Local dry-type welding small-sized drainage device

Abstract

The invention relates to a local dry-type welding small-sized drainage device which mainly comprises a drainage hood body (1), a small-sized soldering gun (2) and a miniature underwater welding optical fiber sight glass (3), wherein the drainage hood body (1) mainly comprises a hood body upper end cover (10), a locking sleeve (11), a water seepage sleeve (12) and a lower end cover (13), the mall-sized soldering gun (2), and the miniature underwater welding optical fiber sight glass (3) and a high-pressure gas filter (4) are arranged in the drainage hood body (1). In the invention, sponge can always keep moist in the welding process by high-pressure water column poured into the water seepage sleeve to fulfill the function of protecting the sponge; the drainage hood body (1) is arranged underwater above drainage sponge (15) and is sleeved with a sealing sleeve (14), high-pressure gas is led into the body, water is drained through the drainage sponge (15), and then, underwater local dry-type welding can be carried out. The invention has the advantages of simple structure, stable and reliable work, low cost, easy popularization and simple use, maintenance and repair.

Description

technical field [0001] The invention relates to an underwater welding device, in particular to a small drainage device for realizing underwater partial dry welding. Background technique [0002] The current underwater welding drainage device can make a local anhydrous area between the two electrodes of the welding torch during underwater welding, create an environment similar to welding in the air, and change the wet welding into a local dry welding, so that the weld seam The quality is greatly improved. However, similar products at home and abroad have the disadvantages of poor drainage effect during welding, process monitoring during welding, or relatively complex and bulky monitoring equipment, which makes the entire drainage device complex in structure and large in size, and not easy to use during use. convenient. Contents of the invention [0003] According to the description of the background technology, the purpose of the present invention is to overcome the short...

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Problems solved by technology

[0003] According to the description of the background technology, the purpose of the present invention is to overcome the shortcomings of existing similar products that cannot be used for process monitoring during welding, or that the monitoring equipment is relatively complicated and bulky, and provides a kind of welding device consisting of a drainage cover, a small welding torch and a miniature underwater welding optical fiber. Composed of sight glass, small welding torch and miniature underwater welding fiber optic sight glass are installed on the top of the drainage cover, and an underwater sealing device is installed at the bottom of the drainage cover to allow the gas in the cover to discharge, but the water outside the cover cannot enter the welding area Partially Dry Welded Small Drains

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