EMAT electromagnetic ultrasonic transducer detection device for pipeline nondestructive testing
The EMAT electromagnetic ultrasonic transducer testing device uses electromagnetic waves to detect pipeline defects without coupling agent, overcoming the limitations of traditional methods in high-temperature and high-pressure environments, and achieving efficient and safe non-destructive testing of pipelines.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 吉林市特种设备检验中心(吉林市特种设备事故调查服务中心)
- Filing Date
- 2025-07-31
- Publication Date
- 2026-06-23
AI Technical Summary
Traditional ultrasonic testing methods have limitations in the use of coupling agents for pipeline inspection, especially in high temperature, high pressure or difficult-to-access environments where they cannot be effectively used. They also cannot detect deeply buried or enclosed pipeline sections, and traditional methods may damage the pipeline structure.
The EMAT electromagnetic ultrasonic transducer detection device emits induced electromagnetic waves through the transmitter and collects echo information through the receiver. It uses a power battery and signal transmission antenna for non-contact detection, and combines a forward drive wheel and a rotating track for the detection head to achieve all-round pipeline inspection.
It enables coupling agent-free detection in high-temperature environments, is applicable to various defect types, improves detection accuracy and speed, reduces damage to pipeline structures, and provides a safe and reliable pipeline integrity assessment.
Smart Images
Figure CN224399349U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipeline inspection technology, specifically to an EMAT electromagnetic ultrasonic transducer inspection device for non-destructive testing of pipelines. Background Technology
[0002] In the industrial sector, especially when it comes to critical infrastructure such as pipeline systems, ensuring system integrity and safety is paramount. Pipelines can be damaged by factors such as corrosion, cracks, and porosity, and traditional destructive testing methods can lead to production interruptions and high repair costs. Therefore, the need for non-destructive testing methods is becoming increasingly urgent. Traditional ultrasonic testing methods require the use of a coupling agent to propagate ultrasonic waves, but the use of coupling agents on pipelines can be limited, especially in high-temperature, high-pressure, toxic, or difficult-to-access environments. Furthermore, traditional methods may not be effective for deeply buried or enclosed pipeline sections. EMAT technology uses electromagnetic induction to generate and receive ultrasonic waves, thus eliminating the need for direct contact with the object being inspected. This means that in pipeline inspection, there is no need to apply glue or liquids to the pipeline surface, avoiding the problems that coupling agents can introduce. In high-temperature pipeline systems, the use of traditional methods can be limited by the melting of coupling agents. EMAT technology remains reliable even in high-temperature environments, making it suitable for fields such as petrochemicals and power generation. EMAT technology can be used to detect different types of defects, such as cracks, corrosion, porosity, and weld quality. This allows for a comprehensive assessment of the integrity and safety of pipeline systems. EMAT technology can not only detect defects but also evaluate the properties of pipe materials, such as elastic modulus and thickness. This provides engineers with more information about the performance of pipe materials. EMAT technology enables rapid detection without the need for coupling agents in the inspection area, thus reducing preparation time. In summary, the application of EMAT electromagnetic ultrasonic transducers in pipeline non-destructive testing provides a more efficient, accurate, and safer inspection method. It overcomes the limitations of traditional methods, especially in special environments, providing an innovative technical solution for ensuring the operational safety of industrial systems. Utility Model Content
[0003] This invention addresses the problems existing in the prior art by providing an EMAT electromagnetic ultrasonic transducer testing device for non-destructive testing of pipelines.
[0004] This utility model solves the above-mentioned technical problems through the following technical means:
[0005] An EMAT electromagnetic ultrasonic transducer testing device for non-destructive testing of pipelines includes a testing device, a pipeline, a crack, and a forward drive wheel. The upper end of the testing device is equipped with a retainer, and a power supply battery is fixedly installed on one outer surface of the testing device. The other end of the testing device is equipped with a testing head rotation track, and the outer surface of the testing head rotation track is equipped with a rotating device. The upper end of the rotating device is equipped with a transmitting electrode, and the lower end of the rotating device is equipped with a receiving electrode. A signal transmission antenna is fixedly installed on the upper end of the power supply battery.
[0006] Furthermore, the detection device is designed in a circular shape, and it is detachably connected to the outer wall of the pipe via a fixing device, with the detection device nested on the pipe.
[0007] Furthermore, the rotating device provides a rotational force to the detection head along the circumference of the pipe, and the forward drive wheel provides a force to propel the detection device along the axial direction of the pipe.
[0008] Furthermore, the emitting electrode emits induced electromagnetic waves that are transmitted to the surface of the pipe, the receiving electrode collects the echo information, and the information about the crack is sent to a remote processor via a signal transmission antenna for extraction, display, and reconstruction.
[0009] Furthermore, the power supply battery is fixedly connected to one side of the outer surface of the detection device, and the signal transmission antenna is fixedly connected to the upper outer surface of the power supply battery.
[0010] Beneficial effects
[0011] Compared with the prior art, this utility model provides an EMAT electromagnetic ultrasonic transducer testing device for non-destructive testing of pipelines, which has the following beneficial effects:
[0012] This EMAT electromagnetic ultrasonic transducer testing device for pipeline non-destructive testing offers numerous advantages, including no need for coupling agents, applicability to high-temperature environments, non-contact operation, detection of various defect types, high-precision and rapid measurement, applicability to various pipeline materials, adaptability to complex structures, and the ability to perform early detection and preventative maintenance. By combining traditional testing methods, summarizing their shortcomings and areas for improvement, a non-contact testing device and method were designed. This effectively avoids the damage to the internal structure and performance of pipelines caused by invasive methods, significantly reduces operator working time, enhances the continuous operation capability of equipment, and provides safety assurance and economic value for industrial production. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall planar structure of an EMAT electromagnetic ultrasonic transducer testing device for non-destructive testing of pipelines according to the present invention.
[0014] Figure 2This is a cross-sectional view of an EMAT electromagnetic ultrasonic transducer testing device for non-destructive testing of pipelines according to the present invention.
[0015] In the diagram: 1. Detection device; 2. Pipeline; 3. Power supply battery; 4. Fixer; 5. Detection head rotation track; 6. Emitter; 7. Crack; 8. Receiver; 9. Rotation device; 10. Signal transmission antenna; 11. Forward drive wheel. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0017] like Figure 1 and Figure 2 As shown, an EMAT electromagnetic ultrasonic transducer detection device for non-destructive testing of pipelines includes a detection device 1, a pipeline 2, a crack 7, and a forward drive wheel 11. The upper end of the detection device 1 is provided with a fixture 4. A power supply battery 3 is fixedly installed on one outer surface of the detection device 1. The other end of the detection device 1 is provided with a detection head rotation track 5. A rotating device 9 is provided on the outer surface of the detection head rotation track 5. The upper end of the rotating device 9 is provided with a transmitter 6, and the lower end of the rotating device 9 is provided with a receiver 8. A signal transmission antenna 10 is fixedly installed on the upper end of the power supply battery 3.
[0018] The detection device 1 is designed in a circular shape. The detection device 1 is detachably connected to the outer wall of the pipe 2 through the fixer 4. The detection device 1 is nested on the pipe 2.
[0019] The rotating device 9 provides rotational force to the detection head along the circumference of the pipe, and the forward drive wheel 11 provides force to the detection device 1 to move forward along the axial direction of the pipe 2.
[0020] The emitting electrode 6 emits induced electromagnetic waves that are transmitted to the surface of the pipe 2, and the receiving electrode 8 collects the echo information. The information of the crack 7 is sent to the remote processor through the signal transmission antenna 10 for extraction, display and reconstruction.
[0021] The power supply battery 3 is fixedly connected to one side of the outer surface of the detection device 1, and the signal transmission antenna 10 is fixedly connected to the upper outer surface of the power supply battery 3.
[0022] Working principle
[0023] The fixture is installed at the top of the device, and the entire device can be opened from the fixture position, facilitating its nesting into the outer wall of the pipe through a closed conduit. A signal transmission antenna is also installed at the top of the battery, facilitating the transmission of signals received by the receiver to a remote processor for observation. The outer wall of the detection device has a ring of rotating tracks for the detection head, allowing the detection head to rotate 360°. During installation in the pipe, the device must first be opened and nested into the pipe, then secured to the pipe by the fixture. The rotating mechanism provides rotational force to the detection head along the circumference of the pipe, while the forward drive wheel provides axial force for the detection device. The emitting electrode emits induced electromagnetic waves that are transmitted to the pipe surface. The echo information is collected by the receiving electrode and then transmitted by the signal transmission antenna to the remote processor for display and extraction, restoring and displaying crack information, and feeding back key parameters such as morphology and depth to maintenance personnel.
[0024] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. An EMAT electromagnetic ultrasonic transducer testing device for non-destructive testing of pipelines, comprising a testing device (1), a pipeline (2), a crack (7), and a forward propulsion wheel (11), characterized in that: The upper end of the detection device (1) is provided with a fixture (4), a power supply battery (3) is fixedly installed on one side of the outer surface of the detection device (1), a detection head rotation track (5) is provided at the other end of the detection device (1), a rotation device (9) is provided on the outer surface of the detection head rotation track (5), an emitter (6) is provided at the upper end of the rotation device (9), a receiver (8) is provided at the lower end of the rotation device (9), and a signal transmission antenna (10) is fixedly installed at the upper end of the power supply battery (3).
2. The EMAT electromagnetic ultrasonic transducer testing device for non-destructive testing of pipelines according to claim 1, characterized in that: The detection device (1) is designed in a circular shape. The detection device (1) is detachably connected to the outer wall of the pipe (2) through the fixer (4). The detection device (1) is nested on the pipe (2).
3. The EMAT electromagnetic ultrasonic transducer testing device for non-destructive testing of pipelines according to claim 1, characterized in that: The rotating device (9) provides the detection head with a rotational force along the circumference of the pipe, and the forward drive wheel (11) provides the detection device (1) with a force that propels it forward along the axial direction of the pipe (2).
4. The EMAT electromagnetic ultrasonic transducer testing device for non-destructive testing of pipelines according to claim 1, characterized in that: The transmitting electrode (6) emits induced electromagnetic waves that are transmitted to the surface of the pipe (2), the receiving electrode (8) collects echo information, and the information of the crack (7) is sent to the remote processor through the signal transmission antenna (10) for extraction, display and restoration.
5. The EMAT electromagnetic ultrasonic transducer testing device for non-destructive testing of pipelines according to claim 1, characterized in that: The power supply battery (3) is fixedly connected to one side of the outer surface of the detection device (1), and the signal transmission antenna (10) is fixedly connected to the upper outer surface of the power supply battery (3).