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1. 发明专利

JPH07190264A CLAMP CHAIN PIPING JOINT 失效
公开(公告)号：JPH07190264A
公开(公告)日：1995-07-28
申请号：JP33490693
申请日：1993-12-28
申请人： HITACHI LTD , JAPAN ATOMIC ENERGY RES INST , HITACHI NUCLEAR ENG
发明人： IMURA HIROYA , OZAWA YOSHIHIRO , SHIBANUMA KIYOSHI , KAKUDATE SATOSHI , OKA KIYOSHI , KANAMORI NAOKAZU
IPC分类号： F16L23/04
摘要： PURPOSE:To improve remote controllability by providing a guide flange which contains a chain-like fastening mechanism which connects a clamp to a clamp plate, and arranging the guide flange movably in an axial direction with respect to one piping. CONSTITUTION:Conical flanges 1a, 2a are respectively formed on ends of pipings 1, 2. A gasket 3 is arranged between the opposed flanges 1a and 2a. Clamp groups 4 are arranged so as to fit to conical portions of the flanges 1a, 2a. A guide flange 5 housing the clamp group 4 is slidably engaged with an outer periphery 1b of the piping 1. A projection 5e is formed on an end of the guide flange 5 so as to be moved by a remote control device, while a projection 1c is formed on the piping 1. The guide flange 5 is moved by attracting the projections. A clamp chain is not necessarily detached in every installation, and can be kept attached. Installation operation is simplified.

2. 发明专利

JPH0854482A NUCLEAR FUSION REACTOR 失效
公开(公告)号：JPH0854482A
公开(公告)日：1996-02-27
申请号：JP18844794
申请日：1994-08-10
申请人： HITACHI LTD , JAPAN ATOMIC ENERGY RES INST
发明人： KINOSHITA SHIGEMI , OZAWA YOSHIHIRO , KAJIURA SOJI , MIYA NAOYUKI , NINOMIYA HIROMASA
IPC分类号： G21B1/11 , G21B1/00 , G21B1/13 , G21B1/17
摘要： PURPOSE:To shorten the time required for the entire repairing work by reducing the exposure of an operator at the time of transporting a radioactivated diverter to a repairing place, and further facilitating the transporting work. CONSTITUTION:A circumferential pool chamber 21 for storing water 22 is disposed in the periphery of the nuclear fusion reactor, and a radioactivated diverter 6 is filed in water 22 of the chamber 21, and then transported in the state imersed in the water 22. At the time of normal operating of generating a plasma, a leak valve is installed to discharge high-temperature high-pressure gas to the chamber 21 when the pressure in a vacuum vessel 3 is abnormally raised. Accordingly, since the water 22 shields the radiation, the operator can approach, the operator can work while visually confirming the state of the diverter 6 under the water by the operator himself. Therefore, the work is facilitated, and the time required for the work can be shortened.

3. 发明专利

JPH04142488A TRITIUM CONCENTRATION MEASURING DEVICE 失效
公开(公告)号：JPH04142488A
公开(公告)日：1992-05-15
申请号：JP26391290
申请日：1990-10-03
申请人： HITACHI LTD , JAPAN ATOMIC ENERGY RES INST
发明人： UDA TATSUHIKO , SAKAGAMI MASAHARU , OZAWA YOSHIHIRO , OKUNO KENJI , NARUSE YUJI
IPC分类号： G01T1/167 , G01T1/185 , G01T7/02 , G21B1/00 , H01J47/02
摘要： PURPOSE:To measure the tritium concentration without being affected by the pollution on the inner face of a detector by providing a hydrogen adsorbing metal plate adsorbing the sample gas and a device radiating the pulse light to the surface of the adsorbing metal plate. CONSTITUTION:A hydrogen adsorbing metal plate 11 easily adsorbing hydrogen (including tritium) and mirror-finished on the surface, e.g., a nickel plate, is put in an ionization chamber 1. When the pulse light is radiated on the hydrogen adsorbing metal plate 11 face, the adsorbed tritium component is gasified and desorbed. The pulse radiation light is received by a light detector 12 in a data processor after an amplifier 4, it is processed by a synchronous amplifier 5 amplifying only the signal component synchronous with the pulse light, and the output is displayed.

4. 发明专利

JPH04160361A METHOD AND APPARATUS FOR ANALYZING AND MEASURING ISOTOPE GAS 失效
公开(公告)号：JPH04160361A
公开(公告)日：1992-06-03
申请号：JP28428790
申请日：1990-10-24
申请人： HITACHI LTD , JAPAN ATOMIC ENERGY RES INST
发明人： UDA TATSUHIKO , OZAWA YOSHIHIRO , OKUNO KENJI , NARUSE YUJI
IPC分类号： G01N21/65 , G01N30/74 , G01N30/88
摘要： PURPOSE:To analyze and measure respective separated component gases using a Raman scattering spectroscope by separating isotope gas into respective isotope gases using a high temp. column for gas chromatography. CONSTITUTION:A part of the component gas flowing through process piping 1 is sampled through a branch pipe 18 together with the carrier gas from a carrier gas supply tank 2 and a definite amount of said gas is sampled by a sampling pipe 3 to be allowed to flow to a separation column 4 packed with a molecular sieve. For example, the hydrogen isotope and methane isotope separated by the column 4 are detected by a heat conductivity type detector 6. When the presence of hydrogen gas is detected, the respective separated gases are sampled. Next, gas cells 71, 72 are irradiated with the laser beam from argon ion laser 8 through irradiation windows and the scattering beams 9 from the gases in the cells are incident to a Raman scattering spectroscope 10 and spectrally analyzed to measure Raman scattering beams. By this method, the concns. of respective hydrogen isotope gases can be measured from the intensity of the spectrum peak of the hydrogen isotope gas of the gas cell 71.

5. 发明专利

JPH04299300A CHAMBER FOR HOUSING FUSION REACTOR OR TRITIUM HANDLING DEVICE 失效
公开(公告)号：JPH04299300A
公开(公告)日：1992-10-22
申请号：JP6491391
申请日：1991-03-28
申请人： HITACHI LTD , JAPAN ATOMIC ENERGY RES INST
发明人： OZAWA YOSHIHIRO , ITO SHINICHI , SEKI YASUSHI
IPC分类号： G21B1/11 , G21B1/00 , G21F3/00 , G21F9/02
摘要： PURPOSE:To lower the concentration of tritium in the chamber in a short time and prevent the radiation contamination of a concrete wall of the chamber by absorbing tritium released in the chamber at the time of an accident. CONSTITUTION:Metal lining 7 in which tritium is difficult to diffuse is performed on the surface of a concrete wall 6 composing a structure wall of the chamber. The surface of the metal lining 7 may well be covered with a solid panel easy to absorb tritium water. The solid panel 8 may well be made of hydraulic inorganic solid like cement. A water retentive agent may well be mixed in the solid panel 8. Many pores may well be provided on the surface of the solid panel 8 in order to increase an effective area thereof. Further, a device for spraying water toward the solid panel 8 may well be equipped.

6. 发明专利

JPH07191165A INTRA-FURNACE STRUCTURE MOVING DEVICE OF NUCLEAR FUSION REACTOR 失效
公开(公告)号：JPH07191165A
公开(公告)日：1995-07-28
申请号：JP33310993
申请日：1993-12-27
申请人： HITACHI LTD , JAPAN ATOMIC ENERGY RES INST
发明人： IWAMOTO TARO , OZAWA YOSHIHIRO , SHIBANUMA KIYOSHI , KAKUDATE SATOSHI , OKA KIYOSHI , KANAMORI NAOKAZU
IPC分类号： G21B1/11 , G21B1/00 , G21B1/25
摘要： PURPOSE:To carry in and out an intra-furnace structure from an upper port which is structured narrow. CONSTITUTION:An intra-furnace structure moving device for a nuclear fusion reactor is to carry in and out an inboard module 1 split in a plurality of segments from the upper port of the reactor, wherein the arrangement includes the first guide means consisting of a slide base 15 which slides freely in a guide groove provided at the inner wall surface of reactor and the first vying means consisting of two couples of parallel link mechanisms 16 supported by the first guide means rotatably or movable vertically, a grasping part 17, and a gripping mechanism of link plate 24, etc., whereby carrying-in and -out is performed through intra-furnace vertical and horizontal motions of the inboard module 1 by spreading each parallel link mechanism 16. Accordingly any structure can be carried in and out from the upper port through vertical and horizontal movement within the reactor with the aid of guide grooves at the inner wall surface, the module 1, etc.

7. 发明专利

JPH0694866A BLANKET OF NUCLEAR FUSION REACTOR 失效
公开(公告)号：JPH0694866A
公开(公告)日：1994-04-08
申请号：JP24181092
申请日：1992-09-10
申请人： HITACHI LTD , JAPAN ATOMIC ENERGY RES INST
发明人： MAKI KOICHI , SHIBATA KEIICHIRO , AMADA TATSUO , OZAWA YOSHIHIRO , UDA TATSUHIKO , OTSUKA MICHIO , NITAWAKI TAKESHI , YOSHIDA HIROSHI , ENOEDA MIKIO , TAKATSU HIDEYUKI
IPC分类号： G21B1/13 , G21B1/00
摘要： PURPOSE:To obtain a blanket of a nuclear fusion reactor in which the influence to the heat transfer property owing to a thermal deformation can be reduced, the structure is simple, and the manufacture is easy. CONSTITUTION:A cooling material 3 of a blanket, and either a tritium breeding material 4 or a nutron doubling material 6 are filled in a blanket container 1, pipes in which a material other than the above materials is filled are installed in the blanket container 1, and furthermore, a structure in which the nutron doubling material 6 is placed between the cooling material 3 and the tritium beeding material 4 is adapted. The product is cooled through a specific thickness of nutron doubling material 6, and a temperature difference between the temperatures of the cooling material 3 and the tritium breeding material 4 has been obtained, and even though the thickness of the nutron doubling material 6 is changed owing to a thermal deformation, the influence to the heat transfer property is small. Since the blanket is composed as an assembly of pin type pipe group of duplex pipes at the best, the manufacture is easy.

8. 发明专利

JPH05288874A 失效
公开(公告)号：JPH05288874A
公开(公告)日：1993-11-05
申请号：JP8890692
申请日：1992-04-09
申请人： HITACHI LTD
发明人： OZAWA YOSHIHIRO , UDA TATSUHIKO , MAKI KOICHI
IPC分类号： G21B1/13 , G21B1/00
摘要： PURPOSE:To obtain a blanket of a fusion device in a simple structure which can be manufactured easily by avoiding direct contact between neutron multiplication material pebble and a breeder material pebble which are mixed and filled and easily react at high temperature and then positively preventing the temperature of a multiplication blanket from being reduced as compared with tritium release temperature extremely. CONSTITUTION:A zirconium coating 29 is formed at least on one of neutron multiplication material pebble 32 and a breeder material pebble 31, thus suppressing their direct contact and reaction at high temperature. Also, a fin 33 is attached to a cooling pipe 30 with a smaller pitch than the diameters of the pebbles 31 and 32, thus preventing excessive reduction in temperature due to direct contact on the entire surface between the pebbles and the cooling pipe. The length of the fin 33 is adjusted and the thickness of a helium gas gap layer 22 is adjusted.

9. 发明专利

JPH0436694A METHOD AND DEVICE FOR DISSOLVING USED NUCLEAR FUEL AND METHOD AND DEVICE FOR CONCENTRATING RADIOACTIVE WASTE LIQUID 失效
公开(公告)号：JPH0436694A
公开(公告)日：1992-02-06
申请号：JP14137790
申请日：1990-06-01
申请人： HITACHI LTD
发明人： FUKAZAWA TETSUO , OZAWA YOSHIHIRO , MIURA NOBORU
IPC分类号： G21C19/46 , G21F9/06 , G21F9/08
摘要： PURPOSE:To suppress the decease in the concn. of the nitrous acid in a nitric acid soln. by suppressing the decomposition of the nitrous acid by the coating and forming of a gas-liquid boundary. CONSTITUTION:The nitric acid soln. 3 and sheared pieces 4 of used nuclear fuel are introduced into a dissolving device 2 and thereafter, a radiation resistant oil 1 is added thereto to coat the soln. boundary. The sheared pieces 4 are gradually dissolved when the soln. 3 is heated by driving a heater 5. The nitrous acid is formed with the dissolution at this time, but the soln. boudary is coated, the transfer of the nitrous acid to a gaseous phase is prevented. The decrease in the concn. of the nitrous acid in the soln. is suppressed and the specified conc. is maintained. The formation of volatile RuO is suppressed in this way and the contamination by Ru is suppressed. In addition, the formation of high valency ions to accelerate corrosion is suppressed and the corrosion of the material of the concentration device is lessened.

10. 发明专利

JPH02309288A NUCLEAR FUSION REACTOR 失效
公开(公告)号：JPH02309288A
公开(公告)日：1990-12-25
申请号：JP12883689
申请日：1989-05-24
申请人： HITACHI LTD
发明人： GOTO SUMITAKA , KIKUCHI SHIGERU , NAKAZAWA TETSUO , MITSUYOSHI TADAHIKO , KOYAMA TETSUO , OZAWA YOSHIHIRO , ITO SHINICHI
IPC分类号： G21B1/05 , G21B1/11 , G21B1/13 , G21B1/17
摘要： PURPOSE:To lower the temperature of a low tritium permeation layer in operation by protecting the low tritium permeation layer from the heat load of plasma or corpuscular radiation and the load of the corpuscular radiation by a heat-resistant member for the purpose of intercepting heat. CONSTITUTION:A heat-resistant member 10 is interposed between a low tritium permeation layer and a core plasma and thereby the low tritium permeation layer is shielded so that the plasma or corpuscular radiation may not strike directly on the layer. By interposing the heat-resistant member in this way, the low tritium permeation layer can be kept at a low temperature. In addition, the permeation of tritium can be suppressed effectively.

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