Pipeline corrosion detection device and pipeline corrosion detection method

Abstract

The present invention discloses a pipeline corrosion detection device and a pipeline corrosion detection method. The pipeline corrosion detection device includes a detection component, a clamping component, a moving component and a driving component. The detection component includes a detection ring, and the detection ring is provided with a plurality of first detection parts and a plurality of second detection parts. The clamping component includes a supporting mechanism and a clamping mechanism, and a clamping plate is provided in the clamping mechanism. The moving component includes a moving block and a moving rail. The driving component includes a first driving rod and a connecting member, and the clamping plate can clamp the detection ring from both sides of the detection ring. The pipeline corrosion detection method includes clamping the detection ring, passing the detection ring through the pipeline, and inputting the data detected by the first detection part and the second detection part into a terminal in real time. By adopting the present invention, the corrosion condition of the pipeline can be detected outside the pipeline, and the detection is comprehensive and can be reused.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline detection, and in particular to a pipeline corrosion detection device and a pipeline corrosion detection method. Background Art

[0002] Submarine pipelines are important equipment for transporting submarine oil and gas resources. If there are problems with submarine pipelines, major safety accidents and economic losses may occur. Due to the corrosion of seawater and its transportation medium, submarine pipelines are prone to defects such as wall thickness thinning after long-term use. Once the pipeline fails, it may have a huge impact on oil and gas transportation. In severe cases, it may cause oil and gas leakage and cause major accidents. Therefore, accurately assessing the corrosion status of the submarine pipeline wall and scientifically predicting the remaining life of the pipeline are of great significance to ensure the safe operation of the submarine pipeline and the normal production of oil and gas fields.

[0003] Currently, there is a pipeline corrosion detection device, which uses a detection ball to detect the corrosion and leakage of the pipeline. However, since the detection ball needs to be dropped into the pipeline along with the oil, gas and liquid in the pipeline for detection, it is easy to cause blockage of the pipeline and reduce the flow rate after the detection ball is dropped. In addition, there is a problem that the detection ball cannot be recovered, resulting in a waste of resources. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a pipeline corrosion detection device, which can detect the corrosion condition of the pipeline outside the pipeline, and the detection is comprehensive and can be reused.

[0005] The technical problem to be solved by the present invention is to provide a pipeline corrosion detection method, which can comprehensively detect the corrosion condition of the pipeline outside the pipeline, form relatively complete corrosion condition data, and help analyze the factors causing corrosion.

[0006] In order to solve the above technical problems, the present invention provides a pipeline corrosion detection device for detecting the corrosion condition of the pipeline, including a detection component, a clamping component, a moving component and a driving component. The detection component includes a detection ring, which can be sleeved on the outside of the pipeline. The detection ring is provided with a plurality of first detection members and a plurality of second detection members. The first detection members are distributed on the inner side of the circumference of the detection ring, and the second detection members are arranged on the side of the first detection member.

[0007] The clamping assembly includes a supporting mechanism and a clamping mechanism, one end of the clamping mechanism is connected to the supporting mechanism, and the other end is connected to the side of the detection ring. A clamping plate is provided in the clamping mechanism, and the clamping plate can clamp the detection ring.

[0008] The moving assembly comprises a moving block and a moving rail, wherein the moving block is connected to the supporting mechanism, the moving rail is parallel to the pipeline, and the moving block can drive the supporting mechanism to move within the moving rail.

[0009] The driving assembly includes a first driving rod and a connecting member, one end of the connecting member is connected to the first driving rod, and the other end is connected to the moving block, and the first driving rod can drive the moving block to move through the connecting member.

[0010] As an improvement of the above solution, the number of the first driving rods is two, and the two first driving rods are respectively located on two opposite sides of the detection ring, and the first driving rods are parallel to the pipeline.

[0011] Both ends of the movable rail are provided with positioning holes, and the number of the connecting members is 2. One end of the two connecting members is respectively wrapped around the two first driving rods, and the other end can pass through the positioning holes and be respectively connected to the two ends of the movable block.

[0012] As an improvement of the above-mentioned scheme, the clamping mechanism also includes a first clamping gear and a second clamping gear, one side of the first clamping gear is fixed to the side of the clamping plate close to the detection ring, and the other side is fixed to the side of the second clamping gear, the first clamping gear and the second clamping gear are coaxially arranged, and the upper side of the first clamping gear and the upper side of the second clamping gear can clamp the side of the detection ring.

[0013] A first tooth portion and a second tooth portion are also fixed on the circumference of the detection ring. The first clamping gear can mesh with the first tooth portion, the second clamping gear can mesh with the second tooth portion, and the side of the first clamping gear can clamp the side of the second tooth portion.

[0014] As an improvement of the above-mentioned solution, a limiting protrusion is provided on the clamping plate, and the limiting protrusion protrudes toward the direction of the detection ring. A limiting ring groove is provided on the detection ring, and the limiting ring groove is coaxially arranged with the detection ring and can accommodate the limiting protrusion. The limiting protrusion can limit the rotation path of the limiting ring groove.

[0015] As an improvement of the above-mentioned scheme, the driving assembly also includes a rotating connecting rod and a second driving rod, the second driving rod is arranged on the side of the first driving rod, one end of the rotating connecting rod is connected to the second driving rod, the second driving rod can drive the rotating connecting rod to rotate, the rotating connecting rod is provided with a threaded groove, the rotating connecting rod can engage with the first clamping gear, and the rotating connecting rod can drive the first clamping gear to rotate.

[0016] As an improvement of the above scheme, an avoidance hole is provided on the clamping plate, and the avoidance hole is vertically arranged in the length direction. The rotating connecting rod can pass through the avoidance hole and connect with the first clamping gear, and the second driving rod can drive the rotating connecting rod to engage or disengage with the first clamping gear.

[0017] As an improvement of the above solution, the number of the clamping mechanisms is two, and the two clamping mechanisms are respectively arranged on both sides of the detection ring.

[0018] The support mechanism comprises a support rod, the upper end of which is respectively connected to the two clamping mechanisms, each of which is provided with two clamping plates, and the two clamping plates are respectively arranged on two opposite sides of the detection ring.

[0019] As an improvement of the above scheme, the clamping mechanism also includes an elastic member, a reset rod and a locking member, the reset rod can pass through the two clamping plates, the elastic member is sleeved on the reset rod and arranged between the two clamping plates, the locking member is arranged at one end of the reset rod and located on the outer side of the clamping plate, the reset rod is provided with a thread, and the locking member can be connected to the reset rod through the thread.

[0020] In order to solve the above technical problems, the present invention also provides a pipeline corrosion detection method, comprising the following steps:

[0021] Using a clamping plate to clamp the detection ring, and using a locking member to lock the clamping plate;

[0022] Insert the moving block into the moving rail, pass one end of the connecting piece through the positioning hole to connect with the moving block, and wrap the other end around the first driving rod;

[0023] Pass the detection ring through the pipeline, start the first driving rod to rotate, the first driving rod drives the detection ring to move along the length direction of the pipeline, the length wall thickness data of the pipeline along the length direction is detected in real time by the first detection component, and the seawater parameter information is detected in real time by the second detection component;

[0024] The length, wall thickness data and seawater parameter information detected by the first detection member and the second detection member are input into the terminal in real time. The terminal saves the length, wall thickness data and the seawater parameter information and outputs them as a plane data change image. The plane data change image takes the pipeline length as the horizontal axis and the length, wall thickness data or the seawater parameter as the vertical axis.

[0025] As an improvement to the above scheme, the following steps are also included:

[0026] The second driving rod is pulled upward to drive the rotating connecting rod to move upward and mesh with the first clamping gear. The first clamping wheel and the second clamping wheel are coaxially fixed. The second driving rod is started to rotate. The rotating connecting rod rotates accordingly and drives the first clamping gear and the second clamping gear to rotate.

[0027] When the first clamping gear and the second clamping gear rotate, the first tooth portion and the second tooth portion drive the detection to rotate around the central axis of the detection ring, and the first detection member and the second detection member can move in a circle along the wall of the pipeline. The first detection member detects the wall thickness data of the pipeline in real time, and the second detection member detects the seawater parameter information in real time.

[0028] Inputting the wall thickness data and seawater parameter information detected by the first detection member and the second detection member into the terminal in real time, the terminal saves the wall thickness data and the seawater parameter information, and outputs them as a plane data change image or a three-dimensional data change image;

[0029] The plane data change image has the pipeline circumferential angle as the horizontal axis and the circumferential wall thickness data or the seawater parameter as the vertical axis;

[0030] The three-dimensional data change image takes the pipeline circumferential angle as the x-axis, the length wall thickness data as the y-axis, and the circumferential wall thickness data or the seawater parameter as the z-axis.

[0031] The implementation of the present invention has the following beneficial effects:

[0032] The pipeline corrosion detection device of the present invention is provided with a detection component, a clamping component, a moving component and a driving component, wherein the detection component includes a detection ring, the detection ring can be set outside the pipeline, and the detection ring is provided with a plurality of first detection members, the first detection members can detect the wall thickness of the pipeline by ultrasonic wave, so as to obtain the wall thickness data of the pipeline, and the corrosion conditions of different positions of the pipeline can be analyzed by comparing the wall thickness data of the pipeline. In order to obtain more wall thickness data, the moving component includes a moving block and a moving rail, the clamping component includes a supporting mechanism and a clamping mechanism, the supporting mechanism is connected with the detection ring by the clamping mechanism, the supporting mechanism can move along the length direction of the pipeline on the moving rail through the moving block, and the driving component is used to drive the moving block, in the process of the detection ring moving along the length direction of the pipeline, the first detection member can detect the wall thickness data of the pipeline in the length direction in real time, so as to obtain the corrosion condition of the pipeline in the length direction, the more the first detection members are set, the closer the obtained wall thickness data is to the overall corrosion condition of the entire pipeline. Therefore, the pipeline corrosion detection device of the present invention can detect the corrosion condition of the pipeline outside the pipeline without entering the interior of the pipeline, and can be reused.

[0033] In addition, the clamping mechanism also includes a first clamping gear and a second clamping gear. The circumference of the detection ring is also provided with a first tooth portion and a second tooth portion. The first clamping gear can drive the first tooth portion to rotate, and the second clamping gear can drive the second tooth portion to rotate. The driving assembly also includes a rotating connecting rod and a second driving rod. The second driving rod can drive the first clamping gear and the second clamping gear to rotate through the rotating connecting rod, and then drive the detection ring to rotate through the first tooth portion and the second tooth portion. During the rotation process, the first detection component can detect the wall thickness change of the pipeline in the circumferential direction in real time, thereby obtaining the corrosion condition of the pipeline in the circumferential direction. Combined with the corrosion condition of the pipeline in the length direction, more comprehensive corrosion information can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of the pipeline corrosion detection device of the present invention;

[0035] Figure 2 yes Figure 1 Partial diagram of A in the figure;

[0036] Figure 3 It is a schematic diagram of the combined structure of the detection component and the clamping component of the present invention. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that the directional terms such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and are not specific limitations of the present invention.

[0038] See also Figure 1 The embodiment of the present invention discloses a pipeline 5 corrosion detection device for detecting the corrosion condition of the pipeline 5, including a detection component 1, a clamping component 2, a moving component 3 and a driving component 4. The detection component 1 includes a detection ring 11, and the detection ring 11 can be sleeved outside the pipeline 5. The detection ring 11 is provided with a plurality of first detection members 12 and a plurality of second detection members 13. The first detection members 12 are evenly distributed on the inner side of the circumference of the detection ring 11 and face the center of the detection ring 11. The second detection members 13 are arranged on the side of the first detection member 12.

[0039] The first detection member 12 is used to detect the wall thickness data of the pipe 5, and the second detection member 13 is used to detect the information of seawater. Specifically, the first detection member 12 detects the wall thickness of the pipe 5 by ultrasonic wave. The specific detection principle is as follows: when a sound wave encounters another medium during propagation in one medium, it will be partially reflected, that is, it will be partially reflected at the interface of two different propagation media. Therefore, when detecting the wall thickness, the first detection member 12 first emits ultrasonic waves on the outer wall of the pipe 5 in a direction perpendicular to the outer wall of the pipe 5. When the ultrasonic wave encounters the outer wall of the pipe 5, it will be reflected for the first time. The reflected ultrasonic wave can be received by the first detection member 12, and the unreflected part of the ultrasonic wave continues to propagate in the material of the pipe 5 along the wall thickness direction. When the ultrasonic wave leaves the inner wall of the pipe 5 and enters the inner cavity of the pipe 5, the ultrasonic wave will be reflected for the second time. The reflected ultrasonic wave will return to the first detection member 12 along the wall thickness direction, so that the time difference of the two ultrasonic wave reflections is obtained. The time difference is the time for the ultrasonic wave to experience the wall thickness twice. According to the propagation speed of the ultrasonic wave in the material of the pipe 5, the wall thickness can be calculated, thereby obtaining the wall thickness information. The second detection element 13 can detect seawater information, specifically one or more parameters of seawater dissolved oxygen value, seawater corrosion potential, seawater conductivity, seawater pH value, seawater flow rate, seawater salinity and seawater temperature. Through the simultaneous detection of the first detection element 12 and the second detection element 13, the corrosion condition of the pipeline 5 can be associated with the relevant parameters of the seawater, which is helpful for analyzing and studying the causes of corrosion and subsequent protection measures.

[0040] The clamping assembly 2 includes a supporting mechanism 21 and a clamping mechanism 22. One end of the clamping mechanism 22 is connected to the supporting mechanism 21, and the other end is connected to the side of the detection ring 11. The clamping mechanism 22 is provided with a clamping plate 221. When in use, the clamping plate 221 can clamp the detection ring 11 from both sides of the detection ring 11, so as to fix the relative position between the detection ring 11 and the pipeline 5. The moving assembly 3 includes a moving block 31 and a moving rail 32. The moving block 31 is connected to the supporting mechanism 21. The length direction of the moving rail 32 is parallel to the length direction of the pipeline 5. The moving block 31 can drive the supporting mechanism 21 to move in the moving rail 32. The supporting mechanism 21 can drive the detection ring 11 to move along the length direction of the pipeline 5, so that the first detection member 12 and the second detection member 13 can detect the wall thickness data of the pipeline 5 along the length direction and the seawater data in real time. In order to drive the moving block 31 to move, the driving assembly 4 includes a first driving rod 41 and a connecting member 42, one end of the connecting member 42 is connected to the first driving rod 41, and the other end is connected to the moving block 31. The first driving rod 41 can drive the moving block 31 to move through the connecting member 42. The first driving rod 41 can be an output shaft of a driving component with rotational motion characteristics such as a motor and a rotary cylinder, or it can be a driven shaft of a driving component. The first driving rod 41 can drive the connecting member 42 by rotation. The connecting member 42 can be a hard object or a soft object. When the connecting member 42 is a soft object, the connecting member 42 is preferably a steel rope, a rope or the like, which can respond to the rotational motion of the first driving rod 41 and drive the moving block 31 to move, so that the entire detection ring 11 can move following the moving block 31.

[0041] The first driving rod 41 and the connecting member 42 are provided to control the movement of the moving block 31 in order to isolate the electric driving part from the moving assembly 3. Since the corrosion detection device for the pipeline 5 needs to be placed in seawater to detect the pipeline 5, in order to ensure that the driving assembly 4 can operate normally and avoid water ingress and short circuit, the first driving rod 41 and the connecting member 42 are used as the connection between the electric driving part and the moving assembly 3, which can isolate the seawater from the electric driving part, thereby effectively avoiding water ingress and the like.

[0042] The pipeline 5 corrosion detection device of the embodiment of the present invention is provided with a detection component 1, a clamping component 2, a moving component 3 and a driving component 4, wherein the detection component 1 includes a detection ring 11, and the detection ring 11 can be sleeved outside the pipeline 5. The detection ring 11 is provided with a plurality of first detection members 12, and the first detection members 12 can detect the wall thickness of the pipeline 5 by ultrasonic wave, so as to obtain the wall thickness data of the pipeline 5. By comparing the wall thickness data of the pipeline 5, the corrosion conditions of different positions of the pipeline 5 can be analyzed. In order to obtain more wall thickness data, the moving component 3 includes a moving block 31 and a moving rail 32, and the clamping component 2 includes a supporting mechanism 21 and a clamping mechanism 22. The supporting mechanism 21 is connected to the detection ring 11 by means of the clamping mechanism 22. The supporting mechanism 21 can move along the length direction of the pipe 5 on the moving rail 32 through the moving block 31, and the driving component 4 is used to drive the moving block 31. During the movement of the detection ring 11 along the length direction of the pipe 5, the first detection member 12 can detect the wall thickness data of the pipe 5 in the length direction in real time, thereby obtaining the corrosion condition of the pipe 5 in the length direction. The more the first detection members 12 are set, the closer the obtained wall thickness data is to the overall corrosion condition of the entire pipe 5. Therefore, the corrosion detection device for pipe 5 of the present invention can detect the corrosion condition of the pipe 5 outside the pipe 5 without entering the inside of the pipe 5, and can be reused.

[0043] There are two first driving rods 41, which are respectively located at two opposite sides of the detection ring 11, preferably at the front side and the rear side of the detection ring 11 along the length direction of the pipe 5, and the length direction of the first driving rod 41 is parallel to the length direction of the pipe 5. Positioning holes 321 are provided at both ends of the moving rail 32, and there are two connecting members 42, which are preferably ropes. One end of the two connecting members 42 is respectively wound around the two first driving rods 41, and the other end can pass through the positioning holes 321 and be connected to the two ends of the moving block 31. When the first driving rod 41 rotates, the length of the connecting member 42 can change, thereby causing the moving block 31 to move, and the setting of the positioning holes 321 can prevent the connecting member 42 from tilting, thereby ensuring that the connecting member 42 can be stably wound around the first driving rod 41. The two first driving rods 41 rotate in opposite directions, so that when the length of the connecting member 42 on one side decreases or increases, the length of the connecting member 42 on the other side increases or decreases, thereby driving the moving block 31 to move.

[0044] As a further improvement of the above solution, in order to obtain more comprehensive corrosion information of the pipeline 5, in addition to real-time detection of the wall thickness data in the length direction, the wall thickness data in the circumferential direction of the pipeline 5 should also be detected. Figure 2 The clamping mechanism 22 also includes a first clamping gear 222 and a second clamping gear 223. The diameter of the first clamping gear 222 is larger than the diameter of the second clamping gear 223. One side of the first clamping gear 222 is fixed to one side of the clamping plate 221 close to the detection ring 11, and the other side is fixed to the side of the second clamping gear 223. The first clamping gear 222 and the second clamping gear 223 are coaxially arranged. When the first clamping gear 222 and the second clamping gear 223 rotate, they can drive the detection ring 11 to rotate around the central axis of the detection ring 11, so that the first detection member 12 and the second detection member 13 can rotate relative to the circumferential wall of the pipeline 5. The first detection member 12 and the second detection member 13 can respectively detect the wall thickness data and seawater data at various locations on the circumference of the pipeline 5. Combined with the wall thickness data and seawater data at various locations along the length direction of the pipeline 5, a more comprehensive and three-dimensional data combination can be obtained.

[0045] In addition, the upper side portion of the first clamping gear 222 and the upper side portion of the second clamping gear 223 can clamp the side portion of the detection ring 11. The first clamping gear 222 and the second clamping gear 223 can not only play a transmission role, but also can clamp the detection ring 11 by pressing the side portion of the detection ring 11 with the upper side portion. Since gear transmission is used, when the side portions of the first clamping gear 222 and the second clamping gear 223 clamp the detection ring 11, it will not have much influence on the rotation of the first clamping gear 222 and the second clamping gear 223.

[0046] See also Figure 3In order to cooperate with the first clamping gear 222 and the second clamping gear 223, the circumference of the detection ring 11 is further provided with a first tooth portion 111 and a second tooth portion 112. The first tooth portion 111 protrudes from the side of the second tooth portion 112. The first clamping gear 222 can mesh with the first tooth portion 111 and can drive the first tooth portion 111 to rotate. The second clamping gear 223 can mesh with the second tooth portion 112 and can drive the second tooth portion 112 to rotate. The first clamping gear 222 and the second clamping gear 223 can rotate at the same time and respectively drive the first tooth portion 111 and the second tooth portion 112 to rotate, thereby rotating the detection ring 11. The first tooth portion 111 and the second tooth portion 112 can drive the detection ring 11 to rotate, and the side of the first clamping gear 222 can press the side of the second tooth portion 112, thereby pressing the detection ring 11.

[0047] In order to ensure that the detection ring 11 does not deviate during the rotation process and maintain the distance from the wall of the pipe 5, a limiting protrusion 224 is provided on the clamping plate 221, and the limiting protrusion 224 protrudes toward the direction of the detection ring 11. The detection ring 11 is provided with a limiting ring groove 113, and the limiting ring groove 113 is coaxially arranged with the detection ring 11 and can accommodate the limiting protrusion 224. The limiting protrusion 224 can be inserted into the limiting ring groove 113. When the first tooth portion 111 and the second tooth portion 112 drive the detection ring 11 to rotate, the limiting protrusion 224 can limit the rotation path of the limiting ring groove 113, thereby avoiding the position deviation of the detection ring 11.

[0048] In order to drive the first pressing gear 222 and the second pressing gear 223, the driving assembly 4 further includes a rotating connecting rod 43 and a second driving rod 44. The second driving rod 44 is arranged on the side of the first driving rod 41. One end of the rotating connecting rod 43 is connected to the second driving rod 44. The second driving rod 44 can drive the rotating connecting rod 43 to rotate around the axis of the rotating connecting rod 43. The rotating connecting rod 43 is provided with a thread groove. The rotating connecting rod 43 can mesh with the first pressing gear 222 by means of the thread groove. The rotating connecting rod 43 can drive the first pressing gear 222 and the second pressing gear 223 to rotate. The second driving rod 44 and the rotating connecting rod 43 are also provided to isolate the first pressing gear 222 and the second pressing gear 223 from the external electric driving part to meet the waterproof requirement. The second driving rod 44 can be the output shaft of a driving component with rotational motion characteristics such as a motor and a rotary cylinder, or it can be the driven shaft of the driving component. The second driving rod 44 can drive the rotating connecting rod 43 to rotate by rotating, and drive the first clamping gear 222 and the second clamping gear 223 through the thread on the rotating connecting rod 43.

[0049] The clamping mechanism 22 is arranged on the front and rear sides of the detection ring 11, so the first clamping gear 222 and the second clamping gear 223 are both arranged on both sides of the detection ring 11, and the first tooth portion and the second tooth portion 112 are both arranged on both sides of the detection ring 11. The first clamping gear 222 and the second clamping gear 223 on both sides can form a gap, and the gap is "T" shaped. The first tooth portion 111 and the second tooth portion 112 located on both sides of the detection ring 11 can be inserted into the gap, and the first clamping gear 222 and the second clamping gear 223 can use the gap to clamp the first tooth portion 111 and the second tooth portion 112.

[0050] The detection ring 11 can move along the length direction of the pipe 5 alone, can also rotate around the circumference of the pipe 5 alone, or can move and rotate at the same time. In order to achieve the above effect, the clamping plate 221 is provided with an avoidance hole 225, and the avoidance hole 225 is vertically arranged in the length direction. The rotating connecting rod 43 can pass through the avoidance hole 225 and connect with the first clamping gear 222. The second driving rod 44 can drive the rotating connecting rod 43 to move vertically in the avoidance hole 225, so that the rotating connecting rod 43 and the first clamping gear 222 are engaged or separated. When the second driving rod 44 moves downward, the rotating connecting rod 43 separates from the first clamping gear 222, and the detection ring 11 The movement in the length direction of the pipe 5 will not be affected by the thread of the rotating connecting rod 43 and can move independently. When the second driving rod 44 moves upward, the rotating connecting rod 43 engages with the first clamping gear 222. When the first driving rod 41 stops rotating, the detection ring 11 can rotate independently. When the first driving rod 41 rotates, the detection ring 11 can simultaneously move along the length direction of the pipe 5 and rotate around the circumferential direction of the pipe 5, thereby simultaneously obtaining the wall thickness data of the pipe 5 in the length direction and the circumferential direction.

[0051] There are two clamping mechanisms 22, which are respectively arranged on both sides of the detection ring 11. Preferably, the two clamping mechanisms 22 are respectively located on the left and right sides of the length direction of the pipeline 5. The support mechanism 21 includes a support rod 211, and the upper ends of the support rods 211 are respectively connected to the two clamping mechanisms 22. Each clamping mechanism 22 is provided with two clamping plates 221, which are respectively arranged on opposite sides of the detection ring 11, and each clamping plate 221 is respectively provided with a first clamping gear 222 and a second clamping gear 223.

[0052] In order to ensure the normal use of the clamping plate 221, the clamping mechanism 22 also includes an elastic member 226, a reset rod 227 and a locking member 228. The reset rod 227 can pass through the two clamping plates 221. The elastic member 226 is sleeved on the reset rod 227 and is arranged between the two clamping plates 221. The locking member 228 is arranged at one end of the reset rod 227 and is located on the outer side of the clamping plate 221. The reset rod 227 is provided with a thread, and the locking member 228 can be connected to the reset rod 227 through a thread. During installation, first loosen the locking piece 228 to make the gap between the two clamping plates 221 larger than the width of the detection ring 11. After the detection ring 11 is inserted into the gap between the clamping plates 221, the first clamping gear 222 is meshed with the first tooth portion 111, and the second clamping gear 223 is meshed with the second tooth portion 112. Then, the locking piece 228 is used to reduce the gap between the two clamping plates 221, so that the first clamping gear 222 gradually presses the side of the detection ring 11 to form a clamping effect.

[0053] The embodiment of the present invention also discloses a pipeline corrosion detection method, which uses a pipeline 5 corrosion detection device to detect the pipeline 5. The pipeline 5 corrosion detection device includes a detection component 1, a clamping component 2, a moving component 3 and a driving component 4. The detection component 1 includes a detection ring 11. The detection ring 11 can be sleeved outside the pipeline 5. A first detection member 12 and a second detection member 13 are distributed on the circumference of the detection ring 11. The first detection member 12 is used to detect the wall thickness data of the pipeline 5, and the second detection member 13 is used to detect the information of seawater. The clamping component 2 includes a supporting mechanism 21 and a clamping mechanism 22. The supporting mechanism 21 is used to support the detection component 1, and the clamping mechanism 22 is used to fix the detection component 1. The clamping mechanism 22 includes a clamping plate 221, an elastic member 226, a reset rod 227 and a locking member 228. In order to enable the detection assembly 1 to detect the wall thickness of the pipe 5 along the length direction of the pipe 5, the moving assembly 3 includes a moving block 31 and a moving rail 32. The moving block 31 is connected to the support mechanism 21. The moving block 31 can drive the support mechanism 21 and the detection ring 11 to move. The driving assembly 4 includes a first driving rod 41, which is connected to the moving block 31 using a connecting piece 42. The moving rail 32 is provided with a positioning hole 321.

[0054] The pipeline corrosion detection method comprises the following steps:

[0055] The clamping plate 221 is used to clamp the detection ring 11 , and the locking member 228 is used to lock the clamping plate 221 .

[0056] Since the environment of the detection ring 11 is seawater, there are many factors in the seawater that affect the detection ring 11. In order to prevent the detection ring 11 from shifting and affecting the detection result, the detection ring 11 needs to be fixed. The locking member 228 and the elastic member 226 can provide sufficient pre-tightening force for the clamping plate 221, so that the clamping plate 221 can clamp the detection ring 11.

[0057] The moving block 31 is inserted into the moving rail 32 , one end of the connecting member 42 is passed through the positioning hole 321 and connected to the moving block 31 , and the other end is wound around the first driving rod 41 .

[0058] The first driving rod 41 controls the moving block 31 to move by rotating. During this process, the connecting member 42 is wound around the first driving rod 41, and the length thereof changes with the rotation of the first driving rod 41, thereby changing the distance between the moving block 31 and the first driving rod 41 to drive the detection ring 11 to move. The positioning hole 321 can straighten the connecting member 42 to prevent the connecting member 42 from drifting with the seawater or even getting stuck during winding or loosening.

[0059] The detection ring 11 is passed through the pipe 5, and the first driving rod 41 is started to rotate. The first driving rod 41 drives the detection ring 11 to move along the length direction of the pipe 5. The first detection component 12 detects the length wall thickness data of the pipe 5 along the length direction in real time, and the second detection component 13 detects seawater parameter information in real time.

[0060] The length, wall thickness data and seawater parameter information detected by the first detection member 12 and the second detection member 13 are input into the terminal in real time. The terminal saves the length, wall thickness data and the seawater parameter information, and outputs them as a plane data change image with the length of the pipeline 5 as the horizontal axis and the length, wall thickness data or the seawater parameter as the vertical axis. The data change image can reflect the relationship between the seawater parameters and the corrosion condition in the length direction of the pipeline 5. Therefore, it can not only reflect the corrosion condition of the pipeline 5, but also help to analyze and study the relationship between the corrosion condition and the seawater parameters.

[0061] In addition, the clamping mechanism 22 further includes a first clamping gear 222 and a second clamping gear 223. The circumference of the detection ring 11 is further provided with a first tooth portion 111 and a second tooth portion 112. The first clamping gear 222 can mesh with the first tooth portion 111, and the second clamping gear 223 can mesh with the second tooth portion 112. The first clamping gear 222 and the second clamping gear 223 are coaxially arranged. When the first clamping gear 222 and the second clamping gear 223 rotate, they can drive the detection ring 11 to rotate around the central axis of the detection ring 11, so that the first detection member 12 and the second detection member 13 can rotate relative to the circumferential wall of the pipe 5. The driving assembly 4 further includes a rotating connecting rod 43 and a second driving rod 44. The rotating connecting rod 43 is coaxially connected with the second driving rod 44. The second driving rod 44 can drive the rotating connecting rod 43 to mesh with or separate from the first clamping gear 222. When the second driving rod 44 moves downward, the rotating connecting rod 43 is separated from the first clamping gear 222, and the movement of the detection ring 11 in the length direction of the pipe 5 will not be affected by the thread of the rotating connecting rod 43, and can move independently. When the second driving rod 44 moves upward, the rotating connecting rod 43 is engaged with the first clamping gear 222. When the first driving rod 41 stops rotating, the detection ring 11 can rotate independently. When the first driving rod 41 rotates, the detection ring 11 can simultaneously move along the length direction of the pipe 5 and rotate around the circumference direction of the pipe 5, so as to simultaneously obtain the wall thickness data of the pipe 5 in the length direction and the circumference direction.

[0062] Under the action of the first pressing gear 222, the second pressing gear 223, the first tooth portion 111 and the second tooth portion 112, the detection ring 11 can also detect the wall thickness data of the pipe 5 in the circumferential direction alone, and can also be combined with the moving component 3 to detect the wall thickness data of the pipe 5 in the circumferential direction and the length direction at the same time. The specific steps are as follows:

[0063] The second driving rod 44 is pulled upward to drive the rotating connecting rod 43 to move upward and engage with the first clamping gear 222, and the second driving rod 44 is started to rotate. At this time, the rotating connecting rod 43 follows the rotation and drives the first clamping gear 222 and the second clamping gear 223 to rotate.

[0064] If the moving block 31 is stationary relative to the moving rail 32 at this time, the detection ring 11 only rotates in the circumferential direction of the pipe 5, and the first detection member 12 and the second detection member 13 can detect the wall thickness data of the pipe 5 in the circumferential direction.

[0065] If the moving block 31 moves relative to the moving rail 32 at this time, the detection ring 11 can rotate and move simultaneously, and the first detection member 12 and the second detection member 13 can simultaneously detect the wall thickness data of the pipe 5 in the circumferential direction and the length direction, thereby forming a comprehensive data combination.

[0066] While the first clamping gear 222 and the second clamping gear 223 rotate, the first tooth portion 111 and the second tooth portion 112 will drive the detection ring 11 to rotate around the central axis of the detection ring 11, and the first detection member 12 and the second detection member 13 can move circumferentially along the wall of the pipeline 5. The first detection member 12 detects the wall thickness data of the pipeline 5 along the circumferential direction in real time, and the second detection member 13 detects seawater parameter information in real time.

[0067] If the first driving rod 41 stops rotating at this time, that is, the moving block 31 is stationary relative to the moving rail 32 , then the first detecting member 12 only detects the wall thickness data of the pipe 5 along the circumferential direction.

[0068] If the first driving rod 41 rotates at the same time, the moving block 31 moves relative to the moving rail 32. At this time, the first detection member 12 detects the wall thickness data of the pipeline 5 along the circumferential direction and the wall thickness data of the pipeline 5 along the length direction. By combining the data of the two, more comprehensive and three-dimensional wall thickness data can be obtained, which is helpful to fully understand the corrosion condition of the pipeline 5 and is also conducive to analyzing the factors causing the corrosion.

[0069] The circumferential wall thickness data and the seawater parameter information detected by the first detection member 12 and the second detection member 13 are input into the terminal in real time, and the terminal saves the circumferential wall thickness data and the seawater parameter information.

[0070] If the moving block 31 is stationary relative to the moving rail 32 at this time, the terminal outputs the circumferential wall thickness data and the seawater parameter information as a plane data change image with the circumferential angle of the pipeline 5 as the horizontal axis and the circumferential wall thickness data or the seawater parameter as the vertical axis.

[0071] If the moving block 31 moves relative to the moving rail 32 at this time, the terminal outputs the length wall thickness data, the circumferential wall thickness data and the seawater parameter information as a three-dimensional data change image with the circumferential angle of the pipeline 5 as the x-axis, the length wall thickness data as the y-axis, and the circumferential wall thickness data or the seawater parameter as the z-axis. The three-dimensional data change image can more comprehensively reflect the relationship between the wall thickness of the pipeline 5 in the length direction and the wall thickness in the circumferential direction and the length, circumferential angle or the seawater parameter of the pipeline 5, and can provide more powerful support for subsequent corrosion analysis and protection research.

[0072] The above are preferred embodiments of the present invention. It should be noted that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A pipeline corrosion detection device, used to detect the corrosion of a pipeline, characterized in that: The invention comprises a detection component, a clamping component, a moving component and a driving component, wherein the detection component comprises a detection ring, the detection ring can be sleeved outside the pipeline, and the detection ring is provided with a plurality of first detection members and a plurality of second detection members, the first detection members are distributed on the inner side of the circumference of the detection ring, and the second detection members are provided on the side of the first detection member; The clamping assembly includes a supporting mechanism and a clamping mechanism, one end of the clamping mechanism is connected to the supporting mechanism, and the other end is connected to the side of the detection ring, and a clamping plate is provided in the clamping mechanism, and the clamping plate can clamp the detection ring; The moving assembly includes a moving block and a moving rail, the moving block is connected to the supporting mechanism, the moving rail is parallel to the pipeline, and the moving block can drive the supporting mechanism to move within the moving rail; The driving assembly includes a first driving rod and a connecting member, one end of the connecting member is connected to the first driving rod, and the other end is connected to the moving block, and the first driving rod can drive the moving block to move through the connecting member; The number of the first driving rods is two, and the two first driving rods are respectively located on two opposite sides of the detection ring, and the first driving rods are parallel to the pipeline; Both ends of the moving rail are provided with positioning holes, the number of the connecting members is 2, one end of the two connecting members is respectively wound around the two first driving rods, and the other end can pass through the positioning holes and be respectively connected to the two ends of the moving block; The clamping mechanism further includes a first clamping gear and a second clamping gear, one side of the first clamping gear is fixed to a side of the clamping plate close to the detection ring, and the other side is fixed to a side of the second clamping gear, the first clamping gear and the second clamping gear are coaxially arranged, and the upper side of the first clamping gear and the upper side of the second clamping gear can clamp the side of the detection ring; A first tooth portion and a second tooth portion are also fixed on the circumference of the detection ring, the first pressing gear can mesh with the first tooth portion, the second pressing gear can mesh with the second tooth portion, and the side portion of the first pressing gear can press the side portion of the second tooth portion; The driving assembly also includes a rotating connecting rod and a second driving rod, the second driving rod is arranged on the side of the first driving rod, one end of the rotating connecting rod is connected to the second driving rod, the second driving rod can drive the rotating connecting rod to rotate, and a threaded groove is provided on the rotating connecting rod. The rotating connecting rod can engage with the first clamping gear, and the rotating connecting rod can drive the first clamping gear to rotate.

2. The pipeline corrosion detection device according to claim 1, characterized in that: The clamping plate is provided with a limiting protrusion, which protrudes toward the direction of the detection ring. The detection ring is provided with a limiting ring groove, which is coaxially arranged with the detection ring and can accommodate the limiting protrusion. The limiting protrusion can limit the rotation path of the limiting ring groove.

3. The pipeline corrosion detection device according to claim 1, characterized in that: The clamping plate is provided with an avoidance hole, which is vertically arranged in the length direction. The rotating connecting rod can pass through the avoidance hole to connect with the first clamping gear, and the second driving rod can drive the rotating connecting rod to engage or separate with the first clamping gear.

4. The pipeline corrosion detection device according to claim 1, characterized in that: The number of the clamping mechanisms is 2, and the 2 clamping mechanisms are respectively arranged on both sides of the detection ring; The support mechanism comprises a support rod, the upper end of which is respectively connected to the two clamping mechanisms, each of which is provided with two clamping plates, and the two clamping plates are respectively arranged on two opposite sides of the detection ring.

5. The pipeline corrosion detection device according to claim 4, characterized in that: The clamping mechanism also includes an elastic member, a reset rod and a locking member. The reset rod can pass through the two clamping plates. The elastic member is sleeved on the reset rod and arranged between the two clamping plates. The locking member is arranged at one end of the reset rod and located on the outer side of the clamping plate. The reset rod is provided with a thread, and the locking member can be connected to the reset rod through the thread.

6. A detection method based on the pipeline corrosion detection device according to any one of claims 1 to 5, characterized in that: The following steps are involved: Using a clamping plate to clamp the detection ring, and using a locking member to lock the clamping plate; Insert the moving block into the moving rail, pass one end of the connecting piece through the positioning hole to connect with the moving block, and wrap the other end around the first driving rod; Pass the detection ring through the pipeline, start the first driving rod to rotate, the first driving rod drives the detection ring to move along the length direction of the pipeline, the length wall thickness data of the pipeline along the length direction is detected in real time by the first detection component, and the seawater parameter information is detected in real time by the second detection component; Inputting the length, wall thickness data and seawater parameter information detected by the first detection member and the second detection member into the terminal in real time, the terminal saves the length, wall thickness data and the seawater parameter information, and outputs them as a plane data change image, wherein the plane data change image takes the pipeline length as the horizontal axis and the length, wall thickness data or the seawater parameter as the vertical axis; The following steps are also included: The second driving rod is pulled upward to drive the rotating connecting rod to move upward and mesh with the first clamping gear, the first clamping gear is coaxially fixed with the second clamping gear, the second driving rod is started to rotate, the rotating connecting rod rotates with it and drives the first clamping gear and the second clamping gear to rotate; When the first clamping gear and the second clamping gear rotate, the first tooth portion and the second tooth portion drive the detection to rotate around the central axis of the detection ring, and the first detection member and the second detection member can move circumferentially along the wall of the pipeline. The first detection member detects the circumferential wall thickness data of the pipeline in real time, and the second detection member detects the seawater parameter information in real time; Inputting the circumferential wall thickness data and seawater parameter information detected by the first detection member and the second detection member into the terminal in real time, the terminal saves the circumferential wall thickness data and the seawater parameter information, and outputs them as a plane data change image or a three-dimensional data change image; The plane data change image has the pipeline circumferential angle as the horizontal axis and the circumferential wall thickness data or the seawater parameter as the vertical axis; The three-dimensional data change image takes the pipeline circumferential angle as the x-axis, the length wall thickness data as the y-axis, and the circumferential wall thickness data or the seawater parameter as the z-axis.

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