CN109754959A - Glue impregnated paper bushing with fiber-reinforced layer - Google Patents
Glue impregnated paper bushing with fiber-reinforced layer Download PDFInfo
- Publication number
- CN109754959A CN109754959A CN201910142019.2A CN201910142019A CN109754959A CN 109754959 A CN109754959 A CN 109754959A CN 201910142019 A CN201910142019 A CN 201910142019A CN 109754959 A CN109754959 A CN 109754959A
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- CN
- China
- Prior art keywords
- fiber
- impregnated paper
- reinforced layer
- glue impregnated
- glue
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003292 glue Substances 0.000 title claims abstract description 68
- 239000003990 capacitor Substances 0.000 claims abstract description 42
- 239000011347 resin Substances 0.000 claims abstract description 28
- 229920005989 resin Polymers 0.000 claims abstract description 28
- 238000009413 insulation Methods 0.000 claims abstract description 18
- 238000004804 winding Methods 0.000 claims abstract description 8
- 239000000835 fiber Substances 0.000 claims description 31
- 239000003365 glass fiber Substances 0.000 claims description 19
- 239000012209 synthetic fiber Substances 0.000 claims description 15
- 229920002994 synthetic fiber Polymers 0.000 claims description 15
- 239000000126 substance Substances 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 4
- 239000004753 textile Substances 0.000 claims description 4
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 3
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229920002379 silicone rubber Polymers 0.000 description 5
- 239000000945 filler Substances 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007598 dipping method Methods 0.000 description 3
- 238000002386 leaching Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000000017 hydrogel Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 244000137852 Petrea volubilis Species 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Abstract
Present invention relates particularly to a kind of glue impregnated paper bushing with fiber-reinforced layer, it is characterized by: directly winding the fiber-reinforced layer of varnished insulation resin outside glue impregnated paper capacitor core, the insulating resin of the insulating resin and glue impregnated paper capacitor core that impregnate fiber-reinforced layer is all epoxy-anhydride system, and fiber-reinforced layer winding is completed and is completely combined with glue impregnated paper capacitor core as an entirety after hot setting.The invention has the advantages that fiber-reinforced layer and glue impregnated paper capacitor core use same or similar insulating resin, it is all epoxy-anhydride system, thermal expansion coefficient is same or similar, the two is combined closely, any filling insulant is not needed therebetween, prevent bushing failure of insulation caused by expanding with heat and contract with cold because of filling insulant, improves the reliability of dry high voltage casing；Material can be saved simultaneously, reduce the manufacturing cost of glue impregnated paper bushing.
Description
Technical field
The invention belongs to technical field of high voltage, and in particular to one kind is applied to that substation is through walls or high voltage electric equipment
(such as transformer, switchgear etc.) passes through the glue impregnated paper bushing of shell.
Background technique
In the power system, high voltage current-carrying conductor is general across the wall of ground potential or the shell of high voltage electric equipment
Bushing will be used；The mainly capacitive bushing that the system of 35kV or more uses.
Current capacitive bushing is broadly divided into two major classes: paper oil insulation casing and dry insulation casing.Wherein do
Formula insulating sleeve according to the type of major insulation material and the different of manufacturing process be divided into again gluing paper bushing, resin impregnated paper bushing,
Film-insulated casing, glass reinforced plastic sleeve etc., wherein the research of glue impregnated paper bushing is compared with early, better performances, the larger, voltage of dosage etc.
Grade highest.
Resin impregnated paper bushing is to replace insulating paper with aluminium foil to be wound in capacitor core, then vacuum drying, vacuum pressure leaching
Glue, finally heated curing molding.In order to enable glue to be thoroughly impregnated insulating paper, the resin impregnated paper bushing produced at present is generally used
The higher crimped paper of porosity, and the crimped paper wound cannot be too close, it is necessary to it is loose.Using the glue leaching of such technique production
Paper bushing electric property is good, can be applied to super-pressure, extra-high voltage grade.
However, resin impregnated paper bushing also has the structural weak points of its own and obvious deficiency.Since crimped paper porosity is high, winding
Than more loose, therefore in finished product, fiber content is relatively low again, and resistance to mechanical weight bearing power is poor.Therefore, glue impregnated paper bushing
Force side generally will one load shell of outer surface cover of glue impregnated paper capacitor core, this load shell be usually insulator or
Glass fibre reinforced plastic insulating cylinder.When sleeve-assembled, a gap, this gap are had between glue impregnated paper capacitor core and glass fibre reinforced plastic insulating cylinder
It must fill to get up just to be able to satisfy electrical performance demands with insulating materials.There are commonly Silica hydrogels, foaming epoxy for insulation filler
Resin glue, silicone grease, special filling insulating paste etc..The thermal expansion coefficient and glue impregnated paper capacitor core of these different insulation fillers
And the thermal expansion coefficient of glass fibre reinforced plastic cylinder is different, some even differs greatly, therefore is easy in long-term use process because of heat expansion
Shrinkage causes insulation fault.There are mainly two types of the comprehensive fault types reported both at home and abroad, and one is cause to seal because expanding with heat and contract with cold
Failure, humidified insulation；Another kind is that cured filling insulant is removed to be formed with glass fibre reinforced plastic insulating cylinder because of coefficient of thermal expansion difference
Gap causes shelf depreciation.The problem of both types, finally all can cause inside pipe casing insulation breakdown to cause fault outage, sternly
The meeting of weight causes bushing explosion.
Summary of the invention
The invention aims to overcome the deficiencies of the prior art and provide a kind of glue impregnated paper high pressure with fiber-reinforced layer
Casing makes full use of the strong point of glue impregnated paper capacitor core excellent electrical properties, overcomes the shortcomings of that its resistance to mechanical weight bearing power is weak,
The fiber-reinforced layer that varnished insulation resin is directly wound outside glue impregnated paper capacitor core, impregnates the insulating resin and glue of fiber-reinforced layer
The insulating resin of impregnated paper capacitor core is all epoxy-anhydride system, and fiber-reinforced layer winding is completed and soaked after hot setting with glue
Paper capacitor fuse is completely combined as an entirety.
The present invention is achieved by the following technical solution:
A kind of glue impregnated paper bushing with fiber-reinforced layer, including glue impregnated paper capacitor core, it is characterised in that: glue leaching
Directly wind the fiber-reinforced layer of varnished insulation resin outside paper capacitor fuse, fiber used in fiber-reinforced layer for non-conductive fibre and by
Insulating resin dipping, the insulating resin of the insulating resin and glue impregnated paper capacitor core that impregnate fiber-reinforced layer is all epoxy-anhydride
System, fiber-reinforced layer winding are completed and become an entirety with glue impregnated paper capacitor core after hot setting.
Further, the bushing (such as bushing shell for transformer) for main stress at one end, fiber-reinforced layer winding
In one end of glue impregnated paper capacitor core.
Further, both ends are all born with the casing (such as wall bushing) of larger torque, fiber-reinforced layer is wrapped in
In the whole length of glue impregnated paper capacitor core.
Further, fiber used in fiber-reinforced layer of the invention is glass fibre, and form is glass fibre zero twisted yarn.
Further, fiber used in fiber-reinforced layer of the invention is glass fibre, and form is glass fiber textile cloth
Or/and glass fibre non-woven.
Further, fiber used in fiber-reinforced layer of the invention is glass fibre, and form is glass mat.
Further, fiber used in fiber-reinforced layer of the invention be chemical synthetic fiber, form be synthetic fibers without
Twist yarn.
Further, fiber used in fiber-reinforced layer of the invention is chemical synthetic fiber, and form is synthetic fibers spinning
Woven fabric or/and non-woven fabrics of synthetic fiber.
Further, fiber used in fiber-reinforced layer of the invention is chemical synthetic fiber, and form is synthetic fibers felt.
Chemical synthetic fiber of the invention is preferably but not limited to as polyester fiber or polypropylene fiber or aramid fiber etc..
The form of fiber used in fiber-reinforced layer of the invention is zero twisted yarn, textile cloth or non-woven fabrics, insulation felt etc., is owned
These material temperature classifications are both needed to reach 100 DEG C or more.
The present invention prepares the insulating resin of epoxy-anhydride system in production first, by the outer of glue impregnated paper capacitor core
The polishing of sand for surface paper is crude, and wiped clean is placed on wrapping machine.Thin layer is coated on the surface of glue impregnated paper capacitor core
Insulating resin, the rotation of glue impregnated paper capacitor core, non-conductive fibre are directly wound into after dipping insulating resin by a steeping vat
On glue impregnated paper capacitor core, the reciprocal multilayer that winds is until design thickness, later, on wrapping machine precuring to surface drying not gummosis,
Curing oven is then placed into completely to be solidified.After the completion of solidification, product surface is machined according to design requirement, shape
At the fiber-reinforced layer being fully integrated together with certain wall thickness and glue impregnated paper capacitor core, then on fiber-reinforced layer
The accessories such as bonding or integral die silicon rubber umbrella skirt and mounting flange, have just made the glue impregnated paper with fiber-reinforced layer
Bushing.
The present invention has the advantage that compared with prior art
Fiber-reinforced layer and glue impregnated paper capacitor core use same or similar insulating resin, are all epoxy-anhydride system,
Thermal expansion coefficient is same or similar, and the two is combined closely, and does not need any filling insulant therebetween, has prevented because filling insulant
Glue impregnated paper bushing failure of insulation, improves the reliability of dry high voltage casing caused by expanding with heat and contract with cold；Meanwhile it eliminating and filling out
Insulating layer is filled with the reduction of rear sleeve integral diameter, can be saved the material cost of silicon rubber umbrella skirt, flange etc., be considered further that removal is filled out
The cost and sealing fringe cost, the present invention for filling insulant itself can reduce glue impregnated paper bushing than prior art
Manufacturing cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of prior art resin impregnated paper bushing；
Fig. 2 is the structural schematic diagram under one end stress condition of the present invention；
Fig. 3 is the structural schematic diagram under both ends stress condition of the present invention；
In figure: 1. glue impregnated paper capacitor cores；2. glass fibre reinforced plastic insulating cylinder；3. filling insulant；4. silicon rubber umbrella skirt；5. method
It is blue；11. glue impregnated paper capacitor core；12. fiber-reinforced layer；13. silicon rubber umbrella skirt；14. flange.
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to technical solution of the present invention.Following embodiment is only used for
Clearly illustrate technical solution of the present invention, therefore be only used as example, and cannot be used as a limitation and limit protection model of the invention
It encloses.It should be noted that unless otherwise indicated, technical term or scientific term used in this application are should be belonging to the present invention
The ordinary meaning that field technical staff is understood.
As shown in Figure 1: when the resin impregnated paper bushing assembling of the prior art, glue impregnated paper capacitor core 1 and glass fibre reinforced plastic insulating cylinder 2 it
Between have a gap, this gap must fill get up just to be able to satisfy electrical performance demands with insulating materials.Insulation filler 3
There are commonly Silica hydrogel, foaming epoxy resin glue, silicone grease, special filling insulating pastes etc..The heat of these different insulation fillers
The coefficient of expansion is different from the thermal expansion coefficient of glue impregnated paper capacitor core 1 and glass fibre reinforced plastic cylinder 2, and some even differs greatly, therefore
It is easy to cause insulation fault because expanding with heat and contract with cold in long-term use process.
It is as shown in Figure 2: for the bushing (such as bushing shell for transformer) of main stress at one end, fiber-reinforced layer 12
One end of glue impregnated paper capacitor core 11 need to be wrapped in.
It is as shown in Figure 3: both ends all to be born with the casing (such as wall bushing) of larger torque, fiber-reinforced layer 12 needs
It is wrapped in the whole length of glue impregnated paper capacitor core 11.
Below a specific embodiment of the invention is described in detail for making the wall bushing of a 110kV.
It is as shown in Figure 3: to use polyester fiber as the non-conductive fibre of fiber-reinforced layer 12, specific form is polyester fiber
Zero twisted yarn, yarn width 20mm, thickness 0.5mm.
The glue impregnated paper capacitor core 11 of one 110kV of preparation is needed first, and prepares the insulation tree of epoxy-anhydride system
Rouge, the outer surface of glue impregnated paper capacitor core 11 is crude with sand paper polishing, and wiped clean is placed on wrapping machine.In glue impregnated paper
Thin layer insulating resin is coated on the surface of capacitor core 11, starts wrapping machine, and glue impregnated paper capacitor core 11 rotates, polyester fiber
Zero twisted yarn is directly wound on glue impregnated paper capacitor core 11 after dipping insulating resin by a steeping vat, from glue impregnated paper capacitor
The one ends wound of fuse 11 is back and forth wound to the other end, is measured diameter with caliber gauge and is calculated the thickness of winding, particular up to
Design thickness 10mm.Later, 100 DEG C of heating precuring are then placed into solid to surface drying not gummosis (about 1 hour) on wrapping machine
The program of 150 DEG C (4h) is fully cured -- 125 DEG C (2h) -- according to 100 DEG C (1h) of change furnace.It is right after solidification is completed and cooled down
Product surface carries out machining with lathe, guarantee fiber-reinforced layer 12 with a thickness of 8mm-8.5mm；Mounting flange 14；Then
It is bonded silicon rubber umbrella skirt 13,23, every end full skirt, indoor end and outdoor end dry arcing distance are 1020mm, outdoor end creep distance
4020mm, indoor end creep distance 3300mm.The accessories such as corona shielding cap, the connecting terminal of casing two ends, a brace are finally installed
There is the 110kV glue impregnated paper high-voltage wall bushing of fiber-reinforced layer to complete.
The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；Although referring to aforementioned each reality
Applying example, invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each
Technical solution documented by embodiment is modified, or equivalent substitution of some or all of the technical features；And
These are modified or replaceed, the range for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution,
It should all cover within the scope of the claims and the description of the invention.
Claims (9)
1. a kind of glue impregnated paper bushing with fiber-reinforced layer, including glue impregnated paper capacitor core (11), it is characterised in that: glue
Impregnated paper capacitor core (11) directly winds the fiber-reinforced layer (12) of varnished insulation resin, fiber used in fiber-reinforced layer (12) outside
It is impregnated for non-conductive fibre and by insulating resin, impregnates the insulating resin and glue impregnated paper capacitor core (11) of fiber-reinforced layer (12)
Insulating resin is all epoxy-anhydride system, fiber-reinforced layer (12) winding complete and after hot setting with glue impregnated paper capacitor core
(11) become an entirety.
2. the glue impregnated paper bushing according to claim 1 with fiber-reinforced layer, it is characterised in that fiber-reinforced layer
(12) it is wrapped in one end of glue impregnated paper capacitor core (11).
3. the glue impregnated paper bushing according to claim 1 with fiber-reinforced layer, it is characterised in that fiber-reinforced layer
(12) it is wrapped in the whole length of glue impregnated paper capacitor core (11).
4. the glue impregnated paper bushing according to claim 1 or 2 or 3 with fiber-reinforced layer, it is characterised in that fiber
Fiber used in enhancement layer (12) is glass fibre, and form is glass fibre zero twisted yarn.
5. the glue impregnated paper bushing according to claim 1 or 2 or 3 with fiber-reinforced layer, it is characterised in that fiber
Fiber used in enhancement layer (12) is glass fibre, and form is glass fiber textile cloth or/and glass fibre non-woven.
6. the glue impregnated paper bushing according to claim 1 or 2 or 3 with fiber-reinforced layer, it is characterised in that fiber
Fiber used in enhancement layer (12) is glass fibre, and form is glass mat.
7. the glue impregnated paper bushing according to claim 1 or 2 or 3 with fiber-reinforced layer, it is characterised in that fiber
Fiber used in enhancement layer (12) is chemical synthetic fiber, and form is synthetic fibers zero twisted yarn.
8. the glue impregnated paper bushing according to claim 1 or 2 or 3 with fiber-reinforced layer, it is characterised in that fiber
Fiber used in enhancement layer (12) is chemical synthetic fiber, and form is synthetic fibers textile cloth or/and non-woven fabrics of synthetic fiber.
9. the glue impregnated paper bushing according to claim 1 or 2 or 3 with fiber-reinforced layer, it is characterised in that fiber
Fiber used in enhancement layer (12) is chemical synthetic fiber, and form is synthetic fibers felt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910142019.2A CN109754959A (en) | 2019-02-26 | 2019-02-26 | Glue impregnated paper bushing with fiber-reinforced layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910142019.2A CN109754959A (en) | 2019-02-26 | 2019-02-26 | Glue impregnated paper bushing with fiber-reinforced layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109754959A true CN109754959A (en) | 2019-05-14 |
Family
ID=66407462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910142019.2A Pending CN109754959A (en) | 2019-02-26 | 2019-02-26 | Glue impregnated paper bushing with fiber-reinforced layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109754959A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112406237A (en) * | 2020-11-19 | 2021-02-26 | 太湖华强科技有限公司 | Organic insulating film |
| CN112530645A (en) * | 2020-12-19 | 2021-03-19 | 醴陵华鑫电瓷科技股份有限公司 | Hollow composite insulator |
| CN112908582A (en) * | 2021-01-28 | 2021-06-04 | 西安交通大学 | High-pressure dry type valve side sleeve |
| CN113125918A (en) * | 2021-04-14 | 2021-07-16 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Preparation method of sample wafer for testing insulation performance of capacitor core of epoxy glue impregnated paper sleeve |
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