Pipeline leak detection apparatus, and methods thereof
An apparatus for the continuous monitoring of a pipeline or a pipeline network carrying flowing media that can not only detect the presence of a leak but also locate the source of the leak through the use of rarefraction wave detection and methods of using the same is disclosed within. The apparatus and method are specifically configured to locate the leak source within less than 36 inches using a calibration means and a noise cancellation means.
1. A pipeline leak detection apparatus for detection and location of a leak in a pipeline, the apparatus comprising:
a first pressure sensing means fluidly connected to the pipeline;
a second pressure sensing means fluidly connected to the pipeline, wherein the second pressure sensing means is a known distance from the first pressure sensing means;
a processor means, wherein the first pressure sensing means is communicatively connected to the processor means and wherein the second pressure sensing means is communicatively connected to the processor means;
a memory storage means operatively coupled to the processor means;
instructions stored in the memory storage means and executable by the processor means to instruct the apparatus to:
upon a first trigger event, instruct the first pressure sensing means to measure pressure and to transmit a first data point to the processor means;
contemporaneously store the first data point into a first data set located in the memory storage means;
analyze the first data point to identify a first pressure event;
if the first pressure event is temporally located in the center of the first data set, store the first data set in the memory storage means;
determine whether the first data set is the only data set or if it is a data set received from the second pressure sensing means;
if the first data set was received from the second pressure sensing means, analyze the first data set for the first pressure event; and
determine a location of the first pressure event along the pipeline.
2. The apparatus of claim 1 , wherein the instructions comprise further instructions to instruct the apparatus to:
if the location is not within a distance uncertainty of the first pressure sensing means or located at the first pressure sensing means, report the location of the first pressure event is to a user via an user interface.
3. The apparatus of claim 1 , wherein the instructions comprise further instructions to instruct the apparatus to:
use a temperature measurement from a temperature sensing means to determine the location of the first pressure event.
4. The apparatus of claim 2 , wherein the instructions comprise further instructions to instruct the apparatus to:
when the location of the first pressure event is within the distance uncertainty of the first pressure sensing means, use a third data point and a third data set from a third pressure sensing means to determine the location of the first pressure event, wherein the third pressure sensing means is adjacent to the second pressure sensing means but not adjacent to the first pressure sensing means.
5. The apparatus of claim 4 , wherein the instructions comprise further instructions to instruct the apparatus to:
use a temperature measurement from a temperature sensing means to determine the location of the first pressure event.
6. The apparatus of claim 1 , wherein the instructions comprise further instructions to instruct the apparatus to:
when the first pressure event is not present, wait for a second trigger event; and
upon the second trigger event, instruct the first pressure sensing means to measure pressure and to transmit a second data point to the processor means;
contemporaneously store the second data point into a second data set located in the memory storage means;
analyze the second data point to identify a second pressure event;
if the second pressure event is temporally located in the center of the second data set, store the second data set in the memory storage means;
determine whether the second data set is the only data set or if it is a data set received from the second pressure sensing means;
if the data set was received from the second pressure sensing means, analyze the second data set for the second pressure event; and
determine a location of the second pressure event along the pipeline.
7. The apparatus of claim 1 , wherein one or more of the first pressure sensing means and the second pressure sensing means comprises a fitting configured to dispose the pressure sensing means on a pipeline or pipeline network.
8. The apparatus of claim 1 , wherein one or more of the first pressure sensing means and the second pressure sensing means comprises a ball valve, bleed-off valve, a quarter turn valve or a small bore valve.
9. The apparatus of claim 1 , wherein one or more of the first pressure sensing means and the second pressure sensing means comprises a fitting configured to connect to a hose.
10. The apparatus of claim 1 , wherein at least one of the pressure sensing means comprises a differential pressure transducer.
11. The apparatus of claim 1 , wherein at least one of the pressure sensing means comprises an absolute pressure transducer.
12. The apparatus of claim 1 , wherein at least one of the pressure sensing means comprises a gauge referenced pressure transducer.
13. One or more nontransitory computer-readable storage media comprising computer-executed instructions to instruct a computing device to:
upon a first trigger event, instruct the first pressure sensing means to measure pressure and to transmit a first data point to the processor means;
contemporaneously store the first data point into a first data set located in the memory storage means;
analyze the first data point to identify a first pressure event;
if the first pressure event is temporally located in the center of the first data set, store the first data set in the memory storage means;
determine whether the first data set is the only data set or if it is a data set received from the second pressure sensing means;
if the first data set was received from the second pressure sensing means, analyze the first data set for the first pressure event; and
determine a location of the first pressure event along the pipeline.
14. The one or more nontransitory computer-readable storage media of claim 13 , wherein the computer-executable instruction comprise computer-executable instructions to instruct the computing device to:
if the location is not within a distance uncertainty of the first pressure sensing means or located at the first pressure sensing means, report the location of the first pressure event is to a user via an user interface.
15. The one or more nontransitory computer-readable storage media of claim 14 , wherein the computer-executable instruction comprise computer-executable instructions to instruct the computing device to:
use a temperature measurement from a temperature sensing means to determine the location of the first pressure event.
16. The one or more nontransitory computer-readable storage media of claim 13 , wherein the computer-executable instruction comprise computer-executable instructions to instruct the computing device to:
when the location of the first pressure event is within the distance uncertainty of the first pressure sensing means, use a third data point and a third data set from a third pressure sensing means to determine the location of the first pressure event, wherein the third pressure sensing means is adjacent to the second pressure sensing means but not adjacent to the first pressure sensing means.
17. The one or more nontransitory computer-readable storage media of claim 16 , wherein the computer-executable instruction comprise computer-executable instructions to instruct the computing device to:
use a temperature measurement from a temperature sensing means to determine the location of the first pressure event.
18. The one or more nontransitory computer-readable storage media of claim 13 , wherein the computer-executable instruction comprise computer-executable instructions to instruct the computing device to:
when the first pressure event is not present, wait for a second trigger event; and
upon the second trigger event, instruct the first pressure sensing means to measure pressure and to transmit a second data point to the processor means;
contemporaneously store the second data point into a second data set located in the memory storage means;
analyze the second data point to identify a second pressure event;
if the second pressure event is temporally located in the center of the second data set, store the second data set in the memory storage means;
determine whether the second data set is the only data set or if it is a data set received from the second pressure sensing means;
if the data set was received from the second pressure sensing means, analyze the second data set for the second pressure event; and
determine a location of the second pressure event along the pipeline.