专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH02306077A VERY LOW TEMPERATURE COOLING DEVICE 失效
公开(公告)号：JPH02306077A
公开(公告)日：1990-12-19
申请号：JP12662389
申请日：1989-05-22
申请人： JAPAN ATOMIC ENERGY RES INST , HITACHI LTD
发明人： SHIBANUMA KIYOSHI , MATSUMOTO KOZO , KAJIWARA HIROTAKE , TAKEI NOBUYUKI , TAKADA TADASHI
IPC分类号： F25D3/10
摘要： PURPOSE:To make unnecessary the winding of a heat insulating and cold insulation material for an inner cylinder of a heating device to shorten a site construction period so as to control the increase in a cost by making a vacuum heat insulation structure of the heating device for heating a very low temperature refrigerant, by which a body to be cooled is cooled, up to a room temperature. CONSTITUTION:The outlet of a very low temperature refrigerant of a heating device 40' is connected, for instance, to an end of room temperature piping 50 whose other end is open. In addition, very low temperature refrigerant transfer piping 20a, 20b is made in a structure capable of vacuum heat and cold insulation. The heating device 40' consists of, for instance, a heater 43 provided therein, an inner cylinder 41 having the inlet of the very low temperature refrigerant in a lower part thereof and the outlet in an upper part thereof and an outer cylinder 44 arranged with a vacuum heat insulation layer on an outside thereof. The inlet of the very low temperature refrigerant of the inner cylinder 41 is connected to an inner pipe 21 for allowing the very low temperature refrigerant of the very low temperature refrigerant transfer piping 20b to flow, the vacuum heat insulation layer is formed on the outside of the inner pipe 21, the vacuum heat insulation layer of the outer pipe 22 is communicated to that of the heating device 40' to connect to the outer cylinder 44.

2. 发明专利

JPH01244254A METHOD OF CONTROLLING AUXILIARY COLD SOURCE FOR CRYOGENIC REFRIGERATING PLANT 失效
公开(公告)号：JPH01244254A
公开(公告)日：1989-09-28
申请号：JP6957388
申请日：1988-03-25
申请人： JAPAN ATOMIC ENERGY RES INST , HITACHI LTD
发明人： SHIBANUMA KIYOSHI , MATSUMOTO KOZO , TAKADA TADASHI
IPC分类号： F25B9/02
摘要： PURPOSE:To avoid a harsh temperature change for a horizontal auxiliary cold source heat exchanger (heat exchanger, hereinafter) so as to improve the reliability of a plant by monitoring the auxiliary cold source inlet temperature for the heat exchanger and starting the control of supply rate of the auxiliary cold source when the preset temperature is reached by the function of the high pressure refrigerant outlet temperature of the heat exchanger. CONSTITUTION:After confirming with a temperature sensor 33 that liquid nitrogen has reached the liquid nitrogen supply opening of the inlet pipe 30 to the heat exchanger 11a, the liquid nitrogen supply valve 31 is so controlled as to precool the high pressure helium output from the heat exchanger 11a at a predetermined first temperature gradient. That is, the valve opening which has set relatively greater in the previous process is not throttled to a smaller opening, and then opened gradually. After the temperature at the high pressure helium outlet of the heat exchanger 11a has reached the second set temperature, the liquid nitrogen supply valve 31 is so controlled as to reduce the high pessure helium outlet temperature at the second temperature gradient. When the precooling further advances to the extent that the temperature at the high pressure helium outlet of the heat exchanger reaches the third set temperature (z) which is the normal operating temperature, the constant control is performed at said third temperature (z).

3. 发明专利

JPS60169750A INSULATING CAPACITY TESTING APPARATUS OF EXTREMELY LOW TEMPERATURE TRANSFER PIPING 失效
公开(公告)号：JPS60169750A
公开(公告)日：1985-09-03
申请号：JP2508884
申请日：1984-02-15
申请人： JAPAN ATOMIC ENERGY RES INST , HITACHI LTD
发明人： SHIBATA TAKEYORI , MATSUMOTO KOUZOU , HOSOMI NOBUYUKI , TAKEI NOBUYUKI , TAKADA TADASHI , HAYASHI KENJI
IPC分类号： G01N25/18 , G01K17/00 , G01K17/06
摘要： PURPOSE:To determine the invaded heat of a long or shape-complicated transfer pipe with good accuracy, by converting an extremely low temp. liquified cooling medium from a supply source to a gas-liquid separated two-phase stream and providing a dewer for supplying said two-phase stream to the transfer pipe. CONSTITUTION:Liquid nitrogen (LN2) supplied to a feed-out dewer 51 from a tank 10 is converted to a gas-liquid separated two-phase stream which is, in turn, supplied to a transfer pipe 22a through a temporarily constructed pipe 20b. Next, LN2 supplied to the pipe 22a through the pipe 20b absorbs invaded heat which flowed through the pipe 22a and, thereafter, only gaseous nitrogen (GN2) is supplied to a branched pipe 22b and GN2 flowed through the pipe 22b is discharged to the open air through a temporarily constructed pipe 20c, a dewer 55 and a heater 12a. At this time, total invaded heat can be calculated from enthalpy of LN2 calculated from pressure measured by a pressure gauge 31, enthalpy calculated from the temp. measured by a thermometer 32b and the flow amount measured by a flow meter 33a and invaded heat measured beforehand is subtracted from the total invaded heat to calculate the invaded heat of the pipes 22a, 22b. Therefore, the invaded heat of a long or shape-complicated transfer pipe can be determined with good accuracy.

4. 发明专利

JP2000246795A SIMULTANEOUSLY BIAXIALLY ORIENTING MACHINE FOR SHEET- LIKE MATERIAL 失效
公开(公告)号：JP2000246795A
公开(公告)日：2000-09-12
申请号：JP5509999
申请日：1999-03-03
申请人： HITACHI LTD , HITACHI TECHNO ENG
发明人： FUJISAKI MASAHIRO , TAKADA TADASHI
IPC分类号： B29C55/16 , B29K101/12 , B29L7/00
摘要： PROBLEM TO BE SOLVED: To stably feed at a high speed, to prolong lifetime, and to avoid a dirt due to oil scattering by always supporting a small ball seating bearing at an arbitrary position by one or above large balls in an entire feeding locus circumference of a linkage on a bed to become a feeding passage of the linkage. SOLUTION: Small balls 1 are placed to support a large ball 10 at a center of a curved surface of a ball receiver 12 disposing the balls 11, and a cover 13 for preventing an invasion of dust to a ball portion and sealing grease of a lubricant is mounted to the receiver 12. A small ball seating bearing for supporting a large ball by a plurality of small balls is installed on a feeding locus of a linkage on a bed 15 so that a supporting seat 14 surface hardened to a predetermined hardness attached to a lower end of a link shaft 17 of a side to be supported can be always supported by one or above large balls 10. Periodic supply of the grease and replacements of the balls 10, 11 are conducted by disassembling the cover 13. Thus, an oil dirt can be avoided, no sliding part exists at the linkage and the feeding passage sides, and hence lifetimes of the bearing and the passage can be enhanced and stably rapid feeding can be executed.

5. 发明专利

JP2000037772A SIMULTANEOUSLY AND BIAXIALLY STRETCHING APPARATUS 失效
公开(公告)号：JP2000037772A
公开(公告)日：2000-02-08
申请号：JP20896498
申请日：1998-07-24
申请人： HITACHI LTD , HITACHI TECHNO ENG , UNITIKA LTD
发明人： HAYASHI MASANORI , TAKADA TADASHI , TSUBOUCHI KENJI , ISHIKURA KATSUZO , YAMAUCHI HIROYUKI , HIRAKAWA TAKUYA
IPC分类号： B29C55/16 , B29K101/12 , B29L7/00 , B65H20/16 , B65H23/028
摘要： PROBLEM TO BE SOLVED: To eliminate a line shaft by individually providing motors for the rotational drive with respect to sprockets of right and left inlets and outlets so as to detect and control the rotational phase difference between the right and left motors or the like and simultaneously control the imbalance between the right and left sides by detecting the rotational phase difference between the sprockets of the inlets and outlets. SOLUTION: Motors 11R, 11L are connected to inlet-side sprockets 7R, 7L and 8R, 8L, while motors 21R, 21L drive outlet-side sprockets 9R, 9L. The rotational conditions of the motors 11R, 11L and 21R, 21L are detected, while the rotational conditions of the sprockets 7R, 7L and 8R, 8L and the sprockets 9R, 9L. In accordance with these detected signals, a controller 19 controls the difference between right and left sides of the motors 11R, 11L and 21R, 21L, and also controls the difference between the right and left sides of the variation in the stretching ratio in the film forwarding direction. This prevents tear of the subsequently stretched film and also eliminates a line shaft.

6. 发明专利

JPH11227042A SIMULTANEOUSLY BIAXIALLY ORIENTING MACHINE FOR SHEET-LIKE MATERIAL 失效
公开(公告)号：JPH11227042A
公开(公告)日：1999-08-24
申请号：JP2806098
申请日：1998-02-10
申请人： HITACHI LTD , HITACHI TECHNO ENG
发明人： HAYASHI MASANORI , TAKADA TADASHI
IPC分类号： B29C55/16 , B29K101/12 , B29L7/00 , B65H20/16 , B65H23/028
摘要： PROBLEM TO BE SOLVED: To stably feed at a high speed and to prolong a lifetime by installing bearings made of a single steel ball or a plurality of steel balls circumferentially disposed at the lowermost part of a link shaft for a joint of a link plate, and forming a groove at a bed side for guiding the balls. SOLUTION: A link plate 11 is coupled to other link plate via a ink shaft 13 or a link pin 14 to form an endless loop. In this ball bearing structure, a steel ball race 12 having a hole for mounting a steel ball 10 is provided at a lowermost part of the shaft 13. And the ball 10 is mounted in a hole of the race 12. Meanwhile, a bed 15 to become a feeding passage is constituted by a wear resistant material 20, a rounded groove 19 is formed at an upper surface side of the material 20, and the ball 10 is fed on the groove 19. And, a radial bearing 16 is installed at the shaft 13 at a position of an upper part of the race 12. And the bearing 16 is restricted by a guide groove formed of guide rails 4, 5, 6 and fed.

7. 发明专利

JPH09300076A WELDED STRUCTURE OF DIFFERENT KINDS OF MATERIALS 失效
公开(公告)号：JPH09300076A
公开(公告)日：1997-11-25
申请号：JP11996996
申请日：1996-05-15
申请人： HITACHI LTD
发明人： TANAKA TAKUMI , TAKADA TADASHI
IPC分类号： B23K9/23 , B21D51/18 , B23K9/00 , B23K103/18 , C07C51/265 , C07C63/26
摘要： PROBLEM TO BE SOLVED: To air-tightly weld corrosion resistant materials according to the corrosiveness of contents regardless of their mutual weld-joinability by making the connecting part between a vessel upper part member and a vessel lower part member manufactured with a clad steel the direct weld-joined structure. SOLUTION: The vessel upper part member 1a is made of a stainless steel and has the corrosion resistance to liquid aromatic compound of the contents. The vessel lower part member 1b is made of a titanium clad steel, and in the connecting part A between these materials, the base material 3 of the clad steel is the same material as the material of the vessel upper part member 1a. By this structure, a circular welding joint 4 can be made by directly weld- joining the vessel upper part member 1a with the vessel lower part member 1b. The joined vessel has perfect air-tightness and the reliability of a device and an equipment is improved. Further, the vessel has corrosion resistance to the contents. By this method, maintenance after installation is unnecessary and the cost needed for maintenance can be reduced.

8. 发明专利

JPH05306894A 失效
公开(公告)号：JPH05306894A
公开(公告)日：1993-11-19
申请号：JP6322792
申请日：1992-03-19
申请人： HITACHI LTD , HITACHI TECHNO ENG
发明人： HAYASHI MASANORI , ISHIKAWA HIROMASA , TAKADA TADASHI
IPC分类号： F28F9/02 , F28F9/18
摘要： PURPOSE:To provide a method of attaching a heat transfer tube to a tube plate in a heat-exchanger and the like, in which stress corrosion cracking at the tube end of the heat-exchanger and the like is prevented and a heat transfer tube attaching pitch is not increased more than necessity. CONSTITUTION:In this attaching method, the welding beveling of the attaching section of a heat transfer tube 1 is V-shaped in a section including Y-axis and a core rod 2, having the same material as the heat transfer tube 1, is inserted into the welding section of the tube while welding is started from two surfaces in the direction of Y-axis and the welding is carried out from the center of the group of heat transfer tubes 1 toward the outside of the group sequentially.

9. 发明专利

JPH0579507A ECCENTRIC FASTENING BOLT AND NUT 失效
公开(公告)号：JPH0579507A
公开(公告)日：1993-03-30
申请号：JP24091291
申请日：1991-09-20
申请人： HITACHI LTD , HITACHI TECHNO ENG
发明人： KANZAKI ATSUMITSU , FUJIMOTO MASARU , FURUKAWA KEISHIN , TAKADA TADASHI , NOMURA SEIJI , ISHIYAMA YOSHIO , OKAMOTO NAOTOMO , KUNIMITSU HISAO , INOUE YUKIO
IPC分类号： F16B39/10
摘要： PURPOSE:To eliminate damage of bolts and nuts at disassembling of a fastened part and also prevent looseness of fastening by making the outer circumference of a bolt head and a nut eccentric against the bolt trunk axis, and inserting a locking ring to the outer circumferential part after fastening the bolt. CONSTITUTION:An eccentric bolt 1 is provided with two flat faces 7 mutually in parallel on the circular head part, and the head part is eccentric against the the center axis of the bolt trunk part 2. An eccentric nut 3 is also provided with two flat faces 7, and the circumferential part is eccentric against the center axis of the bolt trunk part. After fastened members 4 are fastened with the eccentric bolt 1 and the eccentric nut 3, locking rings 5,6 are respectively inserted to the head part of the eccentric bolt 1 and the eccentric nut 3, and fixedly secured to the fastened members 4 by stop welding 8. The locking rings 5,6 are worked so as to fit the bore to the outer circumference of the bolt head and the nut. Hereby, although the bolt and the nut are apt to loosen, they can not be rotated with respective locking rings. Meanwhile, even if temperature difference is generated between the fastened members and the bolt, locking rings allow axial movement between them on the fitted face.

10. 发明专利

JPH04193338A TORQUE CORRESPONDING STIRRING BLADE 失效
公开(公告)号：JPH04193338A
公开(公告)日：1992-07-13
申请号：JP32282690
申请日：1990-11-28
申请人： HITACHI LTD
发明人： HARADA KAZUNORI , TAKADA TADASHI , KAWAMURA SUNAO , MARUYAMA EIJI , WATABE KENICHI
IPC分类号： B01F7/16
摘要： PURPOSE:To enable to sustain the adequate inclination angle of a blade against the start up of stirring and the variation of viscosity of a solution to be treated by using an elastic member to vary the inclination angle of stirring blade against the resistance corresponding to a variation of viscosity of the solution to be treated. CONSTITUTION:Corresponding to a variation of viscosity of a solution to be treated for stirring, stirring blade 6 is composed of an elastic member 5 so as to vary the inclination angle of the blade, corresponding to the fluid resistance. Consequently, the inclination angle of stirring blade is automatically varied by the fluid resistance, thus, the start up of stirring and a sudden variation of viscosity of contents are easily responded and stirring performances can be varied automatically.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式