A tied tower support for a non-self-supporting chimney

Abstract

The utility model relates to the technical field of chemical equipment structure, especially a tower support of non self -supporting chimney, including multilayer support monomer that is set up interval along chimney height direction, each layer support monomer includes tower side support, is used for with process tower organ fixedly connected, chimney limiting frame is evenly set up in chimney outside along the circumference and reserves non -contact gap, forms non straight -line limit deputy, steel beam subassembly is located between tower side support and chimney limiting frame, one end is fixed with chimney limiting frame, and the other end is connected with tower side support through temperature insulation connecting piece, steel beam subassembly includes open beam subassembly and sealing beam subassembly, realizes standardization, modularization manufacturing, the utility model solves the mechanical coupling and temperature stress problem of traditional support, realizes the unity of stability, economy and construction convenience, especially applicable to the non self -supporting fixed of chimney in chemical industry, electric power and the field.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment structure technology, and in particular to a tower-binding support for a non-self-supporting chimney. Background Technology

[0002] In the chemical industry, chimneys are core environmental protection and production auxiliary equipment, responsible for collecting and discharging industrial waste gases into the atmosphere. When the chimney wall is thin and the height-to-diameter ratio is large, it can no longer withstand vertical and lateral loads through self-support. In the event of a strong typhoon, the chimney wall may buckle and deform due to resonance. Therefore, such chimneys need to be fixed using non-self-supporting methods, relying on external support systems to provide rigid constraints and force support, distribute loads, control displacement, and ensure stable operation.

[0003] In the early stages of developing non-self-supporting chimney technology, a bottom-mounted high-tower support scheme was adopted, which involved constructing an independent tower that matched the height of the chimney for fixation. However, as chimney height increased, the drawbacks of this scheme became apparent: it required a large area, consumed a lot of steel, was complex to construct, had a long construction period, and was subject to site limitations, making it unsuitable for certain projects.

[0004] To address these challenges, non-self-supporting tower-binding designs have become a favored solution in the industry. The core of this design is to utilize the on-site process tower, binding the chimney to it via a dedicated support structure. The rigidity of the process tower provides support for the chimney, reducing reliance on available space. Existing technologies, such as the one disclosed in Chinese patent CN216714030U, employ a connection assembly including a fixing ring and a grid-shaped linkage frame. However, this existing solution has the following drawbacks: First, it uses four linkages to limit the chimney's position, resulting in few limiting points and a line contact, which easily leads to stress concentration, adversely affecting both the chimney and the support structure. Second, the support structure connects to the tower via a large fixing ring, requiring careful avoidance of dense pipes and pre-welded components on the tower during installation. This places high demands on the net space in the tower's height direction, restricting installation location and reducing flexibility. Third, its linkage structure has limited resistance to torsional deformation, especially when the distance between the chimney and the tower is large, resulting in insufficient stability. Fourth, as a rigid connection, it lacks thermal insulation measures, allowing temperature changes in the tower to easily transfer to the support structure, affecting material properties.

[0005] Therefore, there is an urgent need for a new type of tower support structure that offers better positioning, more flexible installation, better stability, and the ability to isolate heat transfer. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model discloses a tower-binding support for a non-self-supporting chimney. This support has the advantages of good limiting effect, flexible installation, strong torsional stability, and the ability to block heat transfer.

[0007] To achieve the above technical objectives, this utility model proposes a tower-binding support for a non-self-supporting chimney, comprising multiple layers of support units spaced apart along the height of the chimney. Each support unit includes: a tower-side support for connecting to the process tower; the tower-side support includes horizontal lugs and diagonal bracing lugs, both fixed to the outer wall of the tower and arranged vertically; a chimney limiting frame, evenly arranged along the circumference of the chimney on the outer side with a reserved non-contact gap, forming a non-direct connection limiting pair; and a steel beam assembly located between the tower-side support and the chimney limiting frame. Between the frame members, one end of the steel beam is fixed to the chimney limiting frame, and the other end is connected to the tower side support through a thermal insulation connector; the steel beam assembly includes an open beam assembly and a sealing beam assembly; the open beam assembly is located on one side of the chimney, and its two ends are respectively connected to the tower side support and the chimney limiting frame; the sealing beam assembly is located on the other side of the chimney, and its two ends are respectively connected to the outer end of the open beam assembly of the chimney, and are connected through the chimney limiting frame, thereby forming a constraint structure for the chimney together with the open beam assembly.

[0008] As a preferred technical solution, the open beam assembly includes a horizontal support assembly, a vertical support assembly, a first inclined support assembly, and a second inclined support assembly; the vertical support assemblies are symmetrically arranged and vertically connected between the horizontal support assembly and the first inclined support assembly to form a first triangular support structure;

[0009] The second oblique support component is provided inside the first triangular support structure, so that a second triangular support structure is formed inside the first triangular support structure.

[0010] As a preferred technical solution, the horizontal support assembly includes two first supports arranged horizontally and in parallel, and a second support vertically connected between them; one end of the first support is fixed to the heat insulation connector of two opposite horizontal lugs on the outside of the tower, and the other end extends horizontally and passes through two opposite chimney limiting frames on the outside of the chimney.

[0011] As a preferred technical solution, the second bracket of the horizontal support assembly is provided with symmetrical first horizontal inclined beams on both sides. One end of the first horizontal inclined beam is connected to the first bracket, and the other end is connected to the second bracket. The first horizontal inclined beam near the chimney is connected through the chimney limiting frame.

[0012] As a preferred technical solution, the first inclined support component includes first inclined beams symmetrically arranged at the bottom of the first bracket, and two parallel first inclined beams are connected by a third bracket parallel to the second bracket. One end of the first inclined support component is connected to the inclined brace lug, and the other end extends to the bottom of the chimney limiting frame and is fixed to the bottom of the first bracket.

[0013] As a preferred technical solution, the angle formed between the first support and the first inclined beam is 30°-40°; the angle formed between the first support and the second inclined support component is 30°-40°.

[0014] As a preferred technical solution, the sealing beam assembly includes a fourth bracket parallel to the second bracket, used to vertically close and fix the two first brackets on the side where the chimney is located, and the fourth bracket passes through the chimney limiting frame on the outside of the chimney.

[0015] As a preferred technical solution, the single-sided gap between the chimney limiting frame and the outer wall of the chimney is 1.5mm-3mm; and / or, the distance between the outer wall of the tower and the outer wall of the chimney is L1; the distance L2 between the upper end of the second inclined support component and the outer wall of the chimney is (0.55-0.65)L1; the distance L4 between the third bracket and the vertical support component is (0.35-0.45)L1; and / or, the distance L3 between the upper end of the vertical support component and the second inclined support component is 300mm-450mm.

[0016] As a preferred technical solution, the thermal insulation connector includes a thermal insulation block connected between the tower side support and the steel beam assembly.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention successfully solves the problems of mechanical coupling and temperature stress in traditional supports, achieving a balance between stability, economy, and ease of construction. It is particularly suitable for non-self-supporting chimney fixing in chemical, power and other fields. Attached Figure Description

[0019] Figure 1 The front view of the tower-binding support of this utility model is shown;

[0020] Figure 2 A top view of the tower-binding support of this utility model is shown;

[0021] Figure 3 This is a flowchart illustrating the construction process of the tower-binding support frame of this utility model.

[0022] The above figures include the following reference numerals:

[0023] 1. Chimney; 2. Tower; 3. Steel beam assembly; 31. Horizontal support assembly; 311. First support bracket; 312. Second support bracket; 32. Vertical support assembly; 33. First diagonal support assembly; 331. First diagonal beam; 332. Third support bracket; 34. Second diagonal support assembly; 35. First horizontal diagonal beam; 36. Fourth support bracket; 37. Second horizontal diagonal beam;

[0024] 4. Horizontal support lugs; 5. Diagonal bracing lugs; 6. Chimney limiting frame; 7. Thermal insulation block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0026] This utility model provides a tower-binding support for a non-self-supporting chimney, aiming to solve the technical problems of mechanical coupling, temperature stress, and complex construction caused by the rigid connection between the chimney and the supporting structure in the prior art.

[0027] Please see Figures 1 to 2 This embodiment provides a pylon-binding support for a non-self-supporting chimney, comprising multiple layers of support units spaced apart along the chimney's height. The multi-layered structure distributes a concentrated and enormous supporting force across multiple support points, significantly improving the stress state of the chimney 1 and better controlling its lateral deflection to meet the chimney's stiffness requirements. Preferably, the pylon-binding support is evenly arranged in 10 layers along the height direction. Those skilled in the art should understand that the specific number of layers and the spacing between each layer are not limiting; they can be determined by those skilled in the art based on factors affecting fixation, such as the actual height and width of the chimney.

[0028] Each support unit mainly includes tower side supports, steel beam components 3, chimney limiting frames 6, and thermal insulation connectors.

[0029] The tower side support is used for fixed connection with the existing process tower 2 at the project site. Specifically, the tower side support includes horizontal lugs 4 and diagonal bracing lugs 5, both of which are fixed to the outer wall of the tower 2 by welding and are arranged vertically. Through the vertically distributed lug structure, the supporting force can be effectively decomposed into horizontal and vertical components, thereby transferring the load from the steel beam assembly 3 to the tower 2 body through the optimal path, making full use of the tower 2's own rigidity and enhancing the overall structural stability.

[0030] The chimney limiting frame 6 is evenly arranged circumferentially on the outer side of the chimney 1 with a reserved non-contact gap, thus forming a non-direct connection limiting pair with the chimney 1. Specifically, the chimney limiting frame 6 includes an arc-shaped baffle that forms a clearance fit with the outer wall of the chimney 1; a support frame for connecting the horizontal support beam is welded to the side of the baffle away from the chimney 1. First, the non-contact clearance fit design allows the chimney 1 to undergo limited deformation and displacement under the action of wind load, temperature changes, etc., thereby fundamentally avoiding the mechanical coupling effect between it and the tower 2 from a structural perspective, simplifying the difficulty of structural analysis. Second, the arc-shaped baffle can effectively limit the abnormal excessive displacement of the chimney 1, ensuring the operational safety of the chimney 1. Preferably, the single-sided gap L between the chimney limiting frame 6 and the outer wall of the chimney 1 is 1.5mm-3mm, to balance the limiting effect and the degree of freedom.

[0031] The steel beam assembly 3 is located between the tower side support and the chimney limiting frame 6, and is the main load-bearing component of the support system. One end of the steel beam assembly 3 is fixed to the support frame of the chimney limiting frame 6, and the other end is connected to the tower side support through a thermal insulation connector. In this embodiment, the steel beam assembly 3 is composed of multiple channel steels that are overlapped and welded together to form a spatial truss with a triangular structure. The triangular structure has better geometric stability, which can provide the maximum structural stiffness and load-bearing capacity with the least amount of material, effectively resisting loads from all directions, thereby ensuring the high strength and high stability of the entire support system.

[0032] In some specific embodiments, the steel beam assembly includes an open beam assembly and a sealing beam assembly; the open beam assembly is disposed on one side of the chimney, with its two ends connected to the tower side support and the chimney limiting frame, respectively; the sealing beam assembly is disposed on the other side of the chimney, with its two ends connected to the outer ends of the open beam assembly of the chimney and connected through the chimney limiting frame, thereby forming a constraint structure for the chimney together with the open beam assembly.

[0033] Specifically, the open beam assembly includes a horizontal support assembly 31, a vertical support assembly 32, a first inclined support assembly 33, and a second inclined support assembly 34;

[0034] The horizontal support assembly 31 includes two first supports 311 arranged horizontally and in parallel, and a second support 312 vertically connected between them; one end of the first support 311 is fixed to the heat insulation connector of two opposite horizontal lugs 4 on the outside of the tower, and the other end extends horizontally and passes through two opposite chimney limiting frames 6 on the outside of the chimney; in some specific embodiments, the second support 312 is provided with symmetrical first horizontal inclined beams 35 on both sides, one end of the first horizontal inclined beam 35 is connected to the first support 311, and the other end is connected to the second support 312, and the first horizontal inclined beam 35 near the chimney passes through and connects to the chimney limiting frame 6.

[0035] In some specific embodiments, the first inclined support assembly 33 includes first inclined beams 331 symmetrically arranged at the bottom of the first bracket 311, and two parallel first inclined beams 331 are connected by a third bracket 332 parallel to the second bracket 312. One end of the first inclined support assembly 33 is connected to the inclined brace lug 5, and the other end extends to below the chimney limiting frame 6 and is fixed to the bottom of the first bracket 311. Similarly, the second inclined support assembly 34 is in the form of an inclined beam.

[0036] In some specific embodiments, the vertical support components 32 are symmetrically arranged and vertically connected between the first bracket 311 and the first inclined beam 331 to form a first triangular support structure; a second inclined support component 34 is provided inside the first triangular support structure, the lower end of the second inclined support component 34 is fixed to the side of the first inclined beam 331 near the chimney, and the upper end is fixed to the side of the first bracket 311 near the tower, thereby forming a second triangular support structure within the first triangular support structure to enhance the support strength.

[0037] The sealing beam assembly includes a fourth bracket 36 parallel to the second bracket 312, used to vertically close and fix the two first brackets 311 on the side where the chimney is located. The fourth bracket 36 passes through the chimney limiting frame 6 on the outside of the chimney. A second horizontal inclined beam 37 is also symmetrically provided between the fourth bracket 36 and the first brackets 311, passing through and connecting the chimney limiting frame 6.

[0038] In some specific embodiments, the angle formed by the first support 311 and the first inclined beam 331 is θ, which takes a value of 30°-40°; the angle formed by the first support 311 and the second inclined support component 34 is β, which takes a value of 30°-40°.

[0039] In some specific embodiments, the distance between the outer wall of the tower and the outer wall of the chimney is L1; the distance between the upper end of the second inclined support component 34 and the outer wall of the chimney is L2, and the value is (0.55-0.65)L1; the distance between the vertical support component 32 and the upper end of the second inclined support component 34 is L3, and the value is 300mm-450mm; the distance between the third bracket 332 and the vertical support component 32 is L4, and the value is (0.35-0.45)L1.

[0040] Preferably, L1 is 1936 mm, and / or L2 is 1186 mm, and / or L3 is 300 mm, and / or L4 is 836 mm, and / or θ and / or β is 30°.

[0041] In some specific embodiments, the thermal insulation connector is used to connect the tower-side support and the steel beam assembly 3 and to block heat transfer. Specifically, the thermal insulation connector includes a thermal insulation block 7 sandwiched between the tower-side support and the steel beam assembly 3, and a bolt and nut pair passing through the thermal insulation block 7 and fastening the three together. The bolted connection is a detachable connection, which greatly facilitates on-site installation, subsequent adjustment, and maintenance, significantly reducing construction difficulty and time. The thermal insulation block 7 effectively blocks the transfer of temperature from the tower 2 to the steel beam assembly 3, avoiding performance degradation, deformation, or damage to the steel beam due to temperature stress, and ensuring the long-term reliability of the support's mechanical properties.

[0042] As a preferred embodiment, the insulation block 7 is a square pad. Experiments show that when the tower operating temperature is -196℃ to -40℃, a pine wood-impregnated asphalt pad with a thickness of 50mm is used; when the tower operating temperature is -40℃ to 100℃, a polytetrafluoroethylene (PTFE) pad with a thickness of 10mm is used; and when the tower operating temperature is 100℃ to 600℃, a calcium silicate pad with a thickness of 10mm is used. These settings can reduce the temperature transferred to the steel beam assembly to within the steel beam's tolerance range.

[0043] Tower and chimney foundation parameters: Tower inner diameter DN4300, design temperature -80 / 70℃, design pressure 6.6Mpa, height 97000mm; Chimney inner diameter DN2600, design temperature -18 / 60℃, design pressure 0.09Mpa, height 120000mm; basic wind pressure 650N / m2, seismic fortification intensity 7 degrees / 0.182g.

[0044] Analysis method: Finite element software was used to model the tower, tower support and chimney as a whole, and the stress state of the three under 15 different working conditions was analyzed. The loads involved in the simulated working conditions include design pressure, self-weight, downwind load, first-order crosswind vibration and seismic load.

[0045] Evaluation criteria: The standard for the tower support is that no plastic hinge is formed. That is, the criterion is that all sections of the steel that make up the steel beam assembly must yield. If not all sections yield, it is considered qualified.

[0046] Analysis results: The analysis shows that all 10 layers of the tower support structure exhibited varying degrees of yielding in the steel sections, but none reached a complete yielding state, and the strength of all 10 layers of the support structure was within acceptable limits. Meanwhile, the stress levels and deflection of the tower and chimney were both controlled within allowable ranges.

[0047] like Figure 3 As shown, the construction steps of the tower-binding support frame in this application are as follows:

[0048] S1. The opening beam assembly and the sealing beam assembly are pre-welded at the manufacturing plant, and the tower side support is welded to the tower; all the chimney limiting frames 6 that match the opening beam assembly are welded; the second horizontal inclined beam 37 of the sealing beam assembly is welded to its matching chimney limiting frame 6.

[0049] S2. After all equipment arrives on site, bolt the open beam assembly to the tower side support respectively, and hoist it onto the foundation together with the tower.

[0050] S3. Hoist the chimney and install it into the open beam assembly;

[0051] S4. After hoisting is completed, weld and fix the sealing beam assembly to the opening side of the opening beam assembly in the air.

[0052] This construction method achieves safe and efficient construction through factory prefabrication, on-site assembly, and a process of tower-first, chimney-later, and aerial sealing. The standardized welding of complex components in the factory ensures precision and quality; on-site only module docking is carried out, which greatly reduces the amount of high-altitude work and the construction period, and reduces safety risks; the reasonable hoisting sequence avoids equipment interference and ensures accurate positioning; finally, on-site welding of key nodes forms a complete load-bearing system, reliably guaranteeing the design strength and overall stability of the support.

[0053] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tower support for a non-self-supporting chimney, comprising multiple layers of support units spaced apart along the height of the chimney, characterized in that, Each support unit includes: a tower-side support for connecting to the process tower; the tower-side support includes horizontal lugs and diagonal bracing lugs, both fixed to the outer wall of the tower and arranged vertically; a chimney limiting frame, evenly arranged along the circumference of the chimney on the outer side of the chimney with a reserved non-contact gap to form a non-direct connection limiting pair; a steel beam assembly located between the tower-side support and the chimney limiting frame, one end of which is fixed to the chimney limiting frame, and the other end is connected to the tower-side support through a thermal insulation connector; the steel beam assembly includes an open beam assembly and a sealing beam assembly; the open beam assembly is located on one side of the chimney, with both ends connected to the tower-side support and the chimney limiting frame respectively; the sealing beam assembly is located on the other side of the chimney, with both ends connected to the outer ends of the open beam assembly and through the chimney limiting frame, thereby forming a constraint structure for the chimney together with the open beam assembly.

2. The tower-binding support according to claim 1, characterized in that, The open beam assembly includes a horizontal support assembly, a vertical support assembly, a first inclined support assembly, and a second inclined support assembly; the vertical support assemblies are symmetrically arranged and vertically connected between the horizontal support assembly and the first inclined support assembly to form a first triangular support structure; The second oblique support component is provided inside the first triangular support structure, so that a second triangular support structure is formed inside the first triangular support structure.

3. The tower-binding support according to claim 2, characterized in that, The horizontal support assembly includes two first supports arranged horizontally and in parallel, and a second support vertically connected between them; one end of the first support is fixed to the heat insulation connector of two opposite horizontal lugs on the outside of the tower, and the other end extends horizontally and passes through two opposite chimney limiting frames on the outside of the chimney.

4. The tower-binding support according to claim 3, characterized in that, The second bracket of the horizontal support assembly is provided with symmetrical first horizontal inclined beams on both sides. One end of the first horizontal inclined beam is connected to the first bracket, and the other end is connected to the second bracket. The first horizontal inclined beam near the chimney is connected through the chimney limiting frame.

5. The tower-binding support according to claim 3, characterized in that, The first inclined support assembly includes a first inclined beam symmetrically arranged at the bottom of the first bracket, and two parallel first inclined beams are connected by a third bracket parallel to the second bracket. One end of the first inclined support assembly is connected to the inclined brace lug, and the other end extends to the bottom of the chimney limiting frame and is fixed to the bottom of the first bracket.

6. The tower-binding support according to claim 5, characterized in that, The angle between the first support and the first inclined beam is 30°-40°; the angle between the first support and the second inclined support assembly is 30°-40°.

7. The tower-binding support according to claim 3, characterized in that, The sealing beam assembly includes a fourth bracket parallel to the second bracket, used to vertically close and fix the two first brackets on the side where the chimney is located, and the fourth bracket passes through the chimney limiting frame on the outside of the chimney.

8. The tower-binding support according to claim 5, characterized in that, The single-sided gap between the chimney limiting frame and the outer wall of the chimney is 1.5mm-3mm; and / or, the distance between the outer wall of the tower and the outer wall of the chimney is L1; the distance L2 between the upper end of the second inclined support component and the outer wall of the chimney is (0.55-0.65)L1; the distance L4 between the third bracket and the vertical support component is (0.35-0.45)L1; and / or, the distance L3 between the upper end of the vertical support component and the second inclined support component is 300mm-450mm.

9. The tower-binding support according to any one of claims 1 to 8, characterized in that, The thermal insulation connector includes a thermal insulation block connecting the tower side support and the steel beam assembly.

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