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31. 发明专利

JPS5447108A ELECTRIC BLOWER 失效
公开(公告)号：JPS5447108A
公开(公告)日：1979-04-13
申请号：JP11223577
申请日：1977-09-20
申请人： HITACHI LTD
发明人： SEGAWA YORIHIDE , FUJISAWA FUMIO
IPC分类号： F04D29/28 , F04D29/66
摘要： PURPOSE:To easily suppress the tortional vibrations of rotary shafts by forming elastic weight-correcting ring mounting recesses in the circumferential portion of the ends of wings and circumferential portion of discs. CONSTITUTION:This electric blower consists of an electric motor 1, and multi-wing fans 2, 3 of the same construction screwed into both sides of a shaft 4 of a rotor of the electric motor 1. The fans 2, 3 are symmetrically formed with respect to discs 10A, 11A, while the rotary shafts of the fans 2, 3 are symmetrically provided with respect to a core 5 of the rotor. Elastic weight-correcting ring mounting recesses 12, 15 are formed in the circumferential portion of reinforcing rings 6A-9A fixed to the end portions of wings 2a, 3a, and in the circumferential portion of the discs 10a, 11A. After assembling an electric blower, C-shaped elastic weight-correcting rings 13, 16 consisting of spring steel or piano wire of a suitable weight are mounted in the recesses 12, 15 so as to balance tortional vibrations. Thus, the tortional vibrations of the rotray shafts can be suppressed easily.

32. 发明专利

JPS5293901A LOW NOISE BOTH SHAFT END TYPE FAN MOTOR 失效
公开(公告)号：JPS5293901A
公开(公告)日：1977-08-08
申请号：JP888376
申请日：1976-01-31
申请人： HITACHI LTD
发明人： SEGAWA YORIHIDE , FUJISAWA FUMIO
IPC分类号： H02K7/14
摘要： PURPOSE:To make a twisting resonance hard to be induced when a pulsating torque is acting on a rotor by maing a torsional spring constant between a rotor and a disc at a low noise both shaft end type fan motor which drives a multi-vane fan at variable speeds by a thyristor control to have a proper relation.

33. 发明专利

JPS51150711A AN ELECTRIC BLOWER 失效
公开(公告)号：JPS51150711A
公开(公告)日：1976-12-24
申请号：JP7443175
申请日：1975-06-20
申请人： HITACHI LTD
发明人： FUJISAWA FUMIO , SEGAWA YORIHIDE , SAGAWA TAKESHI
IPC分类号： F04D17/06 , F04D17/08 , F04D29/04 , F04D29/05 , F04D29/28 , F04D29/66
摘要： PURPOSE:Preventing occurrence of vibration by converting energy of torsional vibration into friction loss and absorbing it, by taking advantage of relative angle displace between a rotating shaft and a fan when torsional vibration of rotating shaft system including multiblade fan occur.

34. 发明专利

JPS5175867A Kosokukaitenkyofuretome 失效
公开(公告)号：JPS5175867A
公开(公告)日：1976-06-30
申请号：JP14815574
申请日：1974-12-25
申请人： Hitachi Ltd
发明人： FUJISAWA FUMIO , SEGAWA YORIHIDE , SHIGA MOTOHIRO
IPC分类号： B01D59/20 , B04B9/14 , F16F15/02

35. 发明专利

JPS518504A 失效
公开(公告)号：JPS518504A
公开(公告)日：1976-01-23
申请号：JP7825874
申请日：1974-07-10
申请人： HITACHI LTD
发明人： SEGAWA YORIHIDE , FUJISAWA FUMIO , SHIGA MOTOHIRO
IPC分类号： H02K1/18 , H02K1/12 , H02K1/20 , H02K5/04 , H02K5/24

36. 发明专利

JPH04107393A BRANCH PIPING 失效
公开(公告)号：JPH04107393A
公开(公告)日：1992-04-08
申请号：JP22132990
申请日：1990-08-24
申请人： HITACHI LTD
发明人： SEGAWA YORIHIDE , MIZUNO TADASHI , ISHIBASHI YOJI
IPC分类号： F16L41/02
摘要： PURPOSE:To suppress the generation of fluid vibration owing to a strong shear flow and to effectively suppress the generation of resonant vibration by causing a branch part to form a staged piping with a large bore wherein connection is made through a smooth pipe wall having a low curvature. CONSTITUTION:In a branch pipe system 3, a branch part forms a stage piping 3b with a large bore where a straight pipe 3a and a branch pipe 3c are interconnected through a smooth pipe wall having a low curvature. Since the inner wall of the branch part is a smooth curved surface having a low curvature, the length of a flow passage having a strong shear flow is not specified as the non-steady characteristics of a flow. Thus, the frequency of an unstable wave generated due to a strong shear flow is also fluctuated with a time. Owing to the above, even when a flow in the straight pipe 3a is low or high, the generation of strong vibration is suppressed. Further, The generation of resonance is completely prohibited in a way that the length of the staged piping is set to a proper value based on natural vibration of a fluid vibration system in the branch pipe 3c.

37. 发明专利

JPH01148923A INHERENT FREQUENCY METER 失效
公开(公告)号：JPH01148923A
公开(公告)日：1989-06-12
申请号：JP30754487
申请日：1987-12-07
申请人： HITACHI LTD
发明人： SEGAWA YORIHIDE , ARAI TORU , ISHIBASHI YOJI
IPC分类号： G01H11/00 , G01H13/00
摘要： PURPOSE:To obtain the spectrum characteristic of the inherent frequency of a structure and to instantaneously measure one arbitrary inherent frequency, by setting a condition for generating self-excited vibration to the self-excited vibration circuit of a closed circuit containing the structure to operate said circuit. CONSTITUTION:A vibration sensor 2 for detecting the vibration of an object to be measured and an electromagnet exciter 4 for exciting the body 1 to be measured are arranged to the object (1) to be measured (structure) and the vibration sensor 2 is connected to a signal processor 3 constituted by connecting a signal amplifying part 5, a delay circuit part 6, a band filter part 7 and a power amplifying part 8. Herein, when a delay time and a filter width are set so as to satisfy a specific condition, positive work is performed to the object 1 to be measured from the exciter 4 and work load becomes max. to generate self-excited vibration. After inherent frequency is measured, proper band frequency is reset and a delay time is properly set. Whereupon, measurement is continued without changing the set condition to the inherent frequency changing small to obtain an inherent vibration spectrum characteristic and specific inherent frequency can be instantaneously measured.

38. 发明专利

JPS62150133A APPARATUS FOR TESTING ROTATION OF BLADE 失效
公开(公告)号：JPS62150133A
公开(公告)日：1987-07-04
申请号：JP29061385
申请日：1985-12-25
申请人： HITACHI LTD
发明人： SATO KAZUO , SEGAWA YORIHIDE , UMEZAWA SADAO , WADA KATSUO
IPC分类号： G01M7/02 , G01M7/00 , G01M15/00 , G01M15/14
摘要： PURPOSE:To facilitate a vibration test and to contrive to reduce the cost of said test, by a method wherein a magnet is arranged to the stationary structure in the vicinity of a blade and an attraction piece comprising a magnetic body is provided to the blade so as to leave a proper interval from said magnet and impulse like exciting force is applied to the blade during rotation by the attraction force between the magnet and the attraction piece. CONSTITUTION:A rotor consisting of a blade 1 to be tested, a wheel disc 2 and an axle 3 is received in a wheel disc chamber 28 held under vacuum and a magnet device 30 is fixed to the side wall of the wheel disc chamber 28 at the position corresponding to the attraction plate comprising a magnetic body arranged to the blade 1. Because a magnetic circuit is formed between the magnet 32 of the magnet device 30 and the attraction plate 31 of the blade 1 so as to provide a proper interval between both of them, cyclical impulse force is acted on one blade by magnetic attraction force when the blade 1 rotates to vibrate the blade 1. Then, by taking out the output of the strain gauge adhered to the blade 1 by a slip ring 27 while the number of rotations are changed, vibration is measured. By this method, the vibration of the blade at an arbitrary speed becomes possible and cost reduction can be contrived.

39. 发明专利

JPS6152523A Gas turbine combustor 失效
标题翻译：气体涡轮搅拌机
公开(公告)号：JPS6152523A
公开(公告)日：1986-03-15
申请号：JP17329684
申请日：1984-08-22
申请人： Hitachi Ltd
发明人： ISHIBASHI YOJI , SATO ISAO , KURODA MICHIO , UCHIYAMA YOSHIHIRO , WADA KATSUO , IIZUKA NOBUYUKI , KATO FUMIO , SEGAWA YORIHIDE , OMORI TAKASHI , AKATSU SHIGEYUKI
IPC分类号： F02C9/50 , F02C9/28 , F23R3/26
CPC分类号： F23R3/26
摘要： PURPOSE:To make it possible to display an excellent combustion performance and to reduce exhaustion of harmful substances in the entire operation including the ignition for starting the gas turbine and the changeover of the fuel by making variable first- stage combustion air and second-stage combustion air. CONSTITUTION:A combustor 51 is provided on its upstream side with a first stage combustion chamber A and on its downstream side with a second-stage combustion chamber B. The first-stage combustion chamber B is formed by a first-stage combustion cylinder 1 having a plurality of combustion air ports 2 around its peripheral wall and an annular space formed by inserting an inner cylindrical cone 5 on the substantially same axis as the first stage combustion cylinder 1. The second stage combustion chamber B opens a second stage combustion air flowpath consisting of an inner peripheral ring 9, an outer peripheral ring 8 and a turning vane 7, on the outer peripheral side of a donwstream end portion of the first stage combustion cylinder 1, and is formed as a space encircled by a second stage combustion cylinder 12 provided on the outside of the outer peripheral ring 8. A slide ring 16 is moved axially of the burner by a link mechanism whereby it is possible to make variable the variable opening areas of the first and second stages. Hence, while excellently maintaining combustion, the changeover of the combustion can be carried out.
摘要翻译：目的：通过制造可变的第一级燃烧空气和第二级燃烧，可以显示出优异的燃烧性能和减少包括用于启动燃气轮机的点火和燃料转换的整个操作中的有害物质的耗尽空气。构成：燃烧器51在其上游侧设置有第一级燃烧室A，在其下游侧设置有第二级燃烧室B.第一级燃烧室B由具有第一级燃烧室围绕其周壁的多个燃烧空气端口2和通过将内圆柱形锥体5插入在与第一级燃烧气缸1基本相同的轴线上而形成的环形空间。第二级燃烧室B打开第二级燃烧空气流路，其包括在第一级燃烧气缸1的不同侧端部的外周侧设置有内周环9，外周环8和转动叶片7，并且形成为由第二级燃烧筒12包围的空间设置在外周环8的外侧。滑环16通过连杆机构沿燃烧器的轴向移动，由此可以使变量开放第一和第二阶段的区域。因此，在极好地保持燃烧的同时，能够进行燃烧的切换。

40. 发明专利

JPS6134322A Low environmental-pollution type gas turbine 失效
标题翻译：低环境污染类型气体涡轮机
公开(公告)号：JPS6134322A
公开(公告)日：1986-02-18
申请号：JP15519784
申请日：1984-07-27
申请人： Hitachi Ltd
发明人： SATO ISAO , ISHIBASHI YOJI , OMORI TAKASHI , AKATSU SHIGEYUKI , WADA KATSUO , KATO FUMIO , SEGAWA YORIHIDE , UCHIYAMA YOSHIHIRO , KURODA MICHIO
IPC分类号： B01D53/94 , F01N3/00 , F01N3/08 , F02C7/057 , F02C9/18 , F02C9/50
CPC分类号： F02C9/50
摘要： PURPOSE:To improve the efficiency of denitration which is performed by use of catalyst when a gas turbine is operated under low load by reducing quantity of air which flows into a combustor at the time of low load of the gas turbine. CONSTITUTION:In an equipment wherein a denitration catalyst layer 5 is disposed in an exhaust gas passage running from a gas turbine 3, a flow rate controller 9 is provided in an air inflow passage which extends to a compressor 1. Flow rate of air which is to flow into a combustor 2 when the gas turbine 3 is opereted under low load is reduced by sai controller 9. Exhaust gas is restrained from excessive reduction in temperature, whereby improving the denitration effifiency of the catalyst.
摘要翻译：目的：通过在燃气轮机低负载时减少流入燃烧器的空气量，提高燃气轮机在低负载下运行时使用催化剂进行脱硝效率。构成：在从燃气轮机3排出的废气通道中配置有脱硝催化剂层5的设备中，在空气流入通路中设置有流量控制器9，该空气流入通路延伸到压缩机1，当通过控制器9减少燃气轮机3在低负荷下运转时，流入燃烧器2中。排气被抑制在过度的温度降低之下，从而提高催化剂的脱硝效率。

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