MD751B1 - Determination method of the leak coordinates in the pipe-lines - Google Patents
Determination method of the leak coordinates in the pipe-linesInfo
- Publication number
- MD751B1 MD751B1 MD960195A MD960195A MD751B1 MD 751 B1 MD751 B1 MD 751B1 MD 960195 A MD960195 A MD 960195A MD 960195 A MD960195 A MD 960195A MD 751 B1 MD751 B1 MD 751B1
- Authority
- MD
- Moldova
- Prior art keywords
- signals
- leak
- receipt
- receipted
- pipe
- Prior art date
Links
- 238000005259 measurement Methods 0.000 abstract 3
- 230000002596 correlated effect Effects 0.000 abstract 1
- 230000000875 corresponding effect Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The invention relates to the pipe-line leakage test and permits to increase the determination accuracy of the leaking place by determining the difference in the times of the acoustic signals input from the leak to the receipt point thereof. The acoustic signals are receipted from the leak in two points on the pipe-line surface. In every measurement channel the signals consequently through the amplifier and the shaper are receipted into the shift register. By the help of the shift signal generators is made the delay of the signals in the shift registor. Then the signals are receipted at the AND gate inputs. On the second AND gate inputs of a measurement channel are receipted the signals from the shaper of the other measurement channel. The signals by that coincide with the inputs of that AND gate, to which the difference in the times of the signal receipt is corresponding to the acoustic signal receipt point, which is within the limits of the value of the discrete signal delay step. The modification of the signal delay step is made till the receipt of two contiguous maximums of equal value on the correlated curve. The determination of the leak coordinates is made subject to distance between the receipt points of the acoustic signals, value, the number of the delay steps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MD96-0195A MD751C2 (en) | 1985-04-23 | 1996-08-19 | Determination method of the leak coordinates in the pipe lines |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU853888179A SU1283566A1 (en) | 1985-04-23 | 1985-04-23 | Method of determining coordinates of leakage in pipelines |
| MD96-0195A MD751C2 (en) | 1985-04-23 | 1996-08-19 | Determination method of the leak coordinates in the pipe lines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| MD751B1 true MD751B1 (en) | 1997-06-30 |
| MD751C2 MD751C2 (en) | 1997-12-31 |
Family
ID=26640657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MD96-0195A MD751C2 (en) | 1985-04-23 | 1996-08-19 | Determination method of the leak coordinates in the pipe lines |
Country Status (1)
| Country | Link |
|---|---|
| MD (1) | MD751C2 (en) |
-
1996
- 1996-08-19 MD MD96-0195A patent/MD751C2/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| MD751C2 (en) | 1997-12-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG4A | Patent for invention issued | ||
| IF99 | Valid patent on 19990615 |
Free format text: EXPIRES: 20050423 |