CN101847506A - Encapsulating method of large power reactor - Google Patents
Encapsulating method of large power reactor Download PDFInfo
- Publication number
- CN101847506A CN101847506A CN 201010212998 CN201010212998A CN101847506A CN 101847506 A CN101847506 A CN 101847506A CN 201010212998 CN201010212998 CN 201010212998 CN 201010212998 A CN201010212998 A CN 201010212998A CN 101847506 A CN101847506 A CN 101847506A
- Authority
- CN
- China
- Prior art keywords
- polyurethane
- epoxy resin
- large power
- power reactor
- encapsulating material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000004814 polyurethane Substances 0.000 claims abstract description 32
- 229920002635 polyurethane Polymers 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000012856 packing Methods 0.000 claims description 8
- 238000005538 encapsulation Methods 0.000 claims description 6
- 238000007711 solidification Methods 0.000 claims description 5
- 230000008023 solidification Effects 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 abstract description 14
- 229920000647 polyepoxide Polymers 0.000 abstract description 14
- 238000009413 insulation Methods 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 2
- 239000004020 conductor Substances 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000007789 sealing Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 125000003700 epoxy group Chemical group 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229920002521 macromolecule Polymers 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 239000008393 encapsulating agent Substances 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 239000002649 leather substitute Substances 0.000 description 2
- 229920001228 polyisocyanate Polymers 0.000 description 2
- 239000005056 polyisocyanate Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- GTACSIONMHMRPD-UHFFFAOYSA-N 2-[4-[2-(benzenesulfonamido)ethylsulfanyl]-2,6-difluorophenoxy]acetamide Chemical compound C1=C(F)C(OCC(=O)N)=C(F)C=C1SCCNS(=O)(=O)C1=CC=CC=C1 GTACSIONMHMRPD-UHFFFAOYSA-N 0.000 description 1
- 101710130081 Aspergillopepsin-1 Proteins 0.000 description 1
- KXDHJXZQYSOELW-UHFFFAOYSA-N Carbamic acid Chemical group NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 description 1
- 239000004970 Chain extender Substances 0.000 description 1
- 102100031007 Cytosolic non-specific dipeptidase Human genes 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000002508 compound effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005662 electromechanics Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
Abstract
The invention relates to an encapsulating method of a large power reactor, which is characterized in that polyurethane encapsulating material is used for pouring a device to be encapsulated. The encapsulating method is mainly suitable for heating and filling air gaps in a multi-conductor wire and cable core or gaps between cable elements with any structure. The polyurethane encapsulating material not only has favorable insulation performance, mechanics property and chemical property of the epoxy resin, but also overcomes the weakness that the epoxy resin is fragile, has poor impact resistance and non-uniform strength at the high temperature and the epoxy resin is fractured at the low temperature; and at the same time, the polyurethane encapsulating material is toxic-free and resists the fire, and is free from containing the composition which is harmful to the human body and the environment.
Description
Technical field
The present invention relates to a kind of method for packing of large power reactor.
Background technology
At present, all adopt poured with epoxy resin for the insulation system materials such as insulation parts in powerful reactor, electric power mutual-inductor, transformer, the high-voltage large current switch.Epoxy resin (Epoxy Resin) is the organic high molecular compound that contains two or more epoxide groups in the general reference molecule.The molecular structure of epoxy resin is containing active epoxide group in the strand for its feature, and epoxide group can be positioned at the end, centre of strand or structure circlewise.Owing to contain active epoxide group in the molecular structure, make them can form insoluble, the not molten cancellated high polymer of three-dimensional that has with polytype curing agent generation cross-linking reaction.China began epoxy resin is studied from 1958, and had dropped into industrial production with very fast speed.
But intensity inequality and low temperature shortcoming such as cracking down under epoxy resin has more crisp, shock-resistant poor, the high temperature, above-mentioned shortcoming can't solve in short-term.Simultaneously, epoxy resin also contains a large amount of volatilizable organic compounds (VOC), and is poisonous, inflammable, can work the mischief to environment and human body.
Polyurethane (Polyurethane) full name is a polyurethanes, be the general designation that contains the macromolecular compound of repetition carbamate groups (NHCOO) on the main chain, be widely used in many fields such as automobile making, refrigerator manufacturing, communications and transportation, civil construction, footwear, synthetic leather, fabric, electromechanics, petrochemical industry, mining machinery, aviation, medical treatment, agricultural.
Polyurethane is the macromolecular compound that is formed by binary or multicomponent isocyanate and binary or multi-hydroxy compound effects.Contain in the molecular structure-macromolecular compound of NHCOO-unit, form by isocyanate group and hydroxyl reaction, reaction equation is as follows:
-N＝C＝O+HO
-→-NH-COO
-。
Nineteen thirty-seven, Germany Otto professor Bayer found that at first polyisocyanates and polynary alcoholization platform thing carry out sudden reaction and can make polyurethane, and entered industrial applications based on this.States such as Great Britain and America begin industrialization from the manufacturing technology that Germany obtains polyurethane resin in nineteen fifty 1945～nineteen forty-seven in succession.Japan introduces the polyurethane industrial production technology from German Bayer company and the U.S. DuPont company nineteen fifty-five.Late 1950s, China's polyurethane industrial began starting, and nearly 10 years development are very fast.
Polyurethane is the polymer of being made by raw materials such as chain extenders such as polyisocyanates and PPG or PEPA or micromolecule polyalcohol, polyamine or water or crosslinking agents.By changing raw material type and composition, can change product form and performance thereof significantly, obtain from softness to hard final products.That the polyurethane product form has is soft, semi-rigid and rigid foam, elastomer, paint, adhesive, fluid sealant, synthetic leather coating resin, elastomer etc.
Based on above-mentioned characteristic, polyurethane has temperature, humidity requirement height to the cast environment, technological operation shortcoming rambunctious as encapsulating material, therefore, the encapsulation that polyurethane successfully is used for large power reactor is one of those skilled in the art's problem of endeavouring to solve always.
Summary of the invention
Purpose of the present invention, a kind of method for packing of large power reactor is provided at the problems referred to above exactly, this method for packing successfully is used for polyurethane the encapsulation of large power reactor, utilize impact resistance, resistance to water, thermal endurance and the stable electrical property of polyurethane sealing package material excellence, overcome under more crisp, shock-resistant poor, the high temperature of conventional encapsulant epoxy resin intensity inequality and the low temperature shortcoming of cracking down.
Technical scheme provided by the present invention is: a kind of method for packing of large power reactor, may further comprise the steps,
A. preliminary treatment: at 20～30 ℃ of following preheating polyurethane A material and B material, after the weight proportion by 1: 4～5 mixed, the deaeration of carrying out 150～210 seconds was handled.
B. cast encapsulation: the cast polyurethane that above-mentioned preliminary treatment is good is on coil and mould, solidified under the normal temperature 6-10 hour, full solidification time and product hardness can be because ambient temperature difference have differently, and normal temperature cure was about about 120 hours, and hardness Shao D of polyurethane is 55～70 after the full solidification.
The inventive method adopts the polyurethane sealing package material, have that mechanical property is good, resistance to water and resistance to chemical corrosion excellence, environmental-protection flame-retardant grade UL 94-V0 level, its internal stress is low,-40 ℃～180 ℃ not easy to crack, have excellent tack with metal, plastics etc., can be used as the engineering of water treatment waterproof insulation, large-scale dry-type transformer, insulation-encapsulated such as reactor and bus.The impact resistance that it is excellent, resistance to water, thermal endurance, stable electrical property has remedied the conventional encapsulant poor water resistance, electrical property instability, shortcoming easy to crack.
Simultaneously, the good fluidity of polyurethane sealing package material can solidify down by low temperature (18 ℃), has the quick-setting characteristics of normal temperature, and using does not in the winter time need to heat, and gets final product curing molding in 2～3 hours, when having saved worker, has improved production efficiency greatly.In addition, polyurethane is also nontoxic, have anti-flammability, do not contain the composition that human body and environment are damaged.
Embodiment
Below in conjunction with embodiment the present invention is further described:
The polyurethane general characteristic that present embodiment adopts is as follows:
Curing characteristics is as follows:
| Project | Unit | Characteristic value |
| Hardness (shore D) | ??-- | ??55-70 |
| Water absorption rate | ??％ | ??≤0.15 |
| Pyroconductivity | ??W/k.℃ | ??0.58 |
| Hot strength | ??Mpa | ??17.8 |
| Specific insulation | ??Ω·cm | ??≥1×10 13 |
| Dielectric constant | ??-- | ??5.1(1KHz) |
| Dielectric loss angle tangent | ??％ | ??4.20(1KHz) |
| Dielectric strength | ??kv/mm | ??25 |
| Anti-flammability | ??-- | ??V-0 |
| Temperature limit | ??℃ | ??-40-140 |
Method for packing step of the present invention is as follows:
A. preliminary treatment: at 20～30 ℃ of following preheating polyurethane A material and B material, after 1: 4 weight proportion mixing, the deaeration of carrying out 150～210 seconds is handled.
B. cast encapsulation: the cast polyurethane that above-mentioned preliminary treatment is good is on coil and mould, the on-the-spot temperature of cast is 20～26 ℃, humidity≤65%, solidified under the normal temperature 6-10 hour after finishing, the polyurethane full solidification time can be because ambient temperature difference has different with product hardness, normal temperature cure was about about 120 hours, and hardness Shao D of polyurethane is 55～70 after the full solidification.
Adopt the performance of polyurethane sealing package material and epoxy resin to be compared as follows:
| Main project | The polyurethane sealing package material | Epoxy resin |
| Volume resistance (25 ℃, Ω cm) | ??3.0×10 14 | ??2.5×10 13 |
| Resistance after boiling (100 ℃, 2h) | ??5.0×10 11 | ??2.0×10 7 |
| Water absorption rate (25 ℃, 24h) | ??0.08％ | ??0.52％ |
| Impact strength (KJ/m 2) | ??12.0 | ??3.0 |
| Refer to touch curing (25 ℃) | ??1h | ??10h |
| Main project | The polyurethane sealing package material | Epoxy resin |
| Refer to touch curing (10 ℃) | ??2h | ??＞48h |
| Refer to touch curing (0 ℃) | ??3h | Difficult curing |
| High/low-temperature impact (40 ℃-120 ℃) | ＞5 circulations are not ftractureed | 1 cracking |
| Dielectric strength (KV/mm) | ??25 | ??18 |
| Hardness (Shore D) | ??65D | ??80D |
Above embodiment is only for the usefulness that the present invention is described, but not limitation of the present invention, person skilled in the relevant technique, under the situation that does not break away from the spirit and scope of the present invention, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present invention, should be limited by each claim.
Claims (2)
1. the method for packing of a large power reactor may further comprise the steps:
A. preliminary treatment: at 20～30 ℃ of following preheating polyurethane A material and B material, and by after 1: 4～5 the weight proportion mixing, the deaeration of carrying out 150～210 seconds is handled;
B. cast encapsulation: the cast polyurethane that preliminary treatment in the steps A is good solidified under the normal temperature 6～10 hours on packed equipment, and normal temperature solidified 110～130 hours down, and i.e. encapsulation is finished after the full solidification.
2. the method for packing of large power reactor according to claim 1 is characterized in that described packed equipment comprises coil and mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010212998 CN101847506A (en) | 2010-06-30 | 2010-06-30 | Encapsulating method of large power reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010212998 CN101847506A (en) | 2010-06-30 | 2010-06-30 | Encapsulating method of large power reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101847506A true CN101847506A (en) | 2010-09-29 |
Family
ID=42772084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010212998 Pending CN101847506A (en) | 2010-06-30 | 2010-06-30 | Encapsulating method of large power reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101847506A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545668A (en) * | 2011-12-23 | 2012-07-04 | 无锡应达工业有限公司 | Modularized serial inverter in power supply of medium-frequency induction furnace |
| CN103700479A (en) * | 2013-12-31 | 2014-04-02 | 无锡应达工业有限公司 | Manufacturing process of high-power short-circuit protection reactor |
| CN106298217A (en) * | 2015-05-29 | 2017-01-04 | 株洲南车机电科技有限公司 | A kind of rotary transformer encapsulating device, method and application thereof |
| CN106626184A (en) * | 2016-11-24 | 2017-05-10 | 西安交通大学 | Basin-type insulator pouring device and pouring method thereof |
| CN113223814A (en) * | 2021-05-07 | 2021-08-06 | 浙江江山变压器股份有限公司 | Dry-type transformer molded by casting polyurethane resin and processing method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6624734B2 (en) * | 2001-09-21 | 2003-09-23 | Abb Technology Ag | DC voltage/current heating/gelling/curing of resin encapsulated distribution transformer coils |
| CN1567488A (en) * | 2003-06-25 | 2005-01-19 | 曾德禄 | Thin type inductor and manufacturing method thereof |
| CN101096583A (en) * | 2006-06-26 | 2008-01-02 | 山东东大一诺威聚氨酯有限公司 | Polyurethane embedding material combination adapted for electronic component encapsulation and preparation method thereof |
-
2010
- 2010-06-30 CN CN 201010212998 patent/CN101847506A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6624734B2 (en) * | 2001-09-21 | 2003-09-23 | Abb Technology Ag | DC voltage/current heating/gelling/curing of resin encapsulated distribution transformer coils |
| CN1567488A (en) * | 2003-06-25 | 2005-01-19 | 曾德禄 | Thin type inductor and manufacturing method thereof |
| CN101096583A (en) * | 2006-06-26 | 2008-01-02 | 山东东大一诺威聚氨酯有限公司 | Polyurethane embedding material combination adapted for electronic component encapsulation and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 《中国聚氨酯工业协会第十二次年会论文集》 20041231 武应涛 聚氨酯绝缘灌封材料及应用 192-194 1-2 * |
| 《弹性体》 20010825 李汾 常温固化聚氨酯介电灌封胶 33-35 1-2 第11卷, 第4期 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545668A (en) * | 2011-12-23 | 2012-07-04 | 无锡应达工业有限公司 | Modularized serial inverter in power supply of medium-frequency induction furnace |
| CN102545668B (en) * | 2011-12-23 | 2014-04-09 | 无锡应达工业有限公司 | Modularized serial inverter in power supply of medium-frequency induction furnace |
| CN103700479A (en) * | 2013-12-31 | 2014-04-02 | 无锡应达工业有限公司 | Manufacturing process of high-power short-circuit protection reactor |
| CN103700479B (en) * | 2013-12-31 | 2016-04-13 | 无锡应达工业有限公司 | A kind of manufacturing process of high-power short-circuit protection reactor |
| CN106298217A (en) * | 2015-05-29 | 2017-01-04 | 株洲南车机电科技有限公司 | A kind of rotary transformer encapsulating device, method and application thereof |
| CN106626184A (en) * | 2016-11-24 | 2017-05-10 | 西安交通大学 | Basin-type insulator pouring device and pouring method thereof |
| CN106626184B (en) * | 2016-11-24 | 2019-01-15 | 西安交通大学 | A kind of disc insulator casting device and its pouring procedure |
| CN113223814A (en) * | 2021-05-07 | 2021-08-06 | 浙江江山变压器股份有限公司 | Dry-type transformer molded by casting polyurethane resin and processing method thereof |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Open date: 20100929 |