and outer cylinders of each chimney section are fixedly connected by a connecting assembly.

[0006] Furthermore, the inner cylinder of the chimney section has a spigot section and a socket section at its two ends, respectively. The lower end of the inner cylinder is the spigot section and the upper end is the socket section. The inner diameter of the socket section is larger than the inner diameter of the spigot section and corresponds to the outer diameter of the spigot section. A sealing groove is provided on the outer side of the spigot section of the inner cylinder, and a sealing ring is provided in the sealing groove. Both the upper and lower ends of the outer cylinder of the chimney section are provided with connecting flanges. At the same time, a lifting lug is provided at the upper end of the outer cylinder, and a flange stiffener is fixedly connected to the side of the connecting flange.

[0007] Furthermore, the connecting assembly includes reinforcing supports and a support ring plate. Specifically, several reinforcing supports are uniformly fixedly connected to the outer side of the inner cylinder, and a support ring plate is fixedly connected to the inner side of the outer cylinder. The reinforcing supports can be placed on the support ring plate and fixedly connected to the support ring plate.

[0008] Furthermore, a protective plate is installed at the top of the uppermost chimney section. This protective plate is circular and seals the gap between the inner and outer cylinders at the top. A liquid guiding ring plate is also installed on the outer side of the outer cylinder at the top, with the side edge of the liquid guiding ring plate away from the outer side of the outer cylinder. A corrosion-resistant fiberglass protective layer is applied to the outer sides of the protective plate and the liquid guiding ring plate.

[0009] Furthermore, a grid frame is fixedly connected inside the outer cylinder of the bottom chimney section, and a fixed flange is installed on the grid frame. The fixed flange is concentrically arranged with the outer cylinder. The bottom of the corresponding inner cylinder in the chimney section is fixedly connected to the grid frame through the fixed flange. A water collection plate is also installed inside the inner cylinder of the bottom chimney section. The water collection plate is fixedly connected to the inner cylinder and is inclined. The lowest position of the water collection plate corresponds to the opening of the drainage hole.

[0010] The double-layer socket-type chimney of this utility model has the following advantages: the socket-type sealing connection of the inner cylinder of each chimney section greatly improves the sealing performance and ease of connection and installation, and avoids the leakage of flue gas from the inner cylinder causing corrosion of the outer cylinder. In addition, the protective plate and liquid guiding ring plate installed at the top of the chimney prevent the flue gas from pre-cooling and liquefying into acid at the top, which would cause corrosion to the inner and outer walls of the outer cylinder. Furthermore, the weight of the inner cylinder of each chimney section 1 is evenly distributed on the outer cylinder through the connecting assembly, which reduces the pressure on the bottom inner cylinder and improves the stability of the inner cylinder. The chimney of this application improves service life and safety. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the double-layer socket-type chimney of this utility model;

[0012] Figure 2 For the present utility model Figure 1 Enlarged view of point A;

[0013] Figure 3 For the present utility model Figure 1 BB-direction cross-section diagram;

[0014] Figure 4 This is a partial sectional view of the chimney section connection of this utility model;

[0015] Figure 5 This is a schematic diagram of the chimney top structure of this utility model;

[0016] The markings in the diagram are as follows: 1. Chimney section; 11. Inner cylinder; 111. Spiral section; 112. Socket section; 12. Outer cylinder; 121. Connecting flange; 122. Lifting lug; 123. Flange stiffener; 2. Base; 21. Foundation flange; 22. Anchor bolt; 3. Air inlet; 4. Ash removal hole; 5. Drainage hole; 6. Well frame; 7. Fixed flange; 8. Connecting assembly; 81. Reinforcing support; 82. Support ring plate; 9. Protective assembly; 91. Protective plate; 92. Liquid guiding ring plate; 93. Fiberglass protective layer. Detailed Implementation

[0017] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of a double-layer socket-type chimney.

[0018] like Figure 1-5 As shown, the double-layer socket-type chimney of this utility model includes several chimney sections 1, which are connected sequentially to form the main body of the chimney. The bottom of the lowest chimney section 1 is fixedly connected to the base 2 by anchor bolts 22 pre-embedded in the base 2 through a foundation flange 21. In addition, the lowest chimney section 1 is also provided with an air inlet 3, a ash removal hole 4, and a drainage hole 5, which are used for the entry of flue gas, daily ash removal, and drainage operations, respectively. The chimney section 1 includes an inner cylinder 11 and an outer cylinder 12, and the inner cylinder 11 of the upper and lower chimney sections 1 is connected by... The outer cylinder 12 of the upper and lower chimney sections 1 is fixedly connected by connecting flange 121. At the same time, the inner cylinder 11 and outer cylinder 12 of each chimney section 1 are fixedly connected by connecting assembly 8. The outer cylinder 12 provides fixed support for the inner cylinder 11. In this double-layer socket-type chimney, the inner cylinder 11 is sealed by socket-type connection, which has a good sealing effect and prevents flue gas and water vapor from leaking from the inner cylinder 11, causing corrosion to the outer cylinder 12 and affecting the service life of the chimney. At the same time, the connection and installation are convenient.

[0019] Specific examples Figure 2-3 As shown, a grid frame 6 is fixedly connected inside the outer cylinder 12 of the bottom chimney section 1. A fixing flange 7 is installed on the grid frame 6, and the fixing flange 7 is concentrically arranged with the outer cylinder 12. The bottom of the corresponding inner cylinder 11 inside the chimney section 1 is fixedly connected to the grid frame 6 through the fixing flange 7. The grid frame 6 provides support and fixation for the inner cylinder 11, and the fixed connection between the inner cylinder 11 and the fixing flange 7 also ensures the concentricity of the inner cylinder 11 and the outer cylinder 12. A water collection plate is also installed inside the inner cylinder 11 of the bottom chimney section 1. The water collection plate is fixedly connected to the inner cylinder 11 and is inclined. The lowest position of the water collection plate corresponds to the opening of the drain hole 5, through which the liquid accumulated on the water collection plate can be drained.

[0020] Specific examples Figure 4As shown, the inner cylinder 11 of the chimney section 1 has a spigot section 111 and a socket section 112 at its two ends, respectively. The lower end of the inner cylinder 11 is the spigot section 111, and the upper end is the socket section 112. The inner diameter of the socket section 112 is larger than the inner diameter of the spigot section 111 and corresponds to the outer diameter of the spigot section 111. A sealing groove is provided on the outside of the spigot section 111 of the inner cylinder 11, and a sealing ring is provided in the sealing groove. The number of sealing grooves and sealing rings can be set according to actual needs, and no further limitation is made here. When connecting the inner cylinders 11, the spigot section 111 of the upper section of the inner cylinder 11 is inserted into the lower section of the inner cylinder 11. The socket section 112 enables a socket-type sealing connection between the upper and lower inner cylinders 11. The sealing strip can be made of a material with good corrosion resistance, and no material restrictions are imposed here. Both the upper and lower ends of the outer cylinder 12 of the chimney section 1 are provided with connecting flanges 121. At the same time, a lifting lug 122 is also provided at the upper end of the outer cylinder 12 for hoisting the outer cylinder 12. During connection, the upper and lower outer cylinders 12 are aligned and then fixedly connected through the corresponding connecting flanges 121. In addition, in order to strengthen the strength of the connecting flanges 121, flange stiffeners 123 are fixedly connected to the side of the connecting flanges 121.

[0021] Furthermore, to enhance the stability of the inner cylinder 11, a connecting assembly 8 is provided between the inner cylinder 11 and the outer cylinder 12 of the corresponding chimney section 1. This connecting assembly 8 is used to fix the inner cylinder 11 and the outer cylinder 12, improving the stability of the inner cylinder 11 and completing the fixation of the inner cylinder 11, so that the weight of the inner cylinder 11 is evenly distributed on the outer cylinder 12. The connecting assembly 8 includes a reinforcing support 81 and a support ring plate 82, specifically as follows: Figure 4 As shown, several reinforcing supports 81 are uniformly fixedly connected to the outer side of the inner cylinder 11, and a corresponding support ring plate 82 is fixedly connected to the inner side of the outer cylinder 12. The reinforcing supports 81 can be placed on the support ring plate 82 and fixedly connected to the support ring plate 82. The support ring plate 82 supports and fixes the inner cylinder 11, thereby distributing the weight of the inner cylinder 11 evenly on the outer cylinder 12 through the connecting assembly 8, reducing the pressure on the bottom inner cylinder 11.

[0022] In addition, to prevent acid condensation from forming when the flue gas encounters cold air at the top of the chimney, thus corroding the outer casing 12, and to prevent acid from sliding down from the top of the outer casing 12 and corroding it, as follows: Figure 5As shown, the chimney top is reinforced with protective components 9 to enhance the protection of the outer cylinder 12. Specifically, a protective plate 91 is installed at the top of the uppermost chimney section 1. This protective plate 91 is annular and is used to seal the gap between the inner cylinder 11 and the outer cylinder 12 at the top, preventing acid from contacting the inner side of the outer cylinder 12. In addition, a liquid guiding ring plate 92 is installed on the outer side of the outer cylinder 12 at the top. The side edge of the liquid guiding ring plate 92 is away from the outer side of the outer cylinder 12. The liquid guiding ring plate 92 can directly drip the acid accumulated at the top of the chimney along the edge of the liquid guiding ring plate 92, preventing the acid from sliding down the outer side of the outer cylinder 12 and causing corrosion of the outer cylinder 12. The liquid guiding ring plate 92 can be installed horizontally or inclined downwards, without much limitation. To further protect the protective plate 91 and the liquid guiding ring plate 92, a corrosion-resistant fiberglass protective layer 93 is covered on the outer side of the protective plate 91 and the liquid guiding ring plate 92.

[0023] To further prevent or reduce the resonance of the chimney caused by vortices generated by airflow, a wind-breaking ring is fixedly connected above the chimney.

[0024] The double-layer socket-type chimney of this application, through the socket-type sealing connection of the inner cylinder 11 of each chimney section 1, greatly improves the chimney's sealing performance and ease of installation, preventing flue gas leakage from the inner cylinder 11 and causing corrosion of the outer cylinder 12. Furthermore, the protective plate 91 and liquid guiding ring plate 92 installed at the top of the chimney prevent the flue gas from pre-cooling and liquefying into acid at the top, thus avoiding corrosion of the inner and outer walls of the outer cylinder 12. In addition, the weight of the inner cylinder 11 of each chimney section 1 is evenly distributed on the outer cylinder 12 through connecting assemblies, reducing the pressure on the bottom inner cylinder 11 and improving its stability. The chimney of this application has improved service life and safety, and is convenient to install, with a short installation period and high efficiency.

[0025] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A double-layer socket-type chimney, characterized in that, It includes several chimney sections (1), each chimney section (1) is connected to the bottom of the chimney body in sequence. The bottom of the bottom chimney section (1) is fixedly connected to the anchor bolts (22) pre-embedded in the base (2) through the foundation flange (21). In addition, the bottom chimney section (1) is also provided with an air inlet (3), a ash removal hole (4) and a drainage hole (5). The chimney section (1) includes an inner cylinder (11) and an outer cylinder (12). The inner cylinders (11) of the upper and lower chimney sections (1) are sealed and connected by a socket method. The outer cylinders (12) of the upper and lower chimney sections (1) are fixedly connected by a connecting flange (121). At the same time, the inner cylinders (11) and outer cylinders (12) of each chimney section (1) are fixedly connected by a connecting assembly (8).

2. The double-layer socket-type chimney according to claim 1, characterized in that, The inner cylinder (11) of the chimney section (1) has a spigot section (111) and a socket section (112) at its two ends respectively. The lower end of the inner cylinder (11) is the spigot section (111) and the upper end is the socket section (112). The inner diameter of the socket section (112) is larger than the inner diameter of the spigot section (111) and corresponds to the outer diameter of the spigot section (111). A sealing groove is provided on the outside of the spigot section (111) of the inner cylinder (11), and a sealing ring is provided in the sealing groove.

3. A double-layer socket-type chimney according to claim 2, characterized in that, The outer cylinder (12) of the chimney section (1) is provided with connecting flanges (121) at both the upper and lower ends. At the same time, a lifting lug (122) is provided at the upper end of the outer cylinder (12). A flange stiffener (123) is fixedly connected to the side of the connecting flange (121).

4. A double-layer socket-type chimney according to claim 3, characterized in that, The connecting assembly (8) includes a reinforcing support (81) and a supporting ring plate (82). Specifically, a number of reinforcing supports (81) are uniformly fixedly connected to the outer side of the inner cylinder (11), and a supporting ring plate (82) is fixedly connected to the inner side of the outer cylinder (12). The reinforcing support (81) can be placed on the supporting ring plate (82) and fixedly connected to the supporting ring plate (82).

5. A double-layer socket-type chimney according to claim 4, characterized in that, The top of the uppermost chimney section (1) is provided with a protective plate (91), which is circular and seals the gap between the inner cylinder (11) and the outer cylinder (12) at the top. A liquid guiding ring plate (92) is also provided on the outside of the outer cylinder (12) at the top. The side edge of the liquid guiding ring plate (92) is away from the outside of the outer cylinder (12). A corrosion-resistant fiberglass protective layer (93) is covered on the outside of the protective plate (91) and the liquid guiding ring plate (92).

6. A double-layer socket-type chimney according to claim 5, characterized in that, The bottom chimney section (1) has a fixed frame (6) inside the outer cylinder (12). The frame (6) has a fixed flange (7) and the outer cylinder (12) are concentrically connected. The bottom of the corresponding inner cylinder (11) inside the chimney section (1) is fixedly connected to the frame (6) through the fixed flange (7). A water collection plate is also provided inside the inner cylinder (11) of the bottom chimney section (1). The water collection plate is fixedly connected to the inner cylinder (11) and is inclined. The lowest position of the water collection plate corresponds to the opening of the drain hole (5).

7. A double-layer socket-type chimney according to claim 6, characterized in that, A windbreak ring is fixedly connected to the top of the chimney.

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