Infrared corrosion detection device for external corrosion of metal under thermal insulation layer

Abstract

The utility model discloses an infrared corrosion detection device for external corrosion of metal under a thermal insulation layer, which comprises a mounting rack, a threaded sleeve is rotatably arranged in the mounting rack, a first bevel gear is fixedly arranged on the surface of the threaded sleeve, a screw is arranged in the threaded sleeve in a threaded manner, and a second bevel gear is fixedly arranged on the surface of the threaded sleeve. A support is fixedly arranged at the end, close to the center of the mounting frame, of the screw rod, a universal wheel is fixedly arranged in the support, a rotating block is rotationally arranged in the mounting frame, a second bevel gear is fixedly arranged on the front side of the rotating block, and the second bevel gear is in meshed connection with the first bevel gear; according to the device, the situation that a thermal infrared imager is held by hand for detection on the surface of a pipeline is avoided, it is ensured that the distance between the thermal infrared imager and the pipeline is kept consistent during detection, and therefore the scanning accuracy is improved, meanwhile, the device can be adjusted according to the outer diameter of the pipeline, the device can move on the surfaces of the pipelines with different calibers, and the detection accuracy is improved. And the adaptability of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical image technical field especially relates to infrared corrosion detection device of metal outer corrosion under thermal insulation layer. BACKGROUND

[0002] Metal corrosion under thermal insulation layer refers to the corrosion phenomenon that occurs on the surface of metal under the condition of being covered by thermal insulation layer. Due to the existence of thermal insulation layer, a relatively special environment is formed, and factors such as humidity and temperature change can easily cause chemical reaction between metal and surrounding medium. This corrosion may lead to reduction of metal strength, damage of equipment, and even safety accidents and economic losses in serious cases.

[0003] In the related field of pipeline use, metal corrosion under pipeline thermal insulation layer often occurs. In order to ensure the normal use of pipeline, it is necessary to detect it. The existing detection method is usually to use infrared thermal imager for detection. Since corrosion reaction is usually exothermic reaction, it can cause local temperature rise of metal surface, so infrared thermal imager can detect this temperature change and display it in the form of thermal image. By analyzing the temperature difference in the thermal image, it can be judged whether the metal has corrosion and the approximate position and degree of corrosion.

[0004] The existing part of infrared thermal imager is moved on the pipeline by hand, so as to scan the pipeline to detect the corrosion condition. However, the distance between infrared thermal imager and pipeline cannot be kept consistent during movement. Since the distance will affect the intensity of infrared radiation received by infrared thermal imager, the problem of unstable scanning will occur, which will further affect the result of metal corrosion detection. UTILITY MODEL CONTENT

[0005] In view of the deficiencies of the prior art, the utility model provides an infrared corrosion detection device for metal outer corrosion under thermal insulation layer to solve the problems raised in the background art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] An infrared corrosion detection device for metal outer corrosion under thermal insulation layer, comprising a mounting frame, a threaded sleeve rotatably arranged in the inside of the mounting frame, a first bevel gear fixedly arranged on the surface of the threaded sleeve, a screw threadedly arranged in the inside of the threaded sleeve, a bracket fixedly arranged on one end of the screw close to the center of the mounting frame, a universal wheel fixedly arranged in the inside of the bracket, a pipeline lap-jointed arranged on the surface of the universal wheel, a rotating block rotatably arranged in the inside of the mounting frame, a second bevel gear fixedly arranged on the front side of the rotating block, the second bevel gear and the first bevel gear being meshingly connected, a driving assembly arranged on the surface of the mounting frame, and a detection assembly arranged on the top of the mounting frame.

[0008] Preferably, the driving assembly comprises a motor fixedly arranged on the front side of the mounting frame, an output end of the motor is fixedly provided with a supporting shaft, a surface of the supporting shaft is fixedly provided with a first gear, a surface of the first gear is fixedly provided with a second gear, and the second gear is fixedly connected with the rotating block.

[0009] Preferably, the detecting assembly comprises a supporting frame fixedly arranged on the top of the mounting frame, a top of the supporting frame is fixedly provided with a telescopic cylinder, an output end of the telescopic cylinder extends to the inside of the supporting frame through the supporting frame and is fixedly provided with an infrared thermal imager.

[0010] Preferably, a surface of the mounting frame is fixedly provided with a handle, and the handle comprises two handles.

[0011] Preferably, one end of the screw rod away from the center of the mounting frame is fixedly provided with a connecting plate, a bottom of the connecting plate is fixedly provided with a limiting rod, and the limiting rod is slidingly connected with the mounting frame.

[0012] Preferably, the number of the universal wheels is three, and the three universal wheels are circularly arranged.

[0013] Preferably, the number of the limiting rods is two, and the two limiting rods are symmetrically arranged.

[0014] Compared with the prior art, the infrared corrosion detection device for the metal outer corrosion under the thermal insulation layer has the advantages that: the rotating block is driven to rotate by the driving assembly, the second bevel gear is driven to rotate by the rotating block, the first bevel gear is driven to rotate by the second bevel gear, the threaded sleeve is driven to rotate by the first bevel gear, the screw rod is driven to move up and down in the threaded sleeve by the threaded sleeve, the support universal wheel is driven to move by the screw rod when the screw rod moves up and down, and the universal wheel is overlapped on the surface of the pipeline. The device avoids the hand-held infrared thermal imager to detect on the surface of the pipeline, ensures that the distance between the infrared thermal imager and the pipeline is consistent during detection, thereby improving the accuracy of scanning, and the device can also be adjusted according to the outer diameter of the pipeline, so that the device can move on the surface of the pipeline with different diameters, and the adaptability of the device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a front view of the structure of the utility model;

[0016] Figure 2 It is a front view of the structure of the utility model;

[0017] Figure 3 It is a front view of the structure of the utility model;

[0018] Figure 4 It is a front view of the structure of the utility model;

[0019] Figure 5The partial structure schematic view of the utility model is shown in the figure.

[0020] Figure 6 The utility model is the enlarged view of A part.

[0021] In the figure: 1, mounting frame;2, pipeline;3, threaded sleeve;4, first bevel gear;5, screw;6, support;7, universal wheel;8, second bevel gear;9, rotating block;10, second gear;11, connecting plate;12, limit rod;13, support frame;14, telescopic pneumatic cylinder;15, infrared thermal imager;16, first gear;17, support shaft;18, motor;19, handle. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the range of protection of the utility model.

[0023] Refer to Figures 1-6The utility model provides an infrared corrosion detection device of metal outer corrosion under thermal insulation layer, including mounting bracket 1, the surface fixedly arranged of mounting bracket 1 is provided with handle 19, the number of handle 19 is two, through handle 19 convenient to pull device moves, the inside rotation of mounting bracket 1 is provided with screw sleeve 3, the surface fixedly arranged of screw sleeve 3 is provided with first bevel gear 4, the inside screw of screw sleeve 3 is provided with screw rod 5, and one end of screw rod 5 near mounting bracket 1 center is fixedly provided with support 6, the inside fixedly provided of support 6 is provided with universal wheel 7, the number of universal wheel 7 is three, and three universal wheel 7 is circular array distribution, through multiple universal wheel 7 can make device stable on the surface of pipeline 2 moves, the surface of universal wheel 7 is overlapped and is provided with pipeline 2, the inside rotation of mounting bracket 1 is provided with rotating block 9, and the front side fixedly provided of rotating block 9 is provided with second bevel gear 8, and second bevel gear 8 and first bevel gear 4 are engaged connection, the surface of mounting bracket 1 is provided with drive assembly, and the top of mounting bracket 1 is provided with detection assembly, the infrared corrosion detection device of metal outer corrosion under thermal insulation layer, through drive assembly makes rotating block 9 rotate and drive second bevel gear 8 to rotate, and second bevel gear 8 rotates and drive first bevel gear 4 to rotate, and first bevel gear 4 rotates and makes screw sleeve 3 rotate, and screw sleeve 3 rotates and makes screw rod 5 move up and down in its inside, and screw rod 5 moves up and down and drive support 6 universal wheel 7 to move, make universal wheel 7 overlap on the surface of pipeline 2, the device avoids handheld infrared thermal imager 15 on the surface of pipeline 2 and carries out detection, ensures the distance between infrared thermal imager 15 and pipeline 2 when detecting remains consistent, to improve the accuracy of scanning, and simultaneously the device can also be adjusted according to the outer diameter size of pipeline 2, makes it can move on the surface of different caliber pipeline 2, improves the adaptability of device.

[0024] Specifically, the drive assembly includes a motor 18 fixedly arranged on the front side of the mounting bracket 1, a support shaft 17 fixedly arranged on the output end of the motor 18, a first gear 16 fixedly arranged on the surface of the support shaft 17, a second gear 10 fixedly arranged on the surface of the first gear 16, the second gear 10 fixedly connected with the rotating block 9, starting the motor 18, driving the support shaft 17 to rotate, the support shaft 17 rotating drives the first gear 16 to rotate, the first gear 16 rotating drives the second gear 10 to rotate, the second gear 10 rotating drives the rotating block 9 to rotate, for driving the position of the universal wheel 7.

[0025] Specifically, the detection assembly includes a support frame 13 fixedly arranged on the top of the mounting bracket 1, an extension cylinder 14 fixedly arranged on the top of the support frame 13, the output end of the extension cylinder 14 extending through the support frame 13 to the inside of the support frame 13 and fixedly arranged with an infrared thermal imager 15, driving the extension cylinder 14 to extend the output end, making the infrared thermal imager 15 move up and down, adjusting the distance between the infrared thermal imager 15 and the surface of the pipeline 2, improving the adaptability of the device.

[0026] Specific, the screw rod 5 away from the mounting frame 1 center one end is fixedly provided with the connecting plate 11, the bottom of the connecting plate 11 is fixedly provided with the limiting rod 12, the number of limiting rod 12 is two, and the two limiting rods 12 are symmetrically distributed, the limiting rod 12 and the mounting frame 1 are slidably connected, the connecting plate 11 moves when the screw rod 5 moves up and down, the connecting plate 11 moves the limiting rod 12 to move inside the mounting frame 1, and the connecting plate 11 and the limiting rod 12 can avoid the screw rod 5 moving together when the threaded sleeve 3 rotates.

[0027] The electrical components appearing in this document are all connected with the main controller and 220V mains electricity, and the main controller can be a computer or other conventional known device that can be controlled.

[0028] In use: the mounting frame 1 is moved to the surface of the pipeline 2, the motor 18 is started, the support shaft 17 is driven to rotate, the support shaft 17 drives the first gear 16 to rotate, the first gear 16 drives the second gear 10 to rotate, the second gear 10 drives the rotating block 9 to rotate, the rotating block 9 drives the second bevel gear 8 to rotate, the second bevel gear 8 drives the first bevel gear 4 to rotate, the first bevel gear 4 drives the threaded sleeve 3 to rotate, the threaded sleeve 3 drives the screw rod 5 to move up and down inside it, the screw rod 5 moves up and down to drive the support 6 to move, the support 6 drives the universal wheel 7 to move, the position of the universal wheel 7 is adjusted according to the outer diameter of the pipeline 2, so that the universal wheel 7 is lapped on the surface of the pipeline 2, the extension cylinder 14 is driven to elongate the output end, so that the infrared thermal imager 15 moves up and down, the infrared thermal imager 15 is started, the data is adjusted and preheating is completed, then the surface of the pipeline 2 is scanned by the infrared thermal imager 15, the handle 19 is pulled, the mounting frame 1 is moved by the handle 19, so that the universal wheel 7 moves on the surface of the pipeline 2, and the surface of the pipeline 2 is completely scanned, finally the thermal image is analyzed to find the area with high temperature, that is, the corrosion area.

[0029] In summary, the infrared corrosion detection device for external corrosion of the metal under the thermal insulation layer drives the rotating block 9 to rotate to drive the second bevel gear 8 to rotate, the second bevel gear 8 drives the first bevel gear 4 to rotate, the first bevel gear 4 drives the threaded sleeve 3 to rotate, the threaded sleeve 3 drives the screw rod 5 to move up and down inside it, the screw rod 5 moves up and down to drive the support 6 and the universal wheel 7 to move, so that the universal wheel 7 is lapped on the surface of the pipeline 2, the device avoids the handheld infrared thermal imager 15 to detect on the surface of the pipeline 2, ensures that the distance between the infrared thermal imager 15 and the pipeline 2 remains consistent during detection, thereby improving the accuracy of scanning, and the device can also be adjusted according to the outer diameter of the pipeline 2, so that it can move on the surface of the pipeline 2 with different diameters, thereby improving the adaptability of the device.

[0030] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0031] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. An apparatus for detecting infrared corrosion of an outer metal corrosion under thermal insulation layer, comprising a mounting frame (1), characterized in that, The inside of the mounting frame (1) is rotationally provided with a threaded sleeve (3), the surface of the threaded sleeve (3) is fixedly provided with a first bevel gear (4), the inside of the threaded sleeve (3) is threadedly provided with a screw rod (5), one end of the screw rod (5) close to the center of the mounting frame (1) is fixedly provided with a support (6), the inside of the support (6) is fixedly provided with a universal wheel (7), the surface of the universal wheel (7) is overlaply provided with a pipeline (2), the inside of the mounting frame (1) is rotationally provided with a rotating block (9), the front side of the rotating block (9) is fixedly provided with a second bevel gear (8), the second bevel gear (8) and the first bevel gear (4) are meshingly connected, the surface of the mounting frame (1) is provided with a driving assembly, and the top of the mounting frame (1) is provided with a detection assembly.

2. The apparatus for detecting external corrosion of a metal under thermal insulation by infrared corrosion according to claim 1, wherein The driving assembly comprises a motor (18) fixedly arranged on the front side of the mounting frame (1), the output end of the motor (18) is fixedly provided with a support shaft (17), the surface of the support shaft (17) is fixedly provided with a first gear (16), the surface of the first gear (16) is meshingly provided with a second gear (10), and the second gear (10) and the rotating block (9) are fixedly connected.

3. The apparatus for detecting external corrosion of a metal under thermal insulation according to claim 1, wherein The detection assembly comprises a support frame (13) fixedly arranged on the top of the mounting frame (1), the top of the support frame (13) is fixedly provided with a telescopic air cylinder (14), the output end of the telescopic air cylinder (14) extends to the inside of the support frame (13) through the support frame (13) and is fixedly provided with an infrared thermal imager (15).

4. The apparatus for detecting external corrosion of a metal under thermal insulation according to claim 1, wherein The surface of the mounting frame (1) is fixedly provided with a handle (19), and the number of the handle (19) is two.

5. The apparatus for detecting corrosion of the outer metal under thermal insulation according to claim 1, wherein One end of the screw rod (5) away from the center of the mounting frame (1) is fixedly provided with a connecting plate (11), the bottom of the connecting plate (11) is fixedly provided with a limiting rod (12), and the limiting rod (12) and the mounting frame (1) are in sliding connection.

6. The apparatus for detecting corrosion of the outer metal under thermal insulation according to claim 1, wherein The number of the universal wheel (7) is three, and the three universal wheels (7) are circularly arranged.

7. The apparatus for detecting external corrosion of a metal under thermal insulation according to claim 5, wherein The number of the limiting rod (12) is two, and the two limiting rods (12) are symmetrically distributed.

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