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1. 发明专利

JPS62210202A HIGH SPEED VALVE CONTROLLER FOR TURBINE 失效
公开(公告)号：JPS62210202A
公开(公告)日：1987-09-16
申请号：JP5082986
申请日：1986-03-07
申请人： SHIKOKU ELEC POWER , MITSUBISHI HEAVY IND LTD , MITSUBISHI ATOMIC POWER IND , MITSUBISHI ELECTRIC CORP
发明人： SUGIMOTO HIROSHI , MATSUSHITA KUNIO , MAEDA TATSUKI , SASAKI TOSHIYUKI , HORI HIDENORI , IYO NORIYASU , ISHIGURO FUJIO
IPC分类号： F01K7/24
摘要： PURPOSE:To prevent the step out of a generator and improve its stability by deciding the type of fault occurring on a transmission line, then making the start of the high speed full-close control of conventional intercept valve and the runback of an intercept valve and a regulation valve according to the degree of the seriousness of fault and bringing the regulation valve to the full-open position after confirming the reclosing of the transmission line. CONSTITUTION:Upon occurrence of a fault on transmission lines 10a-10c or 11a-11c connected through the transmission end side buses 12a-12c to a generator 4, a protection relay functions to interrupt the transmission side and the receiving side circuitbreakers in the faulty line. Here, the seriousness of fault is decided by means of a valve opening control circuit 91 based upon an output from the protection relay (or a contact signal from a circuitbreaker) to determine to conventional high speed full-close control of an intercept valve, the runback control of a regulation valve 6, the runback control of an intercept valve 7, etc., and after the establishment of reclosing of the transmission line is confirmed, an open command is outputted to the regulation valve 6. Consequently, the step out of generator in the way of recovery of the turbine output can be prevented and the maximum stabilizing effect can be achieved at all times.

2. 发明专利

JPS6069216A SAFETY APPARATUS FOR STEAM TURBINE 失效
公开(公告)号：JPS6069216A
公开(公告)日：1985-04-19
申请号：JP16256683
申请日：1983-09-06
申请人： MITSUBISHI HEAVY IND LTD
发明人： KINO ETSUJI , HORI HIDENORI , HIRATA DAISAKU , SASAKI TOSHIYUKI
IPC分类号： F01D21/18
摘要： PURPOSE:To enhance reliability of operation of a safety apparatus for a steam turbine, by making multiplex use of servo valves, hydraulic valves and pressure detectors in an safety apparatus for a steam turbine which is designed to close a steam valve rapidly by lowering the hydraulic pressure rapidly when the steam turbine is tripped. CONSTITUTION:A safety apparatus for a steam turbine is composed of an amplifier circuit 200, a hydraulic trip circuit 300 and signal processing circuits 100, 110,... 1n0 to which test signals Tsp1a-TSpnc and signals S1a-Snc given from detectors for detecting various conditions of turbine operation are applied. The signal processing circuit 100 includes selection circuits 104-106 which are furnished with three signals S1a-S1c for detecting the same conditions (speed or other) of turbine operation and select the medium value of the above three signals. Further, the circuit 100 produces a logical signal (trip signal) by comparing the above medium value with a reference value E1s by comparators 107-109. When the trip signal is transmitted from the amplifier to hydraulic valves 312, etc. via servo valves 301, etc., the hydraulic valves 312, etc. are opened to close a steam valve rapidly.

3. 发明专利

JPS57156630A GENERATING AMOUNT CONTROL SYSTEM FOR COMBINED CYCLE PLANT 失效
公开(公告)号：JPS57156630A
公开(公告)日：1982-09-28
申请号：JP4065781
申请日：1981-03-20
申请人： MITSUBISHI HEAVY IND LTD
发明人： MURATA RIYOUICHI , FUJIWARA TOSHIKATSU , TAKADA SHIYUUHOU , SASAKI TOSHIYUKI
IPC分类号： H02J3/46

4. 发明专利

JPS59136503A Revolution speed control method for atomic energy turbine 失效
标题翻译：原子能涡轮机的变速控制方法
公开(公告)号：JPS59136503A
公开(公告)日：1984-08-06
申请号：JP997283
申请日：1983-01-26
申请人： Mitsubishi Heavy Ind Ltd
发明人： NAGANO OSAMU , SASAKI TOSHIYUKI , HORI HIDENORI
IPC分类号： F01D17/00 , F01D17/06
CPC分类号： F01D17/06
摘要： PURPOSE:To enable positive control for the frequency fluctuation of the titled system while keeping the fluctuating width of an allowable load for the primary system by a method wherein a govenor regulating rate determining decide the govenor characteristics with respect to the fluctuation of revolution speed is made to be a polygonal line characteristics which becomes infinity in a range larger than designated deviation. CONSTITUTION:A govenor control system in an atomic energy power plant is composed of a turbine revolution speed detector 1, a subtracter 2, a govenor regulating rate 9, a subtractor 4, a govenor characteristics 5, a valve characteristics 6, a turbine output power characteristics 7 and a load controller 8. A turbine output power fluctuation is made to be limited within the fluctuation width of an allowable load for the primary system by controlling a govenor valve due to the deviation of a turbine revolution speed. In this case, the govenor regulating rate 9 determining the govenor characteristics 5 for the fluctuation of the revolution is made to be a polygonal line characteristics which becomes infinity in a range larger than the designated deviation. The govenor valve is controlled until the revolution deviation reaches within the designated value, for instance, less than 0.06Hz, then the controlling is stopped when the deviation exceeds the designated value and prevents the absolute value of load fluctuation from exceeding, for instance, 2.5%.
摘要翻译：目的：为了使主系统的容许负载的波动宽度保持在标准系统的频率波动上，可以通过一种方法来实现对标准系统的频率波动的正向控制，其中，一个方法，其中一个控制速度确定决定了相对于转速的波动的出现特性成为在大于指定偏差的范围内变为无穷大的折线特征。构成：原子能发电厂的恶魔控制系统由涡轮转速检测器1，减法器2，调节阀9，减法器4，阀门特性5，阀门特性6，涡轮机输出功率特性7和负载控制器8.由于涡轮转速的偏差，涡轮机的输出功率波动被限制在主系统允许负载的波动幅度的控制之下。在这种情况下，确定旋转波动的复仇者特征5的卷风调节率9被设定为在大于指定偏差的范围内变为无限大的折线特性。控制旋转阀直到旋转偏差达到指定值以内，例如小于0.06Hz，则当偏差超过指定值时控制停止，并且防止负载波动的绝对值超过例如2.5 ％。

5. 发明专利

JPS5949305A Multiple hydraulic circuit for turbine preservation apparatus 失效
标题翻译：多用于涡轮机保存装置的液压回路
公开(公告)号：JPS5949305A
公开(公告)日：1984-03-21
申请号：JP15807582
申请日：1982-09-13
申请人： Mitsubishi Heavy Ind Ltd
发明人： KINO ETSUJI , SASAKI TOSHIYUKI
IPC分类号： F01D21/18 , F01D21/20
CPC分类号： F01D21/18
摘要： PURPOSE:To facilitate detection of trouble on a solenoid valve through test by performing multiplication (2 out of .) through simple combination of solenoid valves and to increase reliability by switching a hydraulic circuit to (2 out of 3) during test. CONSTITUTION:Four circuits are formed with a driving signal A for a solenoid valve 30, driving signal B for solenoid valves 31 and 32, driving signal C for solenoid valves 33 and 34, and a driving signal D for a solenoid valve 35. When a trip signal is generated with all the valves in normal state, solenoid valves 30-35 are switched by the driving signals A-D, and a steam valve is closed sharply to protect a turbine. If two circuits out of four circuits are stable, the turbine can be protected. The solenoid valve 30 is put into conduction and 40 and 41 are put into nonconduction with a signal A', and the solenoid valves 31 and 32 are put into conduction and 41, 42, and 43 are put into nonconduction with a signal B', and the solenoid valves 33 and 34 are put into conduction, and 43, 44, and 45 are put into nonconduction with a signal C', and the solenoid valve 35 is put into conduction and 45 is put into nonconduction with a signal D'. Therefore, a multiple hydraulic circuit is formed which is (2 out of 4) during operation and (2 out of 3) during test, and reliability is improved.
摘要翻译：目的：为了通过简单的电磁阀组合进行乘法（2次）的测试，便于检查电磁阀的故障，并通过在测试期间将液压回路切换到（2/3）来提高可靠性。构成：电磁阀30的驱动信号A，电磁阀31,32的驱动信号B，电磁阀33,34的驱动信号C，电磁阀35的驱动信号D构成4个回路。当a 在所有阀处于正常状态时产生跳闸信号，电磁阀30-35由驱动信号AD切换，并且蒸汽阀被急剧关闭以保护涡轮机。如果四个电路中的两个电路稳定，则可以保护涡轮机。电磁阀30进入导通状态，通过信号A'将40,41放入非导通状态，使电磁阀31,32进入导通状态，将41,42,43与信号B'进行非导通，使电磁阀33,34进入导通状态，并将43,44,45以信号C'进行非导通，使电磁阀35导通，将45置于非导通状态，信号D'。因此，在测试期间形成多个液压回路，其为在运行期间为（2分之4）和（2分之3）），并且可靠性得到改善。

6. 发明专利

JPS6380108A NPSH CONTROLLER FOR BOILER FEEDWATER PUMP 失效
公开(公告)号：JPS6380108A
公开(公告)日：1988-04-11
申请号：JP22513486
申请日：1986-09-24
申请人： MITSUBISHI HEAVY IND LTD
发明人： KUWABARA KOJI , SHOJI SHINYA , MANABE JUN , SASAKI TOSHIYUKI
IPC分类号： F22D5/34 , F22D1/28

7. 发明专利

JPS62210204A HIGH SPEED VALVE CONTROLLER FOR TURBINE 失效
公开(公告)号：JPS62210204A
公开(公告)日：1987-09-16
申请号：JP5083186
申请日：1986-03-07
申请人： SHIKOKU ELEC POWER , MITSUBISHI HEAVY IND LTD , MITSUBISHI ATOMIC POWER IND , MITSUBISHI ELECTRIC CORP
发明人： SUGIMOTO HIROSHI , MATSUSHITA KUNIO , MAEDA TATSUKI , SASAKI TOSHIYUKI , HORI HIDENORI , IYO NORIYASU , ISHIGURO FUJIO
IPC分类号： F01K7/24 , F01K13/02
摘要： PURPOSE:To prevent the step out of a generator and to suppress the fluctuation of the generator output by constructing such that a plurality of intercept valves are classified into plural groups so as to perform the open/close control of the intercept valves independently for every group. CONSTITUTION:Upon occurrence of a fault on a transmission line connected with a generator 4, said fault is detected and the high speed valve control circuits 8A, 8B for the first and second turbines function to provide the open/ close commands to the intercept valves 7A, 7B. Here, the starting times for closing and opening the intercept valves 7A, 7B and the opening speeds of said valves 7A, 7B are differentiated and the outputs from the low pressure first and second stage turbines 3A, 3B are regulated by utilizing the steam energy in the reheater 2. Consequently, the pressure rise of steam in the reheater 2 is suppressed to prevent the function of a safety valve, thereby the fluctuation of the output from the generator 4 is suppressed and the step out of generator in the way of recovery of the turbine output can be prevented.

8. 发明专利

JPS62210203A HIGH SPED VALVE CONTROLLER FOR TURBINE 失效
公开(公告)号：JPS62210203A
公开(公告)日：1987-09-16
申请号：JP5083086
申请日：1986-03-07
申请人： SHIKOKU ELEC POWER , MITSUBISHI HEAVY IND LTD , MITSUBISHI ATOMIC POWER IND , MITSUBISHI ELECTRIC CORP
发明人： SUGIMOTO HIROSHI , MATSUSHITA KUNIO , MAEDA TATSUKI , SASAKI TOSHIYUKI , HORI HIDENORI , IYO NORIYASU , ISHIGURO FUJIO
IPC分类号： F01K7/24
摘要： PURPOSE:To suppress the pressure rise of steam in a reheater, to prevent the step out of a generator and to suppress the fluctuation of the generator output by constructing such that a fault on a transmission line is detected and open/ close control signals are fed only to a part of plural intercept valves. CONSTITUTION:Upon occurrence of a fault on a transmission line, a high speed valve control circuit 81 for turbine functions to provide an open/close command to an intercept valve 7A (or 7B). Abrupt closure of the valve 7A (or 7B) causes abrupt decrease of the steam flow from a reheater 2 to a low pressure turbine 3A (or 3B) thereby the sum of the output from a high pressure turbine 1 and the outputs from the low pressure turbines 3A, 3B decreases abruptly as shown by a curve T, but the decreasing rate is sufficiently low corresponding to the amount which is not controlled conventionally. The pressure of steam in the reheater 2 does not rise abruptly because only one of the outlet conduits is closed by means of the valve 7A (or 7B). Here, the output from the generator 4 has a relatively low amplitude as shown by a curve G.

9. 发明专利

JPS5954708A Safety device for steam turbine 失效
标题翻译：蒸汽涡轮安全装置
公开(公告)号：JPS5954708A
公开(公告)日：1984-03-29
申请号：JP16309582
申请日：1982-09-21
申请人： Mitsubishi Heavy Ind Ltd
发明人： KINO ETSUJI , SASAKI TOSHIYUKI
IPC分类号： F01D21/18 , F01D21/20
CPC分类号： F01D21/20
摘要： PURPOSE:In a device for reducing the oil pressure abruptly upon turbine tripping to close a steam valve abruptly, to improve the reliability of operation by employing a servo valve and a hydraulic valve in the hydraulic trip circuit while providing a pressure transmitter to enable monitoring of the operation of the hydraulic valve. CONSTITUTION:When more than one of the trip signals TS1-TSn are transmitted, an analog signal is transmitted through a relay circuit 100 and a servo amplifier 110 to a hydraulic trip circuit 120 where the analog signal is converted into a hydraulic signal to close a steam valve abruptly. Upon production of trip signals, said circuit 120 will exchange the oil paths of the servo valves 121, 122 to transmit the feeding oil pressure Pso to check valves 125, 126 and oil pressure valves 127-130. Here the pressure Pso is blocked by the check valves 125, 126 to increase the load oil pressures Pd1, Pd2 thus to open said valves 127-130 then Pso is discharged to a hydraulic tank 9 thus to close the steam valve abruptly.
摘要翻译：目的：在一种用于在涡轮跳闸时急剧降低油压的装置，以突然关闭蒸汽阀，通过在液压跳闸回路中采用伺服阀和液压阀来提高操作的可靠性，同时提供压力变送器，以便监测液压阀的运行。构成：当多于一个跳闸信号TS1-TSn被发送时，模拟信号通过继电器电路100和伺服放大器110发送到液压跳闸电路120，在此液压跳闸电路120将模拟信号转换为液压信号以闭合蒸汽阀突然。在产生跳闸信号时，所述电路120将更换伺服阀121,122的油路以将供油压力Pso传递到止回阀125,126和油压阀127-130。这里，压力Pso被止回阀125,126阻塞以增加负载油压Pd1，Pd2，从而打开所述阀127-130，然后Pso被排出到液压缸9，从而突然关闭蒸汽阀。

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