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51. 发明专利

JPS6239856B2 失效
公开(公告)号：JPS6239856B2
公开(公告)日：1987-08-25
申请号：JP10222580
申请日：1980-07-25
申请人： TOKYO GAS CO LTD
发明人： MATSURA MASAYUKI , SAITO KIMIMASA , YAMAMOTO YOSHIHIRO , HOSOHARA YASUHARU
IPC分类号： H04B13/00 , H04B13/02

52. 发明专利

JPS58113846A AUTOMATIC GAS CALORIMETER 失效
公开(公告)号：JPS58113846A
公开(公告)日：1983-07-06
申请号：JP21319781
申请日：1981-12-28
申请人： TOKYO GAS CO LTD
发明人： IZUTSU WAICHIROU , NAGAKURA ROKUROU , FUJIKURA KIKUTAROU , YAMAMOTO YOSHIHIRO , HAYASHIYAMA TAIZOU , HOSOHARA YASUHARU
IPC分类号： G01N25/42 , G01N25/40
摘要： PURPOSE:To reduce a measurement error, by measuring temperature, an atmospheric pressure, a gas temperature of a heat absorbing medium of a calorimeter and computing the measurement data. CONSTITUTION:After gas is vapor-saturated by a gas wetting device 5, it is weighed by a wet type gas meter 6 to burn it by the use of a gas burner 10 of a heat exchanger 9. Meanwhile, after air for combustion is vapor-saturated by an air wetting device 21, it is fed into the heat exchanger 9. A flow water (a heat absorbing medium) is fed to a heat absorbing part 11 of the heat exchanger 9 from a head tank 15 to absorb the burning heat of the gas burner 10 thereat. Temperatures of water flowing out from the heat absorbing part 11 are measured by a flow-in water thermometer 19 and a flow-out hot water theremometer 20, and temperature of gas is equivalent to temperature of sealed water of the wet type gas meter 6, whereby it is measured by a resistance system gas thermometer 25. A reading of an atmosheric pressure is taken by an atmospheric pressure gauge 24. The measurement data are inputted to a control computer 28 to compute them according to a given computing formula, and the results are displayed in a display unit.

53. 发明专利

JPH08304293A ROBOT RUNNING THROUGH PIPE 失效
公开(公告)号：JPH08304293A
公开(公告)日：1996-11-22
申请号：JP11431195
申请日：1995-05-12
申请人： TOKYO GAS CO LTD
发明人： SUYAMA KIICHI , HOSOHARA YASUHARU
IPC分类号： G01B11/24 , B61B13/10 , G01B11/30 , G01N21/88 , G01N21/954 , G01N29/26
摘要： PURPOSE: To obtain a robot which can travel, by means of radio wave, even through a pipe through which radio wave does not propagate over a long distance and which can transmit radio wave onto the ground from the inside of pipe. CONSTITUTION: The robot 31 comprises traveling wheels 35, a camera 41, a light 42, and a communication unit 46 and can travel arbitrarily through a pipe. The communication unit 46 is connected with an antenna wire 2 being fed out freely from a reel 4 disposed on the outside of a pipe 50. On the other hand, an inspection unit 1 having an antenna 20 is set on the ground side while comprising a transmitter for transmitting a command to the robot 31 and a receiver for receiving the image in the pipe being picked up by means of the robot. With such arrangement, radio wave can be transmitted well by means of the antenna wire 2 even for a nonmetallic pipe 50 through which the radio wave does not propagate well. Furthermore, the robot 31 can be taken out easily to the outside of pipe by means of the antenna wire 2 upon stalling within the pipe.

54. 发明专利

JPH07264758A METHOD OF PREVENTING AND MONITORING DAMAGE ON EMBEDDED PIPE 失效
公开(公告)号：JPH07264758A
公开(公告)日：1995-10-13
申请号：JP5357094
申请日：1994-03-24
申请人： TOKYO GAS CO LTD
发明人： HOSOHARA YASUHARU , SUYAMA KENJI , IMAOKA TAKASHI
IPC分类号： G01D5/353 , G01D5/26 , G01V3/02 , G01V8/16 , H02G9/00
摘要： PURPOSE:To prevent damage of a pipe to be embedded due to a cutting blade of a cutting machine. CONSTITUTION:Cables 14 or optical fibers are arranged with an adequate interval in the shape of a belt body 13 and these cables or optical fibers allows power feeding in the longitudinal direction of the belt shape body 13 to constitute a long-length body 12 for monitoring and this long-length monitoring body is embedded at least in the upper side or at least in the next side of the embedded pipe 11 as the monitoring object. Simultaneously, an apparatus for transmitting/receiving the monitoring pulse Pt or monitoring optical pulse to or from the cable or optical transmitting/receiving apparatus is provided at one end side of the length-length body for monitoring and disconnection of cable or optical fiber due to damage on the long-length body for monitoring or partial damage or deformation of optical fiber will be monitored from one end side (a) with an echo Pe of the monitoring pulse or monitoring optical pulse transmitted to the cable or optical fiber.

55. 发明专利

JPH0755750A MONITORING METHOD FOR PREVENTION OF DAMAGE OF BURIED PIPE 失效
公开(公告)号：JPH0755750A
公开(公告)日：1995-03-03
申请号：JP20733993
申请日：1993-08-23
申请人： TOKYO GAS CO LTD
发明人： HOSOHARA YASUHARU , SUYAMA KENJI
IPC分类号： G01N27/20
摘要： PURPOSE:To prevent the damage of a buried pipe by an excavating blade of an excavator CONSTITUTION:Wires 14 for monitoring are provided at proper intervals throughout the inside of a belt-like insulator 13 and made electrifiable in the direction of the length of the belt-like insulator 13, so that a long body 12 for monitoring be constructed. The long body 12 for monitoring is buried at least on the upper side of a buried pipe 11 being the object of monitoring, while a transmitter 15 is provided at one of two points of the long body 12 being apart at a proper distance from each other and a receiver 16 at the other. A signal for monitoring impressed on the wires 14 for monitoring from the transmitter 15 is received constantly by the receiver 16 and the damage of the long body 12 for monitoring is monitored on the basis of the interruption of the signal for monitoring in this method.

56. 发明专利

JPH074942A MEASURING METHOD OF INSIDE DIAMETER 失效
公开(公告)号：JPH074942A
公开(公告)日：1995-01-10
申请号：JP16855193
申请日：1993-06-15
申请人： TOKYO GAS CO LTD
发明人： SUYAMA KIICHI , FURUSAWA HAJIME , HOSOHARA YASUHARU , KOBORI TAKASHI
IPC分类号： G01B15/00 , G01N22/02 , G01V3/12
摘要： PURPOSE:To provide a measuring method in which the inside diameter of a buried pipe such as a gas pipe or the like can be measured easily and surely. CONSTITUTION:A transmitter 12 and a receiver 15 are inserted respectively into both sides of a pipe 2 to be measured. Radio waves at a prescribed frequency band are transmitted continuously from the transmitter 12, and they are received by the receiver 15. The receiver 15 investigates the strength of the received radio waves, and it finds a frequency at a point at which the strength is fluctuated largely. Then, the frequency at the point is substituted in the relational expression of the frequency to the inside diameter of the pipe: (inside diameter) = (light velocity)/(1.706 X frequency), and the smallest inside diamter of the pipe in a part to be inspected is computed.

57. 发明专利

JPH0659048A INDUCTIVE TRANSMISSION TYPE BURIED PIPE DETECTER AND ITS TRANSMITTER 失效
公开(公告)号：JPH0659048A
公开(公告)日：1994-03-04
申请号：JP21175192
申请日：1992-08-07
申请人： TOKYO GAS CO LTD
发明人： HOSOHARA YASUHARU , NAGASHIMA SHINGO
IPC分类号： G01V3/10 , G01V3/11
摘要： PURPOSE:To make the detection of an electrical insulating spot possible by providing a pair of transmitting coils longitudinally in parallel with a space taken so that the direction of a magnetic pole may be a negative phase, and executing detection at a position where a receiving coil approachs the transmitting coil. CONSTITUTION:A pair of transmitting coils 2, 2 connected in series is longitudinally provided at an interval taken so that the direction of a magnetic pole may be a negative phase, and a receiving coil 3 is provided in a lateral direction crossing the arranging direction of the transmitting coils 2, 2 at right angles and moreover longitudinally in parallel. In the case where the electrical insulating spot of the insulating coupling of a buried pipe 11 is detected by a detector 10, measuring lines rectangular to an axial direction are set up at plural positions along the assumed axial direction of the pipe 11. The device 10 is moved in a state where in each measuring line, each arranging direction of the transmitting coils 2, 2 crosses the assumed axial direction at a right angle for measuring. The strength of a detected magnetic field is maximum when the pipe 11 takes a position just above the pipe 11. In addition, when the peak value of the strength of the detected magnetic field is displayed to the axial direction of the pipe 11, it becomes minimum at the spot of the insulating coupling, and the position of the insulating coupling can thereby be detected.

58. 发明专利

JPH04350553A METAL MATERIAL FLAW DETECTOR 失效
公开(公告)号：JPH04350553A
公开(公告)日：1992-12-04
申请号：JP12129191
申请日：1991-05-27
申请人： TOKYO GAS CO LTD , CHUGOKU X RAY CO LTD
发明人： HOSOHARA YASUHARU , SUZUKI KIWAMU , FUJIWARA SHIGERU , KAWABE SHUNEI
IPC分类号： G01N27/90
摘要： PURPOSE:To enable the diagnosing of a defect of a sample pipe at a high accuracy by making an AC signal with a phase and an amplitude preset overlap a received signal to be outputted from a receiving coil to prevent the generation of an abnormal flaw detection data. CONSTITUTION:An excitation signal f0 is applied to an excitation coil EC to generate received signals f1-f9 in receiving coils RC1-RC9, a noise of the same phase and a high frequency component are removed with a differential amplifier 7 of received signal interfaces RB1-RB9 and LPF8 and the results are applied to an adder 11. On the other hand, the signal f0 is applied to an addition terminal RT1 of addition signal processing modules RCC1-RCC9 and attenuated with an attenuator 5 of addition signal generation modules RA1-RA9. A phase angle is set 6, for example, at 15, an addition signal delayed in the phase angle by 15 is applied to a received signal modules RQ1-RQ9 to be added 11 to the signals f1-f9 applied previously and a noise is removed to send the results to a phase comparator 13 being kept at a fixed level. This enables stable phase detection thereby outputting a normal flaw detection data to a flaw detection data terminal RT5.

59. 发明专利

JPH04323551A METALLIC MATERIAL FLAW DETECTION DEVICE 失效
公开(公告)号：JPH04323551A
公开(公告)日：1992-11-12
申请号：JP9069191
申请日：1991-04-22
申请人： TOKYO GAS CO LTD , CHUGOKU X RAY CO LTD
发明人： HOSOHARA YASUHARU , SUZUKI KIWAMU , FUJIWARA SHIGERU , KAWABE SHUNEI
IPC分类号： G01N27/90
摘要： PURPOSE:To prevent accumulation of abnormal flaw detection data due to phase detection noise involved in data about flaw detection by enhancing the efficiency of phase detection using reception signals extracted from a defective portion, and improving the noise of the phase detection and the S/N ratio of data about flaw detection through the enhancement of the efficiency of the phase detection. CONSTITUTION:When an eddy current sensor comprised of an exciting coil EC and reception coils RC1-RC9 is inserted into a test tube and is gradually moved at fixed speed, reception signals are output from the sound portion and defective portion of the test tube. The reception signals output from the sound portion are eliminated by a limiter circuit 10 and only the reception signals of the defective portion are extracted. The extracted reception signals of the defective portion are subjected to phase detection so as to originate data on flaw detection. A plurality of reception coils are provided along the inner wall of the test tube.

60. 发明专利

JPH04265394A METAL DETECTING MECHANISM FOR EXCAVATOR 失效
公开(公告)号：JPH04265394A
公开(公告)日：1992-09-21
申请号：JP7736691
申请日：1991-02-19
申请人： TOKYO GAS CO LTD
发明人： HOSOHARA YASUHARU , SUZUKI KIWAMU
IPC分类号： E21D9/06 , G01V3/10 , G01V3/11
摘要： PURPOSE:To improve detecting sensitivity and to enable execution of operation for a long time by means of a battery by a method wherein the core of a coil is incorporated in a bit so that the occurrence of offset owing to an over current at a bit is reduced. CONSTITUTION:A core rod 6 is arranged in a bit 1 in a manner to extend obliquely sideways from the tip side, and coils 12a and 12b forming the constituting element of a metal detecting circuit are arranged around the core rod 6. The one end side of the core rod 6 is exposed to a notch part 4 exposed to the tip side of the bit 1 and the other end side thereof is exposed to a notch part 4 formed to the side of the bit 1. An electric wire 13 from the coils 12a and 12b is connected to the metal detecting circuit located in the rear. In operation, the bit 1 is pushed simultaneously with rotation by means of a rod 2 and a ground is excavated. In this case, when the detecting circuit is operated, a magnetic flux generated by means of the coils 12a and 12b flows through the core rod 6 and leaks from the two end sides thereof. When the bit approaches an embedded substance made of a metal, an over current is generated to bring a bridge circuit into an unbalancing state, and a comparator announces an alarm.

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