JPS58178270A - Apparatus for measuring contamination level of insulator ceramics - Google Patents

Abstract

PURPOSE:To measure the contamination level of insulator ceramics simply and quickly on job site by force-moisturizing an insulator to be measured with an artificial mist by means of a humidifier to indicate the contamination level of the surface thereof in terms of attachment value of equivalent salt. CONSTITUTION:An insulator 2 to be measured is housed in a capsule 1 and semi-cylindrical shell pieces 3 and 4 are closed so as to put an electrode 7 tightly thereon 2. A high frequency voltage is applied to an ultrasonic vibrator 10 of a humidifier 8 to atomize water and mist thus generated is injected into a capsule 1 through a blow-off port 9 with a fan 12 to moisturize the surface of the insulator 2 being measured amply. With the application of a fixed voltage between electrodes 7 and 7, current flowing is read out with a display section 13 to obtain the attachment value of equivalent salt.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a portable insulator contamination measuring device that can easily and quickly measure the degree of contamination of an insulator.

If contaminants adhere to and accumulate on the insulators used for the transmission line 1111 or the #L line, it will lead to a flashover accident in the worst case.

In addition, visible partial discharge, audible noise, even if it does not lead to flashover,
It can also cause interference with television and radio broadcasts. For this reason, in areas with heavy pollution, the level of pollution should be measured and managed regularly or when rapid pollution is expected, such as when a typhoon or strong sea winds howl, to ensure that the level of pollution remains below the 1-0 control standard. There must be. Conventionally, a widely used method for measuring the degree of contamination of insulators has been to wash the dirt on the insulator surface with water, such as the brush washing method, and then convert the equivalent salt adhesion density from the resistivity of the washed water. In this method, it was necessary to completely wash off the contaminants after each measurement, and it was not possible to remove accumulated contamination at any time.

Furthermore, the brush washing method takes a considerable amount of time for measurement and requires some skill in measurement. In addition, as a method to replace the brush washing method, we have developed a device that automatically cleans the insulator and measures the degree of contamination (t-meter), and an insulator surface @J that is artificially moistened with KIM and its leakage resistance and leakage current are continuously measured. Devices that measure the degree of contamination have also been proposed, but the former requires a large-sized device that limits the number of locations in which it can be used, and the latter, since the electrolyte of a conductive material depends greatly on its humidity conditions, It has been difficult to accurately measure the amount of contamination because it is easily affected by humidity and other weather conditions.

The present invention was completed with the aim of solving the above-mentioned drawbacks, using the same insulator as the actually used insulator, and providing an insulator contamination level measuring device that can be easily measured on site. The illustrated embodiment will be described in detail.

(1) What is the actually used insulator? A round-shaped insulator (2)
The capsule fi7 (1) has semi-cylindrical pieces (3) and (4) made of a highly airtight material such as 7゛ plastic. One side of the opening edge is connected so as to be openable and closable by a bottle shaft (5), and the other side is hermetically secured by a locking piece (6). In this case, it is preferable that each contact surface of the semi-cylindrical pieces (3) and (4) be coated with an elastic material such as rubber to improve adhesion. And this semi-cylindrical shell (3), (
4) Inside the box, conductive rubber is used as the electrode material 17),
(7) is preferably the upper electrode, the middle part is the pole and the lower part!
The electrodes (7) are provided as electrodes by pushing the appropriate electrodes (7) into electrical contact with the insulator (2) to be measured when the capsule (1) is closed, preferably in each half. Cylindrical pieces (3), (4) O from the base (7) fixed to the inner wall and the contact arm (7b) of the insulator to be measured (which has a shape on the inside that is almost the same as the phantom outer circumferential shape) Natteshi, Ko01
& portion (7a) and contact arm portion (7b) U Conductive rubber Camellia O Either integrally mold these with the same material, or as shown in Figure 2, these may be made of a relatively rigid material such as FfLP and then Conductive rubber (7C) may be fixed on the inner surface of the contact arm (7b), so that when the insulator to be measured (2 insulator) is housed within the required force of 1 to (1), the electrode surface becomes insulator. As long as it is a 1111 structure that makes electrical contact with the surface, there are no particular restrictions on its shape or material. (8) is a small humidifier such as an ultrasonic humidifier that is installed outside the power cell (1) by communicating the air outlet (9) into the power cell (1).
8), as shown in Fig. 3, the I
the fog generation chamber αυ generated in ll, and the ultrasonic transducer a
It consists of an oscillation circuit that supplies high FtaIN power to O, a fan (2) that sends S into the capsule (1), etc. - Fog is generated when the ultrasonic transducer installed in the generation chamber Qυ vibrates at high frequency. The water in the chamber Q], l is atomized, and the water in the chamber Q is atomized, and the water in the chamber Q is atomized, and the water is pumped through the air outlet (9) with a force of 17 l (1
). Note that the air outlet (9) attached to the adder (8) is connected to the measured insulator (
FMIN the entire table rkJ of 2) uniformly without excess or deficiency! In order to achieve this, it is preferable to provide at least two openings, one at the top and one at the bottom, and to arrange the openings at a certain angle slightly upward toward the back surface of the insulator's shade.

03 is a towing display section that is electrically connected to the capsule (1) and cable α11, and this display section (2) has a force of 1 c/u (1)
Upper, middle and lower III poles (7
), and a pointer or digital display that converts and displays the leakage current on the insulator surface flowing between the electrodes (7) into an equivalent amount of salt deposited. be. In addition, in the above embodiment, the humidifier (8) and the power unit # (1) are constructed as one unit, but the present invention is not limited to this, and for example, as shown in FIG. As shown, a humidifier (8) is provided on the display unit 04 side, and the capsule (1) and the humidifier (8)
(8) may be connected by a pipe αG. In this case, a mist outlet (9) is provided in the capsule (1) in advance, and the outlet D (+1) and the pipe α Connect the liD, too! : Tru. Further, the capsule (1) tD shape is not limited to a cylindrical shape, but may be any cylindrical shape as long as the insulator to be measured can be accommodated therein in an airtight manner.

The insulator to be measured (
2) is housed inside the cuff (t1), and when the semi-cylindrical pieces (3) and (4) are closed, the semi-cylindrical pieces (3),
Since the electrode (7) installed inside the insulator (4) is in close contact with the insulator to be measured (2k) and is electrically wired, in this state the ultrasonic transducer (2) of the humidifier (8) receives a high frequency signal. When a voltage is applied, the ultrasonic transducer (2) emits ultrasonic waves into the water, which turns the water into fine particles and scatters them into the air, creating fog.Then, this fog is generated by the fan (2). )
It is injected into the cuff cell (11) from the air outlet (9) on the airflow caused by the air flow, and the surface of the insulator to be measured (2) is moistened in just the right amount. A constant voltage was applied between the am poles (7) and (7), the current flowing between the electrodes (7) and (7) was measured, and this was converted to the equivalent salt adhesion amount on the display section (to). The equivalent salt deposition amount can be obtained by reading the pointer or digital display.The amount of fog generated can be self-controlled by adjusting the output of the built-in oscillation circuit.In this way, the present invention Since the insulator (2) is forcibly moistened with the humidifier (8) 1, which is an ultrasonic humidifier, inside the cuff (1) that can be opened and closed, each part of the insulator to be measured can be easily and precisely measured in a short time. It has the great advantage of being able to moisten the entire insulator surface to a uniform state without being affected by the external atmosphere such as flow rate or humidity.

Furthermore, measurements can be made on insulators that are normally used for actual lines without the need for special shaped insulators or specially processed insulators, and the electrodes (7) can be placed on the top, middle, and bottom Not only can the top and bottom sides of the insulator be measured simultaneously, but also the i! t Th (By adding 71, it becomes possible to measure the degree of contamination in smaller parts at the same time.Furthermore, the cover/I/(1) is 2.
(Since it is a two-part type that connects the semi-cylindrical pieces (3) and (4) of II, there is no need to remove the insulator from the reading room, etc., and it is lightweight and portable, so it can be removed from the site.) There is no need for the troublesome work of measuring and then reinstalling.
This method has the advantage of being able to easily measure the equivalent amount of lumber deposited at the on-site VC.

As is clear from the foregoing embodiments, the present invention utilizes a humidifier to generate artificial fog inside a movable force chamber which is provided with an electrode in close contact with the surface of the insulator to be measured. Since the degree of surface contamination of the insulator to be measured is converted into equivalent salt adhesion amount and density and displayed using the display unit connected to the electrode, the degree of contamination of the insulator can be easily and quickly measured on site. 4Ali! is a device that contributes greatly to the development of the industry by solving 11 problems of conventional insulator pollution level measuring instruments. ! IrkJ's simple elI2 clear ll51 figure is a partially cutaway perspective view showing an embodiment of the present invention, figure 1 is a partially cutaway plan view, and figure 3 is a partially cutaway front view of the humidifier section.
Figure 5 is a partially cutaway perspective view showing another embodiment.

(1) Two turnips, (3), (4) Two-handed cylindrical pieces, (7
): Electrode, (a) F humidifier, Q31 display section.

Figure 2

Claims (1)

[Claims] A semi-cylindrical piece (3) with an electrode (7) in close contact with the surface of the insulator to be measured (41f: a capsule (υ) and a skeleton cuff # (lID) connected to each other so that they can be opened and closed freely. A humidifier (3) that generates an artificial LL to force the insulator to be measured, and a humidifier (3) that is connected to the single pole (7) and converts the degree of surface contamination of the insulator to be measured into an equivalent salt adhesion amount and density. An insulator contamination degree measuring instrument characterized by comprising a display section for displaying an image.