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公开(公告)号：US4853552A
公开(公告)日：1989-08-01
申请号：US175079
申请日：1988-03-30
CPC分类号： F01D17/04
摘要： A signal representing the electrical output power of a steam turbine-generator is fed back to a control system. A signal representing the boiler steam pressure is also fed to the control system. A control signal for controlling valves feeding steam to the steam turbine is gain controlled between one and zero in the presence of a negative rate of change of steam pressure less than a predetermined value. At other negative and all positive values of rate of change of steam pressure, the control signal is unaffected. In one embodiment, a linear relationship is employed for controlling the gain for increasingly negative values of the rate of change of steam pressure. At an extreme negative value, the gain is controlled to zero, whereby the a load reference signal remains unchanged.
摘要翻译： 表示蒸汽涡轮发电机的电力输出功率的信号反馈给控制系统。 表示锅炉蒸汽压力的信号也被馈送到控制系统。 用于控制向蒸汽涡轮机供给蒸汽的阀的控制信号在小于预定值的蒸汽压力的负变化率的情况下被增益控制在1和0之间。 在蒸汽压力变化率的其他负值和所有正值时，控制信号不受影响。 在一个实施例中，采用线性关系来控制增益对于蒸汽压力变化率越来越负的值。 在极端负值时，增益被控制为零，从而负载参考信号保持不变。
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2.发明授权
公开(公告)号：US5042246A
公开(公告)日：1991-08-27
申请号：US431892
申请日：1989-11-06
摘要： A method for starting and loading a combined cycle turbine of the type having a gas turbine with a fuel flow control valve and a steam turbine with at least one steam control valve both disposed on a single shaft and having a heat recovery steam generator heated by said gas turbine and connected to supply steam to the steam control valve, the combined cycle turbine having a unified control system and driving a load and also having an auxiliary steam source connected to the steam control valve. The improved method comprises starting and cranking the combined unit by controlling steam from the auxiliary steam source with the steam control valve, initiating and controlling fuel flow to the gas turbine with the fuel flow control valve, initiating combustion, controlling acceleration of the combined unit with the steam control valve, transferring acceleration control of the combined unit to the gas turbine fuel flow control valve, and accelerating the combined unit to rated speed. The method further includes the steps of synchronizing the combined unit to the line, substituting steam from the heat recovery steam generator for that from the auxiliary steam source, and opening said steam control valves to a full open position.
摘要翻译： 一种用于启动和装载具有燃气轮机的类型的组合循环涡轮机的方法，所述燃气轮机具有燃料流量控制阀和具有至少一个蒸汽控制阀的蒸汽涡轮机，两个蒸汽控制阀均设置在单个轴上并且具有由所述热交换器加热的热回收蒸汽发生器 燃气轮机并连接以向蒸汽控制阀供应蒸汽，联合循环涡轮具有统一的控制系统并驱动负载，并且还具有连接到蒸汽控制阀的辅助蒸汽源。 改进的方法包括通过利用蒸汽控制阀控制来自辅助蒸汽源的蒸汽来启动和启动组合单元，利用燃料流量控制阀启动和控制到燃气轮机的燃料流，开始燃烧，控制组合单元的加速度 蒸汽控制阀，将组合单元的加速控制传递到燃气轮机燃油流量控制阀，并将组合单元加速到额定转速。 该方法还包括以下步骤：将组合的单元与管线同步，替换来自辅助蒸汽源的热回收蒸汽发生器的蒸汽，以及将所述蒸汽控制阀打开到完全打开位置。
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公开(公告)号：US4104908A
公开(公告)日：1978-08-08
申请号：US843965
申请日：1977-10-20
CPC分类号： G01M15/00
摘要： A method and apparatus is disclosed for determining whether certain rotor stress values are exceeded during the thermal cycle of a turbomachine. The invention takes into account the rotor material and the behavioral characteristics of the rotor material above and below the Fracture Appearance Transition Temperature (FATT). The acquired data is stored to develop a rotor history useful in determining a rotor condition for maintenance and longevity purposes and further useful in determining the operating pattern of the turbomachine.
摘要翻译： 公开了一种用于确定在涡轮机的热循环期间是否超过某些转子应力值的方法和装置。 本发明考虑了转子材料和断裂外观转变温度（FATT）之上和之下的转子材料的行为特性。 存储所获取的数据以开发用于确定用于维护和寿命目的的转子条件的转子历史，并且还可用于确定涡轮机的操作模式。
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公开(公告)号：US4891948A
公开(公告)日：1990-01-09
申请号：US814279
申请日：1985-12-23
申请人： Jens Kure-Jensen , Harris S. Shafer
发明人： Jens Kure-Jensen , Harris S. Shafer
摘要： A thermal performance monitor informs the operator and result's engineer of the economic losses, efficiencies, deviation in heat rates and power losses of operating a steam turbine-generator system at its controllably selected pressure and temperature. Specifically temperature and pressure signals are generated at various points in the system along with the control valve position signal and the electric output signal from the electric generator. This data is processed along with the corresponding design values and the economic losses due to temperature deviation, pressure deviation and exhaust pressure deviation from design are calculated. Other calculations produce a comparison of efficiencies of the turbines in the system and consequential power losses.
摘要翻译： 热性能监测器向操作员和结果工程师通报在其可控选择的压力和温度下操作蒸汽轮机 - 发电机系统的经济损失，效率，热速率和功率损耗的偏差。 具体地，系统中的各个点产生温度和压力信号以及来自发电机的控制阀位置信号和电输出信号。 该数据与相应的设计值一起处理，并计算由于温度偏差，压力偏差和排气压力偏离设计造成的经济损失。 其他计算可以比较系统中涡轮机的效率和后果的功率损耗。
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5.发明授权Method of operating a combined cycle steam and gas turbine power generating system with constant settable droop 失效操作具有恒定可设定下垂的联合循环蒸汽和燃气轮机发电系统的方法
公开(公告)号：US5555719A
公开(公告)日：1996-09-17
申请号：US196916
申请日：1994-02-15
申请人： William I. Rowen , Jens Kure-Jensen
发明人： William I. Rowen , Jens Kure-Jensen
CPC分类号： F01K23/101 , F01K23/16 , F05B2200/12 , Y02E20/16
摘要： A method of operating a combined-cycle gas and steam turbine power generating system on a single shaft 16 uses as a feedback to the speed control or governor a signal 22 representing the total power output of the generator less the total output of the steam turbine 12, which is then correlated with the error signal between the actual and reference speeds to alter the fuel flow to the gas turbine. By compensating the measured generator output by subtracting a value 24 representative of the steam turbine output so that the compensated signal 26 represents the contribution of only the gas turbine 10 to the generator output, a constant settable droop speed control system may be used in a single-shaft combined-cycle steam turbine and the gas turbine system to compensate for variable heating fuel value and/or changing combustion efficiency in dry low NO.sub.x combustion systems.
摘要翻译： 在单个轴16上操作联合循环燃气和蒸汽轮机发电系统的方法使用速度控制或调速器的反馈信号，代表发电机的总功率输出的信号22减去蒸汽轮机12的总输出 ，其然后与实际速度和参考速度之间的误差信号相关联，以改变燃气轮机的燃料流量。 通过减去表示蒸汽涡轮机输出的值24来补偿所测量的发电机输出，使得补偿信号26仅表示燃气轮机10对发电机输出的贡献，可以将恒定的可设定下降速度控制系统用于单个 轴联合循环蒸汽轮机和燃气轮机系统，以补偿干燥低NOx燃烧系统中的可变加热燃料值和/或改变燃烧效率。
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公开(公告)号：US4318179A
公开(公告)日：1982-03-02
申请号：US155379
申请日：1980-06-02
申请人： Jens Kure-Jensen , Adrian Missana
发明人： Jens Kure-Jensen , Adrian Missana
摘要： An apparatus for continuously monitoring the alignment condition of a thrust bearing based on a pair of temperature differences is adapted to utilize either analog or digital means. The monitor is particularly applicable for use in large turbines, particularly those coupled to generators for the production of electric power. Bearing misalignment and other variables are determined from temperature measurements of the oil feed temperature and from two temperature measurements made on diametrically opposite portions of the bearing surface. The apparatus of the present invention is made possible by observed predetermined relations between certain computed temperature differences which relate bearing thrust and misalignment moment and which also relate minimum oil film thickness and actual misalignment slope.
摘要翻译： 基于一对温差连续地监测推力轴承的对准状态的装置适于采用模拟或数字方式。 该显示器特别适用于大型涡轮机，尤其适用于与用于生产电力的发电机连接的大型涡轮机。 轴承未对准和其他变量由油进料温度的温度测量以及在轴承表面的直径相对部分上进行的两个温度测量确定。 本发明的装置可以通过观察到关于轴承推力和不对中力矩的某些计算温度差之间的预定关系，并且还涉及最小油膜厚度和实际的未对准斜率。
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公开(公告)号：US5870896A
公开(公告)日：1999-02-16
申请号：US964948
申请日：1997-11-05
CPC分类号： F16K47/08 , F16K1/22 , Y10T137/86734 , Y10T137/87917
摘要： A combined control/stop valve assembly for use in steam cycle plants which include at least one steam turbine, the valve assembly including a butterfly valve having a valve plate pivotable about a first axis, and a stop valve located downstream and adjacent the butterfly valve, the stop valve having a cylindrical strainer with a longitudinal axis substantially perpendicular to the first axis, the strainer having a solid portion facing the butterfly valve.
摘要翻译： 一种用于蒸汽循环设备的组合式控制/截止阀组件，其包括至少一个蒸汽轮机，所述阀组件包括具有可围绕第一轴线枢转的阀板的蝶形阀和位于蝶阀下游并邻近蝶阀的截止阀， 所述截止阀具有圆柱形过滤器，其具有基本上垂直于所述第一轴线的纵向轴线，所述过滤器具有面向所述蝶阀的实心部分。
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公开(公告)号：US4343454A
公开(公告)日：1982-08-10
申请号：US163332
申请日：1980-06-26
IPC分类号： F16K31/12 , F01D17/26 , F01D21/20 , F15B13/043 , F16K31/124
摘要： Apparatus for individually isolating the hydraulic actuators of steam valves for a steam turbine while the turbine remains in operation and while all other steam valves associated with the turbine remain functional. Isolation is achieved by providing a manual isolation valve for blocking the flow of hydraulic fluid from a main supply; a flow restrictor to limit the inflow of hydraulic fluid; and a flow direction control means to limit hydraulic fluid to flow only from the actuator toward an emergency trip hydraulic fluid supply.
摘要翻译： 用于在涡轮机保持运行期间以及与涡轮机相关联的所有其它蒸汽阀保持功能的情况下，用于单独隔离用于蒸汽轮机的蒸汽阀的液压致动器的装置。 隔离是通过提供一个手动隔离阀来实现的，用于阻止来自主电源的液压流体的流动; 限流器限制液压油的流入; 以及流动方向控制装置，用于限制液压流体仅从致动器流向紧急跳闸液压流体供应源。
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公开(公告)号：US4001654A
公开(公告)日：1977-01-04
申请号：US600835
申请日：1975-07-31
CPC分类号： H02H3/044 , F01D21/20 , F16P3/20 , G07C3/00 , Y10T307/76
摘要： A testable protective system for an operating system is provided with redundant trip components serially connected to redundant lock-out components. The trip components are signalled by fault sensors which monitor critical conditions of the operating system. These trip components produce an output indicative of such conditions, which output is fed to certain actuated devices which may either correct the condition or shut down the operating system until the cause of the problem can be determined and the necessary repairs made. When it is desired to test one of these trip components, the operator activates the corresponding lock-out component and performs the necessary test. The activation of this lock-out component has an effect of making the protective system output signal (the output to the actuated devices to correct the fault or shut the system down) independent of the output of that trip component when it is being tested. Should an operator mistakenly activate both lock-out components at once, the protective system output signal is a function only of the fault sensor input to a first trip component and a driving signal to the protective system. Thus, even if both lock-out components are activated at once, a fault signal to the first trip component will effect a fault output signal from the protective system to the actuated devices.
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10.发明授权Overspeed anticipation and control system for single shaft combined cycle gas and steam turbine unit 失效单轴联合循环燃气和蒸汽轮机单元的超速预期和控制系统
公开(公告)号：US5301499A
公开(公告)日：1994-04-12
申请号：US544983
申请日：1990-06-28
IPC分类号： F01D15/10 , F01D17/04 , F01D17/24 , F01D21/02 , F01K13/00 , F01K23/10 , F01K23/16 , F02C6/00 , G05D13/62 , F02C6/18
CPC分类号： F01K23/16 , F01K23/108 , F05B2200/11 , Y02E20/16
摘要： A system and method for anticipating and controlling overspeed in a combined cycle turbine of the type having a gas turbine with a fuel flow control valve and a steam turbine with at least one steam control valve both disposed on a single shaft and having a heat recovery steam generator heated by said gas turbine and connected to supply steam to the steam control valve, the combined cycle turbine having a unified control system and driving a load. Below a preselected shaft speed the gas turbine fuel command signal controls power. Above the preselected shaft speed the steam turbine speed signal also controls power. Anticipation of overspeed under severe transient load changes, such as loss of electrical load, is provided by a power load unbalance system, wherein gas turbine power and steam turbine power responsive signals are summed after proportionately scaled power responsive signals exceed load by a preselected amount, whereby appropriate action is taken to reduce power before significant overspeed can occur.
摘要翻译： 一种用于预期和控制具有带有燃料流量控制阀的燃气轮机的类型的联合循环涡轮机中的超速的系统和方法，以及具有至少一个蒸汽控制阀的蒸汽涡轮机，两个蒸汽控制阀均设置在单个轴上并具有热回收蒸汽 发电机由所述燃气轮机加热并连接以向蒸汽控制阀供应蒸汽，所述组合循环涡轮机具有统一的控制系统并驱动负载。 低于预选轴转速，燃气轮机燃油指令信号控制功率。 高于预选轴速度，蒸汽轮机速度信号也控制功率。 在电力负载不平衡系统提供诸如电力负载损失等严重瞬变负载变化下的超速预期，其中燃气轮机功率和蒸汽涡轮机功率响应信号在按比例缩放的功率响应信号以预选量超过负载后相加， 因此在发生显着的超速之前采取适当的动作来降低功率。
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