Pipeline deformation detection device

Abstract

The utility model relates to a pipeline deformation detection device which comprises a cylinder, annular scrapers are installed at the front end and the rear end of the cylinder, a motor is installed in the front end of the cylinder, an output shaft of the motor is connected with a rotating rod extending out of the front end of the cylinder, and a cleaning assembly is installed on the rotating rod. A detection assembly is arranged outside the cylinder body, the detection assembly comprises a mounting plate and an ultrasonic probe which are connected to the surface of the cylinder body, the mounting plate is in a disc shape, and the ultrasonic probe is mounted on the surface of the mounting plate in a surrounding manner. According to the technical scheme, the cylinder is placed in the pipeline, the annular scrapers are installed at the front end and the rear end of the cylinder correspondingly, the annular scraper at the rear end of the cylinder is used for receiving gas or fluid to push the cylinder to move in the pipeline, and the annular scraper at the front end of the cylinder is matched with the cleaning assembly to rapidly clean attachments on the inner wall of the pipeline. And the detection data of the detection assembly on the inner wall of the pipeline is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline detection, in particular to a pipeline deformation detection device. Background Art

[0002] Pipelines are long-distance transportation facilities for gas, oil and other media, and are laid in various environments such as land and sea around the world. Safety is the most basic condition for pipeline operation. Therefore, safety measures must be taken in accordance with relevant laws and regulations at each stage of pipeline planning, design, construction, operation and maintenance. Particular attention should be paid to the early detection of leakage accidents and the prevention of leakage spread.

[0003] According to pipeline requirements, the pipeline cannot have a deformation greater than 10% D (D is the outer diameter of the pipeline), so it is necessary to regularly detect the deformation of the pipeline. In the prior art, the commonly used detection method is to use ultrasound to detect the inner wall of the pipeline. The principle of ultrasonic detection of pipelines is to use the different propagation speeds of sound waves in the fluid for detection. When the sound wave enters the pipeline, due to the certain thickness of the pipeline wall itself, the sound wave is reflected in the pipe, thereby attenuating or absorbing the sound wave energy. Therefore, if the sound wave power is greater than the sound pressure value in the fluid, abnormal vibration will occur; conversely, if the sound wave power is less than the wave impedance value in the pipe wall thickness, it means that the inside of the pipe body has been damaged and cannot be used normally.

[0004] The specific method is:

[0005] A walking device that can be moved in a pipeline is provided, and an ultrasonic detection component is installed on the walking device. When the walking device moves in the pipeline, the ultrasonic detection component emits ultrasonic waves to detect the inner wall of the pipeline. However, when detecting the inner wall of the pipeline, detection errors may occur due to attachments on the inner wall. Utility Model Content

[0006] In view of this, the purpose of the utility model is to provide a pipeline deformation detection device to solve the problem of detection errors caused by attachments on the inner wall of the pipeline in the prior art.

[0007] The utility model is realized by the following technical solutions:

[0008] A pipeline deformation detection device comprises a cylinder and a mounting cylinder, an annular scraper is installed at both the front and rear ends of the cylinder, a motor is installed in the front end of the cylinder, the output shaft of the motor is connected to a rotating rod, the end of the rotating rod away from the motor passes through the front end of the cylinder, and a cleaning assembly is installed on the rotating rod;

[0009] A detection assembly is arranged outside the cylinder, and the detection assembly comprises a mounting plate connected to the surface of the cylinder and an ultrasonic probe, the mounting plate is disc-shaped, and the ultrasonic probe is mounted on the surface of the mounting plate in a circumferential manner.

[0010] Furthermore, an external thread is provided at the front end of the rotating rod, and an internal thread is provided on the inner wall of the mounting tube. The mounting tube is installed at the front end of the rotating rod by cooperating with the internal thread and the external thread. The scraper is an annular structure and is sleeved on the outside of the mounting tube. Multiple connecting rods are provided between the scraper and the mounting tube, and the two ends of the connecting rods are respectively connected to the mounting tube and the scraper.

[0011] Furthermore, the outer edge of an annular scraper located at the front end of the cylinder is folded forward, and the outer edge of an annular scraper located at the rear end of the cylinder is folded backward. Fixed plates are provided at both ends of the cylinder, and the two fixed plates are respectively connected to the two annular scrapers.

[0012] Furthermore, a plurality of support rods are arranged outside the cylinder, the plurality of support rods are evenly surrounded outside the cylinder, one end of the support rods is connected to the cylinder body, and the other end extends radially outward. A mileage wheel is installed at one end of the support rods away from the cylinder body, and the support rods are elastic telescopic structures.

[0013] Furthermore, the support rod includes an outer rod and an inner rod. A connecting groove for inserting the inner rod is provided on one side of the outer rod. Limiting grooves connected to the connecting groove are provided on the left and right sides of the outer rod. The inner rod is located in the connecting groove. Limiting blocks matching the limiting grooves are provided at the lower ends of both sides of the inner rod. Return springs are provided on the surface of the outer rod and the inner rod.

[0014] Furthermore, the sliding sleeve at the front end of the installation tube is provided with an anti-collision head, which is a tubular structure with a closed front end. A support spring is arranged inside the anti-collision head, and both ends of the support spring respectively abut against the front end of the installation tube and the front end of the anti-collision head.

[0015] Furthermore, a plurality of ventilation holes for heat dissipation of the motor are provided on the cylinder.

[0016] The beneficial effects of the utility model are:

[0017] The pipeline deformation detection device places a cylinder into the pipeline, and annular scrapers are installed at both ends of the cylinder. The annular scraper at the rear end of the cylinder is used to receive gas or fluid to push the cylinder to move in the pipeline. The annular scraper at the front end of the cylinder cooperates with a cleaning component to quickly clean the attachments on the inner wall of the pipeline, so that the detection data of the inner wall of the pipeline by the detection component is more accurate.

[0018] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2 It is a top view of the utility model;

[0021] Figure 3 It is a cross-sectional view of the cleaning component of the utility model;

[0022] Figure 4 This is a schematic diagram of the anti-collision head structure of the utility model;

[0023] Figure 5 This is a schematic diagram of the internal structure of the support rod of the utility model;

[0024] In the figure: 1. Cylinder; 2. Fixed plate; 3. Annular scraper; 4. Support rod; 41. Outer rod; 42. Connecting groove; 43. Limiting groove; 44. Inner rod; 45. Limiting block; 5. Reset spring; 6. Mileage wheel; 7. Mounting plate; 8. Ultrasonic probe; 9. Motor; 10. Rotating rod; 11. Mounting cylinder; 12. Scraper; 13. Anti-collision head; 14. Support spring; 15. Air vent. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] In the above description of the utility model, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0029] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0030] See also Figure 1-5 The utility model provides a technical solution: a pipeline deformation detection device, including a cylinder 1, annular scrapers 3 are installed at both ends of the cylinder 1, a motor 9 is installed inside the front end of the cylinder 1, the output shaft of the motor 9 is connected to a rotating rod 10 extending from the front end of the cylinder 1, and a cleaning component is installed on the rotating rod 10; a detection component is arranged outside the cylinder 1, the detection component includes a mounting plate 7 connected to the surface of the cylinder 1 and an ultrasonic probe 8, the mounting plate 7 is disc-shaped, and the ultrasonic probe 8 is mounted on the surface of the mounting plate 7 in a surrounding manner.

[0031] The cylinder 1 can be used as an installation structure for the ultrasonic detection component. The outer diameters of the annular scraper 3 and the cleaning component are consistent with the inner diameter of the pipeline. When the cylinder 1 is in the pipeline, the annular scraper 3 at the front end of the cylinder 1 cooperates with the cleaning component to clean the attachments on the inner wall of the pipeline. The annular scraper 3 at the rear end of the cylinder 1 is used to receive gas or fluid to push the cylinder 1 to move in the pipeline; so that the attachments on the inner wall of the pipeline at the corresponding position of the cylinder 1 are reduced to improve the detection accuracy of the ultrasonic detection component; the cleaning component is connected to the output shaft of the motor 9 through the rotating rod 10, and can be driven to rotate by the motor 9. Its position is at the front end of the cylinder 1, and the attachments on the inner wall of the pipeline can be pre-cleaned or loosened. The power supply of the motor 9 and the ultrasonic detection component can be an external power supply connected by a wire, or a battery built into the cylinder 1.

[0032] When in use, align the annular scraper 3 at the front end of the cylinder 1 with the pipeline and put it in until the annular scraper 3 at the rear end of the cylinder 1 enters the pipeline. The annular scraper 3 at the rear end of the cylinder 1 is used to receive gas or fluid to push the cylinder 1 to swim in the pipeline. When the cylinder 1 swims in the pipeline, start the motor 9, and the motor 9 drives the rotating rod 10 connected to the output shaft to rotate. The rotation of the rotating rod 10 drives the cleaning component to rotate to pre-clean or loosen the attachments on the inner wall of the pipeline, and then the annular scraper 3 at the front end of the cylinder 1 pushes the attachments on the inner wall of the pipeline or the attachments cleaned by the cleaning component forward. Through the cooperation of the cleaning component and the annular scraper 3 at the front end of the cylinder 1, the attachments attached to the inner wall of the pipeline can be removed as much as possible, reducing the adverse effects of the attachments on the detection results.

[0033] The annular probe group of the ultrasonic probe 8 can be a single-row setting or a setting in which two or more rows of annular array probes are combined together. All probe chips are arranged at equal distances along the circumferential direction and combined together to complete full coverage of the circumferential direction of the pipeline. A microprocessor and an ultrasonic transducer are provided inside the cylinder 1.

[0034] When in use, since the cylinder 1 moves forward along the axis of the pipeline, ultrasonic waves are emitted by the ultrasonic transducer during the movement of the cylinder 1, and the ultrasonic probes 8 arranged in a ring form complete the full coverage detection of the passed pipeline and receive the ultrasonic echo. The microprocessor can measure the distance between the ultrasonic probe 8 and the inner wall of the pipeline by measuring the arrival time of the echo from the inner wall of the pipeline corresponding to each ultrasonic probe 8, thereby obtaining the measurement information of the geometric deformation of the pipeline, thereby feeding back the pipeline defects in a three-dimensional form to the remotely connected computer terminal, thereby making the detection more accurate.

[0035] Among them, the model of motor 9 is 1LE0001-1CB0, the model of microprocessor is AT89C51, the model of ultrasonic transducer is CY-13020, and the model of microprocessor is AT89C51.

[0036] In this embodiment: the front end of the rotating rod 10 is provided with an external thread, and the inner wall of the mounting tube 11 is provided with an internal thread. The mounting tube 11 is installed on the front end of the rotating rod 10 through the cooperation of the internal thread and the external thread. The scraper 12 is an annular structure and is sleeved on the outside of the mounting tube 11. A plurality of connecting rods are provided between the scraper 12 and the mounting tube 11, and the two ends of the connecting rods are respectively connected to the mounting tube 11 and the scraper 12.

[0037] The mounting tube 11 is mounted on the front end of the rotating rod 10 by means of internal and external threads. When in use, when it is necessary to inspect pipes of different models and sizes, it is convenient to remove the mounting tube 11 from the rotating rod 10 and replace the scraper 12 with a different diameter, so that the scraper 12 is suitable for inspecting pipes of different models and sizes.

[0038] In this embodiment: the outer edge of an annular scraper 3 located at the front end of the cylinder 1 is folded forward, and the outer edge of an annular scraper 3 located at the rear end of the cylinder 1 is folded backward. Fixed plates 2 are provided at both ends of the cylinder 1, and the two fixed plates 2 are connected to the two annular scrapers 3 respectively.

[0039] The two annular scrapers 3 and the two fixed plates 2 are connected by bolts. When in use, the outer edge of the annular scraper 3 located at the rear end of the cylinder 1 is folded backward to facilitate receiving gas or fluid to push the cylinder 1 to move in the pipeline, and the annular scraper 3 folded backward can expand outward when under pressure to improve the sealing effect with the inner wall of the pipeline, and the outer edge of the annular scraper 3 located at the front end of the cylinder 1 is folded forward. The annular scraper 3 cooperates with the cleaning component to achieve the effect of double cleaning of attachments, and when the two annular scrapers 3 are worn out due to excessive use or when pipelines of different models and sizes need to be inspected, the annular scrapers 3 can be removed by bolts for replacement.

[0040] In this embodiment: a plurality of support rods 4 are also arranged outside the cylinder 1, the plurality of support rods 4 are evenly surrounded outside the cylinder 1, one end of the support rods 4 is connected to the cylinder 1, and the other end extends radially outward, a mileage wheel 6 is installed at one end of the support rods 4 away from the cylinder 1, and the support rods 4 are an elastic telescopic structure.

[0041] When in use, the support rod 4 can be retracted and retracted by the elastic telescopic structure when facing pipes of different models and sizes, so that the mileage wheel 6 contacts the inner wall of the pipe, which is convenient for adapting to pipes of different models and ensures that the cylinder 1 is stably supported on the inner wall of the pipe.

[0042] In this embodiment: the support rod 4 includes an outer rod 41 and an inner rod 44, a connecting groove 42 for inserting the inner rod 44 is opened on one side of the outer rod 41, and limiting grooves 43 connected to the connecting groove 42 are opened on the left and right sides of the outer rod 41. The inner rod 44 is located in the connecting groove 42, and limiting blocks 45 adapted to the limiting groove 43 are provided at the lower ends of the left and right sides of the inner rod 44. The surface of the outer rod 41 and the inner rod 44 is sleeved with a return spring 5.

[0043] A limit plate is provided at the top of the inner rod 44, and the two ends of the return spring 5 respectively abut against the limit plate and the cylinder 1. When in use, the inner rod 44 is retracted into the connecting groove 42 of the outer rod 41 by pressing the limit plate, and the limit block 45 at the lower end of the inner rod 44 moves simultaneously in the limit groove 43, so that the diameter of the multiple support rods 4 evenly surrounded by the cylinder 1 is smaller than the diameter of the inner wall of the pipe. When the multiple support rods 4 enter the inner wall of the pipe, the inner rod 44 automatically pops out from the connecting groove 42 of the outer rod 41 under the action of the return spring 5 until the mileage wheel 6 contacts the inner wall of the pipe, which is convenient for adapting to pipes of different models.

[0044] In this embodiment: the sliding sleeve at the front end of the installation tube 11 is provided with an anti-collision head 13, the anti-collision head 13 is a tubular structure with a closed front end, and a support spring 14 is arranged inside the anti-collision head 13, and the two ends of the support spring 14 respectively abut against the front end of the installation tube 11 and the front end of the anti-collision head 13.

[0045] When in use, the anti-collision head 13 is located at the front end of the mounting cylinder 11, which can reduce the damping of the cylinder body 1 during the detection driving process and has the effect of buffering and reducing pressure.

[0046] In this embodiment, a plurality of ventilation holes 15 for heat dissipation of the motor 9 are provided on the cylinder 1 .

[0047] When in use, the heat generated after the motor 9 is started can be dissipated through the vent holes 15 .

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A pipeline deformation detection device, comprising a cylinder (1) and a mounting cylinder (11), wherein an annular scraper (3) is mounted on both the front and rear ends of the cylinder (1), characterized in that: A motor (9) is installed in the front end of the cylinder (1); the output shaft of the motor (9) is connected to a rotating rod (10); an end of the rotating rod (10) away from the motor (9) passes through the front end of the cylinder (1); and a cleaning assembly is installed on the rotating rod (10); A detection assembly is arranged outside the cylinder (1), and the detection assembly comprises a mounting plate (7) connected to the surface of the cylinder (1) and an ultrasonic probe (8); the mounting plate (7) is disc-shaped, and the ultrasonic probe (8) is mounted around the surface of the mounting plate (7).

2. The pipeline deformation detection device according to claim 1, characterized in that: The front end of the rotating rod (10) is provided with an external thread, and the inner wall of the mounting tube (11) is provided with an internal thread. The mounting tube (11) is mounted on the front end of the rotating rod (10) by means of the internal thread and the external thread. The scraper (12) is an annular structure and is sleeved outside the mounting tube (11). A plurality of connecting rods are provided between the scraper (12) and the mounting tube (11), and the two ends of the connecting rods are respectively connected to the mounting tube (11) and the scraper (12).

3. The pipeline deformation detection device according to claim 1, characterized in that: The outer edge of an annular scraper (3) located at the front end of the cylinder (1) is folded forward, and the outer edge of an annular scraper (3) located at the rear end of the cylinder (1) is folded backward. Fixed plates (2) are provided at both the front and rear ends of the cylinder (1), and the two fixed plates (2) are respectively connected to the two annular scrapers (3).

4. A pipeline deformation detection device according to claim 1, characterized in that: A plurality of support rods (4) are also arranged outside the cylinder (1). The plurality of support rods (4) are evenly arranged around the outside of the cylinder (1), and one end of the support rods is connected to the cylinder (1), while the other end extends radially outward. A mileage wheel (6) is installed at one end of the support rod (4) away from the cylinder (1), and the support rod (4) is an elastic telescopic structure.

5. The pipeline deformation detection device according to claim 4, characterized in that: The support rod (4) comprises an outer rod (41) and an inner rod (44); a connecting groove (42) for inserting the inner rod (44) is provided on one side of the outer rod (41); limiting grooves (43) communicating with the connecting groove (42) are provided on the left and right sides of the outer rod (41); the inner rod (44) is located in the connecting groove (42); limiting blocks (45) matching the limiting grooves (43) are provided at the lower ends of the left and right sides of the inner rod (44); and return springs (5) are sleeved on the surfaces of the outer rod (41) and the inner rod (44).

6. According to the pipeline deformation detection device of claim 1, the front end sliding sleeve of the mounting tube (11) is provided with an anti-collision head (13), the anti-collision head (13) is a tubular structure with a closed front end, and a support spring (14) is arranged in the anti-collision head (13), and the two ends of the support spring (14) respectively abut against the front end of the mounting tube (11) and the front end of the anti-collision head (13).

7. The pipeline deformation detection device according to claim 1, characterized in that: The cylinder (1) is provided with a plurality of ventilation holes (15) for heat dissipation of the motor (9).

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