Argon pressure maintaining and cooling integrated equipment for stainless steel pipeline welding

Abstract

The application relates to an argon pressure maintaining and cooling integrated device for stainless steel pipeline welding, and relates to the technical field of metal material welding, which comprises a welding bin, the outside of the welding bin is provided with an argon pressure maintaining mechanism, the inside of the welding bin is provided with a cooling mechanism, the argon pressure maintaining mechanism comprises a gas storage tank, the outside of the gas storage tank is fixedly connected with a blower, the outside of the blower is fixedly connected to the top of the welding bin, the outside bottom side of the welding bin is provided with a filtering assembly, and the outside of the filtering assembly is fixedly connected to the outside of the gas storage tank. The application has the advantages that through an argon circulation system, the gas storage tank, the blower and the filtering assembly are cooperatively operated, the resource utilization efficiency is improved while the welding quality is ensured, argon is delivered to the welding bin by the blower to form a protective gas layer, oxygen is effectively isolated, oxidation during the welding of the stainless steel pipeline is prevented, and the welding process is efficient, environmentally friendly and economical.

Description

Technical Field

[0001] This application relates to the field of metal welding technology, and in particular to an integrated argon gas pressure holding and cooling device for welding stainless steel pipes. Background Technology

[0002] As industrial production continues to advance towards higher precision and reliability, stainless steel pipes, due to their excellent corrosion resistance and mechanical properties, are widely used in chemical, energy, and food industries. Pipe welding, as a crucial step in its manufacturing and installation, directly impacts system operational safety and service life. Argon-shielded welding technology, with its advantages of isolating oxygen and preventing weld oxidation, has become the mainstream choice for stainless steel pipe welding. However, traditional welding equipment has many shortcomings in argon gas pressure holding and post-weld cooling, making it difficult to meet the demands of modern industry for efficient and high-quality welding. Therefore, innovative integrated equipment is urgently needed to overcome these technological bottlenecks.

[0003] A search revealed Chinese patent publication number CN202622210U, which discloses a device for sealing argon-filled shielded welding pipes. The device is characterized by comprising a #1 latex balloon, a #2 latex balloon, a gas guide tube, an argon gas delivery tube, a pressure reducing valve, and aluminum cooling strips. At both sides of the pipe joint, a #2 latex balloon (composed of the #1 latex balloon and two smaller latex balloons) is inflated and expanded to seal the pipe, forming a closed local space. Argon gas is then filled into this space through the gas guide tube, creating an inert gas environment. The balloon gas guide tube is made of PE polyethylene pipe with good flexibility and bendability. The argon gas delivery tube is made of Φ6 stainless steel pipe, 10cm in length. A 400mm×400mm×10mm aluminum cooling strip is applied to both sides of the pipe weld joint. The aluminum cooling strip is composed of 10mm×10mm×10mm small aluminum blocks connected with fiberglass. The advantages of this invention are: simple structure, easy to carry, simple operation, gas saving, and improved welding quality.

[0004] The aforementioned patent specification mentions that "after opening the gas supply valve of the latex balloon and confirming that the latex balloon is fully inflated in the pipeline, the gas supply valve of the stainless steel argon gas supply pipe can be opened to fill it with argon gas. After the argon filling reaches the required level, welding can begin. For ease of operation, the latex balloon can be filled with a portable manual air pump, which is convenient to carry and readily available on the market." The above content can save gas consumption and improve welding quality. However, existing equipment suffers from unstable argon gas pressure holding and untimely cooling, resulting in poor weld quality in some devices. Pressure fluctuations or poor gas circulation in the argon gas supply system can easily create weak areas in the protective gas layer, allowing oxygen from the air to enter and causing localized oxidation of the weld, resulting in defects such as porosity and slag inclusions. Therefore, an integrated argon gas pressure holding and cooling device for stainless steel pipeline welding is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this application is to provide an integrated argon gas pressure holding and cooling device for welding stainless steel pipes, which aims to improve the problem of poor weld quality in some devices.

[0006] The technical solution provided in this application for an integrated argon gas pressure holding and cooling device for welding stainless steel pipes is as follows: An integrated argon gas pressure holding and cooling device for welding stainless steel pipes includes a welding chamber, an internal welding mechanism, an external argon gas pressure holding mechanism, an internal cooling mechanism, an internal fixing mechanism, and a pneumatic sealing door fixedly connected to the external side of the welding chamber. The argon gas pressure holding mechanism includes a gas storage tank, which is fixedly connected to the external side of the welding chamber. A blower is fixedly connected to the external side of the gas storage tank and to the top of the welding chamber. A filter assembly is provided on the bottom side of the external side of the welding chamber and is fixedly connected to the external side of the gas storage tank. The above technical solution involves the operator placing the stainless steel pipe to be welded into the welding chamber, securing it firmly to the support plate using a fixing mechanism, and then activating the cylinder of the pneumatic sealing door to close the door, creating a closed space. The argon gas pressure holding mechanism then begins operation, delivering argon gas from the storage tank to the welding chamber under the action of a blower, forming a protective gas layer on the surface of the pipe to be welded. As argon gas is injected, the mixed gas inside the chamber is discharged from the filter assembly on the bottom outside the welding chamber. The welding mechanism then welds the pipe. After welding, the cooling mechanism cools the inside of the welding chamber, achieving precise pipe fixing, efficient argon gas circulation protection, stable welding, and rapid cooling. This significantly improves the welding quality and efficiency of stainless steel pipes, while reducing argon gas loss and weld defects.

[0007] Preferably, the fixing mechanism includes a sliding bar, the sliding bar is fixedly connected to the outside of the welding chamber, a cylinder is slidably connected to the outside of the sliding bar, a push column is fixedly connected to the driving end of the cylinder, and a transmission connecting rod is rotatably connected to the outside of the push column. By adopting the above technical solution, the operator places the stainless steel pipe to be welded into the welding chamber, and uses the sliding bar fixed inside the welding chamber in the fixing mechanism to slide the sliding block along the sliding bar to adjust it to a suitable position to initially match the pipe diameter; then the cylinder fixed on the sliding block is activated, the cylinder drive end extends the push column, the push column drives the rotatably connected transmission rod to rotate, the transmission rod further links other transmission structures, so that multiple sliding plates tightly clamp the pipe on the support plate from different directions.

[0008] Preferably, the filter assembly includes a filter barrel, the outside of which is slidably connected to the inside of the welding chamber, a replaceable filter element is slidably connected inside the filter barrel, and a detection port is threadedly connected to the outside of the filter barrel. By adopting the above technical solution, during the argon gas pressurization and circulation process, the argon-air mixture discharged from the bottom of the welding chamber flows into a filter barrel that is slidably connected inside the welding chamber. The replaceable filter element inside the filter barrel intercepts and filters the mixture, separating impurities, dust, and trace amounts of oxygen. The purified argon gas then flows back to the storage tank for recycling. When it is necessary to check the condition of the filter element or replace it, the filter element can be quickly disassembled and replaced by unscrewing the inspection port connected to the outside of the filter barrel to observe the clogging status.

[0009] Preferably, the detection port is slidably connected to the outside of the welding chamber, the detection port is fixedly connected to the outside of the valve, and the valve is fixedly connected to the outside of the gas storage tank. By adopting the above technical solution, during the argon gas circulation process, the detection port is slidably connected to the outside of the welding chamber, and its outer side is fixedly connected to the valve, which is fixed to the outside of the gas storage tank. When it is necessary to check the filter element status of the filter assembly, the operator can slide the detection port to align it with the filter barrel and open the detection port to check the degree of filter element blockage. If the filter element needs to be replaced, the valve can be closed simultaneously to cut off the argon gas circulation path, prevent gas leakage, and ensure safe replacement. After the inspection is completed or the filter element is replaced, the detection port is closed and the valve is reopened to restore the argon gas circulation. The cooperation between the detection port and the valve realizes convenient monitoring and maintenance of the filter assembly, improving the maintainability and operational reliability of the equipment.

[0010] Preferably, a transmission link three is rotatably connected to the outside of the transmission link one, a transmission link two is rotatably connected to the outside of the transmission link three, and a sliding plate one is rotatably connected to the outside of the transmission link two. By adopting the above technical solution, when the cylinder drives the push column to extend, the transmission link connected to the push column rotates at the beginning. The first transmission link drives the third transmission link to move, and the third transmission link then links with the second transmission link. Since the second transmission link is rotatably connected to the first sliding plate, under the coordinated transmission of each link, the second sliding plate on the first sliding plate slides in different directions, firmly clamping the stainless steel pipe on the support plate from multiple angles. This can effectively offset the vibration and stress generated during the welding process, ensure that the pipe maintains a precise position during welding, and significantly improve welding stability and product qualification rate.

[0011] Preferably, a sliding plate two is rotatably connected to the outside of the transmission link three, and the sliding plate two is slidably connected to the outside of the sliding plate one. A support plate is fixedly connected to the inside of the welding chamber. By adopting the above technical solution, when fixing the stainless steel pipe, the transmission link three rotates under the linkage of the transmission link one and the transmission link two. The sliding plate two connected to it rotates is driven by the link and slides along the track of the sliding plate one. Multiple sliding plates two gradually approach the pipe to be welded placed on the support plate from different directions until the pipe is tightly clamped and fixed.

[0012] Preferably, the welding mechanism includes a fixed rod, the fixed rod is fixedly connected to the outside of the welding chamber, a rotating welding gun is slidably connected to the outside of the welding chamber, a motor is fixedly connected to the inside of the welding chamber, and a rotating wheel is fixedly connected to the drive end of the motor; By adopting the above technical solution, during welding operations, the fixed rod fixed outside the welding chamber provides a support base for the rotating welding torch. The rotating welding torch can slide and adjust to a suitable welding starting position outside the welding chamber. Subsequently, the motor fixed inside the welding chamber starts, and the motor drive end drives the rotating wheel to rotate. The rotating wheel drives the stainless steel pipe to be welded to make circular motion through the transmission structure, while the welding torch performs welding operations.

[0013] Preferably, the cooling mechanism includes a heat exchanger, the heat exchanger is externally fixedly connected to the inside of the welding chamber, and the welding chamber is provided with a liquid inlet on the outside; By adopting the above technical solution, the cooling mechanism is activated immediately after the welding operation is completed. Coolant is injected through the inlet outside the welding chamber and flows into the heat exchanger fixed inside the welding chamber. The heat exchanger makes full contact with the high-temperature stainless steel pipes and surrounding areas after welding, and quickly absorbs the heat from the pipes through efficient heat exchange. The coolant, after absorbing heat, flows out of the heat exchanger for circulation cooling or replacement, continuously removing heat from the welding area until the pipe temperature drops to the target value.

[0014] In summary, this application includes at least one of the following beneficial technical effects: 1. Through the argon gas circulation system, the gas storage tank, blower and filter components work together to improve resource utilization efficiency while ensuring welding quality. Argon gas is delivered to the welding chamber by the blower to form a protective gas layer, which effectively isolates oxygen and prevents oxidation of stainless steel pipes during welding, ensuring the purity of the weld. The mixed gas is filtered to remove impurities, dust and trace oxygen before flowing back to the gas storage tank. This not only reduces argon gas loss and lowers production costs, but also avoids the cumbersome operation of frequently changing the gas storage tank, improving the continuity of welding operations. The setting of detection ports and valves facilitates real-time monitoring of the filter element status and adjustment of the return flow, further optimizing the argon gas circulation effect and achieving high efficiency, environmental protection and economy in the welding process. 2. A fixing mechanism combining sliding adjustment and linkage transmission enables precise positioning and stable clamping of stainless steel pipes of different specifications. The adjustable sliding plates one and two can accommodate various pipe diameter requirements. The linkage structure of the transmission rod ensures synchronous force application in multiple directions, preventing pipe eccentricity or loosening, laying the foundation for high-quality welding, ensuring the stability of the inert gas protective layer during welding, reducing the risk of weld oxidation, and reducing argon gas consumption, significantly improving welding efficiency and economy, and providing reliable process assurance for pipe welding. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of an integrated argon gas pressure holding and cooling device for welding stainless steel pipes, as proposed in this utility model. Figure 2 This is a schematic diagram of the fixing rod of an integrated argon gas pressure holding and cooling device for welding stainless steel pipes, as proposed in this utility model. Figure 3 This is a schematic diagram of the rotating wheel of an integrated argon gas pressure holding and cooling device for stainless steel pipe welding proposed in this utility model. Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the liquid inlet of an integrated argon gas pressure holding and cooling device for welding stainless steel pipes, as proposed in this utility model. Explanation of reference numerals in the attached drawings: 1. Welding chamber; 2. Argon pressure holding mechanism; 21. Gas storage tank; 22. Blower; 23. Filter assembly; 231. Filter barrel; 232. Detection port; 233. Valve; 3. Pneumatic sealing door; 4. Fixing mechanism; 41. Sliding bar; 42. Sliding plate one; 43. Sliding plate two; 44. Cylinder; 45. Push column; 46. Transmission link one; 47. Transmission link two; 48. Transmission link three; 5. Welding mechanism; 51. Fixing rod; 52. Rotating welding torch; 53. Motor; 54. Rotating wheel; 6. Support plate; 7. Cooling mechanism; 71. Heat exchanger; 72. Liquid inlet. Detailed Implementation

[0016] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0017] Example: An integrated argon gas pressure holding and cooling device for welding stainless steel pipes, referring to... Figures 1 to 3The system includes a welding chamber 1, which provides a closed environment to isolate external air interference and ensure a stable argon protective atmosphere during welding. It also provides an installation foundation for the internal mechanisms. Inside the welding chamber 1 is a welding mechanism 5, which is responsible for performing welding operations on stainless steel pipes. High-quality welding is achieved through precise control. Outside the welding chamber 1 is an argon pressure holding mechanism 2, which maintains a stable argon pressure in the welding chamber 1 to prevent air from entering and affecting welding quality, ensuring that the weld is oxidation-resistant and free of porosity. Inside the welding chamber 1 is a cooling mechanism 7, which rapidly cools the welded pipes and equipment components to prevent material deformation and performance degradation caused by high temperatures. Inside the welding chamber 1 is a fixing mechanism 4, which fixes the stainless steel pipes to be welded. Outside the welding chamber 1 is a pneumatic sealing door 3, which enables the welding chamber 1 to be opened and closed quickly. The pneumatic drive improves operating efficiency, and the sealing structure ensures that the argon pressure inside the chamber does not leak. Argon pressure holding mechanism 2 includes a gas storage tank 21, which is used to store the argon gas required for welding and serves as the source of argon gas supply to ensure a continuous and stable supply of argon gas during the welding process. The gas storage tank 21 is fixedly connected to the outside of the welding chamber 1. A blower 22 is fixedly connected to the outside of the gas storage tank 21. The blower 22 is used to blow the argon gas from the gas storage tank 21 into the welding chamber 1 to accelerate the argon gas circulation and maintain a uniform and stable pressure inside the chamber. The blower 22 is fixedly connected to the top of the welding chamber 1. A filter assembly 23 is provided on the bottom side of the outside of the welding chamber 1. The filter assembly 23 is used to purify the argon gas used in the welding chamber 1, remove impurities such as metal dust and welding slag particles generated during the welding process, and prevent impurities from affecting the purity of the argon gas and the welding quality. The filter assembly 23 is fixedly connected to the outside of the gas storage tank 21. The filter assembly 23 includes a filter barrel 231. The internal space of the filter barrel 231 is used to install a replaceable filter element, which intercepts impurities in the argon gas. The filter barrel 231 is externally slidably connected to the inside of the welding chamber 1. The replaceable filter element is slidably connected inside the filter barrel 231. The replaceable filter element uses high-precision filter material to deeply filter the tiny particles in the argon gas, ensuring the cleanliness of the argon gas. The filter barrel 231 is externally threadedly connected to a detection port 232. The detection port 232 is used to connect to detection equipment such as pressure sensors and gas analyzers to monitor the pressure and purity parameters of the filtered argon gas in real time. The detection port 232 is externally slidably connected to the outside of the welding chamber 1. The detection port 232 is externally fixedly connected to the outside of the valve 233. The valve 233 is externally fixedly connected to the outside of the gas storage tank 21. Specifically, the integrated stainless steel pipe welding equipment uses the stainless steel welding chamber 1 as its core carrier to construct a complete welding work system. During operation, the operator first places the stainless steel pipe to be welded into the welding chamber 1 through the pneumatic sealing door 3, and uses the fixing mechanism 4 to fix the pipe. Then, the pneumatic sealing door 3 is closed to form a sealed space, the argon gas pressure holding mechanism 2 is activated, and the argon gas stored in the gas storage tank 21 is transported to the welding chamber 1 through the pipeline under the action of the blower 22, forming a stable protective gas layer in the area to be welded. The welding mechanism 5 performs the welding operation, and the mixed gas generated during the process passes through the bottom side of the welding chamber 1. The filter assembly 23 enters the filter barrel 231, where it undergoes deep filtration of impurities such as metal dust and welding slag by a replaceable filter element. The purified argon gas then flows back to the gas storage tank 21 through valve 233 for recycling. Simultaneously, the detection port 232 is connected to monitoring equipment to provide real-time feedback on argon gas pressure and purity data, ensuring the stable operation of the pressure holding system. After welding is completed, the cooling mechanism 7 is activated to rapidly cool the pipeline and prevent high-temperature deformation. This achieves a fully integrated operation from pipeline fixing, argon gas pressure holding, precise welding to efficient cooling. Its key components are made of corrosion-resistant and high-strength materials to ensure long-term stable operation of the equipment and reliable welding quality.

[0018] Reference Figure 2 , Figure 4 and Figure 5 The fixing mechanism 4 includes a sliding bar 41, which provides a sliding track for sliding plate 1 42 and sliding plate 2 43, ensuring precise adjustment and stability of the pipe fixing position. The sliding bar 41 is externally fixedly connected to the inside of the welding chamber 1. A cylinder 44 is externally fixedly connected to the sliding bar 41. The cylinder 44 is used to drive the push column 45 to move, thereby clamping and releasing the pipe. The drive end of the cylinder 44 is fixedly connected to the push column 45, which is used to transmit the force of the cylinder 44 to the transmission link 1 46, driving the subsequent transmission structure to move. The external part of the push column 45 is rotatably connected to the transmission link 1 46, which is used to convert linear motion into the compound motion of the linkage mechanism, realizing force amplification and direction conversion. The external rotatable connection of connecting rod 1 46 is a transmission connecting rod 3 48, and the external rotatable connection of transmission connecting rod 3 48 is a transmission connecting rod 2 47. Through the linkage of the triangular connecting rod structure, transmission connecting rod 2 47 ensures that sliding plate 1 42 and sliding plate 2 43 move synchronously and stably towards the pipeline. The external rotatable connection of transmission connecting rod 2 47 is a sliding plate 1 42, and the external rotatable connection of transmission connecting rod 3 48 is a sliding plate 2 43. Sliding plate 2 43 is used to adaptively adjust according to the pipe diameter to ensure the fixing effect of pipes of different specifications. The external sliding connection of sliding plate 2 43 is external to sliding plate 1 42. The internal fixed connection of welding chamber 1 is a support plate 6. The support plate 6 provides auxiliary support for the fixing mechanism 4, shares the pressure generated when the sliding plate clamps the pipe, and enhances the overall structural strength. The welding mechanism 5 includes a fixed rod 51, which provides a mounting point for the rotating welding torch 52 to ensure that the welding torch remains stable during the welding process and prevents the welding quality from deteriorating due to shaking. The fixed rod 51 is externally fixedly connected to the outside of the welding chamber 1. The rotating welding torch 52 is slidably connected to the outside of the welding chamber 1. The rotating welding torch 52 can rotate along the fixed rod 51 to adapt to welding requirements at different angles and positions, and realize continuous welding of the pipe annular weld. The inside of the welding chamber 1 is fixedly connected to a motor 53, which is the power source of the rotating welding torch 52. The drive end of the motor 53 is fixedly connected to a rotating wheel 54, which transmits the power of the motor 53 to the stainless steel pipe. The cooling mechanism 7 includes a heat exchanger 71, which removes the high-temperature heat generated by welding through coolant circulation, thereby reducing the temperature of pipes and equipment. The heat exchanger 71 is externally fixedly connected to the inside of the welding chamber 1. The welding chamber 1 is provided with a liquid inlet 72 on the outside, which is used to connect to the coolant supply pipeline to replenish the coolant and maintain the continuous operation of the cooling system. Specifically, in the stainless steel pipe welding operation, the various structures of this integrated equipment work closely together to ensure a highly efficient and stable welding process. At the beginning of the operation, the pipe is placed on the support plate 6 inside the welding chamber 1 and fixed by the fixing mechanism 4. The cylinder 44 drives the push column 45 to extend, which drives the transmission connecting rod 1 46 to rotate. Through the linkage of the transmission connecting rod 2 47 and the transmission connecting rod 3 48, the sliding plate 2 43 adaptively adjusts along the track of the sliding bar 41 and the sliding plate 1 42, firmly clamping the pipe from multiple directions. The support plate 6 synchronously shares the pressure to ensure the stability and reliability of the fixing structure. After the fixing is completed, the welding mechanism 5 is started. The fixing rod 51 provides stable support for the rotating welding torch 52. The motor 53 drives the rotating wheel 54, which drives the stainless steel pipe to rotate. The rotating welding torch 52 slides and rotates along the fixing rod 51 to realize the continuous welding of the pipe's circumferential weld. After the welding is completed, the cooling mechanism 7 immediately intervenes. The coolant flows into the welding chamber 1 through the inlet 72 and fully exchanges heat with the high-temperature pipe in the heat exchanger 71, quickly removing the welding residual heat and achieving efficient cooling.

[0019] The implementation principle of this application embodiment is as follows: The operator places the stainless steel pipe to be welded in the welding chamber 1. The sliding plate 42 slides outside the sliding bar 41 to adjust its position. The cylinder 44 drives the push column 45 to extend. The push column 45 drives the transmission link 46 to rotate, thereby causing the transmission link 47 and the transmission link 48 to move together. The transmission link 48 pushes the sliding plate 43 to slide on the sliding plate 42. Multiple sliding plates 43 clamp the pipe firmly on the support plate 6 from different directions, ensuring that the pipe position is fixed during the welding process and avoiding the impact of shaking on the welding quality. After the pipe is fixed, the pneumatic sealing door 3 and the cylinder 44 of the pneumatic sealing door 3 close the door plate, tightly fitting the welding chamber 1 to form a closed welding space, preventing argon gas leakage during the welding process and ensuring the argon gas pressure holding effect. Argon gas in storage tank 21 is transported to welding chamber 1 through pipeline by blower 22. After entering welding chamber 1, the argon gas covers the surface of the pipe to be welded, forming a protective gas layer. As argon gas is continuously injected, the original air in welding chamber 1 mixes with the argon gas and is discharged from the filter assembly 23 on the bottom side of the outside of welding chamber 1. The mixed gas enters filter barrel 231, and the condition of the filter element can be detected through detection port 232 for easy replacement. Valve 233 adjusts the backflow. The filter element filters the gas, removing impurities, dust, and trace amounts of oxygen that may have been mixed in. The purified argon gas returns to storage tank 21 through pipeline, realizing the recycling of argon gas. The rotating wheel 54 is driven to rotate by the motor 53, which in turn drives the stainless steel pipe to rotate. The rotating welding torch 52 is adjusted to slide outside the fixed rod 51 and adjusted to a suitable welding position. The rotating welding torch 52 is then started to perform welding operations on the fixed stainless steel pipe. After the welding operation is completed, the coolant is drawn into the heat exchanger 71 through the miniature air pump inside the inlet 72. The heat exchanger 71 exchanges heat with the high-temperature environment of the welding chamber 1, absorbing the heat from the pipe and the surrounding area, and reducing the temperature after welding.

[0020] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. An integrated argon gas pressure holding and cooling device for welding stainless steel pipes, comprising a welding chamber (1), characterized in that, The welding chamber (1) is equipped with a welding mechanism (5) inside, an argon gas pressure holding mechanism (2) is equipped on the outside of the welding chamber (1), a cooling mechanism (7) is equipped inside the welding chamber (1), a fixing mechanism (4) is equipped inside the welding chamber (1), and a pneumatic sealing door (3) is fixedly connected to the outside of the welding chamber (1). The argon gas pressure holding mechanism (2) includes a gas storage tank (21), which is fixedly connected to the outside of the welding chamber (1). A blower (22) is fixedly connected to the outside of the gas storage tank (21), which is fixedly connected to the top of the welding chamber (1). A filter assembly (23) is provided on the bottom side of the outside of the welding chamber (1), which is fixedly connected to the outside of the gas storage tank (21).

2. The integrated argon pressure holding and cooling equipment for stainless steel pipe welding according to claim 1, characterized in that, The fixing mechanism (4) includes a sliding bar (41), the outside of which is fixedly connected to the inside of the welding chamber (1), the outside of which is slidably connected to a cylinder (44), the driving end of the cylinder (44) is fixedly connected to a push column (45), and the outside of the push column (45) is rotatably connected to a transmission connecting rod (46).

3. The integrated argon pressure holding and cooling equipment for stainless steel pipe welding according to claim 1, characterized in that, The filter assembly (23) includes a filter barrel (231), the outside of which is slidably connected to the inside of the welding chamber (1), a replaceable filter element is slidably connected inside the filter barrel (231), and a detection port (232) is threadedly connected to the outside of the filter barrel (231).

4. The integrated argon pressure holding and cooling equipment for stainless steel pipe welding according to claim 3, characterized in that, The detection port (232) is slidably connected to the outside of the welding chamber (1), and the outside of the detection port (232) is fixedly connected to the outside of the valve (233), and the outside of the valve (233) is fixedly connected to the outside of the gas storage tank (21).

5. The integrated argon pressure holding and cooling equipment for stainless steel pipe welding according to claim 2, characterized in that, The transmission link 1 (46) is externally rotatably connected to the transmission link 3 (48), the transmission link 3 (48) is externally rotatably connected to the transmission link 2 (47), and the transmission link 2 (47) is externally rotatably connected to the sliding plate 1 (42).

6. The integrated argon pressure holding and cooling equipment for stainless steel pipe welding according to claim 5, characterized in that, The transmission link three (48) is rotatably connected to the outside of the sliding plate two (43), the sliding plate two (43) is slidably connected to the outside of the sliding plate one (42), and the welding chamber (1) is fixedly connected to the inside of the support plate (6).

7. The integrated argon pressure holding and cooling equipment for stainless steel pipe welding according to claim 1, characterized in that, The welding mechanism (5) includes a fixed rod (51), which is fixedly connected to the outside of the welding chamber (1). A rotating welding gun (52) is slidably connected to the outside of the welding chamber (1). A motor (53) is fixedly connected to the inside of the welding chamber (1). A rotating wheel (54) is fixedly connected to the drive end of the motor (53).

8. The integrated argon pressure holding and cooling equipment for stainless steel pipe welding according to claim 1, characterized in that, The cooling mechanism (7) includes a heat exchanger (71), which is fixedly connected to the outside of the welding chamber (1), and the outside of the welding chamber (1) is provided with a liquid inlet (72).

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