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1.发明授权Apparatus and method for improved utilization of steam-to-steam reheater drains 失效用于改善蒸汽 - 蒸汽再热器排水管的利用的装置和方法
公开(公告)号：US4825657A
公开(公告)日：1989-05-02
申请号：US149316
申请日：1988-01-28
摘要： An improved method of heating feedwater streams in a steam-to-steam reheating system for turbine generators is disclosed in which a drain cooler is located to receive the reheater drain and pass it in heat exchange relationship with the discharge of the highest pressure feedwater heater. By use of the drain cooler, heat rate improvement is effected on both single stage reheat plants and two-stage reheat plants. Cycle impairment from moisture carryover in the moisture separator/reheater is also reduced.
摘要翻译： 公开了一种在用于涡轮发电机的蒸汽 - 蒸汽再加热系统中加热给水流的改进方法，其中排水冷却器被定位成接收再热器排放并使其与最高压力给水加热器的排放处于热交换关系。 通过使用排水冷却器，对单级再热装置和两级再热装置进行热量提高。 湿气分离器/再热器中水分携带的循环障碍也减少了。
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公开(公告)号：US5377489A
公开(公告)日：1995-01-03
申请号：US930112
申请日：1992-08-14
CPC分类号： F01K7/40
摘要： A steam turbine system including a low pressure (LP) turbine has a plurality of moisture extraction points at which a steam-water mixture is extracted and passed through a respective one of a corresponding plurality of heat exchangers. Each exchanger passes the steam-water mixture in heat exchange relationship with feedwater in a feedwater conduit. A low pressure and low temperature final stage extraction point on the steam turbine is coupled to a condenser, and water collected at the condenser is directed into the feedwater conduit. The system separates at least some of the steam in the steam-water mixture from the final stage extraction point and passes this steam in heat exchange relationship with water in the feedwater conduit.
摘要翻译： 包括低压（LP）涡轮机的蒸汽涡轮机系统具有多个水分提取点，蒸汽 - 水混合物在此提取并通过相应的多个热交换器中的相应的一个。 每个交换器在给水管道中通过与给水的热交换关系的蒸汽 - 水混合物。 蒸汽涡轮机上的低压和低温末级提取点被连接到冷凝器，并且在冷凝器处收集的水被引导到给水管道中。 该系统将蒸汽 - 水混合物中的蒸汽中的至少一部分与最终级萃取点分离，并使该蒸汽与给水管道中的水热交换。
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公开(公告)号：US5079922A
公开(公告)日：1992-01-14
申请号：US609938
申请日：1990-11-07
摘要： A steam turbine system has a plurality of moisture-separator-reheaters (MSR) each connected via a respective drain line to a corresponding drain receiver. Each drain receiver includes a further drain line coupled through a flow control valve to a common line. The common line empties into a drain cooler connected at the highest pressure end of a series of feedwater reheaters. The drain cooler dumps through another flow control valve to one of the feedwater heaters. Each of the drain receivers includes a pressure sensor and liquid level sensor. A control processor monitors the pressure sensors and selects the drain receiver subjected to the lowest pressure. The processor then fully opens the valve associated with the selected drain receiver and thereafter regulates the liquid level in the others of the drain receivers by adjustment of their respective flow control valves in response to their respective level sensors. The liquid level in the selected drain receiver is adjusted to its preselected level by control of the flow control valve connected to the drain cooler. The pressure in the common drain line is regulated to the pressure at the lowest pressure drain receiver by adjustment of the control valves associated with the other drain receivers.
摘要翻译： 蒸汽涡轮机系统具有多个湿气分离器再热器（MSR），每个湿气分离器再热器通过相应的排水管线连接到相应的排水接收器。 每个漏极接收器包括通过流量控制阀耦合到公共线路的另外的排出线。 普通管路排入连接在一系列给水再热器的最高压力端的排水冷却器。 排水冷却器通过另一个流量控制阀排入给水加热器之一。 每个排水接收器包括压力传感器和液位传感器。 控制处理器监视压力传感器并选择经受最低压力的排水接收器。 然后，处理器完全打开与所选择的排水接收器相关联的阀，此后通过响应于它们各自的液位传感器调节它们各自的流量控制阀来调节排水接收器中的其它液位。 通过控制连接到排水冷却器的流量控制阀，将所选择的排水接收器中的液面调整到其预选的水平。 通过调节与其他排水接收器相关联的控制阀将普通排水管路中的压力调节到最低压力排放接收器处的压力。
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公开(公告)号：US5140818A
公开(公告)日：1992-08-25
申请号：US697373
申请日：1991-05-09
CPC分类号： F01K7/40
摘要： A steam turbine system including a low pressure (LP) turbine has a plurality of moisture extraction points at which a steam-water mixture is extracted and passed through a respective one of a corresponding plurality of heat exchangers. Each exchanger passes the steam-water mixture in heat exchange relationship with feedwater in a feedwater conduit. A low pressure and low temperature final stage extraction point on the steam turbine is coupled to a condenser, and water collected at the condenser is directed into the feedwater conduit. The system separates at least some of the steam in the steam-water mixture from the final stage extraction point and passes this steam in heat exchange relationship with water in the feedwater conduit.
摘要翻译： 包括低压（LP）涡轮机的蒸汽涡轮机系统具有多个水分提取点，蒸汽 - 水混合物在此提取并通过相应的多个热交换器中的相应的一个。 每个交换器在给水管道中通过与给水的热交换关系的蒸汽 - 水混合物。 蒸汽涡轮机上的低压和低温末级提取点被连接到冷凝器，并且在冷凝器处收集的水被引导到给水管道中。 该系统将蒸汽 - 水混合物中的蒸汽中的至少一部分与最终级萃取点分离，并使该蒸汽与给水管道中的水热交换。
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公开(公告)号：US4955200A
公开(公告)日：1990-09-11
申请号：US353364
申请日：1989-05-17
摘要： A method and apparatus for improving a steam-to-steam reheat system employing the drain cooler concept in a steam turbine is disclosed. The large and complicated drain receiver of the prior art is eliminated, thereby removing a source of unreliable performance and internal flooding of MSR bundle drains. A drain cooler is utilized and its utility enhanced by installing a condensate bypass line with control valve which is used to adjust the condensing capability of the drain cooler in order to optimize the amount of scavenging steam for varying load conditions, thereby achieving an improvement in heat rate reduction.
摘要翻译： 公开了一种用于改进在蒸汽轮机中采用排水冷却器概念的蒸汽 - 蒸汽再热系统的方法和装置。 消除了现有技术的大型和复杂的漏极接收器，从而消除了MSR束排水管的不可靠性能和内部淹没的源头。 使用排水冷却器，其效用通过安装具有控制阀的冷凝旁通管线来增强，该控制阀用于调节排水冷却器的冷凝能力，以优化用于变化负载条件的清除蒸汽的量，从而实现热量的改善 降低速度
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6.发明授权
公开(公告)号：US5018356A
公开(公告)日：1991-05-28
申请号：US597942
申请日：1990-10-10
摘要： A steam turbine system having a steam chest coupled in operating relationship to a steam turbine includes apparatus for controlled heating of the steam chest to reduce thermal stresses. A throttle valve is connected in a steam flow path between a steam source and the steam chest for regulating the flow of steam over a predetermined range of steam flow rates. A temperature sensor is coupled to the steam chest for providing signals indicative of the temperature of the steam chest. A steam leak-off line coupled to the steam chest includes a flow control valve for regulating the flow of steam from the steam chest through the leak-off line, and a controller is coupled in a controlling relationship to the throttle valve and the flow control valve for controlling the flow of steam into and out of the steam chest to effect a controlled warming of the steam chest. The controller is connected to receive the signals from the temperature sensor and is responsive to the signals for controlling warming of the steam chest.
摘要翻译： 具有与蒸汽轮机操作关系耦合的蒸汽箱的蒸汽涡轮机系统包括用于受控加热蒸汽箱以减少热应力的装置。 节气门连接在蒸汽源和蒸汽箱之间的蒸汽流路中，用于在蒸汽流量的预定范围内调节蒸汽流。 温度传感器耦合到蒸汽箱以提供指示蒸汽箱的温度的信号。 耦合到蒸汽箱的蒸汽泄漏线包括用于调节来自蒸汽箱的蒸汽流通过泄漏线的流量控制阀，并且控制器以控制关系与节流阀和流量控制 用于控制蒸汽进出蒸汽箱的流量以实现蒸汽箱的受控升温的阀。 控制器被连接以接收来自温度传感器的信号，并且响应于用于控制蒸汽箱的升温的信号。
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公开(公告)号：US4527396A
公开(公告)日：1985-07-09
申请号：US535135
申请日：1983-09-23
CPC分类号： F22B37/32
摘要： A moisture separator which incorporates an inner cylinder disposed in coaxial relation with an exhaust pipe of a steam turbine utilizes the spiral secondary flow of a gas stream to remove liquids which are entrained therein. The moisture separator incorporates an inner cylinder which has one or more apertures through its wall. The inner cylinder is placed in coaxial relation with the exhaust pipe of a steam turbine with means for sealing the axial ends of an annular chamber formed between the cylinder and the exhaust pipe. Means are provided for dividing the annular chamber into a plurality of arcuate spaces and for removing liquid which collects within each of the arcuate spaces. The moisture separator utilizes the characteristic of gas streams which creates spiral secondary flows when forced to turn around a bend. The spiral flows cause liquid, which is entrained in a gas stream, to migrate to the inner surface of a pipe or cylinder and coalesce on the walls thereof. The moisture separator utilizes these characteristics of turning streams of gas in order to separate liquid from a moisture-laden gas stream.
摘要翻译： 包括与蒸汽轮机的排气管同轴设置的内筒的水分分离器利用气流的螺旋二次流除去夹在其中的液体。 水分分离器包括一个内筒，其内壁有一个或多个孔。 内筒与蒸汽轮机的排气管同轴放置，用于密封形成在气缸和排气管之间的环形室的轴向端部。 提供了用于将环形室分成多个弧形空间并且用于去除在每个弓形空间内收集的液体的装置。 水分分离器利用气流的特性，当被迫转过弯时，产生螺旋二次流。 螺旋流引起被夹带在气流中的液体迁移到管或气缸的内表面并在其壁上聚结。 水分分离器利用这些转向气流的特性，以将液体与含水分气体气流分离。
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公开(公告)号：US4325670A
公开(公告)日：1982-04-20
申请号：US181566
申请日：1980-08-27
CPC分类号： F01D17/18
摘要： A sequence of activating and deactivating arcuate nozzle chambers which together form a structure for admitting steam into a steam turbine and directing it through turbine blades. At least one small and one large nozzle chamber are cooperatively activated and deactivated to provide maximum turbine efficiency. After minimum admission operation has been achieved, a small nozzle chamber disposed arcuately adjacent the activated nozzle chambers is increasingly activated as load is increased. When the small nozzle chamber has been fully activated and load on the turbine increases further, the large nozzle chamber is increasingly activated with load. At a predetermined degree of activation of the larger nozzle chamber, the small nozzle chamber is increasingly deactivated as the large nozzle chamber is increasingly activated. When the large nozzle chamber has been completely activated and the load on the turbine increases further, the small nozzle chamber is again increasingly activated as the load increases. The most efficient turbine operation obtains when the small nozzle chamber is deactivated simultaneously with activation initiation of the large nozzle chamber. Suitable relative disposition of the nozzle chambers allows avoidance of double shock operation of the turbine blades when the previously described method is practiced.
摘要翻译： 激活和停用弧形喷嘴室的顺序一起形成用于将蒸汽引入蒸汽涡轮并将其引导通过涡轮机叶片的结构。 至少一个小型和一个大喷嘴腔室协同地启动和停用，以提供最大的涡轮机效率。 在最小进入操作已经实现之后，随着负载增加，在激活的喷嘴室周围弧形设置的小喷嘴室越来越多地被激活。 当小喷嘴腔已经完全启动并且涡轮上的负载进一步增加时，大的喷嘴室被负载越来越多地激活。 在较大的喷嘴室的预定的激活程度下，随着喷嘴腔越来越多地激活，小喷嘴室就越来越失效。 当大喷嘴腔已被完全启动并且涡轮机上的负载进一步增加时，随着负载的增加，小喷嘴腔室再次被激活。 当小喷嘴室与大喷嘴室的激活启动同时停用时，获得最有效的涡轮机操作。 当实施前述方法时，喷嘴室的合适的相对布置允许避免涡轮机叶片的双重冲击操作。
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公开(公告)号：US4277944A
公开(公告)日：1981-07-14
申请号：US083436
申请日：1979-10-10
CPC分类号： F01K7/44
摘要： A method and apparatus for converting high pressure, high temperature elastic fuild (such as steam) to elastic fluid having a desired relatively low pressure and low temperature. Relatively high pressure, high temperature steam supplied from any point (preferably from a steam drum or equivalent location) in a steam cycle is initially throttled from a high temperature and pressure to a relatively intermediate temperature and pressure. Such intermediate temperature and pressure steam is routed through the tube side of a heat exchanger and subsequently throttled to a relatively low temperature and pressure. The resulting low temperature and pressure steam is then separated into its liquid and vapor phase components wherein the vapor phase is transmitted through the shell side of the heat exchanger and absorbs heat from the intermediate pressure, and temperature steam. The relatively low pressure, low temperature steam exiting the heat exchanger has the desired thermodynamic state. The temperature of the steam exiting the heat exchanger may be regulated by adjusting the high to intermediate pressure throttling device and the pressure of the low pressure steam exiting the heat exchanger may be regulated by adjusting the intermediate to low pressure throttling device. Such temperature and pressure regulation permits maintenance of steam temperature and pressure leaving the heat exchanger for varying temperatures and pressures of the relatively high pressure, high temperature steam supply. Such temperature and pressure maintenance enables elastic fluid utilizing devices to operate efficiently and reliably for fluctuating pressures and temperatures of the supply source.
摘要翻译： 一种用于将高压，高温弹性体（例如蒸汽）转化成具有期望的相对低的压力和低温的弹性流体的方法和装置。 从蒸汽循环中的任何点（优选来自蒸汽鼓或等效位置）供应的相对高压的高温蒸汽首先从高温和高压节流到相对中间的温度和压力。 这种中间温度和压力的蒸汽通过热交换器的管侧，然后被节流到相对较低的温度和压力。 然后将所得到的低温和高压蒸汽分离成其液相和气相组分，其中气相通过热交换器的壳侧传递并从中间压吸收热量，并且温度蒸汽。 离开热交换器的相对低压，低温蒸汽具有期望的热力学状态。 离开热交换器的蒸汽的温度可以通过调节高压到中压节流装置来调节，并且可以通过调节中间到低压节流装置来调节离开热交换器的低压蒸汽的压力。 这种温度和压力调节允许维持蒸汽温度和压力离开热交换器以改变相对高压，高温蒸汽供应的温度和压力。 这种温度和压力维持使得弹性流体利用装置能够有效和可靠地操作供应源的压力和温度。
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公开(公告)号：US4099385A
公开(公告)日：1978-07-11
申请号：US653174
申请日：1976-01-28
摘要： A nuclear steam turbine power plant system having an arrangement therein for extended fuel cycle operation. The power plant includes a turbine connected at its inlet to a source of motive fluid having a predetermined pressure associated therewith. The turbine has also connected thereto an extraction conduit which extracts steam from a predetermined location therein for use in an associated apparatus. A bypass conduit is provided between a point upstream of the inlet and the extraction conduit. A flow control device is provided within the bypass conduit and opens when the pressure of the motive steam supply drops beneath the predetermined pressure as a result of reactivity loss within the nuclear reactor. Opening of the bypass conduit provides flow to the associated apparatus and at the same time provides an increased flow orifice to maintain fluid flow rate at a predetermined level.
摘要翻译： 一种核蒸汽轮机发电厂系统，其具有用于延长燃料循环操作的装置。 发电厂包括在其入口处连接到具有与其相关联的预定压力的运动源的源的涡轮机。 涡轮机还连接有从其中的预定位置抽取蒸汽的抽吸管道，用于相关联的装置。 旁路管道设置在入口上游与提取管道之间。 当旁通导管内设置有流量控制装置，当动力蒸汽供给的压力由于核反应堆内的反应性损失而下降到预定压力以下时打开。 旁通管道的打开提供流向相关联的装置的流动，并且同时提供增加的流量孔口以将流体流速保持在预定水平。
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