Welding equipment for special gas pipeline

Abstract

The invention relates to the technical field of pipeline welding equipment, in particular to welding equipment for a special gas pipeline, which comprises a clamping mechanism and a welding mechanism, the clamping mechanism is used for clamping the pipeline, the welding mechanism comprises a welding space and a welding head, and the welding head is arranged in the welding space. The welding head is arranged in the welding space, the welding head is used for welding a pipeline, the clamping mechanism comprises a clamping opening, the clamping opening is located in the welding space, the clamping mechanism is connected with a water cooling system and a gas protection system, and the gas protection system is used for providing protective gas. The water cooling system comprises a heat conducting plate and a water path circulating pipeline, at least part of the heat conducting plate is arranged at the position of the welding space, the heat conducting plate is used for conducting heat generated during welding, and the water path circulating pipeline is connected with the heat conducting plate and used for cooling the heat conducting plate.

Description

Technical Field

[0001] The present disclosure relates to the technical field of pipeline welding equipment, and in particular to a welding equipment for special gas pipelines. Background Art

[0002] Specialty gases emerged in the mid-1960s and are basic chemical materials. Specialty gases can usually be divided into electronic gases, standard gases, environmental protection gases, medical gases, welding gases, sterilization gases, etc. They are widely used in electronics, electric power, petrochemicals, mining, steel, non-ferrous metal smelting, thermal engineering, biochemistry, environmental monitoring, medical research and diagnosis, food preservation and other fields.

[0003] The inner diameter of special gas pipelines (special gas pipelines) is usually small, generally between 3mm and 12.7mm in diameter. When welding between pipelines, either manual welding or welding equipment is used. Welding requires protection in a rare gas atmosphere. Due to the high temperature during welding, a water cooling system is also required to cool it down. The water cooling system and rare gas protection chamber of existing welding equipment are both arranged at the position of the clamping mechanism, which requires sufficient space to be reserved for the water cooling system and the rare gas protection chamber at the position of the clamping mechanism. This will result in the entire clamping mechanism being larger in size and having thicker walls. When welding with welding equipment, the clamping mechanism of the welding equipment must clamp the pipeline. Due to the thick wall thickness of the clamping mechanism, the welding space in some parts is very limited, which makes welding difficult. Summary of the Invention

[0004] In response to the deficiencies or problems in the prior art, the present disclosure provides a welding device for special gas pipelines, which is easy to operate when welding small-sized special gas pipelines and has good welding effect.

[0005] The technical solution adopted by the present disclosure to solve the above-mentioned technical problems is: a welding device for special gas pipelines, including a clamping mechanism and a welding mechanism, the clamping mechanism is used to clamp the pipeline, the welding mechanism includes a welding space and a welding head, the welding head is arranged in the welding space, the welding head is used to weld the pipeline, the clamping mechanism includes a clamping port, the clamping port is close to the welding space, the clamping mechanism is connected to a water cooling system and a gas protection system, the gas protection system is used to provide protective gas, the water cooling system includes a heat conduction plate and a water circulation pipeline, the heat conduction plate is at least partially arranged at the position of the welding space, the heat conduction plate is used to conduct heat generated during welding, the water circulation pipeline is connected to the heat conduction plate, and the water circulation pipeline is used to cool the heat conduction plate.

[0006] As a preferred embodiment, the water circulation pipeline is at least partially arranged in the middle and lower part of the heat conducting plate.

[0007] As a preferred embodiment, the clamping mechanism includes a first clamp and a second clamp, the welding space is arranged between the first clamp and the second clamp, the first clamp is used to clamp the first pipe, the second clamp is used to clamp the second pipe, the first clamp and the second clamp are connected by a first connecting piece, and the heat conducting plate is arranged between the first clamp and the second clamp.

[0008] As a preferred embodiment, the clamping port includes a first clamping port, the first clamp includes a first upper plate body and a first lower plate body, the first upper plate body is provided with a first recess, the first lower plate body is provided with a second recess, after the first upper plate body and the first lower plate body are connected, the first clamping port is enclosed by the first recess and the second recess, and the first pipe is clamped in the first clamping port.

[0009] As a preferred embodiment, at least two first protrusions are provided on the first concave, and at least one first hollow structure is provided on the first upper plate body, and the first hollow structure is connected to the first concave; at least two second protrusions are provided on the second concave, and at least one second hollow structure is provided on the first lower plate body, and the second hollow structure is connected to the second concave.

[0010] As a preferred embodiment, the clamping port also includes a second clamping port, the second clamp includes a second upper plate body and a second lower plate body, the second upper plate body is provided with a third recess, and the second lower plate body is provided with a fourth recess. After the second upper plate body and the second lower plate body are connected, the second clamping port is enclosed by the third recess and the fourth recess, and the second pipe is clamped in the second clamping port.

[0011] As a preferred embodiment, at least two third protrusions are provided on the third concave, at least one third hollow structure is provided on the second upper plate, and the third hollow structure is connected to the third concave; at least two fourth protrusions are provided on the fourth concave, at least one fourth hollow structure is provided on the second lower plate, and the fourth hollow structure is connected to the fourth concave.

[0012] As a preferred embodiment, a transmission mechanism is provided between the second clamp and the heat conducting plate, and the welding head is provided on the transmission mechanism, and the transmission mechanism is used to drive the welding head to rotate.

[0013] As a preferred embodiment, the water circulation pipeline includes a first pipeline, a water inlet pipeline and a water outlet pipeline, the first pipeline is arranged on the heat conduction plate, the water inlet pipeline is used to connect to the water source, the water outlet pipeline is used for drainage, the water inlet pipeline and the water outlet pipeline are arranged below the first pipeline, and the first pipeline is respectively connected to the water inlet pipeline and the water outlet pipeline.

[0014] As a preferred embodiment, the first pipeline is arranged along the width direction of the heat conducting plate, and the water inlet pipeline and the water outlet pipeline are arranged in parallel.

[0015] As a preferred embodiment, the gas protection system includes a first air inlet pipeline and an air inlet channel, one end of the first air inlet pipeline is connected to the gas source, the other end of the first air inlet pipeline is connected to the air inlet channel, the air inlet channel is connected to the welding space, and the gas source flows from the air inlet channel to the welding space.

[0016] As a preferred embodiment, it also includes a shell, which includes a first shell and a second shell, the first shell and the first clamp are arranged on the same side, and the first shell is arranged below the first clamp, the second shell and the second clamp are arranged on the same side, and the second shell is arranged below the second clamp, the first shell and the second shell are covered to form an accommodating cavity, the water inlet pipe and the water outlet pipe are at least partially arranged in the accommodating cavity; the first air inlet pipe is at least partially arranged in the accommodating cavity.

[0017] As a preferred embodiment, a first connecting block is provided between the shell and the clamping mechanism, wherein the first connecting block is at least partially located in the accommodating cavity, and the water inlet pipe and the water outlet pipe respectively pass through the first connecting block.

[0018] As a preferred embodiment, the first air intake pipeline is provided on the first connecting block, the air intake channel includes a first channel, the first channel is provided on the first connecting block, and the first air intake pipeline is communicated with the first channel.

[0019] As a preferred embodiment, the air intake channel also includes at least one second channel, a second connecting block is arranged between the first connecting block and the first clamp, the second channel is arranged on the second connecting block, and the second channel is connected to the first channel; the second connecting block is provided with at least one third channel, the third channel runs through the second connecting block, the number of the third channels is the same as that of the second channels, and the third channel is connected to the second channel.

[0020] As a preferred embodiment, a first accommodating groove and two second accommodating grooves are provided on the second connecting block, the first accommodating groove is used to accommodate the first pipeline, and the two second accommodating grooves are used to accommodate the water inlet pipeline and the water outlet pipeline respectively.

[0021] As a preferred embodiment, the second connecting block is connected to a connecting plate assembly, and the air intake channel further includes at least one fourth channel, which is provided on the connecting plate assembly and communicates with the third channel.

[0022] As a preferred embodiment, the connecting plate assembly includes a first connecting plate and a second connecting plate, the first connecting plate is arranged between the first clamp and the second clamp, the first connecting plate is connected to the second connecting block, the second connecting plate is arranged between the second clamp and the first connecting block, and the first connecting plate and the second connecting plate are connected to form a first air inlet groove and a second air inlet groove, the fourth channel includes a first air inlet groove, a second air inlet groove and a first through hole passing through the first connecting plate, the first through hole is connected to the third channel, the protective gas enters the first through hole from the third channel, and then enters the first air inlet groove and the second air inlet groove in sequence from the first through hole.

[0023] As a preferred embodiment, a notch is provided on the side of the first air inlet groove, the first air inlet groove and the second air inlet groove are connected through the notch, a first guide structure is provided on the first connecting plate, a second guide structure is provided on the second connecting plate, and a third guide structure is provided on the second lower plate body. The first guide structure cooperates with the second guide structure and the third guide structure to introduce the gas in the second air inlet groove into the welding space.

[0024] As a preferred embodiment, the air intake channel also includes a fifth channel, which includes a second through hole passing through the first connecting plate and a third through hole passing through the second connecting block. The protective gas enters the first through hole from the third channel and then enters the first air intake groove from the first through hole. Part of the protective gas in the first air intake groove enters the second air intake groove and part enters the fifth channel.

[0025] As a preferred embodiment, the air inlet channel also includes a sixth channel, which is connected to the fifth channel. A cover plate is connected to the second connecting block, and the cover plate is arranged below the first lower plate body. The sixth channel is arranged on the cover plate. A fourth guide structure is provided on the second connecting block, and a fifth guide structure is also provided on the fourth cover plate. The sixth guide structure is provided on the first lower plate body. The fourth guide structure cooperates with the fifth guide structure and the sixth guide structure respectively to introduce the gas in the sixth channel into the welding space.

[0026] As a preferred embodiment, the transmission mechanism is a gear assembly, the gear assembly includes a first gear, the first gear is an annular structure, the welding head is arranged in the annular structure, and the welding space is located in the annular structure.

[0027] Compared with existing products, since the water cooling system includes a heat conduction plate and a water circulation pipeline, the heat conduction plate is at least partially arranged at the position of the welding space, the heat conduction plate is used to conduct the heat generated during welding, and the water circulation pipeline is connected to the heat conduction plate, and the water circulation pipeline is used to cool the heat conduction plate. The heat conduction plate is a plate-shaped structure, which saves more space and does not make the wall thickness of the clamping mechanism too thick to affect the clamping of small-sized pipes; the heat generated during welding is transferred to the heat conduction plate, and the water circulation pipeline cools the heat conduction plate to achieve the purpose of cooling the welding space. In this way, it can not only cool down well, but also conveniently weld small-sized special gas pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present application will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present application. In addition, unless otherwise specified, the drawings are merely schematic representations of the composition or structure of the described objects and may contain exaggerated representations. The drawings are not necessarily drawn to scale.

[0029] Figure 1 This is one of the structural schematic diagrams of a welding device for special gas pipelines disclosed in the present invention;

[0030] Figure 2 This is the second structural schematic diagram of a welding device for special gas pipelines disclosed in the present invention;

[0031] Figure 3 is a cross-sectional view of a welding device for a specialty gas pipeline disclosed herein;

[0032] Figure 4 This disclosure Figure 3 A partial enlarged view of point A in the middle;

[0033] Figure 5 This is the third structural schematic diagram of a welding device for special gas pipelines disclosed in the present invention;

[0034] Figure 6 is a structural diagram of the second connection block of the present disclosure;

[0035] Figure 7 This is the fourth structural schematic diagram of a welding device for special gas pipelines disclosed in the present invention;

[0036] Figure 8 This disclosure Figure 7 A partial enlarged view of point B in the middle;

[0037] Figure 9 is a schematic structural diagram of the connection between the second clamp and the second connecting plate of the present disclosure;

[0038] Figure 10 This disclosure Figure 9 A partial enlarged view of point C in the middle;

[0039] Figure 11 is a schematic structural diagram of the connection between the first clamp and the cover plate of the present disclosure;

[0040] Figure 12 This disclosure Figure 11 A partial enlarged view of point D in the middle;

[0041] Figure 13 This is the fifth structural schematic diagram of a welding device for special gas pipelines disclosed in the present invention.

[0042] Description of reference numerals:

[0043] 1. First upper plate; 111. First protrusion; 112. First hollow structure; 2. First lower plate; 211. Second protrusion; 212. Second hollow structure; 213. Sixth flow guide structure; 3. First clamping opening; 4. Second upper plate; 41. Third protrusion; 42. Third hollow structure; 5. Second lower plate; 51. Third flow guide structure; 52. Fourth protrusion; 53. Fourth hollow structure; 6. Second clamping opening; 7. First connecting block; 71. Mounting channel; 8. Second connecting block; 81. First accommodating groove; 82. Second accommodating groove; 83. Connecting plate; 84. Third through hole; 85. Fourth flow guide structure; 9. Cover plate; 91. Fifth flow guide structure 10. Observation window; 11. First shell; 12. Second shell; 13. Rotating motor; 14. Heat conduction plate; 15. Welding head; 16. First connecting plate; 161. First flow guide structure; 162. Second through hole; 17. Second connecting plate; 171. Second flow guide structure; 18. Welding space; 100. First air inlet pipe; 101. First channel; 1011. Transverse channel; 1012. Longitudinal channel; 102. Second channel; 103. Third channel; 1041. First air inlet groove; 1042. Second air inlet groove; 1043. First through hole; 105. Sixth channel; 200. First pipeline; 201. Water inlet pipeline; 202. Water outlet pipeline. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, the present disclosure is described in detail, clearly, and completely in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and are not intended to limit the present disclosure.

[0045] Those skilled in the art should understand that, in the disclosure of the present invention, the orientation or positional relationship indicated by terms such as "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", and "outside" are based on the orientation or positional relationship shown in the accompanying drawings, which 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 operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0046] Please see Figures 1 to 5 and Figure 13 As shown, an embodiment of the present disclosure provides a welding device for special gas pipelines, including a clamping mechanism and a welding mechanism, the clamping mechanism is used to clamp the pipeline, the welding mechanism includes a welding space 18 and a welding head 15, the welding head 15 is arranged in the welding space 18, the welding head 15 is used to weld the pipeline, the clamping mechanism includes a clamping port, the clamping port is close to the welding space 18, the clamping mechanism is connected to a water cooling system and a gas protection system, the gas protection system is used to provide protective gas to avoid chemical reactions such as oxidation of the pipeline during welding, the water cooling system includes a heat conducting plate 14 and a water circulation pipeline, the water circulation pipeline is at least partially arranged in the middle and lower part of the heat conducting plate 14, the heat conducting plate 14 is at least partially arranged at the position of the welding space 18, the heat conducting plate 14 is used to conduct heat generated during welding, the water circulation pipeline is connected to the heat conducting plate 14, and the water circulation pipeline is used to cool the heat conducting plate 14. The heat conducting plate 14 is a plate-shaped structure, which saves more space. The heat conducting plate 14 is set at the position of the welding space 18, and the water circulation pipeline is set below the heat conducting plate 14, so that the wall thickness of the clamping mechanism will not be too thick to affect the clamping of small-sized pipes; the heat generated during welding is transferred to the heat conducting plate 14, and the water circulation pipeline cools the heat conducting plate 14 to achieve the purpose of cooling the welding space 18. In this way, it can not only cool down well, but also conveniently weld small-sized special gas pipelines.

[0047] In one embodiment of the present disclosure, the clamping mechanism includes a first clamp and a second clamp of a plate-like structure, and a welding space 18 is provided between the first clamp and the second clamp. The first clamp is used to clamp the first pipe, and the second clamp is used to clamp the second pipe, so that the ends of the first pipe and the second pipe are in contact. The place where the first pipe and the second pipe are in contact is located in the welding space 18. The welding head 15 welds the place where the two are in contact, so that the first pipe and the second pipe are connected. The first clamp and the second clamp are connected by a first connecting member, and the heat conducting plate 14 is provided between the first clamp and the second clamp. A transmission mechanism is provided between the second clamp and the heat conducting plate 14, and the welding head 15 is provided on the transmission mechanism, and the transmission mechanism is used to drive the welding head 15 to rotate. Specifically, the welding head 15 is a tungsten electrode, the first connecting member is a bolt, and the transmission mechanism is further connected to a driving mechanism, the driving mechanism is a rotating motor 13, and the transmission mechanism is a gear assembly. The gear assembly includes a first gear, and the first gear is an annular structure. The welding head 15 is provided in the annular structure, and the welding space 18 is located in the annular structure.

[0048] like Figures 9 to 12As shown, in one embodiment of the present disclosure, the clamping opening includes a first clamping opening 3, and the first clamp includes a first upper plate 1 and a first lower plate 2. The first upper plate 1 is provided with a first recess, and the first lower plate 2 is provided with a second recess. After the first upper plate 1 and the first lower plate 2 are connected, the first clamping opening 3 is enclosed by the first recess and the second recess. The first pipe is clamped in the first clamping opening 3 so that the end of the first pipe to be welded is located in the welding space 18. Two first protrusions 111 are provided on the first recess, and two first hollow structures 112 are provided on the first upper plate 1. The first hollow structure 112 is connected to the first recess; two second protrusions 211 are provided on the second recess, and two second hollow structures 212 are provided on the first lower plate 2. The second hollow structure 212 is connected to the second recess. Since the pipes are all cylindrical in design, when the first pipe is located in the first clamping opening 3, the first pipe and the first clamping opening 3 must be in surface contact to ensure that the first pipe is well fixed in the first clamping opening 3. If the first clamping opening 3 is slightly mismatched with the curved surface of the first pipe, the first pipe is likely to wobble in the first clamping opening 3, directly affecting the welding results and welding efficiency. The purpose of providing the first protrusion 111 and the second protrusion 211 in the first clamping opening 3 is to make the first pipe contact with the first protrusion 111 and the second protrusion 211 respectively. The contact between the first pipe and the first protrusion 111 and the second protrusion 211 is point contact, that is, the original surface contact is changed to point contact. The two first protrusions 111 are located at the top and the two second protrusions 211 are located at the bottom, which can effectively clamp the first pipe. After clamping, there is a gap between the first pipe and other positions of the first clamping opening 3 (that is, the position where the first protrusion 111 and the second protrusion 211 are not provided). This gap is equivalent to a "margin space". Even if the curved surface of the first pipe does not fully match the curved surface of the first clamping opening 3, it will not affect the clamping effect. Since the clamping mechanism needs to clamp pipes of different sizes and models, the first hollow structure 112 and the second hollow structure 212 provide deformation space for the first clamping opening 3 to adapt to pipes of different sizes and specifications.

[0049] Furthermore, the clamping opening also includes a second clamping opening 6. The second clamp includes a second upper plate 4 and a second lower plate 5. The second upper plate 4 is provided with a third recess, and the second lower plate 5 is provided with a fourth recess. After the second upper plate 4 and the second lower plate 5 are connected, the second clamping opening 6 is enclosed by the third and fourth recesses. The second pipe is clamped in the second clamping opening 6 so that the end of the second pipe to be welded is located in the welding space 18. Two third protrusions 41 are provided on the third recess, and two third hollow structures 42 are provided on the second upper plate 4. The third hollow structures 42 are connected to the third recess. Two fourth protrusions 52 are provided on the fourth recess, and two fourth hollow structures 53 are provided on the second lower plate 5. The fourth hollow structure 53 is connected to the fourth recess. The functions of the third protrusion 41 and the fourth protrusion 52 are the same as those of the first protrusion 111 and the second protrusion 211 mentioned above; the functions of the third hollow structure 42 and the fourth hollow structure 53 are the same as those of the first hollow structure 112 and the second hollow structure 212 mentioned above, and will not be repeated here.

[0050] like Figures 3 to 5 、 Figure 7 As shown, it should be noted that the water circulation pipeline includes a first pipeline 200, a water inlet pipeline 201 and a water outlet pipeline 202. The first pipeline 200 is arranged below the heat conducting plate 14 (i.e., away from the clamping port) to avoid thickening the wall thickness at the clamping port. The first pipeline 200 is arranged along the width direction of the heat conducting plate 14. The water inlet pipeline 201 is used to connect to the water source, and the water outlet pipeline 202 is used for drainage. The water inlet pipeline 201 and the water outlet pipeline 202 are arranged in parallel below the first pipeline 200, and the first pipeline 200 is respectively connected to the water inlet pipeline 201 and the water outlet pipeline 202. Specifically, a mounting groove is provided on the first connecting plate 16, and the gear assembly is provided in the mounting groove. The heat conducting plate 14 is close to the welding space 18. During the welding process, the heat of the welding space 18 will be transferred to the heat conducting plate 14. The water circulation pipeline cools the heat conducting plate 14, so that the heat conducting plate 14 dissipates heat quickly, thereby quickly dissipating the heat of the welding space 18 and the welding head 15. The first pipeline 200 is arranged along the width direction of the heat conducting plate 14 to make the heat dissipation of the heat conducting plate 14 more uniform. The cooling water source enters from the water inlet pipeline 201, flows through the first pipeline 200, and is discharged from the water outlet pipeline 202, so that the water in the first pipeline 200 is in a circulating state, so that the water in the first pipeline 200 can take away more heat, thereby cooling the heat conducting plate 14 more quickly, and dissipating heat quickly from the welding space 18 and the first connecting plate 16.

[0051] In one embodiment of the present disclosure, the gas protection system includes a first air inlet pipeline 100 and an air inlet channel. One end of the first air inlet pipeline 100 is connected to a gas source (the gas source is a rare gas, such as argon or helium, etc.), and the other end of the first air inlet pipeline 100 is connected to the air inlet channel. The air inlet channel is connected to the welding space 18, and the gas source flows from the air inlet channel to the welding space 18.

[0052] The welding equipment for special gas pipelines also includes a shell, which is a welding handle that facilitates workers' operation. An angle counter is provided in the shell for checking the welding angle. The shell includes a first shell 11 and a second shell 12. The first shell 11 and the first clamp are arranged on the same side, and the first shell 11 is arranged below the first clamp. The second shell 12 and the second clamp are arranged on the same side, and the second shell 12 is arranged below the second clamp. The first shell 11 and the second shell 12 are covered to form a accommodating chamber. The water inlet pipe 201 and the water outlet pipe 202 are at least partially arranged in the accommodating chamber; the first air inlet pipe 100 is at least partially arranged in the accommodating chamber. The water inlet pipe 201, the water outlet pipe 202 and the first air inlet pipe 100 are at least partially arranged in the accommodating chamber. This greatly reduces the thickness of the clamping mechanism, so that the clamping mechanism has a larger operating space when clamping the pipeline, and the operation is more convenient. A first connecting block 7 is provided between the shell and the clamping mechanism. The lower part of the first connecting block 7 is located in the accommodating cavity. The water inlet pipe 201 and the water outlet pipe 202 pass through the first connecting block 7 respectively. The first connecting block 7 plays a role in limiting and fixing the water inlet pipe 201 and the water outlet pipe 202.

[0053] like Figures 2 to 6As shown, in one embodiment of the present disclosure, a first air intake pipe 100 is disposed on the first connecting block 7. The air intake passage includes a first channel 101 and two second channels 102. The first channel 101 is disposed on the first connecting block 7, and the first air intake pipe 100 is in communication with the first channel 101. Specifically, the first channel 101 is a channel disposed inside the first connecting block 7. The first connecting block 7 is provided with a mounting channel 71. One end of the first air intake pipe 100 is disposed on the mounting channel 71. The first channel 101 includes a transverse channel 1011 and two longitudinal channels 1012. The transverse channel 1011 is in communication with the two longitudinal channels 1012, respectively. The transverse channel 1011 is disposed along the length of the first connecting block 7. The mounting channel 71 is in communication with the transverse channel 1011. A second connecting block 8 is disposed between the first connecting block 7 and the first fixture. The second channel 102 is disposed on the second connecting block 8, and the second channel 102 is in communication with the first channel 101. Specifically, the two second channels 102 are arranged in an "eight" shape inside the second connecting block 8, and one end of the two second channels 102 is respectively connected to the two longitudinal channels 1012. In order to enhance the sealing performance, the two second channels 102 are connected to the two longitudinal channels 1012 with sealing rings. The second connecting block 8 is provided with two third channels 103, and the third channels 103 pass through the second connecting block 8. The third channels 103 are actually through-hole structures. In order to make the structure more compact, the second connecting block 8 is provided with a first accommodating groove 81 and two second accommodating grooves 82. The first accommodating groove 81 is used to accommodate the first pipeline 200, and the two second accommodating grooves 82 are used to accommodate the water inlet pipeline 201 and the water outlet pipeline 202, respectively. The first channel 101 and the second channel 102 are groove structures provided on the components. Such an arrangement enables the delivery of protective gas without adding additional components, further streamlining the structure of the equipment.

[0054] Please also refer to Figures 7 to 9As shown, further, the second connecting block 8 is connected to a connecting plate assembly, and the air intake channel further includes two fourth channels, which are arranged on the connecting plate assembly, and the two fourth channels are respectively connected to the two third channels 103. Specifically, the connecting plate assembly includes a first connecting plate 16 and a second connecting plate 17, the first connecting plate 16 is arranged between the first clamp and the second clamp, the second connecting block 8 includes a connecting plate body 83, the first connecting plate 16 is connected to the connecting plate body 83, the second connecting plate 17 is arranged between the second clamp and the first connecting block 7, and the first connecting plate 16 and the second connecting plate 17 are connected to form a first air inlet groove 1041 and a second air inlet groove 1042. The fourth channel includes a first air inlet groove 1041, a second air inlet groove 1042 and a first through hole 1043 that passes through the first connecting plate 16. The first through hole 1043 is arranged in the first air inlet groove 1041, and the first through hole 1043 is connected to the third channel 103. The protective gas enters the first through hole 1043 from the third channel 103, and then enters the first air inlet groove 1041 and the second air inlet groove 1042 in sequence from the first through hole 1043. Preferably, a first ridge is provided on the first connecting plate 16, and a second ridge is provided at a corresponding position on the second connecting plate 17. The profile of the second ridge matches that of the first ridge. When the first and second connecting plates 16 and 17 are connected, the first ridge is located inside the second ridge, and the first and second ridges are aligned, forming the first air inlet groove 1041. A first recess is provided on the second connecting plate 17, and notches are provided on the sides of both the first and second ridges. The first recess is provided between the two first air inlet grooves 1041, and its two ends are connected to the two notches. The first recess serves as the second air inlet groove 1042. The first connecting plate 16 is provided with a first flow-guiding structure 161, which includes a concave structure and ridges disposed on either side of the concave structure. The second connecting plate 17 is provided with a second flow-guiding structure 171, which is a recessed structure disposed above and connected to the second air inlet groove 1042. The second lower plate 5 is provided with a third flow-guiding structure 51, which is a chute that cooperates with the ridges on the first connecting plate 16. After the first connecting plate 16 and the second lower plate 5 are connected, the ridges are located in the chute. Due to the concave structure of the first connecting plate 16, gas flows from the concave structure to the welding space 18. The shielding gas flows from the first air inlet groove 1041 through the notch to the second air inlet groove 1042, then passes through the second flow-guiding structure 171 and the concave structure, and finally enters the welding space 18. A chute is provided on the second lower plate 5 so as to achieve the guidance and transportation of gas without increasing the thickness of the second lower plate 5 .

[0055] Please also refer to Figure 11 and Figure 13As shown, in particular, the air inlet channel also includes a fifth channel, which includes a second through hole 162 penetrating the first connecting plate 16 and a third through hole 84 penetrating the second connecting block 8. The shielding gas enters the first through hole 1043 through the third channel 103, and then enters the first air inlet groove 1041 through the first through hole 1043. The shielding gas in the first air inlet groove 1041 partially enters the second air inlet groove 1042, and partially enters the fifth channel. Specifically, the second through hole 162 is provided in the first air inlet groove 1041, and the second through hole 162 is provided above the first through hole 1043. More specifically, the second through hole 162 is almost at the same level as the notch on the first air inlet groove 1041. The shielding gas in the first air inlet groove 1041 partially enters the second air inlet groove 1042, partially enters the second through hole 162, and then enters the third through hole 84 through the second through hole 162.

[0056] Furthermore, the air inlet passage also includes a sixth passage 105, which communicates with the third through hole 84. A cover plate 9 is connected to the connecting plate body 83. The second connecting block 8 and the cover plate 9 are bolted to the first connecting plate 16 and the second connecting plate 17. The cover plate 9 is disposed below the first lower plate body 2. The sixth passage 105 is disposed on the cover plate 9. The sixth passage 105 is a strip-shaped recess disposed on the cover plate 9. After the second connecting block 8 is connected to the cover plate 9, the side of the third through hole 84 closest to the cover plate 9 falls into the strip-shaped recess, allowing gas to enter the strip-shaped recess from the third through hole 84. A fourth guide structure 85 is disposed on the second connecting block 8. A fifth guide structure 91 is also disposed on the fourth cover plate 9. A sixth guide structure 213 is disposed on the first lower plate body 2. The fourth guide structure 85 cooperates with the fifth guide structure 91 and the sixth guide structure 213 to direct the gas in the sixth passage 105 into the welding space 18. It should be noted that the fourth flow-guiding structure 85 is similar in structure to the first flow-guiding structure 161 , and the fifth flow-guiding structure 91 is disposed above the strip-shaped indentation. The fifth flow-guiding structure 91 is similar in structure to the second flow-guiding structure 171 , and the sixth flow-guiding structure 213 is similar in structure to the third flow-guiding structure 51 , which will not be described here. The provision of the sixth flow-guiding structure 213 enables gas guidance and transport without increasing the thickness of the first lower plate 2 .

[0057] It should be noted that the fifth channel and the sixth channel 105 are arranged on the same side, and the fourth channel is arranged on the other side, so that the shielding gas can enter the welding space 18 from both sides respectively, and the shielding effect is better.

[0058] like Figure 2 As shown, in order to facilitate workers to observe the welding situation, an observation window 10 is further provided above the first connecting plate 16 .

[0059] The present application has been described in detail above. Specific examples have been used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is intended only to facilitate understanding of the present application and its core concepts. It should be noted that, without departing from the principles of the present application, a number of improvements and modifications may be made to the present application by a person skilled in the art, and such improvements and modifications shall fall within the scope of protection of the claims of the present application.

Claims

1. A welding device for special gas pipelines, characterized in that: The invention comprises a clamping mechanism and a welding mechanism, wherein the clamping mechanism is used to clamp a pipeline, the welding mechanism comprises a welding space (18) and a welding head (15), the welding head (15) is arranged in the welding space (18), and the welding head (15) is used to weld the pipeline, the clamping mechanism comprises a clamping port, the clamping port is close to the welding space (18), the clamping mechanism is connected to a water cooling system and a gas protection system, the gas protection system is used to provide protective gas, the water cooling system comprises a heat conducting plate (14) and a water circulation pipeline, the heat conducting plate (14) is at least partially arranged at the position of the welding space (18), the heat conducting plate (14) is used to conduct heat generated during welding, the water circulation pipeline is connected to the heat conducting plate (14), and the water circulation pipeline is used to cool the heat conducting plate (14).

2. The welding equipment for special gas pipelines according to claim 1, characterized in that: The water circulation pipeline is at least partially arranged in the middle and lower part of the heat conducting plate (14); the clamping mechanism includes a first clamp and a second clamp, the welding space (18) is arranged between the first clamp and the second clamp, the first clamp is used to clamp the first pipe, the second clamp is used to clamp the second pipe, the first clamp and the second clamp are connected by a first connecting piece, and the heat conducting plate (14) is arranged between the first clamp and the second clamp.

3. The welding equipment for special gas pipelines according to claim 2, characterized in that: The clamping opening comprises a first clamping opening (3), the first clamp comprises a first upper plate body (1) and a first lower plate body (2), the first upper plate body (1) is provided with a first concave, the first lower plate body (2) is provided with a second concave, after the first upper plate body (1) and the first lower plate body (2) are connected, the first clamping opening (3) is formed by enclosing the first concave and the second concave, and the first pipe is clamped in the first clamping opening (3).

4. The welding equipment for special gas pipelines according to claim 3, characterized in that: At least two first protrusions (111) are provided on the first concave, at least one first hollow structure (112) is provided on the first upper plate (1), and the first hollow structure (112) is connected to the first concave; at least two second protrusions (211) are provided on the second concave, at least one second hollow structure (212) is provided on the first lower plate (2), and the second hollow structure (212) is connected to the second concave.

5. The welding equipment for special gas pipelines according to claim 2, characterized in that: The clamping opening further comprises a second clamping opening (6), the second clamp comprises a second upper plate body (4) and a second lower plate body (5), the second upper plate body (4) is provided with a third inner recess, the second lower plate body (5) is provided with a fourth inner recess, after the second upper plate body (4) and the second lower plate body (5) are connected, the second clamping opening (6) is formed by enclosing the third inner recess and the fourth inner recess, and the second pipe is clamped in the second clamping opening (6).

6. The welding equipment for special gas pipelines according to claim 5, characterized in that: At least two third protrusions (41) are provided on the third concave, at least one third hollow structure (42) is provided on the second upper plate (4), and the third hollow structure (42) is connected to the third concave; at least two fourth protrusions (52) are provided on the fourth concave, at least one fourth hollow structure (53) is provided on the second lower plate (5), and the fourth hollow structure (53) is connected to the fourth concave.

7. The welding equipment for special gas pipelines according to claim 2, characterized in that: The water circulation pipeline comprises a first pipeline (200), a water inlet pipeline (201) and a water outlet pipeline (202); the first pipeline (200) is arranged on the heat conducting plate (14); the water inlet pipeline (201) is used to connect to a water source; the water outlet pipeline (202) is used to drain water; the water inlet pipeline (201) and the water outlet pipeline (202) are arranged below the first pipeline (200), and the first pipeline (200) is communicated with the water inlet pipeline (201) and the water outlet pipeline (202) respectively; the gas protection system comprises a first air inlet pipeline (100) and an air inlet channel; one end of the first air inlet pipeline (100) is connected to the air source; the other end of the first air inlet pipeline (100) is connected to the air inlet channel; the air inlet channel is communicated with the welding space (18); the air source flows from the air inlet channel to the welding space (18).

8. The welding equipment for special gas pipelines according to claim 7, characterized in that: The invention also includes a shell, wherein the shell includes a first shell (11) and a second shell (12), wherein the first shell (11) and the first clamp are arranged on the same side, and the first shell (11) is arranged below the first clamp, and the second shell (12) and the second clamp are arranged on the same side, and the second shell (12) is arranged below the second clamp, and the first shell (11) and the second clamp are covered to form an accommodating cavity, and the water inlet pipe (201) and the water outlet pipe (202) are at least partially arranged in the accommodating cavity; and the first air inlet pipe (100) is at least partially arranged in the accommodating cavity.

9. The welding equipment for special gas pipelines according to claim 8, characterized in that: A first connecting block (7) is provided between the housing and the clamping mechanism. The first connecting block (7) is at least partially located in the accommodating cavity. The water inlet pipe (201) and the water outlet pipe (202) respectively pass through the first connecting block (7).

10. The welding equipment for special gas pipelines according to claim 9, characterized in that: The first air intake pipeline (100) is arranged on the first connecting block (7), the air intake channel comprises a first channel (101), the first channel (101) is arranged on the first connecting block (7), and the first air intake pipeline (100) is in communication with the first channel (101).

11. The welding equipment for special gas pipelines according to claim 10, characterized in that: The air intake channel further comprises at least one second channel (102), a second connecting block (8) is provided between the first connecting block (7) and the first clamp, the second channel (102) is provided on the second connecting block (8), and the second channel (102) is communicated with the first channel (101); the second connecting block (8) is provided with at least one third channel (103), the third channel (103) passes through the second connecting block (8), the number of the third channels (103) is the same as that of the second channels (102), and the third channels (103) are communicated with the second channel (102).

12. The welding equipment for special gas pipelines according to claim 11, characterized in that: The second connecting block (8) is provided with a first accommodating groove (81) and two second accommodating grooves (82), wherein the first accommodating groove (81) is used to accommodate the first pipeline (200), and the two second accommodating grooves (82) are used to accommodate the water inlet pipeline (201) and the water outlet pipeline (202), respectively.

13. The welding equipment for special gas pipelines according to claim 11, characterized in that: The second connecting block (8) is connected to a connecting plate assembly. The air intake channel further comprises at least one fourth channel (104). The fourth channel (104) is arranged on the connecting plate assembly and is in communication with the third channel (103).

14. The welding equipment for special gas pipelines according to claim 13, characterized in that: The connecting plate assembly comprises a first connecting plate (16) and a second connecting plate (17), wherein the first connecting plate (16) is arranged between the first clamp and the second clamp, the first connecting plate (16) is connected to the second connecting block (8), and the second connecting plate (17) is arranged between the second clamp and the first connecting block (7). After the first connecting plate (16) and the second connecting plate (17) are connected, a first air inlet groove (1041) and a second air inlet groove (1042) are formed. The fourth channel (104) comprises the first air inlet groove (1041), the second air inlet groove (1042) and a first through hole (1043) passing through the first connecting plate (16), the first through hole (1043) is connected to the third channel (103), and the protective gas enters the first through hole (1043) from the third channel (103), and then enters the first air inlet groove (1041) and the second air inlet groove (1042) in sequence from the first through hole (1043).

15. The welding equipment for special gas pipelines according to claim 14, characterized in that: A notch is provided on the side of the first air inlet groove (1041), and the first air inlet groove (1041) and the second air inlet groove (1042) are connected through the notch. A first flow guide structure (161) is provided on the first connecting plate (16), a second flow guide structure (171) is provided on the second connecting plate (17), and a third flow guide structure (51) is provided on the second lower plate body (5). The first flow guide structure (161) cooperates with the second flow guide structure (171) and the third flow guide structure (51) to guide the gas in the second air inlet groove (1042) into the welding space (18).

16. The welding equipment for special gas pipelines according to claim 15, characterized in that: The air inlet channel also includes a fifth channel, which includes a second through hole (162) passing through the first connecting plate (16) and a third through hole (84) passing through the second connecting block (8); the protective gas enters the first through hole (1043) from the third channel (103), and then enters the first air inlet groove (1041) from the first through hole (1043); part of the protective gas in the first air inlet groove (1041) enters the second air inlet groove (1042), and part of the protective gas enters the fifth channel.

17. The welding equipment for special gas pipelines according to claim 16, characterized in that: The air inlet channel also includes a sixth channel (105), which is connected to the fifth channel. The second connecting block (8) is connected to a cover plate (9), which is arranged below the first lower plate (2). The sixth channel (105) is arranged on the cover plate (9). The second connecting block (8) is provided with a fourth guide structure (85), and the fourth cover plate (9) is also provided with a fifth guide structure (91). The first lower plate (2) is provided with a sixth guide structure (213). The fourth guide structure (85) cooperates with the fifth guide structure (91) and the sixth guide structure (213) to guide the gas in the sixth channel (105) into the welding space (18).

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