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1. 发明专利

JPH09125987A CONTROL METHOD FOR VARIABLE INLET GUIDE BLADE 失效
公开(公告)号：JPH09125987A
公开(公告)日：1997-05-13
申请号：JP28575195
申请日：1995-11-02
申请人： MITSUBISHI HEAVY IND LTD
发明人： AZUMA KAZUYA , HASEGAWA TOSHIHARU
IPC分类号： F02C7/057
摘要： PROBLEM TO BE SOLVED: To operate a gas turbine air compressor at a temperature level near controlled temperature over a whole outside temperature range by controlling the degree of opening with a tracking control signal due to exhaust gas temperature and blade path temperature, added to an opening degree instruction corresponding to intake temperature, at the time of controlling the variable inlet guide blade of the gas turbine air compressor. SOLUTION: An IGV (variable inlet guide blade) opening degree signal 3s processed with a rated load compensator 7, a multiplier 2 and an opening degree function generator 3 so as to correspond to a rated load, and an IGB opening degree signal 10s processed with an intermediate load compensator 8, a multiplier 9 and a new opening degree function generator 10 so as to correspond to an intermediate load are inputted to a high value selector 4 for selecting a high value. Also, an IGV opening degree instruction signal 11s outputted from an upper limit function generator 11 according to an intake temperature signal so as to correspond to intake temperature, and a signal selected at the high value are inputted to a low value selector 5 for selecting a low value. Then, an ICG tracking control signal 11s resulting from exhaust gas temperature and blade path temperature is added to the low value selection signal, thereby preparing an IGV opening degree instruction 6s.

2. 发明专利

JPH07281706A AUTOMATIC PRECEDING ELEMENT ADDITION/REMOVAL CONTROLLER 失效
公开(公告)号：JPH07281706A
公开(公告)日：1995-10-27
申请号：JP7057194
申请日：1994-04-08
申请人： MITSUBISHI HEAVY IND LTD
发明人： HASEGAWA TOSHIHARU
IPC分类号： F01D19/00 , F02C9/20 , G05B11/32
摘要： PURPOSE:To limit feed forward control after target achievement concerning the automatic preceding element addition/removal controller provided with a preceding control element due to feed forward and correction due to feedback control. CONSTITUTION:An operating terminal 27 is controlled by the feedback control due to a feedback value 21 and the feed forward control due to a preceding control process value 25 and a preceding process target value. A comparator 2 compares the process value 25 with a process target value 1 and sets the addition/removal of the preceding element, a rate of change is calculated based on a previously decided function by an arithmetic part 3, this signal is transmitted to a rate-of-change limiter 4, and the preceding control process value 25 is limited. Therefore, after the target achievement, the feed forward control is limited and only the feedback control is executed so that the unwanted feed forward control can be eliminated.

3. 发明专利

JPH06341330A METHOD FOR CONTROLLING FUEL OF GAS TURBINE 失效
公开(公告)号：JPH06341330A
公开(公告)日：1994-12-13
申请号：JP15289793
申请日：1993-05-31
申请人： MITSUBISHI HEAVY IND LTD
发明人： KAMIDATE FUMIO , HASEGAWA TOSHIHARU , OKAMOTO AKIHIRO
IPC分类号： F02C9/28 , F02C9/40
摘要： PURPOSE:To suppress the fluctuation of the output of a generator by chancing the multi-fuel combustion ratio as the output of the generator is changed under the condition where the flow rate of one kind of the fuel is maintained at constant value in changing from the single-fuel to the multi-fuel combustion when at least two kinds of fuels are exclusively or mixedly burned. CONSTITUTION:In a gas turbine generating plant, two kinds of the main and sub fuel to be supplied from two kinds of the main and sub fuel flow rate control valves 2, 3 is mixed with the air supplied from an air compressor 4 in a burner 1 and combusted. A turbine 5 is rotated by the combustion gas and a generator 6 is driven thereby. At least, a multi-fuel ratio setting device 15 of the main and sub fuel and a fuel distribution controller 16 are arranged, and the main and sub fuel flow rate control valves 2, 3 are controlled thereby. The detected output from a main fuel flow rate measuring device 100 mounted on the main fuel system is at least inputted to a main fuel flow rate controlling/ correcting device 101 mounted on the control device 10, and at the same time, the computed multi-fuel ratio signal is received by the fuel distribution controller 16.

4. 发明专利

JPS61155573A ANCHORING OF COMPRESSION RING OR KNUCKLE IN UNDERGROUND TANK 失效
公开(公告)号：JPS61155573A
公开(公告)日：1986-07-15
申请号：JP27433584
申请日：1984-12-28
申请人： MITSUBISHI HEAVY IND LTD
发明人： HASEGAWA TOSHIHARU , OIKAWA MASAMI
IPC分类号： F17C3/00 , E02D29/045 , E04G21/12 , E04H7/18 , E21D13/00

5. 发明专利

JPH06264761A CONTROLLER FOR GAS TURBINE 失效
公开(公告)号：JPH06264761A
公开(公告)日：1994-09-20
申请号：JP5383893
申请日：1993-03-15
申请人： MITSUBISHI HEAVY IND LTD
发明人： HIROE TAKAHARU , HASEGAWA TOSHIHARU
IPC分类号： F02C7/057 , F02C9/50
摘要： PURPOSE:To provide a controller for a gas turbine which can compensate detection lag of exhaust gas temperature and quickly grasp fluctuation of exhaust gas temperature. CONSTITUTION:Blade pass temperature 21 is measured in the vicinity of the port of a gas turbine 3, measured blade pass temperature 21 is given to an exhaust to an exhaust gas temperature lag compensation means 22, normally existing deviation is removed by in-pass lag so as to pass only temperature fluctuation due to fluctuation of generated amount of energy, and a compensation signal is determined by specific gain of a coefficient multiplier 24 so as to compensate deviation lag of exhaust gas temperature.

6. 发明专利

JPH10194377A METHOD FOR CONSTRUCTION OF DOUBLE SHELL TANK 失效
公开(公告)号：JPH10194377A
公开(公告)日：1998-07-28
申请号：JP35150496
申请日：1996-12-27
申请人： MITSUBISHI HEAVY IND LTD
发明人： SHIMAMOTO NAOKI , KATO SETSUZO , KASHIMA HIDETOSHI , HASEGAWA TOSHIHARU
IPC分类号： B65D88/06 , F17C3/00
摘要： PROBLEM TO BE SOLVED: To ensure sufficient quality of the side wall of an inner tank and to shorten the time necessary for completion by three processes wherein a roof for an outer tank and a roof for the inner tank are assembled and the side wall for the outer tank and the side wall for the inner tank are formed and they are installed on the top part of the side wall of the inner tank. SOLUTION: In the first process, a knuckle plate 4 for an inner tank is assembled and welded on an assembling trestle 51 for the knuckle plate 4. The top part 7A of the roof of the inner tank and the main body 6B of the roof of an outer tank being integrally formed through the ridge ring 5 for the inner and the outer tanks are arranged on the central trestle 52. A roof block 8 for the inner and the outer tanks which is made by integrally connecting the main body 6B of the roof of the outer tank and the main body 7A of the roof of the inner tank is used. In the second process, the side plate of the outer tank and the side plate of the inner tank are carried in and temporarily fixed and positioning before welding, welding, grinding finishing and non-destructive inspection are performed. Thereafter, the side plate of the outer tank and the side plate of the inner tank are installed on the side wall 13 for the outer tank and the side wall 14 for the inner tank. In the third process, the roof 7 for the inner tank is elevated by means of an air raise and the roof 7 for the inner tank is fixed on the top part of the side wall 14 for the inner tank by welding.

7. 发明专利

JPH0921302A DUAL-PURPOSE ELECTRICITY AND STEAM GENERATION CONTROL DEVICE 失效
公开(公告)号：JPH0921302A
公开(公告)日：1997-01-21
申请号：JP16967295
申请日：1995-07-05
申请人： MITSUBISHI HEAVY IND LTD
发明人： HASEGAWA TOSHIHARU
IPC分类号： F01D17/24 , F01K23/10 , F01K23/14 , F02G5/04
摘要： PROBLEM TO BE SOLVED: To provide a dual-purpose electricity and steam generation control device preventing S/T output lagging in AFC operation. SOLUTION: A dual-purpose electricity and steam generation control device has a subtractor for receiving an AFC command signal and a generator output signal, a governor setting device 2 for receiving output from the subtractor, a P-type controller 3 for receiving the output from the governor setting device 2 and an engine revolution speed signal and for sending a control signal to a fuel control valve, and a PI type controller 5 for receiving the output from a pressure setting device 4 and for a signal for pressure in front of a governing valve and for sending a control signal to the governing valve. Adjusting means 6 in AFC operation receives the output from the governor setting device 2 and adds a leading correction signal for preventing a variation in lagging steam turbine output to the output from the PI type controller 5.

8. 发明专利

JPH04299098A CONTROL METHOD FOR COMBINED CYCLE POWER PLANT 失效
公开(公告)号：JPH04299098A
公开(公告)日：1992-10-22
申请号：JP6168191
申请日：1991-03-26
申请人： MITSUBISHI HEAVY IND LTD
发明人： KAMIDATE FUMIO , HASEGAWA TOSHIHARU , ISHIGURO MASAAKI
IPC分类号： H02J3/38 , H02J3/46 , H02P9/00
摘要： PURPOSE:To prevent total stoppage or overload operation of plant by monitoring in-yard or regional independent operating condition of combined power plant and operating only one selected gas turbine generator and stopping operation of other remaining gas turbine generators. CONSTITUTION:A monitor switch 3 turns its own output ON when an output signal 1 of gas turbine generator is higher than 30% of the rating thereof. A monitor switch 4 turns its output ON when an input signal is lower than 10% of the rated output of gas turbine generator. Upon turn OFF of the input signal, an OFF delay timer 5 sustains ON output for 5sec and then turns the output OFF. Upon turn ON of the input signal, an ON delay timer 6 sustains OFF output for 0.5sec and then turns the output ON. When all inputs to an AND 7 are turned ON, output therefrom is turned ON thus turning a gas turbine generator output abrupt decrease signal 8 ON.

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