CN113029055A - Explosion-proof anti-interference pipeline wall thickness ultrasonic online monitoring device - Google Patents
Explosion-proof anti-interference pipeline wall thickness ultrasonic online monitoring device Download PDFInfo
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- CN113029055A CN113029055A CN202110227955.0A CN202110227955A CN113029055A CN 113029055 A CN113029055 A CN 113029055A CN 202110227955 A CN202110227955 A CN 202110227955A CN 113029055 A CN113029055 A CN 113029055A
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 22
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
- G01B17/02—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness
Abstract
The invention provides an explosion-proof anti-interference pipeline wall thickness ultrasonic online monitoring device, and belongs to the field of online monitoring of petroleum and natural gas pipelines. The device comprises a probe device, an explosion-proof cable, a voltage-regulating power box, a communication cable, a terminal computer and other equipment; the device installs probe and collection integrated circuit board together in the probe device, has realized the function of the real-time collection of wall thickness data, echo signal's conversion and airspace filtering, with the help of the ability that digital signal resisted material itself and external clutter interference, realizes detecting the location of position echo signal according to the probe that is equidistant linear array and arranges again, has embodied the anti environmental noise interference ability of device, simultaneously because the structure is retrencied, low pressure operation and circuit explosion-proof make the device have the blast proof ability under high temperature high pressure environment. The invention makes up the explosion-proof defect in the oil-gas pipeline wall thickness ultrasonic online monitoring device and the adverse effect caused by environmental noise, and has the advantages of simple and convenient operation, high safety, interference resistance and the like.
Description
Technical Field
The invention discloses an explosion-proof anti-interference pipeline wall thickness ultrasonic online monitoring device, and relates to the field of online monitoring of petroleum and natural gas pipelines.
Background
With the increasing perfection of oil and gas pipe networks in China, the total mileage of long-distance pipelines in China reaches 13.6 kilometers by 2018, a large number of pipelines are buried underground or on the seabed deeply and are in a high-temperature and high-pressure environment during operation, most media conveyed by the pipelines have corrosion capability and are eroded by conveyed fluid or impurities, and the wall thickness of the pipelines is inevitably reduced during the operation process due to the factors, so that accidents of the oil and gas conveying pipelines frequently occur, typically, such as natural gas pipeline explosion accidents in Luzhou city in 2004, oil pipeline explosion accidents in Qingdao city in 2013 and the like. The 'oil and gas pipeline protection law' is promulgated in 2010 in China, the plain text states that pipeline enterprises should regularly detect and maintain pipelines to ensure that the pipelines are in a good state, and advanced and applicable pipeline protection technologies are researched, developed and used when necessary personnel and technical equipment for pipeline protection are equipped, but the development of China now enters a new era, the requirements of economic high-quality development are met, the national requirements for safe operation of pipeline transportation of oil and gas are higher and higher, so that the wall thickness data of the oil and gas pipelines need to be accurately acquired and timely monitored, and the method is very important for protecting the safety of pipeline operation. However, when monitoring the oil and gas pipelines in the above complex environments, a large amount of clutter generated in the environments can generate large interference on signal acquisition and transmission, and meanwhile, monitoring equipment of the pipelines in these environments also needs to have high explosion-proof capability to ensure safety. Based on this, a set of ultrasonic monitoring device capable of effectively reducing clutter interference and having on-line acquisition and explosion-proof capabilities is needed.
Through search, in the disclosed ultrasonic monitoring device for the wall thickness of the pipeline, some monitoring devices have realized on-line acquisition of wall thickness information (publication number: CN102980538A, publication number: CN104677317A), but the device does not have the explosion-proof performance, because the device can generate the particularity of the electric signal, the accidents such as firing and explosion are easy to be caused, therefore, the device can not safely operate in the environment with high explosion-proof requirements like an offshore oil and gas platform, the monitoring device (publication number: CN211425370U) with the explosion-proof function does not have an ultrasonic signal cable with the explosion-proof function at the joint of the ultrasonic probe and the explosion-proof box, uses a threaded pipe and is provided with a collecting box on the monitoring site, therefore, the explosion-proof performance is deficient, the anti-noise interference capability of the anti-noise device under a complex environment is insufficient, and the collected and analyzed wall thickness data may not be accurate enough. This set of device uses probe unit and collection system as the innovation point, with gathering the integrated inside probe unit of integrated board, can directly link to each other probe unit and power supply box like this, the collection flow of signal has been simplified, and can adopt the data line to seal the in-connection of explosion-proof threading pipe between probe unit and the power supply box this moment and further improved explosion-proof performance, and when realizing on-line collection processing pipe wall thickness data, possess the ability that in time converts digital signal reinforcing anti-clutter interference, the ultrasonic transducer who adopts equidistant linear array to arrange can carry out airspace filtering and resist environmental noise, the on-line monitoring of pipeline wall thickness under the great and high explosion-proof requirement environment of clutter interference has been realized.
Disclosure of Invention
The invention aims to provide an explosion-proof anti-interference pipeline wall thickness ultrasonic online monitoring device which can be used for carrying out real-time data acquisition and analysis on pipelines in high-temperature and high-pressure high-explosion-proof requirements and has the capacity of resisting clutter interference in complex environments. The device comprises a first probe device 1, a second probe device 2, a third probe device 3, a first explosion-proof cable 4, a second explosion-proof cable 5, a third explosion-proof cable 6, a voltage-regulating power box 7, a communication cable 8 and a terminal computer 9; the monitoring device comprises a first probe device 1, a second probe device 2 and a third probe device 3, wherein the first probe device 1, the second probe device 2 and the third probe device 3 are respectively connected with a first explosion-proof cable 4, a second explosion-proof cable 5 and a third explosion-proof cable 6, an acquisition processing system is formed in an explosion-proof area of the monitoring device, pipeline wall thickness data under complex environments of high temperature, high pressure and the like are acquired and processed in time, a voltage regulating power box 7 forms a non-explosion-proof area power supply system, 220V voltage of a power supply is reduced to 12V low voltage to supply power to the monitoring device, a communication cable 8 connects an acquisition processing part with a human-computer interaction system formed by a terminal computer 9, and real.
The invention is realized by the following technical scheme:
(1) the FPGA chip is used as a core, a single-channel small-sized acquisition board card is designed, and the acquisition board card is provided with an excitation circuit, an amplification circuit, a filter circuit, a detection circuit and an A/D conversion circuit, the acquisition board card and a probe are connected and installed in a clamping device to form a first probe device 1, other probe devices are formed by the same principle to realize real-time acquisition and processing of wall thickness data, the excitation circuit sends a high-frequency pulse signal to a piezoelectric transducer of the probe during operation, the transducer sends ultrasonic waves, after a return wave is detected, the amplification circuit amplifies an electric signal, the filter circuit and the detection circuit filter out clutter and extract useful analog signals, and the A/D conversion circuit converts the signal into a digital signal and transmits the digital signal out of the probe device. The analog signal is easily interfered by clutter signals in long-distance transmission, while the digital signal has stronger capability of resisting the interference of materials and the outside, can correct errors generated in the transmission process through various modulation and demodulation technologies, does not have noise accumulation in the transmission process, and is convenient for the processing, exchange and storage of a subsequent terminal computer because the form of the digital signal is consistent with that of a digital communication signal, so that the probe device 1 realizes the anti-interference capability of the monitoring device. (2) The first probe device 1, the second probe device 2, the third probe device 3 and the voltage regulating power box 7 are respectively connected through the first explosion-proof cable 4, the second explosion-proof cable 5 and the third explosion-proof cable 6, so that an explosion-proof area acquisition processing system arranged on a monitoring site is formed, the system structure of the device is simplified, the situation that a signal acquisition box is arranged in a non-explosion-proof area of the monitoring device is avoided, the wall thickness information is acquired and processed in real time in the explosion-proof area through the probe device, the explosion-proof performance of the monitoring device is improved, meanwhile, the voltage regulating power box 7 can reduce the conventional voltage 220V to 12V low voltage for use, and the safety of a device circuit is further improved.
(3) Because the system is provided with a plurality of probe devices which are arranged in an equidistant linear array 11, echo signals can firstly reach the probe device close to each other and then reach the second probe device after a period of time, delay effect can be formed due to different time of exciting transducers in different probe devices by the echo signals, and azimuth angles 13 of the echo signals transmitted to the probe devices are directly related to delay time, so the device can be adjusted to accurately position according to different excited delay time of different probe devices, only the echo signals transmitted from monitoring points 12 on the inner wall of the pipe wall to be monitored are received, and therefore airspace filtering is carried out to resist interference caused by sand grains in wind impacting the pipe wall, operation of workers and electromagnetic waves in atmosphere.
(4) And a terminal computer 9 is connected with the voltage regulating power box 7 through a communication cable 8 and is used for processing, analyzing and man-machine interaction of signal data transmitted by the probe device, so that the wall thickness of the pipeline in the environment with high explosion-proof requirements is monitored in real time.
Drawings
Fig. 1 is a schematic structural diagram of an explosion-proof anti-interference pipeline wall thickness ultrasonic online monitoring device of the invention.
In the figure: the device comprises a first probe device 1, a second probe device 2, a third probe device 3, a first explosion-proof cable 4, a second explosion-proof cable 5, a third explosion-proof cable 6, a voltage-regulating power supply box 7, a communication cable 8, a terminal computer 9 and a pipeline 10.
Fig. 2 is a block diagram of a process for acquiring and processing signals by an explosion-proof and anti-interference probe device according to the present invention.
Figure 3 is an isometric linear array drawing of the probe apparatus of the present invention.
In the figure: 11 equidistant linear arrays, 12 monitoring points, 13 echo signal azimuth angles, 14 channels.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described below with reference to the accompanying drawings in the embodiments. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
The device comprises an acquisition processing system, a power supply system and a human-computer interaction system, wherein the acquisition system mainly comprises a clamp holder, a piezoelectric transducer and an acquisition board card in a probe device and is used for generating ultrasonic pulse signals, acquiring echo signals and processing the echo signals by utilizing timely conversion and spatial filtering; the power supply system is a voltage-regulating power supply box and is used for supplying power to the device after the voltage of a common 220V power supply is reduced; the human-computer interaction system is an upper computer and corresponding software and is used for analyzing and displaying wall thickness monitoring data. The acquisition processing system is connected with the power supply system through an explosion-proof cable, and the power supply system is connected with the interpersonal interaction system through a communication cable.
As shown in fig. 1 and 3, the specific embodiment is as follows:
step 6, turning on the power supplies of the voltage regulating power supply box 7 and the terminal computer 9;
step 8, initializing numerical values, and then carrying out online acquisition on the wall thickness data of the pipeline;
step 9, the terminal computer 9 processes, analyzes, displays and stores the data;
and step 10, collecting wall thickness data of the next period.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (3)
1. An explosion-proof anti-interference pipeline wall thickness ultrasonic online monitoring device comprises a first probe device (1), a second probe device (2), a third probe device (3), a first explosion-proof cable (4), a second explosion-proof cable (5), a third explosion-proof cable (6), a voltage-regulating power box (7), a communication cable (8) and a terminal computer (9); the explosion-proof area acquisition system is characterized in that an explosion-proof area acquisition system is composed of a first probe device (1), a second probe device (2), a third probe device (3), a first explosion-proof cable (4), a second explosion-proof cable (5) and a third explosion-proof cable (6); the voltage-regulating power box (7) forms a non-explosion-proof area power system; the communication cable (8) and the terminal computer (9) form a man-machine interaction system; the terminal computer (9) is connected with the voltage regulating power supply box (7) through a communication cable (8), 220V current is input into the voltage regulating power supply box (7), and low-voltage current is output for the device to use; the first probe device (1), the second probe device (2), the third probe device (3) and the voltage-regulating power box (7) are connected through a first explosion-proof cable (4), a second explosion-proof cable (5) and a third explosion-proof cable (6) respectively, and the defect that the explosion-proof capacity of the existing pipeline online monitoring device is insufficient is overcome by avoiding arranging a signal acquisition box in a non-explosion-proof interval of a monitoring field.
2. The ultrasonic online monitoring device for the wall thickness of the explosion-proof and anti-interference pipeline according to claim 1 is characterized in that the probe parts of the first probe device (1), the second probe device (2) and the third probe device (3) are characterized in that a piezoelectric sensor and a collecting board card are simultaneously installed in the probe devices, the piezoelectric transducer obtains echo signals and inputs the echo signals into the collecting board card for amplification, filtering and conversion, and the processed digital signals can avoid clutter interference in the subsequent transmission process and are output through the first explosion-proof cable (4), the second explosion-proof cable (5) and the third explosion-proof cable (6) respectively.
3. The ultrasonic online monitoring device for the wall thickness of the explosion-proof and anti-interference pipeline according to claim 1, wherein the first probe device (1), the second probe device (2) and the third probe device (3) form an equidistant linear array (11) when being installed on the outer wall of the pipeline, the positioning of a monitoring point (12) is adjusted according to the excitation delay time caused by the azimuth angle (13) of the echo signal received by the probe devices, only the ultrasonic echo signal of the position to be monitored is received to perform spatial filtering, the noise interference in the environment is avoided, and the anti-interference capability of the online monitoring device is further enhanced.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110227955.0A CN113029055A (en) | 2021-03-02 | 2021-03-02 | Explosion-proof anti-interference pipeline wall thickness ultrasonic online monitoring device |
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| CN202110227955.0A CN113029055A (en) | 2021-03-02 | 2021-03-02 | Explosion-proof anti-interference pipeline wall thickness ultrasonic online monitoring device |
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| CN113029055A true CN113029055A (en) | 2021-06-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116299485A (en) * | 2023-05-16 | 2023-06-23 | 航天极创物联网研究院(南京)有限公司 | Ultrasonic sensor with high structural integration level |
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2021
- 2021-03-02 CN CN202110227955.0A patent/CN113029055A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116299485A (en) * | 2023-05-16 | 2023-06-23 | 航天极创物联网研究院(南京)有限公司 | Ultrasonic sensor with high structural integration level |
| CN116299485B (en) * | 2023-05-16 | 2023-12-26 | 航天极创物联网研究院(南京)有限公司 | Ultrasonic sensor with high structural integration level |
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