Wind heating device for winding RTP pipe

Abstract

The utility model discloses a wind heating device for winding an RTP pipe, and belongs to the technical field of pipeline machining equipment. The device comprises a spiral heating assembly, a wind gathering head and a temperature detection assembly, the spiral heating assembly comprises a pipe body used for heating airflow, and a spiral airflow channel is formed in the pipe body so that the heating efficiency can be improved; the air gathering head comprises a connecting sleeve and an air gathering cover, the two ends of the connecting sleeve are connected with the pipe body and the air gathering cover respectively, a plurality of air outlet holes are formed in the air gathering cover, and the output paths of the air outlet holes intersect in an area to be heated so that hot air can be gathered and kinetic energy of the hot air can be dispersed; and the temperature detection assembly is connected with the connecting sleeve, and the temperature detection assembly can measure the temperature of the to-be-heated area. According to the utility model, rotating air flow can be combed into stable linear air flow to avoid disturbance and tape winding, and the air flow can be gathered to avoid heat loss.

Description

Technical Field

[0001] This utility model relates to the field of pipe processing equipment technology, and in particular to a hot air device for RTP pipe winding. Background Technology

[0002] Reinforced thermoplastic pipe, or RTP for short, mostly adopts a three-layer structure: the inner layer is a thermoplastic pipe, the middle layer is a reinforcing layer, and the outer layer is a protective outer covering layer. RTP pipelines have been widely used in fields such as high-pressure natural gas transmission and submarine water transportation.

[0003] When the reinforcing layer is a strip winding layer, and the strip is wound and bonded to the plastic tube, the bonding area needs to be air-heated and plasticized to enhance the connection strength between the two. However, existing air-heating devices have low heating efficiency and cannot quickly generate sufficient heat energy. Utility Model Content

[0004] In view of this, it is necessary to provide a hot air device for RTP tube winding to solve the problem that existing hot air devices cannot effectively heat the bond between the strip and the plastic tube.

[0005] This utility model provides a hot air device for winding RTP pipes, used to heat the joint between the winding tape and the pipe, characterized in that it includes:

[0006] A spiral heating assembly, comprising a tube for heating airflow, wherein the tube has a spiral airflow channel inside to improve heating efficiency;

[0007] The air concentrator includes a connecting sleeve and an air concentrator cover. The two ends of the connecting sleeve are connected to the tube body and the air concentrator cover respectively. The air concentrator cover is provided with multiple air outlets. The output paths of the multiple air outlets intersect in a heating area to gather hot air and disperse the kinetic energy of the hot air.

[0008] A temperature sensing component is connected to the connecting sleeve, and the temperature sensing component is capable of measuring the temperature of the area to be heated.

[0009] Furthermore, the wind-gathering hood is recessed near the tube body to form an arc-shaped portion, and the air outlet is located on the arc-shaped portion.

[0010] Furthermore, the plurality of air outlets are arranged in a circular array along the center circumference of the arc-shaped portion, and the hot air output from the air outlets can be concentrated in the area to be heated.

[0011] Furthermore, the wind-gathering shroud is provided with a plurality of air guide tubes that are relatively far away from the tube body. The air guide tubes are arranged in a one-to-one correspondence with the air outlets, and the axial direction of the air guide tubes is consistent with the output path of the air outlets.

[0012] Furthermore, the temperature detection component includes a connecting bracket and a temperature sensor. One end of the connecting bracket is detachably connected to the connecting sleeve, and the other end of the connecting bracket is detachably connected to the temperature sensor.

[0013] Furthermore, one end of the connecting bracket is provided with a mounting groove that fits the connecting sleeve, and the other end of the connecting bracket is provided with multiple mounting holes, in which the temperature sensor is installed.

[0014] Furthermore, the temperature sensor is an infrared temperature sensor, and the detection end of the temperature sensor is positioned relative to the area to be heated.

[0015] Furthermore, the spiral heating assembly also includes spiral blades and a heating core that can generate heat. The tube is sleeved on the heating core. The inner side of the spiral blade is fixedly connected to the heating core, and the outer side of the spiral blade is fixedly connected to the tube. The airflow channel is formed between the spiral blade, the heating core, and the tube.

[0016] Furthermore, the inner wall of the tube is provided with a heating layer for heating the airflow.

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

[0018] (1) The present invention provides a wind-heating device for RTP tube winding, which is equipped with a spiral heating component. The spiral heating component includes a tube body, which can heat the airflow flowing through it. The tube body has a spiral airflow channel inside, which can cause the airflow to move in a spiral shape in the heating area, thereby increasing the contact time between the airflow and the heating element, improving the heating effect of the hot air, and increasing the heating efficiency. By increasing the contact time between the airflow and the heat source, the airflow can fully absorb heat energy, so that the airflow can heat up quickly.

[0019] (2) The present invention provides a wind-heating device for RTP tube winding, which is equipped with a concentrator head, including a connecting sleeve and a concentrator hood. The two ends of the connecting sleeve are connected to the tube body and the concentrator hood respectively. The heated airflow from the tube body can enter the concentrator hood. The concentrator hood is provided with multiple air outlets. The multiple air outlets can disperse the rotating airflow into multiple airflow segments. The rotating airflow is combed into linear direct current segments as it passes through the air outlets, which can avoid the turbulence of the airflow body disturbing the strip. The output paths of the multiple air outlets intersect at a heating area. The multiple linear direct current segments carry heat and converge at a heating area between the strip and the tube, which can fully heat the connection area, prevent heat loss, and improve the connection strength between the strip and the tube. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0021] Figure 1 is a schematic diagram of the overall structure of this utility model. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0023] Figure 3 This is an exploded view of the entire utility model;

[0024] Figure 4 This is a schematic diagram of the overall structure of the present invention. Figure 3 ;

[0025] Figure 5 yes Figure 4 A sectional view along the AA direction;

[0026] Figure 6 yes Figure 5 A sectional view along the BB direction;

[0027] Figure 7 This is a schematic diagram of the working function of the wind concentrator cover;

[0028] Figure 8 This is a schematic diagram of the utility model in use with a winding machine.

[0029] In the diagram, 100 is the spiral heating assembly; 110 is the tube body; 111 is the heating layer; 120 is the spiral blade; and 130 is the heating core.

[0030] 200. Air concentrator; 210. Connecting sleeve; 220. Air concentrator cover; 221. Air outlet; 222. Curved part; 223. Air guide tube;

[0031] 300. Temperature detection assembly; 310. Connecting bracket; 311. Mounting slot; 312. Mounting hole; 320. Temperature sensor;

[0032] 400. Wrapping machine. Detailed Implementation

[0033] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0034] This embodiment of an RTP pipe winding air-heating device relates to the field of pipe processing equipment technology. It utilizes a spiral airflow channel to extend the time the airflow spends through the pipe body 110, thereby improving the heating efficiency of the airflow. An air-concentrating hood 220 is installed at the airflow outlet, which can both organize the rotating airflow into a stable linear airflow, preventing disturbance and entanglement, and also concentrate the airflow to prevent heat loss.

[0035] Please see Figures 1 to 8 This embodiment of an RTP tube winding air-heating device includes: a spiral heating assembly 100, a concentrator 200, and a temperature detection assembly 300. The spiral heating assembly 100 includes a tube body 110, which can heat the airflow flowing through it. The tube body 110 has a spiral airflow channel inside, which can cause the airflow to move in a spiral shape within the heating area, thereby increasing the contact time between the airflow and the heating element, improving the heating effect of the hot air, and increasing the heating efficiency. By increasing the contact time between the airflow and the heat source, the airflow can fully absorb heat energy, allowing the airflow to heat up rapidly.

[0036] The air concentrator 200 includes a connecting sleeve 210 and an air concentrator hood 220. The two ends of the connecting sleeve 210 are connected to the tube body 110 and the air concentrator hood 220 respectively. The heated airflow from the tube body 110 can enter the air concentrator hood 220. The air concentrator hood 220 is provided with multiple air outlets 221. The multiple air outlets 221 can disperse the rotating airflow into multiple airflow sub-sections. The rotating airflow is combed into linear direct current sub-sections as it passes through the air outlets 221, which can avoid the turbulence of the airflow body disturbing the strip.

[0037] The output paths of multiple air outlets 221 intersect in a heating area. Multiple linear DC splits carry heat and converge in a heating area between the strip and the pipe, which can fully heat the connection area, prevent heat loss, and improve the connection strength between the strip and the pipe.

[0038] The temperature detection component 300 is connected to the connecting sleeve 210. The temperature detection component 300 can monitor the temperature of the area to be heated, ensuring that the connection temperature between the strip and the pipe is within a reasonable range.

[0039] In the specific implementation process, the tube body 110 is made of metal or heat-resistant ceramic. One end of the tube body 110 is connected to an air pump through a pipe. The air pump can output gas at a certain pressure into the pipe to provide the wind power for the area to be heated by the wind-heating system. By changing the internal structural shape of the tube body 110, a spiral airflow channel can be formed, and the airflow is fully heated when passing through the airflow channel. The concentrator head 200 is a thin-walled metal part formed by stamping. The two ends of the connecting sleeve 210 are welded or threaded to the tube body 110 and the concentrator head 220, respectively, making the three into a relatively complete whole. Multiple air outlets 221 are obtained on the concentrator head 220 by stamping or drilling. By controlling the direction of the air outlets 221, it can be ensured that the split airflows ejected from the air outlets 221 are converged into one area, realizing the concentration and convergence of heat and improving the heat utilization rate.

[0040] Specifically, during the heating process, an air pump inputs pressurized airflow into the pipe body 110. The pressurized airflow passes through a spiral airflow channel formed inside the pipe body 110, causing the airflow to be rapidly heated to the set temperature range. The airflow is divided into multiple separate airflows at the air concentrator 220. These separate airflows are ejected from different air outlets 221 and converge on the areas of the strip and pipe to be heated, heating the corresponding areas and ensuring a stable connection between the strip and pipe.

[0041] Compared to existing technologies, conventional air-heated devices typically use straight-through heating pipes, allowing pressurized airflow to pass through quickly. This results in insufficient heating of the airflow, leading to a lack of heat in the area to be heated and a weak connection between the strip and the pipe. In contrast to straight-through heating pipes, this design incorporates a spiral airflow channel within the pipe body 110. This extends the airflow's passage time, ensuring it is fully heated and reaches the set temperature range.

[0042] In some embodiments, please refer to Figure 5 and Figure 7 The air-concentrating shroud 220 is recessed near the tube body 110 to form an arc-shaped portion 222. The arc-shaped portion 222 is positioned directly opposite the main airflow and can disperse the main airflow from the center outwards. Air outlets 221 are provided on the arc-shaped portion 222, and the dispersed main airflow can be output from different air outlets 221 to form multiple linear direct current split airflows, eliminating internal turbulence of the main airflow and preventing airflow disturbance to the strip.

[0043] In practical implementation, the arc-shaped portion 222 can be an elliptical or hemispherical thin-walled metal sheet, with multiple air outlets 221 stamped onto it. These outlets 221 are arranged in a circular array around the center of the arc-shaped portion 222, converging axially towards the focal point at the front of the tube body 110. By adjusting the position of the tube body 110, the focal point is positioned within the heating area of ​​the strip and tube, ensuring a more concentrated and directional heating airflow, preventing waste of hot air before it enters the heating area, and further improving heating efficiency.

[0044] Specifically, the main airflow output from the tube 110 first contacts the bottom of the arc-shaped part 222. The main airflow spreads from the center to the surrounding area along the smooth curved surface of the arc-shaped part 222 into multiple different air outlet holes. The airflow guided by the air outlet holes 221 is divided into multiple linear direct current split airflows, eliminating the internal turbulence of the main airflow and avoiding airflow disturbance to the strip.

[0045] Compared to existing technologies, current airflow outlets often use a tapered, funnel-shaped opening. This opening automatically compresses the airflow, resulting in excessively high airflow velocity and increased impact force between the airflow and the strip. The combination of the curved section 222 and the air outlet can partially accelerate the airflow and also re-converge it, improving heat concentration.

[0046] In some embodiments, please refer to Figure 7 The air-concentrating hood 220 is equipped with multiple air guide tubes 223 positioned relatively far from the tube body 110. Each air guide tube 223 corresponds to an air outlet 221, and they are coaxially aligned. The end of the air guide tube 223 connects to the edge of the air outlet 221, and the axial direction of the air guide tube 223 is consistent with the output path of the air outlet 221. The air guide tubes 223 assist the hot air from the air outlet 221 in flowing along a predetermined path, preventing disordered airflow diffusion or deviation from the original path. Multiple streams of hot air can be precisely converged on the area to be heated, improving heating efficiency. The function of the air guide tubes 223 is to provide a smooth channel for airflow, reducing turbulence, resistance, or eddies that may occur during airflow propagation, allowing for more stable delivery of airflow to the heating area and ensuring the uniformity of hot air flow.

[0047] In practical implementation, the wind concentrator 220 is a sheet metal structure. Using stamping equipment, the wind concentrator 220 can be punched and flanged to form the corresponding air guide duct 223. The coaxiality of the air guide duct 223 and the air outlet 221 is higher, allowing for precise guidance and control of the airflow passing through the air outlet 221 and the air guide duct 223, resulting in higher convergence efficiency of multiple airflows. Alternatively, holes can be drilled in different directions on the wind concentrator 220, and then the air guide duct 223 can be welded onto the wind concentrator 220. The inner diameter of the air guide duct 223 is larger than the inner diameter of the air outlet 221. The airflow passing through the air outlet 221 and the air guide duct 223 can also be guided and controlled, resulting in even higher convergence efficiency of multiple airflows.

[0048] Specifically, the airflow that has been fully heated through the airflow channel enters the air-concentrating head 200. The airflow is affected by the air-concentrating shroud 220 and spreads outward from the center of the air-concentrating shroud 220 along the smooth surface of the air-concentrating shroud 220. The airflow is output from the air outlet and guided by the air guide tube 223, and sprayed out in relation to the area to be heated. This can concentrate the airflow in one place and eliminate turbulence.

[0049] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 8 The temperature detection component 300 includes a connecting bracket 310 and a temperature sensor 320. One end of the connecting bracket 310 is detachably connected to the connecting sleeve 210, and the other end of the connecting bracket 310 is detachably connected to the temperature sensor 320. The connecting sleeve 210, the connecting bracket 310, and the temperature sensor 320 can be connected and disassembled one by one, which makes it easy to install and disassemble the temperature detection component 300. During equipment maintenance and repair, it can greatly improve the maintenance convenience and service life of the equipment, and reduce downtime caused by damage or failure of the temperature detection component 300.

[0050] In practical implementation, one end of the connecting bracket 310 is provided with a mounting groove 311, and the connecting sleeve 210 is provided with a bayonet that matches the mounting groove 311. The mounting groove 311 is engaged in the bayonet, so that the connecting sleeve 210 and the connecting bracket are connected. The other end of the connecting bracket 310 is provided with multiple mounting holes 312. The temperature sensor 320 can be connected to the mounting holes 312 by bolts, thus connecting the connecting bracket 310 and the temperature sensor 320. The temperature sensor 320 is connected to the connecting sleeve 210 through the detachable connecting bracket 310, and the specific position of the sensor can be adjusted as needed. The detachable design of the temperature detection component 300 improves the modularity of the entire air-heating device, making the equipment easier to configure and customize.

[0051] Specifically, when temperature sensor 320 malfunctions, it can be directly removed and replaced. Simultaneously, by replacing or bending the connecting bracket 310, the relative position of temperature sensor 320 can be adjusted to ensure that it can detect the real-time temperature of the area to be heated, ensuring a suitable bonding temperature between the strip and the pipe, thus improving the quality of the finished pipe. Temperature sensor 320 is an infrared temperature sensor, which can detect the temperature of the area to be heated remotely without interfering with the temperature field of the measured object or the winding process of the strip relative to the pipe.

[0052] Compared to existing technologies, which often use fixed brackets to mount the temperature sensor 320, the temperature sensor 320 is prone to failure due to its long-term exposure to high vibration and high temperature environments. Furthermore, the disassembly, assembly, and angle adjustment of the temperature sensor 320 are difficult and inconvenient to use. In this solution, the connecting sleeve 210, connecting bracket 310, and temperature sensor 320 can be freely assembled and disassembled, offering high flexibility and strong practicality.

[0053] In some embodiments, please refer to Figure 5 The spiral heating assembly 100 also includes a spiral blade 120 and a heating core 130. A tube 110 is sleeved on the heating core 130. The inner side of the spiral blade 120 is fixedly connected to the heating core 130, and the outer side of the spiral blade 120 is fixedly connected to the tube 110. An airflow channel is formed between the spiral blade 120, the heating core 130, and the tube 110. The airflow flowing through the airflow channel contacts the heating core 130, the tube 110, and the spiral blade 120 respectively. The heating core 130 can deeply heat the airflow. The spiral blade 120 and the tube 110 can guide the airflow to rotate spirally, prolonging the contact time between the airflow and the heating core 130, and fully heating the airflow.

[0054] In specific implementation, the heating core 130 is an electric heating rod with an electric heating wire wound around it. The electric heating wire is usually made of nickel-chromium alloy or copper-nickel alloy, and it generates heat when current passes through it. The plate can be made of ceramic materials (such as alumina or aluminum silicate), which have excellent high-temperature resistance and can work for a long time at high temperatures without damage. The plate can also be made of metal, especially copper and aluminum, which have excellent thermal conductivity and can quickly transfer heat. The inner wall of the tube 110 is provided with a heating layer 111 for heating the airflow. The heating layer 111 is an electric heating wire wound in a spiral shape. The heating layer 111 works together with the heating core 130 to improve the heating efficiency of the airflow.

[0055] Specifically, the airflow spirals along the spiral blades 120 in the airflow channel. The heating core 130 and the heating layer 111 heat the airflow from the inside and outside, respectively. By extending the contact time between the airflow and the heating core 130, the contact area between the airflow and the electric heating wire is increased, thereby improving the heating efficiency of the airflow and achieving sufficient heating of the airflow, so that the airflow has sufficient thermal energy.

[0056] Compared to existing technologies, current heating equipment often uses oil baths or water baths to heat airflow, resulting in complex structures, high failure rates, and linear heating channels with low heating efficiency. The spiral airflow channel in this solution extends the heating time, promoting thorough heating of the airflow. The heating core 130 and heating layer 111, based on an electric heating wire, increase the contact area between the airflow and the heating wire, thereby improving the heating efficiency and ultimately achieving thorough heating of the airflow.

[0057] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the present utility model.

Claims

1. A hot air device for winding RTP pipe, used to heat the joint between the winding tape and the pipe, characterized in that, include: A spiral heating assembly, comprising a tube for heating airflow, wherein the tube has a spiral airflow channel inside to improve heating efficiency; The air concentrator includes a connecting sleeve and an air concentrator cover. The two ends of the connecting sleeve are connected to the tube body and the air concentrator cover respectively. The air concentrator cover is provided with multiple air outlets. The output paths of the multiple air outlets intersect in a heating area to gather hot air and disperse the kinetic energy of the hot air. A temperature sensing component is connected to the connecting sleeve, and the temperature sensing component is capable of measuring the temperature of the area to be heated.

2. The air-heated device for RTP tube winding according to claim 1, characterized in that, The air-gathering hood is recessed near the tube body to form an arc-shaped portion, and the air outlet is located on the arc-shaped portion.

3. The air-heated device for RTP tube winding according to claim 2, characterized in that, Multiple air outlets are arranged in a circular array along the center circumference of the arc-shaped portion, and the hot air output from the air outlets can be concentrated in the area to be heated.

4. The air-heated device for RTP tube winding according to claim 3, characterized in that, The wind-gathering shroud is provided with a plurality of air guide tubes that are relatively far away from the tube body. The air guide tubes are arranged one-to-one with the air outlets, and the axial direction of the air guide tubes is consistent with the output path of the air outlets.

5. A hot air device for RTP tube winding according to claim 1, characterized in that, The temperature detection assembly includes a connecting bracket and a temperature sensor. One end of the connecting bracket is detachably connected to the connecting sleeve, and the other end of the connecting bracket is detachably connected to the temperature sensor.

6. A hot air device for RTP tube winding according to claim 5, characterized in that, One end of the connecting bracket is provided with a mounting groove that fits the connecting sleeve, and the other end of the connecting bracket is provided with multiple mounting holes, in which the temperature sensor is installed.

7. A hot air device for RTP tube winding according to claim 6, characterized in that, The temperature sensor is an infrared temperature sensor, and the detection end of the temperature sensor is positioned relative to the area to be heated.

8. The air-heated device for RTP tube winding according to claim 1, characterized in that, The spiral heating assembly further includes spiral blades and a heating core that can generate heat. The tube is sleeved on the heating core. The inner side of the spiral blade is fixedly connected to the heating core, and the outer side of the spiral blade is fixedly connected to the tube. The airflow channel is formed between the spiral blade, the heating core, and the tube.

9. A hot air device for RTP tube winding according to claim 1, characterized in that, The inner wall of the tube is provided with a heating layer for heating the airflow.

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