CN109830348A - A kind of high voltage direct current disc insulator fast industrialization surface conductivity processing method - Google Patents
A kind of high voltage direct current disc insulator fast industrialization surface conductivity processing method Download PDFInfo
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- CN109830348A CN109830348A CN201910087800.4A CN201910087800A CN109830348A CN 109830348 A CN109830348 A CN 109830348A CN 201910087800 A CN201910087800 A CN 201910087800A CN 109830348 A CN109830348 A CN 109830348A
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- direct current
- disc insulator
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Abstract
The present invention discloses a kind of high voltage direct current disc insulator fast industrialization surface conductivity processing method, tetraethyl orthosilicate TEOS mixed gas is ionized into out plasma in plasma jet pipe, it sprays to direct current disc insulator surface, the surface deposition for forming different-thickness, obtains the high voltage direct current disc insulator of different surfaces conductivity.High voltage direct current disc insulator is surface-treated, the surface conductance of processing position is increased, surface field is homogenized, significantly improves the insulation performance of epoxide resin material.
Description
Technical field
The invention belongs to high voltage installation insulation preparation fields, and it is quickly industrial to be related to a kind of high voltage direct current disc insulator
Change surface conductivity processing method.
Background technique
In recent years, with electric system high voltage, the growth requirement of large capacity transmission, gas-insulated metal enclosed switchgear is set
Standby (GIS) and gas-insulated metal closed power transmission line (GIL) are excellent because its transmission capacity is big, occupied area is small, reliability is high etc.
Point has obtained extensive concern and application.Wherein, disc insulator not only plays the role of mechanical support, but also as electric insulation
Body plays conclusive key effect to the safe and stable operation of entire GIS, GIL.However, even if harsh in quality ±
In 800kV direct-current ultra high voltage engineering, epoxy casting class insulator remains unchanged Frequent Troubles.
It is generally believed that GIS/GIL longtime running is at a dc voltage, disc insulator surface can be in high pressure guide rod and ground connection
A large amount of charge is gathered under great field strength between metal shell, causes disc insulator serious along the local field strength distortion in face,
To increase the probability of edge flashing generation.Disc insulator is surface-treated, changes surface conductivity, facilitates surface
The dissipation of charge reduces charge accumulation, reduces electric field distortion degree, thus the generation for inhibiting edge flashing to discharge.
And the surface treatment method for high voltage direct current disc insulator existing at present operates relative complex, operating environment
It is relatively harsh, it is difficult to realize and industrialize quick large-scale surface modification.It is exhausted that plasma jet is applied to high pressure benzvalene form
Edge sublist face is modified, has many advantages, such as that easy to operate, easily controllable, short processing time, processing accuracy are high, is fast industrialization
Surface treatment provides completely new method.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of high voltage direct current disc insulator is quickly industrial
Change surface conductivity processing method.Surface modification treatment is carried out to insulator by plasma jet, and then improves high straightening
The insulation performance of disc insulator is flowed, the safety of operation stability and electric system is improved.
In order to achieve the above-mentioned object of the invention, the present invention is the following technical schemes are provided: a kind of high voltage direct current benzvalene form is exhausted by the present invention
Edge fast industrialization surface conductivity processing method, by tetraethyl orthosilicate TEOS mixed gas in plasma jet pipe
Plasma is ionized out, injection to direct current disc insulator surface forms the surface deposition of different-thickness, obtains different surfaces electricity
The high voltage direct current disc insulator of conductance, includes the following steps:
1) epoxy resin of glycidol ethers and curing agent are mixed according to mass ratio 3:1, uses magnetic agitation
Device stirs evenly；
2) epoxy resin mixing liquid is put into vacuum tank, is de-gassed 40~60min using aspiration pump.
3) the epoxy resin mixing liquid after degassing is poured into the mold for be coated with release agent and solidifies, is cooling, demoulds；
4) epoxy resin is handled using gradient temperature solidification method, and solidification process is divided into two steps:
First mold and base-material are heated to solidifying 4 hours at 70 DEG C, are then again heated to 130 DEG C and solidify 4 hours, it is completely solid
After change, epoxy resins insulation sample is can be obtained in cooling, demoulding；
5) double medium agent jet pipes use quartz glass tube as jet pipe main body, high-field electrode and ground electrode using needle ring electricity
Pole structure: using circular solids copper rod as internal high pressure electrode, and closely covers a quartz glass tube on the outside, uses copper foil
It is affixed on jet pipe outside end；
6) using plasma power supply is as driving source, the corona discharge repetition rate 30kHz, output voltage amplitude 6kV,
Electric current 200mA；
7) drexel bottle equipped with presoma TEOS liquid is heated under 60-80 DEG C of water-bath；
8) it 200sccm argon gas will be passed through in drexel bottle all the way, presoma TEOS molecule will be taken out of into jet pipe, and it is another
It after road 6slm argon gas is sufficiently mixed, is passed through in jet pipe, ionization forms plasma；
9) jet pipe is clamped using mechanical arm, accurately controls the angle and motion profile of jet pipe, to modified object epoxy
Resin carries out corona treatment；
10) carry out gradient design to epoxy resin: the type of two-dimensional gradient distribution is Monotone Type distribution.
The solid copper bar diameter 3mm, the quartz glass pipe outside diameter 4mm of the copper rod housing, the copper foil is apart from jet stream
Pipe end 1cm.
The plasma jet pipe is made of tube body and electrode, and the tube body is using quartz glass tube as tube body material
Material, the pipe diameter are 1cm, the tube length 15cm.
Beneficial effect
1. a pair high voltage direct current disc insulator is surface-treated, the surface conductance of processing position is increased, is homogenized surface
Electric field significantly improves the insulation performance of epoxide resin material.
2. make epoxy resin surface it is modified more quickly, it is accurate, convenient for operation, consequently facilitating being applied to industrial metaplasia
It produces.
Detailed description of the invention
Fig. 1 is plasma jet processing, in specimen surface deposition Si constituent content comparison.
Fig. 2 is that different plasma jet stream was handled under the time, the dissipation situation of surface charge.
Specific embodiment
Below by specific embodiments and the drawings, the present invention is further illustrated.The embodiment of the present invention is in order to more
So that those skilled in the art is more fully understood the present invention well, any limitation is not made to the present invention.
The purpose of the present invention is to provide a kind of high voltage direct current disc insulator fast industrialization surface conductivity processing sides
Method.In order to achieve the above-mentioned object of the invention, the present invention is the following technical schemes are provided: by tetraethyl orthosilicate (tetraethyl
Orthosilicate, TEOS) mixed gas ionizes out plasma in plasma jet pipe, it sprays exhausted to direct current benzvalene form
Edge sublist face forms the surface deposition of different-thickness.Obtain the high voltage direct current disc insulator of different surfaces conductivity.It is described
TEOS mixed gas is passed through in the TEOS liquid of certain temperature heating water bath and takes out of using certain flow argon gas as carrier gas
TEOS, afterwards with the argon gas of certain flow as excited gas.The plasma jet pipe is made of tube body and electrode, the pipe
For body using quartz glass tube as tube body material, the pipe diameter is 1cm, the tube length 15cm.
A kind of high voltage direct current disc insulator fast industrialization surface conductivity processing method, by tetraethyl orthosilicate TEOS
Mixed gas ionizes out plasma in plasma jet pipe, sprays to direct current disc insulator surface, forms different thickness
The surface of degree deposits, and obtains the high voltage direct current disc insulator of different surfaces conductivity, includes the following steps:
1) epoxy resin of glycidol ethers and curing agent are mixed according to mass ratio 3:1, uses magnetic agitation
Device stirs evenly；
2) epoxy resin mixing liquid is put into vacuum tank, is de-gassed 40~60min using aspiration pump.
3) the epoxy resin mixing liquid after degassing is poured into the mold for be coated with release agent and solidifies, is cooling, demoulds；
4) epoxy resin is handled using gradient temperature solidification method, and solidification process is divided into two steps:
First mold and base-material are heated to solidifying 4 hours at 70 DEG C, are then again heated to 130 DEG C and solidify 4 hours, it is completely solid
After change, epoxy resins insulation sample is can be obtained in cooling, demoulding；
5) double medium agent jet pipes use quartz glass tube as jet pipe main body, high-field electrode and ground electrode using needle ring electricity
Pole structure: using circular solids copper rod as internal high pressure electrode, and closely covers a quartz glass tube on the outside, uses copper foil
It is affixed on jet pipe outside end；The solid copper bar diameter 3mm, the quartz glass pipe outside diameter 4mm of the copper rod housing, the copper
Foil is apart from jet stream pipe end 1cm；
6) using plasma power supply is as driving source, the corona discharge repetition rate 30kHz, output voltage amplitude 6kV,
Electric current 200mA；
7) drexel bottle equipped with presoma TEOS liquid is heated under 60-80 DEG C of water-bath；
8) it 200sccm argon gas will be passed through in drexel bottle all the way, presoma TEOS molecule will be taken out of into jet pipe, and it is another
It after road 6slm argon gas is sufficiently mixed, is passed through in jet pipe, ionization forms plasma；
9) jet pipe is clamped using mechanical arm, accurately controls the angle and motion profile of jet pipe, to modified object epoxy
Resin carries out corona treatment；
10) carry out gradient design to epoxy resin: the type of two-dimensional gradient distribution is Monotone Type distribution.
Although the preferred embodiment of the present invention is described above, the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, is not restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very
Multi-form specific transformation, within these are all belonged to the scope of protection of the present invention.
Claims (3)
1. a kind of high voltage direct current disc insulator fast industrialization surface conductivity processing method, which is characterized in that by positive silicic acid
Tetra-ethyl ester TEOS mixed gas ionizes out plasma in plasma jet pipe, sprays to direct current disc insulator surface,
The surface deposition for forming different-thickness, obtains the high voltage direct current disc insulator of different surfaces conductivity, includes the following steps:
1) epoxy resin of glycidol ethers and curing agent are mixed according to mass ratio 3:1, is stirred using magnetic stirring apparatus
It mixes uniformly；
2) epoxy resin mixing liquid is put into vacuum tank, is de-gassed 40~60min using aspiration pump.
3) the epoxy resin mixing liquid after degassing is poured into the mold for be coated with release agent and solidifies, is cooling, demoulds；
4) epoxy resin is handled using gradient temperature solidification method, and solidification process is divided into two steps:
First mold and base-material are heated to solidifying 4 hours at 70 DEG C, are then again heated to 130 DEG C and solidify 4 hours, be fully cured
Afterwards, epoxy resins insulation sample can be obtained in cooling, demoulding；
5) double medium agent jet pipes use quartz glass tube to use needle ring electrode knot as jet pipe main body, high-field electrode and ground electrode
Structure: using circular solids copper rod as internal high pressure electrode, and closely covers a quartz glass tube on the outside, is affixed on using copper foil
Jet pipe outside end；
6) using plasma power supply is as driving source, corona discharge repetition rate 30kHz, output voltage amplitude 6kV, electric current
200mA；
7) drexel bottle equipped with presoma TEOS liquid is heated under 60-80 DEG C of water-bath；
8) it 200sccm argon gas will be passed through in drexel bottle, presoma TEOS molecule be taken out of into jet pipe, with another way all the way
It after 6slm argon gas is sufficiently mixed, is passed through in jet pipe, ionization forms plasma；
9) jet pipe is clamped using mechanical arm, accurately controls the angle and motion profile of jet pipe, to modified object epoxy resin
Carry out corona treatment；
10) carry out gradient design to epoxy resin: the type of two-dimensional gradient distribution is Monotone Type distribution.
2. a kind of high voltage direct current disc insulator fast industrialization surface conductivity processing method according to claim 1,
It is characterized in that, the solid copper bar diameter 3mm, the quartz glass pipe outside diameter 4mm of the copper rod housing, the copper foil distance are penetrated
Flow tube end 1cm.
3. a kind of high voltage direct current disc insulator fast industrialization surface conductivity processing method according to claim 1,
It is characterized in that, the plasma jet pipe is made of tube body and electrode, the tube body is using quartz glass tube as tube body
Material, the pipe diameter are 1cm, the tube length 15cm.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110331373A (en) * | 2019-07-04 | 2019-10-15 | 国家电网有限公司 | A kind of device and method for realizing the regulation of solid insulation surface conductivity |
| CN110828080A (en) * | 2019-11-18 | 2020-02-21 | 中国南方电网有限责任公司电网技术研究中心 | Method for surface modification treatment of insulator by plasma jet and application |
| CN110853848A (en) * | 2019-11-18 | 2020-02-28 | 天津大学 | Treatment method for improving insulator flashover voltage by atmospheric pressure plasma jet method |
| CN111261347A (en) * | 2020-01-21 | 2020-06-09 | 天津大学 | High-voltage direct-current basin-type insulator surface roughness functional gradient electric field homogenization method |
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| CN106132056A (en) * | 2016-07-01 | 2016-11-16 | 中国科学院电工研究所 | Plasma jet device and the method for suppression epoxy resin surface charge buildup |
| CN108320874A (en) * | 2018-03-16 | 2018-07-24 | 天津大学 | The method of inhibition GIS insulator surface charge accumulations based on linear gradient processing |
| CN108428523A (en) * | 2018-03-16 | 2018-08-21 | 天津大学 | GIS insulator design methods with the distribution of two-dimentional dielectric constant linear gradient |
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2019
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| CN106132056A (en) * | 2016-07-01 | 2016-11-16 | 中国科学院电工研究所 | Plasma jet device and the method for suppression epoxy resin surface charge buildup |
| CN108320874A (en) * | 2018-03-16 | 2018-07-24 | 天津大学 | The method of inhibition GIS insulator surface charge accumulations based on linear gradient processing |
| CN108428523A (en) * | 2018-03-16 | 2018-08-21 | 天津大学 | GIS insulator design methods with the distribution of two-dimentional dielectric constant linear gradient |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110331373A (en) * | 2019-07-04 | 2019-10-15 | 国家电网有限公司 | A kind of device and method for realizing the regulation of solid insulation surface conductivity |
| CN110828080A (en) * | 2019-11-18 | 2020-02-21 | 中国南方电网有限责任公司电网技术研究中心 | Method for surface modification treatment of insulator by plasma jet and application |
| CN110853848A (en) * | 2019-11-18 | 2020-02-28 | 天津大学 | Treatment method for improving insulator flashover voltage by atmospheric pressure plasma jet method |
| CN111261347A (en) * | 2020-01-21 | 2020-06-09 | 天津大学 | High-voltage direct-current basin-type insulator surface roughness functional gradient electric field homogenization method |
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