Thyristor group valve acaleph matched main tube and manufacturing technology

Abstract

The invention discloses a main distribution pipe of a thyristor valve group and a production method thereof, comprising a pipe. A pipe plug is arranged on one end of the pipe; a flange and a flange connector are arranged on the other end of the pipe; a plurality of distribution nuts are arranged on the pipe; the pipe, the pipe plug, the flange, the flange connector and the distribution nuts are all made of PPH or PVDF material; the pipe is welded to the distribution nuts in a hot-melt pressure welding mode; the flange, the flange connector and the pipe plug are welded to the distribution nuts in an infrared welding mode; the distribution nuts are integrated with the pipe as one through pressure heat welding. The welding mechanical strength and pressure resistance grade are high; such parameters as welding temperature, time and pressure are controlled mechanically and human factors involved are few, thus guaranteeing the uniformity of the performance of all craters. The main distribution pipe of the thyristor valve group and the production method thereof have reasonable working procedure arrangement, thereby increasing the yield rate of products.

Description

technical field [0001] The invention relates to a direct-current power transmission and distribution device, in particular to a thyristor valve group distribution jellyfish tube for high-voltage direct-current transmission and its manufacturing process. Background technique [0002] The traditional power grid is networked in the form of AC, which has the advantages of simple implementation, low investment, and when one side of the grid loses power, the other side of the grid will provide emergency support in a natural accident, and the response speed is fast. However, because of the natural "bundling" between the two networks after networking, the AC synchronization range is extended. When one of the grids fails, it will affect multiple interconnected grids, which will expand the consequences of the failure, reduce the power quality, and easily cause contact. Large fluctuations in line power, or even shock to the weak link of the system, thereby increasing the probability of...

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Problems solved by technology

[0006] (1) Adhesive bonding process: the water distribution nut and the pipe are bonded together with an adhesive. The process is simple, but the service life is short, generally about 3 to 5 years

[0007] (2) Using electrode filling welding process: use the same material electrode as the water distribution nut and pipe to weld around the water distribution nut and pipe contact. The welding area of ​​this process is small, and the welding strength is difficult to be low. Ensure uniformity, resulting in high scrap rate and difficult detection of product hidden defects; pipelines are easy to bend and deform, affecting the emptying of water in the pipeline

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