CN105296065A - Transformer oil not prone to rancidity - Google Patents

Abstract

The invention discloses transformer oil not prone to rancidity. The transformer oil is prepared from, by weight, 4-5 parts of zinc acetylacetonate, 0.7-1 part of oleic acid, 20-24 parts of ethyl alcohol, 2-3 parts of polyimide, 0.2-0.4 part of ethylene diamine, 0.4-0.6 part of silane coupling agent KH570, 1000-1100 parts of transformer base oil, 2-3 parts of polyethyleneimine, 0.3-0.4 part of stearic acid, 0.5-0.6 part of activated zeolite, 0.4-0.6 part of barium petroleum sulfonate, 2-2.4 parts of molybdenum disulfide, 3.3-3.8 parts of boron carbide, 3.7-4 parts of cobalt sesquioxide, 1.2-1.5 parts of lanolin magnesium soap and 0.5-0.6 part of octylated diphenylamine. The raw materials are easy to obtain, equipment is simple, operation is easy, cost is low, the transformer oil has insulativity and heat conductivity and is not prone to rancidity and long in service life, and resources are greatly saved.

Description

A kind of transformer oil not easily become sour

Technical field

The present invention relates to industrial lubricant technical field, particularly relate to a kind of transformer oil not easily become sour.

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 a kind of transformer oil not easily become sour.

The present invention is achieved by the following technical solutions:

The transformer oil not easily become sour, is 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, polymine 2-3, stearic acid 0.3-0.4, active zeolite 0.5-0.6, barium mahogany sulfonate 0.4-0.6, molybdenumdisulphide 2-2.4, norbide 3.3-3.8, cobalt sesquioxide 3.7-4, lanolin magnesium soap 1.2-1.5, octylated diphenylamine 0.5-0.6.

Described a kind of transformer oil not easily become sour, be made up of following concrete steps:

(1) molybdenumdisulphide, norbide and cobalt sesquioxide are added to ball milling in ball mill to mix, add stearic 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 is heated to 200-220 ° of C, then adds particle mixing and stirring prepared by polymine, barium mahogany sulfonate and step (2), then under 1200-1400 rev/min of high speed dispersor, stir 0.5-1h, 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 molybdenumdisulphide, norbide and cobalt sesquioxide 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 polymine effectively can improve ionic environment, particle stability in transformer oil is strengthened, not free settling, the nanoparticle added can improve the insulation of transformer oil, moistureproof, the effect that anti-oxidant not easily breed bacteria is become sour, the present invention is raw materials used to be easy to get, equipment is simple, easy to operate, cost is low, insulation, heat conduction, not easily become sour rotten, long service life, greatly save resource.

Embodiment

The transformer oil not easily become sour, is 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, polymine 2, stearic acid 0.3, active zeolite 0.5, barium mahogany sulfonate 0.4, molybdenumdisulphide 2, norbide 3.3, cobalt sesquioxide 3.7, lanolin magnesium soap 1.2, octylated diphenylamine 0.5.

Described a kind of transformer oil not easily become sour, be made up of following concrete steps:

(1) molybdenumdisulphide, norbide and cobalt sesquioxide are added to ball milling in ball mill to mix, add stearic 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 is heated to 200 ° of C, then adds particle mixing and stirring prepared by polymine, barium mahogany sulfonate and step (2), then under 1200 revs/min of high speed dispersors, stir 0.5h, insulation 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 2.13,90 ° of C current displacement angle tangent values is 0.0002, and volume specific resistance is 9 × 10 ¹²Ω m, thermoelectricity conductance is 2.15Wm ^-1k ^-1, specific conductivity is 6.2pS/m.

Claims (2)

1. the transformer oil not easily become sour, 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, polymine 2-3, stearic acid 0.3-0.4, active zeolite 0.5-0.6, barium mahogany sulfonate 0.4-0.6, molybdenumdisulphide 2-2.4, norbide 3.3-3.8, cobalt sesquioxide 3.7-4, lanolin magnesium soap 1.2-1.5, octylated diphenylamine 0.5-0.6.

2. a kind of transformer oil not easily become sour according to claim 1, is characterized in that, be made up of following concrete steps:

(1) molybdenumdisulphide, norbide and cobalt sesquioxide are added to ball milling in ball mill to mix, add stearic 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 is heated to 200-220 ° of C, then adds particle mixing and stirring prepared by polymine, barium mahogany sulfonate and step (2), then under 1200-1400 rev/min of high speed dispersor, stir 0.5-1h, 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.