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

JPH01250893A NATURAL CIRCULATION BOILING LIGHT WATER REACTOR 失效
公开(公告)号：JPH01250893A
公开(公告)日：1989-10-05
申请号：JP7909388
申请日：1988-03-31
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： SHINNO TAKESHI , NAKAYAMA TADAKAZU , TSURUOKA RYOZO , MIKI MINORU , IWATA NOBUISA , KOYAMA KAZUTO
IPC分类号： G21C1/08 , G21C15/02 , G21C15/12 , G21C15/16 , G21C15/26
摘要： PURPOSE:To contrive the reduction in weight, etc., of a shielding structural body for a turbine system, etc., by providing a chimney which is connected at one end to a shroud, extends in a steam/water chamber toward a steam chamber and is opened at the other end toward a steam dryer. CONSTITUTION:A reactor core 2 is disposed in the steam/water chamber of a pressure vessel 1 and the core shroud 3 encloses the core 2. The tubular chimney 4 extends in the steam/water chamber from the top end of the shroud 3 toward the steam chamber and a coolant is filled in this chimney 4. The inside diameter of the chimney 4 is larger than the outside diameter of the shroud 3 and the end part 41 of the chimney 4 is opened toward the steam dryer 5. The dryer 5 which communicates the steam/water chamber of the pressure vessel 1 and the steam chamber is provided to the upper part of the chimney 4. The dryer 5 is mounted on a circumferential projection 13 which projects radially inward from the wall of the pressure vessel 1. A steam guide 6 is provided to the outlet of the dryer 5. This guide 6 extends upward in the steam chamber and a steam outlet 7 is provided to the wall of the pressure vessel 1 corresponding to the steam chamber.

2. 发明专利

JPS56150399A EMERGENCY GAS TREATING SYSTEM 失效
公开(公告)号：JPS56150399A
公开(公告)日：1981-11-20
申请号：JP5382580
申请日：1980-04-22
申请人： HITACHI LTD
发明人： IWATA NOBUISA , ARAI TOSHIJI , OCHIAI KANEHIRO
IPC分类号： G21C9/00 , G21C19/30 , G21D3/04 , G21F9/00 , G21F9/02

3. 发明专利

JPS5745490A Connecting passage in pressure suppression chamber 失效
标题翻译：连接呼吸压力抑制室
公开(公告)号：JPS5745490A
公开(公告)日：1982-03-15
申请号：JP12108080
申请日：1980-09-03
申请人： Hitachi Ltd
发明人： IWATA NOBUISA , HAYAGUMO SUNAO
IPC分类号： G21C9/004 , G21C9/00 , G21C13/00
CPC分类号： Y02E30/40

4. 发明专利

JPS6321772B2 失效
公开(公告)号：JPS6321772B2
公开(公告)日：1988-05-09
申请号：JP16266681
申请日：1981-10-14
申请人： HITACHI LTD
发明人： IWATA NOBUISA , OCHIAI KANEHIRO
IPC分类号： E04H5/02 , E04B1/16

5. 发明专利

JPS6273195A HOUSING FOR NUCLEAR REACTOR 失效
公开(公告)号：JPS6273195A
公开(公告)日：1987-04-03
申请号：JP21248485
申请日：1985-09-27
申请人： HITACHI LTD
发明人： SHIOZAWA AKIHIKO , SHINNO TAKESHI , OCHIAI KANEHIRO , IWATA NOBUISA , KUBONIWA TAKAO
IPC分类号： G21C11/02 , G21C13/00

6. 发明专利

JPH01132994A JOINT STRUCTURE OF CONTAINMENT VESSEL MADE OF REINFORCED CONCRETE 失效
公开(公告)号：JPH01132994A
公开(公告)日：1989-05-25
申请号：JP29157487
申请日：1987-11-18
申请人： HITACHI LTD
发明人： IWATA NOBUISA
IPC分类号： G21C13/00 , G21C11/02 , G21C13/028
摘要： PURPOSE:To realize a joint structure superior in constructiveness of a containment vessel cylindrical wall and the wall of a reactor building without complex arrangement of reinforcement by providing a gap between the cylindrical wall of the containment vessel and the wall of the reactor building and attaching seal members therein. CONSTITUTION:A space in the outside of a cylindrical wall 1 of a containment vessel is partitioned in two component chambers 3, 4 by the partition wall 2 of a reactor building. A gap 5 is provided between the cylindrical wall 1 and the partition wall 2 and a seal member 6 for securing the watertightness and gastightness between the component chambers 3, 4 are installed in the gaps 5. The seal member 6 is composed of steel plates 7, 8 with studs buried in the cylindrical wall 1 and the partition wall 2 respectively and an expandable element 9 sandwiched between them and variations of the width of the gap 5 can be followed up by the expandability of the seal element 9. Further, a shielding plate 10 for satisfying radiation shielding function of the partition wall 2 at the position for covering the gap 5 is arranged. The shielding plate 10 is attached to the partition wall 2 through a support member 11 which follows the variations of the width of the gap 5.

7. 发明专利

JPS6217939B2 失效
公开(公告)号：JPS6217939B2
公开(公告)日：1987-04-20
申请号：JP1750582
申请日：1982-02-08
申请人： HITACHI LTD
发明人： IWATA NOBUISA , SHINNO TAKESHI
IPC分类号： H02K5/00 , H02K5/24

8. 发明专利

JPS6062589A METHOD OF REMOVING MARINE LIFE IN COOLING SEA WATER SYSTEM FOR CONDENSER 失效
公开(公告)号：JPS6062589A
公开(公告)日：1985-04-10
申请号：JP16992483
申请日：1983-09-14
申请人： HITACHI LTD
发明人： IWATA NOBUISA , OCHIAI KANEHIRO , SHINNO TAKESHI
IPC分类号： F28B9/04 , C02F1/02 , F28B9/00 , F28G9/00 , F28G13/00
摘要： PURPOSE:To remove marine life without a mechanical removing system by introducing part of the intake sea water into a condensor to raise its temperature, which is then routed through cooling water tube and sea water pipe inside the condensor to kill the marine life, and thereafter is released after lowering the temperature. CONSTITUTION:The sea water passing through a water pump 11 at a rate of Q leaves a sea water intake pump room to enter a turbine room, and its Q/3 enters a condenser 10 with remaining 2/Q being released. The sea water of the Q/3 is divided by valves 5, 8 into right and left hand side condenser cooling tubes in the amount of Q/6 respectively, and thereafter is joined to pass through a valve 9 to become a reverse flow of Q/3 via a sea water pump 12. When the output of a nuclear reactor etc. is reduced to lower the amount of heat to 1/2 of the normal operation at this time, the sea water of Q/6 in the right and left side cooling tubes is subjected to three times greater temperature increase, and so, marine life inside the condenser cooling tube and sea water pipe are killed and removed in a short time. Meanwhile, as the temperature of the released sea water is limited to T+DELTAT, the impact to the environment can be minimized.

9. 发明专利

JPS59116092A Earthquake-proof support structure for reactor container 失效
标题翻译：反应堆容器的地震支持结构
公开(公告)号：JPS59116092A
公开(公告)日：1984-07-04
申请号：JP22585182
申请日：1982-12-24
申请人： Hitachi Ltd
发明人： IWATA NOBUISA , SHINNO TAKESHI
IPC分类号： G21C13/024 , G21C13/00
CPC分类号： Y02E30/40

10. 发明专利

JPS5865837A BUILDING FOR INSTALLING LARGE MACHINERY AND BUILDING METHOD 失效
公开(公告)号：JPS5865837A
公开(公告)日：1983-04-19
申请号：JP16266681
申请日：1981-10-14
申请人： HITACHI LTD
发明人： IWATA NOBUISA , OCHIAI KANEHIRO
IPC分类号： E04H5/02 , E04B1/16

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