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1. 发明专利

JPH0281905A FORCED COOLING METHOD FOR STEAM TURBINE AND COOLING DEVICE FOR THE SAME 失效
公开(公告)号：JPH0281905A
公开(公告)日：1990-03-22
申请号：JP23229488
申请日：1988-09-19
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： NAGAI SHINICHI , TAKETOMO MASAKI , KANEDA HIDEAKI , SAKAMOTO AKIHISA
IPC分类号： F01D5/08 , F01D25/12 , F01D25/26 , F01K13/02
摘要： PURPOSE:To improve the cooling efficiency of a high pressure casing and enable shortening of the cooling period by sending a cooling air to a high pressure turbine between the inner casing, and the rotor and outer casing under controlling the flow rate and temperature. CONSTITUTION:The cooling air from an air pump 8 is subjected to temperature regulation in a heater 10 and introduced in a high pressure turbine exhaust pipe by a connecting pipe 19. One of the branched cooling air is passed between an inner casing 1 and a rotor 5 and released to the atmosphere from a main steam stop valve drain pipe 11a through a steam governing valve 11. On the other hand, the cooling air passed through the space a, b rooms between the inner casing 1 and the outer casing 2 is run through a cooling air passing port 2a provided on the outer casing 2 and released to the atmosphere through a cooling air low rate control valve 21. Hence, the high pressure turbine is cooled efficiency from the both inner and outer sides of the inner case 1, and the cooling period can be shortened.

2. 发明专利

JPS61268367A APPARATUS FOR REMOVING METALLIC FOREIGN MATTER FLOWED IN OIL COOLER OF TURBINE LUBRICANT EQUIPMENT 失效
公开(公告)号：JPS61268367A
公开(公告)日：1986-11-27
申请号：JP10823485
申请日：1985-05-22
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： YOSHIHARA NORIO , SAKAMOTO AKIHISA
IPC分类号： B03C1/30 , F01D25/18 , F16N39/06
摘要： PURPOSE:To efficiently recover metal foreign matter mixed, by changing the flow of the oil flowed in an oil cooler along the inner peripheral surface of a barrel body and generating centrifugal force and subsequently contacting the oil with a permanent magnet. CONSTITUTION:When oil enters an oil cooler through an inlet 4, metallic foreign matter receives centrifugal force at first by the flow speed of oil flowing to the outer periphery in a direction (e) and that of oil flowing to the outer periphery in a direction (h) by a buffle 29. At this time, the metallic foreign matter 33 is attracted to the inner surface of an enlarged barrel body 28 through a non-ferrous metallic net 32 by the magnetic force of the permanent magnet 31 attached to the inner surface of the barrel body 28. The oil after the metallic foreign matter 33 was attracted and removed passes through the opening 30a of the flow passage of a rotary plate 30 and flows to an orthogonal direction while meandering between cooling pipes 26 as shown by a stream (k) and flows from the notch part of a partition plate 6a to a partition plate 6b to be cooled. The attracted metallic foreign matter can be easily removed at the time of disassembling for cleaning and repairing.

3. 发明专利

JPS5762905A Lubbricant control system 失效
标题翻译：润滑剂控制系统
公开(公告)号：JPS5762905A
公开(公告)日：1982-04-16
申请号：JP13585580
申请日：1980-10-01
申请人： Hitachi Eng Co Ltd , Hitachi Ltd
发明人： OOTA HIROSHI , SAKAMOTO AKIHISA
IPC分类号： F01K25/10 , F01D25/18
摘要： PURPOSE: To prevent deterioration of a lubricant and secure always the most suitable lubrication film for a bearing by controlling extraction of a working fluid in accordance with the change in the specific gravity of the lubricant in a lubricant system provided with a gas extraction means which is capable of extracting the working fluid such as freon gas mixed in the lubricant.
CONSTITUTION: A lubricant is supplied to each of the bearings for a turbine from a lubricant tank 1 to a pump 4 through a cooling device 6, and it returned to the tank 1 again. At this time, if the turbine is a freon oil turbine, the freon mixes in the lubricant. The lubricant in which freon is mixed is led to a heater 3 by a pump 2, and the temperature of the lubricant is raised by the freon vapor and the freon vapor is extracted in a gas extraction tank. The opening of a feon vapor flow regulating valve 15 is controlled by a specific gravity detecting means which outputs control signal through a temperature comprensating, specific gravity calculating circuit in response to shielding between a light source 10 and photo-bridge 11 by a buoy 9 provided in a measuring tank 8.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：为了防止润滑剂的劣化，并且通过根据设置有气体提取装置的润滑剂系统中的润滑剂的比重的变化控制工作流体的提取来确保轴承的最合适的润滑膜，其是能够提取混合在润滑剂中的氟利昂气体等工作流体。构成：通过冷却装置6向涡轮机的每个用于润滑剂罐1的泵提供润滑剂，再次返回到罐1。此时，如果涡轮机是氟利昂的油轮机，则氟利昂在润滑剂中混合。其中混合有氟利昂的润滑剂通过泵2被引导到加热器3，润滑剂的温度由氟利昂蒸气升高，氟利昂蒸气在气体提取罐中提取。电子蒸汽流量调节阀15的打开由比重检测装置控制，该比重检测装置响应于由提供的浮标9在光源10和光电桥11之间的屏蔽而通过温度升高的比重计算电路输出控制信号在测量罐8中。

4. 发明专利

JPS6165003A Controlling method for turbine in intermediate pressure starting 失效
标题翻译：中压压力起动中的涡轮机控制方法
公开(公告)号：JPS6165003A
公开(公告)日：1986-04-03
申请号：JP18364584
申请日：1984-09-04
申请人： Hitachi Eng Co Ltd , Hitachi Ltd
发明人： NAGAI SHINICHI , KUWAJIMA HIDESUMI , SAKAMOTO AKIHISA
IPC分类号： F01K7/24 , F01D19/00
CPC分类号： F01D19/00
摘要： PURPOSE:To prevent a temperature in a high pressure turbine exhaust hood from rising by instantly increasing a steam quantity flowing into a high pressure turbine more than a quantity for load corresponding to reheat steam pressure in starting the high-intermediate pressure turbine. CONSTITUTION:In the intermediate pressure starting method for a steam turbine comprising of a high pressure turbine 7 and an intermediate pressure turbine 8 driven by a reheat steam which is produced by reheating a steam after used for driving the high pressure turbine, a load is instantly increased from B% to A% (a load corresponding to pressure controlled by a low pressure bypass control valve 15) by quickly opening a steam adjust valve 3. Consequently, an exhaust pressure in the high pressure turbine 7 is increased at a dash above a reheat steam pressure to discharge the steam flowing into the high pressure turbine 7. Thus temperature rise due to windage loss in an exhaust hood can be prevented.
摘要翻译：目的：为了防止高压涡轮机排气罩中的温度瞬间增加流入高压涡轮机的蒸汽量超过与启动高中压涡轮机时的再热蒸汽压力相对应的负载量。构成：在用于蒸汽涡轮机的中压起动方法中，包括高压涡轮机7和由再热蒸汽驱动的中压涡轮机8，所述再热蒸汽是在用于驱动高压涡轮机之后再加热蒸汽而产生的，负荷立即通过快速打开蒸汽调节阀3，从B％增加到A％（对应于由低压旁通控制阀15控制的压力的负荷）。因此，高压汽轮机7中的排气压力高于重新加热蒸汽压力以排出流入高压汽轮机7的蒸汽。因此，可以防止由于排气罩中的风阻损失引起的温度升高。

5. 发明专利

JPH01193006A OPERATION METHOD FOR OIL PUMP 失效
公开(公告)号：JPH01193006A
公开(公告)日：1989-08-03
申请号：JP1699688
申请日：1988-01-29
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： NAGAI SHINICHI , SAKAMOTO AKIHISA
IPC分类号： F01D25/20
摘要： PURPOSE:To aim at optimization of a whole system, in the lube oil supply facility for supplying oil to a steam turbine bearing provided with an emergency oil pump driven by an alternating current electric motor, by supplying lube oil pressure and the oil amount meeting each situation with free changeover of ejecting pressure of the emergency oil pump. CONSTITUTION:On the occasion of turning operation of a steam turbine, an emergency oil pump 3 is operated through a starter 8. Since continuous turning is necessary, a rotating speed changeover device 15 is switched to a high rotating speed side. A battery 7 which is the power source of the emergency oil pump 3, is enabled to make continuous operation of the emergency oil pump 3 by being charged continuously from a normally used A.C power supply 4 and an emergency A.C power supply 5. When the normally used A.C power supply 4 is cut off, the emergency A.C power 5 is made to turn on as a backup, but until the prescribed time for making turning the power on a rotational speed changeover device 15 is switched to a low rotational speed side, and the turbine is stopped in safety as well as power consumption in the battery 7 is reduced.

6. 发明专利

JPS62101808A DEVICE FOR REGULATING BEARING LUBRICATION PRESSURE 失效
公开(公告)号：JPS62101808A
公开(公告)日：1987-05-12
申请号：JP24153985
申请日：1985-10-30
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： SATO KAZUHITO , SAKAMOTO AKIHISA , YOSHIHARA NORIO
IPC分类号： F01D25/20
摘要： PURPOSE:To prevent rise in hydraulic pressure at the outlet of a pressure regulating valve and normalize the pressure of lubricating oil by moving a pilot valve for controlling the hydraulic pressure from the inlet side to the outlet side of said pressure regulating valve, when shifting from the start of a pump to a normal operation. CONSTITUTION:A port 32 from a pressure regulating device E is provided in a secondary pressure regulating valve 8. At the time of starting, the pressure regulating device E introduces a hydraulic pressure which is not reduced, into a piping 26 from a piping 7 and leads it into a piping 27 through an orifice 29 and a safety valve 30, to feed oil into the bottom port D of a pilot housing 20, an accumulator 31, and a pilot valve port A. Then, the oil flows to a port B, moving the pressure regulating valve 8 in the closing direction. On the other hand, when hydraulic pressure rises at the time of starting a pump, the valve body of a pilot valve rises against a spring 23 due to hydraulic pressure from the port D, causing oil to flow to a port G and the port B, to control the secondary side hydraulic pressure of the pressure regulating valve 8.

7. 发明专利

JPS5944486B2 JPS5944486B2 - 失效
公开(公告)号：JPS5944486B2
公开(公告)日：1984-10-30
申请号：JP8437481
申请日：1981-06-03
申请人： Hitachi Ltd
发明人： SAKAMOTO AKIHISA
IPC分类号： F01D11/04 , F01D11/06 , F01D25/22 , F01K25/10
CPC分类号： F01D11/04

8. 发明专利

JPS56131893A FORCED SUPPLY SYSTEM FOR LUBRICATING OIL 失效
公开(公告)号：JPS56131893A
公开(公告)日：1981-10-15
申请号：JP3407880
申请日：1980-03-19
申请人： HITACHI LTD
发明人： SAKAMOTO AKIHISA , ABE MASAHARU
IPC分类号： F16N7/40
摘要： PURPOSE:To discharge oil reserved in an oil cooler forcibly to the outside of a lubricating system, by feeding pressurized gas to the upper portion of the oil cooler from the outside at the time of switching use of two main oil pumps. CONSTITUTION:When the hydraulic pressure is lowered at the time of switching use of a main oil pump 1a, a solenoid valve 57b is opened in response to an output signal of a relay 54, so that pressurized gas from an external pressurized gas source is supplied from a connecting flange 63b into an oil chamber 45 of an auxiliary oil cooler 32b via an air pipe 56, solenoid valve 57b, orifice 59b, air pipe 60b, check valve 61b and air pipe 62b and pressurizes oil in the oil chamber 54b from the above. Oil thus pressurized in chamber 45b is discharged from a connecting flange 64b into an oil feed pipe 20 via an oil pipe 65b, check valve 66b and oil pipe 67 and supplied as lubricating oil to bearings 24, 26.

9. 发明专利

JPH0118244B2 失效
公开(公告)号：JPH0118244B2
公开(公告)日：1989-04-05
申请号：JP14580480
申请日：1980-10-20
申请人： HITACHI LTD
发明人： OOTAHARA YASUHIKO , SAKAMOTO AKIHISA
IPC分类号： F01D25/20 , F01M1/02 , F01M1/16

10. 发明专利

JPS6465393A BYPASS OIL FLUSHING DEVICE OF BEARING METAL 失效
公开(公告)号：JPS6465393A
公开(公告)日：1989-03-10
申请号：JP22019887
申请日：1987-09-04
申请人： HITACHI LTD
发明人： SAKAMOTO AKIHISA
IPC分类号： F16N39/06 , F16N33/00
摘要： PURPOSE:To shorten oil flushing period by providing some ports on an upper half bearing metal, a cap and a bearing box cover and installing an oil flushing pipe so that it can go through the ports. CONSTITUTION:Ports d, e, g are provided on an upper half bearing metal 9, a cap 10 and a bearing box cover 11 respectively and an oil flushing pipe 17 is installed in these ports d, e, g. Thereby, the disassembly and reassembly time of the equipment can be omitted and the oil flushing period not only in construction but also in periodical inspection can be shortened remarkably.

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