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1. 发明专利

DE3774307D1 未知
公开(公告)号：DE3774307D1
公开(公告)日：1991-12-12
申请号：DE3774307
申请日：1987-03-18
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： YAMANARI SHOZO , HORIUCHI TETSUO , TOMINAGA KENJI , GOTO HIROSHI , MIURA SATOSHI
IPC分类号： G21C15/18 , G21C9/00 , G21D3/04
摘要： Two systems of low-pressure core spray apparatuses have coolers (20A, 20B), and are adapted to supply cooling water to a core spray header (21) provided in a core-surrounding cylindrical shroud in a reactor pressure vessel (7). Two systems of high-pressure core flooding apparatuses (14A, 14B) and one system of high-pressure coolant injection apparatus (27) are adapted to supply the cooling water to a region formed between the shroud (8) and reactor pressure vessel (7). The elevations of the openings, which are in the reactor pressure vessel (7), of the high-pressure core flooding apparatus (14A, 14B) and high-pressure coolant injection apparatus (27) are higher than that of the core spray header (21). A pipe (26A, 26B) for returning the cooling water in the reactor pressure vessel to the above-mentioned coolers is connected to either the portion of the interior of the reactor pressure vessel which is below the core or the portion of the interior of the reactor pressure vessel which is between the walls of the shroud and reactor pressure vessel. The above-mentioned pipe (26A, 26B) is provided therein with a valve (33A, 34A, 33B, 34B) which is adapted to be closed when the nuclear reactor stops being operated in an emergency in which the breakage of a pipe occurs, and to be opened when the nuclear reactor is stopped under normal conditions.

2. 发明专利

JPS61120020A Ultrasonic liquid level detecting device 失效
标题翻译：超声波液位检测装置
公开(公告)号：JPS61120020A
公开(公告)日：1986-06-07
申请号：JP24069584
申请日：1984-11-16
申请人： Hitachi Eng Co Ltd , Hitachi Ltd
发明人： GOTO HIROSHI , SAKAIGAWA HIROMASA , KAKINUMA YUKIO
IPC分类号： G01F23/296 , G01F23/28 , G01N29/00
CPC分类号： G01F23/28
摘要： PURPOSE:To detect a liquid level with high precision by calculating an attenuation constant from the height and path of a pulse reflection echo corresponding to the medium in a container and detecting the boundary surface between two media in the container. CONSTITUTION:Ultrasonic wave pulses which are made incident from the external wall of the container 1 by a probe 2 causes multi-path reflection inside and outside the wall of the container and time variation of an echo outputted through the probe 2 and a probe driving circuit 3 is outputted as TB1. Then, a wave memory 11 performs sampling to hold a digital value TB2. Further, digital data is held in a RAM15 through a data I/O 12 and a CPU14. The time when the height of a peak echo appears is detected from those data. Then, peak values A1, A2... and paths T1, T2... of respective reflection echoes are obtained as shown by TB3 and then the attenuation constant is calculated. The obtained attenuation constant is selected in the table of attenuation constants stored in a ROM16 to decide on the name of the corresponding medium, and the medium name, plate thickness, etc., are displayed on a display device.
摘要翻译：目的：通过从容器中的介质对应的脉冲反射回波的高度和路径计算衰减常数，并检测容器中两个介质之间的边界面，从而高精度地检测液位。构成：通过探针2从容器1的外壁入射的超声波脉冲导致容器壁内外的多路反射，并且通过探头2输出的回波的时间变化和探针驱动电路 3作为TB1输出。然后，波存储器11进行采样以保持数字值TB2。此外，数字数据通过数据I / O 12和CPU14保持在RAM15中。从这些数据中检测出峰值回波高度的时间。然后，如TB3所示，获得各反射回波的峰值A1，A2 ...和路径T1，T2 ...，然后计算衰减常数。所获得的衰减常数在存储在ROM16中的衰减常数表中选择以决定相应介质的名称，并且介质名称，板厚等显示在显示装置上。

3. 发明专利

JPS62217193A EMERGENCY CORE COOLING DEVICE 失效
公开(公告)号：JPS62217193A
公开(公告)日：1987-09-24
申请号：JP5916986
申请日：1986-03-19
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： YAMANARI SHOZO , HORIUCHI TETSUO , TOMINAGA KENJI , GOTO HIROSHI , MIURA SATOSHI
IPC分类号： G21C15/18

4. 发明专利

DE68918731D1 未知
公开(公告)号：DE68918731D1
公开(公告)日：1994-11-17
申请号：DE68918731
申请日：1989-03-09
申请人： HITACHI LTD
发明人： GOTO HIROSHI , SHIBATA YOJI
IPC分类号： H04L12/00 , H04M11/08 , H04N7/173

5. 发明专利

DE69227157T2 未知
公开(公告)号：DE69227157T2
公开(公告)日：1999-05-20
申请号：DE69227157
申请日：1992-07-23
申请人： HITACHI LTD
发明人： ISHIDA KIYOSHI , GOTO HIROSHI
IPC分类号： H04M11/06 , H04N7/14 , H04N7/24 , H04N7/60 , H04N21/236 , H04N21/2383 , H04N21/434 , H04N21/438 , H04Q11/04
摘要： A video telephone to be connected to the ISDN is a unitary structure comprising a communication controller(24) for controlling communication of digital data, such as voice signal, image signal and facsimile/camera control signal, a dial or key panel unit(23), a telephone controller(95) for controlling the functions of a handset(26) and the key panel unit(23), a camera(21a) for inputting an image, a dispay(21b) for outputting an image, and an image CODEC(22) for coding an input image signal and decoding a received image signal. The camera(21a) is tiltable and detachable.

6. 发明专利

DE68918731T2 未知
公开(公告)号：DE68918731T2
公开(公告)日：1995-03-23
申请号：DE68918731
申请日：1989-03-09
申请人： HITACHI LTD
发明人： GOTO HIROSHI , SHIBATA YOJI
IPC分类号： H04L12/00 , H04M11/08 , H04N7/173

7. 发明专利

CA2074540C VIDEO TELEPHONE 未知
公开(公告)号：CA2074540C
公开(公告)日：1996-07-09
申请号：CA2074540
申请日：1992-07-23
申请人： HITACHI LTD
发明人： ISHIDA KIYOSHI , GOTO HIROSHI
IPC分类号： H04M11/06 , H04N7/14 , H04N7/24 , H04N7/60 , H04N21/236 , H04N21/2383 , H04N21/434 , H04N21/438 , H04Q11/04 , H04L12/52
摘要： A video telephone to be connected to the ISDN is a unitary structure comprising a communication controller for controlling communication of digital data, such as voice signal, image signal and facsimile/camera control signal, a dial or key panel unit, a telephone controller for controlling the functions of a handset and the key panel unit, a camera for inputting an image, a display for outputting an image, and an image CODEC for coding an input image signal and decoding a received image signal. The camera is tiltable and detachable.

8. 发明专利

DE69227157D1 未知
公开(公告)号：DE69227157D1
公开(公告)日：1998-11-05
申请号：DE69227157
申请日：1992-07-23
申请人： HITACHI LTD
发明人： ISHIDA KIYOSHI , GOTO HIROSHI
IPC分类号： H04M11/06 , H04N7/14 , H04N7/24 , H04N7/60 , H04N21/236 , H04N21/2383 , H04N21/434 , H04N21/438 , H04Q11/04
摘要： A video telephone to be connected to the ISDN is a unitary structure comprising a communication controller(24) for controlling communication of digital data, such as voice signal, image signal and facsimile/camera control signal, a dial or key panel unit(23), a telephone controller(95) for controlling the functions of a handset(26) and the key panel unit(23), a camera(21a) for inputting an image, a dispay(21b) for outputting an image, and an image CODEC(22) for coding an input image signal and decoding a received image signal. The camera(21a) is tiltable and detachable.

9. 发明专利

AU644748B2 VIDEO TELEPHONE 未知
公开(公告)号：AU644748B2
公开(公告)日：1993-12-16
申请号：AU2050292
申请日：1992-07-24
申请人： HITACHI LTD
发明人： ISHIDA KIYOSHI , GOTO HIROSHI
IPC分类号： H04M11/06 , H04N7/14 , H04N7/24 , H04N7/60 , H04N21/236 , H04N21/2383 , H04N21/434 , H04N21/438 , H04Q11/04
摘要： A video telephone to be connected to the ISDN is a unitary structure comprising a communication controller(24) for controlling communication of digital data, such as voice signal, image signal and facsimile/camera control signal, a dial or key panel unit(23), a telephone controller(95) for controlling the functions of a handset(26) and the key panel unit(23), a camera(21a) for inputting an image, a dispay(21b) for outputting an image, and an image CODEC(22) for coding an input image signal and decoding a received image signal. The camera(21a) is tiltable and detachable.

10. 发明专利

CA2074540A1 VIDEO TELEPHONE 未知
公开(公告)号：CA2074540A1
公开(公告)日：1993-01-25
申请号：CA2074540
申请日：1992-07-23
申请人： HITACHI LTD
发明人： ISHIDA KIYOSHI , GOTO HIROSHI
IPC分类号： H04M11/06 , H04N7/14 , H04N7/24 , H04N7/60 , H04N21/236 , H04N21/2383 , H04N21/434 , H04N21/438 , H04Q11/04 , H04L12/52
摘要： A video telephone to be connected to the ISDN is a unitary structure comprising a communication controller(24) for controlling communication of digital data, such as voice signal, image signal and facsimile/camera control signal, a dial or key panel unit(23), a telephone controller(95) for controlling the functions of a handset(26) and the key panel unit(23), a camera(21a) for inputting an image, a dispay(21b) for outputting an image, and an image CODEC(22) for coding an input image signal and decoding a received image signal. The camera(21a) is tiltable and detachable.

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