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1. 发明专利

JP2020089845A 沈殿槽审中-公开
公开(公告)号：JP2020089845A
公开(公告)日：2020-06-11
申请号：JP2018229377
申请日：2018-12-06
申请人： TOSHIBA CORP , TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORP
发明人： KON MASAO , KOSHIRO KAZUTAKA , OTSUKI NOBUHIRO , NAKAMURA KENSUKE , YAMAZAKI ATSUSHI , TAKAHASHI HIDEAKI
IPC分类号： B01D21/02 , B01D21/06 , B01D21/24
摘要：【課題】沈降分離性能を向上させることができる沈殿槽を提供することである。【解決手段】実施形態の沈殿槽は、槽体と、流入管と、複数の分散板と、を持つ。流入管は、前記槽体の内側において前記槽体の中心軸に沿って配置される。複数の分散板は、前記流入管の下方において上下方向に並んで配置される。前記複数の分散板の上面は、前記流入管の径方向の内側から外側にかけて下方に傾斜する。前記複数の分散板の外周は、前記流入管の内周より前記径方向の外側に配置される。【選択図】図1

2. 发明专利

JP2020089848A 濾過装置および濾材流出抑制ユニット审中-公开
公开(公告)号：JP2020089848A
公开(公告)日：2020-06-11
申请号：JP2018229447
申请日：2018-12-06
申请人： TOSHIBA CORP , TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORP
发明人： HU JINYANG , MENJU TAKU , IDE KENJI , TAKAHASHI HIDEAKI , NAKAMURA KENSUKE , SHIROTA AKIHIKO , KOSHIRO KAZUTAKA , SHIGENIWA SHINOBU , UCHIDA TATSUAKI , KON MASAO , YAMAZAKI ATSUSHI , FUKAGAWA SHIGENORI
IPC分类号： B01D24/46 , B01D24/00 , B01D29/66
摘要：【課題】濾材の流出抑制性能の向上を図ることができる濾過装置および濾材流出抑制ユニットを提供することである。【解決手段】実施形態の濾過装置(20)は、濾過槽(100)と、逆洗部(200)と、濾材流出抑制機構(300)とを持つ。前記濾過槽(100)は、濾材(M)が収容され、被処理水が下降流で流れることで濾過が行われる。前記逆洗部(200)は、前記濾過槽(100)の下部に空気および洗浄水を供給して逆洗を行う。前記濾材流出抑制機構(300)は、少なくとも前記濾過が行われる状態で前記濾材(M)よりも上方に位置し、逆洗時に前記濾材中から排出される気泡を小さくする。【選択図】図1

3. 发明专利

JPH05126098A STEAM INJECTOR 失效
公开(公告)号：JPH05126098A
公开(公告)日：1993-05-21
申请号：JP28492491
申请日：1991-10-30
申请人： TOSHIBA CORP
发明人： TAKAHASHI HIDEAKI
IPC分类号： F04F5/24 , F04F5/36
摘要： PURPOSE:To prevent a deterioration in performance caused by the abrasion of an inner wall surface and to improve reliability by forming an abrasive- resistant wall by an abrasive-resistant material on each inner face of a steam.water mixing nozzle intercommunicating with the downstream side of a water supply nozzle. a throat, and a pressuring rising diffuser. CONSTITUTION:A needle valve 4-equipped water supply nozzle 5 is provided in a casing 3 having a steam supply port 1. A steam injection nozzle 6 is formed between the water supply nozzle 5 and the casing 3. A steam water.mixing nozzle 7, a throat 8, and a pressure rising diffuser 9 are provided at the downstream side of the steam injection nozzle 6. The above configuration forms an abrasive-resistant wall 11 by an abrasive-resistant material on each inner surface of the steam.water mixing nozzle 7, the throat 8, and the pressure rising diffuser 9. This applies to emergency reactor core cooling system water injection equipment in a nuclear reactor etc. No deterioration in performance caused by the abrasion of an inner wall surface exists. A steam injector having high reliability is available.

4. 发明专利

JPH05119187A MAIN STEAM ESCAPE VALVE 失效
公开(公告)号：JPH05119187A
公开(公告)日：1993-05-18
申请号：JP27571791
申请日：1991-10-23
申请人： TOSHIBA CORP
发明人： TANAKA NOBUHIKO , NARABAYASHI SUNAO , SAITO NOBORU , SHIMADA YOJI , TAKAHASHI HIDEAKI
IPC分类号： G21D1/00
摘要： PURPOSE:To improve the reliability by reducing the influence of a load and vibration from the outside. CONSTITUTION:In the titled valve, the main steam valve 20 constituting the steam system of a light water reactor and an exhaust pipe 21 are connected, and the steam pressure of the pipe 20 is controlled below the set popping pressure. Load-vibration absorbing means 30, 31 are provided at the joints of the valve box 1 and the pipes 20, 21, and the load and vibration transmitted from the outside are absorbed by these means 30, 31.

5. 发明专利

JPH0552989A MAIN STEAM ISOLATION VALVE 失效
公开(公告)号：JPH0552989A
公开(公告)日：1993-03-02
申请号：JP21726891
申请日：1991-08-28
申请人： TOSHIBA CORP
发明人： YAMADA KATSUMI , MIYANO HIROSHI , YAMAMOTO TETSUZO , TAKAHASHI HIDEAKI , SAITO NOBORU
IPC分类号： G21D1/00
摘要： PURPOSE:To obtain a main steam isolation valve preventing the movement of the valve disc by the fluid force during full opening of the valve. CONSTITUTION:The valve disc 12 assembled in the valve casing 11 of a main steam isolation valve moves toward 45 degree inclination against the main steam line 6. The valve disc 12 and an air cylinder 14 are connected with a valve shaft 19. When the air cylinder 14 is moved to the direction of valve closing, the valve disc 12 sits on the valve seat 20 and close the valve. When the air cylinder 14 is moved to the direction of valve opening, the upper end of the valve disc 12 touches the valve lid 13 and opens the valve. At this moment, the valve disc 12 is pushed with a constant force to the valve lid 13 by the air cylinder 14. Therefore, the valve disc does not move even with the fluid force on the valve disc 12.

6. 发明专利

JPH04181200A MAIN STEAM FLOW METER FOR NUCLEAR REACTOR 失效
公开(公告)号：JPH04181200A
公开(公告)日：1992-06-29
申请号：JP30702190
申请日：1990-11-15
申请人： TOSHIBA CORP
发明人： YAMAMOTO TETSUZO , NARABAYASHI SUNAO , UEHARA AKIO , YOSHINO KOICHI , KOMITA HIDEO , USU MASAJI , TOGASAWA YUTAKA , SAITO NOBORU , TAKAHASHI HIDEAKI , ENDO TAKIO
IPC分类号： G21C17/032 , G21D1/00
摘要： PURPOSE:To enable diminution of losing amount of coolant, and to intend compact sizing of a containment vessel and a nuclear reactor building, and improvement of safety by making a main steam line nozzle of nuclear reactor pressure vessel to be a contraction part thereof. CONSTITUTION:Steam generated in a reactor core 21 of nuclear reactor pressure vessel 2 which is contained in a nuclear reactor containment vessel 1, is fed to a steam turbine through a main steam pipe 2. By making a shape of main steam line nozzle 43 of this main steam pipe 3 to be of a shape corresponding to a contraction part 41 of a venturi flow meter 8 and a throat part 42, and a main steam flow meter element 4 is constituted of the nozzle, to which a diffuser pipe 44 is directly connected. By the element 4 utilizing this nozzle 43, volume of the vessel 1 is reduced and an amount of discharging steam during a rupture accident of the main steam pipe 3, is substantially reduced and thereby further volume reduction of the vessel 1 and improvement of safety can be well intended.

7. 发明专利

JPH0275790A INTERNAL PUMP 失效
公开(公告)号：JPH0275790A
公开(公告)日：1990-03-15
申请号：JP22644788
申请日：1988-09-12
申请人： TOSHIBA CORP
发明人： TAKAHASHI HIDEAKI
IPC分类号： F04D29/10 , F04D7/08 , F04D29/22
摘要： PURPOSE:To prevent accumulation of radiated clad in a pump casing 3 and to reduce a dose of exposure of a worker to radiation during periodic inspection by a method wherein an auxiliary blade is formed to the lower end of a pump impeller and reactor water is prevented from flowing in the inner cylinder of a diffuser. CONSTITUTION:A pump impeller 8 adapted to circulate a coolant is mounted to the upper and of a pumps shaft 7 inserted through a pump casing, and an auxiliary blade 16 is formed to the lower and of the pump impeller 8. Reactor water is introduced from a position above the pump impeller 8 and drained to below through rotation of the pump shaft 7, and simultaneously the auxiliary blade 16 generates a flow in a circumferential direction. The flow enables suppression of the generation of a vortex when purge water coming out through a gap between the pump impeller 8 and an inner cylinder 11 of a diffuser 9 is joined with reactor water. Radiated clad in reactor water flows in the inner cylinder of the diffuser and is suppressed from accumulation in the pump casing, and a radiation exposure dose of a motor part can be reduced.

8. 发明专利

JPS61148362A DECISION ON AGING IN CHROME-MOLYBDENUM STEEL 失效
公开(公告)号：JPS61148362A
公开(公告)日：1986-07-07
申请号：JP26989584
申请日：1984-12-21
申请人： HIDEAKI TAKAHASHI , SHOJI TETSUO , IDEMITSU KOSAN CO , TOSHIBA CORP
发明人： TAKAHASHI HIDEAKI , SHOJI TETSUO , YAEGASHI AKIRA , MATSUO KENNOSUKE
IPC分类号： G01N27/26 , G01N17/02 , G01N33/20
摘要： PURPOSE:To decide on aging in Cr.Mo steel non-destructively and at a high accuracy, by employing an aqueous solution with a specified composition of picric acid, dodecyl sodium benzenesulfonate of dimethyl sodium benzenesulfonate as an electrolytic liquid. CONSTITUTION:An aqueous solution containing 0.15-0.16wt.% of picric acid and 0.07-0.3wt.% of dodecyl sodium benzenesulfonate or demithul sodium benzenesulfonate or dimethyl sodium benzenesulfonate is used as electrolytic liquid for decision on aging caused by the high temperature use of Cr.Mo steel. After immersed into the electrolytic liquid for about five minute, a sample electrode of Cr.Mo steel to be measured is swept in the reverse direction from the natural potential A and after held for two minute at the passivity potential C, it is swept reversely at the same speed again to measure the maximum D of current density in a polarization curve. The maximum D is called as minimum current density D. The value D in creases with aging and has a high correlation with Charpy fracture transition temperature. This enables non- destructive measurement of aging non-destructively in a short time at a high density and at a high accuracy.

9. 发明专利

JPH07269460A VOLUTE PUMP 失效
公开(公告)号：JPH07269460A
公开(公告)日：1995-10-17
申请号：JP6243794
申请日：1994-03-31
申请人： TOSHIBA CORP
发明人： HAGIWARA TAKESHI , MOTAI KATSUHIKO , MIYANO HIROSHI , NIWA HIROSHI , FUJIMOTO SHIGERU , AIDA YASUHIKO , SAITO NOBORU , HATTORI YASUSHI , KATAYAMA HIROSHI , TAKAHASHI HIDEAKI , MIYAGAWA TAKUYA
IPC分类号： F04D15/00 , F04B11/00 , F04D13/14
摘要： PURPOSE:To reduce the generation of pressure pulsation by means of the counter action of pulsation due to a combination of two volute pumps and any interfer ence of the pulsation in a beam installed in a casing and a blade pitch of an impeller. CONSTITUTION:This pumping plant consists of two pulsation sensors 14a and 14b, connecting both discharge ports of two volute pumps 1a and 1b to each other in a lump with a common pipeline at the downstream side, and installed at the discharge side of these pumps la and 1b, and a phase controller 15 operating and controlling these volute pumps 1a and 1b so as to make the pulsation of a discharge fluid turn to an opposite phase from each output signal out of these sensors 14a and 14b, respectively.

10. 发明专利

JPH07113893A JET PUMP FOR BOILING WATER REACTOR 失效
公开(公告)号：JPH07113893A
公开(公告)日：1995-05-02
申请号：JP26094993
申请日：1993-10-19
申请人： TOSHIBA CORP
发明人： SAITO NOBORU , MOTAI KATSUHIKO , MIYANO HIROSHI , NIWA HIROSHI , FUJIMOTO SHIGERU , HATTORI YASUSHI , KATAYAMA HIROSHI , MANOME EIJI , TAKAHASHI HIDEAKI , MIYAGAWA TAKUYA , OGIWARA TAKESHI
IPC分类号： G21C15/25
摘要： PURPOSE:To improve safety of reactor in normal operation by selecting the outer diameter of an instrumentation pipe of jet pump so that the natural frequency of the instrumentation pipe avoids the resonance frequency zone in normal operation. CONSTITUTION:Instrumentation pipes 24 for each jet pump are fixed at welding parts 27 fillet-welded to support metals 26 of a rectangular paralelopiped on the outer surface of diffusers 20 put on a baffle plate. At the horizontal pipe 24, a plurality of pipes 24 capable of sliding to absorb the bend due to thermal expansion are supported with support metals. By selecting the outer diameter of the pipes 24 at 27, 2mm or more, the natural frequency can be avoided from the resonance frequency zone. That is, pressure pulse frequency of the natural frequency corresponding to 100% of recirculation pump revolution can be generated. Also, support part 26 suffers only stress due to forced vibration, which is kept below the fatigue limit stress and thus, damage on the welding parts 27 is prevented.

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