公开(公告)号：JP2013104675A

公开(公告)日：2013-05-30

申请号：JP2011246465

申请日：2011-11-10

Applicant: Toshiba Corp ,  株式会社東芝

Inventor： TAKADA YUKA ,  SHIRAISHI FUJIO ,  ITO TOSHIAKI ,  GOTO YASUSHI ,  ISODA KOICHIRO

IPC: G21C17/035

Abstract: PROBLEM TO BE SOLVED: To provide a technique for detecting a water level in a spent fuel storage pool, capable of reliably detecting the water level even when the water level is lowered due to boiling of pool water.SOLUTION: A water level detection device 20 for a spent fuel storage pool 1 comprises: a gas phase temperature sensor 10(k=0) which detects a temperature above a reference water level c of pool water 4; water level detecting temperature sensors 10(k=1 to n) which detect temperatures below the reference water level c of the pool water 4; and a heat supply part 22 which supplies heat to each of the gas phase temperature sensor and the water level detecting temperature sensors 10(k=0 to n); and a determination part 23 which determines the water level of the pool water 4 on the basis of the detected temperatures T(k=0 to n) of the gas phase temperature sensor and the water level detecting temperature sensors 10(k=0 to n).

Abstract translation: 要解决的问题：提供一种用于检测乏燃料储存池中的水位的技术，即使当由于池水的沸腾而导致水位下降时，也能够可靠地检测水位。 解决方案：用于乏燃料储存池1的水位检测装置20包括：气相温度传感器10（k = 0），其检测温度高于 游泳池水4的参考水位c; 检测低于游泳池水4的基准水位c的温度的水位检测温度传感器10 k（k = 1〜n） 以及向各气相温度传感器和水位检测温度传感器10（k = 0〜n）供给热量的供热部22。 以及基于气相温度传感器的检测温度T （k = 0〜n）来决定池水4的水位的判定部23，以及 水位检测温度传感器10（k = 0〜n）。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2000314302A

公开(公告)日：2000-11-14

申请号：JP12651899

申请日：1999-05-07

Applicant: TOSHIBA CORP

Inventor： ISODA KOICHIRO

IPC: F01L31/00 ,  F01D21/00

Abstract: PROBLEM TO BE SOLVED: To smoothly recover a steam valve to a fully opened position when force of a spring for recover action is shortened by arranging a first solenoid for closing action and a second solenoid for opening action on a test solenoid valve for shutting out high pressure control oil to the steam valve, when the steam valve is closed. SOLUTION: At testing the action of a main steam stop valve 2, a steam valve closing command is outputted from a control circuit 18, a first solenoid 23 of a testing solenoid valve 21 is excited, and a second solenoid 24 is held under an unexcited state. High pressure control oil O is not supplied from a port of the testing solenoid valve 21 to the main steam stop valve 2, and the main steam stop valve 2 is closed. At recovery of motion, the first solenoid 23 is unexcited by a steam valve closing command, and the second solenoid 24 is excited. The high pressure control oil O makes flow from the port of the testing solenoid valve 21 into the main steam stop valve 21, and the main steam stop valve 2 is opened. Namely, the main steam stop valve 2 is recovered to the condition prior to the operation test is started.

公开(公告)号：JPH0960809A

公开(公告)日：1997-03-04

申请号：JP23901895

申请日：1995-08-25

Applicant: TOSHIBA CORP

Inventor： ISODA KOICHIRO

IPC: F22D5/26

Abstract: PROBLEM TO BE SOLVED: To enable operation with the same number of low pressure condensate pumps and high pressure condensate pumps by locking a logic signal indicating the starting state of a high pressure condensate pump to prevent malfunctioning of a number of unit unbalance logic means when a loss of a power source occurs in the high pressure condensate pumps in the starting of the high pressure condensate pumps. SOLUTION: Lock means 35a-35c lock a logic signal indicating the starting state of high pressure condensate pumps 4-6 with respect to a starting signal of the high pressure condensate pumps 4-6 when a loss of a power source occurs in the high pressure condensing pumps 4-6. The lock means 35a-35c are made up of a wipeout circuit WO comprising a NOT circuit and an AND circuit and a logic value obtained by inputting a logic value at which a power source loss signal is inputted into the NOT circuit and a logic value of a starting signal into an AND circuit is inputted into a second logic circuit 19. The power source loss signal is inputted into a central processing unit of a digital controller by a fast input/output means thereby locking the starting signal of the high pressure condensate pumps 4-6.

公开(公告)号：JPH0821203A

公开(公告)日：1996-01-23

申请号：JP15359294

申请日：1994-07-05

Applicant: TOSHIBA CORP

Inventor： TAHIRA MASAYOSHI ,  ISODA KOICHIRO ,  NAKAMURA SHIGEO

IPC: F01D17/24 ,  G01L7/00 ,  G21C17/02

Abstract: PURPOSE:To provide a pressure controller by which switching of two types of pressure detectors can be smoothly performed. CONSTITUTION:Two types of steam pressure detectors having different measuring ranges of narrow ranges and wide ranges, a bias generator 26 for generating the specific bias, and switching devices 32, 27, 28 for selectively outputting a bias signal output from the bias generator 26 into a narrow range side change rate limiter 29 or a wide range side change rate limiter 30 are provided. Moreover, a pressure controller is provided with a narrow range side adder 24 and a wide range side adder 25 for respectively adding output signals from both change rate limiters 29, 30 to the pressure signal detected by the detector, and a high value preceding circuit 31 for outputting a high value signal out of signal outputs from both adders as the pressure signal.

公开(公告)号：JP2014089520A

公开(公告)日：2014-05-15

申请号：JP2012238088

申请日：2012-10-29

Applicant: Toshiba Corp ,  株式会社東芝

Inventor： SUYAMA SUMI ,  SUGIYAMA NORIYUKI ,  ISODA KOICHIRO ,  KANEZAKI SEIJI

IPC: G05B23/02

Abstract: PROBLEM TO BE SOLVED: To provide an instrument normality maintaining device and an instrument normality maintaining method capable of maintaining the normality of instrument during plant operation for long time.SOLUTION: An instrument normality maintaining device 20B includes: instrument abnormality determination means 40 that determines the normality/abnormality of n instruments 9-1, ..., 9-n; and instrument piping cleaning control means 50 that controls ON/OFF switching operation of a line and a cleaning pump 4 for supplying a cleaning liquid to instrument piping as a determination target of the normality/abnormality, in which at least a part thereof is multiplexed and four-way valves 3a, 3b which are disposed at the inlet and the outlet of the multiplexed portions; especially to the multiplexed portions where the pressure difference between the inlet side and the outlet side is larger than a predetermined value to thereby clean the duplexed portions in the instrument piping.

Abstract translation: 要解决的问题：提供一种仪器正常维持装置和仪器正常维持方法，能够在工厂运行期间长时间保持仪器的正常性。解决方案：仪器正常维护装置20B包括：仪器异常确定装置40，其确定 n仪器9-1，...，9-n的正常/异常; 以及管线的开/关切换操作的仪器管道清洁控制装置50和用于向仪器管道供应清洗液的清洁泵4作为其至少一部分被复用的正常/异常的确定目标， 设置在多路复用部分的入口和出口处的四通阀3a，3b; 特别是在入口侧和出口侧之间的压力差大于预定值的多路复用部分，从而清洁仪器管道中的双面部分。

公开(公告)号：JPH07175457A

公开(公告)日：1995-07-14

申请号：JP34327893

申请日：1993-12-17

Applicant: TOSHIBA CORP

Inventor： ISODA KOICHIRO ,  YAMAMOTO KAZUFUMI ,  IIZUKA WAHEI

IPC: G09G5/00

Abstract: PURPOSE:To provide the information associated with generation of an alarm and to enable rapid operation to make remedy by specifically displaying an abnormal plant apparatus on a display device, taking the information associated with the abnormal plant apparatus out of means for storing the an associated information and displaying this associated information together with the specific display of the abnormal plant apparatus on the display device. CONSTITUTION:An auxiliary machinary valve information control section 7 announces an auxiliary machinary valve 6 selected by a display operation device 4 to a section 9 for storing the information on auxiliary machinary valve arrangement, a section 10 for storing the information on the power sources of the auxiliary machinary valves and a section 11 for storing the information on the repair of the auxiliary machinary valves and takes out the information on the corresponding information auxiliary machinary valve 6 when the auxiliary machinary valve 6 described above is announced via a display operation control section 2. A section 8 for processing the information on the remedy at the time of the abnormality announces the information on the remedy at the time of the abnormality corresponding to the abnormality information L and the abnormality information L to the display operation control section 2 and displays the contents thereof on the display operation device 4. The auxiliary machinary valve 6 desired to be displayed and operated is announced via the display operation control section 2 to the auxiliary machinary valve information control section 7 when this auxiliary machinary valve 6 is selected by the display operation device 4.

公开(公告)号：JPH07139704A

公开(公告)日：1995-05-30

申请号：JP28714893

申请日：1993-11-17

Applicant: TOSHIBA CORP

Inventor： ISODA KOICHIRO

IPC: F22D1/28

Abstract: PURPOSE:To keep the water level of a deaerator at a level necessary for starting a plant in a plant stop time by a method wherein a deaerator regulating valve bypass valve is regulated when a normal-water level detecting switch is not operated. CONSTITUTION:When the water level of a deaerator 16 is reduced from a nomal water level and the manual operation of a deaerator water level regulating valve bypass valve 9 is not effected during stopping a power generating plant, an output signal obtained in a NOT circuit through an manual operator is established whereby the deaerator water level regulating valve bypass valve 9 is operated into the opening direction thereof. In this case, the deaerator water level regulating valve bypass valve 9 is opened to the specified opening thereof. Then, a specified period of time elapsing timer is operated to close the deaerator water level regulating valve bypass vaove 9 fully. In this case, the specified period of time means a period of time necessary for filling the deaerator 16 to a normal water level by condensed water.

公开(公告)号：JP2013104791A

公开(公告)日：2013-05-30

申请号：JP2011249076

申请日：2011-11-14

Applicant: Toshiba Corp ,  株式会社東芝

Inventor： GOTO YASUSHI ,  TAKADA YUKA ,  SHIRAISHI FUJIO ,  ISODA KOICHIRO ,  ITO TOSHIAKI

IPC: G01F23/22 ,  G01K1/14

CPC classification number: G01F23/246 ,  G01F22/00 ,  G01F23/22 ,  G01K1/026 ,  G01K7/04 ,  G01K13/00 ,  G01K15/007 ,  G21C17/035 ,  G21C17/112 ,  G21C19/07

Abstract: PROBLEM TO BE SOLVED: To provide a water level and temperature measuring device capable of obtaining a detection and measurement result of a water level and a temperature having a degree of reliability higher than that of a prior art.SOLUTION: A water level and temperature measuring device 10 comprises: means for receiving n pieces of water level information and n pieces of temperature information from a plurality of n pieces of water level temperature detecting devices 11 each of which is provided with a thermo-couple and a heater wire and for measuring n pieces of water levels and temperatures; means for determining whether or not detection function of the water levels and the temperatures is lost on the basis of electrical physical quantity acquired from each thermo-couple and each heater wire; and means for performing arithmetic processing obtaining at least one water level measurement result and one temperature measurement result by using n pieces of water level measurement results and temperature measurement results, a determination result of loss of water level detection function and a determination result of loss of temperature detection function.

Abstract translation: 要解决的问题：提供能够获得具有比现有技术更高的可靠度的水位和温度的检测和测量结果的水位和温度测量装置。 解决方案：水位和温度测量装置10包括：用于从多个n个水位温度检测装置11接收n个水位信息和n个温度信息的装置，每个水位温度检测装置11设置有 热电偶和加热线，用于测量n个水位和温度; 用于基于从每个热电偶和每个加热丝获得的电物理量来确定水位和温度的检测功能是否丢失的装置; 以及用于通过使用n个水位测量结果和温度测量结果来执行算术处理获得至少一个水位测量结果和一个温度测量结果的装置，水位检测功能的损失的确定结果和丢失的确定结果 温度检测功能。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2013104749A

公开(公告)日：2013-05-30

申请号：JP2011247958

申请日：2011-11-11

Applicant: Toshiba Corp ,  株式会社東芝

Inventor： SHIRAISHI FUJIO ,  ISODA KOICHIRO

IPC: G21C17/035

Abstract: PROBLEM TO BE SOLVED: To provide a water level and temperature measurement facility for a nuclear reactor containment vessel, capable of measuring presence or a fluid level (water level) of coolant and temperature in a reactor containment vessel even when the coolant such as water or sea water builds up in the reactor containment vessel due to a severe accident of a nuclear power plant.SOLUTION: A water level and temperature measurement facility for a nuclear reactor containment vessel includes a nuclear reactor containment vessel 3 which accommodates a reactor pressure vessel 2, and a plurality of temperature gauges 4 deployed inside the reactor containment vessel 3 along the height direction thereof to measure temperatures inside the reactor containment vessel 3. While temperature inside the reactor containment vessel 3 is being detected by each of the temperature gauges, a temperature value detected by each temperature gauge 4 is compared with a temperature value that should be detected when the temperature gauge is submerged in coolant such as water to check for presence of coolant inside the reactor containment vessel 3.

Abstract translation: 要解决的问题：为了提供用于核反应堆安全壳的水位和温度测量设备，其能够测量反应堆安全壳中的冷却剂和温度的存在或液位（水位），即使当冷却剂 由于核电站的严重事故，水或海水堆积在反应堆安全壳内。 解决方案：用于核反应堆安全壳的水位和温度测量设备包括容纳反应堆压力容器2的核反应堆安全壳3和沿着高度设置在反应堆容纳器3内的多个温度计4 方向来测量反应堆容纳器3内的温度。当每个温度计都检测反应堆容器3内的温度时，将每个温度计4检测到的温度值与应当检测的温度值进行比较 温度计淹没在诸如水的冷却液中，以检查反应堆容纳容器3内的冷却剂的存在。（C）2013年，JPO和INPIT

公开(公告)号：JPH07279619A

公开(公告)日：1995-10-27

申请号：JP7302994

申请日：1994-04-12

Applicant: TOSHIBA CORP

Inventor： YAMAMOTO KAZUFUMI ,  ISODA KOICHIRO ,  IIZUKA WAHEI

IPC: F01K17/04

Abstract: PURPOSE:To increase the degree of accuracy of pressure regulating control required to be taken into consideration at the time of storing heaters, and simplify an operating circuit. CONSTITUTION:In this feedwater heater storage system, a pressure control valve 6 for regulating the pressure of steam is provided on an auxiliary steam piping for supplying auxiliary steam from an auxiliary mother steam, pipe 1 to a deaerator. Further, the feedwater heater storage system consists of a piping for feeding steam from the deaerator 2 to high pressure/low pressure feedwater heaters, and steam sealed valves 15, 16 provided on the Piling. Thus, the monitoring spot is simplified to improve the operating efficiency and reduce the burden on the operator.