| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 221 | Apparatus and method for controlling a compressor | US12261151 | 2008-10-30 | US08096756B2 | 2012-01-17 | Huu Duc Vo |
| A compressor comprises a casing having an inner surface surrounding a rotor assembly, the rotor assembly having a plurality of circumferentially spaced radially outwardly extending rotor blades, each blade having leading and trailing edges and a tip, the compressor further comprising at least one plasma actuator for suppressing rotating stall inception of the compressor, the at least one plasma actuator being mounted adjacent to the blade tips. | ||||||
| 222 | Centrifugal fluid machine | JP2006075876 | 2006-03-20 | JP2007247621A | 2007-09-27 | MIURA HARUO; NISHIDA HIDEO |
| PROBLEM TO BE SOLVED: To prevent rotating stall in a centrifugal compressor for small flow rate high pressure usage. SOLUTION: In the centrifugal compressor 100, a centrifugal impeller 3 is attached on a rotary shaft 2. A diffuser 8 part including vanes 13 between opposing two wall surfaces is formed in a downstream side of the centrifugal impeller. Many curved minute grooves 21 are formed on at least one of the opposing two surfaces with keeping intervals in a circumference direction. Depth of the curved grooves is preferably set to depth equivalent to thickness of a boundary layer growing between the opposing two wall surfaces. COPYRIGHT: (C)2007,JPO&INPIT | ||||||
| 223 | CENTRIFUGAL COMPRESSOR | EP13887157.9 | 2013-06-20 | EP3012461A1 | 2016-04-27 | YAMASHITA, Shuichi |
Provided is a centrifugal compressor in which a malfunction such as shaft vibration due to rotating stall is suppressed, and degradation of performance due to friction losses or the like is suppressed. In a centrifugal compressor (10) including a diffuser section (15) for circulating fluid discharged from an impeller (13), a flow path width W2 of the diffuser section (15) at an inflow position where the fluid flows in the diffuser section (15) is narrower than a flow path width W1 of the impeller (13) at a discharge position where the fluid is discharged from the impeller (13), and a flow path width enlarged section (15c) wider than the flow path width W1 of diffuser section (15) at the inflow position is provided on a downstream side with respect to the inflow position of the diffuser section (15). |
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| 224 | Turbo machine restraining blade inlet re-circulating flow and blade rotating stall | JP11750099 | 1999-04-26 | JP2000303995A | 2000-10-31 | KUROKAWA JUNICHI |
| PROBLEM TO BE SOLVED: To restrain blade inlet re-circulating flow and blade rotating stall so as to prevent lowering of efficiency by forming a passage for connecting a low flow re-circulating flow occurrence place of the blade inlet side and the area of the inner surface of a casing where the blade exists in the direction of gradient of fluid pressure on the inner surface of the casing. SOLUTION: A diagonal flow pump has a suction casing 11, a pump 12 and a diffuser 13 arranged from the upstream toward the downstream, and a blade 122 of the pump 2 is driven in rotation, thereby applying energy to a liquid sucked from the suction casing 11 to be discharged from a discharge opening. At this time, a shallow groove 124 is formed in the direction of fluid pressure gradient extending from the middle (a) of the blade 122 of the inner surface of the casing 12 to a position (b) where at the time of a low flow, a re- circulating flow occurs. Thus, the fluid increased in pressure is let flow backward from the position (a) to the position (b) in the groove 124 by the blade 122, whereby the fluid is jetted to the place of occurrence of a re-circulating flow caused at the time of a low flow to prevent the occurrence of a re- circulating flow and blade rotating stall. COPYRIGHT: (C)2000,JPO | ||||||
| 225 | Fan | JP2603682 | 1982-02-22 | JPS58144693A | 1983-08-29 | SHIMOIDE SHINICHI; TERASAKA HIDETOSHI |
| PURPOSE:To prevent the operating point of a fan from being entered into a super low-frequency sound generating area and preclude an environmental noise pollution by a method wherein a sensor detecting amount of information with respect to whirling stall is provided in a casing or a pipeline and the opening degree of a discharging damper as well as the revolving number of the fan are controlled by the output of the sensor. CONSTITUTION:Flow amount in a duct 9 is detected by a flow sensor 7 to input the output thereof into a control unit 8. At the same time, the amount of information or noise, pressure vibration, speed fluctuation and the like with respect to the whirling stall of the fan 1 is detected by the sensor 10 and the output thereof is inputted into the control unit 8. The output of the control unit 8 is inputted into the discharging damper 2 by feedback to control the opening degree of the damper 2. In this case, the discharging damper 2 is closed in such a manner that the amount of airflow is changed along a high-revolution curve H from large to small and when the operating point of the fan has arrived at the operating point A immediately before generating the super low-frequency sound, the revolving number of the fan is reduced so that the operating point of the fan is brought to the point C on a low revolution curve L. By opening the discharging damper 2 in such a manner that the amount of airflow is changed from small to large, the operating point of the fan may be prevented from being entered into the super low-frequency sound generating area D. | ||||||
| 226 | Rotating stall prevention system for compressor | EP93118140.8 | 1993-11-09 | EP0597440A1 | 1994-05-18 | Ishii, Hiroshi, C-203, Green Avenue; Sasada, Tetsuo; Kasahara, Masayuki; Katoh, Yasuhiro, 243, Nikken Moriyama; Kashiwabara, Yasushige |
A compressor has inlet guide vanes 6, rotor blades 9 and stator blades 7, and comprises further baffle vanes 5 installed upstream of said inlet guide vanes 6 and capable of varying their attached angles, actuators 11 to vary the attached angles of said baffle vanes 5, sensors 12 installed in the upstream side of said baffle vanes 5 to detect a rotating stall condition inside the flow passage of the compressor, and control means 13 to receive signals from said sensors 12 and to output control signals to said actuators 11 to operate said baffle vanes 5 so as to prevent the rotating stall condition. |
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| 227 | 流体機械のディフューザ構造 | JP2015151406 | 2015-07-31 | JP2015187451A | 2015-10-29 | 深尾 伸次; 佐野 岳志; 飯野 真成; 川根 浩; 若井 宗弥 |
| 【課題】低流量特性を簡単な構造変更で効果的に改善することができると共に旋回失速の抑制や衝突損失の低減も併せて図ることができる流体機械のディフューザ構造を提供する。 【解決手段】偶数枚の翼11を等ピッチで有したポンプ等のディフューザ12において、 前記各翼11の少なくとも前縁部の翼厚を交互に変化させ、前記各翼11の前縁および後縁を流体の流れ方向においてそれぞれ等しい位置とした。 【選択図】図1 |
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| 228 | Rotating machine | JP2012276161 | 2012-12-18 | JP2014118916A | 2014-06-30 | IWAKIRI KENICHIRO; FUKABORI TAKUYA; URESHINO AYAKO; MIYATA YASUYUKI |
| PROBLEM TO BE SOLVED: To further surely suppress a rotating stall, and to enlarge a working area.SOLUTION: This rotating machine comprises: a cylindrical casing 20; a rotating shaft 10 rotatably arranged in the casing 20; a plurality of vanes 12 which are arranged in a flow passage 29 between the rotating shaft 10 and the casing 20 in the circumferential direction around the rotating shaft 10; and a suppression part 40A which is arranged at the internal peripheral face 20a of the casing 20 or the external peripheral face of the rotating shaft 10 at the upstream side of the flow direction of a fluid in the flow passage 29 rather than front edges 12a of the vanes 12 so as to be relatively rotatable with respect to the vanes 12, and suppresses the growth of a swirl formed in the vicinity of the front edges 12a of the vanes 12. | ||||||
| 229 | Axial diffuser and method for running centrifugal pump provided with axial diffuser | JP6437893 | 1993-03-23 | JPH06101695A | 1994-04-12 | OGAWA MOTOYASU |
| PURPOSE: To provide an axial diffuser provided with a vane inlet angle for surely easily preventing rotating stall and a method for running a centrifugal pump provided with the axial diffuser. CONSTITUTION: An inlet angle βG of a vane 16 of an axial diffuser is set such that an angular difference (βG-αG=θ) between the inlet angle βG and an inflow angle αG of handled liquid to the vane 16 is a specified angle or less to be determined by the kind of the handled liquid. COPYRIGHT: (C)1994,JPO&Japio | ||||||
| 230 | Axial compressor | JP2312591 | 1991-02-18 | JPH04262100A | 1992-09-17 | TSUDA YOSHIHIRO |
| PURPOSE: To provide an axial compressor which can simply and surely prevent a rotating stall occurring near the surge limit with a high pressure ratio. CONSTITUTION: Rib-shaped guide plates 6 with a shape following the inter-blade flow direction are provided on the inner face of a casing 1 between a train of stator blades 3 fitted on the inner face of the casing 1 in the circular passage of an industrial axial compressor or for a gas turbine. Not only the stream flowing between the stator blades 3 but also the stream flowing into a train of rotor blades 4 are corrected by the rectifying effect of the casing 1 provided with the guide plates 6, thus a rotating stall can be prevented. COPYRIGHT: (C)1992,JPO&Japio | ||||||
| 231 | COMPRESSOR MONITORING METHOD | US14924042 | 2015-10-27 | US20160130974A1 | 2016-05-12 | David Andre ELYSEE |
| A method of predicting the condition of a compressor with respect to rotating stall is disclosed. The method comprises the steps of: i) comparing the difference between the largest and smallest values of a variable occurring during a time period with a difference threshold, the variable at any given time being dependent on the compressor exit pressure at that time, and ii) predicting either that the compressor is in rotating stall or that the compressor is not in rotating stall in dependence upon the result of the comparison. | ||||||
| 232 | Method and device for detecting a rotational separation adversely affecting a turbine engine compressor | US13808992 | 2011-07-04 | US09134198B2 | 2015-09-15 | Cedrik Djelassi |
| A method and device detecting a rotating stall affecting a turbine engine compressor. The detection method includes: detecting an abnormal acceleration of the engine or an operating line of the compressor that is characteristic of a failure of the engine; storing a reference temperature measured at an outlet from a turbine of the engine at an instant of detection; comparing a determined temperature threshold with the difference between a current temperature at the outlet of the turbine as measured after detection and the reference temperature; and identifying that a rotating stall is present in event of the threshold being exceeded. | ||||||
| 233 | METHOD AND DEVICE FOR DETECTING A ROTATIONAL SEPARATION ADVERSELY AFFECTING A TURBINE ENGINE COMPRESSOR | US13808992 | 2011-07-04 | US20130186191A1 | 2013-07-25 | Cedrik Djelassi |
| A method and device detecting a rotating stall affecting a turbine engine compressor. The detection method includes: detecting an abnormal acceleration of the engine or an operating line of the compressor that is characteristic of a failure of the engine; storing a reference temperature measured at an outlet from a turbine of the engine at an instant of detection; comparing a determined temperature threshold with the difference between a current temperature at the outlet of the turbine as measured after detection and the reference temperature; and identifying that a rotating stall is present in event of the threshold being exceeded. | ||||||
| 234 | VIBRATION METHOD TO DETECT ONSET OF GAS LOCK | US13270555 | 2011-10-11 | US20120027630A1 | 2012-02-02 | Michael A. Forsberg; Ketankumar K. Sheth; Brown Lyle Wilson; Donn J. Brown; Dehao David Zhu |
| Vibration of an electric submersible pump assembly is monitored to produce a vibration spectrum. The vibration spectrum is compared to a known vibration signature for a pump condition that precedes gas lock. The pump condition is at least one of an impeller rotating stall condition, a diffuser stall condition, a pre-surge condition, and percentage of free gas within the wellbore fluid. Operation of the pump is then adjusted in response to the similarity of the vibration spectrum to the vibration signature for the pump condition to prevent impending gas lock. | ||||||
| 235 | APPARATUS AND METHOD FOR CONTROLLING A COMPRESSOR | US12261151 | 2008-10-30 | US20100040453A1 | 2010-02-18 | Huu Duc VO |
| A compressor comprises a casing having an inner surface surrounding a rotor assembly, the rotor assembly having a plurality of circumferentially spaced radially outwardly extending rotor blades, each blade having leading and trailing edges and a tip, the compressor further comprising at least one plasma actuator for suppressing rotating stall inception of the compressor, the at least one plasma actuator being mounted adjacent to the blade tips. | ||||||
| 236 | METHOD OF OPERATING A GAS TURBINE POWER PLANT | US12238770 | 2008-09-26 | US20090071165A1 | 2009-03-19 | Charles Matz; Bernhard Erb; Bikas Das Burma; Luca Beresini; Martin Heinrich Treiber; Peter Marx |
| In a method of operating a gas turbine during shut down, the gas turbine is decelerated and closure of compressor inlet guide vanes (1) is initiated at a shaft speed at least 5% above the shaft speed where a vibration peak occurs. The compressor inlet guide vanes (1) are closed by an angle in the range from 15°-35°, preferably at a rate between 5° and 10° per second. The method effects a reduction of the risk of rotational stall. | ||||||
| 237 | Process for detection of rotating stall | US292577 | 1981-08-13 | US4430855A | 1984-02-14 | Pierre E. Deneux; Patrick J. Faure; Denis R. G. Laffitte; Michel E. M. Lemaoult |
| A process and a device for detecting a rotating stall in a turbojet engine having two rotating spools including a high pressure spool and a low pressure spool, wherein the rotation speed (N.sub.HP, N.sub.BP) of each of said spools is measured, and the derivative relative to time dN.sub.HP /dt of the rotation speed (N.sub.HP) of the high pressure spool is derived. A command signal is generated as soon as the following conditions are met: ##EQU1## where A, B and C are constant values. | ||||||
| 238 | 遠心圧縮機、ターボ冷凍機、過給機、及び遠心圧縮機の制御方法 | JP2014029376 | 2014-02-19 | JP2015151991A | 2015-08-24 | 古賀 淳 |
| 【課題】遠心圧縮機において、旋回失速発生を抑制し、旋回失速による騒音と軸振動を低減する。 【解決手段】軸線回りに回転して、軸方向から流入する流体を径方向外側に向かって排出する羽根車22と、羽根車22に流体を導入する流入流路34と、流入流路34に設けられて、周方向に間隔をあけて複数が配置されて開度が可変とされたインレットガイドベーン43と、羽根車22から排出される流体が流通するディフューザ39と、ディフューザ39の流路断面積を可変とする流路断面積調整装置46と、ディフューザ39に設けられて、周方向に間隔をあけて複数が配置されて角度が可変とされたディフューザベーン55と、インレットガイドベーン43の開度に基づいて流路断面積調整装置46により流路断面積、及びディフューザベーン55の角度を変化させる制御装置と、を備える遠心圧縮機2を提供する。 【選択図】図2 |
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| 239 | Centrifugal fan | JP29339695 | 1995-10-17 | JPH09112488A | 1997-05-02 | ARIMURA HISATO |
| PROBLEM TO BE SOLVED: To prevent an impeller from suffering from its rotational stall together with prevention of a resultant pressure variation so as to enable an eccentric fan to make its stabilized running, by providing a bypass hole in a bulkhead for partitioning a suction casing from a discharge casing and forcing a bypass damper for opening/closing this bypass hole to make linking connection to a suction damper. SOLUTION: An eccentric fan has its rotary shaft 8 driven by means of a motor 9 and air is sucked in an impeller 3 through a suction damper 1 and a suction casing 2 following the rotation of the impeller 3 and after being increased in its pressure, ejected from a discharge casing 4. In this case, a bypass hole 10 is formed in a bulkhead 6 for partitioning a suction casing 2 from a discharge casing 4 so as to open/close this hole 10 by means of a bypass damper 5. The bypass damper 5 is placed in its linking connection to one of the blades of the suction damper 1 through one link and fully opened when the suction damper 1 is fully closed and when the opening degree of the suction damper 1 becomes about 20%, it is fully closed so as to effectively prevent the rotational stall of the impeller from taking place. COPYRIGHT: (C)1997,JPO | ||||||
| 240 | Devices and methods of operation thereof for providing stable flow for centrifugal compressors | US10856361 | 2004-05-25 | US07326027B1 | 2008-02-05 | Gary J. Skoch; Mark A. Stevens; Thomas A. Jett |
| Centrifugal compressor flow stabilizing devices and methods of operation thereof are disclosed that act upon the flow field discharging from the impeller of a centrifugal compressor and modify the flow field ahead of the diffuser vanes such that flow conditions contributing to rotating stall and surge are reduced or even eliminated. In some embodiments, shaped rods and methods of operation thereof are disclosed, whereas in other embodiments reverse-tangent air injection devices and methods are disclosed. | ||||||
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