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 increase greatly, and alloy materials used in nuclear power plants, especially heat transfer tubes used in some key equipment (such as Inconel 690 heat transfer tubes for steam generators) have always been Relying on imports 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 requiremen...

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Problems solved by technology

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

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