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1. 发明专利

JP2001051094A NEUTRON TREATMENT FACILITY 失效
公开(公告)号：JP2001051094A
公开(公告)日：2001-02-23
申请号：JP22226599
申请日：1999-08-05
申请人： HITACHI LTD , JAPAN ATOMIC ENERGY RES INST
发明人： TOMOBE TSUYOSHI , DOGE HIDENORI , AIZAWA KENJI , HINO RYUTARO , KAMINAGA MASAKI , ASO TOMOKAZU , KONAKAWA HIROYUKI , KINOSHITA HIDETAKA
IPC分类号： G21F3/00 , G21G4/02 , H05H3/06
摘要： PROBLEM TO BE SOLVED: To provide a neutron treatment facility capable of shortening the exchange time of equipment and improving the equipment treatment capability. SOLUTION: In the neutron treatment facility provided with a biological shield body 2 preventing neutron leak, a neutron generator 1 arranged inside the biological shield body and generating neutron, a reflector 3 reflecting the generated neutron to a specific direction, a casing 10 for moderating neutron, and a support device for supporting these components in the middle of the biological shield body 2 and forming capable of withdrawing out of the biological shield body 2 together with the components, the support device is constituted of a first support device 5 supporting the neutron generator, and the second support device 4 supporting the reflector, the casing for moderator and its piping. The second support device 4 is formed in a plurality of separable separated structures. By disassembling the separated structure, the casing 10 for moderation and a moderator pipe 11 are formed so as to be able to be disassembled.

2. 发明专利

JPH03219023A METHOD AND APPARATUS FOR STRENGTHENING PRESSURE PROOF OF METAL-MADE HOLLOW STRUCTURE, AND PRESSURE PROOF HOLLOW STRUCTURE MADE WITH THIS METHOD AND METHOD FOR USING THE SAME UNDER PRESSURE PROOF CONDITION 失效
公开(公告)号：JPH03219023A
公开(公告)日：1991-09-26
申请号：JP1259890
申请日：1990-01-24
申请人： HITACHI LTD
发明人： MATSUNOBU TAKASHI , AIZAWA KENJI , ANAZAWA KAZUMI , ENOMOTO KUNIO
IPC分类号： G21D1/00 , C21D7/12 , C21D9/08 , C21D9/14
摘要： PURPOSE:To improve pressure proof performance of a hollow structure by giving temp. difference between both surfaces in thickness direction within the range, which does not exceed the yield stress, to the metal-made hollow structure an applying the pressure. CONSTITUTION:A thick wall piping 1 is fixed with clamp 7 and both ends thereof are sealed with plugs 2, and water cooled in a cooler 3 at an arbitrary temp. is circulated into the piping 1 by driving a compressor 5 and circulating pump 6 to cool the inside thereof. On the other hand, the high frequency current is conducted to a high frequency generating coil 9 arranged to outside of the piping 1 from a high frequency generator 10 to heat the outside of piping 1, and the coil 9 is shifted in longitudinal direction of the piping with a control panel 13 through a slider 11 at the fixed velocity. Therefore, tensile stress on inner face of the piping 1 and compressive stress on outer face thereof are developed, and the temp. difference is given to the thickness direction of piping 1 within the range, which does not exceed the yield stress. By this method, the pressure proof performance of the hollow structure is effectively improved.

3. 发明专利

JPS60107595A CONTAINER FOR NUCLEAR REACTOR 失效
公开(公告)号：JPS60107595A
公开(公告)日：1985-06-13
申请号：JP21486983
申请日：1983-11-15
申请人： HITACHI LTD
发明人： ANAZAWA KAZUMI , TANABE MASAHIKO , YOSHIDA YOSHIO , AIZAWA KENJI , ISHIKAWA KIYOSHI
IPC分类号： G21C13/00

4. 发明专利

JPS6091080A SUPPORT STRUCTURE OF PIPE GROUP 失效
公开(公告)号：JPS6091080A
公开(公告)日：1985-05-22
申请号：JP19907583
申请日：1983-10-26
申请人： HITACHI LTD
发明人： ANAZAWA KAZUMI , TANABE MASAHIKO , AIZAWA KENJI , ISHIKAWA KIYOSHI
IPC分类号： F16L3/22 , F16L3/223

5. 发明专利

JPS57154576A AUTOMATIC WATER LEVEL REGULATION VALVE USING FLOAT 失效
公开(公告)号：JPS57154576A
公开(公告)日：1982-09-24
申请号：JP3538381
申请日：1981-03-13
申请人： HITACHI LTD
发明人： AIZAWA KENJI
IPC分类号： F16K31/18
摘要： PURPOSE:To prevent a valve from hunting phenomenon by providing a cylindrical bearing between a float and the valve to be fitted on the periphery of a float lever for converting the movement of the float to a vertical movement. CONSTITUTION:A slide plate 11 is provided with a long hole E, and a bolt 15 is fixed in the long hole via a washer 14 for connecting between a slide plate 11 and a boss 12. When water level is lowered by L', a float 10 is slided as an arrow D shows, and consequently, a metal fitting 18 is given sliding by L'. At this stage, the slide plate 11 and the face of the washer 14 are loosely slided on a slide face F. Meanwhile, a valve lever 9b connected with the slide part is moved by the moved length L' of the float round a point of support G, and opens a valve.

6. 发明专利

JP2001051098A NEUTRON TREATMENT FACILITY, AND ITS PART EXCHANGING METHOD 失效
公开(公告)号：JP2001051098A
公开(公告)日：2001-02-23
申请号：JP22225899
申请日：1999-08-05
申请人： HITACHI LTD , JAPAN ATOMIC ENERGY RES INST
发明人： TOMOBE TSUYOSHI , DOGE HIDENORI , AIZAWA KENJI , HINO RYUTARO , KAMINAGA MASAKI , ASO TOMOKAZU , KONAKAWA HIROYUKI , KINOSHITA HIDETAKA
IPC分类号： G21F3/00 , G21G4/02 , G21H5/00 , G21K5/02
摘要： PROBLEM TO BE SOLVED: To provide a neutron treatment facility capable of shortening the exchanging time of equipments and improving the equipment treatment capability and remote controllability. SOLUTION: In the neutron treatment facility provided with a neutron generator 1 fixed to a support device to hold and generating neutron by collision of proton beam, reflector casing arranged around a neutron generator and a biological shield 2 arranged so as to surround the reflector casing, formed to introduce the neutron generator outside the biological shield 2 together with the support device supporting the neutron generator when exchanging the neutron generator and its surrounding parts and to exchange the parts or the device outside the biological shield, parts or devices of high exchange frequency and of low exchange frequency among them are supported separately with individual support device and are made capable of withdrawing outside the biological shield for every support device.

7. 发明专利

JP2000346986A NEUTRON SHIELDING DEVICE 失效
公开(公告)号：JP2000346986A
公开(公告)日：2000-12-15
申请号：JP15807099
申请日：1999-06-04
申请人： HITACHI LTD , JAPAN ATOMIC ENERGY RES INST
发明人： TOMOBE TSUYOSHI , DOGE HIDENORI , AIZAWA KENJI , HINO RYUTARO , ASO TOMOKAZU , KONAKAWA HIROYUKI
IPC分类号： G21F3/00 , G21K1/00
摘要： PROBLEM TO BE SOLVED: To obtain a neutron shielding device capable of reducing the shielding body mass without increasing the size of the device. SOLUTION: In the neutron shielding, device provided with a biological shield body 2 having a neutron guide tube 3 arranged so as to surround a neutron generator 1 and guiding outside the neutron generated by the neutron generator in the mother body and guiding the neutron outside and a shield body 5 provided in the neutron guide tube 3 of the biological shield body 2 and opening and closing the neutron guide tube so as to guide neutrons outside by opening and closing the neutron guide tube 3 with the shield body 5, the shield body 5 is formed in a circle having a penetration hole and rotatably. By the rotation of this shield body, the penetration hole of the shield body and the neutron guide tube are matched by the rotation of the shield body and the neutron guide tube is opened.

8. 发明专利

JPS63212851A AUTOMATIC LIQUID PENETRATION TYPE FLAW DETECTION TESTER FOR PIPE GROUP 失效
公开(公告)号：JPS63212851A
公开(公告)日：1988-09-05
申请号：JP4525287
申请日：1987-03-02
申请人： HITACHI LTD
发明人： MATSUNOBU TAKASHI , SUEYOSHI NORIKIMI , ISHIKAWA KIYOSHI , AIZAWA KENJI , ANAZAWA KAZUMI
IPC分类号： G01N21/84 , G01N21/91
摘要： PURPOSE:To perform a liquid penetration type flaw detection test, by a method wherein an endoscope objective part, a penetration liquid jet nozzle, a washing solution jet nozzle and a developer jet nozzle are inserted in a piping group and controlled so as to be arbitrarily drivable in the axial and peripheral directions of the piping group. CONSTITUTION:A turntable 11 is fixed so as to be rotatable around an outlet/ inlet pipe 1 and loaded with a penetration liquid jet nozzle 3, a developer jet nozzle 7 and an endoscope objective part 9 and has function rotating all of them around the outlet/inlet pipe 1. The turntable 11 is rotated by 360 deg. in a counterclockwise direction at a constant speed while a developer is injected from the developer jet nozzle 7. In this state, if a crack is present in the outlet/ inlet pipe 1, the crack part is colored to become a state capable of visually detecting the crack. Next, the image from the endoscope objective part 9 is observed on a display 48 while the turntable 11 is rotated by 360 deg. in the clockwise direction at a high speed. By this method, a liquid penetration type flaw detection test can be remotely performed.

9. 发明专利

JPS6363579A METHOD AND EQUIPMENT FOR CUTTING PIPING 失效
公开(公告)号：JPS6363579A
公开(公告)日：1988-03-19
申请号：JP20572286
申请日：1986-09-01
申请人： HITACHI LTD
发明人： MATSUNOBU TAKASHI , ISHIKAWA KIYOSHI , SUEYOSHI NORIKIMI , SUZUKI KENICHI , AIZAWA KENJI
IPC分类号： B23K13/00 , B23K13/01
摘要： PURPOSE:To cut the piping without necessitating the chip protection and to improve repairing work efficiency by heating a part of the metal piping up to the neighborhood of the transformation temperature and giving plastic deformation to rupture the heated part of the piping. CONSTITUTION:The pipe 1 is held and fixed in-between two fixed clamps 3 and two movable clamps 6 driven by an air cylinder 4. Split high-frequency heating coils 7 are fitted to the movable clamps 6 and the fixed clamps 3 and when the heating coils 7 are held in-between the clamps 6 and 3, the annular high-frequency heating coils 7 are constituted. Furthermore, a rotary table 8 is fitted to the central part of a main body 2 of the titled equipment to drive the rotary table 8 by a motor 10. The rotary table 8 is fixed with the pipe 1 in-between an intermediate fixed clamp 11 and an intermediate movable clamp 13 and the moment is applied around an axis of the piping 1 by the rotation of the rotary table 8. Then, the large plastic deformation is applied to the part which is locally heated up to the neighborhood of the transformation temperature by the heating coils 7 and as a result, the heated part is ruptured and the heated part of the piping 1 is cut.

10. 发明专利

JPS62172235A APPARATUS FOR DETECTING MINUTE LEAKAGE 失效
公开(公告)号：JPS62172235A
公开(公告)日：1987-07-29
申请号：JP1383086
申请日：1986-01-27
申请人： HITACHI LTD
发明人： MATSUNOBU TAKASHI , ISHIKAWA KIYOSHI , SUEYOSHI NORIKIMI , SUZUKI KENICHI , AIZAWA KENJI
IPC分类号： G01M3/16
摘要： PURPOSE:To detect a leaked fluid easily, by changing electrostatic capacity by quantity corresponding to the difference between relative dielectric constants of air and the fluid when the internal fluid is leaked from machinery and the gap between capacitor electrodes is filled with said fluid. CONSTITUTION:When leakage was generated in the vicinity of the welded joint part 6 of piping 1, water leaked from the piping 1 is penetrated in a liquid permeable insulating member 11. The capacity C(F) of a capacitor constituted of a detection electrode 7, the member 11 and the piping 1 can be shown by the formula when dielectric constant is set to epsilon0, relative dielectric constant to K, the area of electrodes to S and the distance between electrodes to d. As a result, if the area S, the distance d and the dielectric constant epsilon0 are constant, the capacity of the capacitor is determined by the relative dielectric constant K of the substance filling the space between electrodes. If the substance between electrodes changes from air to water, the capacity C increase up to 80 times and the change in the capacity can be detected easily.

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