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1. 发明专利

GB2109709B APPARATUS FOR MAGNETICALLY REMOVING IRON OXIDES FROM WATER IN FEED WATER SYSTEM OF THERMOELECTRIC POWER PLANT 未知
公开(公告)号：GB2109709B
公开(公告)日：1985-05-09
申请号：GB8229215
申请日：1982-10-13
申请人： HITACHI LTD
发明人： FUJITANI YASUO , HOSHINO YOSHIYUKI , OHSHIMA YOSHIKUNI , MIYAI MASAHIKO , SUZUKI MAMORU , SUZUKI KATSUMI
IPC分类号： B01D19/00 , B03C1/28 , C02F1/48 , B03C1/02

2. 发明专利

DE3164443D1 FEEDWATER HEATER 未知
公开(公告)号：DE3164443D1
公开(公告)日：1984-08-02
申请号：DE3164443
申请日：1981-09-24
申请人： HITACHI LTD
发明人： HOSHINO YOSHIYUKI , IMAZU SHYUICHI , MIYAI MASAHIKO , OHSHIMA YOSHIKUNI , IZUMIYA MASAKIYO
IPC分类号： F22D1/32 , F28B9/10 , F28D7/06 , F28F9/02 , F28F9/22
摘要： A horizontal feedwater heater for use in heat power stations, of the type having a shell (1), a plurality of U-bent heat transfer tubes (6) extended in the longitudinal direction of the shell and a vent tube (15) extended in the longitudinal direction of the shell substantially at the centre of the latter and adapted for extracting and discharging non-condensed gas. The feedwater heater has a baffle (20) arranged at each side of the vent tube and having a horizontal plate portion (20a) extended horizontally from the vent tube and an inclined plate portion (20b) inclined downwardly from the end of the horizontal plate portion at an obtuse angle to the latter. The length of projection of the baffle (20) from the vent tube (15) is varied along the length of the shell in accordance with the ratio of amount of heat exchanged between the steam and feedwater in each axial section of the tube nest (16) connected to the feedwater inlet (3) to the amount of heat exchanged between these fluids in the corresponding tube nest section of the feedwater outlet side (4), thereby to permit an efficient extraction of the non-condensed gas. The structural members contactable with the heating steam is made from a low alloy steel containing more than 1 % of Cr to exhibit a high corrosion resistance.

3. 发明专利

DE3238138A1 未知
公开(公告)号：DE3238138A1
公开(公告)日：1983-06-09
申请号：DE3238138
申请日：1982-10-14
申请人： HITACHI LTD
发明人： FUJITANI YASUO , HOSHINO YOSHIYUKI , OHSHIMA YOSHIKUNI , MIYAI MASAHIKO , SUZUKI MAMORU , SUZUKI KATSUMI
IPC分类号： B01D19/00 , B03C1/28 , C02F1/48

4. 发明专利

GB2109709A Apparatus for magnetically removing iron oxides from water in feed water system of thermoelectric power plant 未知
公开(公告)号：GB2109709A
公开(公告)日：1983-06-08
申请号：GB8229215
申请日：1982-10-13
申请人： HITACHI LTD
发明人： FUJITANI YASUO , HOSHINO YOSHIYUKI , OHSHIMA YOSHIKUNI , MIYAI MASAHIKO , SUZUKI MAMORU , SUZUKI KATSUMI
IPC分类号： B01D19/00 , B03C1/28 , C02F1/48 , B03C1/02
摘要： Iron oxides can be economically and efficiently removed from feed water through magnetic attraction by providing a magnetic attracting means 48 in a feed water conduit connecting an air separator compartment 9A to an air separator water tank 10 in an air separator in a feed water and condensed water system in a thermoelectric power plant. The magnetic attracting means may be in the downcomer 25 or, as shown, in the distributor therebelow. Numerous arrangements of permanent magnets are described.

5. 发明专利

DE3125008A1 Apparatus for removing iron oxides in the water circulation of power stations 未知
公开(公告)号：DE3125008A1
公开(公告)日：1982-03-18
申请号：DE3125008
申请日：1981-06-25
申请人： HITACHI LTD
发明人： SUZUKI MAMORU , SUZUKI KATSUMI , ITO KAZUTOSHI , MINATO AKIRA , KANBAYASHI TSUYOSHI , HOSHINO YOSHIYUKI
IPC分类号： B03C1/28 , C02F1/48 , F22D11/00 , F22B37/48
摘要： In the context of the present invention, magnetic means, in particular permanent magnets, are arranged within the outflow line of the high pressure feed water heater of the water vessel of the air separator for the feed water or within the condensate water system of a power station. As a result, the iron oxides present within the feed water or condensate water can be attracted and removed. … …

6. 发明专利

JPS5989778A WATER TREATMENT FOR POWER GENERATION PLANT 失效
公开(公告)号：JPS5989778A
公开(公告)日：1984-05-24
申请号：JP19892882
申请日：1982-11-15
申请人： HITACHI LTD
发明人： SUZUKI KATSUMI , SUZUKI MAMORU , MINATO AKIRA , HOSHINO YOSHIYUKI , KANBAYASHI TAKESHI
IPC分类号： C02F5/00 , C02F5/08 , C23F11/18 , C23F14/00 , C23F15/00
摘要： PURPOSE:To prevent the corrosion in the system apparatus and piping of a power generation plant provided with a deaerator in a feed water system by controlling the O2 and H2O2 fed through the outport of a condensate pump with the deaerator. CONSTITUTION:The feed water of the above-described power generation plant is passed through a condenser 2, a condensate hot well 3, a condensate desalter 6, a heater 8 for low pressure feed water, a deaeration chamber 9 of a deaerator, a water storage tank 10 for the deaerator and a heater 13 for high pressure feed water. The feed water is fed to a boiler 14 and after the feed water is converted to steam therein, the steam is admitted 15 into a turbine 1 and is returned again into the condenser 2 after it is used for working in the case of a heat power plant. A feeder 20 for an oxidizing agent such as O2 or H2O2 is provided after a condensate pump 7 to feed O2 or H2O2 in order to prevent the corrosion of the apparatus and piping during the above-mentioned period. The feed water 26, from the heater 8, contg. the O2 admitted into the chamber 9 is put into a spray chamber 27. The opening of the valve 28 in the chamber 27 is increased in this stage to put the feed water 26 into a feed water tray chamber 29, whereby the concn. of O2 is controlled.

7. 发明专利

JPS58173383A METHOD AND CONSTRUCTION FOR OVERHAUL, TRANSPORTATION AND ASSEMBLING OF CONDENSER 失效
公开(公告)号：JPS58173383A
公开(公告)日：1983-10-12
申请号：JP5370682
申请日：1982-04-02
申请人： HITACHI LTD
发明人： SASAKI TAKUYA , MIYAI MASAHIKO , SUMIYA YOSHIO , ISHIDA KEIZOU , BAN KUNIYOSHI , HOSHINO YOSHIYUKI
IPC分类号： F28B1/00 , B23P21/00
摘要： PURPOSE:To facilitate the transportation and assembling by a structure wherein assembling surface plates, which are formed in corresponding to the divided forms of the condenser, are fixed on the bottom of the condenser and at the same time rolling members for transfer are mounted to the assembling surface plates. CONSTITUTION:Surface plates 3 are respectively formed in the form of a frame by combining two longitudinal members 3a and five transverse members 3b. Five connecting members 3c are detachably laid between said surface plates 3. A large number of the rolling members 4 are mounted on the under surfaces of the longitudinal members 3a at fixed intervals. The shell main body of a condenser is assembled on the assembling surface plates 3 in a longitudinally divided form. After that, tube nests 9 are composed of by inserting fine tubes 8 in tube supporting plates 7 in order to assemble two long blocks 1 and 2. After assembling the two blocks 1 and 2, the connecting members 3c of the surface plates are removed and the two assembling surface plates 3 are separated from each other. Consequently, the long block 1 and the long block 2 are in the state to be carried separately. Because the rolling members 4 are mounted on the under surfaces of the surface plates 3, the long blocks 1 and 2 can be easily transferred.

8. 发明专利

JPS58168889A PROTECTIVE METHOD FOR CONDENSER UNDER TRANSPORTATION 失效
公开(公告)号：JPS58168889A
公开(公告)日：1983-10-05
申请号：JP4892882
申请日：1982-03-29
申请人： HITACHI LTD
发明人： ISHIDA KEIZOU , MIYAI MASAHIKO , SASAKI TAKUYA , SUMIYA YOSHIO , BAN KUNIYOSHI , HOSHINO YOSHIYUKI
IPC分类号： F28B1/00
摘要： PURPOSE:To contrive to save materials and shorten the procedure steps, by a method wherein plate materials for protecting cooling pipes are fitted when transporting a steam turbine condenser in partitions, and the plate materials are utilized as assembling and scaffolding materials at the job site. CONSTITUTION:The cooling pipes 4 having an extremely small wall thickness are transported in the condition of being covered by protective plates 8. By providing a supporting plate 3 with a cutout for a longitudinal reinforcement 7, the protective plates 8 can be placed on lower flanges of the reinforcement 7 when fitting reinforcing pipes 5, 5' at the job site, and the protective plates 8 can be used also as protective plates at the time of transportation, by the fitting operation. Accordingly, the protective plates for the cooling pipes which plates are used at the time of transporting the cooling pipes can be used for protecting the cooling pipes and as scaffolding plates when fitting an upper shell.

9. 发明专利

JPS58106308A DEAERATOR 失效
公开(公告)号：JPS58106308A
公开(公告)日：1983-06-24
申请号：JP20352381
申请日：1981-12-18
申请人： HITACHI LTD
发明人： SASAKI TAKUYA , HOSHINO YOSHIYUKI
IPC分类号： F22D1/30 , F22D1/28

10. 发明专利

JPS526803A DESPOSAL SYSTEM FOR EXHAUST BY GAS EXTRACTOR 失效
公开(公告)号：JPS526803A
公开(公告)日：1977-01-19
申请号：JP8179775
申请日：1975-07-04
申请人： HITACHI LTD
发明人： SASAKI TAKUYA , HOSHINO YOSHIYUKI
IPC分类号： F22D1/28 , F22D1/48 , F28B9/00 , F28B9/10
摘要： PURPOSE:Effective recovery of heat and steam contained in the exhaust by a gas extractor,and recycling of them to a water supply system,which are attained by leading the exhaust gas extracted by the gas extractor to a condenser in a turbine plant.

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