High-temperature flame-retardant wiring pipeline

Abstract

The invention relates to the technical field of pipeline connection, in particular to a high-temperature flame-retardant wiring pipeline which comprises an upper flame-retardant pipeline, connecting flanges and a lower flame-retardant pipeline, the two connecting flanges are installed at the end of the upper flame-retardant pipeline and the end of the lower flame-retardant pipeline respectively, and a plurality of vertical grooves are formed in the inner circumference of the lower flame-retardant pipeline; the device further comprises a connecting cylinder, an air inlet through groove, a balance weight plate, a positioning magnetic block, an inner support, a movable transmission assembly and a driving assembly, and the connecting cylinder is installed between the two connecting flanges. Rotation and upward movement are achieved through the driving assembly by means of flue gas, after upward movement, the counterweight plate is driven to rotate in one direction by means of the movable transmission assembly, the effect of a rotating stabilizer is achieved, and external air is extracted into a pipeline to be mixed with high-temperature flue gas to reduce the temperature in the pipeline; the problems that gaps are generated at the joint of the smoke exhaust pipeline due to the influence of thermal expansion and cold contraction, and the joint of the flame-retardant pipeline is accelerated to fall off and even is bent and deformed under the action of strong wind are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline connection, and particularly to a high-temperature flame-retardant wiring pipeline. Background Art

[0002] An offshore platform is a structure that provides production and living facilities for activities such as drilling, oil production, shipping, observation, navigation, and construction at sea. The smoke exhaust pipeline on the offshore platform is a part of the important infrastructure of the platform, which discharges the flue gas generated by combustion equipment (such as main engines, generator sets, etc.) to the outside of the platform to ensure the air quality inside the platform and avoid the impact of flue gas on the internal environment and personnel of the platform.

[0003] To ensure that the discharged flue gas is far away from the offshore platform, the high-temperature smoke exhaust pipeline is usually set to be relatively long. When arranging the high-temperature flue gas discharge pipeline, multiple short pipelines need to be connected and fixed in sequence. In the prior art, flanges and bolts are mostly used to install and connect the pipelines. However, the temperature of the flue gas generated during the combustion of the combustion equipment can reach 400°C, and the wind force in the marine environment is relatively large. Although the wind force can cool the outside of the smoke exhaust pipeline to a certain extent, after the combustion equipment stops working, it will accelerate the cooling of the smoke exhaust pipeline, resulting in a large temperature change of the smoke exhaust pipeline in a short time. The thermal expansion and contraction constraint during the temperature change of the high-temperature smoke exhaust pipeline will generate thermal loads, which will lead to thermal stress in the pipe system. The flanges and installation bolts at the pipeline joints are affected by the thermal stress and generate gaps. After a period of time, gaps will appear at the joints of the smoke exhaust pipeline, which will not only cause poor exhaust effect, but also, due to the relatively large wind force, the pipeline will sway back and forth, causing the connected smoke exhaust pipeline to separate, fall off, or even bend and deform.

[0004] Therefore, a high-temperature flame-retardant wiring pipeline is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-temperature flame-retardant wiring pipeline. When exhausting smoke, the driving component is driven to rotate and move upward by the flue gas. After moving upward, the driving component drives the counterweight plate to rotate continuously through the movable transmission component, playing the role of a rotary stabilizer. The rotating counterweight plate cooperates with the air inlet through groove to extract external air into the pipeline and mix it with the high-temperature flue gas to reduce the temperature inside the pipeline. In this way, the problem that the connection joints of the smoke exhaust pipeline are affected by thermal expansion and contraction and gaps are generated, and the connection parts of the flame-retardant pipeline are accelerated to fall off or even bend and deform under the strong wind is solved. It has the effect of fully ensuring the use stability of the pipeline and effectively extending the stable period of the high-temperature smoke exhaust pipeline.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] An offshore platform is located in a vast marine environment. The heat capacity of the ocean is much larger than that of the land, which means the ocean can absorb and store more heat. When the sun irradiates the ocean and land surfaces, the ocean can maintain its temperature more stably, while the temperature of the land changes more drastically. This temperature difference causes a pressure gradient between the ocean and the land, thereby generating wind. In addition, the ocean surface is relatively smooth with less friction, so the wind can move faster over the ocean and the wind speed increases accordingly. Therefore, when installing and connecting the smoke exhaust pipes on the offshore platform, the influence of wind needs to be fully considered. When the combustion equipment stops operating, no more flue gas is generated in the smoke exhaust pipe. Under the action of strong wind, the cooling of the smoke exhaust pipe is accelerated, and the temperature of the smoke exhaust pipe changes greatly in a short time. The thermal expansion and contraction constraints generated by the sudden temperature change of the high-temperature smoke exhaust pipe produce thermal loads, which will result in relatively large thermal stresses in the pipe system. The flanges and installation bolts at the pipe joints will inevitably have gaps under the influence of thermal stress, and the gaps generated by the rapid temperature change of the smoke exhaust pipes on the offshore platform will be larger. After the gaps are generated, the pipes will shake frequently under the influence of wind, resulting in the rapid detachment of the connection positions of the smoke exhaust pipes. Therefore, the present invention designs the following solutions for the phenomenon that the smoke exhaust pipes on the offshore platform are prone to detachment due to the long-term action of strong wind.

[0008] A high-temperature flame-retardant wiring pipe, comprising an upper flame-retardant pipe, a connecting flange, and a lower flame-retardant pipe. The two connecting flanges are respectively installed at the ends of the upper flame-retardant pipe and the lower flame-retardant pipe. A plurality of vertical grooves are provided on the inner circumference of the lower flame-retardant pipe. It also includes a connecting cylinder, an air inlet through groove, a counterweight plate, a positioning magnet, an inner support, a movable transmission assembly, and a driving assembly. The connecting cylinder is installed between the two connecting flanges. The air inlet through grooves are distributed in an annular array on the outer circumference of the connecting cylinder. The number of counterweight plates is the same as the number of air inlet through grooves, and the counterweight plates are arranged in contact with the inner circumference of the connecting cylinder. The positioning magnets are embedded in the air inlet through grooves. The inner support is installed on the inner top surface of the connecting cylinder. The movable transmission assembly is installed and connected to the inner support and is in contact with the counterweight plates. The driving assembly is installed and limited on the inner circumference of the lower flame-retardant pipe. When the high-temperature hot air passes through the lower flame-retardant pipe and the upper flame-retardant pipe, the driving assembly rotates and moves upward. When the driving assembly moves upward, it drives the movable transmission assembly and the counterweight plates to rotate. When the counterweight plates rotate, they guide the cold air outside the connecting cylinder into the upper flame-retardant pipe.

[0009] In the above scheme, the flue gas generated when the combustion equipment is started is as high as 400°C, and the flue gas flow rate is fast and has a certain pressure. When the high-temperature flue gas enters the connecting tube at the connection between the upper flame-retardant pipe and the lower flame-retardant pipe, the flue gas will drive the blades and the rings to rotate when passing through the drive assembly, and the lifting shaft and the blades will move upward under the action of pressure, so that the drive assembly and the movable transmission assembly form a power connection, thereby driving the movable transmission assembly to rotate, and then driving the counterweight plate with a certain weight to rotate. When the counterweight plate rotates, it fits the inner circumference of the connecting tube, and constantly overlaps and separates with the air inlet groove. It can not only continuously draw outside air into the connecting tube, so that the high-temperature flue gas is fully mixed with the outside air, greatly reduce the temperature inside the pipe, and reduce the temperature difference between the pipe before and after the combustion equipment is shut down, which can not only greatly improve the high temperature resistance of the pipe, but also the counterweight plate that continuously increases the rotation speed can play the role of a rotary compensator, thereby improving the wind resistance between the upper flame-retardant pipe, the connecting tube and the lower flame-retardant pipe, thereby effectively preventing the connection part of the smoke exhaust pipe from being easily separated and falling off.

[0010] Preferably, the end of the counterweight plate is constructed with an inclined surface, and the inclined surface is located at the front side of the counterweight plate in the rotation direction. The counterweight plate is made of a metal plate, and the height of the counterweight plate is greater than the height of the air inlet slot.

[0011] In the above scheme, under the action of the inclined surface, when the counterweight plate rotates, the inclined surface can be used to draw the outside air flowing to the air inlet slot into the connecting tube, and the air extraction volume can be increased as much as possible; the steel counterweight plate slowly stops rotating after the combustion equipment is shut down, and the attraction of the magnetic block can accelerate the counterweight plate to stop rotating, and make the counterweight plate overlap with the air inlet slot after stopping rotation, thereby blocking the air inlet slot.

[0012] Preferably, the movable transmission assembly includes a separation shaft, a connecting frame and a reinforcement ring. The top of the separation shaft is rotatably mounted on the inner bracket, the connecting frame is limitedly mounted on the outer periphery of the separation shaft, the reinforcement ring is mounted on the end of the connecting frame, and the bottom surface of the reinforcement ring is fit-connected to the top of the counterweight plate, the bottom of the separation shaft extends into the drive assembly, and a bottom ring is mounted on the bottom end of the separation shaft, and the bottom of the bottom ring is configured with card grooves distributed in a circular array.

[0013] In the above scheme, the height of the separation shaft is constant. When the driving assembly rotates and moves upward, the separation shaft and the driving assembly form a connection structure, and then the counterweight plate is driven to rotate through the rotation of the reinforcement ring.

[0014] Preferably, the driving assembly includes blades, a collar, a lifting shaft, a rotating cylinder, a support rod and a limit block. The blades are arranged on the inner side of the connecting cylinder, and the ends of the blades are plugged into the collar. The lifting shaft passes through the collar, and the rotating cylinder is rotatably arranged on the outer periphery of the bottom of the lifting shaft. The support rod is installed on the outer periphery of the rotating cylinder. The limit block is slidably arranged in the vertical groove, and the limit block is installed on the end of the support rod.

[0015] In the above solution, since the discharged high-temperature flue gas has a certain pressure and a relatively high flow rate, when the flue gas passes through the blades, the kinetic energy of the flue gas is used to drive the blades and the collar to rotate, and then drive the lifting shaft and the rotating cylinder to rotate together. In addition, under the push of the high-temperature flue gas pressure, the blades drive the lifting shaft to move upward along the chute inside the rotating cylinder.

[0016] Preferably, a cylindrical groove is formed at the top of the lifting shaft, the bottom ring is located in the cylindrical groove, a plurality of trapezoidal blocks are fixed in the cylindrical groove, a through rod is fixed at the bottom of the lifting shaft, a square block is fixed at the bottom of the through rod, a chute is constructed at the top of the rotating cylinder, the upper end of the chute is adapted to the through rod, the lower end of the chute is adapted to the square block, and the height value of the part where the chute is adapted to the square block is greater than the thickness value of the square block.

[0017] In the above solution, with the cooperation of the trapezoidal blocks and the card slots, after the combustion equipment is started, the lifting shaft moves upward, and the blades and the collar rotate to provide power for the counterweight plate. When there is no longer high-temperature flue gas generated after the combustion equipment stops, due to the counterweight plate continuing to rotate under the action of inertia, at this time, under the action of the trapezoidal blocks and the card slots, the trapezoidal blocks can be quickly withdrawn from the card slots by using the hypotenuse, so that the power transmission between the lifting shaft and the separation shaft is lost.

[0018] Preferably, a plurality of slots are formed on the outer periphery of the collar and are distributed in an annular array, and the number of slots is the same as the number of blades.

[0019] In the above solution, the slots are used to conveniently install the blades on the outer periphery of the collar. When the blades are damaged, they can be replaced independently, thereby reducing the later maintenance cost.

[0020] Preferably, the outer periphery of the counterweight plate is provided with an arc surface having the same curvature as the inner periphery of the connecting cylinder, and the inclined surface is provided on the inner periphery of the counterweight plate.

[0021] In the above solution, when the counterweight plate rotates, it fits and moves along the inner periphery of the connecting cylinder, which can fully ensure the stability of the counterweight plate during rotation.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. After connecting the upper flame-retardant pipe and the lower flame-retardant pipe, when the flue gas passes through the driving assembly, it drives the driving assembly to move upward and rotate simultaneously. After moving upward, the driving assembly forms a transmission structure with the movable transmission assembly. Thus, the counterweight plate is driven to rotate unidirectionally through the movable transmission assembly, forming a rotary compensator, which improves the stability among the upper flame-retardant pipe, the connecting cylinder and the lower flame-retardant pipe. In addition, when the counterweight plate rotates, it cooperates with the air inlet slot, continuously extracting external air into the connecting cylinder. The external low-temperature air is mixed with the high-temperature flue gas, thereby greatly reducing the temperature in the pipe, narrowing the temperature difference of the pipe before and after the combustion equipment stops, reducing the stress influence caused by the thermal expansion and contraction of the pipe material, fully ensuring the stability of the pipe connection, and further extending the stable period after the pipe connection.

[0024] 2. Through the arranged air inlet slot, counterweight plate and positioning magnet block, after the combustion equipment stops, the magnet attracts the middle part of the counterweight plate, which can not only make the counterweight plate stop rotating quickly, but also stop the counterweight plate at the position coinciding with the air inlet slot, ensuring that the connecting cylinder is in a closed state, preventing foreign objects from entering the pipe through the air inlet slot, and thus being beneficial to extending the service life of the pipe.

[0025] 3. Through the arranged separation shaft, lifting shaft and rotating cylinder, under the cooperation of the trapezoidal block and the clamping slot, after the combustion equipment starts, the lifting shaft moves upward, and the trapezoidal block slowly enters the clamping slot. The blades and the collar rotate to provide power for the counterweight plate; after the combustion equipment stops, the counterweight plate continues to rotate under the action of inertia, while the blades lose the power input of the flue gas, and the counterweight block provides power for the blades. The hypotenuse can be used to quickly withdraw the trapezoidal block from the clamping slot, and the lifting shaft and the separation shaft lose power transmission. So that when starting next time, the blades can rotate to a certain speed and then drive the overall heavy counterweight plate to rotate, ensuring that the blades driving the counterweight plate to rotate will not cause a large amount of flue gas to accumulate in the pipe, and ensuring the smooth discharge of the flue gas in the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the overall structural schematic diagram of the present invention;

[0027] Figure 2 is the structural schematic diagram of the upper flame-retardant pipe of the present invention;

[0028] Figure 3 is the sectional view of the connecting cylinder of the present invention;

[0029] Figure 4 is the structural schematic diagram of the movable transmission assembly and the driving assembly of the present invention;

[0030] Figure 5 is the structural schematic diagram of the movable transmission assembly of the present invention;

[0031] Figure 6Schematic structural diagram of the support rod of the present invention;

[0032] Figure 7 Schematic structural diagram of the drive assembly of the present invention;

[0033] Figure 8 Exploded view of the separation shaft, lifting shaft and rotating cylinder of the present invention;

[0034] Figure 9 Cross-sectional view of the connecting cylinder of the present invention.

[0035] In the figure: 1, upper flame-retardant pipeline; 2, connecting flange; 3, connecting cylinder; 4, air inlet through groove; 5, counterweight plate; 51, inclined surface; 6, positioning magnet; 7, lower flame-retardant pipeline; 71, vertical groove; 8, inner support; 9, movable transmission assembly; 91, separation shaft; 911, bottom ring; 912, card slot; 92, connecting frame; 93, reinforcing ring; 10, drive assembly; 101, blade; 102, collar; 1021, slot; 103, lifting shaft; 104, rotating cylinder; 105, support rod; 106, limiting block; 1031, columnar groove; 1032, trapezoidal block; 1033, through rod; 1034, square block; 1041, sliding groove. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Please refer to Figures 1 to 9 , the present invention provides a high-temperature flame-retardant wiring pipeline, and the technical solutions are as follows:

[0038] Refer to Figure 1 , Figure 2 and Figure 3, a high-temperature flame-retardant wiring pipeline, comprising an upper flame-retardant pipeline 1, connecting flanges 2, and a lower flame-retardant pipeline 7. The two connecting flanges 2 are respectively installed at the ends of the upper flame-retardant pipeline 1 and the lower flame-retardant pipeline 7. A plurality of vertical grooves 71 are provided on the inner circumference of the lower flame-retardant pipeline 7. It also includes a connecting cylinder 3, an air inlet through groove 4, a counterweight plate 5, a positioning magnet 6, an inner support 8, a movable transmission assembly 9, and a driving assembly 10. The connecting cylinder 3 is installed between the two connecting flanges 2. The inner and outer sides of the upper flame-retardant pipeline 1, the connecting cylinder 3, and the lower flame-retardant pipeline 7 are all electroplated with a zinc-iron alloy coating. The zinc-iron alloy coating has excellent anti-corrosion performance, and its anti-corrosion ability is superior to that of ordinary galvanized coatings. In addition, the zinc-iron alloy coating can form a dense oxide protective film in a corrosive environment, further improving its anti-corrosion performance, which is particularly suitable for use scenarios in the marine environment; the connecting flange 2 is fixedly installed with the connecting cylinder 3 by bolts. The air inlet through grooves 4 are arranged in an annular array on the outer circumference of the connecting cylinder 3. The number of counterweight plates 5 is the same as the number of air inlet through grooves 4, and the counterweight plates 5 are arranged in contact with the inner circumference of the connecting cylinder 3. The positioning magnets 6 are embedded in the air inlet through grooves 4. The inner support 8 is installed on the inner top surface of the connecting cylinder 3, reserving a large space for the installation of the driving assembly 10, so that the driving assembly 10 can extend into the connecting cylinder 3. The movable transmission assembly 9 is installed and connected with the inner support 8. The movable transmission assembly 9 is located inside the connecting cylinder 3, and the movable transmission assembly 9 is in contact with the counterweight plates 5. The driving assembly 10 is installed and limited on the inner circumference of the lower flame-retardant pipeline 7, and the bottom of the movable transmission assembly 9 extends into the top of the driving assembly 10. When the driving assembly 10 moves upward, a transmission structure is formed between the driving assembly 10 and the movable transmission assembly 9. When the high-temperature hot air passes through the lower flame-retardant pipeline 7 and the upper flame-retardant pipeline 1, the driving assembly 10 rotates and moves upward. When the driving assembly 10 moves upward, it drives the movable transmission assembly 9 and the counterweight plates 5 to rotate. When the counterweight plates 5 rotate, they act as a rotary compensator, thereby effectively improving the stability of the pipeline formed by the upper flame-retardant pipeline 1, the connecting cylinder 3, and the lower flame-retardant pipeline 7. When the counterweight plates 5 rotate, they guide the cold air outside the connecting cylinder 3 into the upper flame-retardant pipeline 1. The cold air is mixed with the high-temperature flue gas, greatly reducing the temperature inside the pipeline, thereby reducing the temperature change of the pipeline before and after the combustion equipment stops running, and avoiding the generation of gaps in the pipeline due to the relatively heavy thermal expansion and contraction effect.

[0039] As an implementation manner of the present invention, referring to Figure 9 , the end of the counterweight plate 5 is configured with an inclined surface 51, and the inclined surface 51 is located on the front side of the rotation direction of the counterweight plate 5. The counterweight plate 5 is made of a metal plate, the middle part is made of steel, and the other parts are made of stainless steel. The height value of the counterweight plate 5 is greater than the height value of the air inlet through groove 4. When the counterweight plate 5 rotates, the inclined surface 51 can be used to draw the outside air at the air inlet through groove 4 into the connecting cylinder 3, so that the temperature of the high-temperature flue gas can be rapidly reduced. After the combustion equipment stops running and the steel counterweight plate 5 slowly stops rotating, it coincides with the air inlet through groove 4, and the counterweight plate 5 blocks the air inlet through groove 4.

[0040] As an implementation manner of the present invention, referring to Figure 4 and Figure 5 , the movable transmission assembly 9 includes a separating shaft 91, a connecting frame 92 and a reinforcing ring 93. The top of the separating shaft 91 is rotatably installed with the inner bracket 8. The connecting frame 92 is limit installed on the outer periphery of the separating shaft 91. The reinforcing ring 93 is installed at the end of the connecting frame 92, and the bottom surface of the reinforcing ring 93 is attached and connected to the top of the counterweight plate 5. The bottom of the separating shaft 91 extends into the driving assembly 10, and a bottom ring 911 is installed at the bottom end of the separating shaft 91. A card slot 912 distributed in an annular array is constructed at the bottom of the bottom ring 911. The height of the separating shaft 91 is constant. When the driving assembly 10 rotates and moves upward, the separating shaft 91 reaching a certain rotational speed forms a connection structure with the driving assembly 10 and drives the counterweight plate 5 to gradually rotate through the rotation of the reinforcing ring 93.

[0041] As an implementation manner of the present invention, referring to Figure 5 , Figure 6 and Figure 7 , the driving assembly 10 includes a blade 101, a collar 102, a lifting shaft 103, a rotating cylinder 104, a support rod 105 and a limiting block 106. The blade 101 is arranged inside the connecting cylinder 3, and the ends of the blade 101 are inserted into the collar 102. The lifting shaft 103 penetrates through the collar 102. The rotating cylinder 104 is rotatably arranged on the outer periphery of the bottom of the lifting shaft 103. The support rod 105 is installed on the outer periphery of the rotating cylinder 104. The limiting block 106 is slidably arranged in the vertical groove 71, and the limiting block 106 is installed at the end of the support rod 105. When the discharged high-temperature flue gas passes through the blade 101, it drives the blade 101 and the collar 102 to rotate, and further drives the lifting shaft 103 and the rotating cylinder 104 to rotate together. In addition, under the push of the high-temperature flue gas pressure, the blade 101 drives the lifting shaft 103 to move upward along the chute 1041 inside the rotating cylinder 104, so as to realize power transmission between the lifting shaft 103 and the separating shaft 91.

[0042] As an implementation manner of the present invention, referring to Figure 8, a columnar groove 1031 is formed at the top of the lifting shaft 103. The bottom ring 911 is located in the columnar groove 1031. A plurality of trapezoidal blocks 1032 are fixed in the columnar groove 1031. A through rod 1033 is fixed to the bottom of the lifting shaft 103. A square block 1034 is fixed to the bottom of the through rod 1033. A chute 1041 is formed at the top of the rotating cylinder 104. The upper end of the chute 1041 is adapted to the through rod 1033, and the lower end of the chute 1041 is adapted to the square block 1034. Moreover, the height value of the part of the chute 1041 adapted to the square block 1034 is greater than the thickness value of the square block 1034. Under the cooperation of the trapezoidal block 1032 and the card slot 912, after the combustion device is started, the lifting shaft 103 moves upward, and the blades 101 and the collar 102 rotate to provide power for the counterweight plate 5. After the combustion device stops, the counterweight plate 5 continues to rotate under the action of inertia. Under the action of the trapezoidal block 1032 and the card slot 912, the inclined side of the trapezoidal block 1032 can cause the trapezoidal block 1032 to withdraw from the card slot 912, so that the lifting shaft 103 loses power transmission with the separation shaft 91, so that when starting next time, when the blades 101 and the collar 102 rotate to a certain speed, power input is provided for the counterweight plate 5 again.

[0043] As an embodiment of the present invention, refer to Figure 5 , a plurality of slots 1021 are formed on the outer periphery of the collar 102 and are distributed in an annular array. The number of the slots 1021 is the same as the number of the blades 101. Through the slots 1021, the blades 101 are conveniently installed on the outer periphery of the collar 102, and the blades 101 can be independently replaced after being damaged.

[0044] As an embodiment of the present invention, refer to Figure 9 , the outer periphery of the counterweight plate 5 is provided with an arc surface having the same curvature as the inner periphery of the connecting cylinder 3. The inclined surface 51 is arranged on the inner periphery of the counterweight plate 5. When the counterweight plate 5 rotates, it moves along the inner periphery of the connecting cylinder 3 in a fitting manner. When the counterweight plate 5 rotates, it has high stability, thereby further maintaining the stability among the upper flame retardant pipe 1, the connecting cylinder 3 and the lower flame retardant pipe 7.

[0045] Working principle: When the high-temperature flue gas generated after the combustion device is started is exhausted through the connecting pipe, the flue gas enters the pipe and drives the driving assembly 10 to rotate and move upward. The upward-moved driving assembly 10 drives the counterweight plate 5 to rotate through the movable transmission assembly 9. The rotating counterweight plate 5 functions as a rotary stabilizer. Moreover, the counterweight plate 5 cooperates with the air inlet through slot 4 to draw external air into the pipe to mix with the high-temperature flue gas to reduce the temperature in the pipe, reduce the temperature change of the pipe before and after the combustion device stops, and reduce the stress influence of the thermal expansion and contraction effect on the pipe connection part;

[0046] Specifically, after the upper flame-retardant pipe 1, the connecting cylinder 3, and the lower flame-retardant pipe 7 are connected to form a smoke exhaust pipe, a large amount of high-temperature flue gas is generated when the combustion equipment is started. When the high-temperature flue gas enters the connecting cylinder 3 at the connection between the upper flame-retardant pipe 1 and the lower flame-retardant pipe 7, the flue gas passing through drives the blades 101 and the collar 102 to rotate. Moreover, the high-temperature flue gas pushes up the lifting shaft 103 and the blades 101, causing the lifting shaft 103 and the blades 101 to move upward. When the lifting shaft 103 moves upward, the trapezoidal block 1032 moves upward accordingly, and through the cooperation of the through rod 1033, the square block 1034, and the chute 1041, the relative rotation between the lifting shaft 103 and the rotating cylinder 104 is prevented. During the rotation, the trapezoidal block 1032 slowly enters the card slot 912 during the process of fitting with the bottom ring 911. Thus, the lifting shaft 103 drives the separation shaft 91 to rotate, and further drives the connecting frame 92 and the reinforcing ring 93 to rotate. The counterweight plate 5 gradually rotates with the reinforcing ring 93, and the rotation speed of the counterweight plate 5 gradually increases, playing the role of a rotary compensator, thereby improving the stability between the upper flame-retardant pipe 1, the connecting cylinder 3, and the lower flame-retardant pipe 7. Moreover, under the action of the inclined surface 51 of the counterweight plate 5, when the counterweight plate 5 moves to be close to the air inlet through slot 4, the counterweight plate 5 "shovels" the cold air at the air inlet through slot 4 into the connecting cylinder 3. The cold air mixes with the high-temperature flue gas to rapidly reduce the temperature inside the pipe, thereby reducing the adverse effects caused by the thermal expansion and contraction of the pipe;

[0047] After the combustion equipment shuts down, the counterweight plate 5 continues to rotate under the action of inertia. The blades 101 lose the power input of the flue gas. At this time, the counterweight block provides power for the blades 101. The inclined side of the trapezoidal block 1032 causes the trapezoidal block 1032 to withdraw from the card slot 912. The lifting shaft 103, the through rod 1033, and the square block 1034 move downward together under their own gravity. The power transmission between the lifting shaft 103 and the separation shaft 91 is lost, ensuring that when starting next time, the blades 101 can rotate to a certain speed before driving the counterweight plate 5 to rotate.

[0048] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-temperature flame-retardant wiring pipe, comprising an upper flame-retardant pipe (1), a connecting flange (2), and a lower flame-retardant pipe (7). The two connecting flanges (2) are respectively installed at the ends of the upper flame-retardant pipe (1) and the lower flame-retardant pipe (7). A plurality of vertical grooves (71) are provided on the inner circumference of the lower flame-retardant pipe (7), and it is characterized in that: It further includes a connecting cylinder (3), an air inlet through groove (4), a counterweight plate (5), a positioning magnet block (6), an inner support (8), a movable transmission assembly (9) and a driving assembly (10). The connecting cylinder (3) is installed between two connecting flanges (2). The air inlet through grooves (4) are arranged in an annular array on the outer periphery of the connecting cylinder (3). The number of the counterweight plates (5) is the same as that of the air inlet through grooves (4), and the counterweight plates (5) are arranged in contact with the inner periphery of the connecting cylinder (3). The positioning magnet blocks (6) are embedded in the air inlet through grooves (4). The inner support (8) is installed on the inner top surface of the connecting cylinder (3). The movable transmission assembly (9) is installed and connected with the inner support (8), and the movable transmission assembly (9) is in contact with the counterweight plate (5). The driving assembly (10) is installed and limited on the inner periphery of the lower fireproof pipe (7). When high-temperature hot air passes through the lower fireproof pipe (7) and the upper fireproof pipe (1), the driving assembly (10) rotates and moves upward. When the driving assembly (10) moves upward, it drives the movable transmission assembly (9) and the counterweight plate (5) to rotate. When the counterweight plate (5) rotates, it guides the cold air outside the connecting cylinder (3) into the upper fireproof pipe (1).

2. The high-temperature flame-retardant wiring pipe according to claim 1, wherein: The end of the counterweight plate (5) is configured with an inclined surface (51), and the inclined surface (51) is located on the front side of the rotation direction of the counterweight plate (5).

3. The high-temperature flame-retardant wiring duct according to claim 2, characterized in that: The movable transmission assembly (9) includes a separation shaft (91), a connecting frame (92) and a reinforcing ring (93). The top of the separation shaft (91) is rotatably installed with the inner support (8). The connecting frame (92) is installed and limited on the outer periphery of the separation shaft (91). The reinforcing ring (93) is installed at the end of the connecting frame (92), and the bottom surface of the reinforcing ring (93) is in contact with the top of the counterweight plate (5).

4. The high-temperature flame-retardant wiring conduit according to claim 3, characterized in that: The bottom of the separation shaft (91) extends into the driving assembly (10), and a bottom ring (911) is installed at the bottom end of the separation shaft (91). The bottom of the bottom ring (911) is configured with card slots (912) distributed in an annular array.

5. A high-temperature flame-retardant wiring pipe according to claim 4, characterized in that: The driving assembly (10) includes blades (101), a collar (102), a lifting shaft (103), a rotating cylinder (104), a support rod (105) and a limiting block (106). The blades (101) are arranged inside the connecting cylinder (3), and the ends of the blades (101) are inserted into the collar (102). The lifting shaft (103) passes through the collar (102). The rotating cylinder (104) is rotatably arranged on the outer periphery of the bottom of the lifting shaft (103). The support rod (105) is installed on the outer periphery of the rotating cylinder (104). The limiting block (106) is slidably arranged in the vertical groove (71), and the limiting block (106) is installed at the end of the support rod (105).

6. The high-temperature flame-retardant wiring pipe according to claim 5, characterized in that: A columnar groove (1031) is formed at the top of the lifting shaft (103). The bottom ring (911) is located in the columnar groove (1031). A plurality of trapezoidal blocks (1032) are fixed in the columnar groove (1031). A through rod (1033) is fixed at the bottom of the lifting shaft (103), and a square block (1034) is fixed at the bottom of the through rod (1033).

7. The high-temperature flame-retardant wiring duct according to claim 6, characterized in that: A chute (1041) is constructed at the top of the rotating cylinder (104). The upper end of the chute (1041) is adapted to the through rod (1033), the lower end of the chute (1041) is adapted to the square block (1034), and the height value of the part of the chute (1041) adapted to the square block (1034) is greater than the thickness value of the square block (1034).

8. A high-temperature flame-retardant wiring duct according to claim 7, characterized in that: A plurality of slots (1021) distributed in an annular array are formed on the outer periphery of the collar (102), and the number of the slots (1021) is the same as the number of the blades (101).

9. A high-temperature flame-retardant wiring pipe according to claim 2, characterized in that: The counterweight plate (5) is made of a metal plate, and the height value of the counterweight plate (5) is greater than the height value of the air inlet through groove (4).

10. A high-temperature flame-retardant wiring pipe according to claim 9, characterized in that: The outer periphery of the counterweight plate (5) is arranged as an arc surface with the same curvature as the inner periphery of the connecting cylinder (3), and the inclined surface (51) is arranged on the inner periphery of the counterweight plate (5).

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