CN105869884A - Anti-interference high-voltage metalized polypropylene film capacitor - Google Patents

Anti-interference high-voltage metalized polypropylene film capacitor Download PDF

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Publication number
CN105869884A
CN105869884A CN201610215178.7A CN201610215178A CN105869884A CN 105869884 A CN105869884 A CN 105869884A CN 201610215178 A CN201610215178 A CN 201610215178A CN 105869884 A CN105869884 A CN 105869884A
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polypropylene screen
capacitor
core
interference
tio
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CN105869884B (en
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禹建丽
苗满香
张国辉
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Zhengzhou Institute of Aeronautical Industry Management
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Zhengzhou Institute of Aeronautical Industry Management
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G4/00Fixed capacitors; Processes of their manufacture
    • H01G4/002Details
    • H01G4/224Housing; Encapsulation
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G2/00Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/14Protection against electric or thermal overload
    • H01G2/18Protection against electric or thermal overload with breakable contacts
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G4/00Fixed capacitors; Processes of their manufacture
    • H01G4/002Details
    • H01G4/005Electrodes
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G4/00Fixed capacitors; Processes of their manufacture
    • H01G4/002Details
    • H01G4/018Dielectrics
    • H01G4/06Solid dielectrics
    • H01G4/14Organic dielectrics
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G4/00Fixed capacitors; Processes of their manufacture
    • H01G4/32Wound capacitors
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G4/00Fixed capacitors; Processes of their manufacture
    • H01G4/33Thin- or thick-film capacitors

Abstract

The invention discloses an anti-interference high-voltage metalized polypropylene film capacitor, which comprises a cover board (1), a housing (2) and a core body (3), wherein an annular bump (4) is formed in the inner wall of an opening of the cover board (1); an annular groove (5) is formed in the upper part of the housing (2); the annular bump (4) is arranged in the annular groove (5) and can longitudinally move in the annular groove (5); an elastic seal ring (6) is arranged between the inner wall of the lower part of the cover board (1) and the outer wall of the upper part of the housing (2); an elastic rubber ring (19) is fixedly connected between the annular bump (4) and the bottom part of the annular groove (5); a buffer layer (13) is arranged at the inner wall of the housing (2); a core body (3) is arranged in the housing (2); a positioning sleeve (14) is arranged at the bottom part of the core body (3); an elastic washer (17) registered in the middle part of the core body (3); and insulated heat-conducting oil (18) is sealed between the housing (2) and the core body (3). The capacitor is high in breakdown voltage, anti-interference, safe, stable and long in service lifetime.

Description

A kind of anti-interference high-voltage metallized polypropylene screen capacitor
Technical field
The present invention relates to a kind of capacitor, especially relate to a kind of anti-interference high-voltage metallized polypropylene screen capacitor.
Background technology
Metallic film capacitor operation principle is to select metalized film as the medium of capacitor element and pole plate, and roll and form, the metal level of both ends of the surface connects into pole plate by metal spraying, have that electrical property is excellent, good reliability, loss is little and self-healing performance is good feature, be widely used in instrument, instrument, television set, radio and household electrical appliance and do DC pulse, pulse and ac buck effect.Need to increase the thickness of basement membrane when preparing high-voltage metallized thin film capacitor, thus increase the volume of capacitor, so cause increasing cost, waste resource;And metallic film capacitor can produce heat in the course of the work, if the substantial amounts of heat that moment produces has little time to distribute, the intrinsic pressure increase of capacitor internal, shell blow-up can be caused, on fire, explosion phenomenon even occurs.The impregnating agent that capacitor is conventional at present is generally the vegetable oil such as Oleum Ricini, salad oil;The shortcoming using them to make the impregnating agent of capacitor maximum is that these oils can comprise some moisture, and during capacitor uses, these moisture can progressively invade capacitor body, causes condenser capacity comparatively fast to decay and lost efficacy, and reduces the performance of capacitor.And these oils life-time service there will be phenomenon of becoming sour, performance degradation, thus reduce the use cycle of capacitor.
Chinese patent CN 203644568 U discloses a kind of explosion prevention capacitor structure, this utility model provides a kind of explosion prevention capacitor structure, including capacitor main body, described capacitor main body includes shell, upper cover and core group, wherein, described capacitor main body also includes: one end is connected to the conductive pole of upper cover, and wherein, conductive pole is arranged
Have section to be less than other parts, weak structure that stress easily disconnects;The core group that the conductive pole other end connects;When portion's air pressure reaches preset value in the enclosure, upper cover bottom is heaved, and drives described conductive pole to shift, and weak structure disconnects, and all connections of core group are invalid.The weak structure of this blast resistance construction is likely to when capacitor is by foreign impacts disconnect, thus causes capacitor failure.Chinese patent CN 202423012 U disclose a kind of this utility model and relate to a kind of metallized polypropylene film capacitor, it includes capacitor body, metal shell, leading-out terminal, upper insulating boot and lower insulating boot, wherein, described capacitor body is housed in described metal shell, in described metal shell is housed in by described upper insulating boot and the combination of described lower insulating boot, wherein, described metallized polypropylene film capacitor also includes the polyisobutylene impregnating agent being completely soaked described capacitor body.This capacitor is using polyisobutylene as impregnating agent, function singleness, and viscosity is big, and poor with the compatibility of polypropylene film.
Summary of the invention
In view of this, it is an object of the invention to for the deficiencies in the prior art, it is provided that a kind of anti-interference high-voltage metallized polypropylene screen capacitor, this capacitor breakdown voltage is high, and anti-interference, safety and stability, service life are long.
For reaching above-mentioned purpose, the present invention by the following technical solutions:
A kind of anti-interference high-voltage metallized polypropylene screen capacitor, including cover plate, shell and core body, described cover plate opening inwall arranges annular protrusion, described shell upper arranges annular groove, described annular protrusion is arranged in described annular groove and can vertically move in described annular groove, arranging elastic seal ring between described cover plate lower inner wall and described shell upper outer wall, described annular protrusion fixing is connected elastic rubber ring between bottom described annular groove;Two insulator foots it are symmetrical arranged on described cover plate, on described insulator foot, exit is set, bursting diaphragm is fixed inside described shell upper, conductive pole top is welded through described bursting diaphragm and cover plate with described exit, between described cover plate and described conductive pole, sealing gasket is set, described bursting diaphragm lower surface is symmetrical arranged two conducting strips, and described conductive pole bottom is welded with described conducting strip upper surface;
Described outer casing inner wall arranges cushion, and described enclosure arranges core body, arranges positioning sleeve bottom described core body, fit elastic washer in the middle part of described core body;Described core body two ends are respectively provided with gilding layer, and described gilding layer is connected by lead-in wire respectively with conducting strip, sealed insulation conduction oil between described shell and core body.
Preferably, described core body is upper strata polypropylene screen and lower floor polypropylene screen winding forms, upper strata polypropylene screen upper surface evaporation has the zinc-aluminium coating that two-layer is arranged side by side, two-layer zinc-aluminium coating outer side edges flushes with described upper strata polypropylene screen respectively, described upper strata polypropylene screen and zinc-aluminium coating outer side edges are waveform, width is upper strata polypropylene screen width 15~18% of the intermediately remained border between described two-layer zinc-aluminium coating;Lower floor's polypropylene screen upper surface evaporation has the zinc-aluminium coating of double-edge, and described double-edge width is the 12~14% of lower floor's polypropylene screen width.
Preferably, described insulating heat-conductive oil is prepared by the raw material of following parts by weight: Oleum Ricini 50~60 parts, olive oil 20~30 parts, diarylethane 8~15 parts, modified Nano TiO2 1~1.5 part, antioxidant 0.5~1.5 parts, double ((3,4-epoxycyclohexyl) methyl) adipate esters 0.2~0.3 part, dispersant 0.1~0.3 part, matal deactivator 0.1~0.3 part.
Preferably, described antioxidant is 2, and 6-di-tert-butyl-4-methy phenol mixes by weight 1:1 with alkyl diphenylamine.
Preferably, described dispersant is polyisobutylene succinamide and/or polyisobutylene-bis-succinimide ashless dispersant.
Preferably, described modified Nano TiO2Preparation method comprise the following steps: by nano-TiO2Dissolving ultrasonic disperse 20~30min in deionized water, the pH using acid solution regulation solution is 5.0~6.0, adds modifying agent, described modifying agent and nano-TiO2Weight ratio be 1~1.5:10;Then ultrasonic disperse 60~80min at 50~60 DEG C, are washed with deionized after being removed by filtration filtrate to neutrality, vacuum drying.
Preferably, described nano-TiO2It is 1:2~3 with the weight ratio of deionized water.
Preferably, described modifying agent is that oleic acid and sodium laurate mix by weight 1:1.
Preferably, the preparation method of described insulating heat-conductive oil comprises the following steps: after raw material Oleum Ricini, olive oil and diarylethane being mixed, and adds modified Nano TiO2, antioxidant, double ((3,4-epoxycyclohexyl) methyl) adipate ester, dispersant and matal deactivator, ultrasonic disperse 50~60min at 40~60 DEG C, seal after vacuum degassing and preserve.
The invention has the beneficial effects as follows:
null1、The anti-interference high-voltage metallized polypropylene screen capacitor of the present invention,Cover plate opening inwall arranges annular protrusion,Shell upper arranges annular groove,Annular protrusion is arranged in annular groove and can vertically move in annular groove,When the substantial amounts of heat that capacitor element is breakdown or moment produces has little time to distribute,The intrinsic pressure increase of capacitor internal,Make stress in the middle part of cover plate,Thus drive annular protrusion on cover plate to move up along the annular groove of shell upper,And then drive conductive pole to move up,Owing to bursting diaphragm is fixed on inside shell upper,Bursting diaphragm will not move,Thus cause conductive pole to be peeled off with the conducting strip on bursting diaphragm,Capacitor internal is made to open a way,Reach explosion-proof effect,And between cover plate inwall and shell upper outer wall, elastic seal ring is set,May insure that during cover plate moves relative to shell and inside constant volume device, be in sealing state;Annular protrusion fixing is connected elastic rubber ring between bottom annular groove, when annular protrusion along the annular groove of shell upper in time moving up, elastic rubber ring has certain stretching, but can also fully seal inside constant volume device, prevents built-in electrical insulation conduction oil from revealing.The structure of the present invention makes the moving range of cover plate increase, stable performance, and safety is high.
Outer casing inner wall arranges cushion, it is possible to the effect to shell of the buffer capacitor internal pressure, strengthens the stability of capacitor;Arranging positioning sleeve bottom core body, fit elastic washer on core body, this structure makes capacitor core body will not produce mobile under external shock or percussion or rock, thus reaches anti-interference and shockproof effect, increases the stability of capacitor.
Core body is upper strata polypropylene screen and lower floor polypropylene screen winding forms, upper strata polypropylene screen upper surface evaporation has the zinc-aluminium coating that two-layer is arranged side by side, two-layer zinc-aluminium coating outer side edges flushes with described upper strata polypropylene screen respectively, lower floor's polypropylene screen upper surface evaporation has the zinc-aluminium coating of double-edge, form the zinc-aluminium coating polypropylene screen of inner series, thus by capacitor dividing potential drop, be equivalent to decompose on multiple capacitor pressure, substantially increase the breakdown voltage of capacitor.Upper strata polypropylene screen and zinc-aluminium coating outer side edges are waveform, by increasing capacitance it is possible to increase the gilding layer contact area to the adhesive force of capacitor and electrode with zinc-aluminium coating, anti-interference, safety is high.
2, the capacitor core body impregnating agent used in the present invention is insulating heat-conductive oil, and by oil based on Oleum Ricini and mixed with olive oil, Oleum Ricini and olive oil are vegetable oil, and wide material sources are easily degraded, free from environmental pollution;Adding diarylethane the most again, the electric field intensity on oil reservoir can be made to reduce, delay oil deterioration process, and can adsorb the free radical in oil, the quantity of suppression free radical increases, and strengthens the service life of capacitor.
Nano-TiO2More much smaller than the foreign particle in insulating heat-conductive oil, it is possible to form stable sol system with insulating heat-conductive oil, not only can improve the dielectric properties of insulating heat-conductive oil, it is also possible to the anti-flammability of reinforced insulation conduction oil and thermolysis.Modified Nano TiO2It is to use oleic acid and sodium laurate to nano-TiO2It is modified, to increase nano-TiO2The compatibility with insulating heat-conductive oil.Oleic acid molecular indention, to nano-TiO2Clad will have space, nanoparticle easily aoxidizes, and nano-TiO2Absorption to oleic acid is chemical process, the carboxyl in oleic acid and nano-TiO2The hydroxyl of particle surface reacts, and makes TiO2Surface is changed into lipophile by hydrophilic;And sodium laurate modification belongs to physical adsorption process, by sodium laurate and TiO2Surface hydrophobic form and, then form micelle, to reduce interfacial tension, increase lipophile, use oleic acid and sodium laurate mixing as modifying agent, can be conducive to the coated particle of densification, raising TiO2The compatibility with insulating heat-conductive oil.
Additionally, insulating heat-conductive oil also added antioxidant, double ((3, 4-epoxycyclohexyl) methyl) adipate ester, dispersant and matal deactivator, antioxidant is phenolic antioxidant 2, 6-di-tert-butyl-4-methy phenol is compounding with amine antioxidants alkyl diphenylamine to be formed, phenolic antioxidant antioxidant is preferable, but application temperature is relatively low, and amine antioxidants has prominent high temperature antioxygen property, to extending induction period, suppression oil product later stage oxidation effectiveness is preferable, therefore by both compound uses, collaborative antioxidative effect can be played, the stability of reinforced insulation conduction oil.Double ((3,4-epoxycyclohexyl) methyl) adipate ester has obvious inhibitory action to the voltage ageing of capacitor, owing to, for high-voltage capacitor, the shelf depreciation of capacitor can make the material in capacitor decompose, produce some low molecular materials such as H2、C2H2Deng gas, the insulating heat-conductive oil of capacitor internal and core body can be played the effect of accelerated ageing by these lower-molecular substances, additionally these low molecular weight gas can not be absorbed by insulating heat-conductive oil, the local discharging level of capacitor will be deteriorated, thus the service life of shortening capatcitor, and double ((3,4-epoxycyclohexyl) methyl) adipate ester can neutralize above-mentioned catabolite, improve the electric durability energy of insulating heat-conductive oil, and then improve reliability and the life-span of capacitor.Matal deactivator can the catalytic action to oil oxidation of the inhibitory activity metal ion, increase further the stability of insulating heat-conductive oil, increase the service life of capacitor, the matal deactivator used in the present invention is T551 and T1201.
Accompanying drawing explanation
Fig. 1 is the structural representation of capacitor of the present invention;
Fig. 2 is the structural representation of core body of the present invention.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Embodiment 1
As depicted in figs. 1 and 2, a kind of anti-interference high-voltage metallized polypropylene screen capacitor, including cover plate 1, shell 2 and core body 3, cover plate 1 opening inwall arranges annular protrusion 4, shell 2 top arranges annular groove 5, in annular protrusion 4 is arranged on annular groove 5 and can vertically move in annular groove 5, between cover plate 1 lower inner wall and shell 2 external wall of upper portion, elastic seal ring 6 is set, it can be ensured that capacitor internal is in sealing state when annular protrusion 4 vertically moves in annular groove 5;Annular protrusion 4 fixing is connected elastic rubber ring 19 between bottom annular groove 5, and can be further assured that capacitor internal is in fully sealed position;Two insulator foots 7 it are symmetrical arranged on cover plate 1, exit 8 it is provided with on insulator foot 7, shell 2 upper inner fixes bursting diaphragm 9, conductive pole 10 top is welded through bursting diaphragm 9 and cover plate 1 with exit 8, sealing gasket 11 is set between cover plate 1 and conductive pole 10, bursting diaphragm 9 lower surface is symmetrical arranged two conducting strips 12, conductive pole 10 bottom is welded with conducting strip 12 upper surface, in the present embodiment, conductive pole 10 bottom is that semicircle is spherical, this design may insure that when capacitor internal pressure increases, conductive pole is peeled off smoothly with the conducting strip on bursting diaphragm, thus play explosion-proof;Shell 2 inwall arranges cushion 13, with the impact suffered by buffer capacitor inside and outside or pressure, can strengthen the stability of capacitor.Shell 2 is internal arranges core body 3, arranges positioning sleeve 14, fit elastic washer 17 in the middle part of core body 3 bottom core body 3.Core body 3 forms for upper strata polypropylene screen 24 and lower floor's polypropylene screen 22 winding, upper strata polypropylene screen 24 upper surface evaporation has the zinc-aluminium coating 20 that two-layer is arranged side by side, two-layer zinc-aluminium coating 20 outer side edges flushes with upper strata polypropylene screen 24 respectively, upper strata polypropylene screen 24 and zinc-aluminium coating 20 outer side edges are waveform, and the width of the intermediately remained border 21 between two-layer zinc-aluminium coating 20 is the 15~18% of upper strata polypropylene screen 24 width;Lower floor's polypropylene screen 22 upper surface evaporation has the zinc-aluminium coating 20 of double-edge, and double-edge 23 width is the 12~14% of lower floor's polypropylene screen 22 width;Control intermediately remained border and the width of double-edge, the edge breakdown rate of core body 3 can not only be reduced, also help and produce the product that apparent size is less.Core body 3 two ends are respectively provided with gilding layer 15, and gilding layer 15 is connected by lead-in wire 16 respectively with conducting strip 12;Sealed insulation conduction oil 18 between shell 2 and core body 3.
Insulating heat-conductive oil is prepared by the raw material of following parts by weight: Oleum Ricini 50 parts, 30 parts of olive oil, diarylethane 15 parts, modified Nano TiO2 1 part, antioxidant 0.5 part, double ((3,4-epoxycyclohexyl) methyl) adipate ester 0.2 part, dispersant polyisobutylene succinamide 0.3 part, matal deactivator T551 is 0.3 part.
Wherein antioxidant is that 2,6 di tert butyl 4 methyl phenol mixes by weight 1:1 with alkyl diphenylamine.
Wherein modified Nano TiO2Preparation method comprise the following steps: by nano-TiO2Dissolve ultrasonic disperse 30min in deionized water, wherein nano-TiO2Being 1:2 with the weight ratio of deionized water, the pH using hydrochloric acid solution regulation solution is 5.0, adds modifying agent, and modifying agent is that oleic acid and sodium laurate mix by weight 1:1, modifying agent and nano-TiO2Weight ratio be 1:10;Then ultrasonic disperse 60min at 50~60 DEG C, is washed with deionized after being removed by filtration filtrate to neutrality, vacuum drying.
The preparation method of insulating heat-conductive oil comprises the following steps: after raw material Oleum Ricini, olive oil and diarylethane being mixed, and adds modified Nano TiO2, antioxidant, double ((3,4-epoxycyclohexyl) methyl) adipate ester, dispersant and matal deactivator, ultrasonic disperse 50min at 40~60 DEG C, seal after vacuum degassing and preserve.
Embodiment 2
Embodiment 2 is substantially the same manner as Example 1, and difference is:
Insulating heat-conductive oil is prepared by the raw material of following parts by weight: Oleum Ricini 52 parts, 28 parts of olive oil, diarylethane 12 parts, modified Nano TiO2 1.1 parts, antioxidant 0.8 part, double ((3,4-epoxycyclohexyl) methyl) adipate ester 0.25 part, polyisobutylene-bis-succinimide ashless dispersant 0.25 part, matal deactivator T1201 is 0.25 part.
Wherein modified Nano TiO2Preparation method comprise the following steps: by nano-TiO2Dissolve ultrasonic disperse 25min in deionized water, wherein nano-TiO2Being 1:2.5 with the weight ratio of deionized water, the pH using salpeter solution regulation solution is 5.5, adds modifying agent, and modifying agent is that oleic acid and sodium laurate mix by weight 1:1, modifying agent and nano-TiO2Weight ratio be 1.2:10;Then ultrasonic disperse 65min at 50~60 DEG C, is washed with deionized after being removed by filtration filtrate to neutrality, vacuum drying.
The preparation method of insulating heat-conductive oil comprises the following steps: after raw material Oleum Ricini, olive oil and diarylethane being mixed, and adds modified Nano TiO2, antioxidant, double ((3,4-epoxycyclohexyl) methyl) adipate ester, dispersant and matal deactivator, ultrasonic disperse 55min at 40~60 DEG C, seal after vacuum degassing and preserve.
Embodiment 3
Embodiment 3 is substantially the same manner as Example 1, and difference is:
Insulating heat-conductive oil is prepared by the raw material of following parts by weight: Oleum Ricini 54 parts, 25 parts of olive oil, diarylethane 10 parts, modified Nano TiO2 1.2 parts, antioxidant 0.9 part, double ((3,4-epoxycyclohexyl) methyl) adipate ester 0.3 part, dispersant polyisobutylene succinamide 0.2 part, matal deactivator T551 is 0.2 part.
Wherein modified Nano TiO2Preparation method comprise the following steps: by nano-TiO2Dissolve ultrasonic disperse 20min in deionized water, wherein nano-TiO2Being 1:3 with the weight ratio of deionized water, the pH using sulfuric acid solution regulation solution is 6.0, adds modifying agent, and modifying agent is that oleic acid and sodium laurate mix by weight 1:1, modifying agent and nano-TiO2Weight ratio be 1.5:10;Then ultrasonic disperse 70min at 50~60 DEG C, is washed with deionized after being removed by filtration filtrate to neutrality, vacuum drying.
The preparation method of insulating heat-conductive oil comprises the following steps: after raw material Oleum Ricini, olive oil and diarylethane being mixed, and adds modified Nano TiO2, antioxidant, double ((3,4-epoxycyclohexyl) methyl) adipate ester, dispersant and matal deactivator, ultrasonic disperse 60min at 40~60 DEG C, seal after vacuum degassing and preserve.
Embodiment 4
Embodiment 4 is substantially the same manner as Example 1, and difference is:
Insulating heat-conductive oil is prepared by the raw material of following parts by weight: Oleum Ricini 55 parts, 24 parts of olive oil, diarylethane 9 parts, modified Nano TiO2 1.3 parts, antioxidant 1.0 parts, double ((3,4-epoxycyclohexyl) methyl) adipate ester 0.2 part, dispersant polyisobutylene succinamide 0.15 part, matal deactivator T1201 is 0.15 part, modification infusorial earth 4 parts.
Wherein modified Nano TiO2Preparation method comprise the following steps: by nano-TiO2Dissolve ultrasonic disperse 22min in deionized water, wherein nano-TiO2Being 1:2.2 with the weight ratio of deionized water, the pH using hydrochloric acid solution regulation solution is 5.8, adds modifying agent, and modifying agent is that oleic acid and sodium laurate mix by weight 1:1, modifying agent and nano-TiO2Weight ratio be 1.3:10;Then ultrasonic disperse 75min at 50~60 DEG C, is washed with deionized after being removed by filtration filtrate to neutrality, vacuum drying.
Wherein the preparation method of modification infusorial earth comprises the following steps: kieselguhr is immersed in 1.5h in the sulphuric acid that volume fraction is 15%, crosses and is washed with deionized to neutrality after filtering to remove filtrate, and ovendry power is broken into superfines.
The preparation method of insulating heat-conductive oil comprises the following steps: after raw material Oleum Ricini, olive oil and diarylethane being mixed, and adds modified Nano TiO2, antioxidant, double ((3,4-epoxycyclohexyl) methyl) adipate ester dispersant, dispersant, matal deactivator and modification infusorial earth, ultrasonic disperse 58min at 40~60 DEG C, seal after vacuum degassing and preserve.
The insulating heat-conductive oil of the present embodiment with the addition of modification infusorial earth, kieselguhr is through modified, remove the metallic compound in kieselguhr, cut diatomaceous pore volume and specific surface area increases, pore structure is improved, the moisture in insulating heat-conductive oil can be adsorbed, delay capacitor aging, increase the service life of capacitor.
Embodiment 5
Embodiment 5 is substantially the same manner as Example 1, and difference is:
Insulating heat-conductive oil is prepared by the raw material of following parts by weight: Oleum Ricini 58 parts, 22 parts of olive oil, diarylethane 8 parts, modified Nano TiO2 1.4 parts, antioxidant 1.2 parts, double ((3,4-epoxycyclohexyl) methyl) adipate ester 0.25 part, polyisobutylene-bis-succinimide ashless dispersant 0.1 part, matal deactivator T551 is 0.1 part.
Wherein modified Nano TiO2Preparation method comprise the following steps: by nano-TiO2Dissolve ultrasonic disperse 24min in deionized water, wherein nano-TiO2Being 1:2.8 with the weight ratio of deionized water, the pH using salpeter solution regulation solution is 6.0, adds modifying agent, and modifying agent is that oleic acid and sodium laurate mix by weight 1:1, modifying agent and nano-TiO2Weight ratio be 1.4:10;Then ultrasonic disperse 80min at 50~60 DEG C, is washed with deionized after being removed by filtration filtrate to neutrality, vacuum drying.
The preparation method of insulating heat-conductive oil comprises the following steps: first raw material Oleum Ricini and olive oil carry out decompression distillation, after then mixing with diarylethane, adds modified Nano TiO2, antioxidant, double ((3,4-epoxycyclohexyl) methyl) adipate ester, dispersant and matal deactivator, ultrasonic disperse 60min at 40~60 DEG C, seal after vacuum degassing and preserve.
The method using decompression distillation in the present embodiment removes the moisture in Oleum Ricini and olive oil, and Oleum Ricini and olive oil are carried out refine, to delay capacitor aging, increases the service life of capacitor.
Embodiment 6
Embodiment 6 is substantially the same manner as Example 1, and difference is:
Insulating heat-conductive oil is prepared by the raw material of following parts by weight: Oleum Ricini 60 parts, 20 parts of olive oil, diarylethane 11 parts, modified Nano TiO2 1.5 parts, antioxidant 1.5 parts, double ((3,4-epoxycyclohexyl) methyl) adipate ester 0.3 part, polyisobutylene-bis-succinimide ashless dispersant 0.2 part, matal deactivator T1201 is 0.2 part, modification infusorial earth 6 parts.
Wherein modified Nano TiO2Preparation method comprise the following steps: by nano-TiO2Dissolve ultrasonic disperse 26min in deionized water, wherein nano-TiO2Being 1:3 with the weight ratio of deionized water, the pH using sulfuric acid solution regulation solution is 5.5, adds modifying agent, and modifying agent is that oleic acid and sodium laurate mix by weight 1:1, modifying agent and nano-TiO2Weight ratio be 1:10;Then ultrasonic disperse 80min at 50~60 DEG C, is washed with deionized after being removed by filtration filtrate to neutrality, vacuum drying.
Wherein the preparation method of modification infusorial earth comprises the following steps: kieselguhr is immersed in 1h in the sulphuric acid that volume fraction is 20%, crosses and is washed with deionized to neutrality after filtering to remove filtrate, and ovendry power is broken into superfines.
The preparation method of insulating heat-conductive oil comprises the following steps: first raw material Oleum Ricini and olive oil carry out decompression distillation, after then mixing with diarylethane, adds modified Nano TiO2, antioxidant, double ((3,4-epoxycyclohexyl) methyl) adipate ester, dispersant, matal deactivator and modification infusorial earth, ultrasonic disperse 60min at 40~60 DEG C, seal after vacuum degassing and preserve.
With the addition of modification infusorial earth in the present embodiment in insulating heat-conductive oil, kieselguhr, through modified, removes the metallic compound in kieselguhr, cuts diatomaceous pore volume and specific surface area increases, and pore structure is improved, it is possible to the moisture in absorption insulating heat-conductive oil;The method additionally using decompression distillation removes the moisture in Oleum Ricini and olive oil, and Oleum Ricini and olive oil are carried out refine, delays capacitor aging, increases the service life of capacitor.
Embodiment 7
Embodiment 7 is substantially the same manner as Example 1, and difference is:
Insulating heat-conductive oil is prepared by the raw material of following parts by weight: Oleum Ricini 56 parts, 23 parts of olive oil, diarylethane 14 parts, modified Nano TiO2 1.3 parts, antioxidant 1.0 parts, double ((3,4-epoxycyclohexyl) methyl) adipate ester 0.2 part, dispersant polyisobutylene succinamide 0.15 part, matal deactivator T1201 is 0.15 part.
Wherein modified Nano TiO2Preparation method comprise the following steps: by nano-TiO2Dissolve ultrasonic disperse 22min in deionized water, wherein nano-TiO2Being 1:2.2 with the weight ratio of deionized water, the pH using hydrochloric acid solution regulation solution is 5.8, adds modifying agent, and modifying agent is that oleic acid and sodium laurate mix by weight 1:1, modifying agent and nano-TiO2Weight ratio be 1.5:10;Then ultrasonic disperse 75min at 50~60 DEG C, is washed with deionized after being removed by filtration filtrate to neutrality, vacuum drying.
The preparation method of insulating heat-conductive oil comprises the following steps: after raw material Oleum Ricini, olive oil and diarylethane being mixed, and adds modified Nano TiO2, antioxidant, double ((3,4-epoxycyclohexyl) methyl) adipate ester, dispersant and matal deactivator, ultrasonic disperse 55min at 40~60 DEG C, seal after vacuum degassing and preserve.
Finally illustrate is, above example is only in order to illustrate technical scheme and unrestricted, other amendment or equivalents that technical scheme is made by those of ordinary skill in the art, without departing from the spirit and scope of technical solution of the present invention, all should contain in the middle of scope of the presently claimed invention.

Claims (9)

1. an anti-interference high-voltage metallized polypropylene screen capacitor, it is characterized in that, including cover plate (1), shell (2) and core body (3), described cover plate (1) opening inwall arranges annular protrusion (4), described shell (2) top arranges annular groove (5), described annular protrusion (4) is arranged in described annular groove (5) and can vertically move in described annular groove (5), elastic seal ring (6) is set between described cover plate (1) lower inner wall and described shell (2) external wall of upper portion, fix between described annular protrusion (4) with described annular groove (5) bottom and be connected elastic rubber ring (19);Two insulator foots (7) it are symmetrical arranged on described cover plate (1), exit (8) is set on described insulator foot (7), described shell (2) upper inner fixes bursting diaphragm (9), conductive pole (10) top is welded through described bursting diaphragm (9) and cover plate (1) with described exit (8), sealing gasket (11) is set between described cover plate (1) and described conductive pole (10), described bursting diaphragm (9) lower surface is symmetrical arranged two conducting strips (12), and described conductive pole (10) bottom is welded with described conducting strip (12) upper surface;
Described shell (2) inwall arranges cushion (13), and the internal core body (3) that arranges of described shell (2), described core body (3) bottom arranges positioning sleeve (14), described core body (3) middle part fit elastic washer (17);Described core body (3) two ends are respectively provided with gilding layer (15), and described gilding layer (15) is connected by lead-in wire (16) respectively with conducting strip (12), sealed insulation conduction oil (18) between described shell (2) and core body (3).
One the most according to claim 1 anti-interference high-voltage metallized polypropylene screen capacitor, it is characterized in that, described core body (3) be upper strata polypropylene screen (24) and lower floor's polypropylene screen (22) winding form, upper strata polypropylene screen (24) upper surface evaporation has the zinc-aluminium coating (20) that two-layer is arranged side by side, two-layer zinc-aluminium coating (20) outer side edges flushes with described upper strata polypropylene screen (24) respectively, described upper strata polypropylene screen (24) and zinc-aluminium coating outer side edges are waveform, width is upper strata polypropylene screen (24) width 15~18% of intermediately remained border (21) between described two-layer zinc-aluminium coating (20);Lower floor's polypropylene screen (22) upper surface evaporation has the zinc-aluminium coating (20) of double-edge, and described double-edge (23) width is the 12~14% of lower floor's polypropylene screen (22) width.
One the most according to claim 1 and 2 anti-interference high-voltage metallized polypropylene screen capacitor, it is characterized in that, described insulating heat-conductive oil is prepared by the raw material of following parts by weight: Oleum Ricini 50~60 parts, olive oil 20~30 parts, diarylethane 8~15 parts, modified Nano TiO2 1~1.5 part, antioxidant 0.5~1.5 parts, double ((3,4-epoxycyclohexyl) methyl) adipate esters 0.2~0.3 part, dispersant 0.1~0.3 part, matal deactivator 0.1~0.3 part.
One the most according to claim 3 anti-interference high-voltage metallized polypropylene screen capacitor, it is characterised in that described antioxidant is 2,6-di-tert-butyl-4-methy phenol mixes by weight 1:1 with alkyl diphenylamine.
One the most according to claim 3 anti-interference high-voltage metallized polypropylene screen capacitor, it is characterised in that described dispersant is polyisobutylene succinamide and/or polyisobutylene-bis-succinimide ashless dispersant.
One the most according to claim 3 anti-interference high-voltage metallized polypropylene screen capacitor, it is characterised in that described modified Nano TiO2Preparation method comprise the following steps: by nano-TiO2Dissolving ultrasonic disperse 20~30min in deionized water, the pH using acid solution regulation solution is 5.0~6.0, adds modifying agent, described modifying agent and nano-TiO2Weight ratio be 1~1.5:10;Then ultrasonic disperse 60~80min at 50~60 DEG C, are washed with deionized after being removed by filtration filtrate to neutrality, vacuum drying.
One the most according to claim 6 anti-interference high-voltage metallized polypropylene screen capacitor, it is characterised in that described nano-TiO2It is 1:2~3 with the weight ratio of deionized water.
One the most according to claim 6 anti-interference high-voltage metallized polypropylene screen capacitor, it is characterised in that described modifying agent is that oleic acid and sodium laurate mix by weight 1:1.
One the most according to claim 3 anti-interference high-voltage metallized polypropylene screen capacitor, it is characterised in that the preparation method of described insulating heat-conductive oil comprises the following steps: after raw material Oleum Ricini, olive oil and diarylethane being mixed, and adds modified Nano TiO2, antioxidant, double ((3,4-epoxycyclohexyl) methyl) adipate ester, dispersant and matal deactivator, ultrasonic disperse 50~60min at 40~60 DEG C, seal after vacuum degassing and preserve.
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CN106206007A (en) * 2016-09-14 2016-12-07 铜陵源丰电子有限责任公司 A kind of large scale industry electricity container of automatic on/off electricity
CN107039175A (en) * 2017-03-10 2017-08-11 铜陵市佳龙飞电容器有限公司 A kind of new super-silent explosive-proof sealed capacitor
CN108711511A (en) * 2018-08-24 2018-10-26 安徽中容电子有限公司 A kind of anti-explosion film capacitor for preventing that electrical breakdown occurs between the shell of pole
CN111009414A (en) * 2019-12-27 2020-04-14 安徽航睿电子科技有限公司 High-voltage split capacitor
CN111627700A (en) * 2020-06-10 2020-09-04 长兴友畅电子有限公司 X2 anti-electromagnetic interference filter capacitor based on bridging suppression surge performance
CN112071668A (en) * 2020-09-02 2020-12-11 张丽华 Combined capacitor
EP3901645A1 (en) * 2020-04-20 2021-10-27 ABB Schweiz AG A method and an arrangement for monitoring at least one capacitor in an electric power circuit

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CN106206007A (en) * 2016-09-14 2016-12-07 铜陵源丰电子有限责任公司 A kind of large scale industry electricity container of automatic on/off electricity
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CN111009414B (en) * 2019-12-27 2021-03-23 安徽航睿电子科技有限公司 High-voltage split capacitor
EP3901645A1 (en) * 2020-04-20 2021-10-27 ABB Schweiz AG A method and an arrangement for monitoring at least one capacitor in an electric power circuit
CN111627700A (en) * 2020-06-10 2020-09-04 长兴友畅电子有限公司 X2 anti-electromagnetic interference filter capacitor based on bridging suppression surge performance
CN111627700B (en) * 2020-06-10 2021-07-20 长兴友畅电子有限公司 X2 anti-electromagnetic interference filter capacitor based on bridging suppression surge performance
CN112071668A (en) * 2020-09-02 2020-12-11 张丽华 Combined capacitor

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