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1. 发明专利

JP2000113735A POWER TRANSMISSION LINE 失效
公开(公告)号：JP2000113735A
公开(公告)日：2000-04-21
申请号：JP30312699
申请日：1999-10-25
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KONDO MAMORU , HATA RYOSUKE , TAKIGAWA YASUSHI , YODA JUN , HORIKAWA TAKAHIRO , ASHIBE YUICHI , SEKI MORIHIRO
IPC分类号： H01B7/14 , H01B9/06 , H01B13/00
摘要： PROBLEM TO BE SOLVED: To provide a power transmission line using a solid cable which suppresses a negative pressure to an insulating layer near a conductor when the load is shut off, and is capable of using at a high-temperature with a large capacity. SOLUTION: This power transmission line is provided with a submarine solid cable 40 laid on the bottom of the sea, and land cables 42 connected to both terminals of the submarine solid cable 40 through oil stop junction box 41. The submarine solid cable 40 is prepared with an insulating layer impregnated with insulating oil around a conductor, and an insulating tape including a polyolefin resin film is used in at least a part of the insulating layer. The insulating oil is an intermediate viscosity insulating oil having the viscosity at 60 deg.C ranging from 10-500 sct. The oil stopping junction box 41 is put on the beach, and the land cables 42 are connected with oil feeding reservoirs 43 feeding the land cables 42 with the insulating oil having the viscosity less than the intermediate viscosity.

2. 发明专利

JPH01243317A POLYETHYLENE EXTRUSION COVERING METHOD 失效
公开(公告)号：JPH01243317A
公开(公告)日：1989-09-28
申请号：JP7283288
申请日：1988-03-25
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： HORIKAWA TAKAHIRO
IPC分类号： B29C47/88 , H01B13/14
摘要： PURPOSE:To prevent the external appearance abnormality by cooling the covered part slowly immediately after the covering and subsequently cooling it by cooling water. CONSTITUTION:The polyethylene extruded by an extruder 1 and covering a cable or the like is firstly cooled slowly by the air as a cooling medium from air pipes 21-23. Then, it is cooled by the cooling water in a cooling water tank 4. By this two stage cooling, an external appearance abnormality, produced when the quick cooling is carried out by using the water directly, is prevented, said abnormality is such as the wrinkled surface produced by the positional variation of the surface contraction, occurring when the cooling is effected, due to the positional variation of overflowing water from the cooling water tank 4, or the crater-like unevenness of the surface produced by fast shrinking of the polyethylene at the surface portion of the cable where a splashed water drop, produced by overflown water at the water reservoir, adheres.

3. 发明专利

JPS60178233A OPERATION CONTROL METHOD FOR MOISTURE-PROOF APPARATUS IN PREPARATION OF SUPER HIGH VOLTAGE CABLE 失效
公开(公告)号：JPS60178233A
公开(公告)日：1985-09-12
申请号：JP3439884
申请日：1984-02-27
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： HORIKAWA TAKAHIRO
IPC分类号： F24F3/14 , H01B13/08
摘要： PURPOSE:To not to waste electric or heating energy needed for moisture-proofing, by performing each automatical operation control of a refrigerator and a moisture-proof apparatus according to relative humidity between open air dew point temperature and desired low humidity atmosphere. CONSTITUTION:The dew point temperature range of open air 6 is determined by a detection signal from a dew point thermometer 25 through an operation controller 30, four refrigerator units 1-4 are ON/OFF-controlled according to the range, and the moisture-proof capacity of the whole refrigerator units is heightened when open air dew point temperature is high and is lowered when the temperature is low. In the meantime, the calculated relative humidity between a storage shed 10 and each paper-covering chamber 11-13 is required by the operation controller 30 through the detection signal from the thermometers 21-24 and the dew point temperature 26-29, and the highest relative humidity range among the four sections is determined. The opening of a damper 18 for adjusting the regenerating hot air quantity of the moisture-proof apparatus 7 according to said range is controlled. Thus, the driving energy of the refrigerator and the regenerating energy of the moisture-proof apparatus are not wasted.

4. 发明专利

JP2001084848A DC O.F. POWER CABLE 失效
公开(公告)号：JP2001084848A
公开(公告)日：2001-03-30
申请号：JP26182899
申请日：1999-09-16
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： HIROTA HIROSHI , HATA RYOSUKE , KONDO MAMORU , TAKIGAWA YASUSHI , YODA JUN , HORIKAWA TAKAHIRO , SEKI MORIHIRO
IPC分类号： H01B7/14 , H01B9/00 , H01B9/06
摘要： PROBLEM TO BE SOLVED: To provide a DC O.F.(oil-filled) power cable capable of suppressing deterioration in its performance if a void is formed directly on a conductor or directly under a metallic sheath due to a change in temperature. SOLUTION: This DC O.F. power cable is equipped with an insulation layer 3 on the periphery of the conductor 1. Plastic laminate paper made by bonding low-ρ (resistivity) kraft paper to at least one side of a plastic film is used as the layer 3. The low-ρ kraft paper is obtained by giving ρ-lowering treatment to insulating kraft paper, and it has an insulation resistance not less than 10% and not more than 80% of that of kraft paper not yet given the treatment. An addition of dicyandiamide is mentioned as a method of the treatment. By lowering the insulation resistance of kraft paper by the treatment, the initiation of discharge in the void can be inhibited.

5. 发明专利

JPH11224546A SOLID CABLE, ITS MANUFACTURE AND ITS TRANSMISSION LINE 失效
公开(公告)号：JPH11224546A
公开(公告)日：1999-08-17
申请号：JP3817398
申请日：1998-02-03
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KONDO MAMORU , HATA RYOSUKE , TAKIGAWA YASUSHI , YODA JUN , HORIKAWA TAKAHIRO , ASHIBE YUICHI , SEKI MORIHIRO
IPC分类号： H01B3/22 , H01B3/28 , H01B3/44 , H01B7/14 , H01B7/29 , H01B9/06 , H01B13/00 , H02G15/24
摘要： PROBLEM TO BE SOLVED: To provide a solid cable usable at a higher voltage and at a higher temperature to perform a large capacity transmission of electrical energy by impregnating an insulating layer with a middle viscosity insulating oil having a viscosity within a specified range. SOLUTION: The middle viscosity insulating oil consists of an insulating oil having a viscosity at 60 of 10 cst or more and less than 500 cst. Particularly, the SP value (solubility index) of the insulating oil is preferably set within the range of ± 1.5 from the SP value of a polyolefin resin film used for the insulating layer. Particularly preferable examples of the insulating oil include dodecyl benzene. A tape containing the polyolefin resin film is preferably used for at least a part of the insulating layer. Particularly, it is preferred to apply a composite tape consisting of a polyolefin resin film and craft papers laminated on both sides thereof and an insulating tape consisting of only the polyolefin resin film to the insulating layer by alternately winding them. Further, a reinforcing layer is suitably formed on the circumference of a metal sheath provided on the circumference of the insulating layer.

6. 发明专利

JPS5914846B2 JPS5914846B2 - 失效
公开(公告)号：JPS5914846B2
公开(公告)日：1984-04-06
申请号：JP6514679
申请日：1979-05-25
申请人： Sumitomo Electric Industries
发明人： HORIKAWA TAKAHIRO , HIBINO YUTAKA , MARAI SEIICHI
IPC分类号： H01B7/17 , B05D7/20 , H01B13/00 , H01B13/22
CPC分类号： B05D7/20 , H01B13/0026

7. 发明专利

JPS5624710A ELECTRIC CABLE HAVING CONDUCTIVE COATING ON PERIPHERAL SURFACE OF CABLE CORROSION PREVENTIVE LAYER 失效
公开(公告)号：JPS5624710A
公开(公告)日：1981-03-09
申请号：JP9953479
申请日：1979-08-04
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON KOKUEN KOGYO KK
发明人： HORIKAWA TAKAHIRO , MARAI SEIICHI , DOI TEI
IPC分类号： H01B7/28 , H01B7/32 , H01B13/22

8. 发明专利

JP2001023449A PLASTIC LAMINATE PAPER AND OIL-IMPREGNATED SOLID POWER CABLE USING THEREOF 失效
公开(公告)号：JP2001023449A
公开(公告)日：2001-01-26
申请号：JP19951799
申请日：1999-07-13
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： YODA JUN , HATA RYOSUKE , KONDO MAMORU , HIROTA HIROSHI , TAKIGAWA YASUSHI , HORIKAWA TAKAHIRO , SEKI MORIHIRO
IPC分类号： B32B29/00 , H01B7/14 , H01B7/17 , H01B17/60
摘要： PROBLEM TO BE SOLVED: To provide an oil-impregnated solid power cable capable of suppressing a performance drop even if a void is formed right over the conductor and right under a metal sheath originating from a temperature change and to provide a plastic laminate paper optimum for an insulating layer of this type of cable. SOLUTION: A plastic laminate paper consists of a composite tape of such a structure that a low-ρ kraft paper is jointed at least with one surface of a plastic film. The low-ρ kraft paper is prepared by subjecting a kraft paper for electric insulation to a low-ρ generating process, and its dielectric resistance lies between 10-80% of that of the kraft paper before its being subjected to the low-ρ generating process. As for the low-ρ generating process, addition of dicyan-diamide can be mentioned. The plastic laminate paper is used at least in part of the insulating layer 3 of an oil-impregnated solid power cable.

9. 发明专利

JP2000340043A OIL IMPREGNATED SOLID POWER CABLE LINE 失效
公开(公告)号：JP2000340043A
公开(公告)日：2000-12-08
申请号：JP15056399
申请日：1999-05-28
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： YODA JUN , HATA RYOSUKE , KONDO MAMORU , HIROTA HIROSHI , TAKIGAWA YASUSHI , HORIKAWA TAKAHIRO , SEKI MORIHIRO
IPC分类号： H01B7/14 , H01B9/06 , H02G15/20
摘要： PROBLEM TO BE SOLVED: To suppress performance drop even if a void is formed directly over a conductor or directly under a metal shielding layer by temperature change by connecting a pressurized oil supply tank to both terminals or a beach connection part of a cable so that the inside of the cable is always kept is positive pressure in a cable section of relatively shallow water depth region where negative pressure is produced on the inside when a load is shut off, and supplying oil by applying pressure. SOLUTION: In a cable section 3 in a region where a cable is laid in relatively shallow water depth, a lead cover is not completely crushed because of low water pressure, and increase in inside hydraulic pressure is small. In this state, if a load is once shut off, oil corresponding to volume contraction caused by cooling of oil cannot be supplied, negative pressure is generated, and break of the cable caused by void discharge may be caused. Pressurized oil supply tanks 5A, 5B are arranged in both terminals 4A, 4B or a beach connection part of the cable, and oil is pressurized to keep hydraulic pressure not generating negative pressure in any case in the cable section 3 in the shallow water depth region, and positive pressure is kept on the inside of a cable insulator and start of void discharge is suppressed.

10. 发明专利

JP2000268652A MANUFACTURE OF SOLID POWER CABLE 失效
公开(公告)号：JP2000268652A
公开(公告)日：2000-09-29
申请号：JP7481299
申请日：1999-03-19
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KONDO MAMORU , HATA RYOSUKE , HIROTA HIROSHI , TAKIGAWA YASUSHI , YODA JUN , HORIKAWA TAKAHIRO , SEKI MORIHIRO
IPC分类号： H01B9/06 , H01B13/00 , H01B13/30
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing method of a solid power cable less liable to form a void directly on a conductor or directly beneath a metallic sheath due to a temperature change. SOLUTION: This manufacturing method of a solid power cable has a process for making up a cable provided with an insulating layer by winding an insulating tape around the outer circumference of a conductor, a process for introducing the cable into a tank and heating/drying the insulating layer, and a process for impregnating an insulating oil into the insulating layer. The insulating oil is heated to a temperature higher than the heating/drying temperature before it is introduced into the tank and impregnated into the insulating layer. Because the insulating oil is introduced into the tank after it is lowered in viscosity by being heated, the insulating oil can permeate into the insulating layer rapidly and uniformly.

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