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1. 发明专利

JPS56149506A WATER SHAFT SEALING APPARATUS FOR BOILER WATER FEED PUMP 失效
公开(公告)号：JPS56149506A
公开(公告)日：1981-11-19
申请号：JP5284580
申请日：1980-04-23
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： UTSUNO RIICHI , URA KATSUMI
IPC分类号： F04D29/10 , F22D11/00

2. 发明专利

JPS54135907A CONDENSER OPERATION SYSTEM 失效
公开(公告)号：JPS54135907A
公开(公告)日：1979-10-22
申请号：JP4221378
申请日：1978-04-12
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： UTSUNO RIICHI , URA KATSUMI
IPC分类号： F28B11/00
摘要： PURPOSE:To solve the problems of a freezed air ejector and its reliability by attaching the air ejector on a vacuum pump which makes the internal of a condenser vacuum. CONSTITUTION:Incompressible gas generated in a drum air cooler of a condenser 1 is discharged into atmosphere by a vacuum pump 2 and on the other hand, cools a water room of the condenser 1. Thermostats 13, 14 are equipped in a hot well 19 of the said condenser 1 and a seal pipe 20 of the vacuum pump 2. A control signal is fed from a controller 15 according to the outputs of those thermostats 13, 14 to regulate a cooling water outlet valve 16 of the condenser so that the internal of the condenser 1 can be kept vacuum. Cooling water source of a sealed-water cooler 12 coming from the outlet of a circulation pump 18 cools sealed water in the vacuum pump 2 at temperature approximately equal to the temperature of said hot well 19.

3. 发明专利

JPH09209715A LOW-TEMPERATURE CORROSION PREVENTING DEVICE FOR EXHAUST GAS RE-COMBUSTION TYPE COMBINED PLANT 失效
公开(公告)号：JPH09209715A
公开(公告)日：1997-08-12
申请号：JP1735496
申请日：1996-02-02
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： WATANABE TOSHIKATSU , ARASE HIROSHI , KURIBAYASHI TETSUZO , URA KATSUMI
IPC分类号： F01K7/40 , F01K23/10 , F22B1/18 , F22D1/00
摘要： PROBLEM TO BE SOLVED: To prevent low-temperature corrosion by utilizing the exhaust gas of a gas turbine as boiler combustion air, and providing a heat exchanger utilizing the fluid circulated between a low-pressure gas heater inlet condensate system and a boiler water feed system to transfer heat to the low-pressure gas heater inlet condensate system. SOLUTION: This exhaust gas re-combustion type combined plant is provided with a high-pressure steam turbine 9 driven by the steam from a boiler 5, an intermediate- pressure steam turbine 10 driven by the steam obtained when the exhaust steam is reheated by the boiler 5, and a low-pressure steam turbine 11 driven by the exhaust steam of the intermediate-pressure steam turbine 10. A power generator 12 is driven by these steam turbines 9-11. The combined plant is also provided with a heat exchanger 29 heating condensate on the inlet side of a low-pressure gas heater 7 and a heat exchanger 30 heating feed water at the inlet of a high-pressure gas heater 6. The heat exchangers 29, 30 are connected by a pipe, a heat medium is circulated to increase the inlet condensate temperature of the low-pressure gas heater 7, and the low-temperature corrosion on the heat transfer surface of the low-pressure gas heater 7 is prevented.

4. 发明专利

JPS572901A SHAFT SEALING DEVICE FOR WATER OF WATER FEEDING PUMP OF BOILER 失效
公开(公告)号：JPS572901A
公开(公告)日：1982-01-08
申请号：JP7551980
申请日：1980-06-06
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： UTSUNO RIICHI , URA KATSUMI
IPC分类号： F04D29/10 , F22D11/00 , F22D11/06

5. 发明专利

JPS61242683A METHOD AND DEVICE FOR DEAERATING FEED WATER 失效
公开(公告)号：JPS61242683A
公开(公告)日：1986-10-28
申请号：JP8268185
申请日：1985-04-19
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： NAKAMURA YASUAKI , URA KATSUMI , OSHIMA YOSHIKUNI
IPC分类号： C02F1/20 , B01D19/00
摘要： PURPOSE:To reduce effectively oxygen dissolved in feed water by effectively warming the feed water to be sent to a daerator with auxiliary steam and evacuating the inside of the deaerator with a deaerator vent system. CONSTITUTION:The lower end part of a feed water communicative pipe 10 for communicating a deaeration chamber 1 with a water storage tank 12 is led below the water surface in the water storage tank 12, (a) a vent pipe 14 provided with an orifice 14a and a stop valve 15 for the vent pipe and (b) a start-up vent pipe 16 furnished with a stop valve 17 for the vent pipe are arranged in parallel between the deaeration chamber 1 and a condenser and a pipe 18 for supplying heated steam to the deaeration chamber 1 is provided. The feed water deaeration device is used for heating the feed water to a boiler. When the boiler is started, the valve 17 is opened and a part of heated steam is introduced into the water storage tank 12. Consequently, time necessary for deaeration and cleanup at startup can be reduced, the amt. of auxiliary steam is saved and the cost of in-plant boiler equipment can be reduced.

6. 发明专利

JPS6191404A Pre-boiler cleanup system 失效
标题翻译：预热器清洁系统
公开(公告)号：JPS6191404A
公开(公告)日：1986-05-09
申请号：JP21139784
申请日：1984-10-11
申请人： Hitachi Ltd , Hitachi Eng Co Ltd
发明人： NAKAMURA YASUAKI , TAMURA YUHEI , URA KATSUMI
IPC分类号： F22B37/52 , F22B37/48 , F22D11/00

7. 发明专利

JPS58208506A FEEDWATER HEATER FOR THERMOELECTRIC POWER PLANT 失效
公开(公告)号：JPS58208506A
公开(公告)日：1983-12-05
申请号：JP9120582
申请日：1982-05-31
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： URA KATSUMI , HOIZUMI SHINICHI , KANAZAWA MASAO
IPC分类号： F01K7/40 , F22D1/32

8. 发明专利

JPS5776210A Vacuum enhancing appararus for turbine used for driving boiler water feed pump 失效
标题翻译：用于驱动锅炉水泵的涡轮机真空增压装置
公开(公告)号：JPS5776210A
公开(公告)日：1982-05-13
申请号：JP15204280
申请日：1980-10-31
申请人： Hitachi Eng Co Ltd , Hitachi Ltd
发明人： UTSUNO RIICHI , URA KATSUMI
IPC分类号： F01D15/08 , F01D25/00 , F01K9/00
摘要： PURPOSE: To enhance the degree of vacuum of the turbines accurately and in a simple manner without lowering the degree of vacuum of a condenser by a method wherein exhaust chambers of the turbines are connected to condenser air extracting device.
CONSTITUTION: In case the degree of vacuum of each of the turbines 5a and 5b for driving the water feeding pumps 6a and 6b is enhanced, casing drain valves 12a and 12b are gradually opened first of all and then the exhaut chambers of the turbines 5a and 5b for driving the water feed pumps 6a and 6b are exhausted, casing drain valves 12a and 12b are gradually opened and then the exhaust chambers of the turbines 5a and 5b are evacuated through the operations of the condenser air extracting devices 7a and 7b. In this case, at least one of the devices 7a and 7b is always operated during the operation of the related plant and the degree of vacuum at the entrance of each of the devices 7a and 7b is held higher than that of the condenser 3 so as to prevent the lowering of the degree of vacuum of the condenser 3. With the above arrangement, in case where the degree of vacuum of each of the turbines 5a and 5b becomes approximately same with that of the condenser 3, drain valves 14a and 14b, balancing valves 10a and 10b and exhaust check valves 9a and 9b are opened in sequence in that order.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：通过这样的方法，通过涡轮机的排气室连接到冷凝器空气抽取装置的方法，以精确地和简单的方式提高涡轮机的真空度而不降低冷凝器的真空度。构成：为了提高用于驱动给水泵6a和6b的涡轮机5a和5b的每个的真空度，壳体排出阀12a和12b首先逐渐打开，然后涡轮机5a和5b的前部室用于驱动给水泵6a和6b的5b被排出，套管排放阀12a和12b逐渐打开，然后通过冷凝器空气抽取装置7a和7b的操作将涡轮机5a和5b的排气室抽真空。在这种情况下，设备7a和7b中的至少一个在相关设备的操作期间总是操作，并且每个设备7a和7b的入口处的真空度被保持为高于冷凝器3的真空度，以便为了防止冷凝器3的真空度的降低。通过上述结构，在各涡轮机5a，5b的真空度与冷凝器3大致相同的情况下，排出阀14a，14b，平衡阀10a和10b以及排气止回阀9a和9b依次打开。

9. 发明专利

JPS55160197A CONDENSER CIRCULATING WATER PUMPING SYSTEM AND ITS OPERATING METHOD 失效
公开(公告)号：JPS55160197A
公开(公告)日：1980-12-12
申请号：JP6745679
申请日：1979-06-01
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： UTSUNO RIICHI , URA KATSUMI
IPC分类号： F04D15/00
摘要： PURPOSE:To avoid malcontrol of a cooling water outlet valve and save fuel by operating a stationary-impeller circulating water pump to maintain a minimum flow rate of cooling water required, and operating both of the stationary impeller circulating water pump and a movable impeller circulating water pump if a flow rate exceeds the minimum rate. CONSTITUTION:For supplying cooling water at a minimum flow rate required, only a stationary impeller circulating water pump 2a is operated. For supplying cooling wter at a flow rate exceeding the minimum, both of the stationary impeller circulating water pump 2b and a movable impeller circulating water pump 2b are driven. Adjusting the impeller of the movable impeller circulating water pump 2b varies a flowrate. Can be solved the tough problem of controlling a cooling water flow rate of the order of the minimum in only use of the variabe impeller circulating pump 2b. The stationary impeller circulating pump 2a has an advantage that a power of a shaft reduces in case of a higher flow rate, thereby saving power of the pump.

10. 发明专利

JPS5565883A AIR EXTRACTOR 失效
公开(公告)号：JPS5565883A
公开(公告)日：1980-05-17
申请号：JP13790478
申请日：1978-11-10
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： UTSUNO RIICHI , URA KATSUMI
IPC分类号： F28B9/10
摘要： PURPOSE:To shorten the startup time of the plant while dispensing with the air ejector by two systems; one for continuously feeding confining water to a vacuum pump from a replenishing water feeder and the other for recovering thereof to a replenishing water tank. CONSTITUTION:Branched off a replenishing water piping 28 to a condenser 3, a confining water piping 12 is provided to feed a confining water type vacuum pump with water fed to a replenshing tank as the confining water supply source to the vaccum pump. The confining water piping is provided with a confining water feed pump 23 and a confining water regulating valve 20 to continuously feed the vacuum pump with the confining water. In addition, the confining water discharged with air extracted by the vacuum pump is withdrawn by a confining water recovery pump 21 carried on a confining water recovery piping 22 connected to the bottom of a demister 4 and returned to the replenishing water tank 18.

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