专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

22. 发明专利

JPS56112686A METHOD AND DEVICE FOR COOLING NUCLEAR REACTOR PRESSURE VESSEL 失效
公开(公告)号：JPS56112686A
公开(公告)日：1981-09-05
申请号：JP1483380
申请日：1980-02-12
申请人： HITACHI LTD
发明人： KAWASHIMA HIROAKI , NAGOSHI TOSHIHIKO , SAITOU HIDEYO
IPC分类号： G21C15/12 , H05K7/20

23. 发明专利

JPS54123720A CONSTRUCTION OF NOZZLE SECTION 失效
公开(公告)号：JPS54123720A
公开(公告)日：1979-09-26
申请号：JP2992878
申请日：1978-03-17
申请人： HITACHI LTD
发明人： SAITOU HIDEYO , NAKAGAWA YUKIO , KUROBA MICHIE
IPC分类号： B05B1/02 , F17C1/00 , F17C13/00 , G21C13/032 , G21C19/28
摘要： PURPOSE:To maintain the uniform distribution of temperature on the inner surface of nozzle to prevent the corner and inner surface of nozzle from thermal fatigue cracking by providing simply a spiral member between the outer surface of easily interchangeable, bayonet type thermal sleeve and the inner surface of nozzle. CONSTITUTION:A spiral expansion member 9 is provided between the inner surface of nozzle 2 and the outer surface of bayonet type thermal sleeve 32. Cooling water 5 which is flowed into a bayonet portion of the thermal sleeve 32 enlarged by the contraction due to the injection of the cooling water 5 is guided by the spiral member 9, heated sequentially and sent into a container 1. At that time, even if a small amount of cooling water(leakage water) is flowed from the bayonet portion, the section of fluid in the spiral member 9 is relatively small so that the flow speed becomes higher and a layer of cooling water formed on the outer surface of the thermal sleeve 32 is involed in the whole flow to provide the uniform distribution of temperature on the inner surface of nozzle 4 and prevent that portion from thermal fatigue cracking.

24. 发明专利

JPS52118198A HEAT INSULATOR OF SLIDE OPENING 失效
公开(公告)号：JPS52118198A
公开(公告)日：1977-10-04
申请号：JP3443076
申请日：1976-03-31
申请人： HITACHI LTD
发明人： SAITOU HIDEYO , KOTAKI TOSHIROU
IPC分类号： G21C11/08
摘要： PURPOSE:To allow parts to be inspected to exposure with ease by means of opening adjacent terminals of mutually adjacent panells, and of enabling to insert the one into another, in a mirror type heat insulator binded by panels made of a laminate of metallic thin plates.

25. 发明专利

JPS51121694A PROTECTIVE RIB FOR THERMAL SLEEVE 失效
公开(公告)号：JPS51121694A
公开(公告)日：1976-10-25
申请号：JP4639575
申请日：1975-04-18
申请人： HITACHI LTD
发明人： NARUSE AKISUKE , FUJIMOTO KOUJI , NAKAGAWA YUKIO , AIZU MASAKADO , SAITOU HIDEYO
IPC分类号： G21C13/032 , G21C13/00 , G21C15/00
摘要： PURPOSE:Considerably relieving generation of thermal stress of a nozzle body by mounting a ring with a slot on the shoulder in the upward flow side of fluid at the attaching portion of a thermal sleeve.

你已经成功收藏专利！

检索式保存成功!

IPRDB