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41. 发明专利

JPS57157163A TESTING METHOD FOR POWER CABLE 失效
公开(公告)号：JPS57157163A
公开(公告)日：1982-09-28
申请号：JP4265181
申请日：1981-03-24
申请人： HITACHI CABLE
发明人： ANDOU YORIO , KANAMARU KIMIHARU
IPC分类号： G01R31/12
摘要： PURPOSE:To correctly evaluate breakdown due to an electric limit by checking rise in the temperature and thermal breakdown due to the loss of a dielectric with cooling of a UHV cable at a test for withstand voltage or breakdown thereof. CONSTITUTION:When a single-core 2,000mm. OF cable is used for UHV 1,100kV with a low loss synthetic paper employed for an insulator to raise the power transmission efficiency, a thermal stability is attained at a Tc=38 deg.C in the normaloperation. But when subjected to a withstand voltage test at a voltage to ground of 1,270kV, Tc=164 deg.C is given and a thermal breakdown occurs with a sharp increase in the dielectric loss. To preent this, oil of an OF cable hydraulic tank 11 is cooled through a heat exchanger 10 and circulated through a conductor 2 in the route of a refrigerant inlet 7, terminal bushing 5, conductor oil channel 1, a terminal bushing 5 and a refrigerant outlet 8 to cool it 2. This checks the cable from reaching the het range of 150-200 deg.C allowing a thermal breakdown thereby enabling a withstand voltage test to be conducted under a thermally stable condition.

42. 发明专利

JPS57116510A METHOD OF LAYING CABLE 失效
公开(公告)号：JPS57116510A
公开(公告)日：1982-07-20
申请号：JP111781
申请日：1981-01-09
申请人： TOKYO ELECTRIC POWER CO , HITACHI CABLE
发明人： TAGUCHI AKIO , MINAFUJI JIYUNICHI , SUZUKI NOBUTAKA , TOMITA HIROYASU , ANDOU YORIO
IPC分类号： H02G1/08

43. 发明专利

JPS56139020A METHOD OF PRODUCING FLEXIBLE CONDUIT GAS TRANSMISSION LINE 失效
公开(公告)号：JPS56139020A
公开(公告)日：1981-10-30
申请号：JP4145280
申请日：1980-03-31
申请人： HITACHI CABLE
发明人： ANDOU YORIO , SATOU HIDEO , OOHASHI SEISHIROU
IPC分类号： H01B9/06 , H01B13/26 , H02G5/06

44. 发明专利

JPS56101329A POWER CABLE LINE 失效
公开(公告)号：JPS56101329A
公开(公告)日：1981-08-13
申请号：JP269980
申请日：1980-01-12
申请人： HITACHI CABLE
发明人： SUGIYAMA KOUICHI , ANDOU YORIO , SHIGA SHIYOUICHI , TSUTSUI TERUAKI , YAMAZAKI KAORU
IPC分类号： H02G15/00

45. 发明专利

JPS56101328A POWER CABLE LINE 失效
公开(公告)号：JPS56101328A
公开(公告)日：1981-08-13
申请号：JP237480
申请日：1980-01-11
申请人： HITACHI CABLE
发明人： SUGIYAMA KOUICHI , ANDOU YORIO , SHIGA SHIYOUICHI , TSUTSUI TERUAKI , YAMAZAKI KAORU
IPC分类号： H02G15/00

46. 发明专利

JPS5684914A METHOD AND DEVICE FOR CONNECTING PIPES 失效
公开(公告)号：JPS5684914A
公开(公告)日：1981-07-10
申请号：JP16188079
申请日：1979-12-13
申请人： HITACHI CABLE
发明人： ANDOU YORIO , FUKAZAWA MASAKATA , TOMITA HIROYASU
IPC分类号： B29C65/48 , B29C55/00 , B29C65/00 , B29C65/78
摘要： PURPOSE:To prevent a bonding agent from running-off to the wall interior of the pipes and guarantee the smoothness of the wall interior surface by a method wherein a body expandable by a fluid is expanded and abutted to an internal surface of the bonded section, thereafter, the expanded body is contracted and withdrawn together with an operating tube after the bonding agent is set when the bonding agent is coated and the pipes are abutted to each other. CONSTITUTION:In case the pipes 1, 2 are connected by a bonding agent, fluid is transferred from a hydraulic pressure controlling means 4 to the expandable body 6 through the operating tube 5 to expand the expandable body 6 into the same size as the inner diameter of the connecting section of the pipes 1, 2 substantially. Thereafter, the expandable body 6 is pressurized by the control means 4 through flexible operating tube 5 to contact it with the connecting section of the pipes 1, 2 closely. After the bonding agent coated between the pipes 1, 2 is hardened, the expanded body is contracted and withdrawn from the end of the pipe by pulling the flexible operating tube. Thus, the bonding agent will never run off into the inner side of the pipes because the pipes and the expanded body are contacted closely and the connecting section of the pipes may be joined smoothly.

47. 发明专利

JPS55121162A MEASURING METHOD OF IRON LOSS AND SO ON 失效
公开(公告)号：JPS55121162A
公开(公告)日：1980-09-18
申请号：JP2913079
申请日：1979-03-13
申请人： HITACHI CABLE
发明人： SUGIYAMA KOUICHI , YAMAZAKI KAORU , SHIGA SHIYOUICHI , ANDOU YORIO
IPC分类号： G01R31/00 , G01R31/02 , G01R33/12
摘要： PURPOSE:To make it possible to obtain iron loss of adjacent steel, etc., with a high precision on the basis of a voltage induced by the operation below, by laying a search coil so that only a required part out of the magnetic flux interlinked with a power supply circuit can be interlinked. CONSTITUTION:Conductor 1 is laid in parallel, and one end of it is short-circuited, and transformer 2 for power supply is inserted to the other end. Next, voltage lead wire (insulating line) 3 is spirally wound around the outside circumference of conductor 1 at a fixed pitch so that the magnetic flux of only a proper part out of the magnetic flux interlinked with a power supply circuit can be detected. Then, mutual reactance 5 is inserted to the power supply circuit and connected in series to voltage lead wire 3 through variable resistor 7, and the output of it is inputted to power meter 8. The supply current is obtained by current transformer 6 and power meter 8. Iron loss, etc., can be obtained by the supply current and the voltage generated at the opened end of voltage lead wire 3.

48. 发明专利

JPS54149694A Seal testing method 失效
标题翻译：密封测试方法
公开(公告)号：JPS54149694A
公开(公告)日：1979-11-24
申请号：JP5784378
申请日：1978-05-16
申请人： Hitachi Cable Ltd
发明人： FUKAZAWA MASAKATA , SUGIYAMA KOUICHI , ANDOU YORIO , KANAMARU KIMIHARU , SATOU HIDEO , MINAFUJI JIYUNICHI
IPC分类号： G01M3/28 , G01M3/04 , G01M3/22 , H01B13/24
摘要： PURPOSE: To continuously accomplish the seal tests in a manner to monitor the exhaust gases at all times by scavenging the extruded or welded portion of a pipe so that He gases are continuously blown onto the outer side of the pipe immediately after the extrusion or the welding operation while guiding the exhuast gases into an He leak detector.
CONSTITUTION: A cable core 1 is guided through a sealed pipe 2 under an evacuated condition into an aluminum sheath extruder and is coated with the sheath of aluminum in the manner as shown in arrow. Immediately after this coating, He gases are blown onto the Al sheath. After cooled down with cooling water, the sheath 8 is currugated by a currugator 9 thereby to produce a corrugated sheath 10. An evacuating pump 11 is arranged immediately in front of rhe extruder 3, and an He detector 13 is arranged through an oil diffusion pump 12. The leading end of the cable having the sheath is closed so that the pipe 2 and the sheath 8 are evacuated by the pump 11. At this time, the inside of the He detecting pipe 13 is evacuated by means of the pump 12, and the He gases are sucked into the sheath 8, if there is any leak in the sheath 8, so that the leak can be detected by the pipe 13.
COPYRIGHT: (C)1979,JPO&Japio
摘要翻译：目的：通过清理管道的挤出或焊接部分，始终通过清除排气的方式不间断地进行密封试验，使得He气体在挤出或焊接后立即连续地吹到管的外侧同时将排出气体引导到He泄漏检测器中。构成：电缆芯1在真空条件下被引导通过密封管2到铝鞘挤出机中，并以如箭头所示的方式涂覆有铝护套。在这种涂层之后，He气体被吹到Al鞘上。用冷却水冷却后，护套8由卷曲器9进行波纹化，从而制成波纹状护套10.紧急挤压机3的前方配置有排气泵11，通过油扩散泵具有护套的电缆的前端被封闭，使得管子2和护套8被泵11抽空。此时，借助于泵12将He检测管13的内部抽真空，并且如果护套8中存在任何泄漏，则He气体被吸入护套8中，从而可以通过管13检测泄漏。

49. 发明专利

JPS5498981A OIL SUPPLY TANK 失效
公开(公告)号：JPS5498981A
公开(公告)日：1979-08-04
申请号：JP553778
申请日：1978-01-20
申请人： HITACHI CABLE
发明人： MINAFUJI JIYUNICHI , SATOU HIDEO , ANDOU YORIO , YAMAMOTO KATSUHIKO , IDE SHIGEO
IPC分类号： H02G15/26
摘要： PURPOSE:To provide a durable tank without relying on a transparent liquid level gauge by interconnecting a liquid reservoir and a liquid head pipe by a flexible tubing with liquid head detector which detects liquid head by a pressure thereof. CONSTITUTION:A bellows type cell 2 which flexes to change its inner volume is installed in a tank 1 with an oil and a gas being filled in the inside and outside of said cell 2 respectively, a liquid reservoir 4 is installed on the top of said cell 2 to move up and down according to the volume variation of the cell 2, a liquid head pipe 3 made of rigid metal is installed at the outside of the tank 1 and is interconnected by a flexible tubing 5 with the liquid reservoir 4 so as to allow flow of liquid 8 therein, a liquid head detector 9 is provided at the lower end of the liquid head pipe 3 to detect the liquid head by a pressure due to the height of the liquid head.

50. 发明专利

JPS5447693A TEMPERATURE MEASURING METHOD 失效
公开(公告)号：JPS5447693A
公开(公告)日：1979-04-14
申请号：JP11410277
申请日：1977-09-22
申请人： HITACHI CABLE
发明人： ANDOU YORIO , SUGIYAMA KOUICHI , KANAMARU KIMIHARU
IPC分类号： G01K7/02 , G01K7/04
摘要： PURPOSE:To make possible the measurement of multiple points by laying at least two kinds of conductors constituting a thermocouple in parallel without letting them contact with each other and moving a contactor shorting between these. CONSTITUTION:Two kinds of different conductors 1, 2 constituting a thermocouple are layed parallel without causing their mutual direct contact and an ammeter 8 for temperature detection is provided at one end. A contactor 3 which electrically shorts the conductors 1, 2 is provided, so that the temperature in multiple positions may be measured along the longitudinal direction of the conductors 1, 2 by the movement of said contactor 3. Hence, there is no need for moving and turning the thermocouple to respective positions or laying plural thermocouples in respective positions at the time of measuring the temperatures of plural positions and temperature measurement may be performed economically and conveniently.

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