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1. 发明专利

JPS61190102A STEAM TURBINE 失效
公开(公告)号：JPS61190102A
公开(公告)日：1986-08-23
申请号：JP2943585
申请日：1985-02-19
申请人： HITACHI LTD
发明人： HARAGUCHI MOTONARI , MORIYA SHINICHI
IPC分类号： F01K7/16 , F01D21/00 , F01K7/18 , F01K7/22
摘要： PURPOSE:To prevent droppage of thermal efficiency even for abundant bleed air flow by providing a coupling transmitable/interruptable the rotary power or having the ratchet function in tandem steam turbine. CONSTITUTION:A generator 1, a high pressure turbine 2, a low pressure turbine 3 are arranged in tandem. A coupling 5 enable of transmitting/interrupting operation of rotary power is coupled between said turbines 2, 3. The exhaust gas from the low pressure turbine 3 is led to an air-cooled condenser 4. Said coupling 5 will perform interrupting operation when work is not executed at the final stage or the low pressure turbine. Consequently, droppage of thermal efficiency can be prevented.

2. 发明专利

JPS58201040A Device for diagnosing fault of composite cycle plant shaft 失效
标题翻译：用于诊断复合周期工厂轴承故障的装置
公开(公告)号：JPS58201040A
公开(公告)日：1983-11-22
申请号：JP8321682
申请日：1982-05-19
申请人： Hitachi Ltd
发明人： HARAGUCHI MOTONARI
IPC分类号： G01L3/00 , F16D3/50 , G01L1/00 , G01L3/10 , G01L5/00 , G01M13/02
CPC分类号： G01L3/108
摘要： PURPOSE:To diagnose the fault of flexible coupling precisely by providing the titled device with a stress measuring means, a detecting means and an operating means to compare and diagnose the allowable stress value and working stress value of the flexible coupling and controlling the operation of every apparatus. CONSTITUTION:The titled device to measure the stress of the flexible coupling 106 attached between every apparatus and diagnose the fault by arranging a gas turbine 2, age 3 and a steam turbine 4 on its shaft 101 is provided with a strain gauge 18 for measuring stress on its shaft 101 and the detecting means 19 engaged with the gauge 18. The detecting means 19 inputs a stress signal to operators 21, 22 to calculate the stress applied to the coupling 106 and a comparing means 23 and a deciding means 24 compares and decides the allowable stress values and measuring stress values of the coupling 106 respectively at the time of normal rating operation. In addition, the decision signal is inputted to an operation controlling means 25 engaged with respective apparatuses 2, 4 to control the operating condition.
摘要翻译：目的：通过为标称装置提供应力测量装置，检测装置和操作装置来精确地诊断柔性联轴器的故障，以便比较和诊断柔性联轴器的允许应力值和工作应力值，并控制每个仪器。构成：通过在其轴101上设置燃气轮机2，3和蒸汽轮机4来测量附接在每个装置之间的柔性联轴器106的应力的标准装置，并且通过将燃气轮机2和蒸汽轮机4布置在其轴101上来设置用于测量应力的应变仪18 检测装置19向操作者21,22输入应力信号，以计算施加于联轴器106的应力，比较装置23和判定装置24进行比较和判定分别在正常额定运转时耦合器106的容许应力值和测量应力值。此外，判定信号被输入到与各个装置2,4接合的操作控制装置25，以控制操作状态。

3. 发明专利

JPS562404A STEAM TURBINE CONTROL METHOD 失效
公开(公告)号：JPS562404A
公开(公告)日：1981-01-12
申请号：JP7681379
申请日：1979-06-20
申请人： HITACHI LTD
发明人： HARAGUCHI MOTONARI
IPC分类号： F01D17/00 , F01D3/00 , F01D3/02 , F01D21/00
摘要： PURPOSE:To reduce throttling pressure drops of a steam control valve by controlling a steam flow rate in the nozzles of a turbine and generator sides with other steam control valves where the high pressure first stage nozzle is provided for a plural flow while all the other nozzle ends are provided for a single flow. CONSTITUTION:A high temperature and high pressure steam flow from a boiler is branched to steam lines 31 and 32 through a main choke valve and controlled by 4 sets of steam control valves 33-36, 37-40 respectively, and introduced into a plural flow nozzle box 49. The plural flow nozzle box 49 is provided with a turbine nozzle 50 of the high pressure first stage and a generator nozzle 51. The nozzles 50 and 51 are devided into a plural steam chambers F1 through I and J through M. The above-stated steam is injected into revolving blades 16 and 17 from nozzles 52 and 53. Then the steam flowing in the direction of S and S' is introduced into the high pressure second stage and rotates a rotor 23, doing work. The above method can reduce throttling pressure drops during partial load, and enhance the internal efficiency.

4. 发明专利

JPH01190902A SPEED GOVERNOR FOR STEAM TURBINE 失效
公开(公告)号：JPH01190902A
公开(公告)日：1989-08-01
申请号：JP1260688
申请日：1988-01-25
申请人： HITACHI LTD
发明人： ABE MASAHARU , HARAGUCHI MOTONARI
IPC分类号： F01D17/20 , F01D17/00
摘要： PURPOSE:To improve reliability by installing the pilot valve of a mechanical type governor on the upstream side of the pilot valve of an electronic hydraulic type governor. CONSTITUTION:The pressurized oil supplied into a hydraulic cylinder 28 for opening/closing-driving a steam reducing valve 25 is controlled by an electronic hydraulic type governor consisting of an EHG board. The pilot valve 14 for mechanical governor is installed on the upstream side of the pilot valve 40 of the electronic hydraulic type governor, and when the electronic hydraulic type governor does not operate normally, the mechanical governor is used in substitution. Therefore, the reliability of the speed governor can be improved.

5. 发明专利

JPS5981532A ABNORMALITY DIAGNOSING DEVICE FOR DIAPHRAGM COUPLING OF SHAFT SYSTEM 失效
公开(公告)号：JPS5981532A
公开(公告)日：1984-05-11
申请号：JP19191682
申请日：1982-11-02
申请人： HITACHI LTD
发明人： HARAGUCHI MOTONARI
IPC分类号： G01M99/00 , F01D25/00 , G01B21/16 , G01M13/02
摘要： PURPOSE:To diagnose abnormality of the diaphragm of a diaphragm coupling accurately, and to control the operation condition of respective equipments of a shaft system and improve the safety of the shaft system, by providing a detecting means at a gap part formed between the diaphragm and the coupling. CONSTITUTION:The detecting means 103 which detects the amount of variation due to the displacement of the diaphragm 14 is provided at the gap part 32 between the diaphragm 14 of the diaphragm coupling 102 and a coupling base 11. The detecting means 103 consists of a displacement gauge 21 which measures the relative axial displacement between the diaphragm 14 and coupling boss 11 and a transmitter 22. A displacement signal is inputted to a comparative judging means 105 through an arithmetic means 104, and compared with a predetermined value; and an operation control means 106 performs operation control, such as a load decrease, rotating speed decrease, and turbine tripping, over respective equipments. The amount of variation at the gap part 32 is detected directly, so the resonance state of the diaphragm 14 is detected accurately and speedily.

6. 发明专利

JPS5848826A ABNORMALITY DIAGNOSING DEVICE FOR DIAPHRAGM COUPLING 失效
公开(公告)号：JPS5848826A
公开(公告)日：1983-03-22
申请号：JP14616481
申请日：1981-09-18
申请人： HITACHI LTD
发明人： HARAGUCHI MOTONARI , IKEUCHI KAZUO
IPC分类号： G01L3/00 , G01M13/02
摘要： PURPOSE:To attain safety management by comparing the stress calculated by inputting a signal outputted from a strain gauge sticked to the surface of a diaphragm with the previously set up allowable stress. CONSTITUTION:A strain signal detected by a strain gauge 27 is superposed to a transmitting wave by an oscillator 16 and transmitted to a receiver 17. The strain signal is taken out from the receiver 17, inputted to an operator 18 to convert the strain into the value of stress and then the converted value is inputted to a comparator 19. The comparator 19 compares a previously set up allowable stress value with the stress value inputted from the operator 18 and, when a discriminator 20 discriminates that the inputted stress value exceeds the allowable stress, a load reducing instruction is sent to an operation controller 21. When another instruction is not received from the discriminator 20, the operation controller 21 controls the output of a generator plant concerned.

7. 发明专利

JPS56115801A COOLING MECHANISM FOR ROTARY SHAFT 失效
公开(公告)号：JPS56115801A
公开(公告)日：1981-09-11
申请号：JP1916380
申请日：1980-02-20
申请人： HITACHI LTD
发明人： HARAGUCHI MOTONARI
IPC分类号： F01D11/02 , F01D5/08
摘要： PURPOSE:To effectively cool the inlet section of an intermediate pressure turbine by a method wherein a steam passage leading into the inlet steam chamber of the intermediate pressure turbine is provided at the middle part of a shaft packing during variable pressure operation of the steam turbine. CONSTITUTION:A high pressure turbine and an intermediate pressure turbine are constructed into an integral body. From a high pressure first stage, a packing leak 12 flows through an intermediate packing 3. The high temperature packing leak 12 flows out through steam passages 10, 11 into a reheat steam chamber 4. Also a reheat steam is introduced into the diaphragm packing 19 of an intermediate pressure first stage. Thus, the high temperature intermediate packing leak 12 at the partial load operation of the steam turbine operated under variable pressure is not flowed into a wheel section 6 of the intermediate pressure 1st stage and as a result the inlet section of the intermediate turbine is effectively cooled.

8. 发明专利

JPS60175901A HORIZONTAL TYPE MOISTURE SEPARATOR 失效
公开(公告)号：JPS60175901A
公开(公告)日：1985-09-10
申请号：JP3025784
申请日：1984-02-22
申请人： HITACHI LTD
发明人： HARAGUCHI MOTONARI , YAMAGUCHI HIROSHI
IPC分类号： F22B37/26

9. 发明专利

JPS5557607A COOLING STRUCTURE FOR ROTARY SHAFT OF STEAM TURBINE 失效
公开(公告)号：JPS5557607A
公开(公告)日：1980-04-28
申请号：JP12849378
申请日：1978-10-20
申请人： HITACHI LTD
发明人： HARAGUCHI MOTONARI
IPC分类号： F01D25/12
摘要： PURPOSE:To improve the cooling effect of the rotary shaft and wheel by providing a fin on the wheel face located between the balancing holes. CONSTITUTION:Cooling steam 6 to cool the rotor 2 flows to the inlet of the second balancing hole 15 provided in the wheel 5 through the cooling steam pipe 11. On the other hand, steam which leaks from the main flow and runs from the outlet of nozzle bottom to the center of rotor flows in the first balancing hole 14 principally because of the presence of the front route fin 16 and passes through the wheel 5. The cooling steam passes through the second balancing hole 15 due to the action of fin. Thus the cooling steam is heated very little by leaking steam of high temperature at the route fin.

10. 发明专利

JPS54153904A COOLING MECHANISM FOR ROTOR OF REHEATED STEAM TURBINE PLANT 失效
公开(公告)号：JPS54153904A
公开(公告)日：1979-12-04
申请号：JP6225778
申请日：1978-05-26
申请人： HITACHI LTD
发明人： HARAGUCHI MOTONARI
IPC分类号： F01D11/00 , F01D5/08 , F01D11/06 , F01D25/12
摘要： PURPOSE:To improve the cooling effect of a rotor by controlling the packing leak steam amount of a reheated steam turbine. CONSTITUTION:A portion of the leak steam which leaks from each exit part of the first stage stationary vanes and moving vanes of a high pressure turbine 2 and passes to the reheating turbine 3 side through a shaft packing 5, is fed to the inlet part of the reheating turbing 3 through the blow-down steam system 27. The residual leak steam, after passing through the shaft packding 5, passes through the system 8 of the high pressure turbine 2 and the low temperature steam passage 25, and is mixed with the low temperature steam from an introducing port 25a, and the rotor of the reheating turbine 3 is cooled. At this time, the amount of low temperature steam and the ejection amount of leak steam are controlled by adjusting the throttle ratio of the throttle machanisms 26 and 28 of the low temperature steam passage 25 and the blow-down steam path 27 respectively, and the cooling steam is controlled at the optimum temperature and flow-rate for rotor cooling.

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