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1. 发明专利

JPH0979937A HEAT-RESISTANT AND PRESSURE-RESISTANT STRUCTURE, ITS MANUFACTURE, FREE-PISTON TYPE SHOCK WIND TUNNEL DEVICE, AND MANUFACTURE OF SHOCK TUBE OF THIS WIND TUNNEL DEVICE 失效
公开(公告)号：JPH0979937A
公开(公告)日：1997-03-28
申请号：JP23163095
申请日：1995-09-08
申请人： HITACHI LTD , HITACHI NUCLEAR ENG
发明人： YAMAGUCHI SHIZUKA , KOJIMA YOSHIYUKI , TAKAKUSAKI TSUNEHIKO , YOSHINO TOMOYA , ITAMI HIROYUKI , NAKANO SUSUMU , MATSUDA KENSHO
IPC分类号： G01M9/02
摘要： PROBLEM TO BE SOLVED: To provide a free-piston type shock wind tunnel device using shock tube parts composed of a metallic material having a high melting point, high toughness, and a high strength, a method for manufacturing the tunnel device, and a shock tube. SOLUTION: In a free-piston type wind tunnel device, a cylindrical shock tube 26 which is exposed to a high-speed air flow and receives a thermal stress is made of a metallic material having a high melting point, high toughness, and a high strength and the internal surface of the tube 26 is coated with a heat protective Ni or Ni-alloy liner 261.

2. 发明专利

JPH093647A THERMAL STRESS RELAXATION TYPE COATED HEAT RESISTANT STRUCTURE PART AND ITS PRODUCTION 失效
公开(公告)号：JPH093647A
公开(公告)日：1997-01-07
申请号：JP15131095
申请日：1995-06-19
申请人： HITACHI LTD , HITACHI NUCLEAR ENG
发明人： YAMAGUCHI SHIZUKA , KOJIMA YOSHIYUKI , BABA NOBORU , TAKAKUSAKI TSUNEHIKO , ITAMI HIROYUKI , NAKANO SUSUMU , MATSUDA KENSHO
IPC分类号： G01M9/04 , C23C16/06
摘要： PURPOSE: To provide thermal stress relaxation type coated heat resistant structure parts by relaxing the thermal stress in the heat resistant coating layer in which temp. distribution is formed so that it is higher in percentage in a cross-sectional radial or longitudinal direction and to improve the reliability of a plant and to provide a method thereof. CONSTITUTION: A coating layer 8 of heat resistant material is laminated on the surface of structure parts 6 by forming a columnar crystal structure 8a, a fine crystalline grain structure 8b, or the columnar crystal structure 8a and the fine crystalline grain structure 8b. This heat resistant coating layer 8 has a function of developing fine cracks in a film-thickness direction by the application of thermal stress and relaxing the thermal stress. By this method, the thermal stress relaxation type coated heat resistant structure parts, excellent in heat resistance and thermal shock resistance, can be produced.

3. 发明专利

JPH08334432A FREE-PISTON-TYPE IMPACT WIND TUNNEL DEVICE AND MANUFACTURE THEREOF, AND NOZZLE THROAT THEREOF 失效
公开(公告)号：JPH08334432A
公开(公告)日：1996-12-17
申请号：JP14027995
申请日：1995-06-07
申请人： HITACHI LTD , HITACHI NUCLEAR ENG
发明人： YAMAGUCHI SHIZUKA , KOJIMA YOSHIYUKI , TAKAKUSAKI TSUNEHIKO , YOSHINO TOMOYA , ITAMI HIROYUKI , NAKANO SUSUMU , MATSUDA KENSHO
IPC分类号： G01M9/02
摘要： PURPOSE: To provide a free-piston-type impact wind tunnel device and manufacture thereof, and the nozzle throat thereof in which a high-durability heat resisting nozzle throat of a thermal stress relieving type that is excellent in heat resistance and heat-shock resistance and capable of operating in a high heat flow velocity region is used. CONSTITUTION: In the wind tunnel device, a hollow cylindrical nozzle throat 33 at the end of an impact wave tube 26 that is exposed to a high velocity air current and subjected to thermal stresses is made of a high strength material at high temperature and is provided with a plurality of splits on its inner circumferential surface, and also a heat-resisting material 7 is filled in the entire or inner circumferential surface of the slits so as to form a smooth inner circumferential surface.

4. 发明专利

JPH08135884A LOW THERMAL STRESS STRUCTURE BODY 失效
公开(公告)号：JPH08135884A
公开(公告)日：1996-05-31
申请号：JP27738894
申请日：1994-11-11
申请人： HITACHI LTD , HITACHI NUCLEAR ENG
发明人： MATSUDA KENSHO , ABE RYUSUKE , TAKAKUSAKI TSUNEHIKO , ITAMI HIROYUKI , NAKANO SUSUMU , YAMAGUCHI SHIZUKA , TAKEUCHI MAMORU , MATSUZAKA KYO
IPC分类号： F16L57/00 , F16L9/00
摘要： PURPOSE: To reduce the thermal stress even if the temperature distribution in the sectional radial direction or lengthwise direction is large and provide the structure having the prescribed functions, without suppressing the flow of the high temperature fluid and improve the reliability of a plant. CONSTITUTION: As for a structure body which shows the hollow cylinder 1, full cylinder, hollow disc, full disc shaped and axially symmetrical structure, a cut 6 is formed on the surface in contact with the high temperature fluid, and the width of the cut is set to the dimension permitting the slight closure by the thermal expansion, and the depth is set to the value up to the position where the compression stress becomes zero.

5. 发明专利

JPH1136805A TURBINE BLADE 失效
公开(公告)号：JPH1136805A
公开(公告)日：1999-02-09
申请号：JP18795897
申请日：1997-07-14
申请人： HITACHI LTD , HITACHI NUCLEAR ENG
发明人： TSURUKI MASAKI , MATSUDA KENSHO
IPC分类号： F01D5/28 , C30B29/52 , F02C7/00
摘要： PROBLEM TO BE SOLVED: To reduce the thermal stress generated on a section in parallel with a code direction in addition to the stress in a span direction, and to improve the material allowable value, by allowing three orthogonal crystalline axes to coincide with the directions of three main stress respectively within a specific value in an area where the maximum stress is generated. SOLUTION: Since a monocrystalline heat-proof alloy has a cubic system, it has three orthogonal crystalline axes. The directions of three crystalline axes are represented by the vectors , , . A z-axis direction is allowed to coincide with . The other two axes are in parallel with a code direction. The relationship between two axes and a blade section 2 in the code direction has eight symmetry axes in phase, because two axes are exchangeable. All phase relationship can be represented by the phase relationship of 0 deg.-45 deg. when the initial position relationship is 0 deg.. Further on a position where the maximum stress of a component in the code direction, of the generated stress, is generated, a direction of the vertical stress is allowed to coincide with one of three transverse crystalline axes within ±5 deg. in maximum.

6. 发明专利

JPH10185798A STRESS-LOAD ENVIRONMENT-RESISTANT-PROPERTY EVALUATION METHOD 失效
公开(公告)号：JPH10185798A
公开(公告)日：1998-07-14
申请号：JP34494396
申请日：1996-12-25
申请人： HITACHI LTD , HITACHI NUCLEAR ENG
发明人： ISHIBASHI MAKOTO , NAKAMURA SHIGEYOSHI , DOI HIROYUKI , MATSUDA KENSHO , KIMOTO HIROSHI
IPC分类号： G01N17/00 , G01N3/20
摘要： PROBLEM TO BE SOLVED: To obtain a stress-load environment-resistant-property evaluation method in which an environment-resistant property can be evaluated in a state that a bending stress load is maintained by a method wherein a jig by which a sample is loaded with a bending stress is used and a pseudo-environment reproduction device which adjusts the temperature, the pressure and the composition of an atmosphere inside a container used to house the jig is used. SOLUTION: A stress-load environment-resistant-property evaluation apparatus 1 is constituted of a jig 10 by which a sample is loaded with a bending stress, of a pseudo-environment reproduction device 20 which can adjust the temperature, the pressure and the composition of an atmosphere inside a container 21 used to house the jig 10 and of a laod device 30 by which the jig 10 is loaded. The load device 30 is provided with a controller 32 which controls the output of an actuator and with a load source 33 which supplies a hydraulic pressure to the actuator. The controller 32 performs a load control operation by which a constant load or a load at a programmed waveform is loaded and a strain-amount control operation by which a constant strain amount or a strain amount at a programmed waveform is loaded. The pseudo-environment reproduction device 20 is provided with a heating-furnace controller 25 which controls the temperature of a heating furnace 24 and with a corrosive-gas generation device 220 which generates a corrosive gas.

7. 发明专利

JPH07233908A GAS TURBINE BURNER 失效
公开(公告)号：JPH07233908A
公开(公告)日：1995-09-05
申请号：JP2231294
申请日：1994-02-21
申请人： HITACHI LTD
发明人： ICHIKAWA KUNIHIRO , MATSUDA KENSHO , AZUHATA SHIGERU , IIZUKA NOBUYUKI , MORITOMO YOSHIKAZU , NAKAYAMA SENJI
IPC分类号： F23C3/00
摘要： PURPOSE:To eliminate a damage of a flame stabilizer for a gas turbine burner by providing a plurality of notches opened at an upstream side end face of a cylindrical base and each having a depth toward a downstream side of a combustible premixed gas flowing direction. CONSTITUTION:A cylindrical base 22 of a flame stabilizer 13 is set, for example, by six flame stabilizer indicating plates 26. A peripheral length of the base 22 between the plates 26 is divided into three zones at an equal interval. Twelve notches 31 of a total amount each having a depth in a longitudinal direction of the stabilizer 13 are radially formed at the base 22 in each of the divided zones. That is, the notches are radially disposed with respect to an axis of a burner, and passed between inner and outer peripheries of the base 22. A circular hole 32 having a diameter of about three times as large as the width of the notch 31 is formed at the end of the notch 31 to prevent cracking from the notch 31. In this case, the more the number of the notches is increased, the greater a thermal stress generated at a connected part 27 of the base 22 to the plate 26 is decreased.

8. 发明专利

JPH04332315A GAS TURBINE BURNER 失效
公开(公告)号：JPH04332315A
公开(公告)日：1992-11-19
申请号：JP32944790
申请日：1990-11-30
申请人： HITACHI LTD
发明人： MATSUDA KENSHO , ISHIBASHI YOJI , IWAI KAZUMI , SAKURAI SHIGEO , SASADA TETSUO , TORITANI HAJIME
IPC分类号： F23C99/00 , F23D11/12 , F23R3/02 , F23R3/18 , F23R3/30
摘要： PURPOSE:To reduce temperature distribution and thermal stress and prevent a temperature rise which deteriorates materials by adopting supporting structure of a heavy walled and high rigidity flame stabiliezer in the internal part under thin walled skin structure, protecting the flame stabilizer from deformation and forming a cooling air passage. CONSTITUTION:A heavy walled supporting member 51 which forms a flame stabilizer 4 is fixed with an extended part 55 of a premixer which extends a premixer 6 and its outer peripheral part by means of welds 57 and 54. High pressure cooling air 107 is adapted to flow into the flame stabilizer 4 from the inside of a spring seal 52 passing through a cooling passage 56 installed to the extended part 55 of the premixer. A thin weld 57 and forms 50 is fixed with the premixer 6 by means of the walled outer skin a cooling air passage 59 for the air which has passed by a cooling chamber pore by way of a projection between the flame stabilizer supporting member 51. Therefore, this construction prevents the temperature of the outer skin 50 in direct contact with the flames from an abnormal rise and fails to produce a marked temperature distribution and thermal stress. It is also possible to protect the flame stabilizer 4 from thermal fatigue damage even when there occurs temperature fluctuations caused by swaying flames.

9. 发明专利

JPH06213447A GAS TURBINE BURNER AND FLAME STABILIZER THEREOF 失效
公开(公告)号：JPH06213447A
公开(公告)日：1994-08-02
申请号：JP779493
申请日：1993-01-20
申请人： HITACHI LTD
发明人： MATSUDA KENSHO , ICHIKAWA KUNIHIRO
IPC分类号： F23R3/18
摘要： PURPOSE:To improve reliability of a gas turbine burner by reducing thermal stress generated at a flame stabilizer and eliminating damage of the stabilizer. CONSTITUTION:A flame stabilizer 13 has a ring disc plate 22 of a trapezoidal sectional shape having an end face 21 and a cylindrical base 23. Nicks are formed at an equal interval longitudinally of the stabilizer 13 in a circumferential direction at a part of the plate 22 of the trapezoidal sectional shape in such a manner that the width of the nick has a size to be slightly closed by thermal expansion and a circular hole 25 of about three times as large as the width of the nick is provided at an end of the nick. Thus, repetitive thermal stress generated at the stabilizer, repetitive stress generated upon starting, stopping are reduced to prevent damage of the stabilizer. Accordingly, reliability of a gas turbine burner is improved.

10. 发明专利

JPH05141657A GAS TURBINE COMBUSTION DEVICE 失效
公开(公告)号：JPH05141657A
公开(公告)日：1993-06-08
申请号：JP30445191
申请日：1991-11-20
申请人： HITACHI LTD
发明人： MATSUDA KENSHO , SAKURAI SHIGEO , ISHIBASHI YOJI , IWAI KAZUMI , SASADA TETSUO , TORITANI HAJIME , IIZUKA NOBUYUKI , SATO ISAO , TAKABA MINORU , SHIMURA AKIRA
IPC分类号： F23R3/18 , F23R3/34
摘要： PURPOSE:To reduce a thermal stress generated at a flame holder, eliminate damage at the flame holder and improve a reliability in operation of a gas turbine combustion device due to the fact that the high thermal stress is generated at the flame holder which is essential to decrease NOx during an operation of the gas turbine combustion device and sever damage is applied to the device. CONSTITUTION:A flame holding device 13 is constructed such that some slits 24 are equally formed at a part of a truncated cone having a disk plate with an end surface 21, an inner circumferential surface 22 and an outer circumferential surface 23 in a radial direction of the flame holding device 13. A width of each of the slits 24 is set to have such a size as to not be closed by a thermal expansion and then an extreme end of each of the slits 24 is provided with a circular hole 25 of which size is about three times of the width of the slit 24.

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