Three-dimensional measuring device for corrosion defects of inner and outer walls of pipeline
By designing a three-dimensional measuring device that includes a flexible chain, gears, and measuring units, the problems of low efficiency and poor accuracy in measuring corrosion defects on the inner and outer walls of oil and gas pipelines were solved, achieving efficient and accurate three-dimensional measurement results.
Patent Information
- Application Number
- CN202423288854.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-31
AI Technical Summary
In existing technologies, three-dimensional measurement methods for corrosion defects on the inner and outer walls of oil and gas pipelines are inefficient, have poor accuracy, are cumbersome to operate, and are difficult to repeat.
A three-dimensional measuring device was designed, comprising a first flexible chain, a second flexible chain, gears, a locking device, a pipe axial slide rail, and a measuring unit. Through the meshing transmission of the flexible chain and gears, combined with axial and circumferential scales, the measuring unit can move stably on the inner and outer walls of the pipe, and can be used in conjunction with a depth gauge or an ultrasonic thickness measuring unit for three-dimensional measurement.
It enables high-precision three-dimensional measurement of corrosion defects on the inner and outer walls of oil and gas pipelines, improving detection efficiency, reducing labor intensity, and simplifying the operation process.
Smart Images
Figure CN223678397U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to oil and gas pipeline detection technical field, concretely relates to a pipeline inner and outer wall corrosion defect three-dimensional measuring device. BACKGROUND
[0002] Oil and gas pipeline is the lifeline of national energy security, and the safety of oil and gas pipeline body is the current focus. The inspection method of oil and gas pipeline mainly includes external detection and internal detection. The external detection is to implement indirect detection on the pipeline by detecting the thermal insulation layer and the anticorrosion layer, cathodic protection system and other methods to find the possible defect position of the pipeline. The internal detection refers to the method of magnetic flux leakage or ultrasonic, which realizes the internal and external wall corrosion defect detection of the whole pipeline by running once from the upstream end to the downstream end of the pipeline with the help of detection robot. There is a certain error between the corrosion defects found by internal and external detection and the real size of the defects, and the defects need to be verified and measured.
[0003] Corrosion defects mainly include pipeline inner wall and outer wall defects, and are mainly volume type. At present, the means for measuring outer wall corrosion defects is depth ruler, which can measure the single point depth of defects. The means for measuring inner wall corrosion defects is ultrasonic thickness gauge, which can measure the single point wall thickness of defects. Neither of them can measure the overall depth distribution or wall thickness distribution of the area larger defects at one time. According to the standard, the method of drawing grid on the pipeline surface is mainly used for multi-point depth measurement or thickness measurement, and the overall situation of the defects is obtained. This method has the shortcomings of complicated operation, low efficiency, high labor intensity, large human error in drawing grid, difficult repetitive measurement and inability to generate defect overall profile at one time.
[0004] In order to solve the technical problems of low efficiency, poor precision and difficult repetitive measurement of the defect three-dimensional measurement method in the prior art, it is particularly necessary to develop a new type of pipeline inner and outer wall corrosion defect three-dimensional measurement device. UTILITY MODEL CONTENT
[0005] In view of the deficiencies in the prior art, the utility model aims to provide a pipeline inner and outer wall corrosion defect three-dimensional measurement device, which has reasonable structure design, convenient operation, realizes three-dimensional measurement of inner and outer wall corrosion defects of different pipe diameters, improves detection precision, improves detection efficiency, reduces labor intensity and is easy to popularize and use.
[0006] In order to achieve the above object, the utility model is through the following technical scheme to realize: a pipeline inner and outer wall corrosion defect three-dimensional measuring device, first flexible chain and second flexible chain, first gear, second gear, first locking device, second locking device, pipeline axial slide rail and measuring unit for fixed on the outer circumference of pipeline, the outer circumference of first flexible chain and second flexible chain is installed with first gear and second gear respectively, first gear and second gear are engaged with first flexible chain and second flexible chain respectively, first locking device and second locking device for locking chain are installed on first flexible chain and second flexible chain respectively, pipeline axial slide rail is installed between first gear and second gear, measuring unit is installed on pipeline axial slide rail and moves in the axial direction of pipeline along the slide rail.
[0007] As preferred, the two sides of the first flexible chain and the second flexible chain are provided with circumferential scales for measuring length, and the surface of the pipeline axial slide rail is marked with axial scales for measuring length. Through the circumferential scales and the axial scales, the moving step distance of the measuring unit in the circumferential and axial directions can be recorded and kept consistent, thereby realizing three-dimensional measurement.
[0008] As preferred, the first locking device and the second locking device are installed on the side edges of the first flexible chain and the second flexible chain respectively, and the first locking device and the second locking device are the same in structure and are both composed of a chain tension degree adjusting lock. The chain tension degree adjusting lock comprises a tensioning wheel, a locking buckle, a locking block, a fixing key, a connecting rod and a locking plate. The tensioning wheel is in transmission connection with the chain on the corresponding side, the shaft of the tensioning wheel is fixedly connected with the locking block through the connecting rod, the locking buckle is arranged on the two sides of the locking block, the locking buckle is installed on the locking plate through the pluggable fixing key, three adjustable locking positions are arranged on the locking buckle, and a lock head matched with the locking position is arranged on the locking block.
[0009] As preferred, the inner side surfaces of the first flexible chain and the second flexible chain are provided with anti-skid devices. The anti-skid devices adopt anti-skid silica gel points, which are uniformly distributed on the inner side surfaces of the chains and protrude from the chain bodies by 1-2 mm. The anti-skid devices can also adopt anti-skid strip grooves, which are uniformly arranged along the inner arms of the chains and protrude from the chain bodies by 1-2 mm. The surfaces of the anti-skid strip grooves are provided with irregular lines.
[0010] As preferred, the measuring unit adopts a depth ruler for measuring depth or an ultrasonic thickness measuring unit for measuring the wall thickness of the pipeline.
[0011] As preferred, the measuring unit is arranged on the pipeline axial slide rail through the shaft sleeve sliding, the surface of the pipeline axial slide rail is provided with a plurality of sliding grooves for the measuring unit sliding, the measuring unit is installed on the outer wall of the shaft sleeve, the inner wall of the shaft sleeve is provided with the ball, the ball is connected with the shaft sleeve body through the spring on the inner side, and the ball rolls in the sliding groove of the pipeline axial slide rail.
[0012] The device realizes three-dimensional measurement of the inner and outer wall corrosion defects of pipes with different diameters, is convenient to operate, greatly improves detection precision, reduces error, simultaneously improves detection efficiency, reduces labor intensity, is high in reliability, has wide application prospect and the like. BRIEF DESCRIPTION OF DRAWINGS
[0013] The utility model will be described in detail below in combination with the drawings and specific embodiments;
[0014] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;
[0015] Figure 2 It is Figure 1 The left view of the utility model;
[0016] Figure 3 It is the plane structure schematic diagram of the utility model;
[0017] Figure 4 It is the structure schematic diagram of the chain tension degree adjusting lock of the utility model;
[0018] Figure 5 It is the connection schematic diagram of the measuring unit and the pipeline axial slide rail of the utility model. SPECIFIC EMBODIMENTS
[0019] In order to make the technical means, creation features, purposes and effects of the utility model easy to understand, the utility model will be further described below in combination with specific embodiments.
[0020] Refer to Figures 1-5The embodiment adopts the following technical scheme: a pipeline inner and outer wall corrosion defect three-dimensional measurement device, comprising a first flexible chain 1 and a second flexible chain 2 for being fixed on the outer circumference of the pipeline, a first gear 3, a second gear 4, a first locking device 5, a second locking device 6, a pipeline axial slide rail 7 and a measurement unit 8, the outer circumferences of the first flexible chain 1 and the second flexible chain 2 are respectively provided with the first gear 3 and the second gear 4, the first gear 3 and the second gear 4 are respectively engaged with the first flexible chain 1 and the second flexible chain 2, the first flexible chain 1 and the second flexible chain 2 are suitable for different pipeline diameters, the first flexible chain 1 and the second flexible chain 2 are respectively provided with the first locking device 5 and the second locking device 6 for locking the chains, the first locking device 5 and the second locking device 6 are respectively arranged on the sides of the first flexible chain 1 and the second flexible chain 2, the pipeline axial slide rail 7 is arranged between the first gear 3 and the second gear 4, and the measurement unit 8 for moving in the axial direction of the pipeline along the slide rail is arranged on the pipeline axial slide rail 7.
[0021] It is worth noting that the two sides of the first flexible chain 1 and the second flexible chain 2 are respectively provided with circumferential scales 22 for measuring lengths, the surface of the pipeline axial slide rail 7 is marked with axial scales 23 for measuring lengths, the moving distances in the axial direction and the circumferential direction are measured through the circumferential scales 22 and the axial scales 23, the moving steps of the measurement unit 8 in the circumferential direction and the axial direction are recorded and kept consistent, and equidistant measurement is realized.
[0022] It is worth noting that the first locking device 5 and the second locking device 6 are the same in structure and are both composed of a chain tension degree adjusting lock; the chain tension degree adjusting lock comprises a tensioning wheel 9, a locking buckle 10, a locking block 11, a fixing key 12, a connecting rod 13 and a locking plate 14, the tensioning wheel 9 is in transmission connection with the chain on each corresponding side, the shaft of the tensioning wheel 9 is fixedly connected with the locking block 11 through the connecting rod 13, the two sides of the locking block 11 are provided with the locking buckle 10, the locking buckle 10 is installed on the locking plate 14 through the pluggable fixing key 12, the locking buckle 10 is provided with three adjustable locking positions 15, and the locking block 11 is provided with a locking head 16 matched with the locking positions 15.
[0023] The inner surfaces of the first flexible chain 1 and the second flexible chain 2 are provided with anti-skid devices 17; the anti-skid devices 17 adopt anti-skid silica gel points or anti-skid strip-shaped grooves, the anti-skid silica gel points are uniformly distributed on the inner surfaces of the chains and protrude from the chain bodies by 1-2 mm, the anti-skid strip-shaped grooves are uniformly arranged along the inner arms of the chains and protrude from the chain bodies by 1-2 mm, and the surfaces of the anti-skid strip-shaped grooves are provided with irregular lines.
[0024] Through the cooperation of the first locking device 5, the second locking device 6 and the anti-skid device 17, the first flexible chain 1 and the second flexible chain 2 can be firmly fixed on the pipeline. During operation, the fixing key 12 is pulled out, the locking buckle 10 is moved outward, the locking block 11 is pressed down, the appropriate locking position 15 is selected, the locking block 11 is locked in the locking position 15 of the locking buckle 10 through the lock head 16, the locking buckle 10 is moved inward, and the fixing key 12 is inserted for fixation. The locking structure is treated by tensioning to ensure the normal operation of the equipment and good transmission effect.
[0025] It is worth noting that the measurement unit 8 is slidably arranged on the pipeline axial slide rail 7 through the shaft sleeve 18. The surface of the pipeline axial slide rail 7 is provided with a plurality of sliding grooves 21 for the sliding of the measurement unit 8. The measurement unit 8 is installed on the outer wall of the shaft sleeve 18. The inner wall of the shaft sleeve 18 is provided with a plurality of rolling balls 19. The rolling balls 19 are connected to the shaft sleeve body through the springs 20 on the inner side. The rolling balls 19 roll in the sliding grooves 21 of the pipeline axial slide rail 7. By applying pressure, the rolling balls 19 press the springs 20 and move inwardly in the shaft sleeve 18. In this way, the sliding grooves 21 in which the rolling balls 19 roll can be switched, and the measurement position of the measurement unit 8 can be adjusted. After adjustment, the rolling balls 19 are abutted in the sliding grooves 21 through the elastic reset of the springs 20, so as to ensure the stability of movement.
[0026] In addition, the measurement unit 8 adopts a depth ruler for measuring depth or an ultrasonic thickness measuring unit for measuring the wall thickness of the pipeline.
[0027] The use method of the specific embodiment is as follows: (1) first, the first flexible chain 1 and the second flexible chain 2 are fixed on the outer circumference of the pipeline. The length of the first flexible chain 1 and the second flexible chain 2 is adjusted according to the diameter change of the pipeline.
[0028] (2) after the first flexible chain 1 and the second flexible chain 2 are adjusted to appropriate size, the first locking device 5 and the second locking device 6 are adjusted to ensure that the first flexible chain 1 and the second flexible chain 2 are tightly attached to the pipe wall.
[0029] (3) the first gear 3 and the second gear 4 engaged with the first flexible chain 1 and the second flexible chain 2 respectively rotate along the circumferential direction of the pipeline, and the measurement unit 8 moves along the circumferential direction.
[0030] (4) the measurement unit 8 moves along the pipeline axial slide rail 7 fixed between the first gear 3 and the second gear 4 in the axial direction of the pipeline, so as to realize the movement of the measurement unit 8 in the axial direction and the circumferential direction of the pipeline. Meanwhile, the circumferential scale 22 on the side of the two chains and the axial scale 23 on the pipeline axial slide rail 7 are used to record the movement step distance of the measurement unit 8 in the circumferential direction and the axial direction, so as to realize three-dimensional measurement.
[0031] The measuring device structure adopted by the embodiment can realize defect profile reconstruction through three-dimensional measurement, realize three-dimensional measurement of inner and outer wall corrosion defects of pipes with different diameters, can measure the overall depth distribution or wall thickness distribution of defects with a larger area at one time, greatly improve the detection precision, improve the detection efficiency, reduce the labor intensity, and has a wide market application prospect.
[0032] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. The skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.
Claims
1. A device for three-dimensional measurement of corrosion defects of inner and outer walls of a pipe, characterized in that, The utility model relates to a pipeline axial measurement device, which comprises a first flexible chain (1) and a second flexible chain (2) for fixing on the outer circumference of a pipeline, a first gear (3), a second gear (4), a first locking device (5), a second locking device (6), a pipeline axial slide rail (7) and a measurement unit (8), the outer circumference of the first flexible chain (1) and the second flexible chain (2) is respectively provided with the first gear (3) and the second gear (4), the first gear (3) and the second gear (4) are respectively engaged with the first flexible chain (1) and the second flexible chain (2), the first flexible chain (1) and the second flexible chain (2) are respectively provided with the first locking device (5) and the second locking device (6) for locking the chains, the pipeline axial slide rail (7) is arranged between the first gear (3) and the second gear (4), and the measurement unit (8) is arranged on the pipeline axial slide rail (7) and moves in the axial direction of the pipeline along the slide rail, the first flexible chain (1) and the second flexible chain (2) are respectively provided with circumferential scales (22) on both sides for recording the circumferential step distance, and the surface of the pipeline axial slide rail (7) is marked with axial scales (23) for recording the axial step distance.
2. The device for measuring corrosion defects on the inner and outer walls of a pipe according to claim 1, characterized in that, The first locking device (5) and the second locking device (6) are respectively arranged on the side edges of the first flexible chain (1) and the second flexible chain (2), the first locking device (5) and the second locking device (6) have the same structure and are both composed of a chain tension degree adjusting lock.
3. The device for measuring corrosion defects on the inner and outer walls of a pipe according to claim 2, characterized in that, The chain tension degree adjusting lock comprises a tensioning wheel (9), a locking buckle (10), a locking block (11), a fixing key (12), a connecting rod (13) and a locking plate (14), the tensioning wheel (9) is in transmission connection with the chain on the corresponding side, the shaft of the tensioning wheel (9) is fixedly connected with the locking block (11) through the connecting rod (13), the locking block (11) is provided with the locking buckle (10) on both sides, the locking buckle (10) is arranged on the locking plate (14) through the pluggable fixing key (12), the locking buckle (10) is provided with three adjustable locking positions (15), and the locking block (11) is provided with a lock head (16) matched with the locking position (15).
4. The device for measuring corrosion defects on the inner and outer walls of a pipe according to claim 1, characterized in that, The inner side surfaces of the first flexible chain (1) and the second flexible chain (2) are provided with anti-skid devices (17).
5. The device for measuring corrosion defects of inner and outer walls of a pipeline according to claim 4, characterized in that, The anti-skid devices (17) are anti-skid silica gel points, which are uniformly distributed on the inner side surfaces of the chains and protrude from the chain bodies by 1-2 mm.
6. The device for measuring corrosion defects of inner and outer walls of a pipeline according to claim 4, characterized in that, The anti-skid devices (17) are anti-skid strip grooves, which are uniformly arranged along the inner arms of the chains and protrude from the chain bodies by 1-2 mm, and the surfaces of the anti-skid strip grooves are provided with irregular lines.
7. The device for measuring corrosion defects on the inner and outer walls of a pipe according to claim 1, characterized in that, The measurement unit (8) is a depth ruler for measuring depth.
8. The device for measuring corrosion defects on the inner and outer walls of a pipe according to claim 1, characterized in that, The measurement unit (8) is an ultrasonic thickness measuring unit for measuring the wall thickness of a pipeline.
9. The device for measuring corrosion defects of inner and outer walls of a pipeline according to claim 1, characterized in that, The measuring unit (8) is slidably arranged on the pipeline axial slide rail (7) through the shaft sleeve (18), the measuring unit (8) is mounted on the outer wall of the shaft sleeve (18), the inner wall of the shaft sleeve (18) is provided with the ball (19), the ball (19) is connected with the shaft sleeve body through the spring (20) on the inner side, and the ball (19) rolls in the pipeline axial slide rail (7).
10. The device for measuring corrosion defects of inner and outer walls of a pipeline according to claim 1, characterized in that, The surface of the pipeline axial slide rail (7) is provided with a plurality of sliding grooves (21) for the sliding of the measuring unit (8).