Method and device for monitoring and locating leakage of fluid delivering pipeline
A technology for pipeline leakage and fluid transportation, which is applied in pipeline systems, measuring devices, gas/liquid distribution and storage, etc. It can solve the problems that natural systems cannot have practical value, breakthroughs cannot be made in the field, and data cannot be obtained accurately. , to achieve the effect of eliminating errors, reducing losses and improving accuracy
Inactive Publication Date: 2004-02-11
北京昊科航科技有限责任公司
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Problems solved by technology
It can be said that if the errors of various sensors are so small as to be negligible, it is not difficult to implement the above invention, but the problem is that the signal changes to be detected are often much smaller than the errors of the sensors themselves. If this problem is not solved, the Chinese invention It is very difficult to apply the technology of the patent application No. 96121000.1 in engineering
As for other methods, such as flow difference method, pressure difference method, sound listening method, pressure fluctuation detection method, pipeline modeling method, etc., they have not become a technology that can be popularized and applied in engineering. The reasons are different, but there are One thing is the same, that is, the signal is weak and the anti-interference ability is poor
And this problem is the key to the inability to make breakthroughs in this field at present.
In terms of data collection and processing, most methods are based on the basic equations of fluid mechanics, but the data to be obtained by this method cannot be obtained accurately, and the natural system cannot have practical value
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[0015] The two ends of the pipeline with length L are station A and station B respectively. The fluid in station A enters pipeline L through pump 1, outlet valve 2, flow meter 3 and pressure gauge 4. After passing through pipeline L, the fluid begins to flow into B. stand. At the entrance of station B, a pressure gauge 5 and a flowmeter 6 are installed. The fluid from the flowmeter can flow through the valve 7 into the tank 8, or through the valve 9 into the tank 10. Under normal operation, the fluid flowing through L The flow rate changes according to the production needs, which are respectively A station operation and B station operation, and the result of the operation is mainly to change the flow rate. When station A is operating, it is divided into increasing flow and reducing flow. When the flow needs to be increased, the flow can be increased by increasing the speed of the pump 1 or opening the outlet valve 2, so that the flow Q1 flowing through the flow meter 3 will in...
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An intelligent monitor equipment composed of two computers (or intelligent meters) set up at both ends of pipeline to be monitored and a transmission medium to connect them is used. The pressure signals and flows at both ends are acquired. The pressure drop and flow difference are calculated to judge if there is leakage. The measured relationship curve of the pressure wave transfer speed to flow difference is measured to determine the leaking point. Its advantages include self-test, adaptive and self-learing functions.
Description
1. Technical field [0001] The invention relates to a fluid conveying pipeline, which belongs to the technical field of pipeline monitoring in use, in particular to a method for monitoring and locating fluid pipeline leakage, especially for monitoring and locating various long-term buried pipelines. 2. Background technology [0002] In the field of fluid delivery pipeline monitoring technology, there are many methods at home and abroad. In this respect, the Chinese invention patent application No. 96121000.1 is described in detail. Compared with other technologies, the Chinese invention patent application No. 96121000.1 is the most creative, which is also the technology. The latest technology currently available in the field. This technology is to install a number of sensors in the pipeline, delivery pump and pipeline environment to collect, store and transmit signals reflecting the operation status of the pipeline system, and analyze the neural network model with the time do...
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IPC IPC(8): F17D5/02F17D5/06G01D21/00
Inventor 陈久会王亚民
Owner 北京昊科航科技有限责任公司