CN107993780B - Process for covering super-thick insulating layer of pressure equalizing ball and pressure equalizing pipe integrated structure - Google Patents
Process for covering super-thick insulating layer of pressure equalizing ball and pressure equalizing pipe integrated structure Download PDFInfo
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- CN107993780B CN107993780B CN201711181243.XA CN201711181243A CN107993780B CN 107993780 B CN107993780 B CN 107993780B CN 201711181243 A CN201711181243 A CN 201711181243A CN 107993780 B CN107993780 B CN 107993780B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
- H01B19/02—Drying; Impregnating
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Abstract
A process for covering a super-thick insulating layer of a voltage-sharing ball and voltage-sharing tube integrated structure relates to a process for covering an insulating layer by a voltage-sharing ball and a voltage-sharing tube. The invention mainly aims to solve the problems that the replacement time of the existing voltage-sharing ball and voltage-sharing tube insulating layer covering process is long and the like. Cleaning a mould; detecting and cutting a wet paper board; taking out the soaked wet paper board, flatly spreading the wet paper board on a workbench, rolling the wet paper board by using a hand roller, discharging air bubbles, scratching a lap joint groove, and beating and fluffing the surface of the wet paper board; surrounding the wet paper board for one circle around the pressure equalizing pipe, then processing the lap joint groove of the wet paper board, and binding by using a nylon binding band; the wet paperboard is put on a pressure equalizing ball for a circle; smashing the overlapped parts at the two ends and the overlapped part at the R corner of the wet paper board into paste, then moderately beating by hands and repeatedly pressing, binding by a nylon binding band, covering the first layer, then vacuumizing and dehydrating, and detaching the nylon binding band; covering the second layer to the sixth layer in sequence, drying and shaping, cooling, and drawing out the nylon bandage. Its advantage is short baking time.
Description
The technical field is as follows:
the invention relates to a process for covering insulating layers on a voltage-sharing ball and a voltage-sharing tube, in particular to a process for covering an ultra-thick insulating layer with an integrated structure of the voltage-sharing ball and the voltage-sharing tube.
Background art:
the thickness of the insulating layer of the pressure equalizing ball and the pressure equalizing pipe is 20 mm, and the insulating layer is an ultra-thick insulating layer. The existing technology for covering the insulating layer of the voltage-sharing ball and the voltage-sharing tube has the following problems: moisture of the insulating layer can not leak out completely, and gaps can be generated among all layers of the insulating layer to form air cavities, so that products can not be used, the product yield is low, and much waste is caused. In addition, the drying time is long, and the work efficiency is low.
The invention content is as follows:
the technical problem to be solved by the invention is to provide a process for covering the ultra-thick insulating layer with the integrated structure of the pressure equalizing ball and the pressure equalizing pipe, wherein the process can completely leak the moisture of the insulating layer, an air cavity cannot be formed between each layer of the insulating layer, the drying time is short, and the product qualification rate is high.
The purpose of the invention is realized as follows:
firstly, cleaning a mold:
a high-pressure water gun or special cleaning equipment is used between the dies to repeatedly clean the inside and the outside of the dies to remove pollutants, and the cleaned dies need to ensure that the inside and the outside surfaces are clean and free of pollutants;
secondly, detecting and preparing wet paper boards:
detecting the wet paper board by using an X-ray machine to ensure that no metal foreign matters and pollutants exist in the wet paper board used in the manufacturing of the special-shaped product;
thirdly, cutting a wet paper board:
and cutting the wet paper board with the corresponding size according to the specification of the product, tearing 1-2 layers of the outer surface of the wet paper board, and ensuring that the thickness of the wet paper board meets the requirement specified by the thickness ratio of the wet paper board to the finished product.
Fourthly, soaking the wet paper board:
spreading the peeled wet paper board in a water tank for 5-8 min;
taking out the soaked wet paperboard, flatly paving the wet paperboard on a workbench, rolling the wet paperboard by using a hand roller, discharging air bubbles, scratching one end of the wet paperboard by using a hand to form an overlap joint groove with the width of 60-80mm, wherein the thickness of the outer edge of the overlap joint groove is half of that of the wet paperboard, and beating and fluffing the surface of the wet paperboard by using deionized water;
fifthly, manufacturing and binding modes at the pressure equalizing pipe:
surrounding the wet paper board for one circle around the pressure equalizing pipe, then processing the overlapping groove of the wet paper board, namely, manually bending the other end of the wet paper board, and similarly bending the overlapping groove with the width of 60-80mm, wherein the thickness of the overlapping grooves at the two ends of the wet paper board after being overlapped is the same as that of the wet paper board, the overlapping length of the wet paper board is 60-80mm, and then performing half-overlapping binding by using a nylon binding band; binding three layers;
the binding process is noticed in the direction of the groove at the lap joint, the binding direction of the nylon bandage is ensured to be consistent with the lap joint direction of the groove, and the clockwise binding is from top to bottom in a spiral manner.
Sixthly, manufacturing and binding the pressure equalizing ball:
feeding, wherein when the wet paper board is patted, the wet paper board is patted with moderate force from light to heavy according to the humidity of the wet paper board, and the wet paper board is surrounded by a circle on a pressure equalizing ball; smashing the lapping parts at the two ends and the lapping part at the R corner of the wet paper board into paste, then moderately beating the paste by hands and repeatedly pressing the paste until the fibers of the wet paper board are fully fused (pulp combining), and then performing half-lap binding by using a nylon binding band to completely cover the wet paper board by the nylon binding band; binding three layers;
when the nylon bandage is wound on the lower edge of the pressure-equalizing ball, the nylon bandage is wound from one side of the pressure-equalizing ball to the other side, at the moment, a coordinating person needs to press the nylon bandage, then the nylon bandage is wound back to the lower edge of the starting side, and the nylon bandage is guaranteed to be stressed continuously in the whole process;
after covering the first layer, putting the connected pressure equalizing ball and pressure equalizing pipe into a vacuum cover for vacuum-pumping dehydration for 10min, detaching the nylon binding belt after dehydration, and covering for the second time according to the mode of the fifth step and the sixth step; when covering the second layer, the binding layer number of the nylon binding band is three layers, and the dehydration time in the vacuum cover is 15 min; when the third layer is covered, the binding layer number of the nylon binding band is four, and the dehydration time in the vacuum cover is 20 min; when the fourth layer is covered, the number of binding layers of the nylon binding bands is five, and the dehydration time in a vacuum cover is 30 min; when the fifth layer is covered, the binding layer number of the nylon binding band is seven, and the dehydration time in the vacuum cover is 40 min; when the sixth layer is covered, the binding layer number of the nylon binding band is nine, and the dehydration time in the vacuum cover is 50 min;
spraying a small amount of water to the nylon binding band after dehydration, and beating the nylon binding band with a paperboard in a pulling way, so that the flatness of the outer surface of the insulating layer can be improved, and the outer surface of the insulating layer forms a reticulate pattern;
then sending the product into a drying room for drying and shaping, wherein the drying time is about 7 days, and the drying temperature is 120 ℃; and taking out the product, and after the product is completely cooled to room temperature, drawing out the nylon bandage to finish covering.
The invention has the advantages that: because each layer is subjected to vacuum dehydration after being bound, moisture can be completely leaked out, the drying time can be reduced, and an air cavity cannot be formed between the layers of the insulating layer. In addition, the process is simple, the work efficiency is high, and the product qualification rate is high.
The specific implementation mode is as follows:
firstly, cleaning a mold:
a high-pressure water gun or special cleaning equipment is used between the dies to repeatedly clean the inside and the outside of the dies to remove pollutants, and the cleaned dies need to ensure that the inside and the outside surfaces are clean and free of pollutants;
secondly, detecting and preparing wet paper boards:
detecting the wet paper board by using an X-ray machine to ensure that no metal foreign matters and pollutants exist in the wet paper board used in the manufacturing of the special-shaped product;
thirdly, cutting a wet paper board:
and cutting the wet paper board with the corresponding size according to the specification of the product, tearing 1-2 layers of the outer surface of the wet paper board, and ensuring that the thickness of the wet paper board meets the requirement specified by the thickness ratio of the wet paper board to the finished product.
Fourthly, soaking the wet paper board:
spreading the peeled wet paper board in a water tank for 5-8 min;
taking out the soaked wet paperboard and flatly paving the wet paperboard on a workbench, rolling the wet paperboard by using a hand roller to be flat, discharging bubbles, flexing one end of the wet paperboard by using a hand to form an overlap joint groove with the width of 60 mm or 70 mm or 80mm, wherein the thickness of the outer edge of the overlap joint groove is half of that of the wet paperboard, and beating and fluffing the surface of the wet paperboard by using deionized water;
fifthly, manufacturing and binding modes at the pressure equalizing pipe:
surrounding the wet paper board for one circle around the pressure equalizing pipe, then processing the lapping grooves of the wet paper board, namely, manually bending the other end of the wet paper board, similarly bending the lapping grooves with the width of 60 mm or 70 mm or 80mm, wherein the thickness of the lapping grooves at the two ends of the wet paper board after lapping is the same as the thickness of the wet paper board, the lapping length of the wet paper board is between 60 mm or 70 mm or 80mm, and then performing semi-stacking binding by using a nylon binding band; binding three layers;
the binding process is noticed in the direction of the groove at the lap joint, the binding direction of the nylon bandage is ensured to be consistent with the lap joint direction of the groove, and the clockwise binding is from top to bottom in a spiral manner.
Sixthly, manufacturing and binding the pressure equalizing ball:
feeding, wherein when the wet paper board is patted, the wet paper board is patted with moderate force from light to heavy according to the humidity of the wet paper board, and the wet paper board is surrounded by a circle on a pressure equalizing ball; smashing the lapping parts at the two ends and the lapping part at the R corner of the wet paper board into paste, then moderately beating the paste by hands and repeatedly pressing the paste until the fibers of the wet paper board are fully fused (pulp combining), and then performing half-lap binding by using a nylon binding band to completely cover the wet paper board by the nylon binding band; binding three layers;
when the nylon bandage is wound on the lower edge of the pressure-equalizing ball, the nylon bandage is wound from one side of the pressure-equalizing ball to the other side, at the moment, a coordinating person needs to press the nylon bandage, then the nylon bandage is wound back to the lower edge of the starting side, and the nylon bandage is guaranteed to be stressed continuously in the whole process;
after covering the first layer, putting the connected pressure equalizing ball and pressure equalizing pipe into a vacuum cover for vacuum-pumping dehydration for 10min, detaching the nylon binding belt after dehydration, and covering for the second time according to the mode of the fifth step and the sixth step; when covering the second layer, the binding layer number of the nylon binding band is three layers, and the dehydration time in the vacuum cover is 15 min; when the third layer is covered, the binding layer number of the nylon binding band is four, and the dehydration time in the vacuum cover is 20 min; when the fourth layer is covered, the number of binding layers of the nylon binding bands is five, and the dehydration time in a vacuum cover is 30 min; when the fifth layer is covered, the binding layer number of the nylon binding band is seven, and the dehydration time in the vacuum cover is 40 min; when the sixth layer is covered, the binding layer number of the nylon binding band is nine, and the dehydration time in the vacuum cover is 50 min;
spraying a small amount of water to the nylon binding band after dehydration, and beating the nylon binding band with a paperboard in a pulling way, so that the flatness of the outer surface of the insulating layer can be improved, and the outer surface of the insulating layer forms a reticulate pattern;
then sending the product into a drying room for drying and shaping, wherein the drying time is about 7 days, and the drying temperature is 120 ℃; and taking out the product, and after the product is completely cooled to room temperature, drawing out the nylon bandage to finish covering.
Claims (1)
1. The process for covering the ultra-thick insulating layer of the pressure equalizing ball and pressure equalizing pipe integrated structure is characterized in that:
firstly, cleaning a mold:
a high-pressure water gun or special cleaning equipment is used between the dies to repeatedly clean the inside and the outside of the dies to remove pollutants, and the cleaned dies need to ensure that the inside and the outside surfaces are clean and free of pollutants;
secondly, detecting and preparing wet paper boards:
detecting the wet paper board by using an X-ray machine to ensure that no metal foreign matters and pollutants exist in the wet paper board used in the manufacturing of the special-shaped product;
thirdly, cutting a wet paper board:
cutting a wet paper board with a corresponding size according to the specification of the product, and tearing 1-2 layers of the outer surface of the wet paper board;
fourthly, soaking the wet paper board:
spreading the peeled wet paper board in a water tank for 5-8 min;
taking out the soaked wet paperboard, flatly paving the wet paperboard on a workbench, rolling the wet paperboard by using a hand roller, discharging air bubbles, scratching one end of the wet paperboard by using a hand to form an overlap joint groove with the width of 60-80mm, wherein the thickness of the outer edge of the overlap joint groove is half of that of the wet paperboard, and beating and fluffing the surface of the wet paperboard by using deionized water;
fifthly, manufacturing and binding modes at the pressure equalizing pipe:
surrounding the wet paper board for one circle around the pressure equalizing pipe, then processing the overlapping groove of the wet paper board, namely, manually bending the other end of the wet paper board, and similarly bending the overlapping groove with the width of 60-80mm, wherein the thickness of the overlapping grooves at the two ends of the wet paper board after being overlapped is the same as that of the wet paper board, the overlapping length of the wet paper board is 60-80mm, and then performing half-overlapping binding by using a nylon binding band; binding three layers;
sixthly, manufacturing and binding the pressure equalizing ball:
feeding, wherein when the wet paper board is patted, the wet paper board is patted with moderate force from light to heavy according to the humidity of the wet paper board, and the wet paper board is surrounded by a circle on a pressure equalizing ball; smashing the lapping parts at the two ends and the lapping part at the R corner of the wet paper board into paste, then moderately beating the paste by hands and repeatedly pressing the paste until the fibers of the wet paper board are fully fused, and then performing half-lap binding by using a nylon binding band to completely cover the wet paper board by the nylon binding band; binding three layers;
when the nylon bandage is wound on the lower edge of the pressure-equalizing ball, the nylon bandage is wound from one side of the pressure-equalizing ball to the other side, at the moment, a coordinating person needs to press the nylon bandage, then the nylon bandage is wound back to the lower edge of the starting side, and the nylon bandage is guaranteed to be stressed continuously in the whole process;
after covering the first layer, putting the connected pressure equalizing ball and pressure equalizing pipe into a vacuum cover for vacuum-pumping dehydration for 10min, detaching the nylon binding belt after dehydration, and covering for the second time according to the mode of the fifth step and the sixth step; when covering the second layer, the binding layer number of the nylon binding band is three layers, and the dehydration time in the vacuum cover is 15 min; when the third layer is covered, the binding layer number of the nylon binding band is four, and the dehydration time in the vacuum cover is 20 min; when the fourth layer is covered, the number of binding layers of the nylon binding bands is five, and the dehydration time in a vacuum cover is 30 min; when the fifth layer is covered, the binding layer number of the nylon binding band is seven, and the dehydration time in the vacuum cover is 40 min; when the sixth layer is covered, the binding layer number of the nylon binding band is nine, and the dehydration time in the vacuum cover is 50 min;
spraying a small amount of water to the nylon binding band after dehydration, and beating the nylon binding band with a paperboard in a pulling way, so that the flatness of the outer surface of the insulating layer can be improved, and the outer surface of the insulating layer forms a reticulate pattern;
then sending the product into a drying room for drying and shaping, wherein the drying time is about 7 days, and the drying temperature is 120 ℃; and taking out the product, and after the product is completely cooled to room temperature, drawing out the nylon bandage to finish covering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711181243.XA CN107993780B (en) | 2017-11-23 | 2017-11-23 | Process for covering super-thick insulating layer of pressure equalizing ball and pressure equalizing pipe integrated structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711181243.XA CN107993780B (en) | 2017-11-23 | 2017-11-23 | Process for covering super-thick insulating layer of pressure equalizing ball and pressure equalizing pipe integrated structure |
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| Publication Number | Publication Date |
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| CN107993780A CN107993780A (en) | 2018-05-04 |
| CN107993780B true CN107993780B (en) | 2020-04-07 |
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| CN201711181243.XA Active CN107993780B (en) | 2017-11-23 | 2017-11-23 | Process for covering super-thick insulating layer of pressure equalizing ball and pressure equalizing pipe integrated structure |
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| CN111341555B (en) * | 2020-03-28 | 2021-09-24 | 潍坊汇胜绝缘技术有限公司 | Method for manufacturing conical coil of transformer |
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| CN101425369B (en) * | 2008-05-07 | 2011-04-20 | 常州市英中电气有限公司 | Insulation voltage equalizing ball used for super-high or extra-high voltage transformer and production process thereof |
| CN102930978B (en) * | 2012-11-15 | 2014-09-10 | 常州市英中电气有限公司 | Wet forming process of super-high voltage transformer insulator |
| CN203013437U (en) * | 2012-12-13 | 2013-06-19 | 天威保变(合肥)变压器有限公司 | 220kV guide rod type casing pipe voltage-sharing ball insulation protective structure |
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Address after: 111000 No. 124, Rongxing Road, Taizihe District, Liaoyang City, Liaoning Province Patentee after: Liaoning XINGQI Electric Material Co.,Ltd. Address before: 111000 daoxizhuang village, wangshuitai street, Taizihe District, Liaoyang City, Liaoning Province Patentee before: LIAONING XINGQI ELECTRIC MATERIAL LLC |
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