CN202852430U - Oil and gas pipeline leak detection system based on flow equilibrium and low frequency wave technology - Google Patents
Oil and gas pipeline leak detection system based on flow equilibrium and low frequency wave technology Download PDFInfo
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- CN202852430U CN202852430U CN 201220538227 CN201220538227U CN202852430U CN 202852430 U CN202852430 U CN 202852430U CN 201220538227 CN201220538227 CN 201220538227 CN 201220538227 U CN201220538227 U CN 201220538227U CN 202852430 U CN202852430 U CN 202852430U
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Abstract
The utility model belongs to the oil and gas pipeline science and technology precaution technical field, and particularly relates to an oil and gas pipeline leak detection system based on flow equilibrium and low frequency wave technology. The oil and gas pipeline leak detection system based on the flow equilibrium and the low frequency wave technology comprises a pipeline, a mass flow meter and a low frequency wave sensor, wherein the mass flow meter and the low frequency wave sensor are respectively arranged at the upper end and the lower end of the pipeline and are both connected with an intelligent signal processor, and the intelligent signal processor is connected with a computer system through network. According to the oil and gas pipeline leak detection system based on the flow equilibrium and the low frequency wave technology, judgement of pipeline leakage is achieved by coupling of a pipeline balance method and the low frequency wave technology and combination with differential flow, and defects of single detection method and low alarm accuracy in the prior art are overcome. The oil and gas pipeline leak detection system based on the flow equilibrium and the low frequency wave technology is suitable for leakage detection of both a crude oil and product oil pipeline and a gas transportation pipeline, and good in anti-interference capacity and anti-signal-leakage capacity. Convenient measurement, high accuracy, information sharing, complementary of advantages and reliable and accurate alarm are achieved. False alarm of the system is reduced, loss is reduced to the maximum, and the application range is wide.
Description
Technical field
The utility model belongs to oil and gas pipes science and technology precautionary technology field, specifically, relates to a kind of oil and gas pipeline leakage detection system based on flow equilibrium and low-frequency wave technology.
Background technique
Oil and gas pipeline is because of reasons such as destruction, burn into tubing and construction qualities, can cause oil and gas pipeline leakage accident probability of happening to increase, so that pipe safety is subject to serious threat, for this reason, the leakage monitoring work of oil and gas pipes is just particularly important, installation has the leak detection system of real time monitoring function can in time find leakage accident, thus the cut loss of maximum possible.Up to the present, two kinds of technology that leak detection system is mainly used are pipeline balancing method and feature method of identification, wherein the equitable basic principle of the pipeline material mass that refers to flow out pipeline adds that pipe deposits the material mass that must equal to enter pipeline after the variation, and feature identification rule is judged leakage by the output abnormality of the contact between taking into account system pressure and/or the flow or identification pipeline sensor.Using more leak detection technology at present mainly is the feature method of identification, but there is larger narrow limitation in the single features method of identification, its required precision to instrument is higher, and can not detect small flow leaks, cause its Applicable scope narrower, the general leak detection that only is adapted to fluid pipeline, under present technical specifications, be difficult to satisfy the Leak testtion requirement of gas pipeline, in addition, the warning accuracy rate of single method is lower, and rate of false alarm is higher, thereby causes the popularization of single leak detection technology based on the feature method of identification to be very restricted.A kind of method of judging pipe leakage is disclosed at present, the main points of its technological scheme are at upstream detection point and detected downstream point the low-frequency wave sensor to be set respectively, according to the data analysis of sensor collection and judge whether pipeline leaks, its essential characteristic all is to record pipeline leakage signal between adjacent two stations by being installed in one on pipeline cover sensor, thereby judge and leak, but this method exists detection means too single, fails to report easily the problem of alert accident; The method and apparatus of a kind of fluid-transporting tubing Leak testtion location is also disclosed at present, be characterized in utilizing neuron network and mode identification technology that the conduit running situation is classified, and by wavelet transformation inhibition influence of noise and dynamic calibration flowmeter error, and the gentlenesses such as foundation is adapted to are the Hydro-thermodynamic collective model of isothermal pipeline not, intelligentized leakage to various pipelines detects voluntarily, but there is the too complicated problem of leak detection system in this apparatus and method, can face the operating mode of various complexity in the conduit running, the application of large quantity sensor also can reduce the reliability of system greatly, so that the application of this technology in engineering is very difficult; And as for other method, such as single flow equilibrium method, negative pressure wave method, set up the methods such as pipeline model, it has all run into the problem that can't overcome the background noise impact at present in application process, its antijamming capability is relatively poor, causes rate of false alarm higher, thereby causes actual application value less, for this reason, for the deficiency of above-mentioned technology, need a kind of have actual application value and reliable system, realize the leakage of oil and gas pipeline is detected.
The model utility content
The purpose of this utility model has been to propose a kind of oil and gas pipeline leakage detection system based on flow equilibrium and low-frequency wave technology, it is coupled pipeline balancing method and low-frequency wave technology, in conjunction with difference in flow pipe leakage is judged, thereby overcome the defective that the conventional art detection means is single and the warning accuracy rate is low, it has obtained breakthrough progress aspect the obtaining of antijamming capability and leakage signal.
The technological scheme that the utility model adopts is:
Oil and gas pipeline leakage detection system based on flow equilibrium and low-frequency wave technology, comprise pipeline, also comprise the mass flowmenter and the low-frequency wave sensor that are separately positioned on pipeline upstream extremity and downstream, the mass flowmenter of described pipeline upstream extremity and downstream is connected with the intelligent signal processing device respectively again with the low-frequency wave sensor, and described intelligent signal processing device is connected with computer system by network.
In the technical solution of the utility model, also have following additional technical feature:
The integrated morphology of described intelligent signal processing device for being formed by signal conditioner, data acquisition equipment and gps time signal collector.
Described computer system is provided with server and monitor terminal.
Described network using Local Area Network.
The utility model provides a kind of oil and gas pipeline leakage detection system based on flow equilibrium and low-frequency wave technology, it is by being coupled pipeline balancing method and low-frequency wave technology, in conjunction with difference in flow pipe leakage is judged, thereby overcome the defective that the conventional art detection means is single and the warning accuracy rate is low, it not only can be used in crude oil and processed oil pipeline, the Leak testtion that also can be used for gas pipeline, it is good to have an antijamming capability, and it is good that antinoise signal leaks ability, it is convenient to measure, precision is high, and information sharing is had complementary advantages, it is accurately reliable to report to the police, reduce misreport of system, cut loss to greatest extent, advantage applied widely.
Description of drawings
Fig. 1 is the oil and gas pipeline leakage detection system architecture schematic representation based on flow equilibrium and low-frequency wave technology of the present utility model.
Wherein, 1 is pipeline, and 2 is mass flowmenter, and 3 is the low-frequency wave sensor, and 4 are the intelligent signal processing device, and 5 is the gps time signal collector, and 6 is Local Area Network, and 7 is server, and 8 is monitor terminal.
Embodiment
Below in conjunction with specific embodiment the utility model is described in further detail,
Embodiment
As shown in Figure 1, oil and gas pipeline leakage detection system based on flow equilibrium and low-frequency wave technology, comprise pipeline 1, also comprise the mass flowmenter 2 and the low-frequency wave sensor 3 that are separately positioned on pipeline 1 upstream extremity and downstream, the mass flowmenter 2 of described pipeline 1 upstream extremity and downstream is connected with intelligent signal processing device 4 respectively again with low-frequency wave sensor 3, and described intelligent signal processing device 4 is connected with computer system by network; The integrated morphology of described intelligent signal processing device 4 for being formed by signal conditioner, data acquisition equipment and gps time signal collector 5; Described computer system is provided with server 7 and monitor terminal 8, described network using Local Area Network 6.
Like this when work, oil and gas pipeline leakage detection system based on flow equilibrium and low-frequency wave technology of the present utility model, when pipeline occurs to leak, the low-frequency wave signal that mass flowmenter 2 and low-frequency wave sensor 3 produce when collecting respectively flux signal and leakage, intelligent signal processing device 4 is integrated signal conditioner, data acquisition equipment and gps time signal collector 5, signal conditioner amplifies signal, after filtering and isolation etc. are processed, offer data acquisition equipment, the in-site modeling signal directly is converted to digital signal, add time tag, transfer data to computer system by intelligent signal processing device 4 by Internet Transmission, carry out data analysis by computer-processing software again, and on terminal the output alarm result; By the time difference at comparative analysis low-frequency wave arrival first and last station, calculate and can obtain the pipe leakage position, thus the location of realizing pipe leakage; Its principle by adopting flow equilibrium method and two kinds of detection techniques of low-frequency wave method to be coupled is utilized wavelet algorithm and Intelligent Neural Network technology, has realized pipe leakage point is accurately located; Use the high-performance collector in the hardware collection, the on-site supervision parameter is carried out the high frequency collection, realization is to pipeline flow and leak the isoparametric Real-time Collection of low-frequency wave that produces, and utilizes network that the monitoring parameter at oil transport pipeline two ends is transmitted back the intelligent signal processing device; Intelligent signal processing device 4 is used low-frequency wave method, flow equilibrium method and comprehensive neuron network INTELLIGENT IDENTIFICATION method on the one hand, the pipeline oil transportation state is monitored judge and identification, thereby realize leaking the location; With pipeline oil transportation parameter and normal oil transportation operating mode contrast, find oil transportation work condition abnormality state on the other hand, carry out in advance early warning, guarantee that pipe applications is at safe condition; So by adopting mass flowmenter to realize the collection of data on flows, variable quantity that so both can the Quick Acquisition instantaneous volume flow rate, the while can collect the mass flow rate data again; Instantaneous volume flow rate can be tackled the measurement shoutage that the pipeline transient for operating causes, a large amount of false alarm reduction rates; Data accumulation by mass flow rate can improve the sensitivity of leaking hunting, and reduces the possibility of failing to report.
Obviously, above-described embodiment of the present utility model only is for the utility model example clearly is described, and is not to be restriction to mode of execution of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here can't give all mode of executions exhaustive.Everyly belong to the row that apparent variation that the technical solution of the utility model extends out or change still are in protection domain of the present utility model.
Claims (4)
1. based on the oil and gas pipeline leakage detection system of flow equilibrium and low-frequency wave technology, comprise pipeline (1), it is characterized in that: also comprise the mass flowmenter (2) and the low-frequency wave sensor (3) that are separately positioned on pipeline (1) upstream extremity and downstream, the mass flowmenter (2) of described pipeline (1) upstream extremity and downstream is connected with intelligent signal processing device (4) respectively again with low-frequency wave sensor (3), and described intelligent signal processing device (4) is connected with computer system by network.
2. the oil and gas pipeline leakage detection system based on flow equilibrium and low-frequency wave technology as claimed in claim 1 is characterized in that: the integrated morphology of described intelligent signal processing device (4) for being comprised of signal conditioner, data acquisition equipment and gps time signal collector (5).
3. the oil and gas pipeline leakage detection system based on flow equilibrium and low-frequency wave technology as claimed in claim 2, it is characterized in that: described computer system is provided with server (7) and monitor terminal (8).
4. the oil and gas pipeline leakage detection system based on flow equilibrium and low-frequency wave technology as claimed in claim 3 is characterized in that: described network using Local Area Network (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220538227 CN202852430U (en) | 2012-10-19 | 2012-10-19 | Oil and gas pipeline leak detection system based on flow equilibrium and low frequency wave technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220538227 CN202852430U (en) | 2012-10-19 | 2012-10-19 | Oil and gas pipeline leak detection system based on flow equilibrium and low frequency wave technology |
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| CN202852430U true CN202852430U (en) | 2013-04-03 |
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| CN 201220538227 Expired - Lifetime CN202852430U (en) | 2012-10-19 | 2012-10-19 | Oil and gas pipeline leak detection system based on flow equilibrium and low frequency wave technology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443990A (en) * | 2014-09-26 | 2016-03-30 | 武汉光谷北斗地球空间信息产业股份有限公司 | Intelligent ball pipeline monitoring system based on Beidou positioning system |
| CN108506732A (en) * | 2018-04-25 | 2018-09-07 | 江苏太平橡胶股份有限公司 | Oil pipeline anti-leak monitors system |
-
2012
- 2012-10-19 CN CN 201220538227 patent/CN202852430U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443990A (en) * | 2014-09-26 | 2016-03-30 | 武汉光谷北斗地球空间信息产业股份有限公司 | Intelligent ball pipeline monitoring system based on Beidou positioning system |
| CN108506732A (en) * | 2018-04-25 | 2018-09-07 | 江苏太平橡胶股份有限公司 | Oil pipeline anti-leak monitors system |
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Granted publication date: 20130403 |
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| CX01 | Expiry of patent term |