公开(公告)号：US08313290B2

公开(公告)日：2012-11-20

申请号：US12488910

申请日：2009-06-22

申请人： Masanori Tanaka ,  Hideo Nishida ,  Hiromi Kobayashi ,  Tetsuya Kuwano ,  Toshio Itou

发明人： Masanori Tanaka ,  Hideo Nishida ,  Hiromi Kobayashi ,  Tetsuya Kuwano ,  Toshio Itou

IPC分类号： F04D29/44

CPC分类号： F04D29/441

摘要： In a high pressure centrifugal compressor, the occurrence of rotating stall noticeable in a comparatively-low specific speed wheel stage is prevented, thereby high efficient fluid performance is obtained and reliability is improved. The centrifugal compressor has a first vaneless diffuser with a constant flow channel height on the downstream side of an impeller, and a second vaneless diffuser in which the flow channel height decreases in a flow direction from an inlet to an outlet on the downstream side of the first vaneless diffuser. These diffusers are combined with an impeller using thick blades.

摘要翻译： 在高压离心式压缩机中，防止了在比较低的特定速度车轮台处显示的转动失速的发生，从而获得了高效率的流体性能，并提高了可靠性。 离心压缩机具有在叶轮的下游侧具有恒定的流动通道高度的第一无叶漫射器和第二无叶漫射器，其中流动通道高度在流动方向上从入口到下游侧的出口减小 第一个无叶漫射器。 这些扩散器与使用厚叶片的叶轮组合。

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。

公开(公告)号：US20090317248A1

公开(公告)日：2009-12-24

申请号：US12488910

申请日：2009-06-22

申请人： Masanori Tanaka ,  Hideo Nishida ,  Hiromi Kobayashi ,  Tetsuya Kuwano ,  Toshio Itou

发明人： Masanori Tanaka ,  Hideo Nishida ,  Hiromi Kobayashi ,  Tetsuya Kuwano ,  Toshio Itou

IPC分类号： F04D29/44

CPC分类号： F04D29/441

摘要： In a high pressure centrifugal compressor, the occurrence of rotating stall noticeable in a comparatively-low specific speed wheel stage is prevented, thereby high efficient fluid performance is obtained and reliability is improved. The centrifugal compressor has a first vaneless diffuser with a constant flow channel height on the downstream side of an impeller, and a second vaneless diffuser in which the flow channel height decreases in a flow direction from an inlet to an outlet on the downstream side of the first vaneless diffuser. These diffusers are combined with an impeller using thick blades.

摘要翻译： 在高压离心式压缩机中，防止了在比较低的特定速度车轮台处显示的转动失速的发生，从而获得了高效率的流体性能，并提高了可靠性。 离心压缩机具有在叶轮的下游侧具有恒定的流动通道高度的第一无叶漫射器和第二无叶漫射器，其中流动通道高度在流动方向上从入口到下游侧的出口减小 第一个无叶漫射器。 这些扩散器与使用厚叶片的叶轮组合。

公开(公告)号：US08481885B2

公开(公告)日：2013-07-09

申请号：US12825549

申请日：2010-06-29

申请人： Takeshi Tsukamoto ,  Hirotsugu Kawanaka ,  Yoshihisa Maeda ,  Shinji Imaoka ,  Tetsuya Kuwano ,  Taiji Hashimoto

发明人： Takeshi Tsukamoto ,  Hirotsugu Kawanaka ,  Yoshihisa Maeda ,  Shinji Imaoka ,  Tetsuya Kuwano ,  Taiji Hashimoto

IPC分类号： B23K26/00

CPC分类号： B23K26/24

摘要： A welding apparatus and a welding method are employed for laser narrow groove welding which performs welding scanning a laser beam in the welding direction while feeding a solid filler metal into a narrow groove. The welding apparatus includes a laser beam irradiation head having a mechanism periodically oscillating an irradiation point of the laser beam with a predetermined amplitude in the bottom of the groove, and a filler metal control device having a solid filler metal feeder feeding the solid filler metal to the molten pool formed in the bottom of the groove by the laser beam and adjusting the feeding position independent of a motion of the laser beam irradiation head so that the tip position of the solid filler metal detected is constantly positioned in the center of the groove.

摘要翻译： 激光窄槽焊接采用焊接装置和焊接方法，在将固体填充金属输送到窄槽中的同时，在焊接方向进行激光束的焊接扫描。 该焊接装置具备激光束照射头，该激光束照射头具有在槽的底部周期性地使激光束的照射点以规定的振幅振荡的机构，以及填充金属控制装置，其具有将固体填充剂金属加入的固体填充金属给料体 熔池通过激光束形成在槽的底部，并且独立于激光束照射头的运动调节进给位置，使得检测到的固体填充金属的尖端位置始终位于槽的中心。

公开(公告)号：US08426766B2

公开(公告)日：2013-04-23

申请号：US12248271

申请日：2008-10-09

申请人： Takeshi Tsukamoto ,  Yoshihisa Maeda ,  Hiromi Kobayashi ,  Hideto Nogiwa ,  Tetsuya Kuwano ,  Ryujiro Udo ,  Masaaki Iwasa

发明人： Takeshi Tsukamoto ,  Yoshihisa Maeda ,  Hiromi Kobayashi ,  Hideto Nogiwa ,  Tetsuya Kuwano ,  Ryujiro Udo ,  Masaaki Iwasa

IPC分类号： B23K26/00

CPC分类号： F04D29/284 ,  B23K26/144 ,  B23K26/244 ,  B23K26/28 ,  B23K33/004 ,  B23K2101/001 ,  F01D5/048 ,  F01D5/3061 ,  F04D29/023 ,  F05D2230/234 ,  Y02T50/673 ,  Y10T29/49316

摘要： A welding method for an impeller having a plurality of blades, a disc and an exterior body including a shroud welded to the plurality of blades, comprising the steps of: a first step for forming a groove having a prescribed depth and a prescribed width toward one of the blades on a surface of the disc or the exterior body, which is opposite to a surface against the blade abuts, emitting laser light toward the bottom of the groove, and performing melt-through bead welding to bond the bottom of the groove to an end of the blade in such a way that a bead formed on the back of the disc or the shroud is curved with an inward depression; and a second step for performing overlaying welding after completion of the first step by supplying a filler metal to a molten zone while the bottom of the groove is scanned with the laser light.

摘要翻译： 一种用于叶轮的焊接方法，所述叶轮具有多个叶片，盘和外部主体，所述叶片和外部主体包括焊接到所述多个叶片的罩体，包括以下步骤：第一步骤，用于形成具有规定深度和规定宽度的槽朝向一个 在与盘片相对的表面上的刀片表面上的刀片邻接，朝向凹槽的底部发射激光，并且进行熔透珠焊接以将槽的底部结合到 叶片的端部以这样的方式使得形成在盘或罩的背面上的胎圈以向内的凹陷弯曲; 以及第二步骤，通过在用激光扫描槽的底部的同时向熔融区域供应填充金属来完成第一步骤之后的覆盖焊接。

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。

公开(公告)号：US20100326969A1

公开(公告)日：2010-12-30

申请号：US12825549

申请日：2010-06-29

申请人： Takeshi TSUKAMOTO ,  Hirotsugu Kawanaka ,  Yoshihisa Maeda ,  Shinji Imaoka ,  Tetsuya Kuwano ,  Taiji Hashimoto

发明人： Takeshi TSUKAMOTO ,  Hirotsugu Kawanaka ,  Yoshihisa Maeda ,  Shinji Imaoka ,  Tetsuya Kuwano ,  Taiji Hashimoto

IPC分类号： B23K26/00

CPC分类号： B23K26/24

摘要： A welding apparatus and a welding method are employed for laser narrow groove welding which performs welding scanning a laser beam in the welding direction while feeding a solid filler metal into a narrow groove. The welding apparatus includes a laser beam irradiation head having a mechanism periodically oscillating an irradiation point of the laser beam with a predetermined amplitude in the bottom of the groove, and a filler metal control device having a solid filler metal feeder feeding the solid filler metal to the molten pool formed in the bottom of the groove by the laser beam and adjusting the feeding position independent of a motion of the laser beam irradiation head so that the tip position of the solid filler metal detected is constantly positioned in the center of the groove.

摘要翻译： 激光窄槽焊接采用焊接装置和焊接方法，在将固体填充金属输送到窄槽中的同时，在焊接方向进行激光束的焊接扫描。 该焊接装置具备激光束照射头，该激光束照射头具有在槽的底部周期性地使激光束的照射点以规定的振幅振荡的机构，以及填充金属控制装置，其具有将固体填充剂金属加入的固体填充金属给料体 熔池通过激光束形成在槽的底部，并且独立于激光束照射头的运动调节进给位置，使得检测到的固体填充金属的尖端位置始终位于槽的中心。

公开(公告)号：US20100270308A1

公开(公告)日：2010-10-28

申请号：US12765111

申请日：2010-04-22

申请人： Tomohiro NARUSE ,  Tetsuya KUWANO ,  Taiji HASHIMOTO ,  Haruo MIURA ,  Mitsuhiro NARITA

发明人： Tomohiro NARUSE ,  Tetsuya KUWANO ,  Taiji HASHIMOTO ,  Haruo MIURA ,  Mitsuhiro NARITA

IPC分类号： B65D45/00

CPC分类号： F04D17/125 ,  F04D29/4206 ,  F04D29/624

摘要： Size reduction of a barrel-type casing using a shear key is aimed for while ensuring a necessary area of a head cover end surface. A shoulder is formed on the axially outer side of the outer circumferential surface of a head cover. The inner surface of a casing is provided with a circumferentially extending groove. Shear key structure includes a first shear key member disposed in the shoulder and the groove, such that at least a portion of its outer circumferential surface is in contact with the inner circumferential surface of the groove, and a second shear key member disposed adjacent to the first shear key member in the groove, the second shear key member having an axially projecting shoulder, its outer circumferential surface being in contact with an inner circumferential surface of the casing. The first and second shear key members are circumferentially segmented respectively into three or more members, and each member is radially fixed to the casing but not axially fastened to each other, to allow slight displacement between the first and second shear key members by a shear force.

摘要翻译： 针对使用剪切键的筒型壳体的尺寸减小是为了确保头罩端面的必要面积而进行的。 肩部形成在头罩的外周面的轴向外侧。 壳体的内表面设置有周向延伸的凹槽。 剪切键结构包括设置在肩部和凹槽中的第一剪切键构件，使得其外圆周表面的至少一部分与凹槽的内圆周表面接触，并且第二剪切键构件邻近 第一剪切键构件在槽中，第二剪切键构件具有轴向突出的肩部，其外周面与壳体的内周面接触。 第一和第二剪切键构件分别周向地分成三个或更多个构件，并且每个构件径向地固定到壳体而不是轴向地彼此紧固，以允许第一和第二剪切键构件之间的剪切力 。

公开(公告)号：US20100034646A1

公开(公告)日：2010-02-11

申请号：US12534407

申请日：2009-08-03

申请人： Yohei MAGARA ,  Kazuyuki YAMAGUCHI ,  Tetsuya KUWANO ,  Haruo MIURA ,  Naohiko TAKAHASHI

发明人： Yohei MAGARA ,  Kazuyuki YAMAGUCHI ,  Tetsuya KUWANO ,  Haruo MIURA ,  Naohiko TAKAHASHI

IPC分类号： F04D29/08

CPC分类号： F04D29/102 ,  F04D29/0516 ,  F16J15/4472

摘要： The present invention provides a centrifugal compressor that inhibits possible leakage while reducing a destabilizing fluid force generated in a seal to prevent the possible instable vibration of a rotor. The centrifugal compressor includes a casing, a rotor rotatably installed in the casing and having an impeller, and seals provided in the clearance between the casing and the rotor to prevent a fluid from leaking through the clearance from a high pressure side to a low pressure side. The rotor rotates to compress gas. For example, the balance piston seal is composed of a damper seal with a plurality of holes and a labyrinth seal with an annular parallel groove; the damper seal and the labyrinth seal are continuously provided. The damper seal is disposed on the high pressure side in a leakage flow direction. The labyrinth seal is disposed on the low pressure side in the leakage flow direction.

摘要翻译： 本发明提供一种离心压缩机，其抑制可能的泄漏，同时减少在密封件中产生的不稳定的流体力，以防止转子可能的不稳定的振动。 离心压缩机包括壳体，可旋转地安装在壳体中并具有叶轮的转子和设置在壳体和转子之间的间隙中的密封件，以防止流体从间隙从高压侧泄漏到低压侧 。 转子旋转以压缩气体。 例如，平衡活塞密封件由具有多个孔的阻尼器密封件和具有环形平行槽的迷宫式密封件组成; 阻尼器密封件和迷宫式密封件被连续地设置。 阻尼器密封件在泄漏流动方向上设置在高压侧。 迷宫式密封件沿泄漏流动方向设置在低压侧。

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。