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1. 发明专利

JPS5649953A ULTRASONIC FLAW DETECTOR 失效
公开(公告)号：JPS5649953A
公开(公告)日：1981-05-06
申请号：JP12537979
申请日：1979-10-01
申请人： HITACHI LTD , HITACHI SERVICE ENG , HITACHI ENG CO LTD
发明人： NARUSE AKISUKE , HIGASHIKUJIYOU TAKAYUKI , HOSONO TATSUKUMA , KURIHARA KENICHI
IPC分类号： G01N29/04 , G01N29/26
摘要： PURPOSE:To enlarge the range of application of flaw detection to the welded part of piping without necessity of skill in inspection by a constitution wherein scanning of a probe is operated manually and the scanned position can be measured antomatically. CONSTITUTION:When a probe holder 9 is operated manually corresponding to a scanned position for flaw detection, a guide arm 6 is rolled out freely from an arm roll-up device 10. And, a rotary encoder 11 for detecting length detects the quantity of the length thereof and measures the position of a probe automatically. Meanwhile, the arm 6 conducting the scanning for flaw detection in the direction of circumference, while moving in the direction of length, turns in that direction together with a driving device 4'. The angle of its turn is detected by a potentiometer 17 for detecting angle retained by a support block 16 fitted to a truck 15. Moreover, the position of the driving device 4' on a rail 3 is detected and calculated by a rotary encoder 19. Since the scanned position on a complex curved pipe is detected automatically in this way, the range of application of the flaw detection can be enlarged without necessity of the higher skill in inspection.

2. 发明专利

JPS60192296A Core spray support 失效
标题翻译：核心喷雾支持
公开(公告)号：JPS60192296A
公开(公告)日：1985-09-30
申请号：JP4707184
申请日：1984-03-14
申请人： Hitachi Ltd , Hitachi Service Eng
发明人： SEKIGAMI TAKASHI , WADA NORIAKI , SAKAI TAKAO , SATOU SUKENOBU , NARUSE AKISUKE
IPC分类号： G21C15/18
CPC分类号： Y02E30/40

3. 发明专利

JPS59231485A STRUCTURE IN REACTOR 失效
公开(公告)号：JPS59231485A
公开(公告)日：1984-12-26
申请号：JP10570183
申请日：1983-06-15
申请人： HITACHI LTD , HITACHI SERVICE ENG
发明人： SEKIGAMI TAKASHI , WADA NORIAKI , ENDOU AKIO , SATOU SUKENOBU , NARUSE AKISUKE
IPC分类号： G21C15/243 , G21C15/24

4. 发明专利

JPH031633B2 失效
公开(公告)号：JPH031633B2
公开(公告)日：1991-01-11
申请号：JP8378484
申请日：1984-04-27
申请人： HITACHI LTD
发明人： ISHIKAWA YOSHIMI , NARUSE AKISUKE , SAITO HIDEYO , KUROSAWA KOICHI
IPC分类号： G21C13/032 , G21C19/28

5. 发明专利

JPS63307391A NEUTRON SOURCE MONITOR AND DRIVE TUBE FOR INTERMEDIATE OUTPUT REGION MONITOR 失效
公开(公告)号：JPS63307391A
公开(公告)日：1988-12-15
申请号：JP14314287
申请日：1987-06-10
申请人： HITACHI LTD
发明人： ISHII TSUTOMU , WADA NORIAKI , SATO SUKENOBU , UOZUMI HIROTO , NARUSE AKISUKE
IPC分类号： G21C17/10
摘要： PURPOSE:To shorten the length of a plunger guiding part of a guide and to improve reliability by forming the joint part of the guide and spring housing by butt welding. CONSTITUTION:The upper part of a drive tube is supported by fitting the front end thereof into the notched part of an upper grid plate to position the tube. The plunger 1 at the top end is, therefore, constructed to be elongated and contracted vertically by using a spring 2 in order to fit the drive type into the upper grid plate. Since the plunger 1 moves to elongate and retreat, an auxiliary plunger part 7 is provided to the guide 3. This auxiliary part 7 is formed to the length shorter than a spacing so as not to comply with the spacing condition possessed by the potential to be generated by the stress corrosion cracking (crevice SCC) generated in the spacing part. The inside diameter of the guide 3 and the inside diameter at the top end of the spring housing 4 are set larger than the diameter in the middle stage of the plunger 1 to take the spacing so as not to comply with the spacing conditions of the crevice SCC. On the other hand, the joint part of the guide 3 and the housing 4 is formed by butt welding to eliminate the spacing structure. The reliability is thus enhanced.

6. 发明专利

JPS6337900B2 失效
公开(公告)号：JPS6337900B2
公开(公告)日：1988-07-27
申请号：JP16427180
申请日：1980-11-20
申请人： HITACHI LTD
发明人： TAKAKU KAZUO , FUJIMOTO KOJI , NARUSE AKISUKE
IPC分类号： G21C17/003 , G01N29/04 , G01N29/26 , G21C17/00

7. 发明专利

JPS63101742A DEFECT INSPECTION 失效
公开(公告)号：JPS63101742A
公开(公告)日：1988-05-06
申请号：JP24742886
申请日：1986-10-20
申请人： HITACHI LTD
发明人： HAYASHI MAKOTO , OTAKA MASAHIRO , NARUSE AKISUKE
IPC分类号： G01N27/20 , G01N3/32
摘要： PURPOSE:To inspect the position and shape of a cracking, by using measuring terminals arranged in matrix to measure bidirectional potential difference distribution in the perimeter of an inspecting section for an object to be inspected. CONSTITUTION:Terminals 20 concurrently serving for supply of DC current and for measurement of potential difference are mounted by spot welding or the like at equal intervals axially and circumferentially in the perimeter of a weld part 19 of a piping 1. The terminals 20 are grouped into one cable 21 and connected to a measuring device 100. DC current supplied from a DC power source 7 is switched in the polarity with a current polarity converter 8 controlled with a computer 3 through an interface 5 and supplied to a specific terminal 20 through a multiplexer 9. A potential difference between the numerous terminals 20 is measured by a potential difference meter 12 with the selection of a measuring terminal through multiplexers 10 and 11. The potential difference being measured is transferred to the computer 3 through an interface 6, which judges the shape of a cracking from axial and circumferential potential difference distributions of the piping.

8. 发明专利

JPS62211582A SWIMMING POOL TYPE NUCLEAR REACTOR 失效
公开(公告)号：JPS62211582A
公开(公告)日：1987-09-17
申请号：JP5251086
申请日：1986-03-12
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： SAKAI TAKAO , NARUSE AKISUKE , HAYASHI EISAKU , HAYAKAWA YOSHIAKI
IPC分类号： G21C1/14

9. 发明专利

JPS62197762A POSITION CONTROLLER FOR PROBE 失效
公开(公告)号：JPS62197762A
公开(公告)日：1987-09-01
申请号：JP3904086
申请日：1986-02-26
申请人： HITACHI LTD
发明人： SASAKI TSUKASA , NARUSE AKISUKE , TAKAKU KAZUO
IPC分类号： G01N29/04
摘要： PURPOSE:To enable accurate control of the position of a probe without the use of a copying sensor, by correcting the scanning origin position of the probe according to the tilt angle of a flaw detection arm even when the flaw detection arm is tilted following 3-D saddle-like changes of an object to be welded and a weld part of a welding object. CONSTITUTION:An ultrasonic flaw detector 11 is made up of a track 12 provided on a nozzle 9, a driver 13 running on the track 12 and a scanning section 15 for scanning a weld part 10 with a prove 14 at the right angle thereto 10. Moreover, the scanning section 15 is made up of a flaw detection arm 16, a holding section 17, a container 8 and a scan driving section 18 for pressing the arm 16 against a container 8 following 3-D saddle-like changes in the weld part 18 between the container 8 and the nozzle 9. Then, the probe 14 scans the weld part 10 parallel therewith 10 with a driver 13 running on the rail 12 by the scanning section 15 perpendicular to the weld part 10. Moreover, the position of the probe can be corrected and controlled regardless of setting condition of the nozzle 9 of the unit 11 and setting conditions of probe scanning original.

10. 发明专利

JPS62141390A METALLIC HEAT INSULATOR STRUCTURE 失效
公开(公告)号：JPS62141390A
公开(公告)日：1987-06-24
申请号：JP28095585
申请日：1985-12-16
申请人： HITACHI LTD
发明人： SAITO HIDEYO , KUROSAWA KOICHI , KAMINAGA SHINJI , TANI MICHINARI , NARUSE AKISUKE
IPC分类号： G21C11/08 , F16L59/06

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