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1. 发明专利

JPH09159564A GAS LEAK DETECTION METHOD AND DEVICE USED THEREFOR 失效
公开(公告)号：JPH09159564A
公开(公告)日：1997-06-20
申请号：JP31882895
申请日：1995-12-07
申请人： TOKYO GAS CO LTD , TOKYO GAS CHEM KK
发明人： MACHINO AKIRA , ADACHI HARUHIKO , GOMI YASUSHIRO , AIDA KOJI , KAMITARI KATSUHIDE , HIRANO TADASHI , SUGIMOTO HIDEO
IPC分类号： G01M3/00 , G01M3/20
摘要： PROBLEM TO BE SOLVED: To early and accurately detect gases leaking in soil by preparing a uniform mixed gas out of fuel gas and helium gas, and feeding the mixed gas to a main branch pipe for detecting the helium gas after the leak and diffusion thereof. SOLUTION: A flow rate ratio control circuit 11 calculates and outputs a helium gas flow rate ratio corresponding to the flow rate of LP gas, in response to a signal outputted from a gas meter 7. Also, an automatic flow rate adjuster 10 makes the adjustment of the flow rate of helium gas, so as to keep a constant flow rate ratio of LP gas to helium gas, depending on a signal outputted from the circuit 11. Thus, the flow rate ratio of LP gas to helium gas is controlled at a constant value, and both of the gases are evenly mixed with a stationary mixer 8. Furthermore, a gas mixing device mixes both gases to a constant value on the basis of the constant flow rate ratio, and a mixture of the gases is supplied to an LP gas main branch pipe 3. When the mixed gas leaks at a leak position on the main branch pipe 3 in soil, helium gas having a high diffusion rate is quickly diffused. As a result, the leak position can be early and accurately identified with a detection means on the ground.

2. 发明专利

JPH06339183A REMOTE INSTALLATION SUPERVISORY EQUIPMENT USING TELEPHONE LINE 失效
公开(公告)号：JPH06339183A
公开(公告)日：1994-12-06
申请号：JP12439293
申请日：1993-05-26
申请人： TOKYO GAS CO LTD , SANKOSHA CO LTD , TOKYO GAS CHEM KK
发明人： ARINAGA NOBUYUKI , AIKAWA OKIYASU , ADACHI HARUHIKO
IPC分类号： G08B25/08 , H04M11/00 , H04Q9/00
摘要： PURPOSE:To centralizingly monitor remote installation at a supervisory centre by using a telephone line. CONSTITUTION:A central supervisory equipment 1 installed in a supervisory center, a supervisory terminal equipment 2 installed in the vicinity of the installation being a supervisory object are connected by a telephone line network 3 and analog data and alarm data of the installation are inputted to the supervisory terminal equipment 2 and the supervisory terminal equipment 2 makes a call based on an instruction from the central supervisory equipment 1 to send the analog data periodically to the center side and on the occurrence of the alarm, the alarm data are sent together with the analog data. The data are processed by a personal computer 4 of the central supervisory equipment 1.

3. 发明专利

JPH0679015B2 失效
公开(公告)号：JPH0679015B2
公开(公告)日：1994-10-05
申请号：JP12736386
申请日：1986-06-03
申请人： TOKYO GAS CO LTD
发明人： ADACHI HARUHIKO , OGUCHI NORITAKE , MASUDA TOMONORI
IPC分类号： G01N27/90

4. 发明专利

JPS63149549A METHOD FOR DIAGNOSING CORROSION OF REINFORCING BAR OR PIPING IN CONCRETE 失效
公开(公告)号：JPS63149549A
公开(公告)日：1988-06-22
申请号：JP29730386
申请日：1986-12-12
申请人： TOKYO GAS CO LTD
发明人： KAWASHIMA TAKESHI , ADACHI HARUHIKO
IPC分类号： G01N27/00 , G01N27/02
摘要： PURPOSE:To perform the accurate diagnosis of corrosion, by a method wherein high frequency and low frequency AC currents are applied between a reinforcing bar and an electrode for diagnosing the corrosion of concrete and the real part values of respective AC impedances are calculated. CONSTITUTION:Two kinds of high and low frequency AC currents are respectively independently applied between an electrode 6 for dianosing the corrosion of concrete and a reinforcing bar 2 by an AC current applying apparatus 5. The voltage response between the reinforcing bar 2 and the electrode 6 at this time is monitored by an AC potentiometer 11 and converted to AC impedance from the phase shift of an input signal and an output signal and the ratio of the amplitudes of both signals by a frequency response analyzer 12. Then, the real part of the AC impedance is used as the factor of corrosion diagnosis. Further, the real part value when the high frequency current is applied corresponds to the ohm resistance between the electrode 6 and the reinforcing bar 2, and, further, the real part value when the low frequency current is applied corresponds to the sum of the ohm resistance between the electrode 6 and the reinforcing bar 2 and the resistance relation to the corrosion speed of the interface of concrete 1 and the reinforcing bar 2. Therefore, the real part value at the time of high frequency is subtracted from the real port value at the time of low frequency and, when the value obtained is large, corrosion-free condition is judged.

5. 发明专利

JPH0367219B2 失效
公开(公告)号：JPH0367219B2
公开(公告)日：1991-10-22
申请号：JP6511283
申请日：1983-04-13
申请人： TOKYO GAS CO LTD
发明人： ADACHI HARUHIKO , KAJAMA FUMIO
IPC分类号： G01N27/26 , G01N17/02 , G01N27/04

6. 发明专利

JPS59190647A Corrosion diagnosis apparatus for underground piping 失效
标题翻译：用于地下管道的腐蚀诊断装置
公开(公告)号：JPS59190647A
公开(公告)日：1984-10-29
申请号：JP6511283
申请日：1983-04-13
申请人： Tokyo Gas Co Ltd
发明人： ADACHI HARUHIKO , KAJIYAMA FUMIO
IPC分类号： G01N27/26 , G01N17/02 , G01N27/04
CPC分类号： G01N17/02
摘要： PURPOSE:To measure the corrosion potential, the specific resistivity of soil, the natural corrosion speed, the pipe potential to ground and the grounding resistance simultaneously by connecting suitable instruments to a probe, which has a specimen electrode and a corresponding electrode used also as a reference electrode, a copper-copper sulfate reference electrode and a pipe terminal. CONSTITUTION:Pipe terminal drawing-out lead wires (a), (b) are connected to an underground piping A and a probe 2, which is composed of a specimen electrode 3 and a corresponding electrode 4 used also as a reference electrode and an insulator 3' provided between those two electrodes, is driven into a measured soil. A copper-copper sulphate reference electrode 6 is grounded near the probe 2. The automatic switching equipment 8 switches the respective measurement systems for the corrosion potential, the specific resistivity of the soil, the natural corrosion speed, the pipe potential to ground and the grounding resistance from one system to the other. The corrosion potential is measured by the potential difference between the specimen electrode 3 and the copper-copper sulfate reference electrode 6. The specific resistivity of the soil and the natural corrosion speed are measured by applying a constant current pulse, composed of the superposed high frequency and low frequency currents, between the specimen electrode 3 and the corresponding electrode 4 used also as the reference electrode. The pipe potential to ground and the grounding resistance are measured by utilizing the pipe terminal drawing-out lead wires (a), (b).
摘要翻译：目的：通过将合适的仪器连接到探头，测量腐蚀电位，土壤电阻率，自然腐蚀速度，接地电位和接地电阻，该探头具有样品电极和相应的电极，也用作参比电极，铜 - 硫酸铜参比电极和管端子。构成：管端子引出线（a），（b）连接到地下管线A和探针2，该探针2由试样电极3和也用作参考电极的对应电极4和绝缘体 3'设置在这两个电极之间，被驱动到测量的土壤中。铜 - 硫酸铜参考电极6在探针2附近接地。自动切换设备8将腐蚀电位，土壤电阻率，自然腐蚀速度，对地的管电位和接地的各个测量系统切换从一个系统到另一个系统的阻力。腐蚀电位通过样品电极3和铜 - 硫酸铜参比电极6之间的电位差来测量。土壤的电阻率和自然腐蚀速度通过施加恒定电流脉冲来测量，该恒定电流脉冲由叠加的高频和低频电流之间，在样品电极3和对应的电极4之间也用作参考电极。通过使用管端子引出线（a），（b）测量接地电位和接地电阻。

7. 发明专利

JPS60195460A Insulating state deciding device of pipe 失效
标题翻译：绝缘状态决定管道装置
公开(公告)号：JPS60195460A
公开(公告)日：1985-10-03
申请号：JP5264184
申请日：1984-03-19
申请人： Riken Keiki Kk , Tokyo Gas Co Ltd
发明人： ADACHI HARUHIKO , SUGIMOTO HIDEO , ISHIZUKA MASAHIRO
IPC分类号： G01R27/02 , G01N27/20 , G01R27/08
摘要： PURPOSE: To know the insulating state of a pipe by applying a high frequency constant-voltage power source and measuring a current flowing between buried and exposed pipes, a current flowing to an insulating joint of both the pipes, a current between an electric conductive ground pole and the buried pipe, and a voltage between a collating ground pole and the buried pipe, respectively.
CONSTITUTION: A current I
1 flowing in case when a signal has been applied from a high frequency constant-voltage power source 9 through a reference resistance 11, between a buried pipe side electric conductive terminal 5 and an exposed pipe side electric conductive terminal 4 is measured by a high frequency ampere meter 12, and also a current I
2 flowing through an insulating joint 3 is measured by a clamp type current sensor 13 and an AC current measuring circuit 14. Also, a current I
3 flowing by applying a signal from the power source 9 through the resistance 11, between an electric conductive ground pole 8 and the terminal 5 is measured by the ampere meter 12, and also a response voltage V
3 between a collating ground pole 7 and a buried pipe side detecting terminal 6 is measured by a high input impedance type high frequency voltmeter 15. In this way, an insulating failure part of a buried pipe 1, an exposed pipe 2 and a joint 3 can be discriminated.
COPYRIGHT: (C)1985,JPO&Japio
摘要翻译：目的：通过施加高频恒压电源并测量在埋管和暴露管之间流动的电流来了解管道的绝缘状态，流入两管的绝缘接头的电流，导电地之间的电流极和埋管，以及分拣接地极和埋管之间的电压。结构：在埋地管侧导电端子5和暴露管侧导电端子4之间测量从高频恒压电源9通过参考电阻11施加信号的电流I1被测量通过高频电流计12，并且通过钳位电流传感器13和AC电流测量电路14测量流过绝缘接头3的电流I2。而且，通过施加来自电源的信号流动的电流I3 通过电阻11，通过电流表12测量导电接地极8和端子5之间的电压，并且通过高电平测量对置接地极7和埋管侧检测端子6之间的响应电压V3 输入阻抗型高频电压表15.这样，可以区分掩埋管1的绝缘故障部分，暴露管2和接头3。

8. 发明专利

JPS62285059A NON-DESTRUCTIVE MEASURING APPARATUS FOR DEPTH OF GRAPHATIC CORROSION OF CAST IRON PIPE 失效
公开(公告)号：JPS62285059A
公开(公告)日：1987-12-10
申请号：JP12736386
申请日：1986-06-03
申请人： TOKYO GAS CO LTD
发明人： ADACHI HARUHIKO , OGUCHI NORITAKE , MASUDA TOMONORI
IPC分类号： G01N27/90
摘要： PURPOSE:To measure the depth of corrosion into a cast iron pipe in a non- destructive manner, by paring a table against which a detection output as obtained from an LC oscillation circuit is checked when a coil of the oscillation circuit used as sensor is brought into contact with the cast iron pipe. CONSTITUTION:An oscillation circuit 10 is determined by a coil 10a used as sensor, other resistances and a capacitor 10b and oscillates a fixed oscillation frequency. When this sensor is put on a sound part and a part to be inspected to produce an oscillation output, a detection circuit 20 detects and smoothes changes in the amplitude of the oscillation circuit 10 as DC voltage and an A/D converter 30 converts an output of the detection circuit 20 into digital from analog. A CPU40 judges the material of the case iron pipe from an output of the detection circuit for the sound part at the initialization according to a flowchart and during the measurement,it computes the depth of graphatic corrosion utilizing a material-wise detection output table stored in an internal memory and the results are displayed 50. This enables the measurement of the depth of corrosion into a cast iron pipe non-destructively in a short time.

9. 发明专利

JPS60195461A Method and device for measuring joint resistance of insulating joint 失效
标题翻译：用于测量绝缘接头的接合电阻的方法和装置
公开(公告)号：JPS60195461A
公开(公告)日：1985-10-03
申请号：JP5264284
申请日：1984-03-19
申请人： Riken Keiki Kk , Tokyo Gas Co Ltd
发明人： ADACHI HARUHIKO , SUGIMOTO HIDEO , ISHIZUKA MASAHIRO
IPC分类号： G01R27/02 , G01N27/20 , G01R27/08
摘要： PURPOSE: To measure a joint resistance of a pipe by means of non-cutting, by deriving the joint resistance from a current value flowing by applying an AC current to an exposed pipe and a buried pipe insulated by an insulating joint, and a voltage value applied between the upstream side and the downstream side of the insulating joint.
CONSTITUTION: An AC signal is applied to a buried pipe 1 side and an exposed pipe 2 side into which an insulating joint 3 has been inserted, and only a current flowing through the joint 3 is measured by a clamp type current sensor 7 for converting an alternating field of the periphery of the joint 3 to an induced voltage, and an AC current measuring circuit 8. Also, at the same time, an AC voltage is applied to an exposed pipe side electric conductive terminal 4 and a buried pipe side electric conductive terminal 5 for holding an electric connection in the upstream side and the downstream side, respectively, of the joint 3 and measured by an AC voltmeter 10. Subsequently, a resistance value is measured by deriving the quotient obtained by dividing a joint up- and down-stream voltage value 14 by a joint passing current value 13, by an arithmetic circuit 11 and an indicator 12. In this way, a resistance of the joint installed in the pipe can be measured directly, easily and exactly in a state the pipe remains installed.
COPYRIGHT: (C)1985,JPO&Japio
摘要翻译：目的：通过非切割来测量管道的接头电阻，通过从暴露的管道和通过绝缘接头绝缘的埋管中施加交流电流流动的电流值导出接合电阻，以及电压值施加在绝缘接头的上游侧和下游侧之间。构成：将AC信号施加到埋入管1侧和已插入绝缘接头3的暴露管2侧，并且仅通过夹紧型电流传感器7测量流过接头3的电流，接头3的周边的交变场与感应电压，以及交流电流测量电路8.同时，将AC电压施加到暴露的管侧导电端子4和埋管侧导电端子5，用于分别在接头3的上游侧和下游侧保持电连接并由交流电压表10测量。随后，通过导出通过将接头上下分割而获得的商流量电压值14，通过运算电路11和指示器12.通过这种方式，可以直接，容易地和精确地测量安装在管道中的接头的电阻，如确保管道仍然安装。

10. 发明专利

JPS54149011A Buried metal pipe corrosion prevention method 失效
标题翻译：金属管道腐蚀预防方法
公开(公告)号：JPS54149011A
公开(公告)日：1979-11-21
申请号：JP5635478
申请日：1978-05-12
申请人： Tokyo Gas Co Ltd
发明人： KASAHARA TERUAKI , SATOU TAISAKU , ADACHI HARUHIKO
IPC分类号： G01N27/26 , C23F13/04 , F17D5/06 , G01N17/00 , G01N17/02
CPC分类号： G01N17/02 , C23F13/04
摘要： PURPOSE: To provide a method of preventing corrosion by accurately detecting the condition of corrosion of buried pipes, by making a buried pipe-earth potential measurement using the current interrupter method and at the same by making a measurement of a current density flowing from or into the buried pipe.
CONSTITUTION: When probe 10 and buried pipe 1 are connected by means of lead line 11, current i consisting of anti-corrosion current 6 and stray current 8 flows into probe 10. When probe 10 and buried pipe 1 is disconnected by means of current interrupter 12, current i flowing into probe 10 can be cut completely. For this reason, it is possible to measure the true probe-to-earth potential, excluding iR, by the current interrupter method. Also, when the current flowing between probe 10 and buried pipe 1 is measured by ammeter 13, it is possible to obtain the current density flowing from or into probe 10.
COPYRIGHT: (C)1979,JPO&Japio
摘要翻译：目的：提供一种通过精确检测埋管腐蚀状况来防止腐蚀的方法，通过使用电流断流器方法进行埋地管电位测量，并通过对流过或流入的电流密度进行测量埋管。构成：当探头10和埋管1通过引线11连接时，由防腐蚀电流6和杂散电流8组成的电流i流入探头10.当探头10和埋管1通过电流断路器断开时如图12所示，流入探针10的电流i可以被完全切断。因此，可以通过当前的断续方法测量除iR之外的真实探头对地电位。此外，当通过电流表13测量探头10和埋管1之间流动的电流时，可以获得从探头10流入的电流密度。

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