CN217332273U - Pipeline nondestructive testing device - Google Patents

Abstract

The utility model discloses a pipeline nondestructive test device relates to nondestructive test technical field, but including the scan of cohesion on the pipeline frame of looking into, the scan is looked into and is had a plurality of assembly pulleys that all support tight pipeline on the frame, and scans and still installs its actuating mechanism of drive around pipeline pivoted on looking into the frame, and scans and still install the infrared detection instrument on looking into the frame. The utility model discloses an actuating mechanism drive makes to sweep and looks into the frame and go up the circumferential rotation on the pipeline to make infrared detection instrument accomplish the detection to the whole periphery of pipeline, make and do not need artifical the participation in whole testing process, realize automatic the detection, make detection efficiency improve greatly.

Description

Pipeline nondestructive testing device

Technical Field

The utility model relates to a nondestructive test technical field particularly, relates to a pipeline nondestructive test device.

Background

The integrity of oil and gas pipelines is an important factor in the safety of oil and gas transportation, and pipeline companies pay great attention to the integrity. The integrity of the pipeline fails due to the damage modes such as pipeline corrosion or punching, oil stealing and the like, so that great economic loss, environmental and social influences are caused; therefore, the pipeline needs to be periodically detected, and failure conditions such as corrosion, deformation, leakage and the like of the pipeline are discovered in time.

With the rapid advance of national energy strategy in recent years, high-grade steel large-caliber steel pipes are widely applied to newly-built oil and gas pipelines. By the end of 2020, the accumulated construction mileage of the high steel grade oil and gas pipelines in China reaches 3.5 thousands of meters, and the pipelines are located at the first place in the world. However, with the increasing construction mileage, disastrous accidents such as leakage and explosion of high-grade steel oil and gas pipelines sometimes occur. Statistics of relevant data show that more than 70% of disaster accidents are caused by the cracking of the defective circumferential weld. Therefore, how to adopt effective measures to reinforce or repair the girth weld of the high-steel-grade pipeline with the defects is the key for ensuring the normal operation of the oil and gas pipeline.

At present, the composite material repairing and reinforcing technology has low requirements on construction conditions and strong environment adaptability, can be used for reinforcing without fire under the condition of not influencing the operation of a pipeline, and has the process characteristics of safety, rapidness and the like, so that the composite material repairing and reinforcing technology is widely applied to pipeline repairing work.

In order to ensure the repair quality of the pipeline, the repair condition of the pipeline needs to be detected after the pipeline is repaired, and the existing nondestructive detection methods comprise ultrasonic detection, ray detection, eddy current detection, penetration detection and magnetic powder detection. The method has low detection efficiency on the composite material, so that a pipeline nondestructive detection device suitable for detecting the composite material is urgently needed to realize automatic detection on the pipeline reinforced composite material.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pipeline nondestructive test device can realize automated inspection to the pipeline after the combined material restores the reinforcement, makes detection efficiency improve greatly.

For realizing the purpose of the utility model, the technical proposal adopted is that: the utility model provides a pipeline nondestructive test device, but including the besom frame of looking on the pipeline of hugging closely, the scanning has a plurality of assembly pulleys that all support tightly the pipeline on the frame, and still installs its actuating mechanism around pipeline pivoted on the scanning frame, and still installs infrared detection instrument on the scanning frame.

Furthermore, the infrared detection tool comprises an installation frame installed on the scanning frame, the installation frame is further provided with a thermal infrared imager, and an optical center of a lens of the thermal infrared imager is perpendicular to the pipeline.

Furthermore, a light shield is further installed on the installation frame and covers the lens of the thermal infrared imager.

Furthermore, the mounting bracket comprises an upright post extending along the radius direction of the pipeline, a mounting plate capable of being adjusted up and down is mounted on the upright post, and the thermal infrared imager is mounted on the mounting plate.

Further, it includes two cohesion arms to sweep the frame of looking into, and locking structure is installed jointly to the one end of two cohesion arms, and articulated frame is installed jointly to the other end of two cohesion arms, and drive structure and infrared detection instrument all install on articulated frame.

Furthermore, the embracing arm comprises a plurality of arc-shaped chain links, and the two adjacent arc-shaped chain links and the hinge frame are hinged through pin shafts.

Furthermore, the arc-shaped chain link comprises two arc-shaped connecting rods which are arranged at intervals, and a reinforcing rib is arranged between the two arc-shaped connecting rods.

Furthermore, the pulley block comprises two sliding wheels, the two sliding wheels in the same pulley block are respectively installed at two ends of the pin shaft, and the roller surfaces of the sliding wheels are higher than the inner edge of the arc-shaped connecting rod.

Furthermore, the locking structure comprises locking nuts respectively installed at the same ends of the two embracing arms, the thread directions of the two locking nuts are opposite, and the two locking nuts are jointly provided with locking screw rods.

Furthermore, a locking hand wheel is installed at one end of the locking screw rod.

Furthermore, the driving mechanism comprises a crawler belt wound on two adjacent pulley blocks and a driving structure for driving the crawler belt to drive, and the return surface of the crawler belt is pressed on the pipeline.

Further, the track is installed on two assembly pulleys of the same end of two cohesion arms, and still installs the base on the articulated frame, and drive structure still installs driving motor including installing on the base, and driving wheel is installed to driving motor's output, and the track transfer surface is around establishing on the action wheel.

Furthermore, a fixed frame is further installed on the base, and a follow-up wheel tightly abutted to the pipeline is further rotatably supported between the fixed frame and the hinged frame.

Furthermore, articulated frame and mount are "U" type, and the both ends of articulated frame and mount are the arc surface.

The beneficial effect of the utility model is that,

1. the utility model discloses a carry on infrared detection instrument and carry out nondestructive test to the combined material of pipeline reinforcement to through the actuating mechanism drive, make to sweep and look into the circumferential rotation on the pipeline, thereby make infrared detection instrument accomplish the detection to the whole periphery of pipeline, make and do not need artifical the participation in the whole testing process, realize automatic the detection, make detection efficiency improve greatly.

2. The utility model discloses in make to sweep and examine the frame and embrace on the pipeline to through drive structure drive track transmission, make track and pipeline produce relative motion, thereby make to sweep and examine the frame and rotate on the pipeline, adsorb in the frame of sweeping of examined the material for current adoption magnetism wheel or sucking disc, not only make to sweep and examine the frame and have the guidance quality in the motion process, and application range is wider.

3. The mounting plate is adjustable on the upright column, so that the distance between the thermal infrared imager and the pipeline is adjusted, and the thermal infrared imager is matched with the scanning frame to rotate on the pipeline, so that the detection effect of the thermal infrared imager is optimal, the thermal infrared imager can completely detect the composite material, and the detection result is more accurate.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the principles of the invention.

FIG. 1 is a schematic view of the nondestructive testing apparatus for pipeline provided by the present invention;

FIG. 2 is a schematic view of the mounting of the scanning gantry and drive structure;

FIG. 3 is a schematic diagram of a drive configuration;

fig. 4 is a schematic structural diagram of an infrared detection tool.

Reference numbers in the drawings and corresponding part names:

1. scanning frame 2, driving structure 3, infrared detection tool;

11. the device comprises a hinged frame 12, a clasping arm 13, a pin shaft 14, a sliding wheel 15, a locking structure 16, a base 17, a fixed frame 18, a follow-up wheel 19 and a crawler;

121. the arc-shaped chain links 1211, the arc-shaped connecting rods 1212 and the reinforcing ribs;

151. a locking nut 152, a locking screw 153 and a locking hand wheel;

21. a driving motor 22 and a driving wheel;

31. the infrared thermal imager is arranged on the mounting frame 32, and the thermal imager 33 is arranged on the light shield;

311. column 312, mounting plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the invention. It should be noted that, for the convenience of description, only the parts related to the present invention are shown in the drawings.

In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict. The present invention will be described in detail with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 and 2, the utility model provides a nondestructive pipeline testing device, which comprises a scanning frame 1, wherein the scanning frame 1 can be opened or closed, and the scanning frame 1 after being closed is annular, in the actual use process, the scanning frame 1 is arranged on the outer wall of the pipeline in an encircling manner; meanwhile, the scanning frame 1 is provided with a plurality of pulley blocks, the pulley blocks are arranged at intervals along the circumferential direction of the scanning frame 1, when the scanning frame 1 is mounted on a pipeline in an encircling manner, the pulley surfaces of the pulley blocks abut against the outer wall of the pipeline, namely, after the scanning frame 1 is mounted on the pipeline, the scanning frame 1 does not contact with the outer wall of the pipeline, but contacts with the pipeline through the pulley surfaces of the pulley blocks, so that the scanning frame 1 can rotate on the pipeline under the condition of external force while the scanning frame 1 is ensured to be held on the pipeline.

Sweep and still install infrared detection instrument 3 on the frame 1 of looking into, infrared detection instrument 3 is used for detecting the combined material of reinforcement on the pipeline.

In some embodiments, as shown in fig. 4, the infrared detection tool 3 includes a mounting frame 31 mounted on the scanning frame 1, the mounting frame 31 may be fixed by screws, and the like, and a thermal infrared imager 32 is further mounted on the mounting frame 31, and an optical center of a lens of the thermal infrared imager 32 is perpendicular to the pipeline. The infrared ray radiated outwards by the reinforced composite material on the pipeline is received by an infrared thermal imager, the infrared ray is converted into a visible temperature field distribution cloud picture by a related imaging technology, and finally, the temperature field abnormity is analyzed to determine the pipeline defect information.

In some embodiments, the mounting frame 31 is further provided with a light shield 33, the light shield 33 is fixed through screws and the like, and the light shield 33 covers the lens of the thermal infrared imager 32, so that the lens of the thermal infrared imager 32 is prevented from being damaged by collision when the scanning frame 1 rotates on the pipeline, harmful light can be shielded, and the measurement result of the thermal infrared imager 32 is more accurate.

In some embodiments, the mounting frame 31 includes a column 311 and a mounting plate 312, the column 311 may directly adopt a screw, an axial direction of the column 311 is consistent with a radius direction of the pipeline, the column 311 extends outwards along the radius direction of the pipeline, an axial direction of the mounting plate 312 is consistent with a length direction of the pipeline, a through hole is provided on the mounting plate 312, the column 311 is arranged in the through hole in a penetrating manner, and the column 311 is further provided with two locking nuts 151 for locking the mounting plate 312, one locking nut 151 is respectively located on the upper surface of the mounting plate 312, the other locking nut 151 is located on the lower surface of the mounting plate 312, and the mounting plate 312 is locked and fixed on the screw through the cooperation of the two locking nuts 151. The thermal infrared imager 32 is mounted at an extended end of the mounting plate 312. When the utility model is used, the two adjusting nuts can be screwed to adjust the position of the mounting plate 312 on the upright column 311, so that the thermal infrared imager 32 mounted on the mounting plate 312 can completely detect the composite material reinforced by the pipeline; meanwhile, the upright column 311 extends along the radius direction of the pipeline, so that the force applied to the upright column 311 is consistent with the force applied to the scanning frame 1 in the holding direction, the force applied to the scanning frame 1 in the holding direction on the pipeline is more uniform, and the scanning frame 1 is more stable when rotating on the pipeline.

In some embodiments, as shown in fig. 2, the scanning frame 1 includes two embracing arms 12, the embracing arms 12 are arc-shaped, the two embracing arms 12 are arranged oppositely, one end of each of the two embracing arms 12 is commonly provided with a hinge frame 11, the hinge frame 11 is mounted in a hinged manner with the embracing arm 12, so that the two embracing arms 12 can swing relative to the hinge frame 11, the scanning frame 1 can be opened and closed, and the driving structure 2 and the infrared detection tool 3 are both mounted on the hinge frame 11, so that the driving structure 2 mounted on the hinge frame 11 and the infrared detection tool 3 cannot move during the opening or closing process of the two embracing arms 12, and the scanning frame 1 is more convenient to mount; meanwhile, the other ends of the two embracing arms 12 are jointly provided with a locking structure 15, and the locking structure 15 is mainly used for locking and fixing the scanning frame 1 after embracing on the pipeline or loosening the locking of the two embracing arms 12 by the locking structure 15 when the scanning frame 1 needs to be taken down from the pipeline.

In some embodiments, the clasping arm 12 comprises a plurality of arc-shaped chain links 121, and the two adjacent arc-shaped chain links 121 and the two arc-shaped chain links 121 and the hinge frame 11 are hinged by the pin shaft 13, so that the two clasping arms 12 and the hinge frame 11 jointly form a chain type structure which can be bent at will, and the clasping arm 12 can be folded and bent, thereby not only facilitating the later storage of the utility model, but also facilitating the clasping of the utility model on a pipeline in the using process; and simultaneously, work as the utility model discloses examine time measuring to the pipeline of different pipe diameters, increase that can correspond or reduce the quantity that the arc is connected can, the utility model discloses application scope is wide.

In some embodiments, the arc-shaped link 121 includes two arc-shaped connecting rods 1211 arranged at intervals, the interval between the two arc-shaped rods can be adjusted according to structural requirements, and in order to ensure the strength of the arc-shaped link 121, a reinforcing rib 1212 is further provided between the two arc-shaped connecting rods 1211, the number of the reinforcing ribs 1212 is not limited, but when there are a plurality of reinforcing ribs 1212 between the two arc-shaped connecting rods 1211, a plurality of reinforcing ribs 1212 may be arranged at intervals along the extending direction of the arc-shaped connecting rods 1211. The arc-shaped chain link 121 with the structure ensures the structural strength and greatly reduces the weight, so that the carrying is more convenient, and the processing material consumption and the processing cost are greatly reduced.

In some embodiments, the pulley block includes two sliding wheels 14, the two sliding wheels 14 in the same pulley block have the same size, two ends of the pin 13 extend outward through the two arc-shaped connecting rods 1211, and the two sliding wheels 14 in the same pulley block are installed at two ends of the pin 13, so that the two sliding wheels 14 in the same pulley block are located outside the two arc-shaped connecting rods 1211 of the arc-shaped chain links 121, respectively, and the roller surface of the sliding wheel 14 is higher than the inner edge of the arc-shaped connecting rod 1211, so that after the scanning frame 1 is clasped on the pipeline, not only can the sliding wheels 14 be guaranteed to be pressed on the outer wall of the pipeline, but also both sides of the arc-shaped chain links 121 can be supported by the sliding wheels 14, so that the clasping of the scanning frame 1 on the pipeline is more stable, the rotation of the scanning frame 1 on the pipeline is more stable, and the infrared thermal imager 32 is prevented from shaking during the detection process, so that the detection accuracy is greatly improved.

Here, there may be one sliding wheel 14 in the pulley block, and when there is one sliding wheel 14 in the pulley block, in order to ensure the smooth operation of the scanning frame 1, the sliding wheel 14 may be directly located between two arc-shaped connecting rods 1211 in the arc-shaped chain link 121; of course, there may be three sliding wheels 14 in the pulley block, and when there are three sliding wheels 14 in the pulley block, in order to ensure the smooth operation of the scanning frame 1, one of the sliding wheels 14 may be directly located between the two arc-shaped connecting rods 1211 in the arc-shaped chain links 121, and the other two sliding wheels 14 are respectively installed at two ends of the pin 13. That is, the number of the sliding wheels 14 in the pulley block of the present invention is not limited in particular, and the number of the sliding wheels 14 can be adjusted at will while ensuring that the scanning frame 1 can rotate stably on the pipeline.

In some embodiments, the locking structure 15 includes two locking nuts 151, the thread directions of the two locking nuts 151 are opposite, and when the two arc-shaped links 121 are clasped on the pipeline, the two locking nuts 151 are respectively located at the same end of the two arc-shaped links 121; meanwhile, the locking nuts 151 are provided with mounting portions which can be directly and hingedly mounted at the ends of the arc-shaped chain links 121, so that the locking nuts 151 can swing freely relative to the arc-shaped chain links 121, the two locking nuts 151 are jointly provided with the locking screw 152, and the two locking nuts 151 are close to or far away from each other by rotating the locking screw 152, so that the two arc-shaped chain links 121 are locked or unlocked. Here, in order to facilitate the installation of the locking nut 151, the installation portion of the locking nut 151 may be directly hinge-mounted on the pin shaft 13 at the end of the arc-shaped link 121; of course, the mounting portion of the locking nut 151 may be separately hinge-mounted at the end of the arc-shaped link 121 directly through the hinge shaft.

In some embodiments, a locking hand wheel 153 is installed at one end of the locking screw 152, the locking hand wheel 153 and the locking screw 152 may be an integral structure, and the locking hand wheel 153 is used for screwing the locking screw 152 to rotate, so that the locking screw 152 is screwed more conveniently.

In some embodiments, the driving mechanism comprises a track 19 wound on two adjacent pulley blocks, the return surface of the track 19 is pressed on the pipeline, and the scanning frame 1 is also provided with a driving structure 2 for driving the track 19 to drive. Because the pipeline is fixedly arranged, when the driving structure 2 drives the crawler belt 19 to rotate, the friction force between the crawler belt 19 and the outer wall of the pipeline is transmitted to the scanning frame 1, so that the scanning frame 1 rotates on the outer wall of the pipeline.

In a certain principle, the longer the return surface of the crawler 19 is pressed on the pipeline, the larger the joint surface of the crawler 19 and the pipeline is, so that the friction between the crawler 19 and the outer wall of the pipeline is larger, the smaller the possibility that the crawler 19 slips from the outer wall of the pipeline is, and the more stable the rotation of the scanning frame 1 driven by the crawler 19 on the pipeline is during transmission; however, the greater the pressing force of the return surface of the crawler 19 against the pipeline, the greater the friction between the crawler 19 and the outer wall of the pipeline, and in this case, the less the possibility of the crawler 19 slipping against the outer wall of the pipeline, so that it is also ensured that the crawler 19 can drive the scanning frame 1 to rotate stably on the pipeline during transmission. Therefore, in the actual design process, the pressing force of the return surface of the crawler 19 on the pipeline and the size of the joint surface of the return surface of the crawler 19 and the pipeline can be adjusted according to the actual situation.

In some embodiments, the crawler belt 19 is mounted on two pulley blocks at the same end of the two embracing arms 12, and since the two pulley blocks are respectively located on the pin shafts 13 at the hinged positions of the two embracing arms 12 and the hinge seats, the positions of the two pulley blocks for mounting the crawler belt 19 cannot be changed while the two embracing arms 12 rotate, so that the mounting stability of the crawler belt 19 is ensured; when there are a plurality of pulleys in the pulley block, the crawler belt 19 is wound around two sliding wheels 14 located on the same side in the two pulley blocks. The articulated frame 11 is further provided with a base 16, the base 16 can extend along the axis direction of the pipeline, as shown in fig. 3, the driving structure 2 comprises a driving motor 21 fixedly installed on the base 16, the output end of the driving motor 21 can also be provided with a speed reducer, the output end of the speed reducer is provided with a driving wheel 22, the conveying surface of the crawler 19 is wound on the driving wheel 22, and the driving wheel 22 drives the crawler 19 to transmit while rotating.

When the base 16 is mounted on the hinge frame 11, the upright 311 in the infrared detection tool 3 can be vertically mounted, and at this time, the mounting position of the upright 311 can be adjusted along the axial direction of the base 16.

In some embodiments, because driving motor 21 is heavier by itself, consequently, after driving motor 21 installs on base 16, the barycenter skew of base 16 leads to articulated frame 11 to act the power on the pipeline inhomogeneous, consequently, in order to guarantee base 16 and driving motor 21 keep balance, still installs mount 17 on the base 16, and mount 17 is located driving motor 21's below, works as the utility model discloses install the back on the pipeline, the lower extreme of mount 17 supports on the pipeline to make driving motor 21 obtain supporting, make driving motor 21 atress more balanced, make articulated seat pipeline radially hug closely, thereby make to scan and look into frame 1 more steady when rotating on the pipeline. In order to enable the fixed frame 17 to support the driving motor 21 and simultaneously not to influence the rotation of the scanning frame 1, a follower wheel 18 tightly abutted to a pipeline is rotatably supported between the fixed frame 17 and the hinged frame 11, the wheel shaft of the follower wheel 18 can be directly an extension end, the wheel shaft of the follower wheel 18 can also be a wheel shaft independently arranged between the hinged frame 11 and the fixed frame 17, and the wheel surface of the follower wheel 18 and the wheel surface of the sliding wheel 14 are on the same circumference taking the pipeline as the center, so that after the scanning frame 1 is tightly embraced on the pipeline, the clasping force of the sliding wheel 14 is consistent with that of the follower wheel 18, and the rotation stability of the scanning frame 1 is ensured.

In some embodiments, the hinge frame 11 and the fixing frame 17 are both n-shaped, the base 16 may be plate-shaped or strip-shaped, when the base 16 is strip-shaped, a bayonet matched with the width of the base 16 may be formed on the inner top surfaces of the hinge frame 11 and the fixing frame 17, and both ends of the base 16 are clamped in the bayonet and then fixed by screws, so that after the base 16 is installed, the base 16 cannot swing left and right relative to the hinge frame 11 and the fixing frame 17, and the installation of the base 16 is more stable.

In some embodiments, both ends of the hinge frame 11 and the fixed frame 17 are arc surfaces, the radius of the arc surfaces of both ends of the hinge frame 11 and the radius of the arc surfaces of both ends of the fixed frame 17 are equal to the radius of the sliding wheel 14, and the hinge frame 11 and the fixed frame 17 are both supported on the outer wall of the pipeline through the arc surfaces, so that the support of the base 16 is ensured, and when the scanning frame 1 rotates, the friction between the hinge frame 11, the fixed frame 17 and the outer wall of the pipeline is smaller, so that the scanning frame 1 cannot damage the outer wall of the pipeline when rotating.

When the pipeline needs to be subjected to nondestructive testing, the two embracing arms 12 are rotated to enable the two embracing arms 12 to be embraced on the outer wall of the pipeline, the locking screw 152 is jointly inserted into the two locking nuts 151, the locking screw 152 is screwed through the locking hand wheel 153, the two locking nuts 151 are close to each other when the locking screw 152 rotates, the two embracing arms 12 gradually embrace the pipeline when the two locking nuts 151 are close to each other, the sliding wheels 14 are gradually compressed on the outer wall of the pipeline, when the two locking nuts 151 cannot be continuously close to each other, the sliding wheels 14 are completely compressed on the pipeline, and the two embracing arms 12 are completely embraced on the outer wall of the pipeline. When the two embracing arms 12 are tightly embraced on the outer wall of the pipeline, the return surface of the crawler belt 19 is gradually pressed on the outer wall of the pipeline, and when the outer rings of the two embracing arms 12 are tightly embraced, the return surface of the crawler belt 19 is completely pressed on the outer wall of the pipeline.

The driving motor 21 is started, the driving motor 21 drives the driving wheel 22 to rotate, the driving wheel 22 drives the crawler belt 19 to rotate while rotating, due to the fact that the pipeline is not moved, the crawler belt 19 can drive the scanning frame 1, the driving structure 2 and the infrared detection tool 3 to rotate on the outer wall of the pipeline while transmitting through friction between the crawler belt 19 and the surface of the pipeline, the infrared thermal imager receives infrared rays radiated outwards by the reinforcing composite materials on the pipeline while the infrared detection tool 3 rotates, the infrared rays are converted into a visible temperature field distribution cloud picture through a related imaging technology, and finally the abnormal temperature field is analyzed to determine pipeline defect information.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/modes or examples and features of the various embodiments/modes or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are provided for clarity of description only, and are not intended to limit the scope of the invention. Other variations or modifications will occur to those skilled in the art based on the foregoing disclosure and are still within the scope of the invention.

Claims (14)

1. The utility model provides a pipeline nondestructive test device which characterized in that, but including the sweeping frame (1) of hugging closely on the pipeline, has a plurality of assembly pulleys that all support tightly the pipeline on sweeping frame (1), and sweep and look up still to install on frame (1) and drive its actuating mechanism around pipeline pivoted, and sweep and look up and still install infrared detection instrument (3) on frame (1).

2. The nondestructive pipeline inspection device according to claim 1, wherein the infrared inspection tool (3) comprises a mounting frame (31) mounted on the scanning frame (1), a thermal infrared imager (32) is further mounted on the mounting frame (31), and an optical center of a lens of the thermal infrared imager (32) is perpendicular to the pipeline.

3. The nondestructive testing device for the pipeline according to claim 2, wherein a light shield (33) is further installed on the mounting rack (31), and the light shield (33) covers the lens of the thermal infrared imager (32).

4. The nondestructive inspection device for pipelines according to claim 2 or 3, wherein the mounting frame (31) comprises a column (311) extending along the radius direction of the pipeline, a mounting plate (312) capable of being adjusted up and down is mounted on the column (311), and the thermal infrared imager (32) is mounted on the mounting plate (312).

5. The nondestructive testing device for pipelines according to claim 1, wherein the scanning frame (1) comprises two embracing arms (12), one ends of the two embracing arms (12) are jointly provided with the locking structure (15), the other ends of the two embracing arms (12) are jointly provided with the hinge frame (11), and the driving structure (2) and the infrared detection tool (3) are both arranged on the hinge frame (11).

6. The nondestructive testing device for the pipeline according to claim 5, wherein the embracing arm (12) comprises a plurality of arc-shaped chain links (121), and the adjacent two arc-shaped chain links (121) and the hinge frame (11) are hinged through pin shafts (13).

7. The nondestructive testing device for the pipeline according to claim 6, wherein the arc-shaped chain link (121) comprises two arc-shaped connecting rods (1211) arranged at intervals, and a reinforcing rib (1212) is further arranged between the two arc-shaped connecting rods (1211).

8. The nondestructive testing device for pipelines according to claim 7, wherein the pulley block comprises two sliding wheels (14), the two sliding wheels (14) in the same pulley block are respectively installed at two ends of the pin shaft (13), and the roller surfaces of the sliding wheels (14) are higher than the inner edges of the arc-shaped connecting rods (1211).

9. The nondestructive testing device for the pipeline according to claim 5, wherein the locking structure (15) comprises two locking nuts (151) respectively installed at the same end of the two embracing arms (12), the two locking nuts (151) have opposite thread directions, and the two locking nuts (151) are jointly provided with a locking screw (152).

10. The nondestructive testing device for pipelines according to claim 9, wherein a locking hand wheel (153) is mounted at one end of the locking screw (152).

11. The nondestructive testing device for pipelines according to claim 5, wherein the driving mechanism comprises a driving structure (2) which is driven around a crawler (19) and a driving crawler (19) which are arranged on two adjacent pulley blocks, and the return surface of the crawler (19) is pressed on the pipeline.

12. The nondestructive testing device for the pipeline according to claim 11, wherein the crawler belt (19) is installed on two pulley blocks at the same end of the two embracing arms (12), the base (16) is further installed on the hinge frame (11), the driving structure (2) comprises a driving motor (21) which is further installed on the installation base (16), the output end of the driving motor (21) is provided with a driving wheel (22), and the conveying surface of the crawler belt (19) is wound on the driving wheel (22).

13. The nondestructive testing device for the pipeline according to claim 12, wherein a fixing frame (17) is further installed on the base (16), and a follower wheel (18) abutting against the pipeline is further rotatably supported between the fixing frame (17) and the hinge frame (11).

14. The nondestructive testing device for pipelines according to claim 13, wherein the hinge frame (11) and the fixing frame (17) are of "n" type, and both ends of the hinge frame (11) and the fixing frame (17) are arc surfaces.

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