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公开(公告)号：US20210010393A1
公开(公告)日：2021-01-14
申请号：US17041865
申请日：2019-03-01
发明人： Daisuke ESAKI , Katsuhiro AOKI , Yoji ENDO , Junya IDEGUCHI , Naoya KANAKUCHI , Takashi SHIRAIWA
摘要： This single-shaft combined cycle plant comprises: a power generator; a gas turbine; a steam turbine that is driven by using waste heat from the gas turbine, and is connected to the power generator by a clutch when the rotational speed syncs with the rotational speed of the gas turbine; a steam turbine over-rotation prevention device; a gas turbine over-rotation prevention device; and a control device. The control device sets the power generator to an unloaded state and, whilst maintaining the rotational speed Ng of the gas turbine so as to be higher than the rotational speed Ns of the steam turbine and lower than the maximum rotational speed Nglim of the gas turbine, increases the rotational speed Ns of the steam turbine to the maximum rotational speed Nslim of the steam turbine (time t2-t4) and tests whether or not the steam turbine over-rotation prevention device operates normally.
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2.发明授权Method of testing a system for protecting a turbomachine against overspeed while starting 有权在起动时测试涡轮机械防止超速的系统的方法公开(公告)号：US08925329B2
公开(公告)日：2015-01-06
申请号：US13377225
申请日：2010-06-02
CPC分类号： F01D21/003 , F01D21/02 , F01D21/20 , F05D2270/021
摘要： In a testing overspeed protection system: a) on receiving an order to start a turbomachine, an electronic regulation system (ERS) of the turbomachine sends an order to a control circuit of a fuel cutoff member to close the fuel cutoff member or to keep it in the closed position; b) the closed state of the FCM is verified on the basis of information transmitted to the ERS and representative of the position of the FCM; c) if the result of the verification in b) is positive, the ERS sends an order to the FCM control circuit to authorize opening of the FCM and enable the starting procedure to continue; and d) if the result of the verification in b) is negative, the ERS issues fault information concerning the overspeed protection system.
摘要翻译： 在测试超速保护系统中：a）在接收到启动涡轮机的命令时，涡轮机的电子调节系统（ERS）向燃料切断构件的控制电路发送命令以关闭燃料切断构件或保持 处于关闭状态; b）FCM的关闭状态是根据发送给ERS的信息进行验证的，并代表FCM的位置; c）如果b）中的验证结果为正，则ERS向FCM控制电路发送命令以授权开启FCM并使启动过程继续; 和d）如果b）中的验证结果为否定，则ERS会发出有关超速保护系统的故障信息。
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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：US4087860A
公开(公告)日：1978-05-02
申请号：US814055
申请日：1977-07-08
申请人： John M. Beatty , Robert L. Frater
发明人： John M. Beatty , Robert L. Frater
摘要： A boiler feedpump turbine (BFPT) control system for controlling the rotating speed of a boiler feedpump turbine in a selected one of at least three control modes is disclosed. The boiler feedpump turbine is mechanically coupled to a boiler feedpump for governing the flow of feedwater pumped by the feedpump to a boiler. A boiler control turbine speed signal which represents the feedwater requirement of the boiler is provided to the BPFT control system from a conventional boiler feedwater control system. The flow of feedwater pumped by the feedpump is a function of the rotating speed of the boiler feedpump turbine which is controlled in a selected one of three modes in accordance with the adjustment of a speed set point. The three control modes include adjusting the speed set point in relation to a turbine speed demand signal generated within the BFPT control system only at values below the boiler control turbine speed signal, adjusting the speed set point in relation to the boiler control turbine speed signal, and overriding the adjustment of the speed set point by the boiler control turbine speed signal to permit adjustment of the speed set point by the turbine speed demand signal beyond the value of the boiler control turbine speed signal. Transfers between the control modes are performed automatically in response to a set of predetermined conditions and commands. The BFPT additionally provides for conducting an overspeed test which permits adjustment of the speed set point by the turbine speed demand signal in a predetermined range beyond a rated turbine speed value. This overspeed test function prohibits the speed set point from remaining above the rated turbine speed values at times when not conducting the overspeed test. The BFPT control system employs a closed-loop primary speed controller which calculates its turbine speed feedback signal from a selected one of two speed transducers. The other of the two speed transducers may be used if a malfunction is detected in the selected speed transducer. The BFPT control system further incorporates a degraded manual backup controller which assumes control responsibilities when a malfunction is detected which renders the primary controller inoperative.
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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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6.发明授权
公开(公告)号：US3931714A
公开(公告)日：1976-01-13
申请号：US477114
申请日：1974-06-06
申请人： Karl O. Jaegtnes , Millard F. Smith
发明人： Karl O. Jaegtnes , Millard F. Smith
摘要： An electrohydraulic emergency trip system which automatically shuts off the steam supply to a turbine power plant upon the detection of specific operational contingencies is disclosed. The hydraulic portion of the system includes two pair of combined electrical and hydraulically operated pilot trip valves that are so arranged that the opening of any one valve of each pair decreases the hydraulic trip pressure to close rapidly the steam inlet valves to the turbine; that an open or closed failure of a single trip valve does not prevent a valid trip or cause an unwarranted trip; and finally that an open failure of one pair of the valves does not result in an unwarranted trip. Each pair of valves is electrically operated from an independent voltage source such that the electrical failure of one source does not cause or prevent an unwarranted turbine trip. The pilot portion of the hydraulic system is so arranged that the electrical operation of either pilot valve portion of each pair operates hydraulically the other pilot portion of that pair.The hydraulic portion of the system is also constructed to be responsive to the operation of the conventional mechanical overspeed mechanism. In one embodiment such mechanism operates from the same fluid pressure source to operate the two pair of valves hydraulically. In another embodiment, a second fluid source is used to operate the conventional diaphragm overspeed trip valves of the overspeed mechanism and in turn the diaphragm valve hydraulically operates the two pair of trip valves. In a modification of this embodiment, the diaphragm valves decreases the trip pressure to close the steam inlet valves without the necessity of operating the trip valves.
摘要翻译： 公开了一种电液式紧急跳闸系统，其在检测到特定操作意外事件时，自动关闭涡轮发电厂的蒸汽供应。 系统的液压部分包括两对组合的电气和液压操作的先导脱扣阀，其布置成使得每对的任何一个阀的开口降低液压跳闸压力，以将蒸汽入口阀快速关闭到涡轮机; 单次脱扣阀的打开或关闭故障不能阻止有效的行程或造成无理的行程; 最后一对阀门的开路故障不会导致无理的行程。 每对阀门都由独立的电压源电动操作，使得一个电源的电气故障不会导致或防止无理的涡轮机跳闸。 液压系统的引导部分被布置成使得每对的先导阀部分的电气操作液压地操作该对的另一个引导部分。
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公开(公告)号：US3682564A
公开(公告)日：1972-08-08
申请号：US3682564D
申请日：1971-04-26
申请人： LAVAL TURBINE
发明人： FEENEY RICHARD L
CPC分类号： F01D21/20
摘要： Each stop valve in a steam turbine power plant is controlled by a piston and cylinder unit. A control system is provided which allows full movement of the stop valve under actual overspeed conditions, and which produces a simulated overspeed condition effecting only a partial closing movement of the stop valve for test purposes.
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公开(公告)号：US1401239A
公开(公告)日：1921-12-27
申请号：US34361519
申请日：1919-12-09
申请人： DAVID COCKBURN , DONALD MACNICOLL
发明人： DAVID COCKBURN , DONALD MACNICOLL
IPC分类号： F01D21/20
CPC分类号： F01D21/20 , Y10T137/27
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公开(公告)号：US10690002B2
公开(公告)日：2020-06-23
申请号：US16037965
申请日：2018-07-17
申请人： Thomas Revak
发明人： Thomas Revak
摘要： A turbine overspeed trip test data system is a portable system by which an operator can electronically gather and log data during a turbine overspeed test. A plurality of sensors can be affixed to various components of the turbine for gathering test data to be received by a processing unit to assess the operation of the turbine overspeed trip protection components. The test data may be compiled into a turbine test log. A method for processing the gathered sensor data is also provided.
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