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11. 发明专利

JPS6480855A ULTRASONIC FLAW DETECTOR 失效
公开(公告)号：JPS6480855A
公开(公告)日：1989-03-27
申请号：JP23726387
申请日：1987-09-24
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： SASAKI TSUKASA , NARUSE AKISUKE , UOZUMI HIROTO , TAKAKU KAZUO , KIMURA YUTAKA
IPC分类号： G21C17/003 , G01N29/04 , G21C17/00
摘要： PURPOSE:To obtain the title ultrasonic flaw detector which is operated by a remote controller and performs both normal flaw detection and accurate flaw detection by itself by varying the quantity of engagement between gears for transmitting the power of each driving part properly according to circumstances. CONSTITUTION:An operator of the detector judges which of the normal flaw detection and accurate flaw detection is performed at a stage of judgement 50 and operates the controller panel 51 of the ultrasonic flaw detecting device 5. When the normal flaw detection mode 52 is specified, the distance between respective driving part gear shafts of the ultrasonic flaw detector 5 increases, but the quantity of engagement between the gears decreases, thereby performing the fast flaw detection with low accuracy. When the accurate flaw detection mode 53 is specified, on the other hand, the distance between the gear shafts of the respective driving parts of the ultrasonic flaw detector 5 decreases and the quantity of engagement between the gears increases, thereby performing the slow flaw detection with high accuracy.

12. 发明专利

JPS63266354A ULTRASONIC FLAW DETECTING METHOD 失效
公开(公告)号：JPS63266354A
公开(公告)日：1988-11-02
申请号：JP10007187
申请日：1987-04-24
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： TAKAKU KAZUO , SASAKI TSUKASA , UOZUMI HIROTO , TAKAHASHI FUMINOBU , KAKINUMA YUKIO , KANDA KIMIO
IPC分类号： G01N29/44 , G01N29/04 , G01N29/06 , G01N29/22
摘要： PURPOSE:To display a crack in the direction perpendicular to the bottom face, as a pattern being simular to an actual shape, by correcting the coordinate of an echo source, when the echo source brought to grouping crosses the face opposed to the face for allowing a probe to adhere tightly. CONSTITUTION:Grouping of an echo source is executed by denoting the paths of DELTAx=0, 1, 2...-1, -2... as L0, L1, L2...Lm1, Lm2... respectively, deriving the differences L0-L1, L1-L2, L2-L3...L0-Lm1, Lm1-Lm2... to each adjacent path, and setting the echo source in which said value is smaller than some constant K, as the same group. In this case, K is, for instance, a value in the vicinity of a data collecting pitch. After the grouping of the echo source has been executed, novel coordinate axes X-Y0 in which a point P0 where the group is crossed with the bottom face is an origin is considered, and the mean value (a) of gradients of each echo source P0, P1, P2... is derived. Subsequently, this mean value (a) and a value of the Z axis of each echo source are used, and PC1, PC2... are obtained as corrected echo sources.

13. 发明专利

JPS61148366A ULTRASONIC PROBE 失效
公开(公告)号：JPS61148366A
公开(公告)日：1986-07-07
申请号：JP26848384
申请日：1984-12-21
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： TAKAKU KAZUO , NARUSE AKISUKE , SASAKI TSUKASA , KANDA KIMIO
IPC分类号： G01N29/24 , G01N29/28
摘要： PURPOSE:To obtain a probe ideal for the flaw detection of a rugged object to be inspected such as welding beads, by making the surface abutting on a tubular object to be inspected into a shape of a concave column with the circumference-wise end thereof bevelled at a specified angle. CONSTITUTION:The surface of a wedge 2 is worked to match the shape of an object 9 to be detected so that the center of the curvature radius 13 will fall on the axis of an ultrasonic beam 10 with the angle of refraction of 0 deg.. The angle between the front and the contact surface of a wedge shall be such to overcome a projection or the lice easily and has a correction face 14. The angle between the rear surface and the contact surface 16 thereof also has a correction face 15. It should be noted that the face 15 shall be as deep as possible and the face 16 as small as possible. The probe thus obtained is appli cable for the direction method as well as the gap method. It is also applicable for the single detection as well as the double-split type and further for the type with a shoe and the wedge type. This facilitates the circumferential ultra sonic flaw detection about a weld part of a piping joint.

14. 发明专利

JPS59220643A TRACK FOR SURFACE RUNNING OF PRESSURE VESSEL OF NUCLEAR REACTOR 失效
公开(公告)号：JPS59220643A
公开(公告)日：1984-12-12
申请号：JP9394183
申请日：1983-05-30
申请人： HITACHI LTD
发明人： SASAKI TSUKASA , NARUSE AKISUKE , TAKAKU KAZUO
IPC分类号： G01N29/04 , G01N29/265 , G21C17/003 , G21C17/00
摘要： PURPOSE:To attain to reduce heat stress and to enhance earthquake-proofness by using an inspection apparatus in two or more of plants in common, by a method wherein a vertical track and a peripheral track are divided and held so as to provide gaps so as to be spaced apart from the pressure vessel of a nuclear reactor while the own wts. of the tracks arranged in adjacent relationship are held in a gamma-shield. CONSTITUTION:The peripheral track crossing vertical tracks 3 and supports 5 consists of upper peripheral tracks 2a, 2b and lower peripheral tracks 2a', 2b' while supports 7 are provided so as to bridge the space between the peripheral tracks 2a, 2a' and the space between the peripheral tracks 2b, 2b'. Vibration dampening tools 8 are also provided between the supports 5, 7 and a gamma-shield 11 so as to bridge both of them and vibration dampening tools 12 bridging the vertical tracks 3 and the gamma-shield 11 are provided to the lower sides of the vertical tracks 3. Tracks 1a, 1b are supported through the vibration dampening tools 8, 12 by the gamma-shield 11. When the heights from the peripheral tracks 2a, 2b to brackets 6 are made equal, the parts below the peripheral tracks 2a, 2b are displaced during thermal deformation while the same relative position is held and heat stress is absorbed by the action of the link mechanisms 8a of the vibration dampening tools 8, 12. The vibration of the tracks 1a, 1b caused by an earthquake becomes stationary because of being elastically supported in the vertical and radius directions and restrained in the movement thereof to the peripheral direction by the vibration dampening tools 8, 12.

15. 发明专利

JP2007017358A Inspection device and inspection method for diffuser of jet pump 审中-公开
标题翻译：喷气发动机检测装置及检查方法
公开(公告)号：JP2007017358A
公开(公告)日：2007-01-25
申请号：JP2005201031
申请日：2005-07-11
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： NAKAMURA MOTOYUKI , AKASU AKIRA , IKEDA KAZUTOSHI , SASAKI TSUKASA
IPC分类号： G21C17/003 , G21C15/25
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To provide an inspection device and an inspection method for a diffuser of a jet pump, capable of moving and installing accurately a sensor of an inspection device body, wherein inspection position accuracy is excellent and an inspection work is simple.
SOLUTION: In this inspection device for the diffuser, the inspection device body 2 is inserted into the diffuser from which an inlet mixer is dismounted, and inspection is performed from the inner surface by the sensor of the inspection device body 2, and the inspection device body 2 is arranged movably in a protection cylinder 1 inserted inside from an upper opening of the diffuser. A positioning member 5 on which a recessed groove 6 is formed used as a position regulation means is provided on the upper end of the protection cylinder 1, and the recessed groove 6 is engaged with a projection part on the upper end of the diffuser. The inspection device body 2 is constituted of an axial-direction moving means 10 for adjusting a height-direction position of the sensor 43, a circumferential-direction driving means 20 for adjusting circumferential-direction movement of the sensor, a clamp 30 of the position regulation means for pressing the inspection device body onto the diffuser inner surface, and a sensor means 40 for inspecting an inspection object portion.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种用于喷射泵的扩散器的检查装置和检查方法，其能够精确地移动和安装检查装置主体的传感器，其中检查位置精度优异并且检查工作是简单。解决方案：在该扩散器用检查装置中，将检查装置主体2插入到其中拆下入口混合器的扩散器中，并且通过检查装置主体2的传感器从内表面进行检查，检查装置主体2可移动地布置在从扩散器的上部开口插入的保护筒1中。在保护筒1的上端设置有用于形成凹槽6的定位构件5作为位置调节装置，并且凹槽6与扩散器的上端的突出部接合。检查装置主体2由用于调节传感器43的高度方向位置的轴向移动装置10，用于调节传感器的周向运动的周向驱动装置20，位置的夹具30 用于将检查装置主体按压到扩散器内表面上的调节装置和用于检查检查对象部分的传感器装置40。版权所有（C）2007，JPO＆INPIT

16. 发明专利

JP2005308557A Eigenfrequency measuring device 有权
标题翻译：特殊测量装置
公开(公告)号：JP2005308557A
公开(公告)日：2005-11-04
申请号：JP2004126203
申请日：2004-04-22
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： AOIKE SATOSHI , SASAKI TSUKASA , TANAKA MASAAKI , NONAKA YOSHIO , OKIDO SHINOBU
IPC分类号： G01N29/12 , G21C17/00 , G21C17/003
摘要： PROBLEM TO BE SOLVED: To evaluate existence of a crack even when a specimen is positioned in the water and on a narrow part, or in the case of a structure discontinuous body having a weld zone or the like, and to evaluate hardness in an underwater environment.
SOLUTION: A vibration rod crimped on a reactor in-core structure by applying a fixed load in the underwater environment is vibrated, and the eigenfrequency is measured, to thereby evaluate existence of a crack on the specimen or the hardness thereof. Hereby, existence of the crack can be simply evaluated even when the specimen is positioned in a reactor pressure vessel or positioned in the water and on the narrow part, or in the case of the structure discontinuous body having the weld zone or the like. The hardness can be also evaluated in the underwater environment.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了评价即使在试样位于水中和狭窄部位时，或者在具有焊接区等的结构不连续体的情况下，也存在裂纹，并且评价硬度在水下环境中。解决方案：通过在水下环境中施加固定负荷来振动在反应堆堆芯结构上的振动杆振动，并且测量本征频率，从而评估样品上存在裂纹或其硬度。因此，即使当试样位于反应堆压力容器中或者位于水中和狭窄部分时，或者在具有焊接区等的结构不连续体的情况下，也可以简单地评估裂纹的存在。也可以在水下环境中评估硬度。版权所有（C）2006，JPO＆NCIPI

17. 发明专利

JPH11281785A Control rod drive mechanism 失效
标题翻译：控制杆驱动机构
公开(公告)号：JPH11281785A
公开(公告)日：1999-10-15
申请号：JP8080598
申请日：1998-03-27
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： INOUE SHINZO , SASAKI TSUKASA , KODAMA TOSHIHIRO
IPC分类号： G21C7/12 , G21C7/16
CPC分类号： Y02E30/39
摘要： PROBLEM TO BE SOLVED: To provide a control rod drive mechanism improved in reliability of pressure resistive seal part. SOLUTION: An upper split part flange is small-sized and contained in a spool piece 6. A detent mechanism is provided in between the upper split part 5 and a control rod drive mechanism housing 4. The detent mechanism in between the upper split part 5 and a control rod drive mechanism housing 4 is automatically released by attaching a spool piece 6. A detent mechanism is provided in between the upper split part 5 and the spool piece 6. The upper split part 5 and the spool piece 6 are combined with screws.
摘要翻译：要解决的问题：提供一种提高耐压密封部件可靠性的控制棒驱动机构。解决方案：上部分割部分凸缘是小尺寸的并且容纳在卷筒6中。棘爪机构设置在上部分割部分5和控制棒驱动机构壳体4之间。上部分割部分5 控制棒驱动机构壳体4通过安装卷轴6而自动释放。在上部分割部分5和卷轴片6之间设置有一个止动机构。上部分割部分5和卷轴片6与螺钉。

18. 发明专利

JPH09281273A OPERATION DEVICE FOR PRESSURE CONTAINER 失效
公开(公告)号：JPH09281273A
公开(公告)日：1997-10-31
申请号：JP9079496
申请日：1996-04-12
申请人： HITACHI LTD
发明人： KAJIYAMA SHIGERU , SASAKI TSUKASA
IPC分类号： G21C17/003 , B62D57/024 , G21C17/013
摘要： PROBLEM TO BE SOLVED: To securely perform remote operation by employing a rolling system of an infinite track as a magnetic crawler system which allows attraction by a specific number of magnets at any time and make the magnets come into surface contact and a travel guide which comes into contact with a tube group. SOLUTION: A lower mirror 2 of a pressure vessel is fitted with many CRD housings 3 and LCM housings so that they penetrate the mirror vertically. Meridian weld zones 6 to be inspected at angles of 0, 90, 180, and 270 deg.. Magnetic crawlers 13 (caterpillar) are arranged in two right and left arrays along the travel direction of an ultrasonic inspection device 10 by attraction in conformity with the reverse surface shape of the lower mirror 2. One of travel guides 15 and 15 of the ultrasonic inspection device 10 is fixed and the other guide 15 is pressed by a spring, so the inspection device 10 travels along the CRD housings 3. A slide arm 14 fitted at right angles to the travel direction scans the circumference of a weld zone 6 with the ultrasonic probe 11 at its tip to perform specific ultrasonic inspection.

19. 发明专利

JPH06308096A ULTRASONIC FLAW DETECTION METHOD AND DEVICE FOR L-SHAPED BOLT 失效
公开(公告)号：JPH06308096A
公开(公告)日：1994-11-04
申请号：JP9300393
申请日：1993-04-20
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： SASAKI TSUKASA , KIMURA YUTAKA , AKASU AKIRA , KANDA KIMIO
IPC分类号： G01N29/04
摘要： PURPOSE:To provide an L-shaped bolt ultrasonic flaw detection technique for performing the ultrasonic flaw detection test of the soundness of an L-shaped bolt positively and efficiently. CONSTITUTION:An ultrasonic probe 28 is set at an inclination angle so that an ultrasonic beam 29 can be thrown to the corner portion of an AHC (Access Hole Cover) mounting bolt 25 which is an L-shaped bolt and then an ultrasonic beam 29 is applied while rotating the ultrasonic probe 28 around a center axis 0-0 of the AHC mounting bolt 25.

20. 发明专利

JPH06273393A ULTRASONIC FLAW DETECTOR 失效
公开(公告)号：JPH06273393A
公开(公告)日：1994-09-30
申请号：JP6205893
申请日：1993-03-22
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： SASAKI TSUKASA , KIMURA YUTAKA , KANDA KIMIO
IPC分类号： G01N29/04 , G01N29/26 , G01N29/10
摘要： PURPOSE:To allow ultrasonic flaw detection test at a welded part of a pressure vessel for boiling water type atomic reactor comprising a drum part and a supporting skirt part having different outer diameters by laying a rail dedicated for the welded part between the drum part and the supporting skirt part. CONSTITUTION:The ultrasonic flaw detector 100 comprises a body frame 110 running on a track 225, a first arm 10 coupled with the body frame 110, a second arm 20 having an ultrasonic probe 50 fixed at the tip thereof, an arm supporting part 30 coupling the first and second arms 10, 20, a motor 31, a pinion 32, a guide roller 33, and a rack 11. The detector 100 is further provided with means for shifting the arm supporting part 30 along the first arm 10. The second arm 20 is supported by the arm supporting part 30 through a supporting pin 21 so that the second arm 20 can rotate around an axis parallel with the track 225.

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