专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH0565900A STEAM INJECTOR 失效
公开(公告)号：JPH0565900A
公开(公告)日：1993-03-19
申请号：JP22701891
申请日：1991-09-06
申请人： TOSHIBA CORP
发明人： NARABAYASHI SUNAO , MIYANO HIROSHI , OZAKI OSAMU , MIZUMACHI WATARU , TANABE AKIRA , TONEGAWA REI , SHIOIRI AKIO
IPC分类号： F04F5/24 , F04F5/36
摘要： PURPOSE:To obtain a large capacity of water injection at a high delivery pressure by a boosting diffuser and also a supply steam flow amount can be set to an optimum value by respectively supplying center steam to a center steam nozzle, water to a water nozzle and peripheral steam to a steam/water mixing nozzle, in a casing. CONSTITUTION:A center steam nozzle 25 and a hollow water nozzle driving shaft 26 are concentrically arranged on an upper part in a tubular casing 24 to form a water nozzle 26a on a point end part of the shaft 26. A peripheral steam supply pipe 35 is mounted on a side surface of the casing 24 below a guide metal 34 interposed between an internal surface of the casing 24 and an external surface of the shaft 26, and a steam/water mixing nozzle 36 is mounted on the internal surface of the casing 24 downward from this supply pipe 35 so as to surround the water nozzle 26a. A throat 37 is mounted on a lower end of this nozzle 36, and a boosting diffuser 38 is mounted on a lower end of the throat 37 to connect a delivery pipe 54 to a lower end of the casing 24 and a supply water pipe 55, connected to the water nozzle 26a, to an upper part side surface of the casing 24.

2. 发明专利

JPH03233200A STEM INJECTOR SYSTEM 失效
公开(公告)号：JPH03233200A
公开(公告)日：1991-10-17
申请号：JP2526190
申请日：1990-02-06
申请人： TOSHIBA CORP
发明人： ISHIYAMA TAKENORI , NARABAYASHI SUNAO , NEI HIROMICHI , TONEGAWA REI
IPC分类号： F04F5/26 , F04F5/50 , F04F5/54
摘要： PURPOSE:To enlarge an operating range under a high discharge pressure by connecting a water supply port of a second stage steam injector to a discharge port of a first stem injector, and connecting a water supply port of the first steam injector to a water container. CONSTITUTION:Water is supplied from a water container 100 to a first stage steam injector 102 via a first stage water supply port 103. The water is supplied from a first stage discharge port 104 to a second stage steam injector 106 through a second water supply port 105. When steam is supplied from a boiler 108 and the second stage steam injector 106 is operated, high pressure water is discharged from a second stage discharge port 107. Therefore, it is possible to provide a steam injector system having a high discharge pressure and a large operating range.

3. 发明专利

JPH03229196A NUCLEAR POWER PLANT 失效
公开(公告)号：JPH03229196A
公开(公告)日：1991-10-11
申请号：JP2448490
申请日：1990-02-05
申请人： TOSHIBA CORP
发明人： SAITO NOBORU , NARABAYASHI SUNAO , OKUZUMI NAOAKI , TONEGAWA REI
IPC分类号： G21C15/18 , F02B3/06
摘要： PURPOSE:To secure an autonomous safe state in any event by connecting a steam suction pipe to the dry well of a neuclear reactor container and connecting this steam suction pipe to the steam suction pipe of a steam injector through a solenoid valve. CONSTITUTION:The steam injector 26 has its steam suction pipe 32 for operation coupled with the nuclear reactor container 6 through an operating valve 33 with a large time constant and the suction pipe 34 and a deliverly pipe 35 form a closed loop together with a hydraulic turbine 30 and a heat exchanger 31. Therefore, a fuel pool 36 installed above the steam injector 26 is used as a water source in case of a cooling material losing accident or abnormal transi tion to drive the hydraulic turbine 30 with the energy of steam put in the nuclear reactor, so that emergency electric power is supplied by a power genera tor which is coupled with the turbine. Consequently, the power for an emergency reactor core system, a control rod driving system, a nuclear reactor cooling material purification system, an in-isolation cooling system, a residual heat removal system, etc., is secured and the plant need not depend upon the reliabil ity of a diesel power generator in case of an accident.

4. 发明专利

JPH0375593A NUCLEAR POWER PLANT 失效
公开(公告)号：JPH0375593A
公开(公告)日：1991-03-29
申请号：JP21058889
申请日：1989-08-17
申请人： TOSHIBA CORP
发明人： NARABAYASHI SUNAO , NEI HIROMICHI , TANABE AKIRA , TONEGAWA REI
IPC分类号： G21C1/08 , G21C15/18 , G21C15/25 , G21C15/26
摘要： PURPOSE:To promote natural circulation of coolant to a reactor core, to simplify the system and to improve the safety by spouting water delivered from a steam injector connected to a nuclear reactor pressure vessel, to a down comer in the vessel. CONSTITUTION:Steam heated at the reactor core 1 in a nuclear reactor pressure vessel 2, is transferred to a turbine 7 where it is used as an energy source and then is transferred to a main condenser 9. To the outlet side of the condenser 9, a steam injector 10 for water supply, is connected and in the upstream of a water supply pipe 13, a recirculation injector 14 is provided for a downcomer in the vessel. The injection 10 and 14 are actuated by steam supply from a main steam pipe 8, for instance, and supplies coolant to the vessel 2 of the condenser 9 and also spouts high pressure coolant into the downcomer in the vessel 2, thus cooling down the reactor core 1 through recirculation. In this way, by feeding water to each system utilizing the steam injections 10, 14, 19, 24 and 26 which do not require an external power supply and have no moving parts, the system can be simplified and the size of the building can be reduced and finally the safety can be much improved.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式