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    • 2. 发明专利
    • VAPOR GENERATOR
    • JPH0854101A
    • 1996-02-27
    • JP18929694
    • 1994-08-11
    • TOSHIBA CORP
    • KOBAYASHI MASAHIKOOOTO AKIHIROMORI KENJISHIMANO KUNIO
    • G21D1/00F22B1/06
    • PURPOSE:To form a compact structure by alleviating pressure propagation when sodium-water reaction occurs, and suppressing the transfer of reaction products to an atomic reactor vessel. CONSTITUTION:An inner cylinder 20 is provided in a body drum 19, a cylinder 26 is provided in the cylinder 20, and an electromagnetic pump 27 is provided under the cylinder 26. An inner tube 28 is inserted into the pump 27, and the lower side of the tube 28 and the bottom of the drum 19 are sealed by a sealing structure 29. Helical coiled double heat transfer tubes 21 are laminated between the drum 19 and the cylinder 20. Both the ends of the tube 21 are connected to a main vapor tube base 22 and a water supply tube base 23. The outside of the drum 19 is surrounded by a liquid metal containing vessel 33 via a partition structure 34, the outside of the vessel 33 is surrounded by a guard vessel 40, and a bellows sealing structure 35 for connecting the drum 19 is provided at the upper part of the structure 34.
    • 3. 发明专利
    • NUCLEAR REACTOR PLANT SECONDARY COOLING DEVICE
    • JPH0666993A
    • 1994-03-11
    • JP21997692
    • 1992-08-19
    • TOSHIBA CORP
    • MORI KENJI
    • G21D1/02
    • PURPOSE:To improve economy and reliability by reducing the number of components, pipes and valves of a secondary cooling device. CONSTITUTION:The cooling device consists of a steam generator 1, a circulation pump 2a, pipes, a dump tank 4 and a purification unit 5 and the outlet pipe 3a of the steam generator 1 is submerged in a liquid metal 20 in the dump tank 4. Around the outlet pipe 3a, expansion joint 8 connecting a steam generator outlet nozzle 9 and a dump tank nozzle 10 is placed. The circulation pump 2a is placed in the dump tank 4 and its suction pipe is located in the liquid metal 20 in the dump tank 4. The purification unit 5 is located in the dump tank 4. The inlet pipe of the steam generator 1 is connected to an inlet nozzle 12 at the lower part, to an inlet riser pipe 13 and a distribution device 14 in the steam generator 1. On the steam generator 1, inlet water supply nozzle 15 and outlet steam nozzle 16 are provided and these nozzles 15 and 16 are connected with heat conduction pipes 11.
    • 4. 发明专利
    • STEAM GENERATOR
    • JPH0518502A
    • 1993-01-26
    • JP16792991
    • 1991-07-09
    • TOSHIBA CORP
    • MORI KENJI
    • F22B1/06F28F11/00G21D1/00
    • PURPOSE:To facilitate the identification of a double heat exchanger tube causing a leak when the leak occurs at an inner tube composing the double heat exchanger tube. CONSTITUTION:A number of heat exchanger tubes 33 are arranged in a body shell through which a liquid metal passes and water to be fed to the heat exchanger tubes 33 is heated by heat exchange with the liquid metal to generate steam. In a steam generator thus arranged, the heat exchanger tube 33 is built in a double tube structure comprising outer and inner tubes and a gas plenums 38 and 59 are formed so as to communicate with a gap 58 between the inner and outer tubes as sealed with an inert gas. Then, a main steam tube plate 34 and a main feed water tube plate 35 are provided on each of the double heat exchanger tubes 33 to join respective ends on the steam and feed water sides thereof. Leak detectors 40 and 44 which can detect a possible leak are connected to the respective gas plenums 38 and 59 and the main steam tube plate 34 and the main feed water tube plate 35 are fixed.
    • 5. 发明专利
    • STEAM GENERATOR
    • JPH01244201A
    • 1989-09-28
    • JP6708888
    • 1988-03-23
    • TOSHIBA CORP
    • MORI KENJI
    • F22B1/06
    • PURPOSE:To enable a leakage of fluid from an inner pipe and an outer pipe constituting a double heat-transfer pipe to be detected without delay by a method wherein spaces between an upper sodium pipe plate and a main steam pipe and between a lower sodium pipe plate and a water supplying pipe plate are made as small as possible. CONSTITUTION:Systems in which a desired length of inner pipe 22 of a double heat-transfer pipe 2 are prepared. These systems are inserted in sequence into openings for use in inserting thermal transmitting pipes of an upper sodium pipe plate 3 and then an outer pipe 21 and the upper sodium pipe plate 3 are welded at a welding part 31. In this case, the inner pipe 22 is inserted by half into a main steam pipe plate 5. Then, the main steam pipe plate 5 is moved along the inner pipe 22, a distance between the inner pipe and the upper sodium pipe plate 3 is set as small as possible and a surplus length of the inner pipe 22 is cut. Lastly, the inner pipe 22 and the main steam pipe plate 5 are welded at a welding part 32 and fixed there. With the foregoing arrangement, a volume of an upper barrel 7 is decreased by an amount corresponding to a reduced distance between the upper steam pipe plate 5 and the upper sodium pipe plate 3.
    • 8. 发明专利
    • INTERMEDIATE HEAT EXCHANGER
    • JPS61237992A
    • 1986-10-23
    • JP7843685
    • 1985-04-15
    • TOSHIBA CORP
    • MORI KENJI
    • F28F21/08F28D7/16F28F9/00G21D5/08G21D5/14
    • PURPOSE:To compact the heat exchanger and obtain the intermediate heat exchanger, excellent in the reliability of structure, by a method wherein a material, having a thermal expansion coefficient larger than the same of the material of heat transfer tube, is employed for the material of a lower cylinder of the intermediate heat exchanger for a nuclear reactor. CONSTITUTION:The intermediate heat exchanger 33 consists of a hollow tubular upper cylinder 38 and a lower cylinder 39, hung vertically from a roof slub 2. An upper tube plate 41 is provided at the connecting section between the upper cylinder 38 and the lower cylinder 39, while a lower tube plate 42 is provided horizontally at the lower end of the lower cylinder 39. 39Cr series ferrite steel or the like, excellent in high-temperature strength and having comparatively small thermal expansion coefficient, is employed for the materials of the upper tube plate 41, the lower tube plate 42 and the heat transfer tube 43 while stainless steel, excellent in high-temperature strength and having comparatively larger thermal expansion coefficient, is employed for the material of one part of the lower cylinder 39 and both of them are connected through a different material coupling 23. According to this constitution, a tension load, applied on the heat transfer tube 43, effects in a direction of mitigating the load when the temperature of the tube 43 is increased suddenly and the tube 43 expands further in the case of hot-shock accident and whereby Euler buckle of the heat transfer tube 43, which is caused in case the tube 43 and the lower cylinder 39 are made of the same material, may be avoided.
    • 10. 发明专利
    • Cover gas device
    • 封闭气体装置
    • JPS54150588A
    • 1979-11-26
    • JP5821278
    • 1978-05-18
    • Toshiba Corp
    • MORI KENJI
    • B01D46/00G21C19/30G21D1/02
    • Y02E30/40
    • PURPOSE: To enlarge the exhausting conductance of a device, by means of setting up a by-passing tube with a stopping valve at the steam trap of a cover gas system, of closing the valve at normal operation, and of full opening the valve at the evacuating time.
      CONSTITUTION: A steam trap 7 is set up at the cover gas system of a vessel 6 holding a liquid metal, and a by-pass tube 8 with a stopping valve 9 is set up at this trap 7. This device is connected to a breathing header 10 and a vacuum pump 11. During in normal operation, the stopping valve 9 is closed, and the cover gas is flowed via the steam trap 7, and an innert gas in which the vapour of a liquid metal was removed, is flowed through the breathing header 10. At the evacuating time of innert gas displacement of the vessel 6, the evacuation effected by the vacyum pump 11 by means of full opening the stopping valve 9. Because of the exhaust conductance of the by-pass system being larger than exhaust conductance of the steam trap 7, the exhaust conductance of the cover gas device at the evacuating time, can be satisfactorily enlarged.
      COPYRIGHT: (C)1979,JPO&Japio
    • 目的:为了扩大设备的排气电导,通过在盖气系统的疏水阀处设置带有止动阀的旁通管,在正常运行时关闭阀门,并将阀门全开 疏散时间。 构成:在容纳液体金属的容器6的覆盖气体系统处设置有蒸汽疏水阀7,并且在该捕集器7处设置具有止动阀9的旁通管8.该装置连接到呼吸 集管10和真空泵11.在正常操作期间,停止阀9关闭,并且盖气体经由蒸汽疏水阀7流动,并且除去液态金属蒸汽的内部气体流过 呼吸头10.在容器6的内部气体排出的抽空时间,通过完全打开止动阀9由振动泵11进行抽真空。由于旁通系统的排气传导大于 蒸汽疏水阀7的排气传导,排气时间的覆盖气体装置的排气电导能够令人满意地扩大。