A type of fire-fighting smoke exhaust duct

Abstract

This utility model provides a fire-fighting smoke exhaust duct, belonging to the field of fire protection facilities technology. It includes multiple rigid pipes, flexible telescopic pipes, a support assembly, and multiple reinforcing partition plates. The rigid pipes are equipped with first connecting flanges at their ends; the flexible telescopic pipes are equipped with second connecting flanges at their ends; the rigid pipes and flexible telescopic pipes are fixedly connected by fasteners; the support assembly has multiple bottom support rods, with each bottom support rod located below the flexible telescopic pipe; one end of each bottom support rod is fixedly connected to a rigid pipe; the reinforcing partition plates are inserted inside the rigid pipes to divide them into two smoke exhaust channels. The reinforcing partition plates have multiple through holes arranged along their length, which connect the two smoke exhaust channels. The fire-fighting smoke exhaust duct provided by this utility model, with its flexible telescopic pipes and support assembly working together, improves the impact resistance of the smoke exhaust duct, reduces the risk of deformation and breakage, and ensures continuous smoke exhaust.

Description

Technical Field

[0001] This utility model belongs to the field of fire protection facilities technology, and more specifically, it relates to a fire-fighting smoke exhaust duct. Background Technology

[0002] In modern building fire safety systems, smoke exhaust ducts serve as the core carrier for delivering fire extinguishing media. Their performance directly impacts rescue efficiency and the safety of personnel and property during a fire. Due to the complexity of the fire environment, stringent requirements are placed on the stability, operational reliability, and durability of smoke exhaust ducts. Currently, smoke exhaust ducts exhibit significant shortcomings in their impact resistance when subjected to external impacts (such as collisions during building construction, equipment vibration, and geological subsidence), making them prone to deformation and even breakage. Furthermore, deformed fire exhaust ducts are susceptible to internal blockage, rendering them unusable. Utility Model Content

[0003] The purpose of this utility model is to provide a fire-fighting smoke exhaust pipe to solve the technical problems of poor impact resistance, easy deformation and internal blockage of existing smoke exhaust pipes.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a fire-fighting smoke exhaust duct, comprising:

[0005] Rigid pipes, in multiple quantities, each with a first connecting flange at its end;

[0006] The flexible telescopic tube has a second connecting flange at each end that mates with the first connecting flange; the rigid tube and the flexible telescopic tube are fixedly connected by fasteners.

[0007] The support assembly has multiple horizontally spaced bottom support rods, which are located below the flexible telescopic tube and are used to support the flexible telescopic tube; one end of each bottom support rod is fixedly connected to the rigid tube.

[0008] Multiple reinforcing partition plates are provided, each corresponding to one of the rigid pipes. The reinforcing partition plates are inserted into the rigid pipes to separate the rigid pipes into two smoke exhaust channels. The reinforcing partition plates are provided with multiple through holes arranged along the length direction to connect the two smoke exhaust channels.

[0009] In one possible implementation, the plurality of bottom support rods are divided into two groups, and one end of each group of bottom support rods is respectively installed on two adjacent rigid tubes, and the two groups of bottom support rods are arranged in a cross manner.

[0010] In one possible implementation, the support assembly further includes a plurality of side support plates arranged at vertical intervals, the plurality of side support plates being located on the lower left and right sides of the flexible telescopic tube respectively, and one side of the side support plate abutting against the flexible telescopic tube; one end of the side support plate is fixedly connected to the rigid tube.

[0011] In one possible implementation, the plurality of side support plates are divided into two groups, and one end of each group of side support plates is respectively installed on two adjacent rigid tubes. The two groups of side support plates are arranged crosswise, and the two groups of side support plates form an upper and lower support structure for the deformation of the two adjacent rigid tubes.

[0012] In one possible implementation, the flexible telescopic tube is made of fire-resistant and heat-resistant flexible material, and a sealing gasket is provided between the first connecting flange and the second connecting flange, and the sealing gasket is made of fire-resistant and heat-resistant material.

[0013] In one possible implementation, the reinforcing partition plate extends into the flexible telescopic tube from one end, forming a reinforcing section that corresponds to the second connecting flange.

[0014] In one possible implementation, the rigid tube includes a plurality of coaxially arranged connecting pipe segments, and the reinforcing partition plate passes through the plurality of connecting pipe segments and is fixedly connected to the inner walls of the plurality of connecting pipe segments.

[0015] In one possible implementation, the through holes on the reinforced partition plate correspond to the joints of two adjacent connecting pipe sections.

[0016] In one possible implementation, the rigid tube has an inspection hole and a maintenance plate detachably connected to the rigid tube on the side near the flexible telescopic tube, and the maintenance plate is sealed to the rigid tube.

[0017] In one possible implementation, the rigid tube is further provided with several reinforcing rods arranged perpendicular to the partition plate.

[0018] The beneficial effects of the fire-fighting smoke exhaust duct provided by this utility model are as follows: Compared with the prior art, the fire-fighting smoke exhaust duct of this utility model uses a rigid pipe as the main body, which is precisely connected to the second connecting flange of the flexible telescopic pipe through the first connecting flange at the end, and then fixed with fasteners to form a sealed connection. This structure not only retains the overall support strength of the rigid pipe, but also absorbs external impact energy by utilizing the elastic characteristics of the flexible telescopic pipe. When encountering external forces such as construction collisions, equipment vibrations, or geological subsidence, the flexible telescopic pipe can buffer the impact force through its own deformation, avoiding the rigid pipe from being directly stressed and breaking. The multiple horizontally spaced bottom support rods of the support component further enhance the stability of the flexible telescopic pipe. The reinforced partition plate, as the core component for preventing blockage, is inserted into the rigid pipe one by one, dividing the rigid pipe into two independent smoke exhaust channels. At the same time, the smoke from the two smoke exhaust channels is connected through the guide holes arranged along the length direction. This design ensures that even if one or more sections of the smoke exhaust channel are blocked due to local deformation, the smoke can still flow to the other smoke exhaust channel through the guide holes. During operation, first, fix the position of the rigid pipe according to the installation path. Then, seal and tighten the rigid pipe and flexible expansion pipe through the first and second connecting flanges. Next, install the bottom support rod below the flexible expansion pipe, ensuring that the support points are evenly spaced horizontally. Finally, accurately insert the reinforcing partition plate into the rigid pipe and fix it in place. Check the unobstructedness of the guide hole to complete the installation. In this way, the flexible expansion pipe and support components work together to improve impact resistance and reduce the risk of deformation and breakage. The design of the reinforcing partition plate and guide hole provides anti-clogging redundancy, ensuring continuous smoke exhaust. The combination of rigid and flexible structures balances pipe strength and buffering capacity, adapting to complex fire protection environments and effectively improving the reliability of smoke exhaust during fire rescue. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A cross-sectional view of a fire-fighting smoke exhaust duct provided in an embodiment of this utility model;

[0021] Figure 2 A front view of a fire-fighting smoke exhaust duct provided in an embodiment of this utility model;

[0022] Figure 3 A top view of a fire-fighting smoke exhaust duct provided in an embodiment of this utility model;

[0023] Figure 4This is a schematic diagram of the structure of the reinforced partition plate provided in an embodiment of the present utility model;

[0024] Figure 5 A partial schematic diagram of a fire-fighting smoke exhaust duct provided in an embodiment of this utility model;

[0025] Figure 6 Cross-sectional view of the rigid tube provided in the embodiment of this utility model Figure 1 ;

[0026] Figure 7 Cross-sectional view of the rigid tube provided in the embodiment of this utility model Figure 2 .

[0027] The following are the labeling elements in the figure:

[0028] 10. Rigid pipe; 11. First connecting flange; 12. Reinforcing section; 13. Connecting pipe section; 14. Inspection hole; 15. Inspection plate; 16. Reinforcing rod; 20. Flexible telescopic pipe; 21. Second connecting flange; 22. Fastener; 30. Support assembly; 31. Bottom support rod; 32. Side support plate; 40. Reinforced partition plate; 41. Smoke exhaust duct; 42. Through hole. Detailed Implementation

[0029] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0030] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0031] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] Please see Figures 1 to 7 The present invention provides a fire-fighting smoke exhaust duct. A fire-fighting smoke exhaust duct includes a rigid pipe 10, a flexible telescopic pipe 20, a support assembly 30, and a reinforcing partition plate 40. The rigid pipe 10 is multiple in number, and each end is provided with a first connecting flange 11. Each end of the flexible telescopic pipe 20 is provided with a second connecting flange 21 that mates with the first connecting flange 11. The rigid pipe 10 and the flexible telescopic pipe 20 are fixedly connected by fasteners 22. The support assembly 30 has multiple horizontally spaced bottom support rods 31, which are located below the flexible telescopic pipe 20 and used to support it. One end of each bottom support rod 31 is fixedly connected to the rigid pipe 10. The reinforcing partition plate 40 is multiple in number, corresponding one-to-one with the rigid pipe 10. The reinforcing partition plate 40 passes through the rigid pipe 10 and is used to divide the rigid pipe 10 into two smoke exhaust channels 41. The reinforcing partition plate 40 has multiple through holes 42 arranged along its length, which are used to connect the two smoke exhaust channels 41.

[0034] Compared with the prior art, the fire-fighting smoke exhaust duct provided by this utility model has a rigid pipe 10 as the main body of the duct. The rigid pipe 10 is precisely connected to the second connecting flange 21 of the flexible telescopic pipe 20 via a first connecting flange 11 at one end, and then fixed with fasteners 22 to form a sealed connection. This structure retains the overall support strength of the rigid pipe 10 while utilizing the elastic characteristics of the flexible telescopic pipe 20 to absorb external impact energy. When encountering external forces such as construction collisions, equipment vibrations, or geological subsidence, the flexible telescopic pipe 20 can buffer the impact force through its own deformation, preventing the rigid pipe 10 from directly bearing force and breaking. Multiple horizontally spaced bottom support rods 31 of the support assembly 30 further enhance the stability of the flexible telescopic pipe 20. The reinforced partition plate 40, as the core component for preventing blockage, is inserted into the rigid pipe 10 one-to-one, dividing the rigid pipe 10 into two independent smoke exhaust channels 41. Simultaneously, the smoke from the two smoke exhaust channels 41 is connected through guide holes 42 arranged along the length direction. This design ensures that even if one or more sections of the smoke exhaust duct 41 become blocked due to local deformation, the smoke can still flow to another smoke exhaust duct 41 through the guide hole 42. During operation, first, fix the position of the rigid pipe 10 according to the installation path. Then, seal and tighten the rigid pipe 10 and the flexible telescopic pipe 20 through the first connecting flange 11 and the second connecting flange 21. Next, install the bottom support rod 31 below the flexible telescopic pipe 20, ensuring that the support points are evenly spaced horizontally. Finally, precisely insert the reinforcing partition plate 40 into the rigid pipe 10 and fix it in place. Checking the unobstructedness of the guide hole 42 completes the installation. In this way, the flexible telescopic pipe 20 and the support assembly 30 work together to improve impact resistance and reduce the risk of deformation and breakage. The design of the reinforcing partition plate 40 and the guide hole 42 provides anti-blockage redundancy, ensuring continuous smoke exhaust. The combination of rigid and flexible structures balances pipe strength and buffering capacity, adapting to complex fire protection environments and effectively improving the reliability of smoke exhaust during fire rescue.

[0035] Please see Figures 1 to 3 , Figure 5 As a specific embodiment of the fire-fighting smoke exhaust duct provided by this utility model, multiple bottom support rods 31 are divided into two groups, and one end of each group of bottom support rods 31 is respectively installed on two adjacent rigid pipes 10, and the two groups of bottom support rods 31 are arranged in a cross pattern. The bottom support rods 31 are divided into two groups, and one end of each group is fixed to an adjacent rigid pipe 10, with the two groups of support rods arranged in a cross pattern. This cross structure forms a stable support grid below the flexible telescopic pipe 20. Due to the cross arrangement, when encountering external impact, the two groups of bottom support rods 31 will not interfere with or collide with each other, ensuring that the impact force acts on the flexible telescopic pipe 20.

[0036] Please see Figures 1 to 3As a specific embodiment of the fire-fighting smoke exhaust duct provided by this utility model, the support assembly 30 also has multiple side support plates 32 arranged vertically at intervals. These side support plates 32 are located on the lower left and right sides of the flexible telescopic pipe 20, with one side of each side support plate 32 abutting against the flexible telescopic pipe 20. One end of each side support plate 32 is fixedly connected to the rigid pipe 10. The multiple side support plates 32 added to the support assembly 30 are arranged at intervals in the vertical direction, located on the lower left and right sides of the flexible telescopic pipe 20, with one side tightly abutting against the outer wall of the flexible telescopic pipe 20 and the other end fixedly connected to the rigid pipe 10, forming a lateral limiting support structure. This design addresses the problem of the flexible telescopic pipe 20 being susceptible to lateral impact deformation by using symmetrical side support plates 32 to constrain the flexible telescopic pipe 20 in the horizontal direction.

[0037] Please see Figures 1 to 3 As a specific embodiment of the fire-fighting smoke exhaust duct provided by this utility model, multiple side support plates 32 are divided into two groups, and one end of each group of side support plates 32 is respectively installed on two adjacent rigid pipes 10. The two groups of side support plates 32 are arranged in a cross pattern, forming an upper and lower support structure for the deformation of the two adjacent rigid pipes 10. The side support plates 32 are divided into two groups, with one end of each group fixed to an adjacent rigid pipe 10. The two groups of support plates are arranged in a cross pattern, forming an upper and lower support structure that can adapt to the deformation of the rigid pipes 10. When the smoke exhaust duct encounters an external impact that causes the rigid pipes 10 to shift or deform, the two groups of side support plates 32 arranged at intervals can form a collision buffer to alleviate and reduce the degree of deformation and damage to the impacted rigid pipes 10. This cross structure can disperse the impact force from a single rigid pipe 10 to adjacent pipes and the support system, avoiding local stress concentration that could cause pipe breakage.

[0038] As a specific embodiment of the fire-fighting smoke exhaust duct provided by this utility model, the flexible expansion pipe 20 is made of fire-resistant and heat-resistant flexible material. A sealing gasket is provided between the first connecting flange 11 and the second connecting flange 21, and the sealing gasket is also made of fire-resistant and heat-resistant material. The flexible expansion pipe 20 is made of fire-resistant and heat-resistant flexible material to ensure that it can maintain its elastic deformation ability to buffer impact in a high-temperature smoke environment, and will not age or be damaged due to high temperature. A sealing gasket made of fire-resistant and heat-resistant material is added at the joint between the first connecting flange 11 and the second connecting flange 21. The heat resistance of the flexible material ensures the structural stability of the pipeline under high-temperature fire conditions and avoids loss of buffering function due to material failure. The sealing gasket forms a reliable seal at the flange connection, which can prevent smoke leakage even in a high-temperature environment. Combined with the connection structure of the rigid pipe 10 and the flexible expansion pipe 20, it retains the impact-resistant elastic buffering ability and strengthens the overall sealing performance, effectively ensuring the continuity and safety of the smoke exhaust process and improving the applicability of the pipeline in complex fire-fighting environments.

[0039] Please see Figure 1 and Figure 5 As a specific embodiment of the fire-fighting smoke exhaust duct provided by this utility model, the end of the reinforcing partition plate 40 near the flexible telescopic pipe 20 extends into the flexible telescopic pipe 20 to form a reinforcing section 12, which corresponds to the second connecting flange 21. This design extends the supporting function of the reinforcing partition plate 40 from the rigid pipe 10 to the connection between the flexible telescopic pipe 20 and the rigid pipe 10, and the reinforcing section 12 provides structural support for the area of ​​the flexible telescopic pipe 20 near the flange. When subjected to impact, it reduces excessive deformation at the connection point due to concentrated stress, preventing local collapse and blockage at the connection between the flexible telescopic pipe 20 and the rigid pipe 10.

[0040] Please see Figure 6 and Figure 7 As a specific embodiment of the fire-fighting smoke exhaust duct provided by this utility model, the rigid pipe 10 includes multiple coaxially arranged connecting pipe sections 13, and a reinforcing partition plate 40 passes through the multiple connecting pipe sections 13 and is fixedly connected to the inner wall of the multiple connecting pipe sections 13. The rigid pipe 10 is composed of multiple coaxially arranged connecting pipe sections 13, and the reinforcing partition plate 40 passes through all connecting pipe sections 13 and is fixedly connected to the inner wall of each connecting pipe section 13. The segmented structure facilitates the transportation, installation and on-site assembly of the rigid pipe 10, and adapts to installation requirements of different lengths; the through-fixation of the reinforcing partition plate 40 integrates the multiple connecting pipe sections 13 into an integral load-bearing structure, which greatly improves the overall structural strength of the rigid pipe 10. When encountering an impact, it can disperse the force to avoid independent deformation of a single pipe section, while the partition plate continues the dual-channel separation function, and the through hole 42 ensures that the smoke can still be smoothly diverted at the pipe section connection.

[0041] Please see Figure 6 and Figure 7 As a specific embodiment of the fire-fighting smoke exhaust duct provided by this utility model, the through holes 42 on the reinforced partition plate 40 correspond to the joints of two adjacent connecting pipe sections 13. The joints of the connecting pipe sections 13 are weak points in the pipe structure, which are prone to deformation due to impact, leading to local blockage. The through holes 42, corresponding to this location, can accurately divert the flow. When deformation at the joint affects the single-channel smoke exhaust, the smoke can quickly flow through the corresponding through holes 42 to the other smoke exhaust channel 41, avoiding interruption of smoke exhaust due to local blockage. At the same time, the corresponding arrangement of the through holes 42 allows the functions of the two smoke exhaust channels 41 to be effectively connected at the joint, strengthening the reliability of smoke exhaust at the pipe segment connection points. This not only specifically addresses the risk of blockage at weak points but also ensures the continuity of smoke flow.

[0042] Please see Figure 1 and Figure 5 As a specific embodiment of the fire-fighting smoke exhaust duct provided by this utility model, the rigid pipe 10 has an inspection hole 14 and a detachable inspection plate 15 connected to the rigid pipe 10 on the side near the flexible telescopic pipe 20, and the inspection plate 15 is sealed to the rigid pipe 10. The inspection hole 14 allows easy access to the connection between the rigid pipe 10 and the flexible telescopic pipe 20 and the internal reinforcing partition plate 40, facilitating daily inspection of the internal condition of the pipe, clearing possible blockages, or repairing damaged parts. The detachable inspection plate 15 ensures no smoke leakage in the non-maintenance state through a sealed connection, without affecting the smoke exhaust sealing performance; it can be quickly disassembled when maintenance is required, without the need for complete pipe disassembly, greatly reducing maintenance difficulty and cost. Especially after the pipe is subjected to impact, the internal deformation and blockage can be checked in time through the inspection hole 14 and targeted treatment can be carried out to ensure the continuous and stable operation of the pipe, improving maintenance convenience and emergency response efficiency.

[0043] Please see Figure 1 and Figure 6 As a specific embodiment of the fire-fighting smoke exhaust duct provided by this utility model, the rigid pipe 10 is further provided with several reinforcing rods 16 arranged perpendicular to the partition plate. The reinforcing rods 16 are fixedly connected at both ends to the inner wall of the rigid pipe 10 and the reinforced partition plate 40, respectively, forming a cross-support structure. The reinforcing rods 16 provide stable vertical support to the reinforced partition plate 40, enhancing its resistance to deformation under stress. When the rigid pipe 10 encounters impact or vibration, the reinforcing rods 16 can disperse lateral forces, preventing the partition plate from bending, shifting, or breaking due to excessive force. Simultaneously, the connection between the reinforcing rods 16 and the reinforced partition plate 40 and the inner wall of the rigid pipe 10 strengthens the overall structural strength of the duct, reduces the risk of deformation of the rigid pipe 10 itself, and ensures that the two smoke exhaust channels 41 formed by the partition always maintain their integrity. Combined with the diversion function of the guide hole 42, this effectively prevents smoke exhaust blockage caused by internal structural deformation.

[0044] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fire-fighting smoke exhaust duct, characterized in that, include: Rigid pipes, in multiple quantities, each with a first connecting flange at its end; The flexible telescopic tube has a second connecting flange at each end that mates with the first connecting flange; the rigid tube and the flexible telescopic tube are fixedly connected by fasteners. The support assembly has multiple horizontally spaced bottom support rods, which are located below the flexible telescopic tube and are used to support the flexible telescopic tube; one end of each bottom support rod is fixedly connected to the rigid tube. Multiple reinforcing partition plates are provided, each corresponding to one of the rigid pipes. The reinforcing partition plates are inserted into the rigid pipes to separate the rigid pipes into two smoke exhaust channels. The reinforcing partition plates are provided with multiple through holes arranged along the length direction to connect the two smoke exhaust channels.

2. The fire-fighting smoke exhaust duct as described in claim 1, characterized in that, The multiple bottom support rods are divided into two groups, and one end of each group of bottom support rods is installed on two adjacent rigid tubes, and the two groups of bottom support rods are arranged in a cross manner.

3. The fire-fighting smoke exhaust duct as described in claim 2, characterized in that, The support assembly also has multiple side support plates arranged at intervals, with the multiple side support plates located on the lower left and right sides of the flexible telescopic tube respectively, and one side of the side support plate abutting against the flexible telescopic tube; one end of the side support plate is fixedly connected to the rigid tube.

4. The fire-fighting smoke exhaust duct as described in claim 3, characterized in that, The multiple side support plates are divided into two groups, and one end of each group of side support plates is installed on two adjacent rigid tubes. The two groups of side support plates are arranged in a cross manner, and the two groups of side support plates form an upper and lower support structure for the deformation of the two adjacent rigid tubes.

5. The fire-fighting smoke exhaust duct as described in claim 1, characterized in that, The flexible telescopic tube is made of fire-resistant and heat-resistant flexible material. A sealing gasket is provided between the first connecting flange and the second connecting flange, and the sealing gasket is made of fire-resistant and heat-resistant material.

6. The fire-fighting smoke exhaust duct as described in claim 1, characterized in that, The reinforcing partition plate extends into the flexible telescopic tube from one end, forming a reinforcing section, which corresponds to the second connecting flange.

7. The fire-fighting smoke exhaust duct as described in claim 1, characterized in that, The rigid pipe includes multiple coaxially arranged connecting pipe sections, and the reinforcing partition plate passes through the multiple connecting pipe sections and is fixedly connected to the inner wall of the multiple connecting pipe sections.

8. The fire-fighting smoke exhaust duct as described in claim 7, characterized in that, The through holes on the reinforced partition plate correspond to the joints of the two adjacent connecting pipe sections.

9. The fire-fighting smoke exhaust duct as described in any one of claims 1-8, characterized in that, The rigid tube has an inspection hole and a maintenance plate detachably connected to the rigid tube on the side near the flexible telescopic tube, and the maintenance plate is sealed to the rigid tube.

10. The fire-fighting smoke exhaust duct as described in any one of claims 1-8, characterized in that, The rigid tube is also provided with several reinforcing rods arranged perpendicular to the partition plate.

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