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71. 发明专利

JP2000230664A SHUTOFF VALVE 失效
公开(公告)号：JP2000230664A
公开(公告)日：2000-08-22
申请号：JP3405899
申请日：1999-02-12
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAMAGUCHI MASAKI , TAKAOKA FUMIO
IPC分类号： F16K31/06
摘要： PROBLEM TO BE SOLVED: To provide a compact shutoff valve having a large sealing surface. SOLUTION: A flange 3 made of a metal plate has, at two opposed sides thereof, engaging nails 3c, 3d bent on a side of a driving mechanism 2. The engaging nails 3a, 3d have holes 3e, 3f for facilitating bending working at central root portions thereof, respectively. This constitution provides advantages in that roundness of the engaging nails 3a, 3b prevents a gas sealing surface 3k from reducing in width, thereby preventing gastightness from deteriorating, even if a shutoff valve is attached to an upper case of a conventional meter which is designed according to an outer dimension of an aluminum die-cast flange of the shutoff valve.

72. 发明专利

JPH11141870A GAS SHUTOFF DEVICE 失效
公开(公告)号：JPH11141870A
公开(公告)日：1999-05-28
申请号：JP30838897
申请日：1997-11-11
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAMAGUCHI MASAKI , MURAKAMI HIROKUNI , SHIRASAWA TADANORI
IPC分类号： F16K31/06 , F23N5/24
摘要： PROBLEM TO BE SOLVED: To make the opened- and closed-state of a shutoff valve by means of one kind of control section even when the shutoff valve is manufactured for different specifications or by a different manufacture. SOLUTION: First and second limit driving circuits 7 and 11 which are respectively adapted to the electrical characteristics of cutoff values 1a and 1b which are assumed to be used as a shutoff valve 1 are provided ant the limit driving circuit which is used for the actual shutoff valve 1 is stored in advance in a storing means 22. When a control section 23 detects the opened- and closed- state of the valve 1, the section 23 impresses a voltage upon the valve 1 by operating the adaptive limit control circuit stored in the storing means 22 and a transient response detecting section 15 detects the state of the transient response of the valve 1 and detects the opened- and closed-state of the valve based on the detected results. Since the resistance values of first and second limiting resistors 8 and 12 are set so that the same transient response may be outputted correspondingly to the electrical characteristics of the shutoff valves 1a and 1b, the control section 23 can discriminate on the same basis.

73. 发明专利

JPH11141717A SOLENOID VALVE 失效
公开(公告)号：JPH11141717A
公开(公告)日：1999-05-28
申请号：JP31016997
申请日：1997-11-12
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAMAGUCHI MASAKI , NINAGAWA NORIO
IPC分类号： F16K31/06
摘要： PROBLEM TO BE SOLVED: To reduce abrasion on a solid lubricating film of a guide pipe, and improve working durability. SOLUTION: In a movable iron core 3, its diameter D1 between an end 3b not having a valve element 4 and a position 3c formed inside from a valve element 4 side end 2a of a guide pipe 2 in a position where the valve element 4 is most projected in a sliding stroke L, is thick formed. In a part 3d retracted to an inside of the guide pipe 2 in the sliding stroke L between a position 3c and the valve body 4 side, its diameter D2 is formed narrower than the diameter D1 so as to be not brought into contact with the valve body 4 side end 2a in the case where the part 3d is inclined from the guide pipe 2 in a maximum level. As a result, a sliding contact part is not limited in one point of the valve element 4 side end 2a, abrasion on a solid lubricating film of the guide pipe 2 is unified, and working durability of a solenoid valve can be improved.

74. 发明专利

JPH09303601A SHUT-OFF VALVE 失效
公开(公告)号：JPH09303601A
公开(公告)日：1997-11-28
申请号：JP11454696
申请日：1996-05-09
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAMAGUCHI MASAKI , OZAKI YUKINORI , NINAKAWA NORIO , NIIMURA NORIO
IPC分类号： F16K31/06
摘要： PROBLEM TO BE SOLVED: To easily open a by-pass valve against a main cause of blocking the return operation such as the adhesion of synthetic rubber under a low temperature. SOLUTION: A valve shaft 7 interlocked with a movable iron core 6 abutting against a second move limiting means 11 on the way of the move stroke is provided with a by-pass valve part 9 penetrating a valve body 2 to open a valve. Also, a second elastic body 13 for energizing the valve shaft 7 toward the movable iron core 6 is provided. A first elastic body 12 for energizing the movable iron core 6 toward a valve seat 1 and a first move limiting means 10 for energizing the valve shaft 7 toward the valve seat 1 when the valve is closed are provided. Thus, since the by-pass valve part 9 is opened when the electromagnetic attraction on the way of move of the movable iron core 6 is intensified, a by-pass valve construction having the durability against a main cause of blocking the return operation can be realized.

75. 发明专利

JPH08200532A GAS EMERGENCY TRIP VALVE 失效
公开(公告)号：JPH08200532A
公开(公告)日：1996-08-06
申请号：JP993395
申请日：1995-01-25
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAMAGUCHI MASAKI , WAKAMIZU KIMIHIRO , NIIMURA NORIO
IPC分类号： F16K17/36 , F16K31/06
摘要： PURPOSE: To enhance the insulation level between a second yoke and a coil terminal by a simple means by covering a solenoid with a coil mold made from a synthetic resin, and molding a synthetic-resin wall, which extends along the end face of the second yoke, integral with the coil mold between the second yoke and the coil terminal. CONSTITUTION: This emergency trip valve comprises at least a solenoid 1; a moving iron core 4 inserted at one end into the center hole of the solenoid 1 and having a valve element 5 placed at the other end; a first yoke 6 placed perpendicular to the axis of the solenoid 1 and having a hole into which the moving iron core 4 can be inserted; and an approximately U-shaped second yoke 7 placed around the solenoid 1. The solenoid 1 is covered at its outer periphery with a coil mold 2 made from a synthetic resin, and has a synthetic- resin wall 8 formed integral with the coil mold 2 between the second yoke 7 and a coil terminal 3 and approximately along the end face of the second yoke 7. Thus the wall 8 of the coil mold 2 obstructs a rectilinear course of discharge between the second yoke 7 and the coil terminal 3, increasing its insulating distance.

76. 发明专利

JPH08106588A GAS SHUT-OFF DEVICE 失效
公开(公告)号：JPH08106588A
公开(公告)日：1996-04-23
申请号：JP24273094
申请日：1994-10-06
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YOSHIDA MIHO , SHIRASAWA TADANORI , OTANI TAKAHISA , YAMAGUCHI MASAKI
IPC分类号： G01F3/22 , F16K17/36 , F16K37/00 , G08B21/00 , G08B21/10 , G08B21/16
摘要： PURPOSE: To improve the working factor of a seismoscope at the time of earthquake which detects abnormality by operating periodically the seismoscope. CONSTITUTION: This device is provided with the seismoscope 2 to detect the earthquake and output a seismic signal G, a seismic signal discriminating part 4 which judges whether the seismic signal is being outputted or not, and outputs a pseudo operating signal D to instruct the pseudo operation of the seismoscope 2 if the seismic signal G is not being outputted, and a seismoscope pseudo operating means 5 to output a seismoscope operating signal A to make the seismoscope 2 execute pseudo operation on the basis of the pseudo operating signal D. Thus, the abnormality of the seismoscope 2 can be alarm-reprorted to the outside on the basis of a seismoscope abnormality signal I outputted in the case that the seismic signal G is not received even if the seismic signal discriminating part 4 outputs the pseudo operating signal D.

77. 发明专利

JPH07253200A CUTOFF VALVE 失效
公开(公告)号：JPH07253200A
公开(公告)日：1995-10-03
申请号：JP4250194
申请日：1994-03-14
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAMAGUCHI MASAKI , NIIMURA NORIO
IPC分类号： F16K17/36 , F16K31/06 , F17D5/02
摘要： PURPOSE:To enable a cut off valve to open by small electric power by controlling the movement of a valve body with respect to a movable iron core in such a manner that the maximum valve open distance of an auxiliary valve section formed by an auxiliary valve seat and the movable iron core is smaller than the maximum valve open distance of a main valve body formed by a main valve chamber and a valve body. CONSTITUTION:An auxiliary valve distance limiting means 14 is provided, which controls the movement of a valve body 22 with respect to a movable iron core 3 in such a manner that the maximum valve open distance 23 of an auxiliary valve section formed by an auxiliary valve seat 8 and an auxiliary valve rubber 17 is smaller than the maximum valve open distance 24 of a main valve section formed by a main valve seat 9 and the valve body 22. By this constitution, even if a valve rubber 11 is adhered onto the main valve seat 9 due to bodying such as tar content within gas and moisture, the adhesion of the main valve seat with the valve rubber 11 can be released by small electric power, and if no adhesion can be released, the safer cut-off valve is thereby provided, which is returned to a closed condition on the occasion.

78. 发明专利

JPH07239099A GAS SHUTTING-OFF DEVICE 失效
公开(公告)号：JPH07239099A
公开(公告)日：1995-09-12
申请号：JP3130094
申请日：1994-03-01
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SHIRASAWA TADANORI , NIIMURA NORIO , YAMAGUCHI MASAKI , OTANI TAKAHISA
IPC分类号： F16K17/36 , F17D5/02 , F23N5/24
摘要： PURPOSE:To reduce manual valve opening work by automatically opening a valve while maintaining safety during shutting off. CONSTITUTION:A control part 10 operates a driving part 3 closes a shutting-off valve 2 and shuts off a gas passage, when the abnormal amount of gas flow is detected by a flow measuring means 1, or when there is an abnormal signal issued from an earthquake sensor 7, a pressure sensor 8 and an outside input terminal 9 such as an alarm and the like. When there is any impact, an opening/ closing state detecting part 5 detects the opening/closing state of the shutting/off valve 2 by an impact signal from an impact detecting means 6, and outputs a recovery requesting signal when it is in a closed state. An automatic recovering part 11 operates the driving part 3 upon receiving the recovery requesting signal from the opening/closing state detecting part 5, opens the shutting-off valve 2, monitors occurrence of gas leakage by the flow measuring means 1 and the output of a recovery abnormal signal from the earthquake sensor 7, the pressure sensor 8 or the outside input terminal 9 for a specified period after the gas passage is opened, shuts off the valve when there is any abnormality and sends an opening operation completion signal to the control part 10 after a specified period of time when there is no abnormality.

79. 发明专利

JPH07233942A GAS INTERRUPTION EQUIPMENT 失效
公开(公告)号：JPH07233942A
公开(公告)日：1995-09-05
申请号：JP2516894
申请日：1994-02-23
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SHIRASAWA TADANORI , YAMAGUCHI MASAKI , OTANI TAKAHISA , YOSHIDA MIHO
IPC分类号： F16K17/36 , F17D5/02 , F23N5/24 , F23N5/26
摘要： PURPOSE:To detect the states of opening and closing of a gas emergency trip valve being different in a characteristic impedance and thereby to improve convenience. CONSTITUTION:In the case when a storage instruction signal from a storage instruction means 6 (a switch input from outside or the like) is present, a difference in a characteristic impedance between opening and closing of a gas emergency trip valve 1 is detected by a valve opening-closing state detecting means 5. An opening-closing determination value storage means 7 stores determination values of opening and closing of the valve on the basis of opening-closing signals of the detected opening and closing. The difference in the characteristic impedance of the valve 1 is detected by the valve opening-closing state detecting means 5 immediately after the opening and closing of the valve 1 are executed by a valve driving means 4 or on other occasions. A control part 3 compares the detected opening-closing signals with opening-closing determination signals stored in the opening-closing determination value storage means 7, conducts judgement on the opening and closing of the valve 1 and makes an alarm information means 8 execute information.

80. 发明专利

JPH0771636A GAS SHUTOFF VALVE 失效
公开(公告)号：JPH0771636A
公开(公告)日：1995-03-17
申请号：JP21727893
申请日：1993-09-01
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： NIIMURA NORIO , YAMAGUCHI MASAKI , SUGIYAMA MASAKI
IPC分类号： F16K31/06
摘要： PURPOSE:To reduce power consumption of a gas shutoff valve and improve performance at the time of resetting (opening valve). CONSTITUTION:A plunger 1, with a colunmar shape formed partially into a plane, and a main valve 2, mounted on this plunger 1, are arranged. A drive part K having a cylindrical slide part and a spring 8 interposed between the main valve 2 and the drive part K to energize the main valve 2 to a side of a main valve seat 9 are arranged. Thus when the plunger 1 is actuated, gas is prevented from being placed in a compressed condition.

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