Corrosion magnetic ultrasonic sensor coupling device and horizontal inhaul cable

Abstract

The utility model provides a corrosion magnetostrictive ultrasonic sensor coupling device and a horizontal inhaul cable, the corrosion magnetostrictive ultrasonic sensor coupling device is arranged on the horizontal inhaul cable, the corrosion magnetostrictive ultrasonic sensor coupling device comprises four flexible coupling gaskets which are sleeved on the surface of a steel pipe, and the flexible coupling gaskets are arranged on the surface of the steel pipe. The three flexible coupling gaskets are respectively a first flexible coupling gasket, a second flexible coupling gasket, a third flexible coupling gasket and a fourth flexible coupling gasket; the coil is arranged on the surface of the steel pipe in a sleeving mode and comprises an inspection coil and an excitation coil, the inspection coil is located between the first flexible coupling gasket and the second flexible coupling gasket, and the excitation coil is located between the third flexible coupling gasket and the fourth flexible coupling gasket; the sensing unit comprises a receiving sensor group and an excitation sensor group, the receiving sensor group and the excitation sensor group are both composed of a plurality of sensors, the receiving sensor group is arranged on the first flexible coupling gasket and the second flexible coupling gasket, and the excitation sensor group is arranged on the third flexible coupling gasket and the fourth flexible coupling gasket.

Description

Technical Field

[0001] The utility model relates to the technical field of non-destructive testing, in particular to a rusted magneto-ultrasonic sensor coupling enhancement device and a horizontal cable. Background Art

[0002] With the continuous development of bridge engineering, long-span bridges have gradually become key infrastructure for modern transportation. Bridge cables are important load-bearing components of bridges. The corrosion of their internal steel wires poses a serious threat to the safety and service life of bridges.

[0003] Traditional cable inspection methods, such as visual inspection and surface coating testing, typically only detect surface defects and are ineffective against deeper corrosion in the wire. Furthermore, while acoustic emission testing and conventional ultrasonic testing can detect defects at a certain depth, they still have limitations in terms of sensitivity, penetration depth, and ease of use.

[0004] In order to solve these problems, magneto-ultrasonic guided wave technology, as an emerging non-destructive testing method, has gradually been applied to the inspection of bridge cables. Figure 1 This is a test principle diagram of traditional detection technology in the existing technology, such as Figure 1 As shown in Figure 2, early magneto-ultrasonic technology primarily employed a self-transmitting, self-receiving approach, where the same sensor served as both the signal transmitter and receiver. While this approach is simple in structure and operates externally on the material surface, effectively detecting materials with complex shapes, because both the transmitting and receiving signals share the same sensor, the signal propagation path is susceptible to various factors within the complex stress wave field within the cable, potentially leading to coupling and interference. This results in unstable detection results, particularly when identifying deep corrosion defects, limiting sensitivity and accuracy.

[0005] Therefore, the technical problem that needs to be solved urgently is: how to reduce signal coupling and interference and enhance the ability to detect deep corrosion defects inside the cable. Utility Model Content

[0006] The utility model is developed to solve the above problems and aims to provide a rust magneto-ultrasonic sensor coupling enhancement device and a horizontal cable, which can provide sufficient resolution when detecting rust and accurately identify and locate internal defects.

[0007] The utility model provides a rust magneto-ultrasonic sensor coupling enhancement device, which has the following characteristics: a flexible coupling gasket, which is sleeved on the surface of a steel pipe, and there are four flexible coupling gaskets in total, namely a first flexible coupling gasket, a second flexible coupling gasket, a third flexible coupling gasket and a fourth flexible coupling gasket; a coil, which is sleeved on the surface of the steel pipe, and the coil includes an inspection coil and an excitation coil, the inspection coil is located between the first flexible coupling gasket and the second flexible coupling gasket, and the excitation coil is located between the third flexible coupling gasket and the fourth flexible coupling gasket; and a sensing unit, which includes a receiving sensor group and an excitation sensor group, and the receiving sensor group and the excitation sensor group are both composed of a plurality of sensors, the receiving sensor group is arranged on the first flexible coupling gasket and the second flexible coupling gasket, and the excitation sensor group is arranged on the third flexible coupling gasket and the fourth flexible coupling gasket.

[0008] The rusted magneto-ultrasonic sensor coupling enhancement device provided by the present invention may also have the following features: a locking device, which is sleeved on the outside of the sensor device and is used to fasten the sensor to ensure the coupling performance of the sensor.

[0009] The rusted magneto-ultrasonic sensor coupling enhancement device provided by the present invention may also have the following feature: wherein the locking device is a spiral annular locking device.

[0010] The rust magneto-ultrasonic sensor coupling enhancement device provided by the present invention may also have the following feature: wherein the distance between the second flexible coupling pad and the third flexible coupling pad is 1.8-2.2 m.

[0011] The rust magneto-ultrasonic sensor coupling enhancement device provided by the present invention may also have the following feature: wherein the flexible coupling gasket is adhered to the surface of the steel pipe by double-sided tape.

[0012] The rusted magneto-ultrasonic sensor coupling enhancement device provided by the present invention may also have the following feature: wherein the sensing unit is adhered to the flexible coupling gasket by double-sided adhesive.

[0013] The rusted magneto-ultrasonic sensor coupling enhancement device provided by the present invention may also have the following feature: the sensing unit is coated with silver osmanthus on one side close to the flexible coupling gasket to increase the bonding force and enhance the coupling ability of the magneto-ultrasonic sensor.

[0014] The utility model also provides a horizontal cable having the following characteristics: wherein, a plurality of rusted magneto-ultrasonic sensor coupling-enhancing devices are arranged on the horizontal cable, and the rusted magneto-ultrasonic sensor coupling-enhancing devices adopt the above-mentioned rusted magneto-ultrasonic sensor coupling-enhancing devices.

[0015] The horizontal cable provided by the present invention may also have the following feature: there are four rust magneto-ultrasonic sensor coupling enhancement devices on the horizontal cable.

[0016] The horizontal cable provided by the present invention may also have the following feature: wherein the distance between the rusted magneto-ultrasonic sensor coupling enhancement devices is 170-280m.

[0017] Functions and effects of utility models

[0018] According to the rust magneto-ultrasonic sensor coupling enhancement device and horizontal cable involved in the utility model, because the utility model separates the transmitter and the receiver, and uses the magnetostrictive effect to transmit and receive ultrasonic signals respectively, the quality and sensitivity of the detection signal are effectively improved. Compared with the spontaneous transmission and reception mode, the rust magneto-ultrasonic sensor coupling enhancement device in the utility model can locate defects more accurately, especially in complex structures and deep detection, showing higher accuracy and reliability, thereby providing more reliable technical guarantee for the health monitoring of horizontal cables of bridges. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a test principle diagram of the traditional detection technology in the existing technology;

[0020] Figure 2 It is a structural schematic diagram of the horizontal cable in the embodiment of the present utility model;

[0021] Figure 3 This is a test principle diagram of the guided wave detection technology in the embodiment of the present utility model;

[0022] Figure 4 Schematic diagram of the structure of the coupling enhancement device of the rusted magneto-ultrasonic sensor in the embodiment of the present utility model;

[0023] Figure 5 2. It is a side view of the coupling enhancement device for a rusted magneto-ultrasonic sensor in an embodiment of the present utility model;

[0024] Figure 6 is a schematic structural diagram of a locking device in an embodiment of the present utility model; and

[0025] Figure 7 It is an exploded view of the locking device in the embodiment of the present utility model. DETAILED DESCRIPTION

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the following embodiments and accompanying drawings specifically illustrate the rusted magneto-ultrasonic sensor coupling enhancement device and horizontal cable of the present invention.

[0028] Figure 2 It is a structural schematic diagram of the horizontal cable in the embodiment of the present utility model.

[0029] like Figure 2 As shown, four corrosion magneto-ultrasonic sensor coupling devices 100 are set on the horizontal cable 200 to test the corrosion on the horizontal cable 200. The measurement points of the corrosion magneto-ultrasonic guided wave detection method are arranged as follows: the main bridge section is arranged from southeast to northwest, and steel plates 70 are set at both ends of the horizontal cable 200. The distance between the two steel plates 70 is 763.099 meters. The horizontal cable 200 is divided into 5 sections, and 4 test points are set on each horizontal cable 200. The arrangement of the test points is from Pudong side to The Puxi side is moved in sequence and set as test point 1, test point 2, test point 3, and test point 4 respectively. Each test point is equipped with a set of corrosion magneto-ultrasonic sensor coupling enhancement device 100. Among them, the distance between the steel base plate 70 on the Pudong side and the measuring point 1 is 86m, the distance between the measuring point 1 and the measuring point 2 is 179m, the distance between the measuring point 2 and the measuring point 3 is 205m, the distance between the measuring point 3 and the measuring point 4 is 273.099m, and the distance between the measuring point 4 and the steel base plate 70 on the Puxi end is 20m.

[0030] Figure 3 It is a test principle diagram of the guided wave detection technology in the embodiment of the present utility model.

[0031] like Figure 3 As shown, the rust magneto-ultrasonic sensor coupling enhancement device 100 on the horizontal cable 200 of the present invention separates the transmitter and the receiver, and utilizes the magnetostrictive effect to transmit and receive ultrasonic signals respectively, thereby improving the quality and sensitivity of the detection signal.

[0032] Figure 4 It is a structural schematic diagram of a coupling enhancement device for a rusted magneto-ultrasonic sensor in an embodiment of the present utility model. Figure 5It is a side view of the coupling enhancement device for the rusted magneto-ultrasonic sensor in an embodiment of the present utility model.

[0033] like Figure 4-5 As shown, the rusted magneto-ultrasonic sensor coupling enhancement device 100 in this embodiment is arranged on the steel pipe 50 of the horizontal cable 200, and includes a flexible coupling gasket 10, a coil 20, a sensor unit 30 and a locking device 60.

[0034] The flexible coupling gaskets 10 are adhered to the surface of the steel pipe 50 by double-sided tape. There are four flexible coupling gaskets 10, namely the first flexible coupling gasket 11, the second flexible coupling gasket 12, the third flexible coupling gasket 13 and the fourth flexible coupling gasket 14. The distance between the second flexible coupling gasket 12 and the third flexible coupling gasket 13 is 2m.

[0035] The coil 20 is sleeved on the surface of the steel pipe 50. The coil 20 includes an inspection coil 21 and an excitation coil 22. The inspection coil 21 is located between the first flexible coupling gasket 11 and the second flexible coupling gasket 12. The excitation coil 22 is located between the third flexible coupling gasket 13 and the fourth flexible coupling gasket 14.

[0036] The sensing unit 30 is attached to the flexible coupling gasket 10 by double-sided tape. The side of the sensing unit 30 close to the flexible coupling gasket 10 is also coated with silver osmanthus 40 to improve the bonding force and enhance the coupling ability of the magneto-ultrasonic sensor.

[0037] The sensing unit 30 includes a receiving sensor group 31 and an excitation sensor group 32. The receiving sensor group 31 and the excitation sensor group 32 are both composed of a number of sensors. The receiving sensor group 31 is arranged on the first flexible coupling pad 11 and the second flexible coupling pad 12, and the excitation sensor group 32 is arranged on the third flexible coupling pad 13 and the fourth flexible coupling pad 14.

[0038] Figure 6 It is a structural diagram of the locking device in an embodiment of the present utility model. Figure 7 It is an exploded view of the locking device in the embodiment of the present utility model.

[0039] like Figure 6-7 As shown, the locking device 60 is a spiral ring-shaped locking device 60 in the prior art, which is sleeved on the outside of the sensor device. The locking device 60 is used to fasten the sensor to ensure the coupling performance of the sensor.

[0040] The locking device 60 includes a locking knob 61, a connecting slot 62, a movable piece 64, a connecting rod 63 and a lock buckle 65 connected in sequence. By controlling the overlapping length of the movable piece 64 and fixing it through the locking knob 61, the degree of tightening of the sensor can be adjusted.

[0041] The installation steps of the rusted magneto-ultrasonic sensor coupling enhancement device 100 of the present invention are as follows:

[0042] 1. Clean the surface of the steel pipe 50: First, ensure that the surface of the steel pipe 50 of the horizontal cable 200 is clean and free of impurities in preparation for subsequent operations.

[0043] 2. Paste the flexible coupling gasket 10: Use double-sided tape to stick the flexible coupling gasket 10 on the surface of the steel pipe 50, ensuring that the gasket fits tightly to the steel pipe 50. The flexibility of the double-sided tape makes it easy to operate and paste.

[0044] 3. Use a dielectric coating: Apply Yin Gui Zhi 40 between the double-sided tape and the sensor to improve the coupling performance of the magnetoacoustic sensor. Yin Gui Zhi 40 has good adhesion, ensuring close contact between the sensor and the double-sided tape.

[0045] 4. Install the sensor: Install the magneto-ultrasonic sensor in place and check its bonding performance.

[0046] 5. Install the locking device 60: Use the locking device 60 to fix the sensor. The locking device 60 can be adjusted by moving left and right and rotating to ensure the coupling of the sensor and protect it from damage during the detection process.

[0047] The installation steps of the locking device 60 are as follows:

[0048] 1. First, connect the locking knob 61 to the connecting groove 62.

[0049] 2. Pass the connecting rod 63 through the connecting groove 62 and the small hole in the middle of the locking knob 61 to connect and fix it.

[0050] 3. After fixing the locking knob 61, the connecting groove 62 and the connecting rod 63, the movable piece 64 is snapped onto the connecting groove 62, and the movable piece 64 can be rotated in the small groove reserved in the connecting groove 62 to adjust the overlapping length.

[0051] 4. The lock buckle 65 is installed and fastened through the small hole inside the connecting rod 63 to ensure the stability of the entire device.

[0052] 5. After installation is completed, the entire device can be locked or loosened by the locking knob 61. In the loose state, adjust the overlapping length of the movable piece 64 to control the tightness of the sensor, and then adjust the locking knob 61 to the locked state to fix it.

[0053] Functions and Effects of the Embodiments

[0054] According to the rust magneto-ultrasonic sensor coupling enhancement device and horizontal cable involved in the utility model, because the utility model separates the transmitter and the receiver, and uses the magnetostrictive effect to transmit and receive ultrasonic signals respectively, the quality and sensitivity of the detection signal are effectively improved. Compared with the spontaneous transmission and reception mode, the rust magneto-ultrasonic sensor coupling enhancement device in the utility model can locate defects more accurately, especially in complex structures and deep detection, showing higher accuracy and reliability, thereby providing more reliable technical guarantee for the health monitoring of horizontal cables of bridges.

[0055] The utility model sticks the flexible coupling gasket on the steel pipe by using double-sided adhesive tape, and the flexibility of the double-sided adhesive tape makes it easy to operate and stick.

[0056] In the utility model, silver osmanthus is applied between the double-sided adhesive tape and the sensor, which not only enhances the bonding force between the sensor and the double-sided adhesive tape, but also improves the coupling performance of the magneto-ultrasonic sensor.

[0057] The utility model uses a locking device to fix the sensor, and the user can adjust the degree of fastening by moving it left and right and rotating it, thereby better protecting the sensor.

[0058] Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and the specification are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A rusted magneto-ultrasonic sensor coupling device, arranged on the steel pipe of the horizontal cable, characterized in that: include: Flexible coupling gaskets are sleeved on the surface of the steel pipe. There are four flexible coupling gaskets, namely a first flexible coupling gasket, a second flexible coupling gasket, a third flexible coupling gasket and a fourth flexible coupling gasket; A coil is sleeved on the surface of the steel pipe, the coil comprising an inspection coil and an excitation coil, the inspection coil is located between the first flexible coupling gasket and the second flexible coupling gasket, and the excitation coil is located between the third flexible coupling gasket and the fourth flexible coupling gasket; as well as The sensing unit includes a receiving sensor group and an excitation sensor group, each of which is composed of a plurality of sensors. The receiving sensor group is arranged on the first flexible coupling pad and the second flexible coupling pad, and the excitation sensor group is arranged on the third flexible coupling pad and the fourth flexible coupling pad.

2. The rust magneto-ultrasonic sensor coupling enhancement device according to claim 1, characterized in that: Also includes: The locking device is sleeved on the outside of the sensor device, and is used to fasten the sensor to ensure the coupling performance of the sensor.

3. The rust magneto-ultrasonic sensor coupling enhancement device according to claim 2, characterized in that: in, The locking device is a spiral annular locking device.

4. The rust magneto-ultrasonic sensor coupling enhancement device according to claim 1, characterized in that: in, The distance between the second flexible coupling pad and the third flexible coupling pad is 1.8-2.2 m.

5. The rust-corroded magneto-ultrasonic sensor coupling enhancement device according to claim 1, characterized in that: in, The flexible coupling gasket is adhered to the surface of the steel pipe by double-sided tape.

6. The corrosion magneto-ultrasonic sensor coupling enhancement device according to claim 1, characterized in that: in, The sensing unit is adhered to the flexible coupling pad by double-sided adhesive.

7. The corrosion magneto-ultrasonic sensor coupling enhancement device according to claim 6, characterized in that: in, The sensing unit is coated with silver osmanthus on one side close to the flexible coupling gasket, so as to improve the bonding force and enhance the coupling ability of the magneto-ultrasonic sensor.

8. A horizontal cable, characterized in that: A plurality of corrosion magneto-ultrasonic sensor coupling enhancement devices are provided on the horizontal cable, and the corrosion magneto-ultrasonic sensor coupling enhancement devices are the corrosion magneto-ultrasonic sensor coupling enhancement devices according to any one of claims 1 to 7.

9. The horizontal cable according to claim 8, characterized in that: in, There are four rust magneto-ultrasonic sensor coupling enhancement devices on the horizontal cable.

10. The horizontal cable according to claim 9, characterized in that: in, The distance between the rust magneto-ultrasonic sensor coupling devices is 170-280m.

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