JPS58195427A - Malfunction detector for gas insulated electric device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a gas loquat needle 1 equipped with a gas decomposition gas detection chamber.
This invention relates to an abnormality detection device for a safety device.

Electrical equipment such as transformers, switchgears, etc., which are housed in airtight containers with halogen-containing gas such as 8F gas sealed as an insulating medium, become abnormal, resulting in the occurrence of electrical When suddenly exposed to higher energy conditions, such as halogen-containing gases, they decompose and generate chemically active decomposition gases. Since this decomposed gas has the tendency to deteriorate the insulation and corrode metal, the abnormality of the equipment further progresses, causing the absolute range 11 to deteriorate to 44. However, if this phenomenon is utilized and the generation of decomposed gas is constantly monitored, abnormalities in equipment can be detected and accidents can be prevented.

This decomposition gas detection part can be roughly divided into gas insulation I inside the container.
II. A method of extracting the body to the outside and analyzing it, and inserting a detection substance into a gas insulating medium in a container, and detecting because this substance changes quality or changes color when it comes into contact with decomposed gas. There are two types of methods: a method in which the detection quality is taken out of the container and visually observed or determined, and a method in which the detection quality inside the container is visually observed or measured from outside the container.

To extract the gas-resistant body to the outside, simply attaching a pipe containing stop pulp to the container can easily extract it without requiring any special processing, but the inspection becomes intermittent and analysis is difficult. praise Also carelessly manipulate the pulp,
Disadvantages include the release of a large amount of gas insulating material, which can interfere with the operation of equipment, and the fact that some decomposed gases are toxic, making it dangerous for workers to inhale the decomposed gases. Of course - gas black! Enjoy the topography! 11#
The problem can be solved by attaching cJIR to gas analysis, but it has the disadvantage of being expensive.

Min → Substances that change color when exposed to gas 8 tani, i! If it is inserted into a gas-proof medium of IV3, the decomposed gas generated by Q[J[X will be blown away, so this i
The generation of decomposed gas can be detected by visually observing or measuring the discoloration or the state of stagnation. For example, if you insert the above-mentioned substance into a container and periodically open the container to release it, attach an integral substance that can be taken out at will while keeping the container airtight. There are two known methods of inserting this from the outside, pulling it out, and visually inspecting or measuring it, which can provide extremely accurate information. However, in general, in order to take things in and out of the container, it is necessary to discharge the gas insulating medium and stop the operation of the equipment, and the equipment becomes complicated if it is necessary to take things in and out while keeping the container airtight.

If the discolored substance is visually observed through the peep window 7J), there will be differences due to the staining of the B1 window.
It has the disadvantage of being.

A method in which a source is incident on a substance whose transmittance or reflectance changes when exposed to decomposition gas, and the change in the transmittance or reflection is emitted as a signal all at once.Furthermore, the material is altered by the decomposition gas between two electrodes, and has positive characteristics. A method is also known in which a substance that changes is used to compensate for changes in demon resistance, vI ratio, etc. The method of measuring changes in positive air characteristics is relatively simple, and continuous measurement and recording is possible as well as a method of extracting the original change in transmission and reflection as an electrical signal, but it is possible to measure and record changes in electrical characteristics in a gas medium. The accuracy of II has not necessarily been proven so far when a detection section configured with 'X is used for a long period of time. In addition, when inserting the detection unit into a container, there is a common drawback that extra space must be provided within the container, and furthermore, in a container that stores high-voltage equipment, there is a limit to where the detection unit can be placed. There is. Another disadvantage is that it is not possible to simply extend this detection section outside and inspect its quality.

The present invention has been made to overcome the above-mentioned drawbacks, and the decomposition gas detection part is housed in a detection amount attached to the outer wrinkle of the container of the air conditioner, and can be detected at all times while the equipment is operating. It is an object of the present invention to provide a gas-free acclimatization device in which the detection part can be easily taken out to the outside and in which detection parts for all kinds of traps can be installed.

This purpose is to attach it to the outer edge of an airtight container containing halogen-containing gas 1iiiF and enclosing halogen-containing gas 8.
A detection amount of decomposition gas that communicates with the inside of the valley l1iiF through a decomposition gas permeable membrane of u-halogen J gas and a decomposition gas detection unit for detecting decomposition gas that has diffused into this detection amount. stratified by

In addition, it is preferable that the decomposition gas through-knitting is made of fluororesin or polyindresin. Fuhonpo Bη is inferior to Touhakusha in comparison to polyind resin po, but its mechanical strength is inferior β), 8
It is preferable to select the energization depending on the pressure value of the gas to be sealed in the container. Also, the detected amount is 4 in Daikoku from Stop Pulp Banko.
It is best if the food is opened to the atmosphere in a Loe bag so that it can pass through.

I will now explain the main strong light dog Rihei in detail based on the drawings.

FIG. 1 shows the first implementation of the invention.

811 In Figure 3, 1 is a part of a container that houses electrical equipment (not shown), and SF-gas 2 of several atmospheres is sealed inside. Container 1 A decomposition gas permeable membrane made of a polymeric material sandwiched between support members 3 with numerous holes 3a in the kC-shaped plane opening 1M. A rectangular tube 5 with a diameter of 11i11 is dammed by a bolt 6, and one opening of the rectangular tube 5 is partitioned by a membrane 4 to define a detection amount. A substance 8 that changes color when it comes into contact with decomposed gas is inserted into the detection quantity 7, and the other opening of the square tube S is made of transparent material such as an acrylic plate or glass 8)゛6
It is exposed to gas and is closed with a lid 9. Also square tube 5
A pipe IO is attached to the ``stop pulp 11'', and it can be communicated with the atmosphere by opening and closing the stop pulp 11.1
2 is a para ``'' tyr36 that prevents gas leakage in the part with dust.
・ ,,.

The fluorine*m film 4 has a thick molecular weight of 8F・11:
1 It is difficult for the gas to pass through it, but it will pass through it over a long period of time, and the pressure between the constant measurement of 1 yen and the detected amount of 7 is ascitic.

Here, the moisture contained in the equipment with a container of 1 yen and the decomposed gas generated in the container of 1 yen easily permeate the fluororesin layer 4 due to its small molecular weight. Moreover, since the permeable shell can be made of a structure that is divided by people and people, the decomposed gas easily diffuses into the base of the building and becomes trapped in the color-changing material 8, causing it to change color. Therefore, if this discolored part 8 is visually observed through the part 9, the generation of decomposition gas can be detected at all times based on the discolored part. Further, it is also possible to open the pulp 11 and extract the detected amount of gas of 7, and intermittently detect the detected amount of decomposed gas of 7. At this time, the gas extracted from the pulp 11 is unloaded.
It is a violet only in M7, and even if it is released to the outside, the decomposed gas of this will give the human body a clot. Also, if we release the gas detected by M7 and lower the pressure in the □P1 corridor to human pressure! I was able to open the 98 and take out the discolored one.

If you use III 4#IT, you can also use ρh, 71, 瀘, etc. as 11.11. Even if you open -19 of the detection amount 7, the opening s1a1 of 4 devices
11 is separated by a fluorine tube, so Sv gas 2 with a large molecular weight passes through the detected amount 7i4 -<,'
The penetration of the short-time threshold circle can be ignored due to the amount of drilling. During these operations, there is no need to vent the 8F gas in the container 1, and it is not released, so the electrical equipment in the 1 yen container can be operated as usual. In addition, simply by attaching the li9 and closing the pulp 11, normality can be restored and abnormalities can be constantly detected by looking through the ike.

Figure 112 shows the $12 embodiment. jlG2 Figure 3 shows the frontage sl of the container l filled with INF gas 2 and the container 4
It is similar to the example of jll that the threshold with the detection [7] attached to the 6th ridge of 111 is separated by 7 bulky resin j14, but the footboard tree m4 is a support with many holes 3m. It is supported by being sandwiched between the material 3 and the bottomed rectangular tube S forming the detection N7 with a number of holes S formed therein. In the detection I17, a detection s that causes changes in electrical characteristics and optical characteristics when exposed to decomposition gas is inserted, and is stabilized by an external construction device. In this embodiment, a detector s13 for detecting decomposition gas based on a change in electrical characteristics is inserted, and its electrodes 140 at both ends are brought out to the outside by a bushing 1 passed through i19'. constant at The detected amount 7 can be delayed from the atmosphere by the pulp 11 of the pipe 1G, as in the ill embodiment. In this case, one support material that sandwiches the decomposed gas permeable membrane is integrated with the rectangular tube that forms the detection amount, so the risk of gas leakage is reduced, and the backing 12IIX (i- can be reduced). , the assembly becomes easy.2 Also, the * of the other opening does not need to be 211 bright.In this device, the change in the electrical characteristics of the detection part is detected during the operation of the +IA device, Or it can be defined intermittently, and the detection is shielded by a transparent AM support material, so it is not affected by the high voltage of the IdA device.Moreover, the amount of gas detected during operation is -4. It is also possible to handle * and detect it outside the tube.

FIG. 3 shows a third embodiment. In this embodiment, the fluorocarbon resin material 4 sandwiched between support members 3 with a large number of holes 3a is
It is attached by a bolt 6 so as to cover an opening 11 of a container l in which 8F-gas 2 is individually sealed. Detection 711
7 is formed of a square mesh 5 having a brim 5b on the opening door, and is attached to the 6 bells of the container with a diameter of 1M so as to cover the supporting material 3 holding the fluorine resin braid 4. This test fi
Various kinds of detection parts 13 similar to those in the embodiment of Tomi 2 are inserted into m7, and measurement can be continuously recorded or measured intermittently during operation of the device. Furthermore, it is also possible to remove the bottomed corner portion 5 and inspect the detection s13 while the device is in operation. Of course! It is also possible to install a pipe having a valve communicating with the atmosphere as shown in the first or second embodiment, so that the bottom of the rectangular tube can be opened as a lid.

As described above, the present invention detects decomposition gas using a decomposition gas permeable membrane that partitions the outer wall of a container housing gas-insulated electrical equipment with a decomposition gas permeable membrane that allows decomposition gas to easily permeate but does not allow the sealed gas to permeate. By doing so, we can discover abnormalities in electrical equipment,
・. This is a device that prevents accidents from occurring. With this device, no detection-related substance is inserted into the container, and it is not affected by restrictions on the insertion point or the 111i1L pressure.Moreover, there is no cracked gas in the detection chamber. Detection of decomposed gases is quick and easy because the decomposed gases are well diffused. Also, visual inspection and measurement to detect decomposed gases can be performed continuously or intermittently during one rotation of the equipment. , /)) One detection m is also 9 north and is an excellent A1 that can be freely opened and inspected inside while driving 4.

4. Anomaly 4X knowledge of gas-electricity bonds by Motoaki Motoaki
Figure 3 is a longitudinal plane view showing one implementation row of n, Figure 2 is a vertical jet view showing an implementation row of Figure 411i1, and Figure 3 is a further different implementation bII1.
It is a humble side view showing a row.

l...4 difference hot water storage valley 4s2...SF-gas, 4.
...7 A mercenary IJI's d, 7... @ Hearan, 9... Transparent amount of the detection part, 9'... Arrival of the detection part, 10... Large A
4 pipes, 11...stop pulp.

,/ ? Figure 1 ″′ir2 diagram

Claims (1)

[Scope of Claims] l) An electric machine a is installed in an outer machine of a closed container made of resin with a gas-containing insulating medium in which an electric machine a is housed, and created through decomposition gas permeation g of a primary halogen-containing gas. An abnormality detection device for gas-insulated electrical equipment, characterized by comprising a decomposed gas detector that escapes from inside a container, and a decomposed gas detector body that detects the decomposed gas that has diffused into the container. 2)Special IF'F# 1mm drop of 1st year blowout gas insulated electrical equipment abnormality detection device, decomposed gas permeation version is 7'
An abnormality detection device for gas insulated electrical equipment characterized by a@fat. 3) J of gas insulated electrical equipment in claim No. 1
% richness detection device, decomposed gas permeability 3mII & is an abnormality detection device for gas insulated electrical equipment based on the fact that it is polyimide resin. 4) Detector 111 detects an abnormality in the gas cut-off I11 electric grinder that has been placed on any of the 5th section or 3rd dust of the % permission request.
A gas 4e characterized in that it can be passed through to the atmosphere by a pipe with a stop pulp. Anomaly detection device for I-rim wax chamber. 5) Hour hand - axis An abnormality detection device for gas insulated electric machines that relies on being closed.