Chimney inner cylinder flange socket structure
By using the inner cylinder flange socket structure and sealing layer in the chimney, the problem of traditional welding technology requiring high experience is solved, the coaxiality and sealing performance between pipe sections are achieved, the installation process is simplified and the cost is reduced. .
Patent Information
- Application Number
- CN202420053348.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-10
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-01-10
AI Technical Summary
The welding process of traditional chimneys requires high experience, increases labor costs and may cause welding deformation.
The chimney inner barrel flange socket structure is used, and the slot and flange connection between the upper and lower pipe sections are used, combined with the sealing layer and filling ring, to form a "Z" sealing structure to avoid welding.
The same axis and sealing performance between the chimney tube festival is achieved, the installation process is simplified, the welding deformation is avoided, and the labor cost is reduced.
Smart Images
Figure CN222392227U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chimney installation, in particular to a chimney inner tube flange socket structure. Background Art
[0002] A chimney is a structure that provides ventilation for hot flue gases or smoke from boilers, fireplaces, blast furnaces, etc. Chimneys are usually vertical to ensure smooth flow of gas. Small and medium-sized chimneys are usually made of metal plates bent into a cylindrical shape, and the connecting seams at both ends of the plates are welded to form a pipe section.
[0003] Traditional chimneys are connected by multiple pipe sections, and adjacent pipe sections are connected and fixed by welding. However, during the welding process, the ends of the pipe sections need to be polished first, and the coaxiality and weld quality between the two pipe sections must be ensured based on experience during welding. This places high demands on the experience of welders and increases labor costs. Utility Model Content
[0004] In view of the above problems, the utility model provides a chimney inner tube flange socket structure.
[0005] In order to achieve the above-mentioned invention object, the technical solution adopted by the utility model is as follows:
[0006] A chimney inner tube flange socket structure is provided, comprising an upper pipe section and a lower pipe section, wherein an external coaxial fixing sleeve at the top end of the lower pipe section is provided with a first connecting flange, the top wall of the first connecting flange is higher than the top end face of the lower pipe section, the inner wall of the first connecting flange and the top wall of the lower pipe section form a slot for inserting the bottom end of the upper pipe section, the external coaxial fixing sleeve at the bottom end of the upper pipe section is provided with a second connecting flange, the bottom wall of the second connecting flange is higher than the bottom end face of the upper pipe section, the bottom end of the upper pipe section is inserted into the inner ring of the first connecting flange, a sealing layer is provided between the first connecting flange and the second connecting flange, and the first connecting flange and the second connecting flange are connected and fixed by flange bolts.
[0007] Furthermore, the sealing layer is a high-temperature sealant.
[0008] Furthermore, an inclined chamfered surface is provided on the outer edge of the bottom end of the upper pipe section, and a first sealing filling ring is filled and provided between the chamfered surface, the inner wall of the first connecting flange and the top end face of the lower pipe section.
[0009] Furthermore, a second sealing filling ring is provided between the first connecting flange and the second connecting flange and located on the inner side of the sealing layer.
[0010] Furthermore, the first sealing filling ring and the second sealing filling ring are both asbestos ropes in a closed loop, and the asbestos ropes are impregnated with high-temperature sealant.
[0011] Furthermore, two support rings are coaxially spaced apart on the top wall of the first connecting flange and located on the inner side of the sealing layer, a pressure ring is coaxially protrudingly provided on the bottom wall of the second connecting flange, the second sealing filling ring is located between the two support rings, the pressure ring is aligned with the gap between the two support rings, and the width of the pressure ring is smaller than the width of the gap between the two support rings.
[0012] Furthermore, an anti-corrosion coating is provided on the inner walls of the upper pipe section and the lower pipe section.
[0013] The beneficial effects of the utility model are as follows: by installing the various pipe sections constituting the chimney with a socket structure, when the socket is used, the bottom end of the upper pipe section is staggered with the top wall of the second connecting flange on the lower pipe section, so that the joint positions between the upper pipe section, the lower pipe section and the first connecting flange and the second connecting flange form a "Z"-shaped sealing structure, and the first sealing filling ring, the second sealing filling ring and the sealing layer are used to further improve the sealing performance of the released position, without the need to weld between the pipe sections, ensuring the coaxiality between the upper pipe section and the lower pipe section, and also ensuring the sealing performance between the two, the chimney pipe sections are easy to install, and welding deformation between the pipe sections is avoided. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a structural schematic diagram of the chimney inner tube flange socket structure of Example 1 of the present application.
[0015] Figure 2 This is a structural schematic diagram of the chimney inner tube flange socket structure of Example 2 of the present application.
[0016] Among them, 1. upper pipe section; 11. first connecting flange; 111. support ring; 12. chamfered surface; 2. lower pipe section; 21. second connecting flange; 211. pressure ring; 3. sealing layer; 4. flange bolts; 5. first sealing filling ring; 6. second sealing filling ring; 7. anti-corrosion coating. DETAILED DESCRIPTION
[0017] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0018] Example 1
[0019] The present application discloses a chimney inner tube flange socket structure, referring to Figure 1, including an upper pipe section 1 and a lower pipe section 2, the top external coaxial fixing sleeve of the lower pipe section 2 is provided with a first connecting flange 11, and the bottom external coaxial fixing sleeve of the upper pipe section 1 is provided with a second connecting flange 21. The first connecting flange 11 and the second connecting flange 21 are connected and fixed by flange bolts 4. Specifically, through holes are provided at corresponding positions of the first connecting flange 11 and the second connecting flange 21, and the flange connecting bolts pass through the through holes on the first connecting flange 11 and the second connecting flange 21 and are threadedly connected with at least two nuts. In the embodiment of the present application, the lower pipe section 2 and the upper pipe section 1 are both made of acid-resistant carbon steel, and the first connecting flange 11 and the second connecting flange 21 are respectively fixedly connected to the lower pipe section 2 and the upper pipe section 1 by welding.
[0020] The top wall of the first connection flange 11 is higher than the top end face of the lower pipe section 2, so that the inner wall of the first connection flange 11 and the top wall of the lower pipe section 2 form a slot for the bottom end of the upper pipe section 1 to be inserted, and the bottom wall of the second connection flange 21 is higher than the bottom end face of the upper pipe section 1. When the first connection flange 11 and the second connection flange 21 are connected, the bottom end of the upper pipe section 1 is inserted into the inner circle of the first connection flange 11. A sealing layer 3 is also provided between the first connection flange 11 and the second connection flange 21. In the embodiment of the present application, the sealing layer 3 can be made of high-temperature sealant, and specifically HBC-1029 silicone-free strong sealant can be selected.
[0021] When smoke is discharged from the chimney from bottom to top, the inside of the chimney is in a negative pressure state. By forming a "Z"-shaped socket structure between the first connecting flange 11, the second connecting flange 21, the upper pipe section 1, and the lower pipe section 2, and applying sealant between the first connecting flange 11 and the second connecting flange 21, the connection sealing between the upper pipe section 1 and the lower pipe section 2 can be ensured. There is no need to connect the pipe sections of the chimney by welding, which reduces welding deformation, and the upper pipe section 1 and the lower pipe section 2 have good coaxiality by fitting between the first connecting flange 11 and the second connecting flange 21.
[0022] Furthermore, an inclined chamfered surface 12 is provided on the outer edge of the bottom end of the upper pipe section 1, and a first sealing filling ring 5 is filled and arranged between the chamfered surface 12 and the inner wall of the first connecting flange 11 and the top end face of the lower pipe section 2. A second sealing filling ring 6 is arranged on the inner side of the sealing layer 3 between the first connecting flange 11 and the second connecting flange 21. In the embodiment of the present application, the first sealing filling ring 5 and the second sealing filling ring 6 are both asbestos ropes in a closed loop, and the asbestos ropes are impregnated with high-temperature sealant. By impregnating the asbestos rope with high-temperature sealant, after the upper pipe section 1 and the lower pipe section 2 are docked, the asbestos rope can be tightly attached to the outer wall between the upper pipe section 1 and the lower pipe section 2, and after the high-temperature sealant solidifies, it can stably support the asbestos rope structure, thereby further improving the sealing performance of the connection position between the upper pipe section 1 and the lower pipe section 2. In other embodiments, the first sealing filling ring 5 and the second filling sealing ring can also be high-temperature resistant perfluororubber rings.
[0023] In the embodiment of the present application, the inner walls of the upper pipe section 1 and the lower pipe section 2 are coated with an anti-corrosion coating 7 to improve the anti-corrosion performance of the inner walls of the upper pipe section 1 and the lower pipe section 2 .
[0024] Example 2
[0025] Reference Figure 2 The difference between Example 2 and Example 1 is that the structures on the first connecting flange 11 and the second connecting flange 21 are different.
[0026] In the embodiment of the present application, two support rings 111 are integrally and coaxially spaced on the top wall of the first connecting flange 11 and located on the inner side of the sealing layer 3, and a pressure ring 211 is integrally and coaxially protruded on the bottom wall of the second connecting flange 21. When the upper pipe section 1 is coaxially aligned with the lower pipe section 2, the pressure ring 211 is aligned with the gap between the two support rings 111. The width of the pressure ring 211 is smaller than the width of the gap between the two support rings 111, and the height of the pressure ring 211 protruding from the second connecting flange 21 should be smaller than the height of the support ring 111 protruding from the first connecting flange 11, and the second sealing filling ring 6 is located between the two support rings 111. The support ring 111 and the pressure ring 211 are milled from the first connecting flange 11 and the second connecting flange 21 by a milling machine.
[0027] When splicing the upper pipe section 1 and the lower pipe section 2, the pressure ring 211 is embedded between the two support rings 111, compressing the asbestos rope between the two support rings 111, and allowing the high-temperature sealant in the asbestos rope to seep into the gap between the support ring 111 and the pressure ring 211, further improving the bonding strength between the first connecting flange 11 and the second connecting flange 21.
[0028] It should be understood by those skilled in the art that, although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.
Claims
1. A chimney inner tube flange socket structure, characterized in that: The invention comprises an upper pipe section (1) and a lower pipe section (2); the external coaxial fixing sleeve at the top end of the lower pipe section (2) is provided with a first connecting flange (11); the top wall of the first connecting flange (11) is higher than the top end face of the lower pipe section (2); the inner wall of the first connecting flange (11) and the top wall of the lower pipe section (2) form a slot for inserting the bottom end of the upper pipe section (1); the external coaxial fixing sleeve at the bottom end of the upper pipe section (1) is provided with a second connecting flange (21); the bottom wall of the second connecting flange (21) is higher than the bottom end face of the upper pipe section (1); the bottom end of the upper pipe section (1) is inserted into the inner ring of the first connecting flange (11); a sealing layer (3) is provided between the first connecting flange (11) and the second connecting flange (21); the first connecting flange (11) and the second connecting flange (21) are connected and fixed by flange bolts (4).
2. The chimney inner tube flange socket structure according to claim 1, characterized in that: The sealing layer (3) is a high-temperature sealant.
3. The chimney inner tube flange socket structure according to claim 1, characterized in that: An inclined chamfered surface (12) is provided on the outer edge of the bottom end of the upper pipe section (1), and a first sealing filling ring (5) is filled between the chamfered surface (12), the inner wall of the first connecting flange (11) and the top end face of the lower pipe section (2).
4. The chimney inner tube flange socket structure according to claim 3, characterized in that: A second sealing filling ring (6) is provided between the first connecting flange (11) and the second connecting flange (21) and located on the inner side of the sealing layer (3).
5. The chimney inner tube flange socket structure according to claim 4, characterized in that: The first sealing filling ring (5) and the second sealing filling ring (6) are both asbestos ropes in a closed loop, and the asbestos ropes are impregnated with high-temperature sealant.
6. The chimney inner tube flange socket structure according to claim 5, characterized in that: Two support rings (111) are coaxially spaced apart on the top wall of the first connecting flange (11) and located on the inner side of the sealing layer (3); a pressure ring (211) is coaxially protrudingly provided on the bottom wall of the second connecting flange (21); the second sealing filling ring (6) is located between the two support rings (111); the pressure ring (211) is aligned with the gap between the two support rings (111); and the width of the pressure ring (211) is smaller than the width of the gap between the two support rings (111).
7. A chimney inner tube flange socket structure according to any one of claims 1 to 5, characterized in that: The inner walls of the upper pipe section (1) and the lower pipe section (2) are both provided with an anti-corrosion coating (7).