JPS5575630A - Monitor method for damage to welded joint of stay ring and stay vane of hydraulic machine - Google Patents
Monitor method for damage to welded joint of stay ring and stay vane of hydraulic machineInfo
- Publication number
- JPS5575630A JPS5575630A JP14792878A JP14792878A JPS5575630A JP S5575630 A JPS5575630 A JP S5575630A JP 14792878 A JP14792878 A JP 14792878A JP 14792878 A JP14792878 A JP 14792878A JP S5575630 A JPS5575630 A JP S5575630A
- Authority
- JP
- Japan
- Prior art keywords
- stay
- damage
- welded
- ring
- vane
- 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.)
- Pending
Links
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
PURPOSE: To continuously monitor the presence of damage of welded joint without stopping running, by providing the space at the welded joint of stay ring and stay vane of water wheel and detecting the change in gas state at the space.
CONSTITUTION: The stay ring 2 and the stay vane 3 of the water turbine are welded and jointed so that the unwelded part 9 sealed with the welded joints 8... isolated from external can be formed at the center to minimize the wasted molten metal in response to the distribution of tensile stress produced at running. Drill holes are made leading to the unwelded part 9 with the vane 3 and the ring 2 has the detection hole 12, through which the pressure and moisture inspection sensor 13 is connected to detect the gas condition in the unwelded part 9 dut to water leakage by the damage of the welded parts 8... to the space formed with the unwelded part 9. Thus, without interrupting running, the presence of the damage production of the welded joints can continuously be monitored.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14792878A JPS5575630A (en) | 1978-12-01 | 1978-12-01 | Monitor method for damage to welded joint of stay ring and stay vane of hydraulic machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14792878A JPS5575630A (en) | 1978-12-01 | 1978-12-01 | Monitor method for damage to welded joint of stay ring and stay vane of hydraulic machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5575630A true JPS5575630A (en) | 1980-06-07 |
Family
ID=15441239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14792878A Pending JPS5575630A (en) | 1978-12-01 | 1978-12-01 | Monitor method for damage to welded joint of stay ring and stay vane of hydraulic machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5575630A (en) |
-
1978
- 1978-12-01 JP JP14792878A patent/JPS5575630A/en active Pending
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