CN101615455A - Vacuum glue-dipping insulation pipe without air gaps and manufacture method - Google Patents
Vacuum glue-dipping insulation pipe without air gaps and manufacture method Download PDFInfo
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- CN101615455A CN101615455A CN200910305303A CN200910305303A CN101615455A CN 101615455 A CN101615455 A CN 101615455A CN 200910305303 A CN200910305303 A CN 200910305303A CN 200910305303 A CN200910305303 A CN 200910305303A CN 101615455 A CN101615455 A CN 101615455A
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Abstract
Vacuum glue-dipping insulation pipe without air gaps and manufacture method, it relates to a kind of insulated tube and manufacture method.The present invention easily produces bubble, slit, local delamination for solving existing insulated tube in manufacture process between each layer glass cloth, cause the problem of insulated tube electric property and bad mechanical property.Insulated tube: be entwined by glass cloth, be soaked with resin glue in the glass cloth, resin glue is by ratio of weight and the number of copies by 100 parts modified epoxy, 85 parts curing agent, 10 parts flexibilizer and 3 parts promoter, in temperature is to stir under 50～80 ℃ the condition to form.Method: one, design core; Two, twine glass cloth; Three, impregnation; Four, solidify for the first time; Five, the demoulding; Six, solidify for the second time; Seven, deburring promptly obtains vacuum glue-dipping insulation pipe without air gaps.The present invention is the impregnation moulding under vacuum state, does not produce bubble, slit, local delamination between each layer glass cloth, makes the electric property of insulated tube and mechanical performance all be improved.
Description
Technical field
The present invention relates to a kind of insulated tube and manufacture method.
Background technology
Along with increasing sharply of net capacity, require high-voltage electrical equipment should possess the performance of big capacity, miniaturization, dry-type transformer with safety, reliable, energy-conservation, fire prevention, explosion-proof, do not produce pernicious gas, free from environmental pollution, safeguard advantages such as simple, be widely used on the high-voltage electrical equipment of big capacity, miniaturization; Requiring to have very high electrical strength and mechanical strength for the basic components insulated tube (tube) in the dry-type transformer, otherwise, can not under high voltage electric field, use.The manufacture method of existing insulated tube (tube) is with the gluing of glass cloth above and below, then on the rolling machine of special use, the glass cloth of last glue is twisted on the core, and limit crimping heating edge is pressurizeed, and sloughs core after the curing and makes insulated tube (tube); In the said method, because glass cloth surface exists texture uneven, make gluing inhomogeneous, glass cloth will produce bubble, slit, local delamination between each layer glass cloth in the process that rolls, thereby causes insulated tube electric property and bad mechanical property.
Summary of the invention
The objective of the invention is for solving existing insulated tube in manufacture process, easily produce bubble, slit, local delamination between each layer glass cloth, the problem that causes insulated tube electric property and bad mechanical property provides a kind of vacuum glue-dipping insulation pipe without air gaps and manufacture method.
Vacuum glue-dipping insulation pipe without air gaps of the present invention is entwined by glass cloth, be soaked with resin glue in the described glass cloth, described resin glue is by ratio of weight and the number of copies by 100 parts modified epoxy, 85 parts curing agent, 10 parts flexibilizer and 3 parts promoter, in temperature is to stir under 50～80 ℃ the condition to form.
The manufacture method of vacuum glue-dipping insulation pipe without air gaps of the present invention realizes by following steps: step 1, design core: press the internal diameter design core external diameter of insulated tube, core length is 0.5～2 meter; Step 2, twine glass cloth: with the core preheating, preheat temperature is that 70～90 ℃, warm-up time are 20～40 minutes, and core is contained on the batcher, and glass cloth is wrapped on the core; Step 3, impregnation: the core that will be tied with glass cloth is put in the vacuum-latexed machine and vacuumizes, when vacuum degree is evacuated to 0.05～0.08 MPa, and beginning resin pickup glue, the temperature in the vacuum-latexed machine is 50～80 ℃, the time of resin pickup glue is 2～3 hours; Step 4, curing for the first time: will be tied with the core pushing-in rotary type baking oven inner edge rotation limit baked and cured of glass cloth after step 3 is finished immediately, curing temperature is 130～150 ℃, 2～3 hours curing times; Step 5, the demoulding: the core that will be tied with glass cloth is put on the winding arbor extraction press, deviates from core, obtains the insulated tube woolen cloth; Step 6, the second time solidify: the insulated tube woolen cloth is put in the baking oven cures, stoving temperature is 150～170 ℃, and the time of curing is 4～8 hours; Step 7, deburring: remove the processing length at the woollen two ends of insulated tube, remove the burr on the insulated tube woolen cloth, promptly obtain vacuum glue-dipping insulation pipe without air gaps.
Advantage of the present invention is: one, vacuum glue-dipping insulation pipe without air gaps of the present invention is impregnation moulding under vacuum state, therefore, do not produce bubble, slit, local delamination between each layer glass cloth, make the electric property of insulated tube and mechanical performance all be improved.Two, the present invention provides electrical strength and the high basic components of mechanical strength for dry-type transformer, and the present invention can be applied on the High-Voltage Electrical Appliances and superhigh pressure electrical equipment equipment under the high electric field strength.
Embodiment
Embodiment one: the insulated tube of present embodiment is entwined by glass cloth, be soaked with resin glue in the glass cloth, described resin glue is by ratio of weight and the number of copies by 100 parts epoxy resin, 85 parts curing agent, 10 parts flexibilizer and 3 parts promoter, in temperature is to stir under 50～80 ℃ the condition to form.Traditional insulated tube manufacture method can only be processed the cross section and is circular insulated tube; The insulated tube of this embodiment can be wound in the cross section and be circle, rectangle or ellipse.
Embodiment two: the curing agent of present embodiment is methyl tetrahydro phthalic anhydride or methyl hexahydrophthalic anhydride.The viscosity of methyl tetrahydro phthalic anhydride or methyl hexahydrophthalic anhydride is low, impregnability good.Other composition is identical with embodiment one.
Embodiment three: the flexibilizer of present embodiment is the poly-ninth of the ten Heavenly Stems of dicarboxylic anhydride.Dicarboxylic anhydride has good toughness effect the poly-ninth of the ten Heavenly Stems.Other composition is identical with embodiment one.
Embodiment four: the promoter of present embodiment is benzyl dimethylamine.Benzyl dimethylamine can shorten the curing time of resin glue.Other composition is identical with embodiment one.
Embodiment five: the following steps of passing through of present embodiment realize: step 1, design core: press the internal diameter design core external diameter of insulated tube, core length is 0.5～2 meter; Step 2, twine glass cloth: with the core preheating, preheat temperature is that 70～90 ℃, warm-up time are 20～40 minutes, and core is contained on the batcher, and glass cloth is wrapped on the core; Twining thickness decides according to the needs of insulated tube.Step 3, impregnation: the core that will be tied with glass cloth is put in the vacuum-latexed machine and vacuumizes, when vacuum degree is evacuated to 0.05～0.08 MPa, and beginning resin pickup glue, the temperature in the vacuum-latexed machine is 50～80 ℃, the time of resin pickup glue is 2～3 hours; Step 4, curing for the first time: will be tied with the core pushing-in rotary type baking oven inner edge rotation limit baked and cured of glass cloth after step 3 is finished immediately, curing temperature is 130～150 ℃, 2～3 hours curing times; Step 5, the demoulding: the core that will be tied with glass cloth is put on the winding arbor extraction press, deviates from core, obtains the insulated tube woolen cloth; Step 6, the second time solidify: the insulated tube woolen cloth is put in the baking oven cures, stoving temperature is 150～170 ℃, and the time of curing is 4～8 hours; Step 7, deburring: remove the processing length at the woollen two ends of insulated tube, remove the burr on the insulated tube woolen cloth, promptly obtain vacuum glue-dipping insulation pipe without air gaps.The model of rotary baking oven is YKZ-100 in the step 4.The model of winding arbor extraction press is YM731B or YM7412 in the step 5.The model of a conventional oven is RXH in the step 6.Curing temperature in the step 4 is lower than 130 ℃, and resin glue does not solidify; Curing temperature is higher than 150 ℃, and the resin glue reaction is too fierce, is easy to generate bubble, influences the impregnation quality.Temperature in the step 3 in the vacuum-latexed machine is 50～80 ℃, makes the viscosity of resin glue reduce, and makes the impregnability of glass cloth best.Curing for the second time is electric property and the mechanical strength in order to improve insulated tube.The diameter that this method can be made insulated tube is that 0.1～1 meter, minimum thickness are 1 millimeter.The insulated tube air gap content that this method is made is low, has that dielectric loss is low, mechanical strength is high, indeformable, no layering, suction are few, high pressure resistant, the characteristics of resistance to chemical attack.
Embodiment six: the step 2 core mould preheat temperature of present embodiment is that 80 ℃, warm-up time are 30 minutes.When the core preheat temperature is 80 ℃, can not reduce the temperature of resin glue, make resin glue remain low viscosity in the resin pickup glue starting stage.Other step is identical with embodiment six.
Embodiment seven: the vacuum degree in the step 3 of present embodiment is 0.07 MPa, and the temperature in the vacuum-latexed machine is 65 ℃, and the time of resin pickup glue is 3 hours.The time of resin pickup glue is long more, and impregnability is good more.Other step is identical with embodiment six.
Embodiment eight: curing temperature is 140 ℃ in the step 4 of present embodiment, 3 hours curing times.Curing temperature is 140 ℃, and the resin glue reaction is moderate, resin glue easily solidifies, insulated tube is not easy to produce bubble, the impregnation quality is good.Other step is identical with embodiment six.
Embodiment nine: stoving temperature is that 160 ℃, the time of curing are 8 hours in the step 6 of present embodiment.Stoving temperature is that 160 ℃, the time of curing are to make electric property and mechanical strength the best of insulated tube in 8 hours.Other step is identical with embodiment six.
Claims (9)
1. vacuum glue-dipping insulation pipe without air gaps, described insulated tube is entwined by glass cloth, it is characterized in that: be soaked with resin glue in the described glass cloth, described resin glue is by ratio of weight and the number of copies by 100 parts epoxy resin, 85 parts curing agent, 10 parts flexibilizer and 3 parts promoter, in temperature is to stir under 50～80 ℃ the condition to form.
2. according to the described vacuum glue-dipping insulation pipe without air gaps of claim 1, it is characterized in that: described curing agent is methyl tetrahydro phthalic anhydride or methyl hexahydrophthalic anhydride.
3. according to the described vacuum glue-dipping insulation pipe without air gaps of claim 1, it is characterized in that: described flexibilizer is the poly-ninth of the ten Heavenly Stems of dicarboxylic anhydride.
4. according to the described vacuum glue-dipping insulation pipe without air gaps of claim 1, it is characterized in that: described promoter is benzyl dimethylamine.
5. the manufacture method of a vacuum glue-dipping insulation pipe without air gaps, it is characterized in that: described method realizes by following steps:
Step 1, design core: press the internal diameter design core external diameter of insulated tube, core length is 0.5～2 meter;
Step 2, twine glass cloth: with the core preheating, preheat temperature is that 70～90 ℃, warm-up time are 20～40 minutes, and core is contained on the batcher, and glass cloth is wrapped on the core;
Step 3, impregnation: the core that will be tied with glass cloth is put in the vacuum-latexed machine and vacuumizes, when vacuum degree is evacuated to 0.05～0.08 MPa, and beginning resin pickup glue, the temperature in the vacuum-latexed machine is 50～80 ℃, the time of resin pickup glue is 2～3 hours;
Step 4, curing for the first time: will be tied with the core pushing-in rotary type baking oven inner edge rotation limit baked and cured of glass cloth after step 3 is finished immediately, curing temperature is 130～150 ℃, 2～3 hours curing times;
Step 5, the demoulding: the core that will be tied with glass cloth is put on the winding arbor extraction press, deviates from core, obtains the insulated tube woolen cloth; Step 6, the second time solidify: the insulated tube woolen cloth is put in the baking oven cures, stoving temperature is 150～170 ℃, and the time of curing is 4～8 hours; Step 7, deburring: remove the processing length at the woollen two ends of insulated tube, remove the burr on the insulated tube woolen cloth, promptly obtain vacuum glue-dipping insulation pipe without air gaps.
6. according to the manufacture method of the described vacuum glue-dipping insulation pipe without air gaps of claim 5, it is characterized in that: step 2 core mould preheat temperature is that 80 ℃, warm-up time are 1 hour.
7. according to the manufacture method of the described vacuum glue-dipping insulation pipe without air gaps of claim 5, it is characterized in that: the vacuum degree in the step 3 is 0.07 MPa, and the temperature in the vacuum-latexed machine is 65 ℃, and the time of resin pickup glue is 3 hours.
8. according to the manufacture method of the described vacuum glue-dipping insulation pipe without air gaps of claim 5, it is characterized in that: curing temperature is 140 ℃ in the step 4,3 hours curing times.
9. according to the manufacture method of the described vacuum glue-dipping insulation pipe without air gaps of claim 5, it is characterized in that: stoving temperature is 160 ℃ in the step 6, and the time of curing is 8 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2009103053033A CN101615455B (en) | 2009-08-06 | 2009-08-06 | Manufacturing method of vacuum glue-dipping insulation pipe without air gaps |
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|---|---|---|---|
| CN2009103053033A CN101615455B (en) | 2009-08-06 | 2009-08-06 | Manufacturing method of vacuum glue-dipping insulation pipe without air gaps |
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| CN101615455A true CN101615455A (en) | 2009-12-30 |
| CN101615455B CN101615455B (en) | 2012-01-25 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834042A (en) * | 2010-05-21 | 2010-09-15 | 成都盛帮密封件有限公司 | Process of insulating cap for medium-voltage electrical appliances |
| CN102024536A (en) * | 2010-06-30 | 2011-04-20 | 苏州贝得科技有限公司 | Process for manufacturing insulated sleeve of refrigeration high-voltage motor power terminal |
| CN102179974A (en) * | 2011-01-17 | 2011-09-14 | 中电普瑞科技有限公司 | Fixed high-strength glass fiber epoxy wrapping belt used for thyristor valve string |
| CN103117141A (en) * | 2011-11-16 | 2013-05-22 | 昆山市特种变压器制造有限公司 | Novel insulating cylinder processing method |
| CN104867635A (en) * | 2015-05-18 | 2015-08-26 | 南京电气高压套管有限公司 | Processing method for epoxy resin vacuum impregnation glass fiber hollow composite insulator |
| CN104999607A (en) * | 2015-06-18 | 2015-10-28 | 西安高强绝缘电气有限责任公司 | Manufacturing method of multi-core combined core rod for composite insulator |
| CN105219046A (en) * | 2015-09-06 | 2016-01-06 | 江苏恒神股份有限公司 | Intermediate temperature setting is wound around resin and preparation method thereof, gained is wound around one-way slabs |
| CN110341172A (en) * | 2019-08-12 | 2019-10-18 | 宁波市江北宏菱新兴绝缘材料有限公司 | It is a kind of to insulate into pressure pipe production process and device |
| CN111267368A (en) * | 2018-12-05 | 2020-06-12 | 湖南易净环保科技有限公司 | Production process for winding, extruding and drawing pipe by large-diameter epoxy glass fiber and braid |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101499369B (en) * | 2008-10-17 | 2011-07-20 | 芜湖市金牛变压器制造有限公司 | Material used for dry power transformer and its use method |
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2009
- 2009-08-06 CN CN2009103053033A patent/CN101615455B/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834042B (en) * | 2010-05-21 | 2011-11-30 | 成都盛帮密封件股份有限公司 | Process of insulating cap for medium-voltage electrical appliances |
| CN101834042A (en) * | 2010-05-21 | 2010-09-15 | 成都盛帮密封件有限公司 | Process of insulating cap for medium-voltage electrical appliances |
| CN102024536A (en) * | 2010-06-30 | 2011-04-20 | 苏州贝得科技有限公司 | Process for manufacturing insulated sleeve of refrigeration high-voltage motor power terminal |
| CN102024536B (en) * | 2010-06-30 | 2011-10-26 | 苏州贝得科技有限公司 | Process for manufacturing insulated sleeve of refrigeration high-voltage motor power terminal |
| CN102179974B (en) * | 2011-01-17 | 2014-12-31 | 中电普瑞科技有限公司 | Fixed high-strength glass fiber epoxy wrapping belt used for thyristor valve string |
| CN102179974A (en) * | 2011-01-17 | 2011-09-14 | 中电普瑞科技有限公司 | Fixed high-strength glass fiber epoxy wrapping belt used for thyristor valve string |
| CN103117141A (en) * | 2011-11-16 | 2013-05-22 | 昆山市特种变压器制造有限公司 | Novel insulating cylinder processing method |
| CN103117141B (en) * | 2011-11-16 | 2016-05-11 | 昆山市特种变压器制造有限公司 | A kind of processing method of Novel insulating cylinder |
| CN104867635A (en) * | 2015-05-18 | 2015-08-26 | 南京电气高压套管有限公司 | Processing method for epoxy resin vacuum impregnation glass fiber hollow composite insulator |
| CN104867635B (en) * | 2015-05-18 | 2017-04-12 | 南京电气高压套管有限公司 | Processing method for epoxy resin vacuum impregnation glass fiber hollow composite insulator |
| CN104999607A (en) * | 2015-06-18 | 2015-10-28 | 西安高强绝缘电气有限责任公司 | Manufacturing method of multi-core combined core rod for composite insulator |
| CN105219046A (en) * | 2015-09-06 | 2016-01-06 | 江苏恒神股份有限公司 | Intermediate temperature setting is wound around resin and preparation method thereof, gained is wound around one-way slabs |
| CN111267368A (en) * | 2018-12-05 | 2020-06-12 | 湖南易净环保科技有限公司 | Production process for winding, extruding and drawing pipe by large-diameter epoxy glass fiber and braid |
| CN110341172A (en) * | 2019-08-12 | 2019-10-18 | 宁波市江北宏菱新兴绝缘材料有限公司 | It is a kind of to insulate into pressure pipe production process and device |
| CN110341172B (en) * | 2019-08-12 | 2021-09-28 | 宁波市江北宏菱新兴绝缘材料有限公司 | Production process and device of insulating pressure forming pipe |
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| CN101615455B (en) | 2012-01-25 |
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