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

JP2005345158A Boiling water reactor installation and method for renewing it 有权
标题翻译：锅炉水反应堆安装和更新方法
公开(公告)号：JP2005345158A
公开(公告)日：2005-12-15
申请号：JP2004162483
申请日：2004-05-31
申请人： Toshiba Corp , 株式会社東芝
发明人： KURODA MICHITOMO , IIKURA TAKAHIKO , FUJIKI YASUNOBU , ISOGAWA KATSUSHI , SUZUKI SEIJIRO , KAWAMURA SHINICHIRO , KANO YOSHIJI , MUTA HITOSHI
IPC分类号： G21C9/00 , G21C5/00 , G21C7/08 , G21C7/16 , G21C7/26 , G21C15/02 , G21C15/18 , G21C15/243 , G21C17/032 , G21C17/035
CPC分类号： G21C17/032 , G21C17/035
摘要： PROBLEM TO BE SOLVED: To provide a method for renewing a boiling water reactor installation which improves the performance of a plant as well as enhances the safety of it and the installation.
SOLUTION: The boiling water reactor installation in this invention is so constituted that an internal pump 25 which changes the circulation of reactor water from an external circulation structure method to an internal circulation structure method is placed in a downcomer 22 of a reactor pressure vessel 20 during its renewal.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种更新沸水反应器装置的方法，其提高了设备的性能以及提高其安全性和安装性。解决方案：本发明的沸水反应器装置的结构是，将反应器水的循环从外部循环结构方法改变为内部循环结构方法的内部泵25放置在反应器压力的下导管22中船只20在更新期间。版权所有（C）2006，JPO＆NCIPI

2. 发明专利

JPH074386A SHAFT SEAL WATER SUPPLY DEVICE FOR HIGH TEMPERATURE 失效
公开(公告)号：JPH074386A
公开(公告)日：1995-01-10
申请号：JP14647393
申请日：1993-06-17
申请人： TOSHIBA CORP
发明人： IIKURA TAKAHIKO
IPC分类号： F04D29/04 , F04D29/046 , F04D29/08
摘要： PURPOSE:To provide a shaft seal water supply device for a high temperature pump capable of constantly maintaining the supply of shaft seal water regardless of the abnormality or the like of a power source and enabling the guarantee of safety of a plant with the high temperature pump and the improvement of an operation rate. CONSTITUTION:A shaft seal water supply device for a high temperature pomp is provided with one system of feed water piping 29 connecting the water source 28 of a high temperature pump, dealing with high temperature pumped liquid, to a shaft sealing part 26 and having branch pipe parts 29a, 29b, branching in parallel through a branching part 30 and an integrating part 31, at a part on the way; and main feed water mechanism 32 for normal operation provided upstream of the branching part 30 of the feed water piping 29. The shaft seal water supply device is further provided with auxiliary feed water mechanism 34 for emergency operation provided at one branch pipe part 29a and driven by a power source different from the one for the main feed water mechanism 32; contraflow preventing mechanism 35 provided at the other branch pipe part 29b so as to allow the passage of water only from the water source side to the shaft seal part side to prevent the contraflow, and a control device 37 for detecting the operation stop of the main feed water mechanism or the lowering of shaft seal water flow so as to drive the auxiliary feed water mechanism 34 or the contraflow preventing mechanism 35.

3. 发明专利

JPS62217189A RECIRCULATING DEVICE FOR NUCLEAR REACTOR 失效
公开(公告)号：JPS62217189A
公开(公告)日：1987-09-24
申请号：JP5952586
申请日：1986-03-19
申请人： TOSHIBA CORP
发明人： IIKURA TAKAHIKO
IPC分类号： G21C7/26

4. 发明专利

JP2000338289A UNDERWATER PUMP 失效
公开(公告)号：JP2000338289A
公开(公告)日：2000-12-08
申请号：JP14846899
申请日：1999-05-27
申请人： TOSHIBA CORP
发明人： WATANABE SHUNZO , MIKAMI MAKOTO , UCHIDA KEN , SAEKI KIYOBUMI , IIKURA TAKAHIKO , WATABE YUKIO , NARABAYASHI SUNAO
IPC分类号： G21C15/243 , F04D7/08 , F04D29/08 , F04D29/54 , F16J15/00
摘要： PROBLEM TO BE SOLVED: To provide an underwater pump which is made not to give unstable vibration to the pump axis supporting an impeller even if solid adheres and accumulates on the cylinder containing impellers and 4t affects leak flow. SOLUTION: An underwater pump is provided with an inner groove 37 provided on an inner seal part 36 formed with a ring piece 35 fixing outside impellers 33 and a box 30 along the circumference direction of the box 30 side, water introduction grooves 39 crossing the inner groove 37 and extending along the axial direction of a pump axis 31 and pocket grooves 38 connecting with the water introduction grooves 39 and placed intermittently along the circumferential direction on the box 30.

5. 发明专利

JPH11237493A CORE FLOW MEASURING DEVICE 失效
公开(公告)号：JPH11237493A
公开(公告)日：1999-08-31
申请号：JP5420798
申请日：1998-02-20
申请人： TOSHIBA CORP
发明人： OTA YASUO , IIKURA TAKAHIKO
IPC分类号： G21C17/032
摘要： PROBLEM TO BE SOLVED: To measure core flow with sufficient accuracy even in the case the performance of the recirculation pump varies from the initial performance. SOLUTION: Core flow WTpdp is calculated with a WTpdp operation means 18 by PdP method based on the pump differential pressure of a recirculation pump and the predetermined Q-H characteristic curve of the recirculation pump. Core flow WTcpdp is calculated with a WTcpdp operation means 20 by CPdP method based on the core support plate differential pressure in the reactor and reactor power. Core flow WTsp is calculated with a WTsp operation means 22 based on the pressure difference between the pump differential pressure and the core support plate differential pressure and predetermined flow coefficient. Then, correction operation of the core flow WTpdp and core flow WTcpdp is conducted based on the core flow WTsp with a core flow correction means 19.

6. 发明专利

JPH11190791A REACTOR CORE FLOW RATE MEASURING DEVICE 失效
公开(公告)号：JPH11190791A
公开(公告)日：1999-07-13
申请号：JP35956797
申请日：1997-12-26
申请人： TOSHIBA CORP
发明人： KATAYAMA KENJIRO , IIKURA TAKAHIKO , KONDO TAKAHISA
IPC分类号： G21C17/032 , G01F1/86 , G21C17/00
摘要： PROBLEM TO BE SOLVED: To provide the reactor core flow rate measuring device of a boiling water reactor capable of improving the measuring precision of a reactor core flow rate. SOLUTION: The reactor core flow rate measuring device is provided with an operation pump discharge flow rate calculation means 50 for calculating the pump discharge flow rate of a reactor recirculation pump 40 on the basis of a pump revolving speed and a pump part head. Since in the operation pump discharge flow rate calculation means 50 a flow rate - head character showing the relation with the pump part head and the pump discharge flow rate copes with change by reactor water temperature, a plurality of functions indicating the flow rate - head character under a variety of temperature conditions previously obtained by a test are included, and the optimum function is selected according to the reactor water temperature to calculate a pump discharge flow rate.

7. 发明专利

JPH01142499A SHAFT SEAL OPERATION DIAGNOSIS AID APPARATUS FOR REACTOR RECIRCULATION PUMP 失效
公开(公告)号：JPH01142499A
公开(公告)日：1989-06-05
申请号：JP29990987
申请日：1987-11-30
申请人： TOSHIBA CORP
发明人： IIKURA TAKAHIKO
IPC分类号： G21C17/003 , G21C17/00 , G21D3/04
摘要： PURPOSE:To achieve a quick diagnosis of operation and a trouble of a reactor recirculation pump shaft seal device, by citing a data from a knowledge data base to perform deductive inference to obtain the conditions to be considered in diagnosing of operating condition of the shaft seal device. CONSTITUTION:Conditions and operation data inputted by a user from an input unit 1 are inputted in such a manner that an inference device 3 emits an inquiry/ input demand onto a display device 5 as required and answers thereto. The data inputted is stored into a knowledge data base 1 via a data base managing device 2 as a specific operating condition. The inference device 3 uses knowledge obtained from a data base 1 through a data base input processor 6 and the data base managing device 2 based on specified conditions and operation data inputted by a user from an input device 4 to infer the results of operation diagnosis of the shaft seal device.

8. 发明专利

JPS62157281A CAVITATION PREVENTIVE DEVICE 失效
公开(公告)号：JPS62157281A
公开(公告)日：1987-07-13
申请号：JP29344285
申请日：1985-12-28
申请人： TOSHIBA CORP
发明人： IIKURA TAKAHIKO
IPC分类号： F04B11/00 , F04D13/12 , F04D15/00 , F04D29/66
摘要： PURPOSE:To prevent cavitation by comparing a jet pump and a recirculating pump with the pressure and flow characteristic curves of both pumps and running back recirculating pump when the measured values are lower than the curves. CONSTITUTION:Individual pump flows from a jet pump 2 enclosed in an atomic reactor pressure container 1 and a recirculating pump 7 arranged in a recirculating pipe 6 connected to this container 1 are measured by flow measuring devices 20, 21 to generate flow signals 20a, 21a. The flow signal 20a detected by the jet pump 3 and the pressure signal 22a detected by the recirculating pipe 6 are fed to a comparator 24 and are judged whether to meet the jet pump characteristic A. When the pump characteristic is deteriorated from a dot (.) indicating a normal detection value to a circle (O) indicating a cavitation occurrence, a recirculating pump runback signal 25 is generated by the comparator 24. Accordingly, the recirculating pump 7 quickly runs back to prevent a cavitation occurrence.

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