专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPS62126345A PROBE FOR EDDY CURRENT FLAW DETECTION 失效
公开(公告)号：JPS62126345A
公开(公告)日：1987-06-08
申请号：JP26670085
申请日：1985-11-27
申请人： KAWASAKI HEAVY IND LTD
发明人： SHINDO YOSHIHISA , YOSHIE SHINJI , MORIMOTO MASASHI
IPC分类号： G01N27/90
摘要： PURPOSE:To increase the resolving power to a flaw in a circumferential direction, by providing an inspection coil to a large number of columnar iron cores in outer peripheral surfaces. CONSTITUTION:A cylindrical insulating material 2 is engaged with and fixed to the outer peripheral surface of a columnar iron core 1 at the central part in the longitudinal direction thereof and a large number of sets of the inspection coils 4 fitted to a bobbin 3 are mounted to the outer peripheral surface thereof so as to form pairs in the axial direction thereof. When an eddy current flaw detection probe 7 is inserted in a tubular body 8 to be inspected, a magnetic circuit, wherein magnetic flux passes through the tubular body 8 from a permanent magnet 5a to enter a permanent magnet 5b and returned to the permanent magnet 5a from the iron core 1, is constituted. When a loop-formed line of magnetic force passes through the tubular body 8 to be inspected, a local eddy current is generated by the coil 4 at a part where the quantity of magnetic force becomes max. and the central part of the iron core 1 is positioned.

2. 发明专利

JPH10325830A FLAW DETECTOR FOR HEATING TUBE 失效
公开(公告)号：JPH10325830A
公开(公告)日：1998-12-08
申请号：JP15046197
申请日：1997-05-23
申请人： KAWASAKI HEAVY IND LTD , CHUBU ELECTRIC POWER
发明人： SHINDO YOSHIHISA , TSUKINO TOKUYUKI , SUGITA YUJI , KOBAYASHI HIROYOSHI
IPC分类号： G01N27/90
摘要： PROBLEM TO BE SOLVED: To enhance detection accuracy of the depth of flaw by making uniform a split detection coil, limiting the spread of the electromagnetic field distortion distribution of the flaw in a heating tube and suppressing the effect of a flaw part on the circumferential split detection coil. SOLUTION: A flaw detection probe 3" comprises a detection coil 2" and an exciting coil 1 held in a probe case 6 at an interval equal to or longer than two times of the diameter of a heating tube 4. The detection coil comprises two sets of split detection coil 9A, 9B, each comprising element coils split at least into four in the circumferential direction, arranged in two rows wherein the circumferential angle of the two sets of split detection coil is shifted such that the circumferential center of the element coil is matched with the circumferential end of the other element coil. Electromagnetic shielding boards partition respective element coils of the two sets of split detection coils 9A, 9B from each other and from the probe core.

3. 发明专利

JPH0980027A APPARATUS AND METHOD FOR FLAW DETECTION OF FERROMAGNETIC PIPE 失效
公开(公告)号：JPH0980027A
公开(公告)日：1997-03-28
申请号：JP23646495
申请日：1995-09-14
申请人： CHUBU ELECTRIC POWER , KAWASAKI HEAVY IND LTD
发明人： WATANABE YASUTAKA , ONDA KATSUHIRO , SHINDO YOSHIHISA , NAKAMURA YASUMASA
IPC分类号： G01N27/90
摘要： PROBLEM TO BE SOLVED: To provide an apparatus and a method in which a flaw in all parts of a measuring part can be detected surely by either a backward inspection or a forward inspection even when the outside of a pipe to be inspected is provided with a part strongly affecting the magnetic path of a line of magnetic force such as a baffle, support metal fittings or the like. SOLUTION: An eddy-current flow detection apparatus by a remote field method is inserted into a ferromagnetic pipe to be inspected, and a nondestructive inspection is performed. In the eddy-current flaw detection apparatus, a detection part is constituted of one set of detection coils 3 and of two sets of exciting coils 1, 2 which are excited by an AC current which has amplified an AC current by an identical oscillation source. In the two sets of exciting coils 1, 2, one set each are arranged on both sides in the pipe axial direction of the set of detection coils 3 at distances about twice or higher the pipe diameter of the pipe, to be inspected, from the detection coils 3 and by keeping equal distances. In the two sets of exciting coils 1, 2, the coils are wound in the same number of turns in such a way that electromagnetic waves generated by the coils are symmetric with respect to the detection coils 3, the connection of respective terminals or the winding direction of the coils is selected, and signals from the detection coils 3 are connected to a flaw detector body.

4. 发明专利

JPH08278289A FLAW DETECTION DEVICE AND METHOD FOR FERROMAGNETIC TUBE 失效
公开(公告)号：JPH08278289A
公开(公告)日：1996-10-22
申请号：JP7913195
申请日：1995-04-04
申请人： KAWASAKI HEAVY IND LTD , CHUBU ELECTRIC POWER
发明人： SHINDO YOSHIHISA , NAKAMURA KIYOUSEI , WATANABE YASUTAKA , ONDA KATSUHIRO
IPC分类号： G01N27/83 , G01N27/90
摘要： PURPOSE: To quickly and accurately detect the defective part of a ferromagnetic tube by mounting a leakage magnetic flax method detection part and a remote field method detection part to a flaw detection probe in series while they can keep a specific distance. CONSTITUTION: A leakage magnetic flux method part 1 is constituted by mounting an exciting coil 3 excited by DC current to the tip part of a bobbin 14 placed at one edge of a cable 7 and placing a detection coil 4 at the center part of N and S poles which are magnetized to the coil 3. Then a remote field method part 2 is constituted by placing an exciting coil 5 excited by AC current at the rear part of the magnetic flux detection method 1 and placing a detection coil 6 between the coil 5 and the magnetic flux method 1. At this time, both method parts 1 and 2 should be spaced so that no measurement error occurs due to the mutual interference of the coils 3 and 5. Then, a probe 11 is inserted to the deepest part of a tube 8 to be inspected without supplying electricity to both method parts 1 and 2, DC current is applied to the coil 3, AC current is applied to the coil 5, and the probe 11 is slowly pulled out of the tube 8 for detecting flaw.

5. 发明专利

JPH0827260B2 失效
公开(公告)号：JPH0827260B2
公开(公告)日：1996-03-21
申请号：JP27155986
申请日：1986-11-14
申请人： KAWASAKI HEAVY IND LTD
发明人： SHINDO YOSHIHISA
IPC分类号： G01N27/90

6. 发明专利

JPH04220556A REMOTE FIELD EDDY FLOW TESTING DEVICE 失效
公开(公告)号：JPH04220556A
公开(公告)日：1992-08-11
申请号：JP41187790
申请日：1990-12-20
申请人： KAWASAKI HEAVY IND LTD
发明人： SUZUKI TATSUYA , SHINDO YOSHIHISA , HOSHIKAWA HIROSHI
IPC分类号： G01N27/90
摘要： PURPOSE:To enable an interference signal due to a pipe supporting plate to be excluded and a defect to be detected even if there is the defect at a part where the pipe supporting plate of a heat-transfer pipe is located. CONSTITUTION:A detection coil 3 which is wound around a holder 6 at a tip part of a probe guide pipe 4 is divided into two portions in reference to an axis and detection coils 3a and 3b in semi-circular rind are connected differentially. The coils 3a and 3b are generated due to excitation of an excitation coil 2, receive an electromagnetic energy which flows into a test electrically conductive pipe 1, and then sends a difference signal of the detection voltage to an impedance analyzer 10. The analyzer 10 compares frequency and phase of the difference signal of an excitation voltage of the coil 2 and the coils 3a and 3b. While operating in this manner, the guide pipe 4 moves at a constant speed within the electrically conductive pipe 1. Then, if there is a defect 1a at a part where a pipe-supporting plate 14 is located, differentially connected coils 3a and 3b detect and erase each signal at half part of the supporting plate 14 but the detection signal of the defect remains. The difference signal of this detection signal is sent to the analyzer 10 and an X-Y plotter 13 displays the defect detection signal.

7. 发明专利

JPS63246646A DETECTION OF BREAKAGE OF HEAT EXCHANGER TUBE FOR SODIUM-WATER SEPARATION TUBE STEAM GENERATOR 失效
公开(公告)号：JPS63246646A
公开(公告)日：1988-10-13
申请号：JP8010187
申请日：1987-04-01
申请人： KAWASAKI HEAVY IND LTD
发明人： SHINDO YOSHIHISA
IPC分类号： G01N27/02 , F22B1/06 , F28F11/00 , G21C17/00 , G21C17/003
摘要： PURPOSE:To facilitate the exchange of a detection coil in case of a trouble, by arranging the detection coil on the circumference of a container for detection attached to the bottom of a sodium outlet chamber to eliminate the need for making a through hole for lead in the container for detection. CONSTITUTION:When a heat exchanger tube 16 for sodium breaks, an intermediate heat medium 17 of a mixed liquid metal or Pb 44.5% and Bi 55.5% flows into the heat exchanger tube 16 for sodium and settles gradually in a container 19 for detection attached to the bottom of a sodium outlet chamber 6, which causes a gradual change in electric resistance of a solenoid type detection coil 22 changes gradually. On the other hand, a fixed electric resistance is generated at a reference coil 29 provided on the circumference of a branch tube 26 at a sodium outlet 5 and sent to an electric resistance comparator 25. When the electric resistance changed of the solenoid type detection coil 22 reaches a value above a certain level, the breakage of the heat exchanger tube 16 for sodium is confirmed to give an alarm from an alarm generator 35.

8. 发明专利

JPH10123004A ULTRASONIC DETECTING METHOD FOR WATER LEAKAGE IN HEAT EXCHANGER 失效
公开(公告)号：JPH10123004A
公开(公告)日：1998-05-15
申请号：JP29341496
申请日：1996-10-15
申请人： KAWASAKI HEAVY IND LTD
发明人： SHINDO YOSHIHISA , YOSHIZAWA SHUNJI
IPC分类号： G01N29/00 , G01M3/04 , G01M3/24 , G21C17/025 , G01N29/20
摘要： PROBLEM TO BE SOLVED: To provide an ultrasonic detecting method in which not only a small leak scale but also a large leak scale can be detected with high sensitivity and at an early stage. SOLUTION: A plurality of transmitting/receiving sensors 6 are installed in the circumferential direction on the outer face of a trunk part at a heat exchanger 1 so as to correspond to a plurality of chambers 11 which are partitioned and formed in the circumferential direction inside the trunk, a plurality of stages of the sensors are installed in the length direction, and an operation in which burst wave-shaped ultrasonic waves at the same frequency are transmitted respectively from transmitting parts at the respective transmitting/receiving sensors 6 in the circumferential direction so as to be received by receiving parts is repeated. In addition, after the operation has made a tour, the operation is repeated by using burst wave-shaped ultrasonic waves at different frequencies, the burst wave-shaped ultrasonic waves are passed through hydrogen air bubbles generated by jetting high-pressure vapor into liquid sodium flowing inside the trunk at the heat exchanger 1, attenuated burst wave-shaped ultrasonic waves are received by a reception part at any transmitting/receiving sensor, and a water leak is detected.

9. 发明专利

JPH04116392A SUPPORTING STRUCTURE FOR HEAT TRANSMITTING PIPE OF HEAT EXCHANGER 失效
公开(公告)号：JPH04116392A
公开(公告)日：1992-04-16
申请号：JP23508090
申请日：1990-09-05
申请人： KAWASAKI HEAVY IND LTD
发明人： SUZUKI TATSUYA , SHINDO YOSHIHISA
IPC分类号： G21C17/003 , F28F9/00 , F28F9/013 , G21D1/00
摘要： PURPOSE:To improve the reliability of sensing of defects in a heat transferring tube by a method wherein a supporting member for supporting the heat transferring tube is made of non-magnetic material and the heat transferring tube supporting part in the supporting part is provided with a groove or a recess in parallel with the center line of the axis of the heat transferring tube. CONSTITUTION:A bearing type tube supporting plate 14' acting as a supporting part for supporting a heat transferring tube 1 is made of non-magnetic material. A heat transferring tube supporting member 15 at an inner circumferential side of the tube supporting plate 14' is provided with a groove or a recess 16 in parallel with an axial center line L of the heat transferring tube 1. If there is a defect la at a part or a near part of location where the tube supporting plate 14' for the heat transferring tube 1 is positioned, a detecting coil 3 detects the defect 1a of the tube supporting plate 14' and the heat transferring tube 1. Since the heat transferring tube supporting part 15 is provided with a groove or a recess 16, the flow of eddy current in a circumferential direction is reduced and the level of a sensing signal is further lowered. In this way, since the sensing signal for the defect 1a of the heat transferring tube 1 is larger than a sensing signal of the tube supporting plate 14', the defect sensing signal is left as it is and then it is displayed in the X-Y plotter.

10. 发明专利

JPH0464794A LEAK PREVENTING STRUCTURE FOR WELD JOINT PART OF TUBE 失效
公开(公告)号：JPH0464794A
公开(公告)日：1992-02-28
申请号：JP17417890
申请日：1990-06-29
申请人： KAWASAKI HEAVY IND LTD
发明人： OSAKI TOSHIO , TOKUMITSU MASAJI , SHINDO YOSHIHISA , KUNIMATSU TAKASHI , YAMADA TAKESHI
IPC分类号： G21D1/00 , F16L55/16 , F28F11/02
摘要： PURPOSE:To prevent leak of fluid inside a tube securely and secure the reliability by using a protective short tube manufactured of one-directional share memory alloy, or applying a tension seal to close parts to a weld joint part of a tube and a protective short tube by circular heat diameter shrinkage or diameter expansion work. CONSTITUTION:Shape memory alloy having a one-directional shape memory performance is moulded and manufactured under a room temperature, and the shape is memorized at the transformation point to be a thin protective short tube 5 which is engaged around the outer circumferential surface of a weld joint part 4 of a heat transmission tube 1. When the protective short tube 5 gets over 200 deg.C to return to the memorized share, it is tightly applied to the outer circumferential surface of the weld joint part 4 to seal the part, and leak can be prevented securely. Or otherwise, a protective short tube 7 is engaged around the weld joint part 4 of the heat transmission tube 1, so the heat transmission tube 1 close to the weld joint part 4, a joint tube 3, and the protective short tube 7 are tension sealed by circular heat diameter shrinkage method. The protective short tube 7 is thus tension sealed by circular heat diameter shrinkage, thereby leak can be prevented.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式