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1. 发明专利

JPH11248104A APPARATUS FOR PREVENTING COMBUSTION GAS DIVERTING FLOW OF BOILER HEAT TRANSFER TUBE 失效
公开(公告)号：JPH11248104A
公开(公告)日：1999-09-14
申请号：JP5524898
申请日：1998-03-06
申请人： BABCOCK HITACHI KK
发明人： MARUMOTO TAKAHIRO , IGUCHI YUJI
IPC分类号： F22B37/40
摘要： PROBLEM TO BE SOLVED: To prevent combustion gas heat transfer calories of a boiler furnace from reducing and reduce an amount of erosion of heat transfer tubes. SOLUTION: A plate 4 is provided wholly in a direction of width of a combustion gas flow passage in an upper part of a bottom wall 6 of a sub-side wall and in a direction facing a combustion gas flow. Forming a stagnation zone in a tail flow part of the plate 4 allows a gas flow at the entrance of a horizontal heat transfer part 2 to be a uniform flow. In an ordinary gas flow, the stagnation zone is formed not in the upper part of the bottom wall 6 of the sub-side wall but in the horizontal heat transfer tube parts. Forming the stagnation zone in the upper part of the bottom wall of the sub-side wall allows separation bubbles formed in the horizontal heat transfer part 2 to be nothing.

2. 发明专利

JP2003065984A Method and apparatus for assessing remaining life of furnace heat conduction wall panel 审中-公开
标题翻译：用于评估炉膛导热壁板的剩余寿命的方法和装置
公开(公告)号：JP2003065984A
公开(公告)日：2003-03-05
申请号：JP2001260859
申请日：2001-08-30
申请人： Babcock Hitachi Kk , バブコック日立株式会社
发明人： HASHIMOTO MASAMITSU , IGUCHI YUJI
IPC分类号： G01K3/14 , F22B37/38 , G01N17/00 , G01N25/18
摘要： PROBLEM TO BE SOLVED: To provide a method and an apparatus for accurately assessing a remaining life of a furnace heat conduction wall panel of a boiler furnace.
SOLUTION: An operational history database including an operating temperature, a pressure, a time and a mending history of the furnace heat conduction wall panel, and a furnace structure database including a furnace overall structure, a panel shape, a fluid path and a furnace material are collected. A temperature distribution of the furnace heat conduction wall panel is measured, and a maximum deformation amount of the furnace heat conduction wall panel is obtained with the use of the temperature distribution of the furnace heat conduction wall panel. A maximum generation stress of the furnace heat conduction wall panel is obtained with the use of the maximum deformation amount of the furnace heat conduction wall panel. A fatigue damage and a creep damage of the furnace heat conduction wall panel and its life consumption are obtained from the maximum generation stress of the furnace heat conduction wall panel, the temperature distribution and the operational history database of the furnace heat conduction wall panel in this method of assessing the remaining life of the furnace heat conduction wall panel.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种用于准确评估锅炉炉的炉导热壁板的剩余寿命的方法和装置。解决方案：包括炉导热壁板的操作温度，压力，时间和修补历史的操作历史数据库，以及包括炉整体结构，面板形状，流体路径和炉材料的炉结构数据库被收集。测量炉内导热壁板的温度分布，利用炉内导热壁板的温度分布，得到炉内导热壁板的最大变形量。利用炉内导热壁板的最大变形量获得炉内导热壁板的最大发生应力。炉膛导热壁板的疲劳损伤和蠕变损伤及其使用寿命由炉内导热壁板的最大发生应力，炉内导热壁板的温度分布和运行历史数据库得出评估炉内导热壁板剩余寿命的方法。

3. 发明专利

JP2000249304A BOILER PROVIDED WITH PARALLEL GAS APPARATUS 失效
公开(公告)号：JP2000249304A
公开(公告)日：2000-09-12
申请号：JP5162799
申请日：1999-02-26
申请人： BABCOCK HITACHI KK
发明人： IGUCHI YUJI
IPC分类号： F22G3/00
摘要： PROBLEM TO BE SOLVED: To make it easy to clean a rising part of a heat recovery apparatus provided on an uppermost step of a backside corridor and maintain performance of heat recovery. SOLUTION: In the boiler a rising part 20a of an uppermost-step heat recovery apparatus 20 provided on a backside corridor 6b is positioned at an approximate center of the backside corridor 6b. As a result, a space between a sling tube 9 and the rising part 20a becomes wide, and cleaning work for the rising part 20a by a soot blower becomes easy. In this case, arranging a horizontal part of an upper side of the heat recovery apparatus 20 to be higher than a bottom wall 5a of a front part of a heat transfer part 5 makes it unnecessary that total height of the heat recovery apparatus 20 is higher than a conventional heat recovery apparatus, because combustion gas impinging on side surfaces of the heat recovery apparatus 20 heats the rising part 20a.

4. 发明专利

JP2003114005A METHOD FOR OPERATING BOILER 审中-公开
公开(公告)号：JP2003114005A
公开(公告)日：2003-04-18
申请号：JP2001308714
申请日：2001-10-04
申请人： BABCOCK HITACHI KK
发明人： IGUCHI YUJI
IPC分类号： F23J1/00 , F23C99/00 , F23C11/00
摘要： PROBLEM TO BE SOLVED: To surpress accumulation of ash in the vicinity of a manhole 13 situated in an auxiliary side wall 7 of a furnace 1. SOLUTION: By increasing a ratio of an air feed amount of a burner 2b, positioned on the side wall side, of a plurality of burners 2 situated in the direction of a furnace width of a pair of furnace wall surfaces 4 of the furnace 1 than that of a burner 2a situated on a furnace wall surface 4 situated near to a central, the gas flow velocity in the vicinity of a furnace side wall, in the vicinity of an auxiliary side wall, and in the vicinity of the wall surface of a rear heat transfer part can be increased to a value higher than a gas flow velocity at the central part of a gas flow passage surrounded by each wall. Therefore, a gas speed 22 in the vicinity of the auxiliary side wall on the bottom wall of the auxiliary side wall is higher than that at the central part of the bottom wall of the auxiliary side wall, and an accumulation amount 24 of coal ash, produced by combustion of coal, in the vicinity of an auxiliary side wall 7 at the bottom wall of the auxiliary side wall is reduced than a conventional accumulation amount.

5. 发明专利

JP2005180741A Coal fired fluidized bed boiler 审中-公开
标题翻译：煤燃烧流化床锅炉
公开(公告)号：JP2005180741A
公开(公告)日：2005-07-07
申请号：JP2003419624
申请日：2003-12-17
申请人： Babcock Hitachi Kk , バブコック日立株式会社
发明人： IGUCHI YUJI
IPC分类号： F23C10/18 , F22B1/02
摘要： PROBLEM TO BE SOLVED: To suppress abrasion due to flowing of bed material at a pipe bent part of a penetration part neighborhood of a water wall in a heat transfer pipe in a coal fired fluidized bed boiler. SOLUTION: In the heat transfer pipe arranged in a furnace of the coal fired fluidized bed boiler, the heat transfer pipe is composed of the pipe bent part 6 penetrating the water wall and formed in a furnace side, and a pipe horizontal part 5 in the furnace. In air supply nozzles 10 arranged in a lower face of a fluidized bed wherein the bed material flows, the air supply nozzle most nearest to a furnace wall 1 is arranged at a predetermined distance in a furnace center part direction from the pipe bent part, and it is composed such that by arrangement of the air supply nozzles, a whole of the pipe bent part is substantially covered by a fixed bed 8 where the bed material does not flow. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了抑制床煤材料在燃煤流化床锅炉的传热管中的水壁的渗透部附近的管弯曲部分的流动的磨损。解决方案：在配置在燃煤流化床锅炉的炉中的传热管中，传热管由穿透水壁并在炉侧形成的管弯曲部6和管水平部 5在炉子里在布置在床层流动的流化床的下表面的供气喷嘴10中，最靠近炉壁1的供气喷嘴在炉中心部分方向上从管弯曲部分排出一定距离，其构成为，通过排气喷嘴，整个管弯曲部分基本上被床材料不流动的固定床8覆盖。版权所有（C）2005，JPO＆NCIPI

6. 发明专利

JPH09126409A METHOD AND DEVICE FOR TEMPERATURE CONTROL OF FEED-WATER HEATER 失效
公开(公告)号：JPH09126409A
公开(公告)日：1997-05-16
申请号：JP28479995
申请日：1995-11-01
申请人： BABCOCK HITACHI KK
发明人： IGUCHI YUJI , FUKUMOTO FUMIO
IPC分类号： F22D1/00 , F22D1/12
摘要： PROBLEM TO BE SOLVED: To prevent steaming of an economizer so that the outlet temperature of the economizer does not reach the saturation temperature by providing a bypass on the water supply side of a feed-water heater, adjusting the water supply from a bypass piping according to the load of a boiler, controlling the feed-water temperature at an outlet part of the feed-water heater by the exhaust gas, and controlling the fee-water temperature. SOLUTION: A thermometer 9 installed at an outlet part of a feed-water heater 4 (piping downstream of a merged part with a bypass feed-water tube 7) detects that the outlet temperature of the feed-water heater 4 to be heated by the exhaust gas rises over the prescribed value when the boiler load is dropped. A bypass flow rate control valve 3 installed on the bypass feed-water piping 7 is controlled. The low temperature water at the inlet of the feed-water heater 4 to be heated by the exhaust gas 8 is merged with the high temperature water at the outlet of the feed-water heater 4. The transient rise of the temperature of the feed-water at the outlet of the feed-water heater 4 to be heated by the exhaust gas is suppressed to prevent steaming of an economizer 6 in advance.

7. 发明专利

JPH07163850A FLUID MIXER 失效
公开(公告)号：JPH07163850A
公开(公告)日：1995-06-27
申请号：JP31351793
申请日：1993-12-14
申请人： BABCOCK HITACHI KK
发明人： TANIGAWA MASUMI , IGUCHI YUJI , MIMURA TETSUO , FUKUMOTO FUMIO
IPC分类号： B01F3/02 , B01F5/02
摘要： PURPOSE:To simultaneously satisfy the acceleration of the uniform mixing of fluids and the reduction of pressure loss on the side of a mixed fluid by equalizing the jet flow rate of the mixed fluid supplied to a main fluid in the direction almost crossing the flow direction of the main fluid at a right angle. CONSTITUTION:The mixed fluid 5 supplied through a mixed fluid passage 6 is forcibly changed in its direction by the distribution plate 7 in a mixer 3 and, since the mixed fluid 5 is ejected to the flow of a main fluid 1 from the jet orifices 4 of the respective chambers of the mixer 3 in the direction crossing the flow direction of the main fluid 1 of the mixer 1 at a right angle, the pressure loss on the side of the mixed fluid and the main fluid can be reduced. The mixed fluid 5 ejected from the inclined downstream wall surface 3b of the mixer 3 is diffused widely in the lateral direction of a main fluid passage 2 in a drawing to meet with the main fluid 1 to accelerate the uniformization of the distribution in the lateral direction of the main fluid passage 2. The inlet distribution plate 8 disposed between the chambers has effect not generating peeling in the flow of the mixed fluid at the inlet part of the mixer 3 and the pressure loss on the side of the mixed fluid can be reduced.

8. 发明专利

JP2002221303A METHOD OF MEASURING FURNACE INTERIOR SIDE TEMPERATURE OF MEMBRANE PANEL 失效
公开(公告)号：JP2002221303A
公开(公告)日：2002-08-09
申请号：JP2001016216
申请日：2001-01-24
申请人： BABCOCK HITACHI KK
发明人： HASHIMOTO MASAMITSU , IGUCHI YUJI
IPC分类号： F22B37/38 , F22B37/10
摘要： PROBLEM TO BE SOLVED: To provide a boiler structure which is high in reliability or requires little maintenance by accurately and inexpensively grasping the temperature distribution in the whole furnace wall of a boiler by measuring the surface temperature of a membrane panel on the furnace interior side with accuracy by using the surface temperature of the panel on the outside of the furnace. SOLUTION: The temperature distribution in the membrane panel is calculated through numerical analysis, such as the finite element method, etc., by variously changing the shape of the panel, such as the dimensions, etc., of heat exchanger tubes 1 and thermal boundary conditions, such as heat transfer, radiation, etc., on the furnace interior side and stored as a data base. Then a multiple recurrence formula is found by using the temperatures at a plurality of temperature measuring points (where thermometers 5 are installed) on the furnace exterior side as independent variables and a surface temperature to be found on the furnace interior side as a dependent variable by using the data base. Finally, an arbitrary surface temperature to be found on the furnace interior side is estimated by substituting an actually measured surface temperature on the furnace exterior side into the multiple recurrence formula.

9. 发明专利

JPH11344201A METHOD OF OPERATING OIL-BURNING OR COAL-BURNING BOILER 失效
公开(公告)号：JPH11344201A
公开(公告)日：1999-12-14
申请号：JP15457198
申请日：1998-06-03
申请人： BABCOCK HITACHI KK
发明人： IGUCHI YUJI
IPC分类号： F22B37/00
摘要： PROBLEM TO BE SOLVED: To provide a method of repairing a heating tube of an oil-burning or coal-burning boiler, which is able to shorten a time when output variation becomes unstable even in the case where a part of a heating tube of a superheater or a reheater is exchanged. SOLUTION: When a part of a heating tube is changed with a new one, a fuel having large content of ash 21 is used during a predetermined period or until the fuel consumption becomes a predetermined amount. Then, the ash 21 selectively attaches to the surface of a new heating tube 15a, so that heat transfer property of the new heating tube 15a becomes the same level as that of an old heating tube 15b in a short time. As a result, the boiler characteristics are reinstated to the state before the heating tube is exchanged in a short time, and therefore the time when output variation becomes unstable can be shortened. In addition, the thermal efficiency can be prevented from being lowered.

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