How to extend the life of high-temperature piping and the structure for extending the life of high-temperature piping
A life-extending, high-temperature technology, applied in the direction of pipes/pipe joints/fittings, heat preservation, pipeline protection, etc., can solve the problems of reduced operating efficiency of equipment and equipment, and achieve the effect of prolonging the remaining life and prolonging the life of creep rupture
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Embodiment 1
[0050] figure 1 It is a schematic diagram of the life-extending structure of the high-temperature piping of Example 1.
[0051] Such as figure 1 As shown, in the life-extending structure of the high-temperature piping of this embodiment, the creep is confirmed by the remaining life evaluation of the creep rupture of the welded portion 12 of the high-temperature piping (hereinafter referred to as "piping") 11 as a high-temperature member. In the position with a high risk of fracture (welding portion with a high degree of creep damage), and it is judged that it cannot continue to be used normally, a part of the heat insulating material 13 covering the position with a high risk of creep rupture of the pipe 11 is removed along the direction of rotation and removed. Forming the exfoliation portion 14, the temperature of the outer surface of the pipe 11 is locally lowered, thereby realizing the extension of the life of the creep rupture site.
[0052] exist figure 1 In , referenc...
Embodiment 2
[0080] Figure 4 It is a schematic diagram of the life-extending structure of the high-temperature piping of Example 2. Figure 5 yes Figure 4 stereogram. In addition, the same code|symbol is attached|subjected to the member which overlaps with the structure of Example 1, and the description is abbreviate|omitted. Such as Figure 4 as well as Figure 5 As shown, the life-extending structure of the high-temperature piping in Example 2 is provided so that the multilayered fins 17 as heat dissipation members are in close contact with the periphery of the stripped portion 14 obtained by removing the heat insulating material 13 in Example 1.
[0081] Such as Figure 5 As shown, the upper fin 17A having the plurality of fins 18 and the lower fin 17B having the plurality of fins 18 are fastened by the fastening member 20 in such a manner that the flanges 19 are aligned with each other.
[0082] Thickness of fin 18 (d 11 ) such as 70mm, height (h 11 ) is about 300mm, forming ...
Embodiment 3
[0089] Figure 7 It is a schematic diagram of the life-extending structure of the high-temperature piping of Example 3. In addition, the same code|symbol is attached|subjected to the member which overlaps with the structure of Example 1, and the description is abbreviate|omitted. Such as Figure 7 As shown, the life-extending structure of high-temperature piping in Example 3 cools the surface of the exfoliated part 14 obtained by removing the heat insulating material 13 in Example 1 with the cooling medium (for example, air) 21 . Here, as the cooling medium 21, miscellaneous waste gas, an inert gas, etc. can be used other than air.
[0090] Figure 8 It is a perspective view which shows an example of the air supply mechanism which supplies cooling air.
[0091] Such as Figure 8 As shown, an annular air supply mechanism 22 is provided along the outer periphery of the stripped portion 14 of the piping 11, and air 23 is blown from the air ejection holes (not shown) of the a...
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Abstract
Description
Claims
Application Information
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