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1. 发明专利

JPH09172726A DISASTER PREVENTION TROUGH FOR CONNECTION PART OF POWER CABLE 失效
公开(公告)号：JPH09172726A
公开(公告)日：1997-06-30
申请号：JP33038795
申请日：1995-12-19
申请人： TOKYO ELECTRIC POWER CO , HITACHI CABLE , SHOWA HIGHPOLYMER , ASAHI GLASS MATEX KK
发明人： TSUCHIYA SHINICHI , KURATA MAMORU , KAKIHANA TOSHIO , TOMITA HIROYASU , ABE KAZUTOSHI , SUDO MASANORI , TERAYAMA TAKU
IPC分类号： H02G9/04 , H02G15/24
摘要： PROBLEM TO BE SOLVED: To provide a disaster prevention trough for the connection part of a power cable in which extinguishment by smothering is performed even when an accident occurs in the connection part and besides, maintenance is unnecessary. SOLUTION: This disaster prevention trough 4 receives the connection part 11 of a power cable to prevent a fire due to the accident which occurs in the connection part 11. At that time, an external trough body 6 for receiving the connection part 11 of a power cable and a trough lid 7 for hermetically sealing the external trough body 6, which is floated from the external trough body 6 by the pressure of a gas generated at the time of the accident of the connection part 11 of a power cable and returned immediately after the discharge of the gas are provided, and a pipe-like internal trough 14 covering the connection part 11 is provided in the connection part 11 to make duplex structure.

2. 发明专利

JPH0426309A METHOD OF EXTENDING PIPE INTO PIPE LINE 失效
公开(公告)号：JPH0426309A
公开(公告)日：1992-01-29
申请号：JP12588890
申请日：1990-05-16
申请人： TOKYO ELECTRIC POWER CO , HITACHI CABLE
发明人： KAWASHIMA MICHIO , GOTO TOMOAKI , ABE KAZUTOSHI , TOMITA HIROYASU , MINAZU AKIRA
IPC分类号： H02G1/08
摘要： PURPOSE:To easily extend a long pipe without use of a draw wire and lubricant by pushing a pipe drawn in a manhole, into a pipeline with a vibrating force being applied to it. CONSTITUTION:A pipe 2 is supplied from a drum 1 positioned near a manhole 3, to a vibrator 6 through a hauling machine 4 in a manhole 1. While the pipe 2 is vibrated by the vibrator 6, the pipe 2 is pushed into a pipeline 5. A guide member 7 is provided at the tip of the pipe 2 to prevent foreign materials from getting into it and prevent it from being trapped by cables, etc., previously installed. Consequently, a friction coefficient is reduced and a long pipe can easily be extended to a pipeline without use of a draw wire and lubricant. This can be used for not only new pipelines but previously installed pipelines and is suitable for extension of an optical fiber.

3. 发明专利

JP2001157353A POWER CABLE JOINT 失效
公开(公告)号：JP2001157353A
公开(公告)日：2001-06-08
申请号：JP33000499
申请日：1999-11-19
申请人： HITACHI CABLE , TOKYO ELECTRIC POWER CO
发明人： GOTO TAKESHI , SAKAMAKI MASATOSHI , ABE KAZUTOSHI
IPC分类号： H02G15/08 , H02G15/10
摘要： PROBLEM TO BE SOLVED: To provide a power cable joint which can securely restrict the scattering directions of joint components when a grounding phenomenon occurs and protect existing equipment from damages caused by the scattering joint components. SOLUTION: A slit 10 is formed in the outer or inner surface of a joint case at an arbitrary position to restrict the scattering directions of joint components 12 in a joint case 5.

4. 发明专利

JP2000032646A COOLING-WATER FEEDING METHOD OF POWER CABLE LINE 失效
公开(公告)号：JP2000032646A
公开(公告)日：2000-01-28
申请号：JP19588498
申请日：1998-07-10
申请人： TOKYO ELECTRIC POWER CO , HITACHI CABLE
发明人： YONEMOTO NORIHIRO , SUDO YOSHIJI , TOMITA HIROYASU , ABE KAZUTOSHI , MINAGAWA TAKAHIRO
IPC分类号： H02G15/20
摘要： PROBLEM TO BE SOLVED: To cool efficiently the whole of a power cable line, by providing in the predetermined places of a cooling-water circulating route pressurizing pumps for compensating the pressure of a cooling water. SOLUTION: A cooling-water circulating route 4 piped along a power cable line comprises going and returning routes 5, 6. The going route 5 is connected with a water feeding pump 8 of a cooling station 7 to connect the returning route 6 with a water tank 9. After a cooling water in the water tank 9 is cooled by the cooling station 7, it is fed out therefrom by pressurizing it through the water feeding pump 8 to cool the power cable line in troughs 2, 3 by passing it through the going route 5 piped in the troughs 2, 3. Thereafter, the cooling water is turned in a U-shaped way in a folded portion 10 to return it to the water tank 9 via the returning route 6. The returned cooling water is cooled in the water tank 9 to thereafter feed it again into the going route 5 of the cooling-water circulating line 4. Thereby, making adjustable by pressurizing pumps 11, 12 the length of the power cable line and the differences between the elevations of power-cable-line laying places, the whole of the power cable line can be cooled efficiently by the minimum scale of the cooling station 7.

5. 发明专利

JP2004120836A Fixing cleat for power cable 审中-公开
公开(公告)号：JP2004120836A
公开(公告)日：2004-04-15
申请号：JP2002277573
申请日：2002-09-24
申请人： Hitachi Cable Ltd , Tokyo Electric Power Co Inc:The , 日立電線株式会社 , 東京電力株式会社
发明人： YONEMOTO NORIHIRO , MATSUI MASAKI , KAMOSHITA HIROSHI , ABE KAZUTOSHI
IPC分类号： E21F17/06 , F16L3/10 , F16L3/22 , F16L3/223 , H02G1/06 , H02G9/00
摘要： PROBLEM TO BE SOLVED: To provide a fixing cleat for a power cable which can improve the work efficiency and the cost at fixing a power cable to a wall face and enables more power cables to be arranged and fixed sideways. SOLUTION: A lower cable holding metal fitting 13 is fixed to a wall face 27 with a bolt 29a, then the first cable is laid according to the position of a hole 28, snake removing work is performed, and a lower cable fixing metal fitting 15 is put on it and temporarily fixed by a bolt. At the same time, the second one is fixed temporarily according to the position of a hole 29. Next, an upper cable holding metal fitting 21 is coupled with each metal fitting 15 and 16, and each spring 18 and 19 is attached to it, nuts 41 and 42 are fastened so that each cable may be fixed stably, and the temporary fixing bolt is removed. The third one is laid according to the position of a hole 30, snake removing work is performed, an upper cable fixing metal fitting 23 is put on it, and each of springs 25 and 26 is attached and nuts 62 and 63 are fastened. COPYRIGHT: (C)2004,JPO

6. 发明专利

JPH1070821A POWER-CABLE DISASTER-PREVENTING SHEET AND CABLE LINE USING IT 失效
公开(公告)号：JPH1070821A
公开(公告)日：1998-03-10
申请号：JP22399896
申请日：1996-08-26
申请人： TOKYO ELECTRIC POWER CO , HITACHI CABLE
发明人： TSUCHIYA SHINICHI , KURATA MAMORU , ABE KAZUTOSHI , TOMITA HIROYASU , KAKIHANA TOSHIO
IPC分类号： H02G9/00
摘要： PROBLEM TO BE SOLVED: To obtain a power-cable disaster-preventing sheet whose allowance with reference to an accident can be increased and whose application limit to an actual line is reduced by a method wherein a plurality of sleeve-shaped sheet bodies whose diameter is larger than the outside diameter of a power cable are piled up and their surface is coated with a nonflammable polyvinyl chloride or silicone rubber resin. SOLUTION: A power-cable disaster-preventing sheet 6 is formed to be a sleeve shape whose diameter (ϕ500mm) is larger than the outside diameter of a power cable 1, it is formed so as to cover the power cable 1, and it is flexible. In addition, the sheet 6 is formed in such a way that three or four sheet bodies 7 are piled up so as to be sewn together and that a coating layer 8 which is composed of a nonflammable polyvinyl chloride or silicone rubbler resin is formed on their outermost face so as to be set to an airtight state which prevents not only the circulation of the air but also the outflow of oil or smoke. Every sheet body 7 is an aramid sheet which is formed by weaving aramid fibers which are provided with high strength and with heat resistance, and its specifications are decided in such a way that its warps and its wefts are respectively at 300 deniers.

7. 发明专利

JPH1014076A PROTECTIVE COVER FOR TERMINAL CONNECTION OF POWER CABLE 失效
公开(公告)号：JPH1014076A
公开(公告)日：1998-01-16
申请号：JP17984296
申请日：1996-06-21
申请人： TOKYO ELECTRIC POWER CO , HITACHI CABLE
发明人： NAKATOGAWA YUTAKA , KURATA MAMORU , ABE KAZUTOSHI , TOMITA HIROYASU , MURAKAMI JUNJI
IPC分类号： H02G15/02
摘要： PROBLEM TO BE SOLVED: To provide a protective cover for terminal connections of power cables that, if any accident occurs in proximity to a terminal connection of a power cable, prevents the members of the terminal connection and protective plate from being scattered and affecting surrounding equipment, and facilitates internal inspection. SOLUTION: A terminal connection 4 of a power cable is supported on a frame 1, and the lower part of the terminal connection is covered with a cylindrical pipe 5 made of FRP, which is formed by coupling two halves together using sockets. Bands 6 having high strength, made of aramid fiber or the like are wound around the pipe 5, and are tied up with brackets or the like. There are a plurality of the bands tied up at intervals. If a high pressure is produced due to an accident, the bands are elongated to relieve the pressure and then restored. This controls damage to the protective cover and prevents the members of the terminal connection from being scattered.

8. 发明专利

JPH09238420A PROTECTIVE PIPE FOR EXPOSED PART OF POWER CABLE 失效
公开(公告)号：JPH09238420A
公开(公告)日：1997-09-09
申请号：JP6911796
申请日：1996-02-29
申请人： TOKYO ELECTRIC POWER CO , HITACHI CABLE
发明人： TSUCHIYA SHINICHI , KURATA MAMORU , IKEDA YASUHIRO , ABE KAZUTOSHI
IPC分类号： H02G7/00
摘要： PROBLEM TO BE SOLVED: To realize protective pipes which can be attached easily and are hardly scattered by a blast caused by a power cable fault. SOLUTION: A plurality of protective pipes 1 are connected to each other with insertable sockets 5. Spacers attached to the inside surfaces of the protective pipes 1 keep a uniform gap between the protective pipes 1 and a power cable. A plurality of slits 13 are provided in the protective pipe 1. A flexible band 4 is laid under the socket 5 through the slit 13 of one pipe 1 and then laid on the next pipe 1 through the slit of the next pipe 1 and thus laid under the socket 5 and on the pipe 1 alternately to link a plurality of the protective pipes 1 together. As the large and uniform gap is maintained by the spacers, an expansion caused by a blast at the time of a power cable fault is equalized and released. Further, by employing a semi-circularly divided pipe structure, the pipes can be detached from the cable having the fault easily. As the pipes 1 are linked together by the flexible bands 4, harmful influences upon other equipment which are caused by the scattered pipes at the time of the power cable fault, can be avoided.

9. 发明专利

JPH05236628A 失效
公开(公告)号：JPH05236628A
公开(公告)日：1993-09-10
申请号：JP6096792
申请日：1992-02-18
申请人： TOKYO ELECTRIC POWER CO , HITACHI CABLE , SHOWA HIGHPOLYMER , ASAHI GLASS MATETSUKUSU KK
发明人： KOMABA TAKESHI , KANAI KIYOHIKO , ABE KAZUTOSHI , TOMITA HIROYASU , ISHII TAKESHI , ISE KAZUYUKI
IPC分类号： A62C3/16 , H01F27/02 , H02G9/04
摘要： PURPOSE:To block intrusion of air and prevent firing by winding stretchable bands two times around the fastener which connects the main body of a trough for power cables and an upper cover through upper cover fall-off prevention boards, and by allowing the upper cover to float for the release of the high- pressure gas when a cable is grounded, and to settle it to the original position in order to airtightly close the trough. CONSTITUTION:A trough main body 1 and a trough upper cover 2 are connected by a fastener 3 and rivets 6 to constitute a trough for power cables. In the interior of the trough, the power cables are laid. At appropriate intervals, the upper cover fall-off prevention boards 9 are arranged to abut on the fastener 9, the outside of which is wound by stretchable bands 10 two times so that the trough is tightly fastened. When a high pressure gas is generated due to the grounding of a cable, the upper cover is once opened, but as the pressure is lowered, the cover is settled to its original position by the resiliency of the trough bands to avoid any air intrusion. In this way, a firing of the cables is automatically prevented.

10. 发明专利

JP2002345119A INSTALLATION METHOD OF POWER CABLE 失效
公开(公告)号：JP2002345119A
公开(公告)日：2002-11-29
申请号：JP2001147797
申请日：2001-05-17
申请人： TOKYO ELECTRIC POWER CO , HITACHI CABLE
发明人： YONEMOTO NORIHIRO , MATSUI MASAKI , KAMOSHITA HIROSHI , ABE KAZUTOSHI
IPC分类号： H02G1/06 , H02G9/00
摘要： PROBLEM TO BE SOLVED: To provide an installation method of power cables which can minimize space necessary in a tunnel having a rectangular cross-section, and is low in cost, and has satisfactory maintainability. SOLUTION: In an installation method 1 of power cables, where power cables 3a -3c are laid in zig-zag forms in a tunnel 2 having a rectangular cross-section, cleates 4 for fixing the power cables 3a -3c at prescribed intervals are attached directly to inner wall surfaces 2s of the tunnel 2.

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