CN104832791B - Oil leakage detection monitoring device and method for oil pipeline - Google Patents
Oil leakage detection monitoring device and method for oil pipeline Download PDFInfo
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- CN104832791B CN104832791B CN201510166892.7A CN201510166892A CN104832791B CN 104832791 B CN104832791 B CN 104832791B CN 201510166892 A CN201510166892 A CN 201510166892A CN 104832791 B CN104832791 B CN 104832791B
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Abstract
The invention discloses an oil leakage detection monitoring device and method for an oil pipeline, which utilize the phenomenon that the liquid pressure at the leakage and blockage part in the oil pipeline changes, put a metal detection ball in the pipeline, position the abnormal position in the pipeline according to the change of differential pressure, remotely transmit pressure signals in real time, and realize the space positioning of the abnormal pipeline by analyzing the signals. The leakage detection system for real-time test monitoring has the advantages that the data acquisition is effective, the probability of finding a leakage position can be effectively improved, and the accuracy of leakage detection positioning of a leakage point is enhanced; the appearance of the invention is changed, the degree of the easy blockage and outage problems of the original metal detection ball is reduced, and meanwhile, the pressure sensor is protected from being damaged due to collision with the pipe wall, so that the cost is greatly reduced; the method comprises the steps of throwing balls at equal time intervals, increasing intersection and coverage of running monitoring of different balls, obtaining a plurality of comprehensive pressure trajectory curves, and improving accuracy of judgment of abnormal areas.
Description
The technical field is as follows:
the invention relates to an oil leakage detection monitoring device and method for an oil pipeline, and belongs to the field of safe fluid transportation.
Background art:
the pipeline can take place local fracture thereby arouses to reveal in the transportation of long line oil pipeline, brings very big potential safety hazard even economic loss for production. At present, the judgment of the position of a leakage point of a long-line oil pipeline in an oil field is mainly realized by adopting the combination of a negative pressure wave method and an optical fiber method, so that the real-time monitoring is preliminarily realized, but the use cost is high, the positioning accuracy is poor, and the technical implementation is not perfect. Especially for old pipelines, the equipment investment is huge, unnecessary economic burden is caused, and the popularization and the application of the technology are not facilitated.
The invention forms a set of real-time test and data transmission leakage detection method and monitoring system by improving the original metal detection ball leakage detection method technology and utilizing the fluid pressure monitoring ball, and can further improve the positioning accuracy and the timeliness of data transmission judgment without changing the original pipeline.
The invention content is as follows:
the invention relates to a method and a device for positioning abnormal pipelines by utilizing the phenomenon that the liquid pressure at the leakage and blockage positions in an oil pipeline changes, putting a metal detection ball in the pipeline, positioning the abnormal position in the pipeline according to the change of differential pressure, remotely transmitting pressure signals in real time and analyzing the signals.
Aiming at the problem of pipeline abnormity to be solved, the invention adopts the following scheme:
the utility model provides an oil pipeline oil leak detection monitoring devices which characterized in that: the device comprises a metal detection ball and a base station, wherein the metal detection ball is in a convex-concave shape, a rubber layer is arranged on the outer wall of the metal detection ball, and a tail wing is arranged on one side of the rubber layer of the metal detection ball; the metal detection ball is internally provided with a main controller, and a fluid pressure automatic detection sensing system, a GPS space positioning system, a data signal wireless transmission system, a temperature sensor, an inertia guidance system, a high-precision clock and a power supply battery which are connected with the main controller, wherein the pressure automatic detection sensing system comprises two groups of differential pressure sensors which are distributed on the inner surface of the ball body of the metal detection ball, and pressure taking ports of the two groups of differential pressure sensors are respectively positioned at the front and back and the up and down symmetrical positions of the ball body to directly monitor the fluid pressure; the GPS space positioning system can track and position the position of the sphere and provide corresponding position information; the data signal wireless transmission system communicates with the base station in a 4G wireless transmission mode, transmits point measurement information in real time and provides a basis for data analysis; the temperature sensor tests the fluid temperature parameters of each measuring point; the inertial guidance system is started when metal shielding exists, and attitude position parameters of the metal detection ball are automatically recorded.
An oil leakage detection method for an oil pipeline is characterized by comprising the following steps:
(1) putting metal detection balls into the pipe at equal time intervals according to the long-line oil pipeline timing ball throwing device, and carrying out field data acquisition on the metal detection balls;
(2) monitoring the pressure in the pipeline liquid in real time through a differential pressure sensor in the sphere, and drawing a pressure curve; tracking the running position of the metal detection ball in real time through a GPS space positioning system to obtain the accurate coordinates of each pressure test point, wherein the formed pressure curve is the pressure value track of the space coordinates of different test points; the data of the test points are wirelessly transmitted through a data signal wireless transmission system, and the monitoring center base station can obtain the pressure and the track value of the ball thrown in the pipeline at different time in real time;
(3) according to the comprehensive analysis of parameters such as the set putting time and flow velocity of the metal detection ball, a monitoring curve of the pressure of the whole long-line pipeline is formed, the curve is subjected to superposition processing after time correction is carried out, the inflection point area of the pressure curve is a suspected leakage point, and the leakage position is determined through the comprehensive analysis of curve superposition of an inflection point frequency domain;
(4) evaluating the abnormal characteristics of the pressure curve: collecting data through a differential pressure sensor, processing the collected data by using a numerical fitting modeling method to obtain an uncontrollable influence, blockage and leakage abnormity distribution map in an oil pipeline, performing three-dimensional spatial expression on a liquid pressure value in a monitoring pipeline by combining spatial coordinates of a test point, and further setting a pressure abnormity standard to perform pipeline detection interpretation and forecast; the specific analysis process comprises the following steps: 1) the method comprises the following steps of sorting the change curves of parameters such as the pressure of the whole space of the pipeline, and the like, wherein the obtained data are as follows: x, y, z, P, T and T, wherein x, y and z are space coordinates of a sphere of the metal detection ball, P is pressure difference data, T is fluid temperature data, and T is a recording time parameter; 2) according to a normal pipeline test result, correcting influence factors such as a spatial position, a terrain altitude difference, a burial depth, a bend, a small ball material, signal shielding and the like to obtain a pure abnormal pressure curve in a pipeline liquid movement process; 3) and determining an oil leakage abnormity judgment standard by combining the space position of the actual oil pipeline and the characteristics of rock soil, extracting main abnormity and performing fine explanation, wherein the main abnormity is leakage and blockage, and evaluating the abnormal characteristics in the pipeline.
The invention has the advantages that:
1. the leakage detection system for real-time test monitoring has the advantages that the data acquisition is effective, the discovery probability of a leakage part can be effectively improved, and the leakage detection positioning precision of a leakage point is enhanced.
2. The change of the appearance of the invention reduces the degree of the blockage and outage problems which easily occur in the original metal detection ball, simultaneously protects the pressure sensor from being damaged due to collision with the pipe wall, and greatly reduces the cost.
3. The method comprises the steps of throwing balls at equal time intervals, increasing intersection and coverage of running monitoring of different balls, obtaining a plurality of comprehensive pressure trajectory curves, and improving accuracy of judgment of abnormal areas.
Description of the drawings:
FIG. 1 is a schematic view of an oil pipeline oil leakage detection monitoring device system of the present invention.
Fig. 2 is a schematic diagram of a control system inside a metal detection ball.
The specific implementation mode is as follows:
as shown in fig. 1, the oil leakage detection monitoring device for the oil pipeline comprises a metal detection ball 1 and a base station 2, wherein the metal detection ball 1 is in a convex-concave shape, a rubber layer is arranged on the outer wall of the metal detection ball 1, and a tail wing is arranged on one side of the rubber layer of the metal detection ball; the metal detection ball 1 is internally provided with a main controller 1.1, a fluid pressure automatic detection sensing system 1.2 connected with the main controller 1.1, a GPS space positioning system 1.3, a data signal wireless transmission system 1.4, a temperature sensor 1.5, an inertia guidance system 1.6, a high-precision clock 1.7 and a power supply battery 1.8, wherein the pressure automatic detection sensing system 1.2 comprises two groups of differential pressure sensors which are distributed on the inner surface of the ball body of the metal detection ball 1, and pressure taking ports of the two groups of differential pressure sensors are respectively positioned at the front and back and the up and down symmetrical positions of the ball body to directly monitor the fluid pressure; the GPS space positioning system 1.3 can track and position the position of the sphere and provide corresponding position information; the data signal wireless transmission system 1.4 carries out satellite communication with the base station 2 by utilizing a 4G wireless transmission mode, transmits point measurement information in real time and provides a basis for data analysis; the temperature sensor 1.5 tests the fluid temperature parameter of each measuring point; the inertial guidance system 1.6 is started when the metal shielding exists, and the attitude position parameters of the metal detection ball are automatically recorded.
An oil leakage detection method for an oil pipeline comprises the following steps:
(1) putting metal detection balls into the pipe at equal time intervals according to the long-line oil pipeline timing ball throwing device, and carrying out field data acquisition on the metal detection balls;
(2) monitoring the pressure in the pipeline liquid in real time through a differential pressure sensor in the sphere, and drawing a pressure curve; tracking the running position of the metal detection ball in real time through a GPS space positioning system to obtain the accurate coordinates of each pressure test point, wherein the formed pressure curve is the pressure value track of the space coordinates of different test points; the data of the test points are wirelessly transmitted through a data signal wireless transmission system, and the monitoring center base station can obtain the pressure and the track value of the ball thrown in the pipeline at different time in real time;
(3) according to the comprehensive analysis of parameters such as the set putting time and flow velocity of the metal detection ball, a monitoring curve of the pressure of the whole long-line pipeline is formed, the curve is subjected to superposition processing after time correction is carried out, the inflection point area of the pressure curve is a suspected leakage point, and the leakage position is determined through the comprehensive analysis of curve superposition of an inflection point frequency domain;
(4) evaluating the abnormal characteristics of the pressure curve: collecting data through a differential pressure sensor, processing the collected data by using a numerical fitting modeling method to obtain an uncontrollable influence, blockage and leakage abnormity distribution map in an oil pipeline, performing three-dimensional spatial expression on a liquid pressure value in a monitoring pipeline by combining spatial coordinates of a test point, and further setting a pressure abnormity standard to perform pipeline detection interpretation and forecast; the specific analysis process comprises the following steps: 1) the method comprises the following steps of sorting the change curves of parameters such as the pressure of the whole space of the pipeline, and the like, wherein the obtained data are as follows: x, y, z, P, T and T, wherein x, y and z are space coordinates of a sphere of the metal detection ball, P is pressure difference data, T is fluid temperature data, and T is a recording time parameter; 2) according to a normal pipeline test result, correcting influence factors such as a spatial position, a terrain altitude difference, a burial depth, a bend, a small ball material, signal shielding and the like to obtain a pure abnormal pressure curve in a pipeline liquid movement process; 3) and determining an oil leakage abnormity judgment standard by combining the space position of the actual oil pipeline and the characteristics of rock soil, extracting main abnormity and performing fine explanation, wherein the main abnormity is leakage and blockage, and evaluating the abnormal characteristics in the pipeline.
Claims (1)
1. A detection method of an oil leakage detection and monitoring device of an oil pipeline is characterized in that: the oil leakage detection monitoring device for the oil conveying pipeline comprises a metal detection ball and a base station, wherein the metal detection ball is in a convex-concave shape, a rubber layer is arranged on the outer wall of the metal detection ball, and a tail wing is arranged on one side of the rubber layer of the metal detection ball; the metal detection ball is internally provided with a main controller, and a fluid pressure automatic detection sensing system, a GPS space positioning system, a data signal wireless transmission system, a temperature sensor, an inertia guidance system, a high-precision clock and a power supply battery which are connected with the main controller, wherein the pressure automatic detection sensing system comprises two groups of differential pressure sensors which are distributed on the inner surface of the ball body of the metal detection ball, and pressure taking ports of the two groups of differential pressure sensors are respectively positioned at the front and back and the up and down symmetrical positions of the ball body; the GPS space positioning system tracks and positions the position of the sphere and provides corresponding position information; the data signal wireless transmission system communicates with the base station in a 4G wireless transmission mode; the temperature sensor tests the fluid temperature parameters of each measuring point; the inertial guidance system is started when metal shielding exists, and attitude position parameters of the metal detection ball are automatically recorded;
the oil leakage detection method for the oil pipeline comprises the following steps:
(1) putting metal detection balls into the pipe at equal time intervals according to the long-line oil pipeline timing ball throwing device, and carrying out field data acquisition on the metal detection balls;
(2) monitoring the pressure in the pipeline liquid in real time through a differential pressure sensor in the sphere, and drawing a pressure curve; tracking the running position of the metal detection ball in real time through a GPS space positioning system to obtain the accurate coordinates of each pressure test point, wherein the formed pressure curve is the pressure value track of the space coordinates of different test points; the data of the test points are wirelessly transmitted through a data signal wireless transmission system, and the monitoring center base station can obtain the pressure and the track value of the ball thrown in the pipeline at different time in real time;
(3) according to the comprehensive analysis of the set putting time and flow speed parameters of the metal detection ball, forming a monitoring curve of the pressure of the whole long-line pipeline, carrying out time correction on the curve, carrying out superposition processing on the curve, wherein a pressure curve inflection point area is a suspected leakage point, and determining the leakage position through comprehensive analysis of curve superposition of an inflection point frequency domain;
(4) evaluating the abnormal characteristics of the pressure curve: collecting data through a differential pressure sensor, processing the collected data by using a numerical fitting modeling method to obtain an uncontrollable influence, blockage and leakage abnormity distribution map in an oil pipeline, performing three-dimensional spatial expression on a liquid pressure value in a monitoring pipeline by combining spatial coordinates of a test point, and further setting a pressure abnormity standard to perform pipeline detection interpretation and forecast; the specific analysis process comprises the following steps: 1) the change curve of the pipeline total space pressure parameter is arranged, and the obtained data is as follows: x, y, z, P, T and T, wherein x, y and z are space coordinates of a sphere of the metal detection ball, P is pressure difference data, T is fluid temperature data, and T is a recording time parameter; 2) correcting signal shielding influence factors of spatial position, terrain altitude difference, burial depth, bend and small ball materials according to a normal pipeline test result to obtain a pure abnormal pressure curve in the pipeline liquid movement process; 3) and determining an oil leakage abnormity judgment standard by combining the space position of the actual oil pipeline and the characteristics of rock soil, extracting main abnormity and performing fine explanation, wherein the main abnormity is leakage and blockage, and evaluating the abnormal characteristics in the pipeline.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106322126A (en) * | 2016-11-17 | 2017-01-11 | 西华大学 | Liquid pipeline transportation chained floating ball leakage detection system |
| CN106641737A (en) * | 2016-12-20 | 2017-05-10 | 重庆国际复合材料有限公司 | Heat exchange tube system and pressure maintaining and testing device and method of shell-and-tube heat exchanger |
| CN107817075A (en) * | 2017-09-30 | 2018-03-20 | 上海邦芯物联网科技有限公司 | A kind of GPS tracing systems for pipeline leak detection |
| CN109140236B (en) * | 2018-09-13 | 2021-01-01 | 上海万朗水务科技集团有限公司 | Management and management network control system based on intelligent pipeline |
| CN109185713B (en) * | 2018-10-16 | 2024-03-26 | 湖南普奇地质勘探设备研究院（普通合伙) | Pressure pipeline leakage point detection positioning device and method |
| CN109723976B (en) * | 2019-02-26 | 2021-10-08 | 中国神华能源股份有限公司 | Pipeline blockage position detection device |
| CN111347427B (en) * | 2020-03-27 | 2022-07-08 | 国电南瑞科技股份有限公司 | Method and system for restraining operation vibration of photovoltaic power station operation and maintenance robot and storage medium |
| CN113653949B (en) * | 2021-09-23 | 2023-01-31 | 西南石油大学 | Parameter identification method for preventing valve chamber from being mistakenly shut off when oil pipeline stops delivering oil |
| CN113836680B (en) * | 2021-11-25 | 2022-03-08 | 德仕能源科技集团股份有限公司 | Automatic filling method and technology for petroleum oil pipe |
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| CN103090193A (en) * | 2013-01-08 | 2013-05-08 | 浙江大学 | Device and method for detection and location of submarine oil pipeline leakage |
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| US4280356A (en) * | 1979-07-13 | 1981-07-28 | Shell Oil Company | Pipeline leak detection |
| CN201476933U (en) * | 2009-08-24 | 2010-05-19 | 赵国忠 | Low-power-consumption pipe pressure data recorder |
| CN103926036B (en) * | 2014-05-08 | 2017-11-28 | 中国石油大学(华东) | A kind of portable pressure acquisition ball based on Bluetooth data transfer |
| CN104180166B (en) * | 2014-07-09 | 2017-08-15 | 中国石油大学(华东) | A kind of pipeline leakage detection method based on pipeline pressure data |
| CN204756459U (en) * | 2015-04-09 | 2015-11-11 | 安徽理工大学 | Oil pipeline oil leak detects monitoring devices |
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| CN103090193A (en) * | 2013-01-08 | 2013-05-08 | 浙江大学 | Device and method for detection and location of submarine oil pipeline leakage |
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