RU2000105210A - METHOD FOR ASSESSING PIPELINE WALL CONDITION - Google Patents
METHOD FOR ASSESSING PIPELINE WALL CONDITIONInfo
- Publication number
- RU2000105210A RU2000105210A RU2000105210/28A RU2000105210A RU2000105210A RU 2000105210 A RU2000105210 A RU 2000105210A RU 2000105210/28 A RU2000105210/28 A RU 2000105210/28A RU 2000105210 A RU2000105210 A RU 2000105210A RU 2000105210 A RU2000105210 A RU 2000105210A
- Authority
- RU
- Russia
- Prior art keywords
- pipeline
- frequency
- assessing
- acoustic noise
- correlation function
- Prior art date
Links
- 230000005534 acoustic noise Effects 0.000 claims 7
- 238000005314 correlation function Methods 0.000 claims 6
- 238000006073 displacement reaction Methods 0.000 claims 2
- 230000001133 acceleration Effects 0.000 claims 1
Claims (5)
hi~ h0(f0/fi),
где hi - толщина стенки трубопровода в зоне максимума корреляционной функции акустического шума в полосе с центральной частотой fi, h0 - номинальная толщина стенки, f0 - частота основного тона акустического шума в трубопроводе на участке с номинальной толщиной стенки.1. The method of assessing the state of the wall of the pipeline, in which acoustic noise is recorded at two points along the length of the pipeline from the movement of the medium moving in it, the correlation function of these noises is calculated, the emergency location is determined by the position of the maximum of the correlation function, characterized in that the correlation function of two acoustic flows noise is determined for a number of fixed frequency bands with the allocation of the center frequency (f i ), fix the center frequency (f i ) at which there is a maximum correlation function, determine the frequency of the fundamental tone of acoustic noise (f 0 ) in the pipeline with a nominal wall thickness (h 0 ), and the state of the pipeline wall at the maximum correlation function is judged from the relation
h i ~ h 0 (f 0 / f i ),
where h i is the wall thickness of the pipeline in the zone of maximum correlation function of acoustic noise in the strip with a central frequency f i , h 0 is the nominal wall thickness, f 0 is the frequency of the fundamental tone of acoustic noise in the pipeline in the area with the nominal wall thickness.
f0~ V/S,
где V - виброскорость,
S - вибросмещение.4. The method of assessing the condition of the wall according to claim 1 or 3, characterized in that the frequency of the fundamental tone of the acoustic noise of the pipeline is determined by vibration parameters from the ratio
f 0 ~ V / S,
where V is the vibration velocity,
S - vibration displacement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2000105210/28A RU2194977C2 (en) | 2000-03-03 | 2000-03-03 | Method of estimation of state of pipe line wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2000105210/28A RU2194977C2 (en) | 2000-03-03 | 2000-03-03 | Method of estimation of state of pipe line wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RU2000105210A true RU2000105210A (en) | 2002-01-27 |
| RU2194977C2 RU2194977C2 (en) | 2002-12-20 |
Family
ID=20231348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2000105210/28A RU2194977C2 (en) | 2000-03-03 | 2000-03-03 | Method of estimation of state of pipe line wall |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU2194977C2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120222471A1 (en) * | 2009-08-03 | 2012-09-06 | Ultimo Measurement, Llc | Method and apparatus for measurement of physical properties of free flowing materials in vessels |
| WO2014124182A2 (en) | 2013-02-06 | 2014-08-14 | Ultimo Measurement Llc | Non-invasive method for measurement of physical properties of free flowing materials in vessels |
| US9816848B2 (en) | 2014-01-23 | 2017-11-14 | Ultimo Measurement Llc | Method and apparatus for non-invasively measuring physical properties of materials in a conduit |
-
2000
- 2000-03-03 RU RU2000105210/28A patent/RU2194977C2/en not_active IP Right Cessation
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