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1. 发明专利

JPH11337055A FORCED DRAFT BOILER APPARATUS 失效
公开(公告)号：JPH11337055A
公开(公告)日：1999-12-10
申请号：JP14579498
申请日：1998-05-27
申请人： BABCOCK HITACHI KK
发明人： MORIO MASARU , IGAUE KATSUHIKO , TAMAI HIDEAKI
IPC分类号： F23N3/02 , F23L3/00
摘要： PROBLEM TO BE SOLVED: To safety operate a boiler by stably assuring boiler encapsulated air pressure required for a boiler. SOLUTION: In a boiler apparatus in which part of combustion air from a forced draft fan 1 is extracted to supply boiler encapsulated air to a boiler opening portion 13, an extrusion fan outlet damper 14 is disposed at an outlet portion of the forced draft fan 1, and a boiler encapsulated air line 10 is formed, which is branched between the forced draft fan 1 and the forced draft fan outlet damper 14 and is communicated with the boiler opening portion 13. An opening of the forced draft fan outlet damper 14 is adjusted in response to a boiler load such a that even in a low load area of the boiler the boiler encapsulated air pressure is above predetermined sealing pressure.

2. 发明专利

JPH11333251A METHOD AND DEVICE FOR REGULATING AMOUNT OF AMMONIA TO BE INJECTED OF DENITRATION APPARATUS 失效
公开(公告)号：JPH11333251A
公开(公告)日：1999-12-07
申请号：JP14449698
申请日：1998-05-26
申请人： BABCOCK HITACHI KK
发明人： NISHIMURA YUJI , MORIO MASARU , TAMAI HIDEAKI
IPC分类号： B01D53/56 , B01D53/74 , B01D53/86 , B01D53/94
摘要： PROBLEM TO BE SOLVED: To provide a method for regulating the amount of NH3 of a denitration apparatus which can reduce regulating elements for decreasing the deviation of the measure value of NOx at the outlet of the denitration apparatus from a set value and find out an optimum amount of NH3 for correction. SOLUTION: This apparatus is equipped with a means for obtaining a total amount of NOx from a gas flow rate at the inlet of a denitration apparatus and the output of an NOx meter at the inlet, an operation part for obtaining a necessary mole ratio from NOx concentrations at the inlet and outlet of the denitration apparatus, a means for obtaining the amount of NH3 to be injected from the total amount of NOx and the necessary mole ratio, a one step differential circuit for obtaining a bias value of NH3 to be injected precedingly which is added only when a load is changed, and a flow-regulating valve for NH3 regulated on the basis of the bias value and the amount of NH3 to be injected. At the start of the change of the load based on a load command, the amount of NH3 to be injected is corrected by operating a flow regulating valve 2 for the amount of NH3 in one stroke to a valve travel through a setting device 17a which sets up a valve travel corresponding to each load in advance at the arrival of the change of the load.

3. 发明专利

JPH11223302A AUTOMATIC CONTROL DEVICE AND METHOD OF POWER GENERATING PLANT 失效
公开(公告)号：JPH11223302A
公开(公告)日：1999-08-17
申请号：JP2822098
申请日：1998-02-10
申请人： BABCOCK HITACHI KK
发明人： TAMAI HIDEAKI , KAWASE TAKAYO
IPC分类号： F01K13/02 , F22B35/00
摘要： PROBLEM TO BE SOLVED: To secure a system frequency correcting range through governor-free function even in a boiler having a large time constant of a boiler outlet port pressure change with respect to the input command of the boiler, and contribute to the maintenance of a margin in the operation of a power plant. SOLUTION: An automatic power plant controller is provided with boiler/ turbine cooperative control function wherein the amount of fuel, the amount of feed water and the amount of air are controlled by the input of a boiler load requiring signal produced based on a power generating amount command 1 from a central power supplying system, while a turbine governor is controlled based on a turbine output command 18 produced based on the power generating amount command 1 from the central power supplying system. Such an automatic power plant controller is provided with a correcting means for adding a boiler load requirement correcting fundamental signal due to a system frequency difference 5, or a signal produced by multiplying a correcting value produced through the input of the power generating amount command 1 by the boiler load requirement correcting fundamental signal.

4. 发明专利

JPH11530A AMMONIA INJECTION CONTROLLER FOR DENITRATION REACTOR 失效
公开(公告)号：JPH11530A
公开(公告)日：1999-01-06
申请号：JP15527897
申请日：1997-06-12
申请人： BABCOCK HITACHI KK
发明人： TAMAI HIDEAKI , MORIO MASARU , NISHIMURA YUJI
IPC分类号： B01D53/56 , B01D53/74 , B01D53/94
摘要： PROBLEM TO BE SOLVED: To make it possible to suppress the NOx concn. in the outlet of a denitration reactor to an already set value or below by providing the apparatus with means for detecting a frequency in precedence to a rapid change in the NOx concn. in the gas to be treated by a frequency fluctuation and correcting the injection rate of ammonia by increasing or decreasing this rate. SOLUTION: This ammonia injection controller has the injection rate correcting means 59 for correcting the necessary ammonia flow rate signal 35 by increasing or decreasing the same in correspondence to the fluctuation rate of the frequency in precedence to the rapid change in the NOx concn. in the gas to be treated by the fluctuation in the frequency. This means previously calculates the corresponding load fluctuation rate in accordance with the fluctuation rate of the frequency fluctuation by a differentiator 62 from the AFC signal 61 transmitted by an AFC command 60 and the upper and lower limit values of the load fluctuation rate is limitted by an upper and lower limiter 63. A load command signal 52 based on a DPC command or ALR command with respect to this signal 64 is multiplied by a multiplier 65 to form an increase/decrease correction signal 66 for the ammonia injection rate, by which the bias correction of the necessary ammonia flow rate signal 35 is executed. As a result, the correction of the ammonia injection rate is added.

5. 发明专利

JPH09264501A METHOD FOR CONTROLLING BOILER FUEL IN WASTE GAS RECOMBUSTION COMBINED CYCLE AND APPARATUS THEREFOR 失效
公开(公告)号：JPH09264501A
公开(公告)日：1997-10-07
申请号：JP7227296
申请日：1996-03-27
申请人： TOKYO ELECTRIC POWER CO , BABCOCK HITACHI KK
发明人： SASAMOTO ETSUJI , MORIKAWA HIDEFUMI , MORIKAWA KOICHI , TAMAI HIDEAKI , MORIO MASARU , MIYAKE MORIJI , OSHIMA HIROSHI
IPC分类号： F22B1/18 , F22B35/00
摘要： PROBLEM TO BE SOLVED: To prevent boiler vapor temperature control from being retarded even when a gas turbine load is changed. SOLUTION: The amount of heat of combustion air entering a boiler is estimated on the basis of an air flow rate (by a flow rate meter 21) through a boiler window box 10 and temperature (by a thermometer 20), with which amount of heat a boiler fuel amount instruction signal is corrected. With this correction the total amount of input heat of the boiler can be coincident with that required for the boiler. Thus, temperature of the boiler is prevented from being varied beyond a specified range.

6. 发明专利

JPH045865B2 失效
公开(公告)号：JPH045865B2
公开(公告)日：1992-02-03
申请号：JP6329384
申请日：1984-04-02
申请人： BABCOCK HITACHI KK
发明人： OGAUCHI TOSHIO , TAMAI HIDEAKI
IPC分类号： F16K1/40 , F16K47/04

7. 发明专利

JPS61270577A HEAT INSULATION TYPE VALVE DEVICE 失效
公开(公告)号：JPS61270577A
公开(公告)日：1986-11-29
申请号：JP10926385
申请日：1985-05-23
申请人： BABCOCK HITACHI KK
发明人： OGAUCHI TOSHIO , TAMAI HIDEAKI , SASAKI MASAO
IPC分类号： F16K49/00 , F01K7/22
摘要： PURPOSE:To aim at reducing heat loss, by arranging a pipe line through which a bypass stream flows, in the vicinity of a control valve, and by recovering the fluid of the bypass stream into a lower pressure system. CONSTITUTION:The fluid of a bypass stream in a pipe line 33 laid in the vicinity of valve 34, 35 and an outlet pipe line 36, heats the valves 34, 35 and the outlet pipe line 36, indirectly. With this arrangement, the fluid whose temperature has been slightly lowered, is led into a low pressure system from the pipe line 33, and therefore the recovery of heat may be made, thereby it is possible to reduce heat loss.

8. 发明专利

JPH03170720A PROTECTIVE DEVICE FOR COMBUSTION 失效
公开(公告)号：JPH03170720A
公开(公告)日：1991-07-24
申请号：JP31140889
申请日：1989-11-29
申请人： BABCOCK HITACHI KK
发明人： OGAUCHI TOSHIO , TAMAI HIDEAKI , SUGANO AKIRA , YAMAJI YASUHIRO
IPC分类号： F23N1/02 , F23N5/24
摘要： PURPOSE:To protect combustion definitely and prevent error operation as well by cutting off the supply of combustion based on one of the following cases, say, either when an air flow rate detection value drops to a setting value where combustion fails to continue based on an air/fuel ratio of when the air flow rate detection value drops to the minimum set air flow rate. CONSTITUTION:The ratio between a fuel flow rate and an air flow rate is computed. Then, the results of the computation are output as air fuel ratio signals 21 to 23. The signals below a stipulated signal value are picked up as a contact signal by an air fuel ratio drop detector 5. An air flow rate lower limit detector 6 is installed for air flow rate signals 24 to 26 and those below a stipulated flow rate value are picked up as a contact signal. If either two contacts among three contacts are operated based on these both contact signals, an AND circuit 14 which carries out a unit tip, will be formed so that the unit trip may take place by an OR circuit 16 even when operated twice based on either contact. This construction makes it possible to protect a combustion device and prevent serious accidents.

9. 发明专利

JPH03277885A HIGH DIFFERENTIAL PRESSURE FLUID CONTROL VALVE 失效
公开(公告)号：JPH03277885A
公开(公告)日：1991-12-09
申请号：JP7342390
申请日：1990-03-26
申请人： BABCOCK HITACHI KK
发明人： TAMAI HIDEAKI , OGAUCHI TOSHIO
IPC分类号： F16K47/02
摘要： PURPOSE:To effectively prevent the abrasion of a fluid cut-off part by the high speed fluid on the downstream side of a control valve by installing a cut-off part for fluid on the upstream side from a flow rate control part for the fluid. CONSTITUTION:The cut-off part 10 of a high differential pressure control valve is positioned on the upstream side from a fluid passing area varying part (contraction flow part) 12. Accordingly, when flow rate is controlled by allowing fluid to pass, the large energy due to the collision of the high speed fluid which is generated on the downstream side of the fluid area varying part 13 is not transmitted to the cut-off part 10. Accordingly, the abrasion of the fluid cut-off part 10 can be reduced. Accordingly, the cut-off part 10 of the fluid control valve does not suffer the abrasion due to the erosion (corrosion) of the high speed fluid, and the high temperature and high differential pressure fluid can be cut off surely.

10. 发明专利

JP2008039224A Structure of constant pressure once-through boiler and operating method therefor 审中-公开
标题翻译：恒压锅炉的结构及其运行方法
公开(公告)号：JP2008039224A
公开(公告)日：2008-02-21
申请号：JP2006211333
申请日：2006-08-02
申请人： Babcock Hitachi Kk , バブコック日立株式会社
发明人： MIGAKI HITOSHI , TAMAI HIDEAKI
IPC分类号： F22B29/06 , F22B37/38
摘要： PROBLEM TO BE SOLVED: To specify a part where output pressure of the primary superheater of a constant pressure once-through boiler is suddenly increased, and to provide countermeasures therefor. SOLUTION: In the start bypass system of a once-through boiler and an operating method therefor, cleaning timing or replacement timing for a resistor tube 22, or cleaning timing or replacement timing for a primary superheater bypass valve 23 is predicted on the basis of a deviation of pressure in each of tubes measured by a pressure gauge 35 in the outlet of the primary superheater 13 and a pressure gauge 36 between the resistor tube 22 and the primary superheater valve 23, or a deviation of pressure in each of tubes measured by the pressure gauge 36 between the resistor tube 22 and the primary superheater bypass valve 23 and a pressure gauge 37 in the outlet of the primary superheater bypass valve 23. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：规定恒压直流锅炉的初级过热器的输出压力突然增加的部分，并提供对策。解决方案：在直流锅炉的启动旁路系统及其操作方法中，预测电阻管22的清洗时间或更换时间，或初级过热器旁通阀23的清洗定时或更换定时通过一次过热器13的出口处的压力计35和电阻管22与主过热器23之间的压力计36测量的每个管中的压力偏差的基础，或每个管中的压力偏差由电阻管22和主过热器旁通阀23之间的压力计36和主过热器旁通阀23的出口处的压力计37测量。版权所有（C）2008，JPO＆INPIT

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