KR870001744B1 - Sealant - Google Patents

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KR870001744B1
KR870001744B1 KR1019850002043A KR850002043A KR870001744B1 KR 870001744 B1 KR870001744 B1 KR 870001744B1 KR 1019850002043 A KR1019850002043 A KR 1019850002043A KR 850002043 A KR850002043 A KR 850002043A KR 870001744 B1 KR870001744 B1 KR 870001744B1
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South Korea
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liquid
parts
transformer
sealing agent
oil
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KR1019850002043A
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Korean (ko)
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KR860007350A (en
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김민찬
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김민찬
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00Materials not provided for elsewhere
    • C09K3/12Materials for stopping leaks, e.g. in radiators, in tanks
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00Materials not provided for elsewhere
    • C09K3/10Materials in mouldable or extrudable form for sealing or packing joints or covers

Abstract

The sealing material for maintaining the transformer is mixed of A liquid and B liquid. The A liquid composed of a liquid phase epoxy resin of 40-70 parts, and an in-organic filler of 30-50 parts has a viscosity of 300,000-1,000,000 cps.. The B liquid composed of a liquid phase polysulphide rubber of 40-60 parts, a second or third grade amine of 3-10 parts and an in-organic filler of 30-50 parts has a viscosity of 300,000-1,000,000 cps..

Description

변압기 보수용 시일링제Sealing agent for transformer repair

첨부도면은 변압기의 개략적인 정면도임.The accompanying drawings are schematic front views of the transformer.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 본체 2 : 덮개1: body 2: cover

3 : 콘서베이터 4 : 부싱3: conservator 4: bushing

5 : 패킹5: packing

본 발명은 변압기의 누유를 보수하는 시일링제 특히, 액상의 에폭시와 폴리설파이드 고무를 주성분으로 하는 페이스트상의 시일링제로서 변압기의 누유부분에 도포하여 누유를 방지하는 시일링제에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing agent for repairing oil leakage of a transformer, in particular, a paste-like sealing agent mainly composed of liquid epoxy and polysulfide rubber, which is applied to the oil leakage portion of a transformer to prevent leakage.

변압기는 대략 첨부도면에서 보는 바와 같이 본체(1), 덮개(2), 콘서베이터(3), 부싱(4) 및 도시되지는 않았으나 방열기등으로 구성되어 본체(1)에는 말할 것도 없이 자심이나 코일이 장착되어 있고 이것에 절연유가 충전되어 있다. 그러므로 본체(1)와 덮개(2)와의 사이 및 덮개(2)와 콘서베이터(3) 또는 부싱(4)과의 접속부분에는 패킹(5)이 삽입되어 있어 기내의 절연유가 누출되지 않도록 엄중하게 밀폐되어 있는 것이다.The transformer is composed of a main body 1, a cover 2, a conservator 3, a bushing 4, and a radiator, but not shown, as shown in the accompanying drawings. Is mounted and filled with insulating oil. Therefore, a packing (5) is inserted between the main body (1) and the cover (2) and between the cover (2) and the conservator (3) or bushing (4), so that the insulating oil in the cabin is not strictly leaked. It is sealed.

한편, 종래부터 사용되고 있는 패킹은 니트릴고무를 주성분으로 한 것으로 통상은 니트릴고무의 가황물 또는 니트릴고무에 콜크를 혼합하여 가황한 것이 사용되고 있다. 그러나 니트릴고무는 내유성이나 내진성의 점에서는 일단은 만족할 수 있는 것이지만 내고온성이 낮기 때문에 변압기의 발열조건에 맞지않아 노화되어 누유현상을 일으키게 된다. 물론 이 경우는 노화된 패킹을 새것으로 교환하면 좋기는 하나 예를들면 정격용량 3600KVA, 정격전압 330V정도의 대형 변압기는 중량이 수십톤까지도 나가므로 덮개(2)를 들어올리는 작업이 매우 곤란하여 볼트의 교환이나 들어올리는 작업에 많은 공사기간과 비용을 요하게 된다. 더구나 변압기가 옥내에 설치되어 있는 경우에는 덮개(2)가 천정에 걸리기 때문에 이것을 들어올리는 것 자체도 불가능한 경우가 많다. 그러므로 변압기에서는 누유부분에 시일링제를 도포하여 이것을 보수하는 것이 불가피하다.On the other hand, the packing conventionally used has nitrile rubber as a main component, and the vulcanized substance of nitrile rubber or the thing which vulcanized by mixing cork to nitrile rubber is used. However, nitrile rubber is satisfactory at the point of oil resistance or seismic resistance, but because of its low temperature resistance, it does not meet the heating conditions of the transformer and causes oil leakage. Of course, in this case, it is good to replace the old packing with a new one. For example, a large transformer with a rated capacity of 3600 KVA and a rated voltage of 330 V can weigh up to several tens of tons, so lifting the cover 2 is very difficult. It takes a lot of construction time and expense for the exchange and lifting work. In addition, when the transformer is installed indoors, since the cover 2 is suspended from the ceiling, it is often impossible to lift it. Therefore, in the transformer, it is inevitable to apply a sealing agent to the oil leakage to repair it.

이와같은 점에서 종래에는 탈옥심타잎의 실리콘수지를 주성분으로 하는 시일링제나 아민 또는 폴리아마이드 경화타잎의 에폭시수지를 주성분으로 하는 시일링제를 사용하여 누유부분에 도포하는 방법이 검토되었다. 그러나 전자는 공기와 접촉되지 않으면 경화가 되지 않으므로 겹쳐바르기가 불가능하고, 한편 후자는 경질로서 가요성이 없기 때문에 통전중에는 항시 진동을 하고 있게되는 변압기에서는 두껍게 도포하면 균열이 발생하게 되어 어느 것도 누유부분에다 이것을 두껍고 도포할 수가 없으므로 완전한 시일링효과를 얻기가 불가능하였다.In this regard, conventionally, a method of applying to a leaky oil portion using a sealing agent mainly composed of a silicone resin of a oxime core or an epoxy resin of an amine or polyamide cured core is used. However, the former is not cured if it is not in contact with air, so it cannot be overlaid. On the other hand, since the latter is hard and flexible, cracks occur when a thick coating is applied in a transformer that is always vibrating during energization. In addition, it was impossible to obtain a full sealing effect because it was thick and not applicable.

본 발명은 전술한 종래의 결점을 개량한 것으로서 액상의 폴리설파이드 고무와 에폭시를 주성분으로 하여 누유부분에 대해 접착력이 강하고, 내유, 고온성이 우수하며, 더욱이 가요성이 있어서 진동에 의해서는 균열이 생기지 않는 시일링제를 제공하고져 하는 것이다.The present invention is an improvement of the above-mentioned drawbacks, which are mainly composed of liquid polysulfide rubber and epoxy, and have strong adhesion to oil leakage parts, excellent oil resistance and high temperature resistance, and also have flexibility to crack due to vibration. It is supposed to provide a sealing agent that does not occur.

이하 본 발명을 구체적으로 설명한다.Hereinafter, the present invention will be described in detail.

본 발명에 의한 시일링제는 2액성으로서, 액상의 에폭시를 주성분으로 하는 A액과 폴리설파이드 고무를 주성분으로 하고 에폭시의 경화제를 함유하는 B액으로 되어 있다.The sealing agent according to the present invention is two-component, and is a liquid B containing liquid epoxy as a main component and a polysulfide rubber as a main component, and a liquid B containing epoxy curing agent.

A액은 에폭시수지 40-70%, 경질탄산칼슘, 산화티탄등의 무기질 충전제 30-50%로 구성되고, 필요에 따라 규산알루미네이트를 3%미만 첨가할 수도 있다.Solution A is composed of 40 to 70% of epoxy resin, 30 to 50% of inorganic fillers such as hard calcium carbonate and titanium oxide, and less than 3% of silicate aluminate may be added if necessary.

A액의 주성분인 에폭시는 분자구조에 대해서는 특별히 한정되지는 않지만 모노마의 상태에서 액상이거나 혹은 소량의 유기용제에 용해하여 유동성을 가지는 것이 필요하고, 또 시일링제가 경화한후에 가요성을 가지는 것이 바람직하므로, 예컨대, 비스페놀 A타잎 에폭시와 같은 비교적 길다란 분자의 것이 적당하다. B액은 액상설파이드 고무 40-60% 상온경화성 2급 또는 3급 아민경화제 3-10%, 무기질 충전제 30-50%로 조성되고 필요에 따라 3%미만의 규산알루미네이트가 첨가될 수 있다. 또 B액의 주성분인 폴리설파이드 고무는 액상으로서 적당한 유동성을 갖는 것이며, 한편 경화제는 변압기가 옥외에 설치되어 있는 점을 고려하여 에틸렌디아민 같은 2급 아민이나 트리에틸렌 트리아민 같은 3급 아민들의 상온 경화타잎의 경화제를 사용하는 것이 적당하다. 무기질 충전제로는 탄산칼슘, 산화티탄등이 사용된다. 그리고 이것들에는 사용조건이나 도포조건에 따라 무기질 충전제나 가요성 부여제등을 첨가하는 것이다.Epoxy, which is the main component of liquid A, is not particularly limited in terms of molecular structure, but it is necessary to have a fluidity in the form of a monomer or dissolved in a small amount of organic solvent, and it is preferable to have flexibility after the sealing agent is cured. For example, relatively long molecules such as bisphenol A type epoxy are suitable. Liquid B is composed of liquid sulfide rubber 40-60% room temperature curable secondary or tertiary amine hardener 3-10%, inorganic filler 30-50%, and less than 3% silicate aluminate may be added if necessary. In addition, polysulfide rubber, the main component of liquid B, has liquidity as a liquid, while the curing agent is a room temperature curing agent of secondary amines such as ethylenediamine or tertiary amines such as triethylene triamine, considering that the transformer is installed outdoors. It is suitable to use hardeners of other types. Calcium carbonate, titanium oxide, etc. are used as an inorganic filler. In addition, an inorganic filler, a flexible imparting agent, etc. are added to these according to a use condition and application conditions.

계속하여 본 발명의 실시예에 대하여 설명한다.Subsequently, an embodiment of the present invention will be described.

배합예 ① (수직면에서도 흘러나오지 않는 배합예)Mixing example ① (mixing example which does not flow even in the vertical plane)

Figure kpo00001
Figure kpo00001

배합예 ② (흘러들어가기에 적당한 유동성을 갖는 배합예)Formulation Example ② (Formulation Example With Flowability Suitable for Flowing In)

Figure kpo00002
Figure kpo00002

상기 각액은 어느 것도 액상 에폭시, 액상 폴리설파이드 고무에 다른 첨가제를 양이 많은 것부터 차례로 가하여 니이더로 혼합하고 다음에 도료용 3개의 로울러에 2회 통과시켰다. 첨가제를 가하는 순서에 대해서는 특별히 한정되는 것은 아니나 양이 가장 적은 것을 마지막에 가하는 것은 이것을 전체에 걸쳐 균일하게 분산시키기 용이하게 하기 위한 것이다.All of the above liquids were added to the liquid epoxy and the liquid polysulfide rubber in order from a large amount of additives, mixed with a kneader, and then passed through three rollers for paint. The order in which the additives are added is not particularly limited, but the one with the smallest amount is added to make it easy to disperse it uniformly throughout.

제1표에 상기 각 배합액의 일반성상을 나타낸다. 제2표에 시일링제의 인장전단강도를 나타내고, 제3표에 180도 박리강도를 나타낸다.The general property of each said compound liquid is shown to a 1st table | surface. The tensile shear strength of the sealing agent is shown in Table 2, and the peel strength is 180 degrees in Table 3.

표중 「블랭크」는 접착압 0Kg/Cm2로 연강판에 접착시킨 것이고 「오일」은 연강판에 절연유를 도포한 후 접착시킨 것이며 「실리콘 시일랜트」는 탈옥심 타잎의 실리콘 시일링제를 사용한 것이다.In the table, "blank" is bonded to a mild steel sheet with an adhesive pressure of 0 Kg / Cm 2 , and "oil" is bonded after applying insulating oil to a mild steel sheet.

[제1표][Table 1]

배합액의 일반성상General Properties of Formulations

Figure kpo00003
Figure kpo00003

[제2표][Table 2]

인장전단강도(Kg/Cm2)Tensile Shear Strength (Kg / Cm 2 )

Figure kpo00004
Figure kpo00004

[제3표][Table 3]

180도 박리강도180 degree peeling strength

Figure kpo00005
Figure kpo00005

다음에 이와 같이 제조한 시일링제에 의한 시공예를 기술한다.Next, the construction example by the sealing agent manufactured in this way is described.

[시공예 1][Application Example 1]

1970년에 제조된 옥내용 대형 변압기이었는바, 단자판 어댑터로부터 누유가 시작되어서 단자 및 어댑터 부분에 나무틀을 붙이고 탈옥심 타잎 실리콘을 전체적으로 흘려 넣어 누유를 방지하였으나 1주일후 다시 누유가 시작되었다. 시공이 잘못되거나 공사기간의 일수, 순서등에서 작업성이 맞지 않은 공사였던 것이 제1요인이었다. 본 발명의 배합예 2예 나타낸 시일링제를 단자판과 본체 플렌지의 사이에 주입하므로서 누유가 멈추었다. 또, 어댑터에 대해서로 베이크판에 도포단자판을 부착시켰더니 누유가 멈추었다. 하룻밤의 방치로서 완전한 시공이 되고 적은 재료로서 확실한 시공이 되며, 시공면이 깨끗하여 소기의 목적이 빨리 달성된 예이다.It was a large indoor transformer manufactured in 1970. Oil leakage started from the terminal plate adapter, and wooden leaks were attached to the terminals and adapters to prevent leakage by leaking the jailbreak core type silicon as a whole. The first factor was that the construction was wrong or the work was not suitable in terms of the number of days and the order of the construction period. Oil leakage was stopped by injecting the sealing agent shown in the two examples of the compounding examples of the present invention between the terminal plate and the main body flange. Moreover, when the application terminal board was affixed to the baking plate with respect to the adapter, the oil leakage stopped. It is an example where the intended purpose was quickly achieved because the construction surface was clean as the construction was completed as a night and left as a complete construction.

[시공예 2][Construction Example 2]

옥내용 대형 변압기로서 역시 단자판과 본체 플렌지로부터 누유되고 있었는바, 이것은 변압기 메이커가 탈옥심 타잎의 실리콘 시일링을 하여 어느정도 확실한 시공방법이 실시되었으나 역시 1년 정도에 다시 누유가 생겼다. 실리콘은 덧바르기가 불가능하므로 본 발명의 배합예 1에 나타낸 시일링제를 누유부분에 도포하였다.Large indoor transformers were also leaking from the terminal plate and main body flanges, which were applied to the transformer makers with silicon sealing of jailbreak cores, and some firm construction methods were carried out. Since silicone is impossible to apply, the sealing agent shown in the compounding example 1 of this invention was apply | coated to the oil leakage part.

[시공예 3][Construction Example 3]

역시 옥내용 변압기의 예이나 단자판의 주위에 베이크판으로 틀을 만들고 배합예 2에 나타낸 시일링제를 흘려넣었더니 단자판과 본체 플렌지 및 단자판과 어댑터 사이에서의 누유는 멈추게 되었다.Also, an example of an indoor transformer or a mold was made of a baking plate around the terminal plate, and the sealing agent shown in the compounding example 2 was poured in. The leakage between the terminal plate, the main body flange, the terminal plate, and the adapter stopped.

또 한편, 본 발명에 의하면 누유부분을 떼어낸 후 그곳에 톨루엔디이소시아네이트를 도포하고 다시 이것에 배합예 1에 나타낸 B액을 주걱으로 발라 넣어 톨루엔디이소시아네이트를 경화시키므로서 신속히 누유를 차단하고 다음에 과잉의 A액을 빼낸후 다시 이것을 시일링제를 도포하는 방법도 있다. 이 방법에 의하면 톨루엔디이소시아네이트가 즉시 경화하기 때문에 장치의 운전을 정지시키고 기름을 빼내지 않고서도 시공을 할 수 있는 잇점이 있다.On the other hand, according to the present invention, after removing the oil leakage part, toluene diisocyanate is applied thereon, and the liquid B shown in the compounding example 1 is applied to it again with a spatula to harden toluene diisocyanate to harden the oil leakage, and then excess Another solution is to remove the liquid A and apply the sealing agent again. According to this method, since toluene diisocyanate hardens immediately, there is an advantage that the construction can be performed without stopping the operation of the apparatus and extracting oil.

이상을 상술한 바와 같이 본 발명은 페이스트상의 에폭시 배합액과 페이스트상의 폴리설파이드 고무배합액을 혼합하는 것이다.As mentioned above, this invention mixes paste-type epoxy compounding liquid and paste-form polysulfide rubber compounding liquid.

혼합율은 에폭시수지와 폴리설파이드 고무의 특성을 가지고 있어서 접착력이 강하고 내유, 내고온성이 우수하며, 더구나 가요성이 있어서 진동에 의하여서는 균열이 생기지 않으므로 엔진이나 변압기의 시일링제로서 적합한 것이다.The mixing ratio has the properties of epoxy resin and polysulfide rubber, so it has strong adhesive strength, excellent oil resistance and high temperature resistance, and furthermore, it is suitable as a sealing agent of an engine or a transformer since it does not crack due to vibration due to its flexibility.

Claims (1)

액상 에폭시 40~70부, 무기질 충전제 30~50부를 배합하여 점도를 300, 000~1, 000, 000cps로 조정한 A액과, 액상 폴리설파이드 고무 40~60부, 상온 경화성의 2급 또는 3급아민 3~10부, 무기질 충전제 30~50부를 배합하여 점도를 300, 000~1, 000, 000cps로 조정한 B액으로 되는 변압기 보수용 시일링제.40 to 70 parts of liquid epoxy, 30 to 50 parts of inorganic filler, A liquid with viscosity adjusted to 300, 000 to 1,000, 000 cps, 40 to 60 parts of liquid polysulfide rubber, secondary or tertiary at room temperature curing Sealing agent for transformer repair which becomes B liquid which mix | blended 3-10 parts of amines and 30-50 parts of inorganic fillers and adjusted the viscosity to 300, 000-1, 000, 000cps.
KR1019850002043A 1985-03-27 1985-03-27 Sealant KR870001744B1 (en)

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KR1019850002043A KR870001744B1 (en) 1985-03-27 1985-03-27 Sealant

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KR860007350A KR860007350A (en) 1986-10-10
KR870001744B1 true KR870001744B1 (en) 1987-09-26

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