CN205488635U - Power distribution station is with high -pressure short to ground stick - Google Patents

Abstract

The utility model discloses a power distribution station is with high -pressure short to ground stick, include the insulator spindle and connect in the dop of its upper end, the upper portion of dop is for mating in the shorted segment of power distribution station arrester, and the lower part of dop is for mating in the locking section of arrester installation cross arm, and the locking section of operation insulator spindle control dop is locked on installing lightning arrester's cross arm, and the arrester earthing terminal links together with cross arm, ground lead, and the shorted segment is even as an organic whole with the arrester, can realize ground connection. It is thus clear that the utility model discloses satisfying conductive electrode contact closely, reaching that still to have the earth connection when ampere rule require stable reliable, be difficult for dropping, leading to the fact the damage to wire, arrester, drop out fuse etc.. Use many connections of insulator spindle of spiral shell twistlock lock joint head simultaneously, can accomplish the installation on ground, reduce and step on the pole risk, shorten the time of installing and removing, improve maintenance efficiency's advantage.

Description

High-voltage short-circuit grounding rod for distribution station area

technical field

The utility model relates to a high-voltage grounding rod, in particular to a high-voltage short-circuit grounding rod for a distribution station area.

Background technique

At present, maintenance work is being carried out on the 10kV distribution station area (such as low-voltage lead wire treatment, metering fault handling, transformer refueling, etc.), with all high-voltage lead wires insulated, how to install high-voltage grounding wires has become a headache. Although most of the newly installed distribution stations are equipped with electrical inspection grounding rings, and some areas have double-layer drop-out fuses, most of the rural areas have not installed electrical inspection grounding rings. At the same time, all the high-voltage lead wires in the existing 10kV distribution station area have been insulated, and the zinc oxide arrester is installed vertically.

The existing common ground wire installation methods include the following:

1. There is a hidden danger of unstable contact when using double-tongue double-reed buckle-type flat-mouth or round-mouth spiral short-circuit grounding rods for installation of grounding wires.

2. Use a screw-type short-circuit rod, such as a buckle-type short-circuit rod. The bayonet of the buckle-type short-circuit rod is relatively tight. When the ground wire is removed, the grounding ring of the electric test will turn, and it may become loose, and many stations are not installed at all. Electrical grounding ring.

3. For the station area where the grounding ring for electric testing is not installed, the buckle-type short-circuit rod is usually hung on the pile head of the arrester. There are problems of difficult installation and poor contact. The rack shakes and falls, the connection stability is poor, and it is easy to fail.

4. For those with double-layer drop-out fuses, hang on the lower static contacts of the lower-layer drop-out fuses, but this grounding method may cause damage to the lower static contacts of the fuses.

Utility model content

The purpose of the utility model is to provide a high-voltage short-circuit grounding rod for a power distribution station that satisfies field conditions and electric power safety work regulations, is convenient to use, stable and reliable, and does not cause damage to field equipment.

The utility model discloses a high-voltage short-circuit grounding rod for a power distribution station area, which comprises an insulating rod and a chuck connected to the upper end thereof. The lower part is the locking section that matches the cross arm of the lightning arrester. The locking section of the operating insulating rod control chuck is locked on the cross arm of the lightning arrester. The grounding terminal of the lightning arrester is connected with the cross arm and the grounding lead. Connected as a whole, grounding can be realized.

Preferably, the chuck is E-shaped, including a longitudinal main rod and a rotating arm, an upper pressing plate and a lower pressing plate connected transversely to the main rod in sequence from top to bottom, and a short-circuit section is formed between the rotating arm and the upper pressing plate. There is a locking section between the upper and lower pressing plates.

As a preference, the top of the main rod is provided with a T-shaped round pin, and one end of the rotating arm is provided with a corresponding mounting hole, the rod of the T-shaped circular pin passes through the mounting hole, and the rod of the T-shaped circular pin protrudes The part outside the mounting hole is covered with a spring I, the lower end of the spring I is located on the rotating arm, and the upper end is fixed with the head of the T-shaped round pin.

Preferably, the opposite end of the installation hole of the rotating arm is provided with a positioning hole matching the pile head on the lightning arrester, and an elastic sleeve is provided above the positioning hole.

Preferably, the elastic sleeve includes a pin shaft, a spring II and an upper cover plate, a round hole is arranged in the axial center of the pin shaft, and the spring II is located in the axial center hole of the pin shaft.

Preferably, the positioning hole is a counterbore.

Preferably, a braided annealed copper wire to ensure conduction is connected between the elastic sleeve and the T-shaped round pin.

Preferably, the lower pressing plate is provided with a threaded hole, the upper end of the insulating rod is provided with a knob bolt, and the insulating rod and the lower pressing plate are connected through the knob bolt.

Preferably, the upper end of the knob bolt is located above the lower pressing plate, and the upper end of the knob bolt is connected with a movable pressure block.

Preferably, the main rod is provided with several oblong holes and ground wire screw holes.

When the utility model is used, the insulating rod is operated to control the locking section of the clamping head to be locked on the installation cross arm of the lightning arrester, and the short-circuit section is integrated with the lightning arrester to realize grounding. It can be seen that the utility model has the advantages of simple operation, convenient use, stability and reliability, and does not cause damage to field equipment.

At the same time, in order to facilitate the connection of the short-circuit section and the arrester, a T-shaped round pin is provided on the top of the main rod, and a corresponding installation hole is provided at one end of the rotating arm. The rod of the T-shaped round pin passes through the installation hole, and the T-shaped The part of the round pin rod extending out of the mounting hole is covered with a spring I, the lower end of the spring I is located on the rotating arm, and the upper end is fixed to the head of the T-shaped round pin.

In order to prevent damage to the pile head on the lightning arrester, a positioning hole matching the pile head on the lightning arrester is provided at the opposite end of the rotating arm mounting hole, and an elastic sleeve is provided above the positioning hole.

In order to smoothly connect with the pile head on the lightning arrester when the line of sight is not good, the positioning hole is designed as a countersunk hole.

In order to reduce the weight, several oblong holes are arranged on the main rod.

Description of drawings

Fig. 1 is a schematic front view of a preferred embodiment of the present invention.

FIG. 2 is an enlarged schematic view of the elastic sleeve in FIG. 1 .

Graphic serial number:

1—Insulation rod, 2—Clamp head, 3—Knob bolt, 4—Active pressure block, 21—Main rod, 22—Rotary arm, 23—Upper pressing plate, 24—Lower pressing plate, 25—T-shaped round pin, 26— Spring I, 27—elastic sleeve, 28—braided annealed copper wire, 271—pin shaft, 272—spring II, 273—top cover.

detailed description

As shown in Figure 1 and Figure 2, the high-voltage short-circuit grounding rod for the distribution station area disclosed in this embodiment includes an insulating rod 1, a clamp head 2 and a knob bolt 3, and one end of the knob bolt 3 is fixed on the top of the insulating rod 1 , and the other end is connected to the card head 2. Wherein the chuck head 2 is E-shaped, including a longitudinal main rod 21 and a rotating arm 22, an upper pressing plate 23 and a lower pressing plate 24 that are horizontally connected to the main rod from top to bottom, and the lower pressing plate 23 is provided with a knob. The threaded hole matched by the bolt 3, the upper end of the knob bolt 3 is connected with a movable briquetting block 4, and the movable briquetting block 4 is located between the upper pressing plate 23 and the lower pressing plate 24. A short-circuit section is formed between the rotating arm 22 and the upper pressing plate 23 , and a locking section is formed between the upper pressing plate 23 and the lower pressing plate 24 . The top of the main rod 21 is provided with a T-shaped round pin 25, and one end of the rotating arm 22 is provided with a corresponding mounting hole. The outer part is covered with spring I 26, the lower end of spring I 26 is located on the rotating arm 22, and the upper end is fixed with the head of T-shaped round pin 25. The opposite end of the mounting hole of the rotating arm 22 is provided with a countersunk hole matching the pile head on the lightning arrester, and an elastic sleeve 27 is provided above the countersunk hole. The elastic sleeve 27 includes a pin shaft 271, a spring II 272, an upper cover plate 273, and a pin shaft 271 A round hole is arranged towards the center, the spring II 272 is located in the axial center hole of the pin shaft 271, and the elastic sleeve 27 is connected with the rotating arm 22 through the upper cover plate 273 as a whole. A braided annealed copper wire 28 is connected between the elastic sleeve 27 and the T-shaped round pin 25 .

When using this embodiment, first connect one end of the grounding wire to the temporary grounding body or the grounding pole, and the other end to the main rod; then operate the insulating rod to install the chuck on the pile head of the lightning arrester through the countersunk hole; Then rotate the insulating rod to make the locking section at the lower end of the clamp head to the appropriate position, and drive the knob bolt to rotate through the insulating rod, so that the movable pressing block goes up and the upper pressing plate is locked on the cross arm of the lightning arrester to complete the installation of the grounding wire. The grounding soft copper wire matching the high-voltage short-circuit grounding rod achieves a double grounding effect. The installation method of the utility model is consistent with the method for installing the grounding wire stipulated in the "Electricity Safety Work Regulations".

Therefore, the high-voltage short-circuit grounding rod for the distribution station area proposed in this embodiment meets the tight contact of the conductive electrodes and meets the requirements of safety regulations. At the same time, it also has a solid and reliable grounding wire, which is not easy to drop, misaligned wires, lightning arresters, and drop fuses. damage to devices, etc. At the same time, multiple insulating rods connected by screw lock joints can be installed on the ground, reducing the risk of climbing rods, shortening the assembly and disassembly time, and improving the maintenance efficiency.

At the same time, by setting a T-shaped round pin on the top of the main rod, one end of the rotating arm is provided with a corresponding installation hole, the rod part of the T-shaped round pin passes through the installation hole, and the rod part of the T-shaped round pin extends out of the installation hole. The part of the spring I is covered with a spring I, the lower end of the spring I is located on the rotating arm, and the upper end is fixed with the head of the T-shaped round pin, which is convenient for the chuck and the arrester to be connected as a whole.

A positioning hole matching the pile head on the lightning arrester is provided at the opposite end of the mounting hole of the rotating arm, and an elastic sleeve is arranged above the positioning hole to prevent damage to the pile head of the lightning arrester during installation.

By designing the positioning hole as a countersunk hole, it is convenient to connect smoothly with the pile head of the arrester under the condition of poor sight.

By arranging several oblong holes on the main pole, the self-weight is reduced, and the utility model is easy to carry and operate.

Claims (10)

1. a power distribution station high voltage short circuit drop bar, including insulating bar and the dop being attached to end, it is characterized in that: the top of described dop is the shorted segment being matched with power distribution station arrester, the bottom of dop is to be matched with arrester to install the locking section of cross-arm, operation insulating bar controls the locking section of dop and lock onto on the cross-arm of zinc oxide surge arresters, arrester ground end links together with cross-arm, ground lead, and shorted segment is connected as a single entity with arrester, can be grounded.

Power distribution station the most according to claim 1 high voltage short circuit drop bar, it is characterized in that: described dop is E font, turning arm, top board and the lower platen including longitudinal mobile jib and being laterally connected in the most successively on mobile jib, it is shorted segment between turning arm and top board, for locking section between upper and lower pressing plate.

Power distribution station the most according to claim 2 high voltage short circuit drop bar, it is characterized in that: the top of described mobile jib is provided with T-shaped round pin, end, described turning arm one end is provided with corresponding installing hole, the bar portion of T-shaped round pin passes installing hole, T-shaped round pin bar portion stretches out the part outside installing hole and is cased with spring I, and the lower end of spring I is positioned on turning arm, the head of upper end and T-shaped round pin is fixed.

Power distribution station the most according to claim 3 high voltage short circuit drop bar, it is characterised in that: described turning arm installing hole opposite end is provided with the hole, location being matched with pile crown on arrester, and hole, location is arranged over resilient sleeve.

Power distribution station the most according to claim 4 high voltage short circuit drop bar, it is characterised in that: described resilient sleeve includes bearing pin, spring II and upper cover plate, and bearing pin axial centre is provided with circular hole, and spring II is positioned at bearing pin axial center hole.

Power distribution station the most according to claim 4 high voltage short circuit drop bar, it is characterised in that: hole, described location is counter sink.

Power distribution station the most according to claim 5 high voltage short circuit drop bar, it is characterised in that: it is connected the braiding annealed copper wire of guaranteed turn-on effect between described resilient sleeve with described T-shaped round pin.

Power distribution station the most according to claim 2 high voltage short circuit drop bar, it is characterised in that: described lower platen is provided with screwed hole, and the upper end of described insulating bar is provided with knob bolt, and insulating bar is connected by knob bolt with lower platen.

Power distribution station the most according to claim 8 high voltage short circuit drop bar, it is characterised in that: the upper end of described knob bolt is positioned at above lower platen, and the upper end of knob bolt connects movable holddown.

Power distribution station the most according to claim 2 high voltage short circuit drop bar, it is characterised in that: described mobile jib is provided with some slotted holes and earth connection screw.