A pulse electronic corrosion detection device for underground and surface pipelines

Abstract

The invention provides a pulse electronic corrosion detection device applied to underground and ground pipelines, and relates to the field of corrosion detection technology, comprising: a connecting mechanism, a corrosion detection mechanism, a self-cleaning mechanism and a positioning mechanism; the connecting mechanism is installed on the outside of the pipeline; the corrosion detection mechanism is installed on the left side of the connecting mechanism; the self-cleaning mechanism is installed on the connecting mechanism; the positioning mechanism is installed on the front side of the connecting mechanism; the two U-shaped mounting frames of the invention can drive two linkage protection frames and two rectangular protection covers to automatically move inward, so that the inner sides of the two rectangular protection covers are automatically contacted, which plays a protective role for the pulse detection probe; the problem that the pulse detection probe needs to be disassembled and placed in a protection box for protection after use, and the pulse detection probe cannot be automatically protected after the corrosion detection is completed, resulting in the installation and disassembly of the pulse detection probe taking up a lot of time, thereby reducing the corrosion detection efficiency of underground or ground pipelines.

Description

Technical Field

[0001] The present invention belongs to the technical field of corrosion detection, and more specifically, particularly relates to a pulse electronic corrosion detection device applied to underground and surface pipelines. Background Art

[0002] ‌Underground pipelines‌ refer to pipelines installed in underground spaces such as mines and water wells, and ‌ground pipelines‌ refer to pipelines laid on the ground or in the air. ‌Pulse corrosion detection of underground and ground pipelines refers to a method of corrosion detection of pipelines using pulse eddy current technology. This method emits a short electromagnetic pulse into the pipeline and then measures the electromagnetic response of the pipeline wall to determine the degree and location of pipeline corrosion.

[0003] The pulse corrosion detection devices currently used still have the following problems:

[0004] 1. The pulse detection probe needs to be disassembled and placed in a protection box for protection after use. The pulse detection probe cannot be automatically protected after the corrosion detection is completed, resulting in the installation and removal of the pulse detection probe taking up a lot of time, reducing the corrosion detection efficiency of underground or surface pipelines;

[0005] 2. Usually lack of self-cleaning structure, resulting in debris attached to the outer wall of the pipeline easily damaging the pulse detection probe. Although some pulse corrosion detection devices are also equipped with cleaning structures, they cannot automatically adjust the cleaning direction and cannot detect other angles of the pipeline during reset, which reduces the corrosion detection accuracy of the pipeline. Summary of the invention

[0006] The disclosed embodiments relate to a pulse electronic corrosion detection device applied to underground and ground pipelines, which comprises a connecting mechanism, a corrosion detection mechanism, a self-cleaning mechanism and a positioning mechanism; two U-shaped mounting frames can drive two linkage protection frames and two rectangular protection covers to automatically move inward, so that the inner sides of the two rectangular protection covers are automatically in contact, thereby protecting the pulse detection probe; the automatic change of the cleaning direction is realized, and the position to be detected of the pipeline can be cleaned in advance, so that debris on the outer wall of the pipeline can be prevented from damaging the pulse detection probe, and it is convenient to detect different positions of the pipeline during resetting, thereby improving the corrosion detection accuracy of the pipeline; the problem that the installation and disassembly of the pulse detection probe takes up a lot of time and the other angles of the pipeline cannot be detected during resetting is solved.

[0007] In a first aspect of the present disclosure, a pulse electronic corrosion detection device for underground and surface pipelines is provided, which is used to detect pipelines; the device comprises: a connecting mechanism, a corrosion detection mechanism, a self-cleaning mechanism and a positioning mechanism; the connecting mechanism is installed on the outside of the pipeline; the corrosion detection mechanism is installed on the left side of the connecting mechanism; the self-cleaning mechanism is installed on the connecting mechanism, and the self-cleaning mechanism is used to pre-clean the position to be detected; the positioning mechanism is installed on the front side of the connecting mechanism, and the positioning mechanism is used to position the self-cleaning mechanism;

[0008] The connection mechanism comprises: a connection bracket, an octagonal guide rod and a U-shaped mounting bracket; there are two octagonal guide rods, and the two octagonal guide rods are fixedly mounted on the connection bracket; there are two U-shaped mounting brackets, and the two U-shaped mounting brackets are slidably mounted on the outside of the two octagonal guide rods;

[0009] The corrosion detection mechanism includes: a mounting frame, a pulse detection probe, a linkage protection frame and a rectangular protective cover; the mounting frame is fixedly installed on the left side of the connecting bracket; the pulse detection probe is fixedly installed on the mounting frame, and the bottom of the pulse detection probe is in contact with the outer wall of the pipeline; there are two linkage protection frames, and the two linkage protection frames are respectively fixedly installed on the left sides of two U-shaped mounting frames; there are two rectangular protective covers, and the two rectangular protective covers are respectively fixedly installed on the inner sides of the two linkage protection frames, and the two rectangular protective covers are respectively located on the front and rear sides of the pulse detection probe.

[0010] In at least some embodiments, the connecting mechanism also includes: a connecting clamping wheel, a connecting shaft A and a driving roller; there are four connecting clamping wheels in total, and every two connecting clamping wheels are rotatably mounted on the outside of a U-shaped mounting frame, and the four connecting clamping wheels are also in contact with the outer wall of the pipeline; the connecting shaft A is rotatably mounted on the connecting bracket; the driving roller is fixedly mounted on the outside of the connecting shaft A, and the driving roller is also in contact with the outer wall of the pipeline.

[0011] In at least some embodiments, the connecting mechanism also includes: a motor and a positioning retaining ring A; the motor is installed on the front side of the connecting bracket by screws, and the output shaft of the motor is also fixedly connected to the front end of the connecting shaft A; the positioning retaining ring A is provided in four groups, and every two groups of positioning retaining rings A are fixedly installed on the outside of a U-shaped mounting frame, and the inner sides of the four groups of positioning retaining rings A are in contact with four connecting clamping wheels.

[0012] In at least some embodiments, the connecting mechanism also includes: a positioning retaining ring B and a coil spring A; there are four positioning retaining rings B, and the four positioning retaining rings B are fixedly installed on the front and rear ends of the two octagonal guide rods; there are four coil springs A, and the four coil springs A are sleeved on the outside of the two octagonal guide rods, and the two ends of the four coil springs A are also connected to two U-shaped mounting frames and four positioning retaining rings B.

[0013] In at least some embodiments, the self-cleaning mechanism includes: a connecting shaft B and a self-cleaning frame; the connecting shaft B is rotatably mounted on a connecting bracket; the self-cleaning frame is fixedly mounted on the outside of the connecting shaft B, and the front and rear sides of the self-cleaning frame are in contact with the connecting bracket; two groups of arc-shaped limit grooves A are opened on the front side of the self-cleaning frame, and the number of arc-shaped limit grooves A in each group is two.

[0014] In at least some embodiments, the self-cleaning mechanism also includes: a cleaning brush roller, a positioning screw and a synchronous pulley A; there are two cleaning brush rollers in total, and the two cleaning brush rollers are rotatably installed on the self-cleaning frame, and the cleaning brush roller on the left is in contact with the outer wall of the pipeline; there are two positioning screws in total, and the two positioning screws are threadedly connected to the self-cleaning frame, and the inner ends of the two positioning screws are in contact with the two cleaning brush rollers; the synchronous pulley A is rotatably installed on the rear end of the connecting shaft B, and the inner wall of the synchronous pulley A is provided with two arc-shaped limit grooves B.

[0015] In at least some embodiments, the self-cleaning mechanism also includes: a synchronous pulley B, a synchronous belt and a positioning retaining ring C; the synchronous pulley B is fixedly mounted on the rear end of the connecting shaft A; the synchronous belt is mounted on the synchronous pulley A and the synchronous pulley B; there are two positioning retaining rings C, and the two positioning retaining rings C are fixedly mounted on the outside of the connecting shaft B, and the inner sides of the two positioning retaining rings C are in contact with the synchronous pulley A.

[0016] In at least some embodiments, the self-cleaning mechanism also includes: a movable positioning block and a coil spring B; there are two movable positioning blocks in total, and the two movable positioning blocks are slidably installed inside the connecting shaft B; the outer ends of the two movable positioning blocks are provided with rounded corners, and the outer ends of the two movable positioning blocks are inserted into two arc-shaped limit grooves B; the coil spring B is installed inside the connecting shaft B, and the two ends of the coil spring B are also connected to the two movable positioning blocks.

[0017] In at least some embodiments, the positioning mechanism includes: a U-shaped positioning seat and a movable positioning rod; the U-shaped positioning seat is fixedly installed on the front side of the connecting bracket; there are two movable positioning rods in total, and the two movable positioning rods are slidably installed on the U-shaped positioning seat and the connecting bracket; the inner ends of the two movable positioning rods are provided with rounded corners, and the inner ends of the two movable positioning rods are inserted into a group of arc-shaped limit grooves A.

[0018] In at least some embodiments, the positioning mechanism also includes: a force-bearing plate and a coil spring C; the force-bearing plate is fixedly mounted on the outside of two movable positioning rods; there are two coil springs C in total, and the two coil springs C are sleeved on the outside of the two movable positioning rods, and the two ends of the two coil springs C are also connected to the U-shaped positioning seat and the force-bearing plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In the present invention, when the staff pulls the two U-shaped mounting frames outward, the four connecting clamping wheels move outward, which is convenient for connecting the four connecting clamping wheels to the pipeline to be detected; when the motor drives the driving roller to rotate counterclockwise, the four connecting clamping wheels move to the left along the pipeline, and when the motor drives the driving roller to rotate clockwise, the four connecting clamping wheels move to the right along the pipeline, which is convenient for detecting pipelines at different positions.

[0021] 2. The present invention has an automatic detection effect on the pipeline. When the four connecting clamping wheels are in contact with the pipeline, the two U-shaped mounting frames can drive the two linked protection frames and the two rectangular protection covers to automatically move outward, so that the two rectangular protection covers are automatically separated from the pulse detection probe; when the four connecting clamping wheels are separated from the pipeline, the two U-shaped mounting frames can drive the two linked protection frames and the two rectangular protection covers to automatically move inward, so that the inner sides of the two rectangular protection covers are automatically in contact, thereby protecting the pulse detection probe.

[0022] 3. In the present invention, when the motor drives the connecting shaft A to rotate clockwise, the synchronous pulley A can rotate along with the synchronous pulley B under the action of the synchronous belt; when the synchronous pulley A rotates, the connecting shaft B and the self-cleaning frame can rotate along with the synchronous pulley A under the action of the two arc-shaped limit grooves B and the two movable positioning blocks; when the cleaning brush roller on the right side contacts the outer wall of the pipeline, the connecting shaft B and the self-cleaning frame stop rotating, and when the synchronous pulley A continues to rotate, the synchronous pulley A can squeeze the two movable positioning blocks to move inward, so as to ensure that the cleaning brush roller on the right side is always in contact with the outer wall of the pipeline;

[0023] In addition, when the motor drives the connecting shaft A to rotate counterclockwise, the connecting shaft B and the self-cleaning frame can rotate simultaneously with the synchronous pulley A under the action of the two arc-shaped limit grooves B and the two movable positioning blocks; when the cleaning brush roller on the left side contacts the outer wall of the pipeline, the connecting shaft B and the self-cleaning frame stop rotating, and when the synchronous pulley A continues to rotate, the synchronous pulley A can squeeze the two movable positioning blocks to move inward, ensuring that the cleaning brush roller on the left side is always in contact with the outer wall of the pipeline, realizing the automatic change of the cleaning direction, and can pre-clean the position to be inspected of the pipeline to avoid damage to the pulse detection probe by debris on the outer wall of the pipeline, which is convenient for detecting different angles of the pipeline during resetting, thereby improving the corrosion detection accuracy of the pipeline; the setting of the two positioning screws makes it convenient for the staff to appropriately adjust the angles of the two cleaning brush rollers, so as to make full use of the two cleaning brush rollers.

[0024] 4. In the present invention, when the synchronous pulley A drives the connecting shaft B and the self-cleaning frame to rotate under the action of two movable positioning blocks and the coil spring B, the self-cleaning frame squeezes the two movable positioning rods to move outward, so that the two movable positioning rods are separated from the corresponding set of arc-shaped limit grooves A; when the connecting shaft B and the self-cleaning frame rotate to a suitable position, the two movable positioning rods are inserted into another set of arc-shaped limit grooves A under the action of two coil springs C, which plays an elastic positioning role on the self-cleaning frame, so that the self-cleaning frame is in a relatively stable state after rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0026] The drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention.

[0027] In the attached picture:

[0028] Figure 1 A three-dimensional structural schematic diagram of the present invention is shown.

[0029] Figure 2 The present invention is shown Figure 1 Schematic diagram of the rear side perspective structure.

[0030] Figure 3 The schematic diagram of the structure of the connecting mechanism of the present invention is shown.

[0031] Figure 4 The present invention is shown Figure 1 Schematic diagram of the main viewing angle structure.

[0032] Figure 5 The present invention is shown Figure 2 Schematic diagram of the local enlarged structure of area A in the middle.

[0033] Figure 6The schematic diagram of the structure of the self-cleaning mechanism of the present invention is shown.

[0034] Figure 7 The present invention is shown Figure 6 Schematic diagram of the local enlarged structure of area B in the middle.

[0035] Figure 8 The present invention is shown Figure 2 Schematic diagram of the local enlarged structure of the C area in the middle.

[0036] Fig. 9 The present invention is shown Figure 1 Schematic diagram of the central cut structure.

[0037] Fig.10 The present invention is shown Fig. 9 Schematic diagram of the local enlarged structure of area D in the middle.

[0038] List of reference numerals:

[0039] 100, connecting mechanism; 101, connecting bracket; 102, octagonal guide rod; 103, U-shaped mounting frame; 104, connecting clamping wheel; 105, connecting shaft A; 106, driving roller; 107, motor; 108, positioning retaining ring A; 109, positioning retaining ring B; 110, spiral spring A;

[0040] 200, corrosion detection mechanism; 201, mounting frame; 202, pulse detection probe; 203, linkage protection frame; 204, rectangular protection cover;

[0041] 300, self-cleaning mechanism; 301, connecting shaft B; 302, self-cleaning frame; 3021, arc-shaped limit groove A; 303, cleaning brush roller; 304, positioning screw; 305, synchronous pulley A; 3051, arc-shaped limit groove B; 306, synchronous pulley B; 307, synchronous belt; 308, positioning retaining ring C; 309, movable positioning block; 310, spiral spring B;

[0042] 400, positioning mechanism; 401, U-shaped positioning seat; 402, movable positioning rod; 403, force-bearing plate; 404, coil spring C;

[0043] 500. Pipeline. DETAILED DESCRIPTION

[0044] In order to make the purpose, scheme and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of the specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the usual meanings in the art. The same reference numerals in the drawings represent the same components.

[0045] Example: Please refer to Figures 1 to 10 As shown: The present invention provides a pulse electronic corrosion detection device for underground and ground pipelines, which is used to detect pipeline 500; it includes: a connecting mechanism 100, a corrosion detection mechanism 200, a self-cleaning mechanism 300 and a positioning mechanism 400; the connecting mechanism 100 is installed on the outside of the pipeline 500; the corrosion detection mechanism 200 is installed on the left side of the connecting mechanism 100; the self-cleaning mechanism 300 is installed on the connecting mechanism 100, and the self-cleaning mechanism 300 is used to pre-clean the position to be detected; the positioning mechanism 400 is installed on the front side of the connecting mechanism 100, and the positioning mechanism 400 is used to position the self-cleaning mechanism 300.

[0046] In the present disclosure, Figure 1 , Figure 3 and Figure 8 As shown, the connection mechanism 100 includes: a connection bracket 101, an octagonal guide rod 102 and a U-shaped mounting frame 103; there are two octagonal guide rods 102, and the two octagonal guide rods 102 are fixedly mounted on the connection bracket 101; there are two U-shaped mounting frames 103, and the two U-shaped mounting frames 103 are slidably mounted on the outside of the two octagonal guide rods 102; the connection mechanism 100 also includes: a connection clamping wheel 104, a connection shaft A105 and a driving roller 106; there are four connection clamping wheels 104, and every two connection clamping wheels 104 are rotatably mounted on the outside of a U-shaped mounting frame 103, and the four connection clamping wheels 104 are also in contact with the outer wall of the pipeline 500; the connection shaft A105 is rotatably mounted on the connection bracket 101; the driving roller 106 is fixedly mounted on the outside of the connection shaft A105, and the driving roller 106 is also in contact with the outer wall of the pipeline 500; the connection mechanism 1 00 also includes: a motor 107 and a positioning retaining ring A108; the motor 107 is installed on the front side of the connecting bracket 101 by screws, and the output shaft of the motor 107 is also fixedly connected to the front end of the connecting shaft A105; there are four groups of positioning retaining rings A108, and every two groups of positioning retaining rings A108 are fixedly installed on the outside of a U-shaped mounting frame 103, and the inner sides of the four groups of positioning retaining rings A108 are in contact with four connecting clamping wheels 104; the connecting mechanism 100 also includes: a positioning retaining ring B109 and a coil spring A110; there are four positioning retaining rings B109, and the four positioning retaining rings B109 are fixedly installed on the front and rear ends of the two octagonal guide rods 102; there are four coil springs A110, and the four coil springs A110 are sleeved on the outside of the two octagonal guide rods 102, and the two ends of the four coil springs A110 are also connected to the two U-shaped mounting frames 103 and the four positioning retaining rings B109;

[0047] Its specific function is: because every two connecting clamping wheels 104 are rotatably mounted on the outside of a U-shaped mounting frame 103, and the four connecting clamping wheels 104 are also in contact with the outer wall of the pipeline 500, and the two ends of the four spiral springs A110 are also connected to the two U-shaped mounting frames 103 and the four positioning retaining rings B109, when the staff pulls the two U-shaped mounting frames 103 outward, the four connecting clamping wheels 104 move outward, making it convenient to connect the four connecting clamping wheels 104 to the pipeline 500 to be tested; and because the driving roller 106 is in contact with the outer wall of the pipeline 500, and the motor 107 is installed on the front side of the connecting bracket 101 by screws, and the output shaft of the motor 107 is also fixedly connected to the front end of the connecting shaft A105. When the motor 107 drives the driving roller 106 to rotate counterclockwise, the four connecting clamping wheels 104 move to the left along the pipeline 500. When the motor 107 drives the driving roller 106 to rotate clockwise, the four connecting clamping wheels 104 move to the right along the pipeline 500, which is convenient for detecting the pipeline 500 at different positions.

[0048] In the present disclosure, Figure 1 and Figure 5 As shown, the corrosion detection mechanism 200 includes: a mounting frame 201, a pulse detection probe 202, a linkage protection frame 203 and a rectangular protection cover 204; the mounting frame 201 is fixedly mounted on the left side of the connecting bracket 101; the pulse detection probe 202 is fixedly mounted on the mounting frame 201, and the bottom of the pulse detection probe 202 contacts the outer wall of the pipeline 500; there are two linkage protection frames 203, and the two linkage protection frames 203 are respectively fixedly mounted on the left sides of the two U-shaped mounting frames 103; there are two rectangular protection covers 204, and the two rectangular protection covers 204 are respectively fixedly mounted on the inner sides of the two linkage protection frames 203, and the two rectangular protection covers 204 are respectively located on the front and rear sides of the pulse detection probe 202;

[0049] The specific function is as follows: since the pulse detection probe 202 is fixedly mounted on the mounting frame 201, and the bottom of the pulse detection probe 202 contacts the outer wall of the pipeline 500, the pipeline 500 is automatically detected. In addition, since the two linkage protection frames 203 are respectively fixedly mounted on the left side of the two U-shaped mounting frames 103, and the two rectangular protection covers 204 are respectively fixedly mounted on the inner side of the two linkage protection frames 203, and the two rectangular protection covers 204 are respectively located on the front and rear sides of the pulse detection probe 202, when the four connecting clamping wheels 1 04 contacts with the pipeline 500, the two U-shaped mounting frames 103 can drive the two linked protection frames 203 and the two rectangular protection covers 204 to automatically move outward, so that the two rectangular protection covers 204 are automatically separated from the pulse detection probe 202; when the four connecting clamping wheels 104 are separated from the pipeline 500, the two U-shaped mounting frames 103 can drive the two linked protection frames 203 and the two rectangular protection covers 204 to automatically move inward, so that the inner sides of the two rectangular protection covers 204 are automatically in contact, thereby protecting the pulse detection probe 202.

[0050] In the present disclosure, Figure 2 , Figure 6 , Figure 7 , Figure 8 and Fig.10As shown, the self-cleaning mechanism 300 includes: a connecting shaft B301 and a self-cleaning frame 302; the connecting shaft B301 is rotatably mounted on the connecting bracket 101; the self-cleaning frame 302 is fixedly mounted on the outside of the connecting shaft B301, and the front and rear sides of the self-cleaning frame 302 are in contact with the connecting bracket 101; two groups of arc-shaped limit grooves A3021 are opened on the front side of the self-cleaning frame 302, and the number of each group of arc-shaped limit grooves A3021 is two; the self-cleaning mechanism 300 also includes: a cleaning brush roller 303, a positioning screw 30 4 and synchronous pulley A305; there are two cleaning brush rollers 303, and the two cleaning brush rollers 303 are rotatably mounted on the self-cleaning frame 302, and the cleaning brush roller 303 on the left side contacts the outer wall of the pipeline 500; there are two positioning screws 304, and the two positioning screws 304 are threadedly connected to the self-cleaning frame 302, and the inner ends of the two positioning screws 304 contact the two cleaning brush rollers 303; the synchronous pulley A305 is rotatably mounted on the rear end of the connecting shaft B301, and the synchronous pulley A305 The inner wall is provided with two arc-shaped limit grooves B3051; the self-cleaning mechanism 300 further includes: a synchronous pulley B306, a synchronous belt 307 and a positioning retaining ring C308; the synchronous pulley B306 is fixedly mounted on the rear end of the connecting shaft A105; the synchronous belt 307 is mounted on the synchronous pulley A305 and the synchronous pulley B306; there are two positioning retaining rings C308, and the two positioning retaining rings C308 are fixedly mounted on the outside of the connecting shaft B301, and the inner sides of the two positioning retaining rings C308 are aligned with the synchronous pulley A30 5 contact; the self-cleaning mechanism 300 also includes: a movable positioning block 309 and a coil spring B310; there are two movable positioning blocks 309, and the two movable positioning blocks 309 are slidably installed inside the connecting shaft B301; the outer ends of the two movable positioning blocks 309 are provided with rounded corners, and the outer ends of the two movable positioning blocks 309 are inserted into the two arc-shaped limiting grooves B3051; the coil spring B310 is installed inside the connecting shaft B301, and the two ends of the coil spring B310 are also connected to the two movable positioning blocks 309;

[0051] Its specific function is: because the synchronous pulley A305 is rotatably installed at the rear end of the connecting shaft B301, and the synchronous pulley B306 is fixedly installed at the rear end of the connecting shaft A105, and the synchronous belt 307 is installed on the synchronous pulley A305 and the synchronous pulley B306, when the motor 107 drives the connecting shaft A105 to rotate clockwise, the synchronous pulley A305 can rotate with the synchronous pulley B306 under the action of the synchronous belt 307; and because the inner wall of the synchronous pulley A305 is provided with two arc-shaped limit grooves B3051, and the outer ends of the two movable positioning blocks 309 are inserted into the two arc-shaped limit grooves B3051, and the spiral The two ends of the spring B310 are also connected to the two movable positioning blocks 309. When the synchronous pulley A305 rotates, the connecting shaft B301 and the self-cleaning frame 302 can rotate simultaneously with the synchronous pulley A305 under the action of the two arc-shaped limit grooves B3051 and the two movable positioning blocks 309; when the cleaning brush roller 303 on the right side contacts the outer wall of the pipeline 500, the connecting shaft B301 and the self-cleaning frame 302 stop rotating, and when the synchronous pulley A305 continues to rotate, the synchronous pulley A305 can squeeze the two movable positioning blocks 309 to move inward, ensuring that the cleaning brush roller 303 on the right side is always in contact with the outer wall of the pipeline 500;

[0052] In addition, when the motor 107 drives the connecting shaft A105 to rotate counterclockwise, the connecting shaft B301 and the self-cleaning frame 302 can rotate simultaneously with the synchronous pulley A305 under the action of the two arc-shaped limit grooves B3051 and the two movable positioning blocks 309; when the cleaning brush roller 303 on the left side contacts the outer wall of the pipeline 500, the connecting shaft B301 and the self-cleaning frame 302 stop rotating, and when the synchronous pulley A305 continues to rotate, the synchronous pulley A305 can squeeze the two movable positioning blocks 309 to move inward. , ensuring that the cleaning brush roller 303 on the left side is always in contact with the outer wall of the pipeline 500, realizing automatic change of the cleaning direction, and being able to pre-clean the position to be detected of the pipeline 500, avoiding debris on the outer wall of the pipeline 500 from damaging the pulse detection probe 202, and facilitating detection of different angles of the pipeline 500 during resetting, thereby improving the corrosion detection accuracy of the pipeline 500; the setting of the two positioning screws 304 facilitates the staff to appropriately adjust the angles of the two cleaning brush rollers 303, so as to make full use of the two cleaning brush rollers 303.

[0053] In the present disclosure, Figure 1 and Fig.10As shown, the positioning mechanism 400 includes: a U-shaped positioning seat 401 and a movable positioning rod 402; the U-shaped positioning seat 401 is fixedly mounted on the front side of the connecting bracket 101; there are two movable positioning rods 402, and the two movable positioning rods 402 are slidably mounted on the U-shaped positioning seat 401 and the connecting bracket 101; the inner ends of the two movable positioning rods 402 are provided with rounded corners, and the inner ends of the two movable positioning rods 402 are inserted into a group of arc-shaped limit grooves A3021; ​​the positioning mechanism 400 also includes: a force-bearing plate 403 and a coil spring C404; the force-bearing plate 403 is fixedly mounted on the outside of the two movable positioning rods 402; there are two coil springs C404, and the two coil springs C404 are sleeved on the outside of the two movable positioning rods 402, and the two ends of the two coil springs C404 are also connected to the U-shaped positioning seat 401 and the force-bearing plate 403;

[0054] Its specific function is: because the inner ends of the two movable positioning rods 402 are inserted into a set of arc-shaped limit grooves A3021, and the two ends of the two coil springs C404 are also connected to the U-shaped positioning seat 401 and the force-bearing plate 403, and the elastic force of the two coil springs C404 is smaller than the elastic force of the coil spring B310, when the synchronous pulley A305 drives the connecting shaft B301 and the self-cleaning frame 302 to rotate under the action of the two movable positioning blocks 309 and the coil spring B310, the self-cleaning The cleaning frame 302 squeezes the two movable positioning rods 402 to move outward, so that the two movable positioning rods 402 are separated from the corresponding set of arc-shaped limit grooves A3021. When the connecting shaft B301 and the self-cleaning frame 302 are rotated to a suitable position, the two movable positioning rods 402 are inserted into another set of arc-shaped limit grooves A3021 under the action of two coil springs C404, which plays an elastic positioning role for the self-cleaning frame 302, so that the self-cleaning frame 302 is in a relatively stable state after rotation.

[0055] The specific usage and function of this embodiment are as follows:

[0056] When installing the present invention, the staff pulls the two U-shaped mounting frames 103 outwards, and then connects the four connecting clamping wheels 104 to the pipeline 500 to be detected. When the four connecting clamping wheels 104 are in contact with the pipeline 500, the two U-shaped mounting frames 103 can drive the two linkage protection frames 203 and the two rectangular protection covers 204 to automatically move outwards, so that the two rectangular protection covers 204 are automatically separated from the pulse detection probe 202; then the staff starts the motor 107 to rotate clockwise, and when the motor 107 is turned clockwise, the two rectangular protection covers 204 are automatically separated from the pulse detection probe 202. When the motor 107 drives the driving roller 106 to rotate clockwise, the four connecting clamping wheels 104 move to the right along the pipeline 500; when the motor 107 drives the connecting shaft A105 to rotate clockwise, the synchronous pulley A305 can rotate with the synchronous pulley B306 under the action of the synchronous belt 307; when the synchronous pulley A305 rotates, the connecting shaft B301 and the self-cleaning frame 302 can follow the synchronous pulley A305 under the action of the two arc-shaped limit grooves B3051 and the two movable positioning blocks 309. When the cleaning brush roller 303 on the right side contacts the outer wall of the pipeline 500, the connecting shaft B301 and the self-cleaning frame 302 stop rotating, and when the synchronous pulley A305 continues to rotate, the synchronous pulley A305 can squeeze the two active positioning blocks 309 to move inward, ensuring that the cleaning brush roller 303 on the right side is always in contact with the outer wall of the pipeline 500; when the synchronous pulley A305 drives the connecting shaft B301 and the self-cleaning frame under the action of the two active positioning blocks 309 and the spiral spring B310 When the self-cleaning frame 302 rotates, the two movable positioning rods 402 are squeezed to move outward, so that the two movable positioning rods 402 are separated from the corresponding set of arc-shaped limiting grooves A3021. When the connecting shaft B301 and the self-cleaning frame 302 rotate to a suitable position, the two movable positioning rods 402 are inserted into another set of arc-shaped limiting grooves A3021 under the action of the two coil springs C404, which plays an elastic positioning role for the self-cleaning frame 302, so that the self-cleaning frame 302 is in a relatively stable state after rotation;

[0057] When resetting after detection, the staff will pre-clean the debris at different angles of the pipeline 500 to ensure that the area between the two cleaning brush rollers 303 is in a clean state, and then rotate the motor 107 counterclockwise. When the motor 107 drives the driving roller 106 to rotate counterclockwise, the four connecting clamping wheels 104 move to the left along the pipeline 500. When the motor 107 drives the connecting shaft A105 to rotate counterclockwise, the connecting shaft B301 and the self-cleaning frame 302 can rotate simultaneously with the synchronous pulley A305 under the action of two arc-shaped limit grooves B3051 and two movable positioning blocks 309; when the cleaning brush roller 303 on the left side contacts the outer wall of the pipeline 500, the connecting shaft B301 When the self-cleaning frame 302 stops rotating, and the synchronous pulley A305 continues to rotate, the synchronous pulley A305 can squeeze the two movable positioning blocks 309 to move inward, ensuring that the cleaning brush roller 303 on the left side is always in contact with the outer wall of the pipeline 500, realizing the automatic change of the cleaning direction, and can pre-clean the position to be detected of the pipeline 500, so as to avoid the debris on the outer wall of the pipeline 500 from damaging the pulse detection probe 202, and facilitate the detection of different angles of the pipeline 500 during resetting, thereby improving the corrosion detection accuracy of the pipeline 500; the setting of the two positioning screws 304 is convenient for the staff to properly adjust the angles of the two cleaning brush rollers 303, so as to make full use of the two cleaning brush rollers 303;

[0058] During disassembly, the four connecting clamping wheels 104 are separated from the pipeline 500. When the four connecting clamping wheels 104 are separated from the pipeline 500, the two U-shaped mounting frames 103 can drive the two linkage protection frames 203 and the two rectangular protection covers 204 to automatically move inward, so that the inner sides of the two rectangular protection covers 204 are automatically in contact, thereby protecting the pulse detection probe 202.

[0059] In this article, there are a few points to note:

[0060] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0061] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0062] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A pulse electronic corrosion detection device for underground and surface pipelines, used for detecting pipelines (500); comprising: connecting The invention relates to a connecting mechanism (100), a corrosion detection mechanism (200), a self-cleaning mechanism (300) and a positioning mechanism (400); characterized in that the connecting mechanism (100) is installed outside the pipeline (500); the corrosion detection mechanism (200) is installed on the left side of the connecting mechanism (100); the self-cleaning mechanism (300) is installed on the connecting mechanism (100), and the self-cleaning mechanism (300) is used to pre-clean a position to be detected; the positioning mechanism (400) is installed on the front side of the connecting mechanism (100), and the positioning mechanism (400) is used to position the self-cleaning mechanism (300); The connection mechanism (100) comprises: a connection bracket (101), an octagonal guide rod (102) and a U-shaped mounting frame (103); two octagonal guide rods (102) are provided, and the two octagonal guide rods (102) are fixedly mounted on the connection bracket (101); two U-shaped mounting frames (103) are provided, and the two U-shaped mounting frames (103) are slidably mounted on the outside of the two octagonal guide rods (102); The corrosion detection mechanism (200) comprises: a mounting frame (201), a pulse detection probe (202), a linkage protection frame (203) and a rectangular protection cover (204); the mounting frame (201) is fixedly mounted on the left side of the connection bracket (101); the pulse detection probe (202) is fixedly mounted on the mounting frame (201), and the bottom of the pulse detection probe (202) contacts the outer wall of the pipeline (500); two linkage protection frames (203) are provided, and the two linkage protection frames (203) are respectively fixedly mounted on the left sides of two U-shaped mounting frames (103); two rectangular protection covers (204) are provided, and the two rectangular protection covers (204) are respectively fixedly mounted on the inner sides of the two linkage protection frames (203), and the two rectangular protection covers (204) are respectively located on the front and rear sides of the pulse detection probe (202); The connection mechanism (100) further comprises: a connection clamping wheel (104), a connection rotating shaft A (105) and a driving roller (106); a total of four connection clamping wheels (104) are provided, and every two connection clamping wheels (104) are rotatably mounted on the outside of a U-shaped mounting frame (103), and the four connection clamping wheels (104) are also in contact with the outer wall of the pipeline (500); the connection rotating shaft A (105) is rotatably mounted on the connection bracket (101); the driving roller (106) is fixedly mounted on the outside of the connection rotating shaft A (105), and the driving roller (106) is also in contact with the outer wall of the pipeline (500); The self-cleaning mechanism (300) comprises: a connecting shaft B (301) and a self-cleaning frame (302); the connecting shaft B (301) is rotatably mounted on a connecting frame (101); the self-cleaning frame (302) is fixedly mounted on the outside of the connecting shaft B (301), and both the front and rear sides of the self-cleaning frame (302) are in contact with the connecting frame (101); two groups of arc-shaped limit grooves A (3021) are formed on the front side of the self-cleaning frame (302), and the number of each group of arc-shaped limit grooves A (3021) is two; the self-cleaning mechanism (300) further comprises: a cleaning brush roller (303), a positioning screw (30 4) and a synchronous pulley A (305); two cleaning brush rollers (303) are provided, and the two cleaning brush rollers (303) are rotatably mounted on the self-cleaning frame (302), and the cleaning brush roller (303) on the left side contacts the outer wall of the pipeline (500); two positioning screws (304) are provided, and the two positioning screws (304) are threadedly connected to the self-cleaning frame (302), and the inner ends of the two positioning screws (304) contact the two cleaning brush rollers (303); the synchronous pulley A (305) is rotatably mounted on the rear end of the connecting shaft B (301), and the inner ends of the synchronous pulley A (305) are The wall is provided with two arc-shaped limit grooves B (3051); the self-cleaning mechanism (300) further comprises: a synchronous pulley B (306), a synchronous belt (307) and a positioning retaining ring C (308); the synchronous pulley B (306) is fixedly mounted at the rear end of the connecting shaft A (105); the synchronous belt (307) is mounted on the synchronous pulley A (305) and the synchronous pulley B (306); a total of two positioning retaining rings C (308) are provided, and the two positioning retaining rings C (308) are fixedly mounted on the outside of the connecting shaft B (301), and the inner sides of the two positioning retaining rings C (308) are aligned with the synchronous pulley A (30 5) contact; the self-cleaning mechanism (300) further comprises: a movable positioning block (309) and a coil spring B (310); a total of two movable positioning blocks (309) are provided, and the two movable positioning blocks (309) are slidably mounted inside the connecting shaft B (301); the outer ends of the two movable positioning blocks (309) are provided with rounded corners, and the outer ends of the two movable positioning blocks (309) are inserted into two arc-shaped limit grooves B (3051); the coil spring B (310) is mounted inside the connecting shaft B (301), and both ends of the coil spring B (310) are also connected to the two movable positioning blocks (309).

2. A pulse electronic corrosion detection device for underground and surface pipelines according to claim 1, characterized in that: The connection mechanism (100) further comprises: a motor (107) and a positioning retaining ring A (108); the motor (107) is mounted on the front side of the connection bracket (101) by means of screws, and the output shaft of the motor (107) is also fixedly connected to the front end of the connection shaft A (105); the positioning retaining ring A (108) is provided in four groups, and every two groups of positioning retaining rings A (108) are fixedly mounted on the outside of a U-shaped mounting frame (103), and the inner sides of the four groups of positioning retaining rings A (108) are in contact with the four connection clamping wheels (104).

3. The pulse electronic corrosion detection device for underground and surface pipelines according to claim 1 is characterized in that: The connection mechanism (100) further comprises: a positioning retaining ring B (109) and a coil spring A (110); a total of four positioning retaining rings B (109) are provided, and the four positioning retaining rings B (109) are fixedly mounted on the front and rear ends of the two octagonal guide rods (102); a total of four coil springs A (110) are provided, and the four coil springs A (110) are sleeved on the outside of the two octagonal guide rods (102), and the two ends of the four coil springs A (110) are also connected to the two U-shaped mounting frames (103) and the four positioning retaining rings B (109).

4. The pulse electronic corrosion detection device for underground and surface pipelines according to claim 1 is characterized in that: The positioning mechanism (400) comprises: a U-shaped positioning seat (401) and a movable positioning rod (402); the U-shaped positioning seat (401) is fixedly mounted on the front side of the connecting bracket (101); two movable positioning rods (402) are provided, and the two movable positioning rods (402) are slidably mounted on the U-shaped positioning seat (401) and the connecting bracket (101); the inner ends of the two movable positioning rods (402) are provided with rounded corners, and the inner ends of the two movable positioning rods (402) are inserted into a group of arc-shaped limiting grooves A (3021).

5. The pulse electronic corrosion detection device for underground and surface pipelines according to claim 4 is characterized in that: The positioning mechanism (400) further comprises: a force-bearing plate (403) and a coil spring C (404); the force-bearing plate (403) is fixedly mounted on the outside of the two movable positioning rods (402); a total of two coil springs C (404) are provided, and the two coil springs C (404) are sleeved on the outside of the two movable positioning rods (402), and the two ends of the two coil springs C (404) are also connected to the U-shaped positioning seat (401) and the force-bearing plate (403).

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