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1. 发明专利

JPH0375318A APPARATUS FOR GENERATING HIGH TEMPERATURE VAPOR 失效
公开(公告)号：JPH0375318A
公开(公告)日：1991-03-29
申请号：JP21265989
申请日：1989-08-18
申请人： HITACHI LTD
发明人： NISHIHARA YOSHIHIRO , YAMAMOTO HAJIME , IWASHIGE KENGO , MURASHIMA MASAKO , UETAKE NAOTO , YAMAKAWA MASATAKE , YAMAMOTO HISASHI
IPC分类号： B01D1/00 , C22B9/02 , C23C14/24 , C23C14/30
摘要： PURPOSE:To obtain a high temp. vapor generating apparatus having high heat efficiency without suffering heat damage to structural material in the apparatus by constituting the apparatus with refining mechanism for refining material to be vaporized and discharging into space, supplying mechanism for the material to be vaporized and heating mechanism for refined material to be vaporized. CONSTITUTION:The material 1 to be vaporized is charged in a liquid vessel 3 and heated with a heater 2 and one side end of a hollow tube 6 (supplying mechanism) is dipped into the material 1 to be vaporized and the inside in a liquid vessel 3 is pressurized with a pressurized machine 4. The material 1 to be vaporized is passed through the hollow tube 6 and made to liquid-drops 14 form tip part of a nozzle 8 (refining mechanism) and dropped. The dropped liquid-drops 14 are heated with electron beam 12 irradiating from an electron gun 9 (heating mechanism). The heated liquid-drops 14 are vaporized in the space and utilized in the high temp. vapor utilizing device 16. Further, excess heat penetrating the drops 14 with the electron beam 12 and given to a heat shield plate 11, is transferred to the material 1 to be vaporized in the liquid vessel 3 with a heat pipe 3 and used to the heating thereof.

2. 发明专利

JPH0325394A NUCLEAR REACTOR 失效
公开(公告)号：JPH0325394A
公开(公告)日：1991-02-04
申请号：JP15964689
申请日：1989-06-23
申请人： HITACHI LTD
发明人： IWASHIGE KENGO , OTSUKA MASAYA , GOTO TADASHI , YAMAKAWA MASATAKE
IPC分类号： G21C1/02 , G21C15/02 , G21C15/18 , G21D1/00
摘要： PURPOSE:To lessen the temp. stratification generated in a cold plenum at the time of a reactor shutdown by forming the outlet pipeline of a heat exchanger of double pipes, connecting the upper part of the inner pipeline to the outlet of the heat exchanger and opening the lower part to the inner side of the outer pipeline. CONSTITUTION:The double pipes consisting of the inner pipeline 3 and the outer pipeline 4 are mounted to the outlet of the heat exchanger 1. The pipeline 3 is shorter than the pipeline 4. A slit (hole) 7 is provided at the boundary between the pipeline 4 and the partition wall 12 above the pipeline 4. The direct heat exchanger (DHX) operates when a pony motor operation starts upon the shutdown of the reactor. The high-temp. fluid in the upper part of the stratum surface formed in the lower part of the hot plenum flows through the heat exchanger 1 out through the pipeline 3 then through the pipeline 4 to the cold plenum (CP) 6. The fluid flowing out of the pipeline 3 to 4 pushes out the fluid in the pipeline 4 and the low-temp. fluid of the CP around the outer pipe from the slit 7 flows into the pipeline 4 and mixes with the fluid flowing out of the pipeline 3. The mixture flows out to the lower part of the CP 6 and eliminates the stratum boundary.

3. 发明专利

JPH01193696A AIR CONDITIONING OF NUCLEAR REACTOR CONTAINMENT 失效
公开(公告)号：JPH01193696A
公开(公告)日：1989-08-03
申请号：JP1698988
申请日：1988-01-29
申请人： HITACHI LTD
发明人： YONEDA YOSHIYUKI , KARASHI SHIGEKI , YAMAKAWA MASATAKE
IPC分类号： G21C13/00
摘要： PURPOSE:To decrease an area of an air stagnant zone in a containment and to enable a homogenization of a temperature distribution of an inside containment atmosphere, by generating a circulation flow surrounding a shielding block and also generating a secondary circulation flow accompanied by the former circulation flow at pipings. CONSTITUTION:By connecting a gamma ray shielding block area 10 and a control rod drive mechanism area around a nuclear reactor pressure vessel 2 with a duct and by activating a blower 8 placed at the intermediate part of the duct, an ascending air flow is accelerated. On the other hand, upper torus blow-off valves 6a are placed on an upper position of a containment 1, and intermediate torus blow-off valves 6m and lower torus suction ducts 7l are placed at an intermediate position and at a lower position of the containment, respectively. The ducts 7l and 6a are connected by a duct 5 and the blower 8 and a cooler 9 are placed at an intermediate position of the duct 5. A discharge outlet of the blower 8 and the duct 6m are connected and the cooler 9 and the duct 6m are also connected. Therewith, by a cooling air flow from the duct 6a, high temperatures air rising to an upper part of the containment 1 is cooled down and streams downwardly as a circulation flow. Moreover, by the cooling air flow from the duct 6m, a downward air flow along an outer wall surface of the shielding block 3 is urged to flow and forms a secondary circulation flow therewith a temperature distribution can be homogenized.

4. 发明专利

JPS6154495A Fast breeder reactor 失效
公开(公告)号：JPS6154495A
公开(公告)日：1986-03-18
申请号：JP17663084
申请日：1984-08-27
申请人： Hitachi Ltd
发明人： GOTO TADASHI , YAMAMOTO HISASHI , YAMAKAWA MASATAKE , SHIBATA YOJI
IPC分类号： G21C15/02 , G21C1/02 , G21C1/03 , G21C15/247
CPC分类号： G21C15/247 , G21C1/03 , Y02E30/34 , Y02E30/35
摘要： A fast breeder reactor having an intermediate heat exchanger (21) into which a liquid metal in one of both cooling systems of a primary cooling system and a secondary cooling system of the fat breeder reactor is introduced as a primary fluid and a liquid metal in the other cooling system as a secondary fluid, the secondary cooling system being furnished with a pump which causes the liquid metal in this secondary cooling system to flow; characterized in that the intermediate heat exchanger (21) is constructed of a magnetic field generator (23, 24), and a channel which is so formed that its flow direction is set to a direction traversing a magnetic flux produced by the magnetic field generator, the channel being partitioned by an electrically-conductive heat transfer plate (30) to define a primary cooling system channel (31) through which the primary fluid is passed and a secondary cooling system channel (32) through which the secondary fluid is passed. When one of the primary and secondary fluids is caused to flow by the pump (6) within a magnetic flux established by the magnetic field generator (23, 24) and while defining an angle to the magnetic flux, current is induced, and the other fluid flows subject to the current and the magnetic flux of the magnetic field generator, whereby heat is exchanged between both the fluids through the heat transfer plate (30) during the flow of both the fluids. The common structure achieves a heat exchange function and a pumping function which can contribute to the miniaturization of the fast breeder reactor.

5. 发明专利

JPH02279932A CONCENTRATION TYPE AIR CONDITIONER 失效
公开(公告)号：JPH02279932A
公开(公告)日：1990-11-15
申请号：JP9732189
申请日：1989-04-19
申请人： HITACHI LTD
发明人： YONEDA YOSHIYUKI , INAGE SHINICHI , KARASHI SHIGEKI , YAMAKAWA MASATAKE
IPC分类号： F24F3/16
摘要： PURPOSE:To make air speed distribution of the front face of a filter uniform, to set the maximum air flow value of the same face to a predetermined value or less and to improve the operating efficiency of the filter by so disposing the sharpened end of a wedge-shaped square conical wind direction structure as to oppose to the section of a duct of an inlet opening in the opening. CONSTITUTION:An wind direction unit 10 and a wind direction supporting beam 11 are provided in the opening of a diffuser 2. The unit 10 is formed, for example, in a wedge-shaped square conical state, of an iron plate as its material, in a hollow state. The unit 10 is so disposed that the sectional area of a duct between the opening of the diffuser 2 and the unit 10 becomes a predetermined valued or more. The air from the diffuser 2 is collided with the unit 10 to reduce its dynamic pressure to alter the direction of the flow along the unit 10 and to feed toward a ceiling 15 or a floor 16. It is combined in front of a filter 3, its maximum air speed value is limited to a predetermined value or less, and the air speed distribution immediately before the filter 3 is made uniform.

6. 发明专利

JPH01185486A FAST BREEDER REACTOR 失效
公开(公告)号：JPH01185486A
公开(公告)日：1989-07-25
申请号：JP949188
申请日：1988-01-21
申请人： HITACHI LTD
发明人： OTSUKA MASAYA , YOKOYAMA IWAO , YAMAKAWA MASATAKE , SHIBATA YOJI
IPC分类号： G21C1/02 , G21C15/02
摘要： PURPOSE:To plan miniature and reliability by preparing an auxiliary heat exchanger for considering the coolant of a reactor main vessel lower area as a primary side and taking out the generating heat of a main vessel lower part outside, and preventing an increase in reactor core outlet temperature. CONSTITUTION:A roof slab 2 is penetrated and a plurality of pumps 7 and a main heat exchanger 8 are inserted in the circumferential part in a reactor main vessel 1. The secondary side of an auxiliary heat exchanger inserted in the circular space part 17 of the circumference of a high pressure plenum 15 is connected to a sub-heat exchanger 27 through branch points 23, 24 while it is joined to an air cooler 21 through pieces of tubing 19, 20. With valves 28, 29 closed at the time of rating operation opened by reactor stop, an auxiliary pump 22 is operated, the exchangers 18, 27 are worked, primary sodium in the main vessel 1 is cooled, and an increase in reactor core outlet temperature is prevented. Therefore, the reliability of a reactor can be improved.

7. 发明专利

JPS62235434A METHOD AND APPARATUS FOR REMOVING VAPOR 失效
公开(公告)号：JPS62235434A
公开(公告)日：1987-10-15
申请号：JP7776286
申请日：1986-04-04
申请人： HITACHI LTD
发明人： YAMAMOTO HAJIME , SHIMOYASHIKI SHIGEHIRO , YAMAKAWA MASATAKE , YAMAMOTO HISASHI , ABE KOJI
IPC分类号： G21D1/02 , C22B26/10 , G21C19/28 , G21C19/30
摘要： PURPOSE:To remove vapor of Na, etc., with a compact device at a high efficiency by maintaining the vapor in gas in an unsatd. state and flowing the same while bringing the same into contact with the surface of capturing members. CONSTITUTION:The cover gas 2 contg. the vapor of Na, etc., flows into a cylinder 13 from the lower part of a vessel 8 and enters the 1st stage of a mesh block 14 through a hole 18. The gas emits into an upper space 19 after flowing in a radial direction and enters again the inside of the cylinder 13 from the hole 18. There are partition plates 17 in the cylinder 13 and the gas enters the 2nd stage of the mesh block 14 through the hole 18. The gas flows upward by repeating such zigzag routes until the gas emits into the upper space and is released from an outflow port 20. The Na vapor in the gas is condensed and removed during the passage through the mesh blocks 14. The gas is heated in the stage of flowing in the cylinder 13. The efficiency of removing the Na vapor is thereby improved and since the concn. in the outlet of the flow passage is smoothly decreased down to the satd. vapor concn. relative to outlet concn., the radiation exposure does to an operator is decreased.

8. 发明专利

JPS6212371A METHOD AND DEVICE FOR CONTROLLING FLOW RATE OF CONDUCTIVE FLUID 失效
公开(公告)号：JPS6212371A
公开(公告)日：1987-01-21
申请号：JP14656685
申请日：1985-07-05
申请人： HITACHI LTD
发明人： YAMAMOTO HAJIME , GOTO TADASHI , YAMAKAWA MASATAKE , NAKAO NOBORU
IPC分类号： H02K44/08
摘要： PURPOSE:To simplify the structure and to enhance the reliability by automatically controlling a brake force which acts on fluid in response to the fluid temperature. CONSTITUTION:Two conductive electrodes 5 and two permanent magnets 6 are opposed elevationally and laterally to form a rectangular duct, and to feed conductive fluid 7 therein. The direction of a magnetic field 8 of a permanent magnet 6 is crossed perpendicularly to the flowing direction, a current circuit 9 is provided between the electrodes 5, and a resistor 10 is associated. Then, a current 11 is generated in the fluid 7, and a brake force F depending upon a magnetic flux density B and a resistance (r) acts on the fluid 7. In this case, since the flow rate of the fluid 7 varies according to the magnitude of the force F [the magnitudes of the resistance (r) and the density B], the resistor 10 which varies in the resistance (r) by the temperature of the fluid 7 is associated in the circuit 9 or a magnetic material which varies in the magnetization rate is associated in the circuit to control the force F. Thus, when the temperature of the fluid 7 rises, the force F acting on the fluid 7 decreases to increase the flow rate.

9. 发明专利

JPS61207996A FAST REACTOR 失效
公开(公告)号：JPS61207996A
公开(公告)日：1986-09-16
申请号：JP4831385
申请日：1985-03-13
申请人： HITACHI LTD
发明人： GOTO TADASHI , YAMAMOTO HISASHI , YAMAKAWA MASATAKE , HASHIMOTO HIROSHI
IPC分类号： G21C15/02 , G21C1/02 , G21C15/247

10. 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.

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