JPH0465606B2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) This invention cleans insulators that have been soiled by typhoons, soot, seasonal winds, etc., maintains the designed insulation strength, and prevents disasters caused by soiling of the insulators. The present invention relates to an insulator washer for cleaning insulators used in electrical stations and power transmission lines while the wires are live.

(Prior Art) Insulators in use at electrical stations, power transmission lines, etc. are contaminated by typhoons, soot, seasonal winds, etc., resulting in a decrease in insulation strength, leading to flashover accidents. For this reason, an insulator cleaning machine for cleaning and removing contaminants adhering to the surface of an insulator has been proposed. This insulator washer includes a pump for pressurizing water, a water hose connected to the pump, an operating rod connected to the water hose, and an injection nozzle located on the axis of the operating rod. It is composed of.

(Problems to be Solved by the Invention) Therefore, in the conventional insulator washer, the operating rod is electrically conductive because the washing water is sent to the injection nozzle through the operating rod, and therefore, during the cleaning operation, the operating rod is electrically conductive. To prevent electrical shock accidents, the distance between the live parts and the injection nozzle must be at least a certain distance depending on the voltage, which makes cleaning difficult, and the injection pressure of the injection nozzle must be maintained above a certain value. There are problems such as the necessity to use cleaning water having a specific volume resistivity value higher than a predetermined value.

In addition, since the spray nozzle is located on the axis of the operating rod, it is difficult to clean inside the folds of the insulator. Therefore, multiple spray nozzles are prepared at different angles and the spray can be sprayed depending on the area to be cleaned. Cleaning work is performed by replacing nozzles, which poses a problem in that work efficiency is low.

Structure of the Invention (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention has an injection nozzle attached to the tip of the operating rod 13 made of an insulating material through a mounting rod, so that the injection nozzle is aligned with the axis of the operating rod. At the same time, the operating rod is provided with a water tank on the distal end side of the operating part, and this water tank 18 and the injection nozzle are communicated with each other by a water pipe provided along the mounting rod, The injection nozzle is supplied with compressed gas from a compressed gas supply source through a compressed gas supply conduit provided along the operating rod and the attachment rod.

(Function) Since a water tank is provided between the operating part of the operating rod and the injection nozzle, there is no water between the operating part and the water tank, and insulation is ensured by the operating rod. Water in the tank is injected from the injection nozzle using compressed gas, making the water droplets finer and increasing the electrical insulation of the cleaning water flow itself. Furthermore, there is no need to ensure that the volume resistivity of the cleaning water exceeds a predetermined value, and safe live wire cleaning work can be performed.

In addition, an injection nozzle provided eccentrically at the tip of the operating rod via a mounting rod with respect to the axis of the operating rod is inserted between each insulator, and cleaning work can be easily performed without replacing the injection nozzle. Work efficiency is improved.

(Example) Hereinafter, an example embodying this invention will be described in the first to
Figure 4 will be explained.

FIG. 1 shows an insulator chain 1 made up of a plurality of suspended insulators 2 mounted on a transmission line tower (not shown), and an insulator cleaning machine 10 of the present invention. At the end of the flexible air supply hose 11 connected to a compressed gas supply source (not shown) installed on the ground, there is a tubular handle made of an insulating material that also serves as an air supply hose via a joint 12. A rod 13 is connected for relative rotation.

As shown in FIGS. 1 and 2, the operating rod 13
The base end of a mounting tube 16 is attached as a mounting rod to the distal end of the operating rod 13, and an injection nozzle 15 is attached to the distal end of the mounting tube 16 eccentrically with respect to the axis of the operating rod 13. Although not shown, the operating rod 13 and the mounting pipe 16 communicate with each other through their hollow parts, and in this embodiment, air is supplied through the air supply hose 11 through the hollow parts of the operating rod 13 and the mounting pipe 16. Nozzle 1 injects compressed gas
A compressed gas supply line for supplying up to 5 is configured. In addition, the operating rod 13 has a proximal operating section 1.
A front annular water tank 18 shown in FIG. 4 is inserted so as to be relatively rotatable so as to be located between the valve 17 provided at 3a and the injection nozzle 15.
An air intake pipe 19 is provided at the top of the water tank 18 and also serves as a water supply port provided with a check valve (not shown).

The water tank 18 and the injection nozzle 15 communicate with each other through a water pipe 20 provided along the attachment pipe 16, and the water sent from the water tank 18 to the injection nozzle 15 is transferred from the air supply hose 11 to the operating rod 13. The compressed gas supplied through each hollow part of the attachment pipe 16 is sucked and mixed by the ventilate effect of the injection nozzle 15, and is sprayed in the form of mist.

The eccentricity L of the injection nozzle 15 is
Letting the outer diameter of 8 be D, it is given by L≧D/2.

The cleaning of the insulator 2 by the insulator washer 10 configured as described above will be explained.

First, when the injection nozzle 15 is inserted between each insulator 2 and the valve 17 of the operating part 13a is opened, compressed gas from the compressed gas supply source is supplied to the air supply hose 11.
The compressed gas is supplied to the attachment pipe 16 via the operating rod 13, and the water in the water tank 18 is suction-mixed by the injection nozzle 15, and the water is sprayed out from the injection nozzle 15.

Then, the operator rotates the operation part 13a in the direction of the arrow as shown in FIG. 3, so that the water spray area expands into an arc shape as shown by the two-dot chain line, and water is sprayed in all directions. , each insulator 2 is thoroughly cleaned.

Now, in this embodiment, since the injection nozzle 15 is provided eccentrically with respect to the axis of the operating rod 13 at the tip of the operating rod 13, the injection nozzle 15
By entering between each insulator 2 and rotating the operating rod 13, the water jet area is expanded in an arc shape, and the insulator 2 can be thoroughly cleaned. Therefore, compared to a conventional insulator washer in which the injection nozzle is replaced depending on the location to be cleaned, the insulator 2 can be easily cleaned and work efficiency can be improved.

Further, in this embodiment, the operating portion 1 of the operating rod 13
3a and the injection nozzle 15, there is no water at hand, and there is no risk of accidents from washing water, which is the most probable route in the past, and the live wire cleaning work of the insulator 2 can be done. can be done safely.

Furthermore, since the water tank 18 is formed in an annular shape in this embodiment, even when it is full of water or when the water level decreases as shown by the solid line, the center of gravity is located on the vertical line that includes the operating rod 13. Easy to handle.

The above example describes in detail the cleaning work of suspension insulators among the insulators for power transmission line towers, but this is also applicable to cleaning other insulators, such as long trunk insulators, insulator pipes used in electrical stations, and support insulators. The same is basically true in the case of .

In addition, this invention may be implemented as follows.

(1) Although not shown, an air supply hose 11 is provided along the operating rod 13 and the attachment rod 16, and the tip of the hose 11 is directly connected to the injection nozzle 15.

(2) In the above embodiment, the air intake pipe 19 provided in the water tank 18 is also used as a water supply port, but a water supply port may be provided separately.

(3) Water tank 18 side of water pipe 20, injection nozzle 1
A water supply valve is provided on the 5 side or in the middle of the water pipe 20,
By closing the valve when water is being supplied to the water tank 18 and opening it during cleaning, the injection nozzle 15 is
Water leakage can be prevented.

Also, the water supply valve may be operated manually, but this valve may be a spool valve whose operation source is cleaning compressed gas.
If air is supplied from the valve operating pipe connected to the operating rod 13 or the mounting pipe 16, when the valve 17 is opened, the pressure inside the operating rod 13 will increase, and this pressure will operate the spool valve and supply water to the injection nozzle 15. It becomes more preferable.

(4) Although the spray nozzle 15 only sprays cleaning water in one direction, if a spray port or another spray nozzle is installed in the opposite direction, it is possible to simultaneously clean the top and bottom surfaces of the insulator to be cleaned. It becomes more preferable.

(5) The length of the operating rod 13 is adjustable to accommodate various insulator lengths.

Effects of the Invention As detailed above, this invention provides a water tank between the operating section of the operating rod and the injection nozzle, so there is no water between the operating section and the water tank, and the operating rod Insulation is ensured, making it possible to perform live wire cleaning work safely, and the injection nozzle installed at the tip of the operating rod is installed eccentrically with respect to the axis of the operating rod via the mounting rod. without replacing it with another one,
By inserting the injection nozzle between the insulators and rotating the operating rod, the insulator surface can be easily cleaned from every corner, which has an excellent effect of improving work efficiency.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment embodying this invention, FIG. 2 is an enlarged front view showing an injection nozzle,
3 is an enlarged sectional view taken along the line A--A in FIG. 1, and FIG. 4 is a longitudinal sectional view showing the water tank. 11... Air supply hose, 13... Operation rod,
13a... operation unit, 15... injection nozzle, 16...
...Mounting pipe as a mounting rod, 18...Water tank, 20...Water pipe.

Claims (1)

[Scope of Claims] 1. An injection nozzle 15 is provided eccentrically with respect to the axis of the operating rod 13 via a mounting rod 16 at the tip of the operating rod 13 made of an insulating material, and the operating rod 13 is provided with a A water tank 18 is provided on the tip side of the portion 13a, and this water tank 18
and the injection nozzle 15 are communicated through a water pipe 20 provided along the mounting rod 16, and the injection nozzle 15 is connected to the injection nozzle 15 through a compressed gas supply pipe provided along the operating rod 13 and the mounting rod 16. An insulator cleaning machine characterized in that compressed gas is supplied from a compressed gas supply source. 2. The compressed gas supply conduit is composed of an operating rod 13 and a mounting rod 16, both of which are tubular in shape and whose hollow parts communicate with each other, and the injection nozzle 15 is connected to the tip of the mounting rod. ,
The insulator washer according to claim 1, wherein an air supply hose 11 is connected between the base end of the operating rod 13 and the compressed gas supply source. 3. The compressed gas supply path is composed of an air supply hose 11 arranged along the operating rod 13 and the attachment rod 16, and the hose 11 has its distal end connected to the injection nozzle 15 and its base end connected to the injection nozzle 15. 2. The insulator washer according to claim 1, wherein the insulator washer is connected to a compressed gas supply source.