Moving device for nondestructive testing of cable quality

Abstract

The utility model discloses a mobile device for nondestructive detection of cable quality, which relates to the technical field of cable detection and specifically structurally comprises a detection ring, a detection rod and a detection rod, the support frame is mounted above the detection ring; the plurality of rollers are arranged on the inner wall of the detection ring; the at least one temperature sensor is mounted on the inner wall of the detection ring; and the at least one piezoelectric ceramic sensor is mounted on the inner wall of the detection ring, and the piezoelectric ceramic sensor and the temperature sensor are arranged at an interval. According to the utility model, the technical problems of long time consumption and poor safety during the quality detection of the existing cable are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cable detection, in particular to a mobile device for non-destructively detecting the quality of cables. Background Technique

[0002] With the development of the economy, power cables have become an indispensable part of the power system due to their high power supply reliability, safety, and small occupied space.

[0003] However, affected by the laying and operating environment, the maintenance and repair of cables still mainly rely on the cooperation of multiple people, and the maintenance and repair processes need to be carried out under the open-circuit state, which not only has low efficiency and long duration but also has low safety. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a mobile device for non-destructively detecting the quality of cables, which solves the technical problems of long duration and poor safety in the prior art when detecting the quality of cables.

[0005] The embodiment of the present application discloses a mobile device for non-destructively detecting the quality of cables, including:

[0006] A detection ring sleeved on the cable;

[0007] A support frame installed above the detection ring;

[0008] A plurality of rollers arranged on the inner wall of the detection ring;

[0009] At least one temperature sensor installed on the inner wall of the detection ring;

[0010] At least one piezoelectric ceramic sensor installed on the inner wall of the detection ring, and the piezoelectric ceramic sensor is arranged at an interval from the temperature sensor.

[0011] The present application detects through the temperature sensor and the piezoelectric ceramic sensor to realize the inspection of the cable quality. At the same time, rollers are also provided to facilitate the stable movement of the entire detection ring.

[0012] Based on the above technical solutions, the embodiment of the present application can also be improved as follows:

[0013] Further, the detection ring is composed of two semi-circular rings hinged at one end, and an adjustment ring buckle is installed at the other end of the semi-circular ring. The beneficial effect of this step is that through the semi-circular ring, it is convenient for assembly and can also be applicable to cables of different sizes for detection.

[0014] Further, a protective cushion layer is provided on the inner wall of the detection ring, and assembly holes are provided at positions corresponding to the temperature sensor and the piezoelectric ceramic sensor on the protective cushion layer. The beneficial effect of this step is that the protective cushion layer can play a protective role and at the same time can also play a cleaning role.

[0015] Further, an inkjet unit is also provided on the support frame, and the nozzle of the inkjet unit faces the inner side of the detection ring. The beneficial effect of this step is to realize the inkjet function through the inkjet unit.

[0016] Further, the inkjet unit includes:

[0017] An ink cartridge, installed on the support frame;

[0018] A peristaltic pump, installed on the support frame, and the peristaltic pump is communicated with the inkjet unit;

[0019] A nozzle, installed on the detection ring, and the nozzle is communicated with the peristaltic pump. The beneficial effect of this step is to make a mark through the inkjet unit.

[0020] Further, the number of the rollers is at least 4, and the rollers are nylon wheels. The beneficial effect of this step is to ensure the stability of the movement through multiple rollers.

[0021] Further, the protective cushion layer is a latex layer or a memory foam layer. The beneficial effect of this step is that the corresponding layer can play a protection and safeguard role.

[0022] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0023] The present application can realize the functions of monitoring the electrical performance of the cable in the operating state and non-destructively detecting the cable structure. It is not limited by the laying environment and can meet the needs of most cable quality inspections and external sheath cleaning and maintenance. The detection method of the present application can also make the cable repair and maintenance more accurate, greatly saving manpower and material resources, and further increasing the safety of cable detection and monitoring. Description of the Drawings

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1Structural schematic diagram of a mobile device for non-destructively detecting the quality of a cable according to a specific embodiment of the present utility model;

[0026] 1 - Detection ring; 2 - Cable; 3 - Support frame; 4 - Roller; 5 - Temperature sensor; 6 - Piezoelectric ceramic sensor; 7 - Protection cushion layer; 8 - Assembly hole; 9 - Inkjet unit;

[0027] 101 - Semi-circular ring; 102 - Adjusting ring buckle;

[0028] 901 - Ink cartridge; 902 - Peristaltic pump; 903 - Nozzle. Specific implementation manner

[0029] Hereinafter, embodiments of the technical solution of the present utility model will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present utility model, and thus are only examples and cannot be used to limit the protection scope of the present utility model.

[0030] It should be noted that unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meaning understood by those skilled in the art to which the present utility model belongs.

[0031] In this application, unless otherwise clearly defined and limited, terms such as "installation", "connection", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0032] In order to better understand the above technical solution, the above technical solution will be described in detail below in combination with the accompanying drawings of the specification and the specific implementation manner.

[0033] Embodiment:

[0034] As Figure 1 shown, this application discloses a mobile device for non-destructively detecting the quality of a cable, which can detect the cable movably, including the electrical performance monitoring during the cable operation and the non-destructive detection of the cable structure. Its specific structure includes:

[0035] A detection ring 1, sleeved on the cable 2, where the cable 2 is the cable to be detected, and at the same time, the detection ring 1 can move along the cable 2;

[0036] A support frame 3, installed above the detection ring 1, where the support frame 3 is a frame and there is a space left on it for assembling subsequent other components;

[0037] A plurality of rollers 4 are arranged on the inner wall of the detection ring 1. The rollers 4 can drive the detection ring 1 to move stably along the cable 2. Specifically, the detection ring 1 can be pulled to move by an external force, or a power mechanism can be installed on the support frame 3 to cooperate with one of the rollers 4 and drive it to move, so as to achieve active movement, and thus the detection ring 1 moves along the cable;

[0038] At least one temperature sensor 5 is installed on the inner wall of the detection ring 1. The temperature sensor 5 can be used to complete the detection of the outer surface of the cable 2, that is, to detect the temperature;

[0039] At least one piezoelectric ceramic sensor 6 is installed on the inner wall of the detection ring 1, and the piezoelectric ceramic sensor 6 is arranged at an interval from the temperature sensor 5. The piezoelectric ceramic sensor 6 is used to achieve flaw detection.

[0040] When this application is in use, it needs to be connected to a corresponding electronic control unit for use to realize the work of each unit. The electronic control unit is an existing unit, including a wireless signal transmission controller, an alarm, a comparator, a memory, a power supply, a display screen, etc., so as to realize corresponding functions; among them, the main structure of the electronic control unit can be made of nylon or lightweight metal materials, used to display the detection results and alarm in real time, and is composed of a wireless signal transmission controller, an alarm, a comparator, a memory, a power supply and a display screen; the wireless signal transmission controller works bidirectionally. On the one hand, it is used to receive the signals transmitted by the mobile control end to realize the control of the driving unit to drive the detection ring to move axially along the cable; on the other hand, it is used to feedback the detection results to the mobile end; the alarm and the comparator work together. The comparator makes a health judgment on the received temperature signal and electrical signal. When the temperature signal or electrical signal is inconsistent with the historical health record, an unhealthy judgment is made, and an alarm signal is transmitted to the alarm. The alarm makes a "beep" sound to alarm, and at the same time feedbacks the alarm information to the wireless signal transmission controller, and then further transmits it to the mobile control end; the memory is used to store detection information, and the power supply supplies power to the entire device.

[0041] Among them, the support frame 3 of this application can be made of nylon or lightweight metal materials, used to connect the detection ring 1. At the same time, the aforementioned electronic control unit can also be installed on the support frame 3 or integrated into one place to achieve control.

[0042] In order to be applicable to various cables of different sizes, the detection ring 1 is composed of two semi-circular rings 101 hinged at one end, which can be hinged to each other or hinged to the support frame 3; an adjustment ring buckle 102 is installed at the other end of the semi-circular ring 101. Through the adjustment of the semi-circular ring 101, the size of the entire detection ring 1 can be adjusted to complete the detection.

[0043] Specifically, the detection ring 1 in the present application can be made of nylon or lightweight metal materials, and is mainly used for detecting structural damage and monitoring electrical performance of the cable.

[0044] In one embodiment, a protective cushion layer 7 is provided on the inner wall of the detection ring 1, and assembly holes 8 are provided at positions corresponding to the temperature sensor 5 and the piezoelectric ceramic sensor 6 on the protective cushion layer 7. The protective cushion layer 7 provided in the present application can be used to protect components such as the temperature sensor 5 and the piezoelectric ceramic sensor 6. Specifically, the protective cushion layer 7 is made of soft latex or memory foam material, and is divided into detection special type and cleaning and maintenance type, and can be replaced in time according to the outer diameter or loss condition of the cable, and should be determined according to specific circumstances during use. It is mainly used to protect the rollers and the cable sheath from mechanical scratches, and at the same time realize the cleaning and maintenance of the cable outer sheath.

[0045] When damage is detected and marking is required, an inkjet unit 9 is further provided on the support frame 3, and the nozzle of the inkjet unit 9 faces the inner side of the detection ring 1, that is, the inkjet unit 9 is used for inkjetting to make a mark.

[0046] Among them, the inkjet unit 9 includes:

[0047] An ink cartridge 901, installed on the support frame 3;

[0048] A peristaltic pump 902, installed on the support frame 3, and the peristaltic pump 902 is communicated with the inkjet unit 9;

[0049] A nozzle 903, installed on the detection ring 1, and the nozzle 903 is communicated with the peristaltic pump 902; when the damage position is detected, the peristaltic pump 902 is started to perform inkjetting, so as to form a mark for subsequent personnel to view.

[0050] Among them, the number of the rollers 4 is at least 4, and the rollers 4 are nylon wheels, which can better ensure non-destructive detection and realize the free movement of the detection device along the cable laying direction.

[0051] Specifically, the protective cushion layer 7 is a latex layer or a memory foam layer, which can protect the cable.

[0052] For further explanation of the present application, the detection ring 1 in the present application can be made of nylon or lightweight metal materials, and is mainly used for detecting structural damage and monitoring electrical performance of the cable.

[0053] A temperature sensor 5 is set for detection, which is based on the thermoelectric effect. When faults such as excessive current, leakage, and insulation damage occur in the cable, the temperature on the cable surface will rise. Therefore, this device uses the temperature sensor 5 to convert the temperature around the cable into corresponding temperature signals and transmit them to the electronic control unit. The electronic control unit compares the difference between the current temperature signal and the historical temperature signal to make a judgment on whether it is healthy. If the judgment result is unhealthy, an alarm message is transmitted to the alarm, and the alarm emits a "beep" alarm sound. At the same time, the alarm message is fed back to the wireless signal transmission controller and further transmitted to the mobile control terminal.

[0054] Among them, the flaw detection function is realized by piezoelectric ceramic sensors (PZT sheets) 6 symmetrically distributed on the inner side of the detection ring 1 based on the inverse piezoelectric effect and the piezoelectric effect. Half of the piezoelectric ceramic sensors (PZT sheets) 6 are used as excitation signal sensors, and the other half are used as receiving signal sensors. The specific working principle is as follows: When the PZT sheet used as the excitation signal sensor is subjected to high-frequency excitation, due to the inverse piezoelectric effect, the dielectric in the PZT sheet deforms and generates mechanical vibration to form stress waves. The stress waves propagate along the radial and axial directions of the cable and are received by the PET sheet used as the receiving signal sensor. Due to the piezoelectric effect, the stress waves are converted into electrical signals at this time and transmitted to the comparator and the memory. The comparator makes a judgment on whether the current cable structure is healthy. If the judgment is unhealthy, an alarm message is transmitted to the alarm, and the alarm emits a "beep" alarm sound. At the same time, the alarm message is fed back to the wireless signal transmission controller and further transmitted to the mobile control terminal.

[0055] The adjustable buckle in this application adopts a cable tie structure with a self-locking function and is made of nylon or lightweight metal materials. It is used to lock the detection ring outside the cable sheath and detect cables of different sizes according to the outer diameter of the cable.

[0056] The mobile control terminal described in this application is mainly used to transmit signals to the detection device, control the movement of the detection ring along the cable laying direction, and detect the cable structure and temperature conditions. At the same time, when receiving the alarm signal transmitted by the alarm, it transmits a signal to the inkjet unit to make a mark with a drop of ink for the later maintenance of the cable. This application can also be provided with a motor to provide kinetic energy so that the roller 4 can move along the cable laying direction.

[0057] The usage process of this application is as follows:

[0058] S1: Open the adjustable buckle, place the detection ring outside the cable sheath, control the roller to be as closely in contact with the cable outer sheath as possible, and lock the adjustable buckle.

[0059] S2: Turn on the switches of the electronic control unit and the mobile control terminal so that they can be connected through Bluetooth or a wireless network to achieve signal synchronization and interaction.

[0060] S3: Detection mode setting: Before the detection starts, set the detection mode on the mobile control terminal. For example, set the detection device to alarm at the faulty or abnormal part and stop immediately and mark it in real time; or set the detection device to work continuously and only alarm and mark at the abnormal or faulty part.

[0061] S4: Detection device calibration: The mobile control terminal controls the detection device to perform detections at different positions of the cable to evaluate whether the detection device can work normally and whether the detection results are accurate.

[0062] S5: The mobile control terminal controls the detection device to detect along the cable laying direction and mark the abnormal or faulty parts.

[0063] S6: The maintenance personnel perform further detections and repairs on the abnormal or faulty parts.

[0064] S7: After the detection is completed, turn off the power of the electronic control unit and the mobile control terminal, open the adjustable buckle, and remove the detection device.

[0065] In the description of the present utility model, a large number of specific details are described. However, it can be understood that the embodiments of the present utility model can be practiced without these specific details. In some instances, well-known methods, structures, and technologies are not shown in detail so as not to obscure the understanding of this specification.

[0066] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0067] Finally, it should be noted that: The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: They can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model, and they should all be covered within the scope of the claims and the specification of the present utility model.

Claims

1. A mobile device for non-destructively detecting the quality of a cable, characterized in that, Comprising: A detection ring sleeved on the cable; A support frame installed above the detection ring; A plurality of rollers disposed on the inner wall of the detection ring; At least one temperature sensor installed on the inner wall of the detection ring; At least one piezoelectric ceramic sensor installed on the inner wall of the detection ring, and the piezoelectric ceramic sensor is spaced apart from the temperature sensor.

2. The mobile device for non-destructively detecting the quality of a cable according to claim 1, wherein, The detection ring is composed of two semi-circular rings hinged at one end, and an adjustment ring buckle is installed at the other end of the semi-circular ring.

3. The mobile device for non-destructively detecting the quality of a cable according to claim 1, wherein, A protective cushion layer is provided on the inner wall of the detection ring, and assembly holes are formed at positions corresponding to the temperature sensor and the piezoelectric ceramic sensor on the protective cushion layer.

4. The mobile device for non-destructively detecting the quality of a cable according to claim 3, characterized in that, The protective cushion layer is a latex layer or a memory foam layer.

5. The mobile device for non-destructively detecting the quality of a cable according to claim 1, wherein, An inkjet unit is further provided on the support frame, and the nozzle of the inkjet unit faces the inner side of the detection ring.

6. The mobile device for non-destructively detecting the quality of a cable according to claim 5, characterized in that, The inkjet unit includes: An ink cartridge installed on the support frame; A peristaltic pump installed on the support frame, and the peristaltic pump is communicated with the inkjet unit; A nozzle installed on the detection ring, and the nozzle is communicated with the peristaltic pump.

7. The mobile device for non-destructively detecting the quality of a cable according to claim 1, characterized in that, The number of the rollers is at least 4, and the rollers are nylon wheels.

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