Device for detecting peel strength of anticorrosive coating of conveying pipeline

Abstract

The utility model discloses a device for detecting the peel strength of an anticorrosive coating of a conveying pipeline, which belongs to the technical field of pipeline detection, and comprises an arc-shaped rack, a sliding block, two cutters and a connecting plate, the sliding block is connected to the arc-shaped rack in a sliding manner, the two cutters are symmetrically connected to the connecting plate in a sliding manner, the connecting plate is provided with scale marks, and the scale marks are arranged on the arc-shaped rack. The zero point of the scale line is located at the midpoint line of the connecting plate; the device can prevent the edge of the spline from inclining.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline inspection technology, and in particular relates to a device for detecting the peel strength of the anti-corrosion coating of a transport pipeline. Background Technology

[0002] The peel strength test of pipeline anti-corrosion coating is a test to detect the adhesion between the anti-corrosion coating and the steel pipe. It is mainly used to evaluate the quality and performance of the anti-corrosion coating. This test evaluates the adhesion strength between the anti-corrosion coating and the steel pipe by measuring the force required for the anti-corrosion coating to peel off. Before the test, it is necessary to manually draw a strip that meets the requirements on the anti-corrosion coating. Since the strip has a certain length, the edge of the strip is not smooth and is prone to skewing when it is drawn. A structure that can avoid the skewing of the strip edge is proposed. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a device for detecting the peel strength of the anti-corrosion coating on a transport pipeline, thus solving the aforementioned problems.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a device for detecting the peel strength of the anti-corrosion layer of a conveying pipeline, comprising an arc-shaped frame, and further comprising: a slider, a cutter, and a connecting plate. The slider is slidably connected to the arc-shaped frame, and the two cutters are symmetrically slidably connected to the connecting plate. The connecting plate is provided with scale lines, and the zero point of the scale line is located at the midpoint of the connecting plate.

[0005] Beneficial effects

[0006] This invention provides a device for detecting the peel strength of the anti-corrosion coating of a pipeline, which has the following advantages compared with the prior art:

[0007] The user presses the curved frame, arc-shaped and facing downwards, firmly onto the anti-corrosion layer of the pipe. Simultaneously, multiple positioning cylinders are also attached to the anti-corrosion layer. The user then rotates two turntables. The lead screw fixed to the turntable's axis begins to rotate at a constant speed, causing the threaded sliding plate on it to slide at a constant speed. This sliding plate pushes the cutter downwards, gradually piercing the anti-corrosion layer until it penetrates the surface of the pipe's metal substrate. During this process, because the cutter is made of high-hardness steel, it can easily break through the anti-corrosion layer. When it contacts the metal substrate, the cutter cannot cut through it, so the turntable cannot be rotated further, indicating that the cutter has completely broken through the anti-corrosion layer. The user then starts the motor, causing the gear fixed to its output shaft to rotate at a constant speed. Because the gear meshes with the gear ring, the gear begins to roll on the gear ring. This drives the slider to slide along the arc surface of the arc-shaped frame, meaning the slider begins to move in a circular motion around the pipe. At this time, because the cutter is in the anti-corrosion layer, the slider's movement allows the cutter to smoothly cut the anti-corrosion layer, thus avoiding uneven and skewed edges. Then, when the slider moves to the side of the arc-shaped frame, the user can start the motor again, causing the slider to slide and reset. The user can then place the cutter in the limit frame and press the pressure head. At this time, the cutter begins to slide along its connection with the limit frame, and its sliding direction is perpendicular to the arc-shaped frame, thus inserting the cutter into the anti-corrosion layer. Similarly, after the cutter contacts the pipe's metal substrate, the pressure head is stopped. At this point, with the cutter and its cooperation, a strip can be cut on the anti-corrosion layer. The user can then peel off the end of the strip and use a pipe anti-corrosion layer strength testing machine to clamp the end for testing. Attached Figure Description

[0008] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0009] Figure 2 This is an enlarged schematic diagram of the structure of area A of this utility model.

[0010] Figure 3 This is a side view of the structure of this utility model.

[0011] Figure 4 This is a top view of the structure of this utility model.

[0012] Figure reference numerals: Arc frame 101, slider 201, cutter 202, connecting plate 203, screw 204, slide plate 205, lead screw 206, guide rod 207, turntable 208, gear ring 209, gear 301, motor 302, positioning cylinder 303, limit frame 304, cutter 305, pressure head 306. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0014] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0015] Please see Figures 1-4 This invention provides an embodiment of a device for detecting the peel strength of the anti-corrosion layer of a conveying pipeline, comprising an arc-shaped frame 101, a slider 201, a cutter 202, and a connecting plate 203. The slider 201 is slidably connected to the arc-shaped frame 101, and the two cutters 202 are symmetrically slidably connected to the connecting plate 203. The connecting plate 203 is provided with scale lines, and the zero point of the scale lines is located at the midpoint of the connecting plate 203.

[0016] For the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific cutter 202 described in the above embodiments. For example, the blade of the cutter 202 should be made of high-hardness steel. The purpose of this setting is to facilitate the rapid sliding of the anti-corrosion layer by the cutter 202. The device should be used with the MK-BL-F type computer-controlled anti-corrosion layer peel strength tester.

[0017] Specifically, the cutter 202 is threaded with a screw 204, which abuts against the connecting plate 203 to fix the cutter 202 to the connecting plate 203. When it is necessary to adjust the width of the strip, the user can slide the two cutters 202 to the corresponding positions according to the scale lines on the connecting plate 203 and tighten the screw 204 to make them abut against the connecting plate 203, so as to avoid the cutter 202 slipping when cutting the anti-corrosion layer, resulting in uneven edges of the cut strip.

[0018] For the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific screw 204 described in the above embodiments. For example, the surface of the screw 204 that contacts the connecting plate 203 should be set as a sharp protrusion. The purpose of this setting is to increase the stability of the contact between the screw 204 and the connecting plate 203, thereby preventing the cutter 202 from shifting after penetrating the anti-corrosion layer.

[0019] Specifically, two connecting plates 203 are respectively fixedly connected to a sliding plate 205, the sliding plate 205 is threadedly connected to a lead screw 206, and the lead screw 206 is rotatably connected to the slider 201.

[0020] For the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific lead screw 206 described in the above embodiments. For example, the lead screw 206 should be a lead screw with a self-locking effect. The purpose of this setting is to facilitate the increase of the limiting effect on the slide plate 205 with threaded connection on it.

[0021] Specifically, the slide plate 205 is slidably connected to the guide rod 207, the guide rod 207 is fixedly connected to the slider 201, and the top of the lead screw 206 is fixedly connected to the turntable 208.

[0022] Regarding the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific guide rod 207 described in the above embodiments. For example, the guide rod 207 is provided with a damping rubber ring. The purpose of this setting is to increase the damping of the sliding plate 205 through this setting, so that it can slide smoothly.

[0023] Specifically, gear rings 209 are fixedly connected to both sides of the arc-shaped frame 101, and gears 301 are meshed on the two gear rings 209. The gears 301 are fixedly connected to the output shaft of the motor 302, and the motor 302 is fixedly connected to the slider 201.

[0024] For the above examples, those skilled in the art should know that when implementing the above technical solutions, it is not limited to the specific motor 302 described in the above embodiments. For example, the motor 302 should be a motor with a self-locking effect. The purpose of this setting is to prevent the output shaft of the motor from reversing under the action of external force after it stops.

[0025] Specifically, multiple positioning cylinders 303 are symmetrically fixedly connected to both sides of the arc-shaped frame 101, and the positioning cylinders 303 are fitted with an anti-slip rubber layer.

[0026] For the above examples, those skilled in the art should know that the implementation of the above technical solutions is not limited to the specific positioning cylinder 303 described in the above embodiments. For example, the positioning cylinder 303 may be provided with an adhesive layer so that the positioning cylinder 303 can be bonded to the anti-corrosion layer of the pipe through the adhesive layer, thereby temporarily fixing the arc-shaped frame 101.

[0027] Specifically, a limiting frame 304 is fixedly connected to one side of the arc-shaped frame 101. The cutter 305 is inserted into the through groove of the limiting frame 304 to guide the cutter 305 to slide. The length of the bottom blade of the cutter 305 should match the distance between the two cutters 202. That is, after adjusting the distance between the two 202, the user should replace the cutter 305 with one of the corresponding width. A pressure head 306 is fixedly connected to the top of the cutter 305. The cuts made by the cutter 305 on the anti-corrosion layer should be between the cuts made by the two cutters 202 and be interconnected.

[0028] Regarding the above examples, those skilled in the art should understand that the implementation of the above technical solutions is not limited to the specific pressure head 306 described in the above embodiments. For example, a spring may be provided between the pressure head 306 and the limiting frame 304, with the two ends of the spring fixedly connected to the limiting frame 304 and the pressure head 306, respectively. The purpose of this arrangement is that when the user presses the pressure head 306 so that the bottom blade of the pressure head 306 inserts into the anti-corrosion layer, the pressure head 306 can quickly spring back to its original position under the action of the spring when the user stops pressing the pressure head 306.

[0029] In this embodiment of the invention, the user presses the arc-shaped frame 101, with its arc surface facing downwards, onto the anti-corrosion layer of the pipe. Simultaneously, multiple positioning cylinders 303 are attached to the anti-corrosion layer. The user can then rotate the two turntables 208. At this point, the lead screw 206, fixedly connected to the axis of the turntable 208, begins to rotate at a constant speed, causing the threaded sliding plate 205 on it to slide at a constant speed. This slide plate 205 then pushes the cutter 202 downwards, gradually piercing the anti-corrosion layer until the cutter 202 penetrates the pipe. On the surface of the metal substrate, during this process, because the cutter 202 is made of high-hardness steel, it can easily break through the anti-corrosion layer. When it comes into contact with the metal substrate, the cutter 202 cannot cut through the metal substrate, so the turntable 208 cannot continue to rotate. This indicates that the cutter 202 has completely broken through the anti-corrosion layer. Then the user can start the motor 302 to make the gear 301 fixedly connected to its output shaft rotate at a constant speed. At this time, because the gear 301 is meshed with the gear ring 209, the gear 301 can start to mesh with the gear ring 209. The slider 201 rolls upwards, driving it to slide along the arc surface of the arc-shaped frame 101. That is, the slider 201 begins to move in a circular motion around the pipe. Since the cutter 202 is within the anti-corrosion layer, the sliding of the slider 201 allows the cutter 202 to smoothly cut through the anti-corrosion layer, thus avoiding uneven or skewed edges. Then, when the slider 201 moves to the side of the arc-shaped frame 101, the user can restart the motor 302, causing the slider 201 to slide back to its original position. The user can then place the cutter 305... Placed in the limiting frame 304 and the pressure head 306 is pressed, the cutter 305 begins to slide along the connection between itself and the limiting frame 304, and its sliding direction is perpendicular to the arc-shaped frame 101, so that the cutter 305 is inserted into the anti-corrosion layer. Similarly, after the cutter 305 contacts the metal substrate of the pipe, the pressure head 306 is stopped. At this time, with the cooperation of the cutter 305 and the cutter 202, a strip can be cut on the anti-corrosion layer. Then the user can peel off the end of the strip and use the pipe anti-corrosion layer strength testing machine to clamp the end for testing.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] The term "fixed connection" as used in this application refers to a connection in which parts or components are fixed without any relative movement. This includes both detachable and non-detachable connections.

[0032] (1) Detachable connection: The components are fixed together using screws, splines, wedges, etc. This type of connection can be disassembled during maintenance without damaging the parts. However, the specifications of the connecting parts used must be correct (such as the length of the bolts, keys, wedges) and properly tightened.

[0033] (2) Non-removable connections: These mainly refer to welding, riveting, and tenon joints. Since disassembly requires forging, sawing, or oxyacetylene cutting for repair or replacement, the parts generally cannot be reused. At the same time, attention should be paid to process quality, technical inspection, and remedial measures (such as correction and polishing) during connection.

[0034] The sliding connection referred to in this application means that the component can slide along a linear trajectory, and the hinge referred to in this application means that the component can rotate along an axial constraint.

[0035] In some cases, the sliding connection and hinge referred to in this application may also be damped, enabling the component to maintain in the desired position.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the strength of the coating of a pipe, comprising an arc-shaped frame (101), characterized in that, Also include: The slider (201), cutter (202) and connecting plate (203), the slider (201) is connected on the arc-shaped frame (101), two cutter (202) symmetry is connected on the connecting plate (203), the connecting plate (203) is equipped with scale line, and scale line zero point is at the connecting plate (203) midpoint line.

2. The apparatus for detecting the strength of the coating layer peeling of a transport pipeline according to claim 1, wherein The cutter (202) is connected with screw (204) on the screw, the screw (204) is close to the connecting plate (203), is used for fixing cutter (202) on the connecting plate (203).

3. The apparatus for detecting the strength of the coating layer peeling of a transport pipeline according to claim 1, wherein The connecting plate (203) is respectively fixedly connected with slide plate (205), the slide plate (205) is connected on the screw rod (206), the screw rod (206) is rotatably connected with slider (201).

4. The apparatus for detecting the strength of coating peeling of a transport pipeline according to claim 3, wherein The slide plate (205) is connected on the guide rod (207), the guide rod (207) is fixedly connected with slider (201), and the screw rod (206) top is fixedly connected with rotary table (208).

5. The apparatus for detecting the strength of coating peeling of a transport pipeline according to claim 1, wherein The arc-shaped frame (101) both sides are fixedly connected with gear ring (209), two gear ring (209) are connected with gear (301), the gear (301) is fixedly connected on the output shaft of motor (302), and the motor (302) is fixedly connected with slider (201).

6. The apparatus for detecting the strength of coating peeling of a transport pipeline according to claim 1, wherein The arc-shaped frame (101) both sides symmetry are fixedly connected with a plurality of positioning cylinder (303), the positioning cylinder (303) is equipped with antiskid rubber layer.

7. The apparatus for detecting the strength of coating peeling of a transport pipeline according to claim 1, wherein Arc-shaped frame (101) one side is fixedly connected with limit frame (304), and the cutter (305) is inserted in the through slot of limit frame (304).

8. The apparatus for detecting the strength of coating peeling of a transport pipeline according to claim 1, wherein The blade of cutter (202) should select high hardness steel material.

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