CN-122007547-A - Pipeline material-increasing welding device with directional cooling function

Abstract

The invention discloses a pipeline additive welding device with a directional cooling function, which comprises a mounting seat, a welding executing piece, a welding cooling component and an air flow isolation component, wherein the welding executing piece is fixed at the front end of the mounting seat, the welding cooling component comprises an air inlet pipe which is movably connected to the mounting seat along the horizontal direction, the lower end of the air inlet pipe is connected with a C-shaped nozzle, the air flow isolation component is movably connected to the mounting seat along the horizontal direction, the air flow isolation component is positioned between the welding executing piece and the welding cooling component, and a unidirectional diversion exhaust channel is formed between the air flow isolation component and the C-shaped nozzle. The invention constructs a unidirectional diversion exhaust channel with definite directivity, forces the exhaust gas and the reflected air flow to be discharged to the rear side only, and improves the welding quality.

Inventors

• YUAN KE
• WANG YANING
• CAO YIPING
• SUN BO
• LIU ZIHAN
• HU YIJIE
• LI JIAYING
• ZHANG MENGFEI
• GAO CAILING
• WANG MENG
• GAO XIN
• FENG WEIBO
• LIU JINE
• ZHENG JIE
• WENG GUANGYUAN

Assignees

• 西安特种设备检验检测院
• 西安石油大学

Dates

Publication Date

20260512

Application Date

20260313

Claims (10)

1. 1. Pipeline additive welding device that possesses directional cooling function, its characterized in that includes: a mounting base (1); A welding execution piece (2), wherein the welding execution piece (2) is fixed at the front end of the mounting seat (1); The welding-following cooling assembly comprises an air inlet pipe (4) which is movably connected to the mounting seat (1) along the horizontal direction, the lower end of the air inlet pipe (4) is connected with a C-shaped nozzle (41), and the air outlet end of the C-shaped nozzle (41) faces to a pipeline (7) to be welded; the air flow isolation assembly is movably connected to the mounting seat (1) along the horizontal direction, is positioned between the welding executing piece (2) and the welding cooling assembly, and forms a one-way diversion exhaust channel with the C-shaped nozzle (41).
2. 2. The pipeline additive welding device with the directional cooling function according to claim 1, wherein the airflow isolation assembly comprises a hanging connecting rod (31) movably connected to the mounting seat (1) along the horizontal direction, the lower end of the hanging connecting rod (31) is connected with a main heat insulation plate (32), two sides of the main heat insulation plate (32) are provided with arc-shaped flow guide wing plates (33) extending backwards, and the main heat insulation plate (32) and the arc-shaped flow guide wing plates (33) form a semi-enclosed cavity structure with a closed front end and an open rear end.
3. 3. The device for welding the pipeline additive with the directional cooling function according to claim 2, wherein an included angle between a tangent line of the arc-shaped flow guide wing plate (33) and a welding traveling direction is an exhaust deflection angle gamma, and the exhaust deflection angle gamma ranges from 30 degrees to 70 degrees.
4. 4. A pipe additive welding device with a directional cooling function according to claim 2, wherein the radius of curvature of the arc-shaped flow guiding wing plate (33) is gradually reduced outwards from the connection part with the main heat insulation plate (32).
5. 5. A pipe additive welding device with a directional cooling function according to claim 2, wherein a protruding structure (35) is arranged in the middle of the main heat insulation plate (32), and the protruding structure (35) at least enables the rear end face of the main heat insulation plate (32) to be provided with an arc-shaped guide surface extending backwards.
6. 6. The pipe additive welding device with the directional cooling function according to any one of claims 2-5, wherein a plurality of flow guide grooves (34) are distributed on the inner concave surface of the rear side of the arc-shaped flow guide wing plate (33), and the extending direction of the flow guide grooves (34) is parallel to the exhaust direction.
7. 7. The pipe additive welding device with the directional cooling function according to claim 1, wherein rectifying blades (42) are distributed in an inner cavity of the C-shaped nozzle (41), the extending direction of the rectifying blades (42) is parallel to the air outlet direction of the C-shaped nozzle (41), and the rectifying blades (42) divide the interior of the C-shaped nozzle (41) into a plurality of spray cavities.
8. 8. A pipe additive welding device with a directional cooling function as set forth in claim 1, wherein said C-shaped nozzle (41) is inclined backward from top to bottom with respect to a central axis of said intake pipe (4) at an angle α of 30 ° or more and α or less than 60 °.
9. 9. The pipe additive welding device with the directional cooling function according to claim 8, wherein the air outlet end face of the C-shaped nozzle (41) is obliquely arranged from front to back and downwards relative to a horizontal plane.
10. 10. The pipe additive welding device with the directional cooling function according to claim 1, wherein the mounting seat (1) is provided with a T-shaped guide chute (5) penetrating along the length direction of the mounting seat, a first screw rod mechanism and a second screw rod mechanism are arranged in the T-shaped guide chute (5), the first screw rod mechanism is connected with the welding cooling assembly, and the second screw rod mechanism is connected with the airflow isolation assembly.

Description

Pipeline material-increasing welding device with directional cooling function Technical Field The invention relates to the technical field of pipeline welding, in particular to a pipeline material-increasing welding device with a directional cooling function. Background With the increasing demand for oil and gas transportation, large-caliber and high-strength pipelines (such as X80 steel grade) are increasingly used. In the pipe arc additive manufacturing or automatic welding process, in order to control welding heat input and improve the structural performance of a weld joint and a heat affected zone, a cooling process along with welding is generally required to be matched, and the temperature peak value of a pipe wall is reduced and the high-temperature residence time is shortened by externally adding a cooling medium. The conventional cooling device with welding is characterized in that a cooling component is added on the welding device, on one hand, the position arrangement between a welding execution component and the cooling component is fixed, the distance and the relative angle between the components are difficult to flexibly adjust according to pipe diameters and technological parameters, so that a stable and controllable exhaust channel cannot be formed to adapt to working conditions of different pipe diameters or different welding parameters, on the other hand, the conventional cooling component is mainly characterized in that a circular straight pipe structure is used for directly spraying cooling media to a welding line, an air outlet of the circular straight pipe structure cannot be effectively attached to the curved surface characteristic of the outer wall of a pipeline, so that the punctiform or small-range impact cooling can only be carried out on the outer wall of the pipeline, the effective cooling area is limited and the cooling is uneven, the welding line and a heat affected zone thereof are difficult to form uniform temperature gradient control, on the other hand, the conventional device is generally provided with a simple baffle plate structure between a welding gun and the nozzle, the baffle is generally not capable of forming a diversion channel with constraint force with the rear nozzle, and the baffle plate is generally adopted, and experiments show that when an air flow hits a baffle plane, local separation is generated at the front edge of the plate, turbulence and vortex is easy to flow back, and the unconstrained air flow tends to flow, and an inert gas protection layer of the welding area is damaged, so that the air hole is easy to cause the oxidation defect or the welding line is generated. Disclosure of Invention Aiming at the technical problems existing at present, the invention provides a pipeline material-increasing welding device with a directional cooling function, which aims to solve the problems of uneven coverage of a cooling area, lack of effective airflow guiding and poor adaptability of the device in the prior art. In order to achieve the above object, the present invention provides the following technical solutions: A pipe additive welding device with directional cooling function, comprising: a mounting base; the welding executing piece is fixed at the front end of the mounting seat; the welding-following cooling assembly comprises an air inlet pipe which is movably connected to the mounting seat along the horizontal direction, the lower end of the air inlet pipe is connected with a C-shaped nozzle, and the air outlet end of the C-shaped nozzle faces to a pipeline to be welded; The air flow isolation assembly is movably connected to the mounting seat in the horizontal direction, is positioned between the welding executing piece and the welding cooling assembly, and forms a one-way diversion exhaust channel with the C-shaped nozzle. Preferably, the airflow isolation assembly comprises a hanging connecting rod movably connected to the mounting seat along the horizontal direction, the lower end of the hanging connecting rod is connected with the main heat insulation plate, the two sides of the main heat insulation plate are provided with arc-shaped flow guide wing plates extending backwards, and the main heat insulation plate and the arc-shaped flow guide wing plates form a semi-enclosed cavity structure with a closed front end and an open rear end. According to the scheme, when air flow enters a semi-enclosed cavity structure formed by the main heat insulation plate and the arc-shaped flow guide wing plates, the air flow can be discharged from the arc-shaped flow guide wing plates at two sides to the side rear under the flow blocking effect of the main heat insulation plate and the flow guiding effect of the arc-shaped flow guide wing plates. Preferably, the included angle between the tangent line of the arc-shaped flow guiding wing plate and the welding advancing direction is an exhaust deflection angle gamma, and the range of the exhaust deflection angle gamma i