Thickness detection device for anticorrosive coating on inner wall of pipeline

Abstract

The utility model relates to the technical field of pipeline detection, in particular to a pipeline inner wall anticorrosive coating thickness detection device, which is characterized in that abutting plates are distributed on the outer side of a cross rod in an equal-fillet manner, connecting rods are hinged to the left side and the right side of the inner arc wall of each abutting plate, the connecting rods are movably arranged in movable grooves formed in the outer ring wall of the cross rod, and movable blocks are movably arranged in the cross rod; one end of the connecting rod is hinged to the moving block, an adaptive mechanism connected with the moving block is arranged in the cross rod, the fixing frames are fixedly arranged on the outer arc walls of the abutting plates respectively, and rolling wheels are rotationally connected to the fixing frames through shafts and bearings and can support the detection probe in the detection process and enable the detection probe to be located at the circle center position of the circular pipeline. And the accuracy of the detection result and the convenience in the detection process are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline detection, in particular to a device for detecting the thickness of an anti-corrosion coating on an inner wall of a pipeline. Background Art

[0002] Anti-corrosion coating refers to a covering layer applied on the metal surface to isolate it from the surrounding medium to control pipeline corrosion. It has good electrical insulation and water-proof properties, strong adhesion to the pipeline surface, resistance to chemical damage and certain mechanical strength. When using a coating thickness detection device to detect the thickness of the anti-corrosion coating on the inner wall of the pipeline, it is necessary to extend the detection probe into the pipeline. However, the detection probe has no support in the pipeline, which not only makes the detection probe deviate to one side of the inner wall of the pipeline, but also when the pipeline is picked up and moved, the detection position of the detection probe will also shift at will, making the detection results and the detection process inconvenient. Therefore, there is an urgent need for a device for detecting the thickness of the anti-corrosion coating on the inner wall of the pipeline. Utility Model Content

[0003] The utility model aims to solve the defects and shortcomings of the prior art and provide a pipeline inner wall anti-corrosion coating thickness detection device with a reasonable design to solve the above problems.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: it comprises a crossbar, a detection probe, a connecting wire and a device body, one end of the crossbar is fixedly provided with a detection probe, the other end of the crossbar is fixedly provided with a connecting wire, the connecting wire is connected to the device body, and the detection probe is electrically connected to the device body;

[0005] It also contains:

[0006] The contact plates are several in number and are arranged on the outside of the crossbar with equal fillets. The left and right sides of the inner arc wall of the contact plates are hinged with connecting rods, which are movably arranged in the movable grooves provided on the outer ring wall of the crossbar;

[0007] Moving blocks, there are two moving blocks, both of which are movably arranged in the cross bar, one end of the connecting rod is hingedly arranged on the moving block, and an adapting mechanism connected to the moving block is arranged in the cross bar;

[0008] The fixing frames are in the number of pieces and are respectively fixedly arranged on the outer arc walls of the plurality of abutment plates. Rollers are rotatably arranged on the fixing frames through shafts and bearings.

[0009] Preferably, the adapting mechanism comprises:

[0010] A rotating shaft, the rotating shaft is screwed into the crossbar through a bearing, and a gear is fixedly sleeved on the rotating shaft;

[0011] Moving rods, there are two moving rods, which are respectively fixed on the side walls of the two moving blocks, and the moving rods are movably arranged on the other opposite moving block, and racks are fixedly arranged on the side walls of the moving rods, and the two racks are respectively meshed with the upper and lower sides of the gear;

[0012] A driving rod, wherein the driving rod is fixedly arranged on the moving block on the right side, a spring is movably sleeved on the driving rod, two ends of the spring are respectively connected to the moving block on the right side and the right inner wall of the cross bar, a control rod is fixedly arranged on the right end of the driving rod, and the control rod is movably inserted into a strip-shaped through groove opened on the cross bar.

[0013] Preferably, both ends of the control rod are provided with limit plates through bearing screw sleeves, and the front and rear side walls of the cross bar are fixedly provided with limit rods, and the limit plates are clamped on the limit rods.

[0014] Preferably, guide grooves are provided on the front and rear side walls of the moving rod, guide bars are movably provided in the guide grooves, and the guide bars are fixedly connected to the moving block.

[0015] Preferably, the roller upper fixing sleeve is provided with a buffer sleeve.

[0016] Compared with the prior art, the beneficial effect of the utility model is that the pipeline inner wall anti-corrosion coating thickness detection device described in the utility model can provide support for the detection probe during the detection process and make it located at the center of the circular pipeline, thereby improving the accuracy of the detection results and the convenience of the detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a cross-sectional view of the cross bar in the utility model.

[0019] Figure 3 It is an exploded view of the parts of the moving block, gear, moving rod, rack and guide bar in the utility model.

[0020] Figure 4 It is an exploded view of the parts of the cross bar, the control rod and the limit rod in the utility model.

[0021] Figure 5 It is an exploded view of the parts of the fixing frame, the roller and the buffer sleeve in the utility model.

[0022] Description of reference numerals:

[0023] Cross bar 1, detection probe 2, connecting line 3, device body 4, contact plate 5, connecting rod 6, movable groove 7, moving block 8, adapter mechanism 9, rotating shaft 9-1, gear 9-2, moving rod 9-3, rack 9-4, driving rod 9-5, spring 9-6, control rod 9-7, fixing frame 10, roller 11, limit plate 12, limit rod 13, guide groove 14, guide bar 15, buffer sleeve 16. DETAILED DESCRIPTION

[0024] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. The preferred embodiments in the description are only used as examples, and all other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of the utility model.

[0025] like Figure 1-Figure 5 As shown, this specific embodiment adopts the following technical solution: it comprises a cross bar 1, a detection probe 2, a connecting wire 3 and a device body, one end of the cross bar 1 is fixedly provided with the detection probe 2 by bolts, the other end of the cross bar 1 is fixedly provided with the connecting wire 3, the connecting wire 3 is connected to the device body, and the detection probe 2 is electrically connected to the device body 4;

[0026] It also contains:

[0027] A plurality of contact plates 5 are provided at the outer side of the cross bar 1 with equal fillet angles. Connecting rods 6 are hingedly provided on the left and right sides of the inner arc wall of the contact plate 5. The connecting rods 6 are movably provided in movable grooves 7 provided on the outer ring wall of the cross bar 1.

[0028] Moving blocks 8, there are two moving blocks 8, both of which are movably arranged in the cross bar 1, one end of the connecting rod 6 is hingedly arranged on the moving block 8, and an adapting mechanism 9 connected to the moving block 8 is arranged in the cross bar 1;

[0029] A fixing frame 10, wherein the fixing frames 10 are several in number and are respectively fixed on the outer arc walls of the several abutting plates 5 by bolts. A roller 11 is screwed on the fixing frame 10 through a shaft and a bearing. A buffer sleeve 16 is fixed on the roller 11. The buffer sleeve 16 can provide a buffer between the roller 11 and the inner wall of the pipe to prevent the roller 11 from rotating on the inner wall of the pipe and causing damage;

[0030] The adapting mechanism 9 comprises:

[0031] A rotating shaft 9-1, wherein the rotating shaft 9-1 is screwed into the crossbar 1 through a bearing, and a rotating gear 9-2 is fixedly sleeved on the rotating shaft 9-1;

[0032] Moving rods 9-3, there are two moving rods 9-3, which are respectively fixed on the side walls of the two moving blocks 8 by bolts, and the moving rods 9-3 are movably inserted into the other opposite moving block 8, and guide grooves 14 are provided on the front and rear side walls of the moving rods 9-3, and guide bars 15 are movably provided in the guide grooves 14, and the guide bars 15 are fixedly connected to the moving blocks 8, and the guide bars 15 can provide auxiliary guidance for the moving rods 9-3 to improve the stability of the moving rods 9-3 when moving, and racks 9-4 are fixedly provided on the side walls of the moving rods 9-3, and the two racks 9-4 are respectively meshed with the upper and lower sides of the rotating gear 9-2;

[0033] A driving rod 9-5, wherein the driving rod 9-5 is fixedly provided on the moving block 8 on the right side by bolts, a spring 9-6 is movably sleeved on the driving rod 9-5, and both ends of the spring 9-6 are respectively connected to the moving block 8 on the right side and the right inner wall of the cross bar 1, and a control rod 9-7 is fixedly provided on the right end of the driving rod 9-5 by bolts, and the control rod 9-7 is movably passed through a strip-shaped through groove provided on the cross bar 1, and both ends of the control rod 9-7 are provided with limit plates 12 through bearing screw sleeves, and limit rods 13 are fixedly provided on the front and rear side walls of the cross bar 1 by bolts, and the limit plates 12 are clamped on the limit rods 13, and the cooperation of the limit plates 12 and the limit rods 13 can realize the limiting effect on the control rod 9-7, so that when the detection device is in an idle state, the resistance plate 5 can maintain the resistance with the cross bar 1 for easy storage.

[0034] When using the utility model, the detection probe 2 and the cross bar 1 are extended into the pipeline, and the limit plate 12 is turned over to disengage the limit plate 12 from the limit rod 13. At this time, the spring 9-6 applies a pulling force to the right moving block 8, so that the right moving block 8 moves to the right, and the moving rod 9-3 fixed thereto moves to the right. Through the engagement of the rotating gear 9-2 and the rack 9-4, the moving blocks 8 on both sides can move synchronously in opposite directions and move away from each other. Under the action of the connecting rod 6, the contact plate 5 will move in the direction away from the cross bar 1, and the roller 11 The buffer sleeve 16 on the pipe contacts the inner wall of the pipe, which not only supports the cross bar 1 and the detection probe 2 in the pipe, but also enables the detection probe 2 to be located at the center of the pipe. In the process of taking or moving the pipe, the friction between the buffer sleeve 16 and the inner wall of the pipe can effectively prevent the detection probe 2 from being randomly shifted. If the detection probe 2 is to be moved deeper into the pipe, the connecting line 3 can be pushed toward the inside of the pipe, and the roller 11 can rotate accordingly, so that the detection probe 2 can remain at the center of the pipe during the movement.

[0035] After adopting the above structure, the beneficial effects of this specific implementation are as follows:

[0036] 1. Through the cooperation of the contact plate 5, the connecting rod 6, the movable groove 7, the moving block 8, the adapting mechanism 9, the fixing frame 10 and the roller 11, the detection probe 2 can be supported during the detection process and located at the center of the circular pipe, thereby improving the accuracy of the detection result and the convenience of the detection process;

[0037] 2. The limiting plate 12 and the limiting rod 13 cooperate to limit the control rod 9-7, so that when the detection device is in an idle state, the abutment plate 5 can maintain abutment with the cross bar 1 for easy storage.

[0038] For those skilled in the art, they can modify the technical solutions recorded in the aforementioned embodiments and make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A device for detecting the thickness of an anti-corrosion coating on the inner wall of a pipeline, comprising a crossbar (1), a detection probe (2), a connecting wire (3) and a device body, wherein one end of the crossbar (1) is fixedly provided with the detection probe (2), the other end of the crossbar (1) is fixedly provided with the connecting wire (3), the connecting wire (3) is connected to the device body, and the detection probe (2) is electrically connected to the device body (4); Features: It also contains: A plurality of contact plates (5) are provided at equal angles on the outside of the crossbar (1); connecting rods (6) are hingedly provided on both left and right sides of the inner arc wall of the contact plate (5); the connecting rods (6) are movably provided in a movable groove (7) provided on the outer ring wall of the crossbar (1); There are two moving blocks (8), both of which are movably arranged in the cross bar (1); one end of the connecting rod (6) is hingedly arranged on the moving block (8); and an adapting mechanism (9) connected to the moving block (8) is arranged in the cross bar (1); The fixing frames (10) are in plurality and are respectively fixedly arranged on the outer arc walls of the plurality of contact plates (5). The fixing frames (10) are provided with rollers (11) which are rotatably connected with shafts and bearings.

2. The device for detecting the thickness of the anti-corrosion coating on the inner wall of a pipeline according to claim 1 is characterized in that: The adapting mechanism (9) comprises: A rotating shaft (9-1), the rotating shaft (9-1) is screwed into the crossbar (1) via a bearing, and a rotating gear (9-2) is fixedly sleeved on the rotating shaft (9-1); A moving rod (9-3), wherein the moving rod (9-3) is in two pieces and is respectively fixedly arranged on the side walls of the two moving blocks (8), and the moving rod (9-3) is movably arranged on the other opposite moving block (8), and a rack (9-4) is fixedly arranged on the side wall of the moving rod (9-3), and the two racks (9-4) are respectively meshed with the upper and lower sides of the rotating gear (9-2); A driving rod (9-5) is fixedly arranged on the right moving block (8), a spring (9-6) is movably sleeved on the driving rod (9-5), two ends of the spring (9-6) are respectively connected to the right moving block (8) and the right inner wall of the cross bar (1), a control rod (9-7) is fixedly arranged on the right end of the driving rod (9-5), and the control rod (9-7) is movably inserted into a strip-shaped through groove opened on the cross bar (1).

3. The device for detecting the thickness of the anti-corrosion coating on the inner wall of a pipeline according to claim 2 is characterized in that: Both ends of the control rod (9-7) are provided with limit plates (12) through bearing screw sleeves, and the front and rear side walls of the cross bar (1) are fixedly provided with limit rods (13), and the limit plates (12) are clamped on the limit rods (13).

4. The device for detecting the thickness of the anti-corrosion coating on the inner wall of a pipeline according to claim 2 is characterized in that: The front and rear side walls of the moving rod (9-3) are both provided with guide grooves (14), a guide bar (15) is movably arranged in the guide groove (14), and the guide bar (15) is fixedly connected to the moving block (8).

5. The device for detecting the thickness of the anti-corrosion coating on the inner wall of a pipeline according to claim 1 is characterized in that: The upper fixing sleeve of the roller (11) is provided with a buffer sleeve (16).

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