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1. 发明专利

JPH03267505A TURBINE MOVING BLADE WITH EROSION SHIELD 失效
公开(公告)号：JPH03267505A
公开(公告)日：1991-11-28
申请号：JP6710290
申请日：1990-03-19
申请人： HITACHI LTD
发明人： ISHII MASAHARU , ABE MASAHARU , HARAGUCHI MOTONARI
IPC分类号： F01D5/14 , F01D5/28
摘要： PURPOSE:To reduce the cost for material and machining and part mounting time by mounting the erosion shields, which are overhanged to the side of stationary blades only on the head blades of a moving blade group comprising a blade lattice of turbine moving blade divided. CONSTITUTION:A blade lattice of a turbine moving blade is divided into several groups, and erosion shields 4, which are overhanged to the side of stationary blades 1a to 1c, are mounted only to the head blades 2a and 3a of each group. In addition, measures are taken for preventing other blades 2b to 2d and 3b to 3d in the group from water crashing caused by the erosion shield 4. Since the erosion shield 4 is mounted only to the head blades 2a and 3a, costs for material and machining and part mounting time can substantially be reduced.

2. 发明专利

JPH02153205A OPERATION OF STEAM FLOW CONTROL VALVE OF STEAM TURBINE AND ITS DEVICE 失效
公开(公告)号：JPH02153205A
公开(公告)日：1990-06-12
申请号：JP30401688
申请日：1988-12-02
申请人： HITACHI LTD
发明人： ABE MASAHARU , HARAGUCHI MOTONARI , KUWAJIMA HIDESUMI
IPC分类号： F01D17/10 , F01D21/00
摘要： PURPOSE:To permit the test of a steam flow control valve in an operating state with easy handling by controlling the steam flow control valve with the opening varied within the range equivalent to saturation flow rate of the curve of the opening of the steam flow control valve to steam flow rate. CONSTITUTION:The phenomenon that a steam flow control valve (V) is agglutinated to disable open-and-close operation occurs mainly in between a valve rod 10 and a valve rod guide 14 exposed to high-temperature steam. To dissolve such an agglutinated condition, configuration is so made that the valve rod 10 can be stroked without varying a steam flow passing through the valve (V) when test operation is performed to stroke the valve rod 10 during load run. That is, a cam shaft 5 rotated by the action of a cylinder 1 via a rack 6 and a pinion 3 is mounted with a cam 7, and via a lever 11 associated with this cam 7 the valve rod 10 is elevated up and down. The cam 7 is formed in the shape of varying the opening of the valve within the range equivalent to saturation flow rate of the curve of the opening of the steam flow control valve (V) to steam flow rate.

3. 发明专利

JPS61237802A WARMING-UP METHOD FOR STEAM TURBINE 失效
公开(公告)号：JPS61237802A
公开(公告)日：1986-10-23
申请号：JP7647585
申请日：1985-04-12
申请人： HITACHI LTD
发明人： ABE MASAHARU
IPC分类号： F01D25/10 , F01K7/24
摘要： PURPOSE:To decrease thermal stress of a rotor, by warming up the front stages group of a high pressure turbine and keeping the rear stages group of this high pressure turbine to be vacuum, during the start of an intermediate pressure turbine, in the starting method for a reheat turbine, which is constituted as starting the high pressure turbine after starting the intermediate pressure turbine. CONSTITUTION:At the start of a turbine, steam is fed from a steam pipe 28 into the steam chamber 29 of an intermediate pressure turbine 50, and most of this steam is led out to a low pressure turbine through a connecting pipe 51, as being expanded in the stages of the intermediate pressure turbine. On the other hand, a part of the steam is led into a steam chamber 41 through such as a space between the stationary blade 210 at the first stage of the intermediate pressure turbine and a packing case 40, and sent to a warming up steam valve 75 through routes 101-104. Then, this steam is led to the first stage 10a of a high pressure turbine 10 through routes 74-70, so as to perform warming up by this steam, and after that, this steam is exhausted to a condensate route through a ventilator valve 85 and a steam pipe 87. At this time, the inside of the high pressure turbine 10 is kept vacuum, and flowing of the outside air into this turbine 10 is prevented by labyrinth packings 303a-303c.

4. 发明专利

JPS5428912A TESTER FOR BLOWWDOWN VALVES OF STEAM TURBINE 失效
公开(公告)号：JPS5428912A
公开(公告)日：1979-03-03
申请号：JP9418977
申请日：1977-08-08
申请人： HITACHI LTD
发明人： ABE MASAHARU
IPC分类号： F01K9/04 , F01D21/00
摘要： PURPOSE:To confirm that a turbine is performing normal on-load running, by causing one valve to remain closed when the other valve is being tested.

5. 发明专利

JPS62267504A STEAM FLOW CONTROL VALVE 失效
公开(公告)号：JPS62267504A
公开(公告)日：1987-11-20
申请号：JP10850686
申请日：1986-05-14
申请人： HITACHI LTD
发明人： MUROBOSHI TAKANORI , MISHIRO ISAO , ABE MASAHARU
IPC分类号： F01D25/00 , F01D17/10
摘要： PURPOSE:To reduce erosion of a valve by setting the tangential direction of a valve throat part in a control valve which has a valve spindle in the downstream side of a valve at a specific angle or less with respect to the axis of said valve spindle. CONSTITUTION:A valve seat part P and a valve throat part Q which has an annular area smaller than said valve seat part are formed between the valve seat 13 of a main stop valve and a full arc injection starting valve 14. And the tangential direction of the valve throat part Q is set at 10 deg. or less with respect to a valve spindle 7 in the downstream side of said valve 14. Accordingly, steam velocity at the valve seat part P is less than that of the valve throat part Q an erosion of said valve seat part can be reduced, together with reduction of erosion of the valve spindle 7.

6. 发明专利

JPS61126303A Steam turbine shaft seal system 失效
标题翻译：蒸汽轮轴密封系统
公开(公告)号：JPS61126303A
公开(公告)日：1986-06-13
申请号：JP24794884
申请日：1984-11-26
申请人： Hitachi Ltd
发明人： ABE MASAHARU
IPC分类号： F01D11/04 , F16J15/16
CPC分类号： F16J15/162 , F01D11/04
摘要： PURPOSE:To aim at enhancing the thermal efficiency of a steam turbine, by disposing a high temperature side pipe line in a low temperature side pipe line communicated with a seal steam chamber for heat-exchange therebetween. CONSTITUTION:A high temperature side pipe line 35' is fitted into a through-hole 30 which is formed in a packing case 51 for partitioning between seal steam chambers 50a, 50b. A low temperature side pipe line 43' is fitted in a hole 70 communicated with the seal steam chamber 50b. The diameter of the low temperature side pipe line 43' is larger than that of the high temperature side pipe line 35' which is therefore disposed in the former. With this arrangement heat which is recovered by the shaft seal device may have a higher temperature, thereby it is possible to enhance the thermal efficiency of the turbine.
摘要翻译：目的：为了提高蒸汽轮机的热效率，通过在与密封蒸汽室连通的低温侧管道中设置高温侧管线，以在其间进行热交换。构成：高温侧管路35'装配在通孔30中，通孔30形成在密封蒸汽室50a，50b中分隔的包装箱51内。低温侧管路43'装配在与密封蒸汽室50b连通的孔70中。低温侧管路43'的直径大于设置在前者的高温侧管路35'的直径。通过这种布置，由轴封装置回收的热量可以具有较高的温度，从而可以提高涡轮机的热效率。

7. 发明专利

JPS60150402A SPEED GOVERNING SYSTEM SWITCHING TYPE FLOW CONTROL DEVICE 失效
公开(公告)号：JPS60150402A
公开(公告)日：1985-08-08
申请号：JP630684
申请日：1984-01-19
申请人： HITACHI LTD
发明人： ABE MASAHARU
IPC分类号： F01D17/22 , F01D17/20
摘要： PURPOSE:To make it possible to perform interchange optionally between a throttling speed governing system and a nozzle cut-out speed governing system, by constructing the flow control valve of a turbine, with mechanical cams which have two kinds of flow peculiarities, two hydraulic pilot valves and one driving unit. CONSTITUTION:The speed governing device of a steam turbine is constructed with mechanical cams 12a-12h which have two kinds of flow peculiarities, two hydraulic pilot valves 15g, 15h and one common driving unit 36. The hydraulic pilot valves 15g, 15h are arranged in series, and it is performed that a throttling speed governing system and a nozzle cut-out speed governing system are interchanged to each other, by stopping the operation of the combined cam/pilot valve, which have one kind of flow peculiarity, (such as the cam 12h and the pilot valve 15h) when the other combined cam/pilot valve, which have the other kind of flow peculiarity, (the cam 12g and the valve 15g) are operated.

8. 发明专利

JPS5943906A Protective trip device for rotary machine 失效
标题翻译：旋转机保护跳闸装置
公开(公告)号：JPS5943906A
公开(公告)日：1984-03-12
申请号：JP15260182
申请日：1982-09-03
申请人： Hitachi Ltd
发明人： ABE MASAHARU , OOTAHARA YASUHIKO
IPC分类号： F01D15/08 , F01D21/14 , F01D21/16
CPC分类号： F01D21/14
摘要： PURPOSE:To have automatic stop of a rotary machine at the time of shaft breakage by furnishing pressure switches with different set values in a discharge system of a main oil pump mounted on the shaft of the rotary machine and by actuating the emergency stop device of the same when the discharge pressure sinks below the set pressure values of both switches. CONSTITUTION:Two pressure switches 1, 2 are installed at the discharge oil pipe 9 of a main oil pump 10 driven by the main 17 of a turbine 19. These switches are so set that one 1 will be off with the oil pressure below P1 while the other 2 off with the oil pressure exceeding P3, where P3 is higher than P1, and when both switches are off, a relay 20 is actuated to put an emergency shutoff valve 21 in service in order to close a stop valve 22. Off conditions of the two switches are normally not overlapped, but an abrupt drop of the oil pressure because of breakage will not permit the sensing pressure of the switch to sink so quickly through the action of an orifice 8 and oil chamber 7, so that both switches are turned off and a relay 21 is actuated to cause emergency stop of the turbine.
摘要翻译：目的：通过在安装在旋转机器的轴上的主油泵的排放系统中提供具有不同设定值的压力开关，在轴断开时自动停止旋转机器，并且通过致动紧急停止装置当排出压力低于两个开关的设定压力值时相同。构成：两个压力开关1,2安装在由涡轮机19的主体17驱动的主油泵10的排放油管9处。这些开关被设定为使得一个1在油压低于P1的同时关闭，同时另一个2关闭，油压超过P3，其中P3高于P1，当两个开关都关闭时，继电器20被启动，使紧急截止阀21处于使用状态，以关闭截止阀22.关闭条件两个开关通常不重叠，但由于断裂引起的油压的突然下降将不允许开关的感测压力通过孔8和油室7的作用而如此迅速地下沉，使得两个开关关闭并且继电器21被致动以引起涡轮的紧急停止。

9. 发明专利

JPS5632011A EMERGENCY SHUTTOFF VALVE FOR STEAM TURBINE 失效
公开(公告)号：JPS5632011A
公开(公告)日：1981-04-01
申请号：JP10722479
申请日：1979-08-24
申请人： HITACHI LTD
发明人： ABE MASAHARU
IPC分类号： F01D17/10 , F01D21/00 , F01D21/16 , F01D25/00
摘要： PURPOSE:To preclude the inflow of scales into a steam turbine by a method wherein a scale collector, a chamber and a scale discharging piping are provided at a steam inlet portion of a cylinder for a steam strainer which separates bulky scales. CONSTITUTION:A strainer 10, separating bulky scales mixed in steam fluid, has holes 10a for passing the steam and is held in a cylinder 11. A scale collector 14 and a chamber 17 are provided at a steam inlet portion 4 and the bulky scales collected in the chamber 17 can be discharged to the outside of a valve by connecting a scale discharging piping 19. The steam, scales therein are separated therefrom, passes through the holes 10a, 11a for passing the steam and a throat portion 27, consisting of a valve seat 16 and a sleeve 6, and arrives at a steam chamber 15 and a steam outlet portion 5. Thereby, inflow of the scales can be precluded.

10. 发明专利

JPS562413A TESTING EQUIPMENT FOR LOW PRESSURE TURBINE BYPASS VALVE 失效
公开(公告)号：JPS562413A
公开(公告)日：1981-01-12
申请号：JP7685479
申请日：1979-06-20
申请人： HITACHI LTD
发明人： ABE MASAHARU , OKUNISHI FUJIO
IPC分类号： F01K9/04
摘要： PURPOSE:To test cut-off and control valves disposed in a low-pressure turbine bypass line without generating heat loss during a normal opertion by installing a control circuit which prevents simultaneous opening of both valves. CONSTITUTION:In a valve test, a switch 49 is turned on to energized relays 50, 51. the relay 51 actuates a servo-valve 40 to have an operation cylinder 39 fully open a valve body 46 of a control valve 7. Detecting the fully opened valve body 46, a limit switch 42 deactuates a relay 52 and releases the self-holding state of a relay 51 so that the servo-valve 40 operates to fully close the valve body 46. On the other hand, when said switch 42 is on it energizes a relay 54 to operate a relay 55 for testing a following cut-off valve. When the control valve 7 is closed to open the limit switch 43, the relay 53 is deenergized. With a relay 55 is on, a cut-off valve 6 may be tested.

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