Lining construction

Abstract

Alleviates stress concentration due to thermal expansion difference and prevents damage to the lining member. A lining structure (1), which is a lining structure of a lining member (20) provided on a base material (10) of an insertion pipe (3), which is used for feeding a reaction vessel ( 2) adding reagents, the reaction vessel (2) is used for leaching under high temperature and high pressure conditions, wherein the base material (10) has a pipe part (11) and a flange part (12), and the lining member (20) is arranged on the base material (10) The material (10) is formed of a material different from the base material (10), and the lining member (20) has a pipe lining part (21) provided on the pipe part (11) and a pipe lining part (21) provided on the flange part (12). The flange lining part (22), the flange part (12) is formed with a chamfered part (13), and the pipe lining part (21) protrudes to the same height as the flat surface (22a) of the flange lining part (22) , the flange lining part (22) has a curved surface (24), and the curved surface (24) is convexly arranged on the chamfer (13) toward the base material (10) side, and is welded to the pipe lining part (21 ) protruding from the inclined surface (13a) of the chamfered portion (13).

Description

technical field [0001] The present invention relates to a lining structure that is effective as a countermeasure against breakage of a lining member provided on a metal base material of an insertion tube for adding chemicals to a reaction container due to a difference in thermal expansion under high temperature and high pressure conditions, The reaction vessel is used for leaching under high temperature and high pressure conditions. This application claims priority based on Japanese Patent Application No. Japanese Patent Application No. 2013-127541 for which it applied in Japan on June 18, 2013, and takes in this application in this application by reference. Background technique [0002] Conventionally, as disclosed in Patent Document 1, there is a technique in which a lining member is provided inside a pipe to prevent leakage of high-pressure or high-temperature fluid, corrosion, abrasion, or contamination. [0003] According to such techniques, such as image 3 As shown, ...

AI Technical Summary

Problems solved by technology

[0008] Therefore, when the insertion tube 103 for drug addition thermally expands under high temperature and high pressure conditions, the lining member 120 having a small thermal expansion coefficient cannot completely absorb the elongation at the flange portion 112, and cracks may appear in the lining member 120, which may cause The base material member 110 of the insertion tube 103 for chemical addition and the nozzle part of the autoclave 102 are damaged

[0009] If this is ignored and the damage reaches the degree of communication between the inside and the outside of the autoclave 102, such a result will occur: the high-pressure steam and chemical spray from the autoclave 102 not only have serious dangers, but also need to stop production and repair each Replacement and repair work of various components, resulting in a significant reduction in production efficiency

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