RU2645772C1 - Device for diagnostics of overhead power lines - Google Patents

Abstract

FIELD: electricity.

SUBSTANCE: invention relates to power engineering and is intended for diagnosing the state and spatial position of the following elements: overhead protection cable, power cables, support structure elements, suspension clamp and anchor fasteners of overhead protection cable, insulator fasteners, insulator strings, vibration dampers and other equipment. Claimed device comprises helicopter type aircraft, control system, control blocks of overhead power lines and power supply, moving means, located in the body and consisting of engine connected to running rollers, and pressure roller with drive to clamp the test cable to the running rollers, and guides are mounted on the sides of the housing to facilitate the alignment of the running rollers with the cable being examined, the guides in the narrow part are made straightline, the pinch roller drive is fixed to the housing so that the vertical plane of the pinch roller is placed perpendicular to the cable being examined, and the housing is provided with a suspension spring loaded hook interacting with the pinch roller drive, the bottom of which is made bevel-edged.

EFFECT: guides are simplified, size of the body and its weight are reduced, falling device during a sharp landing is completely prevented.

3 cl, 5 dwg

Description

The present invention relates to the electric power industry and is intended for diagnosing the state and spatial position of the following elements: lightning protection cable, power wires, support structure elements, suspension clamp and anchor fastening of lightning protection cable, fasteners of insulators, garland of insulators, vibration dampers and other equipment.

A similar device for diagnosing overhead power lines is known, consisting of a robot moving near and along overhead power lines through a lightning protection cable or power wire, controlling the movement of a device for diagnosing overhead power lines along overhead power lines using a drive system, controlling the operation of overhead line monitoring devices power transmission [CN 102317040, IPC B25J 13/08; B60K 16/00, 02/10/2011].

A similar device for diagnosing overhead power lines is known, which comprises a control system, a set of sensors for detecting the status of power lines and the self-propelled diagnostic device moving along overhead power lines and through their supports a drive system and a capture device [JP 2012257372, IPC H02G 1/02 , 06/08/2011].

The disadvantage of these devices is the inability to conduct diagnostics in the absence of special equipment necessary to place the device for diagnosing overhead power lines on a lightning protection cable, for example, a crane, or to overcome anchor supports where the direction of the lightning protection cable changes to a certain angle.

A similar device for diagnosing overhead power lines is known, which contains a control system, overhead power line monitoring devices connected to a battery, housed in a housing and connected to a motor drive system, configured to fix the position of the device for diagnostics relative to a lightning protection cable or power wire and provide its movement along and near overhead power lines. Moreover, the device for diagnosing overhead power lines contains a helicopter-type aircraft connected to the battery, including a control system and attached to the body from the outside [US 20060114122, IPC H04Q 9/00, H02G 1/02, 05/15/2003].

However, this similar device has such a drawback as the complexity of the initial installation of the device on a lightning protection cable or power wire due to the lack of elements that provide the path of the lightning protection cable or power wire, respectively, inside the diagnostic device.

The closest device of the same purpose to the claimed invention in terms of features is a device for diagnosing overhead power lines, comprising a helicopter-type aircraft, a control system, control units for overhead power lines and a power source, a moving means located in the housing, consisting of an engine associated with running rollers, and a pressure roller with a drive, which serves to press the test cable to the running rollers, while on the sides of the housing are fixed razvivayuschie, facilitating the combination of running rollers with the studied cable [RU 2558002, IPC G01R 31/08, 07/27/2015]. This device is taken as a prototype.

The disadvantage of the prototype is that the pinch roller moves in a vertical plane. As a result, we have to make the guides stepped, and when landing on the studied cable and taking off from the cable, undesirable lateral vibrations of the cable and the entire device arise.

In addition, when abruptly landing on a cable, the latter bends, springs up and discards the entire device. And since at this moment the helicopter creates minimal thrust, that is, it is almost turned off, the device falls to the ground sideways or even downward with the helicopter.

The technical result consists in eliminating undesirable lateral vibrations of the studied cable and the entire device when landing the device on the cable and take off from it, as well as in the complete elimination of the fall of the device from the cable during a sharp landing.

The specified technical result is achieved by the fact that in the proposed device for the diagnosis of overhead power lines containing a helicopter-type aircraft, a control system, control units for overhead power lines and a power source located in the housing means of movement, consisting of an engine connected to the running rollers, and a pressure roller with a drive, which serves to press the test cable to the running rollers, and on the sides of the housing are fixed guides that facilitate the combination of running p According to the invention, the guides in the narrow part are made straight, the drive of the pinch roller is fixed to the housing so that the vertical plane of movement of the pinch roller is placed at an angle to the test cable, and the housing is equipped with a suspended spring-loaded hook interacting with the drive of the pinch roller, the bottom of which is made beveled.

Additionally, the claimed device is characterized in that the plane of movement of the pinch roller is placed at an angle, for example, 90 degrees to the test cable.

Additionally, the claimed device is characterized in that the helicopter-type aircraft is at least a two-propeller helicopter with a protective limiter, an electronic stabilization device, a control system and an electronic device for determining coordinates.

In the study of the distinguishing features of the described device for the diagnosis of overhead power lines, no similar known solutions were found to eliminate lateral vibrations of the studied cable and the entire device when installing the rollers on the cable, which shows the existence of a causal relationship between the set of essential features given in the formula invention, and the above technical result. This proves the materiality of the features of the claims.

The analysis of the prior art by the applicant, including a search by patent and scientific and technical sources of information, and the identification of sources containing information about analogues of the claimed invention, allowed to establish that the applicant did not find an analogue characterized by features that are identical (identical) to all the essential features of the claimed invention. The definition from the list of identified analogues of the prototype, as the closest in the set of essential features of the analogue, allowed to identify the set of essential distinguishing features in relation to the applicant's technical result in the claimed device set forth in the claims.

Therefore, the claimed invention meets the condition of "novelty."

To verify the conformity of the claimed invention with the condition "inventive step", the applicant conducted an additional search for known solutions in order to identify signs that match the distinctive features of the claimed device from the prototype. The search results showed that the claimed invention does not follow explicitly from the prior art for a specialist, since the influence of the transformations provided for by the essential features of the claimed invention on the achievement of a technical result is not revealed from the prior art as defined by the applicant, in particular, the following transformations are not provided for by the claimed invention:

- the creation of a tool consisting of known parts, the choice of which and the relationships between them are based on known rules, recommendations, and the technical result achieved in this case is due only to the known properties of the parts of this tool and the relationships between them.

Therefore, the claimed invention corresponds to the level of "inventive step".

The invention is illustrated by drawings, where

FIG. 1 is a projection of a device for diagnosing overhead power lines (left view);

FIG. 2 is a projection of a device for diagnosing overhead power lines (left view) with a raised hook;

FIG. 3 is a view along AA;

FIG. 4 - an enlarged scale shows a pinch roller with a drive and an element interacting with a hook;

FIG. 5 - a set of provisions of the device relative to the ground wire. The drawings show a device 1 for diagnosing overhead power lines, comprising a helicopter type aircraft 2, a control system (not shown in the drawing), control units 3, 4 of overhead power lines and a power source 5, a moving means consisting of an engine located in the housing 6 7, associated with the running rollers 8, and the pressure roller 9 with the drive 10, used to press the test cable 11 to the running rollers 8, while the guides 12 are fixed to the sides of the housing 6, facilitating the combination of the running rollers s 8 with a test rope 11 placed between the supports 13 of the power line. The guides 12 in their narrow part are made rectilinear, and the drive 10 of the pressure roller 9 is mounted on the housing 6, so that the vertical plane of movement of the pressure roller 9 is placed at an angle to the cable 11, for example, at an angle of 90 degrees. Inside the housing 6, on the axis 14, a hook 15 is suspended having a spring 16, an abutment 17 and a beveled bottom 18. The actuator 10 is provided with an element 19 for interacting with the abutment 17 of the hook 15.

If in the prototype the plane of movement of the pinch roller was strictly vertical and coincided with the studied cable, now the verticality of the plane remains, but the plane itself is rotated perpendicular to the studied cable 11.

The helicopter type aircraft 2 is equipped with a protective casing 20, an electronic stabilization device (not indicated in the drawings), a control system (not indicated in the drawings) and an electronic coordinate determination device (not indicated in the drawings). A power source 5 in the form of a battery is mounted on the outside of the housing 6. As control units 3, 4 overhead power lines, a high-resolution video camera with the ability to change focus over a wide range and additional control units can be used: a thermal imager for diagnosing the condition of power wires, a laser scanner for building a map of the track and clearing, an ultrasonic scanner for a lightning protection cable, an ultraviolet scanner for diagnosing discharges and corona, etc. Each of the control units 3, 4 is air x power lines are attached from the outside of the device 1 to its housing 6.

Roller 9 has three fixed positions. The leftmost position is shown in figure 1. The lower position (not shown in the drawing). The extreme right position is shown in figure 2. In the initial state, the roller 9 is in the lower position (not shown in the drawing). In this position, the roller 9 does not overlap the target between the guides 12 in their narrow part, and the hook 15 overlaps the target between the guides 12 (the position of the hook 15 is shown in figure 1).

Device 1 operates as follows.

The operator, using radio communications, launches a helicopter-type aircraft 2, which raises the entire device 1 from the ground surface (position A) above the lightning protection cable 11, then the device 1 lands on the cable 11 under study (position B). The guides 12 facilitate the alignment of the running rollers 8 with the cable 11 at the time of landing. The cable 11 enters a wide target, and then into a narrow target, interacts with the left guide 12 and with the beveled surface 18 of the hook 15. As a result, the hook 15 deviates to the right. After passing the cable, the hook 15 under the influence of its own weight and spring 16 overlaps the narrow target between the rails 12. If the landing turned out to be rigid, then the travel rollers 8 abruptly come into contact with the cable. The cable bends, springs and throws the whole device. However, the hook 15 does not allow the cable 11 to jump out of the narrow alignment between the guides 12. The operator waits until the vertical vibrations cease. Then, using radio communication, he turns off the aircraft 2 and turns on the drive 10 of the pressure roller 9. The latter enters the narrow target guide 12 and reliably compresses the cable 11 to the running rollers 8. The drive 10 of the pressure roller 9 is turned off. Device 1 is ready to perform diagnostics. When you turn on the engine 7 of the moving means, the running rollers 8 begin to rotate and the entire device 1 moves along the cable 11 from position (B) to position (C). At the moment of moving the device 1 along the cable, the latter is diagnosed. Having reached the obstacle (B), the operator turns off the engine 7 and turns on the drive 10 in the opposite rotation (counterclockwise). The pressure roller 9 begins to lower and releases the cable 11. The roller 9 leaves the narrow alignment of the guides 12, passes its lower position and begins to interact with the hook 15. The element 19 of the actuator 10 is in contact with the stop 17 of the hook 15. The hook begins to rise. In the extreme right position of the roller 9 (shown in figure 2), the hook 15 completely leaves the narrow alignment of the guides 12. The drive 10 is automatically turned off. The aircraft 2 starts and the entire device 1 rises above the right support 13 to position (D). The operator turns the actuator 10 in the opposite direction (clockwise). The drive automatically shuts off when the roller 9 is in the lower position (not shown in the drawing). In this case, the hook 15 will lower and block the narrow target between the guides. Next, the device 1 is landing on the cable 11 on the other side of the right support 13 (position D). The cycle repeats.

Thus, the above information indicates the fulfillment of the following set of conditions when using the claimed invention:

- a tool embodying the claimed invention in its implementation, is intended for use in the electric power industry for diagnosing the state and spatial position of the following elements: a phantom cable, power wires, structural elements of a support, a suspension clamp and anchor fasteners for a lightning protective cable, fasteners for insulators, a string of insulators, vibration dampers and other equipment;

- for the claimed device in the form as described in the independent clause of the claims, the possibility of its implementation using the means and methods described in the application or known prior to the priority date is confirmed;

- a tool embodying the claimed invention in its implementation, is capable of ensuring the achievement of the technical result perceived by the applicant.

An advantage of the invention is that when landing on the test cable and taking off from the cable, undesirable lateral vibrations of the cable and device do not occur, since the guides in the narrow part are made linear, rather than stepped. This became possible due to the rotation of the vertical plane of movement of the pinch roller to the test cable at an angle of 90 degrees. As a result, the pressure roller in the non-working position is completely removed from the alignment of the guides.

The technology of manufacturing guides is simplified.

In addition, the drive of the transport roller is now located very close to the studied cable, as a result, the size of the body and its weight are reduced.

In addition, with a sharp landing on a cable, the device is not reset from the cable.

Claims (3)

1. A device for diagnosing overhead power lines, comprising a helicopter-type aircraft, a control system, overhead power line monitoring units and a power source, a moving means housed in the housing, consisting of an engine coupled to the travel rollers and a pressure roller with a drive for pressing the test cable to the running rollers, while on the sides of the casing guides are fixed, facilitating the combination of the running rollers with the tested cable, characterized in that the guides in their narrow parts are made rectilinear, the pinch roller drive is fixed to the case so that the vertical plane of the pinch roller movement is placed at an angle to the cable being studied, and the case is equipped with a suspended spring-loaded hook interacting with the pinch roller drive, the bottom of which is beveled. 2. The device according to p. 1, characterized in that the plane of movement of the pinch roller is placed at an angle, for example, 90 degrees to the studied cable. 3. A device for diagnosing overhead power lines according to claim 1, characterized in that the helicopter type aircraft is at least a two-propeller helicopter with a protective limiter, an electronic stabilization device, a control system and an electronic coordinate determination device.

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