JPS5675907A - Life prospecting method for high-temperature, high-pressure casing - Google Patents
Life prospecting method for high-temperature, high-pressure casingInfo
- Publication number
- JPS5675907A JPS5675907A JP15208979A JP15208979A JPS5675907A JP S5675907 A JPS5675907 A JP S5675907A JP 15208979 A JP15208979 A JP 15208979A JP 15208979 A JP15208979 A JP 15208979A JP S5675907 A JPS5675907 A JP S5675907A
- Authority
- JP
- Japan
- Prior art keywords
- casing
- crack
- life
- passage
- time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
PURPOSE: To monitor a change of a crack with the passage of time to prospect a life of a casing by detecting a depth of the crack with a current input line and a voltage measuring line which are fitted on a casing.
CONSTITUTION: A current input line 4 and a voltage measuring line 5 are fixed on a valve casing 1, and a constant current is supplied to them from a constant-current generator 7 to record a change of voltage valued with the passage of time by a voltage recorder 8. A depth and a position of a crack can be judged from the values to prevent steam leakage. An outbreaking and development of a crack in a surface of the casing 1 can be thus automatically monitored with the passage of time without open the casing 1 or disassembling a heat insulating material, etc.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15208979A JPS5675907A (en) | 1979-11-26 | 1979-11-26 | Life prospecting method for high-temperature, high-pressure casing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15208979A JPS5675907A (en) | 1979-11-26 | 1979-11-26 | Life prospecting method for high-temperature, high-pressure casing |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5675907A true JPS5675907A (en) | 1981-06-23 |
JPS6243043B2 JPS6243043B2 (en) | 1987-09-11 |
Family
ID=15532799
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15208979A Granted JPS5675907A (en) | 1979-11-26 | 1979-11-26 | Life prospecting method for high-temperature, high-pressure casing |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5675907A (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5288391A (en) * | 1976-01-20 | 1977-07-23 | Nippon Kokan Kk | Method of detecting damage of metal pipe provided on rotary drum |
JPS5329508U (en) * | 1976-08-19 | 1978-03-14 | ||
JPS5343109A (en) * | 1976-10-01 | 1978-04-19 | Hitachi Ltd | Steam turbine rotor heat stress monitoring system |
-
1979
- 1979-11-26 JP JP15208979A patent/JPS5675907A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5288391A (en) * | 1976-01-20 | 1977-07-23 | Nippon Kokan Kk | Method of detecting damage of metal pipe provided on rotary drum |
JPS5329508U (en) * | 1976-08-19 | 1978-03-14 | ||
JPS5343109A (en) * | 1976-10-01 | 1978-04-19 | Hitachi Ltd | Steam turbine rotor heat stress monitoring system |
Also Published As
Publication number | Publication date |
---|---|
JPS6243043B2 (en) | 1987-09-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS523486A (en) | Detecting method of the surface flaw of metal material | |
ES8204498A1 (en) | Method and apparatus for gravel packing multiple zones | |
ES8306519A1 (en) | Method and apparatus for gravel packing multiple zones | |
JPS5245953A (en) | Method for inspecting metal body by use of disturbances in blanced | |
JPS57108416A (en) | Controller for timing of fuel supply at starting of gas turbine engine | |
JPS5697734A (en) | Combustion chamber for gas turbine and its operation method | |
JPS5675907A (en) | Life prospecting method for high-temperature, high-pressure casing | |
JPS5676767A (en) | Detecting method for abnormality in swing-type nonreturn valve | |
JPS5334008A (en) | Misfire detector for gas turbine | |
JPS5377583A (en) | Detecting and alarming method for gas leakage | |
JPS55143426A (en) | Supervising method for life consumption of steam valve casing | |
JPS52111785A (en) | Flaw detector | |
JPS55144535A (en) | Measuring method of amount of heat by contact combustion type gas detector | |
JPS52107002A (en) | Apparatus for measuring temperature of combustion chamber of coke oven | |
JPS5322370A (en) | Inspecting method of semiconductor device | |
JPS5381180A (en) | Leak detecting method of shutting valve for fuels | |
JPS5428050A (en) | Refrigerator with means for sensing failure of coolant | |
JPS55112657A (en) | Computer inspection unit | |
JPS51135590A (en) | Surface defect detection method and its equipment | |
JPS51134685A (en) | Fluid softness measurement method | |
JPS5412840A (en) | Measuring method for surface potential of electrophotographic photoreceptor by time series | |
JPS538833A (en) | Furnace hot water leakage detector | |
JPS5379596A (en) | Pipeline leakage monitoring system | |
JPS5630516A (en) | Supervising method of consumption of service life of burner tip | |
JPS5315878A (en) | Leak tester |