CN101425370B - Insulation voltage equalizing tube used for super-high or extra-high voltage transformer and production process thereof - Google Patents
Insulation voltage equalizing tube used for super-high or extra-high voltage transformer and production process thereof Download PDFInfo
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- CN101425370B CN101425370B CN200810146855XA CN200810146855A CN101425370B CN 101425370 B CN101425370 B CN 101425370B CN 200810146855X A CN200810146855X A CN 200810146855XA CN 200810146855 A CN200810146855 A CN 200810146855A CN 101425370 B CN101425370 B CN 101425370B
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- 238000009413 insulation Methods 0.000 title claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
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- 239000000853 adhesive Substances 0.000 claims description 36
- 230000001070 adhesive effect Effects 0.000 claims description 36
- 239000011230 binding agent Substances 0.000 claims description 21
- 229920001131 Pulp (paper) Polymers 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 13
- 238000007493 shaping process Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- 239000011122 softwood Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- 238000004537 pulping Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 7
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- 239000002994 raw material Substances 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
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- 239000004576 sand Substances 0.000 claims description 6
- 239000011378 shotcrete Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000013019 agitation Methods 0.000 claims description 3
- 238000010009 beating Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000007667 floating Methods 0.000 claims description 3
- 238000007731 hot pressing Methods 0.000 claims description 3
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- 239000002923 metal particle Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
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- 238000009826 distribution Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
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- 229910052751 metal Inorganic materials 0.000 description 1
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Abstract
The invention discloses an insulating equalizing pipe for a super-high voltage or ultra-high voltage transformer and a method for manufacturing the insulating equalizing pipe. The insulating equalizing pipe comprises an equalizing pipe, a pure insulation paper covering shell, pure insulation paper inner ring braces, a pure insulation paper inner cylinder body, pure insulation paper outer ring braces and a pure insulation paper outer cylinder body; the pure insulation paper covering shell is tightly covered on the outer wall of the equalizing pipe, and the pure insulation paper inner cylinder body is sleeved outside the pure insulation paper covering shell; and the pure insulation paper outer cylinder body is sleeved outside the pure insulation paper inner cylinder body. The insulating equalizing pipe greatly increases the insulation used field strength of the transformers, shortens the insulation distance of the bushing outgoing line of the transformers, eliminates the hidden trouble of the partial discharge generated by the transformer product, improves the operation reliability of the transformer, prolongs the working life of the transformer, and fills a domestic gap in the production of insulating equalizing pipes simultaneously.
Description
Technical field
The present invention relates to a kind of transformer insulated parts, relate in particular to a kind of insulation balance pipe and manufacture method thereof 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.
Summary of the invention
The objective of the invention is to overcome the problems referred to above, the insulation balance pipe and the manufacture method thereof that provide a kind of insulation property to can be used for superhigh pressure or extra-high voltage transformer preferably.
The technical scheme that realizes the present invention's first 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; 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.
Described balance pipe has the bend pipe between two sections straight tubes and the two sections straight tubes.
Described pure insulating paper inner ring stay has 3 to 12, and is distributed between pure insulating paper cover housing and the pure insulating paper inner barrel; Pure insulating paper outer ring stay has 3 to 12, and is distributed between pure insulating paper inner barrel and the pure insulating paper outer cylinder body.
Preferred 4 or 8 of described pure insulating paper inner ring stay, 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 an overlapping part that overlaps mutually of two and half cylindrical shells is bonded and fixed at the end face outwardly of a pure insulating paper inner ring stay jointly, and another overlapping part that overlaps mutually of two and half cylindrical shells is bonded and fixed at the end face outwardly of the pure insulating paper inner ring of another root stay jointly; 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 an overlapping part that overlaps mutually of two and half cylindrical shells is bonded and fixed at the end face outwardly of a pure insulating paper outer ring stay jointly, and another overlapping part that overlaps mutually of two and half cylindrical shells is bonded and fixed at the end face outwardly of the pure insulating paper of another root outer ring stay jointly.
Insulation balance pipe of the present invention 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 technical scheme that realizes the present invention's second purpose is: a kind of manufacture method that is used for the insulation balance pipe of superhigh pressure or extra-high voltage transformer has following steps:
1. do not float kp softwood pulp and water to be that raw material makes the paste pure pulp of adhesive stand-by with tabular or block; 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 and the pure insulating paper outer ring stay of required form; 3. it is stand-by as internal mold to get balance pipe; Balance pipe has the bend pipe between two sections straight tubes and the two sections straight tubes; 4. aluminum or the copper housing got with the balance pipe 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, and make the paste pure pulp become wet plate shape 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 shells 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 shells is corresponding; This two and half cylindrical shell is used to form pure insulating paper inner barrel; 5. according to the 4. identical method of step, it is stand-by to make two and half cylindrical shells that are used to form pure insulating paper outer cylinder body, 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 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, 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 that closely covers on the balance pipe outer surface; 7. get 4 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 are all coated binding agent, then each pure insulating paper inner ring stay symmetry is bonded on the outer surface of the pure insulating paper cover housing that 6. step obtain, two and half cylindrical shells that more 4. step obtained and corresponding pure insulating paper inner ring stay end face outwardly are bonding, wherein: two and 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 an overlapping part that overlaps mutually of two and half cylindrical shells is bonded and fixed at the end face outwardly of a pure insulating paper inner ring stay jointly, and another overlapping part that overlaps mutually of two and half cylindrical shells is bonded and fixed at the end face outwardly of the pure insulating paper inner ring of another root stay jointly; 8. get the pure insulating paper outer ring stay that 2. step obtains, its radical is identical with the radical of pure insulating paper inner ring stay, inward end surface and end face outwardly at each pure insulating paper outer ring stay are all coated binding agent, then each pure insulating paper outer ring stay symmetry is bonded on the outer surface of the pure insulating paper inner barrel that 7. step obtain, and corresponding with the bonding position of pure insulating paper inner ring stay; Two and half cylindrical shells that more 5. step obtained and corresponding pure insulating paper outer ring stay end face outwardly are bonding, wherein: two and 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 an overlapping part that overlaps mutually of two and half cylindrical shells is bonded and fixed at the end face outwardly of a pure insulating paper outer ring stay jointly, and another overlapping part that overlaps mutually of two and half cylindrical shells is bonded and fixed at the end face outwardly of the pure insulating paper of another root outer ring stay jointly; 9. tie up the back with the elasticity binding strap around pure insulating paper outer cylinder body 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.
Above-mentioned steps 1. do not float kp softwood pulp and water is the paste pure pulp that raw material makes adhesive with tabular or block, have following steps: do not float kp softwood pulp and water is put into hydrabrusher with tabular or block, under agitation tabular floating after being ground into slurries, kp softwood pulp do not pumped in the reserve pit by first stock pump by waterpower, by second stock pump slurries in the reserve pit are pumped in the scummer and to remove the gred, slurries after the slagging-off enter in two disc pulping machines subsequently, enter machine chest after the two disc pulping machines of quilt are worn into the slurries that meet technological requirement; Slurries in the machine chest are pumped into by the 3rd stock pump carry out slurries in the stuff box and stir, simultaneously water is added the concentration that makes slurries in the stuff box and be diluted to 1.30～3 times of whitewashing safe level; By the 4th stock pump the slurries in the stuff box are pumped in the sand trap, 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; After slurries flow out from desander, under the effect of gravity, enter in the branch slurry case; To make the concentration of slurries be diluted to the whitewashing safe level in the water adding branch slurry case; Slurries in minute slurry case are pumped in the gunite gun of cylinder whitewashing former by the 5th stock pump, 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 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; This adhesive paste pulp board drops to picking on the platform of the machine of picking; From picking that platform takes off or being adhesive paste pure pulp from picking the adhesive paste pulp board that platform falls.
The two disc pulping machines of above-mentioned steps in 1. are provided with 2～4, and the front and back series connection is used.Above-mentioned steps meets technological requirement described in 1. and is meant: the solubility of the fiber in the slurries is 34%～37%.When above-mentioned steps was diluted the concentration of slurries in stuff box in 1., the concentration of paper pulp fiber was 2.5 ‰～5 ‰; When in minute slurry case, the concentration of slurries being diluted, concentration 1.8 ‰～2.2 ‰ of paper pulp fiber.
The present invention has positive effect: the insulation balance pipe of (1) manufacturing of the present invention 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.(2) manufacture method of the present invention adopts unique prestressing force bandage technology, in the whole process of insulating part drying, make insulating part evenly stressed, avoid in dry run, owing to stressed reason such as irregular, cause insulation balance pipe inside insulation defects such as pore to occur.
Description of drawings
Fig. 1 is the structural representation of insulation balance pipe of the present invention;
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 invention 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 invention 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 62, 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 of semi-annular shape, 72-2, these 2 half cylindrical shell 72-1,72-2 is overlapped mutually to be bonded and fixed at by binding agent by separately inclined-plane overlapping part and constitutes pure insulating paper inner barrel 72 together, and two and half cylindrical shell 72-1, the overlapping part that overlaps mutually of 72-2 is bonded and fixed at two and half cylindrical shell 72-1 jointly with the end face outwardly of a pure insulating paper inner ring stay 71, another overlapping part that overlaps mutually of 72-2 is bonded and fixed at the end face outwardly of the pure insulating paper inner ring of another root stay 71 jointly.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 of semi-annular shape, 74-2, these 2 half cylindrical shell 74-1,74-2 is overlapped mutually to be bonded and fixed at by binding agent by separately inclined-plane overlapping part and constitutes pure insulating paper outer cylinder body 74 together, and two and half cylindrical shell 74-1, the overlapping part that overlaps mutually of 74-2 is bonded and fixed at two and half cylindrical shell 74-1 jointly with the end face outwardly of a pure insulating paper outer ring stay 73, another overlapping part that overlaps mutually of 74-2 is bonded and fixed at the end face outwardly of the pure insulating paper of another root outer ring stay 73 jointly.
Insulation balance pipe of the present invention 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 invention 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, and make the paste pure pulp become wet plate shape 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 4 or 8 pure insulating paper inner ring stays 71 that 2. step obtains, 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 72-1,72-2 is overlapped mutually to be bonded and fixed at by binding agent by separately inclined-plane overlapping part and constitutes pure insulating paper inner barrel 72 together, and two and half cylindrical shell 72-1, the overlapping part that overlaps mutually of 72-2 is bonded and fixed at two and half cylindrical shell 72-1 jointly with the end face outwardly of a pure insulating paper inner ring stay 71, another overlapping part that overlaps mutually of 72-2 is bonded and fixed at the end face outwardly of the pure insulating paper inner ring of another root stay 71 jointly.
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 inner barrel 72 that 7. step obtain, and corresponding with the bonding position of pure insulating paper inner ring stay 71; Two and the half cylindrical shell 74-1 that more 5. step obtained, 74-2 and corresponding pure insulating paper outer ring stay 73 end face outwardly are bonding, wherein: two and half cylindrical shell 74-1,74-2 is overlapped mutually to be bonded and fixed at by binding agent by separately inclined-plane overlapping part and constitutes pure insulating paper outer cylinder body 74 together, and two and half cylindrical shell 74-1, the overlapping part that overlaps mutually of 74-2 is bonded and fixed at two and half cylindrical shell 74-1 jointly with the end face outwardly of a pure insulating paper outer ring stay 73, another overlapping part that overlaps mutually of 74-2 is bonded and fixed at the end face outwardly of the pure insulating paper of another root outer ring stay 73 jointly.
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 (9)
1. an 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); 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 (62), 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);
Balance pipe (61) has the bend pipe between two sections straight tubes and the two sections straight tubes.
2. the insulation balance pipe that is used for superhigh pressure or extra-high voltage transformer according to claim 1 is characterized in that: pure insulating paper inner ring stay (71) has 3 to 12, and is distributed between pure insulating paper cover housing (62) and the pure insulating paper inner barrel (72); Pure insulating paper outer ring stay (73) has 3 to 12, and is distributed between pure insulating paper inner barrel (72) and the pure insulating paper outer cylinder body (74).
3. the insulation balance pipe that is used for superhigh pressure or extra-high voltage transformer according to claim 2, it is characterized in that: 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, and two and half cylindrical shell (72-1, an overlapping part that overlaps mutually 72-2) is bonded and fixed at two and half cylindrical shell (72-1 with the end face outwardly of a pure insulating paper inner ring stay (71) jointly, another overlapping part that overlaps mutually 72-2) is bonded and fixed at the end face outwardly of the pure insulating paper inner ring of another root stay (71) jointly; 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, and two and half cylindrical shell (74-1, an overlapping part that overlaps mutually 74-2) is bonded and fixed at two and half cylindrical shell (74-1 with the end face outwardly of a pure insulating paper outer ring stay (73) jointly, another overlapping part that overlaps mutually 74-2) is bonded and fixed at the end face outwardly of the pure insulating paper of another root outer ring stay (73) jointly.
4. according to the described insulation balance pipe that is used for superhigh pressure or extra-high voltage transformer of one of claim 1 to 3, it 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).
5. manufacture method that is used for the insulation balance pipe of superhigh pressure or extra-high voltage transformer is characterized in that having following steps:
1. do not float kp softwood pulp and water to be that raw material makes the paste pure pulp of adhesive stand-by with tabular or block;
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, and make the paste pure pulp become wet plate shape 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 shells (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 shells (72-1,72-2) is corresponding; This two and half cylindrical shell (72-1,72-2) is used to form pure insulating paper inner barrel (72);
5. according to the 4. identical method of step, it is stand-by to make two and half cylindrical shells (74-1,74-2) 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 surface;
7. get (71) 4 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) bonding with corresponding pure insulating paper inner ring stay (71) end face outwardly, wherein: two and 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, and two and half cylindrical shell (72-1, an overlapping part that overlaps mutually 72-2) is bonded and fixed at two and half cylindrical shell (72-1 with the end face outwardly of a pure insulating paper inner ring stay (71) jointly, another overlapping part that overlaps mutually 72-2) is bonded and fixed at the end face outwardly of the pure insulating paper inner ring of another root stay (71) jointly;
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 inner barrel (72) that 7. step obtain, and corresponding with the bonding position of pure insulating paper inner ring stay (71); Two and the half cylindrical shell (74-1 that more 5. step obtained, 74-2) bonding with corresponding pure insulating paper outer ring stay (73) end face outwardly, wherein: two and 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, and two and half cylindrical shell (74-1, an overlapping part that overlaps mutually 74-2) is bonded and fixed at two and half cylindrical shell (74-1 with the end face outwardly of a pure insulating paper outer ring stay (73) jointly, another overlapping part that overlaps mutually 74-2) is bonded and fixed at the end face outwardly of the pure insulating paper of another root outer ring stay (73) jointly;
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.
6. the manufacture method that is used for the insulation balance pipe of superhigh pressure or extra-high voltage transformer according to claim 5, it is characterized in that: step 1. do not float kp softwood pulp and water is the paste pure pulp that raw material makes adhesive with tabular or block, have following steps:
Do not float kp softwood pulp and water is put into hydrabrusher (11) with tabular or block, 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) subsequently, enter machine chest (15) after the two disc pulping machines (14) of quilt are worn into the slurries that meet technological requirement;
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 1.30～3 times of whitewashing safe level; 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 the whitewashing safe level in the water adding branch slurry case (24);
To divide the slurries in the slurry case (24) to pump in the gunite gun of cylinder whitewashing former (32), slurries will be sprayed onto the adhesive paste paper pulp that forms thin layer on the netted shaping drum by its shower nozzle by gunite gun by the 5th stock pump (55); The felt band of adhesive paste paper forming device (33) 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; This adhesive paste pulp board drops to picking on the platform of the machine of picking (34); From picking that platform takes off or being adhesive paste pure pulp from picking the adhesive paste pulp board that platform falls.
7. the manufacture method that is used for the insulation balance pipe of superhigh pressure or extra-high voltage transformer according to claim 6 is characterized in that: described pair of disc pulping machine (14) is provided with 2～4, and the front and back series connection is used.
8. the manufacture method that is used for the insulation balance pipe of superhigh pressure or extra-high voltage transformer according to claim 6 is characterized in that: the described technological requirement that meets is meant: the solubility of the fiber in the slurries is 34%～37%.
9. the manufacture method that is used for the insulation balance pipe of superhigh pressure or extra-high voltage transformer according to claim 6 is characterized in that: when in stuff box (21) concentration of slurries being diluted, the concentration of paper pulp fiber is 2.5 ‰～5 ‰; When in minute slurry case (24), the concentration of slurries being diluted, concentration 1.8 ‰～2.2 ‰ of paper pulp fiber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810146855XA CN101425370B (en) | 2008-05-07 | 2008-08-26 | Insulation voltage equalizing tube used for super-high or extra-high voltage transformer and production process thereof |
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| CN200810025515.1 | 2008-05-07 | ||
| CN200810025515 | 2008-05-07 | ||
| CN200810146855XA CN101425370B (en) | 2008-05-07 | 2008-08-26 | Insulation voltage equalizing tube used for super-high or extra-high voltage transformer and production process thereof |
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| CN101425370A CN101425370A (en) | 2009-05-06 |
| CN101425370B true CN101425370B (en) | 2010-12-22 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640114B (en) * | 2009-07-06 | 2011-06-22 | 保定天威保变电气股份有限公司 | Extra-high voltage transformer lead shielding device |
| CN102938305B (en) * | 2012-11-28 | 2016-01-06 | 常州市英中电气有限公司 | Super extra-high-voltage alternating current transformer outgoing line device |
| CN105609265B (en) * | 2016-03-01 | 2017-11-14 | 泰州新源电工器材有限公司 | A kind of AC transformer outgoing line device |
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| CN2183606Y (en) * | 1993-09-15 | 1994-11-23 | 赵长俊 | Inflated high-voltage testing transformor without local discharge |
| CN2365748Y (en) * | 1999-02-05 | 2000-02-23 | 武汉市江汉开关变压器厂 | Air filling light testing transformer |
| CN2613863Y (en) * | 2003-04-04 | 2004-04-28 | 特变电工衡阳变压器有限公司 | Insulation structure attatched to 220 KV sleeved voltage equalizing balls |
| CN2664130Y (en) * | 2003-09-15 | 2004-12-15 | 张道勇 | Novel voltage equalizing ball |
| CN201178017Y (en) * | 2007-12-28 | 2009-01-07 | 保定天威集团有限公司 | Balance tube for transformer connecting between pillars |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2183606Y (en) * | 1993-09-15 | 1994-11-23 | 赵长俊 | Inflated high-voltage testing transformor without local discharge |
| CN2365748Y (en) * | 1999-02-05 | 2000-02-23 | 武汉市江汉开关变压器厂 | Air filling light testing transformer |
| CN2613863Y (en) * | 2003-04-04 | 2004-04-28 | 特变电工衡阳变压器有限公司 | Insulation structure attatched to 220 KV sleeved voltage equalizing balls |
| CN2664130Y (en) * | 2003-09-15 | 2004-12-15 | 张道勇 | Novel voltage equalizing ball |
| CN201178017Y (en) * | 2007-12-28 | 2009-01-07 | 保定天威集团有限公司 | Balance tube for transformer connecting between pillars |
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| CN101425370A (en) | 2009-05-06 |
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Commission number: 4W102356 Conclusion of examination: The Patent Reexamination Board shall continue to maintain the validity of the patent claim No. 19001st, which was made by the Patent Reexamination Board on 2012 06, and decided to maintain the effective claim 3-9 of 28. Decision date of declaring invalidation: 20140730 Decision number of declaring invalidation: 23407 Denomination of invention: Insulation voltage equalizing tube used for super-high or extra-high voltage transformer and production process thereof Granted publication date: 20101222 Patentee: CHANGZHOU YINGZHONG ELECTRICAL Co.,Ltd. |
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Effective date of registration: 20170516 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. |
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