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31. 发明专利

JPS5857604B2 JPS5857604B2 - 失效
公开(公告)号：JPS5857604B2
公开(公告)日：1983-12-21
申请号：JP5209178
申请日：1978-04-29
申请人： Hitachi Ltd
发明人： TAN TOSHIMI , KUNO KATSUKUNI , MIZOI TAKAO
IPC分类号： F01D5/28

32. 发明专利

JPS57164921A SURFACE HARDENING METHOD FOR STEAM TURBINE BLADE 失效
公开(公告)号：JPS57164921A
公开(公告)日：1982-10-09
申请号：JP4718281
申请日：1981-04-01
申请人： HITACHI LTD
发明人： NAKAE HIDEO , MUROI KATSUMI , HANEDA MITSUAKI , KANAMARU MASATOSHI , TAN TOSHIMI
IPC分类号： F01D5/28 , C21D9/00
摘要： PURPOSE:To form surface hardened layers of high erosion resistance by irradiating plasma jet flames using an inert gas added with nitrogen as a working gas to steam turbine blades consisting of 12% Cr alloy steel. CONSTITUTION:Plasma jet flames 5 are irradiated by using a plasma touch 6 to steam turbine blades made of 12% Cr alloy steel. An inert gas such as Argon added with 30% gaseous nitrogen is used as a working gas and an 100% gaseous nitrogen is used as a shielding gas 4. Plasma arcs are generated by flowing electric current between a nozzle 2 and a tungsten electrodes 1 and plasma jet flames 5 are irradiated to heat the blades 7 without melting the same, whereby the hardened layers of high erosion resistance are formed on the surfaces of the blades 7 in a short time.

33. 发明专利

JPS5794119A ROTOR SHAFT 失效
公开(公告)号：JPS5794119A
公开(公告)日：1982-06-11
申请号：JP17059680
申请日：1980-12-02
申请人： HITACHI LTD
发明人： KOBAYASHI KAZU , KOBAYASHI MASAHIRO , UEDA KAZUHIKO , TSUCHIYA KEIICHI , KUNO KATSUKUNI , TAN TOSHIMI , KIRIHARA SEISHIN , YOSHIOKA TAKATOSHI , SHIGA MASAO
IPC分类号： F16C3/00
摘要： PURPOSE:To prevent a journal part of a solid coupling from being damaged by forming grooves on the journal part, by inserting projections of divided sleeves into the grooves, and by welding up the sleeves. CONSTITUTION:Sleeves 4 divided into two pieces are joined at sleeve fixing grooves 12 and adhered at adhering parts 11. In this case, sleeves 4 are provided with projections 13 in order to simplify the sleeve joining work prior to the sleeve assembly work as well as to absorb the deformation due to welding. The adjustment of fixing keys 14, which is carried out after the jointing in order to absorb minute deformation due to the joint work, imposes tension upon sleeves, which increases the joint force between the sleeve 4 and a rotor 1. TIG welding is used for the jointing method at the jointed parts 11.

34. 发明专利

JPS5741403A Wheels fixed by shrinkage fit 失效
标题翻译： SHRINKAGE FIT固定车轮
公开(公告)号：JPS5741403A
公开(公告)日：1982-03-08
申请号：JP11481180
申请日：1980-08-22
申请人： Hitachi Ltd
发明人： TSUCHIYA KEIICHI , TAN TOSHIMI , USAMI KENICHI , MIZOI TAKAO
IPC分类号： F01D5/06 , F01D5/34
摘要： PURPOSE: To prevent the inside of key-way from cracking caused by stress corrosion or erosion, by providing a clearance groove on a position connected to the key-way position of step in lower stream, so as to release the steam and water drops entering the key-way into the lower stream quickly.
CONSTITUTION: A clearance groove 6 is provided on each step of key-way 5 of a wheel 2 being symmetric with respect to the key-way by 180° around the axis. The key-way 5 and clearance groove 6 of each step are communicated with each other through a clearance groove 7 for cutting work of key-way, while the clearance groove 6 of the former step is connected to the key-way 5 of the next step. When the damp steam shown by arrows enters the key-way 5, it turns its course through the clearance groove 7 for cutting work of key-way and flows into the clearance groove 6 positioned symmetrically by 180° around the axis along the inner surface of wheel 2. Furthermore, the steam enters the key-way 5 of wheel 2 of the second step from the wheel 2 of the first step. Thereby, the damp steam is allowed to escape in the lower stream rapidly without stagnation.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：为了防止由于应力腐蚀或侵蚀引起的钥匙内部的破裂，通过在连接到下游台阶的钥匙位置的位置上设置间隙槽，以便释放蒸汽和水滴进入快速进入下游的关键。构成：在相对于钥匙方向对称180度的车轮2的键5的每个步骤上设置间隙槽6。围绕轴。各步骤的键槽5和间隙槽6通过间隙槽7彼此连通，用于切割键槽的工作，而前一步骤的间隙槽6连接到下一个的键5 步。当箭头所示的潮湿蒸汽进入钥匙方向5时，它通过间隙槽7转动，用于切割钥匙的工作并流入对称地设置180度的间隙槽6。围绕轴线沿着车轮2的内表面。此外，蒸汽从第一级的车轮2进入第二级车轮2的钥匙方向5。因此，允许潮湿蒸汽快速地在下游排出而不停滞。

35. 发明专利

JPS5716330A MEASURING TEST METHOD FOR SECTIONAL TEMPERATURE CHANGE AND HEATING FOR ROTOR BLANK MATERIAL FOR TURBINE 失效
公开(公告)号：JPS5716330A
公开(公告)日：1982-01-27
申请号：JP8917180
申请日：1980-07-02
申请人： HITACHI LTD
发明人： TAN TOSHIMI , MIZOI TAKAO
IPC分类号： F01D5/02 , G01B21/00 , G01M5/00 , G01M15/14
摘要： PURPOSE:To measure an amount of bending produced due to a heating temperature and under a state at an operating time of a turbine, by a method wherein a heating is conducted in a manner to divide a rotor blank material in an axial direction and into a plural number of sections. CONSTITUTION:A rotor blank material 1 is supported at retaining stands 3 through bearing parts 2, and only a drum portion is placed at the inside of a heating furnace 40. Partitions 41 partition the heating furnace 40 such that a heating chamber 42 is situated in the middle, heating chambers 43, 45 are positioned at one side of the heating chamber 42 and heating chambers 44, 46 are located at the other side, and thermocouples are individually mounted in the heating chambers 42-46. Balancing rods 5 are installed at the inside of the heating chambers at bearing parts 2 at the opposite ends of the rotor blank material 1. One end thereof contacts with a bend bearing part, a middle part thereof is supported at a fulcrum, and the other end contacts with a dial indicator. The rotor blank material 1 is turned as it is individually heated in the heating chambers 42-46 in the heating furnace 40 in a manner to sectionally change a temperature. Each balancing rod 5 detects a bending amount at measuring points set at intervals 90 deg. on the circumference at a part where the bending of the rotor blank material 1 is measured, and the amount is measured by means of a dial gauge indicator.

36. 发明专利

JPH05345922A 失效
公开(公告)号：JPH05345922A
公开(公告)日：1993-12-27
申请号：JP17597792
申请日：1992-06-11
申请人： JAPAN STEEL WORKS LTD , HITACHI LTD
发明人： AZUMA TSUKASA , TANAKA YASUHIKO , SHIGA MASAO , FUKUI HIROSHI , TAN TOSHIMI , KANEKO RYOICHI , MORISADA TOKIO
IPC分类号： C21D9/28 , C22C38/00 , C22C38/46 , F01D5/02
摘要： PURPOSE:To increase the size of a turbine rotor by heating a turbine rotor element body composed of a heat resistant steel with specific composition up to specific temp., separately applying hardening under respectively specified conditions, and then performing tempering under specific conditions. CONSTITUTION:A turbine rotor element body is constituted of a heat resistant steel which has a composition consisting of, by weight, 0.15-0.4% C,

37. 发明专利

JPH03242528A METHOD AND SYSTEM FOR DIAGNOSING RESIDUAL LIFE 失效
公开(公告)号：JPH03242528A
公开(公告)日：1991-10-29
申请号：JP3941590
申请日：1990-02-20
申请人： HITACHI LTD
发明人： SAKURAI SHIGEO , TAN TOSHIMI
IPC分类号： G01M99/00 , G01N19/00
摘要： PURPOSE:To achieve a higher reliability of a high temperature member by calculating a residual life based on an addition of a fatigue life consumption, a creep life consumption and a life consumption caused by embrittlement of the high temperature member. CONSTITUTION:A life consumption and a creep life consumption of a high temperature member and a degree of embrittlement are calculated by a life consumption calculating means composed of a CPU 61 and a RAM 62 from respective measured values. In this case, as the respective values are obtained at a fixed location of the high temperature member, there is little environmental change between forms of damages, which enables the evaluation of the forms of damages almost equivalently. Thus, deterioration is determined as caused by a fatigue damage, a creep damage and embrittlement to obtain a residual life of the high temperature member subject to a repeated load allowed for all life consumption attributed to these forms of damages thereby enabling the recognizing of a comprehensive residual life of the high temperature member.

38. 发明专利

JPH037002B2 失效
公开(公告)号：JPH037002B2
公开(公告)日：1991-01-31
申请号：JP1950882
申请日：1982-02-08
申请人： HITACHI LTD
发明人： SHIGA MASAO , KIRIHARA SEISHIN , YOSHIOKA TAKATOSHI , KUNO KATSUKUNI , TAN TOSHIMI , AKUTSU YOJI , KOBAYASHI KAZU
IPC分类号： F01D5/06 , B23P11/02 , C21D9/14 , C21D9/38 , F01D25/16

39. 发明专利

JPH02167443A LIFE EXPECTANCY DIAGNOSTIC DEVICE BY NONDESTRUCTIVE INSPECTION 失效
公开(公告)号：JPH02167443A
公开(公告)日：1990-06-27
申请号：JP32057088
申请日：1988-12-21
申请人： HITACHI LTD
发明人： TAN TOSHIMI , KANEKO RYOICHI , SAKURAI SHIGEO , IIJIMA KATSUKI
IPC分类号： G01M99/00 , F01D21/00 , G01M15/00 , G01M15/04 , G01N3/32 , G01N33/20
摘要： PURPOSE:To diagnose life expectancy automatically through nondestructive inspection by providing an information file, a life consumption arithmetic part, and a life consumption comparator. CONSTITUTION:The information file 1 is provided to store past information to be referred to for diagnosis compactly and securely and the information is read out easily and speedily. Further, the life consumption arithmetic part 4a calculates life consumption as to plural items according to history information and current state information and the life consumption comparator 5 selects the best appropriate life consumption among the items. Consequently, it is known what percent of life is spent, so a life expectancy arithmetic part 4b calculates the life expectancy in consideration of a future operation plan. Its calculated value is displayed by a display and output part 8 and stored in the file 1 and the value is utilized for next-time life expectancy calculation.

40. 发明专利

JPS6480704A REPAIRING METHOD FOR MOVING BLADE 失效
公开(公告)号：JPS6480704A
公开(公告)日：1989-03-27
申请号：JP23719087
申请日：1987-09-24
申请人： HITACHI LTD
发明人： TAN TOSHIMI
IPC分类号： F01D5/24 , B23K9/04
摘要： PURPOSE:To shorten the repairing time by welding a padding for repair after removing cracks generated in a tie-wire hole of a moving blade, and inserting a plug slightly smaller than the hole diameter into the hole. CONSTITUTION:When any crack is generated in a tie-wire hole 2 of a moving blade 1, the crack is removed, and a round bar-shaped assistant plug 5 for welding slightly smaller than the hole diameter of the tie-wire hole is inserted into the hole. Then, a multilayer padding 7 is formed on the area where the crack is removed, using a welding rod 6. The shaping operation is performed by once reaming the tie-wire hole 2. The amount of the padding is thus reduced, and the repairing time can be shortened.

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