CN201270183Y - Insulation voltage equalizing tube used for ultra-high-voltage or extra-high-voltage transformers - Google Patents
Insulation voltage equalizing tube used for ultra-high-voltage or extra-high-voltage transformers Download PDFInfo
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- CN201270183Y CN201270183Y CNU200820131322XU CN200820131322U CN201270183Y CN 201270183 Y CN201270183 Y CN 201270183Y CN U200820131322X U CNU200820131322X U CN U200820131322XU CN 200820131322 U CN200820131322 U CN 200820131322U CN 201270183 Y CN201270183 Y CN 201270183Y
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- insulating paper
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- inner barrel
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Abstract
The utility model discloses an insulating balance tube for high-voltage or extra-high-voltage transformers, the insulating balance tube is provided with a balance tube, a pure insulation paper covering casing, a pure insulation paper inner ring brace, a pure insulation paper inner barrel body, a pure insulation paper outer ring brace and a pure insulation paper outer barrel body, wherein the pure insulation paper covering casing is tightly covered on the outer wall of the balance tube, the pure insulation paper inner barrel body is sleeved outside the pure insulation paper covering casing, and the pure insulation paper outer barrel body is further sleeved outside the pure insulation paper inner barrel body. The insulating balance tube largely increases the insulating use filed strength of a transformer, shortens outlet insulation distance of sleeve tubes of the transformer, removes hidden troubles that the transformer product discharges partially, increases operation reliability of the transformer, prolongs the service life of the transformer, and simultaneously fills the blank of production of domestic insulating balance tubes.
Description
Technical field
The utility model relates to a kind of transformer insulated parts, relates in particular to a kind of insulation balance pipe that is used for superhigh pressure or extra-high voltage transformer.
Background technology
The rated voltage of EHV transformer product is 350kV to 500kV, and the rated voltage of extra-high voltage transformer is all at 750kV with more than the 750kV.Because the operating voltage of this class transformer is very high, so some positions in transformer inside, lead-in wire position as coil, its Electric Field Distribution is very inhomogeneous, corona discharge appears in the field intensity allowable that tends to surpass owing to local work field intensity insulating material (oil-impregnated paper insulation) itself, reduce the transformer reliability of operation, shorten the working life of transformer.Need be placed with metal tube (being commonly called as balance pipe) for this reason in its position that goes between, lead-in wire Electric Field Distribution on every side is tending towards evenly, and require on the surface of balance pipe, to be coated with certain thickness insulating barrier, improve its dielectric strength effectively than larger radius of curvature.
The material of balance pipe is copper or aluminium, usually all be to be fixed on the balance pipe and the formation insulant according to the mode of half-stack package with banded crimped paper adding additives in the manufacturing works of transformer, effective insulation thickness of the insulant of this structure only is half of actual (real) thickness, and can make transformer oil varnish(ed) paper effectively, thereby influence insulation effect with adhesive bond.Also can there be air gap in the insulant of this structure in insulant inside, makes the electrical strength that covers insulation reduce widely.Pretend under the usefulness at high-tension yard, partial discharge can occur, can not satisfy the specification requirement of superhigh pressure and extra-high voltage transformer product.
The utility model content
The purpose of this utility model is to overcome the problems referred to above, the insulation balance pipe that provides a kind of insulation property to can be used for superhigh pressure or extra-high voltage transformer preferably.
The technical scheme that realizes the utility model purpose is: a kind of insulation balance pipe that is used for superhigh pressure or extra-high voltage transformer has balance pipe, pure insulating paper cover housing, pure insulating paper inner ring stay, pure insulating paper inner barrel, pure insulating paper outer ring stay and pure insulating paper outer cylinder body; Balance pipe has the bend pipe between two sections straight tubes and the two sections straight tubes; Pure insulating paper cover housing closely covers on the outer wall of balance pipe, and pure insulating paper inner barrel is enclosed within outside the pure insulating paper cover housing, pure insulating paper outer cylinder body is enclosed within again outside the pure insulating paper inner barrel; Each pure insulating paper inner ring stay is arranged between pure insulating paper cover housing and the pure insulating paper inner barrel, the inward end surface of each pure insulating paper inner ring stay is bonded and fixed at pure insulating paper cover housing, and the end face outwardly of each pure insulating paper inner ring stay is bonded and fixed at pure insulating paper inner barrel; Each pure insulating paper outer ring stay is arranged between pure insulating paper inner barrel and the pure insulating paper outer cylinder body, the inward end surface of each pure insulating paper outer ring stay is bonded and fixed at pure insulating paper inner barrel, and the end face outwardly of each pure insulating paper outer ring stay is bonded and fixed at pure insulating paper outer cylinder body; Pure insulating paper inner ring stay has 4 or 8, pure insulating paper inner barrel comprises that 2 cross sections are half cylindrical shell of semi-annular shape, these 2 half cylindrical shells are overlapped mutually to be bonded and fixed at by binding agent by separately inclined-plane overlapping part and constitute pure insulating paper inner barrel together, and each overlapping part in two overlapping parts of two and half cylindrical shells is bonded and fixed at two end faces outwardly that are in a corresponding pure insulating paper inner ring stay of two pure insulating paper inner ring stays on the same diameter; Pure insulating paper outer ring stay has 4 or 8, pure insulating paper outer cylinder body comprises that 2 cross sections are half cylindrical shell of semi-annular shape, these 2 half cylindrical shells are overlapped mutually to be bonded and fixed at by binding agent by separately inclined-plane overlapping part and constitute pure insulating paper outer cylinder body together, and each overlapping part in two overlapping parts of two and half cylindrical shells is bonded and fixed at two end faces outwardly that are in a corresponding pure insulating paper outer ring stay of two pure insulating paper outer ring stays on the same diameter.
Insulation balance pipe of the present utility model also has pure insulating paper dihedral ring; Pure insulating paper dihedral ring is bonded and fixed at an end of pure insulating paper cover housing.
The utlity model has positive effect: the insulation balance pipe of the utility model manufacturing has improved transformer insulated use field intensity widely, shortened the insulation distance of bushing shell for transformer outlet, eliminated the hidden danger of power transformer product generation partial discharge, improve the transformer reliability of operation, prolonged the working life of transformer.Fill up the blank that domestic insulation balance pipe is produced simultaneously.
Description of drawings
Fig. 1 is the structural representation of insulation balance pipe of the present utility model;
Fig. 2 is the A-A view of Fig. 1;
Fig. 3 is that the manufacturing equipment of the paste pure pulp of the adhesive in the insulation balance pipe manufacture process of the present utility model connects block diagram.
Embodiment
See Fig. 1 and Fig. 2, the insulation balance pipe that is used for superhigh pressure or extra-high voltage transformer of the present utility model has balance pipe 61, pure insulating paper cover housing 62, pure insulating paper inner ring stay 71, pure insulating paper inner barrel 72, pure insulating paper outer ring stay 73 and pure insulating paper outer cylinder body 74.Balance pipe 61 has the bend pipe between two sections straight tubes and the two sections straight tubes.
Pure insulating paper cover housing 62 closely covers on the outer wall of balance pipe 61, and pure insulating paper inner barrel 72 is enclosed within outside the pure insulating paper cover housing 6, pure insulating paper outer cylinder body 74 is enclosed within again outside the pure insulating paper inner barrel 72.Each pure insulating paper inner ring stay 71 is arranged between pure insulating paper cover housing 62 and the pure insulating paper inner barrel 72, the inward end surface of each pure insulating paper inner ring stay 71 is bonded and fixed at pure insulating paper cover housing 62, and the end face outwardly of each pure insulating paper inner ring stay 71 is bonded and fixed at pure insulating paper inner barrel 72.Each pure insulating paper outer ring stay 73 is arranged between pure insulating paper inner barrel 72 and the pure insulating paper outer cylinder body 74, the inward end surface of each pure insulating paper outer ring stay 73 is bonded and fixed at pure insulating paper inner barrel 72, and the end face outwardly of each pure insulating paper outer ring stay 73 is bonded and fixed at pure insulating paper outer cylinder body 74.
Pure insulating paper inner ring stay 71 has 4, and is distributed between pure insulating paper cover housing 62 and the pure insulating paper inner barrel 72; Pure insulating paper inner barrel 72 comprises that 2 cross sections are half cylindrical shell 72-1, the 72-2 of semi-annular shape, these 2 half cylindrical shell 72-1,72-2 overlap each overlapping part that is bonded and fixed in two overlapping parts that constitute pure insulating paper inner barrel 72, two half cylindrical shell 72-1,72-2 together mutually by separately inclined-plane overlapping part and are bonded and fixed at two end faces outwardly that are in a corresponding pure insulating paper inner ring stay 71 of two pure insulating paper inner ring stays 71 on the same diameter by binding agent.Pure insulating paper outer ring stay 73 has 4, and is distributed between pure insulating paper inner barrel 72 and the pure insulating paper outer cylinder body 74.Pure insulating paper outer cylinder body 74 comprises that 2 cross sections are half cylindrical shell 74-1, the 74-2 of semi-annular shape, these 2 half cylindrical shell 74-1,74-2 overlap each overlapping part that is bonded and fixed in two overlapping parts that constitute pure insulating paper outer cylinder body 74, two half cylindrical shell 74-1,74-2 together mutually by separately inclined-plane overlapping part and are bonded and fixed at two end faces outwardly that are in a corresponding pure insulating paper outer ring stay 73 of two pure insulating paper outer ring stays 73 on the same diameter by binding agent.
Insulation balance pipe of the present utility model also has pure insulating paper dihedral ring 63, and pure insulating paper dihedral ring 63 is bonded and fixed at an end of pure insulating paper cover housing 62.
The manufacture method of the insulation balance pipe that is used for superhigh pressure or extra-high voltage transformer of the present utility model is as follows:
See Fig. 3,1. do not float kp softwood pulp and water is put into hydrabrusher 11 with tabular, under agitation tabular floating after being ground into slurries, kp softwood pulp do not pumped in the reserve pit 12 by first stock pump 51 by waterpower, by second stock pump 52 slurries in the reserve pit 12 are pumped in the scummer 13 and to remove the gred, slurries after the slagging-off enter in two disc pulping machines 14 that series connection is used before and after three subsequently, and the solubility that is milled to the fiber in the slurries by two disc pulping machines 14 is to enter machine chest 15 after 34%～37%.Slurries in the machine chest 15 are pumped into by the 3rd stock pump 53 carry out slurries in the stuff box 21 and stir, simultaneously water is added the concentration that makes slurries in the stuff box 21 and be diluted to 2.5 ‰～5 ‰.By the 4th stock pump 54 slurries in the stuff box 21 are pumped in the sand trap 22, carry out the sand setting of slurries by triangular prism shaped stopper wherein, and the iron and steel particle in the slurries is attracted on powerful permanent magnet and from slurries, separate by powerful permanent magnet, enter with rear slurry and under the effect of gravity, carry out the desanding second time in the desander 23; After slurries flow out from desander 23, under the effect of gravity, enter in the branch slurry case 23.To make the concentration of slurries be diluted to 1.8 ‰～2.2 ‰ in the water adding branch slurry case 24.Slurries in minute slurry case 24 are pumped in the gunite gun of cylinder whitewashing former 31 by the 5th stock pump 55, slurries are sprayed onto the adhesive paste paper pulp that forms thin layer on the netted shaping drum by its shower nozzle by gunite gun.The felt band of adhesive paste paper forming device 32 is fitted on the netted shaping drum it by pressure roller in rotation, transfers on the felt band from the adhesive paste paper pulp that will stick to the thin layer on the netted shaping drum rotation.Along with the motion of felt band then is delivered to the cooling cylinder assembly with the adhesive paste paper pulp of thin layer, and be wound onto on the cylinder body of cooling cylinder assembly.When the thin layer adhesive paste paper pulp on being wound on cylinder body reached certain thickness, the cooling cylinder assembly was cut off this adhesive paste paper pulp from the inside to the outside by its cutter, thereby obtained adhesive paste pulp board.Adhesive paste pulp board drops to picking on the platform of the machine of picking 33.From picking that platform takes off or being adhesive paste pure pulp from picking the adhesive paste pulp board that platform falls.
2. the paste pure pulp that 1. obtains with step is that raw material makes insulation pure paper plate, the pure paper plate that will insulate obtains sheet material through opening material, cementing is superimposed with each other to desired thickness again, leaves standstill back hot pressing, leaves standstill on sheet material, composite board is carried out machine work and obtains the pure insulating paper inner ring stay 71 and the pure insulating paper outer ring stay 73 of required form.
3. it is stand-by as internal mold to get balance pipe 61; Balance pipe 61 has the bend pipe between two sections straight tubes and the two sections straight tubes.
4. aluminum or the copper housing got with balance pipe 61 respective shapes are interior die housing, and interior die housing is provided with two openings, and should in have flowing water aperture when vacuumizing on the wall of die housing, the area of all apertures accounts for 3 ‰ to 1% of internal mold inner walls area; An opening of interior die housing is sealed,, open vacuum pump airtight connection of another opening and vacuum-pumping pipeline of interior die housing; Interior die housing is bedabbled, outer wall wrapping internal layer overcover around interior die housing, the paste pure pulp that 1. step is obtained cover the internal layer overcover outer, carry out repeatedly manual the beating simultaneously, make it to become as requested certain shape in a part of moisture content of air between eliminating paste pure pulp and internal layer overcover and eliminating paste pure pulp inside, become wet plate shape pure pulp and make except that the paste pure pulp, then the elasticity binding strap is tied up outside wet plate shape pure pulp, continued to vacuumize and remove a part of moisture content in the wet plate shape pure pulp; Pull down the elasticity binding strap and check, continue to dewater, and further improve the uniformity coefficient of wet plate shape pure pulp by manual mode of patting repeatedly; For the second time the elasticity binding strap is tied up outside wet plate shape pure pulp then, continued to vacuumize and a period of time of dewatering; Interior die housing is pulled down from vacuum extractor together with wet plate shape pure pulp and elasticity binding strap, be put into and under 60 ℃ to 105 ℃ temperature, carry out drying in the drying equipment and slough moisture content, wet plate shape pure pulp then becomes pure insulating paper spare, places health then until dimensionally stable; Pull down the elasticity binding strap then, pure insulating paper spare is severed become two with cutting tool, and be separated with interior die housing, one of them half cylindrical shell is first available half cylindrical shell, to it through stand-by after machine finishing; It is stand-by to make corresponding second half cylindrical shell according to the similar method of making first half cylindrical shell; When making this two and half cylindrical shell, the paste pure pulp is being patted in the process of shaping, to need with the requirement that must touch the mark of the thickness of part, after carrying out fine finishining, the cross section of two and half cylindrical shell 72-1,72-2 all is semi-annular shape and is equipped with the inclined-plane overlapping part, and the inclined-plane overlapping part of two and half cylindrical shell 72-1,72-2 is corresponding; This two and half cylindrical shell 72-1,72-2 are used to form pure insulating paper inner barrel 72.
5. according to the 4. identical method of step, it is stand-by to make the two and half cylindrical shell 74-1, the 74-2 that are used to form pure insulating paper outer cylinder body 74, just in the diameter of die housing greater than the diameter of step used interior die housing in 4..
6. clean out and be placed on balance pipe 61 on the workbench, then mould is bedabbled, the paste pure pulp that 1. step obtains is spread deposited covering on the outer surface of balance pipe 61, pat repeatedly then, after removing a part of moisture content of paste pure pulp and make it to become wet plate shape pure pulp, use the elasticity binding strap that the colligation of wet plate shape pure pulp is good subsequently, place after a period of time removes a part of moisture content, pulling down the elasticity binding strap continues to pat repeatedly, bind the elasticity binding strap again, continue to place after a period of time removes a part of moisture content, put into drying equipment and carry out drying and slough moisture content under 60 ℃ to 105 ℃ temperature, wet plate shape pure pulp then becomes the pure insulating paper cover housing 62 that closely covers on balance pipe 61 outer surfaces.
7. get 714 or 8 of the pure insulating paper inner ring stays that 2. step obtain, inward end surface and end face outwardly at each pure insulating paper inner ring stay 71 are all coated binding agent, then each pure insulating paper inner ring stay 71 symmetry is bonded on the outer surface of the pure insulating paper cover housing 62 that 6. step obtain, two and the half cylindrical shell 72-1 that more 4. step obtained, 72-2 and corresponding pure insulating paper inner ring stay 71 end face outwardly are bonding, wherein: two and half cylindrical shell 72-1, each overlapping part in two inclined-plane overlapping parts of 72-2 is bonded and fixed at two end faces outwardly that are in a corresponding pure insulating paper inner ring stay 71 of two pure insulating paper inner ring stays 71 on the same diameter, and two and half cylindrical shell 72-1, the 72-2 also inclined-plane overlapping part by separately is bonded and fixed at and constitutes pure insulating paper inner barrel 72 together.
8. get the pure insulating paper outer ring stay 73 that 2. step obtains, its radical is identical with the radical of pure insulating paper inner ring stay 71, inward end surface and end face outwardly at each pure insulating paper outer ring stay 73 are all coated binding agent, then each pure insulating paper outer ring stay 73 symmetry is bonded on the outer surface of the pure insulating paper cover housing 62 that 6. step obtain, and corresponding with the bonding position of pure insulating paper inner ring stay 71; Two and half cylindrical shell 74-1,74-2 that more 5. step is obtained and corresponding pure insulating paper outer ring stay 73 end face outwardly are bonding, wherein: each overlapping part in two inclined-plane overlapping parts of two and half cylindrical shell 74-1,74-2 is bonded and fixed at two end faces outwardly that are in a corresponding pure insulating paper outer ring stay 73 of two pure insulating paper outer ring stays 73 on the same diameter, and two and half cylindrical shell 74-1,74-2 also the inclined-plane overlapping part by separately be bonded and fixed at and constitute pure insulating paper outer cylinder body 74 together.
9. tie up the back with the elasticity binding strap around pure insulating paper outer cylinder body 74 and place, up to the binding agent full solidification.
10. after pulling down the elasticity binding strap, then obtain the balance pipe that insulate; The balance pipe that should insulate then obtains finished product after sending the X-ray check machine testing not have metal particle.
Claims (2)
1, a kind of insulation balance pipe that is used for superhigh pressure or extra-high voltage transformer has balance pipe (61); It is characterized in that: also have pure insulating paper cover housing (62), pure insulating paper inner ring stay (71), pure insulating paper inner barrel (72), pure insulating paper outer ring stay (73) and pure insulating paper outer cylinder body (74); Balance pipe (61) has the bend pipe between two sections straight tubes and the two sections straight tubes; Pure insulating paper cover housing (62) closely covers on the outer wall of balance pipe (61), and pure insulating paper inner barrel (72) is enclosed within outside the pure insulating paper cover housing (6), pure insulating paper outer cylinder body (74) is enclosed within again outside the pure insulating paper inner barrel (72); Each pure insulating paper inner ring stay (71) is arranged between pure insulating paper cover housing (62) and the pure insulating paper inner barrel (72), the inward end surface of each pure insulating paper inner ring stay (71) is bonded and fixed at pure insulating paper cover housing (62), and the end face outwardly of each pure insulating paper inner ring stay (71) is bonded and fixed at pure insulating paper inner barrel (72); Each pure insulating paper outer ring stay (73) is arranged between pure insulating paper inner barrel (72) and the pure insulating paper outer cylinder body (74), the inward end surface of each pure insulating paper outer ring stay (73) is bonded and fixed at pure insulating paper inner barrel (72), and the end face outwardly of each pure insulating paper outer ring stay (73) is bonded and fixed at pure insulating paper outer cylinder body (74); Pure insulating paper inner ring stay (71) has 4 or 8, pure insulating paper inner barrel (72) comprises that 2 cross sections are half cylindrical shell (72-1 of semi-annular shape, 72-2), these 2 half cylindrical shell (72-1,72-2) overlap mutually to be bonded and fixed at by binding agent by separately inclined-plane overlapping part and constitute pure insulating paper inner barrel (72) together, two and half cylindrical shell (72-1, each overlapping part in two overlapping parts 72-2) is bonded and fixed at two end faces outwardly that are in a corresponding pure insulating paper inner ring stay (71) of two the pure insulating paper inner ring stays (71) on the same diameter; Pure insulating paper outer ring stay (73) has 4 or 8, pure insulating paper outer cylinder body (74) comprises that 2 cross sections are half cylindrical shell (74-1 of semi-annular shape, 74-2), these 2 half cylindrical shell (74-1,74-2) overlap mutually to be bonded and fixed at by binding agent by separately inclined-plane overlapping part and constitute pure insulating paper outer cylinder body (74) together, two and half cylindrical shell (74-1, each overlapping part in two overlapping parts 74-2) is bonded and fixed at two end faces outwardly that are in a corresponding pure insulating paper outer ring stay (73) of two the pure insulating paper outer ring stays (73) on the same diameter.
2, a kind of insulation balance pipe that is used for superhigh pressure or extra-high voltage transformer according to claim 1 is characterized in that: also have pure insulating paper dihedral ring (63); Pure insulating paper dihedral ring (63) is bonded and fixed at an end of pure insulating paper cover housing (62).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820131322XU CN201270183Y (en) | 2008-05-07 | 2008-07-28 | Insulation voltage equalizing tube used for ultra-high-voltage or extra-high-voltage transformers |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820035261.7 | 2008-05-07 | ||
| CN200820035261 | 2008-05-07 | ||
| CNU200820131322XU CN201270183Y (en) | 2008-05-07 | 2008-07-28 | Insulation voltage equalizing tube used for ultra-high-voltage or extra-high-voltage transformers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201270183Y true CN201270183Y (en) | 2009-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820131322XU Expired - Lifetime CN201270183Y (en) | 2008-05-07 | 2008-07-28 | Insulation voltage equalizing tube used for ultra-high-voltage or extra-high-voltage transformers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201270183Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609265A (en) * | 2016-03-01 | 2016-05-25 | 泰州新源电工器材有限公司 | Alternating current transformer wire-outlet apparatus |
-
2008
- 2008-07-28 CN CNU200820131322XU patent/CN201270183Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609265A (en) * | 2016-03-01 | 2016-05-25 | 泰州新源电工器材有限公司 | Alternating current transformer wire-outlet apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170420 Address after: 213000 Jiangsu Province, the clock tower Development Zone, Changzhou Road, No. 385 Co-patentee after: China Electric Power Research Institute Patentee after: Changzhou Yingzhong Electrical Co., Ltd. Address before: 213012 Changzhou, Jiangsu Province, the new road, No. 385 Patentee before: Changzhou Yingzhong Electrical Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090708 |