专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPS6375626A APPARATUS FOR MONITORING TORSIONAL VIBRATION OF ROTARY SHAFT SYSTEM 失效
公开(公告)号：JPS6375626A
公开(公告)日：1988-04-06
申请号：JP22143486
申请日：1986-09-19
申请人： KANSAI ELECTRIC POWER CO , MITSUBISHI HEAVY IND LTD
发明人： KATSUYAMA YOSHIAKI , MITSUYAMA YOSHIAKI , KAWAMOTO KAZUO
IPC分类号： G01H1/10 , G01H17/00
摘要： PURPOSE:To enhance the monitoring accuracy of the fatigue life of each part of a rotary shaft system, by providing a rotary component noise removing means for calculating the sum total average of the torsional vibration signal corresponding to one revolution of a rotary shaft. CONSTITUTION:The torsional vibration angular displacement signal 20 detected by the torsional vibration angular displacement meter of a rotary shaft system torsional vibration monitor apparatus is stored in the address of a memory device 22 controlled by a rotary pulse 21 and the difference between the stored data and the previous data stored in the above mentioned address is calculated by a subtractor 23. This difference is integrated by an integrator 24 and divided by the data score of one revolution of the shaft by a divider 25 to be outputted. The output 26 is inputted to a coefficient multiplier and the noise of the component integer-times the number of rotations is perfectly removed to make it possible to accurately estimate torsional vibration stress and the monitoring accuracy of the fatigue life of each part of the rotary shaft system can be enhanced.

2. 发明专利

JPS6370126A APPARATUS FOR MONITORING TORSIONAL VIBRATION OF ROTARY SHAFT SYSTEM 失效
公开(公告)号：JPS6370126A
公开(公告)日：1988-03-30
申请号：JP21278286
申请日：1986-09-11
申请人： KANSAI ELECTRIC POWER CO , MITSUBISHI HEAVY IND LTD
发明人： KATSUYAMA YOSHIAKI , MITSUYAMA YOSHIAKI , KAWAMOTO KAZUO
IPC分类号： G01H1/10 , G01H17/00
摘要： PURPOSE:To prevent the trouble of the expansion or divergence of a low frequency component, by a method wherein a torsional vibration signal is transformed to a frequency region by Fourier transformation to be integrated in said region and subsequently transformed to modal displacement response at every mode by Fourier inverse transformation. CONSTITUTION:The cosine function and sine function from a trigonometric function generator 22 controlled by a timer 21 and input data 20 are respectively multiplied by multipliers 23a, 23b and the outputs thereof are inputted to adders 24a, 24b. The outputs of the adders 24a, 24b are inputted to subtractors 26a, 26b and divided by a constant in dividers 25a, 25b. The outputs of the dividers 25a, 25b are inputted to the subtractors 26a, 26b and the outputs of the subtractors 26a, 26b are inputted to the adders 24a, 24b as the adder inputs of the next timing and also inputted to multiplier-dividers 27a, 27b to be divided by aimed vibration frequency and the obtained values are multiplied by the previous sine and cosine functions and the obtained results are synthesized by a subtracting synthesizer 28 and outputted.

3. 发明专利

JPS5872745A DEVICE FOR MONITORING TORSIONAL VIBRATION OF ROTARY SHAFT SYSTEM 失效
公开(公告)号：JPS5872745A
公开(公告)日：1983-04-30
申请号：JP17098081
申请日：1981-10-26
申请人： KANSAI ELECTRIC POWER CO , MITSUBISHI HEAVY IND LTD
发明人： YAMADA MITSUHIRO , NISHIOKA NORIAKI , NAKAYA ISAMU , MITSUYAMA YOSHIAKI
IPC分类号： F01D25/04 , F16F15/02
摘要： PURPOSE:To surely and appropriately detect self-induced vibration caused by the insertion of a series capacitor into a power transmission line, by effecting monitoing in terms of the relation between the vibration and the stress of a rotary shaft system in an optional position. CONSTITUTION:A high and a low pressure turbines 1 are coupled to an electricity generator 2 so that their shafts constitute a rotary shaft system Z. A torsional vibration detector is composed of a toothed ring 11, a pickup 12 and a torsional vibration meter 13. A separator is composed of a first filter 14 and band-pass filters 15, 15' so that only mode components whose frequencies are among the natural frequencies of the rotary shaft system Z and are lower than the commercial frequency of the electricity generator 2 are allowed to pass. A unit for calculation for different modes is composed of multipliers 16, 16' and setting units 17, 17' to determine the values of stress in an optional position for the mode components. Comparators 19-21, 19'-21' compare the values of stress with values set in setting units 22-24, 22'-24'.

4. 发明专利

JPS5822925A TWIST VIBRATION MONITORING METHOD OF ROTARY SHAFT 失效
公开(公告)号：JPS5822925A
公开(公告)日：1983-02-10
申请号：JP12161181
申请日：1981-08-03
申请人： KANSAI ELECTRIC POWER CO , MITSUBISHI HEAVY IND LTD
发明人： YAMADA MITSUHIRO , NISHIOKA NORIAKI , MITSUYAMA YOSHIAKI
IPC分类号： G01M99/00 , G01H1/00 , G01H1/10
摘要： PURPOSE:To eliminate a calculation error of fatigue life consumption of a rotary shaft system, by directly measuring the twist vibration in an optional position of the rotary shaft system to be estimated, and comparing said measured value with an estimated value. CONSTITUTION:Twist vibration is measured at plural fixed positions of a rotary shaft 4 system, and by use of the measured torsion vibration, twist vibration in other optional position of the rotary shaft system is estimated, and from the estimated twist vibration, fatigue life consumption in an optional position is derived. Subsequently, twist vibration generated in one position at least in the optional position is measured, and is compared with twist vibration in an estimated position. Also, when an absolute value of a difference of these 2 values has exceeded a prescribed value, no operation of fatigue life consumption is executed, by which a calculation error of the fatigue life consumption is eliminated.

5. 发明专利

JPS5543464A ROTATING SHAFT TWIST VIBRATION MONITOR DEVICE 失效
公开(公告)号：JPS5543464A
公开(公告)日：1980-03-27
申请号：JP11720578
申请日：1978-09-22
申请人： MITSUBISHI HEAVY IND LTD , KANSAI ELECTRIC POWER CO
发明人： SHIMA ICHIJI , YAMAMOTO TATSUO , YOSHIBAYASHI SHIGERU , TEJIMA YASUSHI , HIZUME AKIO , IKI TETSUO , YAMAMOTO TAKASHI , KANAMORI KIYOUZOU , MITSUYAMA YOSHIAKI , TANAKA SHIGEO
IPC分类号： G01H1/10
摘要： PURPOSE:To carry out the effective monitoring by a few devices by estimating the return vibration at an arbitrary position from the twist vibration of the rotating shaft system determined at a fixed position. CONSTITUTION:In the detecting device 7 for the twist vibration of the rotating shaft by using the turning gear mounted at a fixed position of the turning shaft and the like communicating between the generator and the low and the high turbins, there are connected successively the memmory device 8, Fourier converter 9, multiplier 10, the reversed Fourier converter 11, a limiting value detector 12, switching device 13, computer 14, indicator 15, recorder 16. Thus, the twist vibration for a fixed time detected at the fixed place of the rotating shaft system is divided every micro time unit and memorizes as a time system data and thereafter Fourier converted into the frequency row data and multiplied by the relative value of the vibration at a fixed position and the vibration at an arbitrary position of the rotating shaft system every frequency to be a frequency row data at an arbitrary position. Thereafter, it is reversed Fourier converted into the time system data of the twist vibration at the arbitrary position and based upon the data, the fatigue and life consumption is computed and indicated and recorded.

6. 发明专利

JPS6375625A APPARATUS FOR MONITORING TORSIONAL VIBRATION OF ROTARY SHAFT SYSTEM 失效
公开(公告)号：JPS6375625A
公开(公告)日：1988-04-06
申请号：JP22143386
申请日：1986-09-19
申请人： KANSAI ELECTRIC POWER CO , MITSUBISHI HEAVY IND LTD
发明人： KATSUYAMA YOSHIAKI , MITSUYAMA YOSHIAKI , KAWAMOTO KAZUO
IPC分类号： G01H1/10 , G01H17/00
摘要： PURPOSE:To accurately estimate torsional vibration stress, by storing the torsional vibration signal of a rotary shaft having a plurality of gears corresponding to one revolution and subtracting a memory value from the torsional vibration signal in the timing of the rotary pulse of a rotary shaft system. CONSTITUTION:Gears 5a, 5b, 5c are arranged on a rotary shaft system constituted of a high pressure turbine 1, a low pressure turbine 2, a turbine dynamo 3 and the shaft 4 connecting these elements and, further, a gear 5d for detecting the one revolution/one pulse of the rotary shaft is provided. The outputs of torsional vibration angular displacement meters 5a, 5b immediately before the parallel operation of the dynamo are stored in memories 20a, 20b on the basis of an one revolution/one pulse signal as reference and the angular displacement data stored are successively subtracted from the outputs of the displacement meters 7a, 7b on the basis of the one revolution/one pulse signal as reference by subtractors 22a, 22b. The subtraction results are inputted to coefficient multipliers 8a, 8b, 9a, 9b and torsional vibration stress can be accurately estimated.

7. 发明专利

JP2001003783A SYSTEM AND METHOD FOR CONTROLLING AMOUNT OF FUEL FED TO EXTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2001003783A
公开(公告)日：2001-01-09
申请号：JP17541099
申请日：1999-06-22
申请人： MITSUBISHI HEAVY IND LTD
发明人： KATAOKA YOICHI , NISHINO HIROSHI , MITSUYAMA YOSHIAKI , HOSOKAWA TADASHI
IPC分类号： F02D45/00 , F02D41/04
摘要： PROBLEM TO BE SOLVED: To properly control an internal combustion engine and to improve the efficiency of an internal combustion engine. SOLUTION: A fuel feed amount control system FCS for an internal combustion engine controls an amount of fuel fed to a diesel engine D to rotationally drive a crank shaft S. In this case, this system comprises a rotation component measuring device 1 to measure the true rotation speed V (t) and a twist angle θof the crank shaft S; an output computer 23 to calculate an actual output generated by a diesel engine D based on the true rotation speed V (t) and the twist angle θ measured by the rotation component measuring device 1; a load setter 24 to set a demand output generated by the diesel engine D; and a control device 25 to set an amount of fuel fed to the diesel engine D based on an actual output calculated by the output computer 23 and a demand output set by the load setter 24.

8. 发明专利

JP2000283891A DEVICE FOR MEASURING ROTATION COMPONENT OF ROTATION AXIS AND METHOD FOR ITS MEASUREMENT 失效
公开(公告)号：JP2000283891A
公开(公告)日：2000-10-13
申请号：JP8636999
申请日：1999-03-29
申请人： MITSUBISHI HEAVY IND LTD
发明人： NISHINO HIROSHI , MITSUYAMA YOSHIAKI
IPC分类号： G01B21/22 , F02B77/08 , F02D45/00 , G01D5/245 , G01H1/10 , G01M13/00
摘要： PROBLEM TO BE SOLVED: To prolong the life of a drive source and improve efficiency by calculating the true rotational speed or the torsion vibration component of a rotation axis based on an actual rotational speed at a plurality of locations that have been measured by a rotational speed measurement means. SOLUTION: The device is provided with a rotational speed measurement means 2 and a rotational component operation means 20. The rotational speed measurement means 2 is composed of a first measurement part 3 for calculating a first actual rotational speed V1(t) at a first measurement point L1 that has been set to the rotational axis S based on a first period T1 required for rotating a rotational axis S at a specific angle, and a second measurement part 4 for calculating a second actual rotational sped V2 at a second measurement point L2 based on a second period T2 for rotating rotational axis S at a specific angle at the second measurement point L2 of the rotational axis S separated from the first measurement point L1. The rotational component operation means 20 calculates a true rotational speed V(t) and a torsion vibration component y(t) based on the first actual rotational speed V1 and the second actual rotational speed V2.

9. 发明专利

JPH10102775A DAMPING DEVICE OF MULTIPLE-STAGE BOOM 失效
公开(公告)号：JPH10102775A
公开(公告)日：1998-04-21
申请号：JP26051296
申请日：1996-10-01
申请人： MITSUBISHI HEAVY IND LTD
发明人： MITSUYAMA YOSHIAKI , SHIBATA MASAAKI , YOSHIDA TADASHI
IPC分类号： E04G21/04
摘要： PROBLEM TO BE SOLVED: To effective damp the vibration of a boom tip of a multiple-stage boom. SOLUTION: In a damping device of a multiple-stage boom, acceleration detectors of the number of the vibration mode to be separated (e.g. two) are installed on the multiple-stage boom provided with a hydraulic cylinder for damping. The acceleration detection signals Xa , Xb by the acceleration detectors are multiplied by the constants Ka , Kb to be determined by the primary vibration mode by multipliers 23a, 23b, and the multiplied values are added to each other by an adder 25, and further multiplying the control transfer characteristic to be determined between the modal response of the primary vibration mode of the damping hydraulic cylinder. The output signal of the multiplier 20 and the displacement signal (d) of the damping hydraulic cylinder are added to each other by the adder 21, and the addition is multiplied by the servo amplification gain to obtain the servo valve control signal (c). The boom on the tip is swung in the direction to reduce the vibration of the boom tip by operating the damping hydraulic cylinder by the servo valve control signal (c).

10. 发明专利

JPH08128500A DYNAMIC VIBRATION ABSORBING DEVICE 失效
公开(公告)号：JPH08128500A
公开(公告)日：1996-05-21
申请号：JP26509194
申请日：1994-10-28
申请人： MITSUBISHI HEAVY IND LTD
发明人： MITSUYAMA YOSHIAKI , YAMAZAKI KOJI
IPC分类号： B63B43/00 , F16F15/02
摘要： PURPOSE: To prevent the breakage due to the fatigue of an elastic member for carrying out the reduction of vibration of a main vibration body without deteriorating the vibration reducing effect, by installing a rail having a traveling groove laid horizontally toward one direction between a supporting board and a weight, and a bearing which supports the weight on the supporting board through the turn in the traveling groove in the rail laying direction. CONSTITUTION: The operation direction of a dynamic vibration absorbing device 1 is the A direction, and a ball bearing 5 is not applied with the resistance in the A direction, and moves along a rail 4 having a V-shaped groove. However, in the B direction perpendicular to the action direction of the dynamic vibration absorbing device 1, the V-shaped groove of the rail 4 forms the resistance, and the ball bearing 5 does not move. Accordingly, a weight 2 vibrates in the A action direction of the dynamic vibration absorbing device 1 according to the vibration characteristic determined by the mass Md and the spring constant Kd of a spring member 3, and the characteristic frequency fd is allowed to accord with the characteristic frequency fA in the direction for reducing the vibration of a main vibration body, and tuning is carried out by varying Md by increasing and reducing the variable weight 2b. Accordingly, the fatigue evaluation is reduced, and the fatigue breakage of the elastic member 3 can be prevented.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式