CN102024534B - Insulator with diamond protective layer and production method thereof - Google Patents
Insulator with diamond protective layer and production method thereof Download PDFInfo
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- CN102024534B CN102024534B CN 201010234297 CN201010234297A CN102024534B CN 102024534 B CN102024534 B CN 102024534B CN 201010234297 CN201010234297 CN 201010234297 CN 201010234297 A CN201010234297 A CN 201010234297A CN 102024534 B CN102024534 B CN 102024534B
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- overcoat
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Abstract
The invention discloses an insulator with a diamond protective layer and a production method thereof. The insulator comprises an insulator body, wherein the part on the outer surface of the insulator body, which is not contacted with an electric wire, is fully deposited with the diamond protective layer, and the thickness of the diamond protective layer is 60 nanometers to 1000 nanometers; and the method for producing the insulator with the diamond protective layer comprises the following steps of: firstly, shielding the part which is arranged on the outer surface of the insulator body and contacted with the electric wire; secondly, producing the diamond protective layer on the outer surface of the insulator body through chemical vapor deposition to obtain the insulator. The insulator provided by the invention has good anti-pollution performance and excellent ability to resist ultraviolet light, and plays an important role in reducing the occurrence of pollution flashover accidents.
Description
Technical field
The present invention relates to a kind of insulator and production method thereof, particularly a kind of insulator and production method thereof with diamond overcoat.
Background technology
Insulator is the indispensable part of power transmission and transforming equipment, it and development and national economy, and particularly development of electric power industry has close relationship.Along with the continuous increase of transmission line transmission capacity and the development of superhigh pressure technique, more and more higher to the requirement of insulator.Present porcelain and the glass insulator that uses, its performance can not satisfy operation power and security needs fully.Developed a kind of novel insulator-composite insulator in recent years.Composite insulator is made up of plug, umbrella disk and metal termination three parts.Wherein, plug is generally made by epoxy glass fiber rod fiberglass rod, and tensile strength very high (6-10 ton/square centimeter) is 2 times of steel, than the high 3-4 of porcelain times; Plug should bear pulling force, plays interior insulating effect again.Umbrella disk is that matrix adds other compositions with high molecular polymer such as politef, silicon rubber etc., makes through special process; The umbrella disk surface provides needed creepage distance for external insulation to insulator.The metal termination is used for being connected of lead shaft tower and insulator, according to the size of load loading capacity, can adopt material manufacturings such as forging cast iron, spheroidal graphite cast-iron or steel to form.
Composite insulator is so that volume is little, in light weight, intensity is high and clean the new generation product that distinct advantages such as easy to maintenance becomes ultra-high-tension power transmission line.The weight of extra-high voltage combined insulator only is 10% of porcelain insulating substring, even lighter, has significantly alleviated the iron tower burden, and can make conductor spacer, compresses the circuit corridor significantly, and it is long to shorten insulator string to greatest extent, reduces the iron tower size.
In actual applications, the filthy naturally material of insulator surface is easily fallen by rain-out, and industrial filthy material then is attached to insulator surface, is difficult for being fallen by rain-out.When air humidity is very high, with regard to conducting electricity leakage current is increased greatly, make insulator that serious flashover take place and damage, cause power outage.In addition, partial discharge also can take place at bad weather in the insulator surface in some filthy district, produces the pollution flashover that radio broadcast and radio communication is caused interference.
Cause the influencing factor of insulator surface filth, mainly contain following several: 1. air pollution; 2. birds droppings pollutes; 3. height above sea level; 4. icing or snowberg; 5. acid rain or acid mist; 6. creep distance insulate; 7. insulator string length; 8. thunder and lightning and operating voltage.
For insulation property and the antifouling property that improves insulator, need carry out finishing to insulator.Method commonly used at present is the coating that applies various unlike materials at insulator surface.Be in 200410073184.0 the Chinese patent application, to disclose a kind of insulator coating of forming with epoxy resin, aluminium hydroxide, the synthesizing aminated curing agent of modification, butyl glycidyl ether class diluent is carried out finishing to vacuum insulator method as application number; Application number is in 20051001852.9 the Chinese patent application, to disclose a kind of method of higfh-tension ceramics insulator or glass insulator being carried out finishing with titania colloidal solate.Hu Jingsong etc. disclose and have a kind ofly carried out the method for finishing with the electroceramics post insulator of RTV (the electroceramics post insulator that applies RTV is in the application study of ± 800kV ultra high voltage current conversion station, Hu Jingsong, Huang Xiaoming, repercussions, power construction, 2009,30 (1); Silicon rubber antifouling flush paint coating processes, Hao Wenguang, Peng Guirong, Li Qingshan, coatings industry, 2008,38 (03)).Along with the continuous increase of transmission line transmission capacity and the development of superhigh pressure technique, requirement to insulator is more and more higher, performance is worn in the anti-flashover of above-mentioned various insulators and resistance can not satisfy actual needs, demands developing the insulator of the good novel finishing of a kind of antifouling property urgently.
Summary of the invention
The purpose of this invention is to provide a kind of insulator and production method thereof with diamond overcoat.
Insulator provided by the invention comprises insulator body; Wherein, at the outer surface of described insulator body, except with the contacted part of electric wire, all deposit the diamond overcoat; The thickness of described diamond overcoat is the 60-1000 nanometer.
In the above-mentioned insulator, the thickness of overcoat can be any one in the following thickness, as 60-800 nanometer, 60-600 nanometer, 60-400 nanometer, 60-200 nanometer, 60-100 nanometer, 60-80 nanometer, 60-70 nanometer, 60-65 nanometer or 65-70 nanometer.
Insulator body is the insulator of existing any kind any structure, as can for by plug, be positioned at as described in mandrel outer umbrella disk and be positioned at as described in the metal termination of plug one or both ends composite insulator, glass insulator, ceramic insulator or the resin insulator etc. formed.
The above-mentioned method that has the insulator of diamond overcoat of production provided by the invention comprises the steps:
1) will shield with the contacted part of electric wire on the outer surface of insulator body;
2) on the outer surface of insulator body, chemical vapour deposition (CVD) one deck diamond overcoat obtains insulator provided by the invention.
The step 1) of described method is in order to prevent that insulator from being override by diamond layer in the subsequent chemistry vapor deposition step with the contacted part of electric wire in actual applications.The used screen method of this step is various screen methods commonly used.
Step 2) in, the thickness of diamond overcoat is the 60-1000 nanometer.In chemical vapour deposition (CVD) (Chemical vapordeposition, the be called for short CVD) step, used unstripped gas is selected from least a in the carbonaceous gass such as methane, coal gas, natural gas, oil gas, ethene and acetylene; Depositing temperature is room temperature, as can be 5-25 ℃, 10-25 ℃ or 15-30 ℃, deposition pressure is-10～30Pa, can be selected from the following number range any one :-10～1Pa ,-10～5Pa ,-10～10Pa, 1～5Pa, 1～10Pa, 1～30Pa, 5～10Pa, 5～30Pa and 10～30Pa, preferred 1～10Pa; Deposition rate is 3～6nm/min, is specially 3～5nm/min, 3～4nm/min, 4～6nm/min, 4～5nm/min, 5～6nm/min, 3nm/min, 4nm/min, 5nm/min or 6nm/min, preferred 3nm/min.After described chemical vapour deposition (CVD), dismountable step 1) gained shielding obtains described insulator.
Because diamond thin has very excellent physics and electrology characteristic, is 2000Wm as the chemical inertness thermal conductivity
-1K
-1(298K), hardness is 10000Kgmm
-2, coefficient of friction is 0.01-0.1, mass density is 3.515g/cm
3, dielectric constant is 5.5, resistivity is 10
16Ω/cm, puncture voltage is 3.5*10
16V/cm, surface tension is not less than 54 dyne/cm
2(din/cm) hydrophobicity is soaked into angle (dip angle) greater than 90 °, with its protective layer as insulator, can significantly improve antifouling property and the ageing resistace of insulator body.
Insulator with dlc protective layer provided by the invention has the following advantages: 1) have the dirty performance of good anti-soil.2) have excellent opposing ultraviolet ray ability, anti-corrosion damage does not play trace.3) anti-breakdown is strong.4) anti-ice-snow, cold air etc.Insulator with dlc protective layer provided by the invention is for the very important meaning that has that reduces pollution flashover accident.
Description of drawings
Fig. 1 is the stereoscan photograph of diamond overcoat in the insulator produced of the embodiment of the invention 1.
Fig. 2 is the stereoscan photograph of diamond overcoat in the insulator produced of the embodiment of the invention 2.
Fig. 3 is the stereoscan photograph of diamond overcoat in the insulator produced of the embodiment of the invention 3.
Fig. 4 is the stereoscan photograph of diamond overcoat in the insulator produced of the embodiment of the invention 4.
Embodiment
The invention will be further described below in conjunction with specific embodiment, but the present invention is not limited to following examples.If no special instructions, be conventional method in the following method.
Embodiment 1, production have the suspension type resin insulator of diamond overcoat
1) will shield with the contacted part of electric wire on the outer surface of suspension type resin insulator body;
2) on the outer surface with the insulator after the described step 1) shielding processing, chemical vapour deposition (CVD) one deck diamond overcoat is removed the described shielding of step 1), obtains insulator provided by the invention.In the chemical vapour deposition (CVD) step, depositing device is existing common chemical gaseous phase deposition stove, and raw materials used gas is methane; During deposition, earlier cvd furnace being evacuated to vacuum degree is 10
-1Pa opens the valve of argon gas and methane gas, and keeping the deposition pressure in the stove is 1Pa, begin to carry out chemical vapour deposition (CVD), deposition rate is 6nm/min, and depositing temperature is room temperature, deposit and stop after 10 minutes, namely the outside deposition at the composite insulator body obtains one deck diamond overcoat.The stereoscan photograph of this diamond overcoat as shown in Figure 1.After measured, the thickness of this overcoat is 60 nanometers.
According to following step the diamond overcoat is carried out the surface property test: the reative cell of 1, packing into; 2, vacuumize; 3, ventilation body; 4, add electric field; 5, reaction is 10-20 minute; 6, open air valve; 7, surface test is carried out in taking-up.The gained test result is as follows: pencil hardness＞3H; Soak into angle＞95 °; Surface tension＞54 dyne/cm; Waterproof, mildew-resistant one-level; Anti-resistance 10
13Ω/cm.
1) will shield with the contacted part of electric wire on the outer surface of glass insulator body;
2) on the outer surface with the insulator after the described step 1) shielding processing, chemical vapour deposition (CVD) one deck diamond overcoat is removed the described shielding of step 1), obtains insulator provided by the invention.In the chemical vapour deposition (CVD) step, depositing device is existing common chemical gaseous phase deposition stove, and raw materials used gas is natural gas; During deposition, earlier cvd furnace being evacuated to vacuum degree is 10
-1Pa opens the valve of argon gas and natural gas, and keeping the deposition pressure in the stove is 5Pa, begin to carry out chemical vapour deposition (CVD), deposition rate is 5nm/min, and depositing temperature is room temperature, deposit and stop after 12 minutes, namely the outside deposition at the composite insulator body obtains one deck diamond overcoat.The stereoscan photograph of this diamond overcoat as shown in Figure 2.After measured, the thickness of this overcoat is 60 nanometers.
According to following step the diamond overcoat is carried out the surface property test: the reative cell of 1, packing into; 2, vacuumize; 3, ventilation body; 4, add electric field; 5, reaction is 10-20 minute; 6, open air valve; 7, surface test is carried out in taking-up.The gained test result is as follows: hardness＞9; The mildew-resistant one-level; Surface tension 54 dyne/cm; Soak into angle＞100 °; Sheet resistance 10
16Ω/cm.
Embodiment 3, production have the ceramic insulator of diamond overcoat
1) will shield with the contacted part of electric wire on the outer surface of ceramic insulator body;
2) on the outer surface with the insulator after the described step 1) shielding processing, chemical vapour deposition (CVD) one deck diamond overcoat is removed the described shielding of step 1), obtains insulator provided by the invention.In the chemical vapour deposition (CVD) step, depositing device is existing common chemical gaseous phase deposition stove, and raw materials used gas is ethene; Earlier cvd furnace being evacuated to vacuum degree is 10
-1Pa opens the valve of argon gas and ethylene gas, and keeping the deposition pressure in the stove is 10Pa, begin to carry out chemical vapour deposition (CVD), deposition rate is 3nm/min, and depositing temperature is room temperature, deposit and stop after 20 minutes, namely the outside deposition at the ceramic insulator body obtains one deck diamond overcoat.The stereoscan photograph of this diamond overcoat as shown in Figure 3.After measured, the thickness of this overcoat is 66 nanometers.
According to following step the diamond overcoat is carried out the surface property test: the reative cell of 1, packing into; 2, vacuumize; 3, ventilation body; 4, add electric field; 5, reaction is 10-20 minute; 6, open air valve; 7, surface test is carried out in taking-up.The gained test result is as follows: hardness＞9; The mildew-resistant one-level; Surface tension 54 dyne/cm; Soak into angle＞100 °; Sheet resistance 10
16Ω/cm.
Embodiment 4, production have the hanging-type composite insulator of diamond overcoat
1) will shield with the contacted part of electric wire on the outer surface of hanging-type composite insulator body;
2) on the outer surface with the insulator after the described step 1) shielding processing, chemical vapour deposition (CVD) one deck diamond overcoat is removed the described shielding of step 1), obtains insulator provided by the invention.In the chemical vapour deposition (CVD) step, depositing device is existing common chemical gaseous phase deposition stove, and raw materials used gas is acetylene; During deposition, earlier cvd furnace being evacuated to vacuum degree is 10
-1Pa opens argon gas and acetylene valve, and keeping the deposition pressure in the stove is 30Pa, begin to carry out chemical vapour deposition (CVD), deposition rate is 4nm/min, and depositing temperature is room temperature, deposit and stop after 15 minutes, namely the outside deposition at the composite insulator body obtains one deck diamond overcoat.The stereoscan photograph of this diamond overcoat as shown in Figure 4.After measured, the thickness of this overcoat is 63 nanometers.
Embodiment 5, production have the needle type composite insulator of diamond overcoat
1) will shield with the contacted part of electric wire on the outer surface of needle type composite insulator body;
2) on the outer surface with the insulator after the described step 1) shielding processing, chemical vapour deposition (CVD) one deck diamond overcoat is removed the described shielding of step 1), obtains insulator provided by the invention.In the chemical vapour deposition (CVD) step, depositing device is existing common chemical gaseous phase deposition stove, and raw materials used gas is oil gas; During deposition, earlier cvd furnace being evacuated to vacuum degree is 10
-1Pa; open protection gas argon gas and petroleum gas storage tank valve; keep the deposition pressure in the stove to be-10Pa; begin to carry out chemical vapour deposition (CVD); deposition rate is 6nm/min; depositing temperature is room temperature, deposits to stop after 12 minutes, and namely the outside deposition at the composite insulator body obtains one deck diamond overcoat.
Claims (5)
1. an insulator comprises insulator body; It is characterized in that: at the outer surface of described insulator body, except with the contacted part of electric wire, all deposit the diamond overcoat; The thickness of described diamond overcoat is the 60-70 nanometer;
Described insulator is composite insulator, glass insulator, ceramic insulator or resin insulator;
The production method of described insulator comprises the steps:
1) will shield with the contacted part of electric wire on the outer surface of insulator body;
2) on the outer surface of insulator body, chemical vapour deposition (CVD) one deck diamond overcoat obtains described insulator;
Step 2) in, in the chemical vapour deposition (CVD) step, depositing temperature is room temperature, and deposition pressure is-10Pa～30Pa that deposition rate is 3～6nm/min.
2. a method of producing the described insulator of claim 1 comprises the steps:
1) will shield with the contacted part of electric wire on the outer surface of insulator body;
2) on the outer surface of insulator body, chemical vapour deposition (CVD) one deck diamond overcoat obtains the described insulator of claim 1;
Step 2) in, in the chemical vapour deposition (CVD) step, depositing temperature is room temperature, and deposition pressure is-10Pa～30Pa that deposition rate is 3～6nm/min.
3. method according to claim 2, it is characterized in that: described step 2), in the chemical vapour deposition (CVD) step, depositing temperature is room temperature, and deposition pressure is 1Pa～10Pa, and deposition rate is 3nm/min.
4. according to claim 2 or 3 described methods, it is characterized in that: described step 2), the used unstripped gas of chemical vapour deposition (CVD) step is selected from least a in methane, coal gas, natural gas, oil gas, ethene and the acetylene.
5. method according to claim 4 is characterized in that: described step 2), behind described chemical vapour deposition (CVD) one deck diamond overcoat, also carry out following processing: remove the described shielding of step 1), obtain the described insulator of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010234297 CN102024534B (en) | 2009-09-09 | 2010-07-20 | Insulator with diamond protective layer and production method thereof |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910091986.7 | 2009-09-09 | ||
| CN200910091986 | 2009-09-09 | ||
| CN 201010234297 CN102024534B (en) | 2009-09-09 | 2010-07-20 | Insulator with diamond protective layer and production method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102024534A CN102024534A (en) | 2011-04-20 |
| CN102024534B true CN102024534B (en) | 2013-07-10 |
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| CN105529118B (en) * | 2015-12-31 | 2017-11-07 | 青岛科技大学 | Application of many charcoal noncrystal membranes in high pressure resistant insulation material |
| CN107958874A (en) * | 2017-11-28 | 2018-04-24 | 合肥圣达电子科技实业有限公司 | Multilayer insulation, the press device and preparation method for being used to prepare multilayer insulation |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1284190C (en) * | 2004-10-22 | 2006-11-08 | 西安交通大学 | vacuum insulator coating capable of increasing flashover voltage and method of preparation thereof |
| CN1309684C (en) * | 2005-04-07 | 2007-04-11 | 福州大学 | Method for manufacturing anti pollution flashover high tension ceramic and glass insulators |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0424495A (en) * | 1990-05-21 | 1992-01-28 | Japan Steel Works Ltd:The | Composite insulating body and electromagnetic accelerator utilizing composite insulating body |
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2010
- 2010-07-20 CN CN 201010234297 patent/CN102024534B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1284190C (en) * | 2004-10-22 | 2006-11-08 | 西安交通大学 | vacuum insulator coating capable of increasing flashover voltage and method of preparation thereof |
| CN1309684C (en) * | 2005-04-07 | 2007-04-11 | 福州大学 | Method for manufacturing anti pollution flashover high tension ceramic and glass insulators |
Non-Patent Citations (1)
| Title |
|---|
| JP平4-24495A 1992.01.28 |
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