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1. 发明专利

JP2000121328A DEFORMATION MEASURING APPARATUS 失效
公开(公告)号：JP2000121328A
公开(公告)日：2000-04-28
申请号：JP29072598
申请日：1998-10-13
申请人： MITSUBISHI HEAVY IND LTD
发明人： YAMAURA TSUYOTOSHI , KAI TOKIO
IPC分类号： G01L1/24 , G01B11/16
摘要： PROBLEM TO BE SOLVED: To provide a deformation measuring apparatus which can measure deformation in a section longer than a section wherein an optical fiber reciprocates. SOLUTION: This deformation measuring apparatus detects back scattered light of an optical fiber provided on an object to be measured and measures the deformation caused in the object to be measured by measuring distortion in the optical fiber. Two adjusting means 25 and 26 are arranged on two members 21 and 22 as objects to be measured facing the members to adjust the interval of the member 21 and 22 and the optical fiber 11 is arranged so as to reciprocates up to a specified frequency between the two adjusting means 25 and 26.

2. 发明专利

JP2000111339A METHOD FOR LAYING OPTICAL FIBER AND DISTORTION-DETECTING DEVICE USING OPTICAL FIBER 失效
公开(公告)号：JP2000111339A
公开(公告)日：2000-04-18
申请号：JP28100898
申请日：1998-10-02
申请人： MITSUBISHI HEAVY IND LTD
发明人： KAI TOKIO , YAMAURA TSUYOTOSHI , TSUKANO MASAZUMI , INOUE YOSHIAKI , SUGIMURA TADASHI
IPC分类号： E21D9/10 , G01B11/16 , G01C7/06 , G01C15/00
摘要： PROBLEM TO BE SOLVED: To efficiently detect the deformation and crack of a tunnel by fixing an optical fiber at a specific interval so that it is extended in a circumferential direction at each concrete placement unit of lining for composing the tunnel. SOLUTION: First, an optical fiber distortion sensor 1 is inserted into a groove 10 for laying. Then, an adhesive 4 is injected and filled into a groove 10 and the inner wall surface of an adjacent lining 3 and a fixing tool 8 is mounted for adhesion and fixing so that the optical fiber distortion sensor 1 can be pressed. After that, the adhesive 4 is applied to the inner wall surface of the lining around the groove 10 at a central position between each of the fixing tools 8 along the groove 10 and a cover 9 is glued and fixed, thus loosely supplying the optical fiber distortion sensor 1 in the groove 10 and preventing it from departing from the groove 10 so that it can be expanded and contacted freely at the position of the cover 9, thus preventing the optical fiber distortion sensor 1 from projecting from the inner wall surface of the lining 3 and from being exposed to the wind pressure of a traveling body for releasing.

3. 发明专利

JPH11304440A DEFORMATION MONITOR DEVICE 失效
公开(公告)号：JPH11304440A
公开(公告)日：1999-11-05
申请号：JP2865899
申请日：1999-02-05
申请人： MITSUBISHI HEAVY IND LTD
发明人： KAI TOKIO , YAMAURA TSUYOTOSHI , INOUE YOSHIAKI , SUGIMURA TADASHI , TSUKANO MASAZUMI
IPC分类号： G01L1/24 , G01B11/16 , G01M11/00
摘要： PROBLEM TO BE SOLVED: To provide a deformation monitor device capable of detecting deformation of an object to be monitored in three-dimensional direction in high sensitivity. SOLUTION: A device is formed of an optical fiber 1 laid in nearly parallel with an object 5 to be monitored, a reference plate 6 provided in nearly parallel with the object 5, transmitting means 21-2n for transmitting the change is the positional relation between the object 5 and the reference plate 6 in the three- dimensional direction to the optical fiber 1, and a detecting means for detecting the deformation generated on the object 5 measuring the deflected variable of the optical fiber 1 generated by the transmission by the transmitting means 21-2n.

4. 发明专利

JPH11258356A EARTH AND SAND COLLAPSE DETECTION SYSTEM 失效
公开(公告)号：JPH11258356A
公开(公告)日：1999-09-24
申请号：JP6539798
申请日：1998-03-16
申请人： MITSUBISHI HEAVY IND LTD
发明人： KAI TOKIO , YAMAURA TSUYOTOSHI , INOUE YOSHIAKI , SUGIMURA TADASHI , TSUKANO MASAZUMI
IPC分类号： E02D17/20 , G01B11/00 , G01D21/00 , G01N33/24 , G01V8/16
摘要： PROBLEM TO BE SOLVED: To provide an earth and sand collapse detection system for detecting the collapse of earth and sand and its scale. SOLUTION: A plurality of optical fibers 11, 12, and 13 are inserted into a flexible tube A that is provided in the target earth and sand, and characteristic slacks 111 and 121 and loops (annular parts) 11a, 12a, and 13a with a constant diameter are provided. When the above target collapses, the flexible tube A is stretched, the loop diameter gradually changes according to the slack of the optical fibers and the amount of light transmission is attenuated due to the slack of the optical fibers. Therefore, a plurality of emission means 31, 32, and 33 for emitting light to the optical fibers 11, 12, and 13, a plurality of light reception means 41, 42, and 43 for receiving light from the optical fibers 11, 12, and 13, and a detection means 6 for detecting the collapse of the earth and sand based on the amount of received light in the light reception means 41, 42, and 43, are provided.

5. 发明专利

JPH1062212A SYSTEM FOR PREDICTING DANGER OF TUNNEL 失效
公开(公告)号：JPH1062212A
公开(公告)日：1998-03-06
申请号：JP22350796
申请日：1996-08-26
申请人： MITSUBISHI HEAVY IND LTD
发明人： KAI TOKIO , YAMAURA TSUYOTOSHI , KONO TAKAYUKI , INOUE YOSHIAKI
IPC分类号： E21D9/06 , G01B11/16 , G01C7/06 , G01D21/00 , G01K1/14 , G01K11/12 , G02B6/00
摘要： PROBLEM TO BE SOLVED: To detect the shape change of a tunnel, a fire in the tunnel and abnormality on the outer wall of the tunnel by the same system and to continuously monitor abnormality. SOLUTION: Three optical fibers, i.e., a distortion measuring optical fiber 1a, a temperature measuring optical fiber 1b and a wall face temperature measuring optical fiber 1c, are laid along the inwall 56 of a tunnel 10. These fibers 1a to 1c constitute one continuous optical fiber 1 by successively connecting respective ends of the fibers 1a to 1c, and the fiber 1 is connected to a distortion measuring instrument 2. The instrument 2 generates an optical pulse, makes the pulse incident upon the fiber 1, receives Brillouin scattered light to measure distortion, and outputs the measured distortion quantity to an abnormality monitoring device 3. The device 3 always monitors the distortion quantity measured by the instrument 2, processes respective signals and outputs a distortion detecting alarm 4, a fire detection alarm 5 and a tunnel outer-wall abnormality alarm 6.

6. 发明专利

JPH09113380A EXPLOSION-PROOF TYPE SENSING DEVICE 失效
公开(公告)号：JPH09113380A
公开(公告)日：1997-05-02
申请号：JP26556495
申请日：1995-10-13
申请人： MITSUBISHI HEAVY IND LTD
发明人： KAI TOKIO , YAMAURA TSUYOTOSHI , YOSHIKAWA KEIJI
IPC分类号： G01K11/06 , G01J5/00 , G01J5/58 , G01K11/12 , G01M3/38 , G01M11/00 , G01N21/59 , G08B29/04
摘要： PROBLEM TO BE SOLVED: To provide a device which can measure a different kind of light sensor by the optical fiber of one loop and one monitoring device. SOLUTION: This device comprises a monitoring device (OTDR) 1 with a light transmitter-receiver 1a, 1b, an optical fiber 2 whose one end is connected to the OTDR 1 and a sensor box 19 fitted to the arbitrary place of the optical fiber 2. The sensor box 19 is provided with a means for pressing down or cutting off the optical fiber 2 when the sensor box 19 detects a predetermined temperature or a leakage oil.

7. 发明专利

JPH08233633A POWDER/GRAIN LEVEL METER 失效
公开(公告)号：JPH08233633A
公开(公告)日：1996-09-13
申请号：JP3661895
申请日：1995-02-24
申请人： MITSUBISHI HEAVY IND LTD
发明人： HIGUCHI TOSHINAO , IKEDA KOJI , KAI TOKIO , YAMAURA TSUYOTOSHI
IPC分类号： G01F23/26 , G01F23/24
摘要： PURPOSE: To highly precisely measure the level of particulate objects whose bulk density is changed according to environmental conditions by calculating the level of the particulate objects based on capacitance between electrodes, resistance signals, and capacitance according to respective bulk density of the particulate objects measured beforehand. CONSTITUTION: Capacitance, bulk density, and resistance of particulate objects 2 under respective environmental conditions at the maximum level of an electrode 3 are measured beforehand, the capacitance plus density characteristics and the resistance plus density characteristics are stored in a capacitance/density characteristics memory 10 and a resistance/density characteristics memory 11 respectively. And output of a capacitance meter 4 to the bulk density of the particulate objects to be measured in the electrode 3 is transmitted to a level computer 7 via a capacitance/density/level converter 6. And the output of an ohmmeter 5 is transmitted to the level computer 7 via a resistance/density/ level converter 8 along with the output of the memory 11. The computer 7 calculates and outputs the level signal 12S of the particulate objects 2 based on these data.

8. 发明专利

JPH0719931A FLUIDIZED-BED SURFACE POSITION DETECTING DEVICE 失效
公开(公告)号：JPH0719931A
公开(公告)日：1995-01-20
申请号：JP16459093
申请日：1993-07-02
申请人： MITSUBISHI HEAVY IND LTD
发明人： KAI TOKIO , KOBAYASHI YOSHINORI
IPC分类号： G01B21/00 , G01F23/22
摘要： PURPOSE:To detect the surface position of a fluidized-bed accurately by passing the cooling air into a spiral groove provided between an inner and an outer cylinders, and providing plural temperature sensors, each of which is provided with a thermocouple, at the tip of the outside cylinder and at an air inlet part of the inside cylinder with an optional interval in the height direction of a furnace wall. CONSTITUTION:The gas from a gas inlet 3 passes through a multi-hole plate 4, abd mixed with the fluidized material for combustion inside of a fluidized-bed 5, and discharged from a gas outlet 6 through an air layer 7. Temperature sensors S1-S5 are provided on the furnace wall in order, and a fin is formed in an outer cylinder 11, and a spiral air passage 14 provided between the outer cylinder 11 and the inner cylinder 12. The air inlet 13 is connected to a cooling pipeline 9, and an air outlet 15 is connected to an inlet 13 of the adjacent sencsor through the pipeline 9, and a thermocouple 17, 18, which are provided at the tip of the outer cylinder 11 and the inlet 13, are cooled by the air. Air temperature of the inlets of the sensors S1-S5 are measured by the thermocouple 18, and the measured value is input with a value measured by the thermocouple 17 to a signal processing device 8. The device 8 computes a difference between both the measured values, and obtains the temperature difference in order form the lowest sensor S1, and in the case where a difference between the adjacent sensor is at a specified value or more, existence of the surface R of the fluidized-bed 5 is judged.

9. 发明专利

JPH06294684A HIGH TEMPERATURE PART MONITOR 失效
公开(公告)号：JPH06294684A
公开(公告)日：1994-10-21
申请号：JP8193993
申请日：1993-04-08
申请人： MITSUBISHI HEAVY IND LTD
发明人： WATANABE NOBUYA , KAI TOKIO
IPC分类号： G01J1/02
摘要： PURPOSE:To embody an inexpensive high temperature part monitor which is applicable even when a carrying path is covered with a tunnellike cover. CONSTITUTION:A light transmitter 3 is disposed above one end of a carrying path 1 for powder material 2 whereas a light receiver 4 is disposed above the other end. Light radiated from the transmitter 3 is received by the receiver 4 which then delivers an electric signal to a signal level discriminator 8. When a high temperature part is generated in the powder material 12 being carried on the carrying path 1, it is detected based on the fluctuation of the intensity of light passing above the carrying path 1. This constitution realizes an inexpensive monitor which is applicable even when the carrying path 1 is covered with a tunnellike cover.

10. 发明专利

JPH0650821A STATE MONITOR FOR AIR PREHEATER 失效
公开(公告)号：JPH0650821A
公开(公告)日：1994-02-25
申请号：JP22510692
申请日：1992-07-31
申请人： MITSUBISHI HEAVY IND LTD
发明人： KAI TOKIO
IPC分类号： G01J5/10
摘要： PURPOSE:To detect at an early stage the clogging of element due to dirt and corrosion of an air preheater heating element caused by the deposit of unburned fuel in a state monitor provided with an overheat monitoring means detecting an abnormal temperature part inside the air preheater. CONSTITUTION:Provided are a memory 14 to store infrared sensor output at normal element state in accordance with the detecting position in circumferential and diametral directions of a heating element with the infrared sensor, and means 16, 18, 20, 21 outputting alarm signals 19 and 22 when a comparison of the infrared sensor output signal at the moment with the infrared sensor output in the memory corresponding to the detection position shows a difference over a determined value.

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