Vacuum thin-wall water cooling pipe structure and machining method thereof

Abstract

The invention discloses a vacuum thin-wall water-cooled pipe structure and a processing method thereof, and the vacuum thin-wall water-cooled pipe comprises a pipe body which comprises an inner pipe and an outer pipe; the integrated flanges are arranged at the two ends of the pipe body; wherein the thickness of the integrated flange is increased, the integrated flange is inserted between the inner pipe and the outer pipe, and the pipe body and the integrated flange are integrally welded after being assembled. The problem of weld penetration possibly occurring in the welding process of the vacuum thin-wall water-cooled pipe is effectively solved, and the percent of pass of products is increased. By optimizing the flange structure and the welding process, the manufacturing process is simplified, and the production cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum equipment manufacturing, in particular to a vacuum thin-wall water-cooling pipe structure and a processing method thereof. Background Art

[0002] In the field of vacuum equipment, some vacuum chambers need to be connected with vacuum flanges and pipes. Some chambers have high-pressure and high-temperature gases flowing in them. The chambers are usually designed with water channels to cool the equipment by water circulation. Currently, for the pipes connecting the chambers, double-layer pipes are usually used to manufacture water-cooling pipes to cool the pipes for circulating gas.

[0003] The water-cooling pipe is a pipe with two different diameters. The small diameter pipe is used as the inner pipe to transport the gas between the cavities, and the large diameter pipe is sleeved outside the inner pipe as the outer pipe to carry water to cool the pipeline equipment. Usually, the cavity and the pipeline are sealed with a standard vacuum flange, so the connection structure is generally cavity-flange-pipeline-flange-cavity.

[0004] At present, the connection between the cavity and the flange is generally sealed by O-Ring plus a clamp, while the connection between the flange and the pipeline is usually sealed by manual argon arc welding. For example, the "water-cooled load that is easy to weld" disclosed in the Chinese patent literature, with the application number "CN202123021176.X", includes a cylinder and a flange plate that together form an inner cavity, the cylinder is provided with a water inlet and a water outlet, and the flange plate has a plurality of mounting holes; it also includes a plurality of resistor tubes, each resistor tube includes a U-shaped metal outer tube and a resistor core inserted in the outer tube, the resistor core and the outer tube are insulated and separated, and the two ends of the resistor core pass through the two ends of the outer tube. An extension tube made of metal is inserted into each mounting hole, and the extension tube passes through the side of the flange plate away from the cylinder, the outer wall of the extension tube is fitted with the inner wall of the mounting hole of the flange plate, and is sealed and welded, and the ends of each resistor tube pass through different extension tubes, and the outer wall of the resistor tube is fitted with the inner wall of the extension tube, and is sealed and welded.

[0005] Although the above solution does not require CNC machining of welding grooves on the flange plate, the cost is low and the flange plate is easy to process, but the flange and pipeline connection requires full welding of the inner ring for sealing, and the welding process can only be performed by manual argon arc welding by electric welders. Figure 1 As shown in FIG. 1 ), there are a double-layer pipe body with an inlet and outlet nozzle 4.0 welded on an outer pipe 3.0, which still has many problems: Disadvantage 1: Since the welding step of the standard flange 1.0 is too shallow, the welding workers need to ensure that the weld is full but not push it too high to interfere with the sealing bracket. This is a test of the welding workers' operational proficiency and the yield rate is low.

[0006] Disadvantage 2: After the inner ring is fully welded, the outer ring needs to be fillet welded, and the standard flange is fixed to the outer ring by spot welding. However, since the inner ring is fully welded, the standard flange will be deformed, and the molten inner ring weld will be stretched during the spot welding of the outer ring. The welding is better when using materials with high melting points such as stainless steel, but for materials with low melting points such as aluminum, the flange is easily welded during welding, causing the entire flange and water cooling pipe to be scrapped.

[0007] Disadvantage 3: The outer tube 3.0 and the inner tube 2.0 of the water-cooling tube use the ring plug 5.0 plus corner welding method, so sometimes when welding the ring plug, it is easy to interfere with the flange, increasing the difficulty of welding.

[0008] In summary, for water-cooling pipes made with standard flanges, the pipe wall is generally thinner, about 3 mm, because it needs to meet cooling requirements. However, a pipe wall that is too thin is difficult to meet welding requirements. Summary of the invention

[0009] In order to overcome the problems of welding penetration, pores, high scrap rate, complicated welding operation and cumbersome process flow in the current vacuum water cooling pipe welding, the present invention provides a vacuum thin-wall water cooling pipe structure and a processing method thereof, which effectively solves the welding penetration problem that may occur in the vacuum thin-wall water cooling pipe structure during welding and improves the qualified rate of the product. By optimizing the flange structure and welding process, the manufacturing process is simplified and the production cost is reduced.

[0010] In order to achieve the above object, the present invention adopts the following technical solutions: A vacuum thin-wall water-cooling tube structure comprises: a tube body, including an inner tube and an outer tube; an integrated flange, arranged at both ends of the tube body; wherein the integrated flange is thickened and inserted between the inner tube and the outer tube, wherein the tube body and the integrated flange are integrally welded after being assembled.

[0011] By thickening the integrated flange and inserting it between the inner tube and the outer tube, the heat generated during welding is effectively dispersed, preventing flange deformation or welding penetration caused by heat concentration. It also helps to reduce the thermal shock of welding on the flange and reduce the heat-affected zone of the inner tube weld, thereby improving the quality of the weld and the stability of the overall structure. Such a structural design helps to improve the stability and strength of the entire water-cooling pipe. After the pipe body and the integrated flange are assembled, integral welding is performed to ensure the sealing of the connection and the integrity of the structure. Through integral welding, the number of welding points can be reduced, thereby reducing the risk of potential leakage. At the same time, the thickened flange can also improve the pressure resistance of the water-cooling pipe, making it more suitable for high-pressure and high-temperature applications.

[0012] Preferably, the integrated flange includes a flange portion and a plug portion, and the plug portion is integrally formed with the flange portion; the plug portion is inserted between the inner tube and the outer tube. The integrally formed flange portion and plug portion are designed to ensure the stable operation of the water-cooling tube under high pressure and high temperature environment, while also simplifying the manufacturing and assembly process, providing a more compact and efficient water-cooling tube structure, reducing potential weak links, that is, reducing the possible leakage points at the connection between the flange and the plug, because in traditional designs, these two parts are often connected by welding or other means, which not only increases the risk of leakage, but also increases the complexity of assembly. The plug portion is located between the inner tube and the outer tube, which helps to strengthen the overall structure of the tube body and can effectively prevent thermal deformation, because the plug portion can evenly disperse the thermal stress between the inner tube and the outer tube.

[0013] Preferably, a raised step is provided at the connection between the integrated flange and the inner tube, and the raised step abuts against the end face of the inner tube. The raised step is designed to solve the deformation and leakage problems that may occur in traditional welding connections. In a high-pressure and high-temperature working environment, the water-cooling pipe needs to withstand greater thermal stress, which may lead to a decrease in the sealing of the connection between the flange and the inner tube. The design of the raised step allows the connection between the flange and the inner tube to be tighter and more stable. Due to the presence of the step, the end face of the inner tube can directly contact the step of the flange, forming a lock to physically enhance the firmness of the connection. In addition, the step can serve as a buffer for thermal expansion and reduce structural stress caused by temperature changes.

[0014] Preferably, at least two water nozzles are included, a water cavity is provided between the inner tube and the outer tube, and the water nozzle is welded to the outer tube and connected to the water cavity. Traditional water cooling systems may require complex pipes and multiple connection points, which not only increases the complexity of the system, but also increases the risk of leakage. By directly arranging the water nozzle on the water cooling pipe, the pipe connection is simplified and the potential leakage points are reduced. At the same time, this direct connection method also helps to improve the flow efficiency of the coolant, because the coolant can directly enter and flow out of the water cavity without passing through additional pipes and connectors. Since the water nozzle is directly welded to the water cooling pipe, maintenance personnel can more easily check and replace the water nozzle without disassembling the entire water cooling system.

[0015] Preferably, the end of the integrated flange close to the water passage cavity is provided with a pressure balancing part, and the pressure balancing part can reduce the water hammer effect. In the water cooling pipe system, the design of the pressure balancing part reduces the water hammer effect by slowing down the rapid change of the fluid velocity. The balancing part adds a specific structural design, such as a complex shape of the water channel or a damping element, to the end of the flange close to the water passage cavity, so that the fluid can transition more smoothly when passing through this area, reducing the impact caused by the pressure surge.

[0016] Preferably, the pressure balancing part includes a shock absorbing groove, and the wall of the shock absorbing groove is provided with a kinetic energy dispersing groove along the length direction of the water chamber, and the kinetic energy dispersing groove is spiral / corrugated. The design of the shock absorbing groove utilizes the principle of fluid mechanics to slow down the rapid change of fluid velocity by changing the flow path of the fluid through the flange part. The spiral or corrugated groove structure provides additional flow resistance and path tortuosity when the fluid passes through, so that the fluid velocity is gradually reduced when reaching the pressure balancing part, rather than suddenly decelerating. This design slows down the momentum change of the fluid, thereby reducing the water hammer effect. In addition, this design also helps to reduce maintenance requirements and costs because it integrates the required shock absorbing function directly into the structure of the water cooling pipe.

[0017] By reducing the water hammer effect, the wear and pressure fluctuations on the connections, pipes and components within the system are significantly reduced, thereby reducing the risk of potential leaks and damage.

[0018] Preferably, the pressure balancing part includes an energy absorbing drum, which includes an elastic tympanic membrane arranged corresponding to the water passage cavity; a micro-negative pressure cavity is included between the elastic tympanic membrane and the integrated flange. The presence of the micro-negative pressure cavity allows the tympanic membrane to absorb and release pressure when the water hammer effect occurs, thereby reducing the impact on the water cooling pipe system. When the water hammer effect causes a sudden increase in pressure, the elastic tympanic membrane will bulge, and the pressure will be absorbed and stored in the micro-negative pressure cavity; when the pressure decreases, the tympanic membrane will contract, and the previously stored pressure will be released, thereby achieving pressure balance and buffering. This solution provides a more efficient and active pressure balancing mechanism. In traditional water cooling pipe systems, the water hammer effect may cause pipe rupture or damage to connectors. By integrating the energy absorbing drum in the pressure balancing part, pressure fluctuations can be more effectively absorbed and dispersed, reducing the impact and wear on the water cooling pipe system, extending the service life of the equipment, and thus reducing maintenance costs and downtime.

[0019] The present application also discloses a method for processing the above-mentioned vacuum thin-wall water-cooling pipe structure, comprising the following steps: Step A: machining an integrated flange with increased thickness; Step B: Processing the inner tube; Step C: processing the outer tube; Step D: Process two water spouts; Step E: Insert the inner tube into the integrated flange, sleeve the outer tube onto the outside of the inner tube, and align the water nozzle with the through hole on the outer tube to complete the assembly; Step F: perform overall welding, the welding positions include the inner pipe and the integrated flange, the outer pipe and the integrated flange, and the outer pipe and the faucet.

[0020] The method first involves machining an integrated flange with increased thickness to ensure structural strength and durability. Next, the inner tube is machined to meet size and quality requirements, and the outer tube is machined to ensure that it matches the inner tube while leaving enough space to accommodate the integrated flange and the faucet. The faucet must be machined precisely to match the through hole on the outer tube. In the assembly step, the inner tube is first inserted into the integrated flange, the outer tube is then sleeved on the outer tube, and the faucet is assembled to the outer tube accordingly. Finally, the overall welding is performed, including the connection between the inner tube and the integrated flange, the outer tube and the integrated flange, and the outer tube and the faucet.

[0021] Preferably, before step D, the integrated flange, inner pipe, outer pipe and water nozzle are chemically cleaned respectively. This improves the cleanliness during welding and significantly improves the welding quality. By reducing welding defects such as bubbles, cracks or uneven welds, the overall reliability and durability of the system are enhanced. In the production process, this can reduce rework caused by welding defects and improve production efficiency.

[0022] Preferably, the connection between the inner tube and the outer tube and the connection between the outer tube and the integrated flange are both made by groove welding. This welding method provides a stronger connection strength due to a larger welding area, which helps to improve the stability and durability of the overall structure of the water-cooling pipe. During the operation of the water-cooling system, changes in water pressure and temperature may cause pressure on the pipe joints, and groove welding can ensure that these connection points have high reliability even under high pressure environments. Secondly, groove welding can usually achieve smoother and neater welds, which not only improves the appearance of the product, but also reduces potential stress concentration points, helping to reduce the risk of welding defects.

[0023] This solution has the following beneficial effects: The thickened design of the integrated flange and the overall welding process ensure the sealing and strength of both ends of the pipe body, reduce the risk of leakage, and improve the reliability of the overall system.

[0024] The raised step in the design abuts against the end face of the inner tube, which enhances the connection strength between the inner tube and the outer tube and improves the pressure resistance of the overall water-cooling tube.

[0025] The energy-absorbing drum and micro-negative pressure chamber arranged in the pressure balance part provide a highly efficient pressure absorption and release mechanism, effectively reducing the water hammer effect and enhancing the stability of the system.

[0026] The spiral or corrugated design of the shock absorbing groove disperses the kinetic energy of the fluid, reduces the vibration and impact during the flow of the fluid, and thus prolongs the service life of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the structure of a traditional water-cooling tube.

[0028] Figure 2 It is a structural schematic diagram of the water cooling tube structure in the present invention.

[0029] Figure 3 For Example 1 Figure 2 A partial enlarged view of point A.

[0030] Figure 4 For Example 2 Figure 2 A partial enlarged view of point A.

[0031] In the figure: 1.0 standard flange, 2.0 inner pipe, 3.0 outer pipe, 4.0 inlet and outlet nozzles, 5.0 annular plug; 1 integrated flange, 11 flange part, 12 plugging part, 2 inner tube, 3 outer tube, 4 water nozzle, 5 shock absorbing groove, 6 energy absorbing drum, 61 elastic eardrum, 62 micro negative pressure chamber, 7 heightening step. DETAILED DESCRIPTION

[0032] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions.

[0033] Example 1 like Figure 2 As shown, a vacuum thin-wall water-cooling pipe structure comprises: a pipe body, including an inner pipe and an outer pipe; an integrated flange 1, arranged at both ends of the pipe body; wherein the integrated flange is thickened and inserted between the inner pipe 2 and the outer pipe 3, wherein the pipe body and the integrated flange are integrally welded after being assembled. The integrated flange comprises a flange portion 11 and a plug portion 12, wherein the plug portion and the flange portion are integrally formed; the plug portion is inserted between the inner pipe and the outer pipe. A heightened step 7 is provided at the connection between the integrated flange and the inner pipe, wherein the heightened step 7 abuts against the end face of the inner pipe.

[0034] By thickening the integrated flange and inserting it between the inner tube and the outer tube, the heat generated during welding is effectively dispersed, preventing flange deformation or welding penetration caused by heat concentration. It also helps to reduce the thermal shock of welding on the flange and reduce the heat-affected zone of the inner tube weld, thereby improving the quality of the weld and the stability of the overall structure. Such a structural design helps to improve the stability and strength of the entire water-cooling pipe. After the pipe body and the integrated flange are assembled, integral welding is performed to ensure the sealing of the connection and the integrity of the structure. Through integral welding, the number of welding points can be reduced, thereby reducing the risk of potential leakage. At the same time, the thickened flange can also improve the pressure resistance of the water-cooling pipe, making it more suitable for high-pressure and high-temperature applications.

[0035] The one-piece flange and plug design is designed to ensure the stable operation of the water-cooling pipe under high pressure and high temperature environment, and also simplifies the manufacturing and assembly process, providing a more compact and efficient water-cooling pipe structure, reducing potential weak links, that is, reducing the possible leakage points at the connection between the flange and the plug, because in traditional designs, these two parts are often connected by welding or other means, which not only increases the risk of leakage, but also increases the complexity of assembly. The plug is located between the inner tube and the outer tube, which helps to strengthen the overall structure of the tube body and can effectively prevent thermal deformation because the plug can evenly disperse the thermal stress between the inner tube and the outer tube.

[0036] In this embodiment, the design of the heightened step is to solve the deformation and leakage problems that may occur in traditional welding connections. In a high-pressure and high-temperature working environment, the water-cooling pipe needs to withstand greater thermal stress, which may cause the sealing of the connection between the flange and the inner tube to decrease. The design of the heightened step allows the connection between the flange and the inner tube to be tighter and more stable. Due to the presence of the step, the end face of the inner tube can directly contact the step of the flange, forming a lock to physically enhance the firmness of the connection. In addition, the step can serve as a buffer for thermal expansion and reduce the structural stress caused by temperature changes.

[0037] The vacuum thin-walled water-cooling tube structure includes at least two water nozzles, a water cavity is provided between the inner tube and the outer tube, and the water nozzle is welded to the outer tube and connected to the water cavity. Traditional water cooling systems may require complex pipelines and multiple connection points, which not only increases the complexity of the system, but also increases the risk of leakage. By directly setting the water nozzle on the water cooling tube, the pipeline connection is simplified and the potential leakage points are reduced. At the same time, this direct connection method also helps to improve the flow efficiency of the coolant, because the coolant can directly enter and flow out of the water cavity without passing through additional pipes and connectors. Since the water nozzle is directly welded to the water cooling tube, maintenance personnel can more easily inspect and replace the water nozzle without disassembling the entire water cooling system.

[0038] In addition, a pressure balancing part is provided at one end of the integrated flange close to the water passage chamber, and the pressure balancing part can reduce the water hammer effect. In the water-cooling pipe system, the design of the pressure balancing part reduces the water hammer effect by slowing down the rapid change of the fluid velocity. In this embodiment, the pressure balancing part includes a shock-absorbing groove 5, and the groove wall of the shock-absorbing groove 5 is distributed with a kinetic energy dispersion groove along the length direction of the water passage chamber, and the kinetic energy dispersion groove is spiral / corrugated. The design of the shock-absorbing groove utilizes the principle of fluid mechanics to slow down the rapid change of the fluid velocity by changing the flow path of the fluid through the flange part. The spiral or corrugated groove structure provides additional flow resistance and path tortuosity when the fluid passes through, so that the fluid velocity is gradually reduced when it reaches the pressure balancing part, rather than suddenly decelerating. This design slows down the momentum change of the fluid, thereby reducing the water hammer effect. In addition, this design also helps to reduce maintenance requirements and costs because it integrates the required shock-absorbing function directly into the structure of the water-cooling pipe.

[0039] By reducing the water hammer effect, the wear and pressure fluctuations on the connections, pipes and components within the system are significantly reduced, thereby reducing the risk of potential leaks and damage.

[0040] In this embodiment, the design purpose of the vacuum thin-wall water-cooling tube structure system is to achieve a high-efficiency and high-stability heat exchange process, while reducing the use of materials and lowering the overall weight and cost of the system.

[0041] In this embodiment, first, the entire water-cooling pipe system is composed of an inner pipe, an outer pipe and an integrated flange. Both the inner pipe and the outer pipe are thin-walled metal pipes designed with a circular cross-section. An annular space is formed between the inner pipe and the outer pipe, forming a circulation channel for the coolant. In order to ensure the stability and sealing of the structure, integrated flanges are installed at both ends of the pipe body and connected to the pipe body through a precise welding process. The design of the integrated flange adopts a thickened structure, which not only enhances the pressure resistance of the pipe body, but also provides sufficient strength to resist the internal pressure generated by the flow of coolant. One end of the inner pipe is closed, and the other end is connected to the water chamber; both ends of the outer pipe are connected to the external environment. Figure 3 As shown in the figure, shock-absorbing grooves are designed in the connection area between the inner tube and the outer tube. These grooves have a spiral or corrugated structure and are distributed along the length of the water cavity. The main function of the shock-absorbing grooves is to disperse the kinetic energy of the fluid, reduce the impact of the fluid on the pipe wall when it flows through the pressure balance part, and reduce the impact of the water hammer effect. The design of these grooves makes full use of the principles of vortex and energy dispersion in fluid mechanics, and disperses the energy of the fluid by forming vortices, thereby reducing the impact of the fluid on the pipe wall.

[0042] In the annular space formed between the inner and outer tubes, the coolant undergoes complex fluid dynamics as it flows through. By designing a pressure balance section at one end of the integrated flange, we are able to optimize the flow characteristics of the coolant and improve the heat exchange efficiency. The damping grooves inside the pressure balance section, through their spiral or corrugated shape, guide the coolant to form vortices. These vortices not only help to enhance the heat exchange efficiency, but also help to reduce the vibration and noise generated when the fluid flows through the pressure balance section, thereby improving the operating environment of the entire system.

[0043] Specifically, the manufacturing process starts with the processing of the integrated flange, whose thickened design ensures sufficient mechanical strength and sealing performance. The processing of the integrated flange requires precision CNC machine tools to ensure the dimensional accuracy and surface finish of the flange. Next, the inner and outer pipes are also processed accordingly. These pipe materials are usually made of corrosion-resistant and high-temperature resistant metal materials, such as stainless steel or copper alloy. The size and wall thickness of the inner and outer pipes must be precisely controlled to ensure the sealing and pressure resistance of the entire system. Subsequently, the assembly stage begins, where the inner pipe is first inserted into the integrated flange, and then the outer pipe is sleeved on the outside of the inner pipe. This step requires precise alignment and positioning to ensure the correct fit between the various components. The connection between the outer and inner pipes is usually made by groove welding, which can increase the welding area and improve the strength of the welded joint. Before welding, all components are chemically cleaned to remove oil and oxide layers on the surface to improve welding quality.

[0044] Welding is a key step in the entire manufacturing process, which requires precise control of welding parameters such as current, voltage and welding speed. During the welding process, the joints between the inner tube and the integrated flange, the outer tube and the integrated flange, and the outer tube and the faucet need to be welded. After welding, non-destructive testing, such as X-ray testing or ultrasonic testing, is performed to ensure the quality of the welding. Therefore, this plan also includes detailed requirements for the welding process. The connection between the inner tube and the outer tube, and the outer tube and the integrated flange adopts groove welding technology, which can improve the strength and sealing of the welded joint. During the welding process, the welding area is chemically cleaned to ensure the surface cleanliness before welding, reduce welding defects and improve welding quality.

[0045] During installation, the vacuum thin-wall water-cooling tube structure needs to be connected to other components of the cooling system, such as the radiator, water pump, and control system. During installation, it is necessary to ensure the sealing of all joints to prevent coolant leakage. After installation, the entire cooling system is pressure tested to check for leaks. During use, the working principle of the vacuum thin-wall water-cooling tube structure is to absorb and transfer heat by circulating coolant in the inner tube. The coolant circulates in the inner tube and reduces the temperature through heat exchange between the inner and outer tubes. This process requires precise control of the flow rate and pressure of the coolant to ensure optimal heat exchange efficiency.

[0046] Example 2 In this embodiment, the design of the entire vacuum thin-walled water-cooling tube structure takes into account the principles of fluid dynamics and thermodynamics to achieve efficient and stable heat exchange. The inner tube and the outer tube are connected by an integrated flange to form a sealed coolant channel. In this structure, the coolant flows in the inner tube and heat is exchanged through the water cavity between the inner and outer tubes. In order to further improve the heat exchange efficiency, the design includes multiple water nozzles, which are welded on the outer tube and connected to the water cavity, optimizing the flow path and flow distribution of the coolant. In the overall welding process, special emphasis is placed on chemical cleaning of the integrated flange, inner tube, outer tube and water nozzle to ensure surface cleanliness before welding to reduce welding defects and improve welding quality. The selection of welding position is also very critical. The welding between the inner tube and the integrated flange, the outer tube and the integrated flange, and the outer tube and the water nozzle all adopts groove welding to enhance the strength and sealing of the welded joint.

[0047] In addition, those skilled in the art may consider combining the energy absorbing drum 6 with different damping structures, such as adding damping materials in the micro-negative pressure chamber, or adjusting the material and thickness of the elastic tympanic membrane to adapt to different working pressures and environmental conditions. In addition, it is also possible to explore integrating more sensors and control elements in the pressure balance part to achieve real-time monitoring and adjustment of the system pressure, further improving the intelligence and automation level of the system.

[0048] In this embodiment, the processing of the water-cooling pipe includes the following steps: The integrated flange structure in the welding process plays a vital role in the performance of the entire water-cooling pipe. Unlike traditional corner welding, the weld between the flange and the inner tube in this solution adopts groove welding. This change not only increases the strength of the welding, but also greatly improves the reliability of the welding. Based on many experiments, it was determined that the height of the step between the flange and the inner tube is 7mm, which is the most suitable. This height can not only ensure the convenience of welding, but also effectively avoid the interference of the weld on the flange surface, thereby ensuring the welding quality. By combining the flange and the plug into one, and increasing the limit of each part by the step, and the mutual limit between each sub-component, the welding process after assembly is more direct and simple. Such a design reduces other machining processes, thereby reducing the overall production cost and time.

[0049] During the welding process, the integrated flange structure effectively avoids the problem of easy penetration during welding. This is especially important for the manufacture of thin-walled water-cooling pipes. After conventional flange welding, the product qualification rate is usually only about 30%, while the qualified rate of water-cooling pipes welded with the integrated flange of this solution can reach more than 90%. This significant improvement not only reduces the scrap rate, but also improves production efficiency. In addition, due to the integrated design of the structure, the process flow is reduced, making the welding process more convenient. This design not only simplifies the production process, but also reduces the complexity of operation, further improving production efficiency.

[0050] In this embodiment, welding is a key step in connecting the inner tube to the integrated flange, the outer tube to the integrated flange, and the outer tube to the water nozzle. The application of groove welding and the precise control of welding height make the welded joint not only high in strength and good in sealing, but also beautiful in appearance. After welding is completed, the pressure test is used to verify the sealing and integrity of the welded joint to ensure that each water-cooling pipe can operate stably in actual use.

[0051] like Figure 4 As shown, the difference between this embodiment and embodiment 1 is that the pressure balance part in the vacuum thin-wall water-cooling pipe structure adopts an energy-absorbing drum 6, and the energy-absorbing drum includes an elastic tympanic membrane 61 corresponding to the water-passing cavity; and a micro-negative pressure cavity 62 is included between the elastic tympanic membrane and the integrated flange. Energy-absorbing drum and corresponding micro-negative pressure cavity structure. The energy-absorbing drum is the core component of the pressure balance part, which is realized by arranging an elastic tympanic membrane at one end of the integrated flange. The elastic tympanic membrane forms a closed space relative to the water-passing cavity, namely the energy-absorbing drum. When the coolant flows through the pressure balance part, the elastic tympanic membrane can expand and contract according to the pressure fluctuation of the coolant, thereby absorbing and dispersing the pressure shock. This design enables the system to respond to pressure changes more smoothly and reduce the pressure fluctuation and water hammer effect caused by the sudden change of pressure. The design of the micro-negative pressure cavity is matched with the energy-absorbing drum. The micro-negative pressure cavity is located between the elastic tympanic membrane and the integrated flange, which provides an additional buffer space. Under normal operating conditions, the pressure inside the micro-negative pressure cavity is slightly lower than the external environment, which helps to maintain the stability of the energy-absorbing drum and further enhances the system's ability to absorb pressure fluctuations. Under the action of high pressure, the micro-negative pressure chamber can provide additional support for the energy-absorbing drum to prevent the eardrum from rupturing due to excessive pressure, thereby improving the safety and reliability of the system.

[0052] Example 3 Different from Examples 1 and 2, the pressure balancing part in this embodiment adopts a hydraulic shock absorber integrated into the flange, aiming to achieve a higher level of pressure balance. This embodiment describes in detail the integration method of the hydraulic shock absorber, including the design, manufacturing and installation steps, as well as how to ensure dimensional feasibility and detailed implementation plan.

[0053] Design of hydraulic shock absorber: First, the size of the hydraulic shock absorber is carefully designed to ensure that it can be integrated into the flange without affecting the functions of other components. Design a small hydraulic container with an internal volume of about 50-100 ml, which is filled with compressible hydraulic oil or nitrogen. One end of the container is connected to a movable piston, and the other end is fixed to the inner side of the flange.

[0054] There are tiny pressure sensing holes on both sides of the container, which are connected to the pressure sensing area of ​​the water cooling pipe to detect changes in system pressure.

[0055] Flange design: The design of the flange needs to take into account the integration of the hydraulic shock absorber, so a certain amount of space needs to be reserved to accommodate the shock absorber assembly. The thickness of the flange needs to be appropriately increased to ensure sufficient strength and stability to accommodate the hydraulic shock absorber.

[0056] In this embodiment, the manufacture of the hydraulic shock absorber includes the molding of the hydraulic container, the assembly of the piston, and the processing of the connecting pipe. The hydraulic container can be manufactured by precision casting or machining technology to ensure the sealing and accuracy of the container. The piston is usually made of high-strength metal or engineering plastic to withstand the pressure of the hydraulic oil. The manufacture of the flange requires high-precision processing technology, such as CNC milling or laser cutting, to ensure dimensional accuracy and flatness. The installation area reserved for the hydraulic shock absorber on the flange needs to be finely processed to ensure that the shock absorber can be accurately positioned and fixed.

[0057] Before assembling the flange, install the hydraulic shock absorber. Fix the hydraulic container of the hydraulic shock absorber in the installation area reserved in the flange, and ensure that the piston can move freely inside the container. Connect the pressure sensing hole of the hydraulic shock absorber and the pressure sensing area of ​​the water cooling pipe to ensure that the system can accurately respond to pressure changes. Insert the inner and outer pipes into the corresponding parts of the integrated flange respectively, and ensure that they fit tightly with the sealing surface of the flange. Use groove welding technology to connect the flange to the inner and outer pipes to ensure the strength and sealing of the welding. After welding is completed, clean and inspect the welding area to ensure that there are no welding defects.

[0058] After all components are installed, pressure test the system to verify that the hydraulic shock absorbers can effectively absorb pressure surges.

[0059] During the test, different working pressure conditions are simulated to ensure that the hydraulic shock absorber can work properly under various conditions. The absorption capacity and response speed of the hydraulic shock absorber are evaluated to ensure that they meet the design requirements. The durability and stability of the flange and the hydraulic shock absorber are checked to ensure long-term reliability. In addition, the hydraulic oil or nitrogen status of the hydraulic shock absorber needs to be checked regularly to ensure that it operates under optimal working conditions. The welding area and connection parts of the flange are checked to ensure that there are no leaks or other damages. And according to the actual operation and feedback, the design of the hydraulic shock absorber and flange is optimized to improve the overall performance and stability of the system.

Claims

1. A vacuum thin-wall water-cooling pipe structure, characterized in that: include: A tube body, comprising an inner tube and an outer tube; Integrated flanges are provided at both ends of the pipe body; The integrated flange is thickened and inserted between the inner tube and the outer tube. Among them, the overall welding is carried out after the pipe body and the integrated flange are assembled.

2. The vacuum thin-wall water-cooling tube structure according to claim 1, characterized in that: The integrated flange comprises a flange portion and a plugging portion, wherein the plugging portion and the flange portion are integrally formed; and the plugging portion is inserted between the inner tube and the outer tube.

3. The vacuum thin-wall water-cooling tube structure according to claim 1, characterized in that: A heightened step is provided at the connection between the integrated flange and the inner tube, and the heightened step abuts against the end surface of the inner tube.

4. The vacuum thin-wall water-cooling tube structure according to any one of claims 1 to 3, characterized in that: The utility model comprises at least two water nozzles, a water cavity is arranged between the inner tube and the outer tube, and the water nozzle is welded to the outer tube and connected to the water cavity.

5. The vacuum thin-wall water-cooling tube structure according to claim 4, characterized in that: A pressure balancing part is arranged at one end of the integrated flange close to the water passage cavity, and the pressure balancing part can reduce the water hammer effect.

6. The vacuum thin-wall water-cooling tube structure according to claim 5, characterized in that: The pressure balancing part comprises a shock absorbing groove, and the wall of the shock absorbing groove is provided with a kinetic energy dispersing groove along the length direction of the water passage cavity, and the kinetic energy dispersing groove is spiral / corrugated.

7. The vacuum thin-wall water-cooling tube structure according to claim 5, characterized in that: The pressure balancing part comprises an energy absorbing drum, and the energy absorbing drum comprises an elastic tympanic membrane arranged corresponding to the water passage cavity; a micro-negative pressure cavity is comprised between the elastic tympanic membrane and the integrated flange.

8. A method for processing a vacuum thin-wall water-cooling pipe structure, characterized in that: The following steps are involved: Step A: machining an integrated flange with increased thickness; Step B: Processing the inner tube; Step C: processing the outer tube; Step D: Process two water spouts; Step E: Insert the inner tube into the integrated flange, sleeve the outer tube onto the outside of the inner tube, and align the water nozzle with the through hole on the outer tube to complete the assembly; Step F: perform overall welding, the welding positions include the inner pipe and the integrated flange, the outer pipe and the integrated flange, and the outer pipe and the faucet.

9. The processing method according to claim 8, characterized in that: Before step D, the integrated flange, inner pipe, outer pipe and faucet are chemically cleaned respectively.

10. The processing method according to claim 8, characterized in that: The connection between the inner tube and the outer tube and the connection between the outer tube and the integrated flange are both made by groove welding.

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