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公开(公告)号：EP3098507B1
公开(公告)日：2018-09-19
申请号：EP14874082.2
申请日：2014-12-25
CPC分类号： F22B37/103 , F01K7/32 , F22B1/18 , F22B3/08 , F22B29/061 , F22B29/067 , F22B37/12 , F28B1/00 , F28F1/40
摘要： A furnace wall tube (35) provided in a boiler and the interior of which is at supercritical pressure, and through which a heat medium circulates, said furnace wall tube having: spiral groove parts (36) formed in the inner peripheral surface and running in the axial direction of the tube; and rib parts (37) formed by means of the spiral grooves (36) so as to protrude radially inward. In a cross section along the axial direction of the tube, when the width [mm] of the groove parts (36) in tube axial direction is Wg, the height [mm] of the rib parts (37) in the radial direction is Hr, and the outer diameter [mm] of the tube is D, then the width (Wg) [mm] of the groove parts (36), the height (Hr) [mm] of the rib parts (37), and the tube diameter (D) [mm] satisfy the relationship Wg/(Hr·D) > 0.40.
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公开(公告)号：EP3098507A1
公开(公告)日：2016-11-30
申请号：EP14874082.2
申请日：2014-12-25
CPC分类号： F22B37/103 , F01K7/32 , F22B1/18 , F22B3/08 , F22B29/061 , F22B29/067 , F22B37/12 , F28B1/00 , F28F1/40
摘要： A furnace wall tube (35) provided in a boiler and the interior of which is at supercritical pressure, and through which a heat medium circulates, said furnace wall tube having: spiral groove parts (36) formed in the inner peripheral surface and running in the axial direction of the tube; and rib parts (37) formed by means of the spiral grooves (36) so as to protrude radially inward. In a cross section along the axial direction of the tube, when the width [mm] of the groove parts (36) in tube axial direction is Wg, the height [mm] of the rib parts (37) in the radial direction is Hr, and the outer diameter [mm] of the tube is D, then the width (Wg) [mm] of the groove parts (36), the height (Hr) [mm] of the rib parts (37), and the tube diameter (D) [mm] satisfy the relationship Wg/(Hr·D) > 0.40.
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