JP2559892B2 - Equipment for measuring the amount of pollution on tower insulators - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a salt content attached to a suspension insulator, a long insulator, or the like,
The present invention relates to a pollution amount measuring device for an insulator on a tower, which can measure the amount of fouling substances including sulfides, sulfates, gypsum, or cement.

[Conventional technology]

Generally, in order to prevent a ground fault accident caused by insulation deterioration due to salt damage of a support insulator of a power transmission line, it is important to accurately grasp the contaminant attached to the insulator as an equivalent salt attachment density. As such a fouling amount measuring device, the insulator to be measured is washed in the washing tank storing water by utilizing the ultrasonic vibration action, and the conductivity of the fouled water after washing is measured with an electric conductivity meter, The resistance between the electrodes is measured while the surface is evenly moistened using a measuring device that calculates the salt adhesion density (contamination amount) of the insulator from the electrical conductivity and an insulator to be measured with multiple electrodes burned in advance. Then, there was a measuring device for obtaining the amount of pollution.

[Problems to be Solved by the Invention]

However, since the former ultrasonic cleaning device becomes large in size, it is extremely difficult to mount it on a steel tower.

In addition, since the surface to be cleaned must be immersed in cleaning water, it can be used to measure the amount of contamination of insulators that are not complicated in shape, such as long-distance insulators, but insulators with complicated surface shapes, such as suspended insulators. Further, when using the suspended insulator, there is a problem that it cannot be used to measure the amount of pollution of only the lower surface of the insulator.

On the other hand, the latter measuring device has a problem that it takes time to evenly wet the surface of the insulator, and the measurement accuracy is lowered because the surface resistance is converted into the amount of contamination.

In addition, as a conventional device for measuring the amount of pollution of suspended insulators, the contaminants adhering to the insulator surface are wiped off with water-impregnated cotton etc., and the contaminants are dissolved in a prescribed amount of water, and then the conductivity of the contaminant water is changed. There is also an apparatus that measures the degree of contamination and calculates the amount of contamination, but this has the problem that the amount of contamination measurement work is extremely troublesome and takes a long time.

The object of the present invention is to be able to quickly and accurately measure the amount of fouling of insulators with a simple structure, and to reduce the size and weight of the measuring device part mounted on the steel tower, and to reinforce the steel tower for power transmission. It is an object of the present invention to provide a pollution amount measuring device for an insulator on a tower capable of reducing the amount of pollution.

[Means for solving the problem]

In order to achieve the above object, the present invention corresponds to a cleaning water supply source disposed on the ground, a measured insulator mounted at a predetermined height position from the ground with respect to a steel tower, and the measured insulator. Mounted on a steel tower and connected to the cleaning water supply source through a long pipe, an insulator cleaning tank for cleaning the surface of the insulator to be measured with cleaning water sprayed from a spray nozzle, and the insulator. A measuring tank connected to the cleaning tank via a long pipe and arranged on the above-ground part for storing the cleaning water, and an electric conductivity of the cleaning water arranged in the measuring tank. It is composed of an electric conductivity meter for measurement and an arithmetic control unit connected to the electric conductivity meter and adapted to calculate the salt attachment density of the insulator based on the measurement data from the electric conductivity meter.

The insulator to be measured is movable up and down with respect to the insulator cleaning tank, the insulator cleaning tank is divided into a plurality of parts, and the insulator is separated from the insulator to be measured, and the insulator is separated laterally. And a state in which the insulator to be measured is housed inside and combined with each other, the separated and combined state can be changed.

The upper inner peripheral surface of the insulator cleaning tank may be in contact with the outer peripheral edge of the suspended insulator as the insulator to be measured.

[Work]

This invention, when measuring the pollution amount of the insulator to be measured,
The divided cleaning tank at the non-measurement position is separated, the insulator to be measured is moved between the divided cleaning tanks, and then the divided cleaning tank is moved toward the measured insulator and united. In this state, the cleaning water from the cleaning water tank installed on the ground is guided to the injection nozzle in the cleaning tank through the pipe line, is sprayed from the nozzle to the surface of the insulator to be measured, and the contaminants on the surface are cleaned. To be done.
This cleaning water is transferred to a measuring tank via a pipe, and the conductivity of the dirty water after cleaning is measured by the conductivity meter in the tank. Further, the calculation control means calculates the salt attachment density of the insulator based on the measured electric conductivity.

According to the present invention, a washing water tank and a measuring tank are arranged on the ground, an insulator washing tank is installed in a power transmission tower, and the both tanks and the washing tank are connected via a long pipe line. Therefore, the device portion mounted on the steel tower can be made smaller and lighter. Therefore, when the measuring device is mounted on the steel tower, the reinforcing material of the steel tower can be reduced and the mounting work can be easily performed.

Also, when the inner peripheral surface of the upper part of the divided cleaning tank can be contacted with the outer peripheral edge of the suspension insulator, the cleaning water is sprayed from the spray nozzle to the back surface of the suspension insulator to remove the contaminants attached to the back surface of the suspension insulator. Efficient cleaning is possible with a simple structure.

〔Example〕

Hereinafter, the pollution amount measuring device of the present invention will be described with reference to the drawings.

As shown in FIG. 1, an insulator cleaning tank 3 is connected to a cleaning water tank 1 through a long water supply conduit 2, and a water supply pump 4 and a normally closed type are provided in the middle of the water supply conduit 2. Solenoid valve SV1 of is connected. Further, the pump 4 is connected to first and second bypass pipe lines 5 and 6, the first bypass pipe line 5 is connected to a manual valve V, and the second bypass pipe line 6 is a normally open type. Solenoid valve SV2 is connected. When the pump 4 is started with the solenoid valve SV1 closed and the solenoid valve SV2 opened, the wash water in the wash water tank 1 is pumped by the pump 4 from the water supply pipe line 2 to the second bypass pipe line 6 and the solenoid valve. Wash water is returned to the tank 1 through the SV2. At this time, by adjusting the opening amount of the manual valve V, the water pressure of the wash water is adjusted while the pump 4 is rotating at a constant speed, and the pump 4 is kept open for a predetermined time (predetermined rotation speed) with the solenoid valve SV1 open. ) The amount of wash water supplied when rotating is adjusted.

In the cleaning tank 3, spraying nozzles 7 for spraying cleaning water of a predetermined pressure onto the back surface of a suspended insulator 27 to be measured to clean contaminants on the insulator surface (back surface of the cap portion) are arranged at appropriate positions. ing.

A measuring tank 9 is connected to the cleaning tank 3 via a long pipe 8. An electric conductivity meter 10 is provided in the measuring tank 9 so that the electric conductivity specific to the cleaning water stored in the tank 9 or the electric conductivity of the dirty water after the insulator cleaning can be measured. Further, a stirring blade 11 for stirring the washing water is housed in the measuring tank 9, and the blade 11
Is attached to the rotary shaft 13 of the motor 12. Further, a drainage pipe 14 is connected to the lower surface of the measuring tank 9,
A solenoid valve SV3 for drainage is connected in the middle of 14.

The conductivity meter 10 is connected to the arithmetic and control unit 16 via a lead wire 15. As shown in FIG. 3, the arithmetic and control unit 16 comprises a control unit 17 and an arithmetic unit 18, and the control unit 17
Is the pump 4, the solenoid valves SV1 to SV3, and the motor 1 for the stirring blade 11.
2. The operation signal is output to the lifting mechanism 24 of the insulator 27 to be measured. Further, the calculation unit 18 subtracts the conductivity specific to the wash water from the conductivity output from the conductivity meter 10,
The salt attachment density of the insulator is calculated based on the subtracted conductivity, and other calculation operations are performed.

Next, an application example of the above-described insulator fouling amount measuring device will be described with reference to FIG.

A supporting arm 23 is cantilevered on the steel tower 21, and the cleaning tank 3 and an insulator lifting mechanism 24 are mounted on the supporting arm 23, and a lower end portion of a supporting rod 25 of the lifting mechanism 24 has a pair of measured insulators.
26, 27 and one dummy insulator 28 are integrally supported so as to be able to move up and down. The dummy insulator 28 is normally installed in a state where the outer periphery of the dummy insulator 28 is in contact with the upper inner peripheral surface of the cleaning tank 3. Further, of the insulators 26 and 27 to be measured, for example, the insulator 2 to be measured.
When measuring the amount of contamination of 7, the support rod 25 is lowered in a state where the cleaning tank 3 is divided into two, and the insulator 27 to be measured causes the cleaning tank 3 to be separated.
After being lowered to the measurement position of 1, the cleaning tank 3 is united again and the outer peripheral edge of the insulator 27 to be measured is sealed, and the injection nozzle 7
The cleaning water is sprayed on the back surface of the insulator 27 to be measured to clean the contaminants.

Further, the control unit 17 sprays cleaning water from the spray nozzle 7 while the outer peripheral edge of the dummy insulator 28 is in contact with the inner peripheral edge of the cleaning tank 3 and the rear surface of the dummy insulator 28, the cleaning tank 3, and the pipe line 2. ,
8. It also has a function of outputting a cleaning / cleaning signal for cleaning the inner surfaces of the measuring tank 9 and the like with cleaning water.

Next, the operation of measuring the amount of pollution by the insulator pollution amount measuring device configured as described above will be described.

When the dummy insulator 28 closes the cleaning tank 3 as shown in FIGS. 1 and 2, and a measurement start signal is input to the controller 17 from a switch (not shown) or the like, the water supply pump 4 is started,
The solenoid valve SV3 is opened, the residual water in the measuring tank 9 is discharged, and the solenoid valve SV3 is closed.

Next, the electrode valve SV1 is opened and the solenoid valve SV2 is closed, and the cleaning water in the cleaning water tank 1 is supplied by the pump 4 into the cleaning tank 3 through the water supply conduit 2 and the dummy insulator.
The back surface of 28 and the inner peripheral surface of the cleaning tank 3 are cleaned and supplied to the measurement tank 9 through the pipe line 8.
The insides of the pipelines 2 and 8 and the measuring tank 9 are cleaned.

Then, the solenoid valve SV1 is closed, the solenoid valve SV2 is opened, the motor 12 is energized, and the stirring blade 11 is rotated. As a result, the cleaning water in the measuring tank 9 is agitated in the tank, so that the inside of the tank 9 is efficiently cleaned.

Next, the solenoid valve SV3 is opened, the cleaning water in the measuring tank 9 is discharged, the solenoid valves SV2 and SV3 are closed, and the solenoid valve SV1 is opened, so that a predetermined amount of cleaning water is pumped by the pump 4. 3 is supplied. This cleaning water is stored in the measuring tank 9 from the cleaning tank 3 through the pipe line 8.

Next, the solenoid valve SV1 is closed and SV2 is opened, and then the stirring blade 11 is rotated, the stored cleaning water is stirred in the measurement tank 9, and the conductivity meter 10 causes the specific conductivity R1 of the cleaning water to rise. Is measured.

Next, after the cleaning tank 3 is separated into two, the insulator raising / lowering mechanism 24 is operated to move the insulator 27 to be measured into the cleaning tank 3, the cleaning tank 3 is united, and the cleaning tank 3 is covered. Measuring insulator
It is closely attached to the outer peripheral edge of 27. Then, the solenoid valve SV3 is opened and the cleaning water in the measuring tank 9 is discharged. And
The solenoid valves SV2 and SV3 are closed, the solenoid valve SV1 is opened, and the back surface of the insulator 27 to be measured is washed with a predetermined amount of washing water. Further, the solenoid valve SV1 is closed, SV2 is opened, the stirring blade 11 is rotated, and the wash water in the measurement tank 9 is stirred. After that, the conductivity meter 10 measures the conductivity R2 of the dirty water after cleaning.

Next, after subtracting the specific conductivity R1 of the wash water from the conductivity R2 by the calculation unit 18, the calculation unit based on the subtraction result.
The salt adhesion density (contamination amount) is calculated by 18, the pump 4 is finally stopped, the insulator 27 to be measured is moved to the exposure position, the dummy insulator 28 closes the opening of the cleaning tank 3, and the initial state is obtained. Return to.

Now, in the above-mentioned embodiment, the washing tank 3, the washing water tank 1, the pump 4 and the measuring tank 9 arranged on the ground.
Are connected by long pipes 2 and 8 respectively, and the tower 21
The cleaning tank 3, the insulator lifting mechanism 24, and the insulators 26 and 27 to be measured are on the upper side.
By installing the device, the device part to be installed on the steel tower 21 is reduced in size and weight, and when installing the device part,
The reinforcing material of the steel tower 21 can be eliminated or reduced, and the mounting work can be easily performed.

Further, in the above-mentioned embodiment, since the inner peripheral surface of the divided cleaning tank 3 is brought into close contact with the outer peripheral edge of the suspended insulator type measured insulator 27, the cleaning water is sprayed from the spray nozzle 27 to the rear surface of the insulator 27 to spray the cover portion. Contaminants adhering to the back surface can be efficiently washed with a simple structure. In addition, since the surface of the cap portion of the insulator usually has a rain-washing action, it is highly necessary to measure the amount of stain on the back surface of the cap portion.

Further, in the above-mentioned embodiment, the cleaning / cleaning means for cleaning the cleaning tank 3, the pipe 8 and the measuring tank 9 with the cleaning water is provided prior to the measurement of the contamination amount of the insulator 27 to be measured. The accuracy of measuring the amount of pollution can be improved.

The present invention is not limited to the above embodiment, and for example, by mounting a lid (not shown) that automatically opens and closes the upper opening of the cleaning tank 3, the lid is closed during the cleaning and cleaning process, When measuring the amount of contamination of the measured insulator 27, the lid can be opened to put the measured insulator in the cleaning tank 3. Further, in the above-mentioned embodiment, the insulator 26,2 to be measured is
Two 7 are used, but one or three or more may be used.

〔The invention's effect〕

As described above in detail, the present invention has an effect that, when a small and lightweight insulator cleaning tank is mounted on a steel tower, a reinforcing material for the steel tower can be eliminated or reduced and the mounting work can be easily performed. In addition, since it uses a method of cleaning contaminants with cleaning water, it is possible to quickly perform the measurement work of complex insulators with a shape like a suspended insulator, and use the conductivity meter to measure the conductivity of the contaminants. Since the measurement is performed in this manner, the accuracy of measuring the amount of pollution can also be improved.

Also, when the inner peripheral surface of the upper part of the divided cleaning tank can be contacted with the outer peripheral edge of the suspension insulator, the cleaning water is sprayed from the spray nozzle to the back surface of the suspension insulator to remove the contaminants attached to the back surface of the suspension insulator. Efficient cleaning is possible with a simple structure.

[Brief description of drawings]

FIG. 1 is a front view showing an entire insulator fouling amount measuring device embodying the present invention, FIG. 2 is a schematic front view showing an application example of the fouling amount measuring device, and FIG. 3 is a block control of the fouling amount measuring device. It is a circuit diagram. 1 ... Wash water tank, 2 ... Water supply line, 3 ... Wash tank, 4 ... Water supply pump, 7 ... Injection nozzle, 8 ... Pipe line, 9 ... Measuring tank, 10 ... Conductivity Proximity meter, 16 ... Arithmetic control device, 17 ... Control unit with a function to output a cleaning / cleaning signal, 18 ... Arithmetic unit, 21 ... Tower, 23 ... Support arm, 24 ... Insulator lifting mechanism, 26,27 …… Insulator to be measured.

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Hiroshi Ota 1-3-3 Uchisaiwaicho, Chiyoda-ku, Tokyo Within Tokyo Electric Power Company (72) Inventor Takayoshi Guri 5 of 228 Nishitomita-cho, Yokkaichi-shi, Mie (72 ) Inventor Toshiaki Suzuki 5-15-15, Uechi, Okazaki-shi, Aichi Prefecture (72) Inventor Toru Ando 47-47 Nishidaine, Sakae-cho, Toyoake-shi, Aichi Reference (JP-A-1-92651 (JP, A)) Japanese Unexamined Patent Publication No. 2-177221 (JP, A) Actual No. 1-99055 (JP, U)

Claims (2)

(57) [Claims] 1. A washing water supply source disposed on the ground, a measured insulator mounted at a predetermined height position from the ground with respect to the steel tower, and a measured water insulator mounted on the steel tower corresponding to the insulator. And an insulator cleaning tank for cleaning the surface of the insulator to be measured with cleaning water sprayed from a spray nozzle, which is connected to the cleaning water supply source through a long pipe, and is long with respect to the insulator cleaning tank. Measurement tank connected to the above-mentioned pipe line for storing the cleaning water, and an electric conductivity for measuring the electric conductivity of the cleaning water arranged in the measurement tank. Meter, and an arithmetic control unit that is connected to the conductivity meter and calculates the salt attachment density of the insulator based on the measurement data from the conductivity meter, and the measured insulator is the insulator cleaning tank. It is possible to move up and down with respect to the insulator cleaning tank. It is possible to change the separation / coalescence state between the state in which the measured insulator is separated and united, the side is separated and separated, and the measured insulator is housed inside and combined. An apparatus for measuring the amount of pollution of an insulator on a tower, which is configured. 2. The contamination measuring device for an insulator on a tower according to claim 1, wherein an upper inner peripheral surface of the insulator cleaning tank is brought into contact with an outer peripheral edge of a suspended insulator as an insulator to be measured.