CN105913984A - Device and method for processing surface of basin-type insulator by means of glow discharge fluorination - Google Patents
Device and method for processing surface of basin-type insulator by means of glow discharge fluorination Download PDFInfo
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- CN105913984A CN105913984A CN201610325824.5A CN201610325824A CN105913984A CN 105913984 A CN105913984 A CN 105913984A CN 201610325824 A CN201610325824 A CN 201610325824A CN 105913984 A CN105913984 A CN 105913984A
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- glow discharge
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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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Abstract
The invention discloses a device and a method for processing surfaces of a basin-type insulator by means of glow discharge fluorination. The method comprises the steps of: cleaning and drying the basin-type insulator, placing the basin-type insulator in a sealed cavity body, and connecting upper and lower parts of the basin-type insulator with two electrodes; vacuumizing the sealed cavity body by utilizing a vacuum pump, and filling the cavity body with low-pressure SF6 gas; and adjusting power-frequency voltage amplitude applied on the electrodes so as to produce glow discharge of the SF6 gas, utilizing a current meter for recording a current value of a loop, and utilizing plasma generated by the glow discharge for carrying out fluorination processing on the surface of the basin-type insulator for a period of time. The device and the method adopt the SF6 glow discharge plasma for carrying out fluorination processing on the surface of the basin-type insulator, the discharging current is small, the voltage amplitude is low, the basin-type insulator cannot be damaged, and the surface flashover voltage of the basin-type insulator can be greatly increased in a short time; and the device and the method have the advantages of being simple in operation, safe and efficient, low in cost and the like.
Description
Technical field
The invention belongs to SF6Metal enclosed switchgear (GIS) insulating protection field, particularly to the apparatus and method on a kind of glow discharge fluorination treatment disc insulator surface.
Background technology
SF6Metal enclosed switchgear (GIS) is internal with SF6Gas, as dielectric, has good insulating properties, is more extensively used in power system.In the connection bus of GIS, disc insulator plays isolation air chamber, supports the important function such as conductor and insulation, but owing to its surface breakdown field intensity is less than the gap breakdown field intensity under the same terms, also below the insulation daughter disruptive field intensity of same size, so disc insulator is the vulnerable area of GIS device insulation along face.It is true that the edge flashing phenomenon of disc insulator result in many GIS device faults, cause huge economic loss.
In engineering, the method improving disc insulator edge flashing voltage mainly has optimization insulator shape, face coat and increases bucking electrode etc..Although these methods can improve insulator edge flashing voltage, but is typically only capable to improve 20%～about 40%；Moreover, insulator may need to carry out secondary operations after forming, and manufacturing procedure is more complicated, can be greatly increased insulator manufacturing cost and cycle.
Summary of the invention
Based on this, the invention discloses a kind of device using glow discharge fluorination treatment disc insulator surface, described device includes: seal cavity, vacuum pump, electrode, SF6Gas cylinder；
Described sealing cavity, vacuum pump and SF6Gas cylinder is connected by threeway converting interface；
Described vacuum pump is for carrying out evacuation process to sealing cavity；
Described SF6Gas cylinder is for being filled with SF to sealing cavity6Gas；
Described electrode is positioned at annular seal space body.
The invention also discloses a kind of method utilizing glow discharge fluorination treatment disc insulator surface, it is characterised in that said method comprising the steps of:
S1, disc insulator is processed after, disc insulator is arranged on seal cavity high-low pressure electrode between；
S2, utilize vacuum pump to seal cavity evacuation, then in annular seal space body, be filled with SF6Gas, closes SF6The valve of gas cylinder, applies voltage to electrode；
Execute alive amplitude described in S3, regulation and produce SF between electrode6Glow discharge plasma, and make discharge current reach 1-100mA, utilize this plasma that disc insulator surface is carried out the fluorination treatment of 1-10h.
Apparatus and method provided by the present invention, can produce SF at low pressure6Glow discharge plasma, carries out fluorination treatment to insulator surface；The discovery when the disc insulator after processing carried out subsequent experimental, its flashover voltage is significantly improved, and insulating properties are improved, and therefore the method has high-efficiency and economic, the feature such as easy and simple to handle, easy to spread.
Accompanying drawing explanation
Fig. 1 is the device circuit diagram that epoxy resin disc insulator carries out in one embodiment of the invention SF6 glow discharge fluorination treatment；In figure: 1.SF6 gas cylinder；2.SF6 gas concentration unit；3. threeway converting interface；4. valve 5. vacuum pump；6. observation window；7. vacuometer；8. epoxy resin disc insulator；9. metal electrode；10. seal cavity；11. alternating current power supplys；12. ammeters.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, 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, is not intended to limit the present invention.
In one embodiment, the invention discloses a kind of device using glow discharge fluorination treatment disc insulator surface, it is characterised in that described device includes: seal cavity, vacuum pump, electrode and SF6Gas cylinder；
Described sealing cavity, vacuum pump and SF6Gas cylinder is connected by threeway converting interface；
Described vacuum pump is for carrying out evacuation process to sealing cavity；
Described SF6Gas cylinder is for being filled with SF to sealing cavity6Gas；
Described electrode is positioned at annular seal space body.
The present embodiment is by low pressure SF6Glow discharge is produced in annular seal space body, utilize glow discharge plasma that disc insulator surface is carried out fluorination treatment, discharge current is little, voltage magnitude is low, disc insulator is not damaged, and the edge flashing voltage of disc insulator can be greatly improved in short-term, there is the advantages such as easy and simple to handle, safe and efficient, with low cost
The present embodiment can produce SF at low pressure6Glow discharge plasma, carries out fluorination treatment to insulator surface；The discovery when the disc insulator after processing carried out subsequent experimental, its flashover voltage is significantly improved, and insulating properties are improved, and therefore this device has high-efficiency and economic, the feature such as easy and simple to handle, easy to spread.
In one embodiment, described electrode includes high-field electrode and low-field electrode；Described disc insulator is between high-field electrode and low-field electrode.
In the present embodiment, disc insulator is placed in the electric field between two electrodes, to produce glow discharge, carries out fluorination treatment.
In one embodiment, described device also includes vacuometer, and described vacuometer is for measuring the air pressure in annular seal space body.
In the present embodiment, the effect of described vacuometer is accurately to measure the gas pressure intensity in annular seal space body.
In one embodiment, described sealing cavity uses metal material to make, and described sealing cavity includes that lower flange, described upper lower flange are fastened by secure component；Described annular seal space body side surface has observation window, and described observation window seals inside cavity situation when being used for observing gas glow discharge.
In the present embodiment, the material making described sealing cavity includes other suitable metals such as rustless steel, ferrum.Described secure component includes other parts that can fasten upper lower flange such as screw, bolt.The upper lower flange of described cavity is equivalent to seal the lid up and down of cavity, plays the effect such as sealing, other test cavities of transferring, and in this fluorination treatment is tested, acts the effect sealing cavity.
In one embodiment, described device also includes recovery unit, described recovery unit, sealing cavity and SF6Gas cylinder is connected by threeway converting interface；Described retracting device is for reclaiming the SF in annular seal space body6Waste gas.
In the present embodiment, use threeway converting interface, conveniently device is carried out evacuation, fills multiple operations such as SF6 gas, recovery SF6 gas without changing trachea or adaptor, it is only necessary to control the switch of each air valve, save the time, facilitate operation.
In one embodiment, described SF6It is provided with valve between gas cylinder, vacuum pump and recovery unit and threeway connector.
In the present embodiment, described valve is used for controlling SF6The switch of gas cylinder, vacuum pump and recovery unit, reclaims SF at needs6During gas, close SF6Gas cylinder, the valve of vacuum pump, open the valve of recovery unit, the most recyclable SF6Gas, when needing other to operate, opens or closes respective valves.
In one embodiment, described device also includes alternating current power supply and ammeter, is connected with high-low pressure electrode after described alternating current power supply series current table.
In the present embodiment, described alternating current power supply carries out glow discharge process to disc insulator, and it provides AC field between positive and negative electrode so that disc insulator occurs glow discharge at low pressure.The effect of described ammeter is to measure loop current i.e. SF6Glow discharge plasma size of current.
In one embodiment, said method comprising the steps of:
S1, disc insulator is processed after, disc insulator is arranged on seal cavity high-low pressure electrode between；
S2, utilize vacuum pump to seal cavity evacuation, then in annular seal space body, be filled with SF6Gas, closes SF6The valve of gas cylinder, applies voltage to electrode；
Execute alive amplitude described in S3, regulation and produce SF between electrode6Glow discharge plasma, and make discharge current reach 1-100mA, utilize this plasma that disc insulator surface is carried out the fluorination treatment of 1-10h.
In the present embodiment, described step S2 seals cavity mutually and be charged SF6When gas reaches 1-200pa, close the valve of gas cylinder；Applying power frequency DC voltage between two electrodes, the loop current that ammeter records is maintained at about 1-100mA, thus utilizes SF between electrode6Glow discharge plasma carries out the fluorination treatment of about 1-10h to insulator surface.After process, cut off voltage, use retracting device to reclaim the SF in annular seal space body6Waste gas, takes out surface and has carried out the disc insulator of fluorination treatment.
Method described in the present embodiment can produce SF at low pressure6Glow discharge plasma, carries out fluorination treatment to insulator surface；The discovery when the disc insulator after processing carried out subsequent experimental, its flashover voltage is significantly improved, and insulating properties are improved, and therefore the method has high-efficiency and economic, the feature such as easy and simple to handle, easy to spread.
In one embodiment, described step S1 carries out process to disc insulator and includes: insulator surface alcohol wipe is clean, in a vacuum with 40-80 DEG C of constant temperature baking 30min to 3h.
In the present embodiment, before test product is carried out fluorination treatment, need wiping, drying, remove the filth on disc insulator surface, prevent these filths from the composition of glow discharge itself and fluorinated layer being had adverse effect on.
In one embodiment, described step S2 utilize vacuum pump to be down to 10 to sealing air pressure in cavity is evacuated to annular seal space body-2Below Pa.
In the present embodiment, because fluorination treatment needs to carry out in hypobaric SF6 gas, before being filled with SF6 gas, need, sealing cavity evacuation, to prevent foreign gas from remaining；As for by near for air pressure 10-2Pa the following is and sums up out by test of many times.
In one embodiment, disclose a kind of method that epoxy resin disc insulator is carried out surface fluorination process, airtight cavity is wherein filled with the SF of 1-200Pa6Gas, applies power frequency DC voltage between two electrodes, the loop current that ammeter records is maintained at about 1-100mA, thus utilizes SF between electrode6Glow discharge plasma carries out the fluorination treatment of about 1-10h to insulator surface.
Specifically comprising the following steps that of this embodiment
S1. by epoxy resin disc insulator surface ethanol, silk wiped clean, in a vacuum with 40-80 DEG C of constant temperature baking 30min to 3h.
S2. disc insulator is taken out, be placed in sealing cavity, be carefully fixed between high-low pressure metal electrode, and regulate electrode spacing so that two electrodes and disc insulator are in close contact, and gapless exists.
S3. cavity is sealed, open vacuum pump valve, utilize vacuum pump to sealing cavity evacuation, be down to 10 to cavity internal gas pressure-2Below Pa, closes vacuum pump valve；Open SF6Gas cylinder valve, is slowly filled with pure SF in cavity6It is operating air pressure to air pressure, closes SF6Gas cylinder valve.
S4. applying alternating voltage to electrode, regulation voltage magnitude makes to produce between electrode glow discharge, and utilizes amperometric measurement loop current value, under certain size of current, utilizes this glow discharge plasma to process insulant a period of time.
In one embodiment, as shown in Figure 1: electrode (9) and epoxy resin disc insulator (8) are fixed in sealing cavity (10)；Alternating current power supply (11) series current table (12) is connected on electrode two ends；Seal cavity with observation window (6), it is simple to inside cavity situation when observing gas glow discharge under low pressure；(7) it is vacuometer, is used for detecting the air pressure in annular seal space body；SF6Gas cylinder (1)/retracting device (2) is connected with sealing inside cavity by a valve (4) respectively with vacuum pump (5)；(3) it is threeway converting interface.
The principle of above-described embodiment merely exemplary explanation present invention and effect thereof, preferred embodiment does not has all of details of detailed descriptionthe, is not intended to the detailed description of the invention that this invention is only described yet.For a person skilled in the art, under the spirit and the scope of the present invention, any obviously change based on the equivalent transformation on the basis of technical solution of the present invention, simple replacement etc., within belonging to scope.
Claims (10)
1. use the device on glow discharge fluorination treatment disc insulator surface,
It is characterized in that, described device includes: seal cavity, vacuum pump, electrode and SF6
Gas cylinder；
Described sealing cavity, vacuum pump and SF6Gas cylinder is connected by threeway converting interface；
Described vacuum pump is for carrying out evacuation process to sealing cavity；
Described SF6Gas cylinder is for being filled with SF to sealing cavity6Gas；
Described electrode is positioned at annular seal space body.
Device the most according to claim 1, it is characterised in that: preferably,
Described electrode includes high-field electrode and low-field electrode；Described disc insulator is positioned at height
Between piezoelectricity pole and low-field electrode.
Device the most according to claim 1, it is characterised in that: described device
Also including vacuometer, described vacuometer is for measuring the air pressure in annular seal space body.
Device the most according to claim 1, it is characterised in that: described sealing
Cavity uses metal material to make, and described sealing cavity includes lower flange, described
Upper lower flange is fastened by secure component；Described annular seal space body side surface has observation
Window, seals the feelings of inside cavity when described observation window is for observing gas glow discharge
Condition.
Device the most according to claim 1, it is characterised in that: described device
Also include recovery unit, described recovery unit, sealing cavity and SF6Gas cylinder leads to
Cross threeway converting interface to be connected；Described retracting device is for reclaiming the SF in annular seal space body6
Waste gas.
Device the most according to claim 5, it is characterised in that: described SF6
It is provided with valve between gas cylinder, vacuum pump and recovery unit and threeway connector.
Device the most according to claim 2, it is characterised in that: described device
Also include alternating current power supply and ammeter, after described alternating current power supply series current table with
High-field electrode, low-field electrode are connected.
8. the method utilizing glow discharge fluorination treatment disc insulator surface,
It is characterized in that, said method comprising the steps of:
S1, disc insulator is processed after, disc insulator is arranged on close
Envelope is between the high-field electrode of cavity, low-field electrode；
S2, utilize vacuum pump to seal cavity evacuation, then in annular seal space body
It is filled with SF6Gas, closes SF6The valve of gas cylinder, to high-field electrode, low-field electrode
Apply voltage；
Alive amplitude is executed between high-field electrode and low-field electrode described in S3, regulation
Produce SF6Glow discharge plasma, and make discharge current reach 1-100mA,
Utilize this plasma that disc insulator surface is carried out the fluorination treatment of 1-10h.
Method the most according to claim 8, it is characterised in that described step
S1 carries out process to disc insulator include: by insulator surface alcohol wipe
Totally, in a vacuum with 40-80 DEG C of constant temperature baking 30min to 3h.
Method the most according to claim 8, it is characterised in that: described step
S2 utilize vacuum pump be down to sealing air pressure in cavity is evacuated to annular seal space body
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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| CN105913984B CN105913984B (en) | 2017-06-23 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281243A (en) * | 2018-01-29 | 2018-07-13 | 中国科学院电工研究所 | Discharge plasma handles the device and method on micro- laminating structure insulating materials surface |
| 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 |
| CN108896797A (en) * | 2018-06-12 | 2018-11-27 | 沈阳工业大学 | A kind of insulator arc-over rear surface current measuring device and its control method |
| CN109004571A (en) * | 2018-07-26 | 2018-12-14 | 广西金德泰电气有限公司 | A kind of compact metal enclosed switch of gas-insulated closing |
| 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 |
| CN110153847A (en) * | 2019-03-18 | 2019-08-23 | 华北电力大学 | For improving method, insulator and its grinding apparatus of insulator dielectric performance |
| 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 |
| CN114236328A (en) * | 2021-11-29 | 2022-03-25 | 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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| CN103280280A (en) * | 2013-04-25 | 2013-09-04 | 西北核技术研究所 | Method for improving flashover performance of vacuum edge surface of polymer insulator |
| 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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| US20060122560A1 (en) * | 2004-12-07 | 2006-06-08 | Robert Burgmeier | Medical devices and processes for preparing same |
| CN103280280A (en) * | 2013-04-25 | 2013-09-04 | 西北核技术研究所 | Method for improving flashover performance of vacuum edge surface of polymer insulator |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281243A (en) * | 2018-01-29 | 2018-07-13 | 中国科学院电工研究所 | Discharge plasma handles the device and method on micro- laminating structure insulating materials surface |
| 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 |
| CN108896797A (en) * | 2018-06-12 | 2018-11-27 | 沈阳工业大学 | A kind of insulator arc-over rear surface current measuring device and its control method |
| 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 |
| CN109004571A (en) * | 2018-07-26 | 2018-12-14 | 广西金德泰电气有限公司 | A kind of compact metal enclosed switch of gas-insulated closing |
| CN110153847A (en) * | 2019-03-18 | 2019-08-23 | 华北电力大学 | For improving method, insulator and its grinding apparatus of insulator dielectric performance |
| 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 |
| CN114236328A (en) * | 2021-11-29 | 2022-03-25 | 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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Granted publication date: 20170623 |