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1. 发明专利

JP2004105994A Welding method for tube and infusing nozzle for shielding gas for welding 有权
公开(公告)号：JP2004105994A
公开(公告)日：2004-04-08
申请号：JP2002269358
申请日：2002-09-17
申请人： Hitachi Engineering & Services Co Ltd , Hitachi Ltd , 株式会社日立エンジニアリングサービス , 株式会社日立製作所
发明人： FUKUDA KOREHISA , ISHIWATARI MASAYUKI , SHIRAISHI YASUKAZU , MOGAKI KAZUHIKO , SUDO SHUNICHI
IPC分类号： B23K9/16 , B23K9/028 , B23K101/06
摘要： PROBLEM TO BE SOLVED: To provide a method for locally sealing a shielding gas for welding into a tube near a butt welding zone of piping, in a system structure in which sealing of a shielding gas is difficult at the time of welding piping or in which no water soluble film can be used. SOLUTION: In butt welding of a pair of pipes in piping 12, columnar dry ice 11 having an outer diameter equal to the inner diameter of the piping is inserted into the piping, forming a wall inside the piping 12 for the purpose of a purge dam of the shielding gas for welding, thereby suppressing air flow in the air space 13 on the non-welding side inside the piping as well as in the air space 14 inside the piping near the welding back bead. A nozzle 16 for infusing the shielding gas is inserted into the piping 12 from a hole drilled in the groove abutting part in the butt welding zone of the piping 12, with the shielding gas 18 infused into space 14 inside the piping to lower the oxygen concentration, to prevent oxidation in the welding back bead on the piping inner face at the time of the welding. In addition, the outer periphery of the piping in which the dry ice is installed is wrapped with a freezing jacket 10 utilizing liquefied carbon dioxide, suppressing vaporization of the dry ice. COPYRIGHT: (C)2004,JPO

2. 发明专利

JP2006318150A Pipe production management method and system therefor 有权
标题翻译：管道生产管理方法及系统
公开(公告)号：JP2006318150A
公开(公告)日：2006-11-24
申请号：JP2005139274
申请日：2005-05-12
申请人： Hitachi Engineering & Services Co Ltd , Hitachi Ltd , 株式会社日立エンジニアリング・アンド・サービス , 株式会社日立製作所
发明人： AOKI MASATAKA , INOUE TAKANORI , NOCHIDA KOICHI , ISHIWATARI MASAYUKI , KOMATA HISASHI
IPC分类号： G05B19/418
CPC分类号： Y02P80/40 , Y02P90/18 , Y02P90/185
摘要： PROBLEM TO BE SOLVED: To reduce a burden on preparation of a management document necessary for management of a production process related to a pipe to reduce a time spent for the preparation and inspection. SOLUTION: A server 21 generates a blank layout drawing optimum to cut an un-machined standard-length pipe in accordance with a size to be machined on the basis of a pipe production drawing, and transmits information including the blank layout drawing and a material identification number applied to each the pipe cut on the basis of the blank layout drawing. A server 11 records the applied material identification number in a wireless tag chip 1 stuck to each the pipe cut on the basis of the blank layout drawing together with material test data. The server 21 reads the material test data and the material identification number from the wireless tag chip 1 stuck to each the already cut pipe to be delivered, and collates them with a material standard value previously registered in a database 213, retrieved with the material identification number as a key to generate a material management recording table. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：减少管理与管道相关的生产过程所需的管理文件的负担，以减少准备和检查所花费的时间。解决方案：服务器21产生最佳的空白布局图，以便根据管道生产图的要加工的尺寸来切割未加工的标准长度的管道，并且发送包括坯件布局图和在坯料布局图的基础上应用于每个管切割的材料标识号。服务器11将材料识别号码与材料测试数据一起记录在粘贴到每个管道切割的无线标签芯片1的基础上，基于空白布局图。服务器21从无线标签芯片1中读取材料测试数据和材料识别号码，粘贴到已经被切割的每个已被切割的管道上，并将它们与先前在数据库213中注册的材料标准值进行比较，数字作为生成材料管理记录表的关键。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2005240442A Hole plugging method for through hole of building 有权
标题翻译：用于通孔的建筑物的孔插入方法
公开(公告)号：JP2005240442A
公开(公告)日：2005-09-08
申请号：JP2004052654
申请日：2004-02-27
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KOGAI MANAMI , MURAKAMI TORU , ISHIWATARI MASAYUKI
IPC分类号： E04F17/08 , E04B2/84 , F16L5/00
摘要： PROBLEM TO BE SOLVED: To provide a hole plugging method for the parts to be filled with a mortar among the parts, where it is needed to plug holes for leading a pipe, a duct, etc. therethrough provided in an opening formed in a wall of a building like a nuclear power plant or a reprocessing plant, by which the works are carried out efficiently while improving and securing the filling performance. SOLUTION: The pipe 14 is passed through a square opening 12 piercing a skeleton 11 of the building. A form 15 made of an acrylic board or a toughened glass is provided at each of both ends of the square opening 12 in a manner that a gap communicating the square opening 12 and the outside is formed at the upper part. The mortar in a hopper 38 is sucked by a pump 35 through a hose 37, and is placed in advance in the square opening 12 through the hose 33 to reach a filling level 19 where the pipe 14 is buried. After the mortar placed in advance is hardened, a space 17 is filled with a post-placing mortar by hand. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了在要部件之间填充砂浆的部件提供一种堵孔方法，需要在形成的开口中插入用于引导管，导管等的孔，在像核电厂或后处理厂的建筑物的墙上，通过该墙壁有效地进行工作，同时改善和确保灌装性能。解决方案：管道14穿过穿过建筑物的骨架11的方形开口12。在方形开口12的两端各设一个由丙烯酸板或钢化玻璃制成的一个形式15，在上部形成有连通方形开口12和外部的间隙。料斗38中的砂浆通过软管37被泵35吸入，并且通过软管33预先放置在方形开口12中，以达到埋入管14的填充水平19。在预先放置的砂浆硬化之后，用手将后置的砂浆填充到空间17中。版权所有（C）2005，JPO＆NCIPI

4. 发明专利

JP2005095948A Method for improving residual stress of piping 有权
标题翻译：改善管道残余应力的方法
公开(公告)号：JP2005095948A
公开(公告)日：2005-04-14
申请号：JP2003334503
申请日：2003-09-26
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： AOIKE SATOSHI , ENOMOTO KUNIO , SUGANO SATOSHI , ISHIWATARI MASAYUKI , HISATSUNE SHINICHI , ORITANI NAOHIKO
IPC分类号： B23K31/00
摘要： PROBLEM TO BE SOLVED: To prevent stress corrosion cracking at a portion near weld zone of stainless steel piping by means of a compact device.
SOLUTION: Piping 1 is supplied with water and watertight plugs 3 and 3 are formed at two separate places in the piping. The water 2 inside the piping between the watertight plugs is cooled by supplying dry ice 8 into an outer container 4 and then an inner container 5. Since the piping is cooled, the water is solidified so that ice is formed. Attendant on the formation of the ice, the volume of the piping inside expands so that the piping is subjected to plastic deformation. This improves the residual stress of the piping.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：通过紧凑的装置防止不锈钢管道焊接区附近部分的应力腐蚀开裂。
解决方案：配管1供应水和水密塞3和3形成在管道中的两个不同的地方。通过将干冰8供给到外部容器4中，然后将内部容器5供给到水密封塞之间的管道内的水2来冷却。由于管道被冷却，水被固化，从而形成冰。在冰的形成上，管道内部的体积膨胀使得管道受到塑性变形。这改善了管道的残余应力。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JPS6310081A STRESS CORROSION CRACKING PREVENTING WELDING METHOD FOR STAINLESS STEEL 失效
公开(公告)号：JPS6310081A
公开(公告)日：1988-01-16
申请号：JP15406586
申请日：1986-07-02
申请人： HITACHI LTD
发明人： SASAKI CHOMEI , ISHIWATARI MASAYUKI
IPC分类号： B23K9/04 , B23K9/23
摘要： PURPOSE:To prevent stainless steel from being cracked due to stress corrosion by removing the external surface of a thick-walled member to which a small member is fitted to the prescribed depth and width and performing the overlay welding on the removed part while cooling the internal surface of the member to weld the small member. CONSTITUTION:The depth under the thickness of the member 1 and the width over the welding end of a seat 6 fitted to the external surface of the member are removed from the external surface of the pipe member 1. Next, a weld overlaying part 3 is formed on the removed part 2 while cooling the internal surface of the member 1 by flowing water A. Continuously, the seat 6 is fitted to the overlaying part 3 of the member 1 whose hole 5 is worked to weld 7 the seat and afterward, furthermore, to weld a pipe 8 with a small caliber. Further, the flowing water A is also allowed to run through the hole 5 to perform the cooling in case of welding the seat 6 and the pipe 8. As this result, the residual compression stress takes place on each weld zone. In this way, the austenitic stainless steel can be prevented from being cracked due to the stress corrosion.

6. 发明专利

JP2000161411A ELASTICALLY/PLASTICALLY SUPPORTING DEVICE 失效
公开(公告)号：JP2000161411A
公开(公告)日：2000-06-16
申请号：JP33529798
申请日：1998-11-26
申请人： HITACHI LTD
发明人： SAKAKIDA TAKAAKI , ISHIWATARI MASAYUKI , ONO SATORU
IPC分类号： F16F15/02 , F16F7/12
摘要： PROBLEM TO BE SOLVED: To grasp the replacing time for a plastical plate by providing a mechanical fuse for the determination of replacing time thereof before fatigue breakage occurs therein to a connecting block and an end block. SOLUTION: Vertical grooves 17 whose longitudinal depths are the same while the widths are constant are provided at a plate part 42 of an end block 4 at which a plate part 32 of a connecting block 3 to be connected via a universal bracket 6, universal box 18 and a bracket 19, and a pin 13 inserted in an oblong hole 12 formed in the plate part 32 of the block 3 are fixed, and a mechanical fuse 11 is provided thereat. The fuse 11 is a fatigue breakage preventing part that is to be broken to sense before hand the fatigue damage of material of a plastical plate caused by repeated load and displacement or deviation resulting from fatigue breakage thereof. Accordingly the purpose is attained.

7. 发明专利

JPS60136698A METHOD OF FORMING ICE PLUG 失效
公开(公告)号：JPS60136698A
公开(公告)日：1985-07-20
申请号：JP24860183
申请日：1983-12-23
申请人： HITACHI LTD , HITACHI SANSO KK
发明人： ISHIWATARI MASAYUKI , SASAKI CHIYOUMEI , NAKAMURA KENJI
IPC分类号： F16L55/10 , G21D1/00

8. 发明专利

JPH09311198A INSTRUMENTED NOZZLE 失效
公开(公告)号：JPH09311198A
公开(公告)日：1997-12-02
申请号：JP12680896
申请日：1996-05-22
申请人： HITACHI LTD
发明人： HAYASHI MAKOTO , ISHIWATARI MASAYUKI , TOKAWA YUICHI , ENOMOTO KUNIO
IPC分类号： G21D1/00 , B23K9/00 , B23K9/028
摘要： PROBLEM TO BE SOLVED: To prevent a fretting fatigue failure by providing a difference in level on the mounting welding part of a nozzle so as to have a diameter larger than the nozzle tip, and connecting this diameter increased part of the nozzle to a stub provided on a piping by welding. SOLUTION: A nozzle 13 has a difference in level to increase the diameter on the base side. The inside diameter of a stub 12 is increased according to tit, and the nozzle 13 is inserted thereto and connected in a mounting welding part 15'. When the upper end of the stub 12 is conformed to the corner part of the difference in level part of the nozzle 13 followed by welding, fretting fatigue is not caused since the outer surface of the nozzle 13 does not contact the inner surface of the stub 12 or the welding metal. Only the stress collection resulted from the reverse corrugated form of the welding part 15' can be considered. Thus, the failure by fretting fatigue resulted from the flowing vibration of the nozzle 13 can be prevented.

9. 发明专利

JPH04131591A CARBON STEEL PIPING FREEZING METHOD 失效
公开(公告)号：JPH04131591A
公开(公告)日：1992-05-06
申请号：JP25230190
申请日：1990-09-21
申请人： HITACHI LTD
发明人： ISHIWATARI MASAYUKI , GOTOU NOBUO
IPC分类号： G21D1/00 , F16L55/10
摘要： PURPOSE:To enable the application of a freezing,method to carbon steel piping and obtain the freezing method of high safety and reliability by executing the carbon steel piping freezing method after the confirmation of a crack being smaller than the previously computed allowed limit crack measure. CONSTITUTION:A carbon steel piping freezing method is divided into two stages: design and construction. The design stage is formed of three steps: the determination of a freezing method executed place (a), the computation of stress generated during the execution of the method (b) and the computation of allowed limit crack measure during the execution of the freezing method (c). The construction stage is formed of three steps: the measure inspection of a crack existing in the method executed place (d) which is to be performed before the execution of the freezing method, the confirmation of the existing crack measure being less than the allowed limit crack measure (e) and the execution of the freezing method (f). This enables the execution of the freezing method of high safety and reliability on carbon steel piping.

10. 发明专利

JP2000161943A APPARATUS FOR MEASURING PIPE THICKNESS 失效
公开(公告)号：JP2000161943A
公开(公告)日：2000-06-16
申请号：JP33530298
申请日：1998-11-26
申请人： HITACHI LTD
发明人： MIYAZAKI KATSUMASA , YANAGIDA NOBUYOSHI , SUGANO SATOSHI , MURAYAMA KOICHI , ISHIWATARI MASAYUKI
IPC分类号： G01B21/08 , G01N25/72
摘要： PROBLEM TO BE SOLVED: To apply a complex piping system for reducing measurement time by estimating thickness distribution, based on a temperature distribution in a natural cooling process of a pipe which has been heated into an isothermal state. SOLUTION: A plurality of thermocouples 11 re connected to a pipe 21 whose thickness is to be measured, and while heaters 12 placed on an upstream and a downstream of the pipe 21 are controlled by a temperature controller 13, heat is applied so that the regions of the pipe 21 to be measured are at isothermal state (approximately 100 to 350 deg.C). When the pipe 21 reaches a prescribed isothermal state, the heaters 12 are turned off, and a temperature distribution of the pipe 21 being cooled spontaneously is measured by a temperature distribution measuring device (thermograph) 14, and a computer 15 transfers temperature data taken at arbitrary times and arbitrary coordinates of the pipe 21 to a computer 16. The computer 16 compares the temperature data at arbitrary time and coordinate as the optimum value for heat conduction analysis results of each thinned form, which are stored in a heat conduction analysis data base 16 for determining the thickness distribution of the pipe 21 (maximum thinned depth, maximum thinned angle, thinned length, and thinned angle).

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