A welding protection device for the inner wall of a pipeline
A protection device and pipeline technology, applied in welding equipment, welding equipment, auxiliary equipment, etc., can solve the problem of wasting protective gas, etc., and achieve the effects of avoiding waste, uniform distribution of air flow, and ensuring quality
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[0027] Such as Figure 1 to Figure 5 As shown, the protection device includes an inflatable tube 1 for transporting protective gas and an air diffuser structure arranged on the inflatable tube 1. The second diffuser tube 2 on the outer peripheral side of the trachea 8, the first diffuser tube 8 is provided with a first diffuser hole 9, the second diffuser tube 2 is provided with a second diffuser hole 4, the first diffuser tube 8 and the second diffuser A diffuser layer 7 is also arranged between the two diffuser pipes 2, and a diffuser channel is arranged in the diffuser layer 7, so that the protective gas can be evenly diffused from the diffuser structure.
[0028] Specifically, the inflatable tube 1 in this embodiment is a flexible tube, specifically a rubber tube, a plastic tube, a fiber tube, etc. The design of the tube enables the protection device to adapt to curved tubes. In other embodiments, the material of the gas tube 1 can also be a material with a small amount o...
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