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1. 发明专利

DE3167124D1 SOLAR HEAT COLLECTOR 未知
公开(公告)号：DE3167124D1
公开(公告)日：1984-12-13
申请号：DE3167124
申请日：1981-12-23
申请人： HITACHI LTD , HITACHI CHEMICAL CO LTD
发明人： YAMAMOTO TAKANOBU , SUMIDA ISAO , TSUKAMOTO MORIAKI , IMANI KAZUTAKE , WATAHIKI NAOHISA
IPC分类号： F24S10/40 , F24S10/70 , F24S10/95 , F24J3/02
摘要： A solar heat collector comprises an evacuated transparent pipe; a solar heat collection plate disposed in the transparent pipe; a heat pipe, disposed in the transparent pipe so as to contact with the solar heat collection plate, and containing an evaporable working liquid therein; a heat medium pipe containing a heat medium to be heated; a heat releasing member extending along the axis of the heat medium pipe and having thin fin portions extending from the axis to the inner surface of the heat medium pipe; and a cylindrical casing surrounding coaxially the heat medium pipe to provide an annular space which communicates with the heat pipe. The evaporable working liquid evaporates, receiving solar heat collected by the heat collection plate. The resultant vapor heats the heat medium through the heat medium pipe and the heat releasing member.

2. 发明专利

DE69007327D1 未知
公开(公告)号：DE69007327D1
公开(公告)日：1994-04-21
申请号：DE69007327
申请日：1990-05-10
申请人： HITACHI LTD
发明人： KATAOKA YOSHIYUKI , SUMIDA ISAO , HIDAKA MASATAKA , NAITO MASANORI
IPC分类号： G21C9/004 , G21C9/012 , G21C13/00 , G21C15/18
摘要： A primary containment vessel (7), comprising a reactor pressure vessel (2) in which a core (1) is accommodated, a dry-well volume (4) covering the upper portion of the reactor pressure vessel, a suppression chamber (31) provided with a suppression pool (6) surrounding an intermediate portion of the reactor pressure vessel, has a plurality of vent tubes (5) establishing a connection between the dry-well volume and the suppression pool and an annular baffle plate (10) disposed in the suppression pool (6) along the side wall of the suppression chamber (31), having its top end position at a height between a free surface of the suppression pool and an outlet (20) of the vent tube (5) opened in the suppression pool and its lower end positioned at a height between the outlet and the bottom of the suppression pool. If a loss of coolant accident occurs, hot steam discharged into the dry-well volume (4) is discharged into the suppression pool through the vent tube so as to heat water on the inside of the baffle plate (10). Since the water head difference generated by the water temperature difference between the inside and the outside portions of the baffle plate causes a vertical convection passing through the baffle plate to be created. Therefore, the heat accumulating characteristics of pool water and the heat radiation performance of the containment vessel are improved, causing the size of the containment vessel (7) to be reduced.

3. 发明专利

AU7902681A SOLAR HEAT COLLECTOR 未知
公开(公告)号：AU7902681A
公开(公告)日：1982-07-08
申请号：AU7902681
申请日：1981-12-24
申请人： HITACHI LTD , HITACHI CHEMICAL CO LTD
发明人： TAMAMOTO TAKANOBU , SUMIDA ISAO , TSUKAMOT MORIAKI , IMANI KAZUTAKE , WATAHIKI NAOHISA
IPC分类号： F24S10/40 , F24S10/70 , F24S10/95 , F24J3/02
摘要： A solar heat collector comprises an evacuated transparent pipe; a solar heat collection plate disposed in the transparent pipe; a heat pipe, disposed in the transparent pipe so as to contact with the solar heat collection plate, and containing an evaporable working liquid therein; a heat medium pipe containing a heat medium to be heated; a heat releasing member extending along the axis of the heat medium pipe and having thin fin portions extending from the axis to the inner surface of the heat medium pipe; and a cylindrical casing surrounding coaxially the heat medium pipe to provide an annular space which communicates with the heat pipe. The evaporable working liquid evaporates, receiving solar heat collected by the heat collection plate. The resultant vapor heats the heat medium through the heat medium pipe and the heat releasing member.

4. 发明专利

DE69110810T2 未知
公开(公告)号：DE69110810T2
公开(公告)日：1995-12-07
申请号：DE69110810
申请日：1991-09-16
申请人： HITACHI LTD
发明人： FUJII TADASHI , KATAOKA YOSHIYUKI , FUKUI TOHRU , HIDAKA MASATAKA , NAKAO TOSHITSUGU , HATAMIYA SHIGEO , SUZUKI HIROAKI , NAITOH MASANORI , SUMIDA ISAO , TOMINAGA KENJI , NIINO TSUYOSHI
IPC分类号： G21C9/004 , G21C9/00 , G21C9/008 , G21C13/00 , G21C15/18 , G21D1/00
摘要： There is disclosed a nuclear reactor installation. An accumulator-type emergency core cooling system, a gravity-driven core cooling system and an equalizing system for submerging a reactor core are provided within a primary containment vessel containing a reactor pressure vessel (2) in which the reactor core (1) is disposed. These cooling systems are automatically operated sequentially in accordance with the pressure in the reactor pressure vessel without the need for any particular powered source. The primary containment vessel (10) is made of steel, and the interior of this containment vessel is divided into a space containing the reactor pressure vessel (2) and a space containing an operation floor (30) in such a manner that the two spaces are isolated from each other. An opening device (31) is provided between the two spaces so as to communicate the two spaces with each other in the event of an accident, the upper portion of the primary containment vessel being air-cooled while the lower portion of this containment vessel being water-cooled.

5. 发明专利

DE3803311A1 未知
公开(公告)号：DE3803311A1
公开(公告)日：1988-08-18
申请号：DE3803311
申请日：1988-02-04
申请人： HITACHI LTD
发明人： AKIYAMA TAKAO , ITO TETSUO , SUMIDA ISAO
IPC分类号： G21C1/08 , G21C1/32 , G21C15/25 , G21D3/04 , G21D3/14 , G21D5/06 , G21D1/04 , G21D5/08 , G21C15/24
摘要： Jet pumps and a feed water sparger are disposed in a reactor pressure vessel incorporating a core. A first feed water pipe supplies a portion of feed water to the jet pumps as their driving water. A second feed water pipe connected to the first feed water pipe supplies the remaining portion of the feed water to the feed water sparger. A first feed water heater is disposed in the first feed water pipe downstream of a connecting point of the first feed water pipe and the second feed water pipe. An amount of extracted steam introduced into the first feed water heater is controlled on the basis of a difference in the temperature between feed water flowing through the first feed water pipe and the feed water flowing through the second feed water pipe.

6. 发明专利

AU550312B2 SOLAR HEAT COLLECTOR 未知
公开(公告)号：AU550312B2
公开(公告)日：1986-03-20
申请号：AU7902681
申请日：1981-12-24
申请人： HITACHI LTD , HITACHI CHEMICAL CO LTD
发明人： TAMAMOTO TAKANOBU , SUMIDA ISAO , TSUKAMOT MORIAKI , IMANI KAZUTAKE , WATAHIKI NAOHISA
IPC分类号： F24S10/40 , F24S10/70 , F24S10/95 , F24J3/02
摘要： A solar heat collector comprises an evacuated transparent pipe; a solar heat collection plate disposed in the transparent pipe; a heat pipe, disposed in the transparent pipe so as to contact with the solar heat collection plate, and containing an evaporable working liquid therein; a heat medium pipe containing a heat medium to be heated; a heat releasing member extending along the axis of the heat medium pipe and having thin fin portions extending from the axis to the inner surface of the heat medium pipe; and a cylindrical casing surrounding coaxially the heat medium pipe to provide an annular space which communicates with the heat pipe. The evaporable working liquid evaporates, receiving solar heat collected by the heat collection plate. The resultant vapor heats the heat medium through the heat medium pipe and the heat releasing member.

7. 发明专利

DE69110810D1 未知
公开(公告)号：DE69110810D1
公开(公告)日：1995-08-03
申请号：DE69110810
申请日：1991-09-16
申请人： HITACHI LTD
发明人： FUJII TADASHI , KATAOKA YOSHIYUKI , FUKUI TOHRU , HIDAKA MASATAKA , NAKAO TOSHITSUGU , HATAMIYA SHIGEO , SUZUKI HIROAKI , NAITOH MASANORI , SUMIDA ISAO , TOMINAGA KENJI , NIINO TSUYOSHI
IPC分类号： G21C9/004 , G21C9/00 , G21C9/008 , G21C13/00 , G21C15/18 , G21D1/00
摘要： There is disclosed a nuclear reactor installation. An accumulator-type emergency core cooling system, a gravity-driven core cooling system and an equalizing system for submerging a reactor core are provided within a primary containment vessel containing a reactor pressure vessel (2) in which the reactor core (1) is disposed. These cooling systems are automatically operated sequentially in accordance with the pressure in the reactor pressure vessel without the need for any particular powered source. The primary containment vessel (10) is made of steel, and the interior of this containment vessel is divided into a space containing the reactor pressure vessel (2) and a space containing an operation floor (30) in such a manner that the two spaces are isolated from each other. An opening device (31) is provided between the two spaces so as to communicate the two spaces with each other in the event of an accident, the upper portion of the primary containment vessel being air-cooled while the lower portion of this containment vessel being water-cooled.

8. 发明专利

DE69007327T2 未知
公开(公告)号：DE69007327T2
公开(公告)日：1994-06-30
申请号：DE69007327
申请日：1990-05-10
申请人： HITACHI LTD
发明人： KATAOKA YOSHIYUKI , SUMIDA ISAO , HIDAKA MASATAKA , NAITO MASANORI
IPC分类号： G21C9/004 , G21C9/012 , G21C13/00 , G21C15/18
摘要： A primary containment vessel (7), comprising a reactor pressure vessel (2) in which a core (1) is accommodated, a dry-well volume (4) covering the upper portion of the reactor pressure vessel, a suppression chamber (31) provided with a suppression pool (6) surrounding an intermediate portion of the reactor pressure vessel, has a plurality of vent tubes (5) establishing a connection between the dry-well volume and the suppression pool and an annular baffle plate (10) disposed in the suppression pool (6) along the side wall of the suppression chamber (31), having its top end position at a height between a free surface of the suppression pool and an outlet (20) of the vent tube (5) opened in the suppression pool and its lower end positioned at a height between the outlet and the bottom of the suppression pool. If a loss of coolant accident occurs, hot steam discharged into the dry-well volume (4) is discharged into the suppression pool through the vent tube so as to heat water on the inside of the baffle plate (10). Since the water head difference generated by the water temperature difference between the inside and the outside portions of the baffle plate causes a vertical convection passing through the baffle plate to be created. Therefore, the heat accumulating characteristics of pool water and the heat radiation performance of the containment vessel are improved, causing the size of the containment vessel (7) to be reduced.

9. 发明专利

ID816B 未知
公开(公告)号：ID816B
公开(公告)日：1996-07-18
申请号：ID883111
申请日：1988-03-10
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KATAOKA YOSHIYUKI , MURASE MICHIO , SUMIDA ISAO , INOVE KOTARO , MIURA SATOSHI , YAMANARI SHOZO , MATSUMOTO MASAKI , HASHIMOTO KOJI , SUZUKI HIROAKI
IPC分类号： G21C7/32 , G21C15/18 , G21C17/032 , G01K13/02 , B21C7/00
摘要： A natural circulation reactor includes a reactor pressure vessel, a cylindrical shroud disposed within the reactor pressure vessel to surround a reactor core and to extend to a position above the reactor core, and a coolant descending passage defined between the reactor pressure vessel and the shroud for allowing the coolant discharged from the top of the reactor core to be again supplied to the bottom of the reactor core. In such a natural circulation reactor, a liquid level of coolant in the coolant descending passage is adjusted on the basis of a reactor power request signal at a position below a liquid level of coolant in the shroud, and thus reactor power is controlled so that it may reach a predetermined reactor power by adjusting the liquid level of coolant in the coolant descending passage.

10. 发明专利

DE3662572D1 REACTOR FUEL ASSEMBLY AND NUCLEAR REACTOR 未知
公开(公告)号：DE3662572D1
公开(公告)日：1989-04-27
申请号：DE3662572
申请日：1986-06-11
申请人： HITACHI LTD
发明人： IKEMURA KAZUYUKI , YOKOMIZO OSAMU , YOSHIMOTO YUICHIRO , HAYASHI TATSUO , KASHIWAI SHINICHI , MASUHARA YASUHIRO , SAKURAI MIKIO , TOMIYAMA AKIO , FUJII TADASHI , SUMIDA ISAO
IPC分类号： G21C1/08 , G21C3/322 , G21C5/06 , G21C15/02 , G21C3/32 , F15D1/00

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