CN105203871A - Device for metalized film self-healing experiment - Google Patents
Device for metalized film self-healing experiment Download PDFInfo
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- CN105203871A CN105203871A CN201510571812.6A CN201510571812A CN105203871A CN 105203871 A CN105203871 A CN 105203871A CN 201510571812 A CN201510571812 A CN 201510571812A CN 105203871 A CN105203871 A CN 105203871A
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Abstract
The invention discloses a device for a metalized film self-healing experiment. The device comprises a base, an observing window, a transparent plate, an insulating part, a pressure sensor, a metal connecting part, a hydraulic device, multiple pull rods and a top plate; the base is fixedly connected with the top plate through the pull rods, and the pull rods are fixedly connected with the base; the observing window is formed in the center of the base and used for observing a luminescence phenomenon in the self-healing experiment, collecting a spectrum of the self-healing experiment and analyzing a product of the self-healing experiment; the bottom surface of the transparent plate is arranged on the base; the top of the insulating part is fixedly connected with the bottom of the pressure sensor; the top of the pressure sensor makes contact with the bottom of the metal connecting part, and the pressure sensor is used for transmitting pressure by cooperating with the metal connecting part; the top of the metal connecting part makes contact with the bottom of the hydraulic device, and the metal connecting part is used for transmitting pressure exerted by the hydraulic device to the pressure sensor; the top of the hydraulic device is fixedly connected with the top plate. According to the device, deep research can be performed on the metalized film self-healing characteristic.
Description
Technical field
The invention belongs to high voltage electrical field, more specifically, relate to a kind of device for metalized film self-healing experiment.
Background technology
Metalized film is at the very thin metal level of organic film surface evaporation one deck, the metal of evaporation can be gold, silver, aluminium, zinc, aluminium zinc compound etc., general many employing aluminium or aluminium zinc compound, very thin thickness (nanoscale), make it have self-healing (due to the effect of electric current around breakdown point, by the electrode evaporation around breakdown point, and then make glass capacitor recover insulation) ability, the self-healing procedure of metalized film is a quick disruptive discharge and with the process of emitting light and heat, existing physical change also has chemical change.
In dielectric film, there is the breakdown field strength in some regions lower than peripheral region, these regions are called " electric weakness ".During capacitor work, applied voltage raises, and electric weakness place film first punctures formation discharge channel, and electric charge forms big current by discharge channel.Because metal level is very thin and sheet resistance is larger, breakdown point place big current produces Joule heat and makes local temperature very high, make surrounding metal layer by thermal evaporation to external diffusion, metallic vapour is easily ionized formation plasma, along with evaporation area expands, when plasma discharge electric arc is difficult to lasting, electric arc will extinguish, capacitor recovers insulation, partial breakdown electric discharge can not have influence on whole capacitor, this process is called " self-healing " of metallization film capacitor, after self-healing, capacitor can work on, and the self-healing performance of metallization film capacitor makes capacitor life-span greatly extend.
Self-healing performance makes the reliability of metallization film capacitor greatly improve, and under can being operated in the critical breakdown strength of energy-accumulating medium, therefore can have very high energy storage density.Require high application scenario in such as carrier-borne magnetic artillery and aircraft undersea detection technology etc. to energy storage density, metallization film capacitor is optimal selection.
The key of metallization film capacitor self-healing success is the size of self-healing energy.When metallization film capacitor work field intensity is higher, discharge breakdown is there is by when electric field intensity is high, if metal electrode is thicker, self-healing energy is comparatively large, and electrical discharge arc is longer for action time, will aggravate the aging of deielectric-coating, very large self-healing energy will not only make self-healing area increase by evaporated metal electrode, and the dielectric layer of region of discharge is heated thawing, finally cause whole thermal breakdown of capacitor, now capacitor will lose efficacy.When self-healing occurs, the pressure on metalized film also can affect its self-healing performance, when pressure is increased to a certain degree, electric arc during self-healing will be made to extinguish faster, reduces self-healing energy and self-healing area, increases the life-span of metallization film capacitor.In sum, the energy storage density of metallization film capacitor, reliability and life-span be improved, the self-healing feature of metallization film capacitor must be studied, seek to reduce the methods and measures of self-healing energy, self-healing duration and self-healing area.
In recent years, many scholars both domestic and external also study the self-healing feature of metalized film, but these laboratory studyes generally face following deficiency:
(1) pressure used during experiment is on the low side; The pressure used in metalized film self-healing test seen by current document is up to 5MPa, this pressure is lower than the actual pressure of metallization film capacitor inside, because capacitor is that metallizing film winding forms, its internal pressure is higher than external pressure, internal pressure can reach tens of MPa, and this makes these researchs truly can not reflect the actual conditions of capacitor internal;
(2) reflect that the physical quantity of metalized film self-healing feature only has electrical parameter; Because metalized film self-healing procedure is not only along with the change of electricity parameter, the arc glow of its self-healing procedure also reflects self-healing situation to a certain extent.The analysis of self-healing spectral characteristic also reflects the process of self-healing to a certain extent.
Summary of the invention
For above defect or the Improvement requirement of prior art, the invention provides a kind of device for metalized film self-healing experiment, its object is to, this device is utilized to provide enough large pressure effectively to simulate the pressure between layers of metallization film capacitor for metalized film, realize the measurement of self-healing spectrum in metalized film self-healing procedure simultaneously, in order to study its self-healing feature, to overcome the deficiency existed in existing self-healing feature research method.
For achieving the above object, according to one aspect of the present invention, provide a kind of device for metalized film self-healing experiment, comprise base, view window, transparent panel, insulating part, pressure transducer, metal connecting piece, hydraulic means, multiple pull bar, and top board, base is fixedly connected with top board by pull bar, pull bar is fixedly connected with base, view window is opened in the central authorities of base, for observing the luminescence phenomenon in self-healing experiment, gather the spectrum of self-healing experiment, and analyze the product of self-healing experiment, the bottom surface of transparent panel is arranged on base, the top of insulating part is fixedly connected with the bottom of pressure transducer, the top of pressure transducer contacts with the bottom of metal connecting piece, for coordinating transmission of pressure with metal connecting piece, the top of metal connecting piece contacts with the bottom of hydraulic means, pressure for being applied by hydraulic means passes to pressure transducer, the top of hydraulic means is fixedly connected with top board.
Preferably, described device also comprises multiple horizontal adjustment bolt, and one end that itself and pull bar deviate from top board is connected, for carrying out Level tune to described device.
Preferably, described device also comprises silica gel plate, and it is arranged between transparent panel and insulating part, the viscosity existed for utilizing it.Metalized film sample is more entirely laid thereon.
Preferably, the end face of transparent panel contacts with the bottom of silica gel plate, the bottom of insulating part and the top contact of silica gel plate.
Preferably, pressure transducer is made up of alloy steel, and its inside is provided with foil gauge, and its side is provided with data output end.For the pressure data of pressure transducer collection being exported and showing.
According to another aspect of the present invention, provide a kind of method that device utilizing metalized film self-healing to test realizes metalized film self-healing experiment, comprise the following steps:
(1) metalized film sample is in parallel with capacitor with after the first resistance and the second resistant series, then by this parallel connection part and the 3rd resistant series, and be connected to the two ends of DC high-voltage power supply, the low pressure end ground connection of DC high-voltage power supply;
(2) insulating part and pressure transducer are taken out from device, metalized film sample is affixed on transparent panel, then insulating part and pressure transducer are positioned on transparent panel;
(3) apply pressure by hydraulic means, the pressure data exported by data output end is monitored the pressure applied, and when reaching pressure needed for experiment, stops pressurization;
(4) voltage is applied by DC high-voltage power supply, until metalized film sample generation self-healing.
In general, the above technical scheme conceived by the present invention compared with prior art, can obtain following beneficial effect:
1, by the improvement of hydraulic means, pressure can be made to bring up to about 10MPa, greatly meet the demand of self-healing experiment for pressure;
2, reserve view window in the apparatus, not only can observe self-healing phenomenon, but also self-healing spectrum can be gathered, self-healing procedure is further analyzed.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of self-healing experimental circuit of the present invention.
Fig. 2 is the device schematic diagram that the present invention tests for metalized film self-healing.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.In addition, if below in described each embodiment of the present invention involved technical characteristic do not form conflict each other and just can mutually combine.
Self-healing experimental provision herein refers to carry out self-healing experiment to metalized film, and can provide certain pressure intensity and the experimental provision can observing self-healing phenomenon.
Fig. 1 is the circuit theory diagrams of metalized film self-healing experiment, C wherein
sfor metalized film sample, this sample is positioned on the silica gel plate 12 of device in Fig. 2, provides pressure by the experimental provision invented for it.
As shown in Figure 2, the present invention comprises base 1, view window 2, transparent panel 3, insulating part 4, pressure transducer 5, metal connecting piece 6, hydraulic means 7, multiple pull bar 8 and top board 9 for the device of metalized film self-healing experiment.
Base 1 is fixedly connected with top board 9 by pull bar 8, and in the present embodiment, the quantity of pull bar 8 is at least 3.
Pull bar 8 is fixedly connected with base 1.Preferably, pull bar 8 is realized and being fixedly connected with of base 1 by hold-down nut 11.
Further preferably, device of the present invention also comprises multiple horizontal adjustment bolt 10, and its one end deviating from top board 9 with pull bar 8 is connected, for carrying out Level tune to device of the present invention.
View window 2 is opened in the central authorities of base 1, for observing the luminescence phenomenon in self-healing experiment, can be gathered the spectrum of self-healing experiment simultaneously, analyze the product of self-healing experiment by view window 2.
Preferably, device of the present invention also comprises silica gel plate 12, and it is arranged between transparent panel 3 and insulating part 4, and effect is, utilizes it to there is certain viscosity, and metalized film sample is more entirely laid thereon.
The bottom surface of transparent panel 3 is arranged on base 1, and end face contacts with the bottom of silica gel plate 12.Preferably, the material that transparent panel 3 adopts is tempered glass, and it has the ability of bearing certain pressure intensity, has good light transmission.
The bottom of insulating part 4 and the top contact of silica gel plate 12, top is fixedly connected with the bottom of pressure transducer 5.Preferably, insulating part 4 adopts plastic-steel material, and adopts cylindrical structure, and this kind of material can bear certain pressure, can play again the effect of insulation in self-healing experiment.
The top of pressure transducer 5 contacts with the bottom of metal connecting piece 6, for coordinating transmission of pressure with metal connecting piece 6.Preferably, pressure transducer 5 is made up of alloy steel, the features such as by foil gauge being attached to the inside of this pressure transducer 5, this sensor has that precision is high, lateral force resistance and anti-eccentric load ability is strong, good seal performance, its maximum range is 3000kg, and output voltage signal is 0 ~ 5Vac.Be provided with data output end 13 in the side of this pressure transducer 5, the pressure data for being gathered by pressure transducer 5 exports and shows, and uses for record.
The top of metal connecting piece 6 contacts with the bottom of hydraulic means 7, and the pressure for being applied by hydraulic means 7 passes to pressure transducer 5.Preferably, metal connecting piece 6 is made up of stainless steel material.
The top of hydraulic means 7 is fixedly connected with top board 9, and its maximum hydraulic coupling of executing is 3000kg.
When using said apparatus of the present invention to carry out metalized film self-healing experiment, concrete implementation step is as follows:
(1) by metalized film sample and resistance R
2and R
3connect rear and capacitor C
0parallel connection, then by this parallel connection part and resistance R
1series connection, and be connected to the two ends of DC high-voltage power supply, the low pressure end ground connection of DC high-voltage power supply, as shown in Figure 1;
(2) insulating part 4 and pressure transducer 5 are taken out from device, metalized film sample is affixed on transparent panel 3 (if there is silica gel plate 12, then be attached on this silica gel plate 12), then insulating part 4 and pressure transducer 5 are positioned on transparent panel 3 and (if there is silica gel plate 12, are then attached on this silica gel plate 12);
(3) apply pressure by hydraulic means 7, the pressure data exported by data output end 13 is monitored the pressure applied, and when reaching pressure needed for experiment, stops pressurization;
(4) apply voltage by DC high-voltage power supply, until metalized film sample generation self-healing, now metalized film self-healing has been tested.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1., for a device for metalized film self-healing experiment, comprise base, view window, transparent panel, insulating part, pressure transducer, metal connecting piece, hydraulic means, multiple pull bar and top board, it is characterized in that,
Base is fixedly connected with top board by pull bar;
Pull bar is fixedly connected with base;
View window is opened in the central authorities of base, for observing the luminescence phenomenon in self-healing experiment, gathers the spectrum of self-healing experiment, and analyzes the product of self-healing experiment;
The bottom surface of transparent panel is arranged on base;
The top of insulating part is fixedly connected with the bottom of pressure transducer;
The top of pressure transducer contacts with the bottom of metal connecting piece, for coordinating transmission of pressure with metal connecting piece;
The top of metal connecting piece contacts with the bottom of hydraulic means, passes to pressure transducer for the pressure applied by hydraulic means;
The top of hydraulic means is fixedly connected with top board.
2. device according to claim 1, is characterized in that, also comprises multiple horizontal adjustment bolt, and one end that itself and pull bar deviate from top board is connected, for carrying out Level tune to described device.
3. device according to claim 1, is characterized in that, also comprises silica gel plate, and it is arranged between transparent panel and insulating part, the viscosity existed for utilizing it.Metalized film sample is more entirely laid thereon.
4. device according to claim 3, is characterized in that, the end face of transparent panel contacts with the bottom of silica gel plate, the bottom of insulating part and the top contact of silica gel plate.
5. device according to claim 1, is characterized in that, pressure transducer is made up of alloy steel, and the inside of pressure transducer is provided with foil gauge, and the side of pressure transducer is provided with data output end.For the pressure data of pressure transducer collection being exported and showing.
6. use device described in any one in claim 1 to 5 to realize a method for metalized film self-healing experiment, it is characterized in that, comprise the following steps:
(1) metalized film sample is in parallel with capacitor with after the first resistance and the second resistant series, then by this parallel connection part and the 3rd resistant series, and be connected to the two ends of DC high-voltage power supply, the low pressure end ground connection of DC high-voltage power supply;
(2) insulating part and pressure transducer are taken out from device, metalized film sample is affixed on transparent panel, then insulating part and pressure transducer are positioned on transparent panel;
(3) apply pressure by hydraulic means, the pressure data exported by data output end is monitored the pressure applied, and when reaching pressure needed for experiment, stops pressurization;
(4) voltage is applied by DC high-voltage power supply, until metalized film sample generation self-healing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510571812.6A CN105203871A (en) | 2015-09-09 | 2015-09-09 | Device for metalized film self-healing experiment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510571812.6A CN105203871A (en) | 2015-09-09 | 2015-09-09 | Device for metalized film self-healing experiment |
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| CN105203871A true CN105203871A (en) | 2015-12-30 |
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| CN201510571812.6A Pending CN105203871A (en) | 2015-09-09 | 2015-09-09 | Device for metalized film self-healing experiment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107422167A (en) * | 2017-04-11 | 2017-12-01 | 中国电力科学研究院 | A kind of device and method for detecting high pressure self healing capacitor self-healing failure |
| CN109031079A (en) * | 2018-06-28 | 2018-12-18 | 安徽开博电容科技有限公司 | A kind of high-voltage metallized membrane capacitance simulation self-healing test method |
| CN113406457A (en) * | 2021-07-20 | 2021-09-17 | 华中科技大学 | Micro-gap arc observation method and device |
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| JPS5563836A (en) * | 1978-11-06 | 1980-05-14 | Chiyou Lsi Gijutsu Kenkyu Kumiai | Defect detection device for insulating film |
| CN2340077Y (en) * | 1998-07-29 | 1999-09-22 | 锦州电力电容器有限责任公司 | Combined dry self-recovering high-voltage electric capacitor group |
| CN2705871Y (en) * | 2004-05-27 | 2005-06-22 | 厦门法拉电子股份有限公司 | Metallized safety film capacitor |
| CN103258642A (en) * | 2013-04-28 | 2013-08-21 | 中国西电电气股份有限公司 | Self-healing capacitor element |
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2015
- 2015-09-09 CN CN201510571812.6A patent/CN105203871A/en active Pending
Patent Citations (4)
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|---|---|---|---|---|
| JPS5563836A (en) * | 1978-11-06 | 1980-05-14 | Chiyou Lsi Gijutsu Kenkyu Kumiai | Defect detection device for insulating film |
| CN2340077Y (en) * | 1998-07-29 | 1999-09-22 | 锦州电力电容器有限责任公司 | Combined dry self-recovering high-voltage electric capacitor group |
| CN2705871Y (en) * | 2004-05-27 | 2005-06-22 | 厦门法拉电子股份有限公司 | Metallized safety film capacitor |
| CN103258642A (en) * | 2013-04-28 | 2013-08-21 | 中国西电电气股份有限公司 | Self-healing capacitor element |
Non-Patent Citations (1)
| Title |
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| 章妙: "金属化膜电容器自愈特性研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107422167A (en) * | 2017-04-11 | 2017-12-01 | 中国电力科学研究院 | A kind of device and method for detecting high pressure self healing capacitor self-healing failure |
| CN109031079A (en) * | 2018-06-28 | 2018-12-18 | 安徽开博电容科技有限公司 | A kind of high-voltage metallized membrane capacitance simulation self-healing test method |
| CN113406457A (en) * | 2021-07-20 | 2021-09-17 | 华中科技大学 | Micro-gap arc observation method and device |
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Application publication date: 20151230 |