Pipeline welding tool
By designing a pipe welding fixture and using a combination of a base plate and clamping blocks, the four flange faces of the special-shaped pipe are made to be on the same plane, which solves the problems of unstable positioning and deformation during welding and achieves high-precision and safe welding results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2026-03-24
AI Technical Summary
When welding specially shaped pipes in MOCVD equipment, it is difficult to ensure the flatness of the four flange faces, resulting in poor sealing performance. In addition, manual welding operation has low precision and poor safety.
Design a pipe welding fixture that, through the combination of a base plate, a fixing block, and a clamping block, ensures that the four flange faces of a specially shaped pipe are on the same plane, thereby ensuring positioning stability and accuracy and reducing welding deformation.
It enables high-precision welding of specially shaped pipes, improves sealing and safety, reduces reliance on operators, and supports standardized operations.
Smart Images
Figure CN224026814U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to pipeline welding frock design technical field relates to a pipeline welding frock especially relates to a welding frock of double -layer stainless steel pipeline. BACKGROUND
[0002] The pipeline of special shape is used for tail gas collection in metal organic chemical vapor deposition equipment (MOCVD equipment), and the material thereof is generally a double -layer structure of 316L stainless steel pipe, the inner layer is a gas path, and the gas after the vapor deposition reaction is discharged, because the tail gas temperature is relatively high, the outer layer is provided as a cooling water path, and the gas is cooled and the gas temperature is reduced during the discharge process. However, it is difficult to ensure the flatness of the four mounting flange surfaces during welding of the pipeline component, the sealing effect cannot be achieved, and the use requirements of the equipment cannot be met.
[0003] In addition, the source used for MOCVD growth is a flammable, explosive and highly toxic substance, and it is required to grow multi-component, large-area, thin-layer and ultrathin-layer heterogeneous materials. The gas after the reaction needs to be discharged in time and collected during the crystal growth process. The special-shaped pipeline structure is used for tail gas cooling and collection of vapor phase epitaxy equipment, and the existing scheme is manual welding during the processing and welding of the pipeline component, which relies on manual guarantee, has low operation precision and low safety, therefore, it is urgent to design and develop a pipeline welding frock to overcome the defects of the prior art and meet the actual application requirements. UTILITY MODEL CONTENT
[0004] In view of the defects in the prior art, the utility model aims at providing a pipeline welding frock, especially a welding frock for complex pipeline. In the utility model, the four flanges of the special-shaped pipeline are all on the same plane of the bottom plate during welding, the stability and accuracy of the positioning of the special-shaped pipeline are ensured, and the low deformation of the special-shaped pipeline during welding is ensured.
[0005] To achieve this purpose, the utility model adopts the following technical scheme:
[0006] The utility model provides a pipeline welding frock, the pipeline welding frock includes a bottom plate, the bottom plate is provided with a fixed block in the middle of one side close to the edge, the bottom plate is provided with a first clamping block, a second clamping block and a third clamping block in sequence on one side of the fixed block, the bottom plate is provided with a fourth clamping block, a fifth clamping block and a sixth clamping block in sequence on the other side of the fixed block, the first clamping block, the second clamping block and the third clamping block and the fourth clamping block, the fifth clamping block and the sixth clamping block are symmetrically arranged in sequence with the fixed block as the center, and the first clamping block, the third clamping block, the fourth clamping block and the sixth clamping block are of the same height.
[0007] In the utility model, through the specific combination setting of the bottom plate, the fixing block and each clamping block, the four flanges during the welding of the special-shaped pipeline are all on the same plane of the bottom plate, the stability and accuracy of the positioning of the special-shaped pipeline are guaranteed, and the low deformation amount of the special-shaped pipeline during the welding is guaranteed.
[0008] It should be noted that generally, the welding of the special-shaped pipeline is performed by manual argon arc welding, the pipeline elbow and the connection are more, the deformation is difficult to control, the flange surface cannot be coplanar, and helium leakage is prone to occur at the sealing part; and the control of the welding method is difficult to grasp, and the deformation amount of different personnel welding operations is different; however, the pipeline welding tool in the utility model is aimed at the clamping of the special-shaped pipeline, guarantees that the four small flange surfaces of the bottom plate connection part are tightly attached on a plane, and the perpendicularity stability of the two rotating flanges on the side surface to the bottom surface is also high, the SOP standardization popularization operation can be realized, the dependence on personnel is reduced, and the process is better controlled.
[0009] It should be noted that the specific material, size and the like of the bottom plate in the utility model are not specially limited, and a person skilled in the art can make adaptive adjustment according to the actual situation. The bottom plate can be a stainless steel plate.
[0010] It should be noted that the specific material of the fixing block and each clamping block in the utility model is not specially limited, and a person skilled in the art can make adaptive adjustment according to the actual situation.
[0011] It should be noted that the specific connection mode of the fixing block and each clamping block to the bottom plate in the utility model is not limited, as long as the fixing block and each clamping block are on the same side of the bottom plate, and a person skilled in the art can make adaptive adjustment according to the actual situation. The connection mode can be bonding, welding or screw connection.
[0012] As a preferred technical scheme of the utility model, the height of the fixing block is 15-25cm, for example, can be 15cm, 16cm, 17cm, 18cm, 19cm, 20cm, 21cm, 22cm, 23cm, 24cm, 25cm and the like, but is not limited to the listed values, and other values not listed in the range are also applicable.
[0013] In the utility model, the height of the fixing block is limited to 15-25cm, because within this range, the fixing block meets the use requirements, and if it is not within this range, it will lead to inaccurate positioning or make the tool too heavy, because the strength is not enough when the thickness is thin, and deformation will occur during use; if it is thicker, it will be cumbersome and inconvenient for on-site handling and the like.
[0014] As a preferred technical scheme of the utility model, the fixed block is provided with a through hole along the direction perpendicular to the first clamping block, the second clamping block and the third clamping block arrangement, and the through hole is used for fixing the pipeline.
[0015] As a preferred technical scheme of the utility model, the diameter of the through hole is 5-8cm, for example, it can be 5cm, 5.3cm, 5.8cm, 6cm, 6.5cm, 6.8cm, 7cm, 7.3cm, 7.5cm, 7.9cm, 8cm and the like, but is not limited to the listed values, and other values not listed in the value range are also applicable.
[0016] It should be noted that the specific shape of the through hole is not specially limited in the utility model, and the structure of the pipeline can be fixed, and the skilled person can make adaptive adjustment according to the actual situation.
[0017] As a preferred technical scheme of the utility model, the height of the first clamping block is 8-10cm, for example, it can be 8cm, 8.2cm, 8.4cm, 8.6cm, 8.8cm, 9cm, 9.2cm, 9.4cm, 9.6cm, 9.8cm, 10cm and the like, but is not limited to the listed values, and other values not listed in the value range are also applicable.
[0018] In the utility model, the height of the first clamping block is limited to 8-10cm, because in this range, the tooling fixing height meets the flange positioning requirements, if it is not in this range, the flange surface cannot be accurately positioned, because the height dimension of the flange surface and the pipeline center axis is affected, in order to ensure that the flange surface can be adjusted and flat with the positioning surface during welding, too high cannot be contacted, and too low will be over positioned.
[0019] As a preferred technical scheme of the utility model, the height of the second clamping block and the fifth clamping block is the same.
[0020] Preferably, the side away from the bottom plate of the second clamping block is provided with an open clamping groove.
[0021] Preferably, the side away from the bottom plate of the fifth clamping block is provided with an open clamping groove.
[0022] Preferably, the open clamping groove is a U-shaped groove, and the U-shaped groove is used for fixing the pipeline.
[0023] As a preferred technical scheme of the utility model, the height of the second clamping block is 4-6cm, for example, it can be 4cm, 4.2cm, 4.4cm, 4.6cm, 4.8cm, 5cm, 5.2cm, 5.4cm, 5.6cm, 5.8cm, 6cm, etc., but is not limited to the listed values, and other values not listed in the value range are also applicable.
[0024] In the utility model, the height of the second clamping block is limited to 4-6cm, because in this range, the tooling fixed height meets the flange positioning requirements, if not in this range, the flange face cannot be accurately positioned, because the flange face cannot be accurately positioned, because the height dimension of the flange face and the pipeline center axis is affected, in order to ensure that the flange face can be adjusted and pasted flat with the positioning surface during welding, too high cannot be contacted, and too low will be over positioned.
[0025] Preferably, the depth of the U-shaped groove is 3-5cm, for example, it can be 3cm, 3.2cm, 3.4cm, 3.6cm, 3.8cm, 4cm, 4.2cm, 4.4cm, 4.6cm, 4.8cm, 5cm, etc., but is not limited to the listed values, and other values not listed in the value range are also applicable.
[0026] In the utility model, the depth of the U-shaped groove is limited to 3-5cm, because in this range, the height of the tee pipe is convenient to adjust during welding, if not in this range, the positioning effect will be lost during welding, because too high or too low will make the height of the tee pipe and the pipeline at both ends not match, manual adjustment is needed during welding, a single person cannot operate, and the welding gap is not the same on both sides, affecting the welding effect.
[0027] As a preferred technical scheme of the utility model, the first clamping block, the second clamping block and the third clamping block are arranged in a triangular shape.
[0028] Preferably, the first clamping block and the third clamping block are flush, and one side edge of the second clamping block is arranged close to the fixed block.
[0029] Preferably, first through grooves are formed in the first clamping block and the third clamping block, and the first through grooves are used for fixing the pipeline.
[0030] It should be noted that the first clamping block, the second clamping block and the third clamping block are arranged in a triangular shape in the utility model, which can cooperate with the gravity support and strength fixation of the special-shaped pipeline, and can be more convenient to carry and reduce the vibration and deformation generated during processing.
[0031] As a preferred technical scheme of the utility model, the fourth clamping block, the fifth clamping block and the sixth clamping block are arranged in a triangular shape.
[0032] Preferably, the fourth clamping block and the sixth clamping block are flush, and one side edge of the fifth clamping block is arranged close to the fixed block.
[0033] Preferably, the fourth clamping block and the sixth clamping block are flush, and one side edge of the fifth clamping block is arranged close to the fixed block.
[0034] It should be noted that the first clamping block, the second clamping block and the third clamping block are triangularly arranged in the utility model, which can support and fix the gravity center of the special-shaped pipeline, and can be more convenient to carry and reduce vibration and deformation during processing.
[0035] As a preferred technical solution of the utility model, the diameter of the first through slot is 5-7cm, for example, it can be 5cm, 5.2cm, 5.4cm, 5.6cm, 5.8cm, 6cm, 6.2cm, 6.4cm, 6.6cm, 6.8cm, 7cm, etc., but it is not limited to the listed values, and other values not listed in the value range are also applicable.
[0036] Preferably, the diameter of the second through slot is 5-7cm, for example, it can be 5cm, 5.2cm, 5.4cm, 5.6cm, 5.8cm, 6cm, 6.2cm, 6.4cm, 6.6cm, 6.8cm, 7cm, etc., but it is not limited to the listed values, and other values not listed in the value range are also applicable.
[0037] It should be noted that the specific shape of the first through slot and the second through slot is not specially limited in the utility model, and the structure of the pipeline can be fixed, and the skilled person can make adaptive adjustment according to the actual situation.
[0038] Compared with the prior art, the utility model has the beneficial effects that:
[0039] In the utility model, through the specific combination of the bottom plate, the fixed block and the clamping blocks, the four flanges of the special-shaped pipeline during welding are all on the same plane of the bottom plate, the stability and accuracy of the positioning of the special-shaped pipeline are ensured, and the low deformation amount of the special-shaped pipeline during welding is ensured. BRIEF DESCRIPTION OF DRAWINGS
[0040] Figure 1 The assembly drawing of the pipeline welding tool provided for one specific embodiment of the utility model;
[0041] Among them, 1 is a bottom plate; 2 is a fixed block; 3 is a first clamping block; 4 is a second clamping block; 5 is a third clamping block; 6 is a fourth clamping block; 7 is a fifth clamping block; 8 is a sixth clamping block. DETAILED DESCRIPTION
[0042] It should be understood that in the description of this utility model, the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0043] It should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0044] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0045] In one specific embodiment, the present invention provides a pipe welding fixture, such as... Figure 1 As shown, the pipeline welding fixture includes a base plate 1. A fixing block 2 is provided in the middle of one side of the base plate 1 near the edge. A first locking block 3, a second locking block 4, and a third locking block 5 are arranged sequentially on one side of the base plate 1 near the fixing block 2. A fourth locking block 6, a fifth locking block 7, and a sixth locking block 8 are arranged sequentially on the other side of the base plate 1 near the fixing block 2. The first locking block 3, the second locking block 4, and the third locking block 5 are arranged symmetrically with the fourth locking block 6, the fifth locking block 7, and the sixth locking block 8 around the fixing block 2. The first locking block 3, the third locking block 5, the fourth locking block 6, and the sixth locking block 8 have the same height.
[0046] In this utility model, by specifically combining and setting the base plate 1, the fixing block 2 and each clamping block, the four flanges of the special-shaped pipeline are all on the same plane of the base plate 1 during welding, which ensures the stability and accuracy of the positioning of the special-shaped pipeline and ensures low deformation of the special-shaped pipeline during welding.
[0047] It should be noted that generally, the welding of special-shaped pipelines relies on manual argon arc welding, there are more pipeline bends and connections, deformation is difficult to control, flange surfaces cannot be coplanar, and helium leakage is prone to occur at the sealing part; and the control of the welding method is difficult to grasp, and the deformation amount of different personnel welding operations is different; however, the pipeline welding tool in the utility model is aimed at the clamping of special-shaped pipelines, ensures that the four small flange surfaces of the bottom plate 1 connection are tightly fitted on a plane, and the perpendicularity stability of the two rotating flanges on the side surface to the bottom surface is also high, so that the SOP standardized promotion operation can be realized, the dependence on personnel is reduced, and the process is better controlled.
[0048] It should be noted that the specific material, size, etc. of the bottom plate 1 in the utility model are not specially limited, and a person skilled in the art can make adaptive adjustments according to the actual situation. The bottom plate 1 can be made of stainless steel plate.
[0049] It should be noted that the specific material of the fixing block 2 and each clamping block in the utility model is not specially limited, and a person skilled in the art can make adaptive adjustments according to the actual situation.
[0050] It should be noted that the specific connection mode of the fixing block 2 and each clamping block to the bottom plate 1 in the utility model is not limited, as long as the fixing block 2 and each clamping block are on the same side of the bottom plate 1, and a person skilled in the art can make adaptive adjustments according to the actual situation. The connection mode can be bonding, welding or screw connection, etc.
[0051] Further, the height of the fixing block 2 is 15-25 cm, for example, it can be 15 cm, 16 cm, 17 cm, 18 cm, 19 cm, 20 cm, 21 cm, 22 cm, 23 cm, 24 cm, 25 cm, etc., but it is not limited to the listed values, and other values not listed in this range are also applicable.
[0052] Further, the fixing block 2 is provided with a through hole in the direction perpendicular to the first clamping block 3, the second clamping block 4 and the third clamping block 5, and the through hole is used for fixing the pipeline.
[0053] Further, the diameter of the through hole is 5-8 cm, for example, it can be 5 cm, 5.3 cm, 5.8 cm, 6 cm, 6.5 cm, 6.8 cm, 7 cm, 7.3 cm, 7.5 cm, 7.9 cm, 8 cm, etc., but it is not limited to the listed values, and other values not listed in this range are also applicable.
[0054] It should be noted that the specific shape of the through hole in the utility model is not specially limited, and it can be fixed according to the structure of the pipeline, and a person skilled in the art can make adaptive adjustments according to the actual situation.
[0055] Further, the height of the first clamping block 3 is 8-10 cm, for example, it can be 8 cm, 8.2 cm, 8.4 cm, 8.6 cm, 8.8 cm, 9 cm, 9.2 cm, 9.4 cm, 9.6 cm, 9.8 cm, 10 cm, etc., but not limited to the listed values, other values not listed in this range are also applicable.
[0056] Further, the height of the second clamping block 4 is the same as that of the fifth clamping block 7.
[0057] Further, the side of the second clamping block 4 away from the bottom plate 1 is provided with an open clamping groove.
[0058] Further, the side of the fifth clamping block 7 away from the bottom plate 1 is provided with an open clamping groove.
[0059] Further, the open clamping groove is a U-shaped groove, which is used to fix the pipeline.
[0060] Further, the height of the second clamping block 4 is 4-6 cm, for example, it can be 4 cm, 4.2 cm, 4.4 cm, 4.6 cm, 4.8 cm, 5 cm, 5.2 cm, 5.4 cm, 5.6 cm, 5.8 cm, 6 cm, etc., but not limited to the listed values, other values not listed in this range are also applicable.
[0061] Further, the depth of the U-shaped groove is 3-5 cm, for example, it can be 3 cm, 3.2 cm, 3.4 cm, 3.6 cm, 3.8 cm, 4 cm, 4.2 cm, 4.4 cm, 4.6 cm, 4.8 cm, 5 cm, etc., but not limited to the listed values, other values not listed in this range are also applicable.
[0062] Further, the first clamping block 3, the second clamping block 4, and the third clamping block 5 are arranged in a triangular shape.
[0063] Further, the first clamping block 3 and the third clamping block 5 are flush, and the side edge of the second clamping block 4 is close to the fixed block 2.
[0064] Further, the first clamping block 3 and the third clamping block 5 are both provided with a first through groove, which is used to fix the pipeline.
[0065] Further, the fourth clamping block 6, the fifth clamping block 7, and the sixth clamping block 8 are arranged in a triangular shape.
[0066] Further, the fourth clamping block 6 and the sixth clamping block 8 are flush, and the side edge of the fifth clamping block 7 is close to the fixed block 2.
[0067] Further, the fourth clamping block 6 and the sixth clamping block 8 are both provided with a second through groove, which is used to fix the pipeline.
[0068] Further, the diameter of the first through slot is 5-7 cm, for example, it can be 5 cm, 5.2 cm, 5.4 cm, 5.6 cm, 5.8 cm, 6 cm, 6.2 cm, 6.4 cm, 6.6 cm, 6.8 cm, 7 cm, etc., but is not limited to the listed values, and other values not listed in this range are also applicable.
[0069] Further, the diameter of the second through slot is 5-7 cm, for example, it can be 5 cm, 5.2 cm, 5.4 cm, 5.6 cm, 5.8 cm, 6 cm, 6.2 cm, 6.4 cm, 6.6 cm, 6.8 cm, 7 cm, etc., but is not limited to the listed values, and other values not listed in this range are also applicable.
[0070] It should be noted that the specific shape of the first through slot and the second through slot in the utility model is not specially limited, and it can be fixed according to the structure of the pipeline, and those skilled in the art can make adaptive adjustments according to the actual situation.
[0071] Example 1
[0072] The embodiment provides a pipeline welding tool, wherein:
[0073] The pipeline welding tool comprises a bottom plate 1, a fixed block 2 is arranged at the middle of one side of the bottom plate 1 close to the edge, a first clamping block 3, a second clamping block 4 and a third clamping block 5 are sequentially arranged on one side of the fixed block 2, a fourth clamping block 6, a fifth clamping block 7 and a sixth clamping block 8 are sequentially arranged on the other side of the fixed block 2; the first clamping block 3, the second clamping block 4 and the third clamping block 5 and the fourth clamping block 6, the fifth clamping block 7 and the sixth clamping block 8 are symmetrically arranged in sequence with the fixed block 2 as the center; the height of the first clamping block 3, the third clamping block 5, the fourth clamping block 6 and the sixth clamping block 8 is the same.
[0074] The height of the fixed block 2 is 20 cm, the fixed block 2 is provided with a through hole in the direction perpendicular to the arrangement direction of the first clamping block 3, the second clamping block 4 and the third clamping block 5, the through hole is used for fixing the pipeline, and the diameter of the through hole is 8 cm. The height of the first clamping block 3 is 10 cm.
[0075] The height of the second clamping block 4 and the fifth clamping block 7 is the same, an open clamping groove is arranged on the side of the second clamping block 4 away from the bottom plate 1, and an open clamping groove is arranged on the side of the fifth clamping block 7 away from the bottom plate 1. The open clamping groove is a U-shaped groove, and the U-shaped groove is used for fixing the pipeline. The height of the second clamping block 4 is 6 cm, and the depth of the U-shaped groove is 4 cm.
[0076] The first clamping block 3, the second clamping block 4 and the third clamping block 5 are arranged in a triangular shape, the first clamping block 3 and the third clamping block 5 are flush, one side edge of the second clamping block 4 is arranged close to the fixed block 2, and the first clamping block 3 and the third clamping block 5 are both provided with a first through slot, and the first through slot is used for fixing a pipeline.
[0077] The fourth clamping block 6, the fifth clamping block 7 and the sixth clamping block 8 are arranged in a triangular shape, the fourth clamping block 6 and the sixth clamping block 8 are flush, one side edge of the fifth clamping block 7 is arranged close to the fixed block 2, and the fourth clamping block 6 and the sixth clamping block 8 are both provided with a second through slot, and the second through slot is used for fixing a pipeline.
[0078] The diameter of the first through slot is 5cm, and the diameter of the second through slot is 5cm.
[0079] In conclusion, the four flanges of the special-shaped pipeline during welding are all on the same plane of the bottom plate 1 through the specific combination of the bottom plate 1, the fixed block 2 and the clamping blocks, so that the stability and accuracy of the special-shaped pipeline positioning are ensured, and the low deformation of the special-shaped pipeline during welding is ensured.
[0080] The above merely describes the specific implementation of the present application, but the protection scope of the present application is not limited to this, and those skilled in the art should understand that any changes or replacements within the technical range disclosed by the present application, which can be easily thought of by any person skilled in the art, all fall within the protection scope and disclosure range of the present application.
Claims
1. A pipe welding tool, characterized by, The pipeline welding tool comprises a base plate, a fixed block arranged at the middle of one side of the base plate close to the edge, a first clamping block, a second clamping block and a third clamping block arranged in sequence on one side of the fixed block, a fourth clamping block, a fifth clamping block and a sixth clamping block arranged in sequence on the other side of the fixed block; The first clamping block, the second clamping block and the third clamping block are symmetrically arranged with the fourth clamping block, the fifth clamping block and the sixth clamping block as the center of the fixed block; The first clamping block, the third clamping block, the fourth clamping block and the sixth clamping block have the same height.
2. The pipe welding tooling of claim 1, wherein, The height of the fixed block is 15-25 cm.
3. The tubing welding tool of claim 1, wherein, The fixed block is provided with a through hole in the direction perpendicular to the arrangement direction of the first clamping block, the second clamping block and the third clamping block, and the through hole is used for fixing the pipeline.
4. The pipe welding tool of claim 3, wherein, The diameter of the through hole is 5-8 cm.
5. The tubing welding tool of claim 1, wherein, The height of the first clamping block is 8-10 cm.
6. The tubing welding tool of claim 1, wherein, The second clamping block and the fifth clamping block have the same height; The side of the second clamping block away from the base plate is provided with an open clamping groove; The side of the fifth clamping block away from the base plate is provided with an open clamping groove; The open clamping groove is a U-shaped groove, and the U-shaped groove is used for fixing the pipeline.
7. The pipe welding tool of claim 6, wherein, The height of the second clamping block is 4-6 cm; The depth of the U-shaped groove is 3-5 cm.
8. The tubing welding tool of claim 1, wherein, The first clamping block, the second clamping block and the third clamping block are arranged in a triangular shape; The first clamping block and the third clamping block are flush, and one side edge of the second clamping block is arranged close to the fixed block; First through grooves are arranged on the first clamping block and the third clamping block, and the first through grooves are used for fixing the pipeline.
9. The tubing welding tool of claim 8, wherein, The fourth clamping block, the fifth clamping block and the sixth clamping block are arranged in a triangular shape; The fourth clamping block and the sixth clamping block are flush, and one side edge of the fifth clamping block is arranged close to the fixed block; Second through grooves are arranged on the fourth clamping block and the sixth clamping block, and the second through grooves are used for fixing the pipeline.
10. The tubing welding tool of claim 9, wherein, The diameter of the first through groove is 5-7 cm; The diameter of the second through groove is 5-7 cm.