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1. 发明专利

JPH0296613A APPARATUS FOR DETECTING ABNORMAL INDICATION IN PLANT 失效
公开(公告)号：JPH0296613A
公开(公告)日：1990-04-09
申请号：JP25059688
申请日：1988-10-03
申请人： MITSUBISHI HEAVY IND LTD , IDEMITSU KOSAN CO
发明人： ARAYA TOSHIHIKO , FUNAKOSHI RYOHEI , KASEDA SHIGERU , TAKAHASHI KOICHI
IPC分类号： G01D1/18 , G01D21/00 , G01L19/12
摘要： PURPOSE:To obtain an apparatus which detects the abnormal operating state of a plant in an early stage and issues highly reliable warning with less erroneous reporting by computing the average value of measured physical quantities in a specified time interval at a specified period, and comparing the value with an allowance value. CONSTITUTION:This apparatus is composed of the following devices: a measuring sensors 1 such as a pressure gage and a flowmeter which measure the physical quantities at specified points in a plant; an average value computer 2A which obtains the average value of the measured physical quantities; and a warning generator 3A which processes the output from the computer 2A and the outputs of the sensors 1 as specified and issues warning when the abnormality in the plant is detected. The computer 2A computes the average value of the physical quantities in a time period immediately before at, e.g. every predetermined specified time. In the warning generator 3A, the difference between the physical quantity at the specified point in the plant from the sensor 1 and the average value from the computer 2A is obtained with a subtracting device 6. Whether the obtained difference belongs to the allowance range which is set through an allowance-range setting device between the physical quantity and the average value is located at the outside of the allowance range, the warning is issued from a reporting device 8.

2. 发明专利

JPH04218809A ABNORMALITY DETECTOR FOR CONTROL INSTRUMENT 失效
公开(公告)号：JPH04218809A
公开(公告)日：1992-08-10
申请号：JP8084491
申请日：1991-03-18
申请人： IDEMITSU KOSAN CO , MITSUBISHI HEAVY IND LTD
发明人： KASEDA SHIGERU , TAKAHASHI KOICHI , ARAYA TOSHIHIKO , FUNAKOSHI RYOHEI
IPC分类号： G05B23/02
摘要： PURPOSE:To present an abnormality detector for a control instrument which quickly and accurately detects the abnormality of the control instrument. CONSTITUTION:A deviation E between a set value SV of the control instrument and an actual state value PV is integrated, and an obtained integral value S is compared with a preliminarily set decided value D to detect the abnormality. Simultaneously, the stability against variance and the quickness of detection are secured by check of the change of the set value SV, check of the increase/ reduction of the deviation E, and comparison of an absolute value ¦E X S¦.

3. 发明专利

JPH02187626A PLANT ABNORMALITY DIAGNOSTIC SYSTEM 失效
公开(公告)号：JPH02187626A
公开(公告)日：1990-07-23
申请号：JP808289
申请日：1989-01-17
申请人： MITSUBISHI HEAVY IND LTD , IDEMITSU KOSAN CO
发明人： ARAYA TOSHIHIKO , FUNAKOSHI RYOHEI , KASEDA SHIGERU , TAKAHASHI KOICHI
IPC分类号： G01D1/18 , G01D1/02 , G01D1/16 , G01D21/00
摘要： PURPOSE:To improve the reliability of diagnosis results of a system and to avoid unnecessary diagnosis by obtaining and outputting diagnostic symptoms indicating symptoms of abnormality of a plant or the like correspondingly to the operation condition or the like of the plant and performing abnormality diagnosis based on them. CONSTITUTION:The physical quantity at a specific point of the plant is measured by various sensors 2, and an average value is calculated with a prescribed period by an average value calculator 3. The measured value and the average value are inputted to a comparing means 4 to obtain the difference, and it is discriminated through an allowable range setter 6 by a comparator 7 whether this difference is within an allowable range set based on the average value or not, and the result is outputted as a diagnostic symptom signal to a diagnostic part 8. This part 8 compares it with information for detection of abnormality or the like stored in a knowledge memory 9 to diagnose whether individual hypotheses actually occur or not, and diagnostic results of high reliability are displayed on an output display part 10.

4. 发明专利

JPH0228514A METHOD AND DEVICE FOR DETECTING NOISE DISAPPEARANCE 失效
公开(公告)号：JPH0228514A
公开(公告)日：1990-01-30
申请号：JP2899789
申请日：1989-02-07
申请人： MITSUBISHI HEAVY IND LTD , IDEMITSU KOSAN CO
发明人： TOYODA ICHIRO , ARAYA TOSHIHIKO , KASEDA SHIGERU , TAKAHASHI KOICHI
IPC分类号： G01D1/18 , G01D1/16 , G01D21/00
摘要： PURPOSE:To detect a noise disappearance phenomenon by simple arithmetic operation by generating a specific warning when a counter number exceeds a predetermined threshold value and detecting the disappearance of noise components even if the output signal of a detector varies. CONSTITUTION:The output signal of the detector 1 is stored in a data storage means 3 through a data gathering means 2. Then a next arithmetic means 4 inputs the output signal of a means 2 for a current value and the output signal of a means 3 for a last value used as a past value which is a certain time before among past values stored in a means 3, calculates an absolute difference from a specific expression, and outputs the result A to a counter means 5. Then the means 5 compares the result A with a predetermined set value to increase or clear the counter value. Further, a limiter means 6 compares the output signal C of the means 5 with the predetermined set value and turns on a trigger signal when the signal C is larger than the set value. Then a notifying means 7 notifies the occurrence of the noise disappearance phenomenon when the signal T is on.

5. 发明专利

JP2003314783A Blockage preventing method for conduit for measuring equipment in slurry solution tank, and blockage preventing device 审中-公开
标题翻译：用于在浆液溶液罐中测量设备的管道阻塞预防方法和防止堵塞的装置
公开(公告)号：JP2003314783A
公开(公告)日：2003-11-06
申请号：JP2002121666
申请日：2002-04-24
申请人： Idemitsu Kosan Co Ltd , 出光興産株式会社
发明人： SHIDARA OSAMU , KASAHARA YOSHIO , TAKAHASHI KOICHI
IPC分类号： G01F23/14 , B08B9/02 , B65D90/00 , B65D90/48 , F16L55/24 , F17D1/08 , F17D3/12
摘要： PROBLEM TO BE SOLVED: To provide a blockage preventing method for a conduit for measuring equipment in a slurry solution tank, which effectively prevents the deposition and accumulation of slid materials in the conduit. SOLUTION: The blockage preventing method for preventing the blockage of the conduit 31 as a result of the deposition or accumulation of the solid materials in the conduit 31 communicating between the measuring equipment 3 and an internal of the slurry solution tank 1 comprises a step of supplying a preset amount of gas to the conduit 31, a step of adding a preset amount of liquid to the gas in front of the conduit 31, and a step of filling the conduit 31 with the gas to which the liquid is added. The conduit 31 is filled with the gas wetted by the addition of the liquid for stirring a slurry solution in the conduit 31. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种用于在浆液溶液罐中测量设备的管道的阻止堵塞方法，其有效地防止滑动材料在管道中的沉积和积聚。解决方案：用于防止由于在测量设备3和浆液溶液罐1的内部之间连通的导管31中的固体材料的沉积或积聚而导致的导管31堵塞的堵塞防止方法包括：向导管31供给预定量的气体的步骤，向管道31前方的气体添加预定量的液体的步骤，以及向添加有液体的气体填充导管31的步骤。管道31中填充有通过添加液体润湿的气体，用于搅拌管道31中的淤浆溶液。版权所有（C）2004，JPO

6. 发明专利

JP2002294251A CRACKING METHOD FOR HYDROCARBON POLYMER 失效
公开(公告)号：JP2002294251A
公开(公告)日：2002-10-09
申请号：JP2001095937
申请日：2001-03-29
申请人： IDEMITSU KOSAN CO
发明人： ITO TOSHIO , TAKAHASHI KOICHI , SUMIYOSHI TOMOYUKI
IPC分类号： C08J11/10 , C10G1/10 , C10G11/18
摘要： PROBLEM TO BE SOLVED: To provide a method for efficiently cracking a hydrocarbon polymer in a simple and easy way. SOLUTION: In a method for cracking a hydrocarbon polymer with a fluidized catalytic cracking(FCC) apparatus, a mixture of the hydrocarbon polymer and a hydrocarbon oil selected from among FCC gasoline, a light cracking gas oil, a heavy cracking gas oil, a cracking residue oil, a normal-pressure residue oil, and a desulfurization residue oil is mixed into an FCC raw material oil and supplied to the FCC apparatus.

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