A local vacuum laser welding device for pipeline circular seams and a welding method based on the welding device
A local vacuum and laser welding technology, which is applied in the direction of laser welding equipment, welding equipment, tubular objects, etc., can solve the problems of large size and poor feasibility, and achieve the effect of reduced welding cost, simple device and strong operability
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specific Embodiment approach 1
[0029] Specific implementation mode one: refer to figure 1 and figure 2 This embodiment will be specifically described. A partial vacuum laser welding device for pipe circular seams described in this embodiment includes: a laser processing system, an external partial vacuum shell 2-1, an internal partial vacuum shell 3-1 and Dynamic seal assembly 4;
[0030] The external partial vacuum shell 2-1 is socketed on the outer wall of the pipeline 6 to be welded, and an external partial vacuum chamber is formed between the external partial vacuum shell 2-1 and the pipeline 6 to be welded; the internal partial vacuum shell 3-1 is embedded in the pipeline to be welded. The inner wall of the welded pipe 6, the inner partial vacuum housing 3-1 and the pipe 6 to be welded form an inner partial vacuum chamber; the weld seam of the pipe 6 to be welded is located between the outer partial vacuum chamber and the inner partial vacuum chamber.
[0031] The external partial vacuum chamber and...
specific Embodiment approach 2
[0036] Specific embodiment 2: This embodiment is to further limit the partial vacuum laser welding device for pipeline annular seams described in specific embodiment 1. In this embodiment, the laser processing system includes a laser 1-1 and a laser processing head 1- 2. The laser light emitted by the laser 1-1 is emitted through the laser processing head 1-2, and the laser processing head 1-2 communicates with the external partial vacuum chamber through the dynamic sealing assembly 4.
[0037] In this embodiment, the laser 1-1 is an industrial laser 1-1, and the industrial laser 1-1 may be a CO2 laser for laser welding, a fiber laser, or a disk laser. The laser processing head 1-2 is an industrial laser processing head, for example: Germany PRECTICE YW52 laser processing head. For fiber lasers and disk lasers, optical fibers are used to transmit laser light between industrial lasers and laser processing heads. For CO 2 The laser uses a hard optical path to transmit laser lig...
specific Embodiment approach 3
[0038] Specific implementation mode three: refer to image 3 and Figure 4 Describe this embodiment in detail. This embodiment is to further limit the partial vacuum laser welding device for pipeline circular seams described in Embodiment 2. In this embodiment, the dynamic sealing assembly 4 includes a dynamic sealing rubber ring 4-1, Dynamic sealing control mechanism 4-2 and guiding mechanism 4-3;
[0039] The dynamic sealing rubber ring 4-1 is fixed on the outside of the opening groove 2-3, and is used for sealing the external partial vacuum chamber;
[0040] The dynamic sealing control mechanism 4-2 is a box body with an open top, and the two opposite side walls of the dynamic sealing control mechanism 4-2 are provided with openings 4-5, and the dynamic sealing control mechanism 4-2 utilizes two openings 4-5 Buckled on the dynamic sealing rubber ring 4-1, the opening 4-5 is closely matched with the dynamic sealing rubber ring 4-1, and the bottom plate of the box body of the...
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