Welding and assembling platform of nuclear power station reactor cavity water gate

Abstract

The invention discloses a welding and assembling platform which comprises a plurality of small platforms, wherein the small platforms can be spliced, made of carbon steel, and connected through a connecting device arranged at the lower part, each small platform comprises a frame plate, a supporting rid and a panel, the frame plate is arranged around the lower part of the panel, the supporting rid is also supported below the panel, and the connecting device comprises a connecting block and a connecting bolt. Regulating support legs for regulating the small platforms to be horizontal are arranged around the frame plate of each small platform. A steel plate is arranged at the gap between the adjacent small platforms. A layer of stainless steel thin plate is arranged above the panel of each small platform. The welding and assembling platform has relatively simpler manufacturing process, can be flexibly assembled on a manufacturing site, can form a relatively precise clamp, and can prevent a stainless steel workpiece from being polluted by iron ions.

Description

technical field [0001] The invention relates to a large-scale riveting and welding platform, in particular to a welding and assembling platform for large-scale stainless steel water gates in reactor chambers of nuclear power plants. Background technique [0002] Existing working platforms for riveter welding are in the form of flat plates using cast iron materials, with round holes and T-shaped slots on the working surface, and the T-shaped slots are mainly used to fix weldments. At present, the largest standard cast iron riveting platform in China is: length × width = 8000 × 4000mm. The nuclear power plant reactor cavity water gate is made of stainless steel, with a length of about 10 meters, a width of about 7 meters, and a height of about 0.5 meters. It is a large flat welding workpiece. The structure of the water gate is relatively complicated. , length and other requirements are higher. [0003] For the production of large-scale riveting and welding workpieces, assemb...

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Problems solved by technology

However, in actual production, cast iron platforms have the following deficiencies: 1) Products manufactured by riveting and welding technology are mostly single-piece and small batches, which are characterized by various structural forms and a variety of temporary tooling. In order to facilitate construction, often need All kinds of temporary tooling are directly welded on the platform, while the cast iron platform cannot meet the requirements of temporary welding. If the T-slot on the platform is used to install a specially designed and manufactured positioning fixture, additional manufacturing costs will be added; 2) There are various materials for riveting and welding, such as carbon steel, stainless steel, titanium and other non-ferrous metal materials. For the riveting and welding of workpieces such as stainless steel and titanium, in order to prevent contamination by iron ions, special protective measures need to be taken. It is more difficult to make reliable guards on cast iron platforms

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