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1. 发明专利

JPS59180006A Gas turbine stator blade segment 失效
标题翻译：气体涡轮机定子叶片分段
公开(公告)号：JPS59180006A
公开(公告)日：1984-10-12
申请号：JP5263583
申请日：1983-03-30
申请人： Hitachi Ltd
发明人： MATSUDA KENSHIYOU
IPC分类号： F01D9/02 , F01D9/04
CPC分类号： F01D9/044
摘要： PURPOSE:To lower thermal stress that may be induced in each of segments, by making the part between a blade and a side wall of a gas turbine stator blade to have a loose fit structure, the gas turbine stator blade being an assembly of segments each comprising the blade and side walls. CONSTITUTION:In a stator blade segment provided with one or more blades 1 between outer and inner side walls, to assemble the blade 1, fixing jigs 13, 14 are used. In the assembling, the blade 1 provided with the fixing jigs 13, 14 at the opposite ends is inserted from above of the outer side wall 2 and the fixing jig 14 is fixed by the inner side wall 3 and a welded section 15. The fixing jig 13 has steps and includes a structure that can engage with the outer side wall 2, and the wall 2 and the jig 13 are not fixed. To prevent cooling air from leaking between the outer side wall 2 and the fixing jig 13, if required, a sealing plate 16 is attached over the boundary between them and is fixed by a welded section 17.
摘要翻译：目的：为了降低每个段中可能引起的热应力，通过使燃气涡轮机定子叶片的叶片和侧壁之间的部分具有松散的配合结构，燃气涡轮机定子叶片是每个段的组件包括叶片和侧壁。构成：在外壁和内侧壁之间设置有一个或多个叶片1的定子叶片段中，为了组装叶片1，使用固定夹具13,14。在组装中，在相对端设置有固定夹具13,14的刀片1从外侧壁2的上方插入，并且固定夹具14由内侧壁3和焊接部15固定。固定夹具13具有台阶并且包括可与外侧壁2接合的结构，并且壁2和夹具13不固定。为了防止冷却空气在外侧壁2和固定夹具13之间泄漏，如果需要，密封板16安装在它们之间的边界上，并通过焊接部分17固定。

2. 发明专利

JPS54157708A HEAT TREATMENT FOR INCREASING STRENGTH OF PIPE 失效
公开(公告)号：JPS54157708A
公开(公告)日：1979-12-12
申请号：JP6574178
申请日：1978-06-02
申请人： HITACHI LTD
发明人： SATOU YOSHIMI , SHIMIZU TASUKU , ENOMOTO KUNIO , MATSUDA KENSHIYOU
IPC分类号： C21D9/08 , F16L9/02
摘要： PURPOSE:To prevent stress-corrosion cracking by the procedure in which an object to be heated is kept beforehand inside a pipe and then heated to a high temperature so as to produce a temperature difference between the outside and inside surfaces of the pipe, whereby causing a tensile yield to take place in the inside and also a comrpressive yield to take place in the outside. CONSTITUTION:The fluid 7 heated is put in the inside of the pipe 2, and then the outside surface of the pipe 2 is heated to higher temperature by means of the heating coil 3 so as to produce a temperature difference between the outside and inside surfaces, whereby causing a tensile yield to take place in the inside and also a compressive yield to take place in the outside. Thus, it is possible to increase the strength and also to prevent the occurrence of stress-corrosion cracking in the pipe.

3. 发明专利

JPS5357554A HEAT EXCHANGER 失效
公开(公告)号：JPS5357554A
公开(公告)日：1978-05-24
申请号：JP13176676
申请日：1976-11-04
申请人： HITACHI LTD
发明人： MATSUDA KENSHIYOU , SHIMIZU TASUKU , SATOU YOSHIMI , YOKOTA HIRAKAZU , SUMIKAWA MASAHARU
IPC分类号： G21D1/00 , F28D7/00 , F28D7/16 , F28F9/02 , G21C15/00
摘要： PURPOSE:To provide a tube type heat exchanger, in which a support member supporting a descent tube penetrating it is provided at its portion in contact with the tube with radial notches so that the afore-said portion is free from plastic deformation.

4. 发明专利

JPS58197404A Nozzle blade for gas turbine 失效
标题翻译：气体涡轮喷嘴叶片
公开(公告)号：JPS58197404A
公开(公告)日：1983-11-17
申请号：JP7985582
申请日：1982-05-14
申请人： Hitachi Ltd
发明人： UMEZAWA SADAO , MATSUDA KENSHIYOU , NAKAMURA MASAYUKI , TERUNUMA FUKUJIYU
IPC分类号： F01D9/02 , F01D5/18
CPC分类号： F01D5/187
摘要： PURPOSE:To make a temperature gradient gentle in a nozzle blade, by forming flange parts separately from projecting parts defining a flow passage for combustion gas so that the projecting parts is made thin. CONSTITUTION:Thin flange-like projecting parts 12, 13 are integrally formed with a nozzle blade 1 which is integrally incorporated with blade extensions 14, 15, respectively on the inside and outside thereof, and which is attached to a casing 4 and a diaphragm 6 by means of flanges 2, 3. A part of cooling air (b) is also led to the blade extensions 14, 15. As above-mentioned, since the projecting parts 12, 13 are formed separately from the flanges 2, 3, the extensions 12, 13 may be made thin.
摘要翻译：目的：通过与形成燃烧气体的流路的突出部分分开形成凸缘部分，使突出部分变薄，使喷嘴刀片中的温度梯度温和。构成：薄凸缘状突出部12,13与分别在其内侧和外侧与刀片延伸部14,15一体地结合的喷嘴刀片1一体地形成，并且附接到壳体4和隔膜6 冷却空气（b）的一部分也被引导到叶片延伸部14,15。如上所述，由于突出部分12,13与凸缘2,3分开形成，延伸部12,13可以变薄。

5. 发明专利

JPS57157002A CLEARANCE CONTROLLING DEVICE FOR GAS TURBINE 失效
公开(公告)号：JPS57157002A
公开(公告)日：1982-09-28
申请号：JP4236681
申请日：1981-03-25
申请人： HITACHI LTD
发明人： UMEZAWA SADAO , MATSUDA KENSHIYOU , NAKAMURA MASAYUKI , TERUNUMA FUKUJIYU
IPC分类号： F01D11/08 , F01D11/10 , F01D11/24
摘要： PURPOSE:To increase the working efficiency of a gas turbine, by inserting a thin-walled, toroidal sealing ring between the casing of a gas turbine and rotor blades, and by providing a valve device to control the flow rate of cooling air at the external periphery of a sealing ring. CONSTITUTION:A thin-walled, toroidal seaing ring 6, which is made to one body with a whole periphery, is inserted into the channel, provided to the surface of an internal periphery of a wing-ring 2, while a hole 15 is opened and closed by a valve 7. A sealing ring 6 is expanded by heat to the radius direction, when a gas turbine is started, so that the ring does not touch with a labyrinth 5, if the tip of a rotor blade is stretched out. When a gas turbine comes to a steady operation, a cooling air is introduced into a valve chamber 14, a valve rod 8 is pulled up, a valve 7 is opened, so that the cooling air can flow into the surface of an external periphery of a sealing ring 6. Therefore, the sealing ring 6 is contracted, and the clearance betweeh the tip of a rotor blade and a labyrinth 5 becomes narrow. In this manner, the clearance at the tip of a rotor blade can be controlled in good condition, even if it is in a casing of a thick-walled, and water- surface-divided structure.

6. 发明专利

JPS56117142A MEASUREMENT OF DISTORTION 失效
公开(公告)号：JPS56117142A
公开(公告)日：1981-09-14
申请号：JP1917180
申请日：1980-02-20
申请人： HITACHI LTD
发明人： MATSUDA KENSHIYOU , SHIMIZU TASUKU
IPC分类号： G01N3/00 , G01N3/06 , G01N3/08
摘要： PURPOSE:To measure the distortional distribution of a construction which is to be used at a high temperature by adhering many elements made of thin wires of a heat proof metallic to the construction and observing the change of resistance caused by the temperature and distortion of these elements. CONSTITUTION:Melted heat-proof insulator 2 is applied on the upper surfae of construction 1, many elements 3a-3d made of minute wires of heat-proof metallic material are arrayed on the insulator 2 and then melted heat-proof insultor 2 is applied again over the elements 3 to fix them. In addition, the elements 3 are adhered to a small testing chip and the change of resistance cuased by the change of temperature and repeated distortion should be observed to grasp the temperature distribution, distortional distribution and the number of repeated times of distortion from element 3 adhered to construction 1. Thus, the distribution of temperature and distortion of construction 1 can be measured quantitatively and the damage of construction 1 can be prevented by measuring the distortion.

7. 发明专利

JPS5383149A DOWNWARD TUBE SUPPORTING STRUCTURE OF TUBING TYPE HEAT EXCHANGER 失效
公开(公告)号：JPS5383149A
公开(公告)日：1978-07-22
申请号：JP15974376
申请日：1976-12-28
申请人： HITACHI LTD
发明人： MATSUDA KENSHIYOU , ITOU YOSHIYASU , SHIMIZU TASUKU , SUMIKAWA MASAHARU
IPC分类号： F28F9/013 , F28D7/00 , F28F9/00
摘要： PURPOSE:To aim at reducing the stress to tube plate as well as supporting a down ward tube stably by mounting the downward tube supporter at the inner drum except the tub plate joint part with separate constitution from the tube plate.

8. 发明专利

JPS52101711A PIPE SUPPORTING LUG FITTING STRUCTURE 失效
公开(公告)号：JPS52101711A
公开(公告)日：1977-08-26
申请号：JP1792076
申请日：1976-02-23
申请人： HITACHI LTD
发明人： MATSUDA KENSHIYOU , ITOU YOSHIYASU , TATE YASUO
IPC分类号： F16L3/00 , F16L3/14 , G21D1/00 , G21D1/02
摘要： PURPOSE:To allow the behavior corresponding to the contraction and elongation of pipe to generate on the reinforcing ring and to prevent the generation of crack on the pipe by forming a part having a low stiffness on the unwelded part of the reinforcing ring.

9. 发明专利

JPS58202301A Cooling device of steam turbine rotor 失效
标题翻译：蒸汽涡轮转子冷却装置
公开(公告)号：JPS58202301A
公开(公告)日：1983-11-25
申请号：JP8313582
申请日：1982-05-19
申请人： Hitachi Ltd
发明人： UMEZAWA SADAO , MIYATA HIROSHI , MATSUDA KENSHIYOU
IPC分类号： F01D5/18 , F01D5/08 , F01D9/02
CPC分类号： F01D5/08
摘要： PURPOSE:To reduce stress of a rotor, by providing an axial flow compressor device to a space formed between the rotor and the internal surface of a nozzle box and flowing cooling steam, which flows in through a hole extended through a stationary blade, into the upstream of the rotor through pumping action of said axial flow compressor device. CONSTITUTION:A space S formed between a rotor 7 and the internal surface of a nozzle box 1 is communicated to a passage 22 extended through a stationary blade 2, and a screw seal 8 is provided to a surface of the rotor 7. Rotation of the rotor 7 causes pumping action of the screw seal 8, and cooling steam flowing in via the passage 22 is penetratively circulated to the upstream of the rotor 7. In this way, since the rotor 7 can be cooled without causing the necessity for forming an annular train of holes in a disc part of the rotor 7, the generation of concentrated stress due to the hole can be prevented.
摘要翻译：目的：为了减少转子的应力，通过在转子与喷嘴箱的内表面之间形成的空间和流过通过固定叶片延伸的孔流动的冷却蒸汽提供轴流式压缩机装置，通过所述轴流式压缩机装置的泵送作用在转子的上游。构成：在转子7和喷嘴箱1的内表面之间形成的空间S与延伸穿过固定叶片2的通道22连通，螺旋密封件8设置在转子7的表面。转子7引起螺杆密封件8的泵送作用，并且经由通道22流入的冷却蒸汽被穿透地循环到转子7的上游。这样，由于转子7可以被冷却而不需要形成环形在转子7的圆盘部分中的孔列，可以防止因孔产生集中的应力。

10. 发明专利

JPS58148202A NOZZLE SEGMENT OF GAS TURBINE 失效
公开(公告)号：JPS58148202A
公开(公告)日：1983-09-03
申请号：JP2882082
申请日：1982-02-26
申请人： HITACHI LTD
发明人： MATSUDA KENSHIYOU , MIYATA HIROSHI , UMEZAWA SADAO , TERUNUMA FUKUJIYU , NAKAMURA MASAYUKI
IPC分类号： F01D9/02 , F01D5/14
摘要： PURPOSE:To prevent the generation of fatigue and crack, by dividing a flange and nozzle blade in an internal peripheral side into leading and trailing edge sides to reduce thermal stress. CONSTITUTION:A nozzle blade 1 is divided into a leading edge part 11 and trailing edge part 12 with a part, in which a cooling groove 7 is provided, as a border. The parts 11, 12 are jointed in the peripheral side of the nozzle blade and fixed to a casing 3 by a flange 2. While in the internal peripheral side of the nozzle blade, also the flange is divided into a leading edge side flange 8 and trailing edge side flange 9, and an inner casing 10 is suspended by the flange 8. The flange 9 is not restricted in the radial direction. In this way, a gradient of temperature in each divided part can be decreased.

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