发明名称 |
HEAT TRANSFER TUBE, BOILER AND STEAM TURBINE DEVICE |
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. |
申请公布号 |
CA2935039(A1) |
申请公布日期 |
2015.07.02 |
申请号 |
CA20142935039 |
申请日期 |
2014.12.25 |
申请人 |
MITSUBISHI HITACHI POWER SYSTEMS, LTD. |
发明人 |
NAKAHARAI, HIROYUKI;KANEMAKI, YUICHI;DOMOTO, KAZUHIRO;YAMASAKI, YOSHINORI |
分类号 |
F22B37/12;F22B1/18;F28F1/40 |
主分类号 |
F22B37/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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