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1. 发明授权

US5713415A Low flux leakage cables and cable terminations for A.C. electrical heating of oil deposits 失效
标题翻译：油浸电弧加热的低通量泄漏电缆和电缆终端
公开(公告)号：US5713415A
公开(公告)日：1998-02-03
申请号：US685512
申请日：1996-07-24
申请人： Jack E. Bridges
发明人： Jack E. Bridges
IPC分类号： E21B36/04 , H01B7/04 , H01B7/26 , E21B43/24
CPC分类号： E21B43/2401 , E21B36/04 , H01B7/046 , H01B7/26
摘要： Low-flux-leakage cables and cable terminations for an A.C. electrical heating system that heats a fluid reservoir around a mineral fluid well, usually an oil well; the system utilizes A.C. electrical heating power in a range of 25 to 1000 Hz. The well has a borehole extending down through overburden formations and through a subterranean fluid reservoir; the well includes an electrically conductive upper casing in the overburden, an electrically conductive heating electrode located in the reservoir, and an electrically insulating casing between the upper casing and the heating electrode. The cable extends down through the upper casing and is connected to the heating electrode to supply electrical power to the electrode. The power cable has two or three electrical conductors which are electrically isolated from each other, enclosed within a steel sheath. The conductors are electrically terminated within a zone that immediately surrounds the heating electrode and adjacent formations; there is a net vertical current of approximately zero in the conductors so that eddy current and skin effect losses in the steel sheath are minimized. For a two-conductor cable, one conductor is connected to the well casing and the other is connected to the electrode.
摘要翻译：用于加热矿物流体周围的流体储存器（通常为油井）的交流电加热系统的低通量泄漏电缆和电缆终端; 该系统利用在25至1000Hz范围内的交流电加热功率。井具有向下延伸穿过覆盖层地层并通过地下储层的井眼; 井包括覆盖层中的导电上壳体，位于储液器中的导电加热电极，以及在上壳体和加热电极之间的电绝缘壳体。电缆向下延伸通过上壳体并连接到加热电极以向电极提供电力。电力电缆具有两个或三个电导体，它们彼此电隔离，封闭在钢护套内。导体在紧靠着加热电极和相邻地层的区域内电终止; 在导体中存在约为零的净垂直电流，使得钢护套中的涡流和皮肤效应损失最小化。对于双芯电缆，一个导体连接到井套管，另一个连接到电极。

2. 发明授权

US4365109A Coaxial cable design 失效
标题翻译：同轴电缆设计
公开(公告)号：US4365109A
公开(公告)日：1982-12-21
申请号：US318653
申请日：1981-11-05
申请人： James P. O'Loughlin
发明人： James P. O'Loughlin
IPC分类号： H01B7/26 , H01B11/12 , H01B11/18
CPC分类号： H01B11/12 , H01B11/183 , H01B7/26
摘要： It has been discovered that the transient voltage which develops on the outer sheath of a coaxial cable under pulse voltage excitation is a result of the inequality between the self inductance of the sheath and the mutual inductance between the sheath and the center conductor. The self inductance of the sheath is always less than the mutual inductance by a small amount because of the finite thickness of the sheath. By manipulating the design of the outer sheath, an equality between the sheath self inductance and the sheath to inner conductor mutual inductance can be achieved which results in a cancellation of the transient voltage on the sheath when the cable is pulsed.
摘要翻译：已经发现在脉冲电压激励下在同轴电缆的外护套上产生的瞬态电压是由于护套的自感和护套与中心导体之间的互感之间的不等式导致的。由于护套的有限厚度，护套的自感总是小于互感量。通过操纵外护套的设计，可以实现护套自感和护套与内部导体互感之间的相等，这导致当电缆被脉冲时护套上的瞬态电压的消除。

3. 发明授权

US3714769A Method and apparatus for continuously winding tape onto elongated body 失效
标题翻译：用于连续卷绕在延伸体上的方法和装置
公开(公告)号：US3714769A
公开(公告)日：1973-02-06
申请号：US3714769D
申请日：1971-04-23
申请人： FURUKAWA ELECTRIC CO LTD
发明人： TSUCHIYA S , YABUKI M , TAKADA Y
IPC分类号： B65H18/10 , B01D47/02 , B01D47/10 , B65H81/08 , D02G3/36 , H01B13/08 , H01B7/26
CPC分类号： B65H81/08 , B01D47/10
摘要： A TAPE IS FED FROM A TAPE PAD INSERTED IN A TAPE PAD HOLDER THROUGH CONCENTRICALLY ARRANGED OUTER AND INNER GUIDE DISCS ONTO AN ELONGATED BODY. NORMALLY, ALL OF THE TAPE PAD HOLDER AND OUTER AND INNER GUIDE DISCS ARE ROTATED AT THE SAME SPEED TO WIND THE TAPE ONTO THE ELONGATED BODY. IN CASE OF REPLACING THE TAPE PAD WITH A NEW ONE, A RELATIVE SPEED BETWEEN THE OUTER AND INNER GUIDE DISCS IS CHANGED TO ACCUMULATE THE TAPE ONTO THE OUTER AND INNER GUIDE DISCS AND THEN THE TAPE PAD HOLDER ONLY IS STOPPED TO REPLACE THE TAPE PAD WITH A NEW ONE AND CONNECT THE FRONT END OF THE TAPE FROM THE NEW PAD TO THE REAR END OF THE TAPE ACCUMULATED AROUND THE OUTER GUIDE DISC WHILE CONTINUOUSLY ROTATING THE OUTER AND INNER GUIDE DISCS AND DELIVERING THE ACCUMULATED TAPE ONTO THE ELONGATED BODY.

4. 发明授权

US1895982A Device for reducing the current in the lead sheaths of cables 失效
标题翻译：用于减少电缆引线护套电流的装置
公开(公告)号：US1895982A
公开(公告)日：1933-01-31
申请号：US42846930
申请日：1930-02-14
申请人： PIRELLI
发明人： LUIGI EMANUELI
IPC分类号： H01B7/26
CPC分类号： H01B7/26

5. 发明授权

US1812949A Transformer 失效
公开(公告)号：US1812949A
公开(公告)日：1931-07-07
申请号：US45688830
申请日：1930-05-29
申请人： HERMAN HALPERIN , MILLER KENNETH W
发明人： HERMAN HALPERIN , MILLER KENNETH W
IPC分类号： H01B7/26
CPC分类号： H01B7/26 , Y10T307/273

6. 发明授权

US1812630A Cable armoring 失效
标题翻译：电缆铠装
公开(公告)号：US1812630A
公开(公告)日：1931-06-30
申请号：US34331229
申请日：1929-02-28
申请人： BELL TELEPHONE LABOR INC
发明人： GILBERT JOHN J
IPC分类号： H01B7/26
CPC分类号： H01B7/26

7. 发明授权

US1809591A Sheath bonding and method 失效
标题翻译：护套粘合和方法
公开(公告)号：US1809591A
公开(公告)日：1931-06-09
申请号：US23663427
申请日：1927-11-30
申请人： HERMAN HALPERIN , MILLER KENNETH W
发明人： HERMAN HALPERIN , MILLER KENNETH W
IPC分类号： H01B7/26
CPC分类号： H01B7/26

8. 发明授权

US1603849A Power system 失效
公开(公告)号：US1603849A
公开(公告)日：1926-10-19
申请号：US68994124
申请日：1924-02-01
申请人： GEN ELECTRIC
发明人： HORNBY BENJAMIN S
IPC分类号： H01B7/26
CPC分类号： H01B7/26

9. 发明授权

US1512443A Electrical cable installation 失效
标题翻译：电缆安装
公开(公告)号：US1512443A
公开(公告)日：1924-10-21
申请号：US63982523
申请日：1923-05-18
申请人： STANDARD UNDERGROUND CABLE CO CANADA
发明人： ATKINSON RALPH W
IPC分类号： H01B7/26
CPC分类号： H01B7/26

10. 发明授权

US11410794B2 Armoured cable for transporting alternate current with permanently magnetised armour wires 有权
公开(公告)号：US11410794B2
公开(公告)日：2022-08-09
申请号：US17056968
申请日：2018-05-24
申请人： Prysmian S.p.A.
发明人： Paolo Maioli , Marco Ruzzier , Monica Lucarelli
IPC分类号： H01B7/26 , H01B7/14
摘要： The present disclosure relates to an armoured AC cable comprising at least one core comprising an electric conductor, and an armour surrounding the at least one core and comprising ferromagnetic wires, wherein the ferromagnetic wires are permanently magnetized with a remanent magnetic field which is uniform or variable along the cable length L. The present disclosure also relates to a process for producing an armoured AC cable, a method for improving the performances of an armoured AC cable, and a method for reducing losses in an armoured AC cable.

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