Pipeline anti-freezing heating and heat preservation system and method under polar region large variable temperature environment

Abstract

The invention discloses a pipeline anti-freezing heating and heat preservation system and method under a polar region large variable temperature environment. The system comprises an electric heating belt, a multi-layer heat insulation material, a waterproof layer and an adhesive auxiliary spraying unit. By adopting a comprehensive temperature control measure of combining heating and heat preservation, the reliability of working in an extremely low-temperature environment is ensured; in addition, a waterproof layer is additionally arranged on the basis of the heating and heat preservation functions, and safe execution of operation tasks of the naval vessel in the polar region water environment is effectively guaranteed; and through refined design of multiple layers of heat insulation materials, the heat insulation benefit is optimized to a great extent from the perspective of method design, and the insulation effect is improved. In addition, by additionally arranging the adhesive auxiliary spraying unit, the surface of the pipeline is cleaned, the spraying quality is higher, the attaching effect of the heating belt and the surface of the pipeline is better, the spraying efficiency and quality of the adhesive on the surface of the pipeline are greatly improved by adopting an automatic device, and the device has more remarkable advantages when being used for large-scale pipeline construction operation.

Description

Technical Field

[0001] The embodiments of the present invention belong to the technical field of pipeline antifreeze, and more specifically, to a pipeline antifreeze heating and insulation system and method in a polar large temperature change environment. 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, there are still the following technical problems or areas for improvement: (1) Although the electric heating wire heating method adopted by CN217236066U can achieve the heating effect, due to its structural characteristics, it is impossible to evenly cover the pipeline surface over a large area, resulting in difficulty in ensuring the uniformity of heating on the pipeline surface and low heating efficiency; (2) The design details of the insulation link are not disclosed in detail, and excellent insulation effect cannot be guaranteed. Therefore, the insulation component should be further optimized; (3) 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 also be considered, and the above patented technologies are all disclosed in this regard. Summary of the invention

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a pipeline antifreeze heating and insulation system and method in a polar large temperature change environment. By adopting a comprehensive temperature control measure combining heating and insulation, the reliability of operation in an extremely low temperature environment is ensured; and the electric heating belt heating method is adopted, which has a large contact area and high heating efficiency compared to the electric heating wire, and has a high conversion efficiency; the heating speed is fast to meet the rapid heating requirements; in addition, on the basis of the heating and insulation functions, a waterproof layer is added to effectively ensure the safe execution of ship operations in polar water environments; and through the detailed design of multi-layer insulation materials, a three-level composite structure of the main insulation layer, the heat reflection layer and the outermost insulation layer is adopted, which greatly optimizes the heat barrier effect from the perspective of method design and improves the barrier effect.

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

[0007] An electric heating tape evenly and fully wrapped around the outer surface of the pipeline, a multi-layer thermal insulation material attached to the outer layer of the electric heating tape and used to block the heat exchange between the air and the pipeline surface, a waterproof layer attached to the outer layer of the multi-layer thermal insulation material, and an adhesive auxiliary spraying unit for cleaning the pipeline surface and spraying adhesive;

[0008] The multi-layer heat-insulating material comprises an intermediate layer that plays a major role in heat insulation, an inner reflective layer that wraps around both sides of the intermediate layer as a secondary heat-insulating component and is used to reflect heat, and an outer layer that wraps around the reflective layer as a tertiary heat-insulating component; the waterproof layer comprises a waterproof resin material;

[0009] The adhesive auxiliary spraying unit includes a walking unit for driving the entire unit to move along the surface of the pipeline, a wind dust removal unit installed at the rear side of the walking unit and used to remove dust and dirt on the surface of the pipeline, and a spraying unit installed at the front side of the walking unit for spraying adhesive;

[0010] The adhesive auxiliary spraying unit is used to clean the dirt on the pipeline surface and quickly spray the adhesive to improve the tightness of the electric heating belt and the pipeline surface; the inner reflection layer and the outer layer are both double-sided aluminum-plated polyester films.

[0011] Preferably, the intermediate layer comprises:

[0012] Glass fiber and double-sided aluminized film;

[0013] The glass fiber and the double-sided aluminum-plated film are overlapped with each other.

[0014] Preferably, the glass fibers and the double-sided aluminum-plated films overlap each other in groups greater than two.

[0015] Preferably, the waterproof layer further comprises:

[0016] A stainless steel plate layer is arranged on the outer layer of the waterproof resin.

[0017] Preferably, the operating temperature range of the electric heating belt is between -100°C and 100°C.

[0018] Preferably, the walking unit comprises:

[0019] A first lower annular shell, a second 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 second upper annular shell, and a travel drive assembly provided on the inner side walls of the first lower annular shell and the second upper annular shell; a pipeline is located between the first lower annular shell and the second upper annular shell;

[0020] 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;

[0021] The travel transmission mechanism includes a bearing block arranged radially in the direction of the inner surfaces of the first lower annular shell and the second 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.

[0022] Preferably, the pipe diameter adaptation mechanism comprises:

[0023] A radial sliding groove is provided on the inner surface of the first lower annular shell and the second upper annular shell and is slidably connected to the bearing block, a 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 second upper annular shell and is laterally inserted into the limiting slot.

[0024] Preferably, the wind dust removal unit comprises:

[0025] A second lower annular shell, a second upper annular shell, a second rotating connection part and a second opening and closing connection part for rotating and opening and closing the second lower annular shell and the second upper annular shell, an annular air duct opened inside the second lower annular shell and the second upper annular shell, a blower fixedly connected to the inner wall of the annular air duct, and an air flow nozzle connected to the annular air duct and opened on the inner wall of the second lower annular shell and the second upper annular shell.

[0026] Preferably, the spraying unit comprises:

[0027] A third lower annular shell, a third upper annular shell, a third rotating connection part and a third opening and closing connection part for rotating and opening and closing the third lower annular shell and the third upper annular shell, a high-speed airflow channel opened inside the third lower annular shell and the third upper annular shell, a flow input pipeline connected to the high-speed airflow channel and extending outward, liquid storage cotton arranged in an annular manner inside the third lower annular shell and the third upper annular shell, an output pipe section in an annular equidistant array opened on the inner wall of the third lower annular shell and the third upper annular shell and connected to the high-speed airflow channel, an adhesive nozzle connected to the output end of the output pipe section; a siphon connected to the output pipe section and the liquid storage cotton.

[0028] According to a second aspect of the present invention, a method for using a pipeline antifreeze heating and heat preservation device in a polar large temperature change environment comprises the following steps:

[0029] S100: opening the opening and closing assembly end in the adhesive auxiliary spraying unit, adding the pipeline to the lower annular shell and the upper annular shell, and under the action of the pipe diameter adaptation mechanism, making the travel transmission mechanism close to the pipeline, and then starting the system;

[0030] S200: driving the friction travel wheel to rotate by means of the travel transmission mechanism, thereby driving the entire device to move along the pipeline;

[0031] S300: Under the action of the blower, high-speed airflow passes through the annular air duct and is ejected from the airflow nozzle, thereby removing dirt on the surface of the pipeline;

[0032] S400: The device moves backward as a whole, so that the cleaned pipeline passes through the spraying unit. Under its action, the airflow of the airflow input pipeline passes through the siphon pipe mouth, generating a siphon effect, sucking the adhesive in the liquid storage cotton to the adhesive nozzle, and spraying it out, thereby realizing rapid spraying of the adhesive.

[0033] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0034] (1) The pipeline antifreeze heating and insulation system in a polar large temperature change environment of the present invention uses aluminized polyester film for heat insulation. This material is a film material with excellent heat insulation performance, good corrosion resistance and high gloss. The aluminized film can reflect solar radiation, effectively block the temperature inside the pipeline, and play a certain heat insulation effect; in addition, the aluminized film has good corrosion resistance and a long service life, and the surface finish of the aluminized film is high, with good texture and visual effect;

[0035] (2) The pipeline antifreeze heating and insulation system in a polar large temperature change environment of the present invention ensures the reliability of operation in an extremely low temperature environment by adopting a comprehensive temperature control measure combining heating and insulation; and adopts an electric heating belt heating method, which has a large contact area and high heating efficiency compared to electric heating wires, and has a high conversion efficiency; the heating speed is fast, meeting the rapid heating requirements; in addition, on the basis of the heating and insulation functions, a waterproof layer is added to effectively ensure the safe execution of ship operations in polar water environments; and through the detailed design of multi-layer thermal insulation materials, a three-level composite structure of a main thermal insulation layer, a heat reflection layer and an outermost thermal insulation layer is adopted, which greatly optimizes the heat blocking benefit from the perspective of method design and improves the blocking effect;

[0036] (3) The pipeline antifreeze heating and insulation system in a polar large temperature change environment of the present invention adopts a pressure-resistant composite waterproof layer, uses a stainless steel plate as a secondary waterproof layer, and considers the internal structure waterproofing and the external waterproofing simultaneously, which has a better waterproof effect and ensures the safe and stable operation in a high-pressure water environment;

[0037] (4) In the embodiment of the present invention, by adding an adhesive auxiliary spraying unit, not only the pipeline surface is cleaned, so that the spraying quality is higher and the fitting effect between the heating belt and the pipeline surface is better, but also the use of an automated device greatly improves the spraying efficiency and quality of the adhesive on the pipeline surface, which has more significant advantages when dealing with large-scale pipeline construction operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic diagram of the overall structure of a pipeline antifreeze heating and insulation system in a polar large temperature change environment according to an embodiment of the present invention;

[0039] Figure 2 This is a structural diagram of a multi-layer insulation material of a pipeline antifreeze heating and heat preservation system in a polar large temperature change environment according to an embodiment of the present invention;

[0040] Figure 3 This is a usage state diagram of an adhesive auxiliary spraying unit of a pipeline antifreeze heating and insulation system in a polar large temperature change environment according to an embodiment of the present invention;

[0041] Figure 4This is a schematic diagram of the overall structure of a traveling unit of a pipeline antifreeze heating and insulation system in a polar large temperature change environment according to an embodiment of the present invention;

[0042] Figure 5 This is a schematic diagram of the partial structure of a traveling unit of a pipeline antifreeze heating and insulation system in a polar large temperature change environment according to an embodiment of the present invention;

[0043] Figure 6 This is a schematic diagram of the structure of a wind-powered dust removal unit of a pipeline antifreeze heating and insulation system in a polar large temperature change environment according to an embodiment of the present invention;

[0044] Figure 7 This is a schematic diagram of the structure of a spray unit of a pipeline antifreeze heating and insulation system in a polar large temperature change environment according to an embodiment of the present invention;

[0045] Figure 8 This is a flow chart of a method for using a pipeline antifreeze heating and insulation system in a polar large temperature change environment according to an embodiment of the present invention;

[0046] In all the drawings, the same reference numerals represent the same technical features, specifically: 1-electric heating belt, 2-multi-layer insulation material, 4-double-sided aluminized polyester film, 5-glass fiber, 6-double-sided aluminized film, 3-waterproof layer, 7-adhesive auxiliary spraying 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, 71517-drive motor , 7152-tube diameter adaptation mechanism, 71521-radial slide groove, 71522-limiting slot, 71523-limiting slide rod, 71524-pushing spring, 720-wind dust removal unit, 721-second lower annular shell, 722-second upper annular shell, 723-second rotating connection part, 724-second opening and closing connection part, 725-blower, 726-annular air duct, 727-air flow nozzle, 730-spraying unit, 731-third lower annular shell, 732-third upper annular shell, 733-third rotating connection part, 734-third opening and closing connection part, 735-high-speed air flow channel, 736-air flow input pipeline, 737-output pipe section, 738-siphon, 739-liquid storage cotton, 7310-adhesive nozzle. DETAILED DESCRIPTION

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] like Figures 1 to 3 As shown, in an embodiment of the present invention, the pipeline antifreeze heating and insulation system in a polar large temperature change environment includes:

[0052] An electric heating tape 1 uniformly and fully wrapped around the outer surface of the pipeline, a multi-layer heat-insulating material 2 attached to the outer layer of the electric heating tape 1 and used to block the heat exchange between the air and the pipeline surface, a waterproof layer attached to the outer layer of the multi-layer heat-insulating material 2, and an adhesive auxiliary spraying unit 7 for cleaning the pipeline surface and spraying adhesive;

[0053] The multilayer heat-insulating material 2 comprises an intermediate layer that plays a major role in heat insulation, an inner reflective layer that wraps the inner and outer sides of the intermediate layer as a secondary heat-insulating component and is used to reflect heat, and an outer layer that wraps the reflective layer as a tertiary heat-insulating component; the waterproof layer 3 comprises a waterproof resin material;

[0054] The adhesive auxiliary spraying unit 7 includes a walking unit 710 for driving the entire unit to move along the surface of the pipeline, a wind dust removal unit 720 installed at the rear side of the walking unit 710 and used to remove dust and dirt on the surface of the pipeline, and a spraying unit 730 installed at the front side of the walking unit 710 for spraying adhesive;

[0055] The adhesive auxiliary spraying unit 7 is used to clean dirt on the pipeline surface and quickly spray the adhesive to improve the tightness of the electric heating belt 1 and the pipeline surface.

[0056] In the embodiment of the present invention, a comprehensive temperature control measure combining heating and heat preservation is adopted to ensure the reliability of working in an extremely low temperature environment; and an electric heating belt heating method is adopted, which has a large contact area and high heating efficiency compared to electric heating wires, and has a high conversion efficiency; the heating speed is fast to meet the rapid heating requirements; in addition, on the basis of the heating and heat preservation functions, a waterproof layer 3 is added to effectively ensure the safe execution of the ship's operating tasks in the polar water environment.

[0057] In addition, by refining the design of the multi-layer thermal insulation material 2 and adopting a three-level composite structure of a main thermal insulation layer, a heat reflecting layer and an outermost thermal insulation layer, the heat barrier efficiency is optimized to a great extent from the perspective of method design and the barrier effect is improved.

[0058] like Figure 2 As shown, in the embodiment of the present invention, the inner reflection layer and the outer layer are both double-sided aluminum-coated polyester films 4.

[0059] In the embodiment of the present invention, heat insulation is performed by using an aluminized polyester film, which is a film material with excellent heat insulation performance, good corrosion resistance and high gloss. The aluminized film can reflect solar radiation, effectively block the temperature inside the pipeline, and play a good heat insulation effect; in addition, the aluminized film has good corrosion resistance and a long service life, and the surface finish of the aluminized film is high, with good texture and visual effect.

[0060] like Figure 2 As shown, in an embodiment of the present invention, the intermediate layer includes:

[0061] Glass fiber 5 and double-sided aluminized film 6;

[0062] The glass fiber 5 and the double-sided aluminum-plated film 6 are formed by overlapping each other.

[0063] like Figure 2 As shown, in the embodiment of the present invention, the glass fibers 5 and the double-sided aluminum-plated films 6 overlap each other in groups greater than two.

[0064] like Figure 3 As shown, in the embodiment of the present invention, the waterproof layer 3 further includes:

[0065] A stainless steel plate layer is arranged on the outer layer of the waterproof resin.

[0066] In the embodiment of the present invention, a pressure-resistant composite waterproof layer is adopted, and a stainless steel plate is used as a secondary waterproof layer. The internal structure waterproofing and the external waterproofing are considered simultaneously, and the waterproofing effect is better. At the same time, the safe and stable operation in the high-pressure water environment is guaranteed.

[0067] In an embodiment of the present invention, the operating temperature range of the electric heating belt is between -100°C and 100°C.

[0068] like Figures 3 to 5 As shown, in this embodiment of the present invention, the walking unit 710 includes:

[0069] 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;

[0070] 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;

[0071] 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;

[0072] like Figures 3 to 5 As shown, in this embodiment of the present invention, the pipe diameter adaptation mechanism 7152 includes:

[0073] 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 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.

[0074] like Figure 6 As shown, in this embodiment of the present invention, the wind dust removal unit 720 includes:

[0075] A second lower annular shell 721, a second upper annular shell 722, a second rotating connection part 723 and a second opening and closing connection part 724 for rotating and opening and closing the second lower annular shell 721 and the second upper annular shell 722, an annular air duct 726 opened inside the second lower annular shell 721 and the second upper annular shell 722, a blower 725 fixedly connected to the inner wall of the annular air duct 726, and an air flow nozzle 727 connected to the annular air duct 726 and opened on the inner wall of the second lower annular shell 721 and the second upper annular shell 722.

[0076] like Figure 7 As shown, in this embodiment of the present invention, the spraying unit 730 includes:

[0077] A third lower annular shell 731, a third upper annular shell 732, a third rotating connection part 733 and a third opening and closing connection part 734 for rotating and opening and closing the third lower annular shell 731 and the third upper annular shell 732, a high-speed airflow channel 735 opened inside the third lower annular shell 731 and the third upper annular shell 732, a flow input pipeline 736 connected to the high-speed airflow channel 735 and extending outward, a liquid storage cotton 739 annularly arranged inside the third lower annular shell 731 and the third upper annular shell 732, an output pipe section 737 opened in an annular equidistant array on the inner wall of the third lower annular shell 731 and the third upper annular shell 732 and connected to the high-speed airflow channel 735, and an adhesive spray head 7310 connected to the output end of the output pipe section 737;

[0078] A siphon tube 738 is connected to the output pipe section 737 and the liquid storage cotton 739.

[0079] In the embodiment of the present invention, by adding an adhesive auxiliary spraying unit, not only the pipeline surface is cleaned, so that the spraying quality is higher and the fitting effect between the heating belt and the pipeline surface is better, but also the use of automated equipment greatly improves the spraying efficiency and quality of the adhesive on the pipeline surface, which has more significant advantages when dealing with large-scale pipeline construction operations.

[0080] like Figure 8 As shown, in another embodiment of the present invention, a pipeline antifreeze heating and heat preservation method in a polar large temperature change environment is provided. First, open the opening and closing assembly end in the adhesive auxiliary spraying unit, add the pipeline to the lower annular shell and the upper annular shell, and under the action of the pipe diameter adaptation mechanism, make the travel transmission mechanism close to the pipeline, and then start the system; then, drive the friction travel wheel to rotate with the help of the travel transmission mechanism, and then drive the device as a whole to move along the pipeline; then, under the action of the blower, the high-speed airflow passes through the annular air duct and is ejected from the airflow nozzle, thereby removing the dirt on the surface of the pipeline; then, the device as a whole moves backward, so that the cleaned pipeline passes through the spraying unit, under the action of which, the airflow input into the pipeline passes through the siphon pipe mouth, generating a siphon effect, sucking the adhesive in the liquid storage cotton to the adhesive nozzle, and ejecting it, thereby realizing the rapid spraying of the adhesive.

[0081] 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 antifreeze heating and insulation system in a polar large temperature change environment, characterized in that: include: An electric heating tape (1) uniformly and completely wrapped around the outer surface of the pipeline, a multi-layer heat-insulating material (2) attached to the outer layer of the electric heating tape (1) and used to prevent heat exchange between air and the pipeline surface, a waterproof layer attached to the outer layer of the multi-layer heat-insulating material (2), and an adhesive auxiliary spraying unit (7) used for cleaning the pipeline surface and spraying adhesive; The multilayer heat-insulating material (2) comprises an intermediate layer that plays a major role in heat insulation, an inner reflective layer that wraps around both sides of the intermediate layer as a secondary heat-insulating component and is used to reflect heat, and an outer layer that wraps around the reflective layer as a tertiary heat-insulating component; the waterproof layer (3) comprises a waterproof resin material; The adhesive auxiliary spraying unit (7) comprises a walking unit (710) for driving the entire unit to move along the surface of the pipeline, a wind dust removal unit (720) installed at the rear side of the walking unit (710) and used to remove dust and dirt on the surface of the pipeline, and a spraying unit (730) installed at the front side of the walking unit (710) and used to spray adhesive; The adhesive auxiliary spraying unit (7) is used to clean dirt on the pipeline surface and quickly spray the adhesive to improve the tightness of the electric heating belt (1) and the pipeline surface; The inner reflection layer and the outer layer are both double-sided aluminum-plated polyester films (4).

2. The pipeline antifreeze heating and insulation system in a polar large temperature change environment according to claim 1 is characterized in that: The intermediate layer comprises: Glass fiber (5) and double-sided aluminized film (6); The glass fiber (5) and the double-sided aluminum-plated film (6) are formed by overlapping each other.

3. The pipeline antifreeze heating and insulation system in a polar large temperature change environment according to claim 2, characterized in that: The glass fibers (5) and the double-sided aluminum-plated films (6) overlap each other in groups greater than two.

4. The pipeline antifreeze heating and insulation system in a polar large temperature change environment according to claim 1 is characterized in that: The waterproof layer (3) further comprises: A stainless steel plate layer is arranged on the outer layer of the waterproof resin.

5. A pipeline antifreeze heating and insulation system in a polar large temperature change environment according to any one of claims 1 to 4, characterized in that: The operating temperature range of the electric heating belt is between -100°C and 100°C.

6. The pipeline antifreeze heating and insulation system in polar large temperature change environment according to claim 1 is 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).

7. The pipeline antifreeze heating and insulation system in polar large temperature change environment according to claim 6, 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 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).

8. The pipeline antifreeze heating and insulation system in polar large temperature change environment according to claim 6, characterized in that: The wind dust removal unit (720) comprises: A second lower annular shell (721), a second upper annular shell (722), a second rotating connection part (723) and a second opening and closing connection part (724) for rotating and opening and closing the second lower annular shell (721) and the second upper annular shell (722), an annular air duct (726) opened inside the second lower annular shell (721) and the second upper annular shell (722), a blower (725) fixedly connected to the inner wall of the annular air duct (726), and an air flow nozzle (727) connected to the annular air duct (726) and opened on the inner wall of the second lower annular shell (721) and the second upper annular shell (722).

9. The pipeline antifreeze heating and insulation system in polar large temperature change environment according to claim 8, characterized in that: The spraying unit (730) comprises: A third lower annular shell (731), a third upper annular shell (732), a third rotating connection portion (733) and a third opening and closing connection portion (734) for rotating and opening and closing the third lower annular shell (731) and the third upper annular shell (732), a high-speed airflow channel (735) opened inside the third lower annular shell (731) and the third upper annular shell (732), a flow input pipeline (736) connected to the high-speed airflow channel (735) and extending outward, and a ring-shaped The liquid storage cotton (739) inside the third lower annular shell (731) and the third upper annular shell (732), the output pipe section (737) which is arranged in an annular equidistant array on the inner wall of the third lower annular shell (731) and the third upper annular shell (732) and is connected to the high-speed airflow channel (735), and the adhesive nozzle (7310) connected to the output end of the output pipe section (737); and the siphon tube (738) connected to the output pipe section (737) and the liquid storage cotton (739).

10. A method for using a pipeline antifreeze heating and heat preservation device in a polar large temperature change environment, characterized in that: The following steps are included: S100: opening the opening and closing assembly end in the adhesive auxiliary spraying unit, adding the pipeline to the lower annular shell and the upper annular shell, and under the action of the pipe diameter adaptation mechanism, making the travel transmission mechanism close to the pipeline, and then starting the system; S200: driving the friction travel wheel to rotate by means of the travel transmission mechanism, thereby driving the entire device to move along the pipeline; S300: Under the action of the blower, high-speed airflow passes through the annular air duct and is ejected from the airflow nozzle, thereby removing dirt on the surface of the pipeline; S400: The device moves backward as a whole, so that the cleaned pipeline passes through the spraying unit. Under its action, the airflow of the airflow input pipeline passes through the siphon pipe mouth, generating a siphon effect, sucking the adhesive in the liquid storage cotton to the adhesive nozzle, and spraying it out, thereby realizing rapid spraying of the adhesive.

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