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公开(公告)号：US08287236B2
公开(公告)日：2012-10-16
申请号：US12117288
申请日：2008-05-08
申请人： Hideo Nishida , Hiromi Kobayashi , Masanori Tanaka , Tadaharu Kishibe , Manabu Yagi , Tetsuya Kuwano
发明人： Hideo Nishida , Hiromi Kobayashi , Masanori Tanaka , Tadaharu Kishibe , Manabu Yagi , Tetsuya Kuwano
IPC分类号： F04D1/10
CPC分类号： F04D29/444 , F04D17/122 , F04D29/4213
摘要： A multistage centrifugal compressor includes a rotary shaft, and multistage impellers attached to the rotary shaft. Each of the impellers includes a hub, a shroud and blades therebetween in a radial cascade arrangement. An annular suction passage for guiding the fluid flow from the inward radial direction to a blade inlet is disposed upstream of the centrifugal impeller. A diffuser is disposed downstream of the centrifugal impeller. A bend portion is disposed downstream of the diffuser, and a return channel with a guide blade portion is disposed downstream of the bend portion. The annular suction passage at a hub side includes an axial parallel portion.
摘要翻译： 多级离心压缩机包括旋转轴和连接到旋转轴的多级叶轮。 每个叶轮在径向级联布置中包括轮毂，护罩和叶片。 用于将流体流动从内向径向引导到叶片入口的环形抽吸通道设置在离心式叶轮的上游。 扩散器设置在离心式叶轮的下游。 弯曲部设置在扩散器的下游，并且具有引导叶片部分的返回通道设置在弯曲部分的下游。 在轮毂侧的环形吸入通道包括轴向平行部分。
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公开(公告)号：US08308420B2
公开(公告)日：2012-11-13
申请号：US12183443
申请日：2008-07-31
申请人： Manabu Yagi , Tadaharu Kishibe , Takanori Shibata , Hideo Nishida , Hiromi Kobayashi , Tetsuya Kuwano
发明人： Manabu Yagi , Tadaharu Kishibe , Takanori Shibata , Hideo Nishida , Hiromi Kobayashi , Tetsuya Kuwano
IPC分类号： F04D27/00
CPC分类号： F04D29/284 , F04D29/30
摘要： A centrifugal compressor is equipped with an impeller having a blade angle distribution that makes it possible to achieve a relatively wide operating range. The blade angle of a shroud side facing a circular plate of a blade is termed a first angle and a blade angle of a hub side disposed at the circular plate is a second. The shroud side is formed in a curved shape having an angle distribution from a front area in a shaft direction toward a centrifugal direction in which the first angle is the local maximum point before a substantially middle portion and the local minimum point after the substantially middle point. The hub side is formed in a curved shape having an angle distribution from the front area in the shaft direction toward the centrifugal direction in which the second angle is the maximum local point before the substantially middle portion.
摘要翻译： 离心压缩机配备有具有叶片角度分布的叶轮，其能够实现相对宽的操作范围。 面向叶片圆板的护罩侧的叶片角度称为第一角度，并且设置在圆板处的轮毂侧的叶片角度为第二角度。 护罩侧形成为具有从轴方向的前方区域朝向离心方向的角度分布的弯曲形状，其中第一角度在大致中间部分之前的局部最大点和大体上中点之后的局部最小点 。 毂侧形成为具有从轴方向的前方区域朝向离心方向的角度分布的弯曲形状，其中第二角度是大致中间部分之前的最大局部点。
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公开(公告)号：US08267644B2
公开(公告)日：2012-09-18
申请号：US12511743
申请日：2009-07-29
申请人： Hideo Nishida , Hiromi Kobayashi , Masanori Tanaka , Tetsuya Kuwano , Toshio Itou , Takanori Shibata , Manabu Yagi
发明人： Hideo Nishida , Hiromi Kobayashi , Masanori Tanaka , Tetsuya Kuwano , Toshio Itou , Takanori Shibata , Manabu Yagi
IPC分类号： F04D29/44
CPC分类号： F04D17/122 , F04D29/441 , F04D29/444
摘要： In a multistage centrifugal compressor, a plurality of impellers is attached to the same rotary shaft. Vaned Diffusers and vaneless diffusers are used, as diffusers, for respective compressor stages configuring the compressor. The vaned diffusers are continuously used from the first compressor stage to the middle compressor stage, and the vaneless diffusers are used for the last compressor stage and the previous stage. While high efficiency is maintained at the compressor stages having the vaned diffusers, an operating flow range is secured at the compressor stages having the vaneless diffusers.
摘要翻译： 在多级离心式压缩机中，多个叶轮连接在同一个旋转轴上。 对于构成压缩机的各个压缩机级，使用Vaned扩散器和无叶扩散器作为扩散器。 从第一压缩机阶段到中间压缩机阶段连续使用有叶扩散器，无级扩散器用于最后一个压缩机级和前一级。 在具有带叶片的扩散器的压缩机级保持高效率的情况下，在具有无叶漫射器的压缩机级确保工作流量范围。
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公开(公告)号：US08475131B2
公开(公告)日：2013-07-02
申请号：US12623089
申请日：2009-11-20
申请人： Takanori Shibata , Manabu Yagi , Hideo Nishida , Hiromi Kobayashi , Masanori Tanaka , Tetsuya Kuwano
发明人： Takanori Shibata , Manabu Yagi , Hideo Nishida , Hiromi Kobayashi , Masanori Tanaka , Tetsuya Kuwano
IPC分类号： F04D29/38
CPC分类号： F04D29/284 , F04D29/30 , Y10T29/49329
摘要： A centrifugal compressor provided with an impeller which is configured to have a plurality of blades arranged at a predetermined interval in a circumferential direction of a hub rotating together with a rotation shaft, in which a blade angle on a shroud side of the blade distributes to have a minimum value at a position between a leading edge of the blade and a midpoint of a camber line on the shroud side, and a maximum value at a position between the midpoint of the camber line on the shroud side and a trailing edge of the blade, and a blade angle of the blade on a hub side distributes so as to have a maximum value at a position between a leading edge and a midpoint of a camber line on the hub side.
摘要翻译： 一种设置有叶轮的离心式压缩机，其被构造成具有在与旋转轴一起旋转的轮毂的圆周方向上以预定间隔布置的多个叶片，叶片的护罩侧的叶片角度分布在其中， 在叶片的前缘和护罩侧的外倾线的中点之间的位置处的最小值以及护罩侧的外倾线的中点与叶片的后缘之间的位置处的最大值 并且轮毂侧上的叶片的叶片角度分布成在轮毂侧的倾斜线的前缘和中点之间的位置处具有最大值。
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公开(公告)号：US20100028141A1
公开(公告)日：2010-02-04
申请号：US12511743
申请日：2009-07-29
申请人： Hideo NISHIDA , Hiromi Kobayashi , Masanori Tanaka , Tetsuya Kuwano , Toshio Itou , Takanori Shibata , Manabu Yagi
发明人： Hideo NISHIDA , Hiromi Kobayashi , Masanori Tanaka , Tetsuya Kuwano , Toshio Itou , Takanori Shibata , Manabu Yagi
IPC分类号： F04D29/44
CPC分类号： F04D17/122 , F04D29/441 , F04D29/444
摘要： In a multistage centrifugal compressor, a plurality of impellers is attached to the same rotary shaft. Vaned Diffusers and vaneless diffusers are used, as diffusers, for respective compressor stages configuring the compressor. The vaned diffusers are continuously used from the first compressor stage to the middle compressor stage, and the vaneless diffusers are used for the last compressor stage and the previous stage. While high efficiency is maintained at the compressor stages having the vaned diffusers, an operating flow range is secured at the compressor stages having the vaneless diffusers.
摘要翻译： 在多级离心式压缩机中，多个叶轮连接在同一个旋转轴上。 对于构成压缩机的各个压缩机级，使用Vaned扩散器和无叶扩散器作为扩散器。 从第一压缩机阶段到中间压缩机阶段连续使用有叶扩散器，无级扩散器用于最后一个压缩机级和前一级。 在具有带叶片的扩散器的压缩机级保持高效率的情况下，在具有无叶漫射器的压缩机级确保工作流量范围。
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公开(公告)号：US20100129224A1
公开(公告)日：2010-05-27
申请号：US12623089
申请日：2009-11-20
申请人： Takanori SHIBATA , Manabu Yagi , Hideo Nishida , Hiromi Kobayashi , Masanori Tanaka , Tetsuya Kuwano
发明人： Takanori SHIBATA , Manabu Yagi , Hideo Nishida , Hiromi Kobayashi , Masanori Tanaka , Tetsuya Kuwano
CPC分类号： F04D29/284 , F04D29/30 , Y10T29/49329
摘要： A centrifugal compressor provided with an impeller which is configured to have a plurality of blades arranged at a predetermined interval in a circumferential direction of a hub rotating together with a rotation shaft, in which a blade angle on a shroud side of the blade distributes to have a minimum value at a position between a leading edge of the blade and a midpoint of a camber line on the shroud side, and a maximum value at a position between the midpoint of the camber line on the shroud side and a trailing edge of the blade, and a blade angle of the blade on a hub side distributes so as to have a maximum value at a position between a leading edge and a midpoint of a camber line on the hub side.
摘要翻译： 一种设置有叶轮的离心式压缩机，其被构造成具有在与旋转轴一起旋转的轮毂的圆周方向上以预定间隔布置的多个叶片，叶片的护罩侧的叶片角度分布在其中， 在叶片的前缘和护罩侧的外倾线的中点之间的位置处的最小值以及护罩侧的外倾线的中点与叶片的后缘之间的位置处的最大值 并且轮毂侧上的叶片的叶片角度分布成在轮毂侧的倾斜线的前缘和中点之间的位置处具有最大值。
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公开(公告)号：US08616843B2
公开(公告)日：2013-12-31
申请号：US12907126
申请日：2010-10-19
IPC分类号： F04D29/44
CPC分类号： F04D29/444 , F04D17/12 , F04D29/681 , F05D2250/52
摘要： Turbo machinery comprising an impeller and a diffuser positioned on a downstream side of the impeller that a channel wall surface of the diffuser is composed of a pair of a shroud side diffuser plate and a hub side diffuser plate which surface each other and a channel width is formed so as to be increased downstream, characterized in that guide vanes in a circular arc shape lower in height than the channel width are installed in a line of a plurality of vanes on both channel walls of the shroud side diffuser plate and hub side diffuser plate of the diffuser, and a total of vane heights of the two guide vanes at an outlet of the diffuser is set so as to be within a range from 30 to 70% of the channel width at the outlet of the diffuser.
摘要翻译： 涡轮机械包括叶轮和位于叶轮下游侧的扩散器，扩散器的通道壁表面由一对彼此面对并且沟道宽度的护罩侧扩散板和轮毂侧扩散板组成， 形成为向下游侧增加，其特征在于，在所述护罩侧扩散板和轮毂侧扩散板的两个通道壁上的多个叶片的一条线上安装有高于沟道宽度的圆弧形状的导向叶片 的扩散器的出口处的两个导向叶片的叶片高度的总和被设定为在扩散器的出口处的通道宽度的30至70％的范围内。
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公开(公告)号：US20130259644A1
公开(公告)日：2013-10-03
申请号：US13879833
申请日：2011-10-17
IPC分类号： F04D17/12
CPC分类号： F04D17/122 , F04D29/444 , F05D2240/122 , F05D2250/70
摘要： A multi-stage impeller is configured in a multi-stage centrifugal compressor by fixing and attaching a plurality of centrifugal impellers to one rotating shaft. Diffusers and return channels are provided in order downstream from each impeller. The centrifugal impellers, the diffusers and the return channel are housed within a compressor casing. The return channels have a plurality of vanes positioned at intervals from one another in a circumferential direction, and at least two stages are provided. The vane exit angles monotonically increase toward the downstream stage.
摘要翻译： 多级叶轮通过将多个离心式叶轮固定并附接到一个旋转轴上而配置在多级离心式压缩机中。 扩散器和返回通道按每个叶轮的下游顺序设置。 离心式叶轮，扩散器和返回通道容纳在压缩机壳体内。 返回通道具有沿圆周方向彼此间隔设置的多个叶片，并且至少设有两个台阶。 叶片出口角度向下游阶段单调增加。
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公开(公告)号：US20080092515A1
公开(公告)日：2008-04-24
申请号：US10589976
申请日：2004-03-09
CPC分类号： F01D1/08 , F01D5/187 , F01D17/165 , F02C3/00
摘要： A turbine nozzle (2) that, among components constructing a turbine, reaches particularly high temperature is efficiently cooled with a relatively simple structure. A double casing structure in which a turbine casing (7) is provided outside a turbine shell (5) is formed. The turbine casing (7) functions as a flow path (24) for compressed air (20→21) before combustion. The turbine shell (5) covers a turbine nozzle (2) and a radial turbine impeller (3) and forms flow paths (15, 16) for combustion gas (10→11→12→13). The compressed air (21) before combustion flowing in the flow path (24), for compressed air, having air-tightness between itself and the outside air is blown to the turbine nozzle (2) through a through-hole (51) penetrating both wall surfaces of the turbine shell (5). By this, the turbine nozzle (2) is cooled and the compressed air used to cool the turbine nozzle is made to flow toward the turbine impeller (3). As a result, the entire volume of compressed air (20) taken into the turbine contributes to mechanical work for driving the turbine impeller (3).
摘要翻译： 在构成涡轮机的部件达到特别高的温度下的涡轮喷嘴（2）以相对简单的结构被有效地冷却。 形成涡轮壳体（7）外侧的涡轮壳体（5）的双壳体结构。 在燃烧之前，涡轮机壳体（7）用作用于压缩空气（20-> 21）的流动路径（24）。 涡轮壳体（5）覆盖涡轮喷嘴（2）和径向涡轮叶轮（3）并形成用于燃烧气体（10-> 11-> 12-> 13）的流动路径（15,16）。 在流动路径（24）中流动的压缩空气（21）之间的压缩空气（其自身与外部空气之间具有气密性）通过贯穿两者的通孔（51）吹送到涡轮喷嘴（2） 涡轮壳体（5）的壁表面。 由此，涡轮喷嘴（2）被冷却，用于冷却涡轮喷嘴的压缩空气朝向涡轮机叶轮（3）流动。 结果，进入涡轮机的整个体积的压缩空气（20）有助于驱动涡轮叶轮（3）的机械作业。
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公开(公告)号：US07654094B2
公开(公告)日：2010-02-02
申请号：US10589976
申请日：2004-03-09
IPC分类号： F02C6/08
CPC分类号： F01D1/08 , F01D5/187 , F01D17/165 , F02C3/00
摘要： A turbine nozzle (2) that, among components constructing a turbine, reaches particularly high temperature is efficiently cooled with a relatively simple structure. A double casing structure in which a turbine casing (7) is provided outside a turbine shell (5) is formed. The turbine casing (7) functions as a flow path (24) for compressed air (20→21) before combustion. The turbine shell (5) covers a turbine nozzle (2) and a radial turbine impeller (3) and forms flow paths (15, 16) for combustion gas (10→11→12→13). The compressed air (21) before combustion flowing in the flow path (24), for compressed air, having air-tightness between itself and the outside air is blown to the turbine nozzle (2) through a through-hole (51) penetrating both wall surfaces of the turbine shell (5) so that the turbine nozzle (2) is evenly cooled and the compressed air used to cool the turbine nozzle is made to flow toward the turbine impeller (3).
摘要翻译： 在构成涡轮机的部件达到特别高的温度下的涡轮喷嘴（2）以相对简单的结构被有效地冷却。 形成涡轮壳体（7）外侧的涡轮壳体（5）的双壳体结构。 在燃烧之前，涡轮机壳体（7）用作用于压缩空气（20-> 21）的流动路径（24）。 涡轮壳体（5）覆盖涡轮喷嘴（2）和径向涡轮叶轮（3）并形成用于燃烧气体（10-> 11-> 12-> 13）的流动路径（15,16）。 在流动路径（24）中流动的压缩空气（21）之间的压缩空气（其自身与外部空气之间具有气密性）通过贯穿两者的通孔（51）吹送到涡轮喷嘴（2） 涡轮壳体（5）的壁表面，使得涡轮喷嘴（2）被均匀地冷却，并且使用于冷却涡轮喷嘴的压缩空气流向涡轮机叶轮（3）。
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