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91. 发明专利

JPH07332621A SWIRL BURNER FOR GAS TURBINE COMBUSTION DEVICE 失效
公开(公告)号：JPH07332621A
公开(公告)日：1995-12-22
申请号：JP13008394
申请日：1994-06-13
申请人： HITACHI LTD
发明人： KARASHI SHIGEKI , OTSUKA MASAYA , HAYASHI AKINORI
IPC分类号： F23R3/14 , F23D14/24
摘要： PURPOSE:To provide a turning burner for a gas turbine combustion device in which its configuration is simple, a flame blowing-off state or the like can be prevented and a flame stability can be improved. CONSTITUTION:A circular swirl burner 1 for a gas turbine combustion device is constructed such that a dispersion fuel nozzle 3 having a plurality of holes at its central part is installed, and a plurality of swirling vanes 2 are installed in a circumferential direction toward an outer circumference of the swirl burner 1 from the dispersion fuel nozzle 3. In addition, the swirling vanes 2 are twisted from the central part toward an outer circumferential part and its swirling angle is varied. Due to this fact, the vanes 2 are constructed such that the central swirling angle 4 high at the central part is provided and an outer circumferential swirling angle 5 weak at the outer periphery is provided.

92. 发明专利

JPH02236498A DECAY HEAT REMOVER 失效
公开(公告)号：JPH02236498A
公开(公告)日：1990-09-19
申请号：JP5609889
申请日：1989-03-10
申请人： HITACHI LTD
发明人： IWASHIGE KENGO , OTSUKA MASAYA , YOKOYAMA IWAO , YAMAKAWA MASATAKE
IPC分类号： G21C15/18
摘要： PURPOSE:To decrease the thermal impact applied on the piping of a device and the structure in a nuclear reactor at the start of the device by providing a regeneration section in an intermediate part of a piping connecting an air cooler and the coiled heat-transfer pipe of a heat exchanger. CONSTITUTION:The regeneration section 22 constituted of a member having a good thermal conductivity is provided in the intermediate part of the piping 12 connecting the air cooler and the coiled heat-transfer pipe 15 of the heat exchanger 2. The regeneration section 22 is previously heated near to the temp. of a high-temp. plenum 7 by the heat transfer and transmission from the high- temp. plenum at the time of an ordinary operation before the reactor shutdown in this case. A cooling medium cooled in the air cooler begins to circulate when the reactor shuts down and the heat remover stars operating. The cooling medium arriving at the regeneration section 22 heads up by depriving the regeneration section 22 of heat and arrives at the coiled heat-transfer pipe 15 for cooling. The quantity of the heat possessed in the regeneration section 22 decreases gradually and the heat remover starts operating with a full power. The thermal impact applied on the cooling coil or the structure in the reactor vessel at the time of the start of the device is decreased in such a manner.

93. 发明专利

JPH0273460A MATRIX ANALYZING DEVICE 失效
公开(公告)号：JPH0273460A
公开(公告)日：1990-03-13
申请号：JP22466488
申请日：1988-09-09
申请人： HITACHI LTD
发明人： MURASHIMA MASAKO , OTSUKA MASAYA
IPC分类号： G06F17/16 , G06F17/12
摘要： PURPOSE:To reduce the memory capacity by applying a calculation method having a small number of non-zero (fill-in) elements in consideration of the arrangement of the zero elements in order to decrease the number of elements to be calculated. CONSTITUTION:In the case an LU analysis is carried out with a zero element 5 supposed to be included in the i-th row/j-th column, the element 5 is equivalent to the product sum of the i-th row of L and the j-th column of U. Then the elements 6 and 7 are compared with each other in order of smaller numbers. If either one of both elements 6 and 7 includes 0, the 'fill-in' is never produced. In other words, the elements of the parts equivalent to the elements 8 and 9 of an original matrix are compared with each other in order of smaller numbers. Then no 'fill-in' is produced as long as either one of both elements 8 and 9 is equal to a zero element and furthermore this zero element is not equal to a 'fill-in' element. Thus it is possible to check the occurrence of the 'fill-in' even in the case of the UL analysis by performing the comparison in the same way between the parts equivalent to the elements 8 and 9 in the original matrix. This check is carried out with all zero elements and it is possible to decide the LU or the UL analysis method that has the smaller number of 'fill-in' elements.

94. 发明专利

JPS63117295A FAST-REACTOR DECAY HEAT REMOVING DEVICE 失效
公开(公告)号：JPS63117295A
公开(公告)日：1988-05-21
申请号：JP26187386
申请日：1986-11-05
申请人： HITACHI LTD
发明人： OTSUKA MASAYA , SHIBATA YOJI , IKEDA TAKASHI , IWASHIGE KENGO , YONEDA YOSHIYUKI
IPC分类号： G21C15/02 , G21C15/18

95. 发明专利

JPS61296294A FAST BREEDER REACTOR 失效
公开(公告)号：JPS61296294A
公开(公告)日：1986-12-27
申请号：JP13774185
申请日：1985-06-26
申请人： HITACHI LTD
发明人： OTSUKA MASAYA , YAMAKAWA MASATAKE , GOTO TADASHI , IKEUCHI TOSHIAKI , YAMAKI HIDEO
IPC分类号： G21C15/02

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