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51. 发明专利

JPS5659191A HEAT PIPE 失效
公开(公告)号：JPS5659191A
公开(公告)日：1981-05-22
申请号：JP13425379
申请日：1979-10-19
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： IKEDA TAKASHI , KOTANI KOUICHI , YOKOYAMA IWAO
IPC分类号： F28D15/02 , F28D15/00
摘要： PURPOSE:To adjust the flow quantity of a working medium automatically corresponding to the environment of heat pipe use by mixing a hydrated crystalline substance with the working medium which transfers heat being evaporated and condensed in the heat pipe. CONSTITUTION:With a working medium 4 sealed in a heat pipe 1, a hydrated crystalline substance 5 of a quantity larger than its saturating solubility, for example, barium hydroxide 6 hydrate is mixed. By so composing, the crystals of the hydrated crystalline substance 5 dissolve as the temperature of the mixture rises, and the quantity of water in the working medium 4 increases. When the temperature drops, the hydrated crystalline substance crystallizes and the quantity of water decreases. By so doing, the quantity of the working medium is self-controlled to increase or decrease corresponding to the change of the working environment of the heat pipe 1.

52. 发明专利

JPS55152425A PHASE DIFFERENCE MEASURING DEVICE 失效
公开(公告)号：JPS55152425A
公开(公告)日：1980-11-27
申请号：JP6045479
申请日：1979-05-18
申请人： HITACHI LTD
发明人： NAKAO SHIYUNJI , KOTANI KOUICHI
IPC分类号： G01R25/00 , G01H1/00
摘要： PURPOSE:To measure a phse difference on the basis of signals input into a phase difference measuring device from a plurality of points in a short time, by employing a simple processing circuit for measuring a phase difference between two arbitrary points. CONSTITUTION:Detected signals from displacement detectors 1, 2 provided in two points among many points on a structure are amplified by amplifiers 3, 4 to be applied to filters 5, 6. Signals x1, x2 from for filters 5, 6 are applied to an adder 7 and then to a rectifier 8. Output signals from the rectifier 8 are separated into positive and negative signals, which are applied to integrators 9, 10, respectively, to determine the areas represented thereby. The sum total of the areas is calculated by an adder 11. On the basis of this value, variations in phase difference are determined in a phase difference checking means 12. A measured signal in this method contains a large amount of frequency component, and a superior component has a greater amplitude. Accordingly, when an increase and decrease in an absolute value of the sum of two signals are traced, variations in phase difference can be determined or information as to whether an oscillation mode is being changed or not can be obtained. A phase difference measuring device according to this invention has been achieved on the basis of the above technique.

53. 发明专利

JPS5454912A VAPOR TRAP 失效
公开(公告)号：JPS5454912A
公开(公告)日：1979-05-01
申请号：JP12094277
申请日：1977-10-11
申请人： HITACHI LTD
发明人： SUMIDA ISAO , KOTANI KOUICHI
IPC分类号： C22B26/10 , B01D8/00 , C22B5/16 , G21C15/16 , G21C19/30 , G21D1/02
摘要： PURPOSE:In a high-breeder reactor, a mist or vaper of coolant sodium is trapped by a mesh wire and collected into a container. In this process, capillary force and gravity are effectively utilized to maintain a high level of trapping capacity. CONSTITUTION:As a cooling material for a high-speed breeder reactor, a liquid sodium mist or a vaper-containing cover gas is passed through a vaper trap. The sodium mist or vapor is trapped by mesh wire in mesh filled zone 2 and passes through a capillary structure 5 into a sodium reservoir 4. The mesh wire and capillary structure respectively consist of fine and coarse meshes so that the sodium in the reservoir does not rise up through the capillary by sodium surface tension. This structure fruther promotes the abosrtion of sodium trapped in the filled zone 2 to drain up sodium from the surface of the mesh wire in the zone, thereby maintaining a high level sodium trapping capacity.

54. 发明专利

JPS5443068A TIME CHANGE RATE DETECTION CONTROL APPARATUS OF TEMPERATURE 失效
公开(公告)号：JPS5443068A
公开(公告)日：1979-04-05
申请号：JP10880677
申请日：1977-09-12
申请人： HITACHI LTD , HITACHI ELECTR ENG
发明人： GOMI HIROAKI , HONDA MASASHI , KOTANI KOUICHI
IPC分类号： G01R19/12 , G01K3/08 , G01K7/00 , G01R19/32
摘要： PURPOSE:To take measures against the occurrence of abnormal states by subsequently selecting plural sensors disposed in an atomic reactor simulator vessel, converting their signals to digital signal values, performing specified operations and obtaining the time change rates of the surface temperatures of heater pins at a high speed.

55. 发明专利

JPS5317895A FLOW OUT PREVENTIVE DEVICE OF COOLING WATER TO OUTSIDE OF REACTOR 失效
公开(公告)号：JPS5317895A
公开(公告)日：1978-02-18
申请号：JP9135676
申请日：1976-08-02
申请人： HITACHI LTD
发明人： CHINEN MASANORI , KOTANI KOUICHI , MURASE MICHIO
IPC分类号： G21C9/00 , G21C13/10 , G21C15/00
摘要： PURPOSE:To prevent environmental contamination by radioactivity as a safety system at the time of loss of cooling water accident in a primary system, by means of mountmounting nozzle ports in a reversed direction against flow out direction of cooling water at the water feeding tube or at the outlet.

56. 发明专利

JPS538494A CORE SUPPORTING PANEL 失效
公开(公告)号：JPS538494A
公开(公告)日：1978-01-25
申请号：JP8198776
申请日：1976-07-12
申请人： HITACHI LTD
发明人： KOTANI KOUICHI , MURASE MICHIO , SUMIDA ISAO
IPC分类号： G21C15/02 , G21C1/08 , G21C5/10 , G21C13/00 , G21C15/00 , G21C17/00 , G21C17/10
摘要： PURPOSE:To lower or stop the vibration of a nuclear fission counter inserting tube LPRM, by means of unifying the flow velocity of cooling water around the LPRM and of reducing further vibration thereof.

57. 发明专利

JPS536794A FUEL ELEMENT 失效
公开(公告)号：JPS536794A
公开(公告)日：1978-01-21
申请号：JP7995676
申请日：1976-07-07
申请人： HITACHI LTD
发明人： KOTANI KOUICHI , KIMURA TOSHIO , MURASE MICHIO , SUMIDA ISAO
IPC分类号： G21C3/324 , G21C3/08 , G21C3/32
摘要： PURPOSE:To reduce the vibration of a fission counter inserting tube, by means of mounting fins whichchange the flow direction of the cooling water in by-pass on the outer surface of a fuel element.

58. 发明专利

JPS52150715A COLD TRAP 失效
公开(公告)号：JPS52150715A
公开(公告)日：1977-12-14
申请号：JP6769976
申请日：1976-06-11
申请人： HITACHI LTD
发明人： MURASE MICHIO , SUMIDA ISAO , KOTANI KOUICHI
IPC分类号： C22B26/10 , C22B9/02 , G21C15/00 , G21C19/313 , G21D1/00 , G21F9/06
摘要： PURPOSE:To increase the capturing capturing capacity and efficiency of the impurities simultaneously by increasing the inflow area and passage distance with deviding the filled material layer of cold trap into two layers which remove the impurities contained in liquid material used as a coolant for high speed breeder reactor.

59. 发明专利

JPS5298591A SELFFCONTROLLING TYPE AUTOMATIC PLUGGING METER 失效
公开(公告)号：JPS5298591A
公开(公告)日：1977-08-18
申请号：JP1487976
申请日：1976-02-16
申请人： HITACHI LTD
发明人： MURASE MICHIO , SUMIDA ISAO , KOTANI KOUICHI , YAMAMOTO HAJIME
IPC分类号： G01N25/14 , G21C17/02
摘要： PURPOSE:Orifice temperature is maintained at the saturation temperature of impurities in a self-controlling manner by combining double pipes and bypass and the reliability of operation is enhanced by eliminating the need for control systems.

60. 发明专利

JPS5257009A COLD TRAP 失效
公开(公告)号：JPS5257009A
公开(公告)日：1977-05-11
申请号：JP13306175
申请日：1975-11-07
申请人： HITACHI LTD
发明人： MURASE MICHIO , SUMIDA ISAO , KOTANI KOUICHI , YAMAMOTO HAJIME
IPC分类号： C22B26/10 , C22B9/02 , G21C15/00 , G21C19/313 , G21D1/00 , G21F9/06
摘要： PURPOSE:To make collection of impurities by mesh uniform by means of changing the wire diameter of the mesh of cold trap used in a liquid metal loop etc. in the direction of liquid metal flow.

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