Embedding infiltration treatment equipment for gas turbine blade

Abstract

The embodiment of the invention discloses embedding infiltration treatment equipment for a gas turbine blade. According to a specific embodiment, the embedding infiltration treatment equipment comprises at least two heating wells, a cooling well, a reaction furnace, a control assembly and truss hoisting equipment, wherein heating assemblies are uniformly distributed on the inner walls of the heating wells; the truss hoisting equipment is arranged above the heating well and the cooling well; the heating well and the cooling well can accommodate the reaction furnace; the control assembly is in communication connection with the heating well, the cooling well and the truss hoisting equipment; the control assembly is configured to execute the following steps: in response to the fact that the reacting furnace is installed in place, controlling the preset vacuum assembly to vacuumize the interior of the reacting furnace to a preset vacuum degree; controlling a preset gas conveying device to inject protective gas into the reaction furnace until the target gas pressure intensity is reached; controlling the heating well to carry out gradient heating treatment on the reaction furnace; and controlling the truss hoisting equipment to hoist the reaction furnace to a cooling well for cooling treatment. According to the implementation mode, the durability of the gas turbine blade is improved through the protective gas and the gradient heating treatment.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of gas turbine technology, and more specifically to an encapsulation and infiltration treatment device for gas turbine blades. Background Technology

[0002] As a core component of the power system, gas turbine blades are subjected to high temperature, high pressure, and corrosive gas environments for extended periods, requiring extremely high surface hardness, wear resistance, and oxidation resistance. Embedding and infiltration processes can improve the surface properties of the blades and extend their service life. Currently, commonly used embedding and infiltration equipment typically involves linearly heating the blades directly in air.

[0003] However, when using commonly used embedding and infiltration treatment equipment, the following technical problems often arise: Because linear heating of the blades without a protective gas layer makes it easy for an oxide layer to form on the blade surface, and thermal stress concentration can easily occur on the blades. This leads to poor adhesion between the permeate layer and the blade substrate, making the blades prone to cracking, and resulting in poor durability of the gas turbine blades.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background of the present disclosure concept, and therefore may contain information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0005] The summary portion of this disclosure is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description portion. This summary portion is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0006] Some embodiments of this disclosure provide an encapsulation and infiltration treatment device for gas turbine blades to solve one or more of the technical problems mentioned in the background section above.

[0007] Some embodiments of this disclosure provide an embedding and infiltration treatment device for gas turbine blades. The device includes a heating well, a cooling well, a reactor, a control assembly, and a gantry crane. The heating well has heating assemblies on its inner wall; these assemblies are evenly distributed around the center of the heating well; there are at least two heating wells; the gantry crane is positioned above the heating well and the cooling well; both the heating well and the cooling well are configured to accommodate the reactor; the control assembly is communicatively connected to the heating well, the cooling well, and the gantry crane; the control assembly is configured to perform the following steps: in response to the reactor being installed in place, controlling a preset vacuum assembly to evacuate the reactor to a preset vacuum level; controlling a preset gas supply device to inject protective gas into the reactor to reach a target gas pressure; controlling the heating well to perform a gradient heating treatment on the reactor; and controlling the gantry crane to lift the reactor, after the gradient heating treatment, to the cooling well for cooling.

[0008] Optionally, the aforementioned encapsulation seepage treatment equipment also includes a protective railing; the protective railing is located on top of the aforementioned heating well and the aforementioned cooling well; a step ladder is provided on one side of the aforementioned protective railing.

[0009] Optionally, the aforementioned encapsulation and seepage treatment equipment also includes a power distribution cabinet; the power distribution cabinet is located below the aforementioned protective railing.

[0010] Optionally, the above-mentioned encapsulation seepage treatment equipment also includes a chiller.

[0011] Optionally, the aforementioned reactor includes a furnace body, a furnace cover, and a material support bracket; the furnace body is configured to accommodate the material support bracket; and the furnace cover is provided with lifting holes.

[0012] Optionally, the aforementioned reactor may also include a profiled feed cylinder.

[0013] Optionally, a pressure gauge is provided on the furnace cover.

[0014] Optionally, the heating well is provided with an insulation layer on its outer side; the insulation layer includes a heat-resistant base layer, a core insulation layer, and a protective sealing layer, wherein the heat-resistant base layer is aluminum silicate fiber felt, and the heat-resistant base layer is fixed to the outer wall of the heating well by anchors made of zirconia material; the core insulation layer is a nano heat insulation board, and the core insulation layer is tightly attached to the heat-resistant base layer; the protective sealing layer is made of stainless steel, and the protective sealing layer is attached to the core insulation layer; a temperature sensor that is communicatively connected to the control component is also embedded inside the core insulation layer for real-time acquisition of the internal temperature of the core insulation layer; the control component is configured to trigger a preset audible and visual alarm device to issue an alarm in response to detecting an abnormal upward trend in the internal temperature of the core insulation layer.

[0015] Some embodiments of this disclosure provide an embedding and infiltration treatment device for gas turbine blades, which can improve the durability of gas turbine blades. Specifically, the poor durability of most gas turbine blades is due to the fact that currently used embedding and infiltration treatment devices typically linearly heat the blades directly in an air environment. Directly linearly heating the blades in the absence of a protective gas makes it easy for an oxide layer to form on the blade surface, and thermal stress concentration to occur on the blades. This, in turn, leads to poor adhesion between the infiltrated layer and the blade substrate, making the blades prone to cracking. Based on this, some embodiments of this disclosure provide an embedding and infiltration treatment device for gas turbine blades. The device includes a heating well, a cooling well, a reactor, a control assembly, and a gantry crane. The heating well has heating assemblies on its inner wall; these assemblies are evenly distributed around the center of the heating well; there are at least two heating wells; the gantry crane is positioned above the heating well and the cooling well; both the heating well and the cooling well are configured to accommodate the reactor; the control assembly is communicatively connected to the heating well, the cooling well, and the gantry crane; the control assembly is configured to perform the following steps: in response to the reactor being installed in place, controlling a preset vacuum assembly to evacuate the reactor to a preset vacuum level; controlling a preset gas supply device to inject protective gas into the reactor to achieve a target gas pressure; controlling the heating well to perform gradient heating treatment on the reactor; and controlling the gantry crane to lift the reactor, after gradient heating treatment, to the cooling well for cooling treatment. By introducing protective gas into the reactor and subjecting it to gradient heating, the formation of an oxide layer on the blade surface and the concentration of thermal stress on the blades are reduced. This improves the durability of the gas turbine blades. Attached Figure Description

[0016] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and elements are not necessarily drawn to scale.

[0017] Figure 1 This is a front view of an encapsulation and infiltration treatment apparatus for gas turbine blades according to some embodiments of this disclosure; Figure 2 This is a top view of an encapsulation and infiltration treatment apparatus for gas turbine blades according to some embodiments of this disclosure. Detailed Implementation

[0018] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0019] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0020] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0021] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0022] The names of messages or information exchanged between multiple devices in the embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of such messages or information.

[0023] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a front view of an encapsulation and infiltration treatment apparatus for gas turbine blades according to some embodiments of this disclosure. Figure 1 Includes 1. Protective railing, 2. Furnace cover, 3. Step ladder, 4. Electrical distribution cabinet, and 5. Control components.

[0025] Figure 2 This is a top view of an encapsulation and infiltration treatment apparatus for gas turbine blades according to some embodiments of this disclosure. Figure 2 It includes staircase 3, cooling well 6, and heating well 7.

[0026] In some embodiments, the aforementioned equipment for embedding and infiltrating gas turbine blades may include a heating well 7, a cooling well 6, a reactor, a control assembly 5, and a gantry crane. Both the heating well 7 and the cooling well 6 can be cylindrical structures, without specific limitations. The inner wall of the heating well 7 may be provided with heating components. These heating components can be resistance heating wires or electromagnetic heating coils, fixed by being embedded in the inner wall of the heating well 7. The heating components can provide heat to the internal space of the heating well 7 to meet the temperature requirements of the gas turbine blade embedding and infiltrating process. The heating components can be evenly distributed around the center of the heating well 7. This distribution improves the uniformity of temperature distribution in different areas within the heating well 7, enhances the heating consistency of different parts of the reactor, and helps improve the uniformity of the infiltrated layer during the blade embedding and infiltrating process. The number of heating wells 7 can be at least two. The cooling well 6 can be made of a high-temperature resistant and corrosion-resistant metal material. The cooling well 6 can be a device for cooling the reactor after heating. The interior of the cooling well 6 may be provided with spiral water-cooled pipes, through which cooling water flows to cool the reactor. The presence of at least two heating wells 7 can improve the overall operating efficiency of the equipment. The gantry crane can be positioned above the heating wells 7 and the cooling wells 6. The gantry crane can be a bridge crane. The gantry crane can be used to lift the reactor, allowing it to be moved between different workstations. The reactor can be a device for holding gas turbine blades. The reactor can be a cylindrical structure. Both the heating wells 7 and the cooling wells 6 can be configured to accommodate the reactor. The inner diameter of the heating wells 7 and the cooling wells 6 can be larger than the outer diameter of the reactor. High-temperature resistant soft rubber pads can be installed at the edges of the well openings of the heating wells 7 and the cooling wells 6 to reduce wear when the reactor contacts the well opening. The control component 5 can communicate with the heating wells 7, the cooling wells 6, and the gantry crane. The control component 5 can be a device for controlling the operation of the entire encapsulation and seepage treatment equipment. The control component 5 can be an industrial computer, without specific limitations.

[0027] In some embodiments, the control component described above can be configured to perform the following steps: The first step, in response to the reactor being installed in place, involves controlling the preset vacuum assembly to evacuate the reactor's interior to a preset vacuum level. The reactor being installed in place can mean that it is stably placed inside the heating well. Whether the reactor is installed in place can be determined by a position sensor pre-installed in the heating well or by whether the operator presses a confirmation button. The preset vacuum assembly may include a vacuum pump, gas pipelines, and a vacuum sensor. The vacuum pump is connected to the reactor via the gas pipeline. The vacuum sensor can collect vacuum level data within the reactor in real time and transmit it to the control assembly. The preset vacuum level may be a specific value pre-stored in the control assembly by the operator according to the requirements of the gas turbine blade embedding process; for example, it could be 10. - The value is ³Pa, without a specific limit. In practice, the aforementioned control components can send a start command to the vacuum pump and read the detection data from the vacuum sensor in real time. When the vacuum level inside the reactor is detected to have reached the preset vacuum level, a stop command is sent to the vacuum pump.

[0028] The second step involves controlling a pre-set gas delivery device to inject protective gas into the reactor until the target pressure is reached. This protective gas can be a chemically stable inert gas such as argon or nitrogen. This protective gas reduces the risk of oxidation of the blades during subsequent heating. The pre-set gas delivery device can be a system for storing and delivering the protective gas. It may include a gas storage tank, a flow control valve, and a pressure sensor. The gas storage tank can be a container for storing the protective gas, such as a stainless steel gas storage tank. The flow control valve can be used to adjust the gas injection rate. The pressure sensor can be used to monitor changes in pressure within the reactor in real time. The target pressure can be a preset gas pressure value by the operator, for example, 0.1 MPa, without specific limitation. In practice, the control components can send a start signal to the pre-set gas delivery device to open the flow control valve and read the data detected by the pressure sensor in real time. When the target pressure is reached within the reactor, a stop signal is sent to the pre-set gas delivery device to close the flow control valve.

[0029] The third step involves controlling the heating well to perform a gradient heating process on the reactor. This gradient heating process refers to gradually increasing the temperature within the heating well in stages according to a preset heating curve. This gradient heating reduces thermal stress on the reactor's blades. The preset heating curve can include multiple temperature stages and corresponding holding times. For example, the preset heating curve could correspond to: a first stage from room temperature to 300°C at a rate of 5°C / min, held for 30 minutes; a second stage from 300°C to 600°C at a rate of 8°C / min, held for 40 minutes; and a third stage from 600°C to 950°C at a rate of 10°C / min. In practice, the control components can control the operating power of the heating components within the heating well according to the preset heating curve. Temperature data can be collected in real-time by a temperature sensor pre-installed within the heating well to determine whether to perform a holding period or further heating.

[0030] The fourth step involves controlling the gantry crane to lift the reactor, which has undergone gradient heating, into the cooling well for cooling. In practice, the aforementioned control components can control the gantry crane to transfer the reactor from the heating well to the cooling well and control the flow of cold water within the cooling well to cool the reactor.

[0031] Optionally, such as Figure 1 and Figure 2 As shown, the aforementioned encapsulation and seepage treatment equipment may also include a protective railing 1. The protective railing 1 may be a mesh structure made of welded stainless steel pipes. The protective railing 1 may be installed at the top of the heating well 7 and the cooling well 6. Because the openings of the heating well 7 and the cooling well 6 are higher than the ground, workers often need to operate at the openings of the heating well 7 and the cooling well 6 for the normal operation of the encapsulation and seepage treatment equipment. Therefore, the protective railing 1 can protect workers and reduce the risk of falls. A step ladder 3 may be provided on one side of the protective railing 1. The step ladder 3 may include treads with anti-slip textures on the surface. The anti-slip textures may be a grid-like protrusion, which is not specifically limited here. The step ladder 3 may be integrally connected to the protective railing 1, facilitating workers to periodically climb to the top of the encapsulation and seepage treatment equipment for maintenance, inspection, or parameter adjustment.

[0032] Optionally, such as Figure 1 As shown, the aforementioned encapsulation and seepage treatment equipment may further include a power distribution cabinet 4. The power distribution cabinet 4 may adopt a sealed cabinet structure. The interior of the power distribution cabinet 4 may be equipped with electrical components such as circuit breakers, contactors, and relays, enabling centralized control and protection of the power supply to each component of the encapsulation and seepage treatment equipment. The power distribution cabinet 4 may be located below the aforementioned protective railing 1 for convenient daily inspection and line maintenance by staff.

[0033] Optionally, the aforementioned encapsulation seepage treatment equipment may also include a chiller. The chiller may be an air-cooled screw chiller, and no specific limitation is made herein. The chiller can provide cooling water at a stable temperature to support the cooling well 6.

[0034] Optionally, such as Figure 1 As shown, the aforementioned reactor may include a furnace body, a furnace cover 2, and a material support bracket. Both the furnace body and the furnace cover 2 may be made of a high-temperature resistant alloy. The furnace body may be cylindrical, without specific limitation. The furnace cover 2 may be a device for sealing the furnace body, for example, it may be a circular plate-like structure. The material support bracket may be a grid-like metal bracket, facilitating the placement of the gas turbine blades to be processed. The furnace body may be constructed to accommodate the material support bracket. For example, when the material support bracket is disc-shaped, the interior of the furnace body may have a cylindrical space. The furnace cover 2 may have a lifting hole. The lifting hole may be located at the center of the furnace cover 2. The lifting hole may be a through hole opened in the furnace cover 2, used to provide a fixing point for the aforementioned gantry crane equipment.

[0035] Optionally, the aforementioned reactor may further include a conformal feed cylinder. This conformal feed cylinder can be a cylindrical structure that matches the cross-sectional profile of the gas turbine blade. For example, assuming the gas turbine blade has an elliptical cross-section, the conformal feed cylinder can be an elliptical cylinder with its major and minor axes corresponding to axes larger than the major and minor axes of the cross-section. This conformal feed cylinder allows for better adhesion and encapsulation of the blade with the encapsulating powder, improving the density of the encapsulation layer.

[0036] Optionally, a pressure gauge may be installed on the furnace cover 2. The pressure gauge may be an analog or digital pressure gauge, which is connected to the interior of the reactor via an interface and can display the pressure value inside the reactor in real time.

[0037] Optionally, an insulation layer can be provided on the outer side of the heating well 7. This insulation layer can be attached to the outer wall of the heating well 7 using fasteners, reducing heat loss from the heating well 7, lowering energy consumption, and also reducing the risk of excessively high outer wall temperatures affecting surrounding components. The insulation layer can include a heat-resistant base layer, a core insulation layer, and a protective sealing layer. These three layers can be sequentially attached from the inside out, forming a combined effect of heat resistance, efficient insulation, and protective sealing. The heat-resistant base layer can be aluminum silicate fiber felt, a material with high-purity alumina and silicon dioxide as its main components, possessing excellent high-temperature resistance and thermal stability, capable of directly withstanding high-temperature conduction from the outer wall of the heating well 7, reducing heat penetration to the outside. The core insulation layer can be a nano-insulation board, and can be tightly attached to the heat-resistant base layer. The nano-insulation board can be a plate-like structure made with silicon dioxide as the core raw material and reinforced with fibers, further blocking heat conduction paths. The aforementioned protective sealing layer can be made of stainless steel and can be tightly bonded to the aforementioned core insulation layer. This protective sealing layer can resist the erosion of moisture, dust, and other impurities in the external environment, protecting the aforementioned heat-resistant base layer and the aforementioned core insulation layer. The core insulation layer can also be embedded with temperature sensors that communicate with the aforementioned control component 5 to obtain the internal temperature of the core insulation layer in real time. These temperature sensors can be K-type thermocouples, and the number can be set to 8-12, evenly distributed inside the core insulation layer, and communicated with the aforementioned control component 5 via high-temperature resistant wires. Using more than one temperature sensor for temperature detection allows for regional temperature monitoring of the heating well 7. For example, when the temperature value detected by one temperature sensor is significantly higher than the temperature values ​​detected by other temperature sensors, it can help personnel determine whether there is damage to the insulation layer or the inner wall of the heating well 7 near that temperature sensor. The aforementioned control component 5 can be configured to trigger a preset audible and visual alarm device in response to the detection of an abnormal upward trend in the internal temperature of the insulation layer. The criterion for judging the abnormal temperature rise trend mentioned above can be that the difference between the temperature value detected by a single temperature sensor and the average temperature value collected by all temperature sensors exceeds a preset difference. This preset difference can be set by the operator, for example, it could be 20°C, and is not specifically limited here. The aforementioned audible and visual alarm device can be a warning device installed in a conspicuous location in the equipment operating area, for example, it can be installed on the upper part of the outer surface of the aforementioned insulation layer. The aforementioned audible and visual alarm device can include a buzzer and an LED warning light. When the alarm is triggered, the buzzer can emit a sound, and the LED warning light can emit a flashing red light to visually remind the operator to promptly investigate the cause of the abnormality so that maintenance measures can be taken quickly.

[0038] In addressing the technical problems mentioned above, and considering the application scenario—high humidity environments, such as southern cities during the humid spring season or plum rain season—the following technical issues often arise: the infiltration and encapsulation treatment equipment experiences repeated sudden cooling or heating during operation, easily leading to condensation of liquid water vapor due to excessive air humidity, causing corrosion of the metal substrate and resulting in a short service life. Considering the following requirements for this application scenario: adaptability to short-term extremely high humidity, adaptability to long-term high humidity, and adaptability to repeated sudden temperature rises or falls, we decided to adopt the following solution: Optionally, a moisture-proof and heat-insulating composite layer may be provided on the outer side of the aforementioned heating well 7. This moisture-proof and heat-insulating composite layer may be a multi-layered structure capable of simultaneously achieving both heat insulation and moisture-proof effects. The moisture-proof and heat-insulating composite layer may include hydrophobic aluminum silicate fiber felt, closed-cell polyurethane insulation board, and stainless steel moisture-proof board, with the three materials sequentially bonded together from the inside out. The hydrophobic aluminum silicate fiber felt can be a functional layer for achieving heat insulation; its material may be based on aluminum silicate and treated with a hydrophobic coating to ensure that the hydrophobic aluminum silicate fiber felt possesses both good high-temperature resistance and hydrophobic properties. The hydrophobic treatment refers to a process technology that treats normally hydrophilic materials to make them difficult for water to adhere to. For example, a water-soluble solution containing organosilicon hydrophobic agents such as methylsilane or hydroxyl silicone oil can be applied to the surface and internal pores of the fiber felt through impregnation or spraying processes. Subsequently, heat treatment at 150°C to 250°C is performed for curing, allowing the organosilicon molecules to firmly adhere to the fiber surface through chemical bonding or physical encapsulation, thereby forming a monomolecular hydrophobic film on the surface. This converts the hydrophilic groups (such as silanol groups) on the fiber surface into hydrophobic organosilicon groups, ultimately giving the treated fiber felt a durable hydrophobic effect. The aforementioned closed-cell polyurethane insulation board can serve as a functional layer with moisture-proof properties. The aforementioned closed-cell polyurethane insulation board has a high proportion of closed-cell structures, low porosity, almost no water absorption, and low thermal conductivity, which can further enhance the insulation effect and block moisture penetration paths. The aforementioned closed-cell polyurethane insulation board can be made of closed-cell foam plastic material and has a plate-like structure with a surface profile matching the aforementioned heating well 7. The aforementioned stainless steel moisture-proof board can serve as the outermost protective functional layer. It can be made of 304 or 316L stainless steel, with no specific limitation. The surface of the stainless steel moisture-proof board is smooth and flat, with strong corrosion resistance, resisting the erosion of moisture and impurities in the external environment. Furthermore, the seams of the stainless steel moisture-proof board can be fully sealed with weather-resistant adhesive. The weather-resistant adhesive can be made of silicone or polyurethane, possessing good high and low temperature resistance and sealing performance. The full welding process improves the sealing of the seams, reducing moisture penetration. The aforementioned control component 5 can be installed inside the moisture-proof cabinet. The moisture-proof cabinet can have a well-sealed cabinet structure, made of cold-rolled steel plate with an anti-corrosion coating. Sealing strips can be installed on the cabinet door frame to reduce the entry of external moisture. A semiconductor dehumidifier can be installed inside the moisture-proof cabinet to reduce the humidity of the air inside, providing a dry working environment for the control component 5 and improving operational safety. The heating well 7 may be equipped with a dehumidification component, which can reduce the humidity inside the heating well 7. This component can remove moisture from the environment inside the well before the heating process is started, providing a dry environment for the encapsulation and seepage treatment. The dehumidification component may include an annular air distribution pipe, a dehumidification filter element, a negative pressure exhaust pump, and a humidity monitoring probe.The aforementioned annular gas distribution pipe can be horizontally laid along the inner wall of the heating well 7, with its height positioned at the middle of the inner wall. The annular gas distribution pipe can be made of stainless steel, and its diameter can be 20-30 mm, without specific limitations. The side of the annular gas distribution pipe facing inwards can have evenly spaced vent holes. The vent hole diameter can be 2-3 mm, and the hole spacing can be 15-20 mm, without specific limitations, as long as the gas can be evenly injected into the heating well to form a circulation. One end of the annular gas distribution pipe can be connected to the nitrogen branch of the aforementioned pre-set gas delivery device via a sealing flange. The sealing flange can be made of stainless steel, and the flange face can be equipped with a sealing gasket to improve the sealing performance during gas transmission and reduce nitrogen leakage. The other end can be sealed, allowing nitrogen to only exit from the various vent holes in the pipe, enabling the gas to diffuse evenly to all areas within the heating well 7. The aforementioned dehumidifying filter element can be embedded inside the aforementioned annular air distribution pipe to dry the nitrogen gas to be blown into the aforementioned heating well 7. The aforementioned dehumidifying filter element can be a structure made primarily of activated carbon and molecular sieves that can be embedded within it, for example, a cylindrical structure. The aforementioned negative pressure exhaust pump can be installed on the lower part of the outer side of the aforementioned heating well 7, and its installation position can avoid the heating area to reduce the impact of high temperature on the pump body. When the aforementioned negative pressure exhaust pump is working, it can generate negative pressure suction to expel the gas inside the aforementioned heating well 7. For example, the aforementioned negative pressure exhaust pump can be a negative pressure vacuum pump; no specific limitation is made here, as long as the exhaust effect is achieved. The aforementioned humidity monitoring probe can be embedded in the middle of the inner wall of the aforementioned heating well 7, a position that can accurately reflect the humidity level inside the aforementioned heating well 7. The aforementioned humidity monitoring probe can be a capacitive humidity sensor and can communicate with the aforementioned control component 5, transmitting the collected humidity data to the aforementioned control component 5 in real time to provide data support for the dehumidification operation. Before the heating well 7 can be activated to heat the reactor, the control component 5 can be configured to control the dehumidification component to reduce the humidity inside the heating well 7. This control by the control component 5 can include the following process: In response to real-time humidity data received from a humidity monitoring probe exceeding a preset threshold, the control component 5 controls the activation of the nitrogen branch of the preset gas supply device and the negative pressure exhaust pump. Nitrogen enters the annular gas distribution pipe and is injected into the heating well 7 through the vent. Simultaneously, the negative pressure exhaust pump creates a slight negative pressure inside the heating well 7, causing the moisture inside to flow towards the bottom. As it passes through the dehumidification filter, moisture and impurities are adsorbed and filtered, and clean gas is extracted from the well. During this process, the humidity monitoring probe continuously transmits humidity data to the control component 5. When the data drops to the target range, the control component 5 shuts off the nitrogen branch and the negative pressure exhaust pump, completing the dehumidification operation and creating a dry environment for subsequent heating processes.

[0039] The above-mentioned optional embodiments, as an inventive point of this disclosure, solve the technical problem of "short service life of embedded infiltration treatment equipment under high humidity environment". The specific factors causing this technical problem are as follows: the absolute water content of the air in a high humidity environment is high, exceeding the tolerance threshold of conventional equipment protection. In particular, water vapor easily penetrates into the interior of the heating well structure through structural gaps and material pores, accelerating the corrosion of the metal structure. If the above factors are solved, the service life of the embedded infiltration treatment equipment can be extended. To achieve this effect, this disclosure also provides a dehumidification solution. On the one hand, the outer moisture-proof and heat-insulating composite layer constructs a moisture barrier. The multi-layered structure of hydrophobic aluminum silicate fiber felt and closed-cell polyurethane insulation board retains the heat insulation performance under high-temperature conditions while reducing water vapor adsorption through the hydrophobic properties of the materials themselves. On the other hand, the dehumidification component inside the heating well quickly removes the accumulated moisture inside the well before the heating process starts through the coordinated action of nitrogen purging and negative pressure extraction. This extends the service life of the heating well.

[0040] In addressing the short lifespan of the aforementioned buried infiltration treatment equipment, a further technical challenge arises in the application scenario: high humidity and salinity environments, such as coastal areas with high salt spray. The salt spray condensing on the inner wall of the heating well evaporates after the well begins to heat up, leaving salt residue that corrodes the inner wall under high temperatures, making it susceptible to damage. Considering the specific requirements of this application scenario—adaptability to long-term high salt spray environments and high temperatures—we have decided to adopt the following solution: Optionally, the inner wall material of the aforementioned heating well 7 can be Hastelloy, and the inner wall surface of the aforementioned heating well 7 can be coated with a polytetrafluoroethylene (PTFE) and ceramic composite anti-salt coating. The use of Hastelloy is suitable for operating conditions where the aforementioned heating well 7 operates at temperatures of 950℃ and above, and also possesses good resistance to pitting corrosion and crevice corrosion, maintaining its structural integrity in complex saline environments. The aforementioned PTFE and ceramic composite anti-salt coating can be a coating primarily composed of PTFE resin and ceramic particles, which can be used to reduce the corrosive effects of high salinity and high temperature environments on the inner wall of the heating well 7.

[0041] The aforementioned polytetrafluoroethylene and ceramic composite anti-salt coating can be sprayed onto the inner wall of the aforementioned heated well through the following steps: The first step involves using a plasma arc cleaning process to remove the oxide scale from the inner wall of the heating well, resulting in a de-scaled inner wall. This plasma arc cleaning process refers to a surface treatment technology that utilizes the high temperature and high-speed plasma gas flow generated by a plasma arc to instantly melt and peel off oxide scale, rust layers, and oil stains from the metal surface. In practice, a plasma cleaner can be used to remove the oxide scale from the inner wall of the heating well, resulting in a de-scaled inner wall. This plasma arc cleaning process not only removes the oxide scale from the surface of the heating well's inner wall but also provides a slight activation treatment to the inner wall surface, laying the foundation for subsequent bonding of the coating to the substrate.

[0042] The second step involves roughening the descaled inner wall using a dry sandblasting process, resulting in a roughened inner wall. This dry sandblasting process utilizes compressed air to propel abrasive particles at high speed onto the workpiece surface. The impact and cutting action of the abrasive particles create a uniformly rough surface. In practice, dry sandblasting can be used to roughen the descaled inner wall. For example, white corundum abrasive can be used, with a particle size of 80-120 mesh. The sandblasting pressure is controlled at 0.4-0.6 MPa, the spray angle of the spray gun is 45°-60°, and the moving speed is 30-50 mm / s. The purpose of this dry sandblasting process is to increase the surface area and surface roughness of the heated well's inner wall, allowing the coating material to form a stronger bond with the substrate through mechanical interlocking.

[0043] The third step involves purging the roughened inner wall with dry nitrogen gas to obtain the purged inner wall. In practice, a high-pressure nitrogen cylinder can be used in conjunction with an air spray gun, moving along the axial and circumferential directions of the inner wall to purge it, resulting in the purged inner wall. Purgering removes sand, dust, and other impurities remaining on the inner wall surface after the roughening process.

[0044] The fourth step involves spraying the coating material onto the purged inner wall to obtain the sprayed inner wall. In practice, a high-pressure airless sprayer can be used to spray the coating material onto the purged inner wall to obtain the sprayed inner wall. The coating material can be prepared through the following steps: Step 1: Mix polytetrafluoroethylene (PTFE) resin, alumina ceramic powder, silicon carbide wear-resistant particles, and a curing agent in a disperser according to a preset ratio to obtain a mixed raw material. PTFE resin imparts excellent hydrophobicity and chemical inertness to the coating; alumina ceramic powder enhances the coating's hardness and high-temperature resistance; and silicon carbide wear-resistant particles strengthen the coating's wear resistance. A polyamide curing agent can be used to promote coating curing. The preset ratio can be the mass ratio of PTFE resin, alumina ceramic powder, silicon carbide wear-resistant particles, and curing agent, for example, PTFE resin: alumina ceramic powder: silicon carbide wear-resistant particles: curing agent = 60:25:10:5. No specific limitation is made here; it can be adjusted according to the application requirements. In practice, PTFE resin, alumina ceramic powder, silicon carbide wear-resistant particles, and curing agent can be mixed in a disperser according to the preset ratio to obtain the mixed raw material.

[0045] Step two involves filtering the mixed raw materials to obtain the filtered material. In practice, a stainless steel filter screen can be used to filter the mixed raw materials. This step removes any large particles or incompletely dispersed clumps that may be present in the mixed raw materials, improving the uniformity of the coating material and reducing the risk of particulate defects on the coating surface after spraying.

[0046] Step 3: Dilute the filtered raw material to obtain the coating material. In practice, a mixed solution of anhydrous ethanol and ethyl acetate can be used to dilute the filtered raw material to obtain the coating material. During the dilution process, the diluent can be added to the filtered raw material while stirring. The mixing ratio (volume ratio) of anhydrous ethanol and ethyl acetate can be 3:1.

[0047] The fifth step is to cure the sprayed inner wall to obtain an inner wall with a composite anti-salt coating of PTFE and ceramic. In practice, the sprayed inner wall can be placed in a vacuum drying oven and heated to cure it, resulting in an inner wall with a composite anti-salt coating of PTFE and ceramic. For example, the vacuum drying oven can be controlled to cure the sprayed inner wall in stages: in the first stage, the temperature of the sprayed inner wall is raised to 80~100℃ and held for 60~90 minutes to allow the thinner in the coating to slowly evaporate; in the second stage, the temperature is raised to 150~180℃ and held for 120~50 minutes to promote the initial curing of the coating; in the third stage, the temperature is raised to 200~220℃ and held for 180~240 minutes to completely cure the coating and form a dense protective structure. After curing, it can be allowed to cool naturally to room temperature.

[0048] The above-described optional embodiments, as an inventive point of this disclosure, solve the technical problem of "easy damage to the inner wall of the heating well". The specific factors leading to the susceptibility of the inner wall of the heating well to damage are as follows: salt spray condensed on the inner wall of the heating well evaporates after the heating well begins to heat up, and the salt residue remaining on the inner wall corrodes the inner wall under high-temperature conditions, leading to susceptibility to damage. Solving these factors can improve the corrosion resistance of the inner wall of the heating well. To achieve this effect, this disclosure further provides an anti-corrosion coating solution for the inner wall of the heating well. On one hand, Hastelloy is used to adapt to the long-term operating temperature of the heating well at 950°C and above. On the other hand, a coating mainly composed of polytetrafluoroethylene resin and ceramic particles is sprayed onto the inner wall of the heating well, reducing the possibility of direct contact between salt and the inner wall of the heating well, and reducing the corrosive effect of high salinity and high temperature environments on the inner wall of the heating well. This improves the corrosion resistance of the inner wall of the heating well.

[0049] In addressing the technical issue of easily damaged inner walls of heated wells, the application scenario—high humidity and salinity, such as coastal areas with high salt spray—often presents the following additional technical problem: the heat dissipation components and internal electronic components of the control system are susceptible to salt spray corrosion, leading to easy damage to the control system. Considering the following requirements for this application scenario—adaptability to long-term operation under high salt spray conditions—we decided to adopt the following solution: Optionally, the outer shell of the aforementioned dehumidifying cabinet may be provided with ventilation holes. These ventilation holes can be circular or square through-holes, with a diameter of 50-80mm. The number can be determined according to the volume of the dehumidifying cabinet, for example, 1-2 holes. These holes are used to introduce outside air, cooperating with subsequent components to achieve ventilation, heat dissipation, and air purification, creating a suitable working environment for the aforementioned control component 5 inside the cabinet. A ventilation filter component can be embedded within the ventilation holes. This ventilation filter component can be a core component for air purification, and can be cylindrical or square-column shaped, with dimensions adapted to the ventilation holes. It can filter the air entering the dehumidifying cabinet, removing impurities such as salt spray, moisture, and dust, reducing the impact of corrosive substances on the electronic components inside the cabinet. A fluororubber sealing gasket can be provided at the connection between the ventilation filter component and the ventilation holes. The fluororubber sealing gasket can be annular, with a thickness of 3-5mm. The aforementioned fluororubber gasket possesses excellent weather resistance, corrosion resistance, and elastic sealing properties. It can tightly fill the tiny gaps between the ventilation filter assembly and the inner wall of the ventilation hole, reducing the infiltration of unfiltered, humid, and salty air through the gaps. It can also mitigate the impact of vibrations during equipment operation on the connection points. The aforementioned ventilation filter assembly can be a composite structure, consisting of, from the outside in, a primary metal filter, an activated carbon adsorption layer, an ion exchange resin desalination layer, and a hydrophobic material filter. The primary metal filter can be made of 304 stainless steel, with a pore size of 50-100 μm and uniformly distributed mesh, used to intercept large particles of dust, insects, and other debris in the air. The activated carbon adsorption layer can be made of granular activated carbon, with a thickness of 20-30 mm, used to adsorb gaseous moisture in the air. The ion exchange resin desalination layer can be a functional layer made primarily of strongly acidic cation exchange resin, which can remove sodium, chloride, and other salt ions from the air through ion exchange, reducing the risk of salt spray corrosion to control component 5. The aforementioned hydrophobic filter screen can be made of polytetrafluoroethylene (PTFE), which has excellent hydrophobic properties and can be used to block the penetration of liquid water vapor in the air, further improving the dryness of the incoming air. The aforementioned ventilation filter assembly can be detachably embedded in the aforementioned ventilation holes. The detachable connection method can be a snap-fit ​​type or a rotary thread type, and the outer edge of the aforementioned ventilation filter assembly can be provided with anti-slip protrusions for easy gripping, facilitating maintenance work such as cleaning and replacing the filter layer. An air intake fan can be provided on the outside of the aforementioned dehumidifying cabinet, and the air intake fan can be installed in a position corresponding to the aforementioned ventilation holes. The aforementioned air intake fan can be an axial flow fan, fixed to the outside of the ventilation holes by a metal bracket, with the fan blades aligned with the aforementioned ventilation filter assembly. When the aforementioned air intake fan is working, it can generate a directional airflow, pressurizing the outside air and sending it into the aforementioned ventilation filter assembly, providing a continuous air source for the interior of the aforementioned dehumidifying cabinet, while increasing the airflow velocity through the aforementioned ventilation filter assembly and improving filtration efficiency. An exhaust port can also be provided on the outer shell of the aforementioned dehumidifying cabinet.The aforementioned exhaust vent can be located on the opposite side of the outer shell of the dehumidifying cabinet from the ventilation holes, and its shape can be consistent with the ventilation holes. It is used to exhaust the air inside the dehumidifying cabinet after heat exchange, forming a complete ventilation loop and reducing the risk of temperature and humidity buildup due to stagnant air inside the cabinet. A one-way airflow valve can be embedded inside the exhaust vent, and an exhaust fan can be installed inside the dehumidifying cabinet corresponding to the position of the exhaust vent. The one-way airflow valve can be a diaphragm structure made of elastic silicone rubber, allowing air to flow only unidirectionally from the inside of the dehumidifying cabinet to the outside. When the exhaust fan stops working, the diaphragm can close under its own elasticity, preventing humid and salty air and impurities from entering the cabinet through the exhaust vent. The exhaust fan can be the same model as the intake fan and is installed inside the exhaust vent via a bracket. When working, it generates negative pressure suction, accelerating the exhaust of air from the cabinet. Working in conjunction with the intake fan, it forms an air circulation, quickly removing the heat generated by the control component 5 and the moisture accumulated inside the cabinet. The aforementioned dehumidifying cabinet can be equipped with a humidity sensor, a temperature sensor, and a salinity sensor that are communicatively connected to the control component 5. The humidity sensor can be a capacitive humidity sensor, installed in the middle of the cabinet to collect humidity data of the air inside. The temperature sensor can be a platinum resistance temperature sensor, installed near the control component 5 to improve the accuracy of temperature detection. The salinity sensor can be a salinity sensor, installed next to the ventilation opening, to monitor the salinity of the filtered air entering the cabinet in real time. The humidity sensor, temperature sensor, and salinity sensor can all communicate with the control component 5 via wired transmission, transmitting the collected parameters to the control component 5 in real time to provide data support for ventilation, heat dissipation, and protection control. The control component 5 can be configured to control the intake fan and exhaust fan to ventilate and dissipate heat from the dehumidifying cabinet in response to reaching the heat dissipation start-up standard. During the ventilation and heat dissipation process of the aforementioned dehumidifying cabinet, the humidity and salinity values ​​inside the cabinet can be detected in real time using the aforementioned temperature sensor and salinity concentration sensor. The heat dissipation start-up standard is determined when the temperature detected by the aforementioned temperature sensor exceeds a preset temperature threshold (e.g., 40°C). That is, when the aforementioned control component 5 detects that the temperature exceeds the preset temperature threshold through the aforementioned temperature sensor, it determines that the heat dissipation start-up standard has been met. After the aforementioned control component 5 determines that the heat dissipation start-up standard has been met, it sends a start command to the aforementioned intake fan and the aforementioned exhaust fan. Outside air is pressurized by the aforementioned intake fan and enters the aforementioned ventilation and filtration component. After being filtered through multiple stages to remove impurities, salt mist, and moisture, it enters the interior of the aforementioned dehumidifying cabinet and exchanges heat with the high-temperature air. Subsequently, under the negative pressure of the aforementioned exhaust fan, the air carrying heat and moisture is discharged from the aforementioned exhaust port through the aforementioned one-way air flow valve, thereby achieving cooling and dehumidification inside the cabinet.During this process, the control component 5 can control the temperature sensor and the salinity concentration sensor to continuously collect data and feed it back to the control component 5. When the salinity value or humidity value is detected to exceed the safety threshold, an early warning can be triggered to remind staff to maintain the ventilation and filtration components in a timely manner.

[0050] The above-described optional embodiments, as an inventive point of this disclosure, solve the technical problem that "the heat dissipation components and internal electronic components of the control component are susceptible to salt spray corrosion, leading to easy damage to the control component." The specific factors causing easy damage to the control component are as follows: In high salt spray and high humidity environments, the concentration of salt ions in the air is high and carries a large amount of moisture. When the control component dissipates heat, it needs to introduce outside air. Unfiltered air directly contacts the heat dissipation components and electronic components, and salt ions easily adhere to the surface, forming a corrosive medium, leading to component corrosion, poor contact, or even short circuits. Solving these factors can improve the service life and long-term operational stability of the control component in high salt spray environments. To achieve this effect, this disclosure also provides a dehumidifying cabinet. A multi-stage filtration system is used to filter the outside air that will undergo heat exchange, reducing corrosive media at the source; a one-way airflow valve is used to block the reverse air intake path at the exhaust port. This improves the service life and long-term operational stability of the control component in high salt spray environments.

[0051] Some embodiments of this disclosure provide an embedding and infiltration treatment device for gas turbine blades, which can improve the durability of gas turbine blades. Specifically, the poor durability of most gas turbine blades is due to the fact that currently used embedding and infiltration treatment devices typically linearly heat the blades directly in an air environment. Directly linearly heating the blades in the absence of a protective gas makes it easy for an oxide layer to form on the blade surface, and thermal stress concentration to occur on the blades. This, in turn, leads to poor adhesion between the infiltrated layer and the blade substrate, making the blades prone to cracking. Based on this, some embodiments of this disclosure provide an embedding and infiltration treatment device for gas turbine blades. The device includes a heating well, a cooling well, a reactor, a control assembly, and a gantry crane. The heating well has heating assemblies on its inner wall; these assemblies are evenly distributed around the center of the heating well; there are at least two heating wells; the gantry crane is positioned above the heating well and the cooling well; both the heating well and the cooling well are configured to accommodate the reactor; the control assembly is communicatively connected to the heating well, the cooling well, and the gantry crane; the control assembly is configured to perform the following steps: in response to the reactor being installed in place, controlling a preset vacuum assembly to evacuate the reactor to a preset vacuum level; controlling a preset gas supply device to inject protective gas into the reactor to achieve a target gas pressure; controlling the heating well to perform gradient heating treatment on the reactor; and controlling the gantry crane to lift the reactor, after gradient heating treatment, to the cooling well for cooling treatment. By introducing protective gas into the reactor and subjecting it to gradient heating, the formation of an oxide layer on the blade surface and the concentration of thermal stress on the blades are reduced. This improves the durability of the gas turbine blades.

[0052] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. An encapsulation and infiltration treatment device for gas turbine blades, characterized in that, The encapsulation and seepage treatment equipment includes a heating well, a cooling well, a reactor, control components, and a gantry crane, wherein... The inner wall of the heating well is equipped with a heating component; The heating components are evenly distributed around the center of the heating well; The number of heating wells is at least two; The gantry crane is located above the heating well and the cooling well; Both the heating well and the cooling well are configured to accommodate the reactor. The control component is communicatively connected to the heating well, the cooling well, and the gantry crane equipment; The control component is configured to perform the following steps: In response to the reactor being installed in place, the preset vacuum assembly is controlled to evacuate the interior of the reactor to a preset vacuum level. The preset gas supply device is controlled to inject protective gas into the reactor to achieve the target gas pressure intensity. The heating well is controlled to perform gradient heating treatment on the reactor; The crane is controlled to lift the reactor, which has undergone gradient heating, to the cooling well for cooling.

2. The encapsulation and infiltration treatment equipment for gas turbine blades according to claim 1, characterized in that, The encapsulation and seepage treatment equipment also includes protective railings; The protective railing is located on top of the heating well and the cooling well; A ladder is provided on one side of the guardrail.

3. The encapsulation and infiltration treatment equipment for gas turbine blades according to claim 2, characterized in that, The encapsulation and seepage treatment equipment also includes a power distribution cabinet; The power distribution cabinet is located below the protective railing.

4. The encapsulation and infiltration treatment equipment for gas turbine blades according to claim 1, characterized in that, The encapsulation and seepage treatment equipment also includes a chiller.

5. The encapsulation and infiltration treatment equipment for gas turbine blades according to claim 1, characterized in that, The reactor includes a furnace body, a furnace cover, and a material support frame; The furnace body is configured to accommodate the material support frame. The furnace cover is equipped with lifting holes.

6. The encapsulation and infiltration treatment equipment for gas turbine blades according to claim 5, characterized in that, The reactor also includes a profiled material cylinder.

7. The encapsulation and infiltration treatment equipment for gas turbine blades according to claim 5, characterized in that, The furnace cover is equipped with a pressure gauge.

8. The encapsulation and infiltration treatment equipment for gas turbine blades according to claim 1, characterized in that, The heating well is provided with an insulation layer on its outer side; The insulation layer includes a heat-resistant base layer, a core insulation layer, and a protective sealing layer. The heat-resistant base layer is made of aluminum silicate fiber felt, and the heat-resistant base layer is fixed to the outer wall of the heating well by anchors made of zirconia material. The core insulation layer is a nano-insulation board, and the core insulation layer is closely attached to the heat-resistant base layer; The protective sealing layer is made of stainless steel and is bonded to the core insulation layer. The core insulation layer is also embedded with a temperature sensor that is connected to the control component in real time to obtain the internal temperature of the core insulation layer. The control component is configured to trigger a preset audible and visual alarm device to issue a warning in response to detecting an abnormal upward trend in the internal temperature of the core insulation layer.

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