Device and method for coating active cooling runner coating

Abstract

The invention provides an active cooling flow channel coating coating device and method, and belongs to the technical field of flow channel coating coating.The active cooling flow channel coating coating device comprises a gas source assembly and a coating assembly, the gas source assembly is used for filling pressure gas into the coating assembly, and the coating assembly is used for filling the pressure gas into the coating assembly; the coating assembly comprises a pressure container tank, a pressure container cover, a stirring part, a material conveying part and an air conveying part, a plurality of throttling discharging ports are formed in the lower end of the side wall of the pressure container tank, an air port is formed in the upper end of the side wall of the pressure container tank, one end of the stirring part is connected with the pressure container cover, and the other end of the stirring part extends into the pressure container tank; the output end of the air source assembly is detachably connected with the air connector, one end of the material conveying part is detachably connected with the throttling discharging connector, the other end of the material conveying part is detachably connected with the bottom of the active cooling flow channel, and one end of the air conveying part is detachably connected with the output end of the air source assembly. And the other end of the gas transmission part is detachably connected with the bottom or the top of the active cooling flow channel.

Description

Technical Field

[0001] The present invention relates to the technical field of runner coating, and particularly to an active cooling runner coating device and method. Background Art

[0002] With the increasing demand for high-efficiency cooling technologies in high-end manufacturing fields such as aerospace and energy power, additive manufacturing (AM) technology is bringing revolutionary changes to the design and manufacturing of active cooling structural components. In recent years, this cross-field has shown a rapid development trend, mainly reflected in that additive manufacturing gets rid of the limitations of traditional subtractive manufacturing processes, making the design of complex internal runner structures possible. Engineers can break through traditional thinking and design components with innovative cooling structures such as fractal structures, spiral channels, and porous media, significantly improving the cooling efficiency. Institutions such as NASA have successfully applied additive manufacturing cooling structures to rocket engine nozzles, increasing the cooling efficiency by more than 40%. From traditional nickel-based superalloys to new refractory superalloy materials, the types of materials that can be processed by additive manufacturing technology are constantly enriched. Especially for special alloys developed for extreme working environments, such as tantalum-niobium-based alloys with high temperature resistance, they provide better material choices for active cooling structural components.

[0003] The accuracy 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 manufacturing 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 birth to a new generation of intelligent cooling structures. Through simulation-driven generative design, engineers can quickly optimize the topological structure of cooling runners to maximize heat transfer performance.

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

[0005] When an active cooling structural component (such as a solid scramjet engine or a gas turbine combustion chamber) operates in a high-temperature and high-pressure environment, since the material used to manufacture the active cooling structural component is a refractory metal, the refractory metal is prone to oxidation in a high-temperature environment. As a result, the active cooling structural component needs to be coated with a high-temperature oxidation-resistant coating on the surface of its internal active cooling flow channels, thereby improving the thermal protection performance and durability of the active cooling structural component. However, the active cooling flow channel has a complex structure, small pore diameter, and long flow path, resulting in the coating method of the flow channel coating directly affecting the uniformity, adhesion, and thermal shock resistance of the coating, which is one of the key technologies to ensure the reliable operation of the active cooling structural component.

[0006] Existing ones, such as the Chinese invention patent with the authorization announcement number "CN114887841B", discloses a coating device and method for 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, the cooling channel is connected to the recovery tank, and the controller is arranged on one side of the recovery tank; a stirring mechanism is arranged in the stirring tank, the stirring mechanism 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 interface is arranged on one side of the stirring tank away from the stirring mechanism; a first valve and a second valve are arranged between the stirring tank and the cooling channel, the first valve is connected to the controller, and the second valve is connected to the controller. However, when coating with the coating device for the inner wall of the combustion chamber cooling channel described in the above technical solution, since the liquid medium in the slurry is anhydrous ethanol, when the gas dries the cooling channel through the stirring tank, it will drive the rapid volatilization of anhydrous ethanol and flow with the air flow, resulting in the aggregation of anhydrous ethanol to form liquid beads on the inner wall of the cooling channel, thereby diluting the slurry on the wall and causing the local slurry to flow down, resulting in an uneven coating and forming defects, thus affecting the thermal protection performance of the active cooling flow channel and having a poor coating effect. Summary of the Invention

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

[0008] On the one hand, a coating device for an active cooling flow channel coating provided by the present invention includes a gas source assembly and a coating assembly. The gas source assembly is used to fill the coating assembly with pressurized gas, and the coating assembly is used to coat the active cooling flow channel with a coating; The coating assembly includes a pressure vessel tank, 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 tank has a throttling discharge interface, and the number of the throttling discharge interfaces is several. The upper end of the side wall of the pressure vessel tank has an air interface. The pressure vessel cover covers the opening of the pressure vessel tank. 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 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 interface. The pressure vessel cover supports the other end of the stirring part to stir the slurry in the pressure vessel tank and inject the slurry into the active cooling channel. One end of the material conveying part is detachably connected to several of the throttling discharge interfaces, and the other end of the material conveying part 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 part is detachably connected to the output end of the gas source assembly, and the other end of the gas conveying part is detachably connected to the bottom or the top of the active cooling channel.

[0009] Preferably, the stirring part 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 to be connected to the stirring paddle. The stirring motor drives the rotating shaft to rotate, the rotating shaft drives the stirring paddle to rotate, and the stirring paddle stirs the slurry in the pressure vessel tank.

[0010] Preferably, the material conveying part is a material conveying pipe, and the number of the material conveying pipes is the same as that of the throttling discharge interfaces. One ends of several of the material conveying pipes are respectively detachably connected to several of the throttling discharge interfaces, and the other ends of several of the material conveying pipes are all detachably connected to the bottom of the active cooling channel.

[0011] Preferably, the gas conveying part includes a gas channel conversion part and a gas conveying pipe, and the number of the gas conveying pipes is the same as that of the throttling discharge interfaces. One end of the gas channel conversion part is detachably connected to the output end of the gas source assembly, and the other end of the gas channel conversion part is detachably connected to one ends of several of the gas conveying pipes. The other ends of several of the gas conveying pipes are all 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 triple unit, and a pressure adjustment controller. 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 triple unit through a pipeline. The output end of the pneumatic triple unit is connected to the input end of the pressure adjustment controller through a pipeline. The output end of the pressure adjustment controller is detachably connected to the air interface through a pipeline. The main compressed air pipeline feeds compressed air into the compressed air purifier. The compressed air purifier is used to filter and remove impurities from the compressed air. The pneumatic triple unit is used to dehumidify and dry the compressed air. The pressure adjustment controller is used to adjust the pressure of the compressed air.

[0013] Preferably, the active cooling channel coating application device further includes a recovery assembly. The recovery assembly is used to collect the excess slurry flowing out of the active cooling channel. The recovery assembly includes a recovery pipe and a recovery tank. There are several recovery pipes. One end of each of the several recovery pipes is detachably connected to the top of the active cooling channel. The other end of each of the several recovery pipes extends into the recovery tank.

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

[0015] On the other hand, an active cooling channel coating application method provided by the present invention uses the active cooling channel coating application device described in the above aspect, and specifically includes the following steps. S1: Close several of the throttle discharge interfaces, and inject slurry into the pressure vessel tank. The liquid level height of the slurry should be lower than the air interface. S2: Cover the pressure vessel cover on the opening of the pressure vessel tank to seal the pressure vessel tank, and support the other end of the stirring part to stir the slurry in the pressure vessel tank to ensure the uniformity of the slurry during the coating application process and avoid sedimentation of the slurry. S3: Connect the output end of the air source assembly to the air interface, and connect one end of the material conveying part to several of the throttle discharge interfaces, and the other end of the material conveying part to the bottom of the active cooling channel. S4: The air source assembly feeds gas with a first predetermined pressure into the pressure vessel tank, and at the same time opens several of the throttle discharge interfaces. Under the action of the pressure, the slurry in the pressure vessel tank sequentially passes through several of the throttle discharge interfaces, the material conveying part and enters the active cooling channel for flow channel coating application. S5: After observing that the slurry uniformly flows out from the top of the active cooling channel, close the gas source assembly to stop filling gas into the pressure vessel tank, relieve the pressure of the pressure vessel tank, and stand still for a first predetermined time. Utilize the pressure drop formed by the material conveying part to enable the excess slurry in the active cooling channel to slowly flow downwards under its own weight, forming a secondary coating on the inner wall of the active cooling channel to achieve uniform slurry; S6: After step S5 is completed, remove the output end of the gas source assembly from the air interface, remove the other end of the material conveying part from the bottom of the active cooling channel and place it in an empty slurry bucket to recover the slurry in the pressure vessel tank. At the same time, connect one end of the gas conveying part to the output end of the gas source assembly, and connect the other end of the gas conveying part to the bottom or top of the active cooling channel, so that the gas source assembly passes the gas conveying part to introduce gas with a second predetermined pressure into the active cooling channel to ensure that the coating slurry on the inner wall surface of the active cooling channel can be quickly dried; 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 material conveying part from several throttle discharge interfaces, and clean the pressure vessel tank, the pressure vessel cover, the stirring part, and the material conveying part respectively to prevent the residual slurry from solidifying to form slurry particles and affecting the next use.

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

[0017] Preferably, step S6 is specifically: S61: After step S5 is completed, remove the output end of the gas source assembly from the air interface, remove the other end of the material conveying part from the bottom of the active cooling channel and place it in an empty slurry bucket to recover the slurry in the pressure vessel tank; S62: Connect one end of the gas conveying part to the output end of the gas source assembly, and connect the other end of the gas conveying part to the bottom of the active cooling channel first, so that the gas source assembly passes the gas conveying part to introduce gas with a second predetermined pressure into the active cooling channel. The gas with the second predetermined pressure fills the active cooling channel 20 from bottom to top and maintains for a second predetermined time for preliminary drying; S63: After step S62 is completed, connect the other end of the gas conveying part to the top of the active cooling channel, so that the gas with the second predetermined pressure fills the active cooling channel from top to bottom and maintains for a third predetermined time for secondary drying.

[0018] As can be seen from the above technical solutions, an active cooling channel coating application device provided by the present invention includes a gas source assembly and a coating assembly. The gas source assembly is used to fill the coating assembly with pressurized gas, and the coating assembly is used to apply a coating to the active cooling channel. The coating assembly includes a pressure vessel tank, 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 tank has a throttling discharge interface, and there are several throttling discharge interfaces. The upper end of the side wall of the pressure vessel tank has an air interface. The pressure vessel cover covers the opening of the pressure vessel tank. 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 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 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 material conveying part is detachably connected to several throttling discharge interfaces, 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 assembly, and the other end of the gas conveying part is detachably connected to the bottom or the top of the active cooling channel. When injecting slurry into the active cooling channel for coating, one end of the material conveying part is connected to several throttling discharge interfaces, and the other end of the material conveying part 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 part is connected to the output end of the gas source assembly, and the other end of the gas conveying part is connected to the bottom or the top of the active cooling channel. On the one hand, the gas output by the gas source assembly can be directly filled into the active cooling channel, avoiding the phenomenon that when the gas output by the gas source assembly is filled into the active cooling channel after passing through the pressure vessel tank, the gas will drive the rapid volatilization of anhydrous ethanol in the slurry and move with the air flow, resulting in the aggregation of anhydrous ethanol on the inner wall of the cooling channel to form liquid beads, thereby diluting the slurry on the wall surface and causing the local slurry to flow down, resulting in uneven coating and forming defects. Moreover, the material conveying part and the gas conveying part can be used separately during the process of material conveying and gas conveying, avoiding mutual contamination between the two, and at the same time facilitating the staff to remove the stirring part and the material conveying part from the pressure vessel tank for thorough cleaning to prevent the residual slurry from solidifying and affecting the next use. On the other hand, the gas conveying part can inflate the bottom of the active cooling channel for preliminary drying, and then inflate the top of the active cooling channel for secondary drying, ensuring that the slurry coating can be applied to the inner wall of the active cooling channel more quickly, preventing the slurry coating from flowing down on the inner wall of the active cooling channel due to too long coating time and causing the phenomenon of slurry hanging on the wall, so as to improve the coating effect on the active cooling channel. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of the first working state of the active cooling channel coating device.

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

[0022] Figure 3 It is a schematic structural diagram of the coating assembly.

[0023] Figure 4 It is a flowchart of the active cooling channel coating method.

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

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "upper", "middle", "outer", "inner", "lower", etc. indicating the orientation or position relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0027] On the one hand, the present invention provides a coating device 10 for the coating of the active cooling channel 20, including a gas source assembly 110 and a coating assembly 120. The gas source assembly 110 is used to fill the coating assembly 120 with pressurized gas, and the coating assembly 120 is used to coat the active cooling channel 20. The coating assembly 120 includes a pressure vessel tank 121, a pressure vessel cover 122, a stirring part 123, a material conveying part 124, and a gas conveying part 125. The lower end of the side wall of the pressure vessel tank 121 has a throttling discharge interface 1211, and there are three throttling discharge interfaces 1211. The upper end of the side wall of the pressure vessel tank 121 has an air interface 1212. The pressure vessel cover 122 covers the opening of the pressure vessel tank 121. 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 gas source assembly 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 material conveying part 124 is detachably connected to the three throttling discharge interfaces 1211, and the other end of the material conveying part 124 is detachably connected to the bottom of the active cooling channel 20. One end of the gas conveying part 125 is detachably connected to the output end of the gas source assembly 110, and the other end of the gas conveying part 125 is detachably connected to the bottom or the top of the active cooling channel 20; When injecting slurry into the active cooling channel 20 for coating, please refer to Figure 1 , one end of the material conveying part 124 is connected to the three throttling discharge interfaces 1211, and the other end of the material conveying part 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 part 125 is connected to the output end of the gas source assembly 110, and the other end of the gas conveying part 125 is connected to the bottom or the top of the active cooling channel 20, so that the gas output by the gas source assembly 110 can be directly filled into the active cooling channel 20. When the gas output by the gas source assembly 110 is filled into the active cooling channel 20 after passing through the pressure vessel tank 121, the gas will drive the rapid volatilization of anhydrous ethanol in the slurry and move with the air flow, resulting in the inability of the coating slurry in the active cooling channel 20 to dry quickly or even the formation of liquid beads on the surface of the slurry due to the too high concentration of anhydrous ethanol, diluting the slurry on the wall surface and causing local slurry to flow down to form defects. Moreover, the material conveying part 124 and the gas conveying part 125 can be used separately during the material conveying and gas conveying processes. Please refer to Figure 3, avoiding the phenomenon of mutual contamination between the two parties, and at the same time making it convenient for the staff to remove the stirring part 123 and the feeding part 124 from the pressure vessel tank 121 for thorough cleaning to prevent the residual slurry from solidifying and affecting the next use; the gas feeding part 125 can inflate the bottom of the active cooling channel 20 for preliminary drying, and then inflate the top of the active cooling channel 20 for secondary drying, ensuring that the slurry coating can be coated on the inner wall of the active cooling channel 20 more quickly, preventing the slurry coating from flowing down on the inner wall of the active cooling channel 20 due to too long coating time to produce slurry hanging on the wall, so as to improve the coating effect of the active cooling channel 20.

[0028] Furthermore, the stirring part 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 the stirring motor 1231 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 to be 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 being immersed in the connection between the stirring motor 1231 and the stirring paddle 1233 to form a dry knot, causing the stirring motor 1231 to be stuck.

[0029] Furthermore, the feeding part 124 is a feeding pipe, the number of which is the same as the throttling discharge interface 1211 , one end of the three feeding pipes are detachably connected to the three throttling discharge interfaces 1211 respectively, and the other ends of the three feeding pipes are detachably connected to the bottom of the active cooling channel 20 .

[0030] Furthermore, the gas delivery part 125 includes a gas channel conversion component 1251 and a gas delivery pipe 1252. The number of the gas delivery pipes 1252 is the same as 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, and the other end of the gas channel conversion component 1251 is detachably connected to one end of the three gas delivery pipes 1252. The other ends of the three gas delivery pipes 1252 are detachably connected to the bottom or top of the active cooling channel 20.

[0031] Further, the air source assembly 110 includes a main compressed air pipeline 111, a compressed air purifier 112, a pneumatic triple unit 113, and a pneumatic pressure regulating controller 114. The main compressed air pipeline 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 triple unit 113 through a pipeline. The output end of the pneumatic triple unit 113 is connected to the input end of the pneumatic pressure regulating controller 114 through a pipeline. The output end of the pneumatic pressure regulating controller 114 is detachably connected to the air interface 1212 through a pipeline. The main compressed air pipeline 111 feeds 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 triple unit 113 is used to dehumidify and dry the compressed air. The pneumatic pressure regulating controller 114 is used to adjust the pressure of the compressed air.

[0032] Further, the active cooling channel coating applying device 10 further includes a recovery assembly 126. The recovery assembly 126 is used to collect the excess slurry flowing out of the active cooling channel 20. The recovery assembly 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. The other end of each of the three recovery pipes 1261 extends into the recovery tank 1262.

[0033] Further, a pressure relief safety valve 1221 is further provided on the pressure vessel cover 122. The pressure relief safety valve 1222 is used to monitor and release the pressure in the pressure vessel tank 121. When the pressure relief safety valve 1222 monitors that the pressure in the pressure vessel tank 121 reaches the safety valve value, the pressure relief safety valve 1222 relieves the pressure of the pressure vessel tank 121.

[0034] In this application, the air interface 1211 can be a pneumatic quick-connect interface. The bottom and top of the active cooling channel 20 also have pneumatic quick-connect interfaces. The throttle discharge interface 1211 can be a throttle valve. The output end of the air source assembly 110, both ends of the material conveying pipe, and both ends of the air conveying pipe 1252 have pneumatic quick-connect joints. The gas channel conversion part 1251 can be a pneumatic quick-connect four-way. The connection or disconnection between the pneumatic quick-connect interface and the connecting pipe can be completed by simply pushing or pulling, which greatly saves the installation time to achieve the connection and connection of relevant passages.

[0035] On the other hand, please refer to Figure 4 , the active cooling channel coating applying method provided by the present invention uses the active cooling channel coating applying device 10 described in the above aspect, and specifically includes the following steps. S1: Close the three throttle discharge interfaces 1211, and inject slurry into the pressure vessel tank 121. The liquid level height of the slurry should be lower than the air interface 1212. S2: Cover the pressure vessel cover 122 on 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 avoid the sedimentation of the slurry; S3: Connect the output end of the gas source assembly 110 to the air interface 1212, connect one end of the material conveying part 124 to the three throttle 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 with a first predetermined pressure into the pressure vessel tank 121. At the same time, the three throttle discharge interfaces 1211 are opened. Under the action of pressure, the slurry in the pressure vessel tank 121 sequentially passes through the three throttle discharge interfaces 1211 and the material conveying part 124 and enters the active cooling channel 20 for channel coating; S5: When it is observed that the slurry evenly flows out from the top of the active cooling channel 20, turn off the gas source assembly 110 to stop charging gas into the pressure vessel tank 121, relieve the pressure of the pressure vessel tank 121, and let it stand for a first predetermined time. Utilize the pressure slowdown formed by the material conveying part 124 to make the excess slurry in the active cooling channel 20 slowly flow downwards under its own weight, forming a secondary coating on the inner wall of the active cooling channel 20 to achieve uniform slurry; S6: After step S5 is completed, remove the output end of the gas source assembly 110 from the air interface 1212, remove the other end of the material conveying part 124 from the bottom of the active cooling channel 20 and put it into an empty slurry bucket to recover the slurry in the pressure vessel tank 121. At the same time, connect one end of the gas conveying part 125 to the output end of the gas source assembly 110, and connect the other end of the gas conveying part 125 to the bottom or top of the active cooling channel 20, so that the gas source assembly 110 introduces gas with a second predetermined pressure into the active cooling channel 20 to ensure that the coating slurry on the inner wall surface of the active cooling channel 20 can be quickly dried; 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 material conveying part 124 from the three throttle discharge interfaces 1211, and clean the pressure vessel tank 121, the pressure vessel cover 122, the stirring part 123, and the material conveying part 124 respectively to prevent the residual slurry from solidifying to form slurry particles and affecting the next use.

[0036] Further, in order to prevent too much slurry from overflowing from the top of the active cooling channel 20 and causing pollution, step S3 further includes connecting one end of each of the three recovery pipes 1261 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, so that the slurry overflowing from the top of the active cooling channel 20 flows back into the recovery tank 1262.

[0037] Further, in order to shorten the standing time of the first predetermined time and prevent excess slurry from remaining in the active cooling channel 20, step S5 is specifically as follows: S51: After observing that the slurry flows out evenly from the three recovery pipes 1261, close the air pressure regulating controller 114 to stop charging gas into the pressure vessel tank 121, 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 the pressure of the pressure vessel tank 121. At the same time, ensure that the bottom height of the active cooling channel 20 is higher than the height of the slurry liquid level in the pressure vessel tank 121 to generate a height potential difference. Stand for the first predetermined time for preliminary condensation. During the standing process, the pressure in the pressure vessel tank 121 gradually decreases. Utilize the pressure slowdown formed by the material conveying pipe to make the excess slurry in the active cooling channel 20 slowly flow downwards by its own weight, forming a secondary coating on the inner wall of the active cooling channel 20, realizing uniform slurry, preventing the slurry at the upper end of the active cooling channel 20 from dropping rapidly and causing uneven coating, and at the same time preventing the excess slurry in the three recovery pipes 1261 from flowing back into the active cooling channel 20.

[0038] Further, in order to quickly dry the active cooling channel 20, step S6 is specifically as follows: S61: After step S5 is completed, remove the output end of the gas source assembly 110 from the air interface 1212, and remove the other end of the material conveying part 124 from the bottom of the active cooling channel 20 and put it into an empty slurry bucket to recover the slurry in the pressure vessel tank 121; S62: Connect one end of the gas conveying part 125 to the output end of the gas source assembly 110, and first connect the other end of the gas conveying part 125 to the bottom of the active cooling channel 20, so that the gas source assembly 110 passes the gas of the second predetermined pressure into the active cooling channel 20 through the gas conveying part 125. The gas of the second predetermined pressure inflates the active cooling channel 20 from bottom to top and maintains the second predetermined time for preliminary drying; S63: After step S62 is completed, connect the other end of the gas conveying part 125 to the top of the active cooling channel 20, so that the gas of the second predetermined pressure inflates the active cooling channel 20 from top to bottom and maintains the third predetermined time for secondary drying, ensuring that the slurry coating can be more quickly coated on the inner wall of the active cooling channel 20, and preventing the slurry coating from flowing down on the inner wall of the active cooling channel 20 due to too long coating time and causing the phenomenon of slurry wall hanging.

[0039] The working principle of the present invention is as follows: First, close the three throttle discharge interfaces 1211, and inject slurry into the pressure vessel tank 121. The liquid level height of the slurry should be lower than the air interface 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 mixing 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 avoid sedimentation of the slurry. After the slurry is stirred for 2 minutes, connect the output end of the air source assembly 110 to the air interface 1212, and connect one end of each of the three feed pipes to the three throttle discharge interfaces 1211 respectively. The other ends of the three feed pipes are all connected to the bottom of the active cooling channel 20. One end of each of the three recovery pipes 1261 is connected to the top of the active cooling channel 20, and the other ends of the three recovery pipes 1261 all extend into the recovery tank 1262. Compressed air is introduced into the compressed air purifier 112 through the main compressed air pipeline 111. The compressed air purifier 112 filters and removes impurities from the compressed air, and the pneumatic triple unit 113 dehumidifies and dries the compressed air. After the pressure of the compressed air is adjusted to the first predetermined pressure (0.05 Mpa) by the air pressure adjustment controller 114, gas at the first predetermined pressure is introduced into the pressure vessel tank 121. At the same time, the three throttle discharge interfaces 1211 are opened. Under the action of pressure, the slurry in the pressure vessel tank 121 sequentially passes through the three throttle discharge interfaces 1211 and the feed pipes and enters the active cooling channel 20 for channel coating. When it is observed that the slurry flows out evenly from the three recovery pipes 1261, close the air pressure adjustment controller 114 to stop filling gas into the pressure vessel tank 121. Remove the three recovery pipes 1261 from the top of the active cooling channel 20, open the pressure relief safety valve 1222 to relieve the pressure of the pressure vessel tank 121. At the same time, ensure that the bottom height of the active cooling channel 20 is higher than the liquid level of the slurry in the pressure vessel tank 121 to generate a height potential difference. Let it stand for the first predetermined time (3 minutes) for preliminary condensation. During the standing process, the pressure in the pressure vessel tank 121 gradually decreases. Using the pressure slowdown formed by the feed pipes, the excess slurry in the active cooling channel 20 slowly descends from top to bottom under its own weight, forming a secondary coating on the inner wall of the active cooling channel 20, realizing uniform slurry, preventing the slurry at the upper end of the active cooling channel 20 from rapidly descending and causing uneven coating, and at the same time preventing the excess slurry in the three recovery pipes 1261 from flowing back into the active cooling channel 20. After the static state ends, the redundant slurry in the active cooling channel 20 will completely flow back into the pressure vessel tank 121. Then, the output end of the gas source assembly 110 is removed from the air interface 1212, and the other end of the feeding pipe is removed from the bottom of the active cooling channel 20 and placed into an empty slurry bucket to recover the slurry in the pressure vessel tank 121. At the same time, one end of the gas channel conversion part 1251 is connected to the output end of the gas source assembly 110, and the other end of the gas channel conversion part 1251 is connected to one end of each of the three gas delivery pipes 1252. The other ends of the three gas delivery pipes 1252 are all first connected to the bottom of the active cooling channel 20. After the pressure of the compressed air is adjusted to the second predetermined pressure (0.02 Mpa) by turning on the air pressure adjustment controller 114, the gas at the second predetermined pressure (0.02 Mpa) inflates the active cooling channel 20 from bottom to top and maintains the second predetermined time (7 minutes) for primary drying. Then, the other ends of the three gas delivery pipes 1252 are connected to the top of the active cooling channel 20, and the gas at the second predetermined pressure (0.02 Mpa) inflates the top of the active cooling channel 20 from top to bottom and maintains the third predetermined time (3 minutes) for secondary drying, ensuring that the slurry coating can be coated on the inner wall of the active cooling channel 20 more quickly and preventing the slurry coating from flowing down on the inner wall of the active cooling channel 20 during the coating process for too long to cause the phenomenon of slurry wall hanging; After the secondary drying ends, the pressure vessel cover 122 is removed from the opening of the pressure vessel tank 121, and the feeding pipe is removed from the three throttle discharging interfaces 1211. The pressure vessel tank 121, the pressure vessel cover 122, the stirring motor 1231, the rotating shaft 1232, the stirring paddle 1233, and the feeding pipe are respectively cleaned to prevent the residual slurry from solidifying to form slurry particles and affecting the next use.

[0040] The above-disclosed are only the preferred embodiments of the present invention. Of course, the scope of the rights of the present invention cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present invention still fall within the scope covered by the invention.

Claims

1. An active cooling channel coating application device, characterized in that, It 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. The coating component includes a pressure vessel tank, 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 tank has a throttling discharge interface, and the number of the throttling discharge interfaces is several. The upper end of the side wall of the pressure vessel tank has an air interface. The pressure vessel cover covers the opening of the pressure vessel tank. 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 tank. The pressure vessel tank and the pressure vessel cover are detachably connected. The output end of the gas 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 and inject the slurry into the active cooling channel. One end of the material conveying part is detachably connected to each of the several throttling discharge interfaces, and the other end of the material conveying part 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 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 the top of the active cooling channel.

2. The active cooling channel coating application device according to claim 1, characterized in that, The stirring part 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 to be 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 application device according to claim 1, wherein The material conveying part is a material conveying pipe. The number of the material conveying pipes is the same as that of the throttling discharge interfaces. One end of each of the several material conveying pipes is detachably connected to each of the several throttling discharge interfaces, and the other ends of the several material conveying pipes are all detachably connected to the bottom of the active cooling channel.

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

5. The active cooling channel coating application device according to claim 1, characterized in that, The air source assembly includes a main compressed air pipeline, a compressed air purifier, a pneumatic triple unit, and a pressure regulating controller. 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 triple unit through a pipeline. The output end of the pneumatic triple unit is connected to the input end of the pressure regulating controller through a pipeline. The output end of the pressure regulating controller is detachably connected to the air interface through a pipeline. The main compressed air pipeline feeds compressed air into the compressed air purifier. The compressed air purifier is used to filter and remove impurities from the compressed air. The pneumatic triple unit is used to dehumidify and dry the compressed air. The pressure regulating controller is used to adjust the pressure of the compressed air.

6. The active cooling channel coating application device according to claim 1, wherein, The active cooling channel coating applying device further includes a recovery assembly. The recovery assembly is used to collect the excess slurry flowing out of the active cooling channel. The recovery assembly includes a recovery pipe and a recovery tank. There are several recovery pipes. One end of each of the several recovery pipes is detachably connected to the top of the active cooling channel. The other end of each of the several recovery pipes extends into the recovery tank.

7. The active cooling channel coating application device according to claim 1, characterized in that, A pressure relief safety valve is further provided on the pressure vessel cover. The pressure relief safety valve is used to monitor and release the pressure inside the pressure vessel tank.

8. A method for coating an active cooling channel coating, characterized in that, Using the active cooling channel coating applying device according to any one of claims 1-7 above, specifically including the following steps, S1: Close several of the throttle discharge interfaces, and inject slurry into the pressure vessel tank. The liquid level height of the slurry should be lower than the air interface. S2: Cover the pressure vessel cover on the opening of the pressure vessel tank to seal the pressure vessel tank, and support the other end of the stirring part to stir the slurry in the pressure vessel tank to ensure the uniformity of the slurry during the coating application process and avoid sedimentation of the slurry. S3: Connect the output end of the air source assembly to the air interface, connect one end of the material conveying part to several of the throttle discharge interfaces, and connect the other end of the material conveying part to the bottom of the active cooling channel. S4: The air source assembly feeds gas with a first predetermined pressure into the pressure vessel tank. At the same time, several of the throttle discharge interfaces are opened. Under the action of the pressure, the slurry in the pressure vessel tank sequentially passes through several of the throttle discharge interfaces, the material conveying part, and enters the active cooling channel for channel coating application. S5: When it is observed that slurry uniformly flows out from the top of the active cooling channel, close the air source assembly to stop feeding gas into the pressure vessel tank, relieve the pressure of the pressure vessel tank, and let it stand for a first predetermined time. Utilize the pressure drop formed by the material conveying part to make the excess slurry in the active cooling channel slowly flow downwards under its own weight, forming a secondary coating on the inner wall of the active cooling channel to achieve uniform slurry. S6: After step S5 is completed, remove the output end of the gas source assembly from the air interface, remove the other end of the material feeding part from the bottom of the active cooling channel and place it in an empty slurry bucket to recover the slurry in the pressure vessel tank. At the same time, connect one end of the gas transmission part to the output end of the gas source assembly, and connect the other end of the gas transmission part to the bottom or top of the active cooling channel, so that the gas source assembly passes the gas transmission part to introduce gas with a second predetermined pressure into the active cooling channel, ensuring that the coating slurry on the inner wall surface of the active cooling channel can be quickly dried; 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 material feeding part from several of the throttle discharge interfaces, and clean the pressure vessel tank, the pressure vessel cover, the stirring part, and the material feeding part respectively to prevent the remaining slurry from solidifying to form slurry particles and affecting the next use.

9. The method for coating an actively cooled flow channel coating according to claim 8, wherein, Step S3 further includes connecting one end of several of the recovery pipes to the top of the active cooling channel, and extending the other ends of several of the recovery pipes into the recovery tank, so that the slurry overflowing from the top of the active cooling channel flows back to the recovery tank.

10. The method for coating an actively cooled flow channel coating according to claim 8, characterized in that, Step S6 specifically is: S61: After step S5 is completed, remove the output end of the gas source assembly from the air interface, remove the other end of the material feeding part from the bottom of the active cooling channel and place it in an empty slurry bucket to recover the slurry in the pressure vessel tank; S62: Connect one end of the gas transmission part to the output end of the gas source assembly, and first connect the other end of the gas transmission part to the bottom of the active cooling channel, so that the gas source assembly passes the gas transmission part to introduce gas with a second predetermined pressure into the active cooling channel. The gas with the second predetermined pressure fills the active cooling channel 20 from bottom to top and maintains for a second predetermined time for preliminary drying; S63: After step S62 is completed, connect the other end of the gas transmission part to the top of the active cooling channel, so that the gas with the second predetermined pressure fills the active cooling channel from top to bottom and maintains for a third predetermined time for secondary drying.

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