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

JPH07280988A PROTECTIVE SYSTEM FOR NUCLEAR POWER PLANT AND OPERATION DECIDING METHOD THEREFOR 失效
公开(公告)号：JPH07280988A
公开(公告)日：1995-10-27
申请号：JP7483894
申请日：1994-04-13
申请人： TOSHIBA CORP
发明人： UDAGAWA KAZUYUKI , SAKAMOTO YASUNORI , NISHIYAMA HIROYUKI , ONO HIROSHI
IPC分类号： G21C17/00 , G21D3/04
摘要： PURPOSE:To realize a protective safety operation of plant upon occurrence of abnormality by providing a section for deciding an abnormality based on various signals from a nuclear power plant, and a section for predicting the operating state of the plant, producing a protective operation command for avoiding stoppage of plant, and then delivering an operation command. CONSTITUTION:The plant protective system 13 takes in various signals from a plant through an abnormality deciding section 14 and a predicting section 15. When such a decision is made that the state of plant is abnormal at the section 14, a countermeasure deciding section 16 predicts and decides a necessary countermeasure operation based on abnormality decision information and predictive information from the section 15. Upon receiving an abnormality decision signal of pump trip at a turbine driven water supply section from the section 14 and predictive information of reduction of water supply to half from the section 15, the section 16 lowers the output of a nuclear reactor depending on the water supply through a countermeasure operation command section 17. Alternatively, protective operation can be effected by deciding whether the countermeasure operation should be effected at a control period or it can be started with some lag.

2. 发明专利

JPH0395495A PRESSURE CONTROLLING METHOD FOR NUCLEAR REACTOR 失效
公开(公告)号：JPH0395495A
公开(公告)日：1991-04-19
申请号：JP23235089
申请日：1989-09-07
申请人： TOSHIBA CORP
发明人： UDAGAWA KAZUYUKI , NISHIYAMA HIROYUKI
IPC分类号： G21D3/00 , G21D3/08
摘要： PURPOSE:To enable suppression of a water level changing of a nuclear reactor by decreasing a pressure changing rate gradually and by getting a target pressure value close to a certain value, when a changing rate of reactor water temperature calculated from a measured value of the reactor water temperature, differs from a predetermined specific value. CONSTITUTION:In case that a pressure setting value is set by an automatic calculator, coolant temperature theta is read in a course of depressurization at a specific time interval and a temperature changing rate theta ' of a coolant is calculated. After that, an absolute value of the changing rate theta ' is compared with the predetermined target value theta '0. When the absolute value of the chang ing rate theta ' is larger than the target value theta '0, a pressure changing rate is made to decrease gradually and a target pressure value is made to get gradually close to a certain value. In this situation, when being shifted from a depressurization process to a constant pressure controlling one, with a constant pressure changing rate, the pressure setting value is made to change gradually by a function of a digital filter. With this reason, a turbine by-pass valve does not close suddenly and therefore a changing of a reactor water level can be well suppressed.

3. 发明专利

JPH01114798A LOAD FOLLOW-UP METHOD FOR NUCLEAR POWER PLANT 失效
公开(公告)号：JPH01114798A
公开(公告)日：1989-05-08
申请号：JP27168187
申请日：1987-10-29
申请人： NIPPON ATOMIC IND GROUP CO , TOSHIBA CORP
发明人： UDAGAWA KAZUYUKI , KAWAKAMI SEISHIRO
IPC分类号： G21D3/12
摘要： PURPOSE:To suppress the excess increase of neutrons at the time of a load follow-up operation so that the scram of a nuclear reactor is prevented and the safe operation is continued by generating the correction signal based on the deviation signal between a reference neutron flux value and a measured neutron flux value when the reference neutron value is exceeded. CONSTITUTION:A recirculation flow rate control system controls an MG set via a reference speed request limiter 17, a speed controller 18, a scoop pipe position regulator 19, etc., by the correction signal obtd. by correcting the deviation of the output of a main controller 16 from the reference value of the neutron flux signal by a corrector 30 and regulates further the recirculation flow rate by controlling the speed of a recirculation pump, thereby suppressing the excessive increase of the neutron fluxes. The corrector 30 is constituted of a filter 31, an adder 32 for determining the deviation signal between the neutron flux signal and the reference value, a limiter 33 and a series dynamic operation compensator 34. The reference value is the value which exists above the value obtd. by superposing a stationary noise width on the rated value of the standardized neutron flux and below the scram level of the reactor.

4. 发明专利

JPS63235898A MULTIVARIABLE CONTROL METHOD AND DEVICE FOR NUCLEAR POWER PLANT 失效
公开(公告)号：JPS63235898A
公开(公告)日：1988-09-30
申请号：JP6801287
申请日：1987-03-24
申请人： NIPPON ATOMIC IND GROUP CO , TOSHIBA CORP
发明人： UDAGAWA KAZUYUKI , ASAMASU AKIRA , NISHIYAMA HIROYUKI , SAITOU SADAHARU
IPC分类号： G21D3/12 , G21D3/00

5. 发明专利

JP2006250898A Water supply system, and water supply control method and device 有权
标题翻译：供水系统和供水控制方法及装置
公开(公告)号：JP2006250898A
公开(公告)日：2006-09-21
申请号：JP2005071760
申请日：2005-03-14
申请人： Toshiba Corp , 株式会社東芝
发明人： INOUE FUMIAKI , UDAGAWA KAZUYUKI , AOKI TOSHIO
IPC分类号： G21D3/00 , G21C17/032 , G21D3/08
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To provide a water supply system, and a water supply control method and device capable of coping with an increase of a rated power generation capacity, without capacity increase modification for a water supply pump.
SOLUTION: This water supply system is provided with turbine-driven water supply pumps 16a, 16b of ordinary use as water supply pumps for supplying water to a nuclear reactor, and electric motor-driven water supply pumps 17a, 17b, one part of the electric motor driving water supply pumps 17a, 17b provided as stand-by pumps is subjected to ordinary use, and a water supply increase required amount corresponding to an increased steam flow rate is supplied to the nuclear reactor 11, in accompaniment to facility modification for increasing a steam generation amount under a rated operation condition, by the stand-by electric motor-driven water supply pump 17a brought into the ordinary use.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种供水系统以及能够应对额定发电能力的增加的供水控制方法和装置，而不需要增加对供水泵的修改。
解决方案：该供水系统具有作为向核反应堆供水的供水泵的普通用途的涡轮驱动供水泵16a，16b，以及电动机驱动的供水泵17a，17b，一部分作为备用泵设置的电动机驱动供水泵17a，17b经常使用，伴随设备改造而向核反应堆11供给对应于增加的蒸汽流量的供水增加所需量用于通过由普通使用的待机电动供水泵17a在额定运行条件下增加蒸汽产生量。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2003114294A MONITOR, DIAGNOSIS, INSPECTION AND MAINTENANCE SYSTEM FOR POWER-GENERATING PLANT 审中-公开
公开(公告)号：JP2003114294A
公开(公告)日：2003-04-18
申请号：JP2001309124
申请日：2001-10-04
申请人： TOSHIBA CORP
发明人： SONODA YUKIO , ENOMOTO MITSUHIRO , HIROSE YUKINORI , UDAGAWA KAZUYUKI , UHARA YOSHIHIKO , HIKUMA KOJI , NAKANO TOMOHITO , SHIMIZU SHUNICHI , NAGASE KOICHI , OKAMURA KIYOSHI
IPC分类号： G01M99/00 , G05B23/02 , G06Q50/00 , G06Q50/06 , G06Q50/10 , G21C17/00 , G21C17/003 , G01M19/00 , G06F17/60
摘要： PROBLEM TO BE SOLVED: To provide a monitor, diagnosis, inspection and maintenance system for power-generating plants capable of having high operability and economical efficiency by collecting plant operation and maintenance field data from a plurality of power-generating plants in maintenance service centers through a network. SOLUTION: The operation data 7 about plants and equipment are monitored by a monitoring means 3, controlled by a control means 5, retrieved and browsed by a retrieving means 4. A transmitting means 15 transmits the operation data 7 and the like to a company 10 providing a maintenance service from the power-generating plants 1, the operation data 7 received by the maintenance service providing company 10 is stored in a storage means 12, and a sub-analysis means evaluates the abnormality, performance and degradation of the plants and the equipment by using the operation data or the like stored in the storage means 12 to determine a maintenance measure. The analysis result and data are displayed in a site by a communicating means 15. The data and the analysis result and the like are encrypted by a security means.

7. 发明专利

JPH02173599A WATER LEVEL CONTROLLER OF MOISTURE SEPARATOR DRAIN TANK 失效
公开(公告)号：JPH02173599A
公开(公告)日：1990-07-05
申请号：JP32994388
申请日：1988-12-27
申请人： NIPPON ATOMIC IND GROUP CO , TOSHIBA CORP
发明人： SATO HITOSHI , UDAGAWA KAZUYUKI , ONO HIROSHI
IPC分类号： G21D1/00 , G21D3/08
摘要： PURPOSE:To stably control a water level of a drainage tank by changing a drainage water-level set value when a drainage water-level rises to the upper limit of a normal control range and changing the set value to a water level set value before the change when the water level becomes a reference water level or below. CONSTITUTION:By adding a water level signal 10 of a normal water level detector 9 to a water level signal 14 of an emergency use water level detector 13, a water level signal 21 corresponding to a wide range water level detector is calculated. By allowing this water level signal 21 to pass through a hysteresis 22, water level setting 23 of an emergency use water level control system is given, and a water level deviation signal 24 is calculated. Also, this signal is allowed to pass through a limiter 25, an emergency use control range is prescribed, and thereafter, by an emergency use control system 15, a linear PID operation is executed. In this case, Lu denotes a value corresponding to the upper limit water level of a normal water level control system 15. A limiter 26 gives a saturation characteristic to an output of the emergency use control system 15, and allowed to have an integral rest wind-up operating function of a PID operation. When a real water level is within a normal control range, a water level set value of the emergency use control system 15 is 2Lu, and a bypass holds a fully closed state.

8. 发明专利

JPS62106393A NEUTRAL FLUX CONTROLLER FOR BOILING WATER TYPE REACTOR 失效
公开(公告)号：JPS62106393A
公开(公告)日：1987-05-16
申请号：JP24638085
申请日：1985-11-05
申请人： NIPPON ATOMIC IND GROUP CO , TOSHIBA CORP
发明人： UDAGAWA KAZUYUKI
IPC分类号： G21C7/26

9. 发明专利

JP2004020540A Method and apparatus for measuring displacement of rotator and method for installing ultrasonic sensor 有权
公开(公告)号：JP2004020540A
公开(公告)日：2004-01-22
申请号：JP2002180253
申请日：2002-06-20
申请人： Tokyo Electric Power Co Inc:The , Toshiba Corp , 東京電力株式会社 , 株式会社東芝
发明人： ARAKAWA KATSUHIRO , HASHIMOTO SATORU , NAKAYAMA SHIGEO , UDAGAWA KAZUYUKI , SATO MICHIO , KANEMOTO SHIGERU , UHARA YOSHIHIKO
IPC分类号： G01B17/00
摘要： PROBLEM TO BE SOLVED: To provide a method and an apparatus for measuring displacements of rotator of performing measurements at some distance from the rotator without being restrained by the conditions of the surface of the rotator and to provide a method for installing an ultrasonic sensor for measuring displacements of the rotator.
SOLUTION: The rotator 9 is placed in a container 5 filled with a liquid 4. Ultrasonic waves are transmitted to the rotator via the container and the liquid. The ultrasonic waves reflected from the rotator are received. This method and the apparatus measures the displacement of the rotator by determining the presence or absence and vibrations of the rotator through waveform computation on the received ultrasonic waves. The ultrasonic waves are transmitted to the rotator via the liquid, and the ultrasonic waves reflected from the rotator via the liquid are received. Then, by determining a location at which the waveform of the ultrasonic echoes reflected from the rotator and the container become maximum, the ultrasonic sensor is installed at the location where the waveform of the ultrasonic echoes become maximum in the method for installing the ultrasonic sensor.
COPYRIGHT: (C)2004,JPO

10. 发明专利

JPH085784A REACTOR WATER-SUPPLY CONTROLLER 失效
公开(公告)号：JPH085784A
公开(公告)日：1996-01-12
申请号：JP13758894
申请日：1994-06-20
申请人： TOSHIBA CORP
发明人： CHIHOSHI ATSUSHI , UDAGAWA KAZUYUKI , ONO HIROSHI , MIURA HIROSHI
IPC分类号： G21D3/00 , G21D3/08
摘要： PURPOSE:To enable controlling water supply rate and suppress the fluctuation of reactor water level by operating a water supply command correction signal with a water supply command correction device based on a unit water inventory estimation device. CONSTITUTION:A water supply controller 20 estimates the change of unit water inventory due to change of void fraction in the reactor pressure vessel with using a unit holding water quantity estimation device 21 with input signals of three signals of water supply rate signal 14a, main steam flow-rate signal 15a and reactor water level signal 16a. A water supply command correction signal 22a for suppressing the change of reactor water level due to the change of unit water inventory estimated with the unit water inventory estimation device 21 is outputted from a water supply command correction device 22. The water supply command signal 20a is obtained as a sum of water supply command signal 17a from a proportional integrator 17 and water supply command correction signal 22a from the water supply command correction device 22. By this, even for the case of a transient change associated with the reactor power change, the change of reactor water level is suppressed and reactor scram is avoided.

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