A corrosion resistance detection device for high pour point oil pipelines

Abstract

The present invention belongs to the technical field of pipeline detection equipment, and relates to a corrosion resistance detection equipment for high pour point oil pipelines, which includes an equipment housing, a central column, a driving unit, and a ranging system. In the equipment housing of the present invention, there is a relatively rotatable central column, and current adjustment units are symmetrically arranged on both sides thereof, including a closed-loop control system composed of an arc-shaped plate, an abutting rod, and an adjustable resistor. When the device travels in a curved pipeline, the relative deflection of the housing and the central column drives the arc-shaped plate to push the abutting rod, and the loop resistance value is changed through a sliding joint, thereby adjusting the braking force of the electromagnetic powder brake on the driving wheel to achieve adaptive speed regulation. The ranging motor drives the rangefinder to rotate at a high speed to collect data on the inner wall of the pipeline. The present invention ensures accurate corrosion detection data can be obtained in both straight pipe sections and bent pipe sections by automatically correcting the detection posture, effectively solving the technical problem of inaccurate measurement in the bent pipe section of traditional detection devices.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline detection equipment, in particular to a high-condensate oil pipeline anti-corrosion performance detection device. Background Art

[0002] During the long-term operation of high-condensate oil pipelines, the inner wall is very prone to corrosion due to the complex composition of crude oil, high sulfur content and environmental factors, which seriously affects the safe operation of the pipeline. Traditional detection methods mainly rely on manual inspections or fixed detection equipment, which are difficult to adapt to different pipe diameters and complex working conditions. Especially in curved pipeline sections, the detection device is prone to tilt due to the difference between the internal and external paths, causing distortion of the distance measurement data. In the existing technology, although some automated detection equipment can move along the pipeline, it lacks an adaptive adjustment mechanism and cannot correct the posture deviation caused by the bending of the pipeline in real time, resulting in insufficient corrosion detection accuracy. In addition, conventional detection devices are often fixed in structure, making it difficult to adapt to pipelines of different specifications, and the detection data lacks intuitive visual analysis methods.

[0003] In view of this, the present invention proposes a high-condensate oil pipeline anti-corrosion performance detection device to solve the above technical problems. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the present invention to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0005] A high condensate oil pipeline anti-corrosion performance testing device includes a device housing, a cavity is provided in the device housing, a center column is rotatably connected to the cavity via a bearing, and two current adjustment units are symmetrically provided on the center column;

[0006] Among them, the current adjustment unit includes an arc-shaped plate, which is arranged on one side of the central column. One side of the arc-shaped plate abuts against the movable abutting rod. A sliding joint is provided at the lower end of the abutting rod. A resistor abuts under the sliding joint. The end of the resistor away from the arc-shaped plate is connected to the electromagnetic powder brake through a circuit. The electromagnetic powder brake is fixedly connected to the shaft of the driving wheel. When the central column rotates, the arc-shaped plate is driven to squeeze the abutting rod, so that the abutting rod drives the sliding joint to adjust the size of the connected resistance, thereby controlling the input current of the electromagnetic powder brake and adaptively adjusting the speed of the driving wheel.

[0007] Preferably, a turntable is fixedly connected to the middle of the central column, and an arc-shaped plate is fixedly connected to the turntable.

[0008] Preferably, one end of the abutting rod away from the arc-shaped plate slides and extends into the sleeve, the sleeve is fixedly connected to the side wall of the cavity, and the abutting rod is fixedly connected to the sleeve through a return spring.

[0009] Preferably, the resistor is fixedly connected to the side wall of the cavity. One end of the resistor away from the turntable is fixedly connected with a first terminal, and a second terminal is fixedly connected to the sliding contact.

[0010] Preferably, the first terminal is connected to the electromagnetic powder brake through a circuit, and the second terminal is connected to the mobile power supply through a circuit, forming a closed loop of the mobile power supply, the second terminal, the resistor, the first terminal and the electromagnetic powder brake.

[0011] Preferably, four driving units are provided on the outer side of the equipment shell. The driving unit includes a connecting seat, a connecting plate is detachably connected to the connecting seat, an end plate is fixedly connected to the end of the connecting plate, a driving wheel is installed at the end of the end plate through a spring rod, and the driving wheel is driven by a driving motor.

[0012] Preferably, the connecting plate is selectively replaced according to the current high-viscosity oil pipeline, so as to be able to match the radius of the currently measured high-viscosity oil pipeline.

[0013] Preferably, the driving units symmetrically arranged up and down in the equipment shell are fixedly connected to the upper and lower ends of the central column through the connecting seat, and the driving units symmetrically arranged left and right in the equipment shell are respectively fixedly connected to the left and right sides of the equipment shell through the connecting seat.

[0014] Preferably, a ranging motor is fixedly connected to one side of the equipment shell, and a rangefinder is fixedly connected to the output shaft of the ranging motor.

[0015] Preferably, a limiting rod is fixedly connected to the central column, limiting blocks are arranged on both sides of the limiting rod, and the limiting blocks are fixedly connected to the bottom of the cavity.

[0016] Advantages of the present invention:

[0017] The anti-corrosion performance detection equipment for high-viscosity oil pipelines provided by the present invention realizes the adaptive speed regulation function during the pipeline detection process through the linkage of the innovative current adjustment unit and the electromagnetic powder brake. When the device tilts due to the internal and external path differences in the curved pipeline, the relative rotation of the central column and the shell will drive the arc-shaped plate to push the abutting rod, dynamically adjusting the loop resistance value, so as to accurately control the braking force of the electromagnetic powder brake on the driving wheel, so that the best deceleration intensity is automatically matched according to the pipeline bending degree, ensuring that the detection device is always parallel to the pipeline cross-section, so that the rangefinder obtains accurate radius measurement data. A pipeline inner wall contour broken line diagram is generated in real time, accurately identifying the position and degree of inner wall corrosion defects. Description of the Drawings

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Among them:

[0020] Figure 1 It is a schematic diagram of the overall structure of a corrosion resistance detection device for high pour point oil pipelines of the present invention;

[0021] Figure 2 It is a schematic diagram of the back connection structure of a corrosion resistance detection device for high pour point oil pipelines of the present invention;

[0022] Figure 3 It is a schematic diagram of the connection structure inside the housing of a corrosion resistance detection device for high pour point oil pipelines of the present invention;

[0023] Figure 4 For the present invention Figure 3 An enlarged schematic diagram of the structure at A in;

[0024] Figure 5 It is a schematic diagram of the connection structure of the current adjustment unit in a corrosion resistance detection device for high pour point oil pipelines of the present invention;

[0025] Figure 6 For the present invention Figure 5 An enlarged schematic diagram of the structure at B in;

[0026] Figure 7 It is a schematic diagram of the working state of a corrosion resistance detection device for high pour point oil pipelines of the present invention in a high pour point oil pipeline;

[0027] Figure 8 It is a schematic diagram of a distance measuring instrument detecting a high pour point oil pipeline in a corrosion resistance detection device for high pour point oil pipelines of the present invention;

[0028] Figure 9 It is a schematic diagram of the working state of a corrosion resistance detection device for high pour point oil pipelines of the present invention in an arc-shaped high pour point oil pipeline;

[0029] Figure 10 It is a broken line schematic diagram of the distance data measured by the distance measuring instrument and the moving length of the driving wheel of the present invention.

[0030] In the figure:

[0031] 1. Equipment housing; 2. Cavity; 3. Central column; 4. Turntable;

[0032] 5. Current adjustment unit; 51. Arc plate; 52. Contact rod; 53. Sleeve; 54. Return spring; 57. Resistor; 58. First terminal; 59. Second terminal; 510. Sliding joint;

[0033] 6. Driving unit; 61. Connecting seat; 62. Connecting plate; 63. End plate; 64. Spring rod; 65. Driving wheel; 66. Driving motor; 67. Electromagnetic powder brake;

[0034] 7. Distance measuring motor; 8. Rangefinder; 9. Mobile power supply; 10. Limit block; 11. Limit rod;

[0035] 100. High - viscosity oil pipeline. Detailed implementation manners

[0036] To make the invention objectives, features, and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0037] Embodiment:

[0038] As Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 shown, a corrosion - resistance performance detection device for a high - viscosity oil pipeline includes a device housing 1. There is a cavity 2 inside the device housing 1. A central column 3 is rotatably connected inside the cavity 2 through a bearing. Two current adjustment units 5 are symmetrically arranged on the central column 3;

[0039] Among them, the current adjustment unit 5 includes an arc plate 51. The arc plate 51 is arranged on one side of the central column 3. One side of the arc plate 51 abuts against the movable abutting rod 52. A sliding joint 510 is provided at the lower end of the abutting rod 52. A resistor 57 abuts against the lower part of the sliding joint 510. One end of the resistor 57 away from the arc plate 51 is connected to the electromagnetic powder brake 67 through an electric circuit. The electromagnetic powder brake 67 is fixedly connected to the shaft of the driving wheel 65. When the central column 3 rotates, it drives the arc plate 51 to squeeze the abutting rod 52, so that the abutting rod 52 drives the sliding joint 510 to adjust the size of the resistor 57 connected, and then controls the input current of the electromagnetic powder brake 67 to adaptively adjust the rotation speed of the driving wheel 65. In the closed loop formed by the mobile power source 9, the second connection terminal 59, the resistor 57, the first connection terminal 58 and the electromagnetic powder brake 67, the magnitude of the current is controlled by the length of the connected resistor 57, so as to control the magnetic magnitude in the electromagnetic powder brake 67, and the viscosity of the powder is controlled by the magnetic field to realize the function of adjusting the speed of the driving wheel 65.

[0040] A turntable 4 is fixedly connected to the middle of the central column 3, and an arc plate 51 is fixedly connected to the turntable 4.

[0041] One end of the abutting rod 52 away from the arc plate 51 slides and extends into the sleeve 53. The sleeve 53 is fixedly connected to the side wall of the cavity 2. The abutting rod 52 is fixedly connected to the sleeve 53 through a return spring 54.

[0042] The resistor 57 is fixedly connected to the side wall of the cavity 2. One end of the resistor 57 away from the turntable 4 is fixedly connected with a first connection terminal 58, and a second connection terminal 59 is fixedly connected to the sliding joint 510.

[0043] The first connection terminal 58 is connected to the electromagnetic powder brake 67 through an electric circuit, and the second connection terminal 59 is connected to the mobile power source 9 through an electric circuit, forming a closed loop of the mobile power source 9, the second connection terminal 59, the resistor 57, the first connection terminal 58 and the electromagnetic powder brake 67.

[0044] A limiting rod 11 is fixedly connected to the central column 3. Limiting blocks 10 are arranged on both sides of the limiting rod 11, and the limiting blocks 10 are fixedly connected to the bottom of the cavity 2. The limiting rod 11 and the limiting blocks 10 are used to prevent the relative rotation of the central column 3 and the equipment shell 1 from exceeding the adjustment range.

[0045] First of all, it is necessary to understand that the driving motor 66 of the driving unit 6 drives the driving wheel 65 to rotate at the same speed. The driving motor 66 is powered by the mobile power source 9. For the high pour point oil pipeline 100 of the pipeline to be measured, this device is installed according to Figure 7It is installed in the high - pour - point oil pipeline 100 in the indicated direction, so that the device is in a horizontal state, and the driving wheel 65 with the electromagnetic powder brake 67 fits against the left and right side walls of the high - pour - point oil pipeline 100. This device is applicable to detecting the internal corrosion condition of the horizontally installed high - pour - point oil pipeline 100.

[0046] In this embodiment, as Figure 7 shown, when this device detects the straight - type high - pour - point oil pipeline 100, since the inner - wall lengths of the upper, lower, left, and right positions in the straight - type high - pour - point oil pipeline 100 are the same, and at the same time the rotational speed of the driving wheel 65 is the same, the equipment housing 1 has been moving at a constant speed, and the cross - section of the equipment housing 1 and the high - pour - point oil pipeline 100 has always remained parallel. As Figure 9 shown, when in the bent high - pour - point oil pipeline 100, since the rotational speed of the driving wheel 65 is the same, the inner - wall length of one side among the left and right sides in the high - pour - point oil pipeline 100 is shorter than that of the other side (the path of the bent high - pour - point oil pipeline 100 can be regarded as a semi - circle, and it can be known that the distance of the inner wall of the pipeline on the side closer to the center is shorter), and because the rotational speed of the driving wheel 65 is the same, it causes the equipment housing 1 to be inclined as Figure 9 shown. The equipment housing 1 will deflect relative to the central column 3, causing the equipment housing 1 to drive the distance - measuring instrument 8 to deflect, so that the distance - measuring instrument 8 cannot measure an effective distance (because after the distance - measuring instrument 8 deflects, the cross - section of the distance - measuring instrument 8 and the high - pour - point oil pipeline 100 is not parallel, and the measured data is not the radius data of the high - pour - point oil pipeline 100, so it cannot be used as a judgment basis).

[0047] According to the above - mentioned process, when the equipment housing 1 and the central column 3 rotate relative to each other, the turntable 4 on the central column 3 drives the arc - shaped plate 51 to squeeze the abutting rod 52. The abutting rod 52 slides into the sleeve 53 and compresses the return spring 54. When the abutting rod 52 slides in, it drives the sliding joint 510 to move. The sliding joint 510 moves on the resistor 57. Since the mobile power source 9, the second connection terminal 59, the resistor 57, the first connection terminal 58, and the electromagnetic powder brake 67 form a closed circuit, the distance that the sliding joint 510 moves on the resistor 57 determines the size of the resistor 57 connected in this circuit (in the initial state, the resistor 57 is fully connected, and the formed current is extremely small, so in the initial state, the electromagnetic powder brake 67 has no decelerating effect on the driving wheel 65), thus determining the size of the current, and further determining the deceleration intensity of the electromagnetic powder brake 67 on the driving wheel 65. By decelerating the driving wheel 65 on the shorter - side path in the high - pour - point oil pipeline 100 through the electromagnetic powder brake 67, the equipment housing 1 will not be inclined and remains parallel to the cross - section of the high - pour - point oil pipeline 100, so that the distance - measuring instrument 8 can measure the radius distance of the high - pour - point oil pipeline 100 at each moment.

[0048] During the above process, when the difference in the path distance between the inner walls of the left and right pipelines where this device operates is greater (depending on the size of the bend), the inclination is more severe. Therefore, the relative rotation between the central column 3 and the device housing 1 is greater, causing the arc-shaped plate 51 to push the abutting rod 52 by a greater distance. As a result, the abutting rod 52 drives the sliding joint 510 to move a greater distance, thereby reducing the resistance value of the resistance 57 in the access circuit. Consequently, the current acting on the electromagnetic powder brake 67 is greater, enabling the electromagnetic powder brake 67 to better limit the speed of the drive wheel 65. Thus, the drive wheel 65 can be made to reduce its speed more quickly, and the problem of the device housing 1 tilting can be solved more quickly.

[0049] In summary, the current adjustment unit 5 can adjust the speed limit intensity of the electromagnetic powder brake 67 acting on the drive wheel 65 by means of the inclination degree of the device housing 1, mobilizing the arc-shaped plate 51, the abutting rod 52, and the resistance 57, thereby adaptively controlling the speed of the drive wheel 65, quickly solving the problem of the device housing 1 tilting, and enabling the rangefinder 8 to measure correct data.

[0050] As Figure 1 、 Figure 2 and Figure 3 shown, four drive units 6 are provided on the outer side of the device housing 1. The drive unit 6 includes a connecting seat 61. A connecting plate 62 is detachably connected to the connecting seat 61. An end plate 63 is fixedly connected to the end of the connecting plate 62. A drive wheel 65 is installed at the end of the end plate 63 through a spring rod 64. The drive wheel 65 is driven by a drive motor 66.

[0051] The connecting plate 62 is selectively replaced according to the current high-coagulating oil pipeline 100, so as to be able to match the radius of the currently measured high-coagulating oil pipeline 100. When the radius of the high-coagulating oil pipeline 100 is too large, it can be matched by replacing the connecting plate 62 with a longer one.

[0052] The drive units 6 that are symmetrically arranged up and down in the device housing 1 are fixedly connected to the upper and lower ends of the central column 3 through the connecting seat 61. The drive units 6 that are symmetrically arranged left and right in the device housing 1 are respectively fixedly connected to the left and right sides of the device housing 1 through the connecting seat 61. As Figure 7 shown, the drive wheels 65 in the left and right two drive units 6 are in contact with the left and right sides of the high-coagulating oil pipeline 100, and the drive wheels 65 of the drive units 6 that are symmetrically arranged up and down are in contact with the upper and lower sides of the high-coagulating oil pipeline 100.

[0053] In this embodiment, the drive motors 66 in the four drive units 6 are powered by a mobile power source 9. The drive motors 66 maintain the same rotational speed, driving the drive wheels 65 to rotate at the same speed. The drive wheels 65 drive the device housing 1 to move uniformly in the high-coagulating oil pipeline 100.

[0054] As Figure 2 and Figure 8As shown in the figure, a distance measuring motor 7 is fixedly connected to one side of the device housing 1, and a distance measuring instrument 8 is fixedly connected to the output shaft of the distance measuring motor 7.

[0055] In this embodiment, when the device housing 1 moves at a constant speed, the distance measuring motor 7 rotates at a high speed, and at the same time drives the distance measuring instrument 8 to rotate at a high speed. The distance measuring line of the distance measuring instrument 8 is as Figure 8 shown. The distance measuring instrument 8 transmits the distance data measured at each moment to an external terminal (the measured distance data is the distance from the distance measuring instrument 8 to the inner wall of the highly viscous oil pipeline 100), and at the same time generates a broken line graph as shown in Figure 9 shown with the moving distance of the driving wheel 65 (the moving distance of the driving wheel 65 can be obtained from data such as the rotation speed and driving time of the driving motor 66). Among them, R is the distance measured by the distance measuring instrument 8, and L is the moving distance of the device housing 1. If the inner wall of the highly viscous oil pipeline 100 is smooth and the radius of the highly viscous oil pipeline 100 remains unchanged, then the distance measured by the distance measuring instrument 8 should be the same, so a straight line is formed in the broken line graph. If the distance measured by the distance measuring instrument 8 changes, for example, the inner wall of the highly viscous oil pipeline 100 is corroded, forming concave or protruding corrosion scars, it will cause the distance measured by the distance measuring instrument 8 to change, thus forming Figure 9 fluctuations in the straight line in . The degree of corrosion can be judged by the size of the fluctuations, and at the same time, the position of corrosion in the highly viscous oil pipeline 100 can be judged by the L value corresponding to the fluctuation position in the straight line.

[0056] The working process is as follows:

[0057] First, as shown in Figure 7 the figure, place the device in the highly viscous oil pipeline 100 to be detected. It should be noted that when the device detects a straight-type highly viscous oil pipeline 100, since the inner wall lengths of the upper, lower, left, and right positions in the straight-type highly viscous oil pipeline 100 are the same, the driving motor 66 in the four driving units 6 is powered by the mobile power source 9. The driving motor 66 maintains the same rotation speed, drives the driving wheel 65 to rotate at the same speed, and the driving wheel 65 drives the device housing 1 to move at a constant speed in the highly viscous oil pipeline 100. Therefore, the device housing 1 is always moving at a constant speed, and the cross-section of the device housing 1 and the highly viscous oil pipeline 100 always remains parallel. When the device housing 1 moves at a constant speed, the distance measuring motor 7 rotates at a high speed, and at the same time drives the distance measuring instrument 8 to rotate at a high speed. The distance measuring instrument 8 transmits the distance data measured at each moment to an external terminal, and at the same time generates a broken line graph as shown in Figure 9 shown. If the inner wall of the highly viscous oil pipeline 100 is smooth and the radius of the highly viscous oil pipeline 100 remains unchanged, then the distance measured by the distance measuring instrument 8 should be the same, so a straight line is formed in the broken line graph. If the distance measured by the distance measuring instrument 8 changes, for example, the inner wall of the highly viscous oil pipeline 100 is corroded, forming concave or protruding corrosion scars, it will cause the distance measured by the distance measuring instrument 8 to change, thus formingFigure 9 The fluctuations in the straight line can be used to judge the degree of corrosion by the magnitude of the fluctuations. At the same time, the position of corrosion in the high pour point oil pipeline 100 can be judged by the L value corresponding to the position of the fluctuations in the straight line. In this process, as Figure 9 shown, when in the bent high pour point oil pipeline 100, since the rotational speeds of the driving wheels 65 are the same, the inner wall length of one side of the left and right sides in the high pour point oil pipeline 100 is shorter than that of the other side. And because the rotational speeds of the driving wheels 65 are the same, it causes the inclination of the equipment housing 1 as Figure 9 shown. The equipment housing 1 will deflect relative to the central column 3, causing the equipment housing 1 to drive the rangefinder 8 to deflect, making the rangefinder 8 unable to measure an effective distance. At this time, when the equipment housing 1 and the central column 3 rotate relative to each other, the turntable 4 on the central column 3 drives the arc plate 51 to squeeze the abutting rod 52. The abutting rod 52 slides into the sleeve 53 and compresses the return spring 54. When the abutting rod 52 slides in, it drives the sliding joint 510 to move. The sliding joint 510 moves on the resistor 57. Since the mobile power supply 9, the second connection terminal 59, the resistor 57, the first connection terminal 58, and the electromagnetic powder brake 67 form a closed circuit, the distance that the sliding joint 510 moves on the resistor 57 determines the size of the resistor 57 connected in this circuit, thereby determining the magnitude of the current, and further determining the deceleration intensity of the electromagnetic powder brake 67 on the driving wheel 65. By decelerating the driving wheel 65 on the shorter side path in the high pour point oil pipeline 100 through the electromagnetic powder brake 67, the equipment housing 1 will not tilt and remains parallel to the cross-section of the high pour point oil pipeline 100, so that the rangefinder 8 can measure the radius distance of the high pour point oil pipeline 100 at each moment.

[0058] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. An anti-corrosion performance detection device for high pour point oil pipelines, comprising a device housing (1), and a cavity (2) is provided inside the device housing (1), characterized in that, A central column (3) is rotatably connected within a cavity (2) by means of bearings, and two current adjustment units (5) are symmetrically provided on the central column (3); Among them, the current adjustment unit (5) includes an arc-shaped plate (51). The arc-shaped plate (51) is provided on one side of the central column (3). One side of the arc-shaped plate (51) abuts against a movable abutting rod (52). A sliding joint (510) is provided at the lower end of the abutting rod (52). A resistor (57) abuts below the sliding joint (510). One end of the resistor (57) away from the arc-shaped plate (51) is connected to an electromagnetic powder brake (67) through an electric circuit. The electromagnetic powder brake (67) is fixedly connected to the shaft of a drive wheel (65). When the central column (3) rotates, it drives the arc-shaped plate (51) to squeeze the abutting rod (52), so that the abutting rod (52) drives the sliding joint (510) to adjust the size of the resistor (57) connected in, and further controls the input current of the electromagnetic powder brake (67) to adaptively adjust the rotational speed of the drive wheel (65).

2. The high pour point oil pipeline anti-corrosion performance detection device as described in claim 1, characterized in that, A turntable (4) is fixedly connected to the middle of the central column (3), and an arc-shaped plate (51) is fixedly connected to the turntable (4).

3. The high pour point oil pipeline anti-corrosion performance detection device as described in claim 2, characterized in that, One end of the abutting rod (52) away from the arc-shaped plate (51) slides and extends into a sleeve (53). The sleeve (53) is fixedly connected to the side wall of the cavity (2). The abutting rod (52) is fixedly connected to the sleeve (53) through a return spring (54).

4. The high pour point oil pipeline anti-corrosion performance detection device according to claim 3, characterized in that, The resistor (57) is fixedly connected to the side wall of the cavity (2). One end of the resistor (57) away from the turntable (4) is fixedly connected with a first connection terminal (58), and a second connection terminal (59) is fixedly connected to the sliding joint (510).

5. The high pour point oil pipeline anti-corrosion performance detection device according to claim 4, characterized in that, The first connection terminal (58) is connected to the electromagnetic powder brake (67) through an electric circuit, and the second connection terminal (59) is connected to a mobile power source (9) through an electric circuit, forming a closed loop of the mobile power source (9), the second connection terminal (59), the resistor (57), the first connection terminal (58) and the electromagnetic powder brake (67).

6. The high pour point oil pipeline anti-corrosion performance detection device as described in claim 5, wherein Four drive units (6) are provided on the outer side of the equipment housing (1). The drive unit (6) includes a connection seat (61). A connecting plate (62) is detachably connected to the connection seat (61). An end plate (63) is fixedly connected to the end of the connecting plate (62). A drive wheel (65) is installed at the end of the end plate (63) through a spring rod (64). The drive wheel (65) is driven by a drive motor (66).

7. The high pour point oil pipeline anti-corrosion performance detection device according to claim 6, characterized in that, The connecting plate (62) is selectively replaced according to the current high-viscosity oil pipeline (100), so as to be able to match the radius of the currently measured high-viscosity oil pipeline (100).

8. The high pour point oil pipeline anti-corrosion performance detection device as described in claim 7, characterized in that, The upper and lower symmetric drive units (6) in the equipment housing (1) are fixedly connected to the upper and lower ends of the central column (3) through the connection seat (61). The left and right symmetric drive units (6) in the equipment housing (1) are respectively fixedly connected to the left and right sides of the equipment housing (1) through the connection seat (61).

9. The high pour point oil pipeline anti-corrosion performance detection device as described in claim 7, characterized in that, A distance measuring motor (7) is fixedly connected to one side of the equipment housing (1), and a distance measuring instrument (8) is fixedly connected to the output shaft of the distance measuring motor (7).

10. The high pour point oil pipeline anti-corrosion performance detection device as described in claim 1, characterized in that, A limiting rod (11) is fixedly connected to the central column (3), and limiting blocks (10) are arranged on both sides of the limiting rod (11). The limiting blocks (10) are fixedly connected to the bottom of the cavity (2).

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