JPH0445373Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a mounting structure for a hanging type sensor for an overhead power line that is connected to an overhead power line in order to detect a ground fault or the like.

[Prior Art] In an overhead electric line, an optical signal type insulator type sensor is suspended and connected to the electric wire of each phase, and each insulator type sensor is connected to a control box by an optical fiber wire.

[Problem that the invention aims to solve] However, since overhead electric wires are constantly swaying due to slight winds, etc., the insulator type sensor is swung together with the electric wire, and the connection between the electric wire and the detection part can be damaged by the moment load. In addition, during strong winds, the uneven movement of the electric wires could cause adjacent insulator sensors to collide and be damaged.

The object of this invention is to solve the above-mentioned problems and provide a mounting structure for a hanging type sensor for an overhead electric wire, which can protect the hanging type sensor by suppressing the movement of the hanging type sensor with respect to the overhead electric wire.

[Means for Solving the Problems] In order to solve the above-mentioned problems, in this invention, the detection part of the hanging type sensor is held between the overhead electric wires of each phase, and the detection part of the hanging type sensor is suspended and supported. The signal line connection portions of the type sensors are movably connected to each other by a spacing member.

[Function] The wire is held between the detection part of the hanging sensor and the adjacent signal line connection parts are connected by a spacing member, so even if the overhead wires swing, they restrain each other and reduce the swing. Since contact is prevented and swinging of the overhead wire is also suppressed, the moment load on the connecting portion between the overhead wire and the detection unit is alleviated, and the sensing ability is maintained without damaging the connecting portion.

[Example] Hereinafter, an example embodying this invention will be described in detail based on the drawings.

As shown in Figure 1, an insulator 3 is attached to the cross arm 2 of the utility pole 1.
An insulator type sensor serving as a hanging type sensor is suspended by being connected to the electric wire 4 supported by.

The insulator type sensor 5 includes an insulator 6, a detection section 7 provided on one side of the insulator 6, and a signal line connection section 8 provided on the other side. It is connected to a control box 10, which is a slave station installed on the utility pole 1, etc., and the detection signal from the insulator sensor 5 is relayed here.
It is transmitted via the communication line 11 to a substation or a business office, which is a master station in the system.

The insulator type sensor 5 is suspended by one detection part 7 holding the electric wire 4 between them, and the other signal line connection part 8 is connected to the signal line of the adjacent insulator type sensor 5 by a spacing member 12. It is connected to section 8.

The spacer 12 will be explained with reference to FIGS. 2 to 4. An insulating spacer 13 formed of an insulating material such as plastic into an elongated plate shape has bolts attached to both ends of the insulating spacer 13 via a presser foot 14 and a rubber cushion 15. A spacer connector 17 is tightened and fixed by 16. Furthermore, a fixture 18 is attached to the signal line connection portion 8 of the insulator type sensor 5, and a ring-shaped fixture 1 is attached to the fixture 18.
The spacer connector 17 is freely suspended and connected via the connector 9.

In the above, the spacer connector 17 is made of a square steel tube, and has a groove 17b formed by leaving the tube portion 17a on one side and making the other open.
A reinforcing rib 17c forming a side wall is formed. The insulating spacer 13 is connected to the spacer connector 1
It is inserted through the tube portion 17a of No. 7, attached to the groove portion 17b, and tightened and fixed as described above.

The insulation distance L1 between the pair of spacer connectors 17 is set based on the required insulation strength between the phases.

The fixing device 18 has its arcuate side surface 18a engaged with one side of the signal line connecting portion 8 of the insulator sensor 5, and is fixed by tightening with a bolt using the mounting hole 18b.

In the three-phase electric line, fixtures 18 are engaged on both sides of the middle phase insulator sensor 5.

For example, if a commercially available carabiner Harken is used, the annular stopper 19 can be moved through its movable opening 19a.
The connection can be made by inserting the spacer connector 17 or the fixing member 18 through the connector.

In the above, the connection length L2 between the fixtures 18 of adjacent insulator type sensors 5 and the spacer connector 17
The connection length L3 between the two is set as L2≒L3, and the relationship between the connection length L4 of the annular stopper 19 and the insulation distance L1 of the insulating spacer 13 is practically as follows: L2(L3)-2L4≧L1. It is set.

In addition, in the present invention, if the insulating spacer 13 is lengthened and directly connected to the annular stopper 19, the presser foot 14, the rubber cushion 15, and the spacer connector 17 can be omitted.

Next, the operation of the insulator type sensor mounting structure constructed as above will be explained.

In the above, the insulator type sensor 5 suspended from the electric wire 4 of each phase has an annular stopper 19 and an insulating spacer 13.
Since they are connected by a spacing member 12 having a spacer 12, uneven movement between them can be stopped, contact can be prevented, and damage due to collision can be avoided. Furthermore, the movement of the electric wire 4 is suppressed and the amplitude of vibration is reduced, so that the moment of movement of the insulator sensor 5 at the clamping point of the electric wire 4 is reduced.
The burden of friction and torsional load is alleviated and damage is prevented, and the function of the detection unit 7 can be prevented from being degraded due to water intrusion or moisture absorption.

Further, since the spacing member 12 is configured to be movable by the annular stopper 19, it is possible to alleviate unexpected impact loads.

Further, since interphase insulation is maintained by the insulating spacer 13 of the spacing member 12, it is possible to prevent short circuits in the lines.

[Effects of the invention] As described in detail above, this invention has the effect of preventing damage and functional failure of the hanging type sensor provided on the overhead power line and increasing the reliability of track monitoring.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the mounting structure of an insulator type sensor for overhead electric wires, Fig. 2 is a front view showing a spacing member connecting the insulator type sensors, Fig. 3 is a plan view of Fig. 2, and Fig. 4 2 is a sectional view taken along line A-A in FIG. 2. 4...Electric wire, 5...Insulator type sensor, 6...Insulator, 7...Detection section, 8...Signal line connection section, 12...
...Spacer, 13...Insulating spacer, 19...
Annular stop.

Claims (1)

[Scope of utility model registration request] The detection part 7 of the hanging type sensor 5 is clamped and suspended from the overhead electric wire 4 of each phase, and the signal line connection part 8 of each hanging type sensor 5 is connected to the spacing member 12.
A mounting structure for hanging type sensors for overhead electric wires, characterized in that they are movably connected to each other.