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1. 发明专利

JPH04145823A INSULATING MOLDING FOR POWER CABLE CONNECTION AND CONNECTING METHOD THEREWITH 失效
公开(公告)号：JPH04145823A
公开(公告)日：1992-05-19
申请号：JP26646990
申请日：1990-10-05
申请人： FURUKAWA ELECTRIC CO LTD , TOKYO ELECTRIC POWER CO
发明人： SAKUMA SUSUMU , SHINAGAWA NOBUYUKI , NAKANO TAKAO , SHINDO SHUNICHI
IPC分类号： H02G1/14 , H02G15/08
摘要： PURPOSE:To lationalize cable construction for reducing a period of time for work of connecting power cable by nearly equalizing the inner diameter of the internal electrodes to be embedded in an insulating molded body with the outer diameter of a cable conductor connecting tool and by adopting a method of inserting cables in the insulating molded body from both sides to connect the cables. CONSTITUTION:The inner diameter of internal electrodes 27 to be embedded in a cylindrical insulating block 22 is nearly equalized with the outer diameter of a cable conductor connecting tool, and the outer diameter of the whole of the joint section is made small. A method of connecting cable conductors introduced here is first to insert an insulating molded body 21 in cable 37a at one side. At the tip of a contactor 43a connected by compression to a cable conductor, a pin 51 supported elastically with a spring 49 is prepared, whereby when the contactor 43a is inserted in a cable conductor connecting tool 33 the contactor 43a is locked in a pin hole 53. Then, the contactor 43a is electrically connected to the cable conductor by a tulip contactor 55 prepared in advance in the cable conductor connecting tool 33. Next, cable 37b at the other side is inserted in the insulating molded body to connect the contactor 43b to the cable conductor connecting tool 33.

2. 发明专利

JPH0522822A MANUFACTURE OF CYLINDRICAL INSULATING BLOCK FOR CONNECTING POWER CABLE 失效
公开(公告)号：JPH0522822A
公开(公告)日：1993-01-29
申请号：JP19358991
申请日：1991-07-09
申请人： FURUKAWA ELECTRIC CO LTD , TOKYO ELECTRIC POWER CO
发明人： TAKAHASHI YOSHIHISA , SAKUMA SUSUMU , SHINAGAWA NOBUYUKI , NODA HAJIME , NAKANO TAKAO
IPC分类号： H02G1/14 , H02G15/18
摘要： PURPOSE:To manufacture a block for connection having excellent characteristics by cutting a long-sized body, in which an internal semi-conducting layer, an insulating layer in non-crosslinking or incomplete crosslinking and an external semi-conducting layer are formed on the outer circumference of a central conductor, in required length and drawing the central conductor. CONSTITUTION:An internal semiconductor layer 15, an insulating layer 17 and an external semiconductor layer 19 are co-extruded and molded on the outer circumference of a central conductor 13 composed of a pipe made of a metal or a torsion wire having a circular cross section. A protective tape not shown and a temporary shielding layer 21 are mounted on the outside, thus forming a long-sized body 11. A crosslinking material is mixed into polyethylene in the three layers 15, 17, 19, and a dopant is mixed into the internal and external-semiconductor layers 15, 19, but the crosslinking material is not decomposed and is left as it is not reacted. The central conductor of the long-sized body 11 is charged and normal electric insulating performance is confirmed, the long-sized body 11 is cut in required length, the protective tape and the temporary shielding layer 21 are removed, and an end section is machined in a shape proper to the connection of a power cable. Accordingly, products having high reliability are mass-produced efficiently.

3. 发明专利

DE60130306D1 未知
公开(公告)号：DE60130306D1
公开(公告)日：2007-10-18
申请号：DE60130306
申请日：2001-11-20
申请人： FURUKAWA ELECTRIC CO LTD
发明人： YANAGISAWA TAKESHI , YONEMURA TOKUI , NAKANO TAKAO
IPC分类号： H01B17/26 , H01B17/32 , H01B17/00 , H01B19/00
摘要： An organic composite insulator (tube) and method for production thereof giving an external flashover characteristic, enabling a reduction of the cost, and enabling a reduction of the size of the insulator. The outside diameters of the insulator sheath body and watersheds at only the intermediate insulator sheath 3c corresponding to the vicinity of the tip 6a of the top of the inside electrode 6 are made larger than the outside diameters of the body and watersheds of the upper and lower insulator sheaths 3a and 3b. The electric field of the sheath surface in the vicinity of the tip 6a of the top of the inside electrode 6 exhibiting the maximum electric field in the large size insulator is weakened and the maximum electric field part is moved to the top portion of the sheath body and watersheds enlarged in inside diameter. Further, the insulator act to block the propagation of the air dielectric breakdown occurring at the maximum electric field part to the ground side end fitting 2' and thereby to increase the external flashover voltage.

4. 发明专利

CA2363587C ORGANIC COMPOSITE INSULATOR AND METHOD OF PRODUCING THE SAME 未知
公开(公告)号：CA2363587C
公开(公告)日：2007-07-03
申请号：CA2363587
申请日：2001-11-19
申请人： FURUKAWA ELECTRIC CO LTD
发明人： YONEMURA TOKUI , YANAGISAWA TAKESHI , NAKANO TAKAO
IPC分类号： H01B17/26 , H01B17/60 , H01B3/18 , H01B7/17 , H01B17/00 , H01B17/32 , H01B19/00
摘要： An organic composite insulator (tube) and method for production thereof giving an external flashover characteristic, enabling a reduction of the cost, and enabling a reduction of the size of the insulator. The outside diameters of the insulator sheath body and watersheds at only the intermediate insulator sheath 3c corresponding to the vicinity of the tip 6a of the top of the inside electrode 6 are made larger than the outside diameters of the body and watersheds of the upper and lower insulator sheaths 3a and 3b. The electric field of the sheath surface in the vicinity of the tip 6a of the top of the inside electrode 6 exhibiting the maximum electric field in the large size insulator is weakened and the maximum electric field part is moved to the top portion of the sheath body and watersheds enlarged in inside diameter. Further, the insulator act to block the propagation of the air dielectric breakdown occurring at the maximum electric field part to the ground side end fitting 2' and thereby to increase the external flashover voltage.

5. 发明专利

CA2363587A1 ORGANIC COMPOSITE INSULATOR AND METHOD OF PRODUCING THE SAME 未知
公开(公告)号：CA2363587A1
公开(公告)日：2002-05-21
申请号：CA2363587
申请日：2001-11-19
申请人： FURUKAWA ELECTRIC CO LTD
发明人： YONEMURA TOKUI , NAKANO TAKAO , YANAGISAWA TAKESHI
IPC分类号： H01B17/26 , H01B17/00 , H01B17/32 , H01B19/00 , H01B17/60 , H01B7/17 , H01B3/18
摘要： An organic composite insulator (tube) and method for production thereof giving an external flashover characteristic, enabling a reduction of the cost, and enabling a reduction of the size of the insulator. The outside diameters of the insulator sheath body and watersheds at only the intermediate insulator sheath 3c corresponding to the vicinity of the tip 6a of the top of the inside electrode 6 are made larger than the outside diameters of the body and watersheds of the upper and lower insulator sheaths 3a and 3b. The electric field of the sheath surface in the vicinity of the tip 6a of the top of the inside electrode 6 exhibiting the maximum electric field in the large size insulator is weakened and the maximum electric field part is moved to the top portion of the sheath body and watersheds enlarged in inside diameter. Further, the insulator act to block the propagation of the air dielectric breakdown occurring at the maximum electric field part to the ground side end fitting 2' and thereby to increase the external flashover voltage.

6. 发明专利

DE60130306T2 未知
公开(公告)号：DE60130306T2
公开(公告)日：2008-06-05
申请号：DE60130306
申请日：2001-11-20
申请人： FURUKAWA ELECTRIC CO LTD
发明人： YANAGISAWA TAKESHI , YONEMURA TOKUI , NAKANO TAKAO
IPC分类号： H01B17/26 , H01B17/32 , H01B17/00 , H01B19/00
摘要： An organic composite insulator (tube) and method for production thereof giving an external flashover characteristic, enabling a reduction of the cost, and enabling a reduction of the size of the insulator. The outside diameters of the insulator sheath body and watersheds at only the intermediate insulator sheath 3c corresponding to the vicinity of the tip 6a of the top of the inside electrode 6 are made larger than the outside diameters of the body and watersheds of the upper and lower insulator sheaths 3a and 3b. The electric field of the sheath surface in the vicinity of the tip 6a of the top of the inside electrode 6 exhibiting the maximum electric field in the large size insulator is weakened and the maximum electric field part is moved to the top portion of the sheath body and watersheds enlarged in inside diameter. Further, the insulator act to block the propagation of the air dielectric breakdown occurring at the maximum electric field part to the ground side end fitting 2' and thereby to increase the external flashover voltage.

7. 发明专利

DE3361147D1 INSULATING JOINT FOR RUBBER OR PLASTIC INSULATED POWER CABLE 未知
公开(公告)号：DE3361147D1
公开(公告)日：1985-12-12
申请号：DE3361147
申请日：1983-03-10
申请人： FURUKAWA ELECTRIC CO LTD
发明人： IRIE SHIN-ICHI , YAMASHITA YASUHIRO , NAKANO TAKAO , TANABE TERUYOSHI
IPC分类号： H02G15/08 , H01B1/24 , H02G1/14 , H02G15/00 , H02G15/103 , H02G1/16
摘要： In an insulating joint for a rubber or plastic insulated power cable, insulation shields are formed around insulation layers covering cable conductor joint portions of adjacent cables so that the insulation shields are longitudinally opposed to each other with a layer with high dielectric constant and high volume resistivity interposed therebetween. The layer comprises a mixture consisting of 100 parts by weight of a rubber or plastic as a base, 50 to 700 parts by weight of one or both of silicon carbide or zinc oxide, and 2 to 60 parts by weight of carbon black.

8. 发明专利

JPH03285283A FORMATION OF TAPE-WOUND MOLD CONNECTION PART 失效
公开(公告)号：JPH03285283A
公开(公告)日：1991-12-16
申请号：JP8671990
申请日：1990-03-31
申请人： FURUKAWA ELECTRIC CO LTD
发明人： NAKANO TAKAO
IPC分类号： H01R43/00
摘要： PURPOSE:To facilitate dismantlement and repair of a cable connection part when foreign substaces are detected inside an insulation layer, by mold-forming the insulation layer which is X-rayed for such foreign substances after providing a tape-wound insulation layer. CONSTITUTION:Conductors 1 are connected by a sleeve 2, around the whole of which a tape is wound to form into an insulation layer 3 outside the sleeve 2. Next, the insulation layer 3 is X-rayed for foreign matters. When they are found, the layer 3 is unwound to remove them and then the sleeve 2 is wound again with the tape to form into the insulation layer 3. When no foreign matters are found, a metal mold for molding is mounted on the layer 3 for forming the layer 3 into a mold.

9. 发明专利

JPH0311910A REPAIR OF RUBBER-PLASTIC INSULATED POWER CABLE IN DIELECTRIC BREAKDOWN 失效
公开(公告)号：JPH0311910A
公开(公告)日：1991-01-21
申请号：JP14203689
申请日：1989-06-06
申请人： FURUKAWA ELECTRIC CO LTD
发明人： IIZUKA HIROYUKI , IWATA YOSHISUKE , NAKANO TAKAO , SHINAGAWA NOBUYUKI
IPC分类号： H02G1/16
摘要： PURPOSE:To repair a power cable in dielectric breakdown within a short period by cutting the power cable at the spot in dielectric breakdown once and by forming a cable joint by the use of a premould joint insulator. CONSTITUTION:The transmission to a power cable 1 is stopped to cut it off at the sport in dielectric breakdown. At any point of time after cutting it off, a cylindrical premould joint insulator 13 is fitted on to a cable insulator 6 of the power cable 1 on one side and is kept shifted. The cable insulator 6 including the dielectric breakdown spot is removed and both cable conductors 7 are exposed respectively. The cable conductors 7 are mutually joined to form a cable conductor joint 9. The premould joint insulator 13 is shifted and moved to fix on to the cable conductor connection section 9, by which a cable joint 2 is formed. By repairing the power cable at the dielectric breakdown spot in this way by the use of the premould joint insulator 13, the power cable 1 can be repaired within a short period at a low cost to restore to the normal condition from an accident.

10. 发明专利

JPH0132730B2 失效
公开(公告)号：JPH0132730B2
公开(公告)日：1989-07-10
申请号：JP3663682
申请日：1982-03-10
申请人： FURUKAWA ELECTRIC CO LTD
发明人： IRIE SHINICHI , YAMASHITA YASUHIRO , NAKANO TAKAO , TANABE TERUYOSHI
IPC分类号： H02G15/08 , H01B1/24 , H02G1/14 , H02G15/00 , H02G15/103

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