Active cooling runner coating apparatus and method

Abstract

The active cooling channel coating device and method provided by this invention belong to the field of channel coating technology. The active cooling channel coating device includes a gas source component and a coating component. The gas source component is used to fill the coating component with pressurized gas. The coating component includes a pressure vessel, a pressure vessel cover, a stirring part, a material conveying part, and a gas conveying part. The lower end of the side wall of the pressure vessel has a throttling discharge port, and there are several throttling discharge ports. The upper end of the side wall of the pressure vessel has an air port. One end of the stirring part is connected to the pressure vessel cover, and the other end of the stirring part extends into the pressure vessel. The output end of the gas source component is detachably connected to the air port. One end of the material conveying part is detachably connected to both the throttling discharge port and the other end of the material conveying part is detachably connected to the bottom of the active cooling channel. One end of the gas conveying part is detachably connected to the output end of the gas source component, and the other end of the gas conveying part is detachably connected to the bottom or top of the active cooling channel.

Description

Technical Field

[0001] This invention relates to the field of flow channel coating technology, and in particular to an active cooling flow channel coating apparatus and method. Background Technology

[0002] With the increasing demand for efficient cooling technologies in high-end manufacturing fields such as aerospace and energy, additive manufacturing (AM) technology is bringing revolutionary changes to the design and manufacturing of active cooling structures. In recent years, this interdisciplinary field has shown rapid development, mainly reflected in the fact that additive manufacturing has broken free from the limitations of traditional subtractive manufacturing processes, making it possible to design complex internal flow channel structures. Engineers can break through traditional thinking and design components with innovative cooling structures such as fractal structures, spiral channels, and porous media, significantly improving cooling efficiency. NASA and other institutions have successfully applied additively manufactured cooling structures to rocket engine nozzles, improving cooling efficiency by more than 40%. From traditional nickel-based high-temperature alloys to new refractory high-temperature alloy materials, the types of materials that additive manufacturing technology can process are constantly expanding, especially special alloys developed for extreme working environments, such as high-temperature resistant tantalum-niobium-based alloys, which provide better material choices for active cooling structures.

[0003] The precision and efficiency of mainstream additive manufacturing processes such as laser powder bed fusion (LPBF) and directed energy deposition (DED) continue to improve. The application of innovative technologies such as multi-laser systems and in-situ monitoring enables the reliable manufacture of complex cooling structures with micron-level features. The deep integration of technologies such as computational fluid dynamics (CFD), topology optimization, and machine learning with additive manufacturing is giving rise to a new generation of intelligent cooling structures. Through simulation-driven generative design, engineers can quickly optimize the topology of cooling channels to maximize heat transfer performance.

[0004] From aerospace to weapons manufacturing, from energy equipment to electronic heat dissipation, the application scenarios of additive manufacturing active cooling structures are constantly expanding. Aerospace giants such as Boeing and Airbus have incorporated additive manufacturing cooling structures into the standard design of next-generation engines. With the development of technologies such as multi-material printing and hybrid manufacturing, additive manufacturing active cooling structures will continue to evolve towards functional integration, structural intelligence, and green manufacturing. This technology is not only redefining the performance limits of thermal management systems, but will also provide key technical support for the efficient use of energy under the "dual carbon" goal.

[0005] When active cooling components (such as the combustion chamber of a solid scramjet engine or gas turbine) operate in high-temperature and high-pressure environments, the materials used to manufacture these components are refractory metals. Refractory metals are prone to oxidation at high temperatures, necessitating the application of a high-temperature anti-oxidation coating to the surface of the active cooling channels. This improves the thermal protection performance and durability of the active cooling components. However, the complex structure of the active cooling channels, with their small apertures and long channels, means that the coating method directly affects the uniformity, adhesion, and thermal shock resistance of the coating. This is one of the key technologies for ensuring the reliable operation of active cooling components.

[0006] Existing examples, such as Chinese invention patent with authorization announcement number "CN114887841B", disclose a device and method for coating the inner wall of a combustion chamber cooling channel. The device includes a stirring tank, a cooling channel, a recovery tank, and a controller. The stirring tank is connected to the cooling channel, and the cooling channel is connected to the recovery tank. The controller is located on one side of the recovery tank. The stirring tank contains a stirring mechanism, which includes a stirring paddle and a stirring motor. The stirring paddle is connected to the stirring motor, and the stirring motor is connected to the controller. A nitrogen inlet is located on the side of the stirring tank away from the stirring mechanism. The stirring tank and the cooling channel... A first valve and a second valve are provided between them. The first valve is connected to the controller, and the second valve is also connected to the controller. However, when using the combustion chamber cooling channel inner wall coating device described in the above technical solution, since the liquid medium in the slurry is anhydrous ethanol, when the gas passes through the stirring tank to dry the cooling channel, it will cause the anhydrous ethanol to evaporate rapidly and flow with the airflow, resulting in the anhydrous ethanol accumulating on the inner wall of the cooling channel to form liquid droplets. This dilutes the slurry on the wall, causing local slurry to flow down, resulting in uneven coating and defects. This affects the thermal protection performance of the active cooling channel, and the coating effect is poor. Summary of the Invention

[0007] In view of this, it is necessary to provide an active cooling channel coating device to improve the coating effect on the active cooling channel; It is also necessary to provide a method for applying an active cooling channel coating.

[0008] On one hand, the present invention provides an active cooling channel coating device, including a gas source component and a coating component, wherein the gas source component is used to fill the coating component with pressurized gas, and the coating component is used to coat the active cooling channel with a coating. The coating assembly includes a pressure vessel tank, a pressure vessel cover, a stirring section, a material conveying section, and a gas conveying section. The lower end of the side wall of the pressure vessel tank has several throttling discharge ports. The upper end of the side wall of the pressure vessel tank has an air port. The pressure vessel cover is fitted over the opening of the pressure vessel tank. One end of the stirring section is connected to the pressure vessel cover, and the other end extends into the pressure vessel tank. The pressure vessel tank and the pressure vessel cover are detachably connected. The output end of the gas source assembly is detachably connected to the air port. The pressure vessel cover supports the other end of the stirring section to stir the slurry in the pressure vessel tank and inject the slurry into the active cooling channel. One end of the material conveying section is detachably connected to several of the throttling discharge ports, and the other end is detachably connected to the bottom of the active cooling channel to inject gas into the active cooling channel. One end of the gas conveying section is detachably connected to the output end of the gas source assembly, and the other end is detachably connected to the bottom or top of the active cooling channel.

[0009] Preferably, the stirring unit includes a stirring motor, a rotating shaft, and a stirring paddle. The stirring motor is located on the pressure vessel cover and is connected to the pressure vessel cover. One end of the rotating shaft is connected to the output end of the stirring motor, and the other end of the rotating shaft passes through the pressure vessel cover and extends into the pressure vessel tank, where it is connected to the stirring paddle. The stirring motor drives the rotating shaft to rotate, and the rotating shaft drives the stirring paddle to rotate. The stirring paddle stirs the slurry in the pressure vessel tank.

[0010] Preferably, the material conveying part is a material conveying pipe, the number of which is the same as the number of throttling discharge ports, one end of each of the material conveying pipes is detachably connected to one of the throttling discharge ports, and the other end of each of the material conveying pipes is detachably connected to the bottom of the active cooling channel.

[0011] Preferably, the gas conveying unit includes a gas channel conversion component and gas conveying pipes. The number of gas conveying pipes is the same as the number of throttling discharge interfaces. One end of the gas channel conversion component is detachably connected to the output end of the gas source component. The other end of the gas channel conversion component is detachably connected to one end of each of the gas conveying pipes. The other ends of each of the gas conveying pipes are detachably connected to the bottom of the active cooling channel.

[0012] Preferably, the air source assembly includes a main compressed air pipeline, a compressed air purifier, a pneumatic triplet, and a pressure regulator. The main compressed air pipeline is connected to the input end of the compressed air purifier, the output end of the compressed air purifier is connected to the input end of the pneumatic triplet via a pipeline, the output end of the pneumatic triplet is connected to the input end of the pressure regulator via a pipeline, and the output end of the pressure regulator is detachably connected to the air interface via a pipeline. The main compressed air pipeline supplies compressed air to the compressed air purifier, which filters and removes impurities from the compressed air. The pneumatic triplet dehumidifies and dries the compressed air, and the pressure regulator regulates the pressure of the compressed air.

[0013] Preferably, the active cooling channel coating device further includes a recovery component for collecting excess slurry flowing out of the active cooling channel. The recovery component includes a recovery pipe and a recovery tank. There are several recovery pipes, one end of which is detachably connected to the top of the active cooling channel, and the other end of which extends into the recovery tank.

[0014] Preferably, the pressure vessel cover is further provided with a pressure relief safety valve, which is used to monitor and release the pressure inside the pressure vessel tank.

[0015] On the other hand, the present invention provides an active cooling channel coating application method, using the active cooling channel coating application device described above, specifically including the following steps. S1: Close several of the throttling outlet ports and inject slurry into the pressure vessel tank, the liquid level of the slurry being lower than that of the air port; S2: Cover the opening of the pressure vessel with the pressure vessel cover to seal the pressure vessel, and support the other end of the stirring part to stir the slurry in the pressure vessel to ensure the uniformity of the slurry during the coating process and prevent the slurry from settling. S3: Connect the output end of the air source component to the air interface, connect one end of the material conveying part to several of the throttling discharge interfaces, and connect the other end of the material conveying part to the bottom of the active cooling channel; S4: The gas source component introduces gas at a first predetermined pressure into the pressure vessel tank, and simultaneously opens several of the throttling discharge ports. Under the action of pressure, the slurry in the pressure vessel tank sequentially enters the active cooling channel through several of the throttling discharge ports and the conveying section to be coated with the channel coating. S5: After observing that the slurry flows out uniformly from the top of the active cooling channel, shut off the gas source assembly to stop filling the pressure vessel tank with gas, and depressurize the pressure vessel tank. Let it stand for a first predetermined time, and use the pressure formed by the conveying part to slowly reduce the pressure, so that the excess slurry in the active cooling channel flows slowly from top to bottom under its own weight, forming a secondary coating on the inner wall of the active cooling channel, so as to achieve uniform slurry. S6: After step S5 is completed, the output end of the air source component is removed from the air interface, and the other end of the material conveying part is removed from the bottom of the active cooling channel and placed into the slurry empty tank to recover the slurry in the pressure vessel tank. At the same time, one end of the gas conveying part is connected to the output end of the air source component, and the other end of the gas conveying part is connected to the bottom or top of the active cooling channel, so that the air source component introduces gas at a second predetermined pressure into the active cooling channel through the gas conveying part, ensuring that the coating slurry on the inner wall of the active cooling channel can dry quickly. S7: After step S6 is completed, remove the pressure vessel cover from the opening of the pressure vessel tank and remove one end of the conveying part from several of the throttling discharge ports. Clean the pressure vessel tank, the pressure vessel cover, the stirring part, and the conveying part respectively to prevent residual slurry from solidifying and forming slurry particles that will affect the next use.

[0016] Preferably, step S3 further includes connecting one end of each of the several recovery pipes to the top of the active cooling channel, and extending the other end of each of the several recovery pipes into the recovery tank, so that the slurry overflowing from the top of the active cooling channel flows back into the recovery tank.

[0017] Preferably, step S6 specifically includes: S61: After step S5 is completed, the output end of the air source component is removed from the air interface, and the other end of the material conveying part is removed from the bottom of the active cooling channel and placed into the slurry empty tank to recover the slurry in the pressure vessel tank. S62: Connect one end of the gas supply section to the output end of the gas source assembly, and connect the other end of the gas supply section to the bottom of the active cooling channel, so that the gas source assembly introduces gas at a second predetermined pressure into the active cooling channel through the gas supply section. The gas at the second predetermined pressure fills the active cooling channel 20 from bottom to top and maintains it for a second predetermined time for preliminary drying. S63: After step S62 is completed, the other end of the gas supply unit is connected to the top of the active cooling channel so that the gas at the second predetermined pressure fills the active cooling channel from top to bottom and maintains it for a third predetermined time for secondary drying.

[0018] As can be seen from the above technical solution, the active cooling channel coating device provided by the present invention includes a gas source component and a coating component. The gas source component is used to fill the coating component with pressurized gas, and the coating component is used to coat the active cooling channel with a coating. The coating component includes a pressure vessel tank, a pressure vessel cover, a stirring section, a material conveying section, and a gas conveying section. The lower end of the side wall of the pressure vessel tank has several throttling discharge ports, and the upper end of the side wall of the pressure vessel tank has an air port. The pressure vessel cover is fitted onto the opening of the pressure vessel tank, and one end of the stirring section... The other end of the stirring part is connected to the pressure vessel cover and extends into the pressure vessel tank. The pressure vessel tank and the pressure vessel cover are detachably connected. The output end of the air source component is detachably connected to the air interface. The pressure vessel cover supports the other end of the stirring part to stir the slurry in the pressure vessel tank. One end of the conveying part is detachably connected to several throttling discharge interfaces. The other end of the conveying part is detachably connected to the bottom of the active cooling channel. One end of the air conveying part is detachably connected to the output end of the air source component. The other end of the air conveying part is detachably connected to the bottom or top of the active cooling channel. When injecting slurry into the active cooling channel for coating, one end of the conveying unit is connected to several throttling discharge ports, and the other end is connected to the bottom of the active cooling channel. When injecting gas into the active cooling channel for drying, one end of the gas conveying unit is connected to the output end of the gas source component, and the other end is connected to the bottom or top of the active cooling channel. This allows the gas output from the gas source component to be directly injected into the active cooling channel, avoiding the situation where the gas output from the gas source component passes through a pressure vessel and is injected into the active cooling channel. In this case, the gas would carry the anhydrous ethanol in the slurry to evaporate rapidly and move with the airflow, causing the anhydrous ethanol to accumulate on the inner wall of the cooling channel and form droplets, thereby diluting the slurry on the wall and causing local slurry to flow downwards. This design allows for uneven coating and defects. The material conveying section and gas conveying section can be used independently during material and gas conveying processes, preventing cross-contamination. It also facilitates the removal of the mixing and material conveying sections from the pressure vessel for thorough cleaning to prevent residual slurry from hardening and affecting subsequent use. Furthermore, the gas conveying section allows for initial drying of the bottom of the active cooling channel by inflating it, followed by secondary drying of the top. This ensures the slurry coating is applied more quickly to the inner wall of the active cooling channel, preventing slurry buildup due to prolonged coating time and improving the coating effect. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the active cooling channel coating device in its first working state.

[0021] Figure 2 This is a schematic diagram of the second working state of the active cooling channel coating device.

[0022] Figure 3 This is a schematic diagram of the coating component.

[0023] Figure 4 A flowchart of the active cooling channel coating method.

[0024] In the figure: Active cooling channel coating device 10, air source assembly 110, compressed air main pipeline 111, compressed air purifier 112, pneumatic triplet 113, air pressure regulator 114, coating assembly 120, pressure vessel tank 121, throttling discharge port 1211, air port 1212, pressure vessel cover 122, pressure relief safety valve 1221, stirring unit 123, stirring motor 1231, rotating shaft 1232, stirring paddle 1233, material conveying unit 124, air conveying unit 125, gas channel conversion component 1251, air conveying pipe 1252, recovery assembly 126, recovery pipe 1261, recovery tank 1262, active cooling channel 20. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] In the description of this invention, it should be understood that the terms "upper", "middle", "outer", "inner", "lower", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0027] On one hand, the present invention provides an active cooling channel 20 coating device 10, including a gas source component 110 and a coating component 120. The gas source component 110 is used to fill the coating component 120 with pressurized gas, and the coating component 120 is used to coat the active cooling channel 20 with a coating. The coating component 120 includes a pressure vessel tank 121, a pressure vessel cover 122, a stirring section 123, a material conveying section 124, and a gas conveying section 125. The lower end of the side wall of the pressure vessel tank 121 has a throttling discharge port 1211, and there are three throttling discharge ports 1211. The upper end of the side wall of the pressure vessel tank 121 has an air port 1212. The pressure vessel cover 122 covers the opening of the pressure vessel tank 121. The stirring section... One end of the stirring part 123 is connected to the pressure vessel cover 122, and the other end of the stirring part 123 extends into the pressure vessel tank 121. The pressure vessel tank 121 and the pressure vessel cover 122 are detachably connected. The output end of the air source component 110 is detachably connected to the air interface 1212. The pressure vessel cover 122 supports the other end of the stirring part 123 to stir the slurry in the pressure vessel tank 121. One end of the conveying part 124 is detachably connected to the three throttling discharge interfaces 1211. The other end of the conveying part 124 is detachably connected to the bottom of the active cooling channel 20. One end of the air conveying part 125 is detachably connected to the output end of the air source component 110. The other end of the air conveying part 125 is detachably connected to the bottom or top of the active cooling channel 20. When injecting the slurry into the active cooling channel 20 for coating, please refer to... Figure 1 One end of the conveying section 124 is connected to three throttling discharge ports 1211, and the other end of the conveying section 124 is connected to the bottom of the active cooling channel 20. When injecting gas into the active cooling channel 20 for drying, please refer to... Figure 2 One end of the gas conveying unit 125 is connected to the output end of the gas source assembly 110, and the other end is connected to the bottom or top of the active cooling channel 20. This allows the gas output from the gas source assembly 110 to be directly introduced into the active cooling channel 20. This avoids the situation where, when the gas output from the gas source assembly 110 passes through the pressure vessel 121 and is introduced into the active cooling channel 20, the gas would cause the anhydrous ethanol in the slurry to evaporate rapidly and move with the airflow. This would prevent the coating slurry in the active cooling channel 20 from drying quickly, or even cause the slurry surface to form droplets due to excessively high anhydrous ethanol concentration, diluting the slurry on the wall and causing localized slurry flow defects. Furthermore, the material conveying unit 124 and the gas conveying unit 125 can be used independently during material and gas conveying processes. Please refer to [link / reference needed]. Figure 3This avoids cross-contamination between the two components and facilitates the removal of the mixing unit 123 and the conveying unit 124 from the pressure vessel tank 121 for thorough cleaning, preventing residual slurry from solidifying and affecting subsequent use. The air conveying unit 125 can inflate the bottom of the active cooling channel 20 for initial drying and then inflate the top of the active cooling channel 20 for secondary drying, ensuring that the slurry coating can be applied to the inner wall of the active cooling channel 20 more quickly. This prevents the slurry coating from flowing down to the inner wall of the active cooling channel 20 due to excessive coating time, thus improving the coating effect on the active cooling channel 20.

[0028] Furthermore, the stirring unit 123 includes a stirring motor 1231, a rotating shaft 1232, and a stirring paddle 1233. The stirring motor 1231 is located on the pressure vessel cover 122 and is connected to the pressure vessel cover 122. One end of the rotating shaft 1232 is connected to the output end of the stirring motor 1231, and the other end of the rotating shaft 1232 passes through the pressure vessel cover 122 and extends into the pressure vessel tank 121, where it is connected to the stirring paddle 1233. The stirring motor 1231 drives the rotating shaft 1232 to rotate, and the rotating shaft 1232 drives the stirring paddle 1233 to rotate. The stirring paddle 1233 stirs the slurry in the pressure vessel tank 121, thereby preventing the slurry from seeping into the connection between the stirring motor 1231 and the stirring paddle 1233 and forming a dry knot that could cause the stirring motor 1231 to jam.

[0029] Furthermore, the material conveying section 124 is a material conveying pipe, the number of which is the same as the throttling discharge interface 1211. One end of each of the three material conveying pipes is detachably connected to the three throttling discharge interfaces 1211, and the other end of each of the three material conveying pipes is detachably connected to the bottom of the active cooling channel 20.

[0030] Furthermore, the gas delivery unit 125 includes a gas channel conversion component 1251 and gas delivery pipes 1252. The number of gas delivery pipes 1252 is the same as that of the throttling discharge interface 1211. One end of the gas channel conversion component 1251 is detachably connected to the output end of the gas source component 110. The other end of the gas channel conversion component 1251 is detachably connected to one end of each of the three gas delivery pipes 1252. The other ends of each of the three gas delivery pipes 1252 are detachably connected to the bottom or top of the active cooling channel 20.

[0031] Furthermore, the air source assembly 110 includes a compressed air main pipe 111, a compressed air purifier 112, a pneumatic triplet 113, and a pressure regulator 114. The compressed air main pipe 111 is connected to the input end of the compressed air purifier 112. The output end of the compressed air purifier 112 is connected to the input end of the pneumatic triplet 113 through a pipe. The output end of the pneumatic triplet 113 is connected to the input end of the pressure regulator 114 through a pipe. The output end of the pressure regulator 114 is detachably connected to the air interface 1212 through a pipe. The compressed air main pipe 111 introduces compressed air into the compressed air purifier 112. The compressed air purifier 112 is used to filter and remove impurities from the compressed air. The pneumatic triplet 113 is used to dehumidify and dry the compressed air. The pressure regulator 114 is used to regulate the pressure of the compressed air.

[0032] Furthermore, the active cooling channel coating device 10 also includes a recovery component 126, which is used to collect excess slurry flowing out of the active cooling channel 20. The recovery component 126 includes a recovery pipe 1261 and a recovery tank 1262. There are three recovery pipes 1261. One end of each of the three recovery pipes 1261 is detachably connected to the top of the active cooling channel 20, and the other end of each of the three recovery pipes 1261 extends into the recovery tank 1262.

[0033] Furthermore, a pressure relief safety valve 1221 is also provided on the pressure vessel cover 122. The pressure relief safety valve 1222 is used to monitor and release the pressure inside the pressure vessel tank 121. When the pressure relief safety valve 1222 detects that the pressure inside the pressure vessel tank 121 reaches the safety threshold, the pressure relief safety valve 1222 releases pressure from the pressure vessel tank 121.

[0034] In this application, the air interface 1211 can be a pneumatic quick-connect interface, and the bottom and top of the active cooling channel 20 also have pneumatic quick-connect interfaces. The throttling discharge interface 1211 can be a throttling valve. The output end of the air source component 110, both ends of the material conveying pipe, and both ends of the air conveying pipe 1252 all have pneumatic quick-connect connectors. The gas channel conversion component 1251 can be a pneumatic quick-connect four-way connector. The pneumatic quick-connect interface and the connecting pipe can be connected or disassembled by a simple push-in or pull-out action, which greatly saves installation time and realizes the connection of related passages.

[0035] On the other hand, please see Figure 4 The active cooling channel coating method provided by the present invention, using the active cooling channel coating device 10 described above, specifically includes the following steps: S1: Close the three throttling discharge ports 1211 and inject slurry into the pressure vessel tank 121. The liquid level of the slurry should be lower than the air port 1212. S2: Cover the pressure vessel lid 122 over the opening of the pressure vessel tank 121 to seal the pressure vessel tank 121, and support the other end of the stirring part 123 to stir the slurry in the pressure vessel tank 121 to ensure the uniformity of the slurry during the coating process and prevent the slurry from settling. S3: Connect the output end of the air source assembly 110 to the air interface 1212, and connect one end of the material conveying part 124 to the three throttling discharge interfaces 1211, and connect the other end of the material conveying part 124 to the bottom of the active cooling channel 20. S4: The gas source assembly 110 introduces gas at a first predetermined pressure into the pressure vessel tank 121, and at the same time opens the three throttling discharge ports 1211. Under the action of pressure, the slurry in the pressure vessel tank 121 enters the active cooling channel 20 through the three throttling discharge ports 1211 and the conveying part 124 in sequence to coat the channel coating. S5: After observing that the slurry flows out uniformly from the top of the active cooling channel 20, turn off the gas source assembly 110 to stop filling the pressure vessel tank 121 with gas, and depressurize the pressure vessel tank 121. Let it stand for a first predetermined time, and use the pressure formed by the conveying part 124 to slowly reduce the pressure, so that the excess slurry in the active cooling channel 20 flows slowly from top to bottom under its own weight, forming a secondary coating on the inner wall of the active cooling channel 20, so as to achieve uniform slurry. S6: After step S5 is completed, the output end of the air source component 110 is removed from the air interface 1212, and the other end of the material conveying part 124 is removed from the bottom of the active cooling channel 20 and placed into the slurry empty tank to recover the slurry in the pressure vessel tank 121. At the same time, one end of the gas conveying part 125 is connected to the output end of the air source component 110, and the other end of the gas conveying part 125 is connected to the bottom or top of the active cooling channel 20, so that the air source component 110 introduces gas at a second predetermined pressure into the active cooling channel 20 through the gas conveying part 125, ensuring that the coating slurry on the inner wall of the active cooling channel 20 can be dried quickly. S7: After step S6 is completed, remove the pressure vessel cover 122 from the opening of the pressure vessel tank 121 and remove one end of the conveying part 124 from the three throttling discharge ports 1211. Clean the pressure vessel tank 121, pressure vessel cover 122, stirring part 123 and conveying part 124 respectively to prevent residual slurry from solidifying and forming slurry particles that will affect the next use.

[0036] Furthermore, in order to prevent excessive slurry overflow from the top of the active cooling channel 20 and cause contamination, step S3 also includes connecting one end of each of the three recovery pipes 1261 to the top of the active cooling channel 20 and extending the other end of each of the three recovery pipes 1261 into the recovery tank 1262, so that the slurry overflowing from the top of the active cooling channel 20 flows back into the recovery tank 1262.

[0037] Furthermore, in order to shorten the initial settling time and prevent excess slurry from remaining in the active cooling channel 20, step S5 specifically involves: S51: After observing that the slurry flows out uniformly from the three recovery pipes 1261, turn off the air pressure regulating controller 114 to stop filling the pressure vessel tank 121 with gas, and remove the three recovery pipes 1261 from the top of the active cooling channel 20. S52: Open the pressure relief safety valve 1222 to relieve pressure on the pressure vessel tank 121. At the same time, ensure that the bottom height of the active cooling channel 20 is higher than the slurry surface in the pressure vessel tank 121 to create a height potential energy difference. Allow it to stand for a first predetermined time for initial solidification. During the standing process, the pressure in the pressure vessel tank 121 gradually decreases. The pressure drop formed by the conveying pipe causes the excess slurry in the active cooling channel 20 to flow slowly from top to bottom under its own weight, forming a secondary coating on the inner wall of the active cooling channel 20. This achieves uniform slurry distribution and prevents the slurry at the upper end of the active cooling channel 20 from falling rapidly, which would cause uneven coating. It also prevents excess slurry in the three recovery pipes 1261 from flowing back into the active cooling channel 20.

[0038] Furthermore, in order to ensure rapid drying of the active cooling channel 20, step S6 specifically involves: S61: After step S5 is completed, the output end of the air source component 110 is removed from the air interface 1212, and the other end of the material conveying part 124 is removed from the bottom of the active cooling channel 20 and placed into the slurry empty tank to recover the slurry in the pressure vessel tank 121. S62: Connect one end of the gas supply section 125 to the output end of the gas source assembly 110, and connect the other end of the gas supply section 125 to the bottom of the active cooling channel 20, so that the gas source assembly 110 introduces gas at a second predetermined pressure into the active cooling channel 20 through the gas supply section 125, and the gas at the second predetermined pressure fills the active cooling channel 20 from bottom to top and maintains it for a second predetermined time for preliminary drying. S63: After step S62 is completed, the other end of the gas supply unit 125 is connected to the top of the active cooling channel 20 so that the gas at the second predetermined pressure is supplied from top to bottom to inflate the active cooling channel 20 and maintain it for a third predetermined time for secondary drying. This ensures that the slurry coating can be coated on the inner wall of the active cooling channel 20 more quickly, and prevents the slurry coating from flowing down onto the inner wall of the active cooling channel 20 due to excessive coating time, thus preventing the slurry from sticking to the wall.

[0039] The working principle of this invention is as follows: First, close the three throttling outlet ports 1211 and inject slurry into the pressure vessel tank 121. The liquid level of the slurry should be lower than the air port 1212. Then, cover the pressure vessel cover 122 on the opening of the pressure vessel tank 121 to seal the pressure vessel tank 121. Start the stirring motor 1231, and the rotating shaft 1232 drives the stirring paddle 1233 to rotate. The stirring paddle 1233 stirs the slurry in the pressure vessel tank 121 to ensure the uniformity of the slurry during the coating process and to prevent the slurry from settling. After the slurry has been stirred for 2 minutes, connect the output end of the air source component 110 to the air interface 1212, and connect one end of each of the three conveying pipes to the three throttling discharge interfaces 1211. Connect the other ends of the three conveying pipes to the bottom of the active cooling channel 20, and connect one end of each of the three recovery pipes 1261 to the top of the active cooling channel 20. The other ends of the three recovery pipes 1261 extend into the recovery tank 1262. Compressed air is introduced into the compressed air purifier 112 through the main compressed air pipeline 111. 112 filters and removes impurities from the compressed air, and the pneumatic triplet 113 dehumidifies and dries the compressed air. After the compressed air pressure is adjusted to the first predetermined pressure (0.05 MPa) by the air pressure regulating controller 114, the gas at the first predetermined pressure is introduced into the pressure vessel tank 121. At the same time, the three throttling discharge ports 1211 are opened. Under the action of pressure, the slurry in the pressure vessel tank 121 enters the active cooling channel 20 through the three throttling discharge ports 1211 and the conveying pipe in sequence for channel coating. After observing that the slurry flows out uniformly from the three recovery pipes 1261, turn off the air pressure regulator 114 to stop filling the pressure vessel tank 121 with gas, remove the three recovery pipes 1261 from the top of the active cooling channel 20, open the pressure relief safety valve 1222 to release the pressure of the pressure vessel tank 121, and at the same time ensure that the bottom height of the active cooling channel 20 is higher than the slurry liquid surface in the pressure vessel tank 121 to generate a height potential energy difference. Let it stand for a first predetermined time (3 minutes) to carry out preliminary solidification. During the standing process, the pressure in the pressure vessel tank 121 gradually decreases. The pressure drop formed by the conveying pipe causes the excess slurry in the active cooling channel 20 to flow slowly from top to bottom under its own weight, forming a secondary coating on the inner wall of the active cooling channel 20, achieving uniform slurry, preventing the slurry at the top of the active cooling channel 20 from falling rapidly and causing uneven coating, and preventing the excess slurry in the three recovery pipes 1261 from flowing back into the active cooling channel 20. After settling, excess slurry in the active cooling channel 20 will completely flow back into the pressure vessel tank 121. Then, the output end of the air source assembly 110 is removed from the air interface 1212, and the other end of the feed pipe is removed from the bottom of the active cooling channel 20 and placed into the empty slurry tank to recover the slurry in the pressure vessel tank 121. At the same time, one end of the gas channel conversion component 1251 is connected to the output end of the air source assembly 110, and the other end of the gas channel conversion component 1251 is connected to one end of each of the three air supply pipes 1252. The other ends of the three air supply pipes 1252 are first connected to the bottom of the active cooling channel 20. The air pressure regulating controller 114 is turned on to adjust the pressure of the compressed air to the second pre-pressurized level. After the pressure is set to 0.02 MPa, the gas at the second predetermined pressure (0.02 MPa) is introduced from bottom to top into the active cooling channel 20 and maintained for a second predetermined time (7 minutes) for initial drying. Then, the other ends of the three gas supply pipes 1252 are connected to the top of the active cooling channel 20, and the gas at the second predetermined pressure (0.02 MPa) is introduced from top to bottom into the top of the active cooling channel 20 and maintained for a third predetermined time (3 minutes) for secondary drying. This ensures that the slurry coating can be applied to the inner wall of the active cooling channel 20 more quickly, and prevents the slurry coating from flowing down to the inner wall of the active cooling channel 20 and causing slurry to stick to the wall due to excessive coating time. After the secondary drying is completed, remove the pressure vessel cover 122 from the opening of the pressure vessel tank 121 and remove the conveying pipe from the three throttling discharge ports 1211. Clean the pressure vessel tank 121, pressure vessel cover 122, stirring motor 1231, rotating shaft 1232, stirring paddle 1233, and conveying pipe to prevent residual slurry from solidifying and forming slurry particles that will affect the next use.

[0040] The above-disclosed embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the invention. Those skilled in the art will understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A method for applying an active cooling channel coating, the method using an active cooling channel coating apparatus, characterized in that, The active cooling channel coating device includes a gas source component and a coating component. The gas source component is used to fill the coating component with pressurized gas, and the coating component is used to coat the active cooling channel with a coating. The coating assembly includes a pressure vessel tank, a pressure vessel cover, a stirring section, a material conveying section, and a gas conveying section. The lower end of the side wall of the pressure vessel tank has several throttling discharge ports. The upper end of the side wall of the pressure vessel tank has an air port. The pressure vessel cover is fitted over the opening of the pressure vessel tank. One end of the stirring section is connected to the pressure vessel cover, and the other end extends into the pressure vessel tank. The pressure vessel tank and the pressure vessel cover are detachably connected. The output end of the gas source assembly is detachably connected to the air port. The pressure vessel cover supports the other end of the stirring section to stir the slurry in the pressure vessel tank and inject the slurry into the active cooling channel. One end of the material conveying section is detachably connected to several of the throttling discharge ports, and the other end is detachably connected to the bottom of the active cooling channel to inject gas into the active cooling channel. One end of the gas conveying section is detachably connected to the output end of the gas source assembly, and the other end is detachably connected to the bottom or top of the active cooling channel. The active cooling channel coating application method specifically includes the following steps: S1: Close several of the throttling outlet ports and inject slurry into the pressure vessel tank, the liquid level of the slurry being lower than that of the air port; S2: Cover the opening of the pressure vessel with the pressure vessel cover to seal the pressure vessel, and support the other end of the stirring part to stir the slurry in the pressure vessel to ensure the uniformity of the slurry during the coating process and prevent the slurry from settling. S3: Connect the output end of the air source component to the air interface, connect one end of the material conveying part to several of the throttling discharge interfaces, and connect the other end of the material conveying part to the bottom of the active cooling channel; S4: The gas source component introduces gas at a first predetermined pressure into the pressure vessel tank, and simultaneously opens several of the throttling discharge ports. Under the action of pressure, the slurry in the pressure vessel tank sequentially enters the active cooling channel through several of the throttling discharge ports and the conveying section to be coated with the channel coating. S5: After observing that the slurry flows out uniformly from the top of the active cooling channel, shut off the gas source assembly to stop filling the pressure vessel tank with gas, and depressurize the pressure vessel tank. Let it stand for a first predetermined time, and use the pressure formed by the conveying part to slowly reduce the pressure, so that the excess slurry in the active cooling channel flows slowly from top to bottom under its own weight, forming a secondary coating on the inner wall of the active cooling channel, so as to achieve uniform slurry. S6: After step S5 is completed, the output end of the air source component is removed from the air interface, and the other end of the material conveying part is removed from the bottom of the active cooling channel and placed into the slurry empty tank to recover the slurry in the pressure vessel tank. At the same time, one end of the gas conveying part is connected to the output end of the air source component, and the other end of the gas conveying part is connected to the bottom or top of the active cooling channel, so that the air source component introduces gas at a second predetermined pressure into the active cooling channel through the gas conveying part, ensuring that the coating slurry on the inner wall of the active cooling channel can dry quickly. S7: After step S6 is completed, remove the pressure vessel cover from the opening of the pressure vessel tank and remove one end of the conveying part from several of the throttling discharge ports. Clean the pressure vessel tank, the pressure vessel cover, the stirring part, and the conveying part respectively to prevent residual slurry from solidifying and forming slurry particles that will affect the next use.

2. The active cooling channel coating method according to claim 1, characterized in that, The stirring unit includes a stirring motor, a rotating shaft, and a stirring paddle. The stirring motor is located on the pressure vessel cover and is connected to the pressure vessel cover. One end of the rotating shaft is connected to the output end of the stirring motor, and the other end of the rotating shaft passes through the pressure vessel cover and extends into the pressure vessel tank, where it is connected to the stirring paddle. The stirring motor drives the rotating shaft to rotate, and the rotating shaft drives the stirring paddle to rotate. The stirring paddle stirs the slurry in the pressure vessel tank.

3. The active cooling channel coating method according to claim 1, characterized in that, The material conveying section is a material conveying pipe. The number of material conveying pipes is the same as the number of throttling discharge ports. One end of each of the material conveying pipes is detachably connected to one of the throttling discharge ports, and the other end of each of the material conveying pipes is detachably connected to the bottom of the active cooling channel.

4. The active cooling channel coating method according to claim 1, characterized in that, The gas delivery unit includes a gas channel conversion component and gas delivery pipes. The number of gas delivery pipes is the same as the number of throttling discharge interfaces. One end of the gas channel conversion component is detachably connected to the output end of the gas source component. The other end of the gas channel conversion component is detachably connected to one end of each of the gas delivery pipes. The other ends of each of the gas delivery pipes are detachably connected to the bottom of the active cooling channel.

5. The active cooling channel coating method according to claim 1, characterized in that, The air source assembly includes a main compressed air pipeline, a compressed air purifier, a pneumatic triplet, and a pressure regulator. The main compressed air pipeline is connected to the input end of the compressed air purifier. The output end of the compressed air purifier is connected to the input end of the pneumatic triplet via a pipeline. The output end of the pneumatic triplet is connected to the input end of the pressure regulator via a pipeline. The output end of the pressure regulator is detachably connected to the air interface via a pipeline. Compressed air is introduced into the compressed air purifier through the main compressed air pipeline. The compressed air purifier is used to filter and remove impurities from the compressed air. The pneumatic triplet is used to dehumidify and dry the compressed air. The pressure regulator is used to regulate the pressure of the compressed air.

6. The active cooling channel coating method according to claim 1, characterized in that, The active cooling channel coating device also includes a recovery component for collecting excess slurry flowing out of the active cooling channel. The recovery component includes a recovery pipe and a recovery tank. There are several recovery pipes, one end of which is detachably connected to the top of the active cooling channel, and the other end of which extends into the recovery tank.

7. The active cooling channel coating method according to claim 1, characterized in that, The pressure vessel cover is also equipped with a pressure relief safety valve, which is used to monitor and release the pressure inside the pressure vessel tank.

8. The active cooling channel coating method according to claim 6, characterized in that, Step S3 further includes connecting one end of each of the several recovery pipes to the top of the active cooling channel and extending the other end of each of the several recovery pipes into the recovery tank, so that the slurry overflowing from the top of the active cooling channel flows back into the recovery tank.

9. The active cooling channel coating method according to claim 1, characterized in that, Step S6 is as follows: S61: After step S5 is completed, the output end of the air source component is removed from the air interface, and the other end of the material conveying part is removed from the bottom of the active cooling channel and placed into the slurry empty tank to recover the slurry in the pressure vessel tank. S62: Connect one end of the gas supply section to the output end of the gas source assembly, and connect the other end of the gas supply section to the bottom of the active cooling channel, so that the gas source assembly introduces gas at a second predetermined pressure into the active cooling channel through the gas supply section. The gas at the second predetermined pressure fills the active cooling channel 20 from bottom to top and maintains it for a second predetermined time for preliminary drying. S63: After step S62 is completed, the other end of the gas supply unit is connected to the top of the active cooling channel so that the gas at the second predetermined pressure fills the active cooling channel from top to bottom and maintains it for a third predetermined time for secondary drying.

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