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21. 发明专利

JPH11312421A FRP TUBE FOR POLYMER SP INSULATOR AND ITS MANUFACTURE 失效
公开(公告)号：JPH11312421A
公开(公告)日：1999-11-09
申请号：JP11890298
申请日：1998-04-28
申请人： NGK INSULATORS LTD
发明人： NAKAYAMA TETSUYA
IPC分类号： H01B17/00 , H01B19/00
摘要： PROBLEM TO BE SOLVED: To design a thin-walled FRP tube of small diameter without causing cost increase. SOLUTION: A polymer SP(station post) insulator 1 comprises an FRP tube 2 and a covering 3 made of rubber and consisting of a trunk part 4 provided on the periphery of the FRP tube 2 and a plurality of sheds 5, and rib parts 12-1 to 12-4 projecting toward the center of the FRP tube 2 are provided on the inner circumference of the FRP tube 2. The FRP tube 2 is manufactured by forming grooves in a mandrel for forming the rib parts 12-1 to 12-4, filling portions of the grooves with fibers wound in these grooves, and forming a cylinder part 11 by a filament winding method with respect to the mandrel obtained.

22. 发明专利

JPH10149732A POLYMER INSULATOR TUBE 失效
公开(公告)号：JPH10149732A
公开(公告)日：1998-06-02
申请号：JP30651396
申请日：1996-11-18
申请人： NGK INSULATORS LTD
发明人： NAKAYAMA TETSUYA , SOGA MASASHIGE
IPC分类号： H01B17/00 , H01B17/26
摘要： PROBLEM TO BE SOLVED: To provide a polymer insulator tube of which a flange metal tool and a FRP core are not parted even if bending load is applied at high temperature for a long duration. SOLUTION: This polymer insulator is constituted of a hollow core member 1, an outer coating 2 made of an insulating polymer material and formed on the outer circumference of the hollow core member 1, and a flange metal tool 3 installed in both end parts of the hollow core member 1 and the outer coating 2 is constituted of a sheath member 2-1 covering the outer circumference of the hollow core member 1 and a plurality of shed parts 2-2 formed at proper gaps in the longitudinal direction and extended outward in the radius direction from the outer circumference of the sheath member 2-1. In this case, a reinforcing member 5 to prevent the peeling of an adhesive part between the flange metal tool 3 and the hollow core member 1 is formed at the position corresponding to the flange metal tool 3.

23. 发明专利

JPH09251816A DIE SYSTEM FOR MOLDING COMPOSITE BUSHING SHEATH 失效
公开(公告)号：JPH09251816A
公开(公告)日：1997-09-22
申请号：JP5925296
申请日：1996-03-15
申请人： NGK INSULATORS LTD
发明人： MORIYA TSUTOMU , KUNIEDA SHIGEHIKO , NAKAYAMA TETSUYA
IPC分类号： B29C33/76 , H01B17/00 , H01B19/00
摘要： PROBLEM TO BE SOLVED: To mold sheaths of a plurality of types of composite bushings with a single die system by forming a mold unit for molding a composite bushing tapered sheath for use in molding one arbitrary of the plurality of types. SOLUTION: A mold unit 4 for molding a composite bushing tapered sheath comprises numerous separable segments 41 -4n , in each of which a tapered sheath molding opening 5 is provided for forming a tapered sheath of a composite bushing. In this case, a diameter of the opening gradually becomes greater on a polygonal line from a small-diameter end toward a large-diameter end, so that the opening 5, i.e., the mold unit for molding the composite bushing tapered sheath having the segmented arrangement is commonly used for tapering from a 66kV composite bushing up to a 500kV composite porcelain tube. This arrangement, the unit 4 is constituted of four blocks 4a-4d from a small-diameter side up to a large-diameter side, and the unit 4 has a stepped profile.

24. 发明专利

JPH09237536A FRP TUBE FOR POLYMER PORCELAIN TUBE 失效
公开(公告)号：JPH09237536A
公开(公告)日：1997-09-09
申请号：JP4313796
申请日：1996-02-29
申请人： NGK INSULATORS LTD
发明人： NAKAYAMA TETSUYA , FUKAMI YUKITERU
IPC分类号： B32B5/00 , H01B17/00 , H01B17/26
摘要： PROBLEM TO BE SOLVED: To precisely wind roving layers and improve high moisture permeability by providing the first and second glass roving layers, winding the first roving layer at an angle against the central axis, and winding the second roving layer perpendicularly to the central axis in combination. SOLUTION: Multiple glass rovings impregnated with an epoxy resin and an amine or acid anhydride hardening agent-blended resin are concurrently wound on a mandrel via a mold releasing agent while suppressing the occurrence of voids in a clean room. The first glass roving layer 4 is wound at an angle against the central axis of an FRP tube 1, and the second glass roving layer 5 is wound perpendicularly to the central axis. Glass rovings are finely fed to be kept in contact with each other, and each glass roving is continuously wound. The impregnating resin layer of the glass rovings can be made thin, the passage where moisture infiltrates into the FRP tube 1 can be extended, the moisture permeability is improved, and the permeating moisture quantity can be reduced.

25. 发明专利

JPH09237534A POLYMER PORCELAIN TUBE 失效
公开(公告)号：JPH09237534A
公开(公告)日：1997-09-09
申请号：JP4117896
申请日：1996-02-28
申请人： NGK INSULATORS LTD
发明人： NAKAYAMA TETSUYA
IPC分类号： H01B17/00
摘要： PROBLEM TO BE SOLVED: To increase the width of support members and reduce the number of the support members by making the shade interval at a portion larger than at other portions, and providing a support section dedicated for the support members at this portion. SOLUTION: A polymer tube 1 is constituted of an FRP tube 2 and an envelope section 3 made of silicone rubber or the like, and the envelope section 3 is constituted of an envelope barrel 4 and shade sections 5. The shade interval at the portion of a support section 7 is set larger than the normal shade interval. The interval between the shade sections 5 is increased to form the support section 7, thus the surface leak distance of the polymer tube 1 is shortened, however the protruded quantity of the shade sections 5 at the support section 7 is made larger than the protruded quantity of other shade sections to resolve this problem. A support member 8 is kept in contact with the support section 7 to support the polymer tube 1. The support member 8 can be made thick, the contact area between the support member 8 and the support section 7 is increased, the stress concentration to the contact section can be reduced, and an excessive load can be prevented. The number of the support members 8 can be decreased in proportion to an increase of the contact area.

26. 发明专利

JPH09196996A DEVICE FOR TESTING CORONA DISCHARGE OF INSULATION CYLINDER AND TESTING METHOD USING THE DEVICE 失效
公开(公告)号：JPH09196996A
公开(公告)日：1997-07-31
申请号：JP914096
申请日：1996-01-23
申请人： NGK INSULATORS LTD
发明人： NAKAYAMA TETSUYA , FUKAMI YUKITERU , SOGA MASASHIGE
IPC分类号： G01R31/12 , G01R29/00 , H01B17/00
摘要： PROBLEM TO BE SOLVED: To provide a device for testing corona discharge of an insulation cylinder and a testing method by which the corona discharging state of an FRP cylinder for polymer porcelain busing can be tested simply. SOLUTION: This device comprises a first ring member 3 to which a voltage is applied and which is provided setably on the outer circumference of an insulation cylinder 2, a second ring member 4 for earthing which is provided setably on the outer circumference of the insulation cylinder 2, and a base 5 for fixing the members 3 and 4 integrally. The inner diameters of the members 3 and 4 are made equivalent to each other, and the sectional shapes of the members 3 and 4 that are cut from the center of the cylinder 2 in the radial direction are made square substantially. By using such a testing device 1, a voltage is applied to the member 3, and the cylinder 2 is moved vertically by a supporting member in this state, thereby giving an electric field to the lower part of the cylinder 2 so as to test the corona discharge state.

27. 发明专利

JP2564324B2 失效
公开(公告)号：JP2564324B2
公开(公告)日：1996-12-18
申请号：JP25577687
申请日：1987-10-09
申请人： NGK INSULATORS LTD
发明人： NAKAYAMA TETSUYA , ICHIOKA TATSUMI
IPC分类号： H01T4/14 , H01B17/46

28. 发明专利

JP2505443B2 失效
公开(公告)号：JP2505443B2
公开(公告)日：1996-06-12
申请号：JP3874287
申请日：1987-02-20
申请人： NGK INSULATORS LTD
发明人： NAKAYAMA TETSUYA , TAKAGI TOSHUKI
IPC分类号： H01B17/46 , H01B17/40 , H01B17/42 , H01T4/14

29. 发明专利

JPH07272821A LIGHTNING SURGE CURRENT SENSING/DISPLAYING DEVICE AND METHOD FOR INSTALLING DISPLAY UNIT 失效
公开(公告)号：JPH07272821A
公开(公告)日：1995-10-20
申请号：JP5950094
申请日：1994-03-29
申请人： NGK INSULATORS LTD
发明人： NAKAYAMA TETSUYA
IPC分类号： G01R19/15 , H01T1/12
摘要： PURPOSE:To permit additionally installing a new display unit simply without removing/mounting or replacing any display unit when all displays on it have finished their display operations. CONSTITUTION:A display unit 14 consisting of a plurality of displays 18 is installed on a support arm 2 of a steel tower. The displays 18 make displaying operations one after another in confomity to sensing signals given by a lightning surge current sensor through a cable 13 each time a lightning surge current intrudes. A power outlet is protrusively mounted on the display 18 situated at the termination side of the display unit 14. A plug 33 is installed protrusively on the display 16 at the beginning side of a new display unit 14A. When all displays 18 of the display unit 14 have finished their displaying operations, the new unit 14A is additionally mounted on the arm 2, adjoining to the unit 14. The new unit 14A is electrically connected with the unit 14 through the outlet 32 and plug 33 so that the display operation can be continued.

30. 发明专利

JPH07262844A FAILURE INDICATOR FOR LIGHTING PROTECTION INSULATOR AND LIGHTING PROTECTION INSULATOR EMPLOYING THE INDICATOR 失效
公开(公告)号：JPH07262844A
公开(公告)日：1995-10-13
申请号：JP5629194
申请日：1994-03-25
申请人： NGK INSULATORS LTD
发明人： NAKAYAMA TETSUYA
IPC分类号： G01R31/08 , H01B17/00 , H01B17/42
摘要： PURPOSE:To provide a failure indicator for a lighting protection insulator, which is simple in constitution, and can facilitate its manufacturing and installing works. CONSTITUTION:Each ring 11 is roughly identical in diameter to the barrel section 9 of a lighting protection insulator, is larger in width than the diameter of each pressure release hole 2, and is formed into a ring shape. In each ring 11, the surface opposite to each pressure release hole 2 is made to be a pressure bearing surface 11a. A part of each ring 11 is cut off, so that a clearance section is thereby formed therein. Color different from that for the outer surface of the lighting protection insulator is coated over each ring 11, so that an indicator 10 is thereby formed. The indicator 10 is fitted on the barrel section 9 of the lighting protection insulator so as to be fixed there with adhesives.

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