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1. 发明专利

JPS6219683A CRUCIBLE FURNACE 失效
公开(公告)号：JPS6219683A
公开(公告)日：1987-01-28
申请号：JP15927685
申请日：1985-07-18
申请人： OSAKA GAS CO LTD , NITSUKAN CHIKURO KOGYO KK
发明人： GOTO YUJI , SHIMIZU YUKIO , YAMAMOTO HIROSHI , YOKOYAMA HISAO , KINOSHITA AKIRA
IPC分类号： F27B14/00 , F27B14/10

2. 发明专利

JPH03129286A MELTING DEVICE FOR MACHINE CHIPS 失效
公开(公告)号：JPH03129286A
公开(公告)日：1991-06-03
申请号：JP26751389
申请日：1989-10-14
申请人： HITACHI METALS LTD , NITSUKAN CHIKURO KOGYO KK
发明人： YAMASHITA MITOSHI , KINOSHITA AKIRA
IPC分类号： F27B3/04 , C22B7/00 , C22B21/00 , C22B21/06
摘要： PURPOSE:To improve the melt efficiency of chips without widely collapsing the shape of the outer surface of the whole of molten chips by a method wherein the inflow hole of a charge container communicated to the outflow hole thereof is formed in the pipe wall of a delivery pipe mounted on the delivery side of a pump with the aid of which molten chips is conveyed. CONSTITUTION:Molten chips 2 in a melting furnace 1 flows in a charge container 10 through a feed port 12 of the container 10. With this state, when a pump 30 is run with the aid of an air motor 31, molten chips 2 in the melting furnace sucked with the aid of the pump 30 is delivered in an outer pipe 21 through the right end of an inner pipe 23 of a delivery pipe 20, and the velocity of flow of the molten chips 2 is decreased in the outer pipe 21. As a result, the pressure of the molten chips at the right end of the inner pipe 23 is remarkably decreased, and since an inflow hole 24 communicated with an outflow hole 13 of the charge container 10 is formed in the part, the molten chips 2 passing the pump 30, finally, produces a drive flow. The molten chips 2 in the charge container 10 is sucked with a force in the delivery pipe 20, and the two flows are joined together and the mixture is returned through the delivery pipe 20 to the melting furnace 1. This constitution enables improvement of the melting efficiency of chips.

3. 发明专利

JPH07110192A NON-METAL MELTING FURNACE 失效
公开(公告)号：JPH07110192A
公开(公告)日：1995-04-25
申请号：JP28162693
申请日：1993-10-14
申请人： TOKYO GAS CO LTD , NITSUKAN CHIKURO KOGYO KK
发明人： WATANABE KAZUFUMI , ISEDA YOSHIHISA , KINOSHITA AKIRA , YOSHIKAWA HIDEO
IPC分类号： F27B17/00
摘要： PURPOSE:To cause a non-metal melting furnace to be one of which operation can be performed within a short period of time, in an energy-saving mode and to be operated for multi types and in less volume production. CONSTITUTION:A furnace 1 is formed with some refractory materials. One opening is used as a molten material feeding port 2a and the other opening as a molten metal feeding-out port 2b. This tube 2 having such openings or a trough member is passed through the furnace and fixed to the furnace 1. The furnace 1 is provided with a heating means for heating a part of a cavity 10 within the tube 2 or trough in the furnace 1. Either the tube 2 or the trough member is inclined and passed through the furnace 1 or passed in a horizontal direction, the furnace 1 is supported by an inclination changing means to enable the inclination of the furnace 1 to be changed. Either the tube 2 or the trough is preferably set in such a way that it may be removaly attached to the furnace 1.

4. 发明专利

JPH07110190A NON-IRON METAL MELTING AND HOLDING FURNACE 失效
公开(公告)号：JPH07110190A
公开(公告)日：1995-04-25
申请号：JP28162793
申请日：1993-10-14
申请人： TOKYO GAS CO LTD , NITSUKAN CHIKURO KOGYO KK
发明人： WATANABE KAZUFUMI , ISEDA YOSHIHISA , KINOSHITA AKIRA , YOSHIKAWA HIDEO
IPC分类号： F27B14/08 , F27B14/14
摘要： PURPOSE:To faciliate manufacturing, repairing and partial replacement, improve a thermal efficiency and reduce a difference in temperatures at an upper part and a lower part of a cylindrical furnace having a crucible by a method wherein the furnace is formed in such a way that it may be divided into a plurality of upper and lower segment stages, and means for heating the stored crucible is arranged. CONSTITUTION:A base block 3 comprised of a side circumference 1 and a bottom plate 2 is applied as a crucible receiving part. The base block is made of refractory material. In turn, a metal mat 6 is arranged at an inner surface of a cylinder 4 made of refractory material through a mixture gas room 5. A surface combustion burner 8 provided with a mixture gas supplying port 7 opened at the mixture gas room 5 is arranged and mounted at the upper surface of a side circumference 1 through a seal member 9. An upper furnace member 13 made of refractory material is mounted at the upper part of the surface combustion burner 8 through a seal member 12. A discharged gas cylinder 11 opened into a space 10 above the bottom plate 2 is arranged. Then, a crucible 16 is installed on the upper surface of the bottom plate 2 through the block 15 and then a lid 18 hermetical closing the space 10 is arranged at the upper edge of the crucible through a seal member 17.

5. 发明专利

JP2001194340A MEASURING INSTRUMENT FOR STATE OF CATHODIC PROTECTION 失效
公开(公告)号：JP2001194340A
公开(公告)日：2001-07-19
申请号：JP2000002939
申请日：2000-01-11
申请人： OSAKA GAS CO LTD
发明人： KINOSHITA AKIRA
IPC分类号： G01N27/72 , G01N27/04 , G01N33/20
摘要： PROBLEM TO BE SOLVED: To facilitate the maintenance control on the state of corrosion protection of a cathodically protected underground buried pipe, or the like. SOLUTION: This measuring instrument 1 or the state of cathodic protection has a processing circuit 10, a display 11, a signal generator 12, a potential/ current measuring instrument 13, a printer 15, and the like, these being integrated in an enclosure 2, and can perform examination of the state of corrosion protection, judgment of insulation performance, and the like. The insulation performance of an insulation flange part 22 between the underground buried pipe 20 and an indoor pipe 21 can be examined by impressing a low-frequency exciting signal generated by the signal generator 12 on surfaces of the pipe 20 and on the pipe 21, separately, via two contacts 8, 9, and measuring by a magnetometric sensor 3 a magnetic field set up by an exciting current. To judge whether the state of cathodic protection is good or bad, the protective potential of the surface of the pipe 20 is measured by using the measuring instrument 13 or a protective current supplied from an Mg positive electrode etc., used for corrosion protection is measured. Results of the measurement and results of the insulation performance judgment can be printed and outputted from the printer 15.

6. 发明专利

JPH11124695A CORROSION INHIBITING METHOD AND STRUCTURE OF PIPELINE 失效
公开(公告)号：JPH11124695A
公开(公告)日：1999-05-11
申请号：JP28846997
申请日：1997-10-21
申请人： OSAKA GAS CO LTD
发明人： NISHIKAWA AKINOBU , SAKAGUCHI YOSHIMI , NONAKA HIDEMASA , OKADA SHUJI , NAKAGAMI NOBORU , KOSHIMIZU YUJIRO , KINOSHITA AKIRA
IPC分类号： F28F19/00 , C23F13/00
摘要： PROBLEM TO BE SOLVED: To obtain a corrosion inhibiting technique as a countermeasure for a jumping current applicable even under high temps. and high pressures and which is not attained conventionally. SOLUTION: In the pipeline formed by connecting a conductive material 2 with an insulating joint V and in which a conductive liq. flows, an electrochemical process for preveiously obtaining a corrosion limiting voltage as the potential difference between both ends of the insulating joint not corroding the conductive piping material is applied to prevent the corrosion of the conductive piping material caused by the jumping current in the liq. by the potential difference between both ends of the insulating joint, and plural insulating joints are furnished to the pipeline to control the potential difference generated between both ends of the insulating joint below the corrosion limiting voltage.

7. 发明专利

JPH09264734A PIPE WALL THICKNESS MEASURING APPARATUS 失效
公开(公告)号：JPH09264734A
公开(公告)日：1997-10-07
申请号：JP7575296
申请日：1996-03-29
申请人： OSAKA GAS CO LTD
发明人： TSUKIMOTO FUMIO , KINOSHITA AKIRA
IPC分类号： G01B17/02 , G01N21/88 , G01N21/954
摘要： PROBLEM TO BE SOLVED: To provide a pipe wall thickness measuring apparatus which enables measurement requiring a relatively small amount of contact medium by holding a fixed capacity of contact medium irrelevant to the capacity of a gas duct itself between the position of a measuring subject and an ultrasonic contact maker. SOLUTION: Outer circumference parts of 0 rings 30 and 30 externally fitted onto a body 20 has a dimension enough to be closely fit an the internal wall surface 101 of an upright tube part of a tube 10 deg. to be measured and a closed space S is so formed to be wrapped by three of the external surface of the body 20, the internal wall surface 101 of the tube 100 to be measured and the O rings 30 and 30 in a state that the above circumference parts are inserted into the tube 100 to be measured. An ultrasonic contact maker 40 and an outlet 50 of a contact medium M are located in the closed space S. In the measurement of the thickness of the pipe wall, the contact medium M is introduced into the closed space S from the outlet 50 through a contact medium supply tube 70, thereby enabling measurement such a manner that the closed space S is filled with the contact medium M.

8. 发明专利

JPH05230677A CORROSION PREVENTIVE METHOD FOR UNDERGROUND BURIED METALLIC PIPE 失效
公开(公告)号：JPH05230677A
公开(公告)日：1993-09-07
申请号：JP3794292
申请日：1992-02-25
申请人： OSAKA GAS CO LTD
发明人： KINOSHITA AKIRA
IPC分类号： C23F13/00 , C23F13/04 , C23F13/22
摘要： PURPOSE:To efficiently execute drainage when the stray current from electric train rails runs in an underground buried metallic pipe. CONSTITUTION:The stray current 111 from an electric train 14 flows into a pipe 12 which is the metallic pipe buried in soil 11. An inflow current 120 flows to a potential control type force drainer 20 from a drainage point 19. The amplifier AMP 2 of the potential control type force drainer 20 increases the internal resistance of a second transistor(TR) 22 to decrease a drainage current 122 and to prevent overprotection when the potential of the drainage point 19 changes to a base side with the potential of a reference electrode 18 as a reference. The internal resistance of the second TR 22 decreases to increase the drainage current 122 and the potential of the drainage point 19 is maintained at the base by utilizing the drainage current when the potential at the drainage point 19 changes to the noble side. A protective current 121 is supplied from a current rectifier 23 via a first transistor 21 to protect the pipe 12 when the drainage current does not flow and when the protective current cannot be maintained by the drainage current alone.

9. 发明专利

JP2003253479A PROTECTIVE POTENTIAL MEASURING SYSTEM AND CHARGING SYSTEM UTILIZING PROTECTIVE CURRENT 审中-公开
公开(公告)号：JP2003253479A
公开(公告)日：2003-09-10
申请号：JP2002057522
申请日：2002-03-04
申请人： OSAKA GAS CO LTD
发明人： KINOSHITA AKIRA
IPC分类号： C23F13/00 , H01M10/44 , H02J7/00
摘要： PROBLEM TO BE SOLVED: To provide a protective potential measuring system which can be used for a long period of time by performing charging to a battery. SOLUTION: The protective potential measuring system has a protective potential imparting means 4 for imparting a protective potential to an underground buried object, protective current charging means 8 for charging the charging battery 42, protective potential measuring means 6 for measuring the protective potential of the object 2, and changeover switching means 58 for changing over the operation of a data logger 56. In charging the charging battery 42, the switching means 58 is maintained in a first state and the charging means 8 charges the charging battery 42 by utilizing the protective current. In measuring the protective potential of the object 2, the changeover switching means is maintained in a second state and the measuring means 6 measures the protective potential of the object 2. COPYRIGHT: (C)2003,JPO

10. 发明专利

JP2002098731A PIPELINE INSULATION DETERMINATION METHOD AND DEVICE 失效
公开(公告)号：JP2002098731A
公开(公告)日：2002-04-05
申请号：JP2000289028
申请日：2000-09-22
申请人： OSAKA GAS CO LTD
发明人： KINOSHITA AKIRA , NISHIKAWA AKINOBU
IPC分类号： G01R31/12 , G01N27/72
摘要： PROBLEM TO BE SOLVED: To determine the insulation state of a pipe easily and accurately. SOLUTION: In this pipeline insulation determination device 20, the insulation state of metal pipes 21, 22 insulated by an insulation flange 23 is determined by detecting a low-frequency alternating current flowing through the insulation flange 23. The detection of the low-frequency alternating current is executed by a magnetic sensor in an insulation determination sensor 26 installed on a current-carrying point 24B on one side. In the insulation determination sensor 26, an electrode for carrying a current and the magnetic sensor are integrated beforehand so as to be on the optimum position. The output of a detection voltage is seldom generated on the non-current-carrying side in the case of optimum positions shown by black round marks as shown by figure (b), and the detection voltage is acquired only on the current-carrying side. In the case of non-optimum positions shown by white round marks, the detection voltage is acquired also on the non-current-carrying side under the influence of a current-carrying cable 27B.

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