Steam turbine low-pressure final stage moving blade with bone-type enclosing strip and boss tie pieces

• Main Authors: ZHANG QIUHONG, GUAN MINGCHEN, NI YONGJUN, WU BO, QIAN GUORONG, LI QING, AN YANG, MEI YONGLIN, LI YUFENG, LV ZHIQIANG, YANG QIGUO
• Format: Patent
• Language: Chinese; English
• Published: 16.06.2010
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; STEAM ENGINES; WEAPONS

The invention discloses a steam turbine low-pressure final stage moving blade with a bone-type enclosing strip and boss tie pieces and relates to a final stage moving blade. The invention solves the problem of final stage blade fracture accidents during operations of the traditional large-size full rotating speed steam turbines. The final stage moving blade comprises an inner arc boss tie piece, a back arc boss tie piece and a bone-type enclosing strip, wherein the inner arc boss tie piece is arranged on the surface of an inner arc; the back boss tie piece is arranged on the surface of a back arc; and the bone-type enclosing strip is arranged on the top end face of a blade main body. The bone-type enclosing strip and the boss tie pieces are detailedly calculated so as to reasonably determine the overall dimensions of the bone-type enclosing strip and the boss tie pieces, thereby solving the problem of the final stage blade fracture accidents during the operations of the traditional large-size full rotating sp