Pipeline heating and heat preservation system under extremely low temperature environment and using method thereof

Abstract

The invention discloses a pipeline heating and heat preservation system in an extremely low temperature environment and a using method thereof. The system comprises a heating assembly, an internal heat insulation assembly and an external waterproof assembly. By means of the heating, heat preservation and waterproof integrated structure, efficient control over the pipe temperature is achieved, the application working condition environment where the polar region temperature suddenly drops can be dealt with more effectively, and the water environment resisting capacity of the pipeline is greatly improved; in the using process, the waterproof assembly prevents an external water environment from entering the device; afterwards, the heating assembly generates heat by measuring and controlling the temperature of the pipe wall, the temperature of the pipe wall is kept within a safe range, internal heat transfer is blocked through the nano aerogel layer with low thermal conductivity, the internal heat retention time is greatly prolonged, and therefore the utilization rate of the heat generated by the heating assembly is increased; by arranging the heating wire winding tool, the winding uniformity and the construction efficiency are effectively improved, and the winding procedure is pushed to the operation standardization.

Description

Technical Field

[0001] The embodiments of the present invention belong to the technical field of pipeline heating and heat preservation, and more specifically, to a pipeline heating and heat preservation system in an extremely low temperature environment and a method of using the same. Background Art

[0002] The Arctic region has extremely low temperatures. After a ship surfaces while performing a mission in the polar region, the equipment and system pipelines will face a huge temperature difference, directly exposed to a temperature environment of -60°C or even lower from a water temperature of above zero. The pipeline shrinks due to the cold, resulting in a decrease in the sealing performance of the pipeline connection parts, which makes it impossible to ensure the normal sealing effect. If the system pipeline temperature is too low, the internal medium may freeze and the system may not work properly. Therefore, it is of great significance to propose a pipeline antifreeze heating and insulation device to cope with the large temperature change environment in the polar region.

[0003] In order to solve the above technical problems, the current pipeline heating and insulation methods mainly include electric heating, steam heating, and hot water heating. Electric heating is widely used due to its high efficiency, energy saving, and simple structure. In addition, Chinese invention patent CN218410308U discloses a device for heating and insulation of gas pipelines, including a special gas pipeline; the outside of the special gas pipeline is equipped with a water-controlled thermostatic box, the left side of the special gas pipeline is fixed with an air inlet pipe, and the right side of the special gas pipeline is fixed with an air outlet pipe. The device for heating and heat preservation of gas pipelines has a special gas pipeline which is located inside a water-controlled thermostatic box. When in use, the special gas pipeline is immersed and wrapped by water inside the water-controlled thermostatic box. The gas in the special gas pipeline is heated evenly by water heat conduction, and the heating temperature of the special gas pipeline can be accurately controlled by controlling the temperature of the water-controlled thermostatic box. Compared with the method of heating the special gas pipeline by using heat-insulating tin foil and a heating tape, this method can heat the gas evenly before passing through the gas outlet pipe to participate in the reaction, avoiding the problem of uneven heating of the internal gas due to high heat at the contact position between the heating tape and the special gas pipeline, and effectively reducing the risk of the special gas pipeline not being heated due to the shedding of the heating tape. In addition, Chinese invention patent CN217236066U discloses a pipeline heating and heat-insulating device, including a split stainless steel A bellows, a heating resistor wire is installed on the split stainless steel bellows, a temperature sensor is installed inside the transition shell, an insulation layer is fixedly installed on the outer wall of the split stainless steel bellows, the heating resistor wire and the temperature sensor are electrically connected to a controller. When the present invention is in use, the heating temperature of the heating resistor wire is adjusted by a temperature adjustment button, so that the nutrient solution or the medicine solution is heated when it flows through the heating interval, and the heated nutrient solution or the medicine solution flows into the insulation interval for insulation, and then flows out through the transition shell and is injected into the patient's body, and the temperature of the tube wall in the transition shell is measured during the outflow process, so that medical staff can clearly know the temperature of the outflowing nutrient solution or medicine solution, thereby realizing the function of heating and insulation of the infusion tube, nutrition tube, nasointestinal tube or nasogastric tube.

[0004] The above patented technologies all ensure the safety of pipelines and internal material transportation to a certain extent by combining heating and insulation. However, the following technical problems or areas for improvement still exist: (1) The design details of the insulation link have not been disclosed in detail, and excellent insulation effects cannot be guaranteed. 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 ship operations in polar water environments, the waterproofness of the pipeline should be considered at the same time, and the above patented technologies are all disclosed in this regard; (3) The application areas of the above patented technical solutions are not extreme cold temperature drop scenarios. Therefore, a multi-level treatment solution is required for the insulation and waterproof functions to ensure overall performance. Summary of the invention

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a pipeline heating and insulation system in an extremely low temperature environment and a method of using the same. The system adopts an integrated structure of heating, insulation and waterproofing, which not only realizes efficient control of pipe temperature, but also can more effectively cope with the application environment of polar temperature drop, and also greatly improves the pipeline's resistance to water environment; during use, the waterproof component blocks the external water environment from entering the interior of the device; then, the heating component generates heat by measuring and controlling the temperature of the pipe wall, maintaining the temperature of the pipe wall within a safe range, and then blocks the internal heat transfer through the nano-aerogel layer with low thermal conductivity, greatly improving the internal heat retention time, thereby improving the utilization rate of the heat generated by the heating component.

[0006] In order to achieve the above object, according to a first aspect of the present invention, the system comprises:

[0007] A heating component tightly wrapped around the surface of the heated pipeline, an internal heat insulation component wrapped around the outer surface of the heating component for blocking the heat exchange between the inside and outside, and an external waterproof component wrapped around the outer surface of the internal heat insulation component for blocking the entry of external water flow;

[0008] The heating assembly comprises a pipe temperature sensor in close contact with the heated pipe, 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 heat insulation component includes a nano-aerogel layer as a main structure;

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

[0011] Preferably, the pipeline heating and heat preservation system in an extremely low temperature environment further comprises a uniform wire winding unit for uniformly winding the electric heating wire onto the pipeline surface;

[0012] The uniform wire winding unit comprises a walking unit for driving the entire unit to walk along the pipeline surface, and a turnover wire outlet unit arranged at the front end of the walking unit for winding and releasing wire along the pipeline surface.

[0013] Preferably, the walking unit comprises:

[0014] A first lower annular shell, a first upper annular shell, a first rotating connection portion and a first opening and closing assembly end for rotating and opening and closing the first lower annular shell and the first upper annular shell, and a travel drive assembly provided on the inner side walls of the first lower annular shell and the first upper annular shell; a pipeline is located between the first lower annular shell and the first upper annular shell;

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

[0016] The travel transmission mechanism includes a bearing block arranged radially in the direction of the inner surface of the first lower annular shell and the first upper annular shell, a wheel body groove arranged at the front end of the bearing block, a friction travel wheel rotatably connected to the wheel body groove through a transmission shaft, a first transmission pulley coaxially fixedly connected to the transmission shaft, a second transmission pulley and a drive motor that drive the first transmission pulley to rotate through a transmission belt.

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

[0018] A radial sliding groove is provided on the inner surface of the first lower annular shell and the first upper annular shell and is 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 provided on the bearing block, and a limiting sliding 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 outlet unit comprises:

[0020] A second lower annular shell, a second upper annular shell, a second rotating connection part for rotating and 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, a surface annular groove facing the annular cavity opening along the front side of the second lower annular shell and the second upper annular shell, alternating magnetic poles equidistantly arranged on the side wall of the annular cavity, and a rotating wire-spinning assembly that maintains a sliding connection in the annular cavity and rotates in a directionally controlled manner under the action of the alternating magnetic poles; the side of the rotating wire-spinning assembly is provided with magnetic poles that attract the alternating magnetic poles.

[0021] Preferably, the rotary thread-laying assembly comprises:

[0022] A ring channel shuttle base body slidably connected to the annular cavity, an intermediate connecting block fixedly connected to the outer side of the ring channel shuttle base body and passing through the surface annular groove, a wheel bin fixedly connected to the protruding end of the intermediate connecting block, a rotating hub rotatably connected to the inside of the wheel bin and wound with a heating wire, and a friction speed limiting component arranged near the rotating shaft of the rotating hub to prevent the rotating hub from rotating due to inertia; a discharging head is arranged at the front end of the wheel bin;

[0023] The friction speed limiting assembly includes a slide groove opened in the wheel house toward the rotating shaft of the rotating hub, a rubber slide rod slidably connected along the slide groove, and a second push spring arranged at the rear end of the rubber slide rod and used to tightly push the rubber slide rod against the rotating shaft of the rotating hub;

[0024] Magnetic poles are arranged on the side of the ring shuttle matrix.

[0025] Preferably, the internal heat insulation assembly further comprises:

[0026] The stainless steel foil is used to reflect the heat generated by the heating component and retain it in the heated pipeline. The stainless steel foil is attached to the surface of the heating component.

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

[0028] A stainless steel plate for secondary waterproofing is attached and installed on the surface of the nano aerogel layer.

[0029] Preferably, the tube temperature sensor comprises: 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 comprises a temperature-variable material attached to the surface of the heated pipe for converting temperature changes into deformation changes, a flexible strain sensing sheet arranged on the surface of the temperature-variable material, and a signal conditioning circuit connected to the output end of the flexible strain sensing sheet.

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

[0032] S100: First, the lower annular shell and the upper annular shell are opened through the opening and closing assembly end, the device clamp is installed on the pipeline surface, and then the opening and closing assembly end is locked;

[0033] S200: Start the system. Under the action of the walking unit, the device as a whole will move along the direction of the pipeline. At the same time, the alternating magnetic poles in the turnover wire unit are controlled to alternately generate reverse magnetic fields, thereby attracting the magnetic poles on the surface of the loop shuttle substrate, so that the loop shuttle substrate moves in a directional and constant speed, thereby driving the rotating wire-spinning assembly to rotate along the axial direction of the pipeline, and under the dragging action of the heating wire, it will be drawn out from the wheel bin, so as to be evenly wound on the surface of the pipeline;

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

[0035] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0036] (1) The present invention provides a pipeline heating and insulation system for extremely low temperature environments. By adopting an integrated heating, insulation and waterproof structure, it not only realizes efficient control of the pipe temperature, but also can more effectively cope with the application environment of polar temperature drop, and also greatly improves the resistance of the pipeline to the water environment. During use, the waterproof component blocks the external water environment from entering the interior of 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, and then blocks the internal heat transfer through the nano-aerogel layer with low thermal conductivity, greatly improving the internal heat retention time, thereby improving the utilization rate of the heat generated by the heating component.

[0037] (2) A pipeline heating and insulation system in an extremely low temperature environment of the present invention assists in the heating wire winding on the pipeline surface by setting a heating wire winding tool, thereby effectively improving the uniformity of winding and the construction efficiency, and pushing the winding process to the standardization of operation; during use, 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; then, start the system, and under the action of the walking unit, the device as a whole will move along the pipeline direction. At the same time, the alternating magnetic poles in the turnover line unit are controlled to alternately generate reverse magnetic fields, thereby attracting the magnetic poles on the surface of the loop shuttle substrate, thereby making the loop shuttle substrate move in a directional and constant speed, thereby driving the rotating wire-spitting component to rotate along the pipeline axis, and under the dragging action of the heating wire, it will be drawn out from the wheel bin, so as to be evenly wound on the pipeline surface;

[0038] (3) In the present invention, a pipeline heating and heat preservation system in an extremely low temperature environment can reflect the heat generated by the heating component by attaching a stainless steel foil on the surface of the heating component, further slowing down the diffusion of heat outward, thereby playing a secondary heat preservation 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 use strength of the device, and generally enhances the safety of the system.

[0039] (4) In the embodiment of the present invention, by adopting an integrated structure of heating, heat preservation and waterproofing, not only is the efficient control of the pipe temperature achieved, but also the application environment of the polar temperature drop can be more effectively coped with, and the pipeline's resistance to the water environment is greatly improved; during use, the waterproof component blocks the external water environment from entering the interior of the device; then, the heating component generates heat by measuring and controlling the pipe wall temperature to maintain the pipe wall temperature within a safe range, and then the internal heat transfer is blocked by the low thermal conductivity nano aerogel layer, which greatly increases the internal heat retention time, thereby improving the utilization rate of the heat generated by the heating component. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the overall structure of a pipeline heating and insulation system in an extremely low temperature environment;

[0041] Figure 2 It is a schematic diagram of the structure of a pipe temperature sensor of a pipe heating and insulation system in an extremely low temperature environment;

[0042] Figure 3 It is a schematic diagram of the structure of the uniform wire winding unit in use of a pipeline heating and insulation system in an extremely low temperature environment;

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

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

[0046] Figure 7 It is a schematic diagram of the structure of a rotating wire-spitting component of a pipeline heating and insulation system in an extremely low temperature environment;

[0047] Figure 8 It is a flow chart of the method of using the pipeline heating and insulation system in an extremely low temperature environment;

[0048] The names corresponding to the figure numbers in the figure are: 1-electric heating wire, 2-heated pipeline, 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 body groove, 71513-friction walking wheel, 71514-first transmission pulley, 71515-second transmission pulley, 71516-transmission belt, 7151 7-driving motor, 7152-tube diameter adaptation mechanism, 71521-radial slide groove, 71522-limiting slot, 71523-limiting slide rod, 71524-first push spring, 720-circuit outlet 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 spouting assembly, 7271-annular shuttle base, 7272-middle connecting block, 7273-wheel warehouse, 7274-rotating hub, 7275-second push spring, 7276-rubber slide rod, 7277-slide groove, 7278-discharging head. DETAILED DESCRIPTION

[0049] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0051] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present 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 an embodiment of the present invention, the pipeline heating and heat preservation system in an extremely low temperature environment includes:

[0054] A heating component tightly wrapped around the surface of the heated pipe 2, an internal heat insulation component wrapped around the outer surface of the heating component for blocking the heat exchange between the inside and outside, and an external waterproof component wrapped around the outer surface of the internal heat insulation component for blocking the entry of external water flow;

[0055] The heating assembly includes a pipe temperature sensor in close contact with the heated pipe 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 a main structure;

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

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

[0059] like Figures 3 to 7 As shown, in an embodiment of the present invention, the pipeline heating and heat preservation system in an extremely low temperature environment further includes a uniform winding unit 7 for uniformly winding the electric heating wire onto the surface of the pipeline;

[0060] The uniform wire winding unit 7 includes a walking unit 710 that drives the entire unit to move along the surface of the pipeline, and a turnover wire-out unit 720 that is disposed at the front end of the walking unit 710 and is used for winding and releasing the wire along the surface of the pipeline.

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

[0062] A first lower annular shell 711, a first upper annular shell 712, a first rotating connection portion 713 and a first opening and closing assembly end 714 for rotating and opening and closing the first lower annular shell 711 and the first upper annular shell 712, and a travel drive assembly 715 provided on the inner side walls of the first lower annular shell 711 and the first upper annular shell 712; a pipeline is located between the first lower annular shell 711 and the first upper annular shell 712;

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

[0064] The travel transmission mechanism 7151 includes a bearing block 71511 arranged on the inner surfaces of the first lower annular shell 711 and the first upper annular shell 712 and maintained in a radial direction, a wheel body groove 71512 arranged at the front end of the bearing block 71511, a friction travel wheel 71513 rotatably connected to the wheel body groove 71512 via a transmission shaft, a first transmission pulley 71514 coaxially fixedly connected to the transmission shaft, a second transmission pulley 71515 and a driving motor 71517 that drive the first transmission pulley 71514 to rotate via a transmission belt 71516;

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

[0066] A radial sliding groove 71521 is provided on the inner surfaces of the first lower annular shell 711 and the first upper annular shell 712 and is slidably connected to the supporting block 71511, a first pushing spring 71524 is arranged between the bottom of the supporting block 71511 and the bottom surface of the supporting block 71511, a limiting slot 71522 is provided on the supporting block 71511, and a limiting sliding 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 present invention, the turnover outlet unit 720 includes:

[0068] A second lower annular shell 721, a second upper annular shell 722, a second rotating connecting part 723 for rotating and 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 facing 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 equidistantly arranged and alternating on the side wall of the annular cavity 725, and a rotating wire-spinning assembly 727 that maintains a sliding connection in the annular cavity 725 and rotates in a directionally controlled manner under the action of the alternating magnetic poles 726; the side of the rotating wire-spinning assembly 727 is provided with magnetic poles that attract the alternating magnetic poles 726.

[0069] like Figure 7 As shown, in the embodiment of the present invention, the rotating thread-dispensing assembly 727 comprises:

[0070] A ring channel shuttle base 7271 slidably connected to the annular cavity 725, an intermediate connecting block 7272 fixedly connected to the outer side of the ring channel shuttle base 7271 and passing through the surface annular groove 724, a wheel bin 7273 fixedly connected to the protruding end of the intermediate connecting block 7272, a rotating hub 7274 rotatably connected to the inside of the wheel bin 7273 and wound with a heating wire, and a friction speed limiting component arranged near the rotating shaft of the rotating hub 7274 for preventing the rotating hub 7274 from rotating by inertia; a discharging head 7278 is arranged at the front end of the wheel bin 7273;

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

[0072] The side of the ring shuttle base 7271 is provided with a magnetic pole.

[0073] In the embodiment of the present invention, by adopting an integrated structure of heating, heat preservation and waterproofing, not only is the efficient control of the pipe temperature achieved, but also the application working conditions of the polar temperature drop can be more effectively coped with, and the resistance of the pipeline to the water environment is greatly improved; during use, the waterproof component blocks the external water environment from entering the interior of the device; then, the heating component generates heat by measuring and controlling the temperature of the pipe wall, maintaining the temperature of the pipe wall within a safe range, and then blocks the internal heat transfer through the nano aerogel layer 5 with low thermal conductivity, greatly improving the internal heat retention time, thereby improving the utilization rate of the heat generated by the heating component.

[0074] In addition, in the embodiment of the present invention, a heating wire winding tool is provided to assist in the heating wire winding on the pipeline surface, thereby effectively improving the uniformity of the winding and the construction efficiency, and pushing the winding process to the standardization of the operation; during use, 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; then, start the system, and under the action of the walking unit 710, the entire device will move along the pipeline direction. At the same time, the alternating magnetic poles 726 in the turnover wire unit 720 are controlled to alternately generate reverse magnetic fields, thereby attracting the magnetic poles on the surface of the loop shuttle matrix 7271, and then the loop shuttle matrix moves in a directional and constant speed, thereby driving the rotating wire-spitting component 727 to rotate along the pipeline axis, and under the dragging action of the heating wire, it will be drawn out from the wheel bin, so as to be evenly wound on the pipeline surface.

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

[0076] The stainless steel foil 6 is used to reflect the heat generated by the heating component and retain it in the heated pipeline 2. 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 present invention, the external waterproof component further includes:

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

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

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

[0081] In an embodiment of the present invention, the tube 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 an embodiment of the present invention, the pipe temperature sensor includes:

[0083] A temperature-variable material attached to the surface of the heated pipeline 2 for converting temperature changes into deformation changes, a flexible strain sensing sheet arranged on the surface of the temperature-variable material, and a signal conditioning circuit connected to the output end of the flexible strain sensing sheet.

[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 comprises the following steps:

[0085] S100: First, the lower annular shell and the upper annular shell are opened through the opening and closing assembly end, the device clamp is installed on the pipeline surface, and then the opening and closing assembly end is locked;

[0086] S200: Start the system. Under the action of the walking unit 710, the device as a whole will move along the pipeline direction. At the same time, the alternating magnetic poles 726 in the turnover wire unit 720 are controlled to alternately generate reverse magnetic fields, thereby attracting the magnetic poles on the surface of the loop shuttle substrate 7271, so that the loop shuttle substrate moves in a directional and constant speed, thereby driving the rotating wire-dispensing assembly 727 to rotate along the pipeline axis, and under the dragging action of the heating wire, it will be drawn out from the wheel bin, so as to be evenly wound on the pipeline surface;

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

[0088] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. A pipeline heating and insulation system in an extremely low temperature environment, characterized in that: include: A heating component tightly wrapped around the surface of the heated pipeline (2), an internal heat insulation component wrapped around the outer surface of the heating component for blocking heat exchange between the inside and outside, and an external waterproof component wrapped around the outer surface of the internal heat insulation component for blocking external water flow from entering; The heating assembly comprises a pipe temperature sensor in close contact with the heated pipe (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 heat insulation component comprises a nano-aerogel layer (5) as a main structure; The external waterproof component comprises a waterproof resin layer (4) as a main structure.

2. The pipeline heating and insulation system in an extremely low temperature environment according to claim 1, characterized in that: The pipeline heating and heat preservation system in an extremely low temperature environment further comprises a uniform wire winding unit (7) for uniformly winding the electric heating wire onto the surface of the pipeline; The uniform wire winding unit (7) comprises a walking unit (710) for driving the entire unit to walk along the surface of the pipeline, and a turnover wire-discharging unit (720) disposed at the front end of the walking unit (710) for winding and releasing the wire along the surface of the pipeline.

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

4. The pipeline heating and insulation system in an extremely low temperature environment according to claim 3, characterized in that: The pipe diameter adaptation mechanism (7152) comprises: A radial sliding 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 supporting block (71511), a first pushing spring (71524) is provided between the bottom of the supporting block (71511) and the bottom surface of the supporting block (71511), a limiting groove (71522) is provided on the supporting block (71511), and a limiting sliding 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 groove (71522).

5. The pipeline heating and insulation system in an extremely low temperature environment according to claim 2, characterized in that: The turnover outlet unit (720) comprises: A second lower annular shell (721), a second upper annular shell (722), a second rotating connection portion (723) for rotating and opening and closing the second lower annular shell (721) and the second upper annular shell (722), an annular cavity (725) provided inside the second lower annular shell (721) and the second upper annular shell (722), a surface annular groove (724) provided along the front side of the second lower annular shell (721) and the second upper annular shell (722) and facing the annular cavity (725), alternating magnetic poles (726) arranged equidistantly and alternately on the side wall of the annular cavity (725), and a rotating wire-dispensing assembly (727) which maintains a sliding connection in the annular cavity (725) and rotates in a directionally controlled manner under the action of the alternating magnetic poles (726); a magnetic pole which attracts the alternating magnetic poles (726) is provided on the side of the rotating wire-dispensing assembly (727).

6. The pipeline heating and insulation system in an extremely low temperature environment according to claim 5, characterized in that: The rotating thread-laying assembly (727) comprises: A ring channel shuttle base (7271) slidably connected to the annular cavity (725), an intermediate connecting block (7272) fixedly connected to the outer side surface of the ring channel shuttle base (7271) and extending through the surface annular groove (724), a wheel bin (7273) fixedly connected to the protruding end of the intermediate connecting block (7272), a rotating hub (7274) rotatably connected to the inside of the wheel bin (7273) and wound with a heating wire, and a friction speed limiting component arranged near the rotating shaft of the rotating hub (7274) for preventing the rotating hub (7274) from rotating due to inertia; a discharging head (7278) is arranged at the front end of the wheel bin (7273); The friction speed limiting assembly comprises a slide groove (7277) provided in the wheel chamber (7273) in the direction of the rotating shaft of the rotating hub (7274), a rubber slide bar (7276) slidably connected along the slide groove (7277), and a second push spring (7275) provided at the rear end of the rubber slide bar (7276) and used for tightly contacting the rubber slide bar (7276) with the rotating shaft of the rotating hub (7274); The side of the ring shuttle base (7271) is provided with a magnetic pole.

7. The pipeline heating and insulation system in an extremely low temperature environment according to claim 1, characterized in that: The internal thermal insulation assembly further comprises: A stainless steel foil (6) is used to reflect and retain the heat generated by the heating component to the heated pipeline (2), and the stainless steel foil (6) is attached to the surface of the heating component.

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

9. The pipeline heating and heat preservation system in an extremely low temperature environment 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 comprises a temperature-variable material attached to the surface of the heated pipe (2) for converting temperature changes into deformation changes, a flexible strain sensing sheet arranged on the surface of the temperature-variable material, and a signal conditioning circuit connected to the output end of the flexible strain sensing sheet.

10. A method for using a pipeline heating and insulation system in an extremely low temperature environment, characterized in that: The steps include: S100: First, the lower annular shell and the upper annular shell are opened through the opening and closing assembly end, the device clamp is installed on the pipeline surface, and then the opening and closing assembly end is locked; S200: Start the system. Under the action of the walking unit (710), the entire device moves along the pipeline direction. At the same time, the alternating magnetic poles (726) in the turnover wire unit (720) are controlled to alternately generate reverse magnetic fields, thereby attracting the magnetic poles on the surface of the loop shuttle substrate (7271), thereby causing the loop shuttle substrate to move in a directional and constant speed, thereby driving the rotating wire-dispensing assembly (727) to rotate along the pipeline axis, and under the dragging action of the heating wire, it will be drawn out of the wheel bin, thereby being evenly wound on the pipeline surface; S300: After the winding is completed, the entire device is removed from the pipeline to complete the winding operation.

Images