Auxiliary device for pipeline argon arc welding

Abstract

The utility model provides a pipeline argon arc welding auxiliary device which comprises a connecting frame, an argon arc welding device and an argon arc welding device. The air inflation blocking mechanism is installed on the connecting frame, the air inflation blocking mechanism comprises an air pump, an air delivery pipe assembly and two air inflation assemblies, each air inflation assembly comprises a compressed air bag, the two compressed air bags are located on the two opposite sides of the air pump respectively, and an air outlet of the air pump is connected with the two compressed air bags through the air delivery pipe assembly; and one end of the argon conveying pipe is connected with the argon outlet, and the argon outlet is located between the two compressed air bags. According to the pipeline argon arc welding auxiliary device, the pipeline is blocked through cooperation of the air pump and the compressed air bag, sponge of different sizes does not need to be used for blocking, the situation that the sponge is cut by a welding point and remains in the pipeline when the sponge is pulled away is avoided, and the situation that follow-up use of the pipeline is affected is avoided.

Description

Technical Field

[0001] This application relates to the field of pipeline welding technology, and in particular to an auxiliary device for pipeline argon arc welding. Background Technology

[0002] Argon arc welding is an electric welding technique that uses argon as a shielding gas. In pipeline welding, argon purging is mainly used for TIG welding (tungsten inert gas welding). During welding, argon is used as a shielding gas to fill the weld seam, which helps to reduce the presence of harmful gases such as oxygen and nitrogen in the pipeline, thereby protecting and purifying the weld seam.

[0003] The following method is generally used to fill pipelines with argon gas: First, two sponges are used to seal the inside of the two pipelines to prevent argon gas from escaping. Then, an argon-filling tube is used to fill the weld seam with argon gas through the sponges. After the argon filling operation is completed, the sponges are removed from the pipeline using a steel wire.

[0004] However, in the process of realizing this invention, the inventors discovered the following problems with the prior art:

[0005] 1. Because different pipes have different apertures, a sponge of the corresponding size must be used to seal them before each welding; otherwise, the pipes cannot be sealed.

[0006] 2. After welding, the sponge needs to be removed from the pipe using a steel wire. Because the weld seam will produce uneven weld points, the sponge will be torn by the weld points when it is removed, and some sponge debris may even remain in the pipe, affecting the subsequent use of the pipe. Summary of the Invention

[0007] This application provides an auxiliary device for pipeline argon arc welding to solve the problems existing in related technologies. The technical solution is as follows:

[0008] This application provides an auxiliary device for pipeline argon arc welding, including:

[0009] Connector;

[0010] An inflatable barrier mechanism is mounted on the connecting frame. The inflatable barrier mechanism includes an air pump, an air supply pipe assembly, and two inflation components. Each inflation component includes a compressed air bladder. The two compressed air bladders are located on opposite sides of the air pump. The air outlet of the air pump is connected to the two compressed air bladders through the air supply pipe assembly.

[0011] An argon gas delivery pipe is provided, and an argon gas outlet is provided on the connecting frame. One end of the argon gas delivery pipe is connected to the argon gas outlet, which is located between two compressed air bags.

[0012] In one embodiment, the pipeline argon arc welding auxiliary device further includes:

[0013] A drive mechanism is installed at the end of the connecting frame. The drive mechanism includes a drive motor and a moving wheel. The drive motor is connected to the moving wheel and drives the moving wheel to move along the inner wall of the pipe.

[0014] In one embodiment, the driving mechanism further includes a driving housing and a driving transmission assembly. The driving housing is fixed on the connecting frame, and the driving motor and the driving transmission assembly are located inside the driving housing. The driving transmission assembly is connected to the driving motor and the moving wheel, and the driving motor drives the moving wheel to rotate through the driving transmission assembly.

[0015] In one embodiment, the drive transmission assembly includes a worm, a rotating rod, and a turbine. The output end of the drive motor is connected to one end of the worm, and the other end of the worm is rotatably connected to the drive housing. The turbine is sleeved on the rotating rod and meshes with the worm. The rotating rod is rotatably connected to the drive housing. There are two movable wheels, and both ends of the rotating rod pass through the drive housing and are rotatably connected to the two movable wheels respectively.

[0016] In one embodiment, a ring of magnets is mounted on the outer circumferential surface of the movable wheel.

[0017] In one embodiment, the inflatable barrier mechanism further includes a connecting box, which is mounted on the connecting frame. The air pump is installed inside the connecting box. The air supply pipe assembly includes a connecting pipe, a main connecting pipe, and two connecting branch pipes. The air outlet of the air pump is connected to one end of the connecting pipe, and the other end of the connecting pipe is connected to the main connecting pipe. The two ends of the main connecting pipe are respectively connected to the two connecting branch pipes, and the two connecting branch pipes are respectively connected to the two compressed air bags.

[0018] In one embodiment, the inflation assembly further includes a fixed box and an airbag box. The airbag box is installed in the middle of the fixed box, and the compressed airbag is installed on the airbag box. When inflated, the compressed airbag can penetrate the outer peripheral surface of the fixed box and extend to the outside of the fixed box.

[0019] In one embodiment, the outer peripheral surface of the airbag box is provided with a groove that is recessed toward the center of the airbag box, the compressed airbag is located in the groove, and the center of the fixed box has an opening, the compressed airbag is placed inside the opening.

[0020] In one embodiment, the pipeline argon arc welding auxiliary device further includes an auxiliary moving mechanism, which is mounted on the connecting frame. The driving mechanism and the auxiliary moving mechanism are located at opposite ends of the connecting frame, and the gas-filling barrier mechanism is located between the auxiliary moving mechanism and the driving mechanism.

[0021] In one embodiment, the auxiliary moving mechanism includes an auxiliary moving housing, an auxiliary moving rod, and two auxiliary moving wheels. The auxiliary moving housing is mounted on the connecting frame, and the auxiliary moving rod is rotatably connected to the auxiliary moving housing. Both ends of the auxiliary moving rod pass through the auxiliary moving housing and are respectively connected to the two auxiliary moving wheels.

[0022] The advantages or beneficial effects of the above technical solutions include at least the following:

[0023] The pipeline argon arc welding auxiliary device of this application embodiment includes a connecting frame, an inflation blocking mechanism, and an argon gas supply pipe. The inflation blocking mechanism includes an air pump, a gas supply pipe assembly, and two inflation components. Each inflation component includes a compressed air bladder. The air outlet of the air pump is connected to the two compressed air bladders through the gas supply pipe assembly. The connecting frame has an argon gas outlet located between the two compressed air bladders. One end of the argon gas supply pipe is connected to the argon gas outlet. In use, the pipeline argon arc welding auxiliary device is first transported to the weld seam between two pipelines. Then, air is pumped into the compressed air bladders, causing them to expand and seal the two pipelines. Argon gas is then supplied to the argon gas supply pipe through an external gas storage tank, thereby delivering argon gas between the two compressed air bladders. After the argon arc welding is completed, the air pump extracts the air from the compressed air bladders, and then the device is removed from the pipeline. The pipeline argon arc welding auxiliary device in this application uses an air pump and a compressed air bag to seal the pipeline, eliminating the need for different sized sponges for sealing. This avoids the sponge being cut by the weld joint and remaining inside the pipeline when it is removed, thus preventing it from affecting the subsequent use of the pipeline.

[0024] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of this application will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0025] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0026] Figure 1A schematic diagram of the auxiliary device for pipeline argon arc welding;

[0027] Figure 2 This is a sectional view of the connecting box;

[0028] Figure 3 This is a cross-sectional view of the inflatable assembly;

[0029] Figure 4 This is a sectional view of the drive housing;

[0030] Figure 5 This is a schematic diagram of the moving wheel structure;

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Connecting frame; 2. Inflatable blocking mechanism; 3. Argon gas supply pipe; 21. Air pump; 22. Gas supply pipe assembly; 23. Inflating assembly; 231. Compressed airbag; 11. Argon gas outlet; 24. Connecting box; 221. Connecting pipe; 222. Connecting main pipe; 223. Connecting branch pipe; 232. Fixing box; 233. Airbag box; 4. Drive mechanism; 41. Drive motor; 42. Moving wheels; 43. Drive housing; 44. Drive transmission assembly; 441. Worm gear; 442. Rotating rod; 443. Turbine; 45. Magnet plate; 5. Auxiliary moving mechanism; 51. Auxiliary moving housing; 52. Auxiliary moving wheels. Detailed Implementation

[0033] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0034] like Figures 1 to 5 As shown in the figure, this application provides an auxiliary device for pipeline argon arc welding, including a connecting frame 1, an inflation blocking mechanism 2, and an argon gas supply pipe 3. The inflation blocking mechanism 2 is mounted on the connecting frame 1 and includes an air pump 21, a gas supply pipe assembly 22, and two inflation components 23. Each inflation component 23 includes two compressed air bags 231, located on opposite sides of the air pump 21. The air outlet of the air pump 21 is connected to the two compressed air bags 231 via the gas supply pipe assembly 22. An argon gas outlet 11 is provided on the connecting frame 1, and one end of the argon gas supply pipe 3 is connected to the argon gas outlet 11, which is located between the two compressed air bags 231.

[0035] When using the pipeline argon arc welding auxiliary device, the device is first transported to the weld seam between two pipelines. Then, air is pumped into the compressed air bladder 231 by the air pump 21, causing the compressed air bladder 231 to expand and seal the two pipelines. Argon gas is then supplied to the argon gas delivery pipe 3 through an external gas storage tank, thereby delivering argon gas between the two compressed air bladders 231. After the argon arc welding is completed, the air pump 21 removes the air from the compressed air bladders 231, and then the device is removed from the pipeline. The pipeline argon arc welding auxiliary device of this embodiment seals the pipeline through the cooperation of the air pump 21 and the compressed air bladders 231, eliminating the need for sealing with sponges of different sizes. This avoids sponges being cut by the weld joint and remaining inside the pipeline during removal, thus preventing any impact on the subsequent use of the pipeline.

[0036] Argon gas can be stored in an external storage tank or in a high-pressure cylinder. The other end of the argon gas delivery pipe 3 is connected to the outlet of the storage tank or high-pressure cylinder, thereby enabling the argon gas in the storage tank or high-pressure cylinder to be delivered out through the argon gas delivery pipe 3 and the argon gas outlet 11. In one embodiment, the argon gas delivery pipe 3 passes through the inside of the connecting frame 1.

[0037] In one embodiment, to achieve pipe sealing, the inflatable blocking mechanism 2 further includes a connecting box 24, which is mounted on the connecting frame 1, and the air pump 21 is installed inside the connecting box 24. The air supply pipe assembly 22 includes a connecting pipe 221, a main connecting pipe 222, and two connecting branch pipes 223. The air outlet of the air pump 21 is connected to one end of the connecting pipe 221, and the other end of the connecting pipe 221 is connected to the main connecting pipe 222. Both ends of the main connecting pipe 222 are respectively connected to the two connecting branch pipes 223, and the two connecting branch pipes 223 are respectively connected to two compressed air bags 231. Preferably, the ends of the two connecting branch pipes 223 that are far apart from each other pass through the connecting box 24 and through the connecting frame 1 before connecting to the compressed air bags 231.

[0038] When air pump 21 is started, it delivers air to the two compressed air bladders 231 via the main pipe 222 and two branch pipes 223, causing the compressed air bladders 231 to inflate. Once inflated, the compressed air bladders 231 make tight contact with the inner wall of the pipe, thus sealing the inside of the pipe. After argon arc welding is completed, air pump 21 is restarted and switched to its extraction mode, thereby extracting the control gas from the compressed air bladders 231, facilitating the removal of the device from the pipe.

[0039] The air pump 21 can be supplied with air from inside the connecting box 24, or with air drawn in from outside the connecting box 24 through the air inlet inside the air pump 21. When the air pump 21 extracts air from the compressed air bag 231, the extracted air can be either returned to the connecting box 24 or discharged to the outside of the connecting box 24.

[0040] In one embodiment, for mounting and securing the compressed airbag 231, the inflation assembly 23 further includes a fixing box 232 and an airbag box 233. The airbag box 233 is mounted in the middle of the fixing box 232, and the compressed airbag 231 is mounted on the airbag box 233. When inflated, the compressed airbag 231 can penetrate the outer peripheral surface of the fixing box 232 and extend to the outside of the fixing box 232. The airbag box 233 and the fixing box 232 can be connected by welding or bolts.

[0041] Furthermore, the outer circumferential surface of the airbag box 233 is provided with a groove recessed towards the center of the airbag box 233, and the compressed airbag 231 is located within the groove. The center of the fixing box 232 has an opening, and the compressed airbag 231 is placed inside the opening. Since the compressed airbag 231 is located within the groove and inside the opening, the groove and opening limit the position of the compressed airbag 231. Preferably, the compressed airbag 231 can be glued and fixed to the airbag box 233 with chemical adhesive or adhesive tape. The other end of the connecting branch pipe 223 is placed inside the fixing box 232, and the connecting bracket 1 can be located in the center of the compressed airbag 231.

[0042] In another embodiment, there may be two fixed boxes 232, and the airbag box 233 is placed between the two fixed boxes 232. The airbag box 233 is connected to the fixed boxes 232 by welding or bolting.

[0043] In one embodiment, the pipeline argon arc welding auxiliary device further includes a drive mechanism 4, which is installed at the end of the connecting frame 1 and drives the device to move. The drive mechanism 4 includes a drive motor 41 and a moving wheel 42, which are connected to each other. The drive motor 41 drives the moving wheel 42 to move along the inner wall of the pipeline.

[0044] The drive mechanism 4 also includes a drive housing 43 and a drive transmission assembly 44. The bottom of the drive housing 43 is fixed to the connecting frame 1 by bolts or welding. The drive motor 41 and the drive transmission assembly 44 are installed on the inner wall of the drive housing 43. The drive transmission assembly 44 is connected to the drive motor 41 and the moving wheel 42. The drive motor 41 drives the moving wheel 42 to rotate through the drive transmission assembly 44.

[0045] Furthermore, the drive transmission assembly 44 includes a worm gear 441, a rotating rod 442, and a turbine 443. The output end of the drive motor 41 is connected to one end of the worm gear 441 via a reducer, and the other end of the worm gear 441 is rotatably connected to the drive housing 43. The turbine 443 is sleeved on the rotating rod 442 and meshes with the worm gear 441. The rotating rod 442 is rotatably connected to the drive housing 43, and there are two movable wheels 42. The two ends of the rotating rod 442 pass through the drive housing 43 and are rotatably connected to the two movable wheels 42 respectively.

[0046] After the drive motor 41 starts, it drives the worm gear 441 to rotate. Since the worm gear 441 meshes with the worm wheel 443, the rotation of the worm gear 441 drives the worm wheel 443 to rotate, which in turn drives the rotating rod 442 to rotate. The rotation of the rotating rod 442 drives the two moving wheels 42 to rotate, thus enabling the moving wheels 42 to move on the inner wall of the pipe. When the drive motor 41 rotates in the opposite direction, the moving wheels 42 can be used to move the device out of the pipe.

[0047] To enable the device to move inside an inclined pipe, a ring of magnetic plates 45 is installed on the outer circumference of the moving wheel 42. The magnetic plates 45 can be mounted on the moving wheel 42 with screws or the like. After the device is placed inside the pipe, the magnetic plates 45 can attract the moving wheel 42 to the inner wall of the pipe, thereby enabling the pipe argon arc welding auxiliary device to move inside the inclined pipe.

[0048] In one embodiment, there may be two drive mechanisms 4, which are respectively installed at both ends of the connecting frame 1, and the inflatable barrier mechanism 2 is located between the two drive mechanisms 4.

[0049] In another embodiment, the pipeline argon arc welding auxiliary device further includes an auxiliary moving mechanism 5, which is mounted on the connecting frame 1. The driving mechanism 4 and the auxiliary moving mechanism 5 are located at the two ends of the connecting frame 1, and the gas-filling blocking mechanism 2 is located between the auxiliary moving mechanism 5 and the driving mechanism 4.

[0050] The auxiliary moving mechanism 5 includes an auxiliary moving housing 51, an auxiliary moving rod, and two auxiliary moving wheels 52. The auxiliary moving housing 51 is mounted on the connecting frame 1. The auxiliary moving rod is rotatably connected to the auxiliary moving housing 51, and both ends of the auxiliary moving rod pass through the auxiliary moving housing 51 and are connected to the two auxiliary moving wheels 52 respectively. A ring of magnets 45 is also installed on the outer circumference of the auxiliary moving wheels 52. The argon gas delivery pipe 3 passes through the auxiliary moving housing 51 and enters the interior of the connecting frame 1.

[0051] When using the pipeline argon arc welding auxiliary device, the operator first places the device inside one end of the pipeline. Then, the drive motor 41 drives the rotating rod 442 to rotate, which in turn drives the moving wheel 42 to rotate. The magnet 45 on the moving wheel 42 is attracted to the inner wall of the pipeline, enabling the pipeline argon arc welding auxiliary device to move inside the pipeline. When the pipeline argon arc welding auxiliary device moves to the weld seam between two pipelines, air is then delivered to the compressed air bladder 231 by the air pump 21, causing the compressed air bladder 231 to inflate. After the compressed air bladder 231 inflates, it seals the two pipelines, making the space between the two compressed air bladders 231 closed, and the weld seam is located within the closed space between the two compressed air bladders 231. Then, argon gas is delivered between the two compressed air bladders 231 through the argon gas supply pipe 3. After the argon arc welding is completed, the air pump 21 extracts the air from the compressed air bladder 231, causing the compressed air bladder 231 to retract back into the groove. Finally, the drive motor 41 drives the moving wheel 42 in reverse to move the pipe argon arc welding auxiliary device out of the pipe.

[0052] The pipeline argon arc welding auxiliary device of this application embodiment can seal pipelines of different diameters using a compressed air bladder 231, eliminating the need for sealing pipelines of different diameters with different sized sponges, and preventing argon gas leakage after sealing. Since no sponge is needed for sealing, sponge debris is prevented from remaining inside the pipeline when the sponge is removed. This application embodiment utilizes the coordinated use of a drive motor 41, a worm gear 441, and a turbine 443, enabling the pipeline argon arc welding auxiliary device to move inside the pipeline and quickly reach between two pipelines, improving work efficiency.

[0053] It should be noted that the drive motor 41 and air pump 21 in this application are both existing products, and they are both controlled by existing PLC systems.

[0054] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0056] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A pipe argon arc welding assist device characterized by, The utility model provides a pipeline argon arc welding auxiliary device, which comprises a connecting frame, an argon gas outlet arranged on the connecting frame, an inflation blocking mechanism mounted on the connecting frame, the inflation blocking mechanism comprising a gas pump, a gas pipe assembly and two inflation assemblies, each of the two inflation assemblies comprising a compressed air bag, the gas outlet of the gas pump being connected to the two compressed air bags through the gas pipe assembly, and an argon gas pipe connected to the argon gas outlet and located between the two compressed air bags. The pipeline argon arc welding auxiliary device further comprises a driving mechanism mounted on the end of the connecting frame, the driving mechanism comprising a driving motor and a moving wheel, the driving motor being connected to the moving wheel, and the driving motor driving the moving wheel to move along the inner wall of the pipeline. The driving mechanism further comprises a driving box and a driving transmission assembly, the driving box being fixed to the connecting frame, the driving motor and the driving transmission assembly being arranged in the driving box, the driving transmission assembly being connected to the driving motor and the moving wheel, and the driving motor driving the moving wheel to rotate through the driving transmission assembly. The driving transmission assembly comprises a worm, a rotating rod and a turbine, the output end of the driving motor being connected to one end of the worm, the other end of the worm being rotatably connected to the driving box, the turbine being sleeved on the rotating rod, the turbine being engaged with the worm, the rotating rod being rotatably connected to the driving box, and the moving wheel being provided in two, the two ends of the rotating rod penetrating through the driving box and being rotatably connected to the two moving wheels respectively.

2. The pipelined argon arc welding assist apparatus according to claim 1, characterized by, A ring of magnet pieces is arranged on the outer circumferential surface of the moving wheel. The inflation blocking mechanism further comprises a connecting box mounted on the connecting frame, the gas pump being arranged in the connecting box, the gas pipe assembly comprising a connecting pipe, a main connecting pipe and two branch connecting pipes, the gas outlet of the gas pump being connected to one end of the connecting pipe, the other end of the connecting pipe being connected to the main connecting pipe, the two ends of the main connecting pipe being connected to the two branch connecting pipes respectively, and the two branch connecting pipes being connected to the two compressed air bags respectively.

3. The pipelined argon arc welding assist apparatus according to claim 2, characterized by, The inflation assembly further comprises a fixing box and an air bag box, the air bag box being arranged in the middle part of the fixing box, the compressed air bag being arranged on the air bag box, and the compressed air bag being capable of penetrating through the outer circumferential surface of the fixing box and extending to the outside of the fixing box in the inflated state.

4. The pipelined argon arc welding assist apparatus according to claim 3, characterized by A ring of recesses recessed towards the middle part of the air bag box is arranged on the outer circumferential surface of the air bag box, the compressed air bag being arranged in the recesses, and the middle part of the fixing box being provided with a ring of opening parts, the compressed air bag being arranged in the opening parts.

5. The pipelined argon arc welding assist apparatus according to claim 4, characterized by The pipeline argon arc welding auxiliary device further comprises an auxiliary moving mechanism mounted on the connecting frame, the driving mechanism and the auxiliary moving mechanism being arranged at the two ends of the connecting frame respectively, and the inflation blocking mechanism being arranged between the auxiliary moving mechanism and the driving mechanism.

6. A TIG torch according to any one of claims 1 to 5, wherein ​ 7. A TIG torch according to any one of claims 1 to 5, wherein ​ 8. The pipelined argon arc welding assist apparatus according to claim 7, characterized by ​ 9. The pipelined argon arc welding assist apparatus according to claim 5, wherein, ​ 10. The pipelined argon arc welding assist apparatus according to claim 9, wherein, The auxiliary moving mechanism comprises an auxiliary moving box, an auxiliary moving rod and two auxiliary moving wheels, the auxiliary moving box is installed on the connecting frame, the auxiliary moving rod is rotationally connected with the auxiliary moving box, and two ends of the auxiliary moving rod are respectively connected with the two auxiliary moving wheels after penetrating through the auxiliary moving box.

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