690 alloy u-shaped heat transfer pipe production line for nuclear power evaporator

Abstract

The invention discloses a 690 alloy U-shaped heat transfer pipe production line for a nuclear power evaporator. The 690 alloy U-shaped heat transfer tube production line comprises two adjacent longitudinal spans and a transverse span which is arranged at the ends of the two adjacent longitudinal spans and is adjacent to and perpendicular to the two adjacent longitudinal spans; the whole production line has an n shape; a cogging area, a finished product area, a blend area and other production operation areas are respectively arranged in two adjacent longitudinal span plants (AB and BC spans), and the transverse plant (DE span) is mainly used for span transfer for finished product elongated pipes. The pipe blank enters into the n-shaped factory from one end of the longitudinal plant and is gradually pushed in the communicating area according to the process flow, and the finished products are discharged from the other end of the adjacent longitudinal plant; and the whole process is smooth, and the technical problem that the super-long pipes (28m) need to be repeatedly transferred in multiple production spans can be solved, so that the non-grounded production of the 690 alloy U-shaped pipes is realized, and the continuous and stable operation of the whole production process is guaranteed.

Description

technical field [0001] The invention relates to a production line of U-shaped heat transfer tubes, in particular to a production line of 690 alloy U-shaped heat transfer tubes for nuclear power evaporators. Background technique [0002] According to the country's overall strategic plan for vigorously developing nuclear power, the demand for materials used in nuclear power construction will greatly increase, and alloy materials for nuclear power plants, especially heat transfer tubes for some key equipment (such as Inconel690 heat transfer tubes for steam generators) have been relying on It is imported from only three manufacturers in the world, namely Valinox in France, Sumitomo in Japan and Sandvik in Sweden; due to the technical blockade of foreign companies, there is no reference material and experience for the production line during design and construction. [0003] 690 alloy U-shaped heat transfer tubes for nuclear power evaporators have high quality requirements, numer...

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Problems solved by technology

[0005] The object of the present invention is to: propose a kind of production line of 690 alloy U-shaped heat transfer tubes for nuclear power evaporators, which can solve the technical problem that super-long pipes (28m) need to be turned multiple times across multiple production areas; make the 690 alloy U-shaped tubes How to achieve "non-landing" production in production to ensure the continuous and stable production process

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