RU2650847C1 - Device for diagnostics of overhead power lines - Google Patents

Abstract

FIELD: electricity.

SUBSTANCE: invention relates to the electric power engineering and is intended for diagnosing the state and spatial position of various elements of overhead power lines. Claimed device comprises a helicopter-type aircraft, a control system, control units for overhead power lines and a power source, a moving means disposed in the body consisting of an engine associated with the running rollers and a pinch roller with a drive for pressing the test cable to the running rollers, while on the sides of the body there are guides fixed, facilitating the alignment of the running rollers with the test cable, wherein the pinch roller drive is fixed to the body such that the vertical plane of the pinch roller is positioned perpendicular to the test cable, the body is provided with a rotatable spring-biased overlapping element interacting with the axis of the pressure roller, with an abutment that interacts with the body, while the lower part of the overlapping element has a form of a cam with a groove into which the abutment of the spring-biased means enters, which in turn consists of two turning parts.

EFFECT: technical result is a complete elimination of the fall of the device from the cable during sharp landing.

9 cl, 11 dwg

Description

The 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, structural elements of a support, suspension clamp and anchor fastening of a lightning protection cable, fasteners of insulators, a string 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; BKK 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 that coincides with the studied cable. 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 is that the device is completely prevented from falling off the cable during a sharp landing.

In addition, undesirable lateral vibrations of the studied cable and the entire device are eliminated when the device is planted on the cable and take off from it.

The specified technical result is achieved in that 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 located in the housing means of movement, consisting of an engine connected to the running rollers, and a pressure roller with a drive used to press the test cable to the running rollers, while on the sides of the casing guides are fixed that facilitate the combination of running rollers with the study blown cable, the feature being that the pressure roller drive is fixed to the housing so that the vertical plane of movement of the pressure roller is placed at an angle to the cable being examined, the housing is equipped with a rotary spring-loaded overlapping element interacting with the axis of the pressure roller with a stop cooperating with the housing, moreover, the lower part of the overlapping element is made in the form of a cam with a groove interacting with the spring-loaded locking means, overlapping part of a narrow alignment, between ulation.

Additionally, the claimed device is characterized in that the plane of movement of the pinch roller is placed perpendicular to the test cable.

Additionally, the claimed device is characterized in that the rotary spring-loaded overlapping element is made in the form of a fork.

Additionally, the claimed device is characterized by the fact that a groove is made in the housing, in which a rotary overlapping element is placed, the axis of rotation of which is located in the lower part of the groove.

Additionally, the claimed device is characterized in that on the housing below the overlapping element there is an axis on which a spring-loaded locking means is fixed, consisting of two rotary parts of the lower and upper.

Additionally, the claimed device is characterized in that the lower rotary part is provided with a latch that interacts with the groove of the cam of the overlapping element.

Additionally, the claimed device is characterized in that the lower rotary part of the locking means is provided with an axis on which the spring-loaded upper part of the locking means is placed, partially overlapping a narrow target between the rails.

Additionally, the claimed device is characterized in that the axis of the pinch roller in the place of interaction with the rotary overlapping element is made expanded.

Additionally, the claimed device is characterized in that the guides in their narrow part are made rectilinear.

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 presence of a causal relationship between the set of essential features given in the claims 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 derive 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 determined 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); moreover, the front guides and control units 3 are not shown. FIG. 2 is a view along AA.

FIG. 3 is a view along BB at the moment of interaction of the test cable with the spring-loaded locking means at the time of landing on the cable.

FIG. 4 is a view along BB at the moment of interaction of the tested cable with an overlapping element.

FIG. 5 is a view along BB at the moment when the running rollers are located on the cable being examined.

FIG. 6 is a view along BB at the moment when the pinch roller presses the test cable to the rollers. The device is ready to move.

FIG. 7 is a view along BB at the moment when the entire device starts from the cable, but the cable has not yet left a narrow alignment between the guides.

FIG. 8 is a view along BB at the moment when the cable interacts with the locking means when leaving a narrow alignment between the guides.

FIG. 9 shows a pinch roller on an enlarged scale.

FIG. 10 illustrates an enlarged scale of an overlapping element with spring-loaded locking means

FIG. 11 - the totality of the position of the device relative to the investigated lightning protection cable.

The drawings show a device 1 for diagnosing overhead power lines, comprising an aircraft 2 of a helicopter type, a control system (not shown), control units 3, 4 of overhead power lines and a power source 5, a moving means, consisting of an engine 7, located in the housing 6, associated with the rollers 8, and the pressure roller 9 with the drive 10, used to press the test cable 11 to the rollers 8, while on the sides of the housing 6 are fixed guides 12, facilitating the combination of the rollers 8 with eduemym rope 11 placed between the supports 13 of the power line. The guides 12 in their narrow part are made linear, 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. On the side of the housing 6 there is a slot 14 in which a spring-loaded pivoting (spring acting clockwise, not shown) overlapping element 15 with a stop 16 interacting with the housing 6 is located, the bottom of the overlapping element 15 being made in the form of a cam 17 with a groove 18 interacting with the locking means, consisting of two rotary spring-loaded parts (springs not shown) of the lower 19 and upper 20. (see Fig. 10) The overlapping element 15 rotates on the axis 21. The lower spring-loaded (spring acts counterclockwise and not shown) part 19 of the locking means, is equipped with a latch 22 and rotates around axis 23. The upper spring-loaded (spring acts clockwise and not shown) part 20 rotates around axis 24, mounted on the lower part 19. The helicopter-type aircraft 2 is equipped with a protective the casing 25. The axis of the pinch roller 9 in the place of contact with the overlapping element 15 is made expanding 26.

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 an electronic stabilization device (not indicated), a control system (not indicated) and an electronic coordinate determination device (not indicated). 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.

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 upper part 20 of the locking means. The upper part of the locking means deviates upward (see Fig. 3). The cable 11 interacts with an overlapping element 15, which rotates around an axis 21 and deviates to the left (see Fig. 4). After passing the cable, the overlapping element 15 under the action of a spring (not shown) overlaps a narrow target between the guides 12 (see Fig. 5). If the landing turned out to be rigid, then the rollers 8 are in sharp contact with the cable. The cable bends, springs and throws the whole device. However, the overlapping element 15 does not allow the cable 11 to jump out of the narrow alignment between the guides 12 (see Fig. 5). The operator waits for the vertical vibrations to stop. 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 pushes the cable 11 to the travel rollers 8. At the same time, the axis of the pressure roller deflects its overlapping element 25 much to the left than when the investigated cable rejected it. In this case, the latch 22 enters the groove 18 and fixes the overlapping element in this position (see Fig. 6). 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 means of movement, the rollers 8 begin to rotate and the whole 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. The drive 10 is turned off. The aircraft 2 starts and the entire device 1 starts to rise (see Fig. 7). In this case, the studied cable 11 interacts with the upper spring-loaded part 20 of the locking device. That, in turn, presses on the lower part 19 of the locking device. As a result, the latch 22 comes out of the groove 18 and the overlapping element 15, under the action of the spring, overlaps the narrow target between the guides 12. After the studied cable 11 completely leaves the narrow alignment between the guides 12, the device 1 is set to its initial state. Further, the entire device rises above the right support 13 in position (D). After which 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:

- the 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: lightning protection cable, power wires, structural elements of the support, suspension clamp and anchor fastening of the lightning protection cable, fasteners of 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 the device is completely prevented from falling off the cable during a sharp landing. Overlapping and opening a narrow alignment between the guides is performed automatically. Any additional manipulations by the operator are excluded.

In addition, undesirable lateral vibrations of the studied cable and the entire device are eliminated when the device is planted on the cable and take off from it.

Claims (9)

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 guides are fixed on the sides of the housing to facilitate the combination of running rollers with the tested cable, characterized in that the drive is clamped The roller is mounted on the casing so that the vertical plane of movement of the pinch roller is placed at an angle to the cable being studied, the casing is equipped with a pivoting spring-loaded overlapping element interacting with the axis of the pressure roller with a stop cooperating with the casing, and the lower part of the overlapping element is made in the form of a cam with a groove, interacting with locking spring-loaded means, overlapping part of a narrow alignment, between the guides. 2. The device according to p. 1, characterized in that the plane of movement of the pinch roller is placed perpendicular to the test cable. 3. The device according to p. 1, characterized in that the rotary spring-loaded overlapping element is made in the form of a fork. 4. The device according to claim 1, characterized in that a groove is made in the housing, in which a rotary overlapping element is placed, the axis of rotation of which is located in the lower part of the groove. 5. The device according to claim 1, characterized in that an axis is mounted on the housing below the overlapping element, on which a spring-loaded locking means is fixed, consisting of two rotary parts - lower and upper. 6. The device according to p. 5, characterized in that the lower rotary part is provided with a latch interacting with the cam groove of the overlapping element. 7. The device according to p. 5, characterized in that the lower rotary part of the locking means is provided with an axis on which the spring-loaded upper part of the locking means is placed, partially overlapping a narrow target between the rails. 8. The device according to p. 1, characterized in that the axis of the pinch roller in the place of interaction with the rotary overlapping element is made expanded. 9. The device according to claim 1, characterized in that the guides in their narrow part are made rectilinear.

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