-
1.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。
-
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。
-
3.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。
-
公开(公告)号：US4892118A
公开(公告)日：1990-01-09
申请号：US714348
申请日：1985-03-21
CPC分类号： F16K47/02 , F01D17/145 , F16K47/04 , Y10T137/86734 , Y10T137/86791 , Y10T137/86968
摘要： Slotted, fluid-flow dividing therefor employed in a fluid valve not only to reduce noise but also to shift the frequency spectrum of the noise energy. The slotted therefor is formed integrally with the valve seat. Additionally, the cross-sectional shape of the slots may be varied to more precisely control the lift characteristic of the valve.
摘要翻译： 在流体阀中使用的开槽，流体分流不仅可以降低噪声，而且可以移动噪声能量的频谱。 其开槽部与阀座一体形成。 此外，槽的横截面形状可以改变以更精确地控制阀的升程特性。
-
公开(公告)号：US4446377A
公开(公告)日：1984-05-01
申请号：US374416
申请日：1982-05-03
摘要： A low collapse speed, self priming, lubricating oil pumping system for a turbomachine, operatively driven by the turbine main shaft, is disclosed. In a preferred form, the invention includes a permanent magnet generator operatively coupled to shaft of the turbine-generator or turbomachine being lubricated and driven thereby to produce an electrical output; an induction motor directly connected to the electrical output of the permanent magnet generator without intervening protective devices such as fuses, switches, and so forth; and a positive displacement pump located in or in proximity to an oil reservoir and driven by the induction motor to pump oil from the reservoir at a flow rate and pressure sufficient to supply oil to the turbine-generator or turbomachine during all operating phases thereof during which lubrication is required.
摘要翻译： 公开了一种用于由涡轮主轴可操作地驱动的用于涡轮机的低塌陷速度，自吸式润滑油泵送系统。 在优选形式中，本发明包括可操作地联接到涡轮发电机或涡轮机的轴的永磁发电机，其被润滑和驱动从而产生电输出; 直接连接到永磁发电机的电输出的感应电动机，而不需要诸如保险丝，开关等的保护装置; 以及位于油储存器中或附近的容积式泵，其由感应电动机驱动，以在其所有操作阶段期间以足以将油供应到涡轮发电机或涡轮机的流量和压力从储存器泵送油，在此期间， 需要润滑。
-
6.发明授权
公开(公告)号：US4280060A
公开(公告)日：1981-07-21
申请号：US157348
申请日：1980-06-09
IPC分类号： F01D17/24 , F01D15/00 , F01D17/00 , F01D17/02 , F01D19/00 , F01D21/00 , F01D25/26 , F01K7/38 , F01K13/00 , F01K13/02 , F22B20060101 , G05B13/00 , G05B13/02 , G05B15/00 , G05B19/00 , G09B15/00 , H02P9/04
CPC分类号： F01D17/24 , F01D17/26 , F01K13/02 , F02G2250/12 , F05D2220/31
摘要： A dedicated supervisory control system for a steam turbine-generator comprising a hierarchy of microcomputer subsystems interactive with a conventional analog electrohydraulic control system to provide control and monitoring capabilities during all operating phases of the turbine-generator. The separate microcomputer subsystems are programmed for coordinated interaction and communication through shared, dual-port read/write memory units and each microcomputer subsystem is programmed and configured to handle a separate group of control responsibilities in a distributed control system. The microcomputer hierarchy includes an input and calculations computer having means for interfacing with analog input data sources and sensors which report on various operating parameters of the turbine-generator and from which thermal and mechanical stress and other derived quantities are calculated; a display and communications computer adapted to interface with a plant computer and with an operator control panel and other display and readout devices whereby operating personnel may interact with the control system; and a control computer, standing at the top of the hierarchy, for receiving information from the other computers, for making decisions based on that information and, through input/output ports, for providing the electrohydraulic control system with directions for optimal control of the turbine-generator within its thermal and mechanical limitations. The dedicated supervisory controller provides a plurality of operating modes.
摘要翻译： 一种用于蒸汽涡轮发电机的专用监控系统，包括与常规模拟电液控制系统交互的微机子系统的层级，以在涡轮发电机的所有运行阶段提供控制和监测能力。 单独的微计算机子系统被编程为通过共享的双端口读/写存储器单元进行协调的交互和通信，并且每个微机子系统被编程和配置为在分布式控制系统中处理单独的一组控制责任。 微机层级包括输入和计算计算机，其具有用于与模拟输入数据源进行接口的装置和报告涡轮发电机的各种运行参数的传感器，并计算出热和机械应力和其他导出量; 显示和通信计算机，其适于与工厂计算机以及操作员控制面板和其他显示和读出装置接口，由此操作人员可与控制系统相互作用; 以及位于层次结构顶部的控制计算机，用于从其他计算机接收信息，用于基于该信息做出决定，并且通过输入/输出端口为电液控制系统提供用于涡轮机的最佳控制的方向 - 发电机在其热和机械限制下。 专用监控控制器提供多种操作模式。
-
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。
-
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。
-
9.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。
-
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。
-
-
-
-
-
-
-
-
-
搜索结果
13 条记录 (耗时 0.015 秒)