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    • 2. 发明专利
    • 蒸気タービン設備
    • 蒸汽涡轮机系统
    • JP2015090087A
    • 2015-05-11
    • JP2013229512
    • 2013-11-05
    • 三菱日立パワーシステムズ株式会社
    • 高橋 佑介李 宏元緒方 康二小笠原 望
    • F01D25/00F01D17/10F01D17/22F01D17/24F01D25/24
    • F01K7/165F01D1/023F01D17/105F01D17/145F02C9/18F05D2260/606
    • 【課題】定格発電出力での運転時における発電効率の向上と、電力需要の変動に基づく発電出力の急峻な調整を両立することができる蒸気タービン設備を提供する。 【解決手段】ボイラ1と、ボイラ1から蒸気タービンに通じる主蒸気管2に設けられた蒸気加減弁4と、主蒸気管2から蒸気加減弁4をバイパスして、主蒸気管2よりも蒸気タービンの低圧側につながるオーバーロード蒸気管5に設けられたオーバーロード弁6と、オーバーロード蒸気管5から流出した蒸気が蒸気タービン段落部に流入する際に通過するスリット部31とを備え、このスリット部31のタービンロータ15の軸方向における幅Cが、オーバーロード蒸気管5の内径dよりも小さく(d>C)なるよう構成された。 【選択図】 図2
    • 要解决的问题:提供一种蒸汽轮机系统,其能够在额定发电输出时实现运行时的发电效率的提高,并且基于电力需求的变化来迅速调节发电输出。解决方案:汽轮机 系统包括:锅炉1; 蒸汽调节阀4,其设置在主蒸汽管2上,该主蒸汽管2将锅炉1与蒸汽轮机连通; 设置在从蒸汽管2分支的过载蒸汽管5中的过载阀6,以绕过蒸汽调节阀4并相对于主蒸汽管2连接到蒸汽涡轮机的低压侧; 以及当蒸汽流入蒸汽涡轮级时从过载蒸汽管5排出的蒸汽通过的狭缝31,在涡轮转子15的轴向上的狭缝31的宽度C被设定为小于 过载蒸汽管5(d> C)。
    • 6. 发明专利
    • ELECTRIC-HYDRAULIC GOVERNOR APPARATUS
    • JPH02201003A
    • 1990-08-09
    • JP1972989
    • 1989-01-31
    • MITSUBISHI HEAVY IND LTD
    • YAMAGUCHI MASAICHIMIURA YOSHIMITSU
    • F01D17/22F01D17/24
    • PURPOSE:To improve responsibility in speed control by a method wherein pressure and temperature of vapor at an entrance of a turbine and exhaust pressure are measured respectively, compensation coefficients with respect to the respective measure values are calculated and speed calculation set values are compensated by the respective compensation coefficients. CONSTITUTION:When applied in a condensing turbine or the like, vapor pressure at a steam turbine entrance, temperature at the steam turbine entrance and exhaust pressure are measured by transmitters 15 to 17 respectively, and their output signals are input to function generators 21 to 23 for calculating compensation coefficients respectively. Here, compensation signals f1 to f3 indicating compensation coefficients according to the respective measured values are calculated. Then, after calculating total coefficient signal indicating total compensation coefficient (f1Xf2Xf3) by multiplying these compensation signals by multipliers 24,25, this total compensation signal is input to a compensator 28 to have a gain calculated by a speed calculator 12 (speed calculation set value) compensated. Then, according to this compensated speed calculation set value, opening degree of a governing valve 5 is controlled.
    • 7. 发明专利
    • TURBINE CONTROL DEVICE
    • JPH0261302A
    • 1990-03-01
    • JP20924488
    • 1988-08-23
    • HITACHI LTD
    • KAWAI TAKUMI
    • F01D17/22F01D17/24F01D19/00
    • PURPOSE:To enable switching of a mode without a plant fluctuation by providing a switching means to selectively feed a permanent speed variation gain output to an adder on the load setter side or an adder on the load limiter side according to a load setter follow-up mode and a load limiter follow-up mode. CONSTITUTION:A turbine control device 22 determines a load signal PG by adding a load set signal from a load setter 34 and a permanent speed variation gain output from a computer 33 by means an adder 35. The load signal is compared with a load limit value PL set by a load limiter 36 by means of a lowland priority circuit 37, and a signal for the one, being lower, of the two values produces a final load signal P. By means of the load signal P, a lower limit valve 3 and other valve are controlled through load distributors 38 and 42. In this case, a change-over switch 58 is situated to the output end of a permanent speed variation limiter 36, and an adder 59 is situated to the output end of the load limiter 36. An output from a permanent speed variation computer 33 is selectively added to an output from the load setter 34 or an output from the load limiter 36.
    • 10. 发明专利
    • CONTROL SYSTEM FOR MIXED PRESSURE STEAM TURBINE
    • JPS60175708A
    • 1985-09-09
    • JP3329484
    • 1984-02-23
    • TOSHIBA KK
    • KAWATE MASANAO
    • F01D17/22F01D17/24
    • PURPOSE:To utilize effectively energy by opening high and low pressure controlling valves in the same direction with steam pressure in a high pressure side steam generator and closing the low pressure controllong valve when the steam pressure in a low pressure side steam generator is lower than a set value after opening both valves. CONSTITUTION:A first pressure regulator 14 is connected to a high pressure steam generator 1 in a mixed pressure steam turbine through a lead pipe 1a, and a main governor 10 is connectively interlocked with said regulator 14 through a linkage. Also, a second pressure regulator 15 is connected to a low pressure steam generator 5 through a lead pipe 5a and connectively interlocked with a correction control unit 16 which in turn is connectively interlocked with the main governor 10 through the linkage. A transmission section 16c of said unit 16 is connected to a position-oil presure coverter 11 having high and low pressure converting portions 11a and 11b connected to high and low pressure controlling valves 12 and 13 so that the low pressure controlling valve 13 is closed when pressure in the steam generator 5 is lower than a set pressure.