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1. 发明专利

JPH0355495A METHOD AND DEVICE FOR REMOVING ASH ADHERING TO HEAT TRANSFER PIPE OF BOILER 失效
公开(公告)号：JPH0355495A
公开(公告)日：1991-03-11
申请号：JP19004489
申请日：1989-07-21
申请人： CHUBU ELECTRIC POWER , BABCOCK HITACHI KK
发明人： NAKAMURA TADASHI , OTA OSAMU , HOIZUMI TATSURO , WATABE TSUNEO , MATSUMOTO TERUAKI , NAGASHIMA TOSHIJI , UMENISHI KOUJI , HIRAMATSU TETSUYUKI , WATANABE EIJI , YOKOBAYASHI TERUYUKI
IPC分类号： F22B37/56 , F22B37/48 , F28G13/00
摘要： PURPOSE:To peel off and disperse adhering ash from heat transfer pipes by permitting a heating means to perform heating from room temperature over specific temperature and allowing the device to be rapidly heated so as to form enough temperature difference to form an internal stress discontinuous part between the layers of a boiler heat transfer pipe surface part and the adhering ash. CONSTITUTION:The heat expansion characteristic of adhering ash rapidly changes in the range of 200-300 deg.C, particularly 250-300 deg.C by the change of a crystal structure. A heating means is allowed to heat to form temperature difference so as to form an internal stress discontinuous part in the boundary surface of a boiler heat transfer pipe surface part and the adhering ash or in the layer direction of the adhering ash fixed on heat transfer pipes and the adhering ash is embrittled or peeled off from the boundary surface between the heat transfer pipes and the adhering ash. For instance, after the adhering ash 22 fixed on and under of the heat transfer pipes 20a to be cleaned is irradiated by high energy visible rays and near infrared rays to peel off, disperse and remove, the heat transfer pipes 20a are put between both the sides with the use of a heater body 1 to whole-circumferentially irradiate the adhering ash 22 so as to peel off and disperse.

2. 发明专利

JP2002090349A FLAW DETECTION METHOD BASED ON ELECTROMAGNETIC ULTRASONIC WAVE AND ELECTROMAGNETIC ULTRASONIC FLAW DETECTOR 失效
公开(公告)号：JP2002090349A
公开(公告)日：2002-03-27
申请号：JP2000286630
申请日：2000-09-21
申请人： KANSAI ELECTRIC POWER CO , BABCOCK HITACHI KK
发明人： KAMIMURA ISHIO , NISHIHARA YASUO , MATSUMOTO TERUAKI , NISHII YASUNORI
IPC分类号： G01N29/04
摘要： PROBLEM TO BE SOLVED: To provide a flaw detection technique based on an electromagnetic ultrasonic wave so as to be able to improve the flaw detection ability. SOLUTION: An electromagnetic ultrasonic flaw detector is provided with a static magnetic field generating magnet 5 generating a static magnetic field inside a tested material 1, transmitting means 3 and 13 feeding pulse current to a transmission coil 3 so as to generate an eddy current inside the tested material 1, and receiving means 7 and 13 receiving a reflection echo of the ultrasonic wave, which is generated by oscillation of the surface of the tested material 1 caused by the static magnetic field and the eddy current generated inside the tested material 1, from a flaw detection part in the tested material 1. The receiving means 7 and 13 switch a receiving coil 7 receiving the reflection echo according to a transmission frequency so as to change a receiving position. In this way, the receiving position is changed in compliance with the ultrasonic wave transmission frequency defining an ultrasonic wave incident angle, so that the reflection echo can be received in a reflection echo arrival position. Consequently, flaw detection ability can be improved because reflection echo with a sufficient size can be received.

3. 发明专利

JP2000234986A SYSTEM AND METHOD FOR EVALUATING CRACK DEVELOPMENT 失效
公开(公告)号：JP2000234986A
公开(公告)日：2000-08-29
申请号：JP3789799
申请日：1999-02-16
申请人： BABCOCK HITACHI KK
发明人： KOYAMA TERUO , KIKUHARA SEIJI , MATSUMOTO TERUAKI
IPC分类号： G01M99/00 , G01M19/00
摘要： PROBLEM TO BE SOLVED: To easily evaluate the crack development of a plant configuration material by calculating a fracture mechanics parameter, and by calculating the cracking speed at a specific site by the relationship database storage means between a parameter value and the crack speed. SOLUTION: In a crack development-evaluating device, a shape, dimensions, temperature, pressure, crack length, crack position, and the like are changed in advance at a required site, a crack development is analyzed by the finite element method, and a fracture mechanics parameter is calculated. Database in which the relationship between the parameter and the temperature, the pressure, the crack length, the crack position, and the like is enciphered is created and stored. By utilizing the database, temperature and pressure measured by a temperature/pressure-measuring device, the quality of a material and dimensions from design database, and the crack length and position measured by the crack-detecting device are inputted to analyze crack development. In this manner, the crack development-evaluating device is combined with the crack-detecting device, thus simultaneous and quick crack-detection and crack development evaluation is made possible.

4. 发明专利

JP2000167497A WATER JET NOZZLE 失效
公开(公告)号：JP2000167497A
公开(公告)日：2000-06-20
申请号：JP34904998
申请日：1998-12-08
申请人： BABCOCK HITACHI KK
发明人： SATO KAZUNORI , MIZOGUCHI TADAAKI , MATSUMOTO TERUAKI , TOYOOKA YASUO
IPC分类号： B08B3/02 , B05B1/02 , B05B1/34
摘要： PROBLEM TO BE SOLVED: To accelerate cavitation within a cup-shaped cavity part at the front end of the ejection hole of a nozzle. SOLUTION: The water jet nozzle which injects a high-velocity water jet 14 from the ejection hole at its center, is provided with the cavity part 11 of an approximately cup shape at the front end of the central ejection hole and destroys and removes deposits or finely grinds and decomposes the hazardous materials in the water, is so constituted as to eject a low-velocity water stream 22 from the outer side of the cavity part toward the high-velocity water jet at such an angle θ at which this low-velocity water stream runs backward with respect to the high-velocity water jet 14 from the central ejection hole 19. Additionally, the low-velocity water stream 22 is ejected from the plural ejection holes opened at the inside wall of the approximately cup-shaped cavity part. The low-velocity water stream 22 is ejected from the slit-like aperture 20 disposed at the inside wall of the approximately cup-shaped cavity-part.

5. 发明专利

JP2000107692A SOUND GENERATOR AND ASH REMOVING DEVICE FOR COMBUSTION FURNACE 失效
公开(公告)号：JP2000107692A
公开(公告)日：2000-04-18
申请号：JP28284998
申请日：1998-10-05
申请人： TOHOKU ELECTRIC POWER CO , BABCOCK HITACHI KK
发明人： TADA TOSHIO , SAKUYAMA KAZUHIRO , KANISAWA YOICHI , TAKAHASHI RYOJI , MATSUMOTO TERUAKI , YAMAGUCHI RYOSUKE , YAMADA KOUJIROU , FUJIMURA TOMOYUKI
IPC分类号： B06B1/04 , F23J1/06
摘要： PROBLEM TO BE SOLVED: To enable amplifying sound waves to a sound pressure level of high output effective for industrial use to enable continuous use. SOLUTION: This sound generator is provided with a speaker 5 and a speaker box 24, a resonance cylinder 29 extending from the speaker box 24 and for amplifying sound waves generated from the speaker 5, a silencer 26, and a balance pipe 33 installed outside the resonance cylinder 29 and for discharging cooling air to a space positioned at the head of the resonance cylinder 29. The speaker 5 has a cooling nozzle 22 for feeding air to a driving coil 6 to cool it. The speaker box 24 is formed so that its length is 2.5 or more times its diameter and has a discharge port for making the discharge velocity of cooling air 5 m/s or less. The resonance cylinder 29 has an equalizer 31 for amplifying the generated sound pressure of the speaker 5 over a wide band.

6. 发明专利

JPH0961090A CLEANING DEVICE OF TUBE BODY 失效
公开(公告)号：JPH0961090A
公开(公告)日：1997-03-07
申请号：JP21759795
申请日：1995-08-25
申请人： BABCOCK HITACHI KK
发明人： YAMADA KOUJIROU , MATSUMOTO TERUAKI , IMON MIYAKO
IPC分类号： B08B9/02 , F28G7/00
摘要： PROBLEM TO BE SOLVED: To provide boiler equipment enabling improvement of an effect of removing-cleaning ashes and others. SOLUTION: The title device is equipped with at least two oscillating bodies 3A and 3B, a frequency controller 8 regulating an oscillation frequency of at least one of the oscillating bodies 3A and 3B and a sound pressure sensor 7 detecting a sound pressure level of a space wherefrom combustion ashes and the like are to be removed, and the oscillation frequency of the oscillating body 3B is regulated according to an output of the sound pressure sensor 7.

7. 发明专利

JPH0961088A CLEANING DEVICE OF TUBE BODY 失效
公开(公告)号：JPH0961088A
公开(公告)日：1997-03-07
申请号：JP21629595
申请日：1995-08-24
申请人： BABCOCK HITACHI KK
发明人： MATSUMOTO TERUAKI , IMON MIYAKO , ORIMOTO MANABU , YAMADA KOUJIROU
IPC分类号： B08B9/02 , F28G7/00
摘要： PROBLEM TO BE SOLVED: To provide a cleaning device of a tube body being excellent in a cleaning efficiency, without making the device very large. SOLUTION: Acoustic wave generating devices 4 are so provided as to be opposed to hollow parts 3 formed between tube body groups 2 and the adjacent ones 2. The hollow parts 3 including the tube body groups 2 are put in a resonance mode by acoustic waves emitted from the acoustic wave generating devices 4 and thereby dust and the like sticking on tube bodies are removed.

8. 发明专利

JPH01111103A SHIFTER AMONG HEAT-TRANSFER TUBE GROUP 失效
公开(公告)号：JPH01111103A
公开(公告)日：1989-04-27
申请号：JP7900187
申请日：1987-03-31
申请人： BABCOCK HITACHI KK
发明人： MATSUMOTO TERUAKI , WATABE TSUNEO
IPC分类号： F28G15/04 , F22B37/02
摘要： PURPOSE: To perform cleaning, inspection and the like by a method wherein a claw section capable of holding and pressure welding a heat exchanger tube in a working area is installed on a unit, the claw section is arranged relatively movably in relation to the unit while holding and opening the claw section at a specified timing. CONSTITUTION: A moving device 10 is installed on a heat exchanger tube 8 of a heat exchanger tube block 4 in a working area. A claw 31 is opened, and a clamper 12 is closed. When a motor 32 is rotated, a driving mechanism section 20 is moved to the left side by the rotation of a worm gear. A rotating brush and an inspection sensor incorporated in the driving mechanism section 20 are actuated, and cleaning and inspection of the heat exchanger tube 8 are executed. The moving device 10 reaches the vicinity of a side section of a main body 11 to stop the motor 32, holds the heat exchanger tube 8 by means of the claw 31 of the driving mechanism section 20, and causes the clamper to move back. When the motor 32 is rotated, only the main body 11 is moved to the left side with the driving mechanism section 20 remaining stopped. By moving forward the clamper 12 to hold the heat exchanger tube 8 and move back the claw 31, the moving device 10 can be automatically moved in order over the entire length of the width of the heat exchanger tube. In addition, the moving device 10 can be moved to the lengthwise direction of the heat exchanger tube.

9. 发明专利

JPS63243603A SHIFTER AMONG HEAT TRANSFER TUBE GROUP 失效
公开(公告)号：JPS63243603A
公开(公告)日：1988-10-11
申请号：JP7421987
申请日：1987-03-30
申请人： BABCOCK HITACHI KK
发明人： MATSUMOTO TERUAKI , WATABE TSUNEO , SOGO HIROSHI
IPC分类号： F28G15/04 , F22B37/02

10. 发明专利

JPS63145908A MEASUREMENT OF THICKNESS 失效
公开(公告)号：JPS63145908A
公开(公告)日：1988-06-18
申请号：JP29161186
申请日：1986-12-09
申请人： BABCOCK HITACHI KK
发明人： MATSUMOTO TERUAKI
IPC分类号： G01B17/02
摘要： PURPOSE:To enable accurate measurement of the thickness of metal material without removing any scale, by measuring the thickness of the scale adhering to material to be inspected varying the permeation depth thereof. CONSTITUTION:An exciting coil 3 is excited with an exciting power source 15 to form a magnetostatic field. Then, a pulse current flows through a receiving /transmitting coil 4 with a controller 14 to generate an eddy current in material to be inspected. The Lorentz's force is generated by the eddy current and the magnetostatic field to cause an elastic vibration in the material being inspected. An ultrasonic wave is generated by the elastic vibration and received with the coil 4. The velocity of the ultrasonic wave can be determined previously according to the quality of the material being inspected and it is compared with the results of measurement obtained by a given sequence to learn the thickness of a tube to which a scale 1c adheres. The true thickness of the tube can be learned by subtracting the thickness of the scale from the total thickness. The thickness of the scale 1c can be found by adjusting the permea tion depth of eddy current in the material being inspected to minimize the sound pressure level.

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