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

JPH09166678A MOX FUEL ASSEMBLY 失效
公开(公告)号：JPH09166678A
公开(公告)日：1997-06-24
申请号：JP32721595
申请日：1995-12-15
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： SUZUKI TATSUO , IZUTSU SADAYUKI , FUJITA SATOSHI , MOCHIDA TAKAAKI
IPC分类号： G21C3/30 , G21C3/326 , G21C3/328 , G21C3/62
摘要： PROBLEM TO BE SOLVED: To provide a MOX fuel assembly capable of improving the utility of plutonium by reducing the number of fuel rods without lowering the negative reactivity worth of whole fuel rods containing gadolinia and replacing the portion of the reduction of the gadolinia containing fuel rods with MOX fuel rods. SOLUTION: In the same line and neighboring row or the same row and neighboring line for 7 fuel rods replaced for arranging water rods in the fuel rods 15 arranged in 9 by 9 matrix, 6 uranium fuel rods 15b containing gadolinia are positioned. In the other position, 68 MOX fuel rods 15a are arranged. In this configuration, two groups of 3 uranium fuel rods 15b containing gadolinia being adjacent to each other are arranged in the diagonal direction in the 9 by 9 matrix putting 2 water rods 13, 13 in between.

2. 发明专利

JPS56162086A METHOD OF OPERATING BWR TYPE REACTOR 失效
公开(公告)号：JPS56162086A
公开(公告)日：1981-12-12
申请号：JP6535480
申请日：1980-05-19
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： SUZUKI TATSUO
IPC分类号： G21C7/08

3. 发明专利

JPS5555284A FUEL ASSEMBLY 失效
公开(公告)号：JPS5555284A
公开(公告)日：1980-04-23
申请号：JP12843178
申请日：1978-10-20
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： ENOMOTO MASAMI , SUZUKI TATSUO
IPC分类号： G21C3/324 , G21C3/32

4. 发明专利

JP2000193773A FUEL ASSEMBLY 失效
公开(公告)号：JP2000193773A
公开(公告)日：2000-07-14
申请号：JP37281398
申请日：1998-12-28
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： MIYA KAZUHISA , SUZUKI TATSUO , IZUTSU SADAYUKI , FUJIMAKI SHINGO
IPC分类号： G21C3/328 , G21C3/326
摘要： PROBLEM TO BE SOLVED: To improve the ratio recovered uranium used in a fuel assembly by using the recovered uranium obtained through the reprocessing of a used fuel for a fuel pellet containing a burnable poison such as gadolinia in the fuel assembly. SOLUTION: A fuel assembly has a natural uranium blanket at upper and lower ends. Fuel pellets of the highest enrichment are used for A in the enrichment distribution of fuel rods 11 and, after A, the enrichment of fuel pellets in descending order is: B, C, D and E. Types of a fuel are classified into 1 to 5 according to the difference of the enrichment distribution of each fuel rod. A type P of fuel rods are short fuel rods and a type G of them are fuel rods of gadolinia, a burnable poison. The fuel assembly also has water rods 16. If recovered uranium is used only for the gadolinia fuel rods, the ratio of the used recovered uranium in volume is about 15%. Moreover, all fuel rods are made of recovered uranium by using it for all other uranium fuel pellets and the ratio of the used recovered uranium in volume can be set at 100%.

5. 发明专利

JPH11174179A FUEL ASSEMBLY 失效
公开(公告)号：JPH11174179A
公开(公告)日：1999-07-02
申请号：JP34252797
申请日：1997-12-12
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： SUZUKI TATSUO , TAKENAKA MASAO , IZUTSU SADAYUKI , KUROSAKI HIDEKI
IPC分类号： G21C3/328 , G21C3/326 , G21C3/62
摘要： PROBLEM TO BE SOLVED: To maintain an average uranium concentration and at the same time reduce a degree-of-reaction loss due to recovery uranium, by using the recovery uranium for a fuel pellet with the second largest uranium concentration in a fuel assembly in a fuel rod other than the fuel rod containing gadolinia out of the second-layer fuel rods from the outermost layer. SOLUTION: Two water rods 14 with a thick diameter are arranged at a central region. A short fuel rod P is arranged at four corners and at the center of four sides of the second layer from the outermost periphery. The short fuel rod P fills a fuel pellet into 1/24-15/24 region from the lower edge of the fuel effective length of the other long fuel rods. An average uranium concentration of a fuel assembly is approximately 3.7 wt.% and the long fuel rod has a natural uranium blanket region at upper and lower edges. In a fuel rod 2 and the short fuel rod P other than a fuel rod G containing gadolinia, a recovery uranium pellet is used for a fuel pellet B with the second-largest uranium concentration, the degree-of-reaction loss can be reduced while maintaining the average uranium concentration of the entire fuel assembly.

6. 发明专利

JP2002132563A DUPLICATION SYSTEM OF REDUNDANTLY DISPOSED REPLICATION DATA IN DISTRIBUTED COMPUTER SYSTEM 失效
公开(公告)号：JP2002132563A
公开(公告)日：2002-05-10
申请号：JP2000326087
申请日：2000-10-25
申请人： HITACHI LTD , CHUBU ELECTRIC POWER , TOSHIBA CORP , MITSUBISHI ELECTRIC CORP , FUJI ELECTRIC CO LTD
发明人： NIHEI NOBUYUKI , NAKADA YUJI , HIROTA ATSUHIKO , FURUYAMA RYOICHI , OGASAWARA FUMIHISA , KUZE YASUHITO , SUZUKI HIDEYUKI , KIYOSHIMA YOSHIO , ARIMOTO MASAAKI , SUZUKI TATSUO
IPC分类号： G06F15/177 , G06F12/00
摘要： PROBLEM TO BE SOLVED: To match a replication data disposed in respective computers even if the relationship between an external identifier and internal identifier is not transmitted and received between respective computers. SOLUTION: Master data 104 where consecutive numbers and data value specific to the external identifiers are added to the external identifiers being common between computers are transmitted to a replica disposition computer 103 from a master disposition computer 101 as a transmitted data 107. When the computer 103 has received the data 107 for the first time, the external identifiers included in the data 107 are converted into the internal identifiers by using an identifier conversion processing mechanism 111. This internal identifiers are mapped to the values of consecutive numbers and stored in a lookup table 110 listed in the consecutive numbers. When having received the data 107 including the same consecutive numbers again, the internal identifiers corresponding to the consecutive numbers are fetched out from the lookup table 110. The data values corresponding to this internal identifiers in a data storing area are updated by the data values included in the transmitted data.

7. 发明专利

JPH06333161A COMMODITY MASTER AUTOMATIC REGISTRATION METHOD 失效
公开(公告)号：JPH06333161A
公开(公告)日：1994-12-02
申请号：JP11957493
申请日：1993-05-21
申请人： HITACHI LTD , HITACHI SOFTWARE ENG
发明人： SUZUKI TATSUO , YAITA SHIGEO , NAMITA TATSUMI
IPC分类号： G06F12/00 , G07G1/12 , G07G1/14 , G06F15/21
摘要： PURPOSE:To register unregistered commodities accurately without manual aid of operator of the POS system. CONSTITUTION:When a commodity sold by a commodity sales work by the POS system 20 in a shop is not registered, an intermediate file generated at a POS terminal 8 by tentative registration and an intermediate file generated automatically when a commodity subjected to purchasing and inventory by a purchasing and inventory work is not registered are integrated to generate a transmission file 6 to a host computer 30 and the file 6 is sent to the host computer 30 via a communication line. The host computer 30 collates the sent unregistered commodity information with the commodity master 10 by a JAN code and when the matching JAN code is in existence, commodity information is added thereto to generate the transmission file 16 at separate shop and the result is sent to the POS system 20 via the communication line.

8. 发明专利

JPS6025675B2 失效
公开(公告)号：JPS6025675B2
公开(公告)日：1985-06-19
申请号：JP7213478
申请日：1978-06-16
申请人： HITACHI LTD
发明人： YOSHIHARA SHIGETOMO , SUZUKI TATSUO
IPC分类号： F16K17/38 , F16K31/68

9. 发明专利

JPS5623580A AUTOMATIC PUMP 失效
公开(公告)号：JPS5623580A
公开(公告)日：1981-03-05
申请号：JP9872879
申请日：1979-08-03
申请人： HITACHI LTD
发明人： NISHIMURA SHIYUNICHI , SUZUKI TATSUO
IPC分类号： F04D13/16 , F04B23/02 , F04B43/06 , F04B49/00 , F04B49/02
摘要： PURPOSE:To improve air excess prevention, by making an air supply passage, which is opened into a pressure tank, eccentric as to the axis of a water passage. CONSTITUTION:The air supply passage 20 of an air supply unit 16 is made eccentric by a length L as to the axis of a water passage 10. When enough air is supplied into a pressure tank 12 and the level of water at the time of starting becomes almost equal to that of the upper end opening 40 of the air supply passage 20 and the degree of opening of a faucet is low, a portion of pumped-up water flows into the pressure tank 12 and water gushes out of the water passage 10 and the level of central water rises. In that case, the level of peripheral water does not rise and compressed air in the pressure tank 12 is sucked into the air supply unit 16 through the air supply passage 20 because the passage 20 is eccentric as to the axis 44 of the passage 10. This results in effecting air excess prevention well.

10. 发明专利

JPS5325051A VENTILATION FAN 失效
公开(公告)号：JPS5325051A
公开(公告)日：1978-03-08
申请号：JP9872776
申请日：1976-08-20
申请人： HITACHI LTD
发明人： SUZUKI TATSUO , ISHIGE KANJI
IPC分类号： H05K7/20 , F24F7/007 , F24F11/02 , F25D1/00 , F25D29/00 , G12B15/04 , H01L23/34 , H01L23/467
摘要： PURPOSE:To provide a ventilation fan characterized in that a trouble due to bad rotation of the fan can be checked, by detecting a movement caused by a reaction force during operation of the ventilation fan and then generating a warning.

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