Anti-deformation and argon filling device for welding of large-diameter thin-wall clean stainless steel pipeline

Abstract

The invention provides a stainless steel pipeline welding anti-deformation and argon filling device which is used for welding of large-diameter thin-wall stainless steel clean pipelines, belongs to the technical field of pipeline welding equipment, and comprises a first main body frame, a second main body frame, a supporting assembly, an argon filling assembly and an argon filling assembly, supporting assemblies are arranged on the side walls of the first main body frame and the second main body frame; the argon filling assembly is arranged in an inner cavity of the supporting assembly; and the pull rope rod is fixedly installed on the right side wall of the first main body frame, and the pull rope rod is used for pulling the first main body frame. Through the arrangement of the supporting assembly, the inner wall of the pipeline can be supported when the pipeline is welded, pipeline deformation is adjusted [angling 1], misalignment generated when the pipeline is assembled is reduced, and meanwhile welding deformation can be controlled.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline welding equipment, and in particular to a stainless steel pipeline welding anti-deformation and argon filling device for welding large-diameter thin-walled stainless steel clean pipelines. Background Art

[0002] Large-diameter, thin-walled, clean stainless steel pipes are very easy to deform during transportation and construction due to their thin wall thickness and poor rigidity. They cause large misalignment during assembly of the pipe mouth, resulting in welding defects such as incomplete penetration and incomplete fusion. Thin-walled stainless steel pipes also deform greatly during welding, and the weld position will shrink and deform after welding. When stainless steel pipes are welded, argon needs to be filled in the pipe to protect the weld, and it is difficult to fill argon in large-diameter stainless steel pipes. In the prior art, in order to ensure the concentration of argon in the welding area, cardboard and tape are currently used to seal the pipes on both sides of the weld to form a sealed chamber in the pipe for argon protection. However, for clean pipes, this method will produce dust pollution and is not suitable for clean pipe construction. Secondly, the quality of argon filling cannot be guaranteed, and the welder's experience is needed to judge when welding can be carried out. The quality of argon filling is unstable, which affects the welding quality and causes the weld to be oxidized. In addition, the sealing material is not easy to remove after welding. Therefore, how to invent a large-diameter, thin-walled, stainless steel clean pipe welding anti-deformation and argon filling device to improve these problems has become a problem that needs to be solved by technicians in this field. Summary of the invention

[0003] In order to make up for the above shortcomings, the present invention provides a large-diameter thin-wall stainless steel clean pipeline welding anti-deformation and argon filling device, aiming to improve the problems raised in the above background technology.

[0004] The present invention is achieved in that: The present invention provides an argon filling device for pipeline welding, comprising a first main frame and a second main frame, wherein a connecting rope is fixedly installed between the first main frame and the second main frame, and further comprising: Support components: The side walls of the first main frame and the second main frame are both provided with support components, and the support components are used to support the inside of the welding pipe; when the pipes are assembled, the support components can be adjusted to expand and contract by means of screws, thereby adjusting the roundness of the pipes and the misalignment when the pipes are assembled. When welding, the internal support of the pipes can effectively prevent shrinkage and deformation of the welding.

[0005] An argon filling component, which is arranged in the inner cavity of the support component and is used to protect the welding pool during pipeline welding to prevent the weld metal from being oxidized; A pull rope rod is fixedly mounted on the right side wall of the first main frame, and the pull rope is used to pull the first main frame. After welding is completed, the support state of the device can be released by pulling the pull rope from one end of the pipeline, and the device can be smoothly taken out from the installed pipeline.

[0006] Preferably, the support assembly includes a center column fixedly mounted on the side wall of the first main frame, and an adjustment sleeve rotatably mounted on the side wall of the center column, an adjustment rod is threadedly mounted on the inner cavity of the adjustment sleeve, and a support seat is rotatably mounted on the end of the adjustment rod.

[0007] By adopting the above technical solution, multiple groups of support seats can be fitted on the inner wall of the pipeline, so that the entire equipment can correct the deformation of the pipeline before welding, facilitate the assembly of the pipeline group, and support the pipeline during welding to prevent shrinkage deformation caused by welding.

[0008] Preferably, the support components are arranged in multiple groups in an annular manner and equidistantly on the first main frame and the second main frame, the end face of the support seat is arranged in an arc shape, a torsion spring is wound on the side wall of the center column, and the two ends of the torsion spring are respectively fixed on the side wall of the adjustment sleeve and the inner wall of the first main frame.

[0009] By adopting the above technical solution, the arc-shaped support base effectively improves the supporting effect of the entire equipment.

[0010] Preferably, the argon filling assembly includes a piston pad fixedly mounted on the bottom of the adjusting rod, and a return spring fixedly mounted on the bottom surface of the inner cavity of the adjusting sleeve, and a piston magnetic plate is fixedly mounted on the other end of the return spring.

[0011] Preferably, the upper part of the inner cavity of the adjusting sleeve is set as an internal thread groove, and the lower part of the inner cavity is set as a smooth curved surface. A magnetic arc block is set on one side of the side wall of the central column. The magnetic arc block has the same magnetic pole as the opposite side of the piston magnetic plate, and the piston magnetic plate slides in the inner cavity of the adjusting sleeve.

[0012] Preferably, an air outlet pipe is fixedly installed in the inner cavity of the support seat, the adjusting rod and the piston pad, and the inner cavity of the air outlet pipe is provided with a one-way air valve whose outlet is to the outside world; an air inlet hole is provided at the lower part of the side wall of the adjusting sleeve, and the inner cavity of the air inlet hole is provided with a one-way air valve whose outlet is to the inner cavity of the adjusting sleeve.

[0013] By adopting the above technical solution, it can be preferred that silicone cloth is fixedly installed between each pair of supporting components on the first main frame, silicone cloth is fixedly installed between all supporting components on the second main frame, and an argon filling pipe and an exhaust pipe are fixedly installed on the upper and lower sides of the silicone cloth side walls on the first main frame.

[0014] By adopting the above technical solution, an argon gas closed chamber is formed in the pipes on both sides of the weld. During welding, argon gas is filled into the gas filling pipe to discharge the air in the chamber. The closed chamber has a small volume, which can reduce the time of argon filling and improve the quality of argon filling.

[0015] Preferably, an oxygen concentration detector is fixedly mounted on the left end surface of the first main frame, and a control and analysis display is fixedly mounted on the right end surface of the first main frame, and the oxygen concentration detector is used to detect the oxygen concentration of the exhaust gas inside the pipeline.

[0016] By adopting the above technical solution, the air content in the welding area of ​​the pipelines on both sides can be monitored in real time. When the oxygen concentration of the exhaust gas is lower than 1%, welding is allowed. In the past, the welder's experience was used to determine whether the back argon filling met the requirements. The welding conditions can be quantitatively stipulated, which is intuitive and clear. It is no longer necessary to judge whether welding can be done based on the welder's experience, which is convenient for controlling the welding quality.

[0017] The beneficial effects of the present invention are: On the basis of the existing pipeline welding argon filling equipment, additional support components and argon filling components are added. With the action of the silicone cloth set on the first main frame and the second main frame, the sealing between the pipelines on both sides can be ensured. At this time, sufficient argon is filled into the welding area of ​​the pipelines on both sides, which provides a good working environment for argon arc welding. When the oxygen concentration in the area where the pipelines on both sides are welded is monitored by the oxygen concentration detector and the control analysis display and the oxygen concentration is lower than 1%, the user can realize the argon arc welding of the pipeline. After the argon arc welding work is completed, the user can pull the first main frame by pulling the rope rod to release the support state of the support devices on both sides of the welding, and smoothly pull out from the pipeline section after the welding is completed. Effectively improve the efficiency of workers' pipeline welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of a pipeline welding argon filling device provided by an embodiment of the present invention; Figure 2 It is a rear view overall structural schematic diagram of a pipeline welding argon filling device provided in an embodiment of the present invention; Figure 3 It is a schematic diagram of a first main frame connection structure of a pipeline welding argon filling equipment provided in an embodiment of the present invention; Figure 4 It is a schematic diagram of the connection structure of an adjustment sleeve of a pipeline welding argon filling device provided in an embodiment of the present invention; Figure 5 It is a schematic diagram of a first state of a cross-section of an adjustment sleeve of a pipeline welding argon filling device provided by an embodiment of the present invention; Figure 6 It is a schematic diagram of a second state of a cross-section of an adjustment sleeve of a pipeline welding argon filling device provided by an embodiment of the present invention; Figure 7 It is a schematic diagram of the supporting state structure of a pipeline welding argon filling device provided in an embodiment of the present invention; Figure 8 It is a schematic diagram of the disassembled structure of a pipeline welding argon filling device provided in an embodiment of the present invention.

[0020] In the figure: 1. first main frame; 2. second main frame; 3. connecting rope; 4. supporting assembly; 41. center column; 411. magnetic arc block; 42. adjusting sleeve; 421. air inlet; 43. adjusting rod; 44. supporting seat; 45. torsion spring; 5. argon filling assembly; 51. piston pad; 52. return spring; 53. piston magnetic plate; 54. outlet pipe; 6. pull rope rod; 7. silicone cloth; 71. argon filling tube; 72. exhaust pipe; 8. oxygen concentration detector; 9. control and analysis display. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0022] Reference Figure 1-8 , a pipeline welding argon filling equipment, comprising a first main frame 1 and a second main frame 2, a connecting rope 3 is fixedly installed between the first main frame 1 and the second main frame 2, and further comprising: Support assembly 4, the side walls of the first main frame 1 and the second main frame 2 are both provided with support assembly 4, and the support assembly 4 is used to provide support in the welding pipeline; An argon filling component 5 is arranged in the inner cavity of the supporting component 4 and is used for blowing air to dissipate heat at the welding part after the pipeline welding is completed; The pull rope rod 6 is fixedly mounted on the right side wall of the first main frame 1 , and the pull rope 6 is used to pull the first main frame 1 .

[0023] Furthermore, the support assembly 4 includes a central column 41 fixedly mounted on the side wall of the first main frame 1, and an adjusting sleeve 42 rotatably mounted on the side wall of the central column 41, an adjusting rod 43 is threadedly mounted on the inner cavity of the adjusting sleeve 42, and a support seat 44 is rotatably mounted on the end of the adjusting rod 43. The support assembly 4 is provided with multiple groups of equidistant annular supports on the first main frame 1 and the second main frame 2, and the end face of the support seat 44 is arranged in an arc shape. A torsion spring 45 is wound around the side wall of the central column 41, and the two ends of the torsion spring 45 are respectively fixed on the side wall of the adjusting sleeve 42 and the inner wall of the first main frame 1 It should be noted that: the user rotates the adjustment sleeve 42 to a position parallel to the second main frame 2, and then rotates the adjustment rod 43 to move it toward the outside of the inner cavity of the adjustment sleeve 42. At this time, the length of the entire adjustment sleeve 42 and the adjustment rod 43 will be extended. When the length of the adjustment rod 43 and the adjustment sleeve 42 is equal to the radius of the welding pipe, the user respectively sends the first main frame 1 and the second main frame 2 into the welding pipes on both sides. At this time, the entire equipment can support and adjust the two welding pipes to ensure that the two groups of pipes have the same shape, reduce the amount of misalignment when the welds are assembled, effectively support the pipes during welding, prevent welding shrinkage and deformation, and improve the quality of pipe welding by users.

[0024] Furthermore, silicone cloth 7 is fixedly installed between each pair of supporting components 4 on the first main frame 1, silicone cloth 7 is fixedly installed between all supporting components 4 on the second main frame 2, an argon filling tube 71 and an exhaust pipe 72 are fixedly installed on the upper and lower sides of the side walls of the silicone cloth 7 on the first main frame 1, an oxygen concentration detector 8 is installed at the outlet of the exhaust pipe, and a control and analysis display 9 is fixedly installed on the right end surface of the first main frame 1, and the oxygen concentration detector 8 is electrically connected to the control and analysis display 9.

[0025] It should be noted that after the first main frame 1 and the second main frame 2 are respectively sent into the welding pipes on both sides, the silicone cloth on the first main frame 1 and the second main frame 2 will be completely opened to ensure the sealing between the pipes on both sides. At this time, the user can use the external argon gas bottle with the argon filling tube 71 to fill a sufficient amount of argon gas into the welding area of ​​the pipes on both sides, which improves a good working environment for argon arc welding. Through the setting of the oxygen concentration detector 8 and the control analysis display 9, etc., the air in the welding area of ​​the pipes on both sides can be monitored. When the oxygen concentration detector 8 detects that the oxygen concentration in the air is lower than 1%, the argon concentration in the air between the silicone cloths on both sides will meet the set value. At this time, the user can realize the construction of argon arc welding of the pipeline. Through the sealing of both sides, a closed argon gas chamber is formed to protect the weld from oxidation, while reducing the argon filling time, reducing the consumption of argon gas, reducing production losses, and improving work efficiency. .

[0026] The argon filling component 5 includes a piston pad 51 fixedly mounted on the bottom of the adjusting rod 43, and a return spring 52 fixedly mounted on the bottom surface of the inner cavity of the adjusting sleeve 42, the other end of the return spring 52 is fixedly mounted with a piston magnetic plate 53, the upper part of the inner cavity of the adjusting sleeve 42 is set as an internal thread groove, and the lower part of the inner cavity is set as a smooth curved surface, a magnetic arc block 411 is set on one side of the side wall of the central column 41, and the magnetic arc block 411 has the same magnetic pole as the opposite side of the piston magnetic plate 53, and the piston magnetic plate 53 slides in the inner cavity of the adjusting sleeve 42, and an air outlet pipe 54 is fixedly mounted on the inner cavity of the support seat 44, the adjusting rod 43 and the piston pad 51, and the inner cavity of the air outlet pipe 54 is provided with a one-way air valve with an outlet to the outside, and an air inlet hole 421 is set at the lower part of the side wall of the adjusting sleeve 42, and the inner cavity of the air inlet hole 421 is provided with a one-way air valve with an outlet to the inner cavity of the adjusting sleeve 42.

[0027] It should be noted that the working principle of the pipeline welding argon filling equipment is as follows: when using the entire equipment, the user rotates the adjustment sleeve 42 to a position parallel to the second main frame 2, and then rotates the adjustment rod 43 to move it toward the outside of the inner cavity of the adjustment sleeve 42. At this time, the length of the entire adjustment sleeve 42 and the adjustment rod 43 will be extended. When the length of the adjustment rod 43 and the adjustment sleeve 42 is equal to the radius of the welding pipe, the user respectively sends the first main frame 1 and the second main frame 2 into the welding pipes on both sides. At this time, the entire equipment can support the two welding pipes to ensure that the two groups of pipes have the same shape and improve the quality of the user's welding of the pipes. According to the above, the present application can adjust the support radius of the entire device under the action of the support assembly, and can be provided for use with pipes of different inner diameters, effectively improving the applicability of the entire device; After the first main frame 1 and the second main frame 2 are respectively sent into the welding pipes on both sides, the silicone cloth on the first main frame 1 and the second main frame 2 will be completely opened to ensure the sealing between the pipes on both sides. At this time, the user can use an external argon bottle in conjunction with the argon filling tube 71 to fill a sufficient amount of argon into the welding area of ​​the pipes on both sides, thereby improving a good working environment for argon arc welding. Through the setting of the oxygen concentration detector 8 and the control analysis display 9, etc., the air in the welding area of ​​the pipes on both sides can be monitored. When the oxygen concentration detector 8 detects that the oxygen concentration in the exhausted air is lower than 1%, the argon concentration in the air between the silicone cloths on both sides will meet the set value, and the user can now perform argon arc welding on the pipeline.

[0028] The design of the pull rope rod 6 is crucial, and it is fixedly installed on the right side wall of the first main frame 1. After welding is completed, the user only needs to pull the pull rope rod 6 to pull the first main frame 1. Since the support seat 44 is firmly attached to the inner wall of the pipe during the welding process and provides stable support, the adjustment sleeve 42 will rotate on the side wall of the center column 41 during the pulling process. When the adjustment sleeve 42 rotates to oppose the magnetic arc block 411 opposite to the piston magnetic plate 53, due to the magnetic effect, the piston magnetic plate 53 will be pushed to the left side of the inner cavity of the adjustment sleeve 42, and the reset spring 52 will be stretched accordingly, thereby realizing the contraction of the support assembly 4 and releasing the support state of the device. This process not only ensures that the device can be smoothly pulled out of the pipeline, but also improves the efficiency and safety of the construction. In addition, the user pulls the first main frame 1 by pulling the pull rope rod 6. Since the support seat 44 is firmly attached to the inner wall of the pipe at this time, the inner wall of the pipe can give a certain pressure to the support component 4. When the user pulls the first main frame 1, the adjusting sleeve 42 will rotate on the side wall of the center column 41. When the adjusting sleeve 42 rotates to the point where the piston magnetic plate 53 is opposite to the magnetic arc block 411 on the center column 41, the repulsive force of the magnetic arc block 411 will squeeze the piston magnetic plate 53. At this time, the reset spring 52 is stretched, and the piston magnetic plate 53 moves to the left side of the inner cavity of the adjusting sleeve 42. As the volume of the inner cavity on the left side of the adjusting sleeve 42 continues to decrease, the internal air pressure continues to increase, and finally the air in the adjusting sleeve 42 will be able to be discharged through the outlet pipe 54, effectively improving the efficiency of workers in welding the pipes on both sides.

[0029] In the pipeline welding argon filling equipment of the present invention, the diameters of the exhaust pipe 72 and the air inlet pipe 71 are specially designed to achieve a slightly positive pressure environment in the welding chamber to prevent the infiltration of external air, thereby ensuring the gas quality in the welding area. The specific operation method is as follows: The user first connects the argon filling tube 71 through an external argon gas bottle to fill argon into the welding chamber. At this time, the inner cavity of the air inlet 421 is provided with a one-way valve to ensure that argon can only flow into the inner cavity of the regulating sleeve 42 in one direction. As the argon gas is continuously filled, the pressure in the chamber gradually rises, but because the diameter of the exhaust pipe 72 is designed to be small, it helps to maintain the micro-positive pressure state in the chamber and avoid excessive pressure. The micro-positive pressure state can effectively gradually discharge the air in the chamber. The gas discharged through the exhaust pipe 72 will be monitored in real time by the oxygen concentration detector 8 to ensure that the oxygen concentration in the chamber is less than 1%, meeting the gas environment requirements required for welding. The user needs to pay attention during the operation. Although it is necessary to form a micro-positive pressure to prevent air from entering, the pressure in the chamber should not be too large to avoid adverse effects on the welding process. Therefore, the design of this equipment avoids the provision of a one-way valve on the outlet pipe 54, so that excess gas can be naturally discharged without forming excessive pressure, maintaining the balance of pressure in the chamber. Through the above operation, the user can effectively control the gas environment in the welding chamber to ensure the quality and efficiency of the welding process.

[0030] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pipeline welding argon filling device, comprising a first main frame (1) and a second main frame (2), wherein a connecting rope (3) is fixedly installed between the first main frame (1) and the second main frame (2), characterized in that: Also includes: A support assembly (4), wherein the side walls of the first main frame (1) and the second main frame (2) are both provided with a support assembly (4), and the support assembly (4) is used to provide support inside the welding pipeline; An argon filling component (5), the argon filling component (5) being arranged in the inner cavity of the support component (4), and the argon filling component (5) being used to fill argon into the interior of the pipeline during pipeline welding to protect the molten pool from oxidation; A pull rope rod (6), wherein the pull rope rod (6) is fixedly mounted on the right side wall of the first main body frame (1), and the pull rope (6) is used to pull the first main body frame (1).

2. The pipeline welding argon filling equipment according to claim 1, characterized in that: The support assembly (4) comprises a central column (41) fixedly mounted on the side wall of the first main frame (1), and an adjustment sleeve (42) rotatably mounted on the side wall of the central column (41), an adjustment rod (43) being threadedly mounted on the inner cavity of the adjustment sleeve (42), and a support seat (44) being rotatably mounted on the end of the adjustment rod (43).

3. The pipeline welding argon filling equipment according to claim 2, characterized in that: The support components (4) are arranged in a plurality of groups in an annular manner and at equal intervals on the first main frame (1) and the second main frame (2); the end surface of the support seat (44) is arranged in an arc shape; a torsion spring (45) is wound around the side wall of the central column (41); and the two ends of the torsion spring (45) are respectively fixed to the side wall of the adjustment sleeve (42) and the inner wall of the first main frame (1).

4. The pipeline welding argon filling equipment according to claim 2, characterized in that: The argon filling assembly (5) comprises a piston pad (51) fixedly mounted on the bottom of the adjusting rod (43), and a return spring (52) fixedly mounted on the bottom surface of the inner cavity of the adjusting sleeve (42), and a piston magnetic plate (53) is fixedly mounted on the other end of the return spring (52).

5. The pipeline welding argon filling equipment according to claim 4, characterized in that: The upper portion of the inner cavity of the adjustment sleeve (42) is provided with an internal thread groove, and the lower portion of the inner cavity is provided with a smooth curved surface. A magnetic arc block (411) is provided on one side of the side wall of the central column (41). The magnetic arc block (411) has the same magnetic pole as the opposite side of the piston magnetic plate (53). The piston magnetic plate (53) slides in the inner cavity of the adjustment sleeve (42).

6. The pipeline welding argon filling equipment according to claim 4, characterized in that: An air outlet pipe (54) is fixedly mounted in the inner cavity of the support seat (44), the adjusting rod (43) and the piston pad (51); the inner cavity of the air outlet pipe (54) is provided with a one-way air valve with an outlet to the outside; an air inlet hole (421) is provided at the lower part of the side wall of the adjusting sleeve (42); the inner cavity of the air inlet hole (421) is provided with a one-way air valve with an outlet to the inner cavity of the adjusting sleeve (42).

7. The pipeline welding argon filling equipment according to claim 1, characterized in that: Silicone cloth (7) is fixedly mounted between each pair of the support components (4) on the first main frame (1), silicone cloth (7) is fixedly mounted between all the support components (4) on the second main frame (2), and an argon filling tube (71) and an exhaust tube (72) are fixedly mounted on the upper and lower sides of the side wall of the silicone cloth (7) on the first main frame (1), respectively, and the caliber of the argon tube is larger than the caliber of the exhaust tube.

8. The pipeline welding argon filling equipment according to claim 1, characterized in that: An oxygen concentration detector (8) is fixedly mounted on the left end surface of the first main frame (1), and a control analysis display (9) is fixedly mounted on the right end surface of the first main frame (1), wherein the oxygen concentration detector (8) is electrically connected to the control analysis display (9).

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