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1. 发明专利

JPH10281921A METHOD AND DEVICE FOR MONITORING LEAKAGE OF GAS PIPING 失效
公开(公告)号：JPH10281921A
公开(公告)日：1998-10-23
申请号：JP8809497
申请日：1997-04-07
申请人： HITACHI LTD , TOKYO GAS CO LTD , HITACHI ENG SERVICE
发明人： UENO YUICHIRO , SENOO MAKOTO , YANAGIBASHI MINORU , KATO SHUICHI , WAKASA KIYOUSUKE
IPC分类号： G01M3/24
摘要： PROBLEM TO BE SOLVED: To detect the fine leakage of a gas piping or the leakage which was undetectably buried in a noise and plot its position. SOLUTION: A pressure wave from a pressure wave generating device 60 is injected into a gas piping to excite the fluctuation in the leakage sound of a gas leakage point Z, and the leakage sound intensified in amplitude and fluctuated in cross correlation is detected by two microphones 11, 12 set in the piping. The cross correlation value is calculated by a cross correlation calculating part 30 from the two A/D converted detection signals. A computer 40 reads the peak value of the correlation values by a delay time calculating part 42, judges gas leakage when it is a threshold or more, and standardizes the leakage position X of gas from the delay time of peak value or the time difference of the microphones 11, 12.

2. 发明专利

JP2002189083A PREVENTION METHOD FOR MISDETECTION OF BURIED PIPE DETECTOR 失效
公开(公告)号：JP2002189083A
公开(公告)日：2002-07-05
申请号：JP2000390836
申请日：2000-12-22
申请人： TOKYO GAS CO LTD
发明人： SUYAMA KENJI , KOMORI MITSUNORI , WAKASA KIYOUSUKE , IMAOKA TAKASHI
IPC分类号： G01V3/08
摘要： PROBLEM TO BE SOLVED: To prevent a misdetection during surveying an embedded pipe position from the ground surface by sending a current of transmission signal to the embedded pipe and detecting the magnetic field generated by the current flowing in the embedded pipe with a receiver on the ground. SOLUTION: An embedded pipe surveying device surveys embedded pipe position by detecting a magnetic field generated by a transmission current f0 sent in the embedded pipe 1 and flowing in the embedded pipe 1 with a receiver (1). By overlapping signals fHz and 2fHz, consisting of two different frequencies from the transmission signal f0 on the transmission signal f0 sent in the embedded pipe, whether in-phase or reversed phase from the transmission signal f0 is determined from the waveform of the magnetic field of the two different frequencies detected with the receiver (2). By differentiating combined wave of the signals fHz and 2fHz of two frequencies which differ from the transmission signal detected with the receiver, whether in-phase or reversed phase from the transmission signal f0 is determined.

3. 发明专利

JP2000156803A TUBE INSIDE OBSERVATION CAMERA DEVICE 失效
公开(公告)号：JP2000156803A
公开(公告)日：2000-06-06
申请号：JP32833798
申请日：1998-11-18
申请人： TOKYO GAS CO LTD
发明人： SUYAMA KENJI , WAKASA KIYOUSUKE
IPC分类号： H04N5/225 , G02B23/24
摘要： PROBLEM TO BE SOLVED: To perform observation with an optimum image all the time by making a remote control part to preset illumination light quantity and focal distance in every tube diameter of a tube to be observed and making preset values selectable with a changeover switch. SOLUTION: A tube kind changeover switch switches jute (steel tube wrapped with jute), galvanization (galvanized steel pipe) and PE (polyethylene tube), and a pipe diameter changeover switch switches switchable pipe diameters 25, 32, 40, 50, 80 and 100 (A). The values of illumination light quantity and focal distance are stored as preset values for every tube diameter in a remote controlling part 10 in accordance with respective types of tubes to be observed, and the preset values are selected in accordance with the positions of the respective changeover switches. That is, appropriate focal distance and illumination light quantity are preliminarily set in accordance with respective diameters, they are stored as the preset values in the part 10 of a device main body 1, each preset value is selected by the pipe diameter switch, and an optical system 7 and a light source 8 for illumination are controlled through a control part 9.

4. 发明专利

JP2007063782A One-way universal excavation equipment and one-way universal excavation method 有权
标题翻译：一路通用挖掘设备和单向通用挖掘方法
公开(公告)号：JP2007063782A
公开(公告)日：2007-03-15
申请号：JP2005248454
申请日：2005-08-29
申请人： Capty Co Ltd , Koken Boring Mach Co Ltd , Tokyo Gas Co Ltd , 東京瓦斯株式会社 , 株式会社キャプティ , 鉱研工業株式会社
发明人： WAKASA KIYOUSUKE , ABE HIROSHI , KATSUTA TSUTOMU , MIWA SHINJI , NAGASHIMA MASARU , UTO MASATAKA , TAKEUCHI HISAO
IPC分类号： E21D9/08 , E21D9/093
摘要： PROBLEM TO BE SOLVED: To provide one-way universal excavation equipment and a one-way universal excavation method, which enable curvilinear excavation to be sufficiently exerted as the advantage of universal excavation, enable the universal excavation to be performed with great excavation efficiency, and enable effective striking excavation to be sufficiently exerted even in an encounter with a place hard to be excavated. SOLUTION: A rod part in which a plurality of extension rods are connected to one another is connected to the back end of an outer tool 6. An inner tool 7 which can be inserted into and extracted from the outer tool 6 and the rod part is housed in the outer tool 6. Thus, since the inner tool 7 does not reach a starting side and the rod part is provided with a single-pipe structure and light equipment, the curvilinear excavation as one-way universal excavation can be sufficiently exerted by virtue of the easiness of bending. Additionally, since the rod part with the single-pipe structure is lightweight, the excavation efficiency is increased, and a striking force for breaking through the place hard to be excavated is sufficiently exerted. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供单向通用挖掘设备和单向通用挖掘方法，使得能够充分发挥曲线挖掘作为通用挖掘的优点，能够进行大型挖掘的通用挖掘即使在与难以挖掘的地方相遇的情况下也能够有效地进行打击挖掘。解决方案：将多个延伸杆相互连接的杆部连接到外部工具6的后端。内部工具7可以从外部工具6插入和拔出，因此，由于内部工具7没有到达起始侧，并且杆部设置有单管结构和轻型设备，所以作为单向通用挖掘的曲线挖掘可以是由于弯曲的容易性而充分发挥作用。此外，由于具有单管结构的杆部件是轻质的，所以挖掘效率提高，并且充分发挥用于破坏难以挖掘的位置的打击力。版权所有（C）2007，JPO＆INPIT

5. 发明专利

JP2004271408A Infiltrated water treatment device and infiltrated water treatment method 审中-公开
标题翻译：渗透水处理装置和渗透水处理方法
公开(公告)号：JP2004271408A
公开(公告)日：2004-09-30
申请号：JP2003064315
申请日：2003-03-11
申请人： Tokyo Gas Co Ltd , 東京瓦斯株式会社
发明人： WAKASA KIYOUSUKE , KOMORI MITSUNORI , SUYAMA KENJI , KOYANAGI SHINICHI
IPC分类号： G01M3/02 , F16L55/00 , F16L55/12 , F17D5/06 , G01M3/24 , G01M3/26
摘要： PROBLEM TO BE SOLVED: To suck infiltrated water in a pipe, and to detect surely and efficiently a leak spot where the water infiltrates. SOLUTION: An inspection inner pipe 3 is inserted into a gas pipe, and while moving the inspection inner pipe 3, an image in a pipe photographed by a camera 15 is checked by a camera monitor 38. When confirming the infiltration of the water in the pipe 5-1, the water is sucked by an infiltrated water sucking hose 36. After sucking the water, an airtightness test in the peripheral part is performed, to thereby detect the leak spot where the water infiltrates. A balloon 17 for airtightness is expanded on the spot where the inspection inner pipe 3 is inserted into a prescribed position, and an airtightness test section is set up, and a gas such as the air or a gaseous body is enclosed in the test section and pressurized, and the leak spot is specified by pressure measurement of the enclosed gas or by leak sound detection of the gas by microphones 25-1, 25-2. COPYRIGHT: (C)2004,JPO&NCIPI
摘要翻译：要解决的问题：吸入管道中的渗透水，并且有效地检测水渗入的泄漏点。
解决方案：将检查内管3插入气体管中，并且在移动检查内管3的同时，通过照相机监视器38检查由照相机15拍摄的管中的图像。当确认在管道5-1中的水中，水被浸入的吸水软管36吸入。在吸水之后，进行周边部分的气密性试验，从而检测水渗入的泄漏点。用于气密性的气囊17在检查内管3插入规定位置的位置扩大，并且设置气密性试验部，并且诸如空气或气体的气体被包封在试验部分中，并且通过密封气体的压力测量或通过麦克风25-1,25-2对气体的泄漏声检测来指定泄漏点。版权所有（C）2004，JPO＆NCIPI

6. 发明专利

JPH10160614A ACOUSTIC DEVICE FOR SPECIFYING LEAKAGE POSITION 失效
公开(公告)号：JPH10160614A
公开(公告)日：1998-06-19
申请号：JP31536196
申请日：1996-11-27
申请人： TOKYO GAS CO LTD
发明人： SATO YUICHI , WAKASA KIYOUSUKE
IPC分类号： G01M3/24 , G06F17/15
摘要： PROBLEM TO BE SOLVED: To provide such an acoustic device for specifying leakage position that can measure accurately a distance between microphones without complicated configuration and specify the leaking position of piping precisely. SOLUTION: This device is provided with microphones 2 and 3 which are provided on both ends of a piping 1 so as to measure leaking sound at the leaking position, and a signal processing part 10 which specifies the leaking position between the microphones 2 and 3 in the piping 1 according to the difference in propagation time of leaking sound that is obtained by applying the cross-correlation method to two acoustic signals picked up through the microphones 2 and 3 and a distance between the microphones 2 and 3. In this case, a speaker 4 is placed outside of the microphones 2 and 3 in the piping 1, and the microphones 2 and 3 measure the sound from the speaker 4, and then the signal processing part 10 applies the cross-correlation method to two acoustic signals that the microphones 2 and 3 obtain the sound through the speaker 4, thereby computing a distance between the microphones.

7. 发明专利

JPH10185743A DISPLAY METHOD FOR LEAK POSITION IN SPECIFICATION METHOD FOR LEAK POSITION IN PIPE 失效
公开(公告)号：JPH10185743A
公开(公告)日：1998-07-14
申请号：JP34182296
申请日：1996-12-20
申请人： TOKYO GAS CO LTD
发明人： KOMORI MITSUNORI , WAKASA KIYOUSUKE
IPC分类号： G01M3/24
摘要： PROBLEM TO BE SOLVED: To obtain a display method in which a leak position in a pipe can be specified precisely by a method wherein sound waves are output from the outer side from a branch cheese at the pipe and the sound waves are detected by a plurality of sound- wave detecting means. SOLUTION: A loudspeaker 9 is installed on the upstream side from a branch tee 4 at a pipe 6, and a loudspeaker 10 is installed on the downstream side from a branch tee 5. First, a white sound is output from the loudspeaker 9. The white sound from the loudspeaker 9 is measured by a microphone 7 and a microphone 8, and a sound- wave signal obtained by the microphone 7 and a sound-wave signal obtained by the microphone 8 are processed by a cross-correlation method. Then, a white sound is output from the loudspeaker 10. The white sound from the loudspeaker 10 is measured by the microphones 7, 8, and a sound-wave signal obtained by the microphone 7 and a sound-wave signal obtained by the microphone 8 are processed by a cross-correlation method. Thereby, when a relative position regarding a leak position in the section up to the branch tee 5 from the branch tee 4 is detected, the leak position can be specified, and the distance up to the leak position from the branch tee 4 or 5 can be displayed.

8. 发明专利

JPH1062292A SIGNAL PROCESSING METHOD IN PIPE LEAKAGE-POSITION LOCATING METHOD 失效
公开(公告)号：JPH1062292A
公开(公告)日：1998-03-06
申请号：JP22192296
申请日：1996-08-23
申请人： TOKYO GAS CO LTD
发明人： KOMORI MITSUNORI , WAKASA KIYOUSUKE
IPC分类号： G01M3/24 , F17D5/06 , H03H17/02
摘要： PROBLEM TO BE SOLVED: To provide a signal processing method in a method for locating leakage in piping capable of applying a sonic wave method for locating leakage in piping even to piping such as gas piping, etc., with relatively low pressure in the piping. SOLUTION: In a signal processing method in a method for locating leakage in piping which locates leakage in piping on the basis of the time difference in propagation of leakage sonic waves detected by microphones 2 provided for both sides of the piping, the predetermined low frequency component of sound wave signals detected by the microphones 2 at both ends is cut by an analog high pass filter in an amplifier 5, and then digital band pass filter processing is performed to the sound wave signals at a data processing unit 6 to remove the noise components of the sonic wave signals.

9. 发明专利

JPH1062291A SOUND COLLECTING DEVICE IN PIPE 失效
公开(公告)号：JPH1062291A
公开(公告)日：1998-03-06
申请号：JP22359896
申请日：1996-08-26
申请人： TOKYO GAS CO LTD
发明人： KOMORI MITSUNORI , WAKASA KIYOUSUKE
IPC分类号： G01M3/24
摘要： PROBLEM TO BE SOLVED: To install a microphone in a gas pipe with ease and reliability for detecting damages, etc., which occurs in the gas pipe from sounds in the pipe. SOLUTION: This sound collecting device comprises a sound collecting device main body 8 of the approximately same diameter as a gas pipe one end of which is fixed to the end of the gas pipe, a microphone 4 which detects sounds in gas piping, a holding part which is branched off from the sound collecting device main body and holds the microphone approximately at the center of the sound collecting device main body, a sound absorbing part 12 which is provided at the other end of the sound collecting main body and absorbs inner sounds, and an exhaust valve 14 which is provided for the end of the sound collecting part and discharges a gas from the inside of the sound collecting part to the outside. The sound collecting device main body is connected to the gas pipe, and the inside of the sound collecting device is impregnated with a gas in the gas piping to collect sounds occurring in the gas piping. Thereby, it is possible to install a microphone in the gas piping with ease and reliability and to collect sounds in the gas piping precisely.

10. 发明专利

JP2006037543A Pipe laying construction method by one-way excavation pipe-jacking method 有权
标题翻译：通过一维挖掘管道方法对管道施工方法进行了分析
公开(公告)号：JP2006037543A
公开(公告)日：2006-02-09
申请号：JP2004219983
申请日：2004-07-28
申请人： Kanpai Co Ltd , Koken Boring Mach Co Ltd , Tokyo Gas Co Ltd , 東京瓦斯株式会社 , 株式会社関配 , 鉱研工業株式会社
发明人： WAKASA KIYOUSUKE , ABE HIROSHI , ARAI KAZUO , KATSUTA TSUTOMU , SUZUKI TAKEHIKO , MIWA SHINJI , AKIYAMA MASAO , TAKEUCHI HISAO , MIYAHARA MAHO
IPC分类号： E21D9/06 , E21B10/02 , E21D9/08 , F16L1/024
摘要： PROBLEM TO BE SOLVED: To provide a pipe laying construction method by a one-way excavation pipe-jacking method capable of miniaturizing a motive power source by minimizing jacking resistance and bending resistance. SOLUTION: This pipe laying construction method comprises a process of excavating a pilot hole 35 including a curved part in the ground by a pilot excavation tool 1 having a curve constructible bit 4 on the tip, a process of building up a casing pipe 20 having a ring bit 21 on the tip at its outer periphery with the pilot excavation tool 1 as a guide, a process of recovering the pilot excavation tool 1, a process of inserting a laying pipe inside the casing pipe 20, and a process of recovering the casing pipe 20 while leaving the laying pipe as it is. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：通过使起动阻力和抗弯曲性最小化的能够使动力源小型化的单向挖掘推顶方法来提供铺管施工方法。解决方案：这种铺管施工方法包括通过在顶端具有可弯曲的钻头4的先导式挖掘工具1挖掘包括弯曲部分的导向孔35的过程，建立套管的过程 20，其中，作为引导件的先导式挖掘工具1在其外周端部处具有环形钻头21，回收先导式挖掘工具1的过程，将套管插入套管20内的过程，以及在放置管道的同时回收套管20。版权所有（C）2006，JPO＆NCIPI

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