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1. 发明专利

JP2002310333A MAINTENANCE TIMING PREDICTION METHOD FOR VALVE AND ITS DEVICE 失效
公开(公告)号：JP2002310333A
公开(公告)日：2002-10-23
申请号：JP2001117594
申请日：2001-04-17
申请人： HITACHI LTD , HITACHI ENG SERVICE
发明人： TAKESHIMA KIKUO , KOIKE MASAHIRO , KUMAGAI MAKOTO , MATSUNAGA MASAMI
IPC分类号： F16K27/00 , F16J15/00 , F16K37/00
摘要： PROBLEM TO BE SOLVED: To properly set a valve maintenance timing without being bound dominantly by a gasket exchanging cycle. SOLUTION: The distortion of a valve cover 2 subjected to distortion by reaction given from a gasket 6 mounted on a valve is detected by a distortion sensor 4, the bearing pressure of the gasket 6 is found from the detection value by a gasket bearing pressure conversion part 53, a gasket exchanging timing is predicted from the degree of deterioration of the gasket 6 corresponding to the found bearing pressure by a gasket exchanging cycle prediction part, and an inspection timing which may come soon out of the predicted exchanging timing for the gasket and inspection timings for other valve structural parts are found by a valve maintenance timing prediction part 55 and displayed as the next inspection timing on a display part 56.

2. 发明专利

JP2009031311A Eddy current flaw detection method 审中-公开
标题翻译： EDDY电流检测方法
公开(公告)号：JP2009031311A
公开(公告)日：2009-02-12
申请号：JP2008287411
申请日：2008-11-10
申请人： Hitachi Engineering & Services Co Ltd , Hitachi Ltd , 株式会社日立エンジニアリング・アンド・サービス , 株式会社日立製作所
发明人： SUZUKI YUTAKA , KOIKE MASAHIRO , MATSUI TETSUYA , KODAIRA KOJIRO , ISAKA KATSUMI , ODAKURA MITSURU , TAYAMA KENJI , SUZUKI KAZUHIRO , KUMASAKA KENJI , ADACHI YUJI
IPC分类号： G01N27/90
摘要： PROBLEM TO BE SOLVED: To provide an eddy current flaw detection method capable of reducing time required for eddy current flaw detection.
SOLUTION: Eddy current flaw detection of disc fork parts and wing fork parts of a rotor of a steam turbine that uses eddy current flaw detection device is explained. Fork pins are removed from a disc of the rotor extracted from a turbine casing (step 40). Support rods are respectively inserted into two of a plurality of hole parts of the disc in which the fork pins were inserted. Eddy current flaw detection probes of a sensor part supported to the respective support rods are inserted into the other hole parts of the disc (step 42). Zero-point adjustment of the probes is carried out, in parts other than the seams of the respective forks of the wing fork parts adjacent to each other (step 43). After completion of the zero-point adjustment, the probes are rotated and run, and eddy current flaw detection in the hole parts is executed (step 44). The presence of cracks in the hole parts is determined based on the flaw detection result (step 45).
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供能够减少涡流探伤所需时间的涡流探伤方法。解决方案：解释了使用涡流探伤装置的蒸汽轮机的转子的圆盘叉部件和翼叉部分的涡流探伤。将叉销从从涡轮机壳体抽出的转子的盘上移除（步骤40）。支撑杆分别插入到其中插入叉销的盘的多个孔部分中的两个中。支撑在各个支撑杆上的传感器部件的涡流探伤探针被插入盘的其它孔部分（步骤42）。在除了彼此相邻的翼叉部分的相应叉的接缝之外的部分中进行探针的零点调整（步骤43）。零点调整完成后，探头旋转运行，并执行孔部分的涡流探伤（步骤44）。基于缺陷检测结果确定孔部分中的裂纹的存在（步骤45）。版权所有（C）2009，JPO＆INPIT

3. 发明专利

JP2008122350A Ultrasonic flaw detector and method 审中-公开
标题翻译：超声波检测器及方法
公开(公告)号：JP2008122350A
公开(公告)日：2008-05-29
申请号：JP2006309786
申请日：2006-11-16
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SUZUKI YUTAKA , KOIKE MASAHIRO , SHIMAZAKI YASUSHI
IPC分类号： G01N29/04
CPC分类号： G01N2291/02827
摘要： PROBLEM TO BE SOLVED: To provide an ultrasonic flaw detector and a method, capable of improving the detection probability of closure defects.
SOLUTION: The ultrasonic flaw detector 2 carries out flaw detection, by using an ultrasonic sensor 3 arranged at an object to be inspected 30. A cooling element 4 for cooling the object to be inspected 30 and a plurality of heating elements 5 (5A1, 5A2, 5B1 and 5B2) for heating the object to be inspected are provided. A personal computer 1 heats the object to be inspected 30 by using an arbitrary heating element among the plurality of heating elements 5, while controlling the cooling element 4 and monitoring an ultrasonic flaw detection signal, to thereby control the thermal stress distribution generated in defects.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够提高闭合缺陷的检测概率的超声波探伤仪和方法。解决方案：超声波探伤器2通过使用布置在待检查对象30处的超声波传感器3进行探伤。用于冷却被检查物体30的冷却元件4和多个加热元件5（ 5A1,5A2,5B1,5B2），用于加热被检查物体。个人计算机1通过使用多个加热元件5中的任意加热元件加热待检查物体30，同时控制冷却元件4并监视超声波探伤信号，从而控制缺陷中产生的热应力分布。版权所有（C）2008，JPO＆INPIT

4. 发明专利

JP2008046069A Eddy current flaw detection technique and system 有权
标题翻译： EDDY电流检测技术和系统
公开(公告)号：JP2008046069A
公开(公告)日：2008-02-28
申请号：JP2006224030
申请日：2006-08-21
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NARUSHIGE MASASHI , NISHIMIZU AKIRA , KOIKE MASAHIRO , MATSUI TETSUYA , SASAKI MASATO
IPC分类号： G01N27/90
摘要： PROBLEM TO BE SOLVED: To provide an eddy current flaw detection technique and eddy current flaw detection system capable of enhancing S/N ratio while inhibiting noise of edge.
SOLUTION: The eddy current flaw detection probe 10 consists of two coils 10A and 10B of same shape prepared so as to row their central axis parallel mutually. A switching box 50 applies exciting voltage to one of the two coils and switches to apply exciting voltage to the other coil. A computer 40 applies exciting voltage to one of the two coils and acquires a first flaw detection signal by setting another coil as an detection coil and furthermore apples exciting voltage to another coil and acquires a second flaw detection signal by setting one coil as a detection coil to obtain the difference signal between the aforementioned first flaw detection signal and the aforementioned second flaw detection signal.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供能够在抑制边缘噪声的同时提高S / N比的涡流探伤技术和涡流探伤系统。解决方案：涡流探伤探头10由相同形状的两个线圈10A和10B组成，以便相互平行地排列它们的中心轴线。开关盒50将激励电压施加到两个线圈中的一个和开关以向另一个线圈施加激励电压。计算机40对两个线圈中的一个施加激励电压，并且通过设定另一个线圈作为检测线圈来获取第一缺陷检测信号，并且通过将一个线圈设置为检测线圈，再次向另一个线圈施加激励电压并获取第二探伤信号以获得上述第一探伤信号和上述第二探伤信号之间的差分信号。版权所有（C）2008，JPO＆INPIT

5. 发明专利

JP2007263946A Sensor and method for eddy current flaw detection 有权
标题翻译：用于EDDY电流检测的传感器和方法
公开(公告)号：JP2007263946A
公开(公告)日：2007-10-11
申请号：JP2007003694
申请日：2007-01-11
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NARUSHIGE MASASHI , NISHIMIZU AKIRA , KOIKE MASAHIRO , ABE YOSHIHARU , NARUMI YUICHI , OUCHI HIROFUMI
IPC分类号： G01N27/90
CPC分类号： G01N27/902
摘要： PROBLEM TO BE SOLVED: To provide an eddy current flaw detection sensor, capable of high-sensitivity detection of cracks in the circumferential directions, which occur in a deformed part of a heat exchanger tube or in its peripheral part.
SOLUTION: Two exciting coils 1a and 1b make an eddy current B flow in the axial direction of a tubular body 31 to be inspected. A detection coil 2, arranged between the two exciting coils 1a and 1b, detects a bypass eddy current D bypassing a circumferential crack E and flowing in the circumferential direction of the tubular body 31. The coil axes of the exciting coils 1a and 1b are oriented in the radial directions of a cylindrical protective member 3, and the coil axis of the detection coil 2 is oriented in the axial direction of the cylindrical protective member 3.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种涡流探伤传感器，其能够在热交换器管的变形部分或其周边部分中发生的周向上的裂纹的高灵敏度检测。解决方案：两个励磁线圈1a和1b在管状体31的轴向上形成涡流B流动以进行检查。布置在两个励磁线圈1a和1b之间的检测线圈2检测绕过周向裂纹E并在管状体31的圆周方向上流动的旁路涡流D.励磁线圈1a和1b的线圈轴线定向在圆筒形保护构件3的径向方向上，检测线圈2的线圈轴线在圆筒形保护构件3的轴向方向上定向。（C）2008，JPO＆INPIT

6. 发明专利

JP2007003537A Piping inspection method and device 有权
标题翻译：管道检查方法和装置
公开(公告)号：JP2007003537A
公开(公告)日：2007-01-11
申请号：JP2006226683
申请日：2006-08-23
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAGASHIMA YOSHIAKI , KOIKE MASAHIRO
IPC分类号： G01B17/02 , G01N29/00 , G01N29/04
CPC分类号： G01N29/069 , G01N2291/02827 , G01N2291/02854
摘要： PROBLEM TO BE SOLVED: To provide a method and device accurately measuring a thin state of a pipe after identifying positions in the axial and circumferential directions.
SOLUTION: An elastic wave transmitter 5 excites non-dispersive elastic wave in an elastic wave transmitting element 1. An elastic wave receiver 7 receives a non-dispersive elastic signal from the elastic wave transmitting element 3, and an A/D converter 9 converts a received signal into a digital signal. The elastic wave signal converted into the digital signal is divided into a plurality of signal elements. Next, propagation path of the signal elements is determined, an appearance time TA of a specific signal element A is measured, and an appearance time TB of a dispersive signal element B through the same propagation path as that of the signal element A is measured. Then, the difference between the appearance time TA and appearance time TB is converted into the thickness data.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种方法和装置，其在识别轴向和圆周方向上的位置之后精确地测量管道的薄度状态。解决方案：弹性波发射器5在弹性波发射元件1中激发非分散弹性波。弹性波接收器7从弹性波发射元件3接收非分散弹性信号，并且A / D转换器 9将接收的信号转换为数字信号。被转换为数字信号的弹性波信号被分成多个信号元件。接下来，确定信号元件的传播路径，测量特定信号元件A的出现时间TA，并且测量通过与信号元件A相同的传播路径的色散信号元件B的出现时间TB。然后，将出现时间TA和出现时间TB之间的差值转换为厚度数据。版权所有（C）2007，JPO＆INPIT

7. 发明专利

JP2006194661A Eddy current flaw detection probe and eddy current flaw detector 有权
标题翻译： EDDY电流检测探头和EDDY电流检波器
公开(公告)号：JP2006194661A
公开(公告)日：2006-07-27
申请号：JP2005004898
申请日：2005-01-12
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NISHIMIZU AKIRA , MATSUI TETSUYA , KOIKE MASAHIRO , NONAKA YOSHIO , YOSHIDA ISAO
IPC分类号： G01N27/90
CPC分类号： G01N27/9013 , G01N27/904
摘要： PROBLEM TO BE SOLVED: To provide an eddy current flaw detection probe, capable of performing accurate flaw detection without deforming a coil, and to provide an eddy current flaw detector. SOLUTION: The eddy current flaw detection probes 1 and 1A-11H are equipped with the flexible substrate 6 facing the surface of an inspection target 2, a plurality of the coils 7 fixed to the flexible substrate 6 to be changed over successively and continuously, elastomers 4, 4A, 4B, 4C, 4G and 4H arranged on the side of the inspection target 2 of the flexible substrate 6, pressing means 5, 5A, 5B, 5G and 5H for pressing the elastomer 4, 4A, 4B, 4C, 4G and 4H to the inspection target 2 and displacement regulating means (9A, 9B and 9G) for regulating the displacement of the press means 5, 5A, 5B, 5G and 5H to the inspection target 2. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够在不使线圈变形的情况下执行精确的探伤并提供涡流探伤仪的涡流探伤探针。＆lt;解决方案＆gt;涡流探伤探针1和1A-11H配备有面向检查对象2的表面的柔性基板6，多个线圈7，其固定在挠性基板6上，连续地切换，布置在柔性基板6的检查对象2侧的弹性体4,4A，4B，4C，4G和4H，用于按压弹性体4,4A，4B的加压装置5,5A，5B，5G和5H， 4C，4G和4H到检查对象2和位移调节装置（9A，9B和9G），用于调节压力装置5,5A，5B，5G和5H向检查目标2的位移。版权所有（ C）2006，JPO＆NCIPI

8. 发明专利

JP2006023215A Ultrasonic inspection method, ultrasonic inspection device and guide wave transducer for the ultrasonic inspection device 有权
标题翻译：超声波检查方法，超声波检查装置和超声波检测装置的导波变换器
公开(公告)号：JP2006023215A
公开(公告)日：2006-01-26
申请号：JP2004202591
申请日：2004-07-09
申请人： Hitachi Engineering & Services Co Ltd , Hitachi Ltd , 株式会社日立エンジニアリングサービス , 株式会社日立製作所
发明人： NAGASHIMA YOSHIAKI , ENDO MASAO , KOIKE MASAHIRO , NARUSHIGE MASASHI , KOGA ISAO
IPC分类号： G01N29/04 , G01N29/24
摘要： PROBLEM TO BE SOLVED: To ultrasonically inspect an inspection target at least a part of which is embedded, while suppressing the attenuation of guide waves.
SOLUTION: A guide wave transmitter/receiver 2 for receiving the trigger of transmission from a computer 4 applies a signal for driving the guide wave to a guide wave transducer 1 and the guide wave transducer 1 excites the guide wave 13 slower than concrete in sonic velocity to propagate the same to piping 11. The guide wave 13 axially propagates through the piping 11 and the component of the guide wave reflected from a discontinuous point due to cracks or reduced wall thickness is received by the guide wave transducer 1; and the receiving signal in which receiving waveform data is contained is inputted to the guide wave transmitter-receiver 2 to be amplified and the amplified receiving signal is converted into a digital signal, by an A/D converter 3 to be transmitted to the computer 4. Next, the computer 4 analyzes the receiving waveform data of the guide wave contained in the digital signal and calculates the position, in the axial direction of flaw from the appearance time of the signal.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：在抑制引导波的衰减的同时，对其至少一部分被嵌入的检查对象进行超声波检查。解决方案：用于从计算机4接收传输触发的引导波发射器/接收器2将用于驱动引导波的信号施加到引导波传感器1，并且引导波换能器1激励导波13比混凝土慢引导波13轴向传播通过管道11，引导波传感器1接收由于裂纹或壁厚减小而从不连续点反射的引导波的分量; 并且其中包含接收波形数据的接收信号被输入到引导波发射器 - 接收器2以被放大，并且放大的接收信号被A / D转换器3转换成数字信号以传送到计算机4 接下来，计算机4分析数字信号中包含的引导波的接收波形数据，并根据信号的出现时间计算出缺陷轴向的位置。版权所有（C）2006，JPO＆NCIPI

9. 发明专利

JP2005326171A Method and apparatus for jointing winding of electric device 有权
标题翻译：用于接合电气设备的方法和装置
公开(公告)号：JP2005326171A
公开(公告)日：2005-11-24
申请号：JP2004142327
申请日：2004-05-12
申请人： Hitachi Eng Co Ltd , Hitachi Ltd , 日立エンジニアリング株式会社 , 株式会社日立製作所
发明人： SUKETA MASAMI , KAGEYAMA YASUAKI , WATANABE NORIHIRO , ODAJIMA SHINYA , TANAHASHI HIDEO , KOIKE MASAHIRO , TAKESUTE YOSHINORI , IKEDA KAZUTOSHI
IPC分类号： G01N29/04 , B23K1/012 , G01N29/06 , G01N29/07 , G01N29/265 , G01N29/38 , G01N29/44 , H02K15/04 , G01N29/10
CPC分类号： G01N29/07 , G01N29/0609 , G01N29/265 , G01N29/38 , G01N29/4427 , G01N2291/011 , G01N2291/015 , G01N2291/044 , G01N2291/102 , G01N2291/2626 , G01N2291/2634 , G01N2291/2677
摘要： PROBLEM TO BE SOLVED: To obtain a joint part of good quality by grasping the soldered state of a winding conductor having the cooling inner hole of a dynamo or the like with high precision.
SOLUTION: A plurality of winding conductors each of which has an inner hole are soldered and a measuring mechanism 10 for measuring the joint state of them by ultrasonic flaw detection is provided. The measuring mechanism 10 is divided into a scanner 101 and a holder 19 and installed in a narrow part to be assembled. A display mechanism 20 displays a measuring result on a two-dimensional diagram and an evaluation mechanism 30 evalates the joint state of the winding conductors on the basis of the flaw area of the joint part of the winding conductors and the integrated length of a good part. A judging mechanism 40 evaluates the correlation with the preliminarily accumulated classification pattern by a flaw cause of soldering to indicate its cause.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：通过高精度地掌握具有发电机等的冷却内孔的绕线导体的焊接状态来获得良好的接合部分。解决方案：多个具有内孔的绕组导体被焊接，并且提供了用于通过超声波探伤来测量它们的接合状态的测量机构10。测量机构10被分成扫描器101和保持器19，并安装在要组装的狭窄部分中。显示机构20在二维图上显示测量结果，并且评估机构30基于绕组导体的接合部分的缺陷面积和良好部分的集成长度来评估绕组导体的接合状态。判断机构40通过焊接的缺陷来评价与预先累积的分类模式的相关性，以指示其原因。版权所有（C）2006，JPO＆NCIPI

10. 发明专利

JP2005308691A Ultrasonic probe and ultrasonic inspection device 有权
标题翻译：超声探头和超声检查装置
公开(公告)号：JP2005308691A
公开(公告)日：2005-11-04
申请号：JP2004129821
申请日：2004-04-26
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TAKESUTE YOSHINORI , KOIKE MASAHIRO , MATSUI TETSUYA
IPC分类号： G01N29/24 , H01L41/08 , H01L41/18 , H04R17/00
摘要： PROBLEM TO BE SOLVED: To provide an ultrasonic probe of an excellent production yield having 250°C or more of heat resistant temperature.
SOLUTION: In this ultrasonic probe provided with a piezoelectric element 1 and a metal plate 2 serving as a front face plate, a soldering alloy having 350°C or more of melting point, for example, zinc-aluminum alloy is used for joining the piezoelectric element 1 to the metal plate 2, and a temperature in the joining is restrained thereby, and an influence of thermal strain is minimized thereby to enhance the yield.
COPYRIGHT: (C)2006,JPO&NCIPI

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