A pipeline heating and insulation system for extremely low temperature environments and its application method

Abstract

This invention discloses a pipeline heating and insulation system and its usage method in extremely low temperature environments. The system includes a heating component, an internal insulation component, and an external waterproof component. By adopting an integrated structure that combines heating, insulation, and waterproofing, it not only achieves efficient control of pipe temperature and can more effectively cope with application environments with sudden temperature drops in polar regions, but also greatly improves the pipeline's resistance to water environments. During use, the waterproof component prevents external water from entering the device. Subsequently, the heating component generates heat by measuring and controlling the pipe wall temperature to maintain the pipe wall temperature within a safe range. Then, a low thermal conductivity nano-aerogel layer blocks internal heat transfer, greatly increasing the retention time of internal heat and thus improving the utilization rate of the heat generated by the heating component. In addition, by setting a heating wire winding tool, the uniformity of winding and construction efficiency are effectively improved, and the winding process is standardized.

Description

Technical Field

[0001] The embodiments of the present invention belong to the field of pipeline heating and insulation technology, and more specifically, relate to a pipeline heating and insulation system and its usage method in extremely low temperature environments. Background Technology

[0002] The Arctic region experiences extremely low temperatures. When ships surface for missions in the polar regions, their equipment and systems face significant temperature differences, being directly exposed from above-freezing water temperatures to -60°C or even lower. The cold causes pipes to contract, reducing the sealing performance of pipe connections and compromising proper sealing. Furthermore, excessively low system pipe temperatures can lead to internal media freezing, rendering the system inoperable. Therefore, developing a pipe antifreeze heating and insulation device to address the extreme temperature variations in polar environments is of great importance.

[0003] To address the aforementioned technical issues, current pipeline heating and insulation methods primarily include electric heating, steam heating, and hot water heating. Electric heating is widely used due to its high efficiency, energy saving, and simple structure. Furthermore, Chinese invention patent CN218410308U discloses a device for heating and insulating gas pipelines, comprising a special gas pipeline; a water-controlled thermostatic box is externally fitted to the special gas pipeline; an inlet pipe is fixed to the left side of the special gas pipeline; and an outlet pipe is fixed to the right side of the special gas pipeline. This device for heating and insulating gas pipelines features a special gas pipeline located inside a water-controlled thermostatic chamber. During use, the pipeline is immersed and encased in water within the chamber. The water conducts heat, ensuring uniform heating of the gas within the pipeline. The heating temperature of the pipeline can be precisely controlled by adjusting the temperature of the thermostatic chamber. Compared to heating pipelines with insulating foil and heating tape, this method ensures uniform heating of the gas before it enters the reaction through the outlet pipe. It avoids the problem of uneven heating caused by high heat at the contact point between the heating tape and the pipeline, and effectively reduces the risk of the pipeline failing to heat due to the heating tape detaching. Furthermore, Chinese invention patent CN217236066U discloses a pipeline heating and insulation device, including a disassembled stainless steel... The invention comprises a corrugated tube, on which a heating resistance wire is installed, and a temperature sensor is installed inside the transition shell. An insulation layer is fixedly installed on the outer wall of the corrugated tube. The heating resistance wire and the temperature sensor are electrically connected to a controller. In use, the heating temperature of the heating resistance wire is adjusted via a temperature control button, heating the nutrient solution or medication as it flows through the heating zone. The heated nutrient solution or medication then flows into the insulation zone for heat preservation before flowing out through the transition shell and being injected into the patient. During the outflow process, the temperature of the tube wall within the transition shell is measured, allowing medical personnel to clearly know the temperature of the outflowing nutrient solution or medication. This achieves the function of heating and preserving the infusion tube, feeding tube, nasoenteric tube, or nasogastric tube.

[0004] The above-mentioned patented technologies all combine heating and insulation to ensure the safety of pipelines and internal material conveying to a certain extent, but there are still the following technical problems or areas for improvement: (1) The design details of the insulation process are not disclosed in detail, which cannot guarantee excellent insulation effect. Therefore, the insulation components should be further optimized. (2) Under the premise of achieving pipeline temperature control, in order to ensure the safe execution of the ship's operation mission in the polar water environment, the waterproofness of the pipeline should also be considered. However, the above-mentioned patented technologies do not disclose this. (3) The application fields of the above-mentioned patented technologies are not extreme cold temperature drop scenarios. Therefore, it is necessary to set up multi-level treatment schemes for insulation and waterproof functions to ensure overall performance. Summary of the Invention

[0005] To address the aforementioned deficiencies or improvement needs of existing technologies, this invention provides a pipeline heating and insulation system and its application method in extremely low temperature environments. The system employs an integrated structure combining heating, insulation, and waterproofing, achieving not only efficient pipe temperature control and more effective handling of extreme temperature drops in polar environments, but also significantly improving the pipeline's resistance to aquatic environments. During use, the waterproof component prevents external water from entering the device. Subsequently, the heating component generates heat by monitoring and controlling the pipe wall temperature, maintaining it within a safe range. A low thermal conductivity nano-aerogel layer then blocks internal heat transfer, greatly increasing the retention time of internal heat and thus improving the utilization rate of the heat generated by the heating component.

[0006] To achieve the above objectives, according to a first aspect of the present invention, the system includes:

[0007] A heating component that is closely attached to and covers the surface of the heated pipe; an internal heat insulation component that covers the outer surface of the heating component to prevent the exchange of heat between the inside and outside; and an external waterproof component that covers the outer surface of the internal heat insulation component to prevent external water from entering.

[0008] The heating assembly includes a pipe temperature sensor in close contact with the pipe being heated, a temperature controller connected to the output end of the pipe temperature sensor, and a heating actuator connected to the output end of the temperature controller for generating heat; the heating actuator is an electric heating wire.

[0009] The internal thermal insulation component includes a nano-aerogel layer as the main structure;

[0010] The external waterproofing component includes a waterproof resin layer as the main structure.

[0011] Preferably, the pipeline heating and insulation system in an extremely low temperature environment further includes a uniform winding unit for uniformly winding electric heating wire onto the pipeline surface.

[0012] The uniform winding unit includes a traveling unit that drives the entire unit to travel along the surface of the pipeline, and a turnover wire output unit located at the front end of the traveling unit for winding and releasing wire along the surface of the pipeline.

[0013] Preferably, the walking unit includes:

[0014] A first lower annular shell, a first upper annular shell, a first rotating connection part and a first opening and closing assembly end for rotatably opening and closing the first lower annular shell and the first upper annular shell, a walking drive assembly disposed on the inner sidewall of the first lower annular shell and the first upper annular shell; and a pipeline located between the first lower annular shell and the first upper annular shell.

[0015] The walking drive assembly includes a walking transmission mechanism for transmitting kinetic energy and a pipe diameter adaptation mechanism for adapting to the pipe diameter size.

[0016] The walking transmission mechanism includes a bearing block that is radially oriented on the inner surfaces of the first lower annular shell and the first upper annular shell, a wheel groove located at the front end of the bearing block, a friction walking wheel rotatably connected to the wheel groove via a transmission shaft, a first transmission pulley fixedly connected to the transmission shaft on the same axis, a second transmission pulley that drives the first transmission pulley to rotate via a transmission belt, and a drive motor.

[0017] Preferably, the pipe diameter adaptation mechanism includes:

[0018] A radial groove is formed on the inner surface of the first lower annular shell and the first upper annular shell and slidably connected to the bearing block; a first pushing spring is provided between the bottom of the bearing block and the bottom surface of the bearing block; a limiting slot is formed on the bearing block; and a limiting slide rod is fixedly connected to the first lower annular shell and the first upper annular shell and is laterally inserted into the limiting slot.

[0019] Preferably, the turnover line unit includes:

[0020] A second lower annular shell, a second upper annular shell, a second rotating connection part for rotatably opening and closing the second lower annular shell and the second upper annular shell, an annular cavity opened inside the second lower annular shell and the second upper annular shell, an annular groove on the surface of the annular cavity with a window along the front side of the second lower annular shell and the second upper annular shell, alternating magnetic poles arranged at equal intervals on the side wall of the annular cavity, and a rotating wire feeding assembly that maintains a sliding connection in the annular cavity and rotates in a controlled direction under the action of the alternating magnetic poles; the rotating wire feeding assembly has magnetic poles on its side that attract each other to the alternating magnetic poles.

[0021] Preferably, the rotating thread-feeding assembly includes:

[0022] The system comprises: a ring-shaped shuttle base slidably connected within the annular cavity; an intermediate connecting block fixedly connected to the outer surface of the ring-shaped shuttle base and extending through the annular groove on its surface; a wheel chamber fixedly connected to the protruding end of the intermediate connecting block; a rotating hub rotatably connected inside the wheel chamber and wound with heating wire; and a friction speed limiting component located near the rotating shaft of the rotating hub to prevent the rotating hub from rotating due to inertia. A discharge head is provided at the front end of the wheel chamber.

[0023] The friction speed limiting component includes a groove opened in the wheel compartment facing the rotation axis of the rotating hub, a rubber slide rod slidably connected along the groove, and a second push spring disposed at the rear end of the rubber slide rod and used to press the rubber slide rod tightly against the rotation axis of the rotating hub.

[0024] The side of the circular shuttle base is provided with magnetic poles.

[0025] Preferably, the internal thermal insulation component further includes:

[0026] A stainless steel foil is used to reflect and retain the heat generated by the heating element to the heated pipeline, the stainless steel foil being attached to the surface of the heating element.

[0027] Preferably, the external waterproofing component further includes:

[0028] A stainless steel plate for secondary waterproofing is attached to the surface of the nano-aerogel layer.

[0029] Preferably, the pipe temperature sensor includes: a thermistor for sensing temperature changes and a signal conditioning circuit for converting and conditioning the temperature signal into an electrical signal.

[0030] The pipe temperature sensor includes a thermochromic material attached to the surface of the heated pipe for converting temperature changes into deformation changes, a flexible strain gauge disposed on the surface of the thermochromic material, and a signal conditioning circuit connected to the output end of the flexible strain gauge.

[0031] According to a second aspect of the present invention, a method of using a pipeline heating and insulation system in an extremely low temperature environment includes the following steps:

[0032] S100: First, open the lower annular shell and the upper annular shell through the opening and closing assembly end, install the device clamp on the pipeline surface, and then lock the opening and closing assembly end.

[0033] S200: Start-up system. Under the action of the walking unit, the whole device will move along the pipeline direction. At the same time, the alternating magnetic poles in the turnover line unit control the alternating magnetic field to generate opposite magnetic fields, thereby attracting the magnetic poles on the surface of the loop shuttle base, which in turn causes the loop shuttle base to move in a directional and constant speed, thereby driving the rotating line feeding assembly to rotate along the pipeline axis. Under the drag of the heating wire, it will be pulled out from the wheel chamber and evenly wound on the pipeline surface.

[0034] S300: After the winding is completed, remove the entire device from the pipeline to complete the winding operation.

[0035] In summary, compared with the prior art, the above-described technical solutions conceived by this invention can achieve the following beneficial effects:

[0036] (1) The pipeline heating and insulation system of the present invention adopts an integrated structure of heating, insulation and waterproofing, which not only realizes efficient control of pipeline temperature and can more effectively cope with the application environment of sudden temperature drop in polar regions, but also greatly improves the pipeline's resistance to water environment. During use, the waterproof component prevents the external water environment from entering the device. Subsequently, the heating component generates heat by measuring and controlling the pipe wall temperature to maintain the pipe wall temperature within a safe range. Then, the low thermal conductivity nano aerogel layer blocks the internal heat transfer, greatly improving the internal heat retention time, thereby improving the utilization rate of the heat generated by the heating component.

[0037] (2) The present invention provides a pipeline heating and insulation system in an extremely low temperature environment. By setting a heating wire winding tool, the heating wire on the pipeline surface is assisted in winding, thereby effectively improving the uniformity of winding and construction efficiency, and pushing the winding process towards standardization of operation. In the process of use, the lower annular shell and the upper annular shell are opened by opening and closing the assembly end, and the device is clamped and installed on the pipeline surface. Then the opening and closing assembly end is locked. Next, the system is started. Under the action of the walking unit, the whole device will move along the pipeline direction. At the same time, the alternating magnetic poles in the turnover wire output unit are controlled to generate a reverse magnetic field, thereby attracting the magnetic poles on the surface of the loop shuttle base, thereby causing the loop shuttle base to move in a directional and constant speed, thereby driving the rotating wire output assembly to rotate along the pipeline axis, and under the drag of the heating wire, it will be pulled out from the wheel chamber, thereby evenly winding on the pipeline surface.

[0038] (3) The pipeline heating and insulation system of the present invention in an extremely low temperature environment has the following advantages: In terms of heat insulation, by attaching stainless steel foil to the surface of the heating component, the heat generated by the heating component can be reflected, which further slows down the diffusion of heat outward, thereby playing a secondary heat insulation role; In addition, in terms of waterproofing, a secondary stainless steel plate waterproof component is added on the basis of the nano aerogel layer, which not only greatly improves the waterproofing effect, but also improves the strength of the device and strengthens the overall system safety.

[0039] (4) In this embodiment of the invention, by adopting an integrated structure that combines heating, insulation and waterproofing, not only is efficient control of pipe temperature achieved, but it can also more effectively cope with the application environment of sudden temperature drop in polar regions, and greatly improve the pipeline's resistance to water environment. During use, the waterproof component prevents external water environment from entering the device. Subsequently, the heating component generates heat by measuring and controlling the pipe wall temperature, maintaining the pipe wall temperature within a safe range. Then, the low thermal conductivity nano-aerogel layer blocks the internal heat transfer, greatly improving the internal heat retention time, thereby improving the utilization rate of the heat generated by the heating component. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the overall structure of a pipeline heating and insulation system for extremely low temperature environments.

[0041] Figure 2 This is a schematic diagram of the pipe temperature sensor structure in a pipeline heating and insulation system for extremely low temperature environments.

[0042] Figure 3 This is a schematic diagram of the uniform wire winding unit in use in a pipeline heating and insulation system under extremely low temperature conditions.

[0043] Figure 4 This is a schematic diagram of the overall structure of the traveling unit of a pipeline heating and insulation system in an extremely low temperature environment;

[0044] Figure 5 This is a partial structural diagram of the traveling unit of a pipeline heating and insulation system in an extremely low temperature environment.

[0045] Figure 6 This is a schematic diagram of the turnover outlet unit structure of a pipeline heating and insulation system in an extremely low temperature environment.

[0046] Figure 7 This is a schematic diagram of the rotating feeder assembly structure of a pipeline heating and insulation system in an extremely low temperature environment.

[0047] Figure 8 This is a flowchart illustrating the usage of a pipeline heating and insulation system in extremely low temperature environments.

[0048] The names corresponding to the drawing numbers in the figure are as follows: 1-Electric heating wire, 2-Heated pipe, 3-Stainless steel plate, 4-Waterproof resin layer, 5-Nano aerogel layer, 6-Stainless steel foil, 7-Uniform winding unit, 710-Walking unit, 711-First lower annular shell, 712-First upper annular shell, 713-First rotating connection part, 714-First opening and closing assembly end, 7140-Bolt group, 715-Walking drive assembly, 7151-Walking transmission mechanism, 71511-Bearing block, 71512-Wheel groove, 71513-Friction walking wheel, 71514-First transmission pulley, 71515-Second transmission pulley, 71516-Transmission belt, 7151... 7-Drive motor, 7152-Pipe diameter adaptation mechanism, 71521-Radial groove, 71522-Limiting slot, 71523-Limiting slide bar, 71524-First push spring, 720-Turnover wire output unit, 721-Second lower annular shell, 722-Second upper annular shell, 723-Second rotating connection part, 724-Surface annular groove, 725-Annular cavity, 726-Alternating magnetic poles, 727-Rotating wire output assembly, 7271-Annular shuttle base, 7272-Intermediate connecting block, 7273-Wheel compartment, 7274-Rotating hub, 7275-Second push spring, 7276-Rubber slide bar, 7277-Groove, 7278-Outlet head. Detailed Implementation

[0049] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., 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 the present invention and simplifying the description, and are not intended to 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 limiting the present invention.

[0050] 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 invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0051] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0052] To make the objectives, technical solutions, and advantages of this invention clearer, the invention 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 and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0053] like Figures 1-2 As shown in this embodiment of the invention, the pipeline heating and insulation system for extremely low temperature environments includes:

[0054] A heating component that is closely attached to and covers the surface of the heated pipe 2; an internal heat insulation component that covers the outer surface of the heating component to prevent the exchange of heat between the inside and outside; and an external waterproof component that covers the outer surface of the internal heat insulation component to prevent external water from entering.

[0055] The heating assembly includes a pipe temperature sensor that is in close contact with the pipe being heated 2, a temperature controller connected to the output end of the pipe temperature sensor, and a heating actuator connected to the output end of the temperature controller for generating heat.

[0056] The internal heat insulation component includes a nano-aerogel layer 5 as the main structure;

[0057] The external waterproofing component includes a waterproof resin layer 4 as the main structure.

[0058] In this embodiment of the invention, the heating actuator is an electric heating wire.

[0059] like Figures 3-7 As shown, in this embodiment of the invention, the pipeline heating and insulation system under extremely low temperature environment further includes a uniform winding unit 7 for uniformly winding electric heating wire onto the pipeline surface.

[0060] The uniform winding unit 7 includes a walking unit 710 that drives the entire unit to walk along the surface of the pipeline, and a turnover wire output unit 720 located at the front end of the walking unit 710 for winding and releasing wire along the surface of the pipeline.

[0061] like Figure 4 , Figure 5 As shown, in this embodiment of the invention, the walking unit 710 includes:

[0062] A first lower annular shell 711, a first upper annular shell 712, a first rotating connection part 713 and a first opening and closing assembly end 714 for rotatably opening and closing the first lower annular shell 711 and the first upper annular shell 712, and a walking drive assembly 715 disposed on the inner sidewall of the first lower annular shell 711 and the first upper annular shell 712; and a pipeline located between the first lower annular shell 711 and the first upper annular shell 712.

[0063] The walking drive assembly 715 includes a walking transmission mechanism 7151 for transmitting kinetic energy and a pipe diameter adaptation mechanism 7152 for adapting to the pipe diameter size.

[0064] The walking transmission mechanism 7151 includes a bearing block 71511 that is radially oriented on the inner surfaces of the first lower annular shell 711 and the first upper annular shell 712, a wheel groove 71512 at the front end of the bearing block 71511, a friction walking wheel 71513 that is rotatably connected to the wheel groove 71512 via a transmission shaft, a first transmission pulley 71514 that is coaxially and fixedly connected to the transmission shaft, a second transmission pulley 71515 that drives the first transmission pulley 71514 to rotate via a transmission belt 71516, and a drive motor 71517.

[0065] like Figures 3-5 As shown, in this embodiment of the invention, the pipe diameter adaptation mechanism 7152 includes:

[0066] A radial groove 71521 is formed on the inner surface of the first lower annular shell 711 and the first upper annular shell 712 and is slidably connected to the support block 71511; a first push spring 71524 is provided between the bottom of the support block 71511 and the bottom surface of the support block 71511; a limiting slot 71522 is formed on the support block 71511; and a limiting slide rod 71523 is fixedly connected to the first lower annular shell 711 and the first upper annular shell 712 and is laterally inserted into the limiting slot 71522.

[0067] like Figure 6 , Figure 7 As shown, in this embodiment of the invention, the turnover line unit 720 includes:

[0068] A second lower annular shell 721, a second upper annular shell 722, a second rotating connection part 723 for rotatably opening and closing the second lower annular shell 721 and the second upper annular shell 722, an annular cavity 725 opened inside the second lower annular shell 721 and the second upper annular shell 722, an annular groove 724 opening a window in the annular cavity 725 along the front side of the second lower annular shell 721 and the second upper annular shell 722, alternating magnetic poles 726 arranged at equal intervals on the side wall of the annular cavity 725, and a rotating wire feeding assembly 727 that maintains a sliding connection in the annular cavity 725 and rotates in a controlled direction under the action of the alternating magnetic poles 726; the rotating wire feeding assembly 727 has magnetic poles on its side that attract each other to the alternating magnetic poles 726.

[0069] like Figure 7 As shown, in this embodiment of the invention, the rotating thread-feeding assembly 727 includes:

[0070] The annular shuttle base 7271 is slidably connected within the annular cavity 725; an intermediate connecting block 7272 is fixedly connected to the outer side of the annular shuttle base 7271 and extends through the annular groove 724 on the surface; a wheel chamber 7273 is fixedly connected to the protruding end of the intermediate connecting block 7272; a rotating hub 7274 is rotatably connected inside the wheel chamber 7273 and wound with heating wire; and a friction speed limiting component is provided near the rotating shaft of the rotating hub 7274 to prevent the rotating hub 7274 from rotating inertially; a discharge head 7278 is provided at the front end of the wheel chamber 7273.

[0071] The friction speed limiting assembly includes a groove 7277 opened in the wheel compartment 7273 in the direction of the rotation axis of the rotating hub 7274, a rubber slide rod 7276 slidably connected along the groove 7277, and a second push spring 7275 disposed at the rear end of the rubber slide rod 7276 and used to tightly press the rubber slide rod 7276 against the rotation axis of the rotating hub 7274.

[0072] The circular shuttle base 7271 is provided with magnetic poles on its side.

[0073] In this embodiment of the invention, by adopting an integrated structure that combines heating, insulation, and waterproofing, not only is efficient control of pipe temperature achieved, enabling more effective response to application environments with sudden temperature drops in polar regions, but the pipeline's resistance to water environments is also greatly improved. During use, the waterproof component prevents external water from entering the device. Subsequently, the heating component generates heat by measuring and controlling the pipe wall temperature, maintaining the pipe wall temperature within a safe range. Then, the low thermal conductivity nano-aerogel layer 5 blocks the internal heat transfer, greatly improving the retention time of internal heat and thus increasing the utilization rate of the heat generated by the heating component.

[0074] Furthermore, in this embodiment of the invention, by setting a heating wire winding tool to assist in the winding of the heating wire on the surface of the pipeline, the uniformity of the winding and the construction efficiency are effectively improved, and the winding process is standardized. In the process of use, the lower annular shell and the upper annular shell are first opened by opening and closing the assembly end, and the device is clamped and installed on the surface of the pipeline. Then the opening and closing assembly end is locked. Next, the system is started. Under the action of the walking unit 710, the whole device will move along the pipeline direction. At the same time, the alternating magnetic poles 726 in the turnover wire output unit 720 control the alternating magnetic field 726 to generate opposite magnetic fields, thereby attracting the magnetic poles on the surface of the loop shuttle base 7271, thereby causing the loop shuttle base to move in a directional and constant speed, thereby driving the rotating wire output assembly 727 to rotate along the pipeline axis, and under the drag of the heating wire, it will be pulled out from the wheel chamber, thereby being evenly wound on the surface of the pipeline.

[0075] like Figure 1 As shown, in this embodiment of the invention, the internal heat insulation component further includes:

[0076] A stainless steel foil 6 is used to reflect and retain the heat generated by the heating component to the heated pipe 2, and the stainless steel foil 6 is attached to the surface of the heating component.

[0077] like Figure 1 As shown, in this embodiment of the invention, the external waterproofing component further includes:

[0078] A stainless steel plate 3 for secondary waterproofing is attached to the surface of the nano-aerogel layer 5.

[0079] In this embodiment of the invention, in terms of heat insulation, by attaching stainless steel foil 6 to the surface of the heating component, the heat generated by the heating component can be reflected, further slowing down the outward diffusion of heat, thereby playing a secondary heat insulation role; in addition, in terms of waterproofing, a secondary stainless steel plate 3 waterproof component is added on the basis of the nano aerogel layer 5, which not only greatly improves the waterproofing effect, but also improves the strength of the device, and strengthens the overall system safety.

[0080] In this embodiment of the invention, the heating actuator is an electric heating belt.

[0081] In this embodiment of the invention, the pipe temperature sensor includes: a thermistor for sensing temperature changes and a signal conditioning circuit for converting and conditioning the temperature signal into an electrical signal.

[0082] In this embodiment of the invention, the pipe temperature sensor includes:

[0083] A thermochromic material is attached to the surface of the heated pipe 2 to convert temperature changes into deformation changes; a flexible strain gauge is disposed on the surface of the thermochromic material; and a signal conditioning circuit is connected to the output end of the flexible strain gauge.

[0084] like Figure 8 As shown, in another embodiment of the present invention, a method for using a pipeline heating and insulation system in an extremely low temperature environment includes the following steps:

[0085] S100: First, open the lower annular shell and the upper annular shell through the opening and closing assembly end, install the device clamp on the pipeline surface, and then lock the opening and closing assembly end.

[0086] S200: Start the system. Under the action of the walking unit 710, the whole device will move along the pipeline direction. At the same time, the alternating magnetic poles 726 in the turnover line output unit 720 control the alternating magnetic field to generate opposite magnetic fields, thereby attracting the magnetic poles on the surface of the loop shuttle base 7271, which in turn causes the loop shuttle base to move in a directional and constant speed, thereby driving the rotating line output assembly 727 to rotate along the pipeline axis. Under the drag of the heating wire, it will be pulled out from the wheel chamber and evenly wound on the pipeline surface.

[0087] S300: After the winding is completed, remove the entire device from the pipeline to complete the winding operation.

[0088] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A pipeline heating and insulation system for extremely low temperature environments, characterized in that, include: Heating component tightly attached to the surface of the heated pipe (2), internal heat insulation component covering the outer surface of the heating component to block the exchange of heat between the inside and outside, external waterproof component covering the outer surface of the internal heat insulation component to block the entry of external water flow, and uniform wire winding unit (7). The heating assembly includes a pipe temperature sensor in close contact with the pipe being heated (2), a temperature controller connected to the output end of the pipe temperature sensor, and a heating actuator connected to the output end of the temperature controller for generating heat; the heating actuator is an electric heating wire. The internal thermal insulation component includes a nano-aerogel layer (5) as the main structure. The external waterproofing component includes a waterproof resin layer (4) as the main structure. The uniform winding unit (7) is used to uniformly wind the electric heating wire onto the surface of the pipeline, including a walking unit (710) that drives the whole unit to walk along the surface of the pipeline, and a turnover wire output unit (720) located at the front end of the walking unit (710) for winding and releasing wire along the surface of the pipeline. The turnover line unit (720) includes: a second lower annular shell (721), a second upper annular shell (722), a second rotating connection part (723) for rotatably opening and closing the second lower annular shell (721) and the second upper annular shell (722), an annular cavity (725) opened inside the second lower annular shell (721) and the second upper annular shell (722), a surface annular groove (724) opening a window to the annular cavity (725) along the front side of the second lower annular shell (721) and the second upper annular shell (722), alternating magnetic poles (726) arranged at equal intervals on the side wall of the annular cavity (725), and a rotating line feeding assembly (727) that maintains a sliding connection in the annular cavity (725) and rotates in a controlled direction under the action of the alternating magnetic poles (726); the rotating line feeding assembly (727) has magnetic poles on its side that attract each other to the alternating magnetic poles (726).

2. The pipeline heating and insulation system under extremely low temperature conditions according to claim 1, characterized in that, The walking unit (710) includes: A first lower annular shell (711), a first upper annular shell (712), a first rotating connection part (713) and a first opening and closing assembly end (714) for rotatably opening and closing the first lower annular shell (711) and the first upper annular shell (712), and a walking drive assembly (715) disposed on the inner sidewall of the first lower annular shell (711) and the first upper annular shell (712); the pipeline is located between the first lower annular shell (711) and the first upper annular shell (712); The walking drive assembly (715) includes a walking transmission mechanism (7151) for transmitting kinetic energy and a pipe diameter adaptation mechanism (7152) for adapting to the pipe diameter size. The walking transmission mechanism (7151) includes a bearing block (71511) that is radially oriented to the inner surfaces of the first lower annular shell (711) and the first upper annular shell (712), a wheel groove (71512) at the front end of the bearing block (71511), a friction walking wheel (71513) that is rotatably connected to the wheel groove (71512) via a transmission shaft, a first transmission pulley (71514) that is coaxially fixedly connected to the transmission shaft, a second transmission pulley (71515) that drives the first transmission pulley (71514) to rotate via a transmission belt (71516), and a drive motor (71517).

3. The pipeline heating and insulation system under extremely low temperature conditions according to claim 2, characterized in that, The pipe diameter adaptation mechanism (7152) includes: A radial groove (71521) is provided on the inner surface of the first lower annular shell (711) and the first upper annular shell (712) and is slidably connected to the bearing block (71511); a first push spring (71524) is provided between the bottom of the bearing block (71511) and the bottom surface of the bearing block (71511); a limiting slot (71522) is provided on the bearing block (71511); and a limiting slide rod (71523) is fixedly connected to the first lower annular shell (711) and the first upper annular shell (712) and is laterally inserted into the limiting slot (71522).

4. A pipeline heating and insulation system for extremely low temperature environments according to claim 3, characterized in that, The rotating thread-ejecting assembly (727) includes: The annular shuttle base (7271) is slidably connected to the annular cavity (725); the intermediate connecting block (7272) is fixedly connected to the outer side of the annular shuttle base (7271) and extends through the annular groove (724) on the surface; the wheel chamber (7273) is fixedly connected to the protruding end of the intermediate connecting block (7272); the rotating hub (7274) is rotatably connected to the inside of the wheel chamber (7273) and wound with heating wire; and a friction speed limiting component is provided near the rotating shaft of the rotating hub (7274) to prevent the rotating hub (7274) from rotating due to inertia; the front end of the wheel chamber (7273) is provided with a discharge head (7278). The friction speed limiting assembly includes a groove (7277) opened in the wheel compartment (7273) facing the rotation axis of the rotating hub (7274), a rubber slide rod (7276) slidably connected along the groove (7277), and a second push spring (7275) provided at the rear end of the rubber slide rod (7276) and used to press the rubber slide rod (7276) tightly against the rotation axis of the rotating hub (7274). The circular shuttle base (7271) is provided with magnetic poles on its side.

5. A pipeline heating and insulation system for extremely low temperature environments according to claim 1, characterized in that, The internal insulation component also includes: Stainless steel foil (6) is used to reflect and retain the heat generated by the heating component to the heated pipe (2), and the stainless steel foil (6) is attached to the surface of the heating component.

6. A pipeline heating and insulation system for extremely low temperature environments according to claim 1, characterized in that, The external waterproofing component also includes: A stainless steel plate (3) for secondary waterproofing is attached to the surface of the nano-aerogel layer (5).

7. A pipeline heating and insulation system for extremely low temperature environments according to claim 1, characterized in that, The pipe temperature sensor includes: a thermistor for sensing temperature changes and a signal conditioning circuit for converting and conditioning the temperature signal into an electrical signal. The pipe temperature sensor includes a thermochromic material attached to the surface of the heated pipe (2) for converting temperature changes into deformation changes, a flexible strain gauge disposed on the surface of the thermochromic material, and a signal conditioning circuit connected to the output end of the flexible strain gauge.

8. A method of using a pipeline heating and insulation system in an extremely low temperature environment, applied to the pipeline heating and insulation system in an extremely low temperature environment as described in claim 4, characterized in that, Includes the following steps: S100: First, open the first lower annular shell, the second lower annular shell, the first upper annular shell, and the second upper annular shell through the opening and closing assembly end, install the device clamp on the pipeline surface, and then lock the opening and closing assembly end. S200: Start the system. Under the action of the walking unit (710), the whole device will move along the pipeline direction. At the same time, the alternating magnetic poles (726) in the turnover line output unit (720) alternately generate opposite magnetic fields, thereby attracting the magnetic poles on the surface of the loop shuttle base (7271), which in turn causes the loop shuttle base to move in a directional and constant speed, thereby driving the rotating line output assembly (727) to rotate along the pipeline axis. Under the drag of the heating wire, it will be pulled out from the wheel chamber and evenly wound on the pipeline surface. S300: After the winding is completed, remove the entire device from the pipeline to complete the winding operation.

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