Electric arc welding device for hydrogen conveying pipeline for outdoor construction

Abstract

The invention relates to the technical field of pipeline welding devices, in particular to a hydrogen conveying pipeline electric arc welding device for outdoor construction, which comprises a positioning assembly used for being connected with a pipeline and a welding assembly used for welding operation, and the welding assembly is connected with the positioning assembly through a supporting assembly and a connecting piece; the positioning assembly is fixed on the pipeline on one side; the welding assembly installed on the positioning assembly is right opposite to the welding part. The welding assembly moves by a circle on the positioning assembly through the connecting piece, and welding operation is conducted on a welding part at the pipeline connecting position in the moving process; the pipeline welding device is compatible with pipelines of different sizes for welding, the stability is better compared with manual welding, and the welding quality and the welding efficiency are effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline welding devices, in particular to an arc welding device for a hydrogen delivery pipeline used for outdoor construction. Background Art

[0002] Hydrogen is an important way to utilize hydrogen energy. General hydrogen transportation is inseparable from pipeline transportation. Traditional hydrogen pipelines are generally arranged outdoors, and the connection between each section of the pipeline mainly relies on outdoor welding at the construction site. The conventional method is manual welding by welders. However, the process parameters of hydrogen pipelines have high requirements on welding methods. Therefore, how to ensure welding quality while improving welding efficiency has become a technical problem that needs to be solved urgently. Summary of the invention

[0003] The object of the present invention is to provide an arc welding device for a hydrogen delivery pipeline for outdoor construction, so as to solve at least one technical problem existing in the above-mentioned prior art.

[0004] To achieve the above object, the present invention provides the following technical solutions: an arc welding device for a hydrogen delivery pipeline for outdoor construction, comprising a positioning assembly for connecting with the pipeline and a welding assembly for welding operation, wherein the welding assembly is connected to the positioning assembly through a supporting assembly and a connecting piece;

[0005] The positioning assembly is fixed on the pipe on one side; the welding assembly installed on the positioning assembly faces the welding part;

[0006] The welding assembly moves one circle in the positioning assembly through the connecting piece, and welding operations are performed on the welding part of the pipeline connection during the movement.

[0007] Preferably, the positioning assembly includes a first snap ring and a second snap ring;

[0008] The first clamp ring and the second clamp ring are both open rings, and a locking piece is set at the opening part; the distance between the first clamp ring and the second clamp ring is adjusted to match the width of the connecting piece, so as to facilitate installation with the connecting piece; after adjusting in place, the locking piece is used to lock and fix the positioning assembly to the pipeline.

[0009] Preferably, a first guide groove is provided on one side of the first clamping ring and the second clamping ring opposite to each other; and a positioning ball is provided on the connecting member and is installed in cooperation with the first guide groove;

[0010] The second clamping ring is arranged on a side close to the welding portion;

[0011] The second clamping ring is provided with a second guide groove which is recessed downwards along the outer peripheral surface; the second guide groove is used for matching and installing with the supporting assembly.

[0012] Preferably, the connecting member comprises a base, a positioning portion and a flexible connecting portion;

[0013] The flexible connection parts are symmetrically arranged at the left and right ends of the base for connecting with the positioning parts on both sides; the flexible connection parts can be bent to different arcs so that the connection parts can be applied to positioning components of different diameters.

[0014] Preferably, the connecting piece further comprises a positioning ball and a magnetic attraction portion;

[0015] The positioning balls are arranged in pairs on the positioning parts on both sides, and the positioning balls are fitted into the first guide grooves for connection with the positioning assembly;

[0016] A magnetic attraction portion is provided on the side of the base;

[0017] The magnetic attraction part has a magnet inside and a rubber outer layer outside; one end of the magnetic attraction part is inserted into the base, and a limit piece is provided on the end inserted into the base, so that the magnetic attraction part can move a certain distance outward under the action of magnetic force, and is restricted by the limit piece and will not completely fall out of the base; the magnetic attraction part maintains magnetic attraction with the first guide groove on the first clamping ring, and when the magnetic attraction part extends to the first guide groove, a damping buffer structure is formed.

[0018] Preferably, the magnetic attraction portion is a disc-shaped structure, and the diameter of the magnetic attraction portion is the same as the diameter of the positioning ball;

[0019] The horizontal installation height of the magnetic attraction part is higher than the horizontal installation height of the positioning ball.

[0020] Preferably, the support assembly includes a support plate, a column, a support column and a support leg;

[0021] The support column is vertically arranged in the middle part of the connecting piece; two groups of support legs are arranged, and spherical contact pieces are arranged at the bottom of the support legs; the support column and the two groups of support legs are combined to form a triangular support structure; the spherical contact piece at the bottom of the support leg is used to cooperate with the second guide groove for connection; the support leg is a spiral height-adjustable support structure;

[0022] The support plate is built on the top of a triangular support structure formed by a support column and two groups of support legs; a column is arranged in the middle of the support plate, so that two separated installation areas are formed above the support plate.

[0023] Preferably, the support assembly also includes a mounting plate and a handle; the mounting plate is arranged at the front of the support plate to separate the welding area from the mounting area; a controller is arranged in the mounting area on one side, and a handle is installed in the mounting area on the other side.

[0024] Preferably, the welding assembly includes a control terminal connected to the controller signal and a welding gun; a bellows is reserved on the top of the welding gun, and the wire feeding tube and the cable for powering the welding gun are wrapped by the bellows;

[0025] An outwardly extending support arm is provided on the column, and the support arm is fixed to the movable bracket on the welding assembly through a pin shaft; the support arm is inserted into the movable bracket, and a certain space is left between the support arm and the movable bracket; the pin shaft is used to fix the support arm and the movable bracket;

[0026] When the pin is tightened, the support arm and the movable bracket remain fixed;

[0027] If the pin is loosened, the support arm and the movable bracket will shake relative to each other;

[0028] The top of the column is provided with an adjustment knob for controlling the vertical height of the support arm. Turning the adjustment knob clockwise will cause the support arm to move upward, and turning the adjustment knob counterclockwise will cause the support arm to move downward.

[0029] A telescopic component is arranged on the mounting plate, and the telescopic component is a linear motor or a hydraulic cylinder; the output end of the telescopic component is connected to the movable bracket;

[0030] The reciprocating motion of the telescopic assembly controls the movable bracket to drive the entire welding assembly to rotate relative to the pin shaft.

[0031] Preferably, a protection assembly is provided along one side of the support assembly;

[0032] The protective assembly includes a first baffle and a second baffle; the second baffle is longer than the first baffle, so that after the supporting assembly is installed, the protective assembly surrounds the welding assembly into a semi-enclosed welding area, and a window is set on the first baffle for convenient observation of the welding condition.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The present invention forms a complete welding device by assembling connectors, supporting components, welding components and protective components on the basis of positioning components by setting positioning components; when performing welding operations, the position of the welding gun is adjusted so that it faces the welding part, and the moving speed of the welding device is manually controlled to complete the welding operation quickly and stably; the present invention is suitable for welding pipelines of different sizes and effectively improves welding quality and welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of a welding assembly and a pipeline welding operation in an embodiment of the present invention;

[0036] Figure 2 Schematic diagram of the assembly structure of the welding assembly in an embodiment of the present invention;

[0037] Figure 3 It is a schematic diagram of the assembly structure of the connecting member and the supporting assembly in an embodiment of the present invention;

[0038] Figure 4Schematic diagram of the installation structure of the welding assembly in an embodiment of the present invention;

[0039] Figure 5 Schematic diagram of the bottom structure of the support assembly in an embodiment of the present invention;

[0040] Figure 6 It is a structural schematic diagram of a positioning component in an embodiment of the present invention;

[0041] Figure 7 It is a partial enlarged structural schematic diagram of the positioning component in an embodiment of the present invention;

[0042] Figure 8 It is a schematic diagram of the structure of the protection component in an embodiment of the present invention;

[0043] Fig. 9 Schematic diagram of the structure of the connecting member in an embodiment of the present invention.

[0044] In the figure: 1. pipeline; 11. welding part; 2. protection assembly; 21. first baffle; 22. window; 23. second baffle; 3. welding assembly; 31. adjustment knob; 32. bellows; 33. control end; 34. welding gun; 35. movable bracket; 36. telescopic assembly; 37. pin; 38. controller; 4. positioning assembly; 41. first clamping ring; 42. second clamping ring; 421. second guide groove; 43. locking member; 44. first guide groove; 5. support assembly; 51. support plate; 52. column; 53. mounting plate; 54. handle; 55. support column; 56. support leg; 57. spherical contact member; 6. connecting member; 61. base; 62. positioning part; 63. positioning ball; 64. flexible connecting part; 65. magnetic part. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0046] Example 1

[0047] This embodiment provides an arc welding device for hydrogen delivery pipeline for outdoor construction, such as Figure 1The figure shows a positioning assembly 4 for connecting with a pipeline 1 and a welding assembly 3 for welding operations, wherein the welding assembly 3 is connected to the positioning assembly 4 via a supporting assembly 5 and a connecting piece 6; the positioning assembly 4 is fixed on the pipeline 1 on one side; the welding assembly 3 installed on the positioning assembly 4 is facing the welding portion 11; the welding assembly 3 moves one circle on the positioning assembly 4 via the connecting piece 6, and welding operations are performed on the welding portion 11 at the connection of the pipeline 1 during the movement.

[0048] In this embodiment, after the pipe 1 to be welded is docked, the positioning assembly 4 is fixed on the pipe 1 to be welded, and the distance is adjusted and locked using the locking member 43; then the connecting member 6, the supporting assembly 5 and the welding assembly 3 are installed in sequence; in an optional embodiment, a laser positioning device can be provided on the welding assembly 3; before the formal welding operation, the welding assembly 3 is manually pushed by holding the handle 54 to slide along the positioning assembly 4 for one circle, and whether the position is accurately installed is determined by observing whether the laser positioning device coincides with the welding portion 11 to be docked. If there is a deviation in the position installation, the position is readjusted until the welding gun 34 is facing the welding portion 11; then the welding operation can be started.

[0049] Example 2

[0050] like Figure 6-7 As shown, this embodiment provides an arc welding device for hydrogen delivery pipeline for outdoor construction. Different from the embodiment 1, in this embodiment, the positioning assembly 4 includes a first clamp ring 41 and a second clamp ring 42;

[0051] The first clamp ring 41 and the second clamp ring 42 are both open rings, and a locking member 43 is provided at the opening part thereof; the spacing between the first clamp ring 41 and the second clamp ring 42 is adjusted to match the width of the connector 6, so as to facilitate installation with the connector 6; after adjustment, the locking member 43 is used to lock and fix the positioning assembly 4 to the pipe 1, and the first guide groove 44 is provided on the opposite side of the first clamp ring 41 and the second clamp ring 42; the connector 6 is provided with a positioning ball 63 installed in cooperation with the first guide groove 44; the second clamp ring 42 is provided on the side close to the welding part 11; the second clamp ring 42 is provided with a second guide groove 421 concave downwardly along the outer peripheral surface; the second guide groove 421 is used for installation in cooperation with the support assembly 5. The connector 6 includes a base 61, a positioning part 62 and a flexible connecting part 64; the flexible connecting part 64 is symmetrically arranged at the left and right ends of the base 61 for connecting with the positioning parts 62 on both sides; the flexible connecting part 64 can be bent to different arcs so that the connector 6 can be applied to positioning assemblies 4 of different diameters.

[0052] like Fig. 9As shown, the connecting member 6 also includes a positioning ball 63 and a magnetic attraction portion 65; the positioning balls 63 are arranged in pairs on the positioning portions 62 on both sides, and the positioning balls 63 are fitted into the first guide groove 44 for connection with the positioning assembly 4; a magnetic attraction portion 65 is arranged on the side of the base 61; the magnetic attraction portion 65 has a magnet inside and is wrapped with a rubber outer layer on the outside; one end of the magnetic attraction portion 65 is inserted into the base 61, and a limit piece is arranged on the end inserted into the base 61, so that the magnetic attraction portion 65 can move a certain distance outward under the action of magnetic force, and is constrained by the limit piece, so that it will not completely fall out of the base 61; the magnetic attraction portion 65 maintains magnetic attraction with the first guide groove 44 on the first retaining ring 41, and when the magnetic attraction portion 65 extends to the first guide groove 44, a damping buffer structure is formed; the magnetic attraction portion 65 is a disc-shaped structure, and the diameter of the magnetic attraction portion 65 is the same as the diameter of the positioning ball 63; the horizontal installation height of the magnetic attraction portion 65 is higher than the horizontal installation height of the positioning ball 63.

[0053] In this embodiment, only positioning components 4 of corresponding sizes need to be set for different diameters of the pipeline 1; the positioning component 4 is locked with the locking member 43 and then connected to the outer wall of the pipeline 1; at this time, the flexible connection part 64 of the connecting member 6 is adjusted to make the entire connecting member 6 bend at a certain angle to ensure that the positioning ball 63 is fitted and inserted into the first guide groove 44 for connection with the positioning component 4, and then other equipment can be installed in sequence, which is convenient for welding pipelines of different sizes.

[0054] In this embodiment, since the first retaining ring 41 is an iron metal part, when the connecting part 6 and the positioning component 4 are installed, the magnetic attraction part 65 will be attracted and adsorbed in the first guide groove 44. Since the magnetic attraction part 65 has a magnet inside and is wrapped with a rubber outer layer outside, when the magnetic attraction part 65 extends to the first guide groove 44, a damping buffer structure is formed; when the welding component 3 is manually pushed to move along the positioning component 4, the stability is better.

[0055] Example 3

[0056] like Figure 2-5 As shown, this embodiment provides an arc welding device for hydrogen delivery pipeline for outdoor construction. Different from the embodiment 1, in this embodiment, the support assembly 5 includes a support plate 51, a column 52, a support column 55 and a support leg 56;

[0057] The support column 55 is vertically arranged in the middle part of the connecting member 6; two groups of support legs 56 are arranged, and a spherical contact member 57 is arranged at the bottom of the support leg 56; the support column 55 and the two groups of support legs 56 are combined to form a triangular support structure; the spherical contact member 57 at the bottom of the support leg 56 is used to cooperate with the second guide groove 421; the support leg 56 is a spiral height-adjustable support structure;

[0058] The support plate 51 is built on the top of a triangular support structure formed by a support column 55 and two sets of support legs 56 ; a column 52 is arranged in the middle of the support plate 51 , so that two separated installation areas are formed above the support plate 51 .

[0059] The support assembly 5 also includes a mounting plate 53 and a handle 54; the mounting plate 53 is arranged at the front of the support plate 51, separating the welding area from the mounting area; the mounting area on one side is provided with a controller 38, and the mounting area on the other side is used to install the handle 54. The welding assembly 3 includes a control terminal 33 connected to the controller 38 for signal connection and a welding gun 34; a bellows 32 is reserved at the top of the welding gun 34, and the wire feeding tube and the cable for powering the welding gun 34 are wrapped by the bellows 32;

[0060] The column 52 is provided with an outwardly extending support arm, which is fixed to the movable bracket 35 on the welding assembly 3 by a pin 37; the support arm is inserted into the movable bracket 35, and a certain space is left between the support arm and the movable bracket 35; the pin 37 is used to fix the support arm and the movable bracket 35;

[0061] When the pin 37 is tightened, the support arm and the movable bracket 35 remain fixed;

[0062] When the pin 37 is loosened, the support arm and the movable bracket 35 will shake relative to each other;

[0063] The top of the column 52 is provided with an adjustment knob 31 for controlling the vertical height of the support arm. When the adjustment knob 31 is turned clockwise, the support arm moves upward, and when the adjustment knob 31 is turned counterclockwise, the support arm moves downward.

[0064] The mounting plate 53 is provided with a telescopic assembly 36, which is a linear motor or a hydraulic cylinder; the output end of the telescopic assembly 36 is connected to the movable bracket 35; the reciprocating motion of the telescopic assembly 36 controls the movable bracket 35 to drive the entire welding assembly 3 to rotate relative to the pin shaft.

[0065] In this embodiment, the horizontal height of the entire support arm can be adjusted by adjusting the knob 31 according to the position of the welding part 11 so that the head of the welding gun 34 is close to the welding part 11, and then the welding gun mode is manually selected as direct welding or swing welding according to the size of the weld of the welding part 11;

[0066] When direct welding is selected, the pin shaft 37 is locked, and the support arm and the movable bracket 35 remain fixed; at this time, the welding parameters are set through the controller 38, and the handle 54 is manually held to steadily push the welding assembly 3 to move it along the positioning assembly 4, and the welding gun 34 can weld the welding part 11 until the welding operation is completed.

[0067] When swing welding is selected, the pin shaft 37 is loosened, and the support arm and the movable bracket 35 swing relative to each other; at this time, the welding parameters are set through the controller 38, the telescopic component 36 is started, and the movable bracket 35 is controlled to rotate relative to the pin shaft 37; at this time, the handle 54 is manually held to steadily push the welding component 3 to move it along the positioning component 4, and the welding gun 34 forms a Z-shaped motion trajectory at the welding part 11, and the welding part 11 is welded until the welding operation is completed.

[0068] Example 4

[0069] like Figure 8 As shown, this embodiment provides an arc welding device for hydrogen delivery pipeline for outdoor construction. Different from the embodiment 1, in this embodiment, a protection component 2 is arranged along one side of the support component 5;

[0070] The protective assembly 2 includes a first baffle 21 and a second baffle 23; the second baffle 23 is longer than the first baffle 21, so that after the supporting assembly 5 is installed, the protective assembly 2 surrounds the welding assembly 3 into a semi-enclosed welding area, and a window 22 is provided on the first baffle 21 for convenient observation of the welding condition.

[0071] like Figure 1 The protective assembly 2 shown can form a semi-enclosed enclosure structure at the welding site, which can protect the construction workers during the welding process, and is also beneficial to the influence of wind speed on welding in outdoor environments; finally, the window 22 on the first baffle 21 can facilitate the construction workers to observe the welding status and control the stable operation of the welding operation according to the status.

[0072] The present invention first selects a matching positioning assembly 4 according to the diameter of the pipe 1, installs it on one side of the pipe 1, and locks it with a locking member 43; then installs the connecting member 6, the supporting assembly 5, the protective assembly 2 and the welding assembly 3 in sequence; before the formal welding operation, hold the handle 54 and manually push the welding assembly 3 to slide along the positioning assembly 4 for one circle, and judge whether the position is installed accurately by observing whether the laser positioning device overlaps with the welding part 11 to be connected. If there is a deviation in the position installation, readjust the position until the welding gun 34 is facing the welding part 11; then the welding operation can be started;

[0073] Select different welding methods according to the width of the weld; when direct welding is selected, lock the pin shaft 37, and the support arm and the movable bracket 35 remain fixed; when swing welding is selected, loosen the pin shaft 37, and the support arm and the movable bracket 35 swing relative to each other; then set the welding parameters through the controller 38, manually hold the handle 54 to push the entire welding assembly 3 so that it moves along the positioning assembly 4 through the connecting piece 6, and the magnetic attraction portion 65 wrapped with a rubber outer layer provided on the connecting piece 6 is connected with the first guide groove 44 on the first clamping ring 41 to form a damping buffer structure, so that the welding assembly 3 moves more smoothly and at a more uniform speed; it is conducive to the progress of the welding operation; the window 22 reserved on one side of the protective assembly 2 can facilitate the observation of the entire welding process, and the staff can adjust the speed in time according to the progress until the welding operation is completed.

[0074] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0075] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An arc welding device for hydrogen delivery pipeline for outdoor construction, comprising a positioning assembly (4) for connecting with a pipeline (1) and a welding assembly (3) for welding operation, characterized in that: The welding assembly (3) is connected to the positioning assembly (4) via a supporting assembly (5) and a connecting piece (6); The positioning assembly (4) is fixed on the pipe (1) at one side; the welding assembly (3) installed on the positioning assembly (4) faces the welding portion (11); The welding assembly (3) moves one circle on the positioning assembly (4) via the connecting piece (6), and during the movement, a welding operation is performed on the welding portion (11) at the connection of the pipeline (1).

2. The arc welding device for hydrogen delivery pipeline for outdoor construction according to claim 1 is characterized in that: The positioning assembly (4) comprises a first snap ring (41) and a second snap ring (42); The first clamping ring (41) and the second clamping ring (42) are both open rings, and locking pieces are provided at their open parts; the spacing between the first clamping ring (41) and the second clamping ring (42) is adjusted to match the width of the connecting piece (6) to facilitate installation with the connecting piece (6); after adjustment is in place, the locking piece (43) is used to lock and fix the positioning assembly (4) and the pipeline (1) tightly.

3. The arc welding device for hydrogen delivery pipeline for outdoor construction according to claim 2 is characterized in that: A first guide groove (44) is provided on one side of the first clamping ring (41) and the second clamping ring (42) opposite to each other; a positioning ball (63) is provided on the connecting member (6) and is mounted in cooperation with the first guide groove (44); The second clamping ring (42) is arranged on a side close to the welding portion (11); The second clamping ring (42) is provided with a second guide groove (421) recessed downwards along the outer peripheral surface; the second guide groove (421) is used for matching installation with the support assembly (5).

4. The arc welding device for hydrogen delivery pipeline for outdoor construction according to claim 1 or 3, characterized in that: The connecting member (6) comprises a base (61), a positioning portion (62) and a flexible connecting portion (64); The flexible connection parts (64) are symmetrically arranged at the left and right ends of the base (61) for connecting with the positioning parts (62) on both sides; the flexible connection parts (64) can be bent to different arcs so that the connecting member (6) can be applied to positioning components (4) of different diameters.

5. The arc welding device for hydrogen delivery pipeline for outdoor construction according to claim 4 is characterized in that: The connecting member (6) further comprises a positioning ball (63) and a magnetic attraction portion (65); The positioning balls (63) are arranged in pairs on the positioning parts (62) on both sides, and the positioning balls (63) are fitted into the first guide grooves (44) for connection with the positioning assembly (4); A magnetic attraction portion (65) is provided on the side of the base (61); The magnetic attraction part (65) has a magnet inside and is wrapped with a rubber outer layer outside; one end of the magnetic attraction part (65) is inserted into the base (61), and a limit piece is provided at the end inserted into the base (61), so that the magnetic attraction part (65) can move outward a certain distance under the action of magnetic force, and is constrained by the limit piece so that it will not completely escape from the base (61); the magnetic attraction part (65) and the first guide groove (44) on the first clamping ring (41) maintain magnetic attraction, and when the magnetic attraction part (65) extends to the first guide groove (44), a damping buffer structure is formed.

6. The arc welding device for hydrogen delivery pipeline for outdoor construction according to claim 5, characterized in that: The magnetic attraction portion (65) is a disc-shaped structure, and the diameter of the magnetic attraction portion (65) is the same as the diameter of the positioning ball (63); The horizontal installation height of the magnetic attraction portion (65) is higher than the horizontal installation height of the positioning ball (63).

7. The arc welding device for hydrogen delivery pipeline for outdoor construction according to claim 1 is characterized in that: The support assembly (5) comprises a support plate (51), a column (52), a support column (55) and a support leg (56); The support column (55) is vertically arranged at the middle part of the connecting member (6); two groups of support legs (56) are arranged, and a spherical contact member (57) is arranged at the bottom of the support leg (56); the support column (55) and the two groups of support legs (56) are combined to form a triangular support structure; the spherical contact member (57) at the bottom of the support leg (56) is used to cooperate with the second guide groove (421); the support leg (56) is a spiral height-adjustable support structure; The support plate (51) is built on the top of a triangular support structure formed by a support column (55) and two groups of support legs (56); a column (52) is arranged in the middle of the support plate (51), so that two separated installation areas are formed above the support plate (51).

8. The arc welding device for hydrogen delivery pipeline for outdoor construction according to claim 7, characterized in that: The support assembly (5) further comprises a mounting plate (53) and a handle (54); the mounting plate (53) is arranged at the front of the support plate (51) to separate the welding area from the mounting area; the controller (38) is arranged in the mounting area on one side, and the handle (54) is installed in the mounting area on the other side.

9. The arc welding device for hydrogen delivery pipeline for outdoor construction according to claim 8, characterized in that: The welding assembly (3) includes a control terminal (33) connected to a controller (38) by signal and a welding gun (34); a corrugated tube (32) is reserved on the top of the welding gun (34), and a wire feeding tube and a cable for supplying power to the welding gun (34) are all wrapped by the corrugated tube (32); An outwardly extending support arm is provided on the column (52), and the support arm is fixed to the movable bracket (35) on the welding assembly (3) via a pin shaft (37); the support arm is inserted into the movable bracket (35), and a certain space is left between the support arm and the movable bracket (35); the pin shaft (37) is used to fix the support arm and the movable bracket (35); When the pin (37) is tightened, the support arm and the movable bracket (35) remain fixed; When the pin (37) is loosened, the support arm and the movable bracket (35) shake relative to each other; The top of the column (52) is provided with an adjusting knob (31) for controlling the vertical height of the support arm. When the adjusting knob (31) is turned clockwise, the support arm moves upward, and when the adjusting knob is turned counterclockwise, the support arm moves downward. A telescopic assembly (36) is arranged on the mounting plate (53), and the telescopic assembly (36) is a linear motor or a hydraulic cylinder; the output end of the telescopic assembly (36) is connected to the movable bracket (35); The reciprocating motion of the telescopic assembly (36) controls the movable bracket (35) to drive the entire welding assembly (3) to rotate relative to the pin shaft.

10. The arc welding device for hydrogen delivery pipeline for outdoor construction according to claim 1, characterized in that: A protection component (2) is arranged along one side of the support component (5); The protection component (2) comprises a first baffle (21) and a second baffle (23); the second baffle (23) is longer than the first baffle (21), so that after the protection component (2) is installed on the support component (5), the welding component (3) is surrounded to form a semi-enclosed welding area, and a window (22) is provided on the first baffle (21) for conveniently observing the welding condition.

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