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1. 发明专利

DE3370867D1 APPARATUS FOR MEASURING DISSOLVED HYDROGEN CONCENTRATION 未知
公开(公告)号：DE3370867D1
公开(公告)日：1987-05-14
申请号：DE3370867
申请日：1983-06-08
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： OZAWA YOSHIHIRO , UCHIDA SHUNSUKE , NAKAYAMA NORIO
IPC分类号： G01N27/416 , G01N27/403 , G01N27/48 , G01N27/49 , G21C17/02 , G01N27/30 , G01N27/46 , G01N27/54 , G01N33/00 , G01N33/18

2. 发明专利

JPS5834353A OXYGEN METER 失效
公开(公告)号：JPS5834353A
公开(公告)日：1983-02-28
申请号：JP13273581
申请日：1981-08-26
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： OZAWA YOSHIHIRO , UCHIDA SHIYUNSUKE , NAKAYAMA NORIO
IPC分类号： G01N27/404 , G01N27/416 , G01N27/49
摘要： PURPOSE:To measure the concentration of O2 and H2O2 dissolved in a liquid at the same time, by providing each pair of anodes and cathodes in a diaphragm type oxygen electrode and applying different applying voltage between each electrode. CONSTITUTION:O2 and H2O in a sample water enter into an electrolytic solution 13 passing through a diffusion film 2 provided on a sensor main body 1 which constitutes an oxygen meter. Cathodes 3, 4 and anodes 5, 6 are provided in the electrolytic solution 13. A battery 9 and an ammeter 18 are connected between the anode 5 and the cathode 3 and electric potential for reducing only H2O2 in the sample water is applied and then, an electric current A1 at this time is measured. Further, a battery 12 and an ammeter 11 are connected between the anode 6 and the cathode 4 and the electric potential for reducing O2 and H2O2 is applied and then, an electric current A2 at this time is measured. O2 is measured separately from H2O2 in a short time because the concentration of H2O2 in the sample water corresponds to the current A1 and that of O2 corresponds to the current A2-A1.

3. 发明专利

JPS57203945A HIGH TEMPERATURE/HIGH PRESSURE TYPE DISSOLVED OXYGEN METER 失效
公开(公告)号：JPS57203945A
公开(公告)日：1982-12-14
申请号：JP8819581
申请日：1981-06-10
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： OZAWA YOSHIHIRO , UCHIDA SHIYUNSUKE , NAKAYAMA NORIO
IPC分类号： G01N27/404 , G01N27/49 , G21C17/02
摘要： PURPOSE:To prevent damage to the body of a detector and an oxygen transmitting film under a high temperature and a high pressure by pinching a heat resistant oxygen transmitting film with a metal filter and a porous cathode while a thermal expansion of an internal electrolytic liquid is absorbed with a bellows. CONSTITUTION:The body 7 of a detector is housed in a container 2 through which a sample water passes and the body 7 thereof is filled with an electrolytic liquid. An oxygen transmitting film 9 for separating the sample water and the electrolytic liquid is grasped with a metal filter 10 arranged on the side of the sample water and with a porous cathode 8 arranged on the side of the electrolytic liquid. A bellows 3 is provided in the body 7 of the detector to absorb thermal expansion of an electrolytic liquid 6. A sample water flowing into a container 2 from a sample water inlet 12 drains outside at a sample water outlet 1 after passing the surface of the metal filter 10. The infiltration of the sample water into the body of the detector maintains a balance in the pressure between the detector and the electrolytic liquid.

4. 发明专利

JPS593345A Dissolved oxygen meter equipped with electrode for removing interfering component 失效
标题翻译：装有电极的溶解氧气测试仪用于去除干扰组分
公开(公告)号：JPS593345A
公开(公告)日：1984-01-10
申请号：JP11169582
申请日：1982-06-30
申请人： Hitachi Eng Co Ltd , Hitachi Ltd
发明人： OZAWA YOSHIHIRO , UCHIDA SHIYUNSUKE , NAKAYAMA NORIO
IPC分类号： G01N27/404 , G01N27/49
CPC分类号： G01N27/404
摘要： PURPOSE:To prevent interfering components from diffusing into the surface of a porous metal, by installing an electrode for removing the interfering components on the backside of the porous metal cathode of a dissolved oxygen meter. CONSTITUTION:An electrolytic soln. 3 is sealed in, and a porous metal cathode 1 is installed on the backside of an oxygen permeable membrane 6 to form the present dissolved oxygen meter. An electrically conductive metal, such as Au, Ag, or Pt, provided with through-holes only through which the electrolytic soln. is connected between the inside and outside is arranged near the cathode 1 to form the electrode 2 for removing interfering components. This electrodes 2 and an anode 4 are connected with a wire, and the potential difference between both electrodes 2, 4 is kept equal to that of the electrode 1 and an anode 5. Dissolved oxygen and the interfering components, such as ions in the electrolytic soln. 3 are reduced when diffusing and passing through the through-holes of the electrode 2. Hence, it can be prevented to cause interfering electric current.
摘要翻译：目的：为了防止干扰成分扩散到多孔金属表面，通过安装用于去除溶解氧计多孔金属阴极背面的干扰成分的电极。构成：电解溶液。密封在其中，多孔金属阴极1安装在透氧膜6的背面，形成本溶解氧计。诸如Au，Ag或Pt的导电金属，仅设有通孔，电解溶液通过该通孔。连接在内部和外部之间的阴极1设置在阴极1附近以形成用于去除干扰成分的电极2。该电极2和阳极4与导线连接，两电极2,4之间的电位差与电极1和阳极5的电位差保持相同。溶解的氧和干扰成分例如电解质中的离子 SOLN。 3在扩散并通过电极2的通孔时减少。因此，可以防止其引起干扰电流。

5. 发明专利

JPS58215549A Measuring apparatus of concentration of dissolved oxygen 失效
标题翻译：溶解氧的浓度测量装置
公开(公告)号：JPS58215549A
公开(公告)日：1983-12-15
申请号：JP9768582
申请日：1982-06-09
申请人： Hitachi Eng Co Ltd , Hitachi Ltd
发明人： OZAWA YOSHIHIRO , UCHIDA SHIYUNSUKE , NAKAYAMA NORIO
IPC分类号： G01N27/416 , G01N27/403 , G01N27/48 , G01N27/49 , G21C17/02
CPC分类号： G01N27/4045
摘要： PURPOSE:To obtain an apparatus capable of performing a direct fractional measurement of the concentration of H2 dissolved in water of a high-temperature reactor such as a light water reactor, a heavy water reactor without carrying out pressure reduction, cooling, etc., by immersing bellows communicating with an inner electrolyte and the whole body of a hydrogen electrode provided with a hydrogen permeating membrane on the surface, in sample water and bringing the back of the bellows into contact with the sample water. CONSTITUTION:The main body of a sensor is provided with a bellows 20 communicating with an electrolyte 18 and thermal expansion of the electrolyte is absorbed. Sample water is introduced into a sensor storing vessel from a sample introducing inlet 1 and is flowed out from a sample water exit 21. The balance of pressure between the sample water and the electrolyte is kept always because the sample water is filled in the sensor storing vessel and the whole main body of the sensor is immersed in the sample water and then, the main body of the sensor and a hydrogen permeating membrane are not broken down. An aqueous solution mixed with H2SO4 and NiSO4 is used for the electrolyte. Gaseous hydrogen introduced into the electrolyte is oxidized to a hydrogen ion by the reaction H2 zH +21 at an anode 12 and at this time, the reaction Ni +21 Niproceeds at a cathode. This output electric current between the anode and the cathode is measured by an ammeter A8 and the concentration of H2 dissolved in the sample water is determined quantitatively from this electric current value.
摘要翻译：目的：获得能够直接分级测量溶解在诸如轻水反应堆，重水反应器的高温反应器的水中的H 2浓度的装置，而不进行减压，冷却等，通过浸入与内部电解质连通的波纹管和在表面上，在样品水中并且使波纹管的背面与样品水接触的在氢氧电极上设置有氢渗透膜的全体。构成：传感器的主体设置有与电解质18连通的波纹管20，并且吸收电解质的热膨胀。样品水从样品引入口1引入传感器存储容器，并从样品出水口21流出。样品水和电解质之间的压力平衡始终是因为样品水被填充在传感器存储容器和传感器的整个主体浸入样品水中，然后传感器的主体和氢气渗透膜不会分解。与H2SO4和NiSO4混合的水溶液用于电解质。导入电解液中的气态氢在阳极12处通过反应H2 zH + + 21 - 被氧化成氢离子，此时在阴极处的反应Ni 2+ + 21 - 。通过电流表A8测量阳极和阴极之间的输出电流，并根据该电流值定量测定溶解在样品水中的H 2浓度。

6. 发明专利

DE2810995A1 未知
公开(公告)号：DE2810995A1
公开(公告)日：1978-09-21
申请号：DE2810995
申请日：1978-03-14
申请人： HITACHI LTD
发明人： YAMASHITA HISAO , OZAWA YOSHIHIRO , MAEKOYA CHIAKI , FUJITA KAZUNORI , NAKAJIMA FUMITO , TAKEUCHI SEIJI
IPC分类号： B01J20/06 , C02F1/28 , C02F1/48 , C22B60/02 , B01D15/08

7. 发明专利

DE3772220D1 未知
公开(公告)号：DE3772220D1
公开(公告)日：1991-09-26
申请号：DE3772220
申请日：1987-01-21
申请人： HITACHI LTD
发明人： KITAMORI TAKEHIKO , NISHI TAKASHI , FUKASAWA TETSUO , FUJIMORI HARUO , SASAHIRA AKIRA , OZAWA YOSHIHIRO , SUZUKI KAZUMICHI , YUSA HIDEO
IPC分类号： B01J19/12 , C01F17/00 , C01G1/00 , C01G43/00 , C01G55/00 , C01G56/00 , C02F1/30 , C02F1/32 , C02F1/72 , C22B3/44 , G21C19/46 , G21C19/48
摘要： A dissolved substance contained in a solution (7) is oxidized or reduced by adding a particulate semiconductor photocatalyst (8) and a water-soluble electron acceptor or donor for the particulate semiconductor photocatalyst to a solution (7) containing a dissolved substance, and irradiating the particulate semiconductor photocatalyst (8) in the solution with an electromagnetic wave (4) having an energy high enough to excite the particulate semiconductor photocatalyst (8), or by adding a particulate semiconductor photocatalyst (8) and a water-soluble electron acceptor or donor for the particulate semiconductor photocatalyst (8) to a solution (7) containing a dissolved substance and irradiating the particulate semiconductor photocatalyst (8) in the solution with an electromagnetic wave (4) having an energy high enough to excite the particulate semiconductor photocatalyst (8) and having a wavelength outside the absorption wavelength region of a precursor substance capable of producing an oxidation or reduction reaction-inhibiting substance, whereby (1) ions or complexes are converted to simple substances or to ions or compounds with different valencies, and (2) simple substances, ions, complexes or other compounds are separated and recovered or removed by utilizing its actions and effects.

8. 发明专利

DE3473374D1 PROCESS FOR SOLIDIFYING RADIOACTIVE WASTES 未知
公开(公告)号：DE3473374D1
公开(公告)日：1988-09-15
申请号：DE3473374
申请日：1984-05-18
申请人： HITACHI LTD
发明人： FUKASAWA TETSUO , OTSUKA MASAHARU , UETAKE NAOHITO , OZAWA YOSHIHIRO
IPC分类号： G21F9/16 , G21F9/30
摘要： PCT No. PCT/JP84/00250 Sec. 371 Date Jan. 16, 1985 Sec. 102(e) Date Jan. 16, 1985 PCT Filed May 18, 1984 PCT Pub. No. WO84/04624 PCT Pub. Date Nov. 22, 1984.A process for solidifying radioactive wastes, which comprises adding, to pellet or dissolved radioactive wastes, an alkali metal silicate as a filler, silicic acid, carbonic acid or an alkaline earth metal or polyvalent metal salt thereof as a hardener, and cement as an absorbent for absorbing water to be released with the progress of the reaction and, if necessary, water and mixing and solidifying the resulting mixture to thereby prevent deterioration of water-proofness due to precipitation of readily soluble salts on the surface of a solidified substance.

9. 发明公开

EP0144440A4 PROCESS FOR SOLIDIFYING RADIOACTIVE WASTES. 失效
标题翻译：紧固放射性物质的方法。
公开(公告)号：EP0144440A4
公开(公告)日：1985-10-14
申请号：EP84902057
申请日：1984-05-18
申请人： HITACHI LTD
发明人： FUKASAWA TETSUO , OTSUKA MASAHARU , UETAKE NAOHITO , OZAWA YOSHIHIRO
IPC分类号： G21F9/16 , G21F9/30
CPC分类号： G21F9/165 , G21F9/162 , G21F9/302 , G21F9/304

10. 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.

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