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1. 发明专利

JPS63108618A ARRESTING INSULATOR 失效
公开(公告)号：JPS63108618A
公开(公告)日：1988-05-13
申请号：JP25271286
申请日：1986-10-23
申请人： NGK INSULATORS LTD
发明人： MORIYA TSUTOMU
IPC分类号： H01B17/46 , H01B17/42 , H01T4/14

2. 发明专利

JPH09259667A POLYMER INSULATING TUBE AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH09259667A
公开(公告)日：1997-10-03
申请号：JP6103496
申请日：1996-03-18
申请人： NGK INSULATORS LTD
发明人： MORIYA TSUTOMU , NAKAYAMA TETSUYA
IPC分类号： H01B17/00 , H01B19/00
摘要： PROBLEM TO BE SOLVED: To provide a polymer insulating tube which prevents a progress of separation from an incomplete bonding part, eliminate accumulation of rainwater, improves insulation reliability in a connection part and improves insulation reliability for a long period, by providing a main bonding part formed by a bonding surface parallel to the center axis of the polymer insulating tube in the connection part. SOLUTION: A polymer insulating tube 1 is constituted by an FRP tube 2 and a silicon rubber-made casing part 3, it is constituted by a casing barrel 4 and an umbrella part 5 covering a peripheral part total unit of the FRP tube 2. A casing part 3-1 is formed on the FRP tube 2, successively, a casing part 3-2 connected by the casing part 3-1 and a connection part 6 is formed. The connection part 6 is formed by a main bonding part 7 formed by a bonding surface parallel to a center axis of the polymer insulating tube 1 and slopes 8-1, 8-2. In this way, even when a fine incomplete contact part is generated in a peripheral surface of the connection part 6, its progress can be prevented, insulation reliability of the connection part 6 is improved, the polymer insulating tube 1 improving insulation reliability for a long period is obtained.

3. 发明专利

JPH0221515A PORCELAIN INSULATOR TUBE FOR BUSHING 失效
公开(公告)号：JPH0221515A
公开(公告)日：1990-01-24
申请号：JP17029188
申请日：1988-07-07
申请人： NGK INSULATORS LTD
发明人： MORIYA TSUTOMU , MATSUURA YASUNORI , NAKAMURA TAKAO
IPC分类号： H01B17/26 , H01B17/14 , H01B17/36 , H01B17/60
摘要： PURPOSE:To suppress the scattering of fragments owing to the inner pressure when an insulator tube is broken, to prevent to strike peripheral apparatuses or to hurt a human being or an animal thereby, and to increase the safety, by specifying the tensile strength of an elastic insulator layer attached to the inner surface of a porcelain insulator tube. CONSTITUTION:At the outer peripheral surfaces of the upper and the lower ends of an insulator tube 1, flange metals 2 and 3 are contacted and fixed with a cement 4, and at the inner surface 1a of the insulator tube 1, an urethane rubber layer 5 is attached as an elastic insulator layer. When the urethane rubber layer 5 is attached, an adhesive such as an urethane type adhesive is spread at the inner surface 1a of the insulator tube 1, and an urethane rubber solution is poured in or sprayed over the inner surface 1a of the insulator tube 1 to adhere and form. And the tensile strength of the urethane rubber layer 5 at a normal temperature condition is made 150kgf/cm , and the thickness is set 2mm or more. As a result, the kinetic energy of scattering the fragments by the inner pressure when the insulator tube 1 is broken can be suppress and the safety is increased.

4. 发明专利

JPH09213150A JOINING METHOD AND STRUCTURE FOR SUPPORTING METAL PIECE OF COMPOSITE INSULATOR 失效
公开(公告)号：JPH09213150A
公开(公告)日：1997-08-15
申请号：JP1648496
申请日：1996-02-01
申请人： NGK INSULATORS LTD
发明人： MORIYA TSUTOMU , NAKAYAMA TETSUYA
IPC分类号： H01B17/00 , H01B17/38
摘要： PROBLEM TO BE SOLVED: To provide a joining structure and joining method for a supporting metal piece of a composite insulator which can enhance the flexural strength of the composite insulator while the configuration remains compact. SOLUTION: A supporting metal piece joining structure of a composite insulator 1 is such that a supporting metal piece 3 is joined with a core 2 with adhesives, wherein a mold releasing agent is previously applied by coating or spraying to the outer surface where the stress relieving part 4 of the core 2 is to be provided, or a non-sticky tape is wound round the external surface on which the stress relieving part 4 of the core 2 is to be provided, and then the supporting metal piece 3 is joined with the core 2 using adhesives. In a part at the end of the metal piece 3 and between it and the core 2, a stress relieving part 4 is formed where no adhesion of the metal piece 3 with core 2 is generated by the adhesives.

5. 发明专利

JPH07263114A LIGHTNING INSULATOR 失效
公开(公告)号：JPH07263114A
公开(公告)日：1995-10-13
申请号：JP5582294
申请日：1994-03-25
申请人： NGK INSULATORS LTD
发明人： MORIYA TSUTOMU , NAKAYAMA TETSUYA
IPC分类号： H01T1/16 , H01B17/42
摘要： PURPOSE:To dissolve the non-uniformity of potential distribution due to an asymmetrical electric field and provide a smaller size and higher reliability by forming a high resistance conductive layer on the inside face of a through-hole in which a ZnO element is stored. CONSTITUTION:A high.resistance conductive layer 8 formed on the inside face of a through-hole 2 formed in a shade 1 has the upper end connected to an upper electrode 4 and the lower end connected to a lower electrode 6. A resistance value for the layer 8 is limited not to carry 1MA or more therein when voltage equevalent to the varistor voltage of a ZnO element which is stored in the hole 2 is applied thereto. Material for the layer 8 is desirably tin oxide group conductive material in consideration of electric corrosion restraint, heat, heat escape phenomenon prevention and no variation of the resistance value in a manufacturing process. This is applied and baked to the inside face of the hole to be formed as the high resistance layer 8, so that the non-uniformity of potential distribution on the inside face of the hole 2 is improved and share voltage in a cavity between the inside face of the hole 2 and the outer periphery of the ZnO element is reduced. As a result, no local discharge occurs there, the larger size of an insulator mainbody to improve its insulating strength is avoided and reliability is improved.

6. 发明专利

JPH01130430A SUSPENDED INSULATOR 失效
公开(公告)号：JPH01130430A
公开(公告)日：1989-05-23
申请号：JP28808787
申请日：1987-11-13
申请人： NGK INSULATORS LTD
发明人： MORIYA TSUTOMU , NOZAKI HIROSHI , OKAMOTO MITSUHARU
IPC分类号： H01B17/02
摘要： PURPOSE:To reduce a current split in cement so as to prevent breakdown of an insulator itself by extending the distance from the lower outer peripheral angled part of a pin swelled part to the lower end of sand longer than the distance from said angled part to the lower end angled part of a fitting port. CONSTITUTION:Each part is dimensioned so that the relation of h>=T can be satisfied between the distance h from the lower outer peripheral angled part P of a pin swelled part 4a to sand 5 and the distance T from said angled part P to the lower end angled part Q of a fitting port 1d. Thus, when an overvoltage is applied by an electric shock, a large current of flashover flashovers through a pin fitting 4 into an insulator body 1 without splitting in cement 2. Hence, a large current is made difficult to split in the cement 2, so that the breakdown of the insulator body can be prevented.

7. 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.

8. 发明专利

JPH02158016A POOR INSULATOR DETECTOR 失效
公开(公告)号：JPH02158016A
公开(公告)日：1990-06-18
申请号：JP31078888
申请日：1988-12-08
申请人： NGK INSULATORS LTD
发明人： MORIYA TSUTOMU , OGAWA SHIGERU , TANAKA NAOKI
IPC分类号： H01B17/00
摘要： PURPOSE:To enable the detection of a poor insulator without climbing a steel tower by displaying a voltage generated between a charging side electrode plate connected to an insulator body and a floating electrode plate disposed thereto through a gap. CONSTITUTION:A mounting metal fitting 2 is welded to a mounting band 3 and installed to the gap metal fitting of an insulator body 1 of a series of insulators, and a charging indicator body 5 mounted to the metal fitting 2 is installed. The voltage generated between a charging side electrode plate 6 connected to the body 1 through the metal fitting 2 of the body 5 and a floating side electrode plate 8 facing thereto through a gap 7 is displayed on an indicator 11. Thus, a poor insulator can be detected without climbing a steel tower by observing the display telescopically and judging whether the displayed value is beyond a specified value or not.

9. 发明专利

JPH10223072A POLYMER BUSHING SUITABLE FOR POUR-TYPE MOLD FORMING 失效
公开(公告)号：JPH10223072A
公开(公告)日：1998-08-21
申请号：JP2027497
申请日：1997-02-03
申请人： NGK INSULATORS LTD
发明人： MORIYA TSUTOMU , NAKAYAMA TETSUYA
IPC分类号： H01B17/00 , H01B19/00
摘要： PROBLEM TO BE SOLVED: To provide a polymer bushing suitable for pour-type mold forming wherein mold cost for forming can be lowered and production manhour can be reduced. SOLUTION: In a polymer bushing 1 which comprized a core member and an outer cladding 5 that is formed on an outer circumference of the core member and composed of an insulation high-polymer material, and wherein the outer cladding 5 comprizes a sheath part covering the outer circumference of the core member and a plurality of shed parts which are provided in the longitudinal direction at appropriate intervals and extend from an outer circumference of the sheath part to the outside in the radial direction, and which is further made up by forming the outer cladding 5 by the method of pour-type mold forming of plural times while is made up of a straight part 3 and a taper part 2, a structure is made such that a length of the taper part 2 is shorter than a length of the straight part 3.

10. 发明专利

JPH10144166A COMPOSITE INSULATOR 失效
公开(公告)号：JPH10144166A
公开(公告)日：1998-05-29
申请号：JP30261196
申请日：1996-11-14
申请人： NGK INSULATORS LTD
发明人： MORIYA TSUTOMU , FUKAMI YUKITERU , KONDO KUNIAKI
IPC分类号： H01B17/00 , H01B17/32
摘要： PROBLEM TO BE SOLVED: To provide the most excellent dirt withstand voltage characteristic by providing a covering having such a shape as large diameter shed portions and small diameter shed portions are alternatively arranged, and setting the ratio of a surface leak distance to the axis direction unit length of the covering axis so as to stay in a range of specific values. SOLUTION: A composite insulator with double-size shed portions is composed of a core member and a covering which is provided on the outer peripheral face of the core member and is made of insulation high molecular material. The covering has such a shape as large diameter shed portions and small diameter shed portions are alternatively arranged via sheaths, and the ratio 1/p of a surface leak distance (l) to the axis direction unit length (p) of the covering is in a range of 4.3 to 5.0. In a composite insulator with double-size shed portions, a straight line distance combining the radial direction outside tip of a large diameter shed portion and the radial direction outside tip of a small diameter shed portion (distance between shed tips (c)) is 32 to 40mm. Since a l/p value can be set in a proper range, the use amount of covering rubber for obtaining the maximum dirt withstand voltage becomes proper.

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