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1. 发明专利

JPH08323471A AUTOMATIC CIRCUMFERENTIAL WELDING EQUIPMENT 失效
公开(公告)号：JPH08323471A
公开(公告)日：1996-12-10
申请号：JP15564195
申请日：1995-05-31
申请人： JAPAN STEEL & TUBE CONSTR
发明人： TANE AKIRA , KANAYAMA KIYOSHI , MURAKAMI TADANOBU , SATO YOSHIKAZU
IPC分类号： B23K37/02 , B23K9/028 , B23K37/053
摘要： PURPOSE: To improve execution efficiency in laying a pipe etc., by reducing the auxiliary working time and the welding time. CONSTITUTION: With a notch of the holder 7 adjusted to the notch provided on the upper end of a frame body 3, a pipe 10b to be welded is inserted from above the frame body 3. The frame body 3 and the pipe 10b are fixed by clamp cylinders 4. With the holder 7 rotated 180 degrees each time along the frame body 3, a weld joint 19 is divided left and right centering on the vertical direction by two sets of welding equipment 8a, 8b installed oppositely facing at an angle of 180 degrees apart; and then, downward welding or upward welding is performed using the two sets of welding equipment 8a, 8b alternately.

2. 发明专利

JPH0526769A MEASURING SYSTEM FOR WELDED PART OF OPTICAL FIBER 失效
公开(公告)号：JPH0526769A
公开(公告)日：1993-02-02
申请号：JP20371191
申请日：1991-07-19
申请人： JAPAN STEEL & TUBE CONSTR
发明人： TANE AKIRA
IPC分类号： G01M11/00 , G02B6/00 , G02B6/255 , G08C25/00
摘要： PURPOSE:To obtain a welding result recognized by a worker on the spot even when the welding spot is apart from a light pulse tester when optical fibers for laying are welded at the middle of the way. CONSTITUTION:A worker performs the welding of optical fibers 26, 26' and transmits an optical fiber number 46 to a light pulse tester 1 by a connection change-over controller 7 through an optical fiber 44. A plug selection part 3 is rotated by the command from the light pulse tester and optical fibers CA1, 46 are connected. Thereafter, the light pulse tester 1 measures the quality of the welded part of the optical fibers and transmits the measured result to a personal computer 8 to display the same on a CRT 8a.

3. 发明专利

JPS62250324A OPTICAL FIBER SENSOR FOR DETECTING LEAKAGE 失效
公开(公告)号：JPS62250324A
公开(公告)日：1987-10-31
申请号：JP9222486
申请日：1986-04-23
申请人： JAPAN STEEL & TUBE CONSTR , ONO YUTAKA
发明人： TANE AKIRA , KOSUGE TAKU , ONO YUTAKA , YOSHIKAWA HIROSHI
IPC分类号： G02B6/02 , G01M3/04 , G01M3/38
摘要： PURPOSE:To detect a leakage when a liquid having a high refractive index such as oil is adhered without lowering a detection sensitivity, by forming a concentric cylindrical high refractive index part, of which the refractive index is made higher than that of a first low refractive index part, to the outer periphery of the first low refractive index part. CONSTITUTION:In this optical fiber sensor for detecting a leakage, a leakage detecting optical sensor part 14 is continuously formed to an optical fiber over the entire length thereof and, when a liquid having a refractive index higher than that of a concentric cylindrical high refractive index part 12, for example, leaked oil is adhered to the outer peripheral surface of the concentric cylindrical high refractive index part 12, light of a propagation mode reflected at a certain angle to have to propagate when there is no oil at the leaked oil adhered part of the high refractive index part 12 is converted to a leakage mode to leak to the outside. Therefore, if back scattering light due to said leaked light is measured using a light pulse tester, leak generating time and position can be detected. Further, because this optical fiber sensor is constituted so as to take in the light of a high order mode coming to the leakage mode, the quantity of light bringing about the leakage mode becomes much and leakage detection sensitivity is enhanced as compared with a conventional one.

4. 发明专利

JPS62115349A METHOD AND DEVICE FOR ABNORMALITY DETECTION BY OPTICAL FIBER 失效
公开(公告)号：JPS62115349A
公开(公告)日：1987-05-27
申请号：JP25379485
申请日：1985-11-14
申请人： JAPAN STEEL & TUBE CONSTR , ONO YUTAKA
发明人： TANE AKIRA , ONO YUTAKA , KOSUGE TAKU
IPC分类号： G01N21/84 , G01B11/16 , G01K11/12 , G01N21/88 , G02B6/00 , G08B17/00
摘要： PURPOSE:To detect a position where abnormality occurs automatically and accurately by light receiving the return light or transmitted light of continuous light sent out with low output to an optical fiber and judging abnormality, and then light receiving the return light of light pulses sent out thereafter. CONSTITUTION:The continuous light with constant output is sent out of a light emitting body 51 to the optical fiber 2 which has sensors 3 made of shape memory allow at a specific part and its return or transmitted light is received and converted 55 photoelectrically into the light receiving intensity, which is compared with reference light receiving intensity stored in a memory 75. If the abnormality is judged, an abnormality detection signal which is the output of a comparative decision circuit 77 is sent to the 1st and the 2nd switching means 79 and 81, which are switched automatically to the sides of a pulse oscillator 52 and the 1st logarithmic A/D converter 56. Then, the return light of light pulses transmitted from the light emitting body 51 to the optical fiber 2 is inputted to a photoelectric transducer 55 through a directional coupler 53 and A/D-converted 56. Then, light receiving data stored in a buffer memory 59 is processed by an abnormal position detecting circuit 60 to detect the position where the abnormality occurs automatically and accurately.

5. 发明专利

JPH08323470A AUTOMATIC CIRCUMFERENTIAL WELDING METHOD 失效
公开(公告)号：JPH08323470A
公开(公告)日：1996-12-10
申请号：JP15879195
申请日：1995-06-02
申请人： JAPAN STEEL & TUBE CONSTR
发明人： SATO YOSHIKAZU , MURAKAMI TADANOBU , KANAYAMA KIYOSHI , TANE AKIRA
IPC分类号： B23K9/00 , B23K9/028 , B23K37/02 , B23K37/053
摘要： PURPOSE: To achieve the efficiency circumferential welding by reducing both the auxiliary working time and the welding time. CONSTITUTION: Two sets of respective pairs of semi-circular rails 2a, 2b are respectively arranged on both sides in the vicinity of a circumferential joint part 8 of a tube 1 to be joined with their positions shifted by 180 deg.. A traction wire 4 is pulled by a pulling clamp 5 to tract both end parts of the respective rails 2a, 2b, and the rails 2a, 2b are fixed along the tube 1. Welding equipment 10a, 10b loaded on respective traveling devices 9 are arranged on the rails 2a, 2b respectively, and the welding equipments 10a, 10b are respectively moved in the directions opposite to each other from the upper end part of the circumferential joint part 8 to perform the downward welding of the circumferential joint part 8.

6. 发明专利

JPH05115972A COMBINED OSCILLATION WELDING METHOD 失效
公开(公告)号：JPH05115972A
公开(公告)日：1993-05-14
申请号：JP30374891
申请日：1991-10-24
申请人： JAPAN STEEL & TUBE CONSTR
发明人： TANE AKIRA , KANAYAMA KIYOSHI , MURAKAMI TADANOBU , HASEO OSAMU
IPC分类号： B23K9/12 , B23K9/022 , B23K9/127
摘要： PURPOSE:To stably obtain a flat bead even with the overhead and upward position. CONSTITUTION:Respective oscillations 22, 24 and 26 of combined oscillations having the oscillation centers, respectively in the vicinity of the center 21 and on both sides 23 and 25 on the left and right of a groove 1 are continuously repeated in order and a torch is moved. When this torch is moved, the oscillation width, etc., on the center of each oscillation are made changeable according to the groove and bead shape for every first layer, intermediate layer and final layer and the flat bead is formed.

7. 发明专利

JPH0526768A MEASURING AND TRANSMITTING METHOD FOR FUSING RESULT 失效
公开(公告)号：JPH0526768A
公开(公告)日：1993-02-02
申请号：JP20371091
申请日：1991-07-19
申请人： JAPAN STEEL & TUBE CONSTR
发明人： TANE AKIRA
IPC分类号： G01M11/00 , G01M11/02 , G02B6/00 , G02B6/255 , G08C25/00
摘要： PURPOSE:To obtain a fusing result recognized by a worker on the spot even when the fusing spot is apart from a light pulse tester when optical fibers for laying are fused at the middle of the way. CONSTITUTION:A worker transmits a light pulse tester operating command signal to a light pulse tester 1 from a personal computer 4 through an optical fiber cable 8. The light pulse tester 1 is connected to an optical fiber 9 not only to store the fusing result of fusing optical fibers 9, 9' but also to output the same to an optical fiber 8 as an image signal through an optical extender 2 and the image signal is inputted to the personal computer 4 through the optical extender 3 to be displayed on a CRT 4a.

8. 发明专利

JPS6344609A OPTICAL FIBER INCIDENCE DEVICE 失效
公开(公告)号：JPS6344609A
公开(公告)日：1988-02-25
申请号：JP18859986
申请日：1986-08-13
申请人： JAPAN STEEL & TUBE CONSTR , ONO YUTAKA
发明人： TANE AKIRA , KOSUGE TAKU , ONO YUTAKA
IPC分类号： G02B6/00 , G02B6/42
摘要： PURPOSE:To improve oil leak detection sensitivity by providing a rotary fine adjusting table and a position fine adjusting table and making light which has an optional propagation angle incident on an optical fiber. CONSTITUTION:An optical fiber sensor 20 is set at a proper position by adjusting the front-rear setters 15, up-down setter 16, and right-left setter 17 which constitute the position fine adjusting table. The center of the core part 1 of an end surface 6 of the optical fiber sensor 20 is aligned with the center of rotation of a turntable 11a by said setting and a parallel light beam 19 emitted by a laser unit 13 set at a proper rotational position by the turntable 11a is incident on the end surface 6. Consequently, the light which has a proper propagation angle is incident on the optical fiber sensor 20 and the sensitivity of oil detection is improved.

9. 发明专利

JPS638527A OIL LEAKAGE DETECTING SENSOR 失效
公开(公告)号：JPS638527A
公开(公告)日：1988-01-14
申请号：JP15306686
申请日：1986-06-30
申请人： JAPAN STEEL & TUBE CONSTR
发明人： TANE AKIRA , KOSUGE TAKU
IPC分类号： G02B6/00 , G01F23/292 , G01M3/02 , G01M3/04 , G01M3/16 , G01M3/38 , G02B6/02 , G02B6/44
摘要： PURPOSE:To surely detect an oil leakage by detecting it by an electric signal in a concentric cable or light in an optical fiber. CONSTITUTION:A large groove 7 and a small groove 8 are formed in a longitudinal direction in a tension member 6. A concentric cable composed of a core wire 1, a shielding wire 2 and a porous dielectric is accommodated in the large groove 7 and an optical fiber 5 is accommodated in the small groove 8. The concentric cable and the optical fiber 5 are used as oil leakage detecting means. Even when either one of the detecting means fails, an oil leakage can be detected by the other of the detecting means, so that the reliability of leakage detection can be improved.

10. 发明专利

JPH08206827A SIDEWAY WELDING METHOD 失效
公开(公告)号：JPH08206827A
公开(公告)日：1996-08-13
申请号：JP3938195
申请日：1995-02-06
申请人： JAPAN STEEL & TUBE CONSTR
发明人： SATO YOSHIKAZU , MURAKAMI TADANOBU , KANAYAMA KIYOSHI , TANE AKIRA
IPC分类号： B23K33/00 , B23K9/00 , B23K9/02 , B23K9/12 , B23K37/06
摘要： PURPOSE: To shorten a positioning time and a welding time of a member to be welded in a horizontal position welding and to reduce a welding defect. CONSTITUTION: A bevel in the horizontal position welding is made to be 35-55 deg. angle of bevel at a lower plate 1 side upward from the horizontal line, and then angle of bevel at an upper plate 2 side is parallel to the lower plate side to reduce the cross sectional area of the bevels. An electrode nozzle 8 providing an electric conducting tip 7 having an eccentric hole in this bevel at the tip part, is inserted and the tip part of a welding wire 6 passed through the electric conducting tip 7 is rotated by rotating the electrode nozzle 8 to rotate an arc at high speed and the welding is executed in one pass and one layer.

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