Drainage pipeline flaw detection device

Abstract

The utility model discloses a drainage pipeline flaw detection device which comprises a base and a side plate fixed on one side of the base, a first motor is fixed on the side surface of the side plate, a sliding seat capable of transversely moving under the driving of the first motor is arranged below the side plate, a lifting air cylinder is fixed on the sliding seat, and the lifting air cylinder is fixed on the side plate. An ultrasonic flaw detector is fixed to the output end of the lifting air cylinder, and a clamping mechanism used for fixing a pipeline and adjusting a pipeline welding seam to the position under the ultrasonic flaw detector is arranged on the base. In the process that the idler wheel rolls on the surface of the pipeline, the outer through holes in the idler wheel are vertically aligned with the inner through holes in the wheel shaft one by one, so that a coupling agent can be smeared on the surface of the pipeline, then the coupling agent is evenly brushed through the brush, and then ultrasonic flaw detection is carried out in the length direction of a pipeline welding seam through an ultrasonic flaw detector; compared with the prior art, the coupling agent smearing device can replace manual work to conduct coupling agent smearing work on pipeline welding seams, and smearing uniformity is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the technical field of pipeline flaw detection, specifically relating to a flaw detection device for drainage pipelines. Background Technology

[0002] During the manufacturing process of drainage pipes, it is necessary to inspect the welds to ensure the pipes' sealing performance. Currently, the common method for inspecting drainage pipes is to manually use a handheld ultrasonic flaw detector to examine the pipe surface. While this method is relatively accurate, it is time-consuming and labor-intensive, requiring workers to inspect the pipe axially step by step, making it cumbersome and inefficient.

[0003] A search revealed that CN218412386U discloses a water supply and drainage pipeline inspection device, which includes an inspection platform. A water supply and drainage pipeline is placed on the top surface of the inspection platform. A clamping assembly for limiting the movement of the water supply and drainage pipeline is provided on the surface of the inspection platform. An ultrasonic flaw detector is installed on the top surface of the inspection platform. A column is fixedly connected to the top surface of the inspection platform, and a control box is fixedly connected to the top of the column. A transverse drive assembly is provided on the surface of the control box, and an ultrasonic probe is installed at the bottom of the transverse drive assembly. The clamping assembly includes a first motor, which is fixedly installed on the front of the inspection platform. In use, this device facilitates rapid inspection of the surface of water supply and drainage pipelines in rail transit systems. Compared to manual handheld equipment, this inspection device is more convenient, efficient, time-saving, and labor-saving, thereby ensuring the product quality of water supply and drainage pipelines and guaranteeing the normal operation of water supply and drainage projects in rail transit systems.

[0004] However, the above-mentioned detection device technology has the following problems: before the detection device is tested by the ultrasonic probe, the coupling agent needs to be applied manually. Due to the differences in human operation, it is difficult to ensure the uniformity of the application, which in turn affects the detection effect of the ultrasonic probe. Utility Model Content

[0005] The purpose of this invention is to provide a drainage pipe flaw detection device to solve the problem mentioned in the background art that it is difficult to ensure the uniformity of the coating when manually applying coupling agent.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a drainage pipe flaw detection device, comprising a base and a side plate fixed to one side of the base, a first motor fixed to the side of the side plate, a slide block capable of lateral movement under the drive of the first motor provided below the side plate, a lifting cylinder fixed on the slide block, an ultrasonic flaw detector fixed to the output end of the lifting cylinder, and a clamping mechanism provided on the base for fixing the pipe and adjusting the pipe weld to be directly below the ultrasonic flaw detector;

[0007] The ultrasonic flaw detector has a coating mechanism on one side, which includes a movable frame. A reservoir containing coupling agent is slidably connected to the top of the movable frame. The reservoir is fixed to the side of the ultrasonic flaw detector and is elastically connected to the movable frame via a spring. A coating wheel assembly that can roll on a pipe is provided on the inner bottom of the movable frame. A conduit is provided on one side of the movable frame to guide the coupling agent in the reservoir to the coating wheel assembly when the coating wheel assembly rolls. An extrusion component is provided on the inner top of the reservoir to evenly squeeze the coupling agent through the coating wheel assembly onto the conduit at the pipe weld under extrusion. A brush for applying the extruded coupling agent to the pipe weld is fixed on one side of the movable frame.

[0008] Preferably, the clamping mechanism includes a mounting platform, a second motor is fixed on one side of the mounting platform, and a mechanical claw is provided on the other side of the mounting platform that can drive the pipe to rotate under the drive of the second motor.

[0009] Preferably, the clamping mechanism further includes two support frames, the tops of which are rotatably connected to guide wheels for supporting the pipe.

[0010] Preferably, the movable frame includes a fixed plate, both ends of which are fixed with side frames, and the opposite sides of the two side frames are provided with sliding grooves. The bottom sides of the liquid storage tank are fixed with sliders that are slidably connected to the sliding grooves on the two side frames.

[0011] Preferably, a circular tube is fixed to the top of the fixing plate, a stopper is fixed to the top of the circular tube, the bottom cavity of the liquid storage tank is a cone shape that is wider at the top and narrower at the bottom, and a sealing ring that fits tightly against the outer wall of the circular tube is fixed inside the bottom opening. The stopper can fit against the cone-shaped bottom cavity of the liquid storage tank under the elastic force of the spring, and a guide hole communicating with the inner cavity of the liquid storage tank is opened at the top of the circular tube.

[0012] Preferably, the spring is sleeved outside the circular tube, with the upper end of the spring abutting against the bottom surface of the liquid storage tank and the lower end of the spring abutting against the top surface of the fixing plate.

[0013] Preferably, the coating wheel assembly includes a roller and a wheel axle rotatably connected inside the roller. The two ends of the wheel axle are fixed to a side frame. The roller has a plurality of radially distributed external through holes, and the wheel axle has an internal through hole corresponding to the external through holes.

[0014] Preferably, one end of the conduit is connected to a round tube, and the other end of the conduit is connected to a wheel axle.

[0015] Preferably, the extrusion component includes a piston, which is slidably disposed inside the liquid storage tank, a counterweight is fixed to the top of the piston, and a pull rod is fixed to the top of the counterweight.

[0016] Compared with the prior art, this utility model provides a drainage pipeline flaw detection device, which has the following features:

[0017] Beneficial effects:

[0018] 1. When this utility model is in operation, one end of the pipe is placed between the guide wheels of two support frames, and the other end of the pipe is clamped and fixed by a mechanical claw. Then, the second motor rotates the pipe so that the weld is facing upwards and directly facing the ultrasonic flaw detector. Compared with the prior art, this utility model can easily fix the pipe and quickly adjust the position of the weld.

[0019] 2. In this invention, as the roller rolls on the pipe surface, the outer through holes on the roller are vertically aligned with the inner through holes on the axle, allowing the coupling agent to be squeezed out through the outer through holes and applied to the pipe surface. Then, it is evenly coated with a brush, and subsequently, ultrasonic flaw detection is performed along the length of the pipe weld using an ultrasonic flaw detector. Compared with the prior art, this invention can replace manual application of coupling agent to pipe welds and ensures uniform application. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of a drainage pipeline flaw detection device proposed in this utility model;

[0022] Figure 2 This is a schematic diagram of the overall structure of the coating mechanism proposed in this utility model;

[0023] Figure 3 This is a front view schematic diagram of the coating mechanism proposed in this utility model;

[0024] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure at point AA;

[0025] Figure 5 This is a side view of the coating mechanism proposed in this utility model;

[0026] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure at point BB;

[0027] In the diagram: 1. Base; 2. Side plate; 3. Slide; 4. First motor; 5. Lifting cylinder; 6. Ultrasonic flaw detector; 7. Coating mechanism; 71. Movable frame; 711. Fixed plate; 712. Side frame; 7121. Slide groove; 713. Round tube; 7131. Guide hole; 714. Plug plate; 72. Liquid storage tank; 721. Slider; 722. Sealing ring; 73. Spring; 74. Coating wheel assembly; 741. Roller; 7411. External through hole; 742. Wheel axle; 7421. Internal through hole; 75. Guide tube; 76. Extrusion component; 761. Piston; 762. Counterweight; 763. Tie rod; 77. Brush; 8. Mounting platform; 9. Mechanical claw; 10. Second motor; 11. Support frame; 12. Guide wheel. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1 This utility model provides a technical solution: a drainage pipe flaw detection device, including a base 1 and a side plate 2 fixed to one side of the base 1. A first motor 4 is fixed to the side of the side plate 2. A slide 3, which can move laterally under the drive of the first motor 4, is provided below the side plate 2. A lifting cylinder 5 is fixed on the slide 3. An ultrasonic flaw detector 6 is fixed to the output end of the lifting cylinder 5. A clamping mechanism for fixing the pipe and adjusting the pipe weld to be directly below the ultrasonic flaw detector 6 is provided on the base 1. The clamping mechanism includes a mounting platform 8. One side of the mounting platform 8 is fixed with... There is a second motor 10, and on the other side of the mounting platform 8, there is a mechanical claw 9 that can drive the pipe to rotate under the drive of the second motor 10. The mechanical claw 9 is a three-jaw mechanical clamping structure commonly used in the prior art. The clamping mechanism also includes two support frames 11. The top of the two support frames 11 is rotatably connected to guide wheels 12 for supporting the pipe. During operation, one end of the pipe is placed between the guide wheels 12 of the two support frames 11, and the other end of the pipe is clamped and fixed by the mechanical claw 9. Then, the second motor 10 is rotated so that the weld is facing upwards and directly facing the ultrasonic flaw detector 6.

[0030] Please see Figure 1 and Figure 2An ultrasonic flaw detector 6 has a coating mechanism 7 on one side. The coating mechanism 7 includes a movable frame 71. A storage tank 72 containing coupling agent is slidably connected above the movable frame 71. The storage tank 72 is fixed to the side of the ultrasonic flaw detector 6. The storage tank 72 is elastically connected to the movable frame 71 by a spring 73. A coating wheel assembly 74 that can roll on the pipeline is provided on the inner bottom of the movable frame 71. A conduit 75 that guides the coupling agent in the storage tank 72 to the coating wheel assembly 74 when the coating wheel assembly 74 rolls is provided on one side of the movable frame 71. A squeezing component 76 that squeezes the coupling agent evenly through the coating wheel assembly 74 onto the pipeline weld conduit 75 under the squeezing action is provided on the inner top of the storage tank 72. A brush 77 for applying the squeezed coupling agent to the pipeline weld is fixed on one side of the movable frame 71.

[0031] Please see Figure 3 , Figure 4 , Figure 5 and Figure 6 The movable frame 71 includes a fixed plate 711, with side frames 712 fixed at both ends of the fixed plate 711. A sliding groove 7121 is provided on the opposite side of each side frame 712. Sliding blocks 721, which are slidably connected to the sliding grooves 7121 on the two side frames 712, are fixed to both sides of the bottom of the liquid storage tank 72. A circular tube 713 is fixed to the top of the fixed plate 711, and a stopper plate 714 is fixed to the top of the circular tube 713. The bottom cavity of the liquid storage tank 72 is tapered, wider at the top and narrower at the bottom, and a stopper plate 714 is fixed inside the bottom opening to the circular tube 713. The sealing ring 722, which fits tightly against the outer wall, is used to seal the circular tube 713 when it slides up and down. The stopper 714 can fit against the conical bottom cavity of the liquid storage tank 72 under the elastic force of the spring 73. The top of the circular tube 713 is provided with a guide hole 7131 that communicates with the inner cavity of the liquid storage tank 72. When the spring 73 is compressed, the stopper 714 at the top of the circular tube 713 moves upward, so that the coupling agent in the liquid storage tank 72 can enter the circular tube 713 through the guide hole 7131, and then pass through the conduit 75 into the coating wheel assembly 74.

[0032] Furthermore, the spring 73 is sleeved on the outside of the round tube 713. The upper end of the spring 73 abuts against the bottom surface of the liquid storage tank 72, and the lower end of the spring 73 abuts against the top surface of the fixing plate 711. Under the natural state, the stopper disc 714 is in contact with the conical bottom cavity of the liquid storage tank 72 under the elastic force of the spring 73 to prevent the coupling agent from leaking out.

[0033] Furthermore, the coating wheel assembly 74 includes a roller 741 and a wheel axle 742 rotatably connected within the roller 741. Both ends of the wheel axle 742 are fixed to the side frame 712. The roller 741 has a plurality of radially distributed external through holes 7411, and the wheel axle 742 has an internal through hole 7421 corresponding to the external through holes 7411. One end of the conduit 75 is connected to the circular tube 713, and the other end of the conduit 75 is connected to the wheel axle 742. As the roller 741 rolls on the surface of the pipe, the external through holes 7411 on the roller 741 are vertically aligned with the internal through holes 7421 on the wheel axle 742, so that the coupling agent can be squeezed out through the external through holes 7411 and applied to the surface of the pipe, and then evenly brushed by the brush 77.

[0034] Furthermore, the extrusion component 76 includes a piston 761, which is slidably disposed inside the storage tank 72. A counterweight 762 is fixed to the top of the piston 761, and a pull rod 763 is fixed to the top of the counterweight 762. After the outer through hole 7411 on the roller 741 is vertically aligned with the inner through hole 7421 on the wheel axle 742, the coupling agent inside the storage tank 72 can be stably extruded under the pressure of the counterweight 762.

[0035] The working principle and usage process of this utility model are as follows: During operation, one end of the pipe is placed between the guide wheels 12 of the two support frames 11, and the other end of the pipe is clamped and fixed by the mechanical claw 9. Then, the second motor 10 rotates so that the weld seam faces upward and is directly opposite the ultrasonic flaw detector 6. In the initial state, the ultrasonic flaw detector 6 is located on the right side of the side plate 2. The lifting cylinder 5 pushes the coating mechanism 7 down until the roller 741 abuts against the surface of the pipe and compresses the spring 73. At this time, the stopper 714 at the top of the round pipe 713 moves upward, thereby coupling the liquid storage tank 72. The coupling agent can enter the circular tube 713 through the guide hole 7131, and then enter the wheel axle 742 through the conduit 75. Then, the first motor 4 drives the slide 3 to move to the left, so that the roller 741 rolls on the pipe surface. During this process, the outer through hole 7411 on the roller 741 is vertically aligned with the inner through hole 7421 on the wheel axle 742, so that the coupling agent can be squeezed out through the outer through hole 7411 and applied to the pipe surface. Then, it is evenly coated by the brush 77, and then ultrasonic flaw detector 6 is used to perform ultrasonic flaw detection along the length of the pipe weld.

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

Claims

1. A drainage pipe flaw detection device, comprising a base and a side plate fixed to one side of the base, wherein a first motor is fixed to the side of the side plate, and a slide block capable of lateral movement under the drive of the first motor is provided below the side plate, a lifting cylinder is fixed on the slide block, and an ultrasonic flaw detector is fixed to the output end of the lifting cylinder, characterized in that: The base is provided with a clamping mechanism for fixing the pipe and adjusting the pipe weld to be directly below the ultrasonic flaw detector. The ultrasonic flaw detector has a coating mechanism on one side, which includes a movable frame. A reservoir containing coupling agent is slidably connected to the top of the movable frame. The reservoir is fixed to the side of the ultrasonic flaw detector and is elastically connected to the movable frame via a spring. A coating wheel assembly that can roll on a pipe is provided on the inner bottom of the movable frame. A conduit is provided on one side of the movable frame to guide the coupling agent in the reservoir to the coating wheel assembly when the coating wheel assembly rolls. An extrusion component is provided on the inner top of the reservoir to evenly squeeze the coupling agent through the coating wheel assembly onto the conduit at the pipe weld under extrusion. A brush for applying the extruded coupling agent to the pipe weld is fixed on one side of the movable frame.

2. The drainage pipe flaw detection device according to claim 1, characterized in that: The clamping mechanism includes a mounting platform, a second motor is fixed on one side of the mounting platform, and a mechanical claw is provided on the other side of the mounting platform that can drive the pipe to rotate under the drive of the second motor.

3. The drainage pipe flaw detection device according to claim 2, characterized in that: The clamping mechanism also includes two support frames, the tops of which are rotatably connected to guide wheels for supporting the pipe.

4. The drainage pipe flaw detection device according to claim 1, characterized in that: The movable frame includes a fixed plate, with side frames fixed at both ends of the fixed plate. A sliding groove is provided on the opposite side of the two side frames. Sliding blocks that are slidably connected to the sliding grooves on the two side frames are fixed on both sides of the bottom of the liquid storage tank.

5. A drainage pipe flaw detection device according to claim 4, characterized in that: A circular tube is fixed to the top of the fixing plate, and a stopper is fixed to the top of the circular tube. The bottom cavity of the liquid storage tank is a cone shape that is wider at the top and narrower at the bottom, and a sealing ring that fits tightly against the outer wall of the circular tube is fixed inside the bottom opening. The stopper can fit against the cone-shaped bottom cavity of the liquid storage tank under the elastic force of the spring. A guide hole communicating with the inner cavity of the liquid storage tank is opened at the top of the circular tube.

6. A drainage pipe flaw detection device according to claim 5, characterized in that: The spring is sleeved on the outside of the circular tube, with the upper end of the spring abutting against the bottom surface of the liquid storage tank and the lower end of the spring abutting against the top surface of the fixing plate.

7. A drainage pipe flaw detection device according to claim 6, characterized in that: The coating wheel assembly includes rollers and a shaft rotatably connected inside the rollers. The two ends of the shaft are fixed to the side frame. The rollers have a number of radially distributed external through holes, and the shaft has an internal through hole corresponding to the external through holes.

8. A drainage pipe flaw detection device according to claim 7, characterized in that: One end of the conduit is connected to the round tube, and the other end of the conduit is connected to the wheel axle.

9. A drainage pipe flaw detection device according to claim 1, characterized in that: The extrusion component includes a piston, which is slidably disposed inside the liquid storage tank. A counterweight is fixed to the top of the piston, and a pull rod is fixed to the top of the counterweight.

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