Device for detecting corrosion-resistant layers on inner and outer surfaces of corrosion-resistant pipeline

Abstract

The utility model belongs to the technical field of detection devices, and particularly relates to a device for detecting anticorrosive layers on the inner and outer surfaces of an anticorrosive pipeline, which comprises a base and a transmitter mounted on the base, a portal frame is fixedly mounted on the base, a sliding block is fixedly mounted on the portal frame, and a threaded rod is mounted on the sliding block in a threaded manner. A second clamping plate is slidably mounted on the portal frame, a bearing is fixedly mounted above the second clamping plate, and an inner ring of the bearing is fixedly connected with the threaded rod; by installing the threaded rod, the first clamping plate and the second clamping plate, the connection stability of the detection device for the inner and outer double-sided anticorrosive layers of the anticorrosive pipeline is improved, the threaded rod is driven to move downwards by rotating the handle, the threaded rod moves downwards to push the second clamping plate to move downwards, and a connecting line is clamped and fixed in the grooves in the first clamping plate and the second clamping plate; operation is simple, time and labor are saved, the connection stability of the detection device for the inner and outer double-sided anticorrosive layers of the anticorrosive pipeline can be improved, and the detection speed is further increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to detection device technical field, concretely is a kind of anticorrosive pipeline inner and outer double anticorrosive layer detection device. BACKGROUND

[0002] Water resources allocation concerns national economy and people's livelihood, and large-diameter water conveying pipelines are often used for water resources scheduling and allocation. The deep-buried large-diameter water conveying pipelines will corrode and leak under the influence of internal and external environment, which will seriously reduce the service performance and service life of the project, affect the operation effect of the project, and the anticorrosive pipeline inner and outer double anticorrosive layer detection device is a device for detecting the anticorrosive layer of large-diameter steel pipeline. After detection is completed, the state of the anticorrosive layer of large-diameter steel pipeline is judged by checking the dB value on the receiver.

[0003] The patent document CN218378343U discloses a kind of buried pipeline outer anticorrosive layer damage detection device, including receiver, transmitter, trolley, the trolley is connected with elastic buffer and elastic buffer is connected with bearing seat, bearing seat is equipped with clamping groove, and transmitter is detachably connected in clamping groove, bearing seat is connected with telescopic telescopic plate, telescopic plate is detachably connected with assembly block, and assembly block is equipped with through hole, drive element is installed on assembly block, and receiver is connected with drive element and is driven by drive element to enter and exit through hole, the end of assembly block away from telescopic plate is installed with the protection piece for the protection of receiver, the device solves the problem that receiver is easy to collide with foreign matter on road surface when detecting pipeline, but the pipeline outer anticorrosive layer damage detection device of the above-mentioned disclosure mainly considers using protection piece to resist foreign matter on road surface to realize the protection of detection device. Based on the need to pull back and forth to move A-shaped frame during detection, it is easy to cause the loosening of the connection between A-shaped frame and transmitter, and the problem of connection stability of pipeline anticorrosive layer detection device is not considered. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of anticorrosive pipeline inner and outer double anticorrosive layer detection device to solve the technical problem that pipeline anticorrosive layer detection device is easy to be unstable in connection when moving in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of anticorrosive pipeline inner and outer double anticorrosive layer detection device, including base and transmitter installed on base, the base is fixedly installed with gantry frame;

[0006] The gantry is fixedly installed with a sliding block, the sliding block is threadedly installed with a threaded rod, and the threaded rod penetrates through the gantry, the gantry is slidably installed with a second clamping plate, the second clamping plate is symmetrically installed with clamping blocks at two ends, the gantry is provided with clamping grooves corresponding to the clamping blocks, and the clamping blocks are limited in the clamping grooves, and the second clamping plate is fixedly installed with a bearing above, and the inner ring of the bearing is fixedly connected with the threaded rod.

[0007] Preferably, the base is fixedly installed with a support plate, a plurality of groups of concave locking blocks are correspondingly installed on the support plate, the concave locking blocks are provided with receiving grooves, springs and telescopic rods are correspondingly installed in the receiving grooves, the telescopic rods penetrate through the springs, the other ends of the springs and the telescopic rods are fixedly connected with pressing plates, and rubber plates are correspondingly installed on the pressing plates.

[0008] Preferably, the concave locking blocks are slidably installed with A-shaped frames, and the outer walls of the A-shaped frames are in contact with the rubber plates.

[0009] Preferably, the gantry is fixedly installed with a first clamping plate at the bottom, and the first clamping plate and the second clamping plate are vertically corresponding.

[0010] Preferably, rubber pads are fixedly installed in the grooves on the second clamping plate and the first clamping plate.

[0011] Preferably, a handle is installed at the top of the threaded rod, and the handle and the threaded rod are detachably installed.

[0012] Preferably, the base is symmetrically installed with four groups of universal wheels at the bottom.

[0013] Preferably, the base is installed with a battery block, and the battery block is connected with a transmitter through wires.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] 1. The threaded rod, the first clamping plate and the second clamping plate are installed, so that the stability of the anticorrosion pipeline inner and outer double anti-corrosion layer detection device connection is improved, the handle is rotated to drive the threaded rod to move downward, the threaded rod moves downward to push the second clamping plate to move downward, the connecting wire is clamped and fixed in the grooves on the first clamping plate and the second clamping plate, the operation is simple, time and labor are saved, the stability of the anticorrosion pipeline inner and outer double anti-corrosion layer detection device connection is improved, and the detection rate is further accelerated.

[0016] 2. The utility model discloses a telescopic rod, spring and pressing plate are installed, and the utility model discloses a convenient fixed A type frame in anticorrosion pipeline inside and outside double -sided anticorrosion layer detection device, improve the practicality of anticorrosion pipeline inside and outside double -sided anticorrosion layer detection device, after the detection is completed, the A type frame is inserted to the concave lock block, and the rubber plate on the pressing plate is contacted with the A type frame by the spring elasticity, and the A type frame generates certain clamping force, not only simple and convenient to fix the dismantlement, but also can liberate the hands of construction personnel, improve the practicality of anticorrosion pipeline inside and outside double -sided anticorrosion layer detection device. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole structure schematic diagram of the utility model;

[0018] Figure 2 It is the gantry structure schematic diagram of the utility model;

[0019] Figure 3 It is the Figure 2 A place amplification structure schematic diagram of the utility model;

[0020] Figure 4 It is the concave lock block structure schematic diagram of the utility model;

[0021] Figure 5 It is the storage groove internal structure schematic diagram of the utility model.

[0022] In the drawing: 1, base; 2, transmitter; 3, battery block; 4, A type frame; 5, universal wheel; 6, gantry; 7, sliding block; 8, threaded rod; 9, first clamping plate; 10, second clamping plate; 11, rubber pad; 12, support plate; 13, concave lock block; 14, clamping groove; 15, clamping block; 16, handle; 17, bearing; 18, storage groove; 19, spring; 20, pressing plate; 21, rubber plate; 22, telescopic rod. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0024] Please refer to Figure 1 , Figure 2 and Figure 3, a device for detecting the inner and outer double-sided anti-corrosion layer of an anti-corrosion pipeline, comprising a base 1 and a transmitter 2 mounted on the base 1, a gantry 6 is fixedly mounted on the base 1, a slider 7 is fixedly mounted on the gantry 6, a threaded rod 8 is threadedly mounted on the slider 7, and the threaded rod 8 passes through the gantry 6, a second splint 10 is slidably mounted on the gantry 6, and blocks 15 are symmetrically mounted at both ends of the second splint 10, a slot 14 corresponding to the block 15 is provided on the gantry 6, and the block 15 is limited in the slot 14, a bearing 17 is fixedly mounted above the second splint 10, and the inner ring of the bearing 17 is fixedly connected to the threaded rod 8, a first splint 9 is fixedly mounted on the bottom of the gantry 6, and the first splint 9 and the second splint 10 are vertically corresponding;

[0025] When installing the connecting line, pass the connecting line through the middle of the first clamping plate 9 and the second clamping plate 10. Based on the slider 7, it is fixedly installed on the gantry 6. Turn the handle 16 clockwise to drive the threaded rod 8 to rotate. At the same time, the threaded rod 8 moves downward, pushing the second clamping plate 10 to move downward along the slot 14. After the rubber pad 11 is fully in contact with the connecting line, stop turning the handle 16. At this time, the first clamping plate 9 and the second clamping plate 10 generate a moving clamping force on the connecting line, so that the connecting line is not easy to disconnect. After the inspection is completed, turn the handle 16 counterclockwise to drive the threaded screw to move upward, pull the second clamping plate 10 to move upward along the slot 14, and the distance between the first clamping plate 9 and the second clamping plate 10 increases before it can be disconnected. Remove the connecting wire. The rubber pad 11 protects the connecting wire and prevents the first clamping plate 9 and the second clamping plate 10 from being damaged when clamping and fixing the connecting wire. The clamping block 15 is limited in the clamping groove 14 to provide a guide and limit for the vertical up and down movement of the second clamping plate 10. The inner ring of the bearing 17 is fixedly connected to the threaded rod 8 to prevent the second clamping plate 10 from hindering the rotation of the threaded rod 8. By using the threaded rod 8 to rotate and move downward to push the second clamping plate 10 downward, the connecting wire is clamped and fixed in the grooves on the first clamping plate 9 and the second clamping plate 10, which can prevent the A-type frame 4 from being moved to pull the connecting wire and causing the connecting wire to become loose, thereby further improving the stability of the connection of the double-sided anti-corrosion layer detection device on the inside and outside of the pipeline.

[0026] See also Figure 1 、 Figure 4 and Figure 5 A support plate 12 is fixedly mounted on the base 1, and a plurality of concave locking blocks 13 are correspondingly mounted on the support plate 12. A receiving groove 18 is provided on the concave locking block 13, and a spring 19 and a telescopic rod 22 are correspondingly mounted in the receiving groove 18, and the telescopic rod 22 passes through the spring 19. The other ends of the spring 19 and the telescopic rod 22 are fixedly connected with a pressing plate 20, and a rubber plate 21 is correspondingly mounted on the pressing plate 20. An A-shaped frame 4 is slidably mounted on the concave locking block 13, and the outer wall of the A-shaped frame 4 is in contact with the rubber plate 21;

[0027] After the detection is completed, the A-shaped frame 4 is aligned with the concave locking block 13 and is inserted with force, the spring 19 is elastically rebounded to push the pressing plate 20 to move oppositely, the rubber plate 21 is in full contact with the outer wall of the A-shaped frame 4, the pressing plate 20 generates a clamping force to move the A-shaped frame 4, the A-shaped frame 4 is fixed in the concave locking block 13, the telescopic rod 22 provides a guiding and limiting effect for the movement of the pressing plate 20, based on the high anti-skid property of the rubber plate 21, the contact between the rubber plate 21 and the A-shaped frame 4 can increase the friction force, preventing the A-shaped frame 4 from vertically sliding in the concave locking block 13, by converting the elastic force of the spring 19 into the clamping force of the pressing plate 20 on the A-shaped frame 4, the A-shaped frame 4 is fixed in the concave locking block 13, which is not only convenient and fast, but also can free both hands when transferring the double-sided corrosion layer detection device for the inner and outer of the anti-corrosion pipeline after the detection is completed.

[0028] Please refer to Figure 1 The base 1 is provided with a battery block 3, and the battery block 3 is connected with the transmitter 2 through wires, during the detection, the receiver, the A-shaped frame 4 and the transmitter 2 are connected, then the A-shaped frame 4 is inserted on the ground above the target pipeline, the transmitter 2 is driven to release the multi-frequency current through the A-shaped frame 4 and applied to the target pipeline, the current propagates along the circuit composed of the pipeline and the ground, when the corrosion layer is intact, the current in the pipeline uniformly attenuates with the increase of the propagation intensity, when the corrosion layer is damaged or aged or overlapped with other metal objects, the alternating potential gradient appears obvious abnormality, the current leaks to the soil or the metal object through the fault point, at this time, the current field is formed in the leakage area, the electric field intensity is higher near the leakage point, and the dB value displayed by the receiver also increases, the state of the corrosion layer of the pipeline is judged by checking the dB value.

[0029] Please refer to Figure 1 The top of the threaded rod 8 is provided with a handle 16, and the handle 16 and the threaded rod 8 are detachably installed, the bottom of the base 1 is symmetrically provided with four groups of universal wheels 5, the universal wheels 5 facilitate the transfer of the double-sided corrosion layer detection device for the inner and outer of the anti-corrosion pipeline, and the handle 16 can be detached and placed in an idle position when not in use.

[0030] The working principle is that before detection, the connecting wire is passed through the middle of the first clamping plate 9 and the second clamping plate 10, the slider 7 is fixedly installed on the gantry 6, the clockwise rotation of the handle 16 drives the threaded rod 8 to rotate and move downward at the same time, the second clamping plate 10 is pushed to move downward along the direction of the clamping groove 14, the rubber pad 11 is in full contact with the connecting wire, and then the handle 16 is stopped from rotating, at this time, the first clamping plate 9 and the second clamping plate 10 generate a moving clamping force on the connecting wire, so that the connecting wire is not easy to disconnect, then the A-shaped frame 4 is inserted on the ground above the target pipeline, the transmitter 2 is driven to release the multi-frequency current on the target pipeline through the A-shaped frame 4, the current propagates along the circuit formed by the pipeline and the ground, when the anticorrosive layer is intact, the current in the pipeline uniformly attenuates with the increase of the propagation intensity, when the anticorrosive layer is damaged or overlapped with other metal objects, the alternating current potential gradient appears obvious abnormality, the current leaks to the soil or the metal object through the fault point, at this time, the current field is formed in the leakage area, the electric field intensity is higher near the leakage point, and the dB value displayed by the receiver also increases, the state of the anticorrosive layer of the pipeline is judged by checking the dB value, after detection is completed, the handle 16 is counterclockwise rotated to drive the threaded rod to move upward, the second clamping plate 10 is pulled to move upward along the direction of the clamping groove 14, and the distance between the first clamping plate 9 and the second clamping plate 10 is increased, so that the connecting wire can be removed;

[0031] Finally, after detection is completed, the A-shaped frame 4 is aligned with the concave lock block 13 and is inserted, the spring 19 is elastically rebounded to push the pressing plate 20 to move oppositely, the rubber plate 21 is in full contact with the outer wall of the A-shaped frame 4, and the pressing plate 20 generates a moving clamping force on the A-shaped frame 4, so that the A-shaped frame 4 is fixed in the concave lock block 13.

[0032] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims instead of the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the involved claims.

Claims

1. A device for detecting the internal and external anticorrosive coating of a pipeline, comprising a base (1) and a transmitter (2) mounted on the base (1), characterized in that: The base (1) is fixedly installed with a portal frame (6); The portal frame (6) is fixedly installed with a sliding block (7), the sliding block (7) is threadedly installed with a threaded rod (8), the threaded rod (8) penetrates through the portal frame (6), the portal frame (6) is slidingly installed with a second clamping plate (10), the second clamping plate (10) is symmetrically installed with a clamping block (15) at both ends, the portal frame (6) is provided with a clamping groove (14) corresponding to the clamping block (15), and the clamping block (15) is limited in the clamping groove (14), and the second clamping plate (10) is fixedly installed with a bearing (17) above, and the inner ring of the bearing (17) is fixedly connected with the threaded rod (8).

2. The device for detecting the internal and external anticorrosive coating of an anticorrosive pipeline according to claim 1, characterized in that: The base (1) is fixedly installed with a support plate (12), a plurality of groups of concave locking blocks (13) are correspondingly installed on the support plate (12), the concave locking blocks (13) are provided with receiving grooves (18), springs (19) and telescopic rods (22) are correspondingly installed in the receiving grooves (18), the telescopic rods (22) penetrate through the springs (19), the other ends of the springs (19) and the telescopic rods (22) are fixedly connected with pressing plates (20), and the pressing plates (20) are correspondingly installed with rubber plates (21).

3. The device for detecting the internal and external anticorrosive coating of an anticorrosive pipeline according to claim 2, characterized in that: The concave locking blocks (13) are slidingly installed with A-shaped frames (4), and the outer walls of the A-shaped frames (4) are in contact with the rubber plates (21).

4. The device for detecting the internal and external anticorrosive coating of an anticorrosive pipeline according to claim 1, characterized in that: The portal frame (6) is fixedly installed with a first clamping plate (9) at the bottom, and the first clamping plate (9) and the second clamping plate (10) are vertically corresponding.

5. The device for detecting the internal and external anticorrosive coating of an anticorrosive pipeline according to claim 1, characterized in that: The recesses on the second clamping plate (10) and the first clamping plate (9) are fixedly installed with rubber pads (11).

6. The device for detecting the internal and external anticorrosive coating of an anticorrosive pipeline according to claim 1, characterized in that: The top of the threaded rod (8) is installed with a handle (16), and the handle (16) and the threaded rod (8) are detachably installed.

7. The device for detecting the internal and external anticorrosive coating of an anticorrosive pipeline according to claim 1, characterized in that: The bottom of the base (1) is symmetrically installed with four groups of universal wheels (5).

8. The device for detecting the internal and external anticorrosive coating of an anticorrosive pipeline according to claim 1, characterized in that: The base (1) is installed with a battery block (3), and the battery block (3) is connected with the transmitter (2) through wires. The base (1) is installed with a battery block (3), and the battery block (3) is connected with the transmitter (2) through wires.

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