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1. 发明专利

JPH10239593A FIXING MECHANISM FOR INSPECTING DEVICE 失效
公开(公告)号：JPH10239593A
公开(公告)日：1998-09-11
申请号：JP4339797
申请日：1997-02-27
申请人： HITACHI LTD , TOKYO ELECTRIC POWER CO , HITACHI ENG SERVICE
发明人： TAN TOSHIMI , KANEKO RYOICHI , KANDA NARIO , KOJIMA YOSHIO , ARAKI SHINJI , MINO SHINJI
IPC分类号： G02B23/24
摘要： PROBLEM TO BE SOLVED: To provide a fixing mechanism for an inspecting device not restricted by the shape, surface state, and material of an object to be fixed, preventing the expansion of a pinhole if it happens to occur, capable of smoothly inserting or recovering the inspecting device into or form an object to be inspected, and having a structure and shape capable of holding and surely fixing the inspecting device at a prescribed center position. SOLUTION: A balloon 1 made of a composite film laminated with a meshy reinforcing sheet between elastic body sheets and having three or five legs 2 for fixing an inspecting device 20 in contact with an object to be fixed 30 is fitted near the tip of the inspecting device 20. The balloon 1 can surely fix the inspecting device 20 without being restricted by the shape, surface state, and material in the object to be fixed 30. A rupture is prevented by the meshy reinforcing sheet of the composite film, and the fixing function of the balloon 1 can be maintained when the air of the leak quantity or above is supplied in a case a pinhole occurs.

2. 发明专利

JPH10196301A COMBINED POWER GENERATION PLANT 失效
公开(公告)号：JPH10196301A
公开(公告)日：1998-07-28
申请号：JP2567398
申请日：1998-02-06
申请人： HITACHI LTD
发明人： SHIGA MASAO , FUKUI HIROSHI , MAENO YOSHIMI , TAKAHASHI SHINTARO , KURIYAMA MITSUO , SUWA MASATERU , KANEKO RYOICHI , TAN TOSHIMI , ONODA TAKESHI , WATANABE YASUO , KAJIWARA HIDEFUMI , HIRAGA MAKOTO
IPC分类号： F01D5/06 , C22C38/00 , C22C38/46 , C22C38/48 , F01K7/22 , F01K23/10 , F01K23/16
摘要： PROBLEM TO BE SOLVED: To attain high output and high heat efficiency in a small type by setting a steam inlet temperature to an initial stage blade of a steam turbine of a combined power generation plant not less than a specific temperature, and specifying a blade part length of a low pressure side final stage blade. SOLUTION: A combined power generation plant has a high-low pressure integrated steam turbine, a gas turbine and a generator, and the steam turbine has a rotor implanted in a multistage shape over a low pressure side final stage blade from a high pressure side initial stage blade of steam in a rotor shaft 3, a bearing 12 to support the high pressure side and the low pressure side of the rotor and a casing 6 having a stationary blade 7 implanted in a position corresponding to the blade so as to cover the rotor. In this case, a steam inlet temperature to the initial stage blade is set not less than 530 deg.C, and a blade part length of the low pressure side final stage blade is set not less than 30 inches. The steam turbine is also formed so that the ratio of a length between its rotor shaft bearings to a blade diameter between the final stage blade tips falls within a range of 1.4 to 2.3.

3. 发明专利

JPH0658911A METHOD AND DEVICE FOR PREDICTING LIFE OF HIGH-TEMPERATURE EQUIPMENT BY MAGNETIC AE 失效
公开(公告)号：JPH0658911A
公开(公告)日：1994-03-04
申请号：JP20884692
申请日：1992-08-05
申请人： HITACHI LTD , HITACHI ENG SERVICE
发明人： SATO KAZUYA , YONEYAMA TAKAO , SUKEGAWA MASAYUKI , FUKUI HIROSHI , YANAGIBASHI MINORU , TAN TOSHIMI , ARAYA NOBORU
IPC分类号： G01N3/32 , G01N27/72 , G01N29/14
摘要： PURPOSE:To enable a turbine structure to be exchanged before breakdown by diagnosing its remaining life accurately. CONSTITUTION:The correlation relationship between the magnetic AE characteristic value and the degree of creep damage by previously performing a creep test with a same material test piece as that of a turbine structure which is manufactured by a magnetic metal, thus obtaining the magnetic AE characteristic value of the turbine structure to be measured. The degree of creep damage is obtained from the magnetic AE characteristic value and the correlation relationship and the remaining life of the turbine structure to be measured is diagnosed from the degree of creep damage. With the correlation relationship between the magnetic AE characteristic value and the degree of creep damage. the change in the magnetic AE characteristic value increases as the degree of creep damage to be measured approaches '1' indicating rupture, thus predicting the remaining life at the latter period of the life accurately.

4. 发明专利

JPH0223209A REMAINING LIFE ASSESSING METHOD FOR HIGH TEMPERATURE APPARATUS AND DEVICE THEREFOR 失效
公开(公告)号：JPH0223209A
公开(公告)日：1990-01-25
申请号：JP17275288
申请日：1988-07-13
申请人： HITACHI LTD
发明人： SAKURAI SHIGEO , UMEZAWA SADAO , MIYATA HIROSHI , ISHIZUKI TOSHIO , TAN TOSHIMI
IPC分类号： F01D21/00 , F22B35/00
摘要： PURPOSE:To prevent any accident of a high temperature apparatus, by measuring the displacement and the temperature of a target member of assessment such as a metallic construction or the like to which a repetitive load is applied for a long period under high temperature atmosphere, and assessing and displaying excess life until generation of cracks thereon from the result of the above measurement. CONSTITUTION:A displacement measuring device 14 is provided so as to measure displacement of a target member of assessment of a power generation plant turbine etc., to which a repetitive load is applied for a long period under high temperature atmosphere, so that the output signal therefrom is inputted into an arithmetic processing control device 17 thought an amplifier 15 and a signal converter 16. A temperature measuring device 20 is also provided so as to measure the temperature of a part to be assessed in the target member of assessment, so that the output signal therefrom is inputted into the arithmetic processing control device 17 through a signal converter 21. Here at, a displacement amount is calculated in form of a notch opening displacement ratio or a notch opening displacement speed, so that the remaining life until generation of cracks thereon generating life of the target member of assessment, and the remaing life until the maximum allowable dimension of crack takes place, are judged by a judging device 19 on the basis of calculation result, while the judged result is displayed on a display device 22.

5. 发明专利

JPS6345483B2 失效
公开(公告)号：JPS6345483B2
公开(公告)日：1988-09-09
申请号：JP5083281
申请日：1981-04-03
申请人： HITACHI LTD
发明人： YOSHIOKA TAKATOSHI , KIRIHARA SEISHIN , SHIGA MASAO , YOSHIDA TAKEHIKO , KUNO KATSUKUNI , TAN TOSHIMI , KOBAYASHI MASAHIRO
IPC分类号： F01D5/06 , F16C3/02

6. 发明专利

JPS63117102A LIFETIME DIAGNOSTIC METHOD FOR CENTRAL HOLE OF STEAM TURBINE ROTOR 失效
公开(公告)号：JPS63117102A
公开(公告)日：1988-05-21
申请号：JP26187186
申请日：1986-11-05
申请人： HITACHI LTD
发明人： TAN TOSHIMI , KANEKO RYOICHI , TAKESHITA TOYOO , SATO KATSUSHIGE , SHIGA MASAO
IPC分类号： F01D5/00 , G01M99/00 , G01N27/04
摘要： PURPOSE:To ensure the synthetical lifetime management of the rotor in the caption by determining the lifetime of a high-temperature part on the basis of the relation between the difference in the electrical resistances of the high- temperature pert and the low-temperature part of the central hole of the turbine rotor, and the lifetime damage degree. CONSTITUTION:A head 4, in which an electrical resistance sensor 5 is contained, is inserted into the central hole 2 of a turbine rotor 1. The head 4 is moved by a feeding device, thereby measuring the electrical resistances of a high- temperature part and a low-temperature part. The lifetime of the high- temperature part can be determined on the basis of the relation between the difference in the electrical residences and the creep damage degree, hence ensuring the synthetical lifetime management of the rotor.

7. 发明专利

JPS59201902A Shrunk wheel type turbine rotor 失效
标题翻译： SHRUNK轮式涡轮转子
公开(公告)号：JPS59201902A
公开(公告)日：1984-11-15
申请号：JP7393783
申请日：1983-04-28
申请人： Hitachi Ltd
发明人： TAN TOSHIMI
IPC分类号： F01D5/06 , F01D5/02
CPC分类号： F01D5/025
摘要： PURPOSE:To prevent the occurrence or progress of a crack in a key groove part through prevention of entrance of steam into a gap between the end faces of the hub parts of shrunk wheels, by a method wherein an expansion plate is mounted in said gap. CONSTITUTION:A large low pressure shrunk wheel, especially the rotor of a steam turbine for atomic power brought into a wet steam state is constituted such that a moving blade 1 is mounted to a wheel 2 which is fitted in a shaft 3. In order to prevent movement, in the direction of rotation, of the wheel 2, a key groove 5 is provided in the wheel 2 and the shaft 3, and an axial key 4 is mounted. Further, an expansion plate mounting groove 7 is machined in a hub part on the outer periphery side of a space between the wheels 2. An expansion plate 8, made of a material having high corrosion resistance, is mounted in the groove 7. This prevents entrance of steam into the key groove 5 through between the wheels 2, and permits prevention of the occurrence of a crack in the key groove 5.
摘要翻译：目的：通过防止蒸汽进入收缩轮的轮毂部分的端面之间的间隙，防止键槽部分的裂纹发生或进展，通过其中膨胀板安装在所述间隙中的方法。构成：将大型低压收缩轮，特别是带有湿蒸汽状态的原子能蒸汽轮机的转子构成为将活动叶片1安装在安装在轴3中的车轮2上。为了防止车轮2的旋转方向的移动，在车轮2和轴3上设置有键槽5，并且安装有轴键4。此外，在车轮2之间的空间的外周侧的轮毂部中加工有膨胀板安装槽7.在槽7中安装有由耐腐蚀性高的材料制成的膨胀板8。通过车轮2将蒸汽进入键槽5，并且允许防止键槽5中出现裂纹。

8. 发明专利

JPS5987202A STRESS CORROSION CRACKING PREVENTING METHOD OF SHRINKAGE FIT WHEEL 失效
公开(公告)号：JPS5987202A
公开(公告)日：1984-05-19
申请号：JP19592582
申请日：1982-11-10
申请人： HITACHI LTD
发明人： TAN TOSHIMI
IPC分类号： F01D5/06 , F01D5/02
摘要： PURPOSE:To prevent a hub section from being broken or scattered by fitting a halved sleeve to the outer periphery of a scraped hub section in a wheel having generated stress corrosion cracking. CONSTITUTION:A wheel 2 having generated stress corrosion cracking is cut with a gas burner, etc., the outer periphery of a hub section 6 is cleanly finished by a lathe work, and a halved sleeve 7 is fitted to it so as not to protrude outward from the outer periphery of the hub section of an adjacent wheel 2. This is required because a pressure adjusting plate (corresponding to a diaphragm) is fitted to the outer periphery of the sleeve 7 and fins are fitted between the plate and the sleeve so that no steam leaks out. Thereby, a centrifugal force is reduced, and even if cracking occurs scattering can be prevented. Since a low pressure turbine rotor for nuclear power is polluted with radioactivity and can not be carried out of a power plate, this method is particularly useful.

9. 发明专利

JPS5923002A Tie-wire connecting structure 失效
标题翻译： TIE-WIRE连接结构
公开(公告)号：JPS5923002A
公开(公告)日：1984-02-06
申请号：JP13128382
申请日：1982-07-29
申请人： Hitachi Ltd
发明人： TAN TOSHIMI , MIZOI TAKAO
IPC分类号： F04D29/38 , F01D5/24
CPC分类号： F01D5/24
摘要： PURPOSE:To improve the reliability of a tie-wire by a method wherein the tie- wire is secured of a predetermined amount of movement by the provision of a specific gap between a hole in a movable wing and the tie-wire so that even when the tie-wire is rusted, the movement thereof is not obstructed. CONSTITUTION:The gap is provided between the hole 5b in the movable wing 3 and the tie-wire 4. This gap is so formed as to satisfy the equation of d1/d2
摘要翻译：目的：通过一种方法来提高扎带的可靠性，其中通过在可移动机翼中的孔和连接线之间提供特定的间隙而将连接线固定在预定量的运动上，使得即使当扎带生锈，其运动不受阻碍。构成：间隙设置在可动翼3中的孔5b和连线4之间。该间隙形成为满足d1 / d2 <= 0.97的方程式，其中d2是孔5b的内径， d1是扎带的外径。利用上述结构，即使当连接线被压缩或生锈时，由于确保了上述适当的间隙，所以其运动不被阻碍。

10. 发明专利

JPS5564104A ROTOR BLADE OF TURBINE 失效
公开(公告)号：JPS5564104A
公开(公告)日：1980-05-14
申请号：JP13791178
申请日：1978-11-10
申请人： HITACHI LTD
发明人： TAN TOSHIMI , KUNO KATSUKUNI , MIZOI TAKAO
IPC分类号： F01D5/14 , F01D5/28
摘要： PURPOSE:To lower the stress caused at the base portion without causing profile loss of the rotor blade, by providing an arrangement for rotor blades of turbine, in which rotor blade is formed with projection in the direction of thickness on the wall surface near the base portion of an erosion-preventive plate located on the side of rotor, so as to increase the cross section of rotor blade at the portion as compared with that of the other portion. CONSTITUTION:In rotor blades 2 of turbine made of titanium alloy steel, which are fixed around the rotor and have an erosion-preventive plate 1 welded (at 4) at its top, projection 7 is formed on the wall surface of rotor blade 2 on the steam inlet side at the base portion of the erosion-preventive plage 1 located on the side of rotor, in the manner that it is projected in the direction of thickness of the blade 1. With such an arrangement, thickness of the plate 1 from the base portion 1a to the top can be made substantially equal to that of rotor blade 2, but thickness (t2) of projection 7 is made larger than that (t1) of plate 1 in the region near the base portion 1a of plate 1, so that cross section of the rotor blade can be increased at the region. Therefore, fairly high stress exerted on the rotor blades can be lowered effectively.

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