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1. 发明专利

JPH07190684A SEA WATER COOLING SYSTEM AND OPERATING METHOD THEREFOR 失效
公开(公告)号：JPH07190684A
公开(公告)日：1995-07-28
申请号：JP33490193
申请日：1993-12-28
申请人： HITACHI LTD
发明人： UTAMURA MOTOAKI , OKURA RYOICHI , SUZUKI TOMOHITO , TAKEDA TAIJI , SUMIYA YOSHIO , MUKOYA TOYOYUKI
IPC分类号： F28G13/00
摘要： PURPOSE:To early uniformize a circulating water temperature to eliminate a chilled water layer, and to remove marine living things by providing an auxil iary system having an auxiliary circulating pump inside a saline water circulat ing system, and agitating, mixing the water in an outlet of the auxiliary system. CONSTITUTION:At the time of filling water before a plant is stopped, an auxiliary system inlet valve 121 and an auxiliary system outlet valve 120 are opened to fully fill sea water in an auxiliary system 116, and a small circulating cycle of the system 116-a sea water circulating system 108-the system 116 is formed. A flow velocity in the system 116 is enhanced by an auxiliary system circulating pump 117, circulating warm water is agitated to uniformize its temperature. The circulating water having a small temperature difference is supplied to the system 108 by mixing high temperature water at an auxiliary system outlet 118 with auxiliary system water raised at its temperature at each one cycle. Thus, stepwise temperature rise is intended to suppress a temperature layer formation. Accordingly, circulating water temperature can be made uniform, and existence of marine living thing can be suppressed.

2. 发明专利

JPH06300484A BRUSH WASHING DEVICE FOR INNER SURFACE OF HEAT TRANSFER TUBE FOR HEAT EXCHANGER 失效
公开(公告)号：JPH06300484A
公开(公告)日：1994-10-28
申请号：JP8875093
申请日：1993-04-15
申请人： HITACHI LTD , TOKYO ELECTRIC POWER CO , HITACHI MACH & ENG LTD
发明人： ODA SHIGEO , SUMIYA YOSHIO , OTAKE KATSUMOTO , KOKUBO TAKASHI , SUZUKI NOBUHIRO , KUROKI MASAHIKO , KOREISHI YASUKI , MORIYA KOJI , NAKAHIRA YUJI
IPC分类号： F28G1/12
摘要： PURPOSE:To obtain a brush washing device by which a washing brush can be inserted into a heat transfer tube in a normal state after the washing brush is stopped just upstream a brush insert nozzle. CONSTITUTION:Brushes 5 are supplied into a brush feed hose 13 one by one by a brush feeder 10 and sent to a brush insert nozzle 21 by pressurized fluid supplied from a pressurized fluid supply device 16, and the brush insert nozzle 21 is positioned at heat transfer tube 3 of a heat exchanger by an automatic brush insert device 25. A washing device which inserts the brush 5 into the heat transfer tube 3 to perform washing is provided with a stopper 28 to stop the washing brush 5 just upstream the brush insert nozzle 21, and a perforated cylinder 29 having a diameter larger than the washing brush 5 is installed just upstream the stopper 28. The periphery of the stopper 28 and the perforated cylinder 29 are surrounded by a pressurized fluid passing part 30 having a diameter larger than the perforated cylinder 29.

3. 发明专利

JPH0420797A OPERATION OF CONDENSER BALL CLEANING SYSTEM 失效
公开(公告)号：JPH0420797A
公开(公告)日：1992-01-24
申请号：JP12134590
申请日：1990-05-14
申请人： HITACHI LTD
发明人： AIHARA TAKESHI , ODA SHIGEO , FUJITANI YASUO , MUKOYA TOYOYUKI , SUMIYA YOSHIO
IPC分类号： F28G1/12
摘要： PURPOSE:To completely recover a sponge ball by finely or fully opening a communication valve disposed between return water chambers of a condenser at the latter half of a ball recovery operation. CONSTITUTION:A sponge ball 30 is put into circulation water upper piping 18, 19 by ball putting pipes 28, 29. Since ball recovery containers 26, 27 are closed in a ball recovery operation, all sponge balls 30 passing through the ball recovery containers are recovered. However, sponge balls resident in a communication pipe 10 including a communication valve 11 are left behind as they are during the ball recovery operation. For a resident ball recovery operation a water flow is formed in the communication pipe 10 in any direction by slightly or fully opening the communication valve 11 during the ball recovery operation and thereafter to discharge the sponge balls from the communication pipe 10 for their recovery.

4. 发明专利

JPH0363539A NETHOD AND DEVICE FOR LEAK-TESTING OF CONDENSER EXPANSION JOINT PART AND CONDENSER EQUIPPED WITH THE DEVICE 失效
公开(公告)号：JPH0363539A
公开(公告)日：1991-03-19
申请号：JP19796789
申请日：1989-08-01
申请人： HITACHI LTD
发明人： WAKITA TOMONORI , TOMITA ISAMU , KUROUME HIROSHI , SUMIYA YOSHIO , YAMAGUCHI SHUHEI
IPC分类号： G21C17/003 , F28B9/00 , G01M3/02 , G21C17/02
摘要： PURPOSE:To eliminate the need for a large amount of pure water by applying pressure to liquid which is charged in an annular chamber covering a sealed connection part and detecting whether or not there is a leak of the liquid through the sealed connection part and thus testing the sealed connection part. CONSTITUTION:The sealed chamber 30 which covers the joint part between connection barrels 9 and II of the expansion joint part and a rubber belt 12 is formed outside the expansion joint part of the condenser I to the entire outer periphery of the condenser, and the sealed chamber 30 is an annular chamber. When a leak-testing is conducted, liquid such as pure water is charged by a pump, a cylinder etc., to fill the sealed chamber 30 and then the pressure is applied. Then an inspector enters the condenser 1 and inspects visually whether or not there is a leakage. Then only liquid which is much enough to fill the sealed chamber 30 is required at the time of the test.

5. 发明专利

JPH02115696A CLEANER FOR MALTITUBULAR HEAT EXCHANGER 失效
公开(公告)号：JPH02115696A
公开(公告)日：1990-04-27
申请号：JP26685088
申请日：1988-10-22
申请人： HITACHI LTD
发明人： ODA SHIGEO , SUMIYA YOSHIO , OTAKE KATSUMOTO , KUMAGAI YOSHIO
IPC分类号： F28G1/12 , F28G9/00
摘要： PURPOSE:To prevent a ball removing tube from blocking with a foreign matter by forming foreign matter block preventing means of cleanser removing tube reverse cleaning system provided through a reverse cleaning system outlet valve between the outlet side of a cleanser circulation pump and the outlet side of a cleanser removing tube, and a cleanser removing tube reverse cleaning system provided through a reverse cleaning system inlet valve between the cleanser circulation pump of the cleanser circulation system and a pump suction valve. CONSTITUTION:Foreign matter block preventing means is formed of a ball removing tube reverse cleaning system 19 provided through a reverse cleaning system outlet valve 18 between the outlet side of the ball circulation pump 10 of a ball (cleanser) circulation system and the outlet side of a ball removing tube 15, and a ball removing tube reverse cleaning system 19a provided through a reverse cleaning system inlet valve 20 between the pump 10 of the system and a pump suction valve 11. Thus, reverse water flow can be fed through the system 19a provided through the valve 20 and the tube 15 through the system 19 provided through the valve 18, thereby removing foreign matter in the tube 15.

6. 发明专利

JPS62280505A FEEDWATER HEATER 失效
公开(公告)号：JPS62280505A
公开(公告)日：1987-12-05
申请号：JP12125786
申请日：1986-05-28
申请人： HITACHI LTD
发明人： HOSHINO YOSHIYUKI , SUMIYA YOSHIO , SUGANO SHOZO
IPC分类号： F22D1/32 , F24H1/40

7. 发明专利

JPS6198907A Turbine bypass treatment device 失效
标题翻译：涡轮旁路处理装置
公开(公告)号：JPS6198907A
公开(公告)日：1986-05-17
申请号：JP21840984
申请日：1984-10-19
申请人： Hitachi Ltd
发明人： FUJITANI YASUO , HORIBE YOSHUN , SUMIYA YOSHIO
IPC分类号： F01K9/04
CPC分类号： F01K9/04
摘要： PURPOSE:To hold the degree of vacuum, in a power plant equipped with a turbine bypass system, at an appropriate level by connecting a plurality of energy dampers installed in each condenser through connecting pipes, and thereby making uniform the inflow of steam into the tube nest in the condenser. CONSTITUTION:Each of the condensers 7(7a-7c) of a nuclear power plant includes turbine bypass energy dampers 17(17a-17h) located in a steam space formed between the tube nest inside the condenser and hotwell ceiling plate. Each of these dampers 17 is composed of a mother tube provided with a number of orifices in the vertical direction and a pair of baffles arranged up and down as facing the orifices. Among the energy dampers 17a-17h, each group of dampers contained in one condenser 7, for ex. 17a-17c, are connected with one another through connecting pipes 22. This prevents the steam injected from the energy dampers 17 from being pushed aside to contribute to holding the degree of vacuum in the condenser at a proper level.
摘要翻译：目的：通过连接多个安装在每个冷凝器中的能量阻尼器，通过连接管连接多个能量阻尼器，在具有涡轮旁路系统的发电厂中保持真空度，从而使蒸汽均匀地流入管中嵌在冷凝器中。构成：核电厂的每个冷凝器7（7a-7c）包括位于冷凝器内的管座和热井顶板之间形成的蒸汽空间中的涡轮旁路能量阻尼器17（17a-17h）。这些阻尼器17中的每一个由在垂直方向上设置有多个孔的母管和面对孔的上下配置的一对挡板构成。在能量阻尼器17a-17h中，每组阻尼器包含在一个冷凝器7中，例如 17a-17c通过连接管22彼此连接。这防止从能量阻尼器17喷射的蒸汽被推到一边以有助于将冷凝器中的真空度保持在适当的水平。

8. 发明专利

JPS5955328A Control device of foreign matter removing device 失效
标题翻译：外部移除装置的控制装置
公开(公告)号：JPS5955328A
公开(公告)日：1984-03-30
申请号：JP16489482
申请日：1982-09-24
申请人： Hitachi Ltd
发明人： SUMIYA YOSHIO , OOTAKE KATSUMOTO , NONAKA SETSUO , MIYAI MASAHIKO
IPC分类号： B01D35/143 , B01D35/14
摘要： PURPOSE: To perform surely an operation for removing foreign matters, by discriminating the clogging rate of a filter by detecting a deformation extent of the filter, and controlling the operation for removing foreign matters.
CONSTITUTION: A foreign matter removing device incorporating with a filter is installed in a cooling water inlet system 2 of a condenser 1 to catch foreign matters by the surface of the filter in the removing device, thereby removing the foreign matter 50 together with a water flow from a discharging system 5 by producing a swirling vortex flow. And, a strain gauge 30 is attached to the inner surface of the filter to measure a deformation extent produced by a pressure difference between the inner and outer surfaces of a filter element 14, and the deformation extent of the element 14 is measured by the gauge 80 to transmit the result to a strain signal converter 83 by a lead wire 81 thereby transmitting it to a control device 60. As a result, the operation for removing the foreign matters is surely performed without being affected by a dynamic pressure caused by a water flow in the foreign matter removing device.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：通过检测过滤器的变形程度来判断过滤器的堵塞速度，并且控制除去异物的操作来确保排除异物的操作。构成：在冷凝器1的冷却水入口系统2中安装有与过滤器结合的异物去除装置，以通过除去装置中的过滤器的表面捕获异物，从而与水流一起除去异物50 通过产生旋流涡流从排放系统5。并且，应变计30附接到过滤器的内表面以测量由过滤元件14的内表面和外表面之间的压力差产生的变形程度，并且元件14的变形程度通过量规 80，通过引线81将结果发送到应变信号转换器83，从而将其发送到控制装置60.结果，可以可靠地执行除去异物的操作，而不受水的动态压力的影响在异物去除装置中流动。

9. 发明专利

JPH0579776A CONDENSER 失效
公开(公告)号：JPH0579776A
公开(公告)日：1993-03-30
申请号：JP24188691
申请日：1991-09-20
申请人： HITACHI LTD
发明人： IWATA YOSHIYA , UENO TAKESHI , HORIBE YOSHUN , SUMIYA YOSHIO , MUKAI YASUAKI
IPC分类号： F28B9/08 , F28B9/10
摘要： PURPOSE:To obtain a condenser in which a starting time can be shortened and a steam using amount can be reduced by separating a condenser hot well into a degassing chamber and a water storage chamber, raising a condensed water level in the degassing chamber to obtain a wide space for introducing steam and holding a level of a necessary water storage amount in the storage chamber. CONSTITUTION:Condensed water having high concentration of dissolved oxygen introduced from a condensing recirculation system 6 is sprinkled in the upper part of a ceiling plate 10 provided at the upper part of a water storage chamber 24, further passed through a cutout 21 provided at an isolation plate 20, and dropped in a degassing chamber 22. The condensed water dropped in the chamber 22 is heated and degassed by heated degassed steam to be supplied to a steam injection tube 15 so provided as to inject under the water surface, and dropped from the cutout 23 in the chamber 24. The condensed water dropped in the chamber 24 is fluidized toward a condensed water outlet 4 along a partition plate 11 so provided as to form a passage. Accordingly, a degassing time can be shortened, power of an auxiliary unit and steam using amount can be reduced, and a degassing effect can be improved.

10. 发明专利

JPH04106394A CONDENSER FOR STEAM TURBINE 失效
公开(公告)号：JPH04106394A
公开(公告)日：1992-04-08
申请号：JP22446290
申请日：1990-08-28
申请人： HITACHI LTD
发明人： HORIBE YOSHUN , SUMIYA YOSHIO , OSHIMA YOSHIKUNI
IPC分类号： F28B9/08
摘要： PURPOSE:To provide a condensed water descending pipe with the function of a pressure equalizing pipe and reduce the number of isolating valves by a method wherein the condensed water descending pipe, having an outlet opening above the water level of a hot well is provided in order to form two flow passages of non-condensable gas or deaerating excessive steam, ascending toward a condensing part through the central part of the pipe. CONSTITUTION:The flowing condition of a condensed water descending pipe 6 is different remarkably depending on the operating condition of a condenser and principal flow upon starting is ascending flow of excessive deaerating steam, introduced by a deaerating heater 9 and flowing from a hot well 4 into a water condensing part 3, while the flow upon normal operation is the descending flow of condensed water of the exhaust steam of a turbine, which flows from the water condensing part 3 toward the hot well 4. The superposing condition of these ascending flow and descending flow under the maximum flow rate conditions of respective flows can not be generated when a condenser is operated. The size of the condensed water descending pipe 6 is determined considering the flow conditions of both of the flows while the outlet port thereof is provided above the water level of the hot well 4 considering the ascending flow of excessive steam upon starting the operation of the condenser. The functions of a condensed water descending pipe and a pressure equalizing pipe can be realized by only the condensed water descending pipe 6 and the reduction of the number of isolating valves becomes possible.

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