CN105913984B - A kind of apparatus and method on use glow discharge fluorination treatment disc insulator surface - Google Patents
A kind of apparatus and method on use glow discharge fluorination treatment disc insulator surface Download PDFInfo
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- CN105913984B CN105913984B CN201610325824.5A CN201610325824A CN105913984B CN 105913984 B CN105913984 B CN 105913984B CN 201610325824 A CN201610325824 A CN 201610325824A CN 105913984 B CN105913984 B CN 105913984B
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- seal cavity
- disc insulator
- electrode
- glow discharge
- field electrode
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
- H01B19/04—Treating the surfaces, e.g. applying coatings
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- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses a kind of apparatus and method on use glow discharge fluorination treatment disc insulator surface, after methods described is by disc insulator cleaning, drying, it is placed in a seal cavity, connects two electrodes respectively up and down.Seal cavity is vacuumized using vavuum pump, and to being filled with hypobaric SF in cavity6Gas.The power-frequency voltage amplitude put on electrode is adjusted so that producing SF between electrode6The glow discharge of gas, loop current value is recorded using ammeter, and under certain current amplitude, the plasma produced using the glow discharge carries out the fluorination treatment of a period of time to disc insulator surface.The present invention uses SF6Glow discharge plasma fluorination treatment insulator surface, discharge current is small, and voltage magnitude is low, and disc insulator is not damaged, and can have the advantages that easy to operate, safe and efficient, with low cost in the edge flashing voltage for greatly improving disc insulator interior in short-term.
Description
Technical field
The invention belongs to SF6Metal enclosed switchgear (GIS) insulating protection field, more particularly to one kind glow discharge
The apparatus and method on fluorination treatment disc insulator surface.
Background technology
SF6Metal enclosed switchgear (GIS) is internal with SF6Gas as dielectric, with good insulating properties,
It is more extensively used in power system.In the connection bus of GIS, disc insulator plays isolation air chamber, support and leads
The important function such as body and insulation, but because its surface breakdown field intensity is less than the gap breakdown field intensity under the same terms, also below phase
With the insulation daughter disruptive field intensity of size, so disc insulator is along the vulnerable area that face is that GIS device insulate.In fact, basin
The edge flashing phenomenon of formula insulator result in many GIS device failures, cause huge economic loss.
In engineering, improving the method for disc insulator edge flashing voltage mainly has optimization insulator shape, face coat
And increase bucking electrode etc..Although these methods can improve insulator edge flashing voltage, raising 20% is typically only capable to
~40% or so；Moreover, insulator may need to carry out secondary operation after forming, and manufacturing procedure is more complicated, meeting
Greatly increase insulator manufacturing cost and cycle.
The content of the invention
It is described the invention discloses a kind of device on use glow discharge fluorination treatment disc insulator surface based on this
Device includes：Seal cavity, vavuum pump, electrode, SF6Gas cylinder；
The seal cavity, vavuum pump and SF6Gas cylinder is connected by threeway converting interface；
The vavuum pump is used to carry out vacuumize process to seal cavity；
The SF6Gas cylinder is used to be filled with SF to seal cavity6Gas；
The electrode is located in seal cavity.
The invention also discloses a kind of method on utilization glow discharge fluorination treatment disc insulator surface, its feature exists
In the described method comprises the following steps：
S1, disc insulator is processed after, by disc insulator be arranged on seal cavity high-low pressure electrode between；
S2, seal cavity is vacuumized using vavuum pump, then to being filled with SF in seal cavity6Gas, closes SF6Gas cylinder
Valve, to electrode applied voltage；
S3, the amplitude of the applied voltage is adjusted to producing SF between electrode6Glow discharge plasma, and cause electric discharge electricity
Stream reaches 1-100mA, carries out the fluorination treatment of 1-10h to disc insulator surface using the plasma.
Apparatus and method provided by the present invention, can at low pressure produce SF6Glow discharge plasma, to insulation
Sublist face carries out fluorination treatment；The discovery when the disc insulator after to treatment carries out subsequent experimental, its flashover voltage is shown
Write lifting, insulating properties are improved, thus the method have high-efficiency and economic, it is easy to operate, easy to spread the features such as.
Brief description of the drawings
Fig. 1 is that SF6 glow discharge fluorination treatments are carried out to epoxy resin disc insulator in one embodiment of the invention
Device circuit diagram；In figure：1.SF6 gas cylinders；2.SF6 gas concentration units；3. threeway converting interface；4. the vavuum pump of valve 5.；
6. observation window；7. vacuum meter；8. epoxy resin disc insulator；9. metal electrode；10. seal cavity；11. AC powers；12.
Ammeter.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the present invention, and without
It is of the invention in limiting.
In one embodiment, the invention discloses a kind of dress on use glow discharge fluorination treatment disc insulator surface
Put, it is characterised in that described device includes：Seal cavity, vavuum pump, electrode and SF6Gas cylinder；
The seal cavity, vavuum pump and SF6Gas cylinder is connected by threeway converting interface；
The vavuum pump is used to carry out vacuumize process to seal cavity；
The SF6Gas cylinder is used to be filled with SF to seal cavity6Gas；
The electrode is located in seal cavity.
The present embodiment is by low pressure SF6Glow discharge is produced in seal cavity, using glow discharge plasma to basin
Formula insulator surface carries out fluorination treatment, and discharge current is small, and voltage magnitude is low, and disc insulator is not damaged, and can be
The edge flashing voltage for greatly improving disc insulator interior in short-term, has the advantages that easy to operate, safe and efficient, with low cost
The present embodiment can at low pressure produce SF6Glow discharge plasma, is carried out at fluorination to insulator surface
Reason；The discovery when the disc insulator after to treatment carries out subsequent experimental, its flashover voltage is significantly improved, and insulating properties are obtained
To improvement, thus the device have high-efficiency and economic, it is easy to operate, easy to spread the features such as.
In one embodiment, the electrode includes high-field electrode and low-field electrode；The disc insulator is located at high pressure
Between electrode and low-field electrode.
In the present embodiment, in electric field disc insulator being placed between two electrodes, to produce glow discharge, fluorine is carried out
Change is processed.
In one embodiment, described device also includes vacuum meter, and the vacuum meter is used to measure in seal cavity
Air pressure.
In the present embodiment, the effect of the vacuum meter is the gas pressure intensity in accurate measurement seal cavity.
In one embodiment, the seal cavity is made of metal material, and the seal cavity includes upper lower flange,
The upper lower flange is fastened by secure component；The seal cavity side is provided with observation window, and the observation window is used to observe gas
Seal cavity inner case during body glow discharge.
In the present embodiment, be made the material of the seal cavity including stainless steel, iron etc. other suitable metals.It is described
The secure component part that other can be fastened to upper lower flange including screw, bolt etc..The upper lower flange of the cavity is suitable
In the lid up and down of seal cavity, play sealing, other test cavities etc. of transferring, in the experiment of this fluorination treatment, play annular seal space
The effect of body.
In one embodiment, described device also includes recovery unit, the recovery unit, seal cavity and SF6Gas
Bottle is connected by threeway converting interface；The retracting device is used to reclaim the SF in seal cavity6Waste gas.
In the present embodiment, it is convenient device to be vacuumized, SF6 gases is filled, is reclaimed SF6 gas using threeway converting interface
Multiple operations such as body are without changing tracheae or adapter, it is only necessary to control the switch of each air valve, save the time, convenient
Operation.
In one embodiment, the SF6Valve is provided between gas cylinder, vavuum pump and recovery unit and threeway connector
Door.
In the present embodiment, the valve is used to control SF6The switch of gas cylinder, vavuum pump and recovery unit, is needing back
Receive SF6During gas, SF is closed6The valve of gas cylinder, vavuum pump, opens the valve of recovery unit, you can reclaim SF6Gas, it is necessary to its
When he operates, respective valves are opened or closed.
In one embodiment, described device also includes AC power and ammeter, the AC power series current
It is connected with high-low pressure electrode after table.
In the present embodiment, the AC power carries out glow discharge process to disc insulator, it positive and negative electrode it
Between AC field is provided so that there is glow discharge at low pressure in disc insulator.The effect of the ammeter is to measure back
Road electric current is SF6Glow discharge plasma size of current.
In one embodiment, the described method comprises the following steps：
S1, disc insulator is processed after, by disc insulator be arranged on seal cavity high-low pressure electrode between；
S2, seal cavity is vacuumized using vavuum pump, then to being filled with SF in seal cavity6Gas, closes SF6Gas cylinder
Valve, to electrode applied voltage；
S3, the amplitude of the applied voltage is adjusted to producing SF between electrode6Glow discharge plasma, and cause electric discharge electricity
Stream reaches 1-100mA, carries out the fluorination treatment of 1-10h to disc insulator surface using the plasma.
In the present embodiment, phase seal cavity is charged SF in the step S26When gas reaches 1-200pa, gas is closed
The valve of bottle；Apply power frequency DC voltage between two electrodes, the loop current that ammeter is measured is maintained at 1-100mA or so, from
And utilize SF between electrode6Glow discharge plasma carries out the fluorination treatment of 1-10h or so to insulator surface.After treatment,
Cut-out voltage, the SF in seal cavity is reclaimed using retracting device6Waste gas, taking out surface has carried out the benzvalene form insulation of fluorination treatment
Son.
Method described in the present embodiment can at low pressure produce SF6Glow discharge plasma, to insulator surface
Carry out fluorination treatment；The discovery when the disc insulator after to treatment carries out subsequent experimental, its flashover voltage is significantly improved,
Insulating properties are improved, thus the method have high-efficiency and economic, it is easy to operate, easy to spread the features such as.
In one embodiment, carrying out treatment to disc insulator in the step S1 includes：By insulator surface wine
Smart wiped clean, toasts 30min to 3h with 40-80 DEG C of constant temperature in a vacuum.
In the present embodiment, test product carried out needing to wipe before fluorination treatment, dried, remove the dirt on disc insulator surface
It is dirty, prevent these filths to glow discharge in itself and the composition of fluorinated layer has adverse effect on.
In one embodiment, air pressure in seal cavity is evacuated to seal cavity using vavuum pump in the step S2
It is down to 10-2Below Pa.
In the present embodiment, because fluorination treatment needs to be carried out in hypobaric SF6 gases, before SF6 gases are filled with,
Needs vacuumize seal cavity, prevent foreign gas from remaining；As for by air pressure near 10-2Pa is the following is total by test of many times
Bear what is come.
In one embodiment, a kind of method that surface fluorination treatment is carried out to epoxy resin disc insulator is disclosed,
The SF of 1-200Pa is wherein filled with airtight cavity6Gas, applies power frequency DC voltage between two electrodes, what ammeter was measured returns
Road electric current is maintained at 1-100mA or so, so that using SF between electrode6Glow discharge plasma carries out 1- to insulator surface
The fluorination treatment of 10h or so.
The embodiment is comprised the following steps that：
S1. by epoxy resin disc insulator surface alcohol, silk wiped clean, in a vacuum with 40-80 DEG C of constant temperature
Baking 30min to 3h.
S2. disc insulator is taken out, is placed in seal cavity, be carefully fixed between high-low pressure metal electrode, and adjust
Electrode spacing so that two electrodes and disc insulator are in close contact, and gapless is present.
S3. cavity is sealed, open vavuum pump valve, seal cavity is vacuumized using vavuum pump, to cavity in air pressure
It is down to 10-2Below Pa, closes vavuum pump valve；Open SF6Gas cylinder valve, slowly to being filled with pure SF in cavity6To air pressure
It is operating air pressure, closes SF6Gas cylinder valve.
S4. alternating voltage is applied to electrode, regulation voltage magnitude produces glow discharge between causing electrode, and utilizes galvanometer
Measuring loop current value, under certain size of current, using glow discharge plasma treatment insulating materials for a period of time.
In one embodiment, as shown in Figure 1：Electrode (9) and epoxy resin disc insulator (8) are fixed on sealing
In cavity (10)；AC power (11) series electrical flow table (12) are connected on electrode two ends；Seal cavity carries observation window (6), is easy to
Inside cavity situation during gas glow discharge under observation low pressure；(7) it is vacuum meter, for detecting the air pressure in seal cavity；
SF6Gas cylinder (1)/retracting device (2) and vavuum pump (5) are connected by a valve (4) with seal cavity inside respectively；(3) it is
Threeway converting interface.
The merely exemplary explanation principle of the invention of above-described embodiment and its effect, preferred embodiment do not have detailed descriptionthe institute
Some details, it is only described specific embodiment that the invention is not limited yet.For a person skilled in the art, do not disobeying
Carry on the back under spirit and scope of the invention, any equivalent transformation based on the basis of technical solution of the present invention, it is simple replace etc. it is aobvious and
The change being clear to, belongs within the scope of the present invention.
Claims (9)
1. a kind of device on use glow discharge fluorination treatment disc insulator surface, it is characterised in that described device includes：It is close
Envelope cavity, vavuum pump, electrode and SF6Gas cylinder；
The seal cavity, vavuum pump and SF6Gas cylinder is connected by threeway converting interface；
The vavuum pump is used to carry out vacuumize process to seal cavity；
The SF6Gas cylinder is used to be filled with SF to seal cavity6Gas；
The electrode is located in seal cavity；
Described device also includes vacuum meter, and the vacuum meter is used to measure the air pressure in seal cavity；
The seal cavity includes upper lower flange, and the upper lower flange is fastened by secure component；Open the seal cavity side
There are observation window, the situation when observation window is used to observe gas glow discharge inside seal cavity.
2. device according to claim 1, it is characterised in that：The electrode includes high-field electrode and low-field electrode；It is described
Disc insulator is located between high-field electrode and low-field electrode.
3. device according to claim 1, it is characterised in that：The seal cavity is made of metal material.
4. device according to claim 1, it is characterised in that：Described device also includes recovery unit, the recovery list
Unit, seal cavity and SF6Gas cylinder is connected by threeway converting interface；The retracting device is used to reclaim the SF in seal cavity6It is useless
Gas.
5. device according to claim 4, it is characterised in that：The SF6Gas cylinder, vavuum pump and recovery unit lead to three
Valve is provided between interface.
6. device according to claim 2, it is characterised in that：Described device also includes AC power and ammeter, institute
It is connected with high-field electrode, low-field electrode after stating AC power series electrical flow table.
7. a kind of method on utilization glow discharge fluorination treatment disc insulator surface, it is characterised in that methods described include with
Lower step：
S1, disc insulator is processed after, by disc insulator be arranged on the high-field electrode of seal cavity, low-field electrode it
Between, and adjusting electrode spacing so that two electrodes and disc insulator are in close contact, and gapless is present；
S2, seal cavity is vacuumized using vavuum pump, then to being filled with SF in seal cavity6When gas reaches 1-200pa, close
Close SF6The valve of gas cylinder, to high-field electrode, low-field electrode applied voltage；
S3, the amplitude of the applied voltage is adjusted to producing SF between high-field electrode and low-field electrode6Glow discharge plasma, and
So that discharge current reaches 1-100mA, the fluorination treatment of 1-10h is carried out to disc insulator surface using the plasma.
8. method according to claim 7, it is characterised in that treatment bag is carried out to disc insulator in the step S1
Include：Insulator surface is clean with alcohol wipe, 30min to 3h is toasted with 40-80 DEG C of constant temperature in a vacuum.
9. method according to claim 7, it is characterised in that：Seal cavity is taken out very using vavuum pump in the step S2
Sky to air pressure in seal cavity is down to 10-2Below Pa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610325824.5A CN105913984B (en) | 2016-05-17 | 2016-05-17 | A kind of apparatus and method on use glow discharge fluorination treatment disc insulator surface |
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|---|---|---|---|
| CN201610325824.5A CN105913984B (en) | 2016-05-17 | 2016-05-17 | A kind of apparatus and method on use glow discharge fluorination treatment disc insulator surface |
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| CN105913984A CN105913984A (en) | 2016-08-31 |
| CN105913984B true CN105913984B (en) | 2017-06-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108281243B (en) * | 2018-01-29 | 2020-10-30 | 中国科学院电工研究所 | Device and method for treating surface of micro-stack structure insulating material by discharge plasma |
| CN108565081A (en) * | 2018-04-04 | 2018-09-21 | 西安交通大学 | A method of for improving solid dielectric insulation vacuum edge flashing performance |
| CN108896797B (en) * | 2018-06-12 | 2023-10-27 | 沈阳工业大学 | Insulator flashover back surface current measuring device and control method thereof |
| CN109004571B (en) * | 2018-07-26 | 2020-08-25 | 广西金德泰电气有限公司 | Gas-insulated closed compact metal-enclosed switch |
| CN110153847B (en) * | 2019-03-18 | 2021-06-01 | 华北电力大学 | Method for improving insulating property of insulator, insulator and polishing equipment thereof |
| CN110108990A (en) * | 2019-05-10 | 2019-08-09 | 沈阳工业大学 | A kind of experimental rig and method for environmental-protective gas-insulating performance study |
| CN110739109A (en) * | 2019-10-10 | 2020-01-31 | 华北电力大学 | Increase C4F7System and method for electrical strength of insulator surface in N gas |
| CN114236328B (en) * | 2021-11-29 | 2022-08-26 | 广东电网有限责任公司电力科学研究院 | Method for judging flashover discharge initial position along surface of basin-type insulator |
| CN115589660A (en) * | 2022-10-19 | 2023-01-10 | 国网安徽省电力有限公司马鞍山供电公司 | Insulating material surface treatment device and method of microwave fluorocarbon plasma jet |
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| US20060122560A1 (en) * | 2004-12-07 | 2006-06-08 | Robert Burgmeier | Medical devices and processes for preparing same |
| CN103280280B (en) * | 2013-04-25 | 2016-09-21 | 西北核技术研究所 | A kind of method improving polymer insulator vacuum edge flashing performance |
| CN104768316A (en) * | 2015-04-21 | 2015-07-08 | 南京苏曼等离子科技有限公司 | Large-discharge-interval normal temperature glow discharge low-temperature plasma material processing device |
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