CN105296099A - Transformer oil with high stability - Google Patents

Abstract

The invention discloses transformer oil with the high stability. The transformer oil is prepared from, by weight, 4-5 parts of zinc acetylacetonate hydrate, 0.7-1 part of oleic acid, 20-24 parts of ethyl alcohol, 2-3 parts of polyimide, 0.2-0.4 part of ethylenediamine, 0.4-0.6 part of silane coupling agents KH5700, 1000-1100 parts of transformer base oil, 2-3 parts of polyvinylamine, 0.3-0.4 part of linoleic acid, 0.3-0.4 part of oxystearin, 30-34 parts of dimethyl silicone oil, 0.3-0.4 part of 2,6- dimethylmorpholine, 3-4 parts of carbon nano tubes, 3.3-3.6 parts of synthetic diamond powder, 3.7-4.3 parts of calcium carbonate and 0.3-0.4 part of benzotriazole. According to the transformer oil with the high stability, the problems that transformer oil is low in stability and prone to oxidative deterioration and rancidification are effectively solved, the potential safety hazard is reduced, the service life is prolonged, the used raw materials are simple and easy to obtain, no toxin exists, environmental protection is achieved, operation is easy, the application prospect is good, and popularization is worthy.

Description

The transformer oil that a kind of stability is high

Technical field

The present invention relates to industrial lubricant technical field, particularly relate to the transformer oil that a kind of stability is high.

Background technology

In recent years, occur in electric power accident both domestic and external people are recognized the safety of power system relates to the safety of entire society's economic life.In the process of power system power transmission and transformation, transformer is as the tie of delivery of electrical energy, and be one of equipment of most important and most critical in power equipment, its safe and stable operation is related to the steady running of whole electrical network.Operation transformer in systems in which, once there is major accident, not only can cause the autoclasia of equipment, also can interrupt the electric power supply of power network, causes tremendous influence to the production of society and life.Especially the voltage range along with power system is more and more higher, the progressively deterioration problem of the transformer insulated characteristic of long-time running in power system seems more outstanding, therefore, improve the insulation characterisitic that transformer runs, suppress aging of insulation in transformer, thus reduce that insulating fault become a reality in the urgent need to.Transformer oil is as dielectric most important in power transformer, and assume responsibility for the dual role of heat radiation and insulation, therefore, the heat dispersion and the insulating property that how to improve transformer oil receive more concern.Traditional transformer oil thermal conductivity is less, do not meet more and more higher radiating requirements, secondly more and more higher voltage range and miniaturization all require that dielectric must have higher insulation strength, based on this, in order to adapt to the developing direction of transformer Large Copacity, extra-high pressure grade and miniaturization, improve the insulation characterisitic of traditional transformer oil long-time running, research insulating property are higher, the better transformer oil of thermal ageing properties is extremely urgent.

Summary of the invention

The object of the invention is exactly the defect in order to make up prior art, provides the transformer oil that a kind of stability is high.

The present invention is achieved by the following technical solutions:

The transformer oil that a kind of stability is high, be made up of the raw material of following weight part: zinc acetylacetonate 4-5, oleic acid 0.7-1, ethanol 20-24, polyimide 2-3, quadrol 0.2-0.4, silane coupling agent KH5700.4-0.6, transformer foundation oil 1000-1100, polyvinylamine 2-3, linolic acid 0.3-0.4, Oxystearin 0.3-0.4, dimethyl silicone oil 30-34,2,6-thebaine quinoline 0.3-0.4, carbon nanotube 3-4, artificial diamond's powder 3.3-3.6, calcium carbonate 3.7-4.3, benzotriazole 0.3-0.4.

The transformer oil that described a kind of stability is high, be made up of following concrete steps:

(1) carbon nanotube, artificial diamond's powder and calcium carbonate are added to ball milling in ball mill to mix, add linolic acid again and continue ball milling 0.5-1h, by zinc acetylacetonate, ethanol and oleic acid mix and blend, ultrasonicly to clarify to solution, add the mixed powder then hydro-thermal reaction 20-24h under 160-165 ° of C of above-mentioned preparation again, precipitation is dehydrated for subsequent use;

(2) polyimide is heated to melting, then adds quadrol and silane coupling agent KH570 mixes, be sprayed on particle prepared by step (1), for subsequent use after naturally cooling;

(3) transformer foundation oil and dimethyl silicone oil are mixed and heated to 200-220 ° of C, add particle mixing and stirring prepared by polyvinylamine, benzotriazole and step (2) again, then under 1200-1400 rev/min of high speed dispersor, 0.5-1h is stirred, insulation 2-3h;

(4) add other surplus materials by after the transformer oil cool to room temperature in (3), dispersed with stirring is evenly filtered afterwards, and removing impurity, can obtain.

Advantage of the present invention is: the present invention adopts the stearic acid modified nanoparticle of tensio-active agent, at nano particle carbon nanotube, artificial diamond's powder and calcium carbonate surface formation protective layer prevent the reunion between nano particle, improve the stability of nano-fluid, hydrophilic macromolecule polyimide is adopted to be coated on nanoparticle surface, macromolecular compound forms one deck protecting sheathing, the distance between solid particulate is prevented to reduce further, improve the permanent stability of suspension, in transformer foundation oil, add polyelectrolyte polyvinylamine effectively can improve ionic environment, particle stability in transformer oil is strengthened, not free settling, the nanoparticle added improves the corrosion-resistant of transformer oil significantly, wear-resisting, lubrication, high temperature resistant, the performance of the aspect such as heat-resisting, improve the stability of transformer oil greatly, increase the service life, it is not high that the present invention effectively solves transformer oil stability, oxidizable rotten, the problem such as to become sour, reduce potential safety hazard, extend work-ing life, and it is raw materials used simple and easy to get, asepsis environment-protecting, easy to operate, application prospect is good, be worthy to be popularized.

Embodiment

The transformer oil that a kind of stability is high, be made up of the raw material of following weight part (kilogram): zinc acetylacetonate 4, oleic acid 0.7, ethanol 20, polyimide 2, quadrol 0.2, silane coupling agent KH5700.4, transformer foundation oil 1000, polyvinylamine 2, linolic acid 0.3, Oxystearin 0.3, dimethyl silicone oil 30,2,6 thebaine quinoline 0.3, carbon nanotube 3, artificial diamond's powder 3.3, calcium carbonate 3.7, benzotriazole 0.3.

The transformer oil that described a kind of stability is high, be made up of following concrete steps:

(1) carbon nanotube, artificial diamond's powder and calcium carbonate are added to ball milling in ball mill to mix, add linolic acid again and continue ball milling 0.5h, by zinc acetylacetonate, ethanol and oleic acid mix and blend, ultrasonicly to clarify to solution, add the mixed powder then hydro-thermal reaction 20h under 160 ° of C of above-mentioned preparation again, precipitation is dehydrated for subsequent use;

(2) polyimide is heated to melting, then adds quadrol and silane coupling agent KH570 mixes, be sprayed on particle prepared by step (1), for subsequent use after naturally cooling;

(3) transformer foundation oil and dimethyl silicone oil are mixed and heated to 200 ° of C, then add particle mixing and stirring prepared by polyvinylamine, benzotriazole and step (2), then under 1200 revs/min of high speed dispersors, stir 0.5h, be incubated 2h;

(4) add other surplus materials by after the transformer oil cool to room temperature in (3), dispersed with stirring is evenly filtered afterwards, and removing impurity, can obtain.

Transformer oil work voltage breakdown of the present invention is for more than 80KV, and specific inductivity is 2.24,90 ° of C current displacement angle tangent values is 0.0003, and volume specific resistance is 9 × 10 ¹²Ω m, thermoelectricity conductance is 2.38Wm ^-1k ^-1, specific conductivity is 6.2pS/m.

Claims (2)

1. the transformer oil that a stability is high, it is characterized in that, be made up of the raw material of following weight part: zinc acetylacetonate 4-5, oleic acid 0.7-1, ethanol 20-24, polyimide 2-3, quadrol 0.2-0.4, silane coupling agent KH5700.4-0.6, transformer foundation oil 1000-1100, polyvinylamine 2-3, linolic acid 0.3-0.4, Oxystearin 0.3-0.4, dimethyl silicone oil 30-34,2,6-thebaine quinoline 0.3-0.4, carbon nanotube 3-4, artificial diamond's powder 3.3-3.6, calcium carbonate 3.7-4.3, benzotriazole 0.3-0.4.

2. the transformer oil that a kind of stability is high according to claim 1, is characterized in that, is made up of following concrete steps:

(1) carbon nanotube, artificial diamond's powder and calcium carbonate are added to ball milling in ball mill to mix, add linolic acid again and continue ball milling 0.5-1h, by zinc acetylacetonate, ethanol and oleic acid mix and blend, ultrasonicly to clarify to solution, add the mixed powder then hydro-thermal reaction 20-24h under 160-165 ° of C of above-mentioned preparation again, precipitation is dehydrated for subsequent use;

(2) polyimide is heated to melting, then adds quadrol and silane coupling agent KH570 mixes, be sprayed on particle prepared by step (1), for subsequent use after naturally cooling;

(3) transformer foundation oil and dimethyl silicone oil are mixed and heated to 200-220 ° of C, add particle mixing and stirring prepared by polyvinylamine, benzotriazole and step (2) again, then under 1200-1400 rev/min of high speed dispersor, 0.5-1h is stirred, insulation 2-3h;

(4) add other surplus materials by after the transformer oil cool to room temperature in (3), dispersed with stirring is evenly filtered afterwards, and removing impurity, can obtain.