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1. 发明专利

JPS58176494A CENTRIFUGAL FAN 失效
公开(公告)号：JPS58176494A
公开(公告)日：1983-10-15
申请号：JP5950382
申请日：1982-04-12
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： OOGOSHI YOUICHI , IGAWA KEINOSUKE , AOKI IKUHIDE
IPC分类号： F04D25/02 , F04D29/66
摘要： PURPOSE:To prevent generation of noise of super low speed air flow surely upon the low air volume operation of the fan by a method wherein a coupling means connecting first runner, fixed to a shaft, and the second runner, supported by the shaft through a bearing, is provided in the fan. CONSTITUTION:The runner driving shaft 7 is provided with the first runner 1, fixed thereto, and the second runners 2, 3, both of which are supported thereby through bearings. The first runner 1 and the second runners 2, 3 are connected through clutch plates 4, 5. When the centrifugal fan 15 is operating under a normal load operation, the whole of the runners 16 are rotated to discharge a necessary air volume to the supplying side. When the air volume, used at the supplying side, is reduced, the connection of the coupling means 17 is released in accordance therewith. Accordingly, the discharging air volume may be decreased in the manner as if the width of the blade for the runners 16 is narrowed.

2. 发明专利

JPS5394257A DECREASING METHOD FOR NITROGEN OXIDES CONTENT OF COMBUSTION EXHAUST GAS 失效
公开(公告)号：JPS5394257A
公开(公告)日：1978-08-18
申请号：JP867777
申请日：1977-01-31
申请人： HITACHI LTD
发明人： AZUHATA SHIGERU , KIKUCHI HIDEO , AKIMOTO HIDETOSHI , HISHINUMA TAKAO , ARIKAWA KIJIROU , OOSHIMA RIYOUICHIROU , SASAKI MINORU , AOKI IKUHIDE
IPC分类号： B01D53/56 , B01D53/34 , F23J15/00
摘要： PURPOSE:To decrease the quantity of hydrazine consumption and to attain high denitration efficiency by pouring hydrazine in multistages in reduction of nitrogen oxides contained in exhaust combustion gas by use of hydrazine.

3. 发明专利

JPS5332214A SILENCER FOR GAS TURBINE INLET 失效
公开(公告)号：JPS5332214A
公开(公告)日：1978-03-27
申请号：JP10580076
申请日：1976-09-06
申请人： HITACHI LTD
发明人： AOKI IKUHIDE
IPC分类号： F01N1/24 , F02C7/24
摘要： PURPOSE:To provide a silencer, which is small in size, has excellent silencing effect and is subject to less air resistance loss, by providing a high frequency suction silencer in a concrete suction filter of a volume chamber type disposed on the suction side of a gas turbine.

4. 发明专利

JPS60156937A PROCESSING AND SUPPLYING ROUTE FOR FUEL OIL OF THERMAL PRIME MOVER 失效
公开(公告)号：JPS60156937A
公开(公告)日：1985-08-17
申请号：JP1019284
申请日：1984-01-25
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： HIRANO AKIRA , AOKI IKUHIDE
IPC分类号： F02C7/22 , F02C9/36 , F02M37/00
摘要： PURPOSE:To diminish the cost of equipment, by directly connecting the outlet pipe of a crude oil processing unit to a fuel supply pipe for a prime mover, and attaching a pressure control valve responsive to the oil pressure of the outlet pipe, to a pipe for returning oil from the outlet pipe. CONSTITUTION:A crude oil processing unit 50, which removes impurities from crude oil, is connected to the outlet pipe of a tank 20 for storing the unprocessed crude oil containing the impurities. The outlet pipe of the crude oil processing unit 50 is directly connected to a fuel supply pipe for a prime mover 90. A pressure control valve 62, which is opened or closed in response to the oil pressure of the outlet pipe of the unit 50, is provided in a pipe 70 for returning the oil from said outlet pipe to the storage tank 20. As a result, a tank for storing the processed oil is dispensed with, to simplify the construction of equipment to reduce the cost thereof.

5. 发明专利

JPS52106135A SMOKE STACK SOUND INSULATION DEVICE 失效
公开(公告)号：JPS52106135A
公开(公告)日：1977-09-06
申请号：JP2211676
申请日：1976-03-03
申请人： HITACHI LTD
发明人： SAKAI AKIRA , AOKI IKUHIDE , TATEISHI AKITAKA , HIRAMATSU TSUTOMU
IPC分类号： F01N1/24 , F16L55/02 , F23J11/00 , F23J13/00
摘要： PURPOSE:To reduce noise from steam power plant by providing sound insulating device at the position on the smoke stack where the frequency of noise from exhauster in smoke passage through which exhaust gas from boiler is forced exhausted and the resonance frequency of smoke stack agree.

6. 发明专利

JPH0794884B2 失效
公开(公告)号：JPH0794884B2
公开(公告)日：1995-10-11
申请号：JP8096787
申请日：1987-04-03
申请人： HITACHI LTD
发明人： HIGUMA KATSUTOSHI , AOKI IKUHIDE
IPC分类号： F02C7/00 , F23J11/00

7. 发明专利

JPS63247529A EXHAUST GAS DUCT OF GAS TURBINE 失效
公开(公告)号：JPS63247529A
公开(公告)日：1988-10-14
申请号：JP8096787
申请日：1987-04-03
申请人： HITACHI LTD
发明人： HIGUMA KATSUTOSHI , AOKI IKUHIDE
IPC分类号： F02C7/00 , F23J11/00
摘要： PURPOSE:To eliminate the occurrence of the back flow of exhaust gases in any operating condition of a plurality of gas turbines by a method wherein exhaust gases are joined just after the outlets of exhaust heat recovery boilers and introduced into the lower part of a stack by a dual system duct with a partition plate in the inside and the streams of the exhaust gases are joined together at a pressure-free or negative pressure part near the lower part of the stack. CONSTITUTION:Combustion gas completing the work at a gas turbine 1 passes through an exhaust heat recovery boiler 3 and enters an exhaust duct 4. The duct 4 joins an exhaust gas duct 4 for another gas turbine in one body just after the outlets of the boilers 3 and they enter a dual system duct 5. The duct 5 inside of which is equipped with a partition plate at the center and partitioned into two parts on the right and left sides (or the upper and lower sides). Although a single duct, it is partitioned into two parts inside. Exhaust gas passing through each system joins at a joint part 7 near the lower part of a stack and a joined stream is introduced into a centralized stack 8 and exhausted from the tip into the open air. Thus, each exhaust gas joins at the part 7 as a pressure-free or negative pressure part and each exhaust gas system for the gas turbine has such a function just as if the system is operated as an independent exhaust gas system.

8. 发明专利

JPS5910740A Fuel oil processing system 失效
标题翻译：燃油加工系统
公开(公告)号：JPS5910740A
公开(公告)日：1984-01-20
申请号：JP11982282
申请日：1982-07-12
申请人： Hitachi Eng Co Ltd , Hitachi Ltd
发明人： SHIMANE YASUSHI , YAGINUMA ISAO , AOKI IKUHIDE
IPC分类号： F02C7/22
CPC分类号： F02C7/22
摘要： PURPOSE:To enable fuel which has absorbed moisture and metals during storage to be again processed by connecting a discharge line of a delivery fuel tank for storing cleaned fuel to the intake side line of a fuel oil processing unit. CONSTITUTION:Unprocessed fuel oil is stored in a fuel reservoir tank 3 and cleaned by a processing unit 6 to be stored in a delivery fuel tank 12. Then, it is supplied to a gas turbine through a oil feeding unit 16 and a filter 20. A piping 14 at the delivery fuel tank discharge side is connected to a line at the intake side of the processing unit 6 through a piping 22, a valve 23 and a line provided with a controlling valve 24 so that fuel oil is circulated through a closed line consisting of the processing unit 6 tank 12 line piping 22 processing unit 6.
摘要翻译：目的：通过将用于存储清洁燃料的输送燃料箱的排出管路连接到燃料油处理单元的进气侧管线来使得在储存期间吸收了水分和金属的燃料再次被加工。构成：将未经处理的燃料油储存在储油箱3中，并由处理单元6进行清洗，以储存在输送燃料箱12中。然后，通过供油单元16和过滤器20将其供给燃气轮机。输送燃料箱排出侧的配管14通过配管22，阀23以及设有控制阀24的管线与处理单元6的进气侧的管路连接，使燃料油通过封闭由处理单元6罐12管线22处理单元6组成的管线。

9. 发明专利

JPS54110801A ABSORPTION TYPE SILENCER 失效
公开(公告)号：JPS54110801A
公开(公告)日：1979-08-30
申请号：JP1764178
申请日：1978-02-20
申请人： HITACHI LTD
发明人： TATEISHI AKITAKA , AOKI IKUHIDE , YAMADA SAKAE
IPC分类号： F01N1/24 , G10K11/02 , G10K11/16
摘要： PURPOSE:To prevent clogging of fine powder dust and obviate the decrease in silencing performance by using a silencer comprising sticking a thin film closing each hole on the outside surface of the porous wall of the inner cylinder in a gas atmosphere. CONSTITUTION:In the case of flowing the exhaust gas from a coal firing boiler which becomes a noise source through ducts 1 and exhausting to a chimney 3 through exhaust fan 2, an absorption type silencer 4 is disposed on the way of the ducts 1, whereby silencing is accomplished. A thin film 12 which is capable of isolating the holes 6, 8 from the exhaust gas is stuck on the outside surface of the porous wall of the inside cylinder 5 and the outside surface of the porous wall of the outside cylinder 7 of the silencer 4. Hence, the frequencies accompanied by the exhaust gas arrive at a sound absorbing material 9 through the holes 6, by which their energies are attenuated. In addition, the clogging by fine powder dust may be prevented by the film 12.

10. 发明专利

JPS5289826A BYYPASS DEVICE FOR HIGHHPRESSURE VALVE 失效
公开(公告)号：JPS5289826A
公开(公告)日：1977-07-28
申请号：JP596176
申请日：1976-01-23
申请人： HITACHI LTD
发明人： AOKI IKUHIDE
IPC分类号： F16K3/00 , F01D17/10 , F16K1/02 , F16K3/12 , F16K39/02

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