公开(公告)号：US06481967B2

公开(公告)日：2002-11-19

申请号：US09790975

申请日：2001-02-23

申请人： Yasuoki Tomita ,  Yukihiro Hashimoto ,  Kiyoshi Suenaga ,  Hisato Arimura ,  Shunsuke Torii ,  Jun Kubota ,  Akihiko Shirota ,  Sunao Aoki ,  Tatsuo Ishiguro

发明人： Yasuoki Tomita ,  Yukihiro Hashimoto ,  Kiyoshi Suenaga ,  Hisato Arimura ,  Shunsuke Torii ,  Jun Kubota ,  Akihiko Shirota ,  Sunao Aoki ,  Tatsuo Ishiguro

IPC分类号： F01D518

CPC分类号： F01D5/20 ,  F01D5/186 ,  F01D5/187 ,  F05D2240/81 ,  F05D2250/185 ,  F05D2260/22141

摘要： A gas turbine moving blade is provided which prevents occurrence of cracks caused by thermal stresses due to temperature differences between a blade and a platform while the gas turbine is being stopped. During steady operation time of the moving blade, cooling air enters cooling passages to flow through other cooling passages for cooling the blade, and then to flow out of the blade. A recessed portion having a smooth curved surface is provided in the platform near a blade fitting portion on the blade trailing edge side. A fillet of the blade fitting portion on the blade trailing edge side has a curved surface with curvature larger than that of a conventional blade fitting portion. A hub slot below the fillet, for blowing air, has a cross sectional area larger than other slots of the blade trailing edge. A thermal barrier coating is applied to the blade surface. By the above construction, thermal stresses due to temperature differences between the blade and the platform during gas turbine stoppage are made smaller and occurrence of cracks is prevented.

摘要翻译： 提供了一种燃气轮机动叶片，其防止在燃气轮机停止时由于叶片和平台之间的温度差引起的热应力的发生。 在运动叶片的稳定运行时间内，冷却空气进入冷却通道，流过其它冷却通道，以冷却叶片，然后流出叶片。 具有光滑曲面的凹部在叶片后缘侧的叶片嵌合部附近设置在平台上。 叶片后缘侧的叶片嵌合部的圆角具有比现有的叶片嵌合部曲率大的曲率的曲面。 在圆角下方的用于吹送空气的轮毂槽的横截面积大于叶片后缘的其它槽。 将热障涂层施加到叶片表面。 通过上述结构，使得在燃气轮机停止期间由于叶片和平台之间的温度差导致的热应力变小，并且防止了裂纹的发生。

公开(公告)号：US06533542B2

公开(公告)日：2003-03-18

申请号：US10043201

申请日：2002-01-14

申请人： Hideaki Sugishita ,  Hisato Arimura ,  Yasuoki Tomita

发明人： Hideaki Sugishita ,  Hisato Arimura ,  Yasuoki Tomita

IPC分类号： F01D1108

CPC分类号： F01D9/04 ,  F01D5/145

摘要： A split ring is disposed on an inner wall of a gas turbine casing. The split ring is composed of a plurality of split segments that are arranged on the inner wall of the casing in circumferential direction. A predetermined clearance is formed between the inner face of a split segment and the rotor blade tips. The split segments are arranged so that a predetermined circumferential clearance is formed between the split segments in order to allow the thermal expansion of the segments. A circumferential end face located upstream side of the segments with respect to the direction of the rotor blade rotation is connected to the inner face by a transition face having a surface formed as an inclined plane. The inclined plane prevents the swirl flow caused by the rotating rotor blade from impinging the upstream end face and, thereby, suppresses a temperature rise of the split segment at the upstream end face.

公开(公告)号：US06328526B1

公开(公告)日：2001-12-11

申请号：US09531148

申请日：2000-03-17

申请人： Naoyuki Seki ,  Hisato Arimura

发明人： Naoyuki Seki ,  Hisato Arimura

IPC分类号： F01D1700

CPC分类号： F02C7/26 ,  F04D27/0223 ,  F04D27/023

摘要： Gas turbine starting method is improved to start operation with bleed valves being first throttled, then fully opened on the way and then fully closed at 90% speed, thereby fluid unstableness phenomenon is suppressed and starter motor power is reduced. While inlet guide vane (11) and variable stator vanes (C1 to C5) are set to predetermined opening from starting to rated speed, bleed valves (1, 2, 3) are set to predetermined opening until 52% speed for the bleed valve (1) and until 51% speed each for the bleed valves (2, 3), then the bleed valves (1, 2, 3) are fully opened until the speed exceeds 90%, when they are fully closed for rated operation. In the prior art, starting operation is done with bleed valves being first fully opened until the speed is elevated to 90% and then fully closed, but in the present invention, air discharged into ambient air in vain can be reduced and thereby starter motor power can be also reduced.

摘要翻译： 燃气轮机启动方法得到改进，首先节流排气阀开始运行，然后在途中完全打开，然后以90％的速度完全关闭，从而抑制液体不稳定现象，起动电机功率降低。 当入口引导叶片（11）和可变定子叶片（C1至C5）被设定为从开始到额定速度的预定开度时，放气阀（1,2,3）被设定为预定的开度直到排放阀的52％ 1），直到排放阀（2,3）的速度提高到51％，然后当额定运行完全关闭时，排气阀（1,2,3）完全打开，直到速度超过90％。 在现有技术中，开始操作是通过首先完全打开放气阀直到速度提升到90％然后完全关闭的方式进行的，但是在本发明中，可以减少排放到环境空气中的空气，从而起动电动机功率 也可以减少。

公开(公告)号：US5165857A

公开(公告)日：1992-11-24

申请号：US757625

申请日：1991-09-11

申请人： Toyoaki Furukawa ,  Mitsushige Goto ,  Hisato Arimura

发明人： Toyoaki Furukawa ,  Mitsushige Goto ,  Hisato Arimura

IPC分类号： F04D29/28 ,  F04D29/66

CPC分类号： F04D29/662 ,  F04D29/281 ,  Y10T403/645 ,  Y10T403/7047

摘要： An improved centrifugal fan in which a fan blade is supported by a main plate and a side plate and said main plate is connected to a rotation shaft, characterized in that between the rotation shaft and the main plate, there is interposed a doughnut-shaped connecting plate penetrated by the rotation shaft at the central part thereof, the connecting plate is fixed to the rotation shaft and to the main plate, at the inner and outer circumferential parts of the connecting plate, respectively, a plurality of through holes are provided in the inner and outer circumferential parts of the connecting plate in the circumferential directions, respectively, and slits are formed between each pair of two opposite through holes positioned obliquely with respect to the direction of radius of the connecting plate. Non-reversible displacement of the center of the fan blade is avoided which is a major factor in the vibration of the fan blade.

摘要翻译： 一种改进的离心风扇，其中风扇叶片由主板和侧板支撑，所述主板连接到旋转轴，其特征在于，在旋转轴和主板之间插入有环形连接 在其中央部分由旋转轴穿透的板，连接板分别在连接板的内周和外周部分固定到旋转轴和主板，多个通孔设置在 连接板的圆周方向的内圆周部分和外圆周部分分别形成在相对于连接板的半径方向倾斜设置的每对相对的通孔之间。 避免了风扇叶片中心的不可逆位移，这是风扇叶片的振动的主要因素。

公开(公告)号：US06634175B1

公开(公告)日：2003-10-21

申请号：US09762598

申请日：2001-02-09

申请人： Yutaka Kawata ,  Shigemi Mandai ,  Yoshiaki Tsukuda ,  Eiji Akita ,  Hisato Arimura

发明人： Yutaka Kawata ,  Shigemi Mandai ,  Yoshiaki Tsukuda ,  Eiji Akita ,  Hisato Arimura

IPC分类号： F23R310

CPC分类号： F23R3/04

摘要： A gas turbine combustor has homogenous air inflow by elimination of turbulence from the air, reducing combustion instability. A combustor 3 has, at its center, a pilot nozzle 8 and eight main nozzles 7 around the pilot nozzle 8. The air flows in around the individual nozzles 7 and 8 to the leading end of the combustor 3 so that it is used for combustion. An annular flow ring 20, having a semicirculat section, is disposed at the upstream end portion of a combustion cylinder 10, and a porous plate 50 and a surrounding rib 51 are disposed downstream of the flow ring 20. The air inflow is smoothly turned at first by the flow ring 20 and then straightened by the porous plate 50 so that the air flows without any disturbance around the individual nozzles 7 and 8 to the leading end, thereby reducing combustion instability.

摘要翻译： 燃气轮机燃烧器通过消除来自空气的紊流而具有均匀的空气流入，从而降低燃烧不稳定性。 燃烧器3在其中心处具有引导喷嘴8和围绕引燃喷嘴8的八个主喷嘴7.空气在单独的喷嘴7和8周围流到燃烧器3的前端，使其用于燃烧 。 具有半圆形部分的环形流动环20设置在燃烧气缸10的上游端部，并且多孔板50和周围肋51设置在流动环20的下游。空气流入平滑地转向 首先通过流动环20，然后由多孔板50拉直，使得空气在各个喷嘴7和8周围没有任何干扰地流到前端，从而减少燃烧不稳定性。