RU197328U1 - Device for remote magnetic scanning of a metal rope - Google Patents

Abstract

The inventive utility model relates to mechanical engineering, electric power, as well as to railway, river and sea transport, bridges and cableways and can be used for magnetic scanning of metal cables used, in particular, in power lines (hereinafter - VL), on railways , ropeways, etc. A device for remote magnetic scanning of a metal rope includes an actuating unit comprising a housing supporting an electronic unit, a meter and a magnetic head, incl. a steel magnetic circuit with magnets located at its ends facing the channel for passage of the rope, and magnetically sensitive sensors located in the magnetic circuit connected to the electronic unit. The body with the help of screws is fixedly mounted in the contact tunnel of the unmanned aerial vehicle in its central part. The unmanned aerial vehicle is equipped with rollers for moving along the rope, in the lower part of the hull there are hinges and adjusting screws for installing and adjusting the magnetic head, ensuring a constant position of the head relative to the scanned rope, as well as spring-loaded hinges for installing and adjusting the meter counter. In the front and rear of the magnetic head mounted spring-loaded guide rollers for positioning the magnetic head on the rope. The control unit contains a control board and an interface board for connecting the control board with the unmanned aerial vehicle and for controlling the device on-board computer of the unmanned aerial vehicle and powering the device from the power supply system of the unmanned aerial vehicle. The technical result is to increase the security of the magnetic scanning process by providing delivery capabilities the executive unit (magnetic scanner) of the device on the overhead line remotely without Ia man by incorporation into the device of a drone. 3 ill.

Description

The claimed utility model relates to mechanical engineering, electric power, as well as to railway, river and sea transport, bridges and cableways and can be used for magnetic scanning of metal cables used, in particular, in power lines (hereinafter - VL), on railways , cable cars, etc.

The problem of wire breaks and lightning protection cables on overhead lines, which had unacceptable defects that were not identified, is one of the most acute for electric grid facilities that have developed their standard resource, since this leads to a significant number of accidents on overhead lines.

Timely identification and elimination of defects of cables (cores) is of great importance to ensure uninterrupted power supply to consumers.

The prior art device for remote non-destructive testing by the method of magnetic scanning of wires of Overhead LineCore manufactured by HydroQuebec. The device includes a housing carrying a control unit, a magnetic head containing two steel half-cylinders with a through hole for passing a metal rope and equipped with a mechanical device for closing and opening half-cylinders using electric motors. The body of the device is made of steel. (Linecore - a corrosion detector for ACSR conductors [Electronic resource]. - URL: http://www.hydroquebec.com/robotics/distribution-solutions-linecore.html (accessed June 20, 2019).

A disadvantage of the known device is its excessively large mass, the complexity of the design and the need to manually deliver the device to the overhead line by lifting a fitter on a crane.

The technical result, which the claimed utility model is directed to, is to increase the security of the magnetic scanning process by providing the ability to deliver the executive unit (magnetic scanner) of the device to the overhead line remotely without human intervention by incorporating an unmanned aerial vehicle into the device. At the same time, it is possible to use an unmanned aerial vehicle with low carrying capacity or the ability to place additional diagnostic or other equipment (a video camera, thermal imager, equipment for repairing a rope, etc.) on board an aircraft by reducing the weight of the executive unit and simplifying its design due to reducing the number of parts in it.

The specified technical result is achieved due to the fact that the device for remote magnetic scanning of a metal cable includes an actuator unit containing a housing that holds an electronic unit, a meter counter and a magnetic head that includes a steel magnetic circuit with magnets located at its ends facing the channel for the passage of the rope, and magnetically sensitive sensors located in the magnetic circuit connected to the electronic unit, according to a utility model, the housing with screws movably mounted in the contact tunnel of the unmanned aerial vehicle in its central part, while the unmanned aerial vehicle is equipped with rollers for moving along the rope, hinges and adjusting screws for installing and adjusting the magnetic head are located in the lower part of the body, ensuring a constant position of the head relative to the scanned rope, and spring-loaded hinges for installing and adjusting the meter meter; guides are installed in the front and rear of the magnetic head s rollers for positioning a magnetic head on a rope, wherein the control unit comprises a control board and an interface board adapted for connection with the control board unmanned aircraft and provide a control device on-board computer of the drone and the power supply device from the power supply system of the drone.

In the front upper part of the unmanned aerial vehicle, a video camera module can be installed to visually monitor the rope scanning process.

The inventive utility model is illustrated by drawings, where:

in FIG. 1 schematically shows a front view of an actuator unit of a device for remote magnetic scanning of a metal rope;

in FIG. 2 schematically shows a side view of an actuator unit of a device for remote magnetic scanning of a metal rope;

in FIG. 3 schematically shows a bottom view of a device for remote magnetic scanning of a metal rope.

According to figures 1-3, a device for remote magnetic scanning of a metal cable includes an actuator unit comprising a housing 1 in which an electronic unit (not shown) is located, a meter 2 and a magnetic head 3. The magnetic head 3 includes a steel magnetic circuit with magnets located at its ends (not shown in the drawing), facing the channel for the passage of rope 4 (wires or overhead lines), and magnetically sensitive sensors located in the magnetic circuit (not shown in the drawing), sub locked to the electronic unit. The device for remote magnetic scanning of a metal rope implements the method of non-destructive testing of the cross-sectional area and detection of local defects of extended ferromagnetic objects, described in RF patent No. 2204129.

The electronic unit contains a control board and an interface board (not shown in the drawing) for connecting the control board with the unmanned aerial vehicle 5 and for controlling the device on-board computer of the unmanned aerial vehicle 5 and powering the device from the power supply system of the unmanned aerial vehicle 5.

For normal, without hard blows, the passage of defects protruding on the surface of the wire and the cable, spring-loaded guide rollers 6 are installed in the front and rear of the magnetic head 3, which cover the cable (wire) and guide it coaxially to the magnetic head. In this case, an air gap arises between the magnetic head and the cable (wire). The rollers 6 are designed to position the scanned rope 4 in the magnetic head 3.

In the lower part of the housing 1 are hinges 7.1 and adjusting screws 8 for installing and adjusting the magnetic head 3, ensuring a constant position of the magnetic head 3 relative to the scanned rope 4, as well as hinges 7.2 for installing and adjusting the meter 2.

The meter 2 is attached to the rear of the housing 1 and is designed to determine the distance traveled by the device for remote magnetic scanning of a metal rope, and to determine the position of defects on the scanned rope relative to the point of movement of the device. The housing 1 of the device for remote magnetic scanning of a metal rope using screws 7 is installed in the contact tunnel of an unmanned aerial vehicle 5, located in its central part.

The housing 1 can be made of plastic, for example, polycarbonate, which helps to reduce the weight of the device.

The unmanned aerial vehicle 5 is equipped with rollers 9 for moving the device along the rope 4.

In the front upper part of the unmanned aerial vehicle 5, a video camera module (not shown) can be installed to provide visual control of the rope scanning process.

A device for remote magnetic scanning of a metal rope works as follows.

Carry out a preliminary setup of the device for remote magnetic scanning of a metal rope. Before scanning a specific brand of wire (ground wire), it is necessary to adjust the hinge 7.1 of the magnetic head 3 to the required height depending on the outer diameter of the wire (ground wire) 4. Two adjustment screws 8 are also provided for this.

An unmanned aerial vehicle 5, controlled by a program previously stored in the memory of the aircraft, sits on the cable 4. After the scanned wire 4 enters the channel of the magnetic head 3, the unmanned aerial vehicle 5 translates along the cable 4 using the rollers 9, thereby moving the device for remote magnetic scanning of a metal rope.

The blocks of the rollers 6 when hitting an obstacle raise the device to the height of the defect. At the same time, they allow maintaining the equidistance of the cable (wire) from the sensors, which ensures stability of the scanning quality. The spring suspension of the rollers 6 compensates for the lift when hitting a defect and provides a smooth movement of the device without bouncing.

During the passage of a small external defect (for example, the place of welding of the aluminum wire of the external coil), one of the guide rollers 6 will bend for a short time on the spring due to the high speed of the flaw detector, and then return to its original position.

During the passage of a long external defect (for example, lights), all the rollers 6 will be shifted to a position corresponding to equal forces in the springs of the rollers, thereby allowing local thickenings and bends of the cable (wire) to pass without large deviations from alignment.

A device for remote magnetic scanning of a metal cable magnetizes a portion of the cable being monitored 4. Magnetic scattering fields caused by defects of the cable 4 create an electrical signal at the output of the magnetically sensitive sensors, which, after amplification and digitalization, is processed in the control board. The control board also receives pulses from the meter 2. The received information is transmitted to the computer of the unmanned aerial vehicle 5 for storage, processing and subsequent analysis.

If the cable section was not straightforward (bent or has an inclination relative to the vector connecting the axles of the wheels), the hinge 7.1 of the magnetic head 3 will allow it to maintain its position, while the electronic unit will have an inclination relative to the cable or wire 4.

After the scan is completed, the unmanned aerial vehicle 5 rises from the scanned rope 4 and is undocked from the rope 4 of the device for remote magnetic scanning.

Thus, the inventive device for remote magnetic scanning of a metal rope allows you to diagnose the condition of the wires (ground wire) and identify defects from the ground without rising to the overhead line and without disconnecting the overhead line, thereby increasing the safety of the magnetic scanning process and eliminating the likelihood of injury by operating personnel in the process conducting a scan.

Claims (1)

A device for remote magnetic scanning of a metal rope, which includes an actuator block containing a housing that holds an electronic block, a meter counter and a magnetic head that includes a steel magnetic circuit with magnets at its ends facing the channel for the passage of the rope, and magnetically sensitive magnetic conductors located in the magnetic circuit sensors connected to the electronic unit, characterized in that the housing with the screws is fixedly mounted in the contact tunnel of the unmanned aerial vehicle of the apparatus in its central part, while the unmanned aerial vehicle is equipped with rollers for moving along the rope, hinges and adjusting screws for installing and adjusting the magnetic head are located in the lower part of the hull, ensuring a constant position of the head relative to the scanned rope, as well as spring-loaded hinges for installation and adjustment of the meter meter, spring-loaded guide rollers are installed in the front and rear of the magnetic head for positioning the magnetic head on the rope, etc. This control unit comprises a control board and an interface board adapted for connection with the control board unmanned aircraft and provide a control device on-board computer of the drone and the power supply device from the power supply system of the drone.

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