Detector for anti-corrosion layer of buried pipeline

Abstract

The utility model discloses a buried pipeline anticorrosive coating detector, and relates to the technical field of detection equipment. The device comprises a receiver, a magnetic boot is arranged at the bottom of the receiver, the device further comprises an outer protection plate, a fixing plate, an elastic rod and a shoveling plate, and the outer protection plate is attached to the edge of the bottom of the magnetic boot. Downward pushing force is applied to the outer protective plate through the spring, so that when the device is placed on the ground, the shoveling plate at the bottom of the outer protective plate can be tightly attached to the ground, and when the pushing device moves in the moving direction of a pipeline, stones on the ground make contact with the shoveling plate, are shoveled to the top of the shoveling plate by the shoveling plate and make contact with the outer side of the outer protective plate; the pebbles roll on the top of the shoveling plate and fall on the rear side of the device by attaching the outer protective plate, the pebbles on the front side of the magnetic boot are guided to the two sides through the outer protective plate, workers do not need to clean the pebbles on the advancing path before the device is used for detection work, and the pebbles are prevented from colliding with the bottom of the outer protective plate and foot nails at the bottom.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to an anti-corrosion layer detector for buried pipelines. Background Art

[0002] In urban pipe network infrastructure, buried metal pipes are commonly coated with an anti-corrosion coating. However, over long-term use, this coating inevitably develops defects, threatening the safe operation of the pipeline. Therefore, pipeline safety inspections are performed using an anti-corrosion coating detector. This detector typically consists of a transmitter, a receiver with a strong magnetometer (magnetic shoe), and an A-frame. Wiring connects the transmitter to the pipeline, and the receiver to the A-frame. A worker then moves the receiver and A-frame along the pipeline's path. The transmitter transmits a detection signal into the pipeline, and the receiver detects and identifies changes in the signal to determine the location of anti-corrosion coating damage.

[0003] During the detection process, the magnetic shoe and the foot spikes on the bottom of the A-frame must maintain close and stable contact with the soil layer. Since the bottom contact surface of the magnetic shoe is much larger than the bottom contact surface of the A-frame, in actual applications, if the road surface is a complex surface environment with many stones, manually clearing the stones on the travel path is time-consuming and labor-intensive. Directly pushing the instrument to move, the gravel road surface will make it difficult for the bottom of the magnetic shoe to directly contact the soil layer below, and the bottom of the magnetic shoe and the foot spikes will continuously and repeatedly collide and rub against the stones, weakening their fixation, support and current conduction functions. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a buried pipeline anti-corrosion layer detector to solve the problem that the bottom of the magnetic shoe of the detector is constantly colliding and rubbing with road stones when the detector is in use, causing the magnetic shoe to be damaged.

[0005] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions: a buried pipeline anti-corrosion layer detector, comprising a receiver, a magnetic shoe is provided at the bottom of the receiver, an outer guard plate, a fixed plate, an elastic rod and a shovel plate, the outer guard plate is fitted with the bottom edge of the magnetic shoe, the top of the outer guard plate is fixedly installed with the elastic rod, the fixed plate is fixedly installed on the surface of the magnetic shoe, the elastic rod is connected to the fixed plate, and the elastic rod can slide relative to the fixed plate, and the bottom of the outer guard plate is plugged and installed with the shovel plate;

[0006] The limiting end of the shovel plate is inserted from the inner side of the outer guard plate and is close to the bottom edge of the magnetic shoe. The limiting end of the shovel plate is used to connect the shovel plate to the outer guard plate. The number of shovel plates is multiple groups, and they are arranged at equal distances along the bottom of the outer guard plate.

[0007] The outer guard plate includes a V-shaped plate, a support plate, a slot and an anti-slip ring. The V-shaped plate fits on both sides of the bottom edge of the magnetic shoe. The support plate is fixedly installed on the top of the V-shaped plate. A slot is provided at the bottom of the V-shaped plate. An external socket is provided on the surface of the V-shaped plate, and the external socket is connected to the slot. Anti-slip rings are fixedly installed at the openings on both sides of the external socket.

[0008] The number of the slots, external plug holes and anti-slip rings is multiple, and the multiple groups of slots, external plug holes and anti-slip rings are arranged at equal distances along the bottom of the V-shaped plate.

[0009] The elastic rod includes a guide rod, a spring and a nut. The guide rod is fixedly installed on the top of the outer guard plate. The top end of the guide rod is slidably plugged into the fixed plate. The bottom end of the spring is connected to the top surface of the outer guard plate. The top end of the spring is connected to the bottom surface of the fixed plate. The spring is sleeved on the surface of the guide rod. A threaded groove is provided on the upper half of the guide rod, and the nut is threadedly installed on the upper half of the guide rod.

[0010] The shovel plate includes a guide plate, an insert plate and a latch. The insert plate is fixedly installed on the top of the guide plate, and the insert plate is slidably installed inside the slot. An inner plug hole is opened on the surface of the insert plate, and the latch is slidably installed in the outer plug hole, the inner plug hole and the inside of the slot, and fits with its inner wall.

[0011] The end of the latch with a larger cross-sectional area is located on the inner side of the outer guard plate and fits against the bottom edge surface of the magnetic shoe, and the other end thereof passes through the outer guard plate and the latch plate respectively.

[0012] The beneficial effects of the utility model are as follows:

[0013] The utility model applies a downward thrust to the outer guard plate by a spring, so that when the receiver is placed on the ground, the shovel plate at the bottom of the outer guard plate can be in close contact with the ground, so that when the receiver is pushed to move along the pipeline, the stones on the ground come into contact with the shovel plate, are scooped up by the shovel plate to the top of the shovel plate, and come into contact with the outside of the outer guard plate, so that the stones roll on the top of the shovel plate in contact with the outer guard plate and fall on the rear side of the receiver, and rely on the outer guard plate to guide the stones on the front side of the magnetic shoe to both sides, without the need for workers to clear the stones on the travel path before conducting the inspection work, so as to avoid the stones colliding with the bottom of the outer guard plate and the foot nails at the bottom, thereby avoiding weakening its fixing, supporting and current conducting functions. The stones on the top of the shovel plate can reduce their contact with the road surface, reduce friction resistance, and make the action of pushing the stones to roll down both sides more labor-saving;

[0014] By using multiple sets of detachable shovel plates, it is easy to replace a single set of shovel plates if they are bent or damaged due to long-term shoveling of stones and collisions with them. The magnetic shoes and the latches are fitted to strengthen the limit, so there is no need to worry about the shovel plates falling off the bottom of the outer guard plate during use of the device, and the operation of replacing the shovel plates is quicker and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a partial structural diagram of the utility model;

[0017] Figure 3 yes Figure 2 Schematic diagram from above;

[0018] Figure 4 It is a structural diagram of the outer guard plate, fixed plate, elastic rod and shovel plate;

[0019] Figure 5 It is a partially disassembled cross-sectional schematic diagram of the outer guard plate, elastic rod and shovel plate;

[0020] Figure 6 yes Figure 5 Enlarged schematic diagram of part A in the middle.

[0021] Figure numerals: 1. Magnetic shoe; 2. Outer guard plate; 201. V-shaped plate; 202. Support plate; 203. Slot; 204. Anti-slip ring; 3. Fixing plate; 4. Elastic rod; 401. Guide rod; 402. Spring; 403. Nut; 5. Shovel plate; 501. Guide plate; 502. Insert plate; 503. Latch. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation. The structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement solutions or common means, they will not be described in detail herein, but they still fall within the scope of protection of this application.

[0023] Figures 1-6 This is the best embodiment of the present invention, Figure 1 -Attached Figure 6 The utility model is further described.

[0024] A buried pipeline anti-corrosion layer detector includes a receiver, a magnetic shoe 1 is provided at the bottom of the receiver, an outer guard plate 2, a fixed plate 3, an elastic rod 4 and a shovel plate 5. The outer guard plate 2 is in contact with the bottom edge of the magnetic shoe 1, the elastic rod 4 is fixedly installed on the top of the outer guard plate 2, the fixed plate 3 is fixed to the surface of the magnetic shoe 1 by bolts, the elastic rod 4 is connected to the fixed plate 3, and the elastic rod 4 can slide relative to the fixed plate 3. The shovel plate 5 is plugged into and installed at the bottom of the outer guard plate 2;

[0025] The limiting end of the shovel plate 5 is inserted from the inner side of the outer guard plate 2 and is close to the bottom edge of the magnetic shoe 1. The limiting end of the shovel plate 5 is used to connect the shovel plate 5 with the outer guard plate 2. The number of shovel plates 5 is multiple groups, and they are arranged at equal distances along the bottom of the outer guard plate 2.

[0026] Specifically, the signal receiver displays the changes in the signal in real time, and the staff determines whether there are any damage defects in the pipeline anti-corrosion layer based on the specific changes in the signal. The outer guard plate 2 is used to protect both sides of the magnetic shoe 1 and separate the road stones from it. The fixing plate 3 is used to facilitate the quick disassembly and assembly of the outer guard plate 2. The outer guard plate 2 is installed to the magnetic shoe 1 on a road full of stones. The outer guard plate 2 can be removed on a safe road without stones. The elastic rod 4 applies force to the outer guard plate 2, so that the shovel plate 5 at the bottom of the outer guard plate 2 fits with the ground, and the shovel plate 5 is used to shovel the stones on the moving path, and the stones are guided to roll over the surface of the shovel plate 5 to the back side of the device.

[0027] The outer guard plate 2 includes a V-shaped plate 201, a support plate 202, a slot 203 and an anti-slip ring 204. The V-shaped plate 201 fits on both sides of the bottom of the magnetic shoe 1. The support plate 202 is fixedly installed on the top of the V-shaped plate 201. A slot 203 is provided at the bottom of the V-shaped plate 201, and the slot 203 is corresponding to the plug plate 502. An external plug hole is provided on the surface of the V-shaped plate 201, and the external plug hole is corresponding to the pin 503, and the external plug hole and the slot 203 are connected. Anti-slip rings 204 are fixedly installed at the openings on both sides of the external plug hole, and the anti-slip rings 204 are corresponding to the plug pin 503; the anti-slip rings 204 are made of anti-slip material with greater friction.

[0028] Specifically, the V-shaped plate 201 is fitted to both sides of the magnetic shoe 1 to protect the magnetic shoe 1, and the pin 503 thereon can be tightly attached to the surface of the magnetic shoe 1. The shovel plate 5 is quickly installed to the bottom of the V-shaped plate 201 through the slot 203, and the friction resistance between the anti-slip ring 204 and the pin 503 prevents the pin 503 from falling off from the external socket by itself.

[0029] There are multiple groups of slots 203, external plug holes and anti-slip rings 204, which are evenly spaced along the bottom of the V-shaped plate 201.

[0030] Specifically, multiple groups of scraping plates 5 are installed in order on the bottom of the V-shaped plate 201 through multiple groups of slots 203, external plug holes and anti-slip rings 204, so as to facilitate the installation and replacement of damaged scraping plates 5.

[0031] The elastic rod 4 includes a guide rod 401, a spring 402 and a nut 403. The guide rod 401 is fixedly installed on the top of the support plate 202. The top of the guide rod 401 is slidably plugged into the fixed plate 3. The bottom end of the spring 402 is connected to the top surface of the support plate 202. The top of the spring 402 is connected to the bottom surface of the fixed plate 3. The spring 402 is sleeved on the surface of the guide rod 401. A threaded groove is provided on the upper half of the guide rod 401. The nut 403 is threadedly installed on the upper half of the guide rod 401, and the nut 403 is located above the fixed plate 3.

[0032] Specifically, the guide rod 401 is used to guide the outer guard plate 2 to move up and down stably under the fixed plate 3, and the spring 402 applies force to the V-shaped plate 201 to push the V-shaped plate 201 so that the shovel plate 5 at the bottom is in contact with the ground. The nut 403 is used to limit the downward movement range of the outer guard plate 2 to prevent the guide rod 401 from detaching from the inside of the fixed plate 3.

[0033] The scraping plate 5 includes a guide plate 501, an inserting plate 502 and a latch 503. The inserting plate 502 is fixedly installed on the top of the guide plate 501. The inserting plate 502 is slidably installed inside the slot 203. An inner plug hole is opened on the surface of the inserting plate 502. The latch 503 is slidably installed inside the inner plug hole and fits with the inner wall of the inner plug hole. The latch 503 passes through the outer plug hole of the V-shaped plate 201 and the slot 203 and fits with the inner wall of the anti-slip ring 204. The latch 503 is the limit end of the scraping plate 5;

[0034] Specifically, the stones are scooped up by the guide plate 501, and the larger stones are guided to roll above them to both sides of the device. The smaller stones collide and fly away, and are inserted into the interior of the slot 203 through the insert plate 502, and the pin 503 passes through the outer hole of the V-shaped plate 201 and the inner hole of the insert plate 502, so that the shoveling plate 5 is quickly fixed to the bottom of the outer guard plate 2.

[0035] The end of the latch 503 with a larger cross-sectional area is located on the inner side of the outer shield 2 and fits against the surface of the magnetic shoe 1, and the other end thereof passes through the outer shield 2 and the latch 502 respectively;

[0036] Specifically, the pin 503 is inserted and fixed from the inner side of the outer guard plate 2 so that the magnetic shoe 1 fits its surface, thereby preventing the pin 503 from falling off due to vibration and other factors during the moving process of the device, causing the shovel plate 5 to separate from the outer guard plate 2.

[0037] In summary: When the present invention is in use, when the staff uses the detector to detect damage to the anti-corrosion layer of the pipeline, the transmitter is connected to the pipeline using a line, and the receiver is connected to the A-frame using a line (the transmitter, receiver and A-frame are existing equipment, and the specific structure is not described here). If the road surface is a stone-rich surface environment, the outer guard plate 2, the fixed plate 3, the elastic rod 4 and the shovel plate 5 are installed on the magnetic shoe 1. The staff pushes the receiver and the A-frame to move along the pipeline on the ground, and relies on the spring 402 to apply a downward thrust to the support plate 202. , so that the guide plate 501 at the bottom of the V-shaped plate 201 is close to the ground. During the movement of the device, the stones on the ground come into contact with the guide plate 501 and are scooped up to the top of the guide plate 501. The stones come into contact with the outer side of the V-shaped plate 201. The movement of the device causes the stones to roll on the top of the guide plate 501 and the outer side of the V-shaped plate 201 and fall on the rear side of the device, completing the operation of guiding the stones on the front side of the magnetic shoe 1 to both sides. No additional cleaning work is required by the staff, and the collision of stones with the bottom of the magnetic shoe 1 is avoided, ensuring the stable progress of the detection work.

[0038] After long-term use of the device, the surface of some guide plates 501 is damaged due to continuous shoveling of ground stones. The nut 403 can be turned to expand the downward movement range of the outer guard plate 2 until the outer guard plate 2 is pulled to stretch the spring 402, and the inner side of the V-shaped plate 201 can be separated from the two sides of the magnetic shoe 1. At this time, the end of the pin 503 located on the inner side of the V-shaped plate 201 is no longer in contact with the magnetic shoe 1. The staff only needs to press the other end of the pin 503 to overcome the friction resistance between the anti-slip ring 204 and the pin 503, and then the pin 503 can be removed from the outer socket of the V-shaped plate 201, thereby quickly disassembling and replacing the shoveling plate 5.

Claims

1. A buried pipeline anti-corrosion layer detector, comprising a receiver, a magnetic shoe (1) is provided at the bottom of the receiver, characterized in that: It also includes an outer guard plate (2), a fixed plate (3), an elastic rod (4) and a shoveling plate (5), wherein the outer guard plate (2) is fitted with the bottom edge of the magnetic shoe (1), the top of the outer guard plate (2) is fixedly mounted with the elastic rod (4), the fixed plate (3) is fixedly mounted on the surface of the magnetic shoe (1), the elastic rod (4) is connected to the fixed plate (3), and the elastic rod (4) can slide relative to the fixed plate (3), and the bottom of the outer guard plate (2) is plugged and mounted with the shoveling plate (5); The limiting end of the shovel plate (5) is inserted from the inner side of the outer guard plate (2) and is close to the bottom edge of the magnetic shoe (1). The limiting end of the shovel plate (5) is used to connect the shovel plate (5) to the outer guard plate (2). The number of the shovel plates (5) is multiple groups, and they are arranged at equal distances along the bottom of the outer guard plate (2).

2. The buried pipeline anti-corrosion layer detector according to claim 1, characterized in that: The outer guard plate (2) comprises a V-shaped plate (201), a support plate (202), a slot (203) and an anti-slip ring (204); the V-shaped plate (201) is fitted on both sides of the bottom edge of the magnetic shoe (1); the support plate (202) is fixedly mounted on the top of the V-shaped plate (201); the slot (203) is provided at the bottom of the V-shaped plate (201); an external plug hole is provided on the surface of the V-shaped plate (201), and the external plug hole is connected to the slot (203); and the anti-slip rings (204) are fixedly mounted at the openings on both sides of the external plug hole.

3. The buried pipeline anti-corrosion layer detector according to claim 2, characterized in that: The number of the slots (203), external plug holes and anti-slip rings (204) is multiple groups, and the multiple groups of slots (203), external plug holes and anti-slip rings (204) are arranged at equal distances along the bottom of the V-shaped plate (201).

4. The buried pipeline anti-corrosion layer detector according to claim 1, characterized in that: The elastic rod (4) comprises a guide rod (401), a spring (402) and a nut (403), wherein the guide rod (401) is fixedly mounted on the top of the outer guard plate (2), the top end of the guide rod (401) is slidably plugged into the fixed plate (3), the bottom end of the spring (402) is connected to the top surface of the outer guard plate (2), the top end of the spring (402) is connected to the bottom surface of the fixed plate (3), and the spring (402) is sleeved onto the surface of the guide rod (401), a threaded groove is provided on the upper half surface of the guide rod (401), and the nut (403) is threadedly mounted on the upper half of the guide rod (401).

5. A buried pipeline anti-corrosion layer detector according to claim 2 or 3, characterized in that: The shovel plate (5) comprises a guide plate (501), an inserting plate (502) and a latch (503). The inserting plate (502) is fixedly mounted on the top of the guide plate (501). The inserting plate (502) is slidably mounted inside the slot (203). An inner plug hole is provided on the surface of the inserting plate (502). The latch (503) is slidably mounted inside the outer plug hole, the inner plug hole and the slot (203) and fits in with the inner wall thereof.

6. The buried pipeline anti-corrosion layer detector according to claim 5, characterized in that: The end of the latch (503) with a larger cross-sectional area is located on the inner side of the outer protective plate (2) and fits against the bottom edge surface of the magnetic shoe (1), and the other end thereof penetrates the outer protective plate (2) and the latch plate (502) respectively.

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