Detection method and detection device for crude oil output hose

Abstract

The invention relates to the technical field of crude oil transportation, in particular to a detection method and a detection device for a crude oil output hose, and the detection method comprises the following steps: installing the output hose on a retainer, and adjusting the distance between tomography equipment and the outer side wall of the output hose to be a first set value # imgabs0 # by a control system according to a position regulation strategy; and the control system controls the tomography equipment to move in the axial direction of the output hose and perform detection, so that the control system obtains the projection of the output hose and reconstructs the projection to obtain a detection report. The detection device comprises a holder, a control system, a driving system and tomography equipment. According to the invention, the detection accuracy of the crude oil output hose is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of crude oil transportation, and in particular to a detection method and a detection device for a crude oil export hose. Background Art

[0002] Pipeline transportation is an important way of transporting crude oil at present, and its maintenance is more complicated and difficult than barge transportation. For conventional hoses, there are currently detection methods such as X-ray detection, infrared imaging detection, and eddy current detection, but these technologies have many limitations when applied to multi-layer heterogeneous composite offshore crude oil export hoses. The special structure and process characteristics of multi-layer heterogeneous composite crude oil export hoses make their detection more complicated, and there may be many potential forms of damage inside them, such as cracks, wear, corrosion, etc. However, these internal damages are often difficult to effectively identify through conventional non-destructive testing methods. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the related art. To this end, the present invention provides a detection method and a detection device for a crude oil export hose, which solves the technical problem of the difficulty in detecting the export hose in the prior art and improves the detection accuracy of the crude oil export hose.

[0004] The present invention provides a method for detecting a crude oil export hose, comprising: The external transmission hose is installed on the retaining frame, and the control system adjusts the distance between the tomography device and the outer wall of the external transmission hose to a first set value according to the position control strategy ; The position control strategy is: in, represents the sampling times of the tomography device, Indicates The position of the secondary tomography device acquires data, Indicates the target value set by the control system, that is, the first set value As the target value set by the control system, Indicates The actual value of the distance between the sub-sampling tomography device and the external transmission hose, represents the proportionality coefficient, represents the integral coefficient, represents the differential coefficient, The number sequence representing the sampling frequency assignment of the tomography device, , express The assigned value The distance between the secondary tomography device and the external transmission hose, Indicates setting error; The control system controls the tomography device to move along the axial direction of the external transmission hose and perform detection, so that the control system obtains the projection of the external transmission hose and then reconstructs the projection to obtain a detection report.

[0005] A further improvement of the crude oil export hose detection method of the present invention is that the tomography device has a ray source and a detector, including: When the control system controls the tomography device to move along the axial direction of the external transmission hose and perform detection, The control system controls the ray source to generate a radiation source according to an intensity control strategy, and the intensity control strategy is: in, represents the intensity of the incident ray, represents the intensity of the outgoing ray, Indicates the number of layers of the external transmission hose. Indicates the first Uneven number of layers, Indicates the external hose Layer The thickness of the uneven layers, Indicates the external hose Layer Linear attenuation coefficient corresponding to non-single elements in uneven layers; The detector identifies the intensity of the incident radiation, and the control system then establishes a projection of the external transmission hose based on the intensity of the incident radiation.

[0006] A detection device for a crude oil export hose, the detection device is used to perform the above-mentioned detection method, the detection device comprises a holder, a control system, a drive system and a tomography device, the export hose is installed on the holder, the tomography device is installed on the drive system, the control system comprises a control unit and a display unit, the tomography device and the drive system are controlled and connected to the control system; The control unit controls the driving system according to the position control strategy, so that the driving system drives the tomography device to correspond to the external transmission hose. The control unit controls the tomography device to detect the external transmission hose according to the intensity control strategy, and then the display unit displays the detection report.

[0007] A further improvement of the detection device for the crude oil export hose of the present invention is that the drive system includes a first track extending along the axial direction of the export hose, a first slider slidably arranged on the first track, a second track installed on the first slider, and a second slider slidably arranged on the second track, and a first drive motor and a second drive motor are arranged on the side of the first track, the first drive motor is driven to connect to the first slider, the second drive motor is driven to connect to the second slider, and the first drive motor and the second drive motor are connected to the control unit.

[0008] A further improvement of the detection device for the crude oil export hose of the present invention is that the first track has two tracks, and the first sliding blocks are correspondingly provided with two tracks, and the two first tracks are located on both sides of the export hose; The second track is connected to the two first sliding blocks, and an extending direction of the second track is perpendicular to an extending direction of the first track.

[0009] A further improvement of the detection device for the crude oil export hose of the present invention is that the tomography device includes a rotating table, a laser displacement sensor, a ray source and a detector; The position of the second slider is adjusted along the second track by the second driving motor so that the radiation source and the detector correspond to the external transmission hose, and then the first slider is driven to move along the first track and the rotating table is rotated by the first driving motor so that the radiation source and the detector detect the external transmission hose.

[0010] A further improvement of the detection device for the crude oil export hose of the present invention is that the tomography equipment also includes a rotating base installed on the second slider and a first shell and a second shell fixed to the rotating base and in a ring shape, the laser displacement sensor is installed on the first shell, the rotating table is installed on the second shell, two radiation sources are provided, two detectors are provided, and the radiation source and the detector are installed on the rotating table and are located in the second shell.

[0011] A further improvement of the detection device for the crude oil export hose of the present invention is that a rotating track is formed in the second shell, and the rotating table is installed on the rotating track. The radiation source and the detector slide along the rotating table in the rotating track to drive the radiation source and the detector to rotate around the export hose and detect the export hose.

[0012] A further improvement of the detection device for the crude oil export hose of the present invention is that it also includes a hoisting system, wherein the hoisting system includes two hoisting rails arranged outside the driving system, a hoisting slider slidably arranged on the hoisting rails, and a hoisting frame installed on the hoisting slider; The external transmission hose is installed on the hanging frame, and then the hanging slide block is moved along the hanging track, so that the external transmission hose is driven to correspond to the retaining frame, and then the external transmission hose is placed on the retaining frame.

[0013] A further improvement of the detection device for the crude oil export hose of the present invention is that the lifting frame includes a lifting leg upright on the lifting slider, a lifting truss installed on the lifting leg and in a horizontal state, a plurality of hooks slidably mounted on the lifting truss, and a sling hung on the hook, and the sling is used to connect the export hose.

[0014] The detection method and device of the crude oil export hose of the present invention control the tomography equipment through the control system to scan the export hose section by section according to the scanning range. After completing the internal scanning and detection of the entire export hose, the control system will splice the scanning results and finally form a detection report of the export hose. This process realizes the automation of the internal detection of the export hose, can accurately detect the inside of the export hose, and improves the detection efficiency and detection accuracy.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of a detection device for a crude oil export hose provided in an embodiment of the present invention.

[0018] Figure 2 yes Figure 1 Schematic diagram of the enlarged portion A.

[0019] Figure 3 Schematic diagram of a tomographic scanning device in a detection device for a crude oil export hose provided in an embodiment of the present invention Figure 1 .

[0020] Figure 4 Schematic diagram of a tomographic scanning device in a detection device for a crude oil export hose provided in an embodiment of the present invention Figure 2 , wherein the second shell is omitted.

[0021] Figure 5 It is a schematic diagram of a retaining frame in a detection device for a crude oil export hose provided in an embodiment of the present invention.

[0022] Reference numerals: 1. Drive system; 11. First track; 12. First slider; 13. Second track; 14. Second slider; 2. Retaining frame; 21. Retaining base; 22. Retaining legs; 23. Retaining pipe support; 24. Retaining limit strip; 3. Tomography equipment; 31. Rotating base; 32. First shell; 33. Laser displacement sensor; 34. Second shell; 35. Rotating table; 36. Radiation source; 37. Detector; 4. External transmission hose; 5. Control system; 61. Lifting track; 62. Lifting slider; 63. Lifting legs; 64. Lifting truss; 65. Hook; 66. Suspension belt; 7. Shielding wall. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0024] Combine the following Figure 1 A method for detecting a crude oil export hose of the present invention is described, comprising: The external transmission hose is installed on the holder, and the control system adjusts the distance between the tomography device and the outer wall of the external transmission hose to a first set value according to the position control strategy. ; The position control strategy is: in, represents the sampling times of the tomography device, Indicates The position of the tomography device is collected in the second time (PID controller is in the The control signal calculated by the sampling is used to adjust the position of the tomography device). Indicates the target value set by the system (indicates the first set value), Indicates The actual value of the distance between the sub-sampling tomography device and the external transmission hose, represents the proportionality coefficient, represents the integral coefficient, represents the differential coefficient, The number sequence representing the sampling frequency assignment of the tomography device, , express The assigned value The distance between the secondary tomography device and the external transmission hose, Indicates setting error; The control system controls the tomography device to move along the axial direction of the external transmission hose and perform detection, so that the control system obtains the projection of the external transmission hose and then reconstructs the projection to obtain a detection report.

[0025] It should be noted that , , They are all constants in the control system. The proportional control link adjusts the output according to the proportional coefficient based on the size of the deviation signal. The larger the proportional coefficient, the stronger the output response to the deviation; the integral coefficient determines the strength of the integral effect. The larger the coefficient, the stronger the integral effect and the faster the steady-state error is eliminated; the differential control adjusts the system in advance according to the rate of change of the deviation signal. The differential coefficient determines the strength of the differential effect, which can improve the dynamic performance of the system and enhance the stability and rapid response capability of the system; technicians can adjust the differential coefficient in the control system according to actual needs. , , .

[0026] It should be noted that the control system is a PID control system, and the position control strategy is a traditional PID control strategy.

[0027] Preferably, the first set value in the tomography device represents the distance between each point on the inner wall of the tomography device and the side wall of the external transmission hose, specifically, the difference between the length of the line between each point on the inner wall of the tomography device and the center of the radial section of the external transmission hose (corresponding to a section of the tomography device) minus the radius of the external transmission hose.

[0028] Preferably, the tomography device samples once at each moment, and the PID control system obtains a At the same time, the PID control system will sample times and The value is assigned to the error accumulation module in the PID control system, so that the error accumulation module calculates the accumulated error to adjust the control output to eliminate the steady-state error of the control system.

[0029] Preferably, the error is set as the setting value of the control system. When the tomography device is adjusted to the set position, the detection accuracy of the control system is improved.

[0030] In a preferred implementation example of the crude oil export hose detection method of the present invention, the tomography device has a radiation source and a detector, including: Based on the control system, the tomography equipment is controlled to move along the axial direction of the external transmission hose and perform detection. The control system controls the ray source to generate radiation source according to the intensity control strategy. The intensity control strategy is: in, represents the intensity of the incident ray, represents the intensity of the outgoing ray, Indicates the number of layers of the external transmission hose. Indicates the first Uneven number of layers, Indicates the external hose Layer The thickness of the uneven layers, Indicates the external hose Layer Linear attenuation coefficient corresponding to non-single elements in uneven layers; The detector identifies the intensity of the incident radiation, and the control system then establishes a projection of the external transmission hose based on the intensity of the incident radiation.

[0031] In a specific implementation case, The value is 0~0.1mm, The value is 0~0.1mm.

[0032] When the collected data of the laser displacement sensor meets the requirements of the position control strategy, the control system 5 controls the tomography device 3 to stop. At this time, the distance between the tomography device 3 and the outer wall of the external transmission hose 4 meets the requirements. Through this refined position control strategy, the accuracy of the tomography device 3 in detecting the external transmission hose 4 is improved, and the distance between the radiation source 36 and the detector 37 of the tomography device 3 and the external transmission hose 4 is avoided to be too large, thereby causing data distortion.

[0033] Preferably, a plurality of retaining racks 2 are provided, and the setting direction of the plurality of retaining racks 2 is consistent with the extension direction of the first track 11, thereby ensuring that when the tomography device 3 moves along the first track 11, the distance between the tomography device 3 and the external transmission hose 4 always complies with the position control strategy, thereby ensuring the accuracy of the detection result.

[0034] Preferably, the external transmission hose 4 is a multi-layer heterogeneous composite structure, and the elements contained in the materials used in each layer of the structure are also different, so the reflection effect of the rays is also different, so that the condition of the external transmission hose 4 can be identified by adjusting the ray intensity of the ray source 36.

[0035] The detection method of the crude oil export hose of the present invention controls the tomography device 3 to scan the export hose 4 section by section according to the scanning range of the export hose 4 through the control system 5. After completing the internal scanning and detection of the entire export hose 4, the control system 5 will splice the scanning results and finally form a detection report of the export hose 4. This process realizes the automation of the internal detection of the export hose 4, can accurately detect the inside of the export hose 4, and improves the detection efficiency and detection accuracy.

[0036] A detection device for a crude oil export hose, the detection device is used to perform the above detection method, such as Figure 1 and Figure 2 As shown, the detection device includes a holder 2, a control system 5, a drive system 1 and a tomography device 3, the external transmission hose 4 is installed on the holder 2, the tomography device 3 is installed on the drive system 1, the control system 5 includes a control unit and a display unit, and the tomography device 3 and the drive system 1 are controlled and connected to the control system 5; The control unit controls the driving system 1 according to the position control strategy, so that the driving system 1 drives the tomography device 3 to correspond to the external transmission hose 4. The control unit controls the tomography device 3 to detect the external transmission hose 4 according to the strength control strategy, and then the display unit displays the detection report.

[0037] Furthermore, if Figure 1 As shown, the drive system 1 includes a first rail 11 extending along the axial direction of the external transmission hose 4, a first slider 12 slidably arranged on the first rail 11, a second rail 13 installed on the first slider 12, and a second slider 14 slidably arranged on the second rail 13. A first drive motor and a second drive motor are arranged on the side of the first rail 11. The first drive motor is driven and connected to the first slider 12, and the second drive motor is driven and connected to the second slider 14. The first drive motor and the second drive motor are connected to a control unit.

[0038] Furthermore, the first track 11 has two tracks, and two first sliders 12 are correspondingly provided, and the two first tracks 11 are located on both sides of the external transmission hose 4; the second track 13 is connected to the two first sliders 12, and the extension direction of the second track 13 is perpendicular to the extension direction of the first track 11.

[0039] The control unit receives information from the laser displacement sensor and controls the second slider 14 to move along the second track 13 according to the position control strategy, thereby driving the tomography device 3 and the external transmission hose 4 to maintain a set position relationship. Then the control unit controls the first slider 12 to move along the first track 11, thereby driving the tomography device 3 to move along the first track 11, so as to facilitate the tomography device 3 to detect the external transmission hose 4.

[0040] Furthermore, if Figure 2 , Figure 3 and Figure 4 As shown, the tomography device 3 includes a rotating table, a laser displacement sensor 33, a ray source 36 and a detector 37; The position of the second slider 14 is adjusted along the second track 13 by the second driving motor so that the radiation source 36 and the detector 37 correspond to the external transmission hose 4, and then the first slider 12 is driven by the first driving motor to move along the first track 11 and the turntable is rotated so that the radiation source 36 and the detector 37 detect the external transmission hose 4.

[0041] Specifically, the tomography device 3 also includes a rotating base 31 installed on the second slider 14, and a first shell 32 and a second shell 34 fixed to the rotating base 31 and in a ring shape. The laser displacement sensor is installed on the first shell 32, the rotating table is installed on the second shell 34, two radiation sources 36 are provided, and two detectors 37 are provided. The radiation sources 36 and the detectors 37 are installed on the rotating table and are located in the second shell 34.

[0042] Specifically, a rotating track is formed in the second shell 34, and the rotating table 35 is installed on the rotating track. The ray source 36 and the detector 37 slide along the rotating table 35 in the rotating track to drive the ray source 36 and the detector 37 to rotate around the external transmission hose and detect the external transmission hose.

[0043] Preferably, a passage opening is formed at a position of the tomography device 3 corresponding to the holder 2 , so as to avoid interference between the tomography device 3 and the external transmission hose 4 and the holder 2 .

[0044] Furthermore, if Figure 5 As shown, the retaining frame 2 includes a retaining base 21, a retaining leg 22 fixed to the retaining base 21, and a retaining pipe support 23 fixed to the retaining leg 22. The retaining pipe support 23 has the same shape as the bottom of the outer wall of the external transfer hose 4. A retaining limit strip 24 is provided on the top surface of the retaining pipe support 23 to prevent the external transfer hose 4 from moving when the external transfer hose 4 is placed on the retaining pipe support 23.

[0045] Furthermore, it also includes a hoisting system, which includes two hoisting rails 61 arranged outside the driving system 1, a hoisting slider 62 slidably arranged on the hoisting rails 61, and a hoisting frame installed on the hoisting slider 62; By installing the external transfer hose 4 on the hanging frame, and then moving the hanging slider 62 along the hanging track 61 , the external transfer hose 4 is driven to correspond to the retaining frame 2 , and then the external transfer hose 4 is placed on the retaining frame 2 .

[0046] Specifically, the lifting frame includes a lifting leg 63 upright on the lifting slider 62, a lifting truss 64 installed on the lifting leg 63 and in a horizontal state, a plurality of hooks 65 slidably mounted on the lifting truss 64, and a sling 66 hung on the hook 65. The sling 66 is used to connect the external transmission hose 4. When the external transmission hose 4 is placed on the retaining frame 2, the sling 66 is removed to facilitate the operation of the tomography equipment 3.

[0047] Specifically, shielding walls 7 may be provided on the sides of the hoisting system and the driving system 1 to shield the tomography device 3 from harm.

[0048] In a specific implementation case of the present invention, the external transmission hose 4 is hoisted and placed on the retaining frame 2 by the hoisting system, and then the hoisting belt 66 is removed; The laser displacement sensor of the tomography device 3 works, and then the control system 5 controls the driving system 1 to work according to the laser displacement sensor, so that the driving system 1 drives the tomography device 3 to move, so that the tomography device 3 and the external transmission hose 4 maintain a set distance, and then the driving system 1 controls the tomography device 3 to move along the axial extension direction of the external transmission hose 4. At this time, the radiation source 36 and the detector 37 work, so that the control system 5 obtains the projection of the external transmission hose 4, repeats the above operation multiple times, obtains multiple projections of the external transmission hose 4, and then reconstructs the projection to obtain a detection report.

[0049] The detection method and detection device of the crude oil export hose 4 of the present invention controls the tomography device 3 to scan the export hose 4 section by section according to the scanning range of the export hose 4 through the control system 5. After completing the internal scanning and detection of the entire export hose 4, the control system 5 will splice the scanning results and finally form a detection report of the export hose 4. This process realizes the automation of the internal detection of the export hose 4, can accurately detect the inside of the export hose 4, and improve the detection efficiency and detection accuracy.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for detecting a crude oil export hose, characterized in that: include: The external transmission hose is installed on the holder, and the control system adjusts the distance between the tomography device and the outer wall of the external transmission hose to a first set value according to the position control strategy. ; The position control strategy is: in, represents the sampling times of the tomography device, Indicates The position of the secondary tomography device is collected, Indicates the target value set by the control system, that is, the first set value As the target value set by the control system, Indicates The actual value of the distance between the sub-sampling tomography device and the external transmission hose, represents the proportionality coefficient, represents the integral coefficient, represents the differential coefficient, The number sequence representing the sampling frequency assignment of the tomography device, , express The assigned value The distance between the secondary tomography device and the external transmission hose, Indicates setting error; The control system controls the tomography device to move along the axial direction of the external transmission hose and perform detection, so that the control system obtains the projection of the external transmission hose and then reconstructs the projection to obtain a detection report.

2. The method for detecting a crude oil export hose according to claim 1, characterized in that: The tomography device has a ray source and a detector, including: When the control system controls the tomography device to move along the axial direction of the external transmission hose and perform detection, The control system controls the ray source to generate a radiation source according to an intensity control strategy, and the intensity control strategy is: in, represents the intensity of the incident ray, represents the intensity of the outgoing ray, Indicates the number of layers of the external transmission hose. Indicates the first Uneven number of layers, Indicates the external hose Layer The thickness of the uneven layers, Indicates the external hose Layer Linear attenuation coefficient corresponding to non-single elements in uneven layers; The detector identifies the intensity of the incident radiation, and the control system then establishes a projection of the external transmission hose based on the intensity of the incident radiation.

3. A detection device for a crude oil export hose, characterized in that: The detection device is used to perform the detection method according to any one of claims 1 to 2, the detection device comprises a holder, a control system, a drive system and a tomography device, the external transmission hose is installed on the holder, the tomography device is installed on the drive system, the control system comprises a control unit and a display unit, the tomography device and the drive system are controlled and connected to the control system; The control unit controls the driving system according to the position control strategy, so that the driving system drives the tomography device to correspond to the external transmission hose. The control unit controls the tomography device to detect the external transmission hose according to the intensity control strategy, and then the display unit displays the detection report.

4. The detection device for the crude oil export hose according to claim 3 is characterized in that: The driving system includes a first track extending along the axial direction of the external transmission hose, a first slider slidably arranged on the first track, a second track installed on the first slider, and a second slider slidably arranged on the second track. A first driving motor and a second driving motor are arranged on the side of the first track. The first driving motor is drivingly connected to the first slider, and the second driving motor is drivingly connected to the second slider. The first driving motor and the second driving motor are connected to the control unit.

5. The detection device for crude oil export hose according to claim 4, characterized in that: The first track has two tracks, and the first sliding blocks are correspondingly provided with two tracks, and the two first tracks are located on both sides of the external transmission hose; The second track is connected to the two first sliding blocks, and an extending direction of the second track is perpendicular to an extending direction of the first track.

6. The detection device for crude oil export hose according to claim 5, characterized in that: The tomography device includes a rotating table, a laser displacement sensor, a ray source and a detector; The position of the second slider is adjusted along the second track by the second driving motor so that the radiation source and the detector correspond to the external transmission hose, and then the first slider is driven to move along the first track and the rotating table is rotated by the first driving motor so that the radiation source and the detector detect the external transmission hose.

7. The detection device for crude oil export hose according to claim 6, characterized in that: The tomography device also includes a rotating base installed on the second slider, and a first shell and a second shell fixed to the rotating base and in a ring shape. The laser displacement sensor is installed on the first shell, and the rotating table is installed on the second shell. Two radiation sources are provided, and two detectors are provided. The radiation source and the detector are installed on the rotating table and are located in the second shell.

8. The detection device for crude oil export hose according to claim 7, characterized in that: A rotating track is formed in the second shell, and the rotating table is installed on the rotating track. The ray source and the detector slide along the rotating table in the rotating track to drive the ray source and the detector to rotate around the external transmission hose and detect the external transmission hose.

9. The detection device for crude oil export hose according to claim 3, characterized in that: It also includes a hoisting system, which includes two hoisting rails arranged outside the driving system, a hoisting slider slidably arranged on the hoisting rails, and a hoisting frame installed on the hoisting slider; The external transmission hose is installed on the hanging frame, and then the hanging slide block is moved along the hanging track, so that the external transmission hose is driven to correspond to the retaining frame, and then the external transmission hose is placed on the retaining frame.

10. The detection device for the crude oil export hose according to claim 9, characterized in that: The hoisting frame includes a hoisting leg erected on the hoisting slider, a hoisting truss installed on the hoisting leg and in a horizontal shape, a plurality of hooks slidably mounted on the hoisting truss, and a sling hung on the hook, wherein the sling is used to connect the external transport hose.

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