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1. 发明专利

JPH01117904A COMBINED POWER GENERATION METHOD 失效
公开(公告)号：JPH01117904A
公开(公告)日：1989-05-10
申请号：JP27305787
申请日：1987-10-30
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： UEMATSU MASAYUKI
IPC分类号： F01K23/10
摘要： PURPOSE:To minimize the rise-up period from the partial load to the rated load by connecting a gas turbine and a waste heat recovery boiler between a plurality of axles and leading part of exhaust gas of a gas turbine into the waste heat recovery boiler connected to a different axle. CONSTITUTION:When a primary axle is operated, the inlet guide vane 1 of a primary axle is maintained at a specified angle and each of an exhaust damper 6, a gas turbine outlet damper 3 and a primary to secondary axle communication vane 5 is closed completely. On the other hand, before the secondary axle is operated, a gas turbine outlet damper 4 at the side of the secondary axle is closed completely and the communication vane 5 is opened gradually. When the secondary axle is operated, an exhaust damper 7 at the side of the secondary axle is opened completely and the gas turbine 9 is started. Then the communication vane 5 is closed completely, the gas turbine outlet damper 4 is opened and the exhaust damper 7 is closed completely.

2. 发明专利

JPS56167803A WARMING UP APPARATUS FOR STEAM TURBINE 失效
公开(公告)号：JPS56167803A
公开(公告)日：1981-12-23
申请号：JP7015380
申请日：1980-05-28
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： UEMATSU MASAYUKI
IPC分类号： F01K23/10 , F01D25/10
摘要： PURPOSE:To shorten the starting time of the plant while improving the efficiency thereof by warming up a steam turbine in starting thereof with a hot air blower provided at an outlet of a boiler in a steam-gas turbine combined cycle plant. CONSTITUTION:A hot air blowe 14 combining a heater and blower is provided at an outlet section of a boiler (not illustrated). In order to switch hot air to steam and vice versa, a hot air inlet valve 15 and a boiler outlet valve 16 are provided at the inlet of the boiler and a condenser inlet valve 17 and a hot air relief valve 18 are at the inlet of a condenser (not illustrated). At the start up, the inlet valve 15 and the relief valve 18 are opened while the outlet valve 16 and the condenser inlet valve 17 are closed and a hot air is sent from the hot air blower 14 to warm up various parts of the steam turbine 9. After the warming up, the hot air blower 14 is stopped and the steam from the boiler is let pass through the condenser 10. Thus, the parallel operation of starting a gas turbine and warming up the steam turbine 9 can reduce the plant starting time substantially.

3. 发明专利

JPS55114858A GAS TURBINE FUEL CONTROLLING SYSTEM 失效
公开(公告)号：JPS55114858A
公开(公告)日：1980-09-04
申请号：JP2288479
申请日：1979-02-26
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： UEMATSU MASAYUKI , SAITOU TADAYOSHI , ADACHI SHIGEKI , AMAHI YASUHIRO
IPC分类号： F02C9/36 , F02C9/32
摘要： PURPOSE:To repress velocity increase in a gas turbine as well as to make it possible to perform favorable control for responsibility to the velocity at the time of interrupting the load by making fuel demand signal in such a way that at the time of interrupting the load, fuel control signal from a velocity/load controller is divided by velocity. CONSTITUTION:In the structure that opening degree of a bypass valve 8 juxtaposed to a fuel pump 9 to supply fuel to a gas turbine driven by another gas turbine (unshown in the figure) is controlled in response to deviation between fuel flow rate demand signal GD and fuel flow rate signal G1 by a detector 10, fuel control signal GC obtained from outputs of a start-up controller 1, a temperature controller 2 and a velocity/load controller 3 through a minimum value selector 4 is conducted through a change-over switch 11 to a subtractor 12. In the subtractor 12, the signal GC is subtracted by output of velocity detecting signal, whose output is added with output from a subtractor 5 by an adder 14. The output obtained by this is made to be added to a subtractor 15 for taking deviation of fuel flow rate.

4. 发明专利

JPS55114859A GAS TURBINE FUEL CONTROLLER 失效
公开(公告)号：JPS55114859A
公开(公告)日：1980-09-04
申请号：JP2288579
申请日：1979-02-26
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： UEMATSU MASAYUKI , SAITOU TADAYOSHI , IWAMIYA KENJI
IPC分类号： F02C9/36 , F02C9/32
摘要： PURPOSE:To properly maintain controls of fuel flow rate in spite of the number of rotation in a gas turbine by providing a means of compensating gains of a regulator to regulate opening degree of a bypass valve juxtaposed to a fuel pump in inverse proportion to the number of rotation in the gas turbine. CONSTITUTION:A fuel controller controls opening degree SBV of a bypass valve 3 by a proportional integral controller 2 so that fuel flow rate signal GL from a fuel flow rate detector 5 can correspond to fuel flow rate demand signal GD from a gas turbine controller 1. Here, additional installation includes a turbine velocity detector 7, and a subtractor 6 to subtract fuel flow rate deviating signal DELTAG from output of this detector 7. And opening degree of the bypass valve 3 is controlled by output of the controller 2 in response to output of the subtractor 6. By doing so, gains of opening degree control in a split valve 3 compensate DELTAG which is input of the controller 2 so as to be inversely proportional to the number of rotation in the turbine, to constantly stabilize loop gains.

5. 发明专利

JPS55114857A GAS TURBINE FUEL FLOW RATE CONTROLLER 失效
公开(公告)号：JPS55114857A
公开(公告)日：1980-09-04
申请号：JP2288379
申请日：1979-02-26
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： SAITOU TADAYOSHI , UEMATSU MASAYUKI
IPC分类号： F02C9/36 , F02C9/32
摘要： PURPOSE:To make it possible to control stable fuel flow rate by providing a means of compensating the opening degree of a bypass valve juxtaposed to a fuel pump like feed forward through fluctuations of pressure on the inlet side and pressure on the outlet side in the fuel pump. CONSTITUTION:A fuel flow rate controller to a combustor 2 provided on a gas turbine 6 multiplies velocity signal N from a velocity detector 10 on fuel control signal SD by a main controller 9 with use of a multiplier 11 in a search for fuel flow rate demand signal GD according to which opening degree of a bypass valve 4 is controlled. In this case, the constitution provides pressure detectors 15, 16, a subtractor 17 to input those outputs, and an imperfect differentiator 18 to generate precedent opening degree compensating signal SF for precedently compensating opening degree of a valve 4 at the time of fluctuating from the outputs. Besides, additional provision includes a constant setter 19 to set 1 for effectively working the compensating signal SF, a subtractor 20, and a divider 21 for seeking for opening degree demand signal SC.

6. 发明专利

JPS519244A 失效
公开(公告)号：JPS519244A
公开(公告)日：1976-01-24
申请号：JP8015774
申请日：1974-07-15
申请人： HITACHI LTD
发明人： KAMYA MASANORI , UEMATSU MASAYUKI
IPC分类号： H02H9/06 , H02H9/04 , H04B1/18

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