CN213091553U - Pipeline magnetic leakage detection equipment - Google Patents
Pipeline magnetic leakage detection equipment Download PDFInfo
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- CN213091553U CN213091553U CN202022308800.3U CN202022308800U CN213091553U CN 213091553 U CN213091553 U CN 213091553U CN 202022308800 U CN202022308800 U CN 202022308800U CN 213091553 U CN213091553 U CN 213091553U
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Abstract
The utility model discloses a pipeline magnetic leakage detection equipment. Pipeline magnetic leakage check out test set includes: a power supply unit; the data acquisition unit is connected with the power supply unit and at least comprises a plurality of signal acquisition sub-boards; and the main control unit is connected with the power supply unit and the data acquisition unit, and the signal acquisition sub-boards are connected in parallel to the main control unit through an Ethernet field bus. This pipeline magnetic leakage check out test set structure is succinct, can realize the high-speed real-time transmission of the collection signal of single net line and handle to, can effectively reduce internode cable and main cylinder body cable and perforate, strengthen the mechanical protection intensity of main cylinder body and increase the connection stability of the device of each unit.
Description
Technical Field
The utility model relates to an oil gas pipeline detects technical field, particularly, relates to a pipeline magnetic leakage detection equipment.
Background
At present, various nondestructive testing methods for pipelines have been proposed at home and abroad, for example: magnetic flux leakage detection, electromagnetic ultrasonic detection, eddy current detection and the like. The magnetic leakage detection probe adopted in the magnetic leakage detection has the advantages of corrosion resistance and suitability for severe environments such as high pressure, humidity, liquid condition, high-pressure gas and the like.
However, the leakage flux detection of the oil and gas pipeline is a world problem, and the design difficulties of complex defects, difficult defect mode identification, difficult accuracy achievement and the like exist under complex working conditions. In the process of three-dimensional defect magnetic flux leakage detection of pipeline defects, bottlenecks such as a large number of sensors, limited signal acquisition and transmission capacity and limited speed exist. How to select a simple and reliable signal acquisition method in numerous signal transmissions will directly determine the measurement accuracy and reliability of the magnetic flux leakage detection device.
The past magnetic flux leakage detection equipment mostly adopts MCU design and low speed such as lumped direct connection of a CAN bus or an FPGA, and the problems of high software switching overhead, low speed, low precision, more cables, easy damage of a system and the like exist.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model aims at providing a pipeline leaks magnetism check out test set. This pipeline magnetic leakage check out test set structure is succinct, can realize the high-speed real-time transmission of the collection signal of single net line and handle to, can effectively reduce internode cable and main cylinder body cable and perforate, strengthen the mechanical protection intensity of main cylinder body and increase the connection stability of the device of each unit.
According to an aspect of the present disclosure, there is provided a pipe leakage detecting apparatus including: a power supply unit; the system comprises a plurality of signal acquisition probe arm data acquisition modules and corresponding sub circuit boards; a main control unit; and the excitation module is connected with the power supply unit and the data acquisition unit, and the signal acquisition sub-boards are connected in series to the main control unit through a field Ethernet bus.
In the pipe leakage detecting apparatus according to an aspect of the present disclosure, each of the signal collecting sub-boards includes a field programmable gate array circuit, an analog-digital converter, and a probe sensor.
In the pipe leakage detecting apparatus according to an aspect of the present disclosure, the field programmable gate array circuit board, the analog-to-digital converter, and the probe sensor are integrally packaged.
In the pipe leakage detecting apparatus according to an aspect of the present disclosure, the main control unit further includes a gyroscope.
In the pipe leakage detecting apparatus according to an aspect of the present disclosure, the main control unit further includes a rotary encoder.
In the pipe leakage detecting apparatus according to an aspect of the present disclosure, the main control unit further includes an accelerometer.
In the pipe leakage detecting apparatus according to an aspect of the present disclosure, the main control unit further includes a storage unit.
In the pipe leakage detecting apparatus according to an aspect of the present disclosure, the data collecting unit further includes a plurality of odometer wheel sensors.
In the pipe leakage detecting apparatus according to an aspect of the present disclosure, the power supply unit includes a power supply and a power supply timing control module, and the power supply timing control module is connected to the power supply.
Compared with the prior art, the embodiment of the utility model provides an among the pipeline magnetic leakage check out test set, because a plurality of signal acquisition daughter boards of data acquisition unit establish ties to the main control unit through an ethernet field bus, consequently, pipeline magnetic leakage check out test set can be under the condition of many signal nodes, and the high-speed real-time transmission of realization of the collection signal of single net twine is handled. The system is succinct reliable, and then, the mode of single net twine collection signal can effectively reduce internode cable and main cylinder body cable and perforate, realize miniaturized encapsulation to obtain airtight mechanical protection inside the arm shaft of exploring of pipeline magnetic leakage check out test set, effectively strengthen the reliable signal acquisition and the real-time data transmission of pipeline magnetic leakage check out test set at complicated operating mode, guarantee pipeline magnetic leakage check out test set's measurement accuracy.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic structural diagram of a pipeline magnetic flux leakage detection apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a main cylinder body line-passing front cover plate of the pipeline magnetic flux leakage detection device according to an embodiment of the present invention; and
fig. 3 is a schematic clock design diagram of the pipeline magnetic flux leakage detection apparatus according to an embodiment of the present invention.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.
The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In some instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the invention.
According to the utility model discloses a main idea, the utility model discloses a pipeline magnetic leakage check out test set includes: a power supply unit; the data acquisition unit is connected with the power supply unit and at least comprises a plurality of magnetic flux leakage and angle signal sensors; the main control unit is connected with the power supply unit and the data acquisition unit, and the main control unit acquires signals from the magnetic flux leakage sensors and the angle sensors.
The technical content of the present invention will be further explained with reference to the drawings and the embodiments.
Please refer to fig. 1, which shows a schematic structural diagram of a pipeline magnetic flux leakage detecting apparatus according to an embodiment of the present invention. In the preferred embodiment of the present invention, the pipeline magnetic flux leakage detection device mainly includes a power supply unit 1, a data acquisition unit 2 and a main control unit 3.
The utility model discloses an in the optional embodiment, power supply unit 1 includes power 11 and power timing control module 12, and power timing control module 12 connects power 11 to distribute voltage to each device in data acquisition unit 2 and the main control unit 3 accurately, guarantee that each device in data acquisition unit 2 and the main control unit 3 is normally gone up the electricity. The power timing control module 12 may be a DC-DC power timing control circuit.
The data acquisition unit 2 is connected with the power supply unit 1. Specifically, in the alternative embodiment shown in fig. 1, the data acquisition unit 2 comprises at least a plurality of signal acquisition sub-boards 21. The signal acquisition daughter board 21 is used for signal acquisition, signal processing, and protocol conversion. Each of the signal acquisition daughter boards 21 includes a field programmable gate array circuit 211, an analog-to-digital converter 212(ADC), and a probe sensor 213. In an alternative embodiment of the present invention, each of the fpga circuit 211, the adc 212 and the probe sensor 213 is integrally formed in a signal acquisition daughter board 21. The utility model discloses an in an embodiment, signal acquisition daughter board 21 can be simultaneously parallelly gathered hundreds of ways and come from probe sensor 213 signal, can use ETHERCAT IP soft core in the signal acquisition daughter board 21, accomplishes the transmission of the creation of multichannel acquisition signal to the ETHERCAT frame, and FPGA firmware design realizes two-way communication transmission, can calibrate probe sensor 213. Further, the data acquisition unit 2 further includes a plurality of odometer wheel sensors (not shown) for calculating a travel distance of the odometer wheel, which can calculate a travel distance of the internal detector by detecting rotation of a magnet embedded in the odometer wheel through a proximity switch.
The main control unit 3 is connected with the power supply unit 1 and the data acquisition unit 2. The main control unit 3 collects signals from the respective signal collection sub-boards 21. In an embodiment of the present invention, the main control unit 3 may be a field programmable gate array system on chip (FPGA SOC). As shown in fig. 1, in the embodiment of the present invention, a plurality of signal acquisition daughter boards 21 are serially connected to the main control unit 3 through an ethernet field bus 5 (ethernet bus). The ethernet field bus 5 (ethernet bus) connects the data acquisition unit 2 and the main control unit 3, and completes the functions of acquisition signal transmission and main control command transmission. In the transmission of ETHERCAT, realized that a net twine connects all a plurality of signal acquisition daughter boards 21, can reach the real-time high-speed transmission of thousands of way signals, can realize single net twine signal transmission between data acquisition unit 2 and main control unit 3 and connect, and then, can effectively reduce internode cable and main cylinder body cable and perforate, strengthen the mechanical protection intensity of main cylinder body and increase the connection stability of the device of each unit. Furthermore, in the embodiment of the present invention, the pipeline magnetic leakage detection device adopts the ethernet bus protocol to satisfy the transmission processing requirement of the magnetic leakage detector up to 2700-way detection signal with the real-time signal transmission speed of 1000 MHz.
Further, please refer to fig. 2, which shows a schematic structural diagram of the main cylinder body line-passing front cover plate of the pipeline magnetic flux leakage detection apparatus according to an embodiment of the present invention. As shown in fig. 2, in the embodiment of the present invention, because the ethernet field bus 5 (ethernet bus) is used, only two through holes 6 are reserved in the protection cover of the main cylinder for signal power transmission, thereby effectively increasing the pressure resistance of the main cylinder.
Further, in the embodiment shown in fig. 1, the main control unit 3 further comprises a gyroscope. The gyroscope is used for recording the rolling of the inner detector in the pipeline detection, recording the posture of the inner detector and tracking the detection of specific defect positions, and can be further developed according to the posture position, adjust the stability of the inner detector and realize stable and uniform detection.
Further, in the embodiment shown in fig. 1, the main control unit 3 further comprises a rotary encoder. The rotary encoder measures the real-time attitude angle of the inner detector by using a weight.
Further, in the embodiment shown in fig. 1, the main control unit 3 further comprises an accelerometer. The accelerometer is used for recording the running acceleration of the internal detection in the pipeline detection process, can be used for judging the driving mileage of the internal detector in an auxiliary mode, can also be used for judging whether the internal detector is overspeed or not, and can be used for carrying out auxiliary judgment on the detected data to accurately position the position of a defect.
Further, in the embodiment shown in fig. 1, the main control unit 3 further includes a storage unit. Because the pipeline magnetic leakage detection device is applied to the inside of the oil and gas pipeline, in order to meet the storage requirement of detection data of a long-distance oil and gas pipeline (for example, an oil and gas pipeline of 200 kilometers), optionally, the storage unit comprises an NAND FLASH chip, and further, a real-time signal of 400MHz is stored by using an NV-DDR2 protocol.
Further, please refer to fig. 3, which shows a schematic clock design diagram of the pipeline magnetic flux leakage detection apparatus according to an embodiment of the present invention. In the embodiment shown in fig. 3, the synchronous clock design can meet the requirement of 200 km defect detection fault positioning accuracy, and optionally, a high-precision active crystal oscillator is adopted, so that the frequency stability reaches +/-0.5 multiplied by 10-6And the time service requirement is met.
To sum up, the embodiment of the utility model provides an among the pipeline magnetic leakage check out test set, because a plurality of signal acquisition daughter boards of data acquisition unit establish ties to the main control unit through an ethernet field bus, consequently, pipeline magnetic leakage check out test set can realize the high-speed real-time transmission of the collection signal of single net twine and handle under the condition of many signal nodes. Furthermore, the mode that single net twine gathered the signal can effectively reduce internode cable and main cylinder body cable and perforate, realize miniaturized encapsulation to obtain airtight mechanical protection in pipeline magnetic leakage check out test set's probe arm pivot inside, effectively strengthen the reliable signal acquisition and the real-time data transmission of pipeline magnetic leakage check out test set at complicated operating mode, guarantee pipeline magnetic leakage check out test set's measurement precision.
Although the present invention has been described with reference to alternative embodiments, it is not intended to be limited to the embodiments disclosed herein. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention is subject to the scope defined by the claims.
Claims (9)
1. The utility model provides a pipeline magnetic leakage check out test set which characterized in that, pipeline magnetic leakage check out test set includes:
a power supply unit;
the data acquisition unit is connected with the power supply unit and at least comprises a plurality of signal acquisition sub-boards; and
the main control unit is connected with the power supply unit and the data acquisition unit, and the signal acquisition sub-boards are connected in parallel to the main control unit through an Ethernet field bus.
2. The apparatus of claim 1, wherein each of said signal acquisition daughter boards comprises a field programmable gate array circuit, an analog-to-digital converter, and a probe sensor.
3. The apparatus of claim 2, wherein the field programmable gate array circuit board, the analog-to-digital converter and the probe sensor are integrally packaged.
4. The apparatus of claim 1, wherein the main control unit further comprises a gyroscope.
5. The apparatus of claim 1, wherein the main control unit further comprises a rotary encoder.
6. The apparatus of claim 1, wherein the main control unit further comprises an accelerometer.
7. The apparatus of claim 1, wherein the main control unit further comprises a storage unit.
8. The apparatus of claim 1, wherein the data acquisition unit further comprises a plurality of odometer wheel sensors.
9. The pipeline magnetic flux leakage detection device of claim 1, wherein the power supply unit comprises a power supply and a power supply timing control module, and the power supply timing control module is connected with the power supply.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022308800.3U CN213091553U (en) | 2020-10-16 | 2020-10-16 | Pipeline magnetic leakage detection equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022308800.3U CN213091553U (en) | 2020-10-16 | 2020-10-16 | Pipeline magnetic leakage detection equipment |
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| CN213091553U true CN213091553U (en) | 2021-04-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114720038A (en) * | 2022-04-26 | 2022-07-08 | 沈阳工业大学 | Spherical internal detection system for gas pipeline |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114720038A (en) * | 2022-04-26 | 2022-07-08 | 沈阳工业大学 | Spherical internal detection system for gas pipeline |
| CN114720038B (en) * | 2022-04-26 | 2023-11-24 | 沈阳工业大学 | Spherical internal detection system for gas pipeline |
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