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11. 发明专利

JPH0852804A CONTROL METHOD FOR ELECTRICITY CONDUCTION OF ELECTRIC FUSION-WELD TYPE PIPE JOINT 失效
公开(公告)号：JPH0852804A
公开(公告)日：1996-02-27
申请号：JP18734794
申请日：1994-08-09
申请人： TOKYO GAS CO LTD , HITACHI METALS LTD
发明人： ANAMIZU TAKASHI , INOUE YASUYUKI
IPC分类号： B29C65/00 , B29C65/34 , B29K105/20 , B29L23/00 , B29L31/24
摘要： PURPOSE:To prevent an insufficient fusion welding from occurring by discriminating certainly an aperture of a pipe joint by a method where a lower limit for electricity conduction-stop time, an upper limit for electricity conduction-atop time, and a temperature rise rate by electricity conduction-stop according to an aperture size are obtained, and electricity conduction to a heating wire is controlled from those values. CONSTITUTION:A power is supplied to a heating wire 2 provided on an inner surface of a thermoplastic resin made joint, and the joint body is fusion welded to a thermoplastic resin made pipe 50 fitted onto the inner surface by heating electricity conduction. A temperature sensor 6 is fitted to a pipe joint 1 to detect initial temperature To of the pipe joint 1. Electricity conduction stop temperature Te is obtained from the initial temperature To, and temperature rise rate Tp, Tp=(T-To)/(Te-To) is obtained from temperature T of the pipe joint 1 when certain set time St has elapsed in conduction of electricity, and the aperture size is discriminated. Besides, upper and lower limits for electricity conduction stop temperature rise rate are obtained. Electricity conduction to the heating wire 2 is controlled from the electricity conduction-stop time and the electricity conduction-stop temperature rise rate. Thereby, excess fusion weld by excessively heating the fusion welded part between the pipe 50 and the pipe joint 1 and inferiority in fusion weld by excess electricity conduction fusion weld time are not caused.

12. 发明专利

JPH01277730A APPARATUS FOR INSPECTING AIRTIGHTNESS 失效
公开(公告)号：JPH01277730A
公开(公告)日：1989-11-08
申请号：JP10689788
申请日：1988-04-28
申请人： HITACHI METALS LTD , TOKYO GAS CO LTD
发明人： KAZAMA YOICHIRO , INOUE YASUYUKI , TAKADA HIDEMASA
IPC分类号： G01M3/28
摘要： PURPOSE:To detect the fine gas leak on the secondary side of a shutoff valve certainly, easily and rapidly even when there is a fluctuation in the pressure on the primary side, by measuring a drop in the pressure on the secondary side after the closure of the shutoff valve. CONSTITUTION:A gas is guided to a branch pipe 3 through a sector governer 2 and further guided to each building through a shutoff valve 4 to reach a terminal gas device 6. A pressure gas sensor 5 is mounted on the secondary side of the shutoff valve 4 and, after the shutoff valve 4 is closed, the pressure P2 of the gas on the secondary side is measured by the pressure sensor 5 and the difference pressure DELTAP=P1-P2 between the pressure P2 and initial pressure P1 is counted by a counter 18. When said difference pressure DELTAP exceeds a predetermined set value within a predetermined set time after the shutoff valve 4 is closed, it is meant that there is a gas leak on the secondary side of the shutoff valve and, therefore, an alarm informing the gas leak is emitted.

13. 发明专利

JP2002163617A BAR CODE LABEL AND PRODUCT WITH BAR CODE LABEL 失效
公开(公告)号：JP2002163617A
公开(公告)日：2002-06-07
申请号：JP2000363533
申请日：2000-11-29
申请人： HITACHI METALS LTD
发明人： INOUE YASUYUKI
IPC分类号： G06K19/06 , G06K1/12 , G06K19/00 , G09F3/00
摘要： PROBLEM TO BE SOLVED: To provide a bar code label and a product with bar code label, with which an error in sticking of the bar code label can be easily examined and a product defect caused by the label sticking error can be prevented. SOLUTION: In the car code label printed with a bar code expressing product information, this bar code label is composed of the bar code and label position information displaying the information of a product to stick the bar code label with the specified position of the label. Besides, in the bar code label composed of the bar code expressing the product information and the label position information displaying the product information to stick the label with the specified position of the label and a product stuck with the bar code label thereon, in the product with bar code label, the indication corresponding to the specified position of the label position information is provided on the product to stick the label and the label position information is made correspondent to the indication on the product.

14. 发明专利

JP2000035179A ELECTRIC FUSING JOINT, AND DEVICE AND METHOD OF CONTROLLING ELECTRIC FUSION 失效
公开(公告)号：JP2000035179A
公开(公告)日：2000-02-02
申请号：JP20625798
申请日：1998-07-22
申请人： HITACHI METALS LTD
发明人： FUKUSHIMA SHUJI , INOUE YASUYUKI
IPC分类号： F16L47/02 , B29C65/34 , B29L23/00 , B29L31/24
摘要： PROBLEM TO BE SOLVED: To prevent the connection of bad quality due to reuse and re- energization by inputting production date of an electric fusing joint into a bar code, and eliminating a lack of the count of the production number inside of the bar code. SOLUTION: A reading means 17 of an electric fusion control device 10 reads out fusion history data such as production data recorded in a bar code 1 fitted to an electric fusing joint 2, and sends the read data to a computing control unit 12. The computing control unit 12 collates the fusion history data read from the bar code 1 of the joint 2 to be connected by fusion with the past fusion history data recorded in a memory unit 13 for comparison so as to detect the overlap. In the case where an overlap is detected, an alarm is output by a display 16. In the case where an overlap is not detected, connection is judged possible. In the only case where the computing control unit 12 determines possibility of connection, current is supplied from an output unit 15 to the joint 2 for fusing connection.

15. 发明专利

JPH0972482A CURRENT-CARRYING CONTROL METHOD FOR ELECTRIC FUSION COUPLING 失效
公开(公告)号：JPH0972482A
公开(公告)日：1997-03-18
申请号：JP22505095
申请日：1995-09-01
申请人： HITACHI METALS LTD
发明人： INOUE YASUYUKI
IPC分类号： F16L47/02 , B29C65/00 , B29C65/34 , B29L23/00
摘要： PROBLEM TO BE SOLVED: To remove defective fusion by eliminating unevenness in a temperature rising speed at an upper limit time and to perform normal fusion at a lower limit time by putting upper and lower limit current-carrying times and a standard current- carrying time are displayed into bar codes, mounting them on a coupling body and monitoring the current-carrying times based on the monitoring of the temperature of a fusion part. SOLUTION: In a current-carrying plug 9, a connector 8 to fit a thermocouple 6 in a connector pin is arranged in juxtaposition for integral formation and simultaneously with insertion of a connector 8 part into a connector pin, the tip surface 6e of the thermocouple 6 is brought into contact with the bottom 12 of a recessed hole 4. The other end of the fusion plug 9 is connected to a controller and an abnormality monitoring signal is fed to the controller side. A bar code is marked on the outer peripheral surface of a coupling body 1 and mounted on a connector pin 3 and an upper surface side in the vicinity of a recessed hole 4. Information is coded on the bar code which is recorded. Information of the bar code is read by a bar code reading device connected to a controller. This constitution improves reliability by controlling a current-carrying time togetherwith control of the temperature of a fusion part.

16. 发明专利

JPH06210738A METHOD OF BONDING ELECTRICALLY WELDABLE JOINT 失效
公开(公告)号：JPH06210738A
公开(公告)日：1994-08-02
申请号：JP452293
申请日：1993-01-14
申请人： HITACHI METALS LTD
发明人： INOUE YASUYUKI
IPC分类号： B29C65/34 , B29L31/24
摘要： PURPOSE:To easily remove sensors inserted into sensor holes after finishing the supply of power and enhance working efficiency by removing the sensors from the sensor holes of a pipe joint during a period of time until temperatures in the sensor holes of the pipe joint are lowered from the temperatures at the time of finishing the supply of power to a fixed level after stopping the supply of power to an electric heating wire. CONSTITUTION:The title bonding method is carried out by supplying electric power to an electric heating wire 2 embedded in a thermoplastic pipe joint 1, stopping the supply of power to the electric heating wire 2 when the temperatures of sensors inserted into sensor holes of the pipe joint 1 reach a level at which the supply of power is finished, and electrically welding a thermoplastic pipe inserted into the pipe joint. In this case, after the supply of power to the electric heating wire 2 is stopped, the sensors are removed from the sensor holes of the pipe joint during a period of time until temperatures in the sensor holes of the pipe joint 1 fall by 50 deg.C from the level at which the supply of power is finished. Thereby, the sensors can be easily removed, the time required for welding and bonding work is shortened, and working efficiency is enhanced.

17. 发明专利

JPH0549894A DEVICE FOR DILUTING FLUID AND METHOD THEREFOR 失效
公开(公告)号：JPH0549894A
公开(公告)日：1993-03-02
申请号：JP22646391
申请日：1991-08-12
申请人： IWATANI INT CORP , IWATANI GAS KK , HITACHI METALS LTD
发明人： MIYAZAKI ATSUSHI , KAJIYAMA TETSUO , MATSUMOTO KAZUTO , TANAKA MAKOTO , INOUE YASUYUKI , MORI MASAHIRO
IPC分类号： B01F15/04
摘要： PURPOSE:To provide a device and a method for diluting a fluid without drastically lowering accuracy even if a dilution rate for a raw material fluid is set up at a wide range. CONSTITUTION:In this fluid diluting device, a raw material fluid supplied from plural supplying pipes 1 and 3 is diluted at a specified dilution ratio through a flow rate controller MFC1-MFC4 attached to the pipes, respectively, and is flown out through an outlet pipe 17. Every flow rate controllers MFC1-MFC4 are provided so as to flow the raw material fluid or a diluting fluid at a ratio of at least >=1/10 a full scale of the flow rate.

18. 发明专利

JPH0460286A CONTROL VALVE 失效
公开(公告)号：JPH0460286A
公开(公告)日：1992-02-26
申请号：JP17089890
申请日：1990-06-27
申请人： OSAKA GAS CO LTD , HITACHI METALS LTD
发明人： KIKUTA TAKASHI , HAYASHI YOSHITAKA , INOUE YASUYUKI
IPC分类号： F16K1/18 , F16K31/02 , H02N2/00
摘要： PURPOSE:To make it possible to accurately adjust the opening degree of a control valve and sufficiently increase the opening degree in full opening state by opening and closing a pair of valve plates through a pair of links by means of the rotation of the ultra sonic motor provided in a valve body. CONSTITUTION:When an ultrasonic motor 2 is actuated, the rotary section 11 with screws, which is located at the center of a plurality of arms 10 radially arranged, is rotated by the rotation of a movable section 9, and a moving section 4 with screws is axially moved. For this reason, a pair of valve plates 13 and 14 are rotated through a pair of links 6 and 7 around a fixed shaft 12 for opening and closing a valve element 5. In this case, since the ultra sonic motor 2 is provided in a valve body, space outside the valve body 1 can be omitted and the air tightness can also be applied easily. In addition, the opening degree of the valve plates 13 and 14 can accurately be adjusted, and desired flowing characteristics can be obtained. Moreover, the opening degree of the valve body 1 in the full opening state can sufficiently be increased.

19. 发明专利

JPH09207225A ELECTRO-FUSION WELDER AND METHOD FOR TURNING ON ELECTRICITY USING THAT 失效
公开(公告)号：JPH09207225A
公开(公告)日：1997-08-12
申请号：JP1847696
申请日：1996-02-05
申请人： HITACHI METALS LTD
发明人： INAGAKI MITSUSACHI , INOUE YASUYUKI
IPC分类号： F16L47/02 , B29C65/34 , B29L23/00
摘要： PROBLEM TO BE SOLVED: To obtain always normal fusion weld connection by removing an aging-like error generated in electro-fusion welding operation. SOLUTION: This electro-fusion welder supplies fusion weld energy En to an electro-fusion weld joint 1 having a heating wire 2 buried in a fusion weld part of a joint main body 6, and connecter pins 4, 4 connected to both ends of the heating wire 2 by connecting mechanically terminals to the connecter pins 4, 4. In this case, a means is provided wherein a current value determining the fusion weld energy En is classified into a plurality of steps (11, 12, 13...), and constant current control En =I Rt (I=11, 12, 13...) by a plurality of constant current values is carried out.

20. 发明专利

JPH07256761A ELECTRIFICATION CONTROL METHOD FOR ELECTRIC FUSING JOINT 失效
公开(公告)号：JPH07256761A
公开(公告)日：1995-10-09
申请号：JP6847494
申请日：1994-04-06
申请人： HITACHI METALS LTD
发明人： INOUE YASUYUKI
IPC分类号： B29C65/34 , B29L23/00 , B29L31/24 , F16L47/02
摘要： PURPOSE:To make it possible to control correct discrimination of a caliber of a pipe joint during electrifying and fusing even one having large caliper where a difference in resistance values is reduced, by a method wherein dimensional discrimination of the pipe joint is performed by a temperature rising rate, according to which suspension time of electrification is controlled. CONSTITUTION:A thickness of a pipe joint 1 on the center side is made thicker than a thickness of an end part, a terminal 22 on the center side and temperature measuring hole 15 are positioned respectively more outside of a terminal 21 on the end part side and as for distances of the pipe joint 1 from the inner circumferential surface of the pipe joint 1, the recessed holes 14, 15 are provided respectively close by and far away off from the surface. After insertion of a resin pipe 50 into an opening part 13 of the pipe joint, when an electric nichrome wire 2 is turned on by connecting with a power supply source, a resin close by the electric nichrome wire is molten by heat of the electric nichrome wire, the molten resin is expanded to the outer circumferential surface side of the resin pipe 50, the outer circumferential surface of the resin pipe is molten and fusion with the resin pipe is performed.

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