CN85101712B - High-tension synthetic insulator - Google Patents
High-tension synthetic insulator Download PDFInfo
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- CN85101712B CN85101712B CN85101712A CN85101712A CN85101712B CN 85101712 B CN85101712 B CN 85101712B CN 85101712 A CN85101712 A CN 85101712A CN 85101712 A CN85101712 A CN 85101712A CN 85101712 B CN85101712 B CN 85101712B
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- composite insulator
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Abstract
The present invention relates to a high-voltage synthetic insulator which is composed of an umbrella disk, a rod core and a metallic end head. The high-voltage synthetic insulator is provided with the end head with a novel structural style according to stress analysis and the characteristics of rod materials; the umbrella disk is made of synthetic insulating materials which is developed by the present invention and uses silicone rubber as base materials, and the tracking resistance and electrical erosion level is bigger than 6.0kv. The insulator is formed by bonding three parts by a new technological method; the present invention has the advantages of good mechanical performance, good discharge performance under the conditions of pollution and humidity, light weight, flexibility, etc., and is not easy to damage; the present invention can be singly manufactured in any grade, the temperature can not exceed 200 DEG C during manufacture, so the energy sources can be saved.
Description
The invention belongs to the seal that uses in " power transmission and transformation technology " field.
Because the capacity of power transmission and transformation increases day by day, voltage constantly raises, and the porcelain of life-time service and glass insulator are in mechanical property, and be electric, and particularly the discharge performance under the wet condition of dirt can not adapt to the needs of this development.
At present, a lot of in the world countries all adopt high molecular synthetic material and glass fiber reinforced plastics composite material to develop insulator.The major programme that proposes is: by the umbrella disk of macromolecular material, three kinds of parts of the excellent heart of matrix material and metal-ware are formed composite insulator after bonding, but the problem that needs to solve is:
1) umbrella disk: it is the external insulation of insulator, because of the high molecular synthetic material tolerable temperature not high, and umbrella disk is to be in for a long time under atmospheric condition and the voltage effect, therefore good anti-weather-aging property must be arranged, performance is decreased in anti-tracking and electrocorrosion, and certain elasticity is arranged adapting to the recoverable deformation of insulator under mechanical load, and easily processing etc.
2) the excellent heart: mainly be the parts that bear mechanical load, generally adopt matrix material epoxy Fiber glass rod to make, its tensile strength is than the high 3-4 of porcelain times, and the back performance can reduce but it makes moist.
3) metal termination is that composite insulator and shaft tower and lead link, and transmits the parts of mechanical load, must be firm when therefore connecting with excellent heartwood material, and can give full play to the high-intensity performance of bar and prevent that its outside surface is corroded.
The research of carrying out this respect abroad is more than 10 years, entered on probationly at present by experimental stage, obtained certain progress.[its materials used and structure diagram see Appendix 1,2,3,4]
1) umbrella disk aspect: umbrella plate material once adopted tetrafluoroethylene, though it has extremely good anti-weather-aging property, anti creepage trace and galvanic corrosion to decrease voltage levvl (can reach 6～7kv, being best in the macromolecular material [annex 4,5]), but its processing difficulties.What employing was more at present is cycloaliphatic epoxy resin (West Germany, Hungary), ethylene-propylene rubber(EPR) and silicon rubber (U.S.), but the anti creepage trace performance of these materials is generally lower, and silicon rubber is the highest to be no more than 4.0
Vk(annex 6).The leakage trace voltage levvl of the heat-shrinkable materials (radiation interlinkage) of U.S.'s Raychem place of matchmakers's production once can reach 6～7
Kv(, annex 5 suitable) with tetrafluoroethylene, but this material of import is tested, but less than 2.5
Kv(annex 7)
2) excellent heartwood material: mainly be to adopt the epoxy glass fiber rod, its quality is more excellent, better performances, but the problem that equally also exists the back performance of making moist to reduce.
3) connecting mode of metal termination and excellent heartwood material: because excellent heartwood material is the unidirectional fibre strongthener, its longitudinal strength is very high, and horizontal local crushing strength the and longitudinally shearing resistance of fiber is very low.Smooth outer surface is difficult for fastening, easy slip in addition, is difficult to reach the weight bearing power of specified requirement.For addressing this problem, the structure formation [annex 8] of many metal terminations has been proposed abroad.But adopting more at present is anti-cone-shaped structure [ annex 1,3,4], be about to excellent heartwood material two ends and cut the breach of certain-length, again the excellent heart is inserted in the fixed metal sleeve, squeezes into a metal wedge at breach place, excellent heart end then, the excellent heart is squeezed in the sleeve tightly and bears load.The advantage of this connecting mode is that structure processing is all simpler, it is bigger that bearing load also can reach, but its maximum shortcoming is the destroy integrity of excellent heartwood material, the intensity of material is reduced, and behind stand under load, rod heartwood material outwards can produce bigger initial rigid body slide displacement in the termination, reach certain initial tension load after, sliding just to tend to stablize stand under load, this has brought difficulty for the sealing of termination, overcome this drawback, sleeve will be extended, increase seal length to offset the initial sliding amount, or add tensile load in advance, its rigid body is slided disappear reach stablize stand under load after, again the termination is sealed, so just bring complicacy to assembling.
4) good anticorrosive measure is not taked in the metal termination, makes composite insulator be applied to can have any problem under the volts DS.
5) tackiness agent and packaging technology: composite insulator is formed after being processed respectively by three kinds of materials, and its umbrella disk also is to make singlely, is placed in respectively on the excellent heartwood material, therefore needs each parts bonding in aggregates with tackiness agent.Guarantee the quality of insulator, good tackiness agent and rational assemble method must be arranged.As in South Africa 220
KvThe composite insulator that circuit uses is because of the bonding bad accident several times that once occurred continuously.
Domestic development outdoor composite insulator promptly began at the beginning of the seventies, because single Resins, epoxy is only adopted in the restriction of material, because physical strength is not high, ageing-resistant performance was bad, and was easy to crack, so be eliminated at that time.There is minority unit carrying out the development of adopting two kinds of insulating material combinations to make the outdoor composite insulator in recent years.
Railway science institute has made 25
KvThe tunnel composite insulator, its excellent heartwood material is to adopt the alkyd resin Fiber glass rod, umbrella plate material once adopted tetrafluoroethylene, silicon rubber, fluorine material, the insulator of making at last are to adopt addition-type silicon rubber, and umbrella disk is that directly cover adds rod in the heart, the connecting mode of the metal termination and the excellent heart is to adopt external anti-cone structure, but has done improvement.In addition, units such as Huadong Electric Power Testing Inst. are also in the development of carrying out the outdoor high-tension synthetic insulator, and they adopt silicon rubber as umbrella plate material, and excellent heartwood material is to adopt epoxy glass cloth laminated board to be processed into bar.The useless starting material of this method consumption are more.
The present invention is exactly at above-mentioned situation, and to the material of composite insulator, structure and technology are studied and a kind of high-tension synthetic insulator of making.It is characterized in that:
1) umbrella plate material that uses of the present invention is to adopt China can mass-produced silicon rubber to add a large amount of hibbsites as base material to make filler, and adds suitable uv-absorbing agent, and its formulation weight per-cent is as follows:
Silicon rubber: 100 parts; Hibbsite: 50～300 parts;
Peroxidation tri-isopropyl benzene: 1～5 part; Three rodizations, two antimony: 1～30 part;
Titanium dioxide: 1～20 part; Methyl-silicone oil: 2～20 parts;
Ultraviolet absorbent uv-9 is an amount of.
Adopted hot milling technology simultaneously, making being furnished with does not need to use Banbury mixer when a large amount of hibbsites are filler.
What make in this way is that the insulating material of base material has electrical property preferably with silicon rubber, and its anti creepage trace and galvanic corrosion are decreased voltage levvl and reached greater than 6.0
Kv[annex 10], and kept the softness of silicon rubber, characteristics [seeing Appendix 11] such as flexible and Weather-resistant.Its processing is simple.Behind heat refining, be shaped with mould heat pressure, make single umbrella disk.
2) the present invention has extruded sheath in excellent heartwood material outside; the rod heart is to adopt homemade epoxy glass to draw group rod to make; in order to prevent at when operation moisture and the immersion of moisture; extrude silicone rubber jacket in excellent heartwood material outside; during assembling, this sheath stretches into the inside of metal termination with the sleeve of umbrella disk itself, after the assembling of metal termination is finished; the inner perfusion tackiness agent in the metal termination, this is in the protection excellent heartwood material fully.
3) the metal termination of the present invention's use is to adopt a kind of structure that is different from other metal terminations to form [seeing Appendix 8], and it has solved the problem that present domestic and international employed metal termination exists.
This structure can make termination and excellent heart connection place produce very big distribution pressure and frictional force, with the tension load of poising action on insulator, does not but damage excellent heartwood material, so it is stressed rationally, constructs tight etc.Particularly, can regulate fastening force automatically to the excellent heart along with the increase of tensioning load, its self-lock ability height, and do not damage excellent heartwood material, excellent heartwood material high-tensile is given full play to.When equipment closely after, under the rated load effect, can not produce slippage, be convenient to seal and keep sealing intact, it can satisfy the requirement of various high tonnage grades to end device, its structure assembling section such as Fig. 1, its parts are as shown in Figure 2.
This end device is by 45
#The outer sleeve (1) that highquality carbon steel or cast iron are made, screw thread screw thread draw ring (4) and A
3The inner conical drogue (2) that steel (or wrought iron or aluminium alloy) is made, the seal washer that silicon rubber or ordinary rubber are made four part suits such as (3) constitute.
After the whole machine-shaping of inner conical drogue, by central angle alpha=120 ° five equilibrium sleeve, open three parallel with sleeve axis, width is δ=1.5～2 millimeter perforation otch, and the small end E that is held by awl extends through big end (D) always, at the big end (D) of tapered sleeve, near the inner hole wall place, keep 1 * (1.5-2) millimeter thin layer, make the tapered sleeve that is divided into three locate to link and do not throw off, but keep inner conical drogue to be still the whole (see figure 3) that links of not exclusively separating at the awl big end of end (D).
Assembling process as shown in Figure 2, it is pressed certain-length with the excellent heart termination of insulator and inserts the upper edge of the A hole of outer sleeve to Gewindefreistiche C, again inner conical drogue (2) is sleeved on the caput, force in oil press or other machinery on the big end end ring cross section D of inner conical drogue, a caput insertion mouthful A who makes inner conical drogue small end port E wedging reach outer sleeve is close or flushes, again seal washer (3) is inserted in the groove of screw end B mouth of outer sleeve (1), screw on screw thread screw thread draw ring (4) then extremely to compressing seal washer (3), assembling promptly finishes.But it should be noted that when outer sleeve is inserted in excellent heart end, should make the sleeve of sheath and umbrella disk itself imbed the interior length of termination outer sleeve and be not less than 1.0 centimetres.
The termination of this structure formation is except that can be used for the present invention, also can be used for the connecting parts that the matrix material lengthening uses, and as the anchor clamps of the material-testing machine elastomeric compositions application of force, with the actual stretched mechanical breakdown point value [seeing Appendix 12] of the various different diameter bars of measuring matrix material.
4) use following tackiness agent with silicone rubber jacket and excellent heart storeroom between umbrella disk of the present invention and sheath:
Adopt general formula (R ' 0) between single umbrella disk and with the tackiness agent of sheath
aS
1(100R ")
b, a+b=4 in the formula, a, b is the positive integer of 1-4, R ' can be alkyl, aryl, allyl group, vinyl, R, and " can be alkyl, two or more mixture of aryl is made linking agent, and organo-tin compound solidifies the terminal hydroxy group siloxanes as promotor.
It is bonding to adopt vinyltriethoxysilane and tetrabutyl titanate lipoprotein mixture to carry out as primer between epoxy glass fiber rod and silicone rubber jacket, and the formulation weight per-cent of tackiness agent is as follows:
Terminal hydroxy group siloxanes: 100 parts;
Dimethoxy diacetoxy silane and two tert-butoxy silane mixtures: 1～4 part;
Dibutyl tin laurate: 0.05～5 part;
Treated 4
#White carbon black: 5～30 parts.
5) since the material of composite insulator make and assembling process in portion's residual air slit within it, being in operation causes the insulating electricity to wear out generations shelf depreciation and damages, so the present invention adopts following technological process:
At first excellent heartwood material is carried out vacuum-treat, its method is bar to be placed the container that fills (JHG-200J) low viscosity high-temperature silicon disulfide rubber carry out vacuum-treat, and vacuum tightness is 10
-2-10
-3Millimeter of mercury, time length is 30～120 minutes, when no bubble occurs, takes out the excellent heart and vulcanizes 1-2 hour under 110 °-140 ℃, extrude and the more excellent heart that extrudes sheath is carried out vacuum-treat in silicone oil after sheath is finished before assembling, vacuum tightness and time are with above-mentioned.
Extruding thickness on excellent heartwood material surface with tube extruding machine is that the silicone rubber jacket of 1-4 mm thick is not subjected to moisture content, the intrusion of moisture to protect excellent heartwood material.
Put on the excellent heartwood material that has sheath successively single umbrella disk and the fixed position, place it in then in the container, carry out vacuum-treat earlier, vacuum tightness is 10
-1-10
-3Mmhg, the time is 30-120 minute, it is mutual with 1-4 barometric point tackiness agent to be poured into umbrella disk and sheath and umbrella disk with air compressor again, fill to the top until tackiness agent, left standstill after the taking-up 72 hours, and made its curing, carry out the assembling of metal termination then.
6) for composite insulator metal termination not being corroded and can being applied under the volts DS, the present invention is at metal termination outside surface spraying salt tolerant, acid proof
#8401 coating add metal-powder so that the surface conductance of metal termination does not reduce in coating.
7) the present invention is carried additionally the metal ring that diameter is the 200-500 millimeter at its composite insulator two ends, distributes to improve along the voltage of insulator, deflects from hard arc simultaneously, and avoids umbrella disk and metal termination by scaling loss.
The high-tension synthetic insulator of making according to aforesaid method has:
1) physical strength height can be made the insulator of high tonnage load;
2) discharge performance under resistant wets is good, is easy to solve filthy geographic Insulation Problems;
3) under any voltage range, all can make single insulator, and can horizontally hang, will cause the significant innovation of shaft tower like this, thus the investment that can save transmission line construction;
4) its is in light weight, and has flexibility, installs for transportation and brings great convenience, has avoided loss;
Temperature is low when 5) making, and less than 200 ℃, therefore can save advantages such as a large amount of energy.
In the accompanying drawing 1: 0 is composite insulator body part sectioned view, and 1 is external conical sleeve, and 2 is inner conical drogue, and 3 is packing ring, and 4 is the tap fastening pulling ring.
In the accompanying drawing 2: 0 is the local figure of composite insulator itself, and 1 is outer sleeve, and 2 is inner conical drogue, and 3 is rubber cradle, and 4 is the tap fastening pulling ring.
Claims (13)
1, a kind of by umbrella disk, the composite insulator of three parts of the excellent heart and metal termination through being assembled into after bonding, it is characterized in that:
This umbrella plate material is the hibbsite by the silicon rubber escalated dose, makes through hot milling;
The structure of this metal termination is made by metal external conical sleeve and metal inner conical drogue, its metal inner conical drogue is ° to be divided into three perforation otch with certain width by central angle alpha=120, and keeps certain thickness thin layer in its larger diameter end near the inner hole wall place and it is connected with each other do not throw off;
This tackiness agent is added mixture of dimethoxy diacetoxy silane and two tert-butoxy diacetoxy silane etc. and forms by the terminal hydroxy group siloxanes.
2, composite insulator as claimed in claim 1 is characterized in that: the umbrella plate material system component weight percent of this composite insulator is:
Silicon rubber is than hibbsite=1: (0.5-3); Its hot milling temperature range is 80 ℃-180 ℃.
3, composite insulator as claimed in claim 1, the metal termination external conical sleeve that it is characterized in that this composite insulator is by 45
#Steel or cast iron are made, and inner conical drogue is by wrought iron or A, and steel or aluminium alloy are made, width δ=1.5～2 of described perforation otch millimeter, and the thickness of described thin layer is that 1 * (1.5～2) millimeter and whole metal termination outside surface have sprayed to ooze and closing metal-powder
#8401 coating.
4, composite insulator as claimed in claim 1 is characterized in that the adhesive formula composition weight percent of this composite insulator is:
The terminal hydroxy group siloxanes is than mixture=1 of dimethoxy diacetoxy silane and two tert-butoxy diacetoxy silane: (0.01～0.04).
5, a kind of processing method of making the described composite insulator of claim 1 is characterized in that:
This processing method is that excellent heartwood material is placed the container that fills (JHG-200J) low viscosity high-temperature silicon disulfide rubber, carry out sulfidizing then, the excellent heartwood material that will extrude sheath is again put into the container that fills silicone oil and is carried out the vacuum-treat second time, again umbrella disk be sleeved on the excellent heartwood material of sheath thereafter, then carry out vacuum-treat, use the high pressure pouring tackiness agent simultaneously.
6, the processing method of manufacturing composite insulator as claimed in claim 5 is characterized in that: described vacuum treated vacuum tightness is 10
-2～10
-3Millimeter of mercury, the time is 30～120 minutes.
7, as claim 5, the processing method of 6 described manufacturing composite insulators is characterized in that: the pressure of perfusion tackiness agent is 1-4 barometric point in the described tackiness agent adhesive bonding method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85101712A CN85101712B (en) | 1985-04-01 | 1985-04-01 | High-tension synthetic insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85101712A CN85101712B (en) | 1985-04-01 | 1985-04-01 | High-tension synthetic insulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85101712A CN85101712A (en) | 1986-09-17 |
| CN85101712B true CN85101712B (en) | 1988-06-29 |
Family
ID=4792009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85101712A Expired CN85101712B (en) | 1985-04-01 | 1985-04-01 | High-tension synthetic insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85101712B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3381035B2 (en) * | 1993-06-25 | 2003-02-24 | バンティコ アクチエンゲゼルシャフト | Method for producing a substantially hollow cylindrical casting and a substantially hollow cylindrical casting |
| US7002079B2 (en) * | 2003-08-14 | 2006-02-21 | Electric Power Research Institute | Indicators for early detection of potential failures due to water exposure of polymer-clad fiberglass |
-
1985
- 1985-04-01 CN CN85101712A patent/CN85101712B/en not_active Expired
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| Publication number | Publication date |
|---|---|
| CN85101712A (en) | 1986-09-17 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| CI01 | Correction of invention patent gazette |
Correct: Huang Wensong False: Huang Wengao Number: 18 Page: 62 Volume: 2 |
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| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ERR | Gazette correction |
Free format text: CORRECT FROM: HUANG WENHAO TO: HUANG WENSONG |
|
| IP01 | Partial invalidation of patent right |
Decision date of declaring invalidation: 19920328 Decision number of declaring invalidation: 216 |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |