JPS5783612A - Device for monitoring gap on tip of moving vane of axial-flow turbo-machine - Google Patents
Device for monitoring gap on tip of moving vane of axial-flow turbo-machineInfo
- Publication number
- JPS5783612A JPS5783612A JP15831180A JP15831180A JPS5783612A JP S5783612 A JPS5783612 A JP S5783612A JP 15831180 A JP15831180 A JP 15831180A JP 15831180 A JP15831180 A JP 15831180A JP S5783612 A JPS5783612 A JP S5783612A
- Authority
- JP
- Japan
- Prior art keywords
- moving vane
- tip
- gap
- laser
- rays
- 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
- 238000012544 monitoring process Methods 0.000 title abstract 2
- 230000007423 decrease Effects 0.000 abstract 1
- 230000001678 irradiating effect Effects 0.000 abstract 1
- 239000013307 optical fiber Substances 0.000 abstract 1
Landscapes
- Control Of Turbines (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
PURPOSE: To simply minotor the size of the gap on the tip of a moving vane, by irradiating laser rays in parallel with the axis of rotation, upon a point at a prescribed distance from the inside surface of a casing and by monitoring whether or not the tip of the moving vane intercepts the laser light rays.
CONSTITUTION: A laser light emitter 6 is housed in an opening 3a' provided in a stationary valne 3a located downstream to a moving vane 4. Laser rays 8 generated by the laser light emitter 6' are conducted into the gap 5 between the moving vane 4 and the inside surface 2' of a casing by way of a lens 6a, a reflector 6c, etc. The laser rays 8 having passed through the gap 5 are received by the receiver 7a of a laser ray reception unit 7 provided in an opening 8b' and are conducted to a photomultiplier tube 7' through an optical fiber 7" and converted into an electric signal (e). When the gap 5 on the tip of the moving vane 4 decreases and the moving vane intercepts the laser rays 8 and the electric signal (e) is cut off, the rotational frequency is reduced to prevent the moving vane from coming into contact with the casing 2.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15831180A JPS5783612A (en) | 1980-11-12 | 1980-11-12 | Device for monitoring gap on tip of moving vane of axial-flow turbo-machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15831180A JPS5783612A (en) | 1980-11-12 | 1980-11-12 | Device for monitoring gap on tip of moving vane of axial-flow turbo-machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5783612A true JPS5783612A (en) | 1982-05-25 |
Family
ID=15668850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15831180A Pending JPS5783612A (en) | 1980-11-12 | 1980-11-12 | Device for monitoring gap on tip of moving vane of axial-flow turbo-machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5783612A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5411364A (en) * | 1993-12-22 | 1995-05-02 | Allied-Signal Inc. | Gas turbine engine failure detection system |
-
1980
- 1980-11-12 JP JP15831180A patent/JPS5783612A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5411364A (en) * | 1993-12-22 | 1995-05-02 | Allied-Signal Inc. | Gas turbine engine failure detection system |
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